CN111308789B

CN111308789B - LED backlight protection device convenient to dismouting

Info

Publication number: CN111308789B
Application number: CN202010335926.1A
Authority: CN
Inventors: 翟久香
Original assignee: Quanzhou Taishang Investment Zone Xinkeli New Material Co ltd
Current assignee: DONGGUAN EKINGLUX OPTOELECTRONICS TECHNOLOGY CO LTD
Priority date: 2020-04-25
Filing date: 2020-04-25
Publication date: 2020-11-17
Anticipated expiration: 2040-04-25
Also published as: CN111308789A

Abstract

The invention discloses an LED backlight source protection device convenient to disassemble and assemble, which comprises a frame, a movable cavity and a cavity, wherein the movable cavity and the cavity are arranged in the frame and are provided with forward openings, a movable device is arranged in the movable cavity, a power cavity is arranged in the frame, a power device is arranged in the power cavity, the frame is provided with a control cavity, the control cavity is provided with a control device, the device has simple mechanism and convenient use, the device ensures that workers can install the backlight more simply and efficiently, improves the protection of the backlight component, and the movable plate is movably arranged to place the LED light source, thereby solving the problems that the LED light source is easy to fall off and damaged because the LED light source is manually stuck when the LED light source is placed in the traditional way, meanwhile, the automatic installation and disassembly of the optical diaphragm are realized through mechanical transmission control, the optical diaphragm is prevented from being scratched during manual operation, meanwhile, the problem that the LED lamp source is difficult to radiate is solved through the arranged radiating plate and the fan.

Description

LED backlight protection device convenient to dismouting

Technical Field

The invention relates to the technical field of LED backlight sources, in particular to an LED backlight source protection device convenient to disassemble and assemble.

Background

The backlight source is a light source located at the back of the liquid crystal display, and the light emitting effect of the backlight source directly influences the visual effect of the liquid crystal display module. The backlight structures can be divided into direct type backlight structures and side type backlight structures according to different incident modes of the light sources. The side-in backlight structure is characterized in that backlight LED lamp strips are arranged at the edge of a back plate at the rear side of a liquid crystal panel, light rays emitted by the LED lamp strips enter a light guide plate from a light incident surface at one side of the light guide plate, are emitted from a light emitting surface of the light guide plate after being reflected and diffused, and then pass through an optical film group to form a surface light source to be provided for the liquid crystal panel. However, in the application of the existing LED backlight, the backlight components (i.e. the LED light source, the light guide plate, and the optical film) are often placed in the electrical appliance, and the LED light source is adhered to the electrical appliance, which brings about the problem that the LED light source falls off after a long time use or when the external vibration occurs, which affects the use of the liquid crystal display.

Disclosure of Invention

The invention aims to provide an LED backlight source protection device convenient to disassemble and assemble, which is used for overcoming the defects in the prior art.

The invention relates to an LED backlight source protection device convenient to disassemble and assemble, which comprises a rack, a movable cavity and a cavity, wherein the movable cavity and the cavity are arranged in the rack, the opening of the movable cavity is forward, the movable cavity is communicated with the cavity, a movable device is arranged in the movable cavity, a power cavity is arranged in the rack, a power device is arranged in the power cavity, a control cavity is arranged in the rack, a control device is arranged in the control cavity, the control device comprises a support rod fixedly arranged on the rear wall of the control cavity, a rotating plate extending leftwards and rightwards is rotatably arranged on the support rod, a clearance groove is arranged in the rotating plate, a first magnet is fixedly arranged at the right end of the rotating plate, the rotating plate is connected with the rear wall of the control cavity through a first spring, a first sliding groove is arranged on the left wall of the control cavity, a threaded shaft extending leftwards is rotatably arranged on the inner wall of the right side of the, the screw shaft is in threaded connection with a threaded plate, a second magnet is fixedly arranged on the threaded plate, the threaded plate is connected with a moving device, and the rotating plate is connected with a pressing device.

