The LED provides monochromatic light with a large half-width. Since the energy gap of the semiconductor decreases with the increase in temperature, the peak wavelength emitted by it increases with the increase in temperature, that is, the spectrum is red shifted, and the temperature coefficient is +2 ~3A/. The LED luminous brightness L is approximately proportional to the forward current. As the current increases, the luminous brightness also increases approximately. In addition, the luminous brightness is also related to the ambient temperature. When the ambient temperature is high, the recombination efficiency decreases and the luminous intensity decreases. The high-quality T8LED light tube has a long life (more than 40,000 hours), high brightness (light efficiency is currently 140lm/W and the price can be bearable), which is twice that of ordinary fluorescent lamps, and has a high power saving rate. Common occasions such as factories, workshops, supermarkets, etc. Schools and other occasions can easily achieve a power saving rate of more than 75%. In an underground garage, the use of LED induction lamps can even achieve a power saving rate of more than 90%-92%, and the price is affordable. The cheaper LED tubes for project acceptance are already cheaper than ordinary fluorescent lamps), so at present, in the purchase of new engineering projects and new lamps, they have basically replaced ordinary fluorescent tubes and ordinary T5 fluorescent tubes and become the choice of engineering lamps. But in many occasions, the original ordinary fluorescent lamp bracket is still relatively new, it is a pity to throw away all the replacement LED lamps. At the same time, because there is no need to re-decorate, the original larger fluorescent lamp bracket will leave unsightly marks after being removed, and some users I don’t want to make a big effort to replace all of them. If the original ordinary light tubes can be easily changed to LED light tubes, it will be of great benefit to the popularization of high-quality LED light tubes in various occasions, and it is also the need of an energy-saving society that day It is also an effective and easy-to-implement energy-saving method for companies to increase revenue and reduce expenditure.