CN107990175A - A kind of flexible LED rope light - Google Patents
A kind of flexible LED rope light Download PDFInfo
- Publication number
- CN107990175A CN107990175A CN201711258586.1A CN201711258586A CN107990175A CN 107990175 A CN107990175 A CN 107990175A CN 201711258586 A CN201711258586 A CN 201711258586A CN 107990175 A CN107990175 A CN 107990175A
- Authority
- CN
- China
- Prior art keywords
- fpcb plates
- conductor tracks
- metal conductor
- fpcb
- flexible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S4/00—Lighting devices or systems using a string or strip of light sources
- F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
- F21S4/22—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
- F21S4/24—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape of ribbon or tape form, e.g. LED tapes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0277—Bendability or stretchability details
- H05K1/028—Bending or folding regions of flexible printed circuits
- H05K1/0281—Reinforcement details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The embodiment of the invention discloses a kind of flexible LED rope light, it includes：At least two FPCB plates, at least two conductive main lines, at least one paster LED, electronic components are disposed with every FPCB plates, wherein, described at least two conductive main lines are at least two conductive copper pools for being laid in the FPCB plates bottom, the at least two FPCB plates are intervally arranged successively, and there are preset distance between adjacent FPCB plates；Insulating bag covering layer, is wrapped at least two FPCB plates；At least two parallel and spaced metal conductor tracks are further provided between at least two FPCB plates bottom and the insulating bag covering layer insulating bag covering layer, a flexible fixed bed is provided with least two metal conductor tracks lower parts.Implement the embodiment of the present invention, the mechanical strength of flexible light band can be improved, strengthen the conductive capability of flexible light band, the use length of light bar, and anti-bending performance can be improved.
Description
Technical field
The present invention relates to display field, more particularly to a kind of flexible LED rope light.
Background technology
As depicted in figs. 1 and 2, a kind of existing flexible LED rope light is shown, it is typically in flexible PCB（FPCB）
Circuit and conductive main line are provided with 4 ', passes through surface mounting technology on FPCB plates（SMT）It is welded with paster LED 3 ' and electronics
Component 2 '（Such as resistance）.
On specific LED light strip finished product, it is necessary in the flexibility for being welded with paster LED and electronic component 2 shown in Fig. 1
One layer of soft plastic material or layer of silica gel 5 ' are wrapped up on circuit board 4 ', to play the waterproof and dustproof shape different with formation and light
Effect is learned, concrete structure can be found in shown in Fig. 3.
But there are following shortcoming for existing this structure：
First, in process of production, in order to ensure the pliability of LED light bar, conductive copper pool cannot be too used by conductive main line
It is thick；Since conductive copper pool is relatively thin, its conductive capability is limited, if causing light bar to access power supply from one end, what it was used continuously
Length is restricted because of the problem of pressure drop of conductive main line, this brings very big problem to the engineer application of the product；
Meanwhile the intensity of flexible circuit plate stretching and bend resistance is low, it is easy that existing flexible LED rope light exists in engineering construction
The situation for being subject to mechanical destruction and causing product to be unable to normal use.
The content of the invention
The technical problems to be solved by the invention are, there is provided a kind of flexible LED rope light, can improve the machine of flexible light band
Tool intensity and bend resistance ability, and the conductive capability of enhancing flexible light band, so as to improve the use length of light bar.
In order to solve the above-mentioned technical problem, the embodiment of the present invention provides a kind of flexible LED rope light, it includes：
At least two FPCB plates, at least two conductive main lines, at least one paster LED, electronics member are disposed with every FPCB plates
Part, wherein, at least two conductive main lines are at least two conductive coppers pools for being laid in the FPCB plates bottom, it is described at least
Two FPCB plates are intervally arranged successively, and there are preset distance between adjacent FPCB plates；
Insulating bag covering layer, is wrapped at least two FPCB plates；
At least two are further provided between at least two FPCB plates bottom and the insulating bag covering layer insulating bag covering layer
The parallel and spaced metal conductor tracks of bar, a flexible fixed bed is provided with least two metal conductor tracks lower parts.
