AT16738U1 - Arrangement for light emission - Google Patents

Abstract

The invention relates to an arrangement for emitting light with a plate-shaped light-guiding element (25) which is designed to emit light via at least one flat side, the light-guiding element (25) having a recess or opening in which an illumination unit (50) is arranged, which first illuminant which are designed to emit light separately from the light guide element (25), and wherein further illuminants (90, 91) are provided and arranged in such a way that light which is emitted by these further illuminants (90, 91) is transmitted via a Edge surface (26) of the recess or opening enters the light-guiding element (25) and through which at least one flat side is released.

Description

description

LIGHT DELIVERY ARRANGEMENT

The present invention relates to an arrangement for light emission, with the help of which light can be emitted in different ways.

In lighting technology, different types of light emission are often combined with one another in order to achieve particularly appealing lighting, for example in a specific area, but at the same time also to provide lighting that allows, for example, working or reading documents or else the targeted lighting of a specific object. A sufficiently high brightness should be available, especially for the latter cases, the corresponding requirements for lighting, for example for work purposes, also being specified by corresponding DIN standards. In the area to be illuminated, not only should there be sufficient brightness, but the light should also fall onto the area to be illuminated from certain predetermined directions or be emitted by the associated luminaire at certain angles, for example to avoid glare and / or disturbing reflections Avoid screen surfaces or the like. For lighting of this type, which is often also referred to as task lighting, the light is usually bundled and directed toward the area to be illuminated or the object to be illuminated.

[0003] On the other hand, such a highly directed light emission is often perceived as less appealing. Among other things, this is by the fact that under certain viewing angles for an observer when looking at the light-emitting luminaire it is often impossible to tell whether the luminaire itself is activated or not. It can then occur that a work place below a lamp is indeed sufficiently illuminated, but for an observer in the room the room appears rather dark.

It is therefore often provided, in addition to the directional light output to make a large-area, rather diffuse lighting, with the help of which, for example, the ceiling area or areas of the lamp located above the means for the directional light emission appear bright from the side thereof. This can be done by separate luminaires separate from the luminaires responsible for direct light emission, or luminaires are used in which both types of light emission are combined with one another.

In the event that both types of light output are to be realized together by a single lamp, different solutions are known from the prior art. The object of the present invention is to further develop these known solutions, so that in a particularly elegant way a possibility is created to implement both types of light emission.

The object is achieved by an arrangement for emitting light, which has the features of claim 1. Advantageous developments of the invention are the subject of the dependent claims. Furthermore, the object is also achieved by a lighting unit according to claim 10.

The solution according to the invention is based on the idea of realizing the large-area light emission with the aid of a plate-shaped light-guiding element. This is known per se from the prior art. According to the present invention, however, provision is now made to integrate the means provided for the other type of light emission into the light guide element. For this purpose, this has a recess or opening in which an illumination unit is arranged, with the aid of which light can be emitted separately from the light-guiding element. Other illuminants, on the other hand, are arranged in such a way that the light that is emitted by them first enters the light-guiding element via an edge surface of the recess or opening and is emitted via at least one flat side of the light-guiding element.

According to the present invention, an arrangement for light emission is therefore proposed, with a plate-shaped light guide element which is designed for light emission via at least one flat side, the light guide element having a recess or opening in which a lighting unit is arranged which has first lamps , which are designed to emit light separately from the light-guiding element, and wherein further illuminants are provided and arranged in such a way that the light which is emitted by these further illuminants enters the light-guiding element via an edge surface of the recess or opening and via the at least one Flat side is delivered.

Characterized in that according to the invention the lighting unit provided for direct or directional lighting is integrated into the light-guiding element, a combination of both types of light emission can be achieved in a particularly appealing manner. In particular, the effect is achieved in a simple but advantageous manner that the area over which the directed light is emitted is completely surrounded by a large-area illuminated area.

The first illuminants provided in the lighting unit can be part of a spotlight, which is particularly preferably adjustable. In particular, a gimbal mounting of the spotlight can be provided for this purpose, which enables it to be directed freely at an area to be illuminated.

