CN201129654Y

CN201129654Y - Charging type AC/DC small night lamp

Info

Publication number: CN201129654Y
Application number: CNU2007200617153U
Authority: CN
Inventors: 田畴
Original assignee: Guangdong Kennede Electronics Manufacturing Co Ltd
Current assignee: Guangdong Kennede Electronics Manufacturing Co Ltd
Priority date: 2007-12-18
Filing date: 2007-12-18
Publication date: 2008-10-08
Anticipated expiration: 2017-12-18

Abstract

The utility model relates to a charging-type alternative-direct current dual-purpose small night lamp, which is an energy-saving lamp for illumination at night. The utility model comprises a shell and a transparent cover, a luminophor and a working circuit in the shell and the cover, wherein the working circuit is a lighting circuit and a light control circuit, the working circuit is connected with a charging battery, a charging circuit and an alternative-direct power supply automatic converter. The utility model realizes direct-current backup illumination and can continuously work after power off of alternative current.

Description

Rechargeable AC/DC mini light night

Technical field

The utility model relates to a kind of rechargeable AC/DC mini light night, the energy-saving lamp that uses for night illumination.

Background technology

The general lighting energy saving mini light night in market can only use alternating current as power supply at present, can't provide illumination after the alternating current outage, brings inconvenience to life.

The utility model content

The purpose of this utility model is to overcome above-mentioned defective, and a kind of rechargeable AC/DC mini light night is provided.

In order to achieve the above object, the utility model comprises shell and transparent housing, is arranged on illuminator and operating circuit in shell and the outer cover; Described operating circuit is lighting circuit and light-operated circuit; Also be connected with rechargeable battery, charging circuit and supplied by AC/DC electricity automatic switching circuit in the described operating circuit.

The two ends of the utility model rechargeable battery are connected with overcharge protection circuit.

Owing to adopted such scheme, the utility model to realize the direct current standby lighting, after AC outage, still can work on.The utility model lamp body is small and exquisite, energy-efficient simultaneously, long service life.

Description of drawings

Fig. 1 is the exploded view of the utility model structure;

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

The specific embodiment

As shown in fig. 1, in the cavity that is constituted by the drain pan 6 of shell and panel 1 and transparent housing 2, be provided with wiring board 4, be connected with operating circuit above, be connected with battery 5, several illuminators 8 and charging indicator light 9 etc.Illuminator and indicator lamp are fixed on the support 10, and the back is provided with reflective sheeting 7, to increase the brightness of light.Be equipped with a manual switch 3 on the panel, be equipped with pin 11 on the drain pan, connect the socket of alternating current.

As shown in Figure 2, operating circuit partly is made up of charging circuit 1, battery BT, overcharge protection circuit 2, light-operated circuit 3, lighting circuit 4 and supplied by AC/DC electricity change-over circuit 5 etc., and their composition and connection are all similar to conventional circuit.

Charging circuit 1 mainly is made up of charging connector AC-2, AC-1, capacitor C 1, C2, resistance R 1 and bridge rectifier circuit D1-D4.The alternating current that comes via AC1, AC2, through resistance R 1, shunting and the dividing potential drop of capacitor C 1, C2 after, the electric current of about 220mA is provided, after the D1-D4 rectification, BT provides DC voltage to battery.Charging indicator light LED4 and the two ends that also are connected circuit after resistance R 10 is connected in series play the charging indicative function.

Overcharge protection circuit 2 mainly is made up of triode Q1, diode Z1 and resistance R 2-R4, and BT is full of when battery, and voltage raises, the Q1 conducting, and the R4 discharge, charging current descends with the protection battery.

Light-operated circuit 3 mainly is made up of triode Q2, Q3, capacitor C 4, resistance R 5-R8 and photo resistance CDSA.When brightness was enough, Q3 ended, and Q2 is ended turn off the light; When brightness was not enough, the Q3 conducting made the bright lamp of Q2 conducting.

Lighting circuit 4 mainly is made up of LED and resistance R 9, and LED can be several, connects with resistance R 9 in back in parallel, is connected then between the emitter stage of the colelctor electrode of Q3 and Q2.

Supplied by AC/DC electricity change-over circuit 5 is made up of switch SW 1, diode D6.When switch at the AC state, directly, do not consume battery electric quantity to the LED power supply of lighting circuit 4; When switch during at the DC state, D6 ends Q3 and turns off the light, and Q3 makes Q2 work, automatic bright lamp during mains failure.

Claims

1. a rechargeable AC/DC mini light night comprises shell and transparent housing, is arranged on illuminator and operating circuit in shell and the outer cover; Described operating circuit is lighting circuit and light-operated circuit; It is characterized in that: also be connected with rechargeable battery, charging circuit and supplied by AC/DC electricity automatic switching circuit in the described operating circuit.

2. a kind of rechargeable AC/DC bulb according to claim 1, it is characterized in that: the two ends of described rechargeable battery are connected with overcharge protection circuit.