EP3351719B1 - Screening arrangement with extensible screen and method for providing variable screening of a window - Google Patents

Screening arrangement with extensible screen and method for providing variable screening of a window Download PDF

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Publication number
EP3351719B1
EP3351719B1 EP17152377.2A EP17152377A EP3351719B1 EP 3351719 B1 EP3351719 B1 EP 3351719B1 EP 17152377 A EP17152377 A EP 17152377A EP 3351719 B1 EP3351719 B1 EP 3351719B1
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EP
European Patent Office
Prior art keywords
roller shaft
extensible screen
screen
traction
screening
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.)
Active
Application number
EP17152377.2A
Other languages
German (de)
English (en)
French (fr)
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EP3351719A1 (en
Inventor
Casper Grønvig Nielsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VKR Holding AS
Original Assignee
VKR Holding AS
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Publication date
Application filed by VKR Holding AS filed Critical VKR Holding AS
Priority to PL17152377T priority Critical patent/PL3351719T3/pl
Priority to EP17152377.2A priority patent/EP3351719B1/en
Publication of EP3351719A1 publication Critical patent/EP3351719A1/en
Application granted granted Critical
Publication of EP3351719B1 publication Critical patent/EP3351719B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/40—Roller blinds
    • E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B2009/2405—Areas of differing opacity for light transmission control
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/40—Roller blinds
    • E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
    • E06B2009/425—Pull chain or cord attached to bottom edge of screen

Definitions

  • the present invention relates to a screening arrangement for adjusting the light intake of a window opening to be screened and comprising: an extensible screen having a predefined length between a first end portion and a second end portion, the extensible screen being made from a material with variable transparency in at least a first direction such that when traction is applied to the material in said first direction, the permeability of the material is increased, a roller shaft connected to drive means, the first end portion of the extensible screen being connected to the roller shaft, the extensible screen being wound on the roller shaft in a non-screening position and configured to be unwound from the roller shaft, under rotation of the roller shaft in an unwinding direction, to a deployed position at a well-defined end stop, corresponding to a first screening position, in which the extensible screen is in a first stretched state, and traction means configured to apply traction on the extensible screen to bring the extensible screen to a second screening position, in which the extensible screen is in a second stretched state and the permeability of the material is increased relative
  • a screening arrangement comprises a screen in the form of a blind or shade, such as a roller blind or a pleated blind.
  • a roller blind is typically comprised of a flexible screen, typically made of fabric, arranged on a roller shaft.
  • the fabric used can be of varying quality depending on the purpose. For instance, the fabric may be a light fabric, which allows a generous amount of light into the room. The fabric can otherwise be a thick fabric with a light impermeable coating to ensure a dark room.
  • the problem with this type of roller blind is that it is difficult to adjust the amount of light. The only way to adjust the light intake is to vary the covering length of the blind. In the prior art, several attempts have been made in order to alleviate this problem.
  • the screen comprises an elastic fabric provided with apertures.
  • the screen is wound on a winding tube driven by a motor, and can be deployed to a length corresponding to the window.
  • the load bar at the lower end edge of the screen is fixed in position relative to a stationary bolt or support at the lower end of the window, following which the screen is subjected to either a traction to widen the apertures, or relaxed to close the apertures.
  • an arrangement of the kind mentioned in the introduction is devised, in which the arrangement is provided with tensioning means in the form of two winding tubes.
  • a screening arrangement of the kind mentioned in the introduction which is furthermore characterized in that the traction means comprises at least one traction cord in connection with the second end portion of the extensible screen and with the roller shaft and which is configured to apply a traction force on the extensible screen when the extensible screen is stretched from said first stretched state to said second stretched state in the second screening position by continuing rotation of the roller shaft in the unwinding direction after the extensible screen has been fully deployed from the roller shaft, and that a spring device is provided to provide pre-tensioning of the at least one traction cord.