Wherein, between at least two parallel metal conductor tracks there are gap, and each metal conductor tracks upper surface
It is exposed, and be close to the conductive copper pool of every FPCB plates bottom respectively, respectively with one on every FPCB plates conductive main line
It is electrically connected.
Wherein, two conductive coppers pool of every FPCB plates bottom is led by a solder joint and two metals respectively
Electric band mutually welds, and the line between solder joint on two conductive coppers pool of every FPCB plates bottom is led with two metals
Electric strip length direction is vertical.
Wherein, at least one complete circuit unit is disposed with every FPCB plates.
Wherein, at least two metal conductor tracks are the alloy strip of copper strips, aluminium strip, steel band or above-mentioned material, described exhausted
Edge wrapping layer is soft plastic layer or layer of silica gel.
Wherein, it is adhesive tape or layer of silica gel to state flexible fixed bed.
Wherein, it is provided between two metal conductor tracks and is dielectrically separated from component.
Wherein, the flexible fixed bed is adhesive tape or layer of silica gel, and the component that is dielectrically separated from is a plastic strip.
Wherein, the flexible fixed bed is layer of silica gel, and the component that is dielectrically separated from is layer of silica gel, described to be dielectrically separated from component
It is made of one piece with the flexible fixed bed.
Implement the embodiment of the present invention, have the advantages that：
First, the present invention in the FPCB plates of flexible LED rope light by being arranged with least two metal conductor tracks and flexibility admittedly
Given layer, can improve the mechanical strength of flexible LED rope light；
Simultaneously as two metal conductor tracks upper surfaces are close to the conductive copper pool under FPCB plates respectively, equivalent to having added
The current carrying area of effect, so as to it is single-ended enter electricity in the case of, make line drop smaller, so that flexible LED rope light is continuous
The length used is longer；
Further, since the present invention is arranged in order and spaced FPCB plates using at least two, due to adjacent FPCB plates it
Between be provided with certain intervals, the buckle resistance of lamp bar can be improved, in bending, at utmost protect element on FPCB plates not
It is damaged.Further, since each section of FPCB plate is independent, even if damage occurs in wherein one section of FPCB（Such as occur all
Bent as light bar meets with mistake, the situation that distortion causes flexible PCB to be broken）, the normal of other section of FPCB plate will not be influenced
Work.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the assembly structure diagram of the FPCB plates of existing flexible LED rope light；
Fig. 2 is the corresponding circuit diagrams of Fig. 1；
Fig. 3 is the sectional view after Fig. 1 packaging insulating wrapping layers；
Fig. 4 is a kind of sectional view of the first embodiment of flexible LED rope light provided by the invention；
Fig. 5 is the matching relationship schematic diagram between FPCB plates in Fig. 4, metal conductor tracks and flexible fixed bed；
Fig. 6 is the assembling schematic diagram in one embodiment of Fig. 5；
Fig. 7 is the assembling schematic diagram in another embodiment of Fig. 5；
Fig. 8 is the circuit diagram in a kind of one embodiment of flexible LED rope light provided by the invention；
Fig. 9 is a kind of sectional view of the second embodiment of flexible LED rope light provided by the invention；
Figure 10 is the structure diagram that metal conductor tracks and flexible fixed bed are fixed in Fig. 9.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clearly complete
Ground describes, it is clear that described embodiment is only the part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art obtained on the premise of creative work is not made it is all its
Its embodiment, belongs to the scope of protection of the invention.
Here, it should also be noted that, in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings only
Show the structure and/or processing step closely related with scheme according to the present invention, and eliminate little with relation of the present invention
Other details.
