A type of LED acoustically transparent dome display screen for cinemas

Abstract

This application provides a cinema LED acoustically transparent dome display screen, including a mounting hemispherical dome. A speaker is embedded in the inner wall of the end of the mounting hemispherical dome. A hemispherical mounting frame is located inside the mounting hemispherical dome. Flexible LED screens are embedded in the outer wall of the hemispherical mounting frame. An electrical control box is fixed to the bottom outer wall of the mounting hemispherical dome. A wire bend is connected through one side of the outer wall of the electrical control box, with one end of the wire bend penetrating the interior of the mounting hemispherical dome. The end of the wire bend is connected through to the inner wall of the middle section of one side of the hemispherical mounting frame. This cinema LED acoustically transparent dome display screen forms a dome display screen by attaching the flexible LED screens to the hemispherical mounting frame. The dome display screen is rotated and installed inside the hemispherical dome, providing protection when the dome display screen is not in use. A speaker is installed on the inner wall of the end of the mounting hemispherical dome, which acts as a sound amplification cover during audio playback.

Description

Technical Field

[0001] This invention relates to the field of dome display technology, and more specifically, to an LED acoustically transparent dome display for cinemas. Background Technology

[0002] A dome screen is a special type of screen that uses a spherical or hemispherical shape as its display medium. It achieves a 360° surround visual presentation through curved surface display technology or projection technology, providing an immersive experience for viewers. Its core feature is breaking the limitations of traditional flat screens and adapting to multi-angle viewing needs. It is constructed by splicing flexible or small-pitch LED modules into a sphere, requiring solutions to the problems of curvature fitting and pixel arrangement. Common types include: Inner dome screen: viewers enter the interior of the sphere to view (such as the dome theater of a planetarium), with images projected or displayed on the internal curved surface; Outer dome screen: images are displayed on the outside of the sphere (such as outdoor advertising dome screens), usually composed of multiple curved surface modules; Hemispherical screen: commonly found in digital planetariums and immersive exhibitions, combined with projection or LED technology. (Patent: CN CN 222629954) A U-shaped immersive full-view LED dome display screen is disclosed, including a base, with the dome display screen body mounted on the top of the base via a protective mechanism. The protective mechanism includes side plates, dampers, fixing blocks, springs, arc-shaped clamps, a first slide rail, a first slider, ball bearings, and connecting rods. There are two side plates, and the dampers are fixedly connected to the opposite side of the two side plates. The end of the damper away from the side plate is fixedly connected to the fixing block. The springs are sleeved on the outside of the dampers. Through the cooperation between the side plates, dampers, fixing blocks, springs, arc-shaped clamps, first slide rail, first slider, ball bearings, and connecting rods, the vibration of the dome display screen body during transportation is reduced, thereby improving the safety of the device during transportation.

[0003] However, the existing dome display screen structure technology is relatively simple. Most hemispherical displays are fixed structures and do not have the function of being rotated and stored when idle. Furthermore, dome displays do not have the ability to automatically remove dust from the LED display screen and the gaps between the display screens when idle. The speaker design on the traditional dome display screen structure is not reasonable enough, and the broadcast audio cannot surround the dome display screen, affecting the audio playback effect of the dome display screen.

[0004] Therefore, it is meaningful for us to make improvements and propose an LED acoustically transparent dome display screen for cinemas. Summary of the Invention

[0005] The purpose of this invention is to address the problems raised in the current background art.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0007] An LED acoustically transparent dome display screen for cinemas is proposed to improve the above-mentioned problems.

[0008] The application is as follows:

[0009] The device includes a hemispherical enclosure, with a speaker embedded in the inner wall of one end of the enclosure. A hemispherical mounting frame is located inside the enclosure, and flexible LED screens are embedded in the outer wall of the mounting frame. An electrical control box is fixed to the bottom outer wall of the enclosure. A wire bend is connected through one side of the control box's outer wall, with one end of the bend penetrating the interior of the hemispherical enclosure. The end of the wire bend is connected through to the inner wall of one side of the hemispherical mounting frame, where a first bearing is embedded. A display circuit board is located inside the hemispherical mounting frame. A first lug is fitted and fixed to the outer wall of the end of the wire bend, with its bottom fixed to the outer wall of the top side of the display circuit board. A diaphragm cover assembly is located on one side of the outer wall of the hemispherical mounting frame. A flip-up heat dissipation drive assembly is located at the connection between the hemispherical mounting frame and the inner wall of the hemispherical enclosure.

[0010] As a preferred technical solution of this application, the diaphragm cover assembly includes a stepped groove formed on the inner wall of the flat end of the hemispherical mounting bracket, a first internal thread is formed on the inner wall of the stepped groove, a mounting ring is installed inside the stepped groove, and a first external thread is formed on the outer wall of the mounting ring, and a rubber diaphragm is covered and connected to the top inner wall of the mounting ring.

