EP1359371B1 - Luminaire with a diffuser - Google Patents

Luminaire with a diffuser Download PDF

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Publication number
EP1359371B1
EP1359371B1 EP03005321A EP03005321A EP1359371B1 EP 1359371 B1 EP1359371 B1 EP 1359371B1 EP 03005321 A EP03005321 A EP 03005321A EP 03005321 A EP03005321 A EP 03005321A EP 1359371 B1 EP1359371 B1 EP 1359371B1
Authority
EP
European Patent Office
Prior art keywords
diffuser
lamp
basket
wall
region
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.)
Expired - Lifetime
Application number
EP03005321A
Other languages
German (de)
French (fr)
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EP1359371A1 (en
Inventor
Thomas Schmölz
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.)
ZUMTOBEL LIGHTING GmbH
Original Assignee
Zumtobel Staff GmbH
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Publication date
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Publication of EP1359371A1 publication Critical patent/EP1359371A1/en
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Anticipated expiration legal-status Critical
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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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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
    • 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
    • F21V13/12—Combinations of only three kinds of elements
    • F21V13/14—Combinations of only three kinds of elements the elements being filters or photoluminescent elements, reflectors and refractors
    • 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
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • 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
    • 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
    • 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 invention relates to a luminaire with a tubular gas discharge lamp and a - viewed from the area to be illuminated - in front of the lamp arranged diffuser basket, which consists at least partially of a material forming a part-wall permeable wall.
  • a luminaire of this type is described in DE 100 06 410 A.
  • a lamp chamber accommodating the gas discharge lamp is bounded by a diffuser basket to the area to be illuminated. It is the purpose of the diffuser basket, on the one hand to protect the lamp chamber both against damage and against contamination, and on the other to scatter the light emitted by the lamp light and thereby bring about an at least transversely effective glare, so that a glare for Persons who are in the area to be illuminated or space at normal viewing angle, prevented or at least reduced.
  • the optics or diffuser basket may consist of an outer grid which is internally coated with a translucent material, e.g. B. plastic, is occupied.
  • a translucent material e.g. B. plastic
  • FR 2 267 518 design a luminaire of the generic type such that the wall opposite the diffuser basket has an opening which forms an air outlet opening.
  • the diffuser basket is designed such that openings are formed in the connecting region between the diffuser basket and the lamp housing, through which air can flow. In this way, an air circulation is enabled, which prevents the formation of a heat accumulation.
  • the problem is, however, that the diffuser basket for forming the openings for the Air inlet must be specially designed, which in turn affects the reliability of attachment of the diffuser basket to the housing.
  • a lamp is also known in which a transparent cover for a reflector housing has lateral openings through which in turn an air inlet is made possible.
  • the arrangement of the air inlet opening is here such that the attachment of the cover to the reflector housing is not affected.
  • the invention has for its object to avoid in a luminaire of the type specified heat buildup or reduce. Furthermore, in comparison to FR 2 267 518, an improved mounting of the diffuser basket is to be made possible.
  • the diffuser basket initially has at least one air inlet opening on at least one side of the lamp chamber, wherein the wall of the lamp chamber opposite the diffuser basket has at least one air outlet opening.
  • This embodiment allows a reduction of the heat build-up in the lamp chamber due to an automatically adjusting air flow, with which the heat in the lamp chamber is dissipated upwards. The airflow comes about through a chimney effect. It has been found to be surprising that the efficiency of the lamp located in the lamp chamber can be more improved if the air inlet opening is arranged laterally in the diffuser basket, instead - as one should assume - below. This finding is also contrary to the desire to arrange a uniform light emission disturbing elements, such as the air inlet opening, if possible not in the lower area, especially in the bottom of the diffuser basket.
  • the air inlet opening is designed and arranged according to the invention in connection with a perforated metal sheet or wire mesh so that the penetration of insects into the diffuser basket continues to be largely prevented.
  • the perforated plate or wire mesh is covered inside the basket bottom and at least at the lower part of the basket side walls with a diffuser layer, wherein the diffuser layer on at least one basket side wall to form the air inlet opening in the corresponding region has a distance from the wire mesh or perforated plate ,
  • the air inlet opening is arranged at the upper edge of the diffuser basket.
  • a luminaire which has a lamp chamber, at least one provided with the lamp chamber version for at least one tubular gas discharge lamp to be inserted therein, at least one laterally arranged by the lamp to be used reflector, a - viewed from the area to be illuminated - Arranged in front of the / each reflector diffuser disc from teillicht fashion understandem material and arranged between the lamp to be used and enclosed by the reflector and the diffuser disk space diffuser-intermediate wall.
  • the development consists in that the light emission and thus the infrared radiation (heat) should be increased as much as possible. So far, a part of the light is absorbed by the at least partially scattering reflector and the partial translucent material of the scattering partition and converted into heat or reduced infrared radiation.
  • the solution consists in the fact that the reflectance of the reflector is 100% or nearly 100% and / or the teillicht bea material of the intermediate wall is completely or almost completely free of inclusions.
  • the diffuser material used hitherto consists of PMMA (polymethylmethacrylate), in which small bodies (for example glass bodies) are distributed in order to obtain the diffuser effect, which have a higher melting point than the rest of the material.
  • PMMA polymethylmethacrylate
  • Such a diffuser material still has a white content of about 7%.
  • a diffuser material is to be used which is completely or almost completely free of scattering inclusions, this means that the diffuser material should not contain glass bodies or the like.
  • the drawing shows a luminaire according to the invention in vertical section.
  • the main parts of the designated in their entirety by 1 light fixture are a hood-shaped housing 2 with a top wall 2a and a downwardly extending from the edge of its peripheral wall 2b, which limits an underside housing opening 3.
  • the lamp 1 and the housing 2 z. B. have a round or rectangular shape, so that in each case two side walls 2c, 2d face each other.
  • As the light source at least one gas discharge lamp 5 is provided, which may be tubular, as is usual. In a straight extending lamp tube 5, the lamp 1 may have an elongated shape in the longitudinal direction of the tube.
  • For holding the gas discharge lamp 5 is one or two only hinted at clarified versions 6 provided at one or two opposite ends of the gas discharge lamp 5.
  • One or more gas discharge lamps 5 with associated sockets 6 can be provided.
  • three lamp tubes 5 are arranged horizontally next to each other.
  • the at least one gas discharge lamp 5 is located in the middle region of the housing 2 and in the middle or upper region of a diffuser housing 7, which in the embodiment consists of an upper diffuser hood 7a and a lower diffuser basket 7b. From the lower side edge of the basket 7b extends on each side of a diffuser disc 8 respectively to the opposite peripheral wall 2b, which may be a circular disc in a round light and can act in a square lamp to two side windows.
