EP1467139A2 - Lighting device - Google Patents

Lighting device Download PDF

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Publication number
EP1467139A2
EP1467139A2 EP04008208A EP04008208A EP1467139A2 EP 1467139 A2 EP1467139 A2 EP 1467139A2 EP 04008208 A EP04008208 A EP 04008208A EP 04008208 A EP04008208 A EP 04008208A EP 1467139 A2 EP1467139 A2 EP 1467139A2
Authority
EP
European Patent Office
Prior art keywords
light
light source
lighting device
reflectors
light guide
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.)
Granted
Application number
EP04008208A
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German (de)
French (fr)
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EP1467139A3 (en
EP1467139B1 (en
Inventor
Christian Bartenbach
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Individual
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Individual
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Publication of EP1467139A3 publication Critical patent/EP1467139A3/en
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Classifications

    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
    • 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
    • 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
    • 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
    • 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
    • F21V7/0058—Reflectors for light sources adapted to cooperate with light sources of shapes different from point-like or linear, e.g. circular light sources
    • 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
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • 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
    • F21W2131/402—Lighting for industrial, commercial, recreational or military use for working places
    • 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 lighting device with at least one linear and essentially completely arranged within a light guide Light source and at least two at light exit openings of the light guide Arranged reflectors for angular limitation of the light radiation, of arranged between the light source and at least one reflector Light guide device each a part of the light emitted by the light source respective reflector is feasible.
  • reflectors of lighting devices serve the purpose of Angle limit light emitted light. They are in the most varied Design forms known. There is a direct one with the lighting devices Relationship between the length or height of the reflector and that of the reflector defined blanking angle. So the height of the reflector is greater, the narrower it is Light emitted by the light source is limited, or the smaller the fade-out angle should be trained. For very narrow beam arrangements of light source and reflector Therefore, the state of the art often results in an undesirably large overall height Overall arrangement.
  • At least on one side of the light source at least two reflectors at different distances from it are provided and the reflectors are arranged in such a way that their main beam direction essentially is aligned perpendicular to the longitudinal extent of the linear light source.
  • the basic principle here is that the greater the reduction in overall height, the more reflectors are used.
  • the arrangement of n reflectors makes it possible to reduce the overall height of the lighting device in proportion to 2 / n .
  • the light guide devices ensure that no light is emitted or lost at undesired angles on the way to the individual reflectors. Small blanking angles can be achieved with the lighting device according to the invention with a low overall height.
  • the main beam direction indicates the angular range in which the main part of the luminous flux is emitted by the reflectors or by the lighting device.
  • the main portion advantageously comprises 90% of the total luminous flux emitted by the reflectors or by the lighting device.
  • the lighting device as a ceiling lamp with a horizontally arranged linear light source, it is then provided, for example, that the main beam direction is essentially perpendicular to the longitudinal direction of the linear light source, that the lighting device radiates essentially upwards and / or downwards. If the light source is aligned vertically, radiation to the side can be provided accordingly, etc.
  • the light guide devices have at least one Channel with light reflecting surfaces.
  • the channel can, however, preferably in Share, also be replaced by optical fibers or the like.
  • Fig. 1 shows a lighting device according to the prior art.
  • the light source 1 is surrounded directly by two reflectors 2.
  • the masking angle ⁇ results directly from the shape of the reflectors 2 and their overall height 6 and the position of the light source 1.
  • the overall height 6 must be chosen the greater the stronger the light emitted spatially concentrated, or the smaller the masking angle ⁇ should be chosen.
  • the Operating device 5 in which the power supply for the light source 1 and the like is arranged, is usually arranged above the reflectors 2, which is the Total height of the lighting device again by the height of 7 Operating device 5 enlarged.
  • a lighting device in which the Light from a light source 1 through the light guide 3 to one side of the Light source 1 arranged reflectors 2 guided and from there to achieve a Fade out angle ⁇ is emitted.
  • the Light from a light source 1 through the light guide 3 to one side of the Light source 1 arranged reflectors 2 guided and from there to achieve a Fade out angle ⁇ is emitted.
  • the cross section 18 is advantageously in the area directly around the light source 10 1.0 to 1.5 times, preferably 1.25 times that parallel to the cross section 18 Projection of the light source 1.
  • each reflector 2 its own, channel-shaped, surrounded by the walls 4
  • Light guide device 3 is provided, these channels being essentially parallel to one another run.
  • the respective light exit cross-sectional area 13 of the light guide device 3 am
  • reflector 2 is smaller than the parallel projection of the Cross-sectional area of the light source 1.
  • the reflectors 2 advantageously have a section 14 curved in the shape of a circular arc and a section 15 curved in a parabolic shape.
  • the center point of the arcuate section 14 and / or the parabolic focal point of the parabolic curve section 15 are preferably on the lower edge 19 of the light exit cross-sectional area 13.
  • the main beam direction predetermined by the parabolic curve section 14 preferably coincides with the masking angle ⁇ .
  • the reflectors 2 are advantageously arranged in each case at a light exit opening 16 of the light-guiding device on its side facing away from the light source 1.
  • the reflectors 2 and / or the light guide 3 symmetrical are arranged with respect to an axis or plane running through the light source 1. It however, asymmetrical variants are also possible, as shown in FIG. 12. Here is the Light source 1 is surrounded on one side by a back reflector 20.
  • the variant according to the invention shown in FIG. 3 offers a good compromise Height reduction and luminaire detailing. While in the embodiment 2, 3, 7 and 8, the light source 1 substantially completely within the 4 and 5 show alternative possibilities for this, in which one of two reflectors 2 comprises light exit opening 16 in the area of the Light source 1 or is arranged directly below. This is a minimal Luminaire width achievable with reduced overall height.
  • the invention Lighting devices can basically be round or oblong have extended shape and various other intermediate forms. Especially with the However, workplace lighting provides an inexpensive variant that the Lighting device is elongated. As linear or elongated light sources 1 can for example fluorescent tubes, preferably with a diameter between 16 mm and 26 mm, halogen lamps or an arrangement of several, linearly arranged Point light sources are used.
  • longitudinal suppression in the longitudinal direction of the linear light source 1 can be achieved by in the area of the reflectors 2 and / or within the light guide 3 slats 10 or at least one mirror raster optics 9 or prisms 11 are arranged.
  • Louvre optics 9 are known in the prior art and can be designed in different forms his.
  • a structurally particularly simple type of longitudinal blanking is provided by Slats 10 arranged directly next to the light source 1 are reached.
  • the shape of the slats can in turn be chosen according to the prior art.
  • Favorable shapes are known from lamellae 10 used in mirror raster optics 9. Instead of the slats 10, as shown in FIG.
  • prisms 11 can also be used for longitudinal blanking become.
  • the advantages of the arrangement of the slats 10 and the prisms 11 directly next to the Light source 1 and within the light guide device 3 are high Efficiency, since the lamp is reflected in the immediate vicinity of the light source 1 and on the other hand in the fact that with a single row of lamellae 10 or a single prism 11 which extends along the light source 1 and which consists of several Light exit openings 16 light emerging in the longitudinal direction of the linear light source 1 is hidden.
  • 11a and 11b show a plan view of a section of a linear light source 1, such as the slats 10 relative to the light source in the light guide device 3 can be arranged.
  • the example of beams 17 Longitudinal blanking effect of the mirrored slats 10 is shown.
  • mirror louvre optics 9 When using mirror louvre optics 9, there must be one at each light exit opening 16 own mirror raster optics 9 can be arranged to have the same longitudinal masking effect to reach.
  • FIG. 6a and 6b show different detailed configurations of the light guide device 3 in the area of the light source 1.
  • the involutes 8 shown in FIG. 6a make it possible Reduce retroreflection of light in the lamp as much as possible while at of the particularly simple variant shown in FIG. 6b has a minimal overall height Light guide device 3 results.
  • the reflectors and / or the wall 4 of the light guide device 3 and / or - if present - the slats 10 or mirror grid optics 9 or Back reflector 20 have surfaces with a light reflectance of greater than 90%. Further improved variants provide degrees of reflection greater than 95% or greater than 98%. Around to achieve these high degrees of reflection of the surfaces of the walls 4, these can for example with the manufacturer's MIRO 2 or MIRO SILVER reflector materials Alanod or be coated with 3M reflector film VM 2000.
  • the cut-out angle ⁇ is at a light exit opening 16 through the course of the reflector 2 specified.
  • additional Apertures 12 as shown in Fig. 10a and 10b, can be achieved, these being convenient also have highly reflective surfaces.
  • the lighting device shown is for Cross-suppression tuned to a fade-out angle of 30 °.
  • the longitudinal blanking can be achieved by the fins 10, as shown in Fig. 11b.
  • the specific Embodiment achieved blanking angle of the longitudinal blanking is also 30 °.
  • the slats 10 have a length 23 of 45 mm and a distance 28 of 35.5 mm on.
  • the smallest width of the lamella 10 in this example is 1 mm, the largest Width 18.5 mm.
  • the overall height 25 of the embodiment is 46 mm Overall width 24 320 mm.
  • the widths 21 are 40 mm.
  • the lower width 22 of the central diaphragm body 27 has 80 mm.
  • Different blanking angles can be achieved by the design variants according to the invention ⁇ , but preferably angle ⁇ , between 25 ° and 60 °, in a particularly preferred manner between 30 ° and 45 °, with a significantly reduced overall height compared to the prior art the lighting device. See preferred versions 4 to 6 reflectors in front.
  • slats or prisms with linear light sources 1 can also have a longitudinal blanking any angular ranges, preferably between 25 ° and 60 °, particularly preferably between 30 ° and 45 ° can be ensured. It also reduces that to the entire width the mean luminance related to the lighting device with increasing Lights width.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Polarising Elements (AREA)
  • Vehicle Body Suspensions (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Planar Illumination Modules (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Seal Device For Vehicle (AREA)

