CN107331319A - Lamp house cloth component and lamp box - Google Patents
Lamp house cloth component and lamp box Download PDFInfo
- Publication number
- CN107331319A CN107331319A CN201710625421.7A CN201710625421A CN107331319A CN 107331319 A CN107331319 A CN 107331319A CN 201710625421 A CN201710625421 A CN 201710625421A CN 107331319 A CN107331319 A CN 107331319A
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- China
- Prior art keywords
- lamp house
- house cloth
- layer
- light source
- lamp
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
The embodiment of the present invention provides a kind of lamp house cloth component and lamp box, and the lamp house cloth component includes lamp house cloth, the first holding sheet, the second holding sheet and the layer that expands with cold and contracts with heat；First holding sheet and second holding sheet are arranged at intervals to form a grasping part；The lamp house cloth and the layer that expands with cold and contracts with heat are overlapped and are connected in the grasping part.The present invention has each material layer for avoiding lamp house cloth because of the effect for separation of expanding with heat and contract with cold.
Description
Technical field
The present invention relates to lamp box technical field, more particularly to a kind of lamp house cloth component and lamp box.
Background technology
Lamp house cloth due to pliability is good, printing opacity uniform, long lifespan, the characteristic such as be easy to segmentation to install, be widely used in
The making of outdoor advertisement lighthouse.
Currently, outdoor advertisement lighthouse can show that businessman logo (logo, mutually tie by the literal name of enterprise, icon or both
A kind of mark of conjunction) information, to improve the identification of businessman.However, existing lamp house cloth is due to expanding with heat and contract with cold, easily
There is each material layer peeling-off, produce gap, influence display effect.
The content of the invention
The embodiment of the present invention provides a kind of lamp house cloth component and lamp box, and can improve prevents lamp house cloth due to expanding with heat and contract with cold
The effect of existing material layer separation.
The embodiment of the present invention provides a kind of lamp house cloth component, including lamp house cloth, the first holding sheet, the second holding sheet and cold
Swollen shrink wrap layer；
First holding sheet and second holding sheet are arranged at intervals to form a grasping part；
The lamp house cloth and the layer that expands with cold and contracts with heat are overlapped and are connected in the grasping part.
The embodiment of the present invention also provides a kind of lamp box, including framework and lamp house cloth component, and the lamp house cloth component is arranged on
On the framework, the lamp house cloth component is the lamp house cloth component described in any of the above-described.
The present invention is expanded with cold and contracted with heat layer by setting so that can with lamp house cloth when expanding with heat and contract with cold it is mutual with the layer that expands with heat and contract with cold
Offset, it is to avoid the phenomenon that the material layer of lamp house cloth is peeled off occur.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described.It should be evident that drawings in the following description are only some embodiments of the present invention, for
For those skilled in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is the first structural representation of lamp box provided in an embodiment of the present invention.
Fig. 2 is second of structural representation of lamp box provided in an embodiment of the present invention.
Fig. 3 is the third structural representation of lamp box provided in an embodiment of the present invention.
Fig. 4 is the 4th kind of structural representation of lamp box provided in an embodiment of the present invention.
Fig. 5 is the 5th kind of structural representation of lamp box provided in an embodiment of the present invention.
Fig. 6 is the 6th kind of structural representation of lamp box provided in an embodiment of the present invention.
Fig. 7 is a kind of sectional view of lamp house cloth component provided in an embodiment of the present invention.
Fig. 8 is the first sectional view of lamp house cloth provided in an embodiment of the present invention.
Fig. 9 is second of sectional view of lamp house cloth provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described.Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, the every other implementation that those skilled in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are, based on orientation shown in the drawings or position relationship, to be for only for ease of
The description present invention and simplified description, rather than indicate or imply that the device or element of meaning must have specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, and it is not intended that indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic.
Thus, " first " is defined, one or more feature can be expressed or be implicitly included to the feature of " second ".
In description of the invention, " multiple " are meant that two or more, unless otherwise specifically defined.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection or can mutually communicate；Can be joined directly together, can also be by between intermediary
Connect connected, can be connection or the interaction relationship of two elements of two element internals.For the ordinary skill of this area
For personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under "
Can directly it be contacted including the first and second features, it is not direct contact but by it that can also include the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " to include first special
Levy directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " fisrt feature that includes are immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to
Simplify disclosure of the invention, hereinafter the part and setting of specific examples are described.Certainly, they are only merely illustrative, and
And purpose does not lie in the limitation present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, between discussed various embodiments itself are not indicated and/or are set
Relation.In addition, the invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
The embodiment of the present invention provides a kind of lamp box.The lamp box can apply to outdoor large billboard, or applied to business
Shops of family, to transmit the information of businessman to user.
