Title:
LAMP UNIT
Document Type and Number:
Japanese Patent JP2004079225
Kind Code:
A
Abstract:
To provide a lamp unit in which a cooling effect is heighten without affecting its explosion-proof function.
When a lamp 20 is lighted on, the lamp itself is heated to high temperatures, however, since the sealing end part 24 is connected to an explosion-proof glass 30 through a jointing part 29a of a ceramics system or the like, while an enclosed system structure of the lamp unit consisting of the lamp and a reflector is maintained, a heat transmission route is formed here. Thereby, heat at the sealing end part 24 is radiated promptly through this heat transmission route, and the sealing end part 24 and the lamp as a whole are cooled.
Inventors:
UMEMOTO AYUMI
HARITE SHINTARO
KAGATA HAJIME
MATSUBARA SHINJI
HARITE SHINTARO
KAGATA HAJIME
MATSUBARA SHINJI
Application Number:
JP2002234504A
Publication Date:
March 11, 2004
Filing Date:
August 12, 2002
Export Citation:
Assignee:
TOTO LTD
International Classes:
G03B21/14; F21S2/00; F21V29/00; H01J61/52; F21Y101/00; (IPC1-7): F21V29/00; F21S2/00; G03B21/14; H01J61/52
Attorney, Agent or Firm:
Yu Koyama