JP2569864Y2 - Base stations for simplified mobile phones - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base station for a portable cellular phone, and more particularly to a base station for a portable cellular phone provided on a telephone pole supporting a high-voltage or extra-high-voltage distribution line and a communication transmission line.

[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 power consumption of a battery 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. 3 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. In the figure, the base station includes a transceiver 31 and an antenna 32 erected on the upper surface thereof. The transceiver 31 is fixed to a utility pole 34 by a fixing bracket 33 with a universal belt. The transceiver 31 is connected to a telephone office by a communication transmission line 35.

[0004] The transceiver 31 receives the radio wave from the portable telephone via the antenna 32, converts the received radio wave into a predetermined electric signal, and transmits it to the telephone station via the communication transmission line 35. The transceiver 31 converts an electric signal transmitted from the telephone station via the communication transmission line 35 into a radio wave and emits the radio wave from the antenna 32. 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]

[Problems to be solved by the present invention] 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. In addition, telephone pole 3
At the time of maintenance work such as a high-voltage distribution line (not shown) supported on the upper part of the antenna 4, there is a possibility that the antenna 32 may hinder the worker from moving up and down or work, and the antenna 32 may be damaged by the worker. Was. Further, the transmitter / receiver 31 must be firmly fixed to the utility pole 34 so that the antenna 32 is not largely shaken by wind or the like, and the fixing bracket 33 for that purpose has been expensive. In addition, when a worker accidentally puts a trunk on the antenna 32, the antenna 32 is not strong enough to support the worker, so that the antenna 32 may be damaged and the worker may crash. In addition, since the antenna 32 is attached at a relatively low position because of the high voltage distribution line above, there is also a problem that the antenna 32 is noticeable and impairs the beauty of the city.

Therefore, the main object of the present invention is to improve the propagation characteristics of the base station to cover a wide area, to facilitate the selection of the position of the base station, and to obstruct the elevating column of the worker during maintenance work. It is an object of the present invention to provide a base station for a simplified type mobile phone which does not cause damage to the worker, cause a worker to crash, or impair the beauty of the city.

[0007]

According to the present invention, a base station for a simple portable telephone is provided which is provided on an overhead ground wire which is a lightning protection facility at an upper portion thereof and is provided on a pole which supports a commercial power wiring and a communication transmission line at a lower portion thereof. The power pole has a hollow cylindrical shape, has an opening at the top, and has a cable outlet opening at a side wall, is provided between the top of the power pole and an overhead ground wire, and has an opening at the top of the power pole. It has a disk-shaped antenna base provided with an antenna extending vertically and an antenna extending vertically, and a transceiver suspended from the communication transmission line, and has an opening at the top of the utility pole, an inside of the utility pole, and an opening at the side wall of the utility pole. A cable is inserted between the cable outlet and the commercial power wiring, and the antenna and the transceiver are connected by the cable.

[0008]

[0009]

The present invention is a base station of a simple type mobile phone, in which an antenna is provided at the top of any telephone pole at an optimum position,
Since the cable is inserted from the opening at the top to the cable outlet on the side wall and the antenna and the transceiver are connected by the cable, the propagation area of the radio wave can be widened,
The number of base stations can be reduced, and the economics of the system is significantly improved. In addition, by installing an antenna at the top of the utility pole below the overhead ground wire, which is a lightning resistant facility, it does not affect transmission characteristics even during lightning strikes, and it is shielded by trees and other service lines and large buses and trucks The transmission characteristics are extremely good without being affected by the light and reflection. Further, the antenna does not hinder the worker's elevating column or construction during maintenance work on distribution lines or the like, and the antenna is not damaged by the worker. In addition, since the antenna is provided at a high position, the antenna is invisible and does not impair the beauty of the city. Further, since the antenna 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 metal unnecessary, but also there is no possibility that an accidental fall of an operator occurs due to the fixing metal or the antenna. Further, since the transmission and reception are laid by the messenger wire, the base station can be easily installed without the necessity of construction for increasing the size of the telephone pole as compared with the conventional system.

[0010]

FIG. 1 is a partially cutaway perspective view showing the configuration of a base station of a simplified portable telephone according to an embodiment of the present invention, and FIG. 2 is a partially cutaway exploded view for explaining a method of mounting the base station. It is a perspective view. 1 and 2, the base station includes an antenna 1 and a transceiver 3 adjacent to a disk-shaped antenna base 2, and the antenna 1 and the antenna base 2 are located between a top of a telephone pole 6 and an overhead ground line. , The transceiver 3 is suspended from the communication transmission path 7, and the antenna 1 and the transceiver 3 are connected by a cable 4 that passes through a hollow portion of a telephone pole 6.

