EP1191277A2 - Lighting element for refrigerator cabinets - Google Patents

Lighting element for refrigerator cabinets Download PDF

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Publication number
EP1191277A2
EP1191277A2 EP00810937A EP00810937A EP1191277A2 EP 1191277 A2 EP1191277 A2 EP 1191277A2 EP 00810937 A EP00810937 A EP 00810937A EP 00810937 A EP00810937 A EP 00810937A EP 1191277 A2 EP1191277 A2 EP 1191277A2
Authority
EP
European Patent Office
Prior art keywords
lighting fixture
fixture according
circuit board
printed circuit
plastic housing
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Withdrawn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
EP00810937A
Other languages
German (de)
French (fr)
Other versions
EP1191277A3 (en
Inventor
Elisabeth Truttmann-Bättig
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.)
Lisa Lux GmbH
Original Assignee
Lisa Lux 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 Lisa Lux GmbH filed Critical Lisa Lux GmbH
Publication of EP1191277A2 publication Critical patent/EP1191277A2/en
Publication of EP1191277A3 publication Critical patent/EP1191277A3/en
Withdrawn legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/005—Lighting devices intended to be free-standing with a lamp housing maintained at a distance from the floor or ground via a support, e.g. standing lamp for ambient lighting
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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]
    • 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
    • F25D2500/00—Problems to be solved
    • F25D2500/02—Geometry problems

