Patent Application
20220181770
The present disclosure relates to a wiring module.
Patent Document 1 discloses a vehicle protection member. The vehicle protection member is disposed on a wall part of a vehicle, and includes a plurality of layered members stacked to sandwich one or a plurality of electrical wires routed on the wall part therebetween. At least one layered member in the plurality of layered members is made up of an electromagnetic noise shielding material. The electromagnetic noise shielding material is made up of a conductive film, a metal foil of copper or aluminum, a combined material made up of a metal foil laminated with a resin film, or a braid made up of conductive fine wires braided into a sheet-like shape, for example.
Patent Document 2 discloses a roof module including a chassis, an antenna, a metal panel, and a module substrate. The chassis houses the antenna, the metal panel, and the module substrate. The metal panel is provided in the chassis along the antenna in an inner side of the vehicle. The metal panel functions as a shielding plate (shield member) suppressing mutual noise in a communication environment on an outer side of the vehicle and a communication environment on the inner side of the vehicle.
Patent Document 1: Japanese Patent Application Laid-Open No. 2016-120759
Patent Document 1: Japanese Patent Application Laid-Open No. 2017-200086
However, used as an electromagnetic noise shielding material in Patent Document 1 is a conductive film, a metal foil of copper or aluminum, a combined material made up of a metal foil laminated with a resin film, or a braid of conductive fine wires braided into a sheet-like shape, for example. In Patent Document 2, the metal panel functions as a shielding plate. Thus, all radio wave used for communication is shielded at the electromagnetic noise shielding material or the metal panel. Further improvement in the communication environment in the vehicle is desired.
Thus, an object of the present disclosure is to improve a communication environment in a vehicle.
A wiring module according to the present disclosure is a wiring module including: a functional sheet disposed between a roof panel forming a roof part of a vehicle and an interior member forming a ceiling shape of a vehicle interior to planarly extend over the roof panel and the interior member; and a transmission member provided on the functional sheet, wherein the functional sheet includes a frequency selective layer having a frequency selective function of shielding radio wave of a first frequency band and passing radio wave of a second frequency band different from the first frequency band, the transmission member is electrically connected to a vehicle-side apparatus mounted to a side of the vehicle, and the transmission member is formed to extend to a position where the transmission member can perform a power supply to or communication with a roof-side apparatus mounted to the roof part in the functional sheet.
According to the present disclosure, a communication environment in the vehicle can be improved.
Embodiments of the present disclosure are listed and described firstly.
A wiring module according to the present disclosure is as follows.
(1) A wiring module includes: a functional sheet disposed between a roof panel forming a roof part of a vehicle and an interior member forming a ceiling shape of a vehicle interior to planarly extend over the roof panel and the interior member; and a transmission member provided on the functional sheet, wherein the functional sheet includes a frequency selective layer having a frequency selective function of shielding radio wave of a first frequency band and passing radio wave of a second frequency band different from the first frequency band, the transmission member is electrically connected to a vehicle-side apparatus mounted to a side of the vehicle, and the transmission member is formed to extend to a position where the transmission member can perform a power supply to or communication with a roof-side apparatus mounted to the roof part in the functional sheet. According to the present wiring module, the frequency selective layer as a frequency selective member has a property of shielding the radio wave of the first frequency band and passing the radio wave of the second frequency band different from the first frequency band. The functional sheet including the frequency selective layer is disposed between the roof panel forming the roof part of the vehicle and the interior member forming the ceiling shape of the vehicle interior to planarly extend over the roof panel and the interior member. Thus, the functional sheet can shield the radio wave of the first frequency band in a part of the roof part. The radio wave of the second frequency band can pass through the frequency selective layer of the frequency selective member. Thus, a communication environment in the vehicle can be improved.
(2) In the wiring module according to (1), the functional sheet may further include an additional function layer having at least one of a heat insulation function and an acoustic insulation function. The roof part is provided with at least one of the heat insulation function and the acoustic insulation function by the additional function layer.
(3) In the wiring module according to (2), it is applicable that the functional sheet includes a heat insulating layer, an acoustic insulation layer, and the frequency selective layer formed in this order from a lower side to an upper side, and the transmission member is provided on a lower side of the heat insulating layer. The transmission member and the frequency selective layer are separated from each other by the heat insulating layer and the acoustic insulation layer. Thus, suppressed is that the transmission member has an influence on the selective radio wave shielding function in the frequency selective layer.
(4) In the wiring module according to a configuration of any one of (1) to (3), it is applicable that an interior communication antenna performing communication with an interior apparatus via the radio wave of the first frequency band is provided on the functional sheet, and the interior communication antenna is provided on an inner side of the vehicle in relation to the frequency selective layer. The radio wave for the communication between the interior communication antenna and the interior apparatus is shielded by the frequency selective member, thus, is hardly leaked to an outer side of the vehicle.
(5) In the wiring module according to a configuration of any one of (1) to (4), it is applicable that an external communication antenna performing communication with an external apparatus via the radio wave of the first frequency band is provided on the functional sheet, and the external communication antenna is provided on an outer side of the vehicle in relation to the frequency selective layer. The communication is performed between the external communication antenna and the external apparatus via the external communication antenna performing the communication using the radio wave of the first frequency band without shielding the radio wave by the frequency selective member in a state where the radio wave of the first frequency band is hardly transmitted to the inner side of the vehicle.
[Details of embodiment of present disclosure] Specific examples of a vehicle, a functional sheet module, and an interior member of the present disclosure are described hereinafter with reference to the drawings. The present disclosure is not limited to these examples, but is indicated by claims, and it is intended that meanings equivalent to claims and all modifications within a scope of claims are included.
A vehicle according to an embodiment 1 is described hereinafter.
The vehicle 10 includes a body 12 and a frequency selective member 20.
The body 12 is a part forming an outline of the vehicle 10. The body 12 may be a monocoque body or a body mounted on a ladder type frame. Herein, the body 12 includes a boarding door panel for a passenger to get in or out of a vehicle and a rear door panel to take in and out a luggage, for example. The body 12 may be formed by metal or resin. The body 12 may also be made of a combination of metal and resin. A plate-like part of the body 12 covering an upper side of the vehicle interior constitutes the roof panel 13. That is to say, the roof panel 13 forms a roof part of the vehicle 10. The roof panel 13 may be partially or wholly curved to form an appearance shape of the body 12. The roof panel 13 may be formed by metal or resin. The roof panel 13 may also be made of a combination of metal and resin.
The frequency selective member 20 is a member having a frequency selective property of shielding the radio wave of the first frequency band and passing the radio wave of the second frequency band different from the first frequency band. The frequency selective member 20 has a shape extending planarly. Herein, the first frequency band may be one frequency band or a plurality of frequency bands. The frequency selective member 20 has the frequency selective property described above in a planarly-extended region. It is sufficient that at least one of reflection and absorption of radio wave of the first frequency band is performed in the frequency selective member 20. With regard to the property of the frequency selective member 20 shielding the radio wave of the first frequency band, the radio wave of the first frequency band needs not be completely shielded. With regard to the property of the frequency selective member 20 passing the radio wave of the second frequency band, the radio wave of the second frequency band needs not completely pass the radio wave shielding layer 36. That is to say, it is sufficient that the frequency selective member 20 has a frequency selective property in which a transmission attenuation property is different between the first frequency band and the second frequency band.
Known frequency selective surfaces (FSS) may be used as the frequency selective member 20. The frequency selective surface has a configuration that a unit cell (element) is formed by a metal foil on a base film formed of resin, for example. Such a frequency selective surface has characteristics of selectively shielding radio wave of one or a plurality of frequency bands in accordance with a frequency property of the unit cell (cell), and passing radio wave of the other frequency band. The frequency selective member 20 may also be formed by directly printing the unit cell (element) by a conductive paste on one main surface of any member, for example.
The frequency selective member 20 is provided in a region overlapping with at least a part of the body 12.
Various configurations are assumed as a configuration for providing the frequency selective member 20 in the region overlapping with at least the part of the body 12. For example, assumed is a configuration that the frequency selective member 20 is a sheet-like member provided between the body 12 and the interior member provided on a vehicle interior side of the body 12. This configuration is described more specifically in an embodiment 2. For example, assumed is a configuration that the frequency selective member 20 is integrated with the interior member provided on the vehicle interior side of the body 12. This configuration is described more specifically in an embodiment 3. For example, assumed is a configuration that the frequency selective member 20 is integrated with the body 12. This configuration is described more specifically in an embodiment 4.