As shown in figure 1, lamp box 100 includes lamp house cloth component 10 and framework 20.Wherein, framework 20 can be by metal, modeling
Made by the material such as material or wooden boards.The exterior contour of framework 20 can be cuboid.In certain embodiments, framework 20
Exterior contour can also be the other shapes such as spheroid.
Lamp house cloth component 10 is arranged on framework 20.Wherein, lamp house cloth component 10 can be with a part of table of covering framework 20
Face.For example, when framework 20 is cuboid framework, lamp house cloth component 10 can be with a face of covering framework 20.
In certain embodiments, surface of the framework 20 covered with lamp house cloth component 10 can also set glassy layer.The glass
Lamp house cloth component 10 can be pressed on the surface of framework 20 by layer, while providing protective effect to lamp house cloth component 10.
In certain embodiments, as shown in Fig. 2 lamp box 100 also includes light source 30.Light source 30 is arranged on inside framework 20.
Light source 30 can be the light source of the species such as spot light, area source.Lamp house cloth component 10 has translucency.When in night or white
When its outside ambient light is dark, light source 30 is opened, with through lamp house cloth component 10 to external emission visible ray, so as to improve lamp
The visibility of case 100.
In certain embodiments, light source 30 can be the area source formed by multiple light emitting diodes.Light source 30 includes many
The individual light emitting diode 31 being intervally installed.The area source 30 of multiple light emitting diode formation parallel with lamp house cloth 10 can be set
Put.The light-emitting area of light source 30 is towards lamp house cloth component 10.
In certain embodiments, as shown in figure 3, light source 30 can be the area source formed by multiple light emitting diodes.Light
Source 30 includes multiple light emitting diodes 31 being intervally installed.The area source 30 of multiple light emitting diode formation can be arranged on
On the side wall of lamp box 100.That is, area source 30 and lamp house cloth component 10 are orthogonal.Light emitting diode 31 in light source 30 can
To set at an angle.For example, forming 30 degree of angles between light emitting diode 31 and plane residing for light source 30.Light source 30 is launched
Light towards lamp house cloth component 10.When in night or daytime, external environment condition light is dark, light source 30 is opened, to pass through
Lamp house cloth component 10 is to external emission visible ray, so as to improve the visibility of lamp box 100.
In certain embodiments, as shown in figure 4, light source 30 can be the area source formed by multiple light emitting diodes.Light
Source 30 includes multiple light emitting diodes 31 being intervally installed.Wherein, light source 30 can include parallel with lamp house cloth component 10
The Part I 301 of setting and with the vertically disposed Part II of lamp house cloth component 10 302.The light-emitting area of Part I 301
Towards lamp house cloth component 10.Light emitting diode 31 in Part II 302 can be set at an angle.For example, light-emitting diodes
30 degree of angles are formed between plane residing for pipe 31 and Part II 302.So that the light that Part II 302 is launched is also towards lamp box
Cloth component 10.
In certain embodiments, as shown in figure 5, lamp box 100 also includes control circuit 40.Circuit 40 is controlled to be arranged on framework
Inside 20.Wherein, control circuit 40 is connected with light source 30.Control circuit 40 is used to control light source 30 to open and close.For example, with
At the time of family can set the opening and closing of light source 30.When the time reaching default start-up time, the control control light of circuit 40
Open in source 30.So as to light source 30 through lamp house cloth 10 to external emission visible ray, so as to improve the visibility of lamp box 100.At that time
Between when reaching default close moment, the control control light source 30 of circuit 40 is closed, to save electric energy.
In certain embodiments, as shown in fig. 6, lamp box 100 also includes ambient light sensor 50.Ambient light sensor 50 is pacified
Inside framework 20.Ambient light sensor is referred to as ambient light sensor.Wherein, ambient light sensor 50 is used to examine
Survey external environment condition luminous intensity.
