DE102017131292A1 - Sun protection arrangement with retractable heat-reflecting sunscreen - Google Patents

Abstract

The invention provides a retractable sunshade assembly that can be mounted beneath a translucent roof cover of transparent glass or translucent polycarbonate. As a result, an affordable and flexible solution is proposed by the invention. The invention provides a new heat-reflecting and partially shading sunscreen. This prevents heat, and in particular solar energy, from entering the area under the cover from the outside.

Description

TECHNICAL AREA

The invention relates to a sunscreen. In particular, this invention relates to a retractable sunshade for a canopy, porch, patio, deck or the like.

BACKGROUND

Sunscreen is commonly used to shade outdoor living areas such as outdoor areas. Decks or a porch used in front of a house. In many climatic zones, there is an increasing need to cover an outdoor living area by means of a translucent cover. A disadvantage is that the air under the cover can overheat. In particular, in warm weather conditions, this can lead to considerable inconvenience to the residents. Direct (ultraviolet) sunlight also contributes to the damage of e.g. Plastic furniture and / or to fade fabric colors of the furniture. An alternative solution is to provide a retractable sunshade, which is only deployed when shading is needed, and which is retracted when one wishes to receive sunlight or to see the sky.

An example of such a retractable sunscreen is in the patent application US 2013/0180667 A1 by Westgarth, which is summarized as a retractable sunshade having a boom mounted tissue section which engages a track at an intermediate position of the boom, and a flexible boom mounted draw member for moving the boom along the track Extending and retracting the sunshade.

Given that you want to be protected even with retracted sunscreen from rain, wind and other weather conditions, combinations of a window or a transparent cover with a retractable sunscreen have been proposed.

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

A disadvantage of the current solutions is that, even with comparatively little sunlight, the area under the translucent cover, e.g. a glass cover, is heated. Regular sun protection units are either completely opaque to block all solar radiation, or at least partially translucent, to allow at least some light to enter the area under the cover. At the same time, however, a comparatively large amount of solar energy can penetrate into the area. Dimming the area involves a significant loss of luxury and may even force residents to use additional light sources to illuminate the area, which is not energy efficient. Only a darkening by means of a sunshield (sheet) does not prevent heat radiation enters the area.

In view of the fact that current translucent sunscreen units have solar energy, such as e.g. Infrared light, not blocking or even heating itself and subsequently radiate heat to the area under the sun protection unit, there is a need for an improved way to prevent warming of the area under a translucent cover without darkening the area, and maximum comfort and to provide a feeling of luxury.

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 cover of a canopy, porch, patio, deck or the like. It is another object to provide a sunshade assembly which prevents heat as much as possible from entering an area under the cover. It is still another object of the invention to provide a system which allows easy installation and easy, reliable and consistent operability of the sunshade assembly, and which minimizes energy consumption.

The object is achieved by providing a sunshade assembly mounted inside an at least partially translucent cover of a roof structure of a building, whereby the sunshade assembly comprises a sheet of heat-reflecting material.

