Audio playback device and projector

Abstract

This application discloses an audio playback device and a projector. The audio playback device includes a housing, a speaker assembly, a first rotating shaft, a mounting bracket, and a second rotating shaft. The speaker assembly is disposed on the side of the housing, and the first rotating shaft is connected to the housing. The mounting bracket is rotatably connected to the first rotating shaft. The second rotating shaft is rotatably connected to the mounting bracket, and the speaker assembly is rotatably connected to the second rotating shaft. The extension directions of the first and second rotating shafts are different, allowing the speaker assembly to rotate relative to the housing in two different directions. In this embodiment, the speaker assembly can flexibly rotate relative to the housing around two different rotating shafts, thereby achieving multi-angle adjustment of the speaker assembly. This allows the sound output direction of the sound hole to be adjusted according to the user's actual position, meeting the user's needs for sound experience in different scenarios.

Description

Technical Field

[0001] This application relates to the field of audio playback device technology, and more particularly to an audio playback device and a projector. Background Technology

[0002] Projectors are becoming increasingly common in homes. As projectors become more widespread, users not only want to enjoy a visual feast but also require a better auditory experience. Therefore, in addition to higher requirements for picture quality, the demand for high-quality sound is also growing stronger. However, in related technologies, many projectors have a fixed position when playing music, and users cannot adjust the sound output direction of the projector according to their specific needs. Utility Model Content

[0003] This application provides an audio playback device and a projector, which can adjust the audio playback direction of the device to meet the user's needs for sound experience in different scenarios.

[0004] In a first aspect, embodiments of this application provide an audio playback device, including: case; A horn assembly is disposed on the side of the housing; A first rotating shaft is connected to the housing; Mounting bracket, wherein the mounting bracket is rotatably connected to the first rotating shaft; A second rotating shaft is rotatably connected to the mounting bracket, and the horn assembly is rotatably connected to the second rotating shaft. The extension direction of the first rotating shaft is different from that of the second rotating shaft, so that the horn assembly can rotate relative to the housing in two different directions.

[0005] Secondly, embodiments of this application also provide a projector, including an optical engine and an audio playback device as described in any of the above embodiments, wherein the optical engine is disposed in a housing, and a second shock absorber is provided between the optical engine and the housing.

[0006] Based on the audio playback device and projector in this application embodiment, the audio playback device in this application embodiment can adjust the speaker assembly through the first rotating shaft and the second rotating shaft, thereby changing the sound output direction of the sound hole. This allows the sound output direction of the sound hole to be adjusted according to the user's actual position, achieving a wider sound coverage range and ensuring that the user can obtain a uniform listening experience in different positions, thus meeting the user's needs for sound experience in different scenarios. In other words, by setting two different rotating shafts, this application embodiment allows the speaker assembly to rotate flexibly relative to the housing around the two different rotating shafts, thereby realizing multi-angle adjustment of the speaker assembly. The audio playback device can not only flexibly adapt to various spatial layouts, but also improve the problem of narrow sound output directionality range of the sound hole in various scenarios, effectively reducing dead angle positions in the sound output direction, and ensuring that every position can enjoy balanced sound quality as much as possible, which is conducive to improving the user experience. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a schematic diagram of the structure of an audio playback device in one embodiment of this application; Figure 2 This is a schematic diagram of the structure of the speaker assembly of the audio playback device after it has been rotated about a first axis in one embodiment of this application. Figure 3 This is a schematic diagram of the structure of the speaker assembly of the audio playback device after it has been rotated about the second axis in one embodiment of this application. Figure 4 This is a schematic diagram of the structure of the first rotating shaft, the mounting bracket, and the second rotating shaft in one embodiment of this application; Figure 5 This is a schematic diagram of the speaker assembly in one embodiment of this application; Figure 6 This is a schematic diagram of the projector structure in one embodiment of this application; Figure 7 This is an exploded view of the projector in one embodiment of this application.

