Signal lighting or lighting device for a vehicle

Abstract

Signal light or lighting device (1) for a motor vehicle or for a motor vehicle headlight, comprising a light source (2), a light guide (3) associated with the light source (2), wherein the light guide (3) has a first section (5), a second section (6), and a first deflecting element (7), wherein the first section (5) is configured as a first light guide channel and the second section (6) as a second light guide channel, wherein the first deflecting element (7) connects the first section (5) to the second section (6) in a light-guiding manner, wherein the first light guide channel has optical structures (9) which are configured to deflect light rays coupled into the first light channel, wherein the deflection by the optical structures (9) is such that deflected light illuminates deflecting elements (8) of the second section (6) substantially uniformly,so that the light emerging from the second section (6) has a constant light intensity.

Description

Technical field

[0001] The invention relates to a signal light or lighting device for a motor vehicle or for a motor vehicle headlight, comprising: at least one light source for emitting light rays, one light guide associated with the at least one light source, wherein the light guide is configured to receive light from the at least one light source via a light coupling area of ​​the light guide, to guide it through the light guide and to couple it out at a light coupling area of ​​the light guide along a main emission direction, wherein the light guide body comprises a first section, a second section, and a first deflecting element, wherein the first section is configured as a first light guide channel which is bounded by a first lateral surface and has a first longitudinal extent, wherein preferably the first section is configured such that its first longitudinal extent runs along the main emission direction, wherein the light coupling area is formed at one end of the first section facing the at least one light source, wherein the light coupling area is configured, for example in the form of a collimator, such that the light rays emitted by the at least one light source are parallelized after coupling into the first section parallel to a first plane, and in particular are not parallelized along a second plane which is different from the first plane, preferably orthogonal to the first plane.and propagate along the main emission direction through the first section, wherein the second section is configured as a second light guide channel, which is bounded by a second lateral surface and has a second longitudinal extent, wherein the second section is oriented to the first section such that its second longitudinal extent runs along a second direction, which is oriented differently from the main emission direction, wherein the second lateral surface has a back and a front opposite the back, wherein the back has, at least section by section, second deflecting elements along the second longitudinal extent, which are configured to deflect light which propagates within the second section and strikes the second deflecting elements towards the front, wherein a, preferably opposite the second deflecting elements,The front section forms the light output area, through which light deflected by the second deflecting elements is coupled out of the second section of the light guide body, for example as a signal light function, wherein the first deflecting element connects the first section to the second section in a light-guiding manner and is configured to deflect light coupled into the first section, after passing through the first section, into the second section, in particular by means of total internal reflection, so that deflected light propagates within the second section along the second direction.

[0002] The invention further relates to a motor vehicle or a motor vehicle headlight, comprising a signal light or lighting device. Technical background

[0003] In the prior art, signal lighting or illumination devices (hereinafter referred to as "device") composed of several (optically effective) sections are known. Often, for example due to a predetermined installation position of the optically effective components of the device, it is necessary to arrange the various sections in a specific geometry relative to one another. This, in turn, may require multiple light deflections within the device to achieve a specific light propagation path between a light coupling area and a light coupling area. However, deflecting light from one section to the next has the disadvantage that light intensity... " lost "The light cannot be transferred uniformly from one section to the next. Therefore, the output surfaces in the last sections, from which the light is emitted as a light function, usually have inhomogeneously luminous surfaces.

[0004] The object of the present invention is to alleviate or eliminate the disadvantages of the prior art. The invention therefore aims in particular to create a signal light or lighting device in which the homogeneity of the light emitted by the signal light or lighting device is increased.

[0005] This problem is solved by a signal light or lighting device having the features of claim 1. Preferred embodiments are specified in the dependent claims. Brief description of the invention

[0006] According to the invention, the first lateral surface of the first light guide channel has, at least section by section, optical structures along the first longitudinal extent of the first section, which are configured to deflect light rays coupled in via the light coupling area, wherein the deflection by the optical structures is such that light deflected by the optical structures, after being deflected by the first deflecting element in the direction of the second section, illuminates the second deflecting elements of the second section substantially uniformly, such that light exiting the output coupling area of ​​the second section has a substantially constant light intensity per output coupling area unit over the entire output coupling area.

