Self-luminous wind chime system based on wind mechanical energy collection

Abstract

A self-luminous wind chime system based on wind power mechanical energy collection is characterized in that a hanging ring for hanging is arranged at the top of a fixed support, and a main shaft is vertically arranged in the fixed support and rotationally connected with the fixed support through a bearing; the fan blade assemblies are evenly distributed in the circumferential direction and fixedly connected to the periphery of the upper portion of the main shaft, the energy conversion module is fixedly installed in the fixing support and located on the lower portion of the main shaft, the energy conversion module comprises a piezoelectric ceramic piece or an electromagnetic coil, and the input end of the energy conversion module is in transmission connection with the main shaft; the energy storage unit is fixedly arranged at the bottom of the fixing support and electrically connected with the energy conversion module. The at least three fan blade assemblies are evenly distributed in the circumferential direction of the main shaft, each fan blade is composed of the connecting arm and the arc-shaped plate-shaped blade body, the windward side of each blade body faces the rotating front, all the curvature centers are located on the same horizontal circumference, and it is ensured that aerodynamic loads are distributed in a highly symmetrical mode in the rotating process; eccentric vibration and bearing abrasion are effectively restrained.

Description

Technical Field

[0001] This invention belongs to the field of wind chime energy harvesting technology, specifically a self-illuminating wind chime system based on wind power mechanical energy harvesting. Background Technology

[0002] Traditional wind chimes, as outdoor installations combining decorative and auditory aesthetics, are used in courtyards, balconies, and pergolas. They rely on natural wind to drive the suspended tubes to collide and produce sound, creating a tranquil and elegant atmosphere. However, traditional wind chimes only provide acoustic output and completely lose their visual appeal at night or in low-light environments, failing to meet modern users' demands for an all-weather aesthetic experience. To compensate for this deficiency, some existing products attempt to add LED lights to the wind chimes and provide nighttime illumination powered by batteries or solar panels. However, such solutions have the following technical problems: First, most existing devices use flat blades or simple curved blades, and their aerodynamic shape has not been optimized, resulting in insufficient starting torque. In typical urban light wind environments (wind speeds are often below 2 m / s), they are difficult to start or have too low a rotational speed, making it impossible to drive the subsequent power generation modules to work effectively. In addition, insufficient number of blades or asymmetrical layout can easily cause rotational imbalance, resulting in main shaft wobble, rapid bearing wear, and even structural loosening, which seriously affects long-term reliability.

[0003] Secondly, most existing wind chimes use a single electromagnetic or piezoelectric conversion method, which lacks the flexibility to adapt to different wind conditions. Although the electromagnetic solution has a high output power, it usually requires a gear speed-increasing mechanism to match the optimal speed of the generator, resulting in a complex structure, large size, and increased cost. While the piezoelectric solution has a simple structure, it generally relies on vortex-induced vibration or random flutter induced by external airflow as the excitation source. Its vibration frequency and amplitude are highly dependent on the Reynolds number and the stability of the incoming flow. In low wind speed or turbulent environments, the output is extremely unstable or even completely fails. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a self-illuminating wind chime system based on wind power mechanical energy harvesting, so as to at least partially solve the above-mentioned technical problems.

[0005] The technical solution adopted in this invention is as follows: This invention proposes a self-illuminating wind chime system based on wind power mechanical energy harvesting, comprising: A fixed bracket with a hanging ring at the top for suspension; The main shaft is vertically installed inside the fixed bracket and is rotatably connected to the fixed bracket via a bearing. At least three fan blade assemblies are evenly distributed circumferentially and fixedly connected to the upper outer periphery of the main shaft; An energy conversion module is fixedly installed in the fixed bracket and located at the lower part of the main shaft. The energy conversion module includes a piezoelectric ceramic sheet or an electromagnetic coil, and its input end is connected to the main shaft drive. The energy storage unit is fixedly mounted at the bottom of the fixed bracket and electrically connected to the energy conversion module; The light-emitting unit is embedded in the outer wall or bottom of the fixed bracket and is electrically connected to the energy storage unit; The main shaft, driven by wind power, drives the energy conversion module to generate electrical energy, which is then stored in the energy storage unit and used to power the light-emitting unit.

