CN217086059U

CN217086059U - LED display module and display screen

Info

Publication number: CN217086059U
Application number: CN202220830936.7U
Authority: CN
Inventors: 张运琼; 甘志勇; 白杨; 欧阳琴; 丁崇彬
Original assignee: Shenzhen Absen Optoelectronic Co Ltd
Current assignee: Shenzhen Absen Optoelectronic Co Ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-07-29
Anticipated expiration: 2032-04-11

Abstract

The disclosure relates to an LED display module and a display screen. The LED display module comprises a shell and a lamp panel, wherein a support column is arranged in the shell, a positioning column is arranged on the top surface of the support column, and the diameter of the positioning column is smaller than that of the support column; the locating hole has been seted up to the lamp plate, the locating hole supplies the reference column passes, just the lamp plate supports on the top surface of support column, the lamp plate with the contact surface width is 2mm at least between the support column. This application is through making the width of contact surface between lamp plate and the support column be 2mm at least to make the casting glue because its self viscosity characteristic, mobility is seriously hindered when the contact surface width is greater than 2mm, thereby reduced the casting glue from the leakage between the installation clearance of lamp plate and support column, satisfied the designing requirement, the cost is reduced.

Description

LED display module and display screen

Technical Field

The application belongs to the technical field of show, concretely relates to LED display module assembly and display screen.

Background

At present, LED display module assembly includes casing and lamp plate, and the lamp plate is installed in the casing, considers that it needs higher waterproof grade, needs to carry out the casting glue to light emitting component on the lamp plate and handles, and casting glue surface curing time is half an hour to four hours, and it is mobile liquid during the solidification. Before solidification, the potting adhesive may leak out from the installation gap between the lamp panel and the housing, so that the pins of the light-emitting element are not completely covered by the potting adhesive, and the waterproof grade cannot meet the design requirement. The existing solution is to perform the treatment of leaking stoppage glue at the place where the leaking stoppage glue is leaked, but the method has low efficiency and higher cost, and the leaking stoppage glue flows to the surface of the light-emitting element and can influence the light-emitting element to emit light, thereby reducing the product quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a LED display module assembly and display screen can reduce the casting glue and reveal to the cancellation is beaten stifled and is leaked the gluey process, improves work efficiency and product quality, reduce cost.

The first aspect of the present disclosure discloses a LED display module, including:

the device comprises a shell, wherein a support column is arranged in the shell, a positioning column is arranged on the top surface of the support column, and the diameter of the positioning column is smaller than that of the support column;

the lamp plate, the locating hole has been seted up to the lamp plate, the locating hole supplies the reference column passes, just the lamp plate supports on the top surface of support column, the lamp plate with the contact surface width is 2mm at least between the support column.

In one exemplary embodiment of the present disclosure,

the clearance between the inner wall of the positioning hole and the outer wall of the positioning column is not more than 0.15 mm.

In one exemplary embodiment of the present disclosure,

the lamp plate includes PCB board and a plurality of light emitting component, and is a plurality of light emitting component be the array arrange in on the PCB board, the PCB board has been seted up the locating hole, the PCB board supports on the support column.

In an exemplary embodiment of the present disclosure, the housing includes a back plate and a side wall plate surrounding the back plate;

the back plate is also provided with an annular supporting frame, and the annular supporting frame is in contact with the side wall plate; the side coaming is arranged in a protruding manner compared with the top surface of the annular supporting frame; the periphery of the PCB is supported on the annular supporting frame.

In an exemplary embodiment of the present disclosure, a mounting post is further disposed in the housing, and the mounting post is provided with a first threaded hole;

the PCB board is further provided with a mounting hole, and the PCB board penetrates through the mounting hole through a screw and is connected with the first threaded hole so as to be fixedly connected with the mounting column.

In one exemplary embodiment of the present disclosure,

the back plate is provided with a plurality of first reinforcing ribs and second reinforcing ribs which are arranged in a criss-cross mode, and the supporting columns and/or the mounting columns are arranged on the first reinforcing ribs and the second reinforcing ribs.

In one exemplary embodiment of the present disclosure,

the back plate is further provided with a mounting groove, and a pin header connector connected with the PCB is arranged in the mounting groove.

In one exemplary embodiment of the present disclosure,

the top of the positioning column is used for supporting the cover plate, a second threaded hole is formed in the top of the positioning column, and the second threaded hole is used for being matched with a screw to fixedly install the cover plate.

The second aspect of the disclosure discloses a display screen, including the apron, still include if LED display module assembly, the apron install in on the casing, and cover the lamp plate.

In an exemplary embodiment of the disclosure, a light hole is disposed at a position of the cover plate corresponding to the light emitting element, and is used for allowing light of the light emitting element to pass through.

