Snow and dust cover

Abstract

To provide a snow and dust cover which can prevent snow and dust from piling up on an antenna and can maintain the radio wave condition of the antenna without deterioration.SOLUTION: A snow and dust cover 10 prevents snow from accumulating on an antenna 1 and dust from collecting thereon. The snow and dust cover 10 has a first layer 12 made of a polyurea resin and a second layer 13 having a surface 14 with a low coefficient of friction, and is made up of a snow and dustproof sheet 11 in which the back surface 15 of the second layer 13 is laminated on the first layer 12. The snow and dust cover 10 is configured to cover the receiving section with the first layer 12 facing the antenna 1 and the surface 14 of the second layer 13 facing outward.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a snow and dust cover used to prevent snow, dust, etc. from accumulating on an antenna. [Background technology]

[0002] Conventionally, antennas such as parabolic antennas installed at mobile phone base stations have often been configured to be at an optimal angle and in an optimal installation state, taking into consideration the efficiency of radio wave propagation, etc. Furthermore, in areas with heavy snowfall, snow has traditionally accumulated on antennas, and when snow accumulates on an antenna in this way, there is a risk that the antenna's performance will deteriorate and it will not be able to properly transmit and receive radio waves. Therefore, covers and devices have been proposed to prevent snow from accumulating on antennas (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 59-84906 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the cover as described in the above-mentioned patent document, depending on the snowfall conditions, it may not be possible to prevent snow from accumulating on the antenna. To address this issue, a cover that covers the entire antenna may be considered, but depending on the material and shape of the cover that covers the antenna, there is a possibility that the radio wave condition may deteriorate, making it difficult to realize.

[0005] The present invention was made in consideration of such problems, and its object is to provide a snow and dust proof cover that can cover an antenna to prevent snow and dust from accumulating, and can maintain the antenna's radio wave conditions without degrading them. [Means for solving the problem]

[0006] In order to achieve this object, the present invention provides a snow and dust cover that prevents snow from accumulating on an antenna and dust from accumulating thereon, characterized in that the snow and dust cover is made of a snow and dust sheet formed from a resin that allows radio waves to pass through, and is configured to cover the receiving section of the antenna.

[0007] The present invention also provides a snow and dust cover that prevents snow from accumulating on an antenna and dust from accumulating thereon, characterized in that the snow and dust cover is made of a snow and dust sheet formed from a polyurethane resin and is configured to cover the receiving section of the antenna.

[0008] The present invention also provides a snow and dust cover that prevents snow from accumulating on an antenna and dust from collecting thereon, characterized in that the snow and dust cover has a first layer formed of a polyurethane resin and a second layer having a surface with a low coefficient of friction, and is made up of a snow and dust sheet in which the back surface of the second layer is laminated to the first layer, and is configured to cover the receiving unit with the first layer facing the antenna and the surface of the second layer facing outward.

[0009] In addition to the above configuration, the present invention is characterized in that the snow and dustproof sheet is a snow and dustproof cover configured by attaching a sheet having a surface with a low friction coefficient that constitutes the second layer to a polyurethane resin sheet that constitutes the first layer.

[0010] In addition to the above configuration, the present invention is characterized in that the snow and dustproof sheet is a snow and dustproof cover that is constructed by forming the second layer by spraying paint with a low friction coefficient onto a polyurethane resin sheet that constitutes the first layer.

[0011] In addition to the above configuration, the present invention is characterized in that the snow and dustproof sheet is configured to cover the surface of the parabolic antenna and is a snow and dustproof cover that holds the parabolic antenna in place by passing a rope over the back of the parabolic antenna. [Effects of the Invention]

[0012] According to the present invention, the antenna can be covered with a snow and dust cover to prevent snow and dust from accumulating, and since the snow and dust cover is made of a snow and dust sheet made of a resin that allows radio waves to pass through well, the radio wave condition of the antenna can be maintained without degradation.

[0013] Furthermore, according to the present invention, the antenna can be covered with a snow and dust cover to prevent snow and dust from accumulating, and since the snow and dust cover is made of a snow and dust sheet formed from a polyurea resin that has the characteristic of allowing radio waves to pass through well, the radio wave condition of the antenna can be maintained without degradation.

