EP1586818A2 - Luminaire - Google Patents

Luminaire Download PDF

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Publication number
EP1586818A2
EP1586818A2 EP05008108A EP05008108A EP1586818A2 EP 1586818 A2 EP1586818 A2 EP 1586818A2 EP 05008108 A EP05008108 A EP 05008108A EP 05008108 A EP05008108 A EP 05008108A EP 1586818 A2 EP1586818 A2 EP 1586818A2
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EP
European Patent Office
Prior art keywords
prism
cover
prism cover
luminaire according
luminaire
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Granted
Application number
EP05008108A
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German (de)
French (fr)
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EP1586818A3 (en
EP1586818B1 (en
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Trilux GmbH and Co KG
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Trilux Lenze GmbH and Co KG
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Publication of EP1586818A2 publication Critical patent/EP1586818A2/en
Publication of EP1586818A3 publication Critical patent/EP1586818A3/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • 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

Definitions

  • the present invention relates to a luminaire with a direct to the bottom emitted light and a to Upper side emitted indirect light, comprising at least one aligned in the longitudinal direction of the housing Bulbs, as well as at least one prism cover below of the bulb.
  • Luminaires in which prism covers are used, the are arranged below the bulb, have been longer Time known in the art.
  • the use of a Art prism cover for the radiated downwards Light component in a so-called direct / indirect light is also known and is for example in the utility model DE 299 03 298 U1.
  • This is one comparatively flat fixture that is suspended from the ceiling Pendant luminaire emits an indirect light component upwards, which contributes to the general room lighting. In which from the lamp directly to the bottom emitted light is it important in such a suspended luminaire, that a good glare is provided.
  • a standard Luminaire for lighting, for example, office space should have a glare of those lights that under Angle exit from the lamp, which are shallower than 65 ° to Vertical, since such flat radiated light portions persons who work on computer screens.
  • the immediately emerging from the fluorescent lamps down Proportion of light directed through a luminaire grid is the immediately emerging from the fluorescent lamps down Proportion of light directed through a luminaire grid.
  • Alternatively can also be a prismatic structure for a targeted and glare-free Light distribution can be used.
  • plate-shaped light distribution elements with hollow chambers, that scatter the light. These light distribution elements with Scattering structure are in the side to the area in which the fluorescent lights are located, adjacent areas used.
  • the task of present invention therein a luminaire of the aforementioned To create type, the further improved glare characteristics has at the same time high luminous efficacy with respect to the bottom emerging from the lamp Light component.
  • At least one first Prismatic cover with a substantially longitudinal direction of the Illuminant-oriented prismatic structure is provided, and at least one second prism cover having a substantially aligned transversely to the longitudinal direction of the bulb Prism structure, wherein the second prism cover the first prism cover at least partially covered.
  • the two prism covers are predominantly or preferably almost completely overlap or overlap.
  • the first prism cover is therefore preferably in appropriate Distance below the lamp or arranged and the second prism cover can be more or less large Distance again arranged below this first prism cover become. Is a flat as possible construction of the lamp aspired, is preferably the second lower prism cover comparatively close under the first upper prism cover arranged.
  • the first prism cover preferably has underside and preferably extending in the longitudinal direction of the luminous means Prismatic structures on. These prism structures are preferably designed such that in cross section of the Prism cover, that is so transverse to the longitudinal direction of the Prism structures results in a tooth profile. Preferably it is a sawtooth profile or triangular tooth profile, wherein a symmetrical tooth profile shape is particularly preferred. Preferably the prism edges span an angle ⁇ (see FIG. 2) from 80 to 100 °, d. H.
  • the downward pointing priming surfaces are at 40 to 50 ° to the horizontal center of the lamp inclined, so that essentially orthogonal to the Prism cover striking light by double reflection is directed at the prism surfaces in the upper half space, so that the luminance of the prism plate is immediately below the bulb is reduced.
  • prism edges are flattened, so that in Cross-section transverse to the prism structure a trapezoidal structure so that the orthogonally incident light is not complete is deflected into the upper half-space.
  • the flattening can be the proportion of not in the top Half space deflected light set.
  • the flattening is rounded, preferably in the form of a circular arc (in cross-sectional view, radius R in Fig. 2), so that the continuous light is fanned out.
