公开(公告)号：EP1123559A1

公开(公告)日：2001-08-16

申请号：EP00954605.2

申请日：2000-08-03

Applicant: Koninklijke Philips Electronics N.V.

Inventor： VAN DEN BOGERT, Willem, J. ,  STEL, Hindrik, H. ,  VAN HAASTRECHT, Johannes, T., J. ,  WITS, Jeroen, J. ,  VAN DEN BRAKEL, Ronald, A. ,  OOMS, Pieter, C. ,  DE PUTTER, Cornelis

IPC: H01J61/54 ,  H01J61/72 ,  H01J61/28

CPC classification number: H01J61/72 ,  H01J61/28

Abstract: A low-pressure mercury vapor discharge lamp is provided with a discharge vessel (10). The discharge vessel comprises tubular end portions (11; 11'), which each have a longitudinal axis (12; 12'). The discharge vessel (10) encloses a discharge space (18) containing a filling of mercury and an inert gas in a gastight manner. Electrodes (20; 20') are arranged in the discharge space (18). An auxiliary amalgam is provided on a carrier (25; 25') in the proximity of the electrodes (20; 20'). According to the invention, a part of the carrier (25; 25') is arranged in a plane transverse to the longitudinal axis (12; 12'). Preferably, a stem (21; 21') in the tubular end portion (11; 11') carries, apart from the electrode (20; 20'), a support in the form of a wire (23; 23') or an extended exhaust tube, which support carries the carrier (25; 25'). In an alternative embodiment, the carrier is clamped directly onto the stem. Preferably, the carrier (25; 25') is electrically insulated with respect to the electrode. Preferably, a distance d between the carrier (25; 25') and the electrode (20; 20') lies in the range 1 ≤ d ≤ 3 mm. According to the invention, the discharge lamp has a relatively short run-up time.

公开(公告)号：EP1374279A2

公开(公告)日：2004-01-02

申请号：EP02701500.7

申请日：2002-03-01

Applicant: Koninklijke Philips Electronics N.V.

Inventor： VAN DEN BOGERT, Willem, J. ,  STEL, Hindrik, H.

IPC: H01J61/72

CPC classification number: H01J61/24 ,  H01J61/325 ,  H01J61/54 ,  H01J61/72

Abstract: A low/pressure mercury vapor discharge lamp is provided with a discharge vessel (10). The discharge vessel (10) has tubular end portions (11; 11'), each having a longitudinal axis (12; 12'). The discharge vessel (10) encloses a discharge space (18) containing a filling of mercury and an inert gas in a gastight manner. Electrodes (20; 20') are arranged in the discharge space (18). An auxiliary amalgam (27) is mounted close to the electrodes (20; 20'). According to the invention, the auxiliary amalgam (27) is fixed to a part of the lamp, without a separate carrier, so as to be electrically insulated with respect to the electrode (20; 20').