DE102009049301A1 - lamp - Google Patents

lamp

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Publication number
DE102009049301A1
DE102009049301A1 DE200910049301 DE102009049301A DE102009049301A1 DE 102009049301 A1 DE102009049301 A1 DE 102009049301A1 DE 200910049301 DE200910049301 DE 200910049301 DE 102009049301 A DE102009049301 A DE 102009049301A DE 102009049301 A1 DE102009049301 A1 DE 102009049301A1
Authority
DE
Germany
Prior art keywords
reflector
characterized
diffuser element
according
light
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.)
Ceased
Application number
DE200910049301
Other languages
German (de)
Inventor
Matthias Dipl.-Phys. Dr. rer. nat. Bremerich
Markus Dr.-Ing. Görres
Leonhard Klose
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.)
ERCO GmbH
Original Assignee
ERCO 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 ERCO GmbH filed Critical ERCO GmbH
Priority to DE200910049301 priority Critical patent/DE102009049301A1/en
Priority claimed from DE202009016736U external-priority patent/DE202009016736U1/en
Publication of DE102009049301A1 publication Critical patent/DE102009049301A1/en
Application status is Ceased legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00Lighting devices intended for fixed installation
    • F21S8/02Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/0025Combination of two or more reflectors for a single light source
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/04Optical design
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/04Optical design
    • F21V7/048Optical design with facets structure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/04Optical design
    • F21V7/06Optical design with parabolic curvature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/04Optical design
    • F21V7/09Optical design with a combination of different curvatures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00Producing 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
    • F21V13/02Combinations of only two kinds of elements
    • F21V13/04Combinations of only two kinds of elements the elements being reflectors and refractors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/002Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • F21V3/02Globes; Bowls; Cover glasses characterised by the shape

Abstract

The invention relates to u. a. a luminaire (10) for illuminating a building surface (B), comprising a cup-shaped upper reflector (11), in whose interior space (17) a lamp (14) is arranged, a diffuser element (12) arranged in the region of the light outlet opening (18) of the upper reflector , and a sub-reflector (13). The peculiarity exists u. a. in that the upper reflector has a highly reflective inner surface (20) which is divided into a plurality of segments (24, 24a, 24b, 24c, 24d, 24e, 24f).

Description

  • The invention initially relates to a luminaire for illuminating a building surface according to the preamble of claim 1.
  • Such lights have been developed and manufactured by the applicant for quite some time.
  • A luminaire with the features of the preamble of claim 1 is for example from the DE 196 32 665 A1 the applicant known.
  • The known lamp lights has a top reflector, a diffuser element and a sub-reflector.
  • Based on the known lamp, the object of the invention is to further develop a lamp with the features of the preamble of claim 1 such that an improved light distribution is possible.
  • The invention achieves this object with the features of claim 1, in particular with those of the characterizing part, and is accordingly characterized in that the upper reflector has a highly reflective inner surface which is divided into a plurality of segments.
  • The principle of the invention is therefore essentially to replace the conventional upper reflector, which has a continuous smooth inner surface, and which has a parabolic in cross section basic shape, by a faceted reflector. The faceted reflector allows individual calculation and design of the surfaces of the individual segments and thus the achievement of an optimized light distribution. In particular, narrow-distribution light distributions can thus be achieved which were hitherto not possible with luminaires of the prior art. Finally, a lower installation height of the lamp can be achieved. This offers, for example, in the event that the lamp is designed as a ceiling light, improved mounting options.
  • As a luminaire for illuminating a building surface in the sense of claim 1, each light is considered, which illuminates a building or building part surface or an outer surface, possibly also parking areas. Finally, this also lights, with which works of art, such as paintings or statues, can be illuminated.
  • Preferably, the invention relates to so-called downlights, so lights that are designed as recessed ceiling or ceiling lights and illuminate floor surfaces or side wall surfaces of a building.
  • The luminaire according to the invention comprises a top reflector and a bottom reflector. The phrases and directions above or below refer to the installation state of a lamp designed as a recessed ceiling luminaire.
  • The upper reflector is bowl-shaped and has an interior in which a lamp is located. The lamp, so the bulb, can either be inserted from the apex area or from a side wall into the interior. Starting from the lamp, direct light components can fall directly onto the top side of the diffuser element or only fall onto the diffuser element after reflection on the inside of the top reflector.
  • The diffuser element is arranged in the region of a light exit opening of the upper reflector. This formulation includes both a situation where the diffuser element is planar, i. H. is substantially flat and is thus arranged along a light exit plane of the upper reflector. Equally, however, the formulation also includes diffuser elements which, for example, are curved, in particular dome-shaped, and are arranged close to or in the region of a light exit opening of the upper reflector.
  • The diffuser element separates the upper reflector and the lower reflector from each other. Preferably, the upper reflector and lower reflector are formed by separate components. These can be combined to form a unit. The diffuser element separates the interior of the upper reflector from the interior of the lower reflector.
  • The sub-reflector is preferably a darklight reflector.
  • The diffuser element is preferably translucent and may be formed, for example, from glass or plastic. It may be provided on its inside or on its outside partially or completely with a certain structure or roughness, in order to achieve an at least partially diffusive light effect. Alternatively, the material itself may also be selected on the basis of its structure in such a way that, in terms of lighting technology, at least partially diffusive behavior is achieved.
  • The side of the diffuser element facing the light exit opening of the luminaire, that is to say the underside of the diffuser element in the terminology of the claim, provides a separate light emission surface similar to that described in the Applicant's patent application cited above. As a result, an optimal light distribution can be achieved.
  • The upper reflector according to the invention is a faceted reflector. Preferably, it is a reflector with a plurality of segments, each having a curved, in particular curved towards the interior, surface.
