EP3798506A1 - Light cover for a linear lighting system - Google Patents
Light cover for a linear lighting system Download PDFInfo
- Publication number
- EP3798506A1 EP3798506A1 EP19199381.5A EP19199381A EP3798506A1 EP 3798506 A1 EP3798506 A1 EP 3798506A1 EP 19199381 A EP19199381 A EP 19199381A EP 3798506 A1 EP3798506 A1 EP 3798506A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lighting system
- reflector
- cover
- lamp
- profile
- 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.)
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Classifications
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- 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
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
- F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
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- 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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/12—Combinations of only three kinds of elements
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- 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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
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- 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
- F21V7/0025—Combination of two or more reflectors for a single light source
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- 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
- F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
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- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
- F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
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- 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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
- F21V3/062—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics
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- 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
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
- F21V5/043—Refractors for light sources of lens shape the lens having cylindrical faces, e.g. rod lenses, toric lenses
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- 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
- F21V7/04—Optical design
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- 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
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
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- 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
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
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- 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]
Definitions
- the linear lighting system comprising a lamp housing, a lamp carrier and a lamp, the linear lighting system extending along a longitudinal direction and the lamp being essentially perpendicular to the longitudinal direction of the linear lighting system Has radiation plane, the cover extending in the longitudinal direction and being releasably connectable to the linear lighting system, the cover distributing the light emitted by the illuminant asymmetrically in a transverse direction.
- the light output of linear lighting systems can be influenced by means of a large number of optical or mechanical systems such as diaphragms, lenses, grids or reflectors.
- the direction-dependent emission of the light from a luminaire and the optimized light control guarantee, on the one hand, a better light yield and, on the other hand, they minimize energy loss.
- Spotlights and spots usually have a symmetrical cone of light, which is perceived as a circle on vertically illuminated surfaces.
- floodlights should often have a uniform illuminance, for example to uniformly illuminate pictures or walls. This can be achieved with the help of an asymmetrical radiation characteristic in that asymmetrical reflectors at the light exit reduce the light output to one side.
- the light output on the floor can be limited by using suitable screens.
- LED boards are used as illuminants for some wallwashers and a reflector is used for each LED chip to deflect the light output. This means that the distance between the LED chips and the LEDs used play a major role in this case and cannot simply be changed or exchanged. In addition, the radiation characteristics cannot simply be changed, since each individual reflector would have to be replaced.
- recessed luminaires that are to have wallwasher characteristics
- the reflectors used must usually also protrude from the ceiling. Therefore, a recessed luminaire that is supposed to illuminate a wall cannot be installed flush with the ceiling together with the cover.
- This arrangement of the reflectors according to the invention enables an asymmetrical light distribution of the light emitted by the illuminant in the radiation plane. Due to the special inclination of the reflectors, which are opposite each other, in relation to the radiation plane, the light emitted by the illuminant can be reflected onto one side of the lighting system.
- the translucent middle section of the profile also allows radiation in an area below the illuminant that is parallel to the radiation plane.
- the middle section and the first and second reflector of the profile are seamlessly connected to one another. That is, the sections of the profile form a single component and the cover can be attached to the luminaire housing in one piece. This also allows the radiation characteristics to be changed very flexibly, since the entire cover can simply be exchanged quickly.
- the middle section has a surface which is preferably not parallel to the radiation plane, the angle of inclination of the middle section to the radiation plane preferably being between 20 and 50 °.
- the alignment of the translucent central section is therefore essential for the asymmetrical emission characteristic of the lighting system according to the invention.
- first and the second reflector preferably each have two differently curved surfaces, the acute angle between the tangential plane at each point of the first reflector and the radiation plane being preferably 40 to 85 °, the obtuse angle between the tangential plane in each point of the second reflector and the radiation plane is preferably 110 to 150 °.
- the two different curves of each reflector can be calculated depending on the desired radiation characteristics.
- the first and second reflectors are essentially curved and aligned in such a way that the light emitted by the illuminant is reflected onto one side of the lighting system.
- the middle section is preferably arranged in the profile in such a way that it is essentially normal to the first and second reflectors. If the middle section has a flat surface, one side of the surface is connected in the longitudinal direction to the first reflector and the other side of the surface is connected in the longitudinal direction to the second reflector.
- the profile comprises a first or second opaque section.
- the first opaque portion extends on one side of the profile in the longitudinal direction and the second opaque portion extends on the other side of the profile in the longitudinal direction.
- the first opaque section is seamlessly connected to the first reflector and the second opaque section is seamlessly connected to the second reflector.
- the first and the second opaque section are preferably designed in such a way that the profile can be detachably connected to the linear lighting system.
- each of the opaque sections can have a click profile that can be clicked into the luminaire housing. This enables the cover to be attached and removed quickly to and from the lighting system without the need for a special tool.
- the profile can be produced by means of co-extrusion, for example tri-extrusion, the profile preferably consisting essentially of polycarbonate.
- An extrusion process enables the sections of the profile to be seamlessly connected, which thus merge into a single part.
- the special curvatures of the first and second reflector can be shaped very precisely in a tri-extrusion or co-extrusion.
- a linear lighting system in particular a wallwasher
- a cover according to the invention comprising a lamp housing, a lamp carrier and a lamp, preferably a linear LED board, the cover at the lower end of the lamp housing essentially adjoining the lamp is attachable.
- the cover can be clicked into the lamp housing, for example, as described above.
- the lamp housing can first be attached to a ceiling / wall and the lamp holder and the lamp can either be fastened in the lamp housing before it is installed or afterwards.
- the cover can be attached to the lighting system very easily and quickly after installation.
- the cover according to the invention attached to the luminaire housing allows the following light emission characteristics.
- the middle section lets light that is emitted directly from the lamp through on the one hand to a surface arranged parallel to the radiation plane below the lamp housing and on the other hand to the first and second reflector, from where the light is reflected on one side of the lighting system onto a vertical surface, whereby essentially the entire vertical area is illuminated on this side of the lighting system.
- at least one of the reflectors reflects light that comes directly from the lamp onto the middle section, which is in turn emitted from there onto an area below the lamp housing which is arranged parallel to the radiation plane.
- the radiation characteristic described above corresponds to an asymmetrical light distribution in the transverse direction of the linear lighting system.
- the Cover according to the invention directly illuminates a wall to the side of the lighting system mounted on the ceiling, while the rest of the room in which the lighting system is located is illuminated indirectly.
- a person in the room is in no way blinded by the lighting system, since the lighting on the floor is indirect.
- the alignment with respect to the radiation plane and the special curvature of the reflectors also enable the entire illuminated wall to be illuminated at the side of the lighting system. More precisely, the light emitted by the illuminant is deflected by the reflectors up to the light exit plane of the cover, that is, the upper area of the wall is also completely illuminated.
- Another embodiment of the lighting system comprises a plano-convex, preferably highly transparent lens, the lens being fixed between the illuminant and the profile in the luminaire housing, the planar side of the lens facing the illuminant.
- the flat side is preferably parallel to the radiation plane of the illuminant.
- the lens enables more efficient light emission, as it emits the light emitted by the lamp in a more focused manner onto the cover located below. This means that the lens essentially corresponds to a converging lens.