An interior-side antenna 30 radiating the radio wave of the first frequency band described above may be provided on the vehicle interior side of the frequency selective member 20 (refer to
In this case, the radio wave radiated from the interior-side antenna 30 is shielded by the frequency selective member 20, and is hardly transmitted to the outer side of the vehicle. In the meanwhile, the radio wave radiated from the interior-side antenna is transmitted to the vehicle interior side on an opposite side of the interior-side antenna 30 from the frequency selective member 20. Thus, the wireless communication with an interior wireless communication apparatus 32 can be favorably performed through the interior-side antenna 30. When the interior-side antenna 30 performs a non-contact power supply to an interior apparatus, the radio wave (electrical power) is not leaked to the outer side of the vehicle, thus the non-contact power supply is efficiently performed.
The external communication antenna 40 radiating the radio wave of the first frequency band may be provided on a vehicle exterior side of the frequency selective member 20 (refer to
In this case, the radio wave radiated from the external communication antenna 40 is shielded by the frequency selective member 20, and is hardly transmitted to the inner side of the vehicle. In the meanwhile, the radio wave is transmitted to the vehicle exterior side on an opposite side of the external communication antenna 40 from the frequency selective member 20. Thus, the wireless communication with an external wireless base station 42 can be favorably performed through the external communication antenna 40. The radio wave is not transmitted to the inner side of the vehicle, thus radiation efficiency of the radio wave to the outer side of the vehicle increases. Also from this point, the wireless communication with the external wireless base station 42, for example, via the external communication antenna 40 is favorably performed.
The external communication antenna 40 described above may be attached to the body 12. For example, the external communication antenna 40 is preferably attached to the roof panel 13 in a state of protruding from an upper surface of the roof panel 13. Accordingly, the external communication antenna 40 can be easily exposed outside. Favorable external communication can be achieved through the external communication antenna 40. The external communication antenna 40 may be formed into a fin-like shape or a rod-like shape. The external communication antenna 40 may be formed into a thin box-like shape embedded in the roof panel 13.
The second frequency band described above of the frequency selective member may be set to overlap with at least part of the frequency band for external communication. For example, the frequency band for external communication is a frequency band used for communication between an interior apparatus (a smartphone, a mobile phone, or a personal computer device, for example) which may be used by a passenger in the vehicle and an external apparatus. For example, it is a frequency band used for a public communication line or a private communication line which may be used by the interior apparatus 50.
In this case, the radio wave radiated from the interior apparatus 50 is not shielded by the frequency selective member 20, but can be transmitted to the outer side of the vehicle. The radio wave of the same frequency band from outside is not also shielded by the frequency selective member 20, but is transmitted to the inner side of the vehicle. Thus, the interior apparatus 50 can favorably perform wireless communication with the wireless base station 52 on the outer side of the vehicle using a public communication line or a private communication line.
According to the present vehicle 10, the frequency selective member 20 has a frequency selective property of shielding the radio wave of the first frequency band and passing the radio wave of the second frequency band different from the first frequency band. The frequency selective member 20 is provided in a region overlapping with at least a part of the body 12. Thus, the frequency selective member 20 can shield the radio wave of the first frequency band in at least the part of the body 12. The radio wave of the second frequency band can pass through the frequency selective member 20. Thus, a communication environment in the vehicle 10 can be improved.
Particularly, the frequency selective member 20 is provided in a region overlapping with the roof panel 13. The roof panel 13 extends relatively widely on an upper side portion of the vehicle 10. The frequency selective member 20 overlaps with the roof panel 13, thus the frequency selective member 20 can efficiently shield the radio wave of the first frequency band.
The interior-side antenna 30 radiating the radio wave of the first frequency band is provided on the vehicle interior side of the frequency selective member 20. In this case, the radio wave radiated from the interior-side antenna 30 is shielded by the frequency selective member 20, and is hardly leaked to the outer side of the vehicle. Accordingly, information security can be improved. Suppressed is that the radio wave radiated from the interior-side antenna 30 becomes noise in the outer side of the vehicle.
The external communication antenna 40 radiating the radio wave of the first frequency band is provided on the outer side of the vehicle on the frequency selective member 20. In this case, at least some radio wave radiated from the external communication antenna 40 is shielded by the frequency selective member 20, and hardly passes to the inner side of the vehicle, thus reduction in noise can be achieved in the vehicle.
The external communication antenna 40 is attached to the body 12, thus can be easily exposed outside as much as possible. Accordingly, favorable communication can be performed.
The second frequency band of the frequency selective member 20 is set to overlap with at least part of the frequency band for external communication. Thus, an apparatus 150 in the vehicle can favorably communicate with an external apparatus using radio wave in a band region overlapping with the second frequency band in a frequency band for external communication.
A functional sheet module as a wiring module according to an embodiment 2 is described. Described in the embodiment 2 is an example of a configuration that the frequency selective member 20 is a sheet-like member provided between the body 12 and the interior member provided on a vehicle interior side of the body 12 in the embodiment 1. The vehicle 10 into which the functional sheet module is incorporated is configured to include the body 12 similar to that described in the embodiment 1. The description of the vehicle 10 itself is omitted.
<Whole Configuration of Functional Sheet Module>
In the present embodiment, the functional sheet module 120 is provided between the body 12 of the vehicle 10 and the interior member 116. The functional sheet module 120 includes the sheet part 130 including a frequency selective layer 136. The frequency selective layer 136 has a frequency selective property of shielding the radio wave of the first frequency band and passing the radio wave of the second frequency band different from the first frequency band as with the frequency selective member 20 described above. The sheet part 130 is an example of a functional sheet.
Herein, the functional sheet module 120 includes a wire-like transmission member 140 and an apparatus 150. Both or one of the wire-like transmission member 140 and the apparatus 150 may be omitted in the functional sheet module 120. The functional sheet module 120 is an example of a wiring module including the sheet part 130 which is an example of the functional sheet and the wire-like transmission member 140 which is an example of a transmission member.
The sheet part 130 is incorporated into the roof 14 to planarly extend over the roof 14. For example, the sheet part 130 may be disposed to cover 80% or more of an area of the roof 14. For example, the sheet part 130 may be disposed to extend over a whole upper side of head rests of a plurality of passenger seats in the vehicle. The frequency selective function of the sheet part 130 can be performed on a region in the roof 14 as large as possible.
Herein, the wire-like transmission member 140 and the apparatus 150 are fixed to the sheet part 130. The sheet part 130 planarly extends over the roof 14 as described above, thus the wire-like transmission member 140 and the apparatus 150 can be fixed to the region in the roof 14 as large as possible.
The wire-like transmission member 140 is a wire-like member transmitting electrical power or light, for example, and is an example of a transmission member. For example, the wire-like transmission member may be a general wire having a core wire and a covering around the core wire, or may also be a bare conductive wire, a shielded wire, an electrical cable, an enamel wire, a nichrome wire, a coaxial wire, or an optical fiber. The wire-like transmission member transmitting the electrical power may be various kinds of signal lines or various kinds of power lines. The wire-like transmission member may be a single wire-like object or a composite object of a plurality of wire-like objects (a twisted wire and a cable made up of a plurality of wire-like objects covered by a sheath). The transmission member may be formed by applying a conductive coating on the sheet part and etching on a copper foil, for example.
The wire-like transmission member 140 is fixed to the sheet part 130. It is sufficient that the wire-like transmission member 140 is disposed along a constant route on the sheet part 130, thus a specific configuration for fixation is not particularly limited.
A state where the transmission member is formed on the sheet part (functional sheet) indicates that a medium transmitting the electrical power is formed to constitute an electrical route on the sheet part. Thus, the transmission member formed on the sheet part 130 includes a transmission member directly formed by applying a conductive coating to the sheet part 130 and etching on a copper foil and a transmission member in which the wire-like transmission member manufactured separately from the sheet part 130 is attached to form a constant route along one of or both main surfaces of the sheet part 130.
For example, the wire-like transmission member 140 may be fixed to one main surface of the sheet part 130. For example, the wire-like transmission member 140 may be welded (or fused) to one main surface of the sheet part 130. A welding part thereby formed has a configuration that a part of at least one of the wire-like transmission member 140 and the sheet part 130 is melted and adheres to the other side member. The wire-like transmission member 140 and the sheet part 130 may be welded by ultrasonic welding or thermal welding. It is also applicable that a surface of at least one of the wire-like transmission member 140 and the sheet part 130 is melted by a solvent to weld the wire-like transmission member 140 and the sheet part 130. For example, the wire-like transmission member 140 may be fixed to the sheet part 130 by an adhesive agent or a double-sided tape. For example, the wire-like transmission member 140 may be sewn to the sheet part 130 by a sewing thread. It is also applicable that an adhesive tape is attached to a portion from a side of one main surface of the sheet part 130 across the wire-like transmission member 140 in a state where the wire-like transmission member 140 is disposed on one main surface of the sheet part 130 to fix the wire-like transmission member 140 to one main surface of the sheet part 130, for example. The wire-like transmission member 140 needs not be fixed to only one main surface of the sheet part 130. The wire-like transmission member 140 may include both a part fixed to one main surface of the sheet part 130 and a part fixed to the other main surface of the sheet part 130. In this case, the wire-like transmission member 140 may be provided to pass from one main surface toward the other main surface in a middle portion or an end edge portion of the sheet part 130.
