EP3301237A1 - Cladding element and illumination system - Google Patents

Abstract

A cladding element (6) for at least partially covering a ceiling (41) or a wall (42) of a room (4) comprises a planar carrier substrate (62) having a front side and a rear side. The cladding element (6) further comprises a fastening structure (63) arranged on the rear side of the carrier substrate (62), which is designed for fastening the cladding element (6) on a wall (42) or a ceiling (41), and one on the front side the carrier substrate (62) arranged light-shaping structure (61). The light-shaping structure is designed to reflect a light beam (22) directed onto the cladding element (6) and to generate predefined light properties in the reflected light.

Description

Technical area

The invention relates to a cladding element for at least partially covering a wall or a ceiling and an illumination system for illuminating a room with at least one workstation and preferably several workstations.

State of the art

To illuminate rooms and workplaces today lamps are used in different adapted to the particular application embodiments. In this case, the aim is mostly to produce with the lights light distribution curves that allow the best possible illumination for a particular situation.

Among other things, standing or floor lamps are often used in offices for illuminating workstations such as desks. Although such luminaires can in part provide good illumination of individual workstations, they can impair the use of the room and are often perceived as disturbing. In particular, such lights must be set up for optimum illumination of a workplace typically close to this, which is often undesirable and impractical, especially in regularly changing jobs.

Alternatively or additionally, ceiling lights are also used, from which the workplaces are illuminated. For example, it is known to provide surface luminaires suspended on a room ceiling or built into a room ceiling, which specifically illuminate one or more workplaces. Such Area lights can be comparatively small and focused or designed to be larger and wider.

Although workplaces can be preferably illuminated by means of such ceiling lights and although such lights are relatively less disturbing, since they are not placed in places where things are placed or persons are, they are relatively inflexible. Particularly in the case of regularly changing workplaces, for example in offices in which, for example, workstation groups are formed depending on the project, such ceiling lights are usually too inflexible since they have to be relocated, reoriented and configured. Also for the interior design such ceiling lights are often undesirable because they are typically fixed and therefore can not be redesigned.

The object of the invention below is therefore to propose a system which enables a flexibly adaptable and configurable, specific illumination of workplaces in a room.

Presentation of the invention

The object is achieved according to the invention by a cladding element, as defined in independent claim 1, and solved by a lighting system, as defined in independent claim 15. Advantageous embodiments of the invention will become apparent from the dependent claims.

The essence of the invention consists in the following: A cladding element for at least partially covering a ceiling or a wall of a room comprises a planar carrier substrate having a front side and a rear side, a fastening structure arranged on the rear side of the carrier substrate and a light shaping structure arranged on the front side of the carrier substrate. The attachment structure is designed for fastening the cladding element to a wall or a ceiling. The light-shaping structure is designed to reflect a light beam directed onto the cladding element and to generate predefined light properties in the reflected light.

The term "ceiling" or ceiling can refer in the context of the invention to an upper boundary of an open or closed space. Not mandatory but typically Ceilings aligned horizontally. Analogously, the term "wall" in the same context may refer to a lateral boundary of the open or closed space. Walls are typically vertical or substantially vertically aligned. The ceiling and the wall may be formed by plastered masonry, panels, stretched textile materials, metals, concrete, glass, stone materials or the like.

The term "for covering" in connection with the cladding element can be understood to be arranged on the ceiling or wall, so that the ceiling or wall at the location where the cladding element is positioned is not or at least not completely visible from the room. In this case, the cladding element may lie directly against the ceiling or wall or it may be spaced therefrom.

The term "predefined light properties" or "predefined luminous properties" in connection with the reflected light may refer to the properties of a luminous flux directed onto the cladding element and the nature of the light-form structure which define the luminous properties specifically for illuminating a room or a workstation , In particular, the light properties of the reflected light can be predefined in such a way that a light distribution curve (LVK) specifically provided for the workstation or space involved is achieved. In this way, a workstation can advantageously be specifically illuminated and / or an adapted advantageous basic lighting can be generated in the room. It can also be achieved with the predefined light properties that different light atmospheres such as, for example, diffused and / or directed are created. Not to be understood as predefined in this sense are luminous properties which are present without being adapted or included in determining the illumination of the room or the workplace.

In this context, the term "light distribution curve" is understood to mean a characterization of the light emitted by a luminaire, which can be represented in a graph. The light intensities are connected in their different directions of radiation with each other to form a curve. The light distribution describes the spatial distribution of the light. Shape and symmetry of Light distribution characterize a depth or width and a symmetry of the radiation.

The term "workplace" in this context may refer to a typically horizontal or quasi-horizontal surface on which certain activities occur. For example, the workstation may be a table surface, and in particular a surface of an office or desk. Or it can be an area of a room with or without one or more tables. Also, it can only be part of a table such as a conference table in a boardroom.

The term "targeted illumination" in the context of the workplace may refer to the generation of a preferred light distribution curve (LVK). In particular, the workplace should be sufficiently brightened and glare should be avoided. The targeted illumination does not create a lighting of the workplace via a basic lighting in the room, but a specific illumination of the workplace, which is independent of the basic lighting. Typically, the illumination of the workplace differs from the basic lighting of the room. For example, the workplace should often be illuminated brighter to allow comfortable reading and writing or working. Depending on the configuration, such as, for example, the type, angle, homogeneity of a surface illuminated by a light source or the nature of the cladding element, pure workplace lighting or a combination of workstation and basic lighting can be achieved.

