Lighting device for lighting interior component of motor vehicle

Abstract

The invention relates to a lighting device (20) for an interior component (28) of a motor vehicle (10). The lighting device (20) comprises a light source (22), an interior component (28) and a light guide (24, 26) which connects the light source (22) to the interior component (28) of the motor vehicle (10). In this case, the interior part (28) has a main body (30, 32, 34, 42, 52), into which light emitted by the light source (22) is coupled. The body (30, 32, 34, 42, 52) has a transparent structure-providing surface (62) from which the coupled-in light is radiated. Preferably, the body (30, 32, 34, 42, 52) has at least one boundary surface (54) having a geometry different from a cylindrical, cubic or planar shape. The invention further relates to a perfuming module (70) for a motor vehicle (10) having such a lighting device (20).

Description

Field of the Invention

[0001] The present invention relates to an illumination device for illuminating interior space components of a motor vehicle, in particular a fragrance module in a motor vehicle, and a motor vehicle having such an illumination device. Background Art

[0002] Many solutions and components for illuminating the interior space of a motor vehicle are known. To enhance occupant comfort and personalize the vehicle, for example, illuminated seat belt buckles are used to make it easier to find the seat belt buckle in the dark. Interior space lighting devices in motor vehicles are also known, and these interior space lighting devices can have one or more light units to highlight vehicle components. Thus, in particular, surrounding LED strips are common in the vehicle interior space, where the color of the illumination can be adjusted individually or selected from a defined color spectrum. Such an illumination solution is also referred to as "ambient lighting". In addition, illumination devices for dashboard components, in particular for illuminating air vents, for illuminating components in the console of a motor vehicle, and for illuminating components in the door, in particular switches or speakers, are known.

[0003] Furthermore, fragrance systems with fragrance devices are known from the prior art, in which the fragrance is selectively introduced into the vehicle interior space. This provides a pleasant smell. The carrier gas flow is generated here by a fragrance fan and is conveyed through a fragrance cartridge to be mixed with the volatile fragrance. Modern fragrance systems can also enable the selection of different fragrances.

[0004] A fragrance device for a motor vehicle is known from patent document DE 10 2021 201 272 A1, which includes a housing, a printed circuit board, and at least one cartridge accommodated in the housing, and the cartridge contains a fragrance. Here, in order to achieve an improved visual design and additional visual functions, an illumination device is provided, and at least one lid and / or design element of the fragrance device can be at least partially illuminated by this illumination device.

[0005] Patent document DE 20 2022 106 992 U1 discloses a fragrance device for a motor vehicle, which has a housing and an illumination device arranged on the housing and controllable by a control device of the housing, and the housing has a fragrance cartridge accommodation part for accommodating at least one fragrance cartridge. The control device is arranged to achieve the illumination of the fragrance cartridge accommodation part.

[0006] However, a disadvantage of the known solutions is that only the panel facing the vehicle interior space on the box is illuminated. Therefore, the illumination possibilities are limited. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to improve the lighting of the interior space components in a motor vehicle and create a new lighting experience for the vehicle occupants and thus upgrade the vehicle interior space of the motor vehicle.

[0008] This technical problem is solved by a lighting device for interior space components of a motor vehicle. The lighting device includes a light source, an interior space component, and an optical waveguide that connects the light source to the interior space component of the motor vehicle. Here, the interior space component has a body, and the light emitted by the light source is coupled into the body. The body has a transparent surface providing a structure, and the coupled-in light is radiated from this surface. The lighting system according to the present invention enables the lighting of the interior space component, wherein the coupled-in light of the light source is radiated from the transparent surface of the hollow body (or hollow structure). Thereby, a lighting experience that is perceived by the vehicle occupants as particularly high-quality can be created for the vehicle interior space.

[0009] Advantageous expansions and improvements of the lighting device for a motor vehicle according to the present invention are achieved by the additional features listed in the description.

[0010] In a preferred design of the lighting device, it is provided that the body has at least one boundary surface having a geometric shape different from a cylindrical, cubic, or planar shape. Through such a boundary surface, additional variations in the light radiated from the transparent surface of the interior space component can be achieved. Here, additional refraction of the light occurs, so that the interior space component and / or the lighting experience are perceived as of higher quality.

[0011] In a further preferred design of the present invention, it is provided that the interior space component has a plurality of bodies, and these bodies are supplied with the light of the light source through a common optical waveguide. In this way, it is particularly possible to illuminate a plurality of interior space components with similar geometries, for example, a plurality of bodies arranged in parallel. Here, only one light source is required to illuminate the plurality of interior space components.

