EP0676584A1 - Reflector lamp - Google Patents

Reflector lamp Download PDF

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Publication number
EP0676584A1
EP0676584A1 EP95103916A EP95103916A EP0676584A1 EP 0676584 A1 EP0676584 A1 EP 0676584A1 EP 95103916 A EP95103916 A EP 95103916A EP 95103916 A EP95103916 A EP 95103916A EP 0676584 A1 EP0676584 A1 EP 0676584A1
Authority
EP
European Patent Office
Prior art keywords
light
housing
rear wall
channel
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP95103916A
Other languages
German (de)
French (fr)
Inventor
Achim Dr. Willing
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ansorg GmbH
Original Assignee
Ansorg GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ansorg GmbH filed Critical Ansorg GmbH
Publication of EP0676584A1 publication Critical patent/EP0676584A1/en
Withdrawn legal-status Critical Current

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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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/002—Table lamps, e.g. for ambient lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/16—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • 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
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/37—U-shaped

Definitions

  • the invention relates to a reflector lamp with a housing which has a rear wall provided on the inside with a mirror surface, with a punctiform or short linear light source, in particular a compact fluorescent lamp, and with at least one plate arranged in the housing at a channel-forming distance from the rear wall, which has a mirror surface on its front side assigned to the light source and a light-absorbing surface on its rear side, wherein the light channel delimited by the plate and the rear wall has a light entry gap near the light source and a light exit window on the edge of the housing and the front of the plate provided with the mirror surface is assigned to a light exit opening on the housing side for illuminating a close range.
  • a reflector lamp with the described features is known from EP-A-0 030 740.
  • the plate connects to the light exit opening at an angle of 60 °.
  • the light exit opening and the light exit window of the light channel are arranged in one plane.
  • the reflected light enters parallel light rays from the light exit window and the light exit opening.
  • the range of the directly emerging light portion is reduced by the plate inserted in the housing.
  • the known reflector lamp enables largely glare-free illumination of a relatively narrow area.
  • Reflector lights with a housing that has a rear surface provided on the inside with a mirror surface, and with a punctiform or short linear light source, in particular a compact fluorescent lamp, are widely used in practice as table, floor and pendant lights.
  • the rear mirror surface is concavely curved or is composed of flat mirror surface sections which are inclined at an angle of 30 ° to 45 ° to the horizontal.
  • the reflector lights must be arranged at a relatively small distance from the surface to be illuminated. As part of the known measures, they are used to illuminate a close range. A glare-free illumination of large areas, for example desks and conference tables, is not possible to a satisfactory degree.
  • ceiling lights with long fluorescent tubes which have lengths of one meter and more, anti-glare measures in the form of parallel or lattice-shaped slats are known and are described, for example, in DE-A-38 28 694.
  • the slats are aligned vertically.
  • Such ceiling lights give a uniform Suitable diffuse light from room lighting. They are not suitable for workplace lighting and for brightly illuminating a table surface, for example a conference table.
  • the known lamellae or lattice-shaped shields are unsuitable for point light sources and for short compact fluorescent lamps, since the light cone is severely restricted.
  • the invention has for its object to provide a suitable for workplace lighting reflector lamp of the type described, with which a wide, uniform and glare-free object illumination is possible at a small distance from an object to be illuminated.
  • the invention teaches that for the purpose of illuminating a region lying further close to the near area, the plate connects at an angle of 15 ° to 45 ° to the light outlet opening on the housing side and the light exit window of the light channel delimited by the plate on the jacket side of the Housing is arranged and angularly adjacent to the light outlet opening on the housing side.
  • the light exit window and the light exit opening on the housing side lie in different, intersecting planes.
