In an embodiment, the present disclosure relates to a lighting assembly which may be mounted on a pole for use as a street light or a parking lot light, particularly in an outdoor setting. In an embodiment, the present disclosure relates to a fixture that provides improved thermal management of heat generating components of the lighting fixture. In an embodiment, the present disclosure relates to a fixture that can he hung from a ceiling.
In some instances, lighting fixtures are mounted to poles by a bracket. Each lighting fixture has its own particular bracket that must be used to mount the lighting fixture to the pole. This results in a large inventory in brackets which is expensive to maintain.
In addition to light, lighting sources and the electrical components used to drive the lighting sources generate heat during operation. This heat must be managed to allow for proper operation of the lighting fixture and maximum life of the lighting source and the electrical components.
A universal mounting system according to some embodiments of the disclosure is used to mount a lighting fixture to a pole, which may be an outdoor pole. The universal mounting system includes a bracket attached to the pole by a mounting fastener, and which is attached to the lighting fixture. The bracket has a portion which inserts into or around the pole and the mounting fastener extends through the pole and through the bracket. The universal mounting system can be used to mount a lighting fixture on any pole by reusing existing holes or drilling new holes through the pole.
This Summary is provided merely for purposes of summarizing some example embodiments so as to provide a basic understanding of some aspects of the disclosure. Accordingly, it will be appreciated that the above described example embodiments are merely examples and should not be construed to narrow the scope or spirit of the disclosure in any way. Other embodiments, aspects, and advantages of various disclosed embodiments will become apparent from the following detailed description taken in conjunction with the accompanying drawings which illustrate, by way of example, the principles of the described embodiments.
The organization and manner of the structure and operation of the disclosed embodiments, together with further objects and advantages thereof, may best be understood by reference to the following description, taken in connection with the accompanying drawings, which are not necessarily drawn to scale, wherein like reference numerals identify like elements in which:
While the disclosure may be susceptible to embodiment in different forms, there is shown in the drawings, and herein will be described in detail, specific embodiments with the understanding that the present disclosure is to be considered an exemplification of the principles of the disclosure, and is not intended to limit the disclosure to that as illustrated and described herein. Therefore, unless otherwise noted, features disclosed herein may be combined together to form additional combinations that were not otherwise shown for purposes of brevity. It will be further appreciated that in some embodiments, one or more elements illustrated by way of example in a drawing(s) may be eliminated and/or substituted with alternative embodiments within the scope of the disclosure.
A universal mounting system 20, 20a, 20b, 20c is provided for mounting a lighting fixture 22, particularly an outdoor lighting fixture, to an any pole 24 that extends from the ground. The pole 24 has a lower end which is attached to the ground, an open upper end 26 and a passageway 25 that runs through the pole from its lower end to its upper end. The pole 24 is usually square but may be cylindrical, but may take other forms, such as having a square or rectangular cross-section. The universal mounting system 20, 20a, 20b, 20c is configured for applications such as a parking lot lighting, auto dealerships, display (e.g. building-elevation, billboard, etc.) application, etc. When the universal mounting system 20, 20a, 20b, 20c is mounted to an existing pole 24, no modification to the existing infrastructure is necessary other than to occasionally drill a pair of aligned holes 28a, 28b proximate to the top end of the pole 24, and attaching the universal mounting system 20, 20a, 20b, 20c and lighting fixture 22 to the pole 24 as described herein. Therefore, the universal mounting system 20, 20a, 20b, 20c is easily used to retrofit any existing pole 24.
The lighting fixture 22 includes a cover 30 and a pan 32 that mates together to form an internal cavity therewithin. The cover and pan 30, 32 form a housing which surrounds one or more lighting sources 34, such as LEDs, and includes alone 36 (e.g., a plastic sheet, a glass sheet, etc.) that allows light from the one or more lighting sources 34 to shine downwardly from the lighting fixture 22. Other electronics may be mounted within the internal cavity formed by the cover and pan 30, 32 as discussed herein.
As shown in
The pan 32 includes a lower wall 42 and a side wall 44 which extends upwardly therefrom to form an open ended box-like structure. As shown, the lower wall 42 is rectangular and the side wall 44 is formed of four portions which are joined together at their ends. The pan 32 may take other shapes. The lower wall 42 has a plurality of spaced apart apertures 46, 48, 50 therethrough. As shown, three apertures 46, 48, 50 are provided, however, more or fewer than three may be provided. As shown, aperture 48 is centrally located and surround by a wall section 52 of the lower wall 42. As shown, the aperture 48 is rectangular, but other shapes may be provided. Lighting sources 34 are mounted in the first and third apertures 46, 50 in a manner to allow the light to shine downwardly. The shape and orientation of the cover 30 and pan 32 relative to the lighting sources 34 is configured to provide a full cut off such that light does not project above the plane of the cover 30. The lighting fixture 22 is preferably “dark-sky” compliant or friendly. The aperture 48 is open such that the internal cavity formed by the cover 30 and pan 32 can be accessed.
