Title:
FILAMENT LAMP
Document Type and Number:
Japanese Patent JP2014232645
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a filament lamp including a novel filament holding structure capable of suppressing light emission in a light non-emission area of a filament while preventing the filament from being deformed or damaged.SOLUTION: The filament lamp is formed by disposing a filament which includes a light emission area and a light non-emission area, within a light-emitting tube while being supported by a supporter. The supporter includes: a ring-shaped holding part which is abutted to an inner surface of the light-emitting tube for holding the filament so as to position the filament on a tube axis of the light-emitting tube; and a coil-shaped engaging part engaged to a coil-shaped engaged part formed in the light non-emission area of the filament. The engaging part is provided while covering an entire outer circumference of the engaged part in the filament.
Inventors:
YAGI KENTARO
IKUSHIMA KAZUYUKI
IKUSHIMA KAZUYUKI
Application Number:
JP2013112940A
Publication Date:
December 11, 2014
Filing Date:
May 29, 2013
Export Citation:
Assignee:
USHIO ELECTRIC INC
International Classes:
H01K1/24
Domestic Patent References:
| JPS54157492U | 1979-11-01 | |||
| JPS4727481U | 1972-11-28 |
Attorney, Agent or Firm:
Masahiko Oi