H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 63/02 (2006.01) H01J 61/33 (2006.01) H01J 61/72 (2006.01)
Patent
CA 2096073
To permit operation of a compact fluorescent lamp in an outdoor environment, for example at an annual average temperature of 10°C, a U-shaped discharge vessel has two straight legs of essentially circular cross section, connected by a cross- connecting portion (10) forming a 180° bend, which, to permit such outdoor use, has its inner diameter constricted from a transition with the longitudinal legs to an apex point of the bend. Preferably, the constriction results in an essentially elliptical cross section, in which the relationship of the minor axis (d) to the major axis (D) is Image the minor axis (d) extending in the direction of the legs, and the major axis (D) having a dimension corresponding about to the inner diameter of the legs. Preferably, the elliptical shape is obtained by thickening the outermost wall (10a) of the cross- connecting portion (10). The arrangement provides for insulation of the region where the cold spot forms so that, even under lower ambient temperatures, a suitable cold-spot temperature, which controls vapor pressure and vapor density in the lamp in operation, is obtained.
Hien Sigfried
Schafnitzel Hubert
Schmidt Hans
Fetherstonhaugh & Co.
Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh
LandOfFree
Low-pressure discharge lamp, particularly compact... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low-pressure discharge lamp, particularly compact..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-pressure discharge lamp, particularly compact... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1648027