[0014] Furthermore, according to the present invention, the antenna can be covered with a snow and dust cover having a second layer with a low coefficient of friction on its surface to prevent snow and dust from accumulating, and since the first layer of the snow and dust cover is formed from a polyurea resin that has the characteristic of allowing radio waves to pass through well, the radio wave condition of the antenna can be maintained without degradation.

[0015] Furthermore, according to the present invention, the first and second layers are both made of sheet-like materials and are attached to each other to form the snow and dust protection cover, so that snow and dust protection and radio wave transmission can be achieved with a simple configuration.

[0016] Furthermore, according to the present invention, the second layer is formed by spraying paint onto the polyurea resin sheet that constitutes the first layer, so that snow and dust protection and radio wave transmission can be achieved with a simple configuration.

[0017] Furthermore, according to the present invention, the snow and dust proof sheet is configured to cover the surface of the parabolic antenna and is attached to the parabolic antenna with a rope, so that snow and dust proofing and radio wave transmission can be achieved with a simple configuration, particularly for the parabolic antenna. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a cross-sectional view showing the structure of a snow and dust protection cover according to an embodiment of the present invention. [Figure 2] FIG. 2 is a plan view showing the snow and dust protection cover according to the embodiment in an unfolded state. [Figure 3] 10 is a rear view showing the state in which the snow and dustproof cover according to the embodiment is attached to the antenna. FIG. [Figure 4] 2 is a perspective view showing a state in which the snow and dustproof cover according to the embodiment is attached to the antenna. FIG. [Figure 5] 10 is a perspective view showing the state in which the snow and dustproof cover according to the embodiment is attached to the antenna, from a different angle. FIG. [Figure 6] 10 is a perspective view showing the state in which the snow and dustproof cover according to the embodiment is attached to the antenna, from another angle. FIG. [Figure 7] 10 is a plan view showing a state in which a first modified example of the snow and dust protection cover according to the embodiment is unfolded. FIG. [Figure 8] FIG. 10 is a rear view showing a state in which a first modified example of the snow and dust protection cover according to the embodiment is attached to an antenna. [Figure 9] FIG. 10 is a plan view showing a second modified example of the snow and dust protection cover according to the embodiment in an unfolded state. [Figure 10] FIG. 10 is a rear view showing a state in which a second modified example of the snow and dust protection cover according to the embodiment is attached to the antenna. [Figure 11] FIG. 10 is a plan view showing a third modified example of the snow and dust protection cover according to the embodiment in an unfolded state. [Figure 12] FIG. 10 is a rear view showing a state in which a third modified example of the snow and dust protection cover according to the embodiment is attached to the antenna. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0020] 1 to 6 show embodiments of the present invention. Note that the following embodiments do not limit the scope of the invention as defined in the claims. Furthermore, not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention.

[0021] The snow and dust cover 10 according to this embodiment is a cover attached to the antenna 1 to prevent snow from accumulating on the antenna 1 and dust from accumulating thereon. Here, it is particularly used for a parabolic antenna. In this embodiment, the snow and dust cover 10 is made up of a snow and dust sheet 11 formed in a sheet shape so as to cover the receiving section of the parabolic antenna 1 (the entire section including the reflector, radiator, etc.), and the snow and dust sheet 11 is further made up of a first layer 12 and a second layer 13.

[0022] Of these, the first layer 12 is composed of a polyurethane resin sheet made of a polyurethane resin that has the characteristics of good radio wave transmission and good strength. The second layer 13 is composed of a sheet having a surface 14 with a low coefficient of friction. Here, the first layer 12 and the second layer 13 are formed by bonding the back surface 15 of the sheet of the second layer 13 to the polyurethane resin sheet of the first layer 12, and the respective sheet-like materials are bonded together to form an integrated snow and dust protection sheet 11. Here, as shown in FIG. 1 , the first layer 12 is thicker and the second layer 13 is thinner. In this way, the polyurethane resin sheet of the first layer 12 provides strength and good radio wave transmission, while the sheet (or film) of the second layer 13 having a surface 14 with a low coefficient of friction allows snow and dust adhering to the sheet surface to be easily removed.

