CN209040729U - It is a kind of for indoor facade window or the light shield device of top surface skylight - Google Patents
It is a kind of for indoor facade window or the light shield device of top surface skylight Download PDFInfo
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- CN209040729U CN209040729U CN201821242764.1U CN201821242764U CN209040729U CN 209040729 U CN209040729 U CN 209040729U CN 201821242764 U CN201821242764 U CN 201821242764U CN 209040729 U CN209040729 U CN 209040729U
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- pars contractilis
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- shield device
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Abstract
The utility model relates to a kind of for indoor facade window or the light shield device of top surface skylight, including the first pars contractilis and the second pars contractilis, the both ends of first pars contractilis connect to form interconnecting piece with the both ends of the second pars contractilis, for second pars contractilis towards outdoor, the collapsing length of second pars contractilis is greater than the collapsing length of first pars contractilis；Second pars contractilis towards it is outdoor and/or first pars contractilis towards it is indoor while be coated with photocatalyst layer.Light shield device in the utility model, not only has a function of shading, increased photocatalyst layer, and the toxic and harmful gas in the outdoor air that can effectively degrade kills various bacteria, while being also able to achieve indoor heat-insulation and heat-preservation and reducing the multi-efficiencies such as noise.
Description
Technical field
The utility model belongs to the fabric technical field of window or skylight, and in particular to one kind is for indoor facade window
Or the light shield device of top surface skylight, it is mainly used for being made into curtain.
Background technique
With the development of society, purification this technology of air, is increasingly paid attention to by people, such as various indoor extensively
The electronic products such as air purifier.However above-mentioned technology can only solve the problems, such as indoor component environment, and can not remove outdoor
The substances such as the formaldehyde in air.
Existing window or skylight fabric are mainly sunshade or interception, cannot achieve substantially based on cloth
Purification for environment.
It has been observed that photocatalyst is a kind of using Nano titanium dioxide as the photosemiconductor material with photo-catalysis function of representative
The general name of material, it is coated on substrate surface, under the action of ultraviolet light and visible light, generates strong catalytic degradation function: can have
Toxic and harmful gas in effect ground degradation air；Various bacteria, and the toxin that bacterium or fungi can be released point can effectively be killed
Solution and harmless treatment；It is also equipped with simultaneously except functions such as formaldehyde, deodorization, anti-pollution, purification air.
At present the product that photocatalyst is applied to woven is used in outside indoor window more, removes window corresponding part
It can receive outside sunlight, other can not be reacted using the ultraviolet light in sunlight, and textile window curtain fabric is mostly to play decoration
Effect.
Summary of the invention
In order to solve in the prior art, window or skylight fabric can not purify air and sound insulation and noise reduction effect difference not
Foot, the utility model provide a kind of for facade window or the light shield device of top surface skylight.
The technical problems to be solved in the utility model is achieved through the following technical solutions:
It is a kind of for indoor facade window or the light shield device of top surface skylight, including the first pars contractilis and second flexible
The both ends in portion, first pars contractilis connect to form interconnecting piece with the both ends of the second pars contractilis, and second pars contractilis is towards room
Outside, the collapsing length of second pars contractilis is greater than the collapsing length of first pars contractilis；
Second pars contractilis towards it is outdoor and/or first pars contractilis towards it is indoor while be coated with light
Catalyst layer.
Further, it is equipped with fold line on first pars contractilis and the second pars contractilis, when light shield device is received completely
When holding together, first pars contractilis and the second pars contractilis are folded by fold line, are formed and the stacked structure set is laminated by several；
When the light shield device normal extension, first pars contractilis and the second pars contractilis form the structure for having cavity, the chamber
Body is symmetrical along the line of the light shield device interconnecting piece；When the light shield device full extension, first pars contractilis and
Two pars contractilis form trapezium structure.
Further, first pars contractilis is equipped with the first joint face, on second pars contractilis with the first joint face
Corresponding position is equipped with the second joint face, and first joint face and the second joint face pass through glue sticking forming face interconnecting piece.
Both ends connect by face with face with the both ends of the second pars contractilis, forming face interconnecting piece, between the face and face lead to
Cross glue sticking.
