Face mask (filtering type, can be used for talking, security mask)

Abstract

1. Name of the product in this design: Mask (Filter-type vortex cavity speaking security mask). 2. Purpose of this design: For dust prevention and air filtration. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. Other situations requiring explanation: In the rear view, point A is the exhaust port of the exhaust channel; in the top view, point B is the nasal breathing port on the nasal plug; in the 3D view, point C is the air intake port of the air intake channel.

Images