Signal lamp or lighting device
By setting up an optical structure in the light guide channel of the signal lamp or lighting equipment, the light intensity loss and uneven output problems caused by the deflection of light between different sections are solved, and uniform propagation of light and constant light intensity output are achieved.
Patent Information
- Application Number
- CN202411394230.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-10-09
- Filing Date
- 2024-10-08
- Publication Date
- 2025-04-11
AI Technical Summary
In existing signal lamps or lighting equipment, when light deflects between different sections, it results in a loss of light intensity and an uneven coupling output.
By providing an optical structure on the side surface of the first light guide channel, the light beam coupled through the optical coupling input region is deflected to illuminate it evenly in the second section, ensuring that the light emitted from the coupling output region of the second section has a constant light intensity.
A uniform light propagation from the first section to the second section is achieved, reducing light intensity loss, and maintaining a constant light intensity throughout the coupling output region.
Smart Images
Figure CN119802497A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a signal lamp or lighting device for a motor vehicle or for a motor vehicle headlamp, comprising:
[0002] - at least one light source for emitting a light beam,
[0003] a 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-in region of the light guide, to guide it through the light guide and to couple it out at a light coupling-out region of the light guide in a main emission direction,
[0004] wherein the optical waveguide comprises a first section, a second section and a first deflection section,
[0005] wherein the first section is designed as a first light-conducting channel which is delimited by a first side surface and has a first longitudinal extension, wherein the first section is preferably designed such that its first longitudinal extension runs along a main emission direction, wherein a light coupling-in region is formed at an end of the first section facing the at least one light source, wherein the light coupling-in region is designed, for example, in the form of a collimator, such that a light beam emitted by the at least one light source is parallelized parallel to a first plane after coupling into the first section and is in particular deparallelized along a second plane which is different from the first plane and preferably orthogonal to the first plane and propagates through the first section along the main emission direction,
[0006] wherein the second section is formed as a second optical waveguide channel, which is delimited by a second side surface and has a second longitudinal extension, wherein the second section is oriented relative to the first section in such a way that its second longitudinal extension runs along a second direction oriented differently from the main emission direction, wherein the second side surface has a rear side and a front side opposite the rear side, wherein the rear side has a second deflection element at least in sections along the second longitudinal extension, the second deflection element being configured to deflect light propagating within the second section and impinging on the second deflection element toward the front side, wherein a section of the front side, preferably opposite the second deflection element, forms a light coupling-out region, via which the light deflected by the second deflection element is coupled out of the second section of the optical waveguide, for example as a signal light function,
[0007] The first deflection element connects the first section to the second section in a light-conducting manner and is configured to deflect light coupled into the first section into the second section after passing through the first section, in particular by means of total reflection, so that the deflected light propagates within the second section along a second direction.
[0008] The invention also relates to a motor vehicle or a motor vehicle headlight comprising a signal light or a lighting device. Background Art
[0009] In the prior art, signal lights or lighting devices (hereinafter referred to as devices) are known which consist of a plurality of (optically active) segments. For example, due to the predetermined installation position of the optically active components of the device, it is usually necessary to arrange the different segments in a specific geometry relative to each other, which in turn requires multiple light deflections within the device in order to achieve a specific light propagation path between the light coupling-in region and the light coupling-out region within the device. When the light is deflected from one segment to the next, however, the disadvantage is that the light intensity is "lost" or cannot be uniformly guided from one segment to the next. As a result, an inhomogeneously luminous coupling-out surface usually appears in the last segment from which the light is emitted as a light function. Summary of the invention
[0010] The object of the present invention is to reduce or eliminate the disadvantages of the prior art. The object of the present invention is therefore, in particular, to provide a signal light or lighting device in which the homogeneity of the light emitted by the signal light or lighting device is increased.
[0011] Said object is achieved by a signal lamp or lighting device having the features of the invention.Preferred embodiments are given herein.
[0012] According to the invention, the first side surface of the first light-conducting channel has an optical structure at least in sections along the first longitudinal extension of the first section, wherein the optical structure is configured to deflect the light beam coupled in via the light coupling-in region.
[0013] The optical structure is used for deflection so that the light deflected by the optical structure after being deflected by the first deflection element toward the second section illuminates the deflection element of the second section substantially uniformly, so that the light emitted from the coupling-out region of the second section has a substantially constant light intensity per unit coupling-out area over the entire coupling-out region.
