The present invention is generally related to wireless networks and more specifically to luminaires having a wireless antenna.
People are increasingly relying on network connectivity. For example, people rely on network connectivity to provide access email, the Internet, mobile applications, centralized databases, and information management systems. Accordingly, indoor and outdoor wireless networks are becoming increasingly important. But often the desired location, for example, parks, streets, buildings, and outdoor venues, in which these wireless networks are installed, require that the network equipment, for example, a wireless antenna, be concealed for aesthetic purposes. Accordingly, there is a need for devices and methods that conceal network equipment without compromising the functionality of the network equipment.
In some embodiments, a luminaire includes a housing defining an interior volume. The luminaire includes a lamp within the interior volume. The lamp is configured to emit light. The luminaire also includes a first wireless antenna positioned within the interior volume. The first wireless antenna is configured to transmit or receive a wireless signal along a first direction and to be operatively coupled to an access point. In some embodiments, the first direction is downward towards the ground.
In some embodiments, the first wireless antenna is positioned entirely within the interior volume.
In some embodiments, the luminaire includes a first reflective surface positioned within the interior volume and configured to redirect the wireless signal along the first direction. The luminaire can also include a second reflective surface positioned within the interior volume. The second reflective surface can be configured to redirect a first light ray emitted from the lamp in a second direction. The luminaire can also include a third reflective surface positioned within the interior volume. The third reflective surface can be configured to redirect a second light ray emitted from the lamp in a third direction different than the second direction. The second reflective surface and the third reflective surface can form a V shape in some embodiments. The second reflective surface is between the lamp and the first reflective surface in some embodiments. In some embodiments, the second reflective surface is between the lamp and the first wireless antenna. The second reflective surface can be planar and angled downward toward the ground from an inner side to an outer side.
The second reflective surface can be coupled to a first side of the housing. The lamp can also be coupled to the first side of the housing. The first side of the housing can be a top side. In some embodiments, the first wireless antenna is coupled to a second side of the housing opposite the first side of the housing. In some embodiments, the second side of the housing is a bottom side. In some embodiments, the first wireless antenna is coupled to the first side of the housing.
In some embodiments, the first wireless antenna is configured to transmit or receive a wireless signal along a third direction, and the first reflective surface is configured to redirect the wireless signal along the third direction.
The first reflective surface can be conical in some embodiments. The first reflective surface and the first wireless antenna can be coaxial.
The luminaire can also include a second wireless antenna positioned within the interior volume and configured to transmit or receive a second wireless signal along a second direction different than the first direction, and a third wireless antenna positioned within the interior volume and configured to transmit or receive a third wireless signal along a third direction different than the first direction and the second direction. The second wireless antenna and the third wireless antenna can be positioned entirely within the interior volume.
In some embodiments, the first wireless antenna is configured to be operatively coupled to an access point positioned outside the interior volume. In some embodiments, the first wireless antenna is configured to be operatively coupled to an access point positioned in an enclosure on the ground.
In some embodiments, the first wireless antenna is configured to be operatively coupled to an access point positioned inside the interior volume.
In some embodiments, the first wireless antenna is a directional antenna, an omnidirectional antenna, or a dipole antenna.
The lamp can be an LED lamp. In some embodiments, the LED lamp is configured to be electrically coupled to a power inserter that powers the access point.
Further features and advantages, as well as the structure and operation of various embodiments, are described in detail below with reference to the accompanying drawings. It is noted that the embodiments of the invention are not limited to the specific embodiments described herein. Such described embodiments are presented herein for illustrative purposes only. Additional embodiments will be apparent to persons skilled in the relevant art(s) based on the teachings contained herein.
Embodiments will now be described, by way of example only, with reference to the accompanying schematic drawings in which:
Features and advantages of the present invention will become more apparent from the detailed description set forth below when taken in conjunction with the drawings, in which like reference characters identify corresponding elements throughout. In the drawings, like reference numbers generally indicate identical, functionally similar, and/or structurally similar elements.
While the invention is described herein with reference to illustrative embodiments for particular applications, it should be understood that the invention is not limited thereto. Those skilled in the art with access to the teachings provided herein will recognize additional modifications, applications, and embodiments within the scope thereof and additional fields in which the invention would be of significant utility.
The embodiments described, and references in the specification to “one embodiment,” “an embodiment,” “an example embodiment,” “an example,” “some embodiments,” etc., indicate that the embodiments described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is understood that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
In this application, “luminaire” refers generally to a lighting unit primarily for providing light for illumination purposes and that includes a lamp and a ballast (when applicable) together with any parts designed to distribute the light, to position and protect the lamp, and to connect the lamp to the power supply.
Referring generally to the below description and accompanying figures, luminaires that include a housing, a lamp, and a wireless antenna positioned within the housing to conceal the antenna from the view of people in the vicinity of the luminaire without compromising the functionality of the wireless antenna are disclosed.
