WO2015024633A1 - Dispositif d'éclairage et appareil ménager électronique pourvu d'un tel dispositif d'éclairage - Google Patents

Dispositif d'éclairage et appareil ménager électronique pourvu d'un tel dispositif d'éclairage Download PDF

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Publication number
WO2015024633A1
WO2015024633A1 PCT/EP2014/002172 EP2014002172W WO2015024633A1 WO 2015024633 A1 WO2015024633 A1 WO 2015024633A1 EP 2014002172 W EP2014002172 W EP 2014002172W WO 2015024633 A1 WO2015024633 A1 WO 2015024633A1
Authority
WO
WIPO (PCT)
Prior art keywords
lighting device
layer
electrode layer
organic light
emitting diode
Prior art date
Application number
PCT/EP2014/002172
Other languages
German (de)
English (en)
Inventor
Bruno Fuhge
Andreas Maigler
Thomas Frommelt
Joachim Lyszus
Ralph Stohr
Original Assignee
Diehl Ako Stiftung & Co. Kg
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 Diehl Ako Stiftung & Co. Kg filed Critical Diehl Ako Stiftung & Co. Kg
Publication of WO2015024633A1 publication Critical patent/WO2015024633A1/fr

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
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0004—Personal or domestic articles
    • F21V33/0044—Household appliances, e.g. washing machines or vacuum cleaners
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • 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
    • F21W2131/305—Lighting for domestic or personal use for refrigerators
    • 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 device, in particular a lighting device with an organic light emitting diode, and an electronic household appliance with such a lighting device as decorative lighting or surface lighting.
  • Refrigerators and / or freezers - as an example of electronic household appliances - are usually equipped with an interior lighting, which illuminate the interior with the access door open.
  • an interior lighting comprises at least one organic light-emitting diode (OLED), which illuminates the interior.
  • OLEDs are in particular attached to the inner walls of the device and / or installed parts in the device.
  • Extractor hoods - as another example of electronic household appliances - are usually equipped with at least one light source to illuminate the hotplates below the hood. These bulbs are usually installed in the bottom of the hood housing and coupled with an operating device of the hood.
  • design elements such as logos, graphic elements, colored elements, etc.
  • design elements are often provided on the device housings of electronic household appliances. These design elements are for example printed on the device housing or glued as a foil on the device housing. It is the object of the invention to provide an improved lighting device which can be used in a variety of ways, in particular attached to device housings of electronic household appliances. This object is achieved by a lighting device having the features of claim 1. Particularly preferred embodiments and further developments of the invention are the subject of the dependent claims.
  • the lighting device comprises: an organic light-emitting diode which has a first electrode layer, a light-permeable second electrode layer and a light-emitting layer or layer sequence between the two electrode layers; and an electrical receiving device for wireless tapping of electrical energy from an alternating field, which is electrically conductively connected to the first electrode layer and the second electrode layer of the organic light emitting diode.
  • Organic light emitting diodes can be manufactured over a large area and flexible or deformable.
  • these lighting devices can be provided in almost any dimensions and shapes and adapted to almost any shaped objects. Due to the use of electrical receiving devices for wireless tapping of electrical energy from an alternating field, the lighting devices or their organic light emitting diodes can be supplied with electrical power wirelessly and it eliminates the need for corresponding electrical connections. Overall, these lighting devices can therefore be used very diverse.
  • the lighting devices of the invention may be applied to appliance housings of home electronic appliances and the like in almost any shapes, designs and sizes as decorative or surface lighting. With such decorative lighting, there are many design possibilities.
  • the wireless power supply also eliminates the risk of corrosive connections and design restrictions.
  • the term "electrical receiving device” is intended in this context to refer to any type of device which is capable of wirelessly or contactlessly tap electrical energy from an alternating field and connected to it To provide electrode layers of the organic light emitting diode with electrical energy.
  • the electrical receiving device is based in particular on the principle of an inductive coupling for the transmission of electrical energy.
  • the electrical receiving device preferably has at least one coil in which a voltage is induced by the (magnetic) alternating field.
  • the electrical receiving device in addition to the at least one coil and at least one capacitor to form a resonant circuit.
  • the alternating field is preferably generated in the vicinity of the electrical receiving device of the lighting device by an alternating field generator, which preferably has at least one coil through which an alternating current flows, which is preferably connected to a high-frequency generator in order to generate the alternating field.
  • the alternating field generator in addition to the at least one coil and at least one capacitor to form a transmitting resonant circuit.
  • the resonances of this transmitting resonant circuit and of the resonant circuit of the electrical receiving device are preferably chosen so that the highest possible efficiency can be achieved for the energy transmission.
  • the lighting device has at least one organic light-emitting diode.
  • the lighting device has a plurality of organic light-emitting diodes which are arranged next to one another (with more or less distance between them) in a preferably uniform component.
  • these are preferably independently controllable.
  • these have the same or different sizes, shapes, designs, intensities and / or light colors.
  • the organic light-emitting diode and the electrical receiving device are designed as a uniform layer composite. Due to the configuration as a uniform layer composite lighting device has a very compact design and can be easily mounted as a unit.
  • the electrical receiving device is preferably arranged on the side facing away from the second electrode layer of the organic light emitting diode.
  • an electrical insulating layer is provided on the, the organic light-emitting diode side facing away from the electrical receiving device.
  • the electrical receiving device integrated in an electrical insulating layer.
