DE102017131292B4 - Sunshade arrangement with retractable heat-reflecting sunshade - Google Patents

Abstract

A sunshade arrangement (100) set up for mounting inside an at least partially translucent cover (210) of a roof structure of a building, the sunshade arrangement comprising a shielding made of reflective material, the shielding, in particular in the form of a sheet, comprising any component from the group comprising:- aluminum fibers intertwined with plastic fibers;- a metallized thin film and fabric composite;- a direct-metallized fabric; the sunshade assembly (100) having guide rails (122a,b) comprising one or more bristle-like strips adapted to provide resistance to rollers of the sunshade assembly (100) when outriggers (113) of the sunshade assembly (100) are in the guide rails (122a,b).

Description

TECHNICAL AREA

The invention relates to sun protection. More particularly, this invention relates to a retractable sunshade for a canopy, porch, patio, deck or the like.

BACKGROUND

Sun protection is commonly used to shade outdoor living areas such as decks or a porch in front of a home. In many climate zones there is a growing need to cover an outdoor living area with a translucent covering. A disadvantage is that the air under the cover can heat up too much. In warm weather conditions in particular, this can cause considerable inconvenience to residents. Direct (ultraviolet) sunlight also contributes to damage to e.g. plastic furniture and/or fading of fabric colors of the furniture. An alternative solution is to provide a retractable sunshade which is extended only when shading is required and which is retracted when exposure to sunlight or a view of the sky is desired.

An example of such a retractable sun protection is in the patent application US 2013/0180667 A1 of Westgarth, which is summarized as a retractable sunshade having a boom-mounted fabric section that engages a track at an intermediate position of the boom, and a flexible boom-mounted stretching element for moving the boom along the track, e.g Extending and retracting the sun protection.

Considering that one would like to be protected from rain, wind and other weather influences even when the sunshade is retracted, combinations of a window or a transparent covering with a retractable sunshade have also been proposed.

Such an example is disclosed in the European patent application EP 0123226 A1 from Home & Castle Inc., which is summarized as a system having a pair of parallel tracks, sunshade sliders sliding along the tracks, and a flexible, foldable, stretchable sunshade movable along the tracks. The sun protection can be operated manually or motorized with a cord.

A disadvantage of the current solutions is that the area under the translucent cover, such as a glass cover, is already heated with comparatively little sunlight. Regular sunshade units are either fully opaque to block all solar radiation, or at least partially translucent to allow at least some light to enter the area beneath the cover. At the same time, however, a comparatively large amount of solar energy can penetrate into the area. Darkening the area involves a significant loss of a sense of luxury and may even force occupants to use additional light sources to illuminate the area, which is not energy efficient. Merely darkening with a sunshade screen (sheet) will not prevent thermal radiation from entering the area.

Given that current translucent sunshade units do not block solar energy, such as infrared light, or even heat themselves and subsequently radiate heat to the area under the sunshade unit, there is a need for an improved way of warming up the area under a translucent cover to prevent without darkening the area, and to provide maximum comfort and a feeling of luxury.

The following publications relate to sunshade assemblies or related components in general: DE 36 04 253 A1 , DE 298 16 310 U1 , JP 2010-65 513 A , U.S.A. 4,683,933 , EP 0 770 757 B2 , U.S. 2013/01 80 667 A1 , EP 0 123 226 Al, DE 37 35 690 Al, DE 10 2012 002 954 B4 , DE 20 2013 007 156 U1 .

DISCLOSURE OF THE INVENTION

It is an object of the present invention to provide a retractable sunshade assembly which can be mounted under a translucent covering of a canopy, porch, patio, deck or the like.

It is a further object to provide a sunshade assembly which prevents heat from entering an area under the cover as much as possible. It is still a further object of the invention to provide a system which allows easy installation and simple, reliable and consistent operability of the sunshade assembly and which curbs energy consumption.

The object is achieved by providing a sun protection arrangement mounted inside an at least partially translucent covering of a roof structure of a building, whereby the sunshade arrangement comprises a shield (sheet) made of heat-reflecting material, in particular with the shield being configured as a sheet. The term “shielding (sheet)” is to be understood as shielding, in particular in the form of a sheet.

