Lamp panel assembly and display device

Abstract

The utility model relates to the technical field of display equipment, and discloses a lamp panel assembly and a display device. The rear cover is made of a metal material; the mounting frame is made of a soft material, the mounting frame is arranged between the lamp panel and the rear cover, the mounting frame is fixed to the rear cover, and the lamp panel is fixed to the mounting frame; and the sealing glue layer is filled at the circumferential edge of the contact area of the rear cover and the mounting frame. According to the lamp panel assembly, the flatness and the structural strength of the whole lamp panel can be guaranteed through the rear cover made of the metal material, meanwhile, the board edge size is guaranteed without a large amount of machining, the machining amount of the rear cover is reduced, the yield is guaranteed, and cost is reduced. The thin-wall part is manufactured by utilizing the advantages of an injection molding process, the limitation of the size of the plate edge is avoided, the problem that the edge glue sealing position of the metal bottom shell is thin and difficult to process is solved, and the yield can be ensured. The sealing glue layer has a certain buffering effect on size changes of the rear cover and the mounting frame caused by temperature difference changes, and the problem that deformation is prone to occurring at high and low temperatures is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of display devices, in particular to a lamp board assembly and a display device. Background Art

[0002] Outdoor display screens are usually assembled by multiple lamp board assemblies. In related technologies, the bottom case of the lamp board assembly is often made of aluminum material. The aluminum bottom case is integrally formed by die-casting, and then the aluminum bottom case is machined to meet the flatness requirements. Subsequently, the lamp board is installed and sealed with glue to form a finished product. Although the lamp board assembly made in this way has excellent flatness and precise outer dimensions, the size of the bottom case board edge is limited and the processing is difficult. The larger the size of a single lamp board assembly, the greater the processing difficulty. Once the board edge is damaged, the product will be directly scrapped, resulting in a relatively high defective rate.

[0003] Another processing method is to integrally form the bottom case with a plastic kit. After the lamp board is installed on the plastic bottom case, it is sealed with glue to form a finished product. The injection molding process is not easily restricted by the board edge size, and the yield rate can be guaranteed. However, the disadvantage is that the flatness is poor and it is easy to deform at high and low temperatures.

[0004] How to improve the flatness of the lamp board assembly while meeting the yield rate has become an urgent problem to be solved. Summary of the Utility Model

[0005] In view of this, the utility model provides a lamp board assembly and a display device to solve the problem that the flatness and the yield rate of the lamp board assembly cannot be taken into account at the same time.

[0006] In a first aspect, the utility model provides a lamp board assembly, including:

[0007] A lamp board;

[0008] A rear cover made of a metal material;

[0009] A mounting frame made of a soft material. The mounting frame is arranged between the lamp board and the rear cover, fixed to the rear cover, and the lamp board is fixed to the mounting frame;

[0010] A sealing glue layer filled in the circumferential edge of the contact area between the rear cover and the mounting frame.

[0011] Beneficial effects: The lamp board assembly provided by the embodiment of the present utility model fixes the lamp board to the mounting frame made of a soft material and then fixes the mounting frame to the rear cover made of a metal material by separately arranging the mounting frame and the rear cover. The rear cover made of a metal material can ensure the structural strength of the entire lamp board and will not be deformed due to high and low temperatures, thus ensuring the overall flatness. At the same time, there is no need for a large amount of machining to ensure the flatness of the rear cover made of a metal material, thereby reducing the processing amount of the rear cover, ensuring the yield rate, and reducing the cost. By setting the mounting frame made of a soft material, the cooperation between the mounting frame and the rear cover makes it possible to use the advantages of the injection molding process to produce thin-walled parts, which are not easily restricted by the edge size of the board, avoiding the problem that the edge sealing position of the metal bottom shell is too thin and difficult to process, and the yield rate can be ensured, realizing process feasibility. At the same time, a sealing glue layer is filled in the circumferential edge of the contact area between the rear cover and the mounting frame. The flexible sealing glue layer has a certain buffering effect on the dimensional changes of the rear cover and the mounting frame caused by temperature differences, preventing problems such as poor flatness and easy deformation at high and low temperatures.

[0012] In an alternative embodiment, the material of the rear cover includes aluminum, and the rear cover is formed by die-casting.