  • the jacket-side light exit window and the light exit opening on the underside of the housing are preferably arranged at right angles to one another. A glare-free light exit from the light channel is guaranteed if the light exit window and the The light entry gap of the light channel does not overlap in the projection.
  • the projection plane is the plane orthogonal to the lower light exit opening.
  • the section of the rear wall assigned to the light channel and the plate preferably run parallel or diverging outwards at an opening angle of at most 10 °.
  • the light entry gap should be arranged laterally from the light source, however, in comparison to the latter at a greater distance from the light exit opening on the housing side near the rear wall of the housing.
  • the rear wall is expediently curved concavely in the region of the light entry slit, with light bundling to form the light channel.
  • the light emerging from the light channel is directed and has a different orientation than the reflected light leaving the light outlet opening on the housing side.
  • Claims 6 and 7 teach further designs of the lamp according to the invention.
  • the housing 1 of the reflector lamp shown in the figures has a trough-shaped design and has a rear wall 3, which is provided on the inside completely with a mirror surface 2, and end walls 4 adjoining it.
  • the end walls 4 can also be provided with mirror surfaces on the inside.
  • a light source 5 in the form of a compact fluorescent lamp is arranged on an end wall 4 and extends parallel to the rear wall 3.
  • a plate 6 can also be seen, which is arranged in the housing 1 at a channel-forming distance from the rear wall 3. It has a mirror surface 2 on its front side assigned to the light source and a light-absorbing, preferably matt black surface 7 on its rear side.
  • the light channel 8 delimited by the plate 6 and the rear wall 3 has a light entry gap 9 near the light source 5 and a light exit surface 10 on the housing edge.
  • the front side of the plate 6 provided with the mirror surface 2 is assigned to a light exit opening 11 on the housing side. This part of the luminaire with light outlet opening 11 on the underside serves to illuminate a close range.
  • the light exit window 10 of the light channel 8 is arranged on the long side of the housing 1, at right angles to the light exit opening 11 on the underside of the housing. A further lying area adjoining the close-up area can be illuminated by the light channel 8.
  • the light channel 8 is delimited by flat wall surfaces.
  • the plate 6 and the associated section of the rear wall 3 are at an angle ⁇ of 15 ° to 45 °, preferably approximately 30 °, to the light exit opening 11 on the housing side arranged.
  • the rear wall 3 and the plate 6 run parallel or, as in the exemplary embodiment, diverging outwards at an opening angle of at most 10 °.
  • the light entry gap 9 is arranged to the side of the light source 5, but in comparison to this at a greater distance from the light exit opening 11 on the housing side near the rear wall 3 of the housing 1. It can be seen from the figures that the light exit window 10 and the light entry slit 9 do not overlap in the projection, specifically in a projection plane P orthogonal to the lower light exit opening 11.
  • the illumination of the distant area is further improved in that the rear wall 3 is concavely curved in the area of the light entry gap 9, with light bundling to the light channel 8 taking place.
  • a conventional air gap 12 is provided above the light source 5 for cooling the light source 5.
  • the light source 5 is arranged in the plane of symmetry 13 of a symmetrically designed housing 1.
  • a plate 6 with a mirror surface 2 on the front and a light-absorbing surface 7 on the rear is arranged on both sides of the plane of symmetry 13 in the manner already described.
  • the reflector lamp shown in the figures can primarily be used as a table lamp, floor lamp or low-hanging lamp. A wide, glare-free It is possible to illuminate objects such as desks. Light sources with high light intensity can be used without the risk of glare.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The reflector light has a reflector housing (1) with a reflective inside rear wall (3), enclosing the gas discharge lamp (5), with a plate (6) spaced from the rear wall having a reflective surface on the side facing the lamp and a light-absorbing surface on the opposite side. The light channel defined between the plate and the housing rear wall has a light entry (9) adjacent the lamp and an exit window (10) adjacent the housing edge, at a given angle to the light output opening (11) of the housing. Pref. the plate is angled at between 15 and 45 degrees to the light output opening. <IMAGE>

