EP2312201A2 - Luminaire pour illumination d'une surface d'un édifice - Google Patents

Luminaire pour illumination d'une surface d'un édifice Download PDF

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Publication number
EP2312201A2
EP2312201A2 EP10010248A EP10010248A EP2312201A2 EP 2312201 A2 EP2312201 A2 EP 2312201A2 EP 10010248 A EP10010248 A EP 10010248A EP 10010248 A EP10010248 A EP 10010248A EP 2312201 A2 EP2312201 A2 EP 2312201A2
Authority
EP
European Patent Office
Prior art keywords
reflector
diffuser element
light
lamp
segments
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10010248A
Other languages
German (de)
English (en)
Inventor
Markus Dr.-Ing. Görres
Matthias Dipl.-Phys. Dr. rer. nat Bremerich
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
Publication of EP2312201A2 publication Critical patent/EP2312201A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026—Lighting 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • 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
    • F21V7/04—Optical design
    • 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
    • F21V7/04—Optical design
    • F21V7/048—Optical design with facets structure
    • 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
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature
    • 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
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • 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
    • F21V13/04—Combinations of only two kinds of elements the elements being 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/002—Fastening 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
    • 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
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape

Definitions

  • the invention initially relates to a luminaire for illuminating a building surface according to the preamble of claim 1.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 of the interior of the subreflector.
  • 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.
  • it is a reflector with a plurality of segments, each having a curved, in particular curved towards the interior, surface.
  • 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.
  • 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.
  • the sub-reflector is a darklight reflector.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 a ring-shaped area frosted and an inner, z. B. circular area, clear translucent is formed.
  • the luminaire can be designed substantially rotationally symmetrical about a central longitudinal axis.
  • 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.
  • 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 basic shape of the reflector deviates in its cross section from a parabola, and that the segments are designed and arranged such that when arranging a punctiform light source in a focal point center of the reflector, the vast majority of emanating from the light source and at the Inside the reflector reflected light rays parallel to each other.
  • the invention further relates to a reflector for a luminaire according to the preamble of claim 13.
  • 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.
  • 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 13, 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 formed and arranged such that when a punctiform 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.
  • 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 a basic shape of a faceted reflector, which differs significantly from all conventional reflector forms known.
  • 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 13 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.
  • 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.
  • 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.
  • this focal point-like center is located 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.
  • the focal point-like center of the reflector is used for the calculation and predetermination of the surface segments to achieve the desired narrow Lichtabstrahl Products.
  • the reflector according to the invention allows for low installation height optimal light distribution.
  • very narrow-beaming light distributions can be generated, which can not be achieved with conventional reflectors, even with conventional facet reflectors.
  • the reflector is characterized in that with the reflector a narrow-beam light distribution can be achieved, which is approximated to the light distribution of a parabolic reflector in cross-section.
  • the reflector is characterized in that the basic shape of the reflector from a substantially flat bottom wall and in cross-section substantially flat, in particular relative to the bottom inclined side walls, composed.
  • the reflector is characterized in that the basic shape of the reflector from a crest-near spherical cap portion and a crest-distant portion of a rotational body, such as rotational paraboloid or ellipsoid of revolution, composed.
  • the reflector is formed substantially rotationally symmetrical.
  • the reflector consists of pressed aluminum.
  • the invention further relates to a module system for luminaires according to claim 14.
  • 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 14.
  • the principle of the invention is essentially to achieve a change in the light distribution by replacing a diffuser element.