For example, the wire-like transmission member 140 may be sandwiched between two sheets, thereby being fixed to the sheet part 130. For example, in a case where the sheet part 130 includes a plurality of layers, the wire-like transmission member 140 may be sandwiched between sheets constituting each layer. In a case where the other sheet overlaps with the sheet part 130, the wire-like transmission member 140 may be sandwiched between the sheet part 130 and the other sheet. In this case, the two sheets sandwiching the wire-like transmission member 140 may be fixed by welding, or may also be fixed by an adhesive agent or a double-sided tape.
With regard to a relationship with external communication antennas 153a and 153b described hereinafter, the wire-like transmission member 140 is preferably provided on a surface of the sheet part 130 on a side opposite to a surface where the external communication antennas 153a and 153b are provided. The reason is that the external communication antennas 153a and 153b and the wire-like transmission member 140 are separated from each other by a distance in accordance with a thickness of the sheet part 130, and an influence of noise therebetween is suppressed.
With regard to a relationship with an interior-side antenna 150B described hereinafter, the wire-like transmission member 140 is preferably provided on a surface of the sheet part 130 on a side opposite to a surface where the interior-side antenna 150B is provided (refer to an example illustrated in
The wire-like transmission member 140 is connected to the apparatus 150. The apparatus 150 transmits or receives an electrical signal or an optical signal via the wire-like transmission member 140. Alternatively, the apparatus 150 receives a power supply or distributes electrical power via the wire-like transmission member 140. The wire-like transmission member 140 and the apparatus 150 may be connected to each other via a connector. It is also applicable that the wire-like transmission member 140 is directly introduced in the apparatus 150 to be directly connected to an electrical element in the apparatus 150.
The apparatus 150 is an apparatus disposed on the roof 14 to be a connection destination of the wire-like transmission member 140. Assumed as the apparatus 150 are, for example, an electronic control unit, a lamp (particularly, an interior lamp), a speaker, an interior camera, a monitor, a projection apparatus, an external communication antenna, and an interior-side antenna.
The apparatus 150 is fixed to the sheet part 130. A position of fixing the apparatus 150 to the sheet part 130 is optionally set. The apparatus 150 is preferably fixed to a position appropriate for a role of the apparatus 150 on the sheet part 130. For example, assuming that the apparatus 150 is a map lamp, the apparatus 150 is fixed to a portion of the sheet part 130 which is to be disposed in an obliquely upper front position of a front seat. For example, assuming that the apparatus 150 is an interior-side antenna, the apparatus 150 is fixed to a portion of the sheet part 130 which is to be disposed in an upper position of a front seat or a rear seat.
In the description herein, the apparatus 150 located closer to one side in a center position of the sheet part 130 in a front-back direction is an electronic control unit 150A. The electronic control unit 150A is an apparatus controlling each apparatus 150 mounted to the roof 14 while communicating with the other electronic control unit provided in the vehicle 10. The apparatus mounted to the roof part in the apparatus 150 except for the electronic control unit 150A is an example of a roof-side apparatus. The wire-like transmission member 140 connecting an electronic control unit 150A and the other roof-side apparatus 150 in the wire-like transmission members 140 is an example of a first transmission member. A mounted state indicates that any of the roof panel 13, the interior member 16, and the sheet part 130 is held to be kept in a constant position in the roof part.
In the description herein, the apparatus 150 located in a position closer to a front side in relation to a center of the sheet part 130 is the interior-side antenna 150B. The interior-side antenna 150B is an antenna for performing wireless communication with an interior apparatus (a smartphone, a mobile phone, and a personal computer device), for example, in a vehicle. For example, the interior-side antenna 150B is a Wi-Fi (registered trademark) communication antenna and a Bluetooth (registered trademark) communication antenna.
The interior-side antenna 150B may be a non-contact power supply antenna performing a power supply to an interior apparatus in the vehicle in a non-contact form. A frequency for the non-contact power supply is optionally set. Applicable as the interior-side antenna 150B is a printed circuit antenna in which an antenna is formed on a circuit by a conductive foil, for example. The printed circuit may be flexible printed circuits (FPC). When the interior-side antenna SOB is made up as a printed circuit antenna, the interior-side antenna SOB is attached to the sheet part 130 with a thin occupied space. When the printed circuit antenna is made up of the FPC, the occupied space is further thinned. A sheet-like antenna such as the FPC antenna can easily deal with a shape corresponding to a space where the antenna can be disposed. The interior-side antenna 150B may also be a rod antenna, for example. The interior-side antenna 150B may be an antenna performing both wireless communication and a non-contact power supply to an interior apparatus in the vehicle.
In the description herein, the apparatus 150 located in a position closer to a rear side of the sheet part 130 is an external communication antenna unit 150C. The external communication antenna unit 150C includes the antennas 153a and 153b for performing wireless communication with an apparatus located on the outer side of the vehicle. Herein, the external communication antenna unit 150C includes a base member 152, the external communication antennas 153a and 153b, and a cover 154. The base member 152 is formed into a flat shape, that is, a rectangular plate-like shape herein. The external communication antennas 153a and 153b are provided on the base member 152. The external communication antennas 153a and 153b are antennas for performing communication with a vehicle external apparatus. The external communication antennas 153a and 153b are antennas for performing communication with a wireless base station in a public communication line or a private communication line, an antenna for vehicle-to-vehicle communication or road-vehicle communication, or an antenna for receiving a GPS signal. Herein, the plurality of external communication antennas 153a and 153b are mounted on the base member 152. Accordingly, the plurality of external communication antennas 153a and 153b are handled as one collected form. The external communication antenna unit may include only one antenna. The external communication antenna unit may include three or more antennas. The cover 154 is made up of resin, for example, and covers an upper side of the external communication antennas 153a and 153b and four sides around the external communication antennas 153a and 153b. An antenna hole 113h formed in the roof panel 13 is formed into a shape corresponding to an outer periphery of the cover 154. The cover 154 in the external communication antenna unit ISOC is fitted into the antenna hole 113h formed in the roof panel 13. Accordingly, even when the roof panel 13 is made of metal, the external communication antennas 153a and 153b are not covered by metal, but can be directed outward.
Herein, the external communication antenna unit 150C is formed into a thin box-like shape. The external communication antenna unit may be formed into a fin-like shape or a rod-like shape. In this case, the external communication antenna unit formed into the fin-like shape or the rod-like shape may be inserted into a hole formed in the roof panel to protrude to an outer side of the roof panel. The external communication antenna is preferably incorporated into a fin-like or rod-like external communication antenna unit to be located outside the roof panel.
In the description hereinafter, when the electronic control unit 150A, the interior-side antenna 150B, and the external communication antenna unit 150C need to be distinguished, reference signs 150A, 150B, and 150C are referenced, and when they need not be distinguished, they are collectively referred to as the apparatus 150 in some cases.
The plurality of wire-like transmission members 140 are disposed along a route from the electronic control unit 150A toward a front side and each of a plurality of routes from the electronic control unit 150A toward the apparatus 150. The wire-like transmission member 140 located along the route from the electronic control unit 150A toward the front side is fixed to the sheet part 130 in a region of the sheet part 130, thereby being held along a constant route. The wire-like transmission member 140 located along the route from the electronic control unit 150A toward the front side extends from a front part of the sheet part 130 to the outer side. The wire-like transmission member 140 is disposed along an A pillar in a vehicle, for example, and connected to the other electronic control unit and a power source in the vehicle. That is to say, the wire-like transmission member 140 is electrically connected to a vehicle-side apparatus mounted on a vehicle side. A state where the wire-like transmission member 140 is electrically connected to the vehicle-side apparatus mounted on the vehicle side indicates that the wire-like transmission member 140 and the vehicle-side apparatus are connected in a state where at least one of a power transmission and communication can be performed therebetween. Thus, in any of cases where the electronic control unit 150A has a communication relay function and a power source-distribution function, the wire-like transmission member 140 and the vehicle-side apparatus are electrically connected to each other even when at least one of the electronic control unit 150A and a wiring 140F intervenes therebetween.
It is also applicable that a part of the wire-like transmission member 140 connected to the other electronic control unit and a power source in the vehicle from the electronic control unit 150A does not constitute the transmission member in the functional sheet module (wiring module) 120 but is considered as the other wiring 140E laid from the vehicle-side apparatus mounted to the vehicle side to the roof part. In such a case, the other wiring 140E is an example of a second transmission member extending from a position in the sheet part 130 where the electronic control unit 150A is mounted to an outward direction of the sheet part 130 and electrically connected to the vehicle-side apparatus. The wiring 140E needs not be attached to the sheet part 130.
