CN109799566B - Anti-series light guide plate and light-emitting device - Google Patents
Anti-series light guide plate and light-emitting device Download PDFInfo
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- CN109799566B CN109799566B CN201910125719.0A CN201910125719A CN109799566B CN 109799566 B CN109799566 B CN 109799566B CN 201910125719 A CN201910125719 A CN 201910125719A CN 109799566 B CN109799566 B CN 109799566B
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- light guide
- guide plate
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- passageway
- channel
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- 230000001154 acute effect Effects 0.000 claims abstract description 5
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 239000002390 adhesive tape Substances 0.000 abstract description 47
- 230000000694 effects Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention relates to the field of light guide plates and discloses an anti-series light guide plate and a light-emitting device, wherein the anti-series light guide plate comprises at least two light guide plates and a connecting adhesive tape for connecting the light guide plates, the light-emitting device comprises a rubber shell, a circuit board and an LED assembly, the connecting part of the connecting adhesive tape and the light guide plates is positioned at the same side of each light guide plate, the connecting adhesive tape comprises a first channel and a second channel, one end of the first channel is connected with the light guide plate, the other end of the first channel is connected with the second channel, the first channel is a straight channel, and the included angle of the first channel and the second channel is an acute angle.
Description
Technical Field
The invention relates to the field of light guide plates, in particular to an anti-crosstalk light guide plate and a light-emitting device.
Background
In the existing luminous product with a plurality of luminous areas, the product relies on a plurality of light guide plates to finish the luminescence of different luminous areas, and in order to improve the assembly efficiency of the product, a plurality of light guide plates are generally connected together, and adjacent light guide plates are connected through small adhesive tapes, so that synchronous assembly can be realized when a plurality of light guide plates are assembled, and the time cost and the labor cost are saved. However, after the actual production and assembly, when the product emits light, the light-emitting area and the light-emitting area have a light-emitting phenomenon, namely when one light-emitting area emits light, light rays can enter the other light-emitting area through the adhesive tape, and the light-emitting effect of the product is affected. In view of this disadvantage, the prior art generally fully separates the light guide plate, and the process of fully separating the light guide plate itself is contrary to the original purpose of improving the assembly efficiency of the product, so that a light guide plate capable of preventing light from being mixed and a corresponding light emitting device thereof are needed, which can not only meet the requirement of preventing light from being mixed, but also not reduce the assembly efficiency thereof.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the anti-crosstalk light guide plate and the light-emitting device, wherein the anti-crosstalk light guide plate solves the problem of crosstalk light between adjacent light guide plates on the premise of keeping the assembly efficiency of the original adhesive tape design, and the light-emitting device solves the problem of crosstalk light between adjacent light guide plates of the original light-emitting device on the premise of keeping the assembly efficiency of the original adhesive tape design.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a prevent cluster light guide plate, includes two at least light guide plates and the connection adhesive tape of connecting the light guide plate, and the connection adhesive tape is located the homonymy of each light guide plate with the junction of light guide plate, and the connection adhesive tape includes first passageway and second passageway, and the one end and the light guide plate of first passageway are connected, and the other end is connected with the second passageway, and first passageway is sharp passageway, and the contained angle of first passageway and second passageway is the acute angle.
As a further improvement of the technical scheme, the included angle is theta, and theta is more than 0 degrees and less than or equal to 60 degrees.
As a further improvement of the technical scheme, the inner surface of the light guide plate is a rough surface, light rays are diffusely reflected in the light guide plate, and the light rays in the light guide plate are uniform.
As a further improvement of the technical scheme, after the light enters the first channel, the light is reflected on the inner wall of the second channel, and the light is reflected back to the first linear channel and is reflected back to the original light guide plate after being reflected by the inner wall of the first linear channel.
As a further improvement of the technical scheme, the connecting adhesive tape is connected with the adjacent light guide plates, and the symmetry axes between the adjacent light guide plates and the symmetry axes of the connecting adhesive tape connected with the adjacent light guide plates are coplanar.
