Sound production structure and display device

Abstract

The utility model discloses a sound production structure and a display device, and relates to the technical field of loudspeakers, the sound production structure comprises a backboard, a rear shell, a sound production part and an excitation body; the rear shell is arranged on the back side of the back plate, and a containing cavity is formed between the back plate and the rear shell. According to the technical scheme provided by the utility model, the accommodating cavity is formed between the back shell and the back plate, and the sound production part is suspended in the accommodating cavity, so that the purpose of enabling the sound production part to be independent is achieved, the sound production state is not influenced by the arrangement of the back plate and the back shell, and the sound production efficiency is improved. The compliance (the elastic characteristic of a loudspeaker vibration system) and the vibration degree of freedom are obviously improved, so that the whole sound production structure is more compact, enough space is provided for the vibration of the sound production part, and the sound output efficiency and the sound production effect are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to loudspeaker technical field, especially relate to a sound production structure and display device. BACKGROUND

[0002] The piezoelectric loudspeaker is different from the electric loudspeaker in sound production principle, and the piezoelectric loudspeaker produces sound through the expansion and contraction effect of its material under alternating voltage, and the thickness of driving components such as voice coil is saved.

[0003] At present, the piezoelectric vibrator is commonly used to drive the television screen or the sound production of the television frame, and the sound production state is easily affected by the rib arrangement and thickness of the module structure, or the thickness and width of the frame, resulting in poor sound production effect. UTILITY MODEL CONTENTS

[0004] The utility model discloses a sound production structure and display device, which can.

[0005] To achieve the above object, the utility model provides a sound production structure, comprising:

[0006] A back plate is arranged on the back side of the back plate, and a containing cavity is formed between the back plate and the back shell.

[0007] A rear shell is arranged on the back side of the back plate, and a containing cavity is formed between the back plate and the back shell.

[0008] A sound production part is at least partially suspended in the containing cavity to divide the containing cavity into two sub-cavities, one of which is closed, and the other has a sound production hole.

[0009] An excitation body is arranged in the containing cavity to excite the sound production part to vibrate and produce sound.

[0010] In an embodiment, the sound production structure further comprises two annular sound insulation parts arranged in the front-rear direction, the sound production part is clamped between the two annular sound insulation parts, and the side wall of the sub-cavity comprises the corresponding annular sound insulation part.

[0011] In an embodiment, the two annular sound insulation parts are adhered to the sound production part.

[0012] In an embodiment, the two annular sound insulation parts comprise a first annular sound insulation part and a second annular sound insulation part on the back side of the first annular sound insulation part, wherein:

[0013] The end of the first annular sound insulation part away from the second annular sound insulation part is adhered to the back plate; and / or,

[0014] The end of the second annular sound insulation part away from the first annular sound insulation part is sealed and abuts on the back shell.

[0015] In an embodiment, the material of the first ring-shaped sound insulation portion comprises sponge; and / or,

[0016] The material of the second ring-shaped sound insulation portion comprises ethylene-vinyl acetate copolymer.

[0017] In an embodiment, the sound generating portion comprises a sound generating diaphragm, the sound generating diaphragm comprises a first side corresponding to the sound generating hole, a second side opposite to the first side, and two third sides opposite to each other and connected between the first side and the second side, wherein:

[0018] The first side is a straight side; and / or,

[0019] The second side is an arc-shaped side; and / or,

[0020] At least one of the two third sides is a straight side.

[0021] In an embodiment, the two sub-chambers comprise a first sub-chamber and a second sub-chamber, the sound generating hole is arranged in the first sub-chamber, the chamber wall of the first sub-chamber comprises the back plate, the chamber wall of the second sub-chamber comprises the rear shell, and the excitation body is arranged in the second sub-chamber.

[0022] The sound generating portion comprises a sound generating diaphragm, the edge of the sound generating diaphragm is provided with a flange extending away from the rear shell, and the flange is arranged outside the outer side wall of the accommodating chamber.

[0023] In an embodiment, the sound generating diaphragm comprises a first side corresponding to the sound generating hole, a second side opposite to the first side, and two third sides opposite to each other and connected between the first side and the second side, wherein:

[0024] The flange is arranged at the second side; and / or,

[0025] The flange is arranged at at least one of the two third sides.

[0026] In an embodiment, the sound generating portion comprises a sound generating diaphragm, wherein:

[0027] The material of the sound generating diaphragm comprises one of metal, polycarbonate and polyethylene terephthalate; and / or,

[0028] The sound generating diaphragm is integrally formed.

