JP5527579B2 - Vehicle antenna device - Google Patents

Description

  The present invention relates to a vehicle antenna device.

  As a vehicle antenna device, Patent Document 1 describes a slot antenna that uses a gap formed at a position between a first vehicle body portion (trunk lid in the drawing) and a second vehicle body portion (body in the drawing). Yes. In this slot antenna, an antenna signal is extracted at a tap point set in a loop-shaped gap. At this tap point, it is described that at least one of the first body part and the second body part is capacitively coupled (capacitance connection in the literature) to the radio frequency cable.

  In Patent Document 1, as a specific example of capacitive coupling, a spacer is provided in the second vehicle body portion between the first vehicle body portion and the second vehicle body portion. The spacer is formed with a conductive portion having a T-shaped cross section, and the conductive portion of the spacer is capacitively coupled in a state of being insulated from the second vehicle body portion by the electrically insulating layer. The conductive portion is connected to a conductor via an RF plug, and a coaxial cable is connected to the RF plug.

  Further, Patent Document 2 as a vehicle antenna device describes that a gap between two conductive panels constituting a vehicle is used as a slot of a slot antenna and a feeding point is provided at a predetermined portion of the slot.

  In this Patent Document 2, as a specific example of an antenna, a bonnet panel is used for one of the conductive panels, a front side panel or the like is used for the other of the conductive panels, and the central conductor of the coaxial cable constituting the feeder line at the feeding point It is described that the corresponding panel is capacitively coupled, and the outer conductor constituting the coaxial cable and the corresponding panel are capacitively coupled.

JP 2005-244981 A JP 2008-131253 A

  As described in Patent Document 1 or Patent Document 2, in the case of using a part of a vehicle body as an antenna, a conductor such as a panel configured as an outer wall of the vehicle body can be used as an antenna. The slot antenna has a structure in which an elongated hole is formed in a conductor as the name of the slot indicates, and a feeding point is formed at a position sandwiching the hole to function as an antenna, and a long hole is required.

  However, for example, when a slot antenna is configured using a trunk lid and a body at a position spaced apart from the trunk lid, when the trunk lid is opened, it does not function as an antenna, and transmission / reception becomes impossible. It will be a thing.

  Patent Document 1 and Patent Document 2 show a slot antenna, but an antenna device that allows a vehicle body component to function as one antenna element is also conceivable, and a configuration that realizes this is also desired.

  An object of the present invention is to rationally configure an antenna device using a vehicle body component.

A feature of the present invention is that an antenna element having an element length corresponding to a frequency band is disposed close to a first vehicle body component made of a conductor, thereby capacitively coupling the antenna element and the first vehicle body component. In addition, a first feeding point is formed on the antenna element, and a second feeding point is formed on a second vehicle body component at a position away from the antenna element , the first vehicle body component, and the second vehicle body component. An antenna is formed between the vehicle body components .

According to this configuration, the antenna element can transmit and receive radio waves corresponding to the frequency corresponding to the element length, and the first vehicle body component that is capacitively coupled to the antenna element and the second vehicle body component that is spaced apart from the first vehicle body component It is also possible to send and receive radio waves. As a result, an antenna device using the vehicle body component was constructed.

  The present invention resides in that the antenna element is formed in a linear shape.

  According to this configuration, the antenna element can be configured by using a linear material such as a copper wire, and can be arranged in a narrow space.

According to the present invention, one of the first vehicle body component and the second vehicle body component is configured by an opening / closing body that is supported by the vehicle body so as to be freely opened and closed, and a gap is formed in the opening / closing body in the closed position. The other of the first vehicle body component and the second vehicle body component is constituted by a body at a position opposite to each other ,
The antenna element may be disposed in a space that is opened when the opening / closing body is opened, and in a position where the antenna element is capacitively coupled by being close to the opening / closing body or the body in a state where the opening / closing body is in a closed position.