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, dadurch gekennzeichnet, dass die Abschirmung zumindest teilweise transluzent ist.
3. 3. Die Sonnenschutzanordnung nach Absatz 1 oder 2, dadurch gekennzeichnet, dass die Abschirmung aus flexiblem Material hergestellt ist.
4. 4. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, dadurch gekennzeichnet, dass die Abschirmung eingerichtet ist zum Reflektieren von mehr als 50% von Infrarotlicht.
5. 5. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, dadurch gekennzeichnet, dass die Abschirmung eingerichtet ist zum Reflektieren von mehr als 85% von Sonnenenergie.
6. 6. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, dadurch gekennzeichnet, dass der Schattierungskoeffizient der Abschirmung zwischen 0.15 und 0.1 beträgt.
7. 7. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, dadurch gekennzeichnet, dass die Abschirmung zumindest teilweise Opazität bezüglich sichtbarem Licht liefert.
8. 8. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, dadurch gekennzeichnet, dass die Abschirmung eine Offenheit für sichtbares Licht zwischen 3 und 10 Prozent liefert.
9. 9. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, dadurch gekennzeichnet, dass die Dicke der Abschirmung (sheet) zwischen 0.1 und 0.3mm beträgt.
10. 10. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, dadurch gekennzeichnet, dass die Abschirmung ein Gewebe umfasst, wie z.B. ein Fasergewebe.
11. 11. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, dadurch gekennzeichnet, dass die Abschirmung (sheet) Aluminiumfasern verflochten mit Kunststoffasern umfasst.
12. 12. Die Sonnenschutzanordnung nach Absatz 11, dadurch gekennzeichnet, dass die Aluminiumfasern im Wesentlichen zwei Drittel der Abschirmung (sheet) umfassen, und dass die Kunststoffasern im Wesentlichen ein Drittel der Abschirmung (sheet) umfassen.
13. 13. Die Sonnenschutzanordnung nach Absatz 11 oder 12, dadurch gekennzeichnet, dass die Kunststoffasern Polyethylen-Terephthalat (PET)-Fasern umfassen.
14. 14. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, dadurch gekennzeichnet, dass die Abschirmung (sheet) eine beliebige Komponente umfasst aus der Gruppe umfassend:
    • - einen Verbund aus Aluminiumfolie und -gewebe;
    • - einen Verbund aus metallisiertem dünnem Film und Gewebe;
    • - ein direkt-metallisiertes Gewebe.
15. 15. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, dadurch gekennzeichnet, dass die Abschirmung (sheet) eingerichtet ist, durch Falten oder Rollen der Abschirmung (sheet) einfahrbar zu sein.
16. 16. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, dadurch gekennzeichnet, dass 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 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, dadurch gekennzeichnet, dass 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, dadurch gekennzeichnet, dass die Sonnenschutzanordnung eingerichtet ist, mit einer Neigung zwischen 0 und 21 Grad positioniert zu werden.
19. 19. Die Sonnenschutzanordnung nach Absatz 11, dadurch gekennzeichnet, dass die Sonnenschutzanordnung eingerichtet ist, mit einer Neigung zwischen 0 und 12 Grad positioniert zu werden.
20. 20. Die Sonnenschutzanordnung nach einem der vorhergehenden Absätze, dadurch gekennzeichnet, dass die Führungsschienen einen oder mehrere borstenartige Streifen umfassen, 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. 1. A sunshade assembly adapted for mounting in the interior of an at least partially translucent cover of a roof construction of a building, characterized in that the sunshade assembly comprises a shield of reflective material.
2. 2. The sunshade arrangement according to paragraph 1 , characterized in that the shield is at least partially translucent.
3. 3. The sunshade arrangement according to paragraph 1 or 2 , characterized in that the shield is made of flexible material.
4. 4. The sunshade assembly according to any one of the preceding paragraphs, characterized in that the shield is adapted to reflect more than 50% of infrared light.
5. The sunshade assembly of any one of the preceding paragraphs, characterized in that the shield is arranged to reflect more than 85% of solar energy.
6. 6. The sunshade arrangement according to one of the preceding paragraphs, characterized in that the shading coefficient of the shield is between 0.15 and 0.1.
7. 7. The sunshade assembly according to any one of the preceding paragraphs, characterized in that the shield at least partially provides opacity with respect to visible light.
8. 8. The sunshade arrangement according to one of the preceding paragraphs, characterized in that the shield provides an openness to visible light between 3 and 10 percent.
9. 9. The sunshade assembly according to one of the preceding paragraphs, characterized in that the thickness of the shield (sheet) is between 0.1 and 0.3mm.
10. 10. The sunshade assembly according to any of the preceding paragraphs, characterized in that the shield comprises a fabric, such as a fiber fabric.
11. 11. The sunshade assembly according to any one of the preceding paragraphs, characterized in that the shield (sheet) comprises aluminum fibers intertwined with plastic fibers.
12. 12. The sunshade arrangement according to paragraph 11 , characterized in that the aluminum fibers comprise substantially two thirds of the sheet, and that the plastic fibers comprise substantially one third of the sheet.
13. 13. The sunshade arrangement according to paragraph 11 or 12 , characterized in that the plastic fibers comprise polyethylene terephthalate (PET) fibers.
14. 14. The sunshade assembly of any one of the preceding paragraphs, characterized in that the shield comprises any component selected from the group comprising:
    • - a composite of aluminum foil and fabric;
    • a composite of metallized thin film and tissue;
    • - a direct-metallised fabric.
15. 15. The sunshade assembly according to one of the preceding paragraphs, characterized in that the shield (sheet) is arranged to be retractable by folding or rolling the shield (sheet).
16. 16. The sunshade arrangement according to one of the preceding paragraphs, characterized in that the sunshade arrangement further comprises:
    • a fixed end of the sheet attached to a near end of the sunshade assembly, and a free end of the sheet configured to be extended or retracted longitudinally 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 shield, whereby the plurality of cantilevers are positioned transversely, and whereby each cantilever has a left end and a right end and a caster on the left and right ends;
    • a left and right guide rail adapted for support and slidable engagement in 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 proximal end of the sunshade assembly to the far end of the sunshade assembly and vice versa;
    • a frame adapted to support the left and right guide rails;
    • a left and right drive rollers each positioned at the proximal end of the left and right guide rails;
    • an endless cord which engages the driving and driven rollers and is positioned in an associated cord guiding part of each of the guide rails;
    • Means for immovably securing the cord to the free end portion of the shield, and used for extension or retraction by means of the drive rollers;
    • - A drive system comprising a motor for rotating the drive rollers in a first direction, which causes pulling the cord to the near end of the guide rails or the distal end of the guide rails.
17. 17. The sunshade assembly according to one of the preceding paragraphs, characterized in that the drive system comprises a control unit and a memory unit, whereby the control unit is arranged to determine a start position of the shield at the near end of the sunshade assembly, whereby the control unit is further adapted for Detecting when the free end of the sheet has reached the distal end of the left and / or right guide rail, whereby the control unit stores the number of rotations of the motor in the storage unit, and whereby the stored number of rotations the number of rotations of the motor for subsequent pulling of the cord to the distal end of the guide rail.
18. 18. The sunshade assembly according to any one of the preceding paragraphs, characterized in that the sunshade assembly is arranged to be positioned with a slope between 0 and 21 degrees.
19. 19. The sunshade arrangement according to paragraph 11 , characterized in that the sunshade assembly is arranged to be positioned with a slope between 0 and 12 degrees.
20. 20. The sunshade assembly according to any of the preceding paragraphs, characterized in that the guide rails comprise one or more bristle-like strips adapted to provide resistance to the rollers when the brackets are guided in the guide rails.

