CN110549936A

CN110549936A - Method for generating interior lighting in a local region of a vehicle roof and shading device

Info

Publication number: CN110549936A
Application number: CN201910480211.2A
Authority: CN
Inventors: C.科尔曼
Original assignee: Volkswagen AG
Current assignee: Volkswagen AG
Priority date: 2018-06-04
Filing date: 2019-06-04
Publication date: 2019-12-10
Also published as: DE102018208740A1

Abstract

the invention relates to a method for producing interior lighting in the region of a roof section (11) of a motor vehicle (K). In this case, a flat shielding element (13) is placed in a shielding position covering the roof part (11) or in an exposed position exposing the roof part (11). The shading element (13) is illuminated in its shading position by a light beam of the at least one light source. A light scene (LEB1) that can be seen from the interior of the motor vehicle (K) is thereby produced on the shading element (13). The invention proposes that the light beam of at least one light source is directed from the direction of the roof part (11) in the direction of the shielding element (13) and that a light scene (LEB2) which can be seen from the interior space is thereby generated by the light beam also in the exposed position of the shielding element (13) in the interior of the roof part (11).

Description

Method for generating interior lighting in a local region of a vehicle roof and shading device

Technical Field

The invention relates to a method for producing interior lighting in the region of a roof part of a motor vehicle, wherein a flat shielding element is placed in a shielding position covering the roof part or in an exposed position exposing the roof part, and the shielding element is illuminated in its shielding position by a light beam of at least one light source, and thereby a light scene visible from the interior of the motor vehicle is produced at the shielding element. The invention also relates to a screening device for carrying out the method in the region of a roof part of a motor vehicle, having at least one flat screening element which can be brought into a screening position in which it covers the roof part and into an exposed position in which the roof part is exposed, wherein at least one light source is present, the light beam of which the screening element can be illuminated from above in its screening position and thus a light view which can be seen from the interior of the motor vehicle can be produced at the screening element.

Background

Such a method and such a screening arrangement are known from DE 102015101826 a 1. In particular in this patent document, the screening arrangement has a screening element in the form of a roller blind. The roller blind comprises a first layer designed as an on-off film and a second layer designed as a fabric, which faces the interior space. The textile can be designed as a reflective textile and can be illuminated from its underside by illumination means in the form of LED strips (light-emitting diodes). In the screening position of the roller blind, the lighting function of the roller blind can be controlled by direct touching with the hand of the vehicle occupant. For this purpose, the roller blind has a switching film facing away from the interior space, which switching film has a plurality of regions. The illumination may be switched on/off, dimmed or changed in color when the area is touched. When opened, the light impinges on the fabric of the roller blind and is reflected in the direction of the interior space.

The manner and originality of the interior lighting is nowadays a decisive factor for the customer in the decision to purchase and gives the motor vehicle brand a distinctive mark.

Disclosure of Invention

The object of the present invention is therefore to provide a method for producing interior lighting in a region of a roof region of a motor vehicle, by means of which the originality of the interior lighting can be improved. The technical problem to be solved by the present invention is also to provide a shading device suitable for performing the method.

The object is achieved in terms of method by a method for producing interior lighting in the region of a roof part of a motor vehicle, and in terms of a screening device by a screening device in the region of a roof part of a motor vehicle for carrying out the method.

In terms of method, the invention is based on a method for generating an interior illumination in a region of a roof region of a motor vehicle. In the method, a flat shielding element is placed in a shielding position covering a part of the vehicle roof or in an exposed position exposing a part of the vehicle roof. The shading element is illuminated in its shading position by the light beam of the at least one light source. This produces a light image (licherscheinnungsbild) that can be seen from the interior of the motor vehicle at or in the shading element. The at least one light source can preferably be designed as an LED (light emitting diode) or also as a light strip with a plurality of LEDs.

According to the invention, the light beam of the at least one light source is directed from the direction of the roof section (i.e. exits the roof section) in the direction of the shielding element and thus a light view visible from the interior space is also generated by the light beam in the interior of the roof section in the exposed position of the shielding element.

