COMMUNICATION DEVICE WITH A MOUTHPIECE

Description

Scope of the invention

[0001] The invention relates to a mouthpiece, in particular a mouthpiece for a diving regulator, adapted for underwater communication. State of the art

[0002] Communication between two divers is made difficult by the fact that the aquatic environment is a worse conductor of waves than air.

[0003] We are familiar with documents US2012 / 0213034 and US5,706,251A, both describing a mouthpiece for a regulator to be placed in the mouth and including a microphone and a bone conduction earphone that vibrates an acoustic conduction plate to pass the signal through the user's teeth.

[0004] One drawback of this type of device is that bone conduction of the acoustic signal is not optimal. A second drawback is that the captured signal is difficult to understand because the lip portion of the mouthpiece prevents the user from moving their lips sufficiently.

[0005] The invention proposes a mouthpiece that solves the aforementioned drawbacks of the prior art. Summary of the invention

[0006] The invention relates to a communication device according to claim 1, 13 and 14, comprising a mouthpiece intended to be worn in the mouth of a subject comprising an acoustic conduction plate intended to be bitten by the user; and 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.

[0007] The advantage is to conduct the acoustic signal through the diver's teeth to create a bone conduction earphone.

[0008] In one embodiment, the acoustic conduction platform intended to be bitten by the subject comprises a plurality of ridges. An advantage is that the ridges of the platform fill the cavity at the tip of the tooth.

[0009] In one embodiment, the conduction platform includes an elastic coating, and the thickness of the elastic coating at the crest of a ridge is less than the thickness of the elastic coating between two ridges. One advantage is that this provides an ideal compromise between bone conduction and user comfort.

[0010] In one embodiment, the vibrating element is arranged to vibrate in a specific direction; and said vibrating element is encapsulated between at least one or at least two thrust walls arranged to transmit the vibrations of the vibrating element to the acoustic conduction plate in said direction. The direction of vibration is preferably substantially parallel to the plane of the acoustic conduction plate. An advantage is to improve the transmission of the acoustic signal to the plunger teeth while preventing the vibrating element from striking the conduction plate.

[0011] In another alternative mode, the direction of vibration is preferentially substantially perpendicular to the plane of the acoustic conduction plateau.

[0012] In one embodiment, the vibrating element is encapsulated between ▪ a first stop wall arranged to transmit the vibrations of the vibrating element along said direction of vibration to the acoustic conduction plate and ▪ a second wall substantially parallel to the first wall; characterized in that the device comprises a layer of absorbing material between the vibrating element and the second wall.

[0013] In one embodiment, the mouthpiece is a regulator mouthpiece, and includes a microphone to capture the subject's voice.

[0014] In one embodiment, the mouthpiece of the regulator further includes a lip portion to accommodate the user's lips; two air passage lights through the lip portion and a recess in the lip portion between the two air passage lights.

[0015] One advantage is to create a recess roughly in the center of the lip area to improve the freedom of movement of the lips, and thus, improve the intelligibility of the received signal.

[0016] In one embodiment, the microphone is arranged between the openings of the two lights.

[0017] In one embodiment, the mouthpiece of the regulator further includes a lip portion to accommodate the user's lips; and an air passage through the lip portion formed at least in part by the walls of the lip portion.

[0018] In one embodiment, said labial portion of the device is designed such that said walls of the labial portion are deformable between: a first configuration in which the opposite walls of the labial portion are not in contact, so as to allow air to pass through the air passage 6 and a second configuration in which the opposite walls of the labial portion are in contact.

[0019] In one embodiment, the outer surfaces of the labial walls have a concave shape at rest.

[0020] One advantage of concave, deformable lip walls is that they reduce the force the user needs to apply to close their lips. This improves speech intelligibility and user comfort.

[0021] In one embodiment, the device includes a frame comprising: ▪ a first portion intended to be connected to a regulator; ▪ a second portion connected to the acoustic conduction platform; ▪ at least one rigid lateral connecting arm extending from the first portion to the second portion of the frame.

[0022] In one embodiment, the labial walls extend from the first portion to the second portion of the reinforcement, covering the lateral connecting arm.

