CN115242908A - Loudspeaker device and terminal equipment thereof - Google Patents

Abstract

The disclosure relates to a horn device and a terminal device thereof, wherein the horn device is arranged on the terminal device and comprises a horn single body; the sound transmission channel is used for communicating the loudspeaker monomer in the terminal equipment with the outside of the terminal equipment; a dust-proof part arranged in the sound transmission channel; the sound transmission channel comprises a first channel and a second channel, the first channel is communicated with the second channel, and the dustproof portion is arranged between the first channel and the second channel. The form of the dust-proof part in the present disclosure is not limited, and the dust-proof part may be provided at any position of the sound transmission channel as long as the dust-proof part can shield the sound transmission channel. Simultaneously, set up the dustproof portion in the transaudient passageway, the dustproof portion has played the effect of separation foreign object, further protects the loudspeaker monomer in the terminal equipment.

Description

Horn device and terminal equipment thereof

Technical Field

The present disclosure relates to the field of mobile terminal technologies, and in particular, to a speaker device and a terminal device thereof.

Background

With the progress of society, terminal devices such as mobile phones have become one of indispensable items. The functions of the terminal equipment are more and more abundant, communication of people is facilitated, a daily payment function can be provided for a user, and great convenience is brought to life of people.

Some through holes can be formed in the terminal equipment so as to meet different requirements. For example, sound waves of a speaker unit in the terminal device need to be propagated to the outside through the through hole. And terminal equipment's use scene is very miscellaneous, and foreign matter such as external dust or steam enters into loudspeaker department through this through-hole easily, causes the interference for loudspeaker monomer to influence the life of loudspeaker device or other devices.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a speaker device and a terminal device thereof.

According to a first aspect of the embodiments of the present disclosure, there is provided a speaker device installed in a terminal device, the speaker device including:

a horn unit;

the sound transmission channel is used for communicating the loudspeaker unit in the terminal equipment with the outside of the terminal equipment;

a dust-proof portion provided in the sound transmission channel;

wherein, the sound conduction passageway includes first passageway and second passageway, first passageway with the second passageway intercommunication, the dust-proof part set up in between first passageway with the second passageway.

Optionally, the first channel extends along a planar direction of the terminal device, and a preset included angle is formed between the first channel and the second channel along a thickness direction of the terminal device; and the plane direction of the terminal equipment is parallel to the display screen of the terminal equipment.

Optionally, when the preset included angle is a first preset included angle, the second channel extends towards the side direction of the terminal device;

and when the preset included angle is a second preset included angle, the second channel extends towards the display screen of the terminal equipment.

Optionally, the dust-proof part includes a first dust-proof layer and a second dust-proof layer, and the first dust-proof layer and the second dust-proof layer are sequentially arranged along the extending direction of the sound transmission channel;

the first dustproof layer is positioned on one side, far away from the horn unit, of the second dustproof layer.

Optionally, the first dust-proof layer comprises a dust screen, and the second dust-proof layer comprises a waterproof and breathable film; or,

the first dustproof layer comprises a waterproof breathable film, and the second dustproof layer comprises a dustproof net.

Optionally, the horn device further includes a connecting bracket disposed between the first dust-proof layer and the second dust-proof layer, and the first dust-proof layer and the second dust-proof layer are connected to the connecting bracket respectively.

Optionally, the speaker device further includes a mounting bracket installed in the terminal device, and the mounting bracket and a housing of the terminal device enclose to form the sound transmission channel.

Optionally, the mounting bracket comprises a first bracket disposed on the housing to cover the second channel;

the first support is provided with at least one sound outlet channel, and the at least one sound outlet channel is communicated with the second channel.

Optionally, the mounting bracket further comprises a second bracket connected to the first bracket, and the sound transmission channel is formed between the second bracket and the housing.

Optionally, the first support comprises a first sub-support and a second sub-support, and the first sub-support and the second sub-support are detachably connected.

Optionally, the loudspeaker device still includes the third dust layer, the third dust layer set up in first sub-bracket with between the second sub-bracket, first sub-bracket with the second sub-bracket respectively with the third dust layer is connected, in order to separate the sound channel.

