JP2013044173A - Down-pipe with antenna - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a down-pipe with antenna in which the antenna performance is hardly adversely affected by the rainwater flowing therethrough.SOLUTION: A down-pipe with antenna includes a cylindrical gutter body 3 having a slot antenna 2 with a slot 21 positioned in a part of a side wall 32 thereof in a circumferential direction, and rainwater deviating means 11 provided in the gutter body 3 for causing rainwater to deviatedly flow to the opposite side of a side where the slot 21 is positioned in the gutter body 3.

Description

  The present invention relates to a bag with an antenna.

  Conventionally, a structure in which an antenna is attached to a gutter piped along an outer wall or the like of a building is known (see, for example, Patent Document 1). The antenna attached to this ridge is attached to the side wall of the ridge having a channel inside so as to be sandwiched from the outside.

  By the way, since the flow path is formed inside, the bag is formed in a cylindrical shape. Normally, rainwater flows down along the side wall of the kite while spreading outward in the kite when circulating inside the kite. At this time, since rainwater flows down along the side wall of the kite, when the flow rate increases, a layer of water is formed over substantially the entire length of the inner surface of the side wall of the kite.

Japanese Patent Laid-Open No. 01-168101

  However, when a water layer is formed over the entire length of the inner surface in the circumferential direction in the bag with the antenna as described above, the water layer may adversely affect the antenna performance.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bag with an antenna that is not easily adversely affected by antenna performance due to rainwater flowing therethrough.

  The housing with an antenna of the present invention has a housing that has a cylindrical shape and has a slot antenna in which a slot is located in a part of the side wall in the circumferential direction, and the slot that is provided in the housing and in which the slot is located. It is characterized by having rainwater offset means for offsetting and flowing rainwater on the opposite side.

Further, in the tub with an antenna, the rainwater displacing means has a water collecting portion for collecting rainwater on a side opposite to the side where the slot is located in the casing, and a diameter smaller than that of the casing. It is preferable to include an inner cylinder body that is offset from the side where the slot is located in the housing.

  Moreover, in this ridge with an antenna, it is preferable that the rain water displacing means includes a water collecting portion for flowing down the rain water along the side wall of the pod opposite to the side where the slot is located.

  According to the bag with an antenna of the present invention, it is possible to make the antenna performance difficult to be adversely affected by rainwater flowing inside.

It is the perspective view which abbreviate | omitted the outer cylinder part and slot antenna of the collar with an antenna of Embodiment 1, and showed the side wall of the housing with the imaginary line. FIG. 3 is a partially broken perspective view of the bag with an antenna according to the first embodiment. FIG. 3 is a perspective view of the slot antenna according to the first embodiment. FIG. 3 is a perspective view of the slot antenna according to the first embodiment. It is a horizontal sectional view of the housing of Embodiment 1. It is a horizontal sectional view of the housing of the modification of Embodiment 1. It is a schematic side view of the state which attached the collar with an antenna of Embodiment 1. It is the perspective view which abbreviate | omitted the outer cylinder body and antenna of the collar with an antenna of Embodiment 2, and showed the chassis and the upper connection part with the imaginary line. It is a sectional side view of the bag with an antenna of Embodiment 2. It is a horizontal sectional view of a bag with an antenna of Embodiment 2. It is a sectional side view of the water collection part of Embodiment 3. It is a perspective view of the water collection part of Embodiment 3. (A) is a schematic sectional side view of the water collection part vicinity of Embodiment 4, (b) is a reference figure.

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

  As shown in FIG. 7, the cage with an antenna according to Embodiment 1 is attached to the removed part of the cage arranged along the outer wall of the building. is there. In the following, the upstream side ridge after cutting away a part of the heel is referred to as “upstream side heel 11”, and the downstream side of the heel after removing a part of the heel. It is referred to as “downstream ridge 12”.

  The antenna-attached bag is used as an antenna for a television by being connected to the television cable 13, for example. As shown in FIG. 1, the bag with an antenna according to the present embodiment has a frame 3 having a slot antenna 2 on its side wall 32 and a partition for flowing rainwater to a part of a horizontal section in the frame 3. 31. Moreover, the basket with an antenna of the present embodiment further includes a water collecting body 4 that collects rainwater into the flow passage formed by the partition 31. In the bag with an antenna according to the present embodiment, the partition 31 and the water collecting portion 4 constitute the rainwater diverting means 1 for flowing rainwater to the side wall 32 of the housing 3 opposite to the side where the slot 21 is located. Is done.