Further, the face interconnecting piece is equipped with perforation, and the perforation is set to face interconnecting piece close to end position.
Further, when second pars contractilis is equipped with photocatalyst layer towards outdoor one side, the light shield device is complete
Complete to collapse, the photocatalyst layer on the second pars contractilis forms photocatalyst stacked structure, and the photocatalyst stacked structure is more than or equal to institute
State the half of the stacked structure formed when light shield device collapses completely.
Further, first pars contractilis towards it is outdoor and/or the second pars contractilis towards it is indoor while spray
It is coated with light shield layer.
Further, the light shield layer is tinfoil paper paper layer or silver layer.
Further, the photocatalyst layer is photocatalyst solvent coating.
Further, first pars contractilis and the second pars contractilis pass through polyester fiber non-woven fabric or terylene woven fabric
It is prepared.
The utility model has the beneficial effects that
In the utility model, by increasing photocatalyst layer on the first pars contractilis and/or the second pars contractilis, it is atomized by crossing
It is sprayed at indoor layer and/or is outer layer, so that it is sufficiently adhering to textile fabric surface, in the effect of ultraviolet light and visible light
Under, photocatalyst can generate strong catalytic degradation function, and effectively degrade formaldehyde in air, benzene, volatile organic matter etc. are toxic
Pernicious gas can kill various bacteria, and organic pollutant is resolved into free of contamination water (H2O) and carbon dioxide (CO2), release
Negative oxygen ion.In addition unique cellular structure design, photocatalyst reaction efficiency can be promoted at double in unit area, thus
Have heat-insulation and heat-preservation, sound insulation and noise reduction and also has while absorbing the functions such as barrier ultraviolet light extremely strong except formaldehyde, sterilization, deodorization
Deng the function of purification air.To realize the effect by curtain purification indoor and outdoor air, while it is a variety of to realize heat preservation, noise reduction etc.
Function.
Light shield device in the utility model is made up of two pars contractilis, and the purpose is to the first pars contractilis and second to stretch
Between contracting portion, the cavity at least formed, and this cavity will form static air bag when fabric is opened, in air bag
Opposing stationary air can be used as medium, the effect of blocking or reduce the conduction of heat and sound, reach heat-insulation noise-reduction；Together
When, it due to forming air bag, therefore is equivalent in the unit fixed-area for the single-layer fabric for being coated with photocatalyst, increases photocatalyst
Spraying and response area enhance the effects of purifying air.
Light shield device in the utility model in actual use, is prepared into finished product window decorations, is directly mounted in window frame,
Using position closer to close to window-glass, whole acting surfaces can all contact sunlight, not will cause waste, simple, straight
It connects, efficiently, plays the role of purifying air while user's normal use curtain function.
At present the product that photocatalyst is applied to woven is used in outside indoor window more, removes window corresponding part
It can receive outside sunlight, other can not be reacted using the ultraviolet light in sunlight, and textile window curtain fabric is mostly to play decoration
Effect.
The utility model is described in further details below with reference to accompanying drawings and embodiments.
Detailed description of the invention
Fig. 1 is that structure when light shield device of one of the utility model for facade window or top surface skylight is packed up is shown
It is intended to；
When Fig. 2 is one of the utility model for the light shield device normal extension state of facade window or top surface skylight
Structural schematic diagram；
Knot when Fig. 3 is one of the utility model for the light shield device transition state of facade window or top surface skylight
Structure schematic diagram；
When Fig. 4 is one of the utility model for the light shield device the fully extended state of facade window or top surface skylight
Structural schematic diagram；
Fig. 5 is the structural schematic diagram of embodiment 2 in the utility model；
Fig. 6 is the structural schematic diagram of embodiment 3 in the utility model；
In figure: 1, the first pars contractilis；2, the second pars contractilis；3, photocatalyst layer；4, glass；5, visible light；6, ultraviolet light.
Specific embodiment
Reach the technical means and efficacy that predetermined purpose is taken for the utility model is further described, below in conjunction with attached drawing
And embodiment, to specific embodiment of the present utility model, structure feature and its effect, detailed description are as follows.
