HEAT-EMITTING ELEMENT COOLING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a heat-emitting element cooling apparatus enhancing cooling effect on a heat-emitting element as well as reducing noise. SOLUTION: A heat sink 3 includes a core portion 7 and a plurality of radiation fins 9 fixed to the core portion 7. Dimensions of the core portion 7 and the radiation fins 9 are defined in such a manner that the diameter L1 of the core portion 7 should be 37% to 45% of the diameter L2 of a shape depicted by a virtual connecting line 13. COPYRIGHT: (C)2009,JPO&INPIT