| 摘要 |
PURPOSE: A dust mask is provided to attach a cotton layer to a contact device with a worker's face for better touch, to replace the contact device and to embed a far infrared ray generator in the rear side for the smooth circulation of the artery and the vein of a back head portion. CONSTITUTION: A contact device (5) is combined with an opposite contact portion of a dust mask (1). A filter (2) is installed in the dust mask and a cotton layer is attached to the outer face of a fastening part. A bioceramic far infrared ray generator (11) is embedded into a joint (10) of a band (8) for the circulation of blood. The filter filters dust or bad smell to protect a worker from hazardous circumstances. The fastening part of the contact device is able to be replaced. Due to the cotton layer, the skin of the worker is protected with better touch.
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