EP3382262B1 - Lampe - Google Patents

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Publication number
EP3382262B1
EP3382262B1 EP18165239.7A EP18165239A EP3382262B1 EP 3382262 B1 EP3382262 B1 EP 3382262B1 EP 18165239 A EP18165239 A EP 18165239A EP 3382262 B1 EP3382262 B1 EP 3382262B1
Authority
EP
European Patent Office
Prior art keywords
sources
oled
light
lighting lamp
lamp according
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.)
Active
Application number
EP18165239.7A
Other languages
German (de)
English (en)
Other versions
EP3382262A1 (fr
Inventor
Carlotta Francesca Isolina Maria de Bevilacqua
Laura PESSONI
Luca PORCARO
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.)
Artemide SpA
Original Assignee
Artemide SpA
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Filing date
Publication date
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Publication of EP3382262A1 publication Critical patent/EP3382262A1/fr
Application granted granted Critical
Publication of EP3382262B1 publication Critical patent/EP3382262B1/fr
Active legal-status Critical Current
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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
    • F21S8/06—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
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/62—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using mixing chambers, e.g. housings with reflective walls
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • 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
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/90—Light sources with three-dimensionally disposed light-generating elements on two opposite sides of supports or substrates
    • 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]
    • 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 lighting lamp, i.e. a lighting equipment used as a means of lighting objects and/or environments (indoor and/or outdoor).
  • LED lamps using as light sources light emission diodes.
  • LEDs in the lighting sector continues to have some drawbacks, mainly related to the intrinsic characteristics of this type of light source and primarily to their substantially pointed (or in any case very small) nature; in general, for most common applications, large and substantially homogeneous lighting surfaces are needed, so that a plurality of distributed LEDs and/or relatively complex and/or cumbersome optical systems need to be used, resulting in increased costs and complexity of the equipment.
  • OLED Organic Light Emission Diode
  • LED light-emitting diode
  • flat electroluminescent emissive layer formed of an organic film that emits light in response to the transit of electricity.
  • the available OLEDs are not fully satisfactory for use as light sources in lighting equipment, both from the point of view of performance and from the point of view of complexity and construction costs.
  • an OLED has an essentially two-dimensional configuration, presenting itself as a flat panel.
  • the OLEDs currently available are not able to provide adequate lighting power, especially for ambient lighting.
  • WO2012099432A2 discloses a lighting apparatus comprising a rod; a plurality of movable blades connected to the rod and supporting light sources; the light sources may comprise both LED sources and OLED sources.
  • an object of the present invention to provide a lighting lamp which overcomes the drawbacks of the prior art referred to; in particular, an object of the invention is to provide a lighting lamp that is efficient in various modes of use, and also particularly easy to make and which also allows newly conceived forms and/or light effects to be obtained.
  • the present invention therefore relates to a lighting lamp as defined in the appended claim 1.
  • the lighting lamp of the invention is a hybrid lamp, meaning that it comprises heterogeneous light sources: in particular, the lamp of the invention comprises solid state light sources of different types and specifically at least one LED and one or, preferably, several OLEDs.
  • the peculiarities of both types of light source are effectively exploited: the OLED sources, which have an extensive but low luminance surface, high chromatic yield and do not cause dazzling, are advantageously used for localized lighting, for example of work areas, and are associated with more powerful LED sources, able to ensure for example environmental lighting.
  • the lamp of the invention is also particularly simple to make and can be conformed in different ways to obtain original forms and/or light effects.
