CN105050259A

CN105050259A - LED street lamp capable of realizing electronic heat dissipation and timing functions and automatically reducing power by half

Info

Publication number: CN105050259A
Application number: CN201510401912.4A
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: 2015-07-09
Filing date: 2015-07-09
Publication date: 2015-11-11

Abstract

The invention relates to an LED street lamp capable of realizing electronic heat dissipation and timing functions and automatically reducing power by half. An electronic heat dissipation circuit and a timer automatic dimming circuit are organically combined with each other so as to form an integrated body, so that an LED street lamp driver can have with a timing automatic dimming function and an electronic heat dissipation function; with the timing automatic dimming function realized, the street lamp driven by the LED street lamp driver can conserve about 25% of energy based on the energy conservation of the LED street lamp; with the electronic heat dissipation function realized, the working temperature of the LED street lamp can be controlled below 50 DEG C, and the HATIZ theorem of LED lamps can be realized, namely, the service life of an LED is 100000 hours when the working temperature of the LED is below 25 DEG C, and the service life of the LED is 50000 hours when the working temperature of the LED ranges from 25 to 50 DEG C.

Description

A kind of electronic radiation timing is from the LED street lamp subtracting a half-power

Technical field

The present invention relates to the timing of a kind of electronic radiation from the LED street lamp driver subtracting a half-power.

Background technology

LED street lamp popular in the market, its driver functions is single, can not be with an automatic light meter, more can not electronic radiation, causes LED street lamp from always vehement bright to being turned off the light once lighting; Be again the summer in sweltering heat, the temperature in air is very high, causes the working temperature superelevation of LED street lamp.The LED street lamp of such function, 1, do not give full play to the energy-saving efficiency of LED street lamp; 2, " when LED working temperature is below 25 DEG C, useful life is 100,000 hours to be difficult to realize the HATIZ theorem of LED; When 25 ~ 50 DEG C, useful life is 50,000 hours ".

Summary of the invention

A kind of electronic radiation timing automatic of the present invention reduces by half the LED street lamp driver of power, disclose and a kind ofly there is electronic radiation and timing from the LED street lamp driver of function subtracting a half-power, this street lamp driver, driving the control circuit in body, a timing constant is set, in this timing section, street lamp is with vehement bright operating mode work; Then timer counter then, automatic minimizing one half-power, with secretly bright operating mode work, under the prerequisite not affecting road traffic illumination, after making LED street lamp light modulation, its fractional energy savings turn improves more than 50%, improves about 25% than not having the LED street lamp average energy saving of timing automatic light modulation.

Electronic radiation timing is from the LED street lamp driver subtracting a half-power, and its circuit composition is made up of capacitance-resistance voltage reduction circuit, current rectifying and wave filtering circuit, electronic radiation circuit, timer circuit.

Accompanying drawing explanation

Accompanying drawing is the circuit theory diagrams that the timing of a kind of electronic radiation subtracts the LED street lamp driver of a half-power certainly.

Embodiment

As shown in drawings, R1, C1, C2, normally opened relay contact IC5 form capacitance-resistance voltage reduction circuit, and alternating current 220V voltage is reduced some volts and sends to rectifier rectification, wherein C2 is controlled by normally opened relay contact IC5.When establishing C1=C2, when C2 closes, provide operating current by specified current value to LED luminous plaque; When C2 disconnects, providing operating current by the load current value of half to LED luminous plaque, realizing the dimming function from subtracting a half-power.

As shown in drawings, A, L and C3 form rectifier and composite filter, and wherein A is single-phase bridge rectifier, alternating current is become the direct current of pulsation; L and C3 is composite filter, and it is working power that the Rectified alternating current that rectifier exports is become smoother direct current supply next stage circuit.

As shown in drawings, IC1 and peripheral circuit and IC4 and peripheral circuit composition timer circuit, wherein IC1 and peripheral circuit composition high input voltage three-terminal voltage-stabilizing circuit, IC1 to be model be 7812 chip, export the stabilized voltage power supply supply IC4 of 12V for working power with voltage.

IC4 is model is CD4060 chip, R2, C7 on 12 pin of IC4 form electrifying self-resetting circuit, and when IC4 obtains the moment of electricity, 12 pin input a positive pulse, the internal circuit of IC4 is reset, the 3 pin output low levels of IC4, make the triode T2 of positive-negative-positive obtain and conduct, relay IC5 action, its normally opened contact IC5 closes, connect the C2 loop in capacitance-resistance voltage reduction circuit, power circuit provides operating current with specified power to luminous plaque, makes LED street lamp with vehement bright operating mode work.

