CN103428942A

CN103428942A - LED street lamp with double power saving effect

Info

Publication number: CN103428942A
Application number: CN2012101617974A
Authority: CN
Inventors: 黄焕珠
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-23
Filing date: 2012-05-23
Publication date: 2013-12-04

Abstract

Provided is an LED street lamp with the double power saving effect. A circuit of the LED street lamp comprises a main circuit composed of a bidirectional SCR and an LED lamp and an auxiliary circuit composed of a turn-on circuit, a lamp socket voltage detection circuit, a timing circuit and a voltage/ light regulation circuit. The double power saving effect is achieved by the following effective measures: the characteristic that the conduction angle of the bidirectional SCR can be regulated to be both large and small is utilized, when the traffic is heavy, the LED street lamp is controlled to work in a large luminance state, and when pedestrians and vehicles are few after midnight, a timer outputs trigger control signals to start the voltage/light regulation circuit to greatly reduce the luminance of the LED street lamp. Therefore, on the basis of the energy saving effect of the LED street lamp itself, considerable electric energy is further saved by reducing the luminance of the lamp, and consequentially the double power saving effect is achieved.

Description

The LED street lamp of a kind of pair of power saving

Technical field

The present invention relates to the LED street lamp of a kind of pair of power saving.

Background technology

According to relevant survey data, China's micropolis after 11 o'clock of night, big and medium-sized cities after 2 of zero mornings, rare pedestrian and vehicle on road.Still keep higher lamp illuminance on the road of this low magnitude of traffic flow, obviously there is no need.From this period until zero 6 o'clock of morning, the power-economizing method that the city of the domestic overwhelming majority and area have adopted street lamp to turn off the light every small cup, disadvantage wherein is self-evident-and it has caused the pavement light illuminance inhomogeneous, bury hidden danger to public security and traffic safety, and can not avoid the impairment of the rising of line voltage after midnight to the street lamp life-span.

Summary of the invention

The LED street lamp of a kind of pair of power saving, the design of its design is: busy period at road traffic, control street lamp and keep stronger illumination, when the rare period of pedestrian, vehicle of road arrives, by a positive pulse signal that is greater than 1/3 second of timer circuit output, by this signal function pressure regulation (light) circuit, trigger bidirectional thyristor SCR by the output of pressure regulation (light) circuit again the LED street lamp is done to pressure regulation (light) operation, by the illumination decrease of street lamp, allow the illumination of street lamp reduce by 30% left and right than peak hours/period.

The LED street lamp of a kind of pair of power saving, its circuit structure is comprised of main circuit and auxiliary circuit two parts.Main circuit is to consist of a bidirectional thyristor SCR and LED lamp; Auxiliary circuit is comprised of 4 parts such as the circuit of turning on light, socket voltage detecting circuit, timer circuit and pressure regulation (light) circuit of LED street lamp.

A kind of two LED street lamp of economizing electric energy, the meaning of its pair of power saving is: on the energy-conservation basis of LED street lamp itself, the characteristic of utilizing again the conduction angle aperture of bidirectional thyristor SCR to regulate, controlled the operating current of bidirectional thyristor SCR by circuits, i.e. busy period at road traffic, by control circuit by the conduction angle regulation of bidirectional thyristor SCR in larger aperture position, allow bidirectional thyristor SCR flow through sufficient electric current supply LED street lamp, make the LED street lamp that stronger illumination be arranged; And the rare people of car lacks the period in the second half of the night, by the time of timer, set, play the beginning timing quarter of lighting at street lamp, when setting-up time then, by a positive pulse signal that is greater than 1/3 second of output circuit output of timer, by this pulse signal effect pressure regulation (light) circuit, make pressure regulation (light) circuit output control signal trigger bidirectional thyristor SCR the conduction angle aperture is reduced, reduce the operating current of LED street lamp, thereby reduce the illumination of LED street lamp.The operating current of LED street lamp has reduced, and has directly reduced the power consumption of LED street lamp, by reducing LED street lamp illumination after midnight, makes again the LED street lamp further improve energy-saving efficiency, has reached the effect of two power savings.

The accompanying drawing explanation

Accompanying drawing is the circuit theory diagrams of the LED street lamp of a kind of pair of power saving.

Embodiment

As shown in drawings, bidirectional thyristor SCR and LED street lamp form main circuit.During main circuit work, bidirectional thyristor SCR, can open large or open little only with the current flow valve of adjusting just as one.Utilize the adjustable function of bidirectional thyristor SCR, the LED street lamp is operated in the working condition that can regulate illumination.

