Luminescence mechanism is the energy of incandescent tungsten light emitting heating and light, and after a fairly long period of heating, tungsten will be aging even blows, now, the life of an incandescent bulb and it has ended up, and the light-emitting diode emitting mechanism It is composed by a special diode structure determined mainly by the PN diode crystal plates, electrodes and optical system components, when the electrode with a positive bias, electrons and holes are injected into the P area and N area, when the non- equilibrium minority carrier and majority carrier recombination, will be in the form of photons of the excess energy into light energy. Its emission process consists of three parts: a forward bias carrier injection, recombination radiation and energy transfer. Thus diode mainly by carriers constantly moving and luminous, aging and blown phenomenon does not exist, its special luminescence mechanism determines its luminous life of up to 5-10 ten thousand hours.

LED lighting we have to recognize that the concept of a single or multiple white LED lighting fixtures used are different. Up to now, domestic and foreign R & D and production of white LED still far short of the requirements of the illumination source. We We should take advantage and play in the development of various types of compact fluorescent lamps in the small world in which the advantages and advanced technologies, seize the opportunity to make a difference in the development of new sources of solid white light LED lighting fixtures in the realization of some of the major faces Problems with compact fluorescent lamps have faced problems have been resolved or are being addressed similar.

1, AC-DC converter circuit mounting luminaire should be adapted to the characteristics of LED current drive

The forward current LED output power required for both a constant proximity, but also have a high conversion rate, in order to ensure safe and reliable operation LED, of course, pay attention to costs.

2, LED lighting reliability

The main factors that affect the reliability of the LED lighting device and said electrical components.

3, heat lamps

Single LED thermal overcome, does not mean heat lamps lighting solutions, along with high-power, large-size, high brightness chip development, cooling LED lighting devices and must be addressed.

The LED's HATIZ Theorem LED operating temperature is below 25 ℃, the service life of 100,000 hours, 25-50 ℃, the service life of 50,000 hours, 50-75 ℃, the service life of 20,000 hours, 75-100 ℃, the service life of 10,000 hours, 100-125 ℃, the life of one thousand hours 5, 125-150 ℃, the service life of 2,000 hours.

4, lamps light color uniformity and optical systems

Since the optical properties due to the special structure of tiny LED unlike incandescent bulbs and fluorescent lamps, as there is white light color unevenness problem. Combined into lighting, the light color uniformity and how? By a number of LED combined into a "second source" of light distribution and LED lamps optical system how to meet the lighting requirements is a complicated systematic project, it is necessary to seriously consider and resolve.