Cleaning device for an environmental detection device, and environmental detection device, and method for operating a cleaning device

Abstract

The invention relates to a cleaning device for an environmental detection device of a vehicle, wherein the cleaning device is designed to clean the environmental detection device in the area of the field of view of an observation pane, the cleaning device having a cleaning unit for treating the observation pane by means of a cleaning fluid and / or a squeegee element and / or compressed air, wherein the cleaning unit is coupled to a drive mechanism, the drive mechanism comprising a drive element in the form of a continuous rotary belt which is connected to the cleaning unit, wherein the belt is surrounded on at least one peripheral region, preferably on two opposite peripheral regions, extending in the longitudinal direction of the belt, by at least one protection element, while in each case forming a longitudinal duct on the upper side and / or the lower side of the belt.

Description

Technical Field

[0001] This invention relates to a cleaning device for an environmental monitoring apparatus for a vehicle, characterized by a cleaning function in the area of ​​the belt guide, enabling particularly reliable operation of the cleaning device. The invention also relates to a method for operating the cleaning device and an environmental monitoring apparatus for a vehicle having a cleaning device designed according to the invention. Background Technology

[0002] In the context of semi-autonomous or autonomous vehicles, environmental detection devices are known for detecting the vehicle's environment to enable safe driving operations. This type of environmental detection device is typically located in the roof area of ​​the vehicle and includes at least one sensor, such as a camera or lidar sensor, positioned behind the observation window. The observation window serves to protect the sensor while the vehicle is in motion. Furthermore, the observation window is typically susceptible to contamination due to its exposure during driving (e.g., due to precipitation, insects, etc.). To enable the vehicle to operate or detect the environment using sensors, despite the contamination of the observation window, this type of environmental detection device is known to be equipped with a cleaning device. The cleaning device may, for example, have a brush element in the form of a scraper blade, which is also used in a similar manner to clean vehicle windows. The scraper blade is moved to reciprocate along the observation window to clean the window or field of vision. If necessary, the scraper blade can also be combined with a spraying device to spray cleaning fluid onto the observation window. The element for cleaning the observation window is located on a cleaning unit attached to a continuously rotating belt. Since the belt is not completely protected from external environmental influences, it may become contaminated. To reduce the impact of such contaminants, it is also known to use cover elements or protective elements (such as labyrinth seals) to enclose the peripheral area of ​​the belt that is laterally positioned in the longitudinal direction, so as to ideally keep the contaminants away from the movement-related area of ​​the belt. Summary of the Invention

[0003] The cleaning device for an environmental monitoring device for a vehicle according to the invention, having the features of claim 1, has the advantage that it can remove contaminants or impurities that may appear in the lateral housing area of ​​the belt, and thus enables the cleaning device to operate reliably throughout the operating time of the environmental monitoring device.

[0004] The present invention is based on the concept of cleaning the laterally enclosed peripheral area of ​​a belt by means of a cleaning medium, particularly a cleaning fluid and / or compressed air, wherein the cleaning medium is specifically introduced into a longitudinal conduit that laterally surrounds the corresponding peripheral area of ​​the belt.

[0005] Against the background explained above, the cleaning device for an environmental monitoring apparatus for a vehicle, having the features of claim 1, is therefore designed such that the cleaning device includes a cleaning unit for treating the observation window by means of a cleaning fluid and / or a scraping element and / or compressed air, wherein the cleaning unit is coupled to a drive mechanism. The drive mechanism includes a drive element in the form of a continuously rotating belt connected to the cleaning unit. Furthermore, the belt is surrounded by at least one protective element in at least one peripheral region extending along the longitudinal direction of the belt, preferably in two opposite peripheral regions, while forming a longitudinal conduit on the upper and / or lower side of the belt in each case. Finally, means for supplying a cleaning medium, particularly a cleaning fluid, into the at least one longitudinal conduit is provided. Additionally, it is mentioned that the protective element surrounding the peripheral region of the belt is a protective element consisting of a single component, or a protective element consisting of, for example, multiple components connected or adjacent to each other.

[0006] Advantageous improvements to the cleaning device for an environmental identification device for vehicles according to the invention are described in the dependent claims.

[0007] To achieve the best possible protection of the belt's periphery from contaminants, at least one protective element is provided that wraps around the belt in a U-shape around the periphery.

