Ventilation For a Portable Electronic Device

摘要

A portable electronic device comprising a casing ( 5 ); a speaker ( 20 ) mounted adjacent an orifice ( 10 ) of the casing ( 5 ); an air permeable membrane ( 25 ) sealingly mounted to the cading ( 5 ) intermediate the orifice ( 10 ) and the speaker ( 20 ), so as to form a chamber ( 35 ) between the speaker ( 20 ) and the membrane ( 25 ); wherein the membrane ( 25 ) permits the ingress and egress of air ( 30 ), into the casing ( 5 ) through the orifice ( 10 ).