DE19715517A1 - Light deflection system for illuminating rooms using light reflectors - Google Patents

Abstract

The light deflection system uses light reflecting reflectors which throw light on surfaces inside the room. The light used for the illumination of the room, is distributed in the room esp. scattered, esp. for a regulating system for exposure and prodn. of shadows in rooms. The reflectors (5) are fitted at light entry places (18) of the room (19) in such a manner, that the reflectors, deflect light from outside the room, through the light entry places (18) to the light distributing surfaces (20) in the room (19). The reflectors have curved surfaces, the concave curved surfaces of which serve as reflection surfaces (11). The reflectors (5) of a light entry place (18) are combined to form a light deflecting module.

Description

The invention relates to a light control device for loading brighten or brighten rooms with light reflecting Reflectors according to the preamble of claim 1 and especially the use of the light directing device for a control system for lighting and shading rooms according to DE 197 09 546.1.

They are light control devices for brightening or brightening of rooms with light reflecting reflectors known, wherein at a light entry point, for example at a window, a light control device, such as a blind or a curtain is attached, which are adjusted in this way can allow more or less light to enter the room. This Light control devices, for example from a Venetian blind with a multitude of slats, which rotate, can be lifted and lowered, manually or via a Motor drive individually by the respective user set that the slats the light from outside or on windows the sunlight coming in from outside or less shield. The slats can do so be adjusted so that they are the incident light from outside reflect completely, d. H. darken the room or that they  be pulled up completely so that the whole from the outside available light enters the room.

It is also known to use these blinds, for example are attached to windows by electrically powered Raise or lower motors, especially on windows, that are difficult to access. The corresponding can be found here Light control devices, such as blinds, through remote-controlled motors individually switched on by the user be put. The user is forced, depending on the changing light conditions the light control devices readjust for his room accordingly. It is also known the blinds inside the panes of a double glass Window to attach so that the individual slats of the blind or not to contaminate the blind itself and otherwise against other environmental influences, such as wind or Moisture, are protected. This ensures, among other things dust-proof storage of the blinds.

In addition, it is known to light from in ceilings or Wall lamps installed fluorescent tubes through reflectors to steer such that the people in a room are not ge be dazzled. These reflectors scatter the light in this way into the room that the room is illuminated by diffuse light or is illuminated. Such diffusers can also, for example be attached to glass doors, the light coming from outside scatter, so that on the one hand the light in the room ge is directed, on the other hand, however, direct visual contact People inside the room is avoided.

The known light directing devices become such used it to illuminate the light illuminating the room entry points such as windows or lamps  sprinkle or darken so that the people in the room do not be blinded. Especially in large office buildings, whose Facades consist of large window areas, it is Target of the light control attached to these window surfaces devices to reduce the solar radiation in the rooms, so that they do not heat up too much and so that the People inside the rooms are not dazzled. Here it is common to cover the entire side of a building to control the central control device such that the Blinds for all rooms on the side of this building can be set equally. So is the user of the room or the people who are inside the room, forced the light control device when there are changes in light readjust for the respective room. At break-in twilight or weather improvement or weather forecast deterioration, d. H. when the sun is shining on the window increases or decreases, the user is forced to self or pull up the blinds at the window using a remote control or lower or the inclination of the slats so adjust that more or less light enters the room. Are the individual rooms of the building different? number of windows equipped or it is around buildings with angled or rounded facade surfaces, whose surface is at a different angle to the sun radiation, is an individual regulation of light Irradiation not possible with the known systems.

In addition, the light directing devices are more conventional Systems with insufficient light reflecting material layers. So it is the purpose of conventional light control directions to keep the light away from the room or to destroy it scatter, but not the light specifically in the room to illuminate or brighten the room. The single ones  Slats of the blinds of conventional light control devices are designed so that they can enter the room from the outside reflect incident light back outwards.

The invention has for its object a light control specify device for illuminating or illuminating rooms, the outside light directed into the room so that the room always is optimally illuminated without dazzling the people in the room. The disadvantages of conventional light control should directions are avoided.

The light control device should be simple and cost inexpensive to manufacture and with little effort in existing Systems can be installed. In addition, the light control device the individual light control within a Ensure space and for a control system for exposure and shading of rooms according to DE 197 09 546.1 be.

The invention is characterized in claim 1. Special out management forms and uses of the light according to the invention Steering device are claimed in subclaims.

The light control device for illuminating or illuminating Rooms are out with light reflecting reflectors which light shines on surfaces within the room, which the light for illuminating or illuminating the room in the Distribute space, with the reflectors at light entry points of the room are attached so that the reflectors light from outside the room through the light entry points to the direct light-distributing surfaces in the room.