  The slot antenna 2 is provided on the side wall 32 of the housing 3. The slot antenna 2 is attached to the side wall 32 of the housing 3 by being laminated or embedded in the thickness of the side wall 32. As shown in FIG. 2, the slot antenna 2 of the present embodiment is overlapped on the side wall 32 of the housing 3 along the side wall 32 of the housing 3 and is fixed by the mounting member 14. The slot antenna 2 is composed of a conductive metal plate material 20 (including a metal foil). As shown in FIG. 3, the longitudinal rectangular metal plate material 20 has a C-shaped short side direction. It is formed by curving uniformly in the long side direction.

  The slot antenna 2 is formed with a plurality of slots 21 in the vertical direction (two locations in this embodiment). In the slot antenna 2, adjacent slots 21 are connected by a slit-like narrow groove 22. In the slot antenna 2, each slot 21 is located in a part of the circumferential direction. Each slot 21 is configured by an opening penetrating in the thickness direction of the metal plate member 20, and is formed in a bow tie shape in which the vertices of a pair of triangles face each other. Each slot 21 has a power feeding portion 23 at a substantially central portion in the vertical direction. The power feeding unit 23 of the present embodiment is configured by the apex portions of the triangular pieces 24 facing in the circumferential direction.

  A coaxial cable (not shown) is electrically connected to the power feeding unit 23. The coaxial cable has a central line connected to one triangular piece 24 and an outer mesh line connected to the other triangular piece 24. The coaxial cable serves as a transmission path for sending the radio wave received by the slot antenna 2 to the indoor television or the like.

  The slot antenna 2 of the present embodiment includes a first receiving unit 25 that receives radio waves in a first frequency band (for example, 473 to 600 MHz), and a first receiver that receives radio waves in a second frequency band (for example, 600 to 720 MHz). And a second receiving unit 26.

  The first receiving unit 25 includes a slot 21 and an opening peripheral edge of the slot 21. The second receiving unit 26 is configured by a metal plate 20 that is continuous in the circumferential direction adjacent to the slot 21 in the up-down direction.

  The length in the vertical direction of the slot 21 constituting the first receiving unit 25 is determined according to the length of the electrical half wavelength of the radio wave in the first frequency band. The circumferential length of the second receiving unit 26 is determined according to the length of the electrical half wavelength of the radio wave in the second frequency band.

  As shown in FIG. 4, the slot antenna 2 is formed with a gap 27 across the entire length in the vertical direction between both ends in the circumferential direction. The gap 27 is provided at a position facing the slot 21, that is, formed so as to be at a position opposite to the slot 21 across the arc center of the slot antenna 2.

  Further, the slot antenna 2 has a cutout portion 28 formed at the back of the slot 21. The punched portion 28 is a portion where the metal plate material 20 does not exist, and is provided at a position overlapping the slot 21 when viewed from the front. The punched portion 28 is formed such that the vertical length is longer than the vertical length of the slot 21 and the circumferential length is longer than the circumferential length of the slot 21.

  As shown in FIG. 2, the slot antenna 2 having such a configuration is attached such that the back surface that is curved and faces inward is in contact with the outer surface of the side wall 32 of the housing 3. As a result, the slot antenna 2 is arranged such that the slot 21 is located at a part of the side wall of the housing 3 in the circumferential direction. In this state, the slot antenna 2 is fixed by the mounting member 14.

  The casing 3 has a cylindrical shape and is formed of a nonconductive synthetic resin material. The casing 3 of the present embodiment is configured by a cylindrical round rod. The housing 3 includes an upper opening (not shown) that opens upward, a lower opening (not shown) that opens downward, and a communication path 34 (see FIG. 5) that communicates the upper opening and the lower opening. ing. The communication path 34 is provided with a partition 31 for allowing rainwater to flow only in a part of the horizontal cross section of the communication path 34.

