EP2895790A1 - Luminaire à paralume équipé de sources lumineuses à led - Google Patents

Luminaire à paralume équipé de sources lumineuses à led

Info

Publication number
EP2895790A1
EP2895790A1 EP13760050.8A EP13760050A EP2895790A1 EP 2895790 A1 EP2895790 A1 EP 2895790A1 EP 13760050 A EP13760050 A EP 13760050A EP 2895790 A1 EP2895790 A1 EP 2895790A1
Authority
EP
European Patent Office
Prior art keywords
grid
light
led light
light sources
optical element
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
EP13760050.8A
Other languages
German (de)
English (en)
Other versions
EP2895790B1 (fr
Inventor
Patrik Gassner
Bernhard KONZILIA
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 EP2895790A1 publication Critical patent/EP2895790A1/fr
Application granted granted Critical
Publication of EP2895790B1 publication Critical patent/EP2895790B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/046—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures having multiple lighting devices, e.g. connected to a common ceiling base
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
    • 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
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
    • F21V11/04—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type adjustable
    • 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
    • F21Y2101/00—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]

Definitions

  • the invention relates to a grid lamp with LED light sources (LED: light-emitting diode).
  • Grid lights are known as such from the prior art.
  • DE 195 20 177 A1 shows an elongate grid lamp in which the grid element has two side reflectors which extend in the longitudinal direction of the lamp, as well as a plurality of transverse slats which extend transversely to the longitudinal direction between the two side reflectors.
  • this grid light is as a light source
  • Grid element which point towards the side of the LEDs, is reflected or absorbed and is no longer available to the light output of the lamp in the sequence. In other words, the efficiency of the light output is limited.
  • the invention is based on the object, a corresponding improved
  • a grid lamp which has at least two LED light sources, and a grid element which extends along a longitudinal axis, wherein the grid element has at least three transverse reflector elements which extend transversely to the longitudinal axis and wherein by two adjacent transverse Reflector elements each have a Lichtlenkong the raster element is limited.
  • the raster lamp is designed such that each of the LED light sources is assigned to one of the light guide units.
  • the grid lamp has an optical element which is formed independently of the grid element and which is configured and arranged such that it acts optically between the at least two LED light sources and the light guide units.
  • the optical element makes it possible to achieve that the light emitted by the LED light sources is directed in a particularly targeted manner to the respective light-directing units. This can increase the efficiency of the light output of the grid lamp.
  • the grid element has two, on the longitudinal axis extending side reflectors, wherein the transverse reflector elements are formed by cross blades, which are arranged connecting the two side reflectors. In this case, it can be prevented in particular with the optical element that a light emitted by one of the LED light sources strikes a back surface of a transverse lamella facing the relevant LED light source. The light can thus be used particularly effectively for the light output of the grid light.
  • the optical element has at least two divergence space segments, each of the divergence space segments being bounded by inner surfaces extending divergently between one of the LED light sources and the light steering unit associated with the respective LED light source.
  • the inner surfaces are designed at least partially reflective. A loss of light between the LED light sources and the light guide units can thereby be kept very low.
  • the optical element has transverse limiting elements which extend transversely to the longitudinal axis, wherein a part of the inner surfaces of each divergence space segment is formed by the transverse limiting elements.
  • the optical element has a concavely curved or trough-shaped, profile-like formed carrier element which extends parallel to the longitudinal axis, wherein a further part of the inner surfaces of each divergence space segment is formed by the carrier element.
  • the at least two LED light sources are arranged supported on the carrier element.
  • the grid lamp is designed such that viewed in a cross section, the carrier element extends on two opposite sides up to the two side reflectors.
  • the optical element can be brought into the intended position in a relative position relative to the grid element particularly easily during the assembly of the grid lamp.
  • the raster element and the optical element are designed such that the optical element can be guided in a separated state from the raster element relative to the raster element parallel to the longitudinal axis guided by the two side reflectors. This can be achieved in particular that for the assembly optical element can be inserted guided from one end side into the grid element.
