EP2322734A2 - Luminous ceiling - Google Patents

Abstract

The ceiling has light elements (2) lying in parallel at smaller distance and connected with each other by retaining elements (3) arranged between the light elements. The light elements are connected with a room ceiling. The retaining elements have a lowering unit (4) at which the light elements are detachably fastened in a reversible manner. The light elements are pivotably mounted from downwards. Each light element is lowered in an output position and a position in which the retaining elements are deepened. A transparent element is made of polymethyl methacrylate.

Description

The invention relates to a light ceiling formed from a plurality of closely spaced adjacent light elements, which are connected via arranged between the lamp elements holding elements with each other and with the ceiling.

Numerous light-ceiling constructions are known from the prior art. It is common to all these luminous ceilings that large-area lighting elements can be realized by such luminous ceilings and, for example, the entire surface of a room ceiling can be designed as a lighting fixture. This naturally goes hand in hand with impressive visual effects, making ceiling lighting an essential stylistic device in modern rooms.

Often, lighting ceilings are also retrofitted into existing premises. In essence, such a light ceiling thus extends in an intermediate plane at a certain distance from the ceiling and covers for the viewer standing on the ground a large part, if not the entire ceiling. As a result, however, the access or access to the ceiling is made difficult or even impossible, which is particularly problematic when water connections or electrical connections are arranged in the ceiling.

This problem of accessibility already arises in currently conventional false ceiling constructions, which are usually placed on a space spaced from the ceiling support structure plates made of lightweight material and mounted at some positions instead of such a plate filament. In such a case, however, the access to the ceiling or to the back of these filaments is very easy, since you can easily lift and move the individual plates. However, this is not possible with a light ceiling, since the individual light panels are usually very large area with partially over 20 m ² and the individual panels are arranged two-dimensional side by side and this with the shortest possible distances to ensure a uniform, uniform overall picture. The lifting and moving of a panel to get to the opposite ceiling, is therefore not possible in light ceilings.

The invention has thus set itself the task of creating a light ceiling, on the one hand is a large area and can consist of large panels and provides a visually consistent overall picture, but still ensures easy access to the ceiling above.

This object is achieved in an aforementioned light ceiling by the characterizing features of claim 1.

It is provided that each retaining element has at least one Absenkeinheit to which the respective lamp element is reversibly releasably secured and stored swiveled down and by which the respective lamp element is lowered at least on one side in relation to its initial position recessed position.

Due to the fact that the lighting element of the holding elements is easily solvable and can be swung down, basically a very simple way is offered to get behind the light ceiling to the ceiling above it access. However, such pivoting is not possible if the distance between two adjacent lighting elements is very low. However, a small distance is in turn a prerequisite for the luminous ceiling to provide a uniform overall picture with uniform illumination. In such a case, you can not pivot the individual lighting elements against each other or simply open down, because at such small distances, the adjacent lighting elements would lock each other or would make a pivoting Verunmöglichen. This is especially true if, as is customary in the case of illuminated ceilings, a tensioned translucent foil is arranged on the exit surface, which is illuminated by means of light behind it. In this case, namely, a possible pivot point is not in the lowest side edge of the respective lamp element, but above or in the mounted state above this lowest light exit surface or the plane of the film. In a pivoting about this further overhead rotation axis, however, the lowermost corner edge would be pivoted in opposite directions and would collide with the small distance to the adjacent lamp element with this or could even break due to the considerable weight or damage the adjacent lamp element.

For this reason, the invention further provides that the holding element has a Absekeinheit with which the respective lamp element is lowered at least on the side on which the later axis of rotation during pivoting, down, whereby it is in a respect to its starting position and located opposite the retaining element and the ceiling recessed position. The lowering takes place to such an extent that a free rotation or pivoting is possible and no contact between two adjacent lighting elements takes place.

This ensures easy and free access to the ceiling.