  As shown in FIG. 5, the partition 31 partitions the communication path 34 of the housing 3 into a plurality of regions. The partition 31 includes a first region 35 located immediately inside the slot 21 of the slot antenna 2 and a second region 36 located away from the slot 21 of the slot antenna 2 in the horizontal section of the housing 3. Next, the inside of the housing 3 is partitioned. The second region 36 constitutes a flow passage that communicates the upstream ridge 11 and the downstream ridge 12, and circulates rainwater from the upstream ridge 11 to the downstream ridge 12. Let

  The partition 31 of the present embodiment has a first partition part 310 and a second partition part 311 and is formed in an L-shaped cross section. Moreover, the partition 31 is provided over substantially the full length of the longitudinal direction of the housing 3, as FIG. 1 shows. As shown in FIG. 5, the partition 31 of this embodiment is connected to the inner surface of the side wall 32 of the housing 3 and is integrally formed with the housing 3 by, for example, extrusion molding. The partition 31 of the present embodiment is not arranged symmetrically with respect to the straight line AA passing through the front surface of the slot antenna 2 (the center in the circumferential direction of the slot 21) and the center of the housing 3. The partition 31 according to the present embodiment is arranged so as to be symmetric with respect to a straight line BB passing through the position shifted from the front surface of the slot antenna 2 toward the circumferential narrow groove 22 and the center of the housing 3.

  Therefore, the partition 31 is not provided with the narrow groove 22 in the case of the slot antenna 29 in which only the single slot 21 is provided. Therefore, as shown in FIG. It arrange | positions symmetrically with respect to the straight line AA passing through the center.

The partition 31 is provided so that the cross-sectional area of the second region 36 is substantially the same as or larger than the cross-sectional area of the flow path of the upstream side ridge 11. In general, a general soot has an outer diameter of 45 mm (inner diameter is 42.7 mm), and thus the cross-sectional area of the flow path is about 1432 mm ² . Therefore, the partition 31 is provided at a position shifted by −10 mm in the X-axis direction and −10 mm in the Y-axis direction when the center of the housing 3 (inner diameter φ80 mm) is positioned at the origin of the XY coordinates. Thereby, the second region 36 at the upper right in FIG. 5 partitioned by the partition 31 is formed to have a cross-sectional area of about 2148 mm ² and larger than the cross-sectional area of the flange 11. Note that the partition 31 of this embodiment is translated so that the apex portion of the partition 31 is positioned on a straight line BB passing through the position shifted from the front of the slot antenna 2 toward the narrow groove 22 and the center of the housing 3. Thus, the arrangement location is determined.

  The partition 31 of the present embodiment forms the first region 35 so as to face the inner surface of the side wall 32 immediately inside the slot 21 of the slot antenna 2, and the second region 36 on the side opposite to the slot 21. It forms so that it may face the inner surface of the side wall 32 just inside the clearance gap 27 formed in this.

  As shown in FIG. 1, the kite with an antenna of the present embodiment has a water collecting body 4 that receives rainwater flowing out from the kite 11 on the upstream side. The water collecting body 4 is a member that receives rainwater flowing out from the upstream raft 11 and collects water toward the second region 36 in the raft 3. The water collecting body 4 has a water collecting portion 41 that is communicated in the vertical direction and has a cross-sectional area that decreases toward the lower side, and a lower edge portion that protrudes downward from the opening peripheral edge of the lower end of the water collecting portion 41. 42. In the water collecting body 4, the water collecting portion 41 and the lower edge portion 42 are integrally formed by injection molding, cast molding, or the like.

  The water collection part 41 is formed so that the inner diameter of the opening on the inflow side is larger than the outer diameter of the upstream side ridge 11, and is thereby fitted on the lower end of the upstream side ridge 11. The lower edge portion 42 is sized to be fitted into the opening at the upper end of the second region 36 of the housing 3, and is thereby fitted into the opening at the upper end of the second region 36.

  The rod with an antenna according to the present embodiment includes an outer cylinder portion 9 provided concentrically with the rod body 3 so as to cover the outside of the rod body 3. In addition, the antenna-equipped saddle of the present embodiment is provided at the upper end of the outer cylinder portion 9 and connected to the upstream-side flange 11, and at the lower end of the outer cylinder portion 9 and provided at the downstream side. A lower connection portion 7 connected to the flange 12 is further provided.

  The outer cylinder portion 9 has a cylindrical shape having an axial direction in the vertical direction, and is made of a non-conductive synthetic resin material. The outer cylinder portion 9 has an inner diameter that is larger than the outer diameter of the housing 3 and is configured to cover the outer surfaces of the housing 3 and the slot antenna 2.

