| 摘要 |
PURPOSE:To effectively circulate hot air generated from a heater unit over to a heating space and further to thin the heater unit by disposing a fan at a position inside a heater and the same as the position of the heater or upper than the heater and locating the heater at its leeward. CONSTITUTION:Reference numeral 21 designates a planar fan fixed to the shaft 22 of a motor and driven and rotated by the motor. The fan 21 is located at a position inside the heaters 19 and 19 and its outer diameter is small, and disposed at a position higher than that of each of the heaters 19 and 19, and is drawn near to the lower surface of a reflection plate 14. Further, the shaft 22 of the motor 20 is opposed to the lower part of a projection 15. Reference numeral 23 designates a netted protecting guard having at its central part a reinforcing plate 24 having a diameter equal to that of the mounting portion 17 of a support plate 16 or a size larger than that of the mounting portion 17. The protecting guard 23 is provided with fixed stepped parts 25 and 25 projecting outwardly of the upper outer peripheral edge so that it covers over the reflection plate 14, heaters 19 and 19, motor 20 and fan 21. By the rotation of the fan 21, air flow mainly sucked up from the outside of the mounting portion 17 hits against the lower surface of the reflection plate 14 and flows along the wall surface of the reflection plate 14, and is discharged along the inclined plate of the reflection plate through a space formed between the heaters 19 and 19 and reflection plate 14. |
