JPH11308034A - Antenna arrangement structure of transponder for vehicle - Google Patents

Abstract

(57) [Summary] [Problem] There is no restriction on the application target depending on the vehicle type.
Also, to provide an antenna arrangement structure of a vehicle-mounted transponder in which the antenna can be arranged with good communication sensitivity in an advantageous state in terms of durability of the antenna itself or an object to be attached. SOLUTION: An antenna 13 of a transponder is embedded in an upper wall 5a of a door mirror case 5 for holding a door mirror 10 of a vehicle 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transponder mounted on a vehicle for transmitting and receiving an information signal for toll payment to and from an interrogator at a toll gate on a toll road.
In particular, the present invention relates to an arrangement structure of an antenna used for wirelessly transmitting and receiving information signals.

[0002]

2. Description of the Related Art In recent years, in order to prevent a vehicle that stops at a tollgate on a toll road from paying a toll or passing a toll ticket to the front, and to prevent subsequent vehicles from congesting, FIG. As shown in a perspective view, an interrogator 30 installed at the gate 21 of the tollgate 20 and a transponder 8 mounted on the vehicle 1 wirelessly transmit and receive information signals, and settle tolls using electronic money or the like. Attempts have been made to perform processing so that the vehicle 1 does not have to stop at the tollgate 20 and to reduce the occurrence of traffic congestion near the tollgate 20.

[0003] In order to perform such a toll settlement process, a transponder 8 mounted on a vehicle is provided with a storage medium such as an IC card in which monetary information such as electronic money is stored, and a form of writing information to the storage medium. A transmitter / receiver or the like for wirelessly transmitting / receiving information signals between the control device for reading and writing and the interrogator 30 is required, and this transceiver naturally requires an antenna.

[0004] Since the main body of the transponder 8 is installed in the vehicle for loading and unloading a storage medium such as an IC card and inputting necessary information, the antenna of the transponder 8 is also integrated with the main body. It is usually arranged inside the vehicle 1 irrespective of whether it is separate or not.

More specifically, as shown in the explanatory view of FIG. 11, the antenna 13 is disposed on the dashboard 7 as a transponder 8 integrated with the main body 9, or as shown in FIGS. As shown in the illustrations, the center console 2
The dashboard 7 is separate from the main body 9 housed in the
It is arranged on the upper part and the upper part of the inner surface of the windshield 6.

However, in each of these arrangements, the front glass 6 is interposed between the antenna 13 and the interrogator 30, which becomes an obstacle and deteriorates the sensitivity of signal transmission and reception. And the like, there is a problem that the signal transmission / reception sensitivity is further deteriorated by a wiper (not shown) moving on the surface of the windshield 6.

The windshield 6 and the dashboard 7 are large elements that affect the visual sense of the interior of the vehicle 1. Therefore, the shapes of the windshield 6 and the dashboard 7 vary depending on the vehicle 1. In addition, there is also a problem that in order to dispose the antenna 13 on these, individual measures must be taken for each type of the target vehicle 1.

Therefore, as a technique that can solve these problems, it is necessary to dispose an antenna outside the vehicle.
16107 and JP-A-8-221621 have conventionally been proposed.

For example, in Japanese Utility Model Laid-Open No. 2-116107,
The antenna is embedded or integrally attached to the visor attached to the sunroof of the roof.
In No. 1621, it is mounted on the front hood, rear trunk, or on the roof.

[0010]

However, as described in Japanese Utility Model Application Laid-Open No. 2-116107, the arrangement of the antenna on the sunroof visor on the roof is based on the premise that the vehicle has a sunroof. However, there is a limit to vehicles in which an antenna can be arranged in this way, and there is a problem that the versatility as an antenna arrangement structure is lacking.

On the other hand, in the case of Japanese Patent Application Laid-Open No. Hei 8-221621, there is an exception because there is a type of vehicle such as a one-box car that does not have a rear trunk. Since there is no limitation on the type of vehicle, it is superior to the prior art of Japanese Utility Model Laid-Open No. 2-116107 in that it has versatility as an antenna arrangement structure.

However, the front hood, the roof, or the rear trunk is usually formed of a metal plate, and particularly when it is sunny, heat is generated by direct sunlight. There is a problem that.

In addition, if the antenna is to be mounted on a metal part such as the front bonnet, the roof, or the rear trunk, it is necessary to use a suitable metal fitting. In this case, the front hood, roof, or rear trunk, which is a metal part exposed to the outside of the vehicle, may be damaged, causing inconvenience such as rust. There is a defect that there is.

