| 摘要 |
PURPOSE: A ventilation apparatus is provided to completely block foreign materials by securely fixing a filter and to extend the service life of the apparatus by preventing a ventilation cap buried in a device housing from being exposed to the outside. CONSTITUTION: A ventilation apparatus comprises a device housing, a first inclined unit(211), a seat unit(212), and a second inclined unit(213). The first inclined unit is inclined toward an opening unit(210) of the housing. The seat unit is horizontally extended from the bottom end of the first inclined unit. The second inclined unit is extended from the bottom end of the seat unit and is inclined toward the opening of the housing. |
