CN201401669Y

CN201401669Y - General purpose lamp head LED lamp

Info

Publication number: CN201401669Y
Application number: CN2009201269185U
Authority: CN
Inventors: 张宏图; 但德林
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-03
Filing date: 2009-04-03
Publication date: 2010-02-10
Anticipated expiration: 2019-04-03

Abstract

The utility model discloses a general purpose lamp head LED lamp, which comprises a general purpose lamp holder, a plastic connecting outer shell and a transparent outer shell, and an LED drive circuit is installed in the plastic connecting outer shell. The lamp is characterized in that the LED drive circuit is provided with a voltage-reducing rectification circuit, the voltage-reducing rectification circuit comprises an electric bridge, the input end of the electric bridge is connected with the commercial power, the output end is connected with the collecting electrode of a first triode, thecollecting electrode is further connected with a ground-to-ground flying capacitor, the base electrode of the first triode is connected with the collecting circuit of a second triode, the collecting electrode of the second triode is further connected with the collecting electrode of the first triode after being connected with a first resistance in series, the transmitting electrode of the second triode is connected the positive electrode of a voltage-stabilizing tube, and the negative electrode of the voltage-stabilizing tube is earthed, the base electrode of the second triode is connected with the transmitting electrode of the first triode after being connected with a second resistance in series, the transmitting electrode of the first triode outputs direct current low-voltage electricity, and the LED lamp has the obvious effects that the LED drive circuit has simple structure, light weight and stable output voltage, and the LED lamp has no flicker.

Description

Universal socket LED lamp

Technical field

This practicality belongs to a kind of illuminating lamp, relates to a kind of universal socket LED lamp specifically.

Background technology

Traditional illuminating lamp is generally incandescent lamp, and the universal socket of incandescent lamp connects the 220V civil power, and the incandescent lamp heating is many, the energy consumption height, and efficient is low, and the life-span is short.

Present universal socket LED lamp, LED lamp group is installed on the universal socket, directly connect the work of 220V civil power by led drive circuit by incandescent lamp holder, the led drive circuit that wherein has is transformer and mu balanced circuit, make led drive circuit heavy, stroboscopic phenomenon can occur when supply voltage is unstable, the led drive circuit that has is step-down and mu balanced circuit, so that low-voltage to be provided, equally stroboscopic phenomenon can appear when supply voltage is unstable.

The shortcoming of prior art is: present universal socket LED lamp, led drive circuit are heavy, stroboscopic phenomenon can occur when supply voltage is unstable.

The utility model content

Problem to be solved in the utility model is to provide a kind of universal socket LED lamp, and led drive circuit is simple in structure, output voltage stabilization, and the LED lamp does not have stroboscopic.

The technical solution of the utility model is as follows: a kind of universal socket LED lamp, comprise universal socket, this universal socket is installed in the lower end that plastics connect shell, the upper end that these plastics connect shell connects transparent outer cover, in the described plastics connection shell led drive circuit is installed, this led drive circuit input connects described universal socket, output connects the LED screen, its key is: described led drive circuit is provided with step-down rectifying circuit, this step-down rectifying circuit includes electric bridge, the input termination civil power of this electric bridge, the colelctor electrode of output termination first triode, this colelctor electrode cross-over connection electric capacity also and between ground, the base stage of this first triode connects the colelctor electrode of second triode, and the colelctor electrode of this second triode is also gone here and there the colelctor electrode that connects described first triode behind first resistance, the emitter stage of second triode connects the voltage-stabiliser tube positive pole, this voltage-stabiliser tube minus earth connects the emitter stage of described first triode behind steady second resistance of the base stage string of second triode, the emitter stage output dc low-voltage of this first triode.

Electric bridge carries out rectification to the civil power of input, electric bridge output termination reduction voltage circuit input, reduction voltage circuit output output low-voltage direct low-voltage, the second triode T2 is to conducting during work, the second triode T2 colelctor electrode connects the anode of voltage-stabiliser tube, the base voltage that can guarantee the first triode T1 that is connected with the second triode T2 colelctor electrode is constant, makes emitter stage output 3.3V～37V dc low-voltage electricity of the first triode T1, the work of driving LED screen.

Wherein the voltage that the electric capacity of cross-over connection is exported the electric bridge output between first transistor collector and the ground carries out filtering, prevents High-frequency Interference.

Described led drive circuit also is provided with electrochemical capacitor, the emitter stage of described first triode of the positive termination of this electrochemical capacitor, electrochemical capacitor negativing ending grounding.

The emitter stage of positive termination first triode of electrochemical capacitor, negativing ending grounding makes the low-voltage voltage of output stable, does not have stroboscopic when guaranteeing the work of LED screen.

