COB small-spacing LED display unit

Abstract

The utility model belongs to the technical field of LED display, and relates to a COB small-spacing LED display unit which sequentially comprises a box body, a lamp panel adapter plate, a module frame and a COB lamp panel, one face of the lamp panel adapter plate is connected with the COB lamp panel in an inserted mode, and the other face of the lamp panel adapter plate is connected with a HUB adapter plate in the box body in an inserted mode. The module frame is a metal die-casting forming part and comprises an outer frame and longitudinal beams, the longitudinal beams are connected with the two opposite sides of the outer frame, mounting lugs are arranged on the inner side of the module frame, the front ends of the magnets penetrate through the mounting lugs, the rear ends of the magnets abut against mounting columns mounted on the front face of the box body, and the COB lamp panel is matched with the module frame in a magnetic attraction mode so as to be mounted on the front face of the box body. The COB small-spacing LED display screen has the advantages that due to the fact that the module frame is arranged, the COB lamp panels can be tidily laid on the module frame, the flatness of the screen body units is greatly improved, and the technical problem that the flatness of an existing COB small-spacing LED display screen is not ideal enough is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display, in particular to a COB small-pitch LED display unit. Background Art

[0002] With the continuous development of LED display technology, COB (Chip On Board) small-pitch LED display screens have been widely used in various display applications due to their advantages such as high brightness, high resolution, low power consumption, and good color consistency.

[0003] However, there are certain technical problems with the flatness of existing COB small-pitch LED display screens. For example, in existing COB small-pitch LED display screens, it is not easy to control the installation flatness between each LED light board, and it is easy to produce uneven heights, which affects the overall visual effect of the display screen.

[0004] In addition, due to the relatively large heat generation during the operation of COB small-pitch LED display screens, the existing heat dissipation design of the display screens is insufficient, which easily leads to overheating of the device and affects the display effect and stability of the display screen. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a COB small-pitch LED display unit, which solves the technical problem that the flatness of the existing COB small-pitch LED display screen is not ideal enough.

[0007] (2) Technical Solutions

[0008] In order to achieve the above object, the main technical solutions adopted by the utility model include:

[0009] An embodiment of the utility model provides a COB small-pitch LED display unit, which includes a box body, a lamp board adapter board, a module frame installed on the front surface of the box body, and a COB lamp board installed on the module frame. The lamp board adapter board is installed between the box body and the module frame, one side of which is plugged and connected with the COB lamp board, and the other side is plugged and connected with the HUB adapter board in the box body;

[0010] The module frame is a metal die-casting part. The module frame includes an outer frame and a plurality of equally spaced longitudinal beams. The longitudinal beams connect the opposite sides of the outer frame. Installation ears are arranged on the inner side of the module frame. The front end of the magnet penetrates through the installation ear, and the rear end abuts against the installation column installed on the front surface of the box body. The COB lamp board is magnetically coupled with the module frame to be installed on the front surface of the box body.

[0011] Optionally, the installation ears are arranged around the outer frame.

[0012] Optionally, a hard connection connector is provided on the back of the lamp board adapter board for plugging and connecting with the board connector of the HUB adapter board.

[0013] Optionally, the cabinet includes a cabinet frame, a switching power supply and a HUB adapter board, and the switching power supply and the HUB adapter board are installed on the front of the cabinet frame;

[0014] The cabinet frame is a die-cast part, including a board surface part and side walls arranged along the edge of the board surface part. The board surface part is divided into several heat dissipation areas by grooves, and a plurality of heat dissipation long grooves are arranged side by side in the heat dissipation areas to form heat dissipation lines on the board surface part. The front of the cabinet frame is installed together with the lamp board of the COB display screen for heat transfer by contact.

[0015] Optionally, rectangular smooth planes are reserved in the middle of both sides of the board surface part. There are four grooves, which are symmetrically arranged on the front and back of the board surface part and divide the board surface part into four heat dissipation areas. The heat dissipation long grooves are arranged on the front and back of the board surface part to form a "hui"-shaped heat dissipation line.

[0016] Optionally, both the front end and the rear end of the groove are located on the angular bisector of the cabinet frame, and the middle part of the groove is located within the smooth plane.

