Luminaire
First Claim
1. A luminaire adapted to be suspended from a ceiling or the like for semi-indirect illumination of a work area below the ceiling comprising, in combination, an elongated support member adapted to be secured at its upper end to the ceiling, a housing suspended from said support member and arranged below the lower end thereof, said housing having a side wall defining an open top and having a bottom comprising semi-transparent lens means, elongated lamp means removably attached to the lower end of said support member and extending with its lower portion into said housing, said housing having reflector means within its side wall extending around the lower portion of said lamp means, said reflector means reflecting direct light rays from said lamp means upwardly and outwardly from said housing toward the ceiling principally in paths between said lamp means and said side walls, said semi-transparent lens means reflecting upwardly toward the ceiling a portion of the direct light rays incident thereon and transmitting downwardly therethrough substantially the remainder of said incident light rays, said reflector means comprising an annular opaque reflector arranged closely adjacent and substantially co-extensive with said housing side wall.
0 Assignments
0 Petitions
Accused Products
Abstract
Indoor lighting fixture provides semi-indirect symmetrical light distribution. The fixture comprises a central support tube attached to the ceiling at its upper end and having a high intensity gaseous discharge lamp at its lower end projecting into a box-like housing having a semi-transparent variable transmission lens on its bottom and an interior reflector extending around the lamp for reflecting light rays upwardly toward the ceiling. Vertically spaced louvers arranged encircling the upper portion of the lamp serve to shield the lamp from direct view of the room occupants to avoid glare.
19 Citations
11 Claims
- 1. A luminaire adapted to be suspended from a ceiling or the like for semi-indirect illumination of a work area below the ceiling comprising, in combination, an elongated support member adapted to be secured at its upper end to the ceiling, a housing suspended from said support member and arranged below the lower end thereof, said housing having a side wall defining an open top and having a bottom comprising semi-transparent lens means, elongated lamp means removably attached to the lower end of said support member and extending with its lower portion into said housing, said housing having reflector means within its side wall extending around the lower portion of said lamp means, said reflector means reflecting direct light rays from said lamp means upwardly and outwardly from said housing toward the ceiling principally in paths between said lamp means and said side walls, said semi-transparent lens means reflecting upwardly toward the ceiling a portion of the direct light rays incident thereon and transmitting downwardly therethrough substantially the remainder of said incident light rays, said reflector means comprising an annular opaque reflector arranged closely adjacent and substantially co-extensive with said housing side wall.
Specification