  • the discs extend 8 inclined towards its peripheral edge, preferably arcuately or arcuately curved, wherein they are at or in the vicinity the lower peripheral edge of the peripheral wall 2b can end.
  • a circular reflector 9 From the upper region of the hood 7a also extends a circular reflector 9 or extend two lateral reflectors 9 to the respective opposite peripheral wall 2b.
  • the reflectors 9 preferably also extend outwardly inclined or curved, in particular circular arc-shaped, in the embodiment also to the lower edge of the peripheral wall 2b, where they can end in the groove of an angle 11 at the outer edge of the diffuser discs 8.
  • the upwardly curved curvature of the reflectors 9 is stronger than the curvature of the diffuser disks 8.
  • a lighting space 12 with a vertical cross section flat triangular shape.
  • the housing 2 in the peripheral wall 2b or at least in the opposite side walls 2c each have a profile recess 10, which is preferably in the lower region and can overlap the free edges of the diffuser discs 8 or even the reflector or 9.
  • the peripheral wall 2b or the side walls 2c may be stabilized at their free edges by a protruding flange 10a, which may preferably have the shape of a groove.
  • the luminaire 1 is preferably of a flat construction, the width B visible in the drawing being in relation to its height H in a ratio of approximately 4: 1.
  • the diffuser housing 7 has a trapezoidal cross-sectional shape, so that the intermediate wall 7c of the upper hood 7a and the adjoining side walls 7d of the lower basket 7b extend downwardly divergent or obliquely.
  • the top wall 7e of the upper hood 7a preferably extends horizontally.
  • the reflectors 9 may be formed with a resting on the ceiling wall 7e central wall portion 9a by a continuous wall.
  • the reflector 9 and the reflectors 9 are each formed by a thin wall, preferably of metal, in particular sheet metal, wherein the area to be illuminated facing the reflection surface is preferably highly reflective, so that the reflection is 100% or nearly 100%.
  • the diffuser disks 8, the side wall sections 7c and the ceiling wall 7e may be formed by a common component, which may preferably be formed in one piece.
  • the basket 7b is connected by a connecting device, not shown, in particular a quick connection or latching device, so with the upper Hood 7a or the diffuser discs 8 connected, that the intermediate walls 7c are approximately aligned with the basket walls.
  • the basket 7b consists of a pot-shaped grid 13 or perforated plate, which is fine mesh and protects the lamp chamber 14 in the diffuser housing 7 before the entry of flies or the like.
  • the grid 13 thus has the shape of a box or shell open at the top, the bottom wall 13a of which preferably extends flat and whose side walls 13b preferably extend upward convergently and enclose an acute angle W.
  • the grid 13 is internally covered with a cover 15 of flat or sheet-like translucent material, preferably of plastic, which also takes the form of a top open shell with a flat bottom wall 15a and upwardly extending side walls 15b and like the grid alone or can be prefabricated with this.
  • a cover 15 of flat or sheet-like translucent material preferably of plastic, which also takes the form of a top open shell with a flat bottom wall 15a and upwardly extending side walls 15b and like the grid alone or can be prefabricated with this.
  • the diffuser housing 7 may be attached as a central body in the case of a round luminaire or as an elongated body in the case of a quadrangular luminaire on the ceiling wall 2a and / or on the end walls 2d opposite the front side.
  • At least one air inlet opening 21 is arranged, which is preferably in the side walls 15b of the cover 15, so that it is covered by the grid 13 and the lamp chamber 14 remains covered fly safely.
  • the air inlet openings 21 are arranged and formed mirror-symmetrically with respect to the vertical center plane of the luminaire 1 only in the mutually opposite side walls 15b.
  • the air inlet openings 21 are preferably located in the upper region of the side walls 15b, and in particular formed by the side walls 15b are dimensioned lower than the side walls 13b of the grid 13. This results in each case a light inlet opening 21 in the form of a slot, the can extend substantially over the entire length of the associated side wall 15b.
  • the side walls 15b are inclined inwardly with respect to the side walls 13b, wherein the inlet opening 21 also results as a gap between the upper edge of the side wall 15b and the grid 13.
  • This embodiment is particularly advantageous if the grid 13 is not perforated to increase its stability in the upper region of its side walls 13b.
  • one or more air outlet openings 22 are preferably arranged in the middle region or in the central longitudinal region.
  • the diffuser disks 8, the upper diffuser basket 7a and the cover 15 may be made of a diffuser material, e.g. B. from PMMA (polymethyl methacrylate), in which distributed to achieve the diffuser effect are small white body, which may have a higher melting point than the diffuser material and z. B. may be vitreous.
  • a diffuser material e.g. B. from PMMA (polymethyl methacrylate)
  • PMMA polymethyl methacrylate
  • the partition walls 7c extending between the diffuser disks 8 and the reflectors 9 have no or almost no white particles and thus no or almost no white component. They can be made of clear or translucent material. It is within the scope of the invention also possible to omit the side wall sections 7c, so that free passages between the lamp chamber 14 and the laterally adjacent lamp chambers 12 result, which can pass undisturbed by the at least one lamp 5 outgoing light.
  • the ceiling wall 7e can be omitted.
  • the ceiling wall 7e may consist of a diffuser material with white content or consist of the material of the intermediate walls 7c.
  • top wall 7e is covered on the top by a continuous reflector 9, it may also consist of clear transparent or translucent material or even missing.
  • the upper hood 7a may be a one-piece component.
  • a protective wall 23 may be attached, which protects the overlying area of the lamp 1 from heat, and which may also be formed as a reflector.
  • the light beams 24a emanating from the at least one lamp 5 are diffusely scattered as they pass through the lower basket 7b, as a result of which the light beams 24b emanating from the cover 15 are bared.
  • the light beams 24c passing through the intermediate walls 7c are reflected at the reflecting surfaces of the reflectors 9 and pass through the diffuser disks 8 as light beams 24d, diffused diffusely and also blended. This results in a photograph of the luminaire 1, which extends substantially over the entire transverse dimension of the luminaire 1 and illuminates the areas surrounding the diffuser basket 7b, possibly in a different color.
  • the lamp chamber 14 is heated by the at least one lamp, which is preferably a gas discharge tube and in particular, is a modern thin tube.
  • the heated air in the lamp chamber 14 can escape through the at least one light outlet opening 22 in the top wall 7e and / or in continuously formed reflectors 9 upwards, wherein also in the top wall 2a at least one hole can be arranged, which allows venting upwards.
  • the at least one lamp which is preferably a gas discharge tube and in particular, is a modern thin tube.
  • the heated air in the lamp chamber 14 can escape through the at least one light outlet opening 22 in the top wall 7e and / or in continuously formed reflectors 9 upwards, wherein also in the top wall 2a at least one hole can be arranged, which allows venting upwards.
  • color filter discs 25 preferably arranged on the side walls 7c on the inside or replacing them, colored light can be emitted in the area surrounding the diffuser basket 7b in the selected color of the color filter discs 25 or 25. It can be associated with the lamp 1 more color filter discs in different colors, which can be selectively selected and replaced. This applies both to the prefabrication of the lamp 1 and to the user of the lamp mounted in the room to be illuminated.
  • the luminaire according to the invention is suitable both as a recessed luminaire and as a pendant lamp for a ceiling and as a surface-mounted luminaire for a ceiling or wall.
  • a recessed luminaire it is suitable both for installation in an installation opening and for installation or for insertion between mounting rails.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • External Artificial Organs (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

