1 led overview
Llighting (LED Emitting Diode) light Emitting Diode, is a solid light-emitting semiconductor devices, it is the use of solid semiconductor chip as a luminescent material, through the carrier in the semiconductor photon emission caused by the compound gives off excess energy between, directly from red, yellow, blue, green, blue, orange, purple, white light, LED lighting products are created using LED as light source lighting appliances. The current global energy shortage concerns rise again under the background of the energy saving is one of the important problems we face the future, in the lighting field, the application of LED products is attracting the attention of the world, the 21st century will enter a new lighting source era represented by the LED. LED is known as the fourth generation of lighting source or green light source, energy saving, environmental protection, long life, small volume etc, can be widely used in all kinds of instructions, display, adornment, back light, general lighting and urban night scene, etc.
2 led lights
Usually according to different types of pins, leds can be divided into G4, G5.3, G9, E12 at 11:45, E17, B15D, R7S, GU10, etc. In general, the letters on behalf of the lamp holder interface type, and the number represents the inner diameter or size, for example: the G4 G represents the lamp holder for plug-in, 4 indicates two pins center distance to 4 mm.