EP2708838B1 - Concept d'éclairage pour meubles de refroidissement - Google Patents

Concept d'éclairage pour meubles de refroidissement Download PDF

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Publication number
EP2708838B1
EP2708838B1 EP13185062.0A EP13185062A EP2708838B1 EP 2708838 B1 EP2708838 B1 EP 2708838B1 EP 13185062 A EP13185062 A EP 13185062A EP 2708838 B1 EP2708838 B1 EP 2708838B1
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EP
European Patent Office
Prior art keywords
light
lamp
refrigeration equipment
und
der
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
EP13185062.0A
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German (de)
English (en)
Other versions
EP2708838A2 (fr
EP2708838A3 (fr
Inventor
Klaus Wammes
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.)
As2 Alternative Solutions GmbH
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As2 Alternative Solutions GmbH
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Publication of EP2708838A3 publication Critical patent/EP2708838A3/fr
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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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F11/00—Arrangements in shop windows, shop floors or show cases
    • A47F11/06—Means for bringing about special optical effects
    • A47F11/10—Arrangements of light sources
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/001—Devices for lighting, humidifying, heating, ventilation
    • 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
    • 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
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/405—Lighting for industrial, commercial, recreational or military use for shop-windows or displays
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • 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 lighting concept for refrigerated cabinets under the premise of an attractive presentation of the presented goods for customers of all ages - taking into account the optimization for the age group 40+.
  • this concept should be based on the most efficient possible use of electrical energy - and should demonstrate the simplest possible manufacturability at reduced costs.
  • US 2005/265019 A1 discloses the preamble of claim 1 and shows a lamp arrangement with lambertician Abstrahlungs characterizing.
  • the German utility model DE 20 2008 006 500 U1 shows a refrigerated cabinet with an illuminated by a gas discharge lamp optical fiber, which is laid along the edge of a shelf and emits light in this area.
  • a similar lighting solution for refrigerated cabinets is in JP 2008-98022 A disclosed.
  • Lighting concept that avoids the disadvantages mentioned and instead allows glare-free viewing of goods in commercial refrigerators by the customer / viewer with high and largely independent of the viewing position color contrast with low energy consumption and long life of the bulb. Another task is to reduce the heat introduced in the cold room.
  • e3 plasma lamp from the company Global LightZ from the Wammes and Partner group of companies is planned as the light source.
  • the e3 lamps belong to the family of low-pressure discharge lamps. They typically consist of about 3 mm thin glass tubes - embedded in metal or glass ceramic body, which are mechanically machinable and therefore also deformable. Most of these bulbs are internally coated with doped ceramics. They also carry a so-called getter, an active material that serves to keep the inner volume of the e3 glass tubes clean for as long as possible. In addition, a special noble gas mixture with an internal pressure between about 2 mbar and 0.7 bar is used.
  • the lamps can also contain powerful multi-band phosphors, which also make individual red, green and / or blue-emitting lamps possible. These are used to create or correct the desired light spectrum. By default, the e3 bulbs are operated with 24 V DC.
  • the complex operating principle of the e3 technology is based on the ionization of vaporized or gaseous particles for the controlled, temporarily stable cluster formation and is thus a more energy efficient and qualitatively improved development of the long known fluorescent tubes, which allows higher light yields with the same power consumption and lower volume.
  • short-term stable clusters exciplexes
  • two or more atoms or molecules are formed, which generate ultraviolet, visible and / or infrared light in the excited state.
  • a suitable combination of these results in the desired light spectrum (the light color).