  In this configuration, a slot antenna having a slot between the opening / closing body in the closed position and the body can be configured, and when the opening / closing body is opened, the antenna element can function as an antenna. Transmission / reception is not blocked.

  In the present invention, the opening / closing body is a trunk lid, the antenna element is disposed along the gap between the trunk lid and the body, and the second feeding point is provided on one of the trunk lid and the body. May be formed.

  In this configuration, the antenna element is disposed in the gap between the track lid and the body, so that the antenna element is capacitively coupled between the trunk lid and the body, and the second feeding point is formed between the trunk lid and the body. Therefore, the trunk lid and the body can function as a slot antenna.

In the present invention, the first vehicle body component is a grille in which a plurality of bars are arranged with a gap so as to allow air to flow, and even if the antenna element is arranged on the inner side of the vehicle body from the grill. good.

  In this configuration, the antenna element can be capacitively coupled to the bar of the grill, and a slot antenna having a slot between a plurality of bars can be configured.

The present invention Rinho scan of the first body composition is supported in a state of electrical continuity in the body frame at a position away from the vehicle body frame Te interior smell of the bumper cover made of insulation resin in the configuration, the second body composition is constituted by the vehicle body frame, wherein the antenna element is disposed at a position capacitively coupled to the reinforcement, the second feeding point may be formed on the body frame .

  In this configuration, a slot antenna can also be configured by a lean hose that is capacitively coupled to the antenna element and a vehicle body frame that faces the antenna element with a gap therebetween.

  In the present invention, the wavelength of the target band may be set to λ, and the element length of the antenna element may be set to a length of λ / 4.

  According to this configuration, it is possible to satisfactorily transmit and receive radio waves having a wavelength in the target band by setting the element length of the antenna element.

It is a perspective view which shows the trunk lid in the closed position and open position of 1st Embodiment. It is a figure which shows the positional relationship of the trunk lid and radome of 1st Embodiment. It is a graph which shows the VSWR value of the antenna device of 1st Embodiment. It is a figure which shows the positional relationship of the trunk lid and radome of another embodiment of 1st Embodiment. It is a figure which shows arrangement | positioning and a structure of the antenna device of 2nd Embodiment. It is a graph which shows the VSWR value of the antenna device of 2nd Embodiment. It is a figure which shows arrangement | positioning and a structure of the antenna device of 3rd Embodiment. It is a graph which shows the VSWR value of the antenna device of 3rd Embodiment. It is a figure which shows arrangement | positioning and a structure of the antenna device of 4th Embodiment. It is a figure which shows arrangement | positioning and a structure of the antenna device of 5th Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
As shown in FIG. 1, a trunk lid 1 (an example of an opening / closing body / body structure) made of a conductor such as a steel plate is provided at the rear end portion of a vehicle body of a passenger car as a vehicle so as to be freely opened and closed. By providing the antenna element A in the gap between the trunk lid 1 and a body 2 made of a conductor like a steel plate (an example of a vehicle body component may be a fender), the antenna element A, the trunk lid 1 and A vehicle antenna device capable of transmitting and receiving radio waves with the body 2 is configured.

  The trunk space T is arranged at a position where both side portions and the rear end portion are surrounded by the body 2, and the trunk space T has a structure that opens upward by the opening portion. A trunk lid 1 is connected to an end of a hinge arm 3 supported at one end on the body 2, and the trunk lid 1 is supported so as to be switchable between a closed position for closing the opening and an open position for opening the opening. . Although not shown in the drawing, a latch mechanism for keeping the trunk lid 1 closed is provided.

  As shown in FIGS. 1 and 2, a weather strip 4 made of a flexible rubber material is provided along the opening edge 2S of the opening, and the antenna is located along the opening edge 2S (position along the weather strip 4). Element A is provided. On the inner surface (lower surface) inside the outer end 1E of the trunk lid 1, a bulging portion 1A is formed over substantially the entire circumference of the trunk lid 1 for improving the strength.