As shown in
The universal mounting system 20, 20a, 20b, 20c includes a bracket 54, 54a, 54b, 54c which is attached to the upper end 26 of the pole 24 as described herein, a mounting fastener 56 which extends through the bracket 54, 54a, 54b, 54c and an upper end portion 26a of the pole 24, a nut 58 which attaches to the mounting fastener 56, and a plurality of fasteners 60 for attaching the bracket 54, 54a, 54b, 54c to the wall section 52 of the lower wall 42 of the lighting fixture 22. The component pieces of the universal mounting system 20, 20a, 20b, 20c may be formed of galvanized steel but may be any other metal (e.g., steel, aluminum), plastic, and/or composite material, or a combination thereof.
The bracket 54, 54a, 54b, 54c has an housing 62, 62a, 62b, 62c and a fastener mount 64, 64a, 64b, 64c as described herein. The fastener mount 64, 64a, 64b, 64c extends from the housing 62, 62a, 62b, 62c at an angle relative thereto. The fastener mount 64, 64a, 64b, 64c has at least one opening 66, 66a, 66b, 66c therethrough as described herein. The housing 62, 62a, 62b, 62c may be formed separately from the fastener mount 64, 64a, 64b, 64c such that the fastener mount 64, 64a, 64b, 64c is moveable relative to the housing 62, 62a, 62b, 62c. The housing 62, 62a, 62b, 62c and the fastener mount 64, 64a, 64b, 64c may be integrally formed, or may be formed of different components and fixedly secured together.
To mount the bracket 54, 54a, 54b, 54c to the pole 24, the housing 62, 62a, 62b, 62c seats on the upper end 26 of the pole 24 and overhangs the upper end of the pole 24, and the fastener mount 64, 64a, 64b, 64c mates with the upper end portion 26a of the pole 24 and is attached to the upper end portion 26a of the pole 26. The mounting fastener 56 is passed through the holes 28a, 28b in the pole 24 and through the at least one opening 66, 66a, 66b, 66c in the fastener mount 64, 64a, 64b, 64c. The nut 58 is attached to the end of the mounting fastener 56 that extends outwardly from the pole 24 to secure the bracket 54, 54a, 54b, 54c to the pole 24. The bracket 54, 54a, 54b, 54c is then attached to the wall section 52 of the lower wall 42 by the fasteners 60 to secure the bracket 54, 54a, 54b, 54c to the lighting fixture 22.
The base wall 68 has at least one passageway 74 therethrough through which wires can be fed from the pole 24 through the bracket 54 to connect to the lighting sources 34 and other electronics in the lighting fixture 22. As shown, a pair of spaced apart passageways 74 are provided. In this embodiment, the base wall 68 further has a pair of spaced apart, linearly aligned apertures 76 therethrough. If a pair of passageways 74 are provided, the apertures 76 may be positioned between the passageways 74. A hole 80 for mounting a camera or sensor 82 may also be provided through the base wall 68 at position which is spaced from the passageway(s) 74 and apertures 76. The hole 80 may be provided in a door 81 which can be opened or closed to allow access to components within the bracket 54. A pair of holes 80 may be provided for mounting both an occupancy sensor and a camera, to allow for additional energy savings and security. The sensor 82 may be used to sense when to turn the lighting sources 34 on or off, for example, the sensor 82 can sense when dusk and dawn occurs. The lighting fixture 22 may also be configured to provide wired or wireless communications capabilities, one or more control algorithms based on sensor feedback, built-in redundancy, as is known in the prior art.
In this embodiment, the fastener mount 64 is formed separately from the housing 62 and is formed of a pair of fasteners. Each fastener has an elongated threaded shank 84 with a loop 86 at an end through which the opening 66 is formed. The fasteners may be formed from eye bolts. The threaded shanks 84 extend through the apertures 76 in the base wall 68 such that the openings 66 are below the base wall 68 and spaced therefrom. Nuts 88 are secured to the upper ends of the threaded shanks 66 and seat against the upper surface of the base wall 68 to secure the fasteners to the housing 62.
