JP2019017754A - Umbrella unfanned by wind - Google Patents

Abstract

To solve problems of an umbrella, problems in which, in rainy days, in trying to open an umbrella in a strong wind, the umbrella is swung around by the wind, with the ribs broken by being fanned by the wind, or with the umbrella turned over by the wind and made useless, as everybody has the experience and in which, with an umbrella open while carrying a package or riding a bicycle, the problem is even worse particularly when an umbrella user is a woman or a child.SOLUTION: The present invention has been devised based on the foregoing, so that, in using an umbrella in a strong wind, rain water leaking inside the umbrella is minimized, and that the extent of being fanned by the wind is reduced as much as possible to maintain the use of the umbrella. The invention, for the purpose of achieving the above objectives, produced a large number of perforations on the surface of a transparent or translucent umbrella. As the wind goes through in and out of the umbrella, the wind pressure is reduced. Also, since seeing through from the inside to the outside of the umbrella is much improved, traffic situation in the surroundings is visible, which contributes to safety.SELECTED DRAWING: Figure 1

Description

The present invention mainly relates to an umbrella which is hard to be blown by the wind on rainy days and snowy days.

(Regarding Patent Documents 1 to 3)
In each of Patent Documents 1 to 3, an air hole mechanism is provided in the central part of the umbrella for escaping the wind blowing from the inside to the outside of the umbrella. It is effective against the wind that blows from the inside of the umbrella to the outside, and it can prevent the umbrella from turning over, but it is ineffective against the wind that blows to the outside of the umbrella, and the umbrella can be broken, It cannot be prevented from being swung around.
In addition, the structure is complicated and expensive, and the umbrella is difficult to repair.

(Regarding Patent Document 4)
Patent Document 4 is similar to the present invention in which a large number of holes are provided in an umbrella, but it is basically an invention related to a parasol, and is naturally a parasol, so it is opaque and a person holding the umbrella is around. A large number of small holes are provided in the umbrella so that can be seen. And it can be used as a rain umbrella by putting a tarpaulin cover on the umbrella.

However, umbrellas with a large number of small holes are waterproof if the size of the hole, the ratio of the total area of the holes to the entire umbrella, and the material, hydrophilicity, and water repellency of the umbrella fabric are appropriate, as in the present invention. It can be used as an umbrella that is not covered with the wind without covering the seat cover, and as in the case of Patent Document 4, it is troublesome to attach and remove it twice if it is used as an umbrella after covering the waterproof seat cover. It has been a hassle, and it must be said that it is completely impractical as an umbrella.

Moreover, although the hole diameter is illustrated in the specification of patent document 4, the porosity which a hole occupies for the whole umbrella is not specified. Therefore, it cannot always be said that there is an effect of ventilation.
Moreover, since it is a parasol, the porosity cannot be increased, and it must be limited to a small constant value or less.

(In the invention of Patent Document 4, the fabric is opaque and contrasted with the present invention)

<Description of related part of Patent Document 4>
"Claims"
[Claim 1] In an umbrella in which a main frame (3) is supported in an openable and closable manner on an umbrella shaft (1) and an umbrella cloth (4) is stretched on the main frame (3), the umbrella cloth (4) It is formed in a net shape having a through hole (7), and the reflectance of light on the front surface of the umbrella cloth (4) is increased, and the reflectance of light on the back surface of the umbrella cloth (4) is lowered. Umbrella.
"0001"
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to an umbrella for avoiding sunlight .
[0004] The present invention was developed in view of the above circumstances, and the object of the present invention is to be able to accurately see far away through the umbrella cloth while reliably blocking the sun . Moreover, it is to provide an umbrella having a cool breeze.
"0005"
[Means for Solving the Problems] In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that the main bone 3 is supported on the umbrella shaft 1 so as to be opened and closed, and the umbrella cloth 4 is stretched on the main bone 3. In this umbrella, the umbrella cloth 4 is formed in a net shape having a large number of through holes 7 to increase the light reflectance of the front surface of the umbrella cloth 4 and to reduce the light reflectance of the back surface of the umbrella cloth 4. It is.
"0007"
[ Effects of the Invention] Further, for example, direct sunlight is reliably reflected on the front surface side of the umbrella cloth 4 and hardly inserted into the back surface side of the umbrella cloth 4. [0008] According to the invention of claim 1, for example, Even if someone tries to see the inside of the umbrella from the outside through the through hole 7 of the umbrella cloth 4, the light reflectance on the surface side of the umbrella cloth 4 is high. Is suppressed.
"0009"
Umbrella in "Embodiments of the Invention" First, FIG. 1 is a so-called parasol used to block the day feed,
[0010] In the above configuration, the present invention forms the umbrella cloth 4 stretched around the main bone 3 into a net-like shape having a large number of through-holes 7, and increases the light reflectance of the surface of the umbrella cloth 4. [0011] Silver is vapor-deposited only on the surface side of the umbrella cloth 4 made of the above mesh fabric to increase the light reflectance on the surface side of the umbrella cloth 4, while the back surface side of the umbrella cloth 4 is the mesh fabric. By keeping this black, the reflectance of light on the back side of the umbrella cloth 4 is lowered.
[0013] In addition, strong sunlight is reliably reflected on the front surface side of the umbrella cloth 4 having a high light reflectivity, and is reliably shielded from light by the umbrella cloth 4 without being almost inserted into the back surface side of the umbrella cloth 4. It effectively fulfills its function as a parasol .
In the embodiment described above, "0015", by depositing silver on the surface side of the umbrella cloth 4 it has been higher light reflectance of the surface side of the umbrella cloth 4 is not limited thereto, for example, aluminum Even if the surface of the umbrella cloth 4 is colored with a color having a high light reflectance such as gold or white with a dye or the like, the light reflectance on the surface side of the umbrella cloth 4 can be increased. Good .
『0018』
[Effect of the invention] Moreover, since the sunlight is reliably reflected on the front surface side of the umbrella cloth 4 and hardly inserted into the back surface side of the umbrella cloth 4, it functions effectively as a parasol .
[0019] According to the invention described in claim 1, for example, even if another person tries to look inside the umbrella from the outside of the umbrella through the through hole 7 of the umbrella cloth 4, the light reflectance on the surface side of the umbrella cloth 4 is high. For this reason, it is difficult for others to see, for example, the face of the person holding the umbrella inside the umbrella, and the privacy of the person holding the umbrella can be protected.

From the above description, in the invention of Patent Document 4, the umbrella fabric material must be completely opaque or opaque. Therefore, in the invention of Patent Document 4, the umbrella fabric material cannot be configured to be transparent or translucent.
On the other hand, in the present invention, the umbrella fabric material is transparent or translucent, and the present invention and the invention of Patent Document 4 are contradictory and incompatible.

