EP3396242A1 - Spotlight, spotlight system and workplace with same - Google Patents

Spotlight, spotlight system and workplace with same Download PDF

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Publication number
EP3396242A1
EP3396242A1 EP18169707.9A EP18169707A EP3396242A1 EP 3396242 A1 EP3396242 A1 EP 3396242A1 EP 18169707 A EP18169707 A EP 18169707A EP 3396242 A1 EP3396242 A1 EP 3396242A1
Authority
EP
European Patent Office
Prior art keywords
light
light emitter
emitter
according
ceiling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP18169707.9A
Other languages
German (de)
French (fr)
Inventor
Kornelius Reutter
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.)
Regent Beleuchtungskoerper AG
Original Assignee
Regent Beleuchtungskoerper AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CH00569/17A priority Critical patent/CH713727A1/en
Priority to CH1242018 priority
Application filed by Regent Beleuchtungskoerper AG filed Critical Regent Beleuchtungskoerper AG
Publication of EP3396242A1 publication Critical patent/EP3396242A1/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/0008Reflectors for light sources providing for indirect lighting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00Lighting devices intended to be free-standing
    • F21S6/002Table lamps, e.g. for ambient lighting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0004Personal or domestic articles
    • F21V33/0012Furniture
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/08Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0464Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0471Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor detecting the proximity, the presence or the movement of an object or a person
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40Lighting for industrial, commercial, recreational or military use
    • F21W2131/402Lighting for industrial, commercial, recreational or military use for working places
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

A light emitter (1) for generating a stream of visible light (41) on a ceiling (5) comprises a light source (16) for generating artificial light in the visible region and an optic (12), which is formed from the of Illuminant (16) generated light to form the stream of visible light (41). The optical system (12) is further configured to define a light distribution curve of the light generated by the illuminant (16) so that a luminaire object (51) with a homogeneous luminance on the ceiling (5) can be generated.

Description

    Technical area
  • The invention relates to a light emitter for generating a stream of visible light to a ceiling according to the preamble of claim 1 and a light emitter system with at least one such light emitter and a workstation furniture with such a light emitter. Such light emitters with a light source for producing artificial light in the visible range and an optical unit which is designed to shape the stream of visible light from the light generated by the light source can be used to irradiate walls and ceilings of rooms and on that way to light rooms.
  • State of the art
  • To illuminate rooms and workplaces today lamps are used in different adapted to the particular application embodiments. In this case, it is usually attempted to generate light distribution curves with the luminaires, which permit the best possible illumination for the intended use of the luminaires.
  • Among other things, it is known to use luminaires, with which rooms are illuminated indirectly. For this purpose, the luminaires emit light on ceilings and / or walls, thus creating lighting that is often perceived as pleasant.
  • Also, in offices for illuminating workstations such as desks stand or floor lamps are often used. Although such luminaires can in part provide good illumination of individual workplaces, they can however impair and be used in the use of the room often perceived as disturbing. In particular, such lights must be set up for a possible optimal 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 installed in a room ceiling, which specifically illuminate one or more workplaces. Such surface lights can be made relatively small and focused or larger and wider luminous.
  • Although workplaces can be preferably illuminated by means of such ceiling lights and although such lights are relatively less disturbing, since they are not in places where other things are placed or people are staying, they are still 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 following invention is therefore to propose a system or components of a system which enable or enable 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 light emitter, as defined by the features of independent claim 1, and by a light emitter system, as defined by the features of independent claim 26, and a work furniture, as characterized by the features of the independent claim 29 is defined. Advantageous embodiments of the invention will become apparent from the dependent claims.
  • The essence of the invention consists in the following: A light emitter for generating a current of visible light to a ceiling, comprises a light source for generating artificial light in the visible region and an optic. The optics are designed to shape the current of visible light from the light generated by the illuminant. It is further configured to define a light distribution curve of the light generated by the light source so that a luminaire object with a homogeneous luminance on the ceiling can be generated.
  • In the context of the invention, 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 of the luminaire are connected in their different directions of radiation to form a curve. The light distribution describes the spatial distribution of the light. Shape and symmetry of the light distribution characterize a depth or width and a symmetry of the radiation.
  • The term "luminaire object", as used in connection with the invention, refers to a homogeneous closed light surface with a defined boundary or sharp edges. The luminaire object can have any shape on the ceiling. In particular, it can be formed round or polygonal on the ceiling and, for example, be designed as a spot. The term "defined limit" in this context means a decrease in the luminance at the ceiling to at most 10%, not more than 5% or almost 0%, which occurs over a maximum of about 30% of a diameter of the luminaire object or a central 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 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.
