Sound guide for sound-emitting element, sound-emitting element, and sound-emitting device

Abstract

The application discloses a sound guiding device of a sound emitting unit, the sound emitting unit and a sound emitting device. The sound guiding device comprises a vibration unit, a shell and a sound guiding structure. The vibration unit comprises a diaphragm. The diaphragm vibrates to form an axial sound wave propagating along an axial direction and a radial sound wave propagating along a radial direction. A top cover of the shell is provided with a cover plate. A receiving space is formed between the cover plate and the shell. The vibration unit is located in the shell. The diaphragm extends upwards out of the cover plate and forms a protruding structure. The sound guiding structure is arranged on an upper surface of the cover plate. The sound guiding structure is arranged outside the protruding structure along a circumferential direction of the protruding structure. The sound guiding structure extends from inside to outside along the radial direction of the protruding structure. The sound guiding structure forms a sound transmission channel for the axial sound wave to pass through. The sound guiding structure can absorb and / or scatter and / or conduct at least part of the radial sound wave to the cover plate. The application attenuates the radial sound wave, reduces the transmission of the radial sound wave, eliminates muddy sound, does not affect the directivity of the sound emitting unit and optimizes the acoustic performance of the sound emitting unit and the sound emitting device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electroacoustic, in particular to a sound guiding device of a sound emitting monomer, the sound emitting monomer and the sound emitting device. BACKGROUND

[0002] The sound emitting device, such as a loudspeaker, is an important acoustic component in electronic equipment, which is a transducer for converting electrical signals into acoustic signals. With the continuous progress and innovation of technology, the structure design of the traditional loudspeaker is constantly innovated and changed, which not only needs to meet the development trend of thinness, but also needs to pay more and more attention to the optimization of performance, and also needs to consider the simplification of process and the control of cost.

[0003] At present, the diaphragm of the loudspeaker is usually non-planar, so that the loudspeaker not only generates axial sound waves propagating along its axial direction, but also generates radial sound waves propagating along its radial direction. The axial sound waves are the required sound waves, but the radial sound waves make the sound sound muddy and also affect the directivity of the loudspeaker, so that the entire sound field is affected, resulting in poor acoustic performance of the loudspeaker. SUMMARY

[0004] The main purpose of the present application is to provide a sound guiding device of a sound emitting monomer, a sound emitting monomer and a sound emitting device, which aims to solve the problem that the radial sound waves generated by the diaphragm of the sound emitting device such as the loudspeaker cause poor acoustic performance of the loudspeaker.

[0005] To achieve the above-mentioned purpose, the present application provides a sound guiding device of a sound emitting monomer, which comprises:

[0006] a vibration unit, the vibration unit comprising a diaphragm, the diaphragm vibrating to form axial sound waves propagating along its axial direction and radial sound waves propagating along its radial direction;

[0007] a housing, the top cover of the housing being provided with a cover plate, a receiving space being formed between the cover plate and the housing, the vibration unit being located in the housing, and the diaphragm extending upwardly out of the cover plate and forming a protruding structure;

[0008] a sound guiding structure, the sound guiding structure being arranged on the upper surface of the cover plate, the sound guiding structure being arranged outside the protruding structure along the circumferential direction of the protruding structure, and the sound guiding structure extending radially from the inside to the outside of the protruding structure, the sound guiding structure forming a sound transmission channel for the axial sound waves to pass through, and the sound guiding structure being capable of absorbing and / or dispersing and / or conducting at least part of the radial sound waves to the cover plate.

[0009] Optionally, the sound guide structure has a plurality of sound guide surfaces, the plurality of sound guide surfaces are arranged along the circumference of the convex structure, and each sound guide surface extends along the radial direction of the convex structure, and the sound guide surface can absorb and / or disperse and / or conduct at least part of the radial sound waves to the upper surface of the cover plate.

[0010] Optionally, the sound guide surface is an inclined plane extending along the circumference of the convex structure from bottom to top, and an acute angle is formed between the inclined plane and the cover plate.

[0011] Optionally, the sound guide surface is an arc-shaped curved surface extending along the circumference of the convex structure from bottom to top, and the concave side of the arc-shaped curved surface faces the cover plate.

