JP2016208507A - Wireless base station structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless base station structure capable of dealing with a plurality of communication common carriers, and of achieving space-saving and cost reduction.SOLUTION: A wireless base station structure 1 comprises: antennas 7a-7c that transmit/receive an electric wave; and a plurality of wireless devices 9a-9c connected with the antennas 7a-7c, and that perform communication processing on the basis of the electric wave transmitted/received by the antennas 7a-7c. The wireless devices 9a-9c are set for each of a plurality of different communication common carriers, and the antennas 7a-7c are provided on a signboard 50.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a radio base station structure.

  In recent years, the amount of communication data has increased with the spread of mobile communication terminals such as smartphones. When the amount of data increases, the communication speed decreases, so that further improvement is demanded from the communication carrier. In view of such a situation, a new frequency band (for example, 3.5 GHz band) is allocated to a communication carrier, and improvement of communication quality is expected (for example, see Non-Patent Document 1).

“Authorization of the establishment plan of a specific base station for the introduction of the 4th generation mobile communication system”, [online], December 19, 2014, Ministry of Internal Affairs and Communications, [April 15, 2015 search], Internet < http://www.soumu.go.jp/menu_news/s-news/01kiban14_02000214.html>

  In places where users using mobile communication terminals are concentrated, the amount of data communication increases, and the communication speed of the entire network may decrease. As a result, communication may become unstable or communication may not be possible. Therefore, it is preferable that many radio base stations are installed in a place where many users gather. However, there are many buildings where many users gather. Therefore, it is not easy to secure a place for installing the base station. In addition, since there are a plurality of communication carriers, if a base station is to be installed for each communication carrier, a space for installing the base station is further required. Even if space can be secured, enormous costs are required to install equipment such as towers. Therefore, it is not easy to realize a concept of installing a plurality of base stations in a specific area.

  An object of the present invention is to provide a radio base station structure that can cope with a plurality of communication carriers, and that can achieve space saving and cost reduction.

  A radio base station structure according to the present invention includes an antenna that transmits and receives radio waves, and a plurality of radio apparatuses that are connected to the antenna and perform communication processing based on radio waves that are transmitted and received by the antennas. A wireless device is set for each business operator, and an antenna is provided on a signboard.

  In this radio base station structure, an antenna is provided on the signboard. Signboards are often provided in places where users concentrate, such as in front of a station or downtown. Therefore, space saving and cost reduction can be achieved as compared with the case where equipment (tower) for installing the base station is provided. In the wireless base station structure, a wireless device is set for each of a plurality of different communication carriers. That is, a wireless device is set corresponding to each frequency band for each telecommunications carrier that uses different frequency bands. Thereby, it can respond to a some communication carrier. In this way, in the wireless base station structure, since one wireless base station structure is shared by a plurality of communication carriers, costs can be reduced compared to the case where a wireless base station is installed for each communication carrier. Can do.

  In one embodiment, a plurality of antennas are provided corresponding to a plurality of wireless devices, and each antenna may be connected to each of the plurality of wireless devices. According to this configuration, since an antenna can be used for each communication carrier, better communication is possible.

  In one embodiment, the wireless device may be provided on the signboard together with the antenna. In this configuration, since the antenna and the wireless device are provided on the signboard, it is easy to route the wiring that connects the antenna and the wireless device. Therefore, installation of the radio base station structure can be simplified.

  In one embodiment, a termination device connected to the wireless device and a power source that supplies power to the wireless device and the termination device may be provided.

  In one embodiment, the antenna may be located inside the signboard. In this configuration, the antenna can be attached without impairing the original advertising function of the signboard and the design of the signboard. Moreover, deterioration of the antenna can be suppressed.

  In one embodiment, the light emitting device is disposed in the signboard, and the antenna may be disposed at a position that does not overlap the light emitting device when viewed from the light emitting surface side of the signboard. With this configuration, it is possible to suppress the antenna from blocking the light emitted from the light emitting device. Accordingly, it is possible to suppress the darkness of a part of the signboard and to arrange the antenna while maintaining the original function of the signboard.

  In one embodiment, the antenna includes a plurality of antenna modules, and each of the plurality of antenna modules includes a light emitting device at both ends in the left-right direction and / or both ends in the up-down direction of the sign. You may arrange | position in the position to pinch | interpose. In this configuration, since the antenna is disposed at a position sandwiching the light emitting layer, it is possible to reliably suppress the antenna from blocking the light emitted from the light emitting device.

