An explosion proof LED flood light is a directional luminaire capable of producing a controlled beam of light for industrial area and task lighting. These luminaires are installed to illuminate outdoor environments where fire or explosion hazards may exist due to the presence of flammable gases or vapors, combustible dusts, or ignitable fibers or flyings. Outdoor areas classified as hazardous locations can be found in chemical and petrochemical processing facilities, oil refineries, drilling rigs, offshore oil platforms, marine loading and fuel transfer terminals, off-shore and dockside installations, tank farms, pipeline pumping stations, waste and sewage treatment plants, coal preparation plants and coal handling facilities, and outdoor paint spray facilities. Electrical equipment, which may produce arcs, sparks or high temperatures, can ignite an explosive atmosphere. The electrical installation therefore must be protected to prevent the ignition of potentially explosive atmospheres or materials outside the equipment. An explosion proof LED flood light is designed in a way that it will never give rise to explosion risks. Yet, it must be robust enough to perform in harsh environments that are typical of classified lighting applications.