CN111341216A

CN111341216A - Press unlocking type LED display screen unit board

Info

Publication number: CN111341216A
Application number: CN201811554584.1A
Authority: CN
Inventors: 林广双
Original assignee: Guangzhou Gaobolin Electronics Co ltd
Current assignee: Guangzhou Gaobolin Electronics Co ltd
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2020-06-26

Abstract

The invention discloses a press unlocking type LED display screen unit plate which comprises a display module and a back frame, wherein the back frame is fixed on the back side of the display module, a plurality of clamping sleeves and a plurality of clamping columns which are matched with the clamping sleeves and used for being fixed on an installation position are arranged on the back frame, and when the clamping sleeves are sleeved on the clamping columns and pressed, the clamping columns and the clamping sleeves are locked; or the clamping column and the clamping sleeve are unlocked after being pressed again; the press unlocking type LED display screen unit plate has the advantages of reasonable structure, convenience in maintenance and capability of reducing maintenance workload.

Description

Press unlocking type LED display screen unit board

Technical Field

The invention belongs to the technical field of LED display equipment, and particularly relates to a press unlocking type LED display screen unit plate.

Background

A light Emitting diode (led), which is a solid semiconductor device capable of converting electrical energy into visible light, can directly convert electricity into light. The core of the LED is a semiconductor wafer, one end of the wafer is attached to a support, the other end of the wafer is a negative electrode, the other end of the wafer is connected with a positive electrode of a power supply, and the whole wafer is packaged by epoxy resin. The semiconductor wafer is composed of two parts, one of which is a P-type semiconductor in which holes predominate and the other of which is an N-type semiconductor in which electrons predominate. When the two semiconductors are connected, a P-N junction is formed between them. When current is applied to the wafer through the wire, electrons are pushed to the P region where they recombine with holes and then emit energy in the form of photons, which is the principle of LED lamp illumination. The wavelength of the light, i.e., the color of the light, is determined by the material forming the P-N junction.

The LED display device can be formed by utilizing the LED light-emitting principle and packaging a plurality of LED light-emitting diodes on a PCB (printed circuit board) in a lattice form. The LED display screen has the characteristics of high brightness, wide visual angle, long service life and convenience in manufacturing; therefore, the ultra-large screen display screens widely used outdoors and indoors are basically of the type of the LED display screens. The LED display screen is formed by assembling and fixing a plurality of LED display unit boards on an installation position, and the existing connection mode of pressing and unlocking LED display screen unit boards and the installation position mainly comprises a bolt connection mode and a magnetic attraction connection mode. The unit board in the magnetic connection mode is convenient to mount, maintain and dismount, so that the LED display screen base mounted indoors is the pressing unlocking type LED display screen unit board in the magnetic connection mode; in the outdoor display screen, especially in the occasion of personnel movement, the installation mode of pressing the unlocking type LED display screen unit plate is usually a bolt fixing mode in consideration of safety factors, and the unit plate adopting the magnetic connection mode is likely to peel off and fall off from the installation position due to negative pressure formed by leeward to cause safety accidents. And the unit plates fixed by the bolts bring great inconvenience to the maintenance and repair of the display screen. When the LED display screen is used, the LED diode is damaged and can not emit light, so that a dark area, namely a 'dead spot', appears on the LED display screen, and at the moment, the LED display screen unit plate with problems needs to be detached for replacement or corresponding maintenance treatment; the display unit plate fixed by the bolts can be detached only from the back of the display screen, and particularly, the LED display screen with an overlarge display area is difficult and troublesome to accurately locate to the failed display unit from the back of the LED display screen; the display screen fixed by the magnetic attraction can stand in front of the display screen, directly find the unit board which can not normally display, apply a force larger than the adsorption force of the magnet to the unit board, and pull the unit board away, namely, the disassembly of the LED display screen unit board is completed. Therefore, the LED display screen unit plate adopting the existing bolt connection mode brings certain inconvenience to the maintenance and repair of workers when in use; and simultaneously, the workload of workers is increased.

Disclosure of Invention

In view of this, the invention aims to provide a press unlocking type LED display screen unit plate which is reasonable in structure, convenient to maintain and capable of reducing workload.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

a pressing unlocking type LED display screen unit plate comprises a display module and a back frame, wherein the back frame is fixed on the reverse side of the display module, a plurality of clamping sleeves and a plurality of clamping columns which are matched with the clamping sleeves and used for being fixed on an installation position are arranged on the back frame, and when the clamping sleeves are sleeved on the clamping columns and pressed, the clamping columns and the clamping sleeves are locked; or the clamping column and the clamping sleeve are unlocked after being pressed again.

