Recreational vehicle, assembly and use of a ventilation system

Abstract

Recreational vehicle (100) comprising: - a window pane (2) that separates an interior area (IB) of the recreational vehicle (100) from an exterior area (AB) surrounding the recreational vehicle (100), - an image capture device (5) whose field of view is directed towards the window pane (100), and - an active ventilation device which generates an airflow during operation to counteract condensation in the field of view, wherein the image acquisition device (5) and the active ventilation device are arranged in a common assembly (10).

Description

[0001] The present invention relates to a recreational vehicle, an assembly and the use of a ventilation device.

[0002] Camera-based advanced driver assistance systems (ADAS) are increasingly used in modern vehicles, including motorhomes, for collision avoidance, lane keeping, traffic sign recognition, and other safety-related functions. The cameras are typically located behind the windshield in separate housings.

[0003] Existing solutions sometimes utilize heated lens zones with tungsten wires, silver printing, or heating films, as well as special ventilation openings in the camera mount or cover to remove condensation. However, these systems primarily consider the conditions in cars or trucks, i.e., vehicles with lower interior humidity. In motorhomes, the humidity is considerably higher due to cooking, sleeping, and generally more intensive use. Ventilation openings are usually insufficient to reliably prevent or quickly remove condensation. This regularly leads to obstructed camera views and consequently to malfunctions or temporary failures of the ADAS functions.

[0004] Heating films or windshield heaters can be a good standard solution, but are hardly feasible as a retrofit solution in existing systems. Such solutions alter the optical properties of the windshield within the camera's field of view, which in turn would necessitate very time-consuming and expensive re-testing for approval by the chassis suppliers.

[0005] One object of the present invention is to optimize the integration, in particular the retrofitting, of image acquisition devices in recreational vehicles with their specific challenges.

[0006] This problem is solved by a recreational vehicle according to claim 1, an assembly according to claim 15 and the use of a fan device according to claim 16. Further features can be found in the exemplary embodiments of the description, the figures and the dependent claims.

[0007] According to a first aspect of the present disclosure, a recreational vehicle comprises - a window pane that separates an interior area of ​​the recreational vehicle from an exterior area surrounding the recreational vehicle, - an image capture device whose field of view is directed towards the window pane, and - an active ventilation device which generates an airflow during operation to counteract condensation in the field of view, wherein the image acquisition device and the active ventilation device are arranged in a common assembly.

[0008] Active ventilation systems offer significant advantages for recreational vehicles, as their use as sleeping quarters, cooking areas, or for other intensive living activities results in considerably higher humidity levels than conventional vehicles. While passive ventilation openings are insufficient to address the increased risk of condensation in recreational vehicles, active ventilation systems generate a targeted airflow that goes beyond the mere presence of ventilation openings, enabling the rapid and energy-efficient removal of condensation from the windows.

[0009] This ensures the reliable availability of the image acquisition system even under the adverse climatic conditions that occur particularly in motorhomes due to cooking, sleeping, and generally more intensive use. The compact design also allows for easy retrofitting. A further advantage is that no additional measures to counteract condensation are required, which would impair the optical properties in the camera's field of view, such as the installation of heating wires. Therefore, no re-testing or homologation is necessary.

[0010] An image acquisition device generally refers to an optical sensor system for capturing and / or processing visual information from the environment. The field of view of the image acquisition device denotes the spatial area that can be captured by the device and used for imaging. The simplest and most common example of an image acquisition device is a camera used to capture images or video sequences. Other examples of image acquisition devices include infrared cameras for thermal imaging, stereo camera systems for three-dimensional image acquisition, lidar sensors for distance measurement using laser beams, time-of-flight cameras for depth sensing, night vision cameras with image intensification, and multispectral cameras for capturing different wavelength ranges.In driver assistance systems, these image capture devices are typically used for collision avoidance, lane guidance, sign recognition, pedestrian detection, traffic sign recognition, or blind spot monitoring.

