DK3138988T3

DK3138988T3 - RUDE EQUIPPED WITH DARK SHEET

Info

Publication number: DK3138988T3
Application number: DK16186827.8T
Authority: DK
Inventors: Hans-Werner Kuster; Walter Schreiber; Ariane Weissler; Marc Maurer
Original assignee: Saint Gobain
Priority date: 2015-09-03
Filing date: 2016-09-01
Publication date: 2018-09-03
Also published as: EP3138988A1; ES2685914T3; PL3138988T3; FR3040723A1; FR3040723B1; EP3138988B1

Description

1

GLAZING PROVIDED WITH A CONCEALMENT CURTAIN

TECHNICAL FIELD

The present disclosure concerns a glazing and, in particular, an insulating glazing (particularly a double or triple glazing) of the type comprising at least two transparent sheets connected at their edge by a frame.

The present disclosure concerns, more specifically, a glazing of this type equipped with a concealing device arranged in the intermediate space located between the transparent sheets.

BACKGROUND OF THE INVENTION

The constant desire to reduce energy expenditure, in particular in the field of construction, has led to the development of glazings which allow the regulation of the contribution of light and heat inside buildings.

Glazings incorporating concealing devices have thus been developed over a period of several years, these glazings offering the advantage of being aesthetic, durable, hygienic and easily maintained.

For example, glazings are known which are equipped with a curtain mounted around a winding axis partially fixed above the glazing, and around which the curtain is capable of being wound and unwound.

One such glazing according to the preamble of claim 1 with an integrated curtain mounted around a winding axis is known from EP 2 532 824 A2.

With this type of device, it has been found that, on unwinding, the curtain often collides with the sheets of the glazing, which can eventually damage it. Furthermore, the curtain sometimes remains jammed, in particular when its winding/unwinding occurs unevenly over the width. For these reasons, the existing glazings with integrated curtains are not considered to be effectively reliable.

SUBJECT AND SUMMARY OF THE INVENTION

One of the aims of the present invention is to provide a glazing with integrated concealing curtain, which is more reliable than the currently known glazings.

This aim is achieved by a glazing comprising at least two transparent sheets that are connected at their edge by a frame and delimit between them an intermediate space, a concealing curtain, capable of being moved in a longitudinal direction inside the intermediate space, and an actuating system of said curtain, the glazing being characterised in that a first end of the curtain is rigidly attached to a winding axis extending in a lateral direction orthogonal to the longitudinal direction, the curtain being wound around the winding axis, and the actuating system comprises means for driving the first end in translation in the longitudinal direction, and means for guiding the first end in translation in the longitudinal direction.

In the present disclosure, unless otherwise specified, a transparent body shall mean a body having the property of allowing the passage of light. A transparent body may therefore be genuinely transparent (in the sense that one can clearly distinguish objects through it) or translucent.

Furthermore, in the present disclosure, a sheet is a thin and generally flat assembly, produced in any suitable transparent material or combination of transparent materials, in particular glass and/or plastic.

It is understood that the glazing according to the invention is not limited to a double glazing, but may be any type of multiple glazing comprising at least the structure claimed, possibly supplemented by other (transparent) layers arranged in front of one or each of the two transparent sheets.

Typically, the intermediate space between the two transparent sheets forms a gas space, generally of air or of a gas that is a poorer conductor of heat than air and which can limit the losses due to conduction or convection, for example argon or krypton.

The concealing curtain may be produced in any material or combination of materials enabling it to confer concealing properties (i.e. reflecting or absorbing the sun’s rays) over at least a part of its surface, and preferably in a manner distributed over the whole of its surface.

The curtain is biased in a wound state around the winding axis.

Here, winding axis shall mean a material axis or winding shaft.

The means for biasing the curtain by winding around this axis are either means distinct from the curtain, for example at least one spring (coupled with the winding axis or with the curtain), or means intrinsic to the curtain. In the latter case, the curtain is said to be self-winding.