The attachment of the lighting unit to the light guide element takes place according to a preferred embodiment of the invention by ring-like fastening elements, between which the light guide element is received by clamping in the assembled state of the lighting unit. It can in particular be provided that the further illuminants, via which light is to be coupled into the light-guiding element, are also part of the lighting unit. For this purpose, it can in particular be provided that the further illuminants are distributed around the circumference of one of the ring-like fastening elements and are arranged facing the edge surface of the recess of the light-guiding element. This solution opens up the possibility of carrying out a suitable positioning of the illuminants responsible for both types of light emission in a particularly simple manner. Ultimately, only a correspondingly designed lighting unit according to the invention has to be mounted on the light guide element. These further illuminants can be, in particular, LEDs or LED boards, it being possible to improve the coupling of light into the light-guiding element that the fastening elements are designed to be reflective in their area receiving the light-guiding element or are provided with a reflector.

According to a further advantageous development of the invention it can be provided that the planar light emission is additionally achieved by a suitable, translucent and preferably diffusely scattering cover, which spans at least that flat side of the light-guiding element via which the light is emitted. This measure proves to be particularly advantageous if the lighting unit has a light exit opening which is provided for direct or directed light emission and which protrudes from the plane of the light guide element. In this case, it can then be provided that the cover extends from the peripheral region of the light-guiding element to the light exit opening, so that a particularly appealing and harmonious surface design of the arrangement as a whole is achieved, despite everything still giving off light in the two desired ways is made possible. In this case, the advantageously provided cover can be formed from a so-called bidirectionally flexible textile material which is braced with the various units of the arrangement in the manner described above and thereby ensures a particularly appealing surface design. However, the concept according to the invention would also be feasible without such an additional cover, in which case the planar light emission takes place directly through the light guide element.

Of course, the arrangement according to the invention for emitting light can have a plurality of recesses or openings in the light-guiding element, in each of which a corresponding lighting unit is then arranged. There is great freedom in this regard

with regard to the implementation of the arrangement according to the invention, so that ultimately a wide variety of lighting tasks can be performed. It can also be provided that the illuminants responsible for the different light outputs can be operated separately from one another and accordingly, for example, the directional light output can be adjusted in terms of its intensity independently of the large-area light output. An individual setting of the color or color temperature can also be provided.

According to the invention, a lighting unit for use with a plate-shaped light-guiding element is also proposed, the lighting unit comprising:

Means for fastening in a recess or opening of the light-guiding element,

- First illuminants, which are designed to emit light separately from the light-guiding element, and

- Further illuminants, which are arranged in such a way that light which is emitted by these further illuminants enters the light-guiding element via an edge surface of the recess or opening.

The invention will be explained in more detail with reference to the accompanying drawing. Show it:

[0019] Figure 1 is a lamp that includes an arrangement for emitting light according to the invention;

Figure 2 shows the lamp of Figure 1 without the cover realized by the flexible covering material of the lamp body;

Figures 3 and 4 further views of the lamp without the covering, here the arrangement according to the invention for emitting light is particularly well recognizable;

Figure 5 is an enlarged view in which the attachment of the covering material can be seen;

[0023] FIG. 6 shows a sectional illustration to illustrate the fastening of a lighting unit in an opening of the light-guiding element;

Figure 7a to 7e different views of a lighting unit according to the invention and

Figures 8 to 10 representations to illustrate the edge region of the framework structure of the lamp, in which the attachment of the covering material and the suspension of the lamp can be seen.

Figure 1 shows a generally designated by the reference numeral 1 lamp, in which the inventive concept is used. In the exemplary embodiment shown, the luminaire 1 is designed as a pendant luminaire, since here - as can be clearly seen from the description below - the advantages of the solution according to the invention are particularly effective. In spite of everything, it would also be conceivable to implement the present invention in the form of other types of luminaires, for example as a surface-mounted or recessed ceiling luminaire or as a floor or table lamp. In these cases, the framework structure described in more detail below may only be spanned with the cover on one side.