As a further improvement of the technical scheme, the movement tracks of the light rays entering the connecting adhesive tape from the adjacent light guide plates are symmetrically distributed in a symmetrical axis.
As a further improvement of the technical scheme, the connecting adhesive tape further comprises third channels which are obliquely connected with the second channels at the two ends of the connecting adhesive tape respectively.
As a further improvement of the above technical solution, the third channel and the second channels at both ends form an "M" channel.
The light-emitting device comprises the anti-series light guide plate, a rubber shell, a circuit board and an LED assembly, wherein the anti-series light guide plate is arranged on the rubber shell, and the circuit board controls the LED assembly to emit light.
As a further improvement of the above technical solution, the LED assemblies are located on any side of the light guide plate, and a single light guide plate corresponds to a plurality of LED assemblies.
The beneficial effects of the invention are as follows:
the anti-crosstalk light guide plate provided by the invention enables light rays entering the connecting adhesive tape from one area to be reflected back to the original area of the light rays through changing the position and the shape of the connecting adhesive tape, and avoids the phenomenon of crosstalk light between adjacent light guide plates on the premise of keeping the adhesive tape design with higher assembly efficiency.
The light-emitting device provided by the invention utilizes the anti-light-crossing light guide plate, the light crossing phenomenon can not occur in the adjacent light-emitting areas, the design of the adhesive tape between the adjacent light guide plates in the prior art is reserved, and the assembly efficiency is high.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of a light emitting device in an ideal state;
FIG. 2 is a schematic diagram showing the connection of adjacent light guide plates in the prior art;
FIG. 3 is a schematic diagram of a prior art light emitting device;
FIG. 4 is a schematic diagram of the connection of an anti-crosstalk light guide plate according to an embodiment of the present invention;
fig. 5 is a schematic view of a light emitting device according to an embodiment of the present invention;
FIG. 6 is a schematic view of the optical path of a joint strip according to one embodiment of the present invention.
Detailed Description
The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, aspects, and effects of the present invention. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly or indirectly fixed or connected to the other feature. Further, the descriptions of the upper, lower, left, right, front, rear, etc. used in the present invention are merely with respect to the mutual positional relationship of the respective constituent elements of the present invention in the drawings.
Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any combination of one or more of the associated listed items.
In actual production, the interconnection relationship between the light guide plates is reflected on the connection state of the two adjacent light guide plates, so the embodiment provided by the invention is described by the interconnection relationship of the two light guide plates to reflect the situation of the light guide plates in actual production and installation.
Referring to fig. 1, a schematic diagram of a light emitting device in an ideal state is shown, in which a light guide plate 1 and a light guide plate 2 are completely isolated, the light guide plate 1 and the light guide plate 2 can emit light with different colors, and no interference is formed on the light guide plate 2 when the light guide plate 1 emits light, i.e., the light guide plate 1 and the light guide plate 2 are actually located in two spaces which are not interfered with each other at all. When the light guide plate 1 and the light guide plate 2 in the present figure are installed, the two light guide plates need to be installed in sequence, that is, two positioning is needed, the installation process is increased, and in actual production, the adjacent light guide plates need to be completely separated.
However, in order to ensure the efficiency of production and installation, the prior art generally connects a plurality of light guide plates together through a small adhesive tape, so that labor cost can be saved when assembling a plurality of light guide plates, and when facing different demands, it is also indispensable to cut the adhesive tape according to the number of the light guide plates to obtain a proper number of light guide plates, so that the product in an ideal state does not meet the actual demands of the product.
Referring to fig. 2, there is shown a schematic diagram of connection between adjacent light guide plates in the prior art, and it is obvious that there is a glue strip 21 connecting two light guide plates between the light guide plates 11 and 12, the glue strip 21 is a connection medium between a plurality of light guide plates, and in the case of a plurality of light guide plates exceeding 2 light guide plates, the plurality of light guide plates are arranged in parallel by means of the glue strip and only the glue strip positions are contacted.