[0029] In an embodiment, the excitation body is adhered to the sound generating portion; and / or,

[0030] The excitation body comprises a piezoelectric vibrator; and / or,

[0031] Two said sub-chambers include a first sub-chamber and a second sub-chamber, the sound hole is arranged in the first sub-chamber, and the excitation body is arranged in the second sub-chamber.

[0032] In an embodiment, the back side end of the back plate is provided with a first protruding part, the sound generating part includes a sound generating diaphragm, the back side end of the sound generating diaphragm is provided with a second protruding part, and the first protruding part and the second protruding part are connected through a threaded connection structure.

[0033] In an embodiment, a sound transmission hole is arranged on the rear shell, and the sound transmission hole is arranged corresponding to the sound hole.

[0034] The utility model discloses still propose a kind of display device, including the sound generating structure of the described;Wherein, the sound generating structure includes:

[0035] Back plate;

[0036] Rear shell, is arranged at the back side of the back plate, and the accommodating cavity is formed between the back plate and the rear shell;

[0037] Sound generating part, at least partially suspended in the accommodating cavity, to divide the accommodating cavity into two sub-chambers, one of the sub-chambers is arranged in a sealed manner, and the other sub-chamber is provided with a sound hole;And,

[0038] Excitation body, arranged in the accommodating cavity, to excite the sound generating part to vibrate and generate sound.

[0039] In an embodiment, the accommodating cavity, the sound generating part and the excitation body are one-to-one corresponding to be arranged as sound generating structure group, and the sound generating structure group is provided with multiple.

[0040] In an embodiment, the display device includes a television.

[0041] The technical scheme of the utility model forms the accommodating cavity between the rear shell and the back plate, and suspends the sound generating part therein, to achieve the independent purpose of the sound generating part, and the sound generating state is not affected by the arrangement of the back plate and the rear shell, the compliance (elastic property of loudspeaker vibration system) and vibration degree of freedom are obviously improved, not only make the whole sound generating structure more compact, but also provide sufficient space for the vibration of the sound generating part, improve the output efficiency and sound generating effect of sound. And one of the sub-chambers is arranged in a sealed manner, and the other sub-chamber is provided with a sound hole, so that the sound generating structure can be installed on the television, and a high loudness and wide frequency response range can be obtained. BRIEF DESCRIPTION OF DRAWINGS

[0042] 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 described in the following are only some of the embodiments of the present application, and for the ordinary skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creative labor.

[0043] Fig. 1 The cross-sectional structure schematic diagram of the sound production structure embodiment provided by the present application is shown in the figure.

[0044] Fig. 2 The three-dimensional structure schematic diagram of the sound production structure in which the sound production part and the excitation body are connected is shown in the figure.

[0045] Fig. 3 The three-dimensional structure schematic diagram of the sound production structure embodiment (the back plate is not shown) provided by the present application is shown in the figure.

[0046] Fig. 4 The three-dimensional structure schematic diagram of the sound production structure embodiment provided by the present application is shown in the figure.

[0047] Explanation of the reference signs:

[0048] 100, sound production structure; 1, back plate; 11, first protruding part; 2, rear shell; 21, sound transmission hole; 3, accommodating cavity; 31, sub-cavity; 311, first sub-cavity; 312, second sub-cavity; 32, sound production hole; 4, sound production part; 41, sound production diaphragm; 411, first side edge; 412, second side edge; 413, third side edge; 414, flange; 42, second protruding part; 5, excitation body; 6, annular sound insulation part; 61, first annular sound insulation part; 62, second annular sound insulation part.

[0049] 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

[0050] The technical solutions in the embodiments of the present application will be described clearly and completely in the following 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, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the present application.

[0051] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0052] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment 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, nor within the protection scope required by the present application.

[0053] The piezoelectric loudspeaker realizes sound emission through the stretching and contraction effect of its own material under alternating voltage due to the difference in sound emission principle, and the thickness of the driving components such as voice coil is saved compared with the electric loudspeaker.

[0054] At present, the piezoelectric vibrator is commonly used to drive the television screen or the television frame to emit sound, and the sound emission state is easily affected by the rib arrangement and thickness of the module structure, or the thickness and width of the frame, etc., resulting in poor sound emission effect.

[0055] The utility model provides a kind of sound emission structure and display device, to be able to be driven diaphragm independent, reduce the influence of the module structure such as television frame or television screen on sound emission state, improve sound emission effect.