According to a second aspect of the embodiments of the present disclosure, there is provided a terminal device including a housing, and the horn device as described above mounted to the housing.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the form of the dust-proof part in the present disclosure is not limited, and the dust-proof part may be provided at any position of the sound transmission channel as long as the dust-proof part can shield the sound transmission channel. Simultaneously, set up the dustproof portion in the transaudient passageway, the dustproof portion has played the effect of separation foreign object, further protects the loudspeaker monomer in the terminal equipment.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a partial schematic diagram of a terminal device shown in accordance with an example embodiment.

Fig. 2 is a schematic view of a horn device shown according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The terminal equipment is usually provided with a loudspeaker unit, so that the terminal equipment has the function of outputting audio information. When the speaker unit is disposed at the upper portion of the display screen side of the terminal device, it can be used as a handset. In order to ensure that a user can receive sound waves, a plurality of sound emitting channels are formed in the display screen side of the terminal device, and the sound waves can be transmitted to the outside of the terminal device through the sound emitting channels.

In the related art, some manufacturers set a dust screen to cover the sound channel to isolate external dust and other foreign objects. The dust screen passes through the dust screen support mounting in the surface of sound channel, but, along with terminal equipment's iteration upgrading afterwards, the structure of dust screen support is more and more complicated, and the dust screen is in order to imitate the structure of dust screen support, has promoted the complexity of dust screen, and then leads to cost of manufacture and assembly cost to rise.

Meanwhile, along with the improvement of the tone quality of the terminal equipment, the caliber of the sound outlet channel is larger and larger. Under the constantly changing of use scene, set up the mode on the surface of vocal passageway with the dust screen, isolated effect is not good, can't satisfy user's user demand.

The disclosure provides a horn device, which is installed on a terminal device. The horn device comprises a horn single body, a sound transmission channel and a dustproof part. The sound transmission channel is used for communicating the loudspeaker unit in the terminal equipment with the outside of the terminal equipment. The dustproof portion is arranged in the sound transmission channel, the sound transmission channel comprises a first channel and a second channel, the first channel is communicated with the second channel, and the dustproof portion is arranged between the first channel and the second channel. The form of the dust-proof portion in the present disclosure is not limited, and the dust-proof portion may be provided at any position of the sound transmission channel as long as the sound transmission channel can be shielded. Simultaneously, set up the dustproof portion in the transaudient passageway, the dustproof portion has played the effect of separation foreign object, further protects the loudspeaker monomer in the terminal equipment.

In an exemplary embodiment, as shown in fig. 1-2, a speaker unit is mounted to a terminal device. The terminal device is, for example, a mobile phone, a tablet computer, a portable wearable device terminal, and the like.

In one example, when the terminal device is a mobile phone, the speaker device may be disposed on an upper side portion of the mobile phone, for example, and used as an upper sound source of the mobile phone to implement a sound amplifying function or an earphone function of the mobile phone. Or, the speaker device can also be arranged at the lower side part of the mobile phone and used as a lower sound source of the mobile phone to realize the sound amplifying function or the sound receiving function of the mobile phone.

The loudspeaker device comprises a loudspeaker single body 1, wherein the loudspeaker single body 1 is used as a sound production device and is arranged on a shell 6 of the terminal equipment and used for outputting audio information. The loudspeaker unit 1 can output audio in a public address mode or in a receiver mode, so that different requirements of users are met, and the use experience of the users is improved.

In this embodiment, as shown in fig. 1-2, the speaker device further includes a sound transmission channel 2, where the sound transmission channel 2 is a sound channel in the terminal device and is used for communicating the speaker unit 1 in the terminal device with the outside of the terminal device. When the user plays the audio, the speaker unit 1 outputs the audio information, and the audio information is transmitted in the sound transmission channel 2 in the form of sound waves until the audio information is transmitted to the outside of the terminal device, so that the audio information is provided for the user.

In this embodiment, as shown in fig. 1-2, the speaker device further includes a dust-proof portion 3 disposed in the sound transmission channel 2 to prevent foreign objects outside the terminal device from entering the terminal device through the sound transmission channel 2. Dustproof portion 3 for example can set up the optional position of transaudient passageway 2, dustproof portion 3's coverage area can be more than or equal to transaudient passageway 2's radial sectional area, has effectively sheltered from transaudient passageway 2, realizes the effect of isolated foreign object, avoids the foreign object to enter into loudspeaker monomer 1 department, prolongs the life of the inside components and parts of terminal equipment.

