EP0930459B1 - Reflector for a light source, in particular for space illumination - Google Patents

Reflector for a light source, in particular for space illumination Download PDF

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Publication number
EP0930459B1
EP0930459B1 EP98122979A EP98122979A EP0930459B1 EP 0930459 B1 EP0930459 B1 EP 0930459B1 EP 98122979 A EP98122979 A EP 98122979A EP 98122979 A EP98122979 A EP 98122979A EP 0930459 B1 EP0930459 B1 EP 0930459B1
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EP
European Patent Office
Prior art keywords
reflector
layer
reflector according
base layer
reflection
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Expired - Lifetime
Application number
EP98122979A
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German (de)
French (fr)
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EP0930459A2 (en
EP0930459A3 (en
Inventor
Elmar Fröis
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Zumtobel Staff GmbH
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Zumtobel Staff GmbH
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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
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/06—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the lampholder
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings

Definitions

  • a reflector that comes from a light source, especially one from a Lamp of a luminaire, at least partially outgoing light rays into a certain one To reflect the beam direction. This will create those generated by the light source Light energy and light output largely exploited.
  • a light source especially one from a Lamp of a luminaire
  • Light energy and light output largely exploited.
  • For lights that the The purpose of lighting a room delimited by walls is the direction of lighting directed into the room with direct lighting. However, there are also lights are set up for indirect or indirect and direct lighting.
  • On Reflector for fully or predominantly indirect lighting is arranged that the main direction of illumination to the wall or ceiling bounding the room is directed.
  • Known reflectors, both direct and indirect Lighting are used, for example, perforated so that only part of the light Light source is reflected and another part of the light is reflected in the area of the reflector Perforation openings.
  • reflectors for lights for room lighting consist of one the electrical equipment containing base part on which a reflector and a light source are held, the reflector protruding freely from the base part.
  • Luminaire construction is not a so-called luminaire housing surrounding the reflector intended.
  • a reflector be made from a self - supporting base layer made of white and opaque or crystal clear and translucent plastic to form the reflection of the light rays with a Reflective layer is coated.
  • the coating can e.g. from evaporated Aluminum.
  • the reflector coating When applying the reflector coating, it can happen that small areas of the Reflective surface should not be coated. This can be caused by impurities such as. Dust particles have a full coating on the reflective surface prevent by their presence and / or tend to flake off, causing small Holes appear in the reflective layer. If the base layer is crystal clear, the light can radiate through the holes, the holes - on the outer surface of the Reflector viewed - from the remaining dark-appearing outer surface of the reflector stand out as clearly recognizable points of light.
  • the reflector In order to reduce this disruptive effect of the light points, is from the EP 0 336 244 a luminaire is known, the reflector by a self-supporting Base layer is formed, the one on the inside facing the light source Has a reflective layer made of partially reflective and partially transparent material, the base layer also consisting of a partially transparent material. There here the reflector when viewed from the outside due to a relatively high Luminance appears as a luminous body, is the difference in luminance diminished to existing light points.
  • the present invention has for its object to provide an alternative solution Specify formation of a reflector with the properties described above.
  • Base layer partially transparent additional layer will be the same achieved technical lighting properties as in that known from EP 0 336 244 Reflector.
  • the additional layer can be applied to the base layer done in a simple manner, so that reflectors can be installed at a high cost Quality can be maintained.
  • the additional layer can be on the outside the base layer and / or the inside under the reflective layer become.
  • the light is both on the inside of the reflector facing the light source and also on the outside of the Reflector is emitted.
  • the reflector according to the invention is therefore suitable for both direct lighting as well as indirect lighting of the existing room, where due to the partially transparent or partially transparent reflection layer and the Partially transparent additional layer, especially in the case of a reflector with an upright running wall, a special light effect is achieved in that at a External view of the reflector when the lamp is on as a luminous body appears, that is, especially due to the partial transparency of the additional layer Intrinsic luminance surprisingly comes into its own much more than at crystal clear design.
  • This light effect is particularly advantageous with a reflector, which extends in a sleeve or dome shape around a vertical central axis.
  • the disturbing Effect of the light points is also in the embodiment according to the invention according to claim 1 reduced or negligible because the reflector when viewing appears on the outside as a luminous body due to the relatively high inherent luminance and therefore the luminance difference to existing light points is significantly reduced is.
  • the subclaims contain features that improve lighting of the room, the construction of the reflector or an associated luminaire improve and an easy to use and inexpensive to manufacture construction enable.
  • the lamp generally designated 1 consists of a base part 2 with a Fastener 3 at one end and one from its other end protruding reflector 4 in the form of a hollow dome, the cavity 5 with the associated cavity opening 6 faces away from the base part 2.
  • the base part 2 can have a tapered, preferably cylindrical support pin 7 with a flange 8 widening at the end have, on which the reflector 4 rests and is preferably releasably attached, in particular by means of a locking device 9 to be described.
  • the hollow dome-shaped reflector body 4a has one in its central ridge area preferably round opening 11 through which a light source, here in the form of a Electric lamp 12 extends into the cavity 5, which in a socket 13 in Carrying pin 7 sits.
  • a light source here in the form of a Electric lamp 12
  • the reflector body 4a consists of several layers.
  • One the hollow dome-shaped Base layer 4b forming reflector body 4b is made of transparent plastic, and it extends from the edge 11a of the ridge opening 11 in a dome shape to the edge 6a Cavity opening 6.
  • the edge 6a can with an angular edge expansion a flange 6b and a sleeve-shaped adjoining it
  • the peripheral wall portion 6c can be stabilized.
  • the thickness d of the base layer 4b can be approximately 1 mm to about 3 mm, in particular about 2 mm. This thickness d can be in the whole Area of the reflector body 4a be approximately the same, the reflector body 4a or Base layer 4b is of self-supporting strength, i.e. the reflector body 4a stands up self-supporting from base part 2 and does not require any support from side housing parts, as is usual with other lights.
  • the reflector body 4a has on its inside 14 a reflection surface 15, which is in the circumferential direction over the entire inner circumference and along the central axis 16 of the Luminaire 1 from the edge 6a of the cavity opening 6 to the edge 11a of the ridge opening 11 can extend.
  • the reflection surface 15 is a due to the bare surface Reflective layer 17 formed, which is arranged on the inner surface 14a of the base layer 14b is.
  • the reflection layer 17 is partially reflective and partially transparent or partially translucent. It can be a thin metal coating, especially made of Aluminum, trade. In the present embodiment, the reflection layer 17 is one evaporated aluminum layer.
  • the reflective layer 17 is so thin that it is partially transparent. Part of the light is consequently reflected and turned on in the lighting mode Part of the light shines through the reflective layer.
  • the reflection surface 15 also has known facets 18 that block the light of the Scatter lamp 12 in the reflection in a small angular range and thereby one cause homogeneous, even light distribution.
  • the facets 18 are through Faceted surfaces formed by the curvature of a theoretical inner surface deviate and include obtuse angles between them that are slightly smaller than 180 °.
  • the facets 18 are as Negative surfaces on the inner surface 14a forming during the injection molding process Molded part of the mold so that the facets 18 during injection molding of the Reflector body 4a are molded simultaneously.
  • the base layer 4b of the reflector body 4a is the one shown in FIG. 2 and made of the reflector known from EP 0 336 244 is partially transparent and thus translucent, which is indicated by a uniform Coloring or clouding the base layer 4b, here the plastic is reached and leaves thus a subdued and diffuse passage of the light rays.
  • the color of the Color to be mixed can be different. Light shades are special advantageous, e.g. a range of hues between white and yellow or between white and orange. Basically, all colors are suitable.
  • the partial light transmission of the reflection layer 17 and the base layer 4b is so great that the structure of the facets 18, here their boundary lines 18a when switched off Lamp 12 and / or with lamp 12 switched on (in the lighting mode) and with normal Room light or in the dark room are visible from the outside, e.g. as shadow edges, what in Fig. 1 is shown with dashed lines.
  • the latching device 9 has one or more on the one connecting part Locking lugs 23, which are elastically bendable transversely to the central axis 16 and thus are biased into a latching position in which they are due to their own elasticity Reach behind shoulder 24 on the other connecting part.
  • the locking lugs 23 are each configured by a locking arm 25 formed, which extends in the longitudinal direction of the central axis 16, in a Binding catch 26 and an undercut formed therein engages behind.
  • the locking lugs 23 are preferably in the edge region of the
  • the apex opening 11 is arranged in one piece from the reflector body 4a or from one associated washer 27 as a one-piece injection molded part, for. B. made of plastic can stand out.
  • the annular disc 27 can surround the ridge opening 11 Position with the reflector body 4a by screws, rivets or the like. Fasteners are connected.
  • For a detachable Locking devices can be accessed using a pin or screwdriver Openings on the base part 2 may be prescribed (not shown), through which the Locking lugs 23 can be bent into their release positions with an associated tool are and thereby the locking can be released.
  • the equipment required for the electrical operation of the lamp 1 including a ballast when the lamp is formed by a fluorescent lamp itself in the cylindrical base part 2, which is preferably made of light metal and has better heat dissipation of coolant fins on its outer surface. Electrical connections for electrical lines, not shown, can be in the range of Fastening element 3 may be arranged.

