Ambient lighting equipment for motor vehicles

Abstract

This invention relates to a motor vehicle having an ambient lighting device for illuminating the ground. The ambient lighting device includes a controller and a projection module. The projection module has a light-emitting device comprising multiple illuminating devices and an array of projection optical systems. Each projection optical system includes a target structure and a projection lens. The array of projection optical systems has multiple subarrays, each subarray individually illuminating the illuminating devices of its respective subarray with the configuration of the light-emitting devices, thereby generating a sub-pattern on the ground by means of the projection of the target structure by the projection optical system of the respective subarray. The controller is designed to operate the projection module in a dynamic operating mode in which the brightness of the illuminating devices automatically changes based on a sequence pattern. The sequence pattern for the corresponding illuminating devices describes the change in brightness of the illuminating devices over time, the change in time being at least partially distinguished between at least two illuminating devices within a predetermined time period.

Description

Technical Field

[0001] The present invention relates to a motor vehicle including environmental lighting equipment for ground lighting in the environment of a motor vehicle. Background Technology

[0002] It is known that ambient lighting devices are integrated into the exterior door handles of vehicles, and these devices are activated when the vehicle is unlocked. Similarly, exit lighting devices exist, which are integrated into the lower edge of the door jamb of a motor vehicle. A disadvantage of both ambient lighting and exit lighting in exterior door handles is that they are only visible when the door is closed or open.

[0003] An ambient lighting device using a projection module comprised of an array of projection optics is known from document DE102013211877A1. A light pattern, such as a stripe pattern, is projected onto the ground in a motor vehicle environment. The projection module is only suitable for generating a single, predetermined light distribution.

[0004] Document DE102015220911A1 discloses an ambient lighting device including a projection module, which has multiple sub-arrays of a projection optics system. Each sub-array, with a corresponding light source, can generate different light distributions on the ground in a motor vehicle environment. This allows for the generation of not only a uniform light distribution but also a light distribution in the form of a light pattern. Summary of the Invention

[0005] The objective of this invention is to provide a motor vehicle including an ambient lighting device that can simply and effectively generate a striking light distribution on the ground in the environment of the motor vehicle.

[0006] This task is solved by a motor vehicle according to the present invention.

[0007] According to the present invention, a motor vehicle—particularly a passenger vehicle—has an ambient lighting device for illuminating the ground in the environment of the motor vehicle. The ambient lighting device includes a controller for controlling the illumination of the ground and a projection module, and, if necessary, multiple projection modules. Each projection module has a light-emitting device comprising multiple illuminating elements and an array of projection optical systems. Each projection optical system includes a corresponding target structure and a corresponding projection lens, such that when the corresponding projection optical system is illuminated by the light-emitting device, the corresponding target structure is projected onto the ground through the corresponding projection lens.

[0008] Preferably, a projection module is used in a motor vehicle according to the invention. This projection module is based on projection display technology, as described in document DE102009024894A1 or document DE102011076083A1. Unlike the projection displays disclosed therein, the array of the projection optics system is divided into multiple subarrays for generating different sub-patterns, as will be explained in more detail below. The entire disclosure of the two documents mentioned above is the subject of this application upon reference.

[0009] According to the present invention, the array of the projection optical system has multiple (non-overlapping) subarrays, each of which can be individually illuminated by the corresponding illumination device via a light-emitting device. This allows for the generation of sub-patterns on the ground within a motor vehicle environment by projecting the target structure belonging to the projection optical system of the corresponding subarray. Within a corresponding subarray, the target structure of the projection optical system is identical; however, the target structure is distinguishable between subarrays. The target structure thus produces identical single images, preferably projected onto the ground in the motor vehicle environment at the same size and position. The superposition of these single images produces corresponding sub-patterns.

[0010] The concept of a sub-graphic can be understood broadly. It can refer to graphics with any structure, such as a pattern. Furthermore, a sub-graphic may, if necessary, contain one or more symbols, wherein the symbols may, in particular, have textual elements. Symbols can be used, for example, to indicate the manufacturer or model of a motor vehicle.

[0011] The controller of the ambient lighting device according to the invention is designed to cause the projection module to operate in a dynamic operating mode for a predetermined time period. The predetermined time period is not necessarily a fixed length, but can be variably determined. In particular, the start and / or end of the time period can be coupled with predetermined events, examples of which are mentioned further below.

[0012] In the dynamic operating mode, the brightness of at least some, and preferably all, of the plurality of lighting devices automatically changes based on a predetermined (temporal) sequence pattern. The predetermined sequence pattern for each of the at least some lighting devices describes the temporal variation of the lighting device's brightness. The temporal variation of the brightness of a corresponding lighting device can be understood here as a brightness variation process, which includes changes in brightness; however, it is not excluded that the brightness may remain constant in one or more segments of a predetermined time period of the dynamic operating mode. Furthermore, the temporal variation (i.e., the corresponding brightness variation process) is at least partially distinguished between at least two lighting devices of the at least some lighting devices, and especially between all lighting devices, within the predetermined time period of the dynamic operating mode. Preferably, the skaliert brightness variation process of the corresponding lighting device, i.e., its relative brightness to its corresponding maximum brightness within the predetermined time period, is at least partially distinguished within the predetermined time period.