  As shown in FIG. 2B, the antenna element A is housed in a resin radome 6. The radome 6 is filled with an insulating resin 6A, and a holder 7 is supported so as to be electrically connected to a metal base portion 6B made of a conductor formed at one end of the radome 6. A coaxial cable C as a feed line is supported on the holder 7.

  The antenna element A is formed in a linear shape using a conductor linear material such as a copper alloy bent into an L shape, and the core wire of the coaxial cable C is connected to the first feeding point P1 at the end of the antenna element A. Ca is connected so as to be electrically conductive. Further, the mesh line Cb of the coaxial cable C is connected to the holder 7 so as to be electrically connected, and the flange portion 6C (functioning as the second feeding point P2) formed integrally with the base portion 6B is a metal screw 8. Thus, it is fixed so as to be electrically connected to the bulging portion 1A of the trunk lid 1. Thereby, the mesh line Cb of the coaxial cable C is electrically connected to the trunk lid 1 through the holder 7 and the base portion 6B.

  That is, in the antenna element A, the position where the core Ca of the coaxial cable C is electrically connected is the first feeding point P1, and the position where the flange portion 6C of the radome 6 is connected to the body 2 is the second feeding point P2. Become.

  By attaching the radome 6 in this way, the front end side of the antenna element A becomes parallel to the outer end 1E of the trunk lid 1 in a state where the trunk lid 1 is in the closed position. At the same time, the antenna element A is in a parallel posture at a position where the tip side of the antenna element A is close to the opening edge 2S of the body 2. With such a positional relationship, the antenna element A reaches a state of capacitive coupling with the body 2, and can function as a slot antenna having a slot S as a gap between the trunk lid 1 and the body 2.

  Further, in this vehicle antenna device, as shown in FIGS. 1B and 2A, when the trunk lid 1 is operated to the open position, the body 2 and the antenna element A are separated from each other. Element A is arranged in a space open to the side, and functions as a monopole antenna to realize transmission and reception.

  Since this antenna element A is bent, the sum of the lengths L1 and L2 is the element length as shown in FIG. The element length of the antenna element A is set to λ / 4, where λ is the upper limit wavelength of the target band. The other end of the coaxial cable C is provided with a receiver, a transmitter / receiver, and the like to receive digital terrestrial television broadcasting and to communicate with ITS. Further, the element length may be set to a length of λ / 4, where λ is a wavelength at the lower limit of the target band or a wavelength at the center of the band.

  FIG. 3 shows the VSWR characteristics of the antenna device shown in the first embodiment. In the graph of FIG. 3, the horizontal axis represents frequency and the vertical axis represents VSWR value. In addition, the frequencies and VSWR values at the measurement points M1, M2, and M3 shown in FIG.

  From these figures, in the antenna device of the first embodiment, the frequency at the measurement point M1 is 470.00 MHz and the VSWR value is 2.56, the frequency at the measurement point M2 is 620.00 MHz, and the VSWR value is 1.19. Yes, it can be understood that the frequency at the measurement point M3 is 770.00 MHz, the VSWR value is 1.97, and the VSWR value in the frequency band from the measurement point M1 to the measurement point M3 is less than 3.

[Another embodiment of the first embodiment]
In this alternative embodiment, as shown in FIG. 4, a second feeding point P <b> 2 is formed in the body 2, the mesh line Cb of the coaxial cable C is connected thereto, and the core wire Ca of the coaxial cable C is connected to the end of the antenna element A. It can also be implemented in a form of connection to the first feeding point P1 of the part. In addition, the thing which has the same function as 1st Embodiment is attached | subjected the number and code | symbol which are common to 1st Embodiment.

  The shape of the antenna element A and the configuration of the radome 6 that accommodates the antenna element A are the same as those in the first embodiment, but the radome 6 is adjacent to the opening edge 2S of the body 2 at a position adjacent to the trunk space T. The configuration differs from that of the first embodiment.

