Loudspeaker assembly and all-in-one machine

By setting the speaker component on the side and back plate of the LED display screen, using the fixed structure of the cover and the frame, the audio-visual effect problem caused by the position difference of the built-in speaker module of the LED all-in-one machine is solved, and multi-directional sound field output is achieved, improving the The user's auditory experience.

CN222366389UActive Publication Date: 2025-01-17XIAN QINGSONG PHOTOELECTRIC TECH CO LTD
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Patent Information

Application Number
CN202420143883.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-19
Publication Date
2025-01-17
Estimated Expiration
2034-01-19

AI Technical Summary

Technical Problem

The built-in speaker module of the LED all-in-one machine is located at the bottom of the display screen, resulting in a difference between the audio output position and the user's listening position, affecting the audio-visual effect.

Method used

The speaker assembly is arranged on the display screen, including at least one speaker unit and a cover body, the cover body is fixed to the frame of the display screen to form a housing space, the speaker unit is located in the housing space, and partly located on the side and back of the display screen On the board, the multi-directional sound field output of the speaker assembly is achieved by fixing the cover and the frame.

Benefits of technology

It provides a sound field other than the bottom of the display, providing users with stereo sound effects from multiple directions, improving users' auditory experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a loudspeaker assembly and an all-in-one machine, the loudspeaker assembly is arranged on a display screen and comprises at least one loudspeaker unit and a cover body, the cover body is fixed on a frame of the display screen, the cover body and the frame of the display screen form an accommodating space, and the loudspeaker assembly is located in the accommodating space. The loudspeaker unit is fixed on the display screen by fixing the cover plate and the frame, so that the loudspeaker assembly can be arranged on the side edge of the display screen, and the loudspeaker assembly can generate a sound field from the side edge of the display screen, provide a sound field except the bottom of the display screen, provide a three-dimensional sound effect for a user from multiple directions, and improve the auditory experience of the user.
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Description

Technical Field

[0001] The present application relates to the technical field of all-in-one machines, and in particular to a speaker assembly and an all-in-one machine. Background Art

[0002] Currently, LED all-in-one machines generally have speaker units due to their meeting or video playback needs. External speakers do not conform to the basic design concept of all-in-one machines. Therefore, most conventional LED all-in-one machines have a built-in speaker module in the bottom controller module.

[0003] However, since the size of LED display screens is generally large, the built-in speaker module is located at the bottom of the display screen, and the sound field effect is emitted from the bottom. There is a difference between the audio emission position and the user's listening position, which in turn affects the user's audio-visual effect. Utility Model Content

[0004] The present application provides a speaker assembly and an all-in-one machine to solve the above technical problems. The speaker assembly is arranged on a display screen, the display screen includes a frame, and the speaker assembly includes:

[0005] at least one speaker unit;

[0006] A cover body, mounted on the frame together with the speaker unit;

[0007] The cover is fixed on the frame, the cover and the frame form a containing space, and the speaker unit is located in the containing space.

[0008] The speaker unit is L-shaped, with part of the speaker unit located on the back panel of the display screen and the other part of the speaker unit located on the side of the display screen. The side of the display screen is adjacent to the back panel, and the frame is installed on the side.

[0009] The speaker assembly includes a first speaker unit and a second speaker unit, the first speaker unit and the second speaker unit are arranged at intervals along the extension direction of the side of the display screen, and the first speaker unit and the second speaker unit are located in the accommodating space.

[0010] Wherein, the speaker unit includes a first fixing member, and the speaker unit is installed on the cover body through the first fixing member.

[0011] Wherein, the cover body includes two second fixing members and a third fixing member;

[0012] The second fixing members are respectively arranged at two ends of the cover body along the length direction, and the cover body is fixed to the frame through the second fixing members; wherein the length direction of the cover body is parallel to the side of the display screen;

[0013] The third fixing member is arranged on a side of the cover body close to the display screen, and the cover body is fixed to the back plate of the display screen through the third fixing member;

[0014] The cover body fixes and shields a portion of the speaker unit located on the back panel of the display screen.