[0011] In an image acquisition device in the form of a camera, the field of view corresponds to the angle of view or field of view, which is determined by the optical properties of the lens and the sensor size. The field of view is typically characterized by the horizontal and vertical opening angles and defines the maximum detection range of the image acquisition device at a given distance. In the context of driver assistance systems, the field of view is particularly critical, as it defines the area of ​​the window pane through which the image acquisition device performs its environmental perception. Condensation or contamination in this field of view area directly impairs or causes the image acquisition function to fail, which is why targeted ventilation of this area is particularly beneficial for the operational reliability of the system.

[0012] The window pane can be designed as the windshield or rear window of the recreational vehicle. It is also conceivable that a side window is equipped with a camera system. For the purposes of this disclosure, a recreational vehicle is a motor vehicle primarily designed and equipped for leisure, recreational, and vacation activities. Recreational vehicles are characterized by the fact that they have facilities for temporary or permanent living, sleeping, cooking, and / or personal hygiene. Typical examples of recreational vehicles include motorhomes, campervans, campervans, caravans, expedition vehicles, and mobile homes.These vehicles, due to their use as temporary living spaces, have a significantly higher indoor humidity than conventional passenger cars or commercial vehicles, as they are regularly used for cooking, sleeping and other typical residential activities that lead to increased water vapor production.

[0013] The airflow is preferably angled, particularly perpendicular, to the viewing direction of the image capture device. This prevents the airflow from being directed directly at the lens of the image capture device. Preferably, the airflow is not directed directly at the window pane or the lens of the image capture device. Preferably, the airflow is first directed at a component or wall from which it is reflected. Particularly preferably, the airflow is directed directly at the window pane. This allows any condensation to be removed more quickly. This ensures the most homogeneous possible effect on the humidity between the image capture device and the window pane.

[0014] Preferably, the active ventilation system should have an air flow rate of more than 8 m³ / h. 3The air flow rate indicates the amount of air circulated by the ventilation system and signifies that active ventilation is taking place, not passive ventilation such as that provided by a simple air vent. Specifically, this refers to ventilation systems that include mechanical components for active air movement. For example, an axial fan and / or a ventilation system with rotating blades to generate a targeted airflow. This ensures sufficient air movement to effectively prevent condensation. For instance, a single 40 mm diameter axial fan operating at 12V can achieve an air flow rate of approximately 8-12 m³ / h. 3 / h, while two parallel fans, each with a diameter of 30 mm, achieve a combined airflow of approximately 10-15 m³ / h. 3 / h can be achieved.

[0015] It is conceivable that an energy storage system is provided to supply power to the ventilation unit. It is also conceivable that the ventilation unit and the image acquisition unit share a common power supply. It is also conceivable that the ventilation unit is integrated into the dashboard and that ventilation is directed to the driver's field of vision via a corresponding duct.

[0016] According to one embodiment, the recreational vehicle includes a control device for regulating, and in particular activating, the active ventilation system. This enables demand-based control of the ventilation depending on the current climatic conditions. For example, the control device can include a manual switch in the cockpit, automatic sensors for detecting condensation or critical humidity levels using humidity, temperature, or optical sensors, or a control unit that switches on the fan based on measured values ​​or manual activation. For example, a humidity sensor, in particular an interior humidity sensor, provides a measured value for the control loop. If a threshold value is exceeded, the ventilation system can then be switched on to proactively counteract condensation in the driver's field of vision.Condensation should preferably be prevented on the window pane and / or a lens of the image acquisition device. For example, sensors detect humidity or another parameter relevant to condensation and compare it to a reference value to enable a control loop. Specifically, a temperature, such as indoor and outdoor temperature, is determined using a glass surface temperature sensor near the window pane. It is also conceivable that image analysis of data acquired by the image acquisition device is performed. The control loop can be operated based on changes in the captured images, reference images, and / or criteria such as sharpness, contrast, and / or fog level. For example, the ventilation system is switched off when desired image acquisition criteria are again detected.This data can, for example, act as a secondary trigger alongside a primary trigger that activates the ventilation system when a threshold is exceeded. It is also conceivable that the control loop could use information from a driver assistance system, such as the outside temperature, to activate the ventilation system when needed.

