| 摘要 |
THERE IS PROVIDED A HEAT INSULATING HOSE WHICH COMPRISES A SEAMLESS CYLINDRICAL INNER TUBE (1) FORMED OF A SYNTHETIC RESIN, AND A CYLINDRICAL HEAT INSULATING LAYER (2) FORMED OF A FOAMED SYNTHETIC RESIN FOR COVERING AN OUTER PERIPHERAL FACE OF THE INNER TUBE (1), CHARACTERIZED IN THAT THE INNER TUBE (1) IS PROVIDED AT ITS ONE END WITH A CYLINDRICAL PART (13) FOR CONNECTION WITH A DRAIN OUTLET OF AN AIR CONDITIONING APPLIANCE AND FORMED WITH A NUMBER OF RING-SHAPED PROTRUSION STRIPES (11) WHICH PROJECT TOWARD ITS OUTER CIRCUMFERENCE OVER AN ENTIRE LENGTH THEREOF IN ITS AXIAL DIRECTION EXCEPT THE CYLINDRICAL PART (13) SPACING A DISTANCE W WHICH IS WIDER THAN AN AXIAL WIDTH W OF EACH OF THE RING-SHAPED PROTRUSION STRIPES (11), AND THAT AN AREA B OF A DESIRED RANGE SPACED BY A DETERMINED LENGTH A FROM THE CYLINDRICAL PART IS AN AREA WHEREIN A NUMBER OF RING-SHAPED PROTRUSION STRIPES ARE FORMED AT A SMALLER DISTANCE S. THEREBY, IT IS POSSIBLE TO PROVIDE A HEAT INSULATING HOSE WHICH CAN BE EASILY BENT AT AN ACUTE ANGLE FOR A PIPING ARRANGEMENT IN A DISCHARGING DIRECTION SUCH AS TOWARD A HOLE IN A WALL OR THE LIKE FROM A POSITION WHERE IT COMES OUT OF AN AIR CONDITIONING APPLIANCE OR THE LIKE, AND WHICH IS NOT UNPLEASANT IN AN OUTER APPEARANCE.
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