[0013] According to the present invention, the brightness of the illuminator of the light-emitting device is based on a predetermined sequence pattern, which is designed such that dynamic motion effects are generated by means of illustrated sub-patterns through different temporal variations in the brightness of the illuminator. This produces a light distribution that is highly appealing to the observer.

[0014] In a preferred embodiment, the temporal variations between all the lighting elements of the at least some of the lighting devices in the light-emitting device are at least partially distinguished within a predetermined time period. This allows for a particularly high dynamic range of the light projection generated on the ground.

[0015] In another particularly preferred embodiment, at least a portion of the sub-graphic overlaps on the ground in the environment of the motor vehicle. Preferably, all sub-graphics overlap, i.e., each sub-graphic covers at least a portion of every other sub-graphic on the ground in the environment of the motor vehicle.

[0016] In another particularly preferred design, the sequence pattern has a sequence pattern segment that repeats periodically over time, thereby generating a light projection that is particularly easy for the observer to understand and remember, and that the observer will recall the light projection at later times.

[0017] The number of subarrays in the projection optical system array can be selected differently. Preferably, the array consists of 2 to 8 subarrays. Arrays consisting of 4 subarrays have proven to be particularly practical. Depending on the design, the number of projection optical systems in the respective subarrays can also be selected differently. Preferably, the subarray has between 30 and 40 projection optical systems. The number of projection optical systems can also be differentiated among the subarrays.

[0018] The lighting devices configured for the subarray can be designed differently. Preferably, the lighting devices include a single light source, preferably an LED light source or a laser source. If necessary, one part of the lighting device includes an LED light source and another part of the lighting device includes a laser source.

[0019] In another preferred embodiment, the predetermined sequence pattern is designed such that the brightness of at least some and preferably all of the illuminators of the light-emitting device changes at least partially through dimming within the predetermined sequence pattern. However, it is also possible, if necessary, that the brightness of the illuminators changes at least partially through abrupt switching on and off within the predetermined sequence pattern.

[0020] As already mentioned above, the dynamic operating mode can be coupled with different events. For example, the start of the dynamic operating mode can be triggered by a user approaching the vehicle, where the user carries a wireless key for starting the vehicle. The term wireless key can be interpreted broadly here. It can be any unit that enables access to the vehicle and subsequent starting of the vehicle through contactless communication with the vehicle.

[0021] Alternatively or additionally, the initiation of the dynamic operating mode may be combined with the unlocking of the vehicle's central locking device and / or the opening of the vehicle's entry doors. It is also possible that the initiation of the dynamic operating mode is coupled with engaging reverse gear in the vehicle. In this case, the light projection generated in the dynamic operating mode is used as a maneuvering or shunting light. This maneuvering or shunting light preferably ends when the speed in reverse gear exceeds a predetermined threshold, for example, 10 km / h. Preferably, the maneuvering or shunting light also ends when the vehicle is re-engaged into drive.

[0022] In another design of the motor vehicle according to the invention, the controller is further designed to cause the projection module to operate in a static operating mode for predetermined time intervals, in which at least a portion, and in particular all, of the illumination devices of the light-emitting device operate at a constant brightness and the brightness of the illumination devices does not change. The static operating mode may, if necessary, also be coupled to a defined event. In a variant, in the motor vehicle, the choice between using a dynamic or static operating mode is determined, for example, by input on a user interface. If a static operating mode is used, the start or end of the static operating mode is coupled to the same event, which has been described above for the dynamic operating mode.

[0023] In another preferred embodiment of the invention, one or more light-blocking elements are provided in the projection module, the light from the illumination devices of the respective subarrays being projected only onto the respective subarrays. This achieves separation of the illumination devices from each other in a simple manner.

[0024] The design of the projection module allows for the arrangement of varying numbers of projection optical systems within the array, such as 100 to 200. Similarly, the sizes of the individual projection lenses can be selected differently. Preferably, the corresponding projection lenses have a diameter of 2000µm or less.

[0025] In another preferred embodiment, white light is used to generate the sub-pattern. The light-emitting device, or more precisely, the illumination device, thus produces white light.

[0026] In another preferred embodiment, the projection module is disposed in a light well extending into the vehicle body, thereby avoiding direct strong light from the lighting device of the projection module.

[0027] In another design, the installation position of the projection module in the vehicle can be adjusted by setting up a corresponding adjustment device. This adjustment device can enable manual and / or automatic adjustment of the installation position depending on the usage. In this way, manufacturing tolerances when the projection module is integrated into the vehicle can be taken into account, and the corresponding light distribution will always produce sharp imaging through the adjustment of the installation position of the projection module.

[0028] In a preferred variant, the projection module of the ambient lighting equipment is installed in the area of ​​a vehicle entrance door, such that one or more sub-graphics are generated in the opening area of ​​the entrance door, wherein the position of these sub-graphics is preferably not changed or obscured by opening the entrance door. The entrance door is preferably a personnel entrance door.

[0029] In this variant of the invention, safety when people enter or exit a motor vehicle is improved by providing good lighting on the ground before the personnel entrance.

[0030] In another variation, the projection module is disposed in the threshold of the vehicle, particularly in a location along the longitudinal direction of the vehicle from the front end to the rear end, in front of the personnel entrance door.

[0031] In another particularly preferred embodiment, the projection module is arranged in the vehicle such that the entirety of all sub-graphics on one side of the vehicle extends substantially along the driver's or passenger's entrance door and the entrance door for rear passengers located behind the driver's or passenger's entrance door. Preferably, ambient lighting equipment including the corresponding projection module is arranged on both sides of the vehicle.

[0032] Alternatively or additionally, it is possible to install ambient lighting equipment in the motor vehicle, the projection module of which generates, during operation, a sub-graphic below the trunk lid and / or along the longitudinal direction of the motor vehicle behind the trunk lid. The term "trunk lid" can be broadly understood and may include, in addition to the trunk lid of a multi-stage rear-end sedan, a rear cover for vehicles with a sloping rear, hatchback, or stepped rear.

[0033] In another variant of the motor vehicle according to the invention, a sub-pattern on the ground shows the detection area of ​​a wireless sensor, wherein the detection area is preferably an operating area, thereby automatically triggering an operating action in the motor vehicle when a body part and / or object is introduced into the operating area. In a preferred variant, the wireless sensor is designed such that when a foot is detected in the detection area, the trunk access door automatically unlocks and / or opens.

[0034] In addition to the motor vehicle described above, the present invention also relates to an ambient lighting device for the motor vehicle. The ambient lighting device is configured to illuminate the ground in the environment of the motor vehicle and includes a controller for controlling the illumination of the ground and a projection module.

[0035] The projection module has a light-emitting device including multiple lighting devices and an array of projection optical systems, wherein each projection optical system includes a target structure and a projection lens, so that when the corresponding projection optical system is illuminated by the light-emitting device, the target structure is projected onto the ground through the projection lens.

[0036] The projection optical system array has multiple subarrays, each of which can be individually illuminated by a light-emitting device. This allows the projection of the target structure belonging to the projection optical system within each subarray onto the ground in a motor vehicle environment, generating a sub-pattern. Within a given subarray, the target structure of the projection optical system is identical; however, the target structure is distinguishable between subarrays.

[0037] The controller of the ambient lighting device according to the invention is designed to cause the projection module to operate in a dynamic operating mode for a predetermined time period, in which the brightness of at least some of the plurality of lighting devices automatically changes based on a predetermined sequence pattern, wherein the predetermined sequence pattern for each of the at least some lighting devices describes the change in brightness of the lighting device over time, and the change over time is at least partially distinguished between at least two lighting devices within the predetermined time period.

[0038] The ambient lighting device according to the present invention may have one or more of the features described above in the preferred embodiment of the motor vehicle according to the present invention, provided that these features relate to the ambient lighting device. Attached Figure Description

[0039] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0040] In the attached diagram:

[0041] Figure 1 A side view of a motor vehicle including an ambient lighting device according to the present invention is shown;

[0042] Figure 2 Show Figure 1 A top view of a motor vehicle;

[0043] Figure 3 Shown in Figure 1 A detailed schematic view of the ambient lighting equipment shown in the figure;

[0044] Figure 4 Showing the view along the longitudinal direction of the motor vehicle Figure 3 A view of the ambient lighting equipment;

[0045] Figure 5 A detailed cross-sectional view is shown, illustrating the projection module shown in the preceding figures;

[0046] Figure 6 Show Figure 5 Top view of the projection optical system array of the projection module;

[0047] Figure 7 The diagram illustrates the control methods. Figure 5 Examples of sequence patterns for LED projection modules; and

[0048] Figures 8 to 11 An example of a graphic is shown, which can be... Figure 5 It is generated in the dynamic operating mode of the projection module. Detailed Implementation

[0049] The following describes an embodiment of a motor vehicle according to the present invention, which includes an ambient lighting device integrated into the sill of the motor vehicle and used for lateral lighting in the area next to the passenger entrance door of the motor vehicle.

[0050] Figure 1 A side view of a motor vehicle in the form of a passenger bus 1 is shown. The passenger bus has a driver's door 2 and a rear door 3 on the left side shown. Similarly, in the vehicle ( Figure 2 A passenger door 2' and a rear door 3' are provided on the opposite side of the passenger door. Figure 1In this embodiment, an ambient lighting device including a projection module 7 is provided in the threshold 4 below doors 2 and 3. The lighting device is located at the front end of the threshold in the area of ​​the wheel cover 5, which surrounds the wheel 6. The projection module of the ambient lighting device has an array of projection optics systems to generate a targeted, dynamically changeable light distribution next to doors 2 or 3 of the vehicle.

[0051] Projection module 7 uses projection display technology, as described in the aforementioned documents DE102009024894A1 or DE102011076083A1. In this projection display, an image is projected using a multi-channel optical system comprising a two-dimensional array of projection optics, the projection optics system having microlenses and a target structure. Unlike this projection display, in projection module 7, the array of projection optics is divided into four sub-arrays with different projection optics. Each sub-array is individually illuminated by an assigned LED, as described in detail below.

[0052] exist Figure 2 The diagram schematically illustrates a light distribution LV, which can be generated on the ground next to the vehicle 1 via a projection module 7. This light distribution is a pattern generated when all LEDs of the subarray of the projection module are simultaneously activated. The pattern here is a superposition of four sub-patterns, each generated by illuminating its corresponding subarray with an assigned LED.

[0053] The projection module 7 is very compact and has dimensions in the centimeter range. In one variant, the width, height, and length of the projection module are approximately 15 mm. Each projection optics system of the corresponding subarray of the projection module contains the same target structure and thus produces the same single image. The total image describing the sub-patterns generated by the corresponding subarrays is composed of the superposition and combination of these single images. The target structure differs between the subarrays, thus producing different sub-patterns using each subarray. As already mentioned, in Figure 1 or Figure 2 The diagram shows the generation of the light distribution LV, which is projected onto the ground next to doors 2 and 2'. Figure 1 In the figure, the direction of light propagation projected onto the ground by the projection module 7 is indicated by reference numeral 8.

[0054] The light distribution projected onto the ground next to the vehicle (LV) is determined by... Figure 2 The top view shows and creates a light carpet effect. It's important to note that the light distribution differs from that in... Figure 1The image is again shown on the right side of vehicle 1, adjacent to doors 2' and 3'. This is possible because projection modules 7 are symmetrically installed on the right and left sides of the vehicle. In other words, a corresponding mirrored light distribution is generated not only on the left side of the vehicle but also on the right side adjacent to the entrance door. For clarity, in Figure 2 The light distribution adjacent to gates 2' and 3' is given again in the text. Figure 2 In this embodiment, the light distribution LV shows a pattern of parallel bars, each bar extending obliquely along the longitudinal axis of the vehicle. Each bar is darkly shown and, in the actual light distribution, represents a bright bar on the ground beside the vehicle. As shown by... Figure 2 As can be seen, the light distribution widens from the area behind the front door 2' to the area behind door 3'. Furthermore, the stripe pattern in the rear area is blurred, an effect achieved by reducing the brightness of the stripes.

[0055] The striped pattern shown is merely exemplary for the generated light pattern, and any other pattern can be generated. However, it is important to the invention that the projection module 7 can operate in a dynamic operating mode, in which it generates a light pattern that changes over time. This is achieved by a temporal variation in the brightness of the LEDs assigned to the respective sub-arrays. This variation causes the corresponding sub-pattern to appear on the ground beside the vehicle with varying brightness, thus creating a dynamic motion effect for the observer. In the embodiment described herein, the dynamic operating mode is used as a welcome scene for the driver or passenger. Here, the approach of a wireless key carried by the driver or passenger to the vehicle is detected in a manner known per se, subsequently triggering the generation of a pattern that moves laterally and dynamically beside the vehicle.

[0056] If necessary, the light pattern can be generated, for example, only in the area of ​​the rear door 3 or 3'. In this case, the projection module can be positioned at the front edge of the rear door. Furthermore, the arrangement of the projection module in the sill 4 ensures that there is no obstruction of the light distribution when the door is opened, meaning that the light distribution is always visible on the ground of the vehicle, independent of the door's position.

[0057] Figure 3 Shown in the cross section Figure 1 Detailed view of the projection module. The module 7, integrated into the sill 4 adjacent to the wheel cover 5, has a schematically shown light-emitting device 10 comprising four lighting elements in the form of a single LED, as illustrated below. Figure 5 As detailed in the description, the array 11 of the projection optical system is connected to the light-emitting device 10. This array is again shown only schematically and similarly by means of... Figure 5 This was further elaborated upon. According to... Figure 3 The projection module is set in the light well 9 that extends backward at an angle, thus ensuring that the light source cannot be directly seen, in order to meet legal requirements.

[0058] Figure 4 Again, the cross-section shows the view from front to back along the longitudinal direction of the vehicle. Figure 3 The view of the projection module. Figure 4 Next to module 7, the front wheels 6 and sill 4 of the vehicle are visible. The sill extends at an angle of approximately 45° to the ground in a certain section. The projection module 7 is shown schematically opposite this section, and the light well 9 is not shown again for clarity. The projection module 7 is held on the sill by a holding device, of which the light well 9 is part. The holding device itself is not shown in detail again. The holding device can be removed from the sill, allowing the projection module to be replaced with a new one in case of failure. To compensate for manufacturing tolerances, an adjustment device is preferably provided, by which the position of the projection module relative to the light well can be manually and, if necessary, automatically adjusted within predetermined limits by a corresponding actuator. This ensures that the light distribution on the ground is always sharply imaged.

[0059] Figure 5 The cross-sectional view shows the detailed construction of the projection module 7 in the preceding diagram. This module, as a light-emitting device, has two LEDs 10a and two LEDs 10b, wherein... Figure 5 The cross-sectional view only shows a single LED 10a and a single LED 10b. LEDs 10a and 10b are in Figure 5 The light beam is emitted in an upward direction. To guide the beam, a collimator lens 12a or 12b is positioned above each LED 10a and 10b. The light emitted from the collimator lens from the LED is incident on an array 11 of the projection optics system, which in this embodiment is divided into four sub-arrays 11a, 11b, as described further below. Figure 6 As can be seen. From Figure 5 The cross-sectional view only shows two subarrays of these subarrays. Each of the subarrays has multiple configured projection or microlenses 14 along with the target structure 13. For clarity, in Figure 5 The diagram shows only one target structure and one projection lens. The same target structure is introduced in each subarray, where, however, the target structure of one subarray is distinguishable from the target structures of all the other subarrays.

[0060] The array is divided into four subarrays. Figure 6 It can be seen that it gave again Figure 5 A top view of array 11 from above. The figure also shows again the diagram for... Figure 5 The cross-sectional line LL of the cross-sectional view. As can be seen, there are four square subarrays 11a and 11b, where, in Figure 6In this configuration, two sub-arrays 11a and two sub-arrays 11b are arranged sequentially. Each sub-array has a square area formed by adjacent projection optical systems, which again include microlenses 14 and target structures 13. Figure 6 Only microlens 14 is visible here, and for clarity, it is also only partially indicated by the reference numerals in this drawing. Figure 6 In the example, each subarray 36 contains a projection optical system arranged in a square configuration, including a corresponding lens 14. This number is merely exemplary, and different numbers of projection optical systems may also be arranged in the respective subarrays. Furthermore, it is not mandatory that the various subarrays have the same size and shape.

[0061] All subarrays, along with the associated collimator lenses and LEDs, have the same composition. Figure 5 The disclosed construction, however, differs in that while the target structure 13 is identical within a corresponding subarray, it varies between the subarrays. This also applies to the two subarrays designated by the same reference numerals 11a or 11b. To ensure that the light from the respective LED is incident only on the individual subarray on which it resides, a light-shielding element 15 extends between all adjacent subarrays, wherein such a light-shielding element is composed of… Figure 5 As can be seen from the cross-sectional view.

[0062] exist Figure 5 The diagram also schematically illustrates the design of a controller for operating the corresponding LEDs 10a or 10b. The controller comprises a controller 16 installed in the vehicle and connected to the vehicle's LIN bus 17. A chip 18 is coupled to this LIN bus. This chip, along with all four LEDs 10a and 10b of the four subarrays 11a and 11b, is mounted on a printed circuit board (not shown), through which wires 19 are provided, connecting the chip 18 to the corresponding LEDs. Figure 5 The cross-sectional view again shows only two of the four wires in the setup.

[0063] Control commands for adjusting the brightness of each LED are output to the LIN bus 17 via controller 16. These commands are received by chip 18, which then uses corresponding electrical signals on wires 19 to adjust or change the brightness of the LEDs according to the commands from controller 16. Controller 16 stores control commands for dynamic and static operating modes. In static operating mode, all LEDs in projection module 7 are turned on, thereby projecting a sub-graphic onto the ground next to the vehicle through each sub-array. For example, in… Figure 2As shown, this results in an overall light distribution LV. For dynamic operating modes, a temporal sequence pattern is stored in the controller 16, which causes the brightness of each LED to vary differently over a predetermined time period, thereby generating the effect of a dynamically moving light carpet.

[0064] Figure 7 An exemplary illustration shows a time-series pattern SM for the dynamic operating mode of projection module 7. In Figure 7 The text again presents four time axes t extending horizontally, where each individual time axis involves... Figure 6 Different LEDs in the subarray. Furthermore, in Figure 7 The brightness H of the corresponding LED is given again along the vertical direction, where each LED has a separate time-varying process of its brightness, which is given again by the corresponding brightness lines H1, H2, H3, and H4. The intersection of the corresponding time axis and the brightness axis corresponds to the brightness 0 for the brightness lines, which extend along the time axis under consideration. Furthermore, for clarification, for each brightness variation process, the brightness value of 50% of the highest power of the LED is represented by the line L50.

[0065] As can be seen from the sequence mode SM, the brightness of each LED is controlled differently. The first LED, corresponding to brightness line H3, is turned on first, and the other LEDs are activated subsequently. All LEDs are initially adjusted to approximately 50% of their brightness value. Then, the brightness of the different LEDs changes; in the example shown, the LED with brightness line H1 initially increases in brightness while the LED with brightness line H2 decreases in brightness. Conversely, at later moments, the LED with brightness line H1 dims, while the LED with brightness line H3 increases in brightness. During the shown time interval, the brightness of the LED with brightness line H4 remains essentially constant. However, this brightness can be appropriately varied at later moments. The changes in the brightness of each LED are... Figure 7 The temporal sequence patterns shown are merely exemplary and can be designed arbitrarily differently. However, the key element is the dynamic effect of generating moving light patterns through variations in brightness.

[0066] Figures 8 to 11 Exemplarily illustrating the use of in Figure 5 The corresponding subarrays of LEDs in the projection module generate corresponding sub-patterns in order to produce a dynamic light carpet. Figures 8 to 11 This shows the light pattern generated beside the vehicle at a continuing moment during the dynamic operating mode. In each of these figures, it is again indicated by arrow P. Figure 1 The extended dimensions of the motor vehicle from front to back. An exemplary light pattern is shown, projected onto the ground to the left of the motor vehicle, as also... Figure 1 The situation in [the context]. However, the current situation differs from [previous context]. Figure 1 and Figure 2 Generate a light pattern with a honeycomb structure. The bright elements of the light pattern are... Figures 8 to 11 The middle is given again as the dark target and forms a hexagonal or hexagonal segment.

[0067] exist Figure 8 In this scenario, the corresponding dynamic operating mode just begins. At that moment, only one of the four LEDs of the projection module 7 is activated. A sub-graphic G1 is generated through the configured sub-array, and this sub-graphic is only located in the area adjacent to the position of the projection module 7 in the threshold. Later, the other LEDs of the projection module 7 are activated to generate the sub-graphic G2. This... Figure 9 The figure is shown in the diagram. It illustrates a state where not only sub-graphic G1 is projected onto the ground via a corresponding switched-on LED, but also sub-graphic G2 is projected onto the ground via an additional switched-on LED. This generates the overall graphic G'. Because sub-graphic G2 also covers the area further rearward relative to sub-graphic G1 along the longitudinal direction of the vehicle, the overall graphic G' has a larger extension dimension along the corresponding side of the vehicle. Furthermore, sub-graphic G2 fills the dark area of ​​the preceding sub-graphic G1 with a corresponding hexagon.

[0068] In the same way, in Figure 10 In the scenario, another of the four LEDs is turned on, generating a sub-pattern G3. This causes the overall pattern G' to increase again, and the overall pattern extends further rearward along the longitudinal direction of the vehicle because sub-pattern G3 covers the area further behind sub-patterns G1 and G2 along the longitudinal direction of the vehicle. In addition, sub-pattern G3 fills the dark area of ​​the preceding pattern G' again with corresponding hexagons.

[0069] Figure 11 The following scenario is illustrated, in which all four LEDs of projection module 7 are turned on. In other words, sub-pattern G4 is now additionally generated by the last LED of the corresponding sub-array turned on. These sub-patterns again fill the dark areas of the preceding pattern G" with corresponding hexagons and extend further rearward along the longitudinal direction of the vehicle than the other sub-patterns G1 to G3. Thus, the final overall pattern G'" is produced, which exhibits an optically attractive honeycomb structure that extends along the longitudinal direction of the vehicle from the projection module to the area of ​​the rear wheels of the vehicle.

[0070] Using Figures 8 to 11The described dynamic operating mode can produce an attractive light effect in the form of a dynamically magnified light carpet. However, the dynamic operating mode is merely exemplary and the brightness of the individual LEDs can also be varied in another way, provided that the time-varying light pattern is generated on the ground of the vehicle.

[0071] The embodiments of the present invention described above have a number of advantages. In particular, a projection module consisting of multiple projection optical systems generates a dynamically changeable light distribution on the ground in a motor vehicle environment. In this way, very attractive lighting effects can be achieved, for example, for welcoming scenes for drivers or passengers of motor vehicles. These dynamic lighting effects can be generated in a simple manner by individually controlling corresponding LEDs, which illuminate sub-arrays of the projection optical system array, thereby producing corresponding sub-patterns on the ground in a motor vehicle environment. Furthermore, by using a compact projection module, less structural space is required, and the generated light patterns remain visible even when the lighting devices of the projection module are contaminated or partially obscured.

[0072] List of reference numerals

[0073] 1 motor vehicle

[0074] 2', 2', 3', 3' doors

[0075] 4 thresholds

[0076] 5 wheel covers

[0077] 6 wheels

[0078] 7 projection modules

[0079] 8 Light propagation

[0080] LV light distribution

[0081] 9 light well

[0082] 10 Lighting Devices

[0083] 10a, 10b LED

[0084] Array of 11 projection optical systems

[0085] 11a and 11b subarrays

[0086] Collimator lenses 12a and 12b

[0087] 13 Target Structure

[0088] 14 projection lenses

[0089] 15 shades

[0090] 16 controllers

[0091] 17 LIN bus

[0092] 18 chips

[0093] 19 conductors

[0094] LL section line

[0095] T-time axis

[0096] H brightness

[0097] H1, H2, H3, H4 brightness lines

[0098] The brightness of L50 at 50% of the LED's maximum power.

[0099] P. Longitudinal extension dimensions of motor vehicles

[0100] G', G", G'" graphics

[0101] G1, G2, G3, G4 sub-graphics.

Claims

1. A motor vehicle having an ambient lighting device for ground lighting in the environment of the motor vehicle (1), wherein, - The ambient lighting device has a control device (16) for controlling the lighting of the ground and a projection module (7), the projection module having a light-emitting device (10) including a plurality of lighting devices (10a, 10b) and an array (11) of projection optical systems, wherein each projection optical system includes a target structure (13) and a projection lens (14), so that when the corresponding projection optical system is illuminated by the light-emitting device (10), the target structure (13) is projected onto the ground through the projection lens (14); - The array (11) of the projection optical system has multiple subarrays (11a, 11b), each of which can be individually illuminated by the configuration of the light-emitting device (10) to the illumination device (10a, 10b) of the corresponding subarray (11a, 11b), thereby generating sub-graphics (G1, G2, G3, G4) on the ground in the environment of the motor vehicle (1) by means of the projection of the target structure (13) of the projection optical system of the corresponding subarray (11a, 11b). The target structure (13) of the projection optical system is the same in a corresponding subarray (11a, 11b), but the target structure (13) of the projection optical system is distinguishable from each other in each subarray (11a, 11b). Its features are, - The controller (16) is designed to cause the projection module (7) to operate in a dynamic operating mode for a predetermined time period, in which the brightness (H) of at least some of the plurality of lighting devices (10a, 10b) automatically changes based on a predetermined sequence pattern (SM), wherein the predetermined sequence pattern (SM) for each of the at least some lighting devices (10a, 10b) describes the temporal variation (H1, H2, H3, H4) of the brightness (H) of the lighting device and the temporal variation (H1, H2, H3, H4) is at least partially distinguished between at least two lighting devices (10a, 10b) within the predetermined time period, such that a first sub-graph is generated by the first lighting device of the at least two lighting devices at a first moment. The second sub-graphic is generated by the second illuminator at a later second moment. The second sub-graphic overlaps with the first sub-graphic on the ground in the environment of the motor vehicle (1) and an enlarged overall graphic is generated by the first and second sub-graphics. The overall graphic extends further along the longitudinal direction of the motor vehicle relative to the first sub-graphic. The predetermined sequence pattern (SM) is designed such that the brightness (H) of the illuminators (10a, 10b) of the at least some illuminators (10a, 10b) changes at least partially in the predetermined sequence pattern (SM) by darkening, such that the first illuminator has a first brightness change process and the second illuminator has a second brightness change process, and the second brightness change process decreases from the first brightness value while the first brightness change process increases from the first brightness value, thereby generating the effect of a dynamically moving light carpet.

2. The motor vehicle according to claim 1, characterized in that, The temporal variations (H1, H2, H3, H4) are at least partially distinguished among all the lighting devices (10a, 10b) of the at least some lighting devices (10a, 10b) of the light-emitting device (10) within a predetermined time period.

3. The motor vehicle according to claim 1 or 2, characterized in that, The sequence pattern (SM) has a sequence pattern segment that repeats periodically over time.

4. The motor vehicle according to claim 1 or 2, characterized in that, The array (11) of projection optical systems is formed by four sub-arrays (11a, 11b) and / or each sub-array (11a, 11b) has between 30 and 40 projection optical systems.

5. The motor vehicle according to claim 1 or 2, characterized in that, The corresponding lighting devices (10a, 10b) consist of a single light source.

6. The motor vehicle according to claim 1 or 2, characterized in that, The corresponding lighting devices (10a, 10b) are composed of LED light sources or laser sources.

7. The motor vehicle according to claim 1 or 2, characterized in that, The start of a dynamic operating mode is coupled with at least one of the following events: - A user approaches a motor vehicle (1), wherein the user carries a wireless key for starting the motor vehicle (1); - Unlock the central locking device of the motor vehicle (1); - Open the entrance door of the motor vehicle (1); - Engage reverse gear in the motor vehicle (1).

8. The motor vehicle according to claim 1 or 2, characterized in that, The controller (16) is further designed to enable the projection module (7) to operate in a static operating mode for a predetermined time interval, in which at least a portion of the illumination devices (10a, 10b) of the light-emitting device (10) operates at a constant brightness and the brightness (H) of no illumination device (10a, 10b) changes.

9. The motor vehicle according to claim 1 or 2, characterized in that, One or more light-blocking objects (15) are provided in the projection module (7), the light-blocking objects are configured such that the light from the lighting devices (10a, 10b) of the corresponding subarrays (11a, 11b) is projected only onto the corresponding subarrays (11a, 11b).

10. The motor vehicle according to claim 1 or 2, characterized in that, The projection module (7) is installed in the area of ​​the entrance door (2, 2', 3, 3') of the motor vehicle (1) such that one or more of the sub-graphics (G1, G2, G3, G4) are generated in the opening area of ​​the entrance door.

11. The motor vehicle according to claim 10, characterized in that, The positions of the sub-graphics (G1, G2, G3, G4) are not changed or obscured by opening the access gates (2, 2', 3, 3').

12. The motor vehicle according to claim 10, characterized in that, The entrance doors (2, 2', 3, 3') are personnel entrance doors.

13. The motor vehicle according to claim 1 or 2, characterized in that, The projection module (7) is installed in the threshold (4) of the motor vehicle (1).

14. The motor vehicle according to claim 1 or 2, characterized in that, The projection module (7) is installed at the following location, which is located in front of the personnel entrance door along the longitudinal direction of the motor vehicle.

15. The motor vehicle according to claim 1 or 2, characterized in that, The projection module (7) is configured in the motor vehicle (1) such that the entirety of all the sub-graphics (G1, G2, G3, G4) on one side of the motor vehicle (1) extends substantially along the driver or co-driver entrance door and the entrance door for rear passengers located behind the driver or co-driver entrance door.

16. The motor vehicle according to claim 1 or 2, characterized in that, The overall graphic extends further rearward along the longitudinal direction of the motor vehicle relative to the first sub-graphic.

17. An ambient lighting device for a motor vehicle (1), said motor vehicle being a motor vehicle according to any one of claims 1 to 16, wherein, The ambient lighting equipment is configured to provide ground lighting in the environment of the motor vehicle (1) and has a controller (16) for controlling the lighting of the ground and a projection module (7), wherein: - The projection module (7) has a light-emitting device (10) including multiple lighting devices (10a, 10b) and an array (11) of projection optical systems, wherein each projection optical system includes a target structure (13) and a projection lens (14), so that when the corresponding projection optical system is illuminated by the light-emitting device (10), the target structure (13) is projected onto the ground through the projection lens (14); - The array (11) of the projection optical system has multiple subarrays (11a, 11b), each of which can be individually illuminated by the configuration of the light-emitting device (10) to the illumination device (10a, 10b) of the corresponding subarray (11a, 11b), thereby generating sub-patterns (G1, G2, G3, G4) on the ground in the environment of the motor vehicle (1) by means of the projection of the target structure (13) of the projection optical system of the corresponding subarray (11a, 11b). The target structure (13) of the projection optical system is the same in a corresponding subarray (11a, 11b), but the target structure (13) of the projection optical system is distinguishable from each other in each subarray (11a, 11b). Its features are, The controller (16) is designed to cause the projection module (7) to operate in a dynamic operating mode for a predetermined time period, in which the brightness (H) of at least some of the plurality of lighting devices (10a, 10b) automatically changes based on a predetermined sequence pattern (SM), wherein the predetermined sequence pattern (SM) for each of the at least some lighting devices (10a, 10b) describes the temporal variation (H1, H2, H3, H4) of the brightness (H) of the lighting device, and the temporal variation (H1, H2, H3, H4) is at least partially distinguishable between at least two lighting devices (10a, 10b) within the predetermined time period, such that a first sub-projection is generated by the first lighting device of the at least two lighting devices at a first moment. The pattern is generated by the second illuminator at a later second moment, and the second sub-pattern overlaps with the first sub-pattern on the ground in the environment of the motor vehicle (1) and an enlarged overall pattern is generated by the first and second sub-patterns, the overall pattern extending further along the longitudinal direction of the motor vehicle relative to the first sub-pattern, wherein the predetermined sequence pattern (SM) is designed such that the brightness (H) of the illuminators (10a, 10b) of the at least some illuminators (10a, 10b) changes at least partially in the predetermined sequence pattern (SM) by darkening, such that the first illuminator has a first brightness change process and the second illuminator has a second brightness change process, and as the first brightness change process increases from the first brightness value, the second brightness change process decreases from the first brightness value, thereby generating the effect of a dynamically moving light carpet.

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