Bulb-form lamp and manufacturing method of lamp case
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United States of America Patent
Stats
-
May 11, 2004
Grant Date -
Sep 27, 2001
app pub date -
Mar 23, 2001
filing date -
Mar 27, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a bulb-form lamp, a threaded portion 31 of a lamp cap 5, that is, a shell 30 is made of a conductive resin. The conductive resin shell 30 and an eyelet 50 constituting the lamp cap 5 are composite parts, which are molded integrally with a lamp case 20. A part of the conductive resin shell 30 is provided with a terminal connective portion 30a projecting into the lamp case 20. The terminal connective portion 30a is connected with an electrode terminal 40 led out of a printed circuit board 13 of a lighting circuit 14 so that the conductive resin shell 30 and the lighting circuit 14 are electrically connected. By doing so, it is possible to simplify the assembly of bulb-form lamp, and to reduce an assembly cost, and further, to manufacture a bulb-form lamp having a high quality and a lamp case for the bulb-form lamp.
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Cited Art Landscape
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