Definitions

  • the present invention relates to a lighting fixture for refrigeration cabinets with a variety of light-emitting Diodes (LED).
  • LED light-emitting Diodes
  • a wide range of waves is created by standard lamps generated in the visible and invisible area. Doing so maximum 35% of the electrical energy used in visible light converted. In the invisible area, if necessary, the UV radiation through complex filters be reduced. However, there is still a high residual percentage UV and IR radiation, living things, food and UV sensitive Objects due to the high concentration loaded. Also for the resulting high heat load appropriate measures are taken to reduce their impact to reduce. To the effect of this photochemically effective One can either reduce radiation to food reduce the overall lighting or lighting with choose a wavelength that is low photochemical Activity. Such lighting can be by means of light emitting diodes (LED) are generated. Using LED can be monochromatic light with a narrow wavelength bandwidth be generated.
  • LED light emitting diodes
  • LEDs can generate and have low UV light accordingly a low IR radiation. This leads in the area of Refrigerated cabinets for an extremely desirable energy saving effect. Furthermore, the LEDs have a conventional one Fluorescent tubes have a lifespan of five to ten times.
  • Lighting according to DE-U-297 makes these advantages 15 157 to use. It suggests a variety of LEDs in a closely arranged position in one Arrange level on a board. Since the applicant already it was known that LEDs are extremely narrow Have beam angles, he suggests, in a certain Distance above the LEDs is a diffusely transmitting light Arrange embossing disc. Better scattering of light is only generated to a limited extent. The embossing disc carries the further to a considerable loss of light.
  • a lighting fixture for refrigeration units solves this task the features of claim 1.
  • the assembled lighting fixture 1 according to the Invention as shown in perspective in Figure 1 is not much different from a conventional one Lighting fixture in which, for example, a fluorescent tube could be accommodated.
  • a U-shaped bar profile from the outside 16 by a side cover 22 laterally is completed and through which the feed line 23 after is led outside.
  • the side cover 22 is with Fixing screws 24 on the U-shaped bar profile 16 attached.
  • the open side of the U-shaped bar section 16 is completed with a transparent cover 20.
  • the transparent cover 20 is selected from a material that diffraction of the light which leads to the Beam angle of the LEDs increased and leads to a more diffuse light at the same time.
  • Refrigerated cabinets can be adapted accordingly required number of modules 3 accommodated.
  • Figure 2 shows in principle a section transverse to Longitudinal direction of the lighting fixture 1, although that U-shaped bar profile 16 a slightly changed Cross-sectional shape compared to the version of Figure 1.
  • the version of Figure 1 has a curved side surface and thus results in a lighting fixture that, in particular, also attached to a shelf in a refrigerator can be.
  • bar profile 16 are the two free ones Thighs parallel and directed straight up.
  • On the flat bottom surface 27 of the bar profile 16 are on the Inner surface two parallel, equally high upward facing Longitudinal webs 17 formed in one piece.
  • longitudinal guide grooves 18 are available, which serve to a rail 8 insert.
  • Screws 28 are on this rail 8 the modules 3 screwed tight.
  • the side walls 29 of the U-shaped Profiles 16 have on the one hand in Longitudinally extending grooves 19 and on the other hand extending along the entire length of the profile Bores 21, which are approximately a quarter open.
  • In the Grooves 19 can be the transparent already mentioned Slide cover 20 in from the side.
  • the open holes 21 serve the side covers 22 by means Fasten fastening screws 24.
  • screws are preferably used, which are in the Bores 21 cut their own thread.
  • the lighting fixture 1 consists of the U-shaped one Bar profile 16, in which several modules 3 are inserted. These modules 3 consist of one Plastic housing 4 in which the light-emitting diodes 2 are accommodated.
  • This plastic housing 4 is shown in detail in Figures 3-6.
  • the Plastic housing 4 is a box-like container a base plate 5 and a cover 9 which can be placed thereon.
  • the lid 9 has vertical side walls and is with a domed cover 13 covered.
  • In the arched Cover surface 13 is a grid 14, wherein all holes are surrounded by a countersink to one to have as little light loss as possible.
  • the illustrated Example is the curved top surface 13 of three elongated Partial areas formed.
  • each of these stripe-shaped Partial area is a series of through holes for Implementation of the light emitting diodes arranged.
  • the Cover 9 can be snapped onto the base plate 5 put on. Accordingly, in the side walls Bottom plate 5 snap-in tables 25 provided in the Snap tabs 26 on the side wall of the lid 9 molded on, intervene. In the footprint of the Various holes are made in the base plate 5. On the one hand are different round holes 10 lying on the central axis present that of fixing the bottom plate and thus serve indirectly the entire module 3 on the rail 8. Furthermore, various elongated holes 11 are provided, which the Serve cable entry. The cable connections here are not shown, serve to feed the modules arranged one behind the other. The modules 3 can be connected in series as well as in parallel.
  • the number of Beams 6 depends on the number of modules in the module PCB strips to be accommodated 7.
  • the number of Beams 6 depends on the number of modules in the module PCB strips to be accommodated 7.
  • three such printed circuit board strips 7 available. They run the entire length of the Base plate 5 on several carrier webs 6, the corresponding are spaced one behind the other. Normally three such carrier webs are sufficient for a circuit board strip 7.
  • the carrier webs 6 end at their upper Ends in a plane, each of which is the gradient plane of a PCB strip 7 is.
  • the angle ⁇ include with each other.
  • This angle ⁇ should be about Size of the radiation angle of the LEDs correspond.
  • the beam angle of the light emitting diode is here with ⁇ specified. By diffracting the light as it passes through the transparent cover 20 Beam angle ⁇ is increased accordingly, so that now the beam angle corresponds to ⁇ '.
  • LEDs have a relatively narrow beam angle. On the LED's available on the market today have a radiation angle of a maximum of 22 °. For sensible area lighting has been used today, the largest possible Area to be equipped with LEDs. To be enough Accordingly, there were an enormous number of luminance levels to be achieved LEDs required.
  • the present invention not only shows an arrangement that leads to better illumination and leads to a reduction in the number of LEDs, but the entire Design is also extremely easy to manufacture, allowed an ideal modular design and also leads to a secure mounting of the LED's. Also the assembly, both the Individual modules as well as the modules for a lighting fixture is extremely simple.
  • the entire module should be wider and accordingly also the lighting fixture 1 widen the individual carrier webs 6 so that on each Printed circuit board strips 7 two each transverse to the longitudinal direction LEDs have space next to each other.
  • the choice of LEDs can also naturally take place as required. preferably, will use the white light diodes available today and with colored diodes as required Mix. So you can white light diodes with yellow light diodes use in areas where, for example Offers fresh baked goods or white light diodes Red light-emitting diodes are mixed when the lighting fixture is used in fresh meat.
  • the lighting fixture 1 is normally powered by low voltage direct current provided. Rectifiers and transformers could in principle be integrated in the lighting fixture 1 become. However, since this usually produces a certain amount of waste heat cause, however, these components are preferred Arrange outside the lighting fixture 1.

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  • 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)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

The body consists of a long U-shaped housing (16). Accommodated along the housing are modules (3) fitted with LEDs (2) arranged in three rows and mounted on inclined platforms (7) on the top of supports (6). These stand on a base (5) with a rail which clips into the sides (17) of a channel provided in the housing. The body has a refractive transparent cover (20) which increases the spread of the emitted light

Description

Die vorliegende Erfindung betrifft einen Beleuchtungskörper für Kühlmöbel mit einer Vielzahl von lichtemittierenden Dioden (LED).The present invention relates to a lighting fixture for refrigeration cabinets with a variety of light-emitting Diodes (LED).