The scheme of the application has the following beneficial effects:

this application is through making the width of contact surface between lamp plate and the support column be 2mm at least to make the casting glue because its self viscosity characteristic, mobility is seriously hindered when the contact surface width is greater than 2mm, thereby reduced the leakage of casting glue from between the installation clearance of lamp plate and support column, satisfied the designing requirement, and then cancelled the process of stifled leaking glue of beating, improved work efficiency and product quality, the cost is reduced.

Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 shows a schematic structural diagram of an LED display module according to a first embodiment of the present disclosure.

Fig. 2 shows a partial enlarged view at a in fig. 1.

Fig. 3 shows a partial cross-sectional view of fig. 2.

Fig. 4 shows a schematic structural diagram of a housing in an LED display module according to a first embodiment of the disclosure.

Fig. 5 shows a partial enlarged view at B in fig. 4.

Fig. 6 shows a top view of a display screen according to a second embodiment of the disclosure.

Description of reference numerals:

the LED lamp comprises a shell 11, a lamp panel 12, a cover plate 13, a mounting groove 110, a back plate 111, a side wall plate 112, a support column 113, an annular support frame 114, a positioning column 115, a mounting column 116, a first reinforcing rib 117, a second reinforcing rib 118, a positioning hole 121, a mounting hole 122, a PCB 123, a light-emitting element 124 and a light hole 131.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.

The present application will be described in further detail with reference to the following drawings and specific examples. It should be noted that the technical features mentioned in the embodiments of the present application described below may be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

Example one

As shown in fig. 1 to 5, the embodiment of the present disclosure discloses an LED display module, which includes a housing 11 and a lamp panel 12, wherein an installation portion is provided in the housing 11, and the lamp panel 12 is installed on the housing 11 through the installation portion. Specifically, the installation department includes supporting part and location portion, and location portion sets up in one side that casing 11 bottom was kept away from to the supporting part, and during the installation, lamp plate 12 supports on the supporting part to with location portion location fit.

Specifically, the lamp panel 12 includes a PCB (printed Circuit board) board 123 and a plurality of light emitting elements 124, and the PCB board 123 is supported on the supporting portion and positioned by the positioning portion. The PCB 123 is provided with a wiring area and a positioning area, the wiring area and the positioning area are arranged at intervals, various flat cables are arranged in the wiring area, the plurality of light-emitting elements 124 are arranged in the wiring area in an array mode, pins of the light-emitting elements 124 are connected with the flat cables in the wiring area so as to control the action of the light-emitting elements 124 through the PCB 123, the positioning area is an area except the wiring area, and the positioning area is free of the flat cables and electronic components. The light Emitting element 124 may include an led (light Emitting diode) lamp bead, a bulb, and the like. In this embodiment, light emitting component 124 can be an LED lamp bead, and the LED lamp bead is an efficient light emitting device, and can be used in the fields such as illumination and display, and lamp panel 12 subassembly in this embodiment can be used to outdoor display screen.

Illustratively, the housing 11 includes a back plate 111 and a side wall plate 112 surrounding the back plate 111 to form a hollow cylinder structure with one side open. The shape of the back plate 111 may be one of a rectangle, a square or a circle, or may be other irregular shapes. In the embodiment of the present disclosure, the back plate 111 is square, and the side wall plates 112 are arranged around the outer edge of the back plate 111, so that the housing 11 is a rectangular cylinder structure as a whole. Therefore, the finally assembled display screen can be square, the conventional appearance design of the display screen is met, and the universality is good.

The support portion includes a support pillar 113 and a ring-shaped support frame 114 disposed on the back plate 111. The annular supporting frame 114 is arranged in an annular shape, the annular supporting frame 114 is in contact with the side wall plate, the periphery of the PCB 123 is supported on the annular supporting frame 114, the PCB 123 is located in the shell, the side wall plate 112 is arranged in a protruding mode compared with the top surface of the annular supporting frame 114, the PCB 123 is located, and the inner wall of the partial structure is opposite to the outer side wall of the PCB 123. To facilitate the positioning and installation, the side frame plate 112 and the PCB 123 are in clearance fit.

For example, since half of the PCB 123 is flat, the surface price is large, so that the PCB 123 is more uniformly stressed and does not collapse at the center, the PCB 123 may be further supported on the supporting pillars 113, the supporting pillars 113 are arranged in a column shape, the annular supporting frames 114 may be arranged at intervals with the supporting pillars 113, and may be used to support the middle area of the PCB 123, in order to avoid stress concentration, the supporting pillars 113 may be arranged at intervals, and the density degree is determined according to the size of the PCB 123. In the embodiment of the present disclosure, a portion of the supporting pillars 113 is further integrally formed with the annular supporting frame 114, and the portion of the supporting pillars 113 is disposed in a protruding manner relative to an inner annular surface of the annular supporting frame 114, so that the annular supporting frame 114 and the supporting pillars 113 jointly support a peripheral edge of the PCB board.

