Blade and wiping device, method for spraying a fluid and vehicle

Abstract

The invention relates to a blade for wiping a glazed surface, the blade extending in a longitudinal direction and comprising: at least one channel (22) for circulating fluid for cleaning the glazed surface, the channel (22) being capable of being supplied with pressurised cleaning fluid; at least one nozzle (24) for spraying the cleaning fluid, the nozzle being at one end of the blade and being capable of being supplied with cleaning fluid via the channel (22) for circulating cleaning fluid; a valve (26) capable of opening or closing the supply of fluid to the nozzle (24), according to the pressure of the cleaning fluid in the channel (22). The invention also relates to a wiping device, a method for spraying fluid and a vehicle. The invention makes it possible to clean an optical surface near the glazed surface.

Description

A broom and wiping device, a fluid projection method and a vehicle Field of invention

[0001] The invention relates to a wiper blade for wiping a glass surface, a device for wiping the glass surface, a method for spraying cleaning fluid and a vehicle. State of the art

[0002] The optical position sensors that are now fitted to a large number of motor vehicles are designed to collect information about the vehicle's surroundings, in particular to provide the driver with assistance in driving and / or maneuvering the vehicle. For this purpose, an optical sensor is commonly installed on the vehicle to collect information about the vehicle's surroundings, such as the front environment.

[0003] The sensor is, for example, installed in an area at the interface between the windshield and the roof of the vehicle. However, the optical surface of such a sensor is particularly exposed to contamination such as dirty water, dust or other types of projections. Such contamination forms an obstacle to the transmission and reception of information and can disrupt the operation of the sensor, or even make it impossible to operate.

[0004] There is therefore a need to clean the optical surface of an optical element in an area at the interface between the windshield and the roof of the vehicle effectively.

[0005] The aim of the invention is to provide a solution for cleaning the optical surface of a sensor positioned in an area at the interface between a glass surface and the roof of the vehicle in an efficient manner.

[0006] For this purpose, the invention proposes a wiper blade for wiping a glass surface, the blade extending in a longitudinal direction.

[0007] According to the invention, the wiper comprises, along the wiper, at least one channel for circulating fluid for cleaning the glass surface, the channel being capable of being supplied with cleaning fluid under pressure; at least one nozzle for projecting the cleaning fluid, the nozzle being at one end of the wiper and capable of being supplied with cleaning fluid by the cleaning fluid circulation channel; and a valve, capable of opening or closing the supply of fluid to the nozzle, depending on the pressure of the cleaning fluid in the channel.

[0008] Such a broom is advantageous in that it allows the cleaning of two different surfaces, or alternatively two different regions of the same surface, without having to provide two independent cleaning systems. The selection of the nozzle that projects the cleaning fluid is a simple matter of modulating the fluid pressure.

[0009] According to one aspect of the invention, the valve is adapted to open the fluid supply to the nozzle when the pressure of the cleaning fluid in the channel is greater than a threshold pressure and is adapted to close the fluid supply to the nozzle when the pressure of the cleaning fluid in the channel is less than the threshold pressure.

[0010] According to one aspect of the invention, the nozzle is capable of projecting the cleaning fluid in the extension of the longitudinal direction of the brush or in an inclined manner relative to the longitudinal direction of the brush, preferably transversely to the longitudinal direction of the brush.

[0011] According to a variant of the invention, the valve comprises an elastic member urging a sealing element, the sealing element being capable of opening or closing the fluid supply to the nozzle depending on the pressure in the channel, preferably, the sealing element being capable of opening the fluid supply to the nozzle when the pressure in the channel is greater than a stiffness of the elastic member, and closing the fluid supply to the nozzle when the pressure in the channel is less than a stiffness of the elastic member.

[0012] According to another variant of the invention, the valve comprises a membrane with at least one opening, the opening being open when the pressure of the cleaning fluid in the channel is above a threshold pressure, and closed when the pressure of the cleaning fluid is below the threshold pressure.

[0013] Preferably, the at least one opening is a continuous slit or a series of perforations.

[0014] According to one aspect of the invention, the wiper further comprises covers at the ends of said wiper, the nozzle and the valve being in one of the covers.

[0015] The invention also provides a device for wiping the glass surface, comprising a blade as described above.