[0009] Figure label: 100. Audio playback devices; 10. Shell; 11. Receiving groove; 12. Left side; 13. Front side; 14. Right side; 20. Speaker assembly; 21. Sound outlet; 22. Outer frame; 221. Mounting cavity; 23. Speaker; 24. First damping component; 31. First rotating shaft; 311. First limiting member; 312. First sub-shaft; 313. Second sub-shaft; 32. Second rotating shaft; 321. Second limiting member; 322. Hollow cavity; 33. Mounting bracket; 331. First mating part; 332. Second mating part; 333. First bent section; 334. Connecting section; 335. Second bent section; 200. Projector; 50. Optical mechanism; 51. Projection unit; L1, first axis; L2, second axis. Detailed Implementation

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, a clear and complete description will be provided below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0011] Projectors are becoming increasingly common in homes. As projectors become more widespread, users demand a better auditory experience in addition to enjoying a visual feast. However, in most projectors, the speakers are fixed in their placement, meaning the sound output direction and the projector's position during playback are also fixed. Therefore, users can only adjust the volume of the speakers; they cannot adjust the relative position and angle of the speakers according to the user's specific needs, nor can they change the sound propagation path. Consequently, users cannot customize the auditory experience to their individual requirements.

[0012] Regarding the above situation, firstly, please refer to [link / reference needed]. Figures 1-3 This application proposes an audio playback device 100, including a housing 10, a speaker assembly 20, a first rotating shaft, a mounting bracket, and a second rotating shaft; the speaker assembly is disposed on the side of the housing, and the first rotating shaft is connected to the housing; the mounting bracket is rotatably connected to the first rotating shaft; the second rotating shaft is rotatably connected to the mounting bracket, and the speaker assembly is rotatably connected to the second rotating shaft, wherein the extension direction of the first rotating shaft 31 is different from the extension direction of the second rotating shaft 32, so that the speaker assembly can rotate relative to the housing in two different directions.

[0013] Specifically, the speaker assembly 20 has a sound outlet 21, through which the speaker assembly 20 emits sound. When the orientation of the speaker assembly 20 changes, the orientation of the sound outlet 21 on the speaker assembly 20 also changes, thereby allowing the sound outlet direction of the speaker assembly 20 to face different positions. The first rotating shaft 31 has a first axis L1 and can be disposed on the housing 10. The speaker assembly 20 is rotatably connected to the first rotating shaft 31 around the first axis L1. The second rotating shaft 32 has a second axis L2 and can be disposed on the speaker assembly 20. The second rotating shaft 32 is rotatably connected to the first rotating shaft 31 around the second axis L2, thereby driving the speaker assembly 20 to rotate around the second axis L2, thus realizing the flexible rotation of the speaker assembly 20 in two planes. The extension direction of the first axis L1 and the extension direction of the second axis L2 can be set at an acute angle, a right angle, or an obtuse angle.

[0014] The first rotating shaft 31 and the second rotating shaft 32 are spaced apart to ensure that they do not interfere with each other during rotation and that the rotation is smooth. For example, Figure 4 As shown, the first rotating shaft 31 and the second rotating shaft 32 are spaced apart along the first axis L1; or, the first rotating shaft 31 and the second rotating shaft 32 are spaced apart along the second axis L2.

[0015] It is understandable that, such as Figure 2 As shown, the speaker assembly 20 can rotate relative to the housing 10 about a first axis L1 via a first rotating shaft 31, thereby adjusting the sound output direction of the sound hole 21 in the circumferential direction about the first axis L1; as Figure 3 As shown, the speaker assembly 20 can also rotate relative to the housing 10 around the second axis L2 via the second rotating shaft 32, thereby adjusting the sound output direction of the sound hole 21 in the circumferential direction around the second axis L2, so as to achieve multi-angle and multi-directional sound output adjustment and meet the user's auditory needs in different scenarios.