The light has at least one holder for a gas discharge lamp(s) and a diffuser cage in front of the lamp if viewed from the region to be illuminated that bounds a lamp chamber relative to the region to be illuminated and at least partly consists of a material forming a partially transparent wall. The cage has a light inlet opening(s) on at least one side of the lamp chamber and the wall of the chamber opposite the cage has a light outlet opening(s). The light (1) has at least one holder (6) for at least one tubular gas discharge lamp (5) and a diffuser cage (7b) arranged in front of the lamp if viewed from the region to be illuminated that bounds a lamp chamber (14) relative to the region to be illuminated and at least partly consists of a material forming a partially transparent wall. The diffuser cage has at least one light inlet opening (21) on at least one side of the lamp chamber and the wall of the chamber opposite the cage has at least one light outlet opening (22).

Description

Die Erfindung betrifft eine Leuchte mit einer rohrförmigen Gasentladungslampe sowie einem - von dem zu beleuchtenden Bereich aus gesehen - vor der Lampe angeordneten Diffusor-Korb, der zumindest teilweise aus einem eine teillichtdurchlässige Wandung bildenden Material besteht.The invention relates to a luminaire with a tubular gas discharge lamp and a - viewed from the area to be illuminated - in front of the lamp arranged diffuser basket, which consists at least partially of a material forming a part-wall permeable wall.

Eine Leuchte dieser Art ist in der DE 100 06 410 A beschrieben. Bei dieser vorbekannten Bauweise ist eine die Gasentladungslampe aufnehmende Lampenkammer zu dem zu beleuchtenden Bereich durch einen Diffusor-Korb begrenzt. Es ist der Zweck des Diffusor-Korbes, zum einen die Lampenkammer zu schützen und zwar sowohl gegen Beschädigungen als auch gegen Verschmutzungen, und zum anderen das von der Lampe abgestrahlte Licht zu streuen und dadurch eine zumindest quer wirksame Entblendung herbeizuführen, so dass eine Blendung für Personen, die sich im zu beleuchtenden Bereich bzw. Raum bei normalem Blickwinkel aufhalten, verhindert oder wenigstens vermindert ist.A luminaire of this type is described in DE 100 06 410 A. In this prior art construction, a lamp chamber accommodating the gas discharge lamp is bounded by a diffuser basket to the area to be illuminated. It is the purpose of the diffuser basket, on the one hand to protect the lamp chamber both against damage and against contamination, and on the other to scatter the light emitted by the lamp light and thereby bring about an at least transversely effective glare, so that a glare for Persons who are in the area to be illuminated or space at normal viewing angle, prevented or at least reduced.

Der Optik- oder Diffusor-Korb kann aus einem äußeren Gitter bestehen, der innen mit einem durchscheinenden Material, z. B. aus Kunststoff, belegt ist. Letzteres hat die Aufgabe, zu verhindern, dass Insekten, insbesondere Fliegen, in den Diffusor-Korb eindringen können.The optics or diffuser basket may consist of an outer grid which is internally coated with a translucent material, e.g. B. plastic, is occupied. The latter has the task of preventing insects, especially flies, can penetrate into the diffuser basket.

Im Betrieb der Leuchte besteht die Gefahr eines Wärmestaus in der Lampenkammer. Der Wärmestau führt zwangsläufig zu einer Erhöhung der Betriebstemperatur der Lampen. Insbesondere bei den modernen dünnen Leuchtstoffröhren, die ohnehin schon viel Wärme erzeugen, führt das zu einer beträchtlichen Verminderung ihres Wirkungsgrades.During operation of the luminaire there is a risk of heat build-up in the lamp chamber. The accumulation of heat inevitably leads to an increase in the operating temperature of the lamps. Especially with the modern thin fluorescent tubes, which already generate a lot of heat anyway, this leads to a considerable reduction in their efficiency.

Um das Problem des Wärmestaus zu vermeiden, ist aus der FR 2 267 518 bekannt, eine Leuchte der gattungsgemäßen Art derart auszugestalten, dass die dem Diffusor-Korb gegenüberliegende Wandung eine Öffnung aufweist, welche eine Luftaustrittsöffnung bildet. Gleichzeitig ist der Diffusor-Korb derart ausgestaltet, dass im Verbindungsbereich zwischen Diffusor-Korb und Lampengehäuse Öffnungen gebildet werden, durch welche Luft einströmen kann. Auf diese Weise wird eine Luftzirkulation ermöglicht, welche die Bildung eines Wärmestaus verhindert. Problematisch ist allerdings, dass der Diffusor-Korb zum Bilden der Öffnungen für den Lufteintritt speziell ausgestaltet sein muss, wodurch wiederum die Zuverlässigkeit der Befestigung des Diffusor-Korbs an dem Gehäuse beeinträchtigt wird.In order to avoid the problem of heat accumulation, it is known from FR 2 267 518 to design a luminaire of the generic type such that the wall opposite the diffuser basket has an opening which forms an air outlet opening. At the same time, the diffuser basket is designed such that openings are formed in the connecting region between the diffuser basket and the lamp housing, through which air can flow. In this way, an air circulation is enabled, which prevents the formation of a heat accumulation. The problem is, however, that the diffuser basket for forming the openings for the Air inlet must be specially designed, which in turn affects the reliability of attachment of the diffuser basket to the housing.

Aus der FR 45 475 ist ferner eine Leuchte bekannt, bei der eine transparente Abdeckung für ein Reflektorgehäuse seitliche Öffnungen aufweist, durch welche wiederum ein Lufteintritt ermöglicht wird. Die Anordnung der Lufteintrittsöffnung ist hier derart, dass die Befestigung der Abdeckung an dem Reflektorgehäuse nicht beeinträchtigt wird.From FR 45 475 a lamp is also known in which a transparent cover for a reflector housing has lateral openings through which in turn an air inlet is made possible. The arrangement of the air inlet opening is here such that the attachment of the cover to the reflector housing is not affected.

Der Erfindung liegt die Aufgabe zugrunde, bei einer Leuchte der eingangs angegebenen Art einen Wärmestau zu vermeiden oder zu vermindern. Ferner soll im Vergleich zur FR 2 267 518 eine verbesserte Halterung des Diffusor-Korbs ermöglicht werden.The invention has for its object to avoid in a luminaire of the type specified heat buildup or reduce. Furthermore, in comparison to FR 2 267 518, an improved mounting of the diffuser basket is to be made possible.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben.This object is solved by the features of claim 1. Advantageous developments of the invention are described in the subclaims.

