| 摘要 |
PROBLEM TO BE SOLVED: To provide a rare gas discharge lamp capable of suppressing deterioration of starting characteristics and luminous characteristics due to firing and also capable of relaxing an effect on the environment. SOLUTION: In a rare gas discharge lamp equipped with an enclosure 1A having a luminous layer 2A including one or more kinds of phosphors on its inner surface and a sheet structure 3 made up by disposing a pair of strip-like external electrode 5, 6 made of metallic members apart from each other on one surface of a light-transmitting sheet 4 having a length substantially of the same order of the entire length of the enclosure 1A and forming an adhesive layer on the light-transmitting sheet surface situated on the side where the external electrodes are positioned, the enclosure 1A is formed in the shape of a straight-tube of a glass member having volume resistivity not less than 1×10<9>Ωcm at 150 deg.C and containing no lead, the amount of the luminous layer deposited is set in the range of 5 to 30 mg/cm<2> , and the sheet structure is wound around a peripheral surface of the enclosure 1A so as to position the external electrodes between the enclosure and the light-transmitting sheet.
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