发明授权
US5001394A Glow discharge lamp containing thermal switch for producing double hot
spots on cathode
失效
发光放电灯含有热开关，用于在阴极上产生双重热点
- 专利标题： Glow discharge lamp containing thermal switch for producing double hot spots on cathode
- 专利标题（中）： 发光放电灯含有热开关，用于在阴极上产生双重热点
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申请号： US397230申请日： 1989-08-23
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公开(公告)号： US5001394A公开(公告)日： 1991-03-19
- 发明人: Andre C. Bouchard
- 申请人： Andre C. Bouchard
- 申请人地址： MA Danvers
- 专利权人： GTE Products Corporation
- 当前专利权人： GTE Products Corporation
- 当前专利权人地址： MA Danvers
- 主分类号： H05B41/08
- IPC分类号： H05B41/08 ; H01J61/54 ; H01J61/56 ; H01J61/64
摘要：
A preheat-type fluorescent lamp, such as a negative glow discharge lamp, includes a cathode contained within an evelope and supported by a pair of lead-in wires. A thermal switch is located within the evelope shunting the cathode and electrically coupled to the supporting lead-in wires. Closure of the thermal switch during lamp operation produces a double hot spot on the shunted cathode. As a result, the cathode temperature is lowered sufficiently causing an improvement in the lumen maintenance and life of the lamp.
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