| 摘要 |
PURPOSE:To turn a delayed-off lamp on for a preset period when a person approaches after it was turned off with a switch and show a passage or the position of an illumination apparatus by providing a delayed-off person detecting block on a lighting circuit of an incandescent lamp and fluorescent lamps. CONSTITUTION:A delayed-off person detecting block 12 having a delayed-off lamp 6, a delayed-off contact 7, a drive circuit 8, a timer circuit 9, a signal detecting circuit 10 and a person detecting sensor circuit 11 is provided on a lighting circuit provided with an incandescent lamp 3 and fluorescent lamps 4, 5 via an on/off switch 2 to an AC power source 1. When the circuit 10 detects the lights-out by the switch 2, the circuit 10 closes the contact 7 via the circuit 8 with the signal to turn the lamp 6 on for a preset period. The lamp 6 is turned on for a preset period when the circuit 11 detects the approach of a person 13 thereafter. The brightness sufficient for the movement of the person 13 is obtained, and the position of an illumination apparatus can be shown after the function of the delayed-off lamp 6 is exerted. |
