| 摘要 |
PURPOSE:To reduce the consumption of cleaning liquid and to surely remove dirt, by rejetting cleaning liquid after a predetermined time elapses from the first jetting of cleaning liquid. CONSTITUTION:When a cleaner switch 4 is turned on after an ignition switch 1 is turned on, transistors 5p, 6i, 7k are deenergized. As a result, a transistor 5q is deenergized while a transistor 5r is energized, and therefore, a relay 5s is energized to close a contact 5t so that a cleaner motor 2 is driven to jet the cleaning liquid. After a predetermined time which is determined by the discharge of capacitors 5n, 6j, 7p, elapses, a timer 5 completes its operation so that the motor 2 comes to a stop. Then, after a second predetermined time elapses a timer 6 completes its operation so that transistors 6i, 8 are energized. Therefore, the relay 5s is energized so that cleaning liquid is again jetted. Further, a certain time elapses, a timer 7 completes its operation to deenergized the relay 5s so that the motor 2 comes to a stop.
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