DE102013015450B4 - Lighting system for lighting an aircraft interior, aircraft interior with the lighting system as well as a method for setting a command color location of the lighting system - Google Patents

Abstract

Lighting system (1) for illuminating an interior space with a user light (N), the user light (N) having a command color code (C), with at least one first lighting device (3.1 ... 3.n), the first lighting device (3.1) a plurality of LEDs (R, G, B, W) with different colors and a color control device (6) for controlling the plurality of LEDs (R, G, B, W) on the basis of a first control data set (7.1), so that the first lighting device (3.1) emits a first mixed light (M1) with a first base color locus, with a first reflective surface (5.1), the first mixed light (M1) impinging on the first reflective surface (5.1), whereby the first reflective surface (5.1) provides the first mixed light (M1) is changed into a first reflection light (R1) with a first reflection color point, characterized in that the first reflection surface (5.1) forms part of an aircraft interior (2) and the first control data set (7.1 ) is matched to the first reflection surface (5.1), so that the first reflection color location corresponds to the command color location (C) and the first reflection light (R1) forms at least part of the user light (N), characterized in that the first control data set (7.1 .. 7. .7.n) is formed, the change data record having a color vector in a color space for each color of the plurality of LEDs (R, G, B, W).

Description

The invention relates to a lighting system for illuminating an interior with a user light with the features of claim 1. The invention also relates to an aircraft interior with the lighting system and a method for setting a command color location of the user light.

LED lighting is characterized by a low energy requirement and low heat generation. For this reason, LED lighting is very interesting for use in cars. Due to the fact that LEDs are not thermal emitters but semiconductor elements, the design of the color of LED lighting is an important area of work. Usually, in addition to white LEDs, red, blue and green LEDs are also used to generate a natural light based on thermal rays. Such a structure also has the advantage that a large number of different colors can be generated by the LED lighting.

For example, the reference discloses CN 20 28 57 052 U an LED control device for LEDs with three basic colors for a vehicle, the control device allowing different color tones to be generated. Further lighting systems are from the DE 10 2011 075 116 A1 , of the DE 10 2011 015 161 A1 as well as the DE 10 2011 103 639 A1 known.

The invention is based on the object of creating a lighting system, the lighting system being easy to configure and allowing balanced and / or uniform illumination of an interior space. This object is achieved by a lighting system with the features of claim 1 and by an aircraft interior with the features of claim 9 and a method with the features of claim 10. Preferred or advantageous embodiments of the invention emerge from the subclaims, the following description and the attached figures.

According to the invention, a lighting system is proposed which is designed to illuminate an interior space with a user light. The user light is in particular the light from the lighting system which is or can be used by a user as lighting, for example for reading. The user light has a color location which is referred to as the command color location.

A color locus is understood to mean the definition of a color of a light, in particular an illumination, which is defined by a point in a color space whose position is described with suitable coordinates. In particular, the point in the color space represents the color. The command color location is understood to be the color location that the user light should have as intended or as defined. It is therefore a target color location. The color space can be represented, for example, in an L, u ', v' coordinate system or in an XYZ coordinate system. In particular, the CIE color dimensions 1931 (XYZ and xyY), the CIE color dimensions 1976 (L * a * b * and L * u * v *, color wheel, color distances ΔE, LCh), other CIE and DIN color distance formulas ( for example Lab99, ΔE94, ΔE2000, ΔE99, ΔEcmc) can be used.

The lighting system comprises at least one first lighting device, preferably several such lighting devices. The first lighting device has a plurality of LEDs with different colors. The plurality of LEDs particularly preferably has the colors red, green and blue. In addition, the majority of LEDs optionally also have white LEDs.

The lighting device also has a color control device which is designed to control the plurality of LEDs. For this purpose, the color control device comprises a control data set which defines the proportions of the LEDs with different colors for lighting, so that the first lighting device emits a first mixed light with a first basic color location on the basis of the first control data set. The first mixed light is understood to mean a light which has portions of the LEDs with different colors. The first basic color location is the color location of the first mixed light in the color space.

The lighting system comprises a first reflective surface, the reflective surface according to the invention forming part of an aircraft interior as the interior. The lighting device is particularly preferably used in the aircraft interior, the reflection surface already being present in the aircraft interior.