[0008] In particular, when using a cleaning fluid as the cleaning medium, it is advantageous or necessary to discharge the cleaning medium from the longitudinal conduit or the area of ​​the cleaning device (discharge it into the environment). To achieve this, the cleaning device is provided with a collection container disposed below at least one protective element and designed to collect the cleaning medium escaping from the at least one protective element, and optionally to collect contaminants.

[0009] Regarding the supply of cleaning media to the longitudinal conduit, two different variations are proposed according to the invention. In the first variation, an apparatus for supplying cleaning media to the longitudinal conduit is provided, comprising a pump device for the cleaning fluid, and the pump device is connected to a supply line, particularly a hose, which leads directly into the longitudinal conduit. In this case, the supply location or the nozzle of the supply line in the longitudinal conduit can be selected at different points, or at multiple points simultaneously. Only if necessary, all relevant points in the longitudinal conduit requiring cleaning can be flushed with cleaning fluid through the supply line.

[0010] In a preferred second variant, the cleaning unit is also designed as a means of supplying cleaning media into the longitudinal conduit. This design allows for a particularly compact construction of the cleaning device with few (additional) components and avoids the need for at least one separate supply line (or hose) for supplying cleaning fluid into the longitudinal conduit.

[0011] The final proposed improvement provides that the cleaning unit has at least one spray nozzle for supplying cleaning fluid as a cleaning medium, wherein the at least one spray nozzle and the longitudinal conduit are capable of being supplied with cleaning fluid through at least one liquid conduit formed in the cleaning unit.

[0012] In particular, it may also be provided that a valve element for blocking or releasing cleaning fluid in the direction of the longitudinal conduit is disposed in a supply conduit that branches off from the liquid conduit in the direction of the longitudinal conduit. This type of valve element is used to activate the cleaning mode of the longitudinal conduit in a targeted manner, or to prevent cleaning fluid from entering the longitudinal conduit in the event of undesirable cleaning.

[0013] Furthermore, it is particularly preferred that the valve element releases the supply line in the parking position of the cleaning unit and closes the supply line in a position other than the parking position to clean the observation window. This is preferably performed by a spring element combined with a stationary stop, enabling mechanical forced opening and mechanical forced closure of the supply line in a position other than the parking position for cleaning the observation window. This means that the cleaning mode is performed solely by activating the cleaning fluid supply (via a pump).

[0014] Regardless of the specific construction of the device for supplying cleaning media into the longitudinal conduit, it is advantageous that the cleaning unit in its parked position is covered by a cover element disposed at a small distance from the upper side of the cleaning unit, and which is laterally positioned next to the field of view of the observation window when viewed in the direction of movement of the cleaning unit. When the cleaning unit is not in operation, this protects the components used to apply the cleaning media (jet nozzles and compressed air nozzles) from contamination.

[0015] The invention also includes a method for operating the cleaning device just described, and is distinguished in that, starting from the parking position of the cleaning unit, the cleaning unit for cleaning the longitudinal pipe moves in a first direction to release the supply pipe, and is distinguished in that, in order to clean the field of view of the observation window, the cleaning unit moves in a second direction opposite to the first direction.

[0016] Furthermore, the present invention also includes an environmental detection device for a vehicle having a cleaning device described herein and designed according to the present invention.

[0017] Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments of the invention and with the aid of the accompanying drawings. Attached Figure Description

[0018] [ Figure 1 The previous view shows a schematic illustration of a cleaning device for an environmental monitoring system used in vehicles. [ Figure 2 [This shows the passage according to [] Figure 1 A simplified cross-sectional diagram of a cleaning device and an environmental monitoring device. [ Figure 3 The image shows the results based on […]. Figure 2 The cross-sectional diagram shows that the cleaning fluid has been modified to be supplied to the cleaning device. [ Figure 4 ]、[ Figure 5 ]and[ Figure 6 A simplified cross-sectional diagram is shown based on... Figure 2 and Figure 3 The sub-areas of the designed cleaning device are used to explain the cleaning function, and [ Figure 7 A perspective view of an environmental monitoring device with a cleaning apparatus, including a scraper blade, is shown. Detailed Implementation

[0019] The same elements or elements with the same function in the figure are represented by the same reference numerals.