[0011] As a preferred technical solution of this application, the flip-down heat dissipation drive assembly includes a turbine disk embedded and fixed on the outer wall of one side of the mounting hemispherical cover. A rotating tube is rotatably mounted on the inner wall of the middle part of the turbine disk. An impeller is fitted and fixed on the outer wall of one end of the rotating tube inside the turbine disk. A first bevel gear is fitted and fixed on the outer wall of one end of the rotating tube outside the turbine disk. A mounting base is fixed on one side of the outer wall of the turbine disk. A servo motor is embedded and mounted on one side of the outer wall of the mounting base. A second bevel gear is fixed to one end of the drive shaft of the servo motor. The second bevel gear and the first bevel gear are meshed and connected. One end of the rotating tube is connected through and through the inner wall of the middle part of the other side of the hemispherical mounting bracket. A one-way bearing is embedded in the rotating tube. A second lug is fitted on the outer wall of the end of the rotating tube, and a second bearing is embedded at the connection between the rotating tube and the second lug. The bottom end of the second lug is fixed to the outer wall of the top of the display circuit board. An air intake filter is connected through the bottom outer wall of the turbine disk. An air supply bend is connected through the outer wall of one side of the turbine disk. The air supply bend and the end of the rotating tube are rotatably connected, and a rotating sleeve joint is provided at the rotatable connection. A ratchet is fitted and fixed on the outer wall of the end of the wire bend. A pawl is fixed on the inner wall of one side of the hemispherical mounting bracket, and one end of the pawl is inserted into the tooth groove of the ratchet. Dust removal components for the idle display screen are provided on the inner walls of both sides of the mounting hemispherical cover.

[0012] As a preferred technical solution of this application, heat dissipation vents are distributed and opened through one side of the outer wall of the electrical control box.

[0013] As a preferred technical solution of this application, a power data line is electrically connected between the electrical control box and the display circuit board, and the power data line passes through a wire bend. A data cable is electrically connected between the display circuit board and the LED flexible screen, and the data cable is a spring telescopic wire.

[0014] As a preferred technical solution of this application, the idle display screen dust removal assembly includes a three-way valve that passes through the outer wall of the end of the wire bend. One end of the three-way valve is connected to an air blowing pipe, and one end of the air blowing pipe passes through the interior of the mounting hemispherical cover. A dust suction hole is opened on the inner wall of the bottom side of the mounting hemispherical cover. A dust suction pipe is connected through the bottom outer wall of the dust suction hole. A dust collection cylinder is connected through the end of the dust suction pipe. A second internal thread is opened on the top inner wall of the dust collection cylinder. A connecting ring is fitted and fixed on the outer wall of the end of the suction filter element, and a second external thread is opened on the outer wall of the connecting ring.

[0015] As a preferred technical solution of this application, sound-absorbing cotton is attached and fixed to the inner wall of the end of the mounting hemispherical cover, and the outer wall of the LED flexible screen is in contact with the sound-absorbing cotton.

[0016] As a preferred technical solution of this application, a stepper motor is embedded and fixed on the top outer wall of the electrical control box, and a mounting plate is fixed on the top of the output shaft of the stepper motor, and mounting screw holes are distributed on the four corners of the top outer wall of the mounting plate.

[0017] As a preferred technical solution of this application, friction blocks are distributed on the outer walls of the top two sides of the mounting ring.

[0018] As a preferred technical solution of this application, the suction hole is funnel-shaped and the suction pipe is a telescopic pipe.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] In the scheme of this application:

[0021] This cinema uses an LED acoustically transparent dome display screen, which is constructed by attaching a flexible LED screen to a hemispherical mounting frame. The dome display screen is then rotated and installed inside a hemispherical dome. Speakers are installed on the inner wall of the end of the hemispherical dome. During audio playback, the hemispherical dome acts as a sound amplification enclosure. When video is played through the dome display screen, the audio played by the speakers is broadcast from the gap between the hemispherical dome and the dome display screen, and the broadcast audio surrounds the dome display screen, improving the audio playback effect of the LED acoustically transparent dome display screen. When the dome display screen is not in use, the hemispherical mounting frame can be rotated to store the flexible LED screen inside the hemispherical dome, which serves as a protection function for the dome display screen when not in use.