Durch handelsübliche Lampen wird ein breites Wellenspektrum im sichtbaren und unsichtbaren Bereich erzeugt. Dabei wird maximal 35% der eingesetzten elektrischen Energie in sichtbares Licht umgewandelt. Im unsichtbaren Bereich muss, falls erforderlich, die UV-Strahlung durch aufwendige Filter reduziert werden. Es bleibt aber noch ein hoher Restanteil UV- und IR-Strahlung, der Lebewesen, Nahrungsmittel und UV-empfindliche Gegenstände durch die hohe Konzentration belastet. Auch für die entstehende hohe Wärmebelastung müssen geeignete Massnahmen getroffen werden, um deren Auswirkung zu reduzieren. Um die Wirkung dieser photochemisch wirksamen Strahlung auf Lebensmittel zu reduzieren, kann man entweder die Gesamtbeleuchtung reduzieren oder eine Beleuchtung mit einer Wellenlänge wählen, die eine niedrige photochemische Aktivität hervorruft. Eine solche Beleuchtung kann mittels lichtemittierenden Dioden (LED) erzeugt werden. Mittels LED kann monochromatisches Licht mit einer geringen Wellenlängen-Bandbreite erzeugt werden. Diese bekannten LED können entsprechend UV-armes Licht erzeugen und haben des weiteren eine geringe IR-Strahlung. Dies führt im Bereich der Kühlmöbel zu einem äusserst erwünschten Energiespareffekt. Des weiteren haben die LED eine gegenüber herkömmlichen Leuchtstoffröhren etwa fünf- bis zehnfache Lebensdauer.A wide range of waves is created by standard lamps generated in the visible and invisible area. Doing so maximum 35% of the electrical energy used in visible light converted. In the invisible area, if necessary, the UV radiation through complex filters be reduced. However, there is still a high residual percentage UV and IR radiation, living things, food and UV sensitive Objects due to the high concentration loaded. Also for the resulting high heat load appropriate measures are taken to reduce their impact to reduce. To the effect of this photochemically effective One can either reduce radiation to food reduce the overall lighting or lighting with choose a wavelength that is low photochemical Activity. Such lighting can be by means of light emitting diodes (LED) are generated. Using LED can be monochromatic light with a narrow wavelength bandwidth be generated. These well-known LEDs can generate and have low UV light accordingly a low IR radiation. This leads in the area of Refrigerated cabinets for an extremely desirable energy saving effect. Furthermore, the LEDs have a conventional one Fluorescent tubes have a lifespan of five to ten times.

Diese Vorteile macht sich eine Beleuchtung gemäss der DE-U-297 15 157 zu Nutze. Hierin wird vorgeschlagen, eine Vielzahl von LED's in dicht nebeneinander angeordneter Lage in einer Ebene auf einer Platine anzuordnen. Da dem Anmelder bereits bekannt war, dass LED's einen äusserst schmalen Ausstrahlungswinkel haben, schlägt er vor, in einem gewissen Abstand über den LED's eine das Licht diffus durchlassende Prägescheibe anzuordnen. Eine bessere Streuung des Lichtes wird dadurch nur begrenzt erzeugt. Die Prägescheibe führt des weiteren zu einem erheblichen Lichtverlust.Lighting according to DE-U-297 makes these advantages 15 157 to use. It suggests a variety of LEDs in a closely arranged position in one Arrange level on a board. Since the applicant already it was known that LEDs are extremely narrow Have beam angles, he suggests, in a certain Distance above the LEDs is a diffusely transmitting light Arrange embossing disc. Better scattering of light is only generated to a limited extent. The embossing disc carries the further to a considerable loss of light.

Eine weitere Möglichkeit, den Nachteil des engen Ausstrahlungswinkels zu reduzieren, besteht darin, die entsprechenden Leuchtkörper in einer bestimmten Anordnung im Kühlmöbel anzubringen, um dadurch den optischen Effekt einer vollständigen Ausstrahlung zu erreichen. Eine solche Lösung ist aus der DE-U-297 17 444 bekannt. Another way to address the disadvantage of the tight To reduce the beam angle is that corresponding filament in a certain arrangement in To install refrigeration cabinets to create the visual effect of a to achieve full charisma. Such a solution is known from DE-U-297 17 444.

Um nach dem bisherigen Stand der Technik Kühlmöbel mit Leuchtkörpern auszuleuchten, die lichtemittierende Dioden enthalten, müsste man gemäss dem heutigen Stand der Technik praktisch immer eine entsprechend hierfür konzipierte Anlage vorsehen. Es ist die Aufgabe der vorliegenden Erfindung, einen Beleuchtungskörper zu schaffen, der anstelle der heute üblichen Leuchtstoffröhren eingesetzt werden kann, ohne dabei eine Verminderung der Ausleuchtung zu bewirken.In order to have refrigerators according to the current state of the art Illuminate the light emitting diodes would contain, according to the current state of the art practically always a system designed for this purpose provide. It is the object of the present invention to create a lighting fixture instead of today usual fluorescent tubes can be used without doing so to reduce the illumination.

Es ist eine weitere Aufgabe der Erfindung, den Beleuchtungskörper modular aufzubauen, so dass entsprechend der Wahl der Anzahl Module praktisch alle üblichen Normlängen der Leuchtstoffröhren ohne grosse Anpassungen ersetzt werden können.It is another object of the invention Build lighting fixtures modularly, so that accordingly the choice of the number of modules practically all standard lengths of fluorescent tubes can be replaced without major adjustments can.