1. 1. Eine Sonnenschutzanordnung eingerichtet zur Montage im Inneren einer zumindest teilweise transluzenten Abdeckung einer Dachkonstruktion eines Gebäudes, dadurch gekennzeichnet, dass die Sonnenschutzanordnung eine Abschirmung aus reflektierendem Material umfasst.
2. 2. Die Sonnenschutzanordnung nach Absatz 1, wobei die Abschirmung zumindest teilweise transluzent ist.
3. 3. Die Sonnenschutzanordnung nach Absatz 1 oder 2, wobei die Abschirmung aus flexiblem Material hergestellt ist.
4. 4. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, wobei die Abschirmung eingerichtet ist zum Reflektieren von mehr als 50% von Infrarotlicht.
5. 5. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, wobei die Abschirmung eingerichtet ist zum Reflektieren von mehr als 85% von Sonnenenergie.
6. 6. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, wobei der Schattierungskoeffizient der Abschirmung zwischen 0.15 und 0.1 beträgt.
7. 7. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, wobei die Abschirmung zumindest teilweise Opazität bezüglich sichtbarem Licht liefert.
8. 8. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, wobei die Abschirmung eine Offenheit für sichtbares Licht zwischen 3 und 10 Prozent liefert.
9. 9. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, wobei die Dicke der Abschirmung (sheet) zwischen 0.1 und 0.3mm beträgt.
10. 10. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, wobei die Abschirmung ein Gewebe umfasst, wie z.B. ein Fasergewebe.
11. 11. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, wobei die Abschirmung (sheet) Aluminiumfasern verflochten mit Kunststoffasern umfasst.
12. 12. Die Sonnenschutzanordnung nach Absatz 11, wobei die Aluminiumfasern im Wesentlichen zwei Drittel der Abschirmung (sheet) umfassen, und wobei die Kunststoffasern im Wesentlichen ein Drittel der Abschirmung (sheet) umfassen.
13. 13. Die Sonnenschutzanordnung nach Absatz 11 oder 12, wobei die Kunststoffasern Polyethylen-Terephthalat (PET)-Fasern umfassen.
14. 14. Bei der erfindungsgemäßen Sonnenschutzanordnung umfasst die Abschirmung (sheet) eine beliebige Komponente aus der Gruppe umfassend:
    • - Aluminiumfasern verflochten mit Kunststoffasern;
    • - einen Verbund aus metallisiertem dünnem Film und Gewebe;
    • - ein direkt-metallisiertes Gewebe.
15. 15. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, wobei die Abschirmung (sheet) eingerichtet ist, durch Falten oder Rollen der Abschirmung (sheet) einfahrbar zu sein.
16. 16. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, wobei die Sonnenschutzanordnung ferner umfasst:
    • - ein fixes Ende der Abschirmung (sheet), befestigt an einem nahen Ende der Sonnenschutzanordnung, und ein freies Ende der Abschirmung (sheet), welches eingerichtet ist, in Längsrichtung hin zum beziehungsweise weg vom entfernten Ende der Sonnenschutzanordnung ausgefahren oder eingefahren zu werden;