[0022] By setting up the diaphragm cover assembly, the display circuit board is integrated and installed in the hemispherical mounting frame. By screwing on the mounting ring and the rubber diaphragm structure, the encapsulation within the hemispherical mounting frame is achieved. Later, the rubber diaphragm end cap structure can be screwed off, which is convenient for the maintenance of the circuit inside the dome display screen. During the use of the LED acoustically transparent dome display screen, when the audio played by the speaker is broadcast from the gap between the mounting hemispherical cover and the dome display screen, the rubber diaphragm is located on one side of the speaker. During the audio playback, the rubber diaphragm on the coaxial line will vibrate accordingly, thereby enhancing the low-frequency response of the dome display screen's audio playback, reducing resonance interference of the audio inside the mounting hemispherical cover, and improving the audio playback effect of the LED acoustically transparent dome display screen.

[0023] By setting up the flip-type heat dissipation drive component, the servo motor can be controlled to rotate forward in steps, driving the hemispherical mounting bracket to flip, thereby moving the LED flexible screen out of or into the mounting hemispherical cover, providing dust protection for the LED flexible screen; the servo motor can also be controlled to rotate continuously in reverse, driving the impeller to rotate within the turbine disk through the transmission tube. The centrifugal force generated by the impeller rotation draws in external air through the air intake filter. The drawn compressed air is then input into the hemispherical mounting bracket through the air supply bend, rotating sleeve joint, and rotating tube, serving as a cooling system for the dome screen display. The compressed air input into the hemispherical mounting bracket is discharged through the wire bend and input into the electrical control box, serving as a cooling system for the power and data cables passing through the wire bend and the electrical control box.

[0024] By incorporating a dust removal component for the idle LED dome screen, the flexible LED screen is housed inside the mounting hemispherical housing during the idle period. The dust collection cylinder 135 is screwed onto the connecting ring at the end of the suction filter. While the servo motor continuously rotates in reverse to dissipate heat from the dome screen, compressed air input into the hemispherical mounting frame is output through a bend in the wire. Adjusting the three-way valve allows the compressed air to be blown out through the air pipe inside the mounting hemispherical housing. This compressed air then blows dust from the flexible LED screen housed within the housing. During this process, the speaker plays a vibration frequency, and the resulting sound waves act on the gaps between the LED flexible screen panels, facilitating dust removal from these gaps. During suction, the suction filter draws dust through the dust collection cylinder and suction pipe at the suction holes, collecting the dust blown out of the mounting hemispherical housing. In summary, this provides the cinema LED dome screen with a dust removal function during idle periods. Attached Figure Description

[0025] Figure 1 A schematic diagram of the overall three-dimensional structure of the LED acoustically transparent dome display screen for cinemas provided in this application;

[0026] Figure 2 A three-dimensional structural diagram of the hemispherical dome installed in the LED acoustically transparent dome display screen for cinemas provided in this application;

[0027] Figure 3 for Figure 1 Enlarged view of the structure of region A in the middle;

[0028] Figure 4 for Figure 1 Enlarged view of the structure of region B in the middle;

[0029] Figure 5 A three-dimensional cross-sectional schematic diagram of the turbine disk in the LED acoustically transparent dome display screen for cinemas provided in this application;

[0030] Figure 6 for Figure 1 Enlarged view of the structure of region C in the middle;

[0031] Figure 7 for Figure 2 Enlarged view of the structure of region D in the middle.

[0032] The image shows:

[0033] 1. Hemispherical cover; 2. Speaker; 3. Hemispherical mounting bracket; 4. Flexible LED screen; 5. Electrical control box; 6. Wire bend; 7. First bearing; 8. Display circuit board; 9. First ear block; 10. Diaphragm cover assembly; 11. Flip-over heat dissipation drive assembly; 12. Heat dissipation vent; 13. Dust removal assembly for idle display screen; 14. Sound-absorbing cotton; 15. Stepper motor; 16. Mounting plate; 17. Mounting screw holes; 18. Data cable; 19. Friction block;

[0034] 101. Stepped groove; 102. First internal thread; 103. Mounting ring; 104. First external thread; 105. Rubber diaphragm;

[0035] 111. Turbine disk; 112. Rotating tube; 113. Impeller; 114. First bevel gear; 115. Mounting base; 116. Servo motor; 117. Second bevel gear; 118. One-way bearing; 119. Second lug; 1110. Second bearing; 1111. Intake filter element; 1112. Air delivery bend; 1113. Rotary sleeve joint; 1114. Ratchet; 1115. Pawl;

[0036] 131. Three-way valve; 132. Air blowing pipe; 133. Dust suction hole; 134. Dust suction pipe; 135. Dust collection cylinder; 136. Second internal thread; 137. Connecting ring; 138. Second external thread. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention.

