CN212181840U - LED light-emitting module and display screen - Google Patents
LED light-emitting module and display screen Download PDFInfo
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- CN212181840U CN212181840U CN202020820760.8U CN202020820760U CN212181840U CN 212181840 U CN212181840 U CN 212181840U CN 202020820760 U CN202020820760 U CN 202020820760U CN 212181840 U CN212181840 U CN 212181840U
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- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 230000007423 decrease Effects 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 3
- 239000007943 implant Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000004020 luminiscence type Methods 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 22
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000003247 decreasing effect Effects 0.000 description 5
- 238000010030 laminating Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
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Abstract
The utility model relates to a technical field of display screen provides a LED light-emitting module and display screen, and wherein the LED light-emitting module includes: the lamp panel is provided with a light emitting surface, and an LED light source for emitting divergent light beams is arranged on the light emitting surface; the lens is arranged on the light emitting surface and provided with a light incoming surface and a light outgoing surface which are oppositely arranged in a first direction, the first direction is parallel to the optical axis of divergent light beams of the LED light source, and the refractive index inside the lens is gradually reduced along a second direction perpendicular to the first direction; divergent light beams of the LED light source enter the lens sheet from the light incident surface and are refracted and then emitted from the light emitting surface; the display screen is provided with the LED light-emitting module; the utility model provides a LED light-emitting module and display screen has following advantage: the internal refractive index of the lens sheet is gradually reduced along the second direction, the light rays at the upper visual angle enter the lens sheet and are sequentially refracted, the refraction angle of the light rays is gradually increased until the total reflection occurs, and the light rays at the upper visual angle of the LED light source are prevented from being wasted.
Description
Technical Field
The utility model relates to a technical field of display screen, more specifically say, relate to a LED light-emitting module and display screen.
Background
In the prior art, commercial LED display screen is generally installed in high-rise building, and the demand of the lower visual angle of LED display screen is obviously higher than the demand of the upper visual angle, and the light emitting surface of LED display screen is even luminous, and the light intensity distribution of upper, lower, left and right sides position is unanimous basically, therefore in the in-service use process, the luminous energy of visual angle has a large amount of wastes on the LED display screen.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a LED light-emitting module and display screen to solve the light energy at the last visual angle of the LED display screen that exists among the prior art and by extravagant technical problem.
In order to achieve the above object, the utility model discloses a technical scheme is a LED light emitting module, include:
the lamp panel is provided with a light emitting surface, and an LED light source for emitting divergent light beams is arranged on the light emitting surface; and
the lens sheet is arranged on the light emitting surface, the lens sheet is provided with a light incoming surface and a light outgoing surface which are oppositely arranged in a first direction, the first direction is parallel to the optical axis of divergent light beams of the LED light source, and the refractive index inside the lens sheet is gradually reduced along a second direction vertical to the first direction; and divergent light beams of the LED light source enter the lens sheet from the light incident surface, and are refracted and totally reflected to be emitted from the light emitting surface.
In one embodiment, the refractive index of the lens sheet ranges from 1.0 to 3.0.
In one embodiment, the portions of the lens sheet are equal in thickness.
In one embodiment, the lens sheet has a thickness of 1 to 1000 microns.
In one embodiment, the lens sheet is rectangular in cross-section.
In one embodiment, the lens sheet is a polymer composite.
In one embodiment, the lens sheet includes lens layers sequentially stacked along the second direction, and refractive indexes of two adjacent lens layers decrease progressively along the second direction.
In one embodiment, the lens sheet is an ion implant.
In one embodiment, the ion concentration of the ion implanter is sequentially decreased or increased along the second direction.
Another object of the present invention is to provide a display screen, which includes a substrate and the LED light emitting module.
