CN219997788U

CN219997788U - Rear cover and LED display device with same

Info

Publication number: CN219997788U
Application number: CN202320979540.3U
Authority: CN
Inventors: 叶志勇; 郑金龙; 黄学祥
Original assignee: Leyard Optoelectronic Co Ltd; Shenzhen Leyard Optoelectronic Co Ltd
Current assignee: Leyard Optoelectronic Co Ltd; Shenzhen Leyard Optoelectronic Co Ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-11-10
Anticipated expiration: 2033-04-20

Abstract

The utility model provides a rear cover and an LED display device with the same, wherein the rear cover comprises a cover body and injection molding ribs arranged on the front side of the cover body, the cover body is provided with two first side edges which are arranged in parallel, two second side edges which are arranged in parallel and a plurality of third side edges, the two second side edges are arranged between the two first side edges, one third side edge is connected between the first side edge and the second side edge, the third side edge and the corresponding first side edge and second side edge are arranged in an angle, and the injection molding ribs are arranged between the first side edge and the second side edge. By the technical scheme provided by the utility model, the problem that the rear cover in the related technology is easy to shrink and deform can be solved.

Description

Rear cover and LED display device with same

Technical Field

The utility model relates to the technical field of electronic products, in particular to a rear cover and an LED display device with the same.

Background

With the development of LED display technology, full-color indoor LED display devices are also generated, and the lives of people are greatly enriched.

In the related art, the LED display device includes a case, an LED module disposed at a front side of the case, and a rear cover disposed at a rear side of the case. The rear cover is made of high polymer PC material, and is injection molded on an injection molding machine through a die, so that the required functions of the product are met, and the precision, the strength and the mass production of the product are realized.

However, the rear cover in the related art is easily deformed by shrinkage during injection molding, which affects product assembly.

Disclosure of Invention

The utility model provides a rear cover and an LED display device with the same, which are used for solving the problem that the rear cover in the related art is easy to shrink and deform.

According to one aspect of the present utility model, there is provided a rear cover of an LED display device, the rear cover including a cover body and injection molding ribs disposed on a front side of the cover body, the cover body having two parallel first sides, two parallel second sides, and a plurality of third sides, the two second sides being disposed between the two first sides, one third side being connected between the first sides and the second sides, and the third sides being disposed at an angle to the corresponding first sides and second sides, the injection molding ribs being disposed between the first sides and the second sides.

Further, the injection molding rib comprises a first inclined rib, and two ends of the first inclined rib extend to the first side edge and the second side edge respectively.

Further, the injection molding rib further comprises a first reinforcing rib, a first third side edge is arranged between the first end of the first side edge and the first end of the second side edge, the second end of the first side edge is connected with the second third side edge, the second end of the second side edge is connected with the third side edge, the first end of the first reinforcing rib is connected with the first inclined rib, and the second end of the first reinforcing rib is connected with the second third side edge or the third side edge.

Further, the first reinforcing rib comprises a first section and a second section, an included angle is formed between the first section and the first inclined rib, the second section is arranged in parallel with the first inclined rib, two ends of the first section are respectively connected with the first inclined rib and the first end of the second section, and the second end of the second section is connected with the third side edge.

Further, the injection molding rib further comprises a second inclined rib parallel to the first inclined rib, the second inclined rib is located between the first inclined rib and the first third side edge, the injection molding rib further comprises a second reinforcing rib, and the second reinforcing rib is connected between the first inclined rib and the second inclined rib.

Further, the lid includes apron and bounding wall, and a plurality of first sides, a plurality of second side and a plurality of third side enclose into the outer border of apron jointly, and the bounding wall is located the front side of lid and encloses to establish at the outer border of lid, moulds plastics the muscle setting in the front side of apron.

Further, the cover body is provided with an indication lamp hole penetrating along the front and the back.

Further, the rear side of the cover body is provided with a plurality of convex ribs which are arranged at intervals, the convex ribs protrude out of the rear surface of the cover body, and the indication lamp holes penetrate through the side walls of the convex ribs.

Further, a decorative strip is stuck on the rear side of the cover body; and/or, the front side of the cover body is provided with a stop buckle and a clamping buckle, the stop buckle is in stop fit with a stop groove of the box body, and the clamping buckle is in clamping fit with a clamping groove of the box body.

According to another aspect of the present utility model, there is provided an LED display device including: a case; the LED module is arranged at the front side of the box body; and the rear cover is arranged at the rear side of the box body and is the rear cover of the LED display device.