Description

Die Erfindung betrifft eine Reflektorleuchte
   mit einem Gehäuse, das eine innenseitig mit einer Spiegelfläche versehene Rückwand aufweist,
   mit einer punktförmigen oder kurzbauenden linearen Lichtquelle, insbesondere einer Kompaktleuchtstofflampe, und
   mit mindestens einer im Gehäuse in kanalbildendem Abstand zur Rückwand angeordneten Platte, die an ihrer der Lichtquelle zugeordneten Vorderseite eine Spiegelfläche sowie an ihrer Rückseite eine lichtabsorbierende Fläche aufweist,
wobei der von der Platte und der Rückwand begrenzte Lichtkanal einen Lichteintrittsspalt nahe der Lichtquelle sowie gehäuserandseitig ein Lichtaustrittsfenster aufweist und wobei die mit der Spiegelfläche versehene Vorderseite der Platte einer gehäuseunterseitigen Lichtaustrittsöffnung zur Ausleuchtung eines Nahbereiches zugeordnet ist.The invention relates to a reflector lamp
with a housing which has a rear wall provided on the inside with a mirror surface,
with a punctiform or short linear light source, in particular a compact fluorescent lamp, and
with at least one plate arranged in the housing at a channel-forming distance from the rear wall, which has a mirror surface on its front side assigned to the light source and a light-absorbing surface on its rear side,
wherein the light channel delimited by the plate and the rear wall has a light entry gap near the light source and a light exit window on the edge of the housing and the front of the plate provided with the mirror surface is assigned to a light exit opening on the housing side for illuminating a close range.

Eine Reflektorleuchte mit den beschriebenen Merkmalen ist aus EP-A-0 030 740 bekannt. Im Rahmen der bekannten Maßnahmen schließt die Platte unter einem Winkel von 60° an die Lichtaustrittsöffnung an. Die Lichtaustrittsöffnung sowie das Lichtaustrittsfenster des Lichtkanals sind in einer Ebene angeordnet. Das reflektierte Licht tritt in parallelen Lichtstrahlen aus dem Lichtaustrittsfenster sowie der Lichtaustrittsöffnung aus. Der Streubereich des direkt austretenden Lichtanteils ist durch die in das Gehäuse eingesetzte Platte reduziert. Die bekannte Reflektorleuchte ermöglicht eine weitgehend blendfreie Ausleuchtung eines verhältnismäßig eng begrenzten Bereiches.A reflector lamp with the described features is known from EP-A-0 030 740. As part of the known measures, the plate connects to the light exit opening at an angle of 60 °. The light exit opening and the light exit window of the light channel are arranged in one plane. The reflected light enters parallel light rays from the light exit window and the light exit opening. The range of the directly emerging light portion is reduced by the plate inserted in the housing. The known reflector lamp enables largely glare-free illumination of a relatively narrow area.

Reflektorleuchten mit einem Gehäuse, das eine innenseitig mit einer Spiegelfläche versehene Rückwand aufweist, und mit einer punktförmigen oder kurzbauenden linearen Lichtquelle, insbesondere einer Kompaktleuchtstofflampe, werden in der Praxis vielfach als Tisch-, Steh- und Hängeleuchten eingesetzt. Die rückwärtige Spiegelfläche ist konkav gekrümmt oder setzt sich aus ebenen Spiegelflächenabschnitten zusammen, die unter einem Winkel von 30° bis 45° zur Horizontalen geneigt angeordnet sind. Zur Vermeidung einer störenden Blendung müssen die Reflektorleuchten mit relativ kleinem Abstand von der auszuleuchtenden Fläche angeordnet werden. Im Rahmen der bekannten Maßnahmen werden sie eingesetzt, um einen Nahbereich auszuleuchten. Eine blendfreie Ausleuchtung großer Flächen, beispielsweise von Schreibtischen und Konferenztischen, ist nicht in befriedigendem Maße möglich.Reflector lights with a housing that has a rear surface provided on the inside with a mirror surface, and with a punctiform or short linear light source, in particular a compact fluorescent lamp, are widely used in practice as table, floor and pendant lights. The rear mirror surface is concavely curved or is composed of flat mirror surface sections which are inclined at an angle of 30 ° to 45 ° to the horizontal. To avoid annoying glare, the reflector lights must be arranged at a relatively small distance from the surface to be illuminated. As part of the known measures, they are used to illuminate a close range. A glare-free illumination of large areas, for example desks and conference tables, is not possible to a satisfactory degree.

