Piano mechanical structure interactive display device

Abstract

The utility model discloses an interactive display device for a piano mechanical structure, and relates to the technical field of music education. The device comprises a key model structure, a pedal interaction structure and an audio-video playing unit. The key model structure comprises keys, supporting pieces, ejector rods, hammers and strings, one ends of the keys are connected with one ends of the ejector rods, the other ends of the ejector rods are connected with the hammers, and the striking direction of the hammers faces the strings; the pedal interaction structure comprises a pedal and a treading sensing unit, the downward pressing direction of the pedal faces the other end of the key, and the treading sensing unit is used for sensing the treading action of the foot of the human body on the pedal; and the audio-video playing unit is connected with the treading sensing unit and is used for playing a piano internal structure display video. According to the utility model, the interactive experience can be improved, the learning interest and participation sense of audiences are enhanced, and the complex mechanical principle of the piano becomes easy to understand and memorize, so that the effects of music education and musical instrument display are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of music education, in particular to an interactive display device for a piano mechanical structure. Background Art

[0002] As one of the most widely used musical instruments, the piano's internal mechanical structure and sound-producing principles have high educational value for learners and audiences. In order to popularize music education, it is necessary to show the audience the internal structure and working principles of instruments such as the piano.

[0003] Traditional piano displays usually place the piano in a display area, followed by on-site explanations by professionals.

[0004] In this way, the audience can only observe the appearance of the piano and some of the key movements from the outside, but cannot deeply understand its internal working mechanism. Although the instructor can provide a lot of relevant information, this method is relatively passive and not very interactive. It is also affected by the instructor's professional level and the audience's acceptance. Utility Model Content

[0005] In response to the above-mentioned technical problems and defects, the purpose of the present invention is to provide an interactive display device for the mechanical structure of a piano, which can enhance the interactive experience, increase the audience's interest in learning and sense of participation, and make the complex mechanical principles of the piano easy to understand and remember, thereby improving the effect of music education and instrument display.

[0006] To achieve the above-mentioned objectives, the present invention provides an interactive display device for the mechanical structure of a piano, comprising a key model structure, a pedal interaction structure, and an audio-visual playback unit. The key model structure comprises a key, a support member, a push rod, a hammer, and strings, wherein one end of the key is connected to one end of the push rod, and the other end of the push rod is connected to the hammer, with the hammer striking the strings. The pedal interaction structure comprises a pedal and a stepping sensor unit, wherein the pedal is pressed downward toward the other end of the key, and the stepping sensor unit is used to sense the human foot stepping on the pedal. The audio-visual playback unit is connected to the stepping sensor unit and is used to play a video displaying the internal structure of the piano.

[0007] Among them, when the human body steps on the pedal interaction structure, the pedal interaction structure presses the key, one end of the key is pressed down, and the support part acts as a fulcrum of the lever. Through the principle of leverage, the other end of the key is lifted up, the top rod rises, and drives the hammer to hit the strings. At the same time, the pedal sensing unit detects the human body's stepping action and sends a sensing signal to the audio and video playback unit. The audio and video playback unit responds to the sensing signal and starts playing a video showing the internal structure of the piano.

[0008] With this embodiment, when the audience steps on the pedals, they can not only see the physical movement of the keys but also hear the sound of the hammers striking the strings. Through the synchronized video, they gain a deeper understanding of the piano's sound-producing principles and internal structure. This enhances the interactive experience, increases the audience's interest and sense of participation in learning, and makes the complex mechanical principles of the piano easier to understand and remember, thereby improving the effectiveness of music education and instrument demonstrations.

[0009] In some embodiments, the stepping sensing unit includes a distance sensor, which is arranged below the key and is used to detect the distance between the key and the floor.

[0010] By adopting this embodiment, an intelligent sensing mechanism can be realized, which not only improves the interactivity of the device and allows the audience to interact with the device through foot movements, but also ensures the accurate recognition of stepping movements through the setting of preset thresholds, thereby triggering corresponding piano key movements and audio and video playback, providing the audience with an intuitive, sensitive and educational interactive experience.

[0011] In some embodiments, the pedal sensing unit includes a touch sensor disposed below the key.