[0016] It should be noted that the speaker assembly 20 can rotate around two different axes of rotation, so as to flexibly adjust the sound output direction of the speaker assembly 20, thereby meeting the user's needs for sound positioning in different scenarios and improving the user's listening experience. For example, in outdoor scenarios, where the space is large and there are no reflective walls or reflectors, the sound directionality of the audio playback device 100 is relatively narrow. However, the audio playback device 100 in this embodiment can adjust the orientation of the speaker assembly 20 via two different rotating axes, thereby changing the sound output direction of the sound outlet 21. This allows the sound output direction of the sound outlet 21 to be adjusted according to the user's actual position, achieving a wider sound coverage and ensuring that the user receives a uniform listening experience in different locations. This satisfies the user's needs for sound experience in different scenarios. In other words, by setting two different rotating axes and a mounting bracket, this embodiment allows the speaker assembly 20 to rotate flexibly around these two axes, enabling multi-angle adjustment of the speaker assembly 20. The audio playback device 100 not only flexibly adapts to various spatial layouts but also improves the problem of narrow sound directionality of the sound outlet 21 in various scenarios, effectively reducing dead zones in the sound output direction and ensuring that every location can enjoy balanced sound quality, thus enhancing the user experience.

[0017] Specifically, one end of the first rotating shaft 31 is connected to the housing 10, and the other end of the first rotating shaft 31 is rotatably connected to the mounting bracket around the first rotating shaft 31. One end of the second rotating shaft 32 is rotatably connected to the mounting bracket around the second rotating shaft 32, and the other end of the second rotating shaft 32 is connected to the speaker assembly 20, thereby enabling the speaker assembly 20 to adjust its angle relative to the housing 10 around the first rotating shaft 31 and the second rotating shaft 32.

[0018] In some embodiments, such as Figures 3-4 As shown, the first axis L1 is perpendicular to the second axis L2. The speaker assembly 20 can rotate around the two mutually perpendicular rotation axes, so that the adjustable sound output direction of the speaker assembly 20 covers as much of the periphery of the housing 10 as possible, effectively reducing the dead angle position of the sound output direction and meeting the user's needs for sound experience in different scenarios.

[0019] Furthermore, such as Figure 4 As shown, when the audio playback device 100 is in use, the extension direction of the first rotating shaft 31 is parallel to the vertical direction, and the extension direction of the second rotating shaft 32 is parallel to the horizontal direction.

[0020] Specifically, the usage state of the audio playback device 100 refers to the state in which the audio playback device 100 is placed on a flat surface and plays audio. At this time, the housing 10 has a top surface and a bottom surface arranged in a vertical direction, and the bottom surface of the housing 10 is used to place it on a flat surface such as a desktop or tabletop. It is easy to understand that the speaker assembly 20 rotates about a first rotating shaft 31 extending vertically to adjust the horizontal orientation of the sound outlet 21 on the speaker assembly 20, thereby changing the sound output direction of the sound outlet 21 on the horizontal plane; at the same time, the speaker assembly 20 can also rotate about a second rotating shaft 32 extending horizontally to adjust the vertical orientation of the sound outlet 21 on the speaker assembly 20, thereby changing the sound output direction of the sound outlet 21 on the vertical plane, thereby realizing multi-angle sound coverage of the audio playback device 100 and meeting the user's auditory needs in different scenarios.

[0021] Please see Figure 4 In some embodiments of this application, the second rotating shaft 32 has a hollow cavity 322 extending along the direction of the second axis L2. The hollow cavity 322 communicates with the cavity of the speaker assembly 20 and the interior of the housing 10. The audio playback device 100 also includes an electrical connection wire that passes through the hollow cavity 322. One end of the electrical connection wire is electrically connected to the housing 10, and the other end of the electrical connection wire is located in the cavity of the speaker assembly 20 and electrically connected to the speaker assembly 20.

[0022] Specifically, the electrical connection wire passes through the hollow cavity 322 and connects to the circuits inside the housing 10 and the speaker assembly 20, ensuring stable signal transmission between the housing 10 and the speaker assembly 20. The hollow cavity 322 set on the second rotating shaft 32 not only simplifies the structure but also facilitates cable management and prevents the speaker assembly 20 from tangling during rotation.

[0023] In some embodiments of this application, the maximum rotation angle of the horn assembly 20 relative to the housing 10 about the first rotation axis 31 is α, where α ≤ 90°; and the maximum rotation angle of the horn assembly 20 relative to the housing 10 about the second rotation axis 32 is β, where β ≤ 200°.

