Long field lamp
US4907138A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1988 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Jul 11, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2103/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
For the uniform illumination of rooms that have no special demands in terms of freedom of glare and reflective behavior, simply fashioned long field lamps are provided wherein a fluorescent tube is located in freely radiating fashion under a housing containing electrical components. The channel-like housing has a U-shaped cross-section and is mounted on an installation track fastened to a ceiling or wall and is provided with a cover on both face sides. In order to shorten installation time, the long field lamp has a simple structural design. A cover track representing the actual installation track is designed in common with end parts having plug-in ledges. These ledges plug onto narrow sides of the cover track to form a ceiling installation frame into which the housing is introduced from below and to which the housing is latchably held.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.