CN104768306A

CN104768306A - Light-operated LED street lamp having electronic heat dissipation function and timed automatic light dimming function

Info

Publication number: CN104768306A
Application number: CN201510197375.6A
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: 2015-04-23
Filing date: 2015-04-23
Publication date: 2015-07-08

Abstract

Provided is a light-operated LED street lamp having an electronic heat dissipation function and a timed automatic light dimming function. The electronic heat dissipation function and the timed automatic light dimming function are the core of the light-operated LED street lamp, so that the light-operated LED street lamp further has the functions of being automatically turned off at daytime and being automatically turned on at night apart from the electronic heat dissipation function and the timed automatic light dimming function. The energy conservation rate of the light-operated LED street lamp is improved by above 25% based on an energy conservation function. The electronic heat dissipation function enables the working temperature of the LED street lamp to be controlled below 50 DEG C, and the service life of the LED street lamp reaches 50 thousands of hours.

Description

The light-operated LED road lamp of a kind of electronic radiation timing automatic light modulation

Technical field

The present invention relates to the light-operated LED road lamp of a kind of electronic radiation timing automatic light modulation.

Background technology

LED street lamp in the market, various in style, the just function singleness of street lamp, all simple with vehement bright operating mode work, can not be with an automatic light meter, more can not electronic radiation, when making street lamp people and Che be 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 that a kind of electronic radiation of the present invention is with an automatic light meter, discloses a kind of semiconductor chilling plate of electronic devices and components that adopts to disperse the most of heat produced when street lamp works, controls 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 automatically, makes street lamp escape safely circuit extra-high pressure after midnight and, to the harm of street lamp, is conducive to the useful life of street lamp.

A light-operated LED road lamp for electronic radiation timing automatic light modulation, its circuit composition is made up of electronic transformer circuit, electronic heat sink circuit, timer circuit, light-operated circuit, constant-current circuit and luminous plaque circuit.

Accompanying drawing explanation

Accompanying drawing is the circuit theory diagrams of the light-operated LED road lamp of a kind of electronic radiation timing automatic light modulation.

Embodiment

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

As shown in drawings, IC1, IC2, C2 form electronic heat sink circuit, IC2 is three terminal regulator, and model is 7812, and voltage stabilizing exports 12V direct current to IC1 working power, IC1 is semiconductor chilling plate, selecting power to be the semiconductor chilling plate of 20W, by regulating the value of R15, making the power of semiconductor chilling plate be about 10W with suitable operating current, and in the annular seal space it being arranged in lamp body, in annular seal space, have semiconductor chilling plate and luminous plaque.

As shown in drawings, IC3, IC10, IC5, IC7 and peripheral circuit composition timer circuit, wherein IC3 is three terminal regulator, selects 7809 models, and the defeated voltage stabilization of 35V is according to appointment counted the direct current supply IC10 working power of 9V by it.The integrated chip of IC10 to be model be CD4060, electronics reset circuit on R14, C11 composition on 12 pin of IC10, when IC10 obtains the moment of electricity, attached position circuit gives 12 pin positive pulse of IC10, and IC10 resets immediately, and in 3 end output low levels, the triode T of positive-negative-positive is driven to become conducting from cut-off, then by R12, R13 dividing potential drop, obtain the voltage being greater than 1.6V, trigger IC5, IC7 conducting.IC5, IC7 are models is TWH8778 chip, when the 5 pin current potentials of IC5, IC7 are lower than 1.6V, and 2, the 3 pin no-outputs of IC5, IC7; When the 5 pin current potentials of IC5, IC7 are higher than 1.6V, 1 terminal potential of IC5, IC7 outputs to 2,3 pin, now jointly provides working power to luminous plaque by IC4, IC6, IC8 tri-groups of constant-current supplies, and LED luminous plaque is with vehement bright operating mode work.R9, C12 on 9,1 pin of IC10 form timing setting-up 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 pin of IC10 automatically, makes triode T become cut-off from conducting.Now, the 5 pin current potentials of IC5, IC7 all end lower than 1.6V, IC5, IC7, and like this, LED luminous plaque is only inscribed for working power by one group of constant-current supply IC4, and street lamp, with secretly bright operating mode work, realizes automatic dimming function.

As shown in drawings, IC9 and peripheral circuit composition light-operated circuit, wherein R5, R7 form capacitance-resistance voltage reduction circuit, single phase alternating current (A.C.) 220V power supply is become about 15V alternating current, the single-phase bridge rectifier giving D7, D8, D9, D10 composition carries out rectification, the direct current of output ripple, then carries out filtering by filter circuit C8, again through both-end voltage regulator circuit D11 voltage stabilizing, the voltage of stable output gives IC9 working power.

R6, R7 composition is light-operated picks up slowdown monitoring circuit, and R6 is photo resistance, and R7 is fixed resistance.On daytime, light irradiates R6, and its resistance diminishes, and causes R7 current potential to raise, and 2, the 6 pin current potentials of IC9 and then raise.When 2, the 6 pin current potentials of IC9 are raised to 2/3Ucc, namely during about 10V, IC9 output low level, Chang Xiaoying pipe TV ends, driver no-output, and the luminous plaque connected does not work, and namely street lamp does not work; At night, dull thread irradiates R6, and its resistance raises, and causes the current potential of R7 to diminish, and 2, the 6 pin current potentials of IC9 and then reduce.When the 2/6 pin current potential of IC9 is reduced to 1/3Ucc, namely during about 5V, IC9 exports high level, field effect transistor VT conducting, and driver exports high level, and the luminous plaque work connected, street lamp is with vehement bright operating mode work.

As shown in drawings, IC3, IC4, IC5 form 3 groups of constant-current supplies, and its model selects 7824, and the LED street lamp driven is with the many circuit connecting modes also of 7 string, and circuitry number in parallel is by the power decision of street lamp.As long as select suitable resistance R2 or R3 or the value of R4, the load current value needed for LED luminous plaque can be met.

As shown in drawings, V is piezo-resistance, and play the overvoltage protection effect of moment in circuit, electrolytic capacitor during C6, strobes in circuit.D4, D5, D6 are rectifier diodes, play isolation and guiding function in circuit.

Claims

1. a light-operated LED road lamp 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, light-operated circuit and constant-current circuit.

2. the light-operated LED road lamp 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 light-operated LED road lamp 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 IC1, IC2, C2, C2 is electrolytic capacitor, and IC1 is semiconductor chilling plate, and power selects 20W/ sheet.

4. the light-operated LED road lamp 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 IC10 and peripheral circuit, the model of IC10 is CD4060, R14, C11 on its 12 pin are electric self-resetting circuits, 9, R9, C12 on 10 pin are timing setting constants, 3 pin are outputs, the control switch circuit of the external two groups of constant-current circuits of 3 pin.

5. the light-operated LED road lamp 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.

6. the light-operated LED road lamp of a kind of electronic radiation timing automatic according to claim 1 light modulation, is characterized in that: light-operated circuit adopts photo resistance for picking up survey electronic component, time street lamp energy automatically turn off the light daytime, night turns on light automatically.