Abstract

The arrangement has at least one linear light source (1) essentially fully within a light conductor (3) and at least two reflectors (2) at the light outlet openings (16) of the light conductor for bounding the angular range of radiation. There are at least two reflectors on one side of the light source at different distances and arranged so that their main beam direction is essentially perpendicular to the longitudinal direction of the linear light source.

Description

Die vorliegende Erfindung betrifft eine Beleuchtungsvorrichtung mit mindestens einer linearen und im Wesentlichen vollständig innerhalb einer Lichtleiteinrichtung angeordneten Lichtquelle und mindestens zwei an Lichtaustrittsöffnungen der Lichtleiteinrichtung angeordneten Reflektoren zur winkelmäßigen Begrenzung der Lichtabstrahlung, wobei von der zwischen der Lichtquelle und jeweils mindestens einem Reflektor angeordneten Lichtleiteinrichtung jeweils ein Teil des von der Lichtquelle abgestrahlten Lichts zum jeweiligen Reflektor führbar ist.The present invention relates to a lighting device with at least one linear and essentially completely arranged within a light guide Light source and at least two at light exit openings of the light guide Arranged reflectors for angular limitation of the light radiation, of arranged between the light source and at least one reflector Light guide device each a part of the light emitted by the light source respective reflector is feasible.

Reflektoren von Beleuchtungsvorrichtungen dienen unter anderem dazu, das von der Lichtquelle ausgesandte Licht winkelmäßig zu begrenzen. Sie sind in unterschiedlichsten Ausgestaltungsformen bekannt. Bei den Beleuchtungsvorrichtungen existiert ein direkter Zusammenhang zwischen der Länge bzw. Bauhöhe des Reflektors und dem vom Reflektor definierten Ausblendwinkel. So ist die Bauhöhe des Reflektors umso größer, je enger das von der Lichtquelle abgestrahlte Licht eingegrenzt, bzw. je kleiner der Ausblendwinkel ausgebildet werden soll. Für sehr eng strahlende Anordnungen aus Lichtquelle und Reflektor ergibt sich daher beim Stand der Technik eine oftmals unerwünscht große Bauhöhe der Gesamtanordnung.Among other things, reflectors of lighting devices serve the purpose of Angle limit light emitted light. They are in the most varied Design forms known. There is a direct one with the lighting devices Relationship between the length or height of the reflector and that of the reflector defined blanking angle. So the height of the reflector is greater, the narrower it is Light emitted by the light source is limited, or the smaller the fade-out angle should be trained. For very narrow beam arrangements of light source and reflector Therefore, the state of the art often results in an undesirably large overall height Overall arrangement.