Bei der erfindungsgemäßen Leuchte weist der Diffusor-Korb zunächst an mindestens einer Seite der Lampenkammer mindestens eine Lufteintrittsöffnung auf, wobei die dem Diffusor-Korb gegenüberliegende Wandung der Lampenkammer mindestens eine Luftaustrittsöffnung aufweist. Diese Ausgestaltung ermöglicht eine Verringerung des Wärmestaus in der Lampenkammer aufgrund eines sich selbsttätig einstellenden Luftstroms, mit dem die in der Lampenkammer befindliche Wärme nach oben abgeführt wird. Der Luftstrom kommt durch einen Kamineffekt zustande. Dabei hat es sich als überraschend herausgestellt, dass der Wirkungsgrad der in der Lampenkammer befindlichen Lampe stärker verbessert werden kann, wenn die Lufteintrittsöffnung seitlich im Diffusor-Korb angeordnet ist, statt - wie man annehmen sollte - unten. Diese Erkenntnis kommt außerdem dem Bestreben entgegen, eine gleichmäßige Lichtabstrahlung störende Elemente, wie die Lufteintrittsöffnung, möglichst nicht im unteren Bereich, insbesondere im Boden des Diffusor-Korbes, anordnen zu müssen.In the luminaire according to the invention, the diffuser basket initially has at least one air inlet opening on at least one side of the lamp chamber, wherein the wall of the lamp chamber opposite the diffuser basket has at least one air outlet opening. This embodiment allows a reduction of the heat build-up in the lamp chamber due to an automatically adjusting air flow, with which the heat in the lamp chamber is dissipated upwards. The airflow comes about through a chimney effect. It has been found to be surprising that the efficiency of the lamp located in the lamp chamber can be more improved if the air inlet opening is arranged laterally in the diffuser basket, instead - as one should assume - below. This finding is also contrary to the desire to arrange a uniform light emission disturbing elements, such as the air inlet opening, if possible not in the lower area, especially in the bottom of the diffuser basket.

Die Lufteintrittsöffnung wird in Verbindung mit einem Lochblech oder Drahtgitter erfindungsgemäß so gestaltet und angeordnet, dass auch weiterhin das Eindringen von Insekten in den Diffusor-Korb weitgehend unterbunden wird. Hierzu ist das Lochblech bzw. Drahtgitter innen am Korbboden und mindestens am unteren Teil der Korbseitenwände mit einer Diffusor-Schicht belegt ist, wobei die Diffusor-Schicht an mindestens einer Korbseitenwand zur Bildung der Lufteintrittsöffnung in dem entsprechenden Bereich einen Abstand zu dem Drahtgitter oder Lochblech hat.The air inlet opening is designed and arranged according to the invention in connection with a perforated metal sheet or wire mesh so that the penetration of insects into the diffuser basket continues to be largely prevented. For this purpose, the perforated plate or wire mesh is covered inside the basket bottom and at least at the lower part of the basket side walls with a diffuser layer, wherein the diffuser layer on at least one basket side wall to form the air inlet opening in the corresponding region has a distance from the wire mesh or perforated plate ,

Vorzugsweise ist die Lufteintrittsöffnung am oberen Rand des Diffusor-Korbes angeordnet.Preferably, the air inlet opening is arranged at the upper edge of the diffuser basket.

Gemäß einer Weiterbildung der Erfindung wird eine Leuchte vorgeschlagen, welche eine Lampenkammer aufweist, mindestens eine mit der Lampenkammer vorgesehene Fassung für mindestens eine in diese einzusetzende rohrförmige Gasentladungslampe, mindestens einen seitlich von der einzusetzenden Lampe angeordneten Reflektor, eine - von dem zu beleuchtenden Bereich aus gesehen - vor dem/jedem Reflektor angeordnete Diffusor-Scheibe aus teillichtdurchlässigem Material sowie eine zwischen der einzusetzenden Lampe und dem von dem Reflektor und der Diffusor-Scheibe eingeschlossenen Raum angeordnete Diffusor-Zwischenwand. Die Weiterbildung besteht darin, dass die Lichtabstrahlung und damit auch die Infrarotabstrahlung (Wärme) soweit wie möglich erhöht werden soll. Bisher wird durch den zumindest teilweise streuenden Reflektor und das teillichtdurchlässige Material der streuenden Zwischenwand ein Teil des Lichtes absorbiert und in Wärme umgewandelt bzw. eine Infrarotabstrahlung reduziert.According to one embodiment of the invention, a luminaire is proposed which has a lamp chamber, at least one provided with the lamp chamber version for at least one tubular gas discharge lamp to be inserted therein, at least one laterally arranged by the lamp to be used reflector, a - viewed from the area to be illuminated - Arranged in front of the / each reflector diffuser disc from teillichtdurchlässigem material and arranged between the lamp to be used and enclosed by the reflector and the diffuser disk space diffuser-intermediate wall. The development consists in that the light emission and thus the infrared radiation (heat) should be increased as much as possible. So far, a part of the light is absorbed by the at least partially scattering reflector and the partial translucent material of the scattering partition and converted into heat or reduced infrared radiation.

Die Lösung besteht nun darin, dass der Reflexionsgrad des Reflektors 100 % oder nahezu 100 % ist und/oder das teillichtdurchlässige Material der Zwischenwand vollständig oder nahezu vollständig frei von Einlagerungen ist.The solution consists in the fact that the reflectance of the reflector is 100% or nearly 100% and / or the teillichtdurchlässige material of the intermediate wall is completely or almost completely free of inclusions.

Das bisher verwendete Diffusor-Material besteht aus PMMA (Polymethylmethaacrylat), in dem sich zur Erzielung der Diffusor-Wirkung verteilt kleine Körper (beispielsweise Glaskörper) befinden, die einen höheren Schmelzpunkt haben als das übrige Material. Ein solches Diffusor-Material hat noch einen Weißanteil von ca. 7 %.The diffuser material used hitherto consists of PMMA (polymethylmethacrylate), in which small bodies (for example glass bodies) are distributed in order to obtain the diffuser effect, which have a higher melting point than the rest of the material. Such a diffuser material still has a white content of about 7%.

Wenn nun entsprechend der erfindungsgemäßen Erweiterung ein Diffusor-Material verwendet werden soll, das vollständig oder nahezu vollständig frei von streuenden Einlagerungen ist, so bedeutet das, dass das Diffusor-Material keine Glaskörper oder dergleichen enthalten soll.If, according to the expansion according to the invention, a diffuser material is to be used which is completely or almost completely free of scattering inclusions, this means that the diffuser material should not contain glass bodies or the like.

Nachfolgend werden vorteilhafte Ausgestaltungen der Erfindung anhand von bevorzugten Ausführungsbeispielen und einer Zeichnung näher erläutert.Below, advantageous embodiments of the invention will be explained in more detail with reference to preferred embodiments and a drawing.