On the basis of the technical scheme, the movable device comprises a light guide plate fixedly arranged on the left wall of the movable cavity, the upper wall and the lower wall of the movable cavity are symmetrically provided with second sliding grooves, the second sliding grooves are internally provided with first sliding blocks in bilateral symmetry in a sliding mode, the first sliding blocks are connected with the inner walls of the second sliding grooves through second springs, the upper wall and the lower wall of the movable cavity are symmetrically provided with third sliding grooves, the third sliding grooves are internally provided with second sliding blocks in a sliding mode, the second sliding blocks are connected with the inner walls of the third sliding grooves through third springs, the end faces of the first sliding blocks and the second sliding blocks are inclined planes, the movable cavity is internally provided with a movable plate, the movable cavity is internally provided with a movable cavity, the inner wall of the movable cavity is provided with soft cotton, and the rear wall of the movable cavity is provided with a.

On the basis of the technical scheme, the power device comprises a motor fixedly arranged on the left wall of the power cavity, the right end of the motor is connected with a first worm, the right end of the first worm is connected with a rotating block, a clearance groove is formed in the rotating block, fourth sliding grooves are symmetrically formed in the rotating block in the vertical direction, a third sliding block is arranged in each fourth sliding groove, an electromagnet is arranged in each fourth sliding groove, the third sliding block is connected with the electromagnet through a fourth spring, the threaded shaft is located in the clearance groove, a second worm is rotatably arranged on the upper wall of the power cavity and is provided with a first worm wheel meshed with the first worm, air outlet grooves with backward openings are symmetrically formed in the rear wall of the power cavity in the vertical direction, through holes communicated with the power cavity are formed in the inner wall of the front side of the air outlet grooves, and rotating shafts are arranged on the front walls of the air outlet grooves, and a second worm wheel meshed with the second worm is fixedly arranged on the rotating shaft, and the rotating shaft is connected with a fan.

On the basis of the technical scheme, the moving device comprises fifth sliding grooves which are arranged on the upper wall and the lower wall of the rack in an up-and-down symmetrical mode, the fifth sliding grooves are communicated with the upper wall and the lower wall of the rack through sixth sliding grooves, sliding rods are arranged in the fifth sliding grooves in a sliding mode, third magnets are arranged on the front side end faces of the ends of the sliding rods, rotating connecting rods are arranged on the sliding rods in a rotating mode, fourth magnets are arranged in the rotating connecting rods, and threaded plates stretch into the sixth sliding grooves and are fixedly connected with the sliding rods.

On the basis of the technical scheme, the pressing device comprises a seventh sliding groove which is arranged on the left wall of the rack and has a forward opening, the seventh sliding groove is communicated with the power cavity through an eighth sliding groove, a sliding plate is arranged in the seventh sliding groove in a sliding mode, the sliding plate is connected with the inner wall of the seventh sliding groove through a connecting spring, a through groove is formed in the sliding plate, and the rotating plate extends into the eighth sliding groove and is rotatably connected with the sliding plate.

The invention has the beneficial effects that: this device mechanism is simple, and is simple and convenient to use, make the workman when the installation backlight through the frame that sets up, simple high efficiency more, the protection to the backlight subassembly has been improved, and place the LED lamp source through the fly leaf that removes the setting, it glues to have solved the tradition artifical when placing the LED lamp source, lead to the LED lamp source easily to drop, the problem of damage, simultaneously, realize the automatic installation and the dismantlement to optical diaphragm through mechanical transmission control, scrape colored optical diaphragm when having avoided manual operation, and simultaneously, the difficult problem of LED lamp source heat dissipation has been solved through heating panel and the fan that is equipped with.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic view of an overall structure of an LED backlight protection device convenient for disassembly and assembly;

FIG. 2 is a schematic view of the structure at A-A in FIG. 1;

FIG. 3 is a schematic view of the structure at B-B in FIG. 2;

FIG. 4 is a schematic view of the structure at C-C in FIG. 1;

figure 5 is an enlarged schematic view of the structure at D in figure 1,

FIG. 6 is an enlarged view of the structure at E in FIG. 2;