The term "light beam" or luminous flux or beam can refer to a stream of visible light. This may be light emitted by a luminaire or light source and in particular visible light emitted by a light emitter. The light beam or beam may be a beam, wherein ray bundles are understood to mean a number of light rays which run exactly or approximately parallel to one another or also predominantly in a similar direction. In this case, the light beam can also have a propagation angle, as typically occurs in point light sources.

With the cladding element, the light can be controlled locally, for example, to a wall or a workplace. Or there may be intermediate values (dynamic light distribution curve) are generated. Alternatively or additionally, lighting moods can also be controlled, for example by the percentage setting of the directed and / or diffuse light component.

Advantageously, the cladding element is designed to reflect at least 60% or at least 75% of the light beam directed onto the cladding element. In particular, this can be ensured in all embodiments of the cladding element.

Among other things, the cladding element according to the invention makes it possible to create a luminaire object which can selectively emit light. Thus, a dematerialized light or a virtual light on the ceiling or the wall can be generated. The creation of such a virtual light allows great flexibility in the lighting and design of workstations. For example, in rooms in which the workstations change regularly, a purposeful lighting can be done, which can be adapted to the changes with relatively little effort, for example, a simple repositioning of the trim element. For example, this can prevent the ceiling lights from being suspended and / or standing or floor lamps having to be changed over in order to enable adapted lighting of the room or of the individual workplaces in the event of changing conditions.

In addition, the inventive cladding element allows new possibilities in interior design. The virtual light can be perceived as a built-in light, without actually installation would be necessary. The cladding element further allows workspaces to be suitably illuminated in rooms in which no installation or installation of light in or on the ceiling is possible. For example, with the cladding element ceiling lights can be generated on ceilings, which are not enough powerful for installation, which are too unsustainable for installation or cultivation or may not be changed, for example, denkmalpflegerischen reasons. Also, no electrical connection to the ceiling is needed. As a result, the ceiling can be completely de-energized, which is often advantageous and can prevent a relatively expensive ceiling construction. In addition, the lighting system may be advantageous even at relatively low ceiling heights, since no superstructures protrude from the ceiling. Next can be used efficiently with the cladding element ceilings for lighting, which have a relatively low reflectance and thus would have a relatively large energy consumption, if they were used for lighting via reflection.

In comparison to known lighting systems with floor lamps, the cladding element according to the invention can have the following advantages: The luminaires or light radiators used can be made relatively flexible, since no large luminaire head is necessary. For example, bulky lamp heads are often used for good lighting, which are relatively expensive and require a lot of material. The indirect lighting over the ceiling or the wall, as is possible with the inventive cladding element, can be perceived as particularly pleasant. In addition, light graphics can be generated. The inventive cladding element may be preferred in the interior design, since no stand or larger luminaire objects must be placed in the room. A shadowing by direct light can be prevented. The light produced can come close to the impression of daylight, which is often perceived as pleasant. The maintenance and installation can be relatively simple.

In addition to the attachment of the cladding element exclusively on a ceiling or on a wall, it may also be attached to a ceiling or one or more walls of the room at the same time. Thus, a luminaire object can be generated over the corner, which may be preferred in certain applications. For example, can be illuminated by the variability of the solid angle of a radiator more wall and thus a higher vertical luminance can be achieved, which may be helpful, for example, to improve the face recognition. At the same time, a further freedom of design (degree of freedom) for the interior design can arise.

The cladding element according to the invention thus makes it possible to create a system with which a flexibly adaptable illumination, for example, of workplaces in a room or the entire room can be achieved. Also, it can be implemented relatively efficiently and inexpensively.

The attachment structure may be formed in any manner adapted to the cladding element and the associated ceiling or wall. For example, it may comprise openings for passing or receiving screws, nails or the like, or it may be equipped with hooks, clamps or similar fastening means. Or it may comprise a Velcro strip or a part of a hook-and-loop fastener which is mounted on the ceiling or wall for cooperation with a corresponding part of the hook-and-loop fastener. Or it can be designed for electrostatic adhesion. Preferably, the attachment structure comprises an adhesive. In this case, the adhesive may be configured as an adhesive layer on the carrier substrate or as a double-sided adhesive tape. With such an adhesive, the cladding element can be efficiently and safely attached directly to the ceiling or wall. Alternatively, the cladding element can also be suspended directly or at a distance from the ceiling. For this purpose, the attachment structure may include suspension elements such as cables, chains, straps, rods or the like or be adapted to be mounted on such suspension elements.

Alternatively or additionally, the attachment structure preferably comprises magnets. Such magnets can be applied flat or partially or piecewise. With such magnets, the cladding element can be easily and efficiently attached to the wall or the ceiling. For example, ceilings with metallic panels are widely used. At which such a cladding element could be easily and releasably secured.

The carrier substrate may have any suitable basic shape, such as a rectangular or circular area. Also, it may be shaped as a graphic form such as a heart or a body. The term "carrier substrate" may refer to any typically planar structure that provides support to the attachment structure and the light shaping structure. For example, the carrier substrate may be a textile such as a cloth. In a preferred embodiment, the carrier substrate is a film. Such a film can be produced efficiently, made robust and flexibly shaped. In an alternative preferred embodiment, the carrier substrate is a plate. The plate may be rigid or solid or elastic or bendable. Such a plate enables a robust implementation of the cladding element. For example, such a plate itself be designed as panels.

The reflected light may be diffuse or substantially diffuse. The light-shaping structure preferably comprises reflection, refraction and / or diffraction contours which direct the reflected light. The reflection contours allow the reflected light to be directed, whereby the radiation characteristics of the reflected light can be adjusted or determined. In particular, they can be designed as a microstructure or nanostructure. The light-shaping structure may also be provided with a light-directing paint, anodized, with a galvanic coating or the like. In this case, the light thus reflected may be partially directed or partially diffused or substantially completely directed. Such light is preferred in many applications.

