CN216248702U

CN216248702U - Novel lamp strip is in side income formula and is shaded device

Info

Publication number: CN216248702U
Application number: CN202122897530.9U
Authority: CN
Inventors: 杨秀培; 陈祥建
Original assignee: Suzhou Yiqikang Electronic Technology Co ltd
Current assignee: Suzhou Yiqikang Electronic Technology Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-04-08
Anticipated expiration: 2031-11-24

Abstract

The utility model discloses a novel side-entry type backlight device for a lamp strip, which comprises a fixed shell, wherein a bottom frame is fixedly arranged on the inner wall of the bottom of the fixed shell, a middle frame section bar is arranged inside one side of the fixed shell, a fixed hole is formed in the bottom of the middle frame section bar, and a threaded cylinder is fixedly connected to the inner wall of the fixed hole. The COB light bar is used for providing a light source for the backlight module and replacing the traditional LED light bar with the COB light bar for use, the COB light bar adopts a high-light-efficiency integrated surface light source technology, so that the support concept of the LED light bar is eliminated, and no electroless plating, reflow soldering and no surface mounting process are required, so that the processing flow of the light bar is reduced, the cost is relatively reduced, meanwhile, the LED chip is directly attached to the metal substrate, the COB light bar is fixedly attached through the heat conducting adhesive tape, the heat dissipation effect of the product can be improved, the COB light bar emits light uniformly and has no light spots, and the use effect of the backlight module is improved.

Description

Novel lamp strip is in side income formula and is shaded device

Technical Field

The utility model relates to the technical field of LCD backlight modules, in particular to a novel light bar side-in type backlight device.

Background

The backlight module is one of the key components of the liquid crystal display panel, and has the functions of supplying sufficient light sources with uniform brightness and distribution to enable the liquid crystal display panel to normally display images, the backlight source is a light source for providing the liquid crystal display panel and mainly comprises a light source, a light guide plate, an optical film, a plastic frame and the like, the backlight source has the characteristics of high brightness, long service life, uniform light emission and the like, at present, three backlight source types of EL, CCFL and LED are mainly adopted, the backlight module is divided into an edge type and a direct type (bottom backlight type) according to different light source distribution positions, and the edge type CCFL backlight source becomes the mainstream of the backlight source development along with the continuous development of the LCD module in the brighter, lighter and thinner directions.

LCD sidelight type module, generally adopt the integrated lamp strip of LED, because the lamp strip is in the light module is gone into to the LCD side, play the important function that provides the light source, in the product uses, the lamp strip has played critical effect, therefore, the lamp strip is indispensable partly in the LCD sidelight type module, and general lamp strip, adopt the lamp strip that the LED lamp pearl pasted formation on PCB metal circuit board with the mode of paster, because the LED lamp pearl is independent processing, consequently, lamp strip cycle is longer, and because LED lamp pearl inner structure is comparatively complicated (including the support, the circuit, the chip etc.), consequently, LED lamp strip cost is difficult to descend, lead to LCD sidelight type module cost higher, consequently, in LCD sidelight type module, need use a novel lamp strip.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide a novel light bar edge-in type backlight device, which solves the above-mentioned problems in the prior art by replacing a conventional LED light bar with a COB light bar.

In order to achieve the purpose, the utility model provides the following technical scheme: a novel lamp strip side-entering type backlight device comprises a fixed shell, wherein a bottom frame is fixedly mounted on the inner wall of the bottom of the fixed shell, a middle frame section is arranged inside one side of the fixed shell, a fixing hole is formed in the bottom of the middle frame section, a threaded cylinder is fixedly connected to the inner wall of the fixing hole, and a press riveting stud for mounting and connecting the internal structure of a backlight module is in threaded connection with the inner wall of the threaded cylinder;

a heat-conducting adhesive tape is bonded on one side of the middle frame section, a COB light bar for providing a light source for the interior of the backlight module is fixedly connected to one side of the heat-conducting adhesive tape, and a light guide plate for guiding and dispersing light is arranged on one side of the COB light bar;

the bottom of the light guide plate is provided with a reflector plate used for reflecting bottom light to the upper part, the top of the light guide plate is provided with an astigmatism structure, and the top of the astigmatism structure is provided with a liquid crystal display unit used for displaying pictures.