[0014] This results in the following advantage: the light deflected from the first section into the second section is uniformly emitted from the second section or uniformly at each coupling-out surface. Thus, the light coupling-out region of the optical waveguide can be considered as a uniformly illuminated surface. By means of the optical structure, the light can be more parallel along the light emission direction within the first section compared to when there is no optical structure. For example, when the light beam is totally reflected at the optical structure multiple times along the first section, the angle between the light beam and the optical axis can be further reduced at each reflection, whereby the light beam is increasingly adapted to the main emission direction or is more parallelized toward the main emission direction along the first longitudinal extension of the first section.
[0015] It can be provided that the optical structure is configured to deflect the light beam such that the angle of the light beam reflected by the optical structure relative to the main emission direction is smaller than the angle existing between the main emission direction and the light beam reflected by a virtual, smooth or flat side surface without the optical structure. In other words, the light beam is "more parallel" to the main emission direction after its deflection or total reflection by the optical structure than before it was deflected by the optical structure.
[0016] It can be proposed that the first section is oriented relative to the second section so that a first longitudinal extension of the first section and a second longitudinal extension of the second section form an obtuse angle, wherein in particular the angle is greater than 90° and preferably less than 160°, wherein preferably a first deflection element is arranged at the end of the first section facing away from at least one light source.
[0017] It can be proposed that the second deflection element is cylindrically configured, wherein its cylindrical axis extends at the rear side orthogonally to the main radiation direction and in particular orthogonally to the second longitudinal extension or the second direction, wherein the cylindrical second deflection element is configured to deflect light propagating within the second section and impinging on the cylindrical second deflection element toward the front side, wherein preferably, the cylindrical second deflection element and the light coupling-out region are configured such that the deflected light beam is oriented parallel to the main radiation direction after being coupled out from the second section.
[0018] It can be provided that the second deflection element is designed as a plurality of deflection prisms, which are arranged at the rear side in a preferably rectangular grid, wherein each deflection prism has a deflection surface designed to deflect light preferably by means of total reflection and at least one side surface, in particular two side surfaces, wherein the deflection prism is preferably designed so that the area of the deflection surface increases along the second longitudinal extension, and preferably at least one side surface is oriented parallel to the second longitudinal extension or the second direction, wherein preferably the deflection prism is designed so that its deflection surface each has a specific adjustment angle relative to a virtual rear side plane, the rear side follows the rear side, wherein the rear side plane is oriented parallel to the second longitudinal extension, wherein the adjustment angle increases along the second longitudinal extension, so that the light beams deflected by the deflection prisms are oriented parallel to each other along the entire second longitudinal extension after their deflection at the deflection surface. In particular, the light beams propagating within the second section can strike the rear side (or at the deflection surface) at different angles relative to the second longitudinal extension or relative to the rear side plane. By means of the deflection prism's adjustment angle described here, which increases along the second longitudinal extension, the light beams deflected by the deflection prism and coupled out of the second section can be oriented parallel to one another and in particular parallel to the main emission direction. In addition, by means of the deflection surface's area, which increases along the second longitudinal extension, a uniform light flux or a constant light intensity can be emitted over the entire light coupling-out region (or light coupling-out surface) of the second section.
[0019] It may be provided that the first side surface of the first section has an upper side and an underside opposite the upper side, wherein the optical structure is arranged on the upper side and / or on the underside.
[0020] It can be proposed that the optical structure is configured as a third deflection element, for example as a plurality of deflection prisms or a stepped deflection structure, which are arranged along a section of the side surface along the main radiation direction and are preferably arranged at uniform intervals or directly adjacent to each other on the side surface, wherein preferably, the third deflection elements each have a particularly flat deflection surface for deflecting light, in particular total reflection, wherein the deflection surface of the third deflection element in particular has a lateral extension orthogonal to the main radiation direction, wherein preferably, each deflection surface of the third deflection element is inclined relative to the main radiation direction.
[0021] It may be provided that the second section is oriented relative to the first section such that the rear side faces the second side surface of the at least one light source and the front side faces away from the second side surface of the at least one light source.
[0022] It can be proposed that the first section and the second section are each formed in a plate-like manner, wherein the length and width of the first section are in a plane parallel to the main emission direction, and the height of the first section is in a second plane oriented orthogonally to the plane, wherein preferably, the second section extends along a second longitudinal extension starting from the end side of the plate-like first section facing away from the light source.
