LED movie screen and 3D movie system

Abstract

The utility model discloses an LED movie screen and a 3D movie system. The LED movie screen comprises LED lamp boxes, and a plurality of LED lamp boxes are regularly stacked and fixed in a matrix form to form a rectangle. The LED lamp box comprises a box body, a playing surface of the box body is provided with a plurality of LED lamp panels, all the LED lamp panels are regularly arranged in a matrix form and are mutually spliced and fixed, each LED lamp panel is provided with a lamp panel control module, and the lamp panel control modules are arranged in a control box. Each LED lamp panel comprises a plurality of LED lamp beads and a plurality of infrared signal transmitters, the LED lamp beads and the infrared signal transmitters are regularly arranged in a matrix mode, the infrared signal transmitters are located between the adjacent LED lamp beads, the number of the LED lamp beads is far larger than that of the infrared signal transmitters, and the infrared signal transmitters and the LED lamp beads are connected with the lamp panel control module. Infrared signals emitted by the LED movie screen are directly emitted to a watching table from the front face, emission dead angles do not exist, the receiving effect at any position is consistent, and the picture playing effect is good.

Description

Technical Field

[0001] The utility model relates to an LED movie screen and a 3D movie system used in a cinema, belonging to the field of 3D movie playing equipment. Background Art

[0002] In recent years, with the popularity of LED movie screens, 3D movies have set off a craze. At present, the playback methods used for 3D movies are mainly divided into active and passive. The 3D glasses used in the passive playback method are very simple, with only polarizers designed on them. During playback, the 3D glasses rely on the polarizers to filter and only allow the light displayed at a specific polarization angle to pass through, thereby obtaining a complete picture effect. This passive playback method is simple and practical, but the picture viewing effect is not good and cannot meet the increasing demand for viewing movies. Unlike the passive playback method, the active playback method mainly relies on the electronic device "shutter" installed on the 3D glasses to switch the left and right eye pictures during playback. The picture viewing effect is good, but there are problems such as difficulty in installation and maintenance, poor playback stability, etc., which will have a great impact on the operation of LED theaters.

[0003] The 3D movie system using active playback mainly includes an LED movie screen 90, a signal processor 92, an infrared (radio frequency) signal transmitter 91, a playback controller 93 and 3D glasses. Figure 1 and Figure 2 , the LED movie screen 90 is composed of a plurality of LED light boards 94. The LED light board 94 includes a plurality of LED lamp beads. One LED light board 94 is equipped with a control box for driving and controlling the LED lamp beads to light up and down. The control box of each LED light board 94 is connected to a playback controller 93 for controlling the playback of the picture. In order to avoid obstruction, a plurality of infrared signal transmitters 91 are horizontally distributed on the top of the LED movie screen 90 symmetrically along the width direction of the LED movie screen 90. In order to cover the entire area and have no dead angle of emission, generally 2-4 are evenly distributed. The playback controller 93 is connected to each infrared signal transmitter 91 through a signal processor 92. The signal processor 92 is used for synchronization signals. Specifically, it is used to synchronize the signal emitted by the infrared signal transmitter 91 (used to start the "shutter" on the 3D glasses to switch the left and right eye pictures) with the playback signal (lighting and turning off) of each LED light board of the LED movie screen 90. In order to facilitate the later parameter setting and maintenance, the signal processor 92 and the playback controller 93 are generally installed at the bottom position on one side of the LED movie screen 90.

[0004] From the actual playback, it can be found that the above 3D movie system has the following defects: First, during the actual playback, if Figure 1, the infrared signal transmitter 91 needs to cover the front and rear rows of the viewing platform 95 at the same time, and the span is large, and the signal reception effect at the corners of the viewing platform 95 is poor. Second, if a certain infrared signal transmitter 91 fails, it will greatly affect the signal reception effect, and the picture viewing effect cannot be ensured. Utility Model Content

[0005] The purpose of the utility model is to provide an LED movie screen and a 3D movie system. The LED movie screen makes infrared signals evenly distributed and directly emitted from the front of the LED movie screen to the viewing platform, without dead angles, and the signal receiving effect is consistent at any position, so that the picture playback effect is guaranteed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An LED movie screen comprises an LED light box, wherein a plurality of the LED light boxes are regularly stacked in a matrix form and fixed in a rectangular shape, wherein: the LED light box comprises a box body, a plurality of LED light panels are arranged on a playback surface of the box body, all of the LED light panels are regularly arranged in a matrix form and spliced ​​and fixed to each other, each of the LED light panels is equipped with a light panel control module, and the light panel control module is arranged in a control box; each of the LED light panels comprises a plurality of LED lamp beads regularly arranged in a matrix form and a plurality of infrared signal transmitters regularly arranged in a matrix form, the infrared signal transmitters are located between adjacent LED lamp beads, the number of the LED lamp beads is much greater than the number of the infrared signal transmitters, and the infrared signal transmitters and the LED lamp beads are connected to the light panel control module.

[0008] Preferably, the LED lamp beads are arranged on a lamp bead mounting frame, the LED light board is formed by splicing and fixing a plurality of the lamp bead mounting frames, and the infrared signal transmitter is embedded at the intersection of four corners of four adjacent lamp bead mounting frames.

[0009] Preferably, the light board control module includes a central processing unit, a display driving circuit and an infrared emission driving circuit, the central processing unit is connected to the playback controller, the central processing unit is connected to the LED lamp beads via the display driving circuit, and the central processing unit is connected to the infrared signal transmitter via the infrared emission driving circuit.

[0010] Preferably, the light board control module also includes a power distribution circuit, which is connected to an external power control box and provides power to the central processing unit, the LED lamp beads and the infrared signal transmitter.

[0011] A 3D movie system comprises the LED movie screen, the playback controller and 3D glasses worn by the audience, wherein the playback controller is connected to each of the light board control modules and is placed at the bottom of one side of the LED movie screen.

[0012] Preferably, the 3D glasses include a frame, two liquid crystal lenses are embedded in the frame, a circuit board is installed in the middle of the frame, an infrared signal receiver is arranged above the circuit board, the infrared signal receiver is connected to the circuit board, and the circuit board is connected to the two liquid crystal lenses.

[0013] The advantages of the utility model are:

[0014] 1. The infrared signal transmitters in the utility model are evenly distributed on the entire LED movie screen. All the infrared signals emitted are horizontally emitted from the front of the movie screen to the viewing platform. There is no dead angle for emission. The signal reception effect at any position of the viewing platform is good and consistent.

[0015] 2. In the present invention, a large number of infrared signal transmitters are arranged, and the multiple points are mutually redundant. Even if an individual infrared signal transmitter fails, it will not affect the overall signal reception effect, and the picture playback effect is guaranteed.

[0016] 3. The LED movie screen of the utility model can be simply spliced ​​and stacked, and the installation and subsequent maintenance costs are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram illustrating the active playback mode of an existing LED movie screen.

[0018] Figure 2 It is a main view schematic diagram of an existing LED movie screen.

[0019] Figure 3 It is a schematic diagram for explaining the playing of the LED movie screen of the utility model.

[0020] Figure 4 It is a main schematic diagram of the LED movie screen of the utility model.

[0021] Figure 5 It is a schematic diagram of the structural composition of the LED light board.

[0022] Figure 6 This is a schematic diagram of the composition of the light board control module.

[0023] Figure 7 is a schematic diagram of 3D glasses. DETAILED DESCRIPTION

[0024] like Figures 3 to 7As shown, the utility model proposes an LED movie screen 10, including an LED light box 20, a plurality of LED light boxes 20 are regularly stacked and fixed in a matrix form, and are in a rectangular shape, wherein: the LED light box 20 includes a box body, a plurality of LED light panels 30 are arranged on the playback surface of the box body, all the LED light panels 30 are regularly arranged in a matrix form and spliced ​​and fixed to each other, each LED light panel 30 is equipped with a light panel control module 50, and the light panel control module 50 is arranged in a control box; each LED light panel 30 includes a plurality of LED lamp beads 31 regularly arranged in a matrix form and a plurality of infrared (radio frequency) signal transmitters 32 regularly arranged in a matrix form, the infrared signal transmitter 32 is located between adjacent LED lamp beads 31, the number of LED lamp beads 31 is much larger than the number of infrared signal transmitters 32, and the infrared signal transmitter 32 and the LED lamp beads 31 are connected to the light panel control module 50.

