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Ichikoh Industries Ltd
Original Assignee
Ichikoh Industries Ltd
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Filing date
Publication date
Application filed by Ichikoh Industries LtdfiledCriticalIchikoh Industries Ltd
Priority to JP6409576ApriorityCriticalpatent/JPS52148983A/en
Publication of JPS52148983ApublicationCriticalpatent/JPS52148983A/en
Non-Portable Lighting Devices Or Systems Thereof
(AREA)
Abstract
PURPOSE: To make current flow only in a main filament at normal state, make current flow automatically in an auxiliary filament at breaking of the main filament, install a warning indicator to warn the breaking of the filament, and prevent a fault safely.