The actual luminaire body 5 is suspended with the aid of a narrow, elongated ceiling-mounted housing 3, which is mounted directly on a support element, for example on the ceiling of a room or the like. Such a ceiling-mounted housing 3 could possibly also be dispensed with. In the case of the pendant lamp shown, the ceiling-mounted housing 3 also serves to accommodate operating devices for power supply, the suspension of the lamp body 5 then taking place via ropes 4 which extend downward from the two end regions of the ceiling-mounted housing 3. As will be described in more detail below, these ropes 4 are used here

not only the mechanical mounting of the lamp body 5 but also the power supply of the units arranged in the lamp body 5, which are responsible for the light emission.

The special feature of the lamp 1 according to the invention consists in the design or the shape of the lamp body 5 and the manner in which the light is emitted.

The shape of the lamp body 5 is in this case first of all characterized by the fact that, in the present case, a rectangular, elongated basic structure is formed by a scaffold structure described in more detail below, which forms a - here horizontal - central plane E of the lamp body 5. The framework structure is spanned on both sides of this level E by a cover 10, which is fixed on the one hand with its edge region to the frame of the framework structure, but on the other hand is spanned or fixed on both sides of shaping elements projecting beyond the plane E. Since the material of the cover 10 is flexible, it follows in a curved manner the paths predetermined by the framework structure or the frame of the framework structure and by the shaping elements, so that the recognizable three-dimensional design of the exterior of the lamp body 5 ultimately results. In the following it will be explained in detail how this special, extremely appealing design of the surface can be achieved.

Another special feature of the lamp body 5 is namely the way in which light is emitted. For example, illuminants are initially provided, with the aid of which light can be emitted over a large area and preferably diffusely via the translucent cover 10. In other words, the flexible covering material is designed to be translucent, with illuminants, which are described in more detail below, then being arranged in the interior of the lamp body 5 enclosed by both coverings, with the aid of which light is emitted diffusely as far as possible over the entire cover 10.

In the present case, the diffuse light is emitted via the cover 10 both towards the bottom and towards the top, since in both cases the identical translucent material is used for the covering. However, this is also not absolutely necessary and it can be provided that the two materials used for covering the underside and for covering the upper side differ from one another and e.g. light is emitted only in one direction. Furthermore, it would also be conceivable in certain cases that the material for realizing the lamp cover 10 is completely opaque and, accordingly, no planar light emission is provided.

The lamp 1 shown has moreover in fact further means by means of which light can be directed and preferably emitted bundled in a certain direction. These are lighting units which are also described in more detail below, which in turn are each fastened to the framework structure already mentioned and have a light exit opening for directed light emission. In the present case, these lighting units are arranged in such a way that a directed light emission is provided towards the underside, although it would of course also be conceivable to arrange or orient at least some lighting units in such a way that light is emitted directed towards the upper side, for example in order to specifically target a specific area to lighten the ceiling.

The covering material forming the cover is now designed in such a way that it extends from the frame, that is to say the circumference of the scaffolding structure, to these light exit openings of the lighting units, but does not cover them. Ie, light exit openings of the lighting units preferably also form light exit openings 11 of the lamp cover 10 at the same time and the covering material does not influence the light output realized by the lighting units, although it would also be conceivable that the covering material would cover the light exit openings of the lighting units, at least in these areas is that it has little or no influence on the directional light output.

In the illustrated embodiment, the lighting units described in more detail below also simultaneously represent the shaping elements already mentioned, with the aid of which the three-dimensional design of the surface of the lamp body 5 is achieved. As an alternative or in addition to this, however, further shaping elements could also be provided on the scaffold structure, which do not emit light, but are specifically used to influence the shape of the lamp body 5 due to the effect already described above by correspondingly protruding from plane E of the scaffold structure.

The components of the lamp 1 according to the invention which are located in the interior of the lamp body 5 will now be explained in more detail below. As already mentioned above, it is assumed here that the scaffold structure forms an elongated, rectangular basic shape, to which the further units, in particular the lighting units for direct light emission and, if appropriate, additionally or alternatively, shaping elements provided without a lighting function are then attached. However, it should be pointed out that the concept according to the invention can be implemented in a significantly more versatile manner and, of course, the number of lighting units used for the directional lighting or the number of shaping elements can also be freely selected. The basic shape of the lamp body 5 predetermined by the framework structure does not have to be rectangular or square, but could have any shape. In particular, a polygonal or generally a polygonal shape or an oval or elliptical shape, in particular a circular shape, would be conceivable.