[0012] Optionally, the sound guide structure includes a plurality of sound guide strips arranged along the circumference of the convex structure, the plurality of sound guide strips enclose the sound transmission channel, and both sides of each sound guide strip are formed with two sound guide surfaces.

[0013] Optionally, the outer end of the sound guide strip is connected to the edge of the cover plate, the inner end of the sound guide strip extends above the convex structure, and the inner ends of the plurality of sound guide strips enclose the sound transmission channel.

[0014] Optionally, the inner end of the sound guide strip is connected to the bottom thereof by an arc-shaped inner edge, the arc-shaped inner edge matches or substantially matches the shape of the outer contour of the convex structure, and the arc-shaped inner edge has a gap with the outer contour of the convex structure.

[0015] Optionally, the two sound guide surfaces share the arc-shaped inner edge; the top of the sound guide strip is formed with an arc-shaped top surface, the two side edges of the arc-shaped top surface are two arc-shaped top edges, the bottom of the sound guide strip is formed with two bottom edges, and each arc-shaped top edge extends smoothly to the bottom edge on the same side and the arc-shaped inner edge to form the sound guide surface.

[0016] Optionally, the two bottom edges are arranged in a crossed manner near the position of the convex structure, and the intersection forms a bottom end point of the arc-shaped inner edge; the two bottom edges extend from inside to outside, and the distance between the two bottom edges gradually expands from inside to outside.

[0017] Optionally, the two bottom edges are straight edges;

[0018] Alternatively,

[0019] Both the two bottom edges are arc edges, and the profile line of the arc edge is a parabola.

[0020] Optionally, the distance between the bottom end point of the arc-shaped inner edge and the convex structure along the radial direction of the convex structure is 2mm-30mm.

[0021] Optionally, the inner end of the sound guide strip forms a vertical end surface arranged along the axial direction of the convex structure; and the outer end edge of the sound guide strip coincides with the outer edge of the cover plate.

[0022] Optionally, the distance between the inner end of the sound guide strip and the cover plate along the axial direction of the convex structure is 2mm-40mm.

[0023] Optionally, the upper surface of the cover plate is provided with a sound absorption structure.

[0024] Optionally, the sound absorption structure is a sound absorption cloth laid on the upper surface of the cover plate.

[0025] Alternatively,

[0026] The sound absorption structure is a plurality of sound absorption holes formed on the upper surface of the cover plate.

[0027] Optionally, the area of the sound guide structure for conducting the radial sound waves forms a plurality of sound absorption holes.

[0028] Optionally, the projection area of the sound guide structure on the upper surface of the cover plate accounts for 25%-70% of the total area of the upper surface of the cover plate.

[0029] Optionally, the sound guide structure is integrally formed on the cover plate.

[0030] The application further provides a sound emitting monomer, which uses the sound guide device of the sound emitting monomer as described above.

[0031] The application further provides a sound emitting device, which comprises a shell and the sound emitting monomer as described above, and the sound emitting monomer is accommodated in the shell.

[0032] In use, the diaphragm vibration of the sound guide device of the sound emitting monomer produces axial sound waves and radial sound waves, wherein the axial sound waves are sound waves propagating along the axial direction of the diaphragm, and the radial sound waves are sound waves propagating along the radial direction of the diaphragm. During the propagation of the sound waves, the axial sound waves are transmitted out through the sound transmission channel, realizing the sound emitting function of the sound emitting monomer, and at least part of the radial sound waves can be conducted through the sound guide structure. Since the sound guide structure extends along the radial direction of the convex structure from the inside to the outside, it is consistent with the propagation direction of the radial sound waves, which is conducive to the conduction of the radial sound waves, and the sound guide structure can absorb and / or scatter and / or conduct at least part of the radial sound waves to the cover plate, so that the radial sound waves are attenuated, the transmission of the radial sound waves is reduced, the muddy sound is reduced, the directivity of the sound emitting monomer is not affected, the entire sound field is not affected, and the acoustic performance of the sound emitting monomer and the sound emitting device is optimized. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only show some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in these drawings without any creative effort.

[0034] Figure 1 A perspective view of a sound guide device of a sound emitting unit according to an embodiment of the present application;

[0035] Figure 2 A top view of a sound guide device of a sound emitting unit according to an embodiment of the present application.

