CN116137123B

CN116137123B - Protective device applied to curved surface flexible small-spacing LED display screen

Info

Publication number: CN116137123B
Application number: CN202310426513.8A
Authority: CN
Inventors: 卢伟; 尚聪敏
Original assignee: Shenzhen Lixiang Wenchuang Photoelectric Technology Co ltd
Current assignee: Shenzhen Lixiang Wenchuang Photoelectric Technology Co ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-06-16
Anticipated expiration: 2043-04-20
Also published as: CN116137123A

Abstract

The invention discloses a protective device applied to a curved surface flexible small-spacing LED display screen, which belongs to the technical field of LED display devices, wherein the display screen is formed by splicing a plurality of flexible modules, a conical splicing seam is formed between two adjacent flexible modules, a plurality of longitudinal through grooves are formed on the back side of each flexible module in parallel, the flexible modules can be extruded and deformed at the longitudinal through grooves, and the two adjacent longitudinal through grooves are communicated through a transverse through groove; when the two adjacent flexible modules are subjected to relative displacement, the two flexible modules can mechanically act on the extrusion pipe to deform the extrusion pipe, and the damping rigidity of the flexible damping pipe is changed by changing the flow direction of damping liquid after the extrusion pipe is deformed. When the device disclosed by the invention is used for extruding between two adjacent flexible modules, the flexible modules are buffered and protected, so that the possibility of damage to the panel caused by extrusion is reduced.

Description

Protective device applied to curved surface flexible small-spacing LED display screen

Technical Field

The invention belongs to the technical field of LED display devices, and particularly relates to a protective device applied to a curved-surface flexible small-spacing LED display screen.

Background

For an LED display screen, the smaller the pixel distance is, the higher the pixel density in a unit area is, the more the number of pixel points which can participate in the boundary surface change on the display screen is, when the display area is fixed, the higher the pixel density is, the higher the picture reduction degree of the display screen is, and the displayed picture is clear. If the display screen is to show finer pictures, the display screen needs to be made large to meet the number of whole screen pixels required by the high-definition pictures. For the curved surface LED display screen, the design and the manufacture are all that the spherical surface is decomposed into a plurality of basic display modules through strict mathematical calculation, and the basic display modules are spliced into a curved surface LED display screen. The existing curved surface flexible small-spacing LED display screen is extremely easy to be impacted by external force in the use process, and when the LED display screen is subjected to sudden bending stress, two adjacent flexible modules are easy to squeeze, so that the panel is damaged.

Disclosure of Invention

Therefore, the invention aims to provide the protection device applied to the curved surface flexible small-space LED display screen, which is used for buffering and protecting two adjacent flexible modules when the two adjacent flexible modules are extruded, so that the possibility of damage of a panel caused by extrusion is reduced.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the invention relates to a protective device applied to a curved surface flexible small-spacing LED display screen, the display screen is formed by splicing a plurality of flexible modules, a conical splicing seam is formed between two adjacent flexible modules, a plurality of longitudinal through grooves are formed on the back side of each flexible module in parallel, the flexible modules can be extruded and deformed at the longitudinal through grooves, the two adjacent longitudinal through grooves are communicated through transverse through grooves, a flexible damping tube is arranged in each longitudinal through groove, and flexible damping Guan Xianwei is arranged in an S-shaped channel formed by connecting the longitudinal through grooves with the transverse through grooves; an extrusion pipe is arranged in the splice joint in a limiting way, damping liquid is filled in the extrusion pipe, and the extrusion pipe is communicated with the flexible damping pipe; when the two adjacent flexible modules are subjected to relative displacement, the two adjacent flexible modules can mechanically act on the extrusion pipe to deform the extrusion pipe, and the damping rigidity of the flexible damping pipe is changed by changing the flow direction of damping liquid after the extrusion pipe is deformed.

Further, the back side of flexible module is separated by and is provided with the backplate, the window has been seted up on the extrusion pipe, the window is closed through the elastic film, is close to the window is provided with the arc clamp plate in the outside of extrusion pipe, staggers each other in the axial between the arc clamp plate of two adjacent flexible modules and arranges, the arc clamp plate is connected to flexible module through a connecting rod, the one end and the flexible module of connecting rod are articulated, the other end and arc clamp plate fixed connection, the middle part of connecting rod with the backplate is articulated.