  • Further advantageously, the upper reflector is rotationally symmetrical. This means that one, based on a longitudinal center axis of the upper reflector, rotationally symmetric light distribution can be generated.
  • When using a faceted top reflector, it is possible to direct light components emanating from the lamp to certain selected areas of the top of the diffuser element in order to achieve the desired light distribution curve on the building surface.
  • Advantageously, the plurality of segments has a curved surface. Further advantageously, all segments are equipped with a curved surface.
  • A curved surface in the sense of the patent application can be a spherically or aspherically or also cylindrically curved surface.
  • Preferably, the sub-reflector is a darklight reflector. This means that in order to reduce the glare effect, the geometry of the subreflector is made in such a way that a shadow space is provided by the luminaire into which no or almost no light components of the luminaire fall. Only when a viewer moves out of the shadow space and can see the underside of the diffuser element, also light components fall into the eye of the observer, which were reflected by the side walls of the subreflector.
  • According to a further embodiment of the invention, the luminaire emits no or almost no light into a shadow space. The shadow space is provided or limited by a wall-side mounting surface for the luminaire and by a straight line. In the case of a recessed ceiling luminaire, the shadow space is limited on the one hand by the ceiling surface and on the other hand by the straight line. The straight line connects a lower edge of the lower reflector, which is effective in terms of lighting technology, to an opposite, upper edge of the lower reflector which is effective in terms of lighting technology. The angle between the straight line and the mounting surface is the cut-off angle.
  • Within the shadow space defined by the cut-off angle, no light is emitted from the luminaire. The first time a viewer passes the line, light enters his eye.
  • In an advantageous embodiment of the invention, the diffuser element is arranged above a section of the straight line, this section extending within the subreflector. The section corresponds to the shortest connecting line between the upper, technically effective edge of the lower reflector with the opposite, lower photometrically effective edge of the lower reflector. Assuming a rotationally symmetrical design of the subreflector, and assuming further that this portion is rotated about the longitudinal centerline of the subreflector, this rotating portion forms an open-topped cone. The diffuser element is advantageously within this cone or borders on this cone. In degraded embodiments, the cone can also be exceeded slightly downward.
  • According to a further advantageous embodiment of the invention, a lower edge of the diffuser element is arranged near the portion of the straight line extending within the subreflector.
  • The diffuser element may be formed substantially dome-shaped. This means that the diffuser element can be curved, if necessary, also designed as a truncated cone or pointed cone. It is advantageously frosted or teilmattiert formed to provide the desired diffusive lighting effect. It can also be provided that an annular area frosted and an inner, z. B. circular area, clear translucent is formed.
  • Overall, the luminaire can be essentially rotationally symmetrical. However, the invention also encompasses luminaires having a rotationally symmetrical upper reflector, a substantially rotationally symmetrical diffuser element and a sub-reflector whose upper peripheral edge is rotationally symmetrical and whose lower peripheral edge follows a square or rectangular contour, for example.
  • According to a further advantageous embodiment of the invention, the upper reflector on a bowl-shaped basic shape and a highly reflective inner surface, which is divided into a plurality of segments. At least a majority of the segments each have an inwardly curved surface. The basic shape of this reflector is composed of a crown-proximal ball cap portion and a crest-distant portion of a rotating body. With such a reflector, a particularly advantageous light distribution can be achieved.
  • The invention further relates to a reflector for a luminaire according to the preamble of claim 16.
  • Such a reflector is for example from the German patent application of the applicant DE 10 2004 042 915 A1 known.
  • The known reflector has an inner surface with numerous segments. The basic shape of the reflector follows a parabola.
  • Starting from the known reflector having the features of the preamble of claim 16, the invention consists in such a reflector further develop such that it can be advantageously used in a lamp according to claim 1.
  • The invention achieves this object with the features of claim 16, and is accordingly characterized in that the basic shape of the reflector deviates in its cross section from a parabola, and that the segments are designed and arranged such that when a point light source is arranged in a focal point -like center of the reflector, the vast majority of the emanating from the light source and reflected on the inside of the reflector light rays parallel to each other.
  • The principle of the invention consists essentially in that instead of a basic reflector form, which follows a parabola, a basic shape composed of at least two different sections is formed. A near-crest region of the reflector can, for. B. be formed by a ball cap. Here follows the basic shape of the reflector so on the basis of a constant radius when looking at the cross section of the basic shape of a sphere.
  • A region of the reflector close to the edge, that is to say a region of the reflector which is distant from the vertex, however, has a differently shaped section. This can z. B. follow a parabola. This results in a basic shape of a faceted reflector, which differs significantly from all conventional known reflector shapes.
  • Alternatively, the basic shape of the cup-shaped or cup-shaped reflector can also be composed of a first portion which is arranged close to the crest and which is formed for example by a plane, and a second non-crest portion, of planar, slightly inclined to the bottom wall arranged side walls is formed. This results in a cross-section approximately trapezoidal shape, so that the reflector is designed cup-shaped overall.
  • The peculiarity of the reflector according to the invention according to claim 16 is that its basic form deviates from a parabola and, for example, is arbitrary. This can be reduced in the prior art required installation height of a cross-sectionally parabolic reflector.
  • On the other hand, the segments along the inner surface of the reflector are designed and arranged such that a substantially parallel beam path of the reflected light components is generated. Thus, a reflector is provided, which allows a narrow distribution of light at low height.
  • The segments are configured and arranged such that, when an essentially punctiform light source is arranged, whose luminous volume is relatively small, those light components which are emitted by the light source and reflected on the reflector form a substantially parallel beam of rays.
