DE102014005062A1 - Lighting device for a mobile and an aircraft cabin with the lighting device - Google Patents

Abstract

The invention has for its object to propose a lighting device for a mobile whose variability and / or integration capability is improved. The invention relates to a lighting device 1 for a mobile, comprising a light-emitting layer composite 2, wherein the light-emitting layer composite 2 is bendable, the light-emitting layer composite 2 comprising first and second outer layers 2a, 2b and one between the first and second outer layers 2a, 2b arranged light emitting interlayer region 2c, wherein the first and the second outer layer 2a, 2b are each formed as a glass layer 2a, 2b.

Description

The invention relates to a lighting device for a mobile, having a light-emitting layer composite, wherein the light-emitting layer composite is formed bendable, wherein the light-emitting layer composite comprises a first and a second outer layer and a disposed between the first and second outer layer light-emitting interlayer region. The invention also relates to an aircraft cabin of the mobile with the lighting device.

Interior lighting is used to illuminate interiors of vehicles such. B. of aircraft. For example, the document describes DE 10 2008 036 470 A1 , which is probably the closest prior art, a flat, light-emitting lighting device for a vehicle. The flat, light-emitting lighting device comprises a surface light, a mains-independent power supply and a control device. The surface light consists of at least one first light-emitting OLED layer.

The invention has for its object to propose a lighting device for a mobile whose variability and / or integration capability is improved. This object is achieved by a lighting device with the features of claim 1 and by an aircraft cabin with the lighting device having the features of claim 10. Preferred or advantageous embodiments will become apparent from the dependent claims, the following description and the accompanying drawings.

The invention thus proposes a lighting device which is suitable and / or designed for a mobile. In particular, the lighting device is used to illuminate an interior of the mobile. Preferably, the mobile is an aircraft. Particularly preferably, the lighting device is to be arranged or arranged in an aircraft cabin. In particular, the lighting device is designed for direct or indirect illumination of the interior, in particular of the aircraft cabin.

The lighting device comprises a light-emitting layer composite. In particular, the layer composite comprises a plurality of layers connected in layers in a laminar manner. Particularly preferably, the layer composite is formed as a composite material. In particular, the light-emitting layer composite is designed for planar arrangement on a support structure in the mobile. The support structure may have planar and / or curved portions.

The light-emitting layer composite is formed in particular bendable in a planar extension. The light-emitting layer composite is flexible deformable by the flexibility, in particular formed reversible deformable. Thus, the light-emitting layer composite is convertible from a flat to a curved position. In this way, the arrangement of the light-emitting layer composite on the support structure with planar and / or curved sections is made possible. In a preferred embodiment of the invention, the light-emitting layer composite or its material has a modulus of elasticity which has a value of E <10 MPa, in particular a value of E <5 MPa.

The light-emitting layer composite comprises a first and a second outer layer. Between the first and the second outer layer, a light-emitting intermediate layer region is arranged, wherein the light-emitting intermediate layer region is designed for emitting light. The light-emitting interlayer region may comprise one or more surface interconnected intermediate layers. By way of example, the two outer layers are connected to one another in an integral manner with the intermediate layer region. In this case, it is possible that the outer layers are connected to the intermediate layer region at the edge, alternatively over the entire surface. Particularly preferably, the two outer layers are adhered to the intermediate layer region at least in sections.

Preferably, the first and / or the second outer layer are transparent. Thus, the light emitted from the intermediate layer region can be transmitted via the first and / or second outer layer. The light transmission is to be understood as a light transmission of at least 50 percent, in particular of at least 80 percent. In a mounting situation in the mobile, the first outer layer preferably forms an upper side of the light-emitting layer composite, in particular of the lighting device. It is further preferred that the second outer layer forms a side facing away from the upper side, in particular a lower side of the light-emitting layer composite. For example, the underside is suitable and / or designed for direct or indirect arrangement on the support structure in the module.

In the context of the invention, it is proposed that the first and the second outer layer are each formed as a glass layer. z. B. the glass layers are each transparent and / or translucent.

