ELECTRONIC EQUIPMENT

PROBLEM TO BE SOLVED: To protect a power source and a device main body against the trouble that a connector is fused owing to operator's misoperation at the time of battery replacement as to a device which has two backup power sources. SOLUTION: The rear panel 2d of the device main body 2 is provided with an opening part 5 into which a power unit 10 is inserted. The rear panel 13 of this power unit 10 is provided with an opening part 13b for an inlet. The plug of a cord can freely be inserted into and extracted from the inlet 15 extended from the opening part 13b. Further, a power source connector fusing preventing mechanism 20 is provided inside the rear panel 13. The slide plate 21 of this power source connector fusing preventing mechanism 20 is energized upward by a tension coil spring to make it possible to extend an obstacle plate part 21c from the opening part 13b. This state shows that the cord is extracted from the inlet 15 and a power unit 10 is replaced in this state, so that the connector of the power unit 10 and the connector in the device main body 2 can be prevented from fusing or deforming.