  • 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.
  • a first diffuser element can be used, which is partially matted
  • a second diffuser element can be used, which is completely frosted.
  • 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.
  • a complete matting can be provided.
  • the same dimensions of the diffuser element 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.
  • 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.
  • the two diffuser elements are dome-shaped.
  • the two diffuser elements have an equal height.
  • both diffuser elements have a same outer radius.
  • the first light distribution has a broad-emitting radiation and the second light distribution has a narrow-beam distribution.
  • more than two diffuser elements may have the same outer dimensions but different lighting properties.
  • the invention also relates to a modular system for luminaires according to claim 15.
  • 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 15.
  • 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, where, however different heights are provided, from which different lighting properties, namely, for example, different cut-off angle result.
  • 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.
  • the modular system is advantageously characterized in that the first sub-reflector and the second sub-reflector are Darklight reflectors.
  • the modular system is advantageously characterized in that the first sub-reflector provides a first cut-off angle ( ⁇ ) and the second sub-reflector provides a second, different cut-off angle ( ⁇ ).
  • Fig. 1 shows a lamp 10 according to the invention 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, which comprises the essential components of the lamp.
  • a lamp cap 15 may be firmly fixed relative to the housing 16 and a lighting means 14, so a lamp support. This protrudes into the interior 17 of the upper reflector 11, such that the actual luminous volume 19 of the luminous means 14 lies approximately on the central longitudinal axis L of the luminaire 10.
  • the luminaire 10, or at least the upper reflector 11, the diffuser element 12, and / or the sub-reflector 13 are each rotationally symmetrical about the central longitudinal axis L, at least with regard to their basic shape.
  • the upper reflector 11 has a cutout 23, through which the illuminant 14 can be inserted.
  • the cutout is arranged in the region of the vertex 21 of the reflector.
  • lamps of the invention in which two or more cutouts arranged in the wall of the upper reflector 11 are to project a lamp in the interior 17 of the upper reflector.
  • the light of the Fig. 1 is designed as a recessed ceiling light and sits in the mounted state in a ceiling D such that a lower edge 31 of the lower reflector 13 is substantially flush with or at least close to the surface 32 of the ceiling wall D.
  • the lamp 10 is used to illuminate a floor surface B, the in Fig. 1 is indicated.
  • the distance A is not to scale.
  • the invention includes not only recessed ceiling lights, as in Fig. 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.
  • the invention can also be used in lamps designed as spotlights.
  • the upper reflector 11 is formed in the luminaire 10 according to the invention as a faceted reflector. It has a highly reflective inner surface 20 having a plurality of segments 24, 24a, 24b, 24c, 24d, 24e, 24f.
  • Fig. 2 makes it clear by representation of an interior view of the reflector 11 that between the edge 22 of the upper reflector 11 and the apex portion 21 of the reflector numerous individual segments 24, 24a, 24b, 24c, 24d, 24e, 24f are arranged.
  • the segments can be arranged in particular in columns extending from the apex 21 to the edge 22 of segments, as indicated, for example, by the segment row 24a, 24b, 24c.
  • the segments can also be arranged in concentric rings, which is indicated by the segment sequence 24d, 24e, 24f.
  • Every single surface of a single segment is shaped in an individual way.
  • all segments or at least a majority of the segments are provided with a surface that projects toward the interior 17 of the upper reflector 11, in particular with a curved surface.
  • This surface may in particular be spherical or aspherical, in particular also cylindrically curved.
  • DE 10 2004 042 915.4 DE 10 2007 035 528.0 .
  • 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 formed substantially dome-shaped and separates the interior 17 of the upper reflector 11 from the interior 33 of the lower reflector thirteenth
  • the cross-sectional view according to Fig. 3 makes it clear that a region 25 of the reflector 11 arranged near the vertex 21 and approximately between the points P 1 and P 2 in the cross-sectional representation of FIG Fig. 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 addition that this section 25 follows a circular arc around the circle center M with radius R.
  • the crest-near region 21 is thus formed in cross section by a circular path.
  • the reflector section 25 follows a ball cap.
  • this off-peak portion 26 may 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.