The plurality of wire-like transmission members 140 located along the plurality of routes from the electronic control unit 150A toward the plurality of apparatuses 150 is fixed to the sheet part 130, thereby being held along a constant route. That is to say, the wire-like transmission member 140 is formed to extend to a position in the sheet part 130 where the wire-like transmission member 140 can perform a power supply to or communication with the apparatus 150 which is the roof-side apparatus. The wire-like transmission member 140 may be held by the sheet part 130 until it reaches each apparatus 150 or in a position before it reaches the apparatus 50. Routes of the plurality of wire-like transmission members 140 are optionally set. It is preferable that the routes of the plurality of wire-like transmission members 140 do not intersect with each other. When the routes of the plurality of wire-like transmission members 140 do not intersect with each other, increase in a thickness of the wiring module by an intersection part thereof is suppressed. A noise problem such as a crosstalk of a signal occurring in the intersection part is suppressed.
The wire-like transmission member 140 extending to the external communication antenna unit 150C including the external communication antennas 153a and 153b in the wire-like transmission members 140 is electrically connected to the vehicle-side apparatus via the electronic control unit 150A and the wiring 140E. This wire-like transmission member 140 extends to the external communication antenna unit 150C along the sheet part 130 to be also electrically connected to the external communication antennas 153a and 153b. Thus, this wire-like transmission member 140 is an example of a transmission member electrically connecting the vehicle-side apparatus and the external communication antennas 153a and 153b. In the similar manner, the wire-like transmission member 140 extending to the interior-side antenna 150B in the wire-like transmission members 140 is an example of a transmission member electrically connecting the vehicle-side apparatus and the interior-side antenna 150B.
<Example of Functional Sheet>
In the present embodiment, the sheet part 130 includes a heat insulating layer 132, an acoustic insulation layer 134, and a frequency selective layer 136. Herein, the sheet part 130 includes a multilayer structure in which the heat insulating layer 132, the acoustic insulation layer 134, and the frequency selective layer 136 overlap with each other from a lower side to an upper side. An order of overlapping the heat insulating layer 132, the acoustic insulation layer 134, and the frequency selective layer 136 is optionally set. Both or one of the heat insulating layer 132 and the acoustic insulation layer 134 may be omitted. The sheet part 130 is an example of a functional sheet. In a case where the sheet part 130 includes a plurality of functional layers, it is not necessary to arrange the plurality of functional layers to be overlapped in a thickness direction of the sheet part. The plurality of functional layers may be provided in different regions in a region where the sheet part extends. For example, the plurality of functional layers may be provided side by side in a region where the sheet part extends. The frequency selective layer 136 may be provided on a lower side of the heat insulating layer 132. In this case, a thermal influence on the frequency selective layer 136 is reduced by the heat insulating layer 132. Accordingly, resin of a base material of the frequency selective layer 136 needs not have heat resistance, thus this configuration contributes to cost reduction.
The heat insulating layer 132 is a layer suppressing a heat transmission between one main surface and the other main surface of the sheet part 130. The heat insulating layer 132 may be a layer reflecting heat radiation energy. The heat insulating layer 132 may be a layer having lower heat conductivity than the other layer. Specifically, a sheet including minute spaces such as a non-woven sheet or a foam sheet, for example, may be used as the heat insulating layer 132. A heat insulating coating or a heat shielding coating may be used as the heat insulating layer 132. The heat insulating layer 132 may be a metal foil. In this case, it is sufficient that the heat insulating layer 132 made up of the metal foil is not provided in a region where radio wave is intended to be passed in the sheet part 13.
The acoustic insulation layer 134 is a layer suppressing a sound transmission between one main surface and the other main surface of the sheet part 130. The acoustic insulation layer 134 may reflect sound or absorb energy of sound as heat energy. Specifically, a sheet including minute spaces such as a non-woven sheet or a foam sheet, for example, may be used as the acoustic insulation layer 134. A sound absorbing coating may be used as the acoustic insulation layer 134.
The frequency selective layer 136 is a layer having a frequency selective property of shielding the radio wave of the first frequency band and passing the radio wave of the second frequency band different from the first frequency band as described above. As described above, a known frequency selective surface may be used as the frequency selective layer 136. The frequency selective layer 136 may also be formed by directly printing a conductive paste on a heat insulating layer or an acoustic insulation layer, for example. In this case, the heat insulating layer or the acoustic insulation layer is a layer doing double duty as the radio wave shielding layer described above.
When the frequency band of the radio wave radiated from the interior-side antenna 150B is included in the first frequency band shielded by the frequency selective layer 136, the radio wave is shielded by the frequency selective layer 136. When a frequency band of any radio wave radiated from the external communication antennas 153a and 153b is included in the first frequency band shielded by the frequency selective surface, any radio wave radiated from the external communication antennas 153a and 153b is shielded by the frequency selective layer 136. When a frequency band of any radio wave radiated from the external communication antennas 153a and 153b is included in the second frequency band out of range of the first frequency band shielded by the frequency selective surface, the radio wave for external communication passes through the frequency selective layer 136.
The layers may simply overlap with each other. The layers may be fixed to each other by a double-sided tape, an adhesive agent, or welding, for example. For example, the layer made up of a non-woven sheet can have a function as a heat insulating layer and an acoustic insulation layer.
It is not necessary that the sheet part 130 includes all of the layers of the heat insulating layer 132 and the acoustic insulation layer 134 in addition to the frequency selective layer 136. The sheet part 130 may include only the frequency selective layer 136. That is to say, it is sufficient that the sheet part 130 includes a layer having at least the radio wave shielding function. When the sheet part 130 includes an additional function layer in addition to the frequency selective layer 136, it is sufficient that the additional function layer has at least one of a heat insulation function and an acoustic insulation function. As described above, the additional function layer may include both the heat insulating layer 132 and the acoustic insulation layer 134, include one of the heat insulating layer 132 and the acoustic insulation layer 134, or include one layer having a heat insulation function and an acoustic insulation function. For example, the layer made up of a non-woven sheet can have a function as a heat insulating layer and an acoustic insulation layer.
When the frequency selective layer 136 has a selective radio wave shielding property, the wire-like transmission member 140 and the frequency selective layer 136 are preferably located away from each other. The reason is that there is a possibility that the wire-like transmission member 140 has an influence on a selective radio wave shielding property in the frequency selective layer 136. For example, as illustrated in
The wire-like transmission member 140 is welded to the base material 139 described above by ultrasonic welding, for example, thus the covering 140b is welded to the base material 139. Any of or both the base material 139 and the covering 140b may be melted.
<Fixing Structure of Apparatus Fixed to Functional Sheet>
An example of a fixing structure of the apparatus 150 fixed to the sheet part 130 is described.
The apparatus 150 may be directly fixed to the sheet part 130. The apparatus 150 may be fixed to the sheet part 130 via an apparatus holder.
As illustrated in
For example, the direct fixation apparatus 250 may be welded (or fused) to one main surface of the sheet part 130. A welding part thereby formed has a configuration that a part of at least one of the direct fixation apparatus 250 and the sheet part 130 is melted and adheres to the other side member. The direct fixation apparatus 250 and the sheet part 130 may be welded by ultrasonic welding or thermal welding. It is also applicable that a surface of at least one of the wire-like transmission member 250 and the sheet part 130 is melted by a solvent to weld the direct fixation apparatus 250 and the sheet part 130. For example, the direct fixation apparatus 250 may be fixed to the sheet part 130 by an adhesive agent or a double-sided tape, for example. For example, the direct fixation apparatus 250 may be sewn to the sheet part 130 by a sewing thread, for example. For example, a protrusion piece for sewing may be formed outside the direct fixation apparatus 250. It is sufficient that a hole is formed in the protrusion piece. The direct fixation apparatus 250 is sewn to the sheet part 130 using this hole. It is also applicable that the sheet part 130 is sandwiched between the direct fixation apparatus 250 and a fixation plate to fix the direct fixation apparatus 250 to the sheet part 130. For example, the direct fixation apparatus 250 is disposed on a side of one main surface of the sheet part 130, and a plate-like fixation plate is disposed on a side of the other main surface of the sheet part 130. In this state, a screw passing through the sheet part 130 secures the direct fixation apparatus 250 and the fixation plate in an approaching direction. Accordingly, the sheet part 130 is sandwiched between the direct fixation apparatus 250 and the fixation plate.
The direct fixation apparatus 250 may be fixed to any of one main surface and the other main surface of the sheet part 130. In
Herein, a fixing piece 251 for fixation to the roof 14 is provided to protrude from the direct fixation apparatus 250. A screw insertion hole for screw fixation is formed in the fixing piece 251. An opening 131h is formed in a position in the sheet part 130 corresponding to the fixing piece 251. Thus, the fixing piece 251 can be overlapped with a side of a lower surface of the roof panel 13 in a state where the functional sheet module 120 is disposed between the roof panel 13 and the interior member 116. Accordingly, the fixing piece 251 can be easily fixed to the roof panel 13 with a screw.
