LED illumination luminaries gets saltant development in the near future, LED gets be admissived extensively as the clean illuminant of green environmental protection. LED illuminant service life is long, energy-saving province report, application is simple convenient, use cost is low, in the family consequently illume will receive huge application, company of semiconductor of Ou Silang optics investigated statistic 2008, the whole world is annual volume of shipment of domestic illume lamp holder is 50 billion about.
The technology of LED illuminant is mature with each passing day, lumen of every made of baked clay glow grows quickly, make its year after year decrease successively depreciate. It is with 1WLED illuminant exemple, 2008 spring the price already was 2006 spring the price 1/3, 2009 spring will fall to 1/4 2006.
The huge market of LED green lamps and lanterns and the super seismic sea wave that stabilizing demand of several years of growth continuously will be the consumptive electron market after VCD of afterwards of integrated circuit industry, DVD, mobile phone, MP3!
The superior performance of environmental protection of the tall energy-saving, long life of LED lamps and lanterns, benefit is obtained general accepted.
LED is tall energy-saving: Shed drive continuously, exceed low power comsumption (sheet is in charge of 0.03 tile - 1 tile) changeover of power of light produced by electricity is adjacent 100% , identical illume effect is more energy-saving than traditional light source 80% above.
LED grows life: LED illuminant is called macrobian lamp. Source of solid cold light, epoxy resin is enclosed, there also is the part that become loose inside light system, nonexistent filament glow is burned easily, hot deposit, light declines to wait for defect quickly, service life can be amounted to 50 thousand to 100 thousand hours, grow 10 times above than life of traditional light source.
LED benefit environmental protection: LED is illuminant of a kind of green, environmental protection benefit is much better. There are ultraviolet ray and infrared ray in spectrum, quantity of heat is low and shine without frequency, without radiation, and litter can reclaim, do not contain mercuric element without pollution, cold light source, OK and safe feeling, belong to typical green lighting light source.
Characteristic of LED illuminant job
The VF tension that illume uses LED light source is very low, general VF=2.75-3.8V, IF is in 15-1400mA; Because the output voltage of IC of this LED drive is VFXN or VFX1, IF constant current is in 15-1400mA. The LED light source that LED lamps and lanterns uses has small-power (IF=15-20mA) and high-power (IF>200mA)) 2 kinds, small-power LED is multi-purpose will make lamp of LED fluorescent lamp, adornment, grille tube; High-power LED is used do domestic floodlight, shoot portable lamp of lamp of the lamp, benthic lamp, lamp that wash a wall, street lamp, channel, car to wait. Power LED illuminant is the parts of an apparatus of drive of low voltage, big electric current, the intensity that its give off light is decided by the voltaic size that has shed LED, electric current can cause the attenuation of LED light too by force, electric current can affect the glow intensity of LED infirmly too, accordingly, the drive of LED needs to provide constant current power source, in order to assure the security that high-power LED uses, achieve good glow strength at the same time. In LED illume domain, want body to reveal energy-saving the characteristic with macrobian life, IC of drive of choice good LED is crucial, do not have good drive IC match, LED illuminative advantage shows without the body.
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