In use, the lower surface of the base wall 68 seats on the upper end of the pole 24, and the lower ends of the threaded shanks 84 extend into the passageway 25 of the pole 24. The passageway(s) 74 align with the passageway 25 through the pole 24. The openings 66 in the threaded shanks 84 align with the holes 28a, 28b in the pole 24. The base wall 68 is larger than the upper end 26 of the pole 24 such that the base wall 68 overhangs the upper end 26 of the pole 24. The mounting fastener 56 is inserted through one hole 28a in the pole 24, through the openings 66 in the threaded shanks 84, and through the other hole 28b in the pole 24. The nut 58 is attached to the end of the mounting fastener 56 that extends outwardly from the pole 24. This secures the bracket 54 to the pole 24. The bracket 54 is then attached to the wall section 52 of the lower wall 42 of the lighting fixture 22 by the fasteners 60 that extend through the flange(s) 72 and into the wall section 52.
As an alternative, the lower ends of the threaded shanks 84 may seat against the exterior of the pole 24. The holes 28a, 28b in the pole 24 can be predrilled such that the openings 66 align with the predrilled holes 28a, 28b, or the holes 28a, 28b can be drilled after the bracket 54 is seated on the upper end 26 of the pole 24. In this alternative embodiment, the mounting fastener 54 is inserted through the opening 66 in one threaded shank 84, through the hole 28a in the pole 24, through the other hole 28b in the pole 24, and then through the opening 66 of the other threaded shank 84. The nut 58 is attached to the end of the mounting fastener 56 that extends outwardly from the pole 24. This secures the bracket 54 to the pole 24. The bracket 54 is then attached to the wall section 52 of the lower wall 42 of the lighting fixture 22 by the fasteners 60 that extend through the flange(s) 72 and into the wall section 52.
The universal mounting system 20 can be easily removed from the pole 24 by reversing the order of assembly. The universal mounting system 20 can he easily removed from the lighting fixture 22 by removal of the fasteners 60 from the wall section 52 of the pan 32. The universal mounting system 20 can then be used on another pole by reusing existing holes or drilling new holes through the pole.
In this embodiment, the fastener mount 64 may be formed integrally with the u housing 62, or formed separately and then fixedly attached to the housing 62. In this embodiment, the fastener mount 64 is formed of a pair of spaced apart walls 92, 94 which extend downwardly from the base wall 68. Each wall 92, 94 has an opening 96, 98 proximate to an end thereof, such that the openings 96, 98 are spaced from the lower surface of the base wall 68 by a predetermined distance. The passageway(s) 74 are provided between the walls 92, 94.
In use, the lower surface of the base wall 68 seats on the upper end of the pole 24 as previously described and the walls 92, 94 extend into the passageway 25 of the pole 24. The passageway(s) 74 align with the passageway 25 through the pole 24. The openings 96, 98 in the walls 92, 94 align with the holes 28a, 28b in the pole 24. The mounting fastener 56 is inserted through one hole 28a in the pole 24, through the openings 96, 98 in the walls 92, 94, and through the other hole 28a in the pole 24. The nut 58 is attached to the end of the mounting fastener 56 that extends outwardly from the pole 24. This secures the bracket 54a to the pole 24. The bracket 54a is then attached to the wall section 52 of the tower wall 42 of the lighting fixture 22 by the fasteners 60 that extend through the flange(s) 72 and into the wall section 52.
The universal mounting system 20a can be easily removed from the pole 24 by reversing the order of assembly. The universal mounting system 20a can be easily removed from the lighting fixture by removal of the fasteners 60 from the wall section 52 of the pan 32. The universal mounting system 20a can then be used on another pole by reusing existing holes or drilling new holes through the pole.
In this embodiment, the fastener mount 64 may be formed integrally with the housing 62, or formed separately and then fixedly attached to the housing 62. In this embodiment, like that of the second embodiment, the fastener mount 64 is formed of a pair of spaced apart walls 92a, 94a which extend downwardly from the base wall 68. Each wall 92a, 94a has an opening 96a, 98a proximate to an end thereof, such that the openings 96a, 98a are spaced from the lower surface of the base wall 68 by a predetermined distance. The passageway(s) 74 are provided between the walls 92a, 94a. In this embodiment, the walls 92a, 94a are spaced further apart from each other than in the second embodiment.
In use, the lower surface of the base wall 68 seats on the upper end 26 of the pole 24 as previously described and the walls 92a, 94a abut against the exterior surfaces of the pole 24. The passageway(s) 74 align with the passageway 25 through the pole 24. The openings 96a, 98a in the walls 92a, 94a align with the holes 28a, 28b in the pole 24. The mounting fastener 54 is inserted through the opening 96a in wall 92a, through both holes 28a, 28b in the pole 24, and through the opening 98a in the other wall 94a. The nut 58 is attached to the end of the mounting fastener 54 that extends outwardly from the wall 94a. This secures the bracket 54b to the pole 24. The bracket 54b is then attached to the wall section 52 of the lower wall 42 of the lighting fixture 22 by the fasteners 60 that extend through the flange(s) 72 and into the wall section 52. In this embodiment, the holes 28a, 28b in the pole 24 can be predrilled such that the openings 96a, 98a align with the predrilled holes 28a, 28b, or the holes 28a, 28b can be drilled after the bracket 54b is seated on the upper end 26 of the pole 24.
