Multimedia device

Abstract

The embodiment of the application provides a kind of multimedia equipment, comprising: display module, strut, base, mid-frequency sounding unit and high-frequency sounding unit;Strut one end is connected with base, display module is connected with strut;Mid-frequency sounding unit is set on strut, high-frequency sounding unit is set on display module;The sound direction of high-frequency sounding unit is parallel with the display screen included in display module;The angle between the sound direction of mid-frequency sounding unit and the normal line of the front of display screen is less than or equal to 90 degrees.The scheme makes the sound direction of high-frequency sounding unit parallel with the display screen included in display module, and the angle between the sound direction of mid-frequency sounding unit and the normal line of the front of display screen is less than or equal to 90 degrees, so that the sound direction of high-frequency sounding unit and mid-frequency sounding unit does not point to the back of display screen, thereby the acoustic directivity can be improved, and the experience of user is strengthened.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of intelligent mobile terminals, and in particular to a multimedia device. BACKGROUND

[0002] With the development of new generation information technology, users have an increasing demand for large-size interactive smart screens, but the existing large-size display screens do not have the feature of being conveniently movable, and are mostly fixed on a desktop or hung on a wall, which is inconvenient for users to interact in a touch manner.

[0003] At present, the problem of inconvenient movement of the existing interactive smart screens is solved by adding a support rod and a movable base under the interactive smart screen, such as the BFFY product.

[0004] However, in order to ensure the appearance, the current movable smart screen usually sets a mid-tone or high-tone loudspeaker behind the display screen, the mid-tone or high-tone loudspeaker sounds to the back of the screen, and the acoustic directivity is poor, resulting in poor user experience. SUMMARY

[0005] Therefore, embodiments of the present application provide a multimedia device to at least partially solve the above problems.

[0006] According to a first aspect of embodiments of the present application, a multimedia device is provided, comprising: a display module, a support rod, a base, a mid-frequency sound emitting unit and a high-frequency sound emitting unit; one end of the support rod is connected with the base, and the display module is connected with the support rod; the mid-frequency sound emitting unit is arranged on the support rod, and the high-frequency sound emitting unit is arranged on the display module; the sound emitting direction of the high-frequency sound emitting unit is parallel to a display screen included in the display module; and the angle between the sound emitting direction of the mid-frequency sound emitting unit and the normal line of the front face of the display screen is less than or equal to 90 degrees.

[0007] From the above technical solution, by making the sound emitting direction of the high-frequency sound emitting unit parallel to the display screen included in the display module, and the angle between the sound emitting direction of the mid-frequency sound emitting unit and the normal line of the front face of the display screen less than or equal to 90 degrees, the sound emitting directions of the high-frequency sound emitting unit and the mid-frequency sound emitting unit will not point to the back of the display screen, thereby the acoustic directivity can be improved, and the user experience can be enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0008] 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 the prior art description. Obviously, the drawings in the following description are only some embodiments described in the embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0009] Figure 1 This is a schematic diagram of a multimedia device according to an embodiment of this application;

[0010] Figure 2 This is a schematic diagram of the structure of a multimedia device according to an embodiment of this application;

[0011] Figure 3 This is a schematic diagram of a multimedia device including a low-frequency sound unit according to an embodiment of this application;

[0012] Figure 4 This is a schematic diagram of a multimedia device according to another embodiment of this application;

[0013] Figure 5 This is a partial structural schematic diagram of a multimedia device according to an embodiment of this application;

[0014] Figure 6 This is a schematic diagram of a multimedia device including an audio cable according to an embodiment of this application;

[0015] Figure 7 This is a schematic diagram of a multimedia device including a U-shaped signal transmission line according to an embodiment of this application;

[0016] Figure 8 This is a cross-sectional schematic diagram of a display module according to an embodiment of this application;

[0017] Figure 9 This is a schematic diagram of a base according to an embodiment of this application. Detailed Implementation

[0018] The present application is described below based on embodiments, but it is not limited to these embodiments. In the detailed description of the present application below, certain specific details are described in detail. Those skilled in the art can fully understand the present application without these details. To avoid obscuring the essence of the present application, well-known methods, processes, and flows are not described in detail. Furthermore, the accompanying drawings are not necessarily drawn to scale.

