A rehabilitation and health management device

Abstract

The present invention discloses a rehabilitation and health management device, comprising a device housing, a front cover plate, a support base, a rotation drive mechanism and a cover plate drive mechanism; a circuit board is installed in the device housing, and a controller, a memory, a WiFi module, an HDMI interface circuit and a voice modem are arranged on the circuit board. The rehabilitation and health management device can realize video communication by using the cooperation of a camera, a voice modem, a speaker and a pickup, thereby enhancing the convenience of use for rehabilitation personnel; the cover plate drive mechanism drives the front cover plate to cover, so that the camera is covered when not in use, which can effectively protect the privacy of the user; the rotation drive mechanism can be used to adjust the orientation angle of the camera.

Description

Technical Field

[0001] The invention relates to a pension management device, in particular to a rehabilitation and health management device. Background Art

[0002] Elderly people living in cities often have few companions. Due to the influence of health, environment, climate, and the floor they live on, they often need to stay at home for a long time. Elderly people who stay at home for a long time often choose to watch TV, play with mobile phones or sit still. This kind of life is undoubtedly not good for their health. In addition, modern entertainment facilities are often not friendly to the elderly. Summary of the invention

[0003] Purpose of the invention: To provide a rehabilitation and health management device that can perform real-time voice recognition control, thereby effectively mobilizing the enthusiasm of the elderly to use it and enabling them to actively participate in rehabilitation exercises.

[0004] Technical solution: The rehabilitation and health management device of the present invention comprises a device housing, a front cover plate, a support base, a rotation drive mechanism and a cover plate drive mechanism; a circuit board is installed in the device housing, and a controller, a memory, a WiFi module, an HDMI interface circuit and a voice modem are arranged on the circuit board;

[0005] The rotary drive mechanism is installed on the support base, the bottom of the device housing is installed on the rotary drive mechanism, and the device housing is driven by the rotary drive mechanism to rotate relative to the support base; a pickup is arranged on the front side of the device housing; a top window is obliquely arranged on the top front side of the device housing, and a window closing plate is arranged in the top window; a camera is arranged in the middle of the window closing plate; the front cover plate is hingedly installed at the upper side of the top window, the cover plate driving mechanism is installed in the device housing, and the cover plate driving mechanism drives the front cover plate to cover the top window; a speaker is installed in the device housing through an internal bracket; an interface recess is arranged at the lower part of the rear side of the device housing, and an HDMI interface is arranged on the interface recess;

[0006] The controller is electrically connected to the memory, WiFi module, HDMI interface circuit and voice modem respectively; the HDMI interface circuit is electrically connected to the HDMI interface; the voice modem is electrically connected to the speaker and the pickup; the controller drives and controls the rotation drive mechanism and the cover drive mechanism respectively.

[0007] Furthermore, the rotary drive mechanism includes a rotary drive motor, a drive worm and a drive worm wheel; a center tube is vertically arranged at the center of the support base, and the drive worm wheel is fixedly installed on the center tube; a bottom support plate is fixedly installed at the bottom of the equipment housing, and a bottom support column is fixedly installed at the center of the bottom support plate; the lower end of the bottom support column is rotatably installed in the center tube; the drive worm is rotatably installed on the lower side surface of the bottom support plate through a worm support, and the drive worm is meshed with the drive worm wheel; the rotary drive motor is fixed on the lower side surface of the bottom support plate, and the output shaft end of the rotary drive motor is connected to the drive worm; a rotary drive circuit electrically connected to the controller is arranged on the circuit board, and the rotary drive circuit is electrically connected to the rotary drive motor.

[0008] Furthermore, the cover driving mechanism includes a cover driving motor, a driving connecting rod and a longitudinal crossbeam; a top support plate is arranged on the upper side of the interior of the equipment shell, the longitudinal crossbeam is longitudinally installed on the top support plate, and a T-shaped slide groove is longitudinally arranged on the longitudinal crossbeam; a T-shaped slide bar is slidably installed in the T-shaped slide groove; a driving rack extending out of the T-shaped slide groove is arranged on the T-shaped slide bar; a hinge groove is arranged on the front end of the T-shaped slide bar; a through hole is arranged on the window closing plate; one end of the driving connecting rod is swing-hingedly installed on the hinge groove, and the other end of the driving connecting rod is swing-hingedly installed on the inner side surface of the front cover plate; the cover driving motor is fixedly installed on the upper side of the interior of the equipment shell, and a driving gear meshing with the driving rack is fixedly arranged on the end of the output shaft of the cover driving motor; a cover driving circuit electrically connected to the controller is arranged on the circuit board, and the cover driving circuit is electrically connected to the cover driving motor.

