LED street lights are now more popular lighting equipment, but there are also some problems that we need to think about, such as the temperature problem of long-term illuminated lED street lights, as well as heat dissipation problems! Today, Xiaobian will share with you on this topic: the program and process of LED street heat dissipation?

LED life and materials

The relationship between LED junction temperature and luminous flux and life, based on the working characteristics of high-power LED, the level of junction temperature is directly related to the size of luminous flux and the length of service life. The primary heat dissipation design of the LED package is determined by the process of the LED production stage. It is mainly composed of the thermal design inside the chip and the thermal design of the package, and satisfactory LED heat conduction and heat dissipation effects can be obtained through scientific and reasonable design.

Secondary heat dissipation scheme of LED street lamp

For high-power LED that has been commercialized, the primary heat dissipation design built by its chip package has been fixed and cannot be changed when used, so it is used as a light source in street lamps. If you can meet the heat dissipation requirements of the direct output results, if you can not meet the heat dissipation requirements of the LED radiator design, and then see if the design can meet the heat dissipation requirements of the LED, you need to carry out the next step of optimization design, if not, you need to re-design the radiator until you can meet the requirements.

LED street light secondary heat dissipation design process

Calculate the thermal resistance and junction temperature to see if you can meet the heat dissipation requirements of the LED, if you can meet the heat dissipation requirements of the direct output results, if you can not meet the heat dissipation requirements of the LED heat sink design, you need to carry out the next step of the optimization design, if not, you need to re-design the heat sink until you can meet the requirements.

The cooling scheme and process of LED street lights, the cooling fin area is set at will, and the arrangement of the cooling fin of the lamp does not take into account the use of the lamp, which affects the play of the fin effect. Ignoring the convection heat dissipation link, although many manufacturers have considered a variety of measures: heat pipe, loop heat pipe, plus thermal grease, etc., they do not realize that the heat ultimately depends on the external area of the lamp. If the temperature distribution of the fins is seriously uneven, it will cause a part of the fins (the lower temperature part) to play no role or have a limited role.

Shenzhen Liyang Shangtuo Lighting Technology Co., Ltd. is a high-tech enterprise focusing on the application field of LED lighting, integrating research and development, production and sales. It is a wholly-owned subsidiary of "Shenzhen Liyang Optoelectronics Co., LTD.", a listed enterprise on the New Third Board. Liyang Shares is a leading domestic LED packaging device product research, production and marketing in one of the listed enterprises, its business mainly focuses on LED packaging industry.