Bei Deckenleuchten mit langbauenden Leuchtröhren, die Längen von einem Meter und mehr aufweisen, sind Blendschutzmaßnahmen in Form paralleler oder gitterförmig angeordneter Lamellen bekannt und beispielsweise in DE-A-38 28 694 beschrieben. Die Lamellen sind vertikal ausgerichtet. Solche Deckenleuchten geben ein für eine gleichmäßige Raumausleuchtung geeignetes diffuses Licht ab. Für die Arbeitsplatzbeleuchtung und zur hellen Ausleuchtung einer Tischfläche, beispielsweise eines Konferenztisches, sind sie nicht geeignet. Für punktförmige Lichtquellen sowie für kurzbauende Kompaktleuchtstofflampen sind die bekannten Lamellen oder gitterförmigen Abschirmungen ungeeignet, da der Lichtkegel stark eingeschränkt wird.In ceiling lights with long fluorescent tubes, which have lengths of one meter and more, anti-glare measures in the form of parallel or lattice-shaped slats are known and are described, for example, in DE-A-38 28 694. The slats are aligned vertically. Such ceiling lights give a uniform Suitable diffuse light from room lighting. They are not suitable for workplace lighting and for brightly illuminating a table surface, for example a conference table. The known lamellae or lattice-shaped shields are unsuitable for point light sources and for short compact fluorescent lamps, since the light cone is severely restricted.

Der Erfindung liegt die Aufgabe zugrunde, eine für die Arbeitsplatzbeleuchtung geeignete Reflektorleuchte der eingangs beschriebenen Art anzugeben, mit der bei kleinem Abstand von einem zu beleuchtenden Objekt eine weite, gleichmäßige und blendfreie Objektausleuchtung möglich ist.The invention has for its object to provide a suitable for workplace lighting reflector lamp of the type described, with which a wide, uniform and glare-free object illumination is possible at a small distance from an object to be illuminated.

Zur Lösung dieser Aufgabe lehrt die Erfindung, daß zum Zwecke der Ausleuchtung eines an den Nahbereich anschließenden ferner liegenden Bereiches die Platte unter einem Winkel von 15° bis 45° an die gehäuseunterseitige Lichtaustrittsöffnung anschließt sowie das Lichtaustrittsfenster des von der Platte begrenzten Lichtkanals an der Mantelseite des Gehäuses angeordnet ist und winklig an die gehäuseunterseitige Lichtaustrittsöffnung angrenzt. Das Lichtaustrittsfenster und die gehäuseunterseitige Lichtaustrittsöffnung liegen in unterschiedlichen, einander schneidenden Ebenen. Vorzugsweise sind das mantelseitige Lichtaustrittsfenster und die Lichtaustrittsöffnung an der Gehäuseunterseite im rechten Winkel zueinander angeordnet. Ein blendfreier Lichtaustritt aus dem Lichtkanal ist dann gewährleistet, wenn das Lichtaustrittsfenster und der Lichteintrittsspalt des Lichtkanals sich in der Projektion nicht überlappen. Projektionsebene ist die zur unteren Lichtaustrittsöffnung orthogonale Ebene.To achieve this object, the invention teaches that for the purpose of illuminating a region lying further close to the near area, the plate connects at an angle of 15 ° to 45 ° to the light outlet opening on the housing side and the light exit window of the light channel delimited by the plate on the jacket side of the Housing is arranged and angularly adjacent to the light outlet opening on the housing side. The light exit window and the light exit opening on the housing side lie in different, intersecting planes. The jacket-side light exit window and the light exit opening on the underside of the housing are preferably arranged at right angles to one another. A glare-free light exit from the light channel is guaranteed if the light exit window and the The light entry gap of the light channel does not overlap in the projection. The projection plane is the plane orthogonal to the lower light exit opening.

