COMMERCIAL POWER SUPPLY SIGNAL LAMP

PROBLEM TO BE SOLVED: To miniaturize a filament by dropping the voltage, and enhance the conversion efficiency to parallel rays. SOLUTION: A commercial power supply signal lamp 1 is provided with a power supply control device 4 which performs a conversion into pulsating current PW provided with appr...

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Bibliographic Details
Main Authors IGUCHI MINORU, KAWACHI TADASHI, SUZUKI SATOSHI
Format Patent
LanguageEnglish
Published 07.08.1998
Edition6
Subjects
BLASTING
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
HEATING
LIGHTING
MECHANICAL ENGINEERING
NON-PORTABLE LIGHTING DEVICES
SYSTEMS THEREOF
VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To miniaturize a filament by dropping the voltage, and enhance the conversion efficiency to parallel rays. SOLUTION: A commercial power supply signal lamp 1 is provided with a power supply control device 4 which performs a conversion into pulsating current PW provided with appropriate effective voltage lower than that of a commercial power supply AC by executing phase control for the commercial power supply by means of a three terminal thyristor 4a, its filament can be made smaller in size with voltage dropped much more by making a light source 2 the commercial power supply signal lamp 1 where its filament 2a satisfies a specification corresponding to the effective voltage of pulsating current PW, and a conversion efficiency to parallel rays can be also enhanced by making a light emitting area to be located at the focus of a reflection mirror smaller.
Bibliography:Application Number: JP19970011257