JP6979325B2

JP6979325B2 - Antenna device

Info

Publication number: JP6979325B2
Application number: JP2017203267A
Authority: JP
Inventors: 徳純中田; 亮佐々木
Original assignee: Yokowo Co Ltd
Current assignee: Yokowo Co Ltd
Priority date: 2017-10-20
Filing date: 2017-10-20
Publication date: 2021-12-08
Anticipated expiration: 2037-10-20
Also published as: JP2019080096A

Description

本発明は、アンテナ装置に関する。 The present invention relates to an antenna device.

従来、特許文献１のように、防水用のシール部材などを使って防水性を高めた車載アンテナ装置が提案されている。 Conventionally, as in Patent Document 1, an in-vehicle antenna device having improved waterproofness by using a waterproof sealing member or the like has been proposed.

特開２０１６−０２５４７７号公報Japanese Unexamined Patent Publication No. 2016-025477

しかしながら、アンテナ装置内に侵入してしまった水を排出させることまでは考慮されていない。 However, it is not considered to discharge the water that has entered the antenna device.

したがって本発明の目的は、アンテナ装置内に侵入した水の排水を可能にするアンテナ装置を提供することである。 Therefore, an object of the present invention is to provide an antenna device that enables drainage of water that has entered the antenna device.

本発明に係るアンテナ装置は、アンテナケースと、アンテナケースで覆われた空間内に位置するアンテナ素子と、アンテナ素子に電気的に接続された基板と、基板を保持するベースと、アンテナケースの外縁に沿った円環部と、円環部の外縁に沿って円環部の下面に設けられ断面が台形形状を有する側部とを有するパッドとを備え、パッドは、内部空間と外部空間を結ぶ溝を有する。 The antenna device according to the present invention includes an antenna case, an antenna element located in a space covered by the antenna case, a substrate electrically connected to the antenna element, a base holding the substrate, and an outer edge of the antenna case. A pad having an annular portion along the line and a side portion provided on the lower surface of the annular portion along the outer edge of the annular portion and having a trapezoidal cross section is provided, and the pad connects the internal space and the external space. Has a groove.

溝を介して、内部空間にたまった水を外部空間に排出させることが出来る。 The water accumulated in the internal space can be discharged to the external space through the groove.

好ましくは、溝における内部空間の側の端面は、円環部の下面に接する。 Preferably, the end face of the groove on the side of the interior space is in contact with the lower surface of the annular portion.

溝におけるパッドの内部空間の側の端面が側部の内周面に接して円環部の下面に接しない形態に比べて、溝を大きくして、パッドにおける取付面と接しない領域を大きく出来、溝を介して水が流れやすく出来る。 Compared to the form in which the end surface of the pad on the side of the internal space in the groove is in contact with the inner peripheral surface of the side portion and is not in contact with the lower surface of the annular portion, the groove can be made larger and the area not in contact with the mounting surface of the pad can be made larger. , Water can easily flow through the groove.

また、好ましくは、側部は、下面の外縁が上面の外縁に比べて外側に位置するように構成される。 Further, preferably, the side portion is configured so that the outer edge of the lower surface is located on the outer side of the outer edge of the upper surface.

側部における下面の外縁が、上面の外縁に比べて内側に凹むように形成される形態に比べて、アンテナ装置と取付面の間に凹みが形成されず、美観が損なわれず、且つ水の侵入を防ぎやすくなる。 Compared to the form in which the outer edge of the lower surface in the side portion is formed so as to be recessed inward compared to the outer edge of the upper surface, no recess is formed between the antenna device and the mounting surface, the aesthetic appearance is not spoiled, and water intrusion occurs. It becomes easier to prevent.

さらに好ましくは、溝における外部空間の側の端面は、側部の下面に接する。 More preferably, the end face on the side of the exterior space in the groove is in contact with the lower surface of the side portion.

溝におけるパッドの外部空間の側の端面が側部の外周面に接して側部の下面に接しない形態に比べて、溝を外部から目立たないように出来る。 The groove can be made inconspicuous from the outside as compared with the form in which the end surface of the pad on the side of the external space in the groove is in contact with the outer peripheral surface of the side portion and not in contact with the lower surface of the side portion.

また、好ましくは、ベースは、基板の外縁に沿ったリブを有する。 Also preferably, the base has ribs along the outer edge of the substrate.

リブを設けることにより、アンテナ装置に侵入した水が、リブの内側に浸入しにくくなり、リブの内側に設けられたケーブル孔を介して、車両の内部へ水が浸入することを防ぐことが可能になる。 By providing the rib, it is difficult for water that has entered the antenna device to enter the inside of the rib, and it is possible to prevent water from entering the inside of the vehicle through the cable hole provided inside the rib. become.

さらに好ましくは、リブには、壁状に形成された領域に、ケーブルを通す開口が設けられ、ベースには、ケーブルを上下に通すケーブル孔が設けられ、ケーブル孔は、溝と開口との間に配置される。 More preferably, the rib is provided with an opening through which the cable is passed in the wall-shaped region, the base is provided with a cable hole through which the cable is passed up and down, and the cable hole is provided between the groove and the opening. Is placed in.

また、好ましくは、溝は、取り付けられる面における高さが低い領域と対向する領域に設けられる。 Also, preferably, the groove is provided in a region facing a low height region on the mounting surface.