  The upper connecting portion 6 positions the upper end of the outer cylinder portion 9 and the upper end of the housing 3 with respect to each other, thereby holding both. The upper connection portion 6 includes an upper through hole 61 that penetrates in the vertical direction. The inner diameter of the upper through-hole 61 is formed larger than the outer diameter of the upstream flange 11, and the upstream flange 11 is configured to be inserted with play. The upper collector 6 has a water collecting body 4 disposed therein. In the upper connection portion 6, the upper through hole 61 is connected in communication with the water collector 4.

  Moreover, the upper connection part 6 is provided with the connection tool 62 electrically connected to the coaxial cable connected to the slot antenna 2, as FIG. 2 shows. The connection tool 62 is provided so as to be exposed from the upper connection portion 6. The connector 62 is used to electrically connect a signal received by the slot antenna 2 to the television cable 13 via a coaxial cable.

  The lower connection part 7 positions the lower end of the outer cylinder part 9 and the lower end of the housing 3 with respect to each other, thereby holding both. The lower connecting portion 7 has a lower through hole 71 formed in the central portion thereof that penetrates in the vertical direction and has a smaller diameter than the flange 12 on the downstream side. The lower connecting portion 7 is configured to be placed on the upper end of the flange 12 on the downstream side. Thereby, the rod with an antenna is supported on the upper end of the rod 12 on the downstream side.

  As shown in FIG. 7, the cage with an antenna of the present embodiment having the above-described configuration is installed as a part of the cage installed along the outer wall of the building.

  The eaves installed along the outer wall are connected in communication with a water collector 16 of the eaves eaves 15 through a first elbow 17 and a second elbow 19 communicated via a call 18. A part of the scissors is excised and separated into a scissor 11 on the upstream side and a scissor 12 on the downstream side. In the bag with an antenna of the present embodiment, the upper connection portion 6 is connected to the lower end of the upstream eave rod 15 and the lower connection portion 7 is connected to the upper end of the downstream rod 12. Note that ends of the upstream side hook 11 and the downstream side hook 12 are fixed to the outer wall by a retainer 80. In addition, the bag with an antenna according to the present embodiment is fixed by a retainer 81 formed of a nonconductive resin. In this way, the cage with an antenna after installation constitutes a part of the cage installed along the outer wall of the building.

  In order to install the rod with an antenna according to the present embodiment, the installer inserts the lower end of the upstream rod 11 into the upper through hole 61 of the upper connection portion 6 and then moves the lower connection portion 7 to the downstream side. It is placed on the upper end of the ridge 12. Thereafter, the rod with the antenna is rotated around the central axis of the housing 3 so that the slot antenna 2 is arranged in the direction in which the broadcast radio wave can be received most strongly. In this state, the antenna-attached bag is fixed by the holder 81.

  It should be noted that the cage with an antenna according to the present embodiment is not limited to a case where a cage is newly provided along the wall surface of the building, but the cage with an antenna can be easily attached to an already installed cage. Can be installed.

  In such a structure, when rainwater circulates in the upstream raft 11, the rainwater passes through the upper through hole 61 of the upper connection portion 6 and flows down to the water collecting body 4, and is then partitioned in the raft 3. The second area 36 is distributed. Next, the rainwater flows down in the second region 36, passes through the lower through hole 71 of the lower connection portion 7, and flows into the downstream raft 12.

  At this time, since rainwater does not flow in the first region 35 in the housing 3 located immediately inside the slot 21 of the slot antenna 2, the inner surface of the side wall 32 immediately inside the slot 21 of the slot antenna 2 No water layer is formed. The bag with an antenna according to the present embodiment is configured so that the rainwater is shifted to the position away from the slot 21 by the rainwater deflecting means 1 and flows into the interior as a kite. In addition, adverse effects on antenna performance can be reduced.

  By the way, in Embodiment 1, when the partition 31 is not provided in the housing 3, the rain water which distribute | circulates the inside of the said housing 3 flows down along the inner surface of the side wall 32 of the housing 3. FIG. In particular, when the housing 3 is round as in this embodiment, the rainwater passes through the water collector 16 connected to the eaves 15 and travels spirally along the inner surface of the side wall 32 of the housing 3. run down. For this reason, when the flow rate of rainwater is large, a layer of water is formed over substantially the entire inner surface of the side wall 32 regardless of whether the housing 3 is round or square. This water layer covers the slot 21 of the slot antenna 2 from the inside of the housing 3.