The reflectors in particular have curved surfaces  on, which are curved so concave that their surfaces of curvature serve as reflective surfaces. Multiple reflectors of one light entry point, for example at a window or a Lamp, can be combined to form a light control module, which can be driven by a motor or manually. To the Turning, lifting and / or lowering the reflectors on and off the same light entry point with a common control means equipped, which the position of the reflectors in relation to the main direction of incidence of the light. This tax means are connected to a common controller, which the reflector positions of different light control modules in different position angles in relation to a common one direction. This direction is for example the main direction of incidence of sunlight or the light direction of an artificial light source, for example one Lamp.

For the regulation of the light entry points on building facades, the opposite to the main direction of incidence of sunlight have different angles of inclination, the controller is in particular especially with external sensors on the building surface and especially special with interior sensors within each room which equips the incident light and the existing room light detect and accordingly, for example, based on a regulation according to DE 197 09 546.1, the reflector positions differed Licher Lichtlenkmodule sets such that each of the detected light incidence angle in each room a defined Light distribution and light intensity sets. Detected the outside sensor the light intensity or the angle of incidence of the outside light, while the inside sensor intensity and the light distribution in the room itself. Of the The indoor sensor or multiple indoor sensors provide the A certain actual light value is available while  the outdoor sensor the controller the existing light intensity and / or the angle of incidence of the incident outside light for ver provides. The controller itself then compares the actual light Value with a defined target light value that is assigned by each load user of each room is individually adjustable, so that the controller the reflectors of different light control modules in sets different position angles so that the light Actual value corresponds to the target light value. It is also there possible, if the outside light is insufficient, the light intensity and Light distribution within a room through an additional one to support artificial room lighting, taking this through Lamps with the light control device according to the invention are equipped, is realizable.

The light control device according to the invention exists from a plurality of reflectors attached to control cables, lifting / Lowering ropes or rotating ropes are attached such that the Raise, lower and rotate reflectors. The reflectors can be arranged horizontally one below the other and such be arched so that the concave side is facing up. This ge ensures a "focal mirror effect" that as much as possible Light incident from the outside is aimed specifically at light distributing Guides surfaces within the room. The individual reflectors can also be arranged vertically next to each other and be arched in such a way that its concave side faces in the direction of the incident light shows, so that the light as with a "Concave mirror" deliberately and deliberately directed into the room becomes. The control ropes or lifting / lowering ropes for each other horizontally arranged reflectors or the rotating cables for the reflectors can be arranged vertically next to each other thereby via certain control means, such as electric motors or for example, pneumatic drives, drive such that they depending on the control signal from the controller, the reflectors in the  turn the desired position so that the actual light value of the room the individually set target light value of the corresponds to the respective user of the room.

The reflectors are advantageously between the Glass panes attached to a double glass window, which as Serves as the light entry point.

In addition, it is possible to use the reflectors within Arrange walls of a container, the container interior forms the room to be illuminated or illuminated. You can for example chemical processes, their reaction speed depends on the incident light, by the control device to be regulated according to DE 197 09 546.1.

Particular embodiments of the invention are based on of the following drawings. Show:

Figure 1 is a sectional view through two rooms with light entry points and light control device.

Fig. 2 is a schematic sectional view of the control system;

Fig. 3 is a sectional view of a light steering device according to the invention;

Fig. 4 is a sectional view (plan view) of the light control device;

Fig. 5 is a sectional view of another embodiment of the light directing device;

Fig. 6 is a sectional view (plan view) of the other imple mentation form of the light control device;

Fig. 7 is a three-dimensional view of a single reflector of the light control device, and

Fig. 8 shows a section through one of the reflectors.

Fig. 1 shows a schematic section through two rooms 19 which are separated from one another by walls 14 . On the outer side of the rooms 19 , ie the outer facade, light entry locations 18 are provided, which are equipped with the light control device 1 according to the invention. This consists of reflectors 5 , which are attached to the light entry locations 18 . The reflectors 5 at the light entry locations 18 have different positions, so that the light which falls on the reflectors 5 from a certain direction is directed into the space 19 .

The main direction of incidence of the incident light from the outside has a certain angle α with respect to a main direction S (for example south), which is identical for all light entry points 18 and reflectors 5 . The different reflectors 5 of the light entry locations 18 have ver different angular positions β ₁ or β ₂ or β ₃ , so that the light incident from the outside is directed through the light entry locations 18 to the light-distributing surfaces 20 in the room 19 . The light-distributing surfaces 20 diffuse the light, in particular diffusely, so that the people inside the room are not dazzled. The reflectors 5 are curved so that their concave surfaces point in the direction of the incident light and serve as reflection surfaces 11 , as is more clearly demonstrated in FIG. 8. As a result, the light is directed into space 19 without losses due to scattering or absorption at the reflectors 5 . The reflectors 5 are coated with a light reflecting layer, which reinforces the light reflection at the light reflectors 5 . The reflectors can be arranged horizontally one below the other or also, in particular for arched or round windows, vertically next to each other and are controlled accordingly.