The reflection, refraction and / or diffraction contours of the light-shaping structure preferably comprise cones, cones, prisms, line structures and / or pyramids. In this way, these light-guiding contours can allow a directed, diffuse or partially diffuse reflection of the light. Or they can have a refractive effect by shaping already reflected light, for example via lenses. For example, the reflection contours may be arranged adjacent to a reflective layer such as a mirror layer. They can also be diffractive. A combination of these modes of action may also be possible. Thus, by means of the light-guiding contours, the reflected light can be directed efficiently and a preferred light distribution curve can be generated.

In a preferred embodiment, the light shaping structure comprises a first reflection layer and a second reflection layer, wherein the first reflection layer is closer to the front side of the support substrate than the second reflection layer, the first reflection layer and the second reflection layer have different reflection properties, and the second reflection layer is partially transparent.

The two reflection layers can be created or created in different ways. For example, they can be configured integrally, that is, for example, a reflective base layer is sprayed with a white or other-colored paint (overspray). Here, the reflected light is depending on Density of the paint tends to be more diffuse or more directional. The two reflective layers may also be integral in that they lie in one plane, for example as pressure on a substrate such as a foil or a glass (print). The print may include a pattern with different properties. It may be important how the pattern is formed and in what sizes the pattern is printed. For example, on the one hand, large-area patterning can enable a precise adaptation of the light properties. On the other hand, a small-area pattern may be desirable to prevent a patterned light at the destination and for aesthetic reasons to produce a surface as bright as possible. The pattern is preferably adapted to the purpose of use, taking into account these prerequisites. Or the two reflection layers can be designed to be additive, that is, the two reflection layers are each formed as a covering layer, wherein the second reflection layer is translucent in places. For example, the second reflective layer may have a pattern with translucent and opaque regions, such as a checkerboard pattern.

In particular, the second reflection layer is preferably partially translucent in that it is perforated. The perforations can be formed in any way. For example, may be round, square or formed with other geometric shapes. The perforated second reflection layer may be, for example, checkered. Such a perforated second reflection layer allows great freedom in the design of the reflection properties of the cladding element as well as in their optical design. For example, any images can be applied to the carrier substrate. Among other things, a two-tone version with reflective and white is possible. About the density of the coating can then the radiation characteristics or atmosphere can be adjusted.

Preferably, the cladding element comprises an adjusting device, wherein the light-shaping structure is variable by means of the adjusting device so that it adjusts the predefined light properties of the reflected light. By changing the light shape structure, the predefined light properties of the reflected light can also be changed. As a result, the light properties or the LVK can be adjusted with the adjusting device. That's how it works To adapt cladding element efficiently to the specific current situation in the application of the cladding element.

In this case, preferably the light-form structure pigments and the adjusting device comprise at least one electrode, wherein the at least one electrode is adapted to arrange the pigments. Preferably, a background is silver and the pigments are white. The pigments may in particular be liquid pigments. Such pigments can be attracted or repelled by electricity and ordered. The term "arrange" may refer in this context to a shifting and / or alignment or straightening of the pigments. With targeted straightening and arranging of the pigments, the light properties of the reflected light can be adjusted and adjusted precisely and efficiently. For example, white pigments may be disposed in front of a reflective surface, for example, of the carrier substrate, which may be ordered by means of the electrode.

The pigments are preferably provided as mobile particles in a film. Such a film can be produced efficiently, precisely and inexpensively.

The adjusting device preferably comprises a controller which regulates the supply of the at least one electrode. Such control allows precise metering and feeding of current to the electrodes so that the pigments can be efficiently and accurately directed and positioned.

Preferably, the cladding element comprises a photovoltaic element for feeding the adjusting device and preferably other electrical consumers. The photovoltaic element may be a photovoltaic film. Such a film could be provided as a layer of the trim element. Also photovoltaic cells in foil form can be realized in color today. Thus, such a photovoltaic film could simultaneously be designed for energy production and for reflection as the first or second reflection layer or another part of the light-shaping structure.

In a further preferred embodiment, the light-shaping structure comprises a clear liquid in which electrically charged darker particles or microparticles and oppositely electrically charged light particles or Microparticles are arranged. The light-shaping structure may further comprise a voltage generator with which electrical voltages can be generated in the liquid of the light-shaping structure. In this way, by analogy with the mode of action of eBooks, the particles or microparticles can be systematically arranged by a single application of an electrical voltage. This allows the light properties to be set efficiently and extremely versatile. In addition, no energy is needed to maintain the systematic placement of the particles.

The light-shaping structure preferably has inhomogeneous reflection properties. With such a light shape structure, a mixture of different preferred reflection properties can be efficiently achieved. In this case, the light-shaping structure may in particular have inhomogeneous reflection properties, in that it comprises a plurality of regions which are designed to reflect a light beam directed onto the cladding element differently from one another. With such areas, inhomogeneous reflection properties can be easily and effectively generated. In particular, the regions can be distributed over a wide area or over the virtually entire front side of the carrier substrate or can expand thereon.

In this case, the multiple regions of the light-shaping structure preferably comprise a diffuse region which is designed to reflect a diffuse light beam directed toward the cladding element in a diffuse manner or diffusely. The diffused area preferably constitutes at least about 50% or at least about 60% or preferably about 70% of the area with which the light beam directed onto the cladding element is reflectable. Such a diffuse region, in particular in combination with a directionally reflecting region, makes it possible to generate advantageously mixed reflection properties.

