CN2064561U

CN2064561U - Auto turning-off light switches for use in stairs and corridors

Info

Publication number: CN2064561U
Application number: CN 89205371
Authority: CN
Inventors: 霍锦州; 栾福友
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-09-13
Filing date: 1989-09-13
Publication date: 1990-10-24

Abstract

The utility model discloses an auto turning-off light switch for use in stairs and corridors. A controlling switch comprises a bidirectional thyristor switch, rectifying electric circuits, time delay electric circuits, and triggering electric circuits. The utility model which can replace various double connection or single connection switches in stairs and corridors has the advantages of strong applicability, small size, long service life, convenient operation, contactless control, and low cost.

Description

Auto turning-off light switches for use in stairs and corridors

The utility model belongs to electrical equipment open and close device, and specifically a kind of stair, passageway are from turn off switch for lamp.

At present, stair, passageway illuminating lamp all adopt mechanical twin toggle switch, its switch life is short, once often one walked to know after turning on light, thereby occur all night kept burning day and night, wasted much electricity, original illumination is removed for avoiding above-mentioned situation in the unit stair that have, passageway, brings worry again for the people's life, safety.

The purpose of this utility model is to carry out at the problem employing electronic switching circuit of above-mentioned existence to turn off the light automatically, turns off the light when you leave the conservation of power energy; Adopt contactless control, improve the anti-damage capability of switch.

The utility model technical solution:

Stair, passageway partly are made up of power supply, time-delay, triggering, control etc. from turn off switch for lamp, wherein C ₁, D ₁, D ₂, C ₂Form power unit C ₁, D ₁Be composed in series step-down, rectification, D ₂Be that voltage-stabiliser tube is connected to C ₁, D ₁Between, can make the voltage after the rectification more stable, and give C ₁The discharge approach is provided.C ₂Be parallel to both ends of power to power filter; AN, C ₃Series connection is connected across and constitutes charge circuit between the power supply, wherein termination R under the AN ₁, R ₁Another termination BG ₁Base stage, R ₁And C ₃Form discharge loop again, its discharge time determine switch the bright time of lamp; BG ₁, BG ₂Current collection extremely be connected to R ₂An end pass through R ₂Be connected to power supply, BG ₁Emitter and BG ₂Base stage link to each other; SCR connects with bulb, electrical network phase line, and its control utmost point G is connected to BG ₂Emitter, be subjected to BG ₂The control of emitter-base bandgap grading signal.

The utility model has overcome the short shortcoming of conventional mechanical switch life, has adopted electronic non-contact switch, has improved its life-span greatly, and low with price in design, stable performance, reliable in action are aim.Adopted halfwave rectifier as rectifying part, for guaranteeing its stable, reliability, power supply has designed voltage stabilizing circuit, so the adaptive capacity of electrical network is strengthened.In addition, in appearance, all be designed on the physical dimension the same with existing switch on wall so that the old and new change.

Below in conjunction with accompanying drawing the utility model is further described:

Switch inserts electrical network by Fig. 3, promptly forms 9V voltage at the AB two ends, clicks ANC ₃Charging rapidly, about the about 9V of its both end voltage, this voltage passes through R ₁Add to BG ₁Base stage BG ₁Conducting, BG thereupon ₂Also conducting, BG ₂The conducting voltage of emitter voltage＞SCR, the SCR conducting, lamp is bright.C ₃The voltage at two ends passes through R ₁, BG ₁Be discharge, (about one minute) C over time ₃Both end voltage descends gradually, when being brought down below BG ₁Conducting required voltage value the time BG ₁End, simultaneously BG ₁Emitter lose voltage, BG ₂Base stage also lose voltage, BG ₂Lose voltage by emitter, the G utmost point of SCR loses to be kept conducting voltage SCR and ends, thereby lamp goes out to constitute and turns off the light when you leave.

Claims

A kind of have stair, an automatic turn off switch for lamp device in passageway, adopted capacitance decompression, halfwave rectifier, time-delay transistor to trigger and by the transistor switching circuit that bidirectional thyristor is formed, it is characterized in that:

A, C ₁, D ₁, D ₂, C ₂Constitute power supply unit, C ₁, D ₁Be series on the electrical network phase line C ₁, D ₁Between meet voltage-stabiliser tube D ₂, D ₂The other end zero line that gets access to grid, C ₂Be attempted by D ₁An end and the electrical network zero line on;

B, AN, C ₃The series connection cross-over connection is in C ₂Two ends constitute charging circuit, the wherein following termination R of AN ₁, R ₁In addition termination BG ₁Base stage;

C, BG ₁, BG ₂Collector electrode be connected to R altogether ₂An end, BG ₁Emitter-base bandgap grading and BG ₂Base stage link to each other;

D, SCR and bulb, electrical network live wire are in series, and its control utmost point G is connected to BG ₂Emitter.