  • the optical element further comprises a diffuser element optically operatively disposed between the LED light sources and the light directing units.
  • a diffuser element optically operatively disposed between the LED light sources and the light directing units.
  • the diffuser element is a film.
  • the diffuser element may also be formed by a diffusing or by structuring scattering extrusion profile.
  • Fig. 1 is a perspective sketch of a grid element and a
  • FIG. 4 is a of FIG. 1 corresponding sketch of obliquely above and
  • Grid element, facing the diffuser element 1 shows a perspective sketch of a raster element 3 and an optical element 6 of a luminaire according to the invention.
  • the raster element 3 is generally oblong and extends along a longitudinal axis L.
  • FIG. 1 only a part of the raster element 3 is sketched, specifically with respect to the longitudinal axis L, only a longitudinal section of the raster element 3. The same applies analogously to the representation of the optical element 6th
  • the grid lamp is sketched in a section normal to the longitudinal axis L or in a cross section.
  • the louvre luminaire may have a luminaire housing 10 in which the grid element 3 is arranged, wherein preferably also the luminaire housing 10 or the entire grid light is oblong and extends along the longitudinal axis L.
  • the grid lamp may be a recessed luminaire, in particular a recessed ceiling luminaire.
  • Fig. 3 is a longitudinal section through a longitudinal portion of the grid lamp is sketched.
  • the grid lamp at least two LED light sources 2, 2 ' on.
  • the raster luminaire is designed in such a way that a light emitted by the LED light sources 2, 2 'leaves the luminaire, in particular by means of a light source
  • Luminaire housing 10 formed light exit opening 12 of the grid lamp.
  • the grid lamp is oriented relative to the vertical, that a discharge of the light is provided down, so the light exit opening 12 of the lamp housing 10 facing downward, as shown in Figures 1 to 3 by an arrow u indicated.
  • the grid lamp can also be provided differently oriented. In such a case, the directions etc. are to be reinterpreted accordingly.
  • the grid element 3 has transverse reflector elements 4 which extend transversely to the longitudinal axis L, wherein a respective light guide unit 5 of the grid element 3 is delimited by two adjacent transverse reflector elements 4.
  • the grid element 3 has at least three transverse reflector elements 4, so that at least two light guide units 5 are formed.
  • significantly more transverse reflector elements 4 or light-guiding units 5 are provided, For example, at least six or at least ten Lichtlenkmaschineen 5, which are formed in a row along the longitudinal axis L.
  • the sketched in Fig. 3 longitudinal portion of the grid lamp comprises three
  • the distance between two transverse reflector elements 4 along the longitudinal axis L may for example be between 30 mm and 100 mm, preferably between 40 mm and 80 mm.
  • the grid lamp is designed so that each of the LED light sources 2, 2 ' is assigned to exactly one of the light guide units 5. As in that shown in Fig. 2
  • an LED light source 2 may comprise at least two LEDs 21, 22, which are arranged in particular on at least one circuit board 13.
  • Each light guide unit 5 is preferably designed to be closed annularly in a horizontal section, so that a light inlet opening or upper opening of the light guide unit 5 is formed due to the ring shape and a
  • Light exit opening or lower opening The design is such that one of the LED light source 2, 2 ' radiated light through the
  • Light entrance opening of the light guide unit 5 enters the latter and through the
  • the grid element 3 has two, along the longitudinal axis L extending side reflectors 31, 32 and the transverse reflector elements 4 are formed by transverse lamellae 33 which are arranged connecting the two side reflectors 31, 32.
  • Such a raster element 3 is known as such from the prior art.
  • Fig. 4 a perspective view corresponding to FIG. 1 is sketched at an angle obliquely from above. It can be seen that the transverse lamellae 33 have a back surface 331 on their side pointing toward the LED light sources 2, 2 'or on their upward-facing side and - as indicated in FIG. 3 - two main surfaces 332, 333.
  • Each Lichtlenkmaschine 5 is thus through a main surface 332nd a first transverse lamella and a main surface 333 of an adjacent to the first transverse lamella, second transverse lamella bounded in the longitudinal direction.
  • the raster lamp further comprises an optical element 6, which is formed independently of the raster element 3 and which is configured and arranged such that it acts optically between the LED light sources 2, 2 and the light guide units 5.
  • an optical element 6 is designed such that a of one of the LED light sources 2, 2 'emitted light is only in the, the relevant LED light source 2, 2' associated light-deflecting element 5 is irradiated.