[0020] exist Figure 1 and Figure 2 The cleaning device 10 (not shown) for an environmental detection device 100 for a vehicle is illustrated in a highly simplified manner. The environmental detection device 100 is used to enable partial or autonomous operation of the vehicle. For this purpose, the environmental detection device 100, typically located in the roof area of ​​the vehicle, has a housing 101 for housing a sensor 102 (illustrated only), such as a lidar sensor 103. The housing 101 has an observation pane 104 in the direction of the detection range of the lidar sensor 103, which has a field of view 105 for the sensor 102. The rectangular field of view 105 is transparent to the wavelength of the sensor 102 to allow the sensor 102 to detect the vehicle's environment.

[0021] The environmental detection device 100 designed in this way is known in the prior art. In addition, it is mentioned that the environmental detection device 100 (e.g., instead of the lidar sensor 103) additionally or alternatively has an image recording camera or another sensor element to detect the environment.

[0022] When viewed in the direction of travel in front of the housing 101, the cleaning device 10 is positioned below the cover element 12 and at a small horizontal distance from the observation pane 104 or observation window 105.

[0023] The cleaning device 10 can also be housed within a housing not shown. The cleaning device 10 has a drive mechanism 14. The drive mechanism 14 includes a drive element 16 in the form of a belt 20, which is continuously guided around two idler pulleys 17, 18. One idler pulley 17 is coupled to a rotary reversible drive motor in the form of an electric motor 22 for driving the belt 20. A cleaning unit 26 is disposed between the upper lead 23 and the lower lead 24 of the belt 20, in the area between the two idler pulleys 17, 18, and can move reciprocally in the direction of a double arrow 25. The belt 20 not only drives or moves the cleaning unit 26 but also protects the interior of the drive mechanism 14 from dust, leaves, etc., ensuring the mechanical function of the drive mechanism 14. The cleaning unit 26 is connected to the belt 20 on the underside of the upper lead 23. The belt 20 has at least one gap 27 on the side facing the cleaning unit 26 to allow compressed air DL and cleaning fluid RF to be distributed to the observation window 104.

[0024] Set within the cleaning unit 26 (e.g., block-shaped) are at least one compressed air nozzle 28 and at least one spray nozzle 30. The at least one compressed air nozzle is used to impinge compressed air DL onto the viewing window 104 at least within the area of ​​the field of view 105, and the at least one spray nozzle is used to spray cleaning fluid RF onto the viewing window 104. The compressed air nozzle 28 and / or spray nozzle 30 may be formed as separate components or preferably formed from holes in the cleaning unit 26, as will still be... Figure 4 and Figure 5 The supply of compressed air DL and cleaning fluid RF is, in their respective cases, made by means of (flexible) hoses 32, 34, which connect the cleaning unit 26 to the compressed air source 36 or pump device 38, which in turn delivers the cleaning fluid RF to the storage container that has never been exposed under increased pressure.

[0025] [ Figure 1 The image shows the parking position of the cleaning unit 26, in which it is positioned near the idler wheel 17 and laterally towards the field of view 105 of the observation window 104. In this parking position, the cleaning unit 26 is covered by a cover element 12 that extends at small intervals above it. Specifically, in this parking position, the outlet areas of the compressed air nozzles 28 and 30, as well as the cleaning unit 26, are also configured to be integrally protected from contaminants.

[0026] exist[ Figure 2The image shows a cleaning unit 26 during the cleaning of the viewing window 105. During cleaning, the cleaning unit 26 moves reciprocally within the area of ​​the viewing window 105 of the viewing window 104 to allow the viewing window 105 to be impacted with compressed air DL or cleaning fluid RF. For this purpose, the cover element 12 has a slotted gap 40 formed along the viewing window 105. The rectangular gap 40 covers the upper side of the upper lead 23 of the belt 20 on two opposing peripheral regions 42, 44 extending in the longitudinal direction of the belt 20. The lower sides of the two peripheral regions 42, 44 are covered by profile strips 46, 48. The profile strips 46, 48 are formed as, for example, extruded plastic material parts and have a three-quarter circular cross-section outside the peripheral regions 42, 44. The profile strips 46, 48 are joined (e.g., adhesively bonded) to the lower side of the cover element 12. The cover element 12 and the profile strips 46, 48 together form a common protective element 50 in the area of ​​the gap 40.

[0027] Additionally, it is mentioned that the cover element 12 and the profile strips 46 and 48 can also be formed from a single integral component.