In certain embodiments, ambient light sensor 50 is connected with control circuit 40, and ambient light sensor 50 is detected
To ambient light intensity signal be input to control circuit 40 in.Wherein, control circuit 40 can include comparison circuit.This is more electric
Road is used to compare the signal of the input of ambient light sensor 50 and the size of preset signals.The ring detected when ambient light sensor 50
When border light intensity value is less than predetermined threshold value, represent that external environment condition is dark, now control the control light source 30 of circuit 40 to open；Work as environment
When the environmental light intensity angle value that optical sensor 50 is detected is more than or equal to the predetermined threshold value, represent that external environment condition is brighter, control electricity
The control light source 30 of road 40 is closed.
Wherein, predetermined threshold value can be the ambient light intensity numerical value pre-set.For example, predetermined threshold value can be
500.When the environmental light intensity angle value that ambient light sensor 50 is detected is less than 500, the control control light source 30 of circuit 40 is opened；When
When the environmental light intensity angle value that ambient light sensor 50 is detected is more than or equal to 500, the control control light source 30 of circuit 40 is closed.
In certain embodiments, lamp box 100 can be connected with background processor.Wherein, ambient light sensor 50, control electricity
Road 40 can be electrically connected to the processor.Ambient light sensor 50 sends the ambient brightness information detected to the processing
Device.A predetermined threshold value can be prestored in processor.The predetermined threshold value can be an environmental light intensity angle value.Work as processor
When judging that environment bright angle value is less than the predetermined threshold value, open signal is sent to control circuit 40, to control circuit 40
Control light source 30 is opened；When processor judges that environment bright angle value is more than or equal to the predetermined threshold value, to control circuit 40
Shutdown signal is sent, to cause the control control light source 30 of circuit 40 to close.
In certain embodiments, when light source 30 is opened, control circuit 40 is additionally operable to be detected according to ambient light sensor 50
Ambient brightness value control light source 30 luminous intensity.For example, when light source 30 is opened, control circuit 40 is according to ambient brightness value
Increase and gradually increase the luminous intensity of light source 30.
In certain embodiments, when light source 30 includes multiple light emitting diodes 31, control circuit 40 is according to ambient brightness value
The quantity for the light emitting diode lighted in control light source 30.For example, when light source 30 includes 200 light emitting diodes, controlling circuit
The quantity of 40 light emitting diodes that can be lighted according to the corresponding relation control shown in table 1：
Table 1
With reference to Fig. 7, Fig. 7 show the sectional view of lamp house cloth component 10 provided in an embodiment of the present invention.Wherein, the lamp house cloth
Component 10 includes lamp house cloth 10a, the first holding sheet 10b, the second holding sheet 10c, expand with cold and contract with heat layer 10d and elastic connection structure
10e。
Wherein, 10c layers of the clampings of the first holding sheet 10b and second are arranged at intervals to form a grasping part, the elastic connection
Structure 10e one end is connected with the first holding sheet 10b, and the elastic connection structure 10e other end is connected with the second holding sheet 10c.Lamp
Case cloth 10a and layer 10d that expand with cold and contract with heat are overlapped and are connected in grasping part.
The drift in directions of the elastic connection structure 10e along the clamping face perpendicular to the first holding sheet 10b is less than lamp
Case cloth 10a and layer 10d that expand with cold and contract with heat gross thickness；So that the first holding sheet 10b and the lamp house cloth 10a surface elastic are supported
Connect, the second holding sheet 10c is abutted with a surface elastic of layer 10d that expand with cold and contract with heat.
In certain embodiments, layer 10d that expand with cold and contract with heat includes metallic antimony and/or bismuth metal.
In certain embodiments, elastic connection structure 10e can be made of elastomeric material.
Fig. 7 is continued referring to, lamp house cloth 10a includes film layer 11, reflecting layer 12, substrate layer 13 and bed of cloth 14.
The film layer 11, reflecting layer 12, substrate layer 13 and bed of cloth 14 are cascading.
Wherein, film layer 11 is can be by the film of visible ray.The material of film layer 11 can be polyethylene, poly- third
The materials such as alkene, polyvinyl chloride, polystyrene or resin.Film layer 11 covers reflecting layer 12.Film layer 11 can be reflecting layer 12
Protective effect is provided.For example, film layer 11 can provide dustproof effect for reflecting layer 12, film layer 11 causes reflecting layer 12 to completely cut off
Air is so that reflecting layer 12 possesses corrosion proof function.In certain embodiments, film layer 11 can be transparent membrane.
In certain embodiments, toner can be added in film layer 11 so that film layer 11 show green or
The colors such as blueness.So as to which the overall colors of lamp house cloth 10a are also rendered as and the identical color of film layer 11.