It is a kind of for indoor facade window or the light shield device of top surface skylight in the present embodiment referring to shown in attached drawing 1-4,
It is mainly used for making curtain, shutter etc., meanwhile, it is also used to the multiple fields such as car inside glass sunshade.Above-mentioned shading
Component is specifically included for indoor first pars contractilis 1 and the second pars contractilis 2, with the fabric knot for only having one layer in the prior art
Structure is compared, and can increase photocatalytic spray area, while pair that the first pars contractilis 1 and the second pars contractilis 2 are constituted to greatest extent
Layer structure, has the function of superior heat-insulation noise-reduction.Between first pars contractilis 1 and the second pars contractilis 2, in use, it will form
Cavity will form static air bag, thus the effect of reducing the conduction of heat and sound, reach heat-insulation noise-reduction.
When in use, the outer surface direction of the first pars contractilis 1 is indoor for fabric in the present embodiment, and the second pars contractilis 2
Outer surface is towards outdoor or skylight, for shutting out the light.
In order to realize the purification of outdoor air, in the present embodiment, one layer of photocatalyst is sprayed in the outer surface of the second pars contractilis 2
Layer 3 can use its characteristic by increase photocatalyst layer 3, will be in air under the action ofs ultraviolet light and outdoor optical etc.
The toxic and harmful gas such as formaldehyde, sheet, volatile organic matter are explained, while can kill various bacteria, for example, will have simultaneously
Machine pollutant resolves into free of contamination water (H2O) and carbon dioxide (CO2), releasing negative oxygen ion, the negative oxygen ion released, tool
There is calmness, hypnosis, analgesia, antibechic, antipruritic, diuresis, increase the benefits of appetite, blood pressure lowering.
Specifically, under light illumination, valence-band electrons are excited to conduction band to nano photo-catalytic, form electrons and holes, with
It is adsorbed in O2 and the H2O effect on its surface, generates superoxide anion radical, O2- and hydroxyl radical free radical-OH, freedom
Base has very strong oxidative decomposition capacity, can destroy C-C key, c h bond, C-N key, C-O key, O-H key, the N-H key in organic matter,
Decomposing organic matter is carbon dioxide and water；The cell membrane for destroying bacterium simultaneously solidifies the protein of virus, changes bacterium, viral
Living environment is to kill bacterium, virus.There are biocidal efficacies to Escherichia coli, staphylococcus aureus etc..
In the present embodiment, photocatalyst layer 3 can also be sprayed towards indoor one side in the first pars contractilis 1, realize Interior Space
The purification of gas can use its characteristic, under the action ofs ultraviolet light and room light etc., by air by increasing photocatalyst layer 3
In the toxic and harmful gas such as formaldehyde, sheet, volatile organic matter explained, while various bacteria can be killed, for example, simultaneously
Organic pollutant is resolved into free of contamination water (H2O) and carbon dioxide (CO2), releasing negative oxygen ion, the negative oxygen released from
Son has calmness, hypnosis, analgesia, antibechic, antipruritic, diuresis, increases the benefits of appetite, blood pressure lowering.
And if the first pars contractilis 1 towards it is indoor and the second pars contractilis 2 towards it is outdoor while be respectively provided with light
When catalyst layer 3, the present embodiment realizes that indoor and outdoor purifies the effect of air simultaneously.
In the present embodiment, light shield device is formed by pars contractilis, light shield device can be specifically used as to the fabric of curtain etc..
In use, on the one hand, pars contractilis is convenient for the stretching of curtain, realize that curtain is pulled open or packed up；On the other hand, by photocatalyst layer 3,
Light shield device in the present embodiment not only realizes shading, but also realizes purification air, heat preservation, noise reduction and barrier ultraviolet light
Etc. multiple effects.
