CN217235322U - LED module and LED display screen - Google Patents

Abstract

The utility model belongs to the LED field specifically provides a LED module and LED display screen. The LED module comprises a first plastic body, a second plastic body, a third plastic body and a waterproof glue layer, wherein the plastic bodies are integrally molded through injection, the first plastic body and the second plastic body correspond to a first end and a second end of the shell, the third plastic body is arranged in the middle of the shell, the third plastic body is provided with a first connecting hole connected with the pin, the third plastic body is used for pressing the circuit board to the shell, and the waterproof glue layer coats the plastic bodies. The utility model discloses a LED module is including each plastic body that can integrative production, wherein, first and second plastic body are as the end cap, and first connecting hole can be connected with the pin, and third plastics physical stamina compresses tightly the circuit board in the shell, so, need not install the end cap and fix emitting diode in the circuit board step by step, can simplify the production step, improves production efficiency. In addition, the waterproof glue layer is adopted to coat each plastic body, so that the product has good waterproof performance.

Description

LED module and LED display screen

Technical Field

The utility model belongs to the technical field of the LED, more specifically say, relate to a LED module and LED display screen.

Background

The LED module comprises a shell and a circuit board, a certain number of light-emitting diodes are arranged on the circuit board according to a rule, then the circuit board and the shell are packaged, and waterproof treatment is carried out, so that an LED product with a waterproof function can be formed.

In the related art, the circuit board with the light emitting diodes is usually disposed on the housing, and then the housing and the circuit board with the light emitting diodes are placed in an injection mold, and the LED module is formed by one-step injection molding using an injection molding machine. Or, the circuit board provided with the light emitting diode is arranged on the shell, the two ends of the shell are respectively provided with the plugs so as to prevent the waterproof glue with strong flowability from leaking, the pins of the light emitting diode are thermally melted and deformed by using a hot melting machine so as to be connected with the circuit board and prevent the pins and the circuit board from loosening, and then the shell and the circuit board provided with the light emitting diode are arranged in a jig disc, and the waterproof glue is filled between the shell and the circuit board so as to form a waterproof glue layer, so that the LED module is formed. From the material characteristics, the waterproof performance of the LED module formed by plastic injection molding is poorer than that of the LED module formed by waterproof glue. From the production and manufacturing perspective, the production steps of the LED module formed by one-time injection molding are simple, the production efficiency is high, and the production steps of the LED module formed by adopting the waterproof glue are complex, and the production efficiency is low. LED module among the prior art all can not compromise the dual demand of superior waterproof performance and high-efficient production.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a LED module and LED display screen to among the solution prior art, one shot injection moulding's LED module perhaps utilizes waterproof glue fashioned LED module, can't compromise the technical problem of the dual demand of waterproof performance and high-efficient production.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a LED module, which comprises an outer shell, circuit board and emitting diode, the shell middle part is located to the circuit board, one side of circuit board towards the shell is located to emitting diode's illuminating part, emitting diode's pin is towards the direction that deviates from the shell and is extended, the LED module still includes waterproof glue film, and integrative injection moulding's first plastomer, second plastomer and third plastomer, first plastomer and second plastomer correspond first end and the second end of locating the shell, the shell middle part is located to the third plastomer, the third plastomer is equipped with and is used for the first connecting hole of being connected with the pin, the third plastomer is used for compressing tightly the circuit board in the shell, the first plastomer of waterproof glue film cladding, second plastomer and third plastomer.

In some embodiments, the third plastic body has a pressing portion for pressing the circuit board to the housing, and the first connecting hole is disposed in the pressing portion.

In some embodiments, the pressing portion is a pressing groove formed in a side of the third plastic body facing the circuit board, the circuit board is embedded in the pressing groove, and the first connecting hole is formed in a bottom surface of the pressing groove.

In some embodiments, a groove is further formed in a surface of the third plastic body, which faces away from the circuit board, and the groove is communicated with the abutting groove.

In some embodiments, the LED module further comprises a connection structure, and the first plastic body and the second plastic body are respectively connected to the housing through the connection structure.

In some embodiments, the connecting structure comprises a limiting groove and a limiting block which are matched in a clamping manner, the limiting block is convexly arranged on the first plastic body and the second plastic body, and the limiting groove is arranged at the position, corresponding to the limiting block, of the side wall of the shell.

