Display module and display screen

Abstract

The display module comprises a bottom shell and a lamp panel, the lamp panel is provided with a first end face and a second end face which are opposite to each other, the first end face is provided with a plurality of lamp beads, the second end face is provided with a connecting part, and the connecting part is fixedly connected with the bottom shell; wherein the bottom shell is provided with a bottom shell inner cavity, a glue pouring groove and a glue injection hole, the second end face is provided with an electronic element electrically connected with the lamp bead, the electronic element is contained in the bottom shell inner cavity, the glue pouring groove is annularly formed in the peripheral side of the bottom shell inner cavity, the glue injection hole is formed in the back face of the bottom shell and communicated with the glue pouring groove, and the glue injection hole is communicated with the glue pouring groove. And the pouring sealant is used for injecting pouring sealant into the pouring sealant groove, so that the pouring sealant can be filled between the bottom shell and the lamp panel.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display, in particular to a display module and a display screen. Background Art

[0002] LED display screen is composed of LED dot matrix, which displays text and pictures by turning on and off the lamp beads, and the content can be changed at any time. Among them, LED display screen includes display module and box frame. Display module usually includes bottom shell and lamp board. The lamp board is provided with multiple array-arranged lamp beads. According to the size of the spacing between lamp beads, display module is divided into large spacing type and small spacing type. As for small spacing type display module, it is difficult to waterproof the display module due to the high density of lamp beads and small spacing. Therefore, small spacing type display module is only suitable for indoor use. Utility Model Content

[0003] The utility model provides a display module and a display screen, which can isolate electronic components from the outside world through the potting glue between the potting groove and the light board, prevent external water vapor and dust from entering the inner cavity of the bottom shell, have a good waterproof effect, avoid the occurrence of leakage of the display module due to water ingress and corrosion of the electronic components due to water ingress, and extend the service life of the display module.

[0004] According to a first aspect of the utility model, the utility model provides a display module, including a bottom shell and a lamp board, the lamp board having a first end surface and a second end surface opposite to each other, a plurality of lamp beads are arranged on the first end surface, a connecting portion is arranged on the second end surface, and the connecting portion is fixedly connected to the bottom shell;

[0005] Among them, the bottom shell is provided with a bottom shell inner cavity, a glue pouring groove and a glue injection hole, the second end face is provided with an electronic component electrically connected to the lamp bead, the electronic component is accommodated in the bottom shell inner cavity, the glue pouring groove is arranged on the circumference of the bottom shell inner cavity, the glue injection hole is arranged on the back side of the bottom shell and is connected with the glue pouring groove, and is used for injecting potting glue into the glue pouring groove, so that the potting glue can be filled between the bottom shell and the lamp board.

[0006] In a display module of an embodiment of the present invention, the display module includes a glue potting layer, and the glue potting layer is laid in the gap between the lamp beads and is not higher than the lamp surface height of the lamp beads.

[0007] In a display module of an embodiment of the present invention, the display module includes a connecting piece, a connecting hole is provided on the bottom shell, and the connecting piece passes through the connecting hole and is connected to the connecting portion to connect the light board and the bottom shell together.

[0008] In a display module of one embodiment of the utility model, the connecting member includes a locking screw, the connecting part includes a copper column welded to the light board, the copper column is provided with an internal threaded hole, and the locking screw is passed through the connecting hole and threadedly connected to the internal threaded hole.

[0009] In a display module according to an embodiment of the present invention, the bottom case includes a bottom case body and a protection structure, and the protection structure is arranged on the corners of the bottom case body to protect the corners of the display module.

[0010] In a display module of an embodiment of the present invention, a notch is formed on the corner of the bottom shell body, mounting parts are provided on both sides of the notch, and the protection structure is accommodated in the notch and fixed on the mounting parts.

[0011] In a display module of one embodiment of the utility model, the protection structure includes a connecting pad and a protective sheet, the connecting pad is provided with mounting holes at both ends, the position of the mounting holes corresponds to the position of the mounting portion, and the protective sheet is connected to the connecting pad and extends toward one side of the light board.

[0012] In a display module according to an embodiment of the present invention, the protection structure includes a corner pad, and the corner pad is arranged between the connection pad and the protection sheet.

[0013] According to the second aspect of the utility model, the utility model further provides a display screen, characterized in that it includes the above-mentioned display module.