  In one embodiment, each of the plurality of antenna modules may be arranged such that the radiation direction of the radio wave faces the central portion of the signboard. In this configuration, a street cell can be suitably formed in the area in front of the signboard.

  In one embodiment, each of the plurality of antenna modules has a case that houses the antenna element, and the case may be formed of a transparent material. In this structure, since a case permeate | transmits light, it can suppress further that a part of signboard becomes dark.

  In one embodiment, the antenna may be arranged on a signboard whose casing is made of metal. In this configuration, the housing functions as a wave reflector. Therefore, the directivity of the radio wave transmitted from the antenna can be further enhanced.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to respond to a some telecommunications carrier, space saving and cost reduction can be achieved.

1 is a diagram illustrating a communication system including a radio base station structure according to an embodiment. It is a figure which shows the building in which the signboard with which the antenna of the radio base station structure was attached was provided. It is a figure which shows the structure of a wireless base station. It is a figure which shows the inside of the signboard to which the antenna was attached. It is a figure which shows the radio base station structure which concerns on another form. It is a figure which shows the signboard with which the antenna of the radio base station structure which concerns on another form was attached. It is a figure which shows the signboard with which the antenna of the radio base station structure which concerns on another form was attached. It is a figure which shows the signboard with which the antenna of the radio base station structure which concerns on another form was attached. It is a figure which shows the signboard with which the antenna of the radio base station structure which concerns on another form was attached.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will be omitted.

  FIG. 1 is a diagram illustrating a communication system including a radio base station structure according to an embodiment. As shown in FIG. 1, in the communication system, the radio base station structure 1 is connected to a GC (Group Unit Center) station 100. The GC station 100 is provided with a plurality of wireless device control devices (for example, BBU: Base Band Unit) 120. The radio equipment control device 120 is provided for each communication carrier. The radio base station is connected to the radio equipment control device 120 so as to communicate with each other. Each of the radio equipment control devices 120 of the GC station 100 is connected to the network NW.

  FIG. 2 is a diagram illustrating a building provided with a signboard to which an antenna having a radio base station structure is attached. FIG. 3 is a diagram illustrating a configuration of the radio base station. The radio base station structure 1 is installed in a building B where a signboard 50 is provided. The radio base station structure 1 performs communication with a mobile communication terminal such as a mobile phone. As shown in FIG. 3, the radio base station structure 1 includes a termination device 3, a power source 5, a plurality of antennas 7a, 7b, and 7c, and a plurality of radio devices 9a, 9b, and 9c.

  The termination device 3 is connected to each radio device control device 120 of the GC station 100 via an optical line. The termination device 3 performs conversion from an optical signal to an electrical signal and conversion from an electrical signal to an optical signal. Further, the termination device 3 performs a multiplexing process of the optical signal, a separation process of the multiplexed optical signal, and the like. As shown in FIG. 4, the termination device 3 is electrically connected to the wireless devices 9a to 9c. The terminating device 3 converts the optical signal transmitted from the wireless device control device 120 into an electrical signal and outputs the electrical signal to the wireless devices 9a to 9c, and converts the electrical signal output from the wireless devices 9a to 9c into an optical signal. To the wireless device control device 120 via the optical line.

  The power source 5 supplies power to the termination device 3 and the wireless devices 9a to 9c. As shown in FIG. 4, the power supply 5 is electrically connected to each of the termination device 3 and the wireless devices 9a to 9c.

  The antennas 7a to 7c receive radio waves from the mobile communication terminal and transmit radio waves to the mobile communication terminal. Each of the antennas 7a to 7c includes a plurality of antenna modules. The antenna module forms, for example, an 8 × 8 MIMO (multiple-input and multiple-output) base station antenna. That is, eight antenna modules are provided for each of the antennas 7a to 7c. The antennas 7a to 7c transmit radio waves related to signals output from the radio apparatuses 9a to 9c to the mobile communication terminal, and output signals related to radio waves received from the mobile communication terminals to the radio apparatuses 9a to 9c.