Diese Aufgabe löst ein Beleuchtungskörper für Kühlmöbel mit den Merkmalen des Patentanspruches 1.A lighting fixture for refrigeration units solves this task the features of claim 1.

Weitere vorteilhafte Ausgestaltungsformen gehen aus den weiteren Ansprüchen hervor und deren Wirkung und Bedeutung wird in der nachfolgenden Beschreibung aufgezeigt.Further advantageous embodiments come from further claims and their effect and meaning is shown in the description below.

In der Zeichnung ist eine bevorzugte Ausführungsform des Erfindungsgegenstandes dargestellt und nachfolgend beschrieben. Es zeigt:

Figur 1
eine perspektivische Gesamtansicht des erfindungsgemässen Beleuchtungskörpers im zusammengebauten Zustand;
Figur 2
einen Vertikalschnitt durch den Beleuchtungskörper mit einer gegenüber der Figur 1 leicht geänderten Querschnittsform, wobei ein darin angeordnetes Modul ersichtlich ist;
Figur 3
zeigt ein Kunststoffgehäuse zur Bildung eines Moduls in der Aufsicht von oben und
Figur 4
in der Seitenansicht, während
Figur 5
das Kunststoffgehäuse mit Blick von unten auf die Bodenplatte zeigt und
Figur 6
die Stirnseite des zusammengebauten Kunststoffgehäuses gemäss den Figuren 3 - 5 darstellt.
In the drawing, a preferred embodiment of the subject matter of the invention is shown and described below. It shows:
Figure 1
an overall perspective view of the lighting fixture according to the invention in the assembled state;
Figure 2
a vertical section through the lighting fixture with a slightly changed cross-sectional shape compared to Figure 1, wherein a module arranged therein can be seen;
Figure 3
shows a plastic housing to form a module in the top view and
Figure 4
in side view while
Figure 5
the plastic housing with a view from below of the base plate shows and
Figure 6
represents the end face of the assembled plastic housing according to FIGS. 3-5.

Der zusammengebaute Beleuchtungskörper 1 gemäss der Erfindung, wie er in der Figur 1 perspektivisch dargestellt ist, sieht nicht viel anders aus als ein herkömmlicher Beleuchtungskörper, in dem beispielsweise eine Leuchtstoffröhre untergebracht sein könnte. In der Ansicht nach Figur 1 erkennt man von aussen lediglich ein U-förmiges Stangenprofil 16, das von einer seitlichen Abdeckung 22 seitlich abgeschlossen ist und durch die die Speiseleitung 23 nach aussen geführt ist. Die seitliche Abdeckung 22 ist mit Befestigungsschrauben 24 am U-förmigen Stangenprofil 16 befestigt. Die offene Seite des U-förmigen Stangenprofils 16 ist mit einer transparenten Abdeckung 20 abgeschlossen. Die transparente Abdeckung 20 ist aus einem Material gewählt, das zu einer Beugung des Lichtes führt, welches den Ausstrahlungswinkel der Leuchtdioden LED vergrössert und gleichzeitig zu einem diffuseren Licht führt. Im U-förmigen Stangenprofil 16, welches in seiner Länge dem Bedarf in einem Kühlmöbel angepasst sein kann, ist entsprechend die erforderliche Anzahl Module 3 untergebracht.The assembled lighting fixture 1 according to the Invention as shown in perspective in Figure 1 is not much different from a conventional one Lighting fixture in which, for example, a fluorescent tube could be accommodated. In the view according to FIG. 1 you can only see a U-shaped bar profile from the outside 16 by a side cover 22 laterally is completed and through which the feed line 23 after is led outside. The side cover 22 is with Fixing screws 24 on the U-shaped bar profile 16 attached. The open side of the U-shaped bar section 16 is completed with a transparent cover 20. The transparent cover 20 is selected from a material that diffraction of the light which leads to the Beam angle of the LEDs increased and leads to a more diffuse light at the same time. In the U-shaped Bar profile 16, which in length in a need Refrigerated cabinets can be adapted accordingly required number of modules 3 accommodated.

