ILLUMINATION DEVICE FOR AN INTERIOR SPACE OF A VEHICLE

Abstract

An illumination device for an interior space of a vehicle includes at least one light source and at least one light surface. The light surface is formed by at least one at least partially mirrored optical fiber, and the optical fiber can be adjusted to a shape of a windscreen.

Claims

1-9. (canceled)

10. An illumination device for an interior space of a vehicle, the illumination device comprising: at least one light source, wherein the light source is a melanopically effective light source, in order to implement a daylight supplement; and at least one light surface formed by at least one at least partially mirrored optical fiber, wherein the at least one at least partially mirrored optical fiber is adjustable to a shape of a windscreen.

11. The illumination device of claim 10, wherein the at least one at least partially mirrored optical fiber has at least one region that is transparent or semi-transparent.

12. The illumination device of claim 10, wherein the at least one at least partially mirrored light source has at least one light emitting diode.

13. The illumination device of claim 10, wherein the at least one at least partially mirrored light source is arranged on an end face of the optical fiber.

14. The illumination device of claim 10, wherein the at least one at least partially mirrored light source is arrangeable behind a roof panel of the interior space of the vehicle.

15. The illumination device of claim 10, wherein the at least one at least partially mirrored optical fiber has a first portion and a second portion, wherein the first and second portions are arranged at an angle to each other, wherein the first portion is adjustable to a contour of a windscreen, and the second portion is configured to be arranged behind a roof panel.

16. The illumination device of claim 10, wherein the at least one at least partially mirrored optical fiber has a width of from 10 cm to 20 cm.

17. The illumination device of claim 10, wherein the at least one at least partially mirrored optical fiber is flat and extends in at least two spatial directions and is adjustable to a two-dimensional partial region of a windscreen.

18. A vehicle, comprising: a windscreen; an interior space delimited by the windscreen; a roof panel attached to the windscreen; and an illumination device, comprising at least one light source, wherein the light source is a melanopically effective light source, in order to implement a daylight supplement; and at least one light surface formed by at least one at least partially mirrored optical fiber, wherein the at least one at least partially mirrored optical fiber is adjustable to a shape of a windscreen, wherein the illumination device is arranged in a transition region between the windscreen and the roof panel, wherein the at least one at least partially mirrored optical fiber extends from a region behind the roof panel onto a region on an upper edge of the windscreen, such that the at least one light surface is positioned on the windscreen.

Description

BRIEF DESCRIPTION OF THE DRAWING FIGURES

[0028] Here are shown:

[0029] FIG. 1 a possible embodiment of an illumination device according to the invention;

[0030] FIG. 2 a possible arrangement of the illumination device from FIG. 1 inside a vehicle;

[0031] FIG. 3 a possible arrangement of the illumination device in a vehicle.

DETAILED DESCRIPTION

[0032] In FIG. 1a, a sectional depiction of a possible embodiment of an illumination device 1 is reproduced. A light source 2 is arranged in an edge region of an optical fiber 5 or on the end face in relation to this, wherein the optical fiber 5 forms a light surface 3, via which the light coupled into the optical fiber 5 from the light source 2 is irradiated. The light source 2 is here received and fixed in a frame 12. The frame 12 can also fix the optical fiber 5.

[0033] In the embodiment shown, the optical fiber 5 is divided into a first portion 5a and a second portion 5b, wherein at least the first portion 5a is flexible and can be adjusted to a contour of a windscreen (not pictured). The first portion 5a can be designed flexibly overall or can have a flexible surface facing towards the windscreen, depicted here by the surface line with sections arranged at an angle to one another. The second portion 5b, into which the light of the light source 2 is coupled, is arranged horizontally, for example.

[0034] In the embodiment depicted in FIG. 1, the light surface 3 is provided in particular only in the first portion 5a, whereas the second portion 5b serves only to couple in the light from the light source 2 and to forward the light to the first portion 5a and does not have a light surface 3.

[0035] FIG. 1b shows a top view rotated by 90° in comparison to FIG. 1a of the light surface 3 in the region of the first portion 5a. The optical fiber 5 is formed partially transparently and partially semi-transparently (depicted by the dashed surfaces). These transparent or semi-transparent surfaces of the optical fiber 5, which here alternate in the vertical direction, can be specifically calculated and designed for every application.