[0019] Figure 1 A schematic diagram of a multimedia device according to an embodiment of this application is shown. Figure 2 This is a schematic diagram of the structure of a multimedia device according to an embodiment of this application. Figures 1-2As shown, the multimedia device 100 includes: a display module 101, a support rod 102, a base 103, an intermediate frequency sound unit 104, and a high frequency sound unit 105; one end of the support rod 102 is connected to the base 103, and the display module 101 is connected to the support rod 102; the intermediate frequency sound unit 104 is disposed on the support rod 102, and the high frequency sound unit 105 is disposed on the display module 101; the sound output direction of the high frequency sound unit 105 is parallel to the display screen 1011 included in the display module 101; the angle between the sound output direction of the intermediate frequency sound unit 104 and the front normal of the display screen 1011 is less than or equal to 90 degrees.

[0020] Current products that add a support rod and a movable base below an interactive smart screen typically place a mid-range or high-frequency speaker behind the display screen, emitting sound towards the back of the screen, resulting in poor acoustic directivity. To solve this problem, this application proposes a multimedia device 100, which places a high-frequency sound unit 105 on a display module 101, and makes the sound emission direction of the high-frequency sound unit 105 parallel to the display screen 1011 included in the display module 101. The sound emission direction of the high-frequency sound unit 105 can be defined by setting the sound emission range of the high-frequency sound unit 105's sound outlet to be parallel to the display screen 1011 included in the display module 101, or by setting a sound cavity on the display module 101, with a sound outlet at one end of the sound cavity to guide the sound signal emitted by the high-frequency sound unit 105 and emit it from the sound outlet, thereby setting the sound emission direction of the high-frequency sound unit 105. The intermediate frequency (IF) speaker unit 104 is mounted on the support rod 102. Similar to the way the high-frequency speaker unit 105 is positioned to emit sound, the sound output range of the IF speaker unit 104 can be set to have an angle less than or equal to 90 degrees between its output port and the normal to the front of the display screen 1011. This can also be achieved by setting a sound cavity and a sound outlet on the support rod 102. One end of the support rod 102 is connected to the base 103, and the display module 101 is connected to the support rod 102. The connection methods can be welding, threaded connection, or socket connection, etc. The back of the base 103 can be equipped with casters or other moving devices, allowing the user to move the multimedia device 100 by dragging or applying external force.

[0021] In this embodiment, by making the sound output direction of the high-frequency sound unit 105 parallel to the display screen 1011 included in the display module 101, and the angle between the sound output direction of the mid-frequency sound unit 104 and the front normal of the display screen 1011 is less than or equal to 90 degrees, the sound output directions of the high-frequency sound unit 105 and the mid-frequency sound unit 104 will not point to the back of the display screen 1011, thereby improving acoustic directivity and enhancing the user experience.

[0022] In a possible implementation, the mid-frequency sound unit 104 is connected to the other end of the support rod 102, or the mid-frequency sound unit 104 is connected between the two ends of the support rod 102.

[0023] The mid-frequency sound unit 104 can be arranged at the other end of the support rod 102 that is not connected to the base 103, or can be arranged at any position between the two ends of the support rod 102, or can be arranged inside the support rod 102.

[0024] In the embodiment of the present application, since the mid-frequency sound unit 104 can be arranged at any position of the support rod 102, higher flexibility is achieved, and more scenarios are adapted.

[0025] In a possible implementation, the display screen 1011 is a touch screen.

[0026] In the embodiment of the present application, since the display screen 1011 is a touch screen, the operation difficulty of the user can be reduced, and thus the experience of the user is improved.

[0027] Figure 3 is a schematic diagram of a multimedia device including a low-frequency sound unit according to an embodiment of the present application. As shown in Figure 3 The multimedia device 100 further includes a low-frequency sound unit 106; the low-frequency sound unit 106 is arranged inside the base 103, and an angle between an output direction of the low-frequency sound unit 106 and a normal line of a front surface of the base 103 is less than or equal to 90 degrees, where the front surface of the base 103 is connected to the support rod 102.

[0028] The low-frequency sound unit 106 can be arranged inside the base 103, and the low-frequency sound unit 106, the high-frequency sound unit 105, and the mid-frequency sound unit 104 constitute a three-way acoustic system, the output range of the output port of the low-frequency sound unit 106 can be set to be less than or equal to 90 degrees with respect to the normal line of the front surface of the base 103, or the output direction of the low-frequency sound unit 106 can be limited by arranging an acoustic cavity and an output hole on the base 103.

[0029] In the embodiment of the present application, by arranging the low-frequency sound unit 106, a three-way acoustic system is constituted with the high-frequency sound unit 105 and the mid-frequency sound unit 104, the frequency response range of the multimedia device 100 is improved, and thus the experience of the user is improved.

