Waterproof Sound-Permeable Hood

Abstract

It is an object of the present invention to provide a waterproof sound-permeable hood having excellent waterproofness and excellent sound permeability. The waterproof sound-permeable hood of the present invention is formed of a waterproof material, which hood includes a waterproof sound-permeable means provided on at least one of portions respectively facing to the ears of a wearer who wears the waterproof material, wherein the waterproof sound-permeable means includes a waterproof sound-permeable membrane having a sound-transmission loss of not greater than 5 db.

1 . A waterproof sound-permeable hood formed of a waterproof material, which hood comprises
 a waterproof sound-permeable means provided on at least one of portions respectively facing to the ears of a wearer who wears the waterproof material,   wherein the waterproof sound-permeable means comprises a waterproof sound-permeable membrane having a sound-transmission loss of not greater than 5 db.   
     
     
         2 . The waterproof sound-permeable hood according to  claim 1 , wherein the waterproof sound-permeable membrane comprises at least one porous polytetrafluoroethylene layer. 
     
     
         3 . The waterproof sound-permeable hood according to  claim 1 , wherein the waterproof sound-permeable means comprises at least one protective layer to protect the waterproof sound-permeable membrane. 
     
     
         4 . The waterproof sound-permeable hood according to  claim 3 , wherein the at least one protective layer is firmly attached to the waterproof sound-permeable membrane. 
     
     
         5 . The waterproof sound-permeable hood according to  claim 1 , wherein the waterproof sound-permeable means comprises a holing member having a cylindrical swaging part and a holding part formed on one end of the cylindrical swaging part and wherein the holding member holds the waterproof sound-permeable membrane in the holding part and is fixed to the waterproof material by the cylindrical swaging part. 
     
     
         6 . The waterproof sound-permeable hood according to  claim 5 , wherein the holding member has a gap between the waterproof sound-permeable membrane and the holding part, which gap is sealed with a sealing member.