| 摘要 |
<p>A dust-proof plug is disclosed. A dust-proof plug comprises: a plug main body with an elastic material formed with an inhalation flow path introduced with inhalation air inside, and completely invisibly inserted in the inside of a nose of a user; a first guide protrusion formed on the inner wall surface of the inhalation flow path of the plug main body for firstly introducing and guiding air inhaled inside a nose by protruding at least three; and a second guide protrusion formed on the position separated from the first guide protrusion on the inner wall surface of the inhalation flow path of the plug main body for secondly introducing and guiding inhalation air by protruding at least three.</p> |
