| 摘要 |
In a fluorescent lamp, an elongated envelope containing, e.g., an Argon gas is sealed by covering each end with a stem. Through this stem, a pair of leading-in wires are introduced into the interior of the envelope, such that those portions of the leading-in wires which are located inside the envelope constitute internal wire portions. A filament coil, which has an emitter coated thereon in a predetermined range, is supported between the internal wire portions. An auxiliary anode, which is connected at one end to each internal wire portion, extends inside the envelope in the discharge direction of the fluorescent lamp. The auxiliary anode is bent such that its distal end is located within the emitter-coated range, as viewed in the longitudinal direction of the filament coil, and is located close to the central axis of the discharge space, as viewed in the radial direction of the filament coil.
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