Preferably, the multiple regions of the light shaping structure alternate with each other in a recurring manner. This allows a simple mixing of the reflection properties, so that they are not or only partially perceived by a viewer separately. Thus, a preferred lighting or atmosphere can be created. In this case, at least one of the several regions of the light-shaping structure is preferably designed dotted. The term "dotted" encompasses any point, spot, dab or speckled or similar arrangements. With such an embodiment of the multiple areas can be efficient the different reflection properties are mixed relatively fine.

Preferably, at least one of the plurality of regions of the light shaping structure is made by spraying with a dye. In this context, the term "dye" can be understood to mean a coloring substance with which a substrate can be dyed or dyed. They can be designed, for example, as spray paint to adhere to the substrate and thereby to dye it at least from the outside or from a visible side. By means of such spraying, the multiple areas can be created efficiently and comparatively finely tuned.

In a preferred embodiment, the multiple regions are constructed of different materials so that different reflective regions have different materials. In this way, a total reflection can be precisely defined.

Preferably, the cladding element is designed to absorb sound. The term "sound-absorbing" refers to a recording or swallowing of sound waves in the audible range. For example, according to the German industrial standard DIN EN ISO 354: 2003, as an example, the cladding element can be perforated for sound absorption or equipped with perforated areas. In this case, the cladding element in a frequency range of about 100 Hz to about 4,000 Hz has a sound absorption coefficient of at least about 0.3. With such a cladding element, the same element or component can be used on the one hand to illuminate a workplace and on the other hand to protect the workplace from noise or unwanted sound. In other applications, such a cladding element for lighting and simultaneous noise reduction can be used. As a result, the cladding element can be designed as a multifunctional component, which can be advantageous in many applications. For example, a reverberation time of on average less than 0.6 seconds can be achieved with such a cladding element.

The cladding element preferably has a layer of sound-absorbing material. Such materials may be, for example, felts, foams, punched wood, apertured films, textiles, or the like. In this way, the cladding element can be efficiently designed as a soundproofing component. In this case, the layer of sound-absorbing material is preferably arranged on the front side of the carrier material. The front is typically oriented towards the room or the workplace. The mentioned layer can thus efficiently absorb sound at the destination or protect it from noise. In this case, the layer of sound-absorbing material is preferably translucent. In this way, light can penetrate this layer and be reflected by a structure arranged behind it.

Another aspect of the invention relates to a lighting system having a light emitter, a workstation and a trim element in an embodiment described above. In the lighting system, the trim element is secured to a wall or ceiling of a room, the light emitter configured to radiate a stream of visible light to the trim element, and the trim element such that the stream of visible light radiated from the light emitter to the trim element creates a luminaire object with predefined luminous properties. The luminaire object specifically illuminates the workplace.

The "light emitter" as provided in the illumination system typically comprises at least one light source, in particular an LED light source and an optic with which the light emitted by the light source is adjusted or adjusted. In particular, the light source together with the optics generates the stream of visible light.

The term "luminaire object", as used in connection with the illumination system, refers to a homogeneous or inhomogeneous closed light surface with a defined boundary or sharp edges. The luminaire object may have any shape on the cladding element. In particular, it may be round or polygonal. The luminaire object can be designed or adjusted so that the light surface does not have a homogeneous luminance distribution. This can for example be higher in the center. The human eye does not necessarily have to perceive this but it can be noticeable in the workplace. This allows you to adjust the illuminance between the wall and the table. The two extremes can be called "center beam" and "ring beam".

The term "defined limit" in this context means a decrease in the luminance on the cladding element to a maximum of 10%, not more than 5% or almost 0%, exceeding a maximum of about 30% of a diameter or about a maximum of about 15% of a radius of the luminaire object or a center zone thereof. In this case, the center zone may be an area of the luminaire object which is not to be assigned to the defined boundary, ie to a border zone. The center zone may be a homogeneous light surface or may, for example, have a luminance gradient away from the center toward the edge zone. The diameter may be an approximate diameter for non-circular shapes of the luminaire object. For example, it may correspond to a square shape of a diagonal of the square.

The term "sharp edge" in this context is understood to mean a decrease in luminance of at least about 20%, at least about 25%, at least about 30%, at least about 40% or at least about 50%, preferably to about 0% a maximum of about 10% of the diameter of the luminaire object or a center zone thereof takes place.

About such a luminaire object, the characteristics of the reflected light from the ceiling can be set relatively accurately. The luminaire object can be a spot or any other form of luminaire. In particular, with such a lighting system, the effects and advantages described above in connection with the cladding element can be efficiently realized in the context of a workstation.

Preferably, in the lighting system, the light emitter is stationarily connected to the workstation. It can for example be integrated in a table leg of a desk or attached to the edge of a table top of the office table. In this embodiment of the illumination system, the light emitter can be moved with the workstation or office table or mitwandern. This allows a very flexible and easy lighting of workplaces.

The light emitter preferably has an actuating unit with which the properties of the current of visible light can be set. With the setting unit, for example, the light color and / or the intensity can be adjusted. This allows the generation of a customized and well-defined luminaire object on the cladding element.

In this case, the setting unit of the light emitter is preferably designed to change a direction of the current of visible light. In addition, it is preferably designed to change a focus of the luminous flux. For this purpose, the light emitter may be equipped with a telescope, for example. In this way, the luminaire object can be flexibly generated on the cladding element and adapted to changing workplaces. In particular, the setting unit can allow a change in the focus and the emission angle. With the focus, the edge sharpness of the luminaire object and with the angle the size of the luminaire object can be adjusted.