In the present embodiment, the interior-side antenna 150B and the external communication antenna unit 150C which are examples of the apparatus 150 are also directly fixed to the sheet part 130 as with the case described above,
The apparatus holder 160 is configured to be able to hold the indirect fixation apparatus 350 in a state of being fixed to the sheet part 130. Herein, the apparatus holder 160 includes a holder body part 162 and a fixing piece 164.
The holder body part 162 is formed into a rectangular parallelepiped box-like shape with an opening on one end side by resin, for example. A space capable of partially or wholly housing the indirect fixation apparatus 350 is formed inside the holder body part 162. Herein, the indirect fixation apparatus 350 is formed into a rectangular parallelepiped shape. A rectangular parallelepiped space corresponding to an outer shape of the indirect fixation apparatus 350 is formed inside the holder body part 162.
A locking piece 163 which can be locked to the indirect fixation apparatus 350 is formed in the holder body part 162. Herein, an elongated groove-like concave part 351 is formed on an outer periphery of the indirect fixation apparatus 350. The locking piece 163 is formed in a part of an opening part of the holder body part 162. Both side parts of the locking piece 163 are separated from the other part of the holder body part 162. Accordingly, the locking piece 163 can be elastically deformed in an inward-outward direction of the holder body part 162 at a base end part thereof as a support position. A convex part 162a protruding toward an inner side of the holder body part 162 is formed on a tip part of the locking piece 163. When the indirect fixation apparatus 350 is inserted into the holder body part 162, the convex part 162a has contact with an outer surface of the indirect fixation apparatus 350, and the locking piece 163 is elastically deformed outward. When the indirect fixation apparatus 350 is inserted into a back side of the holder body part 162 so that the convex part 162a reaches the concave part 351, the locking piece 163 is elastically recovered to an original shape, and the convex part 162a is fitted in the concave part 351. Accordingly, the indirect fixation apparatus 350 is held in the holder body part 162 in a state of not coining out thereof. The holder body part 162 needs not necessarily have a locking structure by the locking piece 163. For example, the indirect fixation apparatus 350 may be held in the holder body part 162 by holding strength in connecting a connector. The indirect fixation apparatus 350 may be fixed to the holder body part 162 with a screw, for example.
A holder-side connector 166 is provided in the holder body part 162. The holder-side connector 166 is provided on the back side of the holder body part 162. The holder-side connector 166 is exposed to an outer side and an inner side of the holder body part 162. The wire-like transmission member 140 is introduced in the holder-side connector 166 from an outward part of the holder-side connector 166. In the holder-side connector 166, the wire-like transmission member 140 is connected to a terminal located in the holder-side connector 166. The terminal in the holder-side connector 166 is exposed in the holder body part 162.
An apparatus-side connector 352 which can be connected to the holder-side connector 166 is provided in a part of the indirect fixation apparatus 350 inserted into the back side of the holder body part 162. As described above, when the indirect fixation apparatus 350 is inserted into the holder body part 162, the apparatus-side connector 352 and the holder-side connector 166 are connected to each other. Thus, the apparatus holder 160 holds the apparatus 150 while electrically connecting the apparatus 150 to the wire-like transmission member 140.
The holder body part 162 is directly fixed to one main surface of the sheet part 130 in the manner similar to the direct fixation apparatus 250 described above.
The fixing piece 164 is provided to protrude from the holder body part 162. The fixing piece 164 has a configuration similar to the fixing piece 251 provided in the direct fixation apparatus 250. An opening 131h is formed in a position in the sheet part 130 corresponding to the fixing piece 164. Thus, the fixing piece 164 can be overlapped with a side of a lower surface of the roof panel 13 in a state where the functional sheet module 120 is disposed between the roof panel 13 and the interior member 116. Accordingly, the fixing piece 164 can be easily fixed to the roof panel 13 with a screw. The indirect fixation apparatus itself may also be fixed to the roof panel 13, for example, in a configuration using the holder.
As a configuration of attaching the apparatus 150 to the sheet part 130, a configuration of attaching the direct fixation apparatus 250 to the sheet part 130 and a configuration of attaching the indirect fixation apparatus 350 to the sheet part 130 via the apparatus holder 160 may be combined. For example, the interior-side antenna 150B is formed into the sheet-like shape, thus may be directly fixed to the sheet part 130 without an intervention of the apparatus holder 160.
It is preferable that the apparatus 150 and the apparatus holder 160 are finally fixed to the roof panel 13 or the interior member 116, for example. It is sufficient that the apparatus 150 and the apparatus holder 160 are fixed to the sheet part 130 at an intensity large enough to be able to keep a constant position on the sheet part 130 in a state before being fixed to the roof panel 13, for example.
In this manner, at least one of the electronic control unit 150A and the roof-side apparatus 150 is electrically connected to the wire-like transmission member 140 easily using the apparatus holder 160.
The apparatus 150 needs not necessarily be fixed to the sheet part 130. For example, a wiring module including the sheet part 130 and the wire-like transmission member 140 may be incorporated into a roof part separately from the apparatus 150.
<Arrangement Relationship of Apparatus on Functional Sheet>
An arrangement example of the apparatus 150 on both surfaces of the sheet part 130 is described.
In
When the apparatus 150 is a monitor, for example, the apparatus 150 is required to be exposed to the vehicle interior. In this case, the apparatus 150 is fitted in a hole 116h formed in the interior member 116 to be able to be exposed to the vehicle interior. When the apparatus 150 is the electronic control unit 150A, for example, the apparatus 150 needs not be exposed to the vehicle interior, but may be housed between the interior member 116 and the roof panel 13.
The functional sheet 130 is disposed between the interior member 116 and the roof panel 13. The sheet part 130 may be fixed to the interior member 116, for example, or may also be simply located on the interior member 116. For example, the sheet part 130 may be fixed to the interior member 116 by a double-sided tape, an adhesive agent, or welding.
The external communication antenna unit 150C including the external communication antennas 153a and 153b is preferably provided on a vehicle exterior side of the frequency selective layer 136.
In this case, the first frequency band may be set in a band region including all of frequency bands of the radio wave radiated from the external communication antennas 153a and 153b. Accordingly, the radio wave radiated from the external communication antennas 153a and 153b is wholly shielded by the frequency selective layer 136, and is hardly transmitted to the inner side of the vehicle. The radio wave radiated from the external communication antennas 153a and 153b is not shielded by the frequency selective layer 136, but is transmitted to the outer side. Thus, the wireless communication with an external apparatus 210 (a base station, for example) via the external communication antennas 153a and 153b is favorably performed. The radio wave is not transmitted to the inner side of the vehicle, thus radiation efficiency of the radio wave to the outer side of the vehicle increases. Also from this point, the wireless communication with the external apparatus 210 (a base station, for example) via the external communication antennas 153a and 153b is favorably performed.
The first frequency band may be set to a band region including some frequency of the radio wave radiated from the external communication antennas 153a and 153b. In this case, the second frequency band includes a remaining frequency in the radio wave radiated from the external communication antennas 153a and 153b.
Accordingly, the radio wave mainly used for vehicle external communication in the radio wave radiated from the external communication antennas 153a and 153b is shielded by the frequency selective layer 136, and can be hardly transmitted to the inner side of the vehicle. For example, it is sufficient that the first frequency band is set in a band region including the frequency band of the radio wave for vehicle-to-vehicle communication or road-vehicle communication. Accordingly, the radio wave for vehicle-to-vehicle communication or road-vehicle communication is shielded by the frequency selective surface.
The radio wave also used for communication between the inner side and the outer side of the vehicle in the radio wave radiated from the external communication antennas 153a and 153b is not shielded by the frequency selective layer 136, but is easily transmitted to the inner side of the vehicle. For example, it is sufficient that not the first frequency band but the second frequency band is set in a band region including a frequency band of the radio wave used for a public communication line or a private communication line between an interior apparatus (a smartphone, a mobile phone, or a personal computer device, for example) which may be used by a passenger in the vehicle and an external apparatus. The frequency band of the radio wave used for a public communication line or a private communication line is an example of the frequency band for external communication.
When the roof panel 13 is formed of metal, for example, it is sufficient that the antenna hole 113h is formed in the roof panel 13, and the external communication antennas 153a and 153b are disposed in positions corresponding to the antenna hole 113h. Herein, the external communication antenna unit 150C is fitted in the antenna hole 113h. Accordingly, the external communication antennas 153a and 153b are disposed in the antenna hole 113h when viewing the antenna hole 113h from the outer side. Thus, the external communication antennas 153a and 153b can be directed to the outer side of the vehicle via the antenna hole 113h, and can favorably perform wireless communication with a communication apparatus 210 (such as a base station) on the outer side of the vehicle.
