Lighting device for a motor vehicle

Abstract

The invention relates to a lighting device (1) for a motor vehicle (30), wherein the lighting device (1) has a printed circuit board (10) with a plurality of light emitting diodes (11) arranged on the printed circuit board, an optical sheet (8) and a reflective element (9), wherein the reflective element (9) is arranged between the printed circuit board (10) and the optical sheet (8), wherein the reflective element (9) has a plurality of segments (6), the reflective element (9) being divided into the plurality of segments, wherein each light emitting diode (11) is assigned to one segment (6) such that light emitted from the light emitting diode (11) is reflected on the reflective element (9) and passes through the optical sheet (8).

Description

Technical Field

[0001] This invention relates to a lighting device for a motor vehicle, a lighting system, and a motor vehicle. Background Technology

[0002] The implementation of pixelated or segmented functional surfaces in lamps or lighting devices on motor vehicles allows for the definition and delivery of desired lighting signatures or the display of additional information content (e.g., numbers, text, pictographs) through separate switching of each segment / pixel. Therefore, new content or light signatures can be developed and provided to the owner / driver throughout the vehicle's lifespan without the need to develop new lamps separately.

[0003] A corresponding lighting device is known from DE 10 2016 119 326 A1.

[0004] LED displays with RGB-LED matrix arrangements are known in general existing technology, primarily from advertising or as video walls at exhibitions and concerts. RGB-LEDs have very weak luminous flux, therefore, in the automotive field, these LED displays cannot achieve the legally required luminous intensity with a correspondingly limited number of LEDs. Furthermore, the operation of such LED displays is via video interfaces, such as HDMI, which are not used in automobiles because such video signals are unsuitable for controlling lights and functions. Another disadvantage of these LED panels is the pixelated arrangement of the LEDs in the matrix. The observer sees a bright spot at each LED location, and a clear image is only visible from close viewing distances due to very narrow spacing and correspondingly high resolution. Therefore, in such LED panels, the distance between adjacent LEDs is currently set to less than 2 mm, or ideally 1 mm or less.

[0005] To generate the legally required minimum luminous intensity of 4 cd for red taillights, 50 cd (ECE) or 130 cd (SAE) for yellow turn signals, and 60 cd (ECE) or 80 cd (SAE) for red brake lights in automotive applications, LEDs with high operating current and light flow conforming to automotive specifications are used, along with an optical system that optimally utilizes the light flow of the LEDs. This enables the generation of brake lights or turn signals even with a small number of pixels / segments, and allows for the development and permission of correspondingly different light signatures by means of the segmented matrix display surface. Summary of the Invention

[0006] The objective of this invention is to provide an improved lighting device compared to the prior art, and in particular, to offer a high degree of freedom in designing displays of light signatures while maintaining a cost-effective and compact structural design.

[0007] The aforementioned tasks are solved by the technical solutions according to the present invention. These tasks are particularly solved by the lighting device according to the present invention, the lighting system according to the present invention, and the motor vehicle according to the present invention. Further advantages and details of the present invention will become apparent from the description and drawings. Herein, the features and details disclosed in connection with the lighting device according to the present invention also apply to the lighting system according to the present invention and the motor vehicle according to the present invention, and vice versa, so that the disclosures regarding various aspects of the invention are always referred to or can be referred to mutually.

[0008] According to a first aspect of the invention, the aforementioned task is solved by an illumination device for a motor vehicle, wherein the illumination device is configured, particularly for displaying optical signatures or for displaying optical signatures. The illumination device has a printed circuit board, an optical sheet, and a reflective element, the printed circuit board having a plurality of light-emitting diodes (LEDs) arranged on the printed circuit board. The reflective element is arranged between the printed circuit board and the optical sheet. The reflective element (and optionally the optical sheet) has a plurality of segments, the reflective element (and optionally the optical sheet) being divided into these segments, wherein one segment is provided for each LED, such that light emitted from the LED is reflected on one hand at the segment of the reflective element and on the other hand passes through the optical sheet (particularly the segment). Here, these segments have a triangular or substantially triangular shape.

[0009] In particular, the optical components of the optical sheet segments can be deeply embedded in the reflector segments to produce uniformity of light guidance and illumination that are coordinated with each other, as well as a flat structure.

[0010] Therefore, according to the present invention, it is proposed to use (basic) triangular segments that reflect light from the light-emitting diode, instead of using rectangular segments, for example, those known from the prior art. It has been shown that the construction of reflective elements with triangular segments presents an advantageous arrangement in lighting devices, allowing for the very precise display of different light signatures with a relatively small number of segments.

[0011] The triangular shape specifically refers to the cross-section of the segment or the shape visible on the reflective element in a top view of the segment. Correspondingly, an area on the optics that displays the corresponding shape of the segment, i.e., the triangular light shape, can be illuminated. Thus, by illuminating the triangular segment with an illumination device, many different light signatures, especially relevant to traffic and other situations, can be displayed. In the case of the triangular segment, a particularly high degree of freedom in manipulating different light signatures can be achieved.

[0012] Here, a triangle basically includes shapes that can be approximated as triangles, even if the shapes are not mathematically precise. For example, a triangle with rounded corners is also understood to be essentially a triangle.

[0013] Because the segments are triangularly constructed, each segment has three reflective surfaces or walls that are interconnected on their sides. At its center, each segment may have two openings. One opening is near the light-emitting diode (LED) disposed within the segment, allowing light from the LED to enter. The other opening is near or away from the optical plate, allowing light reflected from the reflective surface of the segment to exit onto the optical plate. The opening near the LED is particularly smaller than the opening near the optical plate. Accordingly, segments that taper or converge along the direction from the optical plate to the LED can be provided. Therefore, the segment can also be described in terms of its body or volume as a funnel or pyramid shape with corresponding openings at the upper and lower parts of a pyramidal shape.

[0014] The fact that the lighting device is constructed for use in motor vehicles specifically means that the lighting device is suitable for use in motor vehicles. However, other applications of the lighting device according to the invention are also conceivable and possible. However, the application in motor vehicles is particularly preferred. Therefore, the lighting device is particularly suitable for use in motor vehicles. For example, the lighting device may be a taillight, auxiliary light, headlight, or the like.

[0015] Multiple segments can be combined into row-by-row and column-by-column repeating configurations on the reflective element. These repeating configurations of segments, with their individual shapes, allow for a particularly diverse range of designs and displays of different optical signatures.

[0016] In particular, these configuration components can each have a rectangular, especially square, shape. Here, every four triangular segments can be combined to form a rectangular shape. Correspondingly, the light-emitting diodes (LEDs) can also be arranged on a printed circuit board. Thus, the printed circuit board can have a repeating pattern of configuration components of four LEDs each. This configuration component can, for example, be described as a positive- or positive-position configuration component, wherein each set of four LEDs can be interconnected by two imaginary lines, which connect and intersect each pair of LEDs horizontally and vertically.

[0017] Alternatively, each LED can be configured with a segment, such that light emitted from each LED is reflected by a reflective element (or, in other words, by each segment of the reflective element) and passes through an optical sheet within the region of the segment assigned to that LED. The segments and LEDs can be arranged in a corresponding, opposite-to-each configuration. Thus, each segment of the reflective element can completely surround or encapsulate an LED on the printed circuit board. This causes the light from the corresponding LED to be reflected by the reflective element within the region of the corresponding segment.

[0018] Each segment of the reflective element can be provided with a concave lens, which can be arranged between the reflective element and the optical sheet. In particular, the lens can be arranged, especially constructed on the optical sheet, particularly on the inner side of the optical sheet or on the side opposite the reflective element. This arrangement specifically means that each lens is opposite to a segment. The lens can be integrally constructed with the optical sheet. These lenses can have the same segmentation as the reflective element. Furthermore, it is possible that the lens has a triangular or substantially triangular shape to correspond to the segment. The concave central surface of the lens can have a greater distance (a few millimeters) from the light-emitting diodes (LEDs) respectively arranged in the segment. Due to its shape, especially as a pyramidal optical device, the lens has a greater wall thickness in its outer region compared to its counterpart. This is beneficial for uniform illumination without emphasizing the intensity of the axial LEDs (especially in the case of so-called top LEDs) and thus allows for illumination of the segment or the area of ​​the optical sheet in front of the segment without hot spots. The optical sheet also incorporates a light-guiding effect and includes an additional light-guiding device in the cooperation of the prism surface of the lens and the reflective surface around the section of the reflective element. This light-guiding device, together with the central illumination of the recessed lens surface, results in uniform illumination of the section or the area of ​​the optical sheet before the section and thus provides high performance.

[0019] Additionally or alternatively, radially emitting light-emitting diodes (LEDs) can also be used. Here, despite the radial radiation of light from the LEDs, the reflective element is responsible for deflecting the light emitted by the radially radiating LEDs in the forward direction, i.e., onto the optical sheet. Accordingly, the reflective element can be specifically designed to deflect the radially emitted light from each LED toward the optical sheet in the forward direction. This allows for particularly uniform illumination of the optical sheet in each region of the segment or within a section, thus enabling uniform illumination of the optical sheet or segment. It is advantageous in the use of radially radiating LEDs that the path of light to the reflective element or the wall element therein is relatively short. This generally provides a relatively compact lighting device for motor vehicles. In particular, the lighting device can be constructed with a relatively small thickness, especially measured from the printed circuit board to the optical sheet. Radially radiating LEDs can be particularly configured to radiate light radially outward from or around their circumference. At least not only, but also not predominantly, light can radiate separately from the front side of each LED, as is the case, for example, in top LEDs. However, decisively, light is also (especially primarily) radiated radially or annularly by the circumference of the light-emitting diode (LED). Here, the circumference of the LED is understood as the side of the LED that typically extends obliquely, especially orthogonally, relative to the front side. In other words, the circumference lies between the front and back sides of the LED with one or more sides thereon. In particular, radially radiating LEDs can be configured to radiate light radially outward at least half or substantially along their entire circumference. In other words, light can radiate radially outward along at least half, the dominant portion, or substantially the entire portion of the circumference, or in other words, annularly by each LED.

[0020] The configuration of the optical sheet with a concave lens and / or the selection of radially radiating light-emitting diodes (LEDs), combined with the LED light distribution and reflective elements, results in uniform illumination of the reflective elements and therefore the segments or segmental surfaces of the optical sheet. This provides segmented display functionality while simultaneously offering high optical performance, as almost all the light from the corresponding LEDs is utilized. Therefore, especially when multiple lighting devices are used within a lighting system to connect continuous or common light signatures, the lighting devices themselves, utilizing relatively weak LEDs, are already able to provide high intensity and achieve functions such as taillights, brake lights, driving direction indicators, or daytime running lights.

[0021] It is also possible that the segment of the reflective element has at least partially strip-shaped optical elements, or that strip-shaped optical elements are constructed within the segment. Here, strip-shaped optical elements are respectively provided on each surface or reflective wall of the segment or reflective element. Strip-shaped optical elements, which can also be called corrugated optical elements, can scatter the direct surface reflection of the light emitted by the LED and thus cancel the concentrated imaging of the light in the illumination, so as to avoid hot spots.

[0022] Furthermore, it can be specified that the distance between the light-emitting diode and the optical element is less than 15 mm, very preferably less than 12 mm, even more preferably less than 10 mm, and particularly preferably less than 8 mm. As a lower limit, this distance can be, for example, at least 2 mm, very particularly at least 4 mm, and even particularly at least 6 mm. Accordingly, a particularly compact lighting device is provided, which in particular has a small thickness.

[0023] Furthermore, the lighting fixture may have a grating mask (with one or more grating strips) that optically separates these sections from each other. The grating mask is particularly opaque (in the areas of its grating or its grating strips). The grating mask may, for example, be black. The grating strips or grating of the grating mask are thus responsible for separating the sections from each other in the cold and hot appearance of the lighting fixture, in order to improve the visual perception of the displayable light signature.

[0024] Here, the grating mask can be constructed, in particular, as a sheet material, foil, injection molded part, and / or laser ablation of the optical sheet. As a sheet material, a thin sheet material with a wall thickness between 0.1 mm and 0.5 mm can be used, which can be laser-processed to create openings in the segmented areas. The sheet material can then be clamped between the optical sheet and the housing frame or housing of the illumination device during installation, or bonded to the optical sheet or housing frame. The foil can be printed or bonded, for example. The foil or adhesive foil can be printed with a grid or grid strips and bonded to the optical sheet or clamped between the optical sheet and housing frame during installation. As an injection molded part, a two-component injection molded part can be used, for example. The grating mask can be injection molded onto the optical sheet as a black second component. During laser ablation, the optical sheet can be metallized or painted, and then the open segmented surfaces are treated with a free laser.

[0025] Furthermore, the lighting device can have a housing, particularly constructed as a housing frame or having a housing frame. A printed circuit board, reflective elements, and optical sheets can be housed within the housing. Additionally, a grating mask can also be housed within the housing. Fastening elements, such as screw posts, can be arranged on the back side of the housing.

[0026] Furthermore, it can be specified that the optical sheet has optical scattering elements on its front and / or back sides. These optical scattering elements can be, for example, pad-type optics or micro-optics, or diffractive diffuser structures or microstructures, or in the simplest case, etched or corroded structures.

[0027] According to a second aspect of the invention, the aforementioned task is solved by a lighting system for a motor vehicle having a lighting device according to a first aspect of the invention and a control unit for controlling the light signature display of the lighting device.

[0028] The lighting device can be manipulated in a particularly variable manner through a control unit or electronic device to display different content, such as various pictographs and signs, such as traffic signs or auxiliary signs in traffic, such as right arrows, directional arrows, pedestrian images, etc. This content, which can be presented by means of the corresponding illumination of multiple light-emitting diodes or sections, is understood here as a light signature. Such a light signature can be static or dynamic, that is, it may not change over time or it may change over time.

[0029] In particular, the lighting system may have multiple lighting devices according to the first aspect of the invention. A control unit may be configured to control at least two of the multiple lighting devices to display a common light signature.

[0030] Here, a common light signature is understood to mean that the light signatures of at least two lighting devices are coordinated with each other so as to show the same or coordinated content by means of illumination.

[0031] According to a third aspect of the invention, the task mentioned at the beginning is solved by a motor vehicle having a lighting device according to the first aspect of the invention or a lighting system according to the second aspect of the invention. Attached Figure Description

[0032] The invention is described in more detail below with reference to the accompanying drawings and embodiments. All features derived from the specification or drawings, including structural details, can be important to the invention not only in themselves but also in any different combinations. Hereinafter, it is shown that:

[0033] Figure 1 A top view of a lighting device according to an embodiment of the present invention is shown;

[0034] Figure 2 Show Figure 1 A perspective view of the lighting device;

[0035] Figure 3 Show Figure 1 A side view of the lighting device;

[0036] Figure 4 Showing without a housing Figure 1 A perspective view of the lighting device;

[0037] Figure 5 Show Figure 1 An exploded view of the lighting device;

[0038] Figure 6 Showing a device without a housing and without a grating mask. Figure 1 A perspective view of the lighting device;

[0039] Figure 7 Show Figure 1 Detailed diagram of the configuration components of the lighting device;

[0040] Figure 8 Show Figure 1 A perspective view of the printed circuit board of the lighting device;

[0041] Figure 9 Show Figure 1 A top view of the back side of the optical element of the lighting device;

[0042] Figure 10 yes Figure 9 A top view of the configuration components of the concave lens of the optical sheet;

[0043] Figure 11 Show Figure 10 A perspective view of the configuration components of the concave lens;

[0044] Figure 12 Showing running Figure 1 A schematic diagram of a cut-off portion of the lighting device;

[0045] Figure 13 Show Figure 12 The view has a solution for avoiding scattered light in unlit sections;

[0046] Figure 14 A schematic diagram of an illumination system according to an embodiment of the present invention operating with different light signatures is shown;

[0047] Figure 15 A schematic diagram of a lighting system according to another embodiment of the present invention, operating with a common light signature, is shown;

[0048] Figure 16 This is shown in operation with a common light signature. Figure 9 A schematic diagram of the lighting system;

[0049] Figure 17 This is shown in operation with another common light signature. Figure 9 A schematic diagram of the lighting system;

[0050] Figure 18 This is shown in operation with another common light signature. Figure 9 A schematic diagram of the lighting system;

[0051] Figure 19 A rear view of a motor vehicle according to an embodiment of the present invention is shown. Detailed Implementation

[0052] Similar or identical elements Figures 1 to 19 The same reference numerals are used in the accompanying drawings. For clarity, not all similar or identical elements are consecutively referred to as reference numerals.

[0053] Figures 1 to 3 The lighting device 1 according to an embodiment of the present invention is shown in top view, perspective view and side view respectively.

[0054] The lighting device 1 includes a housing 4, which is configured herein as a housing frame having an upper portion 2 and a lower portion 3. The housing 4 has a relatively small thickness relative to its width and height. The housing 4 is exemplarily configured herein, particularly in the upper portion 2, as rectangular, and especially square, so that the lighting device 1 as a whole has a rectangular shape. However, alternatively, the housing 4 or the lighting device 1 may also have other shapes, such as rectangular, circular, or elliptical.

[0055] As in Figure 1 As can be seen, the lighting device 1 has multiple configuration components 5, each comprising multiple segments 6. Here, the configuration components 5 are squarely constructed on the optical sheet 8 of the lighting device 1 in their basic shape or shape (see [reference]). Figure 5 And each segment 6 comprises four triangular sections. Each segment 6 can be connected by a light-emitting diode 11 arranged thereafter (see...). Figure 5 Illuminate individually and evenly.

[0056] Figure 4 A perspective view of the lighting device 1 without the housing 4 is shown, showing the light-emitting diode 11 (see [reference]). Figure 5 This is arranged on the printed circuit board 10 or the circuit board 5 and behind the reflective element 9. In addition, the back portion 12 of the housing 4 can be seen behind the printed circuit board 10, which allows the housing 4 to be closed from the back.

[0057] Figure 5 The lighting device 1 is shown in an exploded view. From this exploded view, it can be seen that the reflective element 9 has a segment 6 arranged within the configuration assembly 5 and repeating configuration assemblies 5. The reflective element 9 is here integrally arranged with all configuration assemblies 5 and segments 6. Alternatively, segments 6 can also be manufactured individually, however this is more expensive.

[0058] The reflective element 9 is arranged on the printed circuit board 10 having light-emitting diodes 11. Here, each light-emitting diode 11 is assigned to a segment 6 of the reflective element 9, or in other words, each segment 6 surrounds one of the light-emitting diodes 11 on the printed circuit board 10.

[0059] An optical sheet 8, made of, for example, glass or plastic, is arranged on the reflective element 9. A grating mask 7 is arranged on the optical sheet 8, which is responsible for optically separating the segments 6 from each other. All of the above components are housed in the housing 4.

[0060] Figure 6 An oblique view of the illumination device 1 without the housing 4, the optical sheet 8, and the grating mask 7 is shown. Here, it can be seen how each corresponding light-emitting diode 11 (not directly visible) is arranged in or surrounded by the corresponding section 6.

[0061] Figure 7 A detailed view of a configuration assembly 5 comprising four triangular segments 6 arranged in a square configuration on a printed circuit board 10 is shown. Each segment 6 has three reflective surfaces or reflective walls angled relative to each other, on which strip-shaped optical elements 13 are constructed near light-emitting diodes 11 respectively disposed for the segment 6. Here, the corners of the segments 6 are rounded. The segments 6 extend from the corresponding light-emitting diodes 11 toward an optical sheet 8 having an opening near the light-emitting diodes 11. This opening allows light to enter from the light-emitting diodes 11 onto the reflective surface, then onto a larger opening, and then exit from the opening onto the optical sheet 8, where it then passes through the optical sheet.

[0062] Figure 8 A perspective view of a printed circuit board 10 having light-emitting diodes 11 is shown. As can be seen, the light-emitting diodes 11 are arranged on the printed circuit board 10 in a repeating positive arrangement corresponding to the configuration component 5.

[0063] Figure 9 A top view of the back side of the optical plate 8 of the illumination device 1, i.e., the side facing the reflective element 9, is shown. Here it can be seen that a plurality of concave lenses 14 are constructed on the back side of the optical plate 8. The concave lenses are each triangularly constructed and arranged on the optical plate 8 in accordance with the configuration component 5 of the section 6, thereby assigning the lens 14 to the section 6 or opposite to the section.

[0064] Figure 10 and Figure 11The concave lenses 14 are shown in top and oblique views in a configuration assembly having four concave lenses 14. It can be particularly seen here that each lens 14 has a concave central surface, which correspondingly has a greater distance from the light-emitting diodes 11 disposed on the central surface by means of segments 6. Its shape corresponds to a pyramidal optics device, such that the lens has a relatively greater wall thickness in its outer region. This facilitates uniform illumination without emphasizing the intensity of the axial light-emitting diodes (especially in the case of so-called top LEDs) and thus allows for illumination of the area of ​​segment 6 or the optical sheet 8 in front of segment 6 without hot spots.

[0065] Figure 9 A cross-sectional view of the lighting device 1 is shown. Here, for example, a cross-section of the printed circuit board 10 containing the reflective surface or wall element of section 6, which includes three light-emitting diodes 11 and a reflective element 9, can be seen. Finally, the grating mask 7 is positioned behind the optical sheet 8.

[0066] The distance between the light-emitting diode 11 and the optical sheet 8 is chosen to be particularly small, for example, only 10 cm or less, in order to achieve the compactness or small thickness of the lighting device 1 described at the beginning. Accordingly, only a small amount of space is provided for the corresponding reflective element 9 or the corresponding reflector. But at the same time, it is necessary to achieve the most uniform illumination possible for the area of ​​the corresponding segment 6 or the optical sheet 8 in front of the corresponding segment 6.

[0067] To ensure this, as already described, a concave lens 14, for example, integrally constructed with the optical sheet 8, is used. The lens 14 also includes a light-guiding effect and, in conjunction with the prism surface of the lens 14 and the surrounding reflective surface of the segment 6, also includes additional light guidance, which, together with the central illumination of the concave lens surface, results in uniform illumination of the segment 6.

[0068] Now, as Figure 13 As shown in another view, light may be deflected from one segment 6 to another between the light-emitting diode 11 and the reflective element 9 or segment 6. This can also be called scattered light. The problem with this scattered light is that segments 6 that are not actively illuminated by the light-emitting diodes 11 respectively assigned to them are still illuminated in a small area. As a result, the desired light signature of the lighting device 1 is impaired.

[0069] To address this issue, a screen 15, particularly a passive LC display, is arranged on the front or visible side of the optical sheet 8. This screen is exemplarily composed of a first thin substrate 15, a second thin substrate 16, and liquid crystal therebetween. The substrates 15 and 16 can be, for example, glass plates or plastic films.

[0070] The screen 15 is now very specifically a so-called dye-doped display, in which the color pigments of the screen 15 are doped. In the non-operating state of the screen 15, for example, black color pigments determine the color of the screen 15.

[0071] The screen 15 is now programmed or configured with light-emitting diodes 11 or circuit boards 10 in such a way that the screen 15 is turned off or remains opaque in the region of segment 6 where the provided light-emitting diodes 11 are not activated, or in the region opposite to segment 6, so that only a predetermined colored pigment, i.e., black, is visible. Thus, even if light shines on the optical sheet 8 there, scattered light cannot be seen from the outside in the inactive segment 6.

[0072] Screen 15 is further programmed or configured in a control technique to be switched on relative to segment 6, which is illuminated by turning on LED 11, so that screen 15 can be switched transparently relative to segment 6 in that area, as in Figure 13 As can be seen in the image. Thus, the light from the light-emitting diode 11 in this section 6 can be emitted from the optical sheet 8 or the illumination device 1 and can be optically perceived.

[0073] Figure 14 A lighting system 20 having multiple, currently exemplarily four, lighting devices 1 is schematically shown. The lighting devices 1 can be operated by means of individual units or by means of a common control unit 21 as shown.

[0074] exist Figure 14 Different light signatures are shown, which are displayed by various lighting devices 1. Here, various contents or symbols are reproduced by means of light signatures, such as crosses for pedestrians who have stopped, are walking, or are stationary.

[0075] When using LEDs 11 that cover a color spectrum (yellow, red, blue), it is also possible to divide the surface of the lighting device 1, for example, by having a larger red area (red LED) and a smaller yellow area (yellow LED), or other color divisions. This allows for two functions, such as a taillight and a driving direction indicator, or three functions, such as a rear brake light and a driving direction indicator.

[0076] However, it is also possible to coordinate the light signatures of the individual lighting devices 1 with each other. Therefore, for example... Figure 15 Three lighting devices 1 of the lighting system 20 are shown, each displaying the same light signature.

[0077] Figure 16 and Figure 17 Different and self-closed or common light signatures are shown respectively, which are generated by the four lighting devices 1 when they are arranged or connected in series with each other.

[0078] Figure 18 The repetition of the light signature on the four lighting devices 1 of the lighting system 20 is also shown. The light signature employs an indicator function, for example, that available during the operation of a motor vehicle 30 equipped with the lighting system 20, namely a right arrow display. This can also be called a driving indicator and can be used, for example, to enable the motor vehicle 30 equipped with the driving indicator (see...). Figure 14 Turn right and drive out.

[0079] Figure 19 The following view shows a motor vehicle 30 according to an embodiment of the present invention. The motor vehicle 30 is equipped with the previously described lighting systems 20, which are configured here as taillights of the motor vehicle 30 and are therefore capable of displaying various common or different light signatures, such as indicating a turn by means of corresponding arrow diagrams as light signatures.

[0080] List of reference numerals

[0081] 1 lighting device

[0082] Part 2

[0083] Part 3

[0084] 4 housings

[0085] 5 Configuration Components

[0086] 6 sections

[0087] 7 grating masks

[0088] 8 optical plates

[0089] 9 reflective elements

[0090] 10 Printed Circuit Boards

[0091] 11 Light Emitting Diodes

[0092] 12 dorsal parts

[0093] 13 strip optical components

[0094] 14 lenses

[0095] 15 screens

[0096] 16 First Substrate

[0097] 17 Second substrate

[0098] 20 Lighting Systems

[0099] 21 control units

[0100] 30 motor vehicles

Claims

1. A lighting device (1) for a motor vehicle (30), wherein The lighting device (1) has a printed circuit board (10), an optical sheet (8), and a reflective element (9). The printed circuit board has a plurality of light-emitting diodes (11) arranged on the printed circuit board. The reflective element (9) is arranged between the printed circuit board (10) and the optical sheet (8). The reflective element (9) has a plurality of segments (6). The reflective element (9) is divided into the plurality of segments. Each light-emitting diode (11) is associated with one segment (6) such that light emitted from the light-emitting diode (11) is reflected on one of the segments (6) of the reflective element (9) and... Furthermore, through the optical sheet (8), it is characterized in that each of the segments (6) has a triangular or substantially triangular shape, and each segment (6) of the reflective element (9) is correspondingly provided with a concave lens (14), the concave lens being arranged between the reflective element (9) and the optical sheet (8), the concave lens (14) being constructed on the side of the optical sheet (8) opposite to the reflective element (9) and having a concave central surface, the central surface correspondingly having a greater distance from the light-emitting diodes (11) respectively provided to the central surface by means of the segments (6).

2. The lighting device (1) according to claim 1, wherein Multiple segments (6) are combined accordingly to form a configuration component (5) that repeats row by row and column by column on the reflective element (9).

3. The lighting device (1) according to claim 2, wherein Each of the configuration components (5) has a rectangular or substantially rectangular shape accordingly.

4. The lighting device (1) according to any one of claims 1 to 3, wherein, Each light-emitting diode (11) is respectively associated with a segment (6) such that light emitted from the corresponding light-emitting diode (11) is reflected on the reflective element (9) and passes through the optical sheet (8) in the region of the segment (6) associated with the corresponding light-emitting diode (11).

5. The lighting device (1) according to claim 1, wherein Each of the concave lenses (14) and optical plates (8) is constructed as a single unit.

6. The lighting device (1) according to any one of claims 1 to 3, wherein, Each of the concave lenses (14) has a triangular or substantially triangular shape.

7. The lighting device (1) according to any one of claims 1 to 3, wherein, Each segment (6) of the reflective element (9) has at least partially strip-shaped optical elements (13).

8. The lighting device (1) according to any one of claims 1 to 3, wherein, The distance between the light-emitting diode (11) and the optical sheet (8) is less than 15 mm.

9. The lighting device (1) according to any one of claims 1 to 3, wherein, The lighting device (1) also has a grating mask (7) that separates the sections (6) from each other.

10. The lighting device (1) according to any one of claims 1 to 3, wherein, The lighting device (1) also has a housing (4) in which a printed circuit board (10), a reflective element (9) and an optical sheet (8) are housed.

11. The lighting device (1) according to any one of claims 1 to 3, wherein, The optical sheet (8) has optical scattering elements on its front and / or back sides.

12. A lighting system (20) for a motor vehicle (30), the lighting system having a lighting device (1) according to any one of claims 1 to 11 and having a control unit (21) for controlling the light signature display of the lighting device (1).

13. The lighting system (20) according to claim 12, wherein, The lighting system (20) has a plurality of lighting devices (1) according to any one of claims 1 to 11, and the control unit (21) is configured to control at least two of the plurality of lighting devices (1) to display a common light signature.

14. A motor vehicle (30) having a lighting device (1) according to any one of claims 1 to 11 or a lighting system (20) according to claim 12 or 13.

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