    • - mehrere Ausleger, jeder befestigt an einer von mehreren Sektionen der Abschirmung (sheet), wodurch die mehreren Ausleger in Querrichtung positioniert werden und wodurch jeder Ausleger ein linkes Ende und ein rechtes Ende und eine Laufrolle am linken und rechten Ende aufweist;
    • - eine linke und rechte Führungsschiene eingerichtet zum Stützen und zum verschiebbaren Eingreifen in das linke und rechte Ende der jeweiligen mehreren Ausleger, wodurch die linke und rechte Führungsschiene konfiguriert sind zum Führen von Laufrollen der mehreren Ausleger vom nahe Ende der Sonnenschutzanordnung zum entfernten Ende der Sonnenschutzanordnung und vice versa;
    • - einen Rahmen eingerichtet zum Stützen der linken und rechten Führungsschiene;
    • - eine linke und rechte Antriebsrolle jeweils positioniert am nahen Ende der linken und rechten Führungsschiene;
    • - eine Endlos-Kordel, welche in die antreibenden und angetriebenen Rollen eingreift und in einem dazugehörigen die Kordel führenden Teil jeder der Führungsschienen positioniert ist;
    • - Mittel zum unbeweglichen Sichern der Kordel am freien Endteil der Abschirmung (sheet), und verwendet zum Ausfahren oder Einfahren der Abschirmung mittels der Antriebsrollen;
    • - ein Antriebssystem umfassend einen Motor zum Rotieren der Antriebsrollen in einer ersten Richtung, was ein Ziehen der Kordel zum nahen Ende der Führungsschienen oder zum entfernten Ende der Führungsschienen herbeiführt.
17. 17. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, wobei das Antriebssystem eine Steuereinheit und eine Speichereinheit umfasst, wodurch die Steuereinheit eingerichtet ist zum Bestimmen einer Startposition der Abschirmung (sheet) am nahen Ende der Sonnenschutzanordnung, wodurch die Steuereinheit ferner eingerichtet ist zum Detektieren wann das freie Ende der Abschirmung (sheet) das entfernte Ende der linken und/oder rechten Führungsschiene erreicht hat, wodurch die Steuereinheit die Anzahl der Drehungen des Motors in der Speichereinheit ablegt, und wodurch die abgelegte Anzahl der Drehungen die Anzahl der Drehungen des Motors für ein nachfolgendes Ziehen der Kordel zum entfernten Ende der Führungsschiene bestimmt.
18. 18. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, wobei die Sonnenschutzanordnung eingerichtet ist, mit einer Neigung zwischen 0 und 21 Grad positioniert zu werden.
19. 19. Die Sonnenschutzanordnung nach Absatz 11, wobei die Sonnenschutzanordnung eingerichtet ist, mit einer Neigung zwischen 0 und 12 Grad positioniert zu werden.
20. 20. Bei der erfindungsgemäßen Sonnenschutzanordnung umfassen die Führungsschienen einen oder mehrere borstenartige Streifen, die eingerichtet sind zum Liefern von Widerstand gegen die Laufrollen, wenn die Ausleger in den Führungsschienen geführt werden.