Figures 2 and 3 show first two views of the lamp 1 in a state in which the two covers 10 and coverings described above have been removed. In particular, the perspective view of FIG. 3 shows the frame-like framework structure 20, by means of which the peripheral shape of the lamp body 5 is determined. It can also be seen that a total of six lighting units 50 are used in the case shown. As already mentioned, these lighting units 50 serve, in particular, for direct or directed light emission to the underside, but at the same time they also have other means for generating light, with the aid of which light is emitted across the lamp covers 10.

The central element of the scaffold structure 20 is a plate-shaped light guide 25 which is surrounded at its edge by frame parts 30 which are mitred in the corner regions and are joined to form a frame 21 surrounding the light guide 25. The frame structure 20 is suspended from the ropes 4 via this frame 21, which will be described later. Furthermore, the frame parts 30 also serve to hang the covering material.

Since the plate-shaped light guide 25 should be as light and thin as possible and accordingly has a thickness of only a few millimeters in the present case, its stability is rather low even in cooperation with the frame 21. For additional stabilization of the scaffold structure 20, a reinforcement 22 extending centrally in the longitudinal direction on the upper side of the light guide 25 is therefore provided. At its end regions, as can be seen in FIG. 3, this is coupled to the circumferential suspension cables 4. Since the reinforcement 22 is screwed to the light guide plate, this results in an overall sufficiently stiff or stable construction, in which an undesired bending of the framework structure 20 is prevented despite the not inconsiderable length of the lamp body 5. The reinforcement 22 also has the advantage that it can be used to accommodate components for supplying power to the lighting units 50.

The design and mounting of the lighting units 50 will now be explained in more detail below. On the one hand, these are responsible for the direct or directed illumination towards the underside, on the other hand, however, they also have means for generating light, by means of which the above-mentioned light emission via the lamp cover 10 takes place. In fact, these other means of generating light are like this

executed that they couple light into the light guide 25. Within this light guide 25, the light is then distributed as evenly as possible by multiple reflections in a known manner, then coupled out flat over the top and bottom of the light guide 25 and finally emitted via the cover 10. As already mentioned, depending on the type of light emission desired, it can be provided that light is emitted only via one of the two flat sides of the light guide plate 25. The light is decoupled from the light guide plate 25 in a known manner in that its surface (s) is or are provided with special decoupling structures that deflect the incident light in such a way that it is no longer totally internally reflected, but instead via one of the flat sides can leave the light guide plate 25.

Views of an individual lighting unit in the state not mounted on the light guide 25 are shown in FIGS. 7a to 7e. The actual light output for direct lighting takes place by means of a cylindrical spotlight 60, which has a circular light exit opening 62 on the front or underside of its cylindrical housing 61, via which the light output takes place. In the exemplary embodiment shown, according to the sectional view of FIG. 5 or 6, an LED circuit board 64 arranged within the spotlight housing 61 with an associated LED 65 or an LED cluster is used as the light source, this LED 65 being arranged in front of a lens 66 with the aid of which the LED Light collimates, that is, it is formed into an approximately parallel beam, which is then emitted via the light exit opening 62. The lens is a so-called TIR lens, which is already well known, but obviously, as an alternative to the illustrated embodiment of the radiator 60, other optical systems could also be used, with the aid of which direct, directed light emission can be achieved.

Each lighting unit 50 thus has a radiator 60 which, as can be seen, for example, from the sectional views in FIGS. 4 to 6, is positioned such that it is approximately in the center of the plane of the light guide plate 25 and thus plane E of the framework structure 20 is arranged. That is, the radiator 60 projects beyond the horizontal plane E of the framework structure 20 both towards the bottom and towards the top. The light guide plate 25 each has a circular receptacle - or assembly opening - in which a lighting unit 60 is then mounted.

The cylindrical housing 61 of the radiator 60 is gimbaled in the preferred embodiment shown, so that a free pivoting of the radiator 60 and thus an alignment of the directional light output is made possible. However, a rigid holder or a holder that only allows pivoting about a single axis would also be conceivable for at least some of the radiators 60.

