JP2707218B2 - Wireless communication antenna - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication antenna, and more particularly to an antenna for supporting an overhead ground wire and an antenna for a radio communication antenna, which is integrated with an overhead ground wire support arm important for countermeasures against distribution line lightning damage. The present invention relates to a wireless communication antenna having a function and a dual purpose.

[0002]

2. Description of the Related Art In recent years, portable telephones have become widespread, and it has become possible to freely communicate in the city. However, the conventional mobile phone has a relatively large output (600 mW), and therefore consumes a large amount of battery, has a short talk time with a single charge, and often has to be recharged. . Therefore,
2. Description of the Related Art A simplified mobile phone (personal handy phone) has been developed in which the battery consumption is reduced by reducing the output of the mobile phone (10 mW).

By the way, in order to enable the use of a simple portable telephone having such a small output, it is necessary to arrange a number of base stations having a small area in the city. FIG. 8 is a partially broken perspective view showing a configuration of a base station of a conventional simplified type mobile phone provided on a telephone pole 31. In the figure, this base station includes a transceiver 51 and an antenna 52 erected on the upper surface thereof, and the transceiver 51 is fixed to the utility pole 31 by a fixing bracket 53 with a universal belt. The transceiver 51 is connected to the telephone office by the communication transmission line 36.

A transceiver 51 receives radio waves from a portable telephone via an antenna 52, converts the received radio waves into a predetermined electric signal, and transmits the electric signal to a telephone station via a communication transmission line 36. The transceiver 51 converts an electric signal transmitted from the telephone station via the communication transmission line 36 into a radio wave and outputs the radio wave from the antenna 52. Therefore, the user of the simplified portable telephone can talk not only with the user of the other simplified portable telephone but also with the user of the general fixed telephone.

[0005]

However, in the conventional base station, since the mounting position of the antenna is low, the radio wave propagation area is small,
There was a communication problem that the propagation characteristics became unstable due to the overgrowth of trees and the shielding and reflection of large buses and trucks. Further, in urban areas, a certain interval is required for security of electric equipment or telecommunication equipment (current law: 30 cm), and the relocation of electric poles or the change of mounted electric poles has made it impossible to optimally arrange base stations. During maintenance work on a high-voltage distribution line or the like supported on the upper part of the utility pole 31, the antenna 52 may interfere with a worker's elevating column or construction, and the antenna 52 may be broken by the worker. Further, it is necessary to firmly fix the transceiver 51 to the utility pole 31 so that the antenna 52 is not largely shaken by wind or the like, and the fixing bracket 53 for that purpose has been expensive. Further, when a worker accidentally puts a trunk on the antenna 52, the antenna 52 is not strong enough to support the worker, so that the antenna 52 may be damaged, and the worker may fall down. Further, since the antenna 52 is mounted at a relatively low position due to the presence of the high-voltage distribution line above, the propagation range is restricted, and if there are trees or service lines near the utility pole 31, they are affected. Since the utility pole 31 is installed at the road edge, it is affected by shielding and reflection of buses and trucks, so that transmission characteristics are deteriorated. Further, there is a problem that the antenna 52 is noticeable and impairs the beauty of the city.

SUMMARY OF THE INVENTION Therefore, a main object of the present invention is to improve the propagation characteristics of the base station to cover a wide area without affecting the lightning damage countermeasures of the high and low voltage distribution equipment, and to easily select the position of the base station. At the time of maintenance work, it will not interfere with the lifting column of the worker, be destroyed by the worker, cause the worker to crash or damage the aesthetics of the city. An object of the present invention is to provide a wireless communication antenna having good transmission characteristics.

[0007]

The invention according to claim 1 is
A wireless communication antenna for mobile phone relay provided at the top of the telephone pole, provided vertically to the top of the telephone pole,
An arm formed of a hollow insulator for supporting an overhead ground wire and an antenna body built in the arm are integrally combined to provide two functions of "support" and "antenna" of the overhead ground wire. It is composed of

According to a second aspect of the present invention, there is provided a radio communication antenna for relaying a portable telephone, which is vertically provided on the top of a telephone pole and is mounted on a prism arm supporting an overhead ground wire which is a lightning-resistant facility. An antenna body provided two along the opposite corners of the arm of the prism, a non-slip member provided between the arm and the antenna body,
A mounting member is provided for mounting the upper end and the lower end of the antenna body to the arm through a non-slip member.

