JP2016111399A - Antenna for broadcasting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antenna for broadcasting capable of easily installing for receiving a television broadcasting or a radio broadcasting in a shelter in the case of a disaster occurrence, without depending on an expert.SOLUTION: An antenna for broadcasting 1 according to the present invention, comprises: a reference pole 310 that is vertically fixed to an installation surface 202; and a plurality of antennas 330 to 333 for a UHF broad cast wave which is connected to a side surface of the reference pole. Each antenna of the plurality of antennas 330 to 333 for the UHF broad cast wave has first hinge parts 330a to 333a which can bend in a connection part with the reference pole 310. By releasing the first hinge parts 330a to 333a form the bending state caused by a self-weight of each antenna in a state of non-restriction, the antenna for broadcasting extends from the side surface of reference pole 310 in a horizontal direction and in a radial state.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a broadcasting antenna that can be easily installed.

  As a means for obtaining disaster information at an evacuation center in the event of an emergency disaster, it is effective to use broadcasts such as television broadcasts and radio broadcasts that do not depend on the telephone network or the Internet. As a means of obtaining disaster information, the use of portable information terminals such as smartphones can be considered, but it is difficult for disaster victims who are not possessed at the time of a disaster or who are unfamiliar with the operation to obtain necessary disaster information. is there.

  However, if there are no broadcast receiving facilities at the evacuation center, or if it is difficult to receive the radio waves for broadcasting due to the structure of the evacuation shelter building, it is possible to quickly watch TV broadcasts. It becomes a problem because there is not.

  The above problem can be solved by installing a new broadcast receiving facility at the evacuation center, but if the damage caused by the disaster is so great that specialists cannot perform the installation work, good broadcast radio waves will be generated. It becomes difficult to install broadcast receiving equipment so that it can be received.

  With respect to such a problem, Patent Document 1 discloses an antenna installation direction adjustment support method and a digital broadcast receiving apparatus that can adjust the antenna direction even by one person.

JP 2011-55313 A

  However, in the invention described in Patent Document 1, it is necessary to install a dedicated audio signal mixer and audio signal separator inside and outside the digital broadcast receiver. Therefore, a dedicated broadcast receiving apparatus has to be prepared for adjusting the direction of the antenna, and there is a problem that the installation cost becomes high.

  An object of the present invention made in view of such a point is to provide a broadcasting antenna that can be easily installed without relying on an expert in order to receive television broadcasting or radio broadcasting in an evacuation center or the like. is there.

In order to solve the above-described problems, a broadcasting antenna according to the present invention includes a reference pole fixed perpendicularly to an installation surface and a plurality of UHF broadcast waveband antennas connected to the side surface of the reference pole. Each antenna of the plurality of UHF broadcast wave band antennas has a first hinge portion that can be bent at a connection portion with the reference pole, and the first hinge portion is in its unconstrained state due to its own weight. By being released from the bent state, it extends horizontally and radially from the side surface of the reference pole.

  Further, it is preferable to further include at least one FM broadcast wave band antenna connected to a side surface of the reference pole.

  Further, it is preferable that at least one of the FM broadcast wave band antennas also serves as a UHF broadcast wave band antenna.

  The plurality of UHF broadcast wave band antennas and the FM broadcast wave band antennas are preferably arranged at equal intervals on the circumference of the side surface of the reference pole.

  The reference pole is preferably an AM broadcast wave band antenna.

  Preferably, each antenna further includes a second hinge portion, and the angle of the antenna line on the tip side of the second hinge portion can be adjusted horizontally or vertically according to the polarization plane of the received radio wave.

  In addition, the reference pole further includes at least one ring that can be rotated around the center axis of the reference pole or can be translated along the center axis, and the plurality of UHF broadcast waveband antennas include the ring It is preferable to be connected to the reference pole via

  The base further includes a base including the installation surface, a hollow cover that covers the reference pole and the plurality of UHF broadcast wave band antennas from the side, and the cover has a longitudinal length of the reference pole with respect to the base. It is preferable that the antenna can be stored in the base by being slid in a direction, and the antennas are in the unconstrained state by the cover being slid in the base direction.

  ADVANTAGE OF THE INVENTION According to this invention, in order to receive television broadcasting or radio broadcasting in an evacuation center etc., the broadcasting antenna which can be installed easily without relying on an expert can be provided.

