| 摘要 |
<p>PURPOSE:To surely prevent a winker from being left turning on, by providing such an arrangement that a timer circuit is energized simultaneously with the flashing operation of a winker which is actuated by manipulating a winker switch, and after a predetermined time elapses, when a time-up signal is issued, the winker is turned off. CONSTITUTION:During the drive of a vehicle, when, for example, a right-turn winker switch 1 is turned on, inverters 19, 21 issue H-level signals to turn on an FF 22 so that a drive circuit 8 flashes a right-turn winker. Further, since the Q-output of the FF 22 becomes a H-level, an one-shot circuit 28 delivers an H-level signal to reset binary counters 36, 37 to initiate counting. Further, when a predetermined time (16sec) has elapsed, the counter 37 delivers an H- level output which revert the FF 22 into a turn-off condition, and therefore, the right-turn winker is extinguished. Further, when the vehicle comes to a stop during right-turn, the counting by the counters 36, 37 are interrupted, and the counters 36, 37 are reset when the vehicle is restarted.</p> |