[0017] Furthermore, it is conceivable that the control loop depends on at least one environmental parameter, such as an outside temperature and / or an inside temperature. This allows the ventilation system to be switched on at the appropriate time. It is also possible to perform a dew point estimation and / or determine a hysteresis. Thus, if a temperature difference between the outside and inside temperatures exceeds or falls below a threshold, the ventilation system can be switched on or off.

[0018] Preferably, the control loop depends on several different controlled variables. Furthermore, integration with a control unit of the recreational vehicle is conceivable, which would automatically activate the ventilation system when an obstruction to visibility is detected. This shortens the degradation logic and allows for a faster return to normal operation.

[0019] It is also conceivable that the ventilation system could be activated via a human-machine interface (HMI), for example, in the driver's cockpit area. For instance, the ventilation system could be integrated into an on-board information system, so that the driver is informed about the maintenance status or condition of the ventilation system via a visual display.

[0020] According to one embodiment, the active ventilation device is designed such that an airflow is directed into a space between the window pane and the image acquisition device. This targeted airflow achieves optimal condensation prevention in the critical area of ​​the camera's field of view. For example, an airflow design can be provided that directs dry and / or warm air across the viewing window of the image acquisition device, with the airflow preferably traveling at a speed of 0.5 to 2.0 m / s across the pane surface.

[0021] According to one embodiment, the active ventilation system is designed and / or operated such that the noise level is below 23 dB, preferably below 20 dB, and particularly preferably below 16 dB. This ensures quiet operation that does not impair comfort in the vehicle. For example, special noise-optimized fans with sinusoidal commutation and optimized blade geometry can be used, or the ventilation system can be operated with various software profiles such as Eco / Silent / Boost modes, with the Silent mode providing a reduced speed for minimal noise generation. It is also conceivable that the ventilation system can only be controlled in such a way that the noise level is not exceeded, or that the ventilation system itself is not capable of generating higher noise levels.

[0022] According to one embodiment, the ventilation device comprises several ventilation units or fans. This design can be advantageously used to reduce the noise level. For example, two fans, each with a diameter of 30 mm, arranged side by side can be integrated into a common housing, or three smaller fans, each with a diameter of 25 mm, can be positioned in a triangular arrangement, whereby if one fan fails, the remaining units can maintain operation.

[0023] In particular, it is conceivable that, depending on the required airflow, only one fan or a fixed number of fans are switched on. This allows for a gradual increase in performance. It is also conceivable that the fans are arranged one behind the other in a direction parallel to the line of sight, and preferably that a corresponding fan is activated depending on the location of condensation. This allows for targeted, localized prevention of condensation, especially with minimal noise.

[0024] According to one embodiment, a filter is arranged in the airflow. This improves the quality of the supplied air and reduces contamination of the optical components. For example, a replaceable filter / desiccant cartridge with saturation monitoring via a humidity sensor can be provided, or a G3 or G4 class particle filter can be used to remove dust and other contaminants from the supply air. This advantageously prevents contamination caused by the ventilation system, particularly of the lens of the image acquisition device.

[0025] According to one embodiment, the image acquisition device and the ventilation device form the assembly by means of a mounting device. This integrated design enables a compact and efficient solution for preventing condensation. For example, the mounting device can be designed as a multi-part plastic housing with integrated air ducts, or as an aluminum die-cast part with molded-in mounting points for the fan and camera, as well as integrated cable routing. It is conceivable that the assembly could be installed in a housing within the recreational vehicle.