Die Figur 2 zeigt im Prinzip einen Schnitt quer zur Längsrichtung des Beleuchtungskörpers 1, wobei allerdings das U-förmige Stangenprofil 16 eine etwas geänderte Querschnittsform gegenüber der Version nach Figur 1 aufweist. Die Version nach Figur 1 hat eine gewölbte Seitenfläche und ergibt so einen Beleuchtungskörper, der insbesondere auch randständig an einer Ablage in einem Kühlmöbel angebracht sein kann. In dem nach Figur 2 gezeigten U-förmigen Stangenprofil 16 sind wie bereits erwähnt die beiden freien Schenkel parallel und eben nach oben gerichtet. Auf der ebenen Bodenfläche 27 des Stangenprofils 16 sind auf der Innenfläche zwei parallele, gleich hohe nach oben gerichtete Längsstege 17 einstückig angeformt. Auf den beiden zueinander gerichteten Flanken der Längsstege 17 sind Längsführungsrillen 18 vorhanden, die dazu dienen, eine Schiene 8 einzuschieben. Auf dieser Schiene 8 sind mittels Schrauben 28 die Module 3 fest aufgeschraubt. Die Seitenwände 29 des U-förmigen Profiles 16 haben im oberen Bereich einerseits in Längsrichtung sich erstreckende Nuten 19 und andererseits längs über die gesamte Profillänge sich erstreckende Bohrungen 21, die ca. zu einem Viertel offen sind. In die Nuten 19 lässt sich die bereits erwähnte transparente Abdeckung 20 seitlich einschieben. Die offenen Bohrungen 21 dienen dazu, die seitlichen Abdeckungen 22 mittels Befestigungsschrauben 24 zu befestigen. Dabei dringen die Befestigungsschrauben 24 in die offenen Bohrungen 21 ein. Hierzu verwendet man vorzugsweise Schrauben, die sich in den Bohrungen 21 ihr Gewinde selber schneiden.Figure 2 shows in principle a section transverse to Longitudinal direction of the lighting fixture 1, although that U-shaped bar profile 16 a slightly changed Cross-sectional shape compared to the version of Figure 1. The version of Figure 1 has a curved side surface and thus results in a lighting fixture that, in particular, also attached to a shelf in a refrigerator can be. In the U-shaped shown in Figure 2 As already mentioned, bar profile 16 are the two free ones Thighs parallel and directed straight up. On the flat bottom surface 27 of the bar profile 16 are on the Inner surface two parallel, equally high upward facing Longitudinal webs 17 formed in one piece. On the two to each other directed flanks of the longitudinal webs 17 are longitudinal guide grooves 18 are available, which serve to a rail 8 insert. Screws 28 are on this rail 8 the modules 3 screwed tight. The side walls 29 of the U-shaped Profiles 16 have on the one hand in Longitudinally extending grooves 19 and on the other hand extending along the entire length of the profile Bores 21, which are approximately a quarter open. In the Grooves 19 can be the transparent already mentioned Slide cover 20 in from the side. The open holes 21 serve the side covers 22 by means Fasten fastening screws 24. The penetrate Fixing screws 24 in the open holes 21. For this purpose, screws are preferably used, which are in the Bores 21 cut their own thread.

Der Beleuchtungskörper 1 besteht wie erwähnt aus dem U-förmigen Stangenprofil 16, in dem mehrere Module 3 eingeschoben sind. Diese Module 3 bestehen aus einem Kunststoffgehäuse 4, in dem die lichtemittierenden Dioden 2 untergebracht sind. Dieses Kunststoffgehäuse 4 ist detailliert in den Figuren 3 - 6 dargestellt. Das Kunststoffgehäuse 4 ist ein schachtelartiges Behältnis mit einer Bodenplatte 5 und einem darauf aufsetzbaren Deckel 9. Der Deckel 9 hat vertikale Seitenwände und ist mit einer gewölbten Deckfläche 13 abgedeckt. In der gewölbten Deckfläche 13 ist ein Lochraster 14 vorhanden, wobei sämtliche Löcher mit einer Ansenkung umgeben sind, um einen möglichst geringen Lichtverlust zu haben. Im dargestellten Beispiel ist die gewölbte Deckfläche 13 aus drei länglichen Teilflächen gebildet. In jeder dieser streifenförmigen Teilfläche ist eine Reihe von Durchgangslöchern zur Durchführung der lichtemittierenden Dioden angeordnet. Der Deckel 9 lässt sich auf die Bodenplatte 5 einschnappend aufsetzen. Entsprechend sind in den Seitenwänden der Bodenplatte 5 Einrastnischen 25 vorgesehen, in die Einrastzungen 26, die an der Seitenwand des Deckel 9 angeformt sind, eingreifen. In der Grundfläche der Bodenplatte 5 sind verschiedene Löcher angebracht. Einerseits sind verschiedene auf der Mittenachse liegende Rundlöcher 10 vorhanden, die der Befestigung der Bodenplatte und damit indirekt des gesamten Moduls 3 auf der Schiene 8 dienen. Ferner sind verschiedene Langlöcher 11 vorgesehen, die der Kabeldurchführung dienen. Die Kabelverbindungen, die hier nicht dargestellt sind, dienen der Speisung der hintereinander angeordneten Module. Die Module 3 können sowohl in Serie als auch parallel geschaltet sein.As mentioned, the lighting fixture 1 consists of the U-shaped one Bar profile 16, in which several modules 3 are inserted. These modules 3 consist of one Plastic housing 4 in which the light-emitting diodes 2 are accommodated. This plastic housing 4 is shown in detail in Figures 3-6. The Plastic housing 4 is a box-like container a base plate 5 and a cover 9 which can be placed thereon. The lid 9 has vertical side walls and is with a domed cover 13 covered. In the arched Cover surface 13 is a grid 14, wherein all holes are surrounded by a countersink to one to have as little light loss as possible. In the illustrated Example is the curved top surface 13 of three elongated Partial areas formed. In each of these stripe-shaped Partial area is a series of through holes for Implementation of the light emitting diodes arranged. The Cover 9 can be snapped onto the base plate 5 put on. Accordingly, in the side walls Bottom plate 5 snap-in tables 25 provided in the Snap tabs 26 on the side wall of the lid 9 molded on, intervene. In the footprint of the Various holes are made in the base plate 5. On the one hand are different round holes 10 lying on the central axis present that of fixing the bottom plate and thus serve indirectly the entire module 3 on the rail 8. Furthermore, various elongated holes 11 are provided, which the Serve cable entry. The cable connections here are not shown, serve to feed the modules arranged one behind the other. The modules 3 can be connected in series as well as in parallel.