  • The term "luminance" (Lv) in the context of the invention refers to the brightness of the luminaire object on the ceiling, which acts as an extended, areal light source. It can provide information about the spatial and directional dependence of the light emitted by the luminaire object. The term "homogeneous luminance" refers to the fact that the brightness over the surface of the luminaire object is substantially the same. Here, by "substantially the same" it can be understood that the brightness in the surface of the luminaire object on the ceiling does not change by more than about 30% or about 20% or about 10% or about 5% or about 3%.
  • The light emitter can be provided in particular to emit light from the bottom to the top, in particular to a ceiling. It can be relatively compact and easily realized, for example, as a stele or Lichtstele.
  • The term "room ceiling" can refer to an upper boundary of a room here. Not necessarily but typically ceilings are aligned horizontally. They may be formed by plastered masonry, panels, stretched textile materials, metals or the like. The ceiling can be the ceiling of a closed or open space.
  • The term "visible light stream", also referred to herein simply as "luminous flux" or "beam", refers to visible light emitted by the light emitter. The luminous flux or beam can be a bundle of rays, wherein ray bundles are understood to mean a number of light rays which run exactly or approximately parallel to one another or else predominantly in a similar direction. In particular, the luminous flux can also have a propagation angle, as typically occurs in point light sources.
  • By designing the light emitter according to the invention to define a light distribution curve of the light generated by the luminous means for producing the luminaire object on the ceiling, it is possible to achieve targeted illumination in an efficient manner. In particular, the luminaire object generated on the ceiling can selectively illuminate a workplace. The term "workplace" in this context may refer to a typically horizontal or quasi-horizontal surface on which certain activities occur. For example, the workplace can 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. For example, it may comprise a flexibly grouped set of desktops, such as those compiled for collaboration in a project. Also, it can only be part of a table such as a conference table in a boardroom. In this context, the term "targeted illumination" can refer to the generation of a preferred LVK by the luminaire object, that is, a luminaire object 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.
  • The light emitter makes it possible to use the luminaire object to create a virtual luminaire or a dematerialized luminaire on the ceiling. In this case, the nature of the ceiling can be included. The term "texture" in the context of the ceiling can refer to a composition of the ceiling, their color, texture or the like. In particular, the nature of the ceiling can define their reflection properties and their emission characteristics. In this case, the ceiling can be designed in various ways to be suitable for the production of the luminaire object. For example, the ceiling can be a mirror ceiling or contain mirrors. With such a ceiling, the luminous flux can be used relatively directly and unchanged to produce the luminaire object, so that the luminaire object itself can deliver a directed luminous flux. Or the ceiling can be equipped with a lime plaster, which allows the generation of a luminaire object that gives off comparatively diffused light.
  • The light emitter according to the invention makes it possible for the ceiling itself to be used efficiently as a component of a lighting system in order to illuminate the workstation. The creation of a virtual luminaire with the light emitter according to the invention allows great flexibility in the lighting and design of Jobs. For example, in rooms where the workplaces change regularly, targeted lighting can be provided that can be adapted to changes with relatively little effort. For example, it can be prevented that suspended ceiling lights and / or free-standing or floor lamps must be changed in order to allow for changing conditions each one adapted lighting of the individual workstations. Rather, with or without re-aligning and possibly re-adjusting the light emitter, a workstation at another location in the room can be re-illuminated.
  • In addition, the inventive light emitter allows new possibilities in interior design. The virtual light can be perceived as a built-in light, without actually installation would be necessary. The light emitter also makes it possible to illuminate workplaces in rooms in which it is not possible to install or install luminaires in or on the ceiling. For example, with the light emitter ceiling lights can be generated on ceilings, which are not very powerful for installation, which are not sufficiently sustainable for installation or extension or may not be changed, for example, denkmalpflegerischen reasons. Also, no electrical connection to the room deck is needed. In addition, the light emitter can be advantageous even at relatively low room heights, since no structures protrude from the ceiling.
  • In comparison to known lighting systems with floor lamps, a lighting system realized by means of the light emitter according to the invention can have the following advantages: The luminaires or the light emitters can be made relatively flexible since no large luminaire head is necessary. The system may be advantageous in terms of material costs. The indirect lighting over the ceiling can be perceived as particularly pleasant. In addition, light graphics can be generated. With the lighting system, a self-adaptive lighting of workplaces such as explained below can be realized in real time, without having to make adjustments. The lighting system may be preferred in interior design, since no stand or larger lighting objects must be placed in the room. There is no shadow generated by direct light. The light produced can give the impression of Come close to daylight, which is often perceived as pleasant. The maintenance and installation can be relatively simple.