In the present application, self-winding curtain shall therefore mean a curtain which in the absence of external biases is found in its wound position. A self-winding curtain is formed, for example, by a superposition and subsequent heating of two layers made from materials having different coefficients of thermal expansion. The bias resulting from differential expansion of the two materials, permanently biases the curtain in its wound state. This effect, also known as the bimetal effect, can also be obtained without heat treatment, by certain particular production methods (layer deposition).

According to one example, the self-winding curtain comprises a substrate made of polyethylene terephthalate (PET) or of polyethylene naphthalate (PEN) covered with a layer of metal or metal oxide, for example indium tin oxide (ITO).

In the present disclosure, unless otherwise specified, the longitudinal direction is the desired direction of movement of the curtain.

Here, movement means its translation in a given configuration (in particular at constant length) and/or its deployment/retraction (by increasing/decreasing its length, in other words by winding/unwinding).

This longitudinal direction Y is generally parallel to the planes of the transparent sheets. A lateral direction X is also defined perpendicular to the longitudinal direction Y, and generally parallel to the planes of the transparent sheets.

The width of element is generally measured in the lateral direction, its height or its length in the longitudinal direction, and its thickness in a transverse direction orthogonal to the lateral and longitudinal directions.

In the present application, a transverse plane shall moreover extend as a plane orthogonal to the lateral direction.

The median plane of the curtain is therefore defined as the transverse plane passing through the middle of the curtain in the lateral direction.

Finally, unless specified otherwise, the adjectives upper and lower are used in reference to the directions of the Y axis as represented in the figures.

In general, the curtain has a first end close to the winding axis of the curtain, and a second end, opposite the first end in the longitudinal direction.

The guide means are intended to guide the movement of the winding axis of the curtain in the longitudinal direction. The curtain is permanently taut between the two ends (on the non-wound portions). The second end of the curtain is, for example, fixed to a (fixed or movable) support and the first end of the curtain is rigidly attached to the winding axis, itself guided in translation. The curtain is thus protected from impacts against the sheets of the glazing.

According to one particular provision, the first end of the curtain is fixed to the winding axis, for example by bonding, and the winding axis is mounted rotatably about its axis.

According to one example, the guide means comprise at least one (primary) guide cable, to which the first end of the curtain or a support assembly rigidly attached to said end is rigidly attached or on which said end or said support assembly is movably mounted.

In general, the (primary) cable extends parallel to the transparent sheets, and, at least partially, parallel to the longitudinal direction.

In the case where the first end of the concealing curtain or a support assembly rigidly attached to said end is rigidly attached of the primary cable, the latter can for example be a so-called useful strand of a belt. The end moves rigidly attached to the belt, the concealing device is guided and prevented from colliding against the transparent sheets. A belt generally refers to any system comprising a band closed on itself around at least two pulleys, the band being able to take any suitable shape (a cable, wire, chain, flat band, etc.).

According to a preferred arrangement, the guide means are configured to guide the first end symmetrically on either side of the median plane of the curtain. Hence, the winding axis remains permanently orthogonal to the longitudinal direction of movement of the curtain.

To achieve this, the guide means can comprise at least two (primary) guide cables.

According to one example, the guide means comprise at least two guide cables arranged, at least in part, on either side of the median plane of the concealing curtain, and which are rigidly attached to or on which is movably mounted the first end of the concealing curtain or a support assembly rigidly attached to said end.

They can, in particular, be arranged symmetrically with respect to the median plane of the curtain.

According to one example, the guide means comprise at least two belts suitable for being moved simultaneously and each comprising a useful strand forming a guide cable, the first end of the curtain being rigidly attached to the so-called useful strands.

To strengthen the reliability of the system, and to preserve the integrity of the curtain, the glazing can comprise a casing housing the winding axis of the curtain.

