Method of manufacturing a low-melting point alloy for sealing in a fluorescent lamp
AssigneeKabushiki Kaisha Toshiba
InventorsHisashi Yoshino, Masakatsu Haga, Takashi Yorifuji, Teruo Oshima
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Abstract
A method of manufacturing an amalgam for sealing in a fluorescent lamp consisting of tin, lead, bismuth, indium and mercury is disclosed. In this method, the amalgam is first melted and then discharged through a nozzle to be contacted with a coolant. A fluorescent lamp containing the amalgam manufactured by the above method is also disclosed.
Claims19
A method of manufacturing an amalgam for sealing in a fluorescent lamp, comprising the steps of:
- melting an analgam for sealing in a fluorescent lamp:
- ejecting the molten amalgam through a nozzle;
- and
- bringing the discharged molten amalgam into contact with a coolant to rapidly cool the alloy,
- wherein said amalgam consists of 15 to 57% by weight of tin, 5 to 40% by weight of lead, 30 to 70% by weight of bismuth, 4 to 50% by weight of indium and 4 to 25% by weight of mercury.
A fluorescent lamp in which an amalgam is sealed, the amalgam having been prepared by the steps of melting the amalgam for sealing in a fluorescent lamp;
- discharging the molten amalgam from a nozzle;
- and bringing the discharged molten amalgam into contact with a coolant to rapidly cool the amalgam,
- wherein said amalgam consists of 15 to 57% by weight of tin, 5 to 40% by weight of lead, 30 to 70% by weight of bismuth, 4 to 50% by weight of indium and 4 to 25% by weight of mercury.
Dependencies are inferred from the claim text.