  • The arrangement of the light source takes place in a focal point-like center of the reflector. In the case of an advantageous, about a longitudinal central axis rotationally symmetrical design of the reflector, this focal point-like center lies on the longitudinal central axis. From a focal point can not be spoken because of the deviation of the basic shape of the reflector of a parabola. However, the focal point-like center of the reflector is used for the calculation and predetermination of the surface segments to achieve the desired narrow Lichtabstrahlverhalten.
  • The reflector according to the invention allows for low installation height optimal light distribution. In particular, very narrow-beaming light distributions can be generated, which can not be achieved with conventional reflectors, even with conventional facet reflectors.
  • According to an advantageous embodiment of the invention, the reflector is formed substantially rotationally symmetrical.
  • According to a further advantageous embodiment of the invention, the reflector consists of pressed aluminum.
  • The invention further relates to a module system for luminaires according to claim 22.
  • Starting from the applicant's lamp described above, the object of the invention is to achieve, with a small number of components and the highest possible number of identical parts, variable light distributions.
  • The invention solves this problem with the features of claim 22.
  • The principle of the invention is essentially to achieve a change in the light distribution by replacing a diffuser element. For this purpose, at least two different diffuser elements are provided, which have substantially the same outer dimensions, but show different lighting properties. Thus, for example, a first diffuser element can be used, which is partially matted, and a second diffuser element can be used, which is completely frosted. In the partially frosted reflector element, for example, an inner, central region of a dome-shaped diffuser element can be unmatted, i. H. be left clear and an outer annular area be frosted. In the other diffuser element, a complete matting can be provided.
  • The same dimensions of the diffuser element, in particular the same or substantially the same height and the same or substantially equal outer diameter, allow attachment of both diffuser elements at the same attachment points. A defined interface is provided to that extent. It is insignificant for the invention, whether an attachment of the diffuser element takes place on the upper reflector or on the sub-reflector or on a lamp housing. It is crucial that different diffuser elements, which have different lighting properties and thus allow different light distributions of the luminaire, can be fastened to the same fastening points.
  • As different lighting properties of two diffuser elements is also considered when different areas of a diffuser element are frosted or when areas of a diffuser element are matted to different degrees.
  • Finally, two diffuser elements with different lighting properties can also be formed by using different materials and / or different colors and / or different surface roughnesses or the like.
  • According to an advantageous embodiment of the invention, the two diffuser elements are dome-shaped.
  • According to a further advantageous embodiment of the invention, the two diffuser elements have an equal height.
  • According to a further advantageous embodiment of the invention, both diffuser elements have a same outer radius.
  • Finally, according to an advantageous embodiment of the invention, it may be provided that the first light distribution has a broad-emitting radiation and the second light distribution has a narrow-beam distribution. Finally, more than two diffuser elements may have the same outer dimensions but different lighting properties. For example, it is within the scope of the invention to provide three different diffuser elements, of which one is wide-beam and one narrow-beam and a further diffuser element enables a light distribution, as described for example in the German patent application DE 10 2005 022 054 ,
  • Finally, the invention also relates to a modular system for luminaires according to claim 27.
  • Starting from the in the German patent application DE 196 32 665 A1 described luminaire, the object of the invention is to provide a modular system which allows a variable light distribution with a small number vorzuhaltender components.
  • The invention solves this problem with the features of claim 27.
  • The principle of the invention is that different sub-reflectors are provided, which have the same or substantially the same external dimensions, but have different lighting properties. This may be, for example, subreflectors having the same diameter of an upper peripheral edge to provide a defined connection area, in which, however, different heights are provided from which different lighting properties, namely, for example, different cut-off angle result. Finally, it may also be sub-reflectors, in which one or more inner sides are provided with light-guiding structures, for example, with numerous facets, for example, to illuminate a side wall or to generate focal points of gravity of a light distribution.
  • Further advantages of the invention will become apparent from the non-cited subclaims and from the following description of the embodiments illustrated in the drawings. Show:
  • 1 A first embodiment of a lamp according to the invention in a partially sectioned, schematic view,
  • 2 a top reflector of the lamp 1 in a detail view, for example in a view according to arrow II in 1 .
  • 3 the upper reflector of the luminaire 1 in an enlarged detail in a schematic partially cutaway view,
  • 4 the upper reflector and the lamp of the lamp 1 in individual presentation,
  • 5 in a representation according to 4 the same upper reflector and another lamp inserted therein,
  • 6 in a partially sectioned schematic view of a sub-reflector of a luminaire according to 1 .
  • 7 a further embodiment of a subreflector in a representation according to 6 with respect to the sub-reflector of the 6 changed lighting properties but same dimensions in the area of the upper edge,
  • 8th a further embodiment of a subreflector in a representation according to 6 .
  • 8a a schematic interior view of the reflector of 8th according to view arrow Villa in 8th .
  • 9 a further embodiment of a subreflector for a luminaire according to the invention in a representation according to 8th .
  • 9a an inside view of the reflector of 9 in a representation according to 8a in accordance with arrow IXa in 9 .
  • 10 a diffuser element for a luminaire according to the invention in a bottom view approximately in accordance with a viewing direction of the view arrow 11 in 1 .
  • 11 the diffuser element of 10 in a schematic partially sectioned view approximately along section line XI-XI in 10 .
  • 12 a further embodiment of a diffuser element for a luminaire according to the invention in a representation according to 10 .
  • 13 the diffuser element of 12 in a representation according to 11 .
  • 14 a further embodiment of a diffuser element for a luminaire according to the invention in a representation according to 12 .
  • 15 the diffuser element of 14 in a representation according to 13 .