  The wireless devices 9a to 9c perform communication processing based on radio waves transmitted and received by the antennas 7a to 7c. The wireless devices 9a to 9c are provided for each communication carrier. In the present embodiment, three wireless devices 9a to 9c are provided. That is, the wireless base station is provided with wireless devices corresponding to the three carriers. More specifically, for example, the wireless device 9a is set for Company A, the wireless device 9b is set for Company B, and the wireless device 9c is set for Company C. When three wireless devices are provided, there may be two communication carriers. In this case, for example, one wireless device is used by one communication carrier, and two wireless devices are used by another communication carrier.

  Each of the wireless devices 9a to 9c includes a configuration (for example, a reception unit, a transmission unit, a communication control unit, etc.) necessary for communicating with the mobile communication terminal. As the wireless devices 9a to 9c, known devices can be used, and detailed description of the configuration is omitted.

  Each of the wireless devices 9a to 9c performs communication at, for example, a frequency of 3.5 GHz band. The wireless devices 9a to 9c are capable of communication using, for example, a TDD (Time Division Duplex) type LTE (Long Term Evolution) -Advanced. Each of the wireless devices 9a to 9c has a different frequency band to be used for each communication carrier. Specifically, for example, 40 MHz width is allocated to the communication carrier in the 3.5 GHz band. The wireless devices 9a to 9c are set to perform communication processing in each band of 40 MHz width for each communication carrier. Each of the wireless devices 9a to 9c performs communication processing based on the electrical signal output from the termination device 3 and the signals related to the radio waves output from the antennas 7a to 7c.

  In the present embodiment, the termination device 3, the power source 5, and the wireless devices 9a to 9c are installed in a building B to which a signboard 50 is attached.

  In the present embodiment, the antennas 7a to 7c are attached to the sign 50 as shown in FIGS. The signboard referred to here means an object that displays characters, diagrams, images, moving images, etc., such as an advertisement signboard, an electronic signboard, a road sign, and a display board. The signboard 50 includes a frame body 52, a signboard surface portion 54 attached to the frame body 52, and a light emitting device 56. The frame body 52 has, for example, a substantially rectangular shape. A space is formed inside the frame body 52. The signboard surface portion 54 is attached so as to cover the space of the frame body 52. The signboard surface portion 54 is made of, for example, resin and has light transmittance. The light emitting device 56 includes, for example, an LED (Light Emitting Diode). For example, the light emitting device 56 is provided on the inner side surface of the frame body 52 along the vertical direction. The signboard 50 is attached to the building B by attachment members 60 and 61.

  The antennas 7 a to 7 c are attached to support members 58 and 59 provided in the frame body 52. The support members 58 and 59 are spanned across a pair of opposed inner surfaces of the frame body 52. The support member 58 and the support member 59 are arranged at a predetermined interval in the vertical direction. In the present embodiment, the antenna 7 a and the antenna 7 b are attached to the support member 58. The antenna 7 c is attached to the support member 59. Note that noise from the light emitting device may interfere with radio waves transmitted and received by the antennas 7a to 7c. Therefore, when a light emitting device is provided, it is preferable to provide a shield member or the like that suppresses noise interference from the light emitting device.

  The radio base station structure 1 having the above configuration is installed in advance in a building B where a signboard 50 is provided, for example, and the radio devices 9a to 9c are set according to a request from a communication carrier. Moreover, when a communication provider provides the wireless devices 9a to 9c (antennas 7a to 7c), the wireless devices 9a to 9c (antennas 7a to 7c) are installed in the building B. In this case, since the termination device 3 and the power source 5 are provided, the radio base station structure 1 can be configured by connecting the termination device 3 and the power source 5 to the radio devices 9a to 9c (antennas 7a to 7c). Of course, the radio base station structure 1 can also be provided including the signboard 50.

  As described above, in the radio base station structure 1 according to this embodiment, the antennas 7 a to 7 c are attached to the signboard 50. The signboard 50 is often provided in a place where users concentrate, such as in front of a station or downtown. Therefore, space saving and cost reduction can be achieved as compared with the case where equipment (tower) for installing the base station is provided. In the radio base station structure 1, radio devices 9a to 9c are set for each of a plurality of different communication carriers. That is, the wireless devices 9a to 9c are set corresponding to each frequency band for each communication carrier that uses different frequency bands. Thereby, it can respond to a some communication carrier. As described above, in the wireless base station structure 1, since one wireless base station structure is shared by a plurality of communication carriers, costs are reduced as compared with the case where a wireless base station is installed for each communication carrier. be able to.

