WO2010122154A1 - Éclairage par del pour meubles de vente réfrigérés - Google Patents

Éclairage par del pour meubles de vente réfrigérés Download PDF

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Publication number
WO2010122154A1
WO2010122154A1 PCT/EP2010/055457 EP2010055457W WO2010122154A1 WO 2010122154 A1 WO2010122154 A1 WO 2010122154A1 EP 2010055457 W EP2010055457 W EP 2010055457W WO 2010122154 A1 WO2010122154 A1 WO 2010122154A1
Authority
WO
WIPO (PCT)
Prior art keywords
led
led lighting
leds
light
lighting according
Prior art date
Application number
PCT/EP2010/055457
Other languages
German (de)
English (en)
Inventor
Christian Derkits
Christoph Platzer
Original Assignee
Ledon Lighting Jennersdorf 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 Ledon Lighting Jennersdorf Gmbh filed Critical Ledon Lighting Jennersdorf Gmbh
Priority to EP10716819.7A priority Critical patent/EP2421414B1/fr
Priority to DE112010001717T priority patent/DE112010001717A5/de
Publication of WO2010122154A1 publication Critical patent/WO2010122154A1/fr

Links

Classifications

    • 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
    • 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
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0482—Details common to both closed and open types
    • 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
    • F25D27/005—Lighting arrangements combined with control means
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • 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
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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
    • 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
    • F25D2327/00—Lighting arrangements not provided for in other groups of this subclass
    • F25D2327/001—Lighting arrangements on the external side of the refrigerator, freezer or cooling box
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/06—Sensors detecting the presence of a product
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/008—Alarm devices