FIG. 7 is a schematic view of the structure at F-F in FIG. 3;

FIG. 8 is a schematic diagram of the structure at G-G in FIG. 1;

fig. 9 is a schematic view showing the connection of the third magnet and the fourth magnet in the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-9, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Referring to fig. 1 to 9, an LED backlight protection device convenient to disassemble and assemble according to an embodiment of the present invention includes a frame 11, and a movable cavity 12 and a cavity 20 which are disposed in the frame 11 and open forward, the movable cavity 12 is communicated with the cavity 20, a movable device is disposed in the movable cavity 12, a power cavity 35 is disposed in the frame 11, a power device is disposed in the power cavity 35, a control cavity 31 is disposed in the frame 11, a control device is disposed in the control cavity 31, the control device includes a support rod 33 fixedly disposed on a rear wall of the control cavity 31, a rotating plate 25 extending left and right is rotatably disposed on the support rod 33, an empty-avoiding groove 26 is disposed in the rotating plate 25, a first magnet 30 is fixedly disposed at a right end of the rotating plate 25, the rotating plate 25 is connected to the rear wall of the control cavity 31 through a first spring 32, a first sliding groove 34 is disposed on a left wall of the control cavity 31, the inner wall of the right side of the control cavity 31 is rotatably provided with a threaded shaft 37 extending leftwards, two stop blocks 74 are fixedly arranged on the threaded shaft 37, a threaded plate 29 is connected onto the threaded shaft 37 in a threaded mode, a second magnet 36 is fixedly arranged on the threaded plate 29, the threaded plate 29 is connected with a moving device, and the rotating plate 25 is connected with a pressing device.

In addition, in one embodiment, the movable device includes a light guide plate 13 fixedly disposed on the left wall of the movable cavity 12, the upper and lower walls of the movable cavity 12 are symmetrically provided with second sliding grooves 48, the second sliding grooves 48 are slidably provided with first sliding blocks 50 that are bilaterally symmetric, the first sliding blocks 50 are connected to the inner walls of the second sliding grooves 48 through second springs 49, the upper and lower walls of the movable cavity 12 are symmetrically provided with third sliding grooves 51, the third sliding grooves 51 are slidably provided with second sliding blocks 53, the second sliding blocks 53 are connected to the inner walls of the third sliding grooves 51 through third springs 52, the end surfaces of the first sliding blocks 50 and the second sliding blocks 53 are inclined planes, the movable cavity 12 is provided with the movable plate 16, the movable cavity 16 is provided with the movable cavity 18, the inner wall of the movable cavity 18 is provided with soft cotton 17, and the rear wall of the movable cavity 12 is provided with a heat dissipation plate 60.

In addition, in one embodiment, the power device includes a motor 39 fixedly disposed on the left wall of the power cavity 35, the right end of the motor 39 is connected with a first worm 38, the right end of the first worm 38 is connected with a rotating block 73, a clearance groove 75 is disposed in the rotating block 73, fourth sliding grooves 76 are symmetrically disposed on the rotating block 73 in the up-down direction, a third slider 70 is disposed in the fourth sliding groove 76, an electromagnet 72 is disposed in the fourth sliding groove 76, the third slider 70 is connected with the electromagnet 72 through a fourth spring 71, the threaded shaft 37 is disposed in the clearance groove 75, a second worm 21 is rotatably disposed on the upper wall of the power cavity 35, the second worm 21 is provided with a first worm wheel 41 engaged with the first worm 38, air outlet grooves 22 with a backward opening are symmetrically disposed on the up-down direction of the rear wall of the power cavity 35, a through hole 27 communicated with the power cavity 35 is disposed on the inner wall of the front side of the air outlet grooves 22, the front wall of the air outlet groove 22 is provided with a rotating shaft 24 in a rotating mode, a second worm wheel 28 meshed with the second worm 21 is fixedly arranged on the rotating shaft 24, and the rotating shaft 24 is connected with a fan 23.