[0023] In one embodiment, the first portion and the second portion each comprise an annular section from which the labial walls extend.

[0024] In one embodiment, the labial walls are designed to be deformed to accommodate an airflow passing through the air passage opening.

[0025] In one embodiment, the labial portion comprises two opposing labial walls, each intended to be in contact with a lip of the user.

[0026] In one embodiment, the microphone is at least partially integrated into the elastic coating of the ear tip.

[0027] In one embodiment, the earpiece further includes signal transmission means connected to the vibrating element and / or the microphone, such as electronic cables or an electronic conduction ribbon. These transmission means may be at least partially integrated within the elastic coating of the earpiece.

[0028] In one embodiment, the device further includes signal transmission means electrically connected to the vibrating element and / or the microphone by an electrical conduction mat, in which the electrical conduction mat is glued to an armature comprising the conduction plate and covered by overmolding with an elastic coating. Detailed description of the invention

[0029] An embodiment of the invention is described below with reference to the figure 1 This figure represents the frame of a mouthpiece for a regulator intended to be placed in a user's mouth, shown in perspective. The elastic coating is not shown in this figure for clarity. Frame

[0030] The mouthpiece 1 includes a frame 2.

[0031] The frame 2 preferably includes an elastic coating (not shown). The elastic coating advantageously improves user comfort. Preferably, the elastic coating is obtained by overmolding the frame.

[0032] The frame includes a first connecting portion 6 intended to cooperate with equipment such as a diving regulator. Preferably, this first portion 6 has an annular shape.

[0033] The armature further includes at least one, preferably two conduction plates 20 intended to be bitten by the user.

[0034] The first portion 6 of the frame is mechanically connected to by at least one lateral arm 24. This connection advantageously ensures the rigidity of the mouthpiece between the intraoral part (second portion) and the part connected to the regulator (first portion).

[0035] The mouthpiece 1 includes a lip portion 42. The lip portion 42 is intended to be covered by the user's lips during use. This lip portion 42 includes a vent 6 allowing air to pass through on either side of the lip portion. Advantageously, this vent 6 allows air to pass from the regulator channel to the user's mouth during use. The lip portion 42, in conjunction with the user's lips, creates a tight seal between the external environment and the vent 6.

[0036] Preferably, the labial portion is arranged between the first portion of the frame 23 and the conduction plates 20.

[0037] The labial portion 42 extends between a breathing zone comprising the acoustic conduction plates 20 and a connection means 43. The connection means 43 advantageously allows the mouthpiece to cooperate with a diving regulator. Preferably, the connection means 43 is tubular in shape with rigid walls.

[0038] As illustrated on the figure 1 , the means of connection forms, with the armature 2, a single piece and can be connected to each other by one arm 24 or two arms 24.

[0039] As illustrated on the Figure 10 The frame may include a second annular portion 27 defining the opening of the light 6 allowing the passage of air. The labial portion is then defined between the first portion 6 and the second portion 27.

[0040] The frame may further include a connecting bar 25 between the two arms 24. This connecting bar, in an illustrated embodiment figure 1 includes a slot to receive the microphone 5.

[0041] In another alternative embodiment illustrated on the Figure 10 , the frame includes a location 51 to receive the microphone arranged on a lateral side of one of the conduction plates 20.

[0042] The coating may include an overmolding of the frame 2. In particular, the overmolded coating may include labial walls 41 intended to be placed between the teeth and lips of the user.

[0043] The mouthpiece 1 may include a slot 26. The slot 26 may extend along a connecting means 43. The slot 26 advantageously allows the cross-section of the connecting means 43 to be deformed, for example to enable cooperation with different regulator models.

[0044] The air passage 6 thus extends through the labial portion 42 and through the connecting means 43.

[0045] The frame 2 includes at least one acoustic conduction plate 20. The acoustic conduction plate 20 is arranged so as to be bitten by the user wearing the mouthpiece 1. Vibrating element

[0046] The mouthpiece 1 further includes a vibrating transducer-type element. The vibrating element is connected to the conduction plate in such a way as to transmit the vibrations of the vibrating element to the acoustic conduction plate.

