| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that the conventional motor driving apparatus is constituted such that a fan body is always driven, and thereby even when cooling of a heat generation part is unnecessary, the fan body is driven and energy loss in the whole motor drive unit is increased. SOLUTION: The motor drive unit is composed of a fan driving means 5 for controlling the operation of the fan main body 3, a driving power supply 4 for driving the fan main body 3 and a thermoswitch 6 arranged in order to detect the temperature of the heat generation part 1 and electrically connected between the fan main body 3 and the driving power supply 4. The fan main body 3 is driven when the thermoswitch 6 detects a state that the temperature of the heat generation part 1 exceeds a set temperature. COPYRIGHT: (C)2009,JPO&INPIT
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