EP2255138A2 - Appareil réfrigérant à dispositif d'éclairage placé à l'extérieur de l'espace de réfrigération - Google Patents

Appareil réfrigérant à dispositif d'éclairage placé à l'extérieur de l'espace de réfrigération

Info

Publication number
EP2255138A2
EP2255138A2 EP09713366A EP09713366A EP2255138A2 EP 2255138 A2 EP2255138 A2 EP 2255138A2 EP 09713366 A EP09713366 A EP 09713366A EP 09713366 A EP09713366 A EP 09713366A EP 2255138 A2 EP2255138 A2 EP 2255138A2
Authority
EP
European Patent Office
Prior art keywords
light
cooling
emitting diodes
cooling chamber
lighting device
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Withdrawn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
EP09713366A
Other languages
German (de)
English (en)
Inventor
Jessica Pauleickhoff
Daniel Schneider
Thorsten Schütte
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.)
Miele und Cie KG
Original Assignee
Miele und Cie 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 Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP2255138A2 publication Critical patent/EP2255138A2/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Withdrawn legal-status Critical Current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
    • 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
    • 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]

Definitions

  • Refrigerator with a arranged outside the refrigerator lighting device
  • the invention relates to a cooling device with an illumination device arranged outside the cooling chamber, which is arranged in the region of an upper horizontally oriented wall section of the cooling space, wherein the light emitted by a light source is the access opening to the cooling space and / or an extended drawer with essentially vertically downward directed light rays illuminated and wherein the illumination device comprises a group of light-emitting diodes whose light beams forms a fan-like downward expanding beam path.
  • Such a cooling device is known for example from WO 2008/087028 A2.
  • This refrigerator has a cold room with an access opening, which can be closed by a door.
  • the illumination device is arranged in the region of an upper horizontally oriented wall section of the cooling space.
  • the fan-like downward beam path of the light beams is achieved in that the light emitting diodes are arranged at an angle to each other so that they emit light in different directions.
  • DE 697 15 312 T2 discloses a cooling device with a lighting device in which the cooling space has compartments arranged one above the other in an upper section. The compartments are divided by horizontally oriented shelves. Underneath a section with superimposed excerpts is arranged. The lighting means and the reflector of the lighting device are designed such that both the cooling space is illuminated with the shelves arranged one above the other and also an extended drawer of the lower cooling space portion is illuminated by a vertically directed light beam.
  • the lighting device according to DE 697 15 312 T2 may be due to the
  • Forming the bulb with a specially adapted to the cooling chamber geometry reflector can not be arranged to save space.
  • For freezers is often only a narrow gap for the arrangement of a lighting device outside the refrigerator available.
  • bulbs with high heat dissipation to the environment are unsuitable for the arrangement in a narrow gap.
  • a beverage maker with a lighting device which has a light source disposed inside the body and a light guide, wherein the light emitted by the light source is bundled bundled guided by light guide in the beverage dispensing area and illuminated.
  • the light guide is designed for this purpose with a specially designed light extraction surface. With such an arrangement, a special lighting effect is to be generated only in the beverage dispensing area.
  • This lighting device is not suitable for the illumination of the access opening and / or an extended Gefgutauszugs, since with this arrangement no homogeneous illumination across the width of the access opening to the refrigerator can be achieved.
  • a lighting device with an LED arrangement as a light source and a prismatic disk arranged in the emission direction is known as a light-guiding element, by means of which a controlled light pattern with respect to a defined intensity and shape can be produced.
  • such a lighting device is not suitable for installation in the region of the control panel of a refrigerator for illuminating the access opening of the cold room or an extracted frozen goods extension.
  • the invention thus raises the problem of designing a refrigerator with a space-saving to be arranged outside the refrigerator lighting device with which the area of the access opening and / or a frozen goods can be optimally illuminated.
  • the light source preferably LEDs are used, which are maintenance-free and particularly space-saving to arrange and a small
  • the illumination device By forming the illumination device with a light-guiding element having an optical structure, the light radiation can form a fan-like, downwardly widened beam path.
  • the illumination device preferably has a first and a second group of light-emitting diodes with light guides whose light-emitting sites have differently inclined surfaces have, whereby the light is emitted fan-like over the refrigerator width.
  • the angles of inclination of the light coupling surfaces are preferably designed differently, so that the beam region of the first group generates approximately vertically aligned light beams and the beam region of the second group illuminates the lateral edge region of the cooling chamber opening.
  • the light coupling surfaces of the light guides of a group are arranged mirror-symmetrically to each other. They are arranged at different distances x1 and x2 to the symmetry axis of the illumination device, wherein the distances x1 and x2, respectively, determines the respective fan width of the light radiation.