  • 16 a further embodiment of a reflector according to the invention, in particular with a suitability as the upper reflector of a lamp according to 1 , in a representation according to 2 , and
  • 17 a further embodiment of a reflector element, which is suitable for use as a top reflector in a luminaire according to 1 is suitable, in a representation according to 16 ,
  • The in their entirety in the figures with 10 designated luminaire according to the invention will now be explained with reference to the embodiments. The following description of the figures is, however, preceded that for the sake of clarity identical or comparable parts or elements, sometimes with the addition of small letters, are provided with the same reference numerals.
  • 1 shows a lamp according to the invention 10 with a top reflector 11 , a diffuser element 12 and a sub-reflector 13 , The lamp has a dashed line only shown light housing 16 on, which includes the essential components of the lamp. A lamp base 15 can be fixed relative to the case 16 be attached and a bulb 14 a lamp. This juts into the interior 17 of the upper reflector 11 into it, in such a way that the actual luminous volume 19 of the bulb 14 approximately on the central longitudinal axis L of the lamp 10 lies. In the following description it is assumed that the light 10 , or at least the upper reflector 11 , the diffuser element 12 , and / or the sub-reflector 13 in each case about the central longitudinal axis L are rotationally symmetrical, at least in terms of their basic shape.
  • The upper reflector 11 has a section 23 on, through which the bulb 14 is pluggable. In the embodiment of the 1 . 2 and 4 are cutouts in the sense of a through opening for the light source 14 in the region of a side wall portion of the upper reflector 11 arranged. In a further embodiment according to 5 is the cutout in the area of the vertex 21 arranged the reflector. There are also lamps of the invention, in which two or more cutouts in the wall of the upper reflector 11 are arranged to illuminate the interior 17 of the upper reflector protrude.
  • The light of the 1 is designed as a ceiling light and sits in the assembled state in a ceiling D such that a lower edge 31 of the subreflector 13 essentially flush with or at least near the surface 32 the ceiling wall D is arranged. The lamp 10 is used to illuminate a floor surface B which is in 1 is indicated. The distance A is not to scale.
  • However, the invention includes not only recessed ceiling lights, as in 1 shown, which are otherwise referred to as down lights, but equally ceiling lights, or lights are embedded in a building side wall or a bottom wall. In principle, the invention can also be used in lamps designed as spotlights.
  • The upper reflector 11 is in the luminaire according to the invention 10 designed as a faceted reflector. He has a highly reflective inner surface 20 on that a variety of segments 24 . 24a . 24b . 24c . 24d . 24e . 24f having. 2 makes by showing an interior view of the reflector 11 clearly that between the edge 22 of the upper reflector 11 and the vertex area 21 of the reflector numerous individual segments 24 . 24a . 24b . 24c . 24d . 24e . 24f are arranged. The segments can in particular from the vertex 21 to the edge 22 extending columns of segments, such as the segment row 24a . 24b . 24c suggests. At the same time, the segments may also be arranged in concentric rings, which is due to the sequence of segments 24d . 24e . 24f is indicated.
  • Every single surface of a single segment is shaped in an individual way. In particular, all segments or at least a majority of the segments with one to the interior 17 of the upper reflector 11 outwardly projecting, in particular curved, surface equipped. This surface may in particular be spherical or aspherical, in particular also cylindrically curved. In this regard, reference is made to the German patent applications of the Applicant DE 10 2004 042 915.4 . DE 10 2007 035 528.0 . DE 10 2007 035 396.2 and DE 10 2008 056 103.7 the content of which is hereby included in the content of the present patent application.
  • Some or more of the surfaces of the individual segments, in particular in the embodiments of the following to be described below 16 and 17 , but may also be just trained, as for example in the German patent application DE 10 2008 063 370.4 the applicant is described. The content of this patent application is hereby included in the content of the present patent application in order to avoid repetition.
  • The calculation of the design of the surfaces is carried out by complex simulation methods in order to achieve an optimal light distribution.
  • The diffuser element 12 is translucent and consists for example of glass or plastic. It may be completely or partially frosted, in a particular embodiment of the invention also be formed completely unmatted. It is essentially dome-shaped and separates the interior 17 of the upper reflector 11 from the interior 33 of the subreflector 13 ,
  • Based on 3 should first a particular feature of a reflector according to the invention 11 , who by the light of the 1 as upper reflector 11 is used, are explained:
    All of the previously known from the prior art faceted reflectors have a cross-sectional shape corresponding to the course of a parabola. The reflector according to the invention, however, has a completely different basic form:
    The cross-sectional view according to 3 makes it clear that a near the vertex 21 arranged area 25 of the reflector 11 , which is approximately between the points P 1 and P 2 in the cross-sectional view of 3 runs, is formed by a ball cap. The dashed contour K 1 illustrates by continuing the circular path beyond the points P 1 and P 2 that this section 25 a circular arc around the center of the circle M with radius R follows. The crest-near area 21 is thus formed in cross section of a circular path. Overall, the reflector section follows 25 a ball cap.
  • From the cross section of 3 It can also be seen that the area between the points P 1 and P 3 or equally between the points P 2 and P 4 deviates from the radius. These sections follow the reflector 11 of the embodiment of 3 the contour of a parabola. The further course of the parabola is indicated by the dashed contour line K 2 towards the region near the crest.
  • In other embodiments, the contour of this apex distant portion 26 also follow any other contour, with the surfaces of the segments 24 . 24a . 24b . 24c . 24d are formed and arranged so that a parallel light beam is achieved.
  • Due to this special design of the basic shape of the upper reflector 11 in composition of a spherical cap section 25 and a non-crest section 26 under arrangement specially designed segments 24 . 24a . 24b . 24c . 24d . 24e . 24f , achieves the achievement of a particularly optimized light distribution curve at low height: Overall, a very narrow-emitting light distribution is possible, the one top 34 of the diffuser element 12 can act in an optimized manner, so that the light distribution of the lamp 10 can be optimized equally.