Gattungsgemäße Beleuchtungsvorrichtungen mit zwei Reflektoren sind zum Beispiel aus der US 4,622,624, der US 4,794,501, der DE 36 00 915 und der EP 0 235 652 bekannt. Bei all diesen Leuchten ist jeweils ein Reflektor auf einer Seite und der andere Reflektor auf der anderen Seite de Lichtquelle angeordnet. Obwohl bei entsprechender Dimensionierung der Lichtleiteinrichtung auch mit diesen Leuchten bereits eine flachere Bauweise der Beleuchtungsvorrichtung erzielt wird, kann ihre Bauhöhe für manche Anwendungen noch nicht ausreichend reduziert werden.Generic lighting devices with two reflectors are for example from the US 4,622,624, US 4,794,501, DE 36 00 915 and EP 0 235 652 are known. With all These lights each have a reflector on one side and the other reflector on the arranged on the other side of the light source. Although with the appropriate dimensioning Light guide device with these lights already has a flatter design Lighting device is achieved, its height can still be used for some applications not be reduced sufficiently.

Daher ist es Aufgabe der vorliegenden Erfindung, gattungsgemäße Beleuchtungsvorrichtungen dahingehend zu verbessern, dass eng strahlende Anordnungen bei gleichzeitig möglichst geringer Bauhöhe realisiert werden können.It is therefore an object of the present invention, generic Lighting devices to improve narrow-beam arrangements can be realized at the same time as low as possible.

Dies wird erfindungsgemäß erreicht, indem zumindest auf einer Seite der Lichtquelle zumindest zwei von dieser unterschiedlich weit entfernte Reflektoren vorgesehen sind und die Reflektoren in der Weise angeordnet sind, dass ihre Hauptstrahlrichtung im Wesentlichen senkrecht zur Längserstreckung der linearen Lichtquelle ausgerichtet ist. This is achieved according to the invention by at least on one side of the light source at least two reflectors at different distances from it are provided and the reflectors are arranged in such a way that their main beam direction essentially is aligned perpendicular to the longitudinal extent of the linear light source.

Durch diese Maßnahme können Reflektoren mit kleinerer Bauhöhe verwendet werden, was zu einer Reduzierung der Gesamtbauhöhe der Beleuchtungsvorrichtung führt. Hierbei gilt grundsätzlich, dass eine umso größere Reduzierung der Bauhöhe erreichbar ist, je mehr Reflektoren verwendet werden. So ist durch die Anordnung von n Reflektoren eine Verkleinerung der Bauhöhe der Beleuchtungsvorrichtung proportional zu 2/n möglich. Die Lichtleiteinrichtungen sorgen dafür, dass kein Licht auf dem Weg zu den einzelnen Reflektoren in ungewünschte Winkel abgestrahlt wird bzw. verloren geht. Kleine Ausblendwinkel können mit der erfindungsgemäßen Beleuchtungsvorrichtung bei gleichzeitig geringer Bauhöhe realisiert werden. Die Hauptstrahlrichtung gibt dabei denjenigen Winkelbereich an, in den der Hauptanteil des Lichtstroms von den Reflektoren bzw. von der Beleuchtungsvorrichtung abgestrahlt wird. Der Hauptanteil umfasst günstigerweise 90 % des insgesamt von den Reflektoren bzw. von der Beleuchtungsvorrichtung abgestrahlten Lichtstroms. Bei einer Ausführung der Beleuchtungsvorrichtung als Deckenleuchte mit horizontal angeordneter linearer Lichtquelle ist bei im Wesentlichen senkrechter Ausrichtung der Hauptstrahlrichtung zur Längsrichtung der linearen Lichtquelle dann zum Beispiel vorgesehen, dass die Beleuchtungsvorrichtung im Wesentlichen nach oben und/oder unten abstrahlt. Bei vertikaler Ausrichtung der Lichtquelle kann entsprechend eine Abstrahlung zur Seite vorgesehen sein, etc..This measure allows reflectors with a smaller overall height to be used, which leads to a reduction in the overall overall height of the lighting device. The basic principle here is that the greater the reduction in overall height, the more reflectors are used. The arrangement of n reflectors makes it possible to reduce the overall height of the lighting device in proportion to 2 / n . The light guide devices ensure that no light is emitted or lost at undesired angles on the way to the individual reflectors. Small blanking angles can be achieved with the lighting device according to the invention with a low overall height. The main beam direction indicates the angular range in which the main part of the luminous flux is emitted by the reflectors or by the lighting device. The main portion advantageously comprises 90% of the total luminous flux emitted by the reflectors or by the lighting device. In the case of a design of the lighting device as a ceiling lamp with a horizontally arranged linear light source, it is then provided, for example, that the main beam direction is essentially perpendicular to the longitudinal direction of the linear light source, that the lighting device radiates essentially upwards and / or downwards. If the light source is aligned vertically, radiation to the side can be provided accordingly, etc.

In einer günstigen Ausführungsvariante weisen die Lichtleiteinrichtungen wenigstens einen Kanal mit lichtreflektierenden Oberflächen auf. Der Kanal kann jedoch, vorzugsweise in Teilen, auch durch Lichtleitfasern oder dergleichen ersetzt sein.In a favorable embodiment variant, the light guide devices have at least one Channel with light reflecting surfaces. The channel can, however, preferably in Share, also be replaced by optical fibers or the like.