[0006] In one embodiment of the present invention, the wind turbine assembly includes a blade body and a connecting arm. One end of the connecting arm is fixedly connected to the outer peripheral surface of the main shaft, and the other end extends outward and is fixedly connected to the blade body. The blade body has an arc-shaped plate structure with its windward surface facing forward in the direction of rotation, and the curvature centers of each blade body are located on the same horizontal circumference.

[0007] In one embodiment of the present invention, the energy conversion module is an electromagnetic structure, including a permanent magnet rotor fixedly sleeved on the lower end of the main shaft, and a stator coil arranged circumferentially around the permanent magnet rotor; the stator coil is fixedly installed on a coil support provided on the inner wall of the fixed bracket, and a radial air gap is left between the permanent magnet rotor and the stator coil.

[0008] In one embodiment of the present invention, the energy conversion module is a piezoelectric structure, including an eccentric mass block fixed to the lower end of the main shaft and a piezoelectric ceramic sheet disposed on the inner side of the bottom of the fixed bracket; the eccentric mass block generates periodic vibration when the main shaft rotates, causing the piezoelectric ceramic sheet to deform and output electrical energy.

[0009] In one embodiment of the present invention, the energy storage unit includes a rechargeable battery and a rectifier and voltage regulator circuit board. The rectifier and voltage regulator circuit board is fixedly installed in the inner cavity at the bottom of the fixed bracket and is electrically connected to the output terminal of the energy conversion module and the rechargeable battery, respectively. The rechargeable battery is a lithium-ion button battery or a thin-film battery, and its outer contour is adapted to the inner cavity at the bottom of the fixed bracket.

[0010] In one embodiment of the present invention, the light-emitting unit includes a plurality of LED beads, which are embedded at circumferential intervals along the outer side wall of the fixed bracket. The pins of each LED bead pass through the wall of the fixed bracket and are electrically connected to the energy storage unit. The fixed bracket is provided with light-transmitting holes or transparent windows at the positions corresponding to the LED beads.

[0011] In one embodiment of the present invention, a sound-generating component is further included. The sound-generating component includes several metal tubes or glass tubes. The tubes are suspended below the bottom of the fixed bracket by flexible suspension ropes. The upper end of the flexible suspension rope is fixedly connected to a hanging lug provided on the bottom edge of the fixed bracket, and the lower end is connected to the top of the corresponding tube.

[0012] In one embodiment of the present invention, the fixed bracket includes an upper housing and a lower housing. The upper housing is cylindrical, with a closed top and a lifting ring, and an opening on the side wall for the fan blade assembly to pass through. The lower housing is a cylindrical structure with a closed bottom, and its top opening is connected to the lower end of the upper housing by threads or snaps. The main shaft passes through the connection between the upper housing and the lower housing, and rotates with the inner walls of the upper housing and the lower housing respectively through two sets of bearings.

[0013] In one embodiment of the present invention, the permanent magnet rotor includes a disc-shaped base and a plurality of permanent magnets evenly distributed along its circumference, wherein the permanent magnets alternately arrange N poles and S poles along the circumferential direction; the stator coil consists of three sets of windings, each set of windings is wound on an independent magnetic core, the three sets of magnetic cores are evenly distributed along the circumference and fixed to the coil support, and the axis of each magnetic core points to the central axis of the permanent magnet rotor.

[0014] In one embodiment of the present invention, the lower end of the main shaft is provided with a transmission cam or eccentric pin, which contacts and engages with the vibration component in the energy conversion module, so that when the main shaft rotates, the rotational motion is converted into reciprocating vibration through the transmission cam or eccentric pin, thereby driving the piezoelectric ceramic sheet to work.

