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什么是散热

贺拉斯-贺

最後更新:2023年12月26日

什么是散热

散热是指将 LED 芯片等照明元件产生的热量有效地转移和分散到周围环境中,以保持最佳工作温度的过程。在照明行业,散热是性能的保证、 效率以及 LED 灯的寿命。

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LED 灯在将电能转化为光能的过程中会产生热量。传统的白炽灯或荧光灯会以红外线的形式发射大量能量,而且能效较低。 可見光) 转化为热量。LED 的这种高能量转换效率会产生大量热量。

如果不能有效散热,就会导致 LED 结温升高和寿命缩短。LED 的结温与其光输出和寿命直接相关。LED 结的温度高,光输出就会降低,LED 的寿命也会缩短。因此,有效的散热对于将结温保持在可接受的范围内并确保 LED 灯的最佳性能和寿命至关重要。

照明行业采用了各种冷却解决方案,以促进有效的热传导和散热。这些解决方案包括使用散热片,其设计目的是吸收热量并将热量从灯具上散发出去。 LED 晶片.散热器通常由铝或铜等导热材料制成,并设计有鳍片或其他结构,以增加热传递的表面积。

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除散热器外,热界面材料和热管理设计等其他因素也有助于有效散热。热界面材料用于改善 LED 芯片与散热器之间的热接触,确保有效的热传导。照明系统的热管理设计涉及气流、通风以及 LED 和散热器的整体布置等因素,以促进散热。

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