[0026] In particular, the ventilation device is arranged in the mounting device such that the generated airflow is directed towards a side wall of the mounting device, preferably a side wall that defines the space between the window pane and the image capture device. This side wall is opposite the ventilation device. At this side wall, especially the inner side wall, the airflow is preferably reflected first. Opposite this side wall is another side wall into which the ventilation device is integrated. For this purpose, the second side wall has at least one recess through which the airflow can be directed into the space between the panes.

[0027] The mounting bracket forms the central connecting element between the various components of the assembly and enables their precise positioning relative to the window pane. The integrated design of the mounting bracket results in a compact and stable construction that meets both the mechanical and fluidic requirements of the ventilation function. For example, the mounting bracket can be manufactured as a one-piece injection-molded part from ABS plastic with integrated reinforcing ribs, or as a two-part construction consisting of a base body and a removable cover for simplified assembly and maintenance.

[0028] According to one embodiment, the ventilation device is connected to the mounting device via a first interface, preferably reversibly, and / or the image acquisition device is connected via a second interface, preferably reversibly. The modular design allows for easy assembly, maintenance, and, if necessary, replacement of individual components. For example, bayonet fittings, snap connections, and / or screw connections can be used as reversible interfaces, with the first interface additionally having electrical contacts for power supply and control of the ventilation device.

[0029] According to one embodiment, the mounting device encloses the space between the window pane and the image capture device. This space is designed to limit the field of view of the image capture device, particularly in a plane perpendicular to the viewing direction of the image capture device. An exemplary volume for this space is given by the dimensions: 120 x 80 x 60 mm. The volume of this channel-like space can vary within a range of ±30% of the value specified by the dimensions, which are to be understood as an example.

[0030] According to one embodiment, the mounting device has a light-scattering area, particularly on a side facing the gap, with the first interface being located outside this area. This arrangement allows for optimal use of the light-scattering area. A ventilation device otherwise embedded in the light-scattering area would reflect light into the image acquisition device and negatively impair its functionality. For example, the light-scattering area can be designed as a structured surface with microscopic grooves or as a matte black coating with defined scattering properties, while the first interface is positioned laterally or above the optical path, particularly the gap, of the image acquisition device. Most preferably, the ventilation device is embedded in the mounting device on a side opposite the light-scattering area.

[0031] According to one embodiment, the first interface has a ventilation duct for directing and / or focusing the airflow. This enables targeted and efficient airflow onto the critical area of ​​the window pane. For example, the ventilation duct can be designed as a rectangular duct or as a double-duct system with two parallel oval ducts. The ducts can have a length of 20–40 mm. It is also conceivable that the ventilation duct has a funnel-shaped or channel-shaped geometry that concentrates the airflow specifically onto an area of ​​the window pane or the lens of the image capture device.

[0032] According to one embodiment, the ventilation duct is funnel-shaped, in particular tapering or widening towards the space between the panes. This geometric design allows for controlled acceleration or deceleration of the airflow and / or uniform distribution across the area of ​​the window pane to be ventilated. The funnel-shaped geometry reduces flow losses and optimizes the efficiency of condensation prevention. For example, a tapered funnel with an inlet diameter of 20 mm and an outlet width of 8 mm can be used to concentrate the airflow, or a widening funnel with an inlet diameter of 10 mm and an outlet width of 25 mm can be used for uniform surface ventilation, with the opening angle typically being between 15° and 45°.

[0033] Another aspect of the present disclosure relates to an assembly comprising an image acquisition device and a ventilation device for a recreational vehicle. All properties described for the recreational vehicle can be applied analogously to the assembly and vice versa. This assembly, for example, represents a pre-assembled unit that can be installed in the recreational vehicle as a whole. The modular design allows for easy maintenance and, if necessary, the replacement of individual components. For example, the assembly can be designed as a plug-and-play unit with standardized vehicle connectors, or as a compact unit with external dimensions of approximately 120 x 80 x 60 mm, which can be mounted on both the windshield and the rear window.

