Communication device comprising a mouthpiece

A communication device comprising a mouthpiece intended to be worn in the mouth of a user, the mouthpiece comprising:

• an acoustic conduction plate intended to be bitten by the user;
• a vibrating element configured to convert an audio input into an acoustic output, the vibrating element being coupled to the acoustic conduction plate so as to transmit said acoustic output to said plate;
• a labial portion to accommodate the user's lips,
• a lumen for passing air through the labial portion and formed at least in part by walls of the labial portion, wherein the labial portion is configured so that said walls of the labial portion are deformable between a first configuration in which opposite walls of the labial portion are not in contact, so as to allow air to pass through the lumen, and a second configuration in which the opposite walls of the labial portion are in contact, and wherein exterior surfaces of the labial walls have a concave shape at rest, and
• an armature comprising:
• a first portion intended to be connected to a regulator;
• a second portion connected to the acoustic conduction plate;
• at least one rigid lateral connection arm extending from the first portion to the second portion of the armature;
• and wherein the labial walls extend from the first portion to the second portion of the armature by covering the at least one rigid lateral connection arm, wherein the first portion and/or the second portion comprises an annular section from which the labial walls extend.