[0036] Explanation of reference signs:

[0037] 10, diaphragm; 11, convex structure; 20, shell; 30, cover plate; 40, sound guide structure; 41, sound guide surface; 42, sound guide strip; 421, arc-shaped inner edge; 422, gap; 423, arc-shaped top surface; 424, arc-shaped top edge; 425, bottom edge; 426, vertical end surface; 43, sound transmission channel.

[0038] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.

[0040] It should be noted that if the embodiments of the present application involve directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directionality indication also changes accordingly.

[0041] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0042] The present application provides a sound guide device of a sound emitting unit.

[0043] As shown in Figure 1 and Figure 2 The sound guide device of the sound emitting unit comprises a vibration unit, a shell 20 and a sound guide structure 40, wherein the vibration unit comprises a diaphragm 10, the diaphragm 10 vibrates to form an axial sound wave propagating along the axial direction thereof and a radial sound wave propagating along the radial direction thereof; the top cover of the shell 20 is provided with a cover plate 30, a receiving space is formed between the cover plate 30 and the shell 20, the vibration unit is located in the shell 20, and the diaphragm 10 extends out of the cover plate 30 and forms a protruding structure 11; the sound guide structure 40 is arranged on the upper surface of the cover plate 30, and the sound guide structure 40 is arranged outside the protruding structure 11 along the circumferential direction of the protruding structure 11, and the sound guide structure 40 extends from the inside to the outside along the radial direction of the protruding structure 11, the sound guide structure 40 forms a sound transmission channel 43 for the axial sound wave to pass through, and the sound guide structure 40 can absorb and / or scatter and / or conduct at least part of the radial sound wave to the cover plate 30.

[0044] The sound emitting unit of the present application can be applied in a sound emitting device, which can be a computer, a mobile phone, a sound box, a vehicle-mounted sound box applied in a car, etc., and the sound emitting unit can be a loudspeaker unit. The present embodiment takes the loudspeaker unit as an example for description.

[0045] In the use process of the sound guide device of the sound emitting unit of the present application, the diaphragm 10 vibrates to generate an axial sound wave and a radial sound wave, wherein the axial sound wave is a sound wave propagating along the axial direction of the diaphragm 10, and the radial sound wave is a sound wave propagating along the radial direction of the diaphragm 10. In the process of sound wave propagation, the axial sound wave is transmitted out through the sound transmission channel 43, realizing the sound emitting function of the sound emitting unit, and at least part of the radial sound wave can be conducted through the sound guide structure 40. Since the sound guide structure 40 extends from the inside to the outside along the radial direction of the protruding structure 11, it is consistent with the propagation direction of the radial sound wave, which is beneficial to the conduction of the radial sound wave, and the sound guide structure 40 can absorb and / or scatter and / or conduct at least part of the radial sound wave to the cover plate 30.

[0046] It should be noted that in an embodiment, the sound guide structure 40 can absorb at least part of the radial sound waves, i.e. at least part of the radial sound waves are absorbed during the propagation, the radial sound waves are attenuated; in another embodiment, the sound guide structure 40 can disperse at least part of the radial sound waves, i.e. at least part of the radial sound waves are dispersed during the propagation, the radial sound waves are attenuated; in yet another embodiment, the sound guide structure 40 can conduct at least part of the radial sound waves to the cover plate 30, changes the radial transmission path of the radial sound waves, and the radial sound waves are attenuated. In other embodiments, the sound guide structure 40 can absorb and disperse at least part of the radial sound waves, or absorb and conduct to the cover plate 30, or absorb and conduct to the cover plate 30, or absorb, disperse and conduct to the cover plate 30, so that the radial sound waves are attenuated and the attenuation degree is improved. Thus, the sound guide structure 40 in the sound guide device of the sound emitting monomer of the present application can absorb and / or disperse and / or conduct at least part of the radial sound waves to the cover plate 30, the radial sound waves are attenuated, the radial sound waves are reduced, the turbid sound is reduced, and the directivity of the sound emitting monomer is not affected, the entire sound field is protected, and the acoustic performance of the sound emitting monomer and the sound emitting device is optimized.

[0047] In an embodiment, the sound guide structure 40 has a plurality of sound guide surfaces 41, the plurality of sound guide surfaces 41 are arranged along the circumference of the protruding structure 11, and each sound guide surface 41 extends along the radial direction of the protruding structure 11. The sound guide surface 41 can absorb and / or disperse and / or conduct at least part of the radial sound waves to the upper surface of the cover plate 30.