- the linear lighting system can be a recessed luminaire attached to the ceiling.
- a great advantage of the cover according to the invention is that, in the case of built-in lights, it can be attached to the light housing flush with the ceiling. As a result, the appearance of the lighting system is not changed, regardless of the radiation characteristics.
- the cover according to the invention can be attached to one and the same lighting system in two different ways. More precisely, the cover can be attached to the luminaire housing rotated by 180 ° in the longitudinal direction. As a result, the light emitted by the illuminant is reflected onto the side of the linear lighting system that was not previously illuminated. Thus, it is only after the installation of the lighting system that a decision can be made as to whether it should be emitted to the right or left in relation to the longitudinal direction.
- cover has a first and second opaque section which comprise a flat surface that is parallel to the ceiling and directly adjoins it. In the case of recessed luminaires, these flat surfaces therefore form a direct extension of the ceiling. These flat surfaces are particularly important for wallwashers, since the opaque sections are impermeable to light and therefore no light is allowed to pass through to the floor at these points. Depending on the size of these opaque areas, only one wall to the side of the lighting system or only part of this wall can be illuminated.
- Fig. 1 the cover according to the invention for influencing the light output of a linear lighting system is shown.
- the cross section of the cover which extends in a longitudinal direction, can be seen here.
- the cover comprises a profile 9 made up of at least three sections.
- the profile 9 has a primarily translucent central section 3, a first reflector 4 and a second reflector 5.
- the first reflector 4 is arranged on one side of the middle section 3 and the second reflector 5 is arranged on the other side of the middle section 4.
- the middle section 3 and the reflectors 4, 5 extend in the longitudinal direction of the profile 9.
- the middle section and the two reflectors 3, 4, 5 of the profile 9 are seamlessly connected to one another.
- the middle section 3 may have a flat surface. This surface is preferably not parallel to the radiation plane 10.
- the angle of inclination of the central section 3 to the radiation plane 10 is preferably between 20 and 50 °. Light can exit through the translucent section 3 without being deflected.
- the flat surface is roughly in the middle of the cover and extends the entire length.
- the tangential plane at each point of the first reflector 4 is inclined at an acute angle on the side of the radiation plane 10 facing the first reflector 4, as seen from the lighting means 1.
- the tangential plane at each point of the second reflector 5 is inclined at an obtuse angle on the side of the radiation plane 10 facing the second reflector 5, as seen from the lighting means 1.
- the first and the second reflector 4, 5 each comprise two differently curved surfaces.
- the acute angle ⁇ between the tangential plane at each point of the first reflector 4 and the radiation plane 10 is preferably 40 to 85 °.
- the obtuse angle ⁇ between the tangential plane at each point of the second reflector 5 and the radiation plane 10 is preferably 110 to 150 °.
- the exemplary profile 9 comprises a first or second opaque section 6, 6 '.
- the first opaque section 6 extends in the longitudinal direction on one side of the profile 9 and is seamlessly connected to the first reflector 4.
- the second opaque section 6 ′ extends in the longitudinal direction on the other side of the profile 9 and is seamlessly connected to the second reflector 5.
- a seamless connection is achieved in that the profile 9 is produced in a tri or co-extrusion process.
- the profile 9 is preferably made of polycarbonate.
- the first and second reflectors 4, 5 are arranged in such a way that the middle section 3 is essentially normal to each of the two reflectors 4, 5.
- the first and second opaque sections 6, 6 ' can each be designed at the end which is not connected to the first and second reflector 4, 5 in such a way that the cover can be detachably connected to a linear lighting system.
- a click profile is clearly visible, with which the cover can be clicked into the lighting system quickly and easily.
- the above-described cover according to the invention can be attached directly under a lamp. This enables an asymmetrical light distribution of the luminaire.
- the cover is located approximately in the middle under one Illuminant 1, which can be attached to a illuminant carrier 7.
- a preferably highly transparent lens 2a which allows a more efficient light yield, can be located under the lighting means 1.
- Fig. 4 the beam path is shown schematically, which from the lighting means 1 hits the upper part of the first reflector 4, from where it is reflected on the middle section 3. From there, the light is transmitted onto an area below the profile 9 which is arranged parallel to the radiation plane 10.
- Fig. 4 shows an example of a further beam path of the luminous means 1, which goes directly through the translucent middle section 3 of the profile 9 and from there strikes a lower part of the first reflector 4. From there, the light is reflected onto the upper area of a vertical surface, which is located on one side of the lighting system.
- Fig. 5 shows a further beam path of the luminous means 1, which again goes through the translucent central section 3 of the profile 9, but then essentially hits the entire second reflector 5.
- the second reflector 5 is curved to such an extent that the light incident there is reflected onto the lower region of the vertical surface, which is located on the same side of the lighting system as before.
- Fig. 6 the combination of all beam paths is shown schematically, i.e. the entire asymmetrical light path. Part of the horizontal area under the cover and the vertical area on one side of the cover are illuminated.
- the present invention also discloses a linear lighting system, particularly a wallwasher, as in FIG Fig. 7 shown.
- This linear lighting system comprises a lamp housing 8, a lamp carrier 7 and a lamp 1, preferably a linear LED board.
- the cover according to the invention can essentially then be attached to the lighting means 1.
- the cover is only attached to the luminaire housing 8 at a later date, that is, after the luminaire has been installed.
- the alignment of the lighting means 8 in advance does not play a role either, since the cover allows an asymmetrical light distribution afterwards. With the profile 9, only a single component is required for this.
- a plano-convex, preferably highly transparent lens 2a can be fixed on the lamp housing 8 between the lamp 1 and the profile 9.
- the flat side of the lens 2a faces the lighting means 1.
- Such a lens 2a can increase the efficiency of the lighting means 1.
- a highly transparent plate can also be positioned between the cover and the illuminant 1 in order to offer adequate SELV protection.
- the linear lighting system is preferably a built-in lamp attached to the ceiling.
- a great advantage of the cover according to the invention is that it can also be attached to the luminaire housing 8 flush with the ceiling. This means that the light emitted by the lighting means 1 in the built-in lamp can be deflected on one side of the cover up to the light exit plane of the cover with the aid of the profile 9, which is fitted flush with the ceiling. This deflection is achieved by the special curvature of the first and second reflectors 4, 5 and their inclination to the radiation plane 10. Therefore, the radiation characteristics of a wall washer can also be achieved without inclining or modifying the lighting means 1, preferably an LED circuit board. For example, the entire wall, which is located to the side of a built-in lamp attached to the ceiling, is illuminated up to the ceiling, that is to say up to the light exit plane of the cover.
- the first and second opaque sections 6, 6 'of the profile 9 according to the invention serve, on the one hand, to shield light and, on the other hand, to fix the cover on the luminaire housing 8.
- the first and / or the second opaque section 6, 6 'can have at least one flat surface which is parallel to the ceiling and directly adjoins it. This opaque surface is especially important for the radiation characteristics of a wall washer, since no light is allowed to penetrate the floor at this point. Thus, depending on the size of the opaque areas, only the wall on the side of the cover or only part of the wall can be illuminated.