[0017] Optionally, multiple groups of mounting posts are provided on the front of the board surface part. Among them, one group of mounting posts is arranged horizontally, and the other group of mounting posts is arranged vertically, evenly dividing the board surface part into multiple areas.

[0018] Optionally, connection mounting holes are provided at the right angles on the back of the cabinet frame so that two cabinets can be connected together through a connecting piece.

[0019] (III) Beneficial effects

[0020] The beneficial effects of the present utility model are as follows: For a COB small-pitch LED display unit of the present utility model, since a die-cast cabinet is adopted and a die-cast module frame is provided between the cabinet and the COB lamp board, each COB lamp board can be neatly laid on the module frame, greatly improving the flatness of the screen unit. Compared with the prior art, it can make the flatness of the COB small-pitch LED screen display unit higher and the visual viewing effect better, solving the technical problem that the flatness of the existing COB small-pitch LED display screen is not ideal enough. Description of the drawings

[0021] Figure 1 It is one of the three-dimensional schematic diagrams of the display unit of Embodiment 1 of a COB small-pitch LED display unit of the present utility model;

[0022] Figure 2One of the schematic diagrams of the display box body decomposition of Embodiment 1 of a COB small-pitch LED display unit of the present utility model;

[0023] Figure 3 One of the three-dimensional schematic diagrams of the display unit of Embodiment 1 of a COB small-pitch LED display unit of the present utility model;

[0024] Figure 4 Partial schematic diagram of the display box body of Embodiment 1 of a COB small-pitch LED display unit of the present utility model (the COB light board is not shown);

[0025] Figure 5 One of the schematic diagrams of the display box body decomposition of Embodiment 1 of a COB small-pitch LED display unit of the present utility model;

[0026] Figure 6 Cross-sectional schematic diagram of the display box body of Embodiment 1 of a COB small-pitch LED display unit of the present utility model.

[0027]

Explanation of the reference signs of the drawings

[0028] 1. Box body frame; 10. Smooth plane; 11. Wire passing hole; 12. Heat dissipation long groove; 13. First splicing platform; 14. Mounting post; 15. Groove; 16. Box body handle; 17. Connection mounting hole;

[0029] 2. Switching power supply;

[0030] 3. HUB adapter board; 31. Board connector; 32. Clearance hole; 33. Fastener;

[0031] 4. Light board adapter board; 41. Hard connection connector;

[0032] 5. Module frame; 51. Magnet;

[0033] 6. COB light board; 61. Light board connector. Detailed implementation manners

[0034] In order to better explain the present utility model for easy understanding, the present utility model will be described in detail below in conjunction with the drawings through specific implementation manners. Among them, the orientation nouns such as "upper" and "lower" mentioned in this article are Figure 2 oriented with reference to the orientation of, with the direction where the box body frame 1 is located as the "back surface" and the direction where the COB light board 6 is located as the "front surface".

[0035] A COB small pitch LED display unit proposed in an embodiment of the present utility model includes a box body, a lamp board adapter board, a module frame installed on the front of the box body, and a COB lamp board installed on the module frame. The lamp board adapter board is installed between the box body and the module frame, with one side plugged and connected to the COB lamp board, and the other side plugged and connected to the HUB adapter board in the box body; the module frame is a metal die-casting formed part, which includes an outer frame and multiple equally spaced longitudinal beams connecting opposite sides of the outer frame. Installation ears are provided on the inner side of the module frame. The front end of the magnet penetrates through the installation ear, and the rear end abuts against the installation post installed on the front of the box body. The COB lamp board is magnetically coupled with the module frame to be installed on the front of the box body; due to the use of a die-cast box body, a die-cast module frame is provided between the box body and the COB lamp board, and each COB lamp board can be neatly laid on the module frame, greatly improving the flatness of the screen unit. Compared with the prior art, it can make the flatness of the COB small pitch LED screen display unit higher and the visual viewing effect better, solving the technical problem that the flatness of the existing COB small pitch LED display screen is not ideal enough.

[0036] To better understand the above technical solution, the exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present utility model and to be able to fully convey the scope of the present utility model to those skilled in the art.

