Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1988-12-28
1990-03-20
Wieder, Kenneth
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313560, 313619, 313239, 313356, H01J 6154, H01J 6134
Patent
active
049104276
ABSTRACT:
A discontinuous annular metallic holder for a glow starter in a high pressure discharge lamp. The holder has a hexagonal shape and encircles the bulb of the glow starter. One side is welded to one of the current-supply conductors extending from the lamp stem and two of the sides are parallel to the plane of the getters. The lower parallel side closest to the getter plane has an opening extending the length of the side to define an electrical discontinuity and to prevent a continuous circuit path within the lower side. The gap reduces the current induced in the lower side and resultant heating when the holder is subjected to an electromagnetic field during flashing of the getters. The reduced temperature of the lower side prevents damage to the glow starter.
REFERENCES:
patent: 3780327 (1973-12-01), Vervaart et al.
Aelterman Kris
Bernard Kathleen
North American Philips Corporation
Wieder Kenneth
Wieghaus Brian J.
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