- the profile 9 can be clicked into the luminaire housing 8 in two ways due to the completely symmetrical design of the edges of the first and second opaque sections 6, 6 ′. More precisely, the profile 9 can simply be rotated through 180 ° in the longitudinal direction and thus in turn fixed to the lamp housing 8. As a result of this rotation, the previously not illuminated vertical surface is illuminated on one side of the linear lighting system, while the previously illuminated side is no longer illuminated.
- the cover according to the invention the asymmetrical emission direction of a lamp can easily be changed without changing the position of the lighting means 1 itself. That means in Fig. 4-6 the light would no longer be emitted to the right but to the left of the lighting system.
- the same linear lighting system can also be used to illuminate the interior walls of a room once and the exterior walls of a room once.
- the cover according to the invention can also be adapted very easily to a linear lighting system following the course of the wall.
- the lighting system can be bent by 90 ° for a wall-to-wall or a ceiling-to-wall transition, for example.
- the profile 9 according to the invention can be mitred at one end so that it can be clicked into the lamp housing 8.
- an entire room can be illuminated in accordance with standards.
- the profile 9 enables good masking and the first and second reflectors 4, 5 allow indirect lighting of the room, which is pleasant and glare-free for the viewer standing in the depth of the room.
- FIGs 8a-8c the light distribution characteristics of the cover according to the invention is shown using an example.
- a hallway with a width of 2.5 m and a room height of 2.8 m is to be illuminated with a linear lighting system including a cover according to the invention.
- the lighting system should be in be installed flush with the ceiling about 0.8 m from one of the walls, with the degree of reflection of the wall being 0.78, which corresponds to a plastered plasterboard wall.
- An LED board (LLE G4) with a size of 24 ⁇ 560 mm and a luminosity of 2400lm was used as the light source.
- Figure 8a shows the emission characteristics with the aid of a light distribution curve of the above-described lighting system including the cover according to the invention. It can be clearly seen that in the cutting plane in the transverse direction (C0-C180 plane along the transverse direction) the light from the cover is distributed asymmetrically and in the cutting plane in the longitudinal direction (C90-C270 plane along the longitudinal direction) the light is distributed symmetrically. This means that the light emitted by the LED circuit board is essentially distributed to one side of the lighting system by means of the cover.
- Figure 8b shows isolines on the floor of the corridor, each corresponding to a certain luminosity in lux.
- the straight line corresponds to the position of the lighting system on the ceiling.
- the associated values show that it is possible with the cover according to the invention to illuminate the hallway in accordance with standards by only illuminating the wall.
- the mean illuminance corresponds to 473 lx and the uniformity of the illuminance is 0.412 (and is therefore in the normal range (> 0.4)).
- Figure 8c also shows isolines on the wall illuminated by the lighting system including the cover.
- the cover according to the invention even with lighting systems flush with the ceiling, the area of the wall adjoining the ceiling is still directly illuminated by the reflectors.
- the average illuminance on the wall is 458 lx and the uniformity is also within the normal range at 0.453.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Die Erfindung betrifft eine Abdeckung zur asymmetrischen Lichtabgabe eines linearen Beleuchtungssystems umfassend ein Profil (9) mit einem ersten und einem zweiten länglichen Reflektor (4,5) an gegenüberliegenden Längsseiten eines primär lichtdurchlässigen länglichen mittleren Abschnitts (3), wobei die Tangentialebene in jedem Punkt des ersten Reflektors (4) auf die dem ersten Reflektor (4) zugewandten Seite einer Strahlungsebene (10) eines Leuchtmittels (1) des Beleuchtungssystems aus gesehen spitzwinklig geneigt ist und wobei die Tangentialebene in jedem Punkt des zweiten Reflektors (5) auf die dem zweiten Reflektor (5) zugewandten Seite der Strahlungsebene (10) vom Leuchtmittel (1) aus gesehen stumpfwinklig geneigt ist. Das lineare Beleuchtungssystem, insbesondere ein Wallwasher, umfasst die erfindungsgemäße Abdeckung, ein Leuchtengehäuse (8), einen Leuchtmittelträger (7) und ein Leuchtmittel (1), vorzugsweise eine lineare LED-Platine, wobei die Abdeckung am unteren Ende des Leuchtengehäuses (8) an das Leuchtmittel (1) anschließend anbringbar ist.The invention relates to a cover for asymmetrical light output of a linear lighting system comprising a profile (9) with a first and a second elongated reflector (4,5) on opposite longitudinal sides of a primarily translucent elongated central section (3), the tangential plane at each point of the first reflector (4) on the side of a radiation plane (10) of a light source (1) of the lighting system facing the first reflector (4) is inclined at an acute angle and the tangential plane at each point of the second reflector (5) on the second reflector (5) facing side of the radiation plane (10) from the lamp (1) is inclined at an obtuse angle. The linear lighting system, in particular a wallwasher, comprises the cover according to the invention, a lamp housing (8), a lamp carrier (7) and a lamp (1), preferably a linear LED board, the cover at the lower end of the lamp housing (8) the lamp (1) can then be attached.
Description
Abdeckung zur Beeinflussung der Lichtabgabe eines linearen Beleuchtungssystems, insbesondere einer deckenbündigen Einbauleuchte, wobei das lineare Beleuchtungssystem ein Leuchtengehäuse, einen Leuchtmittelträger und ein Leuchtmittel umfasst, wobei das lineare Beleuchtungssystem sich entlang einer Längsrichtung erstreckt und das Leuchtmittel eine zur Längsrichtung des linearen Beleuchtungssystem im Wesentlichen senkrecht stehende Strahlungsebene aufweist, wobei die Abdeckung sich in der Längsrichtung erstreckt und mit dem linearen Beleuchtungssystem lösbar verbindbar ist, wobei die Abdeckung das vom Leuchtmittel abgegebene Licht asymmetrisch in einer Querrichtung verteilt.Cover for influencing the light output of a linear lighting system, in particular a built-in lamp flush with the ceiling, the linear lighting system comprising a lamp housing, a lamp carrier and a lamp, the linear lighting system extending along a longitudinal direction and the lamp being essentially perpendicular to the longitudinal direction of the linear lighting system Has radiation plane, the cover extending in the longitudinal direction and being releasably connectable to the linear lighting system, the cover distributing the light emitted by the illuminant asymmetrically in a transverse direction.
Die Lichtabgabe linearer Beleuchtungssysteme kann mittels einer Vielzahl von optischen oder mechanischen Systemen wie beispielsweise Blenden, Linsen, Raster oder Reflektoren beeinflusst werden. Die richtungsabhängige Abgabe des Lichts einer Leuchte und die optimierte Lichtlenkung garantieren einerseits eine bessere Lichtausbeute und andererseits minimieren sie den Energieverlust. Dabei unterscheidet man bei der richtungsabhängigen Abgabe zwischen einer symmetrischen und einer asymmetrischen Abstrahlcharakteristik.The light output of linear lighting systems can be influenced by means of a large number of optical or mechanical systems such as diaphragms, lenses, grids or reflectors. The direction-dependent emission of the light from a luminaire and the optimized light control guarantee, on the one hand, a better light yield and, on the other hand, they minimize energy loss. A distinction is made between a symmetrical and an asymmetrical emission characteristic in the case of direction-dependent emission.