[0012] By adopting this embodiment, such a sensing mechanism not only improves the real-time and accuracy of the interactive experience, but also simplifies the detection process, ensures a synchronous response with the audience's stepping action, triggers the corresponding key action and audio and video playback, and enhances the educational and entertainment value of the display device.

[0013] In some embodiments, the stepping sensing unit includes a signal transmitter and a signal receiver, which are respectively located on both sides of the key, and the signal receiver is connected to the audio and video playback unit.

[0014] By adopting this embodiment, this stepping sensing mechanism based on the signal blocking principle not only realizes the accurate detection of the stepping action, but also, through linkage with the audio and video playback unit, can instantly trigger the multimedia display synchronized with the stepping action, providing the audience with a novel and educational interactive experience.

[0015] In some embodiments, the stepping sensing unit includes a signal transceiver and a signal reflector, which are respectively located on both sides of the key, and the signal transceiver is connected to the audio and video playback unit.

[0016] With this embodiment, the sensing mechanism based on the signal reflection principle not only provides a highly sensitive and accurate stepping detection method, but also enhances the immediacy and educational nature of the interactive experience through synchronization with multimedia presentations.

[0017] In some embodiments, the piano mechanical structure interactive display device further includes a transparent protective cover, in which the piano key model structure is located.

[0018] This design securely encloses the entire piano model structure, protecting the internal mechanical components from damage and extending the lifespan of the device. It also provides a clear viewing angle, allowing viewers to observe the interactions and movements of the keys, levers, jacks, hammers, and strings without interference. The use of a transparent shield ensures both the safety and educational value of the interactive display, allowing viewers to safely engage in the interactive experience without touching sensitive mechanical components, thereby enhancing the display's appeal and practicality.

[0019] In some embodiments, the piano mechanical structure interactive display device further includes a back panel, which is located behind the piano key model structure.

[0020] In this embodiment, the backboard not only provides stable support and protection for the device, ensuring a stable and safe display, but also restricts the viewer's field of view, preventing external distractions and focusing their attention on the piano model display and interactive experience. Furthermore, the backboard serves as a backdrop for multimedia presentations, enhancing the overall visual quality and improving the audience's immersion and experience.

[0021] In some embodiments, the back plate is a curved structure, and the key model structure is located on the concave side of the curved structure.

[0022] The curved structure of this embodiment enhances the richness and depth of sound, creating a more three-dimensional and uniform sound field, while also reducing echo and resonance, avoiding distortion and maintaining pure sound quality. This design not only enhances the listening experience but also complements the elegant lines of the piano model, achieving a perfect combination of aesthetics and functionality.

[0023] In some embodiments, the pedal interaction structure further includes a column and an elastic member, one end of the pedal is connected to the column, and the other end faces the piano key, and the elastic member is connected between the pedal and the floor.

[0024] With this structure, one end of the pedal is connected to the upright, while the other end faces the key, allowing the pedaling action to be directly transmitted to the key model. The addition of an elastic member between the pedal and the floor provides the necessary elasticity and restorative force. This not only ensures a good tactile feel and quick response when the pedal is stepped on, but also ensures that it returns to its original position quickly and smoothly after the pedal is released.

[0025] In some embodiments, the length of the key model structure is greater than 0.5 meters.

[0026] In this embodiment, this dimensioning ensures that the model is sufficiently large to provide a comprehensive and clear display. This length not only enables the model to realistically reproduce the working principles of the piano, but also allows the audience to clearly observe the operation of each component from different angles, enhancing the intuitiveness and educational value of the display.

[0027] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages

[0028] 1. When the audience presses the pedals, they not only see the physical movement of the keys but also hear the sound of the hammers striking the strings. Through the synchronized video, they gain a deeper understanding of the piano's sound-producing principles and internal structure. This enhances the interactive experience, increases the audience's interest and sense of participation, and makes the complex mechanical principles of the piano easier to understand and remember, thereby improving the effectiveness of music education and instrument display.

[0029] 2. The intelligent sensing mechanism not only enhances the interactivity of the device, allowing the audience to interact with it through foot movements, but also ensures accurate recognition of footsteps through the setting of preset thresholds, thereby triggering corresponding key movements and audio and video playback, providing the audience with an intuitive, sensitive and educational interactive experience.