[0034] Another aspect of the present disclosure relates to the use of an active ventilation device, particularly for retrofitting, for ventilating a window in a recreational vehicle. All properties described for the recreational vehicle can be applied analogously to its use and vice versa. This application enables the retrofitting of existing driver assistance systems with active condensation prevention without requiring modifications to the window pane or its optical properties. The retrofit solution offers the advantage of quick and cost-effective implementation in existing systems, thereby significantly improving their operational reliability and availability. For example, the retrofit can be carried out by simply replacing the existing camera mount. Preferably, the mounting device is glued to the window pane.

[0035] Further advantages and features will become apparent from the following description of preferred embodiments of the present disclosure with reference to the accompanying figures. Individual features of the individual embodiments can be combined with one another within the scope of the present disclosure. Fig. Figure 1 shows a schematic representation of a recreational vehicle with a camera ventilation assembly. Fig. Figure 2 shows a perspective view of an assembly with a ventilation system. Fig. Figure 3 shows an exploded view of an exemplary first interface with ventilation duct for the assembly made of Fig. 2. Fig. Figure 4 shows a perspective view of an assembly with a ventilation system. Fig. Figure 5 shows different views of another exemplary first interface for the assembly. Fig. 4.

[0036] Fig. Figure 1 shows a schematic representation of a recreational vehicle 100 with an assembly 10 for ventilating an image acquisition device 5. The recreational vehicle 100 is shown, by way of example, with a window pane 2 that separates an interior area IB of the recreational vehicle 100 from an exterior area AB surrounding the recreational vehicle 100. The assembly 10 is arranged in the interior area IB of the recreational vehicle 100 and preferably comprises an image acquisition device 5, the field of view of which is directed towards the window pane 2. The image acquisition device 5 is preferably designed for a driver assistance system and is connected via a second interface 11 to a mounting device 15, which enables the mechanical fastening and positioning of the image acquisition device 5, particularly within the recreational vehicle 100, for example on the window pane 2 and / or on a body component of the recreational vehicle 100.

[0037] The assembly 10 preferably comprises a ventilation device 20, which is connected to the mounting device 15 via a first interface 21. The ventilation device 20 is designed to generate an airflow L during operation, which is directed specifically towards a channel-like space 30 between the image acquisition device 5 and the window pane 2 in the area of ​​the field of view of the image acquisition device 5. The airflow L is directed perpendicular to a viewing direction of the image acquisition device 5, in particular towards the space 30 between the image acquisition device 5 and the window pane 2. The airflow L is particularly preferably directed towards the window pane 2. This allows the condensate on the window pane 2 to be removed.This arrangement enables active ventilation of the channel-like space 30 between the window pane 2 and the image acquisition device 5, thereby counteracting condensation in the field of view of the image acquisition device 5. In an alternative arrangement to the embodiment shown, the assembly 10 can also be arranged on the windshield of the recreational vehicle 100. In the embodiment shown, the assembly 10 is arranged on the rear window.

[0038] The integration of the image acquisition device 5 and the ventilation device 20 into a common assembly 10 enables a compact and efficient solution for preventing condensation. The first interface 21 of the ventilation device 20 is positioned so that the generated airflow L is optimally directed onto the critical area between the window pane 2 and the image acquisition device 5. The channel-like space 30 limits the field of view of the image acquisition device 5 when installed. This arrangement ensures reliable operation of the image acquisition device 5 even under high humidity conditions in the interior IB of the recreational vehicle 100, such as those that occur particularly in motorhomes due to cooking, sleeping, and generally more intensive use.The design of the space 30 with the mounting device 15 also supports a demarcation from the interior of the recreational vehicle 100, which prevents moisture from entering the area between window pane 2 and image capture device 5.

[0039] The illustrated embodiment offers the advantage of rapid and energy-efficient removal of condensation from the window pane 2. The active airflow ensures the availability of the image acquisition device 5 even under adverse climatic conditions, which is particularly important for driver assistance systems. Furthermore, the modular design with the first interface 21 and the second interface 11 allows for easy installation and maintenance of the assembly 10, as well as its retrofitting into existing systems without altering the optical properties of the window pane 2.

