Sun protection device for a building

Abstract

Solar protection device for a building. A solar protection device (1) for a building, comprising at least one user-operated solar protection panel (2) and a movement system (5) for the solar protection panel (2), the movement system (5) being configured to allow the solar protection panel (2) to move in at least two non-parallel directions (X, Y), the device (1) being configured so that the shadow cast by the solar protection panel (2) remains substantially fixed, the solar protection panel (2) being moved by the movement system (5) to position itself between the sun and the user according to the position of the sun. Figure for the abbreviation: Fig. 1

Description

Title of the invention: Solar protection device for a building. Technical field.

[0001] The present invention relates to the field of solar protection devices for residential or commercial buildings. Previous technique

[0002] Solar shading devices are essential components of building thermal performance because they help limit solar heat gain in summer. They also contribute to the occupants' visual comfort. During the heating season, solar shading devices are raised to maximize solar heat gain in the building. This can then generate glare, which may lead the user to lower the shading device, thus reducing solar heat gain. This situation is most commonly found in commercial buildings with large glazed areas that are occupied during the day.

[0003] This conflict of use between solar input and visual comfort is known for standard roller shutters due to the lack of progressive shading of the solar protection.

[0004] Furthermore, adjustable louvered sunshades, which are particularly suitable for managing solar gain in the summer season while ensuring the visual comfort of the occupants, are not satisfactory in the winter season because the lower trajectory of the sun requires, in order to guarantee visual comfort, a vertical or almost vertical position of the louvers, which ultimately provides too much shading.

[0005] Semi-transparent interior blinds also exist, but these potentially obscure a large portion of the window and, moreover, generate visual discomfort through diffusion, as the blind becomes a source of light. It is possible to mitigate this problem by increasing the opacity of the blind, but this also tends toward the same result as a roller shutter with excessive opacity.

[0006] The solar protections as described in patent applications FR 3 105 284 and FR 3 105 285 make it possible to limit the shaded area via a horizontal band of variable height and controllable in height, with possible movement only upwards and downwards, along a single axis.

[0007] In patent application EP 2 938 802, a photovoltaic panel is intended to be moved only horizontally.

[0008] Known solar protection devices do not allow for maximizing the view to the outside and solar gains, while providing satisfactory solar protection.

[0009] There is a need to provide sufficient solar protection, while promoting solar gains and views of the outside of the building. Description of the invention

[0010] The invention aims to meet all or part of this need, and it achieves this through a solar protection device for a building, comprising at least one solar protection panel for a user and a system for moving the solar protection panel, the movement system being configured to allow the solar protection panel to be moved in at least two non-parallel directions, the device being configured so that the shadow cast by the solar protection panel remains substantially fixed, the solar protection panel being moved by the movement system to come to position itself between the sun and the user according to the position of the sun.

[0011] The sun protection device according to the invention allows tracking the position of the sun, with regular updates, so that the shadow projected from the panel follows a fixed location, in order to protect a particular area, for example a person's face, a person's upper body, a screen or several computer screens, this list not being exhaustive.

[0012] The device according to the invention thus makes it possible to provide users with satisfactory solar protection, preventing the effects of glare from the sun, without significantly affecting solar gains, which are very useful, particularly during the cold season, to reduce the building's heating consumption.

[0013] The invention is particularly useful for buildings with a large glazed area on the facade, for example facing South, West and East.

[0014] Furthermore, the device according to the invention may not be fixed to a window frame. It may be independent of it. The view to the outside of the building may be enhanced.

[0015] The device according to the invention can complement standard shading systems such as shutters, blinds, slatted sunshades or others.

[0016] The two directions can be coplanar. They can be perpendicular to each other. The solar protection panel can be moved within a plane. Summary of the invention Sun protection panel

[0017] The panel is preferably arranged vertically or substantially vertically.

[0018] The term 'solar protection panel' means any opaque or semi-opaque element capable of preventing the propagation of sunlight. It may take the form of a curtain, a canvas, a screen, or other, this list being non-exhaustive. It may or may not include photovoltaic cells. It may be rigid or flexible. It may be polygonal in shape, in particular rectangular or square, or non-polygonal, for example circular, elliptical, or other, this list being non-exhaustive.

[0019] The dimensions of the solar protection panel can be small. Thus, solar gains can be maximized while obtaining the necessary solar protection, and without unduly affecting the view of the outside of the building.

[0020] A surface area of ​​the solar protection panel may be less than 2500 cm2, or even less than 2200 cm2, or even less than 2025 cm2, better less than 1500 cm2.

