EP3172483B1 - Assembly for general lighting and method for controlling such an assembly - Google Patents

Assembly for general lighting and method for controlling such an assembly Download PDF

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Publication number
EP3172483B1
EP3172483B1 EP15738630.1A EP15738630A EP3172483B1 EP 3172483 B1 EP3172483 B1 EP 3172483B1 EP 15738630 A EP15738630 A EP 15738630A EP 3172483 B1 EP3172483 B1 EP 3172483B1
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EP
European Patent Office
Prior art keywords
light
generating unit
assembly according
exit surface
generating
Prior art date
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Active
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EP15738630.1A
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German (de)
French (fr)
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EP3172483A1 (en
Inventor
Sandra Beecken
Melanie Hagenbring
Manfred Petschulat
Jens Lohse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zumtobel Lighting GmbH Austria
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Zumtobel Lighting GmbH Austria
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Publication of EP3172483A1 publication Critical patent/EP3172483A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/20—Combination of light sources of different form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F21Y2115/15—Organic light-emitting diodes [OLED]

Definitions

  • the invention relates to an arrangement for general lighting with a first light generating unit for generating a diffused light and a second light generating unit for generating a directed light. Furthermore, the invention relates to a method for controlling such an arrangement.
  • an artificial window which has a light box for producing a diffused light, and a lamp which can be moved by means of a rail arranged at the upper edge of the window.
  • the emission direction of the light emitted by the lamp can also be changed.
  • a luminaire which has a flat light-emitting unit, as well as a radiator, which is pivotally mounted so that the light-emitting direction can be changed.
  • the invention has for its object to provide an improved arrangement for general lighting.
  • the arrangement should be advantageous with respect to the external appearance and advantageous with respect to the lighting properties.
  • a method for controlling such an arrangement is to be specified.
  • an arrangement for general lighting which has a first light-generating unit for generating a diffused light, and a second light-generating unit for Generation of a light directed in an emission direction.
  • the arrangement has means for influencing the second light-generating unit.
  • these means are designed to influence the second light generating unit such that the emission direction changes. Preferably, this change can be time-dependent.
  • the integration of the two light generating units in an arrangement makes the external appearance particularly homogeneous or inconspicuous. In particular, this makes it possible to produce a particularly balanced, quiet spatial impression.
  • the time-dependent change in the emission direction makes it possible for the illumination to change over time. This makes it possible, for example, that shadows formed by illuminated objects or light directions change over time. For example, in this way the lighting situation can be varied in such a way that a changing position of the sun is modeled.
  • the first light-generating unit has a preferably planar and preferably circular light exit surface, via which the diffused light is emitted, and the second light-generating unit has a light-emitting region over which the directed light is emitted;
  • the light-emitting region preferably forms an ambient region of the light-emitting surface.
  • the impression of a skylight can be created. If the light-emitting region forms an ambient region of the light-emitting surface, the directed light can be emanated particularly suitably from different local areas, so that a suitably changing lighting effect results.
  • the second light-generating unit is designed such that the emission direction with a normal of the light exit surface always includes an angle which is greater than 0 °, preferably greater than 10 °.
  • the directional light can be emitted asymmetrically, so to speak.
  • angle is less than 70 °, preferably less than 60 °, can reduce the risk that a user is dazzled by the directed light.
  • the light-emitting region extends annularly around the light-emitting surface; This is advantageous because in this way the directional light - with a total of large light exit surface - can be delivered from significantly different locations.
  • the light exit surface has a diameter of at least 30 cm, in particular at least 50 cm.
  • the second light-generating unit is configured such that a location area within the light output range, from which the directional light leaves the second light-generating unit, is time-changeable. This makes it possible to achieve a changing lighting effect particularly suitable.
  • the second light-generating unit has a plurality of light sources, preferably in the form of LEDs (LED: light-emitting diode), which can be switched on and off successively in time by the means for influencing the second light-generating unit.
  • LED light-emitting diode
  • the location area from which the directional light leaves the light output area, can be changed particularly suitably in time.
  • the lighting means are arranged on a particular closed line, preferably a circular line, in particular equidistantly from each other. This creates the impression that the location area "wanders" over time.
  • the second light generating unit can be influenced by the means such that the local area moves along the line.
  • the second light-generating unit preferably has an optical element, for example in the form of a reflector, which is preferably fixed in position is arranged opposite the first light generating unit.
  • an optical element for example in the form of a reflector, which is preferably fixed in position is arranged opposite the first light generating unit.
  • the first light-generating unit and the second light-generating unit are arranged in a common housing, wherein the housing is preferably intended to be mounted on a ceiling area.
  • the housing is preferably intended to be mounted on a ceiling area.
  • a method for controlling a device according to the invention for general lighting comprises the following steps: (a) activating a first light-generating unit to produce a diffused light, (b) activating a second light-generating unit to generate a light directed in an emission direction, and the following further step (c) influencing the second light-generating unit such that the emission direction changes in a time-dependent manner.
  • the time-dependent change in the direction of radiation makes it possible to change the lighting over time. For example, in this way the lighting situation can be varied in such a way that a changing position of the sun is modeled.
  • the diffused light is emitted constantly in time.
  • suitable natural lighting conditions can be recreated.
  • the second light-generating unit is influenced such that the location area from which the directional light leaves the light-emitting area moves along said closed line, such that the corresponding round-trip time is more than one minute and less than twelve Hours, preferably more than ten minutes and less than six hours.
  • Fig. 1 shows a schematic cross section through an inventive arrangement for light emission.
  • the arrangement may be, for example to act a ceiling light.
  • the arrangement comprises a housing 6, which is designed to be fastened to a ceiling area of a room to be illuminated.
  • a ceiling mounting is also a pendulum or installation situation, or even a wall mounting possible.
  • the arrangement comprises a first light generation unit 1 for producing a diffused light L1, and a second light generation unit 2 for generating a light L2 directed in a radiation direction R.
  • the diffuse light L1 may, for example, be a light with a lambertian radiation characteristic.
  • the first light generating unit 1 for this purpose have a preferably planar light exit surface 3, via which the diffused light L1 is emitted.
  • the light exit surface 3 is advantageously oriented horizontally, the diffused light L1 being emitted downwards.
  • the light exit surface 3 may be circular.
  • the light exit surface 3 is relatively large, for example, it may have a diameter of at least 30 cm or at least 50 cm; with "diameter” is here generally the maximum extent of the light exit surface 3 is designated.
  • the diffuse light L1 makes it possible suitably to emulate a natural, diffused light, as occurs, for example, in the case of a cloudy sky. In particular, no shadows with clear shadow boundaries are generated by such a diffused light.
  • the directional light L2 is preferably formed by a light beam or a cone of light which extends around the emission direction R and has a correspondingly limited opening angle; In particular, the directional light L2 is limited by a smaller solid angle than the diffused light L1. Specifically, the directional light L2 is such that, by interacting with objects it encounters, it produces distinct shadows with clear shadow boundaries.
  • the second light-generating unit 2 has a light-emitting region 4, through which the directional light L2 is emitted, wherein the light-emitting region preferably forms a surrounding region of the light-emitting surface 3.
  • the arrangement has means for influencing the second light-generating unit 2.
  • these means are designed to influence the second light-generating unit 2 in such a way that the emission direction R changes over time.
  • shadows which are formed by the directed light L2
  • a method for driving a corresponding arrangement comprises the following steps: (a) activating the first light generation unit 1 to generate the diffused light L1, (b) activating the second light generation unit 2 to generate the light L2 directed in the emission direction R, and ( c) influencing the second light generating unit 2 such that the emission direction R changes over time.
  • both the directional light L2 and the diffused light L1 are emitted; while the period of use, for example, be at least 15 minutes, preferably at least one hour.
  • the design may be such that the emission direction R does not jump back and forth over time or the period of use, but that it changes continuously, in particular relatively slowly.
  • the design may be such that there is an angle ⁇ which is between the emission direction given at a first time t1 R (t1) and the radiation direction R (t2) given at a later second time t2 is at most 90 ° when the time interval between the first time t1 and the second time t2 is fifteen minutes or fifteen minutes.
  • the angle ⁇ is at least 5 °.
  • the directional light L2 is emitted with an intensity which remains constant at least substantially in time.
  • the intensity of the directional light L2 changes within 15 minutes or within the period of use by less than 50%, preferably by less than 20%.
  • the described effects are particularly pronounced when the second light-generating unit 2 is designed such that the emission direction R always includes an angle ⁇ , which is greater than 0 °, preferably with a normal N of the light exit surface 3 directed vertically downwards in the example shown greater than 10 °.
  • ⁇ which is greater than 0 °
  • N normal N of the light exit surface 3 directed vertically downwards in the example shown greater than 10 °.
  • the angle ⁇ is less than 70 °, in particular less than 60 °, so that a risk of glare for a user is virtually eliminated or at least reduced.
  • the light-emitting region 4 extends annularly around the light-emitting surface 3.
  • Fig. 2 is a perspective sketch of the arrangement of obliquely outlined below. It can be seen here the circular light exit surface 3 and the light emitting area 4, which is designed in accordance with annular. The light exit surface 3 is thus "central" and relatively large in area.
  • the second light-generating unit 2 is further configured such that the directional light L2 is not emitted from the entire light-emitting area 4 at one time, but only from a part or portion thereof.
  • the directional light L2 - as in Fig. 3 indicated - the second light generating unit 2 leaves only from a location area 41 within the light emitting area 4 from.
  • a particularly suitable lighting effect can be achieved if the second light generating unit 2 is designed such that this location area 41 within the light emitting area 4 is temporally variable, in particular such that the location area 41 moves along a path or a line over time , In the case of the annular design of the light emission region 4 shown here, it may be advantageously provided that the spatial region 41 moves along a circular line within the light emission region 4. This makes it particularly suitable to "model" a direct illumination by sunlight.
  • the emission direction R is represented by an arrow on the right side.
  • an analogous arrow is sketched, which accordingly symbolizes the emission direction at a different time.
  • the emission direction R is directed with respect to the arrangement or a center of the arrangement to the outside.
  • the emission direction can also be directed inward, as in the in Fig. 3 example shown the case.
  • the emission direction R is directed inwards.
  • the arrangement is fastened to a (not separately drawn) ceiling of a room and illuminates an object G which is directly below the arrangement, here below the light exit surface 3, for example, located on a master table.
  • the object G is thus directly illuminated in the course of time by the directed light L2 from different directions.
  • the shadow of the object G formed by the directional light L2 travels in a circle over time. In this way, on the one hand, a good illumination with the diffused light L1 and, on the other hand, a targeted optical highlighting of individual details of the object G by the directed light L2 is made possible.
  • the described light output of the arrangement is also advantageous in a case in which there is no object to be specially illuminated below the arrangement, for example when walls of the room are illuminated by the directional light L2 over time.
  • a corresponding circulation time of the location area 41 moving on a closed line is more than one minute and less than twelve hours, preferably more than ten minutes and less than six hours.
  • the design is preferably such that the activation of the second light-generating unit 2 takes place automatically.
  • a manual influencing of the second light generating unit 2 may be provided.
  • control can be advantageous in such a way that the diffused light L1 is emitted by the first light-generating unit 1 (within the period of use) unchanged in time or constant.
  • the arrangement is such is designed that the diffused light L1 changes in intensity over time, for example, depending on a prevailing in an environment of the arrangement of daylight. It is preferably provided that a general room lighting is effected by the diffused light L1, which is modified by the directional light L2.
  • the first light generating unit 1 here has a light guide plate 15, the light exit face 3 being formed by a surface area of the light guide plate 15, here pointing downwards. Furthermore, in this example, the first light generating unit 1 as a light source at least one LED 16, preferably a plurality of LEDs 16 which are arranged so that they radiate a light generated by them laterally over a narrow side surface of the light guide plate 15 in the latter.
  • the light exit surface 3 opposite further surface region 17 of the light guide plate 15 preferably Lichtauskoppelimplantation 18 are formed which deflect the light of the LEDs 16 down so that it at least partially leaves the light guide plate 15 via the light exit surface 3 as the diffused light L1.
  • a corresponding light control is known per se.
  • the first light generating unit 1 for generating the diffused light L1 for example, have an OLED (OLED: organic LED) or be designed such that the diffused light L1 is generated by transmitted light.
  • OLED organic LED
  • the second light-generating unit 2 can have a plurality of illuminants 11, preferably in the form of at least one LED, in particular of LEDs, which are arranged on a particularly closed line, preferably a circular line, in particular equidistantly from one another.
  • the design is furthermore preferably such that the means 11 for influencing the second light-generating unit 2 allow the lighting means 11 to be switched on and off in chronological succession. So it can be a sequential one, so to speak Control of the lighting means 11 may be provided, such that at different times the directional light L2 is emitted in different radiation directions R.
  • the location area 41-as mentioned above-to move in time, ie to "travel" along a line, for example along the named circle.
  • the second light-generating unit 2 preferably also has an optical element which serves to influence a light emitted by the light-emitting means 11, for example in the form of a reflector 5.
  • the optical element is preferably arranged in a fixed position relative to the first light-generating unit 1.
  • the reflector 5 according to the arrangement of the light emitting means 11 extends ringfömig.
  • a lens arrangement with one or more lenses or the like could be provided instead of the reflector 5, for example.
  • the light sources 11 are preferably oriented such that they radiate their light mainly in a direction which forms an angle with the surface normal N of the light exit surface 3 that is greater than 90 °, preferably greater than 100 °. As a result, the risk can be reduced that a user looks directly at a light-emitting surface of the lighting means 11 and is blinded thereby. By the reflector 5, the light of the lighting means 11 can then deflect suitable downwards.
  • a shading element 19 is provided, which is arranged in such a way next to the lighting means 11 that when looking at the arrangement from the outside a view of a light-emitting surface of the light emitting means 11 is reliably excluded.
  • Fig. 5 corresponds to the representation of Fig. 4 , with some light rays being shown by way of example for illustration.
  • the location area 41 it is not necessary for the location area 41 to travel in small, overlapping steps, but it may also be provided for it to move in jumps. In such a case, the light emitting area 4 need not be formed annularly closed.
  • the light emission area 4 extends around the light exit surface 3 of the first light generation unit 1.
  • this is not mandatory.
  • it may be provided, for example, that the directional light L2 is also emitted via the light exit surface 3. In this way, a particularly homogeneous external appearance of the arrangement can be achieved.
  • the light-emitting region 4 extends symmetrically with respect to the light-emitting surface 3. However, this is not mandatory.
  • the light-emitting region 4 can in principle also be formed asymmetrically with respect to the light-emitting surface 3.
  • the light exit surface 3 is circular and also the entire arrangement. However, this is not absolutely necessary, it can also be provided another form, for example, an elliptical, square, rectangular or otherwise polygonal.
  • the illustrated reflector 5 is a secondary reflector in principle, however, is also suitable, for example, a direct reflector accordingly.
  • the means for influencing the second light generating unit 2 is particularly discussed.
  • the arrangement preferably also has further means which are designed to influence the first light-generating unit 1, for example such that an intensity of the diffused light L1 can be changed.
  • the design such that the means and the other means can operate independently of each other, so that (within the period of use), the diffused light L1 can be basically changed independently of the direct light L2.
  • the means for influencing the second light-generating unit 2 are preferably also configured to change an intensity of the directional light L2. In this way, the intensities of the diffused light L1 and the directed light L2 can be suitably matched to each other. This also makes it advantageous to create a changing spatial impression.
  • two "optical systems" are integrated, are generated by the light with different emission characteristics, namely the diffused light L1 and the directional light L2.
  • This combination creates a balanced spatial impression.
  • variable emission direction R of the directional light L2 not only can an object be selectively illuminated, it is also possible, for example, to respond to changing furnishing of the room.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Die Erfindung betrifft eine Anordnung zur Allgemeinbeleuchtung mit einer ersten Lichterzeugungseinheit zur Erzeugung eines diffusen Lichts und einer zweiten Lichterzeugungseinheit zur Erzeugung eines gerichteten Lichts. Weiterhin betrifft die Erfindung ein Verfahren zur Ansteuerung einer derartigen Anordnung.The invention relates to an arrangement for general lighting with a first light generating unit for generating a diffused light and a second light generating unit for generating a directed light. Furthermore, the invention relates to a method for controlling such an arrangement.

