초록 ▼

The present invention relates to a light-guiding system for improving the lighting conditions of the passenger compartment of a motor vehicle, including a light-generating unit (3) which can be switched on and off electrically and a light guide (5) which is used for guiding the light and which is co

The present invention relates to a light-guiding system for improving the lighting conditions of the passenger compartment of a motor vehicle, including a light-generating unit (3) which can be switched on and off electrically and a light guide (5) which is used for guiding the light and which is coupled to the light-generating unit (3) for coupling in the light. According to the present invention, the light guide (5) is arranged in the area of the interior lining of the vehicle roof (1) and designed as a flat light guide, the light being coupled in at one or more lateral surfaces (7, 8) of the light guide (5); and the flat light guide (5) being prepared such that the light couples out of the light guide (5) into the passenger compartment (2) of the vehicle over a large surface and in a homogeneous manner.

대표청구항 ▼

1. A light-guiding system for improving the lighting conditions in the passenger compartment of a motor vehicle, comprising:a light-generating unit for generating light and capable of being switched on and off electrically; and a flat light guide having lateral edge surfaces, the light guide for gui

1. A light-guiding system for improving the lighting conditions in the passenger compartment of a motor vehicle, comprising:a light-generating unit for generating light and capable of being switched on and off electrically; and a flat light guide having lateral edge surfaces, the light guide for guiding the light, the light guide being coupled to the light-generating unit for coupling in the light, the light guide being arranged in an area of an interior lining of a roof of the motor vehicle, the light being coupled in at one or more of the lateral surfaces and coupled out of the light guide into the passenger compartment of the vehicle over a large surface in a homogeneous manner, the light guide having a flat surface facing away from the passenger compartment and being structured by roughening, embossing, or boring with a plurality of structures, each of the structures having one of a pyramid shape, a wedge shape and a cone shape and having an edge length of said structure between 1 μm and 3 μm and an angle inclination between 20° and 70°. 2. The light-guiding system as recited in claim 1, wherein the flat light guide includes a transparent thermoplastic.3. The light-guiding system as recited in claim 2, wherein the thermoplastic is polymethyl methacrylate or polycarbonate.4. The light-guiding system as recited in claim 1, wherein the light guide has a thickness of 0.1 to 5 cm and a width of 1 to 3 m.5. The light guiding-system as recited in claim 4, wherein the thickness is between 0.3 and 1.5 cm.6. The light-guiding system as recited in claim 1, wherein the light-generating unit is one or more fluorescent tubes, lighting cords, or light-emitting diodes.7. The light-guiding system as recited in claim 1, wherein the light-generating unit is integrated in the flat light guide.8. A light-guiding system for improving the lighting conditions in the passenger compartment of a motor vehicle, comprising:a light-generating unit for generating light and capable of being switched on and off electrically; and a flat light guide having lateral edge surfaces, the light guide for guiding the light, the light guide being coupled to the light-generating unit for coupling in the light, the light guide being arranged in an area of an interior lining of a roof of the motor vehicle, the light being coupled in at one or more of the lateral surfaces and coupled out of the light guide into the passenger compartment of the vehicle over a large surface in a homogeneous manner, the light guide having a surface facing away from the passenger compartment including a plurality of structures, each of the structures having one of a pyramid, a wedge and a cone shape and having an edge length of said structure between 1 μm and 3 μm and an angle inclination between 20° and 70°; and a reflecting cover situated between the roof and the light guide, the reflecting cover not being in optical contact with the light guide. 9. The light-guiding system as recited in claim 8, wherein the light-generating unit is one or more fluorescent tubes, lighting cords, or light-emitting diodes.10. The light-guiding system as recited in claim 8, wherein the light-generating unit is integrated in the flat light guide.11. A light-guiding system for improving the lighting conditions in the passenger compartment of a motor vehicle, comprising:a light-generating unit for generating light and capable of being switched on and off electrically; and a flat light guide having lateral edge surfaces, the light guide for guiding the light, the light guide being coupled to the light-generating unit for coupling in the light, the light guide being arranged in an area of an interior lining of a roof of the motor vehicle, the light being coupled in at one or more of the lateral surfaces and coupled out of the light guide into the passenger compartment of the vehicle over a large surface in a homogeneous manner, the light guide having a surface facing away from the passenger compartment including a plurality of structures, each of the structures having one of a pyramid, a wedge and a cone shape and having an edge length of said structure between 1 μm and 3 μm and an angle inclination between 20° and 70°; and a diffusing panel arranged on a surface of the light guide facing the passenger compartment of the vehicle, the diffusing panel not being in optical contact with the light guide. 12. The light-guiding system as recited in claim 11, wherein the light-generating unit is one or more fluorescent tubes, lighting cords, or light-emitting diodes.13. The light-guiding system as recited in claim 11, wherein the light-generating unit is integrated in the flat light guide.