Rotary multi-surface advertising board

[0048] Example one

[0049] A rotating multi-sided billboard, combined figure 1 As shown, it includes a multi-faceted billboard 1, a center support rod 2, a support table 3, a driving mechanism 4, and a connecting shaft 11;

[0050] The supporting table 3 is located at the bottom of the rotating multi-faceted billboard and is used to form the base and support the upper structure. The central supporting rod 2 is installed on the supporting table 3, the driving mechanism 4 is arranged on the central supporting rod 2, and the connecting shaft 11 connects the driving mechanism 4 and the multifaceted Billboard 1, the driving mechanism 4 can drive the connecting shaft 11 to move up and down while rotating around the axis, thereby driving the multi-faceted billboard 1 to rotate in multiple directions;

[0051] The driving mechanism 4 includes a driving motor and a bearing shaft, the bearing shaft is connected to the connecting shaft 11 and the central support rod 2, and the driving motor is used to drive the bearing shaft to rotate in multiple directions;

[0052] The rotating multi-sided billboard is also provided with a control mechanism to control the working state of the multi-sided billboard 1 and the driving mechanism; the rotating multi-sided billboard is also equipped with a power supply mechanism to provide electrical energy for the multi-sided billboard 1, the driving mechanism 4 and the control mechanism ;

[0053] Preferably, the control mechanism is provided with a wireless transmission system for receiving and sending wireless signals, and controlling the display of the multi-faceted billboard 1 and the rotation direction and rotation speed of the driving mechanism 4 through the received external signals, thereby increasing the control method Flexibility

[0054] Preferably, the rotating multi-sided billboard is also provided with a setting mechanism, which is connected with the control mechanism to control the switch of the billboard. The staff can control the signal of the control mechanism by operating the setting mechanism. There are several setting knobs and setting switches, which can set the speed and direction of the electronic billboard.

[0055] Example two

[0056] Like the above-mentioned rotating multi-faceted billboard, this embodiment differs from it in that it combines figure 1 with figure 2 As shown, the driving mechanism 4 is provided with at least one energy collector 5 for collecting mechanical energy generated when the multi-faceted billboard 11 moves up and down. The energy collector 5 includes an outer frame 51 and an electric conversion assembly 52. ​​The outer frame 51 is provided with The connection component is used to install the energy harvester 5 on the driving mechanism 4. The electrical conversion component 52 includes at least one cantilever beam 521. The surface of the cantilever beam 521 is attached with piezoelectric material. The piezoelectric material vibrates back and forth. In this case, an electric charge can be generated. The cantilever beam 521 is located at the first mounting surface 511 of the outer frame 51 and is fixed on the frame edge of the outer frame 51. The first mounting surface 511 is a through structure and forms an area surrounded by the side walls of the outer frame 51 Through, it is convenient for the cantilever beam 521 to vibrate;

[0057] Preferably, the mounting method of the cantilever beam 521 and the first mounting surface 511 may be bonding, bonding, or integral molding, which is convenient for processing and production;

[0058] The electric conversion assembly 52 is also provided with a mass 53 which is mounted on the cantilever beam 521 and is located in the cavity formed by the outer frame 51. When vibration occurs from the outside, the mass fast 53 drives the cantilever beam 521 to vibrate in the direction of vibration. The piezoelectric material attached to the surface of the cantilever beam 521 reciprocates along the vibration direction, so that the positive and negative induced charges induced by the piezoelectric material along the two opposite surfaces of the vibration direction form a certain potential difference, thereby converting the mechanical energy of the vibration into Electric energy, easy to collect and store;

[0059] Preferably, the electric conversion assembly 52 includes four cantilever beams 521 to form a cross-shaped structure, and the mass 53 is installed at the center of the cross-shaped structure to facilitate resonance;

