An integrated smart steering digital audio device

Abstract

The application belongs to the technical field of sound equipment, and particularly relates to an integrated intelligent steering digital sound equipment. In view of the problem that the sound unit of the current sound equipment cannot follow the movement of the personnel to adjust the direction, the following scheme is provided, which comprises a main shell, a mesh panel, a sealing back plate, a front decorative panel and a rear decorative panel. A sound unit mounting groove is formed in the front side of the main shell. A steering assembly is mounted in the inside of the sound unit mounting groove. The inside of the steering assembly is mounted with a sound unit. A control panel is further arranged on the top of the main shell. The processor of the application generates data by real-time identification of the position of the human body through an algorithm, including the direction and the distance, and calibrates the generated direction and distance with the current position of the steering assembly. The four connecting rod telescopic assemblies in the steering assembly act in coordination to control the rotation of the four driving motors, so that the sound unit outputs sound aiming at the current position of the human body.

Description

Technical Field

[0001] This invention relates to the field of audio equipment technology, and more particularly to an integrated intelligent steering digital audio device. Background Technology

[0002] An audio system is an audio system composed of electrical devices, including sound source devices, signal processing devices, amplification devices, and sound reproduction devices. It realizes sound recording and playback through electrical energy conversion. Its core components include speakers, power amplifiers, mixing consoles, etc. The speakers generate sound waves by vibrating the air through the speaker units. Its applications cover home audio-visual, in-vehicle entertainment, and professional sound reinforcement.

[0003] As disclosed in Chinese patent document CN117041778B, this invention discloses a multifunctional outdoor speaker, including a cabinet and a speaker body. A power supply component is provided on the left side of the cabinet. Front and rear plates are hinged to the front and rear sides of the cabinet. A sliding rod is fixedly installed inside the internal groove. A slider is slidably connected to the outside of the sliding rod. A first connecting rod is hinged between the slider and the front and rear plates. A stabilizing block is inserted between the inside and outside of the internal groove. A stabilizing base plate is fixedly installed at the bottom of the stabilizing block and below the cabinet. The above-disclosed technology has the following problems: During the use of the speaker, the position of the speaker is fixed. When the user in front of the speaker moves, the speaker cannot align itself directly with the user. The inability of the speaker to turn significantly reduces the user experience. Existing technologies do not easily solve this problem. Therefore, there is an urgent need for an integrated intelligent steering digital speaker device to solve the above problems. Summary of the Invention

[0004] Addressing the technical problem that current audio units cannot adjust their direction to follow the movement of people, this invention proposes an integrated intelligent steering digital audio device.

[0005] The present invention proposes an integrated intelligent steering digital audio device, comprising a main housing, a mesh panel, a sealed back plate, a front decorative panel, and a rear decorative panel. The front side of the main housing is provided with a sound unit mounting slot. A steering component is installed inside the sound unit mounting slot of the main housing. A sound unit is installed inside the steering component. A control panel is also provided on the top of the main housing. Steering assembly: includes a main housing connecting frame and a sound unit mounting frame. The main housing connecting frame and the sound unit mounting frame are connected and installed through four telescopic linkage assemblies. The main housing connecting frame is fixed to the inside of the main housing. The four telescopic linkage assemblies have the same structure. A sensor assembly is located on the top front side of the main housing, which includes a signal receiving sensor and a signal transmitting sensor.

[0006] Preferably, a passive diaphragm mounting groove is provided on the front side of the main housing, and a passive diaphragm is fixed at the front position of the passive diaphragm mounting groove.

[0007] Preferably, bolt holes are provided at the four corners of the outer side of the front decorative panel for fixing the front decorative panel and the mesh panel to the front side of the main housing, and bolt holes are provided at the four corners of the outer side of the rear decorative panel for fixing the rear decorative panel and the sealing back plate to the rear side of the main housing.

[0008] Preferably, the sensor assembly is used to monitor the distance and position of a human body in front of the speaker, the signal transmitting sensor is used to transmit electromagnetic waves, and the signal receiving sensor is used to receive the electromagnetic wave signal reflected by the human body after the electromagnetic wave transmitted by the signal transmitting sensor.

[0009] Preferably, the telescopic linkage assembly includes a main linkage and a sliding linkage. The ends of the main linkage and the sliding linkage are respectively mounted on the main housing connecting frame and the sound unit mounting frame by ball joint mounting. The sliding linkage also includes a telescopic inner rod, and the sliding linkage is slidably sleeved with the interior of the main linkage.

