The present invention can be easily mounted in the event of a disaster, moreover, protective mask, which can be reliably alleviate at least intrusion into the body of a toxic gas and smoke by simply mounting, and, of protective masks to detect the disaster to provide a protective mask unit to reliably inform the storage location. A protective mask 1 comprises the substrate 2 of a flexible, formed by fire protection material, a visible part 7, a breathing unit 10, and the head protecting portion 30, a breathing unit is provided with a filter unit 11 to reduce the intrusion into the body of a toxic gas and smoke, the filter unit is provided with a separator 17 where the filter function is activated by removing, through the filter unit to remove the separator at the time of use protection the air in the mask inside and outside to flow freely formed with each other. Protective masks unit, and disaster detectors disposed on a ceiling or the like of a building, a lighting type alarm which is disposed a storage location near the protective mask, in constructed.FIELD 1
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