LED防爆灯具的设计方法研究

Study on Design of LED Lamps for Explosive Atmospheres

本文介绍了目前国内LED防爆灯具的技术现状,从光源形式、散热方法和光学设计等方面对各种技术方案进行了比较,分析了在LED防爆灯具设计中需解决的主要问题。测试了一种圆柱形直肋的散热效果,实验结果表明,在常温条件下,使用该类型的散热器可以满足集成封装的大功率光源模块的散热要求,根据环境温度的变化,合理地调整驱动功率有利于提高效率和延长LED的使用寿命。

In this paper, the authors reviewed the current state of the lamps used at explosive atmospheres. Various implementation schemes were compared in respect of light sources, heat dissipation and optical design. The authors analyzed main issues that should be addressed when designing explosion-proof lamps. Heat sinks with straight fins were tested, which showed that such kind of heat sink can satisfy requirements of heat dissipation for large power integrated LED arrays under conditions with normal environment temperature. It is helpful for getting higher efficiency and longer lifetime of LED when the drive power could be adjusted according to the ambient temperature.