Weitere Einzelheiten und Merkmale der vorliegenden Erfindung ergeben sich aus der nachfolgenden Figurenbeschreibung. Dabei zeigt:

Fig. 1 und 2
Beleuchtungsvorrichtungen nach dem Stand der Technik,
Fig. 3 bis 5
verschiedene erfindungsgemäße Ausführungsformen mit mehreren Reflektoren,
Fig. 6a und 6b
Details zur Ausgestaltung der Lichtleiteinrichtungen im Bereich der Lichtquelle,
Fig. 7
eine Ausführungsform mit mehreren parallel verlaufenden Lichtleiteinrichtungen,
Fig. 8
ein erfindungsgemäßes Ausführungsbeispiel mit zusätzlichen Lamellen bzw. Spiegelrasteroptiken,
Fig. 9
eine Alternative zu den in Fig. 8 gezeigten Lamellen
Fig. 10a und 10b
Detailansichten zur Ausbildung der Reflektoren,
Fig. 11a und 11b
eine Draufsicht auf einen Abschnitt einer linearen Lichtquelle mit daneben angeordneten Lamellen,
Fig. 12
eine asymmetrisch ausgeführte Variante und
Fig. 13
ein weiteres bevorzugtes Ausführungsbeispiel.
Further details and features of the present invention result from the following description of the figures. It shows:
1 and 2
State of the art lighting devices,
3 to 5
different embodiments according to the invention with several reflectors,
6a and 6b
Details on the design of the light guide devices in the area of the light source,
Fig. 7
an embodiment with a plurality of light guide devices running in parallel,
Fig. 8
an embodiment according to the invention with additional slats or mirror grid optics,
Fig. 9
an alternative to the slats shown in Fig. 8
10a and 10b
Detailed views for the formation of the reflectors,
11a and 11b
2 shows a plan view of a section of a linear light source with lamellae arranged next to it,
Fig. 12
an asymmetrical version and
Fig. 13
another preferred embodiment.

Fig. 1 zeigt eine Beleuchtungsvorrichtung nach dem Stand der Technik. Die Lichtquelle 1 ist hierbei direkt von zwei Reflektoren 2 umgeben. Der Ausblendwinkel γ ergibt sich unmittelbar aus der Form der Reflektoren 2 sowie deren Bauhöhe 6 und der Position der Lichtquelle 1. Die Bauhöhe 6 muss umso größer gewählt werden, je stärker das abgestrahlte Licht räumlich konzentriert, bzw. je kleiner der Ausblendwinkel γ gewählt werden soll. Das Betriebsgerät 5, in dem die Stromversorgung für die Lichtquelle 1 und dergleichen angeordnet ist, wird in der Regel oberhalb der Reflektoren 2 angeordnet, womit sich die Gesamtbauhöhe der Beleuchtungsvorrichtung noch einmal um die Höhe 7 des Betriebsgerätes 5 vergrößert.Fig. 1 shows a lighting device according to the prior art. The light source 1 is surrounded directly by two reflectors 2. The masking angle γ results directly from the shape of the reflectors 2 and their overall height 6 and the position of the light source 1. The overall height 6 must be chosen the greater the stronger the light emitted spatially concentrated, or the smaller the masking angle γ should be chosen. The Operating device 5 in which the power supply for the light source 1 and the like is arranged, is usually arranged above the reflectors 2, which is the Total height of the lighting device again by the height of 7 Operating device 5 enlarged.

In Fig. 2 ist eine Beleuchtungsvorrichtung nach dem Stand der Technik gezeigt, bei der das Licht einer Lichtquelle 1 durch die Lichtleiteinrichtung 3 zu auf jeweils einer Seite der Lichtquelle 1 angeordneten Reflektoren 2 geführt und von dort unter Erzielung eines Ausblendwinkels γ abgestrahlt wird. Durch das Vorsehen von Löchern in der unteren Wandung 4 oder bei abgehängten Lampen auch in der oberen Wandung 4, kann eine direkte wie auch indirekte zusätzliche Lichtabstrahlung erreicht werden. Alternativ zu den Löchern kann die Wandung auch teiltransparent oder, wie weiter unten dargelegt, vollständig geschlossen und nach innen reflektierend ausgeführt sein.In Fig. 2, a lighting device according to the prior art is shown, in which the Light from a light source 1 through the light guide 3 to one side of the Light source 1 arranged reflectors 2 guided and from there to achieve a Fade out angle γ is emitted. By providing holes in the lower one Wall 4 or, in the case of suspended lamps, also in the upper wall 4, can be a direct one as well as indirect additional light radiation can be achieved. Alternative to the holes the wall can also be partially transparent or, as explained below, completely closed and reflective inside.

Bei erfindungsgemäßen Beleuchtungsvorrichtungen wird nun ausgenutzt, dass sich die Gesamthöhe der Beleuchtungsvorrichtung mit zunehmender Anzahl der Reflektoren 2 reduziert. Daher sehen günstige erfindungsgemäße Ausführungsformen eine Kaskade von mehreren, hintereinander liegenden Reflektoren 2 vor, wie dies zum Beispiel in den Fig. 3, 4, 5 und 7 und 8 sowie 12 und 13 gezeigt ist. In den Ausführungsbeispielen gemäß Fig. 3, 5 und 8 verjüngt sich die Querschnittsfläche 18 der Lichtleiteinrichtung 3 mit zunehmender Entfernung von der Lichtquelle 1, immer auf der von der Lichtquelle 1 abgewandten Seite eines Reflektors 2. In lighting devices according to the invention, use is now made of the fact that the Total height of the lighting device with an increasing number of reflectors 2 reduced. Therefore, favorable embodiments according to the invention see a cascade of a plurality of reflectors 2 lying one behind the other, as shown, for example, in FIGS. 3, 4, 5 and 7 and 8 and 12 and 13 is shown. 3, 5 and 8 the cross-sectional area 18 of the light guide device 3 tapers with increasing Distance from the light source 1, always on the side facing away from the light source 1 a reflector 2.