Strahler und Spots besitzen meist einen symmetrischen Lichtkegel, welcher auf senkrecht angestrahlten Flächen als Kreis wahrgenommen wird. Im Gegensatz dazu sollen Fluter oft eine gleichmäßige Beleuchtungsstärke aufweisen, um zum Beispiel Bilder oder Wände einheitlich auszuleuchten. Dies kann mithilfe einer asymmetrischen Abstrahlcharakteristik erreicht werden, indem asymmetrische Reflektoren am Lichtaustritt die Lichtabgabe auf eine Seite vermindern. Zusätzlich kann bei Wallwashern die Lichtabgabe auf den Boden begrenzt werden, indem geeignete Blenden verwendet werden.Spotlights and spots usually have a symmetrical cone of light, which is perceived as a circle on vertically illuminated surfaces. In contrast, floodlights should often have a uniform illuminance, for example to uniformly illuminate pictures or walls. This can be achieved with the help of an asymmetrical radiation characteristic in that asymmetrical reflectors at the light exit reduce the light output to one side. In addition, with wallwashers, the light output on the floor can be limited by using suitable screens.
Ein Wallwasher ist eine Leuchte, welche an oder in der Nähe der Decke eines Raumes angeordnet ist und eine einheitliche Ausleuchtung der schräg unterhalb des Wallwashers befindlichen Wand ermöglicht. In
Weitere aus dem Stand der Technik bekannte Abdeckungen, welche eine asymmetrische Lichtabgabe einer länglichen Lichtquelle ermöglichen, weisen oftmals viele Komponenten auf. Beispielsweise werden für einige Wallwasher LED Platinen als Leuchtmittel eingesetzt und zur Ablenkung der Lichtabgabe pro LED Chip ein Reflektor verwendet. Das heißt der Abstand der LED Chips sowie die verwendeten LEDs spielen in diesem Fall eine große Rolle und können nicht einfach verändert bzw. getauscht werden. Außerdem kann die Abstrahlcharakteristik nicht einfach geändert werden, da dazu jeder einzelne Reflektor getauscht werden müsste.Further covers known from the prior art, which allow an asymmetrical light emission from an elongated light source, often have many components. For example, LED boards are used as illuminants for some wallwashers and a reflector is used for each LED chip to deflect the light output. This means that the distance between the LED chips and the LEDs used play a major role in this case and cannot simply be changed or exchanged. In addition, the radiation characteristics cannot simply be changed, since each individual reflector would have to be replaced.
Bei Einbauleuchten die eine Wallwasher-Charakteristik aufweisen sollen, müssen die eingesetzten Reflektoren zusätzlich meist an der Decke vorstehen. Daher kann eine Einbauleuchte, welche eine Wand ausleuchten soll, nicht samt Abdeckung deckenbündig verbaut werden.In the case of recessed luminaires that are to have wallwasher characteristics, the reflectors used must usually also protrude from the ceiling. Therefore, a recessed luminaire that is supposed to illuminate a wall cannot be installed flush with the ceiling together with the cover.
Aufgabe der vorliegenden Erfindung ist daher die Bereitstellung einer Abdeckung zur Beeinflussung der Lichtabgabe eines linearen Beleuchtungssystems, welche einfach am Leuchtengehäuse angebracht werden kann, ohne das im Leuchtengehäuse befindliche Leuchtmittel zur Erreichung der gewünschten Abstrahlcharakteristik an die Abdeckung anpassen zu müssen. Außerdem soll die Abdeckung auch bei Einbauleuchten eine asymmetrische Lichtverteilung ermöglichen.The object of the present invention is therefore to provide a cover for influencing the light output of a linear lighting system, which can be easily attached to the luminaire housing without having to adapt the lighting means located in the luminaire housing to the cover in order to achieve the desired radiation characteristic. In addition, the cover should enable asymmetrical light distribution even with built-in lights.
Diese Aufgabe wird erfindungsgemäß durch eine Abdeckung zur Beeinflussung der Lichtabgabe eines linearen Beleuchtungssystems, insbesondere einer deckenbündigen Einbauleuchte, gelöst, wobei das lineare Beleuchtungssystem ein Leuchtengehäuse, einen Leuchtmittelträger und ein Leuchtmittel umfasst, wobei das lineare Beleuchtungssystem sich entlang einer Längsrichtung erstreckt und das Leuchtmittel eine zur Längsrichtung des linearen Beleuchtungssystem im Wesentlichen senkrecht stehende Strahlungsebene aufweist, wobei die Abdeckung sich in der Längsrichtung erstreckt und mit dem linearen Beleuchtungssystem lösbar verbindbar ist, wobei die Abdeckung das vom Leuchtmittel abgegebene Licht asymmetrisch in einer Querrichtung verteilt, wobei die Abdeckung ein Profil umfasst, wobei das Profil
- einen primär lichtdurchlässigen mittleren Abschnitt,
- einen ersten Reflektor,
- einen zweiten Reflektor,
- a primarily translucent middle section,
- a first reflector,
- a second reflector,
Diese erfindungsgemäße Anordnung der Reflektoren ermöglicht eine asymmetrische Lichtverteilung des vom Leuchtmittel in der Strahlungsebene abgestrahlten Lichts. Durch die spezielle Neigung der Reflektoren, welche sich gegenüberliegen, in Bezug auf die Strahlungsebene lässt sich das vom Leuchtmittel abgegebene Licht auf eine Seite des Beleuchtungssystems reflektieren. Der lichtdurchlässige mittlere Abschnitt des Profils erlaubt zudem eine Abstrahlung in einen zur Strahlungsebene parallelen Bereich unterhalb des Leuchtmittels.This arrangement of the reflectors according to the invention enables an asymmetrical light distribution of the light emitted by the illuminant in the radiation plane. Due to the special inclination of the reflectors, which are opposite each other, in relation to the radiation plane, the light emitted by the illuminant can be reflected onto one side of the lighting system. The translucent middle section of the profile also allows radiation in an area below the illuminant that is parallel to the radiation plane.
In einer bevorzugten Ausführungsvariante sind der mittlere Abschnitt und der erste und zweite Reflektor des Profils nahtlos miteinander verbunden. Das heißt, die Abschnitte des Profils bilden eine einzelne Komponente und die Abdeckung kann in einem Stück am Leuchtengehäuse angebracht werden. Dies erlaubt auch eine sehr flexible Änderung der Abstrahlcharakteristik, da dafür einfach die gesamte Abdeckung schnell ausgetauscht werden kann.In a preferred embodiment variant, the middle section and the first and second reflector of the profile are seamlessly connected to one another. That is, the sections of the profile form a single component and the cover can be attached to the luminaire housing in one piece. This also allows the radiation characteristics to be changed very flexibly, since the entire cover can simply be exchanged quickly.
Außerdem weist der mittlere Abschnitt eine Fläche auf, welche vorzugsweise nicht parallel zur Strahlungsebene ist, wobei der Neigungswinkel des mittleren Abschnitts zur Strahlungsebene vorzugsweise zwischen 20 und 50° beträgt.In addition, the middle section has a surface which is preferably not parallel to the radiation plane, the angle of inclination of the middle section to the radiation plane preferably being between 20 and 50 °.