[0024] For example, when the audio playback device 100 is in use, the housing 10 is placed on a table. The housing 10 has six directions: front, rear, left, right, top, and bottom. A speaker assembly 20 is provided on the left side of the housing 10. When the speaker assembly 20 rotates around the first axis L1 by a maximum angle α (90°), the sound output direction of the sound hole 21 can change from the left side of the housing 10 to the rear side of the housing 10. Subsequently, when the speaker assembly 20 rotates around the second axis L2 by an angle β of 180°, the sound output direction of the sound hole 21 can pass through the rear, top, and front sides of the housing 10 in sequence. The lower side of the housing 10 is in contact with the tabletop, so the sound outlet 21 does not need to be oriented towards the lower side of the housing 10. In this embodiment, the maximum value of the β angle is 200°. Preferably, after the sound outlet 21 is rotated to face the front or rear of the housing 10, the speaker assembly 20 can still continue to rotate 10° around the second axis L2 towards the lower side of the housing 10, so that the coverage of the sound outlet 21 is wider.

[0025] Furthermore, when the speaker assembly 20 rotates 90° relative to the housing 10 about the first rotation axis 31, the sound output direction of the speaker assembly 20 is towards the front or rear side of the housing 10, so that the speaker assembly 20 can output sound to the front or rear side of the housing 10.

[0026] When the speaker assembly 20 rotates 90° relative to the housing 10 around the second rotating axis 32, the sound output direction of the speaker assembly 20 is towards the top of the housing 10, so that the speaker assembly 20 can output sound to the upper side of the housing 10, thereby meeting the user's sound positioning needs in different scenarios.

[0027] In some embodiments, such as Figure 2 As shown, the housing 10 has a receiving groove 11, and the first rotating shaft 31 is connected to the edge of the receiving groove 11. When the horn assembly 20 rotates around the first rotating shaft 31, such that the angle between the horn assembly 20 and the housing 10 is 0°, the horn assembly 20 is housed in the receiving groove 11.

[0028] It is easy to understand that the receiving groove 11 provides storage space and protection for the speaker assembly 20. The speaker assembly 20 can rotate around the first axis L1 by an angle γ with the housing 10 to realize the storage and unfolding functions of the speaker assembly 20. When the rotation angle γ is 0°, the speaker assembly 20 is stored in the receiving groove 11, which not only reduces the overall size of the audio playback device 100 and facilitates the storage and carrying of the speaker assembly 20, but also reduces the risk of accidental collisions with the speaker assembly 20. When the speaker assembly 20 is located in the receiving groove 11, the sound outlet 21 on the speaker assembly 20 is located on the side away from the housing 10. When the rotation angle γ is greater than 0°, the speaker assembly 20 rotates around the first axis L1 and moves away from the receiving groove 11. Subsequently, the speaker assembly 20 can be adjusted to rotate around the second axis L2 according to specific needs.

[0029] Furthermore, when the speaker assembly 20 is located in the receiving groove 11, the sound output direction of the speaker assembly 20 faces the left and / or right side of the housing 10. For example, when the speaker assembly 20 is provided on the left side of the housing 10 and is located in the receiving groove 11, the sound output direction of the speaker assembly 20 faces the left side of the housing 10; as another example, when the speaker assembly 20 is provided on the right side of the housing 10 and is located in the receiving groove 11, the sound output direction of the speaker assembly 20 faces the right side of the housing 10; as yet another example, when the speaker assemblies 20 are provided on both the left and right sides of the housing 10, and both speaker assemblies 20 are located in the receiving groove 11, the sound output directions of the speaker assemblies 20 on both sides can face the left and right sides of the housing 10, respectively.

[0030] Please see Figure 4 In some embodiments of this application, the mounting bracket 33 includes a first mating part 331 and a second mating part 332. The first mating part 331 and the second mating part 332 are connected. The first mating part 331 is rotatably connected to one end of the first rotating shaft 31 around the first axis line L1. The other end of the first rotating shaft 31 is fixedly connected to the housing 10. The second mating part 332 is rotatably connected to the second rotating shaft 32 around the second axis line L2.

[0031] Specifically, the mounting bracket 33 makes the speaker assembly 20 more stable and reliable when rotating at multiple angles. Through the precise design of the mating parts, the mounting bracket 33 assembly not only achieves flexible rotation function, but also ensures the compactness and durability of the structure.