[0036] A possible arrangement of the illumination device 1 from FIG. 1 inside a vehicle is depicted in FIG. 2. The same components are here provided with the same reference numerals, such that these do not have to be discussed further in detail. The second portion 5b of the optical fiber 5 extends substantially behind a roof panel 8, wherein the light source 2 with the frame 12 is also positioned behind the roof panel 8. In particular, these are those regions of the roof panel 8 in which a sunshield 10 is arranged on the outside.

[0037] With the first portion 5a, the optical fiber 5 is in contact with the windscreen 6. At least in this region, the optical fiber 5 can be adjusted to the shape of the windscreen 6, for example by adjusting the angle between the first portion 5a and the second portion 5b and/or by adjusting the surface, facing towards the windscreen 6, of the first portion 5a.

[0038] The windscreen 6 is connected to a transverse member 7 of the motor vehicle via a pane bonding 9 on its upper end or along the upper edge, along which the optical fiber 5 is also positioned. The light source 2 is arranged between the transverse member 7 and the roof panel 8. The light of the light source 2 is led out of this region behind the roof panel 8 to the light surface 3 via the optical fiber 5 and is irradiated from there in the direction of an eye height of an occupant of the vehicle (not pictured), such that the light reaches the ganglion cells on the retina of the occupant. The region in which the eyes of the occupant are located is labelled with 11 in FIG. 2.

[0039] In particular, light of the wavelength range 460 nm is irradiated. The light incidence of the light from the light source 2 into the interior space is here carried out from the same direction from which daylight from outside the vehicle enters into the interior space. A sufficient luminous power for suppressing the melatonin release is achieved by the additional light irradiation of the light of the light source 2 via the light surface 3. As a result of the high transparency of the optical fiber 5, which is achieved, in particular, by forming as a partially mirrored optical fiber 5, this is carried out with only low transmission losses in the region of the windscreen.

[0040] The optical fiber 5 is coated, in particular, on its side facing away from the vehicle occupant or from the vehicle interior space, in particular vaporized, in order to achieve the desired mirroring or partial mirroring and thus to generate the individual reflective surfaces spaced apart from one another and advantageously provided according to an embodiment of the invention, via which the light coupled into the optical fiber 5 is irradiated in the direction of the occupant or in the direction of the eyes of the occupant. The optical fiber 5 can be designed completely or substantially completely transparently at least in the region of its superposition with the windscreen 6 between these individual reflective surfaces.

[0041] A possible arrangement of the illumination device 1 in a vehicle 13 is depicted in FIG. 3. In the plan view of the vehicle 13, it can be seen that, in each case, one illumination device 1 is arranged on the driver side and on the passenger side. The dashed region here shows the region of the light surface 3 or the rear side of the first portion 5a, positioned behind the windscreen 6, of the optical fiber 5 from FIGS. 1 and 2. In the plan view, the surfaces superimposed by this region have a greater width than height and form, for example, a rectangle. Here, the optical fiber 5 can have, for example, a segmentation between transparent and semi-transparent surfaces corresponding to the depiction of FIG. 1b.

[0042] In principle, the light surface 3 can have a shape deviating from the formation shown here. The arrangement of the transparent or semi-transparent surfaces can also be designed differently to as is shown in FIG. 1b, for example with semi-transparent surfaces arranged one next to the other in the manner of a column, in the form of diagonal strips made of semi-transparent surfaces or in the form of a checked pattern made of semi-transparent surfaces, which alternate correspondingly with transparent surfaces. Instead of semi-transparent surfaces, opaque surfaces could also be provided which alternate with transparent or semi-transparent surfaces.

[0043] Although the invention has been illustrated and described in detail by way of preferred embodiments, the invention is not limited by the examples disclosed, and other variations can be derived from these by the person skilled in the art without leaving the scope of the invention. It is therefore clear that there is a plurality of possible variations. It is also clear that embodiments stated by way of example are only really examples that are not to be seen as limiting the scope, application possibilities or configuration of the invention in any way. In fact, the preceding description and the description of the figures enable the person skilled in the art to implement the exemplary embodiments in concrete manner, wherein, with the knowledge of the disclosed inventive concept, the person skilled in the art is able to undertake various changes, for example, with regard to the functioning or arrangement of individual elements stated in an exemplary embodiment without leaving the scope of the invention, which is defined by the claims and their legal equivalents, such as further explanations in the description.