It is a front view which shows the state in which the broadcasting antenna which concerns on 1st Embodiment of this invention was accommodated. It is a front view which shows the state at the time of use of the broadcasting antenna which concerns on 1st Embodiment of this invention (at the time of horizontal polarization reception). It is a figure which shows an example of a structure of the 1st hinge part of the broadcast antenna which concerns on embodiment of this invention. It is a front view which shows the state at the time of use of the broadcasting antenna which concerns on 1st Embodiment of this invention (at the time of vertical polarization reception). It is a top view which shows the state at the time of use of the broadcasting antenna which concerns on 1st Embodiment of this invention (at the time of vertical polarization reception). It is a figure which shows the connection state of the broadcasting antenna and receiver which concern on 1st Embodiment of this invention. It is a figure which shows the cross section of the cover and base which the broadcasting antenna which concerns on 1st Embodiment of this invention has. It is a figure which shows the connection state of the antenna rod and reference | standard pole of the broadcasting antenna which concern on 1st Embodiment of this invention. It is a top view which shows the state at the time of use of the broadcasting antenna which concerns on 2nd Embodiment of this invention (at the time of vertical polarization reception).

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

(First embodiment)
FIG. 1 is a diagram showing a state in which a broadcasting antenna 1 according to a first embodiment of the present invention is housed. The broadcast antenna 1 according to the present embodiment is received by the antenna assembly 300, the base 200 for installing the antenna assembly 300, the cover 100 that covers the antenna assembly 300 when stored, and the antenna assembly 300. And a coaxial cable 400 for transmitting broadcast radio waves to the receiver. FIG. 1 shows a state where the antenna assembly 300 is covered with the cover 100 during storage.

  The antenna assembly 300 includes a reference pole 310 installed perpendicular to the antenna mounting surface 202 (see FIG. 7) in the base 200, an FM broadcast wave band antenna 320, and a UHF broadcast wave band antenna 332. The antenna assembly 300 includes UHF broadcast waveband antennas 330, 331, and 333 in addition to the UHF broadcast waveband antenna 332 (see FIG. 5).

  When the broadcast antenna 1 shown in FIG. 1 is stored, the FM broadcast wave band antenna 320 and the UHF broadcast wave band antenna 332 are bent at the first hinge portions 320a and 332a, respectively, and folded into the cover 100 for storage. Has been. At the time of storage, the FM broadcast wave band antenna 320 is configured such that the first rod part 320b between the first hinge part 320a and the second hinge part 320c is directed upward and slightly outward. Thus, when the cover 100 is slid into the base 200, the FM broadcast wave band antenna 320 opens to the horizontal state by its own weight (see FIG. 2). The present invention is not limited to this, and the first rod portion 320b is kept perpendicular to the antenna mounting surface 202 during storage, while the second rod portion 320d closer to the tip than the second hinge portion 320c is directed upward. You may be comprised so that it may open a little outside. In addition, although the structure at the time of accommodation of the antenna 320 for FM broadcast wave bands was demonstrated, it is the same also about the antennas 332, 330, 331, and 333 for UHF broadcast wave bands.

  The reference pole 310 also serves as an AM broadcast wave band antenna in the present embodiment. The length of the reference pole 310 may be set in advance such that the reference pole 310 is lower than the height of the cover 100 when stored, or the reference pole 310 can be expanded and contracted to fit the height of the cover 100 when stored. May be shortened.

  The coaxial cable 400 transmits the broadcast radio waves received by the FM broadcast wave band antenna 320, the UHF broadcast wave band antennas 330 to 333, and the reference pole 310 (AM broadcast wave band antenna) to the corresponding receiver. . In general, the coaxial cable 400 having a characteristic impedance of 75Ω is often used, but this is not a limitation. As for the routing of the coaxial cable 400, FIG. 1 and the like are merely schematically illustrating a mode in which the coaxial cable 400 is routed downward from the antenna assembly 300 as an example, and there are various arrangements of the coaxial cable 400. Possible forms.

  FIG. 2 is a diagram showing a shape of the broadcasting antenna 1 according to the first embodiment of the present invention in a usage state (during horizontal polarization reception). In FIG. 2, the FM broadcast wave band antenna 320 and the UHF broadcast wave band antenna 332 have the first hinge portions 320a and 332a and the second hinge portions 320c and 332c released from the bent state by their own weights. Thus, the first rod portions 320b and 332b and the second rod portions 320d and 332d are maintained in a state of extending in the horizontal direction and radially (see FIG. 5). Such an antenna shape is used to receive a horizontally polarized broadcast wave.

