Electric lamp and discharge devices – With envelope – Having base and connector
Reexamination Certificate
2003-03-28
2008-07-01
Williams, Joseph L. (Department: 2889)
Electric lamp and discharge devices
With envelope
Having base and connector
C313S317000, C313S318010, C313S318020, C313S318070, C313S318120
Reexamination Certificate
active
07394189
ABSTRACT:
An objective is to provide a compact self-ballasted fluorescent lamp which can reduce occurrence of a short circuit without protecting lead wires extending from each end portion of a spiral arc tube. To achieve the objective, a pair of connection pins is provided on a circuit board of the compact self-ballasted fluorescent lamp, near a periphery of the circuit board so as to oppose another pair of connection pins formed near the periphery. In this way, the pairs of connection pins can be respectively provided directly above the end portions of the spiral arc tube. Thus, lead wires extending from each of the end portions can be connected to a corresponding one of the pairs of connection pins with a relatively short distance. This prevents the lead wires from being in contact with the circuit board, thereby reducing occurrence of a short circuit.
REFERENCES:
patent: 5705883 (1998-01-01), Soules et al.
patent: 5828170 (1998-10-01), Nishio et al.
patent: 2-29604 (1990-08-01), None
patent: 0-7240178 (1995-09-01), None
patent: 2002-033003 (2002-01-01), None
Iida Shiro
Kitagawa Hiroki
Kotaki Toshikatsu
Nakanishi Akiko
Tomiyoshi Yasushige
Williams Joseph L.
Won Bumsuk
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