An advantage of the invention is that the lighting device is realized so bendable that it is in the form of a plurality of Can adapt support structures. For example, it is possible for the light-emitting layer composite to adapt to a curved section of the support structure by flexibly changing its shape and thereby being able to rest flat against the support structure.

A particularly notable advantage of glass compared to many plastics on the one hand is the good temperature resistance. For example, the glass layers are characterized by a temperature resistance up to 200 ° C, especially up to 300 ° C, in particular up to 400 ° C and / or by a temperature resistance to -20 ° C, especially to -30 ° C, in particular to -50 ° C off. On the other hand, molten glass releases no toxic pollutants, which is of considerable advantage to persons in the mobile in the event of a fire. Thus, the light-emitting layer composite according to the invention with the glass layers is outstandingly suitable for use in the aircraft sector, since the fire protection requirements applicable to aircraft, in particular the FST requirements (FST = Flame, Smoke, Toxicity) for aircraft cabins are met.

Another advantage is that it can be dispensed with further lighting devices that require additional space in the aircraft cabin.

It is preferred that the glass layers each have a thickness less than 0.3 mm, in particular less than 0.2 mm, in particular less than 0.1 mm. Advantageously, the glass layers can be subjected to bending stresses due to the thin formation and thus arranged on a multiplicity of supporting structures. Thus, a non-destructive bending of the light-emitting layer composite is possible.

A particularly preferred embodiment of the invention provides that the light-emitting layer composite is formed in the planar extension with a radius of curvature of the bend less than ten meters, in particular less than five meters, in particular less than one meter bendable. It is also possible for the light-emitting layer composite to adapt to freely curved surfaces. Thus, with the lighting device various installation situations can be operated, whereby the variability and / or the integration capability of the lighting device is increased.

As a result, it is possible that two such lighting devices, which are of identical construction, can be installed in the same application but in different installation situations, on support structures with different curvatures and / or different bends, and adapt differently to the surfaces. Thus, the lighting device is designed as a common part for different installation situations. This valuable property means that in equipping interiors with different installation situations not a variety of structurally different lighting devices are provided, but only a corresponding number of identical lighting devices are needed. This advantage continues with the supply of spare parts, as spare parts only need to be stocked for one type.

A preferred, product-related embodiment provides that the light-emitting layer composite in the planar extension has an area of at least five, in particular of at least ten, in particular of at least 25 square centimeters. Due to the minimum surface area, the lighting device is designed in particular as a planar light source, which achieves a uniform light emission. Particularly preferably, the light-emitting layer composite is designed as a large-area lamp having a surface area of at least one square meter in the planar extent. The large-size lamp achieved by their size z. B. in the aircraft cabin a pleasant lighting atmosphere.

In a preferred implementation of the invention, the light-emitting interlayer region comprises or is formed as at least one OLED section. Preferably, the surface area of the OLED portion comprises at least 80 percent of that of the first and / or the second outer layer. The OLED section is at least a partial section of at least one OLED (organic light-emitting diode). The OLED is a luminous thin-film component made of organic semiconducting materials. For example, the OLED section comprises at least one anode, one cathode, and an emitter layer arranged between the anode and cathode. Particularly preferably, the OLED section is designed as an OLED display. By way of example, the light-emitting layer composite comprises an electronic unit for supplying energy to the OLED section. Advantageously, the at least one OLED section is a large area and inexpensive, z. B. by means of offset printing produced.

Alternatively or optionally additionally, the light-emitting intermediate layer region comprises at least one electroluminescent section or is designed as this. The electroluminescent section is particularly preferably designed as an electroluminescent film, also known as a luminous film, light film or as a capacitor luminous film. Electroluminescence is the property of certain materials or combinations of materials Applying an electric field to emit light. The electroluminescent section preferably comprises two electrode layers and an electroluminescent layer arranged between the two electrodes, which isolates the electrode layers from one another. In particular, at least one of the electrode layers is translucent, so that a light transmission is implemented at least to one of the glass layers.