[0038] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0039] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] The following is in conjunction with the appendix Figure 1-7 The present invention is further illustrated by the embodiments:

[0043] In this embodiment, as Figure 1-7 As shown, a cinema LED acoustically transparent dome display screen includes a mounting hemispherical dome 1, a speaker 2 embedded in the inner wall of the end of the mounting hemispherical dome 1, a hemispherical mounting frame 3 disposed inside the mounting hemispherical dome 1, LED flexible screens 4 embedded in the outer wall of the hemispherical mounting frame 3, an electrical control box 5 fixed to the bottom outer wall of the mounting hemispherical dome 1, a wire bend 6 penetrating through one side outer wall of the electrical control box 5, one end of the wire bend 6 penetrating inside the mounting hemispherical dome 1, the end of the wire bend 6 penetrating through the middle inner wall of one side of the hemispherical mounting frame 3, and a first bearing 7 embedded at the penetrating connection, a display circuit board 8 disposed inside the hemispherical mounting frame 3, a first ear block 9 fitted and fixed to the outer wall of the end of the wire bend 6, the bottom end of the first ear block 9 fixed to the top outer wall of one side of the display circuit board 8, a diaphragm cover assembly 10 disposed on one side outer wall of the hemispherical mounting frame 3, and the hemispherical mounting frame 3 and A flip-up heat dissipation drive assembly 11 is provided at the connection point of the inner wall on one side of the hemispherical dome 1. This cinema LED acoustically transparent dome display screen is formed by attaching the flexible LED screen 4 to the hemispherical mounting frame 3 to form a dome display screen. The dome display screen is rotated and installed inside the hemispherical dome 1, and a speaker 2 is installed on the inner wall of the end of the hemispherical dome 1. The hemispherical dome 1 acts as a sound amplification cover during audio playback. When the hemispherical mounting frame 3 is rotated so that the flexible LED screen 4 is placed outside the hemispherical dome 1, the audio played by the speaker 2 is broadcast from the gap between the hemispherical dome 1 and the dome display screen during video playback. The broadcast audio surrounds the dome display screen, improving the audio playback effect of the LED acoustically transparent dome display screen. When the dome display screen is not in use, the hemispherical mounting frame 3 can be rotated to store the flexible LED screen 4 inside the hemispherical dome 1, which serves as a protection function for the dome display screen when not in use.

[0044] Furthermore, a stepper motor 15 is embedded and fixed on the top outer wall of the electrical control box 5. A mounting plate 16 is fixed to the top of the output shaft of the stepper motor 15, and mounting screw holes 17 are distributed on the four corners of the top outer wall of the mounting plate 16. The LED acoustic dome display screen for cinemas is hoisted and installed by using the mounting screw holes 17 on the mounting plate 16 and expansion bolts. During hoisting and use, the stepper motor 15 can be controlled to work and drive the dome display screen structure below the electrical control box 5 to rotate step by step, so as to realize the 360° adjustment of the display direction of the dome display screen.

[0045] In this embodiment, refer to Figure 1 , Figure 3 and Figure 6 The diaphragm cover assembly 10 includes a stepped groove 101 formed on the inner wall of the flat end of the hemispherical mounting frame 3. A first internal thread 102 is formed on the inner wall of the stepped groove 101. A mounting ring 103 is installed inside the stepped groove 101, and a first external thread 104 is formed on the outer wall of the mounting ring 103. A rubber diaphragm 105 is covered and connected to the top inner wall of the mounting ring 103. The LED acoustically transparent dome display screen integrates the display circuit board 8 into the hemispherical mounting frame 3. Then, with the cooperation of the first external thread 104 and the first internal thread 102, the mounting ring 103 is screwed onto the stepped groove 101 of the hemispherical mounting frame 3 to realize the mounting ring... The rubber diaphragm 105 encapsulates the hemispherical mounting bracket 3. The end cap of the rubber diaphragm 105 can be unscrewed and removed later, which is beneficial for the maintenance of the circuit inside the dome screen. During the use of the LED acoustic dome screen, when the speaker 2 plays audio from the gap between the mounting hemispherical cover 1 and the dome screen, the rubber diaphragm 105 is located on one side of the speaker 2. During the audio playback of the speaker 2, the rubber diaphragm 105 on the coaxial line will vibrate accordingly, thereby enhancing the low-frequency response of the audio playback of the dome screen, reducing the resonance interference of the audio inside the mounting hemispherical cover 1, and improving the audio playback effect of the LED acoustic dome screen.

[0046] Furthermore, friction blocks 19 are distributed on the outer walls of the top two sides of the mounting ring 103. The mounting ring 103 is screwed through the friction blocks 19, which facilitates the screwing, installation and disassembly of the end cap structure of the rubber diaphragm 105 on the hemispherical cover 1.

