This application claims the benefit of priority of Japanese Patent Application Number 2016-087471 filed on Apr. 25, 2016, the entire content of which is hereby incorporated by reference.
The present disclosure relates to a luminaire and an illumination system which are controllable according to illumination function by wireless communication.
Conventionally, a luminaire is known which includes a light source that emits light, a cover that covers the light source, a pattern antenna that is an example of a first antenna and performs wireless communication, a wireless communication controller that is an example of a controller, and a lead wire that is an example of a control wire (see Patent Literature (PTL) 1: Japanese Unexamined Patent Application. Publication No. 2014-167878, for example).
There is, however, a demand for improving communication performance of the luminaire disclosed PTL 1.
The present disclosure has an object to provide a luminaire and an illumination system which make it possible to increase a gain by using a control wire as an antenna so as to improve communication performance.
A luminaire according to one aspect of the present disclosure includes: a light-emitting module; a base having a front surface on which the light-emitting module is disposed; a cover which is translucent and covers the light module; a controller which is disposed on a back surface of the base and controls the light-emitting module; a first antenna which transmits and receives a first polarized wave; and a control wire which connects the controller and the first antenna, wherein the control wire includes an exposed portion which is a portion of the control wire in a longitudinal direction of the control wire and which is disposed between the base and the cover to transmit and receive a second polarized wave that differs from the first polarized wave in a polarization direction.
Moreover, an illumination system according to one aspect of the present disclosure includes: a plurality of luminaires; and a terminal device capable of controlling the plurality of luminaires.
The luminaire and the illumination system according to the aspects of the present disclosure make it possible to increase a gain by using a control wire as an antenna so as to improve communication performance.
The figures depict one or more implementations in accordance with the present teaching, by way of examples only, not by way of limitations. In the figures, like reference numerals refer to the same or similar elements.
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In a luminaire, an antenna such as a first antenna is usually disposed in a position at which the antenna is not easily seen or a position at which the antenna cannot be seen, according to the nature of the luminaire and in terms of design or light distribution characteristics. It is desirable that to ensure communication performance, the first antenna be disposed at an end of a space between a cover and a base (light bar) which fixes a circuit board on which a light source is mounted.
Moreover, from a standpoint of workability of replacing the base, a controller is usually housed on an opposite side of the light source in the luminaire and disposed near the center of the base.
In the luminaire having such a structure, it is necessary to dispose, from the first antenna disposed at the end of the base to the controller, a control wire which connects the first antenna and, the controller that controls the first antenna. The control wire includes a power wire, a signal wire, and a ground wire, and simultaneously radiates radio waves when the first antenna radiates radio waves.
Typically, in the luminaire, because the control wire connecting the first antenna and the controller is housed in a casing, the control wire is not exposed from the base. In other words, when the control wire is used as an antenna, it is impossible to ensure sufficient communication performance because the base becomes an obstacle and communication is performed via a space of the base, the casing, etc. In particular, if the base is made of metal, it is difficult to use the control wire as the antenna.
In view of this, the present disclosure provides a luminaire and an illumination system which make it possible to increase a gain by using a control wire as an antenna so as to improve communication performance.
Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It is to be noted that the embodiments described below each shows a specific example of the present disclosure. The numerical values, shapes, materials, structural elements, the arrangement and connection of the structural elements, etc. indicated in the following embodiments are mere examples, and therefore are not intended to limit the present disclosure. Therefore, among the structural elements in the following embodiments, structural elements not recited in any of the independent claims defining the most generic concept of the present disclosure are described as optional structural elements.
It is to be noted that the figures are schematic diagrams and are not necessarily precise illustrations. In addition, substantially the same elements share the same reference signs in the figures, and overlapping description is omitted or abridged.
Hereinafter, a configuration of a luminaire according to an embodiment will be described with reference to
In
As illustrated in
Luminaire 1 includes body 2 and cover 3. Body 2 is a component serving as a base for luminaire 1. Body 2 includes casing 21 and lighting device 5.
Casing 21 has an elongated shape and a substantially symmetrical trapezoidal shape when a plane defined by the vertical and front-back directions is viewed cross-sectionally. Casing 21 includes housing portion 21a which is recessed upward from the under surface of casing 21. Housing portion 21a is a recess extending in the horizontal direction. Housing portion 21a houses controller 43, base 41, light-emitting module 60, control wire 47, etc. which will be described below in connection with lighting device 5. Controller 43, base 41, light-emitting module 60, and cover 3 are disposed downward in listed order from the bottom surface of housing portion 21a. Light-emitting module 60 and base 41 constitute a light bar.
