| 摘要 |
PROBLEM TO BE SOLVED: To improve cooling efficiency by increasing air suction from a lower opening by the jet pump effect of air introduced from a side opening of a driver body. SOLUTION: The cooling structure of the driver positively sucks air from the lower opening (4) by the jet pump effect by air suction from the side opening (20) below a heat sink (6) of the driver body (1) to increase the amount of air, thereby improving the cooling efficiency. COPYRIGHT: (C)2004,JPO
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