[0016] According to one aspect of the invention, in the wiping device, the wiper is movable from a rest position to an extreme position and vice versa, and the valve is capable of opening the fluid supply to the nozzle according to a certain stroke of the wiper before reaching and / or after reaching the extreme position, the pressure of the cleaning fluid in the channel being greater than the threshold pressure.

[0017] Preferably, in the wiping device the wiper comprises, along its longitudinal direction, orifices for projecting cleaning fluid onto the glass surface and two channels for circulating fluid for cleaning the glass surface, one of the channels, from the rest position to the extreme position, being capable of supplying some of the orifices as well as the nozzle beyond a certain stroke of the wiper, and the other of the channels, from the extreme position to the rest position, being capable of supplying the other orifices.

[0018] The invention also proposes a method for projecting cleaning fluid onto an optical surface, comprising a step of providing the device as described above, the wiper being movable from a rest position to an extreme position and vice versa; a step of opening the fluid supply to the nozzle along a certain stroke of the wiper before reaching and / or after reaching the extreme position, the pressure of the cleaning fluid in the channel being greater than the threshold pressure; and a step of projecting cleaning fluid onto the glass surface and onto the optical surface after opening the fluid supply to the nozzle.

[0019] The invention also provides a vehicle with a direction of travel, comprising a front glazed surface; an optical surface downstream of the glazed surface; and a device for wiping the glazed surface as described above, the device being capable of projecting cleaning fluid towards the optical surface through the nozzle depending on the pressure of the cleaning fluid in the channel.

[0020] Preferably, the wiper blade is in front of the front passenger seat of the vehicle.

[0021] According to one aspect of the invention, the vehicle further comprises a LIDAR device, the optical surface being the optical surface of the LIDAR device.

[0022] All of the preferred embodiments and all of the advantages of the wiper blade according to the invention are transposed mutatis mutandis to the present wiping device, to the cleaning fluid projection method and to the vehicle, and vice versa. The different embodiments can be taken in combination or considered in isolation. Brief description of the figures

[0023] Other characteristics and advantages of the present invention will appear on reading the detailed description which follows, for the understanding of which reference will be made to the appended figures which show:

[0024] , is a schematic view of a vehicle front end;

[0025] , is a view of an exemplary embodiment of the invention;

[0026] , is another view of the example of the ;

[0027] , is a view of another exemplary embodiment of the invention;

[0028] , is another view of the example of the ;

[0029] , is a view of another exemplary embodiment of the invention;

[0030] , this is another view of the example of the.

[0031] The drawings of the figures are not to scale. Like elements are generally denoted by like references in the figures. For the purposes of this document, identical or similar elements may bear the same references. Furthermore, the presence of reference numbers or letters in the drawings cannot be considered as limiting, including when these numbers or letters are indicated in the claims. Detailed description

[0032] The invention provides a wiper blade for wiping a glass surface. The blade extends in a longitudinal direction and comprises, along the wiper blade, at least one channel for circulating fluid for cleaning the glass surface, the channel being capable of being supplied with cleaning fluid under pressure. The blade also comprises at least one nozzle for projecting the cleaning fluid, the nozzle being at one end of the blade and being capable of being supplied with cleaning fluid by the cleaning fluid circulation channel and comprising a valve, capable of opening or closing the supply of fluid to the nozzle, depending on the pressure of the cleaning fluid in the channel. Positioned at the end of the blade, the nozzle makes it possible to project cleaning fluid onto an optical surface (of an optical element) located close to the glass surface, to clean it effectively.The cleaning of such an optical surface is done by taking advantage of the presence of the cleaning fluid circulation channel in the wiper, this channel being used moreover to project cleaning fluid onto the front glass surface of the vehicle.