また、好ましくは、溝は、側部の内周面に設けられ、取り付けられる前は、溝が前記側部の外周面に隠れ、取り付けられた時に、溝が内部空間と外部空間を結ぶ。 Further, preferably, the groove is provided on the inner peripheral surface of the side portion, and before the groove is attached, the groove is hidden by the outer peripheral surface of the side portion, and when the groove is attached, the groove connects the internal space and the external space.

以上のように本発明によれば、アンテナ装置内に侵入した水の排水を可能にするアンテナ装置を提供することができる。 As described above, according to the present invention, it is possible to provide an antenna device that enables drainage of water that has entered the antenna device.

本実施形態におけるアンテナ装置を上方から見た斜視図で、アンテナケースを省略したものである。It is a perspective view of the antenna device in this embodiment as viewed from above, and the antenna case is omitted. アンテナ装置を組み立てる前の各部を上方から見た斜視図である。It is a perspective view which looked at each part before assembling an antenna device from above. アンテナ装置の側面図で、アンテナケースを省略したものである。The side view of the antenna device omits the antenna case. 金属ベースを上方から見た斜視図である。It is a perspective view which looked at the metal base from above. アンテナ装置の下面図である。It is a bottom view of the antenna device. アンテナ装置を下方から見た斜視図である。It is a perspective view which looked at the antenna device from below. パッドにおける溝が設けられた領域を拡大して下方から見た斜視図である。It is a perspective view which enlarged and viewed from the lower part of the area which provided the groove in a pad. ルーフに取り付けられる前のアンテナ装置の前方先端部であって溝が無い部分のｘｚ断面構成図である。It is a cross-sectional view of xz of the front tip portion of the antenna device before being attached to the roof and having no groove. ルーフに取り付けられる前のアンテナ装置の前方先端部であって溝が有る部分のｘｚ断面構成図である。It is an xz sectional view of the front tip portion of the antenna device before being attached to the roof and having a groove. ルーフに取り付けられた後のアンテナ装置の前方先端部であって、溝が無い部分のｘｚ断面構成図である。It is an xz sectional view of the front tip portion of the antenna device after being attached to the roof, and has no groove. ルーフに取り付けられた後のアンテナ装置の前方先端部であって、溝が有る部分のｘｚ断面構成図である。It is the front tip part of the antenna device after being attached to the roof, and is the xz cross-sectional composition view of the part with a groove. 溝におけるパッドの内部空間の側の端面が側部の内周面に接して円環部の下面に接しない、アンテナ装置の前方先端部であって溝が有る部分のｘｚ断面構成図である。It is a cross-sectional view of xz of the front tip portion of an antenna device having a groove, in which the end surface on the side of the internal space of the pad in the groove is in contact with the inner peripheral surface of the side portion and not in contact with the lower surface of the annular portion. 溝におけるパッドの外部空間の側の端面が側部の外周面に接して側部の下面に接しない、アンテナ装置の前方先端部であって溝が有る部分のｘｚ断面構成図である。FIG. 3 is an xz cross-sectional configuration diagram of a front end portion of an antenna device having a groove, in which an end surface on the side of the outer space of the pad in the groove is in contact with the outer peripheral surface of the side portion and not in contact with the lower surface of the side portion. 溝におけるパッドの外部空間の側の端面が側部の外周面に接して側部の下面に接しない、アンテナ装置の前方先端部であって溝が有る部分のｘｚ断面構成図で、図１３とは別の形態を示すものである。FIG. 13 is a cross-sectional view of xz of the front tip portion of the antenna device having a groove, in which the end surface of the pad on the side of the external space in the groove is in contact with the outer peripheral surface of the side portion and not in contact with the lower surface of the side portion. Indicates another form.

以下、本実施形態について、図を用いて説明する。本実施形態におけるアンテナ装置１は、ルーフなど車両の上面に取り付けられ、アンテナケース２、第１アンテナ素子３、第２アンテナ素子４、第１アンテナ素子ホルダー５、第２アンテナ素子ホルダー６、無給電素子ホルダー７、無給電素子８、ＳＤＡＲＳ（Satellite Digital Audio Radio Service）アンテナ９、第１基板１０、ＧＮＳＳ（Global Navigation Satellite System／全球測位衛星システム）アンテナ１１、第２基板１２、パッド１３、金属ベース１４、スプリング１５、防水シール１６、取付部材（仮保持ホルダー１７、係止部材１８、ワッシャー１９、ボルト２０）を備える（図１〜図１１参照）。 Hereinafter, this embodiment will be described with reference to the drawings. The antenna device 1 in the present embodiment is attached to the upper surface of a vehicle such as a roof, and has an antenna case 2, a first antenna element 3, a second antenna element 4, a first antenna element holder 5, a second antenna element holder 6, and no power supply. Element holder 7, non-feeding element 8, SDARS (Satellite Digital Audio Radio Service) antenna 9, first board 10, GNSS (Global Navigation Satellite System) antenna 11, second board 12, pad 13, metal base It includes 14, a spring 15, a waterproof seal 16, and mounting members (temporary holding holder 17, locking member 18, washer 19, bolt 20) (see FIGS. 1 to 11).

方向を説明するために、アンテナ装置１が取り付けられる車両の前後方向をｘ方向、ｘ方向と垂直な左右方向をｙ方向、ｘ方向とｙ方向に垂直な略鉛直方向をｚ方向として説明する。図１において、ｘｙｚ軸のそれぞれの矢印が指し示す方向をそれぞれ前方向、右方向、上方向と定義する。 In order to explain the direction, the front-rear direction of the vehicle to which the antenna device 1 is attached will be described as the x direction, the left-right direction perpendicular to the x direction will be described as the y direction, and the substantially vertical direction perpendicular to the x direction and the y direction will be described as the z direction. In FIG. 1, the directions pointed to by the arrows on the xyz axis are defined as the forward direction, the right direction, and the upward direction, respectively.