Embodiment 1
Referring to shown in attached drawing 1-4, in the present embodiment, folding is respectively set on the first pars contractilis 1 and the second pars contractilis 2
Line is packed up to form similar structure with existing curtain, i.e. the first pars contractilis 1 when the curtain that light shield device is constituted collapses completely
It is folded with the second pars contractilis 2, the structure on the first pars contractilis 1 and the second pars contractilis 2 is folded by fold line, and first stretches
Contracting portion 1 and the folded structure of the second pars contractilis 2 are respectively arranged on the two sides of interconnecting piece, are formed and the stacking knot set is laminated by several
Structure, the structure packed up similar to fan or curtain etc..At this point, the first pars contractilis 1 is folded with the second pars contractilis 2, so that
The closures such as the curtain that entire light shield device is constituted are packed up, and photocatalyst reaction face can not effectively contact sunlight irradiation, cannot be risen at this time
To the effect of heat-insulation noise-reduction, purification air and basic curtain.Be equal to light shield device pull-up at this time, for without keeping the sun off or
Person needs to pack up the occasion of curtain made of light shield device or light shield device.
In the present embodiment, the first pars contractilis 1 and the second pars contractilis 2 are V-structure.
Referring to shown in attached drawing 2, when the curtain normal extension that light shield device is constituted, the first pars contractilis 1 and the second pars contractilis 2
Forming the structure for having cavity, structure at this time is hexagonal structure, and V-structure is respectively arranged at the two sides of interconnecting piece, and two
A interconnecting piece forms two sides among hexagon；Hexagon at this time is symmetrical along the line of the light shield device interconnecting piece, i.e.,
Several interconnecting pieces connects the face to be formed, and is the plane of symmetry of hexagon.When hexagonal structure, air bag internal volume is maximum, therefore
Opposing stationary air in air bag, and physics heat and sound pass to and need medium, opposing stationary air meeting in air bag
Block or reduce the conduction of heat and sound.
Referring to shown in attached drawing 4, when the curtain that light shield device is constituted is fully stretched, first pars contractilis 1 and second
Pars contractilis 2 forms trapezium structure.At this point, the first pars contractilis 1 and the second pars contractilis 2 are fully expanded, four sides are integrally formed
The face structure of shape, the cavity inside trapezium structure, convenient for air circulation etc..When this structure, due to being fully withdrawn, thus it is same big
Small light shield device, the shading-area after pulling open at this time is maximum, but the air bag area of trapezium structure is in medium, therefore is dropping
It is better than common curtain or light shield device effect in low in calories and sound conduction.Referring to shown in attached drawing 4, at this point, light shield device is drawn
It stretches for arc or domes, suitable for arc, arch bridge, skylight and the shading at shading position.
Referring to shown in attached drawing 3, among the curtain normal extension and full extension that light shield device is constituted, in the present embodiment,
There are also a kind of transition states, at this point, the first pars contractilis 1 is fully expanded, and the second pars contractilis 2 is not fully deployed then, still
Have the V-structure with refraction angle, so when the first pars contractilis 1, interconnecting piece and the second pars contractilis 2 between form pentagon
Structure has cavity between pentagonal configuration.Pentagonal cavity, volume is maximum, and the air in air bag is most, and physical thermal
Amount and sound, which pass to, needs medium, and opposing stationary air can block or reduce the conduction of heat and sound in air bag.
In the present embodiment, the fabric of the first pars contractilis and the second pars contractilis formation double layer cell shape is divided into light transmission and screening
Two kinds of light, shade fabric is in the compound light shield layer of honeycomb light transmission fabric internal layer, and outer layer photocatalyst figure layer is identical, and shade fabric hides
Luminosity is 100%.
Embodiment 2
Referring to shown in attached drawing 5, when the fabric in the utility model is used for indoor facade window, firstly, cutting fabric, face
Material selection is flexible to use polyester fiber non-woven fabric or terylene woven fabric, and then existing NC Spraying Machine device can pass through its spray head
Light matchmaker is touched into spraying liquid uniform atomizing, material surface is accurately sprayed at, can control its coating thickness and density, the cloth after spraying
Material is cut according to room or vehicle window size, the cloth after cutting, and it is flexible to form the first pars contractilis 1 and second by glue sticking
Portion 2；Meanwhile first between pars contractilis 1 and the second pars contractilis 2, is correspondingly arranged between fold line, and fold line adjacent two-by-two it
It is preceding to be connect by face with face, i.e. the first joint face is formed between two fold lines of the first pars contractilis 1, and the second pars contractilis 2 is right
The second joint face, glue sticking between the first joint face and the second joint face, forming face connection are formed between two fold lines answered
Portion.Perforation is set on the interconnecting piece of face, perforates and is arranged close to the both ends of face joins, convenient for being consolidated the entire cable architecture that folds
Fixed connection.
