CN204887555U

CN204887555U - Simple and practical's LED lamp

Info

Publication number: CN204887555U
Application number: CN201520504404.4U
Authority: CN
Inventors: 匡小红
Original assignee: Ningbo Zhenhai Callching Electric Technology Co Ltd
Current assignee: Ningbo Zhenhai Callching Electric Technology Co Ltd
Priority date: 2015-07-13
Filing date: 2015-07-13
Publication date: 2015-12-16
Anticipated expiration: 2025-07-13

Abstract

The utility model discloses a simple and practical's LED lamp, including resistance R6, electric capacity C6, rectifier bridge T and unidirectional thyristor Q1, electric capacity C6's one end connecting resistance R6 and 220V alternating current, electric capacity C6's other end connecting resistance R6 and rectifier bridge T's port 1, 3 other ends of connecting the 220V alternating currents of rectifier bridge T's port, rectifier bridge T's port 2 connecting resistance R4, electric capacity C1, chip IC1's pin 1 and chip IC3's pin 1. The utility model discloses simple and practical's LED lamp circuit structure is simple, components and parts are few, utilizes optical coupler as LED lamp operating condition's detecting element, and in a single day the LED lamp opens circuit and will trigger the newspaper emergency light and open, has avoided unexpected outage to give people influence and the loss that brings, consequently has the advantage of with low costs, convenient to use, stable performance.

Description

A kind of simple and practical LED

Technical field

The utility model relates to a kind of LED, specifically a kind of simple and practical LED.

Background technology

LED is widely used in lighting apparatus because have the advantages such as power consumption is low, volume is little, and illumination is most important power mode in daily life, but also there is more defect in LED, LED heat dissipation capacity is larger, withstand voltage weak effect, is easy to when therefore using damage thus cause load cut-off, especially in some important Working Life places, illuminating lamp extinguishing suddenly can bring great impact, therefore needs to be improved.

Utility model content

The purpose of this utility model is the simple and practical LED providing a kind of structure simple, easy to use, to solve the problem proposed in above-mentioned background technology.

For achieving the above object, the utility model provides following technical scheme:

A simple and practical LED, comprises resistance R6, electric capacity C6, rectifier bridge T and unidirectional thyristor Q1, one end contact resistance R6 of described electric capacity C6 and 220V alternating current, the other end contact resistance R6 of electric capacity C6 and the port one of rectifier bridge T, the port 3 of rectifier bridge T connects the other end of 220V alternating current, the port 2 contact resistance R4 of rectifier bridge T, electric capacity C1, the pin 1 of chip IC 1 and the pin 1 of chip IC 3, the other end of electric capacity C1 connects electric capacity C2, electric capacity C3, electric capacity C4, emergency light L, the port 4 of rectifier bridge T, LED group H, the pin 2 of chip IC 1, the pin 1 of chip IC 2 and the pin 3 of chip IC 3, the pin 3 contact resistance R1 of chip IC 1, electric capacity C3, the other end of electric capacity C2 and the pin 8 of chip IC 2, the other end contact resistance R2 of resistance R1 and the pin 7 of chip IC 2, the other end of resistance R2 connects the other end of electric capacity C3, the pin 2 of chip IC 2 and the pin 6 of chip IC 2, the pin 5 of chip IC 2 connects the other end of electric capacity C4, and the other end of resistance R3 connects the anode of unidirectional thyristor Q1, the pin 4 of chip IC 2 and the pin 4 of chip IC 3, the pin 3 of chip IC 2 connects the control pole of unidirectional thyristor Q1, the negative electrode of unidirectional thyristor Q1 connects the other end of emergency light L, the pin 2 contact resistance R5 of chip IC 3, the other end of other end contact resistance R5 of resistance R4 and the other end of LED group H.

As preferred version of the present utility model: the model of described chip IC 1 is LM7805, the model of chip IC 2 is NE555, and the model of chip IC 3 is 4N25.