A further alternative or optional supplement provides that the light-emitting interlayer region comprises or is formed as at least one photoluminescent section. In particular, the photoluminescent section is brought into electronically excited energy states by a light absorption of primary light, wherein the photoluminescent section under the emission of secondary light again reaches energetically lower energy states. The secondary light emitted by the photoluminescent section is transmitted via one of the two glass layers, in particular via the upper side.

The emission of the secondary light by the photoluminescent section is effected in particular by spontaneous photon emission in the form of fluorescence or phosphorescence. Therefore, it is possible that the photoluminescent portion includes or is formed as a fluororphone layer. A particularly preferred embodiment provides that the photoluminescent section comprises or is formed as a phosphor layer.

In order to generate the light absorption and thus the emission of the secondary light by the photoluminescence section, a preferred embodiment provides that the illumination device comprises at least one light source which supplies the photoluminescence section with the primary light. For example, the at least one light source is arranged on one of the two outer layers, in particular on the underside. For example, the primary light light emitted by the light source is transmitted via the second outer layer to the photoluminescence section, which absorbs the transmitted primary light and then emits the secondary light, which in turn is transmitted by the first outer layer.

In the context of the development, it is preferred that the at least one light source is designed as an LED, particularly preferably as a blue LED. Furthermore, it is preferred that the photoluminescent section is designed to convert the primary light emitted by the at least one blue LED into secondary-colored secondary light, in particular into white light. Furthermore, it is preferable that the photoluminescent portion is formed as the phosphor layer which converts the blue light into the white light. The light-emitting layer composite achieved by the outsourced by the blue LED phosphor layer (Remote Phosphor) high efficiency, in particular a higher brightness with lower power consumption. Furthermore, a constant light intensity and color fidelity of the light-emitting layer composite is implemented.

From the structural design is preferred that the light-emitting layer composite has a thickness less than 0.5 mm, in particular less than 0.3 mm. This embodiment has the advantage that a compact design and a good flexibility of the light-emitting layer composite are achieved. By way of example, the light-emitting layer composite has a weight of less than 1000 g / m 2, in particular less than 750 g / m 2, at a thickness of 0.3 mm.

Another object of the invention relates to an aircraft cabin of a mobile with at least one lighting device according to the preceding description. The lighting device is suitable and / or designed for direct or indirect lighting in the aircraft cabin. Optionally, notes and / or imprints may be arranged on the lighting device, which are highlighted by the backlight and thus better perceived by aircraft passengers.

Preferably, the illumination device, in particular the light-emitting layer composite, is transferred from a flat to a curved position for placement on a curved support structure. For example, the support structure is provided for the lighting device mounting device in the aircraft cabin, z. B. can be arranged on a cladding wall of the aircraft cabin. Alternatively, the support structure through the cladding wall of the aircraft cabin or by the interior in the aircraft cabin, such. As doors, walls or storage compartments may be formed. The lighting device preferably has at least one square meter in its total area.

From the structural design is preferred that the illumination device, in particular the light-emitting layer composite is arranged in the curved position cohesively on the support structure. For example, one of the two outer layers, in particular the underside, is connected in a material-bonded manner to the support structure. The cohesive connection, in particular the adhesive bond proves to be particularly advantageous if the support structure and the light-emitting layer composite, in particular the outer layer to be joined, have a different thermal expansion coefficient. At a temperature change a different linear expansion of the support structure and the light-emitting layer composite can be compensated by the material connection.

Further features, effects and advantages of the invention will become apparent from the following description of preferred embodiments of the invention and the accompanying figures. Showing:

1a in three-dimensional representation, a lighting device in a flat position;

1b . 1c the lighting device off 1a in a curved position;

2 in a cross section a first possible embodiment of the lighting device from the 1 ;

3 in the cross section of a second possible embodiment of the lighting device of the 1 ;

4 an aircraft cabin with the lighting device according to the embodiments of 2 or 3 ,

Corresponding or identical parts are each provided with the same reference numerals in the figures.

1a shows a lighting device 1 , The lighting device 1 is suitable and / or designed for illuminating an interior cabin of a mobile. The lighting device 1 comprises a light-emitting layer composite 2 , which is designed to emit light to an environment of the inner cabin. The light-emitting layer composite 2 is provided in its planar extension for placement on a support structure, such. B. to a cladding wall or other interior of the interior of the car. The light-emitting layer composite 2 may have a surface area of at least five square centimeters in the areal extent. Furthermore, the light-emitting layer has composite 2 a thickness less than 0.5 mm.

