CN106163010A

CN106163010A - A kind of light-operated LED road lamp of pulse-width regulated formula

Info

Publication number: CN106163010A
Application number: CN201610711761.7A
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: 2016-08-22
Filing date: 2016-08-22
Publication date: 2016-11-23

Abstract

A kind of light-operated LED road lamp of pulse-width regulated formula, its circuit composition is improved circuit, filter circuit, light-operated circuit, timer circuit, pulse width modulation circuit and luminous plaque circuit by rectification circuit, power factor and forms, by the organic linking of these circuit, constitute the LED street lamp of a kind of practicality, the most this street lamp has and exceeds 50% than the fractional energy savings of like product, operating temperature is maintained at less than 50 DEG C, and service life is more than 50,000 hours.

Description

A kind of light-operated LED road lamp of pulse-width regulated formula

Technical field

The present invention relates to the light-operated LED road lamp of a kind of pulse-width regulated formula.

Background technology

LED illumination lamp obtains application with the advantage that its electricity-saving rate is high in street lamp field at present, and simply the application of LED street lamp is worked as In, street lamp produces the biggest heat, because heat is transformed by electric energy, and a lot of electric energy of too high thermal losses； The heat being again too high makes LED street lamp produce light decay, makes street lamp damage time serious.

Summary of the invention

The light-operated LED road lamp of the present invention a kind of pulse-width regulated formula, open one both electricity-saving rate are improved than common LED street lamp 50%, make again the operating temperature of street lamp be maintained at less than 50 DEG C, make street lamp realize the TAHIZ theorem of LED: " LED operation temperature exists When less than 25～50 DEG C, service life is 50,000 hours ".

The light-operated LED road lamp of the present invention a kind of pulse-width regulated formula, its circuit composition is improved electricity by rectification circuit, power factor Road, filter circuit, light-operated circuit, timer circuit, pulse width modulation circuit and luminous plaque circuit composition.

Accompanying drawing explanation

Accompanying drawing is the circuit theory diagrams of the light-operated LED road lamp light of a kind of pulse-width regulated formula.

Detailed description of the invention

As shown in drawings, IC2 and peripheral circuit composition light-operated circuit, R15 is photoconductive resistance.By day, light irradiates R15, its resistance reduces, and causes the 2 of IC2,6 foot current potentials to raise, and when 2,6 foot voltages are more than 2/3 supply voltage, 3 feet of IC2 are defeated Going out low level, relay J is failure to actuate, the J not adhesive of its normally opened contact, and LED does not obtains working power, do not works；When The night screen has hung down, The resistance of R15 uprises, the 2 of IC2,6 foot current potential step-downs, when 2,6 foot voltages are less than 1/3 supply voltage, and the 3 foot output height of IC2 Level, relay J action, the J adhesive of its normally opened contact, connect the L loop of alternating current power supply, the operating circuit of LED street lamp obtains power supply Devote oneself to work.Now, the intervalometer timer counter of IC4 starts, its 3 foot output low level, obtains through IC5 anti-phase driving the 5 of IC6,6 Power supply must be triggered, IC6 be model be the analogue relay chip of CD4066,5,6 feet are that two groups of analogue relay are normally opened dynamic Make, after 5,6 feet obtain power supply, two groups of equal adhesives of normally opened relay, connect the 2 of IC3,6 feet and resistance R6, R8 with parallel way The one end being connected, makes IC3 with big dutycycle output, makes LED street lamp be operated in vehement bright operating mode；In the continuous work of LED street lamp Making after the time counting of a setting value arrives, 3 feet of IC4 are become high level output by low level again, make the 5 of IC6,6 ends are by height Level becomes low level, the loop that tripping IC6 Yu R6, R8 are connect；Meanwhile, the high point of IC4 puts down driving the 12 of IC6,13 feet, Make two groups of equal adhesives of normally opened relay, connect the 2 of IC3 with parallel way, one end of being connected with resistance R7, R8 of 6 feet, make IC3 with Little dutycycle output, makes LED street lamp be operated in the brightest operating mode, it is achieved timing automatic dimming function.

As shown in drawings, IC1 is rectification circuit, and its composition is single-phase bridge rectification heap, and alternating current 220V is become pulsation Unidirectional current exports, after being then passed through filter circuit L, C3 filtering, it is thus achieved that the smoother unidirectional current of about 300V works for LED Power supply.