The holding elements thus ensure a triple function. Firstly, at each lowering unit, the luminaire element attached thereto can be lowered or brought into a lower position. Secondly, it is possible at each lowering unit, to unfold the lamp element down or pivot, because the lamp element is connected to the lowering unit and this side of the lamp element acts as a rotation axis. Third, with each lowering unit, it is possible to reversibly release the lamp element from the lowering unit, thereby allowing it to swing up on this side. A lowering unit can thus serve in the same way once as a bearing or rotary axis for the lamp element to be pivoted up and in the next case as a place where pivoting takes place and the access is made possible by the technician.

Further advantageous embodiments are described by the features of the dependent claims:

According to an advantageous further development of the luminous ceiling, it is provided that each luminaire element has a support frame, in particular aluminum profiles, that at least one luminous means, in particular a fluorescent lamp, is arranged in each luminaire element and / or that at the light exit surface of the luminaire element a, preferably translucent, foil is arranged. As already mentioned, the above-mentioned problems exist, in particular, when a sensitive and destructive film is arranged at the light exit surface of the luminaire element, such a designed luminous ceiling certainly being one of the most visually beautiful and attractive shapes.

An advantageous embodiment of the lowering unit provides that it comprises at least two mutually adjustable and displaceable parts in the longitudinal direction. This solution represents a very simple way of lowering.

According to a further advantageous embodiment, it is provided that the upper part is firmly and directly attached to the support member and the lower part is reversibly detachable, preferably fastened by a quick release on the lamp element or on the support frame. This ensures that each lamp element is firmly and securely attached to the support member, but at the same time can be easily and quickly released for pivoting.

In this context, it is particularly advantageous to provide that the lower part is pivotally mounted on the upper part, whereby displacements during the lowering process can be compensated without the light elements twisting. Likewise, it is advantageous if the lower part is pivotably mounted on the lamp element or on the support frame.

A particularly advantageous mechanical embodiment is characterized in that the upper part is designed as a set screw with external thread on which an actuator with internal thread is arranged translationally displaceable, wherein the lower part is pivotally connected to this actuator. In this way, a manual lowering can be easily and quickly made.

According to an advantageous embodiment of the invention can be provided that the actuator has at least one laterally projecting extension and the lower part has a longitudinal recess into which engages the extension and in which the extension is guided translationally displaceable. Since a plurality of holding elements are usually arranged on each side surface of the lamp element, can be ensured by the formation of the longitudinal recess that a technician who can not operate and lower all lowering units at the same time, the reduction stepwise or in turn can make. In this case, shifts in a certain holding element or a certain Absenkeinheit that has not been operated by the technician, when lowering the lamp element of the extension in the longitudinal recess first down and then, as soon as the technician also operates this particular Absenkeinheit back into a upper position.

According to a further advantageous embodiment, it is provided that at least one undetachably connected to the support frame holding part is provided in the lowermost end portion of the lower part, wherein the holding part preferably engages slidably in a corresponding rail of the support frame, and wherein the lower part by a quick release from the holding part and thus is detachable from the support frame.

Due to the displaceability of the retaining element relative to the lamp element a more flexible and stress-free assembly is possible and inaccuracies can be better compensated. The fact that the holding part permanently remains in the support frame, a secure hold of the lamp element is ensured at the same time.

In this context, it is advantageous if it is provided that in the lowest end region of the lower part, a rotatable axle is arranged, with which the holding part or the support frame is connected and on which the lamp element is pivotally mounted. In this way, a particularly good pivotability of the lamp element is ensured.

A particularly advantageous retaining element results from the fact that the retaining element is symmetrical with respect to a longitudinal plane or cutting plane and each retaining element has exactly two opposing Absenkeinheiten. On this two adjacent lighting elements can be connected to each other at a small distance.

In order to provide an optically uniform and shadow-free illuminated ceiling, it is advantageous if the lateral distance between the lowermost side edges of two adjoining lighting elements is less than 15 mm, preferably less than or equal to 10 mm.

In this context, it is advantageous if it is provided that each lowering unit is manually adjustable and the lowering unit is accessible by the distance between the lamp elements.

