Metal halide lamp having function for suppressing abnormal...

Details Metal halide lamp having function for suppressing abnormal... Metal halide lamp having function for suppressing abnormal...

2007-06-12

2007-06-12

Vo, Tuyet Thi (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

C315S2090CD, C315S049000, C315S059000, C313S271000, C313S276000, C313S275000, C313S284000

Reexamination Certificate

active

10660929

ABSTRACT:
A metal halide lamp includes a ceramic arc tube that is composed of a main body and two narrow tube parts provided at respective ends of the main body; a pair of electrodes provided inside the main body; two feeders, each being connected at one end thereof to a different one of the electrodes inside the main body, and extending through a different one of the narrow tube parts, so as to be external to the arc tube at another end; a starting wire that is connected to one of the feeders, and that is in a vicinity of or contacts an outer surface of the arc tube; and a current suppressing unit that is on a current path of the starting wire, and suppresses or cuts off current on the path.

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