By applying the technical scheme of the utility model, the rear cover comprises the cover body and the injection molding rib arranged at the front side of the cover body, and as the third side edge is connected between the first side edge and the second side edge, when injection molding is performed, the corners formed by the third side edge and the first side edge are contacted with the injection mold, reaction force can be formed, the corners formed by the second side edge and the third side edge are contacted with the injection mold, reaction force can also be formed, a plurality of reaction forces can not act on the center of the cover body at the same time, and the reaction force can be used for forming dispersion effect on injection molding internal stress, so that the injection molding internal stress is dispersed, and the shrinkage deformation of the rear cover during injection molding can be weakened.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic structural view of a rear cover provided according to an embodiment of the present utility model;

FIG. 2 shows still another schematic structural view of a rear cover provided according to an embodiment of the present utility model;

fig. 3 shows a partial enlarged view at a in fig. 2;

FIG. 4 illustrates a front view of a rear cover provided in accordance with an embodiment of the present utility model;

fig. 5 shows a rear view of a rear cover provided according to an embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. a cover body; 11. a first side; 12. a second side; 13. a third side; 14. a cover plate; 15. coaming plate; 16. an indicator light hole; 17. convex ribs; 18. a stop button; 19. a clamping buckle;

20. injection molding ribs; 21. a first diagonal rib; 22. a first reinforcing rib; 221. a first section; 222. a second section; 23. second inclined ribs; 24. and a second reinforcing rib.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 5, an embodiment of the present utility model provides a rear cover of an LED display device, the rear cover includes a cover body 10 and an injection molding rib 20 disposed on a front side of the cover body 10, the cover body 10 has two parallel first sides 11, two parallel second sides 12 and a plurality of third sides 13, the two second sides 12 are disposed between the two first sides 11, a third side 13 is connected between the first sides 11 and the second sides 12, the third side 13 and the corresponding first sides 11 and second sides 12 are disposed at an angle, and the injection molding rib 20 is disposed between the first sides 11 and the second sides 12.

By applying the technical scheme of the utility model, the rear cover comprises the cover body 10 and the injection molding rib 20 arranged at the front side of the cover body 10, and since one third side edge 13 is connected between the first side edge 11 and the second side edge 12, when injection molding is performed, the corners formed by the third side edge 13 and the first side edge 11 are contacted with the injection mold, reaction force can be formed, the corners formed by the second side edge 12 and the third side edge 13 are contacted with the injection mold, reaction force can also be formed, a plurality of reaction forces do not act on the center of the cover body 10 at the same time, and the reaction force can be used for forming dispersion effect on injection molding internal stress, so that the injection molding internal stress is dispersed, and the shrinkage deformation of the rear cover during injection molding can be weakened.

Moreover, by using the injection molding rib 20 provided between the first side 11 and the second side 12, the compression-resistant contractive force of the cover 10 can be reinforced, thereby reducing the contractive deformation thereof.

It should be noted that the injection molding rib 20 should be disposed at least between one first side 11 and one second side 12. Of course, injection molding ribs 20 may be provided between each first side 11 and each second side 12.

As shown in fig. 1, the injection molding rib 20 includes a first inclined rib 21, and both ends of the first inclined rib 21 extend to the first side 11 and the second side 12, respectively. The first diagonal rib 21 is adopted to connect the stress corner formed by the third side edge 13 and the first side edge 11 and the stress corner formed by the second side edge 12 and the third side edge 13, so as to strengthen the transverse compression-resistant shrinkage force, further reduce the shrinkage deformation of the cover body 10 and ensure that the size of the cover body is within the tolerance range.

In the present embodiment, the extending direction of the first diagonal rib 21 is inclined with respect to the extending directions of the first side 11 and the second side 12 of the cover 10.

One first diagonal rib 21 may be disposed between the first side 11 and the second side 12, or a plurality of first diagonal ribs 21 may be disposed.

As shown in fig. 1, the injection molding rib 20 further includes a first reinforcing rib 22, a first third side 13 is disposed between the first end of the first side 11 and the first end of the second side 12, the second end of the first side 11 is connected with the second third side 13, the second end of the second side 12 is connected with the third side 13, the first end of the first reinforcing rib 22 is connected with the first diagonal rib 21, and the second end of the first reinforcing rib 22 is connected with the second third side 13 or the third side 13. The first reinforcing rib 22 can strengthen the connection strength between the first diagonal rib 21 and the first side 11 or the second side 12, and reduce the concentrated deformation of the cover 10 caused by the reaction force of the injection mold to the cover 10, thereby improving the dimensional accuracy of the rear cover.

As shown in fig. 1, the first reinforcing rib 22 includes a first section 221 and a second section 222, an included angle is formed between the first section 221 and the first diagonal rib 21, the second section 222 is parallel to the first diagonal rib 21, two ends of the first section 221 are respectively connected with the first diagonal rib 21 and the first end of the second section 222, and the second end of the second section 222 is connected with the third side 13. The first reinforcing rib 22 adopting the structure has the advantages of simple structure and convenience in molding.