[0040] Fig. Figure 2 shows a perspective view of an assembly 10 with a detailed representation of the design of the ventilation device 20 and its integration into the mounting device 25. The assembly 10 is shown in a perspective view, making the internal components and their arrangement visible. In particular, the mounting device 25 includes a base plate that is substantially inclined to the orientation of the image acquisition device 5 and / or the ventilation device 20. Specifically, a hole is integrated into the base plate, for example, to accommodate a component such as a windshield wiper and / or for cable routing.

[0041] The ventilation unit 20 is designed as a compact unit and comprises two (single) fans arranged side by side, integrated into a common housing. This dual-fan configuration enables increased airflow while simultaneously providing redundancy for improved operational reliability. In particular, the use of two fans proves advantageous because it reduces the noise level. Furthermore, the fans can be switched between to prevent overloading of one of them. The ventilation unit 20 is mechanically connected to the mounting device 25 via the first interface 21, which preferably allows for a detachable connection. The ventilation unit 20 can be equipped with manual control or automatic sensors that detect condensation on the pane 2 or critical humidity levels.In particular, it is intended that the ventilation system 20 is controlled by means of sensors and a control device, depending on a controlled variable, preferably several controlled variables, that are detected by the sensors. For example, the sensors detect humidity or another quantity relevant to condensation and compare it with a reference value in order to enable a control loop.

[0042] The mounting device 25 has a multi-part or one-piece construction that allows the mechanical mounting of the ventilation device 20. The channel-like space 30 is defined by the geometric design of the mounting device 25 and forms a controlled air channel between the window pane 2 and the image capture device 5, in which the airflow L is directed and preferably focused. The channel-like space 30 limits the field of view of the image capture device 5 when mounted. The second interface 11 for the image capture device 5 is located laterally on the mounting device 25 and enables precise positioning of the image capture device 5 relative to the window pane 2. In particular, when mounted, the image capture device 5 limits the channel-like space 30 on one side facing away from the window pane 2.

[0043] Furthermore, a light scattering area 35 is formed on the mounting device 25. This light scattering area 35 has a structured surface that reduces unwanted light reflections and thus improves the image quality of the image acquisition device 5. In the illustrated embodiment, this is a grooved structure. However, other reflective geometries are also conceivable, preferably resulting in diffuse scattering. The first interface 21 of the ventilation device 20 is deliberately positioned outside the light scattering area 35 in order not to adversely affect the positive effect of the light scattering area 35 on the image acquisition device 5.

[0044] The illustrated embodiment shows how the airflow L generated by the ventilation device 20 can be directed into the channel-like space 30. The airflow L is directed towards the window pane 2. The geometric design of the first interface 21 acts as a ventilation duct 27, which concentrates the airflow L and directs it towards the critical area of ​​the window pane 2. This arrangement enables efficient condensation prevention with minimal energy consumption and low noise levels. Optionally, the ventilation device 20 can be equipped with a filter and / or a dehumidification device, such as a desiccant cartridge.

[0045] The in Fig. The construction shown in Figure 2 offers the advantage of a modular design, in which both the ventilation unit 20 and the image acquisition unit 5 are connected via the first interface 21 and the second interface 11, respectively. This allows for easy installation, maintenance, and, if necessary, the replacement of individual components. The compact integration of all functional elements in the assembly 10 reduces installation effort and enables the retrofitting of existing systems without major modifications to the vehicle. The solution is particularly suitable as a retrofit solution for existing ADAS systems, as no changes to the window 2 are required.

[0046] Fig. Figure 3 shows an exploded view of the first interface 21 from Fig. 2 with ventilation duct 27. The illustration shows the modular construction of the first interface 21 and its special design for optimal airflow. The first interface 21 is characterized by the integrated ventilation ducts 27 and the possibility of mounting various ventilation devices 20.

