JP7349615B2 - Base station for mobile terminals and its installation method - Google Patents

Description

The present invention relates to a base station for mobile terminals in which an antenna, a control unit, and a transmitting/receiving unit are integrated, and a method for installing the base station for mobile terminals.

As a base station for mobile terminals, for example, an integrated base station for mobile terminals in which an RRU (remote radio unit) is integrated, which is composed of an antenna, a control unit, and a transmitter/receiver unit (for example, see Patent Document 1) ) and a separate base station for mobile terminals in which the RRU is separated from the antenna (for example, see Patent Document 2).

As an integrated type mobile terminal base station, one installed on a sidewalk or a facility plaza is known, for example, as in Patent Document 1.
If installed in such a case, maintenance and inspection will be easy, but the front of the device needs to be a free space in order to allow radio waves to reach it. There are also restrictions such as having to set up no-go zones around the area to avoid contact with cars and people.

Therefore, it is known that an integrated base station for mobile terminals is installed on the roof of a building, but the antenna needs to be tilted so that it faces downwards on the outside of the building, in order to efficiently transmit and receive radio waves. It is necessary to install integrated base stations for mobile terminals at the edges and corners of buildings as much as possible.
However, when installed in this way, it is dangerous during maintenance and inspection, and it is difficult to replace the device. The work is particularly difficult when there is only one worker.

Therefore, in a separate base station for mobile terminals, only the antenna is installed on the roof of a building, and other equipment such as the control unit and transmitter/receiver unit is moved away from the antenna so that workers can work safely without risk. It is installed where possible.
However, in this case, since there are two installation locations, the leased land area increases and it is necessary to provide a feeder line between the antenna and the device. Further, although failures occur less frequently on the antenna side than on the device side, failures on the antenna side are accompanied by the above-mentioned risks, and it is extremely difficult to restore the system quickly.

Utility model registration No. 3187291 JP2009-94660A

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a base station for mobile terminals that can efficiently transmit and receive radio waves and that can perform maintenance and inspection safely and quickly, and a method for installing the base station.

In order to achieve the above object, the base station for mobile terminals of the present invention has a box (10) in which an antenna, a control unit, and a transmitting/receiving unit (RRU (remote radio unit)) are collectively housed. A mobile terminal base station (100) installed in
a support member (30) that can install the box (10) in a downwardly inclined state and is rotatably and vertically movably attached to the support column (20);
A fixing member (40) for fixing the support member (30) to the support column (20) is provided ,
A wire (51) extending from the constant force spring side provided at the top of the support column (20) is connected to the support member (30) to lower or raise the support member (30) with a constant force. The present invention is characterized in that an assist device (50) capable of performing the following functions can be attached .

Further, in the method of installing a base station for a mobile terminal according to the present invention, a box (10) in which an antenna, a control unit, and a transmitting/receiving unit are housed is attached to a support (20),
a support member (30) that can install the box (10) in a downwardly inclined state and is rotatably and vertically movably attached to the support column (20);
A mobile terminal base station (100) comprising a fixing member (40) that fixes the support member (30) to the pillar (20),
The mobile terminal base station (100) is arranged so that the antenna in the box (10) faces downward outside the building (B) at the edge or corner of the roof of a building (B), and the box (10) (20) installed above the
At the time of maintenance and inspection, the box (10) is rotated inward of the building (B) via the support member (30).

Further, in the method of installing a base station for a mobile terminal according to the present invention, a box (10) in which an antenna, a control unit, and a transmitting/receiving unit are housed is attached to a support (20),
a support member (30) that can install the box (10) in a downwardly inclined state and is rotatably and vertically movably attached to the support column (20);
A mobile terminal base station (100) comprising a fixing member (40) that fixes the support member (30) to the pillar (20),
The mobile terminal base station (100) is arranged so that the antenna in the box (10) faces downward outside the building (B) at the edge or corner of the roof of a building (B), and the box (10) (20) installed above the
At the time of maintenance inspection or parts replacement, the box (10) is rotated inward of the building (B) via the support member (30), and then the box (10) is moved downward. It is characterized by what it did.