Further, the outside cover of extrusion pipe is equipped with the sleeve pipe, the sleeve pipe is with arc clamp plate limit simultaneously in the inboard of window.

Further, the two ends of the extrusion pipe are sealed through the end heads, the end heads are in threaded connection with the extrusion pipe, and the length of the end heads penetrating into the extrusion pipe can be changed by rotating the end heads, so that damping fluid is compressed or released.

Further, an elastic reset device is arranged between the back plate and the flexible module.

Further, a yielding groove for yielding the connecting rod is formed in the back side of the flexible module.

Further, the flexible module comprises a display panel and a bottom plate assembly arranged on the back side of the display panel, and the longitudinal through groove and the transverse through groove are formed in the bottom plate assembly.

Further, the flexible damping tube is limited at the bottom of the longitudinal through groove through the limiting support, a root groove is formed in the root of the longitudinal through groove, and the flexible damping tube can extend into the root groove after being expanded.

The invention has the beneficial effects that:

according to the protective device applied to the curved surface flexible small-spacing LED display screen, the longitudinal through grooves are formed, the flexible module can be extruded and deformed at the longitudinal through grooves, the flexibility of the flexible module is improved, the flexible module can be better adapted to the change of external stress, and the generation of concentrated stress can be reduced through the deformation guiding effect at the longitudinal through grooves.

In the device, the flexible damping tube is arranged in the longitudinal through groove, the extrusion tube is arranged in the splicing seam in a limiting manner, and when two adjacent flexible modules are subjected to relative displacement, the extrusion tube can be mechanically acted to deform, for example, when the two flexible modules are reversely bent, damping liquid in the extrusion tube is extruded, the damping liquid in the extrusion tube enters the flexible damping tube at the back side of the flexible modules, so that the flexible damping tube expands, the damping rigidity of the flexible modules can be increased, and the flexible modules are not easy to be pressed and deformed. The flexible module can be effectively protected. When two flexible modules are bent towards the inner sides, the two flexible modules are displaced towards opposite directions, negative pressure can be generated on the inner sides of the extrusion pipes, damping liquid in the flexible damping pipes reversely enters the extrusion pipes, damping rigidity of the flexible modules can be reduced, a holding-down acting force of the back sides of the flexible modules to the panel is reduced, the flexible modules are easier to bend, the back sides are more suitable for buffering and deforming, and deformation of the panel on the front sides of the flexible modules due to overlarge internal force is avoided.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for description:

FIG. 1 is a schematic view of a protective device according to the present invention;

FIG. 2 is a top view of the protective device of the present invention;

FIG. 3 is a schematic view of the arrangement of longitudinal through slots;

FIG. 4 is a schematic structural view of a flexible damper tube;

FIG. 5 is a cross-sectional view of an extruded tube;

FIG. 6 is an enlarged view of FIG. 4 at A;

fig. 7 is a schematic structural view of the limiting bracket.

The figures are marked as follows: the flexible module 1, the splice joint 2, the longitudinal through groove 3, the flexible damping tube 4, the extrusion tube 5, the back plate 6, the window 7, the elastic film 8, the arc-shaped pressing plate 9, the connecting rod 10, the sleeve 11, the end 12, the elastic reset device 13, the abdication groove 14, the display panel 15, the bottom plate assembly 16, the limit bracket 17 and the root groove 18.

Detailed Description

As shown in fig. 1-7, the display screen is formed by splicing a plurality of flexible modules 1, the spliced shape is arranged in a curved shape according to the requirement, the inner sides of the flexible modules 1 can be smoothly transited, and thus, a conical splicing seam 2 is formed between two adjacent flexible modules 1 on the back side at intervals so as to adapt to the bending towards the inner side or the outer side of the display screen.

Specifically, the back side of the flexible module 1 is formed with a plurality of longitudinal through grooves 3 in parallel, and because the longitudinal channels form the abdicating openings for the back side of the flexible module 1, when the flexible module 1 is bent, the flexible module 1 can be extruded and deformed at the longitudinal through grooves 3, so that the damage problem caused by the mutual extrusion of the back side materials can be avoided.