  • This is to be illustrated by the light rays 27a . 27c and 27e , These beams all hit a spherical cap section 25 of the reflector 11 according to 3 and are called rays of light 27b . 27d and 27f reflected. The overall picture of the 3 In any case, in the schematic view, results in a relatively narrow-emitting light beam, which on a central region of the top 34 of the diffuser element 12 can be steered.
  • Light beam components, starting from a luminous volume 19 (indicated in 3 ) on a parabolic section 26 of the upper reflector 11 meet, such as the indicated light beam 27g be reflected, at least partially, at a larger opening angle, which is due to the light beam component 27h merely intended to be indicated by way of example.
  • Also the rays of light 27h However, substantially parallel or almost parallel to the run on the spherical cap portion 25 reflected light rays passing through the light arrows 27f . 27d . 27b are exemplified.
  • Of course, with respect to the above description, it should be noted that the course of the light rays depends on the individual curvature of the surface of each individual segment 24 depends.
  • In the sum of all light rays, however, results from the arrangement of a crown-proximal ball cap section 25 in combination with a crest-distant z. B. parabolic section 26 and the special design of the segment surfaces optimal light distribution.
  • Out 3 In addition, it can be seen that the center M, which is the ball cap 25 generated to the vertex area 21 has a greater distance than the luminous volume 19 in the interior of the reflector 11 protruding lamp.
  • The 16 shows in a representation similar to the 3 , an alternative embodiment of a reflector element 11 , which as Oberreflector in a lamp according to 1 can be used.
  • The reflector 11 is in turn formed around a central longitudinal axis L substantially rotationally symmetrical and comprises a bottom wall 43 which is aligned substantially along a plane E.
  • Starting from this bottom wall 43 extend opposite side walls 44a . 44b almost vertical, at an angle α of about 80 ° down.
  • In cross-section you can see that the side wall 44a . 44b each formed along a plane.
  • The inside 20 of the reflector 11 is with a variety of segments 24 . 24a . 24b . 24c . 24d occupied.
  • Again, there is a lamp 14 through a section 23 in the bottom wall 43 of the reflector 11 from above, ie inserted along the longitudinal central axis L. The lamp 14 has a small luminous volume 19 so that the lamp can be labeled as a substantially punctiform light source.
  • The lamp 14 is arranged so that the luminous volume 19 located in a focal point-like center Z of the reflector.
  • Starting from the center Z light rays go 45a . 45b . 45c . 45d . 45e . 45f . 45g and meet on corresponding segment surfaces of the inner surface 20 of the reflector. They are there as beams of light 46a . 46b . 46c . 46d . 46e . 46f . 46g reflect and leave the reflector as a substantially parallel, along the longitudinal central axis L aligned light beam.
  • It should be noted that 16 the relationships only schematically shows. The reflective surfaces of the segments 24 . 24a . 24b . 24c . 24d However, they are designed and positioned so that just such a light distribution is achieved.
  • This can also be a reflector 11 according to 16 a substantially parallel light beam, ie generate a very narrow light distribution.
  • It is further noted that using a bulb 14 according to 16 due to a dimming cap 47 , the component of the bulb 14 is, no direct light components are emitted. All, the reflector 11 leaving light components are reflected light components, so that can be ensured for a very narrow light distribution.
  • Another embodiment of a reflector according to the invention 11 shows 17 , Again, the reflection behavior of the reflector is shown only by way of example with reference to some light rays: The basic shape of the reflector 11 according to 17 is in turn made up of a vertex 21 near section 25 and a non-crest section 26 together. The crest-like section 25 is in turn formed as a spherical cap portion and may for example also be formed smooth continuous. He makes sure that from the light source 14 outgoing light rays 45a . 45b as parallel to the longitudinal center axis L of the reflector 11 parallel light rays 46a . 46b be reflected.
  • The vertex 21 distant section 26 is in the embodiment of 17 formed by an open space, such that this section 26 has a curved shape when viewing the cross section. The numerous segments 24 . 24a . 24b . 24c . 24d . 24e . 24f are formed and arranged such that light rays 45c . 45d . 45e . 45f that from the light source 14 coming to these segments of the crest-distant section 26 meet, as parallel rays of light 46c . 46d . 46e . 46f , which are also aligned parallel to the longitudinal central axis L, are reflected.
  • This can also with the embodiment of the reflector 11 of the 17 a parallel beam and thus a very narrow light distribution are generated. Also a reflector 11 according to 17 is thus according to a luminaire 1 can be used advantageously as a top reflector.
  • The synopsis of 4 and 5 should imply that the same diffuser element 12 suitable for different lamp types:
  • 4 shows a lamp 14a through a section 23a in the side wall of the reflector 11 in the interior 17 protrudes. 5 shows a second type of lamp 14b passing through a crested opening 23b in the interior 17 of the reflector protrudes. Due to the special basic shape of the reflector 11 comprising a spherical cap portion 25 and a parabolic section 26 as well as through the optimized choice of the surfaces of the individual segments 24 can use the same reflector for different lamp types 14a . 14b be used, only at different points in the upper reflector 11 the insertion opening 23 is to be attached.
  • As evidenced by the embodiment of 6 the sub-reflector will now be explained:
    The modular system according to the invention for assembling a luminaire according to 1 In one embodiment, it includes different subreflectors that have the same dimensions but different lighting properties.
  • The same dimensions in the sense of the present patent application, as according to the embodiments of the 6 to 9a It can be explained that the connection areas of the respective sub-reflector 13 are held equal. So the two different subreflectors 13a and 13b of the 6 and 7 same upper outer diameter S 1 and S 2 . The outer diameter S 1 and S 2 are therefore chosen to be the same size, so that a kind of lighting interface to the diffuser element 12 the light of the 1 is guaranteed.
