EP2008017B1 - Lamp, especially suspended lamp, comprising a first and a second light emitting area - Google Patents

Abstract

The invention relates to a lamp (1), especially a suspended lamp, comprising a housing (2) that is provided with a first light emitting area (4) with a first light influencing element (9) on one side thereof while being fitted with a second light emitting area (21) with a second light influencing element (22) on another side for direct illumination. In order to improve indirect illumination of the lamp, the second light influencing element (22) can be moved into at least two different positions (S1, S2, S3).

Description

The invention relates to a luminaire according to the preamble of claim 1.

In a luminaire of this type are known constructions, which are known in particular as a suspended luminaire. An essential feature of this luminaire is that it has on one side of its housing a first light-emitting area for direct illumination of the room and a second light-emitting area, which serves for the indirect illumination of the room and at the opposite of the first light-emitting area back of the lamp is arranged. It is the purpose of the second light-emitting region having a translucent light-influencing element to illuminate the lateral and / or rearward surroundings of the luminaire, in order to reduce the luminous intensity difference between the first light-emitting region and the surroundings of the luminaire, and / or in addition to the direct illumination indirect lighting in particular at the back of the lamp, which improves the room lighting and diminishes brightness differences in the back and side area of the lamp. Such a lamp is for example in the EP 1 734 300 A1 described.

In the light-transmissive light influencing element of the second light-emitting region, it may, for. B. to act an element that is translucent or teillichtdurchlässig and is formed by a translucent disc or a perforated plate, the z. B. is arranged in the region of the rear wall of the housing of the lamp.

Lights of the type described above are usually suspended at a distance from the ceiling of at least 50 cm. Such Abpendelhöhen ensure the ceiling side as pleasant perceived, glare-free luminance. In certain applications, however, the lights must be mounted either with a small distance to the ceiling or at high ceiling heights with an unusually large distance to the ceiling, which can lead to the one side undesirable high luminance occur that oppose a corresponding assembly and accordingly the Possible applications of the luminaire could limit, or on the other hand, with large Abpendelhöhe ceiling side Low luminance occur and the desired in the room share of indirect light is too low.

From the EP 1 584 864 A2 is a luminaire for the production of direct and indirect lighting known. The luminaire includes a reflector with an adjustable reflector wall.

From the DE 198 59 936 A1 a luminaire is known in which the luminous flux can be divided into direct and / or indirect light by means of a pivotable luminous flux divider device.

From the DE 10161 468 A1 a luminaire with a main reflector and a secondary reflector is known in which the secondary reflector relative to the main reflector can be adjusted in different positions.

The invention is therefore based on the object to improve a luminaire of the type specified with respect to the indirect lighting. In particular, the light emitted for the indirect illumination should be better utilized, preferably for the lateral edge regions of the luminaire. In this case, the lamp is to ensure optimal light distribution both in terms of direct and indirect light with low Abpendelhöhen and immediately under the ceiling, i. can be mounted in a so-called mounting position, as well as at corresponding room heights with large Abpendelhöhen.

This object is solved by the features of claim 1. Advantageous developments of the invention are described in the appended subclaims.

The invention is based on the finding that an indirect illumination, in particular in the lateral edge region of the luminaire, is meaningful, since a lack of indirect illumination essentially leads to brightness differences, in particular in the edge region of the luminaire.

In the luminaire according to the invention, a second light-influencing element assigned to the second emission region can be adjusted into at least two different positions. As a result, it is possible to adapt the second light-influencing element to targeted influencing or also a non-influencing of the light of the indirect lighting. As a second light-influencing element, a pivotally and / or releasably mounted light distribution wing can be provided, for example, on the ceiling side of the luminaire or a corresponding carrier profile. whose shape and / or size as well as its position and / or inclination relative to the vertical center plane of the lamp in particular in dependence on the respective distance of the lamp to the ceiling is selectable. The second light-influencing element can thus be adjusted, for example, so that it can serve to limit the opening for the light of the indirect lighting, depending on the position to limit a smaller or larger opening, or to fully release the opening.

In particular, when the second light-influencing element is a reflector, the indirect light can be laterally reflected and deflected to the reinforced illumination of the side edge region of the luminaire. In this case, in addition to the reflection side possibly already existing on the luminaire side, additional reflection surfaces and, if appropriate, also dimming surfaces are provided, which lead to specific adaptation options to different room heights or Abpendelhöhen.

