EP3276251A1 - Éclairage ayant une forme extérieure modifiable - Google Patents

Éclairage ayant une forme extérieure modifiable Download PDF

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Publication number
EP3276251A1
EP3276251A1 EP17182910.4A EP17182910A EP3276251A1 EP 3276251 A1 EP3276251 A1 EP 3276251A1 EP 17182910 A EP17182910 A EP 17182910A EP 3276251 A1 EP3276251 A1 EP 3276251A1
Authority
EP
European Patent Office
Prior art keywords
light
framework structure
luminaire according
luminaire
cover
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.)
Granted
Application number
EP17182910.4A
Other languages
German (de)
English (en)
Other versions
EP3276251B1 (fr
Inventor
Sascha Skergeth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
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
Application filed by Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP3276251A1 publication Critical patent/EP3276251A1/fr
Application granted granted Critical
Publication of EP3276251B1 publication Critical patent/EP3276251B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/14—Covers for frames; Frameless shades
    • F21V1/16—Covers for frames; Frameless shades characterised by the material
    • 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
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/14—Covers for frames; Frameless shades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • F21S8/061—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension with a non-rigid pendant, i.e. a cable, wire or chain
    • 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
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/02—Frames
    • F21V1/06—Frames foldable or collapsible
    • 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
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/02—Frames
    • F21V1/08—Frames adjustable
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F21V15/012—Housings with variable shape or dimensions, e.g. by means of elastically deformable materials or by movement of parts forming telescopic extensions of the housing body
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/20—Combination of light sources of different form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a lamp whose outer shape is changeable.
  • the adjustability is limited to the fact that, for example, a means for emitting light is articulated to a carrier or the like, in which case the lighting means can be adjusted accordingly with regard to their position.
  • a pivoting of a radiator or a lamp head with respect to a support structure or the like can be made.
  • the possibility of affecting the overall shape of a luminaire as a whole does not exist in such solutions.
  • a closed luminaire housing whose shape is usually not influenced.
  • the present invention is therefore based on the task to provide a novel lamp available whose outer shape can be at least partially influenced.
  • the lamp according to the invention is characterized in that it has a framework structure which is at least partially covered with a flexible material which forms a cover of the lamp.
  • This flexible material is fixed at its edge region to the framework structure, wherein furthermore at least one shaping element is arranged on the framework structure, which is adjustable, and wherein the covering material is also fixed to this shaping element.
  • a luminaire with a framework structure and a lighting unit held by the framework structure wherein at least a portion of the cover of the luminaire is formed by a covering, which is formed from a material and fixed at its edge region to the framework structure at least one shaping element is arranged on the framework structure, on which the covering material is also fixed, and wherein the shaping element is adjustable.
  • the inventively designed area of the lamp cover is formed by a flexible material, the cover in this area can adapt to the position of the shaping element.
  • the housing takes on a corresponding outer shape depending on the arrangement and / or orientation of the shaping element, wherein the possibility exists to influence by appropriate adjustment of the shaping element, the exterior of the lamp also subsequently.
  • basically a closed appearance of a lamp can be achieved, so that a very interesting and visually appealing form for the lamp is obtained.
  • the shaping part projects beyond a defined by the framework structure level to both sides, wherein the framework structure is then covered on both sides with the flexible material and the material is fixed in each case to the projecting portions of the shaping element.
  • the covering material is at least partially permeable to light, the luminaire then having lighting means for emitting light via the covering material.
  • the changeable in terms of shape outer shell of the lamp can also be used for a flat, preferably diffuse light output at the same time.
  • the framework structure has a plate-shaped light guide, which is designed to emit light via at least one flat side and is spanned on this flat side of the flexible material of the cover. Then bulbs are arranged such that light which is emitted by these bulbs, enters the light guide and is discharged through the corresponding flat side.
  • the light guide has an opening or recess in which the lighting unit is arranged, wherein the bulbs are distributed on the periphery of fasteners of the lighting unit and arranged facing an edge surface of the recess of the light guide.
  • the lighting unit optionally has additional means for directional light emission, which have a light exit opening, wherein the cover extends to the edge of this light exit opening.
