CN103957628A

CN103957628A - LED road lamp capable of radiating through semiconductor cooling piece with power automatically reduced by 60% in timing mode

Info

Publication number: CN103957628A
Application number: CN201410161022.6A
Authority: CN
Inventors: 黄焕珠
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-21
Filing date: 2014-04-21
Publication date: 2014-07-30

Abstract

Provided is an LED road lamp capable of radiating through a semiconductor cooling piece with power automatically reduced by 60% in a timing mode. A timer circuit is used for timing. A high-power aluminum radiating outer shell is used for radiating, and the semiconductor cooling piece is added for neutralizing heat generated by the LED road lamp for radiating. The fact that the temperature of the LED road lamp is in a rated value range is guaranteed, the LED road lamp is high in electricity saving rate, and the LED road lamp is durable.

Description

A kind of timing is from the LED street lamp that subtracts 60% power semiconductor cooling piece heat radiation

Technical field

The present invention relates to a kind of timing from the LED street lamp that subtracts 60% power semiconductor cooling piece heat radiation.

Technical background

LED street lamp is used widely rapidly with its electricity-saving rate height and the strong advantage of durability at present, the LED street lamp just using now, lack timing automatic dimming function, although the lamp housing that is again LED street lamp has adopted aluminum hull to dispel the heat, but during the broiling summer, high-power LED road lamp body temperature is still very high.

Summary of the invention

A kind of timing of the present invention is from the LED street lamp that subtracts 60% power semiconductor cooling piece heat radiation, provide a kind of LED street lamp can timing automatic light modulation, the cold air that can utilize again semiconductor chilling plate to produce dispels the heat to LED street lamp, the heat producing while effectively dispersing the work of LED street lamp, guarantee that LED street lamp is reduced to lamp body rated value scope, is beneficial to LED street lamp durable for a long time.

Timing is from a LED street lamp that subtracts 60% power semiconductor cooling piece heat radiation, and its electric circuit constitute is by capacitance-resistance voltage reduction circuit, current rectifying and wave filtering circuit, timer circuit, semiconductor chilling plate radiating circuit and luminous plaque the electric circuit constitute.

Accompanying drawing explanation

Accompanying drawing is that a kind of timing is from the LED street lamp circuit schematic diagram that subtracts 60% power semiconductor cooling piece heat radiation.

Embodiment

As shown in drawings, capacitance-resistance voltage reduction circuit is comprised of R1, C1, C2 and relay normally open contact IC3, and R1, C1 link are in circuit, and C2 controls by opening contact IC3 by length.C1, C2 are electric capacity of the dacron more than withstand voltage 400V, when the power hour of LED street lamp, according to not affecting road normal illumination, are principle, select C1=C2, and now LED street lamp timing automatic reduces by 50% power; If the power of LED street lamp is large, select C1: C2=4: 6, now LED street lamp timing automatic reduces by 60% power, although reduce by 60% power, because the power of street lamp is large, 40% power has guaranteed the normal illumination of road.

As shown in drawings, the function of rectifier B is alternating current to be become to the direct current of pulsation, and filter L and capacitor C 3 form compound filter circuit, and its effect one is the direct current of pulsation to be become to smoother direct current supply with next stage circuit; The 2nd, utilize between inductor and capacitor idle and intercourse, improve the power factor of LED street lamp.

As shown in drawings, IC2 and peripheral circuit form timer circuit, and external R2, the C5 of 12 pin of IC2 forms electrifying self-resetting circuit, and 9,10, pin is timing setup parameter pin, selects suitable R3, C6 value, can meet the required timing of user.

Timing automatic reduces the process of 60% power: when IC2 obtains electricity, R2, C5 reset to IC2, and in 3 pin output low levels, T is positive-negative-positive triode, the 3 pin output low levels of IC2 make triode T conducting, relay IC3 action, and its normally opened contact IC3 is closed, connect C2 loop, now capacitance-resistance voltage reduction circuit is supplied with the operating current of LED street lamp with load current value.When the time counting of setting then, the 3 pin output high level of IC2.High level makes triode T cut-off, IC3 tripping, and its normally opened contact IC3 disconnects C2 loop, and LED street lamp reduces by 50% or 60% power automatically, with light modulation operating mode, works; High level acts on 11 pin of IC2 by D1, cause IC2 failure of oscillation, till the high level of 3 pin outputs remains to power failure always.

As shown in drawings, IC4 is semiconductor chilling plate radiating circuit, selects the semiconductor chilling plate of 10W left and right power.LED casing of street lamp is selected aluminum hull and glass lamp shade, and lampshade surrounding, with sealing, is isolated from the outside LED luminous element.Like this, the heat neutralization that the cold air that semiconductor produces and LED lamp produce, reaches thermolysis, guarantees that the lamp temperature control of LED street lamp, within rated temperature value, makes LED street lamp durable for a long time.

As shown in drawings, LED is luminous plaque, selects as required connection in series-parallel to prop up way, and it is the chip of 1W that LED selects monolithic power.IC1 is three terminal regulator, can select 7812 voltage-stabiliser tubes.

Claims

1. timing is from a LED street lamp that subtracts 60% power semiconductor cooling piece heat radiation, and its electric circuit constitute is comprised of capacitance-resistance voltage reduction circuit, current rectifying and wave filtering circuit, timer circuit, semiconductor heat-dissipating circuit and circuit of LED.

2. a kind of timing according to claim 1 is from the LED street lamp that subtracts 60% power semiconductor cooling piece heat radiation, and its special card is: C1, C2, R1 are capacitance-resistance voltage reduction circuits, C1, R1 link, and C2 loop is controlled by the normally opened contact IC3 of relay.

3. a kind of timing according to claim 1 is from the LED street lamp that subtracts 60% power semiconductor cooling piece heat radiation, and its special card is: B is rectifier chip, and L and C3 form compound filter circuit.

4. a kind of timing according to claim 1 is from the LED street lamp that subtracts 60% power semiconductor cooling piece heat radiation, and its special card is: IC2 is that timing automatic reduces by 60% power chip, model C D4060, and IC3 is relay.

5. a kind of timing according to claim 1 is from the LED street lamp that subtracts 60% power semiconductor cooling piece heat radiation, and its special card is: IC4 is semiconductor chilling plate circuit, and its power is 10W left and right.

6. a kind of timing according to claim 1, from the LED street lamp that subtracts 60% power semiconductor cooling piece heat radiation, is characterized in that: IC is three terminal regulator circuit, and model is 7812.