[0028] Perpendicular to [in their respective cases] Figure 2 The longitudinal pipes 52 and 54 extending from the drawing plane are formed by the cover element 12 and the profile strips 46 and 48 in the peripheral areas 42 and 44. Contaminants (or liquids) introduced from the upper side of the upper lead 23 through the peripheral areas 42 and 44 can accumulate in these longitudinal pipes. Such contaminants may negatively affect the safe operation of the cleaning device 10 or the drive mechanism 14.

[0029] To remove this contaminant from the areas of longitudinal ducts 52 and 54, two different solutions are described below, the highlight of which is that longitudinal ducts 52 and 54 can be cleaned by introducing a cleaning medium, particularly a cleaning fluid RF (or alternatively, additionally compressed air DL).

[0030] exist Figures 4 to 6 In the embodiment of the cleaning device 10 shown, the cleaning unit 26 is also configured as a device 60 for supplying a cleaning medium (currently an example using cleaning fluid RF) to two longitudinal conduits 52, 54. For this purpose, the cleaning unit 26 has an air conduit 62 for compressed air DL on one side and a liquid conduit 64 for cleaning fluid RF on the other. The outlet of the air conduit 62 facing the observation window 104 forms a compressed air nozzle 28, while an insert 66 is used to form a jet nozzle 30 in the outlet of the liquid conduit 64. At least one supply conduit 68 branches off from the liquid conduit 64 below the insert 66. The supply conduit 68 is designed to deliver the cleaning fluid RF to the longitudinal conduits 52, 54 parallel to the longitudinal conduits 52, 54. Figure 4 and Figure 5The area extending from the drawing plane. For this purpose, the longitudinal pipes 52, 53 have, for example, a supply port 70 on the side facing the outlet of the supply pipe 68, which is located in the cleaning unit 26 ([ Figure 4 The clean position of the ]) has a connection to the supply pipe 68.

[0031] In order to introduce cleaning fluid RF into longitudinal pipes 52, 53 according to the location of cleaning unit 26 Figure 4 ]) or introduced into the spray nozzle 30 for cleaning the field of view 105 ([ Figure 6 In the cleaning unit 26, a transverse hole 72 is provided. This transverse hole is formed as a blind hole and crosses the liquid pipe 64 above the branch to the supply pipe 68, and also crosses the supply pipe 68. A valve element 74 is inserted into the transverse hole 72 and is impacted by the force of a compression spring 76. The end side of the valve element 74 formed on the side away from the compression spring 76 interacts with the stationary stop 78 against the spring force of the compression spring 76 in the resting position of the cleaning unit 26. This blocks the liquid pipe 64 in the direction of the spray nozzle 30 and simultaneously releases the passage of cleaning fluid RF in the direction of the longitudinal pipes 52, 54. Figure 4 ]).

[0032] [ Figure 5 The image shows the position of the cleaning unit 26 in its parking position, where the cleaning unit 26 is positioned from […]. Figure 4 The position for introducing cleaning fluid RF along the longitudinal pipes 52, 54, as shown in the diagram, is moved to the right, such that valve element 74 closes supply pipe 68 due to the spring force of compression spring 76, and valve element 74 is positioned at a (small) distance from stop 78 and does not come into contact with stop. In the parked position, cleaning unit 26 is covered by cover element 12 at least in the area of ​​spray nozzle 30.

[0033] [ Figure 6 The image shows the cleaning position of the cleaning unit 26 for supplying compressed air DL or cleaning fluid RF to the field of view 105 of the observation window 104. [...and...] Figure 5Compared to the parking position, the cleaning position of the cleaning unit 26 is characterized by the fact that the cleaning unit 26 has been moved further to the right, so that the spray nozzle 30 and the air duct 62 are no longer protected or covered by the cover element 12. In both the cleaning and parking positions, the compression spring 76 pushes the valve element 74 to a position where the supply duct 68 leading to the longitudinal ducts 52, 54 is blocked, and the liquid duct 64 in the direction of the spray nozzle 30 is released. Therefore, the configuration of the cleaning unit 26 with valve element 74 and compression spring 76 described so far causes the supply duct 68 to be mechanically forced open or forced closed in the direction of the longitudinal ducts 52, 54 depending on the position of the cleaning unit 26, wherein three positions of the cleaning unit 26 are provided: the (first) cleaning position of the longitudinal ducts 52, 54 ([ Figure 4 ]), parking location ([ Figure 5 ]), and the (second) clean position of the field of view 105 of the observation window 104 ([ Figure 6 The difference between these three positions lies in their different positions relative to the stop 78 and the cover element 12.

