Fluorescent lamp with discharge tube bent substantially in plane
US6630779B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2000 |
| Grant date | Oct 7, 2003 |
| Priority date | — |
| Expiry date | Aug 9, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/307
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fluorescent lamp comprises a discharge tube disposed substantially in a plane and shaped at least in part to define a substantial portion of the boundary of a zone in the plane. The part of the tube defining the boundary includes at least one straight portion. The discharge tube has a central axis and sealed ends provided with electrodes and at least two tube sections running substantially parallel to each other. Each tube section has at least one blind-sealed end and the tube sections are connected in series through bridges in the vicinity of the blind-sealed ends to define a single continuous discharge space to be excited by electrical power supplied to the electrodes. A lamp support housing is positioned within the zone and the ends of the discharge tube as well as the blind-sealed ends of the tube sections are re-entrant into the zone. The ends of the discharge tube are received in the lamp support housing. The lamp support housing carries means suitable for mechanically and electrically connecting to a socket and include lead-in wires connecting the electrodes directly or through an operating circuit to the means suitable for electrically connecting to a socket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.