  • The light emitter according to the invention thus makes it possible to flexibly adapt and design specific illumination of workplaces in a room in a preferred quality.
  • Preferably, the light emitter is designed so that the homogeneous luminance of the luminaire object amounts to a maximum of about 1,500 cd / m 2 , a maximum of about 2,500 cd / m 2 or a maximum of about 3,000 cd / m 2 . With such a luminance, a preferred illumination of the workplace can be achieved in many applications. In particular, with this luminance, it is possible to provide a surface brightness perceivable by the eye of an observer, which makes the entire luminaire object appear as a single surface. This allows the luminaire object to act as a surface luminaire and appear.
  • Preferably, the optic is configured so that a brightness in an area of the luminaire object on the ceiling changes less than about 30%, less than about 20%, less than about 10%, less than about 5%, or less than about 3%. Thus, the luminance may preferably be homogeneous, so that the luminaire object appear flat and can act.
  • Preferably, the LVK of the light emitter between about 120 ° and about 170 ° and in particular at about 150 ° or about 165 ° each have a greater light intensity than at 180 °. In particular, the LVK of the light emitter preferably has a maximum light intensity between about 120 ° and about 170 ° and in particular at about 150 ° or 165 °. Such a LVK can efficiently generate a homogeneous luminance in the luminaire object. Preferably, the LVK of the light emitter is symmetrical. The light emitter may thus be directed substantially upwards.
  • Preferably, the optical system is designed to shape the light generated by the light source such that the stream of visible light has a focal point which is spaced in a radiation direction from the light source. The term "emission direction" may refer here to a main direction in which propagates the light beam generated by the light emitter or the beam. In particular, it can run along the axis of the beam.
  • In this case, the focal point of the stream of visible light in the emission direction is preferably at a distance from the optics. Such a light emitter makes it possible to produce a so-called crossbeam, that is to say a light beam with a taper or waist. This allows the beam or beam of light to expand relatively far away from the light source. As a result, a comparatively compact beam can be achieved, which can be advantageous, for example, for preventing glare effects or for reducing stray light.
  • Preferably, the light emitter comprises a diaphragm, through which the current of visible light can be conducted. With such a diaphragm stray light can be intercepted. Also, glare or glare effects can be reduced. In this case, the aperture is preferably positioned so that it can be arranged farther than the focal point of the stream of visible light from the luminous means when the luminous means generates light. As a result, the scattered light can be intercepted particularly efficiently and glare can be reduced. The term "remotely located" also includes embodiments in which the diaphragm extends closer to the light source further from the light source. It is important that an effective part of the diaphragm is further away from the light source than the remote from the bulb end of the optics or a transparent cover as described below.
  • The aperture preferably comprises a sleeve portion through which the stream of visible light passes when the illuminant generates light. Such a sleeve section can enable a simple and efficient realization of the diaphragm. In this case, the sleeve portion of the diaphragm is preferably designed to be light-absorbing on its inner side.
  • Preferably, the aperture is adjustable. Such a diaphragm makes it possible to realize a glare reduction adapted to the specific use of the light. For example, in the case of a comparatively far downwardly arranged light emitter, the aperture can be set comparatively high, so that glare-filtering is effective for persons around the light emitter. Such a light emitter can therefore be used flexibly in various different applications.
  • In this case, preferably, along a radiation direction, a distance between the optics and aperture is adjustable. This allows an efficient adjustment of the glare blocking effect of the panel, in particular, if it has a sleeve-shaped section.
  • Preferably, the light emitter comprises a sensor, with which an illuminance of the light redirected from the ceiling to the light emitter light can be detected. In this case, the light emitter preferably comprises an adjusting device, which is designed to automatically adjust the lighting means such that the illuminance detected by the sensor has approximately a predefined value. With such a light emitter can be achieved that the luminaire object generated by him illuminates an area around the light emitter itself always about equally strong. If the light emitter is changed over, for example to a location with a higher ceiling, the light emitter is reset automatically or manually until the illuminance again has the predefined value. This allows the light emitter to be used flexibly and efficiently in changing applications.
  • The predefined value may be at least about 300 lux or at least about 500 lux. Such illuminances are typically desired or preferred for the illumination of workplaces and in particular office workplaces.