In this way, a dual use of the at least one light source and an inventive interior illumination for the vehicle occupants can be achieved. The inventive generation of the illumination of the interior space is possible even in the two possible extreme positions of the shielding element (fully shielded position and fully exposed position). In addition, it is also possible to realize different light effects or light views in different positions of the shading element, at the shading element and in the roof part, respectively.

According to an embodiment, the light scene generated on the shading element has a three-dimensional light effect.

By suitable selection and arrangement of one or more light sources, it is possible, for example, to produce such a three-dimensional light effect in which the thin light rays or the thicker light strips are curved in an upward direction, i.e. projected upward from the motor vehicle. It is also conceivable to produce a light effect in which the light or light strip is curved in such a way that it appears to be emitted downward into the interior of the motor vehicle. The light or light strip can be oriented in the longitudinal direction of the motor vehicle, for example. Here, the possibilities are various and not listed one by one. For example, three-dimensional light effects can also be considered, in which light or light bands are randomly and non-directionally present at or in the shading elements.

According to a further embodiment of the inventive idea, the light scene generated in the interior of the roof section in the exposed position of the shielding element has a starry sky appearance.

In this way, a particularly inventive "fantasy" effect can be produced in the exposed position of the screening element. This may for example be completely different from "sporty" three-dimensional light effects that can be produced within the shading element in its shading position.

As already mentioned, the invention is also intended to provide a screening device which enables the method according to the invention to be carried out in a satisfactory manner.

In this case, a screening device is first of all provided in a partial region of a roof of the motor vehicle. The screening device comprises at least one flat screening element which can be brought into a screening position in which it covers a part of the vehicle roof and into an exposed position in which it exposes the part of the vehicle roof. An intermediate position of the screening element is of course conceivable in which the roof part is only partially covered or exposed. At least one light source is present, the light beam of which illuminates the shading element from above in its shading position and thus produces a light scene at the shading element that can be seen from the interior of the motor vehicle.

The invention provides that, in the exposed position of the screening element, the light beam from the at least one light source can also generate a light scene in the at least one transparent element which fills the roof part.

The screening arrangement is designed such that the light source can be used dually. The light source serves, on the one hand, for illuminating the shielding element and, on the other hand, can also generate an interior illumination in the switched-on state by means of the light source when the shielding element is in its exposed position.

According to an embodiment, the at least one light source is arranged in the region of at least one end face of the transparent element. The at least one light source is arranged in such a way that a light beam of the light source can be emitted laterally into the transparent element and through a plurality of exit points of the transparent element again in the direction of the interior.

The advantage of the extended design is that a plurality of different light scenes can be generated with only a few light sources. For example, a plurality of such exit points can be present, so that in this way, for example, a light scene in the form of a star field with a plurality of punctiform light displays (licherscheinung) can be produced. However, it is also conceivable to design the exit area as a planar area, which in turn results in a planar luminous portion and thus in a completely different light scene.

If the transparent element consists of two combined plate-shaped components, the exit points being arranged at the boundary layer of the plate-shaped components, the exit points can be applied to the surface of the plate-shaped components by means of a suitable etching technique or printing technique.

alternatively, it is conceivable that the transparent element is formed by a plate-shaped component in which the exit region is formed. In this embodiment, the exit points can be cut into the component by special laser methods in the middle without damaging the surface of the component. Preferably, a so-called ultrashort pulse laser method can be used here.

Finally, as a further variant, it is also conceivable for the transparent element to be composed of two combined plate-shaped components, in the boundary layer of which a plurality of light sources are embedded. The light source may for example be laminated. The light source can preferably be designed as an LED (light emitting diode) which produces a punctiform light display. Even any color effect can be produced if the LEDs are designed as so-called red, green and blue light emitting diodes (RGB-LEDs). Special effects can also occur if the light source is designed flat. For example, an Organic Light Emitting Diode (OLED) may be used.