list of figures

• 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 embodiments according to the present invention.

• 1 shows a perspective view of an embodiment of the invented sunshade assembly installed below a cover of a porch.
• 2 shows a top view of an embodiment of the invented sunshade assembly, wherein the sunshade is in an open, retracted position.
• 3 shows a perspective view of an embodiment of the invented sunshade assembly, wherein the sunshade is in a closed, extended position.
• 4 shows a sectional side view of an embodiment of the invented sunshade assembly, wherein the sunshade is in an open, retracted position.

DETAILED DESCRIPTION

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

The invention provides a sunshade assembly that can be mounted beneath a translucent roof cover. This is particularly useful when the cover is made of glass without any heat reflection measures. These measures include a heat-reflecting layer / coating or electrochromic glass. These solutions are rather expensive and usually absent in existing roofing. The invented sun protection arrangement, however, is very suitable for mounting underneath existing covers, which are 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 sunscreen. This prevents heat, and especially solar energy, from entering the under-cover area (hereinafter referred to as "room") from the outside. We examined the customer requirements for shading the room and concluded that the specifications at least include that a sunshade system should be flexible, i.e., the user should be able to choose whether or not to shade the room. In addition, the space 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 be 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 investigated the optimal characteristics of a solar shielding sheet and have concluded that one of a mixture of aluminum fibers and Plastic provided shielding (sheet) provides an optimal result.

The preferred configuration comprises two thirds made from the aluminum fibers and one third from the plastic fibers. Metals other than aluminum may 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 which is an excellent water and moisture insulating material and which, when used as a thread, has sufficient tensile strength and flexibility.

The preferred thickness of the sheet is between 0.1 and 0.3 mm, more preferably 0.2 mm. This provides a good balance between maximum heat reflection and minimum thickness, weight and material consumption. Minimizing the weight of the sunshade shield minimizes the load on the sunshade assembly and reduces the weight of the product sold separately as a spare part product. Minimizing the thickness reduces the space required to pull the sunshade into a housing. Minimizing material consumption reduces production costs.

The sunscreen 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. F enestration SK single glazing 1:00 ¼ "heat-absorbing glazing 0.66 Common in white sunscreen 12:40 Strong shadow through tree 12:25 Outside dark tarpaulin awning 12:15 Invented sunscreen 12:12

Now referring to the figures, shows 1 a perspective view of an embodiment of the invented sunshade assembly 100 , built under a cover of a porch 200 , where the porch is a butt carrier 201 Includes the roof covering with a rear wall 300 combines. The porch 200 is by vertical front supports 204a, b supported. side beams 202a, b The porch extend to the front end and are connected to the front porter 203 connected to the porch. The roofing is covered by a cover 210 covered, which may be made of translucent or transparent glass or polycarbonate.