[0014] The technical solution provided by the embodiments of the present application may include the following beneficial effects: the present application designs a display module and a display screen, including a bottom shell and a light board, the bottom shell is provided with a bottom shell inner cavity, a glue pouring groove and a glue injection hole, the glue pouring groove is arranged on the circumference of the bottom shell inner cavity, the glue injection hole is arranged on the back side of the bottom shell and is connected with the glue pouring groove, and is used to inject potting glue into the glue pouring groove, so that the potting glue can be filled between the bottom shell and the light board to isolate the electronic components from the outside world and prevent external water vapor and dust from entering the bottom shell inner cavity, having a good waterproof effect, avoiding the occurrence of problems such as leakage of the display module due to water ingress and corrosion of electronic components due to water ingress, and extending the service life of the display module.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a structural schematic diagram of a display module provided in one embodiment of the present application;

[0018] Figure 2 yes Figure 1 An exploded schematic diagram of a display module in FIG.

[0019] Figure 3 yes Figure 1 A cross-sectional schematic diagram of a display module in FIG.

[0020] Figure 4 yes Figure 3 An enlarged schematic diagram at A;

[0021] Figure 5 yes Figure 2 The structural diagram of the light board in FIG.

[0022] Figure 6 yes Figure 2 A partial schematic diagram of the bottom shell in FIG.

[0023] Figure 7 yes Figure 2 A schematic diagram of the bottom shell in another angle;

[0024] Figure 8 yes Figure 2 An exploded schematic diagram of the bottom shell in FIG.

[0025] Fig. 9 yes Figure 8 Schematic diagram of the structure of the bottom shell body. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should also be understood that the terms used in this utility model specification are only for describing specific realities. In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0028] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0029] like Figures 1 to 9 As shown, according to the first aspect of the present application, the present application provides a display module, including a bottom shell 10 and a lamp board 20, the lamp board 20 having a first end face 21 and a second end face 22 relative to each other, a plurality of lamp beads 211 are provided on the first end face 21, and a connecting portion 221 is provided on the second end face 22, and the connecting portion 221 is fixedly connected to the bottom shell 10.

[0030] In this embodiment, the bottom shell 10 is provided with a bottom shell cavity 111 and a glue potting groove 112 arranged around the bottom shell cavity 111. The second end face 22 is provided with an electronic component electrically connected to the lamp bead 211. The electronic component is accommodated in the bottom shell cavity 111. The glue potting groove 112 and the lamp board 20 are filled with potting glue to isolate the electronic component from the outside world and prevent external water vapor and dust from entering the bottom shell cavity 111. It has a good waterproof effect, avoids the occurrence of problems such as leakage of the display module due to water ingress and corrosion of the electronic components due to water ingress, and invisibly extends the service life of the display module.

[0031] In an optional embodiment, a glue injection hole 113 is provided on the side of the bottom shell 10 facing away from the light board 20, and the glue injection hole 113 is connected to the glue filling groove 112 for injecting potting glue into the glue filling groove 112, so that the potting glue can be filled between the bottom shell 10 and the light board 20. After the potting glue solidifies, the electronic components on the second end face 22 can be isolated from the outside world to prevent dust and water vapor from entering.

[0032] In an optional embodiment, the display module includes a glue potting layer 30, which is laid in the gap between the lamp beads 211 and is not higher than the lamp surface height of the lamp bead 211, so as to protect the lamp pins of the lamp bead 211. At the same time, it also avoids the height of the glue potting layer 30 being higher than the height of the lamp surface of the lamp bead 211, thereby avoiding the problem of cross-light between adjacent lamp beads 211, thereby ensuring the display effect of the display module.

[0033] Exemplarily, when the glue filling device moves above the first end face 21 through the glue filling head and fills the glue into the gaps between the lamp beads 211, the glue then uses its own fluidity to form a glue filling layer on the lamp board 20 to protect the lamp pins of the lamp beads 211. The height of the glue filling layer is at a certain position on the side of the lamp bead 211, which is lower than the height of the lamp surface of the lamp bead 211. Therefore, it will not block the light emission of the lamp bead 211, and avoids the light crosstalk between adjacent LED lamp beads, which not only improves the display effect and quality of high-density and small-pitch display screens, but also ensures the waterproof performance of the display module. In addition, when the glue cools to form the glue filling layer 30, a certain amount of glue will remain around the lamp board 20. The residual glue around the lamp board can be cut off by a cutting device to ensure the size of the lamp board, and the lamp surface of the lamp bead 211 is filled with glue by a fixture to protect the lamp surface.