Durch die Neigung des leicht diffusen mittleren Abschnittes erhöht sich einerseits die Asymmetrie der Ausstrahlung Richtung Wand und andererseits mindert sich die von der wandabgeneigten Seite aus betrachtete Blendung. Daher ist die Ausrichtung des lichtdurchlässigen mittleren Abschnitts essentiell für die asymmetrische Abstrahlcharakteristik des erfindungsgemäßen Beleuchtungssystems.As a result of the inclination of the slightly diffuse central section, on the one hand, the asymmetry of the radiation towards the wall increases and, on the other hand, the glare viewed from the side facing away from the wall is reduced. The alignment of the translucent central section is therefore essential for the asymmetrical emission characteristic of the lighting system according to the invention.
In einer weiteren Ausführungsvariante weisen der erste und der zweite Reflektor bevorzugt jeweils zwei unterschiedlich gekrümmte Flächen auf, wobei der spitze Winkel zwischen der Tangentialebene in jedem Punkt des ersten Reflektors und der Strahlungsebene vorzugsweise 40 bis 85° beträgt, wobei der stumpfe Winkel zwischen der Tangentialebene in jedem Punkt des zweiten Reflektors und der Strahlungsebene vorzugsweise 110 bis 150° beträgt.In a further embodiment variant, the first and the second reflector preferably each have two differently curved surfaces, the acute angle between the tangential plane at each point of the first reflector and the radiation plane being preferably 40 to 85 °, the obtuse angle between the tangential plane in each point of the second reflector and the radiation plane is preferably 110 to 150 °.
Die zwei unterschiedlichen Kurven jedes Reflektors können je nach gewünschter Abstrahlcharakteristik berechnet werden. Im Wesentlichen sind der erste und zweite Reflektor derart gekrümmt und ausgerichtet, dass das vom Leuchtmittel abgegebene Licht auf eine Seite des Beleuchtungssystems reflektiert wird.The two different curves of each reflector can be calculated depending on the desired radiation characteristics. The first and second reflectors are essentially curved and aligned in such a way that the light emitted by the illuminant is reflected onto one side of the lighting system.
Bevorzugt ist der mittlere Abschnitt im Profil so angeordnet, dass er im Wesentlichen normal auf den ersten und zweiten Reflektor steht. Sofern der mittlere Abschnitt eine ebene Fläche aufweist, ist jeweils eine Seite der Fläche in Längsrichtung mit dem ersten Reflektor und die andere Seite der Fläche in Längsrichtung mit dem zweiten Reflektor verbunden.The middle section is preferably arranged in the profile in such a way that it is essentially normal to the first and second reflectors. If the middle section has a flat surface, one side of the surface is connected in the longitudinal direction to the first reflector and the other side of the surface is connected in the longitudinal direction to the second reflector.
In einer erfindungsgemäßen Ausführung der Abdeckung umfasst das Profil einen ersten bzw. zweiten opaken Abschnitt. Der erste opake Abschnitt erstreckt sich an einer Seite des Profils in Längsrichtung und der zweite opake Abschnitt erstreckt sich an der anderen Seite des Profils in der Längsrichtung. Dabei ist der erste opake Abschnitt nahtlos mit dem ersten Reflektor und der zweite opake Abschnitt nahtlos mit dem zweiten Reflektor verbunden.In an embodiment of the cover according to the invention, the profile comprises a first or second opaque section. The first opaque portion extends on one side of the profile in the longitudinal direction and the second opaque portion extends on the other side of the profile in the longitudinal direction. The first opaque section is seamlessly connected to the first reflector and the second opaque section is seamlessly connected to the second reflector.
Bevorzugt ist dabei der erste und der zweite opake Abschnitt derart ausgebildet, dass das Profil mit dem linearen Beleuchtungssystem lösbar verbindbar ist. Beispielsweise kann jeder der opaken Abschnitte ein Klickprofil aufweisen, welches am Leuchtengehäuse einklickbar ist. Dies ermöglicht ein schnelles Anbringen und Abnehmen der Abdeckung an bzw. vom Beleuchtungssystem, ohne dass dafür ein spezielles Werkzeug nötig ist.The first and the second opaque section are preferably designed in such a way that the profile can be detachably connected to the linear lighting system. For example, each of the opaque sections can have a click profile that can be clicked into the luminaire housing. This enables the cover to be attached and removed quickly to and from the lighting system without the need for a special tool.
Des Weiteren kann die Herstellung des Profils mittels Co-extrusion, beispielsweise Triextrusion, erfolgen, wobei das Profil vorzugsweise im Wesentlichen aus Polycarbonat besteht. Ein Extrusionsverfahren ermöglicht das nahtlose Verbinden der Abschnitte des Profils, welche somit zu einem einzigen Teil verschmelzen. Außerdem können die speziellen Krümmungen des ersten und zweiten Reflektors in einer Tri- bzw. Co-Extrusion sehr präzise geformt werden.Furthermore, the profile can be produced by means of co-extrusion, for example tri-extrusion, the profile preferably consisting essentially of polycarbonate. An extrusion process enables the sections of the profile to be seamlessly connected, which thus merge into a single part. In addition, the special curvatures of the first and second reflector can be shaped very precisely in a tri-extrusion or co-extrusion.
Ein weiterer Aspekt der Erfindung betrifft ein lineares Beleuchtungssystem, insbesondere einen Wallwasher, mit einer erfindungsgemäßen Abdeckung, umfassend ein Leuchtengehäuse, einen Leuchtmittelträger und ein Leuchtmittel, vorzugsweise eine lineare LED-Platine, wobei die Abdeckung am unteren Ende des Leuchtengehäuses im Wesentlichen an das Leuchtmittel anschließend anbringbar ist.Another aspect of the invention relates to a linear lighting system, in particular a wallwasher, with a cover according to the invention, comprising a lamp housing, a lamp carrier and a lamp, preferably a linear LED board, the cover at the lower end of the lamp housing essentially adjoining the lamp is attachable.
Die Abdeckung kann dabei wie oben beschrieben beispielsweise in das Leuchtengehäuse eingeklickt werden. Dadurch kann zuerst das Leuchtengehäuse an einer Decke/Wand angebracht werden und der Leuchtmittelträger und das Leuchtmittel können entweder schon vor der Montage des Leuchtengehäuses in diesem befestigt werden oder danach. Die Abdeckung kann nach der Montage sehr einfach und schnell am Beleuchtungssystem angebracht werden.The cover can be clicked into the lamp housing, for example, as described above. As a result, the lamp housing can first be attached to a ceiling / wall and the lamp holder and the lamp can either be fastened in the lamp housing before it is installed or afterwards. The cover can be attached to the lighting system very easily and quickly after installation.
