JPH0325587Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial Application Field" This invention relates to a bird damage prevention device that scares away birds by visual stimulation.

"Conventional technology and its issues" In the past, bird damage was mainly caused by direct damage to agricultural crops due to the feeding habits of birds, but it has also been caused by the destruction of the natural environment due to large-scale development during the so-called high economic growth period from the 1950s onwards. A noticeable change in the damage has started to be seen. In other words, the damage is diversifying, including damage caused by habitat loss, damage caused by an increase in the population of urbanized birds, induced damage caused by changes in agricultural and other forms of production, and damage caused by collisions with aircraft and damage related to transportation and communications. .

Birds that are said to be harmful are also beneficial birds that eat pests during the breeding season, and are important members of the ecosystem, so it is illegal to capture or kill them just because they cause damage. is regulated.

Scarecrows, eyeball balloons, and bird tape are used as methods to prevent damage caused by birds by driving them away without capturing or killing them. However, when the same stimulation is repeated over a long period of time, and cannot produce the effect of driving away.

Models of birds of prey and other birds, such as balloons, used as tools to prevent bird damage.
-33266, U.S. Pat.
Unexamined patent application 1986-65142, 1987-183877, 183877
Many proposals have been made, such as -38286, 1986-59471, 60-79973, etc., but the cost is too high to create one so precise that it can be mistaken for an actual bird of prey, so it can be easily created by omitting it. In this case, it would not be effective in scaring away the birds. On the other hand, a scarecrow with a picture of a bird of the Accipitrid family, that is, a bird of prey, on both sides of a flat plate was proposed in 1987-10472, but birds who saw such a picture of a bird of prey, that is, their natural enemy, were temporarily surprised by its appearance. They will run away in fear, but if they experience this a few times, they will become accustomed to it and will no longer run away, making it impossible to demonstrate the effect of preventing bird damage over a long period of time.

There was also the problem that it was difficult to dynamically express the state of flight, resulting in a lack of repelling effect.

"Means for Solving the Problem" The above drawback is due to the lack of research on what kind of appearance of birds of prey, which is their natural enemy, gives fear to birds. As a result of research and experiments on the pictures of birds of prey that can be attached, it was found that what other animals see to identify them as birds of prey is the appearance of them in flight, and the picture that gives them the most fear is the black color of a bird of prey in flight. He discovered that it was a silhouette picture and came up with this idea. That is, the purpose of this proposal is to dynamically express the flight state of a bird of prey suspended in the air, thereby improving the effect of driving away natural enemies.

In order to achieve the above purpose, this project involves displaying a picture of a bird of prey in flight on the front side of a piece of transparent plastic, a black silhouette picture that corresponds to the picture on the back side, and outside the outline of these pictures. The device is constituted by a bird damage prevention device having a transparent portion, and a through hole for rotatably supporting the plastic piece at the edge of the transparent portion.

``Function'' Therefore, if the string 4 is inserted through the hole 3 and suspended, or the support shaft 9 is inserted through the hole 3 to rotatably support the transparent plastic piece 1, the plastic piece 1 will be moved by the wind. The picture 2 and the silhouette picture 6 of the flying bird of prey dynamically appear floating in the air through the transparent part 5, and the black silhouette picture 6 flickers and appears, causing the natural enemy bird to become frightened and run away.

``Example 1'' As shown in FIG. 1, a flying sparrowhawk is drawn on the surface of a circular transparent plastic piece 1 using a black line drawing 2 in almost the actual size, and a string is perforated near the periphery of the plastic piece 1. A hanging string 4 is inserted into a through hole 3. On the back side, a silhouette drawing 6 is painted in black within the outline that corresponds to the black line drawing 2 above.
The outside of the outlines of these pictures 2 and 6 is defined as a transparent part 5, the hole 3 is bored in the edge of the transparent part 5, the string 4 is passed through the hole 3, and the plastic piece 1 is inserted. is rotatably supported by wind power.

``Example 2'' As shown in FIG. 2, a piece of thin paper or film with a black line drawing 2 of a flying sparrowhawk drawn almost in real size is pasted on the surface of a circular transparent plastic piece 1.
This is a bird damage prevention device in which tension strings 4a, 4a are inserted into string passing holes 2, 3 drilled near the periphery of the plastic piece 1. On the back side of the above plastic piece 1 is a black silhouette drawing 6 which corresponds to the black line drawing 2.
, leave a transparent part 5 outside the outlines of these pictures 2 and 6, and make the holes 3 and 3 at the edges of the transparent part 5.
It is made by drilling.