[0007] This offers the advantage that light deflected from the first section to the second section is emitted homogeneously, or uniformly, from the second section, i.e., at each output surface. As a result, the light output area of ​​the optical element can be perceived as a uniformly bright surface. Due to the optical structures, the light can be more parallel along the emission direction within the first section than it would be without these structures. For example, if a light beam undergoes total internal reflection multiple times along the first section, the angle between the light beam and the optical axis can be further reduced with each reflection. This causes the light beam along the first longitudinal extent of the first section to become increasingly aligned with, or parallel to, the main emission direction.

[0008] It can be provided that the optical structures are designed to deflect light rays in such a way that the light rays reflected by the optical structures have an angle to the main direction of emission that is smaller than the angle that would exist between the main direction of emission and light rays that would be reflected by a fictitious, smooth or flat, surface free of optical structures. In other words, after being deflected or totally reflected by the optical structures, " parallel " to the main direction of radiation as before the deflection by the optical structures.

[0009] It can be provided that the first section is oriented to the second section such that the first longitudinal extension of the first section and the second longitudinal extension of the second section enclose an obtuse angle, wherein in particular the angle is greater than 90° and preferably less than 160°, wherein preferably the first deflecting element is arranged at one end of the first section facing away from at least one light source.

[0010] It can be provided that the second deflection elements are cylindrical in shape, with their cylindrical axes extending orthogonally to the main emission direction at the rear, and in particular extending orthogonally to the second longitudinal extent or to the second direction, wherein the cylindrical second deflection elements are configured to deflect light which propagates within the second section and strikes the cylindrical second deflection elements towards the front, wherein preferably the cylindrical second deflection elements and the light extraction area are configured such that the deflected light rays are oriented parallel to the main emission direction after extraction from the second section.

[0011] It can be provided that the second deflection elements are designed as a plurality of deflection prisms, which are arranged in a, preferably rectangular, grid on the back side, wherein each deflection prism has a deflection surface designed for light deflection, preferably by means of total internal reflection, and at least one side surface, in particular two side surfaces, wherein preferably the deflection prisms are designed such that the area of ​​the deflection surfaces increases along the second longitudinal extent and preferably the at least one side surface is parallel to the second longitudinal extent.The deflecting prisms are oriented towards the second direction, preferably being configured such that their deflecting surfaces each have a specific angle of incidence to a virtual backside plane, which the backside follows, wherein the backside plane is oriented parallel to the second longitudinal extent, and wherein the angles of incidence increase along the second longitudinal extent such that light rays deflected by the deflecting prisms are oriented parallel to each other along the entire second longitudinal extent after their deflection at the deflecting surfaces. In particular, light rays propagating within the second section can strike the backside (or the deflecting surfaces) at different angles relative to the second longitudinal extent or relative to the backside plane.With the increasing angles of inclination of the deflecting prisms described here, which occur along the second longitudinal dimension, the light rays deflected by the deflecting prisms and coupled out of the second section can be oriented parallel to each other and, in particular, parallel to the main emission direction. Furthermore, the increasing surface area of ​​the deflecting surfaces along the second longitudinal dimension allows for the emission of a uniform luminous flux or constant light intensity across the entire light coupling area (or light coupling surface) of the second section.

[0012] It may be provided that the first lateral surface of the first section has a top surface and a bottom surface opposite the top surface, with the optical structures being arranged on the top surface and / or the bottom surface.

[0013] It can be provided that the optical structures are designed as third deflection elements, for example as a plurality of deflection prisms or step-shaped deflection structures, which are arranged along a section of the lateral surface along the main emission direction and are preferably arranged at uniform intervals or directly adjacent to one another on the lateral surface, wherein preferably the third deflection elements each have a deflection surface, in particular a planar surface, for deflecting, in particular for total internal reflection, of light, wherein the deflection surfaces of the third deflection elements in particular have a transverse extension orthogonal to the main emission direction, wherein preferably each deflection surface of a third deflection element is inclined to the main emission direction.

[0014] It may be provided that the second section is oriented to the first section in such a way that the back side of the second lateral surface faces the at least one light source and the front side of the second lateral surface faces away from the at least one light source.

[0015] It can be provided that the first section and the second section are each designed in a plate-like shape, wherein a length and a width of the first section lie in the plane which is parallel to the main emission direction, and a height of the first section lies in the second plane which is oriented orthogonally to the plane, wherein preferably the second section extends from an end face of the plate-like first section facing away from the light source along the second longitudinal extent.