The invention is summarized in the following paragraphs.

1. Claims 1. A sunshade arrangement set up for mounting inside an at least partially translucent cover of a roof structure of a building, characterized in that the sunshade arrangement comprises a screen made of reflective material.
2. 2. The sunshade assembly of paragraph 1, wherein the shield is at least partially translucent.
3. 3. The sunshade assembly of paragraph 1 or 2, wherein the shield is made of flexible material.
4. 4. The sunshade assembly of any preceding paragraph, wherein the shield is configured to reflect greater than 50% infrared light.
5. 5. The sunshade assembly of any preceding paragraph, wherein the shade is configured to reflect greater than 85% of solar energy.
6. 6. The sunshade assembly of any preceding paragraph, wherein the shading coefficient of the shield is between 0.15 and 0.1.
7. 7. The sunshade assembly of any preceding paragraph, wherein the shield provides at least partial opacity to visible light.
8. 8. The sunshade assembly of any preceding paragraph, wherein the shield provides a visible light openness of between 3 and 10 percent.
9. 9. The sunshade assembly of any preceding paragraph, wherein the sheet thickness is between 0.1 and 0.3mm.
10. 10. The sunshade assembly of any preceding paragraph, wherein the shield comprises a fabric, such as a fibrous fabric.
11. 11. The sunshade assembly of any preceding paragraph, wherein the sheet comprises aluminum fibers interwoven with plastic fibers.
12. 12. The sunshade assembly of paragraph 11, wherein the aluminum fibers comprise substantially two-thirds of the sheet and wherein the plastic fibers comprise substantially one-third of the sheet.
13. 13. The sunshade assembly of paragraph 11 or 12, wherein the plastic fibers comprise polyethylene terephthalate (PET) fibers.
14. 14. In the sun protection arrangement according to the invention, the shielding (sheet) comprises any component from the group consisting of:
    • - aluminum fibers intertwined with synthetic fibers;
    • - a composite of metallized thin film and fabric;
    • - a direct-metallized fabric.
15. 15. The sunshade assembly of any preceding paragraph, wherein the sheet is configured to be retractable by folding or rolling the sheet.
16. 16. The sunshade assembly of any preceding paragraph, the sunshade assembly further comprising:
    • a fixed sheet end attached to a proximal end of the sunshade assembly and a free sheet end adapted to be longitudinally extended or retracted toward and away from the distal end of the sunshade assembly;
    • - a plurality of cantilevers, each attached to one of a plurality of sections of the sheet, whereby the plurality of cantilevers are positioned transversely and whereby each cantilever has a left end and a right end and a roller at the left and right ends;
    • - a left and right guide rail configured to support and slidably engage the left and right ends of the respective plurality of outriggers, whereby the left and right guide rails are configured to guide casters of the plurality of outriggers from the near end of the sunshade assembly to the far end of the sunshade assembly and vice versa;
    • - a frame arranged to support the left and right guide rails;
    • - left and right drive rollers positioned at the proximal end of the left and right guide rails, respectively;
    • - an endless cord which engages the driving and driven pulleys and is positioned in a respective cord-guiding part of each of the guide rails;
    • - means for immovably securing the cord to the free end part of the sheet, and used for extending or retracting the sheet by means of the drive rollers;
    • - a drive system comprising a motor for rotating the drive rollers in a first direction, causing the cord to be pulled towards the near end of the guide rails or towards the far end of the guide rails.
17. 17. The sunshade assembly according to any one of the preceding paragraphs, wherein the drive system comprises a control unit and a memory unit, whereby the control unit is configured to determine a starting position of the shield (sheet) at the near end of the sunshade assembly, whereby the control unit is further configured to detect when the free end of the sheet has reached the far end of the left and/or right guide rail, whereby the control unit stores the number of turns of the motor in the memory unit, and the stored number of turns indicates the number of turns of the motor for a subsequent one pulling the cord to the far end of the guide bar.
18. 18. The sunshade assembly of any preceding paragraph, wherein the sunshade assembly is adapted to be positioned at a tilt of between 0 and 21 degrees.
19. 19. The sunshade assembly of paragraph 11, wherein the sunshade assembly is adapted to be positioned at a pitch of between 0 and 12 degrees.
20. 20. In the sunshade assembly according to the invention, the guide rails comprise one or more bristle-like strips arranged to provide resistance against the rollers when the outriggers are guided in the guide rails.

character list

• 1 zeigt eine perspektivische Ansicht eines Ausführungsbeispiels der erfundenen Sonnenschutzanordnung, eingebaut unterhalb einer Abdeckung einer Veranda.
• 2 zeigt eine Draufsicht eines Ausführungsbeispiels der erfundenen Sonnenschutzanordnung, wobei sich der Sonnenschutz in einer offenen, eingefahrenen Position befindet.
• 3 zeigt eine perspektivische Ansicht eines Ausführungsbeispiels der erfundenen Sonnenschutzanordnung, wobei sich der Sonnenschutz in einer geschlossenen, ausgefahrenen Position befindet.
• 4 zeigt eine sektionale Seitenansicht eines Ausführungsbeispiels der erfundenen Sonnenschutzanordnung, wobei sich der Sonnenschutz in einer offenen, eingefahrenen Position befindet.

The figures show views of exemplary embodiments according to the present invention.

• 1 Figure 13 is a perspective view of an embodiment of the invented sunshade assembly installed beneath a porch cover.
• 2 Figure 12 shows a plan view of an embodiment of the invented sunshade assembly with the sunshade in an open, retracted position.
• 3 12 is a perspective view of an embodiment of the invented sunshade assembly with the sunshade in a closed, deployed position.
• 4 Figure 12 shows a sectional side view of an embodiment of the invented sunshade assembly with the sunshade in an open, retracted position.