In a preferred embodiment, the bottom inner wall of the fixed shell is fixedly connected with one side of the bottom frame, and the bottom frame is fixedly installed with the middle frame section bar through the rivet pressing stud.

In a preferred embodiment, the outer wall of the rivet pressing stud is in threaded connection with the inner wall of the threaded cylinder, and the outer wall of the threaded cylinder is fixedly connected with the inner wall of the fixing hole.

In a preferred embodiment, the COB lamp strip passes through one side fixed connection of heat conduction adhesive tape and center section bar, and COB lamp strip symmetry sets up the both sides at the light guide plate to heat conduction adhesive tape's width is 4.5 ~ 4.7 mm.

In a preferred embodiment, the reflective sheet is fixedly connected to the top of the bottom frame, and the reflective sheet is disposed at the bottom of the light guide plate.

In a preferred embodiment, the light diffusion structure is disposed on the top of the light guide plate, and the light diffusion structure is a diffusion film, a BEF brightness enhancement film and a DBEF reflective polarization brightness enhancement film from bottom to top.

In a preferred embodiment, the liquid crystal display unit is fixedly arranged on the top of the light scattering structure, and the liquid crystal display unit is fixedly arranged on the inner wall of the fixed shell.

The utility model has the technical effects and advantages that:

1. through the arrangement of the COB light bar, the heat-conducting adhesive tape and the middle frame section bar, a light source is provided for the backlight module through the arrangement of the COB light bar in the using process, and the COB light bar replaces the traditional LED light bar for use, because the COB light bar adopts a high-light-efficiency integrated surface light source technology, the support concept of the LED light bar is eliminated, and no electroless plating, reflow soldering and no surface mounting process are adopted, so that the processing flow of the light bar is reduced, the cost is relatively reduced, meanwhile, the LED chip is directly pasted on the metal substrate, the COB light bar is fixedly pasted through the heat-conducting adhesive tape, the heat dissipation effect of a product can be improved, the COB light bar emits light uniformly and has no light spots, and the using effect of the backlight module is improved;

2. through the fixed orifices, the screw thread section of thick bamboo is riveted with the pressure setting of stud, in the installation of COB lamp strip, at first paste the COB lamp strip in one side of center section bar through heat conduction adhesive tape, then place the center section bar inside fixed housing, then close the lid with the underframe from the bottom, and rivet the double-screw bolt through the pressure and fix underframe and center section bar, thereby install the COB lamp strip fixedly, thereby make things convenient for the installation and use of COB lamp strip, and installation operation simple step, and then offer convenience to the user, make things convenient for later stage maintenance to dismantle simultaneously, thereby guarantee backlight unit's long-term use.

Drawings

FIG. 1 is a schematic diagram of a front cut-away structure according to the present invention.

Fig. 2 is a schematic view of a spatial structure portion of the light guide plate and the light diffusion structure according to the present invention.

Fig. 3 is a schematic view of a connection structure of the heat-conducting adhesive tape and the COB lamp strip of the present invention.

Fig. 4 is a schematic view of a split structure of the threaded cylinder and the press-riveting stud according to the utility model.

The reference signs are: 1. fixing the housing; 2. a bottom frame; 3. a middle frame section bar; 4. a fixing hole; 5. a threaded barrel; 6. pressing and riveting the stud; 7. a heat conducting adhesive tape; 8. a COB light bar; 9. a light guide plate; 10. a reflective sheet; 11. A light scattering structure; 12. a liquid crystal display unit.

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.

The novel lamp strip side-in type backlight device shown in fig. 1 and 4 comprises a fixed shell 1, wherein a bottom frame 2 is fixedly installed on the inner wall of the bottom of the fixed shell 1, a middle frame section bar 3 is arranged inside one side of the fixed shell 1, a fixing hole 4 is formed in the bottom of the middle frame section bar 3, a threaded cylinder 5 is fixedly connected to the inner wall of the fixing hole 4, and a press riveting stud 6 for installing and connecting the internal structure of a backlight module is in threaded connection with the inner wall of the threaded cylinder 5;

the bottom inner wall of the fixed shell 1 is fixedly connected with one side of the bottom frame 2, and the bottom frame 2 is fixedly installed with the middle frame section bar 3 through the press riveting stud 6.

