EP3408584A1 - Appareil d'éclairage muni d'un élément de recouvrement pyramidal ou conique - Google Patents

Appareil d'éclairage muni d'un élément de recouvrement pyramidal ou conique

Info

Publication number
EP3408584A1
EP3408584A1 EP17703055.8A EP17703055A EP3408584A1 EP 3408584 A1 EP3408584 A1 EP 3408584A1 EP 17703055 A EP17703055 A EP 17703055A EP 3408584 A1 EP3408584 A1 EP 3408584A1
Authority
EP
European Patent Office
Prior art keywords
light
reflector
cover
luminaire according
leds
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
EP17703055.8A
Other languages
German (de)
English (en)
Other versions
EP3408584B1 (fr
Inventor
Tobias Schmidt
Alexander Faller
Stephan Lukanow
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.)
Siteco GmbH
Original Assignee
Osram GmbH
Siteco Beleuchtungstechnik GmbH
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 Osram GmbH, Siteco Beleuchtungstechnik GmbH filed Critical Osram GmbH
Priority to RS20220394A priority Critical patent/RS63153B1/sr
Publication of EP3408584A1 publication Critical patent/EP3408584A1/fr
Application granted granted Critical
Publication of EP3408584B1 publication Critical patent/EP3408584B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/049—Patterns or structured surfaces for diffusing light, e.g. frosted surfaces
    • 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
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • 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
    • 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
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • F21V5/004—Refractors for light sources using microoptical elements for redirecting or diffusing light using microlenses
    • 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
    • F21V5/02—Refractors for light sources of prismatic shape
    • 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
    • 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
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/30—Lighting for domestic or personal use
    • F21W2131/301—Lighting for domestic or personal use for furniture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/12—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/14—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array
    • F21Y2105/16—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array square or rectangular, e.g. for light panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/14—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array
    • F21Y2105/18—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
    • 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
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F21Y2115/15—Organic light-emitting diodes [OLED]

