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Title:
電球形蛍光ランプ
Document Type and Number:
Japanese Patent JP4311052
Kind Code:
B2
Abstract:

To solve a problem that, generally, a globe of a self-ballasted compact fluorescent lamp in a shape covering a plurality of discharge tubes with it is of a spherical shape, so unstable to be rolling, falling and breaking when it is placed on a flat face such as a desk, and, especially, in replacing the self-ballasted compact fluorescent lamp, the self-ballasted compact fluorescent lamp removed from a lighting fixture has to be temporarily kept in a stable state.

A plane face part 2 or a concave face part is provided at a part or a plurality of parts of the globe surface of the self-ballasted compact fluorescent lamp of a shape covering the discharge tube with the globe. By making the globe surface in such a structure, the lamp can be prevented from rolling and being damaged in the case the lamp is placed in a stable state before an operation of fitting the lamp to the lighting fixture, after an operation of removing it from the lighting fixture, or the like.

COPYRIGHT: (C)2005,JPO&NCIPI


Inventors:
Takamura Mimura
Kazuto Takada
Application Number:
JP2003076785A
Publication Date:
August 12, 2009
Filing Date:
March 20, 2003
Export Citation:
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Assignee:
Hitachi Lighting Co., Ltd.
International Classes:
F21S2/00; F21V3/02; H01J61/30; F21Y103/00
Domestic Patent References:
JP2002298608A
JP2106671U
JP58090656U
JP55170754U
JP61030958U
JP6021152U
JP4030040U
JP64044510U
JP3061792U
JP6005700U
Foreign References:
Attorney, Agent or Firm:
Kiyoshi Tanaka