[0013] Beneficial effects: The rear cover made of aluminum material adopts die-cast aluminum process to ensure the flatness and structural strength of the entire lamp board assembly. And the rear cover made of aluminum material does not require a large amount of machining to ensure the edge size, and only simple forming can meet the use requirements, thereby reducing the processing amount of the rear cover made of aluminum material, ensuring the yield rate, and reducing the cost.

[0014] In an alternative embodiment, the material of the mounting frame includes plastic, and the mounting frame is integrally injection-molded.

[0015] Beneficial effects: The mounting frame made of plastic material can use the advantages of the injection molding process to produce thin-walled parts. After the mounting frame is installed on the rear cover, by filling a sealing glue layer in the circumferential edge of the contact area between the rear cover and the mounting frame, it can play a sealing role. At the same time, the flexible sealing glue layer has a certain buffering effect on the dimensional changes of the rear cover and the mounting frame caused by temperature differences, preventing problems such as poor flatness and easy deformation at high and low temperatures.

[0016] In an alternative embodiment, a glue groove is formed around the circumferential edge on the side of the rear cover facing the mounting frame, and the sealing glue layer is accommodated in the glue groove.

[0017] Beneficial effects: A glue groove is formed around the circumferential edge on the side of the rear cover facing the mounting frame, which can ensure that the sealing glue layer is in the glue groove after injection, playing a role in restricting the area and guiding the flow of the sealing glue layer, and ensuring the sealing effect.

[0018] In an alternative embodiment, at least a partial area of the mounting bracket is formed with a sealant-recess cavity, and in the projection of the mounting bracket towards the rear cover, the sealant-recess cavity is within the range of the glue groove.

[0019] Beneficial effects: To ensure the smooth injection of the sealant layer, a sealant-recess cavity is formed through the mounting bracket, and in the projection of the mounting bracket towards the rear cover, the sealant-recess cavity is within the range of the glue groove. Thus, during glue injection, it can ensure that the sealant layer accurately enters the glue groove through the sealant-recess cavity, avoiding glue leakage and overflow.

[0020] In an alternative embodiment, the mounting bracket is provided with a first fixing position, and the rear cover is correspondingly provided with a second fixing position corresponding to the first fixing position, and the first fixing position and the second fixing position are connected by a fixing member.

[0021] Beneficial effects: The first fixing position and the second fixing position cooperate with each other to facilitate the fixed connection between the mounting bracket and the rear cover.

[0022] In an alternative embodiment, the second fixing position is located within the glue groove.

[0023] Beneficial effects: By arranging the second fixing position within the glue groove, the space of the glue groove can be reasonably utilized, and after glue filling, the glue can penetrate into the connection gap between the first fixing position and the second fixing position, preventing the fixing member from loosening, improving the fixing effect, and ensuring the sealing effect at the same time.

[0024] In an alternative embodiment, a fitting portion is formed at the circumferential edge of the mounting bracket around the sealant-recess cavity, the fitting portion extends from the mounting bracket towards the side close to the rear cover, and the fitting portion is installed in the glue groove.

[0025] Beneficial effects: The mounting bracket is formed with a fitting portion, the fitting portion extends from the mounting bracket towards the side close to the rear cover and is installed in the glue groove. Thus, after the mounting bracket and the rear cover are assembled, the fitting portion can be in alignment and cooperation with the glue groove, and after subsequent glue filling, the glue can firmly connect the mounting bracket and the rear cover, ensuring the connection effect between the two.

[0026] In an alternative embodiment, a mounting-bracket edge portion is further formed at the circumferential edge of the mounting bracket, and the mounting-bracket edge portion extends from the mounting bracket towards the side close to the rear cover; the mounting-bracket edge portion and the fitting portion are arranged at intervals, and an assembly cavity is formed in the area between the two;

[0027] A rear-cover edge portion is formed at the circumferential edge of the rear cover, and the rear-cover edge portion extends from the rear cover towards the side close to the mounting bracket; the rear-cover edge portion is adapted to extend into the assembly cavity so that the fitting portion, the rear-cover edge portion and the mounting-bracket edge portion are arranged in an interleaved manner.

[0028] Beneficial effects: When the mounting bracket and the rear cover are in the mounted state, the edge portion of the rear cover extends into the assembly cavity. At this time, the fitting portion, the edge portion of the rear cover, and the edge portion of the mounting bracket are arranged in an interleaved manner, having a labyrinth sealing effect, thereby improving the sealing performance of the lamp board assembly and reducing the possibility of external rainwater or dust entering the interior of the lamp board assembly.

