JP2007112261A - Window glass washing protective device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate the installation of an additional generating device such as a blower or a compressor for generating compressed air, reduce manufacturing cost for a window glass washing protective device, widen an installation space for the other device, and improve the ease of assembling and the maintenance of a vehicle. <P>SOLUTION: This device has a supply mechanism 5 which can supply cooling air after passing through a radiator 47 for cooling an engine 2 of the vehicle 1 as the compressed air. The supply mechanism 5 has the radiator 47 and the blower 48 for blowing cooling air to the radiator 47. The radiator 47 is disposed on the air suction side of the blower 48, and an exhaust port 48b of the blower 48 is communicated with a blower port 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a window glass cleaning protection device that blows compressed air from a blowout port to a window glass of a vehicle to remove foreign matter on the surface of the window glass or prevent foreign matter adhesion, and more particularly, to the window glass cleaning protection device. The present invention relates to a compressed air supply mechanism.

  Conventionally, in vehicles such as automobiles, construction machines such as dump trucks and power shovels, and agricultural machines such as trucks, combine tractors, etc., wiper blades are used to remove foreign substances such as rain, snow, and dust attached to window glass. A wiper device comprising a wiper arm attached to the window glass is provided in the vicinity of the window glass, and the wiper arm is reciprocated in contact with the window glass surface.

  However, in such a mechanical wiper device, the driver's view is obstructed by the wiper arm and the wiper blade, so that the driving operation is difficult, and the wiper blade is deteriorated and worn by sliding with the window glass surface. It needs to be replaced regularly.

Therefore, in order to solve these problems, by blowing compressed air on the window glass to blow off foreign matters such as rain, snow, dust, etc., not only the attached foreign matters are removed, but also the attachment of foreign matters is prevented. A window glass cleaning protection device using an air injection method is known. And about this window glass washing | cleaning protection apparatus, the technique (for example, patent document 1) which sprays on the said window glass the laminated jet comprised from a drive spout layer and the low-speed secondary air flow layer sent between this drive spout layer. And a technique (for example, see Patent Document 2) in which compressed air compressed by a compressor is ejected from an injection nozzle toward a window glass.
JP-A-2-293236 Japanese Patent Laid-Open No. 8-111068

  However, in the former, it is necessary to provide a plurality of compressed air generating devices such as a blower and a compressor in order to form the driving spouted bed and the secondary air flowing layer, and the manufacturing cost of the window glass cleaning protection device is reduced. There is a problem that the installation space of other devices is small and the assembling property and the maintenance property of the vehicle are lowered as the height increases. In addition, since the number of spray nozzles is required for the number of layers to be formed, the spray structure is complicated, and it takes time and labor to assemble and maintain the window glass cleaning protection device. Further, to maintain each layer constituting the laminated jet uniformly and stably. However, there is a problem that an expensive air control mechanism is required because high-precision control of the air volume and speed of the supply air is indispensable in addition to the periodic inspection of the injection nozzle. In addition, since the snow attached to the window glass is melted by blowing preheated air as a driving spout layer, it is necessary to newly install a device such as a heater for heating, which further increases the manufacturing cost of the window glass cleaning protection device There was a problem of doing.

  On the other hand, the latter has a problem that it is necessary to newly provide a compressor for blowing compressed air onto the window glass, and similarly to the former, the manufacturing cost of the window glass cleaning protection device is increased. In addition, the snow adhering to the window glass sucks warm air in the vicinity of the radiator and blows it to the window glass to melt it, but the compressor is indispensable for this suction, and an air inlet is simply placed in the vicinity of the radiator. However, the cooling air heated by passing through the radiator is not preferentially sucked, and there is a problem that sufficiently high-temperature compressed air cannot be obtained.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
That is, according to the first aspect of the present invention, in a window glass cleaning protection device that blows compressed air from a blow-out opening to a window glass of a vehicle to remove foreign matter on the surface of the window glass or prevent foreign matter adhesion, the vehicle engine is water-cooled. And a supply mechanism capable of supplying the cooling air after passing through the radiator as the compressed air.
According to a second aspect of the present invention, the supply mechanism includes the radiator and a blower for blowing the cooling air to the radiator. The radiator is disposed on an intake side of the blower, and an exhaust port of the blower is provided. It communicates with the air outlet.
According to a third aspect of the present invention, an engine is interposed between the radiator and the blower.
According to a fourth aspect of the present invention, the supply mechanism includes the radiator and a blower for blowing the cooling air to the radiator, the radiator is disposed on an exhaust side of the blower, and the radiator is sandwiched between the radiators. A duct is provided on the side opposite to the blower, and an exhaust port of the duct is communicated with the air outlet.
According to a fifth aspect of the present invention, an air guide that guides the cooling air to the duct is provided between the blower and the duct.
In Claim 6, an engine is interposed between the said air blower and a duct.
In Claim 7, the delivery destination of the compressed air discharged | emitted from the said exhaust port is made into at least one of the said blower outlet, the surroundings of the said engine, the supercharger of the said engine, and the generator provided in the said vehicle. A switchable switching mechanism is provided.
In Claim 8, the said air blower shall be a radial flow type air blower.
According to a ninth aspect of the present invention, a region in a substantially laminar flow state along the surface of the window glass is formed in a jet composed of compressed air ejected from the outlet.
In Claim 10, a baffle is provided in the said blower outlet.
According to an eleventh aspect of the present invention, a suction port is disposed opposite to the air outlet, and the jet is formed between the air inlet and the air outlet.
According to the twelfth aspect, the air volume and the wind speed of the compressed air blown out from the air outlet and the air volume and the air speed of the suction air sucked into the air inlet are substantially equal.
According to a thirteenth aspect of the present invention, the suction air sucked into the suction port is returned to the radiator.

Since this invention was comprised as mentioned above, there exists an effect shown below.
That is, according to the first aspect of the present invention, in a window glass cleaning protection device that blows compressed air from a blow-out opening to a window glass of a vehicle to remove foreign matter on the surface of the window glass or prevent foreign matter adhesion, the vehicle engine is water-cooled. It is equipped with a supply mechanism that can supply the cooling air after passing through the radiator as compressed air, so there is no need to newly provide a generator such as a blower or a compressor to generate compressed air, and window glass cleaning The manufacturing cost of the protective device can be reduced, the installation space for other devices is widened, and the assembly and maintenance properties of the vehicle are improved. In addition, the cooling air that has passed through the radiator and has risen in temperature can be blown onto the window glass as high-temperature compressed air, and the snow adhering to the window glass can be quickly melted. The energy cost for driving the window glass cleaning protection device can be reduced accordingly.
According to a second aspect of the present invention, the supply mechanism includes the radiator and a blower for blowing the cooling air to the radiator. The radiator is disposed on an intake side of the blower, and an exhaust port of the blower is provided. Since it is connected to the air outlet, all the cooling air that has passed through the radiator can be collected by a blower and sent from the exhaust port of the blower to the air outlet as compressed air. The supply mechanism can be formed with a simple configuration without providing it, and the manufacturing cost and maintainability of the window glass cleaning protection device can be improved.
In claim 3, since the engine is interposed between the radiator and the blower, the cooling air can be passed not only through the radiator but also through the engine, and the temperature of the compressed air can be further increased. The snow attached to can be melted and removed more quickly.
According to a fourth aspect of the present invention, the supply mechanism includes the radiator and a blower for blowing the cooling air to the radiator, the radiator is disposed on an exhaust side of the blower, and the radiator is sandwiched between the radiators. Since a duct is provided on the opposite side of the blower and the exhaust port of the duct is connected to the blower outlet, the cooling air that has passed through the radiator flows into the duct instead of the blower, reducing the heat loss of the blower due to high-temperature cooling air It is possible to extend the service life of the blower.
In claim 5, since the air guide is provided between the blower and the duct to guide the cooling air to the duct, the cooling air can be collected in the duct without escaping to the outside, and the window glass is washed. A sufficient air volume and speed for protection can be secured.
In claim 6, since the engine is interposed between the blower and the duct, the cooling air can be passed not only through the radiator but also through the engine, the temperature of the compressed air can be increased, and the window glass The snow attached to can be melted and removed more quickly.
In Claim 7, the delivery destination of the compressed air discharged | emitted from the said exhaust port is made into at least one of the said blower outlet, the surroundings of the said engine, the supercharger of the said engine, and the generator provided in the said vehicle. Since a switching mechanism that can be switched is provided, when the window glass cleaning protection device is not used, by operating the switching mechanism, compressed air is blown around the engine so that water cooling by a radiator is performed as in the past. In addition, the engine can also be cooled by air cooling, or compressed air can be supplied to the engine supercharger to operate the turbo mechanism to increase the engine output, or the compressed air can be used as a fan generator To generate electricity and use that power for driving a fan or charging a battery, etc. It can be effectively utilized without having to uselessly.
In claim 8, since the blower is a radiant flow type blower, the blower can be provided with a blade having an angle perpendicular to or close to the blade outlet angle, and the blade having the strongest shape as the strength. This makes it possible to secure a sufficient air volume and speed for cleaning and protecting the window glass.
In Claim 9, since the area | region of the substantially laminar flow state along the surface of the said window glass is formed in the jet consisting of the compressed air which ejects from the said blower outlet, generation | occurrence | production of the turbulent flow and vortex in a jet is suppressed It is stable and the jet stream removes the foreign matter adhering to the surface of the window glass with a strong force, and it becomes a kind of protective layer called an air curtain, which can blow off the foreign matter to be attached. Excellent cleaning action and protective action can be obtained. Furthermore, since the generation of turbulent flow and vortices in the jet is suppressed, the vibration of the window glass and the like due to the jet is reduced, and noise when using the window glass cleaning protection device can be suppressed.
In claim 10, since the air outlet is provided with a rectifying body, the compressed air is rectified with a simple structure in which a rectifying plate or the like is attached to the air outlet without using an advanced air control mechanism or the like. Thus, it is possible to form a substantially laminar flow region, to reduce the manufacturing cost of the window glass cleaning protection device, and to improve the assemblability and maintainability.
In Claim 11, since a suction inlet is opposingly arranged in the said blower outlet and the said jet flow is formed between this suction inlet and the said blower outlet, it is substantially layered by the airflow of the suction air which flows in into the said suction inlet. It is possible to further promote the formation of the region in the flow state in the jet, to suppress the generation of turbulence and vortices in the jet, and to further improve the cleaning action and the protection action against foreign matters.
In claim 12, since the air volume and speed of the compressed air blown out from the air outlet are substantially equal to the air volume and air speed of the suction air sucked into the air inlet, the region of the substantially laminar flow state in the jet Can be formed more stably, and the cleaning action and protection action against foreign matters can be further improved.
In claim 13, since the suction air sucked into the suction port is recirculated to the radiator, the cooling by the low-temperature suction air proceeds, and only the outside air flowing in at low speed from the vent hole opened in the front part of the vehicle body Compared with air cooling, the heat exchange efficiency is greatly improved, and the water cooling efficiency of the engine by the radiator can be further increased.

Next, an embodiment of the present invention will be described.
FIG. 1 is a side view of a vehicle showing the overall configuration of a window glass cleaning protection device according to the present invention, FIG. 2 is a side view of a bonnet showing a supply mechanism, and FIG. 3 is a bonnet showing a supply mechanism having a switching valve. FIG. 4 is a side sectional view of a bonnet showing a supply mechanism provided with a motor. FIG. 5 is a side sectional view of a bonnet showing a feeding mechanism of a second embodiment. FIG. 7 is a partial cross-sectional side view of the bonnet showing the supply mechanism of the third embodiment, FIG. 7 is a partial cross-sectional side view of the bonnet showing the supply mechanism having a different arrangement configuration in the third embodiment, and FIG. FIG. 9 is an explanatory view showing a jet forming mechanism according to another embodiment, and FIG. 10 is a partial cross-sectional side view of the bonnet when suction air is circulated.

First, the overall configuration of the window glass cleaning protection device according to the present invention will be described with reference to FIG.
A front seat 8 and a rear seat 9 are arranged in the front and rear of a compartment 7 of the vehicle 1, and an instrument panel 11 constituting a front wall of the compartment 7 is arranged in the vehicle width direction in front of the front seat 8. It is extended. And the display part 13 of various instruments, such as a speedometer, is attached to the upper part of this instrument panel 11, and the lower end of the windshield 14 is supported in front of this display part 13. FIG. A bonnet 12 is continuously disposed in front of the windshield 14, and an engine room 17 is formed in a space below the bonnet 12, and the compressed air supply mechanism 5 according to the present invention is provided in the engine room 17. And engine 2 are mounted in order from the front.

  Further, a jet forming mechanism 6 for generating a jet by blowing compressed air from the supply mechanism 5 along the front surface of the windshield 14 from the blower outlet 15 is disposed near the lower end of the windshield 14. The window glass cleaning protection device 4 is constituted by the jet forming mechanism 6 and the supply mechanism 5. Accordingly, high-temperature compressed air is sent from the supply mechanism 5 to the jet forming mechanism 6, and the compressed air blown out from the outlet of the jet forming mechanism 6 removes foreign matter on the surface of the windshield 14 or prevents foreign matter from adhering. Like to do.

Next, the supply mechanism 5 will be described with reference to FIGS.
As shown in FIG. 2, left and right side members 3 extend in the front-rear direction on both lower sides of the engine room 17 having the supply mechanism 5, and the front end portions of the left and right side members 3 are front crossings. In addition to being connected by the member 18, the front and rear middle portions of the left and right side members 3 are connected by a cross member 19 behind the front cross member 18. Middle portions of the cross member 19 and the front cross member 18 are connected by a center member 20, and the engine 2 is mounted on the center member 20 via a mount (not shown), It is attached to the side member 3 via a mount 51.

  A radiator stay 46 is fixed to the front cross member 18, and a radiator 47 is fixed between the upper surface of the radiator stay 46 and an upper frame (not shown) above the front cross member 18. . Further, a blower 48 fixed to the center member 20 by a mounting frame 50 is interposed between the radiator 47 and the engine 2.

  A large number of air holes 12a are opened in the bonnet 12 in front of the radiator 47, and a shroud 49 serving as a wind guide is mounted on the rear portion of the radiator 47, and the shroud 49 is narrowed toward the rear. The rear end of the shroud 49 is fixed to the air inlet 48a of the blower 48. The rotating shaft 48 c of the blower 48 is connected to the output shaft 2 a of the engine 2 so that the blower 48 can be driven by the engine 2. Further, one end of an air supply pipe 44 for supplying compressed air to the jet flow forming mechanism 6 is connected to an exhaust port 48b provided on the upper side of the blower 48, and the other end of the air supply pipe 44 is connected to the air outlet. 15, and the compressed air generated by the blower 48 can be sent and supplied to the air outlet 15 through the air supply pipe 44.

  In such a configuration, when the engine 2 is started, the blower 48 is driven and air is sucked from the intake port 48a, so that the inside of the shroud 49 becomes negative pressure, and low-temperature outside air is sucked from the vent hole 12a and cooled. After passing through the radiator 47 as wind and taking heat from the radiator 47, it is sucked into the blower 48. This high-temperature cooling air is compressed in the blower 48 and sent out from the exhaust port 48 b toward the blower outlet 15.

  That is, in the window glass cleaning protection device 4 that blows compressed air from the outlet 15 to the windshield 14 that is the window glass of the vehicle 1 to remove foreign matter on the surface of the windshield 14 or prevent foreign matter adhesion, the vehicle 1 Since the supply mechanism 5 capable of supplying the cooling air after passing through the radiator 47 for cooling the engine 2 as water is provided as the compressed air, a generator such as a blower or a compressor is newly provided to generate the compressed air. This eliminates the need to reduce the manufacturing cost of the window glass cleaning and protection device 4, further increases the installation space for other devices, and improves the assembly and maintenance of the vehicle. In addition, since the cooling air that has passed through the radiator 47 and has risen in temperature is blown onto the windshield 14 as high-temperature compressed air, the snow adhering to the windshield 14 can be quickly melted, thereby generating high-temperature compressed air. Necessary heaters or the like are not required, and the energy cost for driving the window glass cleaning protection device 4 can be reduced accordingly.

  The supply mechanism 5 includes the radiator 47 and a blower 48 for blowing the cooling air to the radiator 47. The radiator 47 is disposed on the intake side of the blower 48, and the blower 48 Since the exhaust port 48b communicates with the blowout port 15, all the cooling air that has passed through the radiator 47 can be collected by the blower 48 and sent out from the exhaust port 48b of the blower 48 to the blowout port 15 as compressed air. The supply mechanism 5 can be formed with a simple configuration without newly providing a gas collecting structure such as a duct, and the manufacturing cost and maintainability of the window glass cleaning protection device 4 can be improved.

  In addition, as shown in FIG. 3, an exhaust hood 54 is provided so that the discharge side faces the engine 2 after a switching valve 52 is provided in the middle of the air supply pipe 44. The engine 2 is connected to a valve 52 via a connecting pipe 53, the turbocharger 22 is attached to the engine 2, and the supercharger 22 is connected to the switching valve 52 via a connecting pipe 21. A fan-type generator 68 is disposed in the engine room 17, and the generator 68 is connected to the switching valve 52 via a connecting pipe 66. The switching valve 52 connects the exhaust port 48b. The tip may be switched to at least one of the air supply pipe 44, the connection pipe 53, the connection pipe 21, and the connection pipe 66. Thus, when the window glass cleaning protection device 4 is not used, the switching valve 52 is switched to the connection pipe 53 side, the connection pipe 21 side or the connection pipe 66 side, and the compressed air from the blower 48 is exhausted through the connection pipe 53 to the exhaust hood. 54, the engine 2 is air-cooled as usual, or compressed air from the blower 48 is supplied to the supercharger 22 via the connecting pipe 21, or compressed air from the blower 48 is connected to the connecting pipe. 66 can be supplied to the generator 68 via 66.

  That is, the destination of the compressed air discharged from the exhaust port 48b is at least one of the outlet 15, the periphery of the engine 2, the supercharger 22 of the engine 2, and the generator 68 provided in the vehicle 1. Since the switching valve 52 which is a switching mechanism which can be switched to one is provided, when the window glass cleaning protection device 4 is not used, the switching valve 52 is operated to blow compressed air around the engine 2. Thus, the engine 2 can be cooled not only by water cooling by the radiator 47 but also by air cooling as in the prior art, or by supplying compressed air to the supercharger 22 of the engine 2 to operate the turbo mechanism, Alternatively, the compressed air is supplied to the fan-type generator 68 to generate power, and the power is driven by a blower or the like, a battery 56 described later, Of to be able to use charging, thus, it can be effectively utilized without having to always wasted cooling air that has passed through the radiator 47.

  As shown in FIG. 4, a motor 55 may be attached to the blower 48, and the blower 48 may be rotationally driven by the motor 55. As a result, the engine 2 can be arranged separately from the radiator 47 and the blower 48, and the degree of freedom of layout of each device and apparatus can be increased. For example, in a construction machine, an agricultural machine, etc., the radiator 47 and the blower 48 are left as they are, and only the heavy engine 2 is moved to the front and rear center of the vehicle 1, thereby adjusting the weight balance of the entire machine body and driving stability. Can also be improved.

  Furthermore, electric power to the motor 55 may be supplied from a battery 56, and the battery 56 may be charged by a generator 57 driven by the engine 2. As a result, the motor 55 can rotationally drive the blower 48 with the electric power from the battery 56 charged during operation of the engine 2, and supply compressed air to the outlet 15 regardless of the operating state of the engine 2. Can do. That is, even if the output of the engine 2 is reduced or the engine 2 is stopped and the vehicle is parked, if necessary, the windshield 14 is blown with compressed air to blow off foreign matters such as rain, snow, and dust. Visibility can be secured at any time.

Next, the supply mechanism 29 of the second embodiment will be described with reference to FIG.
In the supply mechanism 29, a radiator 47, an engine 58, and a blower 59 are disposed in order from the front on the center member 20, and the rotary shaft 59 c of the blower 59 is output from the engine 58 to the rear. It is connected to the shaft 58a. Further, a shroud 60 is formed from the rear portion of the radiator 47 to the intake port 59a of the engine 58 and the blower 59, and one end of the air supply pipe 44 is connected to the exhaust port 59b provided on the upper portion of the blower 59. The other end of the air supply pipe 44 is connected to the air outlet 15.

  In such a configuration, when the engine 58 is started, the blower 59 is driven and air is sucked from the intake port 59a, so that the inside of the shroud 60 has a negative pressure, and low-temperature outside air is sucked from the vent hole 12a of the bonnet 12. Then, it passes through the radiator 47 as cooling air. The cooling air deprived of heat from the radiator 47 passes through the engine 58 having a high surface temperature and further deprives the heat, and is then sucked into the blower 59 from the intake port 59a. In this way, the cooling air having a higher temperature than when only passing through the radiator 47 is compressed in the blower 59 and sent out from the exhaust port 59b toward the air outlet 15.

  That is, since the engine 58 is interposed between the radiator 47 and the blower 59, the cooling air can be passed not only through the radiator 47 but also through the engine 58, and the temperature of the compressed air can be made higher. The snow adhering to the windshield 14 which is glass can be melted and removed more quickly.

Next, the supply mechanism of the third embodiment will be described with reference to FIGS.
In the supply mechanisms 30a and 30b, unlike the supply mechanisms 5 and 29, the radiator 47 is disposed on the exhaust side of the blower, and the cooling air generated by the blower and passing through the radiator 47 is provided at the rear of the radiator 47. It is collected in the duct 62 and sent to the outlet 15.

  For example, in the supply mechanism 30 a of FIG. 6, the blower 61, the engine 2, the radiator 47, and the duct 62 are sequentially arranged on the center member 20 from the front, and the engine 2 is connected to the exhaust port 61 b of the blower 61. A shroud 63 is formed over the radiator 47. Furthermore, one end of the air supply pipe 44 is connected to an exhaust port 62 b provided at the upper end of the duct 62, and the other end of the air supply pipe 44 is connected to the air outlet 15.

  In such a configuration, when the engine 2 is started and the blower 61 is driven, the low-temperature outside air that has passed through the vent hole 12a of the bonnet 12 is sucked from the intake port 61a and discharged from the exhaust port 61b as cooling air. . The discharged cooling air passes through the engine 2 and the radiator 47 inside the shroud 63 without leaking outside and takes a large amount of heat, and then flows into the hood 62a of the duct 62 and is throttled by the exhaust port 62b. The compressed air is sent out toward the outlet 15 via the air supply pipe 44.

  That is, the supply mechanism 30a includes the radiator 47 and a blower 61 for blowing the cooling air to the radiator 47. The radiator 47 is disposed on the exhaust side of the blower 61, and the radiator 47 Since a duct 62 is provided on the opposite side to the blower 61 and the exhaust port 62b of the duct 62 communicates with the blowout port 15, the cooling air that has passed through the radiator 47 flows into the duct 62 instead of the blower 61, and the high temperature The heat loss of the blower 61 due to the cooling air can be reduced, and the life of the blower 61 can be extended.

  Furthermore, since the shroud 63 that is a wind guide for guiding the cooling air is provided in the duct 62 between the blower 61 and the duct 62, the cooling air can be collected in the duct 62 without escaping to the outside. A sufficient air volume and speed for cleaning and protecting the windshield 14 that is a window glass can be secured.

  In addition, since the engine 2 is interposed between the blower 61 and the duct 62, the cooling air can be passed not only through the radiator 47 but also the engine 2, and the temperature of the compressed air can be made higher. The snow adhering to the windshield 14 which is a window glass can be melted and removed more quickly.

  Further, in the supply mechanism 30b of FIG. 7, the blower 67, the radiator 47, the engine 2, and the duct 62 provided with the motor 65 are sequentially arranged from the front, and from the exhaust port 67b of the blower 67, the radiator 47, the engine. 2. A shroud 64 is formed in front of the hood 62a of the duct 62. In this case, the cooling air composed of low-temperature outside air sucked from the intake port 67a first passes through the radiator 47, so that the heat exchange efficiency in the radiator 47 is increased, and the water cooling efficiency of the engine 2 by the radiator 47 is increased. Can do.

  The type of the blower 48, 59, 61, 67 is not particularly limited, but in order to further improve the cleaning protection performance of the window glass, it is a so-called radial flow blower having radial blades. Preferably there is. In this radiant flow type, the blade exit angle has an angle of 90 degrees or close to it, so that the strongest shape is obtained as the strength of the blade, and the blade can sufficiently withstand even if the rotational speed is increased. It has become.

  That is, since the blowers 48, 59, 61, and 67 are radiant flow blowers, the blower can be provided with blades having a shape that is perpendicular to or close to the blade exit angle and has the strongest shape as the strength. Rotation is possible, and it is possible to secure a sufficient air volume and speed for cleaning and protecting the windshield 14 that is a window glass.

Next, the jet forming mechanism 6 will be described with reference to FIG.
In the jet flow forming mechanism 6, the air outlet 15 is formed at the rear end portion of the air supply pipe 44, and the air outlet 15 is bent substantially parallel to the front surface of the windshield 14. A rectifying body 70 having a guide plate 70a is fitted. The compressed air to be ejected is rectified by the guide plate 70a, and the jet 71 made of the compressed air forms a substantially laminar flow region from the lower surface of the windshield 14 to the front of the roof 23. It blows out backwards. Since the jet 71 has a substantially laminar flow region as described above, the turbulent flow and the vortex are hardly generated and diffused, and the potential core which is a uniform flow region having the same flow velocity as the inside of the outlet is long. It can be secured stably over a distance, and the foreign matter on the surface of the windshield 14 is blown backward with a strong force, and at the same time, a kind of air curtain is formed, and by the air curtain, rain, snow, Foreign matter such as dust is flipped back immediately before adhering to the surface of the windshield 14.

  That is, since a region in a substantially laminar flow state along the surface of the windshield 14 which is the window glass is formed in the jet 71 made of compressed air ejected from the blower outlet 15, turbulence and vortices in the jet 71 are formed. Generation is suppressed and stabilized, and the jet 71 removes the foreign matter adhering to the surface of the windshield 14 with a strong force, and forms a kind of protective layer called an air curtain to blow away the foreign matter to be attached. It is possible to obtain an excellent cleaning action and protection action against foreign matters. Furthermore, since the generation of turbulence and vortices in the jet 71 is suppressed, the vibration of the windshield 14 and the like due to the jet 71 is reduced, and noise when using the window glass cleaning protection device 4 can be suppressed.

  Further, since the flow rectifying body 70 is provided at the outlet 15, the compressed air is rectified with a simple structure in which the rectifying plate 70 a and the like are simply attached to the outlet 15 without using an advanced air control mechanism or the like. A region in a substantially laminar flow state can be formed inside, and the manufacturing cost of the window glass cleaning protection device 4 can be reduced, and the assembling property and the maintenance property can be improved.

Next, another embodiment of the jet forming mechanism will be described with reference to FIGS.
In the jet forming mechanism 25, a suction port 24 is provided at the front portion of the roof 23, and the suction port 24 is bent substantially parallel to the surface of the windshield 14 and faces the blower port 15. Be placed. A pump 42 is connected to the pipe 41 communicating with the suction port 24. When the pump 42 is operated, a strong air flow 73 is generated around the suction port 24 due to the suction air flowing into the suction port 24. The air flow 73 is generated and the jet flow 72 is forcibly guided to the suction port 24 while forming a region of a substantially laminar flow state while being confined in the potential core. Since the jet 72 has a region in a substantially laminar flow state as described above, turbulent flow and vortex are hardly generated and diffused, and the potential core can be secured stably over a long distance.

  That is, since the suction port 24 is disposed opposite to the air outlet 15 and the jet 72 is formed between the air inlet 24 and the air outlet 15, the air flow 73 of the suction air flowing into the air inlet 24 is used. Further, the formation of the substantially laminar flow region in the jet 72 can be further promoted, the generation of turbulence and vortices in the jet 72 can be suppressed, and the cleaning action and protection action against foreign matters can be further improved. it can.

  Further, in the jet flow forming mechanism 25, when the air volume / velocity of the air outlet 15 is too larger than the air volume / air speed of the suction port 24, excess compressed air of the jet 72 flows out to the surroundings and pushes back the air flow 73. As a result, the jet 72 becomes unstable. On the contrary, when the air volume / velocity of the air outlet 15 is too small than the air volume / air speed of the air inlet 24, the air flow 73 is too strong and the turbulent flow tends to occur in the jet 72. Accordingly, the region of the substantially laminar flow state may be stably formed in the jet flow 72 by making the air volume / velocity of the air outlet 15 substantially equal to the air volume / air speed of the suction port 24.

  That is, since the air volume and velocity of the compressed air blown out from the outlet 15 are substantially equal to the air volume and velocity of the suction air sucked into the suction port 24, a region in a substantially laminar flow state is formed in the jet 72. It can form more stably and can further improve the washing | cleaning action and protective action with respect to a foreign material.

  Further, in the jet forming mechanism 25, an air supply hood 43 disposed in front of the radiator 47 may be connected to the pump 42 via a return pipe 45, and the suction air sucked from the suction port 24 is supplied. The air supply hood 43 may be sent out so that cooling air can be blown from the air supply hood 43 to the radiator 47. Thereby, cold outside air is mixed into the compressed air blown out, or suction air composed of low-temperature compressed air or the like rapidly cooled by the outside air can be blown to the radiator 47, and cooling of the radiator 47 can be promoted. it can.

  That is, since the suction air sucked into the suction port 24 is returned to the radiator 47, cooling by the low-temperature suction air proceeds, and only the outside air flowing in at low speed from the vent hole 12a opened at the front of the vehicle body. Compared with the case of air cooling, the heat exchange efficiency is greatly improved, and the water cooling efficiency of the engine 2 by the radiator 47 can be further increased.

  The present invention is not limited to vehicle window glass such as automobiles, dump trucks, power shovels and other construction machines, trucks, combine tractors, and other agricultural machines, but also various snow melting devices, for example, devices that melt snow on road surfaces and snow on residential windows. It can also be applied to.

1 is a side view of a vehicle showing an overall configuration of a window glass cleaning protection device according to the present invention. It is a side view of a bonnet which shows a supply mechanism. It is side surface partial sectional drawing of a bonnet which shows the supply mechanism provided with the switching valve. It is side surface partial sectional drawing of a bonnet which shows the supply mechanism provided with the motor. It is side surface partial sectional drawing of a bonnet which shows the supply mechanism of 2nd Example. It is side surface partial sectional drawing of a bonnet which shows the supply mechanism of 3rd Example. It is side surface partial sectional drawing of a bonnet which shows the supply mechanism from which arrangement | positioning structure differs in 3rd Example. It is explanatory drawing which shows a jet flow formation mechanism. It is explanatory drawing which shows the jet formation mechanism of another Example. It is a side partial sectional view of a bonnet in the case of recirculating suction air.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 * 58 Engine 4 Window glass washing | cleaning protection apparatus 5.30a Supply mechanism 14 Window glass 15 Outlet 22 Supercharger 24 Inlet 47 Radiator 48 * 59 * 61 * 67 Blower 48b * 62b Exhaust outlet 52 Switching mechanism 62 Duct 63 Air guide 68 Generator 70 Rectifier 71/72 Jet

Claims (13)

  In a window glass cleaning and protection device that blows compressed air from the outlet to the window glass of the vehicle to remove foreign matter on the surface of the window glass or prevent foreign matter adhesion, cooling after passing through a water-cooling radiator for the vehicle engine A window glass cleaning and protecting device comprising a supply mechanism capable of supplying wind as the compressed air.   The supply mechanism includes the radiator and a blower for blowing the cooling air to the radiator, and the radiator is disposed on an intake side of the blower, and an exhaust port of the blower is connected to the blower outlet. The window glass cleaning protection device according to claim 1.   The window glass cleaning and protecting device according to claim 2, wherein an engine is interposed between the radiator and the blower.   The supply mechanism includes the radiator and a blower for blowing the cooling air to the radiator. The radiator is disposed on the exhaust side of the blower, and the duct is disposed on the opposite side of the blower with the radiator interposed therebetween. The window glass cleaning protection device according to claim 1, wherein an exhaust port of the duct is communicated with the air outlet.   The window glass cleaning protection device according to claim 4, wherein an air guide is provided between the blower and the duct to guide the cooling air into the duct.   The window glass cleaning protection device according to claim 4 or 5, wherein an engine is interposed between the blower and the duct.   A switching mechanism capable of switching a delivery destination of the compressed air discharged from the exhaust port to at least one of the outlet, the engine periphery, the engine supercharger, and the generator provided in the vehicle; The window glass cleaning protection device according to claim 2, wherein the window glass cleaning protection device is provided.   The window glass cleaning and protecting device according to any one of claims 2 to 7, wherein the blower is a radiant flow blower.   The region of a substantially laminar flow state along the surface of the window glass is formed in a jet composed of compressed air ejected from the blowout port. Window glass cleaning protection device.   The window glass cleaning protection device according to claim 9, wherein a rectifier is provided at the air outlet.   11. The window glass cleaning and protecting device according to claim 9, wherein a suction port is disposed opposite to the air outlet, and the jet is formed between the air inlet and the air outlet.   12. The window glass cleaning and protecting device according to claim 11, wherein an air volume and an air speed of the compressed air blown from the air outlet are substantially equal to an air volume and an air speed of the suction air sucked into the air inlet.   The window glass cleaning protection device according to claim 11 or 12, wherein the suction air sucked into the suction port is caused to flow back to the radiator.

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