Definitions

  • the present invention relates to a luminaire with a light source comprising at least one LED, a reflector and a transparent cover.
  • Luminaires which contain LEDs (which are also to be understood as OLEDs) as light sources, tend to dazzle a viewer because the light sources are almost punctiform. Further, depending on the location of the lamp, e.g. As office lighting, a light distribution is desired which is weak enough at high emission angles relative to the normal perpendicular to the light exit surface to prevent glare.
  • Such light distributions for glare-free luminaires in the interior are, for example, by special coverage of the
  • Such covers may contain microstructures or textures that cause light scattering to some extent.
  • the covers are also available as relatively thin films.
  • Object of the present invention is to develop a generic lamp to provide a glare-free soft light distribution with a sufficient half width for use as ceiling recessed or surface-mounted or suspended ceiling lights, eg for office lighting.
  • the problem is solved by a luminaire according to claim 1.
  • a special feature of the lamp is that the flat translucent cover with respect to the plane of the lamp
  • the light influenced by the microstructures in the cover is not emitted in the plane of the light exit opening, but is deflected in the direction of the central central axis of the luminaire. This makes it possible to achieve a similar effect as through louvers of a conventional luminaire.
  • the light distribution at high radiation angles, e.g. at angles above 85 °, 80 ° or 65 °, is reduced to improve glare control.
  • the shape of the light directing cover is defined by the sidewall of a pyramid or cone, the base of the pyramid or cone lying in the notional plane defined by the edge of the reflector.
  • the pyramidal or conical shape has the advantage that the angle of inclination of the cover with respect to the fictitious plane, which can be arranged parallel to the ceiling, is always constant.
  • an angle formed in a cross-section perpendicular to the notional plane between the surface of the translucent cover and the notional plane is less than 30 °, preferably less than 20 ° or 15 °.
  • This flat angle is sufficient to achieve the effect that the light output in solid angle ranges above, for example, 85 °, in particular 80 ° or 65 °, reduced or shielded.
  • light is prevented from being deflected to a significant extent to the opposite side of the luminaire as to be opposite to the central axis.
  • side is delivered in a solid angle range above a desired shielding angle.
  • the shape of the cover in combination with the microstructure elements thus ensures that the light is scattered by the microstructures on the one hand, in order to prevent reflected glare, and on the other hand, too high emission angles are avoided in order to prevent direct glare through shielding.
  • the height of the translucent covers, with which it protrudes from the fictitious plane in the reflector be limited to 1/5 or preferably 1/8 of the largest diameter in the fictitious plane. This height to width ratio of the cover ensures that, as previously explained, the light output above a critical angle to the luminaire normal prevented or at least reduced.
  • the microstructures comprise textures on a surface of the cover facing the light source and / or facing away from the light source.
  • the textures may in particular comprise lenticular or prism-shaped elevations and / or depressions.
  • the elevations and / or depressions may be arranged regularly or irregularly.
  • the shape of the textures should help to scatter or dilate the light locally on the cover. The inclination of the cover relative to the light exit opening then improves the preferred shielding for glare reduction.
  • the microstructures may also be formed by scattering particles in the material of the cover and / or on a surface of the cover.
  • the scattering particles have a similar function as the surface textures, ie they produce a light scattering locally. Textures or scattering particles on the inside of the cover have the advantage that they are not damaged when cleaning the cover. On the other hand, textures and scattering particles on the outside have the advantage that when viewed on the cover no reflections on the otherwise flat surface are visible.
  • an additional reflector is provided, which adjoins the peripheral edge on the side facing away from the light source of the cover.
  • the additional reflector can serve as a cut-off reflector, which improves the shielding of the light distribution.
  • the reflector and the additional reflector may also be integrally connected to each other, wherein the peripheral edge of the reflector, as previously mentioned, in this case formed by the edge on which the transparent cover rests against the composite reflector.
  • the reflector and / or the additional reflector can be formed with a high gloss.
  • This embodiment achieves a high luminaire efficiency.
  • the reflector and / or the additional reflector may also be designed to be diffusely reflecting, in particular matt white. These embodiments further reduce the risk of potential glare.
  • the light source may comprise an array of LEDs arranged in a plane at the bottom of the reflector.
  • the distribution of light already at the location of the light source is more favorable, ie better distributed.
  • the LEDs are arranged in groups together, wherein preferably when using multi-colored LEDs each point in the array Group of LEDs with each color covers. This allows mixing different colors.
  • the differently colored LEDs can also be controlled separately from each other to change the light color of the lamp.
  • the LEDs or groups of LEDs are evenly distributed over the bottom of the reflector.
  • the LEDs are arranged along a peripheral edge of the bottom of the reflector.
  • the latter has the advantage that the reflected from the laterally disposed reflector portion of the light is increased compared to a flat arrangement of the LEDs on the ground. This can also contribute to the glare of the lamp.
