| 摘要 |
PURPOSE:To simplify operation and construction by applying the constitution wherein a timer working when ignition and defroster switches are turned 'ON', is made to operate upon the ignition switch being made 'OFF', thereby enabling a motor to be operated for lifting and lowering a window glass pane. CONSTITUTION:A timer 6 works for a predetermined time when ignition and rear defroster switches have been turned 'ON', and makes a defroster to work for a predetermined time. In this case, the input terminal 6a of the timer 6 is connected to a terminal 1 via a differentiation circuit 13 and an inverter 14, while the output terminal 6b of the timer 6 is connected to the control electrode of a transistor 15. Also, the transistor 15 is connected in parallel to another transistor 16 which is turned 'ON' upon receipt of a high level signal at the terminal 1 thereof, and to a power source via a relay 19 for turning 'ON' and 'OFF' the operation circuit of a motor 17 for lifting and lowering a window glass pane. By the aforesaid constitution, when the ignition switch is turned 'OFF', the timer 6 is made to operate, thereby enabling the operation of the motor 17. |