  • Preferably, the light emitter has a transparent cover through which the stream of visible light exits the light emitter when the illuminant generates light. The cover can serve as dust protection, which can be advantageous in particular for generating a light beam or beam from bottom to top, since otherwise dust and other particles can get into the interior of the light emitter. Advantageously, the cover is anti-reflective.
  • The light emitter preferably comprises a joint on which the optics and the luminous means are mounted, so that the current of visible light can be aligned. Such a joint allows a simple and efficient alignment of the light beam or beam. The light emitter preferably further comprises a foot over which it can be set up on a floor. The term "ground" may in this context refer to any surface on which the light emitter should be set up. It may in particular be a floor or a table surface such as a workstation.
  • Preferably, the illuminant is an LED illuminant with at least one light-emitting diode and in particular a COB LED illuminant, a CSP LED illuminant, an LED laser or an LED array. The acronym "COB" stands for Chip On Board in this context. The acronym "COB" is understood as a technique in which unpackaged semiconductor chips are mounted directly on printed circuit boards to form an electronic assembly. The acronym "LED" stands for Light Emitting Diode or LED. The acronym "CSP" stands for Chip Scale Package. This can be understood as meaning a chip housing of integrated circuits, wherein the housing can make up a maximum of 20% more area than the die. For this purpose, the connections for mounting without bonding can be connected to the die. LED bulbs can be advantageous for many reasons. For example, they are comparatively energy-efficient, so that the light emitter can have a comparatively high degree of effectiveness. Furthermore, they are precisely configurable so that light adapted to an application can be efficiently generated. In addition, they are also comparatively durable. In particular, CSP LED bulbs also allow a relatively small size, so that the bulb can be relatively small.
  • Preferably, the luminous means is designed such that a luminous flux of the light generated by it is at least about 5,000 lumens or at least about 7,000 lumens and in particular between 9,500 lumens and 20,000 lumens or about 12,500 lumens or about 15 'Has 500 lumens. Such a luminous flux enables the luminaire object to be produced, as is preferred in many applications. In particular, such a luminaire object can be generated, as it is suitable for illuminating workstations in offices.
  • Preferably, the light emitter comprises a presence sensor and a turn-off unit. The presence sensor is aligned in the emission direction of the light emitter. The switch-off unit is designed to switch off the light source automatically on the basis of a signal generated by the presence sensor. Such a light emitter with presence sensor and switch-off unit allows the light emitter is immediately and automatically turned off or dimmed, as soon as a person or an object is in front of him. This can For example, it prevents a person from being blinded by the light emitter and possibly even being damaged. Thus, the safety and comfort of the light emitter can be improved during operation.
  • Preferably, the light emitter comprises a direct light illuminating means for generating artificial light in the visible region and a direct light optic, which are adapted to generate from the light generated by the direct light illuminant direct light directed away from the stream of visible light direct light. In the case of a vertically aligned light emitter, therefore, the stream of visible light can be directed upwards towards the ceiling and the direct light downwards, for example, onto a workstation. This makes it possible for the workstation or a specific area thereof to be illuminated in an ideal manner or in a special way.
  • In this case, the direct light optics is preferably designed to define a light distribution curve of the direct light generated by the direct light illuminant such that a work station can be illuminated. Workplaces may have special policies or other requirements that must be met. Such direct light optics can be efficiently maintained.
  • Preferably, the direct light optics is formed segmented so that it defines a light distribution curve of the direct light produced by direct light illuminant so that multiple workplaces are separately lit. The direct light optics may have, for example, two, three or four segments. At the same time, a corresponding number of workplaces can be specifically illuminated. The direct light optics can be formed in one piece or also in several parts.
  • In this case, the light emitter preferably has a control with which the lighting means and the direct light illuminant can be controlled independently. Thus, the two bulbs can be set separately and the light emitter can be selectively adjusted to its intended application. In a simple embodiment, the controller is a switch that allows the direct light illuminant to be turned on or off. For example, direct light can be switched on when needed at a workstation, for example for reading without the use of a screen, whereas the usual illumination of the workplace is done via the luminaire object.
  • Another aspect of the invention relates to a light emitter system comprising a light emitter as described above and a sensor unit independently positionable by the light emitter. The sensor unit has a sensor, with which an illuminance of the light diverted from the ceiling to a destination can be detected.
  • With such a light radiator system, the effects and advantages described above in connection with the light emitter according to the invention and its preferred embodiments can be achieved efficiently. In addition, the sensor unit allows detecting the illuminance at a destination such as a workstation that is independent of the light emitter.
