Elevated light source cavity

• US 10,571,110 B2
• Filed: 04/24/2017
• Issued: 02/25/2020
• Est. Priority Date: 08/27/2013
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Inventors: Winters, Philip Dean
• Primary Examiner(s): Mai, Anh T
• Assistant Examiner(s): Lee, Nathaniel J
• Application Number:
  US15/495,708
• Publication Number:
  US 20170227205A1
• Time in Patent Office: 1,037 Days
• 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 23/001 the elements being electrical wires or cables
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21W 2131/10 Outdoor lighting
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A heat sink for an outdoor lighting fixture includes a top portion and a skirt portion. The skirt portion extends down from an outer perimeter of the top portion. The top portion includes an elevated portion and a transition portion surrounding the elevated portion. The elevated portion and the transition portion define a cavity. The top portion further includes a planar portion surrounding the transition portion. The elevated portion is elevated above the planar portion.

Claims

1. A heat sink for an outdoor lighting fixture, the heat sink comprising:

a top portion; and

a skirt portion extending down from an outer perimeter of the top portion, the top portion comprising;

a first elevated portion;

a first transition portion surrounding the first elevated portion and extending down from the first elevated portion, wherein the first elevated portion and the first transition portion define a cavity, wherein the first elevated portion includes a first fastener hole for attaching a light source to the first elevated portion within the cavity on an underside of the heat sink, and wherein the first elevated portion includes a second fastener hole for attaching a lens to the first elevated portion on the underside of the heat sink;

a planar portion surrounding the first transition portion, wherein the first transition portion protrudes up from the planar portion, wherein the first elevated portion is elevated above the planar portion, and wherein the skirt portion curves down from the planar portion; and

a second elevated portion surrounded by a second transition portion that extends down from the second elevated portion and protrudes up from the planar portion, wherein the planar portion surrounds the second transition portion, wherein the second elevated portion is elevated above the planar portion, and wherein the first elevated portion, the first transition portion, and the planar portion are formed in a single structure.

2. The heat sink of claim 1, wherein the second elevated portion and the second transition portion define a second cavity.

3. The heat sink of claim 1, wherein the second elevated portion and the second transition portion are formed in the single structure.

4. The heat sink of claim 1, wherein the second elevated portion includes a third fastener hole for attaching a second lens to the second elevated portion on the underside of the heat sink.

5. The heat sink of claim 4, wherein the second elevated portion includes a fourth fastener hole for attaching a second light source to the second elevated portion on the underside of the heat sink.

6. The heat sink of claim 5, wherein the first elevated portion includes a wire hole for extending an electrical wire therethrough.

7. The heat sink of claim 1, wherein the top portion includes an attachment hole for attaching the heat sink to a housing from above or below the housing.

8. An outdoor lighting structure, comprising:

a housing; and

a heat sink attached to the housing, the heat sink comprising a top portion and a skirt portion extending down from the top portion, wherein the heat sink is disposed below the housing and wherein the top portion comprises;

a first elevated portion;

a first transition portion surrounding the first elevated portion and extending down from the first elevated portion, wherein the first elevated portion and the first transition portion define a cavity;

a planar portion surrounding the first transition portion, wherein the first transition portion protrudes up from the planar portion, wherein the first elevated portion is elevated above the planar portion, wherein the planar portion is substantially planar, and wherein the skirt portion curves down from the planar portion; and

a second elevated portion surrounded by a second transition portion that extends down from the second elevated portion and protrudes up from the planar portion, wherein the planar portion surrounds the second transition portion, wherein the second elevated portion is elevated above the planar portion, and wherein the first elevated portion, the first transition portion, and the planar portion are formed in a single structure.

9. The outdoor lighting structure of claim 8, further comprising a light source attached to the first elevated portion and positioned within the cavity.

10. The outdoor lighting structure of claim 9, further comprising a lens attached to the first elevated portion, wherein the lens covers the light source on an underside of the heat sink.

11. The outdoor lighting structure of claim 9, wherein the first elevated portion includes a wire hole for extending an electrical wire therethrough from the housing to the light source.

12. The outdoor lighting structure of claim 8, wherein the second elevated portion and the second transition portion define a second cavity.

13. The outdoor lighting structure of claim 12, further comprising a lens attached to the second elevated portion, wherein the lens covers a light source that is attached to the second elevated portion within the second cavity.

14. The outdoor lighting structure of claim 13, wherein the second elevated portion includes a wire hole for extending an electrical wire therethrough from the housing to the light source.

15. The outdoor lighting structure of claim 8, wherein the second elevated portion and the second transition portion are formed in the single structure.

16. The outdoor lighting structure of claim 8, wherein the housing covers the first elevated portion on a top side of the housing.

17. An outdoor lighting fixture, comprising:

a housing;

a heat sink attached to the housing, the heat sink comprising a top portion and a skirt portion extending down from the top portion, wherein the heat sink is disposed below the housing and wherein the top portion comprises;

a first elevated portion;

a first transition portion surrounding the first elevated portion and extending down from the first elevated portion, wherein the first elevated portion and the first transition portion define a first cavity;

a planar portion surrounding the first transition portion, wherein the first transition portion protrudes up from the planar portion, wherein the first elevated portion is elevated above the planar portion, and wherein the skirt portion curves down from the planar portion; and

a second elevated portion surrounded by a second transition portion that extends down from the second elevated portion and protrudes up from the planar portion, wherein the second elevated portion and the second transition portion define a second cavity, wherein the planar portion surrounds the second transition portion, wherein the second elevated portion is elevated above the planar portion, and wherein the first elevated portion, the first transition portion, and the planar portion are formed in a single structure; and

a first light source attached to the first elevated portion and positioned within the first cavity; and

a second light source attached to the second elevated portion and positioned within the second cavity.

18. The outdoor lighting fixture of claim 17, wherein a first lens covers the first light source on an underside of the heat sink and wherein a second lens covers the second light source on the underside of the heat sink.

19. The outdoor lighting fixture of claim 18, wherein the housing covers the first elevated portion and the first transition portion on a top side of the housing.