[0047] The first interface 21 is designed as a separate component that establishes a mechanical and fluidic connection between the ventilation device 20 and the mounting device 25. The first interface 21 has a rectangular shape and is provided with fastening elements that enable a secure and detachable connection.

[0048] The ventilation duct 27 is designed as an integral part of the first interface 21 and is shown in detail in the lower exploded view. The ventilation duct 27 has a type of double-chamber geometry, which is divided into two separate airflow areas by a partially projecting partition. This design enables a uniform distribution of the airflow L and prevents turbulence that could impair the efficiency of the ventilation.

[0049] The two ventilation ducts 27 each have an oval cross-sectional geometry, ensuring optimal airflow. In their installed state, the ducts 27 taper towards the space 30, thereby accelerating the airflow L and focusing it precisely on the critical area of ​​the window pane 2. The inner walls of the ventilation ducts 27 have a smooth surface to minimize flow losses and ensure uniform air distribution.

[0050] The modular design of the first interface 21 with integrated ventilation duct 27 enables easy assembly and maintenance of the ventilation unit 20. The first interface 21 can be replaced as a wear part without having to disassemble the entire ventilation unit 20. This design offers the advantage of cost-effective maintenance and allows the airflow characteristics to be adjusted by exchanging different versions of the first interface 21 with different duct geometries.

[0051] The illustrated embodiment of the first interface 21 with ventilation duct 27 ensures optimal airflow with minimal pressure loss. The precise alignment of the ventilation ducts 27 ensures targeted airflow to the window pane 2 in the area of ​​the camera's field of view, thereby achieving efficient condensation prevention with low energy consumption.

[0052] Fig. Figure 4 shows a perspective view of an assembly 10 with a ventilation device 20 in an alternative embodiment, which differs from the one shown in Fig. The variant shown in Figure 2 differs by a modified arrangement of the ventilation unit 20. The assembly 10 is again shown in a perspective view, making the internal structure and the arrangement of the components visible.

[0053] Unlike the one in Fig. In the dual-fan configuration shown in Figure 2, the ventilation device 20 in this embodiment has a single, centrally located fan. This single fan is integrated into a compact housing and connected to the mounting device 25 via the first interface 21. The reduced number of fans allows for an even more compact design of the assembly 10, while simultaneously simplifying control and reducing energy consumption. Preferably, the fan is arranged closer to the image acquisition device 5 than to the window pane 2.

[0054] In this embodiment, the mounting device 25 exhibits an optimized geometry specifically tailored to the single-fan configuration. The channel-like space 30 is defined by the adapted shape of the mounting device 25 and enables targeted airflow guidance from the single fan to the window pane 2. The channel-like space 30 limits the field of view of the image acquisition device 5 when mounted. The second interface 11 for the image acquisition device 5 is positioned laterally on the mounting device 25 and ensures precise alignment of the image acquisition device 5 relative to the ventilated area of ​​the window pane 2.

[0055] In this embodiment, the light scattering area 35 is also formed on the mounting device 25, in particular on a side that defines the channel-like space 30. The structured surface of the light scattering area 35 reduces unwanted light reflections and improves the optical quality of the image acquisition.

[0056] The single-fan configuration generates a concentrated airflow L, which is directed precisely onto the critical area of ​​the window pane 2 by the geometric design of the mounting device 25. The airflow L is preferentially directed towards the window pane 2. This arrangement enables efficient condensation prevention with reduced energy consumption compared to multi-fan systems. The concentrated airflow L can achieve a higher local flow velocity if required, which is particularly advantageous in areas with a strong tendency to condense. The ventilation device 20 can be coupled with sensors for measuring the glass surface temperature or indoor humidity.

[0057] Fig. Figure 5 shows different views of the first interface 21. Fig. 4 in different forms of presentation. The Fig. Figure 5 illustrates the versatility and adaptability of the first interface 21 for various installation situations and ventilation requirements. The first interface 21 is characterized by the ventilation duct 27, which has a funnel shape. However, the size of the ventilation duct 27 widens towards the space 30. This allows for optimized ventilation distribution, especially when only one fan is used.