[0047] The vibrating element 3 is configured to convert an audio input into an acoustic output and to couple acoustically to the upper and / or lower teeth of the diver to conduct the acoustic output from the upper teeth of the diver through the skull to propagate the acoustic signal to the inner ear of the diver via the bones of the skull and jaw when the diver wears the mouthpiece in the mouth. Bone conduction with the user

[0048] The acoustic conduction plate 20 is designed and arranged to acoustically couple to the user's upper teeth to conduct the acoustic output of the diver's upper teeth through the skull to the cochlea in order to generate an audible sound in at least one of the diver's inner ears when the diver wears the mouthpiece 1.

[0049] The acoustic conduction plate 20 is configured to engage and couple acoustically to the surface of the diver's teeth and is configured to conduct the vibrations of the vibrating element 3 in response to an electrical signal. The vibration of the vibrating element 3 produces an acoustic output signal that is conducted acoustically to the diver's teeth, via the acoustic conduction plate, and then through the bones of their jaw and skull to the inner ear, including the cochlea, where it is perceived as sound.

[0050] The material of the acoustic conduction plate 20 may include a ceramic, a metal or metal alloy, or a polymer material such as a resilient polymer. The acoustic conduction plate may have a size and shape that allows acoustic coupling with one or more teeth of the plunger.

[0051] In particular embodiments, the acoustic conduction plate 20 may have a curved horizontal shape corresponding in part to the curvature of the diver's dental arches to facilitate contact of the acoustic conduction plate 20 with several teeth.

[0052] The acoustic conduction plate 20 may also have one or more raised ridges, bumps, or other features 21 configured to improve acoustic coupling and conduction with the plunger teeth. In particular embodiments, the ridges or bumps 21 may be positioned to contact the central depressions of the plunger teeth.

[0053] The acoustic conduction platform 20 preferably includes a coating of an elastic material to improve user comfort.

[0054] The thickness of said coating at the top of a block 21 is preferably less than the thickness of the coating between two blocks 21.

[0055] Different thickness profiles of the 610 coating layer are shown on the Figures 6 to 8B representing a cross-section of a tip 1 along a plane perpendicular to the surface of the conduction plate 620. These figures illustrate the reinforcement of the conduction plate 620 comprising studs or ridges 621. The coating layer preferably comprises an elastic material. Preferably, the conduction plate 620 includes flat or substantially flat portions 622 between two studs 621.

[0056] The pads 621 shown have a concave shape. The pads can also have a spherical or hemispherical shape, a cylindrical or rectangular shape protruding from the surface 622 of the conduction plate 620. The spherical or concave shape advantageously allows cooperation with the groove of a tooth.

[0057] In a first example illustrated on the figure 6 , the coating layer includes the coating thickness 611 in contact with the pad 621 which is less than the coating thickness 612 in contact with the surface 622 of the conduction plate 620.

[0058] Preferably, the thickness of coating 611 in contact with stud 621 is 2 to 10 times less than the thickness of coating 612 in contact with surface 622 between two studs 621.

[0059] In this first example, the outer surface of the coating layer 610 is convex at the studs 621.

[0060] One advantage of this profile is finding a good compromise between the quality of bone conduction of the signal from the vibrating element and the comfort in the user's mouth.

[0061] In a second example illustrated on the figure 7 , the 723 vertex of the 621 pad protrudes through the 610 coating layer. The thickness of the coating layer in an area including the 723 vertex of the 6+21 pad is then zero.

[0062] The thickness of the coating layer 610 decreases until it becomes zero at the top 723 of the plot 621.

[0063] In this example, the coating layer 610 preferentially forms a flat or substantially flat surface through which the studs 621 of the conduction plate 620 protrude.

[0064] One advantage of this embodiment is to optimize the quality of bone conduction.

