JPH0246309Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a device for preventing birds such as pigeons from building nests.

(Prior technology) Birds such as pigeons like to build their nests on the flat surfaces of H-steel materials on the outside walls of elevated roads and guard side walls, and on the eaves of structures such as buildings. and contamination, which seriously impairs environmental hygiene.

One way to prevent birds from building nests is to make sharp, chevron-shaped cuts of approximately 5 mm at equal intervals in a steel plate, and then to raise the cuts and place them at predetermined locations. This steel plate has sharp protrusions arranged to make it difficult for birds to get a foothold, thereby preventing birds from settling there. Birds deal with this by laying straw or leaves between the protrusions to make them flat, so steel plates like this, which make it difficult for birds to get a foothold, are not effective as a means to prevent nest building. I can't perform. In addition, it is easy to damage the builder during construction.

Therefore, recently, bird repellents (for example, for soil pigeons, Aranik (trade name, manufactured by Tanabe Seiyaku Co., Ltd.)) are increasingly being used instead. Although such drugs are applied to predetermined areas using a spray gun, they have the fatal drawback of losing their efficacy within a short period of time due to rain or sunlight. It also scatters into the air during application and contaminates the air.
It is eagerly awaited for the emergence of a device that is harmless to the human body, easy, inexpensive, and semi-permanent in preventing birds from building nests.

In view of these circumstances, the inventor of the present application has developed a bird nest-building prevention device (Utility Application No. 59-1983), which has a plurality of thin strips erected at regular intervals on a substantially planar base material.
115652). However, with such a nest-building prevention device, since pigeons can stop on the base material between the outer strips, there is a risk that they will enter the gap between the inner strips and build a nest. There is.

(Problems to be solved by the invention) The present invention solves the above-mentioned problems of the prior art, and its purpose is to reliably and completely prevent birds from landing and to be harmless to the human body. To provide a device that can semi-permanently prevent birds from building nests. Another object of the present invention is to provide a device for preventing birds from building nests, which has a simple structure, is lightweight, and is highly economical.

(Means for Solving the Problems) The device of the present invention consists of a plurality of rows of striped protrusions erected at predetermined intervals on a flat base material, each of which has a plate shape on the outside. A space opened outward is formed between the lower end portions of the strip protrusions, thereby achieving the above object.

(Example) The present invention will be described below with reference to embodiments.

As shown in the figure, the device of the present invention has a substantially planar, lattice-like base material 1 on which a plurality of thin strip protrusions 2 are erected substantially perpendicularly. The strip protrusions 2 are arranged in a plurality of rows in one direction. There is no base material 1 between the lower ends of adjacent striped protrusions 2, 2, .

Each strip protrusion 2 is formed tapered. The length (height) of the strip protrusions 2 is sufficiently larger than the interval between adjacent strip protrusions 2. The relationship between the height and spacing varies depending on the target bird, but the height should be sufficiently larger than the leg length of the target bird, and the interval should be sufficiently narrower than the torso of the bird. It is preferable to set it appropriately. In the case of soil pigeons, the length of the strips should be 8 to 20 cm, and the spacing should be 3 to 5 cm. By doing so, when the bird lands, it is unable to grasp each of the thin protrusions 2, and its legs do not bend to the base material 1 or the ground, so it is forced to land with its body. As a result, even if it tries to fly, it cannot jump because its feet do not reach the base material 1 or the ground. Because of this or in anticipation of this, birds never attempt to build nests in the area where the device is installed. If the striped protrusions 2 are alternately made to have different lengths, the bird's body can be made up of these striped protrusions 2.
Because it can only be supported in an unstable state above,
Performing a belly landing itself becomes difficult.

The device of the present invention is installed in a place where birds are prohibited from landing, but the row of outer strips 2 extends outward beyond the outside wall of the place where it is installed. Since a gap is formed between the lower ends of the adjacent strip protrusions 2 on the outside, birds cannot stay between the strip protrusions 2, and the gaps between the inner strip protrusions 2 cannot enter inside. Since there is a gap between the lower ends of the strip protrusions 2, the device can be curved on the substrate plane. Therefore, installation on a curved plane is also possible.