Preferably, an open cavity is formed in the clamping column along the axial direction of the clamping column, a sliding block, a lock catch and a through hole are arranged in the cavity, the sliding block slides in the cavity, the lock catch is opposite to the sliding block and is rotatably connected with the clamping column, the through hole is formed in the side wall of the clamping column, and the end portion of the lock catch can extend out of the through hole.

Preferably, the slider is arranged in a polygonal shape along the length direction of the slider, and the polygonal shape is matched with the cavity.

Preferably, the end part of the sliding block opposite to the lock catch is arranged in an inclined plane, the other end of the sliding block is further provided with a push rod, one end of the push rod is fixedly connected with the sliding block, the other end of the push rod extends out of the cavity, and a reset spring is further arranged between the push rod and the clamping column.

Preferably, one side of the sliding block is further provided with a sliding groove and a clamping hook matched with the sliding groove, the sliding groove is arranged in a Y shape, the clamping hook is arranged in a Z shape, one end of the clamping hook is rotatably connected with the clamping column, the other end of the clamping hook is slidably connected with the sliding groove, a reed is further arranged in the cavity and fixedly connected with the clamping column, and the reed presses the other end of the clamping hook to the sliding groove.

Preferably, the middle part in the spout is provided with the stopper, the stopper is the V-arrangement generally, and stopper and slider integrated into one piece, the opening part of stopper still is provided with the piece that deflects, the piece that deflects is the V-arrangement generally, and the piece that deflects and slider integrated into one piece.

Preferably, a first ramp, a second ramp and a third ramp which are gradually increased in height are further sequentially arranged in the chute, the groove of the first ramp is higher than the bottom of the second ramp, the groove of the second ramp is higher than the bottom of the third ramp, and the groove of the third ramp is higher than the bottom of the first ramp.

Preferably, the hasp includes connecting rod, kink and extension spring, the one end and the spliced pole of connecting rod rotate to be connected, the other end and kink fixed connection, the kink is the inclined plane setting with the last unanimity of slider, the one end and the joint column junction of extension spring, the other end is connected with the connecting rod.

Preferably, the inner wall of the clamping sleeve, which is far away from the display module, is annularly provided with a groove.

Preferably, the display module comprises LED light-emitting diodes and a PCB circuit board, and the LED light-emitting diodes are uniformly arranged on the PCB circuit board.

The embodiment of the invention has the beneficial effects that: because the clamping sleeve and the clamping column which is fixed on the installation position and is matched with the clamping sleeve are arranged on the back frame of the LED display screen unit plate, when the clamping sleeve on the LED display unit plate is sleeved on the clamping column and pressed down, the clamping column can lock the display screen unit plate, or the clamping column unlocks the display unit plate after the clamping column is pressed down; therefore, the problem that the display screen unit plate can be detached only by winding behind the display screen when the display screen unit plate is detached in the traditional mode is solved. Therefore, the convenience of the pressing unlocking type LED display screen unit plate in replacement or maintenance is effectively improved; meanwhile, the workload of workers in maintenance or repair is effectively reduced.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

FIG. 1 is a front view of a press-to-unlock LED display screen unit panel in accordance with the present invention;

FIG. 2 is a back view of a press-to-unlock LED display screen cell plate in accordance with the present invention;

FIG. 3 is a schematic side cross-sectional view of a press-to-unlock LED display screen unit panel according to the present invention;

FIG. 4 is an enlarged view of a snap post of a press unlock LED display screen unit panel according to the present invention;

FIG. 5 is a state of the press unlocking type LED display screen unit plate locked in the clamping sleeve;

FIG. 6 is a schematic view of a sliding groove structure on a sliding block of a unit plate of a press unlocking type LED display screen in the invention;

fig. 7 is a diagram illustrating the position of the hook when the unit plate of the press unlocking type LED display screen is in the locking state.

Detailed Description

The present invention will be described in further detail with reference to the drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the illustrated embodiments are not intended to limit the present invention, and in the present embodiments, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention; in addition, in the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a bolt fixing manner, a welding fixing manner, a pin fixing manner, or the like, which is commonly used in the prior art, and therefore, detailed description thereof is omitted in this embodiment.

As shown in fig. 1 to 5, the embodiment provides a press unlocking type LED display screen unit panel, which includes a display module 1 and a back frame 2, wherein the back frame 2 is fixed on a back side of the display module 1 by bolts, the back frame 2 is provided with a plurality of clamping sleeves 3, and a plurality of clamping columns 4 which are matched with the clamping sleeves 3 and used for being fixed on a mounting position, the clamping sleeves 3 are fixed on the back frame 2 by injection molding or bolt fixing, and when the clamping sleeves 3 are sleeved on the clamping columns 4 and pressed, the clamping columns 4 and the clamping sleeves 3 are locked; or the clamping column 4 and the clamping sleeve 3 are unlocked after being pressed again.

