EP2090823A1 - Light for lighting building surfaces - Google Patents

Abstract

The light (10) has a light housing (26) in which a shell-shaped reflector element (11) formed symmetrically around a central longitudinal axis (M) in relation to its external structural shape, is arranged. The light housing has a pivot bearing for the reflector element to enable a rotation of the reflector element around its central longitudinal axis. A device is provided on the light housing for a rotational lock (30) of the reflector element, which secures an adjusted rotary position of the reflector element relative to the light housing.

Description

The invention relates to a luminaire for illuminating building surfaces according to the preamble of claim 1.

From the German patent application DE 10 2004 042 915 A1 the applicant is a luminaire for illuminating building surfaces, in which a cup-shaped and with respect to its outer shape around a central longitudinal axis substantially rotationally symmetrical trained reflector element is described. The inside of the reflector element is to achieve a homogeneous, rotationally symmetrical light distribution of the building surface with numerous segments, so-called facets occupied. Each segment has an individually calculated surface and has been optimized in complex computer simulations in terms of its surface shape.

In the German patent application DE 10 2007 035 528 A1 , the German patent application DE 10 2007 035 396 A1 as well as the German patent application DE 10 2007 044 963 A1 , all of which go back to the applicant and represent the post-published prior art, lights are described according to the preamble of claim 1. Here, reflector elements are each arranged in a luminaire housing, which have a substantially rotationally symmetrical outer design, but with which non-rotationally symmetric light distributions on a building surface can be achieved.

To avoid repetition and also for the purpose of reference, including to individual features, hereby the content of the aforementioned prior patent application and the contents of the three copending patent applications of the Applicant are included in the content of the present patent application.

The invention has the object of providing a lamp according to the preamble of claim 1 such that a comfortable and safe operation is possible.

The invention solves this problem with the features of claim 1, in particular with those of the characterizing part, and is accordingly characterized in that the lamp housing has a pivot bearing for the reflector element to allow rotation of the reflector element about its central longitudinal axis, and that on the lamp housing a device for rotational locking of the reflector element is arranged, which secures a set rotational position of the reflector element relative to the lamp housing.

The principle of the invention is to ensure a rotatability of the reflector element in a pre-assembly position on the lamp housing, wherein the reflector element is rotatable about its central longitudinal axis in its pre-assembly position. As a result, the non-rotationally symmetrical light distribution can be aligned on the building surface. Subsequently, the desired, set rotational position can be determined and secured in this way by the device for rotational locking of the reflector element. This makes a particularly comfortable handling and adjustment possible. At the same time, the device for rotational locking ensures a permanent retention of the set position, so that no readjustment is required.

The invention relates to any luminaire for the illumination of building surfaces. This also lights are understood, the building part surfaces or external surfaces, possibly also objects, such as paintings or statues illuminate.

The luminaire according to the invention comprises a luminaire housing of any design. Preferably, the lamp housing is formed from a dimensionally stable, such as metallic material and takes up the reflector element completely. Further preferably, the reflector element is completely arranged in the mounted state within an envelope of the lamp housing and does not protrude out of the lamp housing.

Within the lamp housing, a reflector element can be arranged. The reflector element has an outer shape or wall which has a shell shape. The design of the reflector element is met with respect to its basic shape substantially rotationally symmetrical about its central longitudinal axis. In cross section, the reflector element preferably has a substantially parabolic shape. It extends from a crest area to a free edge or collar. In the region of the free edge, that is close to the light exit point, the reflector element has, for example, a flange-like, peripheral, surrounding the light exit opening collar, which can also serve to attach the reflector element on the lamp housing. In the apex area is an insertion opening for a light source, i. for a lamp, provided.

On the highly reflective inside of the reflector element a plurality of segments is arranged. The segments preferably each have a convex surface directed toward the interior of the reflector element. The surfaces of the individual segments are individually curved differently in order to achieve a desired, not rotationally symmetrical about the central longitudinal axis of the reflector element formed light distribution on the building surface can. The arrangement of the segments can for example be made such that identically formed segments are arranged in a non-rotationally symmetrical manner along the inner surface of the reflector element.

It can also be provided that only some peripheral portions of the inside of the reflector element are occupied by segments, while the remaining portions of the inner surface of the reflector element are smooth or at least left free of segments.

Alternatively and preferably, the entire inside of the reflector element is occupied by segments, different segments being provided along different circumferential regions of the inner circumferential surface of the reflector element, for example with differently curved surfaces, different sizes, different radii or different arrangement patterns.

In the mounted state, the illuminant penetrates a passage opening in the apex region of the reflector element. Starting from the luminous means, at least a substantial part of the emitted light components is first reflected on the surfaces of the segments before the light components strike the building surface. Due to the individual orientation of the surfaces of the segments and the individual surface curvatures of the segments, a non-homogeneous illumination of the building surface is achieved. For example, an oval or elongated light distribution curve can be achieved. With a reflector element substantially rotationally symmetrical, outer design and an example circular light exit opening the luminaire housing, a shape deviating from the circular shape of the light distribution curve or an inhomogeneous along any contour illumination of the building surface can be achieved.