Preferably, the lighting system comprises a monitoring unit connected to the actuator of the light emitter, wherein the monitoring unit is configured to monitor the workstation and to activate the control unit when the workstation changes, the control unit setting the flow of visible light in such a way that that the illumination of the workplace by the luminous object of the cladding element remains constant. The change in the workplace can be, for example, a move of the workplace or the desk. Also, a change in the height of the desk may be a change in the workstation that is monitored and detected by the monitoring unit. In such an illumination system, the light emitter can be fixedly arranged in space. When changing the workplace, the luminaire object on the cladding element can be changed automatically so that the illumination of the workplace remains constant. The lighting system can thus automatically adjust the lighting situation, the virtual ceiling light, for example, mitwandern with the workplace and thus ensure a constant illumination.

Preferably, the monitoring unit comprises a sensor which detects the position and / or the orientation of the workstation. The sensor can in particular be aligned with the detection of movements of the workstation. this makes possible an automated and quick detection and recording of a change in the workplace.

Preferably, the stream of visible light to be radiated from the light emitter to the cladding element is a directed or partially diffused stream of visible light. With such a stream, the luminaire object on the cladding element can be produced particularly accurately and efficiently.

The present disclosure further includes the following embodiments:

• ein flächiges Trägersubstrat mit einer Vorderseite und einer Rückseite,
• eine an der Rückseite des Trägersubstrats angeordnete Befestigungsstruktur, die zur Befestigung des Verkleidungselements an einer Wand beziehungsweise einer Decke ausgebildet ist, und
• eine an der Vorderseite des Trägersubstrats angeordnete Lichtformstruktur, die dazu ausgebildet ist, einen auf das Verkleidungselement gerichteten Lichtstrahl zu reflektieren und im reflektierten Licht vordefinierte Lichteigenschaften zu erzeugen.

Embodiment 1 is a cladding element for at least partially covering a ceiling or a wall of a room, comprising:

• a flat carrier substrate with a front side and a rear side,
• a fastening structure arranged on the rear side of the carrier substrate and designed for fastening the lining element to a wall or a ceiling, and
• a light-forming structure arranged on the front side of the carrier substrate, which is designed to reflect a light beam directed onto the cladding element and to generate predefined light properties in the reflected light.

Embodiment 2 is the cladding element of Embodiment 1, in which the attachment structure comprises an adhesive.

Embodiment 3 is the cladding element of Embodiment 1 or 2, in which the attachment structure comprises magnets.

Embodiment 4 is the cladding element of any one of the preceding embodiments in which the carrier substrate is a foil.

Embodiment 5 is the cladding element of any one of the preceding embodiments in which the carrier substrate is a plate.

Embodiment 6 is the cladding element of one of the preceding embodiments, in which the light-shaping structure has reflection contours that direct the reflected light.

Embodiment 7 is the cladding element of Embodiment 6, in which the reflection contours of the light-shaping structure comprise cones, cones, prisms and / or pyramids.

• die erste Reflexionsschicht näher bei der Vorderseite des Trägersubstrats liegt als die zweite Reflexionsschicht,
• die erste Reflexionsschicht und die zweite Reflexionsschicht unterschiedliche Reflexionseigenschaften aufweisen, und
• die zweite Reflexionsschicht teilweise lichtdurchlässig ist.

Embodiment 8 is the cladding element of any one of the preceding embodiments, wherein the light-shaping structure comprises a first reflective layer and a second reflective layer, wherein

• the first reflection layer is closer to the front side of the carrier substrate than the second reflection layer,
• the first reflection layer and the second reflection layer have different reflection properties, and
• the second reflection layer is partially translucent.

Embodiment 9 is the cladding member of Embodiment 8, in which the second reflection layer is partially transparent by being formed perforated.

Embodiment 10 is the cladding element of one of the preceding embodiments, which comprises an adjusting device, wherein the light-shaping structure is variable by means of the adjusting device so that it adjusts the predefined light properties of the reflected light.

Embodiment 11 is the cladding element of Embodiment 10, in which the light-shaping structure comprises pigments and the adjusting device comprises at least one electrode, wherein the at least one electrode is configured to arrange the pigments.

Embodiment 12 is the cladding element of Embodiment 11, in which the pigments are provided as a printed structure in a film.

Embodiment 13 is the cladding element of embodiment 11 or 12, in which the adjusting device comprises a controller which controls the feeding of the at least one electrode.

Exemplary embodiment 14 is the cladding element of one of the embodiments 10 to 13, which comprises a photovoltaic element for feeding the adjusting device.

Embodiment 15 is the cladding element of any one of Embodiments 10 to 14, in which a background is silver and the pigments are white.

Embodiment 16 is the cladding element of any one of the preceding embodiments, in which the light-shaping structure has inhomogeneous reflection characteristics.

Embodiment 17 is the cladding member of Embodiment 16, in which the light-shaping structure has inhomogeneous reflection properties by comprising a plurality of portions adapted to reflect differently a light beam directed to the cladding member from each other.

Embodiment 18 is the cladding element of Embodiment 17 in which the plural areas of the light shaping structure include a diffused area configured to partially diffuse or diffuse a light beam directed to the cladding element.

Embodiment 19 is the cladding element of Embodiment 18 in which the diffused area is at least about 50% or at least about 60% or preferably about 70% of the area at which the light beam directed at the cladding element is reflectable.

Embodiment 20 is the cladding member of any one of Embodiments 17 to 19, in which the plural areas of the light-shaping structure alternately alternate with each other.

