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Heat sink

  • US 5,535,816 A
  • Filed: 08/29/1994
  • Issued: 07/16/1996
  • Est. Priority Date: 10/15/1993
  • Status: Expired due to Fees
First Claim
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1. A heat sink comprising:

  • a heat receiving plate adapted to be mounted on a heat generating body; and

    at least one heat radiating fin stacked on said heat receiving plate, wherein slits which pass through said heat radiating fin are formed on a first portion of a flat plate surface of said heat radiating fin, and a plurality of fin protrusions are provided in a second portion on the flat plate surface, a first grouping of said plurality of fin protrusions is aligned and located along an edge of one of said slits and a second grouping of said plurality of fin protrusions is aligned and located along an opposite edge of said one of said slits, wherein each grouping is provided with a vally between adjacent fin protrusions, said valleys of said first grouping being aligned with said fin protrusions of said second grouping such that the fin protrusions of said first and second groupings are alternately provided along said edges of said one of said slits, wherein an interval between said heat radiating fin and one of said heat receiving plate and additional heat radiating fins is maintained by said fin protrusions.

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