| 摘要 |
PROBLEM TO BE SOLVED: To provide a door mirror control device for performing stable detection corresponding to the voltage fluctuation range of a DC power supply. SOLUTION: The door mirror control device includes a first control circuit 1 for supplying a current to a driving motor M to move a door mirror from a rising position to a storage position, and a second control circuit 2 for supplying a current to move the door mirror from the storage position to the rising position. A change-over switch SW1 controls the door mirror to be driven. The first and second control circuits include overcurrent detecting circuits 5, 6 for detecting an overcurrent flowing in the driving motor, current-carrying electronic switching elements Q1, Q2 to be turned on with changeover operation for starting a current to be carried, interrupting electronic switching elements Q3, Q4 for forcibly turning off the current-carrying electronic switching elements in accordance with detected voltage, and delay circuits 3, 4 for changing the current-carrying electronic switching elements from turn-off into turn-on in response to the changeover operation and for changing the current-carrying electronic switching elements from turn-on into turn-off with a delay from the forcible turn-off by the interrupting electronic switching elements, respectively. COPYRIGHT: (C)2010,JPO&INPIT
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