  Here, the slot antenna 2 of the present embodiment receives radio waves due to the presence of the slots 21. Specifically, the slot antenna 2 receives radio waves using the opening penetrating the metal plate 20 and the peripheral edge of the opening. . The relative dielectric constant of air is about 1, whereas the relative dielectric constant of water is about 80. For this reason, if the slot 21 is covered with a rainwater layer, the gain as the reception performance is attenuated even though the slot 32 is interposed through the side wall 32.

  In this respect, since the rod with an antenna of the present embodiment has the rainwater offsetting means 1, rainwater does not flow down to the inner surface of the side wall 32 of the frame 3 located just inside the slot 21. Can be. Thereby, the bad influence on antenna performance can be prevented as much as possible, ensuring the drainage property of the rainwater which circulated through the inside of the housing 3.

  Moreover, in the kite with an antenna according to this embodiment, the cross-sectional area of the second region 36 partitioned by the partition 31 and through which rainwater flows is substantially the same as or larger than the cross-sectional area of the kite 11 on the upstream side. It is formed as follows. For this reason, even if the raft with an antenna of this embodiment has a structure in which rainwater circulates only in a part of the enclosure 3, it prevents the drainage performance of rainwater flowing down from the raft 11 on the upstream side from deteriorating. be able to.

  Moreover, since the partition with the antenna 31 of this embodiment is provided with the partition 31 covering substantially the entire length in the longitudinal direction of the housing 3, rainwater is supplied to the slot of the slot antenna 2 over the entire length in the longitudinal direction. It can be made to flow away from the side where 21 is located.

  Next, Embodiment 2 is demonstrated based on FIGS. In addition, since this embodiment is the same as Embodiment 1 for the most part, the same code | symbol is attached | subjected in the same part, description is abbreviate | omitted, and a different part is mainly demonstrated.

  Similar to the first embodiment, the basket with an antenna according to the second embodiment has a cylindrical casing 3 having the slot antenna 2 on the side wall 32, and a part of the casing 3 provided in the casing 3. Rainwater offset means 1 for offsetting rainwater to flow. In the bag with an antenna of the second embodiment, the structure of the partition 31 and the structure of the water collecting body 44 are different from those of the first embodiment, and the other structures are the same.

  The rainwater offsetting means 1 according to the present embodiment includes an inner cylindrical body 37 and a water collecting body 44 arranged in the housing 3. The inner cylinder 37 is formed in an elliptical cross section and is formed over substantially the entire length of the casing 3 in the longitudinal direction. The inner cylinder 37 is formed in a cylindrical shape that opens in the vertical direction, and has a flow passage through which rainwater flows. As shown in FIG. 9, the upper opening of the inner cylinder 37 communicates with the upper through hole 61 of the upper connection portion 6, and the lower opening communicates with the lower through hole 71 of the lower connection portion 7.

  As shown in FIG. 10, the inner cylinder 37 is provided in the housing 3 so as to be offset toward the side opposite to the side where the slot 21 of the slot antenna 2 is located. Specifically, the long axis of the inner cylinder 37 and the side wall of the inner cylinder 37 are formed on the side wall 32 of the housing 3 located opposite to the front surface of the slot antenna 2 (the center C in the circumferential direction of the slot 21). The inner cylindrical body 37 is arranged so that the intersection portion is in contact with or close to the intersection. As shown in FIGS. 8 and 9, the inner cylinder 37 has an upper end fixed to the upper connection portion 6 via the water collecting body 4 and a lower end fixed to the lower connection portion 7.

The inner cylinder 37 is provided so that the cross-sectional area of the flow passage is substantially the same as or larger than the cross-sectional area of the flow path of the upstream flange 11. In general, a general soot has an outer diameter of 45 mm (inner diameter is 42.7 mm), and thus the cross-sectional area of the flow path is about 1432 mm ² . Therefore, the inner cylinder body 37 of the present embodiment is formed so that the inner dimension in the major axis direction is 54.4 mm, the inner dimension in the minor axis direction is 30 mm, and the cross-sectional area of the flow passage is formed to be 1438 mm ² . Thereby, in this embodiment, it is formed so that the cross-sectional area of the flow path of the inner cylindrical body 37 is substantially the same as the cross-sectional area of the flow path of the upstream flange 11.