  By configuring the vehicle antenna device in this way, the front end side of the antenna element A is parallel to the outer end 1E of the trunk lid 1 in a state where the trunk lid 1 is in the closed position. At the same time, the antenna element A is arranged in a positional relationship in which the tip side of the antenna element A is parallel at a position close to the opening edge 2S of the body 2. With such a positional relationship, the antenna element A reaches a state of capacitive coupling with the trunk lid, and can function as a slot antenna having a slot S as a gap between the trunk lid 1 and the body 2.

  As described above, the antenna element A is provided at an intermediate position between the trunk lid 1 and the body 2, and the antenna element A is provided at a plurality of positions, such as by arranging the antenna element A at two positions sandwiching the latch mechanism. Diversity operation is also possible.

  As another embodiment of the first embodiment, the opening / closing body may be constituted by a door provided on the side surface of the vehicle body, and the opening / closing body may be constituted by a hatch provided at the rear end of the vehicle body.

[Second Embodiment]
As shown in FIG. 5, a radiator grille 11 for sucking air (allowing air flow) is provided at a position surrounded by the body 2 at the front end position of the vehicle body of the passenger car, and a bonnet 12 is disposed above the radiator grille 11. . In the radiator grille, the outer peripheral frame 11A, the plurality of bars 11B arranged in parallel with each other, and the short frame 11C that connects the plurality of bars 11B in a conductive state are molded with resin and subjected to metal plating. The surface becomes a conductor.

  The radiator grille 11 is supported by a metal main frame 13 that is electrically connected to the body 2, and a radiator 14 is disposed at a rear position thereof. By disposing the antenna element A at an intermediate position between the radiator grill 11 and the radiator 14, the body 2, the radiator grill 11, and the antenna element A constitute a vehicle antenna device.

  The antenna element A is housed in a resin radome 6. The radome 6 is filled with an insulating resin 6A, and a holder 7 is supported so as to be electrically connected to a metal base portion 6B formed at one end of the radome 6. A coaxial cable C as an electric wire is supported.

  The antenna element A is formed in a linear shape using a conductive linear material such as a copper alloy, and the core wire Ca of the coaxial cable C is electrically connected to the first feeding point P1 at the end of the antenna element A. It is connected to conduct. Further, the mesh line Cb of the coaxial cable C is connected to the base portion 6B so as to be electrically connected, and the flange portion 6C (functioning as the second feeding point P2) formed integrally with the base portion 6B is made of a metal screw. 8 is fixed to the main frame 13 so as to be electrically connected. Thereby, the mesh line Cb of the coaxial cable C is electrically connected to the body 2 via the holder 7 and the base portion 6B.

  By attaching the radome 6 in this manner, the antenna element A reaches a state where it is capacitively coupled to the radiator grille 11, and functions as a slot antenna type antenna element in which the gaps between the bars 11B of the radiator grille 11 are slots S. To do.

  In this antenna element A, the length L shown in FIG. 5C is the element length. The element length of the antenna element A is set to λ / 4, where λ is the upper limit wavelength of the target band. The other end of the coaxial cable C is provided with a receiver, a transmitter / receiver, and the like to receive digital terrestrial television broadcasting and to communicate with ITS. Further, the element length may be set to a length of λ / 4, where λ is a wavelength at the lower limit of the target band or a wavelength at the center of the band.

  FIG. 6 shows the VSWR characteristics of the antenna device shown in the second embodiment. In the graph of FIG. 6, the horizontal axis represents frequency and the vertical axis represents VSWR value. In addition, the frequencies and VSWR values at the measurement points M1, M2, and M3 shown in FIG.