  • the uniform distribution of the LEDs on the floor has the advantage that the surface of the translucent cover is illuminated uniformly, so that viewed from the outside, the light exit openings of the lamp appears uniformly bright.
  • the smallest distance of each LED or LED group to the nearest neighbor is greater than 10 mm.
  • each LED is associated with a primary lens, for example, to expand the light of each LED or to focus in the direction of the cover.
  • the primary lenses may be in an outer ring and / or one or more primary lenses in the center of the LED array have a different radius of curvature than the primary lenses of the remaining LEDs in the array.
  • different light effects can be generated in the area in which the light from the LEDs is predominantly reflected at the side reflector walls, and the light which strikes predominantly directly on the tip of the inward-facing cover of the luminaire.
  • at least some primary lenses are flattened at their apex.
  • the flattening of the vertices may also be different depending on the position of the primary lens in the LED array.
  • the flats of the lenses in concentric rings of the LED array may each gradually increase or decrease so that the light of each LED in the array produces approximately the same light distribution after passing through the translucent cover.
  • the differently flattened vertices can also be combined with the different curvature radii as previously described.
  • the LEDs have different colors.
  • the combination of cold and warm light sources is therefore ideal for illuminating an interior, eg an office. It is also possible to control the light sources of different colors separately, so that the mixed color of the lamp can be selected by different dimming of the light sources.
  • FIG. 1 shows a cross section through a luminaire.
  • FIG. 2 shows a cross section through a further one
  • FIG. 3 shows a cross section through a further one
  • FIG. 4 shows a perspective view of a cover for one of the luminaires of FIGS. 1 to 3.
  • FIG. 5 shows the cover according to FIG. 4 in a side view.
  • FIG. 6 shows a perspective view of a luminaire.
  • Figure 7 shows a perspective view of a lamp without cover.
  • Figure 8 gt is a perspective view of a far lamp without cover.
  • FIG. 9 shows the luminaire according to FIG. 8 with primary lenses.
  • Figures 10a-d show top views of different LED arrays.
  • Figure 11 shows in polar representation a light distribution curve in a C-plane for a lamp according to Fi gur 7 with a high-gloss reflector.
  • FIG. 12 shows a polar representation of a light distribution curve in a C-plane for a luminaire of FIG. 3 with a matt reflecting reflector.
  • FIG. 13 shows a perspective view of an on
  • FIG. 14 shows a section through the arrangement of primary lenses according to FIG. 13.
  • FIG. 15 shows a plan view of an arrangement of primary lenses according to FIG. 13 on the side facing away from the LEDs with different radii of curvature of the primary lenses.
  • FIG. 16 shows a plan view of the arrangement of primary lenses according to FIG. 13 on the side facing away from the LEDs with differently flattened apices of the primary lenses.
  • FIG. 17 shows a plan view of an arrangement of primary lenses according to FIG. 13 on the side facing the LEDs.
  • the lamp has a base plate 2, which may be formed in particular by a PCB (Printed Circuit Board).
  • a base plate which is just described, is an arrangement tion of several LEDs 4 provided on one side.
  • the LEDs 4 are distributed uniformly over the base plate 2 in this embodiment and are electrically connected to electrical traces on the base plate.
  • a reflector 6 which defines in the illustrated embodiment according to the figure 1 in each horizontal section perpendicular to the image plane of Figure 1 a square.
  • the reflector 6 is formed reflective on the inward-facing side. In particular, it is provided in one embodiment that the reflector walls are matt white.
  • the peripheral edge of the reflector forms a light outlet opening. This is closed with a cover 8.
  • the cover 8 is shown in a perspective view in Figure 4 and in a side elevation in Figure 5 as a single part.
  • the cover 8 is formed of an optically transparent material.
  • the cover 8 has on its surface a
  • microstructures which are formed in particular as a microlenses or micro prisms on a surface of the cover 8.
  • the microstructures may be regularly or irregularly distributed on the cover 8. According to FIG. 4, it can be seen that the microstructures are arranged in a regular pattern.
  • the microstructures of the cover 8 have the effect that the light which passes through the cover 8, is deflected laterally. In particular, the microstructures ensure that the light is partially scattered.
  • a peculiarity of the cover 8 is that it extends in a pyramidal shape inwardly towards the LEDs 4.
  • the inclination angle ⁇ is 10 °.
  • the angle is less than 30 ° or in particular less than 20 °.
  • the flat angle has the effect that the light is not only scattered on the cover 8, but also slightly deflected in the direction of a central axis z of the lamp.
  • a desired light distribution of the luminaire can be produced, which at large emission angles decreases more sharply than the uniformly illuminated flat plate (see FIG. 1) (ie the luminaire has a light distribution in a C-plane, which is narrower) as a Lambert distribution).
  • an improved shielding of the luminaire can thereby be realized.
  • the material of the cover 8 may in particular be a transparent plastic or a glass.
  • the microstructures may be formed in particular as pyramidal optical elements or as lenticular optical elements in the surface of the material as a recess or as a survey.
  • the pyramidal or lenticular depressions, or in general any type of surface texture, which are suitable for causing a light expansion, in particular a light scattering, may be provided on the side facing the illuminant or on the opposite outside of the cover 8.