Aus dem Stand der Technik ist es bekannt, zur Allgemeinbeleuchtung eines Raumes eine großflächige Leuchte zu verwenden, die diffuses Licht abgibt. Zusätzlich können Strahler installiert sein, um beispielsweise Gegenstände ergänzend gezielt zu beleuchten. Zur Erzielung einer entsprechenden Beleuchtung ist es also erforderlich, mehrere unterschiedliche Leuchten zu installieren und einzustellen. Dies kann zu einem insbesondere aus architektonischer Sicht unerwünschten Erscheinungsbild der Beleuchtungsanordnung führen. Wenn eine Veränderung der Beleuchtung gewünscht ist, müssen zudem die Leuchten entsprechend manipuliert werden.From the prior art, it is known to use a large-area light for the general lighting of a room, which emits diffused light. In addition, spotlights can be installed in order, for example, to additionally illuminate objects in a targeted manner. To achieve appropriate lighting, it is therefore necessary to install and set several different lights. This can lead to an undesirable, in particular from an architectural point of view, appearance of the lighting arrangement. If a change in the lighting is desired, the lights must also be manipulated accordingly.

Aus der US 2008/0192456 A1 ist ein künstliches Fenster bekannt, das eine Lichtbox zur Erzeugung eines diffusen Lichts aufweist, sowie eine Lampe, die mit Hilfe einer, am oberen Rand des Fensters angeordneten Schiene bewegt werden kann. Dabei lässt sich auch die Abstrahlrichtung des von der Lampe abgegeben Lichts verändern.From the US 2008/0192456 A1 For example, an artificial window is known which has a light box for producing a diffused light, and a lamp which can be moved by means of a rail arranged at the upper edge of the window. In this case, the emission direction of the light emitted by the lamp can also be changed.

