Display screen and light-emitting device thereof

Abstract

Embodiments of the present application provide a display screen and a light-emitting device thereof. The light-emitting device comprises a mask and a light panel, wherein the mask comprises a top plate and side plates connected to the periphery of the top plate in a surrounding mode and extending towards the same side of the top plate; the light panel is arranged in the space defined by the side plates and is provided with a light-emitting surface facing the top plate; and the top plate is covered with a skin layer formed by UV printing. According to the embodiments of the present application, the skin layer for decoration is formed on the mask by UV printing, so that the skin layer can evenly cover the mask, thinning caused by stretching during coating at the edge of the mask is avoided, and the display effect of the light-emitting device and the pass rate of products can be effectively improved.

Description

Display screen and light-emitting device thereof

[0001] Cross-references

[0002] This application refers to Chinese patent application No. 202420197070X, filed on January 26, 2024, entitled “Display screen and light-emitting device thereof”, which is incorporated into this application in its entirety by reference. Technical Field

[0003] The present application relates to the field of LED display technology, and in particular to a display screen and a light-emitting device thereof. Background Art

[0004] With the development of LED display technology, LED screens are widely used in interior decoration. Currently, the light-emitting module of LED screens used for interior decoration usually includes an LED light source panel and a mask mounted above it. The mask is generally a transparent, grooved shell, and films are usually applied to the top and sides of the shell to achieve different decorative shapes. However, this method can easily cause the film to be stretched and thinned at the corners of the shell, or even damaged, thus affecting the display effect of the LED screen and even the product qualification rate.

[0005] Utility Model Content

[0006] In view of the above problems, the embodiments of the present application are proposed to provide a display screen and a light-emitting device thereof that solve the above problems or at least partially solve the above problems.

[0007] In a first aspect, an embodiment of the present application provides a light-emitting device, comprising:

[0008] The mask comprises a top plate and side plates connected to the periphery of the top plate and extending to the same side of the top plate;

[0009] a light panel, disposed in the side panel and having a light-emitting surface facing the top panel;

[0010] Wherein, the top plate is covered with a skin layer printed by UV.

[0011] Furthermore, at least part of the side panels is also covered with a skin layer by UV printing.

[0012] Furthermore, the lamp board includes a PCB board arranged in the side panel and a plurality of LED lamp beads arranged in an array on the side of the PCB board facing the top panel. The top panel is provided with a hole structure including a plurality of blind holes on the side facing the PCB board, and the opening of each blind hole faces the PCB board and is used to accommodate one of the LED lamp beads.

[0013] Furthermore, the hole-shaped structure includes a plurality of transverse partitions and a plurality of longitudinal partitions provided on a side of the top plate facing the PCB board;

[0014] The plurality of transverse partitions and the plurality of longitudinal partitions are arranged at equal intervals and staggered with each other to form the plurality of blind holes.

[0015] Furthermore, the thicknesses of the plurality of transverse partitions and the plurality of longitudinal partitions are equal and are 1.4-5 times the thickness of the side plates.

[0016] Furthermore, the top plate is polygonal, a plurality of side plates are connected around the periphery of the top plate, and at least one of the side plates is covered with the skin layer;

[0017] Alternatively, the top plate is quadrilateral, the four side plates are connected around the periphery of the top plate, and two adjacent side plates are covered with the skin layer;

[0018] Alternatively, the top plate is circular or elliptical, and the side plates are connected around the periphery of the top plate in an annular shape, and the annular side plates are covered with the skin layer.

[0019] Furthermore, the light panel further includes a bottom shell and a plurality of supporting columns;

[0020] The bottom shell is detachably connected to the side plate, and a side of the PCB facing away from the top plate is detachably connected to a side of the bottom shell facing the top plate;

[0021] One end of the plurality of support columns is connected to a side of the PCB board facing the top plate, and the other end extends toward the top plate.

[0022] In a second aspect, an embodiment of the present application further provides a display screen, comprising:

[0023] frame;

[0024] A plurality of light-emitting devices as described in any one of the first aspects, wherein the side panels of each of the light-emitting devices are detachably mounted on the frame at one end away from the top panel.

[0025] Furthermore, two opposite side panels in two adjacent light-emitting devices are attached to each other and neither of them covers the UV-printed skin layer.