Embodiment 21 is the cladding element of Embodiment 20 in which at least one of the plural areas of the light shaping structure is dotted.

Embodiment 22 is the cladding member of any one of Embodiments 17 to 21, in which at least one of the plural areas of the light-shaping structure is made by spraying with a dye.

Embodiment 23 is the cladding element of any one of Embodiments 17 to 22, in which the plurality of regions are different Materials are constructed so that different reflective areas have different materials.

Embodiment 24 is the cladding element of one of the preceding embodiments, which is sound-absorbing.

Embodiment 25 is the cladding element of Embodiment 24 having a sound absorption coefficient of at least about 0.3 in a frequency range of about 100 Hz to about 4,000 Hz.

Embodiment 26 is the cladding element of any of the foregoing embodiments 24 or 25 having a layer of sound absorbing material.

Embodiment 27 is the cladding element of Embodiment 26 in which the layer of sound absorbing material is disposed on the front side of the substrate.

Embodiment 28 is the cladding element of Embodiment 27 in which the layer of sound absorbing material is transparent.

• das Verkleidungselement an einer Wand oder einer Decke eines Raumes befestigt ist,
• der Lichtstrahler dazu ausgestaltet ist, einen Strom von sichtbarem Licht an das Verkleidungselement zu strahlen,
• das Verkleidungselement so beschaffen ist, dass der vom Lichtstrahler an das Verkleidungselement gestrahlte Strom von sichtbarem Licht ein Leuchtenobjekt mit vordefinierten Leuchteigenschaften erzeugt, und
• das Leuchtenobjekt gezielt den Arbeitsplatz ausleuchtet.

Embodiment 29 is an illumination system with a light emitter, a workstation and a cladding element according to one of the preceding embodiments, in which

• the cladding element is attached to a wall or ceiling of a room,
• the light emitter is configured to emit a stream of visible light to the cladding element,
• the cladding element is such that the stream of visible light emitted by the light emitter to the cladding element produces a luminaire object with predefined luminous properties, and
• the luminaire object specifically illuminates the workplace.

Brief description of the drawings

Fig. 1

eine perspektivische Skizze eines ersten Ausführungsbeispiels eines erfindungsgemässen Beleuchtungssystems mit einem ersten Ausführungsbeispiel eines erfindungsgemässen Verkleidungselements;

Fig. 2

eine Querschnittsansicht des Verkleidungselements von Fig. 1;

Fig. 3

eine Querschnittsansicht eines zweiten Ausführungsbeispiels eines erfindungsgemässen Verkleidungselements;

Fig. 4

eine perspektivische Ansicht eines dritten Ausführungsbeispiels eines erfindungsgemässen Verkleidungselements;

Fig. 5

eine perspektivische Ansicht eines vierten Ausführungsbeispiels eines erfindungsgemässen Verkleidungselements; und

Fig. 6

eine Aufsicht eines Ausschnitts eines fünften Ausführungsbeispiels eines erfindungsgemässen Verkleidungselements.

Further advantageous embodiments of the invention will become apparent from the following description of embodiments of the invention with the aid of the schematic drawing. In particular, in the following, the Inventive cladding element and the illumination system according to the invention with reference to the accompanying drawings with reference to embodiments described in more detail. Show it:

Fig. 1

a perspective sketch of a first embodiment of an inventive illumination system with a first embodiment of an inventive cladding element;

Fig. 2

a cross-sectional view of the cladding element of Fig. 1 ;

Fig. 3

a cross-sectional view of a second embodiment of a cladding element according to the invention;

Fig. 4

a perspective view of a third embodiment of a cladding element according to the invention;

Fig. 5

a perspective view of a fourth embodiment of a cladding element according to the invention; and

Fig. 6

a plan view of a section of a fifth embodiment of an inventive cladding element.

Weq (e) for carrying out the invention

Certain terms are used in the following description for convenience and are not meant to be limiting. The words "right," "left," "bottom," and "top" refer to directions in the drawing to which reference is made. The terms "in", "out", "below", "above", "left", "right" or the like will be used to describe the arrangement of designated parts to each other, the movement of designated parts to each other and the directions toward or away from geometric center of the invention and named parts thereof as shown in the figures used. These relative relative terms also include other positions and orientations than those shown in the figures. For example, when a part shown in the figures is turned over, elements or features described as "below" are then "above". The terminology includes the words expressly mentioned above, derivatives thereof, and words of similar meaning.

The omission of an aspect in the description or a figure does not suggest that this aspect is lacking in the associated embodiment. Rather, such omission of clarity and prevention of Serve repetitions. Like reference numerals in two or more figures indicate similar or like elements.

Fig. 1 shows a first embodiment of an inventive lighting system 1 with a first embodiment of an inventive cladding element 6. In this case, the lighting system 1 in an office room 4 with a ceiling 41, walls 42 and a bottom 43 is set up. On the floor 43 of the office space 4, a desk 3 with four legs 32 and a table top 31 is arranged. An upper side of the table top 31 forms a workstation 311.

The lighting system 1 comprises the work station 311, the cladding element 6 and a light stele 2 as a light emitter. The Lichtstele 2 is equipped with an LED bulb 21, an optic and an adjusting device. By means of the adjusting device Lichtstele 2 is configured or adjustable. The Lichtstele 2 is placed in front of an edge of the table top 31 on the floor 43.

The cladding element 6 is formed flat and pad-like and has an approximately circular basic shape. It is fixed to the ceiling 41 and comprises a light-shaping structure 61 which is oriented downwards. The cladding element 6 thus covers the ceiling 41 at the point at which it is mounted.