2 shows a plan view of an embodiment of the invented sunshade assembly 100 , where the sunscreen 101a, b in an open, retracted position. The figure shows a double sunscreen 101 B. Since the system is modular, the sunshade assembly can be extended by adding more sunshade assemblies. As a result, the number of sun protection units arranged next to each other can be dependent on the area to be covered. The respective sunscreen 101 , b is in a position retracted to the near end 120 the sunshade arrangement. The free ends 102a, b are moved away from the front end 121 , The near end is usually located close to the wall to which the roof is attached. The sunshade arrangement 100 comprises a frame, which consists of a rear carrier 110 , Side beams 111a, c , a center carrier 111b and a front carrier 112 consists. The side carriers 111a, c and the center carrier 111b can guide rails 122a, b include (see 3 ), through which the boom 113 (please refer 4 ) of the respective sunscreen 101a, b be guided.

3 shows a perspective view of an embodiment of the invented sunshade assembly 100 , where the sunscreen 101 in a closed, extended position. The free end 102 is in one at the front end 121 abutting position has been moved. A housing at the near end takes a motor to cause the movement of the sunshade to the front end 121 on.

4 shows a sectional side view of an embodiment of the invented sunshade assembly 100 , where the sunscreen 101 in an open, retracted position. The figure shows how individual sun protection sections are folded to occupy a minimum of space. Each section of the sunscreen is by a boom 113 separated, which is provided at its sides with rollers, the rollers eg small in the guide rails 122a, b the carrier 111a, b, c running wheels are. The sections of the sunshade hang down due to the gravitational force. When the sunshade is extended, the sections are gradually straightened. When fully extended, the sunshade will form a substantially flat sheet, and the sections will remain straight under light tension.

Another element of the invention includes one or more bristle-like strips in the guide rails 122a, b , These bristle-like strips can be located at specific locations along the length of the guide rails 122a, b be positioned or can the entire length of the guide rails 122a, b from the beginning of the guide rails 122a, b cover to the end where outrigger 113 be guided. This solution has proven to be particularly advantageous for maintaining the boom in a stable position and for straightening the sunshade sections. Among other things, the bristle-like streaks prevent gravitation from having the effect of folding and unfolding the sunshade sections being arbitrary (especially when the sunshade assembly is positioned with an incline). Thus, the control in folding and unfolding is considerably increased, and the result is a straight and evenly distributed sunscreen 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 incompletely straightened sunscreen sections. In particular, in a partially retracted state, the sunscreen, without the bristle-like stripes, may have irregularities in the folded position or when folded.

The movement of the arms 113 is accomplished by moving the front free end of the sunshade toward the front end 110 , A motor (not shown) with a spindle 131 is in a housing 130 added. The spindle drives a drive roller, which in turn is a cord 132 which drives a driven roller and which moves the front free end of the sunshade. Instead of a driven roller driving motor may alternatively be provided a manual operation.

Although the invented sunshade assembly is preferably mounted beneath a roof, the sunshade assembly is also suitable for vertical or near vertical orientation. It has been discovered that the sunshade assembly can be mounted at a slope of about 0 to 12 degrees under a roof. A still more preferred slope is between 6 and 10 degrees, such as 6 to 10 degrees. 8 degrees. This allows optimum control of the sunshade extension and retraction, and fits very well under a roof that is attached to a building of similar incline on the order of magnitude. The slope is usually selected based on a compromise of maximized space, practicality of available space and the ability to drain rainwater. Since our invented sunshade assembly is very well suited for spare parts assembly, it fits very well to existing roof structures.