[0010] Preferably, a drive housing is fixed at one end of the outer wall of the main connecting rod, a drive motor is installed inside the drive housing, and a worm gear is installed on the output shaft of the drive motor.

[0011] Preferably, the telescopic inner rod has a side tooth on one side of its circumference, and the outer circumference of the worm gear meshes with the side tooth.

[0012] Preferably, the mesh panel has an array of honeycomb holes in the middle position to conduct the sound emitted by the sound unit to the outside of the speaker.

[0013] Preferably, the sound unit mounting bracket has a mounting hole in the middle for fixing the sound unit, and the sound unit is a full-range speaker.

[0014] Preferably, a movable hole is provided in the middle of the main housing connecting frame, and the diameter of the movable hole is larger than the diameter of the tail end of the sound unit, so that the sound unit does not come into contact with the main housing connecting frame when turning.

[0015] The beneficial effects of this invention are as follows: 1. In this integrated intelligent steering digital audio device, the sensor components collect signals and transmit them back to the processor in the motherboard. The processor uses algorithms to identify the human body position in real time, including orientation and distance, and calibrates the generated orientation and distance with the current position of the steering component. The four linkage telescopic components in the steering component coordinate to control the rotation of four drive motors, so that the sound unit is aimed at the current position of the human body to output sound.

[0016] 2. This integrated intelligent steering digital audio device has side teeth on one side of the circumference of the telescopic inner rod. The outer circumference of the worm gear meshes with the side teeth. The worm gear and the telescopic inner rod have unidirectional transmission, and power can only be transmitted to the telescopic inner rod through the worm gear. After the worm gear stops rotating, the telescopic inner rod has self-locking properties, which can ensure the working stability of the sound unit after steering and prevent the sound quality from being affected by the shaking of the telescopic linkage assembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an integrated intelligent steering digital audio device proposed in this invention; Figure 2 This is a rear-view exploded view schematic diagram of an integrated intelligent steering digital audio device proposed in this invention. Figure 3 This is a front-view exploded view of the structure of an integrated intelligent steering digital audio device proposed in this invention. Figure 4 This is a partial structural diagram of the rotating mechanism of an integrated intelligent steering digital audio device proposed in this invention; Figure 5 This is a schematic diagram of a partial frame structure of the rotating mechanism of an integrated intelligent steering digital audio device proposed in this invention. Figure 6 This is a schematic diagram of the extended component structure of an integrated intelligent steering digital audio device proposed in this invention.

[0018] In the diagram: 1. Main housing; 2. Front decorative panel; 3. Rear decorative panel; 4. Main board; 5. Battery; 6. Sound unit; 7. Mesh panel; 8. Sealing back plate; 9. Signal receiving sensor; 10. Passive diaphragm; 11. Signal transmitting sensor; 12. Sound unit mounting slot; 13. Passive diaphragm mounting slot; 14. Main housing connecting frame; 15. Sound unit mounting frame; 16. Movable hole; 17. Mounting hole; 18. First ball joint; 19. Second ball joint; 20. Main connecting rod; 21. Sliding connecting rod; 22. Drive housing; 23. Sliding chamber; 24. Telescopic inner rod; 25. First universal ball joint; 26. Second universal ball joint; 27. Side gear; 28. Drive motor; 29. ​​Worm gear. Detailed Implementation

[0019] Reference Figure 1 , Figure 2An integrated intelligent steering digital audio device includes a main housing 1, a mesh panel 7, a sealing back plate 8, a front decorative panel 2, and a rear decorative panel 3. A battery 5 and a main board 4 are also installed inside the main housing 1. The main board 4 is mounted on the top of the main housing 1. The front decorative panel 2 and the mesh panel 7 are mounted on the front side of the main housing 1, and bolt holes are provided at the four corners of both the front decorative panel 2 and the mesh panel 7. Bolts are used to fix the front decorative panel 2 and the mesh panel 7 to the front side of the main housing 1. The rear decorative panel 3 and the sealing back plate 8 are mounted on the rear side of the main housing 1, and bolt holes are provided at the four corners of both the rear decorative panel 3 and the sealing back plate 8. Bolts are used to fix the rear decorative panel 3 and the sealing back plate 8 to the rear side of the main housing 1.