With low rooms and correspondingly low Abpendelhöhen that can go up to direct mounting situations, the light distribution wings are, for example, designed and dimensioned so that unacceptably high luminances are avoided on the ceiling and a large-area ceiling illumination and thus direct light generation occurs. By contrast, in the case of very large pendulum heights, where the luminance on the ceiling becomes too low and there is insufficient generation of indirect light, the light distribution vanes are preferably made larger and used to radiate the desired, soft, indirect light into the space that is there Trap can not be delivered over a reflection on the ceiling sufficiently.

Since the light distribution vane serving as the second light-influencing element can be reflective, transparent and / or partially transparent, it is possible to achieve very different light distributions between direct and indirect light as a function of the respective field of use of the luminaires, taking into account the largely freely selectable vane shapes and vane sizes ,

An advantageous development of the invention may consist in that not only the second light influencing element is pivotable, in particular pivotable in a parking position, but that in an analogous manner also located above a arranged in the lamp housing fluorescent lamp translucent cover according to pivotable or high-swivel can be configured and thus the lamp for any required lamp replacement is easily accessible.

Preferably, the second light-influencing element is pivotally mounted on a cover, which can be coupled with a cover profile open or reinforcing hollow profile, in particular via a snap-locking connection. The use of the cover for supporting the second light influencing element leads to a technically very simple, basically retrofittable solution and on the other hand allows a feasible by a simple pivoting transfer of the second light influencing element from a photovoltaic inoperative parking position above the cover into a functional position in which it from the light source or corresponding reflective surfaces in the luminaire Light distributed over the ceiling over large areas due to reflection and / or scattering effects. In this embodiment, the second light-influencing element is preferably made comparatively small area, ie, its surface substantially corresponds to a carrier profile-side reflecting surface adjacent to it, without being limited to this size ratio of the reflection surfaces.

In the case of large Abpendelhöhen in correspondingly high rooms, however, the second light influencing element preferably has a large concave outer area, which contributes to the addition of the associated reflection surface of the reinforcing profile or carrier hollow profile both for direct light generation and serves to provide the desired indirect light component in this Case can not be provided by scattering effects on the ceiling because of the large Abpendelhöhe.

An advantageous development is further characterized by the fact that the cover profile at the edge each has a part-cylindrical, upwardly open channel with a concentric to the channel, connected via a web to the channel bottom cylindrical profile bar, that the bearing-side edge of the second light influencing element formed as a part-cylindrical coupling element is, and that in the assembled state, the part-cylindrical groove with the channel concentric profile bar and the form-fitting engaging in the receiving area between the channel and profile bar coupling element form a pivoting hinge. The opening of the partially cylindrical channel is matched to the partially cylindrical coupling element of the second light influencing element such that the second light influencing element is inserted perpendicular to the longitudinal extent of the receiving channel in this groove and then by pivoting the second light influencing element from the insertion position, the actual hinge formation is inevitable. Decoupling between the second light-influencing element and covering profile is again possible in a correspondingly simple manner, since the light-influencing element only has to be pivoted back into the above-described insertion position and then released from the covering profile.

This simple coupling and releasability of the second light-influencing element is also advantageous in connection with another feature of the invention, namely the possibility of inserting the light-influencing element offset by 180 ° in the receiving channel of the cover profile, because in this type of mounting, the light-influencing element to the outside hinged and lies, for example, on the upper translucent cover for the light source.

As a result, a selectable part of this light-transmissive lamp cover is dimmed up and the light incident on that part of the cover is reflected downwardly by the second light influencing element for amplifying the direct light. This ensures that the luminance on the ceiling directly above the lamps always remains within the permissible range.

Another particular advantage of the invention to be mentioned is that the preferably consisting of a thermally conductive material second light influencing element, which is thermally conductively coupled to the carrier hollow profile, forms effective cooling surfaces in all its operating positions.

The embodiment of the invention is suitable for all such lights whose side edge has a transversely directed to the emission side of the lamp distance from its support, in particular a ceiling. Therefore, the invention is excellent for a suspension lamp. However, the invention is also suitable for a surface-mounted luminaire, in particular when the rear wall of the luminaire is inclined to the side edge.

The above object is further solved by the features of independent claim 27. In this embodiment according to the invention, the housing is a flat housing, wherein the second Abstrahlbereiche are arranged on the back of the flat housing and the quick-release connections are arranged in the region of the inner edges of the second Abstrahlbereiche. This embodiment of the invention leads to a lamp in flat design, in which the indirect lighting is difficult because of the low construction height. However, the embodiments according to the invention also make it possible, with such a luminaire construction, to achieve the desired improvement in indirect lighting, in particular in the opposite side edge regions of the luminaire. In addition, the second light-influencing elements can be assembled and disassembled in a way that is easy to handle, and thus the luminaire can be optionally adapted to indirect lighting.