It should be noted that the above embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, parenthesized reference characters should not be construed as limiting the claims. The use of the verb "comprising" and its conjugations does not exclude the presence of elements or sequences other than those recited in the claims. The term "and / or" includes all conceivable combinations of one or more of the associated listed items. The item "a" or "an" preceding an item does not exclude the presence of a plurality of such items. The item "the" preceding the item does not exclude the presence of a plurality of such items. In the multi-item device claim, several of these means may be embodied by one and the same unit of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures can not be used to advantage.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 2013/0180667 A1 [0003]
• EP 0123226 Al [0005]

Claims (20)

A sunshade assembly (100) adapted for mounting inside an at least partially translucent cover (210) of a roof construction of a building, characterized in that the sunshade assembly comprises a shield of reflective material. The sunshade assembly (100) according to Claim 1 , characterized in that the shield is at least partially translucent. The sunshade assembly (100) according to Claim 1 or 2 , characterized in that the shield is made of flexible material. The sunshade assembly (100) of any 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 one of the preceding claims, characterized in that the shield is arranged to reflect more than 85% of solar energy. The sunshade assembly (100) of any one of the preceding claims, characterized in that a shading coefficient of the shield is between 0.15 and 0.1. The sunshade assembly (100) of any one of the preceding claims, characterized in that the shield provides at least in part opacity with respect to visible light. The sunshade assembly of any one of the preceding claims, characterized in that the shield provides an openness to visible light of between 3 and 10 percent. The sunshade assembly (100) according to any one of the preceding claims, characterized in that the thickness of the shield (sheet) is between 0.1 and 0.3mm. The sunshade assembly (100) of any one of the preceding claims, characterized in that the shield comprises a fabric, such as a fibrous web. The sunshade assembly (100) of any of the preceding claims, characterized in that the shield (sheet) comprises aluminum fibers interlaced with plastic fibers. The sunshade assembly (100) according to Claim 11 , characterized in that the aluminum fibers comprise substantially two thirds of the sheet, and that the plastic fibers comprise substantially one third of the sheet. The sunshade assembly (100) according to Claim 11 or 12 , characterized in that the plastic fibers comprise polyethylene terephthalate fibers. The sunshade assembly (100) of any one of the preceding claims, characterized in that the shield (sheet) comprises any component selected from the group comprising: - a composite of aluminum foil and fabric; a composite of metallized thin film and tissue; - a direct-metallised fabric. The sunshade assembly (100) of any one of the preceding claims, characterized in that the shield (sheet) is arranged to be retractable by folding or rolling the shield (sheet). The sunshade assembly (100) of any one of the preceding claims, characterized in that the sunshade assembly (100) further comprises: a fixed end of the sheet attached to a proximal end (120) of the sunshade assembly (100) and a free one End (102a) of the shield (sheet) configured to be extended or retracted longitudinally toward and away from a distal end (121) of the sunshade assembly (100); a plurality of jibs (113), each attached to one of a plurality of sections of the sheet, whereby the plurality of jibs (113) are positioned transversely, and whereby each jib (113) has a left end and a right end and a pulley on the left and right end; a left and right guide rail (122a, b) adapted to support and slidably engage the left and right ends of the respective plurality of cantilevers (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) adapted to support the left and right guide rails (122a, b); a left and right drive rollers each positioned at a proximal end of the left and right guide rails (122a, b); - an endless cord (132) which engages the driving and driven drive rollers and is positioned in an associated part of each of the guide rails (122a, b) leading to the cord (132); - Means for immovably securing the cord (132) to a free end portion of the sheet, and used for extension or retraction by means of the drive rollers; - A drive system comprising a motor for rotating the drive rollers in a first direction, which causes pulling the cord (132) to the near end of the guide rails (122a, b) or to a distal end of the guide rails (122a, b). The sunshade assembly (100) of one of the preceding claims, characterized in that a drive system of the sunshade assembly (100) comprises a control unit and a memory unit, whereby the control unit is configured to determine a start position of the sheet at a nearby one End (120) of the sunshade assembly (100), whereby the controller is further configured to detect when the free end of the sheet has reached a distal end of the left and / or right guide rail (122a, b), whereby the control unit the number of rotations of one motor of the drive system is stored in the memory unit, and whereby the number of rotations stored reduces the number of rotations of the motor for subsequent pulling of the cord (132) of the sunshade assembly (100) to the distal end of the guide rail (100) 122a, b) determined. The sunshade assembly (100) of any one of the preceding claims, characterized in that the sunshade assembly (100) is arranged to be positioned with a slope between 0 and 21 degrees. The sunshade assembly (100) according to Claim 11 , characterized in that the sunshade assembly (100) is arranged to be positioned at an inclination between 0 and 12 degrees. The sunshade assembly (100) of any one of the preceding claims, characterized in that the guide rail (122a, b) of the sunshade assembly (100) comprises one or more bristle-like strips configured to provide resistance to the sunblind assembly (s) (100) when the cantilevers (113) are guided in the guide rails (122a, b).

Images