[0026] Furthermore, it also includes:

[0027] A connector, one end of which extends into the frame and is connected thereto, and the other end of which is placed outside the frame and is used to be connected to another frame.

[0028] In the technical solution provided in the embodiment of the present application, the mask of the light-emitting device includes a top plate and a side plate connected to the outer periphery of the top plate and extending on the same side of the top plate; the light panel of the light-emitting device is arranged in the side plate and has a light-emitting surface facing the top plate; wherein, the top plate is covered with a skin layer printed by UV printing, and the skin layer for decoration is formed on the mask by UV printing, so that the skin layer can be evenly covered on the mask, avoiding the stretching and thinning of the edge of the mask due to the coating, which can effectively improve the display effect of the light-emitting device and the qualified rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying any creative work.

[0030] FIG1 is an exploded perspective view of a three-dimensional structure of a light emitting device provided by an embodiment of the present invention;

[0031] FIG2 is another exploded schematic diagram of a three-dimensional structure of a light emitting device provided by an embodiment of the present invention;

[0032] FIG3 is an enlarged structural diagram of part A of a light emitting device provided by an embodiment of the present invention;

[0033] FIG4 is another exploded perspective view of a light emitting device according to an embodiment of the present invention;

[0034] FIG5 is a schematic diagram of a three-dimensional structure of a light emitting device provided by an embodiment of the present invention;

[0035] FIG6 is a schematic diagram of a three-dimensional structure of a display screen provided by an embodiment of the present invention;

[0036] FIG7 is a schematic diagram of a side structure of a display screen provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the embodiments of the present application.

[0038] It should be noted that, in the description of this application, if the terms "first", "second", etc. appear, "first" and "second" are only used to facilitate the description of different components or names, and cannot be understood as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" appears in the full text, its meaning is to include three parallel solutions. Taking "A and / or B as an example", it includes Solution A, or Solution B, or a solution that satisfies both A and B.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0040] Please refer to FIG. 1 , which is a schematic exploded view of a three-dimensional structure of a light emitting device provided by an embodiment of the present invention. The light emitting device includes a mask 10 and a light board 20 .

[0041] The mask 10 includes a top panel 110 and a side panel 120 that is connected to the periphery of the top panel 110 and extends to the same side of the top panel 110; the light panel 20 is arranged in the side panel 120 and has a light-emitting surface 210 facing the top panel 110; wherein, the top panel 110 is covered with a skin layer 130 printed by UV.

[0042] Specifically, please refer to Figure 2, the mask 10 is an integrally formed groove-shaped structure, the side panel 120 is arranged around the edge periphery of the top panel 110, one end of the side panel 120 is connected to the top panel 110, and the other end extends one end distance toward the same side of the top panel 110, thereby forming a groove-shaped structure; the light panel 20 is arranged in the side panel 120 below the top panel 110, and the light panel 20 can be directly connected to the bottom of the top panel 110 or on the inner wall of the side panel 120, or it can be indirectly in the side panel 120 through other connecting parts. However, regardless of the connection method, the light panel 20 has the light-emitting surface 210 facing the top panel 110, and the light-emitting surface 210 here can be directly irradiated on the top panel 110, or it can be irradiated on the top panel 110 after reflection. The light irradiated on the top panel 110 can at least partially pass through the mask 10, so that the mask 10 forms a light-emitting member, that is, the light-emitting device. In an embodiment of the present invention, the skin layer 130 is covered on the top plate 110. As shown in the figure, in order to show the hierarchical relationship between the surface of the top plate 110 and the skin layer 130, only a portion of the skin layer 130 is drawn on the surface of the top plate 110. However, in actual applications, the surface of the top plate 110 is completely covered by the skin layer 130. The skin layer 130 here is covered on the side of the top plate 110 away from the light board 20 in the form of UV printing. The UV printing here is ultraviolet light curing printing, which is a type of piezoelectric inkjet printing. It uses the voltage inside the nozzle to spray UV ink onto the surface of the substrate (such as plastic, glass or other hard materials). The nozzle can precisely control multiple nozzles to spray ink droplets of different sizes. These ink droplets are then irradiated with ultraviolet light and cured into an image pattern. The UV ink here contains a photosensitizer. When ultraviolet light is irradiated on the ink, the photosensitizer will trigger a chemical change, causing the pigment molecules in the ink to solidify on the substrate, thereby forming an image pattern, namely the skin layer 130. In an embodiment of the present invention, the skin layer 130 is formed on the mask 10 by UV printing, so that the skin layer 130 can be evenly covered on the mask 10, avoiding stretching, thinning or even damage at the edge of the mask 10 when the skin layer 130 is formed by lamination. When illuminated by a light source, various parts of the mask 10 have a uniform luminous effect, which can effectively improve the luminous display effect of the luminous device and the qualified rate of the product.

