Compact low pressure mercury vapor discharge lamp

Details Compact low pressure mercury vapor discharge lamp Compact low pressure mercury vapor discharge lamp

1986-05-19

1987-08-25

DeMeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313634, H01J 6304

Patent

active

046895213

ABSTRACT:
A compact low-pressure mercury vapor discharge lamp comprises two or more straight tubes which are interconnected by arcuate connecting means (12) to form a discharge chamber between two electrodes (9). These electrodes are located in the distal ends (2, 3) of the lamp, and the ends (2, 3) are connected in a gas-tight manner to a lamp base (8) incorporating necessary contact pins (6, 7) and electrical conductors (8). The interconnecting means (12) presents a spine (13) which extends along the means (12). When seen in cross-section, the spine (13) exhibits an acute angle which defines a condensation space for condensation of mercury vapor used in the lamp. As a result of the shape of the spine (13) the mercury vapor condenses outside the circular cross-section area (14) where the positive column is formed during operation of the lamp, the discharge current passing in this column.

REFERENCES:
patent: 3780329 (1973-12-01), Otsuka et al.
patent: 4277720 (1981-07-01), Couwenberg et al.
patent: 4481442 (1984-11-01), Albrecht et al.
European Search Report, 1/86.

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