In this case, the casing can be fixed or movably mounted on said at least one cable and have a slot that extends laterally and through which a curtain thickness passes.

These provisions also allow the system to be aesthetically improved, by concealing the winding axis and the portion of the curtain wound around the axis.

In order to improve its stability, the primary casing can comprise at least one guide opening suitable for the passage of a guide cable (in particular a cable sliding in said opening).

In the case where the primary guide cable forms a (so-called useful) strand of a primary belt to which the casing is rigidly attached, the guide opening can serve for the passage of a so-called passive strand of the same belt.

According to one example, the drive means comprise a magnetic drive system, comprising at least one outer member suitable for being moved along an outer face of the glazing, and at least one inner member rigidly attached to one of the first end and the second end of the concealing curtain, the outer member and the inner member being designed to cooperate by magnetic effect. According to one example, the outer and inner members are magnets. According to another example, one of the outer member and the inner member is a magnet and the other is a component made of magnetic material. In the context of the present invention, magnetic material means a material which has the property of becoming magnetised under the effect of an external magnetic field (these are, for example, components made from iron, cobalt, nickel or the alloys thereof, in particular steels). The outer member and the inner member are therefore magnetically attracted to each other. In order to actuate the curtain, the user has only to move the outer member along the glazing. With this magnetic drive system, it is no longer necessary to pierce the frame of the glazing in order to allow the passage of electrical power cables to the intermediate space. The intermediate space is perfectly isolated from the outside, avoiding humidity problems inside the glazing.

Another solution consists of providing electrical drive means comprising at least one electric motor.

For example, the electric motor can be powered by a photovoltaic module, the electric motor and the photovoltaic module both being housed in the intermediate space of the glazing. Indeed, it has been shown that the energy stored by a photovoltaic module arranged in the intermediate space is broadly sufficient for actuating the curtain in normal use.

In a preferred manner, in this case the actuating system comprises a remote control system of the electric motor, for example a Bluetooth system.

According to another variant, the drive means comprise a mechanical drive system comprising, for example, a crank arranged outside of the intermediate space (accessible to the user), and in particular a crank that is mechanically connected, by transmission means, to at least one guide cable, the actuation of the crank driving said cable.

The glazing according to the invention can also comprise blocking means for blocking the first end of the curtain in the longitudinal direction. If appropriate, these means can be arranged on the casing housing the winding axis of the curtain. By way of example, they may comprise springs, in particular springs having a plurality of stop positions, or pawls.

According to one example, the second end of the curtain, opposite the first end, is fixed to the frame of the glazing. In other words, the second end of the curtain cannot move with respect to the frame.

According to another example, the actuating system comprises means for driving the second end of the curtain, opposite the first end, in translation in the longitudinal direction, and means for guiding the second end of the curtain in translation in the longitudinal direction.

It is understood that the two ends of the curtain can thus be moved. The glazing can thus be concealed over a predefined portion of the height, situated at a distance from each longitudinal edge of the frame. In particular, the user can conceal only the portion of the glazing which requires such (for example in order to avoid being dazzled by the sun), without substantially reducing the lighting of the room.

According to one example, the drive means of the actuating system comprise a system for driving the first end of the concealing device in translation in the longitudinal direction, and a second system for driving the second end of the concealing device in translation in the longitudinal direction, said first and second systems being suitable for being actuated independently of each other.

The second drive system may be, for example, a magnetic system, an electrical system or a mechanical system as previously defined.

According to one example, the second end of the curtain is rigidly attached to a support assembly, and the drive means are suitable for driving said support assembly in the longitudinal direction, and the guide means are suitable for guiding said support assembly in translation. A support assembly generally extends in the lateral direction. It comprises, for example, an axis, a bar, a casing, or even a combination of such elements.

For example, the means for guiding the second end comprise at least one secondary guide cable to which the second end of the curtain or a support assembly rigidly attached to said end is rigidly attached or on which said end or said support assembly is movably mounted.