Die Zeichnung zeigt eine erfindungsgemäße Leuchte im vertikalen Schnitt. Die Hauptteile der in ihrer Gesamtheit mit 1 bezeichneten Leuchte sind ein haubenförmiges Gehäuse 2 mit einer Deckenwand 2a und einer sich von deren Rand nach unten erstreckenden Umfangswand 2b, die eine unterseitige Gehäuseöffnung 3 begrenzt. Längs der am Ausführungsbeispiel vertikalen Mittelachse 4 der Leuchte 1 bzw. des Gehäuses 2 gesehen, kann die Leuchte 1 bzw. das Gehäuse 2 z. B. eine runde oder rechteckige Form aufweisen, so dass sich jeweils zwei Seitenwände 2c, 2d einander gegenüberliegen. Als Lichtquelle ist wenigstens eine Gasentladungslampe 5 vorgesehen, die röhrenförmig ausgebildet sein kann, wie es üblich ist. Bei einer sich gerade erstreckenden Lampenröhre 5 kann die Leuchte 1 eine in der Längsrichtung der Röhre längliche Form aufweisen. Zur Halterung der Gasentladungslampe 5 ist an einem oder sind an zwei gegenüberliegenden Enden der Gasentladungslampe 5 eine bzw. zwei nur andeutungsweise verdeutlichte Fassungen 6 vorgesehen.The drawing shows a luminaire according to the invention in vertical section. The main parts of the designated in their entirety by 1 light fixture are a hood-shaped housing 2 with a top wall 2a and a downwardly extending from the edge of its peripheral wall 2b, which limits an underside housing opening 3. Seen along the vertical axis of the embodiment 4 of the lamp 1 and the housing 2, the lamp 1 and the housing 2 z. B. have a round or rectangular shape, so that in each case two side walls 2c, 2d face each other. As the light source, at least one gas discharge lamp 5 is provided, which may be tubular, as is usual. In a straight extending lamp tube 5, the lamp 1 may have an elongated shape in the longitudinal direction of the tube. For holding the gas discharge lamp 5 is one or two only hinted at clarified versions 6 provided at one or two opposite ends of the gas discharge lamp 5.

Es können ein oder mehrere Gasentladungslampen 5 mit zugehörigen Fassungen 6 vorgesehen sein. Beim Ausführungsbeispiel sind drei Lampenröhren 5 horizontal nebeneinander angeordnet.One or more gas discharge lamps 5 with associated sockets 6 can be provided. In the embodiment, three lamp tubes 5 are arranged horizontally next to each other.

Die wenigstens eine Gasentladungslampe 5 befindet sich im mittleren Bereich des Gehäuses 2 und im mittleren oder oberen Bereich eines Diffusor-Gehäuses 7, das beim Ausführungsbeispiel aus einer oberen Diffusor-Haube 7a und einem unteren Diffusor-Korb 7b besteht. Vom unteren Seitenrand des Korbes 7b erstreckt sich auf jeder Seite eine Diffusor-Scheibe 8 jeweils zur gegenüberliegenden Umfangswand 2b, wobei es sich bei einer runden Leuchte um eine Ringscheibe handeln kann und bei einer viereckigen Leuchte um zwei seitliche Scheiben handeln kann. Beim Ausführungsbeispiel erstrecken sich die Scheiben 8 zu ihrem Umfangsrand hin geneigt, vorzugsweise bogen- oder kreisbogenförmig gekrümmt, wobei sie am oder in der Nähe des unteren Umfangsrandes der Umfangswand 2b enden können. Vom oberen Bereich der Haube 7a erstreckt sich ebenfalls ein kreisförmiger Reflektor 9 oder erstrecken sich zwei seitliche Reflektoren 9 bis zu der jeweils gegenüberliegenden Umfangswand 2b. Die Reflektoren 9 erstrecken sich vorzugsweise ebenfalls nach außen geneigt oder bogenförmig, insbesondere kreisbogenförmig gekrümmt, beim Ausführungsbeispiel ebenfalls zum unteren Rand der Umfangswand 2b, wobei sie in der Hohlkehle eines Winkels 11 am Außenrand der Diffusor-Scheiben 8 enden können. Die nach oben gewölbte Krümmung der Reflektoren 9 ist stärker als die Krümmung der Diffusor-Scheiben 8. Zwischen den Reflektoren 9 und den zugehörigen Diffusor-Scheiben 8 sowie der sich dazwischen erstreckenden Zwischenwand 7c der Haube 7a ist jeweils ein Leuchtenraum 12 mit einer im vertikalen Querschnitt flachen dreieckförmigen Form.The at least one gas discharge lamp 5 is located in the middle region of the housing 2 and in the middle or upper region of a diffuser housing 7, which in the embodiment consists of an upper diffuser hood 7a and a lower diffuser basket 7b. From the lower side edge of the basket 7b extends on each side of a diffuser disc 8 respectively to the opposite peripheral wall 2b, which may be a circular disc in a round light and can act in a square lamp to two side windows. In the embodiment, the discs extend 8 inclined towards its peripheral edge, preferably arcuately or arcuately curved, wherein they are at or in the vicinity the lower peripheral edge of the peripheral wall 2b can end. From the upper region of the hood 7a also extends a circular reflector 9 or extend two lateral reflectors 9 to the respective opposite peripheral wall 2b. The reflectors 9 preferably also extend outwardly inclined or curved, in particular circular arc-shaped, in the embodiment also to the lower edge of the peripheral wall 2b, where they can end in the groove of an angle 11 at the outer edge of the diffuser discs 8. The upwardly curved curvature of the reflectors 9 is stronger than the curvature of the diffuser disks 8. Between the reflectors 9 and the associated diffuser disks 8 and the intermediate wall 7c of the hood 7a extending therebetween is in each case a lighting space 12 with a vertical cross section flat triangular shape.

Beim Ausführungsbeispiel weist das Gehäuse 2 in der Umfangswand 2b oder wenigstens in den einander gegenüberliegenden Seitenwänden 2c jeweils eine Profileinziehung 10 auf, die sich vorzugsweise im unteren Bereich befindet und die freien Ränder der Diffusor-Scheiben 8 oder auch des oder der Reflektoren 9 übergreifen kann. Außerdem kann die Umfangswand 2b oder können die Seitenwände 2c an ihren freien Rändern durch einen abstehenden Flansch 10a stabilisiert sein, der vorzugsweise die Form einer Rinne aufweisen kann.In the exemplary embodiment, the housing 2 in the peripheral wall 2b or at least in the opposite side walls 2c each have a profile recess 10, which is preferably in the lower region and can overlap the free edges of the diffuser discs 8 or even the reflector or 9. In addition, the peripheral wall 2b or the side walls 2c may be stabilized at their free edges by a protruding flange 10a, which may preferably have the shape of a groove.

