Heatsink for cooling at least one LED

• US 8,292,461 B2
• Filed: 02/07/2012
• Issued: 10/23/2012
• Est. Priority Date: 05/15/2009
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Ruberg, Neil, Thornton, Gerry Farrel, Walker, Justin Mathew
• Primary Examiner(s): HAN, JASON
• Application Number:
  US13/367,396
• Publication Number:
  US 20120134145A1
• Time in Patent Office: 259 Days
• Field of Search: 362/249.02, 362/294, 362/311.02, 362/545, 362/800
• US Class Current: 362/249.02
• CPC Class Codes: F21S 8/088 with lighting device mounted on top of the standard, e.g. for pedestrian zones
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21Y 2107/30 on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A heatsink for cooling at least one LED may have a longitudinally extending channel flanked on each side by a longitudinally extending column of heat fins.

Claims

1. An elongated LED panel for supporting and cooling at least one LED, said elongated LED panel comprising:

an elongated support surface supporting at least one LED;

an elongated heatsink extending rearward and away from said support surface, said heatsink having a longitudinally extending channel flanked on each side by a longitudinally extending column of heat fins having an inner at least partially arcuate face and an outer at least partially arcuate face that respectively form an inside and outside segment of a common circle;

wherein each said outer at least partially arcuate face generally faces toward said central channel; and

wherein each said inner at least partially arcuate face generally faces away from said central channel and toward a longitudinal periphery of said heatsink.

2. The elongated LED panel of claim 1, wherein at least one of said heat fins has a mirror imaged corresponding single of said heat fins on an opposite side of said channel.

3. The elongated LED panel of claim 2, wherein two of said plurality of heat fins in a single said longitudinally extending column are mirror images of one another.

4. The elongated LED panel of claim 2, wherein said inner at least partially arcuate faces of two of said plurality of said heat fins in a single said longitudinally extending column form the segment of a common circle.

5. The elongated LED panel of claim 1, wherein each said support surface has at least one recessed pocket receiving at least one LED printed circuit board.

6. The elongated LED panel of claim 5, wherein said at least one recessed pocket receiving at least one LED printed circuit board is sealed with a lens.

7. The elongated LED panel of claim 6, wherein said channel is centrally aligned on said heatsink.

8. The elongated LED panel of claim 7, wherein a longitudinally extending trough and corresponding ridge extend proximal each longitudinal edge of said heatsink.

9. An elongated LED panel for supporting and cooling at least one LED, said elongated LED panel comprising:

a front and rear surface, said front surface having an elongated support surface supporting at least one LED;

a heatsink extending rearward and away from said support surface and on said rear surface, said heatsink having a longitudinally extending channel flanked on each side by a longitudinally extending column of heat fins having an inner at least partially arcuate face and an outer at least partially arcuate face that respectively form an inside and outside segment of a common circle;

wherein each said outer at least partially arcuate face generally faces toward said central channel; and

wherein each said inner at least partially arcuate face generally faces away from said central channel and toward a longitudinal periphery of said heatsink;

said LED panel rotatably mounted on a first side to a frame top and rotatably mounted on a second side to a frame bottom, said frame top and said frame bottom affixed to a frame support base.

10. An elongated LED support panel for use in an LED post-top luminaire, comprising:

a front and rear surface of said support panel, said front surface having an elongated support surface having a plurality of recesses, each of said recesses supporting at least one LED;

wherein each of said recesses of said front surface having a lens fitted over said at least one LED;

a heatsink extending rearward and away from said rear surface of said support panel, said heatsink having a longitudinally extending channel flanked on each side by a longitudinally extending column of heat fins having an inner at least partially arcuate face and an outer at least partially arcuate face that respectively form an inside and outside segment of a common circle;

wherein each said outer at least partially arcuate face generally faces toward said central channel; and

wherein each said inner at least partially arcuate face generally faces away from said central channel and toward a longitudinal periphery of said heatsink;

said LED support panel rotatably mounted to a frame affixed to a frame support base.