[0015] Wherein, the frame includes a first surface, the first surface is flush with the back plate of the display screen and has a notch;

[0016] The notch is arranged corresponding to the speaker unit, and the speaker unit in other parts is arranged in the frame through the notch.

[0017] The frame includes a second surface, which is flush with the display panel of the display screen and is provided with a plurality of through holes, wherein the display panel of the display screen is arranged opposite to the back panel of the display screen.

[0018] In order to solve the above technical problems, the present application also provides an all-in-one machine, including a display screen and the speaker assembly as described above;

[0019] Wherein, the all-in-one machine includes two speaker assemblies, which are respectively arranged on opposite sides of the display screen.

[0020] Wherein, the display screen includes a die-cast box module, and the speaker assembly is arranged on the die-cast box module.

[0021] Wherein, the display screen also includes a display panel, which is used to display images and is arranged on the first side of the die-casting box module; the speaker assembly is arranged on the second side of the die-casting box module, wherein the first side and the second side are arranged adjacent to each other.

[0022] Beneficial effects of the present application: Different from the prior art, the speaker assembly of the present application is arranged on the display screen, and includes at least one speaker unit and a cover body, wherein the cover body is fixed on the frame of the display screen, and then the cover body and the frame of the display screen form a containing space, and the speaker assembly is located in the containing space. By fixing the speaker unit on the display screen by fixing the cover plate and the frame, it is possible to set the speaker assembly on the side of the display screen, and then the speaker assembly can generate a sound field from the side of the display screen, providing a sound field in addition to the bottom of the display screen, providing stereo sound effects for users from multiple directions, and enhancing the user's auditory experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] in:

[0025] Figure 1 is a structural schematic diagram of the first embodiment of the speaker assembly of the present application;

[0026] Figure 2 is a bottom-up structural schematic diagram of the first embodiment of the speaker unit of the present application;

[0027] Figure 3 is a schematic diagram of a top view of the structure of a first embodiment of a speaker unit of the present application;

[0028] Figure 4 It is a structural schematic diagram of the first embodiment of the cover body of the present application;

[0029] Figure 5 is a structural schematic diagram of a second embodiment of a loudspeaker assembly of the present application;

[0030] Figure 6 is a structural schematic diagram of a third embodiment of a loudspeaker assembly of the present application;

[0031] Figure 7 is a structural schematic diagram of a fourth embodiment of a loudspeaker assembly of the present application;

[0032] Figure 8 It is a structural schematic diagram of the first embodiment of the all-in-one machine of the present application.

[0033] Figure numbers: all-in-one machine A; speaker assembly 1; speaker unit 11; first speaker unit 111; second speaker unit 112; first fixing member 113; cover body 12; second fixing member 121; third fixing member 122; display screen 2; frame 21; first surface 211; second surface 212; die-casting box module 22; display panel 23. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0035] The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0036] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] See also Figure 1 , Figure 1 The speaker assembly 1 provided in the embodiment of the present application is arranged on a display screen 2 , the display screen 2 includes a frame 21 , and the speaker assembly 1 includes at least one speaker unit 11 and a cover 12 .

[0038] Among them, the speaker unit 11 can be connected to the module responsible for audio power amplifier in the display screen 2, so as to conduct the sound emitted by the video stream displayed in the display screen 2. The cover 12 and the speaker unit 11 are installed on the frame 21 of the display screen 2. Specifically, the cover 12 can be fixed on the frame 21, and the cover 12 and the frame 21 form a containing space. The speaker unit 11 is located in the containing space, so that the cover 12 and the frame 21 can fix and shield the speaker unit 11. In one embodiment, the frame 21 can be set on the side of the display screen 2, and then the speaker assembly 1 is fixed on the side of the display screen 2, providing the user with a sound field on the side of the display screen 2, thereby enhancing the user's auditory experience.