In some embodiments, luminaire 100 is configured for outdoor use. For example, luminaire 100 can be configured for roadway or street lighting, area or pathway lighting, flood lighting, tunnel lighting, or any other outdoor lighting application where network connectivity is also desired. As shown in
In some embodiments, luminaire 100 is configured for indoor use. For example, luminaire 100 can be used for residential lighting, retail lighting, office lighting, industrial lighting, warehouse lighting, or any other indoor lighting application where network connectivity is desired.
Luminaire 100 includes housing 104. Housing 104 is configured to protect and/or support one or more components of luminaire 100. Housing 104 can have a first side 105, for example, a bottom side, and an opposing second side 107, for example, a top side.
Housing 104 can be configured to protect and support lamp 108 and wireless antenna 110. Housing 104 defines an interior volume 106 configured to receive lamp 108 and wireless antenna 110. In some embodiments, interior volume 106 is at least 60 in3. This volume can accommodate a wireless antenna usable over a reasonable area, and a lamp with brightness reasonable for illumination purposes. Volume 106 may be sufficiently large to accommodate the largest light sources, such as stadium lights or spotlights. In some embodiments, volume 106 will be not more than 20,000 in3. Preferably, interior volume 106 ranges from 1,000 in3 to 12,000 in3, which should encompass most streetlights and similar light sources. Interior volume 106 can have any suitable shape. For example, as shown in
In some outdoor embodiments, housing 104 can be configured to be mounted to a top of a post (as shown in
Interior volume 106 is bounded by at least one surface that allows both light rays emitted from lamp 108 and a wireless signal transmitted to or from wireless antenna 110 to pass between interior volume 106 and the atmosphere surrounding housing 104. In some embodiments, this surface is defined by a portion of housing 104. In such embodiments, housing 104 can include a transparent or translucent surface that allows light and wireless signals to pass. In some embodiments, the transparent or translucent surface is a transparent or translucent glass, plastic, metal mesh, or any other suitable material.
In some embodiments, the surface that allows both light rays emitted from lamp 108 and a wireless signal transmitted to or from wireless antenna 110 to pass between interior volume 106 and the atmosphere surrounding housing 104 is simply an opening of interior volume 106 at the atmosphere surrounding housing 104 and defined by housing 104. The opening is defined by the imaginary surface that imitates the shape that would be obtained by attaching a plastic wrap to the edges of housing 104 with a zero pressure difference between interior volume 106 and the atmosphere surrounding housing 104.
In some embodiments, the at least one surface that bounds interior volume 106 and that allows light emitted from lamp 108 and a wireless signal transmitted to or from wireless antenna 110 to pass surrounds substantially the entire perimeter of housing 104, for example, at least 70 percent of the perimeter. In some embodiments, the at least one surface that bounds interior volume 106 and that allows light emitted from lamp 108 and a wireless signal transmitted to or from wireless antenna 110 to pass surrounds less than substantially the entire perimeter of housing 104, for example, less than 70 percent of the perimeter.
Luminaire 100 includes lamp 108 positioned within interior volume 106 of housing 104. In some embodiments, lamp 108 is positioned entirely within interior volume 106. In some embodiments, lamp 108 is positioned partially within interior volume 106.
Lamp 108 is a device that generates artificial light. For example, lamp 108 can be a filament lamp (e.g., incandescent, halogen, or halogen-IR), a discharge lamp (e.g., fluorescent or high intensity discharge), a light emitting diode (LED) lamp, or any other lamp suitable for a particular use of the luminaire.
In some embodiments, lamp 108 emits a plurality of light rays along one or more directions. For example, as illustrated in
In some embodiments as shown in
In some embodiments, luminaire 100 includes a ballast, for example, a magnetic ballast, configured to start and to properly control the flow of current to lamp 108.
Luminaire 100 includes first wireless antenna 110 positioned within interior volume 106 of housing 104. In some embodiments, wireless antenna 110 is positioned entirely within interior volume 106. In such embodiments, wireless antenna 110 is concealed from the view of people in the vicinity of luminaire 110 while not compromising the functionality of wireless antenna 110 because a wireless signal transmitted to or from wireless antenna 110 passes between interior volume 106 and the atmosphere surrounding housing 104.
In some embodiments, wireless antenna 110 is positioned partially within interior volume 106.
Wireless antenna 110 is configured to be operatively coupled to an access point (not shown in
Depending on the application, antenna 110 can be omnidirectional, dipole, or directional, and can be a single or dual band antenna. As shown in
In some embodiments as shown in
In some embodiments as shown in
In some embodiments, reflector assembly 112 is positioned between lamp 108 and wireless antenna 110. In some embodiments when reflector assembly 112 is positioned between lamp 108 and wireless antenna 110, reflector assembly 112 is configured to shield wireless antenna 110 from heat generated by lamp 108. In some embodiments, reflector assembly 112 is configured to be a heat sink to dissipate heat generated by lamp 108.