[0016] It can be provided that the first deflecting element is designed to be totally reflective, in particular as a totally reflective mirror, and is configured to deflect the light that has passed through the first section, preferably completely, into the second section.

[0017] It may be provided that the first section is formed integrally with the second section, wherein the first section is connected to the second section via a connecting section of the light guide body, the connecting section comprising the first deflecting element.

[0018] It may be provided that the first section and the second section are designed as light-guiding, preferably transparent, solid bodies.

[0019] It can be provided that the first section and the second section are designed and oriented towards each other in such a way that light in the first section propagates along the main emission direction, and that after being deflected by the first deflecting element in the second section, light propagates along a deflection direction which forms an obtuse angle with the main emission direction, wherein the deflection direction is oriented along the second longitudinal extension, and wherein the second section is designed in such a way that light coupled out of the light coupling area of ​​the second section is oriented parallel to the main emission direction.

[0020] It may be provided that the main direction of emission lies in a horizontal plane – in an installation position of the signal light or lighting device in a motor vehicle or in a motor vehicle headlight.

[0021] The signal light or lighting device may be provided to have a plurality of light sources arranged side by side along a width which is oriented orthogonally to the main direction of emission, wherein the light coupling area of ​​the first section has a plurality of collimators, each collimator being assigned a light source.

[0022] The signal light or lighting device may include a diffusing element 10, preferably a diffusing disk, which is arranged along the main emission direction after the second section, wherein the diffusing element has a light entry surface facing the light extraction area of ​​the second section and a light exit surface facing away from the light extraction area of ​​the second section, wherein the diffusing element is configured to receive light coupled out of the light extraction area of ​​the second section via the light entry surface and to emit it as scattered, preferably diffuse, light via the light exit surface.

[0023] It may be provided that the first plane is orthogonal to the second plane, with both the first and second planes being oriented parallel to the main emission direction. It may also be provided that – in an installation position of the signal light or lighting device in a motor vehicle or in a motor vehicle headlight – the first plane is a horizontal plane and the second plane is a vertical plane, with the main emission direction being particularly parallel to an intersection of the horizontal and vertical planes.

[0024] According to a second aspect of the invention, a motor vehicle or motor vehicle headlight is provided, comprising a signal light or lighting device. Brief description of the characters

[0025] The invention is further explained below with reference to a preferred embodiment, to which it is not, however, limited. The (schematic) drawings show: Fig. 1 a perspective view of an embodiment of a signal light or lighting device according to the invention; Fig. 2 a perspective rear view of the device according to Fig 1 ; Fig. 2a a schematic view of two levels; Fig. 3 a side view of the device according to Fig 1 ; Fig. 4 a detailed view of Fig. 3 ; Fig. 5 another perspective view of the device according to Fig 1 ; Fig. 6 a detailed view of a first section; and Fig. 7 A top view of a first section.

[0026] Within the context of this description, the terms "top", "bottom", "horizontal", "vertical" are to be understood as indications of orientation when the signal light or lighting device is arranged in its normal operating position after it has been installed in a motor vehicle headlight or motor vehicle. Detailed description of the embodiments

[0027] Fig. 1, Fig. 2 and Fig. 3 show views of a signal light or lighting device 1 (hereinafter referred to as "device") for a motor vehicle or for a motor vehicle headlight.

[0028] The device 1 comprises at least one light source 2 for emitting light rays.

[0029] The device 1 further comprises a light guide 3 associated with the at least one light source 2. The light guide 3 is configured to receive light from the at least one light source via a light coupling area 4a of the light guide 3, to guide it through the light guide 3, and to couple it out at a light coupling area 4b of the light guide 3 along a main emission direction x. The light guide 3 has a first section 5, a second section 6, and a first deflecting element 7.

[0030] In the illustrated embodiment, the main emission direction x lies in a horizontal plane (in an installation position of the signal light or lighting device in a motor vehicle or in a motor vehicle headlight).

[0031] The first section 5 is configured as a first light guide channel, which is bounded by a first lateral surface 5a and has a first longitudinal extent L1. In the illustrated embodiment, the first section 5 is configured such that its first longitudinal extent L1 runs along the main emission direction x. The light coupling area 4a is formed at one end of the first section 5 facing the at least one light source 2. The light coupling area 4a is configured, for example, in the form of a collimator, such that the light rays emitted by the at least one light source 2 are paralleled to a first plane E1 after coupling into the first section 5, and, in particular, are not paralleled along a second plane E2, which is different from the first plane E1, preferably orthogonal to the first plane E1, and propagate through the first section along the main emission direction x.