  • the prism structure can be a more or less strong tread depth exhibit. It is essential that the tread depth is not too is chosen large, because otherwise below the light can depict a stripe structure. Through a profile depth of 0.5 to 2 mm (H in Fig. 2), preferably less than 1.5 mm comes at a distance of no more than 10 cm from the underside of the luminaire no longer for the formation of such strip structures.
  • the first, preferably upper prism cover may preferably have a substantially flat plate shape.
  • the lower, preferably second prism cover may preferably a convex vaulted seen from the lamp base
  • the curvature radius of the Convex convex body can be 6 to 10 times the Diameter of the fluorescent tube amount, the distance the longitudinal central axis of the fluorescent tube from the longitudinal center line of the arched body preferably about 1.7 to 2.5 times the diameter of the fluorescent tube corresponds.
  • the side longitudinal edges of the first and touch second primer cover or have only a small distance on.
  • the prism structure of the second prism cover preferably has a larger prism angle.
  • the Angle between the prism surfaces 110 to 130 ° (angle ⁇ in Fig. 3), more preferably 115 to 125 °, preferably without flattening or rounding of the prism edges.
  • the prism covers are made of highly transparent material like glass or plastics, such as acrylic glass.
  • the length of the luminaire corresponds to the length of the luminaire Fluorescent tube plus the extension at both ends necessary finishing elements.
  • the horizontal transverse dimension may be 5 to 12 times the lamp diameter.
  • the luminaire according to the invention is preferably a pendant luminaire, In principle, however, comes a combination of prism covers according to the present invention, for example in a floor lamp into consideration.
  • the inventively preferred Pendant lamp is open above the bulb, so that part of the light emitted by the bulb including that deflected upwards from the first prism cover Light shines against the ceiling and from there as indirect diffused light contributes to room illumination.
  • the lamp according to the invention can also be a cultivation or Recessed luminaire with lateral light distribution chambers, the lateral vertical, the fluorescent tube facing, transparent, diffuse scattering light entry surfaces, an upper as a reflector trained cover and lower, converging to the side the reflector approximated transparent, diffusely scattering, have curved light emitting surfaces.
  • the invention in such recessed or surface mounted lights it is advantageous for aesthetic reasons, even the second Insert prismatic cover in the basic shape of a flat plate. This results because the two prism covers tight can lie on one another, a particularly low overall height Lamp.
  • both prismatic covers with curved ones Form basic structure, in particular with curvature in same direction.
  • Will the first prism cover with level Top and convex arched underside formed, wherein the prism structure is rotated with the curvature radius can a particularly good Abstrahlwinkelbegrenzung of the light source achieved with a flat angle emitted light become.
  • illuminants are used in a luminaire according to the invention preferably fluorescent lamps, one, two or more Fluorescent lamps can be used, preferably in Lenght of the lamp running and parallel to each other arranged. Especially with lights with two or more Fluorescent lamps may be advantageous down in Direction of the prism covers radiated light through a arranged above the first prism cover teilverLitete To soften the film.
  • asymmetric design of the prism structure asymmetric radiating lights available too places, for example, lights that are near room walls be attached with an asymmetric down and to equip the room wall directed lighting profile, as it Close to the wall does not depend on glare when here do not stop people.
  • the luminaire 1 essentially consists of a fluorescent lamp 2, a luminaire housing 3, a first primer cover 4 and a second prism cover 5.
  • the fluorescent lamp 2 on a suspension, not shown below the ceiling mounted lamp 1 radiates on the one hand straight up against the ceiling for indirect diffuse Room lighting.
  • the down at large opening angle on the first prism cover 4 radiated light is due to the prism diffraction on the one hand to a narrower angle, predominantly preferably deflected below 65 ° to the vertical center of the luminaire and to the Part deflected upwards, taking at this first prism cover 4 substantially no narrowing of the radiation angle takes place in the longitudinal direction of the lamp 1.
  • a second, preferably convexly curved from the room, Prism cover 5 is provided, the prism structure across the Prism structure of the first cover 4 is formed and the Therefore, a narrowing of the radiation angle in the longitudinal direction of the Light causes.
  • the first prism cover 4 a flat top and a bottom with one Prism structure on.
  • the prism structure consists of parallel to the bulb elongated prism faces, which together form an angle ⁇ of 40 to 50 ° and their prime edges by a rounding with the radius R, for example, 0.2 can be up to 0.7 mm, flattened.
  • the profile depth H The prisms can be, for example 0.5 to 1.5 mm, the Extension L of the flat flank surfaces of the prisms can be 0.2 to 1.2 mm.
  • the second prism cover has according to FIG. 3 an angle ⁇ between the downwardly directed prism edges from 110 to 125 °.