Furthermore, when the PCB 123 is installed on the housing 11, for better positioning the PCB 123, the positioning area of the PCB 123 is provided with the positioning hole 121, the positioning portion includes the positioning column 115, the positioning column 115 is a column, and the positioning hole 121 is used for the positioning column 115 to pass through, so that when the PCB 123 is positioned, the positioning column 115 can be aligned with the positioning hole 121, and then the PCB 123 is installed on the housing 11 along the direction of the positioning column 115. In order to further improve the positioning accuracy, the positioning holes 121 and the positioning posts 115 may be respectively disposed in a plurality of numbers, and the positioning holes and the positioning posts correspond to each other one by one.

Of course, in order to provide the positioning post 115, the positioning post 115 may be disposed on the top surface of the supporting post 113, the positioning post 115 and the supporting post 113 are coaxially disposed, both may be cylindrical, and the diameter of the positioning post 115 is smaller than that of the supporting post 113, so that when the PCB board is mounted, the positioning post 115 positions the PCB board, and the supporting post 113 simultaneously provides a support for the PCB board 123.

Due to the characteristics of the sealant, the sealant has a viscosity value of 1000 to 2500 centipoise, the lower the viscosity value is, the higher the fluidity is, and after the positioning column 115 passes through the positioning hole, a gap between the positioning column and the positioning hole is easy to cause the sealant to flow out from the positioning hole to cause large leakage. This application is through making the contact surface width L between lamp plate 12 and the support column 113 be 2mm at least, also is the contact surface width L between PCB board and the support column 113 to be 2mm at least. In this case, even if the sealant with a viscosity value of 1000 cps is used for encapsulation, the flow of the sealant between the lamp panel 12 and the supporting column 113 is severely hindered, and the fluidity is greatly reduced. Even if a small amount of sealing glue flows out, the design requirement can be met, the sealing glue deposited between the contact surfaces also plays a role in sealing, the waterproof effect is further improved, the process of plugging and leaking the glue is omitted, the material using amount is reduced, the product cost is reduced, the working efficiency is improved due to the fact that one process is omitted, and the product quality is not influenced by the plugging and leaking glue. In the embodiment of the present disclosure, in order to avoid interference to other parts on the lamp panel, the width L of the contact surface between the lamp panel 12 and the supporting column 113 reaches 2 mm.

For this reason, this application is when the design manufacturing, can select outwards to extend support column 113 and/or to the inside shrinkage of locating hole, thereby enlarge contact surface width L between support column 113 and lamp plate 12, make contact surface width L be 2mm at least between lamp plate 12 and the support column 113, thereby make the gluey mobility of gluing of the contact surface that flows into between lamp plate 12 and support column 113 seriously reduce, so that can not continue to reveal to the backplate direction, thereby the leakage quantity of gluing has been reduced, avoid taking the process of gluing the blocking leakage to mend and glue, the cost is saved and work efficiency has been improved. It will be appreciated that the interface width L may be equal to the radius of the support posts 113 minus the radius of the locating holes.

Further, the gap H between the inner wall of the positioning hole and the outer wall of the positioning post 115 is not more than 0.15 mm. Also considering the characteristics of the sealant, even if the sealant with a viscosity value of 1000 cp is used for encapsulation, the flow of the sealant in the gap H between the positioning hole and the positioning column 115 which is not more than 0.15mmd is seriously hindered, and the flow is greatly reduced. Even if a small amount of sealing glue flows out, the design requirement can be met, and the sealing glue deposited at the gap H also plays a role in sealing, so that the waterproof effect is further improved. In the embodiment of the present disclosure, in order to facilitate positioning and installation, the gap H between the positioning hole and the positioning column 115 may be 0.15 mm.

It will be appreciated that the clearance between the outside wall of the locating post 115 and the inside wall of the locating hole is equal to the radius of the locating hole minus the radius of the locating post 115. During manufacturing, the positioning column 115 can be thickened, so that the gap between the positioning column and the positioning hole is not more than 0.15 mm. It is better to the reduction of gluing with enlarging the area of contact combined action of lamp plate 12 and support column 113.

For example, after the PCB 123 is mounted on the housing 11, in order to connect the PCB 123 and the housing 11 firmly, a fixing structure is further adopted to fix the PCB 123 and the housing 11. For this purpose, a mounting post 116 is further disposed in the housing 11, a first threaded hole is formed in the mounting post 116, a mounting hole 122 is further formed in the positioning region of the PCB 123, and when the PCB 123 is fixed, the PCB 123 passes through the mounting hole 122 through a screw and is connected with the first threaded hole to be fixedly connected with the mounting post 116, so that the PCB 123 and the housing 11 are fixedly connected together. It will be appreciated that the screw has a head which abuts the top surface of the PCB 123, and the gap between the screw and the PCB 123 is sufficiently small that there is little possibility of the sealant leaking therefrom.