[0021] The surface area of ​​the solar protection panel can be greater than 500 cm2, or even greater than 600 cm2, or even greater than 625 cm2, preferably greater than 750 cm2. The surface area can be sufficient to provide shade for a face, the upper body of a person, a screen or several computer screens, for example.

[0022] The device may comprise a single solar protection panel. Alternatively, the device may comprise several solar protection panels, for example two or three solar protection panels.

[0023] A panel can be associated with a user. Each panel can be associated with a user. Each user can control their panel as they wish. The device can protect several users, each independently of the others. Each panel can be controlled autonomously. Each solar protection panel can be controlled independently of the other panels.

[0024] The solar protection panel may be opaque. It may include an opaque portion. It may include a non-opaque portion, for example translucent, particularly above the opaque portion. In this case, the opaque portion may serve as solar protection, and the non-opaque portion may serve as a support for the opaque portion, without obstructing solar gain.

[0025] Alternatively, the solar protection panel may be devoid of a translucent part.

[0026] The solar protection panel may include one or more photovoltaic cells. In this configuration, the solar protection panel can be powered by the photovoltaic cells it incorporates. It can therefore have a self-contained power supply. It can operate without an external power source. It can also include a battery integrated into the panel. The battery can also act as ballast, stabilizing the panel and improving its stability.

[0027] The device can be electrically powered by being connected to the electrical network, or alternatively by means of photovoltaic cells and batteries. Displacement system

[0028] The solar protection panel movement system may include at least one electric motor, in particular a single electric motor or at least two electric motors, in particular several electric motors, for example two, three or four electric motors.

[0029] In one embodiment, the solar protection panel movement system may include at least two electric motors.

[0030] In one embodiment, the solar protection panel movement system may include an electric motor and a clutch system allowing it to move from one axis to the other.

[0031] The movement system is advantageously configured to allow movement of the solar protection panel in two directions in either direction while minimizing the number of cables, pulleys and / or motors.

[0032] In one embodiment, the solar protection panel movement system may include at least one rail configured to allow movement of the solar protection panel in a first direction, in particular a first horizontal direction.

[0033] The rail can be installed at the top of a building opening, for example a glazed window or door, particularly on the ceiling. The rail can preferably be as long as, or even longer than, the width of the opening. It can cover several openings positioned, for example, on the same wall. Alternatively, the rail can be slightly smaller than the opening, with compensation achieved by using a solar shading panel.

[0034] The device may include two rails in the case where the room is intended to accommodate two users and two solar protection panels.

[0035] Alternatively, a single rail can support two sunshade panels. In this case, there can be two controls, one per sunshade panel and one per user. The sunshade panel movement system can include at least one rail configured to allow movement of the sunshade panel in a first direction, in particular a first horizontal direction.

[0036] The system for moving the solar protection panel may include a trolley installed on this rail and movable in translation along it. The trolley may be, in particular, approximately twenty centimeters wide. The trolley may be equipped with guiding means enabling it to move along the entire length of the rail.

[0037] The carriage can be equipped with two pulleys, in particular arranged at its ends. The pulleys can guide each of a cable connected on each side of the rail to the solar protection panel, for example in one embodiment respectively to a motor of the solar protection panel.

[0038] The system for moving the solar protection panel may include at least one cable connected to a motor, or even two cables, each connected to a motor. The cable(s) allow the solar protection panel to be moved in a second direction, in particular perpendicular to the first direction, and in particular a second vertical direction.

[0039] In one embodiment, the solar protection panel movement system may comprise two independent motors, the control of which can be coordinated to allow the solar protection panel to be moved across the width and height of the opening. The two motors may be arranged at opposite ends of the rail, on either side of the carriage.

[0040] In this embodiment, movement in both directions can be combined. For example, to move to the right, the motors rotate at the same speed clockwise, with winding on the right and unwinding on the left. The weight of the panel and the carriage enable this movement. Additionally, to move upwards, the right motor can rotate counterclockwise and the left motor clockwise, always at the same speed.

[0041] Alternatively or additionally, the displacement system can be configured to ensure diagonal displacement of the solar protection panel.

[0042] The motor(s) may be integrated into the solar protection panel. In this embodiment, the solar protection panel movement system comprises at least one electric motor integrated into the solar protection panel.

[0043] This embodiment is useful in the case of an autonomous version of the device, because all the elements consuming and producing energy are grouped on the solar protection panel, which simplifies the device.