[0039] The speaker unit 11 is fixed in the accommodation space formed by the cover 12 and the frame 21, and then transmits the sound emitted by the video stream displayed on the display screen 2. The cover 12 and the frame 21 fix and shield the speaker unit 11 to prevent dust in the environment from falling on the speaker unit 11 and interfering with the sound quality transmitted by the speaker unit 11. At the same time, the speaker assembly 1 is arranged on the display screen 2 to provide a sound field for the display screen 2 except for the bottom, thereby providing stereo sound effects to users from multiple directions and improving the user's auditory experience.

[0040] Optionally, combine Figure 2 and Figure 3 , Figure 2 is a bottom-up structural schematic diagram of the first embodiment of the speaker unit of the present application; Figure 3 1 is a schematic diagram of a top view of the structure of the first embodiment of the speaker unit of the present application, wherein the speaker unit 11 is L-shaped, part of the speaker unit 11 is located on the back panel of the display screen 2, and the other part of the speaker unit 11 is located on the side of the display screen 2, the side of the display screen 2 is adjacent to the back panel, and the frame 21 is installed on the side.

[0041] In this embodiment, please refer to Figure 2 , the B end of the speaker unit 11 is arranged on the back plate of the display screen 2, the C end of the speaker unit 11 is arranged on the side of the display screen 2, and then, the cover 12 is arranged on the B end of the speaker unit 11, and the frame 21 is arranged on the C end of the speaker unit 11. Among them, the back plate of the display screen 2 is arranged on the back side opposite to the display area surface of the display screen 2. It can be understood that the cover 12 cooperates with the frame 21 to fix the speaker unit 11 on the display screen 2, and the cover 12 and the frame 21 cooperate to shield the speaker unit 11.

[0042] At the same time, the speaker unit 11 is not entirely disposed on the side of the display screen 2, but is partially disposed on the side and partially disposed on the back panel, thereby avoiding the prior art of directly adding speakers to the side of the display screen, resulting in a large and unsightly display screen, or reducing the speaker volume to ensure the beauty of the display screen, while the reduced speaker has a poor sound-conducting effect. The speaker unit 11 in the embodiment of the present application is only partially disposed on the side of the display screen 2 while ensuring the sound-conducting effect, thereby ensuring the aesthetics of the display screen 2.

[0043] In other embodiments, the speaker assembly 1 is not limited to being arranged on the display screen 2, but can also be arranged on a device that can display a video stream, such as an outdoor display glass panel, a mobile phone, etc.; or a device that only plays audio. The speaker unit 11 is partially arranged on the back panel of the device, and partially arranged on the side of the device. The cover 12 shields the speaker unit 11, and the speaker unit 11 conducts the sound of the video stream displayed by the device. Without significantly affecting the appearance of the device, another sound field is generated for the device to improve the user's auditory experience.

[0044] Optionally, see Figure 1 The speaker assembly 1 may include a first speaker unit 111 and a second speaker unit 112 .

[0045] The first speaker unit 111 and the second speaker unit 112 are spaced apart from each other along the extension direction of the side of the display screen 2 , and both the first speaker unit 111 and the second speaker unit 112 are located in the accommodation space formed by the cover body 12 and the frame 21 .

[0046] In this embodiment, the speaker assembly 1 includes two speaker units 11, and the two speaker units 11 are spaced apart along the extension direction of the side of the display screen 2, thereby expanding the sound field range generated by the speaker units 11 and providing users with more three-dimensional sound effects.

[0047] At the same time, the two speaker units 11 are located in the accommodating space, that is, the cover 12 and the frame 21 fix and shield the first speaker unit 111 and the second speaker unit 112, so as to prevent dust in the environment from interfering with the sound field generated by the first speaker unit 111 and the second speaker unit 112, thereby ensuring the sound quality transmitted by the first speaker unit 111 and the second speaker unit 112.

[0048] Optional, please continue to Figure 2 , the speaker unit 11 includes a first fixing member 113 .