[0065] In a third example illustrated on the figure 8AThe apex 823 of the block 621 is flush with the surface of the coating layer 610. The thickness of the coating layer 610 at the apex of the block is then zero or substantially zero. Preferably, the thickness of the coating layer 812 between two blocks 621 is equal to or substantially equal to the height of a block 621. In another alternative mode not shown, the thickness of the coating layer between two blocks is less than the height of the apex of a block 823.

[0066] In a fourth example illustrated on the figure 8B , the coating layer 610 has a flat or substantially flat surface and the thickness of the coating layer above the top of the studs 923 is less than the thickness of the coating layer between two studs 912.

[0067] One advantage of this third example is to obtain a better compromise between the quality of bone conduction between the 620 plate and the user's teeth and the user's comfort in which the quality of bone conduction is prioritized.

[0068] The coating layer comprises an elastic material. Here, the term "elastic" should be understood in contrast to the rigidity of the conduction plate. In other words, the Young's modulus of the coating layer material is lower than that of the conduction plate material.

[0069] Preferably, the coating layer comprises a silicone plastic material, also called polysiloxane, such as polydimethylsiloxane (known by the acronym "PDMS") or one of its derivatives. Alternatively, the coating layer may comprise a thermoplastic elastomer-based material such as polyurethane. Such a material is advantageously biocompatible and easy to use in overmolding.

[0070] The armature includes a rigid plastic material allowing the conduction of the signal emitted by the vibrating element.

[0071] Preferably, the reinforcement is made of polypropylene (PP), acrylonitrile butadiene styrene (ABS), or one of their derivatives. These two materials advantageously allow for chemical bonding with a silicone-based coating layer. This chemical bonding increases the seal between the reinforcement and the coating layer. Thermoplastic elastomer-based materials are particularly well-suited for chemically bonding with PP or ABS reinforcement.

[0072] In one embodiment, the hardness of the reinforcement is between 10 and 30 shore A.

[0073] In one embodiment, the vibrating element 3 is arranged to vibrate in a vibration direction A. The vibrating element 3 is then encapsulated between at least two walls 31 along the vibration direction A, allowing the vibrations of the vibrating element to be transmitted to the acoustic conduction plate 20. Preferably, and as illustrated in the figures 1 and 2 the direction of vibration A is substantially parallel to the plane of the acoustic conduction platform 20.

[0074] In an embodiment illustrated on the figure 5 The vibrating element is encapsulated, in its direction of vibration A, between a stop wall 31 and a second wall 32. In this mode, the device includes a layer of absorbing material 33 arranged between the vibrating element 3 and the second wall 32. The absorbing material 33 is designed to dampen the shocks between the vibrating element 3 and the second wall.

[0075] The absorbent material includes, for example, a foam or an elastomer.

[0076] By vibrating, the vibrating element 3 will hit against the stop wall 31 allowing the vibrations of the vibrating element 3 to be transmitted to the conduction plate.

[0077] The advantage of the absorbent material layer 33 is that it reduces vibration transmission between the vibrating element 3 and the conduction plate 20 through the second wall 32. The absorbent material layer advantageously creates a space in which the vibrating element has sufficient room to vibrate while remaining in direct contact with a wall to transmit vibrations to the conduction plate. The absorbent material thus allows the vibrating element to have at least one degree of freedom relative to the wall. The absorbent material also ensures that the material remains in contact with the abutment wall when the vibrating element is at rest.

[0078] Furthermore, the absorbing material advantageously reduces a phase shift effect between the vibrations transmitted to the conduction platform by the stop wall 31 and the second wall 32.

[0079] Another advantage is also to create a restoring force towards the abutment wall 31 and the displacement between the two walls in a simpler, more reliable and less expensive way than in the prior art.

[0080] In an alternative embodiment, the vibration direction A can be perpendicular to the plane of the acoustic conduction plate 20. Microphone

[0081] The mouthpiece 1 further includes a microphone 5. The microphone 5 generates an electrical signal that is a function of the diver's voice. The microphone 5 can be at least partially integrated into the elastic coating of the frame 2 and can be protected by at least one protective wall arranged frontally to the microphone sensor. The protective wall advantageously reduces the difficulties of integrating the microphone into the coating during the overmolding step of the frame. Indeed, the protective wall protects the sensor from the overmolding. In one embodiment, the microphone, or at least its sensing face, is encased in a protective layer. The protective layer advantageously protects the sensing face of the microphone and prevents its perforation during the overmolding of the frame with the elastic material to form the coating layer.

