Method and Apparatus Pertaining to Heat Sinking a Light Fixture Light-Emitting Diode

• US 20110051418A1
• Filed: 08/25/2009
• Published: 03/03/2011
• Est. Priority Date: 08/25/2009
• Status: Abandoned Application

• Current Assignee: Heathco LLC (Transom Capital Group)
• Original Assignee: Heathco LLC (Transom Capital Group)
• Inventors: Sibalich, Gregory L.
• Application Number:
  US12/546,935
• Publication Number:
  US 20110051418A1
• Time in Patent Office: Days
• US Class Current: 362/249.02
• CPC Class Codes: F21S 8/024 intended to be recessed in a wall or like vertical structure, e.g. building facade
• CPC Class Codes: F21V 29/767 the planes containing the fins or blades having directions perpendicular to the light emitting axis
• CPC Class Codes: F21V 29/80 with pins or wires
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A wall-mounted light fixture comprises an LED-mounting surface having one or more LED'"'"'s mounted thereon to serve as a primary source of illumination for the wall-mounted light fixture. This wall-mounted light fixture also generally comprises a house that contains the one or more LED'"'"'s. This housing also comprises, on a side that is directly thermally coupled to the LED(s) and that is oriented towards and disposed closest to the aforementioned vertical wall (when the wall-mounted light fixture is properly mounted on the vertical wall), a heat sink. This heat sink is thermally coupled to the LED-mounting surface and has an exterior portion shaped to have a large surface area to thereby substantially increase a heat-exchange capacity of the heat sink.

Claims

1. A wall-mounted light fixture configured to be mounted on a vertical wall, comprising:

a light-emitting diode (LED)-mounting surface;

at least one LED that is mounted on the LED-mounting surface and that serves as a primary source of illumination;

a housing that contains the at least one LED, wherein the housing comprises, on a side that is directly thermally coupled to the at least one LED and that is oriented towards and disposed closest to the vertical wall when the wall-mounted light fixture is properly mounted on the vertical wall, a heat sink that is thermally coupled to the LED-mounting surface and that has an exterior portion shaped to have a large surface area to thereby substantially increase a heat-exchange capacity of the heat sink, such that the heat sink dissipates heat exuded by the at least one LED.

2. The wall-mounted light fixture of claim 1 wherein the at least one LED comprises a plurality of LED'"'"'s that collectively serve as the primary source of illumination.

3. The wall-mounted light fixture of claim 1 wherein the at least one LED is mounted directly opposite the side.

4. The wall-mounted light fixture of claim 1 wherein the at least one LED is mounted on a portion of the heat sink that extends perpendicularly to the side.

5. The wall-mounted light fixture of claim 1 wherein the heat sink is comprised of aluminum.

6. The wall-mounted light fixture of claim 1 wherein the housing comprises a plurality of side panels and the heat sink comprises one of the plurality of side panels.

7. The wall-mounted light fixture of claim 6 wherein at least some of the plurality of side panels comprise at least substantially transparent panels.

8. The wall-mounted light fixture of claim 1 wherein the exterior portion that is shaped to have a large surface area comprises a plurality of fins.

9. The wall-mounted light fixture of claim 8 wherein the plurality of fins are oriented at least substantially parallel to a vertical axis of the housing.

10. The wall-mounted light fixture of claim 1 wherein the exterior portion that is shaped to have a large surface area comprises a plurality of pins.

11. The wall-mounted light fixture of claim 1 wherein the LED-mounting surface and the heat sink comprise an integral structure.

12. The wall-mounted light fixture of claim 1 wherein the LED-mounting surface and the heat sink comprise separate structures that are thermally and mechanically connected to one another.

13. A method comprising:

providing a heat sink having a portion that is shaped to have a large heat-exchanging surface area;

forming a light-fixture housing that is configured to be mounted to a vertical wall, wherein the heat sink comprises, at least in substantial part, a side panel of the light-fixture housing and wherein the portion of the heat sink that is shaped to have a large heat-exchanging surface area is oriented outwardly on an exterior portion of the light-fixture housing;

thermally connecting at least one light-emitting diode (LED) to the heat sink.

14. The method of claim 13 wherein thermally connecting the at least one LED to the heat sink comprises thermally connecting the at least one LED to the heat sink opposite the portion of the heat sink that is shaped to have the large heat-exchanging surface area.

15. The method of claim 13 wherein thermally connecting the at least one LED to the heat sink comprises thermally connecting the at least one LED to an integral portion of the heat sink that is perpendicular to the portion of the heat sink that is shaped to have the large heat-exchanging surface area.

16. The method of claim 15 wherein providing a heat sink comprises providing a heat sink having an L-shaped side profile.

17. The method of claim 13 wherein thermally connecting at least one LED to the heat sink comprises mounting the at least one LED to an LED-mounting surface that is physically discrete from the heat sink and thermally and mechanically connecting the LED-mounting surface to the heat sink.

18. The method of claim 13 wherein providing a heat sink having a portion that is shaped to have a large heat-exchanging surface area comprises providing a heat sink having a plurality of heat-exchanging fins.

19. The method of claim 18 wherein the plurality of heat-exchanging fins are oriented at least substantially parallel to a vertical axis of the light-fixture housing.

20. The method of claim 13 wherein providing a heat sink having a portion that is shaped to have a large heat-exchanging surface area comprises providing a heat sink having a plurality of heat-exchanging pins.