To provide a barn with a structure which is used in a cold district and in which water droplets are difficult to accumulate on the attic.SOLUTION: In a barn bar having a roof having a straight ridge and a wall extending parallel to the ridge and having a window, the ridge portion is an elongated opening portion extending linearly, the rim of the ridge portion A small wall 22 with good sealability is extended, a small roof 23 with good airtightness is hung on the small wall 22, and a plurality of ventilation fans are provided on the small roof 23 at a predetermined pitch. The air beneath the roof 14 is temporarily collected under the small roof 23 and then discharged by the ventilator 30. That is, since the air flow can be averaged by the small roof 23 and the small wall 22, occurrence of the air stagnation 36 shown can be suppressed.(FIG.【課題】寒冷地で使用する畜舎であって、屋根裏に水滴が溜まりにくい構造の畜舎を提供する。【解決手段】直線状の棟部を有する屋根14と、棟部に平行に延びると共に窓を有する壁とを備える畜舎において、棟部が直線状に延びる細長い開口部とされ、この開口部の縁から上へ密閉性のよい小壁22が延ばされ、小壁22の上に密閉性のよい小屋根23が掛けられ、この小屋根23に所定ピッチで複数個の換気扇が設けられる。屋根14下の空気が一旦小屋根23の下に集められ、その後に換気扇30で排出される。すなわち、小屋根23と小壁22とにより、空気の流れを平均化できるため、示す空気の淀み36の発生を抑えることができる。【選択図】図5