Abstract

Lighting (1) with part shining directly from its underside has a light source fitted lengthwise to the light housing (3) as well as a prism cover (4) under the light source (2). The prism cover is fitted with a prismatic structure lengthwise to the light source. A second prism cover (5) with a prism cover fitted obliquely to the first prismatic structure which has been fitted lengthwise to the light source. The second prism cover covers the first at least partly.

Description

Die vorliegende Erfindung betrifft eine Leuchte mit einem direkt zur Unterseite hin abgestrahlten Lichtanteil und einem zur Oberseite hin abgestrahlten indirekten Lichtanteil, umfassend mindestens ein in Längsrichtung des Gehäuses ausgerichtetes Leuchtmittel, sowie mindestens eine Prismenabdeckung unterhalb des Leuchtmittels.The present invention relates to a luminaire with a direct to the bottom emitted light and a to Upper side emitted indirect light, comprising at least one aligned in the longitudinal direction of the housing Bulbs, as well as at least one prism cover below of the bulb.

Leuchten, bei denen Prismenabdeckungen verwendet werden, die unterhalb des Leuchtmittels angeordnet sind, sind seit längerer Zeit aus dem Stand der Technik bekannt. Die Verwendung einer Art Prismenabdeckung für den nach unten hin abgestrahlten Lichtanteil bei einer sogenannten direkt/indirekt Leuchte ist ebenfalls bekannt und wird beispielsweise in dem Gebrauchsmuster DE 299 03 298 U1 beschrieben. Hier handelt es sich um eine vergleichsweise flache Leuchte, die als von der Decke abgehängte Pendelleuchte einen indirekten Lichtanteil nach oben abstrahlt, der zur allgemeinen Raumaufhellung beiträgt. Bei dem von der Leuchte direkt zur Unterseite hin abgestrahlten Lichtanteil ist es bei einer solchen abgehängten Leuchte wichtig, dass eine gute Entblendung vorgesehen ist. Eine normgerechte Leuchte zur Beleuchtung von beispielsweise Büroräumen sollte eine Entblendung derjenigen Lichtanteile aufweisen, die unter Winkeln aus der Leuchte austreten, die flacher sind als 65° zur Senkrechten, da solche flach abgestrahlten Lichtanteile Personen blenden können, die an Computerbildschirmen arbeiten. Bei der aus der vorgenannten Druckschrift bekannten Leuchte wird der von den Leuchtstofflampen unmittelbar nach unten austretende Lichtanteil durch ein Leuchtenraster gelenkt. Alternativ dazu kann auch eine Prismenstruktur für eine gezielte und entblendete Lichtverteilung verwendet werden. Weiterhin vorgesehen sind plattenförmige Lichtverteilungselemente mit Hohlkammern, die das Licht streuen. Diese Lichtverteilungselemente mit Streustruktur werden in den seitlich an den Bereich, in dem sich die Leuchtstofflampen befinden, angrenzenden Bereichen verwendet.Luminaires in which prism covers are used, the are arranged below the bulb, have been longer Time known in the art. The use of a Art prism cover for the radiated downwards Light component in a so-called direct / indirect light is also known and is for example in the utility model DE 299 03 298 U1. This is one comparatively flat fixture that is suspended from the ceiling Pendant luminaire emits an indirect light component upwards, which contributes to the general room lighting. In which from the lamp directly to the bottom emitted light is it important in such a suspended luminaire, that a good glare is provided. A standard Luminaire for lighting, for example, office space should have a glare of those lights that under Angle exit from the lamp, which are shallower than 65 ° to Vertical, since such flat radiated light portions persons who work on computer screens. at the known from the aforementioned document lamp is the immediately emerging from the fluorescent lamps down Proportion of light directed through a luminaire grid. Alternatively can also be a prismatic structure for a targeted and glare-free Light distribution can be used. Further provided are plate-shaped light distribution elements with hollow chambers, that scatter the light. These light distribution elements with Scattering structure are in the side to the area in which the fluorescent lights are located, adjacent areas used.

Es ist bekannt, bei Leuchten mit Leuchtmitteln in Form von Leuchtstofflampen zur Lichtlenkung "Prismenabdeckungen" mit in einer Richtung verlaufenden parallelen beabstandeten Rippen zu verwenden, die eine Art Sägezahnprofil oder Dreiecksprofil an der dem Leuchtmittel abgewandten Seite aufweisen. Durch Verwendung einer solchen Prismenabdeckung kann man durch gezielte Brechung der von dem Leuchtmittel abgestrahlten Lichtstrahlen eine verbesserte Entblendungscharakteristik erzielen. Durch den Verlauf der Rippen oder des Sägezahnprofils oder Dreiecksprofils bedingt wird die Entblendung jedoch nur in bestimmten Betrachtungsrichtungen erzielt. Schaut man aus Richtungen quer zur Hauptrichtung, in der die Entblendung erfolgt, in die Leuchte, ist die Entblendung noch nicht ausreichend.It is known in lighting with bulbs in the form of Fluorescent lamps for light control "prism covers" with in towards a direction extending parallel spaced ribs use a kind of sawtooth profile or triangle profile have the side facing away from the bulb. By using Such a prism cover can be targeted by Refraction of the emitted light rays from the lamp achieve an improved anti-glare characteristic. By the Course of the ribs or the sawtooth profile or triangular profile However, the glare is only conditionally determined in certain viewing directions achieved. Looking from directions across to the main direction in which the glare takes place in the Light, the glare is not sufficient.

Ausgehend von diesem Stand der Technik besteht die Aufgabe der vorliegenden Erfindung darin, eine Leuchte der eingangs genannten Art zu schaffen, die eine weiter verbesserte Entblendungscharakteristik aufweist bei gleichzeitig hoher Lichtausbeute bezüglich des nach unten hin aus der Leuchte austretenden Lichtanteils.Based on this prior art, the task of present invention therein, a luminaire of the aforementioned To create type, the further improved glare characteristics has at the same time high luminous efficacy with respect to the bottom emerging from the lamp Light component.

Die Lösung dieser Aufgabe liefert eine erfindungsgemäße Leuchte der eingangs genannten Art mit den kennzeichnenden Merkmalen des Hauptanspruchs.The solution to this problem provides a luminaire according to the invention of the type mentioned above with the characterizing features of the main claim.

