CN210035372U

CN210035372U - Lens, lighting device, display module and display device

Info

Publication number: CN210035372U
Application number: CN201921006706.3U
Authority: CN
Inventors: 李健林; 石梦莲; 姚黎晓; 刘金龙
Original assignee: Shenzhen TCL New Technology Co Ltd
Current assignee: Shenzhen TCL New Technology Co Ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2020-02-07
Anticipated expiration: 2029-07-01

Abstract

The utility model discloses a lens, lighting device, display module assembly and display device, lens include the lens body, wherein, the symmetry is provided with the breach on the lens body, the breach certainly the side of lens body extends to its center department, the breach is followed the top surface of lens body runs through extremely the bottom surface of lens body. After lens and lamp pearl cooperation installation, the light quantity that the breach department sent reduces, and makes most light to the regional concentration in breach both sides for when a plurality of lamp pearls were installed in a row, the regional light quantity of light overlap between two adjacent lamp pearls reduces, and luminance weakens, weakens central zone and marginal area's luminance difference when lens outgoing light promotes display module's visual effect homogeneity.

Description

Lens, lighting device, display module and display device

Technical Field

The utility model relates to a lighting device technical field especially relates to a lens, lighting device, display module assembly and display device.

Background

Traditional display module assembly includes the PCB board, be provided with the lamp pearl on the PCB board, erection lens on the lamp pearl, increase the luminous angle of lamp pearl through lens, realize display module assembly's even light-emitting, but because the stack of two lamp pearl transmission light, can make regional (luminance enhancement region) interior light intensity height between two adjacent lamp pearls, just lead to lens center luminance low when outwards launching light behind the light that lens received lamp pearl transmission, and edge luminance is high, center luminance is big with edge luminance difference, final visual effect shows for bright dark inhomogeneous.

Accordingly, the prior art is yet to be improved and developed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the present invention is to provide the above-mentioned defects of the prior art

A lens, a lighting device, a display module and a display device aim at solving the problem that the existing display module is uneven in visual effect.

The utility model provides a technical scheme that technical problem adopted as follows:

a lens comprises a lens body, wherein notches are symmetrically arranged on the lens body, extend from the side surface of the lens body to the center of the lens body, and penetrate through the top surface of the lens body to the bottom surface of the lens body.

The lens, wherein the diameter of the top surface of the lens body is smaller than the diameter of the bottom surface thereof.

The lens, wherein, the top surface center of the lens body is sunken towards the bottom surface thereof.

The lens, wherein, the bottom surface of lens body is sunken to its top surface and is formed the holding tank.

The lens, wherein, the breach is triangle-shaped breach, the apex angle of triangle-shaped breach is towards the center of lens body.

The vertex angle of the triangular notch is 5-95 degrees.

The lens is characterized in that the vertex angle and the bottom angle of the triangular notch are provided with draft angles.

The lens, wherein, the breach is the arc breach.

A lighting device comprising a lens as described in any above.

The utility model provides a display module assembly, its includes the PCB board, a plurality of lamp pearls and a plurality of as above arbitrary lens, the lamp pearl sets up on the PCB board, lens with lamp pearl one-to-one, and set up lamp pearl top, each row the breach of lens all is located a straight line.

A display device comprises the display module.

Has the advantages that: after lens and lamp pearl cooperation installation, the light quantity that the breach department sent reduces, and makes most light to the regional concentration in breach both sides for when a plurality of lamp pearls were installed in a row, the regional light quantity of light overlap between two adjacent lamp pearls reduces, and luminance weakens, weakens central zone and marginal area's luminance difference when lens outgoing light promotes display module's visual effect homogeneity.

Drawings

FIG. 1 is a first view of a lens according to the present invention;

FIG. 2 is a second view of the lens of the present invention;

FIG. 3 is a schematic structural view of the lens according to the present invention when the notch is a triangular notch;

fig. 4 is a schematic view of the assembly of the PCB board and the lamp bead in the present invention;

fig. 5 is an assembly diagram of the PCB board, the lamp bead and the lens in the present invention;

fig. 6 is a schematic structural diagram of the display module according to the present invention;

fig. 7 is a schematic structural diagram of the display device according to the present invention;

fig. 8 is a schematic view of the light distribution of the lens and the lamp bead after the assembly of the present invention;

fig. 9 is the utility model discloses in lens with the lamp pearl is assembled the back light brightness value and is changed the schematic diagram.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Please refer to fig. 1-9. The utility model provides a lens, as shown in fig. 1 and 2, it includes lens body 1, lens body 1 includes top surface 11, bottom surface 12 and side 13, side 13 is located top surface 11 with between the bottom surface 12, and respectively with the edge of top surface 11 with the edge connection of bottom surface 12. The cross section of the lens body 1 is circular, further, the symmetry is provided with the breach 2 on the lens body 1, the breach 2 certainly the side 13 of lens body 1 extends to its central department, breach 2 follow the top surface of lens body runs through to the bottom surface of lens body. Every lamp pearl top all sets up lens, and make two the line direction of breach 2 sets up along the array direction of one row of lamp pearl on the PCB board, promptly lens and lamp pearl cooperation installation back, the light quantity that breach department sent reduces, and makes most light direction 2 both sides region is concentrated. When a plurality of lamp beads are installed in a row, the quantity of light rays in a light ray overlapping area between every two adjacent lamp beads is reduced, the brightness is weakened, the brightness difference between a central area and an edge area when the light rays are emitted from the lens is reduced, and the visual effect uniformity of the display module is improved. When lens improve its lighting device's that corresponds visual effect, alright in order to reduce the quantity of lamp pearl to reduction in production cost.