[0034] [ Figure 3 The image shows cleaning device 10a, which is related to... Figure 1 , Figure 2 and Figures 4 to 6 Compared to the modified cleaning unit 26a, which is only symbolically displayed, the distinguishing feature of the cleaning device 10a is the device 60a. Device 60a includes at least one hose 80 connected to a pump device 82, which is preferably separate from the pump device 38, to directly deliver the cleaning fluid RF to the areas of the longitudinal conduits 52, 54. According to […] Figure 3 In the embodiments described above, cleaning of the longitudinal pipes 52, 54 can also be performed during the cleaning of the observation window 104 or the field of view 105.

[0035] To allow cleaning fluid RF and contaminants located in the longitudinal pipes 52 and 54 to be discharged from the area of ​​the cleaning devices 10 and 10a, a collection container 84 is provided below the protective element 50. This collection container is only used for […]. Figure 1 As shown in the image and, for example, in the shape of a basin, the collection container is capable of discharging clean liquid RF or contaminants at a defined location through an outlet 86.

[0036] The operation of cleaning devices 10 and 10a is explained as follows: During cleaning of the observation window 104 or the field of view 105, cleaning units 26 and 26a move back and forth between two positions in the area of ​​the gap 40 of the cover element 12, in which the field of view 105 of the observation window 104 can be impacted by cleaning fluid RF or compressed air DL. When cleaning of the observation window 104 or the field of view 105 is completed, cleaning unit 26... Figure 1 and Figure 5 The diagram shows the movement to its parking position. If cleaning of the longitudinal pipes 52 and 54 is to be performed, the cleaning unit 26 is adjusted to […]. Figure 4 The location is shown in the image. Then, in the area of ​​the longitudinal pipes 52, 54, the cleaning medium, conveyed under pressure, and contaminants, etc., subsequently pass through the collection container 84 and the outlet 86 and leave the area of ​​the cleaning device 10. In the case of the cleaning device 26a, on the other hand, the cleaning fluid RF can be introduced into the longitudinal pipes 52, 54 at any time. However, preferably, this does not occur when cleaning the observation window 104, but rather in the location of the cleaning device 26a protected by the cover element 12.

[0037] at last,[ Figure 7 The image shows an environmental monitoring device 100a with a cleaning unit 10b, in which a continuous rotary belt 20a is guided around four idler pulleys 88 to 91. A cleaning unit 95 is fastened to the belt 20a, which supports a scraper arm with a scraper element 96 on the side facing the field of view 105. When viewed in the direction of travel, the belt 20a, positioned above the field of view 105, is surrounded in its opposite peripheral area by two protective elements 97, 98 in the form of profile strips, each protective element having a U-shaped cross-section. Here, the supply of cleaning fluid RF to the protective elements 97, 98 can also be made through the cleaning unit 95, or by directly and individually supplying it to the area of ​​the protective elements 97, 98.

[0038] The cleaning devices 10, 10a, 10b or environmental monitoring devices 100, 100a described herein can be modified or altered in various ways without departing from the spirit of the present invention.

[0039] List of reference numerals 10. a, b Cleaning devices 12 Cover Components 14 Drive mechanism 16 Driving elements 17. Idle wheel 18 Idle Gear 20. a. Belt 22 Electric motors 23. Top lead wire 24 Lower lead wire 25 Double arrows 26. a Cleaning Unit 27 gap 28 Compressed air nozzle 30 spray nozzles 32 Hose 34 Hose 36 Compressed air source 38 Pump Unit 40 gap 42 Surrounding Area 44 Surrounding Area 46 Profile Strip 48 profile strip 50 Protective Components 52 Longitudinal Pipeline 54. Longitudinal pipes 60a device 62 Air ducts 64 Fluid Pipelines 66 Inserts 68 Supply Pipeline 70 supply ports 72 transverse holes 74 Valve Components 76 Compression Springs 78 Stop component 80 Hose 82 Pump Unit 84 Collection Container 86 Discharge outlets 88 Idler Gear 89 Idle Gear 90 idler wheel 91 Idle Gear 95 cleaning units 96 Scraper elements 97 Protective Components 98 Protective Components 100.a Environmental monitoring device 101 Casing 102 Sensors 103 LiDAR Sensor 104 View Window 105 Field of View DL compressed air RF cleaning fluid.