Lighting device 5 includes device body 40 and light-emitting module 60.
Device body 40 includes base 41, controller 43, wireless module 45, and control wire 47.
Base 41 is a frame which is elongated in the horizontal direction and which is made of ceramic, resin into which filer metal is mixed, or metal such as aluminum and iron, etc. in the embodiment, base 41 is made of metal such as iron to dissipate heat of light-emitting module 60. In this case, for example, base 41 is formed into a predetermined shape by rolling or pressing, etc. SPCC (Steel Plate Cold Commercial) sheet metal (metal plate). It is to be noted that base 41 is not necessarily limited to a base made of only metal, and may be made of a material other than metal.
Base 41 includes, along the horizontal direction, step portions 411 which make a pair in the front-back direction. The pair of step portions 41d forms recess 42. Specifically, recess 42 is recessed in a direction from the front surface (under surface) of base 41 to the bottom surface of casing 21 (upward). The pair of step portions 414 is a protrusion protruding downward. In addition, recess 42 extends in the horizontal direction such that circuit board 61 of light-emitting module 60 can be mounted on recess 42. Light-emitting module 60 is mounted on recess 42 which is the front surface of base 41. Circuit hoard 61 is supported by base 41 by mounting circuit board 61 of light-emitting module 60 on base 41 and fixing circuit board 61 to base 41.
It is desirable that the pair of step portions 41d not be in a direction substantially perpendicular to optical axis X1 of light source 62 hen light-emitting module 60 is disposed in recess 42. If the pair of step portions 41d is in the direction substantially perpendicular to optical axis X1 of light source 62, the pair of step portions 41d casts a shadow. For this reason, it is desirable that the pair of step portions 41d be provided to block light traveling in the direction substantially perpendicular to optical axis X1.
As illustrated in
Moreover, first insertion hole 41a and second insertion hole 41b have the inner diameter slightly larger than the outer diameter of control wire 47. In other words, the inner diameter of first insertion hole 41a and second insertion hole 41b is large to the extent that control wire 47 inserted through first insertion hole 41a and second insertion hole 41b does not wobble.
As illustrated in
Moreover, a connector is provided to an end of an electrical wire extending in casing 21 of body 2, and a connector is provided to an end of an electrical wire extending in lighting device 5. Electric power necessary for lighting device 5 to emit light is supplied from body 2 to lighting device 5 by fitting the connector of body 2 and the connector of lighting device 5.
Controller 43 is disposed between the back surface (top surface) of base 41 and the bottom of housing portion 21a. Controller 43 is disposed in the vicinity of the central portion of base 41 in the horizontal direction. Controller 43 controls operations such as turning on, turning off, dimming (brightness adjustment), and toning (emission color (color temperature) adjustment) of light-emitting module 60, according to an instruction (control signal via a remote controller etc.) from a user. Controller 43 performs these operations using, for example, a microcomputer, a processor, or a dedicated circuit which controls a current value etc. supplied to light-emitting module 60 according to an inputted signal.
Wireless module 45 has a flat plate shape and is provided substantially parallel to a plane defined by the vertical direction and the horizontal direction. Specifically, because first antenna 45a of wireless module 45 extends in a direction (vertical plane) substantially perpendicular to a ground surface, first antenna 45a serves as a pattern antenna capable of transmitting and receiving a vertically polarized wave (an example of a first polarized wave). It is to be noted that the vertical plane is also vertical to the under surface of base 41 in the embodiment. In addition, first antenna 45a is also substantially vertical to base 41. First antennas 45a is an antenna capable of transmitting a carrier of a vertically polarized wave. Wireless module 45 is attached to the left end of base 41. First antenna 45a of wireless module 45 is provided between cover 3 and base 41. In other words, wireless module 45 is disposed to penetrate base 41, first antenna 45a of wireless module 45 is disposed to he exposed from base 41, and the other structural elements are disposed in housing portion 21a between casing 21 and base 41.
Wireless module 45 receives a control signal via an external terminal device such a remote controller, and transmits a request for a program for controlling light-emitting module 60. It is to be noted that wireless module 45 may be, for example, a communication module for communicating with a program distribution server via the Internet. In addition, a communication device such as a modem, a router, and a relay server may be between wireless module 45 and the program distribution server in reality.
