CN207340226U - A kind of LED light short-circuit protector - Google Patents

Abstract

The utility model discloses a kind of LED light short-circuit protector, including regulator circuit, optical coupling isolation circuit and alarm control circuit；The regulator circuit includes chip IC 1, diode D1, diode D2 and capacitance C2, and optical coupling isolation circuit includes resistance R3 and chip IC 2, and alarm control circuit includes triode V1, triode V2, relay K and loudspeaker B.The utility model LED light short-circuit protector carries out short-circuit protection control using photo-coupler; so that carry out light-coupled isolation between main circuit and protection circuit; it does not interfere with each other; when running into short circuit; it can not only be effectively protected and be damaged with electric loading from short circuit; alarm can be also sent at the same time, remind the timely queueing problem of user.

Description

A kind of LED light short-circuit protector

Technical field

A kind of short-circuit protector is the utility model is related to, is specifically a kind of LED light short-circuit protector.

Background technology

With the continuous improvement of people's living standards, electronic equipment has become an essential part in life, especially It is that various household electrical appliance bring great convenience to life, the work of people, supply tool of this kind of electronic device to electric energy There is higher requirement.Especially in technical field of LED illumination, protection situations such as to short circuit is extremely important, once load occurs Short circuit, can make it that conducting electric current increases rapidly inside LED, and then heat dissipation capacity increases, so as to burn LED light, causes larger warp Ji loss.

Utility model content

The purpose of this utility model is to provide a kind of LED light short-circuit protector simple in structure, easy to use, to solve Problem proposed in the above background technology.

To achieve the above object, the utility model provides following technical solution：

A kind of LED light short-circuit protector, including power supply, Voltage stabilizing module, optical coupling module and short-circuit protection alarm module；It is special Sign is that the power supply connects the input terminal of the Voltage stabilizing module, and the output voltage of the Voltage stabilizing module is supplied respectively to the light Coupling module and LED light, the optical coupling module are also connected with the short-circuit protection alarm module, and the LED light is also connected with the optocoupler Module, the short-circuit protection alarm module are also connected with the power module by storage battery power supply, the short-circuit protection alarm module With the Voltage stabilizing module.

Preferred solution as the utility model：The Voltage stabilizing module includes chip IC 1, diode D1, diode D2, electricity R1 and resistance R2 is hindered, the optical coupling module is chip IC 2, and the LED light is lamps and lanterns L, and short-circuit protection alarm module includes three poles Pipe V1, triode V2, switch S1, relay K and loudspeaker B, the pin 1 of chip IC 1 connect the cathode of diode D1, capacitance C1 and The anode connection resistance of the other end connection power supply VCC, diode D1 of the contact K-1 of the contact K-1 of relay K, relay K R1, resistance R3, the cathode of diode D2, the pin 3 and lamps and lanterns L of chip IC 1, anode connection capacitance C2, the resistance of diode D2 The pin 2 of R2, the other end of resistance R1 and chip IC 1, the other end of the other end connection capacitance C2 of capacitance C1, resistance R2 it is another One end, the anode of diode D3, the other end of lamps and lanterns L, the emitter of triode V1, switch S1, loudspeaker B, storage battery E it is negative The emitter of 2 inside phototriode of pole, the cathode of 2 interior light emitting diodes of chip IC and chip IC, the other end of resistance R3 The anode of 2 interior light emitting diodes of chip IC is connected, the collector connection resistance R4's of 2 inside phototriode of chip IC is another End and triode V1 base stage, the base stage of the collector connecting triode V2 of triode V1, triode V2 emitter connection after The other end of the other end connecting valve S1 of electric appliance K, relay K, the collector of the other end connecting triode V2 of resistance R4, after The cathode of the contact K-2 and storage battery E of electric appliance K, the other end of the other end connection loudspeaker B of the contact K-2 of relay K.

Preferred solution as the utility model：The model LM317 of the chip IC 1, chip IC 2 are 4N25 optical couplings Device.

Preferred solution as the utility model：The switch S1 switchs for closed button.

Preferred solution as the utility model：The triode V1 and V2 is N-type triode.

Compared with prior art, the beneficial effects of the utility model are：The utility model LED light short-circuit protector utilizes light Coupler carries out short-circuit protection control so that carries out light-coupled isolation between main circuit and protection circuit, does not interfere with each other, run into short circuit When, it can not only be effectively protected and be damaged with electric loading from short circuit, while alarm can be also sent, remind user to arrange in time Except problem, there is long lifespan using the improved LED light of the design, the advantages of being hardly damaged.

Brief description of the drawings

Fig. 1 is the circuit diagram of LED light short-circuit protector.

Fig. 2 is the circuit diagram of the utility model embodiment.

Embodiment

The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work All other embodiments obtained, shall fall within the protection scope of the present invention.

