Title:
ランプ
Document Type and Number:
Japanese Patent JP7422980
Kind Code:
B2
Abstract:
To provide a novel high wattage density filament with good electrical properties, shape retention, and durability, and provide a novel lamp using a filament having a high wattage density.SOLUTION: A filament according to the present invention of a lamp that is bridged between electrodes and generates heat and emits light during energization has a shape of a double coil in which the filament of a single coil in which two wires are juxtaposed is further double-wound.SELECTED DRAWING: Figure 3A
More Like This:
| WO/1982/003138 | ALLOY WIRE FOR LAMP COMPONENTS AND LAMPS INCORPORATING SAME |
| JP2008507100 | Glow lamp with illuminant containing carbides |
Inventors:
Shunsuke Nagashima
Masahiro Yoshida
Katsushi Arai
Masahiro Yoshida
Katsushi Arai
Application Number:
JP2020035182A
Publication Date:
January 29, 2024
Filing Date:
March 02, 2020
Export Citation:
Assignee:
Chichibu Iwasaki Co., Ltd.
International Classes:
H01K1/14
Domestic Patent References:
| JP14001253Y1 | ||||
| JP2013540342A | ||||
| JP6223791A | ||||
| JP46040399B1 | ||||
| JP55016335A | ||||
| JP2021018830A | ||||
| JP62133368U |
Foreign References:
| CN101256927A | ||||
| US20120098407 | ||||
| US5101138 |
Attorney, Agent or Firm:
Kaname Takahashi
Tsuyoshi Oshio
Tsuyoshi Oshio