| 摘要 |
PROBLEM TO BE SOLVED: To provide a showcase capable of increasing a volume of the air for cooling the showcase though a bottom ventilation flue is thinned. SOLUTION: A propeller fan 21 of a blower 20 has an outer diameter larger than a height dimension of the bottom ventilation flue 7, a fan ring 50 along the outer shape of the propeller fan 21 is connected with an opening portion 41a of a baffle plate 41 partitioning the bottom ventilation flue 7 into a fan upstream air trunk 71 and a fan downstream air trunk 73, and the positional relationship between the propeller fan 21 and the fan ring 50 is set so that a dimension at a part positioned at a fan downstream air trunk 73 side with respect to the fan ring 50 is larger than 50% of the height dimension of the entire blade portion 21a, at the blade portion 21a of the propeller fan 21. COPYRIGHT: (C)2009,JPO&INPIT
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