| 摘要 |
PROBLEM TO BE SOLVED: To fully realize miniaturization and cost reduction, by providing a space part of a specified width between an outlet side of an air flow direction of a radiation fin whereon an electric component which requires cooling is mounted and a fan, and by arranging an electric component which requires cooling which is different from that of the electric component. SOLUTION: Each air flow direction of a plurality of heat radiation fins 2 is made to coincide with an air flow direction by each electromotive fan 4, and they are assembled in an arrangement on a straight line, and an air chamber 6 as a space part is ensured between the fins 2 and the electromotive fan. A path of air for introducing air from an outside to a part wherein a snubber resistor 3 is arranged through the fin 2 and for discharging it to an outside by each electromotive fan 4 is formed. Since a plurality of kinds of electric parts can be effectively cooled by a common cooling electromotive fan 4, the size of an electric component can be reduced. |