[0082] Preferably, the microphone is enclosed in a receptacle 51 of the armature, said receptacle comprising at least one face protecting the microphone's pickup face during overmolding of said armature.

[0083] The mouthpiece 1 may further include signal transmission means connected to the microphone 5 and / or the vibrating element 3. The transmission means may include electronic cables and / or a conductive ribbon. These transmission means may be at least partially integrated into the elastic coating of the frame.

[0084] In one embodiment, the transmission means include a conduction layer. In an example illustrated on the Figure 10The conduction ribbon 28 is electrically connected to the microphone 5. The conduction ribbon is also connected at least to the vibrating element 3. The conduction ribbon is also connected to a remote communication device 70. For example, the conduction ribbon can be connected to an electrical cable electrically connecting the conduction ribbon 28 to the remote communication device 70.

[0085] The conductive layer is designed to be positioned on the reinforcement before being covered with a coating layer along with the reinforcement during the overmolding step. Preferably, the conductive layer is attached to the reinforcement with an adhesive layer such as glue. Most preferably, the conductive layer has an adhesive side. The adhesive side may be covered with a protective film. To perform the assembly, the protective film is removed, and the layer is adhered to the reinforcement, keeping the adhesive side of the layer against the reinforcement. In a final step, the reinforcement, including the conductive layer, is overmolded with the coating layer. This manufacturing process is advantageously faster, more reliable, and less expensive.

[0086] As depicted on the Figure 10, the conduction sheet has a geometry to at least partially surround the first portion 23 of the armature and to run along the arms 24 of the armature to the microphone and / or to the vibrating element arranged at the level of the conduction plate 20.

[0087] The remote communication device 70 may include any device capable of transmitting and / or receiving a signal, particularly in a marine environment. Without limitation, the remote communication device 70 may include an acoustic communication device, a radio communication device, a Bluetooth device, or a Wi-Fi device. Lights of passage air

[0088] A second embodiment of the invention is described below with reference to the figure 2 and the figure 3 .

[0089] There figure 2 is a perspective view of a tip according to a second embodiment of the invention, and in which the coating is not shown for the sake of clarity.

[0090] There figure 3 is a perspective view of a tip according to the second embodiment of the invention, and in which the coating is represented.

[0091] The mouthpiece 1 according to this second embodiment of the invention is similar to the mouthpiece of the first embodiment. However, the lip portion 42 comprises two air passages (61 and 62) instead of one. Furthermore, the lip portion 42 includes a recess 63 between the two openings 61 and 62. This recess 63 advantageously allows greater freedom of movement for the diver's lips and thus improves the intelligibility of speech recorded by the microphone. The recess 63 can be through-hole, meaning that the recess 63 between the two openings is located on the other side of the lip portion 42. In this embodiment, the mouthpiece advantageously allows contact between the diver's upper and lower lips, further increasing the intelligibility of speech recorded by the microphone 5 of the mouthpiece.

[0092] Preferably, the recess is arranged so as to be opposite the center of the lips of a user wearing mouthpiece 1.

[0093] In an alternative embodiment illustrated on the figure 4 , the tip 1 includes a single air passage light 6 and the labial portion 42, between the labial stop 43 and the connection means 43, has a deformable section. Deformable lip portion

[0094] There figure 4 is a perspective view of the device according to a third embodiment of the invention.

[0095] In this mode, the deformable section of the labial portion allows a displacement of the labial walls 421 of the labial portion 42 between a first configuration in which the opposite walls of the labial portion are not in contact, so as to allow air to pass through the air passage 6 and a second configuration in which the opposite labial walls 421 of the labial portion are in contact.

[0096] The first configuration can be obtained by the pressure of air through the light during the subject's inspiration or expiration, pushing the walls of the labial portion in opposite directions.

