EP1832803A1 - Illumination device - Google Patents

Abstract

The device has a long elongated housing (3) with two wall sections (6, 7) that are provided laterally with respect to a base section (5) of the housing. The housing has a detachable cover (8) that is partially made of a transparent material. A retainer (11) fastens a flexible, long elongated illuminant (10) to the housing. The illuminant exhibits multiple light sources that are arranged parallel to each other, where the light sources are arranged within the illuminant. Independent claims are also included for the following: (1) an illumination arrangement with an illumination device (2) a method for installing an illumination device in a building.

Description

The present invention relates to a lighting device. From the prior art, the most diverse lighting devices are known. These lighting devices are partially mounted on ceilings or on walls for direct or indirect lighting of rooms. In this case, the lighting devices of the prior art are attached to a surface such as a ceiling and thus protrude significantly into the room.

Often, however, there is a customer request for flat and inconspicuous lighting devices or lighting devices that are installed harmoniously in ceilings or wall elements and thereby protrude little into the room.

The present invention is therefore based on the object to provide a lighting device available that can be integrated directly into wall or ceiling elements and thereby protrudes only slightly into the respective space to be illuminated. Furthermore, the present invention has the object to provide a lighting device available, which can be extended depending on the customer and particularly advantageous curved or can be performed around corners.

This is inventively achieved by a lighting device according to claim 1. Advantageous embodiments and further developments are the subject of the dependent claims. It should be noted, however, that not all the objects of the invention necessarily be achieved by the objects of all claims.

The lighting device according to the invention has an elongated housing, wherein the housing has a bottom section, at least two lateral wall sections with respect to the bottom section and a removable cover and wherein the cover consists at least partially of a transparent material. Furthermore, at least one holder for fixing a luminous element to the housing is provided, wherein the luminous element has an elongated shape and is bendable.

An elongated housing is understood to mean a housing which extends in a predetermined spatial direction by a predetermined amount and in a direction perpendicular thereto by a significantly smaller amount.

The floor section is understood in particular to be that section which is in contact with a wall or floor element. However, other sections of the housing may be in communication with a wall or floor section.

The wall portions are preferably arranged on the bottom portion, but it is also possible that the wall portions are arranged on the lid, or are integrally connected to the lid and in this way the lid relative to the bottom portion can be locked.

Also, the luminous element has an elongated shape, that is, it extends in a spatial direction to a much higher degree than in other spatial directions. Under bendable is understood that the body is bendable at least in its direction of extension and preferably in its circumferential direction. Preferably, the luminous body has a cross section selected from a group of cross sections including circular cross sections, elliptical cross sections, polygonal cross sections, and the like.

By using a bendable filament this filament can be particularly advantageously fitted into the housing and in this way a low height of the housing is possible. Furthermore, it is achieved by the bendability of the luminous element that the lighting device is individually adapted to the spatial requirements and also around corners or curved can be performed.

In a preferred embodiment, the lighting device has a plurality of holders. In this case, the filament is held by all these brackets each with respect to the housing. Particularly preferably, the holders are substantially equidistant from each other.

In a further preferred embodiment, the holder is attached to the bottom portion and has a substantially U-shaped inner cross-section. By choosing this inner cross-section can be achieved that the distance between the luminous element and the bottom portion is very low and also in this way the height of the entire lighting device can be kept low.

In a further preferred embodiment, the luminous element is divisible. This means that individual segments, for example in the event of failure of individual lighting elements, can be removed and replaced by new segments. Also, the filament can be kept variable in length and thus also adapted to the spatial needs.

The luminous body preferably has a multiplicity of light sources connected in parallel with one another. Particularly preferably, these light sources are light-emitting diodes, which in particular but not exclusively emit white light. However, it is also possible that the LEDs emit light of other colors. Also, different light sources can emit light of different wavelengths. Instead of light-emitting diodes, however, incandescent lamps can also be used.

The luminous body particularly preferably has such a circuit arrangement that, even if individual light sources fail, the luminous body otherwise continues to illuminate.

In a further preferred embodiment, the light sources are arranged within the filament such that their longitudinal directions are substantially parallel to the plane of the bottom portion. Even if the light sources are light-emitting diodes, they are arranged on the luminous element such that their longitudinal directions extend substantially parallel to the plane of the bottom section. Also in this way can be contributed to a reduction in the height of the lighting device and thus to space savings.

Advantageously, two current-carrying lines are provided and the light sources are arranged so that the longitudinal directions of the light sources extend between the power supply lines. In this way, the height of the filament can be kept low and thus the height can be minimized.