  • However, the lighting interface allows it, that the two reflectors 13a and 13b of the 6 and 7 have different heights h 1 and h 2 . The different heights and also the possibly differently curved inner surfaces 35a and 35b the two subreflectors 13a and 13b result in the result, for example, to different cut-off angles.
  • In the 6 and 7 is each the top 32 the ceiling wall is indicated, which forms an angle α or β with a straight line G. The respective straight line G connects a lower edge region 31 of the subreflector 13 each with an opposite upper edge region 36 of the subreflector 13 , The upper photometrically effective edge 36 of the lower reflector and the lower peripheral edge 31 of the subreflector 13 form on the basis of their connecting line thus this straight line.
  • The angle between the respective straight line G and the top 32 the ceiling wall D provides a cut-off angle. Darklight reflectors are all about shadows 37 to provide in which no or almost no light is thrown from the lamp. This complete dimming is achieved by putting in the shadow space 37 from the light no or almost no direct light from the bottom 38 of the diffuser element 12 go out, meet, and also no or almost no reflected light components coming from the diffuser element 12 go out and unique on the inside 35 of the subreflector 13 be reflected.
  • In particular 1 makes clear, those sections form 39a . 39b the straight line G, which is inside the interior 33 of the subreflector 13 run, with imaginary rotation about the longitudinal center axis L of the lamp 10 a pointed cone, upwardly open recording room 40 , The diffuser element 12 is in the luminaire according to the invention 10 arranged such that it is within this receiving space 40 is housed and with its bottom 38 advantageous to the sections 39a . 39b approaches or, if possible, only slightly surmounting or cutting them.
  • A special feature of the lighting system according to the invention is shown in the 6 and 7 to see that the same upper reflector 11 and the same diffuser element 12 each with different subreflectors 13a . 13b can be combined to different lighting properties of the lamp 10 to achieve.
  • The 8th and 9 show two further embodiments of subreflectors 13c and 13d for a module system according to the invention for assembling a luminaire according to 1 ,
  • The subreflectors 13c and 13d In turn, have an identical photometric connection point by providing a same upper outer diameter S 1 , the outer diameter S 1 of the embodiments of the 6 and 7 equivalent. Also, the heights h 1 and h 2 of the two sub-reflectors 13c and 13d are presently identical and correspond z. B. the height of the reflectors of 6 and 7 ,
  • The peculiarity here is that a section of the inner surface 35 of the subreflector 13c with numerous segments 41a . 41b is provided, which serve a special light control. Like the inside view of the 8a shows is the vast majority of the inner surface 35 of the subreflector 13c smooth and only a circumferential segment 42 occupied with facets in the manner of a circumferential angle range.
  • In terms of lighting technology, for example, this segment can serve to replace a reflector blade required according to the prior art in order to control light components, such as the light beam 28a . 28b is illustrated in an area relatively near the top 32 to steer the ceiling wall D. Especially in the case of the training of the light 10 as a downlight, a sub-reflector 13c used is the faceted peripheral area 42 the inside 35 of the reflector 13c the illumination of ceiling-near wall areas.
  • Finally, the embodiment of the shows 9 and 9a in that a symmetrical formation with respect to two mirror planes can also be achieved, such that two circumferential angular ranges 42a and 42b the inner surface 35 of the reflector 13d are occupied by numerous segments. Again, it should be noted that the surface of the segments is highly reflective and each individually shaped, in particular, is curved.
  • The different reflectors 13c and 13d Can be used in combination with otherwise identical components 11 and 12 combined and used.
  • Based on 10 to 15 will be explained below that different diffuser elements 12a . 12b . 12c can be used as part of a lighting system according to the invention to lights 10 according to 1 to provide with different lighting properties.
  • All embodiments according to the 10 to 15 have the same external dimensions. In particular, the outer diameter W 1 , W 2 , W 3 is in all diffuser elements 12a . 12b . 12c the same. The peak heights m 1 , m 2 , m 3 are identical in all three embodiments.
  • The diffuser element 12 is substantially dome-shaped, that is curved and made of a translucent material, preferably made of glass or plastic. The top 34 and / or the bottom 38 of the diffuser element 12a . 12b . 12c can be provided with a special structure, for. B. be roughened or be frosted in another way. Alternatively, the material itself, z. B. due to its structure, provide a matted transmissivity or cause a diffusive light scattering.
  • The embodiments of the 10 to 15 show that in a first embodiment of a diffuser element 12a the diffuser element is matted overall. In the embodiments of the 12 and 13 is an outer narrow border area 29 of the diffuser element 12b frosted and inner central area 30 not frosted, so clearly formed.
  • In the embodiment of the 14 and 15 is the frosted annular area 29 in comparison to the embodiment of 12 and 13 formed larger area and the inner, clearly held central area 30 compared to the embodiment of the 12 and 13 formed smaller area.
  • The three diffuser elements 12a . 12b . 12c can with identical top reflectors 11 , Bulbs 14 and subreflectors 12 combined, however, ensure due to the different matting for different lighting properties of the lamp 10 , So ensures the diffuser element 12a when used in a luminaire according to 1 for a very wide distribution of light. Such a lamp is particularly suitable, for example, for use in normal room heights.
  • Will replace the diffuser element 12a a diffuser element 12b according to 12 and 13 in a light according to 1 used, can be a particularly narrow-emitting or deep-emitting light or such a light distribution can be achieved. This is particularly suitable for achieving a high degree of uniformity in rooms with high building ceilings.
  • With a diffuser element 12c according to the 14 and 15 Can be used in a luminaire according to 1 a focal point of gravity can be achieved under the luminaire.
  • This can only by selecting the diffuser element in otherwise identical components 11 and 13 a completely different light characteristics of the lamp can be achieved.