When the roof panel 13 is formed of resin, for example, the external communication antennas 53a and 53b needs not form the antenna hole 13h in the roof panel 13. The external communication antenna 153a may be disposed on the inner side of the roof panel 13 formed of resin, for example.
Even in a case where the roof panel 13 is formed of metal, for example, when a sun roof is formed in the roof panel 13, the external communication antenna may perform wireless communication with an external apparatus via an opening for the sun roof.
In the present embodiment, the wire-like transmission member 140 is fixed to the vehicle interior side of the sheet part 130, and the external communication antenna unit 150C is fixed to the vehicle exterior side of the sheet part 130. In this case, the following configuration is applicable. Firstly, a through hole 130b passing through front and back sides of the sheet part 130 is formed. An end portion of the wire-like transmission member 140 fixed to the vehicle interior side of the sheet part 130 is passed through the through hole 130b, and is led to the surface of the sheet part 130 on the vehicle exterior side. Then, a connector on the end portion of the wire-like transmission member 140 is connected to the external communication antenna unit 150C at an outer side of the surface of the sheet part 130 on the vehicle exterior side. Accordingly, the wire-like transmission member 140 can be connected to the apparatus 150 at both surfaces of the sheet part 130.
The interior-side antenna 150B is preferably provided on the vehicle interior side of the frequency selective layer 136. In this case, it is sufficient that the first frequency band is set in a band region including the frequency of transmission radiated from the interior-side antenna 150B. Accordingly, the radio wave radiated from the interior-side antenna 150B and an interior apparatus 221 in the vehicle is shielded by the frequency selective layer 136, and is hardly transmitted to the vehicle exterior side. When the interior-side antenna 150B performs a non-contact power supply to an interior apparatus, the radio wave (electrical power) is not leaked to the outer side of the vehicle, thus the non-contact power supply to the interior apparatus is efficiently performed.
For example, there is a possibility that the interior apparatus 221 such as a smartphone performs wireless communication with an external apparatus via a public communication line or a private communication line. When the second frequency band is set in a band region including the frequency band of the radio wave used in the public communication line or the private communication line, the interior apparatus 221 can favorably perform wireless communication with a communication apparatus (a base station, for example) 222 on the outer side of the vehicle.
As described above, assumed is that the external communication antennas 153a and 153b are provided on the vehicle exterior side of the sheet part 130, and the interior-side antenna 150B is provided on the vehicle interior side thereof. In this case, for example, the first frequency band of the radio wave shielded by the frequency selective surface 136 may be set to shield some radio wave radiated from the external communication antennas 153a and 153b and the radio wave radiated from the interior-side antenna 150B. Furthermore, the frequency band of the radio wave shielded by the frequency selective surface 136 may be set to allow the transmission of the remaining radio wave radiated from the external communication antennas 153a and 153b. Accordingly, the leakage of the radio wave for vehicle interior communication to the outer side of the vehicle is suppressed as much as possible. Some radio wave for vehicle external communication (such as vehicle-to-vehicle communication or road-vehicle communication) can be hardly transmitted to the vehicle interior side, and the remaining radio wave on the outer side of the vehicle (such as a public communication line) can be easily transmitted to the vehicle interior side.
The interior-side antenna 150B is relatively thin and light in weight, thus it is sufficient that the interior-side antenna 150B is fixed only to the sheet part 130, and needs not be fixed to the interior member 116.
Based on a premise that the functional sheet module 120 includes the heat insulating layer 132, the apparatus 150 preferably includes a vehicle interior-side apparatus provided on the inner side of the vehicle in relation to the heat insulating layer 132. Assumed herein is that the apparatus 150 except for the external communication antenna unit 150C in the plurality of apparatuses 150 is the vehicle interior side apparatus.
There is a possibility that a temperature of the roof 14 increases when the roof 14 is irradiated with light from the sun 90. Heat by sunlight is blocked by the heat insulating layer 132, thus a temperature of an area on the vehicle interior side of the heat insulating layer 132 hardly increases compared with an area on the vehicle exterior side. Thus, when the apparatus 150 is provided in the area on the vehicle interior side of the heat insulating layer 132, increase in a temperature around the apparatus 150 can be suppressed. As a result, a member having high heat resistance needs not be used as the apparatus 150.
In the similar manner, when the wire-like transmission member 140 is provided in the area on the vehicle interior side of the heat insulating layer 132, increase in a temperature of the wire-like transmission member 140 can be suppressed. Thus, a member having high heat resistance needs not be used as the wire-like transmission member 140.
<Effect Etc. Of Embodiments>
Also according to the present embodiment 2, the function effect similar to that in the embodiment 1 described above can be obtained.
According to the present functional sheet module 120, the frequency selective layer 136 can be easily incorporated between the body 12 and the interior member 116.
The interior-side antenna 150B is attached to the functional sheet module 120, thus the interior-side antenna 150B can be easily incorporated into the body 12 together with the frequency selective layer 136.
The external communication antenna unit 150C is attached to the functional sheet module 120, thus the external communication antenna unit 150C can be easily incorporated into the body 12 together with the frequency selective layer 136.
The wire-like transmission member 140 is fixed to the functional sheet module 120, thus the wire-like transmission member 140 can be easily incorporated into the body 12 together with the frequency selective layer 136. The wire-like transmission member 140 is provided on the vehicle interior side of the frequency selective layer 136, thus the radio wave from the outer side of the vehicle shielded by the frequency selective layer 136 hardly becomes noise on the wire-like transmission member 140. The radio wave from the outer side of the vehicle shielded by the frequency selective layer 136 hardly becomes noise on the apparatus 150 provided on the vehicle interior side of the frequency selective layer 136. Thus, measures against exogenous noise can be performed.
The sheet part 130 includes at least one of the acoustic insulation layer 134 and the heat insulating layer 132, thus when the frequency selective layer 136 is incorporated into the body 12, at least one of the acoustic insulation layer 134 and the heat insulating layer 132 can be easily incorporated into the body 12.
In the present embodiment, the wire-like transmission member may be connected to an apparatus which is not fixed to a functional sheet. For example, an antenna unit including an external communication antenna may be fixed to a roof panel. In this case, a connector connected to the antenna unit may be provided on a wire-like transmission member fixed to a functional sheet. A connector of the wire-like transmission member may be connected to the antenna unit when the wiring module is incorporated into the roof.
The electronic control unit 150A is provided on the sheet part 130, thus the electronic control unit 150A controlling the roof-side apparatus 150 is easily incorporated into the roof part together with the sheet part 130.
Even when the apparatus 150 is not fixed to the sheet part 130, the wire-like transmission member 140 formed to extend to a position where the wire-like transmission member 140 can perform a power supply to or communication with the apparatus 150 can be easily connected to the apparatus 150 in the state where the sheet part 130 and the wire-like transmission member 140 are incorporated into the roof part. Thus, also in this case, the effect similar to that described above is obtained.
The external communication antenna unit 150C may be omitted. In this case, it is sufficient that a connector 148 is provided on an end portion of the wire-like transmission member 140 connected to the external communication antenna unit. The external communication antenna unit is assumed to be an external communication antenna unit 49 attached to a roof panel, for example (an external communication antenna unit formed into a fin-like shape or a rod-like shape, for example). It is sufficient that the connector 148 is connected to the external communication antenna unit 149 when the present functional sheet module 120B is incorporated into the roof in the vehicle 10. Accordingly, also in a case where the external communication antenna is separated from the sheet part 130 and incorporated into the roof panel 13, the wire-like transmission member 140 is easily connected to the external communication antenna via the connector 148.
A functional sheet module (wiring module) 620 according to another modification example is described.
The functional sheet module 620 includes a plurality of apparatuses 650 provided on the sheet part 130 which is a functional sheet and the first transmission member 640.
The plurality of apparatuses 650 include an electronic control unit 650A, an interior-side antenna 650B, an external communication antenna 650C, a lamp 650D, a camera 650E, and a speaker 650F. The apparatus in the plurality of apparatuses 650 except for the electronic control unit 650A is an example of a roof-side apparatus mounted to a roof part. The external communication antenna 650C may be a single antenna, or may also be an antenna unit in which a plurality of antennas are combined.
The electronic control unit 650A is a computer including a processor and a memory, for example, and executes control processing in accordance with a program which is previously stored. The electronic control unit 650A is assumed to be an area electronic control unit (ECU) controlling various apparatuses provided on the roof, for example. The electronic control unit 650A is connected to the vehicle-side apparatus via the second transmission member 660. The vehicle-side apparatus is assumed to be the other electronic control unit (for example, a body ECU or a central ECU). The vehicle-side apparatus may be a power source device. The second transmission member 660 includes at least a communication line. The electronic control unit 650A is communicably connected to the vehicle-side apparatus via the second transmission member 660.