Claims

1. A cleaning device (10; 10a; 10b) for an environmental monitoring device (100; 100a) for a vehicle, wherein, The cleaning device (10; 10a; 10b) is designed to clean the environmental detection device (100; 100a) in the field of view (105) of the observation window (104). The cleaning device has a cleaning unit (26; 26a; 95) for treating the observation window (104) by means of cleaning fluid (RF) and / or a scraper element (96) and / or compressed air (DL). The cleaning unit (26; 26a; 95) is coupled to a drive mechanism (14) comprising a continuously rotating belt (20; 20b) connected to the cleaning unit (26; 26a; 95). a) a drive element (16) wherein the belt (20; 20a) is surrounded by at least one protective element (50; 97, 98) on at least one peripheral region (42, 44) extending in the longitudinal direction of the belt (20; 20a), preferably on two opposite peripheral regions (42, 44), while forming a longitudinal conduit (52, 54) on the upper and / or lower side of the belt (20; 20a) in each case, and the cleaning device has means (60; 60a) for supplying cleaning media, in particular cleaning fluid (RF), to the at least one longitudinal conduit (52, 54).

2. The cleaning device according to claim 1, characterized in that, The at least one protective element (50; 97, 98) surrounds the belt (20; 20a) in a U-shape over the peripheral area (42, 44).

3. The cleaning device according to claim 1 or 2, characterized in that, The cleaning device (10; 10a; 10b) has a collection container (84) disposed below the at least one protective element (50; 97, 98) and designed to collect water from the at least one protective element (50; 97, 98). 97, 98) Escaped cleaning media and optional collection of contaminants.

4. The cleaning device according to any one of claims 1 to 3, characterized in that, The device (60a) for supplying the cleaning medium to the longitudinal conduits (52, 54) includes a pump device (82) for the cleaning fluid (RF) as the cleaning medium, and is characterized in that the pump device (82) is connected to a supply line, in particular a hose (80), which leads directly to the longitudinal conduits (52, 54).

5. The cleaning device according to any one of claims 1 to 3, characterized in that, The cleaning unit (26) is also designed as a device (60) for supplying the cleaning medium to the longitudinal conduits (52, 54).

6. The cleaning device according to claim 5, characterized in that, The cleaning unit (26) has at least one spray nozzle (30) for supplying cleaning fluid (RF) as a cleaning medium, wherein the at least one spray nozzle (30) and the longitudinal pipes (52, 54) are capable of being supplied with the cleaning fluid (RF) through at least one liquid pipe (64) formed in the cleaning unit (26).

7. The cleaning device according to claim 6, characterized in that, A valve element (74) for blocking or releasing the cleaning fluid (RF) in the direction of the longitudinal conduits (52, 54) is provided in a supply conduit (68) that branches off from the liquid conduit (64) in the direction of the longitudinal conduits (52, 54).

8. The cleaning device according to claim 7, characterized in that, The valve element (74) releases the supply pipe (68) for the longitudinal pipes (52, 54) in the cleaning position of the cleaning unit (26), and closes the supply pipe (68) in the parking position and the additional cleaning position for cleaning the field of view (105) of the observation window (104).

9. The cleaning device according to claim 8, characterized in that, The cleaning unit (26; 26a) is covered by a cover element (12) at the parking position and the cleaning position for the longitudinal pipes (52, 54), and is characterized in that the cover element (12) is disposed at a small distance from the upper side of the cleaning unit (26; 26a), and when viewed in the direction of movement of the cleaning unit (26; 26a), the cover element is laterally disposed next to the field of view (105) of the observation window (104).

10. A method for operating a cleaning apparatus designed according to claim 7 or 8, characterized in that, Starting from the parking position of the cleaning unit (26), the cleaning unit (26) for cleaning the longitudinal pipes (52, 54) moves in a first direction to release the supply pipe (68), and is characterized in that, in order to clean the field of view (105) of the observation window (104), the cleaning unit (26) moves in a second direction opposite to the first direction.

11. An environmental detection device (100; 100a) for a vehicle, the environmental detection device having a cleaning device (10; 10a; 10b) designed according to any one of claims 1 to 9.

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