アンテナケース２は、アンテナ装置１を構成する部材を覆う部材で、非透光性と電波透過性を有する合成樹脂製（ポリカーボネート（Polycarbonate）とＡＳＡ（Acrylate Styrene Acrylonitrile）を含む合成樹脂などで形成された樹脂成型品）であり、例えば、ｘ方向前方がｘ方向後方よりも低くなるように傾斜し、両側面が内側に湾曲したシャークフィン形状を有する（図２参照）。
アンテナケース２は、下面が開口し、アンテナ装置１を構成する部材であって、アンテナケース２以外のもの（ＧＮＳＳアンテナ１１など）を、ｚ方向上方から覆う。
すなわち、後述するアンテナ素子（第１アンテナ素子３、第２アンテナ素子４、ＳＤＡＲＳアンテナ素子、ＧＮＳＳアンテナ素子）は、アンテナケース２で覆われる空間内に位置する。 The antenna case 2 is a member that covers the members constituting the antenna device 1, and is made of a synthetic resin having non-translucency and radio wave transmission (polycarbonate) and a synthetic resin containing ASA (Acrylate Styrene Acrylonitrile). It is a resin molded product), and has, for example, a shark fin shape in which the front in the x direction is inclined so as to be lower than the rear in the x direction, and both side surfaces are curved inward (see FIG. 2).
The antenna case 2 has an open lower surface and is a member constituting the antenna device 1 and covers a member other than the antenna case 2 (GNSS antenna 11 or the like) from above in the z direction.
That is, the antenna elements (first antenna element 3, second antenna element 4, SDARS antenna element, GNSS antenna element) described later are located in the space covered by the antenna case 2.

アンテナケース２には、内壁からｚ方向下方に突出するように、パッド１３や金属ベース１４への取り付け用の取付孔（不図示）が設けられ、アンテナケース２を金属ベース１４などに固定する際に、アンテナケース２の取付孔と、パッド１３の取付孔（第１取付孔１３ａ）と、金属ベース１４の取付孔（第２取付孔１４ａ）とを介して、ネジ止めされる。
本実施形態では、取付孔は、アンテナケース２における内壁に６つ設けられる例を示すが、取付孔の数はこれに限定されるものではない。 The antenna case 2 is provided with mounting holes (not shown) for mounting on the pad 13 or the metal base 14 so as to project downward from the inner wall in the z direction, and when the antenna case 2 is fixed to the metal base 14 or the like. The antenna case 2 is screwed through the mounting hole of the antenna case 2, the mounting hole of the pad 13 (first mounting hole 13a), and the mounting hole of the metal base 14 (second mounting hole 14a).
In the present embodiment, six mounting holes are provided on the inner wall of the antenna case 2, but the number of mounting holes is not limited to this.

第１アンテナ素子３は、電話回線を用いた移動体通信用のアンテナ素子であり、携帯電話基地局と通信を行い、通話状態にある端末からの情報を受信したり、当該端末へ情報を送信したりするために使用される（送受信用）。 The first antenna element 3 is an antenna element for mobile communication using a telephone line, communicates with a mobile phone base station, receives information from a terminal in a talking state, and transmits information to the terminal. Used for sending and receiving (for sending and receiving).

第１アンテナ素子３は、板状に形成され、ｚ方向高さがほぼ一定の稜線部と、当該稜線部からｚ方向に延びる側面部を含む形状を有する。 The first antenna element 3 is formed in a plate shape and has a shape including a ridge line portion having a substantially constant height in the z direction and a side surface portion extending from the ridge line portion in the z direction.

第１アンテナ素子３における側面部の一方（ｘ方向後方から見て右側）の下端には、ｚ方向下方に突出する第１突起３１が設けられ、第１突起３１を介して、第１アンテナ素子３が第２基板１２に取り付けられる。 A first projection 31 projecting downward in the z direction is provided at the lower end of one of the side surface portions (right side when viewed from the rear in the x direction) of the first antenna element 3, and the first antenna element is provided via the first projection 31. 3 is attached to the second substrate 12.

具体的には、第１突起３１が第２基板１２の孔に挿入されて半田付けされることで、第１アンテナ素子３が第２基板１２に立設された状態で、電気的に接続される。 Specifically, the first projection 31 is inserted into the hole of the second substrate 12 and soldered so that the first antenna element 3 is electrically connected in a state of being erected on the second substrate 12. Ru.

第１アンテナ素子３と第２基板１２の間には、第１アンテナ素子３を保持する第１アンテナ素子ホルダー５が設けられる。 A first antenna element holder 5 for holding the first antenna element 3 is provided between the first antenna element 3 and the second substrate 12.

第２アンテナ素子４は、電話回線を用いた移動体通信用のアンテナ素子であり、携帯電話基地局と通信を行い、通話状態にある端末からの情報を受信するために使用される（受信専用）。 The second antenna element 4 is an antenna element for mobile communication using a telephone line, and is used for communicating with a mobile phone base station and receiving information from a terminal in a call state (reception only). ).

第２アンテナ素子４は、板状に形成され、ｘ方向前方がｘ方向後方よりも低くなるように傾斜する面状の稜線部と、当該稜線部からｚ方向に延びる側面部を含む形状を有する。 The second antenna element 4 is formed in a plate shape and has a shape including a planar ridge line portion inclined so that the front side in the x direction is lower than the rear portion in the x direction and a side surface portion extending from the ridgeline portion in the z direction. ..