Definitions

  • the invention relates to the use of LED-based lighting in the field of refrigerated display cabinets, i. Refrigerated shelves, in particular multi-storey refrigerated shelves according to the preamble of patent claim 1.
  • EP 083 7439 A2 shows an electronic price tag with an LED illumination.
  • the LED lighting is located on the front of the price tag and has the task of alerting the customer to the price tag.
  • the price tag may also include a button in which the LED may be located. An employee can manually activate an LED by pressing the key. Alternatively, a central control unit can automatically turn on and off the LED lighting.
  • US 2008 0062 680 A1 shows an LED module that can be used as a direct replacement of a fluorescent tube.
  • the module has all the necessary electrical components. These are in particular components for the correct control of the LEDs.
  • the module has conventional fluorescent tube connections. It is used a variety of LEDs, which are mounted close to each other in the tubes and have different beam angles.
  • WO 2006/126114 A1 shows an indirect lighting system for an object, such as a shelf.
  • the lighting system is a linear array of LEDs.
  • a complex shaped reflector is arranged so as to direct or reflect light emitted from the LEDs m in a direction away from the object and towards the reflector in a homogeneous manner onto the object, so that the object can only pass through indirect lighting is illuminated.
  • the complex reflector achieves a concentration of light rays. This light concentration is aligned so that the light reflected by the reflector emits light through a narrow slit on the shelf. Because of the LEDs directed away from the object to be illuminated and the complex reflector to be aligned, the production of the illumination system and its retrofitting in an object, such as a shelf, is very expensive.
  • red, green, and / or blue LEDs can be used to produce monochromatic, white, or other colored, mixed light.
  • the LED may be provided with a photoluminescent material disposed over the LED chip, such as fluorescent dye or phosphor (for example, YAG, BOSE) be provided, by means of which the light emitted by the LED chip and the light converted in the photoluminescent material light are mixed together so that any desired color or white light (eg. By means of blue LED ) can be generated. It is also possible any combination of the aforementioned LEDs in the LED lighting.
  • the invention relates to an LED lighting for the field of refrigerated display cabinets, in particular of refrigerated shelves.
  • it has a plurality of LEDs for illuminating the sales furniture.
  • at least a part of the LEDs of the LED lighting as at least one linear LED unit, for example as a wall washer ("Wall Washer") is formed, and the at least one linear LED unit in the upper part of the refrigerated display cabinets
  • the linear LED unit is preferably limited in its radiation characteristic to a certain angle and can be an asymmetric Have light distribution.
  • the asymmetric radiation characteristic of the linear LED unit can be realized by means of an asymmetrical lens designed for this purpose.
  • the particular angle preferably has 30 °.
  • the light intensity distribution is preferably asymmetric in that more light is emitted to the lower chiller shelves further away from the upper chiller shelves closer to the linear LED unit.
  • the invention relates to an LED lighting for refrigerated display cabinets, in particular of refrigerators, which has a plurality of LEDs (4,9) for illuminating the display cabinets. It is further characterized in that at least a part of the LEDs of the LED lighting as at least one linear LED unit, for example as a wall washer, is formed, which is mounted in a horizontal and / or vertical plane decentralized, preferably at the edge, in the display cabinet, and generates an even spatial light intensity distribution via an asymmetrical light intensity distribution.
  • the asymmetrical radiation characteristic of the linear LED unit can be realized by means of an asymmetrical lens designed for this purpose.
  • the light intensity distribution is preferably asymmetrical in that light is intensified on the areas of the
  • the lens comprises: at least one far-range directing surface, by means of which the light with respect to the linear LED unit in a distant
  • Area is directed, and at least one near-field-guiding surface, by means of which the light with respect to the linear LED unit in a closer
  • different areas of the lens are assigned LEDs with different light intensity and / or color.
  • each individual area of the display cabinet can be illuminated individually, while maintaining a homogeneous lighting.
  • the color characteristic of the linear LED unit can be adjustable, in particular as a function of the present product groups.
  • the linear LED unit is embodied asymmetrically in terms of its emission characteristic horizontally and / or vertically with respect to its color characteristic.
  • the LED lighting preferably has a high color rendering index in order to make the typical printings of the packages of the goods present in the cooling rack appear brilliant. Especially in combination with a color adapted to the various product groups offered in the display, it is thus possible to create a consumer-friendly lighting.
  • the Kuhlregal preferably serves as a heat sink for the LED lighting.
  • the sales spatula may be designed as a refrigerator.
  • the LED unit is preferably attached to the inside of the door frame of the refrigerator.
  • the invention relates to LED modules, which consist of at least part of the LEDs of the LED lighting.
  • the LED modules are integrated into the price tags of the sales car, with the price tags attached to the refrigerated sales implements.
  • the LED modules integrated into the price tags are each assigned to one level of the cooling rack.