  • the OLED sources are not used simply to emit light, but also to control the light emitted by the lamp: by appropriately arranging the OLED sources, the emissive surfaces of the OLED sources also act to direct the light emitted by the other sources and concentrate it where desired.
  • the OLED sources can also be used as reflectors of the light emitted by the associated LED source.
  • reference numeral 1 globally denotes a lighting lamp for lighting indoor and/or outdoor environments.
  • the lamp 1 extends along an axis A, also defining a light emission axis (along which at least part of the light emitted by the lamp 1 is directed) and comprises a support structure 2 and solid state light sources 3 supported by the support structure 2 and comprising at least one LED source 4 and at least one OLED source 5.
  • the support structure 2 may have different shapes, also depending on the intended use or type of lamp 1: in the non-limiting example shown, the lamp 1 is a hanging lamp (ceiling lamp) and therefore the support structure 2 is shaped so as to be hung from a ceiling, but it is understood that the lamp 1 may be of a different type (free-standing, wall-mounted, table, etc.) and therefore the support structure 2 can be changed accordingly.
  • the lamp 1 in the non-limiting example shown, the lamp 1 is a hanging lamp (ceiling lamp) and therefore the support structure 2 is shaped so as to be hung from a ceiling, but it is understood that the lamp 1 may be of a different type (free-standing, wall-mounted, table, etc.) and therefore the support structure 2 can be changed accordingly.
  • the support structure 2 comprises a base body 6, which supports the light sources 3.
  • the base body 6 comprises a central portion 7 arranged along the axis A and a plurality of arms 8 which project radially from the portion 7 and are angularly spaced from one another about the axis A and are fixed to respective suspension cables 9.
  • the base body 6 is made at least partly of a heat conductive material so as to perform also a thermal dissipation function of the heat generated by the light sources 3.
  • the light sources 3 include: a LED source 4 positioned, preferably along the axis A, on a top face 11 of the portion 7, facing upwards in use in the environment to be illuminated; and a plurality of OLED sources 5 arranged about the axis A and at least partially facing one another.
  • the support structure 2 may also support a plurality of LED sources 4 variously positioned and distributed.
  • the LED source 4 includes one or more LEDs, in particular so-called power LEDs, having performance such as to illuminate an environment, and is optionally associated with one or more optical elements 13.
  • the optical elements 13 comprise a diffuser 13A, for example an opaline diffuser, facing the LED source 4 and elongated along the axis A, and a reflector 13B, for example a truncated conical or truncated pyramid reflector, which extends along and about the axis A and surrounds the LED source 4 (and also the diffuser 13A) and has a light output aperture 14 transverse to the axis A.
  • a diffuser 13A for example an opaline diffuser
  • a reflector 13B for example a truncated conical or truncated pyramid reflector
  • the reflector 13B is made in a partially reflective and partially transparent material: consequently, the light emitted by the LED source 4 is also distributed, in addition to exiting through the light output opening 14 along the axis A and upwards, about the axis A.
  • the reflector 13B protrudes radially, at least in part, beyond the base body 6, in particular beyond the central portion 7 of the base body 6 so that the light coming from the LED source 4 through the reflector 13B reaches, passing between the arms 8, the OLED sources 5, which also act as auxiliary optical elements for the control of the light emitted by the LED source 4.
  • the light sources 3 include at least one pair of OLED sources 5 substantially facing toward each other and arranged on opposite sides of the axis A and preferably symmetrical with respect to the axis A.
  • the light sources 3 include a plurality of OLED 5 sources arranged about the axis A and spaced angularly about the axis A and at least partially facing one another, having in particular respective emissive surfaces 15 facing one another so that the light emitted by the emissive surface 15 of each OLED 5 source impinges at least partially on the emissive surface 15 of at least another OLED source 5.