[0048] The sound guide structure 40 is provided with the sound guide surface 41 which extends along the radial direction of the protruding structure 11 and can absorb and / or disperse and / or conduct at least part of the radial sound waves to the upper surface of the cover plate 30, thereby achieving the attenuation effect on the radial sound waves and reducing the transmission of the radial sound waves. Moreover, the number of sound guide surfaces 41 is multiple, and the plurality of sound guide surfaces 41 can simultaneously conduct the radial sound waves, thereby improving the attenuation efficiency and speed of the radial sound waves and further optimizing the acoustic performance of the sound emitting monomer and the sound emitting device.

[0049] In an embodiment, the sound guide surface 41 is an inclined plane, the inclined plane extends along the circumference of the protruding structure 11 from bottom to top, and an acute angle is formed between the inclined plane and the cover plate 30. As shown in Figure 1 and Figure 2 Specifically, the bottom of the sound guide surface 41 can be connected with the cover plate 30, and the top of the sound guide surface 41 extends and expands along the circumference of the protruding structure 11 relative to the bottom. Thus, during the outward conduction of the radial sound waves, at least part of the radial sound waves passing through the sound guide surface 41 are reflected downward and guided to the upper surface of the cover plate 30 due to the inclined downward inclined plane of the sound guide surface 41, thereby achieving the attenuation effect on the radial sound waves. The structure design is reasonable, simple and easy to manufacture.

[0050] In another embodiment, the sound guiding surface 41 is an arc-shaped surface extending along the circumference of the convex structure 11 from bottom to top, and the concave side of the arc-shaped surface faces the cover plate 30. Specifically, the bottom of the sound guiding surface 41 can be connected with the cover plate 30, and the top of the sound guiding surface 41, compared with the bottom, extends along the circumference of the convex structure 11, so that at least part of the radial sound waves are reflected and guided downward to the upper surface of the cover plate 30 in the process of being conducted outward, due to the arc-shaped surface with the concave side facing the cover plate 30, i.e. the concave side facing downward, thereby achieving the attenuation effect on the radial sound waves. In addition, the design of the arc-shaped surface can improve the smoothness of the radial sound wave conduction and optimize the attenuation effect on the radial sound waves, and the structure design is reasonable and simple.

[0051] The sound guiding structure 40 includes a plurality of sound guiding strips 42 arranged at intervals along the circumference of the convex structure 11, and the plurality of sound guiding strips 42 enclose a sound transmission channel 43, and two side surfaces of each sound guiding strip 42 form two sound guiding surfaces 41.

[0052] As shown in Figure 1 and Figure 2 , each sound guiding strip 42 extends radially from inside to outside along the convex structure 11, and two sound guiding surfaces 41 are formed on the two side surfaces of each sound guiding strip 42 along the circumference of the convex structure 11, which can simultaneously conduct the radial sound waves and improve the attenuation efficiency and speed of the radial sound waves. Further, the number of sound guiding strips 42 is multiple, and the plurality of sound guiding strips 42 are arranged at intervals along the circumference of the convex structure 11, thereby conducting the radial sound waves from multiple directions, further improving the attenuation efficiency and speed of the radial sound waves, and optimizing the acoustic performance of the sound emitting monomer and the sound emitting device. The plurality of sound guiding strips 42 enclose the sound transmission channel 43, which does not interfere with the axial sound waves, ensuring the normal transmission of the axial sound waves. In a preferred embodiment, the number of sound guiding strips 42 is 3-6.

[0053] In an embodiment, the outer end of the sound guiding strip 42 is connected with the edge of the cover plate 30, and the inner end of the sound guiding strip 42 extends above the convex structure 11, which is beneficial to the conduction of the radial sound waves generated by the convex structure 11. In addition, the inner ends of the plurality of sound guiding strips 42 enclose the sound transmission channel 43, which does not interfere with the axial sound waves, ensuring the normal transmission of the axial sound waves. In addition, the sound guiding strip 42 can also protect the diaphragm 10.