第２アンテナ素子４における側面部の一方（ｘ方向後方から見て左側）の下端には、ｚ方向下方に突出する長方形形状の第２突起４１が設けられ、第２突起４１を介して、第２アンテナ素子４が第２基板１２であって第１アンテナ素子３よりもｘ方向前方に取り付けられる。 A rectangular second projection 41 projecting downward in the z direction is provided at the lower end of one of the side surface portions (left side when viewed from the rear in the x direction) of the second antenna element 4, and the second projection 41 is provided via the second projection 41. 2 The antenna element 4 is the second substrate 12 and is attached to the front of the first antenna element 3 in the x direction.

具体的には、第２突起４１が第２基板１２の孔に挿入されて半田付けされることで、第２アンテナ素子４が第２基板１２に立設された状態で、電気的に接続される。 Specifically, the second projection 41 is inserted into the hole of the second substrate 12 and soldered so that the second antenna element 4 is electrically connected in a state of being erected on the second substrate 12. Ru.

第２アンテナ素子４と第２基板１２の間には、第２アンテナ素子４を保持する第２アンテナ素子ホルダー６が設けられる。 A second antenna element holder 6 for holding the second antenna element 4 is provided between the second antenna element 4 and the second substrate 12.

ＳＤＡＲＳアンテナ９は、デジタル放送の受信を行うために使用されるパッチアンテナであり、ＳＤＡＲＳ用アンテナ素子（不図示）は無給電素子ホルダー７に保持された無給電素子８により上部が覆われており、当該ＳＤＡＲＳアンテナ素子は、第１基板１０に電気的に接続される。 The SDARS antenna 9 is a patch antenna used for receiving digital broadcasting, and the antenna element for SDARS (not shown) is covered with a non-feeding element 8 held in the non-feeding element holder 7. , The SDARS antenna element is electrically connected to the first substrate 10.

第１基板１０の上面には、ＳＤＡＲＳアンテナ９が取り付けられる。
第１基板１０は、ネジ止めで、金属ベース１４に取り付けられる。 The SDARS antenna 9 is attached to the upper surface of the first substrate 10.
The first substrate 10 is attached to the metal base 14 by screwing.

ＧＮＳＳアンテナ１１は、ＧＰＳ（Global Positioning System）衛星などから、当該衛星の位置情報と時間情報の受信を行うために使用される。
ＧＮＳＳアンテナ１１は、第２基板１２であって第１アンテナ素子３よりもｘ方向前方で且つ第２アンテナ素子４よりもｘ方向後方に取り付けられるパッチアンテナであり、ＧＮＳＳ用アンテナ素子（不図示）は、第２基板１２に電気的に接続される。 The GNSS antenna 11 is used to receive position information and time information of the satellite from a GPS (Global Positioning System) satellite or the like.
The GNSS antenna 11 is a patch antenna which is a second substrate 12 and is attached in front of the first antenna element 3 in the x direction and behind the second antenna element 4 in the x direction, and is an antenna element for GNSS (not shown). Is electrically connected to the second substrate 12.

第２基板１２は、第１基板１０よりもｘ方向前方に配置され、上面に第１アンテナ素子３と第２アンテナ素子４とＧＮＳＳアンテナ１１が取り付けられる。
第２基板１２は、ネジ止めで、金属ベース１４に取り付けられる。
第１基板１０の下面、及び第２基板１２の下面には、ケーブル２５が電気的に接続され、当該ケーブル２５を介して、カーナビゲーションシステムなど車両の電気機器と接続される。 The second substrate 12 is arranged in front of the first substrate 10 in the x direction, and the first antenna element 3, the second antenna element 4, and the GNSS antenna 11 are attached to the upper surface thereof.
The second substrate 12 is attached to the metal base 14 by screwing.
A cable 25 is electrically connected to the lower surface of the first substrate 10 and the lower surface of the second substrate 12, and is connected to an electric device of a vehicle such as a car navigation system via the cable 25.

パッド１３は、エラストマー（Elastomer）やゴムなどで形成された環状の弾性部材であり、アンテナケース２の下端周縁部に嵌入され、アンテナケース２と金属ベース１４の間に挟まれた状態で配置され、アンテナケース２の下端周縁部と車両との間の隙間の目隠しとして機能する。
パッド１３は、金属ベース１４の外縁に沿って形成された円環部１３１と、円環部１３１の外縁に沿って円環部１３１の下面１３１ａに設けられ、円環部１３１よりも細いリング形状を有し、ｘｙ平面に垂直で且つリングの内側と外側を通る平面で切った断面（縦断面）が略台形形状を有する側部１３２を有する。 The pad 13 is an annular elastic member made of elastomer, rubber, or the like, is fitted into the lower end peripheral portion of the antenna case 2, and is arranged in a state of being sandwiched between the antenna case 2 and the metal base 14. , It functions as a blindfold for the gap between the lower end peripheral portion of the antenna case 2 and the vehicle.
The pad 13 is provided on the annular portion 131 formed along the outer edge of the metal base 14 and the lower surface 131a of the annular portion 131 along the outer edge of the annular portion 131, and has a ring shape thinner than the annular portion 131. Has a side portion 132 having a substantially trapezoidal cross section (vertical cross section) cut in a plane perpendicular to the xy plane and passing through the inside and outside of the ring.