  • This particular design of the basic shape of the upper reflector 11 in composition of a spherical cap portion 25 and a distant portion 26 with the arrangement of specially trained segments 24, 24a, 24b, 24c, 24d, 24e, 24f, to achieve a particularly optimized light distribution curve at low height succeed: Overall, a very narrow distribution of light is possible, which can act on an upper side 34 of the diffuser element 12 in an optimized manner, so that the light distribution of the lamp 10 can be equally optimized.
  • Light beam components starting from a luminous volume 19 (indicated in FIG Fig. 3 ) to meet a parabolic section 26 of the upper reflector 11, such as the indicated light beam 27g are, at least partially, reflected at a larger opening angle, which should be indicated by the light beam portion 27h only by way of example.
  • the light ray portions 27h are also substantially parallel or nearly parallel to those on the Ball cap portion 25 reflected light beams, which are exemplified by the light arrows 27f, 27d, 27b.
  • the Fig. 16 shows in a representation similar to the Fig. 3 , an alternative embodiment of a reflector element 11, which as a top reflector in a luminaire according to Fig. 1 can be used.
  • the reflector 11 is in turn formed substantially rotationally symmetrical about a longitudinal central axis L and comprises a bottom wall 43, which is aligned substantially along a plane E.
  • opposing side walls 44a, 44b extend almost vertically, at an angle ⁇ of about 80 ° downwards.
  • the inner side 20 of the reflector 11 is filled with a plurality of segments 24, 24a, 24b, 24c, 24d.
  • a lamp 14 is inserted through a cutout 23 in the bottom wall 43 of the reflector 11 from above, ie 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 such that the luminous volume 19 is located in a focal point-like center Z of the reflector.
  • light rays 45a, 45b, 45c, 45d, 45e, 45f, 45g exit and strike corresponding segment surfaces of the inner surface 20 of the reflector. They are reflected there as light beams 46a, 46b, 46c, 46d, 46e, 46f, 46g and leave the reflector as a substantially parallel, along the longitudinal central axis L aligned light beam.
  • Fig. 16 the relationships only schematically shows. However, the reflective surfaces of the segments 24, 24a, 24b, 24c, 24d are formed and positioned so that such a light distribution is achieved.
  • FIG. 17 Another embodiment of a reflector 11 according to the invention shows Fig. 17 , Here too, the reflection behavior of the reflector is shown merely by way of example with reference to a few light beams:
  • the basic shape of the reflector 11 in accordance with FIG Fig. 17 is in turn made up of a vertex 21 near section 25 and a vertex remote section 26 together.
  • the crest-near portion 25 is in turn formed as a spherical cap portion and may for example also be formed smooth continuous. It ensures that the light beams 45a, 45b coming from the light source 14 are reflected as parallel light beams 46a, 46b parallel to the longitudinal central axis L of the reflector 11.
  • the apex 21 remote section 26 is in the embodiment of Fig. 17 formed by a free surface, 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 coming from the light source 14 impinge on these segments of the off-center portion 26 as parallel light rays 46c, 46d, 46e, 46f, which are also aligned parallel to the longitudinal central axis L, are reflected.
  • a parallel beam and thus a very narrow light distribution are generated.
  • a Reflector 11 according to Fig. 17 is thus according to a luminaire Fig. 1 can be used advantageously as a top reflector.
  • FIGS. 4 and 5 The synopsis of FIGS. 4 and 5 is intended to indicate that the same diffuser element 12 is suitable for different lamp types:
  • Fig. 4 shows a lamp 14a, which projects through a cutout 23a in the side wall of the reflector 11 in the interior 17.
  • Fig. 5 shows a second lamp type 14b, which protrudes through a close-up arranged opening 23b in the interior 17 of the reflector. Due to the particular basic shape of the reflector 11, comprising a spherical cap portion 25 and a parabolic section 26 and by the optimized choice of the surfaces of the individual segments 24, the same reflector for different lamp types 14a, 14b are used, only at different locations in the upper reflector 11th the insertion opening 23 is to be attached.
  • the modular system according to the invention for assembling a luminaire according to Fig. 1 includes different subreflectors that have the same dimensions but different lighting properties.
  • the lighting interface makes it possible that the two reflectors 13a and 13b of FIGS. 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 of the two sub-reflectors 13a and 13b result in the result, for example, at different cut-off angles.
  • the upper side 32 of the ceiling wall is indicated, which forms an angle ⁇ or ⁇ with a straight line G.
  • the respective straight line G connects a lower edge region 31 of the lower reflector 13 in each case with an opposite upper edge region 36 of the lower reflector 13.
  • the upper photometrically effective edge 36 of the lower reflector and the lower peripheral edge 31 of the lower reflector 13 thus form this line due to their connecting line.
  • the angle between the respective straight line G and the upper side 32 of the ceiling wall D provides a cut-off angle.
  • Darklight reflectors are concerned with providing a shadow space 37 into which no or almost no light is thrown from the luminaire. This complete dimming is achieved in that in the shadow space 37 of the lamp no or almost no direct light components emanating from the bottom 38 of the diffuser element 12, meet, and also no or almost no reflected light components emanating from the diffuser element 12 and once reflected on the inside 35 of the subreflector 13.