  FIG. 3 shows an example of the configuration of the hinge portion that realizes this antenna structure. FIG. 3 is a partially enlarged view of the first hinge portion 332a constituting the broadcasting antenna 1 of the present embodiment. In the first hinge part 332a, the first rod part 332b is connected so as to be rotatable around the hinge part rotation shaft 332f. However, the rotation operation of the first rod portion 332b is limited by the two abutting surfaces 332e1 and 332e2 provided on the first hinge portion 332a. That is, as shown in FIG. 3, when the first rod portion 332b is in contact with the abutting surface 332e1, the first rod portion 332b can maintain a horizontal state as shown in FIG. On the other hand, when the first rod portion 332b is in contact with the abutting surface 332e2, the first rod portion 332b is maintained in a posture that opens upward as shown in FIG. In order to prevent the user from hitting the antenna when the antenna is opened to use, friction may be generated when the hinge rotation shaft 332f rotates to open the antenna gently. Further, by marking the cover 100 so that the position of the antenna in the circumferential direction can be recognized, the user can avoid a collision when the antenna is opened.

In FIG. 2, the length l _B of the first rod portions 320b and 332b can be set to, for example, 500 mm. When the length l _{B of} the first rod portions 320b and 332b is short, the distances between adjacent antennas are close to each other, and the reception sensitivity is lowered. On the other hand, if l _B is too long, the storage property of the broadcasting antenna 1 is impaired, and thus the length can be selected as an example of an appropriate value. Further, the lengths l _F and l _U of the second rod portions 320d and 332d can be selected according to the frequency of the radio wave received by the FM broadcast wave band antenna 320 and the UHF broadcast wave band antenna 332, respectively. it can. The frequency of the broadcast wave is 70 to 90 MHz for FM broadcast and 470 to 710 MHz for UHF broadcast, which is higher in UHF broadcast. Therefore, in this embodiment, the length l of the second rod portion 320d of the FM broadcast wave band antenna 320 is l. _F is set to be longer than the length l _U of the second rod portion 332d of the UHF broadcast wave band antenna 332. The values of the lengths l _F and l _U of the second rod portions 320d and 332d can be set to 750 mm and 500 mm, for example.

  Note that the first rod portions 320b and 332b and the second rod portions 320d and 332d as shown in FIG. 2 are both antenna-shaped extending in the horizontal direction, and the first rod portions 320b and 332b and the second rod portions 320d, When the 332d is conductive with the conductor, the antenna length for determining the reception frequency is the sum of the lengths of the first rod portions 320b and 332b and the lengths of the second rod portions 320d and 332d. As the material of the antenna, for example, a conductor such as aluminum or iron can be used.

  On the other hand, it is preferable to use, for example, hard plastic as the material of the cover 100 and the base 200. By using such a non-conductive material, it is possible to prevent the electric characteristics necessary for the broadcasting antenna 1 from being affected.

The reference pole 310 functions as an AM broadcast wave band antenna as described above. Accordingly, the length l _A of the reference pole 310 is determined based on the frequency of the AM broadcast wave to be received. When l _A in the use state is longer than the height of the cover 100, the reference pole 310 may be configured to be extendable and shortened so as to be within the height of the cover 100 when stored. The length l _A of the reference pole 310 in use can be set to 950 mm, for example. In this embodiment, the width w and the height h of the base 200 that fixes the antenna assembly 300 can be set to 200 mm and 1000 mm, respectively.

  Note that the AM broadcast wave band antenna 310 and the FM broadcast wave band antenna 320 and the UHF broadcast wave band antennas 330 to 333 may be configured to be extendable and retractable, instead of only the AM broadcast wave band antenna 310 being extendable and contractible. As a result, the antenna length can be freely adjusted according to the frequency of the broadcast radio wave desired to be received. In addition, when vertically polarized waves are received, the first rod portions 320b, 330b to 333b are configured to be extendable so that the distance between adjacent antennas can be adjusted and the reception sensitivity can be adjusted. Also good.

  Note that the description of the UHF broadcast wave band antenna 332 in the above description regarding FIG. 2 can be applied to other UHF broadcast wave band antennas 330, 331, and 333.