[0029] In an alternative embodiment, the mounting bracket is provided with a plurality of sealant-recessed cavities, and a reinforcing connection portion is provided at intervals between adjacent sealant-recessed cavities.

[0030] Beneficial effects: By providing a reinforcing connection portion at intervals between adjacent sealant-recessed cavities, the structural strength of the mounting bracket can be enhanced, and the degree of deformation of the mounting bracket can be reduced.

[0031] In an alternative embodiment, the glue groove is configured as a through groove that surrounds the mounting bracket for one week.

[0032] Beneficial effects: By configuring the glue groove as a through groove that surrounds the mounting bracket for one week, the difficulty of die-casting the rear cover can be reduced, and the continuity after the injection of the sealant layer can be ensured, improving the sealing effect.

[0033] In a second aspect, the present invention further provides a display device, including a driving circuit and the lamp board assembly as described above; the driving circuit is electrically connected to the lamp board assembly.

[0034] Since the display device includes the lamp board assembly and has the same effects as the lamp board assembly, they will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0036] Figure 1 is an exploded view of the lamp board assembly of the present invention;

[0037] Figure 2 is a cross-sectional view of the lamp board assembly of the present invention;

[0038] Figure 3 is Figure 2 a partial enlarged view of;

[0039] Figure 4 is Figure 1 a partial enlarged view of;

[0040] Figure 5This is a top view of the installation state of the mounting bracket and the rear cover of the present utility model.

[0041] Explanation of reference numerals:

[0042] 1. Mask; 2. Lamp board; 3. Mounting bracket; 31. First fixing position; 32. Sealant recess; 33. Fitting part; 34. Reinforcing connection part; 35. Mounting bracket edge part; 36. Assembly cavity; 4. Rear cover; 41. Second fixing position; 42. Glue groove; 43. Rear cover edge part; 5. Sealant layer. Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0044] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 thus cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0045] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" 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, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0046] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0047] In the related art, there are mainly two manufacturing methods for the lamp board assembly. One is to use aluminum as the bottom shell. The aluminum raw material is die-cast into one piece, and then machined to form the aluminum bottom shell. The lamp board is then installed on the aluminum bottom shell and sealed with glue to form the finished product. Although the lamp board assembly made in this way has excellent flatness and accurate external dimensions, the size of the bottom shell board edge is limited, and the processing is relatively difficult. The larger the size of a single lamp board assembly, the greater the processing difficulty. Once the board edge is damaged, the product will be directly scrapped, resulting in a relatively high defective rate.

[0048] Another processing method is to use plastic as the bottom shell and integrally injection mold the plastic kit. The lamp board is installed on the plastic kit and then sealed with glue to make the finished product. The injection molding process is not easily restricted by the board edge size, and the qualified rate can be guaranteed. However, the disadvantage is that the flatness is poor and it is prone to deformation at high and low temperatures.

[0049] In the embodiment of the present utility model, the lamp board assembly combines a support member made of a metal material and a support member made of a soft material. By using the support member made of a metal material as the rear cover of the entire lamp board assembly, the structural strength of the entire lamp board can be guaranteed, and it will not be deformed due to the influence of high and low temperatures, ensuring the overall flatness. And the support member made of a soft material is set as an intermediate installation structure between the rear cover and the lamp board 2. By taking advantage of the injection molding process to make thin-walled parts, it is not easily restricted by the board edge size, avoiding the problem that the edge sealing position of the metal bottom shell is too thin and difficult to process. While meeting the qualified rate, the flatness of the lamp board assembly is improved.

[0050] The following combines Figures 1 to 5 , to describe the embodiments of the present utility model.

[0051] According to the embodiment of the present utility model, on the one hand, a lamp board assembly is provided, including:

[0052] Lamp board 2;

[0053] Rear cover 4, made of a metal material;

[0054] Mounting frame 3, made of a soft material. The mounting frame 3 is arranged between the lamp board 2 and the rear cover 4. The mounting frame 3 is fixed to the rear cover 4, and the lamp board 2 is fixed to the mounting frame 3;

[0055] Sealing glue layer 5, filled in the circumferential edge of the contact area between the rear cover 4 and the mounting frame 3.