The cover is preferably transparent over substantially the entire surface lying above the luminous element. It is possible that the cover perceives a Streussibenbeziehungsweise screen function or is completely transparent, which can be adjusted depending on the customer. Also, the lid can be kept in a variety of colors.

Preferably, the device has a height between 0.5 cm and 10 cm, preferably between 0.7 cm and 8 cm, and particularly preferably between 1 cm and 5 cm. Due to this low height, the lighting device is particularly suitable for installation in ceilings, tiles or floor elements.

In a further preferred embodiment, at least one holding rail is arranged on the bottom portion, which adjoins the bottom portion and particularly preferably extends substantially in the plane of the bottom portion. Through this retaining rail, it is possible to install the device, for example, between tile elements, since in this way the retaining rail is arranged below the tiles. A laying of the device under plaster is possible in this way.

However, it is also possible that the retaining rail does not extend in the plane of the bottom portion, but at a different angle. In this way, the lighting device can also be attached to corners or curved surfaces. Particularly preferably, the device has two retaining rails, which adjoin the bottom portion. In a further preferred embodiment, the housing has at least partially reflective surfaces on its inner surface. In this way, a higher light output is possible.

The present invention is further directed to a lighting arrangement with a lighting device of the type described above. Preferably, at least two lighting devices are provided, the longitudinal directions of which extend in two different directions. In this way it is possible to represent geometric shapes such as rectangles through the lighting arrangement. It is also possible, for example, that a lighting device is guided on one or as a bottom bar and another part of the lighting arrangement in a corner edge, which adjoins the bottom bar.

In a further preferred embodiment, an angle element is provided between two lighting devices. This angle element serves to achieve a harmonious transition between the two lighting devices. The luminous element is also guided within this angle element and thus preferably curved. Preferably, the lighting device according to the invention is used for indirect lighting of rooms, but also embodiments are conceivable in which rooms are illuminated directly.

The present invention is further directed to a method for installing a lighting device of the type described above, wherein the lighting device is at least partially installed under plaster. It is also possible to lay the lighting device under tiles or under floor strips. Preferably, retaining rails of this lighting device are laid under plaster or under tiles.

Fig. 1

eine schematische Draufsicht auf eine erfindungsgemäße Beleuchtungsvorrichtung in einer ersten Ausführungsform;

Fig. 2

eine Draufsicht auf eine Beleuchtungsvorrichtung in einer zweiten Ausführungsform;

Fig. 3

eine Draufsicht auf eine Beleuchtungsvorrichtung in einer dritten Ausführungsform;

Fig. 4

eine Draufsicht auf eine Beleuchtungsvorrichtung in einer vierten Ausführungsform;

Fig. 5

eine Draufsicht auf eine Beleuchtungsvorrichtung in einer fünften Ausführungsform;

Fig. 6

eine Draufsicht auf eine erfindungsgemäße Beleuchtungsvorrichtung;

Fig. 7

eine Schrägansicht einer erfindungsgemäßen Beleuchtungsvorrichtung;

Fig. 8

eine perspektivische Schrägansicht einer erfindungsgemäßen Beleuchtungsvorrichtung;

Fig. 9

die Beleuchtungsvorrichtung aus Figur 6 in einem eingebauten Zustand;

Fig. 10

die Beleuchtungsvorrichtung aus den Figuren 2 und 5 in einem eingebauten Zustand;

Fig. 11

die Beleuchtungsvorrichtung aus Figur 4 in einem eingebauten Zustand;

Fig. 12

die Beleuchtungsvorrichtung aus Figur 3 in einem eingebauten Zustand;

Fig. 13

eine Draufsicht auf einen Leuchtkörper in einer bevorzugten Ausführungsform;

Fig. 14

eine perspektivische Darstellung eines Leuchtkörpers aus Figur 13 und

Fig. 15

ein Winkelelement und ein Verbindungselement für eine erfindungsgemäße Beleuchtungsanordnung.

Further advantageous embodiments will become apparent from the accompanying drawings. Show:

Fig. 1

a schematic plan view of a lighting device according to the invention in a first embodiment;

Fig. 2

a plan view of a lighting device in a second embodiment;

Fig. 3

a plan view of a lighting device in a third embodiment;

Fig. 4

a plan view of a lighting device in a fourth embodiment;

Fig. 5

a plan view of a lighting device in a fifth embodiment;

Fig. 6

a plan view of a lighting device according to the invention;

Fig. 7

an oblique view of a lighting device according to the invention;

Fig. 8

an oblique perspective view of a lighting device according to the invention;

Fig. 9

the lighting device of Figure 6 in an installed state;

Fig. 10

the lighting device of Figures 2 and 5 in an installed state;

Fig. 11

the lighting device of Figure 4 in an installed state;

Fig. 12

the lighting device of Figure 3 in an installed state;

Fig. 13

a plan view of a luminous element in a preferred embodiment;

Fig. 14

a perspective view of a filament of Figure 13 and

Fig. 15

an angle element and a connecting element for a lighting arrangement according to the invention.