According to the invention, a rotary bearing for the reflector element is arranged on the luminaire. The rotary bearing can be any type of device that provides a rotatability of the pre-mounted on the lamp housing reflector element. As a pivot bearing, for example, shoulder surfaces or sliding surfaces come into consideration, which allow the desired rotation. The reflector element can be rotated in this way about its central longitudinal axis, preferably rotated in any 360 ° -Umfangsposition.

Preferably, the reflector element is rotatable by at least 360 ° relative to the luminaire housing.

In an alternative embodiment of the invention, the reflector element is rotatable only along a circumferential angle range, for example 90 °, relative to the luminaire housing. The rotational movement can be limited by stops on one or two sides.

According to the invention, a device for rotational locking is furthermore arranged on the luminaire. This device makes it possible to secure and lock a selected rotational position of the reflector element. The set circumferential position of the reflector element can be ensured in this way permanently maintained.

For example, when mounted on a high ceiling, lamp according to the invention, an operator, for example, standing on a high ladder, turn the pre-mounted reflector element by hand, for example, even when the lamp is turned on, and immediately observe whether the desired effect occurs on the building surface. If the desired rotational position of the reflector element or the desired rotational position of the light distribution curve on the surface of the building to be illuminated is achieved, the operator can release the reflector element and actuate the device for rotational locking for the purpose of detecting the reflector element.

For example, the means for Dreharretierung a locking screw or another, suitable clamping element or locking element comprise. In this case, the device for rotational locking preferably have a clamping surface which can bias the reflector element a counter-clamping surface.

The invention also encompasses an arrangement in which the reflector element is acted upon by one or more spring elements against a retaining collar located in front of the light exit opening. A change in the rotational position of the reflector element can, for example, take place in that the reflector element against the force of the spring element, e.g. in the light exit direction to the rear, relocated or pressed and then rotated. Once the desired rotational position is reached, the operator simply releases the reflector element so that the spring element can in turn exert force on the reflector element and in this way a set rotational position can secure the reflector element.

It is further encompassed by the invention that the reflector element is also designed to be rotatable together with a mountable to a lamp housing retaining ring or clamping ring and the lamp housing provides a pivot bearing for the clamping ring. Clamping ring and reflector element can be rotated together in this embodiment of the invention around the central longitudinal axis of the reflector element. In this case, a setting and backup of the Rotary position of the clamping ring or retaining ring relative to the fixed luminaire housing. The reflector element is not rotatable relative to the retaining ring or clamping ring in this embodiment of the invention, but only together with this rotatable.

Finally, it is conceivable that the luminaire housing comprises a releasably securable holding body, for example a clamping ring, retaining ring or mounting ring, and that the reflector element is rotatable relative to the holding body. In this case, the pivot bearing for the reflector element, e.g. also be provided by the holding body. The holding body is considered in this case as part of the lamp housing.

In particular, the holding body can also be provided by a Wechselreflektorring. As an alternating reflector ring, for example, an element is referred to, which rotatably supports the reflector element and which is detachably attachable to the lamp housing, for example, is locked in a bayonet.

The rotary bearing may comprise shoulder surfaces on which corresponding counter-shoulder surfaces of the reflector element - or a retaining ring - abut. Preferably, shoulder surfaces are provided on at least three spaced apart sites, so that a flat support along a defined plane is possible. However, shoulder surfaces can also extend in the circumferential direction around the reflector element.

On the reflector element, preferably a collar is arranged at its free edge region. The collar allows a particularly simple fixing of the reflector element to a lamp housing. Also, the provision of a collar allows a particularly simple placement of rotational position marks.

Preferably, the reflector element according to the invention is made of aluminum and has been produced by a pressing process, as described in detail in the applicant's patent applications mentioned above. This allows a particularly simple way to provide a circumferential collar on the free edge region of the reflector element.

The means for Dreharretierung may have a clamping surface with which the reflector element is clamped against a counter clamping surface. For example, the clamping surface can be arranged on a light ring in the front opening arranged clamping ring or retaining ring and the counter clamping surface on the lamp housing. For example, the clamping ring can be screwed against the housing while at the same time biasing or clamping or supporting the reflector element. The reflector element can be tensioned in this way against the counter clamping surface. For example, the collar described above can be clamped between clamping surface and counter clamping surface.

In one embodiment of the invention, the device for rotational locking on at least one spring element. This can exert a clamping force on the reflector element and secure by this force a set rotational position of the reflector element relative to the lamp housing. Under exercise of the clamping force, the reflector element can be pressed against a support surface. To cancel the Dreharretierposition one of the clamping force of the spring directed counter to this and must be exercised counterforce. Subsequently, by exerting the counterforce, the reflector element can be rotated about its central longitudinal axis until a new desired rotational position of the reflector element is achieved.

