Elongated led lighting fixture

• US 20080037239A1
• Filed: 06/25/2007
• Published: 02/14/2008
• Est. Priority Date: 06/30/2006
• Status: Active Grant

• Current Assignee: Electraled Incorporated
• Original Assignee: Electraled Incorporated
• Inventors: Warner, Bryan, Thomas, James, Gatesman, Gary, Mosier, Jim, Lynd, David
• Granted Patent: US 8,235,539 B2
• Time in Patent Office: Days
• US Class Current: 362/92
• CPC Class Codes: F21S 4/28 rigid, e.g. LED bars
• CPC Class Codes: F21V 15/013 the housing being an extrusion
• CPC Class Codes: F21V 15/015 Devices for covering joints between adjacent lighting devices; End coverings
• CPC Class Codes: F21V 29/71 using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
• CPC Class Codes: F21V 29/76 with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21W 2131/305 for refrigerators
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: F25D 27/00 Lighting arrangements in general F21

Abstract

The invention provides an elongated lighting fixture with multiple light emitting diodes (LEDs) arrayed in two groups that are angled to each other. The fixture provides an extremely broad light emitting angle and includes an elongated housing having a pair of side walls with at least one fin to dissipate heat. Each side wall has a support member extending upward at angle from the side wall, wherein the side walls terminate at a central wall. A generally transparent cover is connected to the housing and extends between opposed ends of the housing. A first elongated fastener and a second elongated fastener are utilized to mount a first group of LEDs and a second group of LEDs to the first support member and the second support member, respectively. First and second interconnection board assemblies are affixed to respective support members beneath the group of LEDs by the first and second fasteners. When the first and second interconnection board assemblies are energized by an internal power source, current travels from each interconnection assembly through the fasteners to each group of LEDs for illumination.

Claims

1. A lighting fixture for use in refrigerator coolers or freezers, the lighting fixture comprising:

an elongated housing having a first side wall and a second side wall wherein each side wall has at least one heat dissipating fin, the housing further having a first support member angularly extending from the first side wall and a second support member angularly extending from the second side wall, wherein the side walls terminate at a central wall, and wherein the first and second side walls, the first and second support members and the central wall collectively define an internal cavity of the housing;

a first group of light modules secured to the first support member by a first elongated fastener and a second elongated fastener, each light module comprising a light emitting diode (LED) mounted on a printed circuit board;

a first interconnection board assembly affixed to an inner surface of the first support member beneath the first group of light modules by the first and second fasteners;

a second group of light modules secured to the second support member by a first elongated fastener and a second elongated fastener, each light module comprising a LED mounted on a printed circuit board;

a second interconnection board assembly affixed to an inner surface of the second support member beneath the second group of light modules by the first and second fasteners;

a power supply residing within the internal cavity and electrically connected to the first and second interconnection board assemblies; and

,

wherein when the first and second interconnection board assemblies are energized by the power supply, current travels from each interconnection assembly through the first and second fasteners to illuminate each LED of the light modules.

2. The lighting fixture of claim 1, wherein the power supply is a high-efficiency power supply that provides constant current output.

3. The lighting fixture of claim 1, wherein the printed circuit board of each group of light modules is removably secured to an outer surface of the respective support member.

4. The lighting fixture of claim 1, wherein each light module includes a first copper trace on the printed circuit board extending between the first fastener and the LED, and a second copper trace extending between the second fastener and the LED.

5. The lighting fixture of claim 1, each of the first and second interconnection board assemblies comprise a plurality of electrically interconnected printed circuit boards.

6. The lighting fixture of claim 5, wherein the first and second fasteners extend into the printed circuit boards that comprise the interconnection board assemblies.

7. The lighting fixture of claim 5, wherein the interconnection board assemblies are inserted into a channel formed adjacent the inner surface of the support member.

8. The lighting fixture of claim 1, wherein the housing includes a pair of end caps, each end cap coupled to an end of the housing by a fastener extending into the central wall of the housing.

9. The lighting fixture of claim 1, wherein the first and second support members define an internal arrangement angle that ranges between 30 and 100 degrees.