Im Bereich direkt um die Lichtquelle 10 beträgt der Querschnitt 18 günstigerweise das 1,0 bis 1,5-fache, vorzugsweise das 1,25-fache, der zum Querschnitt18 parallelen Projektion der Lichtquelle 1.The cross section 18 is advantageously in the area directly around the light source 10 1.0 to 1.5 times, preferably 1.25 times that parallel to the cross section 18 Projection of the light source 1.

In Fig. 7 ist eine Alternative zu den sich verjüngenden Lichtleiteinrichtungen 3 gezeigt. Hier ist für jeden Reflektor 2 eine eigene, von den Wandungen 4 umgebene, kanalförmige Lichtleiteinrichtung 3 vorgesehen, wobei diese Kanäle im Wesentlichen parallel zueinander verlaufen. Die jeweilige Lichtaustrittsquerschnittsfläche 13 der Lichtleiteinrichtung 3 am Reflektor 2 ist bei beiden Varianten kleiner als die hierzu parallele Projektion der Querschnittsfläche der Lichtquelle 1.7 shows an alternative to the tapered light-guiding devices 3. Here is for each reflector 2 its own, channel-shaped, surrounded by the walls 4 Light guide device 3 is provided, these channels being essentially parallel to one another run. The respective light exit cross-sectional area 13 of the light guide device 3 am In both variants, reflector 2 is smaller than the parallel projection of the Cross-sectional area of the light source 1.

Die Reflektoren 2 weisen günstigerweise einen kreisbogenförmig gekrümmten Abschnitt 14 und einen parabelförmig gekrümmten Abschnitt 15 auf. Der Mittelpunkt des kreisbogenförmig gekrümmten Abschnitts 14 und/oder der Parabelbrennpunkt des parabelförmig gekrümmten Abschnitts 15 liegen bevorzugt auf der unteren Kante 19 der Lichtaustrittsquerschnittsfläche 13. Die durch den parabelförmig gekrümmten Abschnitt 14 vorgegebene Hauptstrahlrichtung fällt bevorzugt mit dem Ausblendwinkel γ zusammen. Die Reflektoren 2 sind günstigerweise in diesem, wie auch den anderen Ausführungsbeispielen jeweils an einer Lichtaustrittsöffnung 16 der Lichtleiteinrichtung auf deren von der Lichtquelle 1 abgewandten Seite angeordnet.The reflectors 2 advantageously have a section 14 curved in the shape of a circular arc and a section 15 curved in a parabolic shape. The center point of the arcuate section 14 and / or the parabolic focal point of the parabolic curve section 15 are preferably on the lower edge 19 of the light exit cross-sectional area 13. The main beam direction predetermined by the parabolic curve section 14 preferably coincides with the masking angle γ . In this, as in the other exemplary embodiments, the reflectors 2 are advantageously arranged in each case at a light exit opening 16 of the light-guiding device on its side facing away from the light source 1.

Wie an den verschiedenen Ausführungsbeispielen gezeigt, ist es günstig, aber nicht zwingend notwendig, dass die Reflektoren 2 und/oder die Lichtleiteinrichtung 3 symmetrisch bezüglich einer durch die Lichtquelle 1 verlaufenden Achse bzw. Ebene angeordnet sind. Es sind jedoch auch asymmetrische Varianten möglich, wie dies Fig. 12 zeigt. Hier ist die Lichtquelle 1 auf einer Seite von einem Rückreflektor 20 umgeben.As shown in the various embodiments, it is cheap, but not imperative that the reflectors 2 and / or the light guide 3 symmetrical are arranged with respect to an axis or plane running through the light source 1. It however, asymmetrical variants are also possible, as shown in FIG. 12. Here is the Light source 1 is surrounded on one side by a back reflector 20.

Die in Fig. 3 dargestellte erfindungsgemäße Variante bietet einen guten Kompromiss aus Bauhöhenreduzierung und Leuchtendetaillierung. Während in dem Ausführungsbeispiel gemäß den Fig. 2, 3, 7 und 8 die Lichtquelle 1 im wesentlichen vollständig innerhalb der Lichtleiteinrichtung 3 angeordnet ist, zeigen die Fig. 4 und 5 hierzu alternative Möglichkeiten, bei denen eine von zwei Reflektoren 2 umfasste Lichtaustrittsöffnung 16 im Bereich der Lichtquelle 1 bzw. direkt unterhalb angeordnet ist. Hierdurch ist eine minimale Leuchtenbreite bei gleichzeitig reduzierter Bauhöhe erzielbar. Die erfindungsgemäßen Beleuchtungsvorrichtungen können grundsätzlich eine runde, wie auch eine länglich erstreckte Form sowie verschiedene andere Zwischenformen aufweisen. Besonders bei der Beleuchtung von Arbeitsplätzen sieht eine günstige Variante jedoch vor, dass die Beleuchtungsvorrichtung länglich erstreckt ist. Als lineare bzw. längserstreckte Lichtquellen 1 können zum Beispiel Leuchtstoffröhren, vorzugsweise mit einem Durchmesser zwischen 16 mm und 26 mm, Halogenlampen oder eine Anordnung von mehreren, linear angeordneten Punktlichtquellen verwendet werden.The variant according to the invention shown in FIG. 3 offers a good compromise Height reduction and luminaire detailing. While in the embodiment 2, 3, 7 and 8, the light source 1 substantially completely within the 4 and 5 show alternative possibilities for this, in which one of two reflectors 2 comprises light exit opening 16 in the area of the Light source 1 or is arranged directly below. This is a minimal Luminaire width achievable with reduced overall height. The invention Lighting devices can basically be round or oblong have extended shape and various other intermediate forms. Especially with the However, workplace lighting provides an inexpensive variant that the Lighting device is elongated. As linear or elongated light sources 1 can for example fluorescent tubes, preferably with a diameter between 16 mm and 26 mm, halogen lamps or an arrangement of several, linearly arranged Point light sources are used.