[0012] In an advantageous design of the lighting device, it is provided that the optical waveguide is directly coupled into the body or a lid of a box connected to the body. Thereby, particularly uniform illumination of the body of the interior space component can be achieved. This uniform illumination is perceived by many passengers as particularly comfortable and of high quality.

[0013] In a preferred design of the lighting device, it is provided that the optical waveguide divides into a first optical waveguide and a second optical waveguide at a branching point starting from the light source. Dividing the optical waveguide into a first optical waveguide and a second optical waveguide enables further improvement of the illumination of the interior space component. In addition, the design possibilities for illuminating the interior space component are expanded again, so that the lighting experience can be further improved.

[0014] Here, preferably, a first coupling input surface is designed on the internal space component, and the light of the first light guide is coupled into the internal space component on the first coupling input surface. And, a second coupling input surface is designed on the internal space component, and the light of the second light guide is coupled into the internal space component on the second coupling input surface. Through multiple couplings of light on different sides of the main body, a particularly comfortable lighting design can be achieved. In addition to reflecting various design elements of the internal space component through light, words, logos, such as the name of the internal space component, the manufacturer's logo, or the like can also be correspondingly displayed through light.

[0015] Here, it is particularly preferred that the first coupling input surface and the second coupling input surface are designed on different sides or different surfaces of the internal space component, in particular on opposite sides or surfaces or on sides or surfaces arranged at right angles to each other. Thereby, additional light effects can be achieved, which are realized, for example, due to uneven refraction on the surface of the vehicle interior space component.

[0016] According to an advantageous design of the lighting device, the light source includes an LED, an OLED, a micro-LED, or a laser diode. Thereby, the internal space component can be illuminated particularly energy-efficiently. In addition, in the case of illumination by an LED, a micro-LED, or an OLED, color changes can be controlled, so that the transparent surface of the internal space component can be illuminated in different colors. Here, the color change of the illumination can be achieved according to the operating parameters of the internal space component. For example, for the fragrance module, color changes can be achieved according to the filling degree of the cartridge, the fragrance intensity, or the selected fragrance. In addition, the operating surface can be correspondingly illuminated to facilitate the operation of the internal space component.

[0017] Another aspect of the present invention relates to a fragrance module for a vehicle interior of a motor vehicle, which has at least one illuminable cartridge, preferably a plurality of illuminable cartridges. The cartridges have a transparent surface providing a structure and such a lighting device. Thereby, the fragrance experience in the vehicle interior can be visually supported by the lighting device, so as to create a particularly pleasant atmosphere in the vehicle interior.

[0018] The present invention also relates to a motor vehicle having a vehicle interior in which such a lighting device is arranged.

[0019] The different embodiments of the present invention mentioned in this application can be advantageously combined with each other if not otherwise specified separately. Description of the Drawings

[0020] The present invention will be described below in embodiments with reference to the drawings. In the drawings:

[0021] Figure 1Shows the interior space of a motor vehicle with a lighting device according to the invention;

[0022] Figure 2 Shows a top view of a preferred embodiment of a lighting device according to the invention for an interior space component of a motor vehicle;

[0023] Figure 3 Shows the lighting device according to the invention for an interior space component of a motor vehicle in Figure 2 Side view of the preferred embodiment shown;

[0024] Figure 4 Shows the lighting device according to the invention for an interior space component of a motor vehicle in Figure 2 And Figure 3 Three - dimensional view of the preferred embodiment shown; and

[0025] Figure 5 Shows a further embodiment of an interior space component of a motor vehicle that can be illuminated, which interior space component can be illuminated with a lighting device according to the invention. Detailed Description

[0026] Figure 1 Shows the interior space 18 of a motor vehicle 10. The motor vehicle 10 includes a vehicle body 12, as well as vehicle doors 14 and window panes 16. The vehicle body, vehicle doors, and window panes define the boundaries of the interior space 18 and enable access to the interior space. Here, a lighting device 20 is provided in the interior space 18, and the interior space components 28 can be illuminated accordingly by this lighting device. Preferably, the illumination of the interior space components 28 is integrated into the ambient lighting device 78 of the interior space 18 of the motor vehicle.

[0027] In Figure 2 Shows a top view of a preferred embodiment of a lighting device 20 according to the invention for an interior space component 28 of a motor vehicle 10. The lighting device 20 includes a light source 22, preferably an LED 72, an OLED 74, or a laser diode 76. The light source 22 has a coupling input element 64, and the light of the light source 22 is coupled onto this coupling input element into light guides 24, 26 connected to the light source 22, and these light guides connect the light source 22 with the interior space component 28.