  • the means for directional light emission comprise a radiator which forms the adjustable shaping element according to the invention. That is, in this particularly preferred embodiment not only a desired intense directional illumination can be achieved, but the adjustable radiator can also be used at the same time to influence the outer shape of the lamp. Despite everything, the light exit opening of the spotlight is harmoniously embedded in the outer shell of the lamp, so that the lamp has a very appealing appearance overall.
  • the radiator according to the invention can in this case be gimballed.
  • the cover used according to the invention preferably consists of a bidirectionally flexible textile material.
  • the framework structure can have an outer frame to which the covering material is fastened, for which purpose, for example, the frame has at least one outwardly facing groove in which the covering material is suspended by means of a piping provided on the covering material.
  • the lamp according to the invention there are a variety of ways to realize the lamp according to the invention. In particular, there are great freedoms in the design of the framework structure as well as the lighting units used. It can also be provided that the lamp also has a plurality of lighting units.
  • FIG. 1 shows a generally provided with the reference numeral 1 luminaire, in which the inventive concept is used.
  • the lamp 1 is designed as a pendant light, since - as can be clearly seen from the following description - the advantages of the invention in a particularly good way come into their own.
  • the present invention in the form of other types of luminaires, for example as recessed or recessed ceiling luminaires or else as floor or table luminaires.
  • the scaffold structure described in more detail below will then possibly be spanned with the cover only on one side.
  • the suspension of the actual lamp body 5 by means of a narrow elongated ceiling mounting housing 3, which is mounted directly on a support member, so for example on the ceiling of a room or the like. On such a ceiling mounting housing 3 could possibly also be dispensed with.
  • the ceiling-mounted housing 3 is also used in the case of the illustrated pendant lamp to accommodate operating equipment for power supply, the suspension of the lamp body 5 then takes place via ropes 4 extending from the two end-side end portions of the ceiling mounting housing 3 down. As will be described in more detail below, these ropes 4 serve not only the mechanical Holder of the lamp body 5 but also the power supply of the arranged in the lamp body 5 units that are responsible for the light output.
  • the peculiarity of the luminaire 1 according to the invention consists in the design or the shape of the lamp body 5 and the way the light is emitted.
  • the shape of the luminaire body 5 is characterized first by the fact that in the present case a rectangular, elongated basic structure is formed by a framework structure described in more detail below, which forms a - here horizontal - central plane E of the lamp body 5.
  • the framework structure On both sides of this plane E, the framework structure is covered by a cover 10, which is fixed on the one hand with its edge region on the frame of the framework structure, but on the other hand spans on both sides over the plane E protruding shaping elements or is fixed thereto. Since the material of the cover 10 is flexible, this follows in a curved manner the predetermined by the framework structure or the frame of the framework structure and by the shaping elements tracks, so that ultimately the recognizable three-dimensional design of the exterior of the lamp body 5 results. It will be explained in more detail in what way this special, visually appealing design of the surface can be achieved.
  • first lighting means are provided, by means of which light can be emitted over a large area and preferably diffusely over the translucent cover 10.
  • the flexible covering material is thus designed to be light-permeable, in which case light sources which are described in more detail below are arranged in the interior of the lamp body 5 enclosed by the two coverings, with the aid of which light is diffused as evenly as possible over the entire cover 10.
  • the diffuse light emission via the cover 10 takes place both towards the underside and to the upper side, since in both cases the identical translucent material is used for the covering.
  • both materials, which are used for covering the underside and covering the top differ from each other and, for example, light is emitted only in one direction.
  • the material for the realization of the lamp cover 10 is completely opaque and accordingly no surface light output is provided.
  • the illustrated luminaire 1 moreover has further means, with the aid of which light can be directed and preferably delivered bundled in a certain direction.
  • lighting units which in turn are each attached to the aforementioned framework structure and have a light exit opening for the directed light output.
  • these lighting units are arranged such that a directed light output is provided towards the bottom, which of course would also be conceivable to arrange or orient at least some lighting units such that light is emitted directed towards the top, for example, targeted a specific area to lighten the ceiling.
  • the covering material forming the cover is now designed in such a way that, starting from the frame, that is to say the circumference of the framework structure, it extends to these light exit openings of the lighting units, but does not cover them. That is to say, light exit openings of the illumination units preferably also form light exit openings 11 of the luminaire cover 10 and the covering material does not influence the light output realized by the illumination units, although it would also be conceivable for the covering material to cover the light exit openings of the illumination units in each case and then at least in these areas is designed that it does not or only slightly influenced the directional light output.
