Title:
FLUORESCENT LAMP
Document Type and Number:
Japanese Patent JP2003217510
Kind Code:
A
Abstract:
To provide a florescent lamp of which, a narrow tube sealing part 3b is prevented from a crack caused by a collision of an amalgam 4 in the narrow tube 3 and the narrow tube sealing part 3b when the narrow tube 3 is used as an exhaust tube.
A concave-shaped protection means 5 is formed between the amalgam 4 enclosed in the narrow tube 3 and the sealing part 3b, by the above, the amalgam 4 is restrained from touching a protrusion part 3c of the narrow tube sealing part and generation of a crack is prevented even if a vibration is impressed to the fluorescent lamp.
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Inventors:
FUKAMACHI TAEKO
IMAMURA HITOSHI
OKADA MOTOKAZU
IMAMURA HITOSHI
OKADA MOTOKAZU
Application Number:
JP2002015284A
Publication Date:
July 31, 2003
Filing Date:
January 24, 2002
Export Citation:
Assignee:
TOSHIBA LIGHTING & TECHNOLOGY
International Classes:
F21S4/00; F21S8/02; H01J61/24; F21Y103/37; (IPC1-7): H01J61/24; F21S4/00; F21S8/02
Attorney, Agent or Firm:
Junichi Izumi