Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1997-12-29
1999-08-10
Patel, Nimeshkumar D.
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
313634, H01J 1716
Patent
active
059363410
ABSTRACT:
The invention relates to a single-ended discharge lamp comprising a discharge tube bordering a discharge space and sealed in a gas-tight manner at its ends and also comprising electrodes, wherein the discharge tube has at least two straight tube portions and a bent connection member between at least some of the adjacent straight tube portions. The bent connection member has an arc-shaped outer and an arc-shaped inner bordering wall, an indentation narrowing the cross-section of the discharge space is formed in the outer bordering wall and the bent connection member has bulged dome portions between its ends connecting to the straight tube portion and the narrowing indentation. The solution is characterized in that the largest cross-section (A2) inside the tube wall of at least one of the dome portions (11d) is at least 1.8 times but at maximum 2.2 times the smallest cross-section (A3) inside the tube wall between the arc-shaped inner bordering wall (11b) of the bent connection member (11) and the narrowing indentation (11c).
REFERENCES:
patent: 4481442 (1984-11-01), Albrecht et al.
patent: 5055738 (1991-10-01), Yorifuji et al.
patent: 5635794 (1997-06-01), Koerfer
Koleszar Kazmer
Micsinai Zsolt
Ormai Peter
Tokes Jozsef
Vamos Zoltan
General Electric Company
Patel Nimeshkumar D.
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