  • the optical element 6 may have divergence space segments 7, wherein preferably each of the divergence space segments 7 is assigned to exactly one of the LED light sources 2, 2 '. Each divergence space segment 7 is through
  • the divergence space segments 7 can thus be designed quasi funnel-shaped, wherein an LED light source 2, 2 'is arranged on or in the smaller or upper funnel opening and the larger or lower
  • the larger funnel opening is designed such that it corresponds in shape and size of the upper opening or light inlet opening of the relevant light guide unit 5. In this way, it can be achieved that particularly little light of the LED light source 2, 2 is lost for the radiation of the grid lamp.
  • light mixing chambers or light chambers can be formed by the divergence space segments 7.
  • the inner surfaces 71, 72, 73, 74 are designed to be at least partially reflective, in particular highly reflective. Preferably, all inner surfaces 71, 72, 73, 74 are designed reflecting.
  • the inner walls 71, 72, 73, 74 may be designed for this purpose, for example, white or as reflective aluminum surfaces.
  • the optical element 6 preferably further comprises transverse limiting elements 8 which extend transversely to the longitudinal axis L, wherein a part of the inner surfaces, namely two transversely to the longitudinal axis transverse inner surfaces 73, 74 of each divergence Room segment 7 are formed by the transverse boundary elements 8.
  • the transverse limiting elements 8 may advantageously be formed as planar elements, which are inclined with respect to the vertical, for example, between 30 ° and 60 ° inclined oriented oriented manufacturing technology.
  • the transverse limiting elements 8 are designed such that the transverse inner surfaces 73, 74 formed by them extend up to the upper edges of those main surfaces 332, 333, by which the relevant light-guiding unit 5 is limited in the longitudinal direction. In this way, it is possible to prevent a light emitted by the LED light sources 2, 2 'from striking a back surface 331 of a transverse lamella 33.
  • the transverse limiting elements 8 preferably extend up to the height of the relevant LED light source 2, 2 ' , or to the LEDs 21, 22 of the relevant LED light source 2, 2 ' .
  • the optical element 6 preferably also has a concavely shaped channel-shaped, profiled carrier element 9 which extends parallel to the longitudinal axis L, wherein a further part of the inner surfaces namely two longitudinal inner surfaces 71, 72 of each extending longitudinally to the longitudinal axis L Divergence space segment 7 is formed by the carrier element 9.
  • the optical element 6 can be advantageously designed as a stable unit.
  • the carrier element 9 is formed from one piece, so that manufacturing technology advantageously the two longitudinal inner surfaces 71, 72 of all divergence-space segments 7 are formed by only one component.
  • the carrier element 8 is preferably designed in such a way that it extends on two opposite sides as far as the side reflectors 31, 32. In the example shown, the design is such that the
  • the design is furthermore preferably such that the optical element 6 can be guided guided by the two side reflectors 31, 32 in a state separated relative to the raster element 3, parallel to the longitudinal axis L, from the raster element 3.
  • the side reflectors 31, 32 form in this case, so to speak
  • Grid lamp to be replaced in particular, in the case of a corresponding grid lamp which has a traditional fluorescent tube as the light source, it can be replaced particularly easily by a corresponding module comprising the optical element 6 and the LED light sources 2, 2 '.
  • the module thus formed can be easily inserted into the front side of the raster element 3 and then electrically connect accordingly.
  • the module may in particular consist of the grid element 6 and the LED light sources 2, 2 '.
  • the optical element 6 also has a diffuser element 11, which is optically effective between the LED light sources 2, 2 'and the
  • Light guide units 5 is arranged.
  • the diffuser element 11 is concavely curved with respect to a, the LED light sources 2, 2 'side facing.
  • the light emitted by the LED light sources 2, 2 ' typically quasi in the form of dots, can be distributed in such a way that it is distributed more homogeneously from the outside when the raster lamp is viewed
  • the diffuser element 11 may be formed in the form of a diffuser film.
  • the diffuser element 11 is supported on the carrier element 9.
  • the diffuser element 11 consists of one piece. Due to the design of the optical element 6, LED light sources of different designs can be incorporated in the divergence space segments 7 in a particularly flexible manner. Also, the diffuser element 11 can be particularly advantageous from different types of diffuser elements select.
  • a raster lamp according to the invention is particularly suitable as a lamp that can deliver a high amount of light, in particular as a workstation-compatible lamp with small Lichtaustrittsfiamba, so that ausblendende reflectors are required in multiple arrangements or a lighting grid.