Erfindungsgemäß ist vorgesehen, dass mindestens eine erste Prismenabdeckung mit einer im Wesentlichen in Längsrichtung des Leuchtmittels ausgerichteten Prismenstruktur vorgesehen ist, sowie mindestens eine zweite Prismenabdeckung mit einer im Wesentlichen quer zur Längsrichtung des Leuchtmittels ausgerichteten Prismenstruktur, wobei die zweite Prismenabdeckung die erste Prismenabdeckung mindestens bereichsweise überdeckt.According to the invention, it is provided that at least one first Prismatic cover with a substantially longitudinal direction of the Illuminant-oriented prismatic structure is provided, and at least one second prism cover having a substantially aligned transversely to the longitudinal direction of the bulb Prism structure, wherein the second prism cover the first prism cover at least partially covered.

Durch die Verwendung zweier Prismenabdeckungen kann man erreichen, dass die erste Prismenabdeckung in einer Hauptbetrachtungsrichtung eine effektive Entblendung bewirkt und durch die zweite Prismenabdeckung dann auch in Richtungen, die im Wesentlichen quer zu der vorgenannten Hauptbetrachtungsrichtung verlaufen eine ebenfalls effektive Entblendung erzielt wird.By using two prism covers you can achieve that the first prism cover in a main viewing direction Effective glare and caused by the second prismatic cover then also in directions that are essentially transverse to the aforementioned main observation direction an equally effective glare is achieved.

In dem für den Lichtaustritt nach unten relevanten Bereich können sich die beiden Prismenabdeckungen überwiegend oder vorzugsweise nahezu vollständig überdecken oder überlappen. Die erste Prismenabdeckung wird demnach vorzugsweise in angemessenem Abstand unterhalb des oder der Leuchtmittel angeordnet und die zweite Prismenabdeckung kann mit mehr oder weniger großem Abstand wiederum unterhalb dieser ersten Prismenabdeckung angeordnet werden. Wird eine möglichst flache Bauweise der Leuchte angestrebt, ist vorzugsweise die zweite untere Prismenabdeckung vergleichsweise nahe unter der ersten oberen Prismenabdeckung angeordnet.In the relevant area for the light emission down can the two prism covers are predominantly or preferably almost completely overlap or overlap. The first prism cover is therefore preferably in appropriate Distance below the lamp or arranged and the second prism cover can be more or less large Distance again arranged below this first prism cover become. Is a flat as possible construction of the lamp aspired, is preferably the second lower prism cover comparatively close under the first upper prism cover arranged.

Die erste Prismenabdeckung weist vorzugsweise unterseitig und vorzugsweise in Längsrichtung des Leuchtmittels sich erstreckende Prismenstrukturen auf. Diese Prismenstrukturen sind vorzugsweise derart ausgebildet, dass sich im Querschnitt der Prismenabdeckung, das heißt also quer zur Längsrichtung der Prismenstrukturen ein Zahnprofil ergibt. Vorzugsweise handelt es sich um ein Sägezahnprofil oder Dreieckszahnprofil, wobei eine symmetrische Zahnprofilform besonders bevorzugt ist. Vorzugsweise spannen die Prismenflanken einen Winkel α (siehe Fig. 2) von 80 bis 100° auf, d. h. die nach unten weisenden Primenflächen sind um 40 bis 50° gegen die horizontale Leuchtenmittelebene geneigt, so dass im Wesentlichen orthogonal auf die Prismenabdeckung auffallendes Licht durch zweifache Reflexion an den Prismenflächen in den oberen Halbraum gelenkt wird, so dass die Leuchtdichte der Prismenplatte unmittelbar unterhalb des Leuchtmittels reduziert wird.The first prism cover preferably has underside and preferably extending in the longitudinal direction of the luminous means Prismatic structures on. These prism structures are preferably designed such that in cross section of the Prism cover, that is so transverse to the longitudinal direction of the Prism structures results in a tooth profile. Preferably it is a sawtooth profile or triangular tooth profile, wherein a symmetrical tooth profile shape is particularly preferred. Preferably the prism edges span an angle α (see FIG. 2) from 80 to 100 °, d. H. the downward pointing priming surfaces are at 40 to 50 ° to the horizontal center of the lamp inclined, so that essentially orthogonal to the Prism cover striking light by double reflection is directed at the prism surfaces in the upper half space, so that the luminance of the prism plate is immediately below the bulb is reduced.

Weiter bevorzugt sind Prismenkanten abgeflacht, so dass sich im Querschnitt quer zur Prismenstruktur eine trapezartige Struktur ergibt, so dass das orthogonal auftreffende Licht nicht vollständig in den oberen Halbraum umgelenkt wird. Durch das Ausmaß der Abflachung lässt sich der Anteil des nicht in den oberen Halbraum umgelenkten Lichtes einstellen.More preferably prism edges are flattened, so that in Cross-section transverse to the prism structure a trapezoidal structure so that the orthogonally incident light is not complete is deflected into the upper half-space. By the extent the flattening can be the proportion of not in the top Half space deflected light set.