As shown in fig. 8, taking the example that the lens is mounted on one lamp bead (no other lamp beads are arranged around the lens), the brightness of the light emitted by the lens is displayed, wherein it is obvious that the brightness of the light at the triangular notches on the left and right sides is small, and the brightness of the light in the area between the two triangular notches is strong. As shown in fig. 9, fig. 9 is used to show the variation of the brightness value of the light emitted from the lens, and it is obvious that the brightness value of the light at the center of the lens is the highest, and the brightness value of the light is smaller as the light is closer to the triangular notch areas at the left and right sides.

As shown in fig. 4 and 5, specifically, when the lens is mounted on the PCB 4, the plurality of lamp beads 5 are arranged along a horizontal line, and then one lens is disposed above each lamp bead 5, and the left notch of the lens above each lamp bead 5 faces the left adjacent lamp bead, and the right notch of the lens above each lamp bead 5 faces the right adjacent lamp bead.

In the present invention, as shown in fig. 1, the center of the top surface 11 of the lens body 1 is recessed toward the bottom surface 12 thereof, so that the thickness of the center of the lens body 1 is the smallest, and the thickness of the lens body 1 gradually increases from the center thereof to the side surface 13 thereof. Through the reflection and refraction of the top surface 11, the light rays emitted upwards from the bottom surface 12 of the lens body 1 can be uniformly distributed to the areas except the gap, so that the phenomenon that the central area is too bright due to the fact that light beams are concentrated in the center of the lens body 1 is avoided.

Further, in the present invention, as shown in fig. 2, the bottom surface 12 of the lens body 1 is recessed toward the top surface 11 thereof to form an accommodating groove 3, and the accommodating groove 3 is used for accommodating a lamp bead; preferably, the accommodating groove 3 is located on the central axis of the lens body 1, and the sum of the depth of the accommodating groove 3 and the depth of the top surface 11 of the lens body 1 recessed toward the bottom surface 12 thereof is smaller than the overall thickness of the lens body 1. The degree of depth of holding tank 3 is greater than the height of lamp pearl for the lamp pearl can place completely in the holding tank 3, thereby makes lens body 1 can cover all play plain noodles of lamp pearl to receive all light that the lamp pearl sent, promote lens turn into the area source as big as possible to lamp pearl emission's even effect, make full use of lamp pearl's light efficiency.

In a preferred embodiment, as shown in fig. 3, the notch of the present invention is a triangular notch, the vertex angle of the triangular notch faces the center of the lens body 1, and the center of the lens body 1 is located on the connecting line between the vertices of the two triangular notches; the central lines of the vertex angles of the two triangular notches are positioned on the same straight line.

Further, the size of the vertex angle of the triangular notch can directly influence the quantity of light rays in the triangular notch, and when the vertex angle of the triangular notch is larger, the quantity of light rays in the triangular notch is smaller, and the light rays on two sides of the triangular notch are increased; when the vertex angle of the triangular gap is smaller, the number of light rays in the triangular gap is larger, and the light rays on two sides of the triangular gap are reduced. Preferably, the vertex angle of the triangular notch is 5-95 degrees, if the vertex angle of the triangular notch is less than 5 degrees, the vertex angle of the triangular notch is too small, light rays in the triangular notch are too concentrated, and the brightness difference between the left side and the right side of the lamp bead, the front side and the rear side of the lamp bead and the central area cannot be weakened; if the vertex angle of the triangular notch is larger than 95 degrees, the vertex angle of the triangular notch is too large, almost no light rays exist in the triangular notch, all light rays are completely concentrated in an area between the two triangular notches, the brightness of the left side and the right side of the lamp bead is weak, and the brightness of the front side, the rear side and the central area of the lamp bead is too strong, so that the brightness difference is caused, and the uniformity of the lighting effect is influenced. Therefore, the utility model discloses in for guaranteeing the light efficiency homogeneity, the apex angle of triangle-shaped breach can be selected between 5 ~95 to select according to actual light efficiency difference size the apex angle size of triangle-shaped breach.