  • scattering centers may also be provided within the material or on a surface of the material of the cover 8. Scattering centers may e.g.
  • a surface of the cover 8 is formed frosted. It can be a kind of frosted glass formed by a treatment of the surface by etching or sandblasting.
  • FIG. 1 A luminaire according to FIG. 1 in a perspective view is shown in FIG.
  • the luminaire is designed as recessed ceiling or ceiling mounted luminaire.
  • a wide edge extends around the cover 8 in the light exit opening.
  • the luminaire can be integrated in a ceiling or attached to a ceiling.
  • the luminaire may also be spaced from the ceiling, e.g. as a pendant or floor lamp, be mounted.
  • the luminaire is constructed so that it is mounted with the light exit opening down in the direction of an interior to be illuminated.
  • the light distribution produced by the cover 8 is suitable for this type of luminaire mounting.
  • FIG. 2 shows alternative embodiments of the lamp.
  • a further reflector 7 is provided on the side of the cover 8 facing away from the light source.
  • the reflector serves as a cut-off reflector to improve the shielding of the luminaire.
  • the inwardly facing sides of the further reflector 7 are in particular highly polished. It is also possible that the reflectors 6 and 7 are formed integrally with each other and the cover 8 is integrated therein.
  • an arrangement of primary lenses 10 is provided above the LEDs 4.
  • the primary lenses 10 may be integrally connected together, as shown in FIGS. 13 to 17.
  • the primary lenses 10 may, as stated below, have particular shapes to assist in the formation of a desired light distribution in combination with the cover 8.
  • the lamp of the invention without the cover 8 is shown. Therefore, the top view of the array of LEDs 4 is visible.
  • an LED array comprises 4x3 LEDs.
  • An alternative embodiment is shown in FIG. Here, the LEDs are arranged only at the edge of the base 2 within the reflector 8.
  • FIG. 9 shows the luminaire according to FIG. 8, wherein primary LEDs 10 are arranged above the LEDs.
  • Embodiments as in FIG. 7 with a diffusely reflecting reflector generate a light distribution in a C
  • Figure 12 shows a schematic light distribution in a C-plane of a luminaire with a high specular reflector, e.g. is shown in the figure 3d.
  • the light distribution has a local minimum at 0 ° and increases in the direction of the flanks to about ⁇ 15 ° and then decreases relatively quickly in the direction of + 90 °.
  • Figures 10a to 10d show various embodiments of LED arrays which may be combined with the lamps as previously described.
  • the light distributions which are achieved with the previously described LED arrays can be produced in particular with differently colored LEDs.
  • the different colors have different light distributions.
  • the groups of LEDs can be controlled differently so that, as desired, only a warm white or only a cold white light is generated.
  • the light colors can also be controlled separately in this embodiment.
  • the distance from an LED to the right-angled neighbor according to FIG. 10b is, for example, between 10 and 20 mm, in particular about 16 mm.
  • the offset thereto arranged LEDs according to the array of Figure 10a are arranged at half a distance.
  • the spacings of the LEDs in the array are relatively large, so that they would be perceived by the viewer as individual light points under direct supervision. Through the cover 8, however, it is ensured that the individual points of light are no longer visible and an approximately evenly illuminated surface is perceived by the viewer.
  • FIG. 14 shows a section through the arrangement of the primary lenses according to FIG. 13.
  • the individual primary lenses On the side facing the LEDs, the individual primary lenses have an entry surface 14 which is surrounded by a cone 16.
  • the cone has an angle to the optical axis of the LED, so that takes place at the conical surfaces total reflection.
  • the entrance surface 14 in combination with the cone 16 therefore enables an efficient coupling of the light into the primary lens.
  • the primary lenses may have different radii of curvature, as shown in FIG.
  • the primary lenses in a central ring of the primary lens array have a radius Rl.
  • the outer primary lenses have a radius R2 and the central primary lens has a plane Rl.
  • the primary lenses also have flattened vertices 20, 21 or 22 as shown in FIG.
  • the primary lenses 20 at the edge of the array have a flattened apex with a larger diameter D1 than the primary lenses 21 and 22 provided within the array.
  • the primary lenses 21 have a flattened vertex with a diameter D2 and the primary lenses 22 have a flattened vertex with a diameter D3, where Dl>D2> D3.
  • the flattened vertex of the lenses has the effect that the light distribution after the cover 8 from the LED array of Figures 10c and 10d, or a combination of the two, as shown in Figure 10a, respectively, is the same shape.
  • the LEDs in an array according to FIGS. 10c and 10d can each have different colors. Both LED arrays are superimposed to the arrangement of Figure 10a and thus have, after penetrating the cover 8, the same light distribution curve, so that mix both light colors homogeneous.
  • the invention is not limited to the illustrated square arrangement of the LED arrays and the light exit surface of the reflector. limits. It is also possible to apply round symmetries, in particular in connection with, for example, conical translucent covers 8.
  • round symmetries in particular in connection with, for example, conical translucent covers 8.
  • rectangular shapes for the light exit surface or the cover are possible lent. In this case, for example, a flat pyramidal cover with a rectangular base can be used.
  • the covers are made flat, ie that the shorter side, for example, amounts to at least half of a longer side in order to achieve similar optical effects in all directions.