[0044] In this configuration, the panel is advantageously weighted by the electric motor(s) and / or the battery(ies), which stabilizes it and improves its stability. Furthermore, the device configuration can be simplified.

[0045] In this case, the solar protection panel can carry the two motors which enable the movements, the battery or batteries, a possible photovoltaic panel, oriented towards the glazing, as well as the electronics to manage the movement of the motors, the charging of the battery and the communication with the control interface.

[0046] In this embodiment, the cables are fixed to the rail at their first end and are each connected to a motor carried by the solar protection panel at their other end.

[0047] In one embodiment, the cables are each connected to a motor carried by the rail at one end, and are fixed to the solar protection panel at their other end.

[0048] The motor(s) can be integrated into the rail. This embodiment is particularly suitable when the device is connected to the electrical grid, as the solar protection panel is then lighter and lacks a motor or battery. In this case, the solar protection panel can be ballasted to improve panel stability, enhance its durability, and allow the system to be moved.

[0049] In one embodiment, the solar protection panel movement system may include a carriage return mechanism. The return mechanism may, in particular, include a spring. The return mechanism may, in particular, be attached at one end to the rail and at the other end to the carriage. The first end of the return mechanism may be attached to an end of the rail opposite the motor.

[0050] In this embodiment, the movements in the two directions can be separated. In this case, the solar protection panel movement system comprises two motors, with one motor activating the panel's movement in the first horizontal direction. The device may include another motor to activate the panel's movement in the second vertical direction. Both motors can be located on the same side of the rail, on the same side of the carriage.

[0051] In another embodiment, the solar protection panel movement system may include a conveyor belt mounted horizontally on a motor and a pulley.

[0052] The motor can be positioned at one end of the rail and the pulley at the other end. The horizontally mounted conveyor belt can move the panel along the first horizontal direction. The device may include a second motor to drive the panel along the second vertical direction. Both motors can be positioned on the same side of the rail, on the same side of the carriage. The second motor can be attached to the conveyor belt, thus enabling horizontal drive of the carriage.

[0053] In another embodiment, the solar protection panel movement system may include a central motor driving a belt mounted on two pulleys that can move in the rail.

[0054] In this embodiment, the solar protection panel may include a rollable fabric strip with an opaque portion and a transparent portion above the opaque portion. The device may include a roller shutter-type winder for controlling the winding of the fabric strip. The winder may be housed in the mobile carriage. The carriage may also house a battery. The fabric strip may carry a weight at its lower end.

[0055] The solar protection device can be configured to be placed inside the building, for example in a room.

[0056] The solar protection device may not be configured to be placed outside the building. It may not be configured to be placed on the building's facade.

[0057] Alternatively, it can be configured to be placed outside the building, for example in front of an opening such as a bay window, window, or door. Control

[0058] The device can be controlled by means of a human-machine interface. This interface can enable wired or wireless communication with a control board for the motor(s), in particular the motor(s) integrated into the solar protection panel. The device can also be controlled directly, for example, by means of a user control interface.

[0059] Alternatively or additionally, the device can be controlled remotely, in particular by means of an application, for example online, or by a wireless control system, or remote control.

[0060] This control interface allows the device to be activated and / or deactivated, and also allows the panel to be initialized to its initial position. This initialization can be manual.

[0061] The user can, for example, define the initial position of the panel, the desired position of the projected shadow, the panel's movement curve, this list is not exhaustive.

[0062] The control interface can also allow the definition of a "summer" position and / or a "window opening" position which can correspond to a position defined manually by the user or by default in an angle in the upper part of the opening, for example.

[0063] The device can be configured to allow the user to define the desired position of the projected shadow.

[0064] This definition can be achieved, for example, manually, depending on the user's position in the room, for example, the office. It can be done using a specific interface, for example, a PC or phone application or a dedicated device. The user can also correct the displacement curve of the panel proposed to correct a possible problem of near or far shading and / or reflection from a neighboring glazed building.

[0065] The movement system can be controlled according to at least one parameter chosen from the following list: building orientation, facade orientation, building location, for example geographical coordinates, date, this list is not exhaustive.

[0066] The movement system is controlled so that the solar protection panel is always placed on its movement plane between the sun and the area to be protected. Brief description of the drawings

[0067] The invention will be better understood upon reading the detailed description that follows, a non-limiting example of its embodiment, and upon examination of the accompanying drawing, in which:

[0068] [Fig-1] Fig. 1 is a schematic and partial front view of a device sun protection according to the invention.