[0020] The bolt holes at the four corners of the front decorative panel 2 and the rear decorative panel 3 are 4-5mm in diameter and are adapted to the threaded holes at the corresponding positions on the front and rear sides of the main housing 1. The front decorative panel 2 and the mesh panel 7 are fixed to the front side of the main housing 1 by M4-M5 cross-slot countersunk bolts, and the rear decorative panel 3 and the sealing back plate 8 are fixed to the rear side of the main housing 1. The bolt heads are recessed into the interior to avoid protruding and affecting the appearance and safety of use.

[0021] Battery 5 uses a lithium-ion battery with a preferred capacity of 10000mAh and a nominal voltage of 3.7V. It supports fast charging, with a charging time of 2-3 hours. When fully charged, it can support continuous operation of the device for 8-12 hours (depending on the volume). Battery 5 is wrapped with a flame-retardant insulating sleeve to prevent safety accidents caused by battery short circuits or overheating. Battery 5 is electrically connected to the power management module on the motherboard via wires. The power management module can realize functions such as charging protection, over-discharge protection, and overcurrent protection for the battery, extending the service life of battery 5.

[0022] The motherboard 4 is made of epoxy resin glass fiber substrate (FR-4 substrate) with a thickness of 1.6mm. It integrates a processor (CPU), audio processing module, motor drive module, sensor signal receiving module, wireless communication module (such as Bluetooth and WiFi modules), and power management module. The processor uses an STM32 series microcontroller, preferably the STM32F407, which features high performance and low power consumption, enabling it to process sensor signals, control steering components, and decode audio signals. The audio processing module uses a TI TAS5756M chip, supporting multi-channel audio processing and optimizing audio signals through amplification and noise reduction to improve sound quality. The motor drive module uses an A4988 stepper motor driver chip, precisely controlling the rotation angle and speed of the drive motor. The sensor signal receiving module receives human position signals transmitted from the sensor components and transmits them to the central processing unit. The wireless communication module supports Bluetooth 5.0 and WiFi 802.11b / g / n protocols, enabling wireless connection between the device and mobile phones, computers, and other terminal devices, facilitating audio playback and device control.

[0023] Reference Figure 1 To solve the sealing problem inside the speaker, during the fixing process of the front decorative panel 2, the mesh panel 7, the rear decorative panel 3, and the sealing back plate 8, sealing strips are pasted on the contact points between the mesh panel 7 and the sealing back plate 8 and the main housing 1. After fixing, the mesh panel 7 and the sealing back plate 8 can be sealed with the internal space of the main housing 1, ensuring that the speaker's sound output is directed to the front. It also effectively prevents the mesh panel 7 and the sealing back plate 8 from resonating during the speaker's sound output, thus avoiding sound quality distortion caused by resonance.

[0024] Reference Figure 1 The front decorative panel 2 and the rear decorative panel 3 are composite structures of "metal sheet + external silicone coating". The structure of the front decorative panel 2 and the rear decorative panel 3 is that the inside is a metal sheet, and the outside of the metal sheet is covered with silicone material. The bottom of the front decorative panel 2 and the rear decorative panel 3 are provided with silicone bases to increase the contact area. The cross-section of the silicone base is trapezoidal, and the bottom contact area is 30%-50% larger than the bottom area of ​​the panel body. When the speaker is placed and used, it can effectively maintain stability and suppress the vibration and displacement of the speaker during sound production. The front decorative panel 2 has a rectangular opening in the middle, and the mesh cover groove is provided around the rectangular opening. The mesh cover groove is 2-3mm deep and is used to embed and install the mesh cover. While ensuring that the sound of the speaker unit 6 can penetrate the front decorative panel 2, it can also effectively prevent dust from entering the speaker. The logo pattern is also hot-stamped in the middle of the front side of the mesh cover.

[0025] ReferenceFigure 1 A handle is provided at the top of the main housing 1. The handle is made of silicone and is installed by embedding it into the interior of the main housing 1. The fixing bolts of the mesh panel 7 and the sealing back plate 8 then fix the handle and finally screw it into the threaded hole of the main housing 1, so that the handle is tightly fixed to the main housing 1 and prevents the handle from loosening or falling off during carrying. The height of the handle (measured from the top surface of the main housing 1) is 50-60mm, which is convenient for users to hold and does not protrude excessively, affecting the overall aesthetics of the equipment.