  • Fig. 1 makes clear that those portions 39a, 39b of the line G, which extend within the interior 33 of the subreflector 13, with imaginary rotation about the longitudinal center axis L of the lamp 10 a pointed cone, upwardly open receiving space 40.
  • the diffuser element 12 is in the lamp according to the invention 10 arranged so that it is housed within this receiving space 40 and advantageously with its bottom 38 abuts the sections 39a, 39b or this only slightly surmounted or intersects if possible.
  • FIGS. 6 and 7 A special feature of the lighting system according to the invention is shown in the FIGS. 6 and 7 It can be seen that the same upper reflector 11 and the same diffuser element 12 can each be combined with different sub-reflectors 13a, 13b in order to achieve different lighting properties of the luminaire 10.
  • FIGS. 8 and 9 show two further embodiments of subreflectors 13c and 13d for a module system according to the invention for assembling a lamp according to Fig. 1 ,
  • the subreflectors 13c and 13d in turn have an identical photometric connection point by providing a same upper outer diameter S 1 , which corresponds to the outer diameter S 1 of the embodiments of FIGS. 6 and 7 equivalent.
  • the heights h 1 and h 2 of the two sub-reflectors 13 c and 13 d are presently identical and correspond z. B. the height of the reflectors of FIGS. 6 and 7 ,
  • the peculiarity here is that a portion of the inner surface 35 of the subreflector 13c with numerous segments 41 a, 41 b is provided, which serve a special light control.
  • the majority of the inner surface 35 of the sub-reflector 13c is formed smooth and occupied only a peripheral segment 42 in the manner of a circumferential angular range with facets.
  • this segment can serve to replace a reflector blade required according to the prior art in order to direct light components, as illustrated by the light beam 28a, 28b, into an area relatively close to the top side 32 of the ceiling wall D.
  • the faceted peripheral area 42 of the inner side 35 of the reflector 13c of the illumination also serves ceiling-near wall areas.
  • Fig. 9 and Fig. 9a in that a symmetrical design with respect to two mirror planes can also be achieved, such that two circumferential angle regions 42a and 42b of the inner surface 35 of the reflector 13d are occupied by numerous segments.
  • the surface of the segments is highly reflective and each individually shaped, in particular, is curved.
  • the different reflectors 13c and 13d can be combined and used in combination with otherwise identical components 11 and 12.
  • All embodiments according to the FIGS. 10 to 15 have the same external dimensions.
  • the outer diameter W 1 , W 2 , W 3 is the same in all diffuser elements 12a, 12b, 12c.
  • the peak heights m 1 , m 2 , m 3 are identical in all three embodiments.
  • the diffuser element 12 is substantially dome-shaped, d. H. formed curved and consists 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 may be provided with a particular structure, e.g. B. be roughened or be frosted in another way.
  • the material itself, z. B. due to its structure, provide a matted transmissivity or cause a diffusive light scattering.
  • FIGS. 10 to 15 show that in a first embodiment of a diffuser element 12a, the diffuser element is matted as a whole.
  • an outer narrow edge region 29 of the diffuser element 12b is frosted and the inner central region 30 is not frosted, that is to say it is clearly formed.
  • FIGS. 14 and 15 is the frosted annular portion 29 in comparison to the embodiment of FIGS. 12 and 13 formed larger area and the inner, clearly held central area 30 with respect to the embodiment of FIGS. 12 and 13 formed smaller area.
  • the three diffuser elements 12a, 12b, 12c can be combined with identical top reflectors 11, light sources 14 and bottom reflectors 12, but due to the different matting provide for different lighting properties of the lamp 10.
  • the diffuser element 12a provides for use in a luminaire according to Fig. 1 for a very wide distribution of light.
  • Such a lamp is particularly suitable, for example, for use in normal room heights.
  • 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.
  • a diffuser element 12 c according to the FIGS. 14 and 15 Can be used in a luminaire according to Fig. 1 a focal point of gravity can be achieved under the luminaire.
  • the diffuser element 12 is like this Fig. 1 shows, advantageously arranged in the region of a light exit opening 18 of the upper reflector 11.
  • the diffuser element may also have a pointed cone or surface configuration.
  • An attachment of the essential lighting components 11, 12, 13 of the lamp 10 can be carried out either in a direct manner such that the three elements are fastened together.
  • a handling unit can be achieved, which is set in total on the lamp housing 16.
  • each of the three parts 11, 12, 13 are fixed relative to the lamp housing 16.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP10010248A 2009-10-13 2010-09-23 Luminaire pour illumination d'une surface d'un édifice Withdrawn EP2312201A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910049301 DE102009049301A1 (de) 2009-10-13 2009-10-13 Leuchte

