Capped high-pressure discharge lamp

Details Capped high-pressure discharge lamp Capped high-pressure discharge lamp

1995-09-05

1998-04-07

Patel, Ashok

Electric lamp and discharge devices

With envelope

Having base and connector

313623, 313634, 313331, 439611, H01J 548

Patent

active

057368112

ABSTRACT:
The capped high pressure discharge lamp includes a light source (1) having a lamp vessel (1') with a first neck shaped portion (2) to which a lamp cap (30) is fixed. A connection conductor (7) runs alongside the discharge vessel to connect a second current supply conductor (5) extending from a second neck shaped portion (3) to a second contact member (36) of the cap. The lamp vessel (1') is contained by a tubular outer envelope (20), which is filled with air and does not envelope the connection conductor (7). The outer envelope (20, 50) has a narrowing portion (21, 52, 51) which encloses the second current supply conductor (5) or a neck shaped portion (2, 3). The outer envelope is maintained. The lamp is of a simple construction which allows for optimizing the light output or the temperature of the lamp vessel.

REFERENCES:
patent: 4823049 (1989-04-01), Sanders et al.
patent: 4935668 (1990-06-01), Hansler et al.
patent: 5216319 (1993-06-01), Van Heeswijck

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