  From these figures, in the antenna device of the second embodiment, the frequency at the measurement point M1 is 470.00 MHz and the VSWR value is 2.29, the frequency at the measurement point M2 is 620.00 MHz, and the VSWR value is 1.43. Yes, it can be understood that the frequency at the measurement point M3 is 770.00 MHz, the VSWR value is 2.13, and the VSWR value in the frequency band from the measurement point M1 to the measurement point M3 is less than 3.

[Another embodiment of the second embodiment]
In the second embodiment, the antenna device is configured by using the radiator grill 11 for sucking air as a vehicle body component. However, instead of the radiator grill 11 provided at the front end position of the vehicle body, the air is provided at the rear end position of the vehicle body. It is also possible to configure a vehicle antenna device using a grill that sends out the air and a grill that sucks air in and discharges air at the side of the vehicle body as a vehicle body component.

[Third Embodiment]
As shown in FIG. 7, a lean hose 22 made of a steel material is disposed inside a bumper cover 21 formed of an insulating resin at a front end position or a rear end position of a vehicle body of a passenger car. The lean hose 22 is made of a steel material. The intermediate frame 23 is connected to the vehicle body frame 24 so as to be electrically connected.

  A gap S is formed between the lean hose 22 and the vehicle body frame 24. And the antenna element A is arrange | positioned in the position close to the lean hose 22, and the vehicle antenna apparatus is comprised.

  The antenna element A is housed in a resin radome 6. The radome 6 is filled with an insulating resin 6A, and a holder 7 is supported so as to be electrically connected to a metal base portion 6B formed at one end of the radome 6. A coaxial cable C as an electric wire is supported.

  The antenna element A is formed in a linear shape using a conductive linear material such as a copper alloy, and the core wire Ca of the coaxial cable C is electrically connected to the first feeding point P1 at the end of the antenna element A. It is connected to conduct. Further, the mesh line Cb of the coaxial cable C is connected to the base portion 6B so as to be electrically connected, and the flange portion 6C (functioning as the second feeding point P2) formed integrally with the base portion 6B is made of a metal screw. 8 is fixed to the vehicle body frame 24 so as to be electrically connected. Thereby, the mesh line Cb of the coaxial cable C is electrically connected to the vehicle body frame 24 via the holder 7 and the base portion 6B.

  By attaching the radome 6 in this way, the antenna element A reaches a state where it is capacitively coupled to the lean hose 22, and the lean hose 22 and the antenna element A are capacitively coupled. Thereby, it functions as a slot antenna type antenna element having a slot S as a gap between the lean hose 22 and the vehicle body frame 24.

  In this antenna element A, the length L shown in FIG. The element length of the antenna element A is set to λ / 4, where λ is the upper limit wavelength of the target band. The other end of the coaxial cable C is provided with a receiver, a transmitter / receiver, and the like to receive digital terrestrial television broadcasting and to communicate with ITS. Further, the element length may be set to a length of λ / 4, where λ is a wavelength at the lower limit of the target band or a wavelength at the center of the band.

  In particular, in this antenna device, the antenna element A and the intermediate frame 23 are spaced apart in the longitudinal direction of the lean hose 22, and the spacing distance D is equal to the element length L of the antenna element A in the longitudinal direction of the lean hose 22. It is set to a value that matches (may be substantially matched). In this way, by making the separation distance D and the element length L coincide with each other, resonance is obtained even at a portion between the antenna element A and the intermediate frame 23 to realize good transmission / reception.

  FIG. 8 shows the VSWR characteristics of the antenna device shown in the third embodiment. In the graph of FIG. 8, the horizontal axis represents frequency and the vertical axis represents VSWR value. In addition, the frequencies and VSWR values at the measurement points M1, M2, and M3 shown in FIG.

  From these figures, in the antenna device of the second embodiment, the frequency at the measurement point M1 is 470.00 MHz and the VSWR value is 3.17, the frequency at the measurement point M2 is 620.00 MHz, and the VSWR value is 1.45. Yes, it can be understood that the frequency at the measurement point M3 is 770.00 MHz and the VSWR value is 3.33, and the VSWR value in the frequency band from the measurement point M1 to the measurement point M3 is a good value.