Weiterhin bevorzugt ist die Abflachung gerundet, vorzugsweise in Form eines Kreisbogens (in der Querschnittsansicht, Radius R in Fig. 2), so dass das durchgehende Licht aufgefächert wird. Die Prismenstruktur kann eine mehr oder weniger starke Profiltiefe aufweisen. Wesentlich ist, dass die Profiltiefe nicht zu groß gewählt wird, da sich andernfalls unterhalb der Leuchte eine Streifenstruktur abbilden kann. Durch eine Profiltiefe von 0,5 bis 2 mm (H in Fig. 2), bevorzugt weniger als 1,5 mm kommt es im Abstand von maximal 10 cm von der Leuchtenunterseite nicht mehr zur Ausbildung derartiger Streifenstrukturen.Further preferably, the flattening is rounded, preferably in the form of a circular arc (in cross-sectional view, radius R in Fig. 2), so that the continuous light is fanned out. The prism structure can be a more or less strong tread depth exhibit. It is essential that the tread depth is not too is chosen large, because otherwise below the light can depict a stripe structure. Through a profile depth of 0.5 to 2 mm (H in Fig. 2), preferably less than 1.5 mm comes at a distance of no more than 10 cm from the underside of the luminaire no longer for the formation of such strip structures.

Die erste, vorzugsweise obere Prismenabdeckung kann vorzugsweise eine im Wesentlichen ebene Plattenform aufweisen.The first, preferably upper prism cover may preferably have a substantially flat plate shape.

Die untere, vorzugsweise zweite Prismenabdeckung kann vorzugsweise eine von der Leuchtenunterseite her gesehen konvex gewölbte Grundform aufweisen, vorzugsweise konvex gewölbt in Querrichtung der Leuchte gesehen, das heißt quer zur Längsausrichtung des Leuchtmittels, wobei als Leuchtmittel in der Regel langgestreckte Leuchtstofflampen dienen. Der Wölbungsradius des konvex gewölbten Grundkörpers kann das 6- bis 10-fache des Durchmessers der Leuchtstoffröhre betragen, wobei der Abstand der Längsmittelachse der Leuchtstoffröhre von der Längsmittellinie des gewölbten Grundkörpers vorzugsweise etwa dem 1,7- bis 2,5-fachen Durchmesser der Leuchtstoffröhre entspricht.The lower, preferably second prism cover may preferably a convex vaulted seen from the lamp base Have basic shape, preferably convex in Seen transverse direction of the lamp, that is transverse to the longitudinal direction of the bulb, being used as a bulbs in the rule serve elongated fluorescent lamps. The curvature radius of the Convex convex body can be 6 to 10 times the Diameter of the fluorescent tube amount, the distance the longitudinal central axis of the fluorescent tube from the longitudinal center line of the arched body preferably about 1.7 to 2.5 times the diameter of the fluorescent tube corresponds.

Vorzugsweise berühren sich die Seitenlängskanten der ersten und zweiten Primenabdeckung oder weisen nur einen geringen Abstand auf.Preferably, the side longitudinal edges of the first and touch second primer cover or have only a small distance on.

Die Prismenstruktur der zweiten Prismenabdeckung weist vorzugsweise einen größeren Prismenwinkel auf. Vorzugsweise kann der Winkel zwischen den Prismenflächen 110 bis 130° (Winkel β in Fig. 3), besonders bevorzugt 115 bis 125°, betragen, vorzugsweise ohne Abflachung bzw. Rundung der Prismenkanten.The prism structure of the second prism cover preferably has a larger prism angle. Preferably, the Angle between the prism surfaces 110 to 130 ° (angle β in Fig. 3), more preferably 115 to 125 °, preferably without flattening or rounding of the prism edges.

Die Prismenabdeckungen bestehen aus hochtransparentem Material wie Glas oder Kunststoffen, wie zum Beispiel Acrylglas.The prism covers are made of highly transparent material like glass or plastics, such as acrylic glass.

Die Längsausdehnung der Leuchte entspricht der Länge der Leuchtstoffröhre zuzüglich der Ausdehnung der an beiden Enden notwendigen Abschlusselemente. Die horizontale Querausdehnung kann das 5- bis 12-fache des Leuchtmitteldurchmessers betragen.The length of the luminaire corresponds to the length of the luminaire Fluorescent tube plus the extension at both ends necessary finishing elements. The horizontal transverse dimension may be 5 to 12 times the lamp diameter.

Die erfindungsgemäße Leuchte ist vorzugsweise eine Pendelleuchte, grundsätzlich kommt aber eine Kombination der Prismenabdeckungen gemäß der vorliegenden Erfindung auch beispielsweise bei einer Stehleuchte in Betracht. Die erfindungsgemäß bevorzugte Pendelleuchte ist oberhalb des Leuchtmittels offen, so dass ein Teil des vom Leuchtmittel abgestrahlten Lichtes einschließlich das von der ersten Prismenabdeckung nach oben umlenkte Licht gegen die Raumdecke strahlt und von dort als indirektes diffuses Licht zur Raumerhellung beiträgt.The luminaire according to the invention is preferably a pendant luminaire, In principle, however, comes a combination of prism covers according to the present invention, for example in a floor lamp into consideration. The inventively preferred Pendant lamp is open above the bulb, so that part of the light emitted by the bulb including that deflected upwards from the first prism cover Light shines against the ceiling and from there as indirect diffused light contributes to room illumination.

