Title:
放電ランプ用電極及び放電ランプ
Document Type and Number:
Japanese Patent JP4686604
Kind Code:
B2
Abstract:
It is possible to obtain electrodes 15 and 16 for a discharge lamp which are compact and have a large packing capacity for electron emitting material if an electrode for a discharge lamp is structured to include a quadruple coil 50 which is made by performing a first winding of a filament 41 to make a single coil 44, performing a secondary winding of the single coil 44 to make a double coil 46, performing a tertiary winding of the double coil 46 to make a triple coil 48 and performing a quaternary winding of the triple coil 48, and, in the quadruple coil 50, at least a hollow space 47' surrounded by the tertiary winding is structured to be packed with electron emitting material.
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Inventors:
Shiro Iida
Tamotsu Ando
Tatsuya Taniwaki
Katsushi Seki
Tamotsu Ando
Tatsuya Taniwaki
Katsushi Seki
Application Number:
JP2008522451A
Publication Date:
May 25, 2011
Filing Date:
June 18, 2007
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H01J61/067
Domestic Patent References:
| JP2004356060A | 2004-12-16 | |||
| JPH06223776A | 1994-08-12 | |||
| JPH09171796A | 1997-06-30 | |||
| JPH08124523A | 1996-05-17 |
Attorney, Agent or Firm:
Shiro Nakajima
Kobayashi Kunito
Koji Kawabata
Koichi Kimura
Kobayashi Kunito
Koji Kawabata
Koichi Kimura