Initially, LED was used as an indicator light source for instrumentation, and later LED of various light colors was widely used in traffic lights and large-area displays, resulting in good economic and social benefits. The 12-inch red traffic light, for example, was originally a long-life, low-efficiency 140-watt incandescent light source in the United States, which produced 2000 lumens of white light. After passing through the red filter, the light loss is 90%, leaving only 200 lumens of red light. In the new design, Lumileds uses 18 red LED light sources, including circuit losses, a total of 14 watts of power, can produce the same light effect.
Car signal lights are also an important area of LED light source applications. In 1987, China began to install high brake lights on the car, because the LED response speed is fast (nanosecond level), you can let the driver who follows the vehicle know the driving condition as early as possible, reduce the occurrence of car rear-end accidents.
In addition, LED lights in outdoor red, green, blue full-color display, key link miniature torches and other fields have been applied.
Widely used in: government square, National Day celebration, leisure square, large entertainment square, bustling business center, advertising information release card, commercial street, railway station, waiting room, performing arts center, TV live scene, exhibition venue, concert site and other places.