In order to create a special spatial impression for the vehicle occupants in the screening position of the screening element, a further embodiment of the inventive concept proposes that the screening element is provided with a light-effect substance. This enables a three-dimensional light effect to be produced when illuminated by the at least one light source.

Drawings

Preferred embodiments of the invention are shown in the drawings and are explained in detail in the following description in view of the drawings. Thereby also making other advantages of the invention clear. The same reference numbers may be used in different drawings to identify the same, similar or functionally identical elements. Corresponding or similar properties and advantages are achieved even if not repeatedly described or cited herein. The drawings are not to scale or at least not always. In some of the drawings, the scale or distance may be exaggerated in order to more clearly highlight the features of the embodiments. In the drawings, which are each schematically:

fig. 1 shows a perspective view of a motor vehicle with a screening arrangement according to the invention;

Fig. 2 shows a view of the roof of the motor vehicle from the perspective II in fig. 1;

Fig. 3 shows a sectional view according to the sectional profile III in fig. 2;

Fig. 4 shows an enlarged view of detail IV from fig. 3;

Fig. 5 shows a view similar to fig. 4 of a further embodiment;

FIG. 6 shows a view similar to FIG. 4 of a further different embodiment;

Fig. 7 shows a view similar to fig. 2 of a further embodiment;

FIG. 8 shows a view similar to FIG. 5 of other embodiments;

FIG. 9 shows a view similar to FIG. 6 of yet another embodiment and

Fig. 10 shows a view of a three-dimensional light effect that can be produced.

Detailed Description

Reference is first made to fig. 1. Fig. 1 shows a motor vehicle K, which has a roof 10 with a roof part 11.

The roof part 11 occupies the majority of the area of the roof 10 with its rectangular contour and is filled by at least one transparent element 12. The transparent element 12 is designed in the form of a combined sliding/lifting roof and preferably consists of two transparent elements (not further shown), one of which can be lifted and slid in the longitudinal direction of the motor vehicle K. The roof part 11 can thereby be opened at least partially.

Furthermore, a roller blind-like shading element 13 is shown, which in the illustrated position partially covers the roof part 11 or the transparent element 12 or exposes the roof part 11 or the transparent element 12 from the interior of the motor vehicle K. For this purpose, the screening element 13 can be moved electrically in the longitudinal direction of the motor vehicle (see double arrow). The front window of the motor vehicle K is denoted by 16.

Fig. 2 shows a view of the roof 15 of the motor vehicle K from the interior I (see also fig. 3) of the motor vehicle K. In this view, the receptacle 14 can also be seen, in which the roller blind-like screening element 13 can be received after it has been wound.

the roof console 17 in the roof is primarily used for operating the shading elements 13 and for adjusting the transparent element 12, which transparent element 12 can also be referred to as a sliding roof or a panoramic roof.

The shading element 13 can be electrically moved into such a shading position by the roof console 17, in which the shading element 13 completely covers the transparent element 12. Adjustment of the exposed position in which the shielding element 13 completely exposes the transparent element 12 can also be achieved. The roller blind-like screening element 13 is wound or unwound in its movement about a winding shaft 14 a. Any intermediate position between the exposed position and the shielding position of the shielding element 13 can be adjusted. In the figures, the shading element 13 is therefore in an intermediate position in which approximately half of the transparent element 12 or the roof part 11 is exposed.

furthermore, four end sides S of the transparent element 12 are marked, which are substantially rectangular in outline.

It can be seen that a lighting strip 18 is arranged in each case on the end sides S extending in the longitudinal direction of the motor vehicle K.

When the shading element 13 is moved to its exposed position and the lighting strip 18 is energized, the light scene LEB2 is visible in the transparent element 12. In the present embodiment, light scene LEB2 has a plurality of point-like light-emitting portions LE. The light-emitting portions LE are arranged in particular irregularly on the surface of the transparent element 12. Thereby forming a "starry sky effect".

how to technically produce the light-emitting portion LE is more clearly illustrated with reference to fig. 3. It can be seen here that a plurality of light sources 18a arranged next to one another are arranged in the illumination strip 18. The light source 18a is preferably designed as a light-emitting diode (LED), particularly preferably as a so-called red, green and blue LED. They can produce light of any color.