[0097] The second configuration can be obtained by the pressure of the lips, in particular on the labial walls 421 on either side of the labial portion until contact between the two opposite walls.

[0098] The labial portion is designed to allow passage between the first and second by elastic deformation of these labial walls 421.

[0099] This deformation advantageously allows greater freedom of movement for the diver's lips, thus improving the intelligibility of speech recorded by the microphone. In this embodiment, the mouthpiece advantageously allows indirect contact between the diver's upper and lower lips, further increasing the intelligibility of speech recorded by the mouthpiece's microphone 5.

[0100] There figure 9 represents a cross-sectional view of a nozzle according to another embodiment.

[0101] In this embodiment, the labial walls extend from the first portion 23 of the frame to the second portion 27 of the frame, thus forming the opening 6 allowing the passage of air. Preferably, the first portion 23 and the second portion 27 comprise an annular or tubular cross-section, and the labial wall extends from said annular cross-section of both portions (the first and the second portion).

[0102] Preferably, the labial walls 421 are arranged around the lateral arms (which thus serve as mechanical support for the flexible labial walls.

[0103] Preferably, the labial walls 421 have a concave shape at rest from the outside of the tip. In other words, the spacing between the two labial walls has a decreasing or strictly decreasing profile from the first portion 23 of the frame and from the second portion up to a point of inflection (for example in the middle of the segment between the first portion and the second portion).

[0104] To achieve this shape, the length of each lip wall is greater than the distance between the first and second portions. This allows the user to deform the lip portions while reducing the force required. Part of the wall displacement is achieved without elastic deformation of the wall.

[0105] The labial walls that allow such a shape to be achieved can be created by molding.

[0106] An armature such as described above is placed in a molding system illustrated on the figure 12 .

[0107] The molding system is designed to mold a thermoelastic plastic material between the first portion 23 and the second portion 27 of the reinforcement. The reinforcement, as described above, is placed between two main molds 121 and 122 designed to receive said reinforcement.

[0108] Two additional molding pieces 123 and 124, not attached to each other, are inserted between the two portions 23, 27 of the frame, one facing the other, to form the air passage opening.

[0109] Preferably, these two additional molding pieces 123, 124 are in contact with each other to form two concave surfaces extending from the first portion 23 of the frame to the second portion 27 of the frame. These concave surfaces cooperate with complementary surfaces of the main molds 121 and 122 to form the labial walls 421 by injection of plastic material.

[0110] The two additional molds 123, 124, inside the air passage light, are not fixed together so that each additional mold can be removed from one side of the air passage light.

[0111] Preferably, the additional molds are in contact with each other at a point where the height of the light section is lowest.

[0112] This advantageously allows the removal of each mold from a different side of the air passage after injection.

[0113] The invention thus aims to protect a method of manufacturing a mouthpiece as described above.

[0114] The invention also relates to any type of communication device intended to be inserted into a subject's mouth. The mouthpiece is not limited to diving regulator mouthpieces. For example, the mouthpiece of a communication device according to the invention could be a mouthguard.

Claims

1. Communication device comprising a mouthpiece (1) intended to be worn in the mouth of a subject comprising: ▪ an acoustic conduction plate (20) intended to be bitten by the user; and ▪ a vibrating element (3) configured to convert an audio input into an acoustic output, the vibrating element (3) being coupled to the acoustic conduction plate (20) so as to transmit said acoustic output to said plate (20); wherein the device further comprises: ▪ a labial portion (42) to accommodate the user's lips; ▪ a lumen (6) for passing air through the labial portion (42) and formed at least in part by the walls of the labial portion (42); characterized in that, the labial portion (42) is designed so that said walls (421) of the labial portion are deformable between a first configuration in which the opposite walls of the labial portion are not in contact, so as to allow air to pass by the air passage lumen 6 and a second configuration in which the opposite walls of the labial portion are in contact, and in which the exterior surfaces of the labial walls (421) have a concave shape at rest.

2. Device according to claim 1, characterized in that the acoustic conduction plate (20) intended to be bitten by the subject comprises a plurality of ridges (21), wherein the conduction plate (20) comprises an elastic coating and the thickness of the elastic coating at a top of a ridge (21) is less than the thickness of the elastic coating between two ridges (21).