[0030] Figure 4 is a schematic diagram of a multimedia device according to another embodiment of the present application, Figure 5 is a partial structural schematic diagram of a multimedia device according to an embodiment of the present application. As shown in Figures 4-5 The support rod 102 includes a movable part 1021, a sliding block 1022, and a support rod 1023.

[0031] One end of the support rod 1023 is connected to the base 103, one end of the movable part 1021 is connected to the display module 101, and the other end of the movable part 1021 is connected to the slider 1022. The slider 1022 is mounted on the support rod 1023. The slider 1022 is used to drive the movable part 1021 and the display module 101 to move along the axis of the support rod 1023 when sliding along the support rod 1023.

[0032] The support rod 102 can be composed of a movable part 1021, a slider 1022, and a support rod 1023. The support rod 1023, as the main component, is connected to the base 103. An intermediate frequency sound unit 104 is provided on the support rod 1023. The intermediate frequency sound unit 104 can be located inside the support rod 1023 or at the other end of the support rod 1023 not connected to the base 103. The slider 1022 is provided on the support rod 1023. The slider 1022 can be set by means of socketing, splicing, etc., and the slider 1022 can reciprocate along the axis of the support rod 1023. The positions of the movable part 1021 and the slider 1022 are relatively fixed. When a user uses the multimedia device 100, a force can be applied to the display module 101 or the movable part 1021 along the axial direction of the support rod 1023, so that the slider 1022 slides on the support rod 1023, thereby causing the display module 101 and the movable part 1021 to move along the axial direction of the support rod 1023, thereby changing the position of the display module 101.

[0033] In this embodiment of the application, by setting the movable part 1021 and the slider 1022, the user can raise and lower the display module 101 according to actual needs, so as to adjust the vertical position of the display module 101 relative to the base 103, thereby improving the user experience.

[0034] Figure 6 This is a schematic diagram of a multimedia device including an audio cable according to an embodiment of this application, as shown below. Figure 6 As shown, the multimedia device 100 also includes: an audio cable 107 and a first spring wire 108; the first end of the audio cable 107 is connected to the display module 101; the first end of the first spring wire 108 is connected to the second end of the audio cable 107, and the second end of the first spring wire 108 is connected to the low-frequency sound unit 106; the first spring wire 108 is wound around the support rod 1023, the first end of the first spring wire 108 is fixed relative to the slider 1022, and the second end of the first spring wire 108 is fixed relative to the support rod 1023; when the slider 1022 moves away from the base 103, the first spring wire 108 extends; when the slider 1022 moves closer to the base 103, the first spring wire 108 shortens.

[0035] The display module 101 can communicate with the low-frequency sound unit 106 through the audio line 107 and the first spring line 108, and in use, if the user moves the display module 101, such as moving the display module 101 towards the base 103, at this time the slider 1022 is also driven to move towards the base 103, and then the first spring line 108 wound on the support rod 1023 is shortened, and similarly, if the display module 101 is moved away from the base 103, the first spring line 108 is elongated.

[0036] In the embodiment of the present application, one end of the audio line 107 is connected with the display module 101, the other end of the audio line 107 is connected with one end of the first spring line 108, the other end of the first spring line 108 is connected with the low-frequency sound unit 106, and the first spring line 108 is wound on the support rod 1023, when the slider 1022 slides on the support rod 1023 away from the base 103, the first spring line 108 is elongated, and when the slider 1022 slides on the support rod 1023 towards the base 103, the first spring line 108 is shortened, under the premise of ensuring the normal communication between the display module 101 and the low-frequency sound unit 106, the display module 101 can be lifted, and the safety of the communication between the display module 101 and the low-frequency sound unit 106 is ensured.

[0037] In a possible implementation manner, the multimedia device 100 further comprises a second spring line 109, a first end of the second spring line 109 is connected with a second end of the audio line 107, and a second end of the second spring line 109 is connected with the medium-frequency sound unit 104; the second spring line 109 is wound on the support rod 1023, the first end of the second spring line 109 is fixed relative to the slider 1022, the second end of the second spring line 109 is fixed relative to the support rod 1023, the second spring line 109 is shortened when the slider 1022 moves away from the base 103, and the second spring line 109 is elongated when the slider 1022 moves towards the base 103.

[0038] The medium-frequency sound unit 104 can be connected with the audio line 107 through the second spring line 109, and in the user moves the display module 101, such as moving the display module 101 towards the base 103, at this time the slider 1022 is also driven to move towards the base 103, and then the second spring line 109 wound on the support rod 1023 is elongated, and similarly, if the display module 101 is moved away from the base 103, the second spring line 109 is shortened.