In some embodiments, the two opposite sides of the first plastic body and the two opposite sides of the second plastic body are respectively provided with a limiting block in a protruding manner, the two opposite inner side walls of the first end of the shell and the two opposite inner side walls of the second end of the shell are respectively provided with a limiting groove, the two limiting blocks of the first plastic body are correspondingly clamped with the two limiting grooves of the first end of the shell, and the two limiting blocks of the second plastic body are correspondingly clamped with the two limiting grooves of the second end of the shell.

In some embodiments, the connecting structure further includes a second connecting hole, a third connecting hole and a connecting member, the first plastic body and the second plastic body are respectively provided with the second connecting hole, the housing is correspondingly provided with a plurality of third connecting holes, the second connecting hole on the first plastic body is connected with one of the third connecting holes on the housing through a connecting member, and the second connecting hole on the second plastic body is connected with another third connecting hole on the housing through another connecting member.

In some embodiments, the second connecting hole and the third connecting hole are both pin holes, and the connecting member is a pin;

or the second connecting hole and the third connecting hole are both threaded holes, and the connecting piece is a screw.

The utility model provides an above-mentioned one or more technical scheme in the LED module have one of following technological effect at least: the utility model provides a LED module is including the first plastic body that can utilize the integrative production of injection molding machine, the second plastic body and the third plastic body, wherein, the first plastic body and the second plastic body correspond first end and the second end of locating the shell, as the end cap, thereby can prevent that the waterproof glue from leaking when the encapsulating, and the third plastic body is when moulding plastics, can form the first connecting hole of cladding emitting diode's pin, thereby make the third plastic body can be connected with the pin, and the third plastic physical stamina compresses tightly the circuit board on the shell, and then can prevent to take place to become flexible between emitting diode and the circuit board, so, do not need the substep to install the end cap and adopt the hot melt machine with fixed emitting diode on the circuit board, the production step of LED module has been simplified, and the production efficiency is improved. Further, the utility model provides a LED module adopts waterproof glue film to come each plastic body of cladding, can guarantee that the LED module has good waterproof performance.

The utility model discloses another technical scheme is: the utility model provides a LED display screen, includes display screen main part and above-mentioned LED module, the display screen main part is located to the LED module.

The utility model provides an above-mentioned one or more technical scheme in the LED display screen have one of following technological effect at least: the utility model provides a LED display screen adopts above-mentioned LED module to can improve the production efficiency of LED display screen, can also strengthen the waterproof performance of LED display screen, prolong the life of LED display screen.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic view of an overall structure of an LED module according to an embodiment of the present invention;

fig. 2 is an exploded view of the LED module shown in fig. 1;

fig. 3 is a flowchart of a method for producing an LED module according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1. a housing; 11. a lens;

2. a circuit board;

3. a light emitting diode; 31. a light emitting section; 32. a pin;

4. a cable;

5. a first plastic body;

6. a second plastic body;

7. a third plastic body; 71. a first connection hole; 72. a pressing part; 73. a groove;

8. a waterproof glue layer;

9. a connecting structure; 91. a limiting block; 92. a limiting groove; 93. a second connection hole; 94. a third connection hole; 95. a connecting member.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to fig. 1 to 3 and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Reference throughout the specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the invention. The appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like in various places in the specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 and fig. 2, wherein fig. 1 is a schematic diagram of an overall structure of an LED module according to an embodiment of the present invention, and fig. 2 is an exploded view of the LED module shown in fig. 1.

