| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric apparatus that can efficiently cool a cooled part with reduced noises by using a centrifugal fan. SOLUTION: The electric apparatus includes the centrifugal fan 5 that draws air when an impeller 5d rotates in a casing 5c and includes a blowoff channel of the air from the impeller in the casing, which is formed so as to spread in a rotating direction of the impeller, and first cooled parts 50R, 50B, 59R and 59B and second cooled parts 50G and 59G that have a necessary cooling air capacity larger than that of the first cooled parts, the first cooled parts and the second cooled parts being cooled by the air drawn by the fan, wherein a drawing surface 5a of the fan includes a first drawing area A and a second drawing area B that includes a drawing speed higher than that of the first drawing area, which are formed as areas that have the drawing speed different from each other, when the impeller rotates. The second drawing area is arranged closer to the second cooled part than the first cooled part. COPYRIGHT: (C)2009,JPO&INPIT
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