| 摘要 |
PURPOSE: A dusk mast is provided to prevent fogging of goggles due to breath. CONSTITUTION: A dusk mast comprises a pad part(2), a filter section fixture(3), and a disposable filter section(4), and an exhaust valve(8). The pad part heat press molds a sheet along a face shape. Inside and outside of the pad part, a pad inner wing and a pad outer wing part are installed. In the sheet, a polyurethane film and a spandex cloth are adhered. Curvatures are formed in dorsum nasal part, a part between the dorsum nasal and a cheekbone, a cheekbone part, cheek part, and a jaw part of the pad part. Inside and outside vane part of the filter section fixture and the pad part are thermally bonded and form an air cushion.
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