LED movie screen for cinema

Abstract

The utility model discloses an LED movie screen for a cinema, which comprises a rectangular LED module, a plurality of LED modules are mutually connected to form a rectangular screen, a suspender is transversely arranged at the top of the screen, a plurality of hanging rings are arranged on the suspender at intervals, and the hanging rings are used for being fixed on connecting pieces installed on an existing structural beam on a main structure floor. The screen is fixed below an existing structural beam, the screen is suspended and does not make contact with a floor, a rear frame is arranged behind the screen, a magnetic attraction body is fixed to the rear frame in the front direction, and the rear frame is in magnetic attraction connection with the screen through the magnetic attraction body so that the screen can be kept vertical. Compared with an existing LED movie screen, the LED movie screen is light in weight, rapid and convenient to build, high in installation precision, high in safety and suitable for popularization, and the display effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to an LED movie screen specially used in cinemas, belonging to the technical field of movie screens used in cinemas. Background Art

[0002] Most of the LED movie screens currently used in theaters still use the structure of the multimedia display era, such as Figure 1 and Figure 2 , which includes an LED box 11. The LED box 11 includes an aluminum box frame 111, a steel front panel 112 is provided in front of the box frame 111, and a rear door panel 113 is provided at the rear of the box frame 111. A plurality of grids are regularly provided on the front panel 112, and an LED module 114 is screwed on each grid. The LED module 114 includes a plastic substrate, and an LED light board is installed on the plastic substrate (the LED light board includes a circuit board and LED lights arranged thereon). When constructing, the conventional practice is to install the base 13 on the floor 40 of the theater, and then stack the LED box 11 on the base 13 from bottom to top, and finally integrate the required rectangular screen, and in the process of installing the LED box 11, it is necessary to simultaneously install the rear frame 12 behind it to support and fix the LED box 11 layer by layer.

[0003] From the actual implementation, it can be found that the existing LED movie screen has the following disadvantages: First, although the box frame 111 is made of aluminum and the substrate of the LED module 114 is made of plastic to reduce weight, the front panel 112 must be made of steel to ensure installation accuracy. Because the size of the LED box 11 is large and the number of stacks is large, the weight of the entire LED movie screen is still very large (about 300 kg / m2 converted by the projection area). Therefore, this causes a weight accumulation effect in the process of installing the LED box 11 layer by layer from bottom to top, and the deformation cannot be well controlled. In addition, during the installation process, the LED lamp board or lamp beads on the lower LED box 11 are easily damaged, and it is difficult to implement protection. On the other hand, the substrate of the LED module 114 is made of plastic, which reduces the processing accuracy and rigidity, which leads to poor installation accuracy, low strength and large deformation of the LED module 114. Second, the rear frame 12 is to support and fix the LED box 11, and its structure is bound to be complex and heavy. Welding measures are usually taken, and on-site construction is difficult. In addition, theaters are generally located on high floors, and the load-bearing capacity of the main structure's floor (the floor is part of floor 20) is limited. The existing LED movie screens have basically reached the load-bearing limit of the floor, posing a great safety risk.

[0004] It can be seen that designing an LED movie screen that is suitable for the fixed location of the cinema, lightweight, high-precision, easy to install, safe and reliable, is an urgent problem that needs to be solved. Utility Model Content

[0005] The purpose of the present utility model is to provide an LED movie screen for cinemas, which, compared with existing LED movie screens, is light in weight, quick and convenient to set up, has high installation accuracy, guaranteed display effect, and high safety, and is suitable for popularization.

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

[0007] An LED movie screen for cinemas includes rectangular LED modules. A plurality of the LED modules are connected to each other to form a rectangular screen. A suspension rod is horizontally arranged at the top of the screen. A plurality of hanging rings are arranged at intervals on the suspension rod. The hanging rings are used to be fixed on connectors installed on existing structural beams on the main structure floor, so that the screen is fixed below the existing structural beam. The screen is suspended and does not contact the floor. A rear frame is arranged behind the screen. Magnetic bodies are fixed on the rear frame facing forward. The rear frame is magnetically connected to the screen through the magnetic bodies, so that the screen is kept vertical.

[0008] The advantages of the present utility model are as follows:

[0009] 1. The LED movie screen of the present utility model has no traditional box design. The whole adopts a load-bearing method of being fixed (hanging) on the existing structural beam of the main structure, and only a simple rear frame for keeping the LED movie screen in a vertical state needs to be arranged at the back. Compared with existing LED movie screens, welding of the rear frame and stacking of heavy boxes are avoided, the construction process is simplified, the construction progress is accelerated. Importantly, the original direct support on the fragile floor slab is changed to load-bearing by the structural beam with better strength. At the same time, without boxes, the weight of the whole screen is also greatly reduced. The fixing (hanging) method based on the existing structural beam makes the force on the main structure more uniform, and the safety is greatly improved.