As shown in fig. 2-5, in the preferred embodiment, an open cavity 41 is formed in the clamping column 4 along the axial direction thereof, and a sliding block 42, a locking buckle 43 and a through hole 44 are formed in the cavity 41; wherein, slider 42 can be in the reciprocating sliding of going in cavity 41, and hasp 43 is relative with slider 42's tip, and hasp 43 forms to rotate through the round pin axle with joint post 4 and is connected, and through-hole 44 is seted up on the lateral wall of joint post 4, and the tip of hasp 43 can be followed and is stretched out in through-hole 44. The inner wall of the clamping sleeve 3 far away from the end part of the display module 1 is annularly provided with a groove 31. When the end of the lock catch 43 extends out of the through hole 44, the lock catch can be clamped into the groove 31, so that the clamping column 4 and the clamping sleeve 3 are locked, namely, the display screen unit board is fixed on the installation position.

As shown in fig. 2-5, in a preferred embodiment, the sliding block 42 is disposed in a polygonal shape along the length direction thereof, the sliding block 42 is disposed in a polygonal column shape, and the sliding block 42 is prevented from rotating in the chamber 41, so that the locking or unlocking of the locking column can be performed, the sliding block 42 in this embodiment is a quadrilateral, but the sliding block 42 may also be disposed in a triangular column shape.

In the preferred embodiment, the end of the slider 42 opposite to the latch 43 is disposed in an inclined plane, the other end is further provided with a push rod 45, one end of the push rod 45 is integrally formed with the slider 42, the other end extends out of the cavity 41, and a return spring 46 is further disposed between the push rod 45 and the clamping column 4. The lock catch 43 comprises a connecting rod 47, a bending part 48 and a tension spring 49, one end of the connecting rod 47 is rotatably connected with the connecting column, the other end of the connecting rod 47 is integrally formed with the bending part 48, the bending part 48 is an inclined plane which is consistent with that of the sliding block 42, one end of the tension spring 49 is connected with the clamping column 4, and the other end of the tension spring is connected with the connecting rod 47. When the inclined surface of the slider 42 moves to the bent portion 48 of the latch 43, the bent portion 48 follows the inclined surface of the slider 42, so that the bent portion 48 protrudes out of the through hole 44 and is caught in the groove 31.

As shown in fig. 6-7, in the preferred embodiment, a sliding slot 5 and a hook 6 cooperating with the sliding slot 5 are further provided on one side of the sliding block 42, the sliding slot 5 is substantially Y-shaped, the hook 6 is Z-shaped, one end of the hook 6 is rotatably connected to the latching post 4, the other end of the hook 6 is located on the sliding slot 5 and slides along the sliding slot 5, a spring 7 is further provided in the chamber 41, the spring 7 is fixed to the latching post 4 by welding or bolts, and the spring 7 presses the other end of the hook 6 into the sliding slot 5 to prevent the end of the hook 6 from slipping out of the sliding slot 5.

As shown in fig. 6-7, in a preferred embodiment, a limit block 51 is disposed at a middle portion of the sliding slot 5, the limit block 51 is substantially V-shaped, the limit block 51 is integrally formed with the sliding block 42, a deflection block 52 is further disposed at an opening of the limit block 51, the deflection block 52 is substantially V-shaped, and the deflection block 52 is integrally formed with the sliding block 42. The chute 5 is also provided with a first ramp 53, a second ramp 54 and a third ramp 55 which are gradually increased, wherein the groove of the first ramp 53 is higher than the bottom of the second ramp 54, the groove of the second ramp 54 is higher than the bottom of the third ramp 55, and the groove of the third ramp 55 is higher than the bottom of the first ramp 53.

As shown in fig. 1, in the preferred embodiment, the display module 1 includes a plurality of LED light emitting diodes 11 and a PCB 12, and the LED light emitting diodes 11 are uniformly arranged and electrically connected on the PCB 12. Each LED 11 is equivalent to a display pixel, and a plurality of LEDs 11 can form a corresponding pattern when turned on as required.

The working principle is as follows:

when the clamping device is used, the clamping column is fixed on the installation position, then the clamping seat on the display screen unit board is aligned to the end part of the clamping column and sleeved with the clamping column, and then a force larger than the reset spring is continuously applied to press the display unit board to the clamping column. At the moment, the clamping column drives the sliding block fixed with the clamping column to move to the lock catch, and the end part of the sliding block is arranged in an inclined plane, so that the bending part of the lock catch moves along the inclined plane when the sliding block abuts against the lock catch, and the bending part is pressed to the through hole and extends out of the through hole and is clamped in the groove in the clamping sleeve; meanwhile, when the sliding block moves, the clamping hook can slide along the groove, and because the slope bottom of the first slope is lower than the groove of the third slope, the end part of the clamping hook can move in the sliding groove along the direction of the first slope when moving initially, and when the end part of the clamping hook moves to the second slope along the sliding groove, the end part of the clamping hook can fall on the slope bottom of the second slope under the elastic force of the reed and reach the top point position, at the moment, the force exerted on the display unit board is released, the reset spring drives the sliding block to reset, and when the reset is carried out, the end part of the clamping hook falls on the slope bottom of the second slope, the clamping hook is forced to move along the concave part of the limiting block, as shown in fig. 6, and the end part of the clamping hook is clamped in the concave part of the limiting block and keeps a clamping state, so that the display unit board. When the clamping column needs to be unlocked, a force larger than the reset spring is applied to the unit plate again to press the unit plate down, at the moment, the end part of the hook is already fallen into the third ramp, so the hook cannot move back at the moment and can only move to the other side of the deflection block along the deflection block and reach the vertex position, then the unit plate is loosened, the sliding block is reset under the action force of the reset spring, the end part of the hook slides along the third ramp until the sliding block is reset, and at the moment, the end part of the hook falls into the first ramp again; at this moment, the slide block loses the limitation on the lock catch, the lock catch resets the lock catch under the acting force of the tension spring, namely, the bending part of the lock catch is separated from the groove in the clamping sleeve and retracts into the clamping column, and therefore the clamping sleeve is unlocked from the clamping column.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a press unlocking type LED display screen cell board, includes display module assembly and back of the body frame, the back of the body frame is fixed at the reverse side of display module assembly, its characterized in that: the back frame is provided with a plurality of clamping sleeves and a plurality of clamping columns which are matched with the clamping sleeves and used for being fixed on the installation position, and when the clamping sleeves are sleeved on the clamping columns and pressed, the clamping columns and the clamping sleeves are locked; or the clamping column and the clamping sleeve are unlocked after being pressed again.

2. The press-to-unlock LED display screen cell plate of claim 1, wherein: be provided with an open-ended cavity along its axial in the joint post, be provided with slider, hasp and through-hole in the cavity, the slider slides in the cavity, the hasp is relative with the slider, and the hasp rotates with the joint post to be connected, the through-hole is seted up on the lateral wall of joint post, the tip of hasp can be followed and is stretched out in the through-hole.

3. The press-to-unlock LED display screen cell plate of claim 2, wherein: the slider is along its length direction be the polygon setting of mutually supporting with the cavity.

4. The press-to-unlock LED display screen cell plate of claim 2, wherein: the end part of the sliding block opposite to the lock catch is arranged in an inclined plane, the other end of the sliding block is further provided with an ejector rod, one end of the ejector rod is fixedly connected with the sliding block, the other end of the ejector rod extends out of the cavity, and a reset spring is further arranged between the ejector rod and the clamping column.

5. The press-to-unlock LED display screen cell plate of claim 3, wherein: one side of the sliding block is also provided with a sliding groove and a clamping hook matched with the sliding groove, the sliding groove is arranged in a Y shape, the clamping hook is arranged in a Z shape, one end of the clamping hook is rotatably connected with the clamping column, the other end of the clamping hook is in sliding connection with the sliding groove, a reed is further arranged in the cavity and fixedly connected with the clamping column, and the reed presses the other end of the clamping hook to the sliding groove.

6. The press-to-unlock LED display screen cell plate of claim 5, wherein: the middle part in the spout is provided with the stopper, the stopper is the V-arrangement generally, and stopper and slider integrated into one piece, the opening part of stopper still is provided with the piece that deflects, the piece that deflects is the V-arrangement generally, and the piece that deflects and slider integrated into one piece.

7. The press-to-unlock LED display screen cell plate of claim 6, wherein: the chute is also sequentially provided with a first ramp, a second ramp and a third ramp which are gradually increased, the groove of the first ramp is higher than the slope bottom of the second ramp, the groove of the second ramp is higher than the slope bottom of the third ramp, and the groove of the third ramp is higher than the slope bottom of the first ramp.

8. The press-to-unlock LED display screen cell plate of claim 2, wherein: the hasp includes connecting rod, kink and extension spring, the one end and the spliced pole of connecting rod rotate to be connected, the other end and kink fixed connection, the kink is the inclined plane setting unanimous on with the slider, the one end and the joint column connection of extension spring, the other end is connected with the connecting rod.

9. The press-to-unlock LED display screen cell plate of claim 1, wherein: the inner wall of the clamping sleeve, which is far away from the display module, is provided with a groove in a ring mode.

10. The press-to-unlock LED display screen cell plate of claim 1, wherein: the display module comprises LED light-emitting diodes and a PCB circuit board, wherein the LED light-emitting diodes are uniformly arranged on the PCB circuit board.