LED downlights are generally used for indoor lighting in shopping malls, offices, factories, hospitals, etc., and they are simple and convenient to install and are loved by people. LED energy-saving downlights inherit all the advantages of traditional downlights, but also increase the advantages of small heat generation, long power saving life, and minimal maintenance costs. The early LED downlights were not accepted by customers due to the high overall cost of LED lamp beads. With the reduction of the price of LED downlight chips and the improvement of heat dissipation technology, a solid foundation has been laid for LED downlights to enter the commercial field.
There are three main parts that determine the life of LED energy-saving downlights: LED lamp beads, LED heat dissipation [shell design], and LED power supply. LED lamp bead manufacturers determine the main life of LED downlights. At present, foreign high-quality chip manufacturers include CREE in the United States, Nichia in Japan, etc., and Taiwanese manufacturer Jingdian (in China generally refers to purchasing Jingdian LED chips to get the most cost-effective products) Most of the unpackaged products are produced in China by Taiwan factories or cross-strait packaging factories), Everlight, etc. Mainland manufacturers include Sanan Optoelectronics, Yingrui Optoelectronics, etc.
Generally speaking, high-quality LED energy-saving downlight manufacturers will use high-stable and high-power LED chips recognized in the market. The lamps made in this way have high natural brightness and long life, but the price is not cheap. The chips made by Taiwanese manufacturers also have long life, but the price is relatively low, which can basically be accepted by customers in the Chinese local market. Chips in China's local market have a short lifespan and a large light decay, but the lowest price has become the first choice for a large number of small manufacturers to compete for prices. What kind of LED lamp beads and LED chips are used also directly determines the positioning of LED downlight manufacturers and the social responsibility presented in the industry.
The LED power supply is the heart of the LED downlight, which has a great impact on the life of the LED downlight. Generally speaking, LED downlights are powered by 110-220V, and the domestic market in China is powered by 220V. Due to the short development time of LED lights, the country has not yet set the standard for its power supply, so the LED power supply in the market is uneven, full of phenomena, a large number of low PF values, and it is impossible to flood the market with EMC power supply. The life of the power electrolytic capacitor also directly determines the life of the power supply. Because everyone is sensitive to price, they try to reduce the cost of the power supply, resulting in the low conversion power of the LED power supply and the short service life. lamp". LED downlight manufacturers
The heat dissipation design of LED energy-saving downlights also has a significant impact on its life. The heat of the LED is conducted from the lamp beads to the internal PCB and then exported to the shell, and then the shell is convection or conducted to the air. The heat dissipation of the PCB should be fast enough, the heat dissipation performance of the thermal grease should be good enough, and the heat dissipation area of the casing should be large enough. The reasonable design of several factors determines that the PN junction temperature of the LED lamp should not be higher than 70 degrees during normal operation, so as to ensure that the LED light The chip is at normal working temperature and will not cause light decay due to excessive temperature.
With the rapid development of LED downlight technology, a considerable number of responsible manufacturers have gradually realized the importance of quality. Only accurate quality products can impress customers to replace traditional light sources and relieve their worries.
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