Described LED screen is made up of many groups of LED lamp groups arranged side by side, and this is respectively organized LED lamp group and is cascaded by the LED lamp.

LED screen is made up of LED lamp group arranged side by side, and any one group or several groups of LED lamp groups damages do not influence other other LED lamp group work.

Cross-over connection has anti-lightning strike resistance between two inputs of described electric bridge.

Remarkable result: led drive circuit is simple in structure, light, output voltage stabilization, and the LED lamp does not have stroboscopic, and any one group or several groups of LED lamp groups are damaged other LED lamp group work that do not influence.

Description of drawings

Fig. 1 is a structural representation of the present utility model,

Fig. 2 is an annexation block diagram of the present utility model,

Fig. 3 is led drive circuit figure of the present utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As Fig. 1,2, shown in 3, a kind of universal socket LED lamp, comprise universal socket 1, this universal socket 1 is installed in the lower end that plastics connect shell 1b, these plastics connect the upper end of shell 1b transparent outer cover 1a are installed, in the described plastics connection shell 1b led drive circuit is installed, this led drive circuit input connects described universal socket 1, output connects LED screen 4, described led drive circuit is provided with step-down rectifying circuit 2, this step-down rectifying circuit 2 includes electric bridge D, the input of this electric bridge D connects civil power through decompression capacitor C, the colelctor electrode of the output termination first triode T1, the base stage of the first triode T1 connects the colelctor electrode of the second triode T2, connects the colelctor electrode of the first triode T1 after colelctor electrode string first resistance R 1 of this second triode T2, the emitter stage of the second triode T2 connects voltage-stabiliser tube DZ positive pole, this voltage-stabiliser tube DZ minus earth connects the emitter stage of the described first triode T1 after base stage string second resistance R 2 of the second triode T2, the emitter stage output dc low-voltage of this first triode T1.

The colelctor electrode of first triode T1 cross-over connection capacitor C 1 also and between ground.

Described led drive circuit also is provided with mu balanced circuit 3, and this mu balanced circuit 3 is electrochemical capacitor C2, the emitter stage of the described first triode T1 of the positive termination of this electrochemical capacitor C2, electrochemical capacitor C2 negativing ending grounding.

Described LED screen 4 is made up of LED lamp group arranged side by side, and this is respectively organized LED lamp group and is cascaded by the same number of LED lamp and forms.

Cross-over connection has anti-lightning strike resistance P between two inputs of described electric bridge D.

Its working condition is as follows: universal socket 1 is installed on city's electric lamp holder, the screen board 6 of the circuit board 5 of led drive circuit and LED screen 4 is fixed on plastics and is connected among the shell 1b, after led drive circuit carries out rectification, step-down, voltage stabilizing, filtering to civil power, export stable low-voltage DC and give and respectively to organize the LED lamp on the screen board 6.

Claims

1, a kind of universal socket LED lamp, comprise universal socket (1), this universal socket (1) is installed in the lower end that plastics connect shell (1b), the upper end that these plastics connect shell (1b) connects transparent outer cover (1a), in the described plastics connection shells (1b) led drive circuit is installed, this led drive circuit input connects described universal socket (1), output connects LED screen (4), it is characterized in that: described led drive circuit is provided with step-down rectifying circuit (2), this step-down rectifying circuit (2) includes electric bridge (D), the input termination civil power of this electric bridge (D), the colelctor electrode of output termination first triode (T1), this colelctor electrode cross-over connection electric capacity (C1) also and between ground, the base stage of this first triode (T1) connects the colelctor electrode of second triode (T2), the colelctor electrode of this second triode (T2) is also gone here and there the colelctor electrode that connects described first triode (T1) behind first resistance (R1), the emitter stage of second triode (T2) connects voltage-stabiliser tube (DZ) positive pole, this voltage-stabiliser tube (DZ) minus earth, connect the emitter stage of described first triode (T1) behind base stage string second resistance (R2) of second triode (T2), the emitter stage output dc low-voltage of this first triode (T1).

2, according to the described universal socket LED of claim 1 lamp, it is characterized in that: described led drive circuit also is provided with mu balanced circuit (3), this mu balanced circuit (3) is electrochemical capacitor (C2), the emitter stage of positive described first triode of termination (T1) of this electrochemical capacitor (C2), electrochemical capacitor (C2) negativing ending grounding.

3, according to the described universal socket LED of claim 1 lamp, it is characterized in that: described LED screen (4) is made up of LED lamp group arranged side by side, and this is respectively organized LED lamp group and is cascaded by the same number of LED lamp and forms.

4, according to the described universal socket LED of claim 1 lamp, it is characterized in that: cross-over connection has anti-lightning strike resistance (P) between two inputs of described electric bridge (D).