  • the high-intensity distribution of the LED modules can be asymmetric in that more light is emitted to the products located further away in the respective cooling rack in comparison to products which are located closer to the LED modules.
  • the color characteristic of the LED modules can be adjustable, in particular depending on the present product groups.
  • the LED modules have an asymmetrical color characteristic in their radiation characteristic horizontally and / or vertically, so that different groups of goods can be irradiated with light of different color.
  • the price tags may be electronic price tags, for example LCD based.
  • the electronic price tags can be controlled centrally.
  • At least part of the emitted light of the LED modules shines away from the display cabinet. In this way, attention can be drawn to the price tags.
  • the price tags can therefore be highlighted for special offers or for a specific customer behavior, for example by means of the separate LED of the LED module.
  • the LED lighting preferably has a central control unit and a sensor, wherein the sensor monitors the goods level of the display cabinet and reports to the central control unit when the level is empty.
  • the invention relates to a system comprising at least one LED illumination as described above.
  • FIG. 3 shows an LED unit comprising the lens shown in FIG. 2, FIG.
  • Fig. 6 shows a further exemplary embodiment of an inventive LED arrangement in a refrigerator
  • Fig. 7 is a schematic representation of a
  • Fig. 1 an exemplary embodiment of an inventive LED arrangement is shown. This is in attached to a Kuhlregal 1.
  • the Kuhlregal has five floors, which are realized by the insertion of four trays 2.
  • the Kuhlregal is limited by a cover 7.
  • a linear LED unit 3 is attached.
  • the latter may be a so-called wall washer ("wall washer").
  • the linear LED unit has a plurality of LEDs 4. These are arranged horizontally along the front of the shelf. It is also possible to place LEDs side by side, as in this exemplary embodiment, three are indicated next to one another in order to increase the intensity and / or the beam angle.
  • the LEDs may have different colors, preferably red, green and blue or blue and red. As a result, monochromatic light or even a very wide range of color spectra can be achieved by mixing the emitted light with suitable means, for example with a diffusing screen.
  • the LED may be provided with a photoluminescent material disposed over the LED chip, such as fluorescent dye or phosphor (eg, YAG, BOSE). By means of this phosphor layer, the light emitted by the LED chip and the light converted in the photoluminescent material can be mixed with each other so that any desired color or white light (for example by means of blue LED) can be produced.
  • a photoluminescent material disposed over the LED chip, such as fluorescent dye or phosphor (eg, YAG, BOSE).
  • Erfmdungsgeolin is therefore conceivable every conceivable combination of LEDs in the LED lighting.
  • the linear LED unit is in its emission characteristics: limited to a certain angle, for example 30 °. Thus, the light is completely bundled on the goods offered and achieved a high lighting efficiency.
  • an asymmetrical distribution of light intensity ensures uniform lighting of the goods on all floors. Namely, there is an increased light emitted to the lower lower refrigerated shelves in comparison with the upper refrigerated shelves, which are closer to the linear LED unit. This is symbolized here by the length of the arrows 6, the length representing the intensity of light.
  • an asymmetrical lens 20 m beam direction can be placed in front of the LED lighting.
  • a cross section of such a lens 20 is shown by way of example in FIG.
  • the lens 20 is made of a clear, clear or matt, colorless or colored material.
  • the lens 20 is made of glass, but preferably of plastic, such as polymethylmethacrylate (PMMA).
  • the lens 20 is placed in front of the LED unit 3 in such a way that the latter is in the lower one shown in FIG Recess is arranged and radiates in the direction of the lens 20.
  • three LEDs eg RGB LEDs
  • the lens 20 preferably has a far-range-directing surface 21 and a near-area-directing surface 22.
  • the far-range directing surface 21 By means of the far-range directing surface 21, the light is directed into a further away from the LED unit 3 away, so more distant area. 2, the far-range directing surface 21 is preferably located in a left or right (in relation to a cross section of the lens 20 transversely to its longitudinal extent, see, for example, Fig. 3) upper portion. It is preferably designed according to the desired emission direction and light intensity, preferably angled accordingly.
  • the near-area-directing surface 22 By means of the near-area-directing surface 22, the light is directed into a nearer area.
  • the near-surface-directing surface 22 is preferably located in a right or left upper region (as viewed in Fig. 2 transverse to its longitudinal extent, see, e.g., Fig. 3) and is preferably adjacent to the far-range-directing one Surface arranged 21 and is particularly preferably in this over.
  • the near-area-directing surface 22 is preferably designed according to the desired emission direction and light intensity, preferably it has a corresponding convex shape. The light emitted by the LEDs thus falls on the lens 20, more precisely on the far-range directing surface 21 and on the near-field-directing surface 22.
  • the lens 20 Due to the special, asymmetrical configuration of the lens 20, the light is directed to the particular display cabinet or cabinet according to the shape of the lens 20 The goods offered therein are steered. Thus, a high lighting efficiency is achieved. Due to the asymmetrical light intensity distribution, a uniform illumination of the goods in all floors and compartments 2 is also achieved.