[0023] 2 and 3, in this embodiment, a plurality of holes 16 are provided at the edge of the snow and dustproof sheet 11. As shown in FIGS. 2 to 6, by passing a rope R through these holes 16 and connecting it to another hole 16 at a symmetrical position, the antenna 1 can be easily fixed to the antenna 1 while being held therein. Note that the means for holding and fixing to the antenna 1 is not limited to this, and it is sufficient to have an appropriate fixing means depending on the size, shape, etc. of the antenna 1 (for example, an antenna other than a parabolic antenna).

[0024] In this embodiment, the snow and dust protection sheet 11 is formed in a shape similar to a square with the corners cut out, with holes 16 formed at each vertex and in the center of each straight line. The snow and dust protection sheet 11 is not limited to this shape, and may be formed in a substantially octagonal shape with holes 16A formed at each vertex, as in the snow and dust protection sheet 11A of the snow and dust protection cover 10A of the first modified example shown in FIGS. 7 and 8. The remaining configuration is similar to that of the snow and dust protection cover 10 described above, and therefore only components with an A appended to the reference numeral are shown in the figure, and a description thereof will be omitted. Components not described or shown in the figure may be similar to the snow and dust protection cover 10 described above.

[0025] Furthermore, like the snow and dust cover 10B of the second modified example shown in FIGS. 9 and 10, the snow and dust cover sheet 11B may be configured to have a substantially octagonal shape with 12 holes 16B formed at eight vertices and four holes 16B at each of the four sides, i.e., the upper right, lower right, upper left, and lower left. In this case, the holes 16B are not formed on the four sides, i.e., the upper right, lower right, upper left, and lower left. The sides with holes 16B are longer than the sides without holes 16B. Since the rest of the configuration is the same as that of the snow and dust cover 10 described above, only parts with a B are illustrated and their description is omitted. Furthermore, parts not described or illustrated may be the same as the snow and dust cover 10 described above.

[0026] Furthermore, as shown in FIGS. 11 and 12, a third modified snow and dust cover 10C may be configured to cover the antenna 1 using two snow and dust sheets 11C and 21C. Here, rectangular snow and dust sheets 11C and 21C are stacked with their orientations reversed, with holes 16C and 26C formed at four vertices and two short sides. Even when two sheets are stacked in this manner, each sheet is made of a polyurethane resin, allowing for good radio wave transmission. Since the remaining configuration is the same as that of the snow and dust cover 10 described above, only components marked with a C are illustrated and their description is omitted. Components not described or illustrated may be the same as the snow and dust cover 10 described above.

[0027] Furthermore, the snow and dust protection cover is not limited to these shapes, and may have any other appropriate shape.

[0028] As described above, according to the snow and dust cover 10 of this embodiment, the antenna 1 can be covered with the snow and dust cover 10 to prevent snow and dust from accumulating, and since the snow and dust cover 10 is made of a snow and dust sheet 11 formed from a resin that allows radio waves to pass through well, the radio wave condition of the antenna can be maintained without degradation.

[0029] Furthermore, according to the snow and dust cover 10 of this embodiment, the antenna 1 can be covered with the snow and dust cover 10 to prevent snow and dust from accumulating, and since the snow and dust cover 10 is made of a snow and dust sheet 11 formed from a polyurea resin that has the characteristic of allowing radio waves to pass through well, the radio wave condition of the antenna can be maintained without degradation.

[0030] Furthermore, according to the snow and dust cover 10 of this embodiment, the antenna 1 can be covered with the snow and dust cover 10, which has a second layer 13 with a low coefficient of friction on its surface, thereby preventing snow and dust from accumulating, and since the first layer 12 of the snow and dust cover 10 is formed from a polyurea resin which has the characteristic of allowing radio waves to pass through well, the radio wave condition of the antenna 1 can be maintained without degradation.

[0031] Furthermore, according to the snow and dust protection cover 10 of this embodiment, the first layer 12 and the second layer 13 are both made of sheet-like materials and are attached to each other to form the snow and dust protection cover 10, so that snow and dust protection and radio wave transmission can be achieved with a simple configuration.