  • the lighting device of the invention can optionally also be mounted on objects with an electrically conductive surface or made of an electrically conductive material.
  • the electrical insulating layer also forms a distance between the electrical receiving device of the lighting device and an associated alternating field generator.
  • an electrical insulating layer is provided between the first electrode layer of the organic light emitting diode and the electrical receiving device.
  • the first electrode layer and the electrical receiving device are integrated in a common electrical insulating layer and thereby electrically isolated from each other.
  • the organic light-emitting diode has an electrically insulating substrate layer on the side facing the first electrode layer.
  • the organic light emitting diode has an electrically conductive substrate layer serving as the first electrode layer.
  • the organic light emitting diode has an electrically insulating substrate layer with an integrated first electrode layer.
  • the organic light-emitting diode has a transparent, electrically insulating covering layer covering the second electrode layer.
  • This cover layer can serve in particular as mechanical protection and / or moisture protection for the organic light-emitting diode or the entire lighting device.
  • the cover layer is preferably made essentially of a transparent plastic or glass material.
  • the cover layer like the second electrode layer, is designed to be transparent so that the light emitted by the organic layer can at least partially pass through it out of the lighting device.
  • the lighting device is at least partially self-adhesive on its side facing away from the second electrode layer.
  • the lighting device preferably has an adhesive layer, a magnetic film, a Velcro strip or the like on.
  • the self-adhesive configuration of the lighting device is preferably designed for a detachable attachment of the lighting device to an object, but can optionally also be designed for a permanent attachment.
  • the invention also relates to an electronic household appliance, comprising: a device housing; an alternating field generator disposed in or on the apparatus housing; and designed as a decorative lighting lighting device of the invention on the device housing, the electrical receiving device is wirelessly coupled to the alternating field generator.
  • the electronic household appliance is preferably a refrigerator and / or freezer, a laundry treatment appliance, a stove, a dishwasher, an extractor hood or the like.
  • the invention further relates to an electronic household appliance, which comprises: a device housing; an alternating field generator disposed in or on the apparatus housing; and designed as a surface lighting device lighting device of the invention on the device housing, the electrical receiving device is wirelessly coupled to the alternating field generator.
  • the electronic household appliance is preferably an extractor hood, a refrigerator and / or freezer, a laundry treatment appliance, a stove, a dishwasher or the like.
  • the alternating field generator is preferably arranged invisibly for the user in / on the device housing of the electronic household appliance.
  • the surface area of the alternating field generator or its transmitting resonant circuit is preferably smaller than that of the lighting device or its electrical receiving device.
  • the electronic household appliance has one or more lighting devices. In the case of a plurality of lighting devices, these can optionally be coupled to a common alternating field generator, in groups with common alternating field generators or in each case with their own alternating field generators.
  • Fig. 1 is a sectional view of a lighting device according to a first embodiment of the invention
  • Fig. 2 is a sectional view of a lighting device according to a second embodiment of the invention.
  • FIG. 3 is a sectional view of a lighting device according to a third embodiment of the invention.
  • FIG. 4 is a simplified block diagram of a lighting device according to the invention with its wireless power supply
  • 5A-C are perspective views of various electronic household appliances with lighting devices according to the invention as decorative lighting on their device housings as application examples of the invention.
  • Fig. 6 is a perspective view of an extractor hood with a lighting device according to the invention as a surface illuminant on her hood screen as another example of application of the invention.
  • a lighting device 10 according to a first exemplary embodiment will now be explained in more detail.
  • the lighting device 10 is designed in particular as a uniform layer composite, wherein the thickness direction of the layers in each case in the top / bottom direction in Figure 1 runs.
  • This lighting device with a uniform layer composite forms a structural unit that can be easily attached to an object such as a device housing of an electronic household appliance.
  • the layer composite of the lighting device 10 contains, in particular, an organic light-emitting diode (OLED) 12.
  • OLED organic light-emitting diode
  • the OLED 12 can basically be constructed like a conventional OLED. It has, for example, an electrically insulating substrate layer 14, a first electrode layer 16 serving as cathode, a transparent second electrode layer 18 serving as anode (eg ITO, etc.), a light-emitting organic layer or layer sequence 20 between the two electrode layers 16 and 18 and serving as a cover layer 22 translucent support in the form of, for example, a plastic film (eg, PET, etc.).
  • the control electronics (not shown) of this organic light-emitting diode 12 is printed, for example, on the substrate layer 14.
  • the operation of such an OLED is well known to those skilled in the art, so that it is possible to dispense with further explanation at this point.
  • the OLED 12 adjoins the substrate layer 14 by an electrical receiving device 24.
  • This electrical receiving device 24 is electrically conductively connected to the first electrode layer 16 of the OLED 12 via a first electrical connection 30a and electrically conductively connected to the second electrode layer 18 of the OLED 12 via a second electrical connection 30b.
  • the electrical receiving device 24 contains, for example, at least one coil in which a voltage can be induced by a magnetic alternating field 46.
  • the electrical receiving device 24 in addition to this at least one coil and at least one capacitor to form a resonant circuit.
  • the alternating field 46 is generated in the vicinity of the electrical receiving device 24 of the lighting device 10 by an alternating field generator 40.
  • This alternating field generator 40 has, for example, a high-frequency generator 42, which feeds a transmitting resonant circuit 44.