Finally, according to the third independent claim 28, a luminaire, in particular an interior luminaire or suspended luminaire in a flat construction, is proposed, which light and outlet surfaces located on the ceiling, a center and between two end portions arranged, a high flexural stiffness exhibiting carrier hollow profile with internal receiving space and outside concave reflecting surfaces for at least two to the carrier hollow profile adjacent and parallel fluorescent lamps, as well as on both sides of the carrier hollow profile and the side of the fluorescent lamps provided, tapering to the side of the light and extending through at least room-side light exit surfaces closed Lichtführungskammern having ceiling on the carrier hollow profile pivotally and / or releasably mounted light influencing elements in the form of Lichtverteilungsflügeln are provided, whose shape and / or size and their position and / or inclination relative to the vertical center plane of the carrier hollow profile, in particular depending on the respective distance of the lamp to the ceiling is selectable.

In the subclaims features are included that allow simple, small and inexpensive to produce constructions and are particularly suitable for an elongated lamp.

• Fig. 1 eine erfindungsgemäße Leuchte im vertikalen Querschnitt;
• Fig. 2 den oberen und mittleren Teilbereich der Leuchte in vergrößerter Darstellung;
• Fig. 3 den Teilbereich in einer besonderen Funktionsstellung;
• Fig. 4 die Leuchte in perspektivischer Seitenansicht von oben;
• Fig. 5 bis 7 die zweiten Lichtbeeinflussungselemente in drei verschiedenen Positionen und
• Fig. 8 und 9 zwei weitere Ausführungsbeispiele der erfindungsgemäßen Leuchte im Schnitt.

Below, advantageous embodiments of the invention will be explained in more detail with reference to preferred embodiments and drawings. Show it:

• Fig. 1 a luminaire according to the invention in vertical cross-section;
• Fig. 2 the upper and middle portion of the lamp in an enlarged view;
• Fig. 3 the subarea in a special functional position;
• Fig. 4 the lamp in a perspective side view from above;
• Fig. 5 to 7 the second light influencing elements in three different positions and
• 8 and 9 two further embodiments of the lamp according to the invention in section.

The main parts of the designated in their entirety by 1 luminaire are a housing 2, which has on its emission side, namely on its side facing the room to be illuminated 3, a first light-emitting region 4, in the present embodiment of the lamp 1 substantially over the entire side of the housing 2 facing the space 3 extends and preferably extends in an emission plane E1.

The housing 2 encloses with its radiating side translucent bottom wall 2a, opposite side walls 2b and the first radiating region 4 opposite rear wall 2c a housing interior 5, in which at least one connection means 6 arranged for at least one lamp 7 and z. B. is attached to a housing inner wall which is connected by electrical leads, not shown, with an electrical power supply. The lamp 7 may, for. B. be a so-called fluorescent lamp, to the power supply an operating device 8 belongs, the z. B. also between the bottom wall 2a and the rear wall 2c in the interior 5 can be arranged.

In the preferably approximately over the entire emission side of the housing 2 extending radiating region 4, a first light influencing element 9 is arranged, which forms the bottom wall 2a, preferably flat and is in particular blinding, so that the maximum size of one of the perpendicular to the plane E1 extending Main emission direction R deviating lateral angle of radiation W1 is limited to an angular extent, which gives a sufficient glare with respect to a standing in the illuminated room 3 and obliquely upward looking person. This can be achieved by means of a per se known anti-dazzle structure, which is arranged on the first light-influencing element 9 on the outside or inside or between two superimposed and the first light-influencing element 9 forming discs is arranged. In this case, the anti-dazzle structure may be formed on the associated side of the relevant light influencing element or the disk or on a transparent film, which may be arranged inside or outside or between the aforementioned disk-shaped elements.

The luminaire 1 has a quadrangular shape in the viewing direction at right angles to the first radiating region, wherein it is preferably elongated transversely to the plane of the drawing sheet, as it is Fig. 4 shows. It may be a single luminaire or a lamp 1, which is formed at its longitudinal ends for a juxtaposition of multiple lights 1 to a line of light.

The lamp 1 is preferably a so-called flat lamp, d. h., It is designed in a flat construction of the housing 2, wherein the width b extending transversely to the longitudinal direction is in relation to the height h1, which is about 4: 1 to 8: 1, in particular about 3: 1.

