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LED lighting are emitting diode (English light emitting diode) abbreviations, its basic structure is a electroluminescent semiconductor materials, in a fuses shelves, then around sealed with epoxy resin, rise to protect the internal HPVV effects, so the seismic performance is good. LED
Originally used as instruments instructions LED lamp source, then various light color LED in traffic lights and large-scale display can be widely used, produce a good economic benefit and social benefit. With 12 inches of a red traffic light, for example, in the United States was using the long life, low efficiency as the sources of 140 watts incandescent lamp, it produces 2000 lumen white light. After the red filter, light loss 90%, only 200 lumens of the red light. And in the new design lamp, Lumileds company adopted 18 red LED light source, including circuit loss of power consumption, including 14 watts, can produce the same efficacy. Automotive lights is also an important field application LED lights source.
50 years ago people already know semiconductor material can produce light, the basic knowledge of the first commercial diode produces in 1960. Leds core body is by p type semiconductor and n-type semiconductor chip, composed in p type semiconductor and n-type semiconductor, there is a transition zone between called p - n ". In some semiconductor materials into the PN junction with the minority carriers will take extra compound majority carrier in the form of light energy of the energy released, which directly convert light energy. PN junction, minority carriers with reverse voltage to infuse, reason not to shine. This kind of use between energy saving lamp principle called leds made diodes, appellative LED. When it's in a positive working status (i.e. positive voltage), and ends from the LED anode current cathodic, semiconductor crystal flow out to infrared different colors from uv light, the intensity of the light with current relevant. High photosynthetic efficiency, low light failure high power LED tube has been widely used in mining lamp, street lamp, tunnel light, shoot the light, fluorescent lamp and so on many lighting fields, from industry consistent high praise.