  • In this case, the light emitter preferably comprises a communication interface and an adjusting device, and the sensor unit comprises a communication interface. The communication interface of the light emitter and the communication interface of the sensor unit are configured to transmit signals detected by the sensor of the sensor unit to the light emitter. The adjusting device of the light emitter is designed to automatically adjust a light source of the light emitter based on the signal received by the sensor unit such that the illuminance has approximately a predefined value.
  • It can be achieved with such a light radiator system that the luminaire object produced itself always illuminates an area around the sensor unit which can be arranged, for example, on a workstation. If the light emitter or the workplace is changed over, which happens regularly, for example, in height-adjustable desks, the light emitter is automatically or manually reset until the illuminance again has the predefined value.
  • The predefined value may be at least about 300 lux or at least about 500 lux. Such illuminances are typically desired or preferred for the illumination of workplaces and in particular office workplaces.
  • Preferably, the light emitter system comprises a plurality of light emitters. With such a light emitter system, several workplaces can be coordinated and illuminated.
  • Another further aspect of the invention relates to a workstation equipped with a light emitter as described above. The workplace furniture may in particular be a table or a desk or a conference table. With such a workplace furniture, the effects and advantages described above in connection with the light emitter according to the invention and its preferred embodiments can be achieved efficiently. In particular, the workstation itself may just include the lighting. Thus, among other things, the light emitter can be moved or mitwandern with the workplace or office table. As a result, the luminaire object is moved along the ceiling equally and regardless of where the workplace is positioned in the room, an appropriate lighting can be provided. This allows a very flexible and easy lighting of workplaces.
  • Brief description of the drawings
  • 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, the light emitter according to the invention and the light emitter system according to the invention will be described in more detail below with reference to exemplary embodiments, with reference to the attached drawings. Show it:
  • Fig. 1
    a side view of a first embodiment of a light emitter system according to the invention with a first embodiment of a light emitter according to the invention;
    Fig. 2
    an enlarged partial side view of the light emitter of Fig. 1 ;
    Fig. 3
    a light distribution curve of the light emitter of Fig. 1 ;
    Fig. 4
    a side view of a second embodiment of a light emitter system according to the invention with a second embodiment of a light emitter according to the invention;
    Fig. 5
    a light distribution curve of the light emitter of Fig. 4 ;
    Fig. 6
    a side view of a third embodiment of a light emitter system according to the invention with a third embodiment of a light emitter according to the invention;
    Fig. 5
    a light distribution curve of the light emitter of Fig. 6 ,
    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 may serve the purpose of clarity and prevention of repetition. Like reference numerals in two or more figures indicate similar or like elements.
  • To avoid repetition in the figures and the associated description of the various aspects and embodiments, it is intended that certain features be considered to be common to various aspects and embodiments. 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 may serve the purpose of clarity and prevention of repetition. In this context, the following definition applies to the entire further description: If reference signs are included in a figure for the purpose of graphic uniqueness, but are directly related thereto
  • Descriptive text is not mentioned, reference is made to their explanation in the preceding description of the figures. If reference signs are also mentioned in the description text directly related to a figure, which are not included in the associated figure, reference is made to the preceding and following figures. Like reference numerals in two or more figures indicate similar or like elements.
  • Fig. 1 shows a first embodiment of an inventive light emitter system 2, which is set up in an office room with a ceiling 5 and a desk. A top of a desktop of the desk forms a workplace 4.
  • The light emitter system 2 comprises a first embodiment of a light emitter 1 and an independently positionable from the light emitter 1 sensor unit 3. The light emitter 1 comprises a base plate 11 as a foot, a connected via an adjustable joint 14 with the base plate 11 reflector 12 as optics and a sleeve-shaped aperture 13th The base plate 11 is placed on the table top or the workstation 4. The light emitter 1 is oriented upward toward the ceiling 5.
  • As in Fig. 2 it can be seen, the light emitter 1 comprises a COB LED illuminant 16 as a light source which is mounted in the region of a base of the reflector 12 and which can emit a luminous flux of about 12,500 lumens. The reflector 12 is formed as a kind of sleeve with parabolic inner surfaces and is irradiated by the COB LED illuminant 16 emitted light. In this case, the reflector 12 is designed to form a current of visible light or a luminous flux 41 or a beam from the light generated by the COB LED illuminant 16. The luminous flux 41 has a focal point 411 which is upwardly spaced in a radiation direction 161 from the COB LED illuminant 16.