The electronic control unit 650A is communicably connected to the other apparatus provided on the roof such as the interior-side antenna 650B, the external communication antenna 650C, the lamp 650D, the camera 650E, and the speaker 650F, for example, via the first transmission member 640. The first transmission member 640 includes at least a communication line. The electronic control unit 650A can control the other apparatuses 650B, 650C. 650D, 650E, and 650F provided on the roof via the first transmission member 640. In
The first transmission member 640 may include a power source line. The second transmission member 660 may include a power source line. The power source line included in the first transmission member 640 may be directly connected to a power source line included in the second transmission member. The power source line included in the first transmission member 640 may be connected to a power source line included in the second transmission member via a power source branch box, for example. The power source branch box is a device into which a branch circuit made up of a bus bar and a circuit shielding component made up of a fuse or a semiconductor element, for example, are incorporated. The power source branch box may be incorporated into the electronic control unit 650A. In this case, the second transmission member 660 including a signal line and a power source line is collectively connected to the electronic control unit 650A, and divided in the electronic control unit 650A in accordance with the apparatuses 650B, 650C, 650D, 650E, and 650F, for example. The electronic control unit 650A is connected to the apparatuses 650B, 650C, 650D, 650E, and 650F to be able to communicate with and supply electrical power to them via the first transmission member 640 including the signal line and the power source line. The second transmission member 660 needs not be attached to the sheet part 130.
Positions of each apparatus 650 and the first transmission member 640 in the sheet part 130 are optionally set. In the example illustrated in
The apparatus 650 includes an apparatus provided in a region closer to the left side of the sheet part 130 and an apparatus provided in a region closer to the right side of the sheet part 130.
For example, the plurality of (four in
The camera 650E and the lamp 650D are provided around the speaker 650F on a forefront side, the lamp 650D is provided around the speaker 650F in a middle portion in a front-back direction, and the camera 650E and the lamp 650D are provided around the speaker 650F on a rearmost side in each of the right and left regions in the sheet part 130.
The plurality of interior-side antennas 650B are provided separately on the right and left sides of the sheet part 130. Herein, the plurality of interior-side antennas 650B are provided in a region closer to a back side in relation to the electronic control unit 650A and closer to a front side in relation to the external communication antenna 650C. The plurality of (four in
Each apparatus 650 may be provided on the side of the interior member 16 or the side of the roof panel 13 in the sheet part 130. For example, the electronic control unit 650A and the external communication antenna 650C may be provided on the side of the roof panel 13 in the sheet part 130. The interior-side antenna 650B, the lamp 650D, the camera 650E, and the speaker 650F may be provided on the side of the interior member 16 on the sheet part 130.
The first transmission member 640 passes through a route from the electronic control unit 650A in two separate directions on the right and left sides, and is connected to each apparatus 650. For example, focusing on the region closer to the left side in the sheet part 130, some of the first transmission members 640 extend in the left direction from the electronic control unit 650A. Some of the first transmission members 640 are bended on a near side of a left edge of the sheet part 130 and extend to the front side or the back side along the left edge, and are connected to each apparatus 650 provided on the left side of the sheet part 130. For example, focusing on the region closer to the right side in the sheet part 130, the other some of the first transmission members 640 extend in the right direction from the electronic control unit 650A. The other some of the first transmission members 640 are bended on a near side of a right edge of the sheet part 130 and extend to the front side or the back side along the right edge, and are connected to each apparatus 650 provided on the right side of the sheet part 130.
When the plurality of apparatuses 650 are collectively provided on the sheet part 130, the first transmission member 640 may be provided on the sheet part 130 along the same route, and divided in an area where the plurality of apparatuses 650 are concentrated to be connected to the plurality of apparatuses 650. For example, in the example illustrated in
The apparatus 650 provided in the center of the sheet part 130 in the width direction may be connected to any of the first transmission members 640 on the right and left sides. The first transmission member 640 may include a transmission member which is not located along the right and left edges of the sheet part 130.
The second transmission member 660 extends from the electronic control unit 650A to the front side. Herein, the second transmission member 660 extending from the electronic control unit 650A is divided into the right and left sides, and extends to the front side along the right and left edges of the sheet part 130. The second transmission member 660 is led to a vehicle body side along the A pillar, for example. The second transmission member 660 may be directly drawn from the electronic control unit 650A, or connected to the electronic control unit 650A via a connector. It is also applicable that the second transmission member 660 is not attached to the sheet part 130, but is separated from the sheet part 130 and led toward the A pillar, for example.
As described above, the first transmission member 640 itself may include a signal line and a power source line. When the first transmission member 640 and the apparatus 650 are located in different sides of the functional sheet 130, the second transmission member 660 may pass through the sheet part 130, thereby being connected to the apparatus 650.
The interior-side antenna 650B has a configuration that an antenna element 650Ba made of metal is sandwiched between two insulating films 650Bb, for example. A wire-like conductor 650Bc connected to the antenna element 650Ba may also be sandwiched between the two insulating films 6501Bb together with the antenna element 650Ba. The two insulating films 650Bb may be melted and welded to each other, or may also be bonded by an adhesive agent (including a gluing agent). Each of the antenna element 650Ba and the wire-like conductor 650Bc are sandwiched between the two insulating films 650Bb, thus protection performance and waterproof performance are improved. The interior-side antenna 650B is attached to the sheet part 130 by a double-sided tape or an adhesive agent, for example.
The functional sheet module 620 is assembled to the roof panel 13 as follows, for example. That is to say, an operator, for example, raises the functional sheet module 620 from a lower side of the roof panel 13 and attaches it to the roof panel 13. This operation can be performed in a state where the operator looks up from the lower side.
Also according to the present embodiment, the effect similar to that in the above embodiment 2 can be obtained.
An interior member 430 according to an embodiment 3 is described. Described in the embodiment 3 is an example of a configuration that the frequency selective member 20 is integrated with the interior member provided on a vehicle interior side of the body 12 in the embodiment 1. The vehicle 10 into which the functional sheet module is incorporated is configured to include the body 12 similar to that described in the embodiment 1. The description of the vehicle 10 itself is omitted. The same reference numerals are assigned to the similar constituent elements described in the embodiment 2 such as the apparatus 150 and the wire-like transmission member 140, and the description thereof will be omitted.
The interior member 430 is a member provided on the vehicle interior side of the body 12 in relation to the roof panel 13. The interior member 430 includes an interior body part 416 and a frequency selective member 420.
The interior body part 416 is a plate-like member facing the vehicle interior side in the manner similar to the interior member 116 in the embodiment 2. The interior body part may be a member provided on the vehicle interior side in relation to a boarding door and a rear door.
The frequency selective member 420 is similar to the frequency selective member 20 as described in the embodiment 1 and the embodiment 2.
The frequency selective member 420 is integrated with the interior body part 416. That is to say, the frequency selective member 420 has a configuration appropriate for being integrated with the interior body part 416 and attached to the roof panel 13 as the interior member 430. Specifically, for example, the frequency selective member 420 is fixed to the interior body part 416. The fixation may be performed by a fixing structure similar to that described in the embodiment 1 and the embodiment 2. The wiring module of the embodiment 2 including the frequency selective layer of the frequency selective member may be integrated with the interior body part 416.
The frequency selective member 420 may also be formed by directly printing the unit cell (element) by a conductive paste, for example, on the main surface of the interior body part 416.
In the present embodiment, the apparatus ISO described above is connected to the end portion of the wire-like transmission member 140. The apparatus 150 may be fixed on one main surface (the upper surface) of the frequency selective member 420. It is also applicable that the apparatus 150 is not fixed to the frequency selective member 420 but is fixed to the side of the roof panel 13. The apparatus 150 may be provided by the configuration similar to that described in the embodiment 1 and the embodiment 2. Also according to the present embodiment, the function effect similar to that in the embodiment 1 and the embodiment 2 can be obtained.
The wire-like transmission member 140 may be fixed to the interior body part 416 in the present embodiment. In this case, the interior member 430 is attached to the roof panel 13, thus the wire-like transmission member 140 is easily attached to the body 12.
The wire-like transmission member 140 needs not be fixed to the interior body part 416. The wire-like transmission member 140 may be incorporated into the roof 14 separately from the interior member 430.
A body 512 in the vehicle 10 according to an embodiment 4 is described. Described in the embodiment 4 is an example of a configuration that the frequency selective member 20 is integrated with the body 12 in the embodiment 1. The body 512 is similar to the body 12 described in the embodiment 1. The same reference numerals are assigned to the similar constituent elements described in the embodiment 1, and the description thereof will be omitted.