A secure and permanent installation of the light ceiling on the corner of the room is particularly well possible if each holding element has at least one fastening means, for example a bracket or a rail, with which the holding element and thus the entire light ceiling on the ceiling or on the ceiling spaced support structure is fastened.

An advantageous embodiment of the light ceiling is characterized in that the film is held tensioned by means of clamping means, for example a tension spring or a clamping screw, with each light element, wherein the film is deflected in the edge regions of the light exit surface via an edge upwards. Such lighting elements are borderless in a certain way and do not cast any significant shadows, creating a uniform lighting ceiling.

In this context, it is particularly advantageous if the edge is formed of a transparent element, preferably on acrylic glass (PMMA), wherein the transparent element is preferably formed as a rectangular or wedge-shaped rail. This ensures light transmission from one luminaire element to the next, as a result of which the intervening gap or gap becomes optically smaller and the illumination of the luminous ceiling becomes uniform, resulting in an attractive overall image.

Further advantages and embodiments of the invention will become apparent from the description and the accompanying drawings.

• Fig. 1 zeigt eine erfindungsgemäße Lichtdecke im Querschnitt im Montagezustand.
• Fig. 2a und 2b zeigen den Absenkvorgang.
• Fig. 3 zeigt den Vorgang des Verschwenkens.
• Fig. 4 zeigt eine Seitenansicht eines Halteelementes.
• Fig. 5 zeigt eine dreidimensionale Sicht des Halteelementes.

The invention is illustrated schematically with reference to a preferred embodiment in the drawings and will be described below with reference to the drawings, for example.

• Fig. 1 shows a light ceiling according to the invention in cross section in the assembled state.
• Fig. 2a and 2b show the lowering process.
• Fig. 3 shows the process of pivoting.
• Fig. 4 shows a side view of a holding element.
• Fig. 5 shows a three-dimensional view of the holding element.

In Fig. 1 a cross-section of a light ceiling 1 according to the invention is shown schematically. In the middle, a holding element 3 is arranged, which has a lowering unit 4 on both sides of a longitudinal or sectional plane 17. At this lowering unit 4, a support frame 7 of a lamp element 2 is fixed in each case. The support frame 7 is usually made of rigid aluminum profiles and is in Fig. 1 as well as the Fig. 1 to 5 shown in detail in the lower area, but only schematically indicated by a line in the upper area. In Fig. 5 a different construction of the support frame 7 is shown. In the interior of each luminaire element 2, at least one luminous means 5, usually a fluorescent lamp, is arranged. At the bottom, facing the ground in the assembled state, the light exit surface of the lamp element 2 is a translucent and optionally colored, film 6 stretched. This film 6 is illuminated from behind by the bulbs 5 and produces a uniform uniform light. The film 6 is recognizably deflected in the edge regions of its horizontal position by an angle of about 90 ° and is held by a tensioning means 9 to tension. In Fig. 1 the tensioning means 9 is a tension spring. This is releasably secured to the support frame 7, whereby an exchange of the film 6 can be done by unclamping. In Fig. 5 the film 6 is held by a piping and a piping rail with a clamping rail on train. In both cases, this results in a rimless appearance of each lamp element. 2

In Fig. 1 is the light ceiling 1 and the adjacent lighting elements 2 in a position as would be the case with a closed ceiling light. Between the lowermost corner edges of the adjacent luminaire elements 2, specifically in the area in which the foils 6 are deflected, the two luminaire elements 2 are spaced at a distance 8. This should be as small as possible for optical reasons and is about 10 mm in size. This distance is a good compromise, on the one hand small enough to avoid disturbing shadow effects and on the other hand is large enough to ensure a certain movement of the two lamp elements 2 to each other.

Each lamp element 2 is reversibly and non-destructively releasably attached to the support member 3. This ensures on the one hand that the lighting element 2 safely and firmly remains in the light ceiling 1 and on the other hand, however, can be removed at any time by the technician and opened in succession to get to the underlying ceiling.