[0047] In this embodiment, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The flip-down heat dissipation drive assembly 11 includes a turbine disk 111 embedded and fixed on the outer wall of one side of the mounting hemispherical cover 1. A rotating tube 112 is rotatably mounted on the inner wall of the middle part of the turbine disk 111. An impeller 113 is fitted and fixed on the outer wall of one end of the rotating tube 112 inside the turbine disk 111. A first bevel gear 114 is fitted and fixed on the outer wall of one end of the rotating tube 112 outside the turbine disk 111. A mounting base 115 is fixed on one side of the outer wall of the turbine disk 111. A servo motor 116 is embedded and mounted on one side of the outer wall of the mounting base 115. A second bevel gear 117 is fixed to one end of the drive shaft of the servo motor 116. The second bevel gear 117 and the first bevel gear 114 are meshed and connected. One end of the rotating tube 112 is connected to the inner wall of the middle part of the other side of the hemispherical mounting bracket 3. A one-way bearing 118 is embedded and installed at the connection point. A second lug 119 is fitted on the outer wall of the end of the rotating tube 112, and a second bearing 1110 is embedded and installed at the connection point between the rotating tube 112 and the second lug 119. The bottom end of the second lug 119 is fixed to the outer wall of the top of the display circuit board 8 on the other side. An air intake filter 1111 is connected through the outer wall of the bottom of the turbine disk 111. An air supply bend 1112 is connected through the outer wall of one side of the turbine disk 111. The ends of the air supply bend 1112 and the rotating tube 112 are rotatably connected, and a rotating sleeve joint 1113 is provided at the rotatable connection point. A ratchet 1114 is fitted and fixed on the outer wall of the end of the wire bend 6. A pawl 1115 is fixed on the inner wall of one side of the hemispherical mounting bracket 3. One end of 15 is inserted into the tooth groove of ratchet 1114. Dust removal components 13 for idle display screens are provided on the inner walls of both sides of the hemispherical cover 1. During the use of this LED acoustically transparent dome display screen for cinemas, the servo motor 116 is controlled to rotate in a step-by-step manner. Under the meshing transmission of the first bevel gear 114 and the second bevel gear 117, the rotating tube 112 is driven to rotate. Under the action of the one-way bearing 118, the hemispherical mounting frame 3 is driven to rotate in a step-by-step manner around the wire bend tube 6. During the rotation of the hemispherical mounting frame 3, the pawl 1115 will rotate and engage with the tooth groove of ratchet 1114 step by step, realizing the positioning of the hemispherical mounting frame 3 after step-by-step rotation, so that the LED flexible screen 4 on the hemispherical mounting frame 3 can be moved out of the hemispherical cover 1 or stored in the mounting hemispherical cover 1. The LED flexible screen 4 is protected from dust by the hemispherical cover 1. During the use of this cinema LED acoustically transparent dome display screen, the servo motor 116 can be controlled to continuously rotate in reverse. Through bevel gear transmission, the rotating tube 112 is driven to rotate continuously. Under the action of the one-way bearing 118, the dome display screen will not rotate. The rotation of the rotating tube 112 will drive the impeller 113 to rotate in the turbine disk 111. The centrifugal force generated by the rotation of the impeller 113 draws in external air through the air intake filter element 1111. The drawn compressed air is output through the air delivery bend 1112. The compressed air is then input into the hemispherical mounting frame 3 through the rotating sleeve joint 1113 and the rotating tube 112, which serves to blow air and dissipate heat inside the dome display screen.Compressed air entering the hemispherical mounting bracket 3 is discharged through the wire bend 6 and input to the electrical control box 5, serving to dissipate heat by blowing air through the power and data cables passing through the wire bend 6 and the electrical control box 5.

[0048] Furthermore, a heat dissipation vent 12 is provided on one side of the outer wall of the electrical control box 5. Compressed air blown into the electrical control box 5 is discharged through the heat dissipation vent 12, and the air circulates inside the electrical control box 5, which is conducive to the heat dissipation of the dome display screen electrical control box 5.

[0049] Furthermore, a power data line is electrically connected between the control box 5 and the display circuit board 8, and the power data line passes through the wire bend 6. A data cable 18 is electrically connected between the display circuit board 8 and the LED flexible screen 4, and the data cable 18 is a spring telescopic wire, so that the data cable 18 will extend and retract during the rotation of the hemispherical mounting bracket 3, without affecting the data transmission of the LED flexible screen 4 on the hemispherical mounting bracket 3.

[0050] Furthermore, sound-absorbing cotton 14 is attached and fixed to the inner wall of the end of the hemispherical cover 1. The outer wall of the LED flexible screen 4 is in contact with the sound-absorbing cotton 14. The sound-absorbing cotton 14 on the inner wall of the end of the hemispherical cover 1 can absorb and consume the sound wave energy of the speaker 2, reduce the reflection and standing wave phenomenon of sound waves inside the hemispherical cover 1, effectively suppress the resonance and humming sound inside the hemispherical cover 1, and improve the overall acoustic performance of the speaker 2 of the dome screen display. With the rotation of the dome screen display, the LED flexible screen 4 can pass over the outer wall of the sound-absorbing cotton 14, and the sound-absorbing cotton 14 plays the role of wiping and cleaning the outer wall of the dome screen display.