The utility model provides a beneficial effect of LED light-emitting module and display screen lies in:
the LED light source emits divergent light, wherein the divergent light comprises light rays at an upper visual angle and light rays at a lower visual angle, the lens sheet is arranged on the light emitting surface, the internal refractive index of the lens sheet is gradually reduced along the second direction, the light rays at the upper visual angle enter the lens sheet, refraction is sequentially performed, the refraction angle of the light rays is gradually increased along with the gradual reduction of the refractive index, until total reflection occurs, the light rays at the lower visual angle are finally changed, and the light rays at the upper visual angle of the LED light source are prevented from being wasted.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described 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 that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a three-dimensional structure diagram of an LED lighting module according to an embodiment of the present invention;
fig. 2 is an exploded view of a viewing angle of an LED lighting module according to an embodiment of the present invention;
fig. 3 is an exploded view of another view angle of the LED lighting module according to the embodiment of the present invention;
fig. 4 is a left side view of the LED light emitting module according to the embodiment of the present invention.
The figures are numbered:
1-a lamp panel; 2-a light emitting surface; 3-a lens sheet; 31-a lens layer; 4-a light incident surface; 5-a light-emitting surface; 10-a first direction; 20-a second direction; 6-LED light source; 61-diverging beam.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected or indirectly connected to the other element.
It will 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 an orientation or positional relationship indicated in the drawings for convenience in describing the invention, and are not intended to indicate that a device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as indicating a number of technical features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. The following describes the specific implementation of the present invention in more detail with reference to specific embodiments:
as shown in fig. 1 to 4, an embodiment of the present invention provides an LED light emitting module, including: a lamp panel 1 and a lens sheet; the lamp panel 1 is provided with a light emitting surface 2, the light emitting surface 2 is provided with an LED light source 6 for emitting divergent light beams, the divergent light beams mean that the sectional area of the light beams is continuously enlarged, and one light beam generated by one point light source is the divergent light beam; the lens sheet 3 is arranged on the light emitting surface 2, the lens sheet 3 is provided with a light incoming surface 4 and a light outgoing surface 5 which are oppositely arranged in a first direction 10, the first direction 10 is parallel to the optical axis of the divergent light beams of the LED light source 6, the refractive index inside the lens sheet 3 is gradually reduced along a second direction 20 which is perpendicular to the first direction 10, and the reduction trend can be linear or nonlinear; the divergent light beams from the LED light source 6 enter the lens sheet 3 through the light incident surface 4, and are refracted and emitted from the light emitting surface 5.
The light emitting principle of the LED light emitting module provided in this embodiment is as follows:
the LED light source 6 is arranged on the light-emitting surface 2 and emits divergent light beams 61, the divergent light beams 61 are emitted towards a plurality of directions and can be divided into light rays with an upper visual angle and light rays with a lower visual angle, namely the light rays emitted towards an oblique upper direction and the light rays emitted towards an oblique lower direction respectively, people can see the content of the display screen by depending on the light rays with the upper visual angle when looking down, and can see the content of the display screen by depending on the light rays with the lower visual angle when looking up; the existing commercial display screens are all arranged at the high position of a building, so most people look up the display screens, and therefore light rays at an upper visual angle cannot enter eyes of people, and light intensity of the light rays at the upper visual angle is wasted;
in this embodiment, the lens sheet 3 is used to convert the light of the upper viewing angle into the light of the lower viewing angle, so that the refractive index inside the lens sheet 3 gradually decreases along the second direction 20, so that the light of the upper viewing angle enters the lens sheet 3 from the light incident surface 4, and then sequentially enters the portion with the large refractive index of the lens sheet 3 into the portion with the small refractive index of the lens sheet 3 from the portion with the large refractive index of the lens sheet 3, the refraction angle of the light of the upper viewing angle continuously increases, and finally the incident angle reaches the condition of total reflection, and the light of the upper viewing angle is totally; further, since the light rays at the downward viewing angle enter the portion having the large refractive index from the portion having the small refractive index, the refraction angle gradually decreases, and the light rays at the downward viewing angle are continuously maintained.