The numerous segments each have a surface that is curved toward the interior of the reflector element. The vaults of the single surface can be optimized in complex computer simulations. Preferably, each surface is curved twice. It is possible to use spherical, aspherical, or even cylindrical segment surfaces. Also, the segments may be partially undercut, as z.T. is described in the above-described post-published patent applications of the applicant.

According to one embodiment of the invention, a lamp can be arranged in the interior of the reflector element. Preferably, a single lamp can be pushed through an insertion opening in the apex region of the reflector element. Further advantageously, the lamp is a luminous means with a small discharge volume or light-emitting volume, so that it is possible to speak of a substantially punctiform light source. Further advantageously, the discharge volume or light-emitting volume of the luminous means can be arranged substantially at the focal point or near the focal point of the reflector element.

The insertion opening preferably has an inner diameter which is greater than the outer diameter of the lamp. In this way, the lamp can be fixedly held on a lamp base relative to the lamp housing, while the reflector element is rotatable about its central longitudinal axis for the purpose of aligning the light distribution. In this way, when the lamp is turned on, a rotation of the reflector element around its center longitudinal axis for the purpose of aligning the reflector element.

The invention solves the problem set beyond that with the features of claim 13.

The principle of the invention consists essentially in that the reflector element has a rotational position mark and the receiving seat for the reflector element has at least one counter-rotating position mark. The rotational position mark and the counter-rotational position mark must be brought into coincidence to allow axial insertion of the reflector element in the lamp housing. Thus, at least one defined rotational position of the reflector element is achieved relative to the lamp housing.

In this way, for example, a lighting planner can determine beforehand which position the luminaire housing must occupy. When mounting on site, the reflector element then only has to be used in such a way that the reflector element-side rotational position mark is aligned in register with the light housing-side counter-rotating position mark.

In one embodiment of this invention, a rotatability of the reflector element is excluded relative to the receiving seat. In that regard, only a single, fixed by rotational position mark and Gegendrehpositionsmarke rotational position of the Reflektoreiementes in the receiving seat is possible at all.

In an alternative embodiment of this invention, a rotatability of the reflector element relative to the receiving seat is basically not hindered by the rotational position mark and the counter-rotating position mark. Here serve rotary position mark and counter-rotating position mark only to a certain rotational position by an operator z. B. to be able to visually check.

With regard to the definition of the terms of the features of claim 13 reference is made to the above to claim 1 and the following claims valid definitions.

As a receiving seat for the reflector element in the context of the present patent application, each structure is referred to, which can hold or receive the reflector element. In particular, the region of the walls of the luminaire housing is referred to as the receiving seat, which is directly adjacent to this with the reflector element mounted and which holds, contacts or encloses the reflector element.

Also in this invention, it is again possible that the reflector element is used directly to a light housing side receiving seat and is determined by a separate holder body, retaining ring or clamping ring on the lamp housing. However, it can also be provided that the reflector element together with a holding body, e.g. with a retaining ring, is fixed to the luminaire housing. With this embodiment, a rotational position mark can also be provided on the holding body and a counter-rotating position mark on the lamp housing. Likewise, it is advantageous in this case if the reflector element and the holding body are firmly fastened to one another or at least can be fixed to one another only in a single possible relative rotational position.

As a rotational position mark on the reflector, for example, comes a groove-like recess and as Gegenrehpositionsmarke on the lamp housing comes, for example, a projecting nose into consideration, which has a shape complementary to the groove. Groove and nose can, when taking a proper rotational position of the reflector element relative to the reflector housing and an axial movement of the reflector element to be performed relative to the Luminaire housing are brought into coverage and allow in this way insertion of the reflector element and reaching the receiving seat. Are due to an improper rotational position of the reflector element relative to the lamp housing rotational position mark and Gegendrehpositionsmarke not in overlap or aligned arrangement, the reflector element in one embodiment of the invention is not movable into its receiving seat. Instead, the reflector element, for example, with its free edge region or with its collar, abut against Gegendrehpositionsmarke and prevent further axial movement of the reflector element relative to the receiving seat, and in particular the achievement of its receiving seat.

In the event that a plurality of rotational position markers or a plurality of counter rotational position markers are provided, a clocked or stepwise permitted rotation of the reflector element can be provided by the same or different sized circumferential angular ranges. For example, should a rotation of the reflector element relative to the luminaire housing only in 20 ° steps along a certain circumferential angular range of e.g. 180 °, an attachment of ten Gegenrehpositionsmarken or alternatively of ten rotational position marks is possible.

According to the invention, it is possible to mount rotational position mark and counterrotational position mark directly on the reflector element and on the luminaire housing. But it is also conceivable that the reflector element is fastened together with a clamping ring or retaining ring on the lamp housing. In this case, the rotational position mark can also be arranged on the clamping ring or retaining ring and the counter-rotation position mark on the lamp housing.