[0009]

[0010]

[0011]

According to the first aspect of the present invention, an antenna body is integrally combined with an arm which is vertically provided at the top of a telephone pole and is formed of a hollow insulator for supporting an overhead ground wire, and a conventional overhead ground wire is formed. The antenna can be installed very easily by replacing the arm with an insulated antenna-integrated arm. In addition, the arm has the strength of a conventional overhead ground wire support arm, and lightning surges (including direct hits) on the overhead ground wire
It is housed in a height that does not affect the protection angle against the rise of lightning potential of the high and low voltage distribution equipment due to the overhead ground wire without damaging the antenna part or affecting the wireless communication system at all, and as an arm Adopting a shape and a material that does not affect the characteristics at all, furthermore, the radio wave is not shielded by the arm for the overhead ground wire, and a single antenna body can constitute a non-directional antenna. In addition, since the antenna body covered with the insulator is housed in the insulator arm (double insulation structure), the weak current line and the high / low voltage line are completely isolated and the security of electricity is secured. Furthermore, since the antenna body is provided in the arm, construction can be easily performed without changing the mounting pole, and the antenna body does not interfere with work and does not impair the beauty of the city, Since it is provided at the top of the telephone pole, radio waves can be propagated over a wide range, and there is no influence from trees, drop lines, and trucks.

In the invention according to the second aspect, the two antenna bodies are mounted via the non-slip member along the opposite corners of the arm of a prism provided vertically to the top of the telephone pole, and Attach the upper and lower ends of the body with band members. Accordingly, the antenna main body does not hinder the worker's elevating columns and construction work during maintenance work on the distribution line or the like, and the antenna main body is not damaged by the worker. In addition, by providing the antenna main body at a high position, the antenna main body is not visible and does not impair the beauty of the city. In addition, since the antenna body and the transceiver are separately provided, it is not necessary to fix the transceiver to the telephone pole as in the related art, and it is sufficient to suspend the transceiver on a communication transmission line, for example. Therefore, not only is an expensive fixing bracket unnecessary, but also there is no possibility that an operator falls due to the fixing bracket or the antenna.

[0013]

[0014]

[0015]

FIG. 1 is a partially cutaway perspective view showing the structure of a base station of a simplified portable telephone according to an embodiment of the present invention.
2A is a partially cutaway perspective view showing the configuration of the antenna 1 of the base station, and FIG.
In the figure, generally, a telephone pole 31 is a hollow concrete pillar, and supports a telephone communication transmission line 32 on an upper part thereof.
At its upper end, a high-voltage distribution line 38 is supported via a high-voltage distribution line arm 37, and an overhead ground wire 4 for lightning strike prevention is provided above it.
1 is supported via an overhead ground wire arm 39. The overhead ground wire arm 39 is generally an iron pole having a square cross section, and the lower end thereof is fixed to the head of the utility pole 31, and the overhead ground wire 41 is supported at the upper end thereof through a frame insulator 40. ing. The communication transmission line 32 is connected to the utility pole 31 by the flexible belt 3.
3 and an overhead wire fitting 3
5 and a communication transmission line 36 that is wired over the wire line 34.

The base station of this embodiment has such a telephone pole 3
1 is provided. That is, this base station includes an antenna 1 and a transceiver 11, the antenna 1 is provided on an overhead ground wire arm 39, and the transceiver 11 is
2 and the antenna 1 and the transceiver 11 are
Are connected by a cable 10 that passes through the hollow portion of.

As shown in FIG. 2, the antenna 1 includes two antenna bodies 2, four fixing saddles 3 fixed to the upper and lower ends of each antenna body 2, and fixed upper and lower ends. And two mounting bands 9 for mounting the respective saddles 3 to the arm 39.

The antenna body 2 has an elongated cylindrical shape,
The arm 39 is provided along the opposing corner. The distance between the antenna bodies 2 is 1/4 of the wavelength of the radio wave for wireless communication.
Is set to By arranging the antenna main body 2 in this manner, the antenna 1 can be made non-directional.
Also, if a diversity function is added to the transceiver 11, good reception sensitivity can be obtained.

The fixing saddle 3 is a molded product made of, for example, polyester premix, and includes a saddle portion 4, a fixing portion 5, an antenna receiver 6, and an antenna retainer 7. The saddle portion 4 has a plate shape bent at a right angle, and has an inner surface in close contact with a corner of the arm 39. Further, a non-slip rubber 4a is provided on the inner surface thereof.

The fixed part 5 includes a saddle part 4 and an antenna receiver 6
Are attached to each other, and a mounting band insertion opening 5a is opened at the center thereof.