It is to be noted that controller 43 may be connected to a storage. The storage may be a rewritable (non-volatile) memory device into which a program received by wireless module 45 is stored. A semiconductor memory such as a flash memory and an electrically erasable programmable read-only memory (EEPROM) is used as an example of the storage. It is to be noted that the storage may be provided in controller 43.
Control wire 47 includes power wire 148a, signal wire 148b, and ground wire 147 (multiple wires) each of which includes a metal wire such as a copper wire covered with an insulative covering body such as rubber, and extends in the horizontal direction to electrically connect wireless module 45 and controller 43. Control wire 47 extends along base 41. As illustrated in
First control wire 47a extends in the horizontal direction. First control wire 47a has the right end connected to the left end of controller 43 via a connector. Second control wire 47b bends substantially vertically relative to first control wire 47a from the left end of first control wire 47a, and extends downward. In other words, second control wire 47b extends in the vertical direction that is substantially vertical relative to first control wire 47a extending in the horizontal direction. Moreover, second control wire 47b penetrates first insertion hole 41a, and part of second control wire 47b is provided between base 41 and cover 3. Stated differently, second control wire 47b is disposed to penetrate base 41, and the part of second control wire 47b is exposed from base 41. Third control wire 47c extends leftward (toward wireless module 45) from the lower end of second control wire 47b. In other words, third control wire 47c extends in the horizontal direction that is substantially vertical relative to second control wire 47b extending in the vertical direction, and is substantially parallel to first control wire 47a. Fourth control wire 47d bends substantially vertically relative to third control wire 47c from the left end of third control wire 47c, and extends upward. In other words, fourth control wire 47d extends in the vertical direction that is substantially vertical relative to third control wire 47c extending in the horizontal direction, and is substantially parallel to second control wire 47b. Moreover, part of fourth control wire 47d penetrates second insertion hole 41b and is provided between base 41 and cover 3. Stated differently, fourth control wire 47d is disposed to penetrate base 41, and the part of fourth control wire 47d is exposed from base 41. Fifth control wire 47e extends leftward from the upper end of fourth control wire 47d, and has the left end connected to wireless module 45 via a connector. The part of second control wire 47b (between base 41 and cover 3), third control wire 47c, and the part of fourth control wire 47d (between base 41 and cover 3) are an example of exposed portion 48. Moreover, exposed portion 48 has the right end (one end) which is the part of second control wire 47b (between base 41 and cover 3) and is the right side of exposed portion 48. Furthermore, exposed portion 48 has the left end (the other end) which is the part of fourth control wire 47d (between base 41 and cover 3) and is the left side of exposed portion 48. In other words, exposed portion 48 has the right end connected to controller 48 via first insertion hole 41a. In addition, exposed portion 48 is connected to wireless module 45 via second insertion hole 41b.
Third control wire 47c is linear. Moreover, third control 47c (second antenna 147c to be described below) extends to be substantially perpendicular to first antenna 45a of wireless module 45. In other words, third control wire 47c extending in the horizontal direction is substantially perpendicular to the plane defined by the vertical direction and the front-back direction. Specifically, ground wire 147 of third control wire 47c is grounded on a side opposite controller 43. Moreover, ground wire 147 of third control wire 47c extends half-wavelength long in the horizontal direction that is horizontal relative to the ground surface. For this reason, ground wire 147 of third control wire 47c serves like a dipole antenna capable of transmitting and receiving a horizontally polarized wave (an example of a second polarized wave) differing from a vertically polarized wave in a polarization direction. In other words, ground wire 147 of third control wire 47c is second antenna 147c. As stated above, first antenna 45a and second antenna 14′7c constitute a diversity antenna. It is to be noted that using control wire 47 as the antenna means ground wire 147 of third control wire 47c included in control wire 47, not using all of control wire 47 as the antenna.
As illustrated in
Moreover, exposed portion 48 is housed in recess 42 to avoid blocking light from light source 62 to be described below. Specifically, exposed portion 48 is disposed between recess 42 and circuit board 51, and is not on a straight line connecting light source 62 and the front surface of base 41 excluding recess 42. The front surface of base 41 excluding recess 42 is a surface on a side where light source 62 of base 41 is disposed, and is the surface of base 41 other than recess 42.