Aus der JP 2013-77387 A ist eine Leuchte bekannt, die eine flächige Lichtabgabeeinheit aufweist, sowie einen Strahler, der schwenkbar gelagert ist, so dass sich die Lichtabgaberichtung ändern lässt.From the JP 2013-77387 A a luminaire is known, which has a flat light-emitting unit, as well as a radiator, which is pivotally mounted so that the light-emitting direction can be changed.

Aus der US 2014/0070724 A1 ist eine Leuchte bekannt, bei der mit Hilfe eines ersten optischen Subsystems eine gerichtete Strahlung abgegeben wird und mit Hilfe eines zweiten optischen Subsystems eine diffuse Strahlung.From the US 2014/0070724 A1 a luminaire is known in which with the aid of a first optical subsystem directional radiation is emitted and with the help of a second optical subsystem diffuse radiation.

Aus der US 2013/0293152 A1 ist eine Anordnung bekannt, die zur Nachbildung von natürlichem Licht dient.From the US 2013/0293152 A1 An arrangement is known which serves to emulate natural light.

Der Erfindung liegt die Aufgabe zugrunde, eine verbesserte Anordnung zur Allgemeinbeleuchtung anzugeben. Insbesondere soll die Anordnung vorteilhaft mit Bezug auf das äußere Erscheinungsbild sein und vorteilhaft mit Bezug auf die Beleuchtungseigenschaften. Weiterhin soll ein Verfahren zur Ansteuerung einer derartigen Anordnung angegeben werden.The invention has for its object to provide an improved arrangement for general lighting. In particular, the arrangement should be advantageous with respect to the external appearance and advantageous with respect to the lighting properties. Furthermore, a method for controlling such an arrangement is to be specified.

Diese Aufgabe wird gemäß der Erfindung mit den in den unabhängigen Ansprüchen genannten Gegenständen gelöst. Besondere Ausführungsarten der Erfindung sind in den abhängigen Ansprüchen angegeben.This object is achieved according to the invention with the objects mentioned in the independent claims. Particular embodiments of the invention are indicated in the dependent claims.

Gemäß der Erfindung ist eine Anordnung zur Allgemeinbeleuchtung vorgesehen, die eine erste Lichterzeugungseinheit zur Erzeugung eines diffusen Lichts aufweist, sowie eine zweite Lichterzeugungseinheit zur Erzeugung eines, in eine Abstrahlrichtung gerichteten Lichts. Außerdem weist die Anordnung Mittel zur Beeinflussung der zweiten Lichterzeugungseinheit auf. Dabei sind diese Mittel dazu ausgestaltet, die zweite Lichterzeugungseinheit derart zu beeinflussen, dass sich die Abstrahlrichtung verändert. Vorzugsweise kann diese Änderung zeitabhängig erfolgen.According to the invention, an arrangement for general lighting is provided, which has a first light-generating unit for generating a diffused light, and a second light-generating unit for Generation of a light directed in an emission direction. In addition, the arrangement has means for influencing the second light-generating unit. In this case, these means are designed to influence the second light generating unit such that the emission direction changes. Preferably, this change can be time-dependent.

Durch die Integration der beiden Lichterzeugungseinheiten in einer Anordnung lässt sich das äußere Erscheinungsbild besonders homogen bzw. unauffällig gestalten. Insbesondere lässt sich hierdurch ein besonders ausgewogener, ruhiger Raumeindruck erzeugen. Durch die zeitabhängige Veränderung der Abstrahlrichtung lässt sich darüber hinaus erzielen, dass sich die Beleuchtung im Laufe der Zeit verändert. Hierdurch lässt sich beispielsweise bewirken, dass sich Schatten, die von beleuchteten Gegenständen gebildet sind bzw. Lichtrichtungen im Laufe der Zeit verändern. Beispielsweise lässt sich auf diese Weise die Beleuchtungssituation derart variieren, dass ein sich verändernder Sonnenstand nachempfunden wird.The integration of the two light generating units in an arrangement makes the external appearance particularly homogeneous or inconspicuous. In particular, this makes it possible to produce a particularly balanced, quiet spatial impression. In addition, the time-dependent change in the emission direction makes it possible for the illumination to change over time. This makes it possible, for example, that shadows formed by illuminated objects or light directions change over time. For example, in this way the lighting situation can be varied in such a way that a changing position of the sun is modeled.

Erfindungsgemäß weist die erste Lichterzeugungseinheit eine vorzugsweise plane und vorzugsweise kreisförmige Lichtaustrittsfläche auf, über die das diffuse Licht abgegeben wird und die zweite Lichterzeugungseinheit einen Lichtabgabebereich, über den das gerichtete Licht abgegeben wird; dabei bildet der Lichtabgabebereich vorzugsweise einen Umgebungsbereich der Lichtaustrittsfläche. Durch eine entsprechende Lichtaustrittsfläche lässt sich beispielsweise der Eindruck eines Oberlichts hervorrufen. Wenn der Lichtabgabebereich einen Umgebungsbereich der Lichtaustrittsfläche bildet, lässt sich das gerichtete Licht besonders geeignet aus unterschiedlichen Ortsbereichen abgeben, so dass besonders geeignet ein sich verändernder Beleuchtungseffekt resultiert.According to the invention, the first light-generating unit has a preferably planar and preferably circular light exit surface, via which the diffused light is emitted, and the second light-generating unit has a light-emitting region over which the directed light is emitted; In this case, the light-emitting region preferably forms an ambient region of the light-emitting surface. By means of a corresponding light exit surface, for example, the impression of a skylight can be created. If the light-emitting region forms an ambient region of the light-emitting surface, the directed light can be emanated particularly suitably from different local areas, so that a suitably changing lighting effect results.

Vorzugsweise ist die zweite Lichterzeugungseinheit derart gestaltet, dass die Abstrahlrichtung mit einer Normalen der Lichtaustrittsfläche stets einen Winkel einschließt, der größer als 0° ist, vorzugsweise größer als 10°. Hierdurch lässt sich das gerichtete Licht sozusagen asymmetrisch abgeben.Preferably, the second light-generating unit is designed such that the emission direction with a normal of the light exit surface always includes an angle which is greater than 0 °, preferably greater than 10 °. As a result, the directional light can be emitted asymmetrically, so to speak.

Wenn dabei der Winkel kleiner als 70° ist, vorzugsweise kleiner als 60°, lässt sich die Gefahr vermindern, dass ein Nutzer durch das gerichtete Licht geblendet wird.If the angle is less than 70 °, preferably less than 60 °, can reduce the risk that a user is dazzled by the directed light.

Erfindungsgemäß erstreckt sich der Lichtabgabebereich ringförmig um die Lichtaustrittsfläche herum; dies ist vorteilhaft, weil sich auf diese Weise das gerichtete Licht - bei insgesamt großer Lichtaustrittsfläche - aus deutlich unterschiedlichen Ortsbereichen abgeben lässt. Hierzu ist es besonders zweckmäßig, wenn die Lichtaustrittsfläche einen Durchmesser von mindestens 30 cm, insbesondere mindestens 50 cm aufweist.According to the invention, the light-emitting region extends annularly around the light-emitting surface; This is advantageous because in this way the directional light - with a total of large light exit surface - can be delivered from significantly different locations. For this purpose, it is particularly expedient if the light exit surface has a diameter of at least 30 cm, in particular at least 50 cm.

Vorzugsweise ist die zweite Lichterzeugungseinheit derart gestaltet, dass ein Ortsbereich innerhalb des Lichtabgabebereichs, von dem aus das gerichtete Licht die zweite Lichterzeugungseinheit verlässt, zeitlich veränderbar ist. Hierdurch lässt sich ein sich verändernder Beleuchtungseffekt besonders geeignet erzielen.Preferably, the second light-generating unit is configured such that a location area within the light output range, from which the directional light leaves the second light-generating unit, is time-changeable. This makes it possible to achieve a changing lighting effect particularly suitable.

Vorzugsweise weist die zweite Lichterzeugungseinheit mehrere Leuchtmittel, vorzugsweise in Form von LEDs (LED: Licht emittierende Diode) auf, die durch die Mittel zur Beeinflussung der zweiten Lichterzeugungseinheit zeitlich nacheinander ein- und ausgeschaltet werden können. Auf diese Weise lässt sich der Ortsbereich, von dem aus das gerichtete Licht den Lichtabgabebereich verlässt, besonders geeignet zeitlich verändern. Vorzugsweise sind dabei die Leuchtmittel auf einer insbesondere geschlossenen Linie, vorzugsweise einer Kreislinie angeordnet, insbesondere äquidistant zueinander. Hierdurch lässt sich der Eindruck erzeugen, dass der Ortsbereich im Laufe der Zeit "wandert". Insbesondere kann hierzu vorgesehen sein, dass sich durch die Mittel die zweite Lichterzeugungseinheit derart beeinflussen lässt, dass sich der Ortsbereich entlang der Linie fortbewegt.Preferably, the second light-generating unit has a plurality of light sources, preferably in the form of LEDs (LED: light-emitting diode), which can be switched on and off successively in time by the means for influencing the second light-generating unit. In this way, the location area, from which the directional light leaves the light output area, can be changed particularly suitably in time. Preferably, the lighting means are arranged on a particular closed line, preferably a circular line, in particular equidistantly from each other. This creates the impression that the location area "wanders" over time. In particular, it can be provided for this purpose that the second light generating unit can be influenced by the means such that the local area moves along the line.