Further, in the method of installing a base station for a mobile terminal according to the present invention, a box (10) in which an antenna, a control unit, and a transmitting/receiving unit are housed is attached to a support (20),
a support member (30) that can install the box (10) in a downwardly inclined state and is rotatably and vertically movably attached to the support column (20);
A mobile terminal base station (100) comprising a fixing member (40) that fixes the support member (30) to the pillar (20),
The mobile terminal base station (100) is arranged so that the antenna in the box (10) faces downward outside the building (B) at the edge or corner of the roof of a building (B), and the box (10) (20) installed above the
At the time of maintenance inspection or parts replacement, after moving the box (10) downward, the box (10) is rotated inward of the building (B) via the support member (30). It is characterized by what it did.

Further, the present invention is characterized in that the box (10) is rotated inward of the building (B) within a range of 90 degrees to 180 degrees.

Note that the symbols in parentheses above indicate corresponding elements or matters listed in the drawings and the detailed description described below.

According to the present invention, regarding a mobile terminal base station in which a box in which an antenna, a control unit, and a transmitting/receiving unit are collectively housed is attached to a support, a support member that allows the box to be installed in a downwardly inclined state is provided. Since the box can be rotated and moved up and down relative to the support and fixed to the support, the box can be moved to any height relative to the support, and the box can be attached to the support at any height. Can be rotated around.
Therefore, the base station for mobile terminals can be installed at a high position on the edge or corner of the roof of a building, and the antenna can be directed downward to efficiently transmit and receive radio waves.

During maintenance and inspection, the box can be rotated at the installed height toward the worker, and when replacing parts, the box can be lowered from the installation position and then rotated toward the worker. Alternatively, the box can be rotated toward the worker and then lowered, making it safe and quick to perform maintenance inspections and parts replacement without requiring the worker to move to a dangerous location. Can be done.

Further, according to the present invention, there is provided an assist device in which a wire extending from the constant force spring side provided at the upper part of the support column is connected to the support member so that the support member can be lowered or raised with a constant force. By installing it, work efficiency can be further improved.

Further, the present invention is particularly useful because it is expected that installation of base stations for mobile terminals on the rooftops of buildings will increase in the future due to the spread of 5G (fifth generation mobile communication system).
Such a base station for mobile terminals and its installation method are not described at all in the above-mentioned Patent Documents 1 and 2.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view showing an installed state of a mobile terminal base station according to an embodiment of the present invention. FIG. 2 is an enlarged side view of the mobile terminal base station shown in FIG. 1. FIG. FIG. 3 is an enlarged sectional view taken along the line AA shown in FIG. 2; 3 is an enlarged perspective view showing the support member shown in FIG. 2. FIG. FIG. 3 is an enlarged perspective view showing the relationship between the assist device and the slide pipe shown in FIG. 2. FIG. FIG. 3 is a perspective view showing a state in which the support member is rotated at a high position together with the box in the mobile terminal base station according to the embodiment of the present invention. FIG. 3 is a perspective view showing a state in which the support member is rotated at a low position together with the box in the mobile terminal base station according to the embodiment of the present invention.

A mobile terminal base station and its installation method according to an embodiment of the present invention will be described with reference to the drawings.

A base station 100 for mobile terminals according to an embodiment of the present invention includes a box 10 in which an antenna (not shown), a control unit, and a transmitter/receiver unit (RRU (remote radio unit)) (not shown) are housed together, and a support 20 As shown in FIG. 1, the box 10 is installed on a pedestal 200 with the box 10 tilted downward at a corner (or even an edge) of the rooftop of the building B. The antenna is housed inside the box 10 so that its antenna surface is parallel to the front surface of the box 10 (the surface facing outward from the building B, opposite to the rear surface on the support column 20 side). When the box 10 is made vertical as shown in FIG. 1, it may be stored with only the internal antenna surface tilted downward.

As shown in FIG. 2, the mobile terminal base station 100 includes a support member 30 that supports the box 10 and a fixing member 40 that fixes the support member 30 to the support column 20. Furthermore, during work, an assist device 50 that can lower or raise the support member 30 with a constant force can be attached to the support column 20.

As shown in FIG. 3, the support column 20 has a quadrangular column shape, and the slide pipe 41 is inserted into the cavity of a slide pipe 41 formed in the center, so that the slide pipe 41 is connected to the column 20. It is mounted so that it can be moved vertically.
This restricts the slide pipe 41 from rotating in the horizontal direction with respect to the support column 10.
A stopper 45 is provided at the bottom of the support column 20, which serves as the lowest point of the slide pipe 41 to prevent the slide pipe 41 from lowering below that point.