The outer wall of the pressure riveting stud 6 is in threaded connection with the inner wall of the threaded cylinder 5, and the outer wall of the threaded cylinder 5 is fixedly connected with the inner wall of the fixing hole 4;

the implementation mode is specifically as follows: when the COB light bar 8 is installed, firstly, the COB light bar 8 is adhered to one side of the middle frame section bar 3 through the heat conducting adhesive tape 7 on one side of the COB light bar 8, after the COB light bar 8 is adhered and fixed, the middle frame section bar 3 is correspondingly arranged in the fixed shell 1, and the fixed shell 1 is placed upside down, the opening of the fixed shell 1 at one side of the bottom frame 2 is upward, then the bottom frame 2 is covered in the fixed shell 1, the rivet pressing stud 6 is aligned with the hole arranged at the beginning of the bottom frame 2, the rivet pressing stud 6 is put in, then, the rivet pressing stud 6 is aligned with the threaded cylinder 5, the rivet pressing stud 6 is screwed into the threaded cylinder 5, and the setting of fixed orifices 4 is convenient to fix threaded cylinder 5 inside center section bar 3, and rivets the cross countersunk head screw that the double-screw 6 is M3X 6, and attaches fixedly with center section bar 3 and underframe 2 through riveting the double-screw 6 lock.

According to the novel light bar edge-in type backlight device shown in fig. 2 and 3, a heat conducting adhesive tape 7 is bonded on one side of a middle frame section bar 3, a COB light bar 8 for providing a light source for the interior of a backlight module is fixedly connected to one side of the heat conducting adhesive tape 7, and a light guide plate 9 for guiding and dispersing light is arranged on one side of the COB light bar 8;

the COB light bars 8 are fixedly connected with one side of the middle frame section bar 3 through heat conducting adhesive strips 7, the COB light bars 8 are symmetrically arranged on two sides of the light guide plate 9, and the width of each heat conducting adhesive strip 7 is 4.5-4.7 mm;

the implementation mode is specifically as follows: what COB lamp strip 8 adopted is that the LED chip directly pastes the integrated area source technique of high light efficiency on the mirror surface metal substrate of high reflectance, and then the support concept of LED lamp strip has been eliminated, and electroless, no reflow soldering, no paster process, thereby the process flow of lamp strip has been reduced when the preparation, and COB lamp strip 8 is that the LED chip directly pastes on metal substrate, and then can improve the radiating effect of lamp pearl, heat conduction adhesive tape 7 is the heat conductivity viscose simultaneously, and then conveniently carries out the thermal treatment with COB lamp strip 8 when using.

According to the novel lamp bar side-in type backlight device shown in fig. 1 and fig. 2, a reflective sheet 10 for reflecting bottom light to the upper part is arranged at the bottom of a light guide plate 9, a light scattering structure 11 is arranged at the top of the light guide plate 9, and a liquid crystal display unit 12 for displaying pictures is arranged at the top of the light scattering structure 11;

the reflector plate 10 is fixedly connected to the top of the bottom frame 2, and the reflector plate 10 is arranged at the bottom of the light guide plate 9;

the light scattering structure 11 is arranged at the top of the light guide plate 9, and the light scattering structure 11 is provided with a diffusion film, a BEF (beam edge enhancement film) and a DBEF (direct reflection film) reflection type polarized light brightness enhancement film from bottom to top;

the liquid crystal display unit 12 is fixedly arranged at the top of the light scattering structure 11, and the liquid crystal display unit 12 is fixedly arranged on the inner wall of the fixed shell 1;

the implementation mode is specifically as follows: when COB lamp strip 8 uses, the light source that COB lamp strip 8 provided leads light through light guide plate 9, the reflector plate 10 through the bottom reflects the upside with the light of bottom simultaneously, and then avoid the light source to leak outward, and the diffusion piece in the astigmatism structure 11 uses PET or PC substrate preparation, openly smooth, the reverse side is coarse, be used for diffusing light, and the directionality of its light is relatively poor after the diffusion plate jets out, consequently must utilize the brightness enhancement film to revise the direction of light, even use BEF brightness enhancement film and DBEF reflection formula brightness enhancement film to revise the light direction, and then guarantee backlight unit's use, and carry out the demonstration of picture through liquid crystal display unit 12.