[0032] Further reading is available upon request. Figure 4In some embodiments of this application, the mounting bracket 33 further includes a first bent segment 333, a connecting segment 334, and a second bent segment 335 connected in sequence. The first bent segment 333 and the second bent segment 335 are disposed opposite to each other. A first mating part 331 is provided on the end of the first bent segment 333 away from the connecting segment 334 and the end of the second bent segment 335 away from the connecting segment 334. A second mating part 332 is disposed on the connecting segment 334. The first mating part 331 and the second mating part 332 are spaced apart along the extension direction of the connecting segment 334.

[0033] Specifically, both the first bent section 333 and the second bent section 335 of the mounting bracket 33 are provided with first mating parts 331. The mounting bracket 33 is rotatably connected to the first rotating shaft 31 through the two first mating parts 331, which can improve the stability of the rotatable connection between the mounting bracket 33 and the first rotating shaft 31, thereby reducing the possibility of loosening or displacement of the speaker assembly 20 during rotation around the first axis L1. The first mating parts 331 and the second mating parts 332 are spaced apart along the direction of the second axis L2, so there is a gap between the speaker assembly 20 and the housing 10, thereby reducing the interference of the housing 10 on the rotation of the speaker assembly 20, allowing the speaker assembly 20 to be rotated more flexibly.

[0034] Furthermore, please continue to see Figure 4 In some embodiments of this application, the first rotating shaft 31 includes a first branch shaft 312 and a second branch shaft 313 arranged at intervals along the extending direction of the first rotating shaft 31. One end of the first branch shaft 312 is rotatably connected to the first mating part 331 on the first bent section 333, and the other end of the first branch shaft 312 is connected to the housing 10. The second branch shaft 313 is rotatably connected to the first mating part 331 on the second bent section 335, and the other end of the second branch shaft 313 is connected to the housing 10.

[0035] Specifically, both the first split shaft 312 and the second split shaft 313 are fixedly connected to the housing 10, thereby stabilizing their positions and preventing relative movement between the first rotating shaft 31 and the housing 10. The two ends of the mounting bracket 33 are respectively mounted on the first split shaft 312 and the second split shaft 313. This arrangement ensures that the mounting bracket 33 remains balanced during rotation, further improving the rotational accuracy and stability of the speaker assembly 20. Simultaneously, the split-shaft configuration of the first rotating shaft 31 helps to disperse stress during rotation, optimize torque distribution, reduce the load on a single bearing, improve the fatigue resistance of the overall structure, ensure efficient and stable rotational performance during long-term use, and extend the service life of the assembly.

[0036] Furthermore, the split-shaft structure facilitates later maintenance and replacement. Only the damaged split shaft needs to be adjusted or replaced individually, without the need for complete disassembly, which improves maintenance efficiency. The second rotating shaft 32 can be located in the gap between the first split shaft 312 and the second split shaft 313, thus forming a more compact structural layout and reducing space occupation.

[0037] Further reading is available upon request. Figure 4 In some embodiments of this application, a first limiting member 311 is provided on the first rotating shaft 31. The first limiting member 311 is used to abut against the first mating part 331 to limit the rotation of the first mating part 331. The first limiting member 311 is positioned at a preset limiting point to ensure that the horn assembly 20 does not exceed a set maximum rotation angle α when rotating around the first axis L1, thereby effectively preventing structural damage caused by excessive rotation of the horn assembly 20.

[0038] Similarly, such as Figure 4 As shown, a second limiting member 321 is provided on the second rotating shaft 32. The second limiting member 321 is used to abut against the second mating part 332 to limit the rotation of the second mating part 332. The second limiting member 321 is also set at a preset limiting point to ensure that the speaker assembly 20 will not exceed the set maximum rotation angle β when rotating around the second axis L2, thereby effectively preventing structural damage caused by excessive rotation of the speaker assembly 20. The dual limiting setting of the first limiting member 311 and the second limiting member 321 can not only ensure the stability of the speaker assembly 20 in multi-angle adjustment, but also further improve the safety and service life of the speaker assembly 20.