[0051] In this embodiment, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7The idle display screen dust removal assembly 13 includes a three-way valve 131 that passes through the outer wall of the end of the wire bend 6. One end of the three-way valve 131 is connected to an air blowing pipe 132, and one end of the air blowing pipe 132 passes through the interior of the mounting hemispherical cover 1. A dust suction hole 133 is opened on the inner wall of one side of the bottom of the mounting hemispherical cover 1. A dust suction pipe 134 is connected through the bottom outer wall of the dust suction hole 133. The end of the dust suction pipe 134 is connected through a dust collection cylinder 135. A second internal thread 136 is opened on the top inner wall of the dust collection cylinder 135. A connecting ring 137 is fitted and fixed on the outer wall of the end of the air filter element 1111, and a second external thread 138 is provided on the outer wall of the connecting ring 137. During the idle period of this LED acoustically transparent dome display screen for cinemas, the hemispherical mounting bracket 3 is rotated to allow the LED flexible screen 4 to be housed inside the mounting hemispherical cover 1. With the cooperation of the second internal thread 136 and the second external thread 138, the dust collection cylinder 135 is screwed onto the connecting ring 137 at the end of the air filter element 1111. The servo motor 116 is controlled to continuously rotate in the reverse direction, and the transmission belt is used to... The impeller 113 rotates within the turbine disk 111. The centrifugal force generated by the rotation of the impeller 113 draws in external air through the intake filter element 1111. The drawn-in compressed air is input into the hemispherical mounting bracket 3 through the rotating pipe 112 and output through the wire bend 6. During this process, the three-way valve 131 is adjusted to allow the compressed air to be blown out through the air blowing pipe 132 inside the mounting hemispherical cover 1. The blown-out compressed air performs dust removal on the LED flexible screen 4 housed inside the mounting hemispherical cover 1. During this process, the speaker 2 is controlled to... The vibration frequency generates sound waves that act on the gaps between the LED flexible screens 4, facilitating dust removal from the gaps of the dome screen. During the suction process, the suction filter 1111 uses the dust collection cylinder 135 and suction pipe 134 to perform dust removal at the suction hole 133, causing the dust blown out of the hemispherical cover 1 to be sucked into the dust collection cylinder 135. Later, the dust collection cylinder 135 is rotated and removed for cleaning. In summary, this gives the cinema LED acoustic dome screen the function of dust removal when the screen is idle.

[0052] Furthermore, the suction hole 133 is funnel-shaped, and the suction pipe 134 is a telescopic pipe, which facilitates the pump absorption of dust blown away by the dome screen display.

