Integrated lighting systems for suspended ceilings or the like
US4407011A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1980 |
| Grant date | Sep 27, 1983 |
| Priority date | — |
| Expiry date | Dec 8, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2103/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an integrated suspension ceiling it is disclosed in which a fluorescent tube type lighting fixture is supported from an directly over a runner forming a part of the grid of the ceiling system. The runner is provided with a central web and oppositely extending flanges extending from the sides of the web. The web is formed with an opening above which the lighting fixture is supported. The lighting fixture includes a ballast frame separately supported on the runner above the opening, a reflector positioned in the opening below the ballast frame supported directly on the runner and a louver mounted within the opening flush with the plane of the ceiling. Each of the frame, reflector and louver are separately supported and removable from the runner for installation and service. Because the lighting fixture is supported directly on the runner and is removably attached thereto, the lighting fixture can be installed after the grid is installed. The fixture does not provide an interruption in the ceiling system. Therefore, fixtures can be conveniently located where relatively high levels of light intensity are required without requiring excessive lighting in areas where lower lighting lev…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.