| 摘要 |
PURPOSE:To enable starting with a starting voltage being lowered in a rapid starting type lighting circuit by forming a conductive filament of 1 mm to 3 mm in width along tube axes on outer surfaces of glass tubes. CONSTITUTION:A rapid starting type fluorescent lamp is formed of two rectilinear glass tubes 1 of 13 mm to 24 mm in their inner diameters so as to communicate at their upper parts to compose a container. Phosphor films 2 are formed on inner surfaces of these glass tubes 1, and electrodes are sealed on both ends of the glass tubes 1. Further, mercury of several +mgs and inert gas of several Torrs are sealed in the glass tubes 1. A base 4 is mounted on one end of the container. A conductive filament 5 of 1mm to 3mm in width, for example, made of an aluminium foil or the like is formed along tube axes on outer surfaces of the glass tubes, and at least one end of its filament is electrically connected with one of base pins 6 planted in the base 4. Hence, lighting is enabled sufficiently with a lamp starting voltage much lowered in a rapid starting type lighting circuit.
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