Fluorescent lamp, method for manufacturing the same, and fluorescent lamp device
AssigneeHitachi, Ltd.
InventorsMamoru Fukushima, Yasuo Kobayashi, Soichiro Ogawa
Life of this patent
Estimating the term…
Abstract
A fluorescent lamp having a stem provided with first and second lead wires for energization of an electrode and an electrically-insulating member provided therein with a first hole and a second hole larger in cross-sectional area than said second lead wire. The first and second lead wires are inserted in the first and second holes of the electrically-insulating member, respectively, and an outer diameter of a glass envelope of the fluorescent lamp is not smaller than 13 mm and not larger than 29 mm.
Claims16
A fluorescent lamp comprising:
- a stem provided with first and second lead wires for energization of an electrode;
- and
- an electrically-insulating member having a first hole and a second hole larger in cross-sectional area than said second lead wire;
- wherein said first and second lead wires are inserted in said first and second holes of said electrically-insulating member, respectively;
- and
- wherein an outer diameter of a glass envelope of the fluorescent lamp is not smaller than 13 mm and not larger than 29 mm.
A fluorescent lamp comprising:
- a stem provided with first and second lead wires for energization of an electrode;
- and
- an electrically-insulating member having a first hole and a second hole larger in cross-sectional area than said second lead wire;
- wherein said first and second lead wires are inserted in said first and second holes of said electrically-insulating member, respectively, and then bent in directions so as to increase the spacing between said first and second lead wires at parts of said first and second lead wires which are extended from said stem and which are located on sides of tips thereof from said electrically-insulating member;
- and
- wherein an outer diameter of a glass envelope of said fluorescent lamp is not smaller than 13 mm and not larger than 29 mm.
A fluorescent lamp device wherein a fluorescent lamp is high-frequency lighted, comprising:
- a fluorescent lamp including:
- a stem provided with first and second lead wires for energization of an electrode;
- and
- an electrically-insulating member having a first hole and a second hole larger in cross-sectional area than said second lead wire;
- said first and second lead wires being inserted in said first and second holes of said electrically-insulating member, respectively;
- wherein an outer diameter of a glass envelope of said fluorescent lamp is not smaller than 13 mm and not larger than 29 mm;
- and
- wherein a high-frequency lighting circuit is provided for lighting said fluorescent lamp.
A fluorescent lamp device wherein a fluorescent lamp is high-frequency lighted, comprising:
- a fluorescent lamp including:
- a stem provided with first and second lead wires for energization of an electrode;
- and
- an electrically-insulating member having a first hole and a second hole larger in cross-sectional area than said second lead wire;
- said first and second lead wires being inserted in said first and second holes of said electrically-insulating member, respectively;
- wherein a spacing between a top of said stem and said member being not smaller than 0 mm and not larger than 5 mm;
- and
- wherein a high-frequency lighting circuit is provided for lighting said fluorescent lamp.
Dependencies are inferred from the claim text.