DETAILED DESCRIPTION

The invention will now be described by the following aspects and exemplary embodiments with reference to the figures.

The invention provides a sunshade assembly that can be mounted beneath a translucent roof covering. This is particularly useful when the cover is made of glass without any heat reflection measures. These measures include a heat reflective layer/coating or electrochromic glass. These solutions are rather expensive and usually not available in existing roof coverings. The invented sun protection arrangement, on the other hand, is very suitable for mounting under existing covers made of transparent glass or translucent polycarbonate. As a result, a comparatively affordable and flexible solution is proposed by the invention.

The invention provides a new heat-reflecting and preferably partially shading sun protection. This prevents infiltration of heat, and in particular solar energy, from the outside into the area under the cover (hereinafter referred to as "room"). We examined the customer requirements regarding shading of the room and concluded that the specifications at least include that a sun shading system should be flexible, i.e. the user should be able to choose whether the room should be shaded or not. In addition, the room should preferably not be completely darkened, as this will be detrimental to the holistic idea of a translucent roof covering.

Finally, it is preferred that the shading quality is such that heat is prevented from entering the room as much as possible when it is hot outside and that the heat is retained when it is cold outside.

We have examined the optimal characteristics of a sheet to be used as a sunshade and have concluded that a sheet provided from a mixture of aluminum fibers and plastic fibers gives an optimal result.

The preferred configuration includes two-thirds being made from the aluminum fibers and one-third from the plastic fibers. Metals other than aluminum can be used but are more difficult to process or have less desirable characteristics. The plastic is preferably polyethylene terephthalate (abbreviated as PET), which is easy to manufacture and is an excellent water and moisture barrier material and has sufficient elongation strength and flexibility when used as a thread.

The preferred thickness of the shielding (sheet) is between 0.1 and 0.3mm, more preferably 0.2mm. This provides a good balance between maximum heat reflection and minimum thickness, weight and material consumption. Minimizing the weight of the sunshade sheet minimizes the load on the sunshade assembly and reduces the weight of the product, which is sold separately as a spare part product. Minimizing the thickness reduces the space required when pulling the sunshade into an enclosure. Minimizing material consumption reduces production costs.

The sunshade made from the preferred material in the preferred thickness provides a visible light reflectance of about 70-75%, and a solar energy rejection of about 85-90% and a shading coefficient of about 0.12. To provide a comparison with other shading methods, a small table of typical shading coefficients (SC) is shown below. fenestration SK single glazing 1.00 ¼" heat absorbing glazing 0.66 Common inside white sun protection 0.40 Heavy shadow from tree 0.25 Outside dark canvas awning 0.15 Invented sun protection 0.12

Referring now to the figures, FIG 1 14 is a perspective view of one embodiment of the invented sunshade assembly 100 installed beneath a decking of a porch 200, where the porch includes a back beam 201 connecting the canopy to a back wall 300. FIG. The porch 200 is supported by vertical front supports 204a,b. Side supports 202a,b of the porch extend to the front end and are connected to the front support 203 of the porch. The canopy is covered by a cover 210 which may be made of translucent or transparent glass or polycarbonate.

2 12 shows a plan view of an embodiment of the invented sunshade assembly 100 with the sunshade 101a,b in an open, retracted position. The figure shows a double sunshade 101a,b. Because the system is modular, the sunshade assembly can be expanded by adding more sunshade assemblies. As a result, the number of sun protection units arranged next to one another can depend on the area to be covered. The respective sunshade 101a,b is in a retracted position toward the proximal end 120 of the sunshade assembly. The free ends 102a,b are moved away from the front end 121. The proximal end is usually located close to the wall to which the covering is attached. The sun protection arrangement 100 comprises a frame which consists of a rear support 110, side supports 111a,c, a central support 111b and a front support 112. The side supports 111a,c and the central support 111b can comprise guide rails 122a,b (see 3 ), through which the cantilevers 113 (see 4 ) of the respective sunshade 101a,b.