In one example, the sound transmission channel 2 comprises a first channel 21 and a second channel 22, the first channel 21 is communicated with the second channel 22, and the dust-proof part 3 is arranged between the first channel 21 and the second channel 22, so that the sound transmission channel 2 is separated, and the invasion of foreign matters to the interior of the terminal equipment is effectively isolated.

The foreign matter may be solid foreign matter such as dust and fine particles, or may also be liquid foreign matter such as oil and water.

Here, the shape of the dust-proof portion 3 is not limited, and the shape of the dust-proof portion 3 may be, for example, a rectangle or a circle, or any other shape as long as it can function as a shield for the sound transmission channel 2.

In an exemplary embodiment, as shown in fig. 1-2, the sound transmission channel 2 is used to define the propagation direction of the sound wave, ensuring that the sound wave can propagate along the design direction to realize different functions of the terminal device. For example, the first channel 21 extends along a planar direction of the terminal device, and the first channel 21 and the second channel 22 have a predetermined included angle along a thickness direction of the terminal device (refer to a Z-axis direction shown in fig. 1 and 2). And the plane direction of the terminal equipment is parallel to the display screen of the terminal equipment.

In one example, when the preset angle is the first preset angle, the second channel 22 is directed to the side of the terminal device. The first predetermined included angle is, for example, 150 to 180.

The first channel 21 is, for example, along a length direction of the terminal device (refer to a Y-axis direction shown in fig. 1 and 2), the sound wave propagates along the first channel 21, the first channel 21 communicates with the second channel 22, and the sound wave enters the second channel 22 from the first channel 21. A first preset included angle between the second channel 22 and the first channel 21 is, for example, 180 °, so that the second channel 22 extends toward the side of the terminal device, and the sound wave is finally transmitted to the upper side or the lower side or the left side or the right side of the terminal device, thereby implementing the sound amplification function of the terminal device.

In another example, when the preset included angle is a second preset included angle, the second channel 22 extends toward the display screen of the terminal device. The second preset included angle is 90-120 degrees.

The first channel 21 is, for example, along the length direction of the terminal device (refer to the Y-axis direction shown in fig. 1 and 2), the sound wave propagates along the first channel 21, the first channel 21 communicates with the second channel 22, and the sound wave enters the second channel 22 from the first channel 21. A first preset included angle between the second channel 22 and the first channel 21 is, for example, 90 °, so that the second channel 22 extends toward the display screen of the terminal device, and the sound wave is finally transmitted to the outside of the terminal device from the display screen side of the terminal device, thereby implementing the receiver function of the terminal device.

Of course, it is understood that the first channel 21 is not limited to extend along the length direction of the terminal device, and the first channel 21 may also extend along the width direction of the terminal device (refer to the X-axis direction shown in fig. 2), or the first channel 21 may also extend along a diagonal direction of the terminal device, the diagonal direction being a direction midway between the length direction and the width direction. The first channel 21 may extend in any direction of the plane direction of the terminal device, and is designed according to actual needs, which is not described herein in detail.

In an exemplary embodiment, as shown in fig. 1-2, the dust-proof portion 3 includes a first dust-proof layer 31 and a second dust-proof layer 32. Along the extending direction of the sound transmission channel 2, the first dustproof layer 31 and the second dustproof layer 32 are arranged in sequence, and the first dustproof layer 31 is positioned on one side, far away from the horn unit 1, of the second dustproof layer 32.

In one example, the first dust-proof layer 31 includes a dust screen and the second dust-proof layer 32 includes a waterproof, breathable film.

The dustproof net is used for isolating solid foreign matters such as dust and fine particles outside the terminal equipment. The dust screen is provided with a plurality of meshes to ensure the sound wave to be normally transmitted. And the aperture of the mesh is small, so that foreign matters such as dust or fine particles are effectively blocked.

Wherein, waterproof ventilated membrane is used for isolating the outside liquid foreign matters such as oil, water of terminal equipment. The sound wave can penetrate through the waterproof breathable film, and the user can hear the sound.

In another example, the first dust-proof layer 31 includes a waterproof, breathable film, and the second dust-proof layer 32 includes a dust screen. The functions of the first dust-proof layer 31 and the second dust-proof layer 32 on the terminal device are already described in the above examples, and are not repeated herein.