Fig. 2 shows a schematic sectional view for a control system according to the invention and in particular according to DE 197 09 546 .1.

The figure again shows walls 14 of a room 19 which are equipped with windows as light entry locations 18 . At these light entry locations 18 there are Lichtlenkungsvor devices 1 with the corresponding reflectors 5 according to FIG. 1. Each light entry location 18 has a plurality of reflectors 5 combined to form a light control module 21 , which are controlled by a common control means 4 . All Liche control means 4 , which are advantageously mounted within the double pane of a window, are connected to a controller 15 which receives signals from internal sensors 13 and external sensors 12 . These sensors are connected to the controller 15 via sensor lines 17 , while the control means 4 are connected to the controller 15 via control lines 16 . The controller 15 receives information from the outside sensors 12 on the light intensity and the direction of light from the outside, while the inside sensors 13 pass actual light values on the light intensity and the light distribution within a room to the controller 15 .

The controller 15 controls the control means 4 in such a way that it raises, lowers or rotates the reflectors 5 or the light guide modules 21 , so that the light incident from the outside is directed into the room 19 in such a way that the desired individual light intensity within the room and light distribution is achieved. Several light directing modules 21 can be set differently at the corresponding light entry locations 18 , in particular if the light entry locations 18 of a room 19 have different angular positions with respect to the incident sunlight. This is particularly advantageous on curved or round external facades of buildings, as shown in FIG. 1.

Fig. 3 shows the sectional view through an embodiment form of the light control device l. This light control device 1 is located between the glass panes 2 of a double glass window, the glass panes 2 being connected to one another via glass connections 3 . Control means 4 within the double glass window drive control cables 7 or lifting / lowering cables 8 , which are connected to individual light reflectors 5 , in such a way that the light reflectors 5 can be raised, lowered or rotated. At the lower end of the light control device 1 there is a weight 6 , which ensures that the individual reflectors 5 are reliably raised and lowered via the lifting / lowering cables 8 . The incident light shown in Fig. 3 from the right is reflected on the concave reflectors 5 to the left in the room re.

The reflectors 5 have curved surfaces, the concave surfaces of which serve as reflection surfaces 11 . The concave side of the reflectors 5 points upwards. This ensures a reliable reflection of a maximum of the incident light from the outside with a targeted deflection of the light into the room 19 , while usually convex surfaces point inwards to shield as much light from the interior and throw it back to the outside.

Fig. 4 shows the sectional view of a plan view of the light control device 1 according to the invention according to Fig. 3. The reflectors 5 are in turn between the glass panes 2 of a double glass window, which are connected via glass connections 3 . The reflectors 5 are arranged horizontally one below the other and curved in such a way that the concave side points upwards. Control cables 7 are attached to the Re reflectors 5 so that they can be rotated via the control cables 7 by means of the control means 4 . Lifting / lowering ropes 8 pass through the reflectors 5 and are connected to the weight 6 in order to raise and / or lower the reflectors 5 .

Fig. 5 shows a further embodiment of the light control device 1 according to the invention in a schematic sectional view from the side, wherein the reflectors 5 disposed vertically next to each other and their reflection surfaces 11 are also concavely curved in the direction of the incident light. The reflectors 5 are located between the glass panes 2 of a double glass window. A control means 4 controls the individual reflectors 5 via rotating ropes 9 , so that they can be moved within the window either to the left or to the right or rotated at the respective position. Here, too, it is possible to provide the reflectors 5 with a weight 10 , so that the reliable movement of the reflectors within the glass panes 2 of the double glass window is ensured.

FIG. 6 shows a schematic sectional view from above through the further embodiment according to FIG. 5, a plurality of reflectors 5 also being arranged vertically next to one another here. The reflectors 5 are curved such that the light is always reliably directed into the room and is not lost by scattering or absorption as in conventional light control devices. Depending on the main direction S of the light incident from the outside, the reflectors 5 are concavely curved to the left or to the right, so that the light is reflected on the concave reflecting surface 11 of the reflectors 5 , as shown in FIGS. 7 and 8. Each reflector 5 has a reflection surface 11 which is coated with a light-reflecting material or which itself consists of a light-reflecting material, such as aluminum or silicon oxide, or which is already reflected during manufacture.

FIG. 8 shows a section through a reflector 5 according to FIG. 7, the reflection of the light according to the invention on the concave surface of the curved reflector 5 being shown here.