[0056] Please refer to Figs. 1 to 4 In an embodiment of the present application, the sound emission structure 100 includes a back plate 1, a rear shell 2, a sound emission part 4 and an excitation body 5. The rear shell 2 is arranged on the back side of the back plate 1, and a containing cavity 3 is formed between the back plate 1 and the rear shell 2. The sound emission part 4 is at least partially suspended in the containing cavity 3 to divide the containing cavity 3 into two sub-cavities 31, one of which is airtight, and the other has a sound emission hole 32. The excitation body 5 is arranged in the containing cavity 3 to excite the sound emission part 4 to vibrate and emit sound.

[0057] The utility model discloses a technical scheme through forming the accommodation cavity 3 between the rear shell 2 with the backboard 1, and suspending the sound production part 4 in it, reaches the independent purpose of sound production part 4, its sound production state is not affected by the arrangement of backboard 1 and rear shell 2, its compliance (elasticity characteristic of loudspeaker vibration system) and vibration degree of freedom all have obvious promotion, not only make the whole sound production structure 100 more compact, also provides enough space for the vibration of sound production part 4, improves the output efficiency and sound production effect of sound.

[0058] In some embodiments, the excitation body 5 is directly connected to the sound production part 4, which can be bonded, welded, buckled or integrated.

[0059] It is worth mentioning that in order to maximize the sound conduction of the excitation body 5 on the sound production diaphragm 41, the excitation body 5 can be placed in the middle position of the sound production diaphragm 41, preferably, the size length direction of the excitation body 5 is 1:4, the width direction is 1:8, and the thickness direction is 2:1.

[0060] In an embodiment, the sound production structure 100 further comprises two annular sound insulation parts 6 arranged in the front-back direction, the sound production part 4 is sandwiched between the two annular sound insulation parts 6, and the side wall of the sub-cavity 31 comprises a corresponding annular sound insulation part 6. By arranging the annular sound insulation part 6, an effective acoustic barrier can be formed around the sound production part 4, reducing the possibility of sound leakage from unintended paths, thereby improving the directivity of sound production. Moreover, the annular sound insulation part 6 not only serves as a physical isolation, but also as part of acoustic tuning, helping to adjust the sound field characteristics in each sub-cavity 31, so that the entire sound production structure 100 can maintain good response in a wider frequency range.

[0061] In order to improve the isolation effect of the sub-cavity 31, in an embodiment, the two annular sound insulation parts 6 are bonded to the sound production part 4. In this way, by using the bonding method, the sealing property of the sub-cavity 31 is improved, which helps to prevent sound leakage and also prevents external noise from interfering.

[0062] In an embodiment, the two sound insulation parts 6 include a first ring-shaped sound insulation part 61 and a second ring-shaped sound insulation part 62 located at the back side of the first ring-shaped sound insulation part 61, wherein the end of the first ring-shaped sound insulation part 61 away from the second ring-shaped sound insulation part 62 is adhered to the back plate 1. In this way, the end of the first ring-shaped sound insulation part 61 is fixed to the back plate 1, which supports the sound generating part 4 and improves the stability and reliability of the sound insulation part. In addition, the first ring-shaped sound insulation part 61 and the back plate 1 are tightly connected by adhesion, which reduces sound leakage.

[0063] It should be noted that the thickness of the first ring-shaped sound insulation part 61 is higher than that of the exciter 5, which reduces the contact between the back shell 2 and the exciter 5, and provides better sound insulation effect and structural stability.

[0064] Considering the complexity of the back shell 2, it may be necessary to disassemble and install it. In an embodiment, the end of the second ring-shaped sound insulation part 62 away from the first ring-shaped sound insulation part 61 is sealed against the back shell 2. In this way, the first ring-shaped sound insulation part 61 is not fixed to the back shell 2 by abutting, which facilitates the disassembly of the back shell 2 and does not damage the first ring-shaped sound insulation part 61, thereby improving the service life.

[0065] It can be understood that the setting mode of the first ring-shaped sound insulation part 61 in the embodiment is not limited, and foam, fiber material, etc. can be used. Specifically, in an embodiment, the material of the first ring-shaped sound insulation part 61 includes sponge. In this way, the sponge has a porous structure, and the small pores can effectively absorb sound wave energy and reduce sound reflection and propagation.