In particular, the lighting system and the reflective surface are two components that are mounted parallel to one another.

The first mixed light strikes the first reflection surface, the first mixed light being changed into a first reflection light with a first reflection color location by the first reflection surface. The reflection light is preferably understood to mean the entirety of the light thrown back from the reflection surface, so that the reflection light includes both parts of a directed reflection, an undirected reflection and, in particular, a part includes diffuse scattering. The color locus or the hue of the first mixed light is modified by the reflective properties of the reflective surface, so that the first reflected light, that is to say the light reflected back from the first reflective surface, has a first reflective color locus that is not the same as the base color locus. If the first mixed light is emitted, for example, onto a red surface, the color location of the first reflection light will be shifted in relation to the color location of the first mixed light in the direction of the color red.

In the context of the invention, it is also proposed that the first control data set be matched to the first reflection surface. The coordination takes place in such a way that the first reflection color location corresponds to the command color location and the first reflection light forms at least part of the user light. In other words, the first reflection surface is taken into account when defining the first control data set. Returning to the detailed example, this means that - if the first reflective surface has a red color - the first control data set is designed such that the user light is nevertheless designed as white light and not as red-tinged light. In this way, balanced or uniform illumination of the aircraft interior is achieved.

It is a consideration of the invention that the user light should be designed for a pleasant atmosphere for the user independently of the aircraft interior, in particular of the reflective surfaces of the aircraft interior. However, it is usually the case that lighting devices are matched to a reference reflective surface, in particular to a white reference reflective surface - also called a white standard - so that the user light no longer has the command color locus in differently colored reflective surfaces. This disadvantage is eliminated in that the control data set is selectively matched to the first reflective surface, in particular to the reflective properties of the first reflective surface.

In the inventive data implementation, the first and optionally every nth control data record is formed from a basic control data record and a change data record and / or the control data record comprises the basic control data record and the change data record. The basic control data record can, for example, have been generated during the manufacture of the lighting device, the lighting device being matched to the command color location in relation to one or the reference reflection surface. In particular, the same reference reflection surface was used for all basic control data sets. In particular, the reference reflection surface is designed as a white standard. Thus, the reference reflection color location when using the reference reflection surface has corresponded to the command color location in all lighting devices.

The change data record is designed in such a way that it changes the basic control data record in such a way that the first or n-th control data record is formed. The change data record includes, in particular, a color vector in a color space for each color of the plurality of LEDs. As a model, the LEDs are assigned other individual color locations so that the overall color location is also changed. By using the color vectors to define the change data record, it can be kept very small in terms of data technology, so that no large storage requirements arise.

Overall, the lighting system can be designed so that each of the lighting devices has a basic control data record that relates to the same reflection reference surface and a change data record that takes into account the change in color location due to the respective reflection surface. In particular, it can be provided that lighting devices with reflective surfaces of the same type have the same change data record.

In many lighting systems, however, not just one lighting device but a large number of lighting devices is provided, the large number of lighting devices being directed onto reflective surfaces which have mutually different reflection properties. In particular, these lighting systems form a common user light. In this constellation, the advantages of the invention come into play particularly well, since each of the lighting devices is individually matched to the assigned or its own reflection surface via the control data set, so that each of the lighting devices generates a reflection light despite different reflection surfaces, in particular with different reflection properties, whereby the reflection color locus corresponds to the command color location and the reflected light thus forms part of the user light. Consequently, in the case of an aircraft interior with a plurality of lighting devices and a plurality of different reflection surfaces, a homogeneous or uniform user light is nevertheless generated for the user.

In general, this means that, in a preferred embodiment, the lighting system has an n-th, at least second, lighting device. In particular, n is designed to be at least equal to two, preferably greater than two and in particular greater than five. As explained, the lighting system can thus have a third, fourth, or further lighting device. The nth The lighting device comprises a plurality of LEDs with different colors and an n-th color control device for controlling the plurality of LEDs on the basis of an n-th control data set. The color control device can be understood as a physical assignment, so that each lighting device is physically assigned its own color control device or understood as a logical assignment, a main control device providing a color control device for each of the lighting devices. The n-th color control device controls the plurality of LEDs of the n-th lighting device in such a way that the n-th lighting device emits an n-th mixed light with an n-th base color point. The nth mixed light strikes an nth reflective surface, the nth reflective surfaces forming at least two groups with different reflective properties. The n-th mixed light is changed into an n-th reflection light with an n-th reflection color location by the n-th reflection surface. The nth control data set is matched to the nth reflection surface in such a way that the nth reflection color location corresponds to the command color location and the nth reflection light forms at least part of the user light.