Abstract

A reflector (4) for a light source, especially for room lumination, consists of a self-supporting base layer with a reflection layer located on the inside facing towards the light source made from partly reflecting and partly transparent material. The base layer consists also of partly transparent material. On its outside (19) and/or inside (14) below the reflection layer it has an additional partly transparent layer. The base layer is preferably made of plastics and is colored. It and/or the additional layer has/have a bright color in the spectrum white to yellow or white to orange. The reflection layer consists of metal, especially aluminum.

Description

Es ist der Zweck eines Reflektors, die von einer Lichtquelle, insbesondere die von einer Lampe einer Leuchte, ausgehenden Lichtstrahlen wenigstens teilweise in eine bestimmte Strahlrichtung zu reflektieren. Hierdurch werden die von der Lichtquelle erzeugte Lichtenergie und Leuchtleistung weitgehend ausgenutzt. Bei Leuchten, die der Beleuchtung eines durch Wände begrenzten Raumes dienen, ist die Beleuchtungsrichtung bei direkter Beleuchtung in den Raum hinein gerichtet. Es gibt jedoch auch Leuchten die für eine indirekte oder für eine indirekte und direkte Beleuchtung eingerichtet sind. Ein Reflektor für eine vollständig oder überwiegend indirekte Beleuchtung ist so angeordnet, daß die Hauptbeleuchtungsrichtung zur den Raum begrenzenden Wand oder Decke gerichtet ist. Bekannte Reflektoren, die sowohl der direkten als auch der indirekten Beleuchtung dienen, sind beispielsweise perforiert, so daß nur ein Teil des Lichtes der Lichtquelle reflektiert wird und ein anderer Teil des Lichtes den Reflektor im Bereich der Perforationsöffnungen durchquert.It is the purpose of a reflector that comes from a light source, especially one from a Lamp of a luminaire, at least partially outgoing light rays into a certain one To reflect the beam direction. This will create those generated by the light source Light energy and light output largely exploited. For lights that the The purpose of lighting a room delimited by walls is the direction of lighting directed into the room with direct lighting. However, there are also lights are set up for indirect or indirect and direct lighting. On Reflector for fully or predominantly indirect lighting is arranged that the main direction of illumination to the wall or ceiling bounding the room is directed. Known reflectors, both direct and indirect Lighting are used, for example, perforated so that only part of the light Light source is reflected and another part of the light is reflected in the area of the reflector Perforation openings.

