Modular LED lighting fixture
View Patent ↗A modular LED lighting fixture is provided, where the shape and brightness of light output from the fixture can be altered by changing LED modules and/or power supplies powering the modules within the fixture. The fixture can include a housing, a modular, removable LED module attached within the housing, and at least one modular, removable power supply attached to the housing for powering the LED module.
1. A modular light emitting diode (LED) fixture, comprising:
a housing,
a modular, removable LED module attached within the housing to a first mounting surface, the removable LED module including at least a first group of LEDs mounted at an angle to a bottom surface of the housing and a second group of LEDs mounted at a different angle to the bottom surface of the housing, and
at least one modular, removable LED driver attached within the housing to a second mounting surface for supplying power to the LED module;
wherein the LED module and the LED driver are removable from the first and second mounting surfaces.
2. The fixture of claim 1 , wherein the housing has a top surface, the bottom surface, and a proximal end to which a support is affixed thereto for supporting the fixture in a lighting environment, and a distal end.
3. The fixture of claim 2 , wherein the removable LED module and removable LED driver are attached to the bottom surface in side-by-side relation in a square or rectangular arrangement.
4. The fixture of claim 2 , further comprising: a plurality of spaced-apart fins extending across the top surface of the fixture for providing a heat spreading function.
5. The fixture of claim 2 , further comprising: a hinged window attached to the distal end of the fixture so as to cover the removable LED module, and a hinged protective door attached to the proximal end of the fixture so as to cover the removable LED driver, the door and window in a closed position forming an outer, bottom surface of the fixture.
6. The fixture of claim 1 , wherein the at least one LED driver is a constant current driver configured to provide between 90 and 240 volts to the LED module.
7. The fixture of claim 1 , wherein one or both of the LED module and the LED driver is configured to a roadway illumination pattern selected from the group consisting of direct illumination in two directions along the direction of the roadway, in a straight directional pattern at a cross section, in an omni-directional pattern across an intersection, at an angle to normal in two directions, or at an angle to normal in four directions.
8. The fixture of claim 1 , wherein the LED module comprises a plurality of PCB strips, each PCB strip including a plurality of serially-connected LEDs thereon.
9. The fixture of claim 8 , wherein one or more LEDs in the module or one or more strips of LEDs are configured to output different colored light.
10. The fixture of claim 8 , wherein one or more LEDs in the module or one or more strips of LEDs in the LED module are fitted with a secondary optic.
11. The fixture of claim 8 , wherein the PCB strips are embodied as flextape having a plurality of LEDs thereon, the flextape comprising one or more layers of plastic resin.
12. The fixture of claim 8 , wherein one or more strips of LEDs in the LED module are mounted on a slider bracket assembly that enables removal and replacement of a given strip in the LED module.
13. The fixture of claim 8 , further comprising a backing of thermally conductive material supporting the plurality of PCB strips with LEDs thereon and removably attachable to the bottom surface of the housing.
14. The fixture of claim 13 , wherein the backing is an aluminum plate.
15. The fixture of claim 13 , wherein the backing comprises an aluminum plate supporting the plurality of PCB strips with LEDs on a first surface, an having a second surface attached to a cell structure that is interposed between the plate second surface and the bottom surface of the housing, the plate and cell structure providing a heat spreading function for the LEDs thereon.
16. The fixture of claim 15 , wherein the cell structure comprises a plurality of hollow cells contiguously positioned in a side-by-side manner, the cells having any of a circular, oval, square, pentagonal, hexagonal, octagonal and concentric circular shape.
17. The fixture of claim 15 , wherein the cell structure includes a plurality of bores there through in at least two dimensions of the structure to promote the thermal dissipation of heat generated by the strips of LEDs thereon.
18. The fixture of claim 1 , wherein the angle is variable for one or more strips of LEDs of the LED module.
19. The fixture of claim 1 , wherein one or more strips of LEDs are set at selected angles to the bottom surface of the housing so as to produce a roadway illumination pattern selected from the group consisting of direct illumination in two directions along the direction of the roadway, in a straight directional pattern at a cross section, in an omni-directional pattern across an intersection, at an angle to normal in two directions, or at an angle to normal in four directions.
20. The fixture of claim 1 , wherein the first mounting surface comprises an area up to approximately 90 in 2 .
21. A modular light emitting diode (LED) fixture, comprising:
a housing,
a plurality of individually removable PCB strips attached within the housing to a first mounting surface, the plurality of PCB strips including at least a first strip mounted at an angle to a bottom surface of the housing and a second strip mounted at a different angle to the bottom surface of the housing, each strip having one or more LEDs thereon, and
at least one modular, removable LED driver attached within the housing to a second mounting surface for supplying power to the LEDs on the PCB strips
wherein the PCB strips and the LED driver are removable from the first and second mounting surfaces.
22. The fixture of claim 21 , wherein one or more strips of LEDs are mounted on a slider bracket and wherein the one or more strips of LEDs are removable by sliding.
23. The fixture of claim 21 , wherein a cross-sectional thickness of the fixture is 3.0 inches or less and the total light output of the fixture is at least 6,300 lumens.
24. The fixture of claim 21 , wherein the total light output of the fixture is in a range of between 6,300 to 8,100 lumens.
25. The fixture of claim 21 , wherein the plurality of strips of PCBs with LEDs thereon comprises an LED array, and the light output per square inch of the LED array is at least 70 lumens/in 2 .
26. A modular light emitting diode (LED) fixture, comprising:
a housing,
a removable array of LEDs attached within the housing to a first mounting surface, the removable array including at least a first group of LEDs mounted at an angle to a bottom surface of the housing and a second group of LEDs mounted at a different angle to the bottom surface of the housing,
at least one modular, removable LED driver attached within the housing to a second mounting surface for supplying power to the LED array, the LED array and LED driver;
wherein the array of LEDs and the LED driver are removable from the first and second mounting surfaces.
27. The fixture of claim 26 , further comprising: a plurality of heat spreading fins arranged on the housing.
28. The fixture of claim 26 , wherein one or both of the LED array and the LED driver is configured to generate a roadway illumination pattern selected from the group consisting of direct illumination in two directions along the direction of the roadway, in a straight directional pattern at a cross section, in an omni-directional pattern across an intersection, at an angle to normal in two directions, or at an angle to normal in four directions.
29. The fixture of claim 26 , wherein a cross-sectional thickness of the fixture is 3.0 inches or less and the total light output of the fixture is at least 6,300 lumens.
30. The fixture of claim 26 , wherein the total light output of the fixture is in a range of between 6,300 to 8,100 lumens.
31. The fixture of claim 26 , wherein the light output per square inch of the LED array is at least 70 lumens/in 2 .
32. A modular light emitting diode (LED) fixture, comprising:
a housing,
a modular, removable LED module attached within the housing over a first mounting surface, the removable LED module including at least a first group of LEDs mounted at an angle to a bottom surface of the housing and a second group of LEDs mounted at a different angle to the bottom surface of the housing, and
at least one modular, removable LED driver attached within the housing over a second mounting surface for supplying power to the LED module;
wherein the first and second mounting surfaces are disposed such that the LED module and the LED driver are removable from a same side of the housing.