Die Leuchte 1 ist vorzugsweise von flacher Bauweise, wobei die in der Zeichnung sichtbare Breite B bezüglich ihrer Höhe H in einem Verhältnis von etwa 4 : 1 steht.The luminaire 1 is preferably of a flat construction, the width B visible in the drawing being in relation to its height H in a ratio of approximately 4: 1.

Beim Ausführungsbeispiel weist das Diffusor-Gehäuse 7 eine trapezförmige Querschnittsform auf, so dass die Zwischenwand 7c der oberen Haube 7a und die sich daran anschließenden Seitenwände 7d des unteren Korbes 7b nach unten divergent bzw. schräg erstrecken. Die Deckenwand 7e der oberen Haube 7a erstreckt sich vorzugsweise horizontal. Wie die Zeichnung zeigt, können die Reflektoren 9 mit einem auf der Deckenwand 7e aufliegenden mittleren Wandabschnitt 9a durch eine durchgehende Wand gebildet sein. Der Reflektor 9 bzw. die Reflektoren 9 sind jeweils durch eine dünne Wand, vorzugsweise aus Metall, insbesondere Blech, gebildet, wobei die dem zu beleuchtenden Bereich zugewandte Reflexionsfläche vorzugsweise hochgradig reflektierend ist, so dass die Reflexion 100 % oder nahezu 100 % beträgt.In the embodiment, the diffuser housing 7 has a trapezoidal cross-sectional shape, so that the intermediate wall 7c of the upper hood 7a and the adjoining side walls 7d of the lower basket 7b extend downwardly divergent or obliquely. The top wall 7e of the upper hood 7a preferably extends horizontally. As the drawing shows, the reflectors 9 may be formed with a resting on the ceiling wall 7e central wall portion 9a by a continuous wall. The reflector 9 and the reflectors 9 are each formed by a thin wall, preferably of metal, in particular sheet metal, wherein the area to be illuminated facing the reflection surface is preferably highly reflective, so that the reflection is 100% or nearly 100%.

Die Diffusor-Scheiben 8, die Seitenwandabschnitte 7c und die Deckenwand 7e können durch ein gemeinsames Bauteil gebildet sein, das vorzugsweise einteilig ausgebildet sein kann. Der Korb 7b ist durch eine nicht dargestellte Verbindungsvorrichtung, insbesondere eine Schnellverbindung oder Verrastungsvorrichtung, so mit der oberen Haube 7a oder den Diffusor-Scheiben 8 verbunden, dass die Zwischenwände 7c mit den Korbwänden etwa fluchten.The diffuser disks 8, the side wall sections 7c and the ceiling wall 7e may be formed by a common component, which may preferably be formed in one piece. The basket 7b is connected by a connecting device, not shown, in particular a quick connection or latching device, so with the upper Hood 7a or the diffuser discs 8 connected, that the intermediate walls 7c are approximately aligned with the basket walls.

Der Korb 7b besteht aus einem topfförmigen Gitter 13 oder Lochblech, das feinmaschig ist und die Lampenkammer 14 im Diffusor-Gehäuse 7 vor dem Eintritt von Fliegen oder dergleichen schützt. Das Gitter 13 weist somit die Form eines oberseitig offenen Kastens oder Schale auf, dessen Bodenwand 13a sich vorzugsweise eben erstreckt und dessen Seitenwände 13b sich nach oben vorzugsweise konvergent erstrecken und einen spitzen Winkel W einschließen.The basket 7b consists of a pot-shaped grid 13 or perforated plate, which is fine mesh and protects the lamp chamber 14 in the diffuser housing 7 before the entry of flies or the like. The grid 13 thus has the shape of a box or shell open at the top, the bottom wall 13a of which preferably extends flat and whose side walls 13b preferably extend upward convergently and enclose an acute angle W.

Das Gitter 13 ist innen mit einer Abdeckung 15 aus flachem bzw. folienförmigem durchscheinenden Material, vorzugsweise aus Kunststoff, besetzt, das ebenfalls die Form einer oberseitig offenen Schale mit einer ebenen Bodenwand 15a und sich nach oben erstreckenden Seitenwänden 15b aufweist und wie das Gitter allein oder mit diesem vorgefertigt sein kann.The grid 13 is internally covered with a cover 15 of flat or sheet-like translucent material, preferably of plastic, which also takes the form of a top open shell with a flat bottom wall 15a and upwardly extending side walls 15b and like the grid alone or can be prefabricated with this.

Das Diffusor-Gehäuse 7 kann bei einer runden Leuchte als zentraler Körper oder bei einer viereckigen Leuchte als länglicher Körper an der Deckenwand 2a und/oder an den stirnseitig gegenüberliegenden Seitenwänden 2d befestigt sein.The diffuser housing 7 may be attached as a central body in the case of a round luminaire or as an elongated body in the case of a quadrangular luminaire on the ceiling wall 2a and / or on the end walls 2d opposite the front side.

In wenigstens einer Seitenwand des Diffusor-Korbes 7b ist wenigstens eine Lufteintrittsöffnung 21 angeordnet, die sich vorzugsweise in den Seitenwänden 15b der Abdeckung 15 befindet, so dass sie durch das Gitter 13 abgedeckt ist und die Lampenkammer 14 fliegensicher abgedeckt bleibt. Beim Ausführungsbeispiel sind die Lufteintrittsöffnungen 21 nur in den einander gegenüberliegenden Seitenwänden 15b spiegelsymmetrisch bezüglich der vertikalen Mittelebene der Leuchte 1 angeordnet und ausgebildet. Die Lufteintrittsöffnungen 21 befinden sich vorzugsweise im oberen Bereich der Seitenwände 15b, und sie sind insbesondere dadurch gebildet, dass die Seitenwände 15b niedriger bemessen sind, als die Seitenwände 13b des Gitters 13. Hierdurch ergibt sich jeweils eine Lichteintrittsöffnung 21 in der Form eines Schlitzes, der sich im Wesentlichen über die gesamte Länge der zugehörigen Seitenwand 15b erstrecken kann. Beim Ausführungsbeispiel sind die Seitenwände 15b bezüglich den Seitenwänden 13b nach innen geneigt angeordnet, wobei sich die Eintrittsöffnung 21 auch als Spalt zwischen dem oberen Rand der Seitenwand 15b und dem Gitter 13 ergibt. Diese Ausgestaltung ist insbesondere dann von Vorteil, wenn das Gitter 13 zur Vergrößerung seiner Stabilität im oberen Bereich seiner Seitenwände 13b nicht gelocht ist.In at least one side wall of the diffuser basket 7b at least one air inlet opening 21 is arranged, which is preferably in the side walls 15b of the cover 15, so that it is covered by the grid 13 and the lamp chamber 14 remains covered fly safely. In the exemplary embodiment, the air inlet openings 21 are arranged and formed mirror-symmetrically with respect to the vertical center plane of the luminaire 1 only in the mutually opposite side walls 15b. The air inlet openings 21 are preferably located in the upper region of the side walls 15b, and in particular formed by the side walls 15b are dimensioned lower than the side walls 13b of the grid 13. This results in each case a light inlet opening 21 in the form of a slot, the can extend substantially over the entire length of the associated side wall 15b. In the embodiment, the side walls 15b are inclined inwardly with respect to the side walls 13b, wherein the inlet opening 21 also results as a gap between the upper edge of the side wall 15b and the grid 13. This embodiment is particularly advantageous if the grid 13 is not perforated to increase its stability in the upper region of its side walls 13b.