Es ist außerdem bei Beleuchtungseinrichtungen für Räume bekannt, die Reflexionsfläche eines Reflektors mit Facetten zu versehen, die dazu dienen, das Licht der Lampe bei der Reflexion in einem kleinen Winkelbereich zu streuen und dadurch eine homogenere gleichmäßigere Lichtverteilung zu erzielen. Andererseits wird das direkt reflektierte Bild der Leuchte durch die Facetten durch viele einzelne, kleine Bilder aufgelöst. Dieses Erscheinungsbild wird von dem Betrachter als angenehmer erfunden, da die subjektive Blendung reduziert wird. Dies gilt insbesondere für Leuchten zur direkten Beleuchtung des Raumes.It is also known in lighting devices for rooms, the reflection surface of a reflector with facets that serve to light the lamp from the Scatter reflection in a small angular range and thereby a more homogeneous to achieve more even light distribution. On the other hand, the directly reflected image the light through the facets resolved by many individual, small pictures. This Appearance is invented by the viewer as more pleasant, since the subjective Glare is reduced. This applies in particular to luminaires for direct lighting of the Space.

Desweiteren sind Reflektoren für Leuchten zur Raumbeleuchtung bekannt, die aus einem die elektrischen Betriebsmittel enthaltenden Basisteil bestehen, an dem ein Reflektor und eine Lichtquelle gehalten sind, wobei der Reflektor vom Basisteil frei absteht. Bei dieser Leuchten-Bauweise ist ein den Reflektor umgebendes sogenanntes Leuchtengehäuse nicht vorgesehen.Furthermore, reflectors for lights for room lighting are known, which consist of one the electrical equipment containing base part on which a reflector and a light source are held, the reflector protruding freely from the base part. At this Luminaire construction is not a so-called luminaire housing surrounding the reflector intended.

Es ist bei Leuchten auch bereits vorgeschlagen worden, einen Reflektor aus einer selbsttragenden Basisschicht aus weißem und lichtundurchlässigem oder glasklarem und lichtdurchlässigem Kunststoff zu bilden, die zur Reflexion der Lichtstrahlen mit einer Reflexionsschicht beschichtet ist. Die Beschichtung kann z.B. aus aufgedampften Aluminium bestehen. It has also been proposed in the case of luminaires that a reflector be made from a self - supporting base layer made of white and opaque or crystal clear and translucent plastic to form the reflection of the light rays with a Reflective layer is coated. The coating can e.g. from evaporated Aluminum.

Beim Aufbringen der Reflektorbeschichtung kann es vorkommen, daß kleine Stellen der Reflexionsfläche nicht beschichtet werden. Dies kann seine Ursache in Verunreinigungen wie z.B. Staubpartikel haben, die eine vollständige Beschichtung der Reflexionsfläche durch ihr Vorhandensein verhindern und/oder zum Abplatzen neigen, wodurch kleine Löcher in der Reflexionsschicht entstehen. Ist die Basisschicht glasklar, so kann das Licht durch die Löcher hindurchstrahlen, wobei sich die Löcher - auf der Außenfläche des Reflektors betrachtet - von der übrigen dunkel erscheinenden Außenfläche des Reflektors als deutlich erkennbare Lichtpunkte abheben. Dabei ist zu berücksichtigen, daß sich zusätzliche Lichtpunkte an der Innenseite eines den Reflektor in einem Abstand umgebenden Gehäuses oder - bei einem gehäuselosen Reflektor - an der dem Reflektor gegenüberliegenden Wand- oder Deckenfläche abbilden, die durch die durch die kleinen Öffnungen in der Reflexionsschicht hindurchtretenden Lichtstrahlen erzeugt werden.When applying the reflector coating, it can happen that small areas of the Reflective surface should not be coated. This can be caused by impurities such as. Dust particles have a full coating on the reflective surface prevent by their presence and / or tend to flake off, causing small Holes appear in the reflective layer. If the base layer is crystal clear, the light can radiate through the holes, the holes - on the outer surface of the Reflector viewed - from the remaining dark-appearing outer surface of the reflector stand out as clearly recognizable points of light. It should be borne in mind that additional light spots on the inside of the reflector at a distance surrounding housing or - in the case of a housing-free reflector - on the reflector depict opposite wall or ceiling surface by the through the small Openings in the reflection layer are transmitted through light rays.

Um diese störende Wirkung der Lichtpunkte zu vermindern, ist aus der EP 0 336 244 eine Leuchte bekannt, deren Reflektor durch eine selbsttragende Basisschicht gebildet wird, die an ihrer der Lichtquelle zugewandten Innenseite eine Reflexionsschicht aus teilreflektierendem und teiltransparentem Material aufweist, wobei die Basisschicht ebenfalls aus einem teiltransparenten Material besteht. Da hier der Reflektor bei der Sicht von außen infolge einer relativ hohen Eigenleuchtdichte als leuchtender Körper erscheint, ist der Leuchtdichteunterschied zu vorhandenen Lichtpunkten vermindert.In order to reduce this disruptive effect of the light points, is from the EP 0 336 244 a luminaire is known, the reflector by a self-supporting Base layer is formed, the one on the inside facing the light source Has a reflective layer made of partially reflective and partially transparent material, the base layer also consisting of a partially transparent material. There here the reflector when viewed from the outside due to a relatively high Luminance appears as a luminous body, is the difference in luminance diminished to existing light points.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine alternative Lösung zur Bildung eines Reflektors mit den oben beschriebenen Eigenschaften anzugeben.The present invention has for its object to provide an alternative solution Specify formation of a reflector with the properties described above.

Die Aufgabe wird durch einen Reflektor mit den Merkmalen des Anspruchs 1 gelöst.The object is achieved by a reflector with the features of claim 1.