[0025] For the LED light board 30 , the number of rows of infrared signal transmitters 32 is not less than 2 and the number in each row is not less than 2, that is, it is at least regularly arranged in a 2×2 matrix form, and the number of LED lamp beads 31 is much larger than the number of infrared signal transmitters 32 .

[0026] Similarly, in the present invention, the number of rows of the LED light box 20 , the LED light board 30 , and the LED lamp beads 31 is no less than 2, and the number of each row is no less than 2.

[0027] In the actual design, the LED lamp bead 31 is arranged on the lamp bead mounting frame 33, the LED light board 30 is formed by splicing and fixing multiple lamp bead mounting frames 33, and the infrared signal transmitter 32 is preferably embedded in the intersection of the four corners of four adjacent lamp bead mounting frames 33 without limitation, wherein the lamp bead mounting frame 33 is provided with a groove for accommodating the infrared signal transmitter 32 (not shown in the figure).

[0028] like Figure 5 , the figure shows a LED lamp board 30 formed by 8×12 lamp bead mounting frames 33 and arranged with 3×5 infrared signal transmitters 32. Usually, the LED lamp bead 31 is located at the center of the lamp bead mounting frame 33, and the infrared signal transmitters 32 are arranged separately. Further, Figure 4 The LED movie screen 10 is shown as a situation where 9×10 LED light boxes 20 are regularly stacked and fixed. The playing surface formed by the entire LED movie screen 10 is in a rectangular shape. In addition, Figure 4 The LED light box 20 is exemplarily shown as being formed by splicing 2×2 LED light panels 30. Of course, the arrangement form and number of the LED light box 20, LED light panels 30, lamp bead mounting frame 33 (or LED lamp beads 31) and infrared signal transmitters 32 are not limited to the above.

[0029] For example, a common LED movie screen 10 with a width of 16 meters is formed by 144 LED light boxes 20 stacked and fixed regularly. Considering production installation and cost control, the light-emitting surface of the LED light box 20 is generally designed to be 0.5-1 square meters. Each LED light box 20 is equipped with 4 LED light panels 30, and the entire screen has a total of 576 LED light panels 30. Each LED light panel 30 is evenly distributed with 3×5 infrared signal transmitters 32, thereby reaching nearly 10,000 infrared signal emission points. Figure 4 The height and width directions of the LED movie screen 10 are shown.

[0030] For each LED light board 30, as Figure 6 The light board control module 50 includes a central processing unit 51, a display driving circuit 52 and an infrared emission driving circuit 53. The central processing unit 51 is connected to the playback controller 60. The central processing unit 51 is connected to the LED lamp bead 31 via the display driving circuit 52. The central processing unit 51 is connected to the infrared signal transmitter 32 via the infrared emission driving circuit 53.

[0031] The light board control module 50 also includes a power distribution circuit 55 , which is connected to an external power control box 70 . The power distribution circuit 55 supplies power to the central processing unit 51 , the LED lamp beads 31 and the infrared signal transmitter 32 .

[0032] In addition, the light board control module 50 also includes a signal status indicator light 54, which is connected to the central processor 51, and the power distribution circuit 55 supplies power to the signal status indicator light 54. There are multiple signal status indicator lights 54, which are used to indicate the working status of the LED lamp beads 31 and the infrared signal transmitter 32, and are not limited.

[0033] In the present invention, the light board control module 50 is used to drive the LED lamp beads 31 to switch the left and right eye images, and drive the infrared signal transmitter 32 to emit infrared signals, triggering the 3D glasses 80 to switch the liquid crystal display state of the liquid crystal lens 81 thereon (that is, switching the state of the liquid crystal transmitting light).

[0034] In the present invention, the display driving circuit 52 and the infrared emitting driving circuit 53 include an LED matrix driver, for example, an LED matrix driver of model LP5890 is selected.