Der dem Lichtkanal zugeordnete Abschnitt der Rückwand und die Platte verlaufen vorzugsweise parallel oder unter einem Öffnungswinkel von maximal 10° nach außen divergierend. Der Lichteintrittsspalt sollte seitlich von der Lichtquelle aber im Vergleich zu dieser mit größerem Abstand von der gehäuseunterseitigen Lichtaustrittsöffnung nahe der Rückwand des Gehäuses angeordnet sein. Zweckmäßigerweise ist die Rückwand im Bereich des Lichteintrittsspaltes konkav gekrümmt, wobei eine Lichtbündelung zum Lichtkanal erfolgt. Das aus dem Lichtkanal austretende Licht ist gerichtet und hat eine andere Ausrichtung als das die gehäuseunterseitige Lichtaustrittsöffnung verlassende reflektierte Licht. Die Ansprüche 6 und 7 lehren weitere Ausführungen der erfindungsgemäßen Leuchte.The section of the rear wall assigned to the light channel and the plate preferably run parallel or diverging outwards at an opening angle of at most 10 °. The light entry gap should be arranged laterally from the light source, however, in comparison to the latter at a greater distance from the light exit opening on the housing side near the rear wall of the housing. The rear wall is expediently curved concavely in the region of the light entry slit, with light bundling to form the light channel. The light emerging from the light channel is directed and has a different orientation than the reflected light leaving the light outlet opening on the housing side. Claims 6 and 7 teach further designs of the lamp according to the invention.

Im folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung ausführlich erläutert. Es zeigen

Fig. 1
schematisch eine erfindungsgemäße Reflektorleuchte im Schnitt,
Fig. 2
eine weitere Ausführung der erfindungsgemäßen Leuchte, ebenfalls im Schnitt.
In the following, the invention is explained in detail with reference to a drawing that shows only one exemplary embodiment. Show it
Fig. 1
schematically a reflector lamp according to the invention in section,
Fig. 2
a further embodiment of the lamp according to the invention, also in section.

Das Gehäuse 1 der in den Figuren dargestellten Reflektorleuchte ist trogförmig ausgebildet und weist eine innenseitig vollständig mit einer Spiegelfläche 2 versehene Rückwand 3 und daran anschließende Stirnwände 4 auf. Auch die Stirnwände 4 können innenseitig mit Spiegelflächen versehen sein. An einer Stirnwand 4 ist eine Lichtquelle 5 in Form einer Kompaktleuchtstofflampe angeordnet, die sich parallel zur Rückwand 3 erstreckt. Man erkennt ferner eine Platte 6, die mit kanalbildendem Abstand zur Rückwand 3 im Gehäuse 1 angeordnet ist. Sie weist an ihrer der Lichtquelle zugeordneten Vorderseite eine Spiegelfläche 2 sowie an ihrer Rückseite eine lichtabsorbierende, vorzugsweise mattschwarze Fläche 7 auf. Der von der Platte 6 und der Rückwand 3 begrenzte Lichtkanal 8 besitzt einen Lichteintrittsspalt 9 nahe der Lichtquelle 5 sowie gehäuserandseitig eine Lichtaustrittsfläche 10. Die mit der Spiegelfläche 2 versehene Vorderseite der Platte 6 ist einer gehäuseunterseitigen Lichtaustrittsöffnung 11 zugeordnet. Dieser Teil der Leuchte mit unterseitiger Lichtaustrittsöffnung 11 dient zur Ausleuchtung eines Nahbereiches. Das Lichtaustrittsfenster 10 des Lichtkanals 8 ist an der Längsseite des Gehäuses 1, im rechten Winkel zu der gehäuseunterseitigen Lichtaustrittsöffnung 11 angeordnet. Durch den Lichtkanal 8 ist ein an den Nahbereich anschließender ferner liegender Bereich ausleuchtbar.The housing 1 of the reflector lamp shown in the figures has a trough-shaped design and has a rear wall 3, which is provided on the inside completely with a mirror surface 2, and end walls 4 adjoining it. The end walls 4 can also be provided with mirror surfaces on the inside. A light source 5 in the form of a compact fluorescent lamp is arranged on an end wall 4 and extends parallel to the rear wall 3. A plate 6 can also be seen, which is arranged in the housing 1 at a channel-forming distance from the rear wall 3. It has a mirror surface 2 on its front side assigned to the light source and a light-absorbing, preferably matt black surface 7 on its rear side. The light channel 8 delimited by the plate 6 and the rear wall 3 has a light entry gap 9 near the light source 5 and a light exit surface 10 on the housing edge. The front side of the plate 6 provided with the mirror surface 2 is assigned to a light exit opening 11 on the housing side. This part of the luminaire with light outlet opening 11 on the underside serves to illuminate a close range. The light exit window 10 of the light channel 8 is arranged on the long side of the housing 1, at right angles to the light exit opening 11 on the underside of the housing. A further lying area adjoining the close-up area can be illuminated by the light channel 8.