[0015] The beneficial effects of the technical solution of this invention are as follows: This invention utilizes at least three blade assemblies evenly distributed circumferentially along the main axis. Each blade consists of a connecting arm and an arc-shaped plate-like blade body. The windward side of the blade body faces forward, and all curvature centers are located on the same horizontal circumference, ensuring a highly symmetrical distribution of aerodynamic loads during rotation and effectively suppressing eccentric vibration and bearing wear. Compared to flat or straight blades, this invention lowers the start-up threshold, enabling the system to continue operating in typical low-wind-speed scenarios such as urban balconies and courtyards, fundamentally expanding its application boundaries.

[0016] This invention supports both electromagnetic and piezoelectric energy conversion paths, which can be flexibly configured according to application scenarios. In electromagnetic mode, a multi-pole permanent magnet rotor is integrated at the lower end of the main shaft, which, together with the three-phase stator windings, forms a high-efficiency generator. The permanent magnets N and S are arranged alternately, and the stator core axes converge at the center, forming a short magnetic circuit, low leakage flux, and high coupling structure, achieving high power density output within a limited volume. In piezoelectric mode, an eccentric mass block or transmission cam / eccentric pin is set at the end of the main shaft to convert rotational motion into periodic reciprocating vibration, directly exciting the piezoelectric ceramic sheet.

[0017] The main shaft of this invention runs through the connecting interface and is supported by two sets of bearings on the inner walls of the upper and lower housings, forming a double-support span structure. This improves rotational stiffness and anti-overturning ability, and effectively suppresses swaying and noise caused by wind load fluctuations. All sensitive electronic components (such as rectifier and voltage regulator circuit boards and rechargeable batteries) are encapsulated in the bottom cavity of the lower housing. The battery shape matches the cavity contour, saving space and enhancing the overall structural integrity.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the module framework of the self-illuminating wind chime system based on wind power mechanical energy harvesting proposed in an embodiment of the present invention; Figure 2 This is a functional framework diagram of the first module of the self-illuminating wind chime system based on wind power mechanical energy harvesting proposed in an embodiment of the present invention; Figure 3 This is a functional framework diagram of the second module of the self-illuminating wind chime system based on wind power mechanical energy harvesting proposed in an embodiment of the present invention. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] A self-illuminating wind chime system based on wind power mechanical energy harvesting, according to an embodiment of the present invention, is described below with reference to the accompanying drawings.

[0022] like Figures 1 to 3 As shown, this embodiment of the invention provides a self-illuminating wind chime system based on wind power mechanical energy harvesting, comprising: A fixed bracket with a hanging ring at the top for suspension; The main shaft is vertically installed inside the fixed bracket and is rotatably connected to the fixed bracket via bearings. At least three fan blade assemblies are evenly distributed circumferentially and fixedly connected to the upper outer periphery of the main shaft; The energy conversion module is fixedly installed in the fixed bracket and located at the lower part of the spindle. The energy conversion module includes a piezoelectric ceramic sheet or an electromagnetic coil, and its input end is connected to the spindle drive. The energy storage unit is fixedly mounted at the bottom of the fixed bracket and electrically connected to the energy conversion module; The light-emitting unit is embedded in the outer wall or bottom of the fixed bracket and is electrically connected to the energy storage unit; The main shaft, driven by wind power, drives the energy conversion module to generate electricity, which is then stored in the energy storage unit and used to power the light-emitting unit.

[0023] In practical applications, when wind blows, the aerodynamic force acting on the fan blade assembly generates torque, driving the main shaft to rotate around its vertical axis. The main shaft is connected to a fixed bracket via two sets of bearings, achieving low-friction rotational connection, ensuring startup and continuous operation even in light wind conditions. At least three fan blade assemblies are uniformly distributed and fixedly connected to the upper outer circumference of the main shaft. The fan blade assemblies adopt a specific aerodynamic shape, enabling them to efficiently capture wind energy and convert it into stable rotational mechanical energy under wind force. The layout of the fan blade assemblies not only ensures dynamic balance during rotation, avoiding structural fatigue or increased noise due to eccentric vibration, but also optimizes wind energy capture efficiency, allowing the system to maintain an effective rotational speed even in low-wind environments.