Vorzugsweise weist die zweite Lichterzeugungseinheit ein optisches Element auf, beispielsweise in Form eines Reflektors, das vorzugsweise lagefest gegenüber der ersten Lichterzeugungseinheit angeordnet ist. Hierdurch lässt sich die Anordnung besonders geeignet bautechnisch einfach gestalten.The second light-generating unit preferably has an optical element, for example in the form of a reflector, which is preferably fixed in position is arranged opposite the first light generating unit. As a result, the arrangement can be made particularly suitable structurally simple.

Vorzugsweise sind die erste Lichterzeugungseinheit und die zweite Lichterzeugungseinheit in einem gemeinsamen Gehäuse angeordnet, wobei das Gehäuse vorzugsweise dazu vorgesehen ist, an einem Deckenbereich montiert zu werden. Hierdurch lässt sich die Anordnung einfach montieren; zudem lässt sie sich auf diese Weise geeignet mit einem besonders ebenmäßigen Erscheinungsbild gestalten.Preferably, the first light-generating unit and the second light-generating unit are arranged in a common housing, wherein the housing is preferably intended to be mounted on a ceiling area. This makes it easy to assemble the arrangement; In addition, it can be designed in this way suitable with a particularly even appearance.

Gemäß einem weiteren Aspekt der Erfindung ist ein Verfahren zur Ansteuerung einer erfindungsgemäßen Anordnung zur Allgemeinbeleuchtung vorgesehen. Das Verfahren weist die folgenden Schritte auf: (a) Aktivieren einer ersten Lichterzeugungseinheit zur Erzeugung eines diffusen Lichts, (b) Aktivieren einer zweiten Lichterzeugungseinheit zur Erzeugung eines, in eine Abstrahlrichtung gerichteten Lichts, sowie den folgenden weiteren Schritt (c) Beeinflussen der zweiten Lichterzeugungseinheit derart, dass sich die Abstrahlrichtung zeitabhängig verändert. Durch die zeitabhängige Veränderung der Abstrahlrichtung lässt sich erzielen, dass sich die Beleuchtung im Laufe der Zeit verändert. Beispielsweise lässt sich auf diese Weise die Beleuchtungssituation derart variieren, dass ein sich verändernder Sonnenstand nachempfunden wird.According to a further aspect of the invention, a method for controlling a device according to the invention for general lighting is provided. The method comprises the following steps: (a) activating a first light-generating unit to produce a diffused light, (b) activating a second light-generating unit to generate a light directed in an emission direction, and the following further step (c) influencing the second light-generating unit such that the emission direction changes in a time-dependent manner. The time-dependent change in the direction of radiation makes it possible to change the lighting over time. For example, in this way the lighting situation can be varied in such a way that a changing position of the sun is modeled.

Vorzugsweise wird dabei während Schritt (c) das diffuse Licht zeitlich konstant abgegeben. Hierdurch lassen sich geeignet natürliche Lichtverhältnisse nachempfinden.Preferably during this step (c) the diffused light is emitted constantly in time. As a result, suitable natural lighting conditions can be recreated.

Vorzugsweise wird die zweite Lichterzeugungseinheit derart beeinflusst, dass sich der Ortsbereich, von dem aus das gerichtete Licht den Lichtabgabebereich verlässt, entlang der genannten geschlossenen Linie fortbewegt, derart, dass die entsprechende Umlaufzeit mehr als eine Minute und weniger als zwölf Stunden beträgt, vorzugsweise mehr als zehn Minuten und weniger als sechs Stunden.Preferably, the second light-generating unit is influenced such that the location area from which the directional light leaves the light-emitting area moves along said closed line, such that the corresponding round-trip time is more than one minute and less than twelve Hours, preferably more than ten minutes and less than six hours.

Die Erfindung wird im Folgenden anhand eines Ausführungsbeispiels und mit Bezug auf die Zeichnungen näher erläutert. Es zeigen:

Fig. 1
einen schematischen Querschnitt durch eine erfindungsgemäße Anordnung zur Lichtabgabe mit einer ersten Lichterzeugungseinheit und einer zweiten Lichterzeugungseinheit,
Fig. 2
eine perspektivische Skizze der Anordnung von schräg unten,
Fig. 3
eine, der Fig. 2 entsprechende Skizze, wobei ein Ortsbereich markiert ist, von dem aus das gerichtete Licht den Lichtabgabebereich der zweiten Lichterzeugungseinheit verlässt,
Fig. 4
eine Querschnitt-Skizze zu einem möglichen Aufbau der Anordnung,
Fig. 5
eine entsprechende Skizze, wobei exemplarische Lichtstrahlen eingezeichnet sind,
Fig. 6
eine Skizze zur Illustration eines möglichen Beleuchtungseffekts, der durch die Anordnung erzielt werden kann und
Fig. 7
eine Skizze zu einer Anwendung mehrerer Anordnungen in einem Raum.
The invention is explained in more detail below with reference to an embodiment and with reference to the drawings. Show it:
Fig. 1
a schematic cross-section through an inventive arrangement for emitting light with a first light generating unit and a second light generating unit,
Fig. 2
a perspective sketch of the arrangement of obliquely below,
Fig. 3
one of the Fig. 2 corresponding sketch, wherein a location area is marked, from which the directional light leaves the light emitting area of the second light generating unit,
Fig. 4
a cross-sectional sketch of a possible structure of the arrangement,
Fig. 5
a corresponding sketch, whereby exemplary light rays are drawn in,
Fig. 6
a sketch to illustrate a possible lighting effect that can be achieved by the arrangement and
Fig. 7
a sketch of an application of several arrangements in a room.

Fig. 1 zeigt einen schematischen Querschnitt durch eine erfindungsgemäße Anordnung zur Lichtabgabe. Bei der Anordnung kann es sich beispielsweise um eine Deckenleuchte handeln. Im gezeigten Beispiel weist die Anordnung ein Gehäuse 6 auf, das dazu ausgestaltet ist, an einem Deckenbereich eines zu beleuchtenden Raumes befestigt zu werden. Neben einer Deckenmontage ist außerdem eine Pendel- oder Einbausituation, oder aber auch eine Wandmontage möglich. Fig. 1 shows a schematic cross section through an inventive arrangement for light emission. The arrangement may be, for example to act a ceiling light. In the example shown, the arrangement comprises a housing 6, which is designed to be fastened to a ceiling area of a room to be illuminated. In addition to a ceiling mounting is also a pendulum or installation situation, or even a wall mounting possible.

Die Anordnung umfasst eine erste Lichterzeugungseinheit 1 zur Erzeugung eines diffusen Lichts L1, sowie eine zweite Lichterzeugungseinheit 2 zur Erzeugung eines, in eine Abstrahlrichtung R gerichteten Lichts L2.The arrangement comprises a first light generation unit 1 for producing a diffused light L1, and a second light generation unit 2 for generating a light L2 directed in a radiation direction R.

Bei dem diffusen Licht L1 kann es sich beispielsweise um ein Licht mit einer Lambert' schen Abstrahlcharakteristik handeln. Zweckmäßig kann die erste Lichterzeugungseinheit 1 hierzu eine vorzugsweise plane Lichtaustrittsfläche 3 aufweisen, über die das diffuse Licht L1 abgegeben wird. Im Fall einer Deckenleuchte ist die Lichtaustrittsfläche 3 vorteilhaft horizontal orientiert, wobei das diffuse Licht L1 nach unten abgegeben wird. Beispielsweise kann die Lichtaustrittsfläche 3 kreisförmig sein. Vorzugsweise ist die Lichtaustrittsfläche 3 dabei verhältnismäßig groß, beispielsweise kann sie einen Durchmesser von mindestens 30 cm oder mindestens 50 cm aufweisen; mit "Durchmesser" sei hier allgemein die maximale Erstreckung der Lichtaustrittsfläche 3 bezeichnet. Auf diese Weise lässt sich durch das diffuse Licht L1 geeignet ein natürliches diffuses Licht nachbilden, wie es beispielsweise bei einem bewölkten Himmel entsteht. Durch ein solches diffuses Licht werden insbesondere keine Schatten mit deutlichen Schattengrenzen erzeugt.The diffuse light L1 may, for example, be a light with a lambertian radiation characteristic. Appropriately, the first light generating unit 1 for this purpose have a preferably planar light exit surface 3, via which the diffused light L1 is emitted. In the case of a ceiling light, the light exit surface 3 is advantageously oriented horizontally, the diffused light L1 being emitted downwards. For example, the light exit surface 3 may be circular. Preferably, the light exit surface 3 is relatively large, for example, it may have a diameter of at least 30 cm or at least 50 cm; with "diameter" is here generally the maximum extent of the light exit surface 3 is designated. In this way, the diffuse light L1 makes it possible suitably to emulate a natural, diffused light, as occurs, for example, in the case of a cloudy sky. In particular, no shadows with clear shadow boundaries are generated by such a diffused light.