  • the plasma processes still generate a small amount of extremely long-wave light, which is needed to control and control the entire system.
  • e3 lamps can be operated at ambient temperatures of -35 C or less to well over +100 ° C.
  • the e3 tube radiates lambertically from any point of its line shape. This particularly important advantage in the present context will be explained in more detail below.
  • the minimum CRI (Color Rendering Index) of the e3 tubes is> 80. Its good CRI retains e3 light at any light temperature. This is particularly advantageous because the latest generation of e3 tubes, the so-called "V-Light", is infinitely variable between 2,000 K and 10,000 K color temperature.
  • the required control electronics are already integrated in the light source and can be addressed by means of buttons or other setting elements.
  • e3 tubes Compared to current LED products, e3 tubes have three major practical advantages in terms of light color: First, all light temperatures can be realized with a single light source, while LEDs always require a mosaic of different colored diodes. Secondly, once the light temperature is set, e3 light sources remain permanently color-stable. Third, because e3 tubes emit very little heat to surrounding components, they can be installed without heat sinks, which also has a positive impact on the eco-balance and is particularly advantageous for use in refrigerated cabinets.
  • FIG. 1 Here is a cross-section through a freezer as an example of a refrigerator 2 with stored therein for cooling goods 4 and with optional transparent cover 6 is shown.
  • the observer 8 stands in front of the refrigeration unit 2 and looks in a viewing angle area 10 at the goods 4 in the interior, which are illuminated by the illuminant 12.
  • the lamp 12 is a rod-shaped, elongated e 3 -Plasmapository, which is arranged offset parallel to the front upper longitudinal edge 14 of the cabinet 2, slightly offset from the interior of the cabinet 2.
  • the light rays, which are partially incident directly and partly by reflection, for example at the reflectors 16 or also at other sections of the inner wall, on the goods 4 are indicated by arrows (the reflection on the goods 4 has been omitted to simplify the drawing).
  • the light extraction is advantageously divided into a vertically narrow collimated segment (depending on the depth of the device, for example, 25 degrees to the horizontal -5 / + 10 degrees) and a vertically low-collimated segment (about 130 degrees +/- 25 degrees).
  • the light propagation of the selected e 3 plasma light sources is NOT changed, because the intrinsically predetermined characteristic - light rays are emitted from each point of the linear light source in EVERY solid angle outside the very thin light source - results in a very uniform, glare- and largely shadow-free illumination.
  • e3 plasma lamps are elongated, quasi-line-shaped light emitters with - to a very good approximation - Lambertian radiation characteristics.
  • Light sources which have no directional dependence of the radiation density are known as diffuse radiators or lambertian radiators. They emit the same radiation density in all directions. Due to a perspective effect, the radiation power or intensity output by them in a specific direction or a specific solid angle range only varies with the cosine of the emission angle relative to the surface normal of the light-emitting surface element (Lambert's cosine law). Accordingly, in the polar coordinate diagram, there is a circular intensity curve for each possible orientation (i.e., every possible azimuth angle) of the measurement plane containing the surface normal.
  • the opposite wall of the light source is advantageously mechanically / optically formed so that it is reflective on the one hand and the second reflected the direction of the reflected light rays back into the interior of the device that there ideally to the present goods ever presented individual product to each product as evenly as possible semi-cylindrical luminous intensity distribution forms.
  • the light source, the significantly reduced interference, the optical design of the lens and reflector, and the described positioning of the light source including all indirect (glass, presented goods, fixtures, etc.) and immediate (default) reflectors achieved that the color representation DRAMATICALLY better - and thus the attractiveness of the presented goods is increasing - for all observers.