[0053] Working Principle: In use, this invention utilizes an LED acoustically transparent dome screen for cinemas. A flexible LED screen 4 is mounted on a hemispherical mounting frame 3 to form a dome screen. The dome screen is then rotated and installed inside a hemispherical cover 1. A speaker 2 is installed on the inner wall of the end of the hemispherical cover 1. During audio playback, the hemispherical cover 1 acts as a sound amplification enclosure. When the hemispherical mounting frame 3 is rotated so that the flexible LED screen 4 is outside the hemispherical cover 1, the audio played by the speaker 2 during video playback is emitted from the gap between the hemispherical cover 1 and the dome screen, surrounding the dome screen and improving the audio playback effect. When the dome screen is not in use, the hemispherical mounting frame 3 can be rotated to retract the flexible LED screen 4 inside the hemispherical cover 1, providing protection for the dome screen during idle periods. The display circuit board 8 is integrated and installed in the hemispherical mounting bracket 3. Then, with the cooperation of the first external thread 104 and the first internal thread 102, the mounting ring 103 is screwed onto the stepped groove 101 of the hemispherical mounting bracket 3, so as to realize the encapsulation of the rubber diaphragm 105 on the mounting ring 103 within the hemispherical mounting bracket 3. Later, the end cap structure of the rubber diaphragm 105 can be unscrewed and removed, which is conducive to the maintenance of the circuit inside the dome display screen. During the use of the LED acoustic dome display screen, when the speaker 2 plays audio from the gap between the mounting hemispherical cover 1 and the dome display screen, the rubber diaphragm 105 is located on one side of the speaker 2. During the audio playback of the speaker 2, the rubber diaphragm 105 on the coaxial line will vibrate accordingly, thereby enhancing the low-frequency response of the audio playback of the dome display screen, reducing the resonance interference of the audio inside the mounting hemispherical cover 1, and improving the audio playback effect of the LED acoustic dome display screen.During use, the servo motor 116 is controlled to rotate in a stepping motion. Under the meshing transmission of the first bevel gear 114 and the second bevel gear 117, the rotating tube 112 rotates. Under the action of the one-way bearing 118, the hemispherical mounting frame 3 rotates in a stepping motion around the wire bend tube 6. During the rotation of the hemispherical mounting frame 3, the pawl 1115 rotates and engages step by step with the tooth groove of the ratchet 1114, realizing the positioning of the hemispherical mounting frame 3 after stepping rotation. This allows the LED flexible screen 4 on the hemispherical mounting frame 3 to be moved out of the mounting hemispherical cover 1 or stored in the mounting hemispherical cover 1, which serves as a dust protection for the LED flexible screen 4. During the use of this cinema LED acoustic dome display screen, the servo motor 116 can be controlled to rotate in a stepping motion. 6. Continuous reverse rotation is achieved. The rotating tube 112 is driven to rotate continuously via bevel gear transmission. The one-way bearing 118 prevents the dome screen from rotating. The rotation of the rotating tube 112 drives the impeller 113 to rotate within the turbine disk 111. The centrifugal force generated by the impeller 113 draws in external air through the intake filter element 1111. The drawn compressed air is output through the air delivery bend 1112. This compressed air then enters the hemispherical mounting bracket 3 through the rotating sleeve joint 1113 and the rotating tube 112, serving as a cooling system for the dome screen. The compressed air entering the hemispherical mounting bracket 3 is discharged through the wire bend 6 and input to the electrical control box 5, serving as a power data transmission line within the wire bend 6. The function of the air blower in the wire and electrical control box 5 is to dissipate heat. During the idle period of the LED acoustic dome screen display for the cinema, the hemispherical mounting bracket 3 is rotated to house the LED flexible screen 4 inside the mounting hemispherical cover 1. With the cooperation of the second internal thread 136 and the second external thread 138, the dust collection cylinder 135 is screwed onto the connecting ring 137 at the end of the suction filter element 1111. The servo motor 116 is controlled to continuously rotate in the reverse direction. Through transmission, the impeller 113 is driven to rotate in the turbine disk 111. The centrifugal force generated by the rotation of the impeller 113 draws in external air through the suction filter element 1111. The drawn compressed air is input into the hemispherical mounting bracket 3 through the rotating pipe 112 and output through the wire bend 6. During the process, the three-way valve 131 is adjusted. Compressed air is blown out through the air pipe 132 inside the mounting hemispherical cover 1, blowing away dust from the LED flexible screen 4 housed inside the hemispherical cover 1. During this process, the speaker 2 is controlled to vibrate at a specific frequency, and the resulting sound waves act on the gaps between the LED flexible screens 4, facilitating dust removal from the gaps of the dome screen display. During the suction process, the suction filter 1111 draws in dust through the dust collection cylinder 135 and the suction pipe 134 at the suction hole 133, sucking in the dust blown out of the mounting hemispherical cover 1 and collecting it into the dust collection cylinder 135. Later, the dust collection cylinder 135 is rotated and removed for cleaning. In summary, this provides the cinema LED acoustic dome screen display with the function of dust removal when the display is not in use.

[0054] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A type of LED acoustically transparent dome display screen for cinemas, characterized in that, The system includes a hemispherical enclosure (1), on which a loudspeaker (2) is inlaid on the inner wall of one end. A hemispherical mounting bracket (3) is provided inside the hemispherical enclosure (1). LED flexible screens (4) are inlaid on the outer wall of the hemispherical mounting bracket (3). An electrical control box (5) is fixed to the bottom outer wall of the hemispherical enclosure (1). A wire bend (6) is connected through one side of the outer wall of the electrical control box (5), with one end of the wire bend (6) penetrating inside the hemispherical enclosure (1). The end of the wire bend (6) is connected to the hemispherical mounting bracket. The inner wall of the middle section of one side of the mounting bracket (3) is connected through, and a first bearing (7) is embedded in the through connection. The interior of the hemispherical mounting bracket (3) is provided with a display circuit board (8). A first ear block (9) is fixed on the outer wall of the end of the wire bend (6). The bottom end of the first ear block (9) is fixed on the outer wall of the top side of the display circuit board (8). A diaphragm cover assembly (10) is provided on the outer wall of one side of the hemispherical mounting bracket (3). A flip heat dissipation drive assembly (11) is provided at the connection between the inner wall of the hemispherical mounting bracket (3) and the inner wall of the mounting hemispherical cover (1).