Das gerichtete Licht L2 ist vorzugsweise durch ein Lichtbündel bzw. einen Lichtkegel gebildet, der sich um die Abstrahlrichtung R herum erstreckt und einen entsprechend begrenzten Öffnungswinkel aufweist; insbesondere ist das gerichtete Licht L2 von einem kleineren Raumwinkel begrenzt als das diffuse Licht L1. Das gerichtete Licht L2 ist insbesondere so geartet, dass es durch Wechselwirkung mit Gegenständen, auf die es trifft, deutliche Schatten bzw. Schatten mit deutlichen Schattengrenzen erzeugt. Vorzugsweise weist die zweite Lichterzeugungseinheit 2 einen Lichtabgabebereich 4 auf, über den das gerichtete Licht L2 abgegeben wird, wobei der Lichtabgabebereich vorzugsweise einen Umgebungsbereich der Lichtaustrittsfläche 3 bildet.The directional light L2 is preferably formed by a light beam or a cone of light which extends around the emission direction R and has a correspondingly limited opening angle; In particular, the directional light L2 is limited by a smaller solid angle than the diffused light L1. Specifically, the directional light L2 is such that, by interacting with objects it encounters, it produces distinct shadows with clear shadow boundaries. Preferably, the second light-generating unit 2 has a light-emitting region 4, through which the directional light L2 is emitted, wherein the light-emitting region preferably forms a surrounding region of the light-emitting surface 3.

Weiterhin weist die Anordnung Mittel zur Beeinflussung der zweiten Lichterzeugungseinheit 2 auf. Dabei sind diese Mittel dazu ausgestaltet, die zweite Lichterzeugungseinheit 2 derart zu beeinflussen, dass sich die Abstrahlrichtung R zeitabhängig verändert. Auf diese Weise lässt sich erzielen, dass sich Schatten, die durch das gerichtete Licht L2 gebildet werden, im Laufe der Zeit verändern. Hierdurch lässt sich bei einem Nutzer der Anordnung ein Raumeindruck bzw. ein Raumempfinden erzeugen, der bzw. das sich im Laufe der Zeit verändert. Durch entsprechende wandernde Schatten lassen sich insbesondere Beleuchtungseffekte nachbilden, wie sie durch natürliches Sonnenlicht entstehen.Furthermore, the arrangement has means for influencing the second light-generating unit 2. In this case, these means are designed to influence the second light-generating unit 2 in such a way that the emission direction R changes over time. In this way it can be achieved that shadows, which are formed by the directed light L2, change over time. As a result, it is possible for a user of the arrangement to generate a spatial impression or a sense of space which changes over time. By appropriate wandering shadows in particular lighting effects can be reproduced, as they arise from natural sunlight.

Dementsprechend weist ein Verfahren zur Ansteuerung einer entsprechenden Anordnung die folgenden Schritte auf: (a) Aktivieren der ersten Lichterzeugungseinheit 1 zur Erzeugung des diffusen Lichts L1, (b) Aktivieren der zweiten Lichterzeugungseinheit 2 zur Erzeugung des, in die Abstrahlrichtung R gerichteten Lichts L2 und (c) Beeinflussen der zweiten Lichterzeugungseinheit 2 derart, dass sich die Abstrahlrichtung R zeitabhängig verändert.Accordingly, a method for driving a corresponding arrangement comprises the following steps: (a) activating the first light generation unit 1 to generate the diffused light L1, (b) activating the second light generation unit 2 to generate the light L2 directed in the emission direction R, and ( c) influencing the second light generating unit 2 such that the emission direction R changes over time.

Insbesondere ist dabei vorgesehen, dass innerhalb eines Nutzungszeitraums der Anordnung sowohl das gerichtete Licht L2, als auch das diffuse Licht L1 abgegeben werden; dabei kann der Nutzungszeitraum beispielsweise wenigstens 15 Minuten, vorzugsweise wenigstens eine Stunde betragen.In particular, it is provided that within a period of use of the arrangement both the directional light L2 and the diffused light L1 are emitted; while the period of use, for example, be at least 15 minutes, preferably at least one hour.

Vorteilhaft kann dabei die Gestaltung derart sein, dass die Abstrahlrichtung R im Laufe der Zeit bzw. des Nutzungszeitraums nicht hin- und her springt, sondern dass sie sich kontinuierlich, insbesondere verhältnismäßig langsam verändert. Beispielsweise kann die Gestaltung derart sein, dass sich ein Winkel Δ, der zwischen der, zu einem ersten Zeitpunkt t1 gegebenen Abstrahlrichtung R(t1) und der, zu einem späteren zweiten Zeitpunkt t2 gegebenen Abstrahlrichtung R(t2) gebildet ist, maximal 90° beträgt, wenn die Zeitspanne zwischen dem ersten Zeitpunkt t1 und dem zweiten Zeitpunkt t2 eine Viertelstunde bzw. 15 Minuten beträgt. Außerdem kann vorgesehen sein, dass der Winkel Δ mindestens 5° beträgt.Advantageously, the design may be such that the emission direction R does not jump back and forth over time or the period of use, but that it changes continuously, in particular relatively slowly. For example, the design may be such that there is an angle Δ which is between the emission direction given at a first time t1 R (t1) and the radiation direction R (t2) given at a later second time t2 is at most 90 ° when the time interval between the first time t1 and the second time t2 is fifteen minutes or fifteen minutes. In addition, it can be provided that the angle Δ is at least 5 °.

Auch kann vorgesehen sein, dass das gerichtete Licht L2 mit einer Intensität abgegeben wird, die zumindest im Wesentlichen zeitlich konstant bleibt. Beispielsweise kann vorgesehen sein, dass sich die Intensität des gerichteten Lichts L2 innerhalb von 15 Minuten oder innerhalb des Nutzungszeitraums um weniger als 50%, vorzugsweise um weniger als 20% verändert.It can also be provided that the directional light L2 is emitted with an intensity which remains constant at least substantially in time. For example, it may be provided that the intensity of the directional light L2 changes within 15 minutes or within the period of use by less than 50%, preferably by less than 20%.

Die beschriebenen Effekte sind besonders ausgeprägt, wenn die zweite Lichterzeugungseinheit 2 derart gestaltet ist, dass die Abstrahlrichtung R mit einer - im gezeigten Beispiel senkrecht nach unten gerichteten - Normalen N der Lichtaustrittsfläche 3 stets einen Winkel α einschließt, der größer als 0° ist, vorzugsweise größer als 10°. Mit "stets" soll dabei zum Ausdruck gebracht sein, dass die Abstrahlrichtung R innerhalb eines Zeitraums, in dem sie sich durch Beeinflussung durch die Mittel verändert bzw. innerhalb des Nutzungszeitraums zu keinem Zeitpunkt mit der Normalen N einen entsprechenden anderen Winkel einschließt.The described effects are particularly pronounced when the second light-generating unit 2 is designed such that the emission direction R always includes an angle α, which is greater than 0 °, preferably with a normal N of the light exit surface 3 directed vertically downwards in the example shown greater than 10 °. By "always" is intended to express that the radiation direction R within a period in which it changes by influencing by the means or at any time during the period of use with the normal N includes a corresponding other angle.

Hierdurch lässt sich für das gerichtete Licht L2 sozusagen eine Asymmetrie erzeugen. Vorzugsweise ist dabei der Winkel α kleiner als 70°, insbesondere kleiner als 60°, so dass eine Blendungsgefahr für einen Nutzer praktisch ausgeschlossen oder zumindest verringert ist.As a result, it is possible to produce an asymmetry for the directional light L2. Preferably, the angle α is less than 70 °, in particular less than 60 °, so that a risk of glare for a user is virtually eliminated or at least reduced.

Im gezeigten Beispiel erstreckt sich der Lichtabgabebereich 4 ringförmig um die Lichtaustrittsfläche 3 herum. In Fig. 2 ist eine perspektivische Skizze der Anordnung von schräg unten skizziert. Man erkennt die hier kreisförmige Lichtaustrittsfläche 3 und den Lichtabgabebereich 4, der entsprechend ringförmig gestaltet ist. Die Lichtaustrittsfläche 3 ist hier also "zentral" und vergleichsweise großflächig ausgebildet.In the example shown, the light-emitting region 4 extends annularly around the light-emitting surface 3. In Fig. 2 is a perspective sketch of the arrangement of obliquely outlined below. It can be seen here the circular light exit surface 3 and the light emitting area 4, which is designed in accordance with annular. The light exit surface 3 is thus "central" and relatively large in area.