  • the electrical power used was for the LED lighting ( FIG. 4 ) normalized to 100%.
  • 130% were measured, which is within the expected range.
  • the e3 lighting ( FIG. 3 ) only 50% needed. This means, in particular, a significantly lower waste heat, which must be dissipated by the cooling units.
  • the concept can generally be characterized as follows: Since the radiation intensity of a light beam propagating three-dimensionally in the space decreases in the square to the linear distance, in the illumination of a refrigerator / freezer / volume only from one side would a very strong brightness decrease from the light source over the goods to be presented on the opposite side take place.
  • a solution is now provided in order to use a light source on only one side, preferably on the side closest to the customer, and nevertheless to realize the illumination equally well or better than the previous two-sided illumination.
  • the amount of light emitted by a light source on a long side of the refrigerator is divided by suitable optics (lenses and / or reflectors) and a part in a known manner in a relatively large propagation angle in the internal volume of the Cooling unit emitted.
  • the second (or generally nth) part of the divided amount of light is now also bundled so much by suitable optics (lenses and / or reflectors), that the propagation angle is now only a fraction of the propagation angle of the first light component.
  • the distribution of the original amount of light can be made in more than two subsets on the same principle to z. B. to take into account a particular contour of the volume to be illuminated and / or a particular area within this volume particularly emphasize or reduce.
  • FIG. 6 Namely, a perspective view of a commercial glass door refrigerator 20 is shown in a vertical construction.
  • the cuboid cooling space 22 is enclosed laterally and at the rear by three fixed enclosure walls.
  • the cooling space 22 can be closed by a hinged door 24 (alternatively a sliding door or the like) which is hinged on the right longitudinal side and provided with a large-area glass window within the door frame.
  • a hinged door 24 alternatively a sliding door or the like
  • the drawn coordinate system defines the three spatial directions x, y, z.
  • a schematic cross section through the refrigerator 20 according to FIG. 7 illustrates the lighting concept. Namely, it is only on one of the two longitudinal sides an extended in the z direction lighting rail 26 provided with at least one light source, which is in the vicinity of the door opening in the corresponding side wall 28, here the left, integrated.
  • a first light bundle 34 emanating from the light rail 26 is emitted in the xy plane in the direction of the opposite side wall 30 and the rear wall 32 at an exit angle of at least 70 °, preferably about 90 °, at most 180 °, to a reasonably uniform volume illumination to obtain.
  • a second light bundle 36 emanating from the same light rail 26 is focused much more strongly in the xy plane, for example with an exit angle of a few degrees, preferably less than 20 °, particularly preferably less than 10 °, and at the front of the stored chilled goods (not here drawn) past on the light rail 26 opposite side wall 32 is directed and diffused from there from and / or with the aid of an (optional) reflector 38 into the cooling chamber 22 / reflected.
  • a corresponding light rail 26 can be arranged on one of the two transverse sides of the engagement opening in the cooling space 22.
  • a simple method to realize this division of the amounts of light is to construct a luminaire arrangement of lamp 40, reflector 42 and (collecting) lens 44 so that alone by positioning the bulbs contained therein 40 for each of the bulbs 40 positioned there other optical transmission function results in order to be able to decouple the light components in predetermined different solid angles.
  • This is exemplary and schematically in a cross section through such a luminaire arrangement according to FIG. 8th illustrated. It is also conceivable to equip the luminous means 40 itself with a corresponding radiation characteristic or in combination with additional reflector and / or lens geometry to achieve the desired resulting radiation characteristic.
  • the entire arrangement is preferably translation-invariant in the z-direction over a substantial extension length compared to the overall height of the refrigerator, and thus has substantially the same cross-sectional geometry everywhere with respect to the optical components.