(Patent Document 4 is an invention about a parasol and contrasts with the present invention)

<Description of related part of Patent Document 4>
[Claim 2] The umbrella according to claim 1, wherein a waterproof sheet (8) covering the surface of the umbrella cloth (4) is detachable from the umbrella cloth (4).
"0001"
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to an umbrella for avoiding sunlight .
A waterproof sheet 8 covering the surface of the umbrella cloth 4 may be detachable from the umbrella cloth 4 of “0006” or more.
[0008] According to the invention described in claim 2, it is possible to use as a rain umbrella only by attaching the waterproof sheet 8 to the surface of the umbrella cloth 4 .
[0011] In the embodiment shown in the figure, a vinyl chloride waterproof sheet 8 having substantially the same shape as the umbrella cloth 4 is separately formed, and can be fitted to the outer periphery of the waterproof sheet 8 at the tip of the main bone 3. A plurality of caps 81 are provided, and the waterproof sheet 8 is detachably attached to the surface of the umbrella cloth 4 by fitting the cap 81 to the main bone 3, and the surface of the umbrella cloth 4 is covered with the waterproof sheet 8. I am doing so .
[0015] On the other hand, for example, when it rains, the waterproof sheet 8 is covered with the waterproof sheet 8 on the surface side of the umbrella cloth 4 and the cap 81 is fitted to the tip of the main bone 3 so that the waterproof sheet 8 is attached to the umbrella cloth. 4 is attached to the surface of 4 and rainwater can be reliably shielded by the waterproof sheet 8 and can be used immediately as a rain umbrella .
[0019] According to the invention described in claim 2 , the waterproof sheet 8 covering the surface of the umbrella cloth 4 can be attached to and detached from the umbrella cloth 4, so that the waterproof sheet 8 is simply attached to the surface of the umbrella cloth 4. It can also be used as a rain umbrella immediately , and the usability or the versatility of the umbrella increases accordingly.
FIG. 4 is a schematic perspective view of a waterproof sheet .

From the above description, the invention described in Patent Document 4 is an invention related to a parasol, and when used as a parasol, a waterproof sheet is further covered.
In the present invention, the multi-hole umbrella is used as a rain umbrella without using a waterproof sheet or the like, whereas the applicant of Patent Document 4 does not change the invention of Claim 1 of Patent Document 4 as it is. It expresses that it is not assumed that it will be used as an umbrella, and both inventions are also clearly different in the method of use.

That is, since the invention of Patent Document 4 is an invention related to a parasol, the invention of Patent Document 4 naturally has an opaque cloth material. If it is transparent or translucent, the basic utility as a parasol, that is, the effect of avoiding sunlight will be lost. Therefore, the invention of Patent Document 4 and the present invention clearly contradict each other.
In addition, the functions and effects of the multiple holes provided in the umbrella claimed in Patent Document 4 are only that the outside can be seen through from the inside of the umbrella and the effect of ventilation. There is no mention of any blocking effect.

JP 2011-143210 A JP 2006-102392 A JP 2004000431 A JP 10-215927 A

When it is raining, when trying to put an umbrella in the wind, it is swung around by the wind and the umbrella is broken by the wind, the umbrella is turned over by the wind, or the umbrella is no longer used Everyone will have experience. This is especially true if you have a baggage in your hand, a bicycle while you are holding an umbrella, or a child who is holding an umbrella.

The present invention has been made in view of the above. When an umbrella is used under strong winds, the amount of rainwater leaking inside the umbrella is minimized, the degree of wind is reduced as much as possible, and the umbrella is not used. It is to try to squeeze.

In order to achieve the above object, the present invention has a large number of small holes on the surface of an umbrella.
Since wind passes inside and outside the umbrella, the wind pressure applied to the umbrella is reduced. Moreover, rainwater and snow are blocked according to the hole diameter and the number of holes.

(Claims 1 to 4)
In the first to fourth aspects, at least a diameter of 15 mm or less or an area of 177 square millimeters, or a diameter of 10 mm or less or an area of 79 square millimeters, or a diameter of 7 mm or less or an area of 39 square millimeters or less, or a diameter of 5 mm Or less than 20 square millimeters, or 3 mm or less in diameter or 7 square millimeters in area, or 2 mm or less in diameter or 3.1 square millimeters in area, or 1 mm or less in diameter or 0.8 square millimeters in area, or 0.5 mm in diameter or 0.2 square in area Millimeter or less, or diameter 0.2 mm or less or area 0.03 square millimeter or less,
A large number of through-holes with a diameter of less than or less than the hole area are open, and the ratio of the total area of the holes to the total surface area of the umbrella is 10% to 70%, or 20% to 60%, or The variation is in the range of 30% to 60%, or 5% to 40%.
A case where the hole diameter or the hole area has a diameter of 30 mm or less or an area of 707 square millimeters or less, or a diameter of 20 mm or less or an area of 314 square millimeters or less may be added.

The reason why the hole diameter and the hole area are represented in two types is that the hole is not necessarily circular, and the area of the circle having the left diameter is written on the right side and paired.
The ratio of the total area of the hole to the total surface area of the umbrella is 10% to 70%, 20% to 60%, 30% to 60%, 40% to 60%, 50% to 60%, 10% 40% or less, 5% or more and 40% or less, 5% or more and 30% or less, 5% or more and 20% or less.
The rain and snow umbrella of the present invention can take any porosity range or porosity in the porosity range described in the claims.
Of course, the larger the porosity, the better the ventilation but the less rainproof effect. Conversely, the smaller the porosity, the worse the ventilation, but the greater the rainproof effect. It should be selected according to usage and preference.

The larger the hole, the better the ventilation and the less wind resistance, but the more likely it is to leak inside the umbrella. Smaller hole diameter or hole area reduces the possibility of rain leaking inside the umbrella, but increases wind resistance. Balance is necessary. Since the size of the raindrop is approximately 0.2 mm to 6 mm in diameter, when the hole diameter is around 3 mm, the leakage of rain inside the umbrella decreases rapidly. The holes may all be the same size, but need not be.

For an umbrella with a hole having a large hole diameter and hole area, it is easier for the wind to circulate and the resistance of the wind can be greatly reduced. It is a multi-hole umbrella used in strong winds such as during typhoons or in the case of snow.
If it is raining under strong winds such as during a typhoon, not everyone can prepare rain wings. Many people have to go out with an umbrella. In that case, you should avoid the direct hit of rain stronger than some wetness. If it is a main stage umbrella, since the hole diameter is large, clothes etc. will get wet somewhat due to the rain that entered the inside of the umbrella, but since the hole diameter is large, the circulation of the wind is good, so it will be swung by the wind There is no direct hit of heavy rain.
In the case of snow, there is no snow entering the inside of the umbrella without reducing the hole diameter so much. As the hole diameter is larger, the wind flow is better, so snow can be avoided without being swung by the wind.

Furthermore, the ratio of the total area of the holes to the surface area of the umbrella may be too much or too little. Increasing the total area of the holes improves ventilation and reduces wind resistance. However, depending on the hole diameter, there is a possibility of leakage, and the possibility that rainwater that has entered the hole will be blown by the wind toward the face of the person.
On the other hand, if the amount is too small, the possibility of rain leakage and the possibility of rainwater that has entered the hole being blown toward the face of the person by the wind decreases, but the resistance of the wind to the umbrella increases.
The ratio of the hole diameter, the hole area, and the total area of the hole to the total surface area of the umbrella is varied depending on the weather conditions, the use, the difference of men, women, children, the elderly, etc.

Here, “at least” in the claims excludes the presence of holes having a hole diameter or hole area larger than any one of the hole diameters or hole areas listed in the claims. Means no.
In other words, the ratio of the total area of non-standard holes to the total surface area of the umbrella is between 10 minus 7%, 1%, 3%, 5%, etc. Any value or a value greater than 10%.
The reason why the material of the umbrella fabric is transparent or semi-transparent is that when the umbrella is tilted forward in a leaning position under the strong wind, it is easy to see through the umbrella and easily proceed safely.

(About claims 5 to 8)
In claims 5 to 8, the predicate “at least” in claims 1 to 4 is omitted, and “only” is added.
This means that the presence of a hole having a hole diameter or hole area larger than any one of the hole diameters or hole areas recited in the claims is excluded.

(About claim 9)
A lower limit for small holes is provided.