  • The aperture 13 is adjustable along the emission direction 161 upwards and downwards. It comprises a substantially sleeve-shaped section penetrated by the luminous flux 41 and light-absorbing on its inner side. In the in Fig. 2 shown setting is the focus 411 of the luminous flux 41 in the sleeve-shaped portion and is thus covered by the aperture 13. The aperture 13 Thus, scattered light from the luminous flux 41 and deblends the light emitter 1 adapted to the particular application.
  • The light emitter 1 further comprises a presence sensor 19 and a turn-off unit. The presence sensor 19 is aligned in the emission direction 161 and the switch-off unit is designed to automatically switch off the light-emitting means 16 on the basis of a signal generated by the presence sensor 19.
  • The reflector 12 is configured to form a light distribution curve 6 of the light generated by the COB LED illuminant 16 as in FIG Fig. 3 to be defined. In particular, the LVK 6 has a greater light intensity on both sides at about 165 ° than at 180 °. It has at about 165 ° each maximum light intensity.
  • As in Fig. 1 can be seen, the luminous flux 41 generates a virtual luminaire object 51 on the ceiling 5. It is achieved by means of the LVK 6 that the luminaire object 51 has a homogeneous luminance. The homogeneous luminance of the luminaire object 51 is at most about 3,000 Cd / m 2 . A brightness in the surface of the luminaire 51 changes by less than 3%. The luminaire object 51 in turn emits light 42, which corresponds to the reflected light of the luminous flux 41, in the direction of the workstation 4. The light 42 of the luminaire object 51 illuminates the workstation 4.
  • The sensor unit 3 arranged on the workstation 4 comprises a first communication interface and a sensor with which an illuminance of the light 42 or the light 42 of the luminaire object 51 diverted from the ceiling 5 to the workstation 4 is detected. The light emitter 1 is equipped with a second communication interface and an adjusting device. Via the second communication interface and the first communication interface, signals detected by the sensor of the sensor unit 3 can be transmitted to the light emitter 1. The adjusting device of the light emitter 1 automatically adjusts the COB LED illuminant 16 on the basis of the signals received by the sensor unit 3, so that the illuminance has a predefined minimum value at the workstation 4 of approximately 500 lux.
  • The light emitter 1 further has a transparent cover 17, which covers the reflector 12 upwards. In operation, the luminous flux 41 is passed through the cover 17 after passing through the reflector 12.
  • The light emitter 1 further comprises a further sensor 15, which is placed on the base plate 11 and with which the illuminance of the light 42 of the luminaire object 51 is detected. The adjusting device of the light emitter 1 automatically adjusts the COB LED illuminant 16 on the basis of signals detected by the further sensor 15, so that the illuminance has the predefined minimum value of approximately 500 lux. The further sensor 15 supplements the sensor unit 3 and the two can optionally be switched on and off.
  • Fig. 4 shows a second embodiment of an inventive light emitter system 20 with a second embodiment of a light emitter 10. The light emitter system 20 is in an office room with a ceiling 5 and a desk set up. A top of a table top of the desk forms a workstation 40. The light emitter 19 is formed as a floor lamp with a foot having leg 150.
  • The light emitter 10 has a lamp body 130 carried by the leg 150, which is similar in terms of lighting technology to that of the first light emitter of FIG Fig. 2 is trained. In particular, it comprises an upper COB LED illuminant as lighting means, which can emit a luminous flux of about 12,500 lumens upward via an upper reflector, a lower LED illuminant as direct illuminant and a lower reflector assigned to the lower LED illuminant as direct light optics, which together can output direct light 430 downwards. The lamp body 130 is also equipped with an upper reflector, which is designed to form a stream of visible light or a luminous flux 410 or a beam from the light generated by the upper COB LED illuminant. The luminous flux 410 is aligned upward toward the ceiling 51.
  • The reflector and the lower reflector are configured to provide a light distribution curve 60 of the light generated by the COB LED illuminant and the LED illuminant, as in FIG Fig. 5 to be defined. In particular, the LVK 60 has an indirect light component 610 and a direct light component 620. The indirect light component 610 describes on both sides at about 165 ° a greater light intensity than at 180 °. Of the Direct light component 620 is almost opposite to the indirect light component 610. He describes on both sides at about 40 ° a greater light intensity than at 0 °. The maximum light intensity of the entire LVK 60 lies in the indirect light component 610 on both sides at about 165 ° each.
