Single-based high-pressure discharge lamp with a heat retention

Details Single-based high-pressure discharge lamp with a heat retention Single-based high-pressure discharge lamp with a heat retention

1994-01-05

1995-09-26

O'Shea, Sandra L.

Electric lamp and discharge devices

With temperature modifier

Double wall, jacket or casing for envelope

313 17, 313634, H01J 1716, H01J 6130

Patent

active

054536545

ABSTRACT:
To simply and reliably retain a heat retention tube or sleeve (10) within envelope (1) and surrounding the arc tube or discharge vessel (4) of the lamp, end regions of the heat retention or conservation tube are pinched around current supply leads (7) which pass through the pinch or press region (11). To prevent dislocation of the tube or sleeve (10), axially as well as rotationally with respect to the arc tube, the current supply leads are deformed in the region of the pinch or press (11), for example by being flattened or deflected in a bend or V-shape from a straight wire. An exhaust tube (12) can be passed through the pinch (11) if the pinch extends across the entire diameter of the heat retention tube; otherwise, the pinch need only extend over a portion thereof, thus providing for pneumatic communication between the interior of the heat retention tube and the envelope (1).

REFERENCES:
patent: 4799135 (1989-01-01), Inukai et al.
patent: 4839565 (1989-06-01), Osteen
patent: 4859899 (1989-08-01), Keeffe et al.
patent: 5128589 (1992-07-01), Dakin
patent: 5136204 (1992-08-01), Muzeroll et al.
patent: 5253153 (1993-10-01), Mathews et al.

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