In this refinement, it is possible to use a plurality of lighting devices to illuminate an aircraft interior with the user light in a balanced, uniform or homogeneous manner with regard to the color location.

In a preferred structural embodiment of the invention, the lighting devices are designed as aircraft interior lighting. Alternatively or in addition, the first and the nth reflection surfaces, that is to say in particular each of the reflection surfaces, are each designed as a wall area in the aircraft interior. The wall area is preferably formed by a cladding in the aircraft interior. The aircraft interior is particularly preferably illuminated indirectly. It is preferably provided that the lighting devices are designed as light strips which extend in the aircraft interior along the longitudinal direction. With regard to their direction of emission, the light strips are oriented in such a way that they are directed onto the reflection surfaces; in particular, indirect lighting is generated by the lighting devices.

It can be provided that the wall areas or the reflective surfaces differ in terms of their texture, in terms of their color and / or in terms of their material. All three factors lead to differences in the reflection properties, which can lead to a change in the color locus in the event of a reflection and can be taken into account by appropriately selectively coordinated control data sets so that the resulting reflected light has the command color locus as the reflection color locus.

In a preferred embodiment of the invention, the at least first lighting device has an interface for accepting the at least first control data record or change information, in particular a change data record, for the at least first control data record. In particular, the interface is accessible when the lighting system is installed. The interface can be a mechanical interface, the control data record and / or the change information being entered, for example, via DIP switches. However, the interface is particularly preferably designed as a data interface, in particular as a network interface. In this refinement, it is possible for the at least first control data record, some control data records or all control data records or corresponding change information to be transmitted to the lighting device or devices via a network.

To generate or modify the control data set, the lighting system can have a color location detection device which is designed to detect a color location, in particular a reflection color location. In particular, the color location detection device comprises a spectrometer. Furthermore, the color location detection device is designed to generate the at least first control data set or the change information for the at least first control data set. The color location detection device thus allows the color location of the reflected light to be detected and, on the basis of the detected reflection color location, the first control data set or change information relating to this to be generated. During operation, the lighting device with the assigned reflective surface is measured with the color locus detection device with regard to the color locus in order to adapt the at least first control data set to the reflective surface.

Another subject matter relates to an aircraft interior with the lighting system as described above.

Another object of the invention relates to a method for setting a command color location of the lighting system, as described above or according to one of the preceding claims. The method is characterized in that the first control data set is coordinated, in particular selectively, with the first reflection surface. In particular, the method includes the intended use of the Lighting system as described above. The lighting system is preferably designed to carry out the method.

The method can provide that the at least first lighting device and the first reflective surface are installed in the aircraft interior, the reflection color location is subsequently determined and then the first control data set and / or a change data set for generating the first control data set are created and transmitted to the first color control device .

Insofar as the change data record is offset against a first basic control data record of the first lighting device in order to generate the first control data record, it is preferred that a copy of the change record is transmitted to n-th lighting devices, which are preferably structurally identical, a reflection surface with the same reflection properties (or Color locus change properties) as well as a basic control data record that was generated with reference to the same reference reflection surface. As a result of this development, only one color point measurement has to be carried out for all lighting devices with reflective surfaces of the same type. A second color location measurement must be carried out for different types of reflective surfaces.

Alternatively, it is also possible for the manufacturer of the components bearing the reflection surface to provide the change data record which relates to a previously defined basic control data record or a basic control data record which relates to a previously defined reference reflection surface. In this way, the lighting system in the aircraft interior only needs to be configured in terms of data.

The control data set or sets is preferably stored as static configuration data or even as service life data in the lighting system, in particular in the lighting devices. In particular, the control data sets remain unchanged in the company for at least two months.