It should be further explained that, when the light of the upper viewing angle needs to be converted into the light of the lower viewing angle, the refractive index inside the lens sheet 3 is sequentially reduced from the lower end to the upper end of the lens sheet 3 in the vertical direction, and when the light of the lower viewing angle needs to be converted into the light of the upper viewing angle, the refractive index inside the lens sheet 3 is sequentially reduced from the upper end to the lower end of the lens sheet 3 in the vertical direction, and the user can set the decreasing direction of the refractive index of the lens sheet 3 according to his own requirements.
In addition, the first direction 10 in this embodiment refers to an optical axis of the divergent light beam 61 of the LED light source 6, the divergent light beam 61 is bounded by the optical axis, and light rays above the optical axis are upward-viewing-angle light rays and are emitted obliquely upward; the light rays positioned below the optical axis are lower-view-angle light rays; and the second direction 20 is perpendicular to the first direction 10, and the second direction 20 is from a lower viewing angle to an upper viewing angle, the refractive index of the inside of the lens sheet 3 is gradually reduced along the second direction 20 to ensure that the light rays at the upper viewing angle can enter the portions with small refractive index from the portions with large refractive index in turn, so as to complete the conversion of the light rays.
The LED light-emitting module that this embodiment provided has:
the LED light source 6 emits divergent light, wherein the divergent light comprises light rays with an upper visual angle and light rays with a lower visual angle, the light emitting surface 2 is covered with the lens sheet 3, the internal refractive index of the lens sheet 3 is gradually reduced along the second direction 20, the light rays with the upper visual angle enter the lens sheet 3 and are sequentially refracted, the refraction angle of the light rays is gradually increased along with the gradual reduction of the refractive index until the total reflection occurs, the light rays with the lower visual angle are finally changed, and the light rays with the upper visual angle of the LED light source 6 are prevented from being wasted.
In one embodiment, the refractive index of the lens sheet 3 ranges from 1.0 to 3.0. In the present embodiment, the greater the refractive index of the lens sheet 3, the greater the ability to refract light, and the lens sheet 3 within the above refractive index range is easily obtained and has a better ability to refract light.
In one embodiment, the portions of the lens sheet 3 are equal in thickness. In this embodiment, the lens 3 adopts the mode of laminating to locate on lamp plate 1, and the lens 3 of thickness homogeneous more is favorable to the laminating technology, and lamp plate 1 can assemble a large amount of heats giving out light simultaneously, and the lens 3 of above-mentioned design can avoid each partial uneven thermal expansion and arouse to drop from lamp plate 1, causes life to shorten.
It should be further explained that the surface mount lamp and the conical lens of the LED display screen on the market are separated, the requirement of the installation process is high, and the accuracy is difficult to ensure; and the lens 3 of this embodiment adopts the mode of laminating, and lens 3 laminates in the paster lamp completely, and its installation can merge the packaging process at LED paster lamp, avoids the later stage to install the technological limitation of lens additional.
In one embodiment, the lens sheet 3 has a thickness of 1 to 1000 microns. It can be understood that a small number of traffic LED display screens in the market use a conical lens on the surface of a patch lamp, so that the light at the upper viewing angle is totally reflected on the upper surface of the conical lens, and the light at the upper viewing angle is converted into the light at the lower viewing angle. However, the above design has the following problems: 1. the volume of the conical lens is larger, the application on the LED display screen with large spacing is easier to realize at present, and the conical lens is difficult to be applied to the LED display screen products with smaller spacing; 2. the large-volume conical lens uses more optical materials and has high manufacturing cost. In the lens sheet 3 of the present embodiment, the minimum thickness can be 1 μm, which greatly reduces the volume and thickness of the lens sheet 3, improves the applicability, and reduces the manufacturing cost.
In one embodiment, the lens sheet 3 is rectangular in cross-section. It will be appreciated that the lens sheet 3 of the above-described design is easy to manufacture, which is advantageous in reducing manufacturing costs.