As shown in fig. 1 and 2, an embodiment of the utility model provides a LED module, this LED module includes shell 1, circuit board 2, emitting diode 3 and a set of cable 4, shell 1 middle part is located to circuit board 2, and emitting diode 3's illuminating part 31 is located circuit board 2 towards one side of shell 1, and emitting diode 3's pin 32 extends towards the direction that deviates from shell 1, and a set of cable 4 corresponds the electricity with emitting diode 3's two pins 32 and is connected to the power supply of emitting diode 3, just shell 1 deviates from the protruding lens 11 that is equipped with in one side of circuit board 2, and the light that emitting diode 3's illuminating part 31 sent jets out through lens 11. Further, the LED module further comprises a first plastic body 5, a second plastic body 6, a third plastic body 7 and a waterproof glue layer 8. Wherein, first plastic body 5, the integrative injection moulding of second plastic body 6 and third plastic body 7, first plastic body 5 and second plastic body 6 correspond first end and the second end of locating shell 1, shell 1 middle part is located to third plastic body 7, third plastic body 7 is equipped with the first connecting hole 71 that is used for being connected with pin 32, third plastic body 7 is used for compressing tightly circuit board 2 in shell 1, and each plastic body all locates the one side that shell 1 deviates from lens 11, 8 first plastic bodies of waterproof glue layer cladding 5, second plastic body 6 and third plastic body 7.

The LED module provided in the embodiment comprises a first plastic body 5, a second plastic body 6 and a third plastic body 7 which can be integrally produced by an injection molding machine, wherein the first plastic body 5 and the second plastic body 6 are correspondingly arranged at the first end and the second end of the shell 1 and are used as plugs, so that waterproof glue can be prevented from leaking out during glue pouring, and the third plastic body 7 can form a first connecting hole 71 of a connecting hole for coating a pin 32 of the LED 3 during injection molding, so that the third plastic body 7 can be connected with the pin 32, the circuit board 2 can be tightly pressed on the shell 1 by the third plastic body 7, and further the looseness between the LED 3 and the circuit board 2 can be prevented, so that the plugs do not need to be installed step by step and a hot melting machine is not needed to fix the LED 3 on the circuit board 2, the production steps of the LED module are simplified, and the production efficiency is improved. Further, the LED module that this embodiment provided adopts waterproof glue layer 8 to come each plastic body of cladding, can guarantee that the LED module has good waterproof performance.

In addition, in the related art, during glue filling, since the molecule mobility of the waterproof glue is strong, the waterproof glue is easy to permeate into the lens 11 from the gap between the circuit board 2 and the housing 1, thereby affecting the optical performance and the aesthetic property of the lens 11, while in this embodiment, the pin 32 of the light emitting diode 3 and the compression circuit board 2 are coated by the third plastic body 7, since the molecule mobility of the plastic is poorer than that of the waterproof glue, the gap between the circuit board 2 and the housing 1 can be sealed, and during glue filling, the waterproof glue can be prevented from permeating into the lens 11, thereby ensuring the optical performance and the aesthetic property of the lens 11.

Referring to fig. 2, in another embodiment of the present invention, the third plastic body 7 has a pressing portion 72, the pressing portion 72 is used for pressing the circuit board 2 to the housing 1, and the first connecting hole 71 is disposed in the pressing portion 72. Wherein, the pressing part 72 may be a plane or a groove structure.

In practical situations, the circuit board 2 preassembled with the light emitting diode 3 is firstly installed in the middle of the housing 1, wherein the pins 32 of the light emitting diode 3 deviate from the housing 1, and when the third plastic body 7 is formed by injection molding by using an injection molding machine on one side of the housing 1 deviating from the lens 11, the first connection holes 71 used for coating and connecting the pins 32 of the light emitting diode 3 can be directly formed, and one side of the third plastic body 7 facing the circuit board 2 can also directly form a plane contacting with the circuit board 2, or a groove-shaped structure used for embedding the circuit board 2 can compress the circuit board 2 to the housing 1, so that the relative position between the light emitting diode 3 and the circuit board 2 is indirectly fixed.

Further, as shown in fig. 2, in the present embodiment, the pressing portion 72 is a pressing groove disposed on a surface of the third plastic body 7 facing the circuit board 2, the circuit board 2 is embedded in the pressing groove, and the first connection hole 71 is disposed on a bottom surface of the pressing groove. Wherein, the size of the shape of the pressing groove is adapted to the size of the shape of the circuit board 2.

In this embodiment, the pressing portion 72 is configured as a pressing groove adapted to the shape and size of the circuit board 2, so that the position of the third plastic body 7 on the housing 1 can be limited, and the third plastic body 7 is prevented from slipping during glue filling, thereby affecting the waterproof performance of the product.