  In the present embodiment, a plurality of antennas 7a to 7c are provided, and each of the plurality of radio apparatuses 9a to 9c may be connected to each of the antennas 7a to 7c. According to this configuration, since the antennas 7a to 7c can be used for each communication carrier, better communication is possible.

  In the present embodiment, the antennas 7 a to 7 c are arranged inside the signboard 50. In this configuration, the antennas 7a to 7c can be attached without impairing the original advertising function of the signboard 50 and the design of the signboard 50. Further, by disposing the antennas 7a to 7c inside the signboard 50, deterioration of the antennas 7a to 7c can be suppressed.

  The present invention is not limited to the above embodiment. In the above-described embodiment, an example in which the antennas 7a to 7c are attached to the signboard 50 has been described as an example. However, the signboard 50 includes the terminal device 3, the power supply 5, and the wireless devices 9a to 9c in addition to the antennas 7a to 7c. It may be attached. With this configuration, it is easy to handle the wiring connecting the respective parts. Further, it is not necessary to secure a space for installing the wireless devices 9a to 9c in the building B. Therefore, installation of the radio base station structure 1 can be simplified.

  In the embodiment described above, the antennas 7a to 7c are attached to the support members 58 and 59 provided inside the signboard 50 as an example. However, the positions where the antennas 7a to 7c are attached inside the signboard 50 are described here. It is not limited.

  In the said embodiment, although the signboard 50 to which the antennas 7a-7c were attached demonstrated to the example the form which protrudes from the side wall of the building B, the form of the signboard 50 is not limited to this. For example, the signboard may be provided along the wall surface of a building, for example, as installed in a convenience store. Or the form in which the said signboard exists independently may be sufficient as a signboard. Any signboard having an advertisement function or the like can be applied. In particular, since a power source is secured for a signboard equipped with electrical equipment such as lighting, it is not necessary to prepare a power source for installing the radio base station structure 1. Therefore, the radio base station structure 1 can be installed more easily.

  In the said embodiment, the signboard surface part 54 of the signboard 50 was formed with the resin etc. which have a light transmittance, and demonstrated the form which arrange | positions the antennas 7a-7c inside the signboard 50 as an example. However, the positions where the antennas 7 a to 7 c are attached are not limited to the inside of the signboard 50.

  For example, as illustrated in FIG. 5A, the antennas 7 a to 7 c may be disposed on the attachment members 60 and 61 of the signboard 50. Specifically, for example, the antennas 7 a and 7 b are disposed on the attachment member 60, and the antenna 7 c is disposed on the attachment member 61.

  Further, as shown in FIG. 5B, the antennas 7 a to 7 c may be arranged at the edge of the signboard 50. Specifically, for example, the antennas 7 a to 7 c are arranged on the signboard surface portion 54 of the signboard 50. More specifically, the antenna 7 a is arranged at the upper part of the sign 50, the antenna 7 b is arranged at the side of the sign 50, and the antenna 7 c is arranged at the lower part of the sign 50. 5A and 5B, in the case where the signboard surface portion 54 does not have optical transparency (in the case where the signboard surface portion 54 is made of metal and no light emitting device is provided therein), the structure shown in FIG. It is particularly effective. The mounting positions of the antennas 7a to 7c on the signboard 50 are not particularly limited as long as they do not impair the original function (advertisement function) of the signboard.

  As shown in FIG. 6, the antenna 80 may be disposed on the signboard 70. The signboard 70 is arrange | positioned at side surfaces, such as a shop, for example. The signboard 70 includes a frame body (housing) 71, a signboard surface portion (not shown) attached to the frame body 71, and a light emitting device 72. The signboard surface portion is attached so as to cover the space of the frame body 71. The signboard surface portion is made of, for example, resin and has light transmittance.

  The frame body 71 has a box shape. The frame body 71 has a main body portion 71a attached to a side surface of a store or the like, and first to fourth side portions 71b, 71c, 71d, 71e. The main body portion 71a and the first to fourth side portions 71b to 71e are plate-like members and are made of metal. The main body 71a has a rectangular shape (rectangular shape). Each of the first to fourth side portions 71b to 71e is disposed on each side of the main body portion 71a and is erected substantially perpendicular to the main body portion 71a. A light emitting device 72 is disposed on the main body 71 a of the frame body 71. The light emitting device 72 includes, for example, a fluorescent lamp, an LED, and the like. One light emitting device 72 may be arranged in the frame body 71, or a plurality of light emitting devices 72 may be arranged. In the example shown in FIG. 6, a plurality (four in this case) of light emitting devices 72 are arranged. Specifically, the light emitting device 72 is disposed with a predetermined interval in the left-right direction and is disposed with a predetermined interval in the vertical direction.