Next, the configuration of the base station will be clarified by describing the method of attaching the base station. Generally, the electric pole 6 is a hollow concrete pole, supporting a communication transmission line 7 in the middle thereof, supporting a high-voltage distribution line 12 at an upper end thereof, and supporting an overhead ground wire 14 for lightning strike prevention above the supporting rod. 13 support. The communication transmission line 7 includes an overhead wire 9 fixed to the utility pole 6 with a universal belt 8, and a communication transmission line 11 wired to the wire 9 by an overhead wire fitting 10.

First, a cable outlet 6b is opened in a side wall near the communication transmission line 7 of such an existing telephone pole 6 by, for example, a drill. Next, the opening 6 at the top of the telephone pole 6
The cable inlet tube 5 with a bent end is inserted from a, and the bent portion is inserted into the cable outlet 6b from the inside. Next, one end of the cable 4 whose other end is connected to the base end of the antenna 1 is inserted from the upper end of the cable inlet tube 5, taken out from the cable outlet 6 b through the cable inlet tube 5, and the cable 4 is gradually removed. The opening 6a of the utility pole 6 is closed with the antenna stand 2 while being pulled out.

On the other hand, the transmitter / receiver 3 is suspended from the overhead wire wire 9 of the communication transmission line 7 by the hanging metal 3a, and the communication transmission line 11 is connected to the transmitter / receiver 3. Also, one end of the cable 4 taken out from the cable outlet 6b is connected to the transceiver 3. Finally, the cable outlet 6b through which the cable 4 has been inserted is filled with waterproof resin, and the installation work is completed.

The antenna 1 (and the antenna base 2)
Has a structure that is easy to replace. For example, the antenna 1 and the cable 4 are connected by a detachable connector, and the lower part of the antenna base 1 is fitted into the opening 6 a of the telephone pole 6.
Therefore, it is possible to easily change the specifications of the antenna 1 and flexibly cope with a change in surrounding conditions.

[0015]

As described above, according to the present invention, the following effects can be obtained by providing the antenna between the overhead ground wire and the top of the telephone pole. In other words, since the radio wave propagation area is wide and the number of base stations can be reduced,
Economic efficiency is significantly improved. Regardless of the mounting condition of the utility pole (such as the presence or absence of a transformer), it can be mounted on any location of the utility pole, so that base stations can be optimally arranged and communication quality can be improved. Due to the high position of the antenna, trees, other service lines,
The transmission quality is improved without being affected by shielding or reflection of large buses and trucks. Since the facility is installed between the overhead ground wire and the pole top, the antenna and base station itself will not be affected by lightning strikes. During maintenance work on a distribution line or the like, the antenna does not interfere with the elevating column of the worker and the antenna is not damaged by the worker as in the related art.
Since it is integrated with the telephone pole (antenna and cable inside the pole), it is not noticeable and does not impair the cityscape. Since there is no need for a utility pole space, the facility can be installed without rebuilding or relocating the utility pole. Further, by separately providing the antenna and the transmission / reception device, it is not necessary to fix the transmission / reception device firmly to the telephone pole as in the related art, and it is sufficient to suspend the transmission / reception device on the messenger wire of the communication transmission line.
In addition to eliminating the need for expensive fixing hardware, there is also obtained an effect that there is no possibility of a worker crashing due to the fixing hardware or the antenna.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a configuration of a base station of a simplified portable telephone according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view, partially broken away, for explaining a method of attaching a base station to the simplified type mobile phone shown in FIG.

FIG. 3 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 Antenna 3 Transceiver 4 Cable 5 Cable inlet tube 6 Power pole 6a Opening 6b Cable outlet 11 Communication transmission line 12 High voltage distribution line

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI H04Q 7/26 7/30 (56) References JP-A-2-303232 (JP, A) JP-A 4-223724 (JP, A) JP-A-4-124800 (JP, A) JP-A-3-4627 (JP, A) JP-A-52-139736 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A base station for a simplified portable telephone provided on an overhead pole supporting an overhead ground wire which is a lightning resistant facility at an upper portion thereof and provided on a power pole supporting commercial power wiring and communication transmission line at a lower portion thereof. It has a hollow columnar shape, has an opening at the top, and has a cable outlet opening at the side wall, and is provided between the top of the telephone pole and the overhead ground wire, and covers an opening at the top of the telephone pole. And a disk-shaped antenna base provided with a vertically extending antenna, and a transceiver suspended from the communication transmission line, the opening at the top of the telephone pole, the inside of the telephone pole, and the side wall of the telephone pole were opened. A base station for a simplified mobile phone, characterized in that a cable is inserted into a cable outlet and separated from the commercial power wiring, and the antenna and the transceiver are connected by the cable.