Auf der Grundfläche der Bodenplatte 5, die in der Figur 2 im abgedeckten Zustand dargestellt ist, erkennt man, dass auf der Innenseite der Bodenplatte 5 mehrere vertikal nach oben stehende Trägerstege 6 angeordnet sind. Die Anzahl der Trägerstege 6 richtet sich nach der Anzahl der im Modul unterzubringenden Leiterplattenstreifen 7. Im dargestellten bevorzugten Beispiel sind drei solcher Leiterplattenstreifen 7 vorhanden. Sie verlaufen über die gesamte Länge der Bodenplatte 5 auf mehrere Trägerstege 6, die entsprechend beabstandet hintereinander angeordnet sind. Im Normalfall genügen drei solcher Trägerstege für einen Leiterplattenstreifen 7. Die Trägerstege 6 enden an ihren oberen Enden in einer Ebene, welche jeweils die Verlaufsebene eines Leiterplattenstreifens 7 ist. Wie aus der Figur deutlich erkennbar, sind jeweils zwei benachbarte Leiterplattenstreifen 7 in zwei Ebenen angebracht, die einen Winkel α miteinander einschliessen. Dieser Winkel α sollte etwa der Grösse des Abstrahlungswinkels der Leuchtdioden entsprechen. Der Ausstrahlungswinkel der Leuchtdiode ist hier mit β angegeben. Durch die Beugung des Lichtes beim Durchtritt durch die transparente Abdeckung 20 wird der Ausstrahlungswinkel β entsprechend vergrössert, so dass nun der Ausstrahlungswinkel β' entspricht.On the base of the base plate 5, which in FIG covered state, you can see that on the inside of the bottom plate 5 several vertically upwards standing support webs 6 are arranged. The number of Beams 6 depends on the number of modules in the module PCB strips to be accommodated 7. In the illustrated preferred example are three such printed circuit board strips 7 available. They run the entire length of the Base plate 5 on several carrier webs 6, the corresponding are spaced one behind the other. Normally three such carrier webs are sufficient for a circuit board strip 7. The carrier webs 6 end at their upper Ends in a plane, each of which is the gradient plane of a PCB strip 7 is. As is clear from the figure two adjacent circuit board strips can be seen 7 attached in two planes, the angle α include with each other. This angle α should be about Size of the radiation angle of the LEDs correspond. The beam angle of the light emitting diode is here with β specified. By diffracting the light as it passes through the transparent cover 20 Beam angle β is increased accordingly, so that now the beam angle corresponds to β '.

LED's haben einen relativ engen Abstrahlungswinkel. Auf dem Markt erhältliche LED's haben heute einen Abstrahlungswinkel von maximal 22°. Für eine vernünftige flächige Ausleuchtung hat man sich heute damit beholfen, eine möglichst grosse Fläche mit LED's zu bestücken. Um eine genügende Leuchtungsdichte zu erzielen waren entsprechend enorm viele LED's erforderlich. Die vorliegende Erfindung zeigt nicht nur eine Anordnung, die zu einer besseren Ausleuchtung und zu einer Reduktion der Anzahl LED's führt, sondern die gesamte Gestaltung ist zudem äusserst einfach herstellbar, erlaubt eine ideale modulare Bauweise und führt zusätzlich zu einer sicheren Halterung der LED's. Auch die Montage, sowohl der Einzelmodule als auch der Module zu einem Beleuchtungskörper ist äusserst einfach. LEDs have a relatively narrow beam angle. On the LED's available on the market today have a radiation angle of a maximum of 22 °. For sensible area lighting has been used today, the largest possible Area to be equipped with LEDs. To be enough Accordingly, there were an enormous number of luminance levels to be achieved LEDs required. The present invention not only shows an arrangement that leads to better illumination and leads to a reduction in the number of LEDs, but the entire Design is also extremely easy to manufacture, allowed an ideal modular design and also leads to a secure mounting of the LED's. Also the assembly, both the Individual modules as well as the modules for a lighting fixture is extremely simple.