As shown in drawings, the circuit of IC4 and peripheral circuit is the circuit of turning on light, and IC4 is the time base chip that model is NE555, and the capacitor C 14 on its 6 pin, rigidly connect logical moment at power supply L, N, the characteristic that can not suddenly change according to the voltage at electric capacity two ends.Now, the 6 pin current potentials of IC14 are about zero, cause the 3 pin output high level of IC14, and its signal outputs to 6 pin of IC2 by D8.As long as choose the value of IC14, allow the time that the 3 pin output high level of IC14 maintain be less than 1/3 second, IC2 is just in its 8 pin output Trig control signal effect bidirectional thyristor SCR conducting, and power supply just provides operating current from bidirectional thyristor SCR to the LED street lamp, and the LED street lamp is started working.

As shown in drawings, IC3 and D1, R8, R9, C9 form LED street lamp socket voltage detecting circuit, and IC3 is the mains switch chip that model is TWH8778, and D1, R8, R9, C9 are resistance series connection bleeder circuits.When the LED street lamp quits work, the socket voltage detecting circuit and then quits work.After the LED street lamp obtains electricity and devotes oneself to work, the socket voltage detecting circuit automatically and then the voltage of socket detected.Regulate the value of R9, make LED street lamp socket voltage when load voltage value is following, the 5 pin current potentials of IC3 are lower than 1.6V, and now, 2,3 pin of IC3 do not have Voltage-output; When the socket voltage of LED street lamp surpasses rated voltage, the 5 pin current potentials of IC3 will be greater than 1.6V, and at this moment, 2,3 pin of IC3 just have Voltage-output, the voltage of its output is delivered to 6 pin of IC2, and start pulse signal is controlled in effect IC2 output makes bidirectional thyristor SCR do pressure regulation (light) operation.

As shown in drawings, timer is a long timer circuit, and sampled signal is regularly synchronizeed with the working power of LED street lamp.When the LED street lamp is started working, be that timing starts, setting the street lamp continuous operation 5 hours is the starting time of pressure regulation (light).As the dusk 7:30 of every day divides starting point bright LED street lamp, zero morning 12:30 be divided into starting time of street lamp pressure regulation (light).The starting time of pressure regulation (light) then, a positive pulse signal that is greater than 1/3 second of output circuit output of timer, then positive pulse signal is delivered to 6 pin of IC2 by D9, cause the 8 pin output control signals of IC2 to trigger bidirectional thyristor SCR, the illumination of LED street lamp is significantly turned down, allow the LED street lamp turn down in approximately 70% brightness from vehement bright illumination state, so just realize that the LED street lamp is on original energy-conservation basis, save again the part electric energy by reducing its illumination, reached the energy-saving efficiency of two power savings.

As shown in drawings, inductance L 1, L2 and capacitor C 2, C13 form the compound filter circuit, and D4, D8 and D9 play guiding and the effect of isolation high level signal in circuit, and V is piezo-resistance, in circuit, shields.

Claims

1. the LED street lamp of two power savings, it is characterized in that: the LED street lamp of two power savings is comprised of main circuit and auxiliary circuit two parts.

2. the LED street lamp of a kind of pair of power saving according to claim 1, it is characterized in that: main circuit is comprised of a bidirectional thyristor SCR and LED street lamp.

3. the LED street lamp of a kind of pair of power saving according to claim 1, it is characterized in that: auxiliary circuit is comprised of 4 parts such as the circuit of turning on light, timer circuit, socket voltage detecting circuit and pressure regulation (light) circuit.

4. the LED street lamp of a kind of pair of power saving according to claim 3, it is characterized in that: the circuit of turning on light is comprised of IC4 and peripheral circuit thereof, and IC4 is the IC chip that model is NE555.

5. the LED street lamp of a kind of pair of power saving according to claim 3, it is characterized in that: timer circuit is by long-time timing device the electric circuit constitute.

6. the LED street lamp of a kind of pair of power saving according to claim 3 is characterized in that: the socket voltage detecting circuit is comprised of resistance series connection bleeder circuit D1, R8, R9, C9 and IC3, and IC3 is the mains switch chip that model is TWH8778.

7. the LED street lamp of a kind of pair of power saving according to claim 3, it is characterized in that: pressure regulation (light) circuit is comprised of IC2 and peripheral circuit thereof, and IC2 is special-purpose pressure regulation (light) the IC chip that model is NB7232.