The present invention has been made in view of the above circumstances,
It is an object of the present invention to dispose an antenna with good communication sensitivity in a state where there is no restriction on the application target depending on the type of vehicle and the antenna itself or the durability of the attachment target is advantageous. It is an object of the present invention to provide a vehicle-mounted transponder antenna arrangement structure that can be used.

[0015]

According to a first aspect of the present invention, there is provided an on-vehicle transponder antenna arrangement structure according to the first aspect of the present invention, which is provided on a vehicle, and is provided at a gate on a lane on which the vehicle runs. An antenna used to wirelessly transmit and receive the information signal in an in-vehicle transponder that performs payment processing of a toll on the runway based on an information signal transmitted to and received from an installed interrogator; The antenna is disposed in a door mirror case for holding a door mirror of the vehicle.

Further, in the antenna arrangement structure of the transponder according to the present invention described in claim 2, the antenna is embedded inside the door mirror case.

Further, in the antenna arrangement structure of the transponder according to the present invention, the antenna is mounted on a surface of the door mirror case.

According to a fourth aspect of the present invention, there is provided an antenna arrangement structure for a vehicle-mounted transponder according to the present invention, wherein the antenna is disposed between the surface of the door mirror case and the antenna in a predetermined posture with respect to the door mirror case. It is assumed that a pedestal is interposed.

Further, the antenna arrangement structure of the transponder according to the present invention according to the present invention is provided in a vehicle and transmits / receives to / from an interrogator installed at a gate on a track on which the vehicle runs. A vehicle-mounted transponder that performs payment processing of a toll on the runway based on the information signal to be transmitted, wherein the antenna is used to wirelessly transmit and receive the information signal, wherein the front door of the vehicle is provided. Wherein the antenna is disposed on an eaves member attached to the antenna.

According to a sixth aspect of the present invention, there is provided the transponder-mounted antenna of the present invention, wherein the antenna is embedded inside the eaves member.

Further, in the antenna arrangement structure for a transponder according to the present invention, the antenna is attached to a surface of the eaves member.

The antenna arrangement structure for a vehicle-mounted transponder according to the present invention is arranged along a front pillar of the vehicle with the front door closed, and is arranged in a vertical direction of the vehicle. The eaves member has an inclined front portion that extends obliquely with respect to the antenna, and the antenna is disposed at the inclined front portion.

According to the antenna arrangement structure of the vehicle-mounted transponder according to the first aspect of the present invention, an information signal is wirelessly transmitted between the interrogator of the gate on the road and the vehicle portion around the door mirror case. Since there is no obstacle that hinders transmission / reception of the antenna, the antenna can be provided with good communication sensitivity, and the following can be further performed.

First, since the door mirror case is generally formed by resin molding, there is a possibility that the antenna may be adversely affected by high temperature due to direct sunlight as in the case where the antenna is attached to a metal vehicle part or part. In addition, the antenna can be arranged in the vehicle in an advantageous state in terms of durability.

Further, since the door mirror case made of resin is to be attached, even if metal fittings are used, the door mirror case does not suffer from inconvenience such as rust, and the durability of the door mirror case to be attached is reduced. However, it is possible to arrange the antenna in the vehicle in an advantageous state.

Further, since the door mirror is indispensably provided regardless of the type of vehicle, the installation structure can be applied regardless of the type of vehicle by setting the antenna to be attached to the door mirror case. As a result, the versatility of the antenna arrangement structure can be improved.

According to the antenna arrangement structure of the transponder for a vehicle according to the present invention, since the antenna is embedded inside the door mirror case, the antenna is arranged in the door mirror case. Also, a shape that causes a sense of incongruity does not occur on the exterior of the door mirror case, and it is possible to maintain the aesthetic appearance of the exterior mirror case in terms of the shape.

In addition, as long as the door mirror case is not transparent or translucent, the buried antenna is not visible from the outside of the door mirror case, so that the aesthetic appearance of the door mirror case can be maintained even in color. It becomes possible.

Further, according to the antenna arrangement structure of the transponder for vehicle according to the present invention, the antenna and the door mirror case are manufactured separately by mounting the antenna on the surface of the door mirror case. In this way, it is possible to attach the antenna later, and it is possible to reduce the manufacturing or assembly cost at a low price, and it is possible to replace the antenna in the event of a failure or the like.

