LED照明散热解决方案
尽管它们比传统的白炽灯使用和消耗的功率要少得多,但LED仍然在将电子转换为光子的过程中产生热量。此外,他们往往集中在一个小的,有限的地区产生的热量。如果设计的LED灯泡或夹具没有正确地散热,它会产生负面影响产品的光输出和寿命,从而确保其在市场上的失败。
随着LED作为替代白炽灯、卤素灯甚至荧光灯的一个可行的替代品的出现,工程师们一直在努力确保LED照明的问题不是一个问题,并且最近提出了新的解决方法。在许多情况下,散热机制依赖于传统的电子冷却方法,但以新的方式应用它们。但是也有一些新的方法显示出了很大的希望。
Heat sinks
For linear LED lighting products, Advanced Thermal Solutions offers the maxiFLOW line of heat sinks. The maxiFLOW design features a low profile array of spread fins in either of two configurations (Figure 1) designed to maximize surface area so as to more effectively cool LEDs using traditional air convection cooling.
Able to reduce the temperatures of LEDs to which they’re directly attached by more than 50 percent, the sinks are fabricated from extruded aluminum to minimize thermal resistance from the base to the fins, reduce weight, and keep costs low. The devices have a height of only 26 mm and are 305 mm long; depth at the base is 45 mm and 87 mm at the top. For an unducted configuration, thermal resistance with an air velocity of 2.0 m/s (400 ft/s) is 0.6 °C/W for the fully fin device and 0.4 °C/W for the partially fin device.
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