12 problems in LED lighting industry

1, LED color problem

The application of a single LED, there is no problem of color, but if the use of a large number of LED or a lamp with multiple LED at the same time, the color problem will come out. First, a group of lamps, if one sees the color of the light is not the same, I would like to have a good mood to discount. Although like LUXEON LED will be divided into eight military region according to the color temperature, and then divided into several areas in each military region, the control in a certain range of color degree big, but the color of the same area with a number of LED there are still differences, but this difference still can not escape the eyes of provocation.

2, LED insulation problem

The insulation refers to the heat sink substrate for the positive and negative poles of LED is not to say that we are the first to find the insulation problem of LED, but at least the big name manufacturers are surprised to our question. So far not solve the fundamental problem, just take remedial measures, such as aluminum substrate insulation (aluminum substrate initially did not have insulation, now almost all do), we may feel that they can not understand, not a single LED insulation, little effect, multiple series is a problem.

3, LED pulse resistance

The problem with the manufacturers are controversial, does exist in the practical application in the main reaction in the cold pulse, the electric moment, a few LED in the cold power instantaneous breakdown or disconnect, I think is not static or high voltage (voltage in the range due to boot).

4, LED light-emitting angle problem

Due to the various manufacturers of LED lens packaging is not the same, even if the same light-emitting angle (nominal angle), the effect is not the same, making the selection of the concentrator is difficult, still can not be universal.

5, LED potential blindness hidden

LED light is too concentrated so that the brightness of the center is strong, so it is easy to hurt people's eyes, although some lighting manufacturers make efforts in this regard, but due to regulatory lag, it is only a person's moral issue.

12 problems in LED lighting industry

6, LED heating problem

In theory, LED not so hot, but due to the current technology is not mature, LED fever is well-known, I do not want to say.

7, LED low efficiency (luminous rate)

At present, the conversion efficiency of the LED is too low (because there is no instrument test, no specific data).

8, LED brightness is not enough

Lack of brightness, so that the current LED in the lighting industry can only act as a supporting role, mainly used for decoration.

9, LED light and life

At present, the mainland or Taiwanese LED produced by light and life is a serious problem, the first not to say, big manufacturers such as LUXEON nominal 100 thousand hours, I am afraid that only they know in your heart, and the heat of solution quality, the drivers are likely to affect the attenuation of LED and life, so it is just a 100 thousand hour selling point!

10, LED power supply problems

Most of the current drive circuit is borrowed from the switching power supply, there are a few lines is designed for the LED driver, but the effect is basically the same, because LED must use DC drive, adopt constant current control, the drive circuit is enormous, not with electronic transformer and theory, and the efficiency is relatively low. 80% is good (single is not up to). In addition, manufacturers for the pursuit of applicability, claiming that a driver can take a ten (just pick one, two... Can...), in fact this is a misunderstanding, although the constant current, initial voltage is too high will often LED death in an instant.

11, LED modeling constraints

Due to the characteristics of LED single side lighting, making the shape of LED lamps received a certain limit.

12, LED price is too high

An imported 1W-3W LED mostly to about $3, but also to more than 10 yuan (poor quality, no intellectual property rights), a LED of about 6 lamps sold to the hands of consumers, almost $1000.