[0049] In this embodiment, the first fixing member 113 can be provided at both ends of the speaker unit 11 along the extension direction, that is, the speaker unit 11 can include two first fixing members 113. The speaker unit 11 is fixed to the cover body 12 by the first fixing member 113. It can be understood that the cover body 12 can be provided with a matching member corresponding to the first fixing member 113, and then the first fixing member 113 can be fixed to the matching member by a detachable manner such as screw assembly, so as to realize that the speaker unit 11 is fixed to the cover body 12, and the stability of the speaker unit 11 in the accommodation space is improved.

[0050] In other embodiments, the speaker unit 11 may further include more than two first fixing members 113, or the first fixing member 113 is a sub-clip, and a main clip is provided on the cover 12, and the speaker unit 11 is fixed to the cover 12 by the snap-fitting mode of the sub-clip and the main clip. The present application does not specifically limit the number of the first fixing members 113 provided on the speaker unit 11, the specific structure of the first fixing member 113, and how the speaker unit 11 is fixed to the cover 12 by the first fixing member 113.

[0051] Optionally, see Figure 4 and Figure 5 , Figure 4 It is a structural schematic diagram of the first embodiment of the cover body of the present application; Figure 5 1 is a schematic diagram of the structure of the second embodiment of the speaker assembly of the present application. The cover body 12 includes two second fixing members 121 and a third fixing member 122 .

[0052] The two second fixing members 121 are respectively arranged at the two ends of the cover body 12 along the length direction, and the cover body 12 is fixed to the frame 21 through the second fixing members 121. The length direction of the cover body 12 is parallel to the side of the display screen 2, that is, the length direction of the cover body 12 is parallel to the frame, and thus the two second fixing members 121 on the cover body 12 can be arranged on the frame 21. The third fixing member 122 is arranged on the side of the cover body 12 close to the display screen 2, and the cover body 12 is fixed to the back plate of the display screen 2 through the third fixing member 122.

[0053] In this embodiment, nut holes may be provided on the frame 21 and the back plate of the display screen 2 at positions corresponding to the second fixing member 121 and the third fixing member 122, and the second fixing member 121 and the third fixing member 122 may be fixed to the frame 21 and the back plate of the display screen 2 by screws, respectively, so as to achieve the fixing of the cover body 12 to the frame 21 and the back plate of the display screen 2. In other embodiments, the second fixing member 121 and the third fixing member 122 may also be fixed to the frame 21 and the back plate of the display screen 2 by snap-fitting. The present application does not limit the specific manner in which the second fixing member 121 and the third fixing member 122 are fixed to the frame 21 and the back plate of the display screen 2.

[0054] In other embodiments, a plurality of third fixing members 122 may also be provided on the side of the cover body 12 close to the back plate of the display screen 2 to ensure that the cover body 12 is more firmly fixed to the back plate of the display screen 2 .

[0055] The cover 12 is fixed to the frame 21 and the back plate of the display screen 2, and the speaker unit 11 is fixed to the cover 12, so that the speaker unit 11 is partially fixed to the back plate of the display screen 2, further strengthening the arrangement of the speaker unit 11 on the display screen 2. The cover 12 is fixed to the frame 21, and then the cover 12 realizes the partial speaker unit 11 located on the back plate of the display screen 2, that is, Figure 2 The B end of the middle speaker unit 11 is fixed and shielded.

[0056] Optionally, see Figure 1 and Figure 6 , Figure 6 2 is a schematic diagram of the structure of the third embodiment of the speaker assembly of the present application. The frame 21 includes a first surface 211 .

[0057] The first surface is the surface of the frame 21 close to the cover 12. The first surface 211 is flush with the back plate of the display screen 2 and has a notch. The notch is set corresponding to the speaker unit 11, that is, Figure 1 As shown, the notch of the frame 21 is arranged corresponding to the position where the speaker unit 11 is arranged on the display screen 2, and then the other part of the speaker unit 11, that is, the C end of the speaker unit 11, is arranged in the frame 21 through the notch.

