| 摘要 |
PROBLEM TO BE SOLVED: To prevent such a mistake as a stopped state of a mirror is regarded as a failure by providing an operation restricting range inside of the outer edge of a mechanical operation limit region of a mirror in a control portion, and stopping a vertically or horizontally driving motor for driving the mirror and generating an alarm when the mirror reaches the outer edge of the operation restricting range. SOLUTION: A control portion 21 detects the respective input signals from a transversely detecting potentiometer 8 and a vertically detecting potentiometer 9, commands a motor driver circuit 22, and controls actuation of a transversely driving motor 4 and a vertically driving motor 5. In the control portion 21, an operation restricting range programmed by a microcomputer is providing inside of the outer edge of a mechanical operation limit region of a driving unit 3, a power unit. The horizontally driving motor 4 and the vertically driving motor 5 slip when a mirror 2 moves onto a line of the outer edge of the operation restricting range, and a buzzer sound generating circuit 24 is operated when the mirror reaches the outer edge of the operation restricting range. |