Further, as shown in fig. 2, in this embodiment, a groove 73 is further formed on a surface of the third plastic body 7 away from the circuit board 2, and the groove 73 is communicated with the abutting groove.

In practice, when each plastic body is injection molded by an injection molding machine, pressure is applied to each plastic body. When pressure is applied to the third plastic body 7, the circuit board 2 and the elements on the circuit board 2 below the third plastic body are easily damaged, so that the electrical performance of the LED module is affected. In the embodiment, the groove 73 formed in the side of the third plastic body 7 away from the circuit board 2 is communicated with the pressing groove formed in the side of the third plastic body 7 toward the circuit board 2, so that a through slot hole can be formed, and when pressure is applied to the third plastic body 7, the circuit board 2 and various elements on the circuit board 2 can be avoided, thereby reducing the possibility of damage and ensuring the yield.

Referring to fig. 2, in another embodiment of the present invention, the LED module further includes a connecting structure 9, and the first plastic body 5 and the second plastic body 6 are respectively connected to the housing 1 through the connecting structure 9.

After the glue filling is finished, the waterproof glue layer 8 covers all the plastic bodies, and the first plastic body 5 and the second plastic body 6 are respectively connected with the shell 1 through the two connecting structures 9, so that the waterproof glue layer 8 and the third plastic body 7 are also indirectly connected with the shell 1, and the product is tightly assembled.

Referring to fig. 2, in another embodiment of the present invention, the connection structure 9 includes a stop block 91 and a stop groove 92, the stop block 91 is protruded from the first plastic body 5 and the second plastic body 6, and the stop groove 92 is disposed at a position of the side wall of the housing 1 corresponding to the stop block 91.

When utilizing first plastic body 5 of injection molding machine injection moulding and second plastic body 6, can injection moulding stopper 91 simultaneously, have the advantage of making simply to can with the spacing groove 92 joint on the shell 1 in the fashioned while, needn't be assembled separately and connected, have the advantage of connecting swiftly. In addition, after the limiting groove 92 and the limiting block 91 are adaptive and clamped, when glue is filled, the first plastic body 5 and the second plastic body 6 can be prevented from sliding on the shell 1, so that the waterproof glue is prevented from leaking and the working environment is polluted.

Further, as shown in fig. 2, in this embodiment, two opposite sides of the first plastic body 5 and two opposite sides of the second plastic body 6 are both provided with a protruding limiting block 91, two opposite inner side walls of the first end of the housing 1 and two opposite inner side walls of the second end of the housing 1 are both provided with a limiting groove 92, the two limiting blocks 91 of the first plastic body 5 are correspondingly clamped with the two limiting grooves 92 of the first end of the housing 1, and the two limiting blocks 91 of the second plastic body 6 are correspondingly clamped with the two limiting grooves 92 of the second end of the housing 1. Specifically, two limit blocks 91 on the first plastic body 5 and two limit blocks 91 on the second plastic body 6 are respectively arranged along a direction perpendicular to a connecting line between the first end and the second end of the housing 1.

The two opposite sides of the first plastic body 5 and the two opposite sides of the second plastic body 6 are provided with the limiting blocks 91, so that the first plastic body 5 and the second plastic body 6 can be respectively connected with the shell 1 at multiple points, and the connection stability between each plastic body and the shell 1 can be improved. In addition, two limiting blocks 91 on the first plastic body 5 are arranged on two opposite sides of the first plastic body, and two limiting blocks 91 on the second plastic body 6 are also arranged on two opposite sides of the second plastic body, so that the distance between two connecting points can be increased as much as possible, and the connecting stability between each plastic body and the shell 1 can be improved.

It can be understood that the first plastic body 5 and the second plastic body 6 can also be respectively injection-molded into the limiting groove 92, and the position of the sidewall of the housing 1 corresponding to the limiting groove 92 is set as the limiting block 91, thereby forming the connecting structure 9.

Referring to fig. 1 and 2, in another embodiment of the present invention, the connecting structure 9 further includes a second connecting hole 93, a third connecting hole 94 and a connecting member 95, the first plastic body 5 and the second plastic body 6 are respectively provided with the second connecting hole 93, the housing 1 is correspondingly provided with a plurality of third connecting holes 94, the second connecting hole 93 on the first plastic body 5 is connected with one of the third connecting holes 94 on the housing 1 through a connecting member 95, and the second connecting hole 93 on the second plastic body 6 is connected with another third connecting hole 94 on the housing 1 through another connecting member 95.