• 1 eine schematische Seitenansicht einer Beleuchtungsanlage als ein Ausführungsbeispiel der Erfindung;
• 2 die Beleuchtungsanlage in der 1 in einem Blockdiagramm;
• 3 experimentelle Ergebnisse der Vermessung von Spektren der Beleuchtungsanlage mit unterschiedlichen Reflexionsflächen;
• 4 eine Vektordarstellung zur Erläuterung der Verschiebung von Farborten;
• 5 eine weitere Beleuchtungsanlage als ein zweites Ausführungsbeispiel der Erfindung.

Further features, advantages and effects of the invention emerge from the following description of preferred exemplary embodiments of the invention as well as the attached figures. Show:

• 1 a schematic side view of a lighting system as an embodiment of the invention;
• 2 the lighting system in the 1 in a block diagram;
• 3 experimental results of the measurement of spectra of the lighting system with different reflection surfaces;
• 4th a vector illustration to explain the shift of color locations;
• 5 another lighting system as a second embodiment of the invention.

The 1 shows a lighting system in a schematic side view 1 for the aircraft interior 2 of an airplane. The lighting system 1 comprises at least one first lighting device 3.1 . The first lighting device 3.1 is designed as a light strip, which extends in the longitudinal direction of the aircraft interior 2 of the aircraft extends. The first lighting device 3.1 is z. B. in a channel 4th in the aircraft interior 2 arranged such that the aircraft interior 2 is illuminated indirectly. Starting from the first lighting device 3.1 becomes a first mixed light M1 against a wall section, which is the first reflection surface 5.1 acts, radiated and subsequently as the first reflection light R1 in the aircraft interior 2 directed. The first reflection surface 5.1 load-bearing wall section is, for example, as an interior lining of the aircraft interior 2 educated.

In the 2 is the lighting system 1 with the first lighting device 3.1 together with the first reflective surface 5.1 shown in a block diagram.

From this block diagram it can be seen that the lighting device 3.1 has a plurality of LEDs R, G, B, W, which are designed as red LEDs R, green LEDs G, blue LEDs B and white LEDs W according to their abbreviations. The entirety of the LEDs R, G, B, W generates the first mixed light M1 , which is on the reflective surface 5.1 meets. The mixed light M1 points in relation to the possible color space of the lighting device 3.1 a first base color point. A color location is understood to mean a point or a position in the color space. In particular, the color location or the first basic color location can be defined by coordinates in the color space.

Meets the mixed light M1 with the first base color point on the reflection surface 5.1 on, this is reflected or scattered, so that a reflection light R1 with a first reflection color point. Depending on the reflective properties of the reflective surface 5.1 the first reflection color point is shifted compared to the first base color point.

• Die 3 zeigt drei spektrale Verläufe L1, L2 und L3, wobei der erste spektrale Verlauf L1 das Spektrum des Reflexionslichts einer baugleichen Beleuchtungsvorrichtung 3.1 zeigt, wenn als Reflexionsfläche eine Referenzreflexionsfläche - auch Weißnormal genannt - eingesetzt wird. Die zweite Linie zeigt L2 dagegen das Spektrum, wenn als Reflexionsfläche eine reale Oberfläche, wie z.B. die Reflexionsfläche 5.1 eingesetzt wird. Die erste Linie L1 repräsentiert somit die übliche Einstellung einer derartigen Beleuchtungsvorrichtung, da in Unkenntnis der späteren Verwendung derartige Beleuchtungsvorrichtungen üblicherweise auf das Weißnormal abgestimmt werden. Wird als Reflexionsfläche statt dem Weißnormal eine reale Oberfläche verwendet, so wird das daraus resultierende Reflexionslicht spektral verschoben, wie dies gemäß der Linie L2 gezeigt ist.

From these physical relationships, a problem arises that is related to the 3 is explained:

• The 3 shows three spectral curves L1 , L2 and L3 , where the first spectral curve L1 the spectrum of the reflected light of an identical lighting device 3.1 shows when a reference reflection surface - also called a white standard - is used as the reflection surface. In contrast, the second line shows L2 the spectrum if a real surface, such as the reflection surface, is used as the reflection surface 5.1 is used. The first line L1 thus represents the usual setting of such a lighting device, since in ignorance of the later use such lighting devices are usually matched to the white standard. If a real surface is used as the reflection surface instead of the white standard, the resulting reflection light is shifted spectrally, as shown in the line L2 is shown.