[0037] Embodiment 1:

[0038] Refer to Figures 1 to 4 , this Embodiment 1 provides a COB small pitch LED display unit, which includes a box body, a lamp board adapter board 4, a module frame 5 installed on the front of the box body, and a COB lamp board 6 installed on the module frame 5. The lamp board adapter board 4 is installed between the box body and the module frame 5, with one side plugged and connected to the lamp board connector 61 of the COB lamp board 6, and the other side plugged and connected to the HUB adapter board 3 in the box body.

[0039] Refer to Figure 2 and Figure 4 , the module frame 5 is a metal die-casting formed part, which includes an outer frame and multiple equally spaced longitudinal beams connecting opposite sides of the outer frame. Installation ears are provided on the inner side of the module frame 5. The front end of the magnet 51 penetrates through the installation ear, and the rear end abuts against the installation post 14 installed on the front of the box body. The COB lamp board 6 is magnetically coupled with the module frame 5 to be installed on the front of the box body.

[0040] Refer to Figure 4, the installation ears are arranged around the outer frame. A plurality of second splicing platforms are arranged on the back of the outer frame. The second splicing platforms can be machined, with high precision, convenient processing and low difficulty, enabling the outer frame to be closely fitted and abutted against the box body, greatly improving the flatness of the screen body.

[0041] Refer to Figure 4 , a hard connection connector 41 is arranged on the back of the lamp board adapter board 4 and is used for plugging and connecting with the board connector 31 of the HUB adapter board 3.

[0042] Refer to Figure 2 , Figure 5 and Figure 6 , the box body includes a box body frame 1, a switching power supply 2 and a HUB adapter board 3. The switching power supply 2 and the HUB adapter board 3 are installed on the front of the box body frame 1.

[0043] Refer to Figure 1 and Figure 4 , the box body frame 1 is a die-cast part, usually an aluminum die-cast part. The box body frame 1 includes a plate surface part and side walls arranged along the edge of the plate surface part. The plate surface part is divided into several heat dissipation areas by grooves 15. A plurality of heat dissipation long grooves 12 are arranged side by side in the heat dissipation areas to form heat dissipation patterns on the plate surface part. The front of the box body frame 1 and the COB lamp board 6 are installed together through a module frame 5, and heat is transferred by contact, quickly transferring the heat to the plate surface part, ensuring that the working temperature of the COB lamp board 6 is in a lower range and avoiding the phenomenon of cyan floating.

[0044] Refer to Figure 1 and Figure 6 , in order to maintain the mechanical strength of the box body frame 1, rectangular smooth planes 10 are reserved in the middle of both sides of the plate surface part. There are four grooves 15, and they are symmetrically arranged on the front and back of the plate surface part; that is to say, two grooves 15 are arranged on both the front and back of the plate surface part. The front end and the rear end of each groove 15 are located on the angular bisector of the box body frame 1, and the middle of the groove 15 is located within the smooth plane 10, dividing the plate surface part into four heat dissipation areas. The heat dissipation long grooves 12 are arranged on the front and back of the plate surface part, forming a heat dissipation pattern similar to a "hui" character. The cross-section of the heat dissipation long groove 12 is in a wave shape.

[0045] Refer to Figure 4 , as a feasible solution, two groups of mounting posts 14 are arranged on the front of the plate surface part. Each group of mounting posts 14 can be arranged in one row or multiple rows. Among them, one group of mounting posts 14 is arranged horizontally, and the other group of mounting posts 14 is arranged vertically, evenly dividing the plate surface part into multiple areas to correspondingly mount multiple lamp boards. The mounting posts 14 in the same group are connected to each other by reinforcing ribs, which is more firm and reliable.

[0046] Refer to Figure 1, during the actual operation process, connection and installation holes 17 are provided at the right angles on the back of the box body frame 1 so that the backs of two box bodies can be connected and installed together through connecting pieces.

[0047] Continue to refer to Figure 1 , in order to improve the splicing accuracy, a first splicing platform 13 is provided on the outer peripheral side wall of the box body frame 1. The first splicing platform 13 is machined with high precision to ensure the flatness of splicing and facilitate the tight splicing of two adjacent box bodies together.