Durch die Verwendung einer auf die aus transparentem Material bestehenden Basisschicht teiltransparenten zusätzlichen Schicht werden die gleichen lichttechnischen Eigenschaften erreicht wie bei dem aus der EP 0 336 244 bekannten Reflektor. Das Aufbringen der Zusatzschicht auf die Basisschicht kann dabei auf einfache Weise erfolgen, so daß mit geringem Aufwand Reflektoren in einer hohen Qualität erhalten werden können. Die Zusatzschicht kann dabei auf die Außenseite der Basisschicht und/oder die Innenseite unter der Reflexionsschicht aufgebracht werden.By using one made of transparent material Base layer partially transparent additional layer will be the same achieved technical lighting properties as in that known from EP 0 336 244 Reflector. The additional layer can be applied to the base layer done in a simple manner, so that reflectors can be installed at a high cost Quality can be maintained. The additional layer can be on the outside the base layer and / or the inside under the reflective layer become.

Bei der erfindungsgemäßen Lösung ist wiederum der Vorteil vorhanden, das Licht sowohl an der der Lichtquelle zugewandten Innenseite des Reflektors als auch an der Außenseite des Reflektors abgestrahlt wird. Der erfindungsgemäße Reflektor eignet sich somit sowohl für eine direkte Beleuchtung als auch für eine indirekte Beleuchtung des vorhandenen Raumes, wobei aufgrund der teiltransparenten bzw. teillichtdurchlässigen Reflexionsschicht und der teiltransparenten zusatzschicht, insbesondere bei einem Reflektor mit einer aufrecht verlaufenden Wandung, ein besonderer Lichteffekt dadurch erzielt wird, daß bei einer Sicht von außen der Reflektor im Leuchtbetrieb der Lampe als leuchtender Körper erscheint, das heißt, besonders infolge der Teiltransparenz der Zusatzschicht die Eigenleuchtdichte in überraschender Weise wesentlich stärker zur Geltung kommt als bei glasklarer Ausführung. Dieser Lichteffekt ist besonders vorteilhaft bei einem Reflektor, der sich hülsen- oder kuppelförmig um eine vertikale Mittelachse erstreckt. Die störende Wirkung der Lichtpunkte ist auch bei der erfindungsgemäßen Ausgestaltung nach Anspruch 1 vermindert oder vernachlässigbar gering, weil der Reflektor bei der Sicht von außen infolge der relativ hohen Eigenleuchtdichte als leuchtender Körper erscheint und deshalb der Leuchtdichteunterschied zu vorhandenen Lichtpunkten wesentlich vermindert ist. In the solution according to the invention there is again the advantage that the light is both on the inside of the reflector facing the light source and also on the outside of the Reflector is emitted. The reflector according to the invention is therefore suitable for both direct lighting as well as indirect lighting of the existing room, where due to the partially transparent or partially transparent reflection layer and the Partially transparent additional layer, especially in the case of a reflector with an upright running wall, a special light effect is achieved in that at a External view of the reflector when the lamp is on as a luminous body appears, that is, especially due to the partial transparency of the additional layer Intrinsic luminance surprisingly comes into its own much more than at crystal clear design. This light effect is particularly advantageous with a reflector, which extends in a sleeve or dome shape around a vertical central axis. The disturbing Effect of the light points is also in the embodiment according to the invention according to claim 1 reduced or negligible because the reflector when viewing appears on the outside as a luminous body due to the relatively high inherent luminance and therefore the luminance difference to existing light points is significantly reduced is.

In den Unteransprüchen sind Merkmale enthalten, die zur Verbesserung der Beleuchtung des Raumes beitragen, die Bauweise des Reflektors bzw. eine zugehörige Leuchte verbessern und eine handhabungsfreundliche sowie kostengünstig herstellbare Bauweise ermöglichen.The subclaims contain features that improve lighting of the room, the construction of the reflector or an associated luminaire improve and an easy to use and inexpensive to manufacture construction enable.

Nachfolgend werden die Erfindung und weitere durch sie erzielbare Vorteile anhand von bevorzugten Ausführungsbeispielen und vereinfachten Zeichnungen näher erläutert. Es zeigen

Fig. 1
eine Leuchte mit einem erfindungsgemäßen Reflektor in der perspektivischen Vorderansicht von unten;
Fig. 2
den Teilschnitt II-II in Fig. 1 entsprechend einer bekannten Ausgestaltung des Reflektors;
Fig. 3
einen der Fig. 2 entsprechenden Schnitt durch einen erfindungsgemäßen Reflektor;
Fig. 4
einen der Fig. 2 entsprechenden Schnitt durch einen erfindungsgemäßen Reflektor in abgewandelter Ausgestaltung;
Fig. 5
eine Einzelheit des Reflektors;
Fig. 6
Verbindungselemente des Reflektors im axialen Schnitt.
The invention and further advantages which can be achieved by means of preferred exemplary embodiments and simplified drawings are explained in more detail below. Show it
Fig. 1
a lamp with a reflector according to the invention in a perspective front view from below;
Fig. 2
the partial section II-II in Figure 1 according to a known configuration of the reflector.
Fig. 3
a section corresponding to Figure 2 through a reflector according to the invention.
Fig. 4
a section corresponding to Figure 2 through a reflector according to the invention in a modified embodiment.
Fig. 5
a detail of the reflector;
Fig. 6
Connection elements of the reflector in axial section.