3 12 is a perspective view of one embodiment of the invented sunshade assembly 100 with the sunshade 101a in a closed, deployed position. The free end 102a has been moved to abutting the front end 121 position. A housing at the near end houses a motor for causing the sunshade to move toward the front end 121 .

4 12 shows a sectional side view of one embodiment of the invented sunshade assembly 100 with the sunshade 101a in an open, retracted position. The figure shows how individual sunshade sections are folded to take up a minimum of space. Each section of the sunshade is separated by a boom 113 which is provided with rollers on its sides, the rollers being, for example, small in the guide rails 122a,b of the carrier 111a,b,c are running wheels. The sections of the sunshade sag downwards due to the force of gravity. When the sunshade is extended, the sections are gradually straightened. When fully extended the sunshade forms a substantially flat sheet and the sections will remain straight under slight tension.

Another element of the invention includes one or more bristle-like strips in the guide rails 122a,b. These bristling strips may be positioned at specific locations along the length of guide rails 122a,b or may cover the entire length of guide rails 122a,b from the start of guide rails 122a,b to the end where outriggers 113 are guided. This solution has proved particularly advantageous for keeping the booms in a stable position and for straightening the sunshade sections. The bristle-like strips prevent, among other things, gravity from having the effect that the folding and unfolding of the sunshade sections is random (especially when the sunshade assembly is positioned at a tilt). Thus, folding and unfolding control is greatly increased and the result is a straight and evenly distributed sunshade along the entire length of the guide rails 122a,b. This in turn prevents heat and/or light leakage through the sunshade due to wrinkles or not fully straightened sunshade sections. Particularly in a partially retracted condition, without the bristle-like strips, the sunshade may exhibit irregularities in the folded position or in the folding.

The movement of the outriggers 113 is brought about by moving the front free end of the sunshade towards the front end 110. A motor (not shown) having a spindle 131 is housed in a housing 130. As shown in FIG. The spindle drives a drive pulley which in turn drives a cord 132 which drives a driven pulley and which moves the front free end of the sunshade. Instead of a motor driving the driven roller, manual actuation can alternatively be provided.

Although the invented sunshade assembly is preferably mounted beneath a canopy, the sunshade assembly is also suitable for a vertical or near-vertical orientation. It has been discovered that the sunshade assembly can be mounted under a canopy at a pitch of approximately 0 to 12 degrees. A more preferred inclination is between 6 and 10 degrees, such as 8 degrees. This allows optimal control of the retraction and extension of the sunshade, and fits very well under a canopy attached to a building of similar magnitude pitch. The slope is usually selected based on a compromise of maximized space, practicality of the space available, and ability to drain stormwater. Since our invented sunshade arrangement is very suitable for spare part assembly, it fits very well with existing roof constructions.

It should be noted that the above embodiments illustrate rather than limit the invention and that a person skilled in the art will be able to devise many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed in parentheses shall not be construed as limiting the claims. The use of the verb "comprise" and its conjugations does not exclude the presence of elements or sequences of steps other than those specified in the claims. The term "and/or" includes all conceivable combinations of one or more of the associated listed items. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The article "the" preceding an element does not exclude the presence of a plurality of such elements. In the device claim enumerating several means, several of these means can be embodied by one and the same piece of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Claims (17)