FIG. 1 shows a lighting device 1 according to the invention in a schematic plan view. This lighting device 1 has a housing 3, in which an elongated luminous element 10 is arranged. The housing has a bottom portion 5 as well two lateral wall sections 6, 7. In this embodiment, the wall sections 6, 7 extend with respect to the bottom section in a substantially vertical direction. However, this is not absolutely necessary, but the wall sections can also extend in an angle deviating from 90 °. On the wall sections 6,7 a lid 8 is arranged made of transparent material.

This cover 8 has a strongly curved profile in this embodiment. In other embodiments, however, it would also be conceivable to make the lid flat or with a different curvature from that shown in FIG.

The lid 8 has holding elements 21, which serve to hold the lid to the wall sections 6, 7. In order to achieve this hold, retaining lugs 23 are arranged on the wall sections 6, 7 and correspondingly opposite retaining lugs 24 in holding elements 21. In this way it is achieved that the lid is held on the one hand, but on the other side of the bottom portion 5 is removable. Instead of the retaining lugs shown here, other connections are conceivable, such as engaged rails or the like.

The reference numeral 11 refers to a holder that holds the filament 10 relative to the bottom portion and thus relative to the housing 3. In the embodiment shown here, the holder 11 has a substantially circular inner profile, in which the filament 10 rests. However, it is also possible to keep the section 11a below the luminous element very small, or to omit it entirely, that is, to clamp the luminous element substantially between the lateral sections 11b and 11c of the holder 11. In this way, the luminous element 10 can be brought closer to the bottom section and a reduction in the overall height of the entire device 1 can be achieved.

The embodiment shown in Figure 2 differs from the embodiment shown in Figure 1 substantially by two support rails 16 which extend obliquely downwards from the bottom portion 5. These support rails 16 serve to be able to attach the lighting device 1 to a building or room corner, as will be explained below with reference to Figure 10.

FIG. 3 shows a further embodiment of a lighting device according to the invention. In contrast to the embodiment shown in FIG. 1, this embodiment is asymmetrical and serves for installation on or instead of a bottom strip, as will be explained with reference to FIG. However, in the case of the embodiment shown in FIG. 3, a retaining rail 16 may also be provided, which in FIG. 3 would extend upwards starting from the bottom section 5, in order to facilitate installation in this way.

FIG. 4 shows a further embodiment of a lighting device according to the invention. In this embodiment, the support rails 16 extend substantially in the plane of the bottom portion 5. Thus, this embodiment is particularly suitable for installation on walls, for example under plaster or under tiles. In this case, the support rails 16 are inserted under the tiles. The support rails 16 have thicknesses of a few millimeters. The entire housing could be made of a metal such as aluminum, but it is also possible that the housing or the bottom portion and the wall portions are made of a plastic, such as PEEK, POM, PET and the like.

FIG. 5 shows a further embodiment of the lighting device according to the invention. Also in this case, two retaining rails 16 are provided, which, however, extend obliquely upwards here. Thus, the lighting device shown in Figure 5 is also suitable for installation at corners, as shown with reference to Figure 10.

FIG. 6 shows a plan view of the illumination device according to the invention from FIG. 4. It can be seen that the illumination element 10 is a substantially elongated element that extends from one end of the illumination device to the other end thereof. Also, a plurality of holding elements 11 are provided, which are arranged here at regular intervals and hold the filament to the bottom portion. Furthermore, retaining rails 16 are provided, which serve for installation of the lighting device, for example, under tiles or on wall sections. Reference numeral 18a refers to an end or connecting element. On the one hand, current can be supplied to the filament at this position; on the other side, the connecting element 18a can also serve to connect further illuminating devices to the illuminating device shown in FIG.

FIG. 7 shows a perspective view of the illumination device from FIG. 6. It can be seen that the retaining rails 16 here have triangular-shaped recesses 16a, which on the one hand serve to save weight and on the other hand increase the rigidity. Furthermore, the wall sections 6 and 7 are also shown here, which serve to hold the lid to the housing.

FIG. 8 shows a perspective view of the lighting device shown in FIG. It is basically possible that the lid 8 and the holding elements 21 are made in one piece, which reduces the total cost of production.