Die erfindungsgemäße Leuchte kann aber auch eine Anbau- oder Einbauleuchte mit seitlichen Lichtverteilkammern, die seitliche vertikale, der Leuchtstoffröhre zugewandte, transparente, diffus streuende Lichteintrittsflächen, eine obere als Reflektor ausgebildete Abdeckung und untere, sich zur Seite hin konvergent dem Reflektor annähernde transparente, diffus streuende, gewölbte Lichtabstrahlflächen aufweisen. Insbesondere bei Einsatz der Erfindung bei derartigen Einbau- oder Anbauleuchten ist es aus ästhetischen Gründen vorteilhaft, auch die zweite Prismenabdeckung in der Grundform einer ebenen Platte einzusetzen. Dabei ergibt sich, da die beiden Prismenabdeckungen dicht aufeinander liegen können, eine besonders niedrige Bauhöhe der Leuchte.The lamp according to the invention can also be a cultivation or Recessed luminaire with lateral light distribution chambers, the lateral vertical, the fluorescent tube facing, transparent, diffuse scattering light entry surfaces, an upper as a reflector trained cover and lower, converging to the side the reflector approximated transparent, diffusely scattering, have curved light emitting surfaces. Especially when used the invention in such recessed or surface mounted lights it is advantageous for aesthetic reasons, even the second Insert prismatic cover in the basic shape of a flat plate. This results because the two prism covers tight can lie on one another, a particularly low overall height Lamp.

Ferner kann es vorteilhaft sein, beide Prismenabdeckung mit gewölbter Grundstruktur auszubilden, insbesondere mit Wölbung in derselben Richtung. Wird die erste Prismenabdeckung mit ebener Oberseite und konvex gewölbter Unterseite ausgebildet, wobei die Prismenstruktur mit dem Wölbungsradius gedreht wird, kann eine besonders gute Abstrahlwinkelbegrenzung des vom Leuchtmittel mit flachem Abstrahlwinkel abgestrahlten Lichtes erreicht werden.Further, it may be advantageous to have both prismatic covers with curved ones Form basic structure, in particular with curvature in same direction. Will the first prism cover with level Top and convex arched underside formed, wherein the prism structure is rotated with the curvature radius can a particularly good Abstrahlwinkelbegrenzung of the light source achieved with a flat angle emitted light become.

Als Leuchtmittel dienen bei einer erfindungsgemäßen Leuchte vorzugsweise Leuchtstofflampen, wobei eine, zwei oder mehrere Leuchtstofflampen verwendet werden können, vorzugsweise in Längsrichtung der Leuchte verlaufend und zueinander parallel angeordnet. Insbesondere bei Leuchten mit zwei oder mehr Leuchtstofflampen kann es vorteilhaft sein, das nach unten in Richtung der Prismenabdeckungen abgestrahlte Licht durch eine oberhalb der ersten Prismenabdeckung angeordnete teilverspiegelte Folie abzuschwächen.As illuminants are used in a luminaire according to the invention preferably fluorescent lamps, one, two or more Fluorescent lamps can be used, preferably in Lenght of the lamp running and parallel to each other arranged. Especially with lights with two or more Fluorescent lamps may be advantageous down in Direction of the prism covers radiated light through a arranged above the first prism cover teilverspiegelte To soften the film.

Ferner ist es möglich, durch asymmetrische Gestaltung der Prismenstruktur asymmetrisch abstrahlende Leuchten zur Verfügung zu stellen, beispielsweise Leuchten, die in der Nähe von Raumwänden angebracht werden, mit einem asymmetrisch nach unten und zur Raumwand gerichteten Beleuchtungsprofil auszustatten, da es in Wandnähe nicht auf Blendfreiheit ankommt, wenn sich hier keine Personen aufhalten.Furthermore, it is possible by asymmetric design of the prism structure asymmetric radiating lights available too places, for example, lights that are near room walls be attached with an asymmetric down and to equip the room wall directed lighting profile, as it Close to the wall does not depend on glare when here do not stop people.

Die Erfindung wird nachfolgend anhand der schematischen Figuren näher erläutert. In diesen zeigen:

Fig.1
einen senkrechten Querschnitt zur Längsachse des Leuchtmittels einer erfindungsgemäßen Pendelleuchte;
Fig. 2
eine Vergrößerung des Ausschnitts A aus Fig. 1 zur Darstellung einer besonders bevorzugten Prismenstruktur der ersten Prismenabdeckung; und
Fig. 3
eine Vergrößerung des Querschnitts B-B der Fig. 1 zur Verdeutlichung der Prismenstruktur der zweiten Prismenabdeckung.
The invention will be explained in more detail with reference to the schematic figures. In these show:
Fig.1
a vertical cross section to the longitudinal axis of the luminous means of a pendant lamp according to the invention;
Fig. 2
an enlargement of the section A of Figure 1 showing a particularly preferred prism structure of the first prism cover. and
Fig. 3
an enlargement of the cross section BB of Fig. 1 to illustrate the prism structure of the second prism cover.

Die Leuchte 1 besteht im Wesentlichen aus einer Leuchtstofflampe 2, einem Leuchtengehäuse 3, einer ersten Primenabdeckung 4 und einer zweiten Prismenabdeckung 5.The luminaire 1 essentially consists of a fluorescent lamp 2, a luminaire housing 3, a first primer cover 4 and a second prism cover 5.