[0039] Please see Figure 5 In some embodiments of this application, the speaker assembly 20 includes an outer frame 22, a speaker 23, and a first damping member 24. The outer frame 22 is rotatably connected to the housing 10. The sound outlet 21 is disposed on the outer frame 22. The outer frame 22 has a mounting cavity 221. The speaker 23 and the first damping member 24 are both located in the mounting cavity 221. The first damping member 24 is located between the speaker 23 and the inner wall of the mounting cavity 221, and is connected to the speaker 23 and the inner wall of the mounting cavity 221.

[0040] It is easy to understand that the outer frame 22 provides the installation space and foundation for the speaker 23. The speaker 23 is electrically connected to the housing 10. The speaker 23 is used to generate sound and transmit the sound to the outside through the sound outlet 21. The first damping member 24 is in close contact with the speaker 23 and the inner wall of the mounting cavity 221, thereby effectively reducing the vibration transmission of the speaker 23 and improving the sound quality and clarity of the speaker assembly 20. Multiple first damping members 24 can be provided, and each first damping member 24 can be a rubber pad or a silicone pad, which helps to absorb the vibration generated by the speaker 23, ensuring the purity and stability of the sound transmission of the speaker assembly 20 and improving the overall sound performance.

[0041] Secondly, please see Figures 6-7 This application also provides a projector 200, including an optical engine 50 and an audio playback device 100 as described in any of the above embodiments. The optical engine 50 is electrically connected to the audio playback device 100, and the optical engine 50 is disposed in the housing 10.

[0042] It is understood that the optical engine 50 can be used to project images, while the audio playback device 100 can provide sound effects synchronized with the images. The two work together to achieve audiovisual integration. In this embodiment, the projector 200 can adjust the sound output direction of the audio playback device 100 to meet the user's sound positioning needs in different scenarios, which is beneficial to improving the user's audiovisual experience and enhancing the overall performance and user experience of the projector 200.

[0043] A second shock absorber is provided between the optical engine 50 and the housing 10. The second shock absorber is in close contact with both the optical engine 50 and the housing 10. The second shock absorber can reduce the transmission of vibrations during the operation of the optical engine 50, ensuring the stability and clarity of the projected image. At the same time, the second shock absorber can be a rubber pad or a silicone pad, which helps to absorb the vibrations generated during the operation of the optical engine 50.

[0044] Please see Figures 6-7 In some embodiments of this application, the peripheral side surface of the housing 10 includes a left side surface 12, a front side surface 13, and a right side surface 14. The left side surface 12 and the right side surface 14 are disposed opposite to each other, and the front side surface 13 is located between the left side surface 12 and the right side surface 14. The optical engine 50 has a projection part 51, which is disposed on the front side surface 13. The audio playback device 100 includes two speaker assemblies 20, which are respectively disposed on the left side surface 12 and the right side surface 14.

[0045] The two speaker assemblies 20 are symmetrically distributed on the housing 10, which facilitates uniform sound coverage and further enhances the audiovisual effect of the projector 200. Preferably, the projection unit 51 of the optical engine 50 is located on the front side of the housing 10, and the two speaker assemblies 20 are located on the left and right sides of the housing 10. When the projector 200 is placed and used, the sound output direction of the speaker assemblies 20 can be adjusted according to the user's actual usage position, thereby facilitating the formation of a surround sound field, enhancing the immersive sound effect, and optimizing the user experience.

[0046] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0047] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An audio playback device, characterized in that, include: case; A horn assembly is disposed on the side of the housing; A first rotating shaft is connected to the housing; Mounting bracket, wherein the mounting bracket is rotatably connected to the first rotating shaft; A second rotating shaft is rotatably connected to the mounting bracket, and the horn assembly is rotatably connected to the second rotating shaft. The extension direction of the second rotating shaft is different from that of the first rotating shaft, so that the horn assembly can rotate relative to the housing in two different directions.

2. The audio playback device according to claim 1, characterized in that, The extension direction of the first rotating shaft is perpendicular to the extension direction of the second rotating shaft.