[0009] Furthermore, a side hole is provided on the left and right sides of the T-shaped slide bar, and a support spring and a limiting marble are installed in the side hole, and the limiting marble partially protrudes out of the side hole, and the support spring elastically presses on the limiting marble; a cover opening positioning hole is provided on the left and right side groove edges of the T-shaped slide groove; after the front cover plate is fully opened, the support spring pushes the limiting marble to be partially embedded in the cover opening positioning hole.

[0010] Furthermore, an RJ45 interface is provided on the interface recess; an RJ45 interface circuit electrically connected to the controller is provided on the circuit board; and the RJ45 interface circuit is electrically connected to the RJ45 interface.

[0011] Furthermore, a USB interface is arranged on the interface recess; a USB interface circuit electrically connected to the controller is arranged on the circuit board; and the USB interface circuit is electrically connected to the USB interface.

[0012] Furthermore, an LED light strip is arranged around the bottom circumference of the device housing; an LED driving circuit electrically connected to the controller is arranged on the circuit board; and the LED driving circuit is electrically connected to the LED light strip.

[0013] Furthermore, an alarm button electrically connected to the controller is provided on the front side of the device housing.

[0014] Furthermore, a support frame and a snap-on elastic strip are provided on the inner side surface of the front cover plate; a snap-on protrusion is provided on the end of the snap-on elastic strip; a snap-on hole is provided on the window closing plate, and a snap-on depression is provided on the hole wall of the snap-on hole; when the front cover plate is closed on the top window, the support frame is supported on the window closing plate, the snap-on elastic strip is inserted into the snap-on hole at the corresponding position, and the snap-on protrusion is embedded in the snap-on depression.

[0015] Furthermore, the internal bracket includes a central column and a transverse support rod; the central column is vertically fixedly installed in the device housing, and the transverse support rod is transversely fixedly installed on the central column; the speaker is fixedly installed on the transverse support rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects: by utilizing the cooperation of the HDMI interface circuit and the HDMI interface, it can be connected to a display screen, thereby displaying an interface on the display screen, and setting daily life arrangements, such as: time to take medicine, type of medicine and quantity, etc.; by utilizing the cooperation of a camera, a voice modem, a speaker and a microphone, video communication can be realized, thereby enhancing the convenience of use for rehabilitation personnel; by utilizing a cover plate driving mechanism to drive the front cover plate to cover, the camera can be covered when not in use, which can effectively protect user privacy; and by utilizing a rotating driving mechanism, the orientation angle of the camera can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front structural schematic diagram of the present invention;

[0018] Figure 2 It is a front view structural schematic diagram of the present invention after opening the cover;

[0019] Figure 3 It is a rear view structural schematic diagram of the present invention after opening the cover;

[0020] Figure 4 It is a partial structural schematic diagram of the rotary drive mechanism of the present invention;

[0021] Figure 5 It is a partial structural schematic diagram of the cover plate driving mechanism of the present invention;

[0022] Figure 6 It is a schematic diagram of the circuit structure of the present invention. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0024] Embodiment 1:

[0025] like Figure 1-6 As shown, the rehabilitation and health management device of the present invention comprises: a device housing 1, a front cover plate 2, a support base 3, a rotation drive mechanism and a cover plate drive mechanism; a circuit board 36 is installed in the device housing 1, and a controller, a memory, a WiFi module, an HDMI interface circuit and a voice modem are arranged on the circuit board 36;