[0032] Fig. 2a The diagram shows the orientation of planes E1 and E2 relative to each other. The first plane E1 is orthogonal to the second plane E2, with both planes E1 and E2 being oriented parallel to the main radiation direction x.

[0033] The second section 6 is also designed as a second light guide channel, which is bounded by a second lateral surface 6a and has a second longitudinal extent L2. The second section 6 is oriented relative to the first section 5 such that its second longitudinal extent L2 runs along a second direction R2, which is oriented differently from the main emission direction x. The second lateral surface 6a has a back side RS and a front side VS opposite the back side RS. The back side RS has, at least partially along the second longitudinal extent L2, second deflecting elements 8. These are configured to deflect light propagating within the second section 6 and encountering the second deflecting elements 8 towards the front side VS.In the illustrated embodiment, a section of the front face VS opposite the second deflecting elements 8 forms the light coupling area 4b, through which light deflected by the second deflecting elements 8 is coupled out of the second section 6 of the light guide body 3, for example as a signal lighting function.

[0034] The first deflecting element 7 connects the first section 5 to the second section 6 in a light-guiding manner and is configured to deflect light coupled into the first section 5, after passing through the first section 5, into the second section 6, in particular by means of total internal reflection, so that the deflected light propagates within the second section 6 along the second direction R. In the illustrated embodiment, the first deflecting element 7 is arranged at one end of the first section 5 facing away from the at least one light source 2. The first deflecting element 7 can be designed as a totally internal reflecting mirror.

[0035] In the illustrated embodiment, the first section 5 is oriented to the second section 6 such that the first longitudinal extension L1 of the first section 5 and the second longitudinal extension L2 of the second section 6 form an obtuse angle. This angle is greater than 90° and preferably less than 160°.

[0036] In the illustrated embodiment, the second deflecting elements 8 are configured as a plurality of deflecting prisms arranged in a, preferably rectangular, grid on the rear surface RS. Each deflecting prism comprises a deflecting surface designed for light deflection, preferably by means of total internal reflection, and at least one, preferably two, side surfaces. The deflecting prisms are configured such that the areas of the deflecting surfaces increase along the second longitudinal dimension and their side surfaces are oriented parallel to the second longitudinal dimension L2 or to the second direction R2. The deflecting prisms are further configured such that their deflecting surfaces each have a specific angle of incidence to a virtual rear surface plane, which the rear surface RS follows. The (virtual) rear surface plane is oriented essentially parallel to the second longitudinal dimension L2.The angles of incidence increase along the second longitudinal dimension L2 such that, after being deflected by the prisms, the light rays are oriented parallel to each other along the entire length of the second longitudinal dimension L2. By increasing the deflection area and the angle of incidence along the second longitudinal dimension L2, a particularly homogeneous light extraction from the second section 6 can be achieved.

[0037] As in Fig. 4 It can be seen that the second section 6 is oriented to the first section 5 in such a way that the back side RS of the second lateral surface 6a faces the at least one light source 2 and the front side VS of the second lateral surface 6a faces away from the at least one light source.

[0038] As in Fig. 5As can be seen, the first section 5 and the second section 6 are each designed in a plate-like shape. A length and a width of the first section 5 lie in the plane E1, where plane E1 is parallel to the main emission direction x. A height of the first section 5 lies in the second plane E2, which is oriented orthogonally to plane E1. The second section 6 extends from one end face of the plate-like first section 5, facing away from the light source 2, along the second longitudinal dimension L2.

[0039] As in Fig. 3 and Fig. 4 It is evident that the first lateral surface 5a of the first light guide channel exhibits optical structures 9 at least section by section along the first longitudinal extent L1 of the first section 5. These are designed to deflect light rays coupled in via the light coupling area 4a.

[0040] The deflection by the optical structures 9 is such that light deflected by the optical structures 9, after being deflected by the first deflecting element 7 towards the second section 6, illuminates the second deflecting elements 8 of the second section 6 essentially uniformly. This uniform illumination means that light exiting the output coupling area 4a of the second section 6 has an essentially constant light intensity per unit output coupling area across the entire output coupling area 4a.