Zusätzlich zu der durch die Reflektoren 2 sichergestellten Querausblendung kann auch noch eine Längsausblendung in Längsrichtung der linearen Lichtquelle 1 erreicht werden, indem im Bereich der Reflektoren 2 und/oder innerhalb der Lichtleiteinrichtung 3 Lamellen 10 oder mindestens eine Spiegelrasteroptik 9 oder Prismen 11 angeordnet sind. Spiegelrasteroptiken 9 sind beim Stand der Technik bekannt und können in unterschiedlichen Formen ausgeführt sein. Eine konstruktiv besonders einfache Art der Längsausblendung wird jedoch durch direkt neben der Lichtquelle 1 angeordnete Lamellen 10 erreicht. Die Form der Lamellen kann wiederum gemäß dem Stand der Technik gewählt werden. Günstige Formgebungen sind von in Spiegelrasteroptiken 9 verwendeten Lamellen 10 bekannt. Anstelle der Lamellen 10 können auch, wie in Fig. 9 dargestellt, Prismen 11 zur Längsausblendung verwendet werden. Die Vorteile der Anordnung der Lamellen 10 und der Prismen 11 direkt neben der Lichtquelle 1 und innerhalb der Lichtleiteinrichtung 3 liegen zum einen im hohen Wirkungsgrad, da die Lampenrückstrahlung in direkter Nähe der Lichtquelle 1 erfolgt und zum anderen in der Tatsache, dass mit einer einzigen Reihe von Lamellen 10 bzw. mit einem einzigen, entlang der Lichtquelle 1 erstreckten Prisma 11 das aus mehreren Lichtaustrittsöffnungen 16 austretende Licht in Längsrichtung der linearen Lichtquelle 1 ausgeblendet ist. Die Fig. 11a und 11b zeigen in einer Draufsicht auf einen Abschnitt einer linearen Lichtquelle 1, wie die Lamellen 10 relativ zur Lichtquelle in der Lichtleiteinrichtung 3 angeordnet sein können. Darüber hinaus ist an beispielhaften Strahlen 17 die Längsausblendwirkung der verspiegelten Lamellen 10 gezeigt.In addition to the cross suppression ensured by the reflectors 2, it is also possible longitudinal suppression in the longitudinal direction of the linear light source 1 can be achieved by in the area of the reflectors 2 and / or within the light guide 3 slats 10 or at least one mirror raster optics 9 or prisms 11 are arranged. Louvre optics 9 are known in the prior art and can be designed in different forms his. A structurally particularly simple type of longitudinal blanking is provided by Slats 10 arranged directly next to the light source 1 are reached. The shape of the slats can in turn be chosen according to the prior art. Favorable shapes are known from lamellae 10 used in mirror raster optics 9. Instead of the slats 10, as shown in FIG. 9, prisms 11 can also be used for longitudinal blanking become. The advantages of the arrangement of the slats 10 and the prisms 11 directly next to the Light source 1 and within the light guide device 3 are high Efficiency, since the lamp is reflected in the immediate vicinity of the light source 1 and on the other hand in the fact that with a single row of lamellae 10 or a single prism 11 which extends along the light source 1 and which consists of several Light exit openings 16 light emerging in the longitudinal direction of the linear light source 1 is hidden. 11a and 11b show a plan view of a section of a linear light source 1, such as the slats 10 relative to the light source in the light guide device 3 can be arranged. In addition, the example of beams 17 Longitudinal blanking effect of the mirrored slats 10 is shown.

Bei der Verwendung von Spiegelrasteroptiken 9 muss an jeder Lichtaustrittsöffnung 16 eine eigene Spiegelrasteroptik 9 angeordnet werden, um den gleichen Längsausblendungseffekt zu erreichen.When using mirror louvre optics 9, there must be one at each light exit opening 16 own mirror raster optics 9 can be arranged to have the same longitudinal masking effect to reach.

Unabhängig davon, welche Variante der Längsausblendung gewählt wird, erreicht man durch die gezeigten Möglichkeiten eine weiter verbesserte Rundumausblendung, insbesondere bei Verwendung von modernen 3D-Spiegelrasterlamellen 10. Regardless of which variant of longitudinal blanking is selected, you can achieve this through the possibilities shown a further improved all-round blanking, especially when using modern 3D mirror louvres 10.

Die Fig. 6a und 6b zeigen verschiedene Detailausgestaltungen der Lichtleiteinrichtung 3 im Bereich der Lichtquelle 1. Die in Fig. 6a gezeigten Evolventen 8 ermöglichen es die Rückstrahlung von Licht in die Lampe soweit wie möglich zu reduzieren, während sich bei der in Fig. 6b gezeigten, besonders einfachen Variante eine minimale Bauhöhe der Lichtleiteinrichtung 3 ergibt.6a and 6b show different detailed configurations of the light guide device 3 in the area of the light source 1. The involutes 8 shown in FIG. 6a make it possible Reduce retroreflection of light in the lamp as much as possible while at of the particularly simple variant shown in FIG. 6b has a minimal overall height Light guide device 3 results.

Um die Lichtverluste innerhalb der Beleuchtungsvorrichtung zu minimieren ist günstigerweise vorgesehen, dass die Reflektoren und/oder die Wandung 4 der Lichtleiteinrichtung 3 und/oder - falls vorhanden - die Lamellen 10 oder Spiegelrasteroptiken 9 oder der Rückreflektor 20 Oberflächen mit einem Lichtreflexionsgrad von größer 90% aufweisen. Weiter verbesserte Varianten sehen Reflektionsgrade größer 95% oder größer 98% vor. Um diese hohen Reflektionsgrade der Oberflächen der Wandungen 4 zu erreichen, können diese zum Beispiel mit den Reflektormaterialien MIRO 2 oder MIRO SILVER des Herstellers Alanod oder mit der Reflektorfolie VM 2000 des Herstellers 3M beschichtet sein.In order to minimize the loss of light within the lighting device, it is expedient provided that the reflectors and / or the wall 4 of the light guide device 3 and / or - if present - the slats 10 or mirror grid optics 9 or Back reflector 20 have surfaces with a light reflectance of greater than 90%. Further improved variants provide degrees of reflection greater than 95% or greater than 98%. Around to achieve these high degrees of reflection of the surfaces of the walls 4, these can for example with the manufacturer's MIRO 2 or MIRO SILVER reflector materials Alanod or be coated with 3M reflector film VM 2000.