Therefore, under the prior art condition described in fig. 2, the light guide plate is generally mounted as shown in fig. 3, and fig. 3 is a schematic structural view of a light emitting device in the prior art. The light guide plate 11 and the light guide plate 12 are connected by the adhesive tape 21 to form a light guide plate assembly, the light guide plate assembly is positioned in the adhesive shell 31, the circuit board 32 and the LED assembly 33 are integrated on the adhesive shell 31, the circuit board 32 controls the LED assembly 33 to emit light, and then the light emitted by the LED assembly 33 passes through the light guide plate to form different light emitting areas. The light guide plate 11 and the light guide plate 12 form different light emitting areas in actual operation, i.e., light passing through the light guide plate 11 is different from light passing through the light guide plate 12.
However, when the light guide plate 11 emits light due to the adhesive tape 21, light escapes through the adhesive tape into the light emitting region of the light guide plate 12, i.e., the shadow portion 13 in the drawing, affecting the light emitting effect of the whole product, a phenomenon called light crosstalk, in which light does not escape from the adhesive tape wall but escapes to the shadow portion 13. In the same way, the light guide plate 11 is affected when the light guide plate 12 emits light, and when the adhesive tape 21 exists, the phenomenon is unavoidable, but if the adhesive tape is removed, the assembly efficiency of the light guide plate is affected.
Referring to fig. 4, a schematic connection diagram of an anti-crosstalk light guide plate according to an embodiment of the present invention is shown, and compared with fig. 2 and 3, the positional relationship between the light guide plate 11 and the light guide plate 12 is unchanged, but the position and shape of the adhesive tape 21 are changed, so that a new connection adhesive tape 22 is formed, and the connection adhesive tape 22 is located on the same side of the light guide plate 11 and the light guide plate 12.
One end of the connecting adhesive tape 22 is connected with the light guide plate 11, the other end is connected with the light guide plate 12, and the symmetrical plane between the light guide plate 11 and the light guide plate 12 is the same plane as the symmetrical plane of the connecting adhesive tape 22 per se from the angle of fig. 4.
Referring to fig. 5, a schematic structural diagram of a light emitting device according to an embodiment of the present invention is shown, where a light guide plate 11 and a light guide plate 12 are embedded in a plastic housing 31, a circuit board 32 controls an LED assembly 33 to emit light, a connecting member of the light guide plate 11 and the light guide plate 12 is a connecting adhesive tape 22, the connecting adhesive tape 22 is located on the same side (lower side in the illustrated direction) of the light guide plate 11 and the light guide plate 12, and connecting positions of the connecting adhesive tape 22 and the light guide plate 11 and the light guide plate 12 are also located on the same side of the light guide plate 11 and the light guide plate 12. The light inside the light guide plate 11 is reflected back into the light guide plate 11 through the inner wall of the connecting adhesive tape 22, so that the occurrence of the light-string phenomenon is avoided, and the light inside the light guide plate 12 is also returned back into the light guide plate 12 based on the same principle.
The two channels in which the connection adhesive tape 22 is connected to the light guide plate 11 and the light guide plate 12 respectively are all channels in which light in the light guide plate may enter the connection adhesive tape 22, and the channel at the first light guide plate is taken as a first channel 221 as an example.
The movement of light within the connecting strip 22 is described below in connection with fig. 6, which is a schematic illustration of the light path of one embodiment of the connecting strip of the present invention. In fig. 6, the light ray entering the connecting adhesive tape 22 from the light guide plate 11 is a.