なお、図８〜図１４では、円環部１３１と側部１３２の境界を説明するために、断面上に破線が示されるが、円環部１３１と側部１３２は一体的に形成されていて、実際には当該破線は存在しない。 In FIGS. 8 to 14, a broken line is shown on the cross section in order to explain the boundary between the annulus portion 131 and the side portion 132, but the annulus portion 131 and the side portion 132 are integrally formed. , Actually, the broken line does not exist.

パッド１３の周縁部（円環部１３１）には、アンテナケース２や金属ベース１４とネジ止めするための第１取付孔１３ａが設けられ、円環部１３１の内側には、孔１３ｂが形成され、孔１３ｂを介して、リブ１４１など金属ベース１４の一部、及びケーブル２５が上下に通される。 A first mounting hole 13a for screwing to the antenna case 2 and the metal base 14 is provided on the peripheral portion (annular portion 131) of the pad 13, and a hole 13b is formed inside the annular portion 131. , A part of the metal base 14 such as the rib 141, and the cable 25 are passed up and down through the hole 13b.

側部１３２における下面１３２ａの外縁１３２ａ１は、側部１３２における上面１３２ｂの外縁１３２ｂ１及び円環部１３１の外縁１３１ｂに比べて、外側に突出するように、側部１３２における外周面１３２ｄには傾斜が設けられる。
側部１３２における下面１３２ａの外縁１３２ａ１が、側部１３２における上面１３２ｂの外縁１３２ｂ１に比べて内側に凹むように構成された場合には、アンテナ装置１とルーフ２１の間に凹みが形成されているように見えて美観が損なわれる。
また、当該凹みは外部からの圧力に弱いため、高圧の水が噴射された場合などに、当該凹みを介して水が浸入しやすくなる。 The outer peripheral surface 132d of the side portion 132 is inclined so that the outer edge 132a1 of the lower surface 132a of the side portion 132 projects outward as compared with the outer edge 132b1 of the upper surface 132b and the outer edge 131b of the annular portion 131 of the side portion 132. It will be provided.
When the outer edge 132a1 of the lower surface 132a on the side portion 132 is configured to be recessed inward with respect to the outer edge 132b1 of the upper surface 132b on the side portion 132, a recess is formed between the antenna device 1 and the roof 21. It looks like this and the aesthetics are spoiled.
Further, since the dent is vulnerable to external pressure, water easily infiltrates through the dent when high-pressure water is sprayed.

本実施形態では、側部１３２における下面１３２ａの外縁１３２ａ１が、上面１３２ｂの外縁１３２ｂ１に比べて外側に突出するように構成されるため、内側に凹むように構成される形態に比べて、アンテナ装置１とルーフ２１の間に凹みが形成されず、美観が損なわれず、且つ水の侵入を防ぎやすくなる。 In the present embodiment, since the outer edge 132a1 of the lower surface 132a on the side portion 132 is configured to protrude outward as compared with the outer edge 132b1 of the upper surface 132b, the antenna device is configured to be recessed inward. No dent is formed between 1 and the roof 21, the appearance is not spoiled, and it becomes easy to prevent the intrusion of water.

側部１３２の内側（内周面１３２ｃ）には、パッド１３の内部空間（ルーフ２１とパッド１３と金属ベース１４とで閉ざされた空間）ａ１と外部空間（アンテナ装置１の外側で、且つパッド１３を介して当該内部空間と隔てられた空間）ａ２とを結ぶ細長い縦長の溝１３３が設けられる（図５〜図１１参照）。
溝１３３は、側部１３２におけるｘ方向前方に設けられる。
溝１３３を介して、内部空間ａ１にたまった水を外部空間ａ２に排出させることが出来る。 Inside the side portion 132 (inner peripheral surface 132c), the internal space of the pad 13 (the space closed by the roof 21, the pad 13, and the metal base 14) a1 and the external space (outside the antenna device 1 and the pad). An elongated vertically elongated groove 133 connecting the internal space and the space (space) a2 via the 13 is provided (see FIGS. 5 to 11).
The groove 133 is provided in front of the side portion 132 in the x direction.
The water accumulated in the internal space a1 can be discharged to the external space a2 through the groove 133.

溝１３３におけるパッド１３の外部空間ａ２の側の端面（下側端面）１３３ａは、側部１３２の下面１３２ａに接し、溝１３３におけるパッド１３の内部空間ａ１の側の端面（上側端面）１３３ｂは、円環部１３１の下面１３１ａに接している。
側部１３２における内周面１３２ｃに設けられた溝１３３は、側部１３２の外側（外周面１３２ｄ）には接しない。
従って、アンテナ装置１をルーフ２１に押しつける前の状態では、側部１３２の外周面１３２ｄに隠れて、溝１３３はｘ方向前方の外部空間ａ２から見えない。 The end surface (lower end surface) 133a on the side of the outer space a2 of the pad 13 in the groove 133 is in contact with the lower surface 132a of the side portion 132, and the end surface (upper end surface) 133b on the side of the inner space a1 of the pad 13 in the groove 133 is. It is in contact with the lower surface 131a of the annular portion 131.
The groove 133 provided on the inner peripheral surface 132c of the side portion 132 does not contact the outside of the side portion 132 (outer peripheral surface 132d).
Therefore, in the state before the antenna device 1 is pressed against the roof 21, the groove 133 is hidden by the outer peripheral surface 132d of the side portion 132 and cannot be seen from the external space a2 in the front in the x direction.