The universal mounting system 20b can be easily removed from the pole 24 by reversing the order of assembly. The universal mounting system 20b can be easily removed from the lighting fixture 22 by removal of the fasteners 60 from the wall section 52 of the pan 32. The universal mounting system 20b can then be used on another pole by reusing existing holes or drilling new holes through the pole.
In this embodiment, the fastener mount 64 may be formed integrally with the housing 62, or formed separately and then fixedly attached to the housing 62. In this embodiment, the fastener mount 64 is formed of a wall 100 which extends downwardly from the base wall 68 and surrounds the passageway(s) 74. The wall 68 may be circular as shown, or may be rectangular, square, etc. The wall 100 has a pair of openings 102, 104 proximate to an end thereof, such that the openings 102, 104 are spaced from the lower surface of the base wall 68 by a predetermined distance.
In use, the lower surface of the base wall 68 seats on the upper end 26 of the pole 24 as previously described and the wall 100 extends into the passageway 25 of the pole 24 such that the passageway(s) 74 align with the passageway 25 through the pole 24. The openings 102, 104 in the wall 100 align with the holes 28a, 28b in the pole 24. The mounting fastener 54 is inserted through one hole 28a in the pole 24, through the openings 102, 104 in the wall 100, and through the other hole 28b in the pole 24. The nut 58 is attached to the end of the mounting fastener 56 that extends outwardly from the pole 24. This secures the bracket 54c to the pole 24. The bracket 54c is then attached to the wall section 52 of the lower wall 42 of the lighting fixture by the fasteners 60 that extend through the flange(s) 72 and into the wall section 52.
The universal mounting system 20c can be easily removed from the pole 24 by reversing the order of assembly. The universal mounting system 20c can be easily removed from the lighting fixture 22 by removal of the fasteners 60 from the wall section 52 of the pan 32. The universal mounting system 20c can then be used on another pole by reusing existing holes or drilling new holes through the pole.
As show, the fastener mount 64 can take a variety of shapes and forms and is not limited to the specific shapes shown herein. In addition, the fastener mount 64 may be formed of a single wall with a single aperture.
The universal mounting system 20, 20a, 20b, 20c can be used to mount a lighting fixture 22 to any pole 24 (which may be a pre-existing pole and the universal mounting system 20, 20a, 20b, 20c is used in a retrofit, or may be a new pole) by reusing existing holes or drilling new holes 28a, 28b into the upper end 26 of the pole 24. The universal mounting system 20, 20a, 20b, 20c supports any type of lighting fixture 22 that has a surface to which the housing 62 can be attached. This eliminates the need for a variety of brackets as was done in the prior art.
A reinforcing channel (not shown) may be provided in the interior or exterior of the base wall 68. The reinforcing channel is an elongated piece of metal having holes that match those of the base wall 68. The reinforcing channel may be formed from steel, aluminum, plastic, or any other material that adds structural strength and rigidity to the universal mounting system 20, 20a, 20b, 20c. Alternatively, the base wall 68 may have a thickened area to provide strength and rigidity to the universal mounting system 20, 20a, 20b, 20.
The universal mounting system 20, 20a, 20b, 20c and/or the other metal structures of lighting fixture 22 may be powder coated or otherwise treated for durability of the metal. The universal mounting system 20, 20a, 20b, 20c is extremely robust and able to withstand environmental abuses of outdoor lighting fixtures 22. The shape of the components of the universal mounting system 20, 20a, 20b, 20c are preferably such that the effective projected area (EPA) relative to strong wind loading is minimized, which correspondingly provides for universal application in all geographic regions, minimized wind loading parameters of the lighting fixture 22.
While the mounting of the pole 26 on the universal mounting system 20, 20a, 20b, 20c is shown as offset to one side of the bracket 54, 54a, 54b, 54c, the mounting of the pole 26 on the universal mounting system 20, 20a, 20b, 20c can be centered on the bracket 54, 54a, 54b, 54c. This centering of the bracket 54, 54a, 54b, 54c on the pole 26 aids in weight distribution due to snow loading, and may aid in wind loading on the lighting fixture 22.
The driver plate 124 is formed of a base plate 132 having an aperture 134 therethrough, a pair of flanges 136 extending downwardly from opposite edges of the base plate 132, a pair of flanges 138 extending upwardly from the base plate 132 along opposite edges of the base plate 132, and a pair of flanges 142 extending upwardly from the base plate 132 along sides of the aperture 134. The flanges 138, 140 are parallel to each other.