Since the symmetry axis between the light guide plate 11 and the light guide plate 12 is collinear with the symmetry axis of the connection adhesive tape 22, that is, the connection adhesive tape 22 itself is symmetrical about the broken line MN in the drawing, the left side portion of the broken line MN of the connection adhesive tape 22 belongs to the connection portion with the light guide plate 11, the right side portion of the broken line MN belongs to the connection portion with the light guide plate 12, and the movement of the light rays coming out of the light guide plate 11 and the light rays coming out of the light guide plate 12 in the connection adhesive tape 22 is mirrored about the broken line MN, which is illustrated in the left side of the broken line MN (that is, the connection side of the connection adhesive tape 22 with the light guide plate 11).
When the light ray a enters the first channel 221 and contacts the inner wall of the second channel 222 after moving to the end of the channel, the included angle between the second channel 222 and the first channel 221 is an acute angle, the light ray a is reflected at the inner wall of the second channel 222, the light ray reaching the second channel 222 is basically reflected back into the first channel 221 and then is reflected back into the light guide plate 11 for multiple times in the first channel 221, thus the light escaping from the light guide plate 11 is reflected back into the light guide plate 11, the occurrence of the light-crosstalk phenomenon is prevented, and the light loss is reduced.
In order to ensure that the reflection of light follows the expected trajectory, the first channel 221 and the second channel 222 have an acute angle, and the inner walls of the channels cannot be chamfered.
For better effect, θ is noted as the angle between the first channel 221 and the second channel 222, ensuring that θ is 0 ° < θ+.ltoreq.60°.
In this embodiment, the inner surfaces of the light guide plate 11 and the light guide plate 12 are each subjected to a concave-convex treatment or a roughening treatment, that is, the inner surface is roughened, so that light is diffusely reflected at the inner walls of the light guide plate 11 and the light guide plate 12, and the inner light of the light guide plate 11 and the light guide plate 12 is uniformly distributed.
Therefore, most of the light entering the connecting strip 22 from the light guide plate 11 and the light guide plate 12 is parallel to the side wall of the connecting strip 22, and is reflected back into the first channel 221 when reaching the second channel 222 along its direction, so that the light is reflected back into the original light guide plate area, but in practical cases, since the interface between the connecting strip 22 and the light guide plate 11 is sized, there is a part of the light (denoted as light b, not shown in the figure) which is not parallel to the side wall of the first channel when entering the first channel, and which is reflected back into the first channel when not entering the first channel, and which is reflected back into the first channel 221 when not entering the second channel 222. Therefore, a third channel 223 is added to the connecting adhesive tape 22, and the third channel 223 and the second channels 221 at two ends form an "M" channel.
One end of the second channel 222 is connected with the first channel 221, the other end of the second channel 222 is connected with the third channel 223, an included angle is formed between the third channel 223 and the second channel 222, light b firstly contacts with the side wall in the first channel 221 to be reflected repeatedly, and then the light b also reflects repeatedly in the second channel 222, and then the light b with very low intensity is completely lost by reflection at the included angle between the third channel 223 and the second channel 222 and the inside of the third channel 223, namely, the light b cannot influence the luminous effect, and the light b is unlikely to cross light.
Therefore, the position of the light source LED assembly 33 can be arbitrarily placed without being affected, the connecting adhesive tape 22 can be widely applied, and the number of channels of the connecting adhesive tape 22 can be increased to achieve the effect under the situation that the light emitting effect is strictly required.
While the invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions may be made therein without departing from the spirit of the invention and that these changes and substitutions are intended in the scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a prevent cluster light guide plate, its characterized in that includes two at least light guide plates and connects the joint strip of light guide plate, the joint strip with the joint position of light guide plate is located each the homonymy of light guide plate, the joint strip includes first passageway and second passageway, the one end of first passageway with the light guide plate is connected, the other end with the second passageway is connected, first passageway is sharp passageway, the contained angle of first passageway with the second passageway is the acute angle, contained angle is θ, θ satisfies 0 ° < θ and is less than 60 °, light entering first passageway after, the reflection takes place at the second passageway inner wall, light reflection returns to first straight line passageway after the inner wall reflection of first straight line passageway in the original light guide plate, the joint strip connects adjacent light guide plate, this adjacent light guide plate intersymmetry axis and with it is connected the symmetry axle center of joint strip, respectively from this adjacent light guide plate gets into the motion track of joint strip is with symmetry axle center symmetry distributes.
