Light-emitting diode (LED) sound transmission dome-screen display screen for cinema

Abstract

The invention provides an LED sound transmission dome-screen display screen for a cinema, and the display screen comprises an installation hemispherical cover, a loudspeaker is embedded in the inner wall of the end part of the installation hemispherical cover, a hemispherical installation frame is arranged in the installation hemispherical cover, LED flexible screens are distributed and embedded in the outer wall of the hemispherical installation frame, and an electric control box is fixed on the outer wall of the bottom of the installation hemispherical cover. A wire elbow is connected to the outer wall of one side of the electric control box in a penetrating mode, one end of the wire elbow penetrates through the interior of the mounting hemispherical cover, and the end of the wire elbow is connected with the inner wall of the middle end of one side of the hemispherical mounting frame in a penetrating mode; according to the LED sound transmission dome-screen display screen for the cinema, the LED flexible screen is installed on the hemispherical installation frame in an attached mode to form the dome-screen display screen, the dome-screen display screen is rotationally installed in the hemispherical cover, the function of protecting the dome-screen display screen in an idle state is achieved, and the loudspeaker is installed on the inner wall of the end where the hemispherical cover is installed, so that the dome-screen display screen is more attractive. The installation of the hemispherical cover plays a role of a sound amplification cover in the audio playing process.

Description

Technical Field

[0001] The present invention relates to the technical field of spherical screen displays, and more particularly to an LED sound-transmitting spherical screen display for cinemas. Background Art

[0002] A spherical screen display is a special screen with a spherical or hemispherical display carrier, which realizes a 360° surround visual presentation through curved surface display technology or projection technology, providing an immersive experience for viewers. Its core feature is to break the limitations of traditional flat screens and meet the viewing needs from multiple angles; it uses flexible or small-pitch LED modules to be spliced into a sphere, and problems such as arc fitting and pixel arrangement need to be solved; common types include: inner spherical screen: viewers enter the inside of the sphere to watch (such as the dome cinema in a planetarium), and the image is projected or displayed on the inner curved surface; outer spherical screen: the image is displayed on the outside of the sphere (such as an outdoor advertising spherical screen), usually composed of multiple curved surface modules spliced together; hemispherical screen: commonly seen in digital planetariums and immersive exhibitions, combined with projection or LED technology to achieve; in the patent: CN CN 222629954 U, an immersive panoramic LED spherical screen display is disclosed, including a base, and a spherical screen display body is arranged on the top of the base through a protection mechanism; the protection mechanism includes side plates, dampers, fixed blocks, springs, arc-shaped clamping plates, first slide rails, first sliders, ball bearings, connecting rods; the number of side plates is two, the dampers are fixedly connected to the opposite sides of the two side plates, the ends of the dampers away from the side plates are fixedly connected to the fixed blocks, and the springs are sleeved outside the dampers. Through the mutual cooperation between the side plates, dampers, fixed blocks, springs, arc-shaped clamping plates, first slide rails, first sliders, ball bearings, and connecting rods, the bumps received during the transportation of the spherical screen display body are cushioned, thereby improving the safety of the device during transportation.

[0003] However, the structural technology of spherical screen displays in the existing market is relatively simple. Most hemispherical screen displays are of a fixed structure and do not have the function of idle rotation and storage. Moreover, during the idle process of the spherical screen display, it does not have the ability to automatically remove dust from the LED display and the splicing gaps of the display. The speaker design in the traditional spherical screen display structure is not reasonable enough, and the played audio cannot surround the spherical screen display, affecting the audio playback effect of the spherical screen display.

[0004] Therefore, it is very meaningful for us to make improvements and propose an LED sound-transmitting spherical screen display for cinemas. Summary of the Invention

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

[0006] To achieve the above-mentioned invention purpose, the present invention provides the following technical solutions: An LED sound-transmitting spherical screen display for cinemas to improve the above problems.

[0007] The present application is as follows: It includes an installation hemispherical cover. A loudspeaker is inlaid and installed on the inner wall of the end of the installation hemispherical cover. A hemispherical mounting frame is arranged inside the installation hemispherical cover. LED flexible screens are distributed and inlaid on the outer wall of the hemispherical mounting frame. An electric control box is fixed on the outer wall of the bottom of the installation hemispherical cover. A wire elbow is connected through the outer wall of one side of the electric control box, and one end of the wire elbow penetrates into the interior of the installation hemispherical cover. The end of the wire elbow is connected through the inner wall of the middle of one side of the hemispherical mounting frame, and a first bearing is inlaid at the connection. A display circuit board is arranged inside the hemispherical mounting frame. A first ear block is sleeved and fixed on the outer wall of the end of the wire elbow. The bottom end of the first ear block is fixed on the outer wall of the top side of the display circuit board. A diaphragm cover assembly is arranged on the outer wall of one side of the hemispherical mounting frame. A flip heat dissipation driving assembly is arranged at the connection of the inner walls of one side of the hemispherical mounting frame and the installation hemispherical cover.

[0008] As a preferred technical solution of the present application, the diaphragm cover assembly includes a step groove opened on the inner wall of the flat end of the hemispherical mounting frame. A first internal thread is opened on the inner wall of the step groove. An installation ring is installed inside the step groove, and a first external thread is opened on the outer wall of the installation ring. A rubber diaphragm is covered and connected on the inner wall of the top of the installation ring.

[0009] As a preferred technical solution of the present application, the flip heat dissipation driving assembly includes a turbine disk inlaid and fixed on the outer wall of one side of the installation hemispherical cover. A rotating tube is rotatably installed on the inner wall of the middle of the turbine disk. An impeller is sleeved and fixed on the outer wall of the end of the rotating tube located inside the turbine disk. A first bevel gear is sleeved and fixed on the outer wall of the end of the rotating tube penetrating outside the turbine disk. A mounting seat is fixed on the outer wall of one side of the turbine disk. A servo motor is inlaid and installed on the outer wall of one side of the mounting seat. One end of the driving shaft of the servo motor is fixed with a second bevel gear. The second bevel gear is meshed with the first bevel gear. One end of the rotating tube is connected through the inner wall of the middle of the other side of the hemispherical mounting frame, and a one-way bearing is inlaid at the connection. A second ear block is sleeved on the outer wall of the end of the rotating tube, and a second bearing is inlaid at the connection of the rotating tube and the second ear block. The bottom end of the second ear block is fixed on the outer wall of the top of the other side of the display circuit board. An air intake filter element is connected through the outer wall of the bottom of the turbine disk. An air delivery elbow is connected through the outer wall of one side of the turbine disk. The air delivery elbow is rotationally connected with the end of the rotating tube, and a rotary sleeve joint is arranged at the rotational connection. A ratchet wheel is sleeved and fixed on the outer wall of the end of the wire elbow. A pawl is fixed on the inner wall of one side of the hemispherical mounting frame, and one end of the pawl is inserted into the tooth groove of the ratchet wheel. Idle display screen dust removal components are arranged on the inner walls of both sides of the installation hemispherical cover.

[0010] As a preferred technical solution of the present application, heat dissipation openings are distributed and penetrated on one outer wall of the electric control box.

[0011] As a preferred technical solution of the present application, a power data line is electrically connected between the electric control box and the display circuit board, and the power data line passes through the wire elbow. A data cable is electrically connected between the display circuit board and the LED flexible screen, and the data cable is a kind of spring telescopic wire.

[0012] As a preferred technical solution of the present application, the idle display screen dust removal assembly includes a three-way valve installed through and on the outer wall of the end of the wire elbow. One end of the three-way valve is connected through a blow pipe, and one end of the blow pipe penetrates into the interior of the installation hemispherical cover. A dust suction hole is provided on one inner wall at the bottom of the installation hemispherical cover. A dust suction pipe is connected through the outer wall at the bottom of the dust suction hole. The end of the dust suction pipe is connected through a dust collection cylinder. A second internal thread is provided on the inner wall at the top of the dust collection cylinder. A connecting ring is sleeved and fixed on the outer wall of the end of the suction filter element, and a second external thread is provided on the outer wall of the connecting ring.

[0013] As a preferred technical solution of the present application, a sound-absorbing cotton is fixedly attached to the inner wall at the end of the installation hemispherical cover, and the outer wall of the LED flexible screen is in contact connection with the sound-absorbing cotton.

[0014] As a preferred technical solution of the present application, a stepping motor is inlaid and fixed on the outer wall at the top of the electric control box. The top end of the output shaft of the stepping motor is fixed with a mounting plate, and mounting screw holes are distributed on the outer walls at the four corners of the top of the mounting plate.

[0015] As a preferred technical solution of the present application, friction blocks are distributed on both outer walls at the top of the mounting ring.

[0016] As a preferred technical solution of the present application, the dust suction hole is in a horn shape, and the dust suction pipe is a kind of telescopic pipe.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: In the solution of the present application: The LED sound-transmitting spherical screen display for a cinema forms a spherical screen display by fitting and installing the LED flexible screen on the hemispherical mounting frame, and rotatably installs the spherical screen display in the installation hemispherical cover. Speakers are installed on the inner wall at the end of the installation hemispherical cover. The installation hemispherical cover plays the role of a sound amplification cover during audio playback. During video playback through the spherical screen display, the audio played by the speakers is broadcast from the gap between the installation hemispherical cover and the spherical screen display, and the broadcast audio surrounds the spherical screen display, improving the audio broadcast effect of the LED sound-transmitting spherical screen display. During the idle process of the spherical screen display, the hemispherical mounting frame can be rotated to store the LED flexible screen inside the installation hemispherical cover, playing a role in protecting the idle spherical screen display; Through the setting of the diaphragm cover assembly, the display circuit board is integrally installed in the hemispherical mounting bracket. By screwing the mounting ring and the rubber diaphragm structure together, the encapsulation inside the hemispherical mounting bracket is achieved. Later, the rubber diaphragm end cover structure can be screwed off, which is beneficial for the maintenance of the circuit inside the spherical screen display. During the use of the LED sound-transmitting spherical screen display, when the speaker plays audio and broadcasts it from the gap between the mounting hemispherical cover and the spherical screen display, the rubber diaphragm is located on one side of the speaker. During the audio playback of the speaker, the rubber diaphragm on the coaxial line will vibrate accordingly, thereby enhancing the low-frequency response of the audio playback of the spherical screen display, reducing the resonance interference of the audio inside the mounting hemispherical cover, and improving the audio broadcast effect of the LED sound-transmitting spherical screen display; Through the setting of the flipping heat dissipation drive assembly, the servo motor can be controlled to rotate step by step forward, driving the flipping of the hemispherical mounting bracket, so that the LED flexible screen can be moved out of the mounting hemispherical cover or the LED flexible screen can be stored in the mounting hemispherical cover, playing a role in dust-proof protection of the LED flexible screen; the servo motor can be controlled to rotate continuously in the reverse direction. Through transmission, the rotating pipe will drive the impeller to rotate inside the turbine disc. The centrifugal force generated by the rotation of the impeller sucks in external air through the air intake filter element. The sucked compressed air is input into the hemispherical mounting bracket through the air delivery elbow pipe, the rotary sleeve joint and the rotating pipe, playing a role in blowing and cooling the inside of the spherical screen display. The compressed air input into the hemispherical mounting bracket is discharged through the wire elbow pipe and input into the electric control box, playing a role in blowing and cooling the power data line passing through the wire elbow pipe and the electric control box; Through the setting of the idle display screen dust removal assembly, during the idle process of the cinema LED sound-transmitting spherical screen display, the LED flexible screen is stored inside the mounting hemispherical cover. Then, the dust collection cylinder 135 is screwed to the connecting ring at the end of the air intake filter element. When controlling the servo motor to rotate continuously in the reverse direction for blowing and cooling the spherical screen display, the compressed air input into the hemispherical mounting bracket is output through the wire elbow pipe. The three-way valve is adjusted so that the compressed air is blown out inside the mounting hemispherical cover through the air blowing pipe. The blown compressed air blows the dust on the LED flexible screen stored inside the mounting hemispherical cover. During the process, the speaker is controlled to play at a vibration frequency, and the generated sound wave vibration acts on the gaps between the spliced LED flexible screens, which is beneficial for dust removal at the gaps of the spherical screen display. During the suction process of the air intake filter element, dust is sucked and collected into the dust collection cylinder through the dust collection cylinder and the dust suction pipe at the dust suction hole. In summary, the cinema LED sound-transmitting spherical screen display has the function of dust removal for the idle display screen. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the cinema LED sound-transmitting spherical screen display provided by this application; Figure 2 It is a schematic diagram of the three-dimensional structure of the mounting hemispherical cover in the cinema LED sound-transmitting spherical screen display provided by this application; Figure 3 is Figure 1 an enlarged structural view of area A in Figure 4 is Figure 1 an enlarged structural view of area B in Figure 5 is a three-dimensional sectional structural view of a turbine disk in the LED sound-transmitting spherical screen display for a cinema provided by the present application; Figure 6 is Figure 1 an enlarged structural view of area C in Figure 7 is Figure 2 an enlarged structural view of area D in

[0019] Labels in the figure: 1. Installation hemispherical cover; 2. Speaker; 3. Hemispherical mounting bracket; 4. LED flexible screen; 5. Electric control box; 6. Wire elbow; 7. First bearing; 8. Display circuit board; 9. First ear piece; 10. Diaphragm cover assembly; 11. Flip heat dissipation drive assembly; 12. Heat dissipation port; 13. Idle display dust removal assembly; 14. Sound-absorbing cotton; 15. Stepper motor; 16. Mounting plate; 17. Mounting screw hole; 18. Data cable; 19. Friction block; 101. Step groove; 102. First internal thread; 103. Mounting ring; 104. First external thread; 105. Rubber diaphragm; 111. Turbine disk; 112. Rotating tube; 113. Impeller; 114. First bevel gear; 115. Mounting seat; 116. Servo motor; 117. Second bevel gear; 118. One-way bearing; 119. Second ear piece; 1110. Second bearing; 1111. Suction filter element; 1112. Air delivery elbow; 1113. Rotary sleeve joint; 1114. Ratchet; 1115. Pawl; 131. Three-way valve; 132. 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 manners

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention.

[0021] Accordingly, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0022] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0023] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0025] The following further describes the present invention in conjunction with the Figure 1-7 accompanying drawings and embodiments: In this embodiment, as Figure 1-7As shown in the figure, an LED sound-transmitting spherical screen display for a cinema includes a mounting hemispherical cover 1. A loudspeaker 2 is inlaid and installed on the inner wall of the end of the mounting hemispherical cover 1. A hemispherical mounting frame 3 is arranged inside the mounting hemispherical cover 1. LED flexible screens 4 are distributed and inlaid on the outer wall of the hemispherical mounting frame 3. An electric control box 5 is fixed on the bottom outer wall of the mounting hemispherical cover 1. A wire bending pipe 6 is connected through the outer wall of one side of the electric control box 5, and one end of the wire bending pipe 6 penetrates into the inside of the mounting hemispherical cover 1. The end of the wire bending pipe 6 is connected through the inner wall of the middle of one side of the hemispherical mounting frame 3, and a first bearing 7 is inlaid at the connection. A display circuit board 8 is arranged inside the hemispherical mounting frame 3. A first ear piece 9 is fixedly sleeved on the outer wall of the end of the wire bending pipe 6, and the bottom end of the first ear piece 9 is fixed on the top outer wall of one side of the display circuit board 8. A diaphragm cover assembly 10 is arranged on the outer wall of one side of the hemispherical mounting frame 3. A turning heat dissipation driving assembly 11 is arranged at the connection of the inner walls of one side of the hemispherical mounting frame 3 and the mounting hemispherical cover 1. The LED sound-transmitting spherical screen display for the cinema forms a spherical screen display by fitting and installing the LED flexible screens 4 on the hemispherical mounting frame 3, and rotatably installs the spherical screen display inside the mounting hemispherical cover 1. A loudspeaker 2 is installed on the inner wall of the end of the mounting hemispherical cover 1. The mounting hemispherical cover 1 functions as an amplifying cover during audio playback. When the hemispherical mounting frame 3 is rotated to place the LED flexible screens 4 outside the mounting hemispherical cover 1, during video playback through the spherical screen display, the audio played by the loudspeaker 2 is broadcast from the gap between the mounting hemispherical cover 1 and the spherical screen display, and the broadcast audio surrounds the spherical screen display, improving the audio broadcast effect of the LED sound-transmitting spherical screen display. During the idle process of the spherical screen display, the hemispherical mounting frame 3 can be rotated to store the LED flexible screens 4 inside the mounting hemispherical cover 1, playing a role in protecting the spherical screen display when it is idle.

[0026] Furthermore, a stepping motor 15 is inlaid and fixed on the top outer wall of the electric control box 5. The top end of the output shaft of the stepping motor 15 is fixed with a mounting plate 16, and mounting screw holes 17 are distributed on the outer walls of the four corners of the top of the mounting plate 16. The LED sound-transmitting spherical screen display for the cinema is hoisted and installed through the mounting screw holes 17 on the mounting plate 16 in cooperation with expansion bolts. During the hoisting process, the stepping motor 15 can be controlled to work to drive the spherical screen display structure below the electric control box 5 to perform stepping rotation, realizing 360° adjustment of the display direction of the spherical screen display.

[0027] 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 bracket 3. A first internal thread 102 is provided on the inner wall of the stepped groove 101. An installation ring 103 is installed inside the stepped groove 101, and a first external thread 104 is provided on the outer wall of the installation ring 103. A rubber diaphragm 105 is covered and connected to the inner wall of the top of the installation ring 103. The LED sound-transmitting spherical screen display integrally installs the display circuit board 8 inside the hemispherical mounting bracket 3, and then screws the installation ring 103 onto the stepped groove 101 of the hemispherical mounting bracket 3 under the cooperation of the first external thread 104 and the first internal thread 102, realizing the encapsulation of the rubber diaphragm 105 on the installation ring 103 inside the hemispherical mounting bracket 3. In the later stage, the end cover structure of the rubber diaphragm 105 can be screwed off, which is beneficial to the maintenance of the circuit inside the spherical screen display. During the use of the LED sound-transmitting spherical screen display, when the speaker 2 plays audio and broadcasts it from the gap between the installation hemispherical cover 1 and the spherical screen display, the rubber diaphragm 105 is located on one side of the speaker 2. During the audio playback process 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 spherical screen display, reducing the resonance interference of the audio inside the installation hemispherical cover 1, and improving the audio broadcast effect of the LED sound-transmitting spherical screen display.