[0066] Of course, in order to improve the sound guiding effect, in an embodiment, the material of the second ring-shaped sound insulation part 62 includes ethylene-vinyl acetate copolymer. In this way, the sound directivity and clarity can be significantly improved by the sound insulation performance of ethylene-vinyl acetate copolymer (EVA), and sound leakage and interference can be reduced. In addition, EVA has the effect of easy processing and molding, and can be accurately cut, shaped and bonded according to the actual needs of the sound generating structure 100.

[0067] It can be understood that the sound generating part 4 can be arranged in various ways, such as a thin plate, a diaphragm, etc. In an embodiment, the sound generating part 4 comprises a sound generating diaphragm 41, wherein the material of the sound generating diaphragm 41 comprises one of metal, polycarbonate and polyethylene terephthalate. In this way, by arranging the sound generating part 4 as a sound generating diaphragm 41, the weight and size of the sound generating structure 100 itself are reduced, and the purpose of lightweight use is achieved. At the same time, the material of the sound generating diaphragm 41 can be a metal diaphragm, which has good rigidity and conductivity; can be polycarbonate, which has good transparency and processing performance; or can be polyethylene terephthalate, which has good insulation and weather resistance. Preferably, in the present embodiment, the sound generating diaphragm 41 is arranged as a metal diaphragm, which can withstand a large vibration amplitude and frequency, and is suitable for sound generating applications that require high power and high sound quality. At the same time, the metal material also has good corrosion resistance, which can prolong the service life of the sound generating diaphragm 41.

[0068] In an embodiment, the sound generating diaphragm 41 is integrally formed. In this way, the integrally formed sound generating diaphragm 41 reduces the joints and connection points caused by splicing or assembly, which can reduce the distortion of sound during transmission and improve the clarity and accuracy of sound.

[0069] In some embodiments, the excitation body 5 can be arranged in various ways, such as an electromagnetic exciter, a silent exciter, and a piezoelectric vibrator, etc. Considering the use in a display, in order to reduce the thickness, in the present embodiment, the excitation body 5 comprises a piezoelectric vibrator. In this way, by using the piezoelectric vibrator, the purpose of small size, light weight and easy integration into various compact devices is achieved, and the purpose of making the sound generating structure 100 into an ultra-thin design is achieved.

[0070] In an embodiment, the two sub-chambers 31 comprise a first sub-chamber 311 and a second sub-chamber 312, the sound generating hole 32 is arranged in the first sub-chamber 311, and the excitation body 5 is arranged in the second sub-chamber 312. In this way, by arranging the excitation body 5 and the sound generating hole 32 in different sub-chambers 31, the direct acoustic coupling between them can be effectively reduced, which is beneficial to improve the quality of sound and reduce unnecessary resonance or noise interference.

[0071] In an embodiment, the sound generating part 4 comprises a sound generating diaphragm 41, the sound generating diaphragm 41 comprises a first side edge 411 corresponding to the sound generating hole 32, a second side edge 412 opposite to the first side edge 411, and two third side edges 413 opposite to each other and connecting the first side edge 411 and the second side edge 412, wherein the first side edge 411 is a straight edge. In this way, by aligning the straight first side edge 411 with the sound generating hole 32, the loss and interference of sound during transmission can be minimized, and the clarity and directivity of sound can be improved.

[0072] In an embodiment, the sound generating part 4 comprises a sound generating diaphragm 41, the sound generating diaphragm 41 comprises a first side edge 411 corresponding to the sound generating hole 32, a second side edge 412 opposite to the first side edge 411, and two third side edges 413 opposite to each other and connecting the first side edge 411 and the second side edge 412, wherein the second side edge 412 is an arc-shaped edge. In this way, by arranging the second side edge 412 as an arc-shaped edge, the straight reflection path of sound can be effectively broken, preventing the formation of straight reflection path, thereby reducing the formation of standing wave, and further improving the sound quality, reducing the reflection of sound, and improving the continuity and stability of the sound of the sound generating structure 100.

[0073] In an embodiment, the sound generating part 4 comprises a sound generating diaphragm 41, the sound generating diaphragm 41 comprises a first side edge 411 corresponding to the sound generating hole 32, a second side edge 412 opposite to the first side edge 411, and two third side edges 413 opposite to each other and connecting the first side edge 411 and the second side edge 412, wherein at least one of the two third side edges 413 is a straight edge. In this way, arranging a straight edge on the sound generating diaphragm 41 can increase its rigidity, especially when subjected to pressure changes (such as large air pressure fluctuations caused by low frequency sound), which helps to maintain the shape of the sound generating diaphragm 41 and prevent deformation. Moreover, the first side edge 411, the second side edge 412, and the third side edge 413 can be adjusted according to actual needs, improving the flexibility of use.