[0034] It should be noted that the glue can be solidified under certain conditions to ensure the stability of the glue layer 30 and prevent the glue from flowing and affecting the function of the glue layer 30. Specifically, the display module is placed horizontally at room temperature for about an hour to solidify, thereby ensuring that the glue is stably solidified, ensuring the waterproof, high and low temperature and high humidity resistance of the glue layer 30, and further ensuring the service life of the display module.

[0035] In an optional embodiment, the height of the glue potting layer 30 is higher than the setting of the lamp pins of the lamp bead 211, so as to protect the lamp pins of the lamp bead 211, ensure a good connection between the lamp bead 211 and the light board 20, and further ensure the light emission of the lamp bead 211; and the height of the glue potting layer 30 is set to be lower than the height of the lamp bead 211, so as to avoid the glue potting layer 30 affecting the light emission effect of the lamp bead 211 due to covering the lamp bead 211.

[0036] Exemplarily, the height of the lamp bead 211 is approximately 1 mm. In order to ensure the protective effect of the glue potting layer 30 on the lamp board 20 and the lamp pins of the lamp bead 211, and to prevent the glue potting layer 30 from affecting the light emitting effect of the lamp bead 211, the present application sets the thickness range of the glue potting layer 30 on the lamp board 20 to 0.4 mm-0.6 mm. In this way, it can be ensured that the glue potting layer 30 can completely cover the lamp pins of each lamp bead 211 to ensure the protective effect of the lamp pins of the lamp bead 211, and the thickness of the glue potting layer 30 is much lower than the height of the lamp bead 211, that is, the upper half of the lamp bead 211 is exposed to the outside, so that the side of the lamp bead 211 will not be blocked, thereby avoiding the blocking effect of the glue potting layer 30 on the lamp bead 211.

[0037] For example, when the glue pouring device pours glue through the glue pouring head, it is necessary to ensure that the entire lamp board 20 is poured evenly; at the same time, the glue pouring needs to ensure that the glue pouring amount only covers the lamp pins of the lamp beads 211, and the glue pouring amount cannot be too large, so the glue pouring speed is slower than the conventional glue pouring speed. In addition, when pouring glue, a glue pouring head is generally used for pouring glue.

[0038] For example, when pouring glue, it is necessary to do it at room temperature and at a speed of 20mm-26mm per second. In this way, the pouring can be stopped immediately when the amount of glue covering the lamp beads 211 is ensured to avoid the glue being too thick. At the same time, it can also ensure that the entire lamp board 20 is evenly filled with glue.

[0039] In an optional embodiment, the display module includes a connector, and a connecting hole 114 is provided on the bottom shell 10. The connector passes through the connecting hole 114 and is connected to the connecting portion 221 to connect the light board 20 and the bottom shell 10 together, which is easy to install and firmly fixed.

[0040] In an optional embodiment, the connecting part includes a locking screw, and the connecting part 221 includes a copper column welded to the lamp board 20. The copper column is provided with an internal threaded hole. The locking screw is passed through the connecting hole 114 and is threadedly connected to the internal threaded hole, thereby fixing the lamp board 20 on the bottom shell 10. Since no through hole is provided on the lamp board 20, the local force on the lamp board 20 is basically not affected. At the same time, the copper column is arranged on the second end face 22, and will not be affected by the specifications and spacing of the lamp beads 211 and the screw head cap diameter of the locking screw. In theory, the spacing of the lamp beads 211 can be expanded to be infinitely small.

[0041] In an optional embodiment, a claw plate is provided at one axial end of the copper column, the claw plate contacts the surface of the lamp board 20, and one end of the copper column provided with the claw plate is welded to the lamp board 20, and a support end face is defined at the other axial end of the copper column, and an internal threaded hole is provided on the support end face. Among them, a positioning surface is provided on the bottom surface of the connecting hole 114, and when the copper column extends into the connecting hole 114, the support end face abuts against the positioning surface. In this way, by cooperating between the support end face of the copper column and the positioning surface of the connecting hole 114, the flatness optimization effect of the lamp board 20 can be better achieved.

[0042] In an optional embodiment, the copper column has a mating surface that cooperates with the lamp board 20. An opening is set on the mating surface to allow the solder between the mating surface and the lamp board 20 to enter the opening, thereby increasing the contact area between the solder and the copper column and improving the firmness of the welding.

[0043] In an optional embodiment, an annular groove is formed between the mating surface and the body of the copper column, so that the opening and the annular groove can be filled with secondary soldering, and the solder of the secondary soldering and the solder of the reflow soldering are fused together, further improving the firmness of the soldering and preventing the copper column from falling off the lamp board 20.