The visible ray that reflecting layer 12 can be launched through the light source 30 inside lamp box 100.The material in reflecting layer 12 includes
Metal.Reflecting layer 12 can be arranged on by way of vacuum evaporation or vacuum magnetic-control sputtering on substrate layer 13, so that
Reflecting layer 12 possesses the reflecting effect to visible ray.When visible ray reflects in reflecting layer 12, lamp house cloth 10a surface is extremely
Metallic luster is presented less.Metallic luster refers to the gloss that the surface after medal polish is reflected.In certain embodiments, reflecting layer
12 material includes the metal to visible ray with high reflectance.Wherein, reflecting layer 12 can include in chromium, aluminium, silver, nickel
It is one or more.For example, reflecting layer 12 can be aluminium and the alloy of silver.In certain embodiments, it can also add in reflecting layer 12
Plus non-metallic material.
Substrate layer 13 can also pass through visible ray.Substrate layer 13 is the substrate needed for reflecting layer 12 provides attachment.At some
In embodiment, the material of substrate layer 13 is polyvinyl chloride.In certain embodiments, toner can be added in substrate layer 13,
So that substrate layer 13 shows and the identical color of film layer 11.When film layer 11 is transparent membrane, lamp house cloth 10a entirety
Color is rendered as and the identical color of substrate layer 13.
Bed of cloth 14 can pass through visible ray.The material of bed of cloth 14 can be fiber, polyester (terylene), polyamide (Buddhist nun
Dragon, also known as polyamide fibre), polyacrylonitrile (acrylic fibers), the material such as polyurethane (spandex).
Due to being provided with reflecting layer 12 in lamp house cloth 10a, therefore lamp house cloth 10a can reflect extraneous light, so that lamp box
Metallic luster can be presented in cloth 10a surfaces.When from the different angles outside lamp house cloth 10a, lamp house cloth 10a can show
The color effect of gradual change.
In certain embodiments, film layer 11, reflecting layer 12 and substrate layer 13 can be by binding agents with irreversible side
Formula bonds to form a light-transmissive film layer 15.Wherein, irreversibly refer to after the formation of light-transmissive film layer 15, can not isolate again thin
Film layer 11, reflecting layer 12 and substrate layer 13.
In certain embodiments, as shown in figure 8, being provided with adhesive layer 16 between film layer 11 and reflecting layer 12.Film
Layer 11 and reflecting layer 12 are bonded together by adhesive layer 16.Wherein, film layer 11, adhesive layer 16, reflecting layer 12 and
Substrate layer 13 bonds to form light-transmissive film layer 15.
In certain embodiments, as shown in figure 9, being provided with pressure sensitive adhesive 17 between light-transmissive film layer 15 and bed of cloth 14.Printing opacity
Film layer 15 is bonded to each other by pressure sensitive adhesive 17 with bed of cloth 14.
Lamp house cloth provided in an embodiment of the present invention and lamp box are described in detail above, it is used herein specifically individual
Example is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help and understands the present invention.
Simultaneously for those skilled in the art, according to the thought of the present invention, have change in specific embodiments and applications
Become part, in summary, this specification content should not be construed as limiting the invention.
Claims (20)
1. a kind of lamp house cloth component, it is characterised in that including lamp house cloth, the first holding sheet, the second holding sheet and expand with cold and contract with heat
Layer；
First holding sheet and second holding sheet are arranged at intervals to form a grasping part；
The lamp house cloth and the layer that expands with cold and contracts with heat are overlapped and are connected in the grasping part.
2. lamp house cloth component according to claim 1, it is characterised in that also including elastic connection structure, the elasticity is even
One end of binding structure is connected with first holding sheet, and the other end of the elastic connection structure connects with second holding sheet
Connect；
Drift of the elastic connection structure along the direction perpendicular to first holding sheet be less than the lamp house cloth and
The gross thickness of the layer that expands with cold and contracts with heat.
3. lamp house cloth component according to claim 1, it is characterised in that the layer that expands with cold and contracts with heat including metallic antimony and/or
Bismuth metal.
4. lamp house cloth component according to claim 1, it is characterised in that the lamp house cloth include reflecting layer, substrate layer with
And bed of cloth, the reflecting layer, substrate layer and bed of cloth be cascading, and the material in the reflecting layer includes metal, institute
Stating bed of cloth has translucency.