As shown in figure 4, show a kind of sectional view of the first embodiment of flexible LED rope light provided by the invention, at the same time
In the lump with reference to shown in Fig. 5-Fig. 8.In this embodiment, the flexible LED rope light, it includes：
At least two FPCB plates 4, on every FPCB plates on be disposed with least two conductive main lines, at least one paster LED 3 with
And electronic component 2（Such as resistance）, wherein, described at least two conductive main lines are be laid in the FPCB plates bottom at least two
Conductive copper is moored, and at least two FPCB plates 4 are intervally arranged successively, and there are preset distance between adjacent FPCB plates 4（Such as Fig. 5
In d, it can be with such as 1mm）；Wherein, the connection relation between conductive main line, paster LED and electronic component is referred to
Fig. 1 hereinbefore and the content of Fig. 2；
Insulating bag covering layer 5, is wrapped at least two FPCB plates 4, and the insulating bag covering layer 5 is soft plastic layer or silica gel
Layer, wherein soft plastic layer can use the materials such as PVC, PU or TPU, TPR；
Wherein, at least two are further provided between at least two FPCB plates, 4 bottom and the insulating bag covering layer 5 to put down
Capable and spaced metal conductor tracks 7（It is illustrated as two）, it is provided with least two 7 lower parts of metal conductor tracks
One flexible fixed bed, in this example embodiment, which is a layer of silica gel 6, and the layer of silica gel 6 is to two metal conductor tracks
7 lower parts are partly wrapped.
Wherein, between at least two parallel metal conductor tracks 7 there are gap, and 7 upper table of each metal conductor tracks
Face is exposed, and is close to the conductive copper pool of every 4 bottom of FPCB plates respectively, conductive main with one on every FPCB plates respectively
Line is electrically connected.
As shown in fig. 6, in one embodiment, every FPCB plates 4 be placed directly in the metal conductor tracks 7 it
On, then wrapped by insulating bag covering layer 5, wherein, the conductive copper pool of the downside of FPCB plates 4 is straight with metal conductor tracks 7
Contact, which is realized, to be electrically connected；When providing power to metal conductor tracks 7, the FPCB plates 4 in face disposed thereon can work normally.
As shown in fig. 7, in another embodiment, two conductive coppers pool of every 4 bottom of FPCB plates passes through respectively
One solder joint 40 is welded with two metal conductor tracks, 7 phase, the weldering on two conductive coppers pool of every 4 bottom of FPCB plates
Line between point 41 is vertical with two metal conductor tracks, 7 length direction.In this way, can further improve FPCB plates 4 with
Fixed routine between metal conductor tracks 7, further, since line and two metal conductor tracks, 7 length between solder joint 41
Direction is vertical, even if in use, which also can guarantee that FPCB plates 4 and metal conductor tracks 7 in bending
Between will not there is a phenomenon where misplace.
It is understood that in an embodiment of the present invention, two metallic conductions 7 be provided with between insulation every
From component 70, specifically, in one example, the component 70 that is dielectrically separated from is layer of silica gel, it is described be dielectrically separated from component 70 with
The flexibility fixed bed（Layer of silica gel 6）It is made of one piece；Two metals are led so as to which the layer of silica gel 6 can be realized
Electric 7 lower part of band is partly wrapped.It is understood that in some other examples, this is dielectrically separated from component 70 and also may be used
Using with the flexible fixed bed as component independently.
Preferably, in one example, the width of at least two parallel metal conductor tracks 7 and mutual spacing with
The width and spacing of at least two conductive coppers pool of 4 bottom of FPCB plates are wide, it is possible to understand that foregoing description it is non-for limitation,
In actual example, width therein can be adjusted accordingly.
Also, it is understood that in every FPCB plates 4, at least one element circuit can be set, as shown in figure 8,
Show an example, it is provided with two element circuits in every FPCB plates 4.It is understood that due to each
Element circuit in FPCB plates is independently arranged, when an element circuit in a certain FPCB plates 4 is destroyed, then only this
Element circuit does not work, and the element circuit in other FPCB plates 4 will not be impacted.
Specifically, at least two metal conductor tracks 7 can be the alloy strip of copper strips, aluminium strip, steel band or above-mentioned material.