As illustrated in
Light sources 62 are mounted in line on each of circuit boards 61. Each of light sources 62 is a surface-mount device (SMD) LED element. Specifically, the SMD LED element is a packaged LED element in which an LED chip (light-emitting element) is mounted inside a resin-molded cavity, and a phosphor-containing resin is tilled into the cavity. Controller 43 provided to lighting device 5 causes light sources 62 to turn on and turn off. In addition, controller 43 causes a power supply device to dim and tone each light source 62.
Circuit board 61 is a mounting board for mounting light sources 62, and is, for example, a ceramic board, a resin board, or a metal base board covered with an insulating film. Moreover, circuit board 61 has, for example, a plate shape with a flat surface which is rectangular in a plan view. It is to be noted that circuit board 61 includes a pair of electrode terminals (a positive electrode terminal and a negative electrode terminal) for receiving, from an external source, direct current power for causing light sources 62 to emit light.
Controller 43 includes the power supply device which supplies electric power for causing light sources 62 to emit light. The power supply device includes a power supply circuit which generates electric power. The power supply device also includes a circuit board such as a printed-circuit board, and electronic components mounted on the circuit board. The power supply device converts alternating current power from an external power source (AC in
It is to be noted that the power supply device need not be included in controller 43, and may be provided above base 41 (between base 41 and casing. 21). In other words, the power supply device may be electrically connected to controller 43 and housed in housing portion 21a of casing 21. The power supply device and circuit boards 61 are separated from one another via base 41. The power supply device is electrically connected to light sources 62 via, for example, a connector. The connector is a circuit board connector for feeding electric power to light-emitting module 60 (circuit hoards 61 and light sources 62).
Cover 3 is a member which covers light-emitting module 60 and is a translucent member which transmits light emitted by light-emitting module 60. Cover 3 is made of, for example, a translucent resin material such as acryl and polycarbonate or a translucent material such as a transparent glass material. Moreover, in the embodiment, cover 3 has a function to diffuse light emitted by light-emitting module 60. For example, a milky white light diffusion film is formed on cover 3 by applying a resin or white pigment containing a light diffusion material (fine particles) such as silica and calcium carbonate, onto the inner or outer surface of cover 3. Furthermore, cover 3 itself may be formed of a resin material in which a light diffusion material etc. is dispersed.
It is to be noted that cover 3 which diffuses light may be configured by forming a milky white light diffusion film containing a light diffusion material etc. on the inner or outer surface of a transparent cover, instead of dispersing the light diffusion material inside. Moreover, cover 3 which diffuses light may be configured to have light diffusion characteristics by diffusion processing being performed on, instead of using the light diffusion material. For example, cover 8 may be configured to have the light diffusion characteristics by surface treatment such as emboss processing being performed on to form minute irregularities on the inner or outer surface of the transparent or by a dot pattern being printed on the inner or outer surface of the transparent cover. It is to be noted that even when the diffusion processing is performed, the light diffusion material may be further included to improve the light diffusion characteristics.
It is to be noted that it not essential that cover 3 have the function to diffuse light, and that cover 3 may be transparent to the extent that the inside of cover 3 is visible from the outside of the same.
Operation of a terminal device such as a remote controller by a user causes controller 43 to turn on and off a current output to light-emitting module 60 via first antenna 45a and second antenna 147c, thereby turning on and off luminaire 1 thus configured.
Moreover, luminaire 1 corresponds to dimming and toning functions of light-emitting module 60. The dimming function is achieved by controller 43 increasing or reducing a current output to light-emitting module 60. In addition, the toning function is achieved by controller 43 changing a balance of supply current to each of light sources 62 included in light-emitting module 60. It is to be noted that the increase or reduction of the supply current to light-emitting module 60 is performed by, for example, PWM control.
The following describes a result of measuring gains of second antenna 147c (third control wire 47c) using control wire 47 in luminaire 1 thus configured.
In
The average gain of first antenna 45a increases by approximately 3 dB from the minimum value to the maximum value. In addition, the average gain of second antenna 147c increases at least 6 dB from the minimum value to the maximum value.
For this reason, it has been found that exposing second antenna 147c using third control wire 47c from base 41 causes the average gain of first antenna 45a to increase.
Moreover,
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As shown in
The measurement result has found that luminaire 1 is expected to obtain a greater gain when the distance from third control wire 47c to base 41 is greater. Accordingly, luminaire 1 can obtain the best average gain when the distance from third control wire 47c to base 41 is approximately 10 mm.