  • the roller shaft itself provides the desired stretching of the extensible screen to obtain the variable screening aimed at. Relative to the prior art, this is achieved in a simple manner, as the extensible screen after the fully deployed position is wound up reversely on the roller shaft to attain the second stretched state, in which the permeability of the extensible screen is increased. Hence, the transition from the first screening position to the second screening position is performed more or less automatically by the continued rotation of the roller shaft.
  • the tension level of the extensible screen in the first stretched state may be chosen according to the field of application of the screening arrangement in order to provide optimum freedom of choice.
  • the predefined length may be chosen to correspond to the height of the window opening, or to exceed the height, or to be smaller than the height of the window opening to be screened.
  • the invention is operable to any suitable connections between the traction cord or cords and the extensible screen on one hand and with the roller shaft on the other, it is presently preferred to incorporate a bottom bar connected to the second end portion of the extensible screen in one embodiment, and in another embodiment to connect the traction cord directly to the roller shaft.
  • the bottom bar provides stability to the screen and distributes the forces acting on the material of the extensible screen.
  • the bottom bar may be for instance a metal, plastic or wooden bar, either compact or as a profile element.
  • At least one pulley is arranged substantially parallel to and at a distance from the roller shaft, each traction cord being guided around the respective pulley such that the respective traction cord forms a loop between the roller shaft and the second end portion of the extensible screen, possibly via the bottom bar in such cases this is present.
  • This allows the traction cord(s) to take a determined path towards the respective pulley while the screen is being unwound. With the pulleys, the traction cord is able to round the respective pulley and return towards the roller shaft.
  • the spring device comprises a spring-loaded pulley and a guide pulley. In this way, each traction cord may be looped back and the cord stroke is doubled. In turn, this provides for a compact design and a more constant spring force. Alternative configurations of such a spring device are however conceivable.
  • the screening arrangement further comprises a positioning element, preferably comprising a guide roller, having a positioning surface arranged to position the extensible screen in the predefined screening plane.
  • the positioning element compensates for the deviation in the radial position of the extensible screen while being wound or unwound on the roller shaft.
  • variable transparency is achieved by apertures in the material.
  • the apertures may increase in size.
  • the material of the extensible screen may be one of the following: a textile made with at least one of elastic, lamellae, knits, pleat, non-woven or the like.
  • a textile with elastic properties may be simple to produce and may be versatile in installation.
  • an elastic textile may be made as variably stretchable as needed.
  • Apertures may be naturally incorporated in the textile, such as a knitted textile.
  • the apertures may also be applied afterwards, such as slits or holes.
  • the apertures may also be provided as an effect of having a lamella structure.
  • a lamella material may be either a textile or a stiff material made from a plastic or a metal.
  • the drive means comprises a tubular motor incorporated in the roller shaft.
  • the tubular motor is connected to a control system including calibration means such as a revolution counter and/or one or more sensors.
  • calibration means such as a revolution counter and/or one or more sensors.
  • the motor may be calibrated using the revolution counter possibly in combination with the one or more sensors in order to determine the point of deployment.
  • the torque When fully deployed, the torque may be adjusted in a specific mode for stretching the extensible screen.
  • a remote control may be used as well as a stationary switch.
  • the screening arrangement comprises a header arranged to cover at least the roller shaft at the top of the window and side rails, in which side portions of the extensible screen are guided. In addition to protecting the operational parts of the screening arrangement, this provides for a pleasant appearance.
  • variable screening in a second aspect, a method for providing variable screening is provided as defined in independent claim 17.
  • FIGs 1 and 2 schematically illustrate embodiments of a screening arrangement 100 adapted to be arranged in a window (not shown).
  • the window will be referred to only as “window” and the invention is in particular intended for use in a roof window, installed in an inclined roof surface.
  • Directional terms such as “upper”, “lower” etc. relate to the position shown in the drawings.
  • the invention is in principle applicable to all types of windows for installation in all types of roofs, including flat roofs, and facades, however.
  • the window has, in a manner known per se, at least one frame encasing a window opening to be screened. Elements having the same or analogous function are denoted by the same reference numerals throughout.
