Data‑secure display device and tiled screen

Abstract

A data‑secure display device and a tiled screen. The display device comprises a housing (1) and a display module (2); a cavity (10) is provided inside the housing (1); the cavity (10) has a front side end (1a) provided with an opening (1b), and a rear side end (1c) being a closed end; video receiving circuit boards (3) and inner door covers (4) are provided inside the cavity (10); the inner door covers (4) are locked in the cavity (10) by means of locking members (a) and cover the video receiving circuit boards (3); the display module (2) is located outside the inner door covers (4); the display module (2) is fixedly connected to the housing (1) and covers the opening (1b) of the cavity (10); the video receiving circuit boards (3) are communicatively connected to a video source; the video receiving circuit boards (3) are electrically connected to the display module (2) by means of electrical connectors (b) passing through the inner door covers (4), so as to transmit electrical energy and video signals to the display module (2). The inner door covers (4) can isolate the video receiving circuit boards (3) from the outside, thereby preventing unauthorized access to or tampering with the video receiving circuit boards (3), and achieving the purpose of preventing unauthorized access to or tampering with video signals.

Description

Data security display device and spliced screen

[0001] The present application claims priority to the Chinese patent application No. 2024226683367, filed on October 31, 2024, and entitled "A data security display device and spliced screen", with the State Intellectual Property Office of China, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application belongs to the field of display devices, and in particular relates to a data security display device and spliced screen. BACKGROUND

[0003] In the existing video projection system based on LED spliced screen, the LED spliced screen is spliced by multiple LED boxes. After the video signal processor receives the externally input video signal of the overall picture, the video signal processor splits the video signal of the overall picture according to the number, size and position of the LED boxes to obtain multiple video signals of split pictures corresponding to the LED boxes, and sends the video signals of the split pictures to the corresponding LED boxes respectively (or in branches). Each LED box displays the split picture after analyzing the video signal of the split picture, thereby realizing the display of the overall picture by the LED spliced screen.

[0004] For some videos with copyright such as movies and advertisements, the existing video projection system lacks protection mechanisms for each component, which makes the video signal easy to be obtained from multiple positions, and the problem of video signal theft or tampering is likely to occur. TECHNICAL PROBLEM

[0005] The purpose of the present application is to provide a data security display device and spliced screen which can solve the problem of video signal theft or tampering in the existing LED spliced screen video projection system. TECHNICAL SOLUTION

[0006] The present application is implemented as follows: a data security display device includes a housing and a display module. The housing has a cavity inside. The front end of the cavity has an opening, and the rear end is a closed end.

[0007] A video receiving circuit board and an inner door cover are arranged in the cavity. The inner door cover is locked in the cavity by a locking member and covers the video receiving circuit board. The display module is located outside the inner door cover and is fixedly connected to the housing and covers the opening of the cavity.

[0008] The video receiving circuit board is in communication connection with a video source. The video receiving circuit board is electrically connected to the display module through an electrical performance connector penetrating the inner door cover to supply electrical energy and video signals to the display module.

[0009] In order to achieve the above object, the application further provides a spliced screen comprising at least two display devices as described above, and the adjacent display devices are electrically connected. Advantages

[0010] Compared with the prior art, the application has the advantages that the display device has a video receiving circuit board arranged in the cavity of the shell, the rear end of the cavity is a closed end and cannot be opened, and the video receiving circuit board in the cavity is covered by the inner door cover, so that the video receiving circuit board is isolated from the external space by the inner door cover, and the video receiving circuit board cannot be stolen or tampered with, thereby preventing the video signal from being stolen or tampered with. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a perspective view of a data secure display device according to an embodiment of the application;

[0012] Fig. 2 is an exploded structural view of the display device shown in Fig. 1;

[0013] Fig. 3 is an exploded structural view of the display device shown in Fig. 1 from another angle;

[0014] Fig. 4 is a top view of the display device shown in Fig. 1;

[0015] Fig. 5 is a sectional view of Fig. 4 along the section line A-A;

[0016] Fig. 6 is an enlarged view of the area A in Fig. 5;

[0017] Fig. 7 is a sectional view of Fig. 4 along the section line B-B. Embodiment of the application

[0018] In order to make the object, technical scheme and advantages of the application clearer, the application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and do not limit the application.

[0019] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] Referring to FIGS. 1-5, a display device for data security is provided, comprising a shell 1 and a display module 2, the shell 1 of the present embodiment is in the form of a box, the shell 1 has a cavity 10 inside, the front end 1a of the cavity 10 has an opening 1b, and the rear end 1c is a closed end.

[0021] The cavity 10 of the shell 1 is provided with a video receiving circuit board 3 and an inner door cover 4, the inner door cover 4 is locked in the cavity 10 by locking members a (such as screws, rivets and the like), and covers the video receiving circuit board 3.

[0022] The display module 2 is located outside the inner door cover 4, the display module 2 is fixedly connected with the shell 1, and covers the opening of the cavity 10.