Vorzugsweise ist dabei die zweite Lichterzeugungseinheit 2 weiterhin so gestaltet, dass das gerichtete Licht L2 in einem Zeitpunkt nicht von dem gesamten Lichtabgabebereich 4 aus abgegeben wird, sondern nur aus einem Teil oder Abschnitt desselben. Insbesondere kann vorteilhaft vorgesehen sein, dass das gerichtete Licht L2 - wie in Fig. 3 angedeutet - die zweite Lichterzeugungseinheit 2 lediglich von einem Ortsbereich 41 innerhalb des Lichtabgabebereichs 4 aus verlässt. Ein besonders geeigneter Beleuchtungseffekt lässt sich dabei erzielen, wenn die zweite Lichterzeugungseinheit 2 derart gestaltet ist, dass dieser Ortsbereich 41 innerhalb des Lichtabgabebereichs 4 zeitlich veränderbar ist, insbesondere derart, dass sich der Ortsbereich 41 im Laufe der Zeit entlang eines Weges bzw. einer Linie fortbewegt. Im Fall der hier gezeigten ringförmigen Gestaltung des Lichtabgabebereichs 4 kann hierbei vorteilhaft vorgesehen sein, dass sich der Ortsbereich 41 entlang einer Kreislinie innerhalb des Lichtabgabebereichs 4 fortbewegt. Hierdurch lässt sich besonders geeignet eine direkte Beleuchtung durch Sonnenlicht "modellieren".Preferably, the second light-generating unit 2 is further configured such that the directional light L2 is not emitted from the entire light-emitting area 4 at one time, but only from a part or portion thereof. In particular, it can be advantageously provided that the directional light L2 - as in Fig. 3 indicated - the second light generating unit 2 leaves only from a location area 41 within the light emitting area 4 from. A particularly suitable lighting effect can be achieved if the second light generating unit 2 is designed such that this location area 41 within the light emitting area 4 is temporally variable, in particular such that the location area 41 moves along a path or a line over time , In the case of the annular design of the light emission region 4 shown here, it may be advantageously provided that the spatial region 41 moves along a circular line within the light emission region 4. This makes it particularly suitable to "model" a direct illumination by sunlight.

In der Skizze der Fig. 1 ist die Abstrahlrichtung R durch einen Pfeil auf der rechten Seite repräsentiert. Auf der gegenüberliegenden linken Seite ist ein analoger Pfeil skizziert, der dementsprechend die Abstrahlrichtung zu einem anderen Zeitpunkt symbolisiert.In the sketch of the Fig. 1 the emission direction R is represented by an arrow on the right side. On the opposite left side an analogous arrow is sketched, which accordingly symbolizes the emission direction at a different time.

In dem in Fig. 1 skizzierten Fall ist die Abstrahlrichtung R mit Bezug auf die Anordnung bzw. einen Mittelpunkt der Anordnung nach außen gerichtet. Ebenso kann die Abstrahlrichtung jedoch auch nach innen gerichtet sein, wie in dem in Fig. 3 gezeigten Beispiel der Fall.In the in Fig. 1 sketched case, the emission direction R is directed with respect to the arrangement or a center of the arrangement to the outside. However, the emission direction can also be directed inward, as in the in Fig. 3 example shown the case.

Auch bei dem in Fig. 6 skizzierten Beispiel ist die Abstrahlrichtung R nach innen gerichtet. Hier ist zur Illustration eines möglichen Beleuchtungseffekts ein Fall gezeigt, in dem die Anordnung an einer (nicht gesondert gezeichneten) Decke eines Raumes befestigt ist und einen Gegenstand G beleuchtet, der sich direkt unterhalb der Anordnung, hier unterhalb der Lichtaustrittsfläche 3, beispielsweise auf einem Vorlagetisch befindet. Der Gegenstand G wird auf diese Weise im Laufe der Zeit durch das gerichtete Licht L2 aus unterschiedlichen Richtungen direkt beleuchtet. Eine derartige Situation kann beispielsweise in einem Shop vorteilhaft sein, wenn es sich bei dem Gegenstand G um einen entsprechend zu präsentierenden Gegenstand handelt. Wie angedeutet, wandert in dem gezeigten Beispiel der durch das gerichtete Licht L2 gebildete Schatten des Gegenstands G im Laufe der Zeit in einem Kreis herum. Auf diese Weise ist zum einen eine gute Ausleuchtung mit dem diffusen Licht L1 und zum anderen ein gezieltes optisches Hervorheben einzelner Details des Gegenstands G durch das gerichtete Licht L2 ermöglicht.Also at the in Fig. 6 sketched example, the emission direction R is directed inwards. Here, in order to illustrate a possible lighting effect, a case is shown in which the arrangement is fastened to a (not separately drawn) ceiling of a room and illuminates an object G which is directly below the arrangement, here below the light exit surface 3, for example, located on a master table. The object G is thus directly illuminated in the course of time by the directed light L2 from different directions. Such a situation may be advantageous, for example, in a shop if the object G is an object to be correspondingly presented. As indicated, in the example shown, the shadow of the object G formed by the directional light L2 travels in a circle over time. In this way, on the one hand, a good illumination with the diffused light L1 and, on the other hand, a targeted optical highlighting of individual details of the object G by the directed light L2 is made possible.

Allerdings ist die beschriebene Lichtabgabe der Anordnung auch in einem Fall vorteilhaft, in dem sich kein speziell zu beleuchtender Gegenstand unterhalb der Anordnung befindet, beispielsweise dann, wenn durch das gerichtete Licht L2 Wände des Raums sich zeitlich verändernd beleuchtet werden. Wie beispielsweise in Fig. 7 skizziert; dabei können, müssen aber nicht, wie in Fig. 7 gezeigt, mehrere entsprechende Anordnungen an der Decke vorgesehen sein.However, the described light output of the arrangement is also advantageous in a case in which there is no object to be specially illuminated below the arrangement, for example when walls of the room are illuminated by the directional light L2 over time. Such as in Fig. 7 outlines; can, but need not, as in Fig. 7 shown, several corresponding arrangements may be provided on the ceiling.

Für die Ansteuerung der Anordnung kann vorgesehen sein, dass eine entsprechende Umlaufzeit des sich auf einer geschlossenen Linie, also beispielsweise auf der erwähnten Kreislinie sich fortbewegenden Ortsbereichs 41 mehr als eine Minute und weniger als zwölf Stunden beträgt, vorzugsweise mehr als zehn Minuten und weniger als sechs Stunden.For the control of the arrangement, it may be provided that a corresponding circulation time of the location area 41 moving on a closed line, that is, for example, on the circled line is more than one minute and less than twelve hours, preferably more than ten minutes and less than six hours.

Vorzugsweise ist die Gestaltung derart, dass die Ansteuerung der zweiten Lichterzeugungseinheit 2 automatisch erfolgt. Alternativ oder ergänzend kann eine manuelle Beeinflussung der zweiten Lichterzeugungseinheit 2 vorgesehen sein.The design is preferably such that the activation of the second light-generating unit 2 takes place automatically. Alternatively or additionally, a manual influencing of the second light generating unit 2 may be provided.

Weiterhin vorteilhaft kann dabei die Ansteuerung derart sein, dass das diffuse Licht L1 von der ersten Lichterzeugungseinheit 1 (innerhalb des Nutzungszeitraums) zeitlich unverändert bzw. konstant abgegeben wird. Allerdings kann alternativ auch vorgesehen sein, dass die Anordnung derart gestaltet ist, dass sich das diffuse Licht L1 sich im Laufe der Zeit in seiner Intensität verändert, beispielsweise in Abhängigkeit eines in einer Umgebung der Anordnung herrschenden Tageslichts. Vorzugsweise ist vorgesehen, dass durch das diffuse Licht L1 eine allgemeine Raumbeleuchtung bewirkt wird, die durch das gerichtete Licht L2 modifiziert wird.Furthermore, the control can be advantageous in such a way that the diffused light L1 is emitted by the first light-generating unit 1 (within the period of use) unchanged in time or constant. However, alternatively, it may also be provided that the arrangement is such is designed that the diffused light L1 changes in intensity over time, for example, depending on a prevailing in an environment of the arrangement of daylight. It is preferably provided that a general room lighting is effected by the diffused light L1, which is modified by the directional light L2.