Thus, when setting a target color location as the command color location for the combination of lighting device 3.1 and reflective surface 5.1 generated reflection light R1 as user light N lead to a reflection light with a reflection color location that does not correspond to the command color location, since the spectral transfer function of the reflection surface 5.1 is not taken into account. For this reason, the color point is corrected so that the reflection color point of the reflected light R1 the command color location of the user light N corresponds.

To implement this idea, the first lighting device comprises 3.1 a first color control device 6.1 , which on the basis of a first control data set 7.1 is designed to control the plurality of LEDs R, G, B, W in such a way that, taking into account the first reflection surface 5.1 the first reflection color point of the reflection light R1 corresponds to the command color location and the first reflected light R1 at least part of the user light N forms.

By means of a control data set adapted in this way 7.1 the spectrum can be corrected like that by the line L3 in the 3 is shown. Here is the spectrum of the line L3 the spectrum L1 of the white standard has been adapted in such a way that it subjectively has the same color for a user.

The 4th shows the color locations of the LEDs R, G, B, W in a u'-v 'color space, with the reference symbols R, G, B, W denoting the color locations of the LEDs R, G, B, W when the reference reflecting surface is irradiated, in particular of the white standard. By contrast, the reference symbols R ', G', B ', W' represent the color locations of the LEDs R, G, B, W if the real reflection surface is used instead of the reference reflection surface 5.1 is used. In this case, the color locations R ', G', B ', W' are shifted with respect to the original color locations R, G, B, W. This leads to a common command color location C of the lighting device 3.1 is shifted to a color location C '.

The first control record 7.1 is defined in such a way that the LEDs R, G, B, W are controlled so that, instead of the shifted color location C ', the command color location C is caused by the reflection light R1 is generated so that this is part of the user light N forms.

During the implementation, it can be provided that the first control data record 7.1 comprises a basic control data record which the lighting device 3.1 controls in such a way that it would generate the command color location C if the reference reflection surface were used as the reflection surface. In addition, the first control data record comprises a change data record which describes either the individual shifts R-R ', G-G', B-B ', WW' or the total shift CC '. Knowing the basic control data set and the change data set, the color control device can 6.1 control the LEDs R, G, B, W so that as reflection light R1 part of the user light N is generated with the command color code C.

The 5 shows a lighting system 1 with a plurality of lighting devices 3.1 , 3.2 ... 3.n and a plurality of reflective surfaces 5.1 , 5.2 ... 5.n . The reflection surfaces 5.1 ... 5.n can be designed differently, in particular they can have different reflection properties. Because of this, every lighting device 3.1 ... 3.n a separate control data set 7.1 ... 7.n assigned to the influence of the respective reflection surface 5.1 ... 5.n so taken into account that the resulting reflection light R1 ... Rn has the command color location C as the reflection color location and thus part of the user light N forms. This makes it possible to use the entire aircraft interior 2 with a user light that is homogeneous in terms of the color location N to illuminate.

The configuration of the lighting system 1 takes place, for example, by the control records 7.1 ... 7.n or only the change data records for the reflection surfaces 5.1 ... 5.n can be determined and via an interface 8th to the respective lighting device 3.1 ... 3.n are passed.

The determination of the control data sets 7.1 ... 7.n can, for example, after installing the lighting system 1 as well as the reflective surfaces 5.1 ... 5.n in the aircraft interior 2 be carried out with a color location detection device and the corresponding data are generated. It should be emphasized that the configuration of the command data sets 7.1 ... 7.n or change data records either offline or only once and / or when the lighting system is first installed 1 must be carried out. As an alternative to this procedure, the manufacturer of the wall areas that contain the reflective surface 5.1 ... 5.n carry, provide corresponding change data records.