In der Deckenwand 7e des Diffusor-Gehäuses 7 oder des durchgehenden Reflektors 9 sind eine oder mehrere Luftaustrittsöffnungen 22 vorzugsweise im mittleren Bereich oder im mittleren Längsbereich angeordnet.In the top wall 7e of the diffuser housing 7 or the continuous reflector 9, one or more air outlet openings 22 are preferably arranged in the middle region or in the central longitudinal region.

Die Diffusor-Scheiben 8, der obere Diffusor-Korb 7a und die Abdeckung 15 können aus einem Diffusor-Material bestehen, z. B. aus PMMA (Polymethylmethaacrylat), in dem sich zur Erzielung der Diffusor-Wirkung verteilt kleine weiße Körper befinden, die einen höheren Schmelzpunkt haben können als das Diffusor-Material und z. B. Glaskörper sein können.The diffuser disks 8, the upper diffuser basket 7a and the cover 15 may be made of a diffuser material, e.g. B. from PMMA (polymethyl methacrylate), in which distributed to achieve the diffuser effect are small white body, which may have a higher melting point than the diffuser material and z. B. may be vitreous.

Die sich zwischen den Diffusor-Scheiben 8 und den Reflektoren 9 erstreckenden Zwischenwände 7c weisen keine oder nahezu keine weißen Partikel und somit keinen oder nahezu keinen Weißanteil auf. Sie können aus klarem oder durchscheinendem Material bestehen. Es ist im Rahmen der Erfindung auch möglich, die Seitenwandabschnitte 7c wegzulassen, so dass sich freie Durchgänge zwischen der Lampenkammer 14 und den seitlich benachbarten Leuchtenkammern 12 ergeben, die das von der wenigstens einen Lampe 5 ausgehende Licht unbeeinträchtigt passieren kann. Insbesondere dann, wenn ein Reflektor 9 vorgesehen ist, der sich über dem Korb 7b durchgehend erstreckt, kann auch die Deckenwand 7e entfallen. Die Deckenwand 7e kann aus einem Diffusor-Material mit Weißanteil bestehen oder aus dem Material der Zwischenwände 7c bestehen. Wenn die Deckenwand 7e oberseitig durch einen durchgehenden Reflektor 9 abgedeckt ist, kann sie auch aus klar durchsichtigem oder durchscheinendem Material bestehen oder auch fehlen. Im Rahmen der Erfindung kann die obere Haube 7a ein einteiliges Bauteil sein. Innenseitig an der Deckenwand 7e kann eine Schutzwand 23 befestigt sein, das den darüber befindlichen Bereich der Leuchte 1 vor Wärme schützt, und das auch als Reflektor ausgebildet sein kann.The partition walls 7c extending between the diffuser disks 8 and the reflectors 9 have no or almost no white particles and thus no or almost no white component. They can be made of clear or translucent material. It is within the scope of the invention also possible to omit the side wall sections 7c, so that free passages between the lamp chamber 14 and the laterally adjacent lamp chambers 12 result, which can pass undisturbed by the at least one lamp 5 outgoing light. In particular, when a reflector 9 is provided which extends continuously over the basket 7b, the ceiling wall 7e can be omitted. The ceiling wall 7e may consist of a diffuser material with white content or consist of the material of the intermediate walls 7c. If the top wall 7e is covered on the top by a continuous reflector 9, it may also consist of clear transparent or translucent material or even missing. In the context of the invention, the upper hood 7a may be a one-piece component. On the inside of the ceiling wall 7e, a protective wall 23 may be attached, which protects the overlying area of the lamp 1 from heat, and which may also be formed as a reflector.

Im Funktionsbetrieb der Leuchte 1 werden die von der wenigstens einen Lampe 5 ausgehenden Lichtstrahlen 24a bei ihrem Durchtritt durch den unteren Korb 7b diffus gestreut, wodurch die von der Abdeckung 15 ausgehenden Lichtstrahlen 24b entblendet sind. Die durch die Zwischenwände 7c hindurchtretenden Lichtstrahlen 24c werden an den Reflektionsflächen der Reflektoren 9 reflektiert und treten als Lichtstrahlen 24d durch die Diffusor-Scheiben 8 hindurch, wobei sie diffus gestreut und ebenfalls entblendet werden. Hierbei ergibt sich ein Lichtbild der Leuchte 1, das sich im Wesentlichen über die gesamte Querabmessung der Leuchte 1 erstreckt und die den Diffusor-Korb 7b umgebenden Bereiche gegebenenfalls in anderer Farbe erhellt.In the functional operation of the luminaire 1, the light beams 24a emanating from the at least one lamp 5 are diffusely scattered as they pass through the lower basket 7b, as a result of which the light beams 24b emanating from the cover 15 are bared. The light beams 24c passing through the intermediate walls 7c are reflected at the reflecting surfaces of the reflectors 9 and pass through the diffuser disks 8 as light beams 24d, diffused diffusely and also blended. This results in a photograph of the luminaire 1, which extends substantially over the entire transverse dimension of the luminaire 1 and illuminates the areas surrounding the diffuser basket 7b, possibly in a different color.

Im Funktionsbetrieb wird die Lampenkammer 14 durch von der wenigstens einen Lampe erwärmt, bei der es sich vorzugsweise um eine Gasentladungsröhre und insbesondere um eine moderne dünne Röhre handelt. Die in der Lampenkammer 14 erwärmte Luft kann durch die wenigstens eine Lichtaustrittsöffnung 22 in der Deckenwand 7e und/oder in durchgehend ausgebildeten Reflektoren 9 nach oben entweichen, wobei auch in der Deckenwand 2a wenigstens ein Loch angeordnet sein kann, das eine Entlüftung nach oben ermöglicht. Durch diesen aufgrund des natürlichen Auftriebs selbsttätig stattfindenden Luftstrom wird durch die wenigstens eine Lufteintrittöffnung 21 Luft aus der Umgebung eingesaugt, wodurch nicht nur ein Luftaustausch in der Lampenkammer 14 stattfindet, sondern auch eine wirksame Kühlung auch der wenigstens einen Gasentladungslampe 5, wodurch deren Leistungsfähigkeit vergrößert wird.In functional operation, the lamp chamber 14 is heated by the at least one lamp, which is preferably a gas discharge tube and in particular, is a modern thin tube. The heated air in the lamp chamber 14 can escape through the at least one light outlet opening 22 in the top wall 7e and / or in continuously formed reflectors 9 upwards, wherein also in the top wall 2a at least one hole can be arranged, which allows venting upwards. By this due to the natural buoyancy automatically occurring air flow is sucked through the at least one air inlet opening 21 air from the environment, whereby not only an exchange of air in the lamp chamber 14 takes place, but also effective cooling of the at least one gas discharge lamp 5, whereby their performance is increased ,