Similarly, it is possible that the counter rotation position mark on the clamping ring and the rotational position mark is attached to the reflector element. In the last variant, however, it is again assumed that the clamping or retaining ring can be fastened to the luminaire housing.

Finally, the invention relates to a reflector element according to the preamble of claim 19.

Such a reflector element is described in the above-mentioned post-published patent applications of the applicant.

The object of the invention is to further develop the reflector element described above in such a way that a comfortable and safe operation of a lamp using this reflector element becomes possible.

The invention solves this problem with the features of claim 19.

On the reflector element according to the invention, a rotational position mark can be attached, for example, in the form of a mechanical coding groove or a coding projection. It is also conceivable to provide the rotational position mark by an optically or visually recognizable element, for example by an arrow or another symbol, if appropriate also by a manufacturer's mark. For example, in the event that a plurality of reflector elements with comparable or identical light distribution characteristic ceiling side, along a wall, for example next to each other, are arranged, for the purpose of illuminating the wall, these rotational position marks can each be aligned with the wall. This will be a Particularly simple alignment of the light distribution curve of the individual lights relative to the wall possible.

Fig. 1

ein Reflektorelement in schematischer Draufsicht zur Verwendung in einer erfindungsgemäßen Leuchte,

Fig. 2

in einer schematischen, perspektivischen Darstellung ein erstes Ausführungsbeispiel einer erfindungsgemäßen, deckenseitig montierten Leuchte, die ein Reflektorelement nach Fig. 1 verwendet, und die eine Gebäudefläche ausleuchtet,

Fig. 3

in einer schematischen, teilgeschnittenen Ansicht eine Schnittdarstellung durch eine erfindungsgemäße Leuchte gemäß Fig. 2,

Fig. 4

ein alternatives Ausführungsbeispiel einer erfindungsgemäßen Leuchte in einer Darstellung gemäß Fig. 3,

Fig. 5

in einer Darstellung gemäß Fig. 1 ein Ausführungsbeispiel eines erfindungsgemäßen Reflektorelementes mit einer Drehpositionsmarke,

Fig. 6

ein Ausführungsbeispiel einer erfindungsgemäßen Leuchte mit einer Gegendrehpositionsmarke in schematischer, teilgeschnittener Ansicht,

Fig. 7

in einer schematischen, teilgeschnittenen Darstellung einen Wandungsbereich des Leuchtengehäuses der Fig. 6 etwa entlang der Schnittlinie VII - VII in Fig. 6 in einer Darstellung analog der Teilkreisdarstellung VII in Fig. 3,

Fig. 8

ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Reflektorelementes mit einer Mehrzahl äquidistant angeordneter Drehpositionsmarken, und

Fig. 9

ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Reflektorelementes mit einer 90°-Ausnehmung zur Erzeugung einer 90°-Drehbewegung.

Further advantages of the invention will become apparent from the non-cited subclaims and from the following description of the embodiments illustrated in the figures. Show:

Fig. 1

a reflector element in a schematic plan view for use in a luminaire according to the invention,

Fig. 2

in a schematic, perspective view of a first embodiment of an inventive, ceiling-mounted light, the a reflector element after Fig. 1 used, and which illuminates a building surface,

Fig. 3

in a schematic, partially sectioned view a sectional view through a lamp according to the invention Fig. 2 .

Fig. 4

an alternative embodiment of a lamp according to the invention in a representation according to Fig. 3 .

Fig. 5

in a representation according to Fig. 1 An embodiment of a reflector element according to the invention with a rotational position mark,

Fig. 6

An embodiment of a lamp according to the invention with a counter-rotating position mark in a schematic, partially sectioned view,

Fig. 7

in a schematic, partially sectional view of a wall portion of the lamp housing of Fig. 6 approximately along the section line VII - VII in Fig. 6 in a representation analogous to the pitch circle VII in Fig. 3 .

Fig. 8

a further embodiment of a reflector element according to the invention with a plurality of equidistantly arranged rotational position marks, and

Fig. 9

a further embodiment of a reflector element according to the invention with a 90 ° -Aausnehmung for generating a 90 ° rotation.

The exemplary embodiments of the luminaire according to the invention, designated in their entirety by 10, will now be explained in more detail with reference to the figures. For the sake of clarity, the description should be made that identical or comparable parts or segments are described for the sake of clarity with the same reference numerals, in some cases also with the addition of small letters. This also applies to different embodiments for simplicity.

The luminaire 10 according to the invention, as shown for example in the Fig. 2 . 3 and 4 is indicated, comprises a reflector element 11. This is first with reference to the Fig. 1 and 3 explained.