Grundsätzlich ist an einer Lichtaustrittsöffnung 16 der Ausblendwinkel γ durch den Verlauf des Reflektors 2 vorgegeben. Eine weitere Einengung kann jedoch durch zusätzliche Blenden 12, wie in Fig. 10a und 10b gezeigt, erreicht werden, wobei diese günstigerweise ebenfalls hoch reflektierende Oberflächen aufweisen.Basically, the cut-out angle γ is at a light exit opening 16 through the course of the reflector 2 specified. However, further narrowing can be achieved by additional Apertures 12, as shown in Fig. 10a and 10b, can be achieved, these being convenient also have highly reflective surfaces.

Fig. 13 zeigt ein bevorzugtes Ausführungsbeispiel. Hier sind die Wandungen 4 zum Teil durch Blendenkörper 27 gebildet, in die Zusatzgeräte, Gegengewichte oder andere Einbauten 26 integriert sein können. Die gezeigte Beleuchtungsvorrichtung ist zur Querausblendung auf einen Ausblendwinkel von 30° abgestimmt. Die Längsausblendung kann durch die Lamellen 10, wie in Fig. 11b gezeigt, erreicht werden. Der im konkreten Ausführungsbeispiel erreichte Ausblendwinkel der Längsausblendung beträgt ebenfalls 30°. Hierzu weisen die Lamellen 10 eine Länge 23 von 45 mm und einen Abstand 28 von 35,5 mm auf. Die kleinste Breite der Lamelle 10 beträgt in diesem Beispiel 1 mm, die größte Breite 18,5 mm. Die Gesamtbauhöhe 25 des Ausführungsbeispiels beträgt 46 mm, die Gesamtbreite 24 320 mm. Die Breiten 21 betragen 40 mm. Die untere Breite 22 des zentralen Blendenkörpers 27 weist 80 mm.13 shows a preferred embodiment. Here are part of the walls 4 formed by panel body 27, in the accessories, counterweights or others Internals 26 can be integrated. The lighting device shown is for Cross-suppression tuned to a fade-out angle of 30 °. The longitudinal blanking can be achieved by the fins 10, as shown in Fig. 11b. The specific Embodiment achieved blanking angle of the longitudinal blanking is also 30 °. For this purpose, the slats 10 have a length 23 of 45 mm and a distance 28 of 35.5 mm on. The smallest width of the lamella 10 in this example is 1 mm, the largest Width 18.5 mm. The overall height 25 of the embodiment is 46 mm Overall width 24 320 mm. The widths 21 are 40 mm. The lower width 22 of the central diaphragm body 27 has 80 mm.

Durch die erfindungsgemäßen Ausführungsvarianten können verschiedene Ausblendwinkel γ, bevorzugt aber Winkel γ, zwischen 25° und 60°, in besonders bevorzugter Weise zwischen 30° und 45°, bei gleichzeitig gegenüber dem Stand der Technik deutlich reduzierter Bauhöhe der Beleuchtungsvorrichtung, erreicht werden. Bevorzugte Ausführungsvarianten sehen hierbei 4 bis 6 Reflektoren vor. Durch die gezeigten Spiegelrasteroptiken, Lamellen oder Prismen kann bei linearen Lichtquellen 1 zusätzlich eine Längsausblendung auf beliebige Winkelbereiche, bevorzugt zwischen 25° und 60°, besonders bevorzugt zwischen 30° und 45° sichergestellt werden. Darüber hinaus reduziert sich, die auf die gesamte Weite der Beleuchtungsvorrichtung bezogene mittlere Leuchtdichte mit zunehmender Leuchtenbreite.Different blanking angles can be achieved by the design variants according to the invention γ, but preferably angle γ, between 25 ° and 60 °, in a particularly preferred manner between 30 ° and 45 °, with a significantly reduced overall height compared to the prior art the lighting device. See preferred versions 4 to 6 reflectors in front. Through the mirror grid optics shown, slats or prisms with linear light sources 1 can also have a longitudinal blanking any angular ranges, preferably between 25 ° and 60 °, particularly preferably between 30 ° and 45 ° can be ensured. It also reduces that to the entire width the mean luminance related to the lighting device with increasing Lights width.

Claims (13)