As shown in FIG. 4, the support member 30 includes a box mounting portion 31 to which the box 10 is directly attached and stands upright, an upper horizontal plate 32 extending horizontally from the center and lower part of the box mounting portion 31, and a lower horizontal plate 32. It has a plate 33 and a connecting bar 34 that connects the ends of the upper horizontal plate 32 and the lower horizontal plate 33. Further, reinforcing bars 36 are provided diagonally at the upper part of the box attachment part 31 and at the end of the upper horizontal plate 32.
Holes 32H and 33H are formed in the center of the upper horizontal plate 32 and the center of the lower horizontal plate 33, respectively, through which the slide pipe 41 is inserted. The length of the slide pipe 41 is longer than the distance between the upper and lower holes 32H and 33H.

The slide pipe 41 has a cylindrical shape and has a hollow section with a square cross section so that the column 20 inserted therein does not rotate as described above.
Flanges 41A and 41B whose entire circumferences project outward are provided on the upper and lower surfaces of the slide pipe 41, respectively. A protrusion 41C is provided on the upper surface side of the flange 41A to which the tip of a wire 51 extending from the assist device 50 is fixed when the assist device 50 is used.

Further, protrusions 41D and 41E with holes are provided on the upper surface of the flange 41A and the lower surface of the flange 41B, and the vertically movable slide pipe 41 is fixed to the support column 20 by passing bolts 46 through the holes, respectively. It has become. Threaded holes (not shown) into which the ends of bolts 46 are inserted and screwed are formed in the support 20 at high and low positions of the support 20, and the slide pipe 41 is placed at a high position relative to the support 20 (FIG. 2). It can be fixed in a low position.
For example, if the length of the support 20 is 2000 mm, the position If the distance from the position Y is 600 mm, if the slide pipe 41 is placed at a high position (Fig. 2), the screw hole position 900 mm (300 mm + 600 mm), and when the slide pipe 41 is placed in a low position, the screw hole position
Note that the numerical value is not particularly limited, as long as screw holes are provided so that the slide pipe 41 can be fixed at at least two positions, a high position and a low position, with respect to the support column 20.

Further, an upper fixture 42 is attached to the lower side of the flange 41A via bolts 44, and a lower fixture 43 is attached to the upper side of the flange 41B via bolts 44.
The upper horizontal plate 32 of the support member 30 is placed above the upper fixture 42 , and the lower horizontal plate 33 is placed above the lower fixture 43 .

As a result, the support member 30 to which the box 10 in which the antenna is housed, including the control section and the transmitter/receiver section is attached, can freely rotate 360 degrees around the support column 20 together with the box 10. In addition, since the slide pipe 41 is vertically movable, the support member 30 is also vertically movable together with the box 10.

Note that the assist device 50 is provided with a chain 61 having a clip 62 attached to its tip, and when the assist device 50 is attached to the column 20, the clip 62 is locked to a ring 35 provided at the top of the column 20. This is to prevent falls.

As shown in FIG. 1, the base station 100 for mobile terminals configured in this way is usually installed at a corner of the roof of building B by pointing the box 10 containing the antenna from a high position toward the outside of building B. It is installed with its face facing down, which allows for efficient transmission and reception of radio waves.
At the time of maintenance inspection, as shown in FIGS. 6(a) to 6(b), a worker who has climbed to the roof of building B holds the support member 30, which is located at a high position relative to the pillar 20, horizontally with the box 10. Perform maintenance and inspection by rotating the box 10 toward the inside of building B so that the box 10 is facing toward you.
Furthermore, when replacing parts, etc., the assist device 50 can be attached to the support column 20 to move the box 10 downward via the support member 30 from the state shown in FIG. 6(b).
Further, as shown in FIGS. 6(a) to 7(a), after moving the box 10 downward, as shown in FIG. 7(b), the box 10 is moved to the building B via the support member 30. It is also possible to rotate it inward, that is, toward the worker.
Here, parts replacement refers to replacing individual parts, but also includes replacing the entire box 10 in which the antenna, control unit, and transmitting/receiving unit (RRU (remote radio unit)) are housed.

