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A fluorescent lamp having an improved starting performance, especially at low temperatures. A gas under a low pressure is sealed in a glass tube having a pair of electrodes mounted thereon, and a fluorescent material is coated on the inner surface of the glass tube, the fluorescent material being ac

A fluorescent lamp having an improved starting performance, especially at low temperatures. A gas under a low pressure is sealed in a glass tube having a pair of electrodes mounted thereon, and a fluorescent material is coated on the inner surface of the glass tube, the fluorescent material being activated to emit light by a discharge between the pair of electrodes. A third electrode is provided between the pair of electrodes, the third electrode being connected to one of the pair of electrodes.

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A fluorescent lamp comprising: a glass tube, a gas under a low pressure sealed in said glass tube; first and second electrodes mounted at respective opposite ends of said glass tube; a fluorescent material provided on an inner surface of said glass tube, said fluorescent material being caused to emi

A fluorescent lamp comprising: a glass tube, a gas under a low pressure sealed in said glass tube; first and second electrodes mounted at respective opposite ends of said glass tube; a fluorescent material provided on an inner surface of said glass tube, said fluorescent material being caused to emit light by a discharge between said first and second electrodes; and a third electrode provided between said first and second electrodes, said third electrode being connected to said first electrode, wherein said third electrode comprises a layer of aluminum bonded to an outer surface of said glass tube in a region excluding a light-applying aperture of said tube, and a layer of copper bonded to an outer surface of said layer of aluminum.