[0024] The lower part of the spindle extends into the lower section of the fixed bracket and forms a direct mechanical transmission relationship with the energy conversion module. The energy conversion module is firmly installed inside the fixed bracket, located close to the lower end of the spindle, ensuring the shortest transmission path and minimal energy loss. Depending on the specific implementation, the energy conversion module can adopt two technical approaches: one is an electromagnetic structure, in which a permanent magnet rotor is fixedly installed at the lower end of the spindle, with stator coils arranged around it. The rotation of the spindle drives the permanent magnet to cut magnetic field lines, inducing an alternating electromotive force in the stator coils; the other is a piezoelectric structure, in which an eccentric mass block or transmission cam is provided at the lower end of the spindle. As the spindle rotates, the eccentric structure periodically impacts or presses the piezoelectric ceramic sheet fixed at the bottom of the bracket, causing it to undergo repeated deformation, thereby generating pulse voltages at its poles.

[0025] Regardless of the energy conversion mechanism used, the generated electrical energy is transmitted via wires to an energy storage unit located at the bottom of the fixed support. This energy storage unit integrates rectification, voltage regulation, and charge management circuits, converting the unstable AC or pulsed electrical energy output from the energy conversion module into DC power suitable for storage and charging the built-in rechargeable battery (such as a lithium-ion button cell or flexible thin-film battery). The stored electrical energy is then supplied to the light-emitting unit, which consists of multiple LED beads embedded in the outer wall or bottom edge of the fixed support and electrically connected to the energy storage unit via internal wiring. The fixed support has light-transmitting holes or is inlaid with transparent materials (such as acrylic or glass) at corresponding positions, allowing the light emitted by the LEDs to effectively pass through, creating a soft, continuous, or flickering self-illuminating effect at night.

[0026] In one specific embodiment, the wind turbine assembly includes a blade body and a connecting arm. One end of the connecting arm is fixedly connected to the outer circumferential surface of the main shaft, and the other end extends outward and is fixedly connected to the blade body. The blade body has an arc-shaped plate structure with its windward surface facing forward in the direction of rotation. The curvature centers of each blade body are located on the same horizontal circumference. The energy conversion module is an electromagnetic structure, including a permanent magnet rotor fixedly sleeved on the lower end of the main shaft and a stator coil arranged circumferentially around the permanent magnet rotor. The stator coil is fixedly installed on a coil support provided on the inner wall of the fixed bracket, and a radial air gap is left between the permanent magnet rotor and the stator coil.

[0027] In specific applications of this invention, when natural wind blows onto the self-illuminating wind chime system, it first acts on the blade body of the wind turbine assembly. Since the blade body is an arc-shaped plate structure with its windward surface facing forward in the direction of rotation, a pressure difference is generated when the wind flows over the blade surface, thereby forming a continuous and stable driving torque. The connecting arm, as a rigid force transmission component between the blade body and the main shaft, is firmly fixed at one end to the outer circumference of the main shaft, and the other end extends outward and is reliably connected to the root of the blade body, ensuring that the wind load can be efficiently and without lag transmitted to the main shaft. Three or more wind turbine assemblies are evenly distributed circumferentially along the main shaft, and the curvature centers of all blade bodies are strictly located on the same horizontal circumference. This not only ensures the high symmetry of mass distribution during rotation and effectively suppresses vibration and bearing wear caused by eccentricity, but also allows each blade to cut into the airflow at a similar angle of attack in any wind direction, improving low-wind-speed start-up performance and omnidirectional wind energy capture capability.

[0028] Driven by wind power, the main shaft begins to rotate smoothly around its vertical axis. The rotational motion is directly transmitted to the energy conversion module integrated at its lower end. In this embodiment, the energy conversion module is constructed using the principle of electromagnetic induction: a permanent magnet rotor is fixedly mounted at the lower end of the main shaft. The rotor is made of rare-earth permanent magnet material with high remanence and high coercivity, and the N and S poles are usually arranged alternately around the circumference in the form of multiple pole pairs. Around the outer circumference of the permanent magnet rotor, a dedicated coil support is provided on the inner wall of the fixed bracket, on which the stator coil is installed. The stator coil consists of multiple sets of windings, each set of windings is wound on a high-permeability magnetic core and is evenly distributed around the circumference, so that the closed magnetic circuit path is minimized and the magnetic resistance is minimized. A controlled radial air gap is maintained between the permanent magnet rotor and the stator coil, which avoids mechanical interference between the rotating and stationary parts and ensures that the magnetic flux can efficiently pass through the air gap and cut the coil conductor.