In Fig. 5 the holding element 3 and the two lamp elements 2 is shown in a perspective view, wherein in Fig. 5 the left lamp element 2 in a top, not yet lowered position, and the right light element 2 already in a maximum downwardly lowered position.

Each holding element 3 has two lowering units 4, which are arranged on the opposite sides of the holding element 3. Each lowering unit 4 consists in the embodiment shown here of two parts, namely an upper part 4a and a lower part 4b. The two parts 4a and 4b are mutually adjustable or displaceable in the longitudinal direction.

The upper part 4a is fixed and fixed directly to the upper part of the holding member 3. In addition, the upper part 4a is also firmly and rigidly attached to the holding element 3 at its lower region, whereby a secure guidance is ensured. In the present example, the upper part 4a is an adjusting screw 4a with external thread. On the adjusting screw 4a a cuboidal actuator 16 is arranged with a continuous recess with internal thread, which is mounted translationally displaceable on the adjusting screw 4a. To adjust the actuator 16 along the upper part 4a and the adjusting screw 4a, a screw opening 15 is provided. This screw opening 15 can be achieved through the gap or distance 8 through from outside the light ceiling 1 by means of a longer Allen key. By turning this screw 15, the actuator 16 moves up or down along the screw 4a.

The actuator 16 has two protruding from the opposite side surfaces or projections 11. These two extensions 11 engage in a longitudinal recess 13 of the lower part 4b. In Fig. 1 or in the left part of the representation of Fig. 5 is the extension 11 in the respective uppermost point of the longitudinal recess 13 and in the non-lowered state. In this way, the lower part 4b is already pivotable in this position relative to the upper part 4a or the holding element 3, whereby certain tolerances can be compensated.

In the right part of the Fig. 5 is the lamp element 2 in already maximum lowered state. Again, the extension 11 is in its uppermost position of the longitudinal recess 13 and the lamp element 2 hangs on these extensions 11. Also in this position, the lower part 4b is pivotable relative to the upper part 4a.

In the lowermost end region of the lower part 4b, the lower part 4b is connected to the support frame 7 of the luminaire element 2. This is done by two, on both sides of the lower part 4b arranged holding parts 14. These two holding parts 14 engage in a corresponding recess or rail of the support frame 7 and are held therein non-positively. Nevertheless, a lateral or lateral displaceability of the holding parts 14 and thus of the lower part 4b is ensured along this rail, which also inaccuracies in the assembly can be compensated. The two holding parts 14 are connected via a rotatable shaft 12 with the lower part 4b. In this way, the important pivotability of the lamp element 2 takes place.

About a quick release, not shown, the lower part 4b and the axis 12 can be reversibly solved by the holding parts 14 and thus from the support frame 7 at any time, whereby the lamp element 2 can be folded at this edge or on this side down.

The holding elements 3 thus ensure a triple function. Firstly, the luminaire element 2 fastened to each lowering unit 4 can be lowered or moved to a lower position. Secondly, it is possible at each lowering unit 4, the lamp element 2 to unfold down or to pivot, because the lamp element 2 is connected to the lowering unit 4. Third, with each lowering unit 4, it is possible to detach the lighting element 2 from the lowering unit 4, which also makes it possible to swing open. A lowering unit 4 can thus serve in the same way once as a bearing or rotary axis for the aufzuschwenkende lamp element 2 and in the next case as a place where the swinging takes place and the access is made possible by the technician.

In Fig. 2a and 2b the individual steps of lowering are shown. Fig. 2a is essentially the same Fig. 1 , the light ceiling 1 is in the closed state. Both lowering units 4 are in the shortest possible state, the actuator 16 is in each case in its highest position or the parts 4a and 4b are to a certain extent in one another. The lowering is now done by turning the screw 15, whereby the actuator 16 moves downward, in a position 16 'according to Fig. 2b , The position according to Fig. 2b corresponds to the position of the right side in Fig. 5 , The luminaire element 2 'is now in a recessed position relative to the non-lowered right luminaire element 2. On the opposite side no lowering was made, whereby the film 6 'is inclined in comparison to the film 6. This is possible because the lower part 4b is mounted pivotably both with respect to the upper part 4a and with respect to the support frame 7. It is not necessary that the lowering takes place uniformly or at all positions simultaneously.