Die Leuchtstofflampe 2 der an einer nicht dargestellten Aufhängung unterhalb der Raumdecke angebrachten Leuchte 1 strahlt einerseits direkt nach oben gegen die Decke zur indirekten diffusen Raumbeleuchtung.The fluorescent lamp 2 on a suspension, not shown below the ceiling mounted lamp 1 radiates on the one hand straight up against the ceiling for indirect diffuse Room lighting.

Das nach unten unter großen Öffnungswinkel auf die ersten Prismenabdeckung 4 abgestrahlte Licht wird durch die Prismenbeugung einerseits auf einen engeren Winkel, überwiegend vorzugsweise unter 65° zur vertikalen Leuchtenmittelebene abgelenkt und zum Teil nach oben umgelenkt, wobei an dieser ersten Prismenabdeckung 4 im Wesentlichen noch keine Einengung des Abstrahlwinkels in Längsrichtung der Leuchte 1 erfolgt.The down at large opening angle on the first prism cover 4 radiated light is due to the prism diffraction on the one hand to a narrower angle, predominantly preferably deflected below 65 ° to the vertical center of the luminaire and to the Part deflected upwards, taking at this first prism cover 4 substantially no narrowing of the radiation angle takes place in the longitudinal direction of the lamp 1.

Erfindungsgemäß ist unter der ersten Primenabdeckung 4 eine zweite, vorzugsweise vom Raum aus gesehen konvex gekrümmte, Prismenabdeckung 5 vorgesehen, deren Prismenstruktur quer zur Prismenstruktur der ersten Abdeckung 4 ausgebildet ist und die daher eine Einengung des Abstrahlwinkels in Längsrichtung der Leuchte bewirkt. According to the invention is under the first primer cover 4 a second, preferably convexly curved from the room, Prism cover 5 is provided, the prism structure across the Prism structure of the first cover 4 is formed and the Therefore, a narrowing of the radiation angle in the longitudinal direction of the Light causes.

Wie aus Fig. 1 und 2 erkennbar ist, weist die erste Prismenabdeckung 4 eine ebene Oberseite und eine Unterseite mit einer Prismenstruktur auf. Die Prismenstruktur besteht aus parallel zum Leuchtmittel langgestreckten Prismenflächen, die miteinander einen Winkel α von 40 bis 50° bilden und deren Primenkanten durch eine Abrundung mit dem Radius R, der beispielsweise 0,2 bis 0,7 mm betragen kann, abgeflacht sind. Die Profiltiefe H der Prismen kann beispielsweise 0,5 bis 1,5 mm betragen, die Ausdehnung L der ebenen Flankenflächen der Prismen kann 0,2 bis 1,2 mm betragen. Die zweite Prismenabdeckung weist gemäß Fig. 3 einen Winkel β zwischen den nach untern gerichteten Prismenflanken von 110 bis 125° auf. As can be seen from Figures 1 and 2, the first prism cover 4 a flat top and a bottom with one Prism structure on. The prism structure consists of parallel to the bulb elongated prism faces, which together form an angle α of 40 to 50 ° and their prime edges by a rounding with the radius R, for example, 0.2 can be up to 0.7 mm, flattened. The profile depth H The prisms can be, for example 0.5 to 1.5 mm, the Extension L of the flat flank surfaces of the prisms can be 0.2 to 1.2 mm. The second prism cover has according to FIG. 3 an angle β between the downwardly directed prism edges from 110 to 125 °.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Leuchtelamp
22
LeuchtstofflampeFluorescent Lamp
33
Leuchtengehäuseluminaire housing
44
erste Prismenabdeckungfirst prism cover
55
zweite Prismenabdeckungsecond prism cover

Claims (13)