2. The anti-crosstalk light guide plate of claim 1, wherein the inner surface of the light guide plate is a roughened surface, light is diffusely reflected in the light guide plate, and light is uniform in the light guide plate.
3. The anti-crosstalk light guide plate according to claim 1, wherein the connection strip further comprises third channels, the third channels are respectively connected with the second channels at two ends of the connection strip in an inclined manner, and the third channels and the second channels at two ends form an M-shaped channel.
4. A light emitting device, comprising the anti-crosstalk light guide plate according to any one of claims 1 to 3, further comprising a plastic shell, a circuit board and an LED assembly, wherein the anti-crosstalk light guide plate is mounted on the plastic shell, and the circuit board controls the LED assembly to emit light.
5. The light emitting device of claim 4, wherein the LED assemblies are located on either side of the light guide plate, a single light guide plate corresponding to a plurality of the LED assemblies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910125719.0A CN109799566B (en) | 2019-02-20 | 2019-02-20 | Anti-series light guide plate and light-emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910125719.0A CN109799566B (en) | 2019-02-20 | 2019-02-20 | Anti-series light guide plate and light-emitting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109799566A CN109799566A (en) | 2019-05-24 |
| CN109799566B true CN109799566B (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910125719.0A Active CN109799566B (en) | 2019-02-20 | 2019-02-20 | Anti-series light guide plate and light-emitting device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202929236U (en) * | 2012-11-29 | 2013-05-08 | 京东方科技集团股份有限公司 | Light guide plate, backlight module group, and display apparatus |
| CN205943878U (en) * | 2016-07-20 | 2017-02-08 | 深圳正峰印刷有限公司 | Can improve button structure of optical crosstalk |
| CN206145505U (en) * | 2016-10-19 | 2017-05-03 | 广州市浩洋电子股份有限公司 | Prevent stage lamp of optical crosstalk |
| CN208090373U (en) * | 2018-04-08 | 2018-11-13 | 青岛亿联客信息技术有限公司 | A kind of touch device and lighting apparatus of lighting apparatus |
| CN209417337U (en) * | 2019-02-20 | 2019-09-20 | 兴国汇晨科技有限公司 | A kind of anti-optical crosstalk light guide plate and light emitting device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8154688B2 (en) * | 2008-05-26 | 2012-04-10 | Citizen Electronics Co., Ltd. | Planar light-emitting device and liquid crystal display apparatus |
| TWI481915B (en) * | 2013-08-20 | 2015-04-21 | Radiant Opto Electronics Corp | Light guide plate with multidirectional structures |
| US20160238777A1 (en) * | 2014-05-27 | 2016-08-18 | Radiant Opto-Electronics Corporation | Light guide plate ,light source module and display device |
-
2019
- 2019-02-20 CN CN201910125719.0A patent/CN109799566B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202929236U (en) * | 2012-11-29 | 2013-05-08 | 京东方科技集团股份有限公司 | Light guide plate, backlight module group, and display apparatus |
| CN205943878U (en) * | 2016-07-20 | 2017-02-08 | 深圳正峰印刷有限公司 | Can improve button structure of optical crosstalk |
| CN206145505U (en) * | 2016-10-19 | 2017-05-03 | 广州市浩洋电子股份有限公司 | Prevent stage lamp of optical crosstalk |
| CN208090373U (en) * | 2018-04-08 | 2018-11-13 | 青岛亿联客信息技术有限公司 | A kind of touch device and lighting apparatus of lighting apparatus |
| CN209417337U (en) * | 2019-02-20 | 2019-09-20 | 兴国汇晨科技有限公司 | A kind of anti-optical crosstalk light guide plate and light emitting device |
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| Publication number | Publication date |
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| CN109799566A (en) | 2019-05-24 |
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