[0010] 2. The LED modules of the present utility model adopt metal frames, and tight and quick connection can be achieved between the LED modules. Moreover, the installation strength is good, the deformation is small, and the installation accuracy is guaranteed, ensuring the display effect.

[0011] 3. Based on its own structural design, the LED movie screen of the present utility model can adopt a top-down setup method, avoiding the use of a rear frame with complex structure and large weight. The top-down installation method can better control the deformation problem and will not affect the already completed LED modules above during the installation process, greatly reducing the damage rate and ensuring the display effect. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of an existing LED movie screen in a cinema.

[0013] Figure 2 It is a schematic diagram of the LED box of the existing LED movie screen seen from the back.

[0014] Figure 3 It is a schematic structural diagram of the LED movie screen for a cinema of the present utility model.

[0015] Figure 4 It is a three-dimensional schematic diagram of the LED movie screen for a cinema of the present utility model when viewed from the back (the rear frame is not shown).

[0016] Figure 5 It is a side view schematic diagram of the LED movie screen for a cinema of the present utility model.

[0017] Figure 6 is Figure 5 a partially enlarged schematic diagram of the bottom.

[0018] Figure 7 It is a three-dimensional schematic diagram of the LED module when viewed from the back.

[0019] Figure 8 It is a three-dimensional schematic diagram of the LED module when viewed from the front.

[0020] Figure 9 It is a connection schematic diagram between LED modules.

[0021] Figure 10 It is a schematic diagram of the grouped assembly of LED modules and the installation of the control box. Specific embodiments

[0022] As Figures 3 to 10 , the present utility model provides an LED movie screen for a cinema, which includes a rectangular LED module 50. A plurality of LED modules 50 are connected to each other to form a rectangular screen 90. A suspension rod 70 is horizontally arranged at the top of the screen 90. A plurality of hanging rings 71 are arranged at intervals on the suspension rod 70. The hanging rings 71 are used to be fixed on the connecting pieces installed on the existing structural beam 30 on the main structure floor 20, so that the screen 90 is fixed below the existing structural beam 30. The screen 90 is suspended and does not contact the floor 40. A rear frame 80 is arranged at the back of the screen 90. A magnetic body 81 is fixed forward on the rear frame 80. The rear frame 80 is magnetically connected to the screen 90 through the magnetic body 81, so that the screen 90 is kept vertical.

[0023] As Figure 7 and Figure 8, the LED module 50 includes a rectangular frame 51 made of metal. On the rear sides of two adjacent sides of the frame 51, connecting pieces 52 protrude outward. Mounting holes 520 are provided on the connecting pieces 52. On the rear sides of the remaining two adjacent sides of the frame 51, connecting grooves 53 are recessed inward. Assembly holes 530 are provided in the connecting grooves 53. An LED lamp board 55 is fixed to the front side of the frame 51, and the LED lamp board 55 covers the open end of the frame 51. After the LED lamp board 55 is fixed to the metal frame 51, insulation protection treatment needs to be carried out. The design of the metal frame improves the structural strength, reduces deformation, and improves the display effect.

[0024] The LED lamp board 55 is a device already existing in the art. Generally, the LED lamp board 55 includes a circuit board, and LED lamps are arranged on the circuit board.

[0025] Furthermore, the connecting piece 52 of one LED module 50 among two adjacent LED modules 50 extends into the connecting groove 53 of the other LED module 50, so as to realize the fixed connection of the two adjacent LED modules 50 through a fixing member 54, where: the frames 51 of the two adjacent LED modules 50 after fixed connection abut against each other, so that the two adjacent LED lamp boards 55 are adjacent to each other, thereby ensuring the display effect.

[0026] In actual application, the fixing member 54 is, for example, a screw, and the screw is screwed onto the mounting hole 520 on the connecting piece 52 and the assembly hole 530 in the connecting groove 53. Another example is that the fixing member 54 is a bolt and a matching nut, and of course it is not limited.

[0027] In the present utility model, the frame 51 is made of a light metal alloy material, such as an aluminum alloy or a magnesium alloy material, and is not limited.

[0028] In the present utility model, the LED lamp board 55 is pre-installed on the frame 51 to form the LED module 50. On-site, only the LED modules 50 need to be directly spliced with each other. Compared with the prior art, the present utility model changes the two-step process of first installing the LED lamp board on the LED box body and then fixing the LED box bodies to each other. It can be seen that the process of the present utility model is simpler, the positioning between the LED modules 50 is more accurate, and the generation of installation errors is avoided.

