公开(公告)号：US11706554B2

公开(公告)日：2023-07-18

申请号：US17757172

申请日：2020-12-15

Applicant: GN AUDIO A/S

Inventor： Nuno Beleza Freire ,  Jacob Reimert

IPC: H04R25/00 ,  H04R1/10

CPC classification number: H04R1/1008 ,  H04R1/1058 ,  H04R2201/107 ,  H04R2460/11

Abstract: An earphone comprising a rear chamber and a vent structure. The vent structure comprises



a longitudinal recess in the housing wall, which recess is defined by a bottom wall and recess walls connecting the bottom wall and the housing wall,
a recess opening in the recess, which recess opening connects the recess and the rear chamber,
a mesh device arranged parallel with the bottom wall, whereby a longitudinal recess cavity is provided between the bottom wall and the mesh structure.




The invention also relates to the manufacturing such an earphone.