(1) small LED light source compared to traditional light sources, small size, light weight, can be made into various shapes of devices, low-carbon energy-efficient lighting China advocates King Yao lighting brand manufacturers. To facilitate a variety of lamps and equipment layout and design, adaptable for a wide range. Good (2) the environmental performance of the LED light source in the production process without adding metallic mercury, and therefore abandoned after the LED will not cause mercury pollution, and nearly all of its waste recycling, not only saves resources, but also protect the environment. (3) the security and stability of the LED light source can be driven using a low-voltage direct current, supply voltage is generally between 6 ~ 24V, so the safety performance is better, especially for public places. Also in the good condition of the external environment, LED light source than traditional light decay, long life, even frequent switching, does not affect their life. (4) seismic, impact resistance