As shown, each bracket 126 is generally U-shaped with abase wall 142 and a pair of flanges 144 which extends from upper and lower edges of the base wall 142. The bracket 142 may be a rectangle having a central passageway or may be solid. The upper flange 144a of each bracket 126 attaches to an underside of the base plate 132 of the driver plate 124. The brackets 126 are spaced from the aperture 134 of the driver plate 124 such that the brackets 126 do not overlap the aperture 134. As shown, two brackets 126 are provided.
The drivers 122 are attached to the underside of the base plate 132 of the driver plate 124. As shown, four drivers 122 are provided, with a bracket 126 seating between each pair of drivers 122. The brackets 126 separate the drivers 122 in each pair from each other.
A heat sink 128 seats against a lower end of each pair of drivers 122 is attached to the lower flange 144b of the bracket 126. The heat sink 128 is contact with the drivers 122 to draw heat from the drivers 122 during operation of the lighting fixture 22. The heat sink 128 may be formed of metal. As shown, each heat sink 128 is formed as a flat plate. The heat sink 128 may take over forms.
The driver mount 130 is formed of a base plate 146, a pair of flanges 148 extending upwardly from the base plate 146 along opposite edges of the base plate 146, and a rim 150 extending outwardly from the upper end of each flange 148. The rims 150 are attached to the underside of the base plate 132 of the driver plate 124 on opposite sides of the aperture 134. The base plate 146 abuts against the upper surface of the lower wall 689 of the pan 32. The base plate 146 has passageway(s) 174, spaced apart vias 175 and aperture(s) 176 that align with the passageway(s) 74, vias 75 and aperture(s) 76 in the base plate 68 of the pan 32. The vias 175 are formed in an array. Each via 175 has a small diameter and may range in size from 0.040″ to 0.187″ to correspond in size with the vias 75 in the pan 32. Wires can be fed from the pole 24 through the passageways 74, 174 to connect to the lighting sources 34 and other electronics in the lighting fixture 22. The arrays of vias 75, 175 allow air to flow from the pole 24 into the bracket 54′. The aperture 134 in the driver plate 124 allows the air to flow out of the bracket 54′ and into the internal cavity of lighting fixture 22 and then out of the vias 41. The base plate 146 also has a hole 180 which aligns with hole 80 in the pan 32. The hole 180 may be the same size as the door 81 or be provided in a door 181 which can be opened or closed to allow access to components within the bracket 54′. The camera or sensor 82 extends through holes 80, 180.
As shown in
The driver plate 124, brackets 126, heat sinks 128, and driver mount 130 may be formed of a cured synthetic polymerization composite which includes at least one polymerized resin and at least one additive which is disclosed in U.S. application Ser. No. 14/854,906, filed on Sep. 15, 2015, the disclosure of which is incorporated by reference in its entirety. Alternatively, the components may be formed of a suitable metal, such as steel or aluminum.
The flanges 138 seat within the aperture 48 and the flange(s) 72 are attached to the wall section 52. As such, air can flow through vias 175, through vias 75, through aperture 134 and into the pan 32.
Attention is now invited to
The lighting fixture 22 includes the cover 30 and the pan 32 that mates together to form the internal cavity therewithin. The specifics of the cover 30 and the pan 32 are not repeated herein.
As shown, a pair of light assemblies 220 are mounted within each of the apertures 46, 50 and in the housing formed by the cover 30 and the pan 32. Each light assembly 220 includes heat sink 222 attached to the upper wall 38 of the cover 30, an upper reflector 224 attached to the heat sink 222 and spans the length of the heat sink 222, a lower reflector 226 attached to the heat sink 222 and spans the length of the heat sink 222, and a plurality of lighting sources 34, such as LED lights, mounted on the heat sink 222 such that the light from the lighting sources 34 shines between the reflectors 222, 226. As shown, a pair of light assemblies 220 are mounted in each aperture 46, 50, but a single light assembly 220 or more than two light assemblies 220 can be mounted in each aperture 46, 50.
As best shown in
The upper reflector 224 is formed of a first wall 238 which is horizontal, a second wall 240 extending vertically downwardly from an end of the first wall 238, and a third wall 242 extending from the lower end of the second wall 240 and at an angle relative to the second wall 240. The third wall 242 extends upwardly such that the free end 242a of the third wall 242 is vertically closer to the first wall 238 than the end 242b which is connected to the second wall 240. The first wall 238 and the third wall 242 extend outwardly from the second wall 149 in opposite directions, but could extend in the same direction from the second wall 240. The first wall 238 is attached by suitable means to the lower surface of the upper wall 38 of the cover 30. The free end 242a of the third wall 24 abuts against, passes through, or is close proximity to the third wall 232 of the heat sink 222.
