Electronic component cooling apparatus

摘要

An electronic component cooling apparatus capable of permitting a heat sink to exhibit satisfactory cooling efficiency and increasing durability of a motor. A plurality of radiation fins are provided on a base of a heat sink in a manner to surround an impeller including blades and fixed on a rotor of a motor. The radiation fins are arranged so as to be in conformity to a direction of flowing of air from the impeller being rotated. The blades each are constructed so as to permit air to be sucked in from a side of webs and discharged through an air passage defined between each adjacent two of the radiation fins.