[0026] The rotary drive mechanism is installed on the support base 3, and the bottom of the device housing 1 is installed on the rotary drive mechanism, and the device housing 1 is driven by the rotary drive mechanism to rotate relative to the support base 3; a pickup 37 is arranged on the front side of the device housing 1; a top window is obliquely arranged on the top front side of the device housing 1, and a window closing plate 6 is arranged in the top window; a camera 8 is arranged in the middle of the window closing plate 6; the front cover plate 2 is hingedly installed at the upper side of the top window, and the cover plate driving mechanism is installed in the device housing 1, and the cover plate driving mechanism drives the front cover plate 2 to cover the top window; a speaker 29 is installed in the device housing 1 through an internal bracket; an interface recess 14 is arranged at the lower rear side of the device housing 1, and an HDMI interface 15 is arranged on the interface recess 14;

[0027] The controller is electrically connected to the memory, WiFi module, HDMI interface circuit and voice modem respectively; the HDMI interface circuit is electrically connected to the HDMI interface 15; the voice modem is electrically connected to the speaker 29 and the pickup 37; the controller drives and controls the rotation drive mechanism and the cover drive mechanism respectively.

[0028] By utilizing the cooperation of the HDMI interface circuit and the HDMI interface 15, it can be connected to a display screen, thereby displaying an interface on the display screen, and setting daily life arrangements, such as: time to take medicine, type of medicine and quantity, etc.; by utilizing the cooperation of the camera 8, voice modem, speaker 29 and microphone 37, video communication can be realized, thereby enhancing the convenience of use for rehabilitation personnel; the front cover 2 is driven to close by the cover drive mechanism, so that the camera 8 is covered when not in use, which can effectively protect the user's privacy; the rotation drive mechanism can adjust the orientation angle of the camera 8.

[0029] Furthermore, the rotary drive mechanism includes a rotary drive motor 34, a drive worm 35 and a drive worm wheel 31; a center tube 33 is vertically arranged at the center of the support base 3, and the drive worm wheel 31 is fixedly installed on the center tube 33; a bottom support plate 30 is fixedly installed at the bottom of the equipment housing 1, and a bottom support column 32 is fixedly arranged at the center of the bottom support plate 30; the lower end of the bottom support column 32 is rotatably installed in the center tube 33; the drive worm 35 is rotatably installed on the lower side surface of the bottom support plate 30 through a worm support, and the drive worm 35 is meshed with the drive worm wheel 31; the rotary drive motor 34 is fixed on the lower side surface of the bottom support plate 30, and the output shaft end of the rotary drive motor 34 is connected to the drive worm 35; a rotary drive circuit electrically connected to the controller is arranged on the circuit board 36, and the rotary drive circuit is electrically connected to the rotary drive motor 34. By utilizing the cooperation of the driving worm 35 and the driving worm wheel 31 , rotational driving and positioning can be achieved; by utilizing the rotational cooperation installation of the central tube 33 and the bottom support column 32 , the rotational installation of the equipment housing 1 and the support base 3 can be achieved.

[0030] Furthermore, the cover driving mechanism includes a cover driving motor 23, a driving connecting rod 25 and a longitudinal cross beam 19; a top support plate 18 is arranged on the upper side of the inside of the equipment housing 1, the longitudinal cross beam 19 is longitudinally installed on the top support plate 18, and a T-shaped slide 20 is longitudinally arranged on the longitudinal cross beam 19; a T-shaped slide bar 21 is slidably installed in the T-shaped slide 20; a driving rack 26 extending out of the T-shaped slide 20 is arranged on the T-shaped slide bar 21; a hinge notch 22 is arranged on the front end of the T-shaped slide bar 21; The closing plate 6 is provided with a through hole 10; one end of the driving link 25 is swingably hingedly mounted on the hinge notch 22, and the other end of the driving link 25 is swingably hingedly mounted on the inner side of the front cover 2; the cover driving motor 23 is fixedly mounted on the upper side of the inside of the device housing 1, and a driving gear 24 meshing with the driving rack 26 is fixedly arranged at the end of the output shaft of the cover driving motor 23; a cover driving circuit electrically connected to the controller is arranged on the circuit board 36, and the cover driving circuit is electrically connected to the cover driving motor 23. By using the cooperation of the T-shaped slide 20, the T-shaped slide bar 21, the driving rack 26 and the driving gear 24, the longitudinal movement of the lower end support point of the driving link 25 can be realized, thereby realizing the driving of the front cover 2.

