LOW-PRESSURE MERCURY VAPOR DISCHARGE LAMP

WIPO Patent Application WO2004114360

A3

Low-pressure mercury vapor discharge lamp has a light-transmitting discharge vessel (10) enclosing, in a gastight manner, a discharge space (13) provided with a filling of mercury and a rare gas. The discharge vessel (10) comprises discharge means for maintaining a discharge in the discharge space (13). The discharge vessel is provided with a source of mercury (7). In addition, the discharge vessel is provided with a releasing means (8) for the controlled release of mercury vapor from the source of mercury. The releasing means is operative in response to a condition of the low-pressure mercury vapor discharge lamp, the condition being a characteristic of the discharge lamp and/or a pre-determined time interval. The discharge lamp according to the invention operates under unsaturated mercury conditions. Preferably, the releasing means is operated via a switch device, preferably comprising a reed relay.

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JANSEN CORNELIS J J (NL)
HELLEBREKERS WILHELMUS M (NL)
DE MAAGT BENNIE J (NL)
DE MAN ROLF E (NL)
DEURENBERG PETER H F (NL)
HENDRIKS THEODORUS M (NL)

PCT/IB2004/050905

June 22, 2006

June 15, 2004

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KONINKL PHILIPS ELECTRONICS NV (NL)
JANSEN CORNELIS J J (NL)
HELLEBREKERS WILHELMUS M (NL)
DE MAAGT BENNIE J (NL)
DE MAN ROLF E (NL)
DEURENBERG PETER H F (NL)
HENDRIKS THEODORUS M (NL)

H01J61/28; H01J61/00; H01J61/20; H01J61/72

WO2004112085A2	2004-12-23
WO2001067479A1	2001-09-13

US5274305A	1993-12-28
GB1062141A	1967-03-15
GB2081503A	1982-02-17
EP0918352A1	1999-05-26

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