[0026] Reference Figures 3-5 In order to solve the problem that when the speaker is emitting sound, the sound output is directed to a certain position and cannot follow the movement of the human body to achieve the function of follow output, the front side of the main housing 1 is provided with a sound unit mounting slot 12. The main housing 1 is located inside the sound unit mounting slot 12 and a steering component is installed inside the steering component. The sound unit 6 is installed inside the steering component. The top of the main housing 1 is also provided with a control panel. Steering assembly: includes main housing connecting frame 14, which is an integral structure with the main housing 1, and its overall structure is made of aluminum alloy. The overall structure of the main housing 1 and the main housing connecting frame 14 is integrally formed by metal machining. The integral structure after forming can effectively ensure the stability of the main housing connecting frame 14, that is, ensure the stability of the speaker unit 6 during output. Speaker unit mounting bracket 15 is made of aluminum alloy of the same specifications as the main housing 1. Bolt holes are provided at the four corners of the speaker unit mounting bracket 15. The speaker unit 6 is fixed to the corresponding four bolt holes by bolts. During the installation of the speaker unit 6 and the speaker unit mounting bracket 15, a silicone strip is bonded between the two to suppress the vibration generated by the speaker unit 6 during operation.

[0027] Reference Figure 6The main housing connecting frame 14 and the speaker unit mounting frame 15 are connected and installed via four telescopic linkage assemblies. The main housing connecting frame 14 is fixed to the interior of the main housing 1. The four telescopic linkage assemblies have the same structure, including a main connecting rod 20 and a sliding connecting rod 21. The ends of the main connecting rod 20 and the sliding connecting rod 21 are respectively installed on the main housing connecting frame 14 and the speaker unit mounting frame 15 via ball joint mounting. The main connecting rod 20 is connected to the main housing connecting frame 14 via a first ball joint member. The first ball joint member includes a first ball joint seat 18 fixed to one side of the main housing connecting frame 14, and a first universal ball joint 25 fixed to one end of the main connecting rod 20. The installation method between the first universal ball joint 25 and the first ball joint seat 18 is to directly insert the first universal ball joint 25 into the interior of the first ball joint seat 18. It can swing at any angle inside the first ball joint 18; the sliding link 21 is connected to the sound unit mounting bracket 15 through the second ball joint, which includes a second ball joint 19 fixed to one side of the sound unit mounting bracket 15, and a second universal ball joint 26 fixed to one end of the sliding link 21. The second universal ball joint 26 is installed directly into the second ball joint 19, and the second universal ball joint 26 can swing at any angle inside the second ball joint 19. The first ball joint 18 and the second ball joint 19 are made of engineering plastic material (such as POM polyoxymethylene). The diameter of the first universal ball joint 25 and the second universal ball joint 26 is 5-6mm, and the surface is polished with a roughness Ra≤0.8μm to ensure smooth rotation.

[0028] Reference Figure 6 To ensure stable outward extension or inward retraction of the sliding link 21 and improve the bending resistance of the telescopic link assembly, the sliding link 21 also includes a telescopic inner rod 24. The sliding link 21 and the telescopic inner rod 24 are designed as a single unit. To maintain the bending resistance of the entire telescopic link assembly, the sliding link 21 and the telescopic inner rod 24 are made of high-strength alloy steel, preferably 40Cr, and formed by forging and machining. The main link 20 has a sliding chamber 23 inside, and the diameter of the sliding chamber 23 is the same as the diameter of the sliding link 21. The sliding link 21 and the sliding chamber 23 inside the main link 20 are slidably fitted together. The diameter of the telescopic inner rod 24 is slightly smaller than the diameter of the sliding link 21, and during the operation of the telescopic link assembly, the extension path of the telescopic inner rod 24 will not exceed the outside of the main link 20.

