Data security display device and splicing screen

Abstract

The utility model discloses a data security display device and a splicing screen, the display device comprises a shell and a display module, the shell is internally provided with a cavity, the front side end of the cavity is provided with an opening, and the rear side end of the cavity is a closed end. A video receiving circuit board and an inner door cover are arranged in the cavity, and the inner door cover is locked in the cavity through a locking piece and covers the video receiving circuit board. The display module is located outside the inner door cover, is fixedly connected with the shell and covers and seals the opening of the cavity. The video receiving circuit board is in communication connection with a video source, and the video receiving circuit board is electrically connected with the display module through an electrical property connector penetrating through the inner door cover so as to transmit a power supply and a video signal to the display module. According to the display device, the video receiving circuit board in the cavity of the shell is covered by the inner door cover, the video receiving circuit board can be isolated from the outside through the inner door cover, the video receiving circuit board can be prevented from being stolen or tampered, and the purpose of preventing video signals from being stolen or tampered is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of display devices, and in particular relates to a data-safe display device and a splicing screen. Background Art

[0002] In the existing video projection system based on LED splicing screen, the LED splicing screen is composed of multiple LED boxes. After the video signal processor receives the video signal of the overall picture input from the outside, it divides 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 screens corresponding to the LED boxes, and sends the video signals of the split screens separately (or in branches) to the corresponding LED boxes. Each LED box parses the video signal of the split screen and displays the split screen, thereby realizing the display of the overall picture by the LED splicing screen.

[0003] For some copyrighted videos such as movies and advertisements, the various components in the existing video projection system lack protection mechanisms, which makes it easy for video signals to be obtained from multiple locations, making it easy for video signals to be stolen or tampered with. Utility Model Content

[0004] The purpose of the utility model is to provide a display device and a splicing screen with data security, which can solve the problem that the video signal of the LED splicing screen video projection system in the prior art is easily stolen or tampered with.

[0005] The utility model is implemented as follows: a data security display device includes a housing and a display module, wherein the housing has a cavity inside, the front end of the cavity has an opening, and the rear end thereof is a closed end;

[0006] A video receiving circuit board and an inner door cover are provided 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, the display module is fixedly connected to the outer shell, and covers the opening of the cavity;

[0007] 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 via an electrical performance connector passing through the inner door cover to transmit electrical energy and video signals to the display module.

[0008] Furthermore, a micro switch is provided in the cavity. When the inner door cover is touched, the micro switch can be triggered to generate a circuit breaker signal to control the video source to stop transmitting the video signal to the video receiving circuit board.

[0009] Furthermore, the micro switch is located inside the inner door cover.

[0010] Furthermore, a loop disconnection detection device is provided on the video receiving circuit board. When the circuit loop formed by the video receiving circuit board, the electrical performance connector and the display module is disconnected, the loop disconnection detection device can be triggered to generate a circuit breaker signal to control the video source to stop transmitting the video signal to the video receiving circuit board.

[0011] Furthermore, a first wire protection cover is provided in the shell, and the first wire protection cover is located between two adjacent inner door covers. The two adjacent video receiving circuit boards are connected to each other through a network cable, and the first wire protection cover covers the network cable.

[0012] Furthermore, a groove is provided on the bottom wall of the cavity at a position corresponding to the first wire protection cover, and a plate edge of the first wire protection cover is embedded in the groove.

[0013] Furthermore, a wire inlet is provided on the side of the outer shell, and a wire inlet is also provided on the side of the inner door cover. A second wire protection cover is provided between the wire inlet of the outer shell and the wire inlet of the inner door cover. The outer port of the second wire protection cover is closed by a wire inlet sealing plate, and the wire inlet sealing plate is fixedly connected to the side wall of the outer shell by screws, and the head of the screw is located inside the second wire protection cover; the inner end of the second wire protection cover is pressed and fixed by the inner door cover, and its outer end presses the wire inlet sealing plate, and the outer port of the second wire protection cover is embedded in the slot of the inner wall of the outer shell.

[0014] Furthermore, the bottom wall of the cavity is provided with grooves corresponding to the positions of the inner door cover and the second wire protection cover, and the plate edges of the inner door cover and the second wire protection cover are embedded in the grooves.

[0015] In order to achieve the above-mentioned object, the present invention further provides a spliced ​​screen, comprising at least two display devices according to any one of the above-mentioned items, wherein adjacent display devices are electrically connected.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The display device of the present invention has a video receiving circuit board disposed in a cavity of its outer shell. The rear end of the cavity is a closed end and cannot be opened. The video receiving circuit board in the cavity is covered by an inner door cover. The inner door cover can isolate the video receiving circuit board from the external space, thereby preventing the video receiving circuit board from being accessed by theft or tampering, thereby preventing the video signal from being stolen or tampered with. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of a data security display device provided by an embodiment of the present utility model;

[0019] Figure 2 yes Figure 1An exploded structural diagram of the display device shown;

[0020] Figure 3 yes Figure 1 An exploded structural diagram of the display device from another angle;

[0021] Figure 4 yes Figure 1 a top view of the display device shown;

[0022] Figure 5 yes Figure 4 Section view along section line AA;

[0023] Figure 6 yes Figure 5 Enlarged view of area A in the middle;

[0024] Figure 7 yes Figure 4 Section view along line BB. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance; in addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See Figures 1 to 4 , shows a data security display device provided by this embodiment, including a shell 1 and a display module 2. The shell 1 of this embodiment is box-shaped, and the interior of the shell 1 has a cavity 10. The front end of the cavity 10 has an opening, and the rear end thereof is a closed end.