[0054] In an embodiment, the inner end of the sound guiding strip 42 is connected with the bottom thereof through an arc-shaped inner edge 421, the arc-shaped inner edge 421 matches or substantially matches the shape of the outer contour of the convex structure 11, and the arc-shaped inner edge 421 and the outer contour of the convex structure 11 have a gap 422 therebetween.

[0055] As shown in Figure 1 and Figure 2As shown, the arc-shaped inner edge 421 is denoted by A, the arc-shaped inner edge 421 matches or substantially matches the shape of the outer contour of the convex structure 11, and there is a gap 422 between the arc-shaped inner edge 421 and the outer contour of the convex structure 11, thereby providing space for the vibration of the convex structure 11 without affecting the normal vibration of the diaphragm 10, and the structure design is reasonable.

[0056] In an embodiment, the two sound guide surfaces 41 share the arc-shaped inner edge 421, improving the structural simplicity. The top of the sound guide strip 42 is formed with an arc-shaped top surface 423, and the two sides of the arc-shaped top surface 423 are two arc-shaped top edges 424, respectively. The bottom of the sound guide strip 42 is formed with two bottom edges 425, and each arc-shaped top edge 424 smoothly extends to the bottom edge 425 on the same side and the arc-shaped inner edge 421 to form the sound guide surface 41.

[0057] The design of the arc-shaped top surface 423 optimizes the design fluency of the sound guide strip 42, facilitating the generation of the sound guide surface 41. The arc-shaped top surface 423 has two arc-shaped top edges 424 on both sides of the circumferential direction of the convex structure 11, and the two arc-shaped top edges 424 are denoted by B1 and B2, respectively. The bottom of the sound guide strip 42 is connected with the cover plate 30 and forms two bottom edges 425, which are denoted by C1 and C2, respectively. Among them, the arc-shaped top edge 424 (B1) is arranged on the same side with the bottom edge 425 (C1), and the arc-shaped top edge 424 (B2) is arranged on the same side with the bottom edge 425 (C2). The arc-shaped top edge 424 (B1) smoothly extends to the bottom edge 425 (C1) and the arc-shaped inner edge 421 (A) to form one of the sound guide surfaces 41, and the arc-shaped top edge 424 (B2) smoothly extends to the bottom edge 425 (C2) and the arc-shaped inner edge 421 (A) to form the other sound guide surface 41, improving the smoothness of the radial sound wave conduction, optimizing the attenuation effect of the radial sound wave, and the structure design is reasonable.

[0058] In an embodiment, the two bottom edges 425 are arranged in a cross shape near the position of the convex structure 11, and the cross position forms the bottom end point of the arc-shaped inner edge 421; the two bottom edges 425 extend from inside to outside, and the spacing between the two bottom edges 425 is gradually expanded from inside to outside.

[0059] As shown in Figure 1 and Figure 2 , the cross position of the two bottom edges 425 is denoted by O, that is, the bottom end point of the arc-shaped inner edge 421 is denoted by O. The two bottom edges 425 extend from inside to outside, and in the process of extending outward, the two bottom edges 425 also tilt to the circumferential direction of the convex structure 11, so that the spacing between the two bottom edges 425 is gradually expanded from inside to outside. In this way, the radial sound wave conducted through the sound guide surface 41 can be reflected in a direction perpendicular to the bottom edge 425, so that the radial sound wave is horizontally scattered, which is beneficial to attenuate the radial sound wave.

[0060] As shown in Figure 1and Figure 2 As shown in the drawings, in an embodiment, the two bottom edges 425 are straight edges, simple structure and easy to manufacture. In another embodiment, the two bottom edges 425 are arc edges, and the profile line of the arc edge is a parabola, which is conducive to the smoothness of the radial sound wave guide.

[0061] In an embodiment, the distance between the bottom end point of the arc-shaped inner edge 421 and the convex structure 11 along the radial direction of the convex structure 11 is 2mm-30mm, so that a safe distance is maintained between the arc-shaped inner edge 421 and the convex structure 11, avoiding interference with the convex structure 11.

[0062] In an embodiment, the inner end of the sound guide strip 42 forms a vertical end surface 426 arranged along the axial direction of the convex structure 11, avoiding the formation of a sharp end structure, and avoiding scratching the human hand or other assembly parts during assembly. The outer edge of the sound guide strip 42 coincides with the outer edge of the cover plate 30, so that the outer shape of the sound guide strip 42 is smooth and smooth, and the aesthetic appearance is improved.

[0063] In an embodiment, the distance between the inner end of the sound guide strip 42 and the cover plate 30 along the axial direction of the convex structure 11 is 2mm-40mm, i.e., the distance between the inner end bottom of the sound guide strip 42 and the cover plate 30 along the circumferential direction of the convex structure 11 is 2mm-40mm, so that a safe distance is maintained between the inner end bottom of the sound guide strip 42 and the convex structure 11, avoiding interference with the convex structure 11.

[0064] In an embodiment, the upper surface of the cover plate 30 is provided with a sound absorption structure, which can absorb and attenuate the radial sound wave conducted by the sound guide structure 40 to the upper surface of the cover plate 30, greatly reducing the transmission of the radial sound wave, and further optimizing the acoustic performance of the sound emitting monomer and the sound emitting device.

[0065] Specifically, in an embodiment, the sound absorption structure is a sound absorption cloth laid on the upper surface of the cover plate 30, which can use the existing technology of the sound absorption cloth to absorb the energy of the radial sound wave and avoid the radial sound wave being reflected again on the upper surface of the cover plate 30.

[0066] In another embodiment, the sound absorption structure is a plurality of sound absorption holes formed on the upper surface of the cover plate 30, i.e., the upper surface of the cover plate 30 is a porous surface, and the plurality of sound absorption holes can be distributed in a honeycomb shape or other effective sound absorption shape, realizing the energy absorption of the radial sound wave and playing an effective attenuation role on the radial sound wave.

[0067] In an embodiment, the area on the sound guide structure 40 for conducting radial sound waves forms a plurality of sound absorption holes. Specifically, the area on the sound guide structure 40 for conducting radial sound waves is the sound guide surface 41, and a plurality of sound absorption holes can be formed on each sound guide surface 41 of the sound guide structure 40, i.e., the sound guide surface 41 is a porous surface, and the plurality of sound absorption holes can be distributed in a honeycomb shape or other effective sound absorption shape, achieving energy absorption of radial sound waves and effectively attenuating radial sound waves.

[0068] In an embodiment, the projected area of the sound guide structure 40 on the upper surface of the cover plate 30 accounts for 25% to 70% of the total area of the upper surface of the cover plate 30, and the size is reasonably designed, i.e., it does not affect the normal sound emission of the sound emitting unit, and can effectively attenuate radial sound waves.

[0069] In an embodiment, the sound guide structure 40 is integrally formed on the cover plate 30, which omits the assembly step and assembly error and is easy to manufacture.

[0070] The application also provides a sound emitting unit, which uses the sound guide device as described above. The specific structure of the sound guide device in the sound emitting unit is referred to the above embodiments. Since the sound emitting unit uses all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0071] The application also provides a sound emitting device, which includes a housing and the sound emitting unit as described above, and the sound emitting unit is accommodated in the housing. The sound emitting device can be a computer, a mobile phone, a sound box, a vehicle sound box applied to a car, etc. The specific structure of the sound emitting device is referred to the above embodiments. Since the sound emitting device uses all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0072] The above is only the preferred embodiment of the application, and does not limit the patent scope of the application. Any equivalent structural transformation based on the inventive concept of the application, the content of the specification and the drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the application.

Claims

1. A sound conducting device for a sound producing element, characterized in that, The sound guiding device of the sound-emitting unit includes: A vibration unit, the vibration unit including a diaphragm, the diaphragm vibrating to generate axial sound waves propagating along its axial direction and radial sound waves propagating along its radial direction; The housing has a cover plate on its top, forming a receiving space between the cover plate and the housing. The vibration unit is located inside the housing, and the diaphragm extends upward from the cover plate to form a protruding structure. A sound guiding structure is disposed on the upper surface of the cover plate, and the sound guiding structure is arranged around the outside of the protruding structure in the circumferential direction, and the sound guiding structure extends radially from the inside to the outside along the protruding structure. The sound guiding structure forms a sound transmission channel for the axial sound wave to pass through, and the sound guiding structure can absorb and / or disperse and / or conduct at least part of the radial sound wave to the cover plate. The sound guiding structure has multiple sound guiding surfaces, which are arranged circumferentially along the protrusion structure and extend radially along the protrusion structure. The sound guiding surfaces can absorb and / or disperse and / or conduct at least part of the radial sound waves to the upper surface of the cover plate.