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  • 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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Claims (4)

  1. Meuble réfrigérant (2, 20), en particulier congélateur bahut, comptoir réfrigérant, table réfrigérante, réfrigérateur ou similaire, ayant une ouverture d'enlèvement menant dans l'espace réfrigérant (22) et limitée par au moins deux parois latérales (28, 30) opposées et ayant une lampe (12, 40) intégrée pour éclairer des marchandises (4) gardées dans le meuble réfrigérant (2, 20), la lampe (12, 40) possédant à chaque point une caractéristique de rayonnement approximativement selon la loi de Lambert,
    caractérisé en ce que
    la lampe (12, 40) a une forme approximativement linéaire et en ce que la lampe (12, 40) est une composante d'un arrangement de lampes intégré dans l'une des deux parois latérales (p. ex. 28), qui additionnellement comprend un réflecteur (38) et/or une lentille (44), de façon qu'un premier faisceau lumineux (34) ayant un angle de divergence relativement large, plus large de 70°, est rayonné principalement dans l'espace réfrigérant (22) et un second faisceau lumineux (36) ayant un angle de divergence considérablement plus petit est rayonné, dans une région marginale de l'espace réfrigérant (22) qui est adjacent à l'ouverture d'enlèvement, vers l'autre paroi latérale (p. ex. 30) et est réfléchi là diffusément ou à l'aide d'un réflecteur (38), dans l'espace réfrigérant (22).
  2. Meuble réfrigérant (2) selon la revendication 1, dans lequel la lampe (12, 40) est une lampe à plasma.
  3. Meuble réfrigérant (2, 20) selon la revendication 1 ou 2, dans lequel il n'y a pas de lampe dans l'autre paroi latérale (p. ex. 30).
  4. Meuble réfrigérant (2, 20) selon l'une quelconque des revendications 1 à 3 sous forme d'un réfrigérateur de construction verticale, ayant une porte battante ou une porte coulissante (24) comprenant une fenêtre d'inspection transparente, pour fermer l'ouverture d'enlèvement.
EP13185062.0A 2012-09-18 2013-09-18 Concept d'éclairage pour meubles de refroidissement Active EP2708838B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012216633.5A DE102012216633A1 (de) 2012-09-18 2012-09-18 Beleuchtungskonzept für Kühlmöbel

Publications (3)

Publication Number Publication Date
EP2708838A2 EP2708838A2 (fr) 2014-03-19
EP2708838A3 EP2708838A3 (fr) 2016-04-20
EP2708838B1 true EP2708838B1 (fr) 2019-01-16

Family

ID=49293437

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Application Number Title Priority Date Filing Date
EP13185062.0A Active EP2708838B1 (fr) 2012-09-18 2013-09-18 Concept d'éclairage pour meubles de refroidissement

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EP (1) EP2708838B1 (fr)
DE (1) DE102012216633A1 (fr)
ES (1) ES2720901T3 (fr)
PT (1) PT2708838T (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018003584B4 (de) * 2018-05-03 2021-02-25 Emz-Hanauer Gmbh & Co. Kgaa Haushalts-Kühlgerät mit einer Wandleuchte

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050265019A1 (en) * 2004-05-26 2005-12-01 Gelcore Llc LED lighting systems for product display cases
JP2006162211A (ja) * 2004-12-10 2006-06-22 Toshiba Corp 冷蔵庫
JP2010084987A (ja) * 2008-09-30 2010-04-15 Sanyo Electric Co Ltd ショーケース

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US514170A (en) * 1894-02-06 N. Tesla Incandescent electric light
JPH1083710A (ja) * 1996-09-06 1998-03-31 Matsushita Electric Ind Co Ltd 冷蔵庫
US6179443B1 (en) * 1998-06-30 2001-01-30 Commercial Refrigerator Door Company, Inc. Fluorescent lamp lens assembly
DE202007005692U1 (de) * 2006-08-24 2007-09-13 BÄ*RO GmbH & Co. KG Leuchte zur Erzeugung eines länglichen Lichtbildes
JP2008098022A (ja) * 2006-10-13 2008-04-24 Ushio Inc 二重管型希ガス放電ランプ
JP5186875B2 (ja) * 2007-10-12 2013-04-24 日亜化学工業株式会社 照明ユニット
DE202008006500U1 (de) * 2008-02-23 2008-07-24 Dg Licht Handels-Gmbh & Co. Kg Leuchtmittel für Kühlmöbel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050265019A1 (en) * 2004-05-26 2005-12-01 Gelcore Llc LED lighting systems for product display cases
JP2006162211A (ja) * 2004-12-10 2006-06-22 Toshiba Corp 冷蔵庫
JP2010084987A (ja) * 2008-09-30 2010-04-15 Sanyo Electric Co Ltd ショーケース

Also Published As

Publication number Publication date
EP2708838A2 (fr) 2014-03-19
EP2708838A3 (fr) 2016-04-20
PT2708838T (pt) 2019-05-16
DE102012216633A1 (de) 2014-03-20
ES2720901T3 (es) 2019-07-25

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