CN217484648U

CN217484648U - Sidelight module and display device

Info

Publication number: CN217484648U
Application number: CN202221615799.1U
Authority: CN
Inventors: 林福昆; 赵靖; 廖延锁; 覃香扬; 蒲欣培; 顾浩; 谢飞
Original assignee: Shenzhen Zhaochi Guangyuan Technology Co ltd
Current assignee: Shenzhen Zhaochi Guangyuan Technology Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-09-23
Anticipated expiration: 2032-06-24

Abstract

The utility model provides a sidelight module and display device, concretely relates to photoelectric display technical field, this sidelight module includes: the PCB comprises a light incident side vertical side wall and a PCB substrate fixed on the light incident side vertical side wall; a plurality of cushion blocks and LED light bars are fixed on the PCB substrate, and two LED light bars are symmetrically arranged on two sides of each cushion block; go into the perpendicular lateral wall of light side with be equipped with the convex closure structure between the PCB base plate, the convex closure structure correspondence sets up in LED lamp strip below, convex closure structure top surface sets up towards the cushion slope, so that LED lamp strip orientation a side slope of cushion, the utility model provides a side light energy of part LED lamp strip is sheltered from and reflects by the cushion among the prior art, and the light guide plate region that the cushion corresponds can lead to the unusual technical problem of picture display because of the light energy disappearance forms serious shadow problem.

Description

Sidelight module and display device

Technical Field

The utility model belongs to the technical field of photoelectric display, specifically relate to a sidelight module and display module assembly.

Background

As shown in fig. 1, in the conventional side light module, the PCB substrate 2 is fixed on the light incident side vertical sidewall 1, the LED light strips 3 are fixed on the PCB substrate 2, the cushion block 4 is disposed between the two LED light strips 3, the light guide plate 5 is disposed above the LED light strips 3, the LED point light sources are converted into the surface light source through the light guide plate 5, uniform backlight is provided for the liquid crystal panel, the conventional cushion block structure is higher than the LED light strips and is opaque, part of the side light energy of the LED light strips can be shielded and reflected by the cushion block, the light guide plate area corresponding to the cushion block can form a serious shadow problem due to the lack of the light energy, and abnormal image display is caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a sidelight module and display device for the side light energy of solving part LED lamp strip among the prior art is sheltered from and is reflected by the cushion, and the light guide plate region that the cushion corresponds can form serious shadow problem because of the light energy disappearance, leads to the unusual technical problem of picture display.

On the one hand, this utility model provides following technical scheme, a side light module, include: the PCB comprises a light incident side vertical side wall and a PCB substrate fixed on the light incident side vertical side wall;

a plurality of cushion blocks and LED light bars are closely fixed on the PCB substrate, and two LED light bars are symmetrically arranged on two sides of each cushion block;

a plurality of convex hull structures are arranged between the vertical side wall of the light incident side and the PCB substrate, the convex hull structures are correspondingly arranged below the LED light bars, and the top surfaces of the convex hull structures are obliquely arranged towards the cushion blocks;

the LED lamp strip and the top surface of the convex hull structure are arranged in parallel, so that the LED lamp strip faces to one side of the cushion block in an inclined mode.

Compared with the prior art, the beneficial effects of the application are that: this application can jack up LED lamp strip through the convex hull structure to make LED lamp strip towards the lopsidedness of cushion, the emergent light energy of LED lamp strip also can be towards the same angle of cushion slope, thereby carries out the light energy compensation of pertinence to the light guide plate area at cushion place, avoids appearing the shadow problem, promotes the homogeneity of sidelight optical module frame demonstration.

Preferably, the convex hull structure is a wedge-shaped structure or the cross section of the convex hull structure is a triangular structure.

Preferably, the convex hull structure and the light incident side vertical sidewall are integrally disposed.

Preferably, the height difference between the top surface of the LED lamp strip and the top surface of the cushion block is not less than 0.3 mm.

Preferably, the inclination angle of one side of the LED lamp strip facing the cushion block is 5-10 degrees.

