Has 12 major problems existing in the high power LED in lighting applications

With the development of LED industry, the proportion of high power LED in lighting applications, but the high power LED in lighting applications is there are a lot of problems, in this, OFweek semiconductor lighting network people inventory resolve the various problems in application of high power LED, with readers. 1, LED color difference problem of a single LED application, basically there is no color difference problem, but if will be a lot of leds to be put into use, or a lamp with multiple leds at the same time, the off color problem appeared. Say a group of lamps and lanterns, first glance if you do not match the color of lamplight, although like LUXEON will be LED by the color temperature is divided into eight major military commands, and then points in each military area command aura several village, a wide range of color difference in a certain degree of control, but with a batch of leds in a same quality still exists difference, and this difference is still can't escape the provocation to the naked eye. The insulation of the 2, LED the insulation problem (here refers to the heat dissipation base slabs leds are negative) dare not to say we were the first to find the LED the insulation of the problem, but at least big manufacturers feel surprise for our question. So far as to still did not solve the fundamental problem, just take remedy measures, such as aluminum plate to deal with the insulation (the original no insulation aluminum plate, are now almost done) may be you feel do not understand. A single LED not insulation, impact is not big, more than series when there is a problem. 3, LED resistance to pulse The problem with the manufacturer is controversial, in I do exist in the actual application, the main reaction on cold pulse, namely on electric moment, a few leds on the cold electric moment of breakdown or disconnect. I don't think it is static or high pressure (boot voltage in the range). 4, the LED light Angle problem Due to the various manufacturers of LED lens assembly is different even the same light Angle (nominal), effect is different also, makes it harder to the selection of condenser cover, still to gm. 5, LED hidden trouble of potential blindness super brightness LED point concentration makes center, so it is easy to hurt people's eyes, though some lighting manufacturers to try in this aspect, but due to the laws and regulations lag, also only is a moral question. 6, LED heat problem In theory, the LED not very hot, but as a result of current technology is not mature, LED fever is well known. 7, LED the low efficiency of LED (light emitting rate) electric conversion efficiency is too low (since there is no test instrument, can't give specific data). 8, the LED brightness Brightness is not enough, make the LED can only act as a supporting role in the lighting industry, mainly used for decoration. 9, the LED light failure and life Now LED light failure and life from the mainland or Taiwan problem is more serious, not much said, first big manufacturers such as LUXEON nominal 100000 hours, and only their own psychological clear, I'm afraid, add heat to solve good bad, drive the matching are likely to affect the LED light failure and life, so is a selling point for 100000 hours. 10, LED drive power supply problems At present most of the driving circuit is from switching power supply to borrow, of course, there are only a few lines is dedicated to the LED driver, but the effect is essentially the same, because the LED dc drive is required, taking constant current control, make the drive circuit is quite large, with electronic transformer, and the efficiency is low, 80% with good (single also reach). In addition, the manufacturer for applicability, claiming a drive to take ten to a casually pick up (one, two,...), in fact this is a myth, though it is constant current, high starting voltage will often LED to death in the moment. 11, LED modelling is limited Because of the emitting characteristics of single LED, LED the modelling of lamps and lanterns is limited by certain. 12, LED the unit price is too high a import 1 w - 3 wled are mostly to about $3, domestic also want to more than 10 pieces (quality is poor, no intellectual property rights) around a level of about six LED lamps and lanterns is selling to the consumer's hands, about 1000 yuan, do you want to buy a color TV set or buy lamps and lanterns, please.