[0033] This is a schematic view of a front face of a vehicle 10. The vehicle may be a light vehicle (car) or a heavy goods vehicle (truck, coach). The vehicle comprises a glazed surface 12. This may be the front window (or windshield) of the vehicle. The vehicle also comprises a roof 14 and at least one optical element with an optical surface 16. The optical element may be a means of assisting in driving and / or maneuvering the vehicle. It may be a means of capturing images (a camera for example), a means of transmitting and / or receiving signals (such as a sensor, an optical sensor, for example a LIDAR device, acronym for “light detection and ranging” or “laser imaging, detection, and ranging”). The optical element interacts with the environment through the optical surface 16. It may be a protective surface between the optical element and the environment.For example, it may be the surface of a window between the optical element and the environment, or a surface of a housing enclosing a sensor (such as a face of a housing of the LIDAR device). It may be a constituent of the optical element, such as the surface of a focusing lens of a camera. The surface may be opaque (in the visible wavelengths). The surface may be transparent to the emission and reception wavelengths of the optical element. Also, one can envisage several optical elements interacting with the environment through a single surface.

[0034] The optical surface 16 may be in proximity to the glazed surface 12. The optical surface 16 may be adjacent to the glazed surface 12. The optical surface 16 may be downstream of the glazed surface 12, depending on the direction of travel of the vehicle. The optical surface 16 may be at the top of the glazed surface 12, or at the level of the roof 14. The optical surface 16 may be in an area between the glazed surface 12 and the roof 14. The optical surface 16 is preferably in an area at the interface between the glazed surface 12 and the roof 14. The optical surface 16 may project from the surface formed by the glazed surface 12 and the roof 14. The optical surface 16 allows the optical element to scan towards the front of the vehicle.

[0035] The vehicle 10 comprises a device 18 for wiping (or windshield wiper) the glazed surface 12. The device 18 comprises at least one wiper blade 20 for wiping the window - two blades 20 are shown as an example in the. The blade 20 is in contact with the surface and ensures wiping of the surface. The blade 20 extends in a longitudinal direction. The blade 20 has an elongated shape. The length of the blade 20 may, among other things, depend on the surface to be cleaned by the blade 20. The device 18 may also comprise an arm supporting the blade 20 at one of its ends. The arm is driven in movement at one of its ends by drive means (not visible), comprising a drive motor. The arm in turn drives the blade 20 in movement (in rotation, in translation or according to a movement combining translation and rotation). The movement of the brush 20 results in back and forth movements on the glazed surface 12.Possibly, the movement occurs from a rest position of the wiper 20 (corresponding substantially to the position of the) to an extreme position (or high position) of the wiper 20, relative to the surface 12, then back to the rest position. In the rest position, the wiper 20 is in a position at the foot of the surface 12 substantially transversely to the direction of travel of the vehicle. In the extreme position, the wiper 20 has a position substantially parallel to the direction of travel of the vehicle.

[0036] Figures 2 to 7 show exemplary embodiments of the invention. The wiper 20 comprises, along the wiper 20, at least one channel 22 for circulating cleaning fluid for the surface 12. The channel 22 allows cleaning fluid to be spread along the wiper 20. The wiper 20 may be provided with fluid outlet orifices, along the longitudinal direction of the wiper 20. This allows cleaning fluid to be spread over the surface 12, over the entire length of the wiper 20. Preferably, the wiper 20 is provided with two channels 22 supplied with cleaning fluid. Each channel 22 allows the cleaning fluid to exit along a respective longitudinal edge of the brush 20. Thus, using these two channels, it is possible to supply (only) one of them during each of the back and forth movements of the brush 20, in the upward direction from the rest position and in the downward direction from the extreme position.Thus, each channel allows the projection of cleaning fluid upstream of the wiper 20 in its movement, so as to better control the consumption of the cleaning fluid and to clean the glazed surface 12 effectively.

[0037] The wiper 20 further comprises a nozzle 24 for projecting cleaning fluid. Reference 24 schematically shows the nozzle, which can be offset. The nozzle is towards one end of the wiper 20, or even at the end of the wiper 20. In particular, this is the upper end of the wiper 20, when the wiper 20 is in the extreme position. In other words, the nozzle is at the end of the wiper 20 close to the optical surface 16, in the extreme position. Thus, the nozzle 24 makes it possible to project cleaning fluid towards the optical surface 16 which is other than the glazed surface 12. The nozzle 24 therefore makes it possible to clean the optical surface 16. The nozzle 24 is capable of being supplied with cleaning fluid via the cleaning fluid circulation channel 22 – via one of the two channels 22 if applicable or both. This makes it possible to exploit the presence of the channel 22 to convey the cleaning fluid to the optical surface 16 of the optical element.

[0038] The wiper 20 also includes a valve 26. The valve 26 is capable of opening or closing the supply of cleaning fluid to the nozzle 24. This makes it possible to supply the nozzle 24 only when necessary. This makes it possible to supply the nozzle 24 only when it is decided to clean the optical surface 16. For example, it may be decided to clean the optical surface 16 at a regular frequency, each time the vehicle is started, at the request of the driver or upon detection that the optical surface 16 contains dirt – for example by the optical element. The opening or closing of the supply may be a function of the pressure of the cleaning fluid in the channel 22. This type of control is simple to implement and can be done by decision – and not systematically when the fluid circulation channel is supplied with fluid.

[0039] The nozzle 24 is supplied with cleaning fluid under pressure. A feed pump (not visible) can feed the nozzle 24. The pump can be of the brushless type. This type of pump makes it easy to control the pressure of the cleaning fluid. The pressure can be set at the pump. The pump can be controlled with different pressure levels. The pump can feed the nozzle 24 via the channel 22.

[0040] The valve 26 may be capable of opening the fluid supply to the nozzle 24 when the pressure of the cleaning fluid in the channel 22 is greater than a threshold pressure and is capable of closing the fluid supply to the nozzle 24 when the pressure of the cleaning fluid in the channel 22 is less than the threshold pressure. Thus, during ordinary operation of the device 18 for cleaning the glass surface 12, the cleaning liquid is not sprayed by the nozzle 24 towards the optical surface 16 because a pressure lower than the threshold pressure is sufficient to supply the channels 22 and the orifices along the wiper 20. This makes it possible to control the consumption of fluid and not to reduce the cleaning efficiency of the surface 12. Upon decision, a pressure higher than the threshold pressure may be applied to the cleaning fluid in the channel 22, which makes it possible to spray fluid onto the glass surface 12 and onto the optical surface 16.The watering on the glazed surface 12 (or windshield) is coupled with the watering of the optical surface 16 (such as that of the LIDAR device for example). The valve 26 makes it possible to avoid dedicating a channel 22 to cleaning the optical surface 16 to the detriment of cleaning the surface 12. For example, in a wiper 20 with two channels 22, the valve 26 makes it possible to avoid dedicating one channel 22 to cleaning the optical surface 16 and dedicating the other channel 22 to cleaning the surface 12, the cleaning fluid then being sprayed only in the upward or downward direction. The valve 26 makes possible the functions of projecting cleaning fluid by the wiper 20 onto the glass surface 12 regardless of the upward or downward direction of movement of the wiper 20. The wiper 20 makes it possible to avoid sacrificing the cleaning of the glass surface 12 in one of the directions of movement of the wiper 20 in favor of cleaning the optical surface 16.

[0041] The nozzle 24 is capable of projecting the cleaning fluid in a direction determined as a function of the position of the optical surface 16. For example, the nozzle 24 is capable of projecting the fluid in the extension of the longitudinal direction of the wiper 20. Alternatively, the nozzle 24 is capable of projecting the fluid in an inclined manner relative to the longitudinal direction of the wiper. For example, the projection of the fluid may be transverse to the longitudinal direction of the wiper. Thus, the projection direction of the nozzle 24 is best adjusted according to the relative position of the wiper 20 and the optical surface 16 for optimized cleaning of the optical surface 16.

[0042] Figures 2 to 5 show two exemplary embodiments of the invention in which the nozzle 24 is capable of projecting the fluid in the extension of the longitudinal direction of the wiper 20 (Figures 4 and 5) or transversely to the longitudinal direction of the wiper 20 (Figures 2 and 3). The exemplary embodiments of these figures have the advantage of being simple. Either of the examples can be implemented depending on the space available in the wiper 20.

[0043] In Figures 2 to 5, the valve 26 may comprise an elastic member 28 urging a sealing element 30. The elastic member 28 is for example a spring. The sealing element 30 is capable of opening or closing the fluid supply to the nozzle 24 from the channel 22, depending on the pressure in the channel 22. The sealing element 30 is for example a valve or a ball. Preferably, the sealing element 30 is capable of opening the fluid supply to the nozzle 24 when the pressure in the channel 22 is greater than a stiffness of the elastic member. The sealing element 30 is capable of closing the fluid supply to the nozzle when the pressure in the channel is less than a stiffness of the elastic member 28. Thus, in the, the pressure in the channel 22 is low, less than the threshold pressure. The sealing element closes the fluid supply to the nozzle 24 from the channel 22.The wiper 20 is then supplied with cleaning fluid only to clean the glazed surface 12. On the, the pressure in the channel 22 is higher, greater than the threshold pressure. The sealing element opens the fluid supply to the nozzle 24, from the channel 22. The wiper 20 is then supplied with cleaning fluid to clean the glazed surface 12 as well as the optical surface 16. On the, the pressure in the channel 22 is low, lower than the threshold pressure. The sealing element closes the fluid supply to the nozzle 24, from the channel 22. The wiper 20 is then supplied with cleaning fluid only to clean the glazed surface 12. On the, the pressure in the channel 22 is higher, greater than the threshold pressure. The sealing element opens the fluid supply to the nozzle 24, from the channel 22. The wiper 20 is then supplied with cleaning fluid to clean the glazed surface 12 as well as the optical surface 16.

[0044] Furthermore, in Figures 4 and 5 but in a manner not limited to these figures, an example of a seat 31 is shown to receive the sealing element 30. The seat 31 makes it possible to ensure good sealing between the channel 22 and the nozzle 24 when the pressure is lower than the threshold pressure.

[0045] Figures 6 and 7 show an exemplary embodiment of the invention in which the nozzle 24 is capable of projecting the fluid in the extension of the longitudinal direction of the brush 20. The fluid could also be projected in another direction, for example according to Figures 2 and 3. The exemplary embodiment of these figures has the advantage of being simple and space-saving.

[0046] In Figures 6 and 7, the valve 26 may comprise a membrane 32. The membrane 32 may be arranged across the channel 22. The membrane 32 may comprise one or more openings 34. The at least one opening may be, for example, a continuous slot or a series of perforations; depending on the, it is a plurality of openings in the form of perforations. In the following, reference is made to an opening 34 in a non-limiting manner. The membrane is capable of opening or closing the supply of fluid to the nozzle 24, from the channel 22, depending on the pressure in the channel 22. The opening 34 may be closed when the pressure of the cleaning fluid in the channel 22 is below a threshold pressure. The membrane 32 is at rest, without being deformed by the pressure below the threshold pressure. The membrane 32 is straight, the opening 34 is compressed and the fluid cannot pass.The opening 34 can be opened when the pressure of the cleaning fluid in the channel 22 is above a threshold pressure. The membrane 32 is deformed by the pressure above the threshold pressure. The opening 34 is no longer compressed and the fluid can pass through. Thus, on the, the pressure in the channel 22 is low, below the threshold pressure. The membrane 32 closes the fluid supply to the nozzle 24, from the channel 22. The wiper 20 is then supplied with cleaning fluid only to clean the glazed surface 12. On the, the pressure in the channel 22 is higher, above the threshold pressure. The membrane 32 opens the fluid supply to the nozzle 24, from the channel 22. The wiper 20 is then supplied with cleaning fluid to clean the glazed surface 12 as well as the optical surface 16.

[0047] The operation of the device 18 and a method for spraying cleaning fluid onto the glazed surface 12 and onto the optical surface 16 may be as follows. The spraying of cleaning fluid by the nozzle 24 is intended to clean the optical surface 16 positioned at the top of the glazed surface 12, in particular at the interface between the glazed surface 12 and the roof 14. The actuation of the valve 26 is therefore carried out when the nozzle 24 is in a position relative to the optical surface 16 allowing adequate watering of the optical surface 16. The actuation of the valve 26 may be carried out when the nozzle 24 is facing the optical surface 16.However, it is preferable for effective cleaning of the optical surface 16 that the valve 26 be actuated according to a certain stroke of the wiper (the stroke being angular or in translation depending on the operation of the device 18) which is sufficiently restricted to limit the consumption of cleaning fluid but also sufficiently wide to properly water and clean the optical surface 16. Thus, the actuation of the valve can be operated so that the valve is able to open the supply of fluid to the nozzle on either side (forward movement) and / or on the other side (return movement) of the extreme position of the wiper, the pressure of the cleaning fluid in the channel being greater than the threshold pressure.Thus, the valve is able to open the fluid supply to the nozzle from the channel 22 according to a certain stroke of the wiper before reaching and / or after reaching the extreme position, the pressure of the cleaning fluid in the channel then being higher than the threshold pressure. In the (forward) movement of the wiper from the rest position to the extreme position, the opening of the fluid supply to the nozzle can occur beyond a certain stroke of the wiper. The pressure of the cleaning fluid in the channel is then higher than the threshold pressure, the nozzle spraying the cleaning fluid onto the optical surface. In the (return) movement of the wiper from the extreme position to the rest position, the closing of the fluid supply to the nozzle can occur beyond a certain stroke of the wiper.The cleaning fluid pressure in the channel is then lower than the threshold pressure, the nozzle no longer spraying cleaning fluid onto the optical surface.

[0048] The opening of the fluid supply to the nozzle can occur only during the forward movement of the wiper, or only during the return movement of the wiper, or during both forward and return movements (on possibly independent wiper strokes). The valve opening can occur shortly before the extreme position (forward movement) and / or shortly after (or from) the extreme position (return movement). For example, depending on a rotational movement of the wiper, the valve opening can occur in the last 25° of the rotational movement. The valve opening can be in the last 25° before reaching the extreme position and / or in the first 25° from the extreme position. Of course, the stroke during which the valve is open (pressure above the threshold pressure) can be adjusted identically or differently on the forward and return movements.Preferably, the opening of the fluid supply to the nozzle may occur during the forward movement of the wiper, so as to wipe away fluid splashes during the return movement.

[0049] The projection of fluid towards the optical surface 16 during the forward and backward movements of the wiper 20 may depend on the configuration of the channels 22 along the wiper 20. For example, in a two-channel wiper 22, one of the channels is connected to the nozzle 24 via the valve 26 – the optical surface 16 is then sprayed during a single movement. One of the channels 22 may therefore be able to supply some of the orifices along the wiper (to project the fluid onto the glazed surface 12) from the rest position to the extreme position as well as the nozzle 24 beyond a certain stroke of the wiper (to project the fluid onto the optical surface 16). The other of the channels may then be able to supply the other orifices along the wiper (to project the fluid onto the glazed surface 12) from the extreme position to the rest position. It can be envisaged that the two channels 22 are connected to the nozzle 24 via the valve 26 – the optical surface 16 is then watered during the two movements.

[0050] The threshold pressure for opening or closing the fluid supply to the nozzle may, for example, be between 1.8 bar and 2.2 bar, preferably 2 bar. Other values ​​are also possible, in particular depending on the vehicle equipped with the wiping device 18.

[0051] The wiper blade 20 may further comprise covers at the ends of the wiper blade, the nozzle 24 and the valve 26 being in one of the covers. In other words, the invention may also relate to an end cover of a wiper blade, the cover comprising at least one nozzle for projecting the cleaning fluid, the nozzle being capable of being supplied with cleaning fluid and comprising a valve capable of opening or closing the supply of fluid to the nozzle, depending on the pressure of the cleaning fluid. The advantages described elsewhere are applicable to the cover. The nozzle 24 and the valve 26 may be integrated into the cover, preferably the top cover of the wiper blade – or in other words, into the cover at the end of the wiper blade which is at the top of the wiper blade when the latter is in the extreme position.

[0052] According to the, the wiper blade 20 receiving the nozzle 24 and the valve 26 can be in front of the front passenger seat of the vehicle. Indeed, in the extreme position, the blade 20 in front of the passenger can have its end facing the optical surface 16 – and therefore the nozzle 24 facing (or in line with) the optical surface 16 to project the fluid there.

[0053] The present invention has been described in relation to specific embodiments, which are of purely illustrative value and should not be considered as limiting. In general, it will be obvious to a person skilled in the art that the present invention is not limited to the examples illustrated and / or described above. For example, the invention may make it possible to spray cleaning fluid onto any other glass surface and optical surface, for example at the rear of the vehicle. It is also conceivable that the projection of fluid by the nozzle 24 onto the optical surface 16 is not close to the extreme position of the wiper, but in an intermediate position between the rest position and the extreme position – in particular if the device 18 comprises only one wiper.

Claims

A wiper blade (20) for wiping a glass surface, the blade extending in a longitudinal direction and comprising:Along the blade (20), at least one channel (22) for circulating fluid for cleaning the glass surface, the channel (22) being capable of being supplied with cleaning fluid under pressure,At least one nozzle (24) for projecting the cleaning fluid, the nozzle being at one end of the blade (20) and is capable of being supplied with cleaning fluid by the cleaning fluid circulation channel (22),A valve (26), capable of opening or closing the supply of fluid to the nozzle (24), depending on the pressure of the cleaning fluid in the channel (22). The wiper (20) of claim 1, wherein the valve (26) is adapted to open the fluid supply to the nozzle (24) when the pressure of the cleaning fluid in the channel (22) is greater than a threshold pressure and is adapted to close the fluid supply to the nozzle when the pressure of the cleaning fluid in the channel (22) is less than the threshold pressure. The broom (20) according to one of the preceding claims, wherein the nozzle (24) is capable of projecting the cleaning fluid in the extension of the longitudinal direction of the broom (20) or in an inclined manner relative to the longitudinal direction of the broom (20), preferably transversely to the longitudinal direction of the broom (20). The wiper (20) according to one of the preceding claims, wherein the valve (26) comprises an elastic member (28) urging a sealing element (30), the sealing element being adapted to open or close the fluid supply to the nozzle (24) depending on the pressure in the channel (22), preferably, the sealing element being adapted toOpen the fluid supply to the nozzle when the pressure in the channel (22) is greater than a stiffness of the elastic member, andClose the fluid supply to the nozzle when the pressure in the channel (22) is less than a stiffness of the elastic member The wiper (20) according to one of claims 1 to 3, wherein the valve (26) comprises a membrane (32) with at least one opening (34), the opening being open when the pressure of the cleaning fluid in the channel (22) is above a threshold pressure and the opening being closed when the pressure of the cleaning fluid in the channel (22) is below the threshold pressure, the at least one opening preferably being a continuous slot or a series of perforations. The wiper (20) of any preceding claim, further comprising covers at the ends of the wiper (20), the nozzle (24) and the valve (26) being in one of the covers. A device (18) for wiping the glass surface comprising the blade (20) according to one of the preceding claims. The device (18) according to the preceding claim, in which the brush (20) is movable from a rest position to an extreme position and vice versa, the valve (26) is capable of opening the fluid supply to the nozzle (24) according to a certain stroke of the brush before reaching and / or after reaching the extreme position, the pressure of the cleaning fluid in the channel (22) being greater than the threshold pressure. The device (18) according to the preceding claim, in which the wiper comprises, along its longitudinal direction, orifices for projecting cleaning fluid onto the glass surface and two channels for circulating fluid for cleaning the glass surface, from the rest position to the extreme position, one of the channels being capable of supplying some of the orifices as well as the nozzle (24) beyond a certain stroke of the wiper (20), from the extreme position to the rest position, the other of the channels being capable of supplying the other orifices. A method of projecting cleaning fluid onto a glass surface and onto an optical surface, comprising: providing the device (18) according to one of the three preceding claims, the wiper (20) being movable from a rest position to an extreme position and vice versa, opening the fluid supply to the nozzle (24) along a certain stroke of the wiper (20) before reaching and / or after reaching the extreme position, the pressure of the cleaning fluid in the channel (22) being greater than the threshold pressure, projecting cleaning fluid onto the glass surface and onto the optical surface after opening the fluid supply to the nozzle. A vehicle (10) with a direction of travel, the vehicle comprising:A front glazed surface (12),An optical surface (16) downstream of the glazed surface, in the direction of travel of the vehicle,A device (18) for wiping the glazed surface according to one of claims 7 to 9, the wiping device being capable of projecting cleaning fluid towards the optical surface (16) through the nozzle (24) as a function of the pressure of the cleaning fluid in the channel (22). The vehicle (10) according to the preceding claim, wherein the wiper blade (20) is in front of the front passenger seat of the vehicle. The vehicle (10) according to one of the two preceding claims, further comprising a LIDAR device, the optical surface being the optical surface of the LIDAR device.

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