The antenna receiver 6 includes a semi-cylindrical portion 6a whose inner peripheral surface is in close contact with the outer peripheral surface of the antenna main body 2, and flanges 6b provided on both sides of the semi-cylindrical portion 6a. The back surface of the semi-cylindrical portion 6a of the antenna receiver 6 is fixed to the back surface of the saddle portion 4 via the fixing portion 5 as described above.

Like the antenna receiver 6, the antenna retainer 7 includes a semi-cylindrical portion 7a whose inner peripheral surface is in close contact with the outer peripheral surface of the antenna main body 2, and flanges 7b provided on both sides of the semi-cylindrical portion 7a. .

The antenna holder 7 has an inner peripheral surface of the semi-cylindrical portion 7a facing an inner peripheral surface of the semi-cylindrical portion 6a of the antenna receiver 6, and an inner surface of the flange 7b has a flange. 6b so as to be in close contact with the inner surface. The tightly attached flanges 6b, 7b are connected to each other by a fastening bolt 8 inserted into a hole passing through the flanges 6b, 7b.
Fixed by

The mounting band 9 is made of 66 nylon, for example, and has a band 9a and a head 9 provided at one end thereof.
b. The other end of the head 9b and the other end of the belt 9a are inserted by inserting the other end of the band 9a into the hole of the head 9b and hooking the inner surface of the hole of the head 9b and the uneven portions provided on the band 9a. Has a structure that can be easily fixed.

Next, a method of attaching the base station will be described.
First, the fixing saddle 3 is fixed to the upper and lower ends of the antenna main body 2 at a place where the work is easy. That is, one end of the antenna main body 2 is fitted into the inner peripheral surface of the antenna receiver 6 of the fixing saddle 3, one end of the antenna main body 2 is pressed by the antenna retainer 7, and the tightening bolt 8 is tightened. At this time, the fixing saddle 3 fixed to the upper end of the antenna main body 2 and the fixing saddle 3 fixed to the lower end are directed in the same direction. A cable 1 of a predetermined length is provided at the lower end of each antenna body 2.
0 is connected.

Next, a cable outlet 31b is opened on the side wall of the utility pole 31 near the communication transmission line 32 by, for example, a drill. Next, the fixing saddle 3 described above is fixed,
The column is raised with the antenna main body 2 to which the cable 10 is connected and the mounting band 9.

Next, the mounting band 9 is inserted into the mounting band insertion opening 5a of the fixing saddle 3 so that the two antenna main bodies 2 are along the opposite corners of the arm bar 39, and the mounting band 9
Is wound around the arm 9, and the head 9a and the other end 9b of the mounting band 9 are wound.
Is fixed.

Next, as shown in FIG. 3, the cable inlet tube 12 whose tip is bent from the opening 31a at the top of the utility pole 31.
And insert the bent portion into the cable outlet 31b from inside. Next, one end of the cable 10 whose other end is connected to the lower end of the antenna main body 2 is inserted through the upper end opening of the cable inlet tube 12, and the cable inlet tube 1 is inserted.
2 through the cable outlet 31b.

On the other hand, the transceiver 11 is suspended from the overhead wire 34 of the communication transmission line 32 by the hanging fitting 11a, and the communication transmission line 36 is connected to the transceiver 11. Finally, one end of the cable 10 taken out from the cable outlet 31b is connected to the transceiver 11, and the installation is completed.

If the antenna 1 and the cable 10 are connected by an easily detachable connector, the antenna 1 can be easily exchanged. Therefore, it is possible to easily change the specifications of the antenna 1 and flexibly cope with a change in surrounding conditions.

If the openings 31a and 31b of the utility pole 31 are closed with a lid member or a waterproof resin, rainwater or the like can be prevented from entering the inside of the utility pole 31.

Also, in this embodiment, the cross section of the overhead ground wire arm 39 is square, but the present invention is not limited to this, and may be any shape such as a round shape. However, in that case, the shape of the saddle portion 4 of the fixing saddle 3 needs to be a shape corresponding to the cross-sectional shape of the arm 39.

In this embodiment, the invention is applied to a base station of a simplified portable telephone. However, a communication station for a power distribution equipment patrol robot moving on an overhead ground line 41, a radio base station for on-site maintenance, etc. Needless to say, it can also be applied to.

FIG. 4A is a partially cutaway perspective view showing the configuration of an antenna 13 of a base station of a simplified portable telephone according to another embodiment of the present invention, and FIG. is there.