  FIG. 4 is a diagram showing a shape of the broadcasting antenna 1 according to the first embodiment of the present invention when in use (at the time of vertical polarization reception). The antenna shape of FIG. 4 can be realized by bending the antenna 90 degrees with the second hinge portions 320c and 332c with respect to the antenna shape of FIG. 2 for receiving horizontally polarized broadcast waves. Such an antenna shape is such that, for example, when the user has bent the antenna 90 degrees at the second hinge portions 320c and 332c, the hinge rotation shafts 320f and 332f constituting the second hinge portions 320c and 332c are fastened with screws. Thus, it can be realized by making the rotation impossible.

  When transmitting and receiving vertically polarized broadcast waves with the antenna shape of FIG. 4, the length of the first rod portions 320b and 332b does not contribute, and only the length of the second rod portions 320d and 332d contributes as an antenna. It will be.

  FIG. 5 is a plan view of the antenna having the shape of FIG. 4 as viewed from above. The FM broadcast wave band antenna 320 and the UHF broadcast wave band antennas 330 to 333 are arranged at equal angular intervals (72 degree intervals) around the pole base 311 of the reference pole 310 and extend radially from the reference pole 310. . The angle interval may be a fixed value, or may be configured so that the user can adjust the angle to an arbitrary angle according to the reception state of the broadcast wave, as will be described later.

  FIG. 6 is a diagram illustrating a connection state with the receivers 500, 510, and 520 when the antennas 310, 320, and 330 to 333 constituting the antenna assembly 300 of the broadcasting antenna 1 according to the present embodiment are in use. . The receiver 500 is a 4-diversity terrestrial digital broadcast receiver, the receiver 510 is an FM broadcast receiver, and the receiver 520 is an AM broadcast receiver.

  The reference pole (AM broadcast wave band antenna) 310 is connected to the AM broadcast receiver 520 by a coaxial cable 400 having a characteristic impedance of 75Ω. The FM broadcast wave band antenna 320 is also connected to the FM broadcast receiver 510 by the coaxial cable 400. Furthermore, UHF broadcast wave band antennas 330 to 333 are connected to 4-diversity terrestrial digital broadcast receiver 500 by coaxial cable 400. The 4-diversity terrestrial digital broadcast receiver 500 selects, for example, the antenna having the strongest received radio wave from among the four connected antennas, or combines the phases of a plurality of antennas that have received the strong radio wave. Process. With such a configuration, it is possible to improve the quality and reliability of received broadcast radio waves. Moreover, you may comprise so that the audio | voice output of said three receivers may be transmitted in a shelter by means, such as FM transmitter.

  FIG. 7 is a view showing a cross section of a base 200 for installing the antenna assembly 300 and a cover 100 that covers the antenna assembly 300 when housed, provided in the broadcasting antenna 1 of the present embodiment. The base 200 has an outer ring portion 204 having a cylindrical shape, and an antenna mounting base having an antenna mounting surface 202 that extends along the longitudinal direction of the base 200 inside the outer ring portion 204 and for installing the antenna assembly 300 on the upper portion. 201 and a clasp 600 for fixing the cover 100 to the base 200.

  A circular cable wiring hole 203 through which the coaxial cable 400 is passed is provided in the center of the antenna mounting surface 202. The antenna mounting base 201 is connected to the outer ring portion 204 at the lower end.

  The clasp 600 is fixed to the base 200 so as to be rotatable around the rotation shaft 601 in the vicinity of the upper end of the base 200. The cover 100 can be fixed to the base 200 by engaging the recess provided in the clasp 600 with the protrusion 602 provided near the lower end of the cover 100. Further, when the clasp 600 is rotated around the rotation shaft 601 to disengage the protrusion 602, the cover 100 is placed in the groove 205 formed between the outer ring portion 204 of the base 200 and the antenna mounting base 201. It is possible to slide and move. Note that the clasp 600 and the protrusions 602 can be provided, for example, at four locations at intervals of 90 degrees in the circumferential direction.

  FIG. 8 is a diagram illustrating a connection state between the reference pole 310 of the broadcast antenna 1 according to the first embodiment of the present invention, the FM broadcast waveband antenna 320, and the UHF broadcast waveband antenna 332. The pole base 311 of the reference pole 310 is provided with movable rings 340 to 344 for fixing the antennas 320 and 330 to 333. The movable rings 340 to 344 are configured such that each ring can rotate independently around the central axis of the reference pole 310.