As in Fig. 2 can be seen, the light-shaping structure 61 of the cladding element 6 has a pyramidal microstructure as a reflection contour. Thus, it may be formed as a matt scattering structure, as a reflective structure or as a mixture thereof. The cladding element 6 further comprises a carrier foil 62 as a flat carrier substrate with an upper front side and a lower rear side. At the rear side of the carrier film, an adhesive layer 63 is arranged as a fastening structure, which is designed to fasten the lining element 6 to the ceiling 41. The light-shaping structure 61 is arranged on the front side of the carrier film 62 and designed to reflect a light beam directed onto the lining element 6 and to generate predefined light properties in the reflected light.

In Fig. 1 It can also be seen that the light stele 2 emits a luminous flux 22 via its LED illuminant 21 and its optics, that is to say a current of visible light to which attached to the ceiling 41 cladding element 6 sends. The light-shaping structure 61 is designed with its reflection contour such that the luminous flux 22 generates a spot 5 as a luminaire object with predefined luminous properties or a predefined LVK. The spot 5 has a circular homogeneous center zone 51 and a sharp edge 52 as a conclusion. The light stele 2 is configured such that the spot 5 generated on the cladding element 6 preferably illuminates the workstation 311. In particular, this illuminates or illuminates an area of the upper side of the desk 3 which lies next to a screen arranged on the desk 3.

Fig. 3 shows a second embodiment of a cladding element 60 according to the invention. The cladding element 60 comprises a carrier foil 620 as a flat carrier substrate with an upper front side and a lower rear side. At the back of the carrier film 620, a plurality of magnets 630 is arranged as a fastening structure. The magnets 630 are particularly intended to secure the cladding element 60 to a metal ceiling or wall. Arranged on the front side of the carrier film 620 is a two-part light-form structure which comprises a first reflection layer 640 closer to the front side of the carrier film 620 and a second reflection layer 610 farther from the front side of the carrier film 620.

The first reflection layer 640 is a mirror layer which reflects incident light in a directionally directed manner. The second reflection layer 610 reflects the light diffusely. Thus, the first reflection layer 640 and the second reflection layer 610 have different reflection characteristics. The second reflection layer 610 is perforated. In particular, it includes square holes arranged like a checkerboard, through which light can reach the first reflection layer 640. It is thus partially translucent. By way of the two-part embodiment of the light-shaping structure, the cladding element 60 can reflect light both diffusely and directionally. As a result, a desired for many applications LVK can be generated.

In Fig. 4 a third embodiment of a cladding element 68 according to the invention is shown. It comprises a carrier foil 628 as a flat carrier substrate with an upper front side and a lower rear side. At the back of the carrier foil 628 is an adhesive layer 638 as a fastening structure arranged. On the front side of the carrier foil 628, a light-shaping structure 618 with a continuous planar mirror layer is mounted, which has pigments 6128 arranged in a substrate 6118. The substrate 6118 and the pigments 6128 may be provided as a printed structure in a film. The cladding element 68 further comprises an adjusting device having a positive electrode, that is to say an anode 6138, and a negative electrode, that is to say a cathode 6148. The anode 6138 and the cathode 6148 lie opposite one another at the edge of the substrate 6118.

The trim member 68 further includes a controller connected to the cathode 6148 and the anode 6138. By means of the controller, the two electrodes can be adjusted so that the pigments 6128 are ordered and aligned. As a result, the reflection properties of the light-shaping structure can be changed by means of the adjusting device so that the light properties of the light reflected by the cladding element 68 are adjusted. In another embodiment of the cladding element of Fig. 4 For example, one of the pigments is silver and therefore directionally reflective and the other pigments are white and thus diffusely reflective.

Fig. 5 shows a fourth embodiment of a cladding element 69 according to the invention. It comprises a carrier foil 629 as a flat carrier substrate with an upper front side and a lower rear side. At the rear side of the carrier film 629, an adhesive layer 639 is arranged as a fastening structure. Attached to the front of the support film 629 is a light forming structure comprising a clear liquid containing negatively charged dark microparticles 649 and positively charged bright microparticles 619.

The cladding element 69 or its light-form structure further comprises a voltage generator with which selectively preferred electrical voltages in the liquid of the light-shaping structure can be generated. Thus, by applying an electrical voltage once, the microparticles 619, 649 can be arranged systematically. In this case, no energy is required to maintain the systematic arrangement or the image, the image once produced remains intact.

In Fig. 5 is the microparticles 619, 649 arranged in a checkerboard-like structure. Thus, the reflection properties of the light-shaping structure can be customized and flexibly changed so that the light characteristics of the light reflected by the cladding member 69 can be adjusted.

Fig. 6 shows a fifth embodiment of a cladding element 67 according to the invention. It comprises a carrier foil 627 as a flat carrier substrate with an upper front side and a lower rear side. At the back of the carrier film 627, an adhesive layer is bangeordnet as a mounting structure. The front side of the support film 627 is printed, with a background 6117 of the print having first light-directing properties and a pattern 6127 of printing having second light-directing properties. The pattern 6127 comprises a plurality of regularly arranged points. By sizing the dots of pattern 6127 of the print and arranging the dots on the background 6117 of the print, the light characteristics of the panel 67 may be adapted for intended use.

