Discharge lamp including heat releasing device and lamp device
US6784601B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2001 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Jan 16, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/822
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a lamp device using a high-pressure vapor discharge lamp, particularly to an improvement for controlling the influence of the generation of heat, which accompanies an increase in lamp power and a reduction in the size of a reflector. A lamp device of the present invention comprises a discharge lamp having an arc tube enclosing luminescent materials and having a pair of opposing electrodes disposed therein and a pair of sealed portions extending from the arc tube; a reflector which reflects light radiated by the discharge lamp; a transparent member covering an open end of the reflector and accommodating the discharge lamp in a space between the transparent member and the reflector; and means for preventing an excessive temperature rise wherein the temperature rise of welded parts of wiring members electrically connected to the electrodes of the discharge lamp is restricted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.