[0043] Furthermore, referring to Figures 3-5, in other preferred embodiments of the present invention, at least a portion of the side panels 120 is also covered with a skin layer 130 printed by UV.

[0044] Specifically, the outer surface of the side panel 120 is fully or partially covered with the skin layer 130. Generally, when the single light-emitting device is used independently, the outer surface of the side panel 120 arranged around the outer periphery of the top panel 110 is covered by the skin layer 130; when the multiple light-emitting devices are spliced ​​together for use, the outer surfaces of the side panels 120 of two adjacent light-emitting devices that are in contact with each other will not be covered by the skin layer 130, and the outer surfaces of the side panels 120 of the light-emitting devices located on the periphery and close to the outer edge are covered by the skin layer 130. Such a design can ensure that the light-emitting device has a more uniform lighting effect regardless of the usage scenario, thereby improving the quality of the light-emitting device.

[0045] In addition, in other preferred embodiments of the present invention, the lamp board 20 includes a PCB board 220 arranged in the side panel 120 and a plurality of LED lamp beads (not shown in the figure) arranged in an array on the side of the PCB board 220 facing the top panel 110, and the top panel 110 is provided with a hole structure 140 including a plurality of blind holes 1401 on the side facing the PCB board 220, and the opening of each of the blind holes 1401 faces the PCB board 220 and is used to accommodate one of the LED lamp beads.

[0046] Specifically, the hole structure 140 is provided on the side of the top plate 110 facing the light-emitting surface 220, that is, the inner surface of the top plate 110, and the hole structure 140 includes a plurality of blind holes 1401. The blind hole 1401 here refers to the outer surface of the top plate 110 that is closed at one end, and the other end of the blind hole 1401 is open and faces the PCB board 220. The mask 10 is generally formed by integral injection molding in a mold, that is, the hole structure 140, the top plate 110 and the side plate 120 are integrally connected; the number of the plurality of blind holes 1401 is generally consistent with the number of the plurality of LED lamp beads, and there is a one-to-one correspondence between the two. Here, a plurality of LED lamp beads are arranged in a row on the PCB board 220, thereby forming the light-emitting surface 210 on the PCB board 220. The LED lamp beads can be positive-emitting lamp beads, and the light emitted by them can directly irradiate the top plate 110; or they can be side-emitting lamp beads, and the light emitted by them needs to be reflected by the reflective member provided on the PCB board 220 before irradiating the top plate 110. Regardless of the form of the LED lamp beads, they will form the light-emitting surface 210 facing the top plate 110 above the PCB board 220 to ensure that the top plate 110 is illuminated. However, the mask 10 provided with the hole-like structure 140 generally needs to use positive-lighting lamp beads, and the multiple LED lamp beads are generally arranged to protrude from the surface of the PCB board 220. The multiple blind holes 1401 cover the multiple LED lamp beads one by one, thereby forming a lens covering the LED lamp beads. Since the size, depth and wall thickness of the multiple blind holes 1401 of the hole-like structure 140 are the same, the light passing through the hole-like structure 140 and the outer surface of the top plate 110 will become very uniform, especially when multiple masks 10 are spliced ​​together for use, the two adjacent side panels 120 need to be fitted and connected to each other, and the structure after fitting and connection can be regarded as the hole wall of the blind hole 1401, so that the light will have the same transmission path at the edge position of the top plate 110 as at the middle position, so that the light is refracted more evenly at this position to avoid the appearance of obvious light and dark dividing lines, thereby effectively improving the display effect of the light-emitting device.

[0047] Furthermore, in other preferred embodiments of the present invention, the hole-shaped structure 140 includes a plurality of transverse partitions 1402 and a plurality of longitudinal partitions 1403 provided on a side of the top plate 110 facing the PCB board 220 ;

[0048] The plurality of transverse partitions 1402 and the plurality of longitudinal partitions 1403 are arranged at equal intervals and staggered with each other to form the plurality of blind holes 1401 .

