| 摘要 |
PROBLEM TO BE SOLVED: To efficiently discharge heat inside a device main body to the outside without making the size of the device main body large and without increasing the noise of a cooling fan. SOLUTION: A duct D2 along a carrying path 16 which is inclined so that the side of the path 16 on the downstream side, where a thermal fixing device 10 exists, is to be lower is provided between the path 16 and a component mounted board 12 arranged below the path 16. A first aperture part 14a becoming the suction port of the duct D2 is provided in the vicinity of the device 10 on the first side surface 13a of the armour of the device main body 13 and also a second aperture part 14c becoming the exhausting port of the duct D2 is provided on a second side surface 13c opposed to the surface 13a. The part 14c is arranged at a position higher than the part 14a. Thus, the difference of air pressure caused by heat distribution occurring inside the device main body 13 is utilized so that air flows (a) and (c) are formed and the heat inside the main body 13 can be effectively discharged to the outside. |