Meanwhile, two adjacent longitudinal through grooves 3 are communicated through a transverse through groove, and the transverse direction is the direction perpendicular to the extending direction of the longitudinal through grooves 3, wherein the longitudinal through grooves 3 and the transverse channels are internally provided with integral flexible damping pipes 4, so that the flexible damping pipes 4 are limited and arranged in an S-shaped channel formed by connecting the longitudinal through grooves 3 and the transverse through grooves; the extrusion pipe 5 is arranged in the splice joint 2 in a limiting manner, the extrusion pipe 5 is arranged along the longitudinal direction of the flexible template, damping liquid is filled in the extrusion pipe 5, and the extrusion pipe 5 is communicated with the flexible damping pipe 4; when the adjacent two flexible modules 1 are relatively displaced, the extrusion tube 5 can be mechanically acted on to deform.

The deformation condition of the extrusion tube 5 comprises stretching deformation and extrusion deformation, when two flexible modules 1 are reversely bent, namely, are bent towards the outer side of the display screen, damping liquid in the extrusion tube 5 is extruded to generate extrusion deformation, the damping liquid in the extrusion tube enters the flexible damping tube 4 at the back side of the flexible modules 1, and the flexible damping tube 4 is expanded, so that the damping rigidity of the flexible modules 1 can be increased, and the flexible modules are not easy to be pressed and deformed. On the contrary, when two flexible module 1 are inwards buckled, both are towards opposite direction displacement, extrusion pipe 5 receives the extension, can produce the negative pressure to the inboard of extrusion pipe 5, produce tensile deformation, damping liquid in the flexible damping pipe 4 backward gets into in the extrusion pipe 5, can reduce the damping rigidity of flexible module 1, reduce the back side of flexible module 1 and to a restriction effort of panel, let flexible module 1 be buckled more easily, let the back side more adapt to and cushion and warp, avoided the internal force too big panel deformation that leads to flexible module 1 front side.

In this embodiment, the back side of the flexible module 1 is provided with the back plate 6 at intervals, the area of the back plate 6 is basically the same as that of the flexible module 1, the distance between the back plate and the flexible module 1 is within 20mm, the extrusion tube 5 is provided with the window 7, the window 7 is closed by the elastic film 8, the elastic film 8 is detachably connected with the tube wall of the extrusion tube 5 by a screw, and the edge is sealed in a compound manner. Near window 7 is provided with arc clamp plate 9 in the outside of extruded tube 5, arc clamp plate 9 and elastic membrane 8 fixed connection, and the area of arc clamp plate 9 is equivalent with window 7, and the edge rounding avoids damaging elastic membrane 8, staggers each other in the axial between the arc clamp plate 9 of two adjacent flexible modules 1, can extrude the flexible film simultaneously, can also avoid mutual interference when acting together. The arc-shaped pressing plate 9 is connected to the flexible module 1 through a connecting rod 10, one end of the connecting rod 10 is hinged to the flexible module 1, the other end of the connecting rod 10 is fixedly connected with the arc-shaped pressing plate 9, the middle of the connecting rod 10 is hinged to the back plate 6, and when one flexible module 1 rotates relative to the other flexible module 1, the connecting rod 10 can drive the arc-shaped pressing plate 9 to act, so that the flexible film can be extruded or stretched. Of course, the initial position of the arc-shaped pressing plate 9 does not necessarily have to correspond to the wall of the extruded tube 5, and the initial position may be set as needed inside the extruded tube 5.

In this embodiment, the outside of the extruded tube 5 is sleeved with a sleeve 11, and the sleeve 11 limits the arc-shaped pressing plate 9 at the inner side of the window 7 at the same time, so as to limit the excessive displacement of the arc-shaped pressing plate 9 and prevent the arc-shaped pressing plate 9 from deviating from the window 7 to cause the damage of the device.

In this embodiment, two ends of the extrusion tube 5 are sealed by the end head 12, the end head 12 is in threaded connection with the extrusion tube 5, and the length of the end head 12 penetrating into the extrusion tube 5 can be changed by rotating the end head 12 so as to compress or release damping fluid.