[0028] A video receiving circuit board 3 and an inner door cover 4 are provided in the cavity 10 of the housing 1 . The inner door cover 4 is fixed in the cavity 10 by locking members (such as screws, rivets, etc.) and covers the video receiving circuit board 3 .

[0029] The display module 2 is located outside the inner door cover 4 . The display module 2 is fixedly connected to the outer shell 1 and covers the opening of the cavity 10 .

[0030] The video receiving circuit board 3 is in communication with the video source. The video receiving circuit board 3 is electrically connected to the display module 2 via an electrical performance connector passing through the inner door cover 4 to transmit power and video signals to the display module 2 .

[0031] Since the rear end 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 external space, preventing theft or tampering with the video receiving circuit board 3, thereby preventing the video signal from being stolen or tampered with.

[0032] Furthermore, a micro switch 5 is provided in the cavity 10 . When the inner door cover 4 is touched (ie moved or opened), the micro switch 5 is triggered to generate a circuit breaker signal to control the video source to stop transmitting the video signal to the video receiving circuit board 3 .

[0033] Furthermore, a loop disconnection detection device is provided on the video receiving circuit board 3. When the circuit loop formed by the video receiving circuit board 3, the electrical performance connector and the display module 2 is disconnected, that is, when the connection circuit between the video receiving circuit board 3 and the display module 2 is unplugged or cut off, the loop disconnection detection device can be triggered to generate a circuit breaker signal to control the video source to stop transmitting the video signal to the video receiving circuit board 3.

[0034] It can be seen that the display device of this embodiment is provided with measures to prevent the video from being stolen or tampered with in both mechanical structure and signal control aspects, thus achieving a multiple protection effect.

[0035] To protect the connection lines between the video receiving circuit boards 3, a first cable protection cover 6a is further provided within the housing 1. This cover is located between two adjacent inner door covers 4. The two adjacent video receiving circuit boards 3 communicate via a network cable, which the cover 6a protects. Preferably, a groove 11 is provided on the bottom wall of the cavity 10, corresponding to the position of the first cable protection cover 6a. The edge of the cover 6a fits within this groove 11.

[0036] A line inlet 12 is provided on the side of the housing 1, and a line inlet is also provided on the side of the inner door cover 4. The external power supply line and the video input line are connected to the video receiving circuit board 3 through the line inlet 12. In order to protect the lines connected from the outside, a second line protection cover 6b is provided between the line inlet 12 of the housing 1 and the line inlet of the inner door cover 4. Similarly, Figure 7 As shown, a groove 11 is provided on the bottom wall of the cavity 10 at positions corresponding to the inner door cover 4 and the second wire protection cover 6b, and the plate edges of the inner door cover 4 and the second wire protection cover 6b are embedded in the groove 11. By embedding the plate edges of the first wire protection cover 6a, the second wire protection cover 6b and the inner door cover 4 in the grooves, the inner door cover 4 and the wire protection cover can be prevented from being pried open. In addition, if the inner door cover 4 and the wire protection cover are forcibly pried open from the outside, traces are likely to be left, which can serve as a warning to thieves or tamperers.

[0037] Please also read Figure 5 and Figure 6 In order to prevent thieves or tamperers from destroying or opening the device from the wire inlet 12 of the housing 1, the outer port of the second wire protection cover 6b is closed by the wire inlet sealing plate 7, and the wire inlet sealing plate 7 is fixed to the side wall of the housing 1 by screws 8, and the head of the screw 8 is located inside the second wire protection cover 6b; the inner end of the second wire protection cover 6b is pressed and fixed by the inner door cover 4, and its outer end presses the wire inlet sealing plate 7, and the outer port of the second wire protection cover 6b is embedded in the slot 13 on the inner wall of the housing 1. With the above structural design, when the device is installed, one end of the second wire protection 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 disassembled first, the second wire protection cover 6b and the wire inlet sealing plate 7 cannot be disassembled. However, if the inner door cover 4 is to be disassembled, the micro switch 5 will be triggered.

[0038] To achieve a fixed connection between the housing 1 and the display module 2, a first connecting portion 14 extends from the bottom wall of the housing 1 in this embodiment, and a second connecting portion 21 is provided on the inner side of the display module 2. The first connecting portion 14 and the second connecting portion 21 are fixedly connected. In this embodiment, the first connecting portion 14 is cylindrical, with a top made of metal or a magnet. Since the housing 1 in this embodiment is a die-cast box, the first connecting portion 14, when made of metal, can be integrally formed with the housing 1. The second connecting portion 21 is a magnet and can be fixed to the inner side of the display module 2 by bonding or other means. The first connecting portion 14 and the second connecting portion 21 achieve a fixed connection between the housing 1 and the display module 2 through magnetic attraction.