  • the lens 20 according to the exemplary embodiment in each case has a far-range-directing surface 21 and a near-area-directing surface 22. These can be designed such that they achieve a high illumination efficiency with uniform illumination in different areas. However, it is also conceivable that the lens 20 has a plurality of far-range-directing surfaces and / or a plurality of near-area-directing surfaces for achieving homogeneous illumination of goods distributed over all floors and also in all areas of the compartments 2.
  • the far-range-directing surface 21 is designed such that it concentrates the light and aligns it in such a way that more distant regions have the same light intensity distribution as the nearer
  • the individual surfaces, ie the far-range-directing surface 21 and / or the near-field-guiding surface 22 may each be assigned different LEDs.
  • an asymmetrical emission characteristic can be achieved by assigning the far-range-directing surface 21 stronger LEDs (ie LEDs with high light intensity) than the near-range-guiding surface 22 (ie LEDs with weaker light intensity). In this way, there is consequently a homogeneous illumination of the goods or compartments 2.
  • FIG. 3 shows the lens 20 shown in FIG. 2 installed in a linear LED unit 3 according to the invention.
  • the LED unit 3 is preferably arranged in a profile or base profile 18.
  • the base profile 18 is preferably thermally connected, for example via a separate cooling plate or on the sales furniture itself to ensure a corresponding heat dissipation.
  • the asymmetrical lens 20 is placed on the base profile 18 and in the emission direction in front of the linearly arranged LEDs.
  • the lens 20 is preferably with the Base profile 18 securely connected by screwing, clamping, a latching mechanism or the like.
  • the lens 20 extends over the entire base profile width and length.
  • the lens 20 may only partially cover the base profile 18 or the LED unit 3 as long as it is at least partially arranged in the emission direction in front of the linearly arranged LEDs. It is also conceivable that the lens 20 is partially asymmetrical and partially symmetrical in the longitudinal direction. Furthermore, the asymmetrical lens profile in the longitudinal direction, ie over the length of the base profile 18 and the LED unit 3 according to the desired radiation characteristic change.
  • different LEDs can also be used over the entire length of the LED unit 3.
  • differently strong (with different light intensity) or differently colored LEDs can be used according to the lens shape to individually achieve homogeneous illumination with freely selectable color characteristics.
  • goods in an upper compartment on the left side can be illuminated differently than other goods on the corresponding left side, and also differently than goods in other areas of the sales cabinet, but homogeneous illumination can be maintained.
  • RGB LEDs the color can also be changed individually at any time.
  • the invention is not limited to a particular combination limited by LEDs to corresponding lens areas both in the longitudinal and in the transverse direction of the LED unit 3.
  • the LED unit 3 with lens 20 and base profile 18 is preferably arranged and fastened at its end faces between two end caps 19.
  • the LED unit 3 between the end caps 19 is pivotable about its longitudinal axis or rotatably arranged. In this case, it can be designed so that by rotating through 180 °, the asymmetric radiation characteristic of the LED unit 3 is mirror-inverted. As a result, an LED unit 3 can be used by simply turning both left and right as well as up and down in the display cabinet.
  • the base profile 18 is rigidly connected to the end caps 19, and the lens 20 is arranged on the base profile 18 in a pivotable manner. In this way, the LED unit 3 can be aligned by pivoting the unit even after their attachment according to the location.
  • the end caps 19 in turn preferably have a mounting flange 19a, with which the LED unit 3 can be attached.
  • the flange 19a can be snapped into a latching device or holes or holes 19b, preferably elongated holes, in the flange 19a by means of fastening means, such as screws, are attached.
  • the connection cable for the LED unit 3 can be led away from the front or to the rear, preferably via an end cap 19.
  • FIG. 4 shows by way of example a polar diagram for the luminous intensity distribution [cd / klm] of an LED unit with Symmetrical radiation characteristic S and with asymmetric radiation characteristic A.
  • the diagram shows that the LED unit with symmetrical radiation characteristic or lens uniform distribution of light intensity (eg. Approximately 500 cd / klm m Fig. 4) via a through the LED Arrangement conditional beam angle, for example, has 90 °.
  • the asymmetrical lens 20 or emission characteristic it can be seen that the radiated light is focused by its design in an emission angle of approximately 20 to 40 °, preferably 30 °.
  • the intensity of light is distributed in such a way that it is higher in the desired ranges (for example approx.
  • the distribution of light intensity according to the place of use can be determined individually by the shape of the lens 20; For example, FIG. 4 shows an approximately linear course.
  • the price tags 5 of the goods offered are realized as electronic LCD displays.
  • the price tag 5 shows a detailed view of a price tag 5.
  • the price tag 5 in this case has an LCD display 8.
  • the ad can be any other electronic ad.
  • LED module 11 On the back of the price tag is an LED module 11. On this, three LEDs 4 are indicated, the have a different emission direction. Of course, the LED module may also include more or fewer LEDs. Again, the LEDs are aligned so that products are illuminated more brightly in the distance than those in the vicinity. This is symbolized by the length of the arrows 6. As a result, a uniform brightness of the entire display of the shelf is achieved.