[0029] As the main shaft drives the permanent magnet rotor to rotate continuously, the alternating magnetic field it generates sweeps across the stator coils. According to Faraday's law of electromagnetic induction, an alternating electromotive force is induced inside the stator coils. Since the number of permanent magnet pole pairs and the number of winding phases are optimally matched, the generated voltage waveform has a high sine degree and a stable frequency-speed correspondence. Even in natural environments with large wind speed fluctuations, it can output relatively continuous electrical energy.

[0030] In one specific embodiment, the energy conversion module is a piezoelectric structure, including an eccentric mass block fixed to the lower end of the spindle and a piezoelectric ceramic sheet disposed on the inner side of the bottom of the fixed bracket; the eccentric mass block generates periodic vibration when the spindle rotates, causing the piezoelectric ceramic sheet to deform and output electrical energy; the energy storage unit includes a rechargeable battery and a rectifier and voltage regulator circuit board, which is fixedly installed in the inner cavity of the bottom of the fixed bracket and electrically connected to the output end of the energy conversion module and the rechargeable battery respectively; the rechargeable battery is a lithium-ion button battery or a thin-film battery, and its outer contour is adapted to the inner cavity of the bottom of the fixed bracket.

[0031] In a specific application of this invention, when natural wind acts on the wind chime system's blade assembly, the wind power drives the main shaft to rotate around its vertical axis. An eccentric mass block is fixedly installed at the lower end of the main shaft, with its center of mass offset from the rotation center line of the main shaft. During the continuous rotation of the main shaft, the eccentric mass block generates periodic inertial force due to centrifugal force, thereby exciting the entire main shaft system to undergo regular radial vibration or oscillation. A piezoelectric ceramic sheet, typically made of PZT (lead zirconate titanate) material with a high electromechanical coupling coefficient, is positioned close to the inner wall of the structure on the bottom inner side of the fixed support. It is fixedly installed in a cantilever beam, clamping, or stacking configuration, with its sensitive direction facing the vibration transmission path induced by the eccentric mass block. As the main shaft rotates, driving the eccentric mass block to move, the resulting alternating mechanical stress is transmitted to the piezoelectric ceramic sheet through the support structure, forcing its internal lattice to undergo periodic compression and stretching deformation. Based on the piezoelectric effect principle, the mechanical deformation generates an alternating potential difference between the two electrode surfaces of the piezoelectric ceramic sheet, thereby outputting a pulsed or approximately sinusoidal AC voltage signal. Since changes in wind speed directly modulate the spindle speed, thereby controlling the vibration frequency and amplitude, the output electrical energy of the piezoelectric ceramic sheet also dynamically responds to the environmental wind conditions.

[0032] A rectifier and voltage regulator circuit board is integrated into the inner cavity at the bottom of the fixed bracket. The circuit board is reliably connected to the output end of the piezoelectric ceramic sheet through flexible wires or printed circuits. The AC output is converted into unidirectional pulsating DC using a full-wave bridge rectifier. Next, the voltage fluctuation is smoothed by a capacitor filter network. Then, the voltage is adjusted to a range suitable for the rechargeable battery by a DC-DC buck or boost module (depending on the battery charging requirements). Finally, overcharge protection, trickle charging, and energy accumulation control are implemented through a power management chip to ensure that the weak and intermittent piezoelectric energy can be efficiently captured and safely stored.