Preferably, a heat conducting glue is coated between the light incident side vertical side wall and the PCB substrate.

On the other hand, this utility model provides following technical scheme, a display device, display device includes above-mentioned sidelight module.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

FIG. 1 is a diagram of a prior art side light module;

fig. 2 is a structural diagram of a side light module according to a first embodiment of the present invention;

fig. 3 is a structural diagram of a side light module according to a second embodiment of the present invention.

Description of reference numerals:

light incident side vertical sidewall	1	PCB substrate	2
				LED lamp strip	3	Cushion block	4
Light guide plate	5	Convex hull structure	6
				Heat-conducting glue	7

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings only for the convenience of description of the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element so indicated must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

Example one

In a first embodiment of the present invention, as shown in fig. 2, a side light module includes: the method comprises the following steps: a light incident side vertical sidewall 1 and a PCB substrate 2 fixed on the light incident side vertical sidewall 1;

the PCB substrate 2 may be an FPC, a glass fiber substrate, an aluminum substrate, or the like, and in this embodiment, the FPC is preferred.

A plurality of cushion blocks 4 and LED lamp strips 3 are fixed on the PCB substrate 2, and two LED lamp strips 3 are symmetrically arranged on two sides of each cushion block 4;

wherein, the cushion block 4 is disposed between the two LED light bars 3, and the cushion block 4 is made of metal or plastic material, and is used for supporting the light guide plate 5 and maintaining the designed gap between the light guide plate 5 and the LED light bars 3.

A plurality of convex hull structures 6 are arranged between the light incident side vertical side wall 1 and the PCB substrate 2, the convex hull structures 6 are correspondingly arranged below the LED light bar 3, the side surface of the convex hull structure 6 close to the PCB substrate 2 is obliquely arranged towards the cushion block 4, and the LED light bar 3 and the side surface of the convex hull structure 6 close to the PCB substrate 2 are arranged in parallel, so that the LED light bar 3 is obliquely arranged towards one side of the cushion block 4;

it is worth to be noted that the convex hull structure 6 is arranged between the light incident side vertical side wall 1 and the PCB substrate 2, so that the LED light bars 3 on the PCB substrate 2 can be jacked up, and the LED light bars 3 arranged on two sides of the cushion block 4 can be inclined towards the cushion block 4 through the inclined arrangement of the top surface of the convex hull structure 6, so that the emergent light energy of the LED light bars can also be inclined towards the cushion block 4 by the same angle, thereby performing targeted light energy compensation on the area of the light guide plate 5 where the cushion block 4 is located, avoiding the occurrence of shadow problem, and improving the picture display uniformity of the side light module;

meanwhile, the convex hull structure 6 jacks up the LED light bars 3, and correspondingly, the PCB substrate 2 may also deform following the shape of the convex hull structure 6, specifically, in this embodiment, the PCB substrate 2 is cut off, that is, the PCB substrate 2 is cut off at the front and back sides of the LED light bars and at the side where the two LED light bars 3 are away from each other, to form a C-shaped cut-off line, so that the PCB substrate 2 can smoothly attach to the convex hull structure 6 and the light incident side vertical side wall 1, thereby avoiding a gap between the PCB substrate 2 and the convex hull structure 6 and the light incident side vertical side wall 1, and further, the distance between the cut-off line of the PCB substrate 2 and the LED light bars 3 is 0.1mm to 0.3 mm.

In this embodiment, the cross-section of the convex hull structure 6 is a triangular structure, the top surface of the convex hull structure 6 is inclined, the position of the cushion block 4 is below the lowest point of the top surfaces of the two convex hull structures 6, the LED light bar 3 is correspondingly arranged above the inclined plane of the convex hull structure 6, the emergent light direction of the LED light bar 3 is changed, and the uniformity of the picture display of the sidelight light module is improved.