The attachment of the radiator 60 together with the means for the gimbal 70 takes place here via a plurality of ring-like mounting elements, which can be seen in particular in the sectional view of Figure 6.

First, a first, annular angled fastening part 75 is provided, which is designed such that it rests with a lower, horizontal leg 76 on the underside of the light guide plate 25. From this horizontal leg 76 extends on its inner circumference a second vertical leg 77, which initially has two mutually opposite openings 78, into which suspension elements 71 of the gimbal bracket 70 engage. On the other hand, LED boards 90 which are evenly distributed over the circumference and are directed outward are provided on the circumferential wall of the vertical web 77 and are directed outwards (see FIGS. 7a and 70).

For further assembly of the lighting unit 50, an upper mounting ring 80 is provided which can be connected to the angled fastening part 75 by means of a plurality of screws 81. Furthermore, a further spacer ring 85 is provided below the upper mounting ring 80 and is positioned between the underside of the ring 80 and the top of the light guide 25.

The lighting unit is then mounted by first attaching the angled fastening part 75 with the gimbal 70 attached to it and the radiator 60 from the underside to the mounting opening of the light guide 25. In this state, the spacer ring 85 is then placed from the top and, finally, the second mounting ring 80 is connected to the lower angled fastening part 75 with the aid of the screws 81. This results in the entire unit being clamped on the light guide 25 and the lighting unit 50 is accordingly fixed in the desired position on the light guide 25. The mounting opening of the light guide 25 and the corresponding fastening parts for the lighting unit 50 do not necessarily have to be circular, but can also have a different shape, for example a square shape.

In the assembled position of the lighting unit, the LED boards 90 are positioned and aligned in such a way that they lie opposite the edge region of the mounting opening of the light guide 25, that is to say the inner peripheral surface 26. When these LEDs 91 are activated, the light is thus coupled into the edge region of the mounting opening of the light guide 25. It is further advantageously provided that - as can again be seen in FIG. 6 - those areas of the angled fastening part 75 and the spacer ring 85 between which the light guide 25 is clamped are provided with a ring-like reflecting element 79 or 86. This is preferably a highly reflective material, on the one hand optimizing the coupling of light, on the other hand mixing the light and thus making the coupling more uniform over the entire circumference in the light guide 25 is improved. This measure also contributes to the fact that the flat light guide 25 is illuminated uniformly and ultimately the luminaire cover 10 then appears in a uniform brightness.

A uniform light output via the lamp cover 10 is also optimized in that - as can be seen in particular from FIG. 3 - the lighting units 60 are positioned as evenly as possible in the plane of the light guide plate 25. At the same time, however, this positioning of the lighting units 50 also allows them to be supplied with electricity in a simple manner, as will be explained in more detail below.

To suspend the luminaire body 5 and power supply of the lamps, it is provided that the cables 4 led downwards from the ceiling-mounted housing 3 are passed through the frame parts 30 at special openings 34. In the area of the ropes 4, a strain relief element 38, which can be seen in FIGS. 8 and 9, is additionally inserted into the frame parts 30 and is looped over by the rope 4, so that a strain relief preferred for secure suspension is achieved here.

The ropes 4 then extend above the light guide 25 to the central reinforcement 22 and are here electrically coupled to further lines and units used for the power supply, which lead to the lighting units 50 along the reinforcement. It can be provided that the central reinforcement 22 is U-shaped and thereby contains an elongated receiving space for further power supply units for the power supply of the lamps. These can be small circuit boards or electronic components, which finally convert the supply voltage supplied via the suspension cables 4 into a suitable voltage for the operation of the LEDs 65 of the radiators 60 and the LEDs 91 responsible for coupling light into the light guide 25. For example, it can be provided that an operating device arranged in the ceiling-mounted housing 3 first converts the general mains supply voltage into a low-voltage supply voltage, which is supplied to the lamp body 5 via the suspension cables 4. The actual power supply of the lighting units 50 then takes place by means of the further electronic components which are positioned in the central reinforcement 22.