The working principle of the utility model is as follows:

referring to the attached drawings 1 and 4 of the specification, when installing the COB lamp strip 8, the COB lamp strip 8 is firstly fixed to one side of the middle frame section bar 3 through the heat conducting adhesive tape 7, then the middle frame section bar 3 is correspondingly placed inside the fixed shell 1, the bottom frame 2 is covered inside the fixed shell 1 in a closing mode, the press riveting stud 6 is placed in alignment with the threaded cylinder 5, then the press riveting stud 6 is screwed into the threaded cylinder 5, and then the middle frame section bar 3 and the bottom frame 2 are fixed through the press riveting stud 6;

referring to the attached

drawings

2 and 3 of the specification, the COB light bar 8 is formed by directly attaching an LED chip to a metal substrate, so that the heat dissipation effect of the lamp bead can be improved, and the heat conducting adhesive tape 7 is a heat conducting adhesive, so that the COB light bar 8 can be conveniently subjected to heat dissipation treatment when in use, and the heat dissipation effect of the COB light bar 8 is improved when in use;

referring to specification attached drawing 1 and fig. 2, when using COB lamp strip 8, the light source that COB lamp strip 8 produced carries out the leaded light through light guide plate 9, then the light of bottom upwards reflects through reflector plate 10, and then avoids the light source to leak outward, solves the relatively poor problem of light directive property through astigmatism structure 11 simultaneously, and utilizes the brightness enhancement piece to revise the direction of light, and then guarantees backlight unit's use.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the utility model, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the utility model can be combined with each other without conflict;

and finally: 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 utility model, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a novel lamp strip is at side income formula backlight device, includes fixed shell (1), its characterized in that: a bottom frame (2) is fixedly mounted on the inner wall of the bottom of the fixed shell (1), a middle frame section (3) is arranged inside one side of the fixed shell (1), a fixing hole (4) is formed in the bottom of the middle frame section (3), a threaded cylinder (5) is fixedly connected to the inner wall of the fixing hole (4), and a press riveting stud (6) for mounting and connecting the internal structure of the backlight module is in threaded connection with the inner wall of the threaded cylinder (5);

a heat conducting adhesive tape (7) is bonded on one side of the middle frame section bar (3), a COB light bar (8) used for providing a light source for the interior of the backlight module is fixedly connected to one side of the heat conducting adhesive tape (7), and a light guide plate (9) used for guiding and dispersing light is arranged on one side of the COB light bar (8);

the bottom of the light guide plate (9) is provided with a reflection sheet (10) used for reflecting bottom light rays to the upper part, the top of the light guide plate (9) is provided with a light scattering structure (11), and the top of the light scattering structure (11) is provided with a liquid crystal display unit (12) used for displaying pictures.

2. The novel light bar edge-in type backlight device of claim 1, wherein: the bottom inner wall of the fixed shell (1) is fixedly connected with one side of the bottom frame (2), and the bottom frame (2) is fixedly installed with the middle frame sectional material (3) through the press riveting stud (6).

3. The novel light bar edge-in type backlight device of claim 2, wherein: the outer wall of the pressure riveting stud (6) is in threaded connection with the inner wall of the threaded cylinder (5), and the outer wall of the threaded cylinder (5) is fixedly connected with the inner wall of the fixing hole (4).

4. The novel light bar edge-in type backlight device of claim 1, wherein: COB lamp strip (8) are through one side fixed connection of heat conduction adhesive tape (7) and center section bar (3), and COB lamp strip (8) symmetry sets up the both sides in light guide plate (9) to the width of heat conduction adhesive tape (7) is 4.5 ~ 4.7 mm.

5. The novel light bar edge-in type backlight device of claim 3, wherein: the reflector plate (10) is fixedly connected to the top of the bottom frame (2), and the reflector plate (10) is arranged at the bottom of the light guide plate (9).

6. The novel light bar edge-in type backlight device of claim 1, wherein: the light scattering structure (11) is arranged at the top of the light guide plate (9), and the light scattering structure (11) is a diffusion film, a BEF brightness enhancement film and a DBEF reflection type polarized light brightness enhancement film from bottom to top.

7. The novel light bar edge-in type backlight device of claim 1, wherein: the liquid crystal display unit (12) is fixedly arranged at the top of the light scattering structure (11), and the liquid crystal display unit (12) is fixedly arranged on the inner wall of the fixed shell (1).