| 摘要 |
A dustproof mask is provided to increase the surface area of the filter by letting the filter installed in a broadest space inside a user's nose and to increase surface area of the filter by forming the filter to have a semisphere shape. The dustproof mask includes a nippers portion(20), a connection portion(30) and a filter(10). The nippers portion(20) consists of two wings to enclose a septum dividing the two nostrils. The connection portion(30) is installed at the ends of the two wings(21,22). The filter(10) is installed on the connection portion(30). The filter(10) is formed in a semisphere shape. A connection tool is installed on the connection portion(30). The connection tool is inserted into a coupling hole(11) formed in the filter(10). A holding part is formed on the wing of the nippers portion(20). An expansion portion is formed on the circumference of the end of the filter(10).
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