[0041] The optical structures 9 are designed to deflect light rays in such a way that light rays reflected from the optical structures 9 have an angle w1 to the main emission direction x which is smaller than an angle w2 which would exist between the main emission direction x and light rays which would be reflected from a fictitious, smooth or flat, lateral surface 5a' which is free of optical structures 9.

[0042] The first lateral surface 5a of the first section 5 has a top surface and a bottom surface opposite the top surface, wherein the optical structures 9 can be arranged on the top surface and / or the bottom surface.

[0043] As in Fig. 6As shown, the optical structures 9 are designed as third deflection elements (in this example, a plurality of deflection prisms or step-shaped deflection structures arranged in a grid) which are arranged along a section of the lateral surface 5a along the main emission direction x. The third deflection elements are arranged at regular intervals or directly adjacent to one another on the lateral surface 5a. Each third deflection element comprises a deflection surface, in particular a planar one, for deflecting light, especially for total internal reflection. The deflection surfaces of the third deflection elements have a transverse extent orthogonal to the main emission direction x. Each deflection surface of a third deflection element is inclined to the main emission direction x, such that, in particular, a surface vector of a deflection surface has an acute or obtuse angle to the main emission direction x.

[0044] In the illustrated embodiment, the first section 5 is formed integrally with the second section 6. The first section 5 is connected to the second section 6 via a connecting section of the light guide body 3, wherein the connecting section includes the first deflecting element 7. The first section 5 and the second section 6 are designed as light-guiding, preferably transparent, solid bodies.

[0045] The first section 5 and the second section 6 are designed and oriented such that light propagates in the first section 5 along the main emission direction x, and after being deflected by the first deflecting element 7 in the second section 6, the light propagates along a deflection direction that forms an obtuse angle with the main emission direction x. This deflection direction is oriented along the second longitudinal dimension L2. The second section 6 is designed such that light coupled out of the light coupling area 4b of the second section 6 is again oriented parallel to the main emission direction x.

[0046] As in Fig. 5 As shown, a scattering element 10, preferably a scattering disc, is provided, which is arranged along the main radiation direction x according to the second section 6.

[0047] The scattering element 10 has a light-intake surface facing the light-out extraction area 4b of the second section 6 and a light-out emission surface facing away from the light-out extraction area 4b of the second section 6. The scattering element 10 is configured to receive light coupled out of the light-out extraction area 4b of the second section 6 via the light-intake surface and to emit it as scattered, preferably diffuse, light via the light-out emission surface.

[0048] Fig. 7 shows a top view of the first section 5, which is parallel to the first plane E1 (not shown; cf. Fig. 2a). In the example shown, five light sources 2 are shown (schematically represented by five rectangles), which are arranged next to each other in a row and couple light into the first section 5. The light rays are parallelized by five collimators (one collimator is assigned to each light source 2) in the plane E1, which in the example shown is a horizontal plane (ideally, all light rays are oriented perfectly parallel to each other; in Fig. 7Essentially, parallelized light rays are schematically represented by vertical, approximately parallel lines; since ideal or complete, perfect parallelism is impossible, the lines are not all exactly parallel (such inaccuracies are obvious to an expert). At the end of the first section 5, the horizontally parallelized light rays are deflected into the second section 6 by the first deflecting element 7. As the light rays traverse the first section 5, they are parallelized in a vertical direction by the optical structures 9, or rather, the angles of the light rays to the main emission direction x are reduced in a vertical plane along the first longitudinal extension L1. LIST OF REFERENCE MARKS

[0049] 1 Signal light or illumination device 2 Light source 3 Light guide 4a Light coupling area 4b Light coupling area 5 First section 5a First surface 5a' Fictitious surface 6 Second section 6a Second surface 7 First deflection element 8 Second deflection element 9 Optical structures E1 First plane E2 Second plane L1 First longitudinal extent L2 Second longitudinal extent R1 First direction R2 Second direction RS Rear VS Front X Main emission direction