``Example 3'' As shown in FIG. 3, on one side of a circular transparent plastic plate 1, a piece of thin paper or film with a nearly life-sized black line drawing 2 of a flying sparrowhawk drawn on it was pasted,
As shown in FIG. 4, a thin paper or film 7 on which a silhouette picture 6 in which the outline of the black line drawing 2 is turned over and painted black is placed on a transparent plate 1, aligning the outline with the picture 2 on the front side.
This is a bird damage prevention device which is attached to the back side of a transparent plate 1 and has a hanging string 4 inserted into a string passing hole 3 drilled near the periphery of a transparent plate 1.

``Example 4'' As shown in FIG. 5, a black line drawing 2 of a sparrowhawk flying in flight on one side of the paper or film 5a is made almost to the actual size.
A silhouette painting drawn in black and showing the outline of a sparrowhawk in flight on the back side (not shown)
Draw two circular transparent plastic plates 1a,
The paper or film 5a is sandwiched between the two transparent plates 1a and 1b, and the peripheral edges of the two transparent plates 1a and 1b are sealed 8.
This is a bird damage prevention device in which a tensioning string 4a is inserted through a string passing hole 3 formed in the bird damage prevention device.

``Example 5'' As shown in FIGS. 6 to 8, a black line drawing 2 of a flying sparrowhawk is drawn on one side of a paper or film 5 to approximately the actual size, and the paper or film 5 is pasted on the back side of a transparent plastic board 1a. On one side of the film 7, a silhouette picture 6 of a flying sparrowhawk painted in black is drawn to approximately the actual size and pasted on the back side of the transparent plastic plate 1b, with both transparent plates 1a and 1b placed back to back with the support shaft 9 in between. This is a bird damage prevention device that is installed and fixed.

The hanging type bird damage preventers of Examples 1 to 4 are preferably provided with a large number of string passage holes 3 as shown in FIGS. Select the posture of the similar picture, figure 1, figure 3
It can be hung by a hanging string 4 as shown in FIGS.
Supported by a, agriculture-related fields include farmland, feed yards, livestock sheds, etc.; fisheries-related fields include fish farms, hatcheries, fish processing plants, etc.; forestry-related fields, such as seed and young seedling nurseries, and other buildings and condominiums. Place them appropriately at areas where bird damage occurs, such as balconies and windows, product storage areas in factories and warehouses, and around airports.

In the bird damage prevention device of Example 5, a support shaft 9 is rotatably attached to a power transmission tower, the tip of a telephone pole, above a construction site, above a block wall, fence, iron fence, etc., and a transparent plate, that is, a bird of prey, is attached by the force of the wind. Make the pictures of the same type rotate. In addition to the case where a picture appears on both sides as described in Example 5, it is of course possible to implement a case where a picture appears on both sides according to Examples 1 to 4. Furthermore, in the fifth embodiment, as shown in FIGS. 6 to 8, if the transparent plates are made into a slightly asymmetrical shape, and the transparent plates 1a and 1b are made into a slightly open shape, they can be easily rotated by the wind, which increases the effect. .

The birds to be used in the picture can be selected from any suitable raptor, such as the Japanese hawk, black-spotted hawk, sparrowhawk, peregrine falcon, or hawk, but the sparrowhawk mentioned in the above example is a small hawk in the Accipitridae family. It can be used as a model for paintings by drawing it at the closest size to the real thing, and it is a rare species of raptor that primarily feeds on other birds, so it is difficult for other birds to just look at its appearance. It is most effective because it is fearful. When drawing, it is more effective to slightly exaggerate the characteristics of birds of prey, such as the line of sight, wing feathers, and beak.

``Effect of the invention'' Since the present invention is constructed as described above, the transparent plastic piece 1 can be rotatably supported in the air, and the bird of prey drawn on the piece 1 can move to express the flying state. Since the black silhouette 6 of the bird of prey can be seen by rotating the piece 1, natural enemies can be surprised and chased away.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, FIG. 2 is a perspective view showing another embodiment of the present invention, FIG. 3 is a perspective view showing still another embodiment of the present invention, and FIG. 4 is a perspective view showing another embodiment of the present invention. 3 is a perspective view showing the back side of FIG. 3, FIG. 5 is a perspective view showing another embodiment of the present invention, FIGS. 6 to 8 show still other embodiments of the present invention, and FIG. 6 is a front view. FIG. 7 is a back view, and FIG. 8 is a perspective explanatory view showing the structure. 1...Transparent plastic piece, 2...Picture of a bird of prey in flight, 3...Through hole, 5...Transparent part, 6
...A black silhouette picture.

Claims (1)

[Scope of utility model registration request] A transparent plastic piece has a picture of a bird of prey in flight on its surface, a black silhouette picture that matches the picture on the back side, a transparent part outside the outline of these pictures, and the transparent part A bird damage prevention device comprising a through hole for rotatably supporting the plastic piece at the edge thereof.