[0058] The in Fig.The embodiment of the first interface 21 shown in Figure 5 demonstrates the modular flexibility of the system. By exchanging the first interface 21, the airflow characteristics can be adapted to different vehicle types, installation situations, and climatic requirements without requiring modifications to the ventilation unit 20 or the mounting unit 25. This modularity enables cost-effective adaptation of the system to different applications and simplifies warehousing and maintenance. The various versions of the first interface 21 can be combined with time- and environment-dependent control strategies. Reference symbol list: 2 window panes 5 Image capture device 10 assembly 11 second interface 15 Mounting device 20 Ventilation equipment 21 first interface 25 Mounting device 27 Ventilation duct 30 space 35 Light scattering range 100 recreational vehicles AB Outdoor area IB Interior L Airflow

Claims

[1] Recreational vehicle (100) comprising: - a window pane (2) that separates an interior area (IB) of the recreational vehicle (100) from an exterior area (AB) surrounding the recreational vehicle (100), - an image capture device (5) whose field of view is directed towards the window pane (100), and - an active ventilation device which generates an airflow during operation to counteract condensation in the field of view, wherein the image acquisition device (5) and the active ventilation device are arranged in a common assembly (10). [2] Recreational vehicle (100) according to claim 1, wherein the active ventilation device (20) has an air flow rate of more than 3 m³ 3 / h, preferably more than 5 m 3 / h and especially preferably more than 8 m 3 / h [3] Recreational vehicle (100) according to one of the preceding claims, wherein the recreational vehicle (100) comprises a control device with which the active ventilation device (20) is controlled, in particular activated and / or deactivated. [4] Recreational vehicle (100) according to one of the preceding claims, wherein the active ventilation device (20) is designed such that an airflow (L) is directed into an intermediate space (30) between window pane (2) and image capture device (5). [5] Recreational vehicle (100) according to one of the preceding claims, wherein the active ventilation device (20) is designed and / or operable such that a noise level is below 23 dB, preferably below 20 dB and particularly preferably below 16 dB. [6] Recreational vehicle (100) according to one of the preceding claims, wherein the ventilation device (20) has several individual fans. [7] Recreational vehicle (100) according to one of the preceding claims, wherein a filter and / or an air dehumidification device is arranged in the airflow (S). [8] Recreational vehicle (100) according to one of the preceding claims, wherein the image acquisition device (5) and the ventilation device (20) form an assembly by means of a mounting device (25). [9] Recreational vehicle (100) according to claim 8, wherein the ventilation device (20) is connected to the mounting device (25) via a first interface (21), preferably reversibly, and / or the image acquisition device (5) is connected via a first interface (11), preferably reversibly. [10] Recreational vehicle (100) according to claim 8 or 9, wherein the mounting device (25) encloses the space (30) between window pane (2) and image capture device (5). [11] Recreational vehicle (100) according to one of claims 8 to 10, wherein the mounting device (25), in particular on a side facing the space (30), has a light scattering area (35), wherein the first interface (21) is arranged outside the light scattering area (35). [12] Recreational vehicle (100) according to one of claims 8 to 11, wherein the first interface (21) has a ventilation duct (27) for aligning and / or bundling the airflow (L). [13] Recreational vehicle (100) according to claim 12, wherein the ventilation duct (27) is funnel-shaped, in particular tapering or widening towards the space (30). [14] Mounting device (25) for an image capture device (5) and a fan device (20) for a recreational vehicle according to one of the preceding claims. [15] Assembly comprising an image acquisition device (5) and a fan device (20) for a recreational vehicle according to one of the preceding claims. [16] Using an active ventilation device (20), in particular for retrofitting, to ventilate a window in a recreational vehicle (100) according to one of the claims.

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