Furthermore, a plurality of exit points 19 are shown in the transparent element 12, of which only a few are shown as a representative. The exit points 19 are arranged similarly to the already mentioned light display sections LE. When the light source 18a is energized, the light beam L of the light source enters the end side S of the element 12, is guided at least in sections through the element and exits again at the exit point 19 from the element 12 in the direction of the interior I of the motor vehicle K. This forms a punctiform luminous portion LE which forms a light scene LEB2 if the element 12 is not covered by the shielding element 13.

If the element 12 is covered by a shielding element 13 (as in fig. 3), the light beam L' emitted in the direction of the interior space I impinges on the shielding element 13 and illuminates said shielding element 13.

The shading elements 13 may have a light-effect substance or be designed as such. The light-effect substance can be, in particular, a textile fabric (textile fabric) by means of which a three-dimensional representation of the light effect can be produced. Such textile fabrics are currently available on the market. It is particularly preferred to use such a textile fabric with a double-layer fabric structure which consists of a warp layer and a weft layer lying one-sidedly on the warp. The warp and weft yarns weave substantially straight and each form a separate plane. Furthermore, in the preferred fabrics used, the yarn density of the weft layer is many times greater than the yarn density of the warp layer. The yarns can be made of polymer materials, mineral fibers or also inorganic materials, such as metals.

By using such light effect substances, special three-dimensional effects can be produced when the shading element 13 is illuminated by the emerging light beam L', which can be varied almost arbitrarily by the arrangement and design of the emergence points 19 and by the arrangement and positioning of the light sources 18 a. In fig. 2, it is shown that a three-dimensional light effect A, B, C (see also fig. 10) is generated on the shading elements 13 by said illumination of said shading elements.

In fig. 4, it is shown that the transparent element 12 can be composed, for example, of two superimposed and interconnected plate-like members 12a and 12 b. Thereby forming the boundary layer 12 c. In order to produce the injection points 19, the plate-shaped component 12a and/or the plate-shaped component 12b can be etched or embossed in a suitable manner at defined points. Thus, after combining the members 12a and 12b, the interference site 19 is inside the transparent element 12 and therefore not touched or otherwise tactilely neutral.

Alternatively, it is conceivable for the transparent element 12 to be designed in one piece from the outset. In this case, the emission points 19 can be cut into the material by special laser technology, preferably by the ultrashort pulse laser method. Here too, the surface of the element 12 remains unchanged. The process remains tactilely neutral.

Fig. 6 shows another alternative for producing a light scene LEB2 in the transparent element 12. In fig. 6, the transparent element 12 is again composed of two plate-like, combined transparent members 12a and 12 b. In this case, however, a plurality of light sources 20 are embedded, preferably laminated, in the interface layer 12 c. The light source 20 may be designed, for example, as a (RGB) light-emitting diode. In this embodiment, the illumination strip 18 can be omitted. However, a greater number of light sources 20 is required, for example, in order to produce a starry sky effect.

Fig. 7 shows an embodiment in which, in the transparent element 12, in the position shown of the shielding element 13, no punctiform light displays are produced, but rather flat light displays LE are produced. The outline of the planar light-emitting portion LE can be designed, for example, as a rectangle. But other geometries are also contemplated.

The planar luminous element LE can be realized by a correspondingly planar exit point 19 (see fig. 8) which can be opened into the element 12 in the manner already described.

It is also conceivable to realize the flat light-emitting portion LE by a flat light source 21 (see fig. 9). The light source 21 can be designed for this purpose, for example, as an OLED (organic light emitting diode).