Beleuchtungsvorrichtung mit mindestens einer linearen und im Wesentlichen vollständig innerhalb einer Lichtleiteinrichtung (3) angeordneten Lichtquelle (1) und mindestens zwei an Lichtaustrittsöffnungen (16) der Lichtleiteinrichtung (3) angeordneten Reflektoren (2) zur winkelmäßigen Begrenzung der Lichtabstrahlung, wobei von der zwischen der Lichtquelle (1) und jeweils mindestens einem Reflektor (3) angeordneten Lichtleiteinrichtung (3) jeweils ein Teil des von der Lichtquelle (1) abgestrahlten Lichts zum jeweiligen Reflektor führbar ist, dadurch gekennzeichnet, dass zumindest auf einer Seite der Lichtquelle (1) zumindest zwei von dieser unterschiedlich weit entfernte Reflektoren (2) vorgesehen sind und die Reflektoren (2) in der Weise angeordnet sind, dass ihre Hauptstrahlrichtung im Wesentlichen senkrecht zur Längserstreckung der linearen Lichtquelle (1) ausgerichtet ist.Lighting device with at least one linear light source (1) arranged essentially completely within a light guide device (3) and at least two reflectors (2) arranged at light exit openings (16) of the light guide device (3) for angular limitation of the light radiation, of which between the light source (1) and in each case at least one reflector (3) arranged light guide device (3) a part of the light emitted by the light source (1) can be guided to the respective reflector, characterized in that at least on one side of the light source (1) at least two of these reflectors (2) are provided at different distances and the reflectors (2) are arranged in such a way that their main beam direction is aligned essentially perpendicular to the longitudinal extent of the linear light source (1). Beleuchtungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zumindest eine Lichtleiteinrichtung (3) wenigstens einen Kanal mit, vorzugsweise hochglänzenden, lichtreflektierenden Oberflächen aufweist.Lighting device according to claim 1, characterized in that at least one light-guiding device (3) has at least one channel with, preferably high-gloss, light-reflecting surfaces. Beleuchtungsvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass zwei oder mehrere Kanäle vorgesehen sind, die im Wesentlichen parallel zueinander verlaufen.Lighting device according to claim 2, characterized in that two or more channels are provided which run substantially parallel to each other. Beleuchtungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Querschnittsfläche (15) der Lichtleiteinrichtung (3) sich mit zunehmender Entfernung von der Lichtquelle (1), vorzugsweise immer auf der von der Lichtquelle (1) abgewandten Seite eines Reflektors (2), verjüngt.Lighting device according to claim 1 or 2, characterized in that the cross-sectional area (15) of the light guide device (3) increases with increasing distance from the light source (1), preferably always on the side of a reflector (2) facing away from the light source (1), rejuvenated. Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass eine Lichtaustrittsquerschnittsfläche (13) der Lichtleiteinrichtung (3) am Reflektor (2) kleiner als die hierzu parallele Projektion der Querschnittsfläche der Lichtquelle (1) ist.Lighting device according to one of claims 1 to 4, characterized in that a light exit cross-sectional area (13) of the light-guiding device (3) on the reflector (2) is smaller than the parallel projection of the cross-sectional area of the light source (1). Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Reflektoren (2) einen kreisbogenförmig gekrümmten Abschnitt (14) und einen parabelförmig gekrümmten Abschnitt (15) aufweisen. Lighting device according to one of Claims 1 to 5, characterized in that the reflectors (2) have a section (14) curved in the shape of a circular arc and a section (15) curved in a parabolic shape. Beleuchtungsvorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Mittelpunkt des kreisförmig gekrümmten Abschnitts (14) und/oder der Parabelbrennpunkt des parabelförmig gekrümmten Abschnitts (15) auf einer unteren Kante (19) einer Lichtaustrittsquerschnittsfläche 13 liegt (liegen).Lighting device according to claim 6, characterized in that the center of the circularly curved section (14) and / or the parabolic focal point of the parabolically curved section (15) lies (lie) on a lower edge (19) of a light exit cross-sectional area 13. Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Reflektoren (2) jeweils an einer Lichtaustrittsöffnung (16) der Lichtleiteinrichtung (3) auf deren von der Lichtquelle (1) abgewandten Seite angeordnet sind.Lighting device according to one of claims 1 to 7, characterized in that the reflectors (2) are each arranged at a light exit opening (16) of the light guide device (3) on its side facing away from the light source (1). Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass im Bereich der Reflektoren (2) und/oder innerhalb der Lichtleiteinrichtung (3) Lamellen (10), vorzugsweise mindestens eine Spiegelrasteroptik (9), oder Prismen (11) angeordnet sind.Lighting device according to one of claims 1 to 8, characterized in that in the region of the reflectors (2) and / or within the light-guiding device (3), slats (10), preferably at least one mirror grid optics (9), or prisms (11) are arranged. Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Reflektoren (2) und/oder die Wandungen (4) der Lichtleiteinrichtung (3) und/oder - falls vorhanden - die Lamellen (10) oder Spiegelrasteroptiken (9) Oberflächen mit einem Lichtreflexionsgrad größer 90% oder größer 95% oder größer 98% aufweisen.Lighting device according to one of claims 1 to 9, characterized in that the reflectors (2) and / or the walls (4) of the light guide device (3) and / or - if present - the lamellae (10) or mirror grid optics (9) with surfaces have a light reflectance greater than 90% or greater than 95% or greater than 98%. Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Lichtquelle (1) eine Leuchtstoffröhre oder eine Halogenlampe oder eine Anordnung von linear angeordneten Punktlichtquellen ist.Lighting device according to one of claims 1 to 10, characterized in that the light source (1) is a fluorescent tube or a halogen lamp or an arrangement of linearly arranged point light sources. Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Reflektoren (2) und/oder die Lichtleiteinrichtung (3) symmetrisch bezüglich einer durch die Lichtquelle (1) verlaufenden Achse bzw. Ebene angeordnet sind.Lighting device according to one of claims 1 to 11, characterized in that the reflectors (2) and / or the light guide device (3) are arranged symmetrically with respect to an axis or plane running through the light source (1). Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass sie vier oder sechs Reflektoren (2), vorzugsweise in symmetrischer Anordnung bezüglich der Lichtquelle (1), aufweist.Lighting device according to one of claims 1 to 11, characterized in that it has four or six reflectors (2), preferably in a symmetrical arrangement with respect to the light source (1).
EP04008208A 2003-04-07 2004-04-05 Lighting device Expired - Lifetime EP1467139B1 (en)

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WO2010051226A1 (en) 2008-10-31 2010-05-06 Code 3, Inc. Light fixture with inner and outer trough reflectors
GB2478667A (en) * 2008-10-31 2011-09-14 Code 3 Inc Light fixture with inner and outer trough reflectors
GB2478667B (en) * 2008-10-31 2013-06-05 Code 3 Inc Light fixture with inner and outer trough reflectors
US9052083B2 (en) 2008-10-31 2015-06-09 Code 3, Inc. Light fixture with inner and outer trough reflectors

Also Published As

Publication number Publication date
AT500432A1 (en) 2005-12-15
ATE467796T1 (en) 2010-05-15
DE502004011146D1 (en) 2010-06-24
EP1467139A3 (en) 2007-07-04
EP1467139B1 (en) 2010-05-12
AT500432B8 (en) 2007-02-15
AT500432B1 (en) 2006-03-15

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