Metal halide arc discharge lamp assembly

Details Metal halide arc discharge lamp assembly Metal halide arc discharge lamp assembly

1991-10-31

1993-12-14

Yusko, Donald J.

Electric lamp and discharge devices

With temperature modifier

Double wall, jacket or casing for envelope

313634, H01J 6134

Patent

active

052706087

ABSTRACT:
A metal halide arc discharge lamp includes a sealed lamp envelope, an arc tube located within the lamp envelope, a generally cylindrical, light-transmissive shroud positioned around the arc tube, a frame comprising a single support rod extending between dome and neck regions of the lamp envelope, upper and lower clips for attaching the arc tube and the shroud to the frame, a resilient bulb spacer attached to a neck end of the frame and bearing against an inside surface of the lamp envelope for positioning the frame relative to the lamp envelope, and electrical leads for coupling electrical energy to the arc tube. The frame is mechanically supported within the lamp envelope in the neck region solely by the bulb spacer. Leakage currents between the frame and the electrical leads through the lamp stem are effectively eliminated.

REFERENCES:
patent: 4620125 (1986-10-01), Keeffe et al.
patent: 4625141 (1986-11-01), Keeffe et al.
patent: 4961019 (1990-10-01), White et al.
patent: 4963790 (1990-10-01), White et al.
patent: 5023505 (1991-06-01), Ratliff et al.
patent: 5065069 (1991-11-01), Hunter
patent: 5122706 (1992-06-01), Parott et al.
patent: 5136204 (1992-08-01), Muzeroll et al.
W. M. Keeffe, et al. "Improved Low Wattage Metal Halide Lamp"; pp. 39-43; Summer 1988.

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