In addition, in one embodiment, the moving device includes a fifth sliding groove 56 disposed on the upper and lower walls of the frame 11 in an up-down symmetrical manner, the fifth sliding groove 56 communicates with the 35 through a sixth sliding groove 55, a sliding rod 54 is slidably disposed in the fifth sliding groove 56, a third magnet 63 is disposed on a front end face of an end of the sliding rod 54, a rotating link 61 is rotatably disposed on the sliding rod 54, a fourth magnet 62 is disposed in the rotating link 61, and the screw plate 29 extends into the sixth sliding groove 55 and is fixedly connected to the sliding rod 54.

In addition, in one embodiment, the pressing device includes a seventh sliding groove 44 disposed on the left wall of the frame 11 and opened forward, the seventh sliding groove 44 is communicated with the power chamber 35 through an eighth sliding groove 42, a sliding plate 45 is slidably disposed in the seventh sliding groove 44, the sliding plate 45 is connected with the inner wall of the seventh sliding groove 44 through a connecting spring 43, a through groove 47 is disposed in the sliding plate 45, and the rotating plate 25 extends into the eighth sliding groove 42 and is rotatably connected with the sliding plate 45.

In the initial state, the first spring 32 and the connecting spring 43 are both in the normal state, the second spring 49, the third spring 52 and the fourth spring 71 are in the compressed state, the electromagnet 72 is powered on to work, and the third magnet 63 and the fourth magnet 62 are in the open state.

When the LED light source needs to be installed or replaced, the movable plate 16 is manually taken out, the LED light source is placed in the movable cavity 18, then the movable plate 16 is reset, and the movable plate 16 is clamped by the first slider 50 and the second slider 53 under the elastic force of the second spring 49 and the third spring 52;

when an optical film needs to be installed, the optical film passes through the through slot 47 and extends to a position between the rotating link 61 and the sliding rod 54, the rotating link 61 is rotated, so that the third magnet 63 and the fourth magnet 62 are aligned and attracted, thereby, one end of the optical film passing through the through slot 47 is clamped by the attraction force of the third magnet 63 and the fourth magnet 62, the motor 39 is started to cut off the power of the electromagnet 72, the third slider 70 is ejected outwards under the action of the elastic force of the fourth spring 71, the motor 39 drives the first worm 38 to rotate, the first worm 38 drives the rotating block 73 to rotate, the rotating block 73 drives the third slider 70 to rotate, the third slider 70 drives the stopper 74 to rotate, the stopper 74 drives the threaded shaft 37 to rotate, and the threaded shaft 37 rotates to move the threaded plate 29 to the right, so that the sliding rod 54 and the rotating connecting rod 61 drive the optical diaphragm to move to the right, when the threaded plate 29 moves to the right, the second magnet 36 is attracted to the first magnet 30, so that the rotating plate 25 rotates around the supporting rod 33, so that the rotating plate 25 drives the sliding plate 45 to move backwards, so that the other end of the optical diaphragm is clamped and fixed, thereby realizing the installation of the optical diaphragm; when the LED light source is turned on, the LED light source diffusely reflects light onto the optical film through the light guide plate 13, so that the liquid crystal display screen operates normally.

When the optical film needs to be taken out, the motor 39 is controlled to rotate reversely, the electromagnet 72 is powered off, the threaded shaft 37 rotates reversely to enable the threaded plate 29 to move leftwards, and the sliding plate 45 is reset under the elastic force of the first spring 32 and the connecting spring 43, so that the optical film is taken out;