Die allgemein mit 1 bezeichnete Leuchte besteht aus einem Basisteil 2 mit einem Befestigungselement 3 an seinem einen Ende und einem von seinem anderen Ende abstehenden Reflektor 4 in Form einer Hohlkuppel, deren Hohlraum 5 mit der zugehörigen Hohlraumöffnung 6 dem Basisteil 2 abgewandt ist. Im dem Reflektor 4 zugewandten Endbereich des Basisteils 2 kann das Basisteil 2 einen verjüngten, vorzugsweise zylindrischen Tragzapfen 7 mit einem sich endseitig erweiternden Flansch 8 aufweisen, an dem der Reflektor 4 anliegt und vorzugsweise lösbar befestigt ist, insbesondere mittels einer noch zu beschreibenden Verrastungsvorrichtung 9.The lamp generally designated 1 consists of a base part 2 with a Fastener 3 at one end and one from its other end protruding reflector 4 in the form of a hollow dome, the cavity 5 with the associated cavity opening 6 faces away from the base part 2. In the reflector 4 facing end region of the base part 2, the base part 2 can have a tapered, preferably cylindrical support pin 7 with a flange 8 widening at the end have, on which the reflector 4 rests and is preferably releasably attached, in particular by means of a locking device 9 to be described.

Der hohlkuppelförmige Reflektorkörper 4a weist in seinem zentralen Firstbereich eine vorzugsweise runde Öffnung 11 auf, durch die sich eine Lichtquelle, hier in Form einer elektrischen Lampe 12, in den Hohlraum 5 hinein erstreckt, die in einer Fassung 13 im Tragzapfen 7 sitzt.The hollow dome-shaped reflector body 4a has one in its central ridge area preferably round opening 11 through which a light source, here in the form of a Electric lamp 12 extends into the cavity 5, which in a socket 13 in Carrying pin 7 sits.

Der Reflektorkörper 4a besteht aus mehreren Schichten. Eine den hohlkuppelförmigen Reflektorkörper 4a bildende Basisschicht 4 b besteht aus transparentem Kunststoff, und sie erstreckt sich vom Rand 11a der Firstöffnung 11 hohlkuppelförmig bis zum Rand 6a der Hohlraumöffnung 6. Der Rand 6a kann durch eine winkelförmige Randerweiterung mit einem Flansch 6b und einem sich an diesen anschließenden hülsenförmigen Umfangswandabschnitt 6c stabilisiert sein. Die Dicke d der Basisschicht 4b kann etwa 1 mm bis etwa 3 mm, insbesondere etwa 2 mm, betragen. Diese Dicke d kann im gesamten Bereich des Reflektorkörpers 4a etwa gleich sein, wobei der Reflektorkörper 4a bzw. die Basisschicht 4b von selbsttragender Festigkeit ist, d.h. der Reflektorkörper 4a steht sich selbst tragend vom Basisteil 2 ab und bedarf keiner Stützung durch seitliche Gehäuseteile, wie es bei anderen Leuchten üblich ist.The reflector body 4a consists of several layers. One the hollow dome-shaped Base layer 4b forming reflector body 4b is made of transparent plastic, and it extends from the edge 11a of the ridge opening 11 in a dome shape to the edge 6a Cavity opening 6. The edge 6a can with an angular edge expansion a flange 6b and a sleeve-shaped adjoining it The peripheral wall portion 6c can be stabilized. The thickness d of the base layer 4b can be approximately 1 mm to about 3 mm, in particular about 2 mm. This thickness d can be in the whole Area of the reflector body 4a be approximately the same, the reflector body 4a or Base layer 4b is of self-supporting strength, i.e. the reflector body 4a stands up self-supporting from base part 2 and does not require any support from side housing parts, as is usual with other lights.

Der Reflektorkörper 4a weist an seiner Innenseite 14 eine Reflexionsfläche 15 auf, die sich in Umfangsrichtung über den gesamten Innenumfang und längs der Mittelachse 16 der Leuchte 1 vom Rand 6a der Hohlraumöffnung 6 bis zum Rand 11a der Firstöffnung 11 erstrecken kann. Die Reflexionsfläche 15 ist durch die blanke Oberfläche einer Reflexionsschicht 17 gebildet, die auf der Innenfläche 14a der Basisschicht 14b angeordnet ist. Die Reflexionsschicht 17 ist teilreflektierend und teiltransparent bzw. teillichtdurchlässig. Es kann sich um eine dünne Metallbeschichtung, insbesondere aus Aluminium, handeln. Bei der vorliegenden Ausgestaltung ist die Reflexionsschicht 17 eine aufgedampfte Aluminiumschicht. Die Reflexionsschicht 17 ist so dünn, daß sie teiltransparent ist. Im Leuchtbetrieb wird folglich ein Teil des Lichts reflektiert und ein Teil des Lichts scheint durch die Reflexionsschicht.The reflector body 4a has on its inside 14 a reflection surface 15, which is in the circumferential direction over the entire inner circumference and along the central axis 16 of the Luminaire 1 from the edge 6a of the cavity opening 6 to the edge 11a of the ridge opening 11 can extend. The reflection surface 15 is a due to the bare surface Reflective layer 17 formed, which is arranged on the inner surface 14a of the base layer 14b is. The reflection layer 17 is partially reflective and partially transparent or partially translucent. It can be a thin metal coating, especially made of Aluminum, trade. In the present embodiment, the reflection layer 17 is one evaporated aluminum layer. The reflective layer 17 is so thin that it is partially transparent. Part of the light is consequently reflected and turned on in the lighting mode Part of the light shines through the reflective layer.