Landscapes

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

Abstract

L'invention concerne un luminaire à paralume qui comporte au moins deux sources lumineuses à LED (2, 2') ainsi qu'un paralume qui s'étend le long d'une axe longitudinal (L). Le paralume comprend au moins trois éléments réfléchissants transversaux (4) qui s'étendent transversalement à l'axe longitudinal (L) et deux éléments réfléchissants transversaux (4) adjacents délimitent respectivement un module déflecteur de lumière (5) du paralume. Le luminaire à paralume est configuré de façon que chacune des sources lumineuses à LED (2, 2') est respectivement associée à un des modules déflecteurs de lumière (5). En outre, le luminaire à paralume comporte un élément optique indépendant du paralume qui est configuré et disposé de façon à agir optiquement entre lesdites au moins deux sources lumineuses à LED (2, 2') et les modules déflecteurs de lumière (5). L'élément optique permet de diriger la lumière émise par les sources lumineuses à LED (2, 2') de manière particulièrement ciblée sur les modules déflecteurs de lumière (5) respectifs et d'augmenter ainsi le rendement lumineux du luminaire à paralume.
EP13760050.8A 2012-09-11 2013-09-11 Luminaire à paralume équipé de sources lumineuses à led Not-in-force EP2895790B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012103452U DE202012103452U1 (de) 2012-09-11 2012-09-11 Rasterleuchte mit LED-Lichtquellen
PCT/EP2013/068796 WO2014041016A1 (fr) 2012-09-11 2013-09-11 Luminaire à paralume équipé de sources lumineuses à led

Publications (2)

Publication Number Publication Date
EP2895790A1 true EP2895790A1 (fr) 2015-07-22
EP2895790B1 EP2895790B1 (fr) 2016-12-21

Family

ID=49162154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13760050.8A Not-in-force EP2895790B1 (fr) 2012-09-11 2013-09-11 Luminaire à paralume équipé de sources lumineuses à led

Country Status (4)

Country Link
EP (1) EP2895790B1 (fr)
CN (1) CN104603523A (fr)
DE (1) DE202012103452U1 (fr)
WO (1) WO2014041016A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014115823A1 (de) * 2014-10-30 2016-05-04 Itz Innovations- Und Technologiezentrum Gmbh LED-Entblendungsraster mit Finnen
DE102019111593A1 (de) * 2019-05-06 2020-11-12 Zumtobel Lighting Gmbh Längliche Leuchte
USD940946S1 (en) * 2019-09-19 2022-01-11 Changzhou Kaisen Photoelectricity Co., Ltd. LED light
CN210687896U (zh) * 2019-09-30 2020-06-05 欧普照明股份有限公司 配光组件及照明灯具

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Publication number Priority date Publication date Assignee Title
DE3803951A1 (de) * 1988-02-10 1989-08-24 Mentor Gmbh & Co Reflektor-leuchte
DE29504730U1 (de) 1994-12-09 1996-04-18 Zumtobel Licht Einbauleuchte
JP2004006317A (ja) * 2002-04-17 2004-01-08 Box:Kk 面発光装置
JP4290196B2 (ja) * 2004-07-06 2009-07-01 株式会社浅葱クリエイト 面状光源および電飾看板
DE102004040130A1 (de) * 2004-08-18 2006-02-23 Aldi Einkauf Gmbh & Co. Ohg Beleuchtungseinrichtung
US20060104061A1 (en) * 2004-11-16 2006-05-18 Scott Lerner Display with planar light source
EP1960710B1 (fr) * 2005-12-07 2015-01-07 Koninklijke Philips N.V. Module d'eclairage
DE202008003097U1 (de) * 2008-03-05 2009-08-06 Zumtobel Lighting Gmbh Beleuchtungsanordnung mit Tragprofil
CN101614367B (zh) * 2008-06-25 2011-12-28 富准精密工业(深圳)有限公司 发光二极管灯具
CN201269439Y (zh) * 2008-09-30 2009-07-08 鹤山丽得电子实业有限公司 一种直射led格栅灯
JP5308125B2 (ja) * 2008-11-11 2013-10-09 パナソニック株式会社 照明器具
EP2187113A1 (fr) * 2008-11-18 2010-05-19 Toshiba Lighting & Technology Corporation Dispositif d'éclairage incluant un couvercle translucide pour diffuser une lumière à partir d'une source lumineuse
WO2011001329A1 (fr) * 2009-06-29 2011-01-06 Koninklijke Philips Electronics N.V. Luminaire à diode électroluminescente utilisant des écrans comme dissipateur de chaleur
IT1396316B1 (it) * 2009-10-06 2012-11-16 Giovine Di Proiettore ad ampia diffusione con sorgenti leds precollimate.
CN201531777U (zh) * 2009-10-30 2010-07-21 史杰 Led光源格栅灯
DE202009016793U1 (de) 2009-12-11 2011-04-21 Zumtobel Lighting Gmbh Anordnung zur Lichtabgabe
TWM388608U (en) * 2010-05-20 2010-09-11 Yu-Lin Peng Improved structure of light steel frame lamp

Also Published As

Publication number Publication date
CN104603523A (zh) 2015-05-06
EP2895790B1 (fr) 2016-12-21
WO2014041016A1 (fr) 2014-03-20
DE202012103452U1 (de) 2013-12-12

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