Furthermore, the top surfaces of the mounting posts 116, the top surfaces of the supporting posts 113 and the top surface of the annular supporting frame 114 are flush with each other, and when the PCB board 123 is supported on the supporting posts 113 and the annular supporting frame 114, the top surfaces of the mounting posts 116 are just attached to the bottom surface of the PCB board 123, so that interference on the mounting posts 116 is avoided, and subsequent fixed connection is facilitated.

Of course, the fixing manner between the PCB 123 and the housing 11 may also be bonding, for example, a strong glue is applied to the corresponding position of the PCB 123 and the back plate 111, and the two are firmly bonded by the glue.

Illustratively, the back plate 111 is provided with a plurality of first reinforcing ribs 117 and second reinforcing ribs 118 arranged in a criss-cross manner, the first reinforcing ribs 117 may be arranged along the length direction of the back plate 111, and the second reinforcing ribs 118 may be arranged along the width direction of the back plate 111. The strength of the back plate 111 can be enhanced by arranging the first reinforcing ribs 117 and the second reinforcing ribs 118, the supporting columns 113 and/or the mounting columns 116 are/is arranged on the first reinforcing ribs 117 and the second reinforcing ribs 118, the strength of the back plate 111 is enhanced, and meanwhile the supporting columns 113 and the mounting columns 116 are arranged on the first reinforcing ribs 117 and the second reinforcing ribs 118, so that the space can be saved, and the arrangement of the supporting columns 113 and the mounting columns 116 is facilitated. In the embodiment of the present disclosure, the supporting posts 113 are disposed at the intersection of the first reinforcing rib 117 and the second reinforcing rib 118, and in order to match the routing of the PCB board 123, the mounting posts 116 may be partially connected to the first reinforcing rib 117, and the other part may be connected to the second reinforcing rib 118.

Illustratively, the back plate 111 is further provided with a mounting groove 110, the mounting groove 110 is internally provided with a pin header connector connected with the PCB 123, and the pin header connector is used for transmitting an electrical signal between the PCB 123 and an external circuit.

Example two

Based on the LED display module that embodiment one provided, this disclosed embodiment two still provides a display screen, as shown in fig. 1 to fig. 6, it includes apron 13 and aforementioned LED display module, and apron 13 is installed on casing 11 to cover lamp plate 12, protect LED display module, play the effect of safety cover.

Specifically, a second threaded hole is formed in the top of the positioning column 115, and the second threaded hole is used for being matched with a screw to fixedly mount the cover plate 13. Furthermore, a through hole is formed in the cover plate 13 corresponding to the positioning column 115, a screw penetrates through the through hole and is in threaded connection with the second threaded hole, so that the positioning column 115 and the cover plate 13 are fixedly connected, and meanwhile, the top of the positioning column 115 is also used for supporting the cover plate 13.

It is conceivable that, in order to facilitate the light emitting elements 124 to display illumination, the cover plate 13 is provided with light transmission holes 131 at positions corresponding to the light emitting elements 124 for transmitting light of the light emitting elements 124. Of course, a high-transmittance display film may be disposed on the cover 13 corresponding to the light emitting element 124, so as to achieve a display or illumination effect. Since the display screen of the present embodiment has the LED display module in the previous embodiment, all the advantages of the LED display module are achieved, and are not described herein again.

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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description herein, references to the description of the terms "some embodiments," "exemplary," etc. mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or exemplary is included in at least one embodiment or exemplary of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described, it is understood that the above embodiments are illustrative and should not be construed as limiting the present application and that various changes, modifications, substitutions and alterations can be made therein by those skilled in the art within the scope of the present application, and therefore all changes and modifications that come within the meaning of the claims and the description of the invention are to be embraced therein.

Claims

1. The utility model provides a LED display module assembly which characterized in that includes:

2. The LED display module of claim 1,

3. The LED display module of claim 1,

4. The LED display module of claim 3, wherein the housing comprises a back plate and a side wall plate surrounding the back plate;

5. The LED display module of claim 4, wherein a mounting post is further disposed in the housing, the mounting post defining a first threaded hole;

6. The LED display module of claim 5,

7. The LED display module of claim 4,

8. The LED display module of claim 3,

9. A display screen comprises a cover plate and is characterized by further comprising the LED display module set as claimed in any one of claims 3-8, wherein the cover plate is installed on the shell and covers the lamp panel.

10. The display screen of claim 9, wherein the cover plate is provided with a light hole at a position corresponding to the light-emitting element, so as to allow light of the light-emitting element to pass through.