| 摘要 |
<p>A dehumidifier used to remove moisture from a sealed container by isolating a ventilation passage, which is provided in the sealed container, in a plurality of stages by water-vapor permeable waterproof films so that the interior of the ventilation passage has a gradient of density of vapor, and moving the vapor particles from the interior of the container toward the outside air. A structure provided with a cylindrical member (12a) fixed to a wall of a box (10) and forming a ventilation passage (11) allowing communication between the interior and exterior of the box, and a bottomed multiplex cylindrical ventilation member (2) the walls of which are formed by first and second waterproof films (4a, 4b) having minute water-vapor permeable through holes, the bottomed cylindrical ventilation member (2) being provided in the cylindrical member (12a), whereby the ventilation passage (11) is isolated in three stages from the inner portion of the container (10) toward the outer portion thereof.</p> |
