CN104717809A

CN104717809A - Electronic-heat-dissipated timed-automatically-dimmed LED (Light Emitting Diode) street lamp driver

Info

Publication number: CN104717809A
Application number: CN201510173387.5A
Authority: CN
Inventors: 黄焕珠
Original assignee: Shangsi County Dongdong Electronic Science & Technology Co Ltd
Current assignee: Shangsi County Dongdong Electronic Science & Technology Co Ltd
Priority date: 2015-04-14
Filing date: 2015-04-14
Publication date: 2015-06-17

Abstract

The invention relates to an electronic-heat-dissipated timed-automatically-dimmed LED (Light Emitting Diode) street lamp driver. According to the electronic-heat-dissipated timed-automatically-dimmed LED street lamp driver, electronic heat-dissipating and timed automatically-dimming functions are taken as a core, and an LED street lamp can have a timed automatically-dimming function and an electronic heat-dissipating function when the driver is connected with an LED light emitting board; the fractional energy saving of the LED street lamp is increased by over 25% based on energy saving; the working temperature of the LED street lamp is controlled to be not greater than 50 DEG C during electronic heat-dissipating, so that the service life of the LED street lamp can reach 50,000 hours.

Description

The LED street lamp driver of a kind of electronic radiation timing automatic light modulation

Technical field

The present invention relates to the LED street lamp driver of a kind of electronic radiation timing automatic light modulation.

Background technology

LED street lamp driver in the market, various in style, the just function singleness of driver, be all simple driving LED street lamp with the operating mode work of vehement bright illumination, can not be with an automatic light meter, more can not electronic radiation.When making street lamp people and vehicle are all rare on road in the second half of the night, street lamp is vehement bright work still, is obviously the waste on an electric energy; Be again the summer in sweltering heat, the temperature of air is very high, and when street lamp does not have an electronic radiation, the temperature of lamp body is very high, makes LED street lamp produce light decay, can burn out LED street lamp time serious.

Summary of the invention

The LED street lamp driver that a kind of electronic radiation of the present invention is with an automatic light meter, a kind of semiconductor chilling plate of electronic devices and components that adopts is disclosed to disperse the most of heat produced when street lamp works, control the working temperature of street lamp below 50 DEG C, ensure that LED street lamp can be durable for a long time; Again adopt timer circuit, when LED street lamp is started working, with vehement bright operating mode work, after continuous operation timing, automatically the power of street lamp is reduced about more than 50%, ensureing that under the prerequisite not affecting road traffic illumination, make LED street lamp on energy-conservation basis, improve the electric energy of 50% again, average specific does not have LED street lamp with an automatic light meter to improve the fractional energy savings of 25%; Also have by after with an automatic light meter, the operating voltage of LED street lamp reduces about 3V voltage automatically, LED street lamp is escaped safely after midnight circuit extra-high pressure to the harm of street lamp, be conducive to the useful life of street lamp.

A LED street lamp driver for electronic radiation timing automatic light modulation, its circuit composition is made up of electronic transformer circuit, electronic radiation circuit, timer circuit and constant-current drive circuit.

Accompanying drawing explanation

Accompanying drawing is the circuit theory diagrams of the LED street lamp driver of a kind of electronic radiation timing automatic light modulation.

Embodiment

As shown in drawings, R1, C1, D1, D2, D3 form electronic transformer, and alternating current 220V is become about 35 volts of direct currents, and D1 is half-wave rectifier, and C1 is filter.

As shown in drawings, IC9, C5, IC6 form electronic heat sink circuit, and IC9 is three terminal regulator, model is 7812, and voltage stabilizing exports 12V direct current to IC6 working power, and IC6 is semiconductor chilling plate, select power to be the semiconductor chilling plate of 20W, and it is arranged in the annular seal space in lamp body.

As shown in drawings, IC1, IC2, IC7, IC8 and peripheral circuit composition timer circuit, wherein IC7 is three terminal regulator, selects 7809 models, and input about 35 volts of voltage stabilizations are counted the direct current supply IC8 working power of 9 volts by it.The integrated chip of IC8 to be model be CD4060, R5, C7 on 12 pin of IC8 form electrifying self-resetting circuit, when IC8 obtains the moment of electricity, reset circuit gives 12 pin positive pulse of IC8, and namely IC8 resets, and in 3 end output low levels, the triode T of positive-negative-positive is driven to become conducting from cut-off, then by R9, R10 dividing potential drop, obtain the voltage of serious offense 1.6V, trigger IC1, IC2.IC1, IC2 are models is HWH8751 chip, when the 5 pin current potentials of IC1, IC2 are lower than 1.6V, and the 3 end no-outputs of IC1, IC2; When the 5 pin current potentials of IC1, IC2 are higher than 1.6V, 1 terminal potential of IC1, IC2 outputs to 2,3 pin, namely jointly provides working power to LED luminous plaque by IC3, IC4, IC5 tri-groups of constant-current supplies, and LED luminous plaque is with vehement bright operating mode work.

R6, C8 on 9,10 pin of IC8 form timing setting time constant, timing as setting is 6 hours, then at the street lamp continuous operation time counting of 6 hours then, timing control circuit exports high level at 3 ends of IC8 automatically, triode T is made to become cut-off from conducting, now, the 5 pin current potentials of IC1, IC2 all end lower than 1.6V, IC1, IC2, like this, LED luminous plaque only provides working power by one group of constant-current supply IC3, and street lamp, with secretly bright operating mode work, realizes automatic dimming function.

As shown in drawings, IC3, IC4, IC5 form 3 groups of constant-current supplies, and its model selects 7824, as long as select suitable resistance R2 or R3 or the value of R4, can meet the load current value needed for LED luminous plaque.

As shown in drawings, V is piezo-resistance, plays transient overvoltage protective effect in circuit, and C9 is electrolytic capacitor, strobes in circuit.D4, D5, D6 are rectifier diodes, play isolation and guiding function in circuit.

Claims

1. a LED street lamp driver for electronic radiation timing automatic light modulation, its circuit composition is made up of electronic transformer circuit, electronic radiation circuit, timing automatic light adjusting circuit and constant-current circuit.

2. the LED street lamp driver of a kind of electronic radiation timing automatic according to claim 1 light modulation, it is characterized in that: electronic transformer circuit is made up of D1, D2, D3, R1, C1, D1, D3 are rectifier diodes, and D2 is unidirectional thyristor, and C1 is that electrolytic capacitor is for filtering.

3. the LED street lamp driver of a kind of electronic radiation timing automatic according to claim 1 light modulation, it is characterized in that: electronic heat sink circuit is made up of three terminal regulator IC9, C5, IC6, C5 is electrolytic capacitor, and IC6 is semiconductor chilling plate, and power selects 20W/ sheet.

4. the LED street lamp driver of a kind of electronic radiation timing automatic according to claim 1 light modulation, it is characterized in that: timing automatic light adjusting circuit is made up of IC8 level peripheral circuit, the model of IC8 is CD4060, the extraneous electrifying self-resetting circuit of its 12 friendship, 9, R6, C8 on 10 pin are timing setting number of fields, 3 pin are outputs, the control switch circuit of the external two groups of constant-current circuits of 3 pin.

5. the LED street lamp driver of a kind of electronic radiation timing automatic according to claim 1 light modulation, it is characterized in that: constant-current circuit is made up of the circuit of three groups of constant current value, three groups of constant-current circuits are all connected in series a rectifier diode at output, its role is to guide and buffer action.