In this embodiment, one connecting member 95 is inserted between the second connecting hole 93 of the first plastic body 5 and the corresponding third connecting hole 94 of the housing 1, and another connecting member 95 is inserted between the second connecting hole 93 of the second plastic body 6 and the corresponding third connecting hole 94 of the housing 1, so that the first plastic body 5 and the second plastic body 6 can be connected to the housing 1 respectively. In addition, the connection mode has the advantage of reliable connection.

Further, as shown in fig. 1 and 2, in the present embodiment, the second connecting hole 93 and the third connecting hole 94 are both pin holes, and the connecting member 95 is a pin; alternatively, the second connecting hole 93 and the third connecting hole 94 are both threaded holes, and the connecting member 95 is a screw.

In practical conditions, the screw and the pin are low in cost, and the first plastic body 5 and the second plastic body 6 are respectively connected to the shell 1 through the screw or the pin, so that the production cost of the LED module can be effectively controlled.

In some embodiments, as shown in fig. 1 and fig. 2, the first plastic body 5 and the second plastic body 6 are respectively provided with a limiting block 91 in a protruding manner, a limiting groove 92 is provided on a side wall of the housing 1 corresponding to the limiting block 91, meanwhile, the first plastic body 5 and the second plastic body 6 are respectively provided with a second connecting hole 93, and the housing 1 is correspondingly provided with a plurality of third connecting holes 94. In actual conditions, through the adaptation joint between spacing groove 92 and injection moulding's stopper 91, in the process of formation waterproof glue layer 8 afterwards, can prevent that first plastic body 5 and second plastic body 6 from taking place to slide on shell 1 to cause waterproof glue to leak, pollute operational environment. And the encapsulating forms waterproof glue layer 8 after, can connect first plastic body 5 and second plastic body 6 respectively on shell 1 through connecting piece 95 to improve connection stability, strengthen assembly strength.

Referring to fig. 1 and 2, another embodiment of the present invention provides an LED display screen, which includes a display screen main body (not shown) and LED modules in the above embodiments, wherein the LED modules are disposed in the display screen main body.

The LED display screen that this embodiment provided adopts the LED module in above-mentioned embodiment to can improve the production efficiency of LED display screen, can also strengthen the waterproof performance of LED display screen, prolong the life of LED display screen.

Referring to fig. 3, fig. 3 is a flowchart illustrating a method for producing an LED module according to an embodiment of the present invention.

As shown in fig. 1 to fig. 3, an embodiment of the present invention provides a method for producing an LED module, for producing the LED module in the above embodiment, the method includes the following steps:

s10: the light emitting diode 3 is arranged on the circuit board 2, and the circuit board 2 is arranged in the middle of the shell 1. The light emitting part 31 of the light emitting diode 3 is arranged on one side of the circuit board 2 facing the housing 1, the pins 32 of the light emitting diode 3 are arranged away from the housing 1, and a group of cables 4 are electrically connected with the two pins 32 of the light emitting diode 3 correspondingly.

S20: by using an injection molding machine, a first plastic body 5 and a second plastic body 6 are formed at the first end and the second end of the housing 1 by injection molding correspondingly, and a third plastic body 7 is formed at the middle part of the housing 1 by injection molding, wherein a first connecting hole 71 for connecting with the pin 32 is formed on the third plastic body 7 by injection molding at the position corresponding to the pin 32.

S30: waterproof glue is poured among the first plastic body 5, the second plastic body 6 and the third plastic body 7 to form a waterproof glue layer 8.

The method for producing the LED module according to this embodiment can use an injection molding machine to mold the first plastic body 5 and the second plastic body 6 serving as the plugs, and the third plastic body 7 for connecting the circuit board 2 and the light emitting diode 3 at a time, and does not need to produce the plugs separately, and does not need to fix the light emitting diode 3 to the circuit board 2 by an additional process, so as to simplify the steps of producing the LED module and improve the production efficiency.