Then foldable structure is formed by curtain by upper underbeam, upper beam is mounted on window frame by bracket, be divided into manually and
Electronic two kinds of Starting mode.At this point, light shield device is for interior, and then the second pars contractilis 2 closely glass 4, when visible light 5 and purple
Outside line 6 close to when, penetrate glass 4, purification air and noise reduction sound insulation carried out by photocatalyst layer 3 on the second pars contractilis 2
Effect.
Referring to the installation of existing curtain, then pulled open by the way that drawstring progress curtain is different degrees of.
In the present embodiment, formation double layer cell shape structure between the first pars contractilis 1 and the second pars contractilis 2, therefore its production
Window covering products compare the curtain of other materials, have significant ground heat-insulation noise-reduction, light transmission polygonal structures make light form slow reflection
Effect, light are softer.
In the present embodiment, it is equipped with photocatalyst layer 3 close to outdoor one layer in the second pars contractilis 2, and in 2 direction of the second pars contractilis
Indoor one layer is coated with tinfoil paper paper layer.In use, masking foil can play the role of it is such.And be light transmission on the first pars contractilis 1,
I.e. indoor light transmission, outdoor shading, privacy effect are good.
Embodiment 3
Referring to shown in attached drawing 6, when the fabric in the utility model is used for top surface skylight, firstly, fabric is cut, fabric choosing
Take it is flexible use polyester fiber non-woven fabric or terylene woven fabric, then existing NC Spraying Machine device can be by its spray head by light
Matchmaker touches spraying liquid uniform atomizing, is accurately sprayed at material surface, can control its coating thickness and density, the cloth root after spraying
It is cut according to room or vehicle window size, the cloth after cutting, guides fabric to be closed unlatching in curtain frame by draw beam,
It says good-bye dynamic and electronic two kinds of control modes, sunlight is irradiated through glass into interior when cord is closed, and sunlight penetrates when cord is opened
Glass is radiated at web surface, so that photocatalyst coating reacts.
In the present embodiment, photocatalyst can be equipped with close to indoor one layer being installed on indoor first pars contractilis 1
Layer 3, realizes that the good effect of privacy effect is equally played in indoor air cleaning.And photocatalyst layer 3 is played to indoor heat-insulation noise-reduction
Effect, while can also purify the air of a room.
It, can also be in the second pars contractilis 2 close to outdoor one layer of setting light touching as the further improvement of this city embodiment
Matchmaker's layer 3 realizes the effect of the double-deck shading close to indoor one side setting silver layer or aluminium foil paper layer.At this point, the first pars contractilis 1 with
Honeycomb structure is formed between second pars contractilis 2, and the two direction has the photocatalyst layer for being respectively provided with purification air on one side of light, and
It is respectively provided with light shield layer on one side back to light, by the reflection to light, realizes shade function.
The fabric of pars contractilis in the present embodiment is the fabric of Lianyun Harbour Hampton sunshade Sunshading articles Co., Ltd production.
In the present embodiment, light shield device is used at the top of vehicle window, and then the second pars contractilis 2 closely glass 4, when visible light 5
With ultraviolet light 6 close to when, penetrate glass 4, by the photocatalyst layer 3 on the second pars contractilis 2 carry out purification air and noise reduction every
The effect of sound；And the photocatalyst layer on the first pars contractilis 1 carries out the purification of in-vehicle air, and noise reduction, vehicle to vehicle external noise
The functions such as heat-insulated of outer heat.
In the present embodiment, when not having silver layer or aluminium foil paper layer, pars contractilis is light transmission fabric, can be adjustable with light transmission
Light intensity；And when being coated with silver layer or aluminium foil paper layer, it is light screening material, shading can shut out the light with 100%.
In the present embodiment, pure photocatalyst powder can only absorb 400nm ultraviolet light below, in a natural environment, purple
Outer smooth occupation ratio is lower, and the 10% of insufficient natural light, it is ineffective.As technology continues to advance, there is element in photocatalyst technology
Doping techniques, so as to absorb visible light, it might even be possible to absorb far red light.