Wherein, first dust layer 31 and the outer foreign object of the common separation terminal equipment of second dust layer 32, with solid-state foreign object and the outer equal interception first passageway 21 of liquid foreign object outside, protect terminal equipment, avoid the components and parts in the terminal equipment to receive the damage, reduced the harmfulness of foreign object to terminal equipment, effectively prolong terminal equipment's life.

In this embodiment, as shown in fig. 1-2, the speaker device further includes a connecting bracket 4 disposed between the first dust-proof layer 31 and the second dust-proof layer 32, and the first dust-proof layer 31 and the second dust-proof layer 32 are respectively connected to the connecting bracket 4.

The connecting bracket 4 is provided with a through channel 41, and the through channel 41 corresponds to the first channel 21 and the second channel 22 of the sound transmission channel 2. When the sound wave in the sound transmission channel 2 propagates from the first channel 21 to the second channel 22, the sound wave propagates to the connecting support 4 and can propagate into the second channel 22 through the through channel 41, so that the propagation of the sound wave is prevented from being blocked.

In one example, the connecting bracket 4 is, for example, a plate shape, has a simple structure, and has an unlimited outer peripheral shape, and does not need to be attached to the exterior of the terminal device, as long as it is disposed on the sound transmission duct 2, and can be mounted with the dust-proof portion 3.

The first dust-proof layer 31 may be, for example, hung on the first surface 42 of the connecting bracket 4, and the coverage area of the first dust-proof layer 31 may completely cover the through channel 41 to isolate the solid foreign objects from entering the horn unit 1 from the through channel 41. The coverage area of the first dust-proof layer 31 may be smaller than the radial cross-sectional area of the sound transmission channel 2, as long as the penetrating channel 41 can be shielded.

The second dust-proof layer 32 can also be hung on the second surface 43 of the connecting bracket 4, and the covering area of the second dust-proof layer 32 also completely covers the through channel 41 to isolate the liquid foreign objects and prevent the liquid foreign objects from entering the horn unit 1. Wherein, the coverage area of the second dust-proof layer 32 can be the same as that of the first dust-proof layer 31.

It should be noted that, for example, the first dustproof layer 31 may also be hung on the second surface 43 of the connecting bracket 4, and the second dustproof layer 32 may also be hung on the first surface 42 of the connecting bracket 4, which is not limited herein specifically based on the actual design.

In order to ensure the sealing performance, the first dust-proof layer 31 may be fixedly connected to the first surface 42 of the connecting bracket 4 in a bonding manner, and the second dust-proof layer 32 may be fixedly connected to the second surface 43 of the connecting bracket 4 in a bonding manner, so that the first dust-proof layer 31 and the second dust-proof layer 32 are more reliably connected to the connecting bracket 4, and when the terminal device is impacted by an external force, the dust-proof layer 3 is separated from the connecting bracket 4, thereby affecting the blocking effect.

In an exemplary embodiment, as shown in fig. 1-2, the speaker unit further includes a mounting bracket 5 mounted to the terminal device, and the mounting bracket 5 encloses a housing 6 of the terminal device to form the sound transmission channel 2.

In the present embodiment, as shown in fig. 1 to 2, the mounting bracket 5 includes a first bracket 51, and the first bracket 51 is provided to the housing 6 to cover the second channel 22 of the sound transmission channel 2. Wherein, for example be formed with the installation opening on the casing 6, first support 51 is for example the joint to the installation opening for first support 51 forms to dismantle with casing 6 and is connected, so that the maintenance is changed in the later stage.

Of course, it is understood that the first bracket 51 is not limited to the above connection manner, and the first bracket 51 may be disposed on the mounting through hole of the housing 6 by, for example, an adhesive manner, so that the connection between the housing 6 and the first bracket 51 is more reliable. Alternatively, the first bracket 51 may be mounted to the housing 6 by screws, which are not limited herein and are subject to practical design.

The first support 51 is formed with at least one sound emitting channel 511, and the at least one sound emitting channel 511 is communicated with the second channel 22 to ensure that sound waves can propagate out of the terminal device. For example, the sound emitting channels 511 may be arranged in a plurality of rows in order to improve the audio effect of the terminal device, and the sound emitting channels 511 are arranged at equal intervals along the width direction (refer to the X-axis direction shown in fig. 1) of the terminal device, so that the sound output by the terminal device is clearer, the requirements of a user are met, and the use experience of the user is improved.

