| 摘要 |
PROBLEM TO BE SOLVED: To provide a living room floor structure capable of expecting a sufficient result as measures against house dust. SOLUTION: A plurality of dust pocket grooves 18 are formed in the surface 16A side of a flooring 16. Each of the dust pocket grooves 18 has an upside- down isosceles trapezoid cross section, and the groove width and depth are set in sufficiently large size. Accordingly, house dust such as tick carcass, droppings 24 or the like of mite is dropped into the dust pocket grooves 18 by wind or the like, and it is not blown up until it is absorbed by a cleaner. Inhabitants do not come into contact with house dust accordingly.
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