10. The lighting fixture of claim 1, wherein a longitudinal axis of one LED in the first group intersects a longitudinal axis of one LED in the second group to define an intersection angle that ranges between 150 and 180 degrees.

11. The lighting fixture of claim 1, wherein each light module further includes a zener diode associated with a LED to form bypass circuitry.

12. The lighting fixture of claim 1, further comprising a cover that extends between opposed ends of the housing, the cover having opposed tongues that are received by a recess of the housing.

13. The lighting fixture of claim 1, wherein the housing further includes a wing extending along each side wall, the horn having an inclined upper wall.

14. The lighting fixture of claim 1, further comprising a wireless module that allows for remote operation of the fixture, the wireless module comprising a transmitter, a receiver, an antenna, and a control interface for the power supply.

15. A LED lighting fixture comprising:

an elongated housing having a first side wall and a second side wall, wherein a first support member extends from the first side wall and a second support member extends from the second side wall, and wherein the firsts and second side walls converge at a central wall;

a first group of light modules secured to an outer surface of the first support member, each light module comprising a light emitting diode (LED) mounted on a printed circuit board;

a first interconnection board affixed to an inner surface of the first support member beneath the first group of light modules;

a second group of light modules secured to the second support member, each light module comprising a LED mounted on a printed circuit board;

a second interconnection board affixed to an inner surface of the second support member beneath the second group of light modules;

a power supply residing within the housing, wherein the power supply energizes the first and second interconnection boards and current travels from each interconnection board to illuminate the LED of the light modules.

16. The lighting fixture of claim 15, wherein the first group of light modules are secured to the first support member by first and second elongated fasteners, said elongated fasteners also securing the first interconnection board to the first support member.

17. The lighting fixture of claim 16, wherein current provided by the power supply flows from the interconnection bus through the first and second fasteners to the LED of the light modules.

18. The lighting fixture of claim 16 wherein each light module includes a first copper trace on the printed circuit board extending between the first fastener and the LED, and a second copper trace extending between the second fastener and the LED.

19. The lighting fixture of claim 15, wherein the first interconnection board is inserted into a channel formed adjacent the inner surface of the first support member, and wherein first and second elongated fasteners secure the first group of light modules and the first interconnection board to the first support member.

20. The lighting fixture of claim 15, wherein the first and second support members define an internal arrangement angle that ranges between 30 and 100 degrees.

21. The lighting fixture of claim 15, wherein a longitudinal axis of one LED in the first group intersects a longitudinal axis of one LED in the second group to define an intersection angle that ranges between 150 and 180 degrees.

22. The lighting fixture of claim 15, further comprising a blocking wing extending along the housing above each side wall, the horn having an inclined upper wall.

23. A lighting fixture for use in refrigerator coolers or freezers, the lighting fixture comprising:

an elongated housing having a first side wall and a second side wall, wherein a first angled support member extends from the first side wall and a second angled support member extends from the second side wall, and the housing further having a wing extending along each support member and above the side wall;

a first group of light modules secured to the first support member, each light module comprising a light emitting diode (LED) mounted on a printed circuit board;

a first interconnection board affixed to the first support member and electrically connected to the first group of light modules;

a second group of light modules secured to the second support member, each light module comprising a LED mounted on a printed circuit board;

a second interconnection board affixed to the second support member and electrically connected to the second group of light modules;

a power supply residing within the housing, wherein the power supplies current through the first and second interconnection boards to the light modules to illuminate the LEDs.

24. The lighting fixture of claim 23, wherein the wing has a depending projection and the housing includes a receiver, wherein the projections is slidingly received by the receiver to couple the wing to the housing.

25. The lighting fixture of claim 23, wherein the wing has upwardly extending inner wall and an inclined upper wall, wherein the upper wall is positioned above a lower edge of the LED.

26. The lighting fixture of claim 23, wherein the first group of light modules are secured to the first support member by first and second elongated fasteners, said elongated fasteners also securing the first interconnection board to the first support member.

27. The lighting fixture of claim 26, wherein current provided by the power supply flows from the interconnection bus through the first and second fasteners to the LED of the light modules.

28. The lighting fixture of claim 23 wherein the first and second support members converge at a central wall that includes a depending protrusion, the protrusion defining an upper segment of a channel that receives the first interconnection board.