[0029] Reference Figure 6To address the issue of poor stability caused by the swaying of the connecting rod extension assembly during steering, a drive housing 22 is fixed to one end of the outer wall of the main connecting rod 20. Inside the drive housing 22 is a drive motor 28, which is a stepper motor. Stepper motors can achieve a fixed pulse signal rotation ratio, preventing unnecessary drive movements. The drive motor 28 can be a Xinhailong 5mm stepper motor. A worm gear 29 is mounted on the output shaft of the drive motor 28, extending along one side of the circumference of the telescopic inner rod 24. The position is provided with a side toothed part 27, and the outer circumferential wall of the worm 29 meshes with the side toothed part 27. The module of the side toothed part 27 is 0.5-1, the number of teeth is 20-30, and the tooth shape is an involute tooth shape. It is used to mesh and transmit power with the worm 29. The worm 29 and the telescopic inner rod 24 have unidirectional transmission. Power can only be transmitted to the telescopic inner rod 24 through the worm 29. After the worm 29 stops rotating, the telescopic inner rod has self-locking property, which can ensure the working stability of the sound unit 6 after turning and will not affect the sound quality due to the shaking of the telescopic linkage assembly.

[0030] Reference Figures 2-3 To provide a precise turning target for the speaker's steering assembly, a sensor assembly is installed on the top front side of the main housing 1. The sensor assembly uses millimeter-wave radar for monitoring, preferably a 77GHz short-range radar, with smaller transmitting and receiving units. The receiving and transmitting units are respectively set as signal receiving sensor 9 and signal transmitting sensor 11. Both signal receiving sensor 9 and signal transmitting sensor 11 are positioned facing the front of the speaker as their working surfaces. During operation, the signal transmitting sensor 11 transmits signals forward in real time, which are reflected by the human body and received in real time by the signal receiving sensor 9. The sensor assembly collects the signals and transmits them back to the processor in the motherboard 4. The processor uses an algorithm to identify the human body's position in real time, including orientation and distance, and calibrates the generated orientation and distance with the current position of the steering assembly. The four linkage extension components in the steering assembly coordinate their movements, controlling the rotation of the four drive motors 28 respectively, so that the sound unit 6 is aimed at the current position of the human body and outputs sound.

[0031] Reference Figure 3 , Figure 4 The front side of the main housing 1 is provided with a passive diaphragm mounting groove 13. A passive diaphragm 10 is fixed at the front side of the passive diaphragm mounting groove 13. Four bolt holes are provided around the circumference of the passive diaphragm mounting groove 13. The passive diaphragm 10 is installed and fixed to the passive diaphragm mounting groove 13 by bolts. The passive diaphragm 10 is fixed by embedding. The groove between the passive diaphragm 10 and the passive diaphragm mounting groove 13 is filled with sealing strips for sealing between the passive diaphragm 10 and the main housing 1, and can suppress the noise generated by the passive diaphragm 10 when it vibrates.

[0032] ReferenceFigure 2 , Figure 3 The mesh panel 7 has an array of honeycomb holes in the middle position to conduct the sound emitted by the sound unit 6 to the outside of the speaker.

[0033] Reference Figure 4 , Figure 5 A movable hole 16 is provided in the middle of the main housing connecting frame 14. The diameter of the movable hole 16 is larger than the diameter of the tail end of the sound unit 6. The sound unit 6 does not contact the main housing connecting frame 14 when it is turned. When the four telescopic linkage assemblies adjust the orientation of the sound unit 6, in order to ensure the safety of the tail end of the sound unit 6, the diameter of the movable hole 16 is larger than the diameter of the tail end of the sound unit 6. The sound unit 6 adopts a full-range speaker, preferably the HiVi M4N full-range speaker unit. The diameter of this speaker unit is 4 inches (about 101.6mm), the rated power is 20W, the impedance is 8Ω, the frequency response range is 60Hz-20kHz, and the sensitivity is 88dB. It can achieve clear sound quality output across the entire frequency range and meet the user's playback needs for different types of audio (such as music, voice, and movie sound effects).

