EP2084474A2 - Appareil frigorifique pourvu d'un moyen lumineux - Google Patents

Appareil frigorifique pourvu d'un moyen lumineux

Info

Publication number
EP2084474A2
EP2084474A2 EP07821520A EP07821520A EP2084474A2 EP 2084474 A2 EP2084474 A2 EP 2084474A2 EP 07821520 A EP07821520 A EP 07821520A EP 07821520 A EP07821520 A EP 07821520A EP 2084474 A2 EP2084474 A2 EP 2084474A2
Authority
EP
European Patent Office
Prior art keywords
electroluminescent
refrigerating appliance
appliance according
electroluminescent element
interior
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.)
Withdrawn
Application number
EP07821520A
Other languages
German (de)
English (en)
Inventor
Peter Bauer
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2084474A2 publication Critical patent/EP2084474A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D27/00—Lighting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/36—Visual displays

Definitions

  • the present invention relates to a refrigeration device with a light source which can be used in particular as an operating state display or for illuminating an interior of the refrigeration device.
  • incandescent or neon lamps are used, however, especially if they are used as interior lighting, have the disadvantage that their waste heat output exceeds the light output many times.
  • the strong heating makes it necessary to accommodate them in a spacious housing that either protrudes into the interior and thus obstructs its use, or must be sunk into the wall of the refrigerator, resulting in a weak point of the heat insulation.
  • high-performance LEDs these were also considered for refrigeration appliance lighting.
  • they generally have small dimensions and a better light-to-heat ratio than incandescent bulbs, their light is focused so that scattered optics are spaced apart from each other to achieve uniform interior illumination or a highly visible display over a wide angle range
  • Light emitting diodes are required. Therefore, the dimensions of a lighting assembly using light emitting diodes are not substantially smaller than those of a lighting assembly with light bulb.
  • OLEDs organic light emitting diodes
  • One problem with current O LE D phosphors is their sensitivity to oxygen and water. A complete shielding of these two substances, especially from water, is difficult to ensure in a refrigeration device. An incomplete shielding leads to premature failure of the OLEDs.
  • the object of the invention is therefore to provide a refrigeration device with bulbs, which allows a large-scale illumination, requires a minimum installation depth and yet is sufficiently robust.
  • the object is achieved according to the invention by using an electroluminescent element as the luminous means.
  • an electroluminescent element as the luminous means.
  • the electroluminescent effect discovered by George Destriau in 1936 does not base light emission on carrier recombination at a boundary layer between differently doped semiconductor regions, but upon excitation of electrons of an electroluminescent pigment by a strong alternating electric field and return of these excited electrons to their ground state under light emission.
  • electroluminescent pigments conventionally doped zinc sulfides are used, wherein the color of the light generated depends on the doping used. While zinc sulfide is inherently chemically stable, it is highly hygroscopic, so it must be reliably shielded from water like the semiconductor material of the OLEDs. Reliable shielding of the electroluminescent pigments is, however, in principle simpler than with OLEDs. Since the light emission is not based on a current flow through the pigment material, but only on the influence of a strong electric field, in particular, the possibility arises to use a microencapsulated pigment, d. H. a pigment whose individual particles are provided with a protective layer. These are therefore protected even to a certain extent from chemical influences from the environment, even if the edges of a layer acted upon with the pigment itself are not or only partially shielded from the environment. This considerably simplifies the production of the luminous means.
  • the electroluminescent element may be visible from the outside attached to a housing of the refrigeration device to form an operating status indicator. It can also be mounted in an interior to illuminate this. For this purpose it may be attached to an inner container wall or to a built-in part of the interior. The latter has the advantage that in the case of a defect or if the light yield of the electroluminescent element deteriorates due to natural aging, it can simply be replaced together with the built-in component. Electroluminescent pigments are known with different light colors.
  • a warmer temperature zone is associated with a warmer light color than a cold temperature zone.
  • the layer acted upon by the electroluminescent pigment can be enclosed between two cover films, one of which is fastened to a component surface of the refrigeration device. This allows the use of prefabricated electroluminescent composite films comprising the coversheets and the electroluminescent layer, as well as electrodes on either side of the electroluminescent layer, which can conveniently be trimmed to a desired format for use in the refrigerator.
  • FIG. 1 is a perspective view of a refrigerator according to a first embodiment of the invention.
  • FIG. 2 shows a section through part of a housing wall of the refrigeration device from FIG. 1;
  • FIG. 3 is a perspective view of a refrigerator according to a second embodiment;
  • FIG. 4 shows a partial section through a shelf of the refrigerator of FIG .. 3
  • Fig. 1 shows a refrigeration device with a housing 1 and a hinged door 2, which limit a thermally insulated interior 3.
  • a plurality of light indicators 4 for indicating an operating state of the refrigeration device such as on / off, overtemperature, quick cooling operation, etc. are arranged.
  • the operating status displays 4 are formed by mutually separate pieces of electroluminescent composite film, which are attached to the inside of a translucent window 5 of the housing front.
  • the plurality of operating status displays 4 could also be formed by a contiguous electroluminescent layer provided with a plurality of electrodes which are spatially separate and can be excited independently of one another.
  • the interior 3 is vertically structured by ribs 6 formed on side walls of its inner container.
  • the ribs 6 are provided as carriers for not shown in the figure, since knowndegutabsteller.
  • Above and below the ribs 6 each large-area electroluminescent elements 7 to 10 are arranged.
  • the electroluminescent elements 7 to 10 may each extend in one piece from a side wall of the inner container on the rear wall to the opposite side wall and thus enable a virtually shadow and glare-free illumination of the interior.
  • the composition of the microencapsulated electroluminescent pigments is different from one of the electroluminescent elements 7 to 10 to the other. All elements 7 to 10 provide a substantially white light, the color temperature, however, increases according to their arrangement in the interior 3 from top to bottom. Ie. while the topmost element 7 is reddish, the bottom 10 appears bluish. Thus, the user is intuitively made aware that the temperature in the lower compartments is lower, so that he involuntarily tends to use these for the storage of refrigerated goods, which requires lower storage temperatures.
  • Fig. 2 shows schematically a section through a wall portion of the housing. The inner container is denoted by 1 1 and limited by him heat insulation layer 12.
  • the electroluminescent element 7 adhesively bonded to the inner container 11 is a composite of a base film 13, an electrode layer 14 applied thereon, a dielectric layer 15 doped with zinc sulfide as a photoluminescent pigment, a second electrode layer 16 projecting through the dielectric layer 15
  • the electrodes 14, 16 do not extend to the edges 18 of the water and water vapor impermeable films 13, 17, these edges 18 may be welded together to protect the dielectric layer 15 from moisture to protect.
  • the photoluminescent element of large-area composite material is cut to size, so that the dielectric layer 15 and the electrodes 14, 16 each extend to the edges of the base and cover films 13, 18, the films 13, 17 are allowed do not touch.
  • the pasted on the inner container 11 electroluminescent elements are omitted; instead, the shelves 20 resting on the ribs 6 themselves serve as illuminants.
  • 4 shows a partial section through such a shelf 20.
  • the structure is similar to that of an insulating glass pane: two plates 21 made of safety glass or a transparent plastic are held spaced apart by a circumferential profile 22 on their edges. The profile 22 closes the gap between the plates 21 tightly against the environment.
  • the plates 21 are each provided on their surfaces facing each other with transparent electrodes 14, 16, and between them, the gap is filled by the dielectric layer 15 acted upon by electroluminescent pigment.
  • the shelf 20 is with operating voltage via a (not shown)
  • Connector supplied which cooperates with a complementary connector on the rear wall of the inner container 11. By releasing the connectors, it is easily possible to remove the shelf 20 to clean it, or replace it if necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L'invention concerne un appareil frigorifique dans lequel un élément électroluminescent (4, 7-10) est utilisé comme indication lumineuse d'état de marche ou comme éclairage intérieur.
EP07821520A 2006-10-19 2007-10-18 Appareil frigorifique pourvu d'un moyen lumineux Withdrawn EP2084474A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610049399 DE102006049399A1 (de) 2006-10-19 2006-10-19 Kältegerät mit Leuchtmittel
PCT/EP2007/061155 WO2008046886A2 (fr) 2006-10-19 2007-10-18 Appareil frigorifique pourvu d'un moyen lumineux