  • the screening arrangement 100 comprises an extensible screen 6 and has a predefined length between a first end portion 61 and a second end section 62, and is made from a material having variable transparency as will be described in further detail in the following.
  • the first end portion 61 is connected to a roller shaft 1 connected to drive means (not shown) such that the extensible screen 6 may be wound up on and unwound from the roller shaft 1 under rotation thereof.
  • the extensible screen 6 is typically rectangular, and the width of the extensible screen corresponds to or is slightly smaller than the length of the roller shaft. This may however be different depending on the specific installation, the width being defined between opposed side portions 63, 64.
  • the roller shaft 1 is typically positioned at the top of the window, for instance fastened by suitable brackets to one of the frames of the window.
  • roller shaft 1 is arranged horizontally at the top of the window.
  • the extensible screen 6 may thus be brought from a non-screening position in which the extensible screen 6 is wound more or less completely on to the roller shaft 1 and to one or more screening positions by moving the second end portion 62 downwards, hence typically in the direction towards the bottom of the window, as will be elaborated on below.
  • the screening arrangement 100 comprises a header 9 arranged to cover at least the roller shaft 1 at the top of the window and two side rails 10 in which the side portions 63, 64 of the extensible screen 6 is guided. Furthermore, the screening arrangement 100 comprises a bottom bar 4 connected to the free or second end portion 62 of the extensible screen 6.
  • the extensible screen 6 is provided with a plurality of apertures 8 in the material.
  • the material may be characteristically elastic and/or have variable transparency. That is, a traction force applied to the material in the direction of arrows A may stretch or extend the material in order to reveal apertures 8 that may vary in size depending on the size of the traction force.
  • the material with is shown in further detail in Fig. 5a , which illustrates schematically an embodiment of the specific shapes and configuration of the apertures 8 in the extensible screen 6.
  • the extensible screen 6 may be provided with apertures 8 of different or equal size. In an unstretched, or substantially relaxed, state, the apertures 8 barely show, and hence there is little light permeability. In a stretched state, the apertures 8 are stretched and increased in size in at least the first direction, and thereby light intake from a window can be varied.
  • the extensible screen 6 may in general be formed by any textile made with at least one of elastic, lamellae, knits, pleat, non-woven or the like.
  • apertures 8 may hence also for instance be provided as interstices in a mesh, as indicated schematically in the embodiment of Fig. 2 .
  • FIG. 5b shows a sample cloth to be used in the extensible screen 6, in the form of a warp having a plurality of warp threads X of elastic fibres or yarns.
  • Weft yarns Y are added by conventional joining techniques. The weft yarns Y are typically designed as threads and are here arranged in pairs, one behind the other.
  • the weft yarns Y are substantially non-elastic, so that the screen, so that the screen may be stretched in the longitudinal direction, that is in the direction of the warp yarns X, without significantly shrinking in the transverse direction, i.e. in the direction of the weft yarns Y.
  • the screening arrangement 100 comprises traction means to bring the screening arrangement from a first screening position to a second screening position.
  • traction means comprising two traction cords 3 are shown in Fig. 2 .
  • the position of the roller shaft 1 is denoted by axis X1.
  • the wound up position is when the extensible screen 6 is fully withdrawn and the entirety of the window opening to be screened is exposed, i.e. a non-screening position.
  • the deployed position is when the extensible screen 6 is unwound and deployed to cover the entire window opening in a first screening position.
  • the extensible screen 6 is furthermore adapted to assume a second screening position, i.e. the position shown in Fig. 1 , in which the material of the extensible screen 6 is in a second stretched state and is stretched to a higher level relative to the first stretched state and the apertures 8 are in a more open condition.
  • the extensible screen 6 In the first screening position the extensible screen 6 is deployed, i.e. unwound from the roller shaft 1, and the extensible screen 6 is in a first stretched state.
  • the position of the second end portion 62 of the extensible screen, or of the bottom bar 4, relative to the window opening to be screened is in a well-defined end point, which may be mechanically defined, for instance by an abutment, or controlled electronically by suitable programming of the drive means.