[0031] Furthermore, a side hole is provided on both the left and right sides of the T-shaped slide bar 21, and a support spring and a limit marble 38 are installed in the side hole, and the limit marble 38 partially protrudes out of the side hole, and the support spring elastically presses on the limit marble 38; a cover opening positioning hole is provided on both the left and right side groove edges of the T-shaped slide groove 20; after the front cover plate 2 is fully opened, the support spring pushes the limit marble 38 to partially embed into the cover opening positioning hole. By using the cooperation of the limit marble 38 and the cover opening positioning hole, the front cover plate 2 can be positioned after it is fully opened, thereby ensuring that the front cover plate 2 can still be opened after the cover plate driving motor 23 is powered off.

[0032] Furthermore, an RJ45 interface 16 is provided on the interface recess 14; an RJ45 interface circuit electrically connected to the controller is provided on the circuit board 36; and the RJ45 interface circuit is electrically connected to the RJ45 interface 16. The RJ45 interface circuit and the RJ45 interface 16 are arranged in coordination to facilitate the device to access a wired network.

[0033] Furthermore, a USB interface 17 is provided on the interface recess 14; a USB interface circuit electrically connected to the controller is provided on the circuit board 36; and the USB interface circuit is electrically connected to the USB interface 17. The coordinated arrangement of the USB interface circuit and the USB interface 17 can facilitate the device to be connected to an external storage device or to achieve data communication.

[0034] Furthermore, an LED light strip 4 is arranged around the bottom circumference of the device housing 1; an LED driving circuit electrically connected to the controller is arranged on the circuit board 36; and the LED driving circuit is electrically connected to the LED light strip 4. By using the coordinated arrangement of the LED driving circuit and the LED light strip 4, the flashing control can be performed according to the control of the controller.

[0035] Furthermore, an alarm button 5 electrically connected to the controller is provided on the front side of the device housing 1. The alarm button 5 can facilitate the user to perform physical button-type alarm triggering.

[0036] Furthermore, a support frame 11 and a buckle elastic strip 12 are provided on the inner side of the front cover plate 2; a buckle protrusion 13 is provided on the end of the buckle elastic strip 12; a buckle hole 7 is provided on the window closing plate 6, and a buckle recess 9 is provided on the hole wall of the buckle hole 7; when the front cover plate 2 is closed on the top window, the support frame 11 is supported on the window closing plate 6, the buckle elastic strip 12 is inserted into the buckle hole 7 at the corresponding position, and the buckle protrusion 13 is embedded in the buckle recess 9. By using the buckle protrusion 13 on the buckle elastic strip 12 to cooperate with the buckle recess 9 on the buckle hole 7, the front cover plate 2 can be limited after closing, so as to ensure that the front cover plate 2 can be closed after the cover plate driving motor 23 is powered off.

[0037] Furthermore, the internal support includes a central column 27 and a transverse support rod 28; the central column 27 is vertically fixedly installed in the device housing 1, and the transverse support rod 28 is transversely fixedly installed on the central column 27; and the speaker 29 is fixedly installed on the transverse support rod 28. The cooperation of the central column 27 and the transverse support rod 28 can realize the distributed installation of multiple speakers 29.

[0038] In the rehabilitation and health management device described in the present invention, the controller adopts an existing controller module, such as an ARM controller module; the voice modem adopts an existing voice modem, and can cooperate with the speaker 29 and the microphone 37 to realize voice transmission and reception; the speaker 29 adopts an existing speaker for realizing voice broadcasting; the microphone 37 adopts an existing microphone for realizing voice collection; the LED drive circuit adopts an existing LED drive circuit for realizing drive control of the LED light strip 4; the memory adopts an existing memory for realizing data storage; the WiFi module adopts an existing WiFi module for realizing Internet access of the verification terminal; the USB interface circuit adopts an existing USB interface circuit for realizing the communication requirements of the USB interface 17; the RJ45 interface circuit adopts an existing RJ45 interface circuit for realizing the communication requirements of the RJ45 interface 16; the HDMI interface circuit adopts an existing HDMI interface circuit for realizing the communication requirements of the HDMI interface 15; the camera 8 adopts an existing camera for realizing video data collection; the rotation drive circuit and the cover drive circuit both adopt existing stepping motor drive circuits for respectively rotating the rotation drive motor 34 and the cover drive motor 23.

