Filtering nose mask
A technology of nasal mask and filter sleeve, which is applied in the direction of breathing filter, life-saving equipment, respiratory protection container, etc., can solve the problems of fogging of spectacle lenses, affecting the wearing effect, and sultry wearing, etc., and achieve the effect of improving aesthetics.
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[0028] Such as figure 1 , 2 , shown in 3, a kind of filtering nasal mask, comprises half shell 1, front shell 7, air filtering assembly 3 and airtight air channel assembly, forms cavity between front shell 7 and half shell 1, in the cavity An air filter assembly 3 is provided, and a vent hole 2 is opened on the half shell 1, and the vent hole 2 communicates with the air filter assembly 3, and the air filter assembly 3 communicates with the airtight air channel assembly. There is a closed air passage between the back of the half-shell and the face, creating a certain distance, so there will be no stuffy feeling when wearing it. The half shell and the air filter assembly can be a combination of two air filter devices arranged symmetrically on the left and right Such as figure 1 , it can also be an air filter device with left and right symmetry Such as figure 2 .
[0029] Such as Figure 4 As shown, the airtight air channel assembly includes a support, a movable in...
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