Preferably, the means for guiding the second end are configured to guide the second end of the curtain symmetrically on either side of the median plane of the curtain.

According to one example, the guide means for guiding the second end comprise at least two secondary belts suitable for being moved simultaneously and each comprising a useful strand forming a secondary guide cable, the second end of the curtain being rigidly attached to the so-called useful strands.

Several embodiments are described in the present disclosure. However, unless otherwise specified, the features described in relation with one embodiment can be applied to any other embodiment.

BRIEF DESCRIPTION OF THE FIGURES

The invention will be better understood and its advantages will appear more clearly on reading the following detailed description of several embodiments presented by way of non-limiting examples. The description refers to the accompanying drawings, in which: -figure 1 illustrates a glazing according to a first embodiment, as a partially cutaway perspective cross-sectional view; -figure 2 is a cross-sectional view along the plane II of figure 1; - figure 3 is a more detailed perspective view of the casing of figure 1; -figure 4 is a cross-sectional view along the plane IV of figure 3; - figure 5 is a more detailed perspective view of the actuating system of figure 1; - figure 6 is a perspective view of a glazing according to a second embodiment; - figure 7 is a cross-sectional view of a glazing according to a third embodiment; - figure 8 is a cross-sectional view of a glazing according to a fourth embodiment; and

- figure 9 is a more detailed perspective view of the actuating system of figure 8. DETAILED DESCRIPTION OF THE EMBODIMENTS

Figure 1 shows a double glazing 100 according to a first embodiment of the invention, comprising a first transparent sheet 10 and a second parallel transparent sheet 12, in this case made of glass, spaced apart from one another and assembled at their edge by a transverse member forming a continuous frame 14, typically comprising a spacer 15.

The frame 14 delimits, between the sheets 10, 12, an intermediate space 16, containing for example air, and for which the sealing is ensured, in a well known manner, by a seal 18, in particular of silicone, produced between the glass sheets 10, 12 and all around the edge of the spacer 15.

The intermediate space 16 houses a concealing curtain 20, in this case of the selfwinding type, in other words naturally in the wound position.

The curtain 20 typically has a width of between 0.2 and 2 metres and a length of between 0.5 and 3 metres.

It is formed, for example, by superposition and heat treatment of a first layer of polyethylene terephthalate (PET) of thickness between 10 and 50 microns, and of a second metal layer, in particular ITO, of thickness between 50 and 500 nm. According to one variant, the first layer could also be made of polyethylene naphthalate (PEN). Heating leads to differential expansion of the superpositioned layers, introducing a stress in the curtain which tends to bring it naturally into its wound state.

As will be described below, the curtain 20 is capable of being moved in a longitudinal direction or direction of movement Y.

For the curtain 20, a first end 20a (the lower end in the example illustrated) is defined, closest to its winding axis - in other words closest to the axis of the cylinder formed by the curtain in the wound state - and a second end 20b (the upper end in the example illustrated), opposite the first end 20a (see figure 2).

As illustrated in figure 2, the first end 20a of the curtain 20 is rigidly attached to a first support assembly 21 comprising a winding axis 22, made for example of metal, extending in a lateral direction X orthogonal to the longitudinal direction Y, and parallel to the sheets 10, 12 and to the longitudinal edges 14a, 14b of the frame 14. It should be noted that, here, rigidly attached means rigidly attached in translation in the longitudinal direction Y. For example, the first end 20a is fixed to the winding axis, for example by screwing or again, preferably, by bonding.

The curtain 20 is naturally in a wound position around this winding axis 22.

For example, the diameter of the winding axis 22 is between 1 and 4 mm and the maximum diameter of the curtain 20 in the wound state around the axis 22, is between 2 and 8 mm.

In the particular example represented, the first support assembly 21 also comprises a casing 50, in this case in the shape of a parallelepiped, housing the winding axis 22.

