| abstract |
The present invention is a mask structure with an external filter device, which includes a mask body, a one-way airtight valve, at least one connecting pipe and a filter device, wherein the mask main system is made of airtight material, on which will be provided With the one-way airtight valve, the mask body will be connected to the filter device through the connecting tube, so that the mask structure can filter and purify the outside air through the filter device, and transport the filtered air through the connecting tube Into the mask body, the user can inhale, and the air exhaled by the user will be discharged from the one-way airtight valve to the outside of the mask body. |