(About claim 10)
In this claim, the hole is provided in the peripheral portion of the umbrella.
Due to the principle of leverage, the wind pressure on the periphery of the umbrella is the main cause of the beating of the umbrella due to the strong wind rather than the wind pressure on the center of the umbrella. Therefore, the umbrella is raised mainly by the resistance of wind applied to the peripheral part of the umbrella, and thus the resistance of the wind applied to the peripheral part of the umbrella is reduced. Pulling it can reduce the wind resistance across the umbrella.
The other is to reduce the possibility and impact of rain leaks. This is because even if rainwater that has entered the hole is blown in the direction of the human face by the wind, it is not so much from the periphery.

(About claim 11)
This claim is for excluding handmade products, handicrafts, crafts, works of art, damaged items, etc. from the invention of this claim. For the purpose of decoration, holes that are opened for the purpose of irrelevant to the object of the present invention are excluded.
It is clarified that the invention of this claim is an industrial product. Unlike industrial products, industrial products can be produced in large quantities in a short time.

When it rains, the wind is often strong. The multi-hole umbrella of the present invention is an umbrella that is rarely drowned in wind and rain.
The multi-hole umbrella of the present invention is an umbrella that filters rainwater and snow under wind and snow and allows only wind to pass through.
The multi-hole umbrella of the present invention hardly leaks rain, is not covered with wind, is transparent and translucent, and can safely confirm the surrounding traffic conditions. It is very effective even in snowy weather.
The present invention allows the umbrella to have a wind path, with minimal rain leakage, rain splash, or no rain leak, no rain splash, wind under strong wind, umbrella reversal, umbrella fracture Is to reduce.

The multi-hole umbrella of the present invention is free from rain leakage and rain splashes in rainy weather and in a windless state. On the other hand, in rainy weather, nobody thinks that they will get wet in the rain with umbrellas under strong winds. Even if there is some rain and rain splashes, avoiding the direct hit of wind mixed with rain is an effect required of an umbrella in such a weather.
Also, the umbrella of the present invention can be used properly depending on the situation and a normal umbrella having no holes. When there is wind even in rainy weather, it is possible to use different types of umbrellas than when there is no wind.
Rainy days, windless days, windy days. Windy day, weak day. Snowy days, windless days, windy days. Windy day, weak day. Rain, snowy day, weak day, perforated umbrella of the present invention, normal non-perforated umbrella, large perforated umbrella, small perforated umbrella, large porosity umbrella, small Use an umbrella and an umbrella with holes in the periphery.

By using rain umbrellas separately on windy days and those with no wind, for example, it is not possible to get wet with rain at all as well as under strong wind typhoons, so use umbrellas with a large hole diameter and umbrellas with a high porosity. It is possible to use it even if it gets wet to some extent, such as preventing the umbrella from being damaged by strong winds and avoiding the soaking of the present day due to rain.
Similarly, on snowy days under strong winds, it does not bother you to get wet with the snow somewhat, so if you use an umbrella with a large hole diameter or an umbrella with a large porosity, It can also be used to prevent damage to the umbrella caused by snow while avoiding direct hits by snow.

In the present invention, by providing a large number of holes in the umbrella fabric, it is not swayed by the wind in an attempt to repel all of the wind pressure as in the case of a conventional umbrella. It is intended to reduce the degree of being swung by the wind.
Of course, in this case, it is even better if there is little or no rainwater that leaks through the umbrella and is blown inside the umbrella by the wind.

If the hole diameter is 6 mm to 0.2 mm or less of the size of raindrops, or the hole area is 28 square millimeters to 0.03 square millimeters or less, rain leakage to the inside of the umbrella, rainwater dripping, rainwater from the wind while maintaining the wind circulation The effect of no splash and no effect becomes remarkable.
Furthermore, the rainwater passing through the hole from a hole diameter of 3 mm or less or a hole area of 7 square millimeters or less drastically decreases, and almost disappears from a hole diameter of 1 mm or less or a hole area of 0.8 square millimeter or less. However, since there is a porosity, the flow of wind is maintained.

The mechanism for preventing rain leakage, dripping, and rain splashing inside the umbrella is as follows.
The present invention has been made based on the knowledge that if the hole is a small hole, dripping from the outside of the umbrella to the inside due to the surface tension and adhesive force of rainwater, and the inside blowing by the wind is minimal, the material of the fabric is In the case of water repellency and hydrophobicity, the smaller the hole is, the more rainwater can enter the inside of the umbrella before it enters the hole due to surface tension. There is little or no rainwater splashing inside the umbrella by rainwater and wind leaking from the umbrella.

Let the hole diameter be 1mm. When there is no wind in the rain, it can be said that there are almost no water droplets of 1mm or less on the outer surface of the umbrella. If it is, it is too light, and it does not move around by itself even if it is attached to the surface of the umbrella and is stationary. Eventually it will only be absorbed by larger drops of water. Since water droplets of 1mm or more cannot pass through the hole, water droplets that pass through the hole with water droplets of 1mm or less are only raindrops that hit the center of the 1mm hole and are rare. When there is wind in rainy weather, it is a wind mixed with raindrops, so water droplets of 1 mm or more are filtered by holes, and eventually it is like a drizzle of about 0.5 mm that permeates through the holes. It will not be a pain.

If the material of the fabric is hydrophilic, rainwater that has entered the inside through the hole will only drop on the ground from the outer periphery of the umbrella through the inner surface of the umbrella, and people will get wet with rainwater. There is no.
Due to the adhesive strength of rainwater and the material of the umbrella, the rainwater that is blown inside the umbrella by the wind is also minimal. Rainwater, which has passed through a small hole from the outside of the umbrella to the inside, also flows down from the periphery of the umbrella along the inside of the umbrella due to surface tension and adhesive force. It doesn't drip towards the person wearing the umbrella.
Moreover, it can be said that the rainwater adhering to the small holes due to the strong wind is hardly scattered as the hole becomes smaller due to surface tension and adhesive force. Of course, no one assumes that the umbrella will be wet under the strong winds when it rains and that it will not get wet in the rain.

As the wind passes through many small holes, the degree to which the umbrella is blown by the wind decreases. Numerous holes on the umbrella surface reduce wind resistance. The normal fluid body is resisted by the turbulence that occurs behind the body, and many holes on the surface of the umbrella reduce the generation of turbulence, and the pressure of the wind that has passed through the hole is on the front side of the umbrella. It has the effect of supporting from the back against the resistance. When the wind passes, the wind pressure turns to the inside of the umbrella, the pressure difference between the outside and inside of the umbrella decreases, and the wind-induced tilt is reduced.

The reason why the fabric of the umbrella is transparent or translucent is that when the umbrella is tilted forward in a leaning position under strong wind, the front is easy to see through the umbrella and it is easy to proceed. Walking with a strong wind under an umbrella is a common sight, but the front is not visible, which is dangerous for traffic. In this case, if the umbrella is transparent or translucent, it is safe to see the front. In particular, many parents give their children transparent or translucent umbrellas because of traffic safety issues. When the umbrella is used on a windy day as in the present invention, a transparent or translucent umbrella is well suited to the purpose. Increased safety.
In addition, since a large number of holes are made in the umbrella, the weight is reduced and the weight is reduced, which makes it easier for women and children to handle and safer.

At present, so-called vinyl umbrellas are said to be up to 70% of the umbrellas shipped, and the demand is increasing. Because it is cheap, it is easily requested at convenience stores during sudden rain. From a parent's perspective, transparent umbrellas can be held safely by children in the wind and rain due to traffic safety benefits such as the surroundings being visible without being blocked by the umbrella. In that respect, the umbrella of the present invention is not expensive because it only has a hole in the conventional umbrella. Furthermore, by opening a large number of holes in the umbrella, the surrounding situation can be seen while holding the umbrella more transparent than the transparent umbrella before opening the hole with a synergistic effect, and the transparency from the inside to the outside is increased. The risk of being swung is reduced, and it contributes to improving traffic safety for children on the road where cars and bicycles come and go. The effect of increasing the safety of progress is remarkable.

