公开(公告)号：US20020074942A1

公开(公告)日：2002-06-20

申请号：US09992929

申请日：2001-11-05

Applicant: U.S. PHILIPS CORPORATION

Inventor： Cornelis J.M. Denissen ,  Cornelis R. Ronda ,  Wilhelmus M.P. Van Kemenade ,  Henricus P.M. Gubbels

IPC: H01J017/02

CPC classification number: H01J61/045 ,  H01J61/72

Abstract: A low-pressure mercury-vapor discharge lamp is provided with a discharge vessel and a first and a second end portion (12a). The discharge vessel encloses a discharge space provided with a filling of mercury and an inert gas in a gastight manner. Each end portion (12a) supports an electrode (20a) arranged in the discharge space. An electrode shield (22a) encompasses at least one of the electrodes (20a) and is made from a ceramic material. Preferably, the electrode shield (22a) is tubular in shape with a lateral slit directed towards the discharge space. The lamp according to the invention has a comparatively low mercury consumption.

Abstract translation: 低压水银蒸汽放电灯具有放电容器和第一和第二端部（12a）。 放电容器以气密的方式包围设置有汞和惰性气体填充物的放电空间。 每个端部（12a）支撑布置在放电空间中的电极（20a）。 电极屏蔽（22a）包围至少一个电极（20a）并由陶瓷材料制成。 优选地，电极屏蔽（22a）是管状的，其横向狭缝指向放电空间。 根据本发明的灯具有相对较低的汞消耗。