[0035] In order to speed up the response speed of the LED lamp bead 31 and the infrared signal transmitter 32 and improve the synchronization effect, the LED lamp bead 31 and the infrared signal transmitter 32 are always in a powered state. When the LED lamp bead 31 needs to be turned on, a driving signal is input to the LED lamp bead 31 through the display driving circuit 52 (that is, a certain driving voltage is applied to the LED lamp bead 31, and the driving voltage is much smaller than the power supply voltage, so that the driving voltage is just applied to the LED lamp bead 31, and the LED lamp bead 31 works under the current voltage (power supply voltage plus driving voltage)), so the LED lamp bead 31 emits light and becomes brighter, otherwise, the LED lamp bead 31 is extinguished. When it is necessary to turn on the infrared signal transmitter 32, a driving signal is input to the infrared signal transmitter 32 through the infrared transmission driving circuit 53 (that is, a certain driving voltage is applied to the infrared signal transmitter 32, and the driving voltage is much smaller than the power supply voltage, so that as soon as the driving voltage is applied to the infrared signal transmitter 32, the infrared signal transmitter 32 works under the current voltage (power supply voltage plus driving voltage)), so the infrared signal transmitter 32 transmits an infrared signal, otherwise, the infrared signal transmitter 32 does not transmit an infrared signal.

[0036] The power distribution circuit 55 is mainly used to convert the voltage input by the power control box 70 into AC / DC, and then output the voltage to the corresponding device after the voltage is changed. The power control box 70 is mainly used to provide electric energy to the outside. The power distribution circuit 55 and the power control box 70 are well-known technologies in the art and will not be described in detail here.

[0037] The central processing unit 51, the LED lamp bead 31, and the infrared signal transmitter 32 are existing devices in the art, and thus will not be described in detail here.

[0038] The utility model also proposes a 3D movie system, including the above-mentioned LED movie screen 10 of the utility model, a playback controller 60 and 3D glasses 80 worn by the audience. The playback controller 60 is connected to the light board control module 50 via a cable, and the playback controller 60 is placed at the bottom position of one side of the LED movie screen 10.

[0039] In actual implementation, depending on actual needs, the light board control module 50 can be connected to the playback controller 60 via a signal processor, or the light board control module 50 can also have the function of a signal processor.

[0040] like Figure 7 The 3D glasses 80 include a frame, on which two liquid crystal lenses 81 are embedded, a circuit board 82 is installed in the middle of the frame, an infrared signal receiver 83 is arranged above the circuit board 82, the infrared signal receiver 83 is connected to the circuit board 82, and the circuit board 82 is connected to the two liquid crystal lenses 81.

[0041] In the present invention, the playback controller 60 and the 3D glasses 80 are existing devices or components of LED cinemas. The playback controller 60 is mainly used to control the playback of left and right eye images.

[0042] For the 3D glasses 80, the infrared signal receiver 83 is used to receive the infrared signal emitted by the infrared signal transmitter 32. After receiving the infrared signal, the infrared signal receiver 83 gives feedback to the circuit board 82, so that the circuit board 82 controls the liquid crystal lens 81 to switch the state or not, that is, controls whether the liquid crystal display state of the liquid crystal lens 81 is switched. In actual implementation, each liquid crystal lens 81 controls the transmittance of light (such as light transmission or non-light transmission) by adjusting the liquid crystal properties, so that the eyes see different images (left eye or right eye picture).

[0043] Based on the above design, each LED lamp bead 31 is evenly distributed on the entire LED movie screen 10, and each infrared signal transmitter 32 is located on the LED light board 30, distributed between each LED lamp bead 31, and also evenly distributed on the entire LED movie screen 10. In this way, the infrared signal transmitter 32 directly faces the viewing platform 40, and the infrared signals simultaneously emitted by each infrared signal transmitter 32 are horizontally emitted from the front of the LED movie screen 10 to the viewing platform 40, so that the entire area of ​​the viewing platform 40 can be covered. The scale is large, the number is large, the signal is strong, and there is no dead angle for emission. The receiving effect of the infrared signal receiver 83 on the 3D glasses 80 worn by the audience sitting at any position on the viewing platform 40 can be consistent. In addition, because the infrared signal transmitter 32 is large in scale and large in number, even if an individual infrared signal transmitter 32 fails, it will not affect the overall signal reception effect or playback stability, and the viewing effect is good.

