| 摘要 |
<p>PURPOSE:To easily switch the luminous intensity of lamps, by inverting the flicking condition of the lamps just before the inhibition when the condition where the flicking condition of the lamps is controlled by means of the output of a detecting circuit which detects the brightness of the circumference is manually inhibited. CONSTITUTION:A luminous intensity detecting circuit 1 detects the brightness of the circumference and sends outputs for turning on or turning off lamps to a control circuit 2 through a path 11. The control circuit simultaneously turns on or turns off the lamps 3-1-3-8 of a lighting circuit 3 and back lamps 4-1-4-3 of an indicator 4 in accordance with the outputs. When the switch S1 of a control mode change-over switch 5 is depressed under such an automatically controlled condition, the output is transmitted to the control circuit 2 through a path 17. Then the control circuit 2 is inhibited from doing its operation and switches the automatic mode to the manual mode and, at the same time, inverts the flicking condition of the lamps.</p> |