[0030] 3. The larger size ensures the model is large enough to provide a comprehensive and clear display. This length not only allows the model to realistically reproduce the working principles of the piano, but also allows the audience to clearly observe the operation of each component from different angles, enhancing the intuitiveness and educational value of the display. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are incorporated into and constitute a part of the specification, illustrating embodiments of the present invention and, together with the specification, explaining the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0032] Figure 1 This is a structural diagram of an interactive display device for a piano mechanical structure according to an embodiment of the present utility model;

[0033] Figure 2 It is a side view of a piano key in an embodiment of the present utility model;

[0034] Figure 3 It is a side view of another piano key in an embodiment of the present utility model;

[0035] Figure 4It is a top view of a piano key in an embodiment of the present utility model;

[0036] Figure 5 It is a top view of another piano key in an embodiment of the present utility model;

[0037] Figure 6 This is a top view of a back plate in an embodiment of the present utility model;

[0038] Description of reference numerals:

[0039] 1. Key model structure; 2. Foot-pedal interaction structure; 3. Audio and video playback unit; 4. Backboard; 11. Keys; 12. Support members; 13. Top rods; 14. Hammers; 15. Strings; 21. Pedals; 22. Stepping sensing unit; 23. Columns; 24. Elastic member; 221. Distance sensor; 222. Touch sensor; 223. Signal transmitter; 224. Signal receiver; 225. Signal transceiver; 226. Signal reflector. DETAILED DESCRIPTION

[0040] The terms used in the following embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include plural expressions, unless there is a clear contrary indication in the context. It should also be understood that the term "or" used in the present invention refers to and includes any or all possible combinations of one or more listed items. In the following, the terms "first" and "second" are used only for descriptive purposes and are used to distinguish technical features, and cannot be understood as implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present invention, unless otherwise stated, the meaning of "multiple" is two or more.

[0041] It should also be noted that, unless otherwise expressly specified or limited, in the embodiments of the present invention, terms such as "disposed" and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium, or it can mean the internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The embodiments of the present invention are described in detail below.

[0042] The present invention provides an interactive display device for piano mechanical structure. Figure 1 As shown, it includes a keyboard model structure 1, a pedal interaction structure 2 and an audio and video playback unit 3.

[0043] Specifically, the key model structure 1 includes a key 11, a support 12, a top rod 13, a hammer 14 and a string 15. The support 12 is connected to the key 11, one end of the key 11 is connected to one end of the top rod 13, and the other end of the top rod 13 is connected to the hammer 14. The impact direction of the hammer 14 is toward the string 15.

[0044] The piano key model structure 1 can be used as an enlarged display. It is designed to magnify the internal mechanical structure of a real piano key, with a magnification factor ranging from 3 to 20 times. For example, 10 times is selected in this embodiment. This allows the audience to clearly observe the internal mechanical structure and movement of the piano keys, intuitively understanding the working principles of the piano. The piano key model structure 1 is made of a transparent material, such as acrylic, to facilitate the audience's observation of the internal structural details.

[0045] The pedal interaction structure 2 includes a pedal 21 and a pedal sensing unit 22 . The pedal 21 is pressed downward toward the other end of the key 11 . The pedal sensing unit 22 is used to sense the pedaling action of the human foot on the pedal 21 .

[0046] Specifically, the foot-operated interactive structure 2 serves as the interactive experience component and can be connected to the piano model structure 1. By stepping on the foot-operated interactive structure 2, the audience can simulate the action of pressing piano keys, thereby observing the movement of the piano key's internal mechanical structure. The foot-operated interactive structure 2 and the piano model structure 1 are connected by a mechanical transmission method to ensure the consistency, accuracy, and reliability of the movement.

[0047] The audio and video playback unit 3 is connected to the stepping sensor unit 22 and is used to play a video showing the internal structure of the piano.

[0048] Specifically, the audio and video playback unit 3 can serve as a multimedia display. When the audience steps on the interactive foot pedal structure 2, the display screen will synchronously play relevant animations or videos, showing the movement of the internal mechanical structure and the principle of sound generation when the keys are pressed. The audio and video playback unit 3 then plays the piano sound corresponding to the key movement, allowing the audience to more intuitively experience the effect of the key sound.