[0023] It can be provided that the first deflection element is designed to be totally reflective, in particular as a total reflection mirror, and is provided to deflect light incident through the first section, preferably completely, into the second section.
[0024] 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 in a light-conducting manner via a connecting section of the optical waveguide, wherein the connecting section has the first deflection element.
[0025] It may be provided that the first section and the second section are designed as light-conducting, preferably transparent, solid bodies.
[0026] It can be proposed that the first section and the second section are constructed and oriented relative to each other such that light propagates along a main emission direction in the first section and, after being deflected by the first deflection element, propagates in the second section along a deflection direction, which deflection direction encloses an obtuse angle with the main emission direction, wherein the deflection direction is oriented along a second longitudinal extension, wherein the second section is constructed such that light coupled out from a light coupling-out region of the second section is oriented parallel to the main emission direction.
[0027] It can be provided that the main emission direction lies in a horizontal plane—in the installed position of the signal light or the lighting device in the motor vehicle or the motor vehicle headlight.
[0028] It can be provided that the signal light or lighting device has a plurality of light sources arranged alongside one another along a width oriented orthogonally to the main emission direction, wherein the light coupling-in region of the first section has a plurality of collimators, wherein a light source is associated with each collimator.
[0029] It can be proposed that the signal light or lighting device includes a scattering element 10, preferably a scattering disk, which is arranged after the second section along the main radiation direction, wherein the scattering element has a light incident surface facing the light coupling-out region of the second section and a light exit surface facing away from the light coupling-out region of the second section, wherein the scattering element is configured to receive light coupled out from the light coupling-out region of the second section via the light incident surface and radiate it as scattered, preferably diffuse light via the light exit surface.
[0030] It can be provided that the first plane is orthogonal to the second plane, wherein the first plane and the second plane are each oriented parallel to the main emission direction. It can be provided that—in the installed position of the signal light or lighting device in the motor vehicle or motor vehicle headlight—the first plane is a horizontal plane and the second plane is a vertical plane, wherein in particular the main emission direction can be parallel to the intersection of the horizontal plane and the vertical plane.
[0031] According to a second aspect of the present invention, a motor vehicle or a motor vehicle headlight is provided, which comprises a signal light or a lighting device. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The present invention is further described below according to preferred embodiments, but the present invention should not be limited to the embodiments. Shown in the (schematic) figure:
[0033] Figure 1 A perspective view showing one embodiment of a signal lamp or lighting device according to the present invention;
[0034] Figure 2 Show according to Figure 1 A three-dimensional rear view of the device;
[0035] Figure 2a A schematic diagram showing two planes;
[0036] Figure 3 Show according to Figure 1 A side view of the device;
[0037] Figure 4 Show Figure 3 Detailed picture of
[0038] Figure 5 Show according to Figure 1 Another perspective view of the device;
[0039] Figure 6 A detailed view showing the first section, and
[0040] Figure 7 A plan view of the first section is shown.
[0041] In the context of this description, the terms “upper”, “lower”, “horizontal” and “vertical” are to be understood as indicating a direction when the signal light or lighting device is arranged in a normal state of use after it has been installed in a motor vehicle headlamp or in a motor vehicle. DETAILED DESCRIPTION
[0042] Figure 1 , Figure 2 and Figure 3 The illustration shows a signal light or lighting device 1 (referred to below as “device”) for a motor vehicle or for a motor vehicle headlight.
[0043] The device 1 comprises at least one light source 2 for emitting a light beam.
[0044] The device 1 further comprises an optical waveguide 3 associated with at least one light source 2. The optical waveguide 3 is configured to receive light of the at least one light source via a light coupling-in region 4a of the optical waveguide 3, to conduct it through the optical waveguide and to couple it out along a main emission direction x at a light coupling-out region 4b of the optical waveguide 3. The optical waveguide 3 comprises a first section 5, a second section 6 and a first deflection element 7.
[0045] In the exemplary embodiment shown, the main emission direction x lies in a horizontal plane (in the installed position of the signal light or lighting device in the motor vehicle or in the motor vehicle headlight).
[0046] The first section 5 is designed as a first light-conducting channel and has a first longitudinal extension L1, which is limited by a first side surface 5a. In the illustrated embodiment, the first section 5 is designed so that its first longitudinal extension L1 extends along the main radiation direction x. The light coupling-in region 4a is formed at the end of the first section 5 facing the at least one light source 2. The light coupling-in region 4a is designed, for example, in the form of a collimator so that the light beam emitted by the at least one light source 2 is parallelized parallel to the first plane E1 after coupling into the first section 5, and in particular is not parallelized along a second plane E2 different from the first plane E1, preferably orthogonal to the first plane E1, and propagates through the first section along the main radiation direction x.