when heat dissipation is needed, the motor 39 is started, the electromagnet 72 is powered on, the fourth spring 71 is compressed, the third sliding block 70 is reset, the motor 39 drives the first worm 38 to rotate, the first worm 38 drives the first worm wheel 41 to rotate, the first worm wheel 41 drives the second worm 21 to rotate, the second worm 21 drives the second worm wheel 28 to rotate, the second worm wheel 28 drives the rotating shaft 24 to rotate, the rotating shaft 24 drives the fan 23 to rotate, and therefore heat generated by the LED light source is discharged to the outside through the heat dissipation plate 60 and the through hole 27.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a LED backlight protection device convenient to dismouting, includes the frame and set up in the frame and the forward activity chamber of opening and cavity, its characterized in that: the movable cavity is communicated with the cavity, a movable device is arranged in the movable cavity, a power cavity is arranged in the rack, the power cavity is internally provided with a power device, the rack is internally provided with a control cavity, the control cavity is internally provided with a control device, the control device comprises a support rod fixedly arranged on the rear wall of the control cavity, the support rod is rotatably provided with a rotating plate extending leftwards and rightwards, the rotating plate is internally provided with a clearance groove, the right end of the rotating plate is fixedly provided with a first magnet, the rotating plate is connected with the rear wall of the control cavity through a first spring, the left wall of the control cavity is provided with a first sliding groove, the inner wall of the right side of the control cavity is rotatably provided with a threaded shaft extending leftwards, the threaded shaft is fixedly provided with two stop blocks, the threaded shaft is in threaded connection with a threaded plate, the threaded plate is fixedly provided with a second magnet, and the threaded plate is, the rotating plate is connected with a pressing device; the movable device comprises a light guide plate fixedly arranged on the left wall of the movable cavity, the upper wall and the lower wall of the movable cavity are symmetrically provided with second sliding grooves, first sliding blocks which are bilaterally symmetrical are arranged in the second sliding grooves in a sliding mode, the first sliding blocks are connected with the inner walls of the second sliding grooves through second springs, the upper wall and the lower wall of the movable cavity are symmetrically provided with third sliding grooves, second sliding blocks are arranged in the third sliding grooves in a sliding mode, the second sliding blocks are connected with the inner walls of the third sliding grooves through third springs, the end faces of the first sliding blocks and the second sliding blocks are inclined planes, a movable plate is arranged in the movable cavity, a movable cavity is arranged in the movable plate, soft cotton is arranged on the inner wall of the movable cavity, and a heat dissipation plate is arranged on the rear wall of the movable; the power device comprises a motor fixedly arranged on the left wall of the power cavity, the right end of the motor is connected with a first worm, the right end of the first worm is connected with a rotating block, a clearance groove is formed in the rotating block, fourth sliding grooves are symmetrically formed in the rotating block in the vertical direction, a third sliding block is arranged in each fourth sliding groove, an electromagnet is arranged in each fourth sliding groove, the third sliding block is connected with the electromagnet through a fourth spring, the threaded shaft is located in the clearance groove, the upper wall of the power cavity is rotatably provided with a second worm, the second worm is provided with a first worm gear meshed with the first worm, the rear wall of the power cavity is symmetrically provided with an air outlet groove with a backward opening in the vertical direction, the inner wall of the front side of the air outlet groove is provided with a through hole communicated with the power cavity, the front wall of the air outlet groove is rotatably provided with a rotating shaft, and a second worm gear meshed with the second worm is fixedly arranged on the rotating shaft, the rotating shaft is connected with a fan; the moving device comprises fifth sliding grooves which are vertically and symmetrically arranged on the upper wall and the lower wall of the rack, the fifth sliding grooves are communicated with the rack through sixth sliding grooves, sliding rods are arranged in the fifth sliding grooves in a sliding mode, third magnets are arranged on the end faces of the front sides of the ends of the sliding rods, rotating connecting rods are arranged on the sliding rods in a rotating mode, fourth magnets are arranged in the rotating connecting rods, and the threaded plates extend into the sixth sliding grooves and are fixedly connected with the sliding rods; the pressing device comprises a seventh sliding groove which is arranged on the left wall of the rack and has a forward opening, the seventh sliding groove is communicated with the power cavity through an eighth sliding groove, a sliding plate is arranged in the seventh sliding groove in a sliding mode and is connected with the inner wall of the seventh sliding groove through a connecting spring, a through groove is formed in the sliding plate, and the rotating plate extends into the eighth sliding groove and is connected with the sliding plate in a rotating mode.