Durch vorzugsweise innenseitig an den Seitenwänden 7c angeordnete oder diese ersetzende Farbfilterscheiben 25 können den Diffusor-Korb 7b umgebenden Bereich in der ausgewählten Farbe des bzw. der Farbfilterscheiben 25 gefärbtes Licht abgestrahlt werden. Es können der Leuchte 1 mehrere Farbfilterscheiben in unterschiedlichen Farben zugeordnet sein, die wahlweise ausgewählt und ausgetauscht werden können. Dies gilt sowohl für die Vorfertigung der Leuchte 1 als auch für den Benutzer der im zu beleuchtenden Raum montierten Leuchte.Through color filter discs 25 preferably arranged on the side walls 7c on the inside or replacing them, colored light can be emitted in the area surrounding the diffuser basket 7b in the selected color of the color filter discs 25 or 25. It can be associated with the lamp 1 more color filter discs in different colors, which can be selectively selected and replaced. This applies both to the prefabrication of the lamp 1 and to the user of the lamp mounted in the room to be illuminated.

Die erfindungsgemäße Leuchte eignet sich sowohl als Einbauleuchte als auch als Pendelleuchte für eine Decke und auch als Anbauleuchte für eine Decke oder Wand. Im Falle einer Einbauleuchte eignet sie sich sowohl für den Einbau in eine Einbauöffnung als auch für einen Einbau oder für eine Einlegung zwischen Tragschienen.The luminaire according to the invention is suitable both as a recessed luminaire and as a pendant lamp for a ceiling and as a surface-mounted luminaire for a ceiling or wall. In the case of a recessed luminaire, it is suitable both for installation in an installation opening and for installation or for insertion between mounting rails.

Claims (3)

  1. Luminaire (1) having at least one fitting (6) for at least one tube-like gas discharge lamp (5) to be put in place in the fitting, and having a diffuser basket (7b) arranged before - seen from the region to be illuminated - the lamp (5) to be put in place, which divides off, in the direction towards the region to be illuminated, a lamp chamber (14) bounding the lamp (5) to be put in place, and is at least in part of a material forming a partially light-permeable wall,
    wherein the wall of the lamp chamber (15) lying opposite to the diffuser basket (7b) has at least one air exit opening (22),
    characterized in that,
    the diffuser basket (7b) has at least on one side of the lamp chamber (14) at least one air entry opening (21),
    in that the diffuser basket (7b) is of wire mesh (13) or perforated sheet, which internally at the basket base and at least at the lower part of the basket side walls (13b) is covered with a diffuser layer (15a) and
    in that the diffuser layer (15a) has, at at least one basket side wall (7d), a spacing to the wire mesh (13) or perforated sheet for the formation of the air entry opening (21) in the corresponding region.
  2. Luminaire according to claim 1,
    characterized in that,
    the air entry opening (21) is arranged on the upper edge of the diffuser basket (7b).
  3. Luminaire according to claim 1 or 2, having
    at least one reflector (9) arranged to the side of the lamp (5) to be put in place, a diffuser plate (8) arranged - seen from the region to be illuminated - before the/each reflector (9), the diffuser plate being of partially light-permeable material, a diffuser intermediate wall (7c) arranged between the lamp (5) to be put in place and the space (12) enclosed by the reflector (9) and the diffuser plate (8),
    characterized in that,
    the degree of reflection of the reflector (9) is 100% or virtually 100% and/or the partially light-permeable material of the intermediate wall (7c) is completely or virtually completely free of scattering inclusions.
EP03005321A 2002-04-12 2003-03-11 Luminaire with a diffuser Expired - Lifetime EP1359371B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10216249A DE10216249A1 (en) 2002-04-12 2002-04-12 Light has diffuser cage with at least one light inlet opening on at least one side of lamp chamber and wall of chamber opposite cage has at least one light outlet opening
DE10216249 2002-04-12

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EP1359371A1 EP1359371A1 (en) 2003-11-05
EP1359371B1 true EP1359371B1 (en) 2006-05-31

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EP03005321A Expired - Lifetime EP1359371B1 (en) 2002-04-12 2003-03-11 Luminaire with a diffuser

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Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
EP1496308B1 (en) 2003-07-10 2011-08-24 Siteco Beleuchtungstechnik GmbH Interior Light with a refractive element
DE102004017686A1 (en) 2004-04-10 2005-11-03 Trilux-Lenze Gmbh + Co Kg Ergonomic ceiling light
DE102006047689B4 (en) * 2006-04-12 2017-01-26 Siteco Beleuchtungstechnik Gmbh Luminaire and trunking system with transparent lampshade
DE202006016859U1 (en) * 2006-11-03 2008-03-06 Zumtobel Lighting Gmbh mood light
DE202007013177U1 (en) * 2007-09-20 2007-12-20 Ridi Leuchten Gmbh lamp
DE102009007794B4 (en) * 2009-02-06 2012-03-15 Osram Ag diffuser
DE102010041478A1 (en) * 2010-09-27 2012-03-29 Zumtobel Lighting Gmbh Arrangement for directed light emission
CN102588756B (en) * 2011-01-13 2014-05-07 光宝电子(广州)有限公司 Lighting fixture

Citations (1)

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Publication number Priority date Publication date Assignee Title
FR45475E (en) * 1934-11-21 1935-09-12 Metaladher Improvements to reflectors

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DE10006410A1 (en) * 2000-02-14 2001-08-16 Zumtobel Staff Gmbh Recessed ceiling light fitting has concave reflector and light diffuser cooperating to provide divergent light chambers on either side of tubular gas discharge lamp
DE2417678C3 (en) * 1974-04-11 1978-12-21 Trilux - Lenze Gmbh + Co Kg, 5760 Arnsberg Exhaust light
GB2215447B (en) * 1987-11-06 1991-05-29 Designed Architectural Lightin Lighting installation
ATE123335T1 (en) * 1991-10-24 1995-06-15 Zumtobel Licht REFLECTOR FOR A LAMP.
DE19647487A1 (en) * 1996-11-16 1998-05-20 Semperlux Gmbh Inner lighting with at least one light source arranged in reflector

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FR45475E (en) * 1934-11-21 1935-09-12 Metaladher Improvements to reflectors

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DE10216249A1 (en) 2003-10-23
ATE328240T1 (en) 2006-06-15
EP1359371A1 (en) 2003-11-05
DE50303542D1 (en) 2006-07-06

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