Low-pressure mercury vapor discharge lamp
OwnerWillem Johannes Van Den Bogert, Hindrik Hermannus Stelinventors
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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′).
Claims10
A low-pressure mercury vapor discharge lamp comprising a discharge vessel (10), which discharge vessel (10) encloses a discharge space (18) containing a filling of mercury and an inert gas in a gastight manner, said discharge vessel (10) comprising tubular end portions (11;
- 11′) each having a longitudinal axis (12;
- 12′), electrodes (20;
- 20′) being arranged in the discharge space (18) for generating and maintaining a discharge in the discharge space (18), and at least one auxiliary amalgam (27) being provided in the discharge vessel (10) in the vicinity of at least one of the electrodes (20;
- 20′), characterized in that said auxiliary amalgam (27) is provided, without a separate carrier, on a part of the lamp so as to be electrically insulated with respect to the electrode (20, 20′).
Dependencies are inferred from the claim text.