| 摘要 |
A mask for preventing dust and poison gas is provided to prevent frost from being formed on a window of a protection tool due to outbreathing, by combining a settling tool to an exhalation exhaust port. A mask(1) for preventing dust and poison gas is composed of: a mask body(10) composed of a filter cartridge(15) exchangeably combined to an inhalation suction port(11) and an exhalation exhaust port, and connected with a binding band(13); a settling tool(20) joined to the exhalation exhaust port; an exhalation exhaust hose(30) combined to one side of the settling tool; a drain tube(21) installed at the lower part of the settling tool to discharge moisture collected in the settling tool; and a fixing clip(16) installed at one side of the mask body to fix the exhalation exhaust hose.
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