  • the lamp 1 includes four OLED 5 sources arranged in pairs of OLED sources 5 facing each other. It is understood that the lamp 1 may include a different number of OLED sources 5 even differently arranged.
  • Each OLED source 5 is a two-dimensional light source having a two-dimensional emissive surface 15, extending along two orthogonal directions with dimensions in the order of several centimetres, for example at least 5-10 cm or even more.
  • Each OLED source 5 comprises a thin, flat panel 16 substantially flat or curved and extending between a pair of opposite faces 17, 18; at least one of the faces 17, 18 defines the emissive surface 15.
  • both faces 17, 18 of each OLED source 5 (or of some OLED sources 5) define respective emissive surfaces 15 of the OLED source 5; in other words, the OLED source 5 emits light from both opposite faces 17, 18 of the panel 16.
  • the OLED sources 5 project downwards (with reference to the normal position of use of the lamp 1 in the environment to be illuminated) from the base body 6 and delimit a light mixing chamber 20: the panels 16 of the OLED sources 5 constitute respective side walls, arranged about the axis A, of the chamber 20.
  • the chamber 20 is not necessarily completely closed about the axis A, being delimited (as in the example shown) only partially by the OLED sources 5 (i.e. by the panels 16).
  • the panels 16 are in fact spaced apart from one another.
  • the OLED sources 5 are joined to the base body 6 at respective upper ends 21 and present respective free end edges 22, delimiting an emission opening 23 of the chamber 20.
  • the OLED sources 5 are connected to the base body 6 by respective joints 24, preferably articulated joints to allow the rotation of each OLED source 5, or of the respective panel 16, with respect to the base body 6, so as to vary the inclination of the OLED sources 5 and specifically of the respective emissive surfaces 15 relative to the axis A.
  • the OLED sources 5 and therefore the respective emissive surfaces 15 are inclined relative to the axis A, and converge towards the base body 6 and diverge towards the emission opening 23.
  • the OLED sources 5 are arranged about the axis A and are substantially at least partially facing each other, the respective emissive surfaces 15 facing one another in the chamber 20, so that the light emitted by all the OLED sources 5 is mixed in the chamber 20 to then exit through the emission opening 23.
  • the OLED sources 5 are arranged so that the light emitted from each OLED source 5 impinges on the emissive surface 15 of one or more other OLED sources 5.
  • the same OLED sources 5 also act as control elements of the light emitted by the lamp 1, in particular mixing the light of the different light sources 3 and directing the light to provide a predetermined light distribution.
  • the OLED sources 5 are arranged in pairs of OLED sources 5 substantially facing one another (although not necessarily parallel) and with the respective emissive surfaces 15 facing one another, so that the light emitted by each OLED source 5 strikes the emissive surface 15 of the other OLED source 5 facing it (and possibly also the others, possibly to a different extent).
  • the LED source 4 and the OLED sources 5 are in fact supported by the support structure 2 so that at least a fraction of the light coming from the LED source 4 and/or from an optical element 13 associated with the LED source 4 (in the present case, the reflector 13B), strikes one or both faces 17, 18 of at least one panel 16; consequently, at least a part of one or more emissive surfaces 15 of the OLED sources 5 are struck by at least a fraction of the light coming from the LED source 4 and/or the optical element 13 associated with the LED source 4, so that the OLED sources 5 also act as auxiliary optical elements to control the light emitted by the LED source 4.
  • an optical element 13 associated with the LED source 4 in the present case, the reflector 13B
  • one or both faces 17, 18 of the panels 16 may also be reflective surfaces, in particular mirror surfaces.
  • the inner faces 17 are white and the outer faces 18 are reflective.
  • the lamp 1 also comprises a diffuser body 25 ( figure 1 ) which surrounds at least some of the light sources 3.
  • the diffuser body 25 encloses all the light sources 3 and has only one opening 26 corresponding to the emission opening 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Electroluminescent Light Sources (AREA)

