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US 2011/0215723 A1Published application
Heat sink and light emitting diode lamp
AssigneeGe Investment Co., Ltd.
InventorWen-Kuei Tsai
Life of this patent
Estimating the term…
Abstract
A heat sink including an inner piece and an outer piece is provided. The inner piece has a side surface. The outer piece is disposed around the inner piece and has an inner side surface, wherein the side surface of the inner piece is riveted to the inner side surface of the outer piece to form an interface, and an area ratio of the interface and the side surface of the inner piece is between 0.6 and 0.95. The light emitting diode lamp using the heat sink is also provided.
Claims19
A heat sink, comprising:
- an inner piece having a side surface;
- and
- an outer piece disposed around the inner piece and having an inner side surface, wherein the side surface of the inner piece is riveted to the inner side surface of the outer piece to form an interface, and an area ratio of the interface and the side surface of the inner piece is between 0.6 and 0.95.
A light emitting diode (LED) lamp, comprising:
- a heat sink, comprises:
- an inner piece having an upper surface, a lower surface opposite to the upper surface and a side surface connected to the upper surface and the lower surface;
- and
- an outer piece disposed around the inner piece and having an inner side surface, wherein the side surface of the inner piece is riveted to the inner side surface of the outer piece to form an interface, an area ratio of the interface and the side surface of the inner piece is between 0.6 and 0.95;
- a current control circuit disposed on the inner piece of the heat sink and located in the upper surface;
- a LED light source disposed on the current control circuit and electrically connected to the current control circuit;
- and
- a connecting portion disposed on inner piece of the heat sink and located in the lower surface.
5 more elements
Dependencies are inferred from the claim text.