LED general lighting market will be phased out low voltage LED chip
LED general lighting market has attracted the attention of so many people, but on the following three aspects, first, the market is large enough; Second, the end of this year or early next year, LED general lighting market in the first year of will come, and that LED lighting lamps and lanterns is accounted for more than 10% of the overall lighting lamps and lanterns; Third, with the incandescent lamp, fluorescent lamp and energy-saving lamp market such as GE, philips and OSRAM has been basically a few supplier monopoly is different, the big supplier of LED lighting lamps and lanterns today accounts for only about 10% of the total market of lamps and lanterns of lamps and lanterns, i. e. LED general lighting market is not a monopoly market, everyone have a chance to play in it.
however, today most of the LED chip supplier to an out of danger, because they produce low voltage LED chip today LED general lighting will be more and more difficult to sell into the market. Why is that? Because of the high voltage LED flush, high voltage low voltage LED LED compare two remarkable competitive edge:
first, under the same output power, high voltage LED drive current is much lower than low voltage LED as needed. On a silicon wafer photoelectric high-pressure blu-ray 1 w LED, for example, its pressure drop is as high as 50 v, i. e. it only 20 ma drive current can output power of 1 w, and ordinary positive pressure drop to 3 v 1 w leds, need 350 ma drive current to the output power of 1 w, so the same output power of high voltage LED the dissipation power at work is much lower than that of low voltage LED, which means that the heat dissipation aluminum shell of capital can be greatly reduced.
second, high pressure LED to sharply reduce the AC - The DC conversion efficiency loss. 10 w output power, for example, if use positive pressure drop 50 v 1 w LED, high voltage output can take 2 and 4 series of configuration, four LED series of positive pressure drop is 200 v, that is to say, just from the mains 220 v alternating current (ac) ( 交流) Using the bridge rectifier and drop 20 v. But if we use the positive pressure drop to 3 v low voltage LED 1 w, even 10 together positive pressure drop is nothing more than 30 v, that is to say need to AC mains voltage from 220 v to 30 VDC. As we know, the lower the input and output pressure difference, AC to DC conversion efficiency is higher, visible, such as using high pressure LED, the efficiency of the transformer can get progress greatly, thus can greatly reduce AC - DC switch power losses, the heat consumption reduce and can further reduce cooling shells.
as a result, such as using high pressure LED to develop LED general lighting products, the overall power consumption can be greatly reduced, thus greatly reduce the heat dissipation shell design requirements, such as we used to be thinner and lighter aluminum shell cooling requirements can be satisfied with the LED lamps and lanterns, because heat dissipation aluminum shell of capital is one of the main capital of department of LED lighting lamps and lanterns, aluminum shell capital effectively reduce also means reducing overall LED lighting lamps and lanterns is capital.
so, high voltage LED can bring capital and effectively reduce the weight of the LED lighting lamps and lanterns, but the more important is lowered to the cooling system design requirements, thus effectively cleared the LED lighting lamps and lanterns into the biggest technical barriers of indoor lighting market. Therefore, high voltage LED will dominate the future of the LED general lighting market.