The casing 50, which is for example made of metal, comprises bearings 52 at its lateral ends, in particular ball bearings, suitable for supporting and guiding the rotation of the lateral ends of the winding axis 22. The winding axis 22 is thus mounted to rotate freely with respect to the casing.

As illustrated in figures 3 and 4, an elongate slot 54, parallel to the winding axis 22, is provided in one of the faces of the casing 50 in order to allow passage of the curtain 20.

The second end 20b of the curtain 20 is fixed to the frame 14, for example by bonding. In the example, the second end 20b of the curtain 20 is more particularly fixed to the upper longitudinal edge 14b of the frame 14. The system could however be inverted: the second end 20b of the curtain would then be fixed to the lower longitudinal end 14a of the frame 14.

The first end of the curtain and its support assembly 21, are capable of moving in translation in the longitudinal direction Y - orthogonal to the lateral direction X - under the effect of a drive system (first drive system) described in more detail in the following, and being guided in their translation movement by a guide system (first guide system). The curtain is thus wound or unwound.

The guide system is shown in more detail in figure 5.

It comprises two primary belts 24, 26 each mounted around a pair of pulleys 28a, 28b, and 30a, 30b respectively. For the following, a lower pulley 28a, 30a and an upper pulley 28b, 30b, of each primary belt 24, 26 is designated.

In this case, each belt is of the parallel type, in other words is equipped with two parallel strands extending between the pulleys 28a, 28b; 30a, 30b, the two strands being generally defined in a transverse plane of the glazing.

As illustrated in figure 2, each pulley is situated close to one of the longitudinal edges 14a, 14b of the frame 14, such that each belt 24, 26 extends over substantially the entire height of the glazing 100.

According to a preferred provision represented in the figures, the two belts 24, 26 are defined in two transverse planes symmetric with respect to the transverse symmetry plane of the curtain 20. The guidance is also performed symmetrically on the two sides of the curtain, avoiding blockages related to the unequal winding or unwinding of the curtain in the lateral direction X.

The casing 50, on which the winding axis 22 is mounted, is fixed to a so-called useful strand 24u, 26u of each primary belt 24, 26, for example by screwing or again, preferably, by bonding.

The casing 50 also has two pairs of guide openings 56a, 56b; 58a, 58b each suitable for the passage of a passive strand 24p, 26p of each belt 24, 26 (see figures 2 and 3).

In the described embodiment, the drive system of the winding axis is an electric system driving the primary belts 24, 26.

It comprises an electric motor 40 provided with a remotely activated control 42, a photovoltaic module 44, and a battery 46, housed in the intermediate space 16.

In the example, the motor 40 is arranged between the two lower pulleys 28a, 30a, each of these pulleys being assembled on the motor shaft 48. The two belts 24, 26 are thus driven simultaneously by the electric motor 40.

The upper pulleys 28b, 30b are also assembled on a common shaft 38.

Furthermore, as illustrated in figure 5, the shafts 38, 48 of the pulleys 28a, 28b, 30a, 30b are mounted in this case on a mechanical support structure 32 fixed to the spacer 15, and thus forming a part of the frame 14.

In order to actuate the curtain, the user sends, to the control unit 42 of the electric motor 40, a winding or unwinding command, for example via a Bluetooth connection. The electric motor 40 drives the belts 24, 26 which, by moving, drive the movement of the winding axis 22. The curtain 22 being self-winding, remains permanently taut between its winding axis and the point of attachment of its second end. Through the guidance produced by the belts 24, 26, the curtain is prevented from coming into contact with the sheets 10, 12 of the glazing, and therefore does not risk being damaged.

This example is however not limiting.

According to a possible variant, the casing 50 could for example be omitted, and the winding axis 22 fixed directly to the primary belts 24, 26.

Furthermore, the concealing device is not limited to a self-winding curtain. In particular, a spring winding system of a conventional curtain could be provided.