アンテナ装置１がルーフ２１に取り付けられる際には、防水シール１６がルーフ２１に密着するように、ボルト２０などの取付部材を介して、アンテナ装置１がルーフ２１に近づくように付勢された状態（アンテナ装置１がルーフ２１に押しつけられた状態）にされ、これにより、側部１３２における溝１３３が無い部分については、下面１３２ａの内側部分がルーフ２１に接する状態（図１０参照）となり、側部１３２における溝１３３が設けられた領域については、下面１３２ａの内側部分がルーフ２１に接する状態とならず、溝１３３によりパッド１３とルーフ２１とが離れた状態（図１１参照）となる。
側部１３２における下面１３２ａの外側部分は、ルーフ２１から浮き上がり、ｚ方向上方に離れた状態になるため、溝１３３が内部空間ａ１と外部空間ａ２を結び、溝１３３を介して内部空間ａ１にたまった水を外部空間ａ２に排出させることが可能になる。 When the antenna device 1 is attached to the roof 21, the antenna device 1 is urged to approach the roof 21 via a mounting member such as a bolt 20 so that the waterproof seal 16 is in close contact with the roof 21. (The state in which the antenna device 1 is pressed against the roof 21) is set, so that the inner portion of the lower surface 132a is in contact with the roof 21 (see FIG. 10) in the portion of the side portion 132 where the groove 133 does not exist. In the region of the portion 132 where the groove 133 is provided, the inner portion of the lower surface 132a is not in contact with the roof 21, and the pad 13 and the roof 21 are separated by the groove 133 (see FIG. 11).
Since the outer portion of the lower surface 132a of the side portion 132 rises from the roof 21 and is separated upward in the z direction, the groove 133 connects the internal space a1 and the external space a2 and accumulates in the internal space a1 via the groove 133. It becomes possible to discharge the collected water to the external space a2.

特に、車両のルーフ２１における、ｘ方向後方がｘ方向前方よりもｚ方向高さが高くなるように傾いた面にアンテナ装置１が取り付けられた場合に、溝１３３を介して、内部空間ａ１にたまった水を重力で外部空間ａ２に排出させることが出来る。 In particular, when the antenna device 1 is attached to a surface of the roof 21 of the vehicle that is inclined so that the rear in the x direction is higher than the front in the x direction in the z direction, the interior space a1 is provided via the groove 133. The accumulated water can be discharged to the external space a2 by gravity.

なお、車両のルーフ２１における、ｘ方向前方がｘ方向後方よりもｚ方向高さが高くなるように傾いた面にアンテナ装置１が取り付けられた場合には、側部１３２におけるｘ方向後方の内側に溝１３３が設けられる、すなわち、アンテナ装置１が車両のルーフ２１に取り付けられた時に、側部１３２におけるｚ方向の高さが低くなる領域の内側に溝１３３が設けられるのが望ましい。 When the antenna device 1 is attached to a surface of the roof 21 of the vehicle that is inclined so that the front in the x direction is higher in the height in the z direction than the rear in the x direction, the inside of the rear in the x direction in the side portion 132. It is desirable that the groove 133 be provided in the groove 133, that is, the groove 133 is provided inside the region of the side portion 132 where the height in the z direction becomes low when the antenna device 1 is attached to the roof 21 of the vehicle.

溝１３３におけるパッド１３の内部空間ａ１の側の端面１３３ｂが円環部１３１の下面１３１ａに接しているので、当該端面１３３ｂが側部１３２の内周面１３２ｃに接して円環部１３１の下面１３１ａに接しない形態（図１２参照）に比べて、溝１３３を大きくして、パッド１３におけるルーフ２１と接しない領域を大きく出来、溝１３３を介して水が流れやすく出来る。 Since the end surface 133b on the side of the internal space a1 of the pad 13 in the groove 133 is in contact with the lower surface 131a of the annular portion 131, the end surface 133b is in contact with the inner peripheral surface 132c of the side portion 132 and is in contact with the lower surface 131a of the annular portion 131. The groove 133 can be made larger so that the area of the pad 13 that does not come into contact with the roof 21 can be made larger than the form that does not come into contact with the roof 21 (see FIG. 12), and water can easily flow through the groove 133.

また、溝１３３におけるパッド１３の外部空間ａ２の側の端面１３３ａが側部１３２の下面１３２ａに接して側部１３２の外周面１３２ｄに接しないので、当該端面１３３ａが側部１３２の外周面１３２ｄに接して側部１３２の下面１３２ａに接しない形態（図１３、図１４参照）に比べて、溝１３３を外部から目立たないように出来る。
このため、例えば、ｘ方向後方などに、単に排水口を設けたような形態を考えて比べたとしても、溝１３３がアンテナ装置１の美観を損ねないように出来る。 Further, since the end surface 133a on the side of the outer space a2 of the pad 13 in the groove 133 is in contact with the lower surface 132a of the side portion 132 and not in contact with the outer peripheral surface 132d of the side portion 132, the end surface 133a is on the outer peripheral surface 132d of the side portion 132. The groove 133 can be made inconspicuous from the outside as compared with the form in which the groove 133 is in contact with the lower surface 132a of the side portion 132 and is not in contact with the lower surface 132a (see FIGS. 13 and 14).
Therefore, for example, the groove 133 can be prevented from spoiling the aesthetic appearance of the antenna device 1 even if the configuration is such that a drainage port is simply provided behind in the x direction.

