HEAT SINK AND BACKLIGHT MODULE USING SAME
First Claim
1. A heat sink, comprising a first bottom plate, a first side plate formed on the first bottom plate, and a second bottom plate mounted on the first bottom plate, the first bottom plate and the first side plate being integrally formed together, the second bottom plate being fixed by screws to an end of the first bottom plate that is distant from the first side plate, the first bottom plate being made of aluminum extrusion material, the second bottom plate being made of aluminum sheet material.
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Accused Products
Abstract
The present invention provides a heat sink and a backlight module using the heat sink. The heat sink includes a first bottom plate, a first side plate formed on the first bottom plate, and a second bottom plate mounted on the first bottom plate. The first bottom plate and the first side plate are integrally formed together. The second bottom plate is fixed by screws to an end of the first bottom plate that is distant from the first side plate. The first bottom plate is made of aluminum extrusion material. The second bottom plate is made of aluminum sheet material. The bottom plate of the heat sink is formed through jointing so that a portion of the bottom plate is made of aluminum sheet material that has a small thickness to thereby reduce the amount of aluminum material used and thus facilitating cost control.
4 Citations
11 Claims
- 1. A heat sink, comprising a first bottom plate, a first side plate formed on the first bottom plate, and a second bottom plate mounted on the first bottom plate, the first bottom plate and the first side plate being integrally formed together, the second bottom plate being fixed by screws to an end of the first bottom plate that is distant from the first side plate, the first bottom plate being made of aluminum extrusion material, the second bottom plate being made of aluminum sheet material.
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6. A heat sink, comprising a first bottom plate, a first side plate formed on the first bottom plate, and a second bottom plate mounted on the first bottom plate, the first bottom plate and the first side plate being integrally formed together, the second bottom plate being fixed by screws to an end of the first bottom plate that is distant from the first side plate, the first bottom plate being made of aluminum extrusion material, the second bottom plate being made of aluminum sheet material;
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wherein the aluminum extrusion material that makes the first bottom plate is Al6063 and the aluminum sheet material that makes the second bottom plate is Al5052; wherein the first bottom plate has an outside surface that is coated with a radiation heat dissipation material, the radiation heat dissipation material comprising a thermally conductive spray coating; further comprising a heat conduction layer interposed between the first bottom plate and the second bottom plate; and wherein the heat conduction layer is made of thermal paste or thermal grease.
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- 7. A backlight module, comprising a backplane, a heat sink arranged inside the backplane, a light guide plate arranged inside the backplane, and an LED light bar mounted to the heat sink, the heat sink comprising a first bottom plate, a first side plate formed on the first bottom plate, and a second bottom plate mounted on the first bottom plate, the first bottom plate and the first side plate being integrally formed together, the second bottom plate being fixed by screws to an end of the first bottom plate that is distant from the first side plate, the first bottom plate being made of aluminum extrusion material, the second bottom plate being made of aluminum sheet material.
Specification