| 摘要 |
PROBLEM TO BE SOLVED: To increase the degree of freedom of a disposing position of a fan, to enable enlargement of the size of the fan within the extent of the height of the back of a case body and to enhance the effect of heat radiation of a second space while closing up a first space for installation of a disk drive mechanism part so as to attain a dust-proof effect. SOLUTION: A first space 7 for installing a disk drive mechanism part 9 and a second space 8 for installing a circuit board 11 are formed in a case body by partitioning the inside of the body by a partition plate 4 and a fan member 6. A duct 12 for forming a channel of air led to a fan 5 is formed in the fan member 6 and the opening of the duct 12 is so formed as to communicate only with the second space 8. According to this constitution, the first space 7 is made a closed one so as to attain a dust-proof effect for the first space 7, while the channel of draft by the fan 5 is formed in the second space 8 so as to radiate the heat of this space.
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