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Next, advantageous effects of luminaire 1 according to the embodiment will be described.
As stated above, luminaire 1 according to the embodiment includes: light-emitting module 60; base 41 having a front surface (under surface) on which light-emitting module 60 is disposed; cover 3 which is translucent and covers light-emitting module 60; controller 43 which is disposed on a back surface (top surface) of base 41 and controls light-emitting module 60; first antenna 45a which transmits and receives a vertically polarized wave; and control wire 47 which connects controller 43 and first antenna 45a. Control wire 47 includes exposed portion 48 which is a portion of control wire 47 in a longitudinal direction of control wire 47 and which is disposed between base 41 and cover 3 to transmit and receive a horizontally polarized wave that differs from the vertically polarized wave in a polarization direction.
With this configuration, because exposed portion 48 is exposed from base 41 between base 41 and cover 3, base 41 has difficulty in blocking radio waves radiated from control wire 47. For this reason, it is possible to ensure the radiation intensity of second antenna 147c in exposed portion 48.
Accordingly, using part of control wire 47 as second antenna 147c makes it possible to increase a gain to improve communication performance.
Moreover, an illumination system according to the embodiment includes a plurality of luminaires 1. The illumination system includes terminal device 101 capable of controlling the plurality of luminaires 1.
With this configuration, the same advantageous effect as that of aforementioned luminaire 1 is produced.
Furthermore, in luminaire 1 according to the embodiment, control wire 47 includes a plurality of wires. Exposed portion 48 includes second antenna 147c which transmits and receives the horizontally polarized wave. Second antenna 147c includes ground wire 147 of control wire 47.
With this configuration, ground wire 147 of control wire 47 is grounded on a side opposite controller 43. As a result, ground wire 147 of third control wire 47c in exposed portion 48 can be used like a dipole antenna. For this reason, ground wire 147 of third control wire 47c can be used as second antenna 147c.
It is to be noted that using ground wire 147 of control wire 47 as an antenna makes it possible to reduce an increase in the number of components.
Moreover, in luminaire 1 according to the embodiment, second antenna 147c is separated from base 41.
With this configuration, as illustrated in
Furthermore, in luminaire 1 according to the embodiment, first antenna 45a extends in a direction (a vertical plane) substantially perpendicular to a ground surface. Second antenna 147c is linear. In addition, second antenna 147c extends to be substantially perpendicular to first antenna 45a.
With this configuration, because first antenna 45a transmits and receives the vertically polarized wave, and second antenna 147c of third control wire 47c transmits and receives the horizontally polarized wave, the gain is increased by these antennas having different directivities.
It is to be noted that, for example, because it is known that the average gain is decreased when a longitudinal direction of first antenna 45a and a longitudinal direction of exposed portion 48 are arranged to be the same direction (substantially parallel), wireless module 45 and exposed portion 48 are disposed to be substantially perpendicular to one another.
Moreover, in luminaire 1 according to the embodiment, wireless module 45 is disposed to penetrate base 41 from the front surface to the back surface. Base 41 includes first insertion hole 41a into which control wire 47 is inserted. Exposed portion 48 has the right end electrically connected to controller 43 via first insertion hole 41a. Exposed portion 48 has the left end electrically connected to wireless module 45.
With this configuration, base 41 is above third control wire 47c due to first insertion hole 41a which is included in base 41 and into which second control wire 47b is inserted. Consequently, base 41 reflects radio waves above second antenna 147c, which makes it possible to reduce a decline of the directivity.
It is to be noted that second control wire 47b inserted into first insertion. hole 41a allows third control wire 47c to be easily fixed to base 41.
Furthermore, in luminaire 1 according to the embodiment, base 41 further includes second insertion hole 41b into which control wire 47 is inserted and which is aligned with first insertion hole 41a in the horizontal direction. The left end of exposed portion 48 is electrically connected to wireless module 45 via second insertion hole 41b.
With this configuration, first insertion hole 41a and second insertion hole 41b are not continuous unlike a long hole. Consequently, base 41 reflects radio waves above second antenna 147c, which makes it possible to reduce a decline of the directivity.
It is to be noted that second control wire 47b inserted into first insertion hole 41a and fourth control wire 47d inserted into second insertion hole 41b allow third control wire 47c to be easily fixed to base 41.
Moreover, in luminaire 1 according to the embodiment, base 41 supports circuit board 61 on which light source 62 is mounted. The front surface of base 41 includes recess 42 which is recessed to house circuit board 61. Exposed portion 48 is not on a straight line connecting light source 62 and the front surface of base 41 excluding recess 42.