In Fig. 4 ist eine Querschnitt-Skizze zu einem möglichen Aufbau der Anordnung gezeigt. Die erste Lichterzeugungseinheit 1 weist hier eine Lichtleiterplatte 15 auf, wobei die Lichtaustrittsfläche 3 durch einen - hier nach unten weisenden - Oberflächenbereich der Lichtleiterplatte 15 gebildet ist. Weiterhin weist bei diesem Beispiel die erste Lichterzeugungseinheit 1 als Leuchtmittel wenigstens eine LED 16, vorzugsweise mehrere LEDs 16 auf, die derart angeordnet sind, dass sie ein von ihnen erzeugtes Licht seitlich über eine schmale Seitenfläche der Lichtleiterplatte 15 in Letztere einstrahlen. An einem, der Lichtaustrittsfläche 3 gegenüberliegenden weiteren Oberflächenbereich 17 der Lichtleiterplatte 15 sind vorzugsweise Lichtauskoppelelemente 18 ausgebildet, die das Licht der LEDs 16 derart nach unten ablenken, dass es zumindest teilweise im Weiteren die Lichtleiterplatte 15 über die Lichtaustrittsfläche 3 als das diffuse Licht L1 verlässt. Eine entsprechende Lichtlenkung ist an sich bekannt.In Fig. 4 a cross-sectional sketch of a possible structure of the arrangement is shown. The first light generating unit 1 here has a light guide plate 15, the light exit face 3 being formed by a surface area of the light guide plate 15, here pointing downwards. Furthermore, in this example, the first light generating unit 1 as a light source at least one LED 16, preferably a plurality of LEDs 16 which are arranged so that they radiate a light generated by them laterally over a narrow side surface of the light guide plate 15 in the latter. At one, the light exit surface 3 opposite further surface region 17 of the light guide plate 15 preferably Lichtauskoppelelemente 18 are formed which deflect the light of the LEDs 16 down so that it at least partially leaves the light guide plate 15 via the light exit surface 3 as the diffused light L1. A corresponding light control is known per se.

Alternativ kann die erste Lichterzeugungseinheit 1 zur Erzeugung des diffusen Lichts L1 beispielsweise eine OLED (OLED: organische LED) aufweisen oder derart gestaltet sein, das das diffuse Licht L1 mittels Durchlicht erzeugt wird.Alternatively, the first light generating unit 1 for generating the diffused light L1, for example, have an OLED (OLED: organic LED) or be designed such that the diffused light L1 is generated by transmitted light.

Wie weiterhin in dem in Fig. 4 gezeigten Beispiel gezeigt, kann die zweite Lichterzeugungseinheit 2 mehrere Leuchtmittel 11, vorzugsweise in Form von wenigstens einer LED aufweisen, insbesondere von LEDs, die auf einer insbesondere geschlossenen Linie, vorzugsweise einer Kreislinie angeordnet sind, insbesondere äquidistant zueinander. Dabei ist die Gestaltung weiterhin vorzugsweise derart, dass durch die Mittel zur Beeinflussung der zweiten Lichterzeugungseinheit 2 die Leuchtmittel 11 zeitlich nacheinander ein- und ausgeschaltet werden können. Es kann also sozusagen eine sequenzielle Ansteuerung der Leuchtmittel 11 vorgesehen sein, derart, dass zu unterschiedlichen Zeitpunkten das gerichtete Licht L2 in unterschiedliche Abstrahlrichtungen R abgegeben wird. Hierdurch lässt sich besonders geeignet bewirken, dass sich der Ortsbereich 41 - wie oben erwähnt - zeitlich fortbewegt, also entlang einer Linie, beispielsweise längs des genannten Kreises "wandert".As continues in the in Fig. 4 As shown in the example shown, the second light-generating unit 2 can have a plurality of illuminants 11, preferably in the form of at least one LED, in particular of LEDs, which are arranged on a particularly closed line, preferably a circular line, in particular equidistantly from one another. In this case, the design is furthermore preferably such that the means 11 for influencing the second light-generating unit 2 allow the lighting means 11 to be switched on and off in chronological succession. So it can be a sequential one, so to speak Control of the lighting means 11 may be provided, such that at different times the directional light L2 is emitted in different radiation directions R. As a result, it is particularly suitable for the location area 41-as mentioned above-to move in time, ie to "travel" along a line, for example along the named circle.

Weiterhin vorzugsweise weist die zweite Lichterzeugungseinheit 2 außerdem ein optisches Element auf, das zur Beeinflussung eines von den Leuchtmitteln 11 abgestrahlten Lichts dient, beispielsweise in Form eines Reflektors 5. Dabei ist das optische Element vorzugsweise lagefest gegenüber der ersten Lichterzeugungseinheit 1 angeordnet. Im gezeigten Beispiel erstreckt sich der Reflektor 5 entsprechend der Anordnung der Leuchtmittel 11 ringfömig. Alternativ könnte anstelle des Reflektors 5 beispielsweise eine LinsenAnordnung mit einer Linse oder mehreren Linsen oder dergleichen vorgesehen sein.Furthermore, the second light-generating unit 2 preferably also has an optical element which serves to influence a light emitted by the light-emitting means 11, for example in the form of a reflector 5. The optical element is preferably arranged in a fixed position relative to the first light-generating unit 1. In the example shown, the reflector 5 according to the arrangement of the light emitting means 11 extends ringfömig. Alternatively, instead of the reflector 5, for example, a lens arrangement with one or more lenses or the like could be provided.

Die Leuchtmittel 11 sind vorzugsweise so orientiert, dass sie ihr Licht jeweils hauptsächlich in eine Richtung abstrahlen, die mit der Flächennormalen N der Lichtaustrittsfläche 3 einen Winkel einschließt, der größer als 90° ist, vorzugsweise größer als 100°. Hierdurch lässt sich die Gefahr verringern, dass ein Nutzer unmittelbar auf eine lichtabgebende Fläche der Leuchtmittel 11 blickt und dadurch geblendet wird. Durch den Reflektor 5 lässt sich dann das Licht der Leuchtmittel 11 geeignet nach unten umlenken.The light sources 11 are preferably oriented such that they radiate their light mainly in a direction which forms an angle with the surface normal N of the light exit surface 3 that is greater than 90 °, preferably greater than 100 °. As a result, the risk can be reduced that a user looks directly at a light-emitting surface of the lighting means 11 and is blinded thereby. By the reflector 5, the light of the lighting means 11 can then deflect suitable downwards.

Im gezeigten Beispiel ist darüber hinaus noch ein Abschattungselement 19 vorgesehen, das derart neben den Leuchtmitteln 11 angeordnet ist, dass bei einer Betrachtung der Anordnung von außen ein Blick auf eine lichtabgebende Fläche der Leuchtmittel 11 zuverlässig ausgeschlossen ist.In the example shown, in addition, a shading element 19 is provided, which is arranged in such a way next to the lighting means 11 that when looking at the arrangement from the outside a view of a light-emitting surface of the light emitting means 11 is reliably excluded.

Fig. 5 entspricht der Darstellung der Fig. 4, wobei zur Illustration exemplarisch einige Lichtstrahlen eingezeichnet sind. Fig. 5 corresponds to the representation of Fig. 4 , with some light rays being shown by way of example for illustration.

Zum Erzielen des gewünschten Effekts ist es grundsätzlich nicht erforderlich, dass der Ortsbereich 41 in kleinen, sich überlappenden Schritten wandert, es kann auch vorgesehen sein, dass er sich in Sprüngen fortbewegt. In einem solchen Fall muss der Lichtabgabebereich 4 nicht ringförmig geschlossen ausgebildet sein.In principle, to achieve the desired effect, it is not necessary for the location area 41 to travel in small, overlapping steps, but it may also be provided for it to move in jumps. In such a case, the light emitting area 4 need not be formed annularly closed.

Im gezeigten Beispiel erstreckt sich der Lichtabgabebereich 4 um die Lichtaustrittsfläche 3 der ersten Lichterzeugungseinheit 1 herum. Dies ist jedoch nicht zwingend erforderlich. Alternativ kann beispielsweise vorgesehen sein, dass auch das gerichtete Licht L2 über die Lichtaustrittsfläche 3 abgegeben wird. Auf diese Weise lässt sich ein besonders homogenes äußeres Erscheinungsbild der Anordnung erzielen.In the example shown, the light emission area 4 extends around the light exit surface 3 of the first light generation unit 1. However, this is not mandatory. Alternatively, it may be provided, for example, that the directional light L2 is also emitted via the light exit surface 3. In this way, a particularly homogeneous external appearance of the arrangement can be achieved.

Beim gezeigten Beispiel erstreckt sich der Lichtabgabebereich 4 mit Bezug auf die Lichtaustrittsfläche 3 symmetrisch. Dies ist allerdings nicht zwingend erforderlich. Der Lichtabgabebereich 4 kann grundsätzlich auch asymmetrisch gegenüber der Lichtaustrittsfläche 3 ausgebildet sein.In the example shown, the light-emitting region 4 extends symmetrically with respect to the light-emitting surface 3. However, this is not mandatory. The light-emitting region 4 can in principle also be formed asymmetrically with respect to the light-emitting surface 3.

