Compact self-ballasted fluorescent lamp with improved rising characteristics
First Claim
1. A compact self-ballasted fluorescent lamp, comprising:
- an arc tube including a glass tube at least partially bent, and electrodes sealed at both ends of the glass tube, each electrode including a filament coil; and
a holder having a pair of insertion openings formed therein, and holding the arc tube by fixing the ends of the glass tube inserted through the insertion openings, wherein the ends of the glass tube are inserted to such positions that enable each filament coil to be positioned within the holder, and a minimum distance L1, in an insertion direction of the ends of the glass tube, between each filament coil and an edge of corresponding one of the insertion openings is in a range of 0 to 10 mm inclusive.
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Accused Products
Abstract
A compact self-ballasted fluorescent lamp includes a double-spiral arc tube formed by winding a glass tube to its both ends around a spiral axis, and sealing electrodes each having a filament coil at the ends of the glass tube, and a holding member that has a closed bottom and holds the arc tube. The holding member has, at its end wall, insertion openings through which the ends of the glass tube are inserted. The ends of the glass tube are inserted to such positions that enable the filament coils to be positioned within the holding member, and the minimum distance L, in the insertion direction of the ends of the glass tube, between the filament coil and the edge of the insertion opening of the holding member is 6 mm.
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Citations
10 Claims
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1. A compact self-ballasted fluorescent lamp, comprising:
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an arc tube including a glass tube at least partially bent, and electrodes sealed at both ends of the glass tube, each electrode including a filament coil; and
a holder having a pair of insertion openings formed therein, and holding the arc tube by fixing the ends of the glass tube inserted through the insertion openings, wherein the ends of the glass tube are inserted to such positions that enable each filament coil to be positioned within the holder, and a minimum distance L1, in an insertion direction of the ends of the glass tube, between each filament coil and an edge of corresponding one of the insertion openings is in a range of 0 to 10 mm inclusive. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification