| 摘要 |
PROBLEM TO BE SOLVED: To obtain rational radiation effect and enable electric power saving. SOLUTION: This fan module 1 is provided with a fan 2 and a control device 7 controlling rotation speed of the fan 2 based on the temperature of surroundings of a fan drive part 3. The control device 7 is attached to the fan drive part 3 and is provided with a temperature detection sensor 8 detecting the temperature of the surroundings of the fan 2 and the fan drive part 3 and a fan rotation control part 9 controlling rotation speed of the fan 2 to be driven based on the detected temperature. The control device 7 rotates the fan 2 at rotation speed higher than normal rotation speed if the temperature of the surroundings of the fan 2 is higher than the temperature established beforehand, and rotates the fan 2 at rotation speed lower than normal rotation speed if the temperature is lower. COPYRIGHT: (C)2006,JPO&NCIPI
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