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  Currently,in addition to  the high-power LED applying in automotive lighting,luminous lights,Lcd backlighting,Led road lights and other high-attachment value products,but also can get more profits.However,as the previous ordinary traffic lights and Led lights to replace mature enough time to come,the new highlight tri-color Led traffic lights have a wide range of application.In fact,the price of a set of functional,high-quality Led traffic lights  is very expensive,but because of the important role of traffic light in city traffic,every year a large number of traffic lights need to be updated,and thus leads to a relatively big market,after all,It is also conducive to high profits LED production and design company's development,it is for the entire LED industry will produce good stimulation.
  Led products applying in transportation are mainly red,green,yellow signal indication,digital time display,arrows indicate so on.Product require high-intensity ambinet light during the day when you want to light at night to reduce the number of brightness to avoid glare.Led traffic signals directing light from the light source composed of a plurality of LED , we must consider a number of sources to be the focus of the design and installation of LED 's also have certain requirements , if the installation inconsistency will affect the uniformity of light efficiency light-emitting surface , and therefore design must consider how to avoid such defects , if the optical design is too simple, signal light distribution mainly by LED lights itself perspective to ensure that the requirements of the LED light distribution and their installation requirements are more stringent , otherwise this phenomenon will be very obvious.

  LED traffic lights also have some differences when light and other lights ( such as car headlights , etc. ), though it has the same light intensity distribution requirements. The headlamp light cut line in more stringent requirements . As long as the design of car headlights enough light configuration to the appropriate place , regardless of where the light emitted by the designer can design small subregion of the lens with light area, but also need to take into account the traffic lights throughout when the light emitting surface of the light uniformity of efficiency , it must meet any of the light emitting surface of the work area from the observed signal using the signal , the pattern signals are to be clear, visual effects are to be uniform. While incandescent and halogen light sources emitting lights steady , uniform, but there are high-energy , low- life, easy to produce phantom signal display , color film easy to fade and other defects. LED lights can cut death phenomenon , reducing the light fades so high brightness , low power LED applications in lights , the lights will definitely bring about revolutionary changes in the product .

  LED applications in the transport sector mainly in the following areas:

First, the traffic lights . LED lights with its high brightness , high reliability , low cost , long life and other characteristics, are favored urban traffic management departments.

Second, the highway traffic guidance systems. With the improvement of the standard of highway construction , LED traffic guidance systems have become standard products , the market demand .

Third, urban road traffic induced signs. With traffic congestion in major cities is becoming more serious road traffic guidance LED displays are rapidly growing in various cities .

  LED lights in the application of the following advantages :

1 , monochromatic , with divergence angle

Monochromatic light emitted by the LED , and thus does not require the use of color film to show red , yellow and green color signals ; directional light emitted from the LED , and a certain divergence angle , which can be used instead of the traditional lights aspheric mirror . This feature of LED lights to solve the traditional presence of the phantom ( commonly known as the false display ) and color film fading problems and improve the optical efficiency .

2 , cold light source , low energy consumption

Advantages in saving energy of LED light source is very obvious , one of its remarkable features is the low energy consumption, which in terms of lighting applications is significant .

3 , good reliability, long life

Lights work environment is relatively harsh , cold summer , sun and rain , and thus higher reliability requirements lamps . The average life expectancy is generally lights with incandescent bulbs is 1000h, the average life expectancy is low voltage halogen bulb 2000h, high maintenance costs arising therefrom . In actual use , there have been many LED traffic lights use more than five years, and no damage to the LED . There is a relatively large advantage is halogen bulb , etc. fast response time is less , thereby reducing the occurrence of post accident.

  LED traffic lights , etc. to solve several problems:

1 , high-power LED applications , the advantage of greatly reducing the number of LED 's , but the problem is to be solved and cooling costs .

2 , although the intensity indicator LED traffic lights , electrical indicators and electromagnetic compatibility requirements gradually increase , however , LED lights optical design , circuit design need to be further optimized in order to become the mainstream of traffic signal design .

3 , with the improvement of energy-saving , environmental protection requirements , LED lights will be combined with the popularity of solar energy , but need to solve complex problems and traffic signal control machine .

All in all , LED traffic lights in terms of its development is very rapid, with applications in the transport sector is also very good market prospects have basically an alternative to traditional light sources. Although the market is nearing saturation traffic signal products , but because the LED itself has environmental protection, energy saving, long life and other advantages , LED applications in the transport sector still has a very large space.

 

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