  In FIG. 8, FM broadcast wave band antenna 320 and UHF broadcast wave band antenna 332 are fixed to movable rings 340 and 341, respectively. Further, UHF broadcast wave band antennas 330, 333, and 331, which are not shown in FIG. 8, are also fixed to the movable rings 342, 343, and 344, respectively. With these configurations, the FM broadcast wave band antenna 320 and the UHF broadcast wave band antennas 330 to 333 can be independently rotated around the central axis of the reference pole 310. As a result, it is possible to easily adjust the antenna position so that the state of the received radio wave is optimal. In order to reduce the twisting load applied to the coaxial cable 400 when adjusting the position of the antenna in the rotational direction, an axis is provided near the central axis of the base 200, and the coaxial cable is spirally formed on the axis. It is good also as a structure wound.

  In the present embodiment, a total of five FM broadcast wave band antennas 320 and UHF broadcast wave band antennas 330 to 333 can be independently adjusted. However, the present invention is not limited to this mode. For example, the FM broadcast wave band antenna 320 and the UHF broadcast wave band antenna 332 are fixed, and only the remaining UHF broadcast wave band antennas 330, 331, and 333 can be adjusted around the center axis of the reference pole 310. It may be configured. Further, the antenna may be configured to be adjustable not only around the central axis but also in a direction along the central axis.

  As described above, according to the present embodiment, the UHF broadcast wave band antennas 330 to 333 have the first hinge portions 330 a to 333 a that can be bent at the connecting portion with the reference pole 310, and the cover 100 is the base 200. The first hinge portions 330 a to 333 a are released from the bent state by the weight of each antenna by sliding inward, and each antenna extends horizontally and radially from the side surface of the reference pole 310. Thereby, a plurality of antennas are integrated, and the broadcasting antenna 1 can be easily installed even with a small number of people.

  Further, according to the present embodiment, by installing the FM broadcast waveband antenna 320 in addition to the UHF broadcast waveband antennas 330 to 333, it is possible to view both television broadcasts and radio broadcasts. .

  In addition, according to the present embodiment, the UHF broadcast waveband antennas 330 to 333 and the FM broadcast waveband antennas 320 are arranged at equal intervals on the circumference, and thus a plurality of UHF broadcast waveband antennas 330 to 330 are arranged. A diversity antenna using 333 can be configured.

  Further, according to the present embodiment, it is possible to receive more radio broadcasts by using the reference pole 310 also as an AM broadcast wave band antenna.

  Further, according to the present embodiment, the second rod portions 320d, 330d to 333d can be adjusted horizontally or vertically, so that in addition to the horizontally polarized broadcast radio wave, the vertically polarized broadcast radio wave can be received. It becomes.

  In addition, according to the present embodiment, the UHF broadcast waveband antennas 330 to 333 and the FM broadcast waveband antenna 320 can be adjusted in the circumferential direction, so that flexible adjustment according to the reception state of the broadcast radio waves is possible. It becomes possible.

  Further, according to the present embodiment, the UHF broadcast waveband antennas 330 to 333 and the FM broadcast waveband antenna 320 can be independently adjusted in the circumferential direction, so that the flexibility according to the reception state of the diversity antenna Adjustment is possible.

  Moreover, according to this embodiment, since the cover 100 can be slid with respect to the base 200, the storage property of the broadcasting antenna 1 can be further improved.

(Second Embodiment)
FIG. 9 is a plan view showing a state when the broadcasting antenna 2 according to the second embodiment of the present invention is in use (during vertical polarization reception). The FM broadcast wave band antenna 320 and the UHF broadcast wave band antennas 331, 332, and 333 are arranged at equal angular intervals (90-degree intervals) around the pole base 311 of the reference pole 310. Further, in this embodiment, the FM broadcast wave band antenna 320 is configured to also serve as the UHF broadcast wave band antenna 330. Therefore, the length of the FM broadcast wave band antenna 320 can be set to a length between the optimum length for receiving FM broadcasts and the optimum length for receiving UHF broadcasts. Also, the optimum length for receiving FM broadcasts may be selected, or conversely, the optimum length for receiving UHF broadcasts may be set. This angular interval may be a fixed value, or may be configured so that the user can adjust it to an arbitrary angle according to the reception state of the broadcast wave. In this embodiment, the reference pole 310 may also be configured to serve as an AM broadcast wave band antenna.