  • This transmitting resonant circuit 44 preferably has at least one coil through which an alternating current flows, and moreover at least one capacitor.
  • the resonances of this transmitting resonant circuit 44 and of the resonant circuit of the electrical receiving device 24 are, for example, coordinated with one another such that the highest possible efficiency can be achieved for the energy transmission between the two oscillating circuits.
  • the lighting device 10 with the electrical receiving device 24 can be supplied in this way wireless or contactless with electrical energy. This results in a variety of possible uses for the lighting device 10.
  • the applications of the lighting device 10 can be further expanded.
  • the principle of such a contactless energy transfer is described for example in DE 10 2008 024 779 A1 in connection with a classical light-emitting diode in detail described. With regard to the structure and mode of operation of the energy transmission, reference is therefore made in full to this document at this point.
  • the lighting device 10 has an electrical insulating layer 26 adjacent to the electrical receiving device 24. With this electrical insulating layer 26, the lighting device 10 can also be mounted on electrically conductive surfaces and objects.
  • the lighting device 10 is preferably configured self-adhesive.
  • it has an adhesive layer 28, a magnetic film, a Velcro strip or the like adjacent to the electrical insulating layer 26.
  • the lighting device 10 is easily (i.e., in particular without tools) and preferably detachably attachable to an object.
  • FIG. 2 a lighting device 10 according to a second exemplary embodiment will now be explained in more detail.
  • the same or corresponding components are identified by the same reference numerals as in the above first embodiment.
  • the layer composite of the lighting device 10 contains, in particular, an organic light-emitting diode (OLED) 12 '. In comparison to the OLED 12 of the above-described lighting device of FIG.
  • OLED organic light-emitting diode
  • this OLED 12 ' has an electrically conductive substrate layer 32 which forms the first electrode layer of the OLED 12'. Between this electrically conductive substrate layer 32 and the electrical receiving device 24, an electrical insulating layer 34 is arranged.
  • the drive electronics (not shown) of the OLED 12 ' is printed, for example, on the substrate layer 32 or the insulating layer 34.
  • the construction and operation of the lighting device 10 of FIG. 2 correspond to the above-described lighting device of the first embodiment
  • the layer composite of the lighting device 10 contains an organic light-emitting diode (OLED) 12 ".
  • OLED organic light-emitting diode
  • this OLED 12 has an electrically insulating substrate layer 36 into which an electrical conductor structure 38 is integrated.
  • This electrical conductor structure 38 in the substrate layer 36 forms both the first electrode layer of the OLED and the electrical receiving device.
  • the control electronics (not shown) of the OLED 12 " are printed, for example, on the substrate layer 36.
  • the structure and mode of operation of the lighting device 10 of FIG. 3 correspond to the above-described lighting device of the first exemplary embodiment.
  • FIGS. 5A-C and 6 various advantageous applications of the light-emitting devices 10 described above will now be described by way of example.
  • FIG. 5A shows by way of example a washing machine as an electronic household appliance.
  • a washing machine as an electronic household appliance.
  • several lighting devices 10 are mounted as decorative lighting.
  • the decorative lighting has different sizes, shapes, designs and colors.
  • FIG. 5B shows by way of example a stove and an extractor hood arranged above it as electronic household appliances.
  • FIG. 5C shows by way of example a refrigerator as another electronic household appliance.
  • a plurality of identical or different, identically or differently colored, identically dimensioned or differently dimensioned, identically or differently designed lighting devices 10 can be attached.
  • the lighting devices 10 form different Decorative lighting in the form of, for example, a lit company logo, illuminated design elements or ornaments, illuminated reference elements, display elements, illuminated boundary elements and the like. Due to the material properties of the light-emitting devices and in particular of their OLEDs, the light-emitting devices can also be applied to single or multiple curved surfaces of the device housings 50, 52 and, for example, also be guided around housing edges.
  • the device housings 50 may optionally also be provided on their insides with lighting devices 10 according to the invention as decorative lighting. This is particularly suitable for refrigerators and / or freezers as in Figure 5C in question.
  • FIG. 6 shows, by way of example, an extractor hood as an electronic household appliance.
  • the extractor hood also has a hood screen 54 in addition to the hood housing 52.
  • a large-area lighting device 10 of the invention is mounted as a surface lighting means. This surface illuminant allows the most homogeneous possible, glare-free and shadow-free lighting of one or more hotplates below the hood.
  • the entire layer composite of the lighting device is preferably transparent / transparent.
  • FIGS. 5B and 6 can optionally also be combined with each other.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L'invention concerne un dispositif d'éclairage (10) comprenant une diode électroluminescente organique (12, 12', 12"), laquelle présente une première couche d'électrodes (16, 32, 38), une deuxième couche d'électrodes (18) transparente et une couche ou succession de couches électroluminescentes (20) entre les deux couches d'électrodes (16, 18, 32, 38), et un dispositif de réception électrique (24, 38) permettant le prélèvement sans fil d'énergie électrique d'un champ alternatif, ce dispositif de réception étant relié de manière électroconductrice à la première couche d'électrodes (16, 32, 38) et à la deuxième couche d'électrodes (18) de la diode électroluminescente organique (12, 12', 12"). Des dispositifs d'éclairage (10) de ce type peuvent être utilisés de manière avantageuse en tant qu'éclairages décoratifs ou moyens d'éclairage plans sur le corps (50, 52) d'un appareil ménager électronique, tel que par exemple un appareil de réfrigération et/ou de congélation, une hotte aspirante, une cuisinière, un lave-vaisselle, un appareil de traitement du linge, etc.
PCT/EP2014/002172 2013-08-21 2014-08-07 Dispositif d'éclairage et appareil ménager électronique pourvu d'un tel dispositif d'éclairage WO2015024633A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013013929 2013-08-21
DE102013013929.5 2013-08-21

