Motor vehicle light having a lightguide
A technology for light conductors and motor vehicles, which is applied in the direction of light guides, semiconductor devices of light-emitting elements, light guides of lighting systems, etc., and can solve problems such as small access surfaces, inability to produce, and limited efficiency
Active Publication Date: 2016-09-28
AUTOMOTIVE LIGHTING REUTLINGEN GMBH
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Problems solved by technology
But this leads to the light guide having a very small access surface, which leads to the fact that only a small part of the light emitted from the light source enters into the light guide, which in turn limits the efficiency
[0008] A further disadvantage of the prior art is that, in another known decoupling configuration, the decoupling elements are arranged on the upper and / or lower light guide sides, so that it is not possible to produce surfaces that emit light perpendicular to the direction of travel.
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[0040] Figure 1 shows a top view of the vehicle head. The x-direction corresponds to the direction of travel in which the central longitudinal axis 10 of the vehicle also lies. The y-direction corresponds to a direction lying horizontally and parallel to the transverse axis 12 of the vehicle, and the z-direction corresponds to a direction pointing vertically upwards and parallel to the vertical axis of the vehicle. The dust cover 16 with the light guide 18 behind it and the light source that feeds the light into the light guide is basically visible from the lighting device 14 of the headlight on the left in the illustrated case. 20. With reference to the arrangement of the light guide, the light source is arranged at the proximal end of the light guide relative to the central vehicle longitudinal axis.
[0041] The light guide encloses a first angle α with the negative y-direction. In combination with the symmetrical arrangement of the light guides of the right-hand headlig...
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A motor vehicle light (14) having a lightguide (18) is presented, said lightguide (18) having a first longitudinal side (24) and deflection elements (36) which are arranged on its first longitudinal side and are configured to deflect light which is incident from the interior in such a way that the deflected light exits the lightguide. The light is distinguished by the fact that the deflection elements have a deflection prism (38) with a first reflection face (40) and a second reflection face (42) which are configured in such a way that light which propagates within the lightguide and in the process is incident on one of the two deflection faces is initially deflected by said reflection faces (40, 42) to the respective other of the two deflection faces in such a way that the specified deflection with respect to the second longitudinal side is produced as a sum of the deflections occurring at the two deflection faces.
Description
technical field [0001] The invention relates to a motor vehicle lamp according to the preamble of claim 1 . Background technique [0002] Such motor vehicle lamps are known per se and have an optical waveguide which has a first longitudinal side and a second longitudinal side lying opposite the first longitudinal side. A deflection element is arranged on the first longitudinal side, which is arranged to deflect the light incident on the deflection element from the interior of the light guide towards the second longitudinal side, so that the deflected light is inclined there so that the light passes through the second longitudinal side. side emerges from the light guide. [0003] In modern motor vehicles, signal lights arranged especially in the front of the vehicle, such as flashing lights and daytime running lights, have a pronounced arrowhead shape. Here, the shape of the arrow is understood to be the angle between the transverse axis of the vehicle and the outer contour...
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IPC IPC(8): F21S8/10F21V8/00F21Y115/10
CPCF21S43/14F21S43/237F21S43/239F21S43/245F21S43/247F21S43/249G02B6/0028G02B6/0036G02B6/0078
Inventor H·兹维克H·凯勒曼
Owner AUTOMOTIVE LIGHTING REUTLINGEN GMBH