The lower reflector 226 is formed of a first wall 244 which is horizontal, and a second wall 246 extending from an end of the first wall 244 and at an angle relative to the first wall 244. The second wall 246 may be formed of a plurality of wall portions which are angled relative to each other. The first wall 244 is attached by suitable means to the lower surface of the fifth wall 236 of the heat sink 222. The free end 246a of the second wall 246 abuts against or is close proximity to the third wall 232 of the heat sink 222, but is spaced from the third wall 242 of the upper reflector 224.
The lighting sources 34 are mounted on the third wall 232 of the heat sink 222 such that the lighting sources 34 are between the walls 242, 246 of the reflectors 224, 226. As such, the reflectors 224, 226 direct the light from the lighting sources 34 in a determined direction.
In this embodiment, a plurality of fans 248 are mounted on the wall section 52 to cause air to flow within the cavity formed by the cover 30 and pan 32. A bar 250 having a plurality of slots 252 therethrough may be mounted on the wall section 52 proximate to the fans 248. The fans 248 blow air across the heat sinks 222 and the drivers 122 to aid in dissipating heat generated by the lighting sources 34 and the electronics in the drivers 122. The air travels upwardly through the pole, through the universal mounting system 20, 20a, 20b, 20c, through the slots 252, and the fans 248 blow the air throughout the cavity formed by the cover 30 and pan 32.
The cover and pan 30, 32 surround one or more lighting sources 34 and includes a lens 36 (e.g., a plastic sheet, a glass sheet, etc.) that allows light from the one or more lighting sources 34 to shine downwardly from the lighting fixture 222. Other electronics may be mounted within the internal cavity formed by the cover and pan 30, 32 as discussed herein.
Attention is now invited to
The lighting fixture 22 includes the cover 30 and the pan 32 that mates together to form the internal cavity therewithin. The pan 32 is not shown in
As shown, a pair of light assemblies 320 are mounted within each of the apertures 46, 50. Each light assembly 320 includes a heat sink 322 attached to the upper wall 38 of the cover 30, a first reflector 324 attached to the heat sink 322 and spans the length of the heat sink 322, a second reflector 326 attached to the heat sink 322 and spans the length of the heat sink 322, and a plurality of lighting sources 34, such as LED lights, mounted on the heat sink 322 such that the light from the lighting sources 34 shines between the reflectors 322, 326. As shown, a pair of light assemblies 320 are mounted in each aperture 46, 50, but a single light assembly 320 or more than two light assemblies 320 can be mounted in each aperture 46, 50.
Each light assembly 220 includes a pair of heat sinks 322 which are attached to each other by a single upper reflector 424 and a bracket 425, and pair of lower reflectors 426.
The upper reflector 424 is formed of a first wall 460 which is horizontal, a second wall 462 extending outwardly from an end of the first wall 460 and at an angle relative to the first wall 460, a third wall 464 extending outwardly from the opposite end of the first wall 460 and at an angle relative to the first wall 460, side walls 466 extending downwardly from each end of the second wall 462, and side walls 468 extending downwardly from each end of the third wall 464. Each of walls 462, 464 may extend at the same angle from horizontal. The free end 462a of the second wall 462 abuts against, passes through, or is close proximity to the third wall 232 of the heat sink 322. The free end 464a of the second wall 464 abuts against, passes through, or is close proximity to the third wall 232 of the other heat sink 322.
The lower reflectors 426 differ from lower reflector 226 in that the wall 446 is perpendicular to wall 444. As such, the lower reflectors 426 are formed of a first wall 444 which is horizontal, and a second wall 446 extending perpendicularly from an end of the first wall 444. The first wall 444 is attached by suitable means to the lower surface of the fifth wall 236 of the heat sink 322. The free end 446a of the second wall 446 abuts against or is close proximity to the third wall 232 of the heat sink 322, but is spaced from the third wall 442 of the upper reflector 424.
The bracket 425 is generally U-shaped and seats against the first wall 460 of the upper reflector 424 and engages the walls 240 of the heat sinks 322.
The lighting sources 34 seat on the third wall 232 of the heat sink 322 and are positioned between the reflectors 424, 426. The reflectors 424, 426 direct the light from the lighting sources 34 in the desired direction.
In some embodiments, the number of vias 75, 175 may be the same. In some embodiments, more vias 75 are provided in the mounting bracket 54′ than the number of vias 175 in the driver mount 130 so as to promote a chimney effect as the air flows through the universal mounting system 20, 20a, 20b, 20c.