[0028] The light guides 24, 26 have a branching point 44, at which the light guides 24, 26 branch in a Y - shape into a first light guide 24 and a second light guide 26. Wherein, the first light guide 24 guides the light of the light source 22 to a first coupling input surface 66 on the body 52 of the interior space component 28, and the second light guide 26 guides the light of the light source 22 to a second coupling input surface 68 on the body 52 of the interior space component 28.

[0029] In this embodiment, the interior space component 28 is designed as a fragrance module 70 for fragrancing the vehicle interior space 18, and the fragrance module has a first cartridge 30, a second cartridge 32, and a third cartridge 34. The cartridges 30, 32, 34 are designed as fragrance cartridges 42 and are provided for storing fragrances that can be released into the vehicle interior space 18. The cartridges 30, 32, 34 each have cartridge lids 36, 38, 40, and the cartridges 30, 32, 34 can be closed by the cartridge lids.

[0030] Three coupling output structures 46, 48, 50 are respectively designed on the light guides 24, 26 so as to couple out light from the corresponding light guides 24, 26 and couple it into the body 52 of the interior space component 28.

[0031] The interior space component 28 has a transparent surface 62, and the light coupled into the body 52 of the interior space component 28 is radiated on this surface. Here, the body 52 of the interior space component 28 preferably has at least one boundary surface 54, and this boundary surface has a geometric shape different from a cylindrical, cubic, or planar shape. Such a boundary surface 54 can in particular be realized by the shaping of the vehicle interior space component 28, and in particular such a boundary surface 54 is designed on the cartridges 30, 32, 34 in order to enhance the visual impression of the cartridges 30, 32, 34. Alternatively or additionally, further design elements 56, such as a logo 58 or a lettering 60, can be designed on the body 52 or the lids 36, 38, 40 of the interior space component 28 in order to improve the visual impression of the interior space component 28. These further design elements 56, 58, 60 can also be illuminated by the lighting device 20, thereby creating a high-quality lighting experience for vehicle occupants. In particular, the lighting of the interior space component 28 can be integrated into or coupled with the ambient lighting device 78 of the vehicle interior space 18 in order to create a preferably individually adjustable feel-good atmosphere. In addition, in the case where the interior space component 28 is designed as a fragrance module 70, a lighting experience that is coordinated with or visually supports the fragrancing of the vehicle interior space 18 can be created.

[0032] In Figure 3 a side view of a preferred embodiment of the lighting device 20 according to the invention for an interior space component 28 of a motor vehicle 10 is shown. The lighting device 20 includes a light source 22, preferably an LED 72, an OLED 74, a micro-LED, or a laser diode 76. The light source 22 has a coupling input element 64, and the light of the light source 22 is coupled onto this coupling input element and into the light guides 24, 26 connected to the light source 22, and these light guides connect the light source 22 to the interior space component 28.

[0033] The light guides 24, 26 have a branching point 44 at which the light guides 24, 26 branch off in a Y-shape into a first light guide 24 and a second light guide 26, where the first light guide 24 guides the light of the light source 22 to a first coupling input surface 66 on the body 52 of the interior space component 28, and the second light guide 26 guides the light of the light source 22 to a second coupling input surface 68 on the body 52 of the interior space component 28.

[0034] Here, the coupling input of light from the light guides 24, 26 into the lid 36, 38, 40 of the boxes 30, 32, 34 respectively is carried out on the boundary surface 54, which has a structured surface 62 and thus serves to refract the light. Thereby, a particularly impressive lighting experience can be created.

[0035] The coupling input of the two light guides 24, 26 takes place on opposite sides of the lids 36, 38, 40, thereby achieving a particularly uniform illumination of the vehicle interior space component 28, in particular the boxes 30, 32, 34 of the fragrance module 70.

[0036] In Figure 4 a three-dimensional view of a preferred embodiment of the lighting device 20 according to the invention for the interior space component 28 of a motor vehicle 10 is shown. In particular, it can be seen here that the light guides 24, 26 branch off into a first light guide 24 and a second light guide 26 at the branching point 44 starting from the light source 22. Furthermore, in Figure 4 it can be seen particularly easily how the light is coupled from the two light guides 24, 26 into the coupling input surfaces 66, 68 of the interior space component 28 on the respective coupling output structures 46, 48, 50.

[0037] As an alternative to the coupling input on both sides of the lids 36, 38, 40, it is also possible to couple the input into the lids and into the body 52 of the respective boxes 30, 32, 34 in order to achieve an alternative design of the lighting.

[0038] In Figure 4 it can also be seen that the light coupled into the lids 36, 38, 40 or the body 52 radiates through the transparent, structured surface 62, thereby enabling a corresponding scattering of the light in the vehicle interior space 18, which means a particularly comfortable lighting experience.