  Similar to the first embodiment, the water collection body 44 of the present embodiment is a member that receives rainwater that has flowed out from the upstream raft 11 and collects the rainwater toward the inner cylinder 37. The water collecting body 4 includes a water collecting portion 45 that is communicated in the vertical direction and has a cross-sectional area that decreases toward the lower side, and a lower edge portion that protrudes downward from the opening peripheral edge of the lower end of the water collecting portion 45. 46. In the water collecting body 44, a water collecting portion 45 and a lower edge portion 46 are integrally formed by injection molding, cast molding or the like.

  The water collecting part 45 collects rainwater on the side wall 32 on the side opposite to the side where the slot 21 of the housing 3 is located. The water collecting portion 45 is formed such that the inner diameter of the opening on the inflow side is larger than the outer diameter of the upstream side ridge 11, and is thereby fitted on the lower end of the upstream side ridge 11. The lower edge portion 46 is shaped to be fitted into the opening at the upper end of the inner cylinder 37, and is thereby fitted into the opening at the upper end of the inner cylinder 37.

  In the bag with an antenna having such a configuration, the inner cylindrical body 37 through which rainwater flows down is disposed at a position away from the slot 21 of the slot antenna 2. In other words, the inside of the housing 3 is divided into a first region 35 where rainwater does not flow and a second region 36 serving as a flow passage by the inner cylinder 37 serving as the partition 31, and the first region 35. Is interposed between the slot 21 of the slot antenna 2 and the second region 36. For this reason, the rainwater flowing down can be separated from the slot 21 of the slot antenna 2 by a certain distance or more.

  Thereby, the bad influence on the antenna performance resulting from rainwater drainage can be reduced. Moreover, since the horizontal cross section of the inner cylinder 37 is formed in an elliptical shape and the cross sectional area thereof is substantially the same as or larger than the cross sectional area of the upstream flange 11, the drainage performance is improved. It can be secured sufficiently. That is, the antenna-equipped bag according to this embodiment can prevent the antenna performance from being adversely affected while ensuring the drainage performance, as in the first embodiment.

  Next, Embodiment 3 will be described with reference to FIGS. In addition, since this embodiment is the same as Embodiment 1 for the most part, the same code | symbol is attached | subjected in the same part, description is abbreviate | omitted, and a different part is mainly demonstrated.

  Similar to the first embodiment, the cage with an antenna according to the third embodiment has a cylindrical housing 3 having the slot antenna 2 on the side wall 32 and a part of the housing 3 provided in the housing 3. Rainwater offset means 1 for offsetting rainwater to flow. The basket with an antenna according to the third embodiment is different from that according to the first embodiment in the water collecting body 54 constituting the rainwater offsetting means 1, and the other structures are the same.

  As shown in FIG. 11, the water collecting body 54 of the present embodiment includes a water collecting portion 55 that is formed so as to communicate in the vertical direction and have a cross-sectional area that decreases toward the bottom, and an opening peripheral edge at the lower end of the water collecting portion 55. And a lower edge portion 56 projecting downward from the bottom. The water collecting portion 55 of the present embodiment is provided with a stepped portion 58 for collecting rainwater on the side opposite to the side where the slot 21 of the slot antenna 2 is located.

  The step portion 58 is provided on the side wall of the water collection portion 55 of the water collection body 54. The stepped portion 58 has a flowing water surface 580 that allows rainwater to flow down. The stepped portion 58 is continuously provided from the upper end to the lower end thereof, and is inclined so as to be located on the side opposite to the slot 21 of the slot antenna 2 toward the lower side. The stepped portion 58 allows rainwater flowing down along the side wall of the water collecting portion 55 to flow down on the flowing water surface 580 toward the side wall 32 of the housing 3 opposite to the slot 21 of the slot antenna 2. Let it flow down.

  In the rod with an antenna according to the present embodiment, the lower edge portion 56 of the water collecting body 54 is connected in communication with the opening above the second region 36 formed by the partition 31 in the housing 3. Thereby, not only can rainwater flowing down the stepped portion 58 flow into the second region 36 in the housing 3, but also the side wall 32 on the opposite side of the slot 21 in the second region 36 is transmitted. Rainwater can flow down.

  As described above, the rod with antenna of the present embodiment has the stepped portion 58 that causes the rain water to flow down on the side wall 32 of the rod body 3 on the side opposite to the slot 21 of the slot antenna 2 in the water collecting body 54. Rainwater can flow down to a position away from the slot 21. Thereby, the bad influence on the antenna performance resulting from rainwater drainage can be reduced.