The light-emitting layer composite 2 formed bendable, so that it can be transferred from a flat to a curved position. In this way, the light-emitting layer composite can 2 Apply flat to a large number of supporting structures. Consequently, an installation of the light-emitting layer composite 2 in the mobile with different curved positions possible. Purely by way of example shows the 1b the light-emitting layer composite 2 with a first and the 1c the light-emitting layer composite 2 with a second possible curved position.

2 shows a first possible embodiment of the lighting device 1 , The light-emitting layer composite 2 has a first and a second outer layer 2a . 2 B and one between the first and second outer layers 2a . 2 B arranged light emitting interlayer region 2c on. The outer layers 2a . 2 B can with the light-emitting interlayer region 2c be connected cohesively. The light-emitting interlayer region 2c is designed for light emission, wherein at least one of the two outer layers 2a . 2 B are designed for light transmission. The first outer layer 2a forms in a mounting situation in the mobile an upper side of the light-emitting layer composite 2 , The first outer layer 2a as the upper side is transparent, so that of the intermediate layer area 2c emitted light over the first outer layer 2a is transmitted. The second outer layer 2 B forms in the installation situation, a bottom of the light-emitting layer composite 2 , The second outer layer 2 B as the bottom is to be arranged directly or indirectly on the support structure.

The first and second outer layers 2a . 2 B are each formed as a glass layer. For example, the glass layers have a thickness less than 0.3 mm. The thin formation of the glass layers allows nondestructive flexibility of the glass layers at a radius of curvature of at least ten meters.

In this embodiment, the light-emitting interlayer region comprises 2c an electroluminescent section 2c or is designed as this. The electroluminescent section 2c may be formed as an electroluminescent film. For example, the electroluminescent section points 2c a thickness less than 0.2 mm. The electroluminescent section 2c comprises, for example, two electrode layers and an electroluminescent layer arranged between the two electrode layers, which isolates the electrode layers from one another. The light emission of the electroluminescent section 2c occurs over a large area and undirected, so that a pleasant atmosphere of light is created in the inner cabin. The light-emitting layer composite 2 with the electroluminescent section 2c is suitable for. B. for a backlight, emergency lighting or diffuse lighting.

Alternatively or optionally in addition to the electroluminescent section 2c includes the light emitting interlayer region 2c an OLED section 2c or is designed as this. The OLED section 2c includes one or a plurality of OLEDs. For example, the OLEDs are on at least one of the glass layers 2a . 2 B printed. The light-emitting layer composite 2 with the OLED section 2c is ideal for large-scale room lighting.

3 shows a second possible embodiment of the lighting device 1 , The lighting device 1 includes the two outer layers 2a . 2 B , formed as the glass layers, and the light-emitting interlayer region 2c , In this embodiment, the light-emitting interlayer region comprises 2c a photoluminescent section 2c or is designed as this. For example, the photoluminescent section includes 2c a phosphor layer or is formed as this. The photoluminescent section 2c is characterized by the fact that it is brought in light absorption of primary light L1 in electronically excited energy states, wherein the photoluminescent section 2c under the emission of secondary light 12 again energy-lower energy states reached. That of the photoluminescent section 2c emitted secondary light 12 is over the first outer layer 2a delivered to the environment.

The lighting device 1 includes at least one light source 3 , which is designed to emit the primary light L1. The at least one light source 3 is at least partially on the second outer layer 2 B arranged. For example, the at least one light source 3 with the second outer layer 2 B cohesively connected. In this embodiment, it is provided that the at least one light source 3 at least in sections, to be arranged on the support structure.

The second outer layer 2 B is to the light transmission of the light source 3 formed primary light L1, so that the primary light L1 to the light-emitting interlayer region 2 B is directed. By a light absorption of the primary light L1 is an excitation of the photoluminescent section 2c and thus the emission of secondary light 12 achieved.