In particular, in a lamp 1 elongated construction can on both sides of its vertical center plane or longitudinal center plane E2 connecting means 6 for two Lamps 7 may be provided, for. B. in one end region or in both end regions in each case two sockets for two lamps 7, preferably in the form of straight extending tubes, in particular fluorescent tubes.

In the embodiment, the rear wall 2c is formed on both sides of the vertical center plane E2 inclined outwardly, so that the height h1 of the housing 2 tapers to the side or longitudinal sides, preferably to the height h2 of a side profile 11, the edges of the Bottom wall 2a and the rear wall 2c interconnects and forms a low side wall 2b. In particular, the rear wall 2c, at least in the region in which the second light influencing element, which will be described in more detail later, is arranged, is inclined towards the nearest lateral edge of the housing 2.

First, with respect to the vertical longitudinal center plane E2 centrally or centrally between the two lamps 7 arranged reinforcing profile 14 is described in the form of a carrier hollow profile having a substantially V- or U-shaped cross-sectional shape and is integrated in such a position in the housing 2 in that its bottom web 14a has a vertical distance from the preferably flat or plate-shaped first light-influencing element 9 and its lateral profile legs 14b extend into the upper region of the housing 2, e.g. B. have a vertical distance from the top of the housing 2. The walls of the reinforcing profile 14 are - viewed from the outside - concave, whereby the reinforcing profile 14 is a multi-functional profile, since it not only supporting function and in terms of its interior recording function for ballasts and the like, but its outer surfaces are also used as reflective surfaces , On both sides of the reinforcing profile are accordingly tapering to the side boundary of the lamp towards extending light guide chambers formed.

The reinforcing profile 14 is closed or closed on the upper side by a profile cover 15, which is preferably detachably connected by a designed as a snap-locking connection quick-release connection with the free edge regions of the profile legs 14 b, z. B. by clipping on. For this purpose, a latching connection 16 is provided in each case between the edge regions of the profile limbs 14b and the associated edges of the preferably flat profile cover 15. This can be formed by protruding from the profile legs 14b latching legs 14c, which cooperate latching with the profile cover 15 downwardly projecting locking legs 15a. The operating device 8 is preferably arranged in the cavity 17 of the reinforcing profile 14.

The reinforcing profile 14 preferably extends over the extending transversely to the plane of the drawing length of the lamp 1 and z. B. with end-side End walls of the housing 2 to be connected or supported thereon. To stabilize the housing 2 spaced support webs 18 are provided at longitudinal intervals, which are connected at their upper edges with the rear wall 2c and stabilize them. The support webs 18 may extend over the entire width of the interior space, wherein they extend down to the first light-influencing element 9 in the middle region and can support this in the back or on the inside. On both sides of this support region 18a 18 recesses 19 are provided in the support webs, each of which create a lateral longitudinally continuous interior region 5a under the respective lateral areas of the support webs 18. In the support region 18 a of the support webs 18, for example, under the reinforcing profile 14 one or more, z. B. two eccentric, recesses 18c be present, which also form longitudinally continuous interior areas 5b, the z. B. can be used as a cable channel.

On the opposite side of the first radiating area 4, the luminaire 1 has at least one second light-emitting area 21 for indirect illumination, which is formed by a translucent or partially transparent section in the rear wall 2c and preferably on the outside - a second light influencing element - described in more detail below 22 is assigned, with which the radiated from the second radiation region 21 light can be influenced or changed, in particular laterally deflected.

The suspension of the lamp 1 shown is preferably carried out by means of cables cooperating suspension means which may be connected to the end portions of the lamp 1. Usually, the Abpendelhöhe the lamp 1 from the ceiling at least 50 cm, so that the directed against the ceiling indirect light on the ceiling produces no disturbing high and possibly dazzling luminance. However, this does not apply in the case of a smaller, for example, only about 25 cm amount Abpendelhöhe and of course not if the lamp must be mounted directly in a so-called mounting position below the ceiling,

In order to ensure even in these cases a small distance between the lamp 1 and the ceiling that the desired proportion of indirect light is obtained, the lamp 1 according to the invention is provided with the light influencing elements 22, the indirect light even at a small distance of the lamp 1 to the ceiling wide ensure that the luminance on the ceiling remains within the prescribed range.

In the present exemplary embodiment, in which two connection elements 6 are arranged for or with a lamp 7 on both sides of the vertical center plane E2, two second emission regions 21 are each arranged in mirror image with a second light-influencing element 22 with respect to the vertical center axis E2. Therefore, in the following description, the description is limited to a luminaire half, namely the left half of the luminaire.