Figure 6 illustrates a glazing according to a second embodiment. Identical elements to those described in connection with the previous embodiment are designated by the same reference signs as the previously described figures. They are therefore not described again.

The glazing 200 differs from that of the preceding embodiment in that the drive system is a magnetic system.

The drive system thus comprises an outer member 60, in this case a first magnet, suitable for being moved along the outer face of a sheet (in this case reference sign 10) of the glazing, and an inner member, in this case a second magnet 64 fixed on the casing 50 that is rigidly attached to the winding axis 22 of the curtain 20.

In the example, the outer member 60 is mounted to slide along a rectilinear rod forming a guide 62, extending in the longitudinal direction Y, over all or part of the height of the glazing (in general, substantially the entire height thereof).

When the outer member 60 is moved along the sheet 10 by the user, the inner member 64 is rigidly driven, owing to the magnetic attraction force. The winding axis of the curtain 20, fixed to the casing 50, is also moved, driving the movement of the curtain.

Figure 7 illustrates a glazing according to a third embodiment. Identical elements to those described in connection with the previous embodiment are designated by the same reference signs as the previously described figures. They are therefore not described again.

The glazing 300 primarily differs from that of the preceding embodiment in that the means for guiding the first and second end of the concealing curtain comprise two fixed cables 124, 126, extending in the longitudinal direction Y and arranged symmetrically on either side of the median plane of the curtain 20.

In this case, the casing 50 is mounted to slide along said guide cables 124, 126.

In order to avoid friction, the casing can possibly be provided with casters (not illustrated) positioned in contact with the inner face of the sheet 10.

This example is however not limiting.

For example, one of the outer member and the inner member could be formed of a magnetic material, without being a magnet. According to one example, the inner member could consist of the casing 50, produced in a magnetic material. Also, the inner member could consist of the winding axis, produced in a magnetic material.

Figures 8 and 9 illustrate a glazing according to a fourth embodiment. Identical elements to those described in connection with the first embodiment are designated by the same reference signs as in the previously described figures. They are therefore not described again.

The glazing 400 differs from the two preceding embodiments in that the second end 20b of the curtain 20 is not rigidly attached of the frame 14 of the glazing, but rather to a support assembly 70 that can be moved in translation in the longitudinal direction Y by being guided in translation by a second guide system.

In the example, the support assembly is a bar (hereinafter called the support bar), for example a metal bar, extending in the lateral direction X.

The second guide system comprises two secondary belts 74, 76 each mounted around a pair of pulleys 78a, 78b, and 80a, 80b respectively. For the following, a lower pulley 78a, 80a and an upper pulley 78b, 80b, of each secondary belt 74, 76 is designated.

In this case, each belt is of the parallel type, in other words is equipped with two parallel strands extending between the pulleys 78a, 78b; 80a, 80b, the two strands being generally defined in a transverse plane of the glazing.

According to a preferred provision represented in the figures, the two secondary belts 74, 76 are defined in two transverse planes symmetric with respect to the median plane of the curtain 20.

In the particular example represented, the support bar 70 is fixed to a so-called useful strand 74u, 76u of each secondary belt 74, 76, for example by screwing or bonding.

In the example, the drive system of the support bar 70 (second drive system) is an electric system driving the secondary belts 74, 76.

It comprises an electric motor 82, housed in the intermediate space 16. The motor 82 is connected to the battery 46, which is itself connected to the photovoltaic module 44.

In the example, the motor 82 is arranged between the two upper pulleys 78a, 80a, each of these pulleys being assembled on the motor shaft 86. The two belts 74, 76 are thus driven simultaneously by the electric motor 82.

The axes of the lower pulleys 78b, 80b are mounted on the mechanical support structure 32.

The motors 40 and 82 can be controlled by the user, independently of each other. It is therefore possible to move only the first end, only the second end, or the two ends together of the curtain, in one or other direction, according to needs.