[0039] In the embodiment of the present application, one end of the second spring wire 109 is connected with the audio wire 107, the other end of the second spring wire 109 is connected with the mid-frequency sound unit 104, and the second spring wire 109 is wound on the support rod 1023. When the sliding block 1022 slides on the support rod 1023 in a direction away from the base 103, the second spring wire 109 shortens, and when the sliding block 1022 slides on the support rod 1023 in a direction close to the base 103, the second spring wire 109 lengthens. On the premise of ensuring normal communication between the display module 101 and the mid-frequency sound unit 104, the display module 101 can be lifted, thereby ensuring the safety of communication between the display module 101 and the mid-frequency sound unit 104.

[0040] Figure 7 is a schematic view of a multimedia device including a U-shaped signal transmission wire according to an embodiment of the present application, as shown in Figure 7 The multimedia device further includes a U-shaped signal transmission wire 110.

[0041] The first end of the U-shaped signal transmission wire 110 is connected with the second end of the audio wire 107, and the second end of the U-shaped signal transmission wire 110 is connected with the mid-frequency sound unit 104. The first end of the U-shaped signal transmission wire 110 is fixed relative to the sliding block 1022, and the second end of the U-shaped signal transmission wire 110 is fixed relative to the support rod 1023. When the sliding block 1022 moves in a direction away from the base 103, the bending point of the U-shaped signal transmission wire 110 moves in a direction away from the base 103, and when the sliding block 1022 moves in a direction close to the base 103, the bending point of the U-shaped signal transmission wire 110 moves in a direction close to the base 103.

[0042] The mid-frequency sound unit 104 can also be connected with the audio wire 107 through the U-shaped signal transmission wire 110. The first end of the U-shaped signal transmission wire 110 is fixed relative to the sliding block 1022, and the second end of the U-shaped signal transmission wire 110 is fixed relative to the support rod 1023. When the user moves the display module 101, for example, in a direction close to the base 103, the sliding block 1022 is simultaneously driven to move in a direction close to the base 103, thereby driving the first end of the U-shaped signal transmission wire 110 to move in a direction close to the base 103. Similarly, when the user moves the display module 101 in a direction away from the base 103, the first end of the U-shaped signal transmission wire 110 moves in a direction away from the base 103.

[0043] In the embodiment of the present application, the U-shaped signal transmission line 110 is arranged, and the first end of the U-shaped signal transmission line 110 is fixed relative to the sliding block 1022, and the second end of the U-shaped signal transmission line 110 is fixed relative to the supporting rod 1023, so that the sliding block 1022 can slide on the supporting rod 1023 without damaging the line, and the line is not deformed too much, and the safety of the communication between the display module 101 and the intermediate frequency sound unit 104 is further improved.

[0044] Figure 8 FIG. 1 is a schematic diagram of a display module according to an embodiment of the present application. Figure 8 As shown in FIG. 1, the display module 101 includes a rear shell 1012, a display screen 1011 embedded in the rear shell 1012, and the back of the display screen 1011 opposite to the rear shell 1012, a high-frequency sound unit 105 arranged between the display screen 1011 and the rear shell 1012, and a first sound outlet 10121 arranged on the rear shell 1012 opposite to the high-frequency sound unit 105, the axis direction of the first sound outlet 10121 parallel to the display screen 1011, and the sound emission direction of the high-frequency sound unit 105 parallel to the axis direction of the first sound outlet 10121.

[0045] In order to fix the position of the high-frequency sound unit 105 inside the display module 101, the high-frequency sound unit 105 can be arranged between the display screen 1011 and the rear shell 1012 included in the display module 101, and the first sound outlet 10121 can be arranged on the rear shell 1012 opposite to the high-frequency sound unit 105 to guide the audio played by the high-frequency sound unit 105, so that the sound emission direction of the high-frequency sound unit 105 is parallel to the axis direction of the first sound outlet 10121. It should be noted that the axis direction of the first sound outlet 10121 is parallel to the display screen 1011 included in the display module 101.

[0046] In the embodiment of the present application, since the display module 101 includes the display screen 1011 and the rear shell 1012, and the display screen 1011 is embedded in the rear shell 1012, a fixed space is formed between the display screen 1011 and the rear shell 1012, and the high-frequency sound unit 105 can be arranged in the space formed between the display screen 1011 and the rear shell 1012, so that the high-frequency sound unit 105 cannot be seen on the appearance of the display module 101, and the aesthetic appearance is improved.

[0047] In a possible implementation manner, the multimedia device 100 includes a plurality of high-frequency sound units 105, and the plurality of high-frequency sound units 105 are arranged inside the two opposite side edges of the rear shell 1012.

[0048] In order to improve the sound intensity of the high-frequency sound range, a plurality of high-frequency sound units 105 can be arranged inside the two opposite sides of the back shell 1012, for example, four high-frequency sound units 105 can be arranged. In order to further improve the symmetry, the number of high-frequency sound units 105 arranged inside the two sides can be the same.

[0049] In the embodiment of the present application, by arranging a plurality of high-frequency sound units 105 inside the two opposite sides of the back shell 1012, the sound intensity of the high-frequency sound range can be improved.

[0050] In a possible implementation manner, the display module 101 further includes a hidden front shell 1013, the hidden front shell 1013 is connected with the back shell 1012, the display screen 1011 abuts against the hidden front shell 1013, and the hidden front shell 1013 is located between the display screen 1011 and the back shell 1012; the hidden front shell 1013 includes a limiting portion 10131 extending in a direction perpendicular to the display screen 1011, and in a direction parallel to the display screen 1011, the high-frequency sound unit 105 is located between the limiting portion 10131 and the back shell 1012.

[0051] The hidden front shell 1013 can also be arranged inside the display module 101, and the high-frequency sound unit 105 is limited by the hidden front shell 1013. Specifically, the hidden front shell 1013 includes a limiting portion 10131 extending in a direction perpendicular to the display screen 1011, and by the limiting portion 10131, the high-frequency sound unit 105 can be limited in the space between the limiting portion 10131 and the back shell 1012.

[0052] In the embodiment of the present application, by arranging the limiting portion 10131 in the display module 101, the position of the high-frequency sound unit 105 inside the display module 101 can be further limited, the structural strength is strengthened, and the stability of the high-frequency sound unit 105 inside the display module 101 is improved.

[0053] In a possible implementation manner, in a direction parallel to the display screen 1011, the part of the back shell 1012 opposite to the limiting portion 10131 is in an arc structure.

[0054] In the embodiment of the present application, by arranging the part of the back shell 1012 opposite to the limiting portion 10131 in an arc structure in a direction parallel to the display screen 1011, the volume of the back shell 1012 can be reduced, and the appearance of the back shell 1012 can be improved.

[0055] Figure 9 is a schematic view of a base of an embodiment of the present application, like Figure 9As shown, the second sound outlet hole 1031 is arranged on the front and / or side of the base 103; the sound emitting direction of the low-frequency sound emitting unit 106 is parallel to the axis direction of the second sound outlet hole 1031.

[0056] In the embodiment of the present application, by arranging the second sound outlet hole 1031 on the front and / or side of the base 103, when the low-frequency sound emitting unit 106 emits sound, the sound channel is emitted through the second sound outlet hole 1031, and the sound emitting direction is parallel to the axis direction of the second sound outlet hole 1031, which can improve the directivity of the sound emitted by the low-frequency sound emitting unit 106, and further improve the experience of the user.

[0057] It should be noted that, according to the needs of implementation, each component / step described in the embodiment of the present application can be split into more components / steps, or two or more components / steps or part of the operation of the components / steps can be combined into a new component / step, to achieve the purpose of the embodiment of the present application.

[0058] It should be noted that the information related to the user (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to sample data for training the model, data for analysis, stored data, displayed data, etc.) involved in the embodiments of the present disclosure are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of relevant countries and regions, and provide corresponding operation portal for user to choose authorization or refusal.

[0059] It should be understood that each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other, and the different places of the embodiments are mainly described. Especially for the method embodiment, since it is basically similar to the method described in the device and system embodiment, it is described more simply, and the related parts refer to the part of the description of other embodiments.

[0060] It should be understood that the above describes specific embodiments of the present specification. Other embodiments are within the scope of the claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multi-task processing and parallel processing are possible or can be advantageous.

[0061] It should be understood that the use of a singular form to describe an element or to show only one element in the accompanying drawings does not imply that the number of such element is limited to one. Furthermore, modules or elements described or shown as separate herein may be combined into a single module or element, and modules or elements described or shown as single herein may be broken down into multiple modules or elements.