Further, according to the antenna arrangement structure of the transponder for a vehicle according to the present invention, the posture of the surface portion of the door mirror case where the antenna is mounted varies depending on the type of the vehicle and the like. Also, the antenna can be attached to the door mirror case in a state where the antenna has a good sensitivity posture.

Further, according to the antenna arrangement structure of the transponder for a vehicle according to the present invention, the vehicle part around the eaves member attached to the front door has a gate on the runway. Since there are no obstacles that interfere with the transmission and reception of information signals wirelessly with the device, it is possible to arrange the antenna with good communication sensitivity, and then, It becomes even more possible.

First, since the eaves member attached to the front door is generally formed by resin molding, high heat is generated by direct sunlight as in the case where an antenna is attached to a metal vehicle part or component. It is possible to arrange the antenna in the vehicle in an advantageous state in terms of durability without adversely affecting the antenna.

Furthermore, since the eaves member made of resin is to be attached, even if metal fittings are used, the inconvenience such as rust does not occur on the eaves member, and the durability of the eaves member to be attached is reduced. However, it is possible to arrange the antenna in the vehicle in an advantageous state.

Further, since the front door to which the eaves member is attached is indispensable regardless of the type of the vehicle, the antenna should be attached to the eaves member attached to the front door. Accordingly, the arrangement structure can be applied regardless of the type of vehicle, and the versatility of the antenna arrangement structure can be improved.

Further, according to the antenna arrangement structure of the transponder for a vehicle according to the present invention, since the antenna is buried inside the eaves member attached to the front door, the eaves member is provided. Even if the antenna is disposed in the eaves member, a shape that causes a sense of incongruity does not occur on the eaves member in appearance, and it is possible to maintain the aesthetic appearance of the eaves member in the shape of the eaves member.

Further, according to the antenna arrangement structure of the transponder for a vehicle according to the present invention, by mounting the antenna on the surface of the eaves member, the antenna and the eaves member are manufactured separately. In this way, it is possible to attach the antenna later, and it is possible to reduce the manufacturing or assembly cost at a low price, and it is possible to replace the antenna in the event of a failure or the like.

According to the antenna arrangement structure of the transponder according to the present invention, the transponder transmits and receives an information signal to and from the interrogator provided at the gate of the tollgate. The runway area is generally located in front of the gate with a size corresponding to the signal transmission output and reception sensitivity of the interrogator, and when viewed from a vehicle traveling on the runway, the interrogator is located ahead in the traveling direction. The transmission and reception of the information signal are performed in the position.

[0038] Therefore, the antenna is arranged at the inclined front portion of the eaves member, which is arranged along the front pillar of the vehicle with the front door closed, and is inclined with respect to the vertical direction of the vehicle. By doing so, the antenna is oriented toward the interrogator when the vehicle is located in the lane area where the transponder transmits and receives information signals to and from the interrogator, and the transmission and reception sensitivity of the information signal is further improved. It becomes possible.

[0039]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the appearance of a vehicle to which the antenna arrangement structure of the transponder according to the present invention is applied. In FIG. 1, the same parts and members as those shown in FIGS.
The description is given with the same reference numerals as those given in those figures.

The vehicle 1 has a door mirror case 5 made of a synthetic resin molded article disposed at the front end of the front door 3. A transponder main body 9 is provided on a dashboard 7 inside the vehicle 1. Is arranged.

Next, the first to fourth embodiments of the present invention applied to the case where an antenna of a transponder formed separately from the main body 9 is disposed in the door mirror case 5 of the vehicle 1 will be described. The antenna arrangement structure of the transponder will be described with reference to FIGS.

First, the antenna arrangement structure of the transponder according to the first embodiment of the present invention will be described with reference to FIG.

In FIG. 2, reference numeral 10 denotes a door mirror disposed at the opening of the door mirror case 5, and 11 denotes a drive mechanism for changing the direction of the door mirror 10, such as a motor or a gear train. An antenna 13 connected to an antenna terminal (not shown) of the main body 9 by a lead wire (not shown) or the like is embedded in the upper wall portion 5a of the door mirror case 5.

The upper wall portion 5a of the door mirror case 5 in which the antenna 13 is embedded extends so as to be inclined so that the rear of the vehicle 1 in the front-rear direction is higher than the front. Antenna 13 buried inside
Is composed of a thin and somewhat flexible material such as a microstrip antenna.