  • The diffuser element 12 is like this 1 shows, advantageously in the region of a light exit opening 18 of the upper reflector 11 arranged.
  • Instead of a dome-shaped design as shown in the figures, the diffuser element may also have a pointed cone or surface configuration.
  • An attachment of the essential lighting components 11 . 12 . 13 the light 10 can be done either in a direct manner such that the three elements are fastened together. In this case, a handling unit can be achieved, the total of the lamp housing 16 is determined. Alternatively, each one of the three parts 11 . 12 . 13 relative to the luminaire housing 16 be determined.
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • DE 19632665 A1 [0003, 0057]
    • DE 102004042915 A1 [0031]
    • DE 102005022054 [0055]
    • DE 102004042915 [0086]
    • DE 102007035528 [0086]
    • DE 102007035396 [0086]
    • DE 102008056103 [0086]
    • DE 102008063370 [0087]

Claims (29)

  1. Lamp ( 10 ) for illuminating a building surface (B), comprising a shell-shaped upper reflector ( 11 ), in whose interior ( 17 ) a lamp ( 14 ), one in the region of the light exit opening ( 18 ) of the upper reflector arranged diffuser element ( 12 ), and a sub-reflector ( 13 ), characterized in that the upper reflector has a highly reflective inner surface ( 20 ), which are divided into a plurality of segments ( 24 . 24a . 24b . 24c . 24d . 24e . 24f ) is divided.
  2. Luminaire according to claim 1, characterized in that the plurality of segments ( 24 . 24a . 24b . 24c . 24d . 24e . 24f ) has a curved surface.
  3. Luminaire according to claim 1 or 2, characterized in that the light as a downlight ( 10 ) is trained.
  4. Luminaire according to one of the preceding claims, characterized in that the sub-reflector ( 13 ) is a darklight reflector.
  5. Luminaire according to one of the preceding claims, characterized in that the luminaire ( 10 ) into a shadow space ( 37 ) radiates almost no light into it.
  6. Luminaire according to claim 5, characterized in that the shadow space ( 37 ) from a wall-side mounting surface ( 32 ) for the luminaire and is delimited by a straight line (G).
  7. Luminaire according to claim 5 or 6, characterized in that the shadow space ( 37 ) is bounded by a straight line (G), which has a lower, technically effective edge ( 31 ) of the subreflector ( 13 ) with an opposite, upper, technically effective edge ( 36 ) of the subreflector ( 13 ) connects.
  8. Luminaire according to claim 6 or 7, characterized in that the diffuser element ( 12 ) above one within the subreflector ( 13 ) extending section ( 39a . 39b ) of the straight line (G) is arranged.
  9. Luminaire according to one of claims 6 to 8, characterized in that a lower side ( 38 ) of the diffuser element ( 12 ) near one within the subreflector ( 13 ) extending section ( 39a . 39b ) of the straight line (G) is arranged.
  10. Luminaire according to one of the preceding claims, characterized in that the diffuser element ( 12 ) is formed dome-shaped.
  11. Luminaire according to one of the preceding claims, characterized in that the diffuser element ( 12 ) is formed frosted.
  12. Luminaire according to one of claims 1 to 10, characterized in that the diffuser element ( 12 ) is formed partially matted.
  13. Luminaire according to claim 12, characterized in that the diffuser element ( 12 ) is formed such that an annular region ( 29 ) and an inner area ( 30 ) is clearly formed
  14. Luminaire according to one of the preceding claims, characterized in that the luminaire ( 10 ) is formed substantially rotationally symmetrical about a central longitudinal axis (L).
  15. Lamp ( 10 ) according to one of the preceding claims, characterized in that the Oberreflekor ( 11 ) a bowl-shaped basic shape and a highly reflective inner surface ( 20 ), which are divided into a plurality of segments ( 24 . 24a . 24b . 24c . 24d . 24e . 24f ), wherein at least a plurality of the segments each have an inwardly projecting, in particular curved surface, wherein the basic shape of the reflector ( 11 ) differs in its cross section from a parabola, and wherein the segments ( 24 . 24a . 24b . 24c . 24d . 24e . 24f ) are formed and arranged such that in the arrangement of a punctiform light source ( 14 ) in a focal point-like center (Z) of the reflector ( 11 ) the majority of the emanating from the light source and on the inside ( 20 ) of the reflector reflected light rays ( 46a . 46b . 46c . 46d . 46e . 46f ) runs parallel to each other.
  16. Reflector ( 11 ) for a lamp ( 10 ), in particular for a luminaire according to one of the preceding claims, with a shell-shaped or cup-shaped basic shape and with a highly reflecting inner surface ( 20 ), which are divided into a large number of segments ( 24 . 24a . 24b . 24c . 24d . 24e . 24f ), wherein at least a plurality of the segments each have an inwardly projecting, in particular curved surface, characterized in that the basic shape of the reflector ( 11 ) deviates in its cross section from a parabola, and that the segments ( 24 . 24a . 24b . 24c . 24d . 24e . 24f ) are formed and arranged such that in the arrangement of a punctiform light source ( 14 ) in a focal point-like center (Z) of the reflector ( 11 ) the majority of the emanating from the light source and on the inside ( 24 ) of the reflector reflected light rays ( 46a . 46b . 46c . 46d . 46e . 46f ) runs parallel to each other.
  17. Reflector for a luminaire according to claim 16, characterized in that a narrow-beam light distribution can be achieved with the reflector, the is approximated to the light distribution of a cross-sectionally parabolic reflector.
  18. Reflector for a luminaire according to claim 16 or 17, characterized in that the basic shape of the reflector from a substantially flat bottom wall ( 43 ) and in cross-section substantially planar, in particular relative to the ground ( 43 ) inclined side walls ( 44a . 44b ).