During specific application, can select according to controlling the interval size between two adjacent lamp pearls the size of the apex angle of triangle-shaped breach, for example: if the distance between the left and right adjacent two lamp beads is larger, the brightness of the light ray overlapping area between the two lamp beads is weaker, the quantity of light rays in the triangular notch does not need to be reduced too much, and the triangular notch with the smaller vertex angle can be selected at the moment. If the interval between two adjacent lamp pearls is less about, then the luminance in light overlapping region is stronger between two lamp pearls, needs the reduction as far as possible the quantity of light in the triangle-shaped breach can be selected to the triangle-shaped breach that has great apex angle this moment, makes the triangle-shaped breach can influence more light, with more light to the front and back and the central zone diffusion of lamp pearl, weakens the luminance between two adjacent lamp pearls.

Further, on the premise that the width of the bottom side of the triangular notch is constant, the vertex position of the triangular notch can be changed, and the connecting line between the vertex of the triangular notch and the center of the lens body 1 moves towards the center of the lens body 1 (at this time, the vertex angle of the triangular notch becomes smaller), or moves away from the center of the lens body 1 (at this time, the vertex angle of the triangular notch becomes larger).

Therefore the utility model discloses in for the adaptation about the difference of the interval between two adjacent lamp pearls, can be under the unchangeable prerequisite of the base width of confirming the triangle-shaped breach, with the summit position of triangle-shaped breach along its with the center line direction of lens body 1 carries out distance change far and near, thereby changes the size of the apex angle of triangle-shaped breach, according to the interval between two adjacent lamp pearls, adaptability adjustment light quantity in the triangle-shaped breach guarantees the light efficiency homogeneity.

The top angle and the bottom angle of the triangular notch are provided with draft angles so as to facilitate die opening; the draft angle of the top angle of the triangular notch is 0.1-1 degree, and the draft angle of the bottom angle of the triangular notch is 2-10 degrees.

In a second preferred embodiment, as shown in fig. 1, the notch is an arc-shaped notch, which facilitates mold opening, and the arc-shaped notch has no folded edge, so that the arc-shaped notch can achieve a light-homogenizing effect substantially the same as the triangular notch.

The utility model also provides a lighting device, it includes above-mentioned embodiment lens.

The utility model also provides a display module assembly, it includes the lens of above-mentioned embodiment, as shown in fig. 6, it still includes backplate 101, reflector plate 102, diffuser plate 103 and the brightness enhancement piece 104 that set gradually from bottom to top; backplate 101 is provided with PCB board 105, PCB board 105 is located reflector plate 102 with between the backplate 101, a plurality of lamp pearls of having arranged according to the array on the PCB board 105, the lamp pearl with lens one-to-one all is provided with on every lamp pearl lens, the lamp pearl is located in holding tank 3, adjacent lamp pearl about two breachs on the lens body 1 are towards respectively, make each arrange the breach of lens all is located a straight line. The diffusion plate 103 is provided with a through hole, and the lens passes through the through hole and is disposed between the reflection sheet 102 and the diffusion plate 103.

The utility model also provides a display device, as shown in FIG. 7, it includes as above display module assembly.

To sum up, the utility model provides a lens, lighting device, display module assembly and display device, lens include the lens body, wherein, the symmetry is provided with the breach on the lens body, the breach certainly the side of lens body extends to its center department, the breach is followed the top surface of lens body runs through extremely the bottom surface of lens body. After lens and lamp pearl cooperation installation, the light quantity that the breach department sent reduces, and makes most light to the regional concentration in breach both sides for when a plurality of lamp pearls were installed in a row, the regional light quantity of light overlap between two adjacent lamp pearls reduces, and luminance weakens, weakens central zone and marginal area's luminance difference when lens outgoing light promotes display module's visual effect homogeneity.

It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. A lens comprises a lens body and is characterized in that notches are symmetrically arranged on the lens body, extend from the side face of the lens body to the center of the lens body, and penetrate from the top face of the lens body to the bottom face of the lens body.

2. The lens of claim 1, wherein the top surface of the lens body has a smaller diameter than the bottom surface of the lens body.

3. The lens of claim 1, wherein the lens body is recessed toward its bottom surface at a center of its top surface.

4. The lens of claim 1, wherein the bottom surface of the lens body is recessed toward the top surface thereof to form a receiving groove.

5. The lens of claim 1, wherein the notch is a triangular notch having a vertex toward a center of the lens body.

6. The lens of claim 5, wherein the triangular notch has an apex angle of 5 ° -95 °.

7. The lens of claim 5, wherein the triangular notch has draft angles at both the top and bottom corners.

8. The lens of claim 1, wherein the notch is an arcuate notch.

9. A lighting device characterized in that it comprises a lens according to any one of claims 1-8.

10. A display module is characterized by comprising a PCB, a plurality of lamp beads and a plurality of lenses according to any one of claims 1 to 8, wherein the lamp beads are arranged on the PCB, the lenses correspond to the lamp beads one by one and are arranged above the lamp beads, and the notches of each row of lenses are positioned on a straight line.

11. A display device comprising the display module according to claim 10.