Der Lichtkanal 8 ist von ebenen Wandflächen begrenzt. Die Platte 6 und der zugeordnete Abschnitt der Rückwand 3 sind unter einem Winkel α von 15° bis 45°, vorzugsweise etwa 30°, zu der gehäuseunterseitigen Lichtaustrittsöffnung 11 angeordnet. Dabei verlaufen die Rückwand 3 und die Platte 6 parallel oder, wie im Ausführungsbeispiel, unter einem Öffnungswinkel von maximal 10° nach außen divergierend. Der Lichteintrittsspalt 9 ist seitlich von der Lichtquelle 5, aber im Vergleich zu dieser mit größerem Abstand von der gehäuseunterseitigen Lichtaustrittsöffnung 11 nahe der Rückwand 3 des Gehäuses 1 angeordnet. Den Figuren entnimmt man, daß das Lichtaustrittsfenster 10 und der Lichteintrittsspalt 9 sich in der Projektion, und zwar in einer zur unteren Lichtaustrittsöffnung 11 orthogonalen Projektionsebene P, nicht überlappen. Dadurch ist eine blendfreie Ausleuchtung des fernliegenden Bereiches gewährleistet. Die Ausleuchtung des fernliegenden Bereiches wird dadurch noch verbessert, daß die Rückwand 3 im Bereich des Lichteintrittsspaltes 9 konkav gekrümmt ist, wobei eine Lichtbündelung zum Lichtkanal 8 erfolgt. Zur Kühlung der Lichtquelle 5 ist ein üblicher Luftspalt 12 oberhalb der Lichtquelle 5 vorgesehen.The light channel 8 is delimited by flat wall surfaces. The plate 6 and the associated section of the rear wall 3 are at an angle α of 15 ° to 45 °, preferably approximately 30 °, to the light exit opening 11 on the housing side arranged. The rear wall 3 and the plate 6 run parallel or, as in the exemplary embodiment, diverging outwards at an opening angle of at most 10 °. The light entry gap 9 is arranged to the side of the light source 5, but in comparison to this at a greater distance from the light exit opening 11 on the housing side near the rear wall 3 of the housing 1. It can be seen from the figures that the light exit window 10 and the light entry slit 9 do not overlap in the projection, specifically in a projection plane P orthogonal to the lower light exit opening 11. This ensures glare-free illumination of the remote area. The illumination of the distant area is further improved in that the rear wall 3 is concavely curved in the area of the light entry gap 9, with light bundling to the light channel 8 taking place. A conventional air gap 12 is provided above the light source 5 for cooling the light source 5.

Bei der in Fig. 2 dargestellten Ausführung der erfindungsgemäßen Leuchte ist die Lichtquelle 5 in der Symmetrieebene 13 eines symmetrisch ausgebildeten Gehäuses 1 angeordnet. Beidseits der Symmetrieebene 13 ist jeweils eine Platte 6 mit vorderseitiger Spiegelfläche 2 und rückseitiger, lichtabsorbierender Fläche 7 in der schon beschriebenen Weise angeordnet.In the embodiment of the luminaire according to the invention shown in FIG. 2, the light source 5 is arranged in the plane of symmetry 13 of a symmetrically designed housing 1. A plate 6 with a mirror surface 2 on the front and a light-absorbing surface 7 on the rear is arranged on both sides of the plane of symmetry 13 in the manner already described.

Die in den Figuren dargestellte Reflektorleuchte ist vornehmlich als Tischleuchte, Stehleuchte oder tief abgehängte Hängeleuchte einsetzbar. Eine weite, blendfreie Ausleuchtung von Objekten, beispielsweise von Schreibtischen, ist möglich. Dabei sind Lichtquellen mit hoher Lichtstärke einsetzbar, ohne daß die Gefahr einer Blendung besteht.The reflector lamp shown in the figures can primarily be used as a table lamp, floor lamp or low-hanging lamp. A wide, glare-free It is possible to illuminate objects such as desks. Light sources with high light intensity can be used without the risk of glare.