[0049] When a human body steps on the pedal interaction structure 2, the pedal interaction structure 2 presses the key 11, one end of the key 11 is pressed down, and the support member 12 acts as a fulcrum of the lever. Through the principle of leverage, the other end of the key 11 is lifted up, and the top rod 13 rises, driving the hammer 14 to hit the string 15. At the same time, the pedal sensing unit 22 detects the human body's pedaling action and sends a sensing signal to the audio and video playback unit 3. The audio and video playback unit 3 starts playing a video showing the internal structure of the piano in response to the sensing signal.

[0050] In this embodiment, when the audience steps on the pedal 21, they can not only see the physical movement of the keys, but also hear the sound produced by the hammers striking the strings. Through the synchronized video, they gain a deeper understanding of the piano's sound-producing principles and internal structure. This enhances the interactive experience, increases the audience's learning interest and sense of participation, and makes the complex mechanical principles of the piano easier to understand and remember, thereby improving the effectiveness of music education and instrument display.

[0051] In some embodiments, as Figure 2 As shown, the stepping sensing unit 22 includes a distance sensor 221, which is arranged below the key 11 and is used to detect the distance h between the key 11 and the floor.

[0052] This allows real-time monitoring of the distance h between the piano key 11 and the floor. When the pedal 21 is depressed, the distance h decreases. Once this distance h falls below a preset threshold, the distance sensor 221 detects a stepping motion. This intelligent sensing mechanism not only enhances the device's interactivity, allowing viewers to interact with the device through foot movements, but also ensures accurate recognition of stepping motions through the use of preset thresholds, thereby triggering the corresponding key 11 movement and video playback, providing viewers with an intuitive, sensitive, and educational interactive experience.

[0053] In some embodiments, as Figure 3 As shown, the stepping sensing unit 22 includes a touch sensor 222 , which is arranged below the key 11 .

[0054] This allows the instantaneous contact between pedal 21 and key 11 to be directly sensed. This design makes the device's detection of pedaling actions more sensitive and intuitive. Once the touch sensor 222 detects the contact of pedal 21, it is determined to be a pedaling action. This sensing mechanism not only improves the real-time and accuracy of the interactive experience, but also simplifies the detection process, ensuring a synchronized response with the audience's pedaling action, triggering the corresponding key 11 movement and audio and video playback, and enhancing the educational and entertainment value of the display device.

[0055] In some embodiments, as Figure 4 As shown, the stepping sensing unit 22 includes a signal transmitter 223 and a signal receiver 224 , which are respectively located on both sides of the key 11 , and the signal receiver 224 is connected to the audio and video playback unit 3 .

[0056] Specifically, signal transmitter 223 is responsible for emitting continuous detection signals, while signal receiver 224 is responsible for receiving these detection signals. When a viewer steps on pedal 21, pedal 21 is pressed downward, placing pedal 21 between signal transmitter 223 and signal receiver 224, thereby blocking the transmission path of the detection signal. Once signal receiver 224 detects that it has not received the detection signal (i.e., the signal is blocked), it determines that a stepping action has been detected on pedal 21. It then immediately sends a sensing signal to audio and video playback unit 3, which then begins playing the relevant animation or video.

[0057] This pedaling sensing mechanism based on the signal blocking principle not only realizes the accurate detection of the pedaling action, but also, through linkage with the audio and video playback unit 3, can instantly trigger the multimedia display synchronized with the pedaling action, providing the audience with a novel and educational interactive experience.

[0058] In some embodiments, as Figure 5 As shown, the stepping sensing unit 22 includes a signal transceiver 225 and a signal reflector 226 , which are respectively located on both sides of the key 11 . The signal transceiver 225 is connected to the audio and video playback unit 3 .

[0059] Specifically, the signal transceiver 225 is responsible for transmitting signals to the signal reflector 226 and receiving the signals reflected back by the signal reflector 226, and is connected to the audio and video playback unit 3. Under normal conditions, the signal emitted by the signal transceiver 225 will be reflected back by the signal reflector 226, forming a closed-loop signal transmission. When the audience steps on the pedal 21, the pedal 21 is pressed down between the signal transceiver 225 and the signal reflector 226, which will block the signal transmission path between the signal transceiver 225 and the signal reflector 226, causing the signal transceiver 225 to be unable to receive the reflected signal. Once the signal transceiver 225 detects an interruption in signal transmission, it determines that a stepping action has been detected, and immediately triggers the audio and video playback unit 3 to start playing a video showing the internal structure of the piano. This sensing mechanism based on the signal reflection principle not only provides a highly sensitive and accurate stepping detection method, but also enhances the immediacy and educational nature of the interactive experience through synchronization with multimedia presentations.