[0039] In Figure 5Fig. shows an interior vehicle space component 28 that can be illuminated and a further embodiment of the lighting device 20 according to the invention. The interior space component 28 has a body 52 and a lid 36, on which at least one transparent structured surface 62 is designed respectively in order to radiatively couple in the light input into the interior space component 28. In this embodiment, the light source 22 can comprise a plurality of LEDs or OLEDs, each of which has a color-changing mechanism. In this way, the different cartridges 30, 32, 34 of the fragrance module 70 can be illuminated in different colors. It is also feasible to differently adjust the light source 22 in terms of its illumination intensity, so that one cartridge 30, 32, 34 can be illuminated more brightly than the remaining cartridges 30, 32, 34. It is also feasible to only illuminate a partial number of cartridges 30, 32, 34 and the corresponding remaining partial number of cartridges 30, 32, 34 is not illuminated. Thus, for example, in the case where the fragrance module 70 has a plurality of different fragrance cartridges 42, it is possible to visually highlight which fragrance cartridges 42 are in an active state.

[0040] List of reference numerals

[0041] 10 Motor vehicle

[0042] 12 Body

[0043] 14 Door

[0044] 16 Window glass

[0045] 18 Vehicle interior space

[0046] 20 Lighting device

[0047] 22 Light source

[0048] 24 First light guide

[0049] 26 Second light guide

[0050] 28 Interior space component

[0051] 30 First cartridge

[0052] 32 Second cartridge

[0053] 34 Third cartridge

[0054] 36 First cartridge lid

[0055] 38 Second cartridge lid

[0056] 40 Third cartridge lid

[0057] 42 Fragrance cartridge

[0058] 44 (Light guide) branching point

[0059] 46 First coupling output structure

[0060] 48 Second coupling output structure

[0061] 50 Third coupling output structure

[0062] 52 Main body

[0063] 54 Boundary surface

[0064] 56 Design element

[0065] 58 Logo

[0066] 60 Lettering

[0067] 62 Surface

[0068] 64 Coupling input element

[0069] 66 First coupling input surface

[0070] 68 Second coupling input surface

[0071] 70 Flavoring device

[0072] 72 LED

[0073] 74 OLED

[0074] 76 Laser diode

[0075] 78 Ambient lighting device

Claims

1. A lighting device (20) for an interior space component (28) of a motor vehicle (10), comprising: - a light source (22); - an interior space component (28); and - a light guide (24, 26) that connects the light source (22) to the interior space component (28) of the motor vehicle (10), wherein, - the interior space component (28) has a body (30, 32, 34, 42, 52) into which light emitted by the light source (22) is coupled, wherein, - the body (30, 32, 34, 42, 52) has a transparent surface (62) providing a structure from which the coupled-in light is radiated.

2. The lighting device (20) according to claim 1, wherein, The body (30, 32, 34, 42, 52) has at least one boundary surface (54) having a geometric shape different from a cylindrical, cubic or planar shape.

3. The lighting device (20) according to claim 1 or 2, wherein, The interior space component (28) has a plurality of bodies (30, 32, 34, 42, 52) that are supplied with light from the light source (22) through a common light guide (24, 26).

4. The lighting device (20) according to any one of claims 1 to 3, wherein, The body (30, 32, 34, 42, 52) is a cartridge (30, 32, 34), in particular a fragrance cartridge (42), of an aroma module (70) for the vehicle interior space (18) of the motor vehicle (10).

5. The lighting device (20) according to any one of claims 1 to 4, wherein, The light guide (24, 26) is directly coupled into the body (52) or into a cartridge lid (36, 38, 40) connected to the body (52).

6. The lighting device (20) according to any one of claims 1 to 5, wherein, The light guide (24, 26) branches at a branching point (44) into a first light guide (24) and a second light guide (26) starting from the light source (22).

7. The lighting device (20) according to claim 6, wherein, A first coupling-in surface (66) is designed on the interior space component (28), and light from the first light guide (24) is coupled into the interior space component (28) on the first coupling-in surface, and wherein a second coupling-in surface (68) is designed on the interior space component (28), and light from the second light guide (26) is coupled into the interior space component (28) on the second coupling-in surface.

8. The lighting device (20) according to claim 7, wherein, The first coupling-in surface (66) and the second coupling-in surface (68) are designed on different sides or different surfaces of the interior space component (28).

9. The lighting device (20) according to any one of claims 1 to 8, wherein, The light source (22) includes an LED (72), an OLED (74), a micro-LED or a laser diode (76).

10. An aroma module (70) for a motor vehicle (10), comprising at least one illuminable cartridge (30, 32, 34) having a transparent, structure-providing surface (62) and a lighting device (20) according to any one of claims 1 to 9.

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