  • As in Fig. 4 can be seen, the luminous flux 410 generates a virtual luminaire object 510 on the ceiling 50. It is achieved by means of the LVK 60 that the luminaire object 510 has a homogeneous luminance. The homogeneous luminance of the luminaire object 510 is a maximum of about 3,000 Cd / m 2 . A brightness in the surface of the luminaire object 510 changes by less than 3%. The luminaire object 510 in turn emits light 420, which corresponds to the reflected light of the luminous flux 410, downwards. The direct light 430 radiates downwards and illuminates the workplace evenly in an illuminated area 440.
  • In Fig. 6 a third embodiment of an inventive light emitter system 29 is shown with a third embodiment of a light emitter 19. The light emitter system 29 is similar to the light emitter system 20 of FIG Fig. 4 formed with a lighting means, a direct light and associated reflectors having lamp body 139. It is arranged in an office room with a ceiling 50 and a workstation 49.
  • As in Fig. 7 It can be seen that the upper luminous means and the associated upper reflector are configured to generate an indirect light component 619 of a LVK 69, which is formed analogously to the indirect light component 610 of the LVK 60 of the light radiator 20. On the other hand, the lower luminous means or the direct light illuminant and the associated lower reflector are arranged such that an asymmetrical direct light component 629 of the LVK 69 is generated. The direct light component 629 is directed only to the right and has a maximum at almost 60 °.
  • As in Fig. 6 is best seen, it allows this design of the LVK 69 on the one hand a basic lighting in the room and on the other hand on the workstation 49 obliquely to produce an illuminated surface 449. This allows the light emitter 19 to be set up laterally next to the illuminated area 449 on the workstation 49. The light emitter 19 is equipped with a table base 159 for this purpose.
  • 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.
  • 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 (16)

  1. A light emitter (1) for generating a stream of visible light (41) on a ceiling (5), with a light source (16) for generating artificial light in the visible range and an optic (12), which is formed from the of Illuminant (16) to form the stream of visible light (41), characterized in that the optic (12) is adapted to define a light distribution curve (6) of the light generated by the illuminant (16) so that a luminous object (51) with a homogeneous luminance on the ceiling (5) can be generated.
  2. Light emitter (1) according to claim 1, which is designed so that the homogeneous luminance of the luminaire object (51) a maximum of about 1'500 Cd / m 2 , a maximum of about 2'500 Cd / m 2 or a maximum of about 3'000 Cd / m 2 .
  3. A light emitter (1) according to claim 1 or 2, wherein the optic (12) is adapted to reduce a brightness in a surface of the luminaire object (51) on the ceiling (5) by less than about 30%, less than about 20%. less than about 10%, less than about 5%, or less than about 3%.
  4. A light emitter (1) according to any one of the preceding claims, wherein the light distribution curve (6) has a maximum light intensity between about 120 ° and about 170 ° and in particular about 150 ° or about 165 °.
  5. A light emitter (1) according to any one of the preceding claims, wherein the optic (12) is adapted to shape the light generated by the illuminant (16) such that the stream of visible light (41) has a focal point (411) in a radiation direction (161) from the light emitting means (16) is spaced, wherein the focal point (411) of the stream of visible light (41), preferably in the emission direction (161) from the optical system (12) is spaced.
  6. Light emitter (1) according to one of the preceding claims, comprising a sensor (15) with which an illuminance of the light (42) deflected back from the ceiling (5) to the light emitter (1) can be detected, wherein the light emitter (1) is preferably an adjusting device which is adapted to automatically adjust the lighting means (16) so that the illuminance detected by the sensor (15) has approximately a predefined value
  7. A light emitter (1) according to any one of the preceding claims, comprising a transparent cover (17) through which the stream of visible light (41) exits the light emitter (1) when the illuminant (16) generates light.
  8. Light emitter (1) according to one of the preceding claims, in which the luminous means (16) is designed so that a luminous flux of the light generated by it is at least about 5,000 lumens or at least about 7,000 lumens and in particular between 9,500 lumens and 20,000 lumens, or about 12,500 lumens, or about 15,500 lumens.
  9. A light emitter (1) according to any one of the preceding claims, comprising a presence sensor (19) and a turn-off unit, wherein the presence sensor (19) is aligned in a radiation direction (161) of the light emitter (1) and wherein the turn-off unit is adapted to illuminate the light source (16) automatically turn off due to a signal generated by the presence sensor (19).
  10. A light emitter (1) according to any one of the preceding claims, comprising direct light illuminating means for producing artificial light in the visible region and direct light optics adapted to direct light almost turned away from the visible light (41) from the light generated by the direct light illuminant The direct light optics are preferably designed to define a light distribution curve of the direct light generated by the direct light illuminant such that a work station can be illuminated.