[0047] Figure 2a The orientation of the planes E1 and E2 relative to one another is shown: The first plane E1 is orthogonal to the second plane E2, wherein the first plane E1 and the second plane E2 are each oriented parallel to the main emission direction x.
[0048] The second section 6 is also configured as a second optical waveguide channel, which is bounded by a second side surface 6a and has a second longitudinal extension L2. The second section 6 is oriented relative to the first section 5 so that its second longitudinal extension L2 extends along a second direction R2 oriented differently from the main radiation direction x. The second side surface 6a has a rear side RS and a front side VS opposite to the rear side RS. The rear side RS has a second deflection element 8 at least in sections along the second longitudinal extension L2. The second deflection element is configured to deflect the light propagating within the second section 6 and impinging on the second deflection element 8 toward the front side VS. The section of the front side VS opposite to the second deflection element 8 in the illustrated embodiment constitutes a light coupling-out region 4b, via which the light deflected by the second deflection element 8 is coupled out from the second section 6 of the optical waveguide 3, for example as a signal light function.
[0049] The first deflection element 7 connects the first section 5 to the second section 6 in a light-conducting manner and is configured to deflect the light coupled into the first section 5 into the second section 6 after it has passed through the first section 5, in particular by means of total reflection, so that the deflected light propagates within the second section 6 along the second direction R. In the illustrated embodiment, the first deflection element 7 is arranged at the end of the first section 5 facing away from the at least one light source 2. The first deflection element 7 can be designed as a total reflection mirror.
[0050] In the embodiment shown, the first section 5 is oriented relative to the second section 6 such that a first longitudinal extension L1 of the first section 5 and a second longitudinal extension L2 of the second section 6 enclose an obtuse angle greater than 90° and preferably less than 160°.
[0051] In the illustrated embodiment, the second deflection element 8 is configured as a plurality of deflection prisms, which are arranged at the rear side RS in a preferably rectangular grid form. Each deflection prism includes a deflection surface and at least one side, in particular two side surfaces, configured for deflecting light preferably by means of total reflection. The deflection prism is configured so that the area of the deflection surface increases along the second longitudinal extension and its side surface is parallel to the second longitudinal extension L2 or the second direction R2. The deflection prism is also configured so that its deflection surface has a specific adjustment angle relative to the virtual rear side plane, and the rear side RS follows the rear side plane. The (virtual) rear side plane is oriented substantially parallel to the second longitudinal extension L2. The adjustment angle increases along the second longitudinal extension L2, so that the light beams deflected by the deflection prism are oriented parallel to each other along the entire second longitudinal extension L2 after being deflected at the deflection surface. By increasing the deflection surface and the adjustment angle along the second longitudinal extension L2, it is possible to achieve a particularly uniform light coupling-out from the second section 6.
[0052] As in Figure 4It can be seen that the second section 6 is oriented relative to the first section 5 such that the rear side RS faces the second side surface 6a of the at least one light source 2 and the front side VS faces away from the second side surface 6a of the at least one light source.
[0053] As in Figure 5 It can be seen that the first section 5 and the second section 6 are each plate-shaped. The length and width of the first section 5 are in a plane E1. The plane E1 is parallel to the main emission direction x. The height of the first section 5 is in a second plane E2, which is oriented orthogonally to the plane E1. The second section 6, starting from the end side of the plate-shaped first section 5 facing away from the light source 2, extends along a second longitudinal extension L2.
[0054] As in Figure 3 and Figure 4 It can be seen that the first side surface 5a of the first light-conducting channel has an optical structure 9 at least in sections along the first longitudinal extension L1 of the first section 5. The optical structure is configured to deflect a light beam coupled in via the light coupling-in region 4a.
[0055] The optical structure 9 is deflected in such a way that the light deflected by the optical structure 9 illuminates the second deflection element 8 of the second section 6 substantially uniformly after it has been deflected from the first deflection element 7 toward the second section 6. The uniform illumination means that the light emerging from the coupling-out region 4a of the second section 6 has a substantially constant light intensity per unit coupling-out area over the entire coupling-out region 4a.
[0056] The optical structure 9 is configured to deflect the light beams such that the light beams reflected by the optical structure 9 have an angle w1 with respect to the main emission direction x which is smaller than an angle w2 between the main emission direction x and the light beams reflected by an imaginary, smooth or planar side surface 5 a ′ without the optical structure 9 .
[0057] The first side surface 5 a of the first section 5 has an upper side and an underside opposite the upper side, wherein the optical structure 9 can be arranged on the upper side and / or on the underside.
[0058] As in Figure 6As shown in the figure, the optical structure 9 is configured as a third deflection element (in the example, a plurality of deflection prisms arranged in a grid form or a stepped deflection structure), which is arranged along a section of the side surface 5a along the main radiation direction x. The third deflection elements are arranged at the side surface 5a at uniform intervals or directly adjacent to each other. The third deflection elements each include a particularly flat deflection surface for deflecting light, in particular total reflection. The deflection surface of the third deflection element has a lateral extension orthogonal to the main radiation direction x. Each deflection surface of the third deflection element is inclined relative to the main radiation direction x, so that the surface vector of the deflection surface has an acute angle or an obtuse angle relative to the main radiation direction x.
[0059] In the exemplary embodiment shown, the first section 5 is formed integrally with the second section 6. The first section 5 is connected to the second section 6 in a light-conducting manner via a connecting section of the optical waveguide 3, wherein the connecting section has a first deflection element 7. The first section 5 and the second section 6 are formed as light-conducting, preferably transparent, solid bodies.
[0060] The first section 5 and the second section 6 are designed and oriented relative to each other such that the light propagates in the first section 5 along the main emission direction x and, after being deflected by the first deflection element 7, propagates in the second section 6 along a deflection direction which encloses an obtuse angle with the main emission direction x. The deflection direction is oriented along the second longitudinal extension L2. The second section 6 is designed such that the light coupled out from the light coupling-out region 4b of the second section 6 is again oriented parallel to the main emission direction x.
[0061] As in Figure 5 As shown in FIG. 1 , a scattering element 10 , preferably a scattering disk, is provided, which is arranged downstream of the second section 6 along the main emission direction x.
[0062] The scattering element 10 has a light incident surface facing the light coupling-out region 4b of the second section 6 and a light exit surface facing away from the light coupling-out region 4b of the second section 6. The scattering element 10 is configured to receive the light coupled out from the light coupling-out region 4b of the second section 6 via the light incident surface and emit it as scattered, preferably diffuse light via the light exit surface.
[0063] Figure 7 A top view of the first section 5 is shown, which is parallel to the first plane E1 (not shown; see Figure 2a ). In the example shown, five light sources 2 are shown (schematically indicated by five rectangles), which are arranged side by side in a row and couple light into the first section 5. The light beams are parallelized by five collimators (one collimator is associated with each light source 2) in a plane E1 which is a horizontal plane in the example shown (ideally all light beams are oriented completely parallel to one another; in Figure 7, the substantially parallelized light beams are schematically indicated by vertical, almost parallel lines; since an ideal or completely perfect parallelization cannot occur, the lines are not all exactly parallel; this inaccuracy is clear to a person skilled in the art). The horizontally parallelized light beams are deflected by the first deflection element 7 at the end of the first section 5 into the second section 6. During the passage of the light beam through the first section 5, the light beam is parallelized in the vertical direction by the optical structure 9 or the angle of the light beam relative to the main emission direction x is reduced in the vertical plane along the first longitudinal extension L1.
[0064] List of reference numerals:
[0065] 1 Signal lights or lighting equipment
[0066] 2 Light Source
[0067] 3 Light conductor
[0068] 4a Optical coupling input area
[0069] 4b Optical coupling output region
[0070] 5. Part 1
[0071] 5a First side surface
[0072] 5a' Virtual side surface
[0073] 6 Part 2
[0074] 6a Second side surface
[0075] 7 First deflection element
[0076] 8 Second deflection element
[0077] 9 Optical structure
[0078] E1 First plane
[0079] E2 Second Plane
[0080] L1 First longitudinal extension
[0081] L2 Second longitudinal extension
[0082] R1 First direction
[0083] R2 Second direction
[0084] RS rear
[0085] VS front
[0086] X main radiation direction
Claims
1. A signal lamp or lighting device (1) for a motor vehicle or for a motor vehicle headlamp, comprising: - at least one light source (2) for emitting a light beam, - an optical waveguide (3) associated with the at least one light source (2), wherein the optical waveguide (3) is configured to receive light from the at least one light source via a light coupling-in region (4a) of the optical waveguide (3), to guide the light through the optical waveguide, and to couple the light out at a light coupling-out region (4b) of the optical waveguide (3) along a main emission direction (x), The optical waveguide (3) comprises a first section (5), a second section (6) and a first deflection element (7). wherein the first section (5) is designed as a first light-conducting channel, which is bounded by a first side surface (5a) and has a first longitudinal extension (L1), wherein the first section (5) is preferably designed such that its first longitudinal extension (L1) extends along the main emission direction (x), wherein the light coupling-in region (4a) is formed at the end of the first section (5) facing the at least one light source (2), wherein the light coupling-in region (4a) is designed, for example, in the form of a collimator, such that a light beam emitted by the at least one light source (2) is parallelized parallel to a first plane (E1) after being coupled into the first section (5) and is in particular not parallelized along a second plane (E2) different from the first plane (E1) and preferably orthogonal to the first plane (E1), and propagates through the first section along the main emission direction (x), wherein the second section (6) is designed as a second light-conducting channel which is delimited by a second side surface (6a) and has a second longitudinal extension (L2), wherein the second section (6) is oriented relative to the first section (5) such that its second longitudinal extension (L2) runs along a second direction (R2) oriented differently from the main emission direction (x), wherein the second side surface (6a) has a rear side (RS) and a front side (VS) lying opposite the rear side (RS), wherein the rear side (RS) extends along the second longitudinal extension ( L2) at least partially comprises a second deflection element (8), which is configured to deflect light propagating within the second section (6) and impinging on the second deflection element (8) towards the front side (VS), wherein a section of the front side (VS) which is preferably opposite the second deflection element (8) forms the light coupling-out region (4b), via which the light deflected by the second deflection element (8) is coupled out from the second section (6) of the optical waveguide (3), for example as a signal light function, wherein the first deflection element (7) connects the first section (5) and the second section (6) in a light-conducting manner and is configured to deflect the light coupled into the first section (5) into the second section (6) after passing through the first section (5), in particular by means of total reflection, so that the deflected light propagates within the second section (6) along the second direction (R2), It is characterized in that The first side surface (5a) of the first light-conducting channel has an optical structure (9) at least in sections along the first longitudinal extension (L1) of the first section (5), the optical structure being configured to deflect a light beam coupled in via the light coupling-in region (4a), The optical structure (9) is deflected such that the light deflected by the optical structure (9) after being deflected by the first deflection element (7) toward the second section (6) illuminates the second deflection element (8) of the second section (6) substantially uniformly, so that the light emitted from the coupling-out region (4a) of the second section (6) has a substantially constant light intensity per unit coupling-out area over the entire coupling-out region (4a).
2. A signal light or lighting device (1) according to claim 1, The optical structure (9) is configured to deflect the light beam so that the angle (w1) of the light beam reflected by the optical structure (9) relative to the main emission direction (x) is smaller than the angle (w2) existing between the main emission direction (x) and the light beam reflected by a virtual, smooth or flat side surface (5a') without the optical structure (9).
3. A signal light or lighting device (1) according to any one of the preceding claims, The first segment (5) is oriented relative to the second segment (6) such that the first longitudinal extension (L1) of the first segment (5) and the second longitudinal extension (L2) of the second segment (6) enclose an obtuse angle, wherein in particular the angle is greater than 90° and preferably less than 160°, wherein the first deflection element (7) is preferably arranged at the end of the first segment (5) facing away from the at least one light source (2).
4. A signal light or lighting device (1) according to any one of the preceding claims The second deflection element (8) is cylindrically configured, wherein its cylindrical axis extends at the rear side (RS) orthogonally to the main emission direction (x) and in particular orthogonally to the second longitudinal extension (L2) or the second direction (R2), wherein the second cylindrical deflection element (8) is configured to deflect light propagating within the second section (6) and impinging on the second cylindrical deflection element (8) toward the front side (VS), wherein preferably, the second cylindrical deflection element (8) and the light coupling-out region (4b) are configured such that the deflected light beam is oriented parallel to the main emission direction (x) after being coupled out from the second section (6).
5. A signal lamp or lighting device (1) according to any one of claims 1 to 3, The second deflection element (8) is configured as a plurality of deflection prisms, which are arranged at the rear side (RS) in a preferably rectangular grid form, wherein each deflection prism has a deflection surface configured for deflecting light preferably by means of total reflection and at least one side surface, in particular two side surfaces, wherein preferably, the deflection prism is configured so that the area of the deflection surface increases along the second longitudinal extension (LS), and preferably, the at least one side surface is oriented parallel to the second longitudinal extension (L2) or the second direction (R2), wherein preferably, the deflection prism is configured so that its deflection surface has a specific adjustment angle relative to a virtual rear side plane, the rear side (RS) follows the rear side plane, wherein the rear side plane is oriented parallel to the second longitudinal extension (L2), wherein the adjustment angle increases along the second longitudinal extension (L2) so that the light beams deflected by the deflection prism are oriented parallel to each other along the entire second longitudinal extension (L2) after they are deflected at the deflection surface.
6. A signal light or lighting device (1) according to any one of the preceding claims, The first side surface (5a) of the first section (5) has an upper side and a lower side opposite the upper side, wherein the optical structure (9) is arranged on the upper side and / or the lower side.
7. A signal light or lighting device (1) according to any one of the preceding claims, The optical structure (9) is configured as a third deflection element, for example as a plurality of deflection prisms or a stepped deflection structure, the third deflection element being arranged along a section of the side surface (5a) along the main emission direction (x) and preferably being arranged at uniform intervals or directly adjacent to each other on the side surface (5a), wherein preferably, the third deflection elements each have a particularly flat deflection surface for deflecting light, in particular for total reflection, wherein the deflection surface of the third deflection element in particular has a lateral extension orthogonal to the main emission direction (x), wherein preferably, each deflection surface of the third deflection element is inclined relative to the main emission direction (x).
8. A signal light or lighting device (1) according to any one of the preceding claims, The first section (5) and the second section (6) are respectively formed in a plate-like manner, wherein the length and width of the first section (5) are in a plane (E1) parallel to the main emission direction (x), and the height of the first section (5) is in a second plane (E2) oriented orthogonal to the plane (E1), wherein preferably, the second section (6) starts from the end side of the plate-like first section (5) facing away from the light source (2) and extends along the second longitudinal extension (L2).
9. A signal light or lighting device (1) according to any one of the preceding claims, The first deflection element (7) is designed to be totally reflective, in particular as a total reflection mirror, and is provided to deflect light incident through the first section (5), preferably completely, into the second section (6).
10. A signal light or lighting device (1) according to any one of the preceding claims, The first section (5) and the second section (6) are designed as a single piece, the first section (5) and the second section (6) are connected in a light-conducting manner via a connecting section of the optical waveguide (3), the connecting section having the first deflection element (7), the first section (5) and the second section (6) preferably being designed as light-conducting, preferably transparent, solid bodies.
11. A signal light or lighting device (1) according to any one of the preceding claims, The first section (5) and the second section (6) are designed and oriented relative to each other such that light propagates in the first section (5) along the main emission direction (x), and after being deflected by the first deflection element (7), the light propagates in the second section (6) along a deflection direction which encloses an obtuse angle with the main emission direction (x), wherein the deflection direction is oriented along the second longitudinal extension (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. A signal light or lighting device (1) according to any one of the preceding claims, The main emission direction (x) lies in a horizontal plane in the installed position of the signal light or lighting device in the motor vehicle or motor vehicle headlight.
13. A signal light or lighting device (1) according to any one of the preceding claims, The signal light or lighting device comprises a plurality of light sources (2) arranged next to one another along a width oriented orthogonally to the main emission direction (x), wherein the light coupling-in region (4a) of the first section (5) has a plurality of collimators, wherein a light source (2) is associated with each collimator.
14. A signal light or lighting device (1) according to any one of the preceding claims, The signal light or lighting device comprises a scattering element (10), preferably a scattering disk, which is arranged behind the second section (6) along the main emission direction (x), wherein the scattering element (10) has a light incident surface facing the light coupling-out region (4b) of the second section (6) and a light exit surface facing away from the light coupling-out region (4b) of the second section (6), wherein the scattering element (10) is configured to receive light coupled out from the light coupling-out region (4b) of the second section (6) via the light incident surface and emit it as scattered, preferably diffuse light via the light exit surface.
15. A motor vehicle or a motor vehicle headlamp comprising a signal lamp or a lighting device according to any one of the preceding claims.