It is a typical schematic diagram of the present invention. The black circles on the surface of the umbrella schematically represent a number of holes opened in the umbrella. In this figure, the size of the hole is drawn larger than the actual size, and almost the same size of the hole is evenly drilled on the umbrella surface, but the hole size may be different, or the umbrella surface It may be opened unevenly. The umbrella fabric material is transparent or translucent.

It is the schematic of invention of Claim 10. The holes are mainly drilled around the umbrella. In this figure, holes are not drawn in places other than the peripheral part, but of course, there may be holes opened in places other than the peripheral part.

(Umbrella fabric material)
The material of the umbrella fabric is, for example, cotton, hemp, silk, polyester polyurethane, polyester, polyamide, paper, nylon and other chemical fibers, polyvinyl chloride (PVC), polyolefin elastomer (POE), polyoxyethylene, amorphous polyolefin ( APO), ethylene vinyl acetate (EVA), polyethylene polypropylene, polyethylene terephthalate PLA resin (polylactic acid), polyhydroxyalkanoate (PHA), and fluorine-based materials such as polytetrafluoroethylene (PTFE). Examples include polyacrylic acid esters, vinyl polymers, polyfluoroethylene polymers, linen, and rayon. In particular, in the case of a material having strong water repellency, it can be said that rainwater is no longer transmitted through the inner surface of the umbrella when the hole diameter is smaller than 2 mm.

  Of course, a transparent or translucent material or a transparent or translucent material is constructed and used. Transparent or translucent fabrics include colored patterns and patterned ones. Here, the term “translucent” means a state where the other side of the cloth can be seen through to some extent when a cloth-like material is formed of a translucent material.

A water repellent such as Teflon (registered trademark) or silicon may be mixed, or a hydrophilic or water repellent coating may be used. Water repellent plastics or photocatalysts may also be used. All materials that can be transparent or translucent are suitable and are not limited to those listed here.

(Method for manufacturing umbrella fabric)
There are two main methods for manufacturing fabrics.
One is a method of punching a large number of small holes on the surface of a cloth such as a vinyl umbrella using a needle or drilling device such as a drill, a hole saw, a trimmer, and punching, a tool, and the like. In addition, there are a scratch method, a hot needle method, a laser method, and other methods. The size of the holes may be different. The umbrella fabric material is transparent or translucent.

The other is a method of weaving warp and weft yarns with occasional gaps without laying the transparent and translucent yarns without gaps in the case of woven fabrics. This is a method of providing a gap by adjusting the interval between the weaving yarns in the woven fabric. The yarn may have a water repellent coating or the like. Since the manufacturing method of the other part of the umbrella is the same as the conventional method, extra time is required.
The weight of the umbrella is reduced by the gap of the hole, which contributes to the weight reduction of the umbrella as a whole.
If the second method is adopted, the amount of fabric yarn used is reduced, leading to a reduction in raw material costs.

In the case where there is a hole in the peripheral part as in the case of claim 10, it is also possible to manufacture by combining two kinds of cloth having a hole in the peripheral part and cloth having no opening in the central part.
If the umbrella type is a deep dome with a narrow angle, if rainwater leaks inside the umbrella, it will be easier for the rainwater to flow around the umbrella fabric and escape the wind resistance. So good.

(Ingenuity to further reduce rainwater leakage inside the umbrella)
As described above, the smaller the hole diameter, the less rainwater leaks inside the umbrella. In addition, there are two ways to reduce rainwater leakage.
One is a method in which a large number of protrusions are provided on a sheet and one or more holes are formed there as shown in FIG. This is a technique for manufacturing an umbrella cloth having a large number of protrusions, making holes in the protrusions, and preventing rainwater from flowing into the holes.

Second, as shown in Fig. 6, the outer part of the hole protrudes like a bank that surrounds the hole, or a process that creates a burr-like bulge that is created when a hole is drilled from the inside to the outside. It is to be. After passing through the drill once, punching with a slightly larger diameter should be done. This is a technique that prevents rainwater from flowing into the hole by configuring the area around the exit of the hole opening outside the umbrella like a bank.
The rainwater leaks through the holes by the above two methods, so the rainwater leakage is further reduced.

The present invention mainly relates to an umbrella which is hard to be blown by the wind on rainy days and snowy days.

(Regarding Patent Documents 1 to 3)
In each of Patent Documents 1 to 3, an air hole mechanism is provided in the central part of the umbrella for escaping the wind blowing from the inside to the outside of the umbrella. It is effective against the wind that blows from the inside of the umbrella to the outside, and it can prevent the umbrella from turning over, but it is ineffective against the wind that blows to the outside of the umbrella, and the umbrella can be broken, It cannot be prevented from being swung around.
In addition, the structure is complicated and expensive, and the umbrella is difficult to repair.

(Regarding Patent Document 4)
Patent Document 4 is similar to the present invention in which a large number of holes are provided in an umbrella, but it is basically an invention related to a parasol, and is naturally a parasol, so it is opaque and a person holding the umbrella is around. A large number of small holes are provided in the umbrella so that can be seen. And it can be used as a rain umbrella by putting a tarpaulin cover on the umbrella.

However, umbrellas with a large number of small holes are waterproof if the size of the hole, the ratio of the total area of the holes to the entire umbrella, and the material, hydrophilicity, and water repellency of the umbrella fabric are appropriate, as in the present invention. It can be used as an umbrella that is not covered with the wind without covering the seat cover, and as in the case of Patent Document 4, it is troublesome to attach and remove it twice if it is used as an umbrella after covering the waterproof seat cover. It has been a hassle, and it must be said that it is completely impractical as an umbrella.

Moreover, although the hole diameter is illustrated in the specification of patent document 4, the porosity which a hole occupies for the whole umbrella is not specified. Therefore, it cannot always be said that there is an effect of ventilation.
Moreover, since it is a parasol, the porosity cannot be increased, and it must be limited to a small constant value or less.

(In the invention of Patent Document 4, the fabric is opaque and contrasted with the present invention)