The second emission region 21 is located in the rear emission region above the lamp 7 or above the connection means 6, in the region of which the associated lamp 7 is positioned. The indirect lighting is favored by the fact that the second emission area 21 is arranged inclined to the associated side edge. The angle W2, which the rear wall 2c encloses with the bottom wall 2a, is about 20 to 40 °, in particular about 30 °.

In the present embodiment, the second radiating portion 21 is formed by a translucent or partially transparent cover wall 23 which closes an opening 24 corresponding to its shape in the rear wall 2c, in particular by the cover wall 23 being positionable in the opening 24, forming a portion of the rear wall 2c forms. The opening 24 is so large that the lamp 7 is movable therethrough and connectable to the one or more connection elements 6 or is removable or interchangeable. The at least one connecting element 6 is designed so that the lamp 7 during its insertion and removal movement with its contact elements with associated mating contact elements of the housing 2 during insertion contactable and can be brought out of contact during removal. If z. B. the lamp has 7 end protruding pins, the contact pins receiving contact slots are arranged on the housing side and directed in the direction of movement that the pins are inserted into the slots during insertion of the lamp 7 in the slots and are removable during removal.

The cover wall 23 is connected by a hinge 25 to the housing 2, which connects the cover wall 23 in the region of its one edge, in particular in the region of its edge facing the vertical center plane E2, with the associated edge region of the housing 2. As a result, the cover wall 23 is pivotally mounted not only between its closed position and a mounting or dismounting the lamp 7 enabling open position, but it is also held captive on the housing 2.

For additional light influencing the cover wall 23 may, for example, on its inner side light-guiding elements 26 for influencing the transmitted light.

The second radiation region 21 is preferably arranged adjacent to the reinforcement profile. The width b1 of the second emission region 21 is approximately one third to one fifth, in particular approximately one fourth, of the dimension b2 of the associated rear wall half. It should be noted, however, that it would also be possible to extend the second radiation area towards the side of the luminaire. Thus, for example, not only the cover wall 23 are made transparent or translucent, but also be provided to make the at least partially partially transparent to the cover wall 23 rear wall of the lamp housing.

The joint 25 is preferably mounted by latching its hinge parts and disassembled by unlocking, in each case by a transversely directed to the hinge axis assembly or disassembly movement.

The cover wall 23 may, for. B. with two edge-side and inwardly directed legs 23a, 23b U-shaped, wherein the associated hinge part is arranged in the free edge region of the inner wall leg 23a. As a result, the joint 25 can be realized in a position sunk into the housing 2. The wall leg 23b on the outer edge stabilizes and improves the cover wall 23 in the closed position, for. B. by means of a nose 27 in accordance with the sunk in the closed position Fig. 2 and 3 right detent or clamping with the opposite edge of the opening 24 cooperates.

The joint parts may be formed by an undercut groove with two claw-shaped gutter legs 25c, between which a z. B. in cross-section cylindrical pivot pin 25 b can be latched and disengaged by elastic bending of the gutter legs.

In the context of the invention, the hinge 25 may be formed by a plug / rotary socket without latching, with a socket channel, which is open to the free edge of the cover wall 23 and pivoting the cover wall 23 in the inserted position allows without the cover wall side plug-in part Cover wall 23 is latched therein. The securing of the cover wall 23 in such a socket channel takes place automatically in the closed position of the cover wall 23 in that the cover wall 23 is delimited by the edge of the opening 24 opposite the socket channel in the socket channel.

The second light-influencing element 22 is formed by a light distribution wing in the form of a thin wall part, which is detachably connected to the housing 2 by a quick-connection 31 in the region of the rear wall 2c. In the embodiment, the quick-release connection 31 is in the region of the joint 25 and the jack, z. B. sunk in part in the outer surface of the rear wall 2c and / or offset inwardly by the offset v.

The second light-influencing element 22 is adjustable in at least two different positions, can be pivoted to be exact, with the quick-release connection 31 located on the carrier hollow profile or the reinforcing profile 14 permitting this. Two possible positions for the second light-influencing element 22 are denoted by S1 and S2. In the position S1, the so-called light distribution position, the second light-influencing element 22 projects transversely to the rear wall 2c, namely upwards in the case of a ceiling light. In position S2 ( Fig. 3 ), the Abklappposition, however, is the second light influencing element 22 in a moved against the rear wall 2c position, wherein it preferably rests against the cover wall 23 and the cover wall 23 and the opening 24 completely or partially or almost covers. In the exemplary embodiment, the width b3 of the light-influencing element 22 is so great that its free edge ends at a distance c in front of the outer edge of the second light-emitting region 21 or the opening 24. The distance c is z. B. about ¼ of b1.

