| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply in which the output of a power module is utilized maximally by concentrically and efficiently cooling the power module for no delating use of the power module. SOLUTION: A tubular heat sink 14 is provided with a power module 18 constituting a power supply, in which a ventilation path between plate-like fins 11 is covered in tube shape. A buffer duct 15 is fitted to communicate with the ventilation path of the tubular heatsink 14 and adjusts air stream to feed the entire air stream into the heatsink. A cooling fan 16 feeds air into the buffer duct 15 and the ventilation path of the tubular heatsink 14. COPYRIGHT: (C)2004,JPO
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