Luminaire

A luminaire including a housing, a gate plate and a shutter assembly, said gate plate residing in a plane and having a gate aperture therein, and said shutter assembly comprising a plurality of shutter blades connected to said housing to selectively close portions of the aperture, said shutter blades being slidable both radially and circumferentially of said gate aperture, said luminaire further comprising at least one spring member biasing said shutter blades generally into the plane of said gate plate, and in which said housing has a slot into which said at least one spring member is insertable for acting between said housing and said shutter blades, said at least one spring member including a wall portion blocking the egress of light through the slot through which it is insertable, said luminaire further including retaining means for retaining said at least one spring member within said housing.

A shutter blade for use in a luminaire, having a gate assembly including a gate having a central aperture, said shutter blade residing in a plane and comprising a blade edge portion and a handle portion extending rearwardly therefrom, said blade edge portion, including retaining means for preventing the blade edge portion from projecting through said central aperture of said gate, said retaining means comprising a pair of detents extending out of said plane of said blade.

A shutter blade for use in a luminaire having a body and a gate assembly including a gate provided with a central aperture, said shutter blade residing in a plane and comprising a blade edge portion and a handle portion extending rearwardly therefrom, said blade edge portion, including retaining means for preventing the blade edge portion from projecting through said central aperture of said gate, said body of said luminaire including means for cooperating with said retaining means of said blade edge portion.