  • At least one additional LED 9 is mounted on the same side as the LCD display. This has the function to increase the attention of the customer to the ad. For example, special prices can be highlighted. It is also conceivable that the business implementing the invention carries out a customer identification and registers the buying behavior of the identified customers. In this way, products that potentially correspond to the buying behavior of a customer in business can be highlighted. Of course, other ways of highlighting are conceivable. For example, the display may have a conspicuous signaling in this case.
  • the LED lighting can have one or more light sensors 10. This can be designed to detect the ambient light and to compensate for the illumination caused by the LED lighting. In addition, it is possible that he recorded the goods level of the sales cabinet. In this way, the responsible employees of the store can be informed that, for example, a certain product is no longer available in the store, or that a particular shelf is empty.
  • the color characteristic of the LED lighting is adjustable, in particular depending on the present product groups. For this purpose, as already mentioned, it has differently colored LEDs. In addition, the color characteristic can be varied locally. This ensures that different groups of goods can be irradiated with light of different colors.
  • a particularly high color rendering index is achieved in order to make the typical printings of the packaging of the goods present in the cooling rack appear brilliant.
  • a special attractiveness of the products is achieved by ensuring a high color rendering index.
  • the color temperature can be adapted to the respective product. For example, with meat, special support of redness can be achieved by setting the color temperature to a lower level. This can be achieved by operating the red LEDs more strongly.
  • a further advantage according to the invention results from the fact that the LEDs are automatically cooled by being attached to the cooling rack by the cold emitted by the latter. As a result, they have optimum luminous efficiency. Furthermore, the surface of the refrigerated shelf on which the LED lighting is mounted, serve as a heat sink. This can additionally still by be required that the LED lighting is mounted on a cooling plate. This can either be an integral part of the cooling rack. However, it can also be a separate panel between LED lighting and cooling rack.
  • the LED lighting has electronics for driving and controlling the LEDs so that they can be operated correctly.
  • a control electronics is designed so that the LED lighting on conventional power supply, such as. 12V DC or AC mains voltage, can be connected.
  • the linear LED lighting unit may provide connections for conventional lamp sockets, such as e.g. of fluorescent tubes.
  • the electronics are preferably integrated in the LED lighting, but can also be housed separately in the cooling rack or otherwise.
  • a plurality of supply conductors can be used, wherein the LEDs can be operated to different degrees, for example by means of pulse width modulation and / or by means of the drive current.
  • a further exemplary embodiment of an inventive LED arrangement is shown in a refrigerator.
  • Fig. 6a shows the refrigerator from the front, while Fig. 6b shows a top view.
  • the refrigerator has three doors 16. These are mounted on the door frame 17.
  • LED lights are mounted on the inside. These can be designed as linear LED units 3.
  • the linear LED units are vertically aligned.
  • one or more LED modules can be mounted on the inside of the door frame.
  • the linear LED units 3 at the corners left and right of the refrigerator have an asymmetrical radiation characteristic, as shown for example in the polar diagram in Fig. 4. This can compensate for the problem that they are mounted decentrally in the horizontal plane in the refrigerator, i. that they illuminate the room from a decentralized position. Due to the asymmetrical radiation characteristic of the sales area, that is, here the individual shelves, in the areas of more distant from the linear LED units 3 areas illuminated more than the closer. As a result, despite the decentralized position of the linear LED units 3, a uniform illumination of the refrigerated shelves can be achieved. Their emission angle is preferably 30 °.
  • the LED illuminations 15 between the three doors 16 have a symmetrical emission characteristic, as shown, for example, in the polar diagram in FIG. 4. Their emission angle is significantly greater, preferably at least 90 °.
  • an asymmetric lens such as the lens in Fig. 2, may again be placed in front of the LED illumination in the emission direction to achieve an asymmetrical emission characteristic.
  • the lens preferably has an elongate shape corresponding to the LED unit.
  • the lens is rotatable about its longitudinal axis.
  • it can be designed so that by rotating through 180 °, the asymmetrical radiation characteristic of the LED unit 3 is mirrored.
  • an LED unit 3 can be used by simply turning its lens both left and right in the refrigerator.
  • FIG. 7 schematically shows a possible system 12 for illuminating, informing and monitoring sales booths.
  • the system has a central control unit 13. This is responsible for the display on the LCD displays 8, for the illumination by means of the LED illumination en 11 and for the detection of the goods level by means of the sensors 10.
  • a plurality of LEDs 11 or LED arrays, a plurality of LCD displays 8 and a plurality of light sensors 10 are connected via a bus 14 to the central control unit 13.
  • the central control unit may be, for example, a computer located in the business office.
  • Price or further information on a product can be changed from a central location.
  • the invention is by no means limited to refrigerated shelves alone.
  • the invention may as well be used in other refrigerated or uncooled display cabinets, such as freezers or uncooled shelves.

