High-pressure discharge lamp

Details High-pressure discharge lamp High-pressure discharge lamp

1987-10-16

1989-02-21

Boudreau, Leo H.

Electric lamp and discharge devices

Electrode and shield structures

With lead wire or connector

313332, 313623, 313634, H01J 6136

Patent

active

048068160

ABSTRACT:
The high-pressure discharge lamp has a discharge vessel (1) with neck portions (7) of reduced width. The electrode pins (9) have at their free ends an electrode head (10), whose largest diameter is larger than the diameter of the electrode pins (9). Due to the fact that the electrode head (10) must be able to pass through a duct in the neck portion (7) of reduced width when the lamp is assembled, the electrode (2) has lateral play, which may lead to a non-centered position of the electrode (2) in the discharge vessel (1). In the lamp according to the invention, this disadvantage is mitigated in that the electrode pin (9) in the neck portion (7) of reduced width has a transverse dimension which is larger than the diameter of the pin (9), for example due to the presence of a flattened part (11).

REFERENCES:
patent: 3582704 (1971-06-01), Fridrich
patent: 4136298 (1979-01-01), Hansler
patent: 4254356 (1981-03-01), Karikas
patent: 4396857 (1983-08-01), Danko

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