Fig. 3 shows the step of pivoting or unfolding a lamp element. 2 Fig. 3 is not immediately the next step of Fig. 2b because the pivoted lamp element 2 is on the other side. In Fig. 3 is, however clearly recognizable that the now swung lamp element 2 was originally located in a maximum lowered state in which the upper part 4a and the lower part 4b were maximally elongated. The unfolded down lighting element 2 was in his in Fig. 3 not shown opposite area solved by loosening the quick release from the local holding element 3 and pivoted into the position shown here. The axis of rotation is the axis 12. It can be seen that by the fact that the axis of rotation 12 is not arranged in the corner region of the lamp element 2, but is offset inwardly, the edge 10 performs an opposite rotation or movement and requires a certain range of motion. By the large-scale lighting elements 2 here act very large leverage and can cause the slight movement of this edge 10 in this area to large destruction, if their movement is hampered by something. Would you like the rotation in a non-lowered state according to Fig. 1 enforce, it would be a collision with the adjacent light element 2.

In Fig. 4 is a side view of the support member 3 is shown.

The film 6 is deflected in the region of its edge over a transparent element 10, for example of acrylic glass. As in Fig. 1 shown, this element can be a cuboid rail or as in Fig. 5 shown to be a wedge-shaped rail. Due to the translucency of this rail 10, a shadow is further reduced in the region of the gap 8. However, these rails 10 are quite sensitive and fragile areas, with all the more attention must be paid to pivoting on these areas.

On the holding element 3 fastening means 18 are mounted in the form of brackets or ironing rails, via which each retaining element 3 can be attached to the ceiling or on a space spaced from the ceiling support structure. The holding elements 3 thus represent the connection of the light ceiling 1 to the ceiling.

A technician who now wanted to gain access to the area behind the light ceiling 1 or to the ceiling in the luminous ceiling according to the invention would now proceed as follows:

In a first step, it would insert an Allen wrench through the gap 8 into the region between the two luminaire elements 2 and, by turning on the Schaubbe 15, first lower the luminaire element 2 at a first position. In general, two or three evenly distributed over the length retaining elements 3 are arranged on each side surface of each lamp element 2, and this each on opposite sides. If three retaining elements 3 per side are provided in the example case, the skilled person would first lower the outer two, by by turning the hex wrench, the actuator 16 along the screw 4a screwed down. The luminaire element 2 would lower with the same, since it is supported by the extensions 11. Since the person skilled in the art can not actuate several lowering units 4 at the same time, the extension 11 shifts downwards along that longitudinal recess 13 in the case of that holding element 3 which is still in the uppermost position. As soon as the specialist has set all three lowering units 4 in the maximum lowermost position, this part of the lighting element 2 is now in a recessed position. Subsequently, the expert turns to the opposite side and would solve there the three quick-release fasteners and thus solve the connection between the support members 3 and the support frame 7. Then he could flip the lamp element 2 down, with the axis of rotation is in the lowered area and in this area enough space is available that the edge can rotate freely.

The luminaire element 2 advantageously has a Plexiglas profile along its end edge region or along the front end edge, e.g. a Plexiglas strip or strip or a metal profile, in particular metal strip, with recesses for the passage of light, in particular inserted into the end region, which profiles project beyond the end edge region of the base profile. If it is intended to illuminate over the end edge region of the base profile in its side areas or stretched over side areas of the fabric, these features are beneficial.

According to a further advantageous embodiment, it is provided that the Plexiglas profile has an end region directed into the inner region of the recess and an end region received by the base frame, wherein the end region directed into the inner region and the end region received by the base frame merge into a profile section projecting beyond the end edge region of the base profile. As a result, a simple type of light deflection is achieved around the end edge region of the base profile and results in a high-intensity illumination of the angled side regions of the tension cloth.

