US 6,536,924 B2 · Modular lighting unit

Abstract

The lighting fixture which comprises an elongated housing having a top wall and a bottom wall. The width of the top wall is greater than the width of the bottom wall, which has a free edge located below the top wall providing an opening for the emission of light from at least one light bulb mounted in the housing and projecting beyond the free edge of the bottom wall. A reflector is mounted in the housing and has a reflector wall located between the top wall and the at least one bulb. The reflector has a plurality of air vents formed in it and the top wall of the housing also has a plurality of vents formed therein, offset from the air vents in the reflector wall, whereby air below the reflector wall heated by the bulb flows through the air vents in the reflector, and out the air vents in the top wall, but the emission of light through the top wall is blocked.

Claims16

Dependent claims

A lighting fixture comprising an elongated housing having a top wall and a bottom wall;

the width of said top wall being greater than the width of said bottom wall whereby said bottom wall has a free edge located below said top wall;
at least one light bulb mounted in said housing on said bottom wall and projecting beyond said free edge of the bottom wall and below said top wall;
a separate reflector mounted in said housing and having a reflector wall located below and spaced from said top wall and between said top wall and said at least one bulb, said reflector having a plurality of air vents formed therein;
and said top wall having a plurality of air vents formed therein offset from the air vents in the reflector whereby air below the reflector wall heated by said at least one bulb will flow through the air vents in the reflector out the air vents in the top wall, but light will not be projected through the top wall.

1 more element

A lighting fixture comprising an elongated housing having a top wall, a bottom wall, and a pair of opposed side walls;

said top wall having a width which is greater than the width of said bottom wall whereby said bottom wall has a longitudinal free edge located below the top wall;
a plurality of light bulbs mounted in said housing and projecting beyond said free edge of the bottom wall and below said top wall;
a reflector mounted in said housing having a reflector wall located below and spaced from said top wall and between said top wall and said bulbs, said reflector wall having a plurality of longitudinally-spaced air vents formed therein, each consisting of at least one slot formed in the reflector wall;
and said top wall having a plurality of longitudinally-spaced air vents formed therein, each consisting of at least one slot;
said bulbs being located below the reflector and between the said slots therein, said slots in the top wall of the housing being located between the slots in the reflector wall when the fixture is viewed in plan, whereby air below the reflector wall heated by said bulbs will flow through the air vents in the reflector out the air vents in the top wall while light passage out of the top wall is blocked.

2 more elements

Dependencies are inferred from the claim text.

Modular lighting unit

Life of this patent

Modular lighting unit

Life of this patent

Abstract

Claims16