Light fixture including heat sink for supporting lighting module

Patent metadata

Field	Value
Publication number	US-12553598-B2
Application number	US-202318723416-A
Country	US
Kind code	B2
Filing date	Jan 9, 2023
Priority date	Jan 8, 2022
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

A light fixture includes a lighting module and a heat sink. The lighting module includes a plurality of light emitting diodes and a heat sink. The light emitting diodes are configured to project light onto an area beneath the light fixture. The heat sink overlies the lighting module and is configured to dissipate heat away from the lighting module. The heat sink includes a base plate, a first base fin and a second base fin. The first base fin extends upwardly from the base plate. The second base fin extends upwardly from the base plate and is spaced from the first base fin.

First claim

What is claimed is:

1 . A light fixture comprising:
a lighting module comprising a plurality of light emitting diodes that are configured to project light onto an area beneath the light fixture; and a heat sink overlying the lighting module and configured to dissipate heat away from the lighting module, the heat sink comprising:
a base plate;
a first base fin extending upwardly from the base plate;
a second base fin extending upwardly from the base plate and spaced from the first base fin;
a first supplemental fin extending laterally from the first base fin towards the second base fin; and
a second supplemental fin extending laterally from the second base fin towards the first base fin and spaced from the first supplemental fin, wherein each of the first supplemental fin and the second supplemental fin extend upwardly from the base plate.

2 . The light fixture of claim 1 wherein:
the first base fin has a first height at the first supplemental fin;
the second base fin has a second height at the second supplemental fin;
the first supplemental fin has a third height that is less than the first height; and
the second supplemental fin has a fourth height that is less than the second height.

3 . The light fixture of claim 2 wherein a ratio of the third height to the first height and of the fourth height to the second height is about 1:3.

4 . The light fixture of claim 1 wherein:
the first supplemental fin has a first width;
the second supplemental fin has a second width; and
the first supplemental fin and the second supplemental fin can be spaced from each other by a third width that is greater than each of the first width and the second width.

5 . The light fixture of claim 1 wherein:
the base plate includes an upper surface that extends between the first base fin and the second base fin;
the upper surface, the first base fin, and the second base fin cooperate to define a channel; and
the first supplemental fin and the second supplemental fin extend into the channel.

6 . The light fixture of claim 5 wherein the upper surface slopes downwardly towards an outer perimeter of the heat sink.

7 . The light fixture of claim 1 wherein the heat sink is formed of a unitary one-piece construction.

8 . A light fixture comprising:
a lighting module comprising a plurality of light emitting diodes that are configured to project light onto an area beneath the light fixture; a heat sink overlying the lighting module and configured to dissipate heat away from the lighting module, the heat sink comprising:
a base plate; and
a plurality of base fins extending upwardly from the base plate, each base fin of the plurality of base fins being interposed between and spaced from each other; and
a driver housing overlying the heat sink and configured to house a driver, the driver housing comprising:
a lid;
a base; and
a plurality of lower fins configured to dissipate heat away from the driver, the plurality of lower fins extending downwardly from the base and towards the base plate, wherein each lower fin of the plurality of lower fins is interposed between and spaced from a pair of base fins of the plurality of base fins such that the plurality of the lower fins and the plurality of base fins are intersected by an imaginary plane.

9 . The light fixture of claim 8 wherein:
each base fin of the plurality of base fins comprises a central portion and an outer portion that extends laterally from the central portion towards one side of the heat sink;
the outer portion is shorter than the central portion; and
the outer portions and the central portions of the plurality of base fins cooperate to define a contoured groove on one side of the heat sink for accommodating the driver housing.

10 . The light fixture of claim 8 wherein the heat sink is formed of a unitary one-piece construction.

11 . A light fixture comprising:
a lighting module comprising a plurality of light emitting diodes that are configured to project light onto an area beneath the light fixture; and a heat sink overlying the lighting module and configured to dissipate heat away from the lighting module, the heat sink comprising:
a base plate;
a first base fin extending upwardly from the base plate;
a second base fin extending upwardly from the base plate and spaced from the first base fin;
a first supplemental fin extending from the first base fin towards the second base fin; and
a second supplemental fin extending from the second base fin towards the first base fin and spaced from the first supplemental fin;
a driver housing overlying the heat sink and comprising:
a lid;
a base; and
a lower fin extending downwardly from the base and towards the base plate, wherein the lower fin is interposed between and spaced from the first base fin and the second base fin such that the lower fin, the first base fin and the second base fin are intersected by an imaginary plane.

12 . The light fixture of claim 11 wherein each of the first supplemental fin and the second supplemental fin extend upwardly from the base plate.

13 . The light fixture of claim 11 wherein the first supplemental fin extends orthogonally from the first base fin and the second supplemental fin extends orthogonally from the second base fin.

14 . The light fixture of claim 11 wherein:
the first base fin has a first height at the first supplemental fin;
the second base fin has a second height at the second supplemental fin;
the first supplemental fin has a third height that is less than the first height; and
the second supplemental fin has a fourth height that is less than the second height.

15 . The light fixture of claim 14 wherein a ratio of the third height to the first height and of the fourth height to the second height is about 1:3.

16 . The light fixture of claim 11 wherein:
the first supplemental fin has a first width;
the second supplemental fin has a second width; and
the first supplemental fin and the second supplemental fin can be spaced from each other by a third width that is greater than each of the first width and the second width.

17 . The light fixture of claim 11 wherein:
the base plate includes an upper surface that extends between the first base fin and the second base fin; and
the upper surface slopes downwardly towards an outer perimeter of the heat sink.

18 . The light fixture of claim 11 wherein:
each base fin of the plurality of base fins comprises a central portion and an outer portion that extends laterally from the central portion towards one side of the heat sink;
the outer portion is shorter than the central portion; and
the outer portions and the central portions of the plurality of base fins cooperate to define a contoured groove on one side of the heat sink for accommodating the driver housing.

19 . The light fixture of claim 11 wherein the heat sink is formed of a unitary one-piece construction.

Assignees

• Hgci Inc
• Hgci Llc

Inventors

• Cai Dengke

Classifications

• F21V29/74

  with fins or blades · CPC title

• F21V23/008

  the casing being outside the housing of the lighting device · CPC title

• F21Y2105/10

  comprising a two-dimensional [2D] array of point-like light-generating elements · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21V29/763

  the planes containing the fins or blades having the direction of the light emitting axis · CPC title