[0028] Furthermore, friction blocks 19 are distributed on the outer walls of both sides of the top of the installation ring 103. The installation ring 103 is screwed by the friction blocks 19, which is beneficial to the screwing installation and disassembly of the end cover structure of the rubber diaphragm 105 on the installation hemispherical cover 1.

[0029] In this embodiment, referring to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5, The flipping heat dissipation drive assembly 11 includes a turbine disk 111 embedded and fixed on the outer wall of one side of the installation hemispherical cover 1. A rotating tube 112 is rotatably installed on the inner wall of the middle part of the turbine disk 111. An impeller 113 is sleeved and fixed on the outer wall of one end of the rotating tube 112 located inside the turbine disk 111. A first bevel gear 114 is sleeved and fixed on the outer wall of the end of the rotating tube 112 passing through the outside of the turbine disk 111. An installation seat 115 is fixed on the outer wall of one side of the turbine disk 111. A servo motor 116 is embedded and installed on the outer wall of one side of the installation seat 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 is meshed and connected with the first bevel gear 114. One end of the rotating tube 112 is connected through and communicated with the inner wall of the middle part of the other side of the hemispherical installation frame 3, and a one-way bearing 118 is embedded and installed at the through connection. A second ear block 119 is sleeved on the outer wall of the end of the rotating tube 112, and a second bearing 1110 is embedded and installed 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 other side of the top of the display circuit board 8. An air intake filter element 1111 is connected through and communicated with the bottom outer wall of the turbine disk 111. An air delivery elbow 1112 is connected through and communicated with the outer wall of one side of the turbine disk 111. The air delivery elbow 1112 is rotatably connected with the end of the rotating tube 112, and a rotary sleeve joint 1113 is arranged at the rotating connection. A ratchet wheel 1114 is sleeved and fixed on the outer wall of the end of the wire elbow 6. A pawl 1115 is fixed on the inner wall of one side of the hemispherical installation frame 3, and one end of the pawl 1115 is inserted into the tooth groove of the ratchet wheel 1114. Idle display screen dust removal components 13 are arranged on the inner walls of both sides of the installation hemispherical cover 1. During the use of this cinema LED sound-transmitting spherical screen display, the servo motor 116 is controlled to perform a step-by-step forward rotation. Driven by 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 installation frame 3 is driven to perform a step-by-step rotation around the wire elbow 6. During the rotation of the hemispherical installation frame 3, the pawl 1115 will be rotated and gradually engaged into the tooth groove of the ratchet wheel 1114, realizing the positioning after the step-by-step rotation of the hemispherical installation frame 3. Thus, the LED flexible screen 4 on the hemispherical installation frame 3 is moved out of the installation hemispherical cover 1 or the LED flexible screen 4 is received into the installation hemispherical cover 1, playing a role in dust-proof protection of the LED flexible screen 4. During the use of this cinema LED sound-transmitting spherical screen display, the servo motor 116 can be controlled to perform a continuous reverse rotation. Driven by the bevel gear transmission, the rotating tube 112 is driven to rotate continuously. Under the action of the one-way bearing 118, the spherical screen display will not be driven to rotate. The rotation of the rotating tube 112 will drive the impeller 113 to rotate inside the turbine disk 111. The centrifugal force generated by the rotation of the impeller 113 sucks external air through the air intake filter element 1111. The sucked compressed air is output through the air delivery elbow 1112. The compressed air is thus input into the hemispherical installation frame 3 through the rotary sleeve joint 1113 and the rotating tube 112, playing a role in blowing and cooling the inside of the spherical screen display.The compressed air input into the hemispherical mounting frame 3 is discharged through the wire bend 6 and input into the electric control box 5, which plays the role of blowing and dissipating heat through the power data line and the electric control box 5 in the wire bend 6.

[0030] Furthermore, a heat dissipation port 12 is distributed and opened on the outer wall of one side of the electric control box 5, and the compressed air blown into the electric control box 5 is discharged through the heat dissipation port 12, and the air circulates in the electric control box 5, which is beneficial to the heat dissipation of the electric control box 5 of the dome screen display.

[0031] Furthermore, a power data cable is electrically connected between the electric control box 5 and the display circuit board 8, and the power data cable 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-retractable wire, so that the data cable 18 will retract and contract during the rotation of the hemispherical mounting frame 3 without affecting the data transmission of the LED flexible screen 4 on the hemispherical mounting frame 3.

