| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic parts cooling device which uses a heat sink having a high cooling efficiency and can prolong the service life of a motor. SOLUTION: A plurality of heat radiating fins 23,... are provided on the base 22 of a heat sink 21 so as to surround the outer periphery of an impeller 4 which is provided with blades 5,... and fixed to the rotor 2 of a motor 1. The fins 23,... are arranged on the base 22 along the flowing direction of an air flow flowing out of the impeller 4 when the impeller 4 is rotated. The blades 5,... of the impeller 4 are constituted so that the blades 5,... can such air from a web 17a side and can make the sucked air to flow through passages between respective fins 23. |