[0039] The rehabilitation and health management device of the present invention has the following functions when in use:

[0040] (1) One-button alarm function: In an emergency, when the user presses the alarm button 5, the one-button alarm function is triggered. At this time, the controller controls the WiFi module to send an emergency alarm message to the rehabilitation monitoring center. At the same time, the controller controls the LED light strip 4 to flash through the LED driving circuit. The user's voice communication is triggered at the same time, and voice interaction is carried out with the rehabilitation monitoring center through the microphone 37 and the speaker 29.

[0041] (2) Rehabilitation interaction function: Connect the HDMI interface 15 to the TV, and the device will display an interface on the TV screen. You can set daily life arrangements, such as the time, type and quantity of taking medicine; exercise time and suitable exercise types; when exercising, you can connect with other elderly people in the community, and practice square dancing and Tai Chi at home; you can also interact with others in real time; when the user needs special rehabilitation exercises, you can use the community interface to conduct video communication with professionals, who will provide evaluations and corresponding exercise guidance or demonstrations; after selecting a suitable rehabilitation exercise, the system will automatically generate and start at the corresponding time every day, and the user's participation in the exercise will be recorded accordingly, and the exercise duration and accuracy can be equivalent to corresponding points for the user to redeem and use; the software program involved in the above functions can use existing program modules.

[0042] (3) Video communication function: The device is controlled by voice control. The device recognizes the user's voice and obtains the control command. If video communication is required, the controller drives the cover drive motor 23 through the cover drive circuit to open the front cover 2 and start the camera 8. At this time, you can interact with the elderly in the community and related professionals. The controller can also control the rotation drive motor 34 to adjust the direction of the camera 8 according to the voice command, such as the voice control command of "turn left" or "turn right". When the camera 8 is not in use, the front cover 2 is covered to effectively protect privacy. It can also realize the supervision of the elderly. For example, when reminding the children to take medicine, the camera opening program can be executed on the children's client to watch the elderly take medicine. The software program involved in the above functions can use the existing program module.

[0043] The rehabilitation and health management device of the present invention is easy to operate, can realize life management of the elderly, interact in real time, and enrich the elderly's spare time; at the same time, it prevents the situation that empty-nest or single elderly people cannot be treated in time when accidents or other changes occur at home. It is simple to operate, low cost, and effectively improves the quality of life of elderly people at home.