[0034] When this invention is in use: During the operation of the speaker, the sound unit 6 amplifies and plays the audio signal received by the motherboard 4. The user controls the speaker playback through the control panel on the top of the main housing 1. During use, people often move, but the speaker cannot move autonomously to follow the position of the person. Therefore, through the operation of the sensor components, the signal receiving sensor 9 transmits the signal and the signal receiving sensor 11 receives the signal in real time, and feeds the signal back to the processor in real time. The processor calculates the position of the human body, including angle and distance information, and compares it with the current offset position of the sound unit 6, and gives the variables that the sound unit 6 needs to be adjusted. It feeds back rotation pulse signals to the four drive motors 28 respectively. The rotation of the four drive motors 28 adjusts the sound unit 6 to point at the position of the human body, so that the speaker can follow the human body to provide the best sound experience. During the turning adjustment process of the sound unit 6, the signal recognition of the sensor components and the signal calculation of the processor and the signal link fed back to the four drive motors 28 is a real-time calculation process. The sound unit 6 can turn to follow the movement of the human body. When multiple people are moving in front of the speaker during use, after the signal transmission and reception of the sensor components are sent back to the processor, the processor will calculate the position of each person, including the angle and distance, to obtain the area position of the people in front of the speaker. The processor will then give the four drive motors 28 adjustment pulse signals to the sound unit 6 to adjust it to the center position of the area, so as to balance the sound reception effect for each listener.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An integrated intelligent steering digital audio device, comprising a main housing (1), a mesh panel (7), a sealing back plate (8), a front decorative panel (2), and a rear decorative panel (3), characterized in that, The front side of the main housing (1) is provided with a sound unit mounting slot (12). The main housing (1) is located inside the sound unit mounting slot (12) and a steering component is installed inside the steering component. A sound unit (6) is installed inside the steering component. A control panel is also provided on the top of the main housing (1). Steering assembly: includes main housing connecting frame (14) and sound unit mounting frame (15). The main housing connecting frame (14) and sound unit mounting frame (15) are connected and installed by four telescopic linkage assemblies. The main housing connecting frame (14) is fixed to the interior of the main housing (1). The four telescopic linkage assemblies have the same structure. A sensor assembly is provided on the front top of the main housing (1), which includes a signal receiving sensor (9) and a signal transmitting sensor (11).

2. The integrated intelligent steering digital audio device according to claim 1, characterized in that, The front side of the main housing (1) is also provided with a passive diaphragm mounting groove (13), and a passive diaphragm (10) is fixed at the front side of the passive diaphragm mounting groove (13).

3. The integrated intelligent steering digital audio device according to claim 2, characterized in that, Bolt holes are provided at the four corners of the outer side of the front decorative panel (2) for fixing the front decorative panel (2) and the mesh panel (7) to the front side of the main housing (1). Bolt holes are provided at the four corners of the outer side of the rear decorative panel (3) for fixing the rear decorative panel (3) and the sealing back plate (8) to the rear side of the main housing (1).

4. The integrated intelligent steering digital audio device according to claim 1, characterized in that, The sensor assembly is used to monitor the distance and position of the human body in front of the speaker. The signal transmitting sensor (11) is used to transmit electromagnetic waves, and the signal receiving sensor (9) is used to receive the electromagnetic wave signal reflected by the human body after the electromagnetic wave transmitted by the signal transmitting sensor (11).

5. The integrated intelligent steering digital audio device according to claim 1, characterized in that, The telescopic linkage assembly includes a main linkage (20) and a sliding linkage (21). The ends of the main linkage (20) and the sliding linkage (21) are respectively mounted on the main housing connecting frame (14) and the sound unit mounting frame (15) by ball joint mounting. The sliding linkage (21) also includes a telescopic inner rod (24). The sliding linkage (21) is slidably sleeved between the inside of the main linkage (20).

6. The integrated intelligent steering digital audio device according to claim 5, characterized in that, A drive housing (22) is fixed at one end of the outer wall of the main connecting rod (20). A drive motor (28) is installed inside the drive housing (22), and a worm gear (29) is installed on the output shaft of the drive motor (28).

7. The integrated intelligent steering digital audio device according to claim 6, characterized in that, The telescopic inner rod (24) has a side tooth (27) on one side of its circumference, and the outer circumference of the worm (29) meshes with the side tooth (27).

8. The integrated intelligent steering digital audio device according to claim 1, characterized in that, The mesh panel (7) has an array of honeycomb holes in the middle position to conduct the sound emitted by the sound unit (6) to the outside of the speaker.

9. The integrated intelligent steering digital audio device according to claim 1, characterized in that, The sound unit mounting bracket (15) has a mounting hole (17) in the middle position for fixing the sound unit (6), and the sound unit (6) uses a full-range speaker.

10. The integrated intelligent steering digital audio device according to claim 9, characterized in that, The main housing connecting frame (14) has a movable hole (16) in the middle position. The diameter of the movable hole (16) is larger than the diameter of the tail end of the sound unit (6). The sound unit (6) does not come into contact with the main housing connecting frame (14) when it turns.

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