Sofern das Beleuchtungssystem an einer Decke angebracht ist, erlaubt die am Leuchtengehäuse angebrachte erfindungsgemäße Abdeckung die folgende Lichtabstrahlcharakteristik. Der mittlere Abschnitt lässt Licht, das direkt vom Leuchtmittel abgestrahlt wird, einerseits auf eine parallel zur Strahlungsebene angeordnete Fläche unterhalb des Leuchtengehäuses und andererseits zum ersten und zweiten Reflektor durch, von wo das Licht auf einer Seite des Beleuchtungssystems auf eine vertikale Fläche reflektiert wird, wobei im Wesentlichen der gesamte vertikale Bereich auf dieser Seite des Beleuchtungssystems ausgeleuchtet wird. Außerdem reflektiert zumindest einer der Reflektoren Licht, das direkt vom Leuchtmittel kommt, auf den mittleren Abschnitt, welches von dort wiederum auf eine parallel zur Strahlungsebene angeordnete Fläche unterhalb des Leuchtengehäuses abgegeben wird.If the lighting system is attached to a ceiling, the cover according to the invention attached to the luminaire housing allows the following light emission characteristics. The middle section lets light that is emitted directly from the lamp through on the one hand to a surface arranged parallel to the radiation plane below the lamp housing and on the other hand to the first and second reflector, from where the light is reflected on one side of the lighting system onto a vertical surface, whereby essentially the entire vertical area is illuminated on this side of the lighting system. In addition, at least one of the reflectors reflects light that comes directly from the lamp onto the middle section, which is in turn emitted from there onto an area below the lamp housing which is arranged parallel to the radiation plane.
Die oben beschriebene Abstrahlcharakteristik entspricht einer asymmetrischen Lichtverteilung in der Querrichtung des linearen Beleuchtungssystems. Anders ausgedrückt wird mit der erfindungsgemäßen Abdeckung eine Wand seitlich des an der Decke montiertem Beleuchtungssystems direkt beleuchtet, während der Rest vom Raum, in dem sich das Beleuchtungssystem befindet, indirekt ausgeleuchtet wird. Wie in einem Beispiel weiter unten gezeigt, ist es dennoch möglich, mit einer solchen Leuchte einen Raum normgerecht auszuleuchten. Außerdem wird eine sich im Raum befindliche Person durch das Beleuchtungssystem in keinem Fall geblendet, da die Beleuchtung am Boden indirekt erfolgt. Die Ausrichtung bezüglich der Strahlungsebene und die spezielle Krümmung der Reflektoren ermöglichen zudem eine Beleuchtung der gesamten angestrahlten Wand seitlich des Beleuchtungssystems. Genauer gesagt, wird das vom Leuchtmittel abgestrahlte Licht von den Reflektoren bis zur Lichtaustrittsebene der Abdeckung abgelenkt, das heißt, auch der obere Bereich der Wand wird vollkommen ausgeleuchtet.The radiation characteristic described above corresponds to an asymmetrical light distribution in the transverse direction of the linear lighting system. In other words, the Cover according to the invention directly illuminates a wall to the side of the lighting system mounted on the ceiling, while the rest of the room in which the lighting system is located is illuminated indirectly. As shown in an example below, it is still possible to illuminate a room in accordance with standards with such a luminaire. In addition, a person in the room is in no way blinded by the lighting system, since the lighting on the floor is indirect. The alignment with respect to the radiation plane and the special curvature of the reflectors also enable the entire illuminated wall to be illuminated at the side of the lighting system. More precisely, the light emitted by the illuminant is deflected by the reflectors up to the light exit plane of the cover, that is, the upper area of the wall is also completely illuminated.
Eine weitere Ausführungsform des Beleuchtungssystems umfasst eine plankonvexe, vorzugsweise hochtransparente Linse, wobei die Linse zwischen Leuchtmittel und Profil im Leuchtengehäuse fixiert ist, wobei die plane Seite der Linse dem Leuchtmittel zugewandt ist. Die plane Seite ist bevorzugt parallel zur Strahlungsebene des Leuchtmittels.Another embodiment of the lighting system comprises a plano-convex, preferably highly transparent lens, the lens being fixed between the illuminant and the profile in the luminaire housing, the planar side of the lens facing the illuminant. The flat side is preferably parallel to the radiation plane of the illuminant.
Die Linse ermöglicht eine effizientere Lichtabgabe, da sie das vom Leuchtmittel abgestrahlte Licht fokussierter auf die darunter befindliche Abdeckung abgibt. Das heißt die Linse entspricht im Wesentlichen einer Sammellinse.The lens enables more efficient light emission, as it emits the light emitted by the lamp in a more focused manner onto the cover located below. This means that the lens essentially corresponds to a converging lens.
Bei dem linearen Beleuchtungssystem kann es sich um eine an der Decke angebrachte Einbauleuchte handeln. Ein großer Vorteil der erfindungsgemäßen Abdeckung ist, dass diese bei Einbauleuchten deckenbündig am Leuchtengehäuse anbringbar ist. Dadurch wird unabhängig von der Abstrahlcharakteristik das Erscheinungsbild des Beleuchtungssystems nicht verändert.The linear lighting system can be a recessed luminaire attached to the ceiling. A great advantage of the cover according to the invention is that, in the case of built-in lights, it can be attached to the light housing flush with the ceiling. As a result, the appearance of the lighting system is not changed, regardless of the radiation characteristics.
Ein weiterer Vorteil der erfindungsgemäßen Abdeckung ist, dass diese an ein und demselben Beleuchtungssystem auf zwei verschiedene Arten angebracht werden kann. Genauer gesagt, kann die Abdeckung um 180° in Längsrichtung verdreht am Leuchtengehäuse angebracht werden. Dadurch wird das das vom Leuchtmittel abgestrahlte Licht auf die zuvor nicht ausgeleuchtete Seite des linearen Beleuchtungssystems reflektiert. Somit kann erst nach der Montage des Beleuchtungssystems entschieden werden, ob in Bezug auf die Längsrichtung nach rechts oder links abgestrahlt werden soll.Another advantage of the cover according to the invention is that it can be attached to one and the same lighting system in two different ways. More precisely, the cover can be attached to the luminaire housing rotated by 180 ° in the longitudinal direction. As a result, the light emitted by the illuminant is reflected onto the side of the linear lighting system that was not previously illuminated. Thus, it is only after the installation of the lighting system that a decision can be made as to whether it should be emitted to the right or left in relation to the longitudinal direction.
Eine weitere Ausführungsform der Abdeckung weist einen ersten und zweiten opaken Abschnitt auf, welche eine ebene Fläche umfassen, die parallel zur Decke ist und direkt an diese angrenzt. Bei Einbauleuchten bilden diese ebenen Flächen daher eine direkte Verlängerung der Decke. Diese ebenen Flächen sind insbesondere bei Wallwashern wichtig, da die opaken Abschnitte lichtundurchlässig sind und somit an diesen Stellen kein Licht Richtung Boden durchgelassen wird. Je nach Größe dieser lichtundurchlässigen Flächen kann auch nur eine Wand seitlich des Beleuchtungssystems bzw. auch nur ein Teil dieser Wand beleuchtet werden.Another embodiment of the cover has a first and second opaque section which comprise a flat surface that is parallel to the ceiling and directly adjoins it. In the case of recessed luminaires, these flat surfaces therefore form a direct extension of the ceiling. These flat surfaces are particularly important for wallwashers, since the opaque sections are impermeable to light and therefore no light is allowed to pass through to the floor at these points. Depending on the size of these opaque areas, only one wall to the side of the lighting system or only part of this wall can be illuminated.