Leuchte mit einem direkt zur Unterseite hin abgestrahlten Lichtanteil, umfassend mindestens ein Leuchtmittel (2), sowie mindestens eine Prismenabdeckung (4,5) unterhalb des Leuchtmittels, DADURCH GEKENNZEICHNET, dass mindestens eine erste Prismenabdeckung (4) mit einer im Wesentlichen in Längsrichtung des Leuchtmittels ausgerichteten Prismenstruktur vorgesehen ist, sowie mindestens eine zweite Prismenabdeckung (5) mit einer im Wesentlichen quer zur Längsrichtung des Leuchtmittels ausgerichteten Prismenstruktur, wobei die zweite Prismenabdeckung (5) die erste Prismenabdeckung (4) mindestens bereichsweise überdeckt.Luminaire with a light component radiated directly towards the underside, comprising at least one luminous means (2), and at least one prism cover (4, 5 ) below the luminous means, characterized in that at least one first prism cover (4) has a substantially longitudinal direction of the luminous means is provided aligned prismatic structure, as well as at least one second prism cover (5) with a substantially transverse to the longitudinal direction of the illuminant oriented prism structure, wherein the second prism cover (5) covers the first prism cover (4) at least partially. Leuchte nach Anspruch 1, DADURCH GEKENNZEICHNET, dass die mindestens eine erste Prismenabdeckung vorzugsweise unterseitig eine sich in Längsrichtung des Leuchtmittels erstreckende Primenstruktur aufweist.Luminaire according to claim 1, characterized in that the at least one first prism cover preferably has on its underside a priming structure extending in the longitudinal direction of the luminous means. Leuchte nach Anspruch 1 oder 2, DADURCH GEKENNZEICHNET, dass die erste Prismenabdeckung (4) eine im Wesentlichen ebene Plattenform aufweist.Luminaire according to claim 1 or 2, characterized in that the first prism cover (4) has a substantially flat plate shape. Leuchte nach einem der Ansprüche 1 bis 3, DADURCH GEKENNZEICHNET, dass die Prismenstruktur der ersten Prismenabdeckung (4) im Querschnitt als Dreiecksprofil mit abgerundeten Kanten ausgebildet ist.Luminaire according to one of claims 1 to 3, characterized in that the prism structure of the first prism cover (4) is formed in cross section as a triangular profile with rounded edges. Leuchte nach einem der Ansprüche 1 bis 4, DADURCH GEKENNZEICHNET, dass die zweite Prismenabdeckung (5) in Querrichtung der Leuchte gesehen von der Leuchtenunterseite her betrachtet eine konvex gewölbte Grundform aufweist.Luminaire according to one of claims 1 to 4, characterized in that the second prism cover (5) seen in the transverse direction of the lamp viewed from the lamp base side has a convexly curved basic shape. Leuchte nach einem der Ansprüche 1 bis 5, DADURCH GEKENNZEICHNET, dass die Prismenstruktur der zweiten Prismenabdeckung (5) als ein in Richtung quer zur Längsachse des Leuchtmittels verlaufendes Zahnprofil ausgebildet ist.Luminaire according to one of claims 1 to 5, characterized in that the prism structure of the second prism cover (5) is designed as a tooth profile extending in the direction transverse to the longitudinal axis of the luminous means. Leuchte nach einem der Ansprüche 1 bis 6, DADURCH GEKENNZEICHNET, dass die Prismenstruktur der zweiten Prismenabdeckung (5) ein Dreieckszahnprofil ist.Luminaire according to one of claims 1 to 6, characterized in that the prism structure of the second prism cover (5) is a triangular tooth profile . Leuchte nach einem der Ansprüche 1 bis 7, DADURCH GEKENNZEICHNET, dass die Prismenstruktur der ersten Prismenabdeckung (4) und/oder die Prismenstruktur der zweiten Prismenabdeckung (5) ein symmetrisches Dreiecksprofil ist.Luminaire according to one of claims 1 to 7, characterized in that the prism structure of the first prism cover (4) and / or the prism structure of the second prism cover (5) is a symmetrical triangular profile . Leuchte nach einem der Ansprüche 1 bis 8, DADURCH GEKENNZEICHNET, dass diese eine Pendelleuchte mit einem nach oben abstrahlenden Lichtanteil ist.Luminaire according to one of claims 1 to 8, characterized in that it is a pendant lamp with an upwardly radiating light component. Leuchte nach einem der Ansprüche 1 bis 9, DADURCH GEKENNZEICHNET, dass 1- oder 2-lampig mit Leuchtstofflampen ausgebildet ist.Luminaire according to one of claims 1 to 9, characterized in that 1- or 2-lamp is formed with fluorescent lamps. Leuchte nach einem der Ansprüche 1 bis 10, DADURCH GEKENNZEICHNET, dass die erste Prismenabdeckung (4) oberhalb der zweiten Prismenabdeckung (5) angeordnet ist. Luminaire according to one of claims 1 to 10, characterized in that the first prism cover (4) is arranged above the second prism cover (5). Leuchte nach einem der Ansprüche 1 bis 11, DADURCH GEKENNZEICHNET, dass das Leuchtengehäuse (3) zur Leuchtenoberseite hin im Wesentlichen offen ist.Luminaire according to one of claims 1 to 11, characterized in that the luminaire housing (3) is substantially open towards the upper side of the luminaire. Leuchte nach einem der Ansprüche 1 bis 12, DADURCH GEKENNZEICHNET, dass die erste Prismenabdeckung (4) im Bereich ihrer jeweiligen Längsränder auf den Längsrandbereichen der konvex gewölbten zweiten unteren Prismenabdeckung (5) aufliegt oder mit nur geringem Abstand oberhalb dieser angeordnet ist.Luminaire according to one of claims 1 to 12, characterized in that the first prism cover (4) rests in the region of their respective longitudinal edges on the longitudinal edge regions of the convexly curved second lower prism cover (5) or is arranged only a short distance above the latter.
EP05008108A 2004-04-15 2005-04-13 Luminaire Not-in-force EP1586818B1 (en)

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DE102004018231A DE102004018231A1 (en) 2004-04-15 2004-04-15 lamp
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AT (1) ATE462926T1 (en)
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DE102011012653B4 (en) * 2011-02-28 2013-07-25 Frensch Gmbh recessed light
DE102014004472B4 (en) * 2014-03-28 2015-11-05 Nordeon Gmbh Luminous module having an optical element

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DE19961493A1 (en) 1999-05-25 2000-11-30 Siteco Beleuchtungstech Gmbh Pendant lamp with indirect light radiation

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EP1586818A3 (en) 2006-01-11
ATE462926T1 (en) 2010-04-15
ES2341551T3 (en) 2010-06-22
DE502005009296D1 (en) 2010-05-12
EP1586818B1 (en) 2010-03-31
DE102004018231A1 (en) 2005-12-08

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