[0044] When playing a 3D movie, the playback controller 60 continuously and alternately outputs the left eye picture and the right eye picture. During playback, the central processor 51 applies a drive signal to the corresponding LED lamp beads 31 through the display drive circuit 52, so that the corresponding LED lamp beads 31 emit light to achieve the playback of the left eye picture or the right eye picture.

[0045] In the process of playing the left and right eye images, the central processor 51 synchronously applies a driving signal to the infrared signal transmitter 32 through the infrared emission driving circuit 53, so that the infrared signal transmitter 32 works and emits an infrared (radio frequency) signal. When the infrared signal is captured by the infrared signal receiver 83 on the 3D glasses 80, the circuit board 82 on the 3D glasses 80 controls the switching state of the two liquid crystal lenses 81, that is, the liquid crystal on the liquid crystal lenses 81 switches from one display state to another display state (the two display states are opposite), thereby completing the conversion of binocular image reception. In this way, the above cycle is repeated when the left and right eye images are played continuously, and a complete 3D movie effect can be achieved by relying on the visual difference between the left and right eyes.

[0046] The advantages of the utility model are:

[0047] The LED movie screen of the utility model is used for active playback. Infrared signals are evenly distributed from the front of the LED movie screen and directly emitted to the viewing platform. There is no dead angle for emission. The signal receiving effect is consistent at any position. The picture playback effect is guaranteed. The installation and maintenance are low, and it is suitable for promotion and popularization.

[0048] The above are preferred embodiments of the present invention and the technical principles used therein. For those skilled in the art, any obvious changes such as equivalent transformations, simple replacements, etc. based on the technical solution of the present invention, without departing from the spirit and scope of the present invention, are within the protection scope of the present invention.

Claims

1. An LED movie screen, characterized in that: It comprises an LED light box, a plurality of the LED light boxes are regularly stacked in a matrix form and fixed in a rectangular shape, wherein: the LED light box comprises a box body, a plurality of LED light panels are arranged on the playback surface of the box body, all the LED light panels are regularly arranged in a matrix form and spliced ​​and fixed to each other, each of the LED light panels is equipped with a light panel control module, and the light panel control module is arranged in a control box; each of the LED light panels comprises a plurality of LED lamp beads regularly arranged in a matrix form and a plurality of infrared signal transmitters regularly arranged in a matrix form, the infrared signal transmitters are located between adjacent LED lamp beads, the number of the LED lamp beads is much greater than the number of the infrared signal transmitters, and the infrared signal transmitters and the LED lamp beads are connected to the light panel control module.

2. The LED movie screen according to claim 1, characterized in that: The LED lamp beads are arranged on the lamp bead installation frame, the LED light board is formed by splicing and fixing a plurality of the lamp bead installation frames, and the infrared signal transmitter is embedded at the intersection of the four corners of four adjacent lamp bead installation frames.

3. The LED movie screen according to claim 1, characterized in that: The light board control module includes a central processing unit, a display driving circuit and an infrared emission driving circuit. The central processing unit is connected to the playback controller, the central processing unit is connected to the LED lamp beads via the display driving circuit, and the central processing unit is connected to the infrared signal transmitter via the infrared emission driving circuit.

4. The LED movie screen as claimed in claim 3, characterized in that: The light board control module also includes a power distribution circuit, which is connected to an external power control box and supplies power to the central processing unit, the LED lamp beads and the infrared signal transmitter.

5. A 3D movie system, characterized in that: It comprises the LED movie screen according to any one of claims 1 to 4, a playback controller and 3D glasses worn by the audience, wherein the playback controller is connected to each of the light board control modules, and the playback controller is placed at the bottom of one side of the LED movie screen.

6. The 3D movie system according to claim 5, characterized in that: The 3D glasses include a frame, two liquid crystal lenses are embedded in the frame, a circuit board is installed in the middle of the frame, an infrared signal receiver is arranged above the circuit board, the infrared signal receiver is connected to the circuit board, and the circuit board is connected to the two liquid crystal lenses.

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