[0048] As Figure 1 shown, in actual production, a box body handle 16 is provided on one side of the board surface for convenient taking of the box body. Through holes 11 are provided on the upper and lower side walls and the left and right side walls of the box body frame 1.

[0049] Refer to Figure 4 , for the convenience of installation, the HUB adapter board 3 is provided with clearance holes 32 to avoid the installation posts 14. During subsequent installation, the lamp board is adsorbed and installed on the module frame 5 through magnets 51 and then installed on the box body, and the installation operation is convenient. The HUB adapter board 3 is installed on the box body frame 1 through fasteners 33, and the fasteners 33 generally use screws. A board connector 31 is provided on the front of the HUB adapter board 3, and the board connector 31 is used in cooperation with the hard connection connector 41 of the lamp board adapter board 4.

[0050] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; 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 communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present utility model, unless otherwise clearly stipulated and defined, when a first feature is "on" or "under" a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when the first feature is "above", "over" or "on top of" the second feature, it may be that the first feature is directly above or obliquely above the second feature, or it merely means that the horizontal height of the first feature is higher than that of the second feature. When the first feature is "under", "beneath" or "underneath" the second feature, it may be that the first feature is directly below or obliquely below the second feature, or it merely means that the horizontal height of the first feature is lower than that of the second feature.

[0053] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples", etc., mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do 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. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0054] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A COB small-pitch LED display unit, characterized in that: It includes a box body, a lamp board adapter board (4), a module frame (5) installed on the front of the box body, and a COB lamp board (6) installed on the module frame (5). The lamp board adapter board (4) is installed between the box body and the module frame (5), with one side plugged and connected to the COB lamp board (6) and the other side plugged and connected to the HUB adapter board (3) in the box body. The module frame (5) is a metal die-casting part. The module frame (5) includes an outer frame and multiple equally spaced longitudinal beams. The longitudinal beams connect the opposite sides of the outer frame. Installation ears are provided on the inner side of the module frame (5). The front end of the magnet (51) penetrates through the installation ear, and the rear end abuts against the installation post (14) installed on the front of the box body. The COB lamp board (6) is magnetically coupled with the module frame (5) to be installed on the front of the box body.

2. The COB small-pitch LED display unit according to claim 1, characterized in that: The installation ears are arranged around the outer frame.

3. A COB small pitch LED display unit according to claim 2, characterized in that: A hard connection connector (41) is provided on the back of the lamp board adapter board (4) for plugging and connecting with the board connector (31) of the HUB adapter board (3).

4. The COB small-pitch LED display unit according to claim 3, wherein: The box body includes a box body frame (1), a switching power supply (2), and a HUB adapter board (3). The switching power supply (2) and the HUB adapter board (3) are installed on the front of the box body frame (1). The box body frame (1) is a die-casting part, including a plate surface part and side walls arranged along the edge of the plate surface part. The plate surface part is divided into several heat dissipation areas by grooves (15). Multiple heat dissipation long grooves (12) are arranged side by side in the heat dissipation areas to form heat dissipation patterns on the plate surface part. The front of the box body frame (1) is installed together with the lamp board of the COB display screen for heat transfer by contact.

5. The COB small-pitch LED display unit according to claim 4, characterized in that: Rectangular smooth planes (10) are reserved in the middle of both sides of the plate surface part. There are four grooves (15), which are symmetrically arranged on the front and back of the plate surface part and divide the plate surface part into four heat dissipation areas. The heat dissipation long grooves (12) are arranged on the front and back of the plate surface part to form a "hui"-shaped heat dissipation pattern.

6. The COB small-pitch LED display unit according to claim 5, wherein: Both the front end and the rear end of the groove (15) are located on the angular bisector of the box body frame (1), and the middle part of the groove (15) is located within the smooth plane (10).

7. The COB small-pitch LED display unit according to claim 6, wherein: Multiple groups of installation posts (14) are provided on the front of the plate surface part. Among them, one group of installation posts (14) is arranged horizontally, and the other group of installation posts (14) is arranged vertically, evenly dividing the plate surface part into multiple areas.

8. The COB small-pitch LED display unit according to claim 7, wherein: Connection installation holes (17) are provided at the right angles on the back of the box body frame (1) so that two box bodies can be connected together through a connecting piece.

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