  • the illumination device has a diffusing screen with a multiplicity of adjacently arranged prisms of different angles of inclination, as a result of which the light radiation is likewise deflected in a fan-like manner downward widening over the cooling chamber width.
  • the first and second group of LEDs diffuser sections with different angles of inclination of
  • the inclination angles are formed starting from a value ⁇ 1 in the region of the first group of light-emitting diodes in the center of the illumination device to a value ⁇ 2 rising.
  • the inclination angles are preferably linearly increasing.
  • Lighting devices arranged at a distance from one another in the region of the upper horizontally oriented wall portion of the cooling space.
  • the lighting devices are arranged symmetrically to each other, whereby the access opening is homogeneously illuminated. Another advantageous light effect is achieved by superposition of the fan-shaped beams of the two lighting devices.
  • FIG. 3 shows an enlarged detail of the Fresnel structure
  • FIG. 4 shows the illumination device 1 according to FIG. 2 in a side view in section
  • FIG. 5 schematically shows the arrangement of the illumination device 1 in a cooling device in a side view
  • Figure 6 shows schematically the arrangement of the illumination device 1, hidden by the door 13, in a cooling device in the side view
  • Figure 7 schematically a cooling device with the door open 13 and a solid
  • FIG. 8 shows a cooling device in the front view with two illumination devices 1 arranged symmetrically to each other.
  • the lighting device 1 shown in the installed position in the front view in section.
  • the lighting device 1 comprises in the case shown here
  • Embodiment 10 four light-emitting diodes 2, which are mounted on a printed circuit board 3 and the light-emitting diodes 2 associated prisms 4.
  • the light-emitting diodes 2 are positioned by means of cylindrical guides on the prisms 4.
  • the prisms 4 are fixed on the printed circuit board 3 via a common plastic component 5.
  • the prisms 4 form with the plastic component 5, a light guide with optical structure.
  • the LEDs 2 are arranged mirror-symmetrically to the i 5 axis of symmetry 7 of the illumination device 1.
  • a first group of light-emitting diodes 2 ' is arranged at a distance x1 with the respectively associated prisms 4 to the axis of symmetry 7 of the illumination device 1.
  • the light coupling surfaces 8 of the prisms 4 lie in an imaginary plane, which form an angle ⁇ with the longitudinal axis 9 of the prisms 4.
  • the light emitting diodes 2 'associated prisms 4 break that
  • a second group of light-emitting diodes 2 " is arranged at a distance x2 with the respectively associated prisms 4 to the symmetry axis 7 of the illumination device 1.
  • the light coupling surfaces 8 of this group are arranged at an angle ⁇ different from the angle ⁇ relative to the longitudinal axis 9. The smaller inclination angle ⁇ becomes achieved that the light rays. 6
  • the angle ⁇ is about 55 ° and the angle ß about 84 °.
  • FIG. 2 shows variant 2 of the illumination device 1 with a diffusing screen 11 as a light-guiding element which, on the side facing the light source or the light-emitting diodes 2, has a side
  • the inclined surfaces of the Fresnel structure are each mirror-symmetrically aligned with the axis of symmetry 7 of the illumination device 1.
  • the angular range of the Fresnel structure is continuously increasing starting from an initial value ⁇ 1 (approximately 14 °) up to a final value ⁇ 2 (approximately 35 °).
  • Figure 3 shows an enlarged
  • the optical effect of the Fresnell MUST is achieved in an embodiment, not shown, even if the structure is formed on the refrigerator side facing the lens 11.
  • Figure 4 shows the structural design of the lighting device according to Figure 2 or 3 in the side view in section. The line of intersection runs through the symmetry axis 7 in this illustration.
  • the illumination device 1 has a transparent plastic component 5 which has the lens 11 at an L-shaped section. On the opposite side, the plastic component 5 is fixed to the printed circuit board 3 via a holding section. In installation position in the refrigerator only the lens 11 of the lighting device 1 from the bottom of the wall portion 12 (indicated here only by lines) visible.
  • Figure 5 shows schematically the arrangement of the lighting device 1 outside the cooling chamber 10 of the cooling device in the side view in section.
  • the lighting device 1 is preferably arranged in the region of an upper horizontally oriented wall section 12 of the cooling space 10 in the region of the control and operating unit (not shown) of the cooling device.
  • the wall section 12 with the integrated lighting device 1 is not covered by the refrigerator door 13.
  • the area with the integrated lighting device 1 is covered by the refrigerator door 13.
  • Figure 7 shows schematically a cooling device with the door open and an extended drawer compartment 14 for frozen food and the schematically illustrated lighting effect of lighting in the side view in section.
  • the frozen food compartment 14 is illuminated by substantially vertically downwardly directed light beams 6.
  • FIG. 8 shows a cooling device in the front view with two illumination devices 1 arranged symmetrically to one another.
  • the light beams 6 'of the first group of light emitting diodes 2 ' can be directed essentially vertically downwards, depending on the angle of inclination of the associated light coupling surfaces or, as in the exemplary embodiment shown, easily form extended beam path.
  • the light beams 6 "of the second group of light-emitting diodes 2 " form a wider fan-like beam path with respect to the first group. This also illuminates the lateral edge area of the access opening and the center. With this arrangement, a particularly homogeneous illumination over the entire width of the refrigerator compartment 10 or freezer 14 is achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