3. The audio playback device according to claim 2, characterized in that, When the audio playback device is in use, the extension direction of the first rotating shaft is parallel to the vertical direction, and the extension direction of the second rotating shaft is parallel to the horizontal direction.

4. The audio playback device according to claim 1, characterized in that, The mounting bracket includes a first mating part and a second mating part. The first mating part is connected to the second mating part. The first mating part is rotatably connected to one end of the first rotating shaft. The other end of the first rotating shaft is fixedly connected to the housing. The second mating part is rotatably connected to the second rotating shaft.

5. The audio playback device according to claim 4, characterized in that, The mounting bracket further includes a first bent section, a connecting section, and a second bent section connected in sequence. The first bent section and the second bent section are arranged opposite to each other. The first mating part is provided on the end of the first bent section away from the connecting section and the end of the second bent section away from the connecting section. The second mating part is provided on the connecting section. The first mating part and the second mating part are spaced apart along the extension direction of the connecting section.

6. The audio playback device according to claim 5, characterized in that, The first rotating shaft includes a first sub-shaft and a second sub-shaft arranged at intervals along the extending direction of the first rotating shaft. One end of the first sub-shaft is rotatably connected to the first mating part on the first bent section, and the other end of the first sub-shaft is connected to the housing. One end of the second sub-shaft is rotatably connected to the first mating part on the second bent section, and the other end of the second sub-shaft is connected to the housing.

7. The audio playback device according to claim 4, characterized in that, A first limiting member is provided on the first rotating shaft, the first limiting member being used to abut against the first mating part to restrict the rotation of the first mating part; and / or, A second limiting member is provided on the second rotating shaft. The second limiting member is used to abut against the second mating part to restrict the rotation of the second mating part.

8. The audio playback device according to claim 1, characterized in that, The second rotating shaft has a hollow cavity extending along the extending direction of the second rotating shaft, the hollow cavity communicating with the cavity of the horn assembly and the interior of the housing; The audio playback device also includes an electrical connection wire that passes through the hollow cavity, with one end electrically connected to electronic devices inside the housing and the other end located inside the speaker assembly and electrically connected to the speaker assembly.

9. The audio playback device according to claim 1, characterized in that, The maximum rotation angle of the horn assembly relative to the housing about the first rotation axis is α, where α ≤ 90°; the maximum rotation angle of the horn assembly relative to the housing about the second rotation axis is β, where β ≤ 200°.

10. The audio playback device according to claim 9, characterized in that, When the speaker assembly rotates 90° relative to the housing about the first rotation axis, the sound output direction of the speaker assembly is towards the front or rear side of the housing. When the speaker assembly rotates 90° relative to the housing about the second rotation axis, the sound output direction of the speaker assembly is towards the top of the housing.

11. The audio playback device according to claim 1, characterized in that, The housing has a receiving groove, and the first rotating shaft is connected to the edge of the receiving groove. When the horn assembly rotates around the first rotating shaft such that the included angle between the horn assembly and the housing is 0°, the horn assembly is housed in the receiving groove.

12. The audio playback device according to claim 11, characterized in that, When the speaker assembly is located in the receiving slot, the sound output direction of the speaker assembly is towards the left and / or right side of the housing.

13. The audio playback device according to claim 1, characterized in that, The horn assembly includes an outer frame, a horn, and a first shock absorber. The outer frame is rotatably connected to the housing via a first rotating shaft and a second rotating shaft. The outer frame has a mounting cavity, in which the horn and the first shock absorber are both located. The first shock absorber is located between the horn and the inner wall of the mounting cavity, and is connected to both the horn and the inner wall of the mounting cavity.

14. A projector, characterized in that, The device includes an optical engine and an audio playback device as described in any one of claims 1 to 13, wherein the optical engine is disposed in the housing and a second shock absorber is provided between the optical engine and the housing.

15. The projector according to claim 14, characterized in that, The peripheral side surface of the housing includes a left side surface, a front side surface, and a right side surface, with the left side surface and the right side surface being disposed opposite each other, and the front side surface being located between the left side surface and the right side surface; The optical engine has a projection section, which is disposed on the front side. The audio playback device includes two speaker assemblies, which are respectively disposed on the left side and the right side.

Images