The directed in the position S1 to the associated side wall surface 22a is preferably curved about a parallel to the center plane E2 extending axis of curvature, preferably curved cylindrical section or rounded.

It is the purpose of the second light-influencing element 22 to influence the light emitted by the second emission region 21, in particular the light emitted in the region of the second emission region 21 facing the center plane E2, and thereby to change the indirect illumination. For this purpose, the second light-influencing element 22 can be at least partially translucent or form a reflector 32, which reflects the light radiated from the second emission region 21 toward the side facing away from the center plane E2. The reflector 32 may, for. B. be formed in that the second radiation area 21 facing wall surface 23a is a reflection surface. In the illustrated position, the second light influencing element 22 includes an acute angle W2 with the center plane E2, which may be less than about 40 °. In this swung-out light distribution position S1 is accordingly of the fluorescent lamps coming, the translucent cover 23 passing light on the concave wall surface, which serves as a reflection and / or scattering surface, deflected and distributed widely over the ceiling, so that when close to ceiling mounting the lamp inadmissible high luminances are avoided on the ceiling and evenly indirect Light is generated.

In the position S2, the second light-influencing element 22 serves to cover the opening 24 or the second light-emitting region 21 completely or partially or almost completely, thereby at least partially shading the light. In this case, if the second light-influencing element 22 is designed as a reflector 32, the light is reflected in the covered area, so that virtually no light losses occur in this area. This second position S2 is used for. B. to avoid the indirect lighting or reduce. This arrangement of the second light influencing element 22 will therefore be chosen especially if the luminaire is directly under the ceiling, i. must be mounted in a so-called mounting position. In this folded-down position, the light-influencing element 22 is located directly above or adjacent to the translucent cover 23, so that the light is faded upwards and the light component striking the light-influencing element 22 is reflected downwards for amplifying the direct light Folded outward Light influencing element 22 thus ensures, by the achieved dimming effect, that the luminance on the ceiling always remains within the permissible range.

The second light-influencing element 22 is also preferably adjustable to a third position S3 in which it is moved inwardly and against the housing 2, wherein it may be located at the top of the housing 2 and may rest on the rear wall 2c or on the profile cover 15 , In this position S3, the second light influencing element 22 is in a non-lighting inoperative position or parking position, the z. B. may also be a packaging or transport position. If both light influencing elements 22 are present, they may overlap and lie on top of each other as it does Fig. 1 and 2 demonstrate.

Of importance in this inventive design and positioning of the light influencing element 22 further that this is practically not visible in particular in the parking position S3 and in the folded, abutting the translucent cover wall 23 position S2 and in these positions S2, S3 within a line of sight lies under which a spectator located in the room sees the suspended or ceiling-mounted light 1. The appearance of the Lamp 1 is accordingly changed only insignificantly by the light influencing element 22.

The three possible positions S1 to S3 described above for the light influencing elements 22 are again in the FIGS. 5 to 7 shown, wherein in these representations, only the arrangement of the light influencing elements 22 with respect to the reinforcing profile 14 is shown.

In order to facilitate the assembly and / or adjustment of the second light-influencing element 22 and to make it easy to handle, it is advantageous to design the quick-release connection 31 as pivoting hinge or hinge 33 such that the second light influencing element 22 can be pivoted between its positions S1 and S2. In addition, if the light influencing element 22 is detectable in optional pivot positions, z. B. by stiffness in the quick connection, can be realized either swivel positions and light influencing positions.

Another way to adjust the second light influencing element 22 from the position S2 to the S3 position or vice versa is to release the light influencing element 22 and rotate approximately parallel to the rear wall or an imaginary plane running on the rear wall by 180 ° and in the Quick connect 31 again to connect.

For the purpose of simplifying and facilitating the assembly or disassembly, it is therefore advantageous, the quick-release connection 31 by a clamping or latching connector, z. B. to realize a locking connection or a plug / pivot connection, as shown in the embodiments.

