CN2045557U

CN2045557U - Auto-off switch device for light lamp

Info

Publication number: CN2045557U
Application number: CN 88209866
Authority: CN
Inventors: 关国梁; 杨金漫
Original assignee: Engineering Development Department Shenzhen Industry And Trade Co China Elect
Current assignee: Engineering Development Department Shenzhen Industry And Trade Co China Elect
Priority date: 1988-08-17
Filing date: 1988-08-17
Publication date: 1989-10-04

Abstract

An auto-off switch device for light lamp is composed of a common triode transistor, a diode, an electric condenser, a resister, a bidirectional thyristor, a housing and a switch. The utility model comprises the integration of three partial circuits composed of a capacitance step-down rectifying circuit, a delaying triggering circuit and a controlling circuit coupled with the delaying triggering circuit directly, etc. The utility model can be made into different forms, such as a lamp cap, a base adapter, a female plug and a switch, etc. The auto-off switch device for light lamp is suitable for the timing control of various small power electric appliances, in particular to the lighting facilities in the corridor or the public hallways, to reduce the wastage of lighting up throughout the night because of nobody switches off and achieve the dualpurpose of using conveniently and saving electrical energy.

Description

Auto-off switch device for light lamp

The present invention relates to a kind of novel switching device that automatically shuts down, it is applicable to automatically shutting down of the timing controlled of various small-power electrical equipment, particularly illuminating lamp.

Before the utility model was made, what have abroad that some illuminating lamps use automatically shut down switch production and sale, but all is mechanical, needs certain machining condition during production, and used raw material are many, and volume is bigger, and electrical contact is arranged.Domestic also have similar products, but structure is complicated, and cost is higher.The existing switching device that automatically shuts down mostly has following defective as a whole: (1) needs power transformer; (2) need relay; (3) need unijunction transistor; (4) need the pulse coupling transformer; (5) need the external dc power supply power supply; (6) delay time can only be below one minute.

It is a kind of easy to use that the utility model provides, simple in structure, the new type auto stopcock device of low cost of manufacture, it can be directly used in the timing controlled of various small-power electrical equipment easily, particularly can be used on the lighting installation of corridor or public aisle, to reduce the waste of turning on light all through the night of turning off the light and being caused, reach the dual purpose of convenient use and saves energy owing to nobody.

The utility model is that the integrated application by three kinds of circuit realizes.Form the capacitor step-down rectifier circuit part by capacitor, diode, resistance.After switch closed, AC power was received on the circuit, and behind capacitor step-down, again through diode rectification, capacitor filtering and voltage stabilizing didoe voltage stabilizing are added on the delay trigger circuit then.Delay trigger circuit partly is made up of common triode transistor, diode, capacitor, resistance, normally open push button switch.No more than three of the common triode transistor that this partial circuit comprised.When on the switch closure, because of the voltage at electric capacity two ends is still low, triode transistor ends, and the The Trigger of Bidirectional Triode Thyristor utmost point of control circuit part is triggered through a resistance by power supply, the control circuit conducting, and bulb is bright.(charging interval generally is 3 minutes along with the lengthening in charging interval, can preset), voltage on the capacitor of delay trigger circuit part surpasses certain numerical value, after being about 1.9 volts, triode transistor is conducting in succession, and the voltage that The Trigger of Bidirectional Triode Thyristor extremely goes up no longer can be kept the control circuit conducting, so at alternating source exchange polarity chron, bidirectional triode thyristor just ends, and bulb extinguishes.Afterwards, bidirectional triode thyristor is kept and is ended, disconnect up to switch, and when closing again, just conducting once more.

According to different application scenarios, it is multi-form that the utility model can be made lamp holder, lamp holder adapter, socket adaptor, switch etc.

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

Fig. 1 is the sectional schematic diagram of a kind of concrete structure of the utility model.

Fig. 2 is a basic circuit diagram of the present utility model.

