Light module for a motor vehicle lighting device, and method for producing a light module
AssigneeHella GmbH & Co. KGaA
InventorsSebastian Bartscher, Frank Brinkmeier, Werner Koesters, Michael Lakenbrink, Thomas Wiese
Life of this patent
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Abstract
A light module for a motor vehicle lighting device, at least comprising an LED lamp, metal conductor tracks for electrically contacting the LED lamp, a carrier body on which the LED lamp and the conductor tracks are arranged, and a metal heat sink. The carrier body being form-fittingly connected to the heat sink. The carrier body comprises an electrically insulating and thermally conductive composite material.
Claims11
A light module for a motor vehicle lighting device, the light module comprising:
- an LED lamp;
- metal conductor tracks for electrical contacting the LED lamp;
- a carrier body on which the LED lamp and the conductor tracks are arranged;
- and
- a metal heat sink,
- wherein the carrier body is form-fittingly connected to the heat sink,
- wherein the carrier body comprises an electrically insulating and thermally conductive composite material, and
- wherein the composite material has a matrix of a plastic and metal, ceramic and/or graphitic fillers, wherein the fillers have a globular shape and a homogeneous distribution in the matrix.
A method for producing a light module for a motor vehicle lighting device, the method comprising:
- providing a metal heat sink;
- inserting microscale and/or nanoscale cavities into a joining surface of the heat sink;
- injection molding a carrier body from an electrically insulating and thermally conductive composite material, the composite material of the carrier body filling the cavities in the joining surface of the heat sink thereby forming a positive connection;
- applying metal conductor tracks to the carrier body;
- and
- applying at least one LED lamp.
A method for producing a light module for a motor vehicle lighting device, the method comprising:
- providing a metal heat sink;
- inserting microscale and/or nanoscale cavities into a joining surface of the heat sink;
- providing a carrier foil made of an electrically insulating and thermally conductive composite material;
- thermal direct joining of the carrier foil with the heat sink, wherein the composite material of the carrier foil fills the cavities in the joining surface of the heat sink, forming a positive connection;
- providing a carrier body;
- thermal direct joining of the carrier body with the carrier foil;
- and
- applying at least one LED lamp and metal conductor tracks to the carrier body.
Dependencies are inferred from the claim text.