发明授权
- 专利标题： Low-pressure sodium discharge lamp having a collar-like heat shield
- 专利标题（中）： 低压钠放电灯具有一个领子式隔热罩
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申请号： US104541申请日： 1987-09-29
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公开(公告)号： US4808877A公开(公告)日： 1989-02-28
- 发明人: Adriaan Netten , Karel R. Vervecken
- 申请人： Adriaan Netten , Karel R. Vervecken
- 申请人地址： NY New York
- 专利权人： U.S. Philips Corporation
- 当前专利权人： U.S. Philips Corporation
- 当前专利权人地址： NY New York
- 优先权： NLX8500432 19850215
- 主分类号： H01J61/24
- IPC分类号： H01J61/24 ; H01J61/34 ; H01J61/36 ; H01J61/52 ; H01J61/74
摘要：
The low-pressure sodium discharge lamp according to the invention has a U-shaped discharge tube (1) with seals (4, 5), through which current-supply conductors (6, 7) extend to electrodes (8, 9). A supporting member (14) fixes the discharge tube (1) in an outer bulb (10). Upright collars (18, 19) at the supporting member (14), which surround the seals (4, 5) throughout their lengths, prevent the discharge tube from becoming leaky at high-frequency operation and the lamp from reaching the end of its life prematurely.
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