[0069] [Fig.2] The [Fig.2] is a detail view of the [Fig.1].

[0070] [Fig.3] The [Fig.3] is a view analogous to the [Fig.1] of an alternative embodiment.

[0071] [Fig.4] The [Fig.4] is a view analogous to the [Fig.1] of an alternative embodiment.

[0072] [Fig.5] The [Fig.5] is a view analogous to the [Fig.1] of an alternative embodiment.

[0073] [Fig.6] The [Fig.6] is a view analogous to the [Fig.1] of an alternative embodiment. Detailed description

[0074] Figures 1 and 2 illustrate a solar protection device 1 for a building. Figure 1 shows a front view of the solar protection device 1 with a solar protection panel 2 suspended from a rail 6. The solar protection device 1 comprises a solar protection panel 2 and a movement system 5.

[0075] The sunshade panel 2 is designed to protect a user from the sun's rays by projecting a fixed shadow. The sunshade panel 2 is intended to be positioned between the sun and the user according to the sun's position, being moved for this purpose by the movement system 5.

[0076] The solar shading panel 2 can be rigid or flexible and can take various forms, being substantially square in this example. It should be noted that the dimensions of the solar shading panel are small, for example, 40 cm x 40 cm in the illustrated embodiment, which maximizes solar gain while providing the necessary solar protection. The solar shading panel 2 is entirely opaque, having no translucent parts.

[0077] In the example described, the solar protection panel 2 comprises photovoltaic cells. Thus, the solar protection panel is powered by electricity thanks to to the photovoltaic cells it carries, and it has its own power supply. It does not require an external power source. It has a battery integrated into panel 2. The battery also acts as ballast, which helps stabilize the panel and improve its stability.

[0078] The displacement system 5 allows the solar protection panel 2 to be moved in at least two directions that are not parallel to each other, designated by X (horizontal) and Y (vertical).

[0079] The movement system 5 includes a rail 6 installed at the top of an opening O in the building, such as a bay window, a window, or a door. The rail 6 allows the movement of the solar protection panel 2 in the horizontal direction X. The rail is as long as, or even longer than, the width of the opening O.

[0080] A trolley 7 is mounted on the rail 6 and is movable in translation along it. The trolley 7 is equipped with pulleys 8 arranged at the ends, which guide cables 11 connected to the solar protection panel 2.

[0081] The movement system 5 further comprises two motors 9, to allow the movement of the solar protection panel 2 in the horizontal X and vertical Y directions. In this example, the motors 9 are integrated into the solar protection panel 2.

[0082] Figure 2 shows a cross-sectional view of the carriage 7 and the pulleys 8, mounted on the rail 6. The carriage 7 may be approximately 20 centimeters wide. The carriage may be circular, rectangular, or of another shape. The carriage is equipped with guide means enabling it to move along the entire length of the rail. Each pulley 8 guides a cable 11 connected to the solar protection panel 2, in particular each to one of the two motors 9 of the solar protection panel 2. The cable(s) 11 allow the solar protection panel to move in a second direction, in particular perpendicular to the first direction, especially a second vertical direction.

[0083] The control of the two independent motors 9 is coordinated in order to allow the solar protection panel 2 to be moved over the width and height of the opening O. The cables are fixed to the rail 6 at their first end and are each connected to a motor 9 carried by the solar protection panel at their other end.

[0084] In this embodiment, movement along both the X and Y directions is combined. For example, to move to the right, the motors rotate at the same speed clockwise, with winding on the right and unwinding on the left. The weight of the panel and the carriage enable this movement. Additionally, to move upwards, the right motor can rotate counterclockwise and the left motor clockwise, always at the same speed.

[0085] The device can be electrically powered by means of photovoltaic cells and batteries, as described above, or alternatively by being connected to the electrical network, as illustrated in the embodiment of [Fig.3].

[0086] In this embodiment, the cables 11 are each connected to a motor 9 integrated into the rail 6 at one end, and are attached to the solar protection panel 2 at their other end. The two motors 9 are arranged at opposite ends of the rail, on either side of the carriage 6. The solar protection panel 2 is suspended from the rail 6 and is equipped with a ballast 17 for stabilization. This embodiment is particularly suitable when the device is connected to the electrical grid, as the solar protection panel is then lighter and lacks a motor or battery 10.

