| 摘要 |
PROBLEM TO BE SOLVED: To provide a face protection mask for field investigation capable of protecting a face of a user fully and safely from risk factors in a course of field investigation by manufacturing a transparent window, which protects a whole face of the user, with reinforced glass or reinforced plastic.SOLUTION: A face protection mask for field investigation comprises a band unit which is worn on the head of a user in a manner surrounding the head and can be adjusted accordingly to the head size of the user, and a transparent window which is installed in the front of the band unit in a manner to be rotatable forward and backward, surrounds the face of the user, and is made of reinforced glass or reinforced plastic to secure rigidity against an external shock. |