[0032] Furthermore, sound-absorbing cotton 14 is fixed on the inner wall of the end of the semi-spherical cover 1, and the outer wall of the LED flexible screen 4 is in contact with the sound-absorbing cotton 14. The setting of the sound-absorbing cotton 14 on the inner wall of the end of the semi-spherical cover 1 can absorb and consume the sound wave energy of the speaker 2, reduce the reflection and standing wave phenomenon of the sound wave inside the semi-spherical cover 1, effectively suppress the resonance and humming sound inside the semi-spherical cover 1, and improve the overall acoustic performance of the speaker 2 of the dome display screen. In conjunction with the rotation of the above-mentioned dome display screen, the LED flexible screen 4 can pass through 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 display screen.

[0033] In this embodiment, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7, The dust removal component 13 for the idle display screen includes a three-way valve 131 installed through the outer wall of the end of the wire elbow 6. One end of the three-way valve 131 is connected through a blow pipe 132, and one end of the blow pipe 132 penetrates into 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 outer wall of the bottom 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 inner wall of the top of the dust collection cylinder 135. A connecting ring 137 is fixedly sleeved on the outer wall of the end of the suction filter element 1111, and a second external thread 138 is opened on the outer wall of the connecting ring 137. During the idle process of this cinema LED sound-transmitting spherical screen display, rotate the hemispherical mounting frame 3 to store the LED flexible screen 4 inside the mounting hemispherical cover 1. Under the cooperation of the second internal thread 136 and the second external thread 138, screw the dust collection cylinder 135 onto the connecting ring 137 at the end of the suction filter element 1111. Control the servo motor 116 to continuously rotate in the reverse direction, and drive the impeller 113 to rotate inside the turbine disk 111 through transmission. The centrifugal force generated by the rotation of the impeller 113 sucks in external air through the suction filter element 1111. The sucked compressed air is input into the hemispherical mounting frame 3 through the rotating pipe 112 and output through the wire elbow 6. During this process, adjust the three-way valve 131 so that the compressed air blows out inside the mounting hemispherical cover 1 through the blow pipe 132. The blown compressed air performs dust blowing treatment on the LED flexible screen 4 stored inside the mounting hemispherical cover 1. During this process, control the speaker 2 to play at a vibration frequency, and the generated sound wave vibration acts on the gaps between the spliced LED flexible screens 4, which is beneficial to the dust removal treatment of the gaps of the spherical screen display. During the suction process of the suction filter element 1111, dust suction treatment is carried out at the dust suction hole 133 through the dust collection cylinder 135 and the dust suction pipe 134, so that the dust blown out inside the mounting hemispherical cover 1 is sucked and collected into the dust collection cylinder 135. Later, rotate and remove the dust collection cylinder 135 to clean the dust inside the dust collection cylinder 135. In summary, this cinema LED sound-transmitting spherical screen display has the function of dust removal for the idle display screen.

[0034] Further, the dust suction hole 133 is in a horn shape, and the dust suction pipe 134 is a telescopic pipe, which is beneficial to the pumping and collection of the dust blown off the spherical screen display.