金属ベース１４は、第１基板１０と第２基板１２とパッド１３を保持する金属プレートであり、周縁部には、アンテナケース２やパッド１３とネジ止めするための第２取付孔１４ａが設けられ、中央部には、ケーブル２５を上下に通すためのケーブル孔１４ｂが設けられる（図４参照）。
すなわち、アンテナ素子（第１アンテナ素子３、第２アンテナ素子４、ＳＤＡＲＳアンテナ素子、ＧＮＳＳアンテナ素子）は、第１基板１０及び第２基板１２を介して、金属ベース１４に保持される。 The metal base 14 is a metal plate that holds the first substrate 10, the second substrate 12, and the pad 13, and a second mounting hole 14a for screwing to the antenna case 2 and the pad 13 is provided on the peripheral portion. , A cable hole 14b for passing the cable 25 up and down is provided in the central portion (see FIG. 4).
That is, the antenna element (first antenna element 3, second antenna element 4, SDARS antenna element, GNSS antenna element) is held on the metal base 14 via the first substrate 10 and the second substrate 12.

また、金属ベース１４の上面で、パッド１３と接する領域よりも内側であって、第２基板１２を保持する領域の外縁にリブ１４１が設けられる。
リブ１４１は、ケーブル孔１４ｂを囲む壁状に形成される。 Further, the rib 141 is provided on the upper surface of the metal base 14, inside the region in contact with the pad 13, and on the outer edge of the region holding the second substrate 12.
The rib 141 is formed in a wall shape surrounding the cable hole 14b.

ただし、本実施形態のようにリブ１４１が設けられた領域の基板（第２基板１２）とは別の基板（第１基板１０）が設けられている場合には、ケーブル２５のうち、ケーブル孔１４ｂから第１基板１０に延び第１基板１０と電気的に接続されるケーブル２５１を通す開口１４１ａがリブ１４１のｘ方向後方に設けられ、開口１４１ａからｘ方向前方に向けてケーブル２５１を引き回す誘導路１４１ｂが設けられる。 However, when a substrate (first substrate 10) different from the substrate (second substrate 12) in the region where the rib 141 is provided is provided as in the present embodiment, the cable hole in the cable 25 is provided. An opening 141a through which the cable 251 extending from 14b to the first substrate 10 and electrically connected to the first substrate 10 is passed is provided behind the rib 141 in the x direction, and the cable 251 is routed from the opening 141a toward the front in the x direction. Road 141b is provided.

ｚ方向に延びる壁状のリブ１４１を設けることにより、アンテナ装置１に侵入した水が、リブ１４１の内側に浸入しにくくなり、リブ１４１の内側に設けられたケーブル孔１４ｂを介して、車両の内部へ水が浸入することを防ぐことが可能になる。
特に、車両のルーフ２１における、ｘ方向後方がｘ方向前方よりもｚ方向高さが高くなるように傾いた面にアンテナ装置１が取り付けられた場合に、開口１４１ａから誘導路１４１ｂを通って、リブ１４１の内側に水が浸入しにくく出来る。 By providing the wall-shaped rib 141 extending in the z direction, it becomes difficult for water that has entered the antenna device 1 to enter the inside of the rib 141, and the vehicle can be driven through the cable hole 14b provided inside the rib 141. It becomes possible to prevent water from entering the inside.
In particular, when the antenna device 1 is attached to a surface of the roof 21 of the vehicle that is inclined so that the rear in the x direction is higher than the front in the x direction, the antenna device 1 is passed through the taxiway 141b from the opening 141a. It is possible to prevent water from entering the inside of the rib 141.

従って、ケーブル孔１４ｂが溝１３３と開口１４１ａとの間に配置されるように、溝１３３と開口１４１ａが構成されるのが望ましい。
溝１３３がルーフ２１におけるｚ方向高さが低い領域と対向する領域に設けられ、開口１４１ａが当該低い領域よりもｚ方向高さが高い領域と対向する領域に設けられることで、開口１４１ａには水が浸入しにくく出来、内部空間ａ１に侵入した水は溝１３３から排出されやすく出来る。 Therefore, it is desirable that the groove 133 and the opening 141a are configured so that the cable hole 14b is arranged between the groove 133 and the opening 141a.
The groove 133 is provided in the region of the roof 21 facing the region where the height in the z direction is low, and the opening 141a is provided in the region facing the region where the height in the z direction is higher than the low region, so that the opening 141a is provided. Water can be less likely to enter, and water that has entered the internal space a1 can be easily discharged from the groove 133.

なお、車両のルーフ２１における、ｘ方向前方がｘ方向後方よりもｚ方向高さが高くなるように傾いた面にアンテナ装置１が取り付けられた場合には、開口１４１ａがリブ１４１のｘ方向前方に設けられる、すなわち、アンテナ装置１が車両のルーフ２１に取り付けられた時に、リブ１４１におけるｚ方向の高さが高くなる領域に開口１４１ａが設けられるのが望ましい。 When the antenna device 1 is attached to a surface of the roof 21 of the vehicle that is inclined so that the front in the x direction is higher than the rear in the x direction, the opening 141a is in front of the rib 141 in the x direction. That is, it is desirable that the opening 141a is provided in a region of the rib 141 where the height in the z direction is high when the antenna device 1 is attached to the roof 21 of the vehicle.

