CN215642163U

CN215642163U - Ultra-thin LED backlight source

Info

Publication number: CN215642163U
Application number: CN202121404475.9U
Authority: CN
Inventors: 徐贤强; 姜发明; 饶巍巍; 潘连兴
Original assignee: Shenzhen Australis Electronic Technology Co Ltd
Current assignee: Shenzhen Australis Electronic Technology Co Ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-01-25
Anticipated expiration: 2031-06-23

Abstract

The utility model discloses an ultra-thin LED backlight source, which comprises an L rod I, an L rod II, a light guide plate and a PCB plate, wherein the L rod I and the L rod II are assembled to form a frame for installing the light guide plate, a diffusion film is adhered to the upper surface of the light guide plate, a reflection film is adhered to the lower surface of the light guide plate, the side wall surfaces of the L rod I and the L rod II are respectively provided with an installation groove for installing the light guide plate, when the ultra-thin LED backlight source is used, the light guide plate is installed in the installation groove, the PCB plate is installed in the placement groove, the L rod I and the L rod II are combined to form the frame, the light guide plate is preliminarily fixed, two clamping blocks are sleeved at the joint of the L rod I and the L rod II, the clamping blocks are fixed by screwing screws into the screw holes I and the screw holes II, so that the L rod I and the L rod II are installed, the light guide plate is fixed, and the light guide plate is arranged in the installation groove, the leakproofness is better, avoids causing the condition of side light leak, and the installation is comparatively convenient with the dismantlement, has improved the practicality of this backlight.

Description

Ultra-thin LED backlight source

Technical Field

The application relates to the technical field of backlight sources, in particular to an ultra-thin LED backlight source.

Background

BackLight (BackLight) is a light source located behind a Liquid Crystal Display (LCD), and its lighting effect directly affects the visual effect of the liquid crystal display module (LCM). The liquid crystal display does not emit light, displays a pattern or modulates light, the most core technology in the backlight module is the optical technology of the light guide plate, and the optical technology mainly comprises two light guide plate forms of printing and injection molding, and other forms such as injection molding and printing, laser dotting, corrosion and the like account for a small proportion and are not suitable for the batch production principle. The printed light guide plate is a mainstream technology in the past for a long time because of low cost, but the qualified product is always a main defect, the LCD product requires a more precise light guide plate structure, the injection molded light guide plate is inevitably a mainstream for backlight development, but the corresponding technical problem of the mold can be overcome only by a small number of japan factories, the LCD always has a high requirement on the brightness of the backlight, but the high brightness also causes the LCD to have high power consumption, the backlight is used as the most power-consuming accessory in the LCD module and is not suitable for the requirement of the portable information product, so the backlight brightness is improved without increasing the power consumption to increase the L most power-consuming accessory, and the backlight brightness is not suitable for the requirement of the portable product, and the improvement of the backlight brightness without increasing the power consumption to increase the LCD brightness is one of the main development trends. The current goal is to achieve a flat fluorescent lamp with a luminance of 500-700 cd/m and a lifetime of 10 ten thousand hours.

As disclosed in the chinese patent: a backlight, publication No.: CN208848011U, "adopt the structure of optical anisotropy film collocation diffusion piece, improve the horizontal and vertical positive light-emitting of backlight, simple structure, it is with low costs, improve the light utilization ratio of backlight", but in the assembling process, the assembly of backlight is comparatively troublesome, and the installation is comparatively inconvenient with the dismantlement.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an ultra-thin LED backlight to solve the above problems.

The embodiment of the application adopts the following technical scheme:

the utility model provides an ultra-thin type LED backlight, includes L pole one, L pole two, light guide plate and PCB board, L pole one forms a frame that is used for installing the light guide plate with the assembly of L pole two, the diffusion barrier is pasted to the upper surface of light guide plate, the reflectance coating is pasted to the lower surface of light guide plate, the mounting groove that is used for installing the light guide plate is all offered with the lateral wall face of L pole two to L pole one, the useful standing groove of placing the PCB board is seted up to the side surface of L pole one, the internal face fixedly connected with baffle of standing groove, install the LED lamp on the PCB board, be provided with fixed knot structure between L pole one and the L pole two.