As shown in
As shown in
As also shown in
As shown in
An embodiment of the lighting fixture 720 is shown in
Attention is invited to the embodiment of the lighting fixture 720 shown in
The driver housing assembly 722 includes a pan 732 which is covered by a cover 730 to form a box-like enclosure having a central cavity 740. The driver 122 is mounted within the cavity 740 and may be mounted on the pan 732. Other electronics and electrical components which may generate heat may be mounted within the internal cavity 740 formed by the driver housing assembly 722. The embodiment described and shown herein is exemplary and the enclosure may take other forms.
The pan 732 is a generally U-shaped and is formed from an elongated, horizontal base wall 742 having opposite first and second side edges and opposite ends extending between the side edges, a first upstanding side wall 744 extending from the first side edge of the base wall 742, and a second upstanding side wall 746 extending from the second side edge of the base wall 742. A centerline 748 of the base wall 742 is provided between the ends. The walls 742, 744, 746 define a channel having an open-ended top. In an embodiment, the first and second upstanding side walls 744, 746 are vertical.
As shown in
The cover 730 has a base wall 756 having opposite first and second side edges and opposite ends extending between the side edges, a first depending side wall 758 extending from the first side edge of the base wall 756, a second depending side wall 760 extending from the second side edge of the base wall 756, and an end wall 762, 764 extending from the respective ends of the base wall 756. Each end wall 762, 764 may he greater in height than the side walls 758, 760. Each end wall 762, 764 has a plurality of spaced apart small diameter vias 766, 768 extending from an outer surface to an inner surface thereof. The vias 766, 768 are provided in arrays. As shown, the vias 766, 768 are provided in two rows, with the vias 766, 768 being staggered from each other. The vias 766, 768 may be provided proximate to a top end of each side wall 758, 760. The base wall 756 may have a cutout therein into which an access panel 770 is mounted. The access panel 770 is suitably attached to the cover 730.
The driver housing assembly 722 is formed by seating the cover 730 on top of the pan 732 such that the side walls 758, 760 of the cover 730 engage the side walls 744, 746 of the pan 732. The side walls 758, 760 of the cover 730 may overlap the side walls 744, 746 of the pan 732. The end walls 762, 764 of the cover 730 close the open ends of the pan 732. The cover 730 and the pan 732 are suitably joined together, such as by fasteners. The vias 766, 768 allow for the passage of air from an interior of the driver housing assembly 722 to an exterior of the driver housing assembly 722. Alternatively, the pan 732 may have four upstanding side walls and the cover 730 covers the open upper end of the pan 732.
The heat sink 724 is formed from an elongated, generally U-shaped channel 772 having an end cap 774, 776 closing each end of the channel 772. The channel 772 is formed from a horizontal base wall 778 having opposite first and second side edges and opposite ends extending between the side edges, a first depending side wall 780 extending from the first side edge of the base wall 778, a first flange 782 extending inwardly from the lower end of the side wall 780, a second depending side wall 784 depending from the second side edge of the base wall 778, and a second flange 786 extending inwardly from the lower end of the side wall 784. The walls 778, 780, 784 and flanges 782, 786 define a three-sided, open-ended channel. In an embodiment, the first and second side walls 780, 784 are angled outwardly relative to each other. In an embodiment, the heat sink 724 may be formed of a cured synthetic polymerization composite which includes at least one polymerized resin and at least one additive which is disclosed in U.S. application Ser. No. 14/854,906, filed on Sep. 15, 2015, the disclosure of which is incorporated by reference in its entirety. Alternatively, the heat sink 724 may be formed of a suitable metal, such as aluminum. Each end cap 774, 776 has a plurality of spaced apart small diameter vias 788, 790 extending from an outer surface to an inner surface thereof. The vias 788, 790 are provided in arrays. As shown, the vias 788, 790 are provided in two rows, with the vias 788, 790 being staggered from each other. The vias 788, 790 allow for the passage of air from an interior of the heat sink 724 to an exterior of the heat sink 724.
The one or more lighting sources 34 mount within the heat sink channel 772 and shine downwardly. The heat sink 724 dissipates heat generated by the one or more lighting sources 34. The one or more lighting sources 34 are covered by lens 36 (e.g., a plastic sheet, a glass sheet, etc.) attached to the channel 772 and that allows light from the one or more lighting sources 34 to shine downwardly from the lighting fixture 720. The heat sink 724, end caps 774, 776 and lens 36 form a housing for the lighting sources 34.