[0087] In an embodiment illustrated in [Fig. 4], the movement system 5 for the solar shading panel comprises a rail 6, a carriage 7, pulleys 8, cables 11, and a return element 15. The return element 15 for the carriage 7, such as a spring, is fixed to one end of the rail 6 and to one end of the carriage 7. The motors 9 enable the movement of the solar shading panel 2 in the horizontal X and vertical Y directions. The first end of the return element 15 is fixed to one end of the rail opposite the motor 9.

[0088] In this embodiment, the movement along the two directions is separate. A first motor 9 activates the movement of the panel 2 along the first horizontal direction X. A second motor 9 activates the movement of the panel along the second vertical direction Y. The two motors are located on the same side of the rail, on the same side of the carriage.

[0089] In another embodiment illustrated in [Fig. 5], the movement system 5 comprises a rail 6, a carriage 7, pulleys 8, cables 11, and a conveyor belt 18 mounted horizontally on a motor 9 and a pulley 8. The motor 9 is located at one end of the rail 6 and the pulley 8 at the other end of the rail. The conveyor belt 18 is mounted horizontally and allows the panel 2 to move along the first horizontal direction X. The device includes a second motor 9 to activate the movement of the panel 2 along the second vertical direction Y. Both motors 9 are located on the same side of the rail, on the same side of the carriage 7. The second motor is attached to the conveyor belt 18, which allows the horizontal drive of the carriage 7.

[0090] In another embodiment illustrated in [Fig. 6], the solar protection panel 2 comprises a rollable fabric strip with an opaque portion 2a and a transparent portion 2b above the opaque portion. The opaque portion 2a provides solar protection, while the transparent portion 2b maximizes solar gain. The fabric strip carries a weight 17 in its lower portion. The device comprises A roller shutter-type winder 20 controls the winding of the fabric strip. The winder 20 is housed in the mobile carriage 7. The carriage 7 also houses a battery 10. The drive system 5 includes a belt 19 driven by a central motor 9 and mounted on two pulleys 8, to allow the movement of the carriage 7.

Claims

Demands

1. A solar protection device (1) for a building, comprising at least one user solar protection panel (2) and a solar protection panel (2) movement system (5), the movement system (5) being configured to permit the solar protection panel (2) to be moved in at least two non-parallel directions (X, Y), the device (1) being configured so that the shadow cast by the solar protection panel (2) remains substantially fixed, the solar protection panel (2) being moved by the movement system (5) to come into position between the sun and the user according to the position of the sun, the solar protection panel (2) movement system (5) comprising at least one electric motor and at least one rail (6) configured to permit the solar protection panel (2) to be moved in a first direction (X).

2. Solar protection device according to the preceding claim, a surface area of ​​the solar protection panel (2) being less than 2500 cm2, or even less than 2200 cm2, or even less than 2025 cm2, better less than 1500 cm2.

3. A solar protection device according to any one of the preceding claims, comprising several solar protection panels (2), for example two or three solar protection panels (2).

4. Solar protection device according to the preceding claim, each solar protection panel (2) being controlled independently of the other panels.

5. Solar protection device according to any one of the preceding claims, the solar protection panel (2) comprising one or more photovoltaic cells.

6. A solar protection device according to any one of the preceding claims, the movement system (5) of the solar protection panel (2) comprising at least one rail (6) configured to permit movement of the solar protection panel (2) in a first horizontal direction.

7. A sun protection device according to any one of the preceding claims, the displacement system (5) of the solar protection panel comprising a trolley (7) installed on the rail (6) and movable in translation on it.

8. Solar protection device according to the preceding claim, the movement system (5) of the solar protection panel (2) comprising at least two electric motors (9).

9. Solar protection device according to the preceding claim, the motors (9) being integrated into the solar protection panel (2).

10. Sun protection device according to claim 8, the motor(s) (9) being integrated into the rail (6).

11. Sun protection device according to any one of claims 7 to 10, the movement system (5) of the sun protection panel (2) comprising a return element (15) of the trolley.

12. A solar protection device according to any one of claims 6 to 10, the movement system (5) of the solar protection panel (2) comprising a conveyor belt (18) mounted horizontally on a motor (9) and a pulley (8).

13. A sun protection device according to any one of claims 6 to 10, the movement system (5) of the sun protection panel (2) comprising a central motor (9) driving a belt (19) mounted on two pulleys (8) capable of moving in the rail (6).

14. A solar protection device according to any one of the preceding claims, the solar protection device (1) being configured to be disposed inside the building, for example in a room.

15. Sun protection device (1) according to any one of the preceding claims, being configured to allow the user to define the desired position of the projected shade.

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