In this embodiment, the convex hull structure 6 and the perpendicular lateral wall 1 of income light side sets up integratively, so sets up for when the shaping of convex hull structure 6, it is simpler, need not to produce alone and make convex hull structure 6.

In this embodiment, the height difference between the top surface of the LED light bar 3 and the top surface of the cushion block 4 is not less than 0.3mm, and 0.3mm is the minimum installation gap between the light guide plate 5 and the LED light bar 3, so as to ensure the light energy uniformity in the area of the light guide plate 5.

In this embodiment, the angle of the inclination of the LED light bar 3 towards one side of the cushion block 4 is 5 ° -10 °, when the inclination angle is smaller than 5 °, the shadow part in the area of the light guide plate 5 cannot be sufficiently eliminated, resulting in uneven display of the side light module, when the inclination angle is larger than 10 °, the shadow part in the area of the light guide plate 5 is eliminated, but the light energy in the rest areas of the light guide plate 5 is insufficient, and the light energy at the original shadow is more, still resulting in uneven display of the side light module.

In this embodiment, a heat conducting adhesive 7 is coated between the light incident side vertical sidewall 1 and the PCB substrate 2, and it should be noted that the heat conducting adhesive 7 is also coated between the PCB substrate 2 and the convex hull structure 6, so as to ensure the tightness of the connection between the light incident side vertical sidewall 1 and the PCB substrate 2 and between the convex hull structure 6 and the PCB substrate 2.

Example two

In a second embodiment of the present invention, as shown in fig. 3, the structure of the side light module provided in this embodiment is the same as that of the side light module provided in the first embodiment, but the differences are as follows:

the convex hull structure 6 is a wedge-shaped structure, and is concrete, in the convex hull structure 6 of the first embodiment, fill with heat conduction glue 7 between the one side that two convex hull structures 6 are close to each other, and the convex hull structure 6 that provides in the second embodiment, also fill with heat conduction glue 7 between the one side that two convex hull structures 6 are close to each other, but the 6-bit wedge-shaped structure of convex hull structure that provides in the second embodiment, and have a take the altitude on the one side that is close to each other, thereby jack up certain distance with cushion 4, can be guaranteeing under the prerequisite of the minimum installation clearance between light guide plate 5 and LED lamp strip 3 this moment, suitably change the height of cushion 4, in order to satisfy the normal demonstration of sidelight module.

EXAMPLE III

In a third embodiment of the present invention, the present embodiment provides a display device, where the display device includes the sidelight module provided in the first embodiment or the second embodiment;

it should be noted that the display device includes, but is not limited to, any electronic device using the edge light module provided in the first embodiment or the second embodiment.

To sum up, the utility model provides a side light module can be with 3 jack-ups of LED lamp strip through convex hull structure 6 to make 3 inclines towards one side of cushion 4 of LED lamp strip, the emergent light energy of LED lamp strip 3 also can be towards the same angle of 4 slopes of cushion, thereby carries out the light energy compensation of pertinence to 5 regions of light guide plate at cushion 4 place, avoids appearing the shadow problem, promotes side light module picture display's homogeneity.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An edge light module, comprising: the PCB comprises a light incident side vertical side wall and a PCB substrate fixed on the light incident side vertical side wall;

a plurality of cushion blocks and LED lamp strips are tightly fixed on the PCB substrate, and two LED lamp strips are symmetrically arranged on two sides of each cushion block;

2. The side light module according to claim 1, wherein the convex hull structure is wedge-shaped or triangular in cross-section.

3. The side light module of claim 1, wherein the convex hull structure is integral with the light entry side vertical sidewall.

4. The side light module of claim 1, wherein the height difference between the top surface of the LED light bar and the top surface of the spacer is not less than 0.3 mm.

5. The side light module of claim 1, wherein the LED light bar is inclined towards one side of the cushion block by an angle of 5-10 °.

6. The edge light module of claim 1, wherein a thermally conductive adhesive is applied between the light-incident-side vertical sidewall and the PCB substrate.

7. A display device comprising an edge-lit module according to any of claims 1-6.