2. The LED acoustically transparent dome display screen for cinemas according to claim 1, characterized in that, The diaphragm cover assembly (10) includes a stepped groove (101) formed on the inner wall of the flat end of the hemispherical mounting bracket (3). A first internal thread (102) is formed on the inner wall of the stepped groove (101). An mounting ring (103) is installed inside the stepped groove (101), and a first external thread (104) is formed on the outer wall of the mounting ring (103). A rubber diaphragm (105) is covered and connected to the top inner wall of the mounting ring (103).

3. The LED acoustically transparent dome display screen for cinemas according to claim 1, characterized in that, The flip-down heat dissipation drive assembly (11) includes a turbine disk (111) embedded and fixed on the outer wall of one side of the mounting hemispherical cover (1). A rotating tube (112) is rotatably mounted on the inner wall of the middle part of the turbine disk (111). An impeller (113) is fitted and fixed on the outer wall of the rotating tube (112) at one end inside the turbine disk (111). A first bevel gear (114) is fitted and fixed on the outer wall of the rotating tube (112) at one end outside the turbine disk (111). A mounting base (115) is fixed on one side of the outer wall of the disk (111). A servo motor (116) is embedded in the outer wall of one side of the mounting base (115). A second bevel gear (117) is fixed at one end of the drive shaft of the servo motor (116). The second bevel gear (117) and the first bevel gear (114) are meshed and connected. One end of the rotating tube (112) is connected through to the inner wall of the middle end of the other side of the hemispherical mounting bracket (3), and a one-way bearing (118) is embedded at the through connection. The rotating tube (112) has a second ear block (119) fitted on the outer wall of its end, and a second bearing (1110) is inlaid at the connection between the rotating tube (112) and the second ear block (119). The bottom end of the second ear block (119) is fixed on the outer wall of the top of the display circuit board (8). An air intake filter (1111) is connected through the outer wall of the bottom of the turbine disk (111), and an air supply bend (1112) is connected through the outer wall of one side of the turbine disk (111). The gas supply bend (1112) and the rotating pipe (112) are rotatably connected at the ends, and a rotating sleeve joint (1113) is provided at the rotatable connection. A ratchet (1114) is fitted and fixed on the outer wall of the end of the wire bend (6). A pawl (1115) is fixed on one side of the inner wall of the hemispherical mounting bracket (3), and one end of the pawl (1115) is inserted into the tooth groove of the ratchet (1114). Dust removal components (13) for idle display screens are provided on the inner walls of both sides of the mounting hemispherical cover (1).

4. The LED acoustically transparent dome display screen for cinemas according to claim 1, characterized in that, The electrical control box (5) has heat dissipation vents (12) distributed on one side of its outer wall.

5. The LED acoustically transparent dome display screen for cinemas according to claim 1, characterized in that, The power control box (5) and the display circuit board (8) are electrically connected by a power data line, and the power data line passes through the wire bend (6). The display circuit board (8) and the LED flexible screen (4) are electrically connected by a data cable (18), and the data cable (18) is a spring telescopic wire.

6. The LED acoustically transparent dome display screen for cinemas according to claim 3, characterized in that, The idle display screen dust removal assembly (13) includes a three-way valve (131) that passes through the outer wall of the end of the wire bend (6). One end of the three-way valve (131) is connected to an air blowing pipe (132), and one end of the air blowing pipe (132) passes through the interior of the mounting hemispherical cover (1). A dust suction hole (133) is provided on the inner wall of the bottom side of the mounting hemispherical cover (1). A dust suction pipe (134) is connected through the bottom outer wall of the dust suction hole (133). A dust collection cylinder (135) is connected through the end of the dust collection cylinder (135). A second internal thread (136) is provided on the top inner wall of the dust collection cylinder (135). A connecting ring (137) is fitted and fixed on the outer wall of the end of the air suction filter (1111), and a second external thread (138) is provided on the outer wall of the connecting ring (137).

7. The LED acoustically transparent dome display screen for cinemas according to claim 1, characterized in that, Sound-absorbing cotton (14) is attached and fixed to the inner wall of the end of the mounting hemispherical cover (1), and the outer wall of the LED flexible screen (4) is in contact with the sound-absorbing cotton (14).

8. The LED acoustically transparent dome display screen for cinemas according to claim 1, characterized in that, A stepper motor (15) is embedded and fixed on the top outer wall of the electrical control box (5). A mounting plate (16) is fixed on the top of the output shaft of the stepper motor (15), and mounting screw holes (17) are distributed on the four corner outer walls of the top of the mounting plate (16).

9. A cinema LED acoustically transparent dome display screen according to claim 2, characterized in that, Friction blocks (19) are distributed on the outer walls of the top two sides of the mounting ring (103).

10. A cinema LED acoustically transparent dome display screen according to claim 6, characterized in that, The suction hole (133) is funnel-shaped, and the suction tube (134) is a telescopic tube.

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