[0023] The video receiving circuit board 3 is in communication connection with a video source, and the video receiving circuit board 3 is electrically connected with the display module 2 through an electrical performance connector b penetrating through the inner door cover 4, so as to deliver electrical energy and video signals to the display module 2.

[0024] Since the rear end 1c of the cavity 10 of the shell 1 is a closed end and cannot be opened, and the video receiving circuit board 3 in the cavity 10 is covered by the inner door cover 4, the inner door cover 4 can isolate the video receiving circuit board 3 from the outside space, preventing the video receiving circuit board 3 from being stolen or tampered with, thereby achieving the purpose of preventing video signals from being stolen or tampered with.

[0025] Further, a micro switch 5 is also arranged in the cavity 10, the micro switch 5 is connected between the video source and the video receiving circuit board 3, when the inner door cover 4 is touched (i.e. moved or opened), the micro switch 5 can be triggered to generate an open circuit signal to control the video source to stop transmitting video signals to the video receiving circuit board 3.

[0026] Furthermore, the video receiving circuit board 3 is equipped with a circuit break detection device 31. When the circuit loop consisting of the video receiving circuit board 3, the electrical performance connector b, and the display module 2 is broken, that is, when the connection circuit between the video receiving circuit board 3 and the display module 2 is disconnected or cut off, the circuit break detection device can be triggered to generate a circuit break signal to control the video source to stop transmitting video signals to the video receiving circuit board 3.

[0027] As can be seen, the display device in this embodiment has measures in place to prevent video from being stolen or tampered with in terms of both mechanical structure and signal control, thus providing multiple layers of protection.

[0028] To protect the connection lines between the video receiving circuit boards 3, a first cable protection cover 6a is also provided inside the outer casing 1. The first cable protection cover 6a is located between two adjacent inner door covers 4. The two adjacent video receiving circuit boards 3 are connected by a network cable c, and the first cable protection cover 6a covers the network cable. Preferably, the bottom wall 10 of the cavity 10 is provided with a groove 11 corresponding to the position of the first cable protection cover 6a, and the edge of the first cable protection cover 6a is embedded in the groove 11.

[0029] The outer casing 1 has a cable inlet 12 on its side, and the inner door cover 4 also has a cable inlet 43 on its side. External power supply lines and video input lines are connected to the video receiving circuit board 3 through the cable inlet 12. To protect the externally connected lines, a second cable protection cover 6b is provided between the cable inlet 12 of the outer casing 1 and the cable inlet of the inner door cover 4 in this embodiment. Similarly, as shown in Figure 7, the bottom wall 10 of the cavity 10 has a groove 11 corresponding to the positions of the inner door cover 4 and the second cable protection cover 6b. The edges of the inner door cover 4 and the second cable protection cover 6b are embedded in the groove 11. By embedding the first cable protection cover 6a, the second cable protection cover 6b, and the edges of the inner door cover 4 into the groove 11, the inner door cover 4 and the first and second cable protection covers 6a and 6b can be prevented from being pried open. Furthermore, if the inner door cover 4 and the first and second cable protection covers 6a and 6b are forcibly pried open from the outside, traces are easily left, serving as a warning to those who steal or tamper with them.

[0030] Please refer to Figures 5 and 6. To prevent theft or tampering from damaging or opening the device through the inlet 12 of the outer casing 1, the outer port of the second cable cover 6b is sealed by an inlet sealing plate 7. The inlet sealing plate 7 is fixedly connected to the side wall of the outer casing 1 by screws 8, with the head of the screws 8 located inside the second cable cover 6b. The inner end of the second cable cover 6b is pressed and fixed by the inner door cover 4, and its outer end presses against the inlet sealing plate 7. Furthermore, the outer port of the second cable cover 6b is embedded in the slot 13 of the inner wall of the outer casing 1. With the above structural design, after the device is installed, one end of the second cable cover 6b is pressed by the inner door cover 4, and the other end is embedded in the slot 13. Unless the inner door cover 4 is removed first, the second cable cover 6b and the inlet sealing plate 7 cannot be removed. However, if the inner door cover 4 is removed, the micro switch 5 will be triggered.

[0031] To achieve a fixed connection between the outer casing 1 and the display module 2, the bottom wall 10 of this embodiment extends into a first connecting portion 14, and the inner side of the display module 2 is provided with a second connecting portion 21. The first connecting portion 14 and the second connecting portion 21 are fixedly connected. In this embodiment, the first connecting portion 14 is columnar, and its top end is made of metal or a magnet. In this embodiment, the outer casing 1 is a die-cast box, and when the first connecting portion 14 is made of metal, it can be integrally formed with the outer casing 1. The second connecting portion 21 is a magnet, and the second connecting portion 21 can be fixed to the inner side of the display module 2 by means of adhesive or other methods. The first connecting portion 14 and the second connecting portion 21 achieve a fixed connection between the outer casing 1 and the display module 2 through magnetic attraction.