Correspondingly, as shown in Figure 9 and Figure 10, the structure diagram of the second embodiment of the present invention is shown.Second reality
Applying the first embodiment that example and Fig. 4 are shown into Fig. 8 maximum, difference lies in wherein flexible fixed bed be an adhesive tape 8, this is glued
Two metal conductor tracks 7 are fixed adhesive tape 8；It is provided with two metallic conductions 7 between and is dielectrically separated from component 70,
The component 70 that is dielectrically separated from is a plastic strip, its bottom surface is fixed with 8 phase of adhesive tape；Other structures and principle and Fig. 4
Shown to Fig. 8 it is identical in first embodiment, herein without be described in detail.
Implement the embodiment of the present invention, have the advantages that：
First, the present invention is fixed with flexibility by being arranged with least two metal conductor tracks in the FPCB plates of flexible LED rope light
Layer, can improve the mechanical strength of flexible LED rope light；
Simultaneously as at least two metal conductor tracks upper surfaces are close to the conductive copper pool under FPCB plates respectively, equivalent to increase
Effective current carrying area, so as to it is single-ended enter electricity in the case of, make line drop smaller, so that flexible LED rope light
The length of continuous use is longer；
Further, since the present invention is arranged in order and spaced FPCB plates using at least two, due to adjacent FPCB plates it
Between be provided with certain intervals, the buckle resistance of lamp bar can be improved, in bending, at utmost protect element on FPCB plates not
It is damaged.Further, since each section of FPCB plate is independent, even if damage occurs in wherein one section of FPCB（Such as occur all
Bent as light bar meets with mistake, the situation that distortion causes flexible PCB to be broken）, the normal of other section of FPCB plate will not be influenced
Work.
The above is only the embodiment of the application, it is noted that for the ordinary skill people of the art
For member, on the premise of the application principle is not departed from, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as the protection domain of the application.
Claims (9)
1. a kind of flexible LED rope light, it is characterised in that it includes：
At least two FPCB plates, at least two conductive main lines, at least one paster LED, electronics member are disposed with every FPCB plates
Part, wherein, at least two conductive main lines are at least two conductive coppers pools for being laid in the FPCB plates bottom, it is described at least
Two FPCB plates are intervally arranged successively, and there are preset distance between adjacent FPCB plates；
Insulating bag covering layer, is wrapped at least two FPCB plates；
At least two are further provided between at least two FPCB plates bottom and the insulating bag covering layer insulating bag covering layer
The parallel and spaced metal conductor tracks of bar, a flexible fixed bed is provided with least two metal conductor tracks lower parts.
A kind of 2. flexible LED rope light as claimed in claim 1, it is characterised in that at least two parallel metallic conductions
There are gap between band, and each metal conductor tracks upper surface is exposed, and is close to a conduction of every FPCB plates bottom respectively
Copper is moored, and is electrically connected respectively with a conductive main line on every FPCB plates.
3. a kind of flexible LED rope light as claimed in claim 2, it is characterised in that two of every FPCB plates bottom lead
Electrolytic copper pool is mutually welded by a solder joint and two metal conductor tracks respectively, two conductions of every FPCB plates bottom
The line between solder joint on copper pool is vertical with two metal conductor tracks length directions.
4. a kind of flexible LED rope light as claimed in claim 3, it is characterised in that be disposed with least one on every FPCB plates
A complete circuit unit.
5. a kind of flexible LED rope light as claimed in claim 4, it is characterised in that at least two metal conductor tracks are copper
Band, aluminium strip, the alloy strip of steel band or above-mentioned material, the insulating bag covering layer is soft plastic layer or layer of silica gel.
6. such as a kind of flexible LED rope light of claim 1 to 5 any one of them, it is characterised in that it is viscose glue to state flexible fixed bed
Band or layer of silica gel.
7. as right wants a kind of flexible LED rope light of 1 to 5 any one of them, it is characterised in that in two metal conductor tracks
Between be provided with and be dielectrically separated from component.
8. a kind of flexible LED rope light as claimed in claim 7, it is characterised in that the flexibility fixed bed is adhesive tape or silicon
Glue-line, the component that is dielectrically separated from is a plastic strip.