[0074] In an embodiment, the two sub-chambers 31 include a first sub-chamber 311 and a second sub-chamber 312, the sound emitting hole 32 is arranged in the first sub-chamber 311, the chamber wall of the first sub-chamber 311 includes the back plate 1, the chamber wall of the second sub-chamber 312 includes the rear shell 2, and the exciter 5 is arranged in the second sub-chamber 312; the sound emitting part 4 includes a sound emitting diaphragm 41, the edge of the sound emitting diaphragm 41 is provided with a flange 414 extending away from the rear shell 2, and the flange 414 is arranged outside the outer side wall of the accommodating cavity 3. In this way, by taking the back plate 1 as a part of the first sub-chamber 311, the sound emitting diaphragm 41 can be supported and protected, and unnecessary structure arrangement is reduced; by taking the rear shell 2 as a component of the second sub-chamber 312, the exciter 5 can be accommodated and necessary structural support can be provided for the exciter 5, and the purpose of reducing additional structure arrangement is achieved, and the effect of light weight use is achieved. By arranging the flange 414, the first annular sound insulation part 61 is supported and facilitated to be fixed.

[0075] In an embodiment, the sound emitting diaphragm 41 includes a first side 411 corresponding to the sound emitting hole 32, a second side 412 opposite to the first side 411, and two third sides 413 opposite to each other and connected between the first side 411 and the second side 412, wherein the flange 414 is arranged at the second side 412. In this way, the flange 414 can be used as a fixing point (a platform or an edge) for fixing the sound emitting diaphragm 41 to the back plate 1, the sound emitting diaphragm 41 can be kept stable when vibrating, and an effective sound transmission path is provided.

[0076] In an embodiment, the sound emitting diaphragm 41 includes a first side 411 corresponding to the sound emitting hole 32, a second side 412 opposite to the first side 411, and two third sides 413 opposite to each other and connected between the first side 411 and the second side 412, wherein the flange 414 is arranged at the second side 412. In this way, the flange 414 can be used as a fixing point (a platform or an edge) for fixing the sound emitting diaphragm 41 to the back plate 1, the sound emitting diaphragm 41 can be kept stable when vibrating, and an effective sound transmission path is provided.

[0077] In an embodiment, the back side end of the back plate 1 is provided with a first protruding part 11, the sound generating part 4 comprises a sound generating diaphragm 41, the back side end of the sound generating diaphragm 41 is provided with a second protruding part 42, and the first protruding part 11 and the second protruding part 42 are connected through a threaded connection structure. In this way, the sound generating diaphragm 41 and the back plate 1 are fixed, and the threaded connection structure is used to fix the sound generating structure 100 in the accommodating cavity 3, thereby improving the stability and reliability during use.

[0078] It should be noted that the second protruding part 42 can be manufactured by stamping and integrated forming process, and the first protruding part 11 can also be manufactured by stamping process. The first protruding part 11 and the second protruding part 42 can be installed in the front-rear direction.

[0079] It can be understood that in some embodiments, the threaded connection structure can be a screw connection, which does not require a nut and has a relatively simple structure. For example, threaded holes are formed in the first protruding part 11 and the second protruding part 42, and the first protruding part 11 and the second protruding part 42 are connected by bolts. Alternatively, a bolt connection can be used, for example, a through hole is formed in the first protruding part 11 and the second protruding part 42, and the first protruding part 11 and the second protruding part 42 are fixed by a bolt rod passing through the through hole. The specific structure is simple and can be disassembled and assembled multiple times.

[0080] In an embodiment, the rear shell 2 is provided with a sound transmission hole 21 corresponding to the sound generating hole 32. In this way, the sound transmission hole 21 facilitates direct transmission of sound, achieves the purpose of sound generation, and improves the smoothness of sound.

[0081] The display device also comprises a sound generating structure 100, and the specific structure of the sound generating structure 100 is as described above. Since the display device adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0082] In an embodiment, the accommodating cavity 3, the sound generating part 4, and the excitation body 5 are one-to-one corresponding to a sound generating structure group, and a plurality of sound generating structure groups are provided. In this way, the number of sound generating structure groups can be set according to the user's use requirements, thereby improving flexibility.