Compared with prior art, the beneficial effects of the utility model are: the simple and practical LED lamp circuit structure of the utility model is simple, components and parts are few, utilize optical coupler as the detecting element of LED operating state, LED is once open circuit will trigger the unlatching of report emergency light, avoid impact and loss that unexpected power-off brings, therefore have that cost is low, easy to use, the advantage of stable performance.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of simple and practical LED.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1, a kind of simple and practical LED, comprises resistance R6, electric capacity C6, rectifier bridge T and unidirectional thyristor Q1, one end contact resistance R6 of described electric capacity C6 and 220V alternating current, the other end contact resistance R6 of electric capacity C6 and the port one of rectifier bridge T, the port 3 of rectifier bridge T connects the other end of 220V alternating current, the port 2 contact resistance R4 of rectifier bridge T, electric capacity C1, the pin 1 of chip IC 1 and the pin 1 of chip IC 3, the other end of electric capacity C1 connects electric capacity C2, electric capacity C3, electric capacity C4, emergency light L, the port 4 of rectifier bridge T, LED group H, the pin 2 of chip IC 1, the pin 1 of chip IC 2 and the pin 3 of chip IC 3, the pin 3 contact resistance R1 of chip IC 1, electric capacity C3, the other end of electric capacity C2 and the pin 8 of chip IC 2, the other end contact resistance R2 of resistance R1 and the pin 7 of chip IC 2, the other end of resistance R2 connects the other end of electric capacity C3, the pin 2 of chip IC 2 and the pin 6 of chip IC 2, the pin 5 of chip IC 2 connects the other end of electric capacity C4, and the other end of resistance R3 connects the anode of unidirectional thyristor Q1, the pin 4 of chip IC 2 and the pin 4 of chip IC 3, the pin 3 of chip IC 2 connects the control pole of unidirectional thyristor Q1, the negative electrode of unidirectional thyristor Q1 connects the other end of emergency light L, the pin 2 contact resistance R5 of chip IC 3, the other end of other end contact resistance R5 of resistance R4 and the other end of LED group H.

The model of chip IC 1 is LM7805, and the model of chip IC 2 is NE555, and the model of chip IC 3 is 4N25.

Operation principle of the present utility model is: 220V alternating current is by giving a point two-way circuit supply after electric capacity C6 and resistance R6 step-down, rectifier bridge T rectification and electric capacity C1 filtering, resistance R4 of leading up to is added on LED group H, power to the emergency light control circuit be made up of elements such as chip IC 2, unidirectional thyristor Q1 and emergency light L after three terminal regulator IC1 of separately leading up to converts, when normally working, resistance R3, R4, R5 in circuit and photoelectrical coupler IC3 form current detecting part.When LED group H normally works, there is the pressure drop of about 2V at R4 two ends, and this voltage provides bias current through R5 to the light-emitting diode of optocoupler inside, make inner phototriode saturation conduction, and therefore IC2 to be forced lower than 1V to reset because of 4 pin voltages; 3 pin no signals of chip IC 2 export, and unidirectional thyristor Q1 not conducting, emergency light L does not work.When LED group H damage causes its open circuit to quit work, R4 two ends are without pressure drop, optical coupler IC3 internal body diodes is without bias current, cause phototriode to end, 4 pin of IC2 are high level, reset and remove, 3 pin of chip IC 2 export high level, unidirectional thyristor Q1 conducting, emergency light L lights, and reducing turns off the light suddenly to live the inconvenience brought to people.

Claims

1. a simple and practical LED, comprises resistance R6, electric capacity C6, rectifier bridge T and unidirectional thyristor Q1, it is characterized in that, one end contact resistance R6 of described electric capacity C6 and 220V alternating current, the other end contact resistance R6 of electric capacity C6 and the port one of rectifier bridge T, the port 3 of rectifier bridge T connects the other end of 220V alternating current, the port 2 contact resistance R4 of rectifier bridge T, electric capacity C1, the pin 1 of chip IC 1 and the pin 1 of chip IC 3, the other end of electric capacity C1 connects electric capacity C2, electric capacity C3, electric capacity C4, emergency light L, the port 4 of rectifier bridge T, LED group H, the pin 2 of chip IC 1, the pin 1 of chip IC 2 and the pin 3 of chip IC 3, the pin 3 contact resistance R1 of chip IC 1, electric capacity C3, the other end of electric capacity C2 and the pin 8 of chip IC 2, the other end contact resistance R2 of resistance R1 and the pin 7 of chip IC 2, the other end of resistance R2 connects the other end of electric capacity C3, the pin 2 of chip IC 2 and the pin 6 of chip IC 2, the pin 5 of chip IC 2 connects the other end of electric capacity C4, and the other end of resistance R3 connects the anode of unidirectional thyristor Q1, the pin 4 of chip IC 2 and the pin 4 of chip IC 3, the pin 3 of chip IC 2 connects the control pole of unidirectional thyristor Q1, the negative electrode of unidirectional thyristor Q1 connects the other end of emergency light L, the pin 2 contact resistance R5 of chip IC 3, the other end of other end contact resistance R5 of resistance R4 and the other end of LED group H.

2. a kind of simple and practical LED according to claim 1, is characterized in that, the model of described chip IC 1 is LM7805, and the model of chip IC 2 is NE555, and the model of chip IC 3 is 4N25.