For example, the at least one light source 3 as a blue LED 3 educated. The phosphor layer of the photoluminescent section 2c is formed by the blue LED 3 emitted primary light L1 in different colored secondary light 12 convert. Through the between the blue LED 3 and the photoluminescent section 2c arranged glass layer 2 B is the phosphor layer from the light source 3 spaced and thus outsourced. This outsourcing has on the one hand the advantage of high efficiency, on the other hand a uniform and constant light intensity and thus a pleasant room lighting.

4 shows an aircraft cabin 4 with the lighting device 1 , The lighting device 1 , in particular the light-emitting layer composite 2 is z. B. materially connected to the support structure. The cohesive connection proves to be advantageous, in particular in the case of temperature fluctuations and changes, since different coefficients of thermal expansion of the light-emitting layer composite by means of the cohesive connection 2 and the support structure can be compensated. An exemplary arrangement example shows the arrangement of the lighting device 1 on a panel wall 5 the aircraft cabin 4 , Likewise, in the aircraft cabin 4 an extra for the lighting device 1 provided mounting means may be provided, which in turn on the panel wall of the aircraft cabin 4 or on the interior of the aircraft cabin 4 is arranged. Another exemplary embodiment shows the arrangement of the lighting device 1 on the overhead storage compartments 6 , The lighting device 1 can be battery powered, alternatively or optionally supplemented via the electrical system of the aircraft.

LIST OF REFERENCE NUMBERS

1

lighting device

2

Light-emitting layer composite

2a

First outer layer

2 B

Second outer layer

2c

Interlayer region

3

light source

4

aircraft cabin

5

wall paneling

6

Overhead storage compartment

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102008036470 A1 [0002]

Claims (12)

Lighting device ( 1 ) for a mobile, with a light-emitting layer composite ( 2 ), wherein the light-emitting layer composite ( 2 ) is bendable, wherein the light-emitting layer composite ( 2 ) a first and a second outer layer ( 2a . 2 B ) and one between the first and second outer layer ( 2a . 2 B ) arranged light-emitting interlayer region ( 2c ), characterized in that the first and second outer layers ( 2a . 2 B ) each as a glass layer ( 2a . 2 B ) are formed. Lighting device ( 1 ) according to claim 1, characterized in that the glass layers ( 2a . 2 B ) each have a thickness less than 0.3 mm. Lighting device ( 1 ) according to claim 1 or 2, characterized in that the light-emitting layer composite ( 2 ) is formed bendable with a radius of curvature of less than ten meters. Lighting device ( 1 ) according to one of the preceding claims, characterized in that the light-emitting layer composite ( 2 ) in the planar extension has an area of at least five square centimeters. Lighting device ( 1 ) according to one of the preceding claims, characterized in that the light-emitting interlayer region ( 2c ) at least one OLED section ( 2c ). Lighting device ( 1 ) according to one of the preceding claims, characterized in that the light-emitting interlayer region ( 2c ) at least one electroluminescent section ( 2c ). Lighting device ( 1 ) according to one of the preceding claims, characterized in that the light-emitting interlayer region ( 2c ) at least one photoluminescent section ( 2c ). Lighting device ( 1 ) according to claim 7, characterized in that the lighting device ( 1 ) at least one blue LED ( 3 ), wherein the photoluminescent section ( 2c ) formed by the at least one blue LED ( 3 ) converted primary light (L1) in different colored light (L2) to convert. Lighting device ( 1 ) according to one of the preceding claims, characterized in that the light-emitting layer composite ( 2 ) has a thickness less than 0.5 mm. Aircraft cabin ( 4 ) of a mobile with at least one lighting device ( 1 ) according to any one of the preceding claims. Aircraft cabin ( 4 ) according to claim 10, characterized in that the light-emitting layer composite ( 2 ) is transferred from a flat to a curved position for placement on a curved support structure. Aircraft cabin ( 4 ) according to claim 11, characterized in that the aircraft cabin ( 4 ) comprises the support structure, wherein the illumination device ( 1 ) is arranged in the curved position cohesively on the support structure.

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