As shown in drawings, C1, C2 and D1, D3 composition power factor improve circuit.Because the direct current of rectifier output Electricity is the unidirectional current of pulsation, and the waveform of its curtage is discontinuous, and the power factor causing load is low, have impact on work The utilization rate of power supply.In order to improve the utilization rate of power supply, in order to improve power factor, introduce power factor and improve circuit, its merit It can be the power factor improving street lamp.

As shown in drawings, IC3 and peripheral circuit composition pulse width modulation controlled output circuit, control point by intervalometer IC4, IC5, IC6 control.Control process is: IC3 be model be the time-base counter chain chip of 555, itself and peripheral circuit form arteries and veins Wide adjustable circuit, is the pulse-width regulated function utilizing IC3, controls different dutycycle output, when i.e. street lamp is just started working, With vehement bright operating mode work；Vehement bright operating mode works continuously one and sets after time counting arrives, by IC4, IC5, IC6, street lamp is vehement Bright operating mode becomes the brightest operating mode, thus realizes timing automatic dimming function.

As shown in drawings, IC4 and peripheral circuit composition timer circuit, IC4 be model be the IC chip of CD4060, IC4 12 feet be a powering up Self-resetting end, just obtained the moment of power supply at IC4,12 feet one positive pulse signal of input, make the inside electricity of IC4 Road resets, and the low level of the 3 foot output lockings of IC4.Electric capacity C13, the resistance R12 composition that 9 feet of IC4,10 feet are connected The timing constant of intervalometer, selects suitable numerical value, can meet required timing.The D9 that 11 feet of IC4 are external, Its function is when inputting a high level, the internal circuit blocking of oscillator of effect IC4, and maintains the statusquo, until work Point source is switched off.

As shown in drawings, D10, D11 ... D_NAnd T forms luminous plaque circuit, D10, D11 and D_NIt is light emitting diode, selects little The luminescence chip of power, circuit is connected by a road series system, and its effect reduces working current value, reduces LED street lamp work Time caloric value, thus improve the fractional energy savings of LED street lamp.T is the power switch controlling LED street lamp work, big by dutycycle of T Little controlling its work, when dutycycle is big, the average working voltage of street lamp is high, and LED street lamp is operated in vehement bright operating mode；Duty Ratio is time little, and the average working voltage of street lamp is low, and LED street lamp is operated in the brightest operating mode, thus realizes dimming function.

As shown in drawings, V is varistor, plays the over-voltage protecting function of moment in circuit；C4, R1 and C8, R4 are Two groups of capacitance-resistance voltage reduction circuits, send rectification circuit after alternating current 220V is reduced some volts；B1, B2 are two single-phase bridge rectification heaps, Unidirectional current alternating current being become pulsation sends to filter circuit；C5 and C9 is two filter circuits, and its function is pulsation Unidirectional current becomes smoother unidirectional current；D4 and D6 is both-end stabilivolt, plays being stable at certain threshold voltage in respective circuit Function；R3 closes C6 composition light interference absorbing circuit, prevents the light such as light or lightning flashes of car at night from making street lamp extinguish.

Claims

1. a light-operated LED road lamp for pulse-width regulated formula, its circuit composition is improved circuit, filtering by rectification circuit, power factor Circuit, light-operated circuit, timer circuit, pulse width modulation circuit and luminous plaque circuit composition；Described rectifier circuit is by single-phase Rectifier forms；Described power factor is connected on the outfan of rectifier circuit, and junction point road below is filter circuit, Shown filter circuit uses L, C compound filter circuit；Described timer circuit is CD4066 by CD4060 chip and model Chip and peripheral circuit composition, with vehement bright operating mode work when its function is to make LED street lamp start working；Work one timing time Between count down to after be automatically brought to the work of the brightest operating mode；Described pulse-width modulation circuit is by the time base circuit that model is 555 and periphery Circuit forms, and changes the working condition of LED street lamp by the dutycycle changing pulsewidth；Described luminous plaque circuit is by small-power group Becoming, circuit is connected by a road and is connected in series mode；Described light-operated circuit, selecting model is 555 chips and peripheral circuit group Become, make street lamp automatically to turn off the light daytime again；Automatically turn on light in the evening, also has anti-tampering bright ripple absorption point road, prevent car light and Thunderbolt flash of light makes street lamp extinguish；Executed by above-mentioned mistake, make this street lamp have and exceed 50% than the fractional energy savings of like product, work Temperature is maintained at less than 50 DEG C, reaches more than ten thousand hours service life.