As shown in fig. 1, the injection molding rib 20 further includes a second diagonal rib 23 parallel to the first diagonal rib 21, the second diagonal rib 23 being located between the first diagonal rib 21 and the first third side 13, and the injection molding rib 20 further includes a second reinforcing rib 24, the second reinforcing rib 24 being connected between the first diagonal rib 21 and the second diagonal rib 23. The second reinforcing rib 24 can strengthen the strength between the first diagonal rib 21 and the second diagonal rib 23 to weaken the concentrated deformation of the cover 10 caused by the reaction force of the injection mold to the cover 10, thereby improving the dimensional accuracy of the rear cover.

In the present embodiment, the first diagonal rib 21, the second diagonal rib 23, the first reinforcing rib 22, and the second reinforcing rib 24 together form a set of injection-molded ribs 20. Two sets of injection molding ribs 20 are arranged on the cover body 10 in an opposite mode, and each set of injection molding ribs 20 corresponds to one first side edge 11 and one second side edge 12.

The first diagonal rib 21, the second diagonal rib 23, the first reinforcing rib 22, and the second reinforcing rib 24 each protrude from the front side of the cover 10, and grooves are formed on the rear side of the cover 10.

As shown in fig. 1, the cover body 10 includes a cover plate 14 and a surrounding plate 15, wherein a plurality of first side edges 11, a plurality of second side edges 12 and a plurality of third side edges 13 together form an outer edge of the cover plate 14, the surrounding plate 15 is located at a front side of the cover body 10 and surrounds the outer edge of the cover body 10, and the injection molding rib 20 is disposed at the front side of the cover plate 14. The cover body 10 adopting the structure has the advantages of simple structure and convenient molding.

As shown in fig. 2 and 3, the cover 10 has indicator light holes 16 penetrating therethrough in the front-rear direction. With the indicator light hole 16, the display state of the indicator light can be observed to know the operating state of the LED display device.

As shown in fig. 2 and 3, the rear side of the cover body 10 has a plurality of ribs 17 arranged at intervals, the ribs 17 protrude from the rear surface of the cover body 10, and the indication lamp holes 16 penetrate through the side walls of the ribs 17. By adopting the structure, the hole opening of the indicator light hole 16 can be hidden by the convex rib 17, and the integrity of the product is improved under the requirement that the rear cover can transmit light to the indicator light.

In this embodiment, a plurality of indicator light holes 16 are provided on the same bead 17 at intervals along the extending direction of the bead 17, so that the observer can observe the light of the indicator light more easily.

Wherein, the ribs 17 are arranged to extend along the width direction of the cover body 10, and a plurality of ribs 17 jointly form an art-designing stripe.

Specifically, the decorative strip is stuck to the rear side of the cover body 10, so that the diversity of products can be enriched by utilizing the decorative strip, and the use experience of a user is improved.

In this embodiment, the ornamental strip adopts the mode of pasting to assemble to lid 10, can change different colours according to different demands, and assembly process is simple, promotes assembly efficiency, the swift change of being convenient for simultaneously.

Wherein, the front side of the cover body 10 is provided with a stop buckle 18 and a clamping buckle 19, the stop buckle 18 is matched with a stop groove of the box body in a stop way, and the clamping buckle 19 is matched with a clamping groove of the box body in a clamping way. The cover 10 is mounted in place to the case by means of a stop button 18 which cooperates with the case stop to provide a guiding and positioning action for the cover 10. The cover 10 can be fastened to the case using the snap-in fastener 19 so that the rear cover is mounted to the case. Meanwhile, the assembly structure of the stop buckle 18 and the clamping buckle 19 matched with the box body is adopted, and the assembly of the rear cover can be realized without using tools.

Specifically, the stop button 18 is a stop protrusion disposed on the second side 12 of the cover 10. The clamping buckle 19 is an elastic clamping column arranged on the cover body 10, the elastic clamping column comprises a connecting body and a plurality of clamping arms, the connecting body and the plurality of clamping arms are connected with each other, the clamping arms are arranged at intervals along the circumferential direction of the connecting body, the connecting body is arranged on the cover body 10, and the connecting strength of the clamping arms and the cover body 10 can be enhanced by the aid of the connecting body. The end part of each clamping arm is provided with a clamping block, and the clamping block is provided with a clamping inclined surface matched with the clamping groove in a clamping manner.

The elastic clamping column comprises two forms, wherein the first form is that the connecting body is arranged as a connecting ring, and the plurality of clamping arms are arranged on the connecting ring, so that the elastic clamping column has the advantage of being convenient to form. At this time, the elastic clamping column is in a cylindrical structure. The second is to set the connection body as a plurality of connection boards, the plurality of connection boards and the plurality of clamping arms are all arranged on the rear side of the cover body 10 in an array mode, and each clamping arm is connected with the side wall of the corresponding connection board. The connecting plate is arranged into a triangle plate structure.