[0056] The lamp board assembly provided by the embodiment of the present utility model, by separately arranging the mounting bracket 3 and the rear cover 4, the mounting bracket 3 is made of a soft material, and the rear cover 4 is made of a metal material. After fixing the lamp board 2 to the mounting bracket 3, and then fixing the mounting bracket 3 to the rear cover 4, it can utilize the rear cover 4 made of metal material to ensure the structural strength of the entire lamp board, and will not be deformed due to high and low temperatures, and the overall flatness is ensured. At the same time, there is no need for a large amount of machining to ensure the flatness of the rear cover 4 made of metal material, thereby reducing the processing amount of the rear cover 4, ensuring the yield rate, and reducing the cost. And by setting the soft material mounting bracket 3, the cooperation between the mounting bracket 3 and the rear cover 4, taking advantage of the injection molding process to make thin-walled parts, is not easily restricted by the edge size of the board, avoiding the problem that the sealing position at the edge of the metal bottom shell is too thin and difficult to process, and the yield rate can be guaranteed, realizing process feasibility; at the same time, a sealing glue layer 5 is filled in the circumferential edge of the contact area between the rear cover 4 and the mounting bracket 3, and the flexible sealing glue layer 5 has a certain buffering effect on the size changes of the rear cover 4 and the mounting bracket 3 caused by temperature difference changes, preventing problems such as poor flatness and easy deformation at high and low temperatures.

[0057] In this embodiment, the material of the rear cover 4 includes aluminum, and the rear cover 4 is formed by die casting.

[0058] The rear cover 4 made of aluminum material adopts die-cast aluminum process to ensure the flatness and structural strength of the entire lamp board assembly.

[0059] And the rear cover 4 made of aluminum material does not require a large amount of machining to ensure the flatness of the rear cover 4 made of metal material, and only simple forming can meet the use requirements, thereby reducing the processing amount of the rear cover 4 made of aluminum material, ensuring the yield rate, and reducing the cost.

[0060] In this embodiment, the material of the mounting bracket 3 includes plastic, and the mounting bracket 3 is integrally injection molded.

[0061] The mounting bracket 3 made of plastic material can utilize the advantages of the injection molding process to make thin-walled parts. After the mounting bracket 3 is installed on the rear cover 4, by filling the circumferential edge of the contact area between the rear cover 4 and the mounting bracket 3 with the sealing glue layer 5, it can play a sealing role. At the same time, the flexible sealing glue layer 5 has a certain buffering effect on the size changes of the rear cover 4 and the mounting bracket 3 caused by temperature difference changes, preventing problems such as poor flatness and easy deformation at high and low temperatures.

[0062] The lamp board assembly of this embodiment further includes a face mask 1. The rear cover 4 formed by die casting with a metal material is used as the bottom plate, a mounting bracket 3 made of plastic material is installed in the middle, and the lamp board 2 is fixed to the mounting bracket 3. Subsequently, a protective face mask 1 is added to the top surface of the lamp board assembly to form the entire lamp board assembly.

[0063] In some embodiments, in combination Figure 4As shown, on one side of the rear cover 4 facing the mounting bracket 3, a glue groove 42 is formed around the circumferential edge, and the sealant layer 5 is accommodated in the glue groove 42.

[0064] On one side of the rear cover 4 facing the mounting bracket 3, a glue groove 42 is formed around the circumferential edge, which can ensure that the sealant layer 5 is within the glue groove 42 after injecting glue, playing a role in restricting the area and guiding the flow of the sealant layer 5 to ensure the sealing effect.

[0065] In some embodiments, as shown in Figure 4 a sealing glue relief cavity 32 is formed through at least part of the area of the mounting bracket 3, and along the projection of the mounting bracket 3 towards the rear cover 4, the sealing glue relief cavity 32 is within the range of the glue groove 42.

[0066] Since the mounting bracket 3 needs to be fixed to the rear cover 4 and the sealant layer 5 is filled after fixation, in order to ensure the smooth injection of the sealant layer 5, a sealing glue relief cavity 32 is formed through the mounting bracket 3, and along the projection of the mounting bracket 3 towards the rear cover 4, the sealing glue relief cavity 32 is within the range of the glue groove 42, so that when injecting glue, it can ensure that the sealant layer 5 accurately enters the glue groove 42 through the sealing glue relief cavity 32, avoiding glue leakage and overflow.

[0067] At the same time, a sealing glue relief cavity 32 is formed through at least part of the area of the mounting bracket 3, which can reduce the weight of the mounting bracket 3, reduce the amount of injection molding material, and lower the cost.