As shown in FIGS. 1 and 6, when the base station 100 for mobile terminals is installed at the corner of the roof of building B and the surface of the box 10 is parallel to the surface of building B, the base station 100 for mobile terminals If the box 10 is installed on the edge of the roof of building B and the surface of the box 10 is parallel to the surface of building B, the work can be done by rotating the box 10 inward of building B within a range of 90 degrees to 180 degrees. It can be directed towards members.

According to this, the box 10 can be rotated toward the worker and its height can be changed freely, so the worker does not have to move to a dangerous place, making it safe and easy to perform maintenance inspections and parts replacement. It can be quickly carried out by one person.

Note that although the box 10 was attached to the support member 30 by being inclined downward, if the antenna surface is inclined downward inside the box 10, as shown in FIG. 6(a), The box 10 does not have to be tilted.
Further, the support member 30 may have any configuration and shape as long as it is a member to which the box 10 is attached and supported, and is rotatably and vertically movable relative to the column 2.
Furthermore, as shown in FIG. 2, the fixing member 40 for fixing the support member 30 to the column 20 is composed of a slide pipe 41, an upper fixing fitting 42, a lower fixing fitting 43, a bolt 44, a stopper 45, and a bolt 46. , but is not particularly limited to this.
Further, in this embodiment, when raising and lowering the support member 30, the assist device 50 is attached to the support column 20 to facilitate raising and lowering the support member 30, but it is also possible to carry out the work without particularly attaching the assist device 50. can.

10 Box 20 Pillar 30 Support member 31 Box mounting part 32 Upper horizontal plate 32H hole 33 Lower horizontal plate 33H hole 34 Connection bar 35 Ring 36 Reinforcement bar 40 Fixing member 41 Slide pipe 41A Flange 41B Flange 41C Projection 41D Projection 41E Projection Part 42 Upper fixing bracket 43 Lower fixing bracket 44 Bolt 45 Stopper 46 Bolt 50 Assist device 51 Wire 61 Chain 62 Clip 100 Mobile terminal base station 200 Frame B Building

Claims (5)

A mobile terminal base station in which a box containing an antenna, a control unit, and a transmitting/receiving unit (RRU (remote radio unit)) is attached to a pole,
a support member that is capable of installing the box in a downwardly inclined state and is rotatably and vertically movably attached to the support column;
A fixing member for fixing the support member to the support column,
A wire extending from the constant force spring side provided at the upper part of the support column is connected to the support member, so that an assist device can be attached that allows the support member to be lowered or raised with a constant force. A base station for mobile terminals characterized by the following . A box that houses the antenna, control unit, and transmitter/receiver unit is attached to a pole.
a support member that is capable of installing the box in a downwardly inclined state and is rotatably and vertically movably attached to the support column;
A mobile terminal base station including a fixing member that fixes the support member to the support column,
The mobile terminal base station is installed at the edge or corner of the roof of a building so that the antenna in the box faces downward outside the building and the box is located above the support column,
A method for installing a base station for a mobile terminal, characterized in that during maintenance and inspection, the box is rotated inward of the building via the support member. A box that houses the antenna, control unit, and transmitter/receiver unit is attached to a pole.
a support member that is capable of installing the box in a downwardly inclined state and is rotatably and vertically movably attached to the support column;
A mobile terminal base station including a fixing member that fixes the support member to the support column,
The mobile terminal base station is installed at the edge or corner of the roof of a building so that the antenna in the box faces downward outside the building and the box is located above the support column,
A mobile terminal base station characterized in that during maintenance inspection or parts replacement, the box is rotated inward of the building via the support member and then moved downward. Installation method. A box that houses the antenna, control unit, and transmitter/receiver unit is attached to a pole.
a support member that is capable of installing the box in a downwardly inclined state and is rotatably and vertically movably attached to the support column;
A mobile terminal base station including a fixing member that fixes the support member to the support column,
The mobile terminal base station is installed at the edge or corner of the roof of a building so that the antenna in the box faces downward outside the building and the box is located above the support column,
A base station for a mobile terminal, characterized in that, at the time of maintenance inspection or parts replacement, the box is moved downward and then rotated inward of the building via the support member. Installation method. The method for installing a base station for a mobile terminal according to any one of claims 2 to 4, wherein the box is rotated inward of the building within a range of 90 degrees to 180 degrees. .

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