  The antenna 80 includes an antenna module 80a and an antenna module 80b. The antenna 80 is disposed in the frame body 71. The antenna 80 is disposed at a position that does not overlap the light emitting device 72 when viewed from the light emitting surface side of the signboard 70. As shown in FIG. 6, the light emitting surface side of the signboard 70 is the front side of the signboard 70 when the signboard 70 is disposed on a side surface of a store or the like. That is, the light emitting surface of the signboard 70 is a light emitting surface portion.

  Specifically, the antenna modules 80 a and 80 b of the antenna 80 are disposed at both ends in the left-right direction of the frame body 71. Each of the antenna modules 80 a and 80 b is disposed at a position sandwiching the light emitting device 72 on the first side 71 b side and the second side portion 71 c side of the frame body 71. The antenna module 80a is disposed so that the radiation direction of the radio wave faces the right side in the figure. The antenna module 80b is arranged so that the radiation direction of the radio wave faces the left side in the figure. That is, the antenna module 80a and the antenna module 80b are arranged so that the radio waves intersect each other.

  The antenna modules 80a and 80b have cases (antenna radomes) that accommodate antenna elements and the like. The case is made of a transparent material. The antenna module 80a and the antenna module 80b are connected to the distributor 82. The distributor 82 is connected to the wireless device 9a (9b, 9c). The distributor 82 is arrange | positioned at the 4th side part 71e, for example. The distribution position of the distributor 82 is not limited as long as it does not block the light emitted from the light emitting device 72. FIG. 6 shows an example in which two antenna modules 80a and 80b are arranged in the signboard 70. However, the number of antenna modules (antennas) arranged in the signboard 70 depends on the design. What is necessary is just to set suitably.

  In the radio base station structure having the above configuration, the antenna module 80 a and the antenna module 80 b are attached to the signboard 70. The signboard 70 is arrange | positioned at side surfaces, such as a shop, for example. Therefore, space saving and cost reduction can be achieved as compared with the case where equipment (tower) for installing the base station is provided. In addition, the antenna module 80 a and the antenna module 80 b are disposed at each of the left and right ends of the signboard 70. The antenna module 80a and the antenna module 80b are arranged so that the radiation direction of radio waves faces the center of the signboard 70 and the radiation directions of radio waves intersect each other. Thereby, a street cell can be suitably formed in an area in front of a store or the like where the signboard 70 is disposed.

  The cases of the antenna module 80a and the antenna module 80b are formed of a transparent material. Thereby, since light is transmitted through the cases of the antenna module 80a and the antenna module 80b, the antenna module 80a and the antenna module 80b can further suppress the shielding of the light emitted from the light emitting device 72. Note that the case may be formed of an opaque material.

  The frame body 71 of the signboard 70 is made of metal. As a result, the frame body 71 functions as a radio wave reflector. Therefore, the directivity of radio waves transmitted from the antenna module 80a and the antenna module 80b can be further enhanced.

  Further, as shown in FIG. 7A, the antenna module 80a and the antenna module 80b are arranged on the third side portion 71d side (upper portion of the frame body 71) at each end in the left-right direction of the frame body 71. May be. Further, as shown in FIG. 7B, the antenna module 80a and the antenna module 80b are arranged on the fourth side portion 71e side (lower portion of the frame body 71) at each end in the left-right direction of the frame body 71. May be. As shown in FIG. 8, the antenna module 80a is arranged at the center in the left-right direction of the frame body 71 and on the third side portion 71d side, and the antenna module 80b is at the center in the left-right direction of the frame body 71 and You may arrange | position at the 4th side part 71e side. That is, the antenna module 80a and the antenna module 80b may be arranged at positions sandwiching the light emitting device 72 at both ends in the vertical direction of the signboard 70. Moreover, the antenna module may be arrange | positioned at the both ends of the left-right direction of the signboard 70, and the both ends of an up-down direction. In short, it is only necessary that the antenna is disposed at a position that does not overlap the light emitting device 72 when viewed from the light emitting surface side of the signboard 70.