[0035] Working principle: When the present invention is in use, the LED sound-transmitting spherical screen display in the cinema forms a spherical screen display by fitting and installing the LED flexible screen 4 on the hemispherical mounting frame 3, and rotatably installs the spherical screen display in the hemispherical cover 1. Speakers 2 are installed on the inner wall of the end of the hemispherical cover 1. The hemispherical cover 1 functions as an amplifier cover during audio playback. When the hemispherical mounting frame 3 is rotated to place the LED flexible screen 4 outside the hemispherical cover 1, during the video playback through the spherical screen display, the audio played by the speakers 2 is broadcast from the gap between the hemispherical cover 1 and the spherical screen display. The broadcast audio surrounds the spherical screen display, improving the audio broadcast effect of the LED sound-transmitting spherical screen display. During the idle process of the spherical screen display, the hemispherical mounting frame 3 can be rotated to store the LED flexible screen 4 inside the hemispherical cover 1, playing a role in protecting the spherical screen display when it is idle; The display circuit board 8 is integrally installed in the hemispherical mounting frame 3, and then the mounting ring 103 is screwed and installed on the step groove 101 of the hemispherical mounting frame 3 under the cooperation of the first external thread 104 and the first internal thread 102, realizing the encapsulation of the rubber diaphragm 105 on the mounting ring 103 inside the hemispherical mounting frame 3. Later, the end cover structure of the rubber diaphragm 105 can be unscrewed, which is beneficial for the maintenance of the circuit inside the spherical screen display. During the use of the LED sound-transmitting spherical screen display, when the audio played by the speakers 2 is broadcast from the gap between the hemispherical cover 1 and the spherical screen display, the rubber diaphragm 105 is located on one side of the speakers 2. The rubber diaphragm 105 on the coaxial line will vibrate accordingly during the audio playback of the speakers 2, thereby enhancing the low-frequency response of the audio playback of the spherical screen display, reducing the resonance interference of the audio inside the hemispherical cover 1, and improving the audio broadcast effect of the LED sound-transmitting spherical screen display;During use, the servo motor 116 is controlled to rotate step by step in the forward direction. Driven by 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 bracket 3 is driven to rotate step by step around the wire bending tube 6. During the rotation of the hemispherical mounting bracket 3, the pawl 1115 is driven to engage step by step into the tooth grooves of the ratchet 1114, realizing the positioning of the hemispherical mounting bracket 3 after step rotation. Thus, the LED flexible screen 4 on the hemispherical mounting bracket 3 is moved out of the mounting hemispherical cover 1 or the LED flexible screen 4 is received into the mounting hemispherical cover 1, playing a role in dust-proof protection of the LED flexible screen 4. During the use of this LED sound-transmitting spherical screen display for theaters, the servo motor 116 can be controlled to rotate continuously in the reverse direction. Driven by the bevel gear transmission, the rotating tube 112 rotates continuously. Under the action of the one-way bearing 118, the spherical screen display is not driven to rotate. The rotation of the rotating tube 112 drives the impeller 113 to rotate in the turbine disk 111. The centrifugal force generated by the rotation of the impeller 113 sucks external air through the air intake filter element 1111. The sucked compressed air is output through the air delivery bending tube 1112. Thus, the compressed air is input into the interior of the hemispherical mounting bracket 3 through the rotary sleeve joint 1113 and the rotating tube 112, playing a role in blowing air for heat dissipation inside the spherical screen display. The compressed air input into the interior of the hemispherical mounting bracket 3 is discharged through the wire bending tube 6 and input into the electric control box 5, playing a role in blowing air for heat dissipation of the power data cable passing through the wire bending tube 6 and the electric control box 5. During the idle process of this LED sound-transmitting spherical screen display for theaters, the hemispherical mounting bracket 3 is rotated to receive the LED flexible screen 4 inside the mounting hemispherical cover 1. The dust collection cylinder 135 is screwed and connected to the connecting ring 137 at the end of the air intake filter element 1111 under the cooperation of the second internal thread 136 and the second external thread 138. The servo motor 116 is controlled to rotate continuously in the reverse direction. Driven by the transmission, the impeller 113 rotates in the turbine disk 111. The centrifugal force generated by the rotation of the impeller 113 sucks external air through the air intake filter element 1111. When the sucked compressed air is input into the interior of the hemispherical mounting bracket 3 through the rotating tube 112 and output through the wire bending tube 6, the three-way valve 131 is adjusted so that the compressed air is blown out inside the mounting hemispherical cover 1 through the air blowing tube 132. The blown compressed air performs a dust blowing treatment on the LED flexible screen 4 received inside the mounting hemispherical cover 1. During this process, the speaker 2 is controlled to play at a vibration frequency, and the generated sound wave vibration acts on the gaps between the spliced LED flexible screens 4, facilitating the dust removal treatment of the gaps of the spherical screen display. During the suction process of the air intake filter element 1111, dust collection is performed through the dust collection cylinder 135 and the dust suction pipe 134 at the dust suction hole 133, so that the dust blown out inside the mounting hemispherical cover 1 is sucked and collected into the dust collection cylinder 135. Later, the dust collection cylinder 135 is rotated and removed to clean the dust inside the dust collection cylinder 135. In summary, this LED sound-transmitting spherical screen display for theaters has the function of dust removal for the idle display screen.

[0036] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although the present specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A LED sound-transmitting ball screen display for cinemas, characterized in that: The invention comprises a mounting hemispherical cover (1), wherein a speaker (2) is inlaid and installed on the inner wall of the end of the mounting hemispherical cover (1), a hemispherical mounting frame (3) is arranged inside the mounting hemispherical cover (1), and an LED flexible screen (4) is distributed and inlaid on the outer wall of the hemispherical mounting frame (3), an electric control box (5) is fixed on the outer wall of the bottom of the mounting hemispherical cover (1), a wire bend tube (6) is connected through the outer wall of one side of the electric control box (5), and one end of the wire bend tube (6) passes through the interior of the mounting hemispherical cover (1), and the end of the wire bend tube (6) is connected to the hemispherical mounting frame (1). The inner wall of the middle end of one side of the mounting frame (3) is connected through, and a first bearing (7) is embedded and installed at the through connection. A display circuit board (8) is arranged inside the hemispherical mounting frame (3). A first ear block (9) is fixedly mounted on the outer wall of the end of the wire bending tube (6). The bottom end of the first ear block (9) is fixed to the outer wall of the top side of the display circuit board (8). A diaphragm cover assembly (10) is arranged on the outer wall of one side of the hemispherical mounting frame (3). A flip heat dissipation drive assembly (11) is arranged at the connection between the hemispherical mounting frame (3) and the inner wall of one side of the mounting hemispherical cover (1).