金属ベース１４の下部には、スプリング１５、防水シール１６、取付部材（仮保持ホルダー１７、係止部材１８、ワッシャー１９、ボルト２０）が設けられる。
スプリング１５は、金属製の板バネであり、アンテナ装置１を車両のルーフ２１に取り付けた時に、ルーフ２１と接触し、アンテナ装置１で発生する不要共振の周波数をアンテナ装置１の所望帯域外の周波数に変えるために使用される。
防水シール１６は、ケーブル孔１４ｂ及び当該取付部材を囲むリング形状に構成され、金属ベース１４と車両のルーフ２１の間（内部空間ａ１）から、車両の内部へ水が浸入するのを防止するために設けられる。
アンテナ装置１は、当該取付部材を介して、車両のルーフ２１などに取り付けられる。 A spring 15, a waterproof seal 16, and a mounting member (temporary holding holder 17, locking member 18, washer 19, bolt 20) are provided on the lower portion of the metal base 14.
The spring 15 is a leaf spring made of metal, and when the antenna device 1 is attached to the roof 21 of the vehicle, the spring 15 comes into contact with the roof 21 and the frequency of unnecessary resonance generated in the antenna device 1 is set outside the desired band of the antenna device 1. Used to change to frequency.
The waterproof seal 16 is formed in a ring shape surrounding the cable hole 14b and the mounting member, and is for preventing water from entering the inside of the vehicle from between the metal base 14 and the roof 21 of the vehicle (internal space a1). It is provided in.
The antenna device 1 is attached to the roof 21 of the vehicle or the like via the attachment member.

１アンテナ装置
２アンテナケース
２１車両のルーフ
３第１アンテナ素子
３１第１突起
４第２アンテナ素子
４１第２突起
５第１アンテナ素子ホルダー
６第２アンテナ素子ホルダー
７無給電素子ホルダー
８無給電素子
９ＳＤＡＲＳアンテナ
１０第１基板
１１ＧＮＳＳアンテナ
１２第２基板
１３パッド
１３ａ第１取付孔
１３ｂ孔
１３１円環部
１３１ｂ円環部の外縁
１３２側部
１３２ａ側部の下面
１３２ａ１側部の下面の外縁
１３２ｂ側部の上面
１３２ｂ１側部の上面の外縁
１３２ｃ側部の内周面
１３２ｄ側部の外周面
１３３溝
１３３ａ溝における外部空間の側の端面
１３３ｂ溝における内部空間の側の端面
１４金属ベース
１４ａ第２取付孔
１４ｂケーブル孔
１４１リブ
１４１ａ開口
１４１ｂ誘導路
１７仮保持ホルダー
１８係止部材
１９ワッシャー
２０ボルト
２５ケーブル
２５１第１基板と電気的に接続されるケーブル
ａ１パッドの内部空間
ａ２パッドの外部空間
1 Antenna device 2 Antenna case 21 Vehicle roof 3 1st antenna element 31 1st protrusion 4 2nd antenna element 41 2nd protrusion 5 1st antenna element holder 6 2nd antenna element holder 7 No feeding element holder 8 No feeding element 9 SDARS antenna 10 1st board 11 GNSS antenna 12 2nd board 13 Pad 13a 1st mounting hole 13b hole 131 Circular part 131b Circular part outer edge 132 Side part 132a Side lower surface 132a1 Side lower surface outer edge 132b Side part Upper surface 132b1 Outer edge of the upper surface of the side 132c Inner peripheral surface of the side 132d Outer surface of the side 133 Groove 133a End face of the side of the outer space in the groove 133b End face of the side of the inner space in the groove 14 Metal base 14a Second mounting hole 14b Cable hole 141 Rib 141a Opening 141b Guide path 17 Temporary holding holder 18 Locking member 19 Washer 20 Bolt 25 Cable 251 Cable that is electrically connected to the first board a1 Internal space of the pad a2 External space of the pad

Claims

An antenna device that can be attached to a vehicle
With the antenna case,
The antenna element located in the space covered by the antenna case and
A substrate electrically connected to the antenna element and
The base that holds the substrate and
A pad having an annular portion along the outer edge of the antenna case and a side portion provided on the lower surface of the annular portion along the outer edge of the annular portion and having a trapezoidal cross section is provided.
The pad is an antenna device characterized by having a plurality of grooves connecting an internal space and an external space.

The antenna device according to claim 1, wherein the end surface of the groove on the side of the internal space is in contact with the lower surface of the annular portion.

The antenna device according to claim 1 or 2, wherein the side portion is configured such that the outer edge of the lower surface is located outside the outer edge of the upper surface.

The antenna device according to any one of claims 1 to 3, wherein the end surface of the groove on the side of the external space is in contact with the lower surface of the side portion.

The antenna device according to any one of claims 1 to 4, wherein the base has ribs along the outer edge of the substrate.

The rib is provided with an opening through which a cable is passed in a wall-shaped region.
The base is provided with a cable hole through which the cable is passed up and down.
The antenna device according to claim 5, wherein the cable hole is arranged between the groove and the opening.

The antenna device according to any one of claims 1 to 6, wherein the groove is provided in a region facing a region having a low height on the mounting surface.

The groove is provided on the inner peripheral surface of the side portion.
Before mounting, the groove is hidden behind the outer peripheral surface of the side portion,
The antenna device according to any one of claims 1 to 7, wherein the groove connects the internal space and the external space when attached.

An antenna device that can be attached to a vehicle
With the antenna case,
The antenna element located in the space covered by the antenna case and
A substrate electrically connected to the antenna element and
The base that holds the substrate and
A pad having an annular portion along the outer edge of the antenna case and a side portion provided on the lower surface of the annular portion along the outer edge of the annular portion and having a trapezoidal cross section is provided.
The pad has a groove connecting the internal space and the external space.
The groove is provided on the inner peripheral surface of the side portion.
Before mounting, the groove is hidden behind the outer peripheral surface of the side portion,
An antenna device characterized in that the groove connects the internal space and the external space when attached.