  • the tension of the screening material of the extensible screen 6 in the first stretched state depends on the relation between the predefined length of the extensible screen 6 and the height of the window opening to be screened.
  • this predefined length of the extensible screen 6 corresponds to the length of the screening material in a completely relaxed state of the extensible screen.
  • the predefined length is configured relative to the height of the window opening to be screened in one of the following three manners:
  • the bottom bar 4 may also be positioned in a number of intermediate positions in between to provide a variety of screening positions.
  • the screening arrangement 100 is provided with traction means in the form of at least one traction cord.
  • traction means in the form of at least one traction cord.
  • two traction cords 3 are provided, one on each side of the extensible screen 6.
  • the traction means including the rotational movement of the roller shaft 1 itself and the traction cords 3 are configured to apply the traction force on the extensible screen 6 such that the extensible screen 6 is stretched from said first stretched state to said second stretched state under rotation of the roller shaft 1.
  • the load is more evenly distributed.
  • each traction cord 3 is connected to the second end portion 62 of the extensible screen 6 via the bottom bar 4 and to the roller shaft 1 in that a first end 3a is wound onto the roller shaft 1, here in the opposite direction of the winding of the extensible screen 6.
  • the winding of the traction cords may also be provided on a separate winding reel.
  • the winding reel may be connected directly to the roller shaft or via a suitable transmission mechanism such as a belt drive or a chain drive.
  • the traction cord or cords may also assist in unwinding the extensible screen from the roller shaft.
  • a second end 3b of the traction cord 3 is arranged to be connected to a second end portion 62 of the extensible screen 6.
  • the second end 3b of each traction cord 3 is connected to a spring device 5 accommodated in the bottom bar 4.
  • the spring device 5 comprises a tension spring directly connected to the second end 3b of the traction cord 3, but other arrangements are conceivable.
  • Other configurations of such a spring device to provide pre-tensioning of the traction cord or cords include the provision of a spring device placed behind the header and/or side rails, and by forming the traction cord or cords at least partially by elastic portions.
  • the screening arrangement 100 further comprises at least one idler shaft or pulley 2, here two pulleys 2, one positioned at either side of the extensible screen 6 along an axis X2 to cooperate with a respective traction cord 3.
  • the pulleys 2 are arranged substantially parallel to and at a distance from the roller shaft 1, each traction cord 3 being guided around the respective pulley 2 such that the respective traction cord 3 forms a loop between the roller shaft 1 and the second end portion 62 of the extensible screen 6, either directly to the second end portion or via the bottom bar 4.
  • the pulleys 2 are located near the end point for the travel of the extensible screen 6.
  • the roller shaft 1 may receive its driving torque to unwind and wind up the extensible screen 6 from a motor.
  • the drive means of the embodiment of Fig. 2 comprises a tubular motor incorporated in the roller shaft 1.
  • the tubular motor is connected to a control system including calibration means such as a revolution counter and/or one or more sensors.
  • the motor may be thus be configured to provide the screening arrangement 100 with a suitable torque at a suitable speed over predefined time periods.
  • the extensible screen 6 Before deployment, the extensible screen 6 is in a wound up, or collapsed, position in which the extensible screen is wound up on the roller shaft 1.
  • a partially unwound extensible screen 6 is shown.
  • the roller shaft 1 is rotated in a first rotational direction (counter-clockwise in the embodiment shown) by the application of a torque indicated Mu in Fig. 3b and the extensible screen 6 moves in the direction of arrow U.
  • the traction cords 3 assist in pulling the bottom bar 4 and hence the second end portion 62 of the extensible screen 6 to unwind the extensible screen 6 from the roller shaft 1.
  • the extensible screen 6 is subjected to only a slightly stretched state during this movement.
  • Fig. 3b illustrates the extensible screen 6 in a deployed position corresponding to a first screening position.
  • the tension in the extensible screen 6, and the degree of deployment is dependent on the relationship between the predefined length of the extensible screen 6 and the height of the window opening to be screened, as described in the above.