[0068] In some embodiments, as shown in Figure 4 the mounting bracket 3 is provided with a first fixing position 31, and the rear cover 4 is correspondingly provided with a second fixing position 41 at the position corresponding to the first fixing position 31, and the first fixing position 31 and the second fixing position 41 are connected by a fixing member.

[0069] In this embodiment, the first fixing position 31 and the second fixing position 41 can be screw mounting holes that cooperate with each other, and the fixing member can specifically be a screw, and the mounting bracket 3 and the rear cover 4 are fixedly connected by the screw.

[0070] And after the mounting bracket 3 and the rear cover 4 are fixedly connected by the fixing member, glue is poured and sealed around the edge on the front side. After the sealant layer 5 solidifies, the mounting bracket 3 and the rear cover 4 form an integral body, having a good sealing effect and facilitating the subsequent assembly of other components.

[0071] In some embodiments, as shown in Figure 4 the second fixing position 41 is within the glue groove 42.

[0072] By arranging the second fixing position 41 in the glue groove 42, the space of the glue groove 42 can be reasonably utilized, and after glue filling, the glue can penetrate into the connection gap between the first fixing position 31 and the second fixing position 41, preventing the fixing piece from loosening, improving the fixing effect, and ensuring the sealing effect at the same time.

[0073] In some embodiments, as shown in Figure 3 the mounting frame 3 forms a fitting portion 33 at the circumferential edge of the glue-sealing relief cavity 32. The fitting portion 33 extends from the mounting frame 3 toward the side close to the rear cover 4, and the fitting portion 33 is installed in the glue groove 42.

[0074] The mounting frame 3 is formed with a fitting portion 33. The fitting portion 33 extends from the mounting frame 3 toward the side close to the rear cover 4 and is installed in the glue groove 42. Thus, after the mounting frame 3 and the rear cover 4 are assembled, the fitting portion 33 can be aligned and matched with the glue groove 42, and after subsequent glue filling, the glue can firmly connect the mounting frame 3 and the rear cover 4, ensuring the connection effect between the two.

[0075] At the same time, the fitting portion 33 and the glue groove 42 are aligned and matched, which can play a role in positioning and guiding, avoiding misalignment during the assembly of the mounting frame 3 and the rear cover 4.

[0076] In some embodiments, as shown in Figure 3 the circumferential edge of the mounting frame 3 further forms a mounting frame edge-retaining portion 35. The mounting frame edge-retaining portion 35 extends from the mounting frame 3 toward the side close to the rear cover 4; the mounting frame edge-retaining portion 35 and the fitting portion 33 are arranged at intervals, and an assembly cavity 36 is formed in the area between the two;

[0077] the circumferential edge of the rear cover 4 forms a rear cover edge-retaining portion 43. The rear cover edge-retaining portion 43 extends from the rear cover 4 toward the side close to the mounting frame 3; the rear cover edge-retaining portion 43 is adapted to extend into the assembly cavity so that the fitting portion 33, the rear cover edge-retaining portion 43 and the mounting frame edge-retaining portion 35 are staggered.

[0078] The fitting portion 33 is arranged on the relatively inner side of the mounting frame edge-retaining portion 35. Both of them extend from the mounting frame 3 toward the side close to the rear cover 4, and the mounting frame edge-retaining portion 35 and the fitting portion 33 are arranged at intervals, and an assembly cavity 36 is formed in the area between the two. When the mounting frame 3 and the rear cover 4 are in the installed state, the rear cover edge-retaining portion 43 extends into the assembly cavity 36. At this time, the fitting portion 33, the rear cover edge-retaining portion 43 and the mounting frame edge-retaining portion 35 are staggered, having a labyrinth sealing effect, thereby improving the sealing performance of the lamp board assembly and reducing the possibility of external rainwater or dust entering the inside of the lamp board assembly.

[0079] In some embodiments, as shown in Figure 4 the mounting frame 3 is provided with a plurality of glue-sealing relief cavities 32, and a strengthening connection portion 34 is arranged at intervals between adjacent glue-sealing relief cavities 32.

[0080] By providing a reinforcing connection part 34 at intervals between adjacent sealant recesses 32, the structural strength of the mounting bracket 3 can be enhanced, and the degree of deformation of the mounting bracket 3 can be reduced.

[0081] In some embodiments, Figure 4 As shown, the glue groove 42 is configured as a through groove surrounding the mounting bracket 3 for one week.