Claims (7)

Reflektorleuchte
   mit einem Gehäuse (1), das eine innenseitig mit einer Spiegelfläche versehene Rückwand (3) aufweist,
   mit einer punktförmigen oder kurzbauenden linearen Lichtquelle (5), insbesondere einer Kompaktleuchtstofflampe, und
   mit mindestens einer im Gehäuse (1) in kanalbildendem Abstand zur Rückwand (3) angeordneten Platte (6), die an ihrer der Lichtquelle zugeordneten Vorderseite eine Spiegelfläche (2) sowie an ihrer Rückseite eine lichtabsorbierende Fläche (7) aufweist,
wobei der von der Platte (6) und der Rückwand (3) begrenzte Lichtkanal einen Lichteintrittsspalt (9) nahe der Lichtquelle (5) sowie gehäuserandseitig ein Lichtaustrittsfenster (10) aufweist und wobei die mit der Spiegelfläche (2) versehene Vorderseite der Platte (6) einer gehäuseunterseitigen Lichtaustrittsöffnung (11) zur Ausleuchtung eines Nahbereiches zugeordnet ist, dadurch gekennzeichnet, daß zum Zwecke der Ausleuchtung eines an den Nahbereich anschließenden ferner liegenden Bereiches die Platte (6) unter einem Winkel von 15° bis 45° an die gehäuseunterseitige Lichtaustrittsöffnung (11) anschließt sowie das Lichtaustrittsfenster (10) des von der Platte (6) begrenzten Lichtkanals (8) an der Mantelseite des Gehäuses angeordnet ist und winklig an die gehäuseunterseitige Lichtaustrittsöffnung (11) angrenzt.Reflector lamp
with a housing (1) which has a rear wall (3) provided on the inside with a mirror surface,
with a punctiform or short linear light source (5), in particular a compact fluorescent lamp, and
with at least one plate (6) arranged in the housing (1) at a channel-forming distance from the rear wall (3), which has a mirror surface (2) on its front side assigned to the light source and a light-absorbing surface (7) on its rear side,
wherein the light channel delimited by the plate (6) and the rear wall (3) has a light entry slit (9) near the light source (5) and a light exit window (10) on the side of the housing and the front side of the plate (6) provided with the mirror surface (2) ) is associated with a light outlet opening (11) on the housing for illuminating a close-up area, characterized in that for the purpose of illuminating a further lying area adjacent to the close-up area, the plate (6) is at an angle of 15 ° to 45 ° to the light outlet opening (11 ) and the light exit window (10) of the light channel (8) delimited by the plate (6) is arranged on the jacket side of the housing and is angularly adjacent to the housing-side light outlet opening (11). Reflektorleuchte nach Anspruch 1, dadurch gekennzeichnet, daß das Lichtaustrittsfenster (10) des Lichtkanals (8) und die Lichtaustrittsöffnung (11) an der Gehäuseunterseite im rechten Winkel zueinander angeordnet sind.Reflector luminaire according to claim 1, characterized in that the light exit window (10) of the light channel (8) and the light exit opening (11) on the underside of the housing are arranged at right angles to one another. Reflektorleuchte nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der dem Lichtkanal (8) zugeordnete Abschnitt der Rückwand (3) und die Platte (6) parallel oder unter einem Öffnungswinkel von maximal 10° nach außen divergierend verlaufen.Reflector luminaire according to claim 1 or 2, characterized in that the section of the rear wall (3) and the plate (6) assigned to the light channel (8) run parallel or diverging outwards at an opening angle of at most 10 °. Reflektorleuchte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Lichteintrittsspalt (9) des Lichtkanals (8) seitlich von der Lichtquelle (5), aber im Vergleich zu dieser mit größerem Abstand von der gehäuseunterseitigen Lichtaustrittsöffnung (11) nahe der Rückwand (3) des Gehäuses (1) angeordnet ist.Reflector luminaire according to one of claims 1 to 3, characterized in that the light entry slit (9) of the light channel (8) is to the side of the light source (5), but in comparison to it at a greater distance from the light outlet opening (11) on the housing side near the rear wall ( 3) of the housing (1) is arranged. Reflektorleuchte nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Rückwand (3) des Gehäuses (1) im Bereich des Lichteintrittsspaltes (9) konkav gekrümmt ist, wobei eine Lichtbündelung zum Lichtkanal (8) erfolgt.Reflector luminaire according to one of claims 1 to 4, characterized in that the rear wall (3) of the housing (1) is concavely curved in the region of the light entry slit (9), with light bundling to the light channel (8). Reflektorleuchte nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Gehäuse (1) trogförmig ausgebildet ist und Stirnwände (4) aufweist, die an die Rückwand (3) anschließen, daß die Lichtquelle (5) an einer Stirnwand (4) angeordnet ist und sich parallel zur Rückwand (3) erstreckt und daß der Lichtkanal (8) von ebenen Wandflächen begrenzt ist.Reflector lamp according to one of claims 1 to 5, characterized in that the housing (1) is trough-shaped and has end walls (4) which connect to the rear wall (3), that the light source (5) is arranged on an end wall (4) is and extends parallel to the rear wall (3) and that the light channel (8) is delimited by flat wall surfaces. Reflektorleuchte nach Anspruch 6, dadurch gekennzeichnet, daß das Gehäuse (1) zwei Platten (6) mit vorderseitiger Spiegelfläche (2) und rückseitiger lichtabsorbierender Fläche (7) aufweist, die beidseits einer Symmetrieebene (13) des symmetrisch ausgebildeten Gehäuses (1) mit kanalbildendem Abstand von der Rückwand (3) des Gehäuses (1) angeordnet sind und Lichtkanäle (8) zur Ausleuchtung von an den Nahbereich beidseits anschließenden ferner liegenden Bereichen bilden, wobei die Lichtquelle (5) in der Symmetrieebene (13) des Gehäuses (1) angeordnet ist.Reflector luminaire according to claim 6, characterized in that the housing (1) has two plates (6) with a mirror surface (2) on the front and a light-absorbing surface (7) on the rear, which has a channel-forming surface on both sides of a symmetry plane (13) of the symmetrically designed housing (1) Are arranged at a distance from the rear wall (3) of the housing (1) and form light channels (8) for illuminating further regions which are adjacent to the near region on both sides, the light source (5) being arranged in the plane of symmetry (13) of the housing (1) is.
EP95103916A 1994-04-07 1995-03-17 Reflector lamp Withdrawn EP0676584A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4411891A DE4411891A1 (en) 1994-04-07 1994-04-07 Reflector lamp
DE4411891 1994-04-07