[0058] It is understandable that, since the cover 12 is mounted on the frame 21 and the back plate of the display screen 2, the frame 21 is mounted on the side of the display screen 2, and the first surface of the frame 21 has a notch corresponding to the speaker unit 11, the display screen 2, the cover 12 and the frame 21 form an L-shaped accommodation space, and the L-shaped speaker unit 11 can be perfectly arranged in the accommodation space. The speaker unit 11 is fixed on the display screen 2, and the cover 12 and the frame 21 fix and shield the speaker unit 11, ensuring the aesthetics of the display screen 2 provided with the speaker assembly 1. At the same time, the speaker assembly 1 arranged on the side of the display screen 2 provides the display screen 2 with more directional sound fields, thereby improving the user's auditory experience.

[0059] Optional, please continue to Figure 7 , Figure 7 2 is a schematic diagram of the structure of the fourth embodiment of the speaker unit of the present application. The frame 21 includes a second surface 212 .

[0060] The second surface 212 is a surface arranged opposite to the first surface 211, and the second surface 212 is flush with the display panel 23 of the display screen, wherein the display panel 23 is a display area of ​​the display screen 2, and is used to display the video stream. The display panel 23 and the back panel are two surface panels arranged opposite to each other on the display screen 2. The second surface 212 is provided with a plurality of through holes, and the speaker unit 11 may include a sound guide tube for directional conduction of sound, such as Figure 2At the C end, in the present embodiment, the pressure-conducting tube of the speaker unit 11 can be arranged toward the through hole of the second surface 212, and then the speaker unit 11 and the through hole cooperate to make the sound transmission direction from the display panel 23 to the user facing the display panel 23, and the speaker unit 11 transmits the sound to the user from the side of the display panel 2 (which is approximately at the same horizontal plane as the user), thereby improving the user's auditory experience.

[0061] The speaker unit 11 is arranged on the display screen 2, and the cover 12 and the frame 21 fix and shield the speaker unit 11, thereby ensuring the stability of the speaker unit 11 on the display screen 2, and isolating the speaker unit 11 from dust in the environment, thereby preventing dust from damaging the speaker unit 11, and ensuring the working performance of the speaker unit 11. Furthermore, the speaker unit 11 is partially located on the back plate of the display screen 2, and partially located on the side of the display screen 2, and the cover 12 and the frame 21 shield the speaker unit 11, thereby ensuring the aesthetics of the speaker unit 11 arranged on the display screen 2.

[0062] This application also provides an all-in-one machine, please refer to Figure 8 , Figure 8 The first embodiment of the all-in-one machine of the present application is shown in FIG.

[0063] Among them, the all-in-one machine A includes two speaker assemblies 1, and the two speaker assemblies 1 are respectively arranged on opposite sides of the display screen 2, so as to transmit the sound emitted by the video stream displayed on the display screen 2, generate a sound field on the side of the display screen 2, provide the user with multi-directional stereo sound effects, and enhance the user's auditory experience.

[0064] Optional, please combine Figure 1 The display screen 2 includes a die-cast box module 22, wherein the die-cast box module 22 includes a frame of the display screen 2 and a functional module arranged in the frame, and the speaker assembly 1 is arranged on the die-cast box module 22. Specifically, the speaker assembly 1 is arranged on the side of the die-cast box module 22, and is connected to the module responsible for the audio amplifier of the display screen 2 through the interface on the die-cast box module 22 to receive the sound to be conducted.

[0065] Optionally, the display screen 2 also includes a display panel 23, which is used to display the picture watched by the user. The display panel 23 is arranged on the first side of the die-casting box module 22, and the speaker assembly 1 is arranged on the second side of the die-casting box module 22, wherein the first side and the second side are arranged adjacent to each other.