Die Reflexionsfläche 15 weist außerdem ansich bekannte Facetten 18 auf, die das Licht der Lampe 12 bei der Reflexion in einem kleinen Winkelbereich streuen und dadurch eine homogene, gleichmäßige Lichtverteilung bewirken. Die Facetten 18 sind durch Facettenflächen gebildet, die von der Krümmung einer theoretischen Innenfläche abweichen und stumpfe Winkel zwischen sich einschließen, die etwas kleiner sind als 180°. Bei der vorliegenden Ausgestaltung, bei der der Reflektorkörper 4a aus Kunststoff besteht und ein Kunststoff-Spritzgießteil ist, das im Formraum eines nicht dargestellten zweiteiligen Formwerkzeugs durch Spritzgießen hergestellt ist, sind die Facetten 18 als Negativflächen am die Innenfläche 14a beim Spritzgießvorgang bildenden Formwerkzeugteil angeformt, so daß die Facetten 18 beim Spritzgießen des Reflektorkörpers 4a gleichzeitig angeformt werden. The reflection surface 15 also has known facets 18 that block the light of the Scatter lamp 12 in the reflection in a small angular range and thereby one cause homogeneous, even light distribution. The facets 18 are through Faceted surfaces formed by the curvature of a theoretical inner surface deviate and include obtuse angles between them that are slightly smaller than 180 °. In the present embodiment, in which the reflector body 4a is made of plastic exists and is a plastic injection molded part in the mold space of a not shown two-part mold is produced by injection molding, the facets 18 are as Negative surfaces on the inner surface 14a forming during the injection molding process Molded part of the mold so that the facets 18 during injection molding of the Reflector body 4a are molded simultaneously.

Die Basisschicht 4b des Reflektorkörpers 4a ist bei dem in Fig. 2 dargestellten und aus der EP 0 336 244 bekannten Reflektor teiltransparent und somit durchscheinend, was durch ein gleichmäßiges Einfärben oder Eintrüben der Basisschicht 4b, hier des Kunststoffs erreicht wird und läßt somit einen gedämpften und diffusen Durchgang der Lichtstrahlen zu. Der Farbton der einzumischenden Farbe kann unterschiedlich sein. Helle Farbtöne sind besonders vorteilhaft, z.B. ein Farbtonbereich zwischen weiß und gelb oder zwischen weiß und orange. Grundsätzlich eignen sich alle Farben.The base layer 4b of the reflector body 4a is the one shown in FIG. 2 and made of the reflector known from EP 0 336 244 is partially transparent and thus translucent, which is indicated by a uniform Coloring or clouding the base layer 4b, here the plastic is reached and leaves thus a subdued and diffuse passage of the light rays. The color of the Color to be mixed can be different. Light shades are special advantageous, e.g. a range of hues between white and yellow or between white and orange. Basically, all colors are suitable.

Im Leuchtbetrieb der Leuchte 1 wird ein Hauptanteil der auf die Reflexionsfläche 15 auftreffenden Lichtstrahlen reflektiert, wobei dieser Hauptanteil in die als resultierende dargestellte Hauptabstrahlungsrichtung HR aus dem Hohlraum 5 längs der Mittelachse 16 abgestrahlt wird. Ein geringer Anteil der Lichtstrahlen durchdringt die Reflexionsschicht 17 und die Basisschicht 4b. Dieser Anteil der Lichtstrahlen kann so groß sein, daß der Reflektorkörper 4a zumindest im Dunkeln von außen sichtbar leuchtet wobei die den Reflektorkörper 4a durchdringenden Lichtstrahlen an der Außenseite 19 bzw. Außenfläche 19a der Basisschicht 4b abstrahlen können und zur indirekten Beleuchtung des Raumes beitragen können. Aufgrund der teiltransparenten bzw. durchscheinenden Eigenschaft weist der Reflektorkörper 4a eine im Vergleich mit einem klar lichtdurchlässigen Reflektor 4 erhöhte Eigenleuchtdichte auf.In the lighting operation of the luminaire 1, a major portion of the reflection surface 15 incident light rays reflected, this main part in the resulting shown main radiation direction HR from the cavity 5 along the central axis 16 is emitted. A small proportion of the light rays penetrate the reflection layer 17 and the base layer 4b. This proportion of light rays can be so large that the Reflector body 4a is visible from the outside, at least in the dark, whereby the Reflecting body 4a penetrating light rays on the outside 19 or outer surface 19a of the base layer 4b can radiate and for indirect lighting of the room can contribute. Due to the partially transparent or translucent property has the reflector body 4a in comparison with a clearly translucent reflector 4 increased self-luminance.

Die Teillichtdurchlässigkeit der Reflexionsschicht 17 und der Basisschicht 4b ist so groß, daß die Struktur der Facetten 18, hier deren Begrenzungslinien 18a bei ausgeschalteter Lampe 12 und/oder bei eingeschalteter Lampe 12 (im Leuchtbetrieb) und bei normalem Raumlicht oder im dunklen Raum von außen sichtbar sind, z.B. als Schattenkanten, was in Fig. 1 mit gestrichelten Linien dargestellt ist.The partial light transmission of the reflection layer 17 and the base layer 4b is so great that the structure of the facets 18, here their boundary lines 18a when switched off Lamp 12 and / or with lamp 12 switched on (in the lighting mode) and with normal Room light or in the dark room are visible from the outside, e.g. as shadow edges, what in Fig. 1 is shown with dashed lines.

Bei dieser Ausgestaltung wird die störende Wirkung von an der Außenfläche 19a sichtbaren Lichtpunkten, die aufgrund von in der Reflexionsschicht 17 vorhandenen Perforationen resultieren, vermindert, da die Lichtstrahlen, die die Perforation in der Reflexionsschicht 17 durchdringen, durch das teillichtdurchlässige Material der Basisschicht 4b gedämpft werden und deshalb der Kontrast zwischen der Leuchtwirkung der leuchtenden Basisschicht 4b und den Lichtpunkten verringert wird. Dies wird auch dadurch begünstigt, daß die Farbpartikel der Farbe zur Streuung des austretenden Lichtes beitragen.With this configuration, the disruptive effect of Outer surface 19a visible points of light, which are due to in the reflection layer 17th existing perforations result, diminished because the light rays that the Penetrate perforation in the reflective layer 17 through the partially transparent Material of the base layer 4b are damped and therefore the contrast between the Luminous effect of the luminous base layer 4b and the light points is reduced. This is also favored by the fact that the color particles of the color for scattering the emerging light contribute.