In this embodiment, an elastic reset device 13 is disposed between the back plate 6 and the flexible module 1, so that the position between the back plate 6 and the flexible module 1 can be determined, and a restoring force is provided. Meanwhile, the back side of the flexible module 1 is provided with a yielding groove 14 for yielding the connecting rod 10, so that interference between the connecting rod 10 and the flexible module 1 is avoided when the connecting rod 10 moves. Wherein, flexible module 1 includes display panel 15, installs the bottom plate subassembly 16 at display panel 15 dorsal, and vertical logical groove 3 and horizontal logical groove are seted up on bottom plate subassembly 16, through additionally setting up bottom plate subassembly 16 for hold devices such as circuit board, can make the device standardized, more convenient maintenance and change.

In this embodiment, the flexible damping tube 4 is limited at the bottom of the longitudinal through groove 3 through the limiting support 17, the cross section of the limiting support 17 is concave, the flexible damping tube is fixedly installed in the longitudinal through groove 3 under the action of self elastic stress, the root groove 18 is formed in the root of the longitudinal through groove 3, the root groove 18 extends transversely towards the flexible module 1, the flexible damping tube 4 can extend into the root groove 18 after expanding, the root groove 18 of the flexible module 1 is full of the flexible damping tube, and the integral rigidity is improved, so that the flexible damping tube is more difficult to deform.

Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a protector for flexible closely spaced LED display screen of curved surface, the display screen is spliced by a plurality of flexible modules and forms the conical seam between two adjacent flexible modules, its characterized in that, the back side of flexible module is formed with a plurality of vertical logical grooves side by side, flexible module can be in vertical logical groove department extrusion deformation, communicates through horizontal logical groove between two adjacent vertical logical grooves, install flexible damping pipe in the vertical logical groove, flexible damping Guan Xianwei installs in the S-shaped passageway that is formed by connecting vertical logical groove and horizontal logical groove; an extrusion pipe is arranged in the splice joint in a limiting way, damping liquid is filled in the extrusion pipe, and the extrusion pipe is communicated with the flexible damping pipe; when the two adjacent flexible modules are subjected to relative displacement, the two adjacent flexible modules can mechanically act on the extrusion pipe to deform the extrusion pipe, and the damping rigidity of the flexible damping pipe is changed by changing the flow direction of damping liquid after the extrusion pipe is deformed.

2. The protective device for the curved surface flexible small-spacing LED display screen, according to claim 1, wherein a back plate is arranged on the back side of the flexible module at intervals, a window is formed in the extrusion tube and is closed by an elastic film, an arc-shaped pressing plate is arranged on the outer side of the extrusion tube adjacent to the window, the arc-shaped pressing plates of two adjacent flexible modules are arranged in an axial staggered mode, the arc-shaped pressing plates are connected to the flexible module by a connecting rod, one end of the connecting rod is hinged to the flexible module, the other end of the connecting rod is fixedly connected with the arc-shaped pressing plate, and the middle part of the connecting rod is hinged to the back plate.

3. The protective device for the curved flexible small-pitch LED display screen according to claim 2, wherein a sleeve is sleeved on the outer side of the extrusion tube, and the sleeve limits the arc-shaped pressing plate on the inner side of the window.

4. The protective device for the curved flexible small-pitch LED display screen according to claim 3, wherein two ends of the extrusion tube are sealed through end heads, the end heads are in threaded connection with the extrusion tube, and the length of the end heads penetrating into the extrusion tube can be changed by rotating the end heads, so that damping liquid is compressed or released.

5. The protective device applied to the curved flexible small-pitch LED display screen according to claim 2, wherein an elastic reset device is arranged between the back plate and the flexible module.

6. The protective device applied to the curved surface flexible small-space LED display screen according to claim 2, wherein a yielding groove for yielding the connecting rod is formed in the back side of the flexible module.

7. The protective device for a curved flexible small-pitch LED display screen according to any one of claims 1-6, wherein said flexible module comprises a display panel, a bottom plate assembly mounted on the back side of said display panel, and said longitudinal through grooves and transverse through grooves are formed in said bottom plate assembly.

8. The protective device applied to the curved flexible small-spacing LED display screen according to claim 7, wherein the flexible damping tube is limited at the bottom of the longitudinal through groove through the limiting support, a root groove is formed in the root of the longitudinal through groove, and the flexible damping tube can extend into the root groove after being expanded.