Radiators for LEDs
High-power LEDs have one significant disadvantage - it is their high temperature during operation. Consequences of constant overheating, as is easy to guess, destructive to the light-emitting crystals, they work much less, there is a deterioration of their chromatic performance, even the body itself deforms under the influence of temperature, in the end, after degrading all the characteristics of the LED. If you buy radiators for LEDs, you can create a heat sink for a high-power LED. Suitable only for those radiators for LEDs, which are made of alloys with increased heat capacity and thermal conductivity. Anodized (blackened) aluminum metal is excellent in this regard. Ribbed or needle radiator (form factors can be round, sometimes rectangular) of this alloy cools perfectly heated powerful LED. So that the radiator can be easily combined into a single design, they produce commensurate. Be sure to take care of the electrical isolation of the base of the LED, if it is mounted on a radiator with other LEDs, because it is not electrically neutral. If passive cooling is not enough, the heat dissipation is optimized by the fan. Air blowing has a disadvantage when used in the form of noise, so it is not always appropriate. In lighting devices, created on the basis of high-power LED, you can not do without a cooling system, without it, normal, continuous operation is impossible and even the highest light characteristics do not matter. Among the innovative technologies, special attention is attracted by the ceramic radiator equipped with a jet blower. This is a significant step forward compared to what is now common in the field. Jet blowing technology has an advantage in size (significantly reduced), and they create a minimum of extraneous noise. This is achieved by the turbulent pulsed air currents that blow around the radiator fins. Mechanically and dielectrically such a radiator is more perfect, and the thermal resistance is less, good adhesion to the metals. As a result of the emergence of this technology in lighting devices began to create an insulated heat sink, now the LED is mounted contact pad, which is located on the radiator itself.
Автор: LEDProm