[0060] In some embodiments, the piano mechanical structure interactive display device further includes a transparent protective cover (not shown), and the piano key model structure 1 is located in the transparent protective cover.

[0061] This design securely encloses the entire keyboard model structure 1, protecting the internal mechanical components from damage and extending the device's lifespan. It also provides a clear viewing angle, allowing viewers to observe the interactions and movements of components such as the keys 11, levers, jacks 13, hammers 14, and strings 15 without interference. The use of a transparent shield ensures both the safety and educational value of the interactive display, allowing viewers to safely engage in the interactive experience without touching sensitive mechanical components, thereby enhancing the display's appeal and practicality.

[0062] In some embodiments, as Figure 6 As shown, the piano mechanical structure interactive display device also includes a back panel 4, which is located behind the key model structure 1.

[0063] Specifically, backboard 4 not only provides stable support and protection for the device of this embodiment, ensuring stability and safety during display, but also restricts the viewer's field of view, preventing external interference and allowing them to focus more on the display and interactive experience of the piano model. Furthermore, backboard 4 serves as a backdrop for multimedia presentations, enhancing the overall visual effect and improving the viewer's sense of immersion and experience.

[0064] In some embodiments, the back plate 4 is a curved structure, and the key model structure 1 is located on the concave side of the curved structure.

[0065] Specifically, the back panel 4 adopts a curved structural design with a concave side, and the key model structure 1 is precisely placed in the concave area of this curve. Such a layout not only provides a more visually concentrated and prominent display space for the piano model, but also the design of the curved back panel 4 helps to guide the audience's line of sight, enhance the three-dimensional sense and depth, and make the mechanical structure and movement of the piano more vivid and intuitive.

[0066] Furthermore, the curved structure enhances the richness and depth of sound, creating a more three-dimensional and uniform soundstage, while also reducing echo and resonance, preventing distortion and preserving the purity of the sound quality. The acoustically optimized curved design focuses the sound, making the piano's tone more concentrated and prominent. The design can be adjusted to suit the specific conditions of the exhibition space to adapt to different acoustic environments. This design not only enhances the listening experience but also complements the elegant lines of the piano model, achieving a perfect combination of beauty and functionality.

[0067] At the same time, the concave curved back panel 4 can also isolate external interference to a certain extent, providing the audience with a more focused and immersive viewing experience.

[0068] In some embodiments, the pedal interaction structure 2 further includes a column 23 and an elastic member 24 . One end of the pedal 21 is connected to the column 23 , and the other end faces the key 11 . The elastic member 24 is connected between the pedal 21 and the floor.

[0069] With this structure, one end of the pedal 21 is connected to the upright 23, while the other end faces the key 11, allowing the pedaling action to be directly transmitted to the model of the key 11. The addition of an elastic member 24, connected between the pedal 21 and the floor, provides the necessary elasticity and restoring force. This not only ensures a good tactile feel and responsiveness when stepped on, but also allows the pedal 21 to return to its original position quickly and smoothly after being released. Furthermore, the presence of the elastic member 24 helps absorb the impact force generated by stepping on the pedal, protecting the internal mechanical structure of the device and extending the service life of the entire interactive display.

[0070] In some embodiments, the length of the key model structure 1 is greater than 0.5 meters.

[0071] This dimensioning ensures that the keyboard model structure 1 is sufficiently large to provide a comprehensive and clear display. This length not only allows the keyboard model to realistically reproduce the workings of a piano, but also allows viewers to clearly observe the operation of each component from various angles, enhancing the intuitiveness and educational value of the display. Furthermore, the longer keyboard model structure facilitates the integration of interactive and multimedia displays, providing a richer and more in-depth interactive experience. This makes it suitable for display in venues such as science and technology museums, educational centers, or public exhibitions, attracting audiences of all ages to learn and explore the mysteries of the piano.