The port of the sound emitting channel 511 communicating with the outside of the terminal device is a first port, the shape of the first port may be, for example, a circle, an ellipse, a rectangle, or the like, and the radial cross-sectional shape of the sound emitting channel 511 may be the same as the first port. The sound emitting passage 511 forms an equal diameter passage along the extending direction of the sound emitting passage 511.

Of course, it will be understood that the radial cross-sectional shape of sound outlet passage 511 may be different from its port shape. For example, the port of the sound outlet channel 511 communicating with the second channel 22 is a second port, the radial cross-sectional area of the second port is smaller than the radial cross-sectional area of the sound outlet channel 511, and the radial cross-sectional area of the sound outlet channel 511 is smaller than the radial cross-sectional area of the first port. Along the extending direction of the sound outlet channel 511, the sound outlet channel 511 forms a diameter-variable channel, so as to further improve the audio effect of the terminal device.

In the present embodiment, as shown in fig. 1-2, the mounting bracket 5 further includes a second bracket 52 connected to the first bracket 51, and the sound transmission channel 2, i.e., the sound channel, is formed between the second bracket 52 and the housing 6.

The second bracket 52 includes, for example, a horizontal section 521 and a vertical section 522, a first channel 21 is formed between the horizontal section 521 and the housing 6, and a second channel 22 is formed between the vertical section 522 and the housing 6. The vertical section 522 may be perpendicular to the side wall of the first support 51 so that the sound wave propagates in the designed direction. The second dust proof layer 32 is located in the second passage 22 and covers the port of the first passage 21.

In order to make the connection between the second support 52 and the housing 6 more reliable, the second support 52 is bonded to the housing 6, for example, in a dispensing manner, so as to avoid deviation of the first channel 21 and the second channel 22, which affects normal propagation of the sound wave. The sound emitting side of the horn unit 1 is disposed corresponding to the horizontal section 521 of the second bracket 52 so that the sound wave of the horn unit 1 can propagate along the first passage 21 toward the second passage 22. And the sound emitting channel 511 is disposed corresponding to the vertical section 522 so that the sound waves in the second channel 22 can propagate along the sound emitting channel 511 to the outside of the terminal device.

In an exemplary embodiment, as shown in fig. 1-2, the first bracket 51 includes a first sub-bracket (not shown) and a second sub-bracket (not shown), and the first sub-bracket and the second sub-bracket are detachably connected.

In one example, the first sub-mount is provided with a plug rod, for example, and the second sub-mount is provided with a plug hole, for example, and the first sub-mount is connected with the plug hole of the second sub-mount through the plug rod in a plugging manner so as to be convenient to detach.

In another example, the first sub-mount and the second sub-mount may also be adhesively connected, so that the connection of the first sub-mount and the second sub-mount is more reliable.

In this embodiment, the speaker device further includes a third dust layer (not shown in the figure), the third dust layer is disposed between the first sub-bracket and the second sub-bracket, and the first sub-bracket and the second sub-bracket are respectively connected to the third dust layer to separate the sound channel 511. Wherein, the third dust prevention layer forms the preliminary interception to terminal equipment for example including the dust screen, in being used for preventing the outer solid-state foreign object of terminal equipment to enter into terminal equipment, further promoted terminal equipment's separation effect.

In one example, the dust screen may be a unitary structure, for example, and the dust screen corresponds to all of the sound outlet channels 511 to separate the sound outlet channels 511. When the dust screen is damaged, the maintenance steps are simplified, and the maintenance efficiency is improved.

In another example, the dust-proof net may be a separate structure, and the dust-proof net is in one-to-one correspondence with the sound-emitting channels 511 and separates the sound-emitting channels 511 respectively. When the dust screen is damaged, the dust screen can be replaced pertinently, and the maintenance cost is saved.

Third dust layer and dust guard completely cut off the outer solid-state foreign object of dust, tiny granule or liquid foreign object such as oil, water jointly for terminal equipment in this disclosure, for terminal equipment provides dual guarantee, promoted terminal equipment prevent the foreign object effect for terminal equipment is applicable to more changeable application scene, has effectively prolonged terminal equipment's life.

The sound transmission channel is also arranged in the sound channel, and the dustproof part is arranged, so that the occupied space is small, and the production cost is saved. The dustproof part is simple in structure, is of a plane structure, is convenient to assemble, and effectively reduces the assembly cost. And liquid foreign matters and solid foreign matters can be effectively isolated, the horn unit or other devices in the terminal equipment are prevented from being damaged, the risk that the solid foreign matters or the liquid foreign matters corrode the devices in the terminal equipment is reduced, the acoustic performance of the terminal equipment is guaranteed, and the use requirements of users are met.

