Folded heat sink with electrical connection protection

• US 10,641,473 B2
• Filed: 03/30/2017
• Issued: 05/05/2020
• Est. Priority Date: 03/30/2017
• Status: Active Grant

• Current Assignee: Valeo North America Incorporated (Valeo SE)
• Original Assignee: Valeo North America Incorporated (Valeo SE)
• Inventors: Roth, Frederick Allen, Hemon, Julien
• Primary Examiner(s): Carter, William J
• Assistant Examiner(s): Rojas Cadima, Omar
• Application Number:
  US15/474,409
• Publication Number:
  US 20180283665A1
• Time in Patent Office: 1,132 Days
• Field of Search: 362235, 36224901, 362294, 362310, 362373, 362374, 362375, 362376
• CPC Class Codes: F21S 41/141 Light emitting diodes [LED]
• CPC Class Codes: F21S 41/192 Details of lamp holders, terminals or connectors
• CPC Class Codes: F21S 41/24 Light guides
• CPC Class Codes: F21S 41/29 Attachment thereof for achieving variable light distribution F21S41/63
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/195 Details of lamp holders, terminals or connectors
• CPC Class Codes: F21S 43/237 rod-shaped
• CPC Class Codes: F21S 43/27 Attachment thereof
• CPC Class Codes: F21S 45/47 Passive cooling, e.g. using fins, thermal conductive elements or openings
• CPC Class Codes: F21V 19/0015 Fastening arrangements intended to retain light sources
• CPC Class Codes: F21V 23/002 Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting module having a heat sink and at least one light source supported by the heat sink. A printed circuit board is also supported on the heat sink and electrically coupled to the at least one light source with at least one conductor. The heat sink is folded or formed to define a conductor protector for protecting the at least one conductor and has at least one wall that is situated in operative relationship with the at least one conductor in order to shield or protect the at least one conductor.

Claims

1. A lighting module of a vehicle comprising:

a heat sink;

at least one light source mounted on a landing supported by said heat sink; and

a printed circuit board mounted on a circuit board support surface supported on said heat sink and electrically coupled to said at least one light source with at least one conductor,

wherein said heat sink includes a conductor protector for protecting said at least one conductor,

wherein said heat sink is monolithic and includes

a planar portion, a top surface of the planar portion supporting said landing and said circuit board support surface,

first and second walls respectively provided on first and second sides of said planar portion, said first and second walls defining said conductor protector, free ends of said first and second walls being higher than said top surface of said planar portion, and

third and fourth walls respectively provided on third and fourth sides of said planar portion, said third and fourth sides connecting the first and second sides of said planar portion,

wherein said at least one light source, said printed circuit board, and said at least one conductor are disposed on the top surface of the planar portion adjacent each other in a lengthwise direction between said first and second walls, and the at least one light source, said printed circuit board, and said at least one conductor are entirely disposed between said first and second walls in the lengthwise direction,

wherein free ends of said third and fourth walls are lower than said top surface of said planar portion,

wherein the free ends of the third and fourth walls are continuous in the lengthwise direction opposite the at least one light source, said printed circuit board, and said at least one conductor, and

wherein the lighting module further comprises a light guide for mounting on said heat sink in operative relationship with said at least one light source, the light guide including a generally cylindrical light guide body coupled to a mounting body which mounts the light guide onto the heat sink such that an input surface of said light guide is registered with respect to said at least one light source.

2. The lighting module as recited in claim 1, wherein each of said first and second walls includes an aperture adapted to receive at least a portion of a flexible arm of a cover when the cover is mounted on the heat sink.

3. The lighting module as recited in claim 1, wherein the planar portion includes two apertures which receive two posts of the mounting body coupled to the light body, the two apertures being disposed on either side of the landing, and

wherein the third and fourth walls each includes a cut out at a location of the two apertures in the lengthwise direction between the first and second walls.

4. A method of manufacturing a lighting module of a vehicle comprising:

providing a heat sink, the heat sink being a monolithic planar sheet;

folding the heat sink such that the heat sink presents a planar portion and first and second walls respectively provided on first and second sides of said planar portion, free ends of said first and second walls being higher than a top surface of said planar portion;

folding the heat sink such that the heat sink presents third and fourth walls respectively provided on third and fourth sides of said planar portion, said third and fourth sides connecting the first and second sides of said planar portion, free ends of said third and fourth walls being lower than said top surface of said planar portion;

providing a landing on said top surface of said planar portion;

said landing is being supported by said heatsink;

mounting at least one light source on said mounting;

providing a circuit board support surface on said top surface of said planar portion;

mounting a printed circuit board on said circuit board support surface;

electrically coupling said printed circuit board to said at least one light source with at least one conductor; and

mounting a light guide on said heat sink in operative relationship with said at least one light source, the light guide including a generally cylindrical light guide body coupled to a mounting body which mounts the light guide onto the heat sink such that an input surface of said light guide is registered with respect to said at least one light source,

wherein said at least one light source, said printed circuit board, and said at least one conductor are disposed on the top surface of the planar portion adjacent each other in a lengthwise direction between said first and second walls, and the at least one light source, said printed circuit board, and said at least one conductor are entirely disposed between said first and second walls in the lengthwise direction, and

wherein the free ends of the third and fourth walls are continuous in the lengthwise direction opposite the at least one light source, said printed circuit board, and said at least one conductor.