[0032] In some cases, since the inner door cover 4 occupies a large area, a clearance window 41 can be provided on the inner door cover 4 so that the first connecting part 14 can pass through the inner door cover 4 and connect with the second connecting part 21.

[0033] The inner door cover 4 is made of die-cast aluminum in one piece. The edge of the inner door cover 4 is provided with multiple positioning holes 42, and the bottom wall of the outer shell 1 is provided with multiple positioning posts 15. The positions of the multiple positioning holes 42 correspond one-to-one with the positions of the multiple positioning posts 15. The positioning posts 15 are inserted into their corresponding positioning holes 42. By setting the positioning holes 42, the position of the inner door cover 4 can be accurately positioned, which facilitates the assembly of the device.

[0034] In existing video projection systems using splicing screens, the LED splicing screen is composed of multiple LED cabinets. After receiving the video signal of the overall image from an external input, the video signal processor divides the overall image video signal according to the number, size, and position of the LED cabinets, obtaining multiple segmented image video signals corresponding to each LED cabinet. The segmented image video signals are then sent to their respective LED cabinets. Each LED cabinet analyzes the segmented image video signals and displays the segmented image, thereby enabling the LED display screen to display the overall image. To ensure the security of video resources when the LED display screen plays video and to ensure that the video resources are not stolen or tampered with, this embodiment provides a splicing screen based on the above-mentioned display device.

[0035] Specifically, in this embodiment, the splicing screen is composed of multiple display devices connected together. Adjacent display devices are connected by circuitry, specifically between upper and lower display devices, and between left and right display devices. In other embodiments, adjacent display devices can also be connected wirelessly. This involves adding a wireless receiving module and a wireless transmitting module near the microswitch to receive the circuit break signal sent by the microswitch and then transmitting the signal to the next adjacent display device. Wireless transmission avoids the problems of complex wiring, poor contact, and human damage associated with circuit connections between adjacent display devices.

[0036] It should be noted that the display module 2 described in this application can be an LED display module, an OLED display screen, an LCD display module, a CRT display screen, or other types of display modules. This application does not limit the specific type of display module 2.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A data security display device, characterized in that, It includes a housing and a display module. The housing has a cavity inside, with an opening at the front end and a closed end at the rear end. The cavity contains a video receiving circuit board and an inner door cover. The inner door cover is locked inside the cavity by a locking device and covers the video receiving circuit board. The display module is located outside the inner door cover, and the display module is fixedly connected to the outer shell and seals the opening of the cavity; The video receiving circuit board is communicatively connected to the video source, and the video receiving circuit board is electrically connected to the display module through an electrical performance connector passing through the inner door cover, so as to supply power and video signals to the display module.

2. The display device according to claim 1, characterized in that, The cavity is also equipped with a micro switch, which is connected between the video source and the video receiving circuit board. When the inner door cover is touched, the micro switch can be triggered to generate an open circuit signal to control the video source to stop transmitting video signals to the video receiving circuit board.

3. The display device according to claim 2, characterized in that, The micro switch is located inside the inner door cover.

4. The display device according to claim 1, characterized in that, The video receiving circuit board is equipped with a circuit break detection device. When the circuit loop consisting of the video receiving circuit board, the electrical connector, and the display module is broken, the circuit break detection device can be triggered to generate an open circuit signal to control the video source to stop transmitting video signals to the video receiving circuit board.

5. The display device according to claim 1, characterized in that, The outer casing also includes a first cable protection cover, which is located between two adjacent inner door covers. The two adjacent video receiving circuit boards are connected via a network cable, and the first cable protection cover covers the network cable.

6. The display device according to claim 5, characterized in that, The bottom wall of the cavity is provided with a groove corresponding to the position of the first wire protection cover, and the edge of the first wire protection cover is embedded in the groove.

7. The display device according to claim 1, characterized in that, The outer casing has a cable inlet on its side, and the inner door cover also has a cable inlet on its side. A second cable guard is provided between the cable inlet of the outer casing and the cable inlet of the inner door cover. The outer port of the second cable guard is sealed by a cable inlet sealing plate. The cable inlet sealing plate is fixedly connected to the side wall of the outer casing by screws, and the head of the screws is located inside the second cable guard. The inner end of the second cable guard is pressed and fixed by the inner door cover, and its outer end presses against the cable inlet sealing plate. Furthermore, the outer port of the second cable guard is embedded in a groove in the inner wall of the outer casing.

8. The display device according to claim 7, characterized in that, The bottom wall of the cavity is provided with a groove corresponding to the position of the inner door cover and the second wire protection cover, and the plate edge of the inner door cover and the plate edge of the second wire protection cover are embedded in the groove.

9. A video wall, characterized in that, It includes at least two display devices according to any one of claims 1 to 8, wherein adjacent display devices are electrically connected.

Images