[0049] Specifically, a plurality of transverse partitions 1402 are arranged at equal intervals in a first direction on the side of the top plate 110 facing the PCB board 220, and a plurality of longitudinal partitions 1403 are arranged at equal intervals in a second direction on the side of the top plate 110 facing the PCB board 220. The first direction and the second direction are perpendicular to each other. The transverse partitions 1402 and the longitudinal partitions 1403 are arranged in an alternating manner, so that the blind holes 1401 are formed between two adjacent transverse partitions 1402 and the longitudinal partitions 1403. Since the plurality of transverse partitions 1402 and the plurality of longitudinal partitions 1403 are arranged in an alternating manner, the plurality of blind holes 1401 are formed on the side of the top plate 110 facing the PCB board 220.

[0050] Furthermore, the thicknesses of the plurality of transverse partitions 1402 and the plurality of longitudinal partitions 1403 are equal and are 1.4-5 times the thickness of the side panels 120 .

[0051] Here, since the thicknesses of the multiple transverse partitions 1402 and the multiple longitudinal partitions 1403 are equal, the wall thicknesses of each blind hole 1401 are equal, and thus the LED lamp beads in each blind hole 1401 have the same transmission path. Such a design will make the light emission on the surface of the top plate 110 more uniform; in addition, the thicknesses of the multiple transverse partitions 1402 and the multiple longitudinal partitions 1403 are 1.4-5 times the thickness of the side plate 120, that is, the thickness of the side plate 120 is 20%-70% of the thickness of the partition (the transverse partitions 1402 and the longitudinal partitions 1403). In a preferred embodiment, The thickness of the side panel 120 is 50% of the thickness of the partition (the transverse partition 1402 and the longitudinal partition 1403). With this design, when multiple masks 10 are spliced ​​together for use, the two adjacent side panels 120 need to be fitted and connected to each other, and the sum of the thicknesses of the two side panels 120 will be closer to the thickness of a partition (the transverse partition 1402 and the longitudinal partition 1403). In this way, the light at the edge position of the top plate 110 will have the same transmission path as at the middle position, so that the light is refracted more evenly at this position, avoiding the appearance of obvious light and dark dividing lines at its edge position, thereby effectively improving the display effect of the light-emitting device.

[0052] In addition, in order to ensure that the surface of the top plate 110 has a more appropriate light and dark effect and that the LED lamp beads can be accommodated in the blind hole 1401, the depth of the blind hole 1401 should be neither too deep nor too shallow, and 5-15 mm is preferred.

[0053] Furthermore, in order to make the porous structure 140 have a better light transmission effect, that is, to make the surface of the top plate 110 have a better light and dark effect, the inner wall of each blind hole 1401 needs to be frosted, that is, a frosted layer is provided on the inner wall of the blind hole 1401.

[0054] Here, it should be noted that the shape of the blind hole 1401 can be designed to be any of circular, square or polygonal according to the parameters of the LED lamp bead and the specific usage scenario of the light-emitting device.

[0055] Furthermore, the skin layer 130 has a customized shape pattern.

[0056] Specifically, the skin layer 130 here is a decorative mask with certain light-transmitting properties. Users can customize different shapes and patterns on the skin layer 130, thereby making the light-emitting device more diverse and improving the use quality of the light-emitting device.

[0057] In addition, in other preferred embodiments of the present invention, the mask 10 is a plastic shell made of transparent material or translucent material.

[0058] Specifically, the mask 10 should have a certain light transmittance so that the light emitted by the light-emitting surface 210 can be transmitted through the mask 10 to emit light outward. The mask 10 here can be a plastic shell formed by integral injection molding using a transparent material or a translucent material. Whether to use a transparent material or a translucent material can be determined according to the specific application scenario of the light-emitting device and the light transmittance of the skin layer 130.

[0059] Furthermore, the top plate 110 is polygonal, and a plurality of side plates 120 are connected around the periphery of the top plate 110 , and at least one of the side plates 120 is covered with the skin layer 130 ;

[0060] Alternatively, the top plate 110 is a quadrilateral, the four side plates 120 are connected around the periphery of the top plate 110 , and two adjacent side plates 120 are covered with the skin layer 130 ;

[0061] Alternatively, the top plate 110 is circular or elliptical, and the side plates 120 are connected to the outer periphery of the top plate 110 in an annular shape, and the annular side plates 120 are covered with the skin layer 130 .