3. Device according to one of the preceding claims, wherein the vibrating element (3) is arranged to vibrate in a vibration direction (A); said vibrating element being encapsulated between: ▪ a first stop wall (31) arranged to transmit the vibrations of the vibrating element (3) in said vibration direction (A) to the acoustic conduction plate (20) and ▪ a second wall (32) substantially parallel to the first wall; characterized in that the device comprises a layer of absorbent material (33) between the vibrating element and the second wall (32); said absorbent material (33) being designed to absorb chocs between the vibrating element (3) and the second wall (32).

4. Device according to one of the preceding claims, wherein the mouthpiece (1) is a regulator mouthpiece, and characterized in that it further comprises a microphone (5) for capturing the voice of the subject.

5. Device according to claim 4, wherein the regulator mouthpiece (1) further comprises: ▪ a labial portion (42) to accommodate the user's lips; ▪ two lumens (61, 62) for passing air through the labial portion (42); in which said labial portion (42) comprises a recess (42) between the two air passage lumens (61, 62).

6. Device according to claim 5, wherein the microphone (5) is arranged between the openings of the two lumens (61, 62).

7. Device according to any of claims 1 to 6, characterized in that the device comprises an armature comprising: ▪ a first portion (23) intended to be connected to a regulator; ▪ a second portion (27) connected to the acoustic conduction plate (20); ▪ at least one rigid lateral connection arm (24) extending from the first portion (23) to the second portion (27) of the armature; and in that the labial walls (421) extend from the first portion (23) to the second portion (27) of the armature by covering the lateral connection arm (24).

8. Device according to claim 7 wherein the first portion (23) and the second portion (27) each comprise an annular section from which the labial walls (421) extend.

9. Device according to any of claims 1 to 8, wherein the labial walls are designed to be deformed to adapt to an air flow passing through the air passage lumen.

10. Device according to any of claims 1 to 9, wherein the labial portion comprises two opposite labial walls, each intended to be in contact with a lip of the user.

11. Device according to claim 4, wherein the microphone (5) is at least partially integrated into the elastic coating of the mouthpiece.

12. Device according to claim 4, further comprising signal transmission means electrically connected to the vibrating element and / or to the microphone by an electrical ribbon cable (28), in which the electrical conduction sheet is bonded to an armature comprising the conduction plate and covered by overmolding with an elastic coating.

13. Communication device comprising a mouthpiece (1) intended to be worn in the mouth of a subject comprising: ▪ an acoustic conduction plate (20) intended to be bitten by the user; and ▪ a vibrating element (3) configured to convert an audio input into an acoustic output, the vibrating element (3) being coupled to the acoustic conduction plate (20) so as to transmit said acoustic output to said plate (20) wherein the vibrating element (3) is arranged to vibrate in a vibration direction (A); characterized in that said vibrating element is encapsulated between: ▪ a first stop wall (31) arranged to transmit the vibrations of the vibrating element (3) in said vibration direction (A) to the acoustic conduction plate (20) and ▪ a second wall (32) substantially parallel to the first wall; characterized in that the device comprises a layer of absorbent material (33) between the vibrating element and the second wall (32); said absorbent material (33) being designed to absorb chocs between the vibrating element (3) and the second wall (32).

14. Communication device comprising a mouthpiece (1) intended to be worn in the mouth of a subject comprising: ▪ an acoustic conduction plate (20) intended to be bitten by the user; and ▪ a vibrating element (3) configured to convert an audio input into an acoustic output, the vibrating element (3) being coupled to the acoustic conduction plate (20) so as to transmit said acoustic output to said plate (20) ▪ a microphone (5) for capturing the voice of the subject. ▪ a labial portion (42) to accommodate the user's lips; characterized in that it further comprises two lumens (61, 62) for passing air through the labial portion (42); in which said labial portion (42) comprises a recess (42) between the two air passage lumens (61, 62), and in that the microphone (5) is arranged between the openings of the two lumens (61, 62).