[0039] In some cases, since the inner door cover 4 occupies a large area, an avoidance window 41 may be provided on the inner door cover 4 to allow the first connection portion 14 to pass through the inner door cover 4 and connect with the second connection portion 21 .

[0040] The inner door cover 4 is made of an integrated die-cast aluminum material. A plurality of positioning holes 42 are provided on the edge of the inner door cover 4, and a plurality of positioning columns 15 are provided on the bottom wall of the outer shell 1. The positions of the plurality of positioning holes 42 correspond one-to-one to the positions of the plurality of positioning columns 15. The positioning columns 15 are inserted into the corresponding positioning holes 42. By setting the positioning holes 42, the position of the inner door cover 4 can be accurately positioned, which is convenient for assembly of the device.

[0041] In existing video projection systems using spliced ​​screens, the LED spliced ​​screen is composed of multiple LED cabinets. After receiving the video signal of the entire screen from an external input, the video signal processor divides the video signal of the entire screen according to the number, size, and position of the LED cabinets, obtaining multiple video signals of the split screens corresponding to the LED cabinets. The video signals of the split screens are sent to the corresponding LED cabinets respectively. Each LED cabinet parses the video signal of the split screen and displays the split screen, thereby realizing the display of the entire screen on the LED display. In order to ensure the security of the video resources when the LED display screen plays videos and to ensure that the video resources cannot be stolen or tampered with, this embodiment provides a spliced ​​screen based on the above-mentioned display device.

[0042] Specifically, the spliced ​​screen in this embodiment is composed of multiple display devices, and adjacent display devices are connected by circuits, that is, the upper and lower display devices and the left and right display devices are connected by circuits. In other embodiments, wireless transmission can also be used between adjacent display devices. That is, a wireless receiving module and a wireless transmitting module can be added near the micro switch to receive the circuit breaker signal sent by the micro switch and continue to transmit the circuit breaker signal to the next adjacent display device. Wireless transmission can avoid the influence of complex wiring, poor contact, and human damage when connecting the circuits between adjacent display devices.

[0043] It should be noted that the display module 2 described in the present invention can be a display module of the type of LED display module, OLED display screen, LCD display module, CRT display screen, etc. The present invention does not limit the specific type of the display module 2.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A data security display device, characterized in that: The device comprises a housing and a display module, wherein the housing has a cavity inside, the front end of the cavity has an opening, and the rear end thereof is a closed end; A video receiving circuit board and an inner door cover are provided in the cavity, and 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, is fixedly connected to the outer shell, and covers 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 via an electrical performance connector passing through the inner door cover to transmit electrical energy and video signals to the display module.

2. The display device according to claim 1, wherein A micro switch is also provided in the cavity. When the inner door cover is touched, the micro switch can be triggered to generate a circuit breaker signal to control the video source to stop transmitting the video signal to the video receiving circuit board.

3. The display device according to claim 2, wherein: The micro switch is located inside the inner door cover.

4. The display device according to claim 1, wherein The video receiving circuit board is provided with a loop disconnection detection device. When the circuit loop formed by the video receiving circuit board, the electrical performance connector and the display module is disconnected, the loop disconnection detection device can be triggered to generate a circuit breaker signal to control the video source to stop transmitting the video signal to the video receiving circuit board.

5. The display device according to claim 1, wherein A first wire protection cover is further provided in the shell, and the first wire protection cover is located between two adjacent inner door covers. The two adjacent video receiving circuit boards are connected to each other through a network cable, and the first wire protection cover covers the network cable.

6. The display device according to claim 5, wherein: A groove is provided on the bottom wall of the cavity corresponding to the position of the first wire protection cover, and the plate edge of the first wire protection cover is embedded in the groove.

7. The display device according to claim 1, wherein A wire inlet is provided on the side of the outer shell, and a wire inlet is also provided on the side of the inner door cover. A second wire protection cover is provided between the wire inlet of the outer shell and the wire inlet of the inner door cover. The outer port of the second wire protection cover is closed by a wire inlet sealing plate, and the wire inlet sealing plate is fixedly connected to the side wall of the outer shell by screws, and the head of the screw is located in the second wire protection cover; the inner end of the second wire protection cover is pressed and fixed by the inner door cover, and its outer end presses the wire inlet sealing plate, and the outer port of the second wire protection cover is embedded in the slot of the inner wall of the outer shell.

8. The display device according to claim 7, wherein: The bottom wall of the cavity is provided with grooves corresponding to the positions of the inner door cover and the second wire protection cover, and the plate edges of the inner door cover and the second wire protection cover are embedded in the grooves.

9. A splicing screen, characterized in that: The invention comprises at least two display devices according to any one of claims 1 to 8, wherein adjacent display devices are electrically connected.

Images