[0082] By configuring the glue groove 42 as a through groove surrounding the mounting bracket 3 for one week, the difficulty of die-casting the rear cover 4 can be reduced, and the continuity after the injection of the sealant layer 5 can be ensured, improving the sealing effect.

[0083] Moreover, when the mounting bracket 3 and the rear cover 4 are assembled, the installation difficulty of the fitting part 33 can be reduced, and there is no need for repeated alignment.

[0084] According to an embodiment of the present invention, on the other hand, a display device is further provided, which includes a driving circuit and the lamp board assembly as described above;

[0085] The driving circuit is electrically connected to the lamp board assembly.

[0086] In this embodiment, the number of lamp board assemblies is multiple, and a certain number of LED lamp beads are arranged on each lamp board assembly. After the driving circuit is electrically connected to the lamp board assembly, it can control the lighting and extinguishing of the LED lamp beads, and in combination with the control module, by controlling the lighting and extinguishing of the LED lamp beads at different positions, the display requirements of the display device can be met.

[0087] Since the display device includes the lamp board assembly and has the same effects as the lamp board assembly, they will not be elaborated here.

[0088] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the present invention.

Claims

1. A lamp board assembly, characterized in that, Comprising: A lamp board (2); A rear cover (4), made of a metal material; A mounting bracket (3), made of a flexible material, the mounting bracket (3) is disposed between the lamp board (2) and the rear cover (4), the mounting bracket (3) is fixed to the rear cover (4), and the lamp board (2) is fixed to the mounting bracket (3); A sealant layer (5), filled in the circumferential edge of the contact area between the rear cover (4) and the mounting bracket (3).

2. The light board assembly according to claim 1, wherein, The material of the rear cover (4) includes aluminum, and the rear cover (4) is formed by die casting.

3. The light board assembly according to claim 1, characterized in that, The material of the mounting bracket (3) includes plastic, and the mounting bracket (3) is integrally injection molded.

4. The light board assembly according to claim 1, characterized in that, On one side of the rear cover (4) facing the mounting bracket (3), a glue groove (42) is formed around the circumferential edge, and the sealant layer (5) is received in the glue groove (42).

5. The light board assembly according to claim 4, wherein At least a part of the mounting bracket (3) is formed with a sealant relief cavity (32) therethrough. Along the projection of the mounting bracket (3) towards the rear cover (4), the sealant relief cavity (32) is within the range of the glue groove (42).

6. The light board assembly according to claim 4, characterized in that, The mounting bracket (3) is provided with a first fixing position (31), and the rear cover (4) is provided with a second fixing position (41) corresponding to the first fixing position (31). The first fixing position (31) and the second fixing position (41) are connected by a fixing member.

7. The light board assembly according to claim 6, characterized in that, The second fixing position (41) is located in the glue groove (42).

8. The light board assembly according to claim 5, wherein At the circumferential edge of the mounting bracket (3) where the sealant relief cavity (32) is located, a fitting portion (33) is formed. The fitting portion (33) extends from the mounting bracket (3) towards the side close to the rear cover (4), and the fitting portion (33) is installed in the glue groove (42).

9. The light board assembly according to claim 8, wherein A mounting bracket edge portion (35) is further formed at the circumferential edge of the mounting bracket (3). The mounting bracket edge portion (35) extends from the mounting bracket (3) towards the side close to the rear cover (4); the mounting bracket edge portion (35) is spaced from the fitting portion (33), and an assembly cavity (36) is formed in the area between the two; A rear cover edge portion (43) is formed at the circumferential edge of the rear cover (4). The rear cover edge portion (43) extends from the rear cover (4) towards the side close to the mounting bracket (3); the rear cover edge portion (43) is adapted to extend into the assembly cavity (36) so that the fitting portion (33), the rear cover edge portion (43) and the mounting bracket edge portion (35) are staggered.

10. The lamp board assembly according to claim 5, wherein The mounting bracket (3) is provided with a plurality of the sealant relief cavities (32), and a strengthening connection portion (34) is provided at intervals between adjacent sealant relief cavities (32).

11. The light board assembly according to claim 5, wherein The glue groove (42) is configured as a through groove surrounding the mounting bracket (3) for one week.

12. A display device, characterized in that, Including a drive circuit, and a lamp board assembly as described in any one of claims 1 to 11 above; The drive circuit is electrically connected to the lamp board assembly.

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