Fluorescent lamp light unit
US4747027A · kind A · utility
18Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1987 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Apr 29, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2113/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fluorescent lamp light unit a rectangular housing, one double parabolic head mirror, two side mirrors, and two raster mirrors being provided for each fluorescent lamp. One object of the invention is to maximize the lumicous efficiency with low illumination energy, under utilization of a simple structure. Each side mirror is held under prestressing, on the one hand, on the head wall of the housing beneath the edge of the double parabolic head mirror and, on the other hand, on frontal nose-shaped receptions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.