| 摘要 |
<p>PURPOSE: A ventilation device for a window is provided to allow a user to easily change a filter as a filter case is opened in a maximum opening range of the angle of vertical 180 degrees while not being separated from a main body. CONSTITUTION: A ventilation device for a window comprises a main body (100) and a filter case. An insertion unit is arranged in the lower part of the filter case, and a hanging groove vertically fitted in or pulled out from a hanging protrusion is included on the upper part. The insertion unit accommodates a hinge shaft and supplies space capable of rotation or movement at a predetermined distance around the hinge shaft in the front and rear directions of the filter case. A separation preventing protrusion is formed on the insertion unit and comes out from the insertion unit when a predetermined power is applied.</p> |