Publications (1)

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EP2312201A2 true EP2312201A2 (fr) 2011-04-20

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Application Number Title Priority Date Filing Date
EP10010248A Withdrawn EP2312201A2 (fr) 2009-10-13 2010-09-23 Luminaire pour illumination d'une surface d'un édifice

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EP (1) EP2312201A2 (fr)
DE (1) DE102009049301A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013041273A1 (fr) * 2011-09-22 2013-03-28 Osram Opto Semiconductors Gmbh Élément optique et luminaire doté d'un élément optique
EP3312502A1 (fr) * 2016-10-18 2018-04-25 Mass Technology (H.K.) Limited Réflecteur pour la source lumineuse et dispositif d'éclairage le comprenant
EP3889499A1 (fr) * 2020-03-30 2021-10-06 Zumtobel Lighting GmbH Luminaire pourvu de source lumineuse et système optique associé

Citations (7)

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Publication number Priority date Publication date Assignee Title
DE19632665A1 (de) 1996-02-05 1997-08-07 Erco Leuchten Reflektorleuchte mit einem mindestens eine rotationssymmetrische oder zylindrische Reflektorfläche aufweisenden Reflektor
DE102004042915A1 (de) 2004-09-02 2006-03-23 Erco Leuchten Gmbh Leuchte zur Ausleuchtung von Gebäudeflächen oder Gebäudeteilflächen
DE102005022054A1 (de) 2005-05-09 2006-11-16 Erco Leuchten Gmbh Leuchte
DE102007035528A1 (de) 2007-07-26 2009-01-29 Erco Leuchten Gmbh Leuchte
DE102007035396A1 (de) 2007-07-26 2009-01-29 Erco Leuchten Gmbh Leuchte
DE102008056103A1 (de) 2008-11-06 2010-05-12 Erco Gmbh Leuchte
DE102008063370A1 (de) 2008-11-06 2010-05-20 Erco Gmbh Leuchte

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19632665A1 (de) 1996-02-05 1997-08-07 Erco Leuchten Reflektorleuchte mit einem mindestens eine rotationssymmetrische oder zylindrische Reflektorfläche aufweisenden Reflektor
DE102004042915A1 (de) 2004-09-02 2006-03-23 Erco Leuchten Gmbh Leuchte zur Ausleuchtung von Gebäudeflächen oder Gebäudeteilflächen
DE102005022054A1 (de) 2005-05-09 2006-11-16 Erco Leuchten Gmbh Leuchte
DE102007035528A1 (de) 2007-07-26 2009-01-29 Erco Leuchten Gmbh Leuchte
DE102007035396A1 (de) 2007-07-26 2009-01-29 Erco Leuchten Gmbh Leuchte
DE102008056103A1 (de) 2008-11-06 2010-05-12 Erco Gmbh Leuchte
DE102008063370A1 (de) 2008-11-06 2010-05-20 Erco Gmbh Leuchte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013041273A1 (fr) * 2011-09-22 2013-03-28 Osram Opto Semiconductors Gmbh Élément optique et luminaire doté d'un élément optique
EP3312502A1 (fr) * 2016-10-18 2018-04-25 Mass Technology (H.K.) Limited Réflecteur pour la source lumineuse et dispositif d'éclairage le comprenant
EP3889499A1 (fr) * 2020-03-30 2021-10-06 Zumtobel Lighting GmbH Luminaire pourvu de source lumineuse et système optique associé

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