Further, as shown in fig. 2, in step S20, when the first plastic body 5 and the second plastic body 6 are injection molded, the pressing groove and the groove 73 in the above embodiment are injection molded at the same time, so as to prevent the third plastic body 7 from slipping during glue filling, thereby affecting the waterproof performance of the product, and the circuit board 2 and the elements on the circuit board 2 can be avoided during injection molding pressing, thereby reducing the possibility of damaging the circuit board 2 and the elements thereon, and in addition, the limiting block 91 is injection molded at the same time, and is adapted and clamped with the limiting groove 92 on the housing 1, thereby preventing the first plastic body 5 and the second plastic body 6 from slipping on the housing 1, thereby causing leakage of waterproof glue and polluting the working environment.

Further, as shown in fig. 1 and 2, the production method further includes the steps of:

s40: a second connection hole 93 and a third connection hole 94, which are communicated with each other, are drilled between the first plastic body 5 and the outer case 1, and between the second plastic body 6 and the outer case 1 by a drill.

S50: a connecting member 95 is inserted between the corresponding second connecting hole 93 and third connecting hole 94, so that the first plastic body 5 and the second plastic body 6 are respectively connected to the housing 1, thereby performing a reinforcing function.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An LED module comprises a shell, a circuit board and a light emitting diode, wherein the circuit board is arranged in the middle of the shell, the light-emitting part of the light-emitting diode is arranged on one side of the circuit board facing the shell, the pins of the light-emitting diode extend in the direction departing from the shell, it is characterized in that the LED module also comprises a waterproof glue layer, a first plastic body, a second plastic body and a third plastic body which are integrally molded by injection, the first plastic body and the second plastic body are correspondingly arranged at the first end and the second end of the shell, the third plastic body is arranged in the middle of the shell and provided with a first connecting hole for connecting with the pin, the third plastic body is used for pressing the circuit board on the shell, and the waterproof glue layer coats the first plastic body, the second plastic body and the third plastic body.

2. The LED module of claim 1, wherein: the third plastic body is provided with a pressing part, the pressing part is used for pressing the circuit board on the shell, and the first connecting hole is formed in the pressing part.

3. The LED module of claim 2, wherein: the pressing part is a pressing groove formed in one surface, facing the circuit board, of the third plastic body, the circuit board is embedded in the pressing groove, and the first connecting hole is formed in the bottom surface of the pressing groove.

4. The LED module of claim 3, wherein: and a groove is further formed in one surface of the third plastic body, which is far away from the circuit board, and the groove is communicated with the abutting groove.

5. The LED module of any of claims 1-4, wherein: the LED module further comprises a connecting structure, and the first plastic body and the second plastic body are connected to the shell through the connecting structure respectively.

6. The LED module of claim 5, wherein: the connecting structure comprises a limiting groove and a limiting block, wherein the limiting block is convexly arranged on the first plastic body and the second plastic body, and the limiting groove is arranged at the position, corresponding to the limiting block, of the side wall of the shell.

7. The LED module of claim 6, wherein: relative both sides on the first plastic body with relative both sides are all protruding to be equipped with on the second plastic body the stopper, the first two inside walls that are relative of serving of shell with the second of shell is served relative two inside walls and is all equipped with the spacing groove, two on the first plastic body the stopper with two of the first end of shell the spacing groove corresponds the joint, two on the second plastic body the stopper with two of the second end of shell the spacing groove corresponds the joint.

8. The LED module of claim 5, wherein: the connecting structure further comprises a second connecting hole, a third connecting hole and a connecting piece, the first plastic body and the second plastic body are respectively provided with the second connecting hole, the shell is correspondingly provided with a plurality of third connecting holes, the second connecting hole in the first plastic body is connected with one of the third connecting holes in the shell through one of the connecting pieces, and the second connecting hole in the second plastic body is connected with the other of the third connecting holes in the shell through the other connecting piece.

9. The LED module of claim 8, wherein: the second connecting hole and the third connecting hole are both pin holes, and the connecting piece is a pin;

or the second connecting hole and the third connecting hole are both threaded holes, and the connecting piece is a screw.

10. An LED display screen, its characterized in that: the LED module comprises a display screen main body and the LED module set in any one of claims 1-9, wherein the LED module set is arranged on the display screen main body.

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