See figures.1.and.2, capacitor step-down rectifier circuit part connects institute by capacitor ［ 1 ］, bleeder resistance ［ 2 ］, protective resistance ［ 3 ］, rectifier diode ［ 4 ］, rectifier diode ［ 5 ］, voltage stabilizing didoe ［ 6 ］, filtering capacitor ［ 7 ］ by as shown in Figure 2 mode and forms.To 0.5 μ F, its effect is with the civil power step-down to the value of capacitor ［ 1 ］ from 0.1 μ F, so that the diode of back ［ 4 ］, ［ 5 ］ rectification.Bleeder resistance ［ 2 ］ is to be used for the electric charge that amassed on vent discharge container ［ 1 ］ after the switch opens, with protective circuit.Transient current when protective resistance ［ 3 ］ is opened in order to restricting circuits.Rectifier diode ［ 4 ］, ［ 5 ］ are as halfwave rectifier.Voltage stabilizing didoe ［ 6 ］ is as stable DC voltage.Filtering capacitor ［ 7 ］ is with the voltage filter after the halfwave rectifier, smooth voltage.Delay trigger circuit part connects institute by charging resistor ［ 8 ］, charging capacitor ［ 9 ］, trigger triode ［ 10 ］, trigger triode ［ 11 ］, emitter resistance ［ 12 ］, current-limiting resistance ［ 13 ］, trigger triode ［ 14 ］, load resistance ［ 15 ］ by as shown in Figure 2 mode and forms.Charging resistor ［ 8 ］ is used for charging and supplies with bias current and give trigger triode ［ 10 ］, and the voltage on the charging capacitor ［ 9 ］ makes trigger triode ［ 10 ］ conducting after being higher than certain value, with then conducting of ［ 10 ］ direct-coupled trigger triode ［ 11 ］.The electric current that flows through ［ 11 ］ upward forms voltage at emitter resistance ［ 12 ］ and can be coupled to subordinate's trigger triode ［ 14 ］, and current-limiting resistance ［ 13 ］ is excessive as restriction trigger triode ［ 11 ］ electric current when conducting.Trigger triode ［ 14 ］ is as the bidirectional triode thyristor ［ 16 ］ that triggers the back, load resistance ［ 15 ］ is the load of ［ 14 ］, as the bidirectional triode thyristor ［ 16 ］ that triggers the back, ［ 16 ］ directly are coupled with delay trigger circuit and form the control circuit part, as the break-make of control lighting lamp circuit.The above electronic devices and components all is welded on the printed circuit board, within the shell ［ 17 ］ of packing into then.

Claims

1; one by common triode transistor; diode; capacitor; resistance; bidirectional triode thyristor; shell; switch is formed automatically shuts down switching device; it is characterized in that including capacitor step-down rectifier circuit; three partial circuits such as delay trigger circuit and control circuit comprehensive; capacitor step-down rectifier circuit partly is by capacitor [1] bleeder resistance in parallel [2]; series connection protective resistance [3]; again with rectifier diode [4]; rectifier diode [5]; voltage stabilizing didoe [6]; filtering capacitor [7] connection is formed; delay trigger circuit partly is after being connected with charging capacitor [9] by charging resistor [8] and trigger triode [10]; trigger triode [11] connects; [11] emitter is connected with emitter resistance [12] and current-limiting resistance [13]; [12] and [13] again respectively with the emitter of trigger triode [14]; base stage links; [14] a collector electrode series connection load resistance [15], control are directly to be realized the coupling back by the final stage [14] of bidirectional triode thyristor [16] with delay trigger circuit.

2, the switching device that automatically shuts down as claimed in claim 1, the value of capacitor ［ 1 ］ that it is characterized in that capacitor step-down rectifier circuit part from 0.1 μ F to 0.5 μ F.

3,, it is characterized in that no more than three of the common triode transistor that delay trigger circuit part comprised as claim 1 or the described switching device that automatically shuts down of claim 2.