A sunshade arrangement (100) set up for mounting inside an at least partially translucent cover (210) of a roof structure of a building, the sunshade arrangement comprising a shielding made of reflective material, the shielding, in particular in the form of a sheet, comprising any component from the group comprising: - aluminum fibers intertwined with plastic fibers; - a composite of metallized thin film and fabric; - a direct-metallized fabric; the sunshade assembly (100) having guide rails (122a,b) comprising one or more bristle-like strips adapted to provide resistance to rollers of the sun NENschutzanordnung (100), when boom (113) of the sun protection arrangement (100) in the guide rails (122a, b) are performed. The sun protection arrangement (100) according to claim 1 , characterized in that the shield is at least partially translucent. The sun protection arrangement (100) according to claim 1 or 2 , characterized in that the shield is made of flexible material. The sunshade assembly (100) according to any one of the preceding claims, characterized in that the shield is arranged to reflect more than 50% of infrared light. The sunshade assembly (100) of any preceding claim, characterized in that the shield is configured to reflect greater than 85% of solar energy. The sunshade assembly (100) of any preceding claim characterized in that a shading coefficient of the shield is between 0.15 and 0.1. The sunshade assembly (100) of any preceding claim characterized in that the shield provides at least partial opacity to visible light. The sunshade assembly of any preceding claim characterized in that the shield provides a visible light openness of between 3 and 10 percent. The sun protection arrangement (100) according to one of the preceding claims, characterized in that the thickness of the shielding, in particular in the configuration as a sheet, is between 0.1 and 0.3 mm. The sunshade assembly (100) of any preceding claim, characterized in that the shield comprises a fabric, such as a fibrous fabric. The sun protection arrangement (100) according to claim 1 , characterized in that the aluminum fibers comprise essentially two-thirds of the shielding, in particular in the form of a sheet, and in that the plastic fibers essentially comprise one-third of the shielding (sheet). The sun protection arrangement (100) according to claim 1 or 11 , characterized in that the plastic fibers comprise polyethylene terephthalate fibers. The sun protection arrangement (100) according to one of the preceding claims, characterized in that the shielding, in particular in the configuration as a sheet, is set up so that it can be retracted by folding or rolling the shielding. The sunshade assembly (100) according to any one of the preceding claims, characterized in that the sunshade assembly (100) further comprises: - a fixed end of the shield, in particular in the form of a sheet, attached to a proximal end (120) of the sunshade assembly (100), and a shield free end (102a) adapted to be longitudinally extended or retracted toward or away from a distal end (121) of the sunshade assembly (100); - a plurality of cantilevers (113), each attached to one of a plurality of sections of the shield, whereby the plurality of cantilevers (113) are positioned transversely and whereby each cantilever (113) has a left end and a right end and a roller at the left and right ends having; - left and right guide rails (122a,b) configured to support and slidably engage left and right ends of the respective plurality of outriggers (113), whereby the left and right guide rails (122a,b) are configured to guide casters of the a plurality of cantilevers (113) from the proximal end (120) of the sunshade assembly (100) to the distal end (121) of the sunshade assembly (100) and vice versa; - a frame (110, 111a,c, 111b, 112) arranged to support the left and right guide rails (122a,b); - left and right drive rollers positioned at a proximal end of the left and right guide rails (122a,b), respectively; - an endless cord (132) engaging the driving and driven drive pulleys and positioned in a respective cord (132) guiding portion of each of the guide rails (122a,b); - means for immovably securing the cord (132) to a free end portion of the screen and used to extend or retract the screen by means of the drive rollers; - a drive system comprising a motor for rotating the drive rollers in a first direction causing the cord (132) to be pulled towards the near end of the guide rails (122a,b) or towards a far end of the guide rails (122a,b). The sunshade arrangement (100) according to any one of the preceding claims, characterized in that a/the drive system of the sunshade arrangement (100) comprises a control unit and a memory unit, whereby the control unit is set up to determine a starting position of the shield, in particular in the form of a sheet, am / at a proximal end (120) of the sunshade assembly (100), whereby the control unit is further arranged to detect when the free end of the shield has reached a/the distal end of the left and/or right guide rail (122a,b), whereby the control unit stores the number of rotations of a motor of the drive system in the storage unit, and whereby the stored number of rotations indicates the number of rotations of the motor for subsequent pulling of a cord (132) of the sunshade assembly (100) to the far end of the guide rail (122a,b) determined. The sunshade assembly (100) according to any one of the preceding claims, characterized in that the sunshade assembly (100) is adapted to be positioned at a tilt of between 0 and 21 degrees. The sun protection arrangement (100) according to Claim 16 , characterized in that the sunshade assembly (100) is adapted to be positioned with a tilt of between 0 and 12 degrees.

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