[Text / high-tech LED reporter Gao Jinyu] "High light efficiency, high cost performance" has always been the direction of the LED industry, and LED lighting products are a systematic product, "light channel, electrical channel, hot channel" is the key factor .
During the operation of the LED lamp, less than 20%-30% is converted into light energy, and about 70%-80% of the energy is converted into heat energy. If this part of the heat energy can not be dissipated in time, the heavy light will cause the light source to burn out, and the light will also cause the junction temperature of the chip to rise, the lifespan to decrease, and the luminous flux to decrease. Therefore, when doing LED lighting, it is necessary to choose a reasonable radiator.
Heat dissipation not only allows the light source to dissipate heat, but also allows the power supply to dissipate heat. Cai Ming, manager of the Stewart Optoelectronics Product Management Department, said that as a result of the comprehensive consideration of the application of the radiator, "We have comprehensively evaluated the performance, price, transportation, installation and other factors of the heat dissipation material to select the most suitable radiator."
At present, the main heat-dissipating materials on the market are aluminum, plastic-clad aluminum, plastic-clad ceramics, plastics and ceramics. For the choice of heat-dissipating materials, Cai Ming said that various materials have their own advantages and limitations, mainly based on the characteristics and requirements of the lamps. Make a choice, "If you use a non-isolated power supply, you should consider the safety problem, and choose plastic aluminum; the heat sink should match the performance of the whole luminaire, and the heat can not be the short board of the luminaire."
Since the beginning of this year, the strong demand for LED lighting terminal market has also driven the rapid growth of market demand for lighting and cooling kits.
At present, there is no unified market access standard in all aspects of the domestic LED lighting industry, which is in a mixed state, and the heat sink is even more so. The Kang Rong Cup National Heatsink Design Competition held on November 6th by Kang Rong R&D Center Director Tang Haihong “The launching ceremony said: “The purpose of the heat sink design competition is to remind the LED lighting industry to pay attention to the safety of the radiator and make substantial improvements to the performance of the radiator.”
Dr. Zhang Xiaofei, a senior engineer, said that from the recent LED lighting market test results of high-tech LEDs, the lamps with quality problems generally have poor heat dissipation. "It is imperative to do a good job in the quality of LED radiators and improve the performance of LED lamps." Zhang Xiaofei pointed out that Gaogong LED has undertaken the Kang Rong Cup National Heat Buffer Design Competition, which is also a good example for the industry.
The “2013 Kangrong Cup National Heatsink Design Competition” was officially launched in November 2013 and ended in May 2014. The whole process is divided into four stages. Since the launch of the competition, it has received strong support and active participation from the industry. In the hot registration stage.
The first stage (2013.11.6-2014.3.31): Entries registration → Produce candidate list
The second stage (2014.4.01-2014.4.30): professional jury evaluation → 10 selected works publicity
The third stage (2014.05): on-site awards → awards + trophies + plaques
The fourth stage (2014.06.01-06.31): Promotion → All-round promotion of the winners
Awards:
1, first prize, a prize of 30,000 + Kang Rong Cup design trophy and certificate
2, second prize, two prizes, 10,000 + Kang Rong Cup design trophy and certificate
3, third prize three prizes 5000 + Kang Rong Cup design trophy and certificate
4. Encourage the prize four prizes 2000
