Heat sink for cooling a heat producing element and application
First Claim
1. A heat sink for cooling a heat producing element, comprising:
- a heat sink body having a center including a base mounted on the heat producing element, wherein the base has a plurality of fins protruding from a surface thereof; and
a fan assembly installed in an internal space of the heat sink body, wherein a rotating shaft of the fan assembly is disposed offset from the center of the heat sink body as viewed from a direction parallel to extensions of the fins from the base and parallel to the axis of the rotating shaft, and wherein the fan assembly is surrounded by the plurality of fins around a periphery of the fan assembly, and wherein the axis of the shaft is parallel to the direction that the fins extend from the base.
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Abstract
A heat sink mounted on a heat producing element for cooling the heat producing element attached on the printed board of the electronic apparatus, having a heat sink body made of a good heat conductive material and a fan assembly installed inside the heat sink body. The heat sink body is efficiently air-cooled by a cooling air generated by the rotation of the fan assembly. The cooling air forcibly cools a base and a fixing wall of the base adjacent to the heat producing element and plate-like radiating fins or a pin-like radiating fins are protruded on the heat sink body to radiate the heat effectively. The position of the fan assembly is at the center of the heat sink body or is at the offset position from the center of the heat sink body. The heat sink of the present invention can be installed in a portable electronic apparatus such as a portable computer.
44 Citations
12 Claims
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1. A heat sink for cooling a heat producing element, comprising:
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a heat sink body having a center including a base mounted on the heat producing element, wherein the base has a plurality of fins protruding from a surface thereof; and a fan assembly installed in an internal space of the heat sink body, wherein a rotating shaft of the fan assembly is disposed offset from the center of the heat sink body as viewed from a direction parallel to extensions of the fins from the base and parallel to the axis of the rotating shaft, and wherein the fan assembly is surrounded by the plurality of fins around a periphery of the fan assembly, and wherein the axis of the shaft is parallel to the direction that the fins extend from the base. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification