Large-screen equipment

Abstract

The utility model discloses a large screen device, which comprises loudspeaking mechanisms, a device frame body and a driving mechanism, and is characterized in that the device frame body at least comprises two first frame bodies which are oppositely arranged in the vertical direction, and the two first frame bodies are respectively provided with the loudspeaking mechanisms; the output end of the driving mechanism is connected to the loudspeaking mechanisms arranged on the two first frame bodies, and the driving mechanism is at least used for adjusting the relative included angle between the loudspeaking mechanisms and the first frame bodies on the vertical plane. According to the scheme, on one hand, the loudspeaking mechanism is arranged on the first frame body, and compared with a frame body which is oppositely arranged in the horizontal direction, sound attenuation caused by shielding of an upper platform and the like in the lower direction or shielding of an upper wall and the like in the upper direction can be reduced as much as possible; and on the other hand, the loudspeaking mechanism can adjust the relative included angle between the loudspeaking mechanism and the first frame body at least on the vertical surface under the driving of the driving mechanism, so that the sound transmission has directivity as far as possible. Therefore, the sound quality of the large-screen equipment can be improved as much as possible.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic products, in particular to a large-screen device. BACKGROUND

[0002] The large-screen device generally integrates a loudspeaker mechanism, a camera mechanism, a sound pickup mechanism, etc. to support intelligent and convenient functions in various scenarios such as conferences and teaching.

[0003] According to the research of the present inventor, the existing large-screen device generally has the technical defect that it is difficult to guarantee sound quality, which leads to difficulty in hearing clearly in some areas (such as the back row, etc.). Therefore, how to improve the sound quality of the large-screen device as much as possible has become a problem to be solved. CONTENT OF THE UTILITY MODEL

[0004] The technical problem solved by the present application is to provide a large-screen device that can improve the sound quality of the large-screen device as much as possible.

[0005] In order to solve the above technical problem, the present application provides a large-screen device in the first aspect, comprising: a loudspeaker mechanism, a device frame body, and a driving mechanism, the device frame body at least includes two first frame bodies arranged opposite in the vertical direction, and the two first frame bodies are respectively provided with the loudspeaker mechanism; the output end of the driving mechanism is connected to the loudspeaker mechanism arranged separately in the two first frame bodies, and the driving mechanism is at least used for adjusting the relative angle between the loudspeaker mechanism and the first frame body in the vertical plane.

[0006] Therefore, the large-screen device includes a loudspeaker mechanism, a device frame body, and a driving mechanism, the device frame body at least includes two first frame bodies arranged opposite in the vertical direction, and the two first frame bodies are respectively provided with the loudspeaker mechanism, the output end of the driving mechanism is connected to the loudspeaker mechanism arranged separately in the two first frame bodies, and the driving mechanism is at least used for adjusting the relative angle between the loudspeaker mechanism and the first frame body in the vertical plane, so that on the one hand the loudspeaker mechanism is arranged in the first frame body arranged opposite in the vertical direction, which can reduce the sound attenuation caused by the obstruction of the podium in the lower direction or the obstruction of the wall in the upper direction as much as possible compared with the loudspeaker mechanism arranged in the frame body arranged opposite in the horizontal direction, and on the other hand the loudspeaker mechanism can adjust the relative angle with the first frame body at least in the vertical plane under the driving of the driving mechanism, so that the sound propagation can be made more directional by adjusting the relative angle. Therefore, the sound quality of the large-screen device can be improved as much as possible.

[0007] Among them, the loudspeaker mechanism is a sound column, and the first frame body is provided with a sound column slot position matched with the sound column.

[0008] Therefore, the loudspeaker mechanism is arranged as a sound column, the first frame body is provided with a sound column slot matching the sound column, so that on the one hand, the overall appearance of the large-screen device can be maintained as much as possible, and on the other hand, the sound column can be placed in the sound column slot when in the storage state, so as to avoid damage caused by knocking and the like when the loudspeaker mechanism protrudes and hangs on the device frame body.

[0009] The device frame body further comprises two second frame bodies arranged opposite in the horizontal direction, and the sound column slot penetrates at least one second frame body or an extension of at least one second frame body in the horizontal direction.

[0010] Therefore, the sound column slot penetrates at least one second frame body or an extension of at least one second frame body in the horizontal direction, so that interference caused by the second frame body during adjustment of the sound column can be reduced as much as possible.

[0011] The sound column slot penetrates the second frame body located above or an extension of the second frame body located above in the horizontal direction.

[0012] Therefore, the sound column slot penetrates the second frame body located above or an extension of the second frame body located above in the horizontal direction, so that the sound column can be hung above the large-screen device as much as possible, and damage caused by being easily touched by non-professionals can be avoided as much as possible.

[0013] The sound column slot penetrates the two second frame bodies or extensions of the two second frame bodies in the horizontal direction.

[0014] Therefore, the sound column slot penetrates the two second frame bodies or extensions of the two second frame bodies in the horizontal direction, so that dust can be reduced as much as possible at the contact position of the second frame body and the first frame body, and the difficulty of device maintenance can be reduced.

[0015] When the sound column is in the storage state, the sound column is flush with the remaining part of the first frame body which is not provided with the sound column slot.

[0016] Therefore, when the sound column is in the storage state, the sound column is flush with the remaining part of the first frame body which is not provided with the sound column slot, so that the overall appearance of the large-screen device can be improved as much as possible.

[0017] The sound column is a square column, and the sound column slot is a square column.

[0018] Therefore, the sound column is a square column, and the sound column slot is a square column, so that the difficulty of slotting can be reduced as much as possible.

[0019] The large-screen device comprises a hand-adjusting mechanism connected to the input end of the driving mechanism, and the hand-adjusting mechanism is used for manual operation to drive the driving mechanism under manual power and adjust the relative angle of the loudspeaker mechanism.

[0020] Therefore, by arranging the hand-adjusting mechanism connected to the input end of the driving mechanism, the relative angle of the loudspeaker mechanism can be driven and adjusted under manual power.

[0021] The driving mechanism comprises a driving circuit, a power element and a transmission element, the driving circuit is electrically connected to the input end of the power element, the output end of the power element is connected to the input end of the transmission element, and the output end of the transmission element is connected to the loudspeaker mechanism; wherein, the driving mechanism is used to start the power element to provide power for the transmission element to adjust the relative angle under the triggering of a first signal representing the start of adjustment; or, the driving mechanism is used to close the power element to stop providing power for the transmission element to fix the relative angle under the triggering of a second signal representing the stop of adjustment.

[0022] Therefore, by arranging the driving mechanism comprising a driving circuit, a power element and a transmission element, the driving circuit is electrically connected to the input end of the power element, the output end of the power element is connected to the input end of the transmission element, and the output end of the transmission element is connected to the loudspeaker mechanism, the relative angle of the loudspeaker mechanism can be driven and adjusted under electric power.

[0023] The two first frames are respectively provided with one loudspeaker mechanism; or, at least one first frame is provided with a plurality of loudspeaker mechanisms, and the plurality of loudspeaker mechanisms on the same first frame are arranged in at least one direction of the vertical direction and the horizontal direction.

[0024] Therefore, the two first frames are respectively provided with one loudspeaker mechanism, which can reduce the complexity of the arrangement of the loudspeaker mechanism as much as possible. Or, at least one first frame is provided with a plurality of loudspeaker mechanisms, and the plurality of loudspeaker mechanisms on the same first frame are arranged in at least one direction of the vertical direction and the horizontal direction, which can support the angle adjustment of the loudspeaker mechanism at different heights as much as possible. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of an embodiment of the large-screen device of the present application;

[0026] Figure 2 is a structural schematic diagram of another embodiment of the large-screen device of the present application;

[0027] Figure 3 is a structural schematic diagram of still another embodiment of the large-screen device of the present application;

[0028] Figure 4 is a structural schematic diagram of still another embodiment of the large-screen device of the present application;

[0029] Figure 5 is a schematic diagram of a loudspeaker effect of an embodiment when the loudspeaker mechanism is arranged only at the bottom;

[0030] Figure 6 is a schematic diagram of a loudspeaker effect of an embodiment when the loudspeaker mechanism is arranged only at the top;

[0031] Figure 7 is a schematic diagram of a loudspeaker effect of an embodiment when the loudspeaker mechanism is arranged at the side. DETAILED DESCRIPTION

[0032] The scheme of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0033] In the following description, for the purpose of explanation and not limitation, specific details are set forth, such as particular system configurations, interfaces, techniques, in order to provide a thorough understanding of the present application.

[0034] The terms "system" and "network" are often used interchangeably herein. The term "and / or" herein is merely used to represent an associated relationship between associated objects, and means that there can be three relationships, for example, A and / or B, which means that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects. In addition, "multiple" herein means two or more than two.

[0035] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 is a structural schematic diagram of an embodiment of the large-screen device of the present application, Figure 2 is a structural schematic diagram of another embodiment of the large-screen device of the present application, Figure 3 is a structural schematic diagram of still another embodiment of the large-screen device of the present application, Figure 4 is a structural schematic diagram of still another embodiment of the large-screen device of the present application. Specifically, Figure 1 is a schematic diagram of an embodiment of the large-screen device of the present application in a front view angle, Figure 2 is a schematic diagram of an embodiment of the large-screen device of the present application in a side view angle when the loudspeaker mechanism is in a storage state, Figure 3 is a schematic diagram of an embodiment of the large-screen device of the present application in a side view angle when the loudspeaker mechanism is in an open state, Figure 4Fig. 1 is a schematic diagram of an embodiment of a loudspeaker mechanism when the loudspeaker mechanism is arranged as a sound column. The large-screen device 10 comprises a loudspeaker mechanism 11, a device frame 12, and a driving mechanism (not shown). The device frame 12 comprises two first frames 121 arranged opposite to each other in a vertical direction, and each of the two first frames 121 is provided with the loudspeaker mechanism 11. An output end of the driving mechanism is connected to the loudspeaker mechanisms 11 arranged in the two first frames 121, and the driving mechanism is used to adjust an included angle θ between the loudspeaker mechanism 11 and the first frame 121 in a vertical plane. It should be noted that the vertical plane is relative to a horizontal plane, and a specific included angle between the vertical plane and a screen (not shown) of the large-screen device is not limited herein. For example, the specific included angle between the vertical plane and the screen (not shown) of the large-screen device can include, but is not limited to, 90 degrees, 60 degrees, etc. In addition, as a possible example, the driving mechanism can also be used to adjust the included angle θ between the loudspeaker mechanism 11 and the first frame 121 in a horizontal plane.

[0036] In an embodiment, the device frame 12 further comprises two second frames 122 arranged opposite to each other in a horizontal direction. For example, in addition to the loudspeaker mechanism 11 arranged on the first frame 121, at least one of the second frames 122 can also be provided with the loudspeaker mechanism 11. For example, the loudspeaker mechanism 11 can be arranged on the upper second frame 122, or the loudspeaker mechanism 11 can be arranged on the lower second frame 122.

[0037] In an embodiment, the large-screen device 10 can comprise a hand-operated mechanism (not shown) connected to an input end of the driving mechanism, and the hand-operated mechanism is used for manual operation to drive and adjust the included angle θ of the loudspeaker mechanism 11 under manual power. In the above manner, by arranging the hand-operated mechanism connected to the input end of the driving mechanism, the included angle θ of the loudspeaker mechanism 11 can be driven and adjusted under manual power.

[0038] In a specific embodiment, the hand-operated mechanism can include, but is not limited to, a knob, a button, etc., and the specific type of the hand-operated mechanism is not limited herein.

[0039] In a specific embodiment, when the hand-operated mechanism is used to adjust the included angle θ of the loudspeaker mechanism 11, the driving mechanism can include, but is not limited to, mechanical elements such as gears meshing with each other, cylinders, etc., and the specific mechanism of the driving mechanism is not limited herein. In addition, the transmission process of the driving mechanism can refer to related details of mechanical transmission, which will not be described herein again.

[0040] In another implementation scenario, different from the foregoing implementation, the driving mechanism can also include a driving circuit (not shown), a power element (not shown), and a transmission element (not shown). As a possible example, the driving circuit can include but is not limited to a single-chip microcomputer circuit board, etc., the power element can include but is not limited to a motor, etc., and the transmission element can include but is not limited to a plurality of mechanical elements such as gears and cylinders that mesh with each other. In addition, the driving circuit can be electrically connected to the input end of the power element, the output end of the power element can be connected to the input end of the transmission element, and the output end of the transmission element can be connected to the loudspeaker mechanism 11. That is, the output end of the transmission element, as the output end of the driving mechanism, is connected to the loudspeaker mechanism 11. It should be noted that the driving mechanism is used to start the power element to provide power to the transmission element to adjust the relative included angle θ under the triggering of a first signal (such as a digital signal "11") representing the start of adjustment; or, the driving mechanism is used to stop the power element from providing power to the transmission element to fix the relative included angle θ under the triggering of a second signal (such as a digital signal "00") representing the stop of adjustment. In the above manner, by providing that the driving mechanism includes the driving circuit, the power element, and the transmission element, the driving circuit is electrically connected to the input end of the power element, the output end of the power element is connected to the input end of the transmission element, and the output end of the transmission element is connected to the loudspeaker mechanism 11, so that the relative angle θ of the loudspeaker mechanism 11 can be adjusted by electric power driving.

[0041] In one implementation scenario, the two first frame bodies 121 can be respectively provided with one loudspeaker mechanism 11. For example, one loudspeaker mechanism 11 can be arranged above the two first frame bodies 121 respectively; or one loudspeaker mechanism 11 can be arranged below the two first frame bodies 121 respectively; or one loudspeaker mechanism 11 can be arranged above one first frame body 121, and one loudspeaker mechanism 11 can be arranged below the other first frame body 121. It should be noted that the above examples are only a few possible examples in actual application, and the specific manner of arranging the loudspeaker mechanism 11 on the first frame body 121 is not limited herein. In the above manner, the two first frame bodies 121 are respectively provided with one loudspeaker mechanism 11, which can reduce the complexity of arranging the loudspeaker mechanism 11 as much as possible.

[0042] In another implementation scenario, different from the foregoing implementation, as another possible implementation, the at least one first frame 121 can be provided with a plurality of loudspeaking mechanisms 11, and the plurality of loudspeaking mechanisms 11 on the same first frame 121 can be arranged in at least one of a vertical direction and a horizontal direction. Exemplarily, two first frames 121 can each be provided with two loudspeaking mechanisms 11, and the two loudspeaking mechanisms 11 on the first frame 121 can be arranged in a vertical direction (i.e., stacked in an up-down manner) or arranged in a horizontal direction (i.e., arranged side by side in a left-right manner). Alternatively, one of the first frames 121 can be provided with one loudspeaking mechanism 11, and the other first frame 121 can be provided with two loudspeaking mechanisms 11, and the two loudspeaking mechanisms 11 on the first frame 121 can be arranged in a vertical direction (i.e., stacked in an up-down manner) or arranged in a horizontal direction (i.e., arranged side by side in a left-right manner). It should be noted that the foregoing examples are only a few possible examples in actual application, and the specific manner of arranging the loudspeaking mechanism 11 on the first frame 121 is not limited herein. In the foregoing manner, the at least one first frame 121 is provided with a plurality of loudspeaking mechanisms 11, and the plurality of loudspeaking mechanisms 11 on the same first frame 121 are arranged in at least one of a vertical direction and a horizontal direction, which can as much as possible support the angle adjustment of the loudspeaking mechanism 11 at different heights.

[0043] In one implementation scenario, the large-screen device 10 can further include a lifting mechanism (not shown), and the lifting mechanism can carry the driving mechanism, so that the loudspeaking mechanism 11 can be adjusted in relative height (not shown) under the driving of the lifting mechanism on the one hand and adjusted in relative angle θ under the driving of the driving mechanism on the other hand. It should be noted that the lifting mechanism can also be arranged on the first frame 121. The lifting mechanism can include but is not limited to mechanical elements such as motors, belts, air cylinders, and tracks, and the specific structure of the lifting mechanism is not limited herein.

[0044] In one implementation scenario, as a special example, the loudspeaking mechanism 11 can be a loudspeaker column 11', and the first frame 121 can be provided with a sound column slot C matching the loudspeaker column 11'. In the foregoing manner, the loudspeaking mechanism 11 is arranged as the loudspeaker column 11', and the first frame 121 is provided with the sound column slot C matching the loudspeaker column 11', so that on the one hand the overall aesthetics of the large-screen device 10 can be as much as possible maintained, and on the other hand the loudspeaker column 11' can be placed in the sound column slot C when in a storage state, so as to as much as possible avoid damage caused by knocking and the like when the loudspeaking mechanism 11 protrudes and hangs on the device frame 12. It should be noted that the loudspeaker column 11' is only one possible arrangement of the loudspeaking mechanism 11, and the arrangement of the loudspeaking mechanism 11 is not limited herein. For example, the loudspeaking mechanism 11 can also protrude and hang on the first frame 121.

[0045] In a specific implementation scenario, as mentioned above, the device frame 12 further comprises two second frames 122 arranged opposite to each other in the horizontal direction, and the sound column slot C passes through at least one second frame 122 or the extension of at least one second frame 122 in the horizontal direction. It should be noted that when the end (not shown) of the second frame 122 is above or below the end (not shown) of the first frame 121, the sound column slot C can pass through at least one second frame 122, such as the second frame 122 above; or when the end (not shown) of the second frame 122 is on the left or right side of the end (not shown) of the first frame 121, the sound column slot C can pass through the extension of at least one second frame 122 in the horizontal direction. In the above manner, the sound column slot C passes through at least one second frame 122 or the extension of at least one second frame 122 in the horizontal direction, which can minimize the interference of the second frame 122 during the adjustment of the loudspeaker 11'. As a possible example, the sound column slot C can pass through the second frame 122 above or the extension of the second frame 122 above in the horizontal direction, which can enable the loudspeaker 11' to be suspended above the large-screen device 10 as much as possible, thereby avoiding damage due to easy touching by non-professionals. As another possible example, the sound column slot C can pass through two second frames 122 or the extension of two second frames 122 in the horizontal direction, which can minimize the dust accumulation at the contact position of the second frame 122 and the first frame 121 and reduce the difficulty of device maintenance.

[0046] In a specific implementation scenario, the loudspeaker 11' is flush with the remaining part of the first frame 121 which is not provided with the sound column slot when the loudspeaker 11' is in the storage state, which can maximize the overall aesthetics of the large-screen device 10.

[0047] In a specific implementation scenario, as a special example, the loudspeaker 11' can be a square column, and accordingly, the sound column slot C can be a square column, which can minimize the difficulty of slotting. Of course, in actual application, the loudspeaker 11' can also be provided in other shapes, and the specific shape of the loudspeaker 11' is not limited herein.

[0048] In an implementation scenario, please refer to Figure 5 , Figure 6 and Figure 7 , Figure 5 is a schematic view of a loudspeaker effect embodiment when the loudspeaker mechanism 11 is only provided at the bottom, Figure 6 is a schematic view of a loudspeaker effect embodiment when the loudspeaker mechanism 11 is only provided at the top, Figure 7is a schematic diagram of an embodiment of loudspeaker effect when the loudspeaker mechanism 11 is arranged at the side. As shown, in the case of a classroom scenario, when the loudspeaker mechanism 11 is arranged only at the bottom, some areas will be attenuated due to the obstruction of objects such as a podium. As shown, Figure 5 , in the case of a classroom scenario, when the loudspeaker mechanism 11 is arranged only at the top, the sound transmission will be reflected by the wall, thus causing the sound to be attenuated in the back row. As shown, Figure 6 , in the case of a classroom scenario, when the loudspeaker mechanism 11 is arranged only at the top, the sound transmission will be reflected by the wall, thus causing the sound to be attenuated in the back row. As shown, Figure 7 , in the case of a classroom scenario, when the loudspeaker mechanism 11 is arranged only at the top, the sound transmission will be reflected by the wall, thus causing the sound to be attenuated in the back row. As shown, Figure 5 , Figure 6 and Figure 7 are only schematic diagrams of the sound propagation effect when the loudspeaker mechanism 11 is arranged in three different ways respectively, and do not limit the arrangement of the loudspeaker mechanism 11 in the large-screen device 10 of the present application. The arrangement of the loudspeaker mechanism 11 can be specifically referred to the foregoing related description, which will not be described here.