  Moreover, in FIGS. 6-8, the form arrange | positioned so that each radiation direction of the antenna module 80a and the antenna module 80b might face the center part of the signboard 70 was demonstrated to an example. However, as shown in FIG. 9, the radiation directions of the radio waves of the antenna module 80a and the antenna module 80b may be arranged so as to face opposite sides. The antenna module 80 a and the antenna module 80 b are disposed at the center of the frame body 71. Specifically, the antenna module 80a and the antenna module 80b are arranged between the light emitting devices 72 arranged at a predetermined interval in the left-right direction. The antenna module 80a is disposed so that the radiation direction of radio waves faces the left side in the figure. The antenna module 80b is disposed so that the radiation direction of the radio wave faces the right side in the figure. Also in the antenna module 80a and the antenna module 80b shown in FIG. 9, a street cell can be suitably formed in a region in front of a store or the like where the signboard 70 is disposed.

  In the said embodiment, as FIG. 4 showed, the antenna 7a-7c demonstrated as an example the form which exhibits a rectangular shape (square shape). However, the shape of the antennas 7a to 7c may be set as appropriate according to the configuration of the sign 50, and may be any one that can be applied to the mounting position of the sign 50.

  In the above-described embodiment, an example in which three antennas 7a to 7c are provided according to the number of the wireless devices 9a to 9c has been described as an example, but it is sufficient that at least one antenna is provided. For example, when the number of wireless devices is large with respect to the number of antennas, it is only necessary to provide a duplexer for enabling shared use of antennas between the wireless devices and the antennas. When the antenna is shared, the space for arranging the antenna may be small. Therefore, the present invention can be applied to signboards having various aspects (shapes).

  In the above embodiment, an example in which an antenna module of 8 × 8 MIMO is mounted on each of the antennas 7a to 7c has been described as an example, but the configuration of the antennas 7a to 7c is not limited to this.

  In the above-described embodiment, each of the wireless devices 9a to 9c has been described as an example in which communication is performed at a frequency of 3.5 GHz. However, the wireless devices 9a to 9c are compatible with other wireless systems and other frequency bands. Is possible.

  In the above-described embodiment, an example in which the wireless device control device 120 is provided in the GC station 100 has been described as an example, but the wireless device control device 120 may be provided in a place other than the GC station 100.

  Communication processing performed in the wireless devices 9a to 9c can also be applied to a wireless LAN.

  As one usage pattern of the radio base station structure 1, a plurality of radio devices can be used by a single carrier.

  DESCRIPTION OF SYMBOLS 1 ... Wireless base station structure, 3 ... Termination apparatus, 5 ... Power supply, 7a-7c ... Antenna, 9a-9c ... Wireless apparatus.

Claims (10)

An antenna for transmitting and receiving radio waves,
A plurality of wireless devices connected to the antenna and performing communication processing based on the radio waves transmitted and received by the antenna;
The wireless device is set for each of a plurality of different carriers.
The antenna has a radio base station structure provided on a signboard. A plurality of the antennas are provided corresponding to the plurality of wireless devices,
The radio base station structure according to claim 1, wherein each of the antennas is connected to each of the plurality of radio apparatuses.   The radio base station structure according to claim 1, wherein the radio apparatus is provided on the signboard together with the antenna. A terminating device connected to the wireless device;
The radio base station structure according to claim 1, further comprising: a power source that supplies power to the radio device and the termination device.   The radio base station structure according to claim 1, wherein the antenna is arranged inside the signboard. A light emitting device is arranged in the signboard,
The radio base station structure according to claim 5, wherein the antenna is disposed at a position that does not overlap the light emitting device when viewed from a light emitting surface side of the signboard. The antenna includes a plurality of antenna modules,
Each of the said several antenna module is arrange | positioned in the position which pinches | interposes the said light-emitting device in the both ends of the left-right direction of the said signboard, and / or the both ends of the up-down direction of the said signboard. Radio base station structure.   The radio base station structure according to claim 7, wherein each of the plurality of antenna modules is arranged such that a radiation direction of the radio wave faces a central portion of the signboard. Each of the plurality of antenna modules has a case for accommodating an antenna element,
The radio base station structure according to claim 7 or 8, wherein the case is formed of a transparent material.   The radio base station structure according to any one of claims 6 to 9, wherein the antenna is arranged on the signboard having a casing made of metal.

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