The latching connection is formed by a latching pin 31a, preferably of rounded cross-section, and two latching claws 31b, which can be elastically latched onto it. In the exemplary embodiment, the latching pin 31a is arranged via a web on the reinforcing profile 14, preferably on its cover 15, in an upwardly open, part-cylindrical channel and the latching claws 31b are arranged on the associated edge of the light influencing element 22. The latching takes place in that the latching claws 31b resiliently rebound when plugged in and slightly engage behind the latching pin 31a in the plugged state, whereby they automatically deflect. The locking pin 31a is firmly connected by a small connecting web 31c with its carrier. The circumferentially directed distance between the detent pawls 31b is so large considering the small width of the connecting web 31c, in that the light-influencing element 22 is pivotable between the position S1 and the position S3.

In order to adjust the light-influencing element 22 between its positions S1 and S3, it requires the above-described rotation through 180 °, wherein the light-influencing element 22 is to be released, rotated and locked again.

The arrangement is preferably such that in the reflective position S1 the light influencing element 22 is made more difficult or limited against pivoting towards the cover element 23, namely by a stop position between the associated connection claw 31b and the connecting web 31c.

In the exemplary embodiment, the wall of the light-influencing element 22 consists of two wall sections enclosing an obtuse angle W3, the apex 22a of which is located approximately above the inner edge of the second light-emitting area 21. The inner region of the light-influencing element 22 serves in this case to receive the latching claws 31b, while the outer region serves as a reflector or scattering surface and may be, for example, anodized matt.

In the exemplary embodiment, the latching connection or the integrated joint 33 is located in the edge or corner region of the lid 15.

The hinge 25 for the cover wall 23 is formed in the embodiment between the upper edge region of the associated profile leg 14b and a lid 15 obliquely outwardly and upwardly extending legs 15b, which also forms the associated gutter leg 25c. As a result, the joint 25 between the associated profile leg 14b and the lid 15 is arranged.

The second light-emitting region 21 and the cover element 23 and the second light-influencing element 22 preferably extend over the dimension or length L of the housing 2 extending transversely to the plane of the drawing. This also applies in the case of an elongated design of the luminaire 1 according to FIG Fig. 4 ,

The second light-influencing element 22 and the cover element 23 and the associated hinge parts, in this case the latching pin 31a and the latching claws 31b and the channel legs 25c, preferably extend continuously and straightly transversely to the plane of the drawing sheet. These parts can thus be produced inexpensively as profile parts, for example by drawing or extruding one long semi-finished product and by cutting to length.

Fig. 8 shows an embodiment of the lamp 1 according to the invention, which in turn is intended for low Abpendelhöhen, in which case the inner region of the light influencing elements 22 is selected over a large area to increase the direct light component by reflection of the light at this correspondingly formed inner region. By choosing the extent of the coverage of the translucent cover 21 through the inner region of the light influencing elements 22, a targeted reduction of the directed towards the ceiling light component can be achieved, the concave outer region of the light influencing elements 22 in turn ensures that the light reflected by him wide over the Ceiling is distributed.

In the Fig. 9 shown embodiment of a lamp 1 according to the invention is particularly for large room heights, ie determined correspondingly larger Abpendelhöhen. Characteristic of this embodiment is that the light influencing elements 22 are designed to have a larger area and extend into the areas above the light guiding chambers, wherein it is provided in the example shown that the light influencing elements 22 extend into the edge region of the luminaire 1.

The interior of the light influencing elements 22 may be made by selecting the offset 24, i.e., the distance between the pivot bearing and the outside as a partial cover with respect to the lamps, to reduce the luminance on the outside reflective area of the light influencing elements 22 and to maximize the direct light portion by internal reflection.

At the large concave outer area of the light influencing elements 22, a direct light deflection or a corresponding scattering of light takes place, so that the large-area light distribution wings can take over the function of generating indirect light provided at low Abpendelhöhen from the ceiling at low Abpendelhöhen,

It should be pointed out that the light-influencing elements 22, irrespective of their respective structural design, can be designed to be both reflective and scattering, and in particular also transparent or semitransparent, so that the light generation and light distribution required in the respective individual case can be ensured. In the context of the invention, these second light-influencing elements 22 and / or the cover wall 23 (perforated plate) and / or the reinforcing profile 14 and / or the lid 15 may be made of metal or plastic.

By the present invention, therefore, the possible uses of interior lights or pendant lights are significantly expanded. It is achieved in particular that regardless of the size of the distance between the luminaire and the ceiling, optimum distribution ratios between direct light and indirect light, which take account of the respective demands, can always be obtained. Due to the different embodiments of the light distribution wings or second light influencing elements and a more or less large extension of the concave reflection or scattering surfaces outside the closed luminaire structure, the light distribution can be optimally realized and all requirements for the respective installation conditions in different heights rooms can be met. All this can be achieved with very little effort. In particular, it can even be decided on-site when assembling which type of light distribution vanes are used in order to optimally ensure the locally required light distributions.