The disclosure also provides a terminal device, such as a mobile phone, a tablet computer, a portable wearable device, and the like. The terminal equipment comprises a shell and the horn device in any one of the embodiments, and the horn device is installed on the shell.

In an exemplary embodiment, as shown in fig. 1-2, a terminal device includes a housing 6 and a speaker device, and the speaker device is mounted on the housing 6 to implement a speaker function or an earpiece function of the terminal device. The terminal device further comprises an adhesive portion 7, and the horn device is connected with the housing 6 through the adhesive portion 7.

Wherein, bonding portion 7 is including for example bubble celloidin, and loudspeaker unit 1 of loudspeaker device promotes the connection effect between loudspeaker unit 1 and the casing 6 through bubble celloidin and casing 6 adhesive connection.

The bonding portion 7 further includes, for example, a double-sided tape, and the connecting bracket 4 and the mounting bracket 5 of the speaker unit are both bonded to the housing 6 by the double-sided tape. Here, it is not specifically stated.

The utility model provides a terminal equipment, the dust-proof part simple structure of built-in loudspeaker device can effectively block that the outer solid-state foreign object of terminal equipment and liquid foreign object enter into terminal equipment in, guarantees terminal equipment's acoustic performance, prolongs terminal equipment's life, satisfies the needs of diversified use scene.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (12)

1. The utility model provides a loudspeaker device, installs in terminal equipment, its characterized in that, loudspeaker device includes:

a horn unit;

the sound transmission channel is used for communicating the loudspeaker unit in the terminal equipment with the outside of the terminal equipment;

a dust-proof portion provided in the sound transmission channel;

the sound transmission channel comprises a first channel and a second channel, the first channel is communicated with the second channel, and the dust-proof part is arranged between the first channel and the second channel.

2. The horn apparatus of claim 1, wherein the first channel extends along a planar direction of the terminal device, and a preset included angle is formed between the first channel and the second channel along a thickness direction of the terminal device; and the plane direction of the terminal equipment is parallel to the display screen of the terminal equipment.

3. The horn device of claim 2,

when the preset included angle is a first preset included angle, the second channel extends towards the side part of the terminal equipment;

and when the preset included angle is a second preset included angle, the second channel extends towards the display screen of the terminal equipment.

4. The horn device according to claim 1, wherein the dust-proof portion comprises a first dust-proof layer and a second dust-proof layer, the first dust-proof layer and the second dust-proof layer being arranged in this order along the extending direction of the sound transmission passage;

the first dustproof layer is positioned on one side, far away from the horn unit, of the second dustproof layer.

5. The horn device of claim 4, wherein the first dust-proof layer comprises a dust screen and the second dust-proof layer comprises a waterproof and breathable membrane; or,

the first dustproof layer comprises a waterproof breathable film, and the second dustproof layer comprises a dustproof net.

6. The horn device according to claim 4, further comprising a connecting bracket disposed between the first and second dust-proof layers, and the first and second dust-proof layers are connected to the connecting bracket, respectively.

7. The horn apparatus of claim 1, further comprising a mounting bracket mounted within the terminal device, the mounting bracket enclosing the housing of the terminal device to form the sound transmission channel.

8. The horn device of claim 7, wherein the mounting bracket comprises a first bracket disposed at the housing to cover the second passage;

wherein, the first support is formed with at least one sound channel, at least one sound channel all with the second passageway intercommunication.

9. The horn apparatus of claim 8, wherein the mounting bracket further comprises a second bracket connected to the first bracket, the second bracket and the housing forming the sound transmission channel therebetween.

10. The speaker device according to claim 8, wherein the first bracket comprises a first sub-bracket and a second sub-bracket, and the first sub-bracket and the second sub-bracket are detachably connected.

11. The horn device of claim 10, further comprising a third dust prevention layer disposed between the first and second sub-mounts, wherein the first and second sub-mounts are respectively connected to the third dust prevention layer to separate the sound outlet passages.

12. A terminal device, characterized in that the terminal device comprises a housing, and a horn device according to any one of claims 1-11, which is mounted to the housing.

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