5. lamp house cloth component according to claim 4, it is characterised in that the material in the reflecting layer include chromium, aluminium, silver,
At least one of nickel.
6. lamp house cloth component according to claim 5, it is characterised in that the material of the substrate layer is polyvinyl chloride.
7. the lamp house cloth component according to any one of claim 4 to 6, it is characterised in that the lamp house cloth also includes thin
Film layer, the film layer is arranged on side of the reflecting layer away from the bed of cloth.
8. lamp house cloth component according to claim 7, it is characterised in that set between the film layer and the reflecting layer
There is adhesive layer.
9. lamp house cloth component according to claim 7, it is characterised in that the film layer, reflecting layer and substrate layer are viscous
Close and form a light-transmissive film layer.
10. lamp house cloth component according to claim 9, it is characterised in that between the light-transmissive film layer and the bed of cloth
It is provided with pressure sensitive adhesive.
11. the lamp house cloth component according to any one of claim 4 to 6, it is characterised in that the reflecting layer passes through vacuum
Evaporation or vacuum magnetic-control sputtering are arranged on the substrate layer.
12. a kind of lamp box, it is characterised in that including framework and lamp house cloth component, the lamp house cloth component is arranged on the framework
On, the lamp house cloth component is the lamp house cloth component any one of claim 1 to 11.
13. lamp box according to claim 12, it is characterised in that also including light source, the light source is arranged on the framework
It is internal.
14. lamp box according to claim 13, it is characterised in that the light source is area source, the light-emitting area of the light source
Towards the lamp house cloth.
15. lamp box according to claim 14, it is characterised in that the light source includes multiple light emitting diodes.
16. lamp box according to claim 15, it is characterised in that also including control circuit, the control circuit is arranged on
The lower portion, the control circuit is connected with the light source, it is described control circuit be used for control the light source unlatching and
Close.
17. lamp box according to claim 16, it is characterised in that also including ambient light sensor, the ambient light sensing
Device is arranged on the lower portion.
18. lamp box according to claim 17, it is characterised in that the ambient light sensor connects with the control circuit
Connect, the control circuit opens the light source when the ambient light sensor detects ambient brightness value less than predetermined threshold value,
The control circuit closes institute when the ambient light sensor detects ambient brightness value more than or equal to the predetermined threshold value
State light source.
19. lamp box according to claim 18, it is characterised in that the control circuit is additionally operable to open in the light source
When, the ambient brightness value detected according to the ambient light sensor adjusts the luminous intensity of the light source.
20. lamp box according to claim 19, it is characterised in that the control circuit is used for when the light source is opened,
The quantity for the light emitting diode that the ambient brightness value control light source internal detected according to the ambient light sensor is lighted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625421.7A CN107331319B (en) | 2017-07-27 | 2017-07-27 | Lamp box cloth assembly and lamp box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625421.7A CN107331319B (en) | 2017-07-27 | 2017-07-27 | Lamp box cloth assembly and lamp box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107331319A true CN107331319A (en) | 2017-11-07 |
| CN107331319B CN107331319B (en) | 2023-05-05 |
Family
ID=60227948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710625421.7A Active CN107331319B (en) | 2017-07-27 | 2017-07-27 | Lamp box cloth assembly and lamp box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107331319B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109903703A (en) * | 2017-12-08 | 2019-06-18 | 上海三思电子工程有限公司 | Intelligent display device and display system |
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| CN104883496A (en) * | 2015-04-30 | 2015-09-02 | 广东欧珀移动通信有限公司 | Baby photographing method and mobile terminal |
| CN205376040U (en) * | 2015-11-30 | 2016-07-06 | 广东小天才科技有限公司 | Foldable background lamp box |
| CN105892134A (en) * | 2016-06-27 | 2016-08-24 | 京东方科技集团股份有限公司 | Display panel, display device and manufacturing method |
| CN106827743A (en) * | 2017-03-10 | 2017-06-13 | 深圳市武士贸易有限公司 | Surface coating structure with metal photosphere high |
| CN106935159A (en) * | 2017-05-09 | 2017-07-07 | 深圳市华天工艺制品有限公司 | A kind of LED mirror images lamp box and its application method |
| CN207020931U (en) * | 2017-07-27 | 2018-02-16 | 广东欧珀移动通信有限公司 | Lamp house cloth component and lamp box |
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| CN109903703A (en) * | 2017-12-08 | 2019-06-18 | 上海三思电子工程有限公司 | Intelligent display device and display system |
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