Preferably, the fixing structure comprises two clamping blocks and first threaded holes formed in the surfaces of the first L rod and the second L rod, and clamping grooves are formed in the surfaces of the two clamping blocks in a concave mode.

Preferably, the two clamping grooves are respectively connected to two ends of the joint of the first L rod and the second L rod in a sleeved mode.

Preferably, the surfaces of the two clamping blocks are provided with two threaded holes, each threaded hole is aligned with the corresponding threaded hole, each threaded hole and the corresponding threaded hole are internally screwed with a screw for screwing in, and the L rod I and the L rod II are fixedly installed through the screws and the clamping blocks.

The bottom surface of the inner wall of the placing groove is provided with a rectangular groove, and the inner wall surface of the rectangular groove is provided with heat dissipation holes penetrating through the rectangular groove.

The side wall face of rectangular channel has seted up the heat dissipation opening, the heat dissipation opening communicates with each other with the rectangular channel, the side surface of rectangular channel is seted up and is run through the pencil mouth that L pole one.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

one of which, during the use, install the light guide plate in the mounting groove, install the PCB board in the standing groove, form the frame with L pole one and L pole two combinations, tentatively fix the light guide plate, cup joint two fixture blocks in the junction of L pole one and L pole two, through going into screw hole one and screw hole two with the screw knob, make the fixture block fix, thereby make L pole one accomplish with the installation of L pole two, make the light guide plate fixed, because the light guide plate sets up in the mounting groove, the leakproofness is better, avoid causing the condition of side light leak, it is comparatively convenient to install and dismantle, the practicality of this backlight has been improved.

And secondly, during use, through being provided with the heat dissipation holes and the heat dissipation opening, heat emitted by the LED lamp on the PCB can enter the heat dissipation opening, and the heat dissipation opening is communicated with the heat dissipation holes, so that the heat emitted can be discharged from the heat dissipation holes, the heat dissipation effect of the backlight source is improved, the service life of the LED lamp is prolonged, and through being provided with the wiring harness opening, the fixed wiring harness is easier, and the applicability is better.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of the backlight;

FIG. 2 is a schematic structural view of a mounting groove;

FIG. 3 is a schematic view of an LED lamp;

FIG. 4 is a schematic structural diagram of a fixture block;

fig. 5 is a schematic structural diagram of a top view of the L-bar.

In the figure: 1. a first L rod; 11. a placement groove; 12. a baffle plate; 2. a second L-shaped rod; 3. a light guide plate; 31. a diffusion membrane; 32. a reflective film; 4. a PCB board; 41. an LED lamp; 5. mounting grooves; 6. a first threaded hole; 7. a clamping block; 71. a card slot; 72. a second threaded hole; 8. a screw; 100. a rectangular groove; 200. heat dissipation holes; 300. a heat dissipation port; 400. and a wire harness port.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, 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 application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Example 1

Referring to fig. 1, 2, 3 and 4, the present invention provides an ultra-thin LED backlight source, which includes a first L rod 1, a second L rod 2, a light guide plate 3 and a PCB 4, wherein the first L rod 1 and the second L rod 2 are assembled to form a frame for mounting the light guide plate 3, a diffusion film 31 is adhered on the upper surface of the light guide plate 3, a reflective film 32 is adhered on the lower surface of the light guide plate 3, mounting grooves 5 for mounting the light guide plate 3 are formed on the side wall surfaces of the first L rod 1 and the second L rod 2, a placing groove 11 for placing the PCB 4 is formed on the side wall surface of the first L rod 1, a baffle 12 is fixedly connected to the inner wall surface of the placing groove 11, an LED lamp 41 is mounted on the PCB 4, a fixing structure is disposed between the first L rod 1 and the second L rod 2, the fixing structure includes two blocks 7 and a first screw hole 6 formed on the surfaces of the first L rod 1 and the second L rod 2, the number of the two blocks 7 is two, clamping grooves 71 are recessed in the surfaces of the two clamping blocks 7, the two clamping grooves 71 are connected to two ends of the joint of the first L rod 1 and the second L rod 2 in a sleeved mode respectively, threaded holes second 72 are formed in the surfaces of the two clamping blocks 7, each threaded hole first 6 is aligned with the threaded hole second 72, screws 8 are arranged in the threaded holes first 6 and the threaded holes second 72 in a rotating mode, and the first L rod 1 and the second L rod 2 are fixedly installed through the screws 8 and the clamping blocks 7.

