Improved LED lamp radiating level suggestion

The reliability of the LED lighting light (life) depends largely on the radiation level, so improve the radiation level is one of the key technologies. Is mainly to solve the chip to produce excess heat through the heat sink, radiator came out, this is a very complex technology problems.

With the development of LED lighting products, there are two kinds of new technology: first, in order to increase the flux tube, the injected current density bigger, as mentioned below, so that the chip generates more heat, the need for cooling. Secondly, a new structure of package, with the increase of LED light source power, the need for multiple power LED chip set package together, such as COB structure, modular fixtures, will produce more heat, heat dissipation structure and need more effective measures, it put forward the new subject for heat dissipation, otherwise it will greatly affect the performance and life LED lamp.

At the moment the LED light heat dissipation and total efficiency is only 50%, there are a lot of energy to become hot. Secondly, LED high current density and modular fixture will have a more centralized heat, the need for good heat dissipation.

In order to improve the heat level we provide the following suggestions:

1), from the LED chip, to adopt new technology, new structure, improve the heat resistance of the temperature of the LED chip, and heat resistance of other materials, which makes the heat dissipation requirements decrease.

2), reducing the thermal resistance of LED devices using the new technology, new structure, package, the selection of thermal conductivity, good heat resistance and new materials, including mixed rubber metal between the adhesive material, fluorescent powder and so on, so that the thermal resistance of /W or less than or equal to 10 DEG C.

3), to reduce the heating, as far as possible the use of heat dissipation material with good heat conductivity, in the design requirements of a ventilation channel better, make the waste heat as soon as possible escape, requirements should be less than 30 DEG C temperature. In addition, to improve the radiating level modular light should be on the agenda.

 4), many methods, such as the use of heat pipe, of course good, but need to consider the cost factor, should be considered in the design of cost problem.

In addition, the design of LED lamps in addition to improve lighting efficiency, light distribution requirements, beautiful appearance, to improve the radiating level, with good thermal conductivity material, has been reported, the radiating body with certain nano materials, increasing its thermal performance 30%. In addition, to have good mechanical properties and sealing, heat radiation body also dustproof, requirements of LED light temperature rise should be small 30 C.