| 摘要 |
PURPOSE:To aim at automation in a light-off delay, by turning on a light in discriminating the necessity of the light-off delay on the basis of output of each memory circuit, which stores the output of an ignition switch by means of each detection signal for opening or closing the door and then turning off the light after the elapse of a specified period of time. CONSTITUTION:When a door is opened and a door switch is turned on, a signal out of an input element switch 1 is stored in a memory circuit 3 but when the door is closed and the door switch 2 is turned off, the signal out of the input element switch 1 is stored in another memory circuit 4. And, at a discrimination circuit 5, delay action takes place only when an ignition switch is turned on in time of door opening and the ignition switch becomes turned on in time of door closing. Therefore, during the daytime, in order to switch on a light before the ignition switch is turned to OFF, the door is left unopened whereby the switch remains kept off intact so that the delay action is no longer carried out. In addition, the circuit 5 emits its output to a light driving circuit 6, turning on a room light 7, while a measuring circuit 8 resets these memory circuits 3 and 4 after the elapse of a specified period of time and then turns off the light 7. |