Die erfindungsgemäßen Ausführungsbespiele nach den Fig. 3 und 4, bei denen gleiche oder vergleichbare Teile mit gleichen Bezugszeichen versehen sind, unterscheiden sich von dem vorbeschriebenen bekannten Ausführungsbeispiel dadurch, daß anstelle eines teiltransparenten Kunststoffmaterials für die Basisschicht 4b ein klar durchsichtiges Kunststoffmaterial verwendet wird und die Basisschicht 4b an ihrer Außenfläche 19a (Fig. 4) oder an ihrer Innenfläche 14a als Unterschicht für die Reflexionsschicht 17 mit einer teillichtdurchlässigen zusätzlichen Schicht 21 beschichtet ist, wodurch ähnliche Wirkungen erzielt werden. Auch in diesem Fall leuchtet der Reflektor 4 im Dunkeln und im Leuchtbetrieb sichtbar. Die Facettenstruktur ist von außen bei ausgeschalteter Lampe und/oder bei eingeschalteter Lampe (Leuchtbetrieb) sichtbar, wie es beim vorherigen Ausführungsbeispiel bereits beschrieben worden ist.3 and 4, in which the same or comparable Parts with the same reference numerals differ from that The known embodiment described above in that instead of a partially transparent Plastic material for the base layer 4b is a clear plastic material is used and the base layer 4b on its outer surface 19a (FIG. 4) or on its Inner surface 14a as a lower layer for the reflection layer 17 with a partially translucent additional layer 21 is coated, giving similar effects be achieved. In this case, too, the reflector 4 lights up in the dark and in Illuminated operation visible. The facet structure is from the outside when the lamp is switched off and / or visible when the lamp is on (lighting operation), as was the case with the previous one Embodiment has already been described.

Die Verrastungsvorrichtung 9 weist an dem einen Verbindungsteil eine oder mehrere Verrastungsnasen 23 auf, die quer zur Mittelachse 16 elastisch ausbiegbar sind und somit aufgrund Eigenelastizität in eine Verrastungsstellung vorgespannt sind, in der sie eine Verrastungsschulter 24 am anderen Verbindungsteil hintergreifen. Bei der vorliegenden Ausgestaltung sind die Verrastungsnasen 23 jeweils durch einen Verrastungsarm 25 gebildet, der sich in der Längsrichtung der Mittelachse 16 erstreckt, in eine Verrastungsausnehmung 26 einfaßt und eine darin ausgebildete Hinterschneidung hintergreift. Die Verrastungsnasen 23 sind vorzugsweise im Randbereich der Scheitelöffnung 11 angeordnet, wobei sie einteilig vom Reflektorkörper 4a oder von einer damit verbundenen Ringscheibe 27 als einteiliges Spritzgießteil, z. B. aus Kunststoff abstehen können. Die Ringscheibe 27 kann in einer die Firstöffnung 11 umgebenden Stellung mit dem Reflektorkörper 4a durch Schrauben, Nieten oder dergl. Befestigungselemente verbunden sein. Beim vorliegenden Ausführungbeispiel sind Verrastungsausnehmungen 26 im Basisteil 2 angeordnet. Dabei bilden sie durch die Aufnahme der Verrastungsnasen 23 in die Verrastungsausnehmung 26 eine Zentrierung des Reflektors 4 in Umfangsrichtung und in radialer Richtung. Für eine lösbare Verrastungsvorrichtung können mittels eines Stifts oder Schraubenziehers zugängliche Öffnungen am Basisteil 2 vorgeschrieben sein (nicht dargestellt), durch die hindurch die Verrastungsnasen 23 mit einem zugehörigen Werkzeug in ihre Freigabestellungen biegbar sind und dadurch die Verrastung lösbar ist.The latching device 9 has one or more on the one connecting part Locking lugs 23, which are elastically bendable transversely to the central axis 16 and thus are biased into a latching position in which they are due to their own elasticity Reach behind shoulder 24 on the other connecting part. In the present The locking lugs 23 are each configured by a locking arm 25 formed, which extends in the longitudinal direction of the central axis 16, in a Binding catch 26 and an undercut formed therein engages behind. The locking lugs 23 are preferably in the edge region of the The apex opening 11 is arranged in one piece from the reflector body 4a or from one associated washer 27 as a one-piece injection molded part, for. B. made of plastic can stand out. The annular disc 27 can surround the ridge opening 11 Position with the reflector body 4a by screws, rivets or the like. Fasteners are connected. In the present embodiment example Locking recesses 26 arranged in the base part 2. They form through the Recording the locking lugs 23 in the locking recess 26 centering the Reflector 4 in the circumferential direction and in the radial direction. For a detachable Locking devices can be accessed using a pin or screwdriver Openings on the base part 2 may be prescribed (not shown), through which the Locking lugs 23 can be bent into their release positions with an associated tool are and thereby the locking can be released.

Die für den elektrischen Betrieb der Leuchte 1 erforderlichen Betriebsmittel einschließlich einem Vorschaltgerät, wenn die Lampe durch eine Leuchtstofflampe gebildet ist, befinden sich im zylinderförmigen Basisteil 2, das vorzugsweise aus Leichtmetall besteht und zur besseren Abführung von Wärme Kühlmittel-Rippen auf seiner Mantelfläche aufweist. Elektrische Anschlüsse für nicht dargestellte elektrische Leitungen können im Bereich des Befestigungselements 3 angeordnet sein.The equipment required for the electrical operation of the lamp 1 including a ballast when the lamp is formed by a fluorescent lamp itself in the cylindrical base part 2, which is preferably made of light metal and has better heat dissipation of coolant fins on its outer surface. Electrical connections for electrical lines, not shown, can be in the range of Fastening element 3 may be arranged.