It can preferably be provided that the directional light output can be set independently of the flat and possibly diffuse light output realized via the cover 10. A corresponding additional transmission of tax

Formations required, which may then require the use of additional lines for signal transmission or for a separate power supply of the corresponding lamps. Of course, in addition to this, provision could also be made for the intensity and / or color or color temperature of the illuminants to be adjustable.

Of course, however, a different positioning for the means for power supply can also be realized. In the case of the pendant lamp, it would also be conceivable to dispense with the ceiling-mounted housing 5 and to arrange suitable operating devices which convert the mains supply voltage into a voltage suitable for LED operation directly in the receiving space of the central reinforcement 22.

After mounting the lighting units 50 on the light guide plate 25, the resulting arrangement is then covered with the flexible material which forms the cover 10 of the lamp body 5. A so-called bidirectionally flexible textile material is preferably used for this, which is therefore stretchable in two mutually perpendicular directions of the material plane. As already mentioned, the material can be made translucent in particular if diffuse brightening of the lamp body 5 is desired. In this regard, however, there are no general restrictions and it would also be conceivable to use a material which is designed in a special way in order to give the surface of the lamp body 5 a special appearance. A patterned material or even an opaque material could also be used for this, different materials with different optical properties possibly being used for the upper side of the lamp body 5 and the lower side.

It is essential, however, that the material on the one hand is braced over its circumference with the scaffold structure 20, on the other hand it extends to the lighting units 50 and is supported or also fixed there, whereby the outer cover 10 of the lamp body 5 ultimately takes the form recognizable in Figure 1.

The covering material 10 is braced with the frame 30 in that the frame parts - as can be seen in FIG. 8 or FIG. 9 - are designed in such a way that two longitudinal grooves 31 and 32 open to the outside are formed, which are used for hanging serve the edge region of the covering material 10. Strictly speaking, according to the representation of FIG. 9, the covering has a so-called welt 12 on its edge region, which is inserted into the outwardly directed groove 32. The covering material wraps around the outwardly directed lower edge of the frame part 30, so that it is firmly attached here. Since the covering material 10 is preferably suspended in the frame parts 30 over its entire circumference in the manner described above, it is accordingly under tension, so that it is adequately fixed to the frame parts 30 by this measure. After both the upper and the lower cover 10 have been attached to the frame in this way, a T-shaped cover 35 is then placed on the frame parts 30, which engages with a central web 36 in a corresponding receiving opening of the frame part 30 and is clamped here . This frame 35 primarily closes the frame all round, the frame 35 is not absolutely necessary for holding the covering material.

The covering material clamped in this way with the frame 21 then covers both the top and the bottom of the frame structure 20, which is formed in particular by the flat light guide 25 and the frame 21 and the reinforcement 22. On the other hand, the covering or cover 10 is, however, also fixed to the lighting units 50, strictly speaking on the front or rear sides of the radiators 60, so that the lighting units 50 projecting beyond the plane of the light guide plate 25 achieve a special curved, three-dimensional shape of the cover becomes.

The cover 10 has the light exit opening 62 of the radiator 60 and the circular rear of the radiator 60 corresponding recesses or openings. The cover 10 is fastened to the radiator 60 in the region of the light exit opening 62

here with the aid of two clamping rings 67 and 68, which engage in one another in such a way that they can be clamped or locked together, but at the same time can also be fastened to the spotlight housing 61. The edge area of the covering material is first inserted into the inner area of the outer ring 67. Then the second clamping ring 68 is inserted from the opposite side, so that it engages with the outer ring 67 and clamps the textile material between them. The arrangement consisting of the two rings 67 and 68 with the covering material clamped therein is then placed on the front end region of the cylindrical lamp housing 61. As a result, the covering material is flush with the light exit opening 62 of the radiator 60.

On the other hand, the covering material is fixed in place by the fact that it again has an opening, the size of which is dimensioned somewhat smaller than the outer circumference of the rear emitter housing 61. This has a removable cover 69, which is attached with the aid of a screw 69a the radiator housing 61 can be fixed. The covering material is thus positioned in such a way that it lies at least in the edge area on the back of the radiator housing 61. The rear cover 69 is then screwed on, so that the covering material is also fixed to the radiator 60 here. For reasons of clarity, the anchoring of the covering material on the frame 21 on the one hand and the radiator 60 on the other hand is only partially shown in FIGS. 5 and 9.