Claims (14)

1. A luminaire (1), in particular a suspended luminaire, having

   - a housing (2),

   - which on its one side has a first light-emitting area (4) with a first light-influencing element (9),

   - and on another side for indirect illumination has a second light-emitting area (21) with a second light-influencing element (22),

   wherein the second light-influencing element (22) can be adjusted into at least two different positions (S1, S2, S3),
   and wherein the second light-influencing element (22) is arranged in a detachable and preferably exchangeable manner,
   characterised in that
   the second light-influencing element (22) is light-permeable or partly light-permeable at least in partial areas.
2. A luminaire according to claim 1,
   characterised in that
   the second light-influencing element (22) is connected to the housing (2) by means of a clamping connection or a latching connection.
3. A luminaire according to claim 1 or 2,
   characterised in that
   the second light-influencing element (22) is a reflector (32).
4. A luminaire according to one of the previous claims,
   characterised in that
   the second light-influencing element (22) is connected to the housing (2) in such a way that it can be swivelled by means of a joint (33).
5. A luminaire according to one of claims 2 to 4,
   characterised in that
   the joint (33) is integrated into the latching connection,
   wherein the latching connection is formed in particular by a latching pin (31a) preferably of rounded cross section and two latching claws (31b) that can be elastically latched onto the latching pin (31a).
6. A luminaire according to one of the previous claims,
   characterised in that
   the second light-emitting area (21) and the second light-influencing element (22) are arranged above a lamp space on the rear side of the housing (2),
   wherein preferably the second light-influencing element (22) is arranged so that it is laterally offset with regard to the vertical central plane (E2) of the luminaire (1), and the latching connection or the joint (33) is arranged in the edge area of the second light-emitting area (21) facing the vertical central plane (E2).
7. A luminaire according to one of the previous claims,
   characterised in that
   the second light-influencing element (22) can be assembled substantially parallel to the first light-emitting area (4) in two positions that are turned by 180°.
8. A luminaire according to one of the previous claims 3 to 7,
   characterised in that
   the second light-influencing element can be.adjusted between a reflector position (S1) and a covering position (S2) partly or completely covering the second light-emitting area (21) and a freeing position (S3) freeing the second light-emitting area,
   wherein the second light-influencing element (22) preferably can be swivelled between the reflector position (S1) and the freeing position (S3) and/or can be assembled, in particular latched, between the reflector position (S1) and the covering position (S2) so that it is substantially parallel to the first light-emitting area in two positions that are turned by 180°.
9. A luminaire according to one of the previous claims,
   characterised in that
   the second emitting area (21) and the second light-influencing element (22) along the axis of the latching connection or the joint (33) extend over the whole associated dimension (L) of the housing (2).
10. A luminaire according to one of the previous claims,
    characterised in that
    the second light-emitting area (21) is formed at least in part by a light-permeable section of the rear wall (2c) of the housing (2) or by a light-permeable covering element (23) which can be inserted into an emitting opening (24) of the rear wall (2c),
    wherein the covering element in particular is detachable, is connected to the rear wall preferably by means of a latching connection or a joint, and can be adjusted between its closed position and an open position for assembly and disassembly of the lamp respectively.
11. A luminaire according to one of the previous claims,
    characterised in that
    the second light-influencing element (22) comprises a generally flat inner area on the bearing side and an outer area forming a concave reflector connected thereto,
    wherein preferably the inner area and the outer area of the second light-influencing element (22) extend at an obtuse angle in relation to each other.
12. A luminaire according to claim 11,
    characterised in that
    in a reflector position of the second light-influencing element (22) the concavely formed reflector surface is located in a position in which light striking the reflector surface is reflected at least for the most part substantially parallel to the first light-emitting area (4),
    wherein in the reflector position of the second light-influencing element (22) the optical axis of the concave reflector surface preferably extends substantially parallel to the optical axis of a reflective surface of a reinforcing profile (14).
13. A luminaire according to one of the preceding claims,
    characterised in that
    a second light-influencing element (22) intended for high spaces or great pendant heights has a large-surface concave outer area that is used to produce direct light,
    wherein the concave outer area of the second light-influencing element (22) extends preferably as far as into the edge area of the luminaire (1).
14. A luminaire according to one of the preceding claims,
    characterised in that
    the second light-influencing element (22) consists of heat-conducting material and forms a cooling surface for a hollow carrier profile for holding at least one light source.

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