Jiang Wei: LED ceramic heat sink solution is concerned

On May 16, 2014, Foshan Station, the “2014 China LED Lighting Supply Chain Good Product Tour Seminar” organized by Gaogong LED, was a great success. It attracted nearly 150 LED lighting companies from the Pearl River Delta region including the local area.

The Foshan station tour seminar invited Dr. Zhang Xiaofei, Chairman of Gaogong LED, Dr. Shao Pengrui, Technical Director of Jingtai Optoelectronics R&D Center, Zhao Chunbo, Marketing Director of Mingwei Electronics, Wenkong Liang, Director of Overclocking Technology, and Kang Rong Precision Ceramics Research and Development Center.玥, Jiamei era lighting marketing general manager Zhou Shuiming and other guests around the 2014 LED lighting industry transformation and survival development, enterprise optimization supply chain management strategy, packaging new materials, LED drive power, high-power cooling, ceramic LED thermal management solutions, etc. Speech.

As we all know, LED lamps can only achieve stable luminous efficiency and quality under the good heat dissipation design, thereby reducing heat exhaustion and improving the life of products and peripheral components. In recent years, ceramic heat sinks have received wide attention in the industry due to their high insulation (15KV/mm), high thermal radiation (>0.95), high thermal conductivity, excellent electromagnetic compatibility, and thermal cycle stability.

There are three main ways of heat dissipation: conduction, convection, and radiation. The ceramic material itself has a high emissivity (>0.95) and a large microscopic specific surface area, which can promote the heat of the surface of the ceramic heat sink to the air. Jiang Rong, from Rongrong Ceramics Research and Development Center, pointed out at the seminar that the thermal conductivity of air is 0.03W/m·k at 75 °C. If there is no convection, the air conduction heat is very small, and the radiation heat determines the overall heat radiation. Therefore, in this case, ceramic materials have a unique heat dissipation advantage.

In Jiang Yan's view, LED lamps use ceramic heat-dissipating materials instead of metal materials to obtain more stable quality, simplify product system, reduce size, save system cost, and directly metal coating.

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