Neon lamp production method and system
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United States of America Patent
Stats
-
Aug 13, 2002
Grant Date -
Aug 9, 2001
app pub date -
Jan 18, 2001
filing date -
Feb 3, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A neon lamp including a sealed glass bulb, electrodes and leads connected to the electrodes has a flat head whose center region descends into the interior of the sealed glass bulb. A method of producing the neon lamp includes steps of charging neon gas into a glass tube through a fine glass tube at the head of the glass tube, sealing the fine glass tube to obtain a sealed glass bulb having a projecting tip portion, removing excess glass of the projecting tip portion, and shaping the projecting tip portion into a substantially flat or lenticular head portion. A system for producing the neon lamp includes a shaping head for accommodating the sealed glass bulb with its projecting tip portion exposed outside the shaping head, heating means for melting the projecting tip portion, a projecting tip cutter for removing excess glass of the projecting tip portion, and a head presser for shaping the projecting tip portion into a substantially flat or lenticular shape.
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