[0029] Such as Figure 7 , on one inner side of the frame 51 of the LED module 50, a cable interface 56 is provided, and the cable led out from the LED lamp board 55 installed on the frame 51 is connected to the cable interface 56.

[0030] In the present utility model, all the LED modules 50 are controlled uniformly or in groups.

[0031] For grouped control, two adjacent horizontal rows of LED modules 50 in each column form a group. Among them: for a group of LED modules, a splicing vertical seam 57 is formed between two horizontally adjacent LED modules 50, and the cable interfaces 56 of two horizontally adjacent LED modules 50 are symmetrically arranged with respect to the splicing vertical seam 57; a control box 60 is installed at the entire splicing vertical seam 57, and the control box 60 covers all or part of each cable interface 56, the connecting piece 52 between two cable interfaces 56, the mounting holes 520 thereon, the connecting groove 53 thereon, and the assembly holes 530 thereon; a control board is provided inside the control box 60, and the control board is connected to the cable of the LED light board 55 via the cable interface 56.

[0032] Furthermore, in order to protect data security, a safety lock 61 should be provided on the control box 60. In addition, before unlocking, the LED module 50 cannot be disassembled alone, and the protected playback content cannot be obtained through the data interface.

[0033] As Figure 10 , the figure shows a case where 2 columns and 4 rows of LED modules 50 are connected as a group, and a control box 60 is installed vertically for this group.

[0034] Of course, the control box 60 can also be installed horizontally without limitation.

[0035] In actual implementation, the control board inside the control box 60 can communicate with external devices in a wireless or wired manner to drive the LEDs on the LED module 50 to turn on and off, realizing display.

[0036] As Figure 5 and Figure 6 , the magnetic body 81 is designed to have an I-shaped cross-section, for example, and the magnetic body 81 can be magnetically attracted to the control box 60 on the screen 90. This magnetic connection method, on the one hand, maintains the stability of the screen 90, and on the other hand, the horizontal magnetic attraction method does not affect the load-bearing in the up and down directions. Of course, in addition to being magnetically attracted to the control box 60, the magnetic body 81 can also be designed to be magnetically attracted to specific parts on the frame 51 without limitation.

[0037] In the present utility model, the floor above the screen 90 no longer directly bears the weight of the entire LED movie screen. In addition, the rear frame 80 only serves to maintain the vertical state of the screen 90 and does not need to be fixed to the screen 90, so its structure can be greatly simplified without welding operations. In actual design, the rear frame 80 is a steel frame structure, and the steel frame structure is a welded steel frame or an assembled scaffolding structure, of course, without limitation.

[0038] As Figure 3, a connecting member is installed on the lower or side surface of the existing structural beam 30. The connecting member is, for example, a hook 31. That is, the suspension ring 71 is hooked on the hook 31 installed on the existing structural beam 30 on the main structure floor, so that the screen 90 is hooked below the existing structural beam 30. Of course, other forms similar to the hook 31 can also be used to achieve fixation.

[0039] The present utility model defines the front-back, left-right, and up-down directions. For example, Figure 5 , the up-down direction is the vertical direction, the left-right direction is the horizontal direction, the front-back direction is the direction perpendicular to the left-right direction in the horizontal plane, the front is the part close to the audience, and the back is the part far from the audience.

[0040] In actual implementation, the LED movie screen of the present utility model is built on the floor of the main structure. For example, Figure 3 , structural beams are constructed on the main structure floor 20, that is, existing structural beams 30. The floor 40 is constructed on the lower floor 20 or on the upper surface of the floor slab. The rear frame 80 is arranged on the floor 40. The floor slab is the load-bearing part of the floor 20 and belongs to a part of the floor 20. The floor slab is conventionally arranged on the structural beam. The floor slab is relatively thin, such as 20 cm thick, while the cross-section of the structural beam 30 is, for example, 60 cm × 60 cm, and it is generally connected to the main structure column with strong load-bearing capacity.

