MODULAR LED LIGHTING FIXTURE

• US 20080002399A1
• Filed: 03/22/2007
• Published: 01/03/2008
• Est. Priority Date: 06/29/2006
• Status: Active Grant

• Current Assignee: IDEAL Industries Lighting, LLC (Ideal Industries Incorporated)
• Original Assignee: CREE Incorporated (Wolfspeed, Inc.)
• Inventors: Perry, John, Villard, Russell George
• Granted Patent: US 8,113,687 B2
• Time in Patent Office: Days
• US Class Current: 362/184
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21S 8/086 with lighting device attached sideways of the standard, e.g. for roads and highways
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 17/107 using hinge joints
• CPC Class Codes: F21V 19/001 the light sources being semiconductors devices, e.g. LEDs
• CPC Class Codes: F21V 19/04 with provision for changing light source, e.g. turret auxiliary devices for cleaning, placing, or removing incandescent lamps H01K3/32, fluorescent lamps H01J9/006
• CPC Class Codes: F21V 23/02 the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21W 2131/105 of arenas or the like
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

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.

Claims

1. A modular light emitting diode (LED) fixture, comprising:

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.

2. The fixture of claim 1, wherein the housing has a top surface, a bottom surface, 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 power supply are attached to the bottom surface in side-by-side relation.

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 power supply, 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 power supply 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 power supply is configured to be swapped out for a replacement LED module or power supply to generate one or more of a Type I, II, III, IV or V roadway illumination pattern specified by the Illuminating Engineering Society of North America (IESNA).

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.

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, wherein one or more LEDs or one or more strips of LEDs in the LED module are mounted at an angle to the bottom surface of the housing.

14. The fixture of claim 13, wherein the angle is variable for one or more strips of LEDs of the LED module.

15. The fixture of claim 13, wherein one or more strips of LEDs are set at selected angles to the bottom surface of the housing so as to produce any of IESNA-specified Type I, Type II, Type III, Type IV and Type V roadway illumination patterns.

16. 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.

17. The fixture of claim 16, wherein the backing is an aluminum plate.

18. The fixture of claim 16, 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.

19. The fixture of claim 18, 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.

20. The fixture of claim 18, 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.

24. A modular light emitting diode (LED) fixture, comprising:

a housing,

a plurality of individually removable PCB strips attached within the housing, each strip having one or more LEDs thereon, and

at least one modular, removable power supply attached to the housing for powering the LEDs on the PCB strips.

25. The fixture of claim 24, wherein one or more strips of LEDs are mounted on a slider bracket assembly that enables removal and replacement of a given strip in the housing.

26. The fixture of claim 24, 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.

27. The fixture of claim 24, wherein the total light output of the fixture is in a range of between 6,300 to 8,100 lumens.

28. The fixture of claim 24, 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/in².

29. A modular light emitting diode (LED) fixture, comprising:

a housing,

a removable array of LEDs thereon,

at least one modular, removable power supply attached within the housing for powering the LED array, the LED array and power supply in side-by-side relation within the housing.

30. The fixture of claim 29, further comprising:

a plurality of heat spreading fins arranged on the housing.

31. The fixture of claim 29, wherein one or both of the LED array and power supply is configured to be swapped out for a replacement LED array or power supply to generate one or more of an IESNA-specified Type I, II, III, IV or V roadway illumination pattern.

32. The fixture of claim 29, 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.

33. The fixture of claim 29, wherein the total light output of the fixture is in a range of between 6,300 to 8,100 lumens.

34. The fixture of claim 29, wherein the light output per square inch of the LED array is at least 70 lumens/in².