| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilation opening tool to prevent penetration of rainwater to a house with sufficient ventilation effected between the inside and the outside of a house wall. SOLUTION: An opening tool body 1 formed in a box-form manner is formed such that ventilation holes 5 are formed in front and rear walls 4 and 7, three partition walls 8, 10, and 12 are arranged on an inner surface area, and the interior of the body is partitioned into four ventilation chambers 9, 11, 13, and 14. The adjoining ventilation chambers 9, 11, 13, and 14 are coupled together through a plurality of ventilation holes 5 formed in the partition walls 8, 10, and 12. The ventilation holes 5 are formed in a state to be deviated to the ends on one side of the two end parts of each of the partition walls 8, 10, and 12, and a ventilation route for air flowing through the opening tool body 1 is formed in a zigzagging state. |
