TUBE TYPE INCANDESCENT HEATER, HEATING DEVICE AND IMAGE FORMING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a tube type incandescent heater capable of suppressing degradation of a service life of a bulb with a reflective film, and radiation efficiency by forming a protective film on the reflective film formed on the surface of the bulb. SOLUTION: Luminescent parts 12 emitting light by power supply, and conductive non-luminescent parts 19 which are serially connected to one another in the longitudinal direction are housed in a tube type bulb 11; an inactive gas is filled therein; pinch seals 151 and 152 are formed at both ends of the bulb 11 and led out through outer lead wires 181 and 182 from both ends of the serially connected luminescent parts 12 and the non-luminescent parts 13; and thus a halogen bulb 100 is composed. The reflective film 19 is formed on the upper side perpendicular to the longitudinal direction of the bulb 11, and a part without forming the reflective film 19 thereon is used as a light/heat radiation opening 21 for radiating light and heat. The protective film 20 for preventing separation of the reflective film 19 from the bulb 11 is formed on the reflective film 19. COPYRIGHT: (C)2008,JPO&INPIT