Title:
HEATER LAMP
Document Type and Number:
Japanese Patent JP2003217803
Kind Code:
A
Abstract:
To provide a heater lamp, capable of efficiently propagating heat energy radiated from a filament of the heater lamp at a high ratio directly to a metal base material forming a roller part of the heating roller, whereby the surface temperature of the heat roller can be elevated to an operating temperature in a short time.
In this heater lamp, a filament 3 is disposed along the pipe axis in a pipe-like valve 21, filler gas is enclosed in the valve 21. A thermal conductivity of filler gas is 110×10-4 (W/m.K) or less, and the inside diameter of the valve 21 is 4 mm or more.
Inventors:
TAKEKOSHI KOICHI
KAWAMURA TADAKAZU
KAWAMURA TADAKAZU
Application Number:
JP2002008360A
Publication Date:
July 31, 2003
Filing Date:
January 17, 2002
Export Citation:
Assignee:
USHIO ELECTRIC INC
International Classes:
G03G15/20; H01K1/50; H05B3/00; H05B3/10; H05B3/44; (IPC1-7): H05B3/44; G03G15/20; H01K1/50; H05B3/00; H05B3/10