The measures described above cover the covering material on the one hand between the peripheral frame 21 and on the other hand on the lighting units 50 such that the flexibility of the material results in a curved surface design of the cover 10 which follows the positioning of the lighting units 50 . This results in a particularly appealing design of the luminaire housing, which gives the luminaire 1 a particularly interesting appearance, which may be further emphasized by the fact that the surface of the luminaire housing can also emit light or appear luminous with the aid of the LEDs 91.

The previously described effect of the design of the surface shape can be further enhanced by the fact that the emitters 60 are adjustable due to the above-mentioned gimbal, in particular can thus be aligned in the desired manner in order to emit light in a very specifically selected angular range. Due to the flexibility of the covering material, this can follow an adjustment of the emitters 60, so that despite the different alignment of the emitters 60, a luminaire cover which is closed apart from the light emitting openings 11 is in principle achieved. The gimbal for the radiators 60 is chosen such that they maintain the set orientation despite the tension of the cover 10. A certain friction of the gimbal suspension elements is therefore required for this, or corresponding latching means are provided, which lock the emitters 60 accordingly in the set orientation.

The previously described concept of the special design of the surface or shape of the lamp body 5 is not necessarily limited to using adjustable lighting units 50 for this purpose. Instead, other, non-light-emitting shaping elements could also be used, which through appropriate positioning and connection to the covering material ensure that the lamp cover is given a special design. In the event that these shaping elements are designed to be adjustable, the end user can in turn flexibly influence the shape of the lamp.

Ultimately, with the help of the solution according to the invention, a possibility is created to emit light in an appealing manner and to perform a wide variety of lighting tasks. At the same time, the external appearance of a lamp can be designed in a particularly positive manner by the measures according to the invention.

Claims (10)

Expectations 1. Arrangement for light emission with a plate-shaped light guide element (25), which is designed for light emission via at least one flat side, characterized in that the light guide element (25) has a recess or opening in which a lighting unit (50) is arranged, which has first illuminants which are designed to emit light separately from the light guide element (25), and further illuminants (90, 91) are provided and arranged in such a way that light which is emitted by these further illuminants (90, 91), enters the light-guiding element (25) via an edge surface (26) of the recess or opening and via which at least one flat side is emitted. 2. Arrangement for emitting light according to claim 1, characterized in that the first illuminants have a radiator (60). 3. Arrangement for emitting light according to claim 2, characterized in that the radiator (60) is adjustably mounted. 4. Arrangement for emitting light according to claim 3, characterized in that the lighting unit (50) has means for gimbal mounting (70) of the spotlight (60). 5. Arrangement according to one of the preceding claims, characterized in that the lighting unit (50) has ring-like fastening elements, between which the light-guiding element (25) is received by clamping in the assembled state of the lighting unit (50). 6. Arrangement for emitting light according to one of the preceding claims, characterized in that the further illuminants (90, 91) are also part of the lighting unit (50). 7. An arrangement for emitting light according to claim 5 and claim 6, characterized in that the further illuminants (90, 91) are distributed around the circumference of one of the ring-like fastening elements and the edge surface (26) of the recess of the light-guiding element (25) is arranged facing. 8. Arrangement for emitting light according to claim 7, characterized in that the further illuminants (90, 91) are formed by LEDs or LED boards. 9. Arrangement for emitting light according to one of claims 5 to 8, characterized in that the fastening elements are designed to be reflective in their area receiving the light-guiding element (25) or are provided with a reflector (79, 86). 10. Lighting unit (50) for use with a plate-shaped light-guiding element (25), the lighting unit (50) comprising: ”- means for fastening in a recess or opening of the light-guiding element (25), - first illuminants, which are designed for this purpose, separated to emit light from the light-guiding element (25), and - Further illuminants (90, 91) which are arranged such that light which is emitted by these further illuminants (90, 91) enters the light-guiding element (25) via an edge surface (26) of the recess or opening. 11 sheets of drawings