Low-pressure nitrogen gas discharge lamp

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PROBLEM TO BE SOLVED : To provide a low-pressure nitrogen gas discharge lamp obtaining a sufficient nitrogen vanishment suppression effect without performing any pretreatment by discharging. ?SOLUTION : The low-pressure nitrogen gas discharge lamp 1 seals nitrogen gas into a glass valve 2 as luminescence gas and utilizes light radiated from the nitrogen gas by discharging. In the low-pressure nitrogen gas discharge lamp 1, an isolating film 3 for a discharge space is provided at a part surrounding at least a positive column on the inner surface of the glass valve 2, and the isolating film 3 is made thicker than that used for a low-pressure rare gas discharge lamp. ?COPYRIGHT : (C)2008, JPO&INPIT ?