  11. The light emitter of claim 10, wherein the direct light optic is segmented to define a light distribution curve of the direct light produced by the direct light illuminant such that multiple workplaces are separately illuminable.
  12. Light emitter according to claim 10 or 11, having a control with which the lighting means (16) and the direct light illuminant are independently controllable.
  13. Light radiator system comprising a light emitter (1) according to one of the preceding claims and a sensor unit (3) which can be placed independently by the light emitter (1), wherein the sensor unit (3) has a sensor with which an illuminance of the room ceiling (5) to a destination redirected light (42) is detectable.
  14. A light radiating system according to claim 13, wherein the light emitter (1) comprises a communication interface and an adjusting device, and wherein the sensor unit (3) comprises a communication interface, wherein
    the communication interface of the light emitter (1) and the communication interface of the sensor unit (3) are configured to transmit signals detected by the sensor of the sensor unit (3) to the light emitter (1), and
    the adjusting device of the light emitter (1) is designed to set a light source (16) of the light emitter (1) automatically on the basis of the signals received by the sensor unit (3) such that the illuminance has approximately a predefined value.
  15. A light emitter system according to claim 13 or 14, comprising a plurality of light emitters (1) according to any one of claims 1 to 12.
  16. Workplace furniture equipped with a light emitter (1) according to one of claims 1 to 12.
EP18169707.9A 2017-04-28 2018-04-27 Spotlight, spotlight system and workplace with same Pending EP3396242A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH00569/17A CH713727A1 (en) 2017-04-28 2017-04-28 Light emitter and light emitter system and workstation furniture with such.
CH1242018 2018-02-02

Publications (1)

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EP3396242A1 true EP3396242A1 (en) 2018-10-31

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Application Number Title Priority Date Filing Date
EP18169707.9A Pending EP3396242A1 (en) 2017-04-28 2018-04-27 Spotlight, spotlight system and workplace with same

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EP (1) EP3396242A1 (en)

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US4218727A (en) * 1978-07-03 1980-08-19 Sylvan R. Shemitz And Associates, Inc. Luminaire
US4386392A (en) * 1980-11-17 1983-05-31 Whiteway Manufacturing Co. Lighting unit for providing indirect light of uniform intensity
US4667275A (en) * 1979-06-08 1987-05-19 Peerless Lighting Corporation Luminaire for indirect lighting
US20120257383A1 (en) * 2011-04-08 2012-10-11 Lunera Lighting Inc. Light well providing wide angle up lighting in a led luminaire
WO2015074154A1 (en) * 2013-11-22 2015-05-28 Fluxwerx Illumination Inc. Light extraction elements for indirect light distribution
US20150285450A1 (en) * 2012-10-19 2015-10-08 Koninklijke Philips N.V. Lighting device for indirect illumination
US20150373806A1 (en) * 2013-01-25 2015-12-24 Koninklijke Philips N.V. Lighting device and lighting system
WO2016171505A1 (en) * 2015-04-23 2016-10-27 주식회사 케이엠더블유 Led lighting device

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Publication number Priority date Publication date Assignee Title
US4001575A (en) * 1975-05-27 1977-01-04 Johns-Manville Corporation Luminaire and luminaire arrangement for lighting the ceiling within a room
US4218727A (en) * 1978-07-03 1980-08-19 Sylvan R. Shemitz And Associates, Inc. Luminaire
US4667275A (en) * 1979-06-08 1987-05-19 Peerless Lighting Corporation Luminaire for indirect lighting
US4386392A (en) * 1980-11-17 1983-05-31 Whiteway Manufacturing Co. Lighting unit for providing indirect light of uniform intensity
US20120257383A1 (en) * 2011-04-08 2012-10-11 Lunera Lighting Inc. Light well providing wide angle up lighting in a led luminaire
US20150285450A1 (en) * 2012-10-19 2015-10-08 Koninklijke Philips N.V. Lighting device for indirect illumination
US20150373806A1 (en) * 2013-01-25 2015-12-24 Koninklijke Philips N.V. Lighting device and lighting system
WO2015074154A1 (en) * 2013-11-22 2015-05-28 Fluxwerx Illumination Inc. Light extraction elements for indirect light distribution
WO2016171505A1 (en) * 2015-04-23 2016-10-27 주식회사 케이엠더블유 Led lighting device

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