List of reference symbols

1

Lighting system

2

Aircraft interior

3.1 / 3.n

first / nth lighting device

4th

channel

5.1 / 5.n

first / nth reflective surface

6th

Color control device

7.1 / 7.n

first / n-th control data record

8th

interface

R1 / Rn

first / nth reflection light

L1, L2, L3

spectrum

M1 / Mn

first / nth mixed light

N

User light

Claims (12)

Lighting system (1) for illuminating an interior space with a user light (N), the user light (N) having a command color code (C), with at least one first lighting device (3.1 ... 3.n), the first lighting device (3.1) a plurality of LEDs (R, G, B, W) with different colors and a color control device (6) for controlling the plurality of LEDs (R, G, B, W) on the basis of a first control data set (7.1), so that the first lighting device (3.1) emits a first mixed light (M1) with a first base color locus, with a first reflective surface (5.1), the first mixed light (M1) impinging on the first reflective surface (5.1), whereby the first reflective surface (5.1) provides the The first mixed light (M1) is changed to a first reflection light (R1) with a first reflection color point, characterized in that the first reflection surface (5.1) forms part of an aircraft interior (2) and the first control data set (7.1) is matched to the first reflection surface (5.1) so that the first reflection color location corresponds to the command color location (C) and the first reflection light (R1) forms at least part of the user light (N), characterized in that the first control data set (7.1 ... 7.n) is formed from a basic control data set and a change data set, the basic control data set being coordinated with a reference reflection surface so that a reference reflection color location corresponds to the command color location (C) and the change data set changes the basic control data set in such a way that the first control data set (7.1 ... 7.n), the change data record having a color vector in a color space for each color of the plurality of LEDs (R, G, B, W). Lighting system (1) Claim 1 . characterized in that the lighting system (1) has an n-th, at least second, lighting device (3.n), the n-th lighting device (3.n) having a plurality of LEDs (R, G, B, W) different colors and an n-th color control device (6) for controlling the plurality of LEDs (R, G, B, W) on the basis of an n-th control data set (7.n), so that the n-th lighting device (3. n) n-th mixed light (Mn) emits with an n-th base color point, the n-th mixed light (Mn) impinging on an n-th reflection surface (5.n), with the n-th reflection surface (5.n) has other reflective properties than the first reflective surface (5.1), the nth mixed light (Mn) being changed into an nth reflected light (Rn) with an nth reflective color locus through the nth reflective surface (5.n), wherein the nth control data set (7.n) is matched to the nth reflection surface (5.n), so that the nth reflection color location corresponds to the command color location (C) t and the n-th reflection light (Rn) forms at least part of the user light (N). Lighting system (1) Claim 2 , characterized in that the lighting devices (3.1 ... 3.n) are designed as aircraft interior lighting and / or the first and the n-th reflection surface are each designed as a wall area in the aircraft interior of an aircraft. Lighting system (1) Claim 3 , characterized in that the lighting devices (3.1 ... 3.n) are designed as light strips which extend in the aircraft interior (2) along the longitudinal direction. Lighting system (1) Claim 3 or 4th , characterized in that the reflective surfaces (5.1 ... 5.n) of the wall areas differ in texture, color and / or material. Lighting system (1) according to one of the preceding claims, characterized in that the at least first lighting device (3.1 ... 3.n) has an interface (8) for accepting the at least first control data set (7.1 ... 7.n) or change information for at least the first control data record (7.1 ... 7.n). Lighting system (1) Claim 6 , characterized in that the interface (8) is accessible in the installed state of the lighting system (1). Lighting system (1) according to one of the preceding claims, characterized by a color location detection device for detecting a reflection color location and for generating the at least first control data set (7.1 ... 7.n) or the change information for the at least first control data set (7.1 ... 7.n) ). Aircraft interior (2), characterized by a lighting system (1) according to one of the preceding claims. Method for setting a command color location of the lighting system (1) according to one of the preceding claims, characterized in that the first and optionally additionally the n-th control data record (7.1 ... 7.n) is applied to the first or n-th reflection surface (5.1 ... 5.n) is voted on. Procedure according to Claim 10 , characterized in that the lighting device (3.1 ... 3.n) and the associated reflective surface (5.1 ... 5.n) are installed in the aircraft interior (2), followed by the color locus of the reflected light from the lighting device (3.1 ... 3.n) is determined, in particular measured, on the assigned reflective surface (5.1 ... 5.n) and then the control data set (7.1 ... 7.n) is applied to the reflective surface (5.1 ... 5 .n) is voted on. Procedure according to Claim 10 or 11 , characterized in that the control data set (7.1 ... 7.n) is or will be set statically or permanently.

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