Claims (15)

Luminous ceiling (1) formed from a plurality of each adjacent at a small distance lamp elements (2), which are connected via between the lamp elements (2) holding elements (3) with each other and with the ceiling, characterized in that each holding element (3) via at least one Lowering unit (4) has, at which the respective lamp element (2) reversibly releasably secured and swiveled down and by which the respective lamp element (2) at least on one side in relation to its starting position and the retaining element (3) recessed position is lowered. Luminous ceiling according to claim 1, characterized in that each luminaire element (2) has a support frame (7), in particular of aluminum profiles, that in each luminaire element (2) at least one lamp (5), in particular a fluorescent lamp, is arranged and / or at the light exit surface of the lamp element (2), a preferably translucent, film (6) is arranged. Luminous ceiling according to one of claims 1 or 2, characterized in that the lowering unit (4) comprises at least two parts (4a, 4b) which are adjustable or displaceable relative to one another in the longitudinal direction. Luminous ceiling according to claim 3, characterized in that the upper part (4a) fixedly and directly on the holding element (3) is fixed and the lower part (4b) reversibly detachable, preferably by a quick release on the lamp element (2) or on the support frame ( 7) can be fastened. Luminous ceiling according to claim 3 or 4, characterized in that the lower part (4b) on the upper part (4a) and / or on the lamp element (2) or on the support frame (7) is pivotally mounted. Illuminated ceiling according to one of claims 3 to 5, characterized in that the upper part (4a) is designed as an adjusting screw (4a) with an external thread on which an actuator (16) with an internal thread is arranged translationally displaceable, wherein the lower part (4b) with this actuator (16) is pivotally connected. A light ceiling according to claim 6, characterized in that the actuator (16) has at least one laterally projecting extension (11) and the lower part (4b) has a longitudinal recess (13) into which the extension (11) engages and in which the extension (11) is guided translationally displaceable. Luminous ceiling according to one of claims 3 to 7, characterized in that at least one non-releasably connected to the support frame (7) holding part (14) is provided in the lowermost end region of the lower part (4b), wherein the holding part (14) is preferably displaceable in a corresponding Rail of the support frame (7) engages, and wherein the lower part (4b) by a quick release of the holding part (14) and thus of the support frame (7) is releasable. Luminous ceiling according to one of claims 3 to 8, characterized in that in the lowest end region of the lower part (4b) a rotatable shaft (12) is arranged, with which the holding part (14) or the support frame (7) is connected and at the the lamp element (2) is mounted pivotably. Luminous ceiling according to one of claims 1 to 9, characterized in that the holding element (3) with respect to a longitudinal plane or sectional plane (17) is symmetrical and each holding element (3) has exactly two opposing lowering units (4). Luminous ceiling according to one of claims 1 to 10, characterized in that at least on two opposite sides of a lamp element (2) at least two holding elements (3) are arranged. Luminous ceiling according to one of claims 1 to 11, characterized in that the lateral distance (8) between the lowest side edges of two adjacent luminous elements (2) is in each case less than 15 mm, preferably less than or equal to 10 mm. Luminous ceiling according to one of claims 1 to 12, characterized in that each lowering unit (4) is manually adjustable and the lowering unit (4) by the distance (8) between the lamp elements (2) is accessible. Luminous ceiling according to one of claims 1 to 13, characterized in that each holding element (3) at least one fastening means (18), for example a bracket or a profile rail, with which the holding element (3) and thus the entire light ceiling (1) on the ceiling or on a space spaced from the ceiling supporting structure can be fastened. Luminous ceiling according to one of claims 1 to 14, characterized in that in each luminaire element (2) the film (6) via clamping means (9), for example a tension spring or a clamping screw, is kept taut, wherein the film (6) in the edge regions the light exit surface is deflected over an edge upwards, wherein it is preferably provided that the edge of a transparent element (10), preferably on acrylic glass (PMMA) is formed, wherein the transparent element (10) preferably as a parallelepiped or wedge-shaped rail is trained.

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