Neben der hier dargestellten bevorzugten Ausführungsform sind selbstverständlich verschiedene Variationen möglich. So kann insbesondere auch das gesamte Modul breiter sein und entsprechend auch der Beleuchtungskörper 1. Hierzu würde man die einzelnen Trägerstege 6 so verbreitern, dass auf jedem Leiterplattenstreifen 7 jeweils quer zur Längsrichtung zwei LED's nebeneinander Platz haben. Auch die Wahl der LED's kann selbstverständlich je nach Bedarf erfolgen. Bevorzugterweise wird man die heute erhältlichen Weisslichtdioden einsetzen und diese je nach Bedarf mit entsprechend farbigen Dioden mischen. So kann man Weisslichtdioden mit Gelblichtdioden verwenden in Bereichen, in denen man beispielsweise Frischbackwaren anbietet oder Weisslichtdioden können mit Rotlichtdioden gemischt werden, wenn der Beleuchtungskörper im Frischfleischbereich eingesetzt wird.In addition to the preferred embodiment shown here of course different variations possible. So can in particular the entire module should be wider and accordingly also the lighting fixture 1 widen the individual carrier webs 6 so that on each Printed circuit board strips 7 two each transverse to the longitudinal direction LEDs have space next to each other. The choice of LEDs can also naturally take place as required. preferably, will use the white light diodes available today and with colored diodes as required Mix. So you can white light diodes with yellow light diodes use in areas where, for example Offers fresh baked goods or white light diodes Red light-emitting diodes are mixed when the lighting fixture is used in fresh meat.

Der Beleuchtungskörper 1 wird normalerweise mit Niederspannungsgleichstrom versorgt. Gleichrichter und Transformer könnten im Prinzip in dem Beleuchtungskörper 1 integriert werden. Da diese jedoch meist eine gewisse Abwärme verursachen, wird man diese Bauteile jedoch bevorzugterweise ausserhalb des Beleuchtungskörpers 1 anordnen. The lighting fixture 1 is normally powered by low voltage direct current provided. Rectifiers and transformers could in principle be integrated in the lighting fixture 1 become. However, since this usually produces a certain amount of waste heat cause, however, these components are preferred Arrange outside the lighting fixture 1.

Liste der BezugszahlenList of reference numbers

11
Beleuchtungskörperlighting
22
Lichtemittierende Dioden LEDLight emitting diodes LED
33
Modulmodule
44
KunststoffgehäusePlastic housing
55
Bodenplattebaseplate
66
Trägerstegesaid lands
77
LeiterplattenstreifenPCB strips
αα
Neigungswinkeltilt angle
ββ
AusstrahlungswinkelBeam angle
β'β '
Ausstrahlungswinkel nach BiegungBeam angle after bending
88th
Schienerail
99
Deckelcover
1010
Rundlöcher zur BefestigungRound holes for attachment
1111
Langlöcher zur KabeldurchführungElongated holes for cable entry
1212
Deckflächecover surface
1313
Wölbung der DeckflächeCurvature of the top surface
1414
Lochrasterbreadboard
1515
Langlöcher in Schiene 8Elongated holes in rail 8
1616
U-förmiges StangenprofilU-shaped bar profile
1717
Längsstegelongitudinal webs
1818
LängsführungsrillenLongitudinal guide grooves
1919
Nutengroove
2020
transparente Abdeckungtransparent cover
2121
1/4 offene Bohrung1/4 open hole
2222
seitliche Abdeckungside cover
2323
Speiseleitungfeeder
2424
Befestigungsschraubenmounting screws
2525
EinrastnischenEinrastnischen
2626
Einrastzungenlocking lances
2727
Bodenfläche von 16Floor area of 16
2828
Schraubenscrew
2929
Seitenwände von 16Sidewalls of 16

Claims (8)