[0033] In one specific embodiment, the light-emitting unit includes multiple LED beads, which are embedded circumferentially along the outer wall of the fixed bracket. The pins of each LED bead pass through the wall of the fixed bracket and are electrically connected to the energy storage unit. The fixed bracket is provided with light-transmitting holes or transparent windows at the positions corresponding to the LED beads. It also includes a sound-generating component, which includes several metal tubes or glass tubes. The tubes are suspended below the bottom of the fixed bracket by flexible suspension ropes. The upper end of the flexible suspension rope is fixedly connected to the hanging lugs provided on the bottom edge of the fixed bracket, and the lower end is connected to the top of the corresponding tube.

[0034] In practical applications of this invention, as the voltage of the energy storage unit gradually builds up and reaches the LED driving threshold, current begins to flow to the light-emitting unit. The light-emitting unit consists of multiple LED beads, which are embedded circumferentially along the outer wall of the fixed bracket to form a surrounding light strip layout. The positive and negative leads of each LED bead pass through pre-set through holes on the bracket wall and are welded or crimped to the internal wire network, ultimately connecting to the output terminal of the energy storage unit. To ensure efficient light transmission without affecting structural strength, the fixed bracket has light-transmitting holes at each LED installation position, or embeds transparent windows with high light transmittance (such as polycarbonate or tempered glass), which protects the LEDs from rainwater corrosion and allows the emitted light to diffuse softly, forming a uniform, continuous, or programmable flashing ring light effect at night.

[0035] Meanwhile, several metal or glass tubes of varying lengths serve as sound generators, each suspended from the support frame by flexible ropes. The upper ends of the ropes are securely tied to lugs distributed circumferentially around the bottom edge of the fixed support frame, while the lower ends connect to perforations or hanging rings at the top of each tube. This suspension method allows the tubes ample space to swing freely. When wind blows, it not only drives the upper fan blades to rotate and generate electricity but also causes the entire device to sway slightly, either directly pushing the tubes to collide with each other or causing them to strike the centrally suspended hammer (if present), thereby producing crisp, pleasant sounds of varying pitches.

[0036] In one specific embodiment, the fixed bracket includes an upper housing and a lower housing. The upper housing is cylindrical, with a closed top and a lifting ring, and an opening on the side wall for the fan blade assembly to pass through. The lower housing is a cylindrical structure with a closed bottom, and its top opening is connected to the lower end of the upper housing by threads or snaps. The main shaft passes through the connection between the upper and lower housings and rotates with the inner walls of the upper and lower housings through two sets of bearings. The permanent magnet rotor includes a disc-shaped base and multiple permanent magnets evenly distributed along its circumference. The permanent magnets alternately arrange N and S poles along the circumference. The stator coil consists of three sets of windings, each winding is wound on an independent magnetic core, and the three sets of magnetic cores are evenly distributed along the circumference and fixed to the coil bracket, with the axis of each magnetic core pointing to the central axis of the permanent magnet rotor.

[0037] In practical applications, the mounting bracket of this invention consists of an upper shell and a lower shell, both cylindrical in shape, forming a closed cavity with continuous internal space. The top of the upper shell is completely sealed, and a hanging ring is installed at the center of its top for suspending the entire system from eaves, balconies, or outdoor locations in courtyards. Its side walls have openings matching the number of fan blades, allowing the fan blade assembly to extend outwards from the shell and be fully exposed to the natural wind field, while the remaining parts are protected by the shell to prevent rainwater from directly intruding into the core structure. The bottom of the lower shell is sealed, forming the electrical and energy conversion chamber of the system. Its top opening is tightly connected to the lower end of the upper shell via a threaded or snap-fit ​​structure, ensuring both ease of assembly and overall sealing, effectively preventing the intrusion of rainwater, dust, and moisture.

[0038] The main shaft rotates within the upper housing via a set of bearings, while within the lower housing, it forms a second support point with the inner wall via another set of bearings, creating a typical double-support span structure. This dual-bearing layout significantly improves the main shaft's rotational accuracy and anti-tipping capability, maintaining stable operation with low vibration and low wear even under sudden wind changes or gusts, making it particularly suitable for continuous operation in long-term outdoor light wind environments. When the wind blows the exposed blades, the main shaft begins to rotate around its central axis, transferring mechanical energy to the energy conversion area located inside the lower housing. Power generation here utilizes the principle of efficient electromagnetic induction: a permanent magnet rotor is fixedly mounted at the lower end of the main shaft. The rotor consists of a non-magnetic but high-strength disc-shaped base with multiple high-performance permanent magnets evenly distributed circumferentially along its outer edge. These permanent magnets are arranged in an alternating N-pole and S-pole configuration, forming multiple pairs of magnetic poles.