<Description of related part of Patent Document 4>
"Claims"
[Claim 1] In an umbrella in which a main frame (3) is supported in an openable and closable manner on an umbrella shaft (1) and an umbrella cloth (4) is stretched on the main frame (3), the umbrella cloth (4) It is formed in a net shape having a through hole (7), and the reflectance of light on the front surface of the umbrella cloth (4) is increased, and the reflectance of light on the back surface of the umbrella cloth (4) is lowered. Umbrella.
"0001"
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to an umbrella for avoiding sunlight .
[0004] The present invention was developed in view of the above circumstances, and the object of the present invention is to be able to accurately see far away through the umbrella cloth while reliably blocking the sun . Moreover, it is to provide an umbrella having a cool breeze.
"0005"
[Means for Solving the Problems] In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that the main bone 3 is supported on the umbrella shaft 1 so as to be opened and closed, and the umbrella cloth 4 is stretched on the main bone 3. In this umbrella, the umbrella cloth 4 is formed in a net shape having a large number of through holes 7 to increase the light reflectance of the front surface of the umbrella cloth 4 and to reduce the light reflectance of the back surface of the umbrella cloth 4. It is.
"0007"
[ Effects of the Invention] Further, for example, direct sunlight is reliably reflected on the front surface side of the umbrella cloth 4 and hardly inserted into the back surface side of the umbrella cloth 4. [0008] According to the invention of claim 1, for example, Even if someone tries to see the inside of the umbrella from the outside through the through hole 7 of the umbrella cloth 4, the light reflectance on the surface side of the umbrella cloth 4 is high. Is suppressed.
"0009"
Umbrella in "Embodiments of the Invention" First, FIG. 1 is a so-called parasol used to block the day feed,
[0010] In the above configuration, the present invention forms the umbrella cloth 4 stretched around the main bone 3 into a net-like shape having a large number of through-holes 7, and increases the light reflectance of the surface of the umbrella cloth 4. [0011] Silver is vapor-deposited only on the surface side of the umbrella cloth 4 made of the above mesh fabric to increase the light reflectance on the surface side of the umbrella cloth 4, while the back surface side of the umbrella cloth 4 is the mesh fabric. By keeping this black, the reflectance of light on the back side of the umbrella cloth 4 is lowered.
[0013] In addition, strong sunlight is reliably reflected on the front surface side of the umbrella cloth 4 having a high light reflectivity, and is reliably shielded from light by the umbrella cloth 4 without being almost inserted into the back surface side of the umbrella cloth 4. It effectively fulfills its function as a parasol .
In the embodiment described above, "0015", by depositing silver on the surface side of the umbrella cloth 4 it has been higher light reflectance of the surface side of the umbrella cloth 4 is not limited thereto, for example, aluminum Even if the surface of the umbrella cloth 4 is colored with a color having a high light reflectance such as gold or white with a dye or the like, the light reflectance on the surface side of the umbrella cloth 4 can be increased. Good .
『0018』
[Effect of the invention] Moreover, since the sunlight is reliably reflected on the front surface side of the umbrella cloth 4 and hardly inserted into the back surface side of the umbrella cloth 4, it functions effectively as a parasol .
[0019] According to the invention described in claim 1, for example, even if another person tries to look inside the umbrella from the outside of the umbrella through the through hole 7 of the umbrella cloth 4, the light reflectance on the surface side of the umbrella cloth 4 is high. For this reason, it is difficult for others to see, for example, the face of the person holding the umbrella inside the umbrella, and the privacy of the person holding the umbrella can be protected.

From the above description, in the invention of Patent Document 4, the umbrella fabric material must be completely opaque or opaque. Therefore, in the invention of Patent Document 4, the umbrella fabric material cannot be configured to be transparent or translucent.
On the other hand, in the present invention, the umbrella fabric material is transparent or translucent, and the present invention and the invention of Patent Document 4 are contradictory and incompatible.

(Patent Document 4 is an invention about a parasol and contrasts with the present invention)

<Description of related part of Patent Document 4>
[Claim 2] The umbrella according to claim 1, wherein a waterproof sheet (8) covering the surface of the umbrella cloth (4) is detachable from the umbrella cloth (4).
"0001"
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to an umbrella for avoiding sunlight .
A waterproof sheet 8 covering the surface of the umbrella cloth 4 may be detachable from the umbrella cloth 4 of “0006” or more.
[0008] According to the invention described in claim 2, it is possible to use as a rain umbrella only by attaching the waterproof sheet 8 to the surface of the umbrella cloth 4 .
[0011] In the embodiment shown in the figure, a vinyl chloride waterproof sheet 8 having substantially the same shape as the umbrella cloth 4 is separately formed, and can be fitted to the outer periphery of the waterproof sheet 8 at the tip of the main bone 3. A plurality of caps 81 are provided, and the waterproof sheet 8 is detachably attached to the surface of the umbrella cloth 4 by fitting the cap 81 to the main bone 3, and the surface of the umbrella cloth 4 is covered with the waterproof sheet 8. I am doing so .
[0015] On the other hand, for example, when it rains, the waterproof sheet 8 is covered with the waterproof sheet 8 on the surface side of the umbrella cloth 4 and the cap 81 is fitted to the tip of the main bone 3 so that the waterproof sheet 8 is attached to the umbrella cloth. 4 is attached to the surface of 4 and rainwater can be reliably shielded by the waterproof sheet 8 and can be used immediately as a rain umbrella .
[0019] According to the invention described in claim 2 , the waterproof sheet 8 covering the surface of the umbrella cloth 4 can be attached to and detached from the umbrella cloth 4, so that the waterproof sheet 8 is simply attached to the surface of the umbrella cloth 4. It can also be used as a rain umbrella immediately , and the usability or the versatility of the umbrella increases accordingly.
FIG. 4 is a schematic perspective view of a waterproof sheet .

From the above description, the invention described in Patent Document 4 is an invention related to a parasol, and when used as a parasol, a waterproof sheet is further covered.
In the present invention, the multi-hole umbrella is used as a rain umbrella without using a waterproof sheet or the like, whereas the applicant of Patent Document 4 does not change the invention of Claim 1 of Patent Document 4 as it is. It expresses that it is not assumed that it will be used as an umbrella, and both inventions are also clearly different in the method of use.

That is, since the invention of Patent Document 4 is an invention related to a parasol, the invention of Patent Document 4 naturally has an opaque cloth material. If it is transparent or translucent, the basic utility as a parasol, that is, the effect of avoiding sunlight will be lost. Therefore, the invention of Patent Document 4 and the present invention clearly contradict each other.
In addition, the functions and effects of the multiple holes provided in the umbrella claimed in Patent Document 4 are only that the outside can be seen through from the inside of the umbrella and the effect of ventilation. There is no mention of any blocking effect.

JP 2011-143210 A JP 2006-102392 A JP 2004000431 A JP 10-215927 A

When it is raining, when trying to put an umbrella in the wind, it is swung around by the wind and the umbrella is broken by the wind, the umbrella is turned over by the wind, or the umbrella is no longer used Everyone will have experience. This is especially true if you have a baggage in your hand, a bicycle while you are holding an umbrella, or a child who is holding an umbrella.

The present invention has been made in view of the above. When an umbrella is used under strong winds, the amount of rainwater leaking inside the umbrella is minimized, the degree of wind is reduced as much as possible, and the umbrella is not used. It is to try to squeeze.

In order to achieve the above object, the present invention has a large number of small holes on the surface of an umbrella.
Since wind passes inside and outside the umbrella, the wind pressure applied to the umbrella is reduced. Moreover, rainwater and snow are blocked according to the hole diameter and the number of holes.

(Claims 1 to 4)
In the first to fourth aspects, at least a diameter of 15 mm or less or an area of 177 square millimeters, or a diameter of 10 mm or less or an area of 79 square millimeters, or a diameter of 7 mm or less or an area of 39 square millimeters or less, or a diameter of 5 mm Or less than 20 square millimeters, or 3 mm or less in diameter or 7 square millimeters in area, or 2 mm or less in diameter or 3.1 square millimeters in area, or 1 mm or less in diameter or 0.8 square millimeters in area, or 0.5 mm in diameter or 0.2 square in area Millimeter or less, or diameter 0.2 mm or less or area 0.03 square millimeter or less,
A large number of through-holes with a diameter of less than or less than the hole area are open, and the ratio of the total area of the holes to the total surface area of the umbrella is 10% to 70%, or 20% to 60%, or The variation is in the range of 30% to 60%, or 5% to 40%.
A case where the hole diameter or the hole area has a diameter of 30 mm or less or an area of 707 square millimeters or less, or a diameter of 20 mm or less or an area of 314 square millimeters or less may be added.

The reason why the hole diameter and the hole area are represented in two types is that the hole is not necessarily circular, and the area of the circle having the left diameter is written on the right side and paired.
The ratio of the total area of the hole to the total surface area of the umbrella is 10% to 70%, 20% to 60%, 30% to 60%, 40% to 60%, 50% to 60%, 10% 40% or less, 5% or more and 40% or less, 5% or more and 30% or less, 5% or more and 20% or less.
The rain and snow umbrella of the present invention can take any porosity range or porosity in the porosity range described in the claims.
Of course, the larger the porosity, the better the ventilation but the less rainproof effect. Conversely, the smaller the porosity, the worse the ventilation, but the greater the rainproof effect. It should be selected according to usage and preference.

