Fluorescent lamp and base with press-fit hole
AssigneeOsram-Melco Limited
InventorsMitsuhiro Ikeda, Takashi Osawa, Masaomi Takeda, Koji Kokufu
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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.
Claims18
A base of a fluorescent lamp comprising:
- a base body made of thermoplastic resin;
- and
- a pin press-fitted to a hole formed on the base body,
- wherein the thermoplastic resin contains white pigment of at least 0 wt % and no more than 3 wt % and glass filler of at least 5 wt % and no more than 30 wt %, and
- wherein an initial pin torque Fi by which the base body retains the pin before use of the fluorescent lamp is at least 0.10 Nm and no more than 0.12 Nm.
A fluorescent lamp comprising a base including:
- a base body made of thermoplastic resin;
- and
- a pin press-fitted to a hole formed on the base body,
- wherein the thermoplastic resin contains white pigment of at least 0 wt % and no more than 3 wt % and glass filler of at least 5 wt % and no more than 30 wt %, and
- wherein an initial pin torque Fi by which the base body retains the pin before use of the fluorescent lamp is at least 0.10 Nm and no more than 0.12 Nm.
Dependencies are inferred from the claim text.