Claims (14)

  1. Reflector (4) for a light source, in particular for room illumination, of a self-supporting base layer (4b), which is of a transparent material, having a reflection layer (17) of partially reflecting and partially transparent material arranged on the inner side (14) towards the light source,
    characterized in that,
    the base layer (4b) has on its outer side (19) and/or inner side (14) under the reflection layer (17) a partially transparent additional layer (21).
  2. Reflector according to claim 1,
    characterized in that,
    the base layer (4b), preferably of plastics, is coloured.
  3. Reflector according to claim 1 or 2,
    characterized in that,
    the base layer (4b) and/or the additional layer (21) has or have a bright colour in the colour spectrum white to yellow or white to orange.
  4. Reflector according to any preceding claim,
    characterized in that,
    the reflection layer (17) is of metal, in particular aluminium.
  5. Reflector according to claim 4,
    characterized in that,
    the metal is vapour deposited.
  6. Reflector to any of claims 1 to 5,
    characterized in that,
    the additional layer (21) is a paint layer applied outside or inside on the base layer (4b).
  7. Reflector according to any preceding claim,
    characterized in that,
    the reflection surface (15), formed by the surface of the reflection layer (17), has facets (18).
  8. Reflection according to claim 7,
    characterized in that,
    the facets (18) are formed on the inner surface (14a) of the base layer (4b).
  9. Reflector according to claim 7 or 8,
    characterized in that,
    the partial transparency or light permeability of the base layer (4b) and/or of the additional layer (21) is so great that the structure of the facets (18) can be seen from the side of the reflector (4) which is away from the light source.
  10. Reflector according to any preceding claim,
    characterized in that,
    it has the form of a hollow dome with an opening (11) in the apex region.
  11. Reflector according to any preceding claim,
    characterized in that,
    it can be connected by means of a connection device with a base part (2) of a light (1).
  12. Reflector according to claim 11,
    characterized in that,
    the connection device is arranged in the region of the edge (11a) of the apex opening (11).
  13. Reflector according to claim 11 or 12,
    characterized in that,
    the connection device is formed by means of a latching device (9).
  14. Reflector according to claim 13,
    characterized in that,
    the latching device has one or more latching noses (23), arranged mutually oppositely and projecting approximately axis parallel and which can be splayed transversely thereof, on the one latching device part, which engage behind shoulder surfaces on the other latching device part.
EP98122979A 1998-01-14 1998-12-03 Reflector for a light source, in particular for space illumination Expired - Lifetime EP0930459B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19801128A DE19801128A1 (en) 1998-01-14 1998-01-14 Reflector for a light source, especially for room lighting
DE19801128 1998-01-14

Publications (3)

Publication Number Publication Date
EP0930459A2 EP0930459A2 (en) 1999-07-21
EP0930459A3 EP0930459A3 (en) 2001-08-29
EP0930459B1 true EP0930459B1 (en) 2004-10-06

Family

ID=7854578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98122979A Expired - Lifetime EP0930459B1 (en) 1998-01-14 1998-12-03 Reflector for a light source, in particular for space illumination

Country Status (3)

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EP (1) EP0930459B1 (en)
AT (1) ATE278909T1 (en)
DE (2) DE19801128A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006023120B4 (en) 2006-05-16 2010-10-14 Auer Lighting Gmbh Light reflector with defined sharpness of the light distribution generated by this
DE102013002892A1 (en) 2013-02-19 2014-08-21 Volkswagen Aktiengesellschaft Lighting device for motor vehicle, has reflector with two components, where former component is opaque, has light color and is adapted to reflect light emitted on it from illuminant, and two components are made of plastic
FR3022330B1 (en) * 2014-06-16 2019-04-05 Valeo Vision LUMINOUS MODULE FOR LIGHTING AND / OR SIGNALING OF A MOTOR VEHICLE

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES388222A1 (en) * 1971-02-12 1973-09-01 Rubio Reqena Luminaire system by reflection-transmission. (Machine-translation by Google Translate, not legally binding)
JPS61277102A (en) * 1985-04-05 1986-12-08 マンヴイル　コ−ポレ−シヨン Reflector
DE8804149U1 (en) * 1988-03-26 1988-06-09 Hoffmeister-Leuchten Gmbh & Co Kg, 5880 Luedenscheid, De
DE3811297A1 (en) * 1988-04-02 1989-10-12 Licentia Gmbh LAMP WITH TRANSPARENT LAMP HOUSING
DE8900921U1 (en) * 1989-01-27 1989-03-23 Herbert Waldmann Gmbh & Co, 7730 Villingen-Schwenningen, De
US5143446A (en) * 1992-02-11 1992-09-01 Lexalite International Corporation Lighting fixture with an improved light transmitting film
DE9217201U1 (en) * 1992-12-16 1993-02-11 Hoepler, Johann, 8176 Waakirchen, De
DE9412022U1 (en) * 1994-07-25 1995-11-23 Michl Oliver lamp
SE9403927L (en) * 1994-11-14 1996-05-13 Svelux Ind Ab Reflector
DE19540414C1 (en) * 1995-10-30 1997-05-22 Fraunhofer Ges Forschung Economical, lightweight, heat-resistant cold light reflector that does not break easily
FR2741699A1 (en) * 1995-11-24 1997-05-30 Boban Leonard Fixing ring with projecting clips to fit shade to base of table lamp
DE19638367A1 (en) * 1995-12-22 1997-06-26 Zumtobel Licht Luminaire with at least one lamp and at least one reflector and method for producing a reflector
DE19615388A1 (en) * 1996-04-18 1997-10-23 Zumtobel Licht Luminaire with a particularly small-volume lamp

Also Published As

Publication number Publication date
DE19801128A1 (en) 1999-07-15
ATE278909T1 (en) 2004-10-15
DE59812080D1 (en) 2004-11-11
EP0930459A2 (en) 1999-07-21
EP0930459A3 (en) 2001-08-29

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