Subject to product of the concrete function parameter by selected photocatalyst manufacturing enterprise.In the present embodiment, photocatalyst solvent is
The nano photo-catalytic concentrate of Shanghai Xin Gao Industrial Co., Ltd. production.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (9)
1. a kind of for indoor facade window or the light shield device of top surface skylight, which is characterized in that including the first pars contractilis (1) with
And second pars contractilis (2), the both ends of the second pars contractilis of both ends (2) of first pars contractilis (1) connect to form interconnecting piece, described
Second pars contractilis (2) is greater than the flexible of first pars contractilis (1) towards outdoor, the collapsing length of second pars contractilis (2)
Length；
Second pars contractilis (2) towards it is outdoor and/or first pars contractilis (1) towards it is indoor while be coated with
Photocatalyst layer (3).
2. a kind of for indoor facade window or the light shield device of top surface skylight according to claim 1, which is characterized in that institute
It states and is equipped with fold line on the first pars contractilis (1) and the second pars contractilis (2), when light shield device collapses completely, described first
Pars contractilis (1) and the second pars contractilis (2) are folded by fold line, are formed and the stacked structure set is laminated by several；When described
When light shield device normal extension, first pars contractilis (1) and the second pars contractilis (2) form the structure for having cavity, the chamber
Body is symmetrical along the line of the light shield device interconnecting piece；When the light shield device full extension, first pars contractilis (1) with
Second pars contractilis (2) forms trapezium structure.
3. a kind of for indoor facade window or the light shield device of top surface skylight according to claim 2, which is characterized in that institute
The first pars contractilis (1) is stated equipped with the first joint face, the is equipped with the first joint face corresponding position on second pars contractilis (2)
Two joint faces, first joint face and the second joint face pass through glue sticking forming face interconnecting piece.
4. a kind of for indoor facade window or the light shield device of top surface skylight according to claim 3, which is characterized in that institute
It states face interconnecting piece and is equipped with perforation, and the perforation is set to face interconnecting piece close to end position.
5. a kind of for indoor facade window or the light shield device of top surface skylight according to claim 2, which is characterized in that when
When second pars contractilis (2) is equipped with photocatalyst layer (3) towards outdoor one side, the light shield device collapses completely, and second stretches
Photocatalyst layer (3) in contracting portion (2) forms photocatalyst stacked structure, and the photocatalyst stacked structure is more than or equal to the shading group
The half for the stacked structure that part is formed when collapsing completely.
6. it is a kind of for indoor facade window or the light shield device of top surface skylight described in -5 any one according to claim 1,
Be characterized in that, first pars contractilis (1) towards it is outdoor and/or the second pars contractilis (2) towards it is indoor while spray
There is light shield layer.
7. a kind of for indoor facade window or the light shield device of top surface skylight according to claim 6, which is characterized in that institute
Stating light shield layer is tinfoil paper paper layer or silver layer.
8. a kind of for indoor facade window or the light shield device of top surface skylight according to claim 7, which is characterized in that institute
Stating photocatalyst layer (3) is photocatalyst solvent coating.
9. a kind of for indoor facade window or the light shield device of top surface skylight according to claim 6, which is characterized in that institute
It states the first pars contractilis (1) and the second pars contractilis (2) is prepared by polyester fiber non-woven fabric or terylene woven fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821242764.1U CN209040729U (en) | 2018-08-03 | 2018-08-03 | It is a kind of for indoor facade window or the light shield device of top surface skylight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821242764.1U CN209040729U (en) | 2018-08-03 | 2018-08-03 | It is a kind of for indoor facade window or the light shield device of top surface skylight |
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| Publication Number | Publication Date |
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| CN209040729U true CN209040729U (en) | 2019-06-28 |
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| CN201821242764.1U Active CN209040729U (en) | 2018-08-03 | 2018-08-03 | It is a kind of for indoor facade window or the light shield device of top surface skylight |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114305049A (en) * | 2021-12-25 | 2022-04-12 | 余新毅 | Intelligent curtain |
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2018
- 2018-08-03 CN CN201821242764.1U patent/CN209040729U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114305049A (en) * | 2021-12-25 | 2022-04-12 | 余新毅 | Intelligent curtain |
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