| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electronic device having a heat radiation unit which prevents dust from attaching to fins in order not to decrease heat radiation efficiency against heat from a heat generating component. <P>SOLUTION: An electronic device includes: a housing 20a that accommodates electronic components including a heat generating component 24 that generates heat in operation; a radiator 35 that has plural fins 36 arranged with predetermined gaps therebetween so that principal surfaces thereof face one another and to which heat generated from the heat generating component is transmitted; and a fan 31 that blows cooling air from an air exit to the gaps between the plural fins of the radiator. The plural fins of the radiator include first fins 36A disposed at both ends in an arrangement direction and second fins 36B disposed at an intermediate part in the arrangement direction. The first fins are formed so as to have constant gaps between their end portions on a fan side and an end surface of the air exit on a radiator side throughout their length in a lengthwise direction thereof. The second fins are formed so as to have wider gaps between their end portions on the fan side and the end surface of the air exit on the radiator side in at least one of the end portions in a lengthwise direction thereof. <P>COPYRIGHT: (C)2013,JPO&INPIT |
