| 摘要 |
An durable illuminant with simple structure and stable discharge characteristics is provided. Discharge electrodes 14 and 15 fixed to respective sealing spacers 16 and 17 are inserted into a housing 13 from both ends, the housing constructed from a cylindrical glass material with equal inner radii at both open ends . A discharge chamber 18 is filled with a discharge gas and the sealing spacers 16 and 17 are fused and fixed to the housing 13 at this condition.
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