Where is the LED information indicator used?

LED is a traditional semiconductor light-emitting device, which is widely used for signal indication, digital and graphic display in electronic and electrical equipment. Due to technical reasons, the light output of LED is low, and there are few kinds of colors that can be displayed, and monochromatic light is the main color, which greatly limits the wider application of LED. However, in recent years, some famous LED manufacturers have successfully developed new high-efficiency LEDs, which can be used for outdoor signal equipment, such as automobile anti-fog lights, automobile high-position brake lights, toll crossing lights, road construction area signs, road traffic lights and so on. Among them, the application of LED in road traffic lights (hereinafter referred to as traffic lights) is the most noticeable. In recent years, due to the rapid development of LED technology, some cities in China, such as Beijing, Shanghai, Qingdao, Wuxi, etc., have gradually begun to try to use LEDs instead of incandescent light sources as light sources. The use range of LED signal lamp is obviously expanded. ?

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