The larger the hole, the better the ventilation and the less wind resistance, but the more likely it is to leak inside the umbrella. Smaller hole diameter or hole area reduces the possibility of rain leaking inside the umbrella, but increases wind resistance. Balance is necessary. Since the size of the raindrop is approximately 0.2 mm to 6 mm in diameter, when the hole diameter is around 3 mm, the leakage of rain inside the umbrella decreases rapidly. The holes may all be the same size, but need not be.

For an umbrella with a hole having a large hole diameter and hole area, it is easier for the wind to circulate and the resistance of the wind can be greatly reduced. It is a multi-hole umbrella used in strong winds such as during typhoons or in the case of snow.
If it is raining under strong winds such as during a typhoon, not everyone can prepare rain wings. Many people have to go out with an umbrella. In that case, you should avoid the direct hit of rain stronger than some wetness. If it is a main stage umbrella, since the hole diameter is large, clothes etc. will get wet somewhat due to the rain that entered the inside of the umbrella, but since the hole diameter is large, the circulation of the wind is good, so it will be swung by the wind There is no direct hit of heavy rain.
In the case of snow, there is no snow entering the inside of the umbrella without reducing the hole diameter so much. As the hole diameter is larger, the wind flow is better, so snow can be avoided without being swung by the wind.

Furthermore, the ratio of the total area of the holes to the surface area of the umbrella may be too much or too little. Increasing the total area of the holes improves ventilation and reduces wind resistance. However, depending on the hole diameter, there is a possibility of leakage, and the possibility that rainwater that has entered the hole will be blown by the wind toward the face of the person.
On the other hand, if the amount is too small, the possibility of rain leakage and the possibility of rainwater that has entered the hole being blown toward the face of the person by the wind decreases, but the resistance of the wind to the umbrella increases.
The ratio of the hole diameter, the hole area, and the total area of the hole to the total surface area of the umbrella is varied depending on the weather conditions, the use, the difference of men, women, children, the elderly, etc.

Here, “at least” in the claims excludes the presence of holes having a hole diameter or hole area larger than any one of the hole diameters or hole areas listed in the claims. Means no.
In other words, the ratio of the total area of non-standard holes to the total surface area of the umbrella is between 10 minus 7%, 1%, 3%, 5%, etc. Any value or a value greater than 10%.
The reason why the material of the umbrella fabric is transparent or semi-transparent is that when the umbrella is tilted forward in a leaning position under the strong wind, it is easy to see through the umbrella and easily proceed safely.

(About claims 5 to 8)
In claims 5 to 8, the predicate “at least” in claims 1 to 4 is omitted, and “only” is added.
This means that the presence of a hole having a hole diameter or hole area larger than any one of the hole diameters or hole areas recited in the claims is excluded.

(About claim 9)
A lower limit for small holes is provided.

(About claim 10)
In this claim, the hole is provided in the peripheral portion of the umbrella.
Due to the principle of leverage, the wind pressure on the periphery of the umbrella is the main cause of the beating of the umbrella due to the strong wind rather than the wind pressure on the center of the umbrella. Therefore, the umbrella is raised mainly by the resistance of wind applied to the peripheral part of the umbrella, and thus the resistance of the wind applied to the peripheral part of the umbrella is reduced. Pulling it can reduce the wind resistance across the umbrella.
The other is to reduce the possibility and impact of rain leaks. This is because even if rainwater that has entered the hole is blown in the direction of the human face by the wind, it is not so much from the periphery.

(About claim 11)
This claim is for excluding handmade products, handicrafts, crafts, works of art, damaged items, etc. from the invention of this claim. For the purpose of decoration, holes that are opened for the purpose of irrelevant to the object of the present invention are excluded.
It is clarified that the invention of this claim is an industrial product. Unlike industrial products, industrial products can be produced in large quantities in a short time.

When it rains, the wind is often strong. The multi-hole umbrella of the present invention is an umbrella that is rarely drowned in wind and rain.
The multi-hole umbrella of the present invention is an umbrella that filters rainwater and snow under wind and snow and allows only wind to pass through.
The multi-hole umbrella of the present invention hardly leaks rain, is not covered with wind, is transparent and translucent, and can safely confirm the surrounding traffic conditions. It is very effective even in snowy weather.
The present invention allows the umbrella to have a wind path, with minimal rain leakage, rain splash, or no rain leak, no rain splash, wind under strong wind, umbrella reversal, umbrella fracture Is to reduce.

The multi-hole umbrella of the present invention is free from rain leakage and rain splashes in rainy weather and in a windless state. On the other hand, in rainy weather, nobody thinks that they will get wet in the rain with umbrellas under strong winds. Even if there is some rain and rain splashes, avoiding the direct hit of wind mixed with rain is an effect required of an umbrella in such a weather.
Also, the umbrella of the present invention can be used properly depending on the situation and a normal umbrella having no holes. When there is wind even in rainy weather, it is possible to use different types of umbrellas than when there is no wind.
Rainy days, windless days, windy days. Windy day, weak day. Snowy days, windless days, windy days. Windy day, weak day. Rain, snowy day, weak day, perforated umbrella of the present invention, normal non-perforated umbrella, large perforated umbrella, small perforated umbrella, large porosity umbrella, small Use an umbrella and an umbrella with holes in the periphery.

By using rain umbrellas separately on windy days and those with no wind, for example, it is not possible to get wet with rain at all as well as under strong wind typhoons, so use umbrellas with a large hole diameter and umbrellas with a high porosity. It is possible to use it even if it gets wet to some extent, such as preventing the umbrella from being damaged by strong winds and avoiding the soaking of the present day due to rain.
Similarly, on snowy days under strong winds, it does not bother you to get wet with the snow somewhat, so if you use an umbrella with a large hole diameter or an umbrella with a large porosity, It can also be used to prevent damage to the umbrella caused by snow while avoiding direct hits by snow.

In the present invention, by providing a large number of holes in the umbrella fabric, it is not swayed by the wind in an attempt to repel all of the wind pressure as in the case of a conventional umbrella. It is intended to reduce the degree of being swung by the wind.
Of course, in this case, it is even better if there is little or no rainwater that leaks through the umbrella and is blown inside the umbrella by the wind.

If the hole diameter is 6 mm to 0.2 mm or less of the size of raindrops, or the hole area is 28 square millimeters to 0.03 square millimeters or less, rain leakage to the inside of the umbrella, rainwater dripping, rainwater from the wind while maintaining the wind circulation The effect of no splash and no effect becomes remarkable.
Furthermore, the rainwater passing through the hole from a hole diameter of 3 mm or less or a hole area of 7 square millimeters or less drastically decreases, and almost disappears from a hole diameter of 1 mm or less or a hole area of 0.8 square millimeter or less. However, since there is a porosity, the flow of wind is maintained.

The mechanism for preventing rain leakage, dripping, and rain splashing inside the umbrella is as follows.
The present invention has been made based on the knowledge that if the hole is a small hole, dripping from the outside of the umbrella to the inside due to the surface tension and adhesive force of rainwater, and the inside blowing by the wind is minimal, the material of the fabric is In the case of water repellency and hydrophobicity, the smaller the hole is, the more rainwater can enter the inside of the umbrella before it enters the hole due to surface tension. There is little or no rainwater splashing inside the umbrella by rainwater and wind leaking from the umbrella.

