CN201886633U - LED (light emitting diode) traffic signal lamp - Google Patents

The utility model discloses an LED (light emitting diode) traffic signal lamp, comprising a shell. An aluminium substrate is arranged at the rear part of the shell and is provided with a large-power high-brightness LED, and a lens and a light-transmitting panel are arranged in front of the LED. The technical scheme adopts single large-power high-brightness LED as a light source, and by focusing and scattering processing of the optical lens, the optical performance of the LED traffic signal lamp can conform to the traffic signal lamp used for replacing the original arrangement of a plurality of LED matrixes.

A kind of LED traffic lights

Technical field

The utility model belongs to the traffic lights field, particularly relates to a kind of LED traffic lights.

Background technology

In recent years, new material, new technology constantly are applied in the road traffic field, and light emitting diode (LED) is obvious to all especially in the widespread use in road traffic field.China part cities in 1999 begin the road traffic signal lamp of led light source on probation, and from 2000 so far, domestic many big or middle cities begin the road traffic signal lamp of large-scale application led light source.The light source of LED road traffic signal lamp is made up of a lot of LED, is arranged in corresponding pattern by the arrangement mode of certain rule, so this series products is not pointolite but an area source.The light source of LED road traffic signal lamp is made up of the led array that series parallel circuits connects, and is operated in constant current state, therefore can think that the light-emitting area of light source is uniform.

But, adopt led array as the traffic lights of light source have the cost height, energy consumption is big, the visual angle is less than normal, circuit system is complicated, brightness decay is fast, indivedual LED damages influence and puts in order problems such as lamp use.Now,, reduce the thermal impedance between LED node and pin along with the development of high-power LED encapsulation technology, package casing is made flat, thereby by shortening the distance between node and the pin, shorten the distance of transmission.Simultaneously, the diameter of down-lead bracket is bigger, pin increases, and use heat-conductive characteristic material preferably, and heat is come out quickly, use the high temperature resistant epoxy resin of energy, high temperature and heat dissipation problem have been solved, therefore can utilize large chip to encapsulate, cause its working current to be increased to 350mA, 700mA even 1000mA by general 20mA, its power can reach 1w, 3w even 5W.

The utility model content

In order to solve above-mentioned technical matters, the purpose of this utility model provides a kind of LED traffic lights, adopt single LEDs as light source, scioptics are spared optical processing to emergent light, have that energy consumption is low, the visual angle is big, brightness constancy, colourity evenly, characteristics such as simple, the low cost of manufacture of system stability, circuit, long service life.

To achieve the above object, the utility model has adopted following technical scheme:

A kind of LED traffic lights comprise shell, and described shell rear portion is provided with aluminium base, and aluminium base is provided with a high-power highlighted LED, and the LED front is provided with lens and light penetrating panel.

The incidence surface of said lens is a concave surface, and the exiting surface of lens is a convex surface.

As preferably, above-mentioned shell front portion is extended with to hide prolongs.

The utility model adopts single high-power highlighted LED as light source owing to adopted above technical scheme, focuses on and the scattering processing by optical lens, and its optical property is met fully in order to substitute the traffic lights of many pieces of original LED arranged.Its feature is: 1) because the radiation shape visual angle of high-power LED encapsulation structure is very wide, need the most of light change direction by the substrate outgoing unlike general LED, so optical efficiency is higher.2) owing to adopt single great power LED, can not produce original many LED signal lamp because the irregular phenomenon of hot spot appears in one or a string LED inefficacy, so great power LED signal lamp colourity is more even, optical effect is better.3), therefore use the power supply of branch road constant current easily because great power LED signal fluorescent tube number is few, and branch road is few; Also have, allow working current bigger, be subjected to the Current Control influence of fluctuations little, less to the dependence that power supply is accurately controlled, so long service life.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is an optical schematic diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is made a detailed explanation.

Embodiment 1: