Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1986-11-13
1988-09-13
Moore, David K.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313113, 313623, 445 33, 445 69, H01J 932, H01J 6136
Patent
active
047712074
ABSTRACT:
In double ended high pressure discharge lamps such as are used in sealed beam reflectors the leads pass through the reflector bowl close to the axis thereof and close to each other giving risk of flashover therebetween, particularly with the high voltages required for hot restarting. To reduce such effects at least one of the leads has a length forming part of a circle terminating at one end and a sleeve of insulating refractory material conforming generally to the same circle is fitted to at least part of the circular part.
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Moore David K.
Thorn Emi plc
Wieder K.
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