[0062] It should also be understood that the terminology and expressions used herein are for descriptive purposes only, and one or more embodiments described herein should not be limited to these terms and expressions. The use of these terms and expressions does not exclude any illustrative and descriptive equivalent features (or parts thereof), and it should be recognized that various modifications that may exist should also be included within the scope of the claims. Other modifications, variations, and substitutions may also exist. Accordingly, the claims should be considered to cover all such equivalents.

Claims

1. A multimedia device comprising: A display module, a support rod, a base, a mid-frequency sound unit and a high-frequency sound unit; One end of the support rod is connected with the base, and the display module is connected with the support rod; The mid-frequency sound unit is arranged on the support rod, and the high-frequency sound unit is arranged on the display module; The sound emission direction of the high-frequency sound unit is parallel to the display screen included in the display module; The angle between the sound emission direction of the mid-frequency sound unit and the normal line of the front surface of the display screen is less than or equal to 90 degrees; The multimedia device further comprises a low-frequency sound unit; The low-frequency sound unit is arranged inside the base, and the angle between the sound emission direction of the low-frequency sound unit and the normal line of the front surface of the base is less than or equal to 90 degrees, wherein the front surface of the base is connected with the support rod; The support rod comprises a movable part, a sliding block and a support rod; One end of the support rod is connected with the base, one end of the movable part is connected with the display module, the other end of the movable part is connected with the sliding block, and the sliding block is arranged on the support rod; The sliding block is used to drive the movable part and the display module to move along the axis direction of the support rod when sliding along the support rod; The multimedia device further comprises an audio line and a first spring line; The first end of the audio line is connected with the display module; The first end of the first spring line is connected with the second end of the audio line, and the second end of the first spring line is connected with the low-frequency sound unit; The first spring line is wound on the support rod, the first end of the first spring line is fixed relative to the sliding block, the second end of the first spring line is fixed relative to the support rod, the first spring line is elongated when the sliding block moves away from the base, and the first spring line is shortened when the sliding block moves towards the base.

2. The multimedia device of claim 1, wherein, The multimedia device further comprises a second spring line; The first end of the second spring line is connected with the second end of the audio line, and the second end of the second spring line is connected with the mid-frequency sound unit; The second spring line is wound on the support rod, the first end of the second spring line is fixed relative to the sliding block, the second end of the second spring line is fixed relative to the support rod, the second spring line is shortened when the sliding block moves away from the base, and the second spring line is elongated when the sliding block moves towards the base.

3. The multimedia device of claim 1, wherein, The multimedia device further comprises a U-shaped signal transmission line; The first end of the U-shaped signal transmission line is connected with the second end of the audio line, and the second end of the U-shaped signal transmission line is connected with the mid-frequency sound unit; The first end of the U-shaped signal transmission line is fixed relative to the sliding block, the second end of the U-shaped signal transmission line is fixed relative to the support rod, the bending point of the U-shaped signal transmission line moves away from the base when the sliding block moves away from the base, and the bending point of the U-shaped signal transmission line moves towards the base when the sliding block moves towards the base.

4. The multimedia device of claim 1, the display module comprising: A rear shell; The display screen is embedded in the rear shell, and the back surface of the display screen is opposite to the rear shell; The high-frequency sound unit is arranged between the display screen and the rear shell; The rear shell is provided with a first sound outlet hole opposite to the high-frequency sound unit, and an axis direction of the first sound outlet hole is parallel to the display screen, and a sound outlet direction of the high-frequency sound unit is parallel to the axis direction of the first sound outlet hole.

5. The multimedia device of claim 4, the display module further comprising: The hidden front shell; The hidden front shell is connected with the rear shell, the display screen abuts against the hidden front shell, and the hidden front shell is located between the display screen and the rear shell; The hidden front shell comprises a limiting part extending in a direction perpendicular to the display screen, and in a direction parallel to the display screen, the high-frequency sound unit is located between the limiting part and the rear shell.

6. The multimedia device of claim 5, wherein, In the direction parallel to the display screen, a part of the rear shell opposite to the limiting part is in an arc structure.

7. The multimedia device of claim 4, wherein, The multimedia device comprises a plurality of high-frequency sound units arranged inside two opposite sides of the rear shell.

8. The multimedia device of claim 1, wherein, The second sound outlet hole is arranged on a front surface and / or a side surface of the base; A sound outlet direction of the low-frequency sound unit is parallel to an axis direction of the second sound outlet hole.

9. The multimedia device of claim 1, wherein, The medium-frequency sound unit is connected with the other end of the supporting rod, or the medium-frequency sound unit is connected between the two ends of the supporting rod.

10. The multimedia device of any of claims 1-9, wherein, The display screen is a touch screen.

Images