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

Abstract

L'invention concerne un éclairage à DEL pour des meubles de vente réfrigérés (1), notamment pour des présentoirs réfrigérés, comprenant une pluralité de DEL (4, 9) servant à l'éclairage des meubles de vente. L'invention est caractérisée en ce qu'au moins une partie des DEL de l'éclairage par DEL se présente au moins sous la forme d'une unité à DEL (3) linéaire, par exemple du type projecteur mural, et en ce que ladite unité à DEL (3) linéaire est montée dans la zone supérieure du meuble de vente réfrigéré, notamment sous la partie de recouvrement supérieure (7) du présentoir réfrigéré. L'unité à DEL (3) linéaire présente des caractéristiques d'émission lumineuse limitées à un angle déterminé ainsi qu'une répartition de l'intensité lumineuse asymétrique. La caractéristique d'émission lumineuse asymétrique de l'unité à DEL (3) linéaire est obtenue par l'intermédiaire d'une lentille asymétrique (20) conçue à cet effet.
PCT/EP2010/055457 2009-04-23 2010-04-23 Éclairage par del pour meubles de vente réfrigérés WO2010122154A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10716819.7A EP2421414B1 (fr) 2009-04-23 2010-04-23 Éclairage à del pour présentoir réfrigéré
DE112010001717T DE112010001717A5 (de) 2009-04-23 2010-04-23 Led-beleuchtung für gekühlte verkaufsmöbel

Applications Claiming Priority (2)

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EP3012563A1 (fr) * 2014-10-10 2016-04-27 Liebherr-Hausgeräte Lienz GmbH Appareil de réfrigération et/ou de congélation avec une surface de stockage ayant des moyens d'éclairage
DE102018201043A1 (de) * 2018-01-24 2019-07-25 Osram Gmbh Optoelektronisches bauelement sowie bauelementverbund daraus
DE102021102968A1 (de) 2020-02-12 2021-08-12 Aichinger Gmbh Warenpräsentationsmöbel sowie -verfahren
US11976792B2 (en) 2020-05-18 2024-05-07 Nimbus Group Gmbh Asymmetrical linear lens and associated linear luminaire

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DE202012003621U1 (de) * 2012-04-12 2013-07-15 "Steinberg" Leuchtmittelwerke Gmbh Röhrenförmiges Leuchtmittel insbesondere zur Beleuchtung von Ausstellungs- und Verkaufsflächen für Lebensmittel
EP3012563A1 (fr) * 2014-10-10 2016-04-27 Liebherr-Hausgeräte Lienz GmbH Appareil de réfrigération et/ou de congélation avec une surface de stockage ayant des moyens d'éclairage
DE102018201043A1 (de) * 2018-01-24 2019-07-25 Osram Gmbh Optoelektronisches bauelement sowie bauelementverbund daraus
DE102021102968A1 (de) 2020-02-12 2021-08-12 Aichinger Gmbh Warenpräsentationsmöbel sowie -verfahren
US11976792B2 (en) 2020-05-18 2024-05-07 Nimbus Group Gmbh Asymmetrical linear lens and associated linear luminaire

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EP2421414B1 (fr) 2018-10-17
EP2421414A1 (fr) 2012-02-29
DE112010001717A5 (de) 2012-09-20
DE202009005961U1 (de) 2010-09-23

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