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Cited By (1)

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CN100424581C (en) * 2004-06-14 2008-10-08 佳能株式会社 Illumination apparatus and image-taking apparatus

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DE29608354U1 (en) * 1996-05-08 1996-06-27 Trilux Lenze Gmbh & Co Kg Workplace lamp

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EP0017146A1 (en) * 1979-03-30 1980-10-15 Siemens Aktiengesellschaft Table lamp for fluorescent tubes
US4683526A (en) * 1985-11-06 1987-07-28 Jac Jacobsen A/S Asymmetric lamp

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US4293901A (en) * 1979-12-17 1981-10-06 Esquire, Inc. Reflector system having sharp light cutoff characteristics
AU8239182A (en) * 1981-06-15 1982-12-23 Esquire, Inc. Lighting fixture with relamping socket apparatus
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FR801784A (en) * 1935-02-11 1936-08-17 Improvement in lighting devices
US2560281A (en) * 1945-11-29 1951-07-10 Sight Light Corp Luminaire with glare shielding means for producing an optimum distribution of light on a work surface
EP0017146A1 (en) * 1979-03-30 1980-10-15 Siemens Aktiengesellschaft Table lamp for fluorescent tubes
US4683526A (en) * 1985-11-06 1987-07-28 Jac Jacobsen A/S Asymmetric lamp

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100424581C (en) * 2004-06-14 2008-10-08 佳能株式会社 Illumination apparatus and image-taking apparatus

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