In the figure, this antenna 13 is composed of two fixing saddles 14 each having a built-in antenna body 2.
And a mounting band 17 for mounting the fixing saddle 14 to the arm 39.

The fixing saddle 14 is formed by integrally molding the antenna main body 2 with a resin having flexibility and insulation properties, and includes a saddle portion 15 and an antenna protection portion 16. The saddle portion 15 has a plate shape bent at a right angle, and the inner surface thereof is in close contact with a corner of the arm 39. The antenna protection unit 16 has, for example, a columnar shape, and has the antenna main body 2 built in the center thereof. The antenna protection unit 16 is provided along a corner on the back surface of the saddle unit 15.

The attachment band 17 may be formed integrally with the fixing saddle 14, may be attached to a groove formed on the inner surface of the fixing saddle 14 with an adhesive, or may pass through the fixing saddle 14. May be inserted through the mounting band insertion opening.

The mounting band 17 may be fixed at one end and the other end or at one end to the fixing saddle 14 with a stopper, or may be fixed at one end to the arm 39 with a screw. Good.

The other structure is the same as that of the embodiment shown in FIG. 1, and the description is omitted. In this embodiment, since the antenna body 2 is integrally molded in the fixing saddle 14, FIG.
It is not necessary to fix the antenna main body 2 to the fixing saddle 3 with the fastening bolt 8 or the like as in the embodiment. Therefore,
Easy to handle.

Further, since the antenna body 2 is protected by the resin, the life of the antenna can be extended. Further, there is no possibility that the antenna main body 2 comes into contact with the high-voltage distribution line 38 to cause a leakage.

FIG. 5 is a partially cutaway perspective view showing the configuration of an antenna 18 of a base station of a simplified portable telephone according to still another embodiment of the present invention. In the figure, the antenna 18 includes an antenna main body 2, an overhead ground wire arm 19, an antenna mounting base 20, and a separator 21.

The overhead ground wire arm 19 is formed of a pipe having a square cross section formed of an insulating fiber-reinforced composite material (eg, glass fiber). Overhead ground wire arm 19
As in the case of the ordinary overhead ground wire arm 39, the lower end thereof is fixed to the head of the utility pole 31 by the fixing bracket 22 with the universal belt 22a, and the upper end thereof is connected to the overhead ground wire 41 via the top insulator 40. I support.

The antenna body 2 includes an antenna mounting base 20.
And the separator 21, the overhead ground wire arm 19
Are provided along the center line of the hollow portion.

Antenna mounting base 20 and separator 2
Numeral 1 is a rectangular plate member made of resin, for example, having an antenna insertion opening opened in the center, and provided at the lower end and the upper end of the antenna body, respectively. A cable 10 with a connector 10a is connected to a lower end of the antenna body.

The cable 10, the antenna main body 2, the antenna mounting base 20 and the separator 21 are inserted from the opening at the upper end of the overhead ground wire arm 19. The antenna mounting base 20 is supported by a step provided on the inner surface of the overhead ground wire arm 19. The distal end of the cable 10 with the connector 10 a is taken out from the opening at the lower end of the overhead ground wire arm 19, and is fixed to the outer peripheral surface of the telephone pole 31 by the band 23. The connector 10a of the cable 10 is connected to the connector of the cable 10 from the transceiver 11 shown in FIG.

In this embodiment, since the aerial ground wire arm 19 made of an insulator is used, a radio wave can be shielded by the aerial ground wire arm 39 as in the embodiments of FIGS. Absent. Therefore, the omnidirectional antenna 18 can be constituted by one antenna body 2.

Further, since the antenna body 2 is provided in the overhead ground wire arm 19, the antenna body 2 is completely invisible and does not impair the beauty of the city. Further, the antenna body 2 does not hinder the work.

As shown in FIG. 6, a cable insertion port 31c is opened at the head of the utility pole 3, and the cable insertion port 3c is opened.
The free end of the cable 10 may be inserted into 1c.

As shown in FIG. 7, a cable outlet 19a is opened on the side surface of the overhead ground wire arm 19, and a cable insertion opening 24a is opened on the lid 24 at the top of the utility pole 31. Ten free ends may be taken out and inserted into the cable insertion port 24a.

In the modified example of FIGS. 6 and 7, the free end of the cable 10 is taken out from the cable outlet 31b shown in FIG.