R3, C8 on 9,10 pin of IC4 form timing setting constant, select suitable numerical value can meet the timing of 4 ~ 6 hours.When setting-up time count down to, 3 pin of IC4 become high level from low level, triode T2 is ended, relay IC5 tripping, its normally opened contact IC5 tripping, disconnects C2 loop, and LED luminous plaque list supplies operating current by the current value in C1 loop, if select C1=C2, the function automatically subtracting a half-power will be realized; When leading to therewith, the high level of 3 pin is applied to 11 pin by D5, makes IC4 internal oscillator circuit failure of oscillation, and keeps its present situation to LED street lamp is turned off the light.

As shown in drawings, R6, D1, D2 and C6 and R7, D9, D10 and C9 are the bidirectional thyristor light adjusting circuits that two groups of functions are identical, and the value of regulating resistance R6 or R7 makes SCR light regulation circuit output voltage at 45V.

As shown in drawings, D3, D4, D7, D8 and D11, D12, D13, D14 are the single-phase bridge rectifier circuit that two groups of functions are identical, it carries out rectification SCR light regulation circuit output AC 45V voltage, it is made to become the direct current of pulsation, then galvanic stackable characteristic is utilized, the output electricity of two groups of rectifiers is superposed, sends to filter circuit C10 and carry out filtering, export the working power of smoother direct current for next stage circuit.

R8, D15, T1, C11, C12, C13 and IC3 form high input voltage three-terminal voltage-stabilizing circuit, its input terminal voltage 45 ~ 48V, IC3 to be model be 7812 chip, capacity is 1A, exports the working power of the stabilized power supply supply electronic heat sink IC6 of DC12V.Described electronic heat sink IC6 is a slice semiconductor chilling plate, and monolithic power is 20W, by regulate operating current, as operating current be 1A time, the power of its electronic heat sink is 12W.

Claims

1. electronic radiation timing is from the LED street lamp driver subtracting a half-power, and its circuit composition is made up of capacitance-resistance voltage reduction circuit, current rectifying and wave filtering circuit, timer circuit, electronic heat sink circuit.

2. a kind of electronic radiation timing according to claim 1 is from the LED street lamp driver subtracting a half-power, it is characterized in that: capacitance-resistance voltage reduction circuit is made up of C1, C2 and R1, the withstand voltage of C1, C2 is more than 400V, capacity is according to the power decision of street lamp, C2 is controlled by the normally opened contact IC5 of relay, when setting C1=C2 value, the power of half is saved in LED street lamp light modulation later again, and average specific does not have the electricity-saving rate of the like product of timing automatic light modulation to improve about 25%.

3. a kind of electronic radiation timing according to claim 1 is from the LED street lamp driver subtracting a half-power, it is characterized in that: current rectifying and wave filtering circuit is made up of single-phase bridge rectifier, capacity is according to the power decision of street lamp, filter circuit forms compound filter circuit by inductance L and electric capacity C, and capacity is also according to the power decision of street lamp.

4. a kind of electronic radiation timing according to claim 1 is from the LED street lamp driver subtracting a half-power, and it is characterized in that: timer circuit is made up of IC chip and peripheral circuit, the model of IC chip is CD4060.

5. a kind of electronic radiation timing according to claim 4 is from the LED street lamp driver subtracting a half-power, it is characterized in that: the working power of timer has high input voltage three-terminal voltage-stabilizing circuit to provide, input voltage is at 45 ~ 48V, and stable output voltage 12V, capacity is 1A.

6. a kind of electronic radiation timing according to claim 1 is from the LED street lamp driver subtracting a half-power, it is characterized in that: electronic heat sink is made up of semiconductor chilling plate circuit, electronic heat sink is arranged in an annular seal space be made up of lampshade, LED luminous plaque and streetlamp housing.

7. a kind of electronic radiation timing according to claim 6 is from the LED street lamp driver subtracting a half-power, it is characterized in that: the structure of annular seal space is; Eyes are towards lampshade direction, and its order is lampshade-aluminum base circuit board-lamp housing, and electronic heat sink is just arranged on the end-position of aluminum base circuit board.