The mounting brackets 726 connects the heat sink 724 to the driver housing assembly 722. As shown, each mounting bracket 726 is formed of a horizontal mounting flange 792, a first wall 794 extending from an outer end of the mounting flange 792 and which angles downwardly and outwardly relative to the mounting flange 792, a second horizontal wall 796 which extends from the lower end of the first wall 794 and is parallel to the first wall, and a third wall 798 which extends upwardly from the outer end of the second wall 796. The third wall 798 may extend perpendicularly from the second wall 796. The first, second and third walls 794, 796, 798 form a generally U-shaped recess 800. The first wall 794 has an aperture 802 therethrough through which wiring extends.
At each end of the pan 732, the upper surface of the mounting flange 792 of the mounting bracket 726 abuts against and is attached to the lower surface of the base wall 742 of the pan 732 by suitable means, such as fasteners. The end portion 755 where the cutout 754 is provided overhangs the recess 800 formed by the mounting bracket 726. This allows wiring to pass through the cutout 754 and into the recess 800 and to allow for the passage of air between the driver housing assembly 722 and the mounting bracket 726. At each end of the heat sink 724, the lower surface of the second wall 796 of the mounting bracket 726 is attached to the upper surface of the base wall 778 of the heat sink 724 by suitable means, such as fasteners. As a result of this construction, the majority of any heat sink 724 which is mounted directly below the driver housing assembly 722 is separated from the driver housing assembly 722 by a gap 804, see
The end caps 774, 776 may be formed as part of a cover 806 which closes the recess 800 of the respective mounting bracket 726. As shown, each cover 806 is formed of an upper horizontal wall 808, a lower vertical wall 810 which depends from an outer end of the upper wall 808, and side walls 810, 812 which extend downwardly at the side edges of the upper and lower walls 808, 810. A lower surface of the upper wall 808 of the cover 806 abuts an upper surface of the mounting flange 792 of the mounting bracket 726. The side walls 810, 812 of the cover 806 engage the side edges of the first, second and third walls 794, 796, 798 of the mounting bracket 726. A portion of the lower wall 810 of the cover 806 forms the end caps 774, 776. Therefore, as shown, the end caps 774, 776 of the heat sink 724 may be integrally formed as part of the covers 806. Alternatively, the end caps 774, 776 may be formed separately from the covers 806 and attached to the heat sink 724. The upper wall has a cutout into which the end of the driver housing assembly 722 seats. Respective covers 806 and mounting brackets 726 are suitably joined together, such as by fasteners or by tabs on one of the cover 806 and mounting bracket 726 extending in openings in the other of the cover 806 and the mounting bracket 726.
The vias 750, 766, 768, 788, 790 may have a diameter of which range in size from 0.040″ to 0.187″, may be approximately 0.07″, and more particularly a diameter of 0.068″. The vias 750, 766, 768, 788, 790 are small to prevent the intrusion of dust and other contaminants into the driver housing assembly 722 and into the heat sink 724, while allowing for air flow into the driver housing assembly 722 and into the heat sink 724. The passage of air allows for convective heat transfer. The vias 750, 788, 790 through the end caps 774, 776 and through the base wall 742 of the driver housing assembly 722 allow cool air to enter into the heat sink 724 and into the driver housing assembly 722. The vias 766, 768 through the end walls 762, 764 of the driver housing assembly 722 allows warm air to vent out of the lighting fixture 720.
In the embodiment as shown in
The lighting fixture 720, 720′ is suspended from a ceiling or other structure such that the lighting sources 34 shine downwardly into the space to be illuminated. A mount 814, see
The driver housing assembly 722, the mounting brackets 726, the end caps 774, 776 and covers 806 may be formed of metal. The driver housing assembly 722, the mounting brackets 726, the end caps 774, 776 and covers 806 may be powder coated or otherwise treated for durability of the metal. The lighting fixture 720 is extremely robust.
While particular embodiments are illustrated in and described with respect to the drawings, it is envisioned that those skilled in the art may devise various modifications without departing from the spirit and scope of the appended claims. It will therefore be appreciated that the scope of the disclosure and the appended claims is not limited to the specific embodiments illustrated in and discussed with respect to the drawings and that modifications and other embodiments are intended to be included within the scope of the disclosure and appended drawings. Moreover, although the foregoing descriptions and the associated drawings describe example embodiments in the context of certain example combinations of elements and/or functions, it should be appreciated that different combinations of elements and/or functions may be provided by alternative embodiments without departing from the scope of the disclosure and the appended claims.
This application claims the domestic priority of U.S. Provisional Application Ser. No. 62/135,980 filed on Mar. 20, 2015, claims the domestic priority of U.S. Provisional Application Ser. No. 62/221,893 filed on Sep. 22, 2015, and claims the domestic priority of U.S. Provisional Application Ser. No. 62/286,774 filed on Jan. 25, 2016.
Number | Date | Country | |
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62135980 | Mar 2015 | US | |
62221893 | Sep 2015 | US | |
62286774 | Jan 2016 | US |