[0062] Specifically, in a feasible embodiment of the present invention, the mask 10 is a flat polygonal prism structure without a bottom surface, and the top surface (i.e., the top plate 110) and at least one edge surface (i.e., the side plate 120) thereof are covered with the skin layer 130;

[0063] In another feasible embodiment of the present utility model, the mask 10 is in the structure of a flat cuboid or a cube. When the four light-emitting devices are assembled and used in a "field" shape, the skin layer 130 covers the top surface (i.e., the top plate 110) and two adjacent side surfaces (i.e., the side plates 120). Of course, when a single light-emitting device is used independently, the skin layer 130 covers the top surface (i.e., the top plate 110) and the four side surfaces (i.e., the side plates 120).

[0064] In another feasible embodiment of the present utility model, the mask 10 is in the structure of a flat cylinder or an elliptical cylinder. Generally, the light-emitting device of this structure will be used independently. At this time, the mask 10 includes a top surface and a side surface that is annularly connected around the outer periphery of the top surface. The skin layer 130 covers both the top surface (i.e., the top plate 110) and the annular side surface (i.e., the side plate 120).

[0065] In addition, in other preferred embodiments of the present utility model, the lamp board 20 further includes a bottom case 230 and a plurality of support columns 240;

[0066] The bottom case 230 is detachably connected to the side plate 120, and one side of the PCB board 220 facing away from the top plate 110 is detachably connected to one side of the bottom case 230 facing the top plate 110;

[0067] One end of each of the plurality of support columns 二十four0 is connected to one side of the PCB board 220 facing the top plate 110, and the other end extends towards the top plate 110.

[0068] Specifically, the PCB board 220 and the bottom case 230 are distributed in a stacked structure, and the two are connected by a detachable connection method, specifically including but not limited to being connected by screws or bonding, etc.

[0069] In addition, the bottom case 230 is detachably connected to the side plate 120 through a snap structure or other detachable connection structures to facilitate the disassembly, maintenance, and replacement of the lamp board 20. By providing a plurality of support columns twenty-four0 on one side of the PCB board 220 facing the top plate 110, the distances between the PCB board 220 and the top plate 110 can be made the same everywhere, avoiding deflection deformation in the middle of the top plate 110 or deformation after long-term use, and ensuring a relatively uniform brightness effect.

[0070] In addition, in other preferred embodiments of the present invention, the support column 240 can also be protrudingly arranged on the side of the bottom shell 230 facing the PCB board 220, and a plurality of positioning perforations are correspondingly arranged on the PCB board 220. Through the positioning perforations, the PCB board 220 can be accurately positioned on the bottom shell 230 and then detachably connected thereto.

[0071] Furthermore, the diameter of the support column 240 gradually decreases from an end close to the PCB board 220 to an end away from the PCB board 220 .

[0072] Specifically, the diameter of the support column 240 is not the same, but is thick at one end and thin at the other end, wherein the thick end is close to the PCB board 220, and the thin end is away from the PCB board 220 and contacts the top plate 110. The thinner end contacts the top plate 110 to reduce the contact point, and avoids the formation of a light spot on the top plate 110 when light is irradiated at the contact point, thereby improving the lighting display effect of the light-emitting device.

[0073] In addition, please refer to Figures 6-7. An embodiment of the present invention also provides a display screen, which includes a frame 1 and any one of the light-emitting devices 2 mentioned in the above embodiments. The side panel 120 of each of the light-emitting devices 2 can be detachably connected to the frame 1 at one end away from the top panel 110.

[0074] Specifically, the frame 1 is generally a metal frame structure. The bottom of the side panel 120, i.e., the end away from the top panel 110, can be directly connected to the frame 1, such as by plugging or snapping, or can be detachably connected to the frame 1 via the bottom shell 230 of the light-emitting device 2. Here, the bottom shell 230 of the light-emitting device 2 is detachably connected to the side panel 120, the PCB board 220 is detachably connected to the side of the bottom shell 230 facing the top panel 110, and the side of the bottom shell 230 facing away from the PCB board 220 is detachably connected to the frame 1. It should be noted that multiple light-emitting devices 2 are arranged on the same side of the frame 1 to form the display screen for displaying shapes and patterns on one side of the frame 1.