FIG. 9 shows a lighting device according to the invention in an installed state. In this case, a plurality of tiles is shown, which are placed on the support rails 16 and hold in this way the support rails and thus the lighting device on the wall.

FIG. 10 shows the lighting device shown in FIG. 2 and the lighting device shown in FIG. 5, each in a state installed on a wall or wall 26. It can be seen that the respective support rails 16 can be laid under plaster or under tiles, in order to install in this way the lighting device in corners or at edges.

FIG. 11 shows a lighting device from FIG. 9 in the likewise installed state. It can be seen that the holding portions 26 are under a plaster layer 26a and the cover 8 rests on the plaster layer 26a. It would also be possible for this embodiment, the cover 8 with a different curvature or even in the extreme case flat, in which way the lighting device can be kept even slimmer.

FIG. 12 shows a lighting device shown in FIG. 3 in a built-in state. In this case, it is a floor element that can be installed instead of a floor strip or together with a floor strip. Correspondingly, installation in a transition 16 between a wall and a ceiling would also be possible.

FIG. 13 shows a cross section of a luminous element in an advantageous embodiment. In this case, the luminous body on a plurality of light sources 12, which here at Light emitting diodes act. These light-emitting diodes are arranged so that their longitudinal direction L extend in the plane of the bottom section 5. By this arrangement it can be achieved that the luminous element 10 has an overall elliptical or rectangular profile. In this way, further, as stated above, the overall height of the entire device can be reduced. Via supply lines 14 and 15, the individual light sources power is supplied. In this case, the light source is arranged substantially between these two feeders 14 and 15.

FIG. 14 shows a perspective view of the filament shown in FIG. In this embodiment, the reference numerals 17a and 17b are carriers or stabilizing elements. The supply lines 14, 15 are arranged on these stabilization elements 17a and 17b, whereby they are also provided on the right or left side with respect to the light sources 12. In addition to the light sources, other electronic elements such as resistors or the like may be provided in the luminous element 10. FIG. 15 shows an angle element 18 and a connecting element 18a. This angle element 18 and the connecting element 18a also have holding elements 21 which can be inserted into the wall sections 6 and 7, respectively. The angle element 18 can be made on the one hand from a transparent material, but it is also possible that this angle element 18 is opaque. The same applies to the connecting element 18a.

All disclosed in the application documents features are claimed as essential to the invention, provided they are new individually or in combination over the prior art.

LIST OF REFERENCE NUMBERS

1

lighting device

3

casing

5

bottom section

6, 7

wall sections

8th

cover

10

illuminant

11

bracket

11a

Section below the filament 10th

11b, 11c

lateral section of the bracket

12

light sources

14, 15

leads

16

retaining rails

16a

recesses

17a, 17b

Stabilization elements

18

angle element

18a

connecting element

21

retaining elements

23, 24

retaining lugs

26

Wall or wall

26a

Rendering

L

Longitudinal direction of the light sources

Claims (10)

A lighting device (1) comprising an elongated housing (3), said housing having a bottom portion (5), at least two lateral wall portions (6, 7) relative to said bottom portion, and a removable lid (8) at least partially made of a transparent material consists, with at least one holder (11) for fixing a luminous body (10) on the housing, wherein the luminous body (10) has an elongated shape and is bendable. Device according to claim 1,
characterized in that
the luminous body (10) is divisible. Device according to at least one of the preceding claims,
characterized in that
the luminous body (10) has a multiplicity of light sources (12) connected in parallel to one another. Device according to at least one of the preceding claims,
characterized in that the light sources (12) are arranged within the filament (10) such that their longitudinal directions are substantially parallel to the plane of the bottom portion (5). Device according to at least one of the preceding claims,
characterized in that
two power supply lines (14, 15) are provided and the light sources are arranged such that the longitudinal directions of the light sources extend between the power supply lines. Device according to at least one of the preceding claims,
characterized in that
at least one holding rail (16) is arranged on the bottom portion (5), which adjoins the bottom portion and preferably extends substantially in the plane of the bottom portion. Lighting arrangement with a lighting device (1) according to at least one of the preceding claims Lighting arrangement according to claim 7,
characterized in that
at least two lighting devices (1) are provided, whose longitudinal directions extend in two different directions. Lighting arrangement according to claim 8,
characterized in that
an angle element (18) is provided between two lighting devices. Method for installing a lighting device according to at least one of the preceding claims, in particular in buildings,
characterized in that
the lighting device (1) is at least partially installed under plaster.

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