Troffer-style fixture with LED strips
First Claim
Patent Images
1. A lighting fixture, comprising:
- a light engine comprising a first portion having an inner surface and one or more integral sidewalls defining a cavity and a light engine bottom rim along at least part of an outer perimeter of said one or more integral sidewalls, said bottom rim comprising an inner bottom rim perimeter and an outer bottom rim perimeter;
a reflector external to said cavity and defining a reflector top rim comprising an inner top rim perimeter and an outer top rim perimeter, said reflector substantially below said light engine bottom rim;
a lens at least partially between said light engine bottom rim and said reflector top rim, wherein said lens is at least partially outside a perimeter of said light engine first portion and said inner top rim perimeter, and wherein said lens is entirely inside said bottom rim outer perimeter and said top rim outer perimeter;
wherein a planar backside surface of the light engine is exposed and is a primary thermal dissipation surface of said light fixture such that a majority of heat generated by the light engine can pass from the exposed backside surface out of the lighting fixture; and
a junction box on a side surface of said lighting fixture.
5 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to different embodiments of lighting fixtures, such as troffers. A lens can be placed between a light engine and a reflector and secured in place by crimping portions of the light engine, reflector, or both to prevent the lens from moving. Troffers according to the present invention can lack a dedicated heat sink, instead sufficiently dissipating heat through the light engine. This can significantly reduce the weight of the troffer. Emitter panels can be directly mounted on a light engine inner surface, or on an internal reflector within the light engine.
-
Citations
27 Claims
-
1. A lighting fixture, comprising:
-
a light engine comprising a first portion having an inner surface and one or more integral sidewalls defining a cavity and a light engine bottom rim along at least part of an outer perimeter of said one or more integral sidewalls, said bottom rim comprising an inner bottom rim perimeter and an outer bottom rim perimeter; a reflector external to said cavity and defining a reflector top rim comprising an inner top rim perimeter and an outer top rim perimeter, said reflector substantially below said light engine bottom rim; a lens at least partially between said light engine bottom rim and said reflector top rim, wherein said lens is at least partially outside a perimeter of said light engine first portion and said inner top rim perimeter, and wherein said lens is entirely inside said bottom rim outer perimeter and said top rim outer perimeter; wherein a planar backside surface of the light engine is exposed and is a primary thermal dissipation surface of said light fixture such that a majority of heat generated by the light engine can pass from the exposed backside surface out of the lighting fixture; and a junction box on a side surface of said lighting fixture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
-
10. The lighting fixture of 7, wherein said connector is on an outer edge of said lens.
-
24. A method of manufacturing a lighting fixture, said method comprising:
-
providing a light engine comprising an inner surface, one or more integral sidewalls, and a first rim along part of an outer perimeter of said sidewalls, said first rim comprising an am inner first rim perimeter and an outer first rim perimeter, providing a reflector comprising a second rim having an inner second rim perimeter and an outer second rim perimeter, said reflector being external to said light engine; securing a lens between said first rim and said second rim wherein a portion of said lens is outside said inner first rim perimeter and said inner second rim perimeter and wherein said lens is entirely inside said outer first rim perimeter and said outer second rim perimeter, wherein said securing comprises bending at least one of said rims at least partially around an edge of said lens; and configuring the lighting fixture such that a planar backside surface of the light engine is exposed and is a primary thermal dissipation surface such that a majority of heat generated by the light engine can pass from the backside surface out of the lighting fixture. - View Dependent Claims (25, 26, 27)
-
Specification