2. The LED sound-transmitting ball screen for cinema according to claim 1, characterized in that: The diaphragm cover assembly (10) comprises a step 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 step groove (101); a mounting ring (103) is mounted inside the step groove (101); a first external thread (104) is formed on the outer wall of the mounting ring (103); and a rubber diaphragm (105) is covered and connected to the top inner wall of the mounting ring (103).

3. The LED sound-transmitting ball screen for cinema according to claim 1, characterized in that: The flip heat dissipation drive assembly (11) comprises a turbine disc (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 portion of the turbine disc (111); an impeller (113) is sleeved and fixed on the outer wall of the rotating tube (112) located at one end inside the turbine disc (111); a first bevel gear (114) is sleeved and fixed on the outer wall of the rotating tube (112) that passes through one end outside the turbine disc (111); A mounting seat (115) is fixed on one side outer wall of the disk (111), a servo motor (116) is embedded and installed on one side outer wall of the mounting seat (115), a second bevel gear (117) is fixed to one end of the driving shaft of the servo motor (116), the second bevel gear (117) is meshingly connected with the first bevel gear (114), one end of the rotating tube (112) is through-connected with the inner wall of the middle end of the other side of the hemispherical mounting frame (3), and a one-way bearing (118) is embedded and installed at the through-connection. ), a second ear block (119) is sleeved on the outer wall of the end of the rotating tube (112), and a second bearing (1110) is embedded and installed 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 to the outer wall on the other side of the top of the display circuit board (8), an air intake filter element (1111) is connected through the outer wall of the bottom of the turbine disc (111), and a gas delivery elbow (1112) is connected through the outer wall of one side of the turbine disc (111), The gas delivery bend (1112) and the end of the rotating tube (112) are rotatably connected, and a rotating sleeve joint (1113) is provided at the rotatable connection. A ratchet (1114) is fixedly mounted on the outer wall of the end of the wire bend (6). A ratchet (1115) is fixed on the inner wall of one side of the hemispherical mounting frame (3), and one end of the ratchet (1115) is inserted into the tooth groove of the ratchet (1114). Idle display screen dust removal components (13) are provided on the inner walls of both sides of the mounting hemispherical cover (1).

4. The LED sound-transmitting ball screen for cinema according to claim 1, characterized in that: Heat dissipation openings (12) are distributed and opened on an outer wall of one side of the electric control box (5).

5. The LED sound-transmitting ball screen for cinema according to claim 1, characterized in that: A power data line is electrically connected between the electric control box (5) and the display circuit board (8), and the power data line passes through the wire bend tube (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-loaded retractable wire.

6. The LED sound-transmitting ball screen for cinema according to claim 3, characterized in that: The idle display screen dust removal component (13) comprises a three-way valve (131) installed on 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) is connected to the interior of the mounting hemispherical cover (1); a dust suction hole (133) is provided on the inner wall of one side of the bottom of the mounting hemispherical cover (1); a dust suction pipe (134) is connected to the outer wall of the bottom of the dust suction hole (133); the end of the dust suction pipe (134) is connected to a dust collecting cylinder (135); a second internal thread (136) is provided on the top inner wall of the dust collecting cylinder (135); a connecting ring (137) is fixedly mounted on the outer wall of the end of the air suction filter element (1111); and a second external thread (138) is provided on the outer wall of the connecting ring (137).

7. The LED sound-transmitting ball screen for cinema according to claim 1, characterized in that: A sound-absorbing cotton (14) is fitted and fixed on 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 and connected to the sound-absorbing cotton (14).

8. The LED sound-transmitting ball screen for cinema according to claim 1, characterized in that: A stepper motor (15) is embedded and fixed on the top outer wall of the electric control box (5), a mounting plate (16) is fixed on the top end of the output shaft of the stepper motor (15), and mounting screw holes (17) are distributed on the outer walls at the four corners of the top of the mounting plate (16).

9. The LED sound-transmitting ball screen for cinema according to claim 2, characterized in that: Friction blocks (19) are distributed on the outer walls on both sides of the top of the mounting ring (103).

10. The LED sound-transmitting ball screen for cinema according to claim 6, characterized in that: The dust suction hole (133) is in the shape of a trumpet, and the dust suction tube (134) is a telescopic tube.

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