FLUORESCENT DISCHARGE LAMP

摘要

PURPOSE:To prevent the flicker of light at the tube end part of a fluorescent discharge lamp, by arranging the pitch of a winding at the final part of a filament coil in the fluorescent discharge lamp to specific dimensions. CONSTITUTION:In a fluorescent discharge lamp having a tube 26-35mm. in its outside diameter and an envelope body located sideward of its filament coil, the pitch of a winding at the final winding part in the filament coil is formed to not less than 1,000mum. In this way, the flicker of light in an electode part at the tube end can be completely eliminated.