[0049] The above scheme, the large-screen device 10 comprises: a loudspeaker mechanism 11, a device frame 12, and a driving mechanism (not shown), the device frame 12 comprises at least two first frames 121 arranged oppositely in the vertical direction, and each of the two first frames 121 is provided with a loudspeaker mechanism 11; the output end of the driving mechanism is connected to the loudspeaker mechanisms 11 arranged separately on the two first frames 121, and the driving mechanism is at least used for adjusting the relative angle between the loudspeaker mechanism 11 and the first frame 121 in the vertical plane. On the one hand, the loudspeaker mechanism 11 is arranged on the first frame 121 arranged oppositely in the vertical direction, which can reduce the sound attenuation caused by the obstruction of objects such as a podium in the downward direction or the obstruction of walls in the upward direction as much as possible, and on the other hand, the loudspeaker mechanism 11 can adjust the relative angle with the first frame 121 at least in the vertical plane under the driving of the driving mechanism, so that the sound propagation can be made more directional by adjusting the relative angle. Therefore, the sound quality of the large-screen device 10 can be improved as much as possible.

[0050] The above description of each embodiment tends to emphasize the differences between each embodiment, and the same or similar parts can be referred to each other, which will not be described here for the sake of brevity.

[0051] In several embodiments provided in the present application, it should be understood that the disclosed method and device can be implemented in other manners. For example, the described device embodiment is merely illustrative, and the division of the modules or units can be different, for example, multiple modules or units can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0052] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, can be located in one place, or can be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the present embodiment.

[0053] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically, or two or more units can be integrated into one unit. The integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

Claims

1. A large screen device, characterized by, The loudspeaker mechanism comprises: a device frame, which comprises two first frames arranged opposite to each other in the vertical direction, and each of the two first frames is provided with the loudspeaker mechanism; a driving mechanism, the output end of which is connected to the loudspeaker mechanism arranged separately on the two first frames, and the driving mechanism is used to adjust the relative angle between the loudspeaker mechanism and the first frame in the vertical plane. The loudspeaker mechanism is a sound column, and the first frame is provided with a sound column slot matching the sound column.

2. The large-screen device according to claim 1, characterized by, The device frame further comprises two second frames arranged opposite to each other in the horizontal direction, and the sound column slot penetrates at least one of the second frames or the extension of at least one of the second frames in the horizontal direction.

3. The large-screen device according to claim 2, characterized by, The sound column slot penetrates the upper second frame or the extension of the upper second frame in the horizontal direction.

4. The large-screen apparatus according to claim 3, characterized by, The sound column slot penetrates the two second frames or the extension of the two second frames in the horizontal direction.

5. The large-screen apparatus according to claim 3, wherein The sound column is flush with the remaining part of the first frame which is not provided with the sound column slot when the sound column is in the storage state.

6. The large-screen apparatus according to claim 2, wherein The sound column is a square column, and the sound column slot is a square column.

7. The large-screen apparatus according to claim 2, wherein The large-screen device comprises a hand-operated mechanism connected to the input end of the driving mechanism, and the hand-operated mechanism is used for manual operation to drive the driving mechanism to adjust the relative angle of the loudspeaker mechanism under manual power.

8. The large-screen apparatus according to claim 1, characterized by, The driving mechanism comprises a driving circuit, a power element and a transmission element, the driving circuit is electrically connected to the input end of the power element, the output end of the power element is connected to the input end of the transmission element, and the output end of the transmission element is connected to the loudspeaker mechanism.

9. The large-screen apparatus according to claim 1, wherein The driving mechanism is used to start the power element to provide power to the transmission element to adjust the relative angle under the triggering of a first signal representing the start of adjustment, or the driving mechanism is used to close the power element to stop providing power to the transmission element to fix the relative angle under the triggering of a second signal representing the stop of adjustment. The two first frames are respectively provided with one loudspeaker mechanism.

10. The large-screen device according to any one of claims 1 to 9, characterized by, Alternatively, at least one of the first frames is provided with a plurality of loudspeaker mechanisms, and the plurality of loudspeaker mechanisms on the same first frame are arranged in at least one of the vertical direction and the horizontal direction. ​

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