  In addition, the water collection body 54 of this embodiment is applicable also with respect to the inner cylinder 37 of Embodiment 2. FIG.

  Moreover, although the water collection body 54 of this embodiment collected water toward the 2nd area | region, it can also be applied with respect to the housing 3 in which the partition 31 is not provided. In this case, the water collection body 54 is attached to the upper end of the cylindrical housing 3. The water collecting body 54 is configured to allow rainwater to flow down to the side wall 32 of the housing 3 on the side opposite to the side where the slot 21 is located.

  According to such a configuration, rainwater can flow down along the side wall 32 of the housing 3 on the side opposite to the slot 21, and rainwater can be further separated from the slot. Moreover, the inner cylinder 37 can be omitted, and the cost can be reduced. In this case, the water collecting body 54 constitutes the rainwater offsetting means 1.

  Next, Embodiment 4 will be described with reference to FIG. Since the present embodiment is mostly the same as the second embodiment, the same portions are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.

  As in the second embodiment, the basket with an antenna according to the fourth embodiment has a cylindrical casing 3 having the slot antenna 2 on the side wall 32 and a part of the casing 3 provided in the casing 3. Rainwater offset means 1 for offsetting rainwater to flow. In the bag with an antenna of the fourth embodiment, the mounting position of the water collecting body 44 is different from that of the second embodiment, and the other structures are the same.

  The water collecting body 44 of the present embodiment has the same structure as that of the second embodiment. In the water collecting body 44 of the present embodiment, the water collecting portion 45 is provided above the slot antenna 2. That is, the water collecting body 44 is disposed so that the lower end of the water collecting portion 45 is located at substantially the same position as or higher than the upper end of the slot antenna 2. Note that a double hatched portion in FIG. 13 indicates a region where the slot antenna 2 exists.

  Here, the water collecting portion 44 is formed to have a larger diameter than the inner cylindrical body 37 and has a larger diameter toward the upper side, and has an outer diameter that is substantially the same as that of the housing 11. For this reason, as shown in FIG. 13 (b), if the water collecting part 44 is simply disposed at the upper end part of the housing 3, the rain water flowing down the water collecting part 44 will be close to the upper end of the antenna. Is also possible.

  In this regard, the rod with an antenna of the present embodiment has a structure in which the water collecting portion 44 is located above the slot antenna 2 and does not overlap the slot antenna 2 when viewed from the side. It can prevent that the upper end part of this and rain water adjoin. Thereby, according to the bag with an antenna of this embodiment, rainwater and the slot antenna 2 can be reliably separated from each other by a certain distance, and the antenna performance can be prevented from being adversely affected.

  In addition, the point which arrange | positions the part which the diameter of the water collection body 44 became large like this embodiment so that it may not overlap with an antenna can be applied to any of the cage | baskets with an antenna of Embodiment 1-3. is there.

  As described above, the bag with an antenna of the present invention has been described based on the first to fourth embodiments. Although the outer cylinder part 9, the upper connection part 6, and the lower connection part 7 were provided in the cage | basket with an antenna of Embodiment 1-4, in the cage | basket with an antenna of this invention, the outer cylinder part 9 and an upper connection are provided. The part 6 and the lower connection part 7 may not be provided.

11 Upstream side 12 Downstream side 2 Slot antenna 20 Metal plate material 21 Slot 22 Narrow groove 25 First receiving part 26 Second receiving part 3 Housing 31 Partition 32 Side wall 35 First region 36 Second 4 Water collecting part 6 Upper connecting part 61 Upper through hole 7 Lower connecting part 71 Lower through hole 9 Outer cylinder part

Claims (3)

A casing having a slot antenna having a cylindrical shape and a slot located in a part of the side wall in the circumferential direction;
A raindrop with an antenna, characterized in that it is provided with rainwater offsetting means for offsetting and flowing rainwater on a side of the chassis opposite to the side where the slot is located. The rainwater offset means is
A water collecting portion for collecting rainwater on the opposite side of the housing from the side where the slot is located;
2. The rod with an antenna according to claim 1, further comprising an inner cylinder that is smaller in diameter than the rod and is provided on a side opposite to a side where the slot is located in the rod. . The rainwater draining means includes a water collecting section for flowing rainwater along the side wall of the housing opposite to the side where the slot is located. A bag with an antenna according to any one of the above.

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