9. a kind of flexible LED rope light as claimed in claim 7, it is characterised in that the flexibility fixed bed is layer of silica gel, described
It is layer of silica gel to be dielectrically separated from component, and the component that is dielectrically separated from is made of one piece with the flexible fixed bed.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711258586.1A CN107990175A (en) | 2017-12-04 | 2017-12-04 | A kind of flexible LED rope light |
| CN201820515549.8U CN208154171U (en) | 2017-12-04 | 2018-04-12 | A kind of flexible LED rope light |
| CN201810325071.7A CN108386749A (en) | 2017-12-04 | 2018-04-12 | A kind of flexible LED rope light |
| ZA2018/02598A ZA201802598B (en) | 2017-12-04 | 2018-04-19 | A flexible led light strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711258586.1A CN107990175A (en) | 2017-12-04 | 2017-12-04 | A kind of flexible LED rope light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107990175A true CN107990175A (en) | 2018-05-04 |
Family
ID=62035418
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711258586.1A Pending CN107990175A (en) | 2017-12-04 | 2017-12-04 | A kind of flexible LED rope light |
| CN201810325071.7A Pending CN108386749A (en) | 2017-12-04 | 2018-04-12 | A kind of flexible LED rope light |
| CN201820515549.8U Expired - Fee Related CN208154171U (en) | 2017-12-04 | 2018-04-12 | A kind of flexible LED rope light |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810325071.7A Pending CN108386749A (en) | 2017-12-04 | 2018-04-12 | A kind of flexible LED rope light |
| CN201820515549.8U Expired - Fee Related CN208154171U (en) | 2017-12-04 | 2018-04-12 | A kind of flexible LED rope light |
Country Status (2)
| Country | Link |
|---|---|
| CN (3) | CN107990175A (en) |
| ZA (1) | ZA201802598B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799936A (en) * | 2018-06-27 | 2018-11-13 | 芜湖纯元光电设备技术有限公司 | A kind of LED module light source board of bend-resistance |
| CN111256057A (en) * | 2020-01-21 | 2020-06-09 | 重庆慧库科技有限公司 | Lamp belt |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990175A (en) * | 2017-12-04 | 2018-05-04 | 惠州科利尔光电有限公司 | A kind of flexible LED rope light |
| CN112584612A (en) * | 2019-09-27 | 2021-03-30 | 王定锋 | Double-layer circuit board manufactured by combining single-layer circuit board to flat cable and manufacturing method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202253081U (en) * | 2011-09-09 | 2012-05-30 | 刘昌贵 | Lamp strip |
| DE102013206342B4 (en) * | 2012-05-18 | 2017-04-13 | Atex Co., Ltd | LED mounting circuit board, belt-type flexible LED light and LED lighting device taking advantage of these |
| CN203147434U (en) * | 2013-03-04 | 2013-08-21 | 刘昌贵 | Light-emitting diode (LED) strip with flexible printed circuit board |
| CN205746257U (en) * | 2016-05-12 | 2016-11-30 | 广州市五度光电科技有限公司 | A kind of LED lamp bar that can arbitrarily bend and shape |
| CN107990175A (en) * | 2017-12-04 | 2018-05-04 | 惠州科利尔光电有限公司 | A kind of flexible LED rope light |
-
2017
- 2017-12-04 CN CN201711258586.1A patent/CN107990175A/en active Pending
-
2018
- 2018-04-12 CN CN201810325071.7A patent/CN108386749A/en active Pending
- 2018-04-12 CN CN201820515549.8U patent/CN208154171U/en not_active Expired - Fee Related
- 2018-04-19 ZA ZA2018/02598A patent/ZA201802598B/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799936A (en) * | 2018-06-27 | 2018-11-13 | 芜湖纯元光电设备技术有限公司 | A kind of LED module light source board of bend-resistance |
| CN111256057A (en) * | 2020-01-21 | 2020-06-09 | 重庆慧库科技有限公司 | Lamp belt |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA201802598B (en) | 2018-12-19 |
| CN108386749A (en) | 2018-08-10 |
| CN208154171U (en) | 2018-11-27 |
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Application publication date: 20180504 |
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