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Hitachi Ltd
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Hitachi Ltd
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Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP12441677ApriorityCriticalpatent/JPS5458437A/en
Publication of JPS5458437ApublicationCriticalpatent/JPS5458437A/en
PURPOSE: To enable halogen lamps of large output to be exchanged by mounting a light source lamp, lamp socket and reflector to lamp base.
CONSTITUTION: A lamp socket 19 is fixed to a lamp base 21. A reflector 20 is mounted to a lamp base 21 by a mounting screw 22 and a stopper spring 23 and these are so constructed that the optical axis direction and mounting angle are adjusted by the mounting screw 22 in such a manner that the virtual image and real image of the lamp filament by the reflector 20 overlap. To exchange the lamp 11 which has come to its life, the light source unit 6 is moved to the position where there had been a rear side panel 10. With the knob 26 being held in hand, the lamp base 21 is opened like a dot-dash line