Do you want to know some Led tube history? here,you may find what you want! !

LED  (light emitting diode), is the basic structure of a electroluminescent materials, in a semiconductor, then fuses shelf round sealed with epoxy resin, namely, so can have solid encapsulated inside the core wire, so the aseismatic performance. LED
Fifty years ago, people have about semiconductor material can produce the basic knowledge of light, 1962, general electric company, HeLun grams of NickHolonyakJr (j) ratnayake developed the first kind of practical application of visible light emitting diode.
Initially the instructions for instrument LED tube light source, then all the traffic lights, LED in large letters shown in the screen shows and widely used with good economic benefit and social benefit. 12 inches of red traffic light, for example, in the United States was using long life and low efficiency of 140 watts incandescent lamp illuminant, it produces a white light of 2000 lumens. The red filter, light loss, only 200 lumens 90% of the red light. But in the new design of the lamp, Lumileds company adopted 18 red LED light source, including loss of power circuit, and can produce the same efficacy. Automotive lights is an important field of application LED light source.

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