During the use, install light guide plate 3 in mounting groove 5, install PCB board 4 in standing groove 11, form the frame with the combination of L pole one 1 and L pole two 2, tentatively fix light guide plate 3, cup joint two fixture blocks 7 in the junction of L pole one 1 and L pole two 2, through going into screw hole one 6 and screw hole two 72 with the 8 turnbuttons of screw, make fixture block 7 fix, thereby make L pole one 1 and the installation of L pole two 2 accomplish, make light guide plate 3 fixed, because light guide plate 3 sets up in mounting groove 5, the leakproofness is better, avoid causing the condition of side light leak, it is comparatively convenient to install and dismantle, the practicality of this backlight has been improved.

EXAMPLE 2

Referring to fig. 5, based on embodiment 1, a rectangular groove 100 is formed on a bottom surface of an inner wall of the placement groove 11, a heat dissipation hole 200 penetrating through the rectangular groove 100 is formed on an inner wall surface of the rectangular groove 100, a heat dissipation through hole 300 is formed on a side wall surface of the rectangular groove 100, the heat dissipation through hole 300 is communicated with the rectangular groove 100, and a wire harness opening 400 penetrating through the L-shaped rod one 1 is formed on a side surface of the rectangular groove 100.

During the use, through being provided with louvre 200, heat dissipation opening 300, the heat that LED lamp 41 on the PCB board 4 gived off can enter into heat dissipation opening 300 in, because heat dissipation opening 300 communicates with each other with louvre 200, the heat that gives off can be followed louvre 200 and discharged, has improved the radiating effect of this backlight, prolongs the life of LED lamp 41, through being provided with pencil mouth 400 for fixed pencil is easier, and the suitability is better.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The utility model provides an ultra-thin type LED backlight, includes L pole one (1), L pole two (2), light guide plate (3) and PCB board (4), its characterized in that: the LED lamp comprises a light guide plate (3), a frame, a diffusion film (31), a reflection film (32), a mounting groove (5) and a placing groove (11), wherein the light guide plate (3) is mounted on the upper surface of the light guide plate (3), the lower surface of the light guide plate (3) is bonded with the reflection film (32), the mounting groove (5) is used for mounting the light guide plate (3) is formed in the side wall surfaces of the L rod (1) and the L rod (2), the placing groove (11) is used for placing a PCB (4) in the side surface of the L rod (1), a baffle (12) is fixedly connected to the inner wall surface of the placing groove (11), and an LED lamp (41) is mounted on the PCB (4);

and a fixing structure is arranged between the first L rod (1) and the second L rod (2).

2. The ultra-thin LED backlight of claim 1, wherein: the fixing structure comprises two clamping blocks (7) and first threaded holes (6) formed in the surfaces of the first L rod (1) and the second L rod (2), and clamping grooves (71) are formed in the surfaces of the two clamping blocks (7) in an inwards concave mode.

3. The ultra-thin LED backlight of claim 2, wherein: the two clamping grooves (71) are respectively connected to two ends of the joint of the first L rod (1) and the second L rod (2) in a sleeved mode.

4. The ultra-thin LED backlight of claim 3, wherein: threaded holes II (72) are formed in the surfaces of the two clamping blocks (7), each threaded hole I (6) is aligned with the threaded hole II (72), each threaded hole I (6) and the threaded hole II (72) are internally screwed with a screw (8) for screwing in a rotating mode, and the L-shaped rod I (1) and the L-shaped rod II (2) are fixedly installed through the screws (8) and the clamping blocks (7).

5. The ultra-thin LED backlight of claim 4, wherein: the bottom surface of the inner wall of the placing groove (11) is provided with a rectangular groove (100), and the inner wall surface of the rectangular groove (100) is provided with heat dissipation holes (200) penetrating through the rectangular groove (100).

6. The ultra-thin LED backlight of claim 5, wherein: the side wall surface of rectangular channel (100) has seted up heat dissipation opening (300), heat dissipation opening (300) communicate with each other with rectangular channel (100), pencil mouth (400) that run through L pole (1) are seted up to the side surface of rectangular channel (100).