Referring to Fig. 1, a kind of LED light short-circuit protector, including regulator circuit, optical coupling isolation circuit and controlling alarm electricity Road；The regulator circuit includes chip IC 1, diode D1, diode D2 and capacitance C2, optical coupling isolation circuit include resistance R3 and Chip IC 2, alarm control circuit include triode V1, triode V2, relay K and loudspeaker B；

The pin 1 of the chip IC 1 connects the contact K-1, relay K of the cathode of diode D1, capacitance C1 and relay K The anode connection resistance R1 of the other end connection power supply VCC, diode D1 of contact K-1, resistance R3, diode D2 cathode, The pin 3 and lamps and lanterns L of chip IC 1, anode connection capacitance C2, resistance R2, the other end of resistance R1 and the chip IC 1 of diode D2 Pin 2, the other end, the other end of resistance R2, the anode of diode D3, the lamps and lanterns L of the other end connection capacitance C2 of capacitance C1 The other end, the emitter of triode V1, switch S1, loudspeaker B, the anode of storage battery E, chip IC 2 interior light emitting diodes The emitter of 2 inside phototriode of cathode and chip IC, other end connection 2 interior light emitting diodes of chip IC of resistance R3 Anode, the other end of collector connection resistance R4 and the base stage of triode V1 of 2 inside phototriode of chip IC, triode V1 Collector connecting triode V2 base stage, triode V2 emitter connection relay K, relay K the other end connection opens The other end of S1 is closed, the collector of other end connecting triode V2, the contact K-2 of relay K and the storage battery E of resistance R4 are just Pole, the other end of the other end connection loudspeaker B of the contact K-2 of relay K.

The model LM317 of chip IC 1, chip IC 2 are 4N25 photo-couplers.Switch S1 is key switch.

The operation principle of the utility model is：Power supply is the Rectified alternating current after over commutation is depressured, into Voltage stabilizing module Voltage stabilization is carried out, Voltage stabilizing module provides electric energy to optical coupling module and LED light, and when short circuit occurs in LED light, its voltage can influence To optical coupling module, optical coupling module sends trigger signal to short-circuit protection alarm module therewith, and short-circuit protection alarm module is by electric power storage Pond is independently-powered, it is directly fed back on the electric path between power supply and Voltage stabilizing module after being triggered, power supply of cutting off the power, and And alarm can also be sent, achieve the purpose that protection alarm.

A kind of embodiment circuit of the design as shown in Fig. 2, in use, push button S1 first, then relay K dead electricity, Its contact K-1 is attracted, and the original paper composition such as chip IC 1, diode D1, diode D2, resistance R1, resistance R2 in circuit is typical Regulator circuit, exports steady dc voltage from 3 feet of chip IC 1, photo-coupler IC2 internal illuminations is added in after resistance R3 The anode of diode, then IC2 internal body diodes conducting shine, its internal triode obtains illumination and turns on, therefore triode V1 Base voltage reduce, V1 and V2 be not turned on, and trip switch S1, circuit can also maintain its normal work at this time, and lamps and lanterns L continues Electric work is obtained, when running into lamps and lanterns L short circuits, is then short-circuited by the voltage of resistance R3,2 interior light emitting diodes of chip IC are put out Go out, triode cut-off inside it, the base stage of triode V1 therefore must be electric, and V1 and V2 are both turned on, and relay K obtains electric, its contact K-1 is disconnected, and achievees the purpose that short-circuit protection, its contact K-2 is attracted, and is connected the power supply of loudspeaker B, is sent alarm.

Claims (5)

1. a kind of LED light short-circuit protector, including power supply, Voltage stabilizing module, optical coupling module and short-circuit protection alarm module；Its feature It is, the power supply connects the input terminal of the Voltage stabilizing module, and the output voltage of the Voltage stabilizing module is supplied respectively to the optocoupler Module and LED light, the optical coupling module are also connected with the short-circuit protection alarm module, and the LED light is also connected with the optocoupler mould Block, the short-circuit protection alarm module by storage battery power supply, the short-circuit protection alarm module be also connected with the power module and The Voltage stabilizing module.

2. a kind of LED light short-circuit protector according to claim 1, it is characterised in that the Voltage stabilizing module includes chip IC1, diode D1, diode D2, resistance R1 and resistance R2, the optical coupling module are chip IC 2, and the LED light is lamps and lanterns L, Short-circuit protection alarm module includes triode V1, triode V2, switch S1, relay K and loudspeaker B, the pin 1 of chip IC 1 and connects Connect the contact K-1 of the cathode of diode D1, capacitance C1 and relay K, the other end connection power supply of the contact K-1 of relay K Anode connection resistance R1, resistance R3, the cathode of diode D2, the pin 3 of chip IC 1 and the lamps and lanterns L of VCC, diode D1, two poles The anode of pipe D2 connects the pin 2 of capacitance C2, resistance R2, the other end of resistance R1 and chip IC 1, the other end connection of capacitance C1 The other end of capacitance C2, the other end of resistance R2, the anode of diode D3, the other end of lamps and lanterns L, triode V1 emitter, Switch S1, loudspeaker B, 2 inside phototriode of the anode of storage battery E, the cathode of 2 interior light emitting diodes of chip IC and chip IC Emitter, resistance R3 the other end connection 2 interior light emitting diodes of chip IC anode, 2 inside phototriode of chip IC The other end of collector connection resistance R4 and the base stage of triode V1, the base of the collector connecting triode V2 of triode V1 Pole, the emitter connection relay K of triode V2, the other end of the other end connecting valve S1 of relay K, resistance R4's is another The cathode of the collector of end connecting triode V2, the contact K-2 and storage battery E of relay K, the contact K-2's of relay K is another The other end of end connection loudspeaker B.

A kind of 3. LED light short-circuit protector according to claim 2, it is characterised in that the model of the chip IC 1 LM317, chip IC 2 are 4N25 photo-couplers.

4. a kind of LED light short-circuit protector according to claim 2, it is characterised in that the switch S1 is closed button Switch.

5. a kind of LED light short-circuit protector according to claim 2, it is characterised in that the triode V1 and V2 is N Type triode.