The reflector element 11 is substantially cup-shaped and has a substantially rotationally symmetrical about the central longitudinal axis M outer shape or basic shape. As can be seen in particular from the cross-sectional illustration Fig. 3 shows, the reflector element 11 has a substantially parabolic cross-section, wherein the focal point of the parabola is designated B. In the region of the free edge 14, the reflector element with a circumferential and substantially perpendicular to the central longitudinal axis M protruding flange collar 13 is provided. In the region of its central longitudinal axis M, the reflector element has an insertion opening 12 with an inner diameter IN. The passage opening 12 is arranged in the apex region S.

On its inner side 16, the reflector element 12 is provided with numerous segments 15, 15a, 15b, 15c, 15d, 15e, 15f, 15g. The segments are e.g. arranged along columns and along rows. The columns each extend from the free edge region 14 in the direction of the central longitudinal axis M. The rows run concentrically around the imaginary circle center M.

Fig. 1 illustrates that numerous segments 15a, 15b, 15c, etc. are each arranged to form a column. Other segments designated 15d, 15e, 15f and 15g belong to a row extending circumferentially about the central longitudinal axis M.

Fig. 1 illustrates that the inner side 16 of the reflector element 11 along the circumferential angular range α of about 120 °, as the viewer already reveals at first glance, equipped with a different type of segments than the rest of the inner surface 16 of the reflector element 11. In In this area, the segments are arranged narrower and have correspondingly smaller surfaces.

This illustration is intended to indicate, by way of example only, that a non-rotationally symmetrical light distribution is to be achieved with the reflector element 11 despite the essentially rotationally symmetrical basic shape due to the particular design and arrangement of the individual segments 15a, 15b, 15c, 15d, 15e, 15f. This will be explained below with reference to Fig. 2 be explained.

Fig. 2 shows in a perspective view of a building room with a ceiling 17 mounted on the lamp according to the invention 10. The lamp 10 is according to Fig. 2 designed as a spotlight and, for example, about a perpendicular to the ceiling 17 extending axis A pivotally. Similarly, the lamp 10 can be retargeted to an indicated bracket 22, z. B. in the form of a retaining clip, and a perpendicular to the plane of the paper Fig. 2 run and be pivotable about X designated further axis. Preferably, the rotational movements of the lamp 10 about the axes A and X can be locked.

It should be noted, however, that the luminaire according to the invention does not necessarily have to be rotatably mounted relative to a mounting surface, but, for example in the case of a downlight, can also be arranged fixedly to the mounting surface or building surface.

With the lamp 10, a light distribution 23 is to be generated on the building wall 19. Alternatively, it is also conceivable, for example, for the other building walls 20, 21 or alternatively also the floor surface 18 to be illuminated. Finally, the lamp 10 may also be attached to the bottom or wall side and illuminate, for example, a ceiling wall or another building wall. Finally, it should be noted only for the sake of completeness that it does not depend on the type or location of attachment of the lamp 10.

Due to the non-rotationally symmetrical design or arrangement of the segments 15 on the inner side 16 of the reflector element 11, the light distribution 23 is not, as would be expected in a continuously smooth inner surface 16 of a reflector element, homogeneous, but you can see how in Fig. 2 dashed and dashed lines indicated, not rotationally symmetric contours. For the sake of simplicity, it is assumed that with the aid of a suitable light source and the reflector element 11 according to FIG Fig. 1 with the Luminaire 10 a in Fig. 2 dashed lines, substantially elongated oval trained light distribution curve 24 is projected onto the building surface 19. The light distribution curve 24 is intended to make clear that the area section within the light distribution curve 24 is illuminated homogeneously and brightly, whereas the area of the building surface 19 of the light fixture 10 which is outside the dashed curve is practically not or not appreciably illuminated.

As the viewer of the Fig. 2 is readily apparent, the light distribution curve 24, based on the Fig. 1 , oriented substantially vertically. In certain applications, it may be desirable to rotate the light distribution curve 24 such that an in Fig. 2 dotted light distribution curve 25 is achieved on the building surface 19. For this purpose, the reflector element 11 in the housing 26 of the lamp 10, for example, rotatably arranged. This should be based on the 3 and 4 will be explained below.

Fig. 3 shows in a very schematic, partially cross-sectional representation by way of example. Luminaire housing 26 of a luminaire 10 according to the invention. The housing comprises a bottom wall 27 and side walls 28. The luminaire housing 26 may, for example, have a substantially circular cross-section and a hollow-cylindrical design. In the interior of the lamp housing 26, a lamp base 36 and a lamp 35 are arranged. The pedestal 36 is what Fig. 2 not shown, fixed relative to the housing 26 mounted. Electrical leads 37 are merely indicated and can supply the lamp 10 from the outside with an operating voltage and possibly also with signal or control data.

The luminous means 35 has an outer diameter AU, which is smaller than the inner diameter IN of the insertion opening 12. The luminous volume of the preferably punctiform Light source 35 is disposed at or near the focal point B of the reflector element 11.