Beim gezeigten Beispiel ist die Lichtaustrittsfläche 3 kreisförmig gestaltet und ebenso auch die gesamte Anordnung. Dies ist allerdings nicht zwingend erforderlich, es kann auch eine andere Form vorgesehen sein, beispielsweise eine elliptische, quadratische, rechteckige oder anderweitig mehreckige.In the example shown, the light exit surface 3 is circular and also the entire arrangement. However, this is not absolutely necessary, it can also be provided another form, for example, an elliptical, square, rectangular or otherwise polygonal.

Bei dem gezeigten Reflektor 5 handelt es sich um einen Sekundärreflektor Grundsätzlich eignet sich allerdings auch beispielsweise ein Direktreflektor entsprechend.In the illustrated reflector 5 is a secondary reflector in principle, however, is also suitable, for example, a direct reflector accordingly.

In der obigen Beschreibung ist mit Bezug auf die Ansteuerung der beiden Lichterzeugungseinheiten 1, 2 insbesondere auf die Mittel zur Beeinflussung der zweiten Lichterzeugungseinheit 2 eingegangen. Vorzugsweise weist die Anordnung jedoch außerdem weitere Mittel auf, die zur Beeinflussung der ersten Lichterzeugungseinheit 1 ausgestaltet sind, beispielsweise derart, dass eine Intensität des diffusen Lichts L1 verändert werden kann. Vorzugsweise ist die Gestaltung derart, dass die Mittel und die weiteren Mittel unabhängig voneinander arbeiten können, so dass sich (innerhalb des Nutzungszeitraums) das diffuse Licht L1 grundsätzlich unabhängig von dem direkten Licht L2 verändern lässt. Weiterhin sind die Mittel zur Beeinflussung der zweiten Lichterzeugungseinheit 2 vorzugsweise außerdem dazu ausgestaltet, eine Intensität des gerichteten Lichts L2 zu verändern. Auf diese Weise lassen sich die Intensitäten des diffusen Lichts L1 und des gerichteten Lichts L2 geeignet aufeinander abstimmen. Auch hierdurch lässt sich vorteilhaft ein sich verändernder Raumeindruck erzeugen.In the above description, referring to the driving of the two light generating units 1, 2, the means for influencing the second light generating unit 2 is particularly discussed. However, the arrangement preferably also has further means which are designed to influence the first light-generating unit 1, for example such that an intensity of the diffused light L1 can be changed. Preferably the design such that the means and the other means can operate independently of each other, so that (within the period of use), the diffused light L1 can be basically changed independently of the direct light L2. Furthermore, the means for influencing the second light-generating unit 2 are preferably also configured to change an intensity of the directional light L2. In this way, the intensities of the diffused light L1 and the directed light L2 can be suitably matched to each other. This also makes it advantageous to create a changing spatial impression.

Bei der erfindungsgemäßen Anordnung sind sozusagen zwei "optische Systeme" integriert, durch die Licht mit unterschiedlichen Abstrahlcharakteristiken erzeugt werden, nämlich das diffuse Licht L1 und das gerichtete Licht L2. Durch diese Kombination lässt sich ein ausgewogener Raumeindruck erzeugen. Außerdem kann durch die zeitliche Variabilität des gerichteten Lichts L2 dieser Raumeindruck beeinflusst und verändert werden.In the arrangement according to the invention, so to speak, two "optical systems" are integrated, are generated by the light with different emission characteristics, namely the diffused light L1 and the directional light L2. This combination creates a balanced spatial impression. In addition, can be influenced and changed by the temporal variability of the directional light L2 this spatial impression.

Durch die veränderbare Abstrahlrichtung R des gerichteten Lichts L2 lässt sich nicht nur ein Gegenstand gezielt anstrahlen, es kann beispielsweise auch auf eine wechselnde Möblierung des Raums reagiert werden.Due to the variable emission direction R of the directional light L2, not only can an object be selectively illuminated, it is also possible, for example, to respond to changing furnishing of the room.

Durch die Integration der beiden Lichterzeugungseinheiten innerhalb einer Anordnung lässt sich erzielen, dass ein klares, ununterbrochenes Erscheinungsbild einer typischen diffusen Fächenleuchte besteht. Es lässt sich ein ruhiges Deckenbild bewirken, da nur eine Anordnung geplant werden muss. Zudem lässt sich ein Überraschungseffekt erzeugen, indem sich der Raumeindruck schnell verändert.By integrating the two light-generating units within an array, it is possible to achieve a clear, uninterrupted appearance of a typical diffused surface luminaire. It can be a quiet ceiling effect, since only one arrangement must be planned. In addition, a surprise effect can be generated by changing the impression of space quickly.

Claims (14)

  1. An assembly for general lighting, having
    - a first light-generating unit (1) for generating a diffuse light (L1),
    - a second light-generating unit (2) for generating a light (L2) directed in an emission direction (R),
    - a means for influencing the second light-generating unit (2),
    wherein the means are designed to influence the second light-generating unit (2) in such a manner that the emission direction (R) changes in a time-dependent manner,
    wherein the first light-generating unit (1) has a light exit surface (3), via which the diffuse light (L1) is emitted and the second light-generating unit (2) has a light emission area (4), via which the directed light (L2) is emitted,
    characterized in
    that the light emission area (4) extends annularly about the light exit surface (3).
  2. An assembly according to Claim 1,
    in which the light exit surface (3) is planar and preferably circular and the light emission area (4) forms a surrounding area of the light exit surface (3).
  3. An assembly according to Claim 2,
    in which the second light-generating unit (2) is designed in such a manner that the emission direction (R) with a normal (N) of the light exit surface (3) always encloses an angle (α), which is greater than 0°, preferably greater than 10°.
  4. An assembly according to Claim 3,
    in which the angle (α) is smaller than 70°, preferably smaller than 60°.
  5. An assembly according to any one of the preceding claims,
    in which the light exit surface (3) has a diameter of at least 30 cm, in particular, at least 50 cm.
  6. An assembly according to any one of the preceding claims,
    in which the second light-generating unit (2) is designed in such a manner that a local area (41) within the light emission area (4), from which the directed light (L2) leaves the second light-generating area (2), can be temporally changed.
  7. An assembly according to any one of the preceding claims,
    in which the second light-generating unit (2) has a plurality of illuminants (11), preferably in the form of LEDs, which can be switched on and off successively in time by the means for influencing the second light-generating unit (2).
  8. An assembly according to Claim 7,
    in which the illuminants (1) are arranged on an in particular closed line, preferably a circular line, in particular, equidistant to one another.
  9. An assembly with the features mentioned in Claims 6 and 8,
    in which the second light-generating unit (2) can be influenced by the means in such a manner that the local area (41) moves along the line.
  10. An assembly according to any one of the preceding claims,
    in which the second light-generating unit (2) has an optical element, for example, a reflector (5), that is preferably arranged in a fixed position relative to the first light-generating unit (1).
  11. An assembly according to any one of the preceding claims,
    in which the first light-generating unit (1) and the second light-generating unit (2) are arranged in a common housing (6), wherein the housing (6) is preferably provided to be mounted on a ceiling area.
  12. A method for the control of an assembly for general lighting according to any one of the preceding claims,
    having the following steps:
    (a) Activation of a first light-generating unit (1) for generating a diffuse light (L1),
    (b) Activation of a second light-generating unit (2) for generating a light (L2) directed in an emission direction (R),
    characterized by
    the following further step
    (c) Influencing the second light-generating unit (2) in such a manner that the emission direction (R) is changed in a time-dependent manner.
  13. A method according to Claim 12,
    in which during step (c) the diffuse light (L1) is emitted temporally constantly.
  14. A method according to Claim 12 or 13,
    wherein the assembly has the features mentioned in Claim 9,
    in which the second light-generating unit (2) is influenced in such a manner,
    that the local area (41) moves along the closed line, in such a manner, that the corresponding circulation time is more than one minute and less than twelve hours, preferably more than ten minutes and less than six hours.
EP15738630.1A 2014-07-21 2015-07-16 Assembly for general lighting and method for controlling such an assembly Active EP3172483B1 (en)

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DE102014214114.1A DE102014214114A1 (en) 2014-07-21 2014-07-21 Arrangement for general lighting and method for controlling such
PCT/EP2015/066286 WO2016012341A1 (en) 2014-07-21 2015-07-16 Assembly for general lighting and method for controlling such an assembly

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EP3172483A1 EP3172483A1 (en) 2017-05-31
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DE102017210619A1 (en) * 2017-06-23 2018-12-27 Tridonic Jennersdorf Gmbh Edge-lit LED lighting unit with combined light emission
WO2019042940A1 (en) * 2017-08-31 2019-03-07 Mitipi Ag Device for simulating shadows and/or noises of a person
CH714106A2 (en) 2017-08-31 2019-03-15 Mitipi Ag Device for simulating the shadows and noises of a person.
AT16860U1 (en) * 2019-03-25 2020-11-15 Prolicht Gmbh Lighting device
DE102021104350A1 (en) 2021-02-24 2022-08-25 smart-lamps Lichttechnik GmbH task light

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WO2016012341A1 (en) 2016-01-28
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DE102014214114A1 (en) 2016-01-21

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