Publications (1)

Publication Number Publication Date
EP2084474A2 true EP2084474A2 (fr) 2009-08-05

Family

ID=39244176

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07821520A Withdrawn EP2084474A2 (fr) 2006-10-19 2007-10-18 Appareil frigorifique pourvu d'un moyen lumineux

Country Status (5)

Country Link
EP (1) EP2084474A2 (fr)
CN (1) CN101529186A (fr)
DE (1) DE102006049399A1 (fr)
RU (1) RU2009117298A (fr)
WO (1) WO2008046886A2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009006296U1 (de) * 2009-02-23 2010-07-29 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
DE202009006295U1 (de) * 2009-02-23 2010-07-29 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
ITAN20100047U1 (it) * 2010-07-12 2012-01-13 Antonio Merloni Spa In A S Sistema di illuminazione per frigoriferi
ES2407585B1 (es) 2010-09-15 2014-11-04 Bsh Electrodomésticos España, S.A. Aparato refrigerador
DE102011084458A1 (de) * 2011-10-13 2013-04-18 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät mit mindestens einem Leuchtflächenelement im Behandlungsraum
US9301367B2 (en) 2011-12-19 2016-03-29 Inoviscoat Gmbh Luminous elements with an electroluminescent arrangement and method for producing a luminous element
CN108072221A (zh) * 2017-12-11 2018-05-25 合肥美的电冰箱有限公司 一种用于冰箱的发光搁板组件及冰箱
DE102018210878A1 (de) * 2018-07-03 2020-01-09 BSH Hausgeräte GmbH Haushaltsgerät
DE102019128388B4 (de) * 2019-10-21 2022-01-05 CT-Coating AG Regalsystem zur Ausstellung von Waren, Regalboden für das Regalsystem, Herstellungsverfahren für den Regalboden
CN110793264A (zh) * 2019-12-09 2020-02-14 珠海格力电器股份有限公司 冰箱、变温室结构及变温室结构的控制方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03260587A (ja) 1990-03-09 1991-11-20 Sanyo Electric Co Ltd 冷蔵庫等の庫内照明装置
DE10337327A1 (de) 2003-08-12 2005-03-17 Koch Gmbh & Co. Kg Bedienfeld und Haushaltsgerät
DE10339904A1 (de) * 2003-08-29 2005-03-17 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit OLED-Innenbeleuchtung
DE10345197A1 (de) * 2003-09-29 2005-04-21 Bsh Bosch Siemens Hausgeraete Haushaltgerät mit einer Vorrichtung zur Lieferung von Benutzerinformation und/oder von Umfeldbeleuchtungen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008046886A2 *

Also Published As

Publication number Publication date
CN101529186A (zh) 2009-09-09
RU2009117298A (ru) 2010-11-27
DE102006049399A1 (de) 2008-04-30
WO2008046886A2 (fr) 2008-04-24
WO2008046886A3 (fr) 2008-08-14

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