Beleuchtungskörper (1) für Kühlmöbel mit einer Vielzahl von lichtemittierenden Dioden LED (2), dadurch gekennzeichnet, dass die Beleuchtung aus modulbildenden (3) Kunststoffgehäusen (4) aufgebaut ist, wobei jedes Kunststoffgehäuse eine Bodenplatte (5) aufweist mit Trägerstegen (6), auf die Leiterplattenstreifen (7) aufliegen, wobei die Leiterplattenstreifen die Länge eines Kunststoffgehäuses haben, und dass in jedem Gehäuse mehrere Leiterplattenstreifen angeordnet sind, die in Längsrichtung parallel, aber zueinander geneigt verlaufen, wobei der Neigungswinkel (α) zueinander mindestens annähernd dem Ausstrahlungswinkel (β,β') der lichtemittierenden Dioden (2) entspricht.Lighting fixture (1) for refrigerated cabinets with a large number of light-emitting diodes LED (2), characterized in that the lighting is constructed from module-forming (3) plastic housings (4), each plastic housing having a base plate (5) with carrier webs (6), rest on the printed circuit board strips (7), the printed circuit board strips having the length of a plastic housing, and in that in each housing a plurality of printed circuit board strips are arranged which run in the longitudinal direction parallel but inclined to one another, the angle of inclination (α) to one another being at least approximately the radiation angle (β , β ') corresponds to the light-emitting diodes (2). Beleuchtungskörper nach Anspruch 1, dadurch gekennzeichnet, dass das modulbildende (3) Kunststoffgehäuse (4) einen auf die Bodenplatte (5) aufsetzbaren Deckel (9) aufweist, der mit einer oberen Deckfläche (12) versehen ist, die so gewölbt (13) ist, dass sie die von den Leiterplattenstreifen (7) definierte Hüllfläche bildet, und mit einem Lochraster (14) versehen ist, durch den die LED (2) hindurch ragen und dabei darin gehalten sind. Lighting fixture according to claim 1, characterized in that the module-forming (3) plastic housing (4) has a cover (9) which can be placed on the base plate (5) and is provided with an upper cover surface (12) which is curved (13) in this way that it forms the envelope surface defined by the printed circuit board strips (7) and is provided with a hole pattern (14) through which the LEDs (2) protrude and are held therein. Beleuchtungskörper nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in jedem Kunststoffgehäuse (4) drei Leiterplattenstreifen (7) angeordnet sind.Lighting fixture according to claim 1 or 2, characterized in that three circuit board strips (7) are arranged in each plastic housing (4). Beleuchtungskörper nach Anspruch 1, dadurch gekennzeichnet, dass auf jedem Leiterplattenstreifen (7) eine Reihe von dicht hintereinander angeordneten LED's vorhanden ist.Lighting fixture according to claim 1, characterized in that a row of LEDs arranged closely one behind the other is present on each printed circuit board strip (7). Beleuchtungskörper nach Anspruch 1, dadurch gekennzeichnet, dass die Bodenplatte (5) Rundlöcher (10) zur Befestigung des Kunststoffgehäuses (4) auf einer Trägerschiene (8) und Langlöcher (11) zur Durchführung von elektrischen Leitungen aufweist.Lighting fixture according to claim 1, characterized in that the base plate (5) has round holes (10) for fastening the plastic housing (4) on a support rail (8) and elongated holes (11) for the passage of electrical lines. Beleuchtungskörper nach Anspruch 1, dadurch gekennzeichnet, dass dieser ein im Querschnitt im wesentlichen U-förmiges Stangenprofil (16) hat, in dem zwei parallele Längsstege (17) mit Längsführungsrillen (18) vorhanden sind, und dass alle modulbildenden (3) Kunststoffgehäuse (4) auf einer Schiene (8) gehalten sind, die in die Längsführungsrillen (18) einschiebbar ist.Lighting fixture according to Claim 1, characterized in that it has a rod profile (16) which is essentially U-shaped in cross section, in which two parallel longitudinal webs (17) with longitudinal guide grooves (18) are present, and in that all module-forming (3) plastic housings (4 ) are held on a rail (8) which can be inserted into the longitudinal guide grooves (18). Beleuchtungskörper nach Anspruch 1, dadurch gekennzeichnet, dass die LED (2) jedes Moduls in Reihe und die Module (3) untereinander parallel gespiesen (23) sind. Lighting fixture according to claim 1, characterized in that the LED (2) of each module in series and the modules (3) are fed to one another in parallel (23). Beleuchtungskörper nach Anspruch 6, dadurch gekennzeichnet, dass in den Enden der freien Flanken des U-förmigen Stangenprofiles (16) Nuten (19) vorhanden sind, in die eine transparente Kunststoffabdeckung (20) eingeschoben ist.Lighting fixture according to claim 6, characterized in that in the ends of the free flanks of the U-shaped rod profile (16) there are grooves (19) into which a transparent plastic cover (20) is inserted.
EP00810937A 2000-09-26 2000-10-11 Lighting element for refrigerator cabinets Withdrawn EP1191277A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01888/00A CH697261B1 (en) 2000-09-26 2000-09-26 Lighting for refrigeration units.
CH18882000 2000-09-26

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EP1191277A2 true EP1191277A2 (en) 2002-03-27
EP1191277A3 EP1191277A3 (en) 2004-10-20

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JP (1) JP2002163906A (en)
CN (1) CN1180217C (en)
CA (1) CA2357414A1 (en)
CH (1) CH697261B1 (en)
HK (1) HK1044980A1 (en)
HR (1) HRP20010672A2 (en)
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TW (1) TW555952B (en)

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