[0060] The two opposite surfaces of the cantilever beam 521 along the vibration direction are each provided with transmission electrodes for outputting the positive and negative induced charges induced by the piezoelectric material along the two opposite surfaces in the vibration direction. The rotating multi-sided billboard is also provided with at least one energy storage The energy storage device is connected to the transmission electrode of the energy storage through a transmission line, so that the positive and negative induced charges induced by the piezoelectric material along the two opposite surfaces of the vibration direction are transferred to the energy storage for storage and collection. The generated energy is partially recycled, and the mechanical energy generated by vibration is converted into electrical energy under the action of piezoelectric materials and stored in an energy storage device to save energy, achieve efficient and sustainable use of energy, and effectively reduce rotation. Energy waste caused by brand vibration;

[0061] Preferably, the energy storage device is connected to the billboard 1, the drive mechanism 4, and the control mechanism through a transmission line, and is used to provide electricity for the billboard 1, the drive mechanism 4, and the control mechanism, reducing the use of electrical energy for rotating the multi-faceted billboard , Saving costs;

[0062] Preferably, the energy storage device is detachably installed on the rotating multi-faceted billboard, and the energy storage device can be removed from the rotating multi-faceted billboard and used as a power source;

[0063] Preferably, the energy storage device is also provided with an indicator light or a buzzer. When the energy storage device is full, the indicator light is on or the buzzer sounds to remind the staff to replace the energy storage device;

[0064] The mechanism that the piezoelectric material converts vibrational mechanical energy into electrical energy is that the piezoelectric crystal has low symmetry. When deformed by an external force, the relative displacement of the positive and negative ions in the unit cell makes the positive and negative charge centers no longer overlap. It causes the crystal to undergo macroscopic polarization, and the surface charge density of the crystal is equal to the projection of the polarization intensity on the surface normal. Therefore, when the piezoelectric material is deformed under pressure, there will be different charges on both ends. Conversely, when a piezoelectric material is polarized in an electric field, it will deform due to the displacement of the charge center. Using these characteristics of piezoelectric materials can realize the mutual conversion of mechanical vibration (sound waves) and alternating current;

[0065] Preferably, the material of the transmission electrode of the piezoelectric material can be a metal material, or diamond or graphene material.

[0066] Example three

[0067] Like the above-mentioned rotating multi-faceted billboard, this embodiment differs from it in that it combines Figure 3 to Figure 8 As shown, the energy harvester further includes a frequency modulation structure 54 and at least one self-feedback structure 55 for adjusting the vibration frequency of the electric conversion component 52; the frequency modulation structure 54 is located at the second mounting surface 512 of the outer frame 51 and is fixedly installed on the outer frame 51 On the frame edge of the frame, the second mounting surface 512 and the first mounting surface 511 are respectively located on opposite sides of the side wall of the outer frame 51. The second mounting surface 512 is a through structure and penetrates the area surrounded by the side wall of the outer frame 51 , It is convenient for the frequency modulation structure 54 to generate resonance;

[0068] The FM structure 54 includes at least one FM cantilever beam 541 and a FM intersection 542. The FM cantilever beam 541 connects the FM junction 542 and the frame edge of the outer frame 51; a single self-feedback structure 55 corresponds to a single FM cantilever beam 541, and the self-feedback structure 55 is The half part is matched with the electric conversion component 52, and the lower part is matched with the frequency modulation structure 541 to adjust the resonance frequency of the electric conversion component 52, so that the resonance frequency of the electric conversion component 52 is close to the external vibration frequency, which improves the conversion of electric energy. effectiveness;

[0069] A number of FM units 543 are provided on the FM cantilever 541, and each FM unit 543 is arranged in sequence and in a single row on the FM cantilever 541 along the direction from the FM intersection 542 to the corresponding connection frame. The setting direction of the single FM unit 543 is flush. In the direction of the outer frame 51 where the frequency modulation unit 543 is connected, the resonant frequency of each frequency modulation unit 543 decreases from the direction away from the frequency modulation junction 542; the frequency modulation unit 543 includes a vibrating core 544 and a cavity, and the vibrating core 544 is arranged in the cavity. In the cavity area of ​​the chamber, activities can be carried out;

