CN216979528U

CN216979528U - Cascaded center and backlight unit of backlight unit

Info

Publication number: CN216979528U
Application number: CN202220717691.7U
Authority: CN
Inventors: 樊友俊; 李路; 余玲
Original assignee: Shandong Youtengda Technology Co ltd
Current assignee: Shandong Youtengda Technology Co ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-07-15
Anticipated expiration: 2032-03-30

Abstract

The utility model discloses a stepped middle frame of a backlight module and the backlight module, which comprises a module structure and a frame, the module structure comprises an upper diffusion sheet, a prism sheet, a lower diffusion sheet, a light guide plate and a reflection sheet, the left sides of the front and the back surfaces of the inner side of the frame are provided with a plurality of limiting ladder blocks which are formed in a stepped manner, the right end of the frame is provided with a limiting frame, the front side and the rear side of the right end of the frame are both provided with slots in a penetrating way, the front and back of the right end of the frame are provided with through openings through relative to the slots, the front and back of the right end of the frame are provided with placing grooves through relative to the two sides of the through openings, the rear end of the interior of the placing groove is provided with a limiting cylinder, the interior of the limiting cylinder is connected with a rebound plate in a sliding way, one end of the rebound plate is provided with a connecting rod, and the outer end of the connecting rod is provided with a spring in the limiting barrel. The utility model can be effectively and conveniently disassembled and assembled and is convenient to use.

Description

Cascaded center and backlight unit of backlight unit

Technical Field

The present disclosure relates to backlight modules, and particularly to a stepped middle frame of a backlight module and a backlight module.

Background

The backlight module is one of the key components of the liquid crystal display panel. The function is to provide sufficient brightness and light source with uniform distribution, so that the image can be displayed normally. 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 liquid crystal itself does not emit light, and it displays graphics or characters as a result of its modulation of light.

In the prior art, the middle frame of the backlight module has certain defects, the supporting effect is poor, the operation and the use are inconvenient, and the disassembly and the assembly are inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a stepped middle frame of a backlight module and the backlight module.

In order to achieve the purpose, the utility model adopts the following technical scheme: a step-type middle frame of a backlight module and the backlight module comprise a module structure and a frame, wherein the module structure comprises an upper diffusion sheet, a prism sheet, a lower diffusion sheet, a light guide plate and a reflection sheet;

the utility model discloses a spacing frame, including frame, limiting ladder piece, slot, setting up groove, limiting ladder piece, frame, setting up spring, limiting ladder piece, limiting frame, slot, limiting frame, and limiting frame.

As a further description of the above technical solution:

and the lower end surface of the limiting ladder block is provided with an anti-slip pad.

As a further description of the above technical solution:

the upper diffusion sheet, the prism sheet, the lower diffusion sheet, the light guide plate and the reflection sheet are respectively and correspondingly inserted between the limiting ladder blocks.

As a further description of the above technical solution:

one end of the connecting rod is provided with a pulling plate relative to the outer end of the frame.

As a further description of the above technical solution:

and the middle part of the pulling plate is provided with a positioning block relative to the through hole.

As a further description of the above technical solution:

the left end front and back sides of the limiting frame are provided with inserting blocks, and the side faces of the inserting blocks are provided with positioning grooves in a penetrating mode.

The utility model has the following beneficial effects:

1. according to the stepped middle frame of the backlight module and the backlight module, the upper diffusion sheet, the prism sheet, the lower diffusion sheet, the light guide plate and the reflection sheet are respectively and correspondingly inserted between the limiting stepped blocks, and position limiting support is effectively formed for use, so that the single replacement and use of the stepped middle frame are effectively facilitated, anti-skid use is formed through the anti-skid pad, and position deviation in the use process is avoided;

2. according to the stepped middle frame of the backlight module and the backlight module, the pull plate is pulled to move the positioning block at the pull plate position to the inside of the through opening, the insertion blocks at the front side and the rear side of the left end of the limiting frame are inserted into the insertion slot at the right end of the frame, the pull plate is released, the resilience force generated by the spring in the limiting cylinder is applied to the resilient plate, the resilience force is applied to the pull plate through the connecting rod, so that the positioning block at the pull plate position is rebounded to the inside of the positioning slot at the insertion block position, the insertion block position is supported and used, the installation and the use are convenient, the disassembly, assembly and replacement are effectively facilitated, and the use convenience is improved.

Drawings

Fig. 1 is an external view of a stepped middle frame of a backlight module and the backlight module according to the present invention;

fig. 2 is a bottom view of a stepped middle frame of a backlight module and a limiting block of the backlight module according to the present invention;

fig. 3 is a schematic structural view of a stepped middle frame of a backlight module and a limiting frame of the backlight module according to the present invention;

fig. 4 is a schematic side view of a stepped middle frame of a backlight module and a frame of the backlight module according to the present invention;

fig. 5 is an enlarged schematic view of the structure at a in fig. 4.

