High lumen output fluorescent lamp down light fixture

Abstract

An alternative lighting system luminaire to conventional high intensity discharge light fixtures such as mercury vapor, metal halide, high pressure sodium lighting fixtures includes a highly polished reflector made of silver film or highly polished aluminum with a plurality of fluorescent biax lamps to provide both greater lumen production per watt and retain a greater percentage of it's lumen output over the fixtures life. This system allows one for one fixture replacement when substituted for 400-watt metal halide, 400 watt high pressure sodium, and 400-1000 watt mercury vapor high intensity discharge lighting fixtures in design or replacement applications. The luminaire utilizes very high efficiency 'Dulux L' high lumen compact fluorescent lamps, which are each shaped like a single inverted 'U' and are a minimum of 16 inches long. The lamps extend parallel to the face lens of the fixture and can number from one to eight in quantity. A highly polished reflector is placed above the lamps allowing for the maximum amount of light to be emitted from the face of the fixture with the lens. The lamps are secured and powered by sockets fastened to plates, which are mounted at two opposing sides of the fixture. Ballasts are located in the area between the reflector and the top of the fixture. The upper section of the fixture is angled upward to create a pyramid effect that gives stability to the fixture when it is pendant hung from a ceiling.