The above equipment uses vinyl chloride resin, vinyl acetate resin,
Thermoplastic synthetic resins such as polystyrene, ABS resin, acrylic resin, polyethylene, polypropylene, fluororesin, polyamide resin, acetal resin, polycarbonate, phenolic resin, urea resin, melamine resin, unsaturated polyester resin, epoxy resin, diallyl phthalate It can be obtained by integrally molding a resin, a thermosetting synthetic resin such as a polyurethane resin, or a silicone resin. These synthetic resins can be combined with other synthetic resins, or appropriately mixed with ultraviolet absorbers, antioxidants, colorants, fillers, etc., to improve moldability, durability, weather resistance,
It is also possible to add design features, impact resistance, etc. as necessary. When made of synthetic resin,
Depending on the installation location, it can be easily cut to desired dimensions on site. As shown in the example, if the base material is made into a lattice shape, the amount of synthetic resin used can be reduced. It is convenient for transportation, storage, and construction if the base material 1 is divided into small units, and the ends are provided with recesses and recesses that can fit into each other and are arranged in series. The construction can be easily carried out by attaching double-sided adhesive tape to the back surface of the base material 1 in advance and fixing it.

When the base material 1 is placed outdoors along a horizontal plane, it is preferable that at least a portion of the lower end surface of the lattice member 1 rises above the plane on which it is placed, in order to improve drainage due to rainfall. For this purpose, for example, a part of the lattice member 1 may be formed to be somewhat thicker than other parts, or each lattice may be formed so as to be interwoven alternately in the latitudinal and longitudinal directions. By making staggered cuts in the base material and expanding them to form a lattice-like structure during use, the bulk can be reduced during transportation and storage, and water can also be drained when expanded.

(Effects of the invention) As described above, the device of the invention makes it impossible for birds to land on the device. In particular, since a gap is formed between the lower ends of the strips composing the outer row, which are open to the outside, the outer row of strips is connected to the outer edge of the place where this device is to be installed. If it is installed so that it extends further outward than the outside row, there will be no place for birds to rest their feet between the strips on the outside, and therefore birds will perch between the strips on the outside and become trapped inside. There is no fear that birds will invade, and nest building by birds can be prevented semi-permanently and reliably. Furthermore, since voids are formed between the striped protrusions, the amount of material can be reduced, which is excellent in economical efficiency.
Furthermore, since the structure is extremely simple, it is easy to manufacture and install, and it is also possible to remove and reinstall when painting or the like. Furthermore, it is harmless to humans.

[Brief explanation of the drawing]

The figure is a partial perspective view showing one embodiment of the device of the present invention. 1...Base material, 2...Striped protruding piece, 11...Void.

Claims (1)

[Claims for Utility Model Registration] (1) A planar base material in which a plurality of rows of strips are erected at predetermined intervals, and each of the strips in the outer rows is The sky opened outward between the lower ends
A device to prevent birds from building nests. (2) The device for preventing bird nest building according to claim 1, wherein the base material is in the form of a grid. (3) The nest-building prevention device for birds according to claim 1, wherein the thin protrusions are tapered. (4) The nest building prevention device for birds according to claim 1, wherein the length of the striped protrusions is sufficiently larger than the interval between the striped protrusions. (5) The length of the striped protrusions is sufficiently greater than the length of the legs of a bird, and the distance between the striped protrusions is sufficiently narrower than the body of the bird, as set forth in claim 4 of the utility model registration claim. A device to prevent birds from building nests. (6) The device for preventing nest building for birds according to claim 1, wherein the base material and the thin protrusions are integrally molded from synthetic resin. (7) The nest-building prevention device for birds as set forth in claim 1 of the utility model registration claim, which is for use with soil pigeons.