Illustration of the drawings:

1. a limiting ladder block; 2. a module structure; 201. an upper diffusion sheet; 202. a prism sheet; 203. a lower diffusion sheet; 204. a light guide plate; 205. a reflective sheet; 3. a frame; 4. pulling a plate; 5. a limiting frame; 6. a non-slip mat; 7. positioning a groove; 8. inserting a block; 9. a port; 10. positioning blocks; 11. a slot; 12. a placing groove; 13. a limiting cylinder; 14. a rebound board; 15. a spring; 16. a connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, one embodiment of the present invention is provided: a step type middle frame of a backlight module and the backlight module comprise a module structure 2 and a frame 3, wherein the module structure 2 comprises an upper diffusion sheet 201, a prism sheet 202, a lower diffusion sheet 203, a light guide plate 204 and a reflection sheet 205, the left sides of the front and back surfaces of the inner side of the frame 3 are respectively provided with a plurality of limiting ladder blocks 1, the limiting ladder blocks 1 are in step type composition, the upper diffusion sheet 201, the prism sheet 202, the lower diffusion sheet 203, the light guide plate 204 and the reflection sheet 205 are respectively and correspondingly inserted between the limiting ladder blocks 1 to effectively limit and support the positions of the upper diffusion sheet 201, the prism sheet 202, the lower diffusion sheet 203, the light guide plate 204 and the reflection sheet 205, thereby being effectively convenient for single replacement and use, the lower end surface of the limiting ladder blocks 1 is provided with an anti-slip mat 6, the upper diffusion sheet 201, the prism sheet 202, the lower diffusion sheet 203, the light guide plate 204 and the reflection sheet 205 are in anti-slip use through the anti-slip mat 6, the position deviation is avoided in the using process;

a limiting frame 5 is arranged at the right end of a frame 3, inserting blocks 8 are arranged at the front side and the rear side of the left end of the limiting frame 5, positioning grooves 7 are arranged on the side surfaces of the inserting blocks 8 in a penetrating manner, inserting grooves 11 are arranged at the front side and the rear side of the right end of the frame 3 in a penetrating manner, through holes 9 are arranged at the front side and the rear side of the right end of the frame 3 in a penetrating manner and are opposite to the inserting grooves 11, placing grooves 12 are arranged at the front side and the rear side of the right end of the frame 3 in a penetrating manner and are opposite to the two sides of the through holes 9, a limiting cylinder 13 is arranged at the rear end inside the placing grooves 12, a rebound plate 14 is connected inside the limiting cylinder 13 in a sliding manner, a connecting rod 16 is arranged at one end of the connecting rod 16 and is arranged inside the limiting cylinder 13, a pull plate 4 is arranged at one end of the through hole 16 and opposite to the outer end of the frame 3, a positioning block 10 is arranged at the middle part of the pull plate 4 and is arranged opposite to the through hole 9, insert the inside of the right-hand member slot 11 of inserting the frame 3 through the inserted block 8 of 5 left ends front and back sides of department of spacing, put the hand with arm-tie 4, rebound board 14 departments are used to resilience force through spring 15 production in the spacing section of thick bamboo 13, and use the arm-tie 4 department with resilience force through connecting rod 16, with the inside of arm-tie 4 department locating piece 10 resilience to inserted block 8 department constant head tank 7, form and support the use to inserted block 8 position, be convenient for install and use.

The working principle is as follows: go up diffusion sheet 201, prism sheet 202, diffusion sheet 203 down, light guide plate 204 and reflector plate 205 correspond respectively and insert between spacing ladder 1, the limited support is used, move the inside of opening 9 with pull plate 4 department locating piece 10 through pulling pull plate 4, insert the inside of the right-hand member slot 11 of frame 3 through the inserted block 8 of spacing 5 department left end front and back sides, put aside pull plate 4, rebound force that spring 15 produced through spacing section of thick bamboo 13 is used to rebound board 14 department, and act the pull plate 4 department through connecting rod 16 with rebound force, kick-back to the inside of inserted block 8 department constant head tank 7 with pull plate 4 department locating piece 10, form and support the use to inserted block 8 position.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a cascaded center of backlight unit, includes module structure (2) and frame (3), its characterized in that: the module structure (2) comprises an upper diffusion sheet (201), a prism sheet (202), a lower diffusion sheet (203), a light guide plate (204) and a reflection sheet (205);

the left sides of the front and the back of the inner side of the frame (3) are provided with a limit ladder block (1), the limiting ladder blocks (1) are arranged in a plurality of step-shaped assemblies, the right end of the frame (3) is provided with a limiting frame (5), slots (11) are respectively arranged at the front side and the rear side of the right end of the frame (3) in a penetrating way, through holes (9) are arranged at the front side and the rear side of the right end of the frame (3) in a penetrating way relative to the slots (11), the front and back surfaces of the right end of the frame (3) and two sides corresponding to the through hole (9) are respectively provided with a placing groove (12) in a penetrating way, a limiting cylinder (13) is arranged at the rear end of the interior of the placing groove (12), a rebound plate (14) is connected to the interior of the limiting cylinder (13) in a sliding manner, one end of the rebound plate (14) is provided with a connecting rod (16), and the outer end of the connecting rod (16) and the inside of the limiting cylinder (13) are provided with a spring (15).

2. The stepped middle frame of a backlight module according to claim 1, wherein: and the lower end surface of the limiting ladder block (1) is provided with an anti-slip pad (6).

3. The stepped middle frame of a backlight module according to claim 2, wherein: the upper diffusion sheet (201), the prism sheet (202), the lower diffusion sheet (203), the light guide plate (204) and the reflection sheet (205) are respectively and correspondingly inserted between the limiting ladder blocks (1).

4. The stepped middle frame of a backlight module according to claim 3, wherein: and a pulling plate (4) is arranged at one end of the connecting rod (16) and is opposite to the outer end of the frame (3).

5. The stepped middle frame of a backlight module according to claim 4, wherein: and a positioning block (10) is arranged in the middle of the pulling plate (4) and opposite to the through hole (9).

6. The stepped middle frame of a backlight module according to claim 5, wherein: the left end front and back side of spacing (5) all is provided with inserted block (8), the side of inserted block (8) is run through and is provided with constant head tank (7).

7. The utility model provides a cascaded backlight unit of backlight unit which characterized in that: a stepped middle frame comprising the backlight module of any one of claims 1-6.