2. The sound conducting device of a sound producing element according to claim 1, wherein The sound guiding surface is an inclined plane, which extends from bottom to top along the circumference of the protruding structure, and forms an acute angle between the inclined plane and the cover plate.

3. The sound conducting device of a sound producing element according to claim 1, wherein The sound guiding surface is an arc-shaped curved surface that extends from bottom to top along the circumference of the protruding structure, and the concave side of the arc-shaped curved surface faces the cover plate.

4. The sound conducting device of a sound producing element according to claim 1, wherein The sound guiding structure includes multiple sound guiding strips arranged circumferentially along the protruding structure, the multiple sound guiding strips forming the sound transmission channel, and each sound guiding strip has two sound guiding surfaces on its two sides.

5. The sound conducting device of a sound producing element according to claim 4, wherein The outer end of the sound guide strip is connected to the edge of the cover plate, the inner end of the sound guide strip extends to the top of the protruding structure, and the inner ends of the plurality of sound guide strips form the sound transmission channel.

6. The sound conducting device of a sound producing element according to claim 5, wherein The inner end of the sound guide strip is connected to its bottom by an arc-shaped inner edge. The arc-shaped inner edge matches or substantially matches the shape of the outer contour of the protruding structure, and there is a gap between the arc-shaped inner edge and the outer contour of the protruding structure.

7. The sound conducting device of a sound producing element according to claim 6, wherein The two sound guiding surfaces share the arc-shaped inner edge; the top of the sound guiding strip has an arc-shaped top surface, and the two sides of the arc-shaped top surface are two arc-shaped top edges, and the bottom of the sound guiding strip has two bottom edges. Each arc-shaped top edge extends smoothly to the bottom edge and the arc-shaped inner edge on the same side to form the sound guiding surface.

8. The sound conducting device of a sound producing element according to claim 7, wherein The two bottom edges are arranged intersectingly near the protruding structure, and the intersection forms the bottom end point of the inner arc of the arc; the two bottom edges extend from the inside to the outside, and the distance between the two bottom edges gradually increases from the inside to the outside.

9. The sound guiding device for the sound-emitting unit as described in claim 8, characterized in that, Both of the aforementioned bottom edges are straight edges; or, Both of the bottom edges are curved, and the outline of the curved edges is parabolic.

10. The sound conducting device of a sound producing element according to claim 6, wherein The distance between the bottom end of the inner edge of the arc and the protruding structure along the radial direction of the protruding structure is 2mm to 30mm.

11. The sound conducting device of a sound producing unit according to claim 5, wherein The inner end of the sound guide strip forms a vertical end surface arranged along the axial direction of the convex structure; and the outer end edge of the sound guide strip coincides with the outer edge of the cover plate.

12. The sound conducting device of a sound producing unit according to claim 5, wherein The distance between the inner end of the sound guide strip and the cover plate along the axial direction of the convex structure is 2mm-40mm.

13. The sound guide of a sound producing unit according to any one of claims 1 to 12, wherein The upper surface of the cover plate is provided with a sound absorption structure.

14. The sound guide device of the sound emitting unit according to claim 13, wherein, The sound absorption structure is a sound absorption cloth laid on the upper surface of the cover plate. Alternatively, The sound absorption structure is a plurality of sound absorption holes formed on the upper surface of the cover plate.

15. The sound guide of a sound producing unit according to any one of claims 1 to 12, wherein The area of the sound guide structure for conducting the radial sound waves forms a plurality of sound absorption holes.

16. The sound guide of a sound producing unit according to any one of claims 1 to 12, wherein The projection area of the sound guide structure projected on the upper surface of the cover plate accounts for 25%-70% of the total area of the upper surface of the cover plate.

17. The sound conducting device of a sound producing monomer according to any one of claims 1 to 12, wherein The sound guide structure is integrally formed on the cover plate.

18. A sound producing monomer, characterized in that, The sound emitting unit is applied with the sound guide device of the sound emitting unit according to any one of claims 1-17.

19. A sound producing device, characterized by The sound emitting device comprises a shell and the sound emitting unit according to claim 18, and the sound emitting unit is accommodated in the shell.

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