[0039] A dedicated coil support is fixed on the inner wall of the lower housing around the outer periphery of the permanent magnet rotor. Three independent stator windings are installed on the support. Each winding is tightly wound on a high-permeability silicon steel or ferrite core. The three cores are evenly distributed along the circumference, and their axes point to the central axis of the permanent magnet rotor, thus forming a symmetrical three-phase or near-three-phase electromagnetic topology. This makes the induced electromotive force of each winding 120 degrees (or approximately) out of phase, resulting in an output waveform that is closer to a sine wave and has small voltage fluctuations, which is beneficial for subsequent rectification and energy storage.

[0040] In one specific implementation, a transmission cam or eccentric pin is provided at the lower end of the spindle. The transmission cam or eccentric pin contacts and engages with the vibration component in the energy conversion module, so that when the spindle rotates, the rotational motion is converted into reciprocating vibration through the transmission cam or eccentric pin, thereby driving the piezoelectric ceramic sheet to work.

[0041] In a specific application of this invention, when natural wind blows on the wind turbine assembly, the wind energy is first converted into rotational mechanical energy around the main shaft. Driven by the wind, the main shaft rotates continuously, periodically contacting and pushing the vibrating components (such as push rods, cantilever beam ends, or mass blocks) in the energy conversion module as it rotates synchronously with the main shaft. This efficiently converts the originally continuous rotational motion into high-frequency, directional reciprocating linear vibration. Whenever the highest point of the cam or the farthest end of the eccentric pin rotates to the contact position with the vibrating component, an instantaneous thrust is applied, forcing the piezoelectric ceramic sheet to deform. As the main shaft continues to rotate, the cam falls back or the eccentric pin moves away, and the piezoelectric sheet rebounds under its own elastic restoring force, completing a full loading-unloading cycle. This cycle repeats continuously. Each rotation of the main shaft triggers one or more precisely synchronized mechanical impacts (depending on the cam profile or the number of eccentric pins), keeping the piezoelectric ceramic sheet continuously under alternating stress, thereby stabilizing the output of pulsed electrical energy.

[0042] The generated electrical energy is led out from the piezoelectric ceramic electrode through wires and enters a rectifier and voltage regulator circuit fixed to the bottom of the bracket. After conditioning, it is stored in a miniature rechargeable battery. When the stored voltage reaches a threshold, it drives the LED beads embedded in the outer wall of the bracket to emit light. At the same time, the wind also causes the metal or glass tubes suspended below the bracket to collide with each other, producing a pleasant sound.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A self-illuminating wind chime system based on wind power mechanical energy harvesting, characterized in that, include: A fixed bracket with a hanging ring at the top for suspension; The main shaft is vertically installed inside the fixed bracket and is rotatably connected to the fixed bracket via a bearing. At least three fan blade assemblies are evenly distributed circumferentially and fixedly connected to the upper outer periphery of the main shaft; An energy conversion module is fixedly installed in the fixed bracket and located at the lower part of the main shaft. The energy conversion module includes a piezoelectric ceramic sheet or an electromagnetic coil, and its input end is connected to the main shaft drive. The energy storage unit is fixedly mounted at the bottom of the fixed bracket and electrically connected to the energy conversion module; The light-emitting unit is embedded in the outer wall or bottom of the fixed bracket and is electrically connected to the energy storage unit; The main shaft, driven by wind power, drives the energy conversion module to generate electrical energy, which is then stored in the energy storage unit and used to power the light-emitting unit.