  • the lighting units described in more detail below also simultaneously constitute the shaping elements already mentioned above, with the aid of which the three-dimensional design of the surface of the lamp body 5 is achieved.
  • further shaping elements could be provided on the framework structure which do not emit light, but are used specifically to influence the shape of the luminaire body 5 due to the effect already described above by corresponding protrusion with respect to the plane E of the framework structure.
  • the framework structure forms an elongated, rectangular basic form, on which then the further units, in particular the lighting units for the direct light output and possibly additionally or alternatively provided for this purpose shaping elements are fastened without lighting function.
  • the inventive concept is much more versatile feasible and of course, the number of used lighting units for the directional lighting or the number of shaping elements can be chosen freely.
  • the predetermined by the framework structure basic shape of the lamp body 5 does not have to be rectangular or square, but could have any shape. In particular, a polygonal or generally polygonal shape or else an oval or elliptical shape, in particular a circular shape, would be conceivable.
  • the Figures 2 and 3 show in this case first two views of the lamp 1 in a state in which the two covers 10 or clothing described in more detail above were removed.
  • the perspective view of FIG. 3 In this case, the frame-like framework structure 20 can be removed, by which the peripheral shape of the lamp body 5 is determined.
  • a total of six lighting units 50 are used in the illustrated case. As already mentioned, these lighting units 50 serve, in particular, for the direct or directed light output towards the underside, but at the same time they also have further means for generating light, with the aid of which light is emitted in a planar manner via the lamp covers 10.
  • the central element of the framework structure 20 here is a plate-shaped light guide 25 which is surrounded at its edge by frame members 30 which are mitred in the corner regions and are joined together to form a frame 21 surrounding the light guide 25.
  • frame members 30 which are mitred in the corner regions and are joined together to form a frame 21 surrounding the light guide 25.
  • the suspension of the frame structure 20 described later in more detail on the ropes 4.
  • the frame members 30 also serve to hook the stringing material.
  • the plate-shaped light guide 25 should be as light and thin as possible and accordingly has a thickness of only a few millimeters in the present case, its stability, even in cooperation with the frame 21, is rather low.
  • a reinforcement 22 extending centrally in the longitudinal direction at the top side of the light guide 25 is provided. This is at their end areas - as in FIG. 3 recognizable - coupled with the circulating suspension ropes 4. Since the reinforcement 22 is screwed to the light guide plate, this results in an overall sufficiently rigid or stable construction, in which an unwanted bending of the framework structure 20 is prevented despite not insignificant length of the lamp body 5.
  • the Reinforcement 22 also has the advantage that it can be used to accommodate components for powering the lighting units 50.
  • these are responsible for direct or directed illumination towards the underside, but on the other hand they also have means for generating light, via which the surface light output already mentioned above via the luminaire cover 10 takes place. Strictly speaking, these other means for generating light are designed such that they couple light into the light guide 25. Within this light guide 25, the light is then distributed as uniformly as possible by multiple reflections in a known manner, then coupled over the surface of the top and bottom of the light guide 25 and finally emitted via the cover 10. However, as already mentioned, depending on the type of desired light output, it can be provided that light is also emitted only via one of the two flat sides of the light guide plate 25.
  • the coupling out of the light from the optical waveguide plate 25 takes place in a known manner in that its surface (s) is / are provided with special coupling-out structures which redirect incident light in such a way that it is no longer internally totally reflected, but instead via one of the flat sides leave the light guide plate 25.
  • FIGS. 7a to 7e Views of a single illumination unit in the non-mounted on the light guide 25 state are in the FIGS. 7a to 7e shown.
  • the actual light output for the direct illumination is effected by a cylindrical radiator 60, which has a circular light exit opening 62 on the front or underside of its cylindrical housing 61, via which the light is emitted.
  • an LED board 64 arranged within the emitter housing 61 with an associated LED 65 or an LED cluster as the light source, wherein this LED 65 is preceded by a lens 66, with the aid of which the LED light collimates, ie formed into an approximately parallel bundle of rays is, which is then discharged via the light exit opening 62.
  • the lens is an already well-known so-called. TIR lens, which obviously other alternative to the illustrated embodiment of the radiator 60, other optical systems could be used, with the aid of a direct, directed light output can be achieved.