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WO2015024633A1 true WO2015024633A1 (fr) 2015-02-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016105454A1 (de) * 2016-03-23 2017-09-28 Osram Oled Gmbh Organisches lichtemittierendes Bauelement, Verfahren zum Herstellen eines organischen lichtemittierenden Bauelements und Verfahren zum Betreiben eines organischen lichtemittierenden Bauelements

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1863093A2 (fr) * 2006-05-30 2007-12-05 Osram Opto Semiconductors GmbH Composant organique émettant de la lumière, dispositif doté d'un composant organique émettant de la lumière et dispositif d'éclairage tout comme procédé destiné à la fabrication d'un composant organique émettant de la lumière
US20120262432A1 (en) * 2011-04-15 2012-10-18 Semiconductor Energy Laboratory Co., Ltd. Light-emitting device, display device, light-emitting system, and display system
CN202721199U (zh) * 2012-07-16 2013-02-06 上海大学 一种无线供电oled器件
WO2013103028A1 (fr) * 2012-01-05 2013-07-11 日東電工株式会社 Élément émetteur de lumière de type à alimentation d'énergie sans fil et dispositif émetteur de lumière

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1863093A2 (fr) * 2006-05-30 2007-12-05 Osram Opto Semiconductors GmbH Composant organique émettant de la lumière, dispositif doté d'un composant organique émettant de la lumière et dispositif d'éclairage tout comme procédé destiné à la fabrication d'un composant organique émettant de la lumière
US20120262432A1 (en) * 2011-04-15 2012-10-18 Semiconductor Energy Laboratory Co., Ltd. Light-emitting device, display device, light-emitting system, and display system
WO2013103028A1 (fr) * 2012-01-05 2013-07-11 日東電工株式会社 Élément émetteur de lumière de type à alimentation d'énergie sans fil et dispositif émetteur de lumière
EP2728968A1 (fr) * 2012-01-05 2014-05-07 Nitto Denko Corporation Élément émetteur de lumière de type à alimentation d'énergie sans fil et dispositif émetteur de lumière
CN202721199U (zh) * 2012-07-16 2013-02-06 上海大学 一种无线供电oled器件

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016105454A1 (de) * 2016-03-23 2017-09-28 Osram Oled Gmbh Organisches lichtemittierendes Bauelement, Verfahren zum Herstellen eines organischen lichtemittierenden Bauelements und Verfahren zum Betreiben eines organischen lichtemittierenden Bauelements

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