[0051]

As described above, according to the first aspect of the present invention, the arm and the antenna, which are provided at the top of the telephone pole and are formed of a hollow insulator for supporting the overhead ground wire, are provided with lightning resistance. Since the antenna is integrated without changing the antenna, the radio wave is not shielded by the overhead ground wire arm, and a non-directional antenna can be constituted by one antenna body. Also, since the antenna body is provided inside the arm,
Construction can be easily performed without changing the mounting columns, and the antenna body does not hinder the work and does not impair the beauty of the city. In addition, since the antenna is provided vertically on the top of the telephone pole, radio waves can be propagated over a wide range, and there is no influence from trees, drop lines, trucks, and the like.

According to the second aspect of the present invention, the two antenna bodies are attached via the non-slip member along the opposing corners of the arm of a prism provided vertically to the top of the utility pole. Since the upper and lower ends of the antenna body are attached with band members, the antenna body may interfere with the lifting columns and construction of workers during maintenance work on distribution lines, etc., or the antenna body may be damaged by workers Nothing. Further, since the antenna main body is provided vertically at a high position, the antenna main body is not visible and does not impair the beauty of the city. Further, by separately providing the antenna body and the transceiver, it is not necessary to fix the transceiver to the telephone pole firmly as in the related art, and it is sufficient to suspend the transceiver on a communication transmission line, for example. Therefore, not only is an expensive fixing bracket unnecessary, but also the possibility of an accidental fall of the worker due to the fixing bracket or the antenna can be reduced. Furthermore, since there is no need for a shared space for mounting the antenna on the telephone pole, the facility can be installed without rebuilding or relocating the telephone pole.

[0053]

[0054]

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing a configuration of a base station of a simplified type mobile phone according to an embodiment of the present invention.

2 (a) is a partially broken perspective view showing the configuration of the antenna of the base station of the simplified mobile phone shown in FIG. 1, and FIG.
FIG.

FIG. 3 is a partially broken perspective view for explaining a method of attaching a base station to the simplified portable telephone shown in FIG. 1;

FIG. 4A is a partially broken perspective view showing a configuration of an antenna of a base station of a simplified portable telephone according to another embodiment of the present invention, and FIG. 4B is a sectional view of a main part thereof.

FIG. 5 is a partially determined perspective view showing a configuration of an antenna of a base station of a simplified portable telephone according to still another embodiment of the present invention.

6 is a partially broken perspective view showing an improved example of the base station of the simplified mobile phone shown in FIG.

FIG. 7 is a partially broken perspective view showing the configuration of another modified example of the base station of the simplified cellular phone shown in FIG.

FIG. 8 is a partially broken perspective view showing a configuration of a base station of a conventional simplified mobile phone provided on a telephone pole.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1,13 Antenna 2 Antenna main body 3,14 Saddle for fixing 4,15 Saddle part 4a Non-slip rubber 5 Fixing part 5a Mounting band insertion port 6 Antenna holder 7 Antenna holding 9,17 Mounting band 10 Cable 11 Transceiver 12 Cable inlet tube 16 Antenna protection part 31 Telephone pole 39 Overhead ground wire arm 41 Overhead ground wire

Continuation of the front page (72) Inventor Mitsuru Ito 3-2-222 Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture Inside Kansai Electric Power Company (72) Inventor Junji Taniguchi 3-2-222 Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture Kansai Electric Power Co., Inc. (56) References JP-A-3-147404 (JP, A) JP-A-2-303232 (JP, A) JP-A-3-235605 (JP, A) JP-A-3-58014 ( JP, U) Japanese Utility Model 2-28101 (JP, U) Japanese Utility Model 5-78016 (JP, U) Japanese Utility Model 2-68623 (JP, U)

Claims (2)

(57) [Claims] 1. An antenna for wireless communication provided on the top of a telephone pole for relaying a mobile phone, the antenna being provided vertically to the top of the telephone pole, and having an upper end supporting an overhead ground wire which is a lightning-resistant facility. An arm, which is a metal arm formed of a hollow insulator, an antenna body built in the arm, and a support member for supporting the upper and lower ends of the antenna body with the hollow portion of the arm. , Wireless communication antenna. 2. A wireless communication antenna for relaying a portable telephone, wherein the antenna is provided vertically on a top of a telephone pole, and is mounted on an arm of a prism supporting an overhead ground wire, which is a lightning-resistant facility, on the upper part of the pole. An antenna body provided along two opposing corners of the arm, a non-slip member provided between the arm and the antenna, and a non-slip upper end and a lower end of the antenna main body. A mounting member for mounting to the arm through a member,
Antenna for wireless communication.