The explosion-proof lighting fixtures in order to prevent a variety of specific measures taken by the surrounding explosive mixtures, such as explosive gas atmospheres or explosive dust environment. Explosion-proof lighting a very important principle of explosion-proof is to limit contact with explosive gases, explosive dust shell surface, the component surface temperature or the surface of the electronic components and limiting the electrical contact surface is lower than the minimum ignition temperature, ignition temperature. LED is a solid cold light source with high photoelectric conversion efficiency, heat a small, small power consumption, operating voltage, safe low voltage, long life, high power LED is the ideal light source of the explosion-proof lamps.