Arrangement of a heat sink and heat-generating electronic components housed thereon

Patent metadata

Field	Value
Publication number	US-9470410-B2
Application number	US-201314104115-A
Country	US
Kind code	B2
Filing date	Dec 12, 2013
Priority date	Dec 14, 2012
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

An arrangement of a heat sink and a heat-generating electronic component is provided. The heat sink has a main part and a moulding of plastic. The electronic component is mounted on a first surface of the main part with thermal contact to the main part. The moulding is mounted to a second surface of the main part, opposite the first surface, to provide structural strength to the arrangement. The moulding has a void provided through the moulding. As a result, once the moulding and the main part are mounted to each other, a portion of the second surface of the main part is exposed through the void.

First claim

What is claimed is:

1. An arrangement comprising a heat sink and a heat-generating electronic component mounted to the heat sink,
wherein the heat sink comprises a main part and a moulding of plastic;
wherein the main part comprises a first surface and an opposite second surface;
wherein the electronic component is mounted to the first surface to allow heat generated by the electronic component to dissipate through the main part;
wherein the moulding comprises a first fitting interface and the main part comprises a second fitting interface provided on the second surface of the main part, wherein the moulding is mounted to the main part through engagement of the first fitting interface and the second fitting interface to provide structural strength to the arrangement; and
wherein the moulding comprises at least one void provided through the moulding, such that at least a portion of the second surface of the main part is exposed through the void after the moulding and the main part are mounted to each other,
wherein the first fitting interface comprises a first perforation and the second fitting interface comprises a second perforation and wherein a fastener is provided to extend through the first perforation and the second perforation to engage the first fitting interface and the second fitting interface.

2. The arrangement according to claim 1 , wherein the main part has a thermal conductivity of more than 10 W/(m·K).

3. The arrangement according to claim 1 , wherein the main part has a thermal conductivity of more than 100 W/(m·K).

4. The arrangement according to claim 1 , wherein the main part has a thermal conductivity of more than 200 W/(m·K).

5. The arrangement according to claim 1 , wherein the main part comprises at least one metal part.

6. The arrangement according to claim 5 , wherein the metal part comprises at least one of a sheet, an extruded section and a die casting.

7. The arrangement according to claim 5 , wherein the metal part is produced from aluminium.

8. The arrangement according to claim 1 , wherein the at least one electronic component is provided on a board, which is fitted on the first surface of the main part.

9. The arrangement according to claim 1 , wherein the at least one electronic component comprises light-emitting diodes.

10. The arrangement according to claim 1 , wherein the second fitting interface of the main part comprises two fitting interfaces.

11. The arrangement according to claim 1 , wherein the first fitting interface comprises snap hooks.

12. The arrangement according to claim 1 , wherein the main part has two opposite edges and wherein the moulding surrounds the two opposite edges of the main part.

13. The arrangement according to claim 1 , wherein the moulding comprises a thermoplastic polymer.

14. The arrangement according to claim 13 , wherein said thermoplastic polymer is a liquid crystal polymer.

15. An LED light comprising the arrangement according to claim 1 , wherein the first surface of the heat sink is fitted with a board equipped with light-emitting diodes.

16. The LED light according to claim 15 , wherein the board is fastened to the heat sink with self-tapping screws.

17. An LED light comprising an arrangement, said arrangement comprising a heat sink and a heat-generating electronic component mounted to the heat sink,
wherein the heat sink comprises a main part and a moulding of plastic;
wherein the main part comprises a first surface and an opposite second surface;
wherein the electronic component is mounted to the first surface to allow heat generated by the electronic component to dissipate through the main part;
wherein the moulding comprises a first fitting interface and the main part comprises a second fitting interface provided on the second surface of the main part, wherein the moulding is mounted to the main part through engagement of the first fitting interface and the second fitting interface to provide structural strength to the arrangement;
wherein the moulding comprises at least one void provided through the moulding, such that at least a portion of the second surface of the main part is exposed through the void after the moulding and the main part are mounted to each other;
wherein the first surface of the heat sink is fitted with a board equipped with light-emitting diodes; and
wherein the board is fastened to the heat sink with self-tapping screws.

Assignees

• Diehl Aerospace Gmbh

Inventors

• Hartmann Matthias
• Wolff Uwe
• Sicker Sebastian

Classifications

• F21V19/0055

  by screwing · CPC title

• F21V29/87

  Organic material, e.g. filled polymer composites; Thermo-conductive additives or coatings therefor · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21V29/85 Primary

  characterised by the material (liquid coolants F21V29/56) · CPC title

• F21V29/74

  with fins or blades · CPC title