| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of a fan cover for preventing cooling of a fan motor of a convective fan, and attachment of dust. SOLUTION: An air distribution passage 4 communicating an indoor air intake port 2 formed on a back face of a frame body 1 and a hot air supply opening 3 formed on a front face of the frame body 1 is formed in the frame body 1, the fan cover 6 having a number of vent holes 6a is attached to the indoor air intake port 2, the fan motor 5a of the convective fan 5 is disposed inside of the frame body 1 of the fan cover 6, and the indoor air supplied into the air distribution passage 4 from the vent holes 6a by the convective fan 5 is supplied from the hot air supply opening 3 as the air of high temperature. The fan cover 6 is provided with a projecting portion 7 forming a space A with respect to the fan motor 5a, and an air guide projecting portion 8 radially extending continuously from the projecting portion 7, the projecting portion 7 is provided with an air circulation hole 7a communicating the outside air and the space A, and the air flowing into the space A from the air circulation hole 7a forms airflow toward the air distribution passage 4 along the air guide projecting portion 8, so that the cooling of the fan motor 5a and the attachment of dust can be prevented by the airflow. COPYRIGHT: (C)2008,JPO&INPIT
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