[0070] The end of the cavity facing the first mounting surface 511 is provided with an upper end opening 545, and the end of the cavity facing away from the first mounting surface 511 is provided with a lower end opening. The vibrating core 544 can move in the area defined by the upper end opening and the lower end opening. When the cantilever beam 541 resonates, the vibrating core 544 vibrates in the direction of vibration. The upper end of the vibrating core 544 can pass through the upper end opening 545, and the lower end of the vibration 544 can pass through the lower end opening; the vibrating core 544 is provided with at least one upper limit block 5441 and at least A lower limit block 5442 is used to limit the penetration length of the vibrating core 544;

[0071] By setting the parameters of the vibrating core 544, such as the mass, thickness, upper limit block, and lower limit block position, the natural resonant frequency of the frequency modulation unit 543 is adjusted, so that the resonant frequency of the frequency modulation unit 543 is sequentially reduced from the direction away from the frequency modulation junction 542 Smaller, the closer the FM unit 543 is to the FM junction 542, the greater the resonance frequency;

[0072] The self-feedback structure 55 includes a contact portion 551, which cooperates with the frequency modulation unit 543. The contact portion 551 includes a plurality of transverse teeth 552. The arrangement direction of a single transverse tooth 552 is flush with the outer frame at the connection of the corresponding frequency modulation suspension beam 541. 51 direction, a recess 553 is formed between two adjacent transverse teeth, and the maximum inter-tooth distance between two adjacent transverse teeth 552 along the direction from the FM intersection 542 to the frame of the corresponding connection is greater than The spacing between the vibrating cores 544 is such that the bottom of each recess 553 corresponds to at least three vibrating cores 544;

[0073] The self-feedback structure 55 also includes a first horizontal portion 554, a second horizontal portion 555, a first drop portion 556, a second drop portion 557, and a third drop portion 558. The self-feedback structure 55 has a question mark shape as a whole, and the first horizontal portion 554 , The first drop portion 556, and the second drop portion 557 form a semi-enclosing frame structure for enclosing the cantilever beam 521 to prevent the self-feedback structure 55 from separating from the cantilever beam 521, and the second horizontal portion 555 is used to connect the second drop portion 557 And the third drop portion 558, so that the third drop portion 557 corresponds to the position of the FM suspension beam 541, and the contact portion 551 is located at an end of the third drop portion 558 facing the FM suspension beam 541;

[0074] When vibration occurs from the outside and the frequency modulation unit 543 resonates, since the natural frequencies of the adjacent frequency modulation units 543 are different, the vibration amplitudes of the two adjacent vibration cores 544 are also different. The frequency modulation unit 543 whose frequency is closest to the external vibration frequency is different. The vibration amplitude of the vibration core 544 is the largest, and the exposed part is the most. The amplitude of the vibration core 544 on both sides of the largest vibration amplitude is gradually attenuated from the largest vibration amplitude to both sides. The closer the vibration amplitude is, the greater the vibration amplitude of the vibration core 544. Larger, the farther away from the vibration core 544, the smaller the vibration amplitude;

[0075] At the beginning of vibration, the contact end 551 of the self-feedback structure 55 needs to be located at the lowest point of the FM suspension beam 541;

[0076] In the state of vibration, the contact end 551 will be lifted up by the vibration core 544 with the largest vibration amplitude and the most exposed part. At this time, the contact end 554 is only subjected to the force of the vibration core 544 with the most exposed part, so that the contact end 551 gradually separates from the vibration amplitude. The smaller vibrating core 544 moves laterally to the vibrating core 544 with greater vibration amplitude, and finally moves to the top of the vibrating core 544 with the highest vibration amplitude in turn, and stays above the vibrating core 544 with the highest amplitude, thereby changing the self-feedback structure 55 and The contact position of the cantilever beam 521 changes the moment of the cantilever beam 521, thereby changing the natural frequency of the electric conversion component 52, so that the natural vibration frequency of the electric conversion component 52 is close. When the external vibration frequency does not communicate with the natural frequency of the electric conversion component 52 or When they are not close, under the interaction of the self-feedback structure 55 and the frequency modulation structure 54, the natural vibration frequency of the electric conversion component 52 is close to the external vibration frequency, which makes the conversion efficiency higher. At the same time, the structure is simple, easy to manufacture, and low in cost. .