While the invention has been illustrated and described in detail by the figures and the accompanying description, this description and detailed description are to be considered illustrative and exemplary and not limiting as to the invention. In order not to transpose the invention, in some instances, well-known structures and techniques may not be shown and described in detail. It is understood that those skilled in the art can make changes and modifications without departing from the scope of the following claims. In particular, the present invention covers other embodiments with any combinations of features that may differ from the feature combinations explicitly described. For example, the light-shaping structure may be formed as an electrochromic glass pane. This can be milky, when no power is supplied or transparent when it is energized. Or it can be a glass pane based on another principle, which can switch between white or milky white and transparent. One side of the glass pane is preferably provided flat with a mirror layer.

The present disclosure also includes embodiments having any combination of features that are mentioned or shown above or below various embodiments. It also comprises individual features in the figures, even if they are shown there in connection with other features and / or are not mentioned above or below. Also, the alternatives of embodiments and individual alternatives described in the figures and the description may be excluded from the subject matter of the invention or from the disclosed subject matter. The disclosure includes embodiments which exclusively comprise the features described in the claims and in the exemplary embodiments as well as those which include additional other features.

Furthermore, the term "comprising" and derivatives thereof do not exclude other elements or steps. Likewise, the indefinite article "a" or "a" and derivatives thereof does not exclude a variety. The functions of several features listed in the claims may be fulfilled by a unit or a step. The terms "substantially", "approximately", "approximately" and the like in connection with a property or a value in particular also define precisely the property or exactly the value. The terms "about" and "approximately" in the context of a given numerical value or range may refer to a value or range that is within 20%, within 10%, within 5%, or within 2% of the given value or range. All reference signs in the claims are not to be understood as limiting the scope of the claims.

Claims (15)

Cladding element (6; 60; 67; 68; 69) for at least partially covering a ceiling (41) or a wall (42) of a room (4)
a planar carrier substrate (62; 620; 627; 628; 629) having a front side and a rear side,
a mounting structure (63; 630; 638; 639) disposed on the backside of the support substrate (62; 620; 627; 628; 629) adapted to secure the trim element (6; 60; 67,68; 69) to a wall (42 ) or a ceiling (41) is formed, and
a light-forming structure (61; 610, 640; 6117; 6127; 618; 619; 649) disposed on the front side of the support substrate (62; 620; 627; 628; 629) adapted to project onto the cladding element (6; 67, 68, 69) to reflect the light beam (22) and to produce predefined light properties in the reflected light. A cladding element (6; 60; 67; 68; 69) as claimed in any one of the preceding claims, wherein the light shaping structure (61; 610,640; 6117,6127; 618; 619,649) comprises a first reflective layer (640) and a second reflective layer (6). 610), wherein
the first reflective layer (640) is closer to the front of the carrier substrate (62; 620; 627; 628; 629) than the second reflective layer (610),
the first reflection layer (640) and the second reflection layer (610) have different reflection properties, and
the second reflection layer (610) is partially translucent. The cladding element (6; 60; 67; 68; 69) of claim 2 wherein the second reflective layer (610) is partially translucent in that it is perforated. A cladding element (6; 60; 67; 68; 69) as claimed in any one of the preceding claims including actuator means (6138,6148), the light shaping structure (61; 610,640; 6117,6127; 618; 619,649) being formed by means of Adjusting means (6138, 6148) is variable so that it adjusts the predefined light properties of the reflected light. The cladding element (6; 60; 67; 68; 69) of claim 4, wherein the light shaping structure (61; 610,640; 6117,6127; 618; 619,649) comprises at least one of pigments (6128) and the actuator (6138,6148) an electrode (6138, 6148), wherein the at least one electrode (6138, 6148) is arranged to arrange the pigments (6128). The cladding element (6; 60; 67; 68; 69) of claim 5, wherein the pigments (6128) are provided as a printed structure in a foil. A cladding element (6; 60; 67; 68; 69) according to claim 5 or 6, wherein the adjusting means (6138, 6148) comprises a controller which controls the feeding of the at least one electrode (6138, 6148). A cladding element (6; 60; 67; 68; 69) as claimed in any one of claims 4 to 7, comprising a photovoltaic element for energizing the actuator (6138, 6148). A cladding element (6; 60; 67; 68; 69) as claimed in any one of the preceding claims wherein the light shaping structure has inhomogeneous reflective properties. The cladding element (6; 60; 67; 68; 69) of claim 9, wherein the light shaping structure has inhomogeneous reflection properties by comprising a plurality of regions adapted to reflect differently a light beam directed to the cladding element from each other. The cladding element (6; 60; 67; 68; 69) of claim 10, wherein the plurality of regions of the light shaping structure comprise a diffused region. which is designed to partially reflect a light beam directed towards the cladding element or diffuse diffusely. The cladding element (6; 60; 67; 68; 69) of claim 11, wherein the diffused area is at least about 50% or at least about 60% or preferably about 70% of the area at which the light beam directed to the cladding element is reflectable. Cladding element (6; 60; 67; 68; 69) according to one of the preceding claims, which is sound-absorbing. The cladding element (6; 60; 67; 68; 69) of claim 13 having a sound absorption coefficient of at least about 0.3 in a frequency range of about 100 Hz to about 4,000 Hz. A lighting system comprising a light emitter (2), a work station (311) and a cladding element (6; 60; 67; 68; 69) according to one of the preceding claims, in which
the cladding element (6; 60; 67; 68; 69) is fixed to a wall (42) or a ceiling (41) of a room (4),
the light emitter (2) is adapted to emit a stream of visible light to the cladding element (6; 60; 67; 68; 69),
the cladding element (6; 60; 67; 68; 69) is such that the stream of visible light radiated by the light emitter (2) to the cladding element (6; 60; 67; 68; 69) has a luminous object (5) with predefined light Luminous properties generated, and
the luminaire object (5) selectively illuminates the workstation (311).

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