[0075] Here, for the specific structure, connection relationship and technical effects that can be achieved of the light-emitting device 2, please refer to the description of the above embodiments, and no further details will be given here.

[0076] Furthermore, the two opposite side panels 120 in the two adjacent light emitting devices 2 are attached to each other and neither of them covers the UV-printed skin layer 130 .

[0077] Specifically, when multiple light-emitting devices 2 are spliced ​​together, the two side panels 120 of two adjacent light-emitting devices 2 must be attached to each other. In order to avoid dark lines at the junction of the two light-emitting devices 2, the two opposing side panels 120 do not need to be covered with the skin layer 130. This can effectively improve the overall display effect of the display screen.

[0078] In addition, the display screen further includes a connector 3 , one end of the connector 3 extends into the frame 1 and is connected thereto, and the other end of the connector 3 is placed outside the frame 1 and is used to connect to another frame.

[0079] Specifically, in actual applications, multiple display screens may need to be assembled and used, that is, two frames 1 may be connected to each other. This requires the use of the connector 3. The two ends of the connector 3 extend into the interior of the two frames 1 and connect thereto respectively. The connection here includes the structural connection of the physical hardware and also includes the electrical connection. The electrical connection here includes the connection of the conductive wires and the communication connection of the control signal. In this way, the connector 3 can make the expanded use of the display screen possible, thereby expanding the scope of use of the display screen and improving the quality and experience of product use.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, rather than to limit them. Although the embodiments of the present invention have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A light-emitting device, characterized in that, Comprising: A face mask, including a top plate and side plates that are circumferentially connected to the outer periphery of the top plate and extend towards the same side of the top plate; A light board, provided inside the side plates and having a light-emitting surface facing the top plate; Wherein, the top plate is covered with a skin layer printed by UV.

2. The light-emitting device according to claim 1, characterized in that, At least part of the side plates are also covered with a skin layer printed by UV.

3. The light-emitting device according to claim 1, wherein The light board includes a PCB board provided inside the side plates and a plurality of LED lamp beads arranged in an array on the side of the PCB board facing the top plate. A hole-like structure including a plurality of blind holes is provided on the side of the top plate facing the PCB board. The opening of each blind hole faces the PCB board and is used to accommodate one of the LED lamp beads.

4. The light-emitting device according to claim 3, wherein The hole-like structure includes a plurality of horizontal partitions and a plurality of vertical partitions provided on the side of the top plate facing the PCB board; The plurality of horizontal partitions and the plurality of vertical partitions are arranged at equal intervals and intersect with each other to form the plurality of blind holes.

5. The light-emitting device according to claim 4, characterized in that, The thicknesses of the plurality of horizontal partitions and the plurality of vertical partitions are equal, and are 1.4 - 5 times the thickness of the side plates.

6. The light-emitting device according to claim 2, wherein The top plate is polygonal, and a plurality of side plates are circumferentially connected to the outer periphery of the top plate. At least one side plate is covered with the skin layer; Or, the top plate is quadrilateral, and four side plates are circumferentially connected to the outer periphery of the top plate. Two adjacent side plates are both covered with the skin layer; Or, the top plate is circular or elliptical, and the side plates are circumferentially connected to the outer periphery of the top plate in a ring shape, and the ring-shaped side plates are covered with the skin layer.

7. The light-emitting device according to claim 3, wherein, The light board further includes a bottom case and a plurality of support columns; The bottom case is detachably connected to the side plates, and the side of the PCB board facing away from the top plate is detachably connected to the side of the bottom case facing the top plate; One end of the plurality of support columns is connected to the side of the PCB board facing the top plate, and the other end extends towards the top plate.

8. A display screen, characterized in that, Comprising: A frame; A plurality of light-emitting devices as described in any one of claims 1 - 7, and one end of the side plate of each light-emitting device away from the top plate is detachably connected to the frame.

9. The display screen according to claim 8, wherein, Two opposite side plates of two adjacent light-emitting devices are in contact with each other and are not covered with a skin layer printed by UV.

10. The display screen according to claim 8, characterized in that, Further comprising: A connector, one end of the connector extends into the frame and is connected thereto, and the other end of the connector is placed outside the frame and is used to be connected to another frame.

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