| 摘要 |
FIELD: medicine. ^ SUBSTANCE: invention refers to personal protection devices for visual and respiratory organs. A panoramic mask comprises a body with a shutter to ensure tight attachment to a face, a panoramic glass, two taking units arranged on the right and left cheek surfaces of the body, and a built-up valve box with inhalation and exhalation valves. The mask contains a silicon inner mask with the inhalation valves, a headband with smooth belts attached to the body and plastic clasps with rollers. ^ EFFECT: design of the ergonomic mask with good speaking voice transmission and the easy-to-use headband. ^ 2 dwg |