Claims

1. A signal light or lighting device (1) for a motor vehicle or for a motor vehicle headlight, comprising: - at least one light source (2) for emitting light rays, - a light guide body (3) assigned to the at least one light source (2), wherein the light guide body (3) is configured to receive light from the at least one light source via a light coupling region (4a) of the light guide body (3), to guide it through the light guide body, and to couple it out at a light coupling region (4b) of the light guide body (3) along a main emission direction (x), wherein the light guide body (3) has a first section (5), a second section (6), and a first deflection element (7), wherein the first section (5) is configured as a first light guide channel, which is delimited by a first lateral surface (5a) and has a first longitudinal extent (L1), wherein the first section (5) is preferably configured such thatthat its first longitudinal extent (L1) runs along the main emission direction (x), wherein the light coupling region (4a) is formed at an end of the first section (5) facing the at least one light source (2), wherein the light coupling region (4a) is formed such, for example in the form of a collimator, that the light beams emitted by the at least one light source (2) are parallelized parallel to a first plane (E1) after coupling into the first section (5), and in particular are not parallelized along a second plane (E2), which is different from the first plane (E1), preferably orthogonal to the first plane (E1), and propagate along the main emission direction (x) through the first section, wherein the second section (6) is designed as a second light guide channel, which is delimited by a second lateral surface (6a) and has a second longitudinal extent (L2),wherein the second section (6) is oriented relative to the first section (5) such that its second longitudinal extent (L2) runs along a second direction (R2) which is oriented differently from the main emission direction (x), wherein the second lateral surface (6a) has a rear side (RS) and a front side (VS) opposite the rear side (RS), wherein the rear side (RS) has, at least in sections along the second longitudinal extent (L2), second deflection elements (8) which are designed to deflect light which propagates within the second section (6) and strikes the second deflection elements (8) in the direction of the front side (VS), wherein a section of the front side (VS), preferably opposite the second deflection elements (8), forms the light output region (4b), via which light deflected by the second deflection elements (8) from the second section (6) of the light-guiding body (3), for example as a signal lighting function,is coupled out, wherein the first deflection element (7) connects the first section (5) to the second section (6) in a light-conducting manner and is designed to deflect light coupled into the first section (5), after passing through the first section (5), into the second section (6), in particular by means of total reflection, so that deflected light propagates within the second section (6) along the second direction (R2), , characterized in thatthe first lateral surface (5a) of the first light guide channel has, at least in sections, optical structures (9) along the first longitudinal extent (L1) of the first section (5), which are designed to deflect light beams coupled in via the light coupling region (4a), wherein the deflection by the optical structures (9) is such that light deflected by the optical structures (9), after being deflected by the first deflecting element (7) in the direction of the second section (6), illuminates the second deflecting elements (8) of the second section (6) substantially uniformly such that light emerging from the coupling-out region (4a) of the second section (6) has a substantially constant light intensity per coupling-out area unit over the entire coupling-out region (4a).

2. Signal light or lighting device (1) according to claim 1, wherein the optical structures (9) are designed to deflect light beams in such a way that light beams reflected by the optical structures (9) have an angle (w1) to the main emission direction (x) which is smaller than an angle (w2) which would exist between the main emission direction (x) and light beams which would be reflected by a fictitious, smooth or flat, lateral surface (5a') which is free of optical structures (9).

3. Signal light or lighting device (1) according to one of the preceding claims, wherein the first section (5) is oriented to the second section (6) such that the first longitudinal extent (L1) of the first section (5) and the second longitudinal extent (L2) of the second section (6) enclose an obtuse angle, wherein in particular the angle is more than 90°, and preferably less than 160°, wherein the first deflection element (7) is preferably arranged at an end of the first section (5) facing away from the at least one light source (2).

4. Signal light or lighting device (1) according to one of the preceding claims, wherein the second deflection elements (8) are cylindrical, wherein their cylinder axes on the rear side (RS) extend orthogonally to the main emission direction (x), and in particular extend orthogonally to the second longitudinal extent (L2) or to the second direction (R2), wherein the cylindrical second deflection elements (8) are configured to deflect light which propagates within the second section (6) and strikes the cylindrical second deflection element (8) in the direction of the front side (VS), wherein preferably the cylindrical second deflection elements (8) and the light decoupling region (4b) are configured such that the deflected light beams are oriented parallel to the main emission direction (x) after being coupled out of the second section (6).