In some embodiments, first reflective surface 118 has any other suitable non-conical shape for redirecting wireless signals, for example, a concave or convex shape. In some embodiments, reflector assembly 112 includes two or more reflective discontinuous surfaces configured to redirect the wireless signals transmitted to or from wireless antenna 110 in directions toward the ground surface.
Reflector assembly 112 can also include one or more reflective surfaces configured to redirect light rays emitted from lamp 108. For example, referring collectively to
In some embodiments, second and third reflective surfaces 114 and 116 are planar. In some embodiments as shown in
In some embodiments, reflector assembly 112, including first, second, and third reflective surfaces 118, 114, and 116, is coupled to second side 107 of housing 104, which is the same side to which lamp 108 is coupled. Referring to
Housing mounting bracket 134 can also include a third arm 142 coupled to extending portion 140 at one end of the third arm 142. At the other end of third arm 142, first reflective surface 118 is coupled to third arm 142. In some embodiments, first reflective surface 118 is coupled to third arm 142 such that first reflective surface 118 is positioned between the prongs of the V formed by second and third reflective surfaces 114 and 116 as best seen in
In some embodiments, wireless antenna 110 is coupled to the same side of housing 104 as lamp 108.
In some embodiments, a luminaire includes more than one wireless antenna. For example, the luminaire can include two, three, four, or more than four wireless antennas.
Referring collectively to
In some embodiments, antennas 333, 346, 348 and 350 are positioned entirely within interior volume 106 to conceal antennas 333, 346, 348 and 350 from the view of people in the vicinity of the luminaire without compromising the functionality of antennas 333, 346, 348 and 350.
In other embodiments, antennas 333, 346, 348 and 350 are positioned partially within interior volume 106.
Referring collectively to
In some embodiments, antennas 458, 468, and 460 are positioned entirely within interior volume 106 to conceal antennas 458, 468, and 460 from the view of people in the vicinity of the luminaire without compromising the functionality of antennas 458, 468, and 460.
In other embodiments, antennas 458, 468, and 460 are positioned partially within interior volume 106.
In some embodiments, luminaire 400 includes a reflector 466 configured to shield each antennas 458, 468, and 460 from wireless signals transmitted to or from each other. In some embodiments, reflector 466 is cylindrical and positioned along axis 103 of luminaire 400. In other embodiments, reflector 466 has any other suitable non-cylindrical shape or configuration.
In some embodiments, a luminaire does not include a reflector assembly.
In some embodiments, the wireless antenna(s) in any one of the above described embodiments are configured to be operatively coupled to an access point positioned outside interior volume 106 defined by housing 104.
In some embodiments (not shown), the wireless antenna(s) in any one of the above described embodiments are configured to be operatively coupled to an access point positioned inside interior volume 106, for example, an access point mounted to either first or second sides 105 and 107.
In some embodiments, lamp 108 is configured to be electrically coupled to a power source outside housing 104. For example, in some embodiments, lamp 108 is configured to be electrically coupled to a power inserter that powers access point 774. For example, the power inserter can be a modified Antronix power inserter that strips power from an 89V cable plant.
While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example, and not limitation. It will be apparent to persons skilled in the relevant art that various changes in form and detail can be made therein without departing from the spirit and scope of the invention.
The present invention has been described above with the aid of functional building blocks and method steps illustrating the performance of specified functions and relationships thereof. The boundaries of these functional building blocks and method steps have been arbitrarily defined herein for the convenience of the description. Alternate boundaries can be defined so long as the specified functions and relationships thereof are appropriately performed. Any such alternate boundaries are thus within the scope and spirit of the claimed invention. Thus, the breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents.
This application is a continuation of U.S. application Ser. No. 17/671,047, filed Feb. 14, 2022, which is a continuation of U.S. application Ser. No. 17/329,910, filed May 25, 2021, which is a continuation of U.S. application Ser. No. 16/434,297, filed Jun. 7, 2019, which issued as U.S. Pat. No. 11,015,792 on May 25, 2021, which is a continuation of U.S. application Ser. No. 15/650,113, filed Jul. 14, 2017, which issued as U.S. Pat. No. 10,337,714 B1 on Jul. 2, 2019, which is a continuation of U.S. application Ser. No. 14/496,537, filed Sep. 25, 2014, which issued as U.S. Pat. No. 9,726,360 B1 on Aug. 8, 2017, all of which are incorporated by reference herein.
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Number | Date | Country | |
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Parent | 17671047 | Feb 2022 | US |
Child | 18152695 | US | |
Parent | 17329910 | May 2021 | US |
Child | 17671047 | US | |
Parent | 16434297 | Jun 2019 | US |
Child | 17329910 | US | |
Parent | 15650113 | Jul 2017 | US |
Child | 16434297 | US | |
Parent | 14496537 | Sep 2014 | US |
Child | 15650113 | US |