Fig. 10 illustrates very schematically that a three-dimensional light effect can be produced by illumination of the shading element 13 by means of a light beam from the transparent element 12 or by means of a light beam L' emerging from the transparent element. The light effect a may for example give the impression of a ray or a light arc directed away upwards from the inner space I. The light effect B may give the impression of a light of a wave-shaped movement. The light effect C can give the impression of a light ray which is curved downward in the direction of the interior I. The enumeration is exemplary only and not all cases are enumerated. The formation of the three-dimensional light effect can be varied at will by the arrangement, shape and size of the exit points 19 or the light sources 20 and 21.

List of reference numerals

10 vehicle roof

11 roof part

12 transparent element

12a first plate-like member

12b second plate-like member

12c boundary layer

13 shading element

14 accommodation for a screening element

14a winding shaft

15 ceiling

16 front window glass

17 vehicle roof console

18 illumination strip

18a light source, LED

19 injection site

20 light source, light emitting diode

21 light source, organic light emitting diode

A. B, C three-dimensional light effect

I inner space

K Motor vehicle

L, L' light beam

LE light display part

LEB1, LEB2 light scene

Side of S end

Claims

1. A method for producing interior lighting in the region of a roof part (11) of a motor vehicle (K), wherein a planar shielding element (13) is placed in a shielding position covering the roof part (11) or in an exposed position exposing the roof part (11), and the shielding element (13) is illuminated in its shielding position by a light beam (L, L ') of at least one light source (18a, 20, 21), and a light scene (LEB1) visible from an interior (I) of the motor vehicle (K) is thereby produced at the shielding element (13), characterized in that the light beam (L, L ') of the at least one light source (18a) is directed from the direction of the roof part (11) into the direction of the shielding element (13) and in that the light beam (L, L ') also produces a light scene (I) visible from the interior (I) in the exposed position of the shielding element (13) inside the roof part (11) LEB 2).

2. a method as claimed in claim 1, characterized in that the light scene (LEB1) generated on the shading element (13) has a three-dimensional light effect (A, B, C).

3. Method according to claim 1 or 2, characterized in that the light scene (LEB2) generated inside the roof part (11) in the exposed position of the screening element (13) has the appearance of a starry sky.

4. A screening device for carrying out the method according to one of the preceding claims in the region of a roof section (11) of a motor vehicle (K), having at least one flat screening element (13) which can be brought into a screening position in which it covers the roof section (11) and into an exposed position in which the roof section (11) is exposed, wherein at least one light source (18a, 20, 21) is present, by means of the light beam (L, L') of which the screening element (13) can be illuminated from above in its screening position and a light (LEB1) which can be seen from the interior (I) of the motor vehicle (K) can thus be generated at the screening element (13), characterized in that in the exposed position of the screening element (13) the light beam (L) of the at least one light source (18a, 20, 21), L') can also generate a light scene (LEB2) in at least one transparent element (12) filling the roof part (11).

5. A screening arrangement according to claim 4, characterized in that the at least one light source (18a, 20, 21) is arranged in the region of at least one end side (S) of the transparent element (12) in such a way that a light beam (L, L') of the light source (18a, 20, 21) can be injected laterally into the transparent element (12) and can be injected again in the direction of the interior (I) through a plurality of injection points (19) of the transparent element (12).

6. A screening arrangement according to claim 5, characterized in that the transparent element (12) consists of two combined plate-like elements (12a, 12b), the boundary layer (12c) of which is provided with the ejection location (19).

7. a screening arrangement according to claim 5, characterized in that said transparent element (12) consists of a plate-like member in which the emission points (19) are provided.

8. A screening arrangement according to claim 4, characterized in that said transparent element (12) consists of two combined plate-like members (12a, 12b) in the boundary layer (12c) of which a plurality of light sources (20, 21) are embedded.

9. A screening arrangement according to any one of claims 4 to 8, characterized in that said screening element has light effect substances on which three-dimensional light effects (A, B, C) can be produced when illuminated by a light beam (L, L') from at least one light source (18a, 20, 21).

10. A screening arrangement according to one of claims 4 to 9, characterized in that the at least one light source (21) is designed as a surface.