Multi-functional heat sink

• US 9,677,751 B2
• Filed: 08/27/2014
• Issued: 06/13/2017
• Est. Priority Date: 08/27/2013
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Inventors: Winters, Philip Dean, Ladewig, Christopher
• Primary Examiner(s): HAN, JASON
• Application Number:
  US14/470,824
• Publication Number:
  US 20150062911A1
• Time in Patent Office: 1,021 Days
• Field of Search: 36224902, 36231102, 362373-375, 362431
• CPC Class Codes: F21V 11/16 using sheets without apertures, e.g. fixed
• CPC Class Codes: F21V 29/502 characterised by the adaptation for cooling of specific components
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A multi-functional heat sink includes a top portion and a skirt portion extending down from the top portion. When a light source is attached to the top portion on an underside of the multi-functional heat sink, the skirt portion reduces risk of rain water from reaching the light source and prevents light emitted by the light source from exiting the multi-functional heat sink in an upward direction. The multi-functional heat sink is made from sheet metal.

Claims

1. An outdoor lighting fixture, comprising:

a housing having a front section and a back section;

a light source; and

a multi-functional heat sink that is a single piece structure made from sheet metal, the multi-functional heat sink comprising;

a top portion, wherein the housing is attached to the top portion, wherein the front section of the housing is positioned on a top side of the multi-functional heat sink and covers a first section of the top portion, wherein a second section of the top portion is outside of the housing, and wherein the light source is attached to the top portion at the first section of the top portion on the underside of the multi-functional heat sink; and

a skirt portion extending down from the top portion, wherein the skirt portion reduces risk of rain water reaching the light source and prevents light emitted by the light source from exiting the lighting fixture in an upward direction and wherein a lower edge of the skirt portion is offset horizontally away from the top portion.

2. The outdoor lighting fixture of claim 1, wherein the skirt portion curves down from the top portion.

3. The outdoor lighting fixture of claim 1, wherein an exposed section of the top portion includes sections of the top portion on two longitudinal sides of the housing.

4. The outdoor lighting fixture of claim 1, wherein the multi-functional heat sink is removable from the housing to provide access to an area of the housing that is behind the multi-functional heat sink.

5. The outdoor lighting fixture of claim 1, further comprising a lens attached to the top portion on the underside of the multi-functional heat sink, wherein the lens covers the light source.

6. The outdoor lighting fixture of claim 5, wherein the skirt portion extends around a perimeter of the top portion to a plane that is below the lens to prevent light from the light source from exiting the lighting fixture in a horizontal and upward direction.

7. The outdoor lighting fixture of claim 1, wherein the back section includes a compartment for holding a driver that provides power to the light source.

8. The outdoor lighting fixture of claim 7, wherein the back section of the housing extends beyond the heat sink.