  • Each lighting unit 50 thus has a radiator 60, which - such as the sectional views of the FIGS. 4 to 6 can be removed - such is positioned so that it is arranged approximately centrally in the plane of the light guide plate 25 and thus the plane E of the framework structure 20. That is, the radiator 60 projects beyond the horizontal plane E of the framework structure 20 both to the bottom and to the top.
  • the light guide plate 25 in each case has a circular receiving or mounting opening in which a lighting unit 60 is then mounted.
  • the cylindrical housing 61 of the radiator 60 is gimballed in the illustrated preferred embodiment, so that a free pivoting of the radiator 60 and thus an alignment of the directed light output is made possible.
  • a rigid holder or a holder which only allows pivoting about a single axis, would be conceivable.
  • the attachment of the radiator 60 together with the means for gimbal 70 takes place here via a plurality of annular mounting elements, in particular in the sectional view of FIG. 6 are recognizable.
  • a first, annular angled fastening part 75 is provided, which is designed such that it rests with a lower, horizontal leg 76 on the underside of the light guide plate 25. From this horizontal leg 76 extends on the inner circumference of a second vertical leg 77, which initially has two opposing openings 78, which engage in suspension elements 71 of the gimbal 70.
  • outwardly on the peripheral wall of the vertical land 77 are provided circumferentially evenly distributed LED boards 90 facing outward (see FIGS. 7a and 7c ).
  • an upper mounting ring 80 is provided, which can be connected by means of a plurality of screws 81 with the angled fastening part 75. Further, below the upper mounting ring 80, a further spacer ring 85 is provided, which is positioned between the bottom of the ring 80 and the top of the light guide 25.
  • the assembly of the lighting unit then takes place in that first the angled fastening part 75 with the cardan suspension 70 attached thereto and the radiator 60 is attached from the underside to the mounting opening of the light guide 25.
  • the spacer ring 85 is then placed from the top and ultimately the second mounting ring 80 with the aid of Screws 81 connected to the lower angled mounting part 75.
  • the mounting opening of the light guide 25 and the corresponding mounting hardware for the lighting unit 50 need not force circular but may also assume another shape, for example, a square shape.
  • the LED boards 90 are positioned and aligned such that they face the edge region of the mounting opening of the light guide 25, that is, the inner peripheral surface 26.
  • the light is thus coupled into the mounting area via the edge region of the mounting opening of the light guide 25. It is further advantageous provided that - as again in FIG. 6 recognizable - those areas of the angled fastening part 75 and the spacer ring 85, between which the light guide 25 is clamped, are provided with an annular reflective element 79 and 86, respectively.
  • this is a highly reflective material, by which on the one hand the light coupling is optimized, on the other hand, a mixing of the light and thus a homogenization of the coupling over the entire circumference in the optical fiber 25 is improved.
  • This measure thus contributes in addition to the fact that the planar light guide 25 is illuminated uniformly and ultimately then the light cover 10 appears in a uniform brightness.
  • a uniform light output via the light cover 10 is also optimized by the fact that - as in particular with reference to FIG. 3 recognizable - the lighting units 60 are distributed as evenly distributed in the plane of the light guide plate 25. At the same time, however, this positioning of the lighting units 50 also allows them to be supplied with power in a simple manner, as will be explained in more detail below.
  • the cables 4 then extend above the light guide 25 to the central reinforcement 22 and are here electrically coupled to other lines and units used for the power supply, which lead along the reinforcement to the lighting units 50.
  • the central reinforcement 22 is U-shaped and thereby includes an elongated receiving space for further power supply units for powering the lighting means.
  • These may be small printed circuit boards or electronic components which make the supply voltage supplied via the suspension cables 4 finally into a suitable voltage for the operation of the LEDs 65 of the emitters 60 and the LEDs 91 responsible for the light coupling into the optical fiber 25.
  • an operating device arranged in the ceiling mounting housing 3 first converts the general mains supply voltage into a low-voltage supply voltage, which is supplied to the lamp body 5 via the suspension cables 4.
  • the further electronic components which are positioned in the central reinforcement 22, then the actual power supply of the lighting units 50 takes place.
  • the directional light output can be adjusted independently of the areal and possibly diffuse light output realized via the cover 10.
  • a corresponding additional transmission of control information is required, which may then require the use of additional lines for the signal transmission or for a separate power supply of the corresponding bulbs.
  • the lighting means are adjustable in their intensity and / or color or color temperature.
  • a so-called bidirectionally flexible textile material is preferably used, which is thus stretchable in two mutually perpendicular directions of the material plane.
  • the material can be made transparent, in particular, if a diffuse one is used Whitening of the lamp body 5 is desired.
  • a material which is designed in a special way to give the surface of the lamp body 5 a special appearance there are no general limitations and it would also be conceivable to use a material which is designed in a special way to give the surface of the lamp body 5 a special appearance.