Landscapes

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

Abstract

L'invention concerne un appareil d'éclairage comprenant une source lumineuse se présentant sous la forme d'au moins une DEL, ainsi qu'un réflecteur, ce réflecteur définissant une ouverture de sortie de lumière sur une face opposée à la source lumineuse par l'intermédiaire d'un bord périphérique du réflecteur, un élément de recouvrement transparent plan comportant, de manière répartie, des microstructures dirigeant et/ou dispersant la lumière étant disposé dans l'ouverture de sortie de lumière, cet élément de recouvrement transparent plan s'étendant par rapport à un plan fictif défini par le bord périphérique du réflecteur, vers l'intérieur en direction de la source lumineuse.
EP17703055.8A 2016-01-26 2017-01-25 Appareil d'éclairage muni d'un élément de recouvrement pyramidal ou conique Active EP3408584B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RS20220394A RS63153B1 (sr) 2016-01-26 2017-01-25 Svetiljka sa pokrivačem u obliku piramide ili kupe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016101345.5A DE102016101345A1 (de) 2016-01-26 2016-01-26 Leuchte mit pyramidenförmiger oder kegelförmiger Abdeckung
PCT/EP2017/051557 WO2017129623A1 (fr) 2016-01-26 2017-01-25 Appareil d'éclairage muni d'un élément de recouvrement pyramidal ou conique

Publications (2)

Publication Number Publication Date
EP3408584A1 true EP3408584A1 (fr) 2018-12-05
EP3408584B1 EP3408584B1 (fr) 2022-04-06

Family

ID=57963178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17703055.8A Active EP3408584B1 (fr) 2016-01-26 2017-01-25 Appareil d'éclairage muni d'un élément de recouvrement pyramidal ou conique

Country Status (5)

Country Link
US (1) US10808911B2 (fr)
EP (1) EP3408584B1 (fr)
DE (1) DE102016101345A1 (fr)
RS (1) RS63153B1 (fr)
WO (1) WO2017129623A1 (fr)

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DE102016104223A1 (de) 2016-01-26 2017-07-27 Siteco Beleuchtungstechnik Gmbh Leuchte mit Indirektbeleuchtung
US10520168B2 (en) * 2017-04-24 2019-12-31 Lite-On Electronics (Guangzhou) Limited Lampshade and lamp
DE102018222327A1 (de) * 2018-12-19 2020-06-25 Frenger Systemen BV Heiz- und Kühltechnik GmbH Strahlflächenaufbau mit Hochvolt-LEDs
EP3964747A1 (fr) * 2020-09-07 2022-03-09 Signify Holding B.V. Distributeur de lumière imprimé en 3d et luminaire comprenant un distributeur de lumière imprimé en 3d

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DE102016101345A1 (de) 2017-07-27
WO2017129623A1 (fr) 2017-08-03
EP3408584B1 (fr) 2022-04-06
RS63153B1 (sr) 2022-05-31
US20190032885A1 (en) 2019-01-31
US10808911B2 (en) 2020-10-20

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