The controller 15 and the control means 4 are connected to a power supply, all known systems for controlling blinds being usable here. He inventive light control device can also be used for the light control of artificial light, which, for example, comes from lamps. It is not only the light intensity and the light distribution of rooms that can be controlled or regulated in general, but also of containers that are used, for example, for chemical processes.

Claims (19)

1. Light control device for illuminating or illuminating rooms with light-reflecting reflectors, which throw light onto surfaces within the room that distribute the light for illuminating or illuminating the room, in particular scattered, in the room, in particular for a control system for lighting and Shading of rooms according to DE 197 09 546, characterized in that the reflectors ( 5 ) are attached to light entry points ( 18 ) of the room ( 19 ) in such a way that the reflectors ( 5 ) light from outside the room ( 19 ) through the light entry points ( 18 ) to the light-distributing surfaces ( 20 ) in the room ( 19 ). 2. Light control device according to claim 1, characterized in that the reflectors ( 5 ) have curved surfaces, the concave surfaces of which serve as reflection surfaces ( 11 ). 3. Light control device according to claim 1 or 2, characterized in that the reflectors ( 5 ) of a light entry point ( 18 ) are combined to form a light control module ( 21 ). 4. Light control device according to one of the preceding claims, characterized in that the reflectors ( 5 ) of the same light entry point ( 18 ) have a common control means ( 4 ) which adjusts the position of the reflectors ( 5 ) in relation to the main direction of incidence of the light. 5. Light control device according to one of the preceding claims, characterized in that the control means ( 4 ) of the reflectors ( 5 ) attached to the light entry locations ( 18 ) are connected to a common controller ( 15 ) which differentiates the reflector positions of different light control modules ( 21 ) Position angle (β ₁ , β ₂ , β ₃ ) with respect to a common direction (S). 6. Light control device according to claim 5, characterized in that the controller ( 15 ) with external sensors ( 12 ) and internal sensors ( 13 ), which detect the incident light and the existing ambient light, is connected and the reflector positions of different light control modules ( 21 ) in different position angles (β ₁ , β ₂ , β ₃ ) is set such that a defined light distribution and light intensity is set in each room ( 19 ) at a detected light incidence angle (α). 7. Light control device according to claim 6, characterized in that the external sensor ( 12 ) detects the light intensity and / or the angle of incidence (α) of the incident external light and that the internal sensor ( 13 ) detects the light intensity and / or the light distribution in the room ( 19 ) . 8. light control device according to claim 6 or 7, characterized in that the inner sensor (13) to the controller (15) comprises a light actual value provides that the controller (15) compares the light actual value with a defined light-set value, and that the controller ( 15 ) sets the reflectors ( 5 ) of different light directing modules ( 21 ) in different position angles (β ₁ , β ₂ , β ₃ ) in such a way that the actual light value corresponds to the desired light value. 9. Light control device according to one of claims 6-8, characterized in that the controller ( 15 ) additionally controls the artificial room lighting in such a way that when the light intensity of the incident light is insufficient, the actual light value adjusts to the desired light value. 10. Light control device according to one of the preceding claims, characterized in that a plurality of reflectors ( 5 ) on control cables ( 7 ) lifting / lowering cables ( 8 ) or rotating cables ( 9 ) are attached, which rotate the reflectors ( 5 ), or raise and lower. 11. Light control device according to one of the preceding claims, characterized in that the reflectors ( 5 ) are arranged horizontally one below the other and are curved such that the concave side points upwards. 12. Light control device according to one of the preceding claims, characterized in that the reflectors ( 5 ) on control cables ( 7 ) and lifting / lowering cables ( 8 ) are attached, at the end of which a weight ( 6 , 10 ) is attached. 13. Light control device according to one of the preceding claims, characterized in that the reflectors ( 5 ) are arranged vertically next to one another and are concavely curved in the direction of the incident light. 14. Light control device according to one of the preceding claims, characterized in that the reflectors ( 5 ) are attached to rotating cables ( 9 ), a force acting on the ends of the reflectors ( 5 ). 15. Light control device according to one of the preceding claims, characterized in that the control cables ( 7 ), the lifting / lowering cables ( 8 ) or the rotating cables ( 9 ) can be driven via the control means ( 4 ) and the reflectors ( 5 ) rotate. 16. Light control device according to one of the preceding claims, characterized in that the reflectors ( 5 ) between the glass panes ( 2 ) are attached to a window, which serves as a light entry point ( 18 ). 17. Light control device according to one of the preceding claims, characterized in that the control means ( 4 ) is mounted within the window between the glass panes ( 2 ). 18. Light control device according to one of the preceding claims, characterized in that the reflectors ( 5 ) are arranged in the wall ( 14 ) of a container, the container interior of which forms the space to be illuminated or illuminated. 19. Use of the light control device according to one of the preceding claims for a control system for exposure and shading of rooms according to DE 197 09 540.