| 摘要 |
PURPOSE:To improve the rise-up of heating and warm even the corners in the wooden frame by a method wherein near infrared rays, prominent in quick heating property, are projected against a central portion in the wooden frame and far infrared rays, mild and low in stimulation, are projected against the whole area of the wooden frame while warm-air is ventilated to circulate in the wooden frame. CONSTITUTION:A fan 16 and a heater 11 are provided at the central part of an inner ceiling of the wooden frame 1 and both of them are covered by a cover 18. The outer surface of the cover 18 is provided with a far infrared rays layer 19 and projecting holes 20 are provided on the cover 18 while suction ports 21 are provided at the central part of the cover 18. Further, blow-off ports 22 are formed at the peripheral sections of the cover 18. When the heater 11 is heated, near infrared rays are projected against the central portion of the wooden frame 1 through the projecting holes 20 and far infrared rays are projected against the whole area of the wooden frame 1 through the far infrared rays layer 19 when the cover 18 is heated by the heater 11. When the fan 16 is rotated, air, sucked through the suction holes 21, is heated by the heater 11 and is blown off through the blow-off ports 22.
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