| 摘要 |
PROBLEM TO BE SOLVED: To take in the fresh air indoors without making an inhabitant uncomfortable. SOLUTION: An air supply port 16 is provided with a first air passage 22, a second air passage 24, and an air-mixing path 25. The first air passage 22 is formed by the ring-plate-shaped space between a wall 14 and a circulate-plate- shaped inner guide member 26. The second air passage 24 is formed by the ring-plate-shaped space between the inner guide member 26 and a ring-plate- shaped outer guide member 28. The air-mixing path 25 is formed by the ring- plate-shaped space between the wall 14 and the outer guide member 28 in the outside in the radius direction of the inner guide member 26. The air-mixing path 25 generates an air flow in the second air passage 24 due to the fresh air that flows through the first air passage 22, mixes the fresh air that flows through the first air passage 22 with indoor air that flows through the second air passage 24 for blowing out of an air outlet 20.
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