[0041] In such an environment, the present utility model completes the construction in a top-down manner, specifically including the steps:

[0042] Install a connecting member (such as a hook 31) on the existing structural beam 30 on the main structure floor 20;

[0043] Fix the suspension rod 70 on the connecting member;

[0044] Install the LED modules 50 from top to bottom below the suspension rod 70 to form a rectangular screen 90. Among them, the horizontal adjacent LED modules 50 and the vertical adjacent LED modules 50 are tightly spliced through the design of the connecting piece 52, the connecting groove 53, and the fixing piece 54;

[0045] Each group of LED modules 50 is commonly installed with a control box 60. Among them, the control board in the control box 60 is connected to the cable led out from the LED lamp board 55 through the cable interface 56;

[0046] Install the rear frame 80 behind the screen 90 and magnetically connect the screen 90 and the rear frame 80;

[0047] Complete the construction of the LED movie screen. Among them, the screen 90 is in a suspended state and does not contact the floor 40.

[0048] The advantages of the present utility model are:

[0049] 1. The LED movie screen of the present utility model has no traditional box design. The whole adopts a load-bearing method of being fixedly (hanging) on the existing structural beam of the main structure, and only a simple rear frame for keeping the LED movie screen in a vertical state needs to be set at the back. Compared with the existing LED movie screens, the welding of the rear frame and the stacking of heavy boxes are avoided, the construction process is simplified, and the construction progress is accelerated. Importantly, the direct support on the original fragile floor slab is changed to the load-bearing of the structural beam with better strength. At the same time, without boxes, the weight of the whole screen is greatly reduced. The fixed (hanging) method based on the existing structural beam makes the force on the main structure more uniform, and the safety is greatly improved.

[0050] 2. The LED modules of the present utility model adopt metal frames, and tight and rapid connection can be achieved between the LED modules. Moreover, the installation strength is good, the deformation is small, and the installation accuracy is guaranteed, ensuring the display effect.

[0051] 3. Based on its own structural design, the LED movie screen of the present utility model can adopt a top-down construction method, avoiding the use of a rear frame with complex structure and large weight. The top-down installation method can better control the deformation problem and will not affect the LED modules that have been completed above during the installation process, greatly reducing the damage rate and ensuring the display effect.

[0052] The above is the preferred embodiment of the present utility model and the technical principles applied. For those skilled in the art, any obvious changes such as equivalent transformation and simple substitution based on the technical solution of the present utility model without departing from the spirit and scope of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A LED movie screen for a cinema, characterized in that: It comprises a rectangular LED module, a plurality of which are interconnected to form a rectangular screen, a suspension rod is horizontally arranged on the top of the screen, a plurality of suspension rings are arranged at intervals on the suspension rod, the suspension rings are used to be fixed to a connecting piece installed on an existing structural beam on the main structure floor, so that the screen is fixed under the existing structural beam, the screen is suspended in the air and does not contact the floor, a rear frame is arranged behind the screen, a magnetic body is fixed on the rear frame facing forward, and the rear frame is magnetically connected to the screen via the magnetic body, so that the screen remains vertical.

2. The LED movie screen for cinema as claimed in claim 1, characterized in that: The LED module includes a rectangular frame made of metal material, and the rear side surfaces of two adjacent sides of the frame are provided with connecting plates protruding outward, and the connecting plates are provided with mounting holes. The rear side surfaces of the remaining two adjacent sides of the frame are provided with connecting grooves concave inward, and the connecting grooves are provided with assembly holes. The front side of the frame is fixed with an LED light board.

3. The LED movie screen for cinema as claimed in claim 2, characterized in that: The connecting piece of one of the two adjacent LED modules extends into the connecting groove of the other LED module to achieve fixed connection between the two adjacent LED modules through a fixing member, wherein: the frame of the two adjacent LED modules after fixed connection abut against each other so that the two adjacent LED light panels are close to each other, thereby ensuring the display effect.

4. The LED movie screen for cinema as claimed in claim 2, characterized in that: The frame is made of lightweight metal alloy.

5. The LED movie screen for cinema as claimed in claim 3, characterized in that: A cable interface is provided on the inner side of one side of the frame of the LED module, and the cable led out from the LED light board installed on the frame is connected to the cable interface.

6. The LED movie screen for cinema as claimed in claim 5, characterized in that: The two horizontally adjacent columns and multiple rows of LED modules form a group, wherein: a vertical joint is formed between two horizontally adjacent LED modules, and the cable interfaces of two horizontally adjacent LED modules are symmetrically arranged with the vertical joint as the axis; a control box is installed at the entire vertical joint, and the control box covers all or part of the cable interfaces, the connecting pieces and the connecting grooves; a control board is arranged in the control box, and the control board is connected to the cable of the LED light board via the cable interface.

7. The LED movie screen for cinema as claimed in claim 6, characterized in that: The magnetic body is magnetically attracted to the control box or the frame on the screen.

8. The LED movie screen for cinema as claimed in claim 1, characterized in that: The rear frame is a steel frame structure.

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