  • the deployed position is the also the position in which the extensible screen 6 is fully deployed, i.e. no more of the screen 6 is wound round the roller shaft 1, i.e. the first end portion 61 is the only portion in contact with the roller shaft 1. In this position the extensible screen 6 generally covers the window and the extensible screen is in a first stretched state.
  • first stretched state encompasses the possibilities that the screen is an a completely relaxed state, meaning that the screen is substantially not subjected to traction or other stretching load, and that the screen is subjected to a tensioning force, for instance in the case in which the height of the opening to be screened is larger than the predefined length of the extensible screen as completely relaxed.
  • the drive means of the screening arrangement is calibrated, for instance by a revolution counter, in order to detect the deployed position.
  • the extent of the desired stretch of the extensible screen 6 is able to be determined and programmed into the control means.
  • One simple manner of achieving the well-defined end point is by programming the control means to detect an increase in the power consumption of the tubular motor.
  • Fig. 3c illustrates a continuing rotation of the roller shaft in the first rotational direction and a torque indicated Mt is transferred to the roller shaft 1.
  • the extensible screen 6, which is in connection with the roller shaft 1 follows the roller shaft 1 in its continued rotational loop and is thus wound reversely on the roller shaft 1.
  • a positioning element in the form of a guide roller 7, which ensures that the extensible screen 6 is kept in a substantially vertical position.
  • the guide roller 7 thus compensates for the deviating radial position of the extensible screen 6 due to its position on the roller shaft 1.
  • the screen 6 rounds the positioning element 7 and thus starts to move upwards again towards the collapsed position.
  • the traction cord 3 continues to wind round the roller shaft 1.
  • the roller shaft 1 draws the extensible screen 6 upwards
  • the traction cord 3 draws the extensible screen 6 downwards as indicated by the arrow F T .
  • This double movement performs traction on the extensible screen 6 and thus separates the material of the extensible screen 6 to increase the permeability of the material, i.e. in the specific embodiment to widen the apertures 8, and the variable light permeability aimed at is achieved.
  • the traction cord 3 is concurrently wound up on the roller shaft 1.
  • the spring device 5 compensates for the differences in unwound length of the extensible screen 6 relative to the wound up length of the traction cord 3.
  • the roller shaft 1 is subjected to the torque indicated Mu and the extensible screen 6 moves in the direction of arrow U, while the traction cords 3 pull the bottom bar 4 downwards as shown in Fig. 3a .
  • the relationship between the torque Mu and the force which the traction cords 3 influence the bottom bar 4 depends on several factors including the dimensioning of the roller shaft 1, the elasticity, thickness and predefined length of the extensible screen 6, of whether the traction cords 3 are wound up on a separate winding reel or on the roller shaft 1 itself, and if so, on a part of reduced diameter thereof; and last but not least the configuration and dimensioning of the spring device acting to provide a pre-tensioning of the traction cords 3.
  • the traction cords 3 serve to hold the bottom bar 4 and hence the second end portion 62 of the extensible screen 6 substantially stationary by means of the force Ft indicated in Fig. 3b .
  • the force Ft required to keep the bottom bar 4 stationary also depends on a number of factors as described in the above, including the magnitude of the torque Mt of the roller shaft 1.
  • the torque Mt may either be of the same magnitude as the unwinding torque Mu, or different, just as a varying torque is also conceivable.
  • the "cord reserve" inherent in the spring device 5 ensures proper functioning of the screening arrangement 100.
  • the cooperation between the spring device and the traction cords 3 provide for the balancing of holding the bottom bar 4 (or the second end portion 62 at its desired end stop position) such that the extensible screen 6 is prohibited from pulling the bottom bar 4 upwards, just as it is ensured that the roller shaft 1 is able to wind the extensible screen 6 up reversely during the continued rotation in the unwinding direction.
  • This is well within the skills of the person skilled in the art. It is also conceivable to provide this "cord reserve” in alternative embodiments, for instance by a tension spring arranged behind the side rail and connected to the traction cord, or by forming the traction cord partly or entirely from elastic portions.