[0044] In an optional embodiment, a positioning column that cooperates with the lamp board 20 is provided on the mating surface, which not only facilitates the positioning and installation of the copper column, but also further increases the stability of the copper column, effectively solving the problem of the copper column being easy to fall off.

[0045] In an optional embodiment, the bottom shell 10 includes a bottom shell body 11 and a protective structure 12. The protective structure 12 is arranged on the corners of the bottom shell body 11 to protect the corners of the display module to prevent the corners of the display module from being bumped during disassembly or transportation, causing dead spots on the entire screen.

[0046] In an optional embodiment, a notch 115 is formed on the corner of the bottom shell body 11 , and mounting portions 116 are provided on both sides of the notch 115 . The protection structure 12 is accommodated in the notch 115 and fixed on the mounting portions 116 to enhance the strength of the corner.

[0047] In an optional embodiment, the protection structure 12 includes a connection pad 121 and a protection sheet 122. The connection pad 121 is provided with mounting holes at both ends. The positions of the mounting holes correspond to the positions of the mounting parts, so that the connection pad 121 can be fixed with the bottom shell body 11 by bolts, and it is not easy to fall off. The protection sheet 122 is connected to the connection pad 121 and extends toward one side of the light board 20, so as to protect the light board 20.

[0048] In an optional embodiment, the protection structure 12 includes a corner pad 123 , and the corner pad 123 is disposed between the connection pad 121 and the protection sheet 122 .

[0049] In an optional embodiment, the protection sheet 122 is made of metal material.

[0050] like Figures 1 to 9 As shown, according to the second aspect of the present application, the present application also provides a display screen, characterized in that it includes the above-mentioned display module.

[0051] In the description of this application, it should be noted that, unless otherwise clearly 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 mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0052] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0053] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A display module, characterized in that: It comprises a bottom shell and a lamp board, wherein the lamp board has a first end surface and a second end surface opposite to each other, a plurality of lamp beads are arranged on the first end surface, and a connecting portion is arranged on the second end surface, and the connecting portion is fixedly connected to the bottom shell; Among them, the bottom shell is provided with a bottom shell inner cavity, a glue pouring groove and a glue injection hole, the second end face is provided with an electronic component electrically connected to the lamp bead, the electronic component is accommodated in the bottom shell inner cavity, the glue pouring groove is arranged on the circumference of the bottom shell inner cavity, the glue injection hole is arranged on the back side of the bottom shell and is connected with the glue pouring groove, and is used for injecting potting glue into the glue pouring groove, so that the potting glue can be filled between the bottom shell and the lamp board.

2. The display module according to claim 1, characterized in that: The display module includes a glue potting layer, and the glue potting layer is laid in the gaps between the lamp beads and is not higher than the lamp surface height of the lamp beads.

3. The display module according to claim 1, characterized in that: The display module includes a connecting piece, and a connecting hole is provided on the bottom shell. The connecting piece passes through the connecting hole and is connected to the connecting part to connect the light board and the bottom shell together.

4. The display module according to claim 3, characterized in that: The connecting piece includes a locking screw, the connecting part includes a copper column welded to the lamp board, the copper column is provided with an internal threaded hole, and the locking screw is passed through the connecting hole and threadedly connected to the internal threaded hole.

5. The display module according to claim 4, characterized in that: A claw plate is arranged at one axial end of the copper column, the claw plate contacts the surface of the lamp board, and one end of the copper column provided with the claw plate is welded to the lamp board.

6. The display module according to claim 1, characterized in that: The bottom shell comprises a bottom shell body and a protection structure. The protection structure is arranged on the corners of the bottom shell body to protect the corners of the display module.

7. The display module according to claim 6, characterized in that: A notch is formed on the corner of the bottom shell body, and mounting parts are arranged on both sides of the notch. The protection structure is accommodated in the notch and fixed on the mounting parts.

8. The display module according to claim 7, characterized in that: The protection structure includes a connection pad and a protection sheet. Both ends of the connection pad are provided with mounting holes. The positions of the mounting holes correspond to the positions of the mounting parts. The protection sheet is connected to the connection pad and extends toward one side of the lamp board.

9. The display module according to claim 8, characterized in that: The protection structure includes a corner pad, and the corner pad is arranged between the connection pad and the protection sheet.

10. A display screen, characterized in that: Comprising the display module as described in any one of claims 1 to 9.

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