Fluorescent lamp having a spacer between glass tubes
US6621209B2 · kind B2 · utility
0Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2001 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Nov 24, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/322
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a fluorescent lamp having a plurality of glass tubes that are connected with each other to form a discharge path, spacers that do not drop off even with insufficient accuracy of a gap between the glass tube are provided in a gap between the connected glass tubes, so as to improve the gap compression resistance and the torsion resistance. Each spacer is composed of a plurality of tonguelets and a bridge. The tonguelets are in contact with surfaces of the glass tubes and are connected by the bridge that is directed in an axial direction of the glass tubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.