  19. Reflector for a luminaire according to claim 16 or 17, characterized in that the basic shape of the reflector from a crest-close spherical cap portion ( 25 ) and a non-crest section ( 26 ) of a rotational body, such as rotational paraboloid or ellipsoid of revolution, composed.
  20. Reflector according to one of claims 16 to 19, characterized in that the reflector ( 11 ) is formed substantially rotationally symmetrical about a central longitudinal axis (L).
  21. Reflector according to one of claims 16 to 20, characterized in that the reflector ( 11 ) consists of pressed aluminum.
  22. Module system for luminaires, in particular for luminaires according to one of the preceding claims, in particular for downlights, comprising a shell-shaped upper reflector ( 11 ), which has a highly reflective inner surface ( 20 ), which are divided into a plurality of segments ( 24 . 24a . 24b . 24c . 24d . 24e . 24f ), and in its interior ( 17 ) a lamp ( 14 ) and a sub-reflector ( 13 ), wherein in the region of the light exit opening ( 18 ) of the upper reflector a diffuser element ( 12 ) can be arranged, wherein to achieve a first light distribution, a first diffuser element ( 12a ), and wherein to achieve a second light distribution, a second diffuser element ( 12b . 12c ), which has the same external dimensions (W 1 , W 2 , W 3 , M 1 , M 2 , M 3 ) and different lighting properties.
  23. Module system for luminaires according to claim 22, characterized in that the first diffuser element ( 12a ) And the second diffuser element are formed dome-shaped.
  24. Module system for luminaires according to claim 22 or 23, characterized in that the first and the second diffuser element ( 12b . 12c ) have an equal height (M 1 , M 2 , M 3 ).
  25. Module system for luminaires according to one of claims 22 to 24, characterized in that the first diffuser element ( 12a ) and the second diffuser element ( 12b . 12c ) have a same outer radius (W 1 , W 2 , W 3 ).
  26. Module system for luminaires according to one of claims 24 to 25, characterized in that the first light distribution broad-emitting and the second light distribution is designed narrow-beam.
  27. Module system for luminaires, in particular for luminaires according to one of the preceding claims, in particular for downlights, comprising a shell-shaped upper reflector ( 11 ), which has a highly reflective inner surface ( 20 ), which are divided into a plurality of segments ( 24 . 24a . 24b . 24c . 24d . 24e . 24f ), and in its interior ( 17 ) a lamp ( 14 ) and a sub-reflector ( 13 ), wherein in the region of the light exit opening ( 18 ) of the upper reflector ( 11 ) a diffuser element ( 12 ) can be arranged, wherein to achieve a first light distribution, a first sub-reflector ( 13a ) is provided, and wherein to achieve a second light distribution, a second sub-reflector ( 13b . 13c . 13d ), which has the same external dimensions (S 1 , S 2 ) and different lighting properties
  28. Module system for luminaires according to claim 27, characterized in that the first sub-reflector ( 13a ) and the second sub-reflector ( 13b . 13c . 13d ) Darklight reflectors are.
  29. Module system for luminaires according to claim 27 or 28, characterized in that the first sub-reflector provides a first cut-off angle (α) and the second sub-reflector a second, different cut-off angle (β).
DE200910049301 2009-10-13 2009-10-13 lamp Ceased DE102009049301A1 (en)

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DE200910049301 DE102009049301A1 (en) 2009-10-13 2009-10-13 lamp
DE202009016736U DE202009016736U1 (en) 2009-10-13 2009-12-10 Module construction system for a recessed luminaire
EP10010248A EP2312201A2 (en) 2009-10-13 2010-09-23 Lighting device for illumination of a building surface

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* Cited by examiner, † Cited by third party
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DE102011114196A1 (en) * 2011-09-22 2013-03-28 Osram Opto Semiconductors Gmbh Optical element and luminaire with an optical element
CN107965680A (en) * 2016-10-18 2018-04-27 马士科技有限公司 The reflector of lighting source and the lighting device for including the reflector

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19632665A1 (en) 1996-02-05 1997-08-07 Erco Leuchten Reflector luminaire having a least one rotationally symmetrical or cylindrical reflector surface reflector
DE102004042915A1 (en) 2004-09-02 2006-03-23 Erco Leuchten Gmbh Luminaire for illuminating building surfaces or parts of buildings
DE102005022054A1 (en) 2005-05-09 2006-11-16 Erco Leuchten Gmbh lamp
DE102007035396A1 (en) 2007-07-26 2009-01-29 Erco Leuchten Gmbh lamp
DE102007035528A1 (en) 2007-07-26 2009-01-29 Erco Leuchten Gmbh lamp
DE102008056103A1 (en) 2008-11-06 2010-05-12 Erco Gmbh lamp
DE102008063370A1 (en) 2008-11-06 2010-05-20 Erco Gmbh lamp

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19632665A1 (en) 1996-02-05 1997-08-07 Erco Leuchten Reflector luminaire having a least one rotationally symmetrical or cylindrical reflector surface reflector
DE102004042915A1 (en) 2004-09-02 2006-03-23 Erco Leuchten Gmbh Luminaire for illuminating building surfaces or parts of buildings
DE102005022054A1 (en) 2005-05-09 2006-11-16 Erco Leuchten Gmbh lamp
DE102007035396A1 (en) 2007-07-26 2009-01-29 Erco Leuchten Gmbh lamp
DE102007035528A1 (en) 2007-07-26 2009-01-29 Erco Leuchten Gmbh lamp
DE102008056103A1 (en) 2008-11-06 2010-05-12 Erco Gmbh lamp
DE102008063370A1 (en) 2008-11-06 2010-05-20 Erco Gmbh lamp

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