Fluorescent lamp and ferrule
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United States of America Patent
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Nov 25, 2008
Grant Date -
Jun 29, 2006
app pub date -
Sep 2, 2003
filing date -
Sep 2, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
At the end of life of a fluorescent lamp having a base to which a pin is press-fitted, it is an object to prevent the pin from dropping or slanting, etc. A fluorescent lamp includes a base having a base body and a pin press-fitted to a hole formed on the base body. A pin retaining force (a pin torque of the base) Fe after use by which the base body retains the pin is at least 0.08 Nm after the fluorescent lamp is burned for a rated life, and a rate Fe/Fi of an initial pin retaining force Fi by which the base body retains the pin before use of the fluorescent lamp and the pin retaining force Fe after use is at least 0.66.
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