JPH0376393U

JPH0376393U -

Info

Publication number: JPH0376393U
Application number: JP13698689U
Authority: JP
Priority date: 1989-11-27
Filing date: 1989-11-27
Publication date: 1991-07-31
Anticipated expiration: 2004-11-27
Also published as: JP2520383Y2

Description

[Brief explanation of the drawing]

第１図は、請求項１に記載した本考案の自動調
光装置のブロツク構成図、第２図はその動作を説
明するタイミングチヤート、第３図は請求項２に
記載した本考案の自動調光装置のブロツク構成図
、第４図はその動作を説明するタイミングチヤー
トである。［符号の説明］１０……人体検知手段、１０
ａ……人体検知素子、１１……照度検出手段、１
１ａ……照度検知素子、１２……論理積回路、１
３……タイマー回路、１３′……リトリガブルタ
イマー回路、１４……点灯制御回路部、１４ａ…
…第１の点灯制御回路、１４ｂ……第２の点灯制
御回路、１５……信号切換回路、１６……遅廷回
路。 FIG. 1 is a block diagram of the automatic light control device of the present invention as claimed in claim 1, FIG. 2 is a timing chart for explaining its operation, and FIG. FIG. 4 is a block diagram of the optical device and a timing chart for explaining its operation. [Explanation of symbols] 10...Human body detection means, 10
a... Human body detection element, 11... Illuminance detection means, 1
1a... illuminance detection element, 12... AND circuit, 1
3... Timer circuit, 13'... Retriggerable timer circuit, 14... Lighting control circuit section, 14a...
...first lighting control circuit, 14b...second lighting control circuit, 15...signal switching circuit, 16...delay circuit.

Claims

[Claims for Utility Model Registration] (1) An illuminance detection element that outputs an illuminance detection signal according to the surrounding illuminance, and when the surrounding illuminance falls below a predetermined level, the first illuminance signal is output. and a human body detection means having a human body detection element that detects a human body and outputs a human body detection signal. and an AND circuit that outputs an AND signal of a first illuminance signal output from the illuminance detection means and a human body detection signal output from the human body detection means as a timer activation signal, and an output from the AND circuit. a timer circuit that is activated by a timer activation signal and outputs a timer signal for a predetermined period of time; and a timer circuit that outputs a timer signal for a predetermined period of time; a first lighting control circuit that outputs a lighting control signal to the illumination lamp; and a second level that is preset lower than the first level in response to the first illuminance signal output from the illuminance detection means. and a second lighting control circuit that outputs a lighting control signal to the illumination lamp. (2) In place of the above-mentioned timer circuit, a restartable retriggerable timer circuit that is activated by the timer activation signal output from the AND circuit and outputs the timer signal for a predetermined period of time is used. a delay circuit that receives a timer signal output from the retriggerable timer circuit and outputs a delay signal delayed from the timer signal by a predetermined time; During a period when the late arrival signal is not input, the illuminance signal output from the illuminance detecting means is output as is to the second lighting control circuit and the AND circuit, while when the late arrival signal is input, a signal switching circuit that outputs a signal of the same level as the first illuminance signal to the second lighting control circuit and the AND circuit in place of the illuminance signal output from the illuminance detection means. The automatic light control device according to claim 1, further comprising: an automatic light control device;