Weitere Vorteile und Details der Erfindung werden nachfolgend anhand der folgenden Figuren und Figurenbeschreibungen erläutert.Further advantages and details of the invention are explained below with reference to the following figures and description of figures.
Es zeigt:
-
Fig. 1 den Querschnitt einer erfindungsgemäßen Abdeckung in Form eines Dreifachextrudierten Profils. -
Fig. 2 den Querschnitt einer erfindungsgemäßen Abdeckung mit darüber angeordnetem Leuchtmittelträger samt Leuchtmittel und plankonvexer Linse. -
Fig. 3 den Querschnitt einer erfindungsgemäßen Abdeckung mit darüber angeordnetem Leuchtmittelträger samt Leuchtmittel und Strahlungsebene, sowie die Ausrichtung der Tangentialebenen der Reflektoren zur Strahlungsebene. -
Fig. 4 die erfindungsgemäße Abdeckung mit darüber angeordnetem Leuchtmittel und dessen Lichtanteil, der im oberen Bereich eines Reflektors gefangen und auf den lichtdurchlässigen Abschnitt reflektiert wird. -
Fig. 5 die erfindungsgemäße Abdeckung mit darüber angeordnetem Leuchtmittel und dessen Lichtanteil, der durch lichtdurchlässigen Abschnitt auf den unteren Bereich eines Reflektors trifft und von dort in einem steilen Winkel reflektiert wird. -
Fig. 6 die erfindungsgemäße Abdeckung mit darüber angeordnetem Leuchtmittel und dessen Lichtanteil, der durch den lichtdurchlässigen Abschnitt auf einen Reflektor trifft und von dort in einem flachen Winkel reflektiert wird. -
Fig. 7 die erfindungsgemäße Abdeckung mit darüber angeordnetem Leuchtmittel und dem gesamten Lichtverlauf. -
Fig. 8 die erfindungsgemäße Abdeckung mit darüber angeordnetem Leuchtmittelträger und Leuchtmittel in einem Leuchtengehäuse, welches in einer Decke/Wand einbaubar ist. -
Fig. 9a-9c eine beispielhafte Lichtverteilungskurve eines an der Decke eines Flurs montiertem Beleuchtungssystem samt erfindungsgemäßer Abdeckung und die dazugehörigen Isolinien am Boden und der beleuchteten Wand des Flurs.
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Fig. 1 the cross-section of a cover according to the invention in the form of a triple-extruded profile. -
Fig. 2 the cross section of a cover according to the invention with a lamp carrier arranged above it, including a lamp and a plano-convex lens. -
Fig. 3 the cross section of a cover according to the invention with a lamp carrier arranged above it, including the lamp and radiation plane, as well as the alignment of the tangential planes of the reflectors to the radiation plane. -
Fig. 4 the cover according to the invention with lighting means arranged above it and its light component, which is caught in the upper region of a reflector and reflected onto the translucent section. -
Fig. 5 the cover according to the invention with a lighting means arranged above it and its light component, which hits the lower area of a reflector through the translucent section and is reflected from there at a steep angle. -
Fig. 6 the cover according to the invention with a light source arranged above it and its light component which hits a reflector through the transparent section and is reflected from there at a flat angle. -
Fig. 7 the cover according to the invention with lighting means arranged above it and the entire course of light. -
Fig. 8 the cover according to the invention with a lamp carrier and lamp arranged above it in a lamp housing which can be installed in a ceiling / wall. -
Figures 9a-9c an exemplary light distribution curve of a lighting system mounted on the ceiling of a hallway including the cover according to the invention and the associated isolines on the floor and the illuminated wall of the hallway.
In
Der mittlere Abschnitt und die beiden Reflektoren 3, 4, 5 des Profils 9 sind dabei nahtlos miteinander verbunden.The middle section and the two
Wie in
Wie in
Der erste und der zweite Reflektor 4, 5 umfassen jeweils zwei unterschiedlich gekrümmte Flächen. Der spitze Winkel α zwischen der Tangentialebene in jedem Punkt des ersten Reflektors 4 und der Strahlungsebene 10 beträgt vorzugsweise 40 bis 85°. Der stumpfe Winkel β zwischen der Tangentialebene in jedem Punkt des zweiten Reflektors 5 und der Strahlungsebene 10 beträgt vorzugsweise 110 bis 150°.The first and the
In
Eine nahtlose Verbindung wird erreicht, indem das Profil 9 in einem Tri- bzw. Co-Extrusionsverfahren hergestellt wird. Bevorzugt besteht das Profil 9 aus Polycarbonat.A seamless connection is achieved in that the
In Bezug auf den lichtdurchlässigen mittleren Abschnitt 3 sind der erste und zweite Reflektor 4, 5 derart angeordnet, dass der mittlere Abschnitt 3 im Wesentlichen normal auf jeden der beiden Reflektoren 4, 5 steht.With respect to the translucent
Der erste und zweite opake Abschnitt 6, 6' kann jeweils an dem Ende, welches nicht mit dem ersten und zweiten Reflektor 4, 5 verbunden ist, derart ausgebildet sein, dass die Abdeckung mit einem linearen Beleuchtungssystem lösbar verbindbar ist. In
Wie in
In
In
In
Die vorliegende Erfindung offenbart außerdem ein lineares Beleuchtungssystem, insbesondere einen Wallwasher, wie in
Wie oben beschrieben kann zwischen Leuchtmittel 1 und Profil 9 eine plankonvexe, vorzugsweise hochtransparente Linse 2a am Leuchtengehäuse 8 fixiert werden. Dabei ist die plane Seite der Linse 2a dem Leuchtmittel 1 zugewandt. Eine solche Linse 2a kann die Effizienz des Leuchtmittels 1 erhöhen.As described above, a plano-convex, preferably highly
Statt der Linse 2a kann auch eine hochtransparente Platte zwischen Abdeckung und Leuchtmittel 1 positioniert werden, um einen ausreichenden SELV Schutz zu bieten.Instead of the
Bevorzugt handelt es sich bei dem linearen Beleuchtungssystem um eine an der Decke angebrachte Einbauleuchte. Ein großer Vorteil der erfindungsgemäßen Abdeckung ist, dass diese ebenfalls deckenbündig am Leuchtengehäuse 8 anbringbar ist. Das heißt, das vom Leuchtmittel 1 in der Einbauleuchte abgegebene Licht kann mithilfe des Profils 9, welches deckenbündig angebracht ist, auf einer Seite der Abdeckung bis zur Lichtaustrittsebene der Abdeckung abgelenkt werden. Diese Ablenkung wird durch die spezielle Krümmung des ersten und zweiten Reflektors 4, 5 sowie deren Neigung zur Strahlungsebene 10 erreicht. Daher kann auch ohne das Leuchtmittel 1, vorzugsweise eine LED Platine, zu neigen bzw. abzuändern die Abstrahlcharakteristik eines Wallwashers erreicht werden. Beispielsweise wird die gesamte Wand, welche sich seitlich einer an der Decke angebrachten Einbauleuchte befindet, bis zur Decke hinauf, das heißt bis zur Lichtaustrittsebene der Abdeckung, ausgeleuchtet.The linear lighting system is preferably a built-in lamp attached to the ceiling. A great advantage of the cover according to the invention is that it can also be attached to the