Claims (10)

  1. Lampe d'éclairage (1), s'étendant le long d'un axe (A) et comprenant une structure de support (2) et des sources de lumière à semi-conducteurs (3) supportées par la structure de support (2) ; les sources de lumière (3) comprenant au moins une source LED (4) positionnée sur une face supérieure (11), tournée vers le haut à l'usage dans l'environnement devant être éclairé, d'une partie (7) d'un corps de base (6), qui supporte les sources de lumière (3), de la structure de support (2), et une pluralité de sources OLED (5), se projetant vers le bas, par rapport à la position normale d'utilisation de la lampe (1) dans l'environnement devant être éclairé, depuis le corps de base (6) et disposées autour de l'axe (A) et espacées angulairement les unes des autres autour de l'axe (A) et se faisant au moins partiellement face pour délimiter une chambre de mélange de lumière (20) ; dans laquelle la source LED (4) et les sources OLED (5) sont supportées par la structure de support (2) de manière à ce qu'au moins une fraction de la lumière provenant de la source LED (4) et/ou d'un élément optique (13) associé à la source LED (4) frappe au moins une partie d'une surface émissive (15) des sources OLED (5), de telle sorte que les sources OLED (5) agissent également comme des éléments optiques auxiliaires pour contrôler la lumière émise par la source LED (4).
  2. Lampe d'éclairage selon la revendication 1, dans laquelle les sources de lumière (3) comportent au moins une paire de sources OLED (5) sensiblement tournées l'une vers l'autre et disposées sur des côtés opposés de l'axe (A) et symétriques par rapport à l'axe (A).
  3. Lampe d'éclairage selon la revendication 1 ou 2, dans laquelle les sources OLED (5) ont des surfaces émissives respectives (15) se faisant face et sont disposées de manière à ce que la lumière émise par la surface émissive (15) de chaque source OLED (5) frappe au moins partiellement la surface émissive (15) d'au moins une autre source OLED (5).
  4. Lampe d'éclairage selon une des revendications précédentes, dans laquelle les sources OLED (5) ont des surfaces émissives respectives (15) se faisant face dans la chambre de mélange de lumière (20), de telle sorte que la lumière émise par les sources OLED (5) est mélangée dans la chambre de mélange de lumière (20) et sort ensuite par une ouverture d'émission (23).
  5. Lampe d'éclairage selon la revendication 4, dans laquelle les sources OLED (5) et les surfaces émissives respectives (15) sont inclinées par rapport à l'axe (A) et divergent vers l'ouverture d'émission (23).
  6. Lampe d'éclairage selon une des revendications précédentes, dans laquelle les sources OLED (5) sont supportées par des panneaux (16) ayant deux faces opposées (17, 18), et un ou plusieurs panneaux (16) ont des sources OLED respectives (5) sur chaque face (17, 18) .
  7. Lampe d'éclairage selon la revendication 6, dans laquelle au moins une fraction de la lumière provenant de la source LED (4) et/ou d'un élément optique (13) associé à la source LED (4) frappe une ou les deux faces (17, 18) d'au moins un panneau (16).
  8. Lampe d'éclairage selon la revendication 6 ou 7, dans laquelle une ou les deux faces (17, 18) d'au moins un panneau (16) sont également des surfaces réfléchissantes.
  9. Lampe d'éclairage selon une des revendications précédentes, dans laquelle les sources OLED (5) sont reliées à la structure de support (2) par des charnières articulées respectives (24) pour permettre la rotation de chaque source OLED (5) par rapport à la structure de support (2), de manière à régler l'inclinaison des sources OLED (5).
  10. Lampe d'éclairage selon une des revendications précédentes, comprenant un corps diffuseur (25) entourant au moins certaines sources de lumière (3).
EP18165239.7A 2017-03-29 2018-03-29 Lampe Active EP3382262B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000034718A IT201700034718A1 (it) 2017-03-29 2017-03-29 Lampada di illuminazione

Publications (2)

Publication Number Publication Date
EP3382262A1 EP3382262A1 (fr) 2018-10-03
EP3382262B1 true EP3382262B1 (fr) 2020-01-08

Family

ID=59700039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18165239.7A Active EP3382262B1 (fr) 2017-03-29 2018-03-29 Lampe

Country Status (2)

Country Link
EP (1) EP3382262B1 (fr)
IT (1) IT201700034718A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010034774A1 (de) * 2010-08-18 2012-02-23 Trilux Gmbh & Co. Kg Leuchte
JP5841406B2 (ja) * 2010-11-05 2016-01-13 株式会社半導体エネルギー研究所 照明装置
KR101780472B1 (ko) * 2011-01-21 2017-09-21 주성엔지니어링(주) 조명 장치
US8841834B2 (en) * 2011-03-18 2014-09-23 Cree, Inc. Solid state lighting systems using OLEDs
JP2013182732A (ja) * 2012-02-29 2013-09-12 Toshiba Lighting & Technology Corp 照明器具
DE202012104303U1 (de) * 2012-11-09 2012-11-20 Trilux Gmbh & Co. Kg Leuchte zum Mischen von Licht aus LED- und OLED-Lichtquellen
US9661709B2 (en) * 2014-03-28 2017-05-23 Universal Display Corporation Integrated LED/OLED lighting system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
IT201700034718A1 (it) 2018-09-29
EP3382262A1 (fr) 2018-10-03

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