Let the hole diameter be 1mm. When there is no wind in the rain, it can be said that there are almost no water droplets of 1mm or less on the outer surface of the umbrella. If it is, it is too light, and it does not move around by itself even if it is attached to the surface of the umbrella and is stationary. Eventually it will only be absorbed by larger drops of water. Since water droplets of 1mm or more cannot pass through the hole, water droplets that pass through the hole with water droplets of 1mm or less are only raindrops that hit the center of the 1mm hole and are rare. When there is wind in rainy weather, it is a wind mixed with raindrops, so water droplets of 1 mm or more are filtered by holes, and eventually it is like a drizzle of about 0.5 mm that permeates through the holes. It will not be a pain.

If the material of the fabric is hydrophilic, rainwater that has entered the inside through the hole will only drop on the ground from the outer periphery of the umbrella through the inner surface of the umbrella, and people will get wet with rainwater. There is no.
Due to the adhesive strength of rainwater and the material of the umbrella, the rainwater that is blown inside the umbrella by the wind is also minimal. Rainwater, which has passed through a small hole from the outside of the umbrella to the inside, also flows down from the periphery of the umbrella along the inside of the umbrella due to surface tension and adhesive force. It doesn't drip towards the person wearing the umbrella.
Moreover, it can be said that the rainwater adhering to the small holes due to the strong wind is hardly scattered as the hole becomes smaller due to surface tension and adhesive force. Of course, no one assumes that the umbrella will be wet under the strong winds when it rains and that it will not get wet in the rain.

As the wind passes through many small holes, the degree to which the umbrella is blown by the wind decreases. Numerous holes on the umbrella surface reduce wind resistance. The normal fluid body is resisted by the turbulence that occurs behind the body, and many holes on the surface of the umbrella reduce the generation of turbulence, and the pressure of the wind that has passed through the hole is on the front side of the umbrella. It has the effect of supporting from the back against the resistance. When the wind passes, the wind pressure turns to the inside of the umbrella, the pressure difference between the outside and inside of the umbrella decreases, and the wind-induced tilt is reduced.

The reason why the fabric of the umbrella is transparent or translucent is that when the umbrella is tilted forward in a leaning position under strong wind, the front is easy to see through the umbrella and it is easy to proceed. Walking with a strong wind under an umbrella is a common sight, but the front is not visible, which is dangerous for traffic. In this case, if the umbrella is transparent or translucent, it is safe to see the front. In particular, many parents give their children transparent or translucent umbrellas because of traffic safety issues. When the umbrella is used on a windy day as in the present invention, a transparent or translucent umbrella is well suited to the purpose. Increased safety.
In addition, since a large number of holes are made in the umbrella, the weight is reduced and the weight is reduced, which makes it easier for women and children to handle and safer.

At present, so-called vinyl umbrellas are said to be up to 70% of the umbrellas shipped, and the demand is increasing. Because it is cheap, it is easily requested at convenience stores during sudden rain. From a parent's perspective, transparent umbrellas can be held safely by children in the wind and rain due to traffic safety benefits such as the surroundings being visible without being blocked by the umbrella. In that respect, the umbrella of the present invention is not expensive because it only has a hole in the conventional umbrella. Furthermore, by opening a large number of holes in the umbrella, the surrounding situation can be seen while holding the umbrella more transparent than the transparent umbrella before opening the hole with a synergistic effect, and the transparency from the inside to the outside is increased. The risk of being swung is reduced, and it contributes to improving traffic safety for children on the road where cars and bicycles come and go. The effect of increasing the safety of progress is remarkable.

It is a typical schematic diagram of the present invention. The black circles on the surface of the umbrella schematically represent a number of holes opened in the umbrella. In this figure, the size of the hole is drawn larger than the actual size, and almost the same size of the hole is evenly drilled on the umbrella surface, but the hole size may be different, or the umbrella surface It may be opened unevenly. The umbrella fabric material is transparent or translucent.

It is the schematic of invention of Claim 10. The holes are mainly drilled around the umbrella. In this figure, holes are not drawn in places other than the peripheral part, but of course, there may be holes opened in places other than the peripheral part.

(Umbrella fabric material)
The material of the umbrella fabric is, for example, cotton, hemp, silk, polyester polyurethane, polyester, polyamide, paper, nylon and other chemical fibers, polyvinyl chloride (PVC), polyolefin elastomer (POE), polyoxyethylene, amorphous polyolefin ( APO), ethylene vinyl acetate (EVA), polyethylene polypropylene, polyethylene terephthalate PLA resin (polylactic acid), polyhydroxyalkanoate (PHA), and fluorine-based materials such as polytetrafluoroethylene (PTFE). Examples include polyacrylic acid esters, vinyl polymers, polyfluoroethylene polymers, linen, and rayon. In particular, in the case of a material having strong water repellency, it can be said that rainwater is no longer transmitted through the inner surface of the umbrella when the hole diameter is smaller than 2 mm.

  Of course, a transparent or translucent material or a transparent or translucent material is constructed and used. Transparent or translucent fabrics include colored patterns and patterned ones. Here, the term “translucent” means a state where the other side of the cloth can be seen through to some extent when a cloth-like material is formed of a translucent material.

A water repellent such as Teflon (registered trademark) or silicon may be mixed, or a hydrophilic or water repellent coating may be used. Water repellent plastics or photocatalysts may also be used. All materials that can be transparent or translucent are suitable and are not limited to those listed here.

(Method for manufacturing umbrella fabric)
There are two main methods for manufacturing fabrics.
One is a method of punching a large number of small holes on the surface of a cloth such as a vinyl umbrella using a needle or drilling device such as a drill, a hole saw, a trimmer, and punching, a tool, and the like. In addition, there are a scratch method, a hot needle method, a laser method, and other methods. The size of the holes may be different. The umbrella fabric material is transparent or translucent.

The other is a method of weaving warp and weft yarns with occasional gaps without laying the transparent and translucent yarns without gaps in the case of woven fabrics. This is a method of providing a gap by adjusting the interval between the weaving yarns in the woven fabric. The yarn may have a water repellent coating or the like. Since the manufacturing method of the other part of the umbrella is the same as the conventional method, extra time is required.
The weight of the umbrella is reduced by the gap of the hole, which contributes to the weight reduction of the umbrella as a whole.
If the second method is adopted, the amount of fabric yarn used is reduced, leading to a reduction in raw material costs.

In the case where there is a hole in the peripheral part as in the case of claim 10, it is also possible to manufacture by combining two kinds of cloth having a hole in the peripheral part and cloth having no opening in the central part.
If the umbrella type is a deep dome with a narrow angle, if rainwater leaks inside the umbrella, it will be easier for the rainwater to flow around the umbrella fabric and escape the wind resistance. So good.