[0032] Furthermore, according to the snow and dustproof cover 10 of this embodiment, the snow and dustproof sheet 11 is configured to cover the surface of the parabolic antenna 1 and is held to the parabolic antenna 1 by a rope R, so that snow and dustproofing and radio wave transmission can be achieved with a simple configuration, particularly for the parabolic antenna 1.

[0033] The above-described embodiment has been described to facilitate understanding of the present invention, and is not intended to limit the present invention.

[0034] For example, in the above-described embodiment, the snow and dust cover 10 is configured as the snow and dust sheet 11 to which the first layer 12 and the second layer 13 are attached, but this is not limitative. For example, the first layer 12 and the second layer 13 do not have to be attached, and the second layer 13 may be formed by spraying paint onto the first layer 12 sheet, for example.

[0035] With this type of snow and dust cover 10, the second layer 13 is formed by spraying paint onto the polyurethane resin sheet that constitutes the first layer 12, so that snow and dust protection and radio wave transmission can be achieved with a simple configuration.

[0036] In the above-described embodiment, the sheet has a two-layer structure consisting of the first layer 12 and the second layer 13, but this is not limiting and the sheet may have a single-layer structure made of a polyurethane resin sheet, for example. Furthermore, the sheet may be made of three or more layers, including a third layer having a different function in addition to the functions of the first layer 12 and the second layer 13. Furthermore, a sheet made of a resin other than polyurethane resin may be used as long as it can transmit radio waves well.

[0037] In the above-described embodiment, a parabolic antenna has been used as an example of the antenna 1, but the present invention is not limited to this and the snow and dustproof covers 10, 10A of the present invention may be applied to antennas of other shapes. Furthermore, in addition to antennas for mobile phone base stations, the snow and dustproof covers may be applied to antennas that may be affected by snow and dust, such as television antennas, marine radio antennas, and railway antennas, to provide snow and dustproof measures.

[0038] In addition, in the above-described embodiment, a sheet-shaped snow and dust protection cover 10 is used due to its advantages of ease of installation and light weight, but this is not limited to this, and the antenna may be covered with a rigid cover such as a box-shaped cover. [Explanation of symbols]

[0039] 1 Parabolic antenna (antenna) 10, 10A, 10B, 10C Snow and dust cover 11, 11A, 11B, 11C, 21C Snow and dust protection sheet 12, 12A 1st layer (Polyurea resin sheet, snow and dustproof sheet made of resin that allows radio waves to pass through) 13, 13A, 13B, 13C, 23C Second layer (sheet with a surface with a low coefficient of friction) 14,14A,14B,14C,24C surface 15 Back side 16,16A,16B,16C,26C hole R rope

Claims

1. A snow and dust cover that prevents snow from accumulating on the antenna and dust from accumulating on the antenna, It is made of snow and dustproof sheets made of resin that allows radio waves to pass through. A snow and dust cover configured to cover the receiving section of an antenna.

2. A snow and dust cover that prevents snow from accumulating on the antenna and dust from accumulating on the antenna, It is made of snow and dustproof sheets made of polyurea resin. A snow and dust cover configured to cover the receiving section of an antenna.

3. A snow and dust cover that prevents snow from accumulating on the antenna and dust from accumulating on the antenna, The snow and dust protection sheet has a first layer made of a polyurea resin and a second layer having a surface with a low friction coefficient, and the back surface of the second layer is laminated on the first layer, A snow and dustproof cover configured to cover a receiving unit with the first layer facing the antenna and the surface of the second layer facing outward.

4. The snow and dustproof cover described in claim 3, characterized in that the snow and dustproof sheet is constructed by attaching a sheet having a surface with a low friction coefficient that constitutes the second layer to a polyurethane resin sheet that constitutes the first layer.

5. The snow and dustproof cover described in claim 3, characterized in that the snow and dustproof sheet is constructed by forming the second layer by spraying paint with a low friction coefficient onto a polyurethane resin sheet constituting the first layer.

6. A snow and dust cover as described in any one of claims 1 to 5, characterized in that the snow and dust proof sheet is configured to cover the surface of the parabolic antenna and is held in place by a rope stretched across the back of the parabolic antenna.

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