| 摘要 |
PROBLEM TO BE SOLVED: To prevent a transparent plastic mask main body from being clouded by means of breath by providing the support member of the mask main body and a head part fixing member having a support part which supports the main body in front of a face and also supports the support member to be rotatable in a vertical direction and executing antidim work on the mask main body. SOLUTION: A transparent polycarbonate mask main body 2 is supported by the head part fixing member 3 so as to be rotatable in the vertical direction, the main body 2 itself is supported by the support member 4 and the support member 4 is supported by the support part 5 arranged in the member 3 so as to be rotatable. The member 3 can be adjusted in size by having hook-and- loop fasteners 6 at both end sides to be surely fixed to a head part. The member 3 is fitted to the head part so that the mask main body 2 is held in front of the face and the face is protected from a scattered object. Besides, antidim work is executed by adhering an antidim film to the face side of the main body 2 so that the mask main body 2 is prevented from being clouded by the breath of a worker.
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