[0066] Specifically, the second side is the side of the die-casting box module 22, and the first side is the front of the die-casting box module 22, so that the speaker assembly 1 is arranged on the side of the display panel 23 to provide the user with a sound field on the side of the display panel 23, thereby enhancing the user's auditory experience.

[0067] Different from the prior art, the all-in-one machine A provided in the embodiment of the present application includes a speaker assembly 1 and a display screen 2. The speaker assembly 1 is arranged on the side of the display screen 2 to provide the user with a sound field on the side of the display screen 2, thereby improving the user's experience of using the all-in-one machine A. At the same time, the speaker assembly 1 includes a cover 12, and the display screen 2 includes a frame 21. The cover 12 and the frame 21 fix and shield the speaker unit 11 used for sound conduction in the speaker assembly 1, so that the speaker unit 11 is stable on the display screen 2. The cover 12 and the frame 21 isolate the dust in the environment from the speaker unit 11, thereby ensuring the working performance of the speaker unit 11. At the same time, the speaker unit 11 is partially arranged on the back panel of the display screen 2, and partially arranged on the side of the display screen 2. Due to the modification of the cover 12 and the frame 21, when the speaker assembly 1 and the display screen 2 are integrated, the aesthetics of the speaker assembly 1 arranged on the display screen 2 is ensured, thereby improving the user's experience of using the all-in-one machine A.

[0068] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A speaker assembly, characterized in that: The speaker assembly is arranged on a display screen, the display screen includes a frame, and the speaker assembly includes: at least one speaker unit; A cover body, mounted on the frame together with the speaker unit; The cover is fixed on the frame, the cover and the frame form a containing space, and the speaker unit is located in the containing space.

2. The loudspeaker assembly according to claim 1, characterized in that The speaker unit is L-shaped, part of the speaker unit is located on the back panel of the display screen, and the other part of the speaker unit is located on the side of the display screen. The side of the display screen is adjacent to the back panel, and the frame is installed on the side.

3. The loudspeaker assembly according to claim 1, characterized in that The speaker assembly includes a first speaker unit and a second speaker unit. The first speaker unit and the second speaker unit are arranged at intervals along the extension direction of the side of the display screen, and the first speaker unit and the second speaker unit are located in the accommodating space.

4. The loudspeaker assembly according to any one of claims 1 to 3, characterized in that: The speaker unit comprises a first fixing member, and the speaker unit is mounted on the cover body through the first fixing member.

5. The loudspeaker assembly according to claim 4, characterized in that The cover body includes two second fixing members and a third fixing member; The second fixing members are respectively arranged at two ends of the cover body along the length direction, and the cover body is fixed to the frame through the second fixing members; wherein the length direction of the cover body is parallel to the side of the display screen; The third fixing member is arranged on a side of the cover body close to the display screen, and the cover body is fixed to the back plate of the display screen through the third fixing member; The cover body fixes and shields a portion of the speaker unit located on the back panel of the display screen.

6. The loudspeaker assembly according to claim 2, characterized in that The frame includes a first surface, the first surface is flush with the back plate of the display screen and has a notch; The notch is arranged corresponding to the speaker unit, and the speaker unit in other parts is arranged in the frame through the notch.

7. The loudspeaker assembly according to claim 1, characterized in that The frame includes a second surface, which is flush with the display panel of the display screen and is provided with a plurality of through holes, wherein the display panel of the display screen is arranged opposite to the back panel of the display screen.

8. An all-in-one machine, characterized in that: comprising a display screen and a speaker assembly as claimed in any one of claims 1 to 7; Wherein, the all-in-one machine includes two speaker assemblies, which are respectively arranged on opposite sides of the display screen.

9. The all-in-one machine according to claim 8, characterized in that: The display screen comprises a die-cast box module, and the speaker assembly is arranged on the die-cast box module.

10. The integrated machine according to claim 9, characterized in that: The display screen also includes a display panel, which is used to display images and is arranged on a first side of the die-casting box module; the speaker assembly is arranged on a second side of the die-casting box module, wherein the first side and the second side are arranged adjacent to each other.