In this embodiment, a handle groove is formed in the case, a handle groove corresponding to the handle groove is formed in the cover 10, and a handle rib matched with the hand stop of the operator is formed in the bottom of the handle groove. When the rear cover is detached, the handle bar is pressed close to the handle bar by the hand, so that the rear cover can be conveniently detached.

Still another embodiment of the present utility model provides an LED display device, where the LED display device includes a case, an LED module, and a rear cover, the LED module is disposed on a front side of the case, the rear cover is disposed on a rear side of the case, and the rear cover is the rear cover of the LED display device provided above. With the LED display device described above, when injection molding is performed, the corner formed by the third side edge 13 and the first side edge 11 is in contact with the injection mold, so that a reaction force can be formed, the corner formed by the second side edge 12 and the third side edge 13 is in contact with the injection mold, and also a reaction force can be formed, a plurality of reaction forces do not act on the center of the cover 10 at the same time, and the reaction force can be used to disperse the injection molding internal stress, so that the injection molding internal stress can be dispersed, and shrinkage deformation of the rear cover during injection molding can be reduced.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a back lid of LED display device, its characterized in that, back lid includes lid (10) and sets up lid (10) front side moulding plastics muscle (20), lid (10) have two parallel arrangement's first side (11), two parallel arrangement's second side (12) and a plurality of third side (13), two second side (12) all set up two between first side (11), first side (11) with be connected with one between second side (12) third side (13), and should third side (13) with corresponding first side (11) with second side (12) all are the angle setting, moulding plastics muscle (20) are located between first side (11) with second side (12).

2. Rear cover according to claim 1, characterized in that the injection moulding rib (20) comprises a first oblique rib (21), the two ends of the first oblique rib (21) extending to the first side (11) and the second side (12), respectively.

3. The back cover according to claim 2, wherein the injection molding rib (20) further comprises a first reinforcing rib (22), a first third side (13) is disposed between a first end of the first side (11) and a first end of the second side (12), a second end of the first side (11) is connected with a second of the third sides (13), a second end of the second side (12) is connected with a third of the third sides (13), a first end of the first reinforcing rib (22) is connected with the first diagonal rib (21), and a second end of the first reinforcing rib (22) is connected with a second of the third sides (13) or a third of the third sides (13).

4. A rear cover according to claim 3, characterized in that the first reinforcing rib (22) comprises a first section (221) and a second section (222), an included angle is formed between the first section (221) and the first inclined rib (21), the second section (222) is arranged in parallel with the first inclined rib (21), two ends of the first section (221) are respectively connected with the first inclined rib (21) and the first end of the second section (222), and the second end of the second section (222) is connected with the third side (13).

5. The back cover according to claim 2, wherein the injection moulding rib (20) further comprises a second diagonal rib (23) parallel to the first diagonal rib (21), the second diagonal rib (23) being located between the first diagonal rib (21) and the first one of the third side edges (13), the injection moulding rib (20) further comprising a second reinforcing rib (24), the second reinforcing rib (24) being connected between the first diagonal rib (21) and the second diagonal rib (23).

6. The back cover according to claim 1, wherein the cover body (10) comprises a cover plate (14) and a surrounding plate (15), a plurality of first side edges (11), a plurality of second side edges (12) and a plurality of third side edges (13) jointly enclose an outer edge of the cover plate (14), the surrounding plate (15) is located on the front side of the cover body (10) and encloses an outer edge of the cover body (10), and the injection molding ribs (20) are arranged on the front side of the cover plate (14).

7. Rear cover according to claim 1, characterized in that the cover body (10) has indicator light holes (16) arranged therethrough in front-rear direction.

8. Rear cover according to claim 7, characterized in that the rear side of the cover body (10) is provided with a plurality of ribs (17) arranged at intervals, the ribs (17) protrude out of the rear surface of the cover body (10), and the indicator light holes (16) penetrate through the side walls of the ribs (17).

9. The back cover of claim 1, wherein the back cover is configured to be attached to the back cover,

a decorative strip is stuck to the rear side of the cover body (10); and/or the number of the groups of groups,

the front side of the cover body (10) is provided with a stop buckle (18) and a clamping buckle (19), the stop buckle (18) is in stop fit with a stop groove of the box body, and the clamping buckle (19) is in clamping fit with the clamping groove of the box body.

10. An LED display device, comprising:

a case;

the LED module is arranged at the front side of the box body;

a rear cover provided at a rear side of the case, the rear cover being the rear cover of the LED display device according to any one of claims 1 to 9.