With this configuration, it is difficult to block light from light source 62 due to exposed portion 48, which makes a user feel discomfort less easily. If exposed portion 48 is on the straight line connecting light source 62 and the front surface of base 41 excluding recess 42, exposed portion 48 is likely to cast a shadow. Luminaire 1, however, does not easily produce a shadow due to exposed portion 48.
Furthermore, in luminaire 1 according to the embodiment, base 41 includes recess 42 which is recessed to house circuit board 61. Exposed portion 48 is disposed in recess 42.
With this configuration, it is difficult to block light from light source 62 due to exposed portion 48, and exposed portion 48 is not easily seen via cover 3, which make the user feel discomfort much less easily.
Moreover, in luminaire 1 according to the embodiment, base 41 is long. Control wire 47 extends along base 41.
With this configuration, by disposing control wire 47 along base 41, it is possible to achieve space-saving.
Hereinafter, a configuration of a luminaire according to variation 1 of the embodiment will be described with reference to
Variation 1 of the embodiment differs from the embodiment in that spacer 63 is provided between circuit board 61 and base 41. The other structural elements of luminaire 1 in variation 1 are the same as those of luminaire 1 in the embodiment, and description thereof is omitted accordingly.
In variation 1of the embodiment, spacer 63 separates light-emitting module 60 from the bottom surface of recess 42 in base 41, which makes it difficult for exposed portion 48 to be on a straight line connecting light source 62 and the front surface of base 41 excluding recess 42.
Hereinafter, a configuration of an illumination system according to variation 2 of the embodiment will be described with reference to
As illustrated in
Terminal device 101 is, for example, a device such as a smartphone and a single-purpose remote controller, and is capable of controlling luminaires 1. Operations such as turning on, turning off, dimming (brightness adjustment), and toning (emission color (color temperature) adjustment) of light-emitting modules 60 are performed according to an operation made with terminal device 101. It is to be noted that luminaires 1 may be individually selected, and operations such as turning on, turning off, dimming (brightness adjustment), and toning (emission color (color temperature) adjustment) may be performed using terminal device 101.
Although the luminaire and the illumination system according to the present disclosure have been described base on the embodiment and variations 1 and 2 of the embodiment, the present disclosure is not limited to the embodiment and variations 1 and 2 of the embodiment.
It is to be noted that in the present disclosure, a first antenna and a second antenna may be controlled such that a signal of one of the first antenna and the second antenna which has a higher radiation intensity is preferentially used, and noise of a signal received to improve signal quality, for example, may be reduced by an EMI reduction filter etc.
It is to be noted that a control wire may include first to third control wires in the present disclosure. Specifically, the third control wire has the right end which may be connected to the second control wire, and the left end which may be connected to a wireless module. In this case, base 41 may include only first insertion hole 41a. In other words, second insertion hole 41b is not an indispensable structural element.
It is to be noted that although the operations such as turning on, turning off, and dimming of the luminaire are performed using an input device in the present disclosure, the operations may be performed using an operation panel installed on a wall. In such a case, a control wire for transmitting signals between the operation panel and the luminaire is connected to the luminaire.
Moreover, in the present disclosure, the luminaire may be communicable with a program distribution server via the Internet. The luminaire may include hardware corresponding to functions, and a storage which is rewritable and is for causing the hardware to operate according to the functions. To cause the luminaire to emit light according to a function, software (program) which corresponds to the function and is for causing the hardware to operate is stored in the storage. The software may be stored in the storage in advance, or a program distributed by the program distribution server may be received by and stored in the storage. When a program distributed by the program distribution server is to be received, a user of the luminaire selects a desired function (program) using an input device such as a smartphone and a tablet terminal. Consequently, the selected program is distributed to the luminaire by the program distribution server, and the distributed program is stored into the storage in the luminaire. Accordingly, the user can use the function of the luminaire corresponding to the distributed program.
While the foregoing has described one or more embodiments and/or other examples, it is understood that various modifications may be made therein and that the subject matter disclosed herein may be implemented in various forms and examples, and that they may be applied in numerous applications, only some of which have been described herein. It is intended by the following claims to claim any and all modifications and variations that fall within the true scope of the present teachings.
Number | Date | Country | Kind |
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2016-087471 | Apr 2016 | JP | national |