Flow-through luminaire

Patent metadata

Field	Value
Publication number	US-9702539-B2
Application number	US-201414520094-A
Country	US
Kind code	B2
Filing date	Oct 21, 2014
Priority date	Oct 21, 2014
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

A housing for a luminaire is disclosed herein. The housing can include a central portion forming a substantially closed shape and having an inner area therewithin, where the central portion is thermally conductive. The central portion can include an upper end and a lower end adjacent to the upper end. The housing can also include a number of fins thermally coupled to and extending inward and outward away from the upper end of the central portion, where the plurality of fins are thermally conductive.

First claim

What is claimed is:

1. A housing for a luminaire, comprising:
a central portion forming a substantially closed shape, wherein the central portion has a first width and a first height, wherein the substantially closed shape forms an inner area therewithin, wherein the inner area is open and traverses a height of the central portion, wherein the central portion is thermally conductive, and wherein the central portion comprises:
an upper end; and
a lower end adjacent to the upper end, wherein the lower end comprises at least one light engine assembly coupling feature that is configured to couple to at least one light engine assembly; and

a plurality of fins thermally coupled to and extending inward and outward away from the upper end of the central portion, wherein the plurality of fins are thermally conductive, wherein the plurality of fins extending inward are disposed within the inner area, wherein each fin of the plurality of fins has a second width and a second height,
wherein the second width is greater than the first width, wherein the second height is greater than the first height,
wherein the central portion is positioned substantially halfway along the second width of the plurality of fins,
wherein the central portion and the plurality of fins induce natural air flow therethrough, wherein the natural air flow removes heat from the central portion and the plurality of fins without using an air moving device, wherein the natural air flow moves unimpeded through the plurality of fins within the inner area at least to the first height of the central portion, and
wherein a bottom inner end of the plurality of fins avoid contact with each other and with another component of the luminaire.

2. The housing of claim 1 , further comprising:
a bracket coupled to the central portion and traversing at least some of the inner area of the substantially closed shape when viewed from above, wherein the bracket comprises a mounting feature configured to couple the bracket to an external mounting object.

3. The housing of claim 2 , wherein the bracket further comprises a power converter coupling feature configured to couple the bracket to a power converter.

4. The housing of claim 1 , wherein the plurality of fins have a curvature.

5. The housing of claim 1 , wherein the central portion further comprises a power transfer coupling feature disposed in the upper end of the central portion.

6. The housing of claim 5 , wherein the upper end and the lower end of the central portion form a cavity, wherein the cavity is configured to receive at least one electrical conductor disposed in the power transfer coupling feature.

7. The housing of claim 1 , wherein the lower end of the central portion further comprises at least one channel disposed therein, wherein the at least one channel is configured to receive at least one sealing member.

8. The housing of claim 1 , wherein the lower end of the central portion further comprises a lens coupling feature, wherein the lens coupling feature is configured to couple to a lens.

9. A luminaire comprising:
a housing comprising:
a central portion forming a substantially closed shape, wherein the central portion has a first width and a first height, wherein the substantially closed shape forms an inner area therewithin, wherein the inner area is open and traverses a height of the central portion, wherein the central portion is thermally conductive, and wherein the central portion comprises:
an upper end; and
a lower end adjacent to the upper end, wherein the lower end comprises at least one light engine assembly coupling feature; and

a plurality of fins thermally coupled to and extending inward and outward away from the upper end of the central portion, wherein the plurality of fins are thermally conductive, wherein the plurality of fins extending inward are disposed within the inner area, wherein each fin of the plurality of fins has a second width and a second height;

at least one light engine assembly mechanically coupled to the lower end of the central portion using the at least one light engine assembly coupling feature, wherein the at least one light engine assembly comprises at least one light board and at least one light source; and
at least one electrical conductor electrically coupled to the at least one light engine assembly,
wherein the second width is greater than the first width, wherein the second height is greater than the first height,
wherein the central portion is positioned substantially halfway along the second width of the plurality of fins,
wherein the central portion and the plurality of fins induce natural air flow therethrough, wherein the natural air flow removes heat from the central portion and the plurality of fins without using an air moving device, wherein the natural air flow moves unimpeded through the plurality of fins within the inner area at least to the first height of the central portion, and
wherein a bottom inner end of the plurality of fins avoid contact with each other and with another component of the luminaire.

10. The luminaire of claim 9 , wherein the central portion further comprises:
a power transfer coupling feature disposed in the upper end of the central portion of the housing, wherein the at least one electrical conductor is coupled to the power transfer coupling feature.

11. The luminaire of claim 9 , further comprising:
at least one sealing member positioned within at least one channel disposed in the lower end of the central portion, wherein the at least one sealing member is adjacent to the at least one light engine assembly.

12. The luminaire of claim 9 , further comprising:
a lens mechanically coupled to a lens coupling feature of the central portion of the housing.

13. The luminaire of claim 9 , further comprising:
a bracket coupled to the central portion of the housing and traversing at least some of the inner area of the substantially closed shape when viewed from above, wherein the bracket comprises a mounting feature configured to couple the bracket to an external mounting object.

14. The luminaire of claim 13 , further comprising:
a power converter mechanically coupled to a power converter coupling feature of the bracket, wherein the power converter is thermally coupled to the plurality of fins, and wherein the power converter is electrically coupled to the at least one electrical conductor.

15. The luminaire of claim 14 , wherein the bracket is non-linear when viewed from a side, having a raised center portion relative to either end of the bracket, wherein the power converter is mechanically coupled to the raised center portion of the bracket.

16. The luminaire of claim 13 , further comprising:
a mounting feature disposed within the bracket, wherein the mounting feature is configured to couple to a mounting component.

17. The luminaire of claim 16 , wherein the mounting feature comprises at least one wall forming a cavity therein, wherein the at least one electrical conductor is disposed within the cavity of the mounting feature.

18. The luminaire of claim 9 , wherein the housing and the at least one light engine assembly are used in a hazardous environment.

19. The luminaire of claim 9 , wherein ambient air flows through the plurality of fins and through the inner area along the height of the central portion.

20. A housing for a luminaire, comprising:
a central portion forming a substantially closed shape, wherein the substantially closed shape forms an inner area therewithin, wherein the inner area i

Assignees

• Scarlata Andrew Francis
• Frenkel Alexander Michael
• Cooper Technologies Co

Inventors

• Scarlata Andrew Francis
• Frenkel Alexander Michael

Classifications

• F21V31/005

  Sealing arrangements therefor · CPC title

• F21V5/04

  of lens shape · CPC title

• F21V29/773 Primary

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

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21Y2103/33

  annular · CPC title