L'invention concerne un appareil réfrigérant comprenant un dispositif d'éclairage placé à l'extérieur de l'espace de réfrigération. Le dispositif d'éclairage est placé dans la zone d'une section de paroi supérieure horizontale de l'espace de réfrigération, la lumière émise par la source lumineuse éclairant l'ouverture d'accès à l'espace de réfrigération et/ou un tiroir ouvert grâce à des rayons lumineux orientés pratiquement verticalement vers le bas. L'invention vise à créer un appareil réfrigérant muni d'un dispositif d'éclairage (1) que l'on place à l'extérieur de l'espace de réfrigération pour économiser de la place mais qui éclaire de manière optimale la zone de l'ouverture d'accès et/ou un tiroir contenant des produit à refroidir. A cet effet, le dispositif d'éclairage (1) comprend comme source lumineuse un groupe de diodes électroluminescentes (2) qui sont placées côte à côte et auxquelles est associé, dans le sens du rayonnement, un élément guide de lumière ayant une structure optique telle que la trajectoire du rayonnement lumineux s'élargit en éventail vers le bas.
EP09713366A 2008-02-19 2009-02-13 Appareil réfrigérant à dispositif d'éclairage placé à l'extérieur de l'espace de réfrigération Withdrawn EP2255138A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008009862.0A DE102008009862B4 (de) 2008-02-19 2008-02-19 Kühlgerät mit einer außerhalb des Kühlraumes angeordneten Beleuchtungseinrichtung
PCT/EP2009/001013 WO2009103458A2 (fr) 2008-02-19 2009-02-13 Appareil réfrigérant à dispositif d'éclairage placé à l'extérieur de l'espace de réfrigération

Publications (1)

Publication Number Publication Date
EP2255138A2 true EP2255138A2 (fr) 2010-12-01

Family

ID=40935995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09713366A Withdrawn EP2255138A2 (fr) 2008-02-19 2009-02-13 Appareil réfrigérant à dispositif d'éclairage placé à l'extérieur de l'espace de réfrigération

Country Status (3)

Country Link
EP (1) EP2255138A2 (fr)
DE (1) DE102008009862B4 (fr)
WO (1) WO2009103458A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509563B1 (de) * 2010-03-01 2015-10-15 Hierzer Andreas Leuchte mit lichtausrichtungselementen
EP2394557B1 (fr) * 2010-03-18 2013-05-08 Miele & Cie. KG Lave-vaisselle doté d'un système d'éclairage
US8876314B2 (en) 2010-06-28 2014-11-04 Hefei Midea Rongshida Refrigerator Co., Ltd. Drawer-type refrigerator with a lighting device
DE102015004825A1 (de) * 2014-12-30 2016-06-30 Liebherr-Hausgeräte Lienz Gmbh Kühl- und/oder Gefriergerät
DE102017130793A1 (de) * 2017-11-20 2019-05-23 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
EP3869133B1 (fr) * 2020-02-21 2023-07-19 Liebherr-Hausgeräte Ochsenhausen GmbH Réfrigérateur et/ou congélateur pourvu d'un éclairage intérieur spécial

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Publication number Priority date Publication date Assignee Title
DE3238152C1 (de) * 1982-10-14 1986-12-04 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Kühlgerät, insbesondere Kühl- oder Gefrierschrank
SE503306C2 (sv) * 1994-03-16 1996-05-13 Itab Ind Ab Belysningsanordning
SE506827C2 (sv) * 1996-06-14 1998-02-16 Electrolux Ab Belysningsanordning vid ett kyl- eller frysskåp
DE29715157U1 (de) * 1997-08-23 1998-01-15 Fischer, Fritz-Udo, 56244 Ötzingen Infrarotfreies und ultraviolettfreies, weißes Licht diffus abstrahlende Arbeitsleuchte
SE511216C2 (sv) * 1997-12-30 1999-08-23 Itab Neon Ab Belysningsanordning med lysdioder
TW457732B (en) * 1999-08-27 2001-10-01 Lumileds Lighting Bv Luminaire, optical element and method of illuminating an object
DE10210161B4 (de) * 2002-03-07 2004-01-08 Miele & Cie. Kg Getränkebereiter, insbesondere Kaffeemaschine
DE20204102U1 (de) * 2002-03-13 2002-07-04 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Leuchte mit Lichtleiter und mehreren Lichtquellen
JP4360945B2 (ja) * 2004-03-10 2009-11-11 シチズン電子株式会社 照明装置
US8297801B2 (en) * 2004-07-16 2012-10-30 Osram Sylvania Inc. Light emitting diode disc optic with heat sink housing
DE202005011279U1 (de) * 2005-05-04 2006-09-07 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und Gefriergerät
DE202007002350U1 (de) * 2007-01-19 2008-05-29 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Non-Patent Citations (1)

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Title
See references of WO2009103458A2 *

Also Published As

Publication number Publication date
WO2009103458A2 (fr) 2009-08-27
WO2009103458A3 (fr) 2009-11-12
DE102008009862B4 (de) 2015-12-17
DE102008009862A1 (de) 2009-09-10

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