  • the roller shaft 1 In order to release the traction and to wind the extensible screen 6 to its collapsed position, the roller shaft 1 is subsequently rotated in a second rotational direction, opposite to the first rotational direction, and thus returns the extensible screen 6 on the roller shaft 1.
  • the roller shaft 1 is then set to rotate further in the second rotational direction (clockwise in the embodiment shown), opposite to the direction shown in Figs 3a-3c .
  • the initial movement of the extensible screen 6 in the return direction entails that the traction force, which the traction cords 3 influence on the bottom bar 4 to keep the bottom bar 4 and hence the second end portion 62 of the extensible screen 6 substantially stationary, is released when the roller shaft 1 rotates in the winding direction, and the extensible screen 6 relaxes from the second stretched state to the first stretched stated.
  • the traction cords 3 will at the same pace unwind from the roller shaft 1 and follow the path of the extensible screen 6 until the extensible screen 6 is in a wound up position.
  • Figs 4a and 4b show an alternative embodiment, in which the extensible screen 6 and the traction cords 3 are arranged as previously around the roller shaft 1.
  • the drive of the roller shaft 1 runs in the opposite direction to unwind and wind up the extensible screen 6, the unwinding direction being thus clockwise.
  • the screen 6 rounds the positioning element 7 during the unwinding rather than during the traction.
  • Such configuration allows a more compact design such that the extensible screen 6 and the traction cords 3 operate in substantially the same plane.
  • the suspension of the second end 3b of the traction cord 3 is preferably provided by a spring device, the simplest form being shown in Fig. 2 .
  • the tubular motor of the roller shaft 1 may be provided with torsion spring reels, or as shown in Fig. 6 a more complex device is shown.
  • the bottom bar 4 in Fig. 6 accommodates the second end 3b of the traction cord 3 arranged in connection with a spring device 5 comprising a spring-loaded pulley 11 of which the spring-load is provided by a pressure spring, and the second end 3b of the cord is guided about a guide pulley 12.
  • This spring device 5 provides a more even traction force and reduces the impulse force on the cord and thereby in turn the extensible screen 6 during winding and unwinding, in addition to being of a compact design and to the compensation properties described in the above.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
EP17152377.2A 2017-01-20 2017-01-20 Screening arrangement with extensible screen and method for providing variable screening of a window Active EP3351719B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL17152377T PL3351719T3 (pl) 2017-01-20 2017-01-20 Układ zasłaniający z wyciąganą zasłoną oraz sposób zapewniania zmiennego zasłaniania okna
EP17152377.2A EP3351719B1 (en) 2017-01-20 2017-01-20 Screening arrangement with extensible screen and method for providing variable screening of a window

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17152377.2A EP3351719B1 (en) 2017-01-20 2017-01-20 Screening arrangement with extensible screen and method for providing variable screening of a window

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Publication Number Publication Date
EP3351719A1 EP3351719A1 (en) 2018-07-25
EP3351719B1 true EP3351719B1 (en) 2020-04-08

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CN110207308A (zh) * 2019-06-24 2019-09-06 福建农林大学 室外新风加湿节能装置
KR102304949B1 (ko) * 2019-11-26 2021-09-27 한국과학기술원 신축성 투명도 조절 필름, 투명도 조절 필름의 제조 방법 및 이를 이용한 스마트 윈도우
BE1027899B1 (nl) * 2019-12-20 2021-07-26 Copaco Screenweavers Nv Verduisteringssysteem en scherm daarvoor
KR102512747B1 (ko) * 2020-06-12 2023-03-23 한국과학기술원 배향된 이종 계면을 갖는 신축성 투명도 조절 필름, 그 제조 방법 및 신축성 투명도 조정 필름을 포함하는 스마트 윈도우
BE1030691B1 (nl) * 2022-07-05 2024-02-05 Wilms N V Scherminrichting met trekmechanisme

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Publication number Publication date
EP3351719A1 (en) 2018-07-25
PL3351719T3 (pl) 2020-08-24

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