In the area of re Fig. 3 upper, free edge of the lamp housing 26, an inwardly projecting flange 29 is provided. On the flange 29 of the collar 13 of the reflector element 11 is located. The reflector element is rotatable about its central longitudinal axis M. The flange top 38 contacts the collar underside 39 and thus provides a sliding surface or pivot bearing surface for the reflector element 11. The flange 29 provides so far a pivot bearing for the reflector element ready.

In the region of the free edge of the light-emitting housing 26, an external thread 31 is arranged. This can cooperate with an internal thread 32 of an annular body 30. The ring body 30 has a holding portion 40 which engages over the collar 13 of the reflector element. As a result of a screwing of the ring body 30 by rotation about the central longitudinal axis M by the interaction of its internal thread 32 with the external thread 31 of the lamp housing 26, the ring-side clamping surface 33 is continuously moved to the flange-side counter clamping surface 34. By contacting of clamping surface 33 and collar 13 of the collar 13 of the reflector element 11 between the ring body 30 and the flange 29 is clamped. When clamped reflector element 11 are in Fig. 3 indicated gap distances between the holding portion 40 and the collar 13, or between the collar 13 and the flange 29, repealed.

When dissolved or loosened annular body 30, the reflector element 11 can be rotated about its central longitudinal axis M. The holding portion 40 of the annular body 30 already prevents falling out of the reflector element 11 out of the lamp housing 26 and thus secures already a pre-assembly of the Reflector element 11 on the lamp housing 26. The last employed consideration is understandable when it is clear that Fig. 3 only one of several, different possible installation situations shows. For example, in the case of a ceiling-side mounting according to Fig. 2 the reflector element 11 fall out of the lamp housing 26. This effectively prevents the holding portion 40 of the ring body 30. Is after carrying out the rotation of the reflector element 11 reaches the desired light distribution curve 25 on the building wall 19 to be illuminated, the ring body 30 can be screwed and the reflector element 11 are clamped in this manner. As a result, the achieved rotational position of the reflector element 11 is secured.

In the case of a desired repositioning, the ring element 30 merely has to be loosened, the reflector element 11 has to be rotated, and the ring element 30 has to be screwed in turn.

The reflector element 11 has an outer diameter MA, which is at least slightly smaller than the inner diameter MI of the lamp housing 26. The reflector element is so far, with dissolved annular body 30, in the insertion direction E in the receiving seat, which is provided by the shoulder surface 34, used.

An alternative embodiment of a luminaire according to the invention is illustrated Fig. 4 : Here, a spring element 41 is disposed between the flange 29 and the collar 13 of the reflector element 11. The spring element 41 is designed as a compression spring and biases the collar 13 of the reflector element 11 with the flange top 38 against the holding portion 40 of the annular body member 30. The dashed line 42 is merely intended to clarify that the annular body 30 is detachably formed by the remaining component of the housing 26. However, here is not necessarily a gland or another Mounting method required, which requires a deadlock. Instead, for example, an arbitrarily formed releasable attachment, eg in the manner of a latching connection, find application here.

Finally, it is also possible, the reflector element not in the insertion direction E, as in the embodiment of Fig. 3 provided, but to insert from the opposite side in the luminaire housing. For this purpose, however, the flange 29 must be designed to be spread outward or radially displaceable or detachably fastened.

The operation of the lamp 10 according to Fig. 4 is as follows:

The reflector element 11 can be slightly displaced by applying pressure in the direction of pressure D against the force of the springs 42, so that the collar 13 can be at least slightly removed from the holding portion 40. Anschießend the reflector element 11 can be rotated about its central longitudinal axis M until the desired orientation of the light distribution curve 25 is realized on the building wall 19. By releasing the reflector element 11, the springs 42, the reflector element 11 now act against the pressure direction D again and press the collar 13 against the holding portion 40. The set rotational position of the reflector element 11 can be secured in this way and permanently maintained.

It should be noted that Fig. 4 merely for purposes of explanation, two spring elements 41 shows. Of course, the number of spring elements does not matter. Also, of course, tension spring elements can be used instead of compression springs or coil springs. Finally, the spring force of a compressible material, such as a soft rubber elastic bead or another suitable, compressible and restoring forces exerting element.

Fig. 5 shows a reflector element 11 according to the invention in a representation according to FIG Fig. 1 , wherein here a rotational position mark 43 is provided. This is made in the manner of a cross-sectionally triangular Nutausnehmung in the collar 13 of the reflector element 11.

Fig. 6 shows the associated luminaire housing 26 with indicated lamp base 36 and illuminant 35 in a plan view. This view arises, for example, if one looks in the direction of the viewer of the Fig. 3 in the insertion direction E imagines the lamp housing 26, wherein the reflector element and the retaining ring 30 are omitted and it should be noted that it is in the lamp housing in Fig. 6 of course, a different light housing than that of Fig. 3 is.