The frequency selective member 520 is similar to the frequency selective member 20 as described in the embodiment 1 and the embodiment 2.
The frequency selective member 520 is integrated with the roof panel 513. Specifically, for example, the frequency selective member 520 is fixed to the roof panel 513. The fixation of the frequency selective member 520 and the roof panel 513 may be performed by a fixing structure similar to that described in the embodiments 1 to 3.
The frequency selective member 520 may also be formed by directly printing the unit cell (element) by a conductive paste, for example, on the main surface of the roof panel 513.
The apparatus may be provided in the frequency selective member 520 as described in the embodiments 1 to 3. According to the present embodiment, a communication environment is improved even if the other member is not incorporated. The function effect similar to that described in the embodiments 1 to 3 can be obtained.
Each configuration described in the above embodiments and modification examples thereof can be appropriately combined as long as they are not contradictory. For example, any of the embodiment 2, the embodiment 3, and the embodiment 4 is optionally combined to be applied in different positions in ON same vehicle. The embodiment 2, the embodiment 3, and the embodiment 4 may be optionally combined and applied together in the same position in the vehicle for a purpose of shielding different frequency bands.
[Additional Statement]
The present specification also discloses the following contents.
A first aspect is a vehicle including a body and a frequency selective member, wherein the frequency selective member has a property of shielding radio wave of a first frequency band and passing radio wave of a second frequency band different from the first frequency band, and the frequency selective member is provided in a region overlapping with at least part of the body. According to the present disclosure, the frequency selective member has characteristics of shielding radio wave of a first frequency band and passing radio wave of a second frequency band different from the first frequency band. The frequency selective member is provided in a region overlapping with at least a part of the body for the vehicle. Thus, the frequency selective member can shield the radio wave of the first frequency band in at least the part of the body. The radio wave of the second frequency band can pass through the frequency selective member. Thus, a communication environment in the vehicle can be improved.
A second aspect is the vehicle according to the first aspect, wherein the frequency selective member is provided in a region in the body overlapping with a roof panel. Accordingly, the radio wave of the first frequency band can be shielded by the frequency selective member in the roof panel relatively extending widely.
A third aspect is the vehicle according to the first or second aspect, wherein the frequency selective member is a sheet-like member provided between the body and an interior member provided on a vehicle interior side of the body. Accordingly, the frequency selective member is provided using a space between the roof panel and the interior member.
A fourth aspect is the vehicle according to the first or second aspect, wherein the frequency selective member is integrated with an interior member provided on a vehicle interior side of the body. According to the fourth aspect, the frequency selective member can be integrated with the interior member.
A fifth aspect is the vehicle according to the first or second aspect, wherein the frequency selective member is integrated with the body. Accordingly, the frequency selective member can be integrated with the roof panel.
A sixth aspect is the vehicle according to any one of the first to fifth aspects, wherein an interior-side antenna radiating the radio wave of the first frequency band is provided on a vehicle interior side of the frequency selective member. The radio wave radiated from the interior-side antenna is shielded by the frequency selective member, thus is hardly leaked to an outer side of the vehicle.
A seventh aspect is the vehicle according to any one of the first to sixth aspects, wherein an external communication antenna radiating the radio wave of the first frequency band is provided on a vehicle exterior side of the frequency selective member. Vehicle external communication via the external communication antenna is performed without being shielded by the frequency selective member.
An eighth aspect is the vehicle according to the seventh aspect, wherein the external communication antenna is attached to the body. The external communication antenna can be easily exposed outside as much as possible.
A ninth aspect is the vehicle according to any one of the first to eighth aspects, wherein the second frequency band is provided to overlap with at least part of a frequency band for external communication. An apparatus in the vehicle can communicate with an external apparatus using radio wave of a band region overlapping with the second frequency band in a frequency band for external communication.
A tenth aspect is a functional sheet module provided between a body of a vehicle and an interior member provided on a vehicle interior side of the body, the functional sheet module includes a sheet part including a frequency selective layer, and a frequency selective layer has a property of shielding radio wave of a first frequency band and passing radio wave of a second frequency band different from the first frequency band. According to the present disclosure, the functional sheet module includes the frequency selective layer having a property of shielding the radio wave of the first frequency band and passing the radio wave of the second frequency band different from the first frequency band. The functional sheet module is provided between the body and the interior member of the vehicle. Thus, the functional sheet module can shield the radio wave of the first frequency band in at least part of the body. The radio wave of the second frequency band can pass through the frequency selective member. Thus, a communication environment in the vehicle can be improved.
An eleventh aspect is the functional sheet module according to the tenth aspect, wherein the sheet part further includes at least one of a heat insulating layer and an acoustic insulation layer. At least one of heat insulation and acoustic insulation can be performed by the functional sheet module.
A twelfth aspect is the functional sheet module according to the tenth or eleventh aspect, and further includes a wire-like transmission member fixed to the sheet part. When the functional sheet module is incorporated into the vehicle, the wire-like transmission member can be disposed in the vehicle.
A thirteenth aspect is the functional sheet module according to any one of the tenth to twelfth aspects, and further includes an interior-side antenna radiating the radio wave of the first frequency band, wherein the interior-side antenna is fixed to the sheet part to be located on a vehicle interior side of the frequency selective layer. The radio wave radiated from the interior-side antenna is shielded by the frequency selective surface, thus is hardly leaked to an outer side of the vehicle. The functional sheet is incorporated into the vehicle, thus the interior-side antenna can be easily incorporated into the vehicle.
A fourteenth aspect is the functional sheet module according to any one of the tenth to thirteenth aspects, and further includes an external communication antenna radiating the radio wave of the first frequency band, wherein the external communication antenna is fixed to the sheet part to be located on a vehicle exterior side of the frequency selective layer. The radio wave radiated from the external communication antenna hardly passes to the inner side of the vehicle, thus reduction in noise can be achieved in the vehicle. The functional sheet is incorporated into the vehicle, thus the external communication antenna can be easily incorporated into the vehicle.
In the present each functional sheet module, the functional sheet may be provided to extend between the roof panel and the interior member in the body. Accordingly, the radio wave of the first frequency band can be shielded by the frequency selective member in the roof panel relatively extending widely.
The external communication antenna may be attached to the body. Accordingly, the radio wave radiated from the external communication antenna attached to the body hardly passes to the inner side of the vehicle, thus reduction in noise can be achieved in the vehicle.
The second frequency band may be set to overlap with at least part of the frequency band for external communication. Accordingly, an apparatus in the vehicle can communicate with an external apparatus using radio wave in a band region overlapping with the second frequency band in a frequency band for external communication.
An interior member according to a fifteenth aspect is an interior member provided on a vehicle interior side of a body of a vehicle, including an interior body part facing the vehicle interior and a frequency selective member integrated with the interior body part, wherein the frequency selective member has a property of shielding radio wave of a first frequency band and passing radio wave of a second frequency band different from the first frequency band. According to the present disclosure, the frequency selective member includes the frequency selective layer having a property of shielding the radio wave of the first frequency band and passing the radio wave of the second frequency band different from the first frequency band. The interior member including the frequency selective member is provided on the vehicle interior side of the body of the vehicle. Thus, the interior member can shield the radio wave of the first frequency band in at least the part of the body. The radio wave of the second frequency band can pass through the frequency selective member. Thus, a communication environment in the vehicle can be improved.
A sixteenth aspect is an interior member according to the fifteenth aspect, and further includes a wire-like transmission member fixed to a vehicle exterior side of the interior body part. When the interior member is incorporated into the vehicle, the wire-like transmission member can be disposed in the vehicle.
In the present each interior member, the frequency selective member may be provided in a region in the body overlapping with a roof panel. The radio wave of the first frequency band can be shielded by the frequency selective member in the roof panel relatively extending widely.
The interior-side antenna radiating the radio wave of the first frequency band may be provided on the vehicle interior side of the frequency selective member. The radio wave radiated from the interior-side antenna is shielded by the frequency selective member, thus is hardly leaked to an outer side of the vehicle.
The external communication antenna radiating the radio wave of the first frequency band may be provided on the vehicle exterior side of the frequency selective member. The radio wave radiated from the external communication antenna hardly passes to the inner side of the vehicle, thus reduction in noise can be achieved in the vehicle.
The external communication antenna may be attached to the body. The radio wave radiated from the external communication antenna attached to the body hardly passes to the inner side of the vehicle, thus reduction in noise can be achieved in the vehicle.
The second frequency band may be set to overlap with at least part of the frequency band for external communication. An apparatus in the vehicle can communicate with an external apparatus using radio wave of a band region overlapping with the second frequency band in a frequency band for external communication.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2019-066550 | Mar 2019 | JP | national |
| 2019-066841 | Mar 2019 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2020/013995 | 3/27/2020 | WO | 00 |