Der erste und zweite opake Abschnitt 6, 6' des erfindungsgemäßen Profils 9 dient einerseits der Lichtabschirmung und andererseits der Fixierung der Abdeckung am Leuchtengehäuse 8. Mithilfe der speziell geformten Enden der opaken Abschnitte 6, 6' lässt sich die Abdeckung einfach am Leuchtengehäuse 8 einklicken. Außerdem kann der erste und/oder der zweite opake Abschnitt 6, 6' zumindest eine ebene Fläche aufweisen, welche parallel zur Decke ist und direkt an diese angrenzt. Diese lichtundurchlässige Fläche ist vor allem für die Abstrahlcharakteristik eines Wallwashers wichtig, da an dieser Stelle kein Licht auf den Boden durchgelassen wird. So kann je nach Größe der lichtundurchlässigen Flächen nur die Wand seitlich der Abdeckung bzw. auch nur ein Teil der Wand ausgeleuchtet werden.The first and second
Ein weiterer Vorteil der erfindungsgemäßen Abdeckung ist, dass durch die komplett symmetrische Ausführung der Ränder des ersten und zweiten opaken Abschnitts 6, 6' das Profil 9 auf zwei Arten in das Leuchtengehäuse 8 einklickbar ist. Genauer gesagt, kann das Profil 9 einfach in Längsrichtung um 180° gedreht werden und so wiederum am Leuchtengehäuse 8 fixiert werden. Durch diese Verdrehung wird die zuvor nicht ausgeleuchtete vertikale Fläche auf einer Seiter des linearen Beleuchtungssystems ausgeleuchtet, während die zuvor ausgeleuchtete Seite nicht mehr ausgeleuchtet wird. Anders ausgedrückt kann mit der erfindungsgemäßen Abdeckung die asymmetrische Abstrahlrichtung einer Leuchte einfach geändert werden, ohne die Position des Leuchtmittels 1 selbst zu ändern. Das heißt in
So kann auch dasselbe lineare Beleuchtungssystem verwendet werden, um einmal die Innenwände eines Raumes auszuleuchten und einmal die Außenwände eines Raumes auszuleuchten.The same linear lighting system can also be used to illuminate the interior walls of a room once and the exterior walls of a room once.
Die erfindungsgemäße Abdeckung kann auch sehr einfach an ein dem Wandverlauf folgendes lineares Beleuchtungssystem angepasst werden. Das Beleuchtungssystem kann beispielsweise bei einem Wand-Wand oder einem Decken-Wand Übergang um 90° gebogen sein. Das erfindungsgemäße Profil 9 kann an einem Ende auf Gehrung geschnitten werden, um in das Leuchtengehäuse 8 eingeklickt werden zu können.The cover according to the invention can also be adapted very easily to a linear lighting system following the course of the wall. The lighting system can be bent by 90 ° for a wall-to-wall or a ceiling-to-wall transition, for example. The
Außerdem kann mit der erfindungsgemäßen Abdeckung in Verbindung mit dem linearen Beleuchtungssystem ein gesamter Raum normgerecht ausgeleuchtet werden. Für einen Betrachter, der in Raumtiefe steht, ermöglicht das Profil 9 eine gute Ausblendung und der erste und zweite Reflektor 4, 5 erlauben eine indirekte Beleuchtung des Raumes, welche für den in Raumtiefe stehenden Betrachter angenehm und blendfrei ist.In addition, with the cover according to the invention in connection with the linear lighting system, an entire room can be illuminated in accordance with standards. For a viewer standing in the depth of the room, the
In
Claims (14)
aufweist, wobei der erste Reflektor (4) an einer Seite des mittleren Abschnitts (3) angeordnet ist, wobei der zweite Reflektor (5) an der anderen Seite des mittleren Abschnitts (3) angeordnet ist, wobei sich der mittlere Abschnitt und die Reflektoren (3, 4, 5) in der Längsrichtung des Profils (9) erstrecken,
wobei die Tangentialebene in jedem Punkt des ersten Reflektors (4) auf die dem ersten Reflektor (4) zugewandten Seite der Strahlungsebene (10) vom Leuchtmittel (1) aus gesehen spitzwinklig geneigt ist,
wobei die Tangentialebene in jedem Punkt des zweiten Reflektors (5) auf die dem zweiten Reflektor (5) zugewandten Seite der Strahlungsebene (10) vom Leuchtmittel (1) aus gesehen stumpfwinklig geneigt ist.
wherein the first reflector (4) is arranged on one side of the middle section (3), wherein the second reflector (5) is arranged on the other side of the middle section (3), wherein the middle section and the reflectors ( 3, 4, 5) extend in the longitudinal direction of the profile (9),
wherein the tangential plane at each point of the first reflector (4) on the side of the radiation plane (10) facing the first reflector (4) is inclined at an acute angle, as seen from the illuminant (1),
wherein the tangential plane at each point of the second reflector (5) on the side of the radiation plane (10) facing the second reflector (5) is inclined at an obtuse angle as seen from the illuminant (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP19199381.5A EP3798506A1 (en) | 2019-09-24 | 2019-09-24 | Light cover for a linear lighting system |
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EP19199381.5A EP3798506A1 (en) | 2019-09-24 | 2019-09-24 | Light cover for a linear lighting system |
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EP3798506A1 true EP3798506A1 (en) | 2021-03-31 |
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EP19199381.5A Withdrawn EP3798506A1 (en) | 2019-09-24 | 2019-09-24 | Light cover for a linear lighting system |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202005011747U1 (en) * | 2005-07-22 | 2006-11-30 | Erco Leuchten Gmbh | Light especially for fastening to building or surface has at least first side wall and opposite lying second side wall provided in each case with at least one section orientated along plane upon which are arranged several LEDs |
US20080204888A1 (en) * | 2007-02-16 | 2008-08-28 | Peter Kan | Optical system for luminaire |
US8038321B1 (en) * | 2008-05-06 | 2011-10-18 | Koninklijke Philips Electronics N.V. | Color mixing luminaire |
EP3112747A1 (en) | 2015-07-02 | 2017-01-04 | Zumtobel Lighting GmbH | Optical element for influencing the light emitted by an extended illumination source |
-
2019
- 2019-09-24 EP EP19199381.5A patent/EP3798506A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202005011747U1 (en) * | 2005-07-22 | 2006-11-30 | Erco Leuchten Gmbh | Light especially for fastening to building or surface has at least first side wall and opposite lying second side wall provided in each case with at least one section orientated along plane upon which are arranged several LEDs |
US20080204888A1 (en) * | 2007-02-16 | 2008-08-28 | Peter Kan | Optical system for luminaire |
US8038321B1 (en) * | 2008-05-06 | 2011-10-18 | Koninklijke Philips Electronics N.V. | Color mixing luminaire |
EP3112747A1 (en) | 2015-07-02 | 2017-01-04 | Zumtobel Lighting GmbH | Optical element for influencing the light emitted by an extended illumination source |
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