| 摘要 |
PROBLEM TO BE SOLVED: To provide a lightweight heat sink which can obtain a conspicuously large surface area required for a radiating process to enhance a radiating characteristic by using a metal foamed material for a radiating part. SOLUTION: A metal foamed material 1 having a plurality of pores internally is set as the radiating part. The heat sink needs a base 2 for effectively absorbing heat from an exothermic body, and is molded of a metal plate. The metal plate is joined to the metal foamed material, whereby a heat sink structure using the most basic metal foamed material is constituted. A metal base is adhered to the foamed material by welding or a thermal conduction silicon material, and they may be integrated, and it is possible to intend to integrally manufacture the both from the beginning. COPYRIGHT: (C)2005,JPO&NCIPI
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