Vehicle lamp assembly having an improved heat sink with light shield

Patent metadata

Field	Value
Publication number	US-10544915-B2
Application number	US-201715498649-A
Country	US
Kind code	B2
Filing date	Apr 27, 2017
Priority date	Apr 27, 2017
Publication date	Jan 28, 2020
Grant date	Jan 28, 2020

Abstract

A heat sink for use in a lamp assembly comprising a body having a first portion that lies in a first imaginary plane and that is adapted to receive at least one light source for emitting light rays and a shield that extends from the first portion. The shield blocks at least a portion of the light rays to facilitate reducing or eliminating glare or back dazzle. The shield is integrally or monolithically formed in the body and lies in a second imaginary plane that is generally orthogonal to the first imaginary plane.

First claim

What is claimed is:

1. A heat sink for use in a lamp assembly, said heat sink comprising a unified body having:
a first portion that lies in a first plane and that is adapted to receive and support at least one light source for emitting light rays;
a second portion that lies in a second plane generally orthogonal to said first plane extends in a first direction from said first portion, and is configured to be attached to a housing of the lamp assembly, and
a third portion that lies in a third plane generally orthogonal to said first plane and generally parallel to said second plane and extends in said first direction from said first portion, said third portion configured as a shield to block at least a first portion of said light rays directed out of the lamp assembly and configured to not block a second portion of said light rays directed towards reflective surfaces of the lamp assembly.

2. The heat sink as according to claim 1 , wherein said third portion is configured to block light rays projected towards non-optical surfaces of said lamp assembly.

3. A heat sink for use in a lamp assembly, said heat sink compromising a unified body having:
a first portion that lies in a first plane and that is adapted to receive and support at least one light source emitting light rays;
a second portion that lies in a second plane generally orthogonal to said first plane, extends in a first direction from said first portion, and is configured to be attached to a housing of the lamp assembly, and
a third portion that lies in a third plane generally orthogonal to said first plane and generally parallel to a said second plane and extends in said first direction from said first portion, said third portion configured as a shield to block at least a portion of said light rays, wherein
said lamp assembly has reflective surfaces; and
said third portion is configured to block light rays projected away from said reflective surfaces.

4. The heat sink according to claim 3 , wherein
said third portion is configured to block lights rays projected away from said reflective surfaces and out of the lamp assembly.

5. The heat sink according to claim 1 , wherein said second portion extends in said first direction a first distance, said third portion extends in said first direction a second distance, and said first distance is greater than said second distance.

6. The heat sink according to claim 1 , compromising a heat sink form, wherein said third portion comprises a section of said heat sink form bent to extend in said first direction.

7. The heat sink according to claim 6 wherein said first portion comprises tab portions each extending in a plane generally orthogonal to said first plane and extending in a second direction generally opposite to said first direction.

8. The heat sink according to claim 7 , wherein each of said tab portions comprises a section of said heat sink form bent to extend in said second direction.

9. A heat sink for use in a lamp assembly, said heat sink comprising a unified body having:
a first portion that lies in a first plane and that is adapted to receive and support at least one light source for emitting light rays;
a second portion that lies in a second plane generally orthogonal to said first plane, extends in a first direction from said first portion, and is configured to be attached to a housing of the lamp assembly, and
a third portion that lies in a third plane generally orthogonal to said first plane and generally parallel to a said second plane and extends in said first direction from said first portion, wherein
said lamp assembly has reflective surfaces,
said third portion is configured tp receive at least a portion of said light rays being projected away from the reflective surfaces, and
said third portion has a surface receiving the portion of light rays configured to direct received light rays towards the reflective surfaces.

10. The heat sink according to claim 9 , wherein the third portion has an edge having one of a curved, stepped and asymmetrical shape.

11. The new heat sink according to claim 1 , wherein the third portion has an edge having one of a curved, stepped and asymmetrical shape.

12. The heat sink according the claim 3 , wherein the third portion has an edge having one of a curved, stepped an asymmetrical shape.

Assignees

• Valeo North America Inc

Inventors

• Hutchinson Wilfried
• Warner Gavin Francis
• Blandin Jonathan

Classifications

• F21W2107/10

  for land vehicles · CPC title

• F21S41/141

  Light emitting diodes [LED] · CPC title

• F21W2102/13

  for high-beam region or low-beam region · CPC title

• F21S41/43 Primary

  characterised by the shape thereof · CPC title

• F21S45/47 Primary

  Passive cooling, e.g. using fins, thermal conductive elements or openings · CPC title