LED lamps bulbs are small, light-weight, epoxy-encapsulated, withstand high mechanical shocks and shocks, are not broken easily, and have a long cycle of brightness decay so their lifespan can be as long as 50,000-100,000 hours, far beyond the traditional 1,000 hours of tungsten bulb and 10,000 hours of fluorescent tube. As the use of LED lamps up to 5 to 10 years, not only can significantly reduce the cost of lamp replacement, but also because it has a very small current can drive the light of the characteristics of the same lighting effects, the power consumption is only One half of fluorescent tubes, so LED also has the advantages of energy saving and energy saving. However, some of the LED technology is still not enough, so the shortcomings of the initial use of lamps include poor quality of light (color rendering, consistency, color temperature), heat dissipation is not easy, and the price is high, of which improper cooling, will Resulting in the brightness of LED lamps and circuit components accelerate the decay of life. Manufacturing technology by leaps and bounds, the above shortcomings, including the LED's thermal resistance gradually decreased, light quality is also improving. In 2008, the luminous efficiency of LED white light has been raised to 100 Lm / W, except for LED white luminescence. The luminous efficiency of LED warm white light is expected to increase from 70 Lm / W to 100 Lm / W in 2010. Compared with other general purpose light sources, the luminous efficiency of the LED is obviously getting better because the tungsten bulb is about 15 Lm / W, the fluorescent fluorescent lamp is about 45-60 Lm / W, and the HID lamp is about 120-150 Lm / W.