  As described above, according to the present embodiment, the FM broadcast waveband antenna and the UHF broadcast waveband antenna are configured by the four antennas 320, 331 to 333, one of which is the FM broadcast waveband antenna 320. And UHF broadcast wave band antenna 330 can be used. With this configuration, the broadcasting antenna 2 has a simpler configuration and excellent storage properties, and the UHF broadcasting wave band antennas 330 to 333 are arranged symmetrically with respect to the reference pole 310, so that a more ideal UHF is achieved. A diversity antenna for a broadcast wave band can be configured.

  In addition, although the said embodiment considered connecting to the existing FM broadcast receiver 510 and the 4-diversity terrestrial digital broadcast receiver 500, about the number of each antenna and the presence or absence of combined use, various modifications are possible. Can be adopted. For example, the number of FM broadcast wave band antennas is not limited to one, and an arbitrary number of two or more can be provided. Also, the number of UHF broadcast wave band antennas is not limited to four, and any other number can be provided. In addition, the number of antennas used for both FM broadcasting and UHF broadcasting may also be configured so that two or more antennas are used together.

  Although the present invention has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various changes or modifications based on the present disclosure. Therefore, it should be noted that these variations or modifications are included in the scope of the present invention. For example, the functions included in each member can be rearranged so as not to be logically contradictory, and these can be combined into one or divided.

1, 2 Broadcast antenna 100 Cover 200 Base 201 Antenna mounting base 202 Antenna mounting surface (installation surface)
203 Cable wiring hole 204 Outer ring portion 205 Groove portion 300 Antenna assembly 310 Reference pole (AM broadcast wave band antenna)
311 Pole base 320 FM broadcast wave band antenna 330, 331, 332, 333 UHF broadcast wave band antenna 320a, 330a, 331a, 332a, 333a First hinge part 320b, 330b, 331b, 332b, 333b First rod part 320c , 330c, 331c, 332c, 333c Second hinge part 320d, 330d, 331d, 332d, 333d Second rod part 332e1, 332e2 Abutting surface 320f, 332f Hinge part rotation shaft 340, 341, 342, 343, 344 Movable ring 400 Coaxial cable 500 4 Diversity terrestrial digital broadcast receiver 510 FM broadcast receiver 520 AM broadcast receiver 600 Clasp 601 Rotating shaft 602 Protrusion

Claims (8)

A reference pole fixed perpendicular to the installation surface;
A plurality of UHF broadcast wave band antennas connected to the side surface of the reference pole;
Each antenna of the plurality of UHF broadcast wave band antennas has a first hinge portion that can be bent at a connection portion with the reference pole, and the first hinge portion is bent by its own weight in an unconstrained state. A broadcasting antenna characterized by extending horizontally from a side surface of the reference pole by being released from the state.   The broadcasting antenna according to claim 1, further comprising at least one FM broadcasting wave band antenna coupled to a side surface of the reference pole.   The broadcasting antenna according to claim 2, wherein at least one of the FM broadcasting wave band antennas also serves as a UHF broadcasting wave band antenna.   4. The broadcasting antenna according to claim 2, wherein the plurality of UHF broadcasting wave band antennas and the FM broadcasting wave band antennas are arranged at equal intervals on the circumference on a side surface of the reference pole. 5.   The broadcast antenna according to claim 1, wherein the reference pole is an AM broadcast wave band antenna.   Each of the antennas further includes a second hinge portion, and the angle of the antenna line on the tip side of the second hinge portion can be adjusted horizontally or vertically according to the polarization plane of the received radio wave. The broadcasting antenna according to any one of the above.   The reference pole further includes at least one ring that can be rotated around a center axis of the reference pole, or can be translated along the center axis, and the plurality of UHF broadcast wave band antennas are interposed via the ring. The broadcasting antenna according to claim 1, wherein the broadcasting antenna is connected to the reference pole. A base including the installation surface;
A hollow cover that covers the reference pole and a plurality of UHF broadcast wave band antennas from the side;
The cover can be stored in the base by sliding in the longitudinal direction of the reference pole with respect to the base,
The broadcasting antenna according to any one of claims 1 to 7, wherein each of the antennas is brought into the unconstrained state by sliding the cover in the base direction.

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