According to Fig. 6 is the support shoulder, which is formed by the radially inwardly projecting from the housing wall 28 flange 29 is in Fig. 6 hatched shown. The hatching should only clarify a viewing area and no cutting area.

At the bottom of the Fig. 6 is mounted as Gegendrehpositionsmarke a radially inwardly projecting projection 44. In the manner of a coding nose this can cooperate with the groove-like recess 43 of the reflector element 11. Will the reflector element of Fig. 5 in the interior of the lamp housing 26 of the Fig. 6 used, the proper receiving seat, so the support shoulder 29, can only be achieved when the groove 43 and the projection 44 are brought into coincidence. Thus, the circumferential rotational position of the reflector element 11 is defined or clearly defined relative to the lamp housing.

For clarity, it should be noted that Fig. 7 the embodiment of Fig. 6 in an enlarged partial sectional view along section line VII-VII in Fig. 6 shows. This representation corresponds to that of the embodiment of Fig. 3 or of the designated there with VII subcircle. In the Fig. 3 shown external thread assembly 31 and the separate ring body 30 are in the other embodiment of the Fig. 7 but not shown. However, a thread or a ring body 30 can equally in an embodiment of the Fig. 5 to 7 be provided.

As a result of the design of the reflector element 11 with a rotational position mark 43 and the configuration of the lamp housing 26 with a Gegenrehpositionsmarke 44, the applicability of the reflector element 11 in the lamp housing 26 is possible only in a single rotational position. Thus, in the event that a certain rotational orientation of a light distribution curve 25 is already predetermined, a distinctive insertion of the reflector element can be ensured.

Fig. 8 illustrated in a second embodiment of a reflector element 11 according to the invention analogous to Fig. 5 in that a plurality of rotational position marks 43a, 43b, 43c, 43d, 43e, 43f, 43g can be provided on the reflector element 11. These equidistant rotational position marks provided in 30 ° -Winkein allow the insertion of the reflector element 11 according to Fig. 8 in a lamp housing 26 according to Fig. 6 in eight different rotational positions. Fig. 8 illustrates that the reflector 11 according to Fig. 8 along a circumferential angle range of 180 ° in 30 ° steps can be used. The number of rotational position marks 43a, 43b, 43c, 43d, 43e, 43f, 43g on the reflector element 11 and the angular distance set the variability of Usability of this reflector fixed. Even smaller or different angular steps are possible if required.

Fig. 9 Finally, shows a further embodiment of a reflector in a representation according to Fig. 8 , Here, a rotation is provided by a 90 ° angle. For this purpose, a 90 ° recess 45 is arranged in the collar 13 of the reflector element 11. The reflector element 11 according to Fig. 9 is in a lamp housing 26 according to Fig. 6 can be used and rotatable only along a 90 ° angle range.

Of course, the recess 45 may extend along any circumferential angular range. It is also possible that on the reflector element 11 a plurality of recesses 45 extending along a circumferential angle range are provided, which allow rotation within a certain angle within limited pivot stops.

From the above descriptions, it will be understood that the rotational position mark may be attached to the ring body 30, for example, and cooperate with a light-case-side counter-rotational position flag 44. Finally, it is also possible that the ring body 30 and the lamp housing 26 are fastened to each other only in a single predefined relative circumferential orientation. In this case, it may be provided that the reflector element 11 is provided with a rotational position mark and the ring body 30 is provided with a counter-rotating position mark.

Finally, it should be noted that a sectional view of the reflector element 11 according to Fig. 3 both when looking at the section line III-III in Fig. 1 and, for example, when looking at the section line IIIa-IIIa in Fig. 1 can result. Fig. 3 designates, by way of example, three segments 15a, 15b, 15c, whose facing towards the interior Surfaces reflect the light emitted by the light source 35 and direct light onto the building surface 19 to be illuminated. Depending on how the surface of the individual segments 15a, 15b, 15c is arranged, the light is reflected differently. Each surface of each individual segment 15a, 15b, 15c is calculated individually and may differ from the surface of an adjacent segment.

It should also be noted that Fig. 1 as described above, along the circumferential angular range α, shows a different segmental arrangement than in the remaining circumferential angular range. Even if the observer does not discern differences at first glance in the reflector curvatures, ie at the first glance uniform design of the inside of the reflector element, the surfaces can be configured differently such that a non-rotationally symmetrical light distribution on the reflector element Achieve building surface.

It should also be noted that in the embodiments of the 3 and 4 provided retaining rings or retaining body 30 are detachably fastened to the lamp housing 26 and ensure a pre-mounting position of the reflector element 11 on the lamp housing in the attached state. This is possible because the annular body 30 each has a holding portion 40 which secures the reflector element axially.

Finally, it should be noted that a rotational position mark 43 can also be arranged on the luminaire housing and a counterrotation position mark 44 on the reflector element. For example, a recess 43 can also be arranged on the luminaire housing and a corresponding nose or projection 44 on the reflector element.

