发明名称 |
Cold-cathode discharge lamp and lamp device having reduced sputtering on internal lead-in wire |
摘要 |
The present invention has an object to provide a cold-cathode discharge lamp which can suppress sputtering on a lead-in wire and reduce consumption of mercury so as to achieve a longer lifetime without increasing an amount of applied mercury. The cold-cathode discharge lamp of the present invention is characterized in that a lead-in wire connected to a cylindrical electrode in a lighting tube is made of a material same as a material that forms the cylindrical electrode. It is possible to suppress concentration negative glow discharge shifted to the lead-in wire and to allow the electrode to be covered with even negative glow discharge. Thus, it is possible to reduce mercury consumed by excessive sputtering on the outer surface of the internal lead-in wire and to achieve a longer lifetime of the cold-cathode discharge lamp.
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申请公布号 |
US6853139(B2) |
申请公布日期 |
2005.02.08 |
申请号 |
US20020106206 |
申请日期 |
2002.03.27 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YAMASHITA HIROFUMI;YAMAZAKI HARUO;TERADA TOSHIHIRO;KIHARA SHINJI |
分类号 |
H01J61/067;H01J61/36;H01J61/38;(IPC1-7):H01J17/18 |
主分类号 |
H01J61/067 |
代理机构 |
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主权项 |
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地址 |
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