[0072] The piano mechanical structure interactive display device of this embodiment realizes an innovative display and education method through careful design. Its technical effects are reflected in the following aspects:

[0073] First, the installation utilizes a scaled-down piano model, allowing for clear visibility of the internal mechanical components, including the keys 11, levers, jacks 13, hammers 14, and strings 15. This magnified design not only enhances the viewer's observational experience but also, through the use of transparent materials, provides intuitive visual access, making the complex mechanical linkages easier to understand and learn.

[0074] Secondly, the foot-operated interactive structure 2 in this embodiment, including the pedal 21 and the pedaling sensing unit 22, allows the audience to interact with the device through actual pedaling movements. This physical interaction not only increases the fun of the display but also provides an immersive learning experience by simulating real piano playing movements.

[0075] Furthermore, the integrated audio and video playback unit 3 of this embodiment is connected to the pedal sensing unit 22, which can synchronously play a video demonstrating the internal structure of the piano when the audience steps on the pedal 21. This multimedia display not only enriches the audience's sensory experience, but also deepens their understanding of the piano's sound production principles through a combination of audio and video.

[0076] Furthermore, the signal transceiver 225 and signal reflector 226 technology employed in this embodiment provide a highly sensitive and accurate pedaling detection method. When the pedal 21 is pressed down, blocking the signal, multimedia content playback is triggered. This intelligent sensing mechanism ensures instant and smooth interaction.

[0077] This embodiment also includes a transparent shield and a curved back panel 4. The former protects the internal mechanical structure, while the latter optimizes the sound effect and provides a visually focused display. The curved structure of the back panel 4 helps reflect and focus the sound, enhancing the listening experience.

[0078] Finally, the size design of this embodiment (length of more than 0.5 meters) ensures the integrity of the display content and sufficient interactive space, making it suitable for use in various public exhibition venues, attracting audiences of different ages and backgrounds to explore and learn.

[0079] In summary, the technical effect of this embodiment lies in its high degree of intuitiveness, interactivity, multimedia integration and intelligent sensing, as well as the optimization of sound effects and display environment, which together create a piano display platform that is highly educational, highly participatory and rich in experience.

[0080] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An interactive display device for piano mechanical structure, characterized in that: include: A piano key model structure includes a piano key, a support member, a push rod, a hammer, and strings, wherein the support member is connected to the piano key, one end of the piano key is connected to one end of the push rod, and the other end of the push rod is connected to the hammer, and the hammer strikes the string. A pedal interaction structure includes a pedal and a pedal sensing unit, wherein the pedal is pressed downward toward the other end of the key, and the pedal sensing unit is used to sense the pedaling action of the human foot on the pedal; The audio and video playback unit is connected to the pedal sensing unit and is used to play a video showing the internal structure of the piano.

2. The piano mechanical structure interactive display device according to claim 1, characterized in that: The stepping sensing unit includes a distance sensor, which is arranged below the key and is used to detect the distance between the key and the floor.

3. The piano mechanical structure interactive display device according to claim 1, characterized in that: The stepping sensing unit includes a touch sensor, which is arranged below the key.

4. The piano mechanical structure interactive display device according to claim 1, characterized in that: The stepping sensing unit includes a signal transmitter and a signal receiver, which are respectively located on both sides of the key, and the signal receiver is connected to the audio and video playback unit.

5. The piano mechanical structure interactive display device according to claim 1, characterized in that: The stepping sensing unit includes a signal transceiver and a signal reflector, which are respectively located on both sides of the key. The signal transceiver is connected to the audio and video playback unit.

6. The piano mechanical structure interactive display device according to claim 1, characterized in that: It also includes a transparent protective cover, in which the key model structure is located.

7. The piano mechanical structure interactive display device according to claim 1, characterized in that: It also includes a back plate, which is located behind the key model structure.

8. The piano mechanical structure interactive display device according to claim 7, characterized in that: The back plate is a curved surface structure, and the key model structure is located on the concave side of the curved surface structure.

9. The piano mechanical structure interactive display device according to claim 1, characterized in that: The pedal interaction structure further includes a column and an elastic member. One end of the pedal is connected to the column, and the other end faces the piano key. The elastic member is connected between the pedal and the floor.

10. The piano mechanical structure interactive display device according to any one of claims 1 to 9, characterized in that: The length of the piano key model structure is more than 0.5 meters.

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