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US 6,179,046 B2Granted
Heat dissipation device
AssigneeIndustrial Technology Research Institute
InventorsJen-Dong Hwang, Chen-Jow Wong, Chih-Chao Yang
Life of this patent
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Abstract
A heat dissipation device with an optimal fin arrangement for cooling a CPU. The optimal angle, height, width, and shape of the fins provide superior heat dissipation. The heat dissipation device can be combined with a fan device to form a heat dissipating unit.
Claims18
A heat dissipation device with optimal fin arrangement comprising:
- a base plate having an upper surface, a first axis, a second axis, and a circular central portion defining a circumference;
- a plurality of first fins emanating from the upper surface, the first fins being radially arranged around the circumference, wherein a number of the first fins extending substantially in the direction of the first axis terminate before the edge of the base plate, these number of first fins defining directional vectors;
- a plurality of second fins emanating from the upper surface of the plate, wherein the second fins are separated from the number of first fins by a first gap, and are formed substantially parallel to and on either side of the directional vectors;
- and
- a plurality of third fins emanating from the upper surface of the plate, wherein each of the third fins are formed between two adjacent second fins and substantially on the directional vectors, and are separated from the first fins by a second gap larger than the first gap.
2 more elements
A heat dissipation unit comprising:
- a base plate having an upper surface, a first axis, a second axis, and a circular central portion defining a circumference;
- at least one first connecting means disposed on the base plate;
- a plurality of first fins emanating from the upper surface, the first fins being radially arranged around the circumference, wherein a number of the first fins extending substantially in the direction of the first axis terminate before the edge of the base plate, these number of first fins defining directional vectors;
- a plurality of second fins emanating from the upper surface of the plate, wherein the second fins are separated from the number of first fins by a first gap, and are formed substantially parallel to and on either side of the directional vectors;
- a plurality of third fins emanating from the upper surface of the plate, wherein each of the third fins are formed between two adjacent second fins and substantially on the directional vectors, and are separated from the first fins by a second gap larger than the first gap,
- a board member with a fan opening formed there through;
- at least one second connecting means disposed on the board member;
- and
- a fan disposed in the fan opening;
- wherein, the base plate and the board member are connected by the first connecting means and the second connecting means such that the fan opening is positioned over the central portion of the base plate.
7 more elements
Dependencies are inferred from the claim text.