Claims (11)

At least the diameter of the umbrella fabric is 15 mm or less or an area of 177 square millimeters or less, or the diameter is 10 mm or less or the area is 79 square millimeters or less, or the diameter is 7 mm or less or the area is 39 square millimeters or less, or the diameter is 5 mm or less or the area is 20 square millimeters or less. Or diameter 3 mm or less or area 7 square millimeters or less, or diameter 2 mm or less or area 3.1 square millimeters or less, or diameter 1 mm or less or area 0.8 square millimeters or less, or diameter 0.5 mm or less, area 0.2 square millimeters or less, or diameter 0.2 mm or less Or area 0.03 square millimeter or less,
A large number of through-holes having a diameter smaller than or equal to the hole area or less than the hole area, and the total area of the entire through-hole is 10% or more and 70% or less of the entire surface area of the umbrella. Or a multi-hole rain and snow umbrella made of translucent umbrella fabric At least the diameter of the umbrella fabric is 15 mm or less or an area of 177 square millimeters or less, or the diameter is 10 mm or less or the area is 79 square millimeters or less, or the diameter is 7 mm or less or the area is 39 square millimeters or less, or the diameter is 5 mm or less or the area is 20 square millimeters or less. Or diameter 3 mm or less or area 7 square millimeters or less, or diameter 2 mm or less or area 3.1 square millimeters or less, or diameter 1 mm or less or area 0.8 square millimeters or less, or diameter 0.5 mm or less, area 0.2 square millimeters or less, or diameter 0.2 mm or less Or area 0.03 square millimeter or less,
A large number of through holes having a diameter smaller than or equal to the hole area or less than the hole area, and the total area of the entire through hole is 20% or more and 60% or less of the entire surface area of the umbrella. Or a multi-hole rain and snow umbrella made of translucent umbrella fabric At least the diameter of the umbrella fabric is 15 mm or less or an area of 177 square millimeters or less, or the diameter is 10 mm or less or the area is 79 square millimeters or less, or the diameter is 7 mm or less or the area is 39 square millimeters or less, or the diameter is 5 mm or less or the area is 20 square millimeters or less. Or diameter 3 mm or less or area 7 square millimeters or less, or diameter 2 mm or less or area 3.1 square millimeters or less, or diameter 1 mm or less or area 0.8 square millimeters or less, or diameter 0.5 mm or less, area 0.2 square millimeters or less, or diameter 0.2 mm or less Or area 0.03 square millimeter or less,
A large number of through-holes having a diameter smaller than or equal to the hole area or less than the hole area, and the total area of the entire through-hole is 30% or more and 60% or less of the entire umbrella surface area. Or a multi-hole rain and snow umbrella made of translucent umbrella fabric At least the diameter of the umbrella fabric is 15 mm or less or an area of 177 square millimeters or less, or the diameter is 10 mm or less or the area is 79 square millimeters or less, or the diameter is 7 mm or less or the area is 39 square millimeters or less, or the diameter is 5 mm or less or the area is 20 square millimeters or less. Or diameter 3 mm or less or area 7 square millimeters or less, or diameter 2 mm or less or area 3.1 square millimeters or less, or diameter 1 mm or less or area 0.8 square millimeters or less, or diameter 0.5 mm or less, area 0.2 square millimeters or less, or diameter 0.2 mm or less Or area 0.03 square millimeter or less,
A large number of through-holes having a diameter smaller than or equal to the hole area of any one of these holes are opened, and the total area of the entire through-hole is not less than 5% and not more than 40% of the entire umbrella surface area. Or a multi-hole rain and snow umbrella made of translucent umbrella fabric The diameter of the umbrella fabric is 15 mm or less or an area of 177 square millimeters or less, or a diameter of 10 mm or less or an area of 79 square millimeters or less, or a diameter of 7 mm or less or an area of 39 square millimeters or less, or a diameter of 5 mm or less or an area of 20 square millimeters or less, or a diameter. 3 mm or less or area 7 square millimeters or less, or diameter 2 mm or less or area 3.1 square millimeters or less, or diameter 1 mm or less or area 0.8 square millimeters or less, or diameter 0.5 mm or less or area 0.2 square millimeters or less, or diameter 0.2 mm or less or area 0.03 square millimeter or less,
Only a large number of through-holes having a diameter smaller than or equal to the hole diameter of any one of these holes are opened, and the total area of the entire through-hole is not less than 10% and not more than 70% of the entire umbrella surface area. Multi-hole rain and snow umbrella using transparent or translucent umbrella fabric material The diameter of the umbrella fabric is 15 mm or less or an area of 177 square millimeters or less, or a diameter of 10 mm or less or an area of 79 square millimeters or less, or a diameter of 7 mm or less or an area of 39 square millimeters or less, or a diameter of 5 mm or less or an area of 20 square millimeters or less, or a diameter. 3 mm or less or area 7 square millimeters or less, or diameter 2 mm or less or area 3.1 square millimeters or less, or diameter 1 mm or less or area 0.8 square millimeters or less, or diameter 0.5 mm or less or area 0.2 square millimeters or less, or diameter 0.2 mm or less or area 0.03 square millimeter or less,
Only a large number of through-holes having a diameter smaller than or equal to the hole area of any one of these holes are opened, and the total area of the entire through-hole is 20% or more and 60% or less of the entire umbrella surface area. Multi-hole rain and snow umbrella using transparent or translucent umbrella fabric material The diameter of the umbrella fabric is 15 mm or less or an area of 177 square millimeters or less, or a diameter of 10 mm or less or an area of 79 square millimeters or less, or a diameter of 7 mm or less or an area of 39 square millimeters or less, or a diameter of 5 mm or less or an area of 20 square millimeters or less, or a diameter. 3 mm or less or area 7 square millimeters or less, or diameter 2 mm or less or area 3.1 square millimeters or less, or diameter 1 mm or less or area 0.8 square millimeters or less, or diameter 0.5 mm or less or area 0.2 square millimeters or less, or diameter 0.2 mm or less or area 0.03 square millimeter or less,
Only a large number of through-holes having a diameter smaller than or equal to the hole diameter of any one of these holes are opened, and the total area of the entire through-hole is not less than 30% and not more than 60% of the entire umbrella surface area. Multi-hole rain and snow umbrella using transparent or translucent umbrella fabric material The diameter of the umbrella fabric is 15 mm or less or an area of 177 square millimeters or less, or a diameter of 10 mm or less or an area of 79 square millimeters or less, or a diameter of 7 mm or less or an area of 39 square millimeters or less, or a diameter of 5 mm or less or an area of 20 square millimeters or less, or a diameter. 3 mm or less or area 7 square millimeters or less, or diameter 2 mm or less or area 3.1 square millimeters or less, or diameter 1 mm or less or area 0.8 square millimeters or less, or diameter 0.5 mm or less or area 0.2 square millimeters or less, or diameter 0.2 mm or less or area 0.03 square millimeter or less,
Only a large number of through-holes having a diameter smaller than or equal to the hole area or smaller than the hole area are open, and the total area of the entire through-hole is 5% or more and 40% or less of the entire umbrella surface area. Multi-hole rain and snow umbrella using transparent or translucent umbrella fabric material The multi-hole rain and snow umbrella not covered with the wind according to any one of claims 1 to 8, wherein the size of the through hole is 0.1 mm or more in diameter or 0.008 square millimeters or more in area. Multi-hole rain and snow umbrella using transparent or translucent umbrella fabric material A multi-hole rain and snow umbrella not covered with the wind according to any one of claims 4 and 8,
The through holes are unevenly distributed in the radial direction of the umbrella,
Multi-hole rain and snow using transparent or translucent umbrella fabric material that is not covered by the wind, and has a through-hole of 70% or more of the total area of the through-hole in the peripheral part having a radius of 1/2 or more from the center of the umbrella umbrella The multi-hole rain and snow umbrella according to any one of claims 1 to 10,
The manufacturing method is such that the umbrella fabric is a woven fabric, and adjusts or increases or decreases the thickness of the yarn and the gap width between the threads, thereby adjusting or increasing or decreasing the ratio of the voids due to the through holes in the umbrella fabric. The industrial fabric manufacturing method or the umbrella fabric is an integrally molded sheet, and the through-hole is drilled in the integrally molded sheet with a drill, a hole saw, a trimmer, a punching or other drilling tool or machine. A multi-hole rain and snow umbrella using a transparent or translucent umbrella fabric material that is not covered by the wind, which is an industrial manufacturing method that adjusts and increases or decreases the proportion of voids due to the through-holes in the entire umbrella fabric