A disk drive box 10 accommodates a plurality of disk drives 20 within
a case 11. A side face of each of the drives 20 is provided with
a heat-absorbing part 40 including a heat pipe, corresponding to heat producing
area HP. The heat taken away by the heat-absorbing part 40 is transmitted
to a heat sink 50 of the rear of a backboard 30 via a heat connector
60. The heat sink 50 is cooled by cooling air flowing through an
air duct 7. By cooling the drive 20 with the heat pipe, clearances
between the drives 20 can be substantially eliminated, and it is made unnecessary
to form an opening for air cooling in the backboard 30. Thus, size reduction
is possible, and it is possible to increase the degree of freedom for a wiring
pattern formed on the backboard 30.
