Discharge lamp with spiral shaped discharge tube
AssigneeGeneral Electric Company
InventorsLászló Ilyés, József Tökés, József Fülöp
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Abstract
A low-pressure discharge lamp with a double spiral shaped discharge tube including two spiral shaped tube portions. The tube portions define a central axis of the discharge tube. A cold chamber portion connects the ends of the spiral shaped tube portions. The cold chamber portion has a first transversal dimension substantially perpendicular to the central axis which is larger than the diameter of the tube portions. The cold chamber portion further has a second transversal dimension substantially parallel to the central axis. The second transversal dimension of the cold chamber portion substantially corresponds to the diameter of the tube portions.
Claims13
A low-pressure discharge lamp comprising a double spiral shaped discharge tube including two spiral shaped tube portions, the tube portions defining a central axis of the discharge tube, the lamp further comprising a cold chamber portion connecting the ends of the spiral shaped tube portions;
- the cold chamber portion having a first transversal dimension substantially perpendicular to the central axis, the first transversal dimension of the cold chamber portion being larger than the diameter of the tube portions;
- and further
- the cold chamber portion having a second transversal dimension substantially parallel to the central axis, the second transversal dimension of the cold chamber portion substantially corresponding to the diameter of the tube portions.
Dependencies are inferred from the claim text.