[0083] In an embodiment, the display device comprises a television. In this way, the television can be used by using the sound generating structure 100, so that the television has the performance of high loudness and wide frequency response range.

[0084] The above merely describes preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the inventive concept of the present application, and by using the content of the present application specification and drawings, are included in the patent protection scope of the present application.

Claims

1. A sound producing structure, characterized by, The sound production structure comprises: a back plate; a rear shell arranged at the back side of the back plate, and a containing cavity is formed between the back plate and the rear shell; a sound production part at least partially suspended in the containing cavity to divide the containing cavity into two sub-cavities, one of which is airtight, and the other is provided with a sound production hole; and an excitation body arranged in the containing cavity to excite the sound production part to vibrate and produce sound.

2. The sound producing structure of claim 1, wherein, The sound production structure further comprises two annular sound insulation parts arranged in the front-rear direction, the sound production part is clamped between the two annular sound insulation parts, and the side wall of the sub-cavity comprises corresponding annular sound insulation parts.

3. The sound producing structure of claim 2, wherein, Both of the two annular sound insulation parts are adhered to the sound production part.

4. The sound producing structure of claim 2, wherein, The two annular sound insulation parts comprise a first annular sound insulation part and a second annular sound insulation part at the back side of the first annular sound insulation part, wherein: the end of the first annular sound insulation part away from the second annular sound insulation part is adhered to the back plate; and / or the end of the second annular sound insulation part away from the first annular sound insulation part is sealingly abutted on the rear shell.

5. The sound producing structure of claim 4, wherein, The material of the first annular sound insulation part comprises sponge; and / or The material of the second annular sound insulation part comprises ethylene-vinyl acetate copolymer.

6. The sound producing structure of claim 1, wherein, The sound production part comprises a sound production diaphragm, the sound production diaphragm comprises a first side edge corresponding to the sound production hole, a second side edge arranged opposite to the first side edge, and two third side edges connected between the first side edge and the second side edge, wherein: the first side edge is arranged as a straight edge; and / or the second side edge is arranged as an arc-shaped edge; and / or at least one of the two third side edges is arranged as a straight edge.

7. The sound producing structure of claim 1, wherein, The two sub-cavities comprise a first sub-cavity and a second sub-cavity, the sound production hole is arranged in the first sub-cavity, the cavity wall of the first sub-cavity comprises the back plate, the cavity wall of the second sub-cavity comprises the rear shell, and the excitation body is arranged in the second sub-cavity. The sound production part comprises a sound production diaphragm, the edge of the sound production diaphragm is provided with a turned edge extending away from the rear shell, and the turned edge is arranged outside the outer side wall of the containing cavity.

8. The sound producing structure of claim 7, wherein, The sound production diaphragm comprises a first side edge corresponding to the sound production hole, a second side edge arranged opposite to the first side edge, and two third side edges connected between the first side edge and the second side edge, wherein: the second side edge is provided with the turned edge; and / or at least one of the two third side edges is provided with the turned edge.

9. The sound producing structure of claim 1, wherein, The sound production part comprises a sound production diaphragm, wherein: the material of the sound production diaphragm comprises one of metal, polycarbonate and polyethylene terephthalate; and / or the sound production diaphragm is integrally formed.

10. The sound producing structure of claim 1, wherein, The excitation body is adhered to the sound production part; and / or The excitation body comprises a piezoelectric vibrator; and / or The two sub-cavities comprise a first sub-cavity and a second sub-cavity, the sound production hole is arranged in the first sub-cavity, and the excitation body is arranged in the second sub-cavity.

11. The sound producing structure of claim 1, wherein, The back side end of the back plate is provided with a first protruding part, the sound production part comprises a sound production diaphragm, the back side end of the sound production diaphragm is provided with a second protruding part, and the first protruding part and the second protruding part are connected through a threaded connection structure.

12. The sound producing structure of claim 1, wherein, A sound transmission hole is arranged on the rear shell and corresponds to the sound emitting hole.

13. A display device comprising: The sound emitting structure comprises the sound emitting structure as claimed in any one of claims 1 to 12.

14. The display device of claim 13, wherein, The accommodating cavities, the sound emitting parts and the excitation bodies are arranged one by one as a sound emitting structure group, and the sound emitting structure group is arranged in multiple.

15. A display device as claimed in claim 13 or 14, characterized in that The display device comprises a television.

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