Metal halide high-intensity discharge lamp having improved resta

Details Metal halide high-intensity discharge lamp having improved resta Metal halide high-intensity discharge lamp having improved resta

1974-12-19

1976-11-02

Rolinec, R. V.

Electric lamp and discharge devices

With temperature modifier

Mounted on lead-in or electrode support

313 45, H01J 6152

Patent

active

039899705

ABSTRACT:
A metal halide high-intensity arc discharge lamp having a bulb containing elongated electrodes of a refractory metal such as tungsten, and means connecting the electrodes through seals of the bulb to external terminals. Cooling means such as metal fins are provided at the external terminals and function to cool the electrodes relatively quickly whenever the arc discharge terminates, without substantially affecting the desired high operating temperature of the electrodes. The faster cooling of the electrodes upon termination of the arc discharge permits the lamp to be restarted sooner.

REFERENCES:
patent: 2579109 (1951-12-01), Davies et al.
patent: 3259777 (1966-07-01), Fridrich
patent: 3685880 (1972-08-01), Sobieski
patent: 3780342 (1973-12-01), Grimshaw et al.

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