In one embodiment, the lens sheet 3 is a polymer composite. It can be understood that the lens sheet 3 is easy to manufacture and has a low manufacturing cost.
In one embodiment, the lens sheet 3 includes at least two lens layers 31 stacked one on another, and refractive indexes of the at least two lens layers 31 are sequentially decreased in the second direction 20. In the present embodiment, the lens sheet 3 is of a laminated design, and the lens sheet 3 is formed by laminating at least two lens layers 31 having different refractive indices. Preferably, the lens sheet 3 includes a plurality of lens layers 31, and refractive indexes of the plurality of lens layers 31 are sequentially decreased in the second direction 20. It can be understood that the lens sheet 3 is simple to manufacture and low in manufacturing cost.
In one embodiment, the lens sheet 3 is an ion implanter, and the ion concentration of the ion implanter is sequentially decreased or increased along the second direction 20; the ion concentration may be directly proportional or inversely proportional to the refractive index due to the material properties.
The embodiment also provides a display screen, which comprises a substrate and the LED light-emitting module.
The display screen provided with the LED light-emitting module has the function of improving the display light intensity, and the display efficiency is improved.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. An LED light module, comprising:
the lamp panel is provided with a light emitting surface, and an LED light source for emitting divergent light beams is arranged on the light emitting surface; the lens sheet is arranged on the light emitting surface and provided with a light incoming surface and a light outgoing surface which are oppositely arranged in a first direction, the first direction is parallel to the optical axis of divergent light beams of the LED light source, and the refractive index inside the lens sheet is gradually reduced along a second direction perpendicular to the first direction; and divergent light beams of the LED light source enter the lens sheet from the light incident surface, and are refracted and totally reflected to be emitted from the light emitting surface.
2. The LED luminescence module of claim 1, wherein the refractive index of the lens sheet ranges from 1.0 to 3.0.
3. The LED lighting module of claim 1, wherein the portions of the lens sheet are of equal thickness.
4. The LED light module as set forth in claim 1, wherein the lens sheet has a thickness of 1 to 1000 μm.
5. The LED light module as set forth in claim 1, wherein the lens sheet has a rectangular cross section.
6. The LED light module as set forth in claim 1, wherein the lens sheet is a polymer composite.
7. The LED light module as claimed in any one of claims 1 to 6, wherein the lens sheet comprises lens layers sequentially stacked along the second direction, and refractive indexes of two adjacent lens layers decrease progressively along the second direction.
8. The LED light module as claimed in any one of claims 1 to 6, wherein the lens sheet is an ion implant.
9. The LED light module as set forth in claim 8, wherein the ion concentration of the ion implant member decreases or increases sequentially along the second direction.
10. A display screen, comprising a substrate and the LED lighting module of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020820760.8U CN212181840U (en) | 2020-05-15 | 2020-05-15 | LED light-emitting module and display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020820760.8U CN212181840U (en) | 2020-05-15 | 2020-05-15 | LED light-emitting module and display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212181840U true CN212181840U (en) | 2020-12-18 |
Family
ID=73775351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020820760.8U Active CN212181840U (en) | 2020-05-15 | 2020-05-15 | LED light-emitting module and display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212181840U (en) |
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2020
- 2020-05-15 CN CN202020820760.8U patent/CN212181840U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000, 1st to 6th floors of Building A, 1st and 3rd floors of Building B, and 1st to 2nd floors of Building D in Yongwei Industrial Park, No. 118 Yongfu Road, Qiaotou Community, Fuhai Street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Yaham Optoelectronics Co.,Ltd. Country or region after: China Address before: 518000: floors 1-6, 1-2 and 3-4, building a, Yongwei Industrial Park, No. 118, Yongfu Road, Qiaotou community, Fuhai street, Bao'an District, Shenzhen, Guangdong Province Patentee before: YAHAM OPTOELECTRONICS Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |