Mask-type filter device for vehicle

Abstract

To provide a mask type filter device for an emergency vehicle capable of securing stable traveling by taking measures against volcanic ash in the emergency vehicle to be dispatched when eruption of volcano occurs.SOLUTION: The mask type filter device for the vehicle closes a vent hole of the vehicle having an engine room in a vehicle body front part and provided with the vent hole communicating with the engine room on a vehicle body tip surface. The mask body includes a main filter unit formed of a filter material, a vehicle body fitting unit coupled to an outer peripheral end of the main filter unit and formed of an elastic flexible member, an adhesive unit provided on an outer peripheral end of a surface of the main filter unit, and a sub-filter unit detachably attached to the adhesive unit at a predetermined interval from the surface of the main filter unit outside the main filter unit.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a dust mask device for use in a vehicle, and more particularly to an emergency mask-type filter device for use in a vehicle during volcanic ashfall. [Background technology]

[0002] In recent years, the maintenance of stable operation of emergency vehicles and measures to prevent vehicle breakdowns, especially in the event of a large-scale volcanic eruption, have been discussed as important issues.

[0003] Considering the natural disaster situation surrounding Japanese society, volcanic eruptions and the resulting earthquakes continue to occur, and it is said that in Japan, a volcanic nation, it would not be surprising if a large-scale volcanic eruption were to occur at any time and in any place.

[0004] Currently, there are approximately 111 active volcanoes in Japan, of which approximately 50 are recognized as being subject to observation and monitoring as part of volcanic disaster prevention measures.

[0005] These volcanoes are deemed to require the strengthening of monitoring and observation systems for volcanic disaster prevention, and for example, the Volcanic Eruption Prediction Coordinating Committee constantly monitors them for signs of eruption. However, when a volcanic eruption actually occurs, emergency disaster prevention activities and measures are required immediately, and in particular, emergency vehicles must be requested to be mobilized, so these emergency vehicles must always be on standby in case of an emergency.

[0006] For example, in disaster prevention and emergency response in the event of a volcanic eruption in various parts of Japan, such as a volcanic eruption of Mount Fuji, it has been pointed out that an urgent issue is the need to ensure the safe operation of emergency vehicles when volcanic ash falls.

[0007] In order to quickly ensure the safe operation of emergency vehicles in environments such as when volcanic ash or dust ash falls, it is necessary to take disaster prevention safety measures in advance, and to ensure that in the event of an emergency, various emergency disaster prevention activities can be carried out smoothly.

[0008] Therefore, in order to enable emergency response even when the height of ashfall from a volcanic eruption is between 1mm and 10mm, it has been proposed to develop various mask-shaped volcanic ash filters for vehicles, which are necessary for emergency vehicles to deal with volcanic ash, so that emergency vehicles such as ambulances, fire engines, police and fire department vehicles can respond quickly and smoothly.

[0009] In other words, the equipment is designed to allow emergency vehicles to instantly attach various mask-shaped volcanic ash filters, which are necessary in an emergency, and will enable full emergency rescue operations even until emergency vehicles are unable to move due to continued ashfall.

[0010] In other words, there was a demand for the development of a mask-type volcanic ash filter for various vehicles that would allow emergency vehicles to drive safely and carry out rescue operations up to a time when the ash level was about 10 mm, and that could be fitted in 5 to 8 minutes or less.

[0011] Incidentally, emergency vehicles are required to be equipped with special tire chains for volcanic ash so that they can travel when the ash pile is less than 10 mm high. Changing tires after an emergency occurs would take too long to dispatch, making them useless, so it is important that the chains can be fitted quickly and immediately.

[0012] Furthermore, emergency vehicles required to be deployed in the event of a volcanic eruption must be equipped with tires capable of running through volcanic ash piles up to a height of 10-plus mm. Because tires deteriorate even when worn under normal circumstances, it is desirable to have tires that can be worn in a short time only in the event of an emergency, and not used under normal circumstances.

[0013] In this case, damage to the road caused by attached ties or equipment will be excluded, and the requirement for drivability on volcanic ash will take priority.

[0014] It is also desirable to develop tire chains specifically for driving on volcanic ash roads. Preferably, these tire chains are ready to be installed and have high toughness specifications.

[0015] However, the most important aspect of this invention is the proposal of a mask-type filter device for vehicles that can be immediately fitted with a volcanic ash air filter, which prevents volcanic ash from entering the vehicle engine carburetor and ensures a safe supply of cooling air to the radiator at all times, allowing for smooth engine operation.

[0016] In normal times, the mask device is not used because there is a risk of it becoming clogged with general atmospheric dust when worn, and it is designed to be worn for a short time only in emergencies.

[0017] Furthermore, regular training on how to wear them and equipment management are also important management items. That is, it is important to prevent falling volcanic ash from obstructing visibility through the windshield and to continuously ensure clear visibility through the windshield, and measures to prevent obstruction of visibility through the windshield due to fine particles contained in volcanic ash are also important.

[0018] This will ensure a long-term supply of windshield washer fluid without consuming large amounts, and will also allow for the installation of a washer tank switchable for volcanic ash in the event of an eruption. [Prior art documents] [Patent documents]

[0019] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-57894 Summary of the Invention [Problem to be solved by the invention]

[0020] The present invention has been devised to address the above-mentioned conventional problems, and aims to provide a mask-type filter device for emergency vehicles that is equipped with volcanic ash countermeasures and can ensure the safe operation of emergency vehicles when emergency vehicles must be dispatched in the event of a volcanic eruption, for example.

[0021] In this invention, a dust filter for emergency vehicles in the event of a volcanic eruption is formed, for example, by making emergency vehicles affix filter masks for protection against volcanic ash. That is, to enable emergency vehicles to travel safely in the event of volcanic ash fall, a mask-type volcanic ash dust filter can be attached, for example, to the engine compartment provided in the front of the vehicle body.

[0022] Incidentally, one of the potential dangers that can occur when operating emergency vehicles during volcanic ash fall, such as in the event of a volcanic eruption of Mount Fuji, is that the volcanic ash may get into the engine compartment and clog the air flow path of the engine's carburetor.

[0023] Volcanic ash can also cause problems such as overheating due to clogged radiators and clogging of various air filters used in engines, rendering emergency vehicles unable to move.

[0024] In addition, volcanic ash accumulates on the windshield, blocking the driver's view and hindering safe driving.

[0025] Therefore, in this invention, measures were taken to maintain the safe running of emergency vehicles. First, a mask-type volcanic ash filter device was installed in the front engine section.

[0026] However, when the volcanic ash is dry, the mask-type volcanic ash filter device can smoothly capture and maintain its self-help pressure loss recovery function. However, when the volcanic ash is wet, the wet volcanic ash sticks to the filter device, increasing the pressure loss of the filter material that makes up the filter device. This increases the pressure loss of the filter device, resulting in an insufficient air volume being sent from the vent to the engine compartment. This is why it is necessary to take measures to deal with this situation.

[0027] Here, we will discuss the environmental changes in road conditions for emergency vehicles during volcanic ash fall. First, we will discuss driving in dry conditions, that is, when the road environment is dry and the volcanic ash is also dry.

[0028] When dealing with volcanic ash in a clear, dry environment, emergency vehicles will be driving in a road environment where the air is dry and various types of volcanic ash particles are flying around, and large amounts of various types of volcanic ash and dust will enter the outside air intake (vent) located at the front of the vehicle.

[0029] In such driving conditions, it is necessary to ensure a sufficient amount of air for radiator cooling and engine combustion, so in order to delay clogging of the vents as much as possible, it is necessary to shut out a certain amount of dust such as volcanic ash and dust particles.

[0030] When driving in dry volcanic ash conditions, a large amount of various volcanic ash particles will accumulate on the surface of the filter material. Therefore, by combining a filter with a relatively large mesh opening that can be easily removed with a special filter filter material designed for filtering volcanic ash, the large volcanic ash particles are reflected and bounced back by the relatively large filter with a removable mesh opening. A filter specifically for volcanic ash is installed to protect the engine compartment from volcanic ash particles with a particle diameter larger than a certain size, preventing the radiator and engine carburetor combustion system filters from clogging in a short period of time and causing stalls and other problems.

[0031] However, the filter used here is specifically for volcanic ash and is made of a special filter material that is difficult for dust to adhere to and can be easily washed and removed, as part of the Nanpu series of patents already held by the applicant.

[0032] This special filter media is available in a variety of types and series to suit various conditions such as the state of volcanic eruptions, particle size of the air erupted, wind direction, etc., allowing for multiple types to be selected and quickly changed.The design also emphasizes responsiveness so that the media can smoothly respond to and keep up with the ever-changing natural phenomena.

[0033] When emergency vehicles are driven continuously, a large amount of volcanic ash accumulates on the filter media, gradually increasing the pressure loss in the filter media, leading to a lack of cooling air for the radiator and a lack of air for engine combustion. However, when driven in dry conditions, the special filter media repels the volcanic ash, and the vibrations caused by driving activate the self-recovery and regeneration function of the filter media, delaying the increase in pressure loss.

[0034] However, if the filter becomes clogged during operation and the pressure loss rises to a level of 250 to 300 PA, the surface of the primary volcanic ash filter should be tapped with a maintenance brush to remove most of the volcanic ash buildup before the vehicle can be driven again.

[0035] Next, we will discuss the driving of emergency vehicles in wet conditions. For example, when humidity is high, light rain is falling, and the volcanic ash is wet, or when driving in heavy rain, i.e., when the filter is wet due to heavy rain.

[0036] The driving was carried out in rainy conditions. In heavy rain, the surface properties of the filter, which is made of the special filter material according to the present invention, allow it to be naturally washed by large amounts of rainwater. However, cases in which careful maintenance is required include spring rain, when the condition is simply wet and the humidity is high, and there is dust and ash fall.

[0037] If these conditions continue for a long time, it is expected that the wet dust will adhere and accumulate on the surface of the volcanic ash filter.

[0038] However, when a certain amount of dust has accumulated, cleaning is necessary. In this case, the surface of the primary filter, which is a double-layered front volcanic ash filter, is brushed for maintenance purposes to restore pressure loss. However, the frequency of this cleaning can vary depending on the state of volcanic ash fall, and is proportional to the conditions of volcanic ash blowouts due to natural eruptions, as well as rainfall and humidity.

[0039] The key point in the dual volcanic ash filter configuration mentioned above, which is designed to accommodate driving in rainy and humid conditions, is that there is an appropriate amount of space between the primary and secondary filters, providing an appropriate amount of clearance, which helps reduce the degree of volcanic ash dust clogging and reduces pressure drop increases, and also improves the filter's cleanability.

[0040] In order to achieve the suppression of large particles of sand and dust from WET clogging due to the running of this double spatial clearance structure, various disguise has been applied to the volcanic ash equipment to make the front part follow the shape of the vehicle body and to realize the functional rationality of the unit, but it is also flexible.

[0041] The volcanic ash filter cover sheet material, the volcanic ash main filter medium frame (commonly known as a frame) held by it, and the main volcanic ash filter medium body installed inside are set on the vehicle body side.

[0042] On the other hand, a primary filter is set on the primary side to block coarse volcanic ash particles, and larger particles of sand are blocked. In most cases, this is addressed by brush cleaning and maintenance of the coarse primary filter on the outer primary side.

[0043] However, this primary filter is attached to the outside and is designed to be easily attached and detached, allowing for flexible replacement, and can be replaced immediately depending on the volcanic ash situation. [Means for solving the problem]

[0044] The vehicle mask-type filter device according to the present invention is A mask-type filter device for a vehicle that has an engine compartment in a front portion of the vehicle body and an air vent communicating with the engine compartment provided on a front end surface of the vehicle body, the mask-type filter device for a vehicle that covers the air vent of the vehicle, The vehicle mask-type filter device is a mask body that closes the ventilation hole; and a mounting part that mounts the mask body to a vehicle body; The mask body has a main filter section made of a filter material, a vehicle body fitting section joined to the outer peripheral edge of the main filter section and formed of a stretchable flexible member, an adhesive section provided on the outer peripheral edge of the surface of the main filter section, and a sub-filter section detachably attached to the adhesive section on the outside of the main filter section with a predetermined gap between it and the surface of the main filter section. It is characterized by the fact that or A mask-type filter device for a vehicle that has an engine compartment in a front portion of the vehicle body and an air vent communicating with the engine compartment provided on a front end surface of the vehicle body, the mask-type filter device for a vehicle that covers the air vent of the vehicle, The vehicle mask-type filter device is a mask body that closes the ventilation hole; and a mounting part that mounts the mask body to a vehicle body; The mask body has a main filter section made of a filter material, a vehicle body fitting section joined to the outer peripheral edge of the main filter section and formed of a stretchable flexible member, an adhesive section provided on the outer peripheral edge of the surface of the main filter section, and a sub-filter section detachably attached to the adhesive section on the outside of the main filter section with a predetermined gap between it and the surface of the main filter section, The sub-filter section has a mesh size larger than that of the main filter member. It is characterized by the fact that or A mask-type filter device for a vehicle that has an engine compartment in a front portion of the vehicle body and an air vent communicating with the engine compartment provided on a front end surface of the vehicle body, the mask-type filter device for a vehicle that covers the air vent of the vehicle, The vehicle mask-type filter device is a mask body that closes the ventilation hole; and a mounting part that mounts the mask body to a vehicle body; The mask body has a main filter section made of a filter material, a vehicle body fitting section joined to the outer peripheral edge of the main filter section and formed of a stretchable flexible member, an adhesive section provided on the outer peripheral edge of the surface of the main filter section, and a sub-filter section detachably attached to the adhesive section on the outside of the main filter section with a predetermined gap between it and the surface of the main filter section, The sub-filter section has a mesh size larger than that of the main filter member, The sub-filter section is configured to be cleanable or replaceable with another sub-filter section. It is characterized by the fact that or The adhesive portion is formed by a hook-and-loop fastener. It is characterized by the fact that or The predetermined interval is formed by providing a spacing member in the main filter section and / or the sub-filter section. It is characterized by the following. [Effects of the Invention]

[0045] The present invention has the excellent effects of enabling emergency vehicles to be dispatched and continue operating during a volcanic eruption even during volcanic ash fall, preventing the engine of the emergency vehicle from stalling due to falling volcanic ash, preventing volcanic ash from being sucked into the engine compartment and clogging of the radiator or carburetor due to volcanic ash, and making it possible to clean and maintain the volcanic ash filter when the vehicle is temporarily stopped while traveling. [Brief explanation of the drawings]

[0046] [Figure 1] FIG. 1 is an explanatory diagram (1) illustrating a schematic configuration of the present invention. [Figure 2] FIG. 2 is an explanatory diagram (2) for explaining the schematic configuration of the present invention. [Figure 3] FIG. 1 is an explanatory diagram illustrating a state in which the present invention is installed in an emergency vehicle. [Figure 4] FIG. 2 is an explanatory diagram illustrating a state in which the present invention is used. [Figure 5] 10 is an explanatory diagram illustrating a connection state between the main filter section and the vehicle body fitting section. FIG. [Figure 6] FIG. 2 is an explanatory diagram illustrating a schematic configuration of a sub-filter section. DETAILED DESCRIPTION OF THE INVENTION

[0047] As can be seen from Figure 3, the present invention is configured as a vehicle mask-type filter device for an emergency vehicle 11 (see Figure 2) that has an engine compartment 1 in the front part of the vehicle body and an air vent 2 communicating with the engine compartment 1 provided on the front end surface of the vehicle body, and that blocks the air vent 2 of the emergency vehicle 11.

[0048] That is, the vehicle mask-type filter device of the present invention comprises a mask body 3 that closes the ventilation opening 2 and an attachment part 4 that attaches the mask body 3 to the body of an emergency vehicle 11.

[0049] The mask body 3 is composed of a main filter section 5 formed from a filter material, a vehicle body fitting section 6 joined to the outer peripheral edge of the main filter section 5 and formed from a stretchable flexible member, a frame 10 having an adhesive section 7 on the surface side provided at the outer peripheral edge of the surface of the main filter section 5, and a sub-filter section 8 having an adhesive section 7 on the outside of the main filter section 5 with a predetermined distance from the surface of the main filter section 5 and detachably attached to the adhesive section 7.

[0050] The adhesive part 7 is formed on the surface side of the picture frame 10, which will be described later. That is, a member with an adhesive structure such as a hook-and-loop fastener is provided on the surface of the picture frame 10, and this forms the adhesive part 7, which adheres the adhesive part 7 provided on the sub-filter part 8 to the surface of the main filter part 5, and is attached in a detachable manner so that it can be easily removed.

[0051] Here, it is preferable that the mesh size of the sub-filter portion 8 is larger than that of the main filter portion 5 .

[0052] As described above, the main filter unit 5 and the sub-filter unit 8 are provided with adhesive members 7, and the sub-filter unit 8 is configured to be easily attached to and detached from the main filter unit 5. After removing the sub-filter unit 8, it can be easily cleaned by brushing it with a brush or the like, or it can be replaced with another sub-filter unit 8.

[0053] Here, a vehicle body fitting portion 6 is connected to the outer periphery of the main filter portion 5. The base material of the vehicle body fitting portion 6 may be a combination of various synthetic fiber materials used for stockings, for example.

[0054] For example, it is made of a combination of synthetic fiber materials such as nylon, polyester, acrylic, polyurethane, etc. These are stretchable fibers, and even if there are differences in the body shape of the emergency vehicle 11, they can be designed with specifications that easily follow the shape of the body of the emergency vehicle 11, such as the front bumper, rear bumper, truck front cover, and bus engine parts, and can also be designed to easily follow the body shape of the emergency vehicle 11, such as a fire engine, ambulance, or police car.

[0055] Furthermore, by connecting an attachment part 4 consisting of, for example, a fixed band string or rubber band wire with a length adjustment function to the four corner ends of the vehicle body fitting part 6 and tying the tip side of this attachment part 4 to a predetermined location on the emergency vehicle 11, the vehicle mask-type filter device of the present invention can be securely and easily attached to emergency vehicle bodies 11 of various shapes.

[0056] Next, the configurations of the main filter portion 5 and the sub-filter portion 8 that constitute the mask body 3 will be described.

[0057] The main filter part 5 is made of a filter material generally used in filters, and the main filter part 5 in the present invention is formed in a substantially rectangular shape.

[0058] The main filter section 5 of the present invention is sewn and bonded to the body fitting section 6 using, for example, Suminoe monofilament material or polyurethane material, and is firmly connected to the synthetic fiber filter base fiber that constitutes the body fitting section 6 (see Figure 1).

[0059] The main filter section 5 has a substantially rectangular shape, and the vehicle body fitting section 6 is disposed so as to surround the main filter section 5, so that the overall configuration is also substantially rectangular.

[0060] 1, the frame 10 attached to the outer periphery of the main filter section 5 may be formed by bending both vertical frames in a mountain shape. This configuration allows the mask body 3 of the present invention to be attached to the tip of the body, which has large irregularities, without creating gaps.

[0061] A recommended example of the main filter section 5 is a filter material manufactured by Suminoe, which is molded into a generally flat shape. As the generally flat filter material is thought to have relatively low tensile strength, a durable frame 10 is provided to surround the main filter section 5 in order to protect it from the tensile loads applied from the four corners.

[0062] Here, the method of connecting the material constituting the picture frame 10 to the filter material constituting the main filter section 5, which is a material that has tensile strength from the four corners as well as some flexibility, can be done using adhesive and / or, for example, an aluminum metal stapler, but is not limited to this.

[0063] As described above, the mask body 3 of the present invention is constructed in a double layer by the main filter portion 5 and the sub-filter portion 8. The reason for this construction will be explained.

[0064] To run, emergency vehicle 11 needs air to cool the radiator and air to burn the engine. It is important to avoid stalling due to overheating caused by a lack of cooling air.

[0065] It is also necessary to prevent dust from clogging the air carburetor filter used for engine combustion.

[0066] Therefore, in order to maintain the continuous operation of the BCP of the emergency vehicle 11, it is necessary to maintain an appropriate amount of cooling air and appropriate air quality for combustion.

[0067] In this invention, in order to slow down clogging of the volcanic ash filter, the sub-filter section 8 attached to the outside is designed to block large particles of volcanic ash, by repelling them before they reach the main filter section 5 attached to the inside.

[0068] Therefore, only dust particles of 500μ to 1000μ or less reach the main filter section 5, which is the inner volcanic ash filter.

[0069] The sub-filter section 8, which is an outer mask-type filter located just before the pressure loss limit, is designed to be able to be brushed and cleaned using a quick brush or the like, and the sub-filter section 8 is also designed to be able to be replaced with another sub-filter section 8, thereby preventing volcanic ash with a relatively large particle size from reaching the main filter section 5 attached inside.

[0070] In order to block volcanic ash particles of various sizes and maintain air quality, the structure is designed so that the sub-filter section 8 attached to the outside blocks medium to large particles that get stuck in the carburetor combustion system, while the main filter section 5 attached to the inside captures small volcanic ash particles, for example, 165 to 207 μm or less in particle size.

[0071] That is, larger particles of volcanic ash, 500μ to 1000μ or more in size, are blocked out by the outer sub-filter section 8.

[0072] Large particles of volcanic ash are processed in the sub-filter section 8, while small particles of volcanic ash are captured and processed in the inner main filter section 5.

[0073] Naturally, the outer sub-filter section 8 quickly becomes clogged due to the capture of volcanic ash, so as already explained, the sub-filter section 8 should be brush-flushed and cleaned during or after driving depending on the situation.

[0074] The device of the present invention was invented and developed as a device that can be fitted with a mask-type filter device with a double structure consisting of a main filter section 5 and a sub-filter section 8 to respond to such emergencies in a short time, and that can continue to operate as an emergency vehicle 11 even in the event of a volcanic eruption.

[0075] Incidentally, the volcanic ash filter in the main filter section 5 is the so-called Nanpu series of patented filters acquired by the applicant of this application, and is recommended for use.

[0076] The sub-filter section 8 also functions as a protective filter for the volcanic ash main filter section 5, and functions as a filter that blocks large particles of volcanic ash.

[0077] In other words, the sub-filter section 8, located outside the front entrance, blocks and captures roughly medium to large sized volcanic ash dust particles without soiling the main filter section 5, which is a patented product of the so-called Nanpu series of filters mentioned above, and is designed to be detachable if it becomes clogged, making it a device that can be quickly cleaned with a brush and quickly replaced.

[0078] In this way, the filter device of the present invention protects against volcanic ash, which consists of particles of various sizes, with a double filter layer membrane.

[0079] Furthermore, the mask-type filter device of the present invention is configured as a flexible mask, and the flexible mask-shaped filter cover can conform to the shape of various vehicle fronts, etc., and can prevent volcanic ash, dust, etc. from entering the engine room.

[0080] The frame 10 functions as an outer frame (such as a thin vinyl thin film plate) that protects the main filter section 5, which is made of a filter material, and its thickness can be selected from approximately 1 mm to 2 mm to 5 mm. It can be manufactured in a manner that is suitable for the front shape of the vehicle and the required degree of flexibility.

[0081] Furthermore, as already mentioned, the aforementioned vehicle body fitting portion 6 is made of a flexible material that can conform to the shape of the vehicle body, preventing volcanic ash from entering the engine compartment of the vehicle body and ensuring the positioning and fit of the mask-type filter device.

[0082] This is because various emergency vehicles 11 have various concave and convex design curves, and in order to mount the vehicle mask-type filter device and fit it to the front shape of the body, it is necessary for it to follow the shape of the front part of the body.

[0083] Therefore, the vehicle body fitting portion 6, which is a sealing cover, is made of a flexible material and is made of a highly elastic seat cover material with fine holes that prevent the passage of medium to large particles of volcanic ash.

[0084] Furthermore, the components that make up the sub-filter section 8 are preferably basically made of flexible materials that can conform to the shape and have a structure with a moderately dense mesh. For this reason, a combination of flexible synthetic plain weave and twill weave materials is preferred, and materials that can prevent medium- and large-particle volcanic ash from directly entering the ENG room are preferred.

[0085] As already explained, the frame 10, which serves as both a connecting material between the filter material constituting the main filter section 5 and the vehicle body fitting section 6 attached so as to surround the main filter section 5 and also as a frame member, is preferably made of a material that can protect the filter material as a special volcanic ash filter such as the main filter section 5, can distribute the strength of the filter material, and also has flexibility to allow it to conform to a certain degree of shape.

[0086] The frame member, i.e., frame 10, which also functions as a connecting member for the vehicle mask-type filter device, requires a certain level of strength to protect the filter material that makes up the main filter section 5 in the center for capturing volcanic ash, and is made of a material that can withstand tensile strength against pulling forces from multiple directions.

[0087] This allows for weight distribution, prevents excessive opening damage to the main filter portion 5, and is also able to adequately withstand the pulling force from the attachment portion 4.

[0088] In other words, the provision of the frame 10 reliably protects the filter element's function as a volcanic ash filter, maintaining its functionality, and also contributes to the filter element's ability to conform to the shape of the vehicle body at the front portion 6 of the vehicle body.

[0089] Therefore, in terms of the folding method of the cover material fibers that make up the picture frame 10, although it is mainly made using plain weave, in response to requests for some flexibility, for example, it is made up of a double structure of plain weave and twill weave with a material joining structure by folding over, and is made up as a picture frame 10 that is a connected cover material with a certain degree of heat resistance and tensile strength around the ENG.

[0090] Furthermore, the surface of the picture frame 10 has an adhesive section 7 made of hook-and-loop fastener or the like, and by pressing the adhesive section 7 made of hook-and-loop fastener of the sub-filter section 8 against this surface, the adhesive section 7 of the outer coarse sub-filter section 8 can be quickly and reliably adhered to the adhesive section provided on the surface of the picture frame 10 made of hook-and-loop fastener, and can also be easily detached.

[0091] Next, in the present invention, a protrusion 9 having a height of, for example, 12 mm or more is attached to the sub-filter section 8 and / or main filter section 5 between the sub-filter section 8 (outer filter) and the main filter section 5 (inner filter), thereby creating a gap of approximately 24 mm or more between 5 and the sub-filter section 8.

[0092] The presence of these gaps is extremely important because they can prevent an increase in filter pressure loss in the main filter section 5 and the sub-filter section 8. This is because they are expected to have the effect of further improving the volcanic ash capture rate.

[0093] As can be seen from Figures 5 and 6, the protrusions 9 on the main filter section 5 side are configured in vertical lines, and the protrusions 9 on the sub-filter section 8 are configured in horizontal lines.

[0094] As a result, the shape where they intersect is roughly cross-shaped, and a clearance of, for example, 24 mm or more can be secured between the main filter section 5 and the sub-filter section 8.

[0095] The protrusions 9 on the sub-filter section 8 side are provided on the lining of the outer coarse filter, and the protrusion line is, for example, 10 mm wide and 12 to 14 mm high.

[0096] The protrusions 9 on the main filter part 5 side are protruded from the surface side of the main filter part 5 and are configured as a protrusion line of protrusions 9 extending vertically, for example, 10 mm wide x 12 to 14 mm high.

[0097] These protrusions 9 are crossed, i.e., the vertical and horizontal protrusions 9 are crossed to create a predetermined gap between the main filter section 5 and the sub-filter section 8, creating a space (gap) with a predetermined volume between them.

[0098] This space plays an extremely important role in capturing volcanic ash with the double-layered mask body 3.

[0099] Even if the pressure loss rate of the two filter sections 5, 8 increases due to a large amount of volcanic ash fall, the provision of the above-mentioned space (gap) makes it possible to prevent a sudden increase in the pressure loss rate of the two filter sections 5, 8, and also makes it possible to introduce air from the outside into the engine compartment through the air vent for a relatively long period of time.

[0100] Next, the running state of the emergency vehicle 11 using the present invention in wet conditions during volcanic ash fall will be described.

[0101] When driving in road environments where volcanic ash particles range from small, at 60 to 100μ, to medium levels of 250-500-1000μ, and large levels of 1000μ or more, at 3000-16000μ or more, a large amount of volcanic ash can enter the fresh air intake of the emergency vehicle 11, making it important to maintain the air environment of the emergency vehicle 11.

[0102] Even in the above situation, it is necessary to ensure air for cooling the radiator and for combustion in the engine.

[0103] When driving in heavy rain, the filter will naturally self-clean due to the large amount of rainwater, but in a light rainy season wet environment, the surface of the filter is wet with humidity and moist volcanic ash particles, making it very easy for them to adhere to the filter media, and because the amount of rainwater is small, the self-cleaning function does not work, so a large amount of volcanic ash particles will accumulate on the surface of the filter media.

[0104] Therefore, flat volcanic ash filters, which have a limited surface area, quickly become clogged in a short period of time, which increases pressure loss and leads to a lack of cooling air for the radiator and a lack of air for combustion in the engine.

[0105] To prevent these malfunctions, it is necessary to prolong the clogging of filters by wet volcanic particles as long as possible, which means that the lifespan of volcanic ash filters in emergency vehicles 11 needs to be extended.

[0106] In dry conditions, as mentioned above, the self-regenerating action prevents a sudden rise in pressure loss, and the self-recovery action of pressure loss due to the moderate reflection, falling action, and falling due to vibrations caused by running of volcanic ash particles works to enable long periods of running, but when there is little rain, the accumulation time of volcanic ash is shorter, so WET measures are necessary when there is little rain.

[0107] Conversely, in heavy rain environments, rainwater becomes clean water and the volcanic ash particles adhering to the volcanic ash filter can be expected to self-clean and regenerate due to vibrations from driving, so the challenge is to deal with volcanic ash in environments with light rainfall, such as during the rainy season.

[0108] The volcanic ash filter is most effective when cleaned and maintained when washed with water. One possible method is to spray washer fluid onto the volcanic ash while driving while cleaning, but sooner or later the water will run out, so this is only a temporary measure and not a permanent solution, and an appropriate method for restoring the filter's function is required.

[0109] Therefore, the applicant, Unipack, has invented a flexible mask with a unique filter configuration that has a double structure consisting of a main filter section 5 and a sub-filter section 8 for capturing volcanic ash, and also has a specified space (gap) between the two filters, allowing emergency vehicles to drive and work as usual even when volcanic ash falls, with an outside air intake filter structure. [Explanation of symbols]

[0110] 1. Engine room 2 ventilation holes 3 Mask body 4. Mounting part 5 Main filter section 6 Body fitting section 7 Adhesive part 8 Sub-filter section 9 Protruding material 10 Picture Frame 11 Emergency vehicles

Claims

1. A mask-type filter device for a vehicle that has an engine compartment in a front portion of the vehicle body and an air vent communicating with the engine compartment provided on a front end surface of the vehicle body, the mask-type filter device for a vehicle that covers the air vent of the vehicle, The vehicle mask-type filter device includes a mask body that closes the ventilation opening, and an attachment part that attaches the mask body to a vehicle body, The mask body has a main filter section made of a filter material, a vehicle body fitting section joined to the outer peripheral edge of the main filter section and formed of a stretchable flexible member, an adhesive section provided on the outer peripheral edge of the surface of the main filter section, and a sub-filter section detachably attached to the adhesive section on the outside of the main filter section with a predetermined gap between it and the surface of the main filter section. A mask-type filter device for vehicles.

2. A mask-type filter device for a vehicle that has an engine compartment in a front portion of the vehicle body and an air vent communicating with the engine compartment provided on a front end surface of the vehicle body, the mask-type filter device for a vehicle that covers the air vent of the vehicle, The vehicle mask-type filter device is a mask body that closes the ventilation hole; and a mounting part that mounts the mask body to a vehicle body; The mask body has a main filter section made of a filter material, a vehicle body fitting section joined to the outer peripheral edge of the main filter section and formed of a stretchable flexible member, an adhesive section provided on the outer peripheral edge of the surface of the main filter section, and a sub-filter section detachably attached to the adhesive section on the outside of the main filter section with a predetermined gap between it and the surface of the main filter section, The sub-filter section has a mesh size larger than that of the main filter member. A mask-type filter device for vehicles.

3. A mask-type filter device for a vehicle that has an engine compartment in a front portion of the vehicle body and an air vent communicating with the engine compartment provided on a front end surface of the vehicle body, the mask-type filter device for a vehicle that covers the air vent of the vehicle, The vehicle mask-type filter device is a mask body that closes the ventilation hole; and a mounting part that mounts the mask body to a vehicle body; The mask body has a main filter section made of a filter material, a vehicle body fitting section joined to the outer peripheral edge of the main filter section and formed of a stretchable flexible member, an adhesive section provided on the outer peripheral edge of the surface of the main filter section, and a sub-filter section detachably attached to the adhesive section on the outside of the main filter section with a predetermined gap between it and the surface of the main filter section, The sub-filter section has a mesh size larger than that of the main filter member, The sub-filter section is configured to be cleanable or replaceable with another sub-filter section. A mask-type filter device for vehicles.

4. The adhesive portion is formed by a hook-and-loop fastener.

4. A mask-type filter device for vehicles according to claim 1, claim 2 or claim 3.

5. The predetermined interval is formed by providing a spacing member in the main filter section and / or the sub-filter section.

4. A mask-type filter device for vehicles according to claim 1, claim 2 or claim 3.

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