[Fourth Embodiment]
As shown in FIG. 9, a lean hose 22 made of a steel material is disposed inside a bumper cover 21 formed of an insulating resin at the front end position or the rear end position of a vehicle body of a passenger car. The lean hose 22 is connected to a body frame 24 made of steel through an intermediate frame 23 made of steel so as to be electrically connected. A plurality of conductors 26 are provided in a parallel posture on the inner surface side of the bumper cover 21 at a lower position of the bumper cover 21 that is lower than the lean hose 22. The lean hose 22, the intermediate frame 23, and the vehicle body frame 24 function as conductors.

  The plurality of conductors 26 are made of a good conductor such as a copper plate and are fixed to the inner surface of the bumper cover 21 with an adhesive or the like. And the antenna element A is arrange | positioned in the position close | similar to the some conductor 26, and the vehicle antenna apparatus is comprised.

  The antenna element A is housed in a resin radome 6. The radome 6 is filled with an insulating resin 6A, and a holder 7 is supported so as to be electrically connected to a metal base portion 6B formed at one end of the radome 6. A coaxial cable C as an electric wire is supported.

  The antenna element A is formed in a linear shape using a conductive linear material such as a copper alloy, and the core wire Ca of the coaxial cable C is electrically connected to the first feeding point P1 at the end of the antenna element A. Connect so that it is conductive. Further, the mesh line Cb of the coaxial cable C is connected to the base portion 6B so as to be electrically connected, and the flange portion 6C (functioning as the second feeding point P2) formed integrally with the base portion 6B is made of a metal screw. 8 is fixed to the lean hose 22 so as to be electrically connected. Thereby, the mesh line Cb of the coaxial cable C is electrically connected to the lean hose 22 through the holder 7 and the base portion 6B.

  By attaching the radome 6 in this manner, the antenna element A reaches a state of capacitive coupling with the plurality of conductors 26, and functions as a slot antenna type antenna element in which the gaps between the plurality of conductors 26 are slots S.

  In this antenna element A, the length L shown in FIG. 9A is the element length. The element length of the antenna element A is set to λ / 4, where λ is the upper limit wavelength of the target band. The other end of the coaxial cable C is provided with a receiver, a transmitter / receiver, and the like to receive digital terrestrial television broadcasting and to communicate with ITS. Further, the element length may be set to a length of λ / 4, where λ is a wavelength at the lower limit of the target band or a wavelength at the center of the band.

[Fifth Embodiment]
As shown in FIG. 10, a lean hose 22 made of a steel material is disposed inside a bumper cover 21 formed of an insulating resin at the front end position of a vehicle body of a passenger car. The lean hose 22 is connected to the vehicle body frame 24 through an intermediate frame 23 made of steel so as to be electrically connected. A plurality of bars 28 are arranged in a parallel posture in the air guide holes formed in the bumper cover 21 at a position lower than the lean hose 22. The lean hose 22, the intermediate frame 23, and the vehicle body frame 24 function as conductors.

  The plurality of bars 28 are formed of a resin material in a grill shape and subjected to metal plating, so that the surfaces thereof become conductors. And the antenna element A is arrange | positioned in the position close to the some bar | burr 28, and the vehicle antenna apparatus is comprised.

  The antenna element A is housed in a resin radome 6. The radome 6 is filled with an insulating resin 6A, and a holder 7 is supported so as to be electrically connected to a metal base portion 6B formed at one end of the radome 6. A coaxial cable C as an electric wire is supported.