In order to actuate the curtain, the user sends, to the control unit 42, a command to move the first and/or the second end, for example via a Bluetooth connection. The curtain 22 being self-winding, it remains permanently taut between its winding axis 22 and the support bar 70. Through the guidance produced by the belts 24, 26, 74, 76, the curtain is prevented from coming into contact with the sheets 10, 12 of the glazing, and therefore does not risk being damaged.

The illustrated example is however not limiting.

For example, the second drive system could also be a magnetic or mechanical system.

Optionally, the support assembly of the second end, fixed to the useful strands of the belts 74, 76, could also have two pairs of guide openings, each suitable for the passage of a so-called passive strand 74p, 76p of each secondary belt.

Claims

RUDE EQUIPPED WITH DARK SHEET

A window (100, 200, 300, 400) consisting of at least two transparent layers (10, 12) connected at their edges by a frame (14) defining between them a space (16), a blackout curtain (20), movable longitudinally (Y) within the gap (16) and a system for activating the curtain, the window being characterized in that a first end (20a) of the curtain (20) is integrated with a winding axis (22) which extending in a lateral direction (X) perpendicular to the longitudinal direction, the curtain (20) being wound around the winding axis (22) and the actuating system including means for driving the first end by longitudinal displacement (Y) and means for controlling the first end by longitudinal displacement (Y).

A window (100, 200, 300, 400) according to claim 1, wherein the curtain is a self-winding curtain.

The pane (100, 200, 300, 400) of claim 2, wherein the curtain (20) comprises a substrate of polyethylene terephthalate (PET) or ethylene polynaphthalate (PEN) coated with a layer of metal or metal oxide, for example indium tin oxide (ITO).

A window (100, 200, 300, 400) according to any one of the preceding claims, wherein the guide means are configured to guide the first end (20a) symmetrically on each side of the center plane of the curtain (20).

A window (100, 200, 300, 400) according to any one of the preceding claims, wherein the control means comprise at least one control cable to which the first end (20a) of the curtain or a support unit (21) is integrated with the end or is movably mounted.

A window (100, 200, 400) according to claim 5, wherein the control means comprise at least two belts (24, 26) arranged to be moved simultaneously, each comprising a utility string forming a control cable, the first end (20a) of the curtain (20) is integrated with the utility strings.

A window (100, 200, 300, 400) according to claim 5 or 6, further comprising a housing (50) containing the winding axis (22) of the curtain (20), said housing (50) being fixed or movably mounted thereon. at least one cable and having a slot (54) extending laterally and crossed by a curtain thickness (20).

A window (200, 300) according to any one of the preceding claims, wherein the driving means comprises at least one outer member (60) arranged to be moved along an outer surface of the window and at least one inner member (64). ) integrated with the first end of the blackout curtain, the outer member (60) and the inner member (64) being arranged to cooperate by magnetic effect.

A window (100, 400) according to any one of the preceding claims, wherein the propellants comprise at least one electric motor (40).

A window (100, 400) according to claim 9, wherein the electric motor is driven by a solar module (44), the electric motor and the solar module being both arranged in the space of the window (16).

A window (100, 200, 300) according to any one of the preceding claims, wherein the second end of the curtain (20b) opposite the first end (20) is integrated with the frame (14).

A window (400) according to any one of claims 1 to 11, wherein the actuating system comprises propellants for the second end of the curtain (20b) opposite the first end (20a), by longitudinal displacement (Y) and control means of the other end of the curtain (20b) by longitudinal displacement (Y).

A window (400) according to claim 12, wherein the control means at the other end (20b) comprises at least one secondary control cable to which the other end (20b) of the blackout curtain or a support unit (70) is integrated with the end or movably mounted.

A window (400) according to claim 12 or 13, wherein the control means for the other end comprises at least two secondary belts (74, 76) arranged to be moved simultaneously and each comprising a utility string forming a secondary control cable, the other end (20b) of the blackout curtain being integrated with the utility strings.