| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cooling device which efficiently cools a control board and a peripheral part of the control board in a power supply device to which multiple batteries for an electric tool are attached and outputting alternating current or direct current power supply to another device as it is necessary to efficiently cool the control board for controlling the operations of the attached batteries and prevent malfunctions or the likes due to heat generated in the control board. <P>SOLUTION: Batteries 11 to 14 for an electrical tool are attached to a power supply device 1, and the power supply device 1 may supply electric power to other electric devices. The power supply device 1 comprises a cooling device 60 for cooling a control board 40 for controlling the operations of the batteries 11 to 14, and the cooling device 60 includes a heat sink 61 having multiple heat radiation fins 61a to 61a arranged along the longitudinal direction of the control board 40 and flows cooling air into a ventilation passage 64 between the heat radiation fins 61a, 61a with a cooing fan 62 to efficiently cool the control board 40. <P>COPYRIGHT: (C)2013,JPO&INPIT |