  • a patterned material or even an opaque material could be used for this purpose, wherein for the top of the lamp body 5 and the bottom possibly also different materials with different optical properties could be used.
  • the material is braced on the one hand over its circumference with the framework structure 20, on the other hand extends to the lighting units 50 and is supported by this or is also fixed there, whereby the outer cover 10 of the lamp body 5 ultimately the in FIG. 1 recognizable form.
  • the bracing of the cover material 10 with the frame 30 in this case takes place in that the frame parts - such as in FIG. 8 or FIG. 9 recognizable - are designed such that two outwardly open longitudinal grooves 31 and 32 are formed, which serve to mount the edge region of the fabric material 10. Strictly speaking, the stringing as shown by FIG. 9 at its edge region on a so-called. Keder 12, which is inserted into the outwardly directed groove 32. The clothing material wraps around the outwardly directed lower edge of the frame part 30, so that it is firmly suspended here. Since the covering material 10 is preferably suspended in the frame parts 30 over its entire circumference in the manner described above, it is accordingly under tension, so that it is sufficiently fixed to the frame parts 30 by this measure.
  • a T-shaped aperture 35 is then placed on the frame parts 30, which engages with a central web 36 in a corresponding receiving opening of the frame member 30 and here is jammed. Through this aperture 35, the frame is completed circumferentially, for a support of the clothing material, the aperture 35 is not mandatory.
  • the covering material clamped in this way with the frame 21 then covers the upper side as well as the underside of the framework structure 20, which is formed in particular by the planar light guide 25 and the frame 21 and the reinforcement 22.
  • the covering or cover 10 is also on the lighting units 50, exactly Taken on the front sides or rear sides of the radiator 60 fixed, so that by the over the plane of the light guide plate 25 protruding lighting units 50, a special curved, three-dimensional shape of the cover is achieved.
  • the cover 10 in this case has the light exit opening 62 of the radiator 60 and the circular back of the radiator 60 corresponding recesses or openings.
  • a fastening of the cover 10 on the radiator 60 in the region of the light exit opening 62 takes place here by means of two clamping rings 67 and 68, which engage with each other in such a way that they can be clamped or latched together, but at the same time on the radiator housing 61 are fastened.
  • the edge region of the clothing material is inserted into the inner region of the outer ring 67.
  • the second clamping ring 68 is inserted from the opposite side, so that it locks with the outer ring 67 and clamps the textile material between them.
  • the covering material is fixed in that it in turn has an opening whose size is dimensioned somewhat smaller than the outer circumference of the rear radiator housing 61.
  • This has a removable cover 69 which is fastened to the radiator housing 61 by means of a screw 69a can be fixed.
  • the clothing material is thus positioned so that it rests on the back of the radiator housing 61 at least in the edge region. Subsequently, the back cover 69 is screwed on, so that here too the covering material is fixed to the radiator 60.
  • the covering material is braced, on the one hand, between the surrounding frame 21 and, on the other hand, on the lighting units 50 such that, due to the flexibility of the material, a curved surface configuration of the cover 10 results, which follows the positioning of the lighting units 50.
  • the above-described effect of the design of the surface shape can be further enhanced by the fact that the emitters 60 are adjustable due to the gimbal mentioned, in particular can be aligned in the desired manner to output light in a very specially selected angular range. Due to the flexibility of the clothing material, this can follow an adjustment of the emitters 60, so that in spite of a different alignment of the emitters 60 a basically - apart from the light emission openings 11 - closed luminaire coverage is achieved.
  • the gimbal for the radiator 60 is chosen such that they maintain the set orientation despite the voltage of the cover 10. For this purpose, a certain friction of the gimbal suspension elements is required or appropriate locking means are provided which lock the emitters 60 in the set orientation accordingly.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP17182910.4A 2016-07-26 2017-07-25 Éclairage ayant une forme extérieure modifiable Active EP3276251B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202016104061.2U DE202016104061U1 (de) 2016-07-26 2016-07-26 Leuchte mit veränderbarer Außenform

Publications (2)

Publication Number Publication Date
EP3276251A1 true EP3276251A1 (fr) 2018-01-31
EP3276251B1 EP3276251B1 (fr) 2020-01-01

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EP17182910.4A Active EP3276251B1 (fr) 2016-07-26 2017-07-25 Éclairage ayant une forme extérieure modifiable

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EP (1) EP3276251B1 (fr)
AT (1) AT15730U1 (fr)
DE (1) DE202016104061U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3473916A1 (fr) * 2017-10-23 2019-04-24 Zumtobel Lighting GmbH Luminaire pourvu d'unité d'éclairage ainsi qu'une couverture entourant l'unité d'éclairage
EP3797243A4 (fr) * 2018-06-01 2022-04-06 Contemporary Visions, LLC Système d'éclairage

Citations (4)

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AT15730U1 (de) 2018-05-15

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