2. The self-illuminating wind chime system based on wind power mechanical energy harvesting according to claim 1, characterized in that, The wind turbine assembly includes a blade body and a connecting arm. One end of the connecting arm is fixedly connected to the outer circumferential surface of the main shaft, and the other end extends outward and is fixedly connected to the blade body. The blade body has an arc-shaped plate structure with its windward surface facing forward in the direction of rotation, and the curvature centers of each blade body are located on the same horizontal circumference.

3. The self-illuminating wind chime system based on wind power mechanical energy harvesting according to claim 1, characterized in that, The energy conversion module is an electromagnetic structure, including a permanent magnet rotor fixedly sleeved on the lower end of the main shaft, and a stator coil arranged circumferentially around the permanent magnet rotor; the stator coil is fixedly installed on the coil support provided on the inner wall of the fixed bracket, and a radial air gap is left between the permanent magnet rotor and the stator coil.

4. The self-illuminating wind chime system based on wind power mechanical energy harvesting according to claim 1, characterized in that, The energy conversion module is a piezoelectric structure, including an eccentric mass block fixed to the lower end of the main shaft and a piezoelectric ceramic sheet disposed on the inner side of the bottom of the fixed bracket; the eccentric mass block generates periodic vibration when the main shaft rotates, causing the piezoelectric ceramic sheet to deform and output electrical energy.

5. The self-illuminating wind chime system based on wind power mechanical energy harvesting according to claim 1, characterized in that, The energy storage unit includes a rechargeable battery and a rectifier and voltage regulator circuit board. The rectifier and voltage regulator circuit board is fixedly installed in the inner cavity at the bottom of the fixed bracket and is electrically connected to the output terminal of the energy conversion module and the rechargeable battery, respectively. The rechargeable battery is a lithium-ion button battery or a thin-film battery, and its outline is adapted to the inner cavity at the bottom of the fixed bracket.

6. The self-illuminating wind chime system based on wind power mechanical energy harvesting according to claim 1, characterized in that, The light-emitting unit includes multiple LED beads, which are embedded circumferentially along the outer wall of the fixed bracket. The pins of each LED bead pass through the wall of the fixed bracket and are electrically connected to the energy storage unit. The fixed bracket is provided with light-transmitting holes or transparent windows at the positions corresponding to the LED beads.

7. The self-illuminating wind chime system based on wind power mechanical energy harvesting according to claim 1, characterized in that, It also includes a sound-generating component, which comprises several metal tubes or glass tubes. The tubes are suspended below the bottom of the fixed bracket by flexible ropes. The upper end of the flexible rope is fixedly connected to the lugs provided on the bottom edge of the fixed bracket, and the lower end is connected to the top of the corresponding tube.

8. The self-illuminating wind chime system based on wind power mechanical energy harvesting according to claim 1, characterized in that, The fixed bracket includes an upper housing and a lower housing. The upper housing is cylindrical, with a closed top and a lifting ring, and an opening on the side wall for the fan blade assembly to pass through. The lower housing is a cylindrical structure with a closed bottom, and its top opening is connected to the lower end of the upper housing by threads or snaps. The main shaft passes through the connection between the upper and lower housings and rotates with the inner walls of the upper and lower housings through two sets of bearings.

9. The self-illuminating wind chime system based on wind power mechanical energy harvesting according to claim 3, characterized in that, The permanent magnet rotor includes a disc-shaped base and a plurality of permanent magnets evenly distributed along its circumference. The permanent magnets alternately arrange N poles and S poles along the circumference. The stator coil consists of three sets of windings, each set of windings is wound on an independent magnetic core, the three sets of magnetic cores are evenly distributed along the circumference and fixed to the coil support, and the axis of each magnetic core points to the central axis of the permanent magnet rotor.

10. The self-illuminating wind chime system based on wind power mechanical energy harvesting according to claim 1, characterized in that, The lower end of the main shaft is provided with a transmission cam or eccentric pin. The transmission cam or eccentric pin is in contact with the vibration component in the energy conversion module, so that when the main shaft rotates, the rotational motion is converted into reciprocating vibration through the transmission cam or eccentric pin, thereby driving the piezoelectric ceramic sheet to work.

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