  The antenna element A is formed in a linear shape using a conductive linear material such as a copper alloy, and the core wire Ca of the coaxial cable C is electrically connected to the first feeding point P1 at the end of the antenna element A. It is connected to conduct. Further, the mesh line Cb of the coaxial cable C is connected to the base portion 6B so as to be electrically connected, and the flange portion 6C (functioning as the second feeding point P2) formed integrally with the base portion 6B is made of a metal screw. 8 is fixed to the lean hose 22 so as to be electrically connected. Thereby, the mesh line Cb of the coaxial cable C is electrically connected to the lean hose 22 through the holder 7 and the base portion 6B.

  By attaching the radome 6 in this manner, the antenna element A reaches a state where it is capacitively coupled to the plurality of bars 28, and functions as a slot antenna type antenna element in which the gaps between the plurality of bars 28 are slots S.

  In this antenna element A, the length L shown in FIG. The element length of the antenna element A is set to λ / 4, where λ is the upper limit wavelength of the target band. The other end of the coaxial cable C is provided with a receiver, a transmitter / receiver, and the like to receive digital terrestrial television broadcasting and to communicate with ITS. Further, the element length may be set to a length of λ / 4, where λ is a wavelength at the lower limit of the target band or a wavelength at the center of the band.

  Thus, the antenna device of the present invention forms the first feeding point P1 in the antenna element A, and forms the second feeding point P2 in the vehicle body components such as the trunk lid 1, the body 2, and the lean hose 22, A member that capacitively couples to the antenna element A functions as an antenna element, and reception and transmission are possible without providing the antenna element in a form protruding from the outer surface of the vehicle body.

  Further, the antenna device can be configured as a slot antenna in which the gap between the vehicle body components is a slot S by capacitively coupling the antenna element A by placing it close to the vehicle body components. Further, the slot antenna can be configured by causing the gap between the bars 11B of the radiator grille 11 to function as the slot S, and allowing the gap between the lean hose 22 and the vehicle body frame 24 to function as the slot S.

  The present invention can use all conductors constituting the outer wall of a vehicle to constitute an antenna device.

1 Opening / closing body / Trunk lid 2 Body 11 Grill (Radiator grill)
11B Bar 21 Bumper cover 22 Lean hose 24 Body frame P1 First feeding point P2 Second feeding point A Antenna element

Claims (7)

An antenna element having an element length corresponding to the frequency band is disposed close to the first vehicle body component made of a conductor, whereby the antenna element and the first vehicle body component are capacitively coupled, and the first feeding point was formed in the antenna element, the second feed point formed in the second body composition of the position spaced from the antenna element, between said first body composition, and said second body composition A vehicle antenna device having an antenna formed thereon .   The vehicle antenna device according to claim 1, wherein the antenna element is formed in a linear shape. One of said first body composition and the second vehicle component comprises, consists of openably supported closing member to the body, facing each other across a gap in said opening and closing member in the closed position The other of the first vehicle body component and the second vehicle body component is configured with a body at a position,
2. The antenna element is disposed in a space that is opened when the opening / closing body is opened and is capacitively coupled by being close to the opening / closing body or the body in a state where the opening / closing body is in a closed position. Or the antenna apparatus for vehicles of 2.   The opening / closing body is a trunk lid, the antenna element is disposed along the gap between the trunk lid and the body, and the second feeding point is formed on one of the trunk lid and the body. The vehicle antenna device according to claim 3. The first vehicle body component is a grille in which a plurality of bars are arranged with gaps so as to allow air to flow, and the antenna element is arranged on the inner side of the vehicle body from the grill. The vehicle antenna device according to 2. The first vehicle component comprises, consists of Rinho scan that is supported in a state of electrical continuity in the body frame at a position away from the vehicle body frame Te interior smell of the bumper cover made of insulation resin, The said 2nd vehicle body component is comprised by the said vehicle body frame, the said antenna element is arrange | positioned in the position which carries out capacitive coupling with the said lean hose, and the said 2nd electric power feeding point is formed in the said vehicle body frame. The vehicle antenna device described.   3. The vehicle antenna device according to claim 2, wherein the wavelength of the target band is λ, and the element length of the antenna element is set to λ / 4.

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