| 摘要 |
PROBLEM TO BE SOLVED: To provide an indicator lighting device capable of eliminating any of instantaneous erroneous lighting in an indicator lamp 26, a delay in lighting and an increase in dark current, even in a circuit including a constant voltage power supply 4 which becomes effective during an idle stop. SOLUTION: There is provided a dark current off circuit 13 which leads a ground-side voltage when a voltage is applied from a terminal of a battery 8 power supply through a stabilized power supply 4 to turn on a light switch 2 passing a current through a head lamp 2. During an idle stop in which a power supply voltage drop caused by a starter start is estimated, a normally closed contact 10b at both terminals of the stabilized power supply 4 is in an open state. Also, there is provided a voltage detection circuit with a transistor, in which a voltage is supplied to one end from the output side of a dark current off circuit 13, and which leads a ground-side voltage at the other end when a light switch 2 is on and which turns on with output voltages of voltage divided circuits 21 and 22. COPYRIGHT: (C)2011,JPO&INPIT |