[0044] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A rehabilitation and health management device, characterized in that: The device comprises a device housing (1), a front cover plate (2), a support base (3), a rotation drive mechanism and a cover plate drive mechanism; a circuit board (36) is installed in the device housing (1), and a controller, a memory, a WiFi module, an HDMI interface circuit and a voice modem are arranged on the circuit board (36); The rotary drive mechanism is mounted on the support base (3), the bottom of the device housing (1) is mounted on the rotary drive mechanism, and the rotary drive mechanism drives the device housing (1) to rotate relative to the support base (3); a pickup (37) is arranged on the front side of the device housing (1); a top window is obliquely arranged on the top front side of the device housing (1), and a window closing plate (6) is arranged in the top window; a camera (8) is arranged in the middle of the window closing plate (6); the front cover plate (2) is hingedly mounted on the upper side of the top window, the cover plate driving mechanism is mounted in the device housing (1), and the cover plate driving mechanism drives the front cover plate (2) to cover the top window; a speaker (29) is installed in the device housing (1) through an internal bracket; an interface recess (14) is arranged at the lower rear side of the device housing (1), and an HDMI interface (15) is arranged on the interface recess (14); The controller is electrically connected to the memory, the WiFi module, the HDMI interface circuit and the voice modem respectively; The HDMI interface circuit is electrically connected to the HDMI interface (15); the voice modem is electrically connected to the speaker (29) and the pickup (37); the controller drives and controls the rotation drive mechanism and the cover drive mechanism respectively; The cover driving mechanism comprises a cover driving motor (23), a driving connecting rod (25) and a longitudinal cross beam (19); a top support plate (18) is arranged on the upper side of the interior of the equipment housing (1), the longitudinal cross beam (19) is longitudinally mounted on the top support plate (18), and a T-shaped slide groove (20) is longitudinally arranged on the longitudinal cross beam (19); a T-shaped slide bar (21) is slidably mounted in the T-shaped slide groove (20); a driving rack (26) extending out of the T-shaped slide groove (20) is arranged on the T-shaped slide bar (21); a hinged notch (22) is arranged on the front end of the T-shaped slide bar (21); The closing plate (6) is provided with a through hole (10); one end of the driving connecting rod (25) is swingably hingedly mounted on the hinge notch (22), and the other end of the driving connecting rod (25) is swingably hingedly mounted on the inner side of the front cover plate (2); the cover plate driving motor (23) is fixedly mounted on the upper side of the inside of the device housing (1), and a driving gear (24) meshing with the driving rack (26) is fixedly arranged at the end of the output shaft of the cover plate driving motor (23); a cover plate driving circuit electrically connected to the controller is arranged on the circuit board (36), and the cover plate driving circuit is electrically connected to the cover plate driving motor (23); A side hole is provided on the left and right sides of the T-shaped slide bar (21), and a support spring and a limit marble (38) are installed in the side hole, and the limit marble (38) partially protrudes out of the side hole, and the support spring elastically presses on the limit marble (38); a cover opening positioning hole is provided on the left and right side groove edges of the T-shaped slide groove (20); after the front cover plate (2) is fully opened, the support spring pushes the limit marble (38) to partially embed into the cover opening positioning hole; A support frame (11) and a buckle elastic strip (12) are provided on the inner side surface of the front cover plate (2); a buckle protrusion (13) is provided on the end of the buckle elastic strip (12); a buckle hole (7) is provided on the window closing plate (6), and a buckle recess (9) is provided on the hole wall of the buckle hole (7); when the front cover plate (2) is covered on the top window, the support frame (11) is supported on the window closing plate (6), the buckle elastic strip (12) is inserted into the buckle hole (7) at the corresponding position, and the buckle protrusion (13) is embedded in the buckle recess (9).

2. The rehabilitation and health management equipment according to claim 1, characterized in that: The rotary drive mechanism comprises a rotary drive motor (34), a drive worm (35) and a drive worm wheel (31); a central tube (33) is vertically arranged at the center of the support base (3), and the drive worm wheel (31) is fixedly mounted on the central tube (33); a bottom support plate (30) is fixedly mounted at the bottom of the device housing (1), and a bottom support column (32) is fixedly arranged at the center of the bottom support plate (30); the lower end of the bottom support column (32) is rotatably mounted on the central tube (3 3); a driving worm (35) is rotatably mounted on the lower side of the bottom support plate (30) through a worm support, and the driving worm (35) is meshed with a driving worm wheel (31); a rotation drive motor (34) is fixed on the lower side of the bottom support plate (30), and the output shaft end of the rotation drive motor (34) is connected to the driving worm (35); a rotation drive circuit electrically connected to the controller is provided on the circuit board (36), and the rotation drive circuit is electrically connected to the rotation drive motor (34).

3. The rehabilitation and health management equipment according to claim 1, characterized in that: An RJ45 interface (16) is arranged on the interface recess (14); an RJ45 interface circuit electrically connected to the controller is arranged on the circuit board (36); and the RJ45 interface circuit is electrically connected to the RJ45 interface (16).

4. The rehabilitation and health management equipment according to claim 1, characterized in that: A USB interface (17) is arranged on the interface recess (14); a USB interface circuit electrically connected to the controller is arranged on the circuit board (36); and the USB interface circuit is electrically connected to the USB interface (17).

5. The rehabilitation and health management equipment according to claim 1, characterized in that: An LED light strip (4) is arranged around the bottom circumference of the device housing (1); an LED driving circuit electrically connected to the controller is arranged on the circuit board (36); and the LED driving circuit is electrically connected to the LED light strip (4).

6. The rehabilitation and health management equipment according to claim 1, characterized in that: An alarm button (5) electrically connected to the controller is arranged on the front side of the device housing (1).

7. The rehabilitation and health management equipment according to claim 1, characterized in that: The internal support comprises a central column (27) and a transverse support rod (28); the central column (27) is vertically fixedly installed in the device housing (1), and the transverse support rod (28) is transversely fixedly installed on the central column (27); and the speaker (29) is fixedly installed on the transverse support rod (28).

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