Finally, it is provided in an embodiment, not shown, that the reflector element is rotatably mounted in its receiving seat. The rotation can be unlimited, d. H. be more than 360 °, approved or limited by rotation stops. In this embodiment, not shown, a reflector element-side rotational position mark and a housing-side Gegenrehpositionsmarke are provided despite permitted rotation of the reflector element relative to its housing-side receiving seat. These may be provided, for example, as a purely visually recognizable brands that can be brought into conformity by an operator, without preventing the rotation of the reflector element.

Claims (19)

Luminaire (14) for illuminating building surfaces (19), comprising a luminaire housing (26), in which a cup-shaped reflector element (11), which is essentially rotationally symmetrical with respect to its outer design about a central longitudinal axis (M), is arranged, whose inner side (16) to achieve a non-rotationally symmetrical light distribution on the building surface with numerous segments (15, 15a, 15b, 15c, 15d, 15e, 15f, 15g) is occupied, characterized in that the lamp housing has a pivot bearing (29) for the reflector element to a rotation of the reflector element about its central longitudinal axis to allow, and that on the lamp housing, a means for Dreharretierung (30) of the reflector element is arranged, which ensures a set rotational position of the reflector element relative to the lamp housing. Luminaire according to claim 1, characterized in that the pivot bearing shoulder surfaces (34). Luminaire according to claim 2, characterized in that shoulder surfaces (34) are provided at at least three spaced-apart locations. Luminaire according to one of the preceding claims, characterized in that the reflector element (11) comprises a free edge region (14) on which a collar (13) is arranged. Luminaire according to one of the preceding claims, characterized in that the device has a clamping surface (33), with which the reflector element (11) against a counter clamping surface (34) can be tensioned. Luminaire according to one of the preceding claims, characterized in that the device has at least one spring element (41) for exerting a clamping force. Luminaire according to claims 4 and 5, characterized in that in the secured rotational position of the reflector element (11) of the collar (13) between the clamping surface (33) and the counter-clamping surface (34) is arranged. Luminaire according to one of claims 5 to 7, characterized in that the clamping surface (33) or the counter clamping surface (34) provided by a releasably connectable to the lamp housing (26) element (30). Luminaire according to one of the preceding claims, characterized in that the segments (15) each have a to the interior of the reflector element (11) towards arched surface. Luminaire according to one of the preceding claims, characterized in that in the interior of the reflector element (11) a lamp (35) can be arranged. Luminaire according to one of the preceding claims, characterized in that in the apex region (S) of the reflector element (11) an insertion opening (12) is arranged for the lamp. Luminaire according to claim 11, characterized in that the insertion opening (12) has an inner diameter (IN) which is greater than the outer diameter (AU) of the lamp (35). Luminaire (10) for illuminating building surfaces (19), comprising a luminaire housing (26) with a receiving seat (29), in a cup-shaped and with respect to its outer shape about a central longitudinal axis (M) is substantially rotationally symmetrical reflector element (11) is arranged, the inside (16) to achieve a non-rotationally symmetric light distribution on the building surface with numerous segments (15) is occupied, characterized characterized in that the reflector element (11) has at least one rotational position mark (43, 43a, 43b, 43c, 43d, 43e, 43f, 43g) and the receiving seat (29) has at least one counterrotation position mark (44) relative to a defined rotational position of the reflector element to reach the luminaire housing. Luminaire according to Claim 13, characterized in that the reflector element (11) is movable into its receiving seat (29) only when it assumes a rotational position relative to the luminaire housing (26), in which rotational position mark (43) and counterrotational position mark (44) are in alignment. Luminaire according to claim 13 or 14, characterized in that the rotational position mark on a free edge region (14) of the reflector element (11), in particular on a collar (13) of the reflector element, is arranged. Luminaire according to one of claims 13 to 15, characterized in that the rotational position mark (43) or the counter rotating position mark (44) by a groove (43) or by a projection (44) are formed. Luminaire according to one of claims 13 to 16, characterized in that a plurality of rotational position marks (43, 43a, 43b, 43c, 43d, 43e, 43f, 43g) and / or a plurality of counter-rotation position marks (44) are provided. Luminaire according to claim 17, characterized in that a plurality of rotational position marks (43a, 43b, 43c, 43d, 43e, 43f, 43g) and / or a plurality of counter-rotation position marks (44) are arranged equidistant from each other. Reflector element (11), which is formed substantially cup-shaped and with respect to its outer shape around a central longitudinal axis (M) is substantially rotationally symmetrical, with an inner side (16) on which to achieve a non-rotationally symmetric light distribution numerous segments 15, 15a, 15b , 15c, 15d, 15e, 15f, 15g), characterized in that in the region of the free edge (14) of the reflector element (11) at least one rotational position mark (43, 43a, 43b, 43c, 43d, 43e, 43f, 43g ) is arranged.

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