| 摘要 |
PURPOSE: A dustproof nose mask is provided to enable a user to breathe clean air always by effectively filtering off dust contained among the contaminated air. CONSTITUTION: The dustproof nose mask consists of cylindrical bodies(10,11) that a diameter of the lower part is larger than that of upper part, which are connected each other by a pair of loops(20). A holding piece(12) is formed respectively to the top plane of the cylindrical bodies and on the other hand, a holding jaw portion(14) is formed respectively inside the lower part thereof. Additionally, a filtering net(30) is installed respectively within the cylindrical bodies.
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