5. Signal light or lighting device (1) according to one of claims 1 to 3, wherein the second deflection elements (8) are designed as a plurality of deflection prisms which are arranged in a, preferably rectangular, grid on the rear side (RS), wherein each deflection prism has a deflection surface designed for light deflection, preferably by means of total reflection, and at least one side surface, in particular two side surfaces, wherein preferably the deflection prisms are designed such that the surface areas of the deflection surfaces increase along the second longitudinal extent (LS) and preferably the at least one side surface is parallel to the second longitudinal extent (L2) orto the second direction (R2), wherein preferably the deflection prisms are designed such that their deflection surfaces each have a specific angle of incidence to a virtual rear side plane which the rear side (RS) follows, wherein the rear side plane is oriented parallel to the second longitudinal extent (L2), wherein the angles of incidence increase along the second longitudinal extent (L2) such that light rays deflected by the deflection prisms, after their deflection at the deflection surfaces, are oriented parallel to one another along the entire second longitudinal extent (L2).

6. Signal light or lighting device (1) according to one of the preceding claims, wherein the first lateral surface (5a) of the first section (5) has an upper side and a lower side opposite the upper side, wherein the optical structures (9) are arranged on the upper side and / or the lower side.

7. Signal light or illumination device (1) according to one of the preceding claims, wherein the optical structures (9) are designed as third deflection elements, for example as a plurality of deflection prisms or step-shaped deflection structures, which are arranged along a section of the lateral surface (5a) along the main emission direction (x) and are preferably arranged at equal intervals or directly adjacent to one another on the lateral surface (5a), wherein preferably the third deflection elements each have a, in particular flat, deflection surface for deflecting, in particular for total reflection, light, wherein the deflection surfaces of the third deflection elements in particular have a transverse extension orthogonal to the main emission direction (x), wherein preferably each deflection surface of a third deflection element is inclined to the main emission direction (x).

8. Signal light or lighting device (1) according to one of the preceding claims, wherein the first section (5) and the second section (6) are each plate-shaped, wherein a length and a width of the first section (5) lie in the plane (E1) which is parallel to the main radiation direction (x), and a height of the first section (5) lies in the second plane (E2) which is oriented orthogonally to the plane (E1), wherein preferably the second section (6) extends along the second longitudinal extent (L2) starting from an end face of the plate-shaped first section (5) facing away from the light source (2).

9. Signal light or lighting device (1) according to one of the preceding claims, wherein the first deflection element (7) is designed to be totally reflective, in particular as a totally reflective mirror, and is adapted to deflect the light passed through the first section (5), preferably completely, into the second section (6).

10. Signal light or lighting device (1) according to one of the preceding claims, wherein the first section (5) is formed in one piece with the second section (6), wherein the first section (5) is connected to the second section (6) in a light-conducting manner via a connecting section of the light-conducting body (3), wherein the connecting section has the first deflection element (7), wherein preferably the first section (5) and the second section (6) are designed as a light-conducting, preferably transparent, solid body.

11. Signal light or lighting device (1) according to one of the preceding claims, wherein the first section (5) and the second section (6) are designed and oriented relative to one another such that light in the first section (5) propagates along the main emission direction (x), and light, after being deflected by the first deflecting element (7), propagates in the second section (6) along a deflection direction which forms an obtuse angle with the main emission direction (x), wherein the deflection direction is oriented along the second longitudinal extent (L2), wherein the second section (6) is designed such that light coupled out from the light coupling-out region (4b) of the second section (6) is oriented parallel to the main emission direction (x).

12. Signal light or lighting device (1) according to one of the preceding claims, wherein the main radiation direction (x) lies in a horizontal plane - in an installed position of the signal light or lighting device in a motor vehicle or in a motor vehicle headlight.

13. Signal light or lighting device (1) according to one of the preceding claims, comprising a plurality of light sources (2) arranged next to one another along a width which is oriented orthogonally to the main emission direction (x), wherein the light coupling region (4a) of the first section (5) has a plurality of collimators, wherein each collimator is assigned a light source (2).

14. Signal light or lighting device (1) according to one of the preceding claims, comprising a scattering element (10), preferably a scattering disc, which is arranged along the main emission direction (x) after the second section (6), wherein the scattering element (10) has a light entry surface facing the light output region (4b) of the second section (6) and a light exit surface facing away from the light output region (4b) of the second section (6), wherein the scattering element (10) is designed to receive light coupled out from the light output region (4b) of the second section (6) via the light entry surface and to emit it as scattered, preferably diffuse, light via the light exit surface.

15. Motor vehicle or motor vehicle headlight, comprising a signalling or lighting device according to one of the preceding claims.

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