The antenna 13 is not shown in the drawing because it is embedded by insert molding or the like when the door mirror case 5 is manufactured. However, the antenna 13 has heat resistance and pressure resistance, and after the door mirror case 5 is completed. The antenna 13 is covered with a material that can secure required sensitivity.

According to the arrangement structure of the first embodiment, the antenna 13 is buried in the upper wall portion 5a of the door mirror case 5 where there are no obstacles in the vicinity that hinder transmission and reception of radio signals. Therefore, the antenna 13 can be arranged with good communication sensitivity, and since the door mirror case 5 is made of a synthetic resin, the heat is not heated by direct sunlight, so that the antenna 13 is adversely affected. Can also be prevented.

In addition, according to the arrangement structure of the first embodiment, the antenna 13 is embedded inside the door mirror case 5 and is not exposed to the outside in both the shape and the color. The antenna 13 can be disposed on the door mirror case 5 without deteriorating the beauty of both the shape and the color.

As shown in FIG. 10, the track area in which the transponder 8 transmits and receives information signals to and from the interrogator 30 provided at the gate 21 of the tollgate 20 generally has an interrogator 30 Is located in front of the gate 21 with a size corresponding to the signal transmission output and the reception sensitivity of the vehicle, and when viewed from the vehicle 1 traveling on the lane, the information signal is transmitted in a state where the interrogator 30 is located ahead in the traveling direction. Transmission and reception will be performed.

Under such circumstances, according to the arrangement structure of the first embodiment, as shown in FIG. 2, the upper wall portion 5 of the door mirror case 5 whose surface is inclined slightly toward the front of the vehicle 1.
a, the antenna 13 is buried therein, and as a result, the antenna 13 also assumes a posture inclined forward of the vehicle 1 like the surface of the upper wall portion 5a. When the antenna 13 is oriented toward the interrogator 30 when passing through the gate 21, the transmission / reception sensitivity of the information signal with the interrogator 30 can be further improved.

Next, the antenna arrangement structure of the transponder according to the second embodiment of the present invention will be described with reference to FIG. 3, which is an enlarged perspective view of the door mirror case 5.

In the second embodiment, the antenna 13 is covered with a material having water resistance and impact resistance and capable of securing the required sensitivity of the antenna 13, and It is attached to the surface of the upper wall 5a using an adhesive or a pressure-sensitive adhesive sheet, and is arranged so as to fit on the surface of the upper wall 5a.

According to the disposition structure of the second embodiment, similarly to the disposition structure of the first embodiment, the door mirror case 5 in which there is no obstacle in the periphery that hinders the transmission and reception of the radio signal does not exist. Since the antenna 13 is attached to the upper wall portion 5a, the antenna 13 is disposed with good communication sensitivity, and since the door mirror case 5 is made of synthetic resin, the heat generation due to direct sunlight does not occur. This can also prevent adverse effects on the antenna 13 from occurring.

Similarly, according to the arrangement structure of the second embodiment, similarly to the arrangement structure of the first embodiment, the upper wall 5a of the door mirror case 5 whose surface is slightly inclined toward the front of the vehicle 1 is formed. When the vehicle 1 passes through the gate 21 of the tollgate 20, the antenna 13 is attached, and as a result, the antenna 13 is also inclined forward in the same manner as the surface of the upper wall 5a. By setting the antenna 13 so as to face the interrogator 30, the transmission / reception sensitivity of the information signal with the interrogator 30 can be further improved.

According to the arrangement structure of the second embodiment,
Since the door mirror case 5 and the antenna 13 can be manufactured separately, the manufacturing or assembling cost can be suppressed at a low cost. In addition, since the antenna 13 is exposed to the outside of the door mirror case 5, a malfunction may occur. The antenna 13 can be detached from the door mirror case 5 and can be replaced as a single unit.

In addition, since the antenna 13 is attached to the door mirror case 5 made of a synthetic resin, the antenna 13 may be attached to the door mirror case 5 with a metal fitting (not shown) instead of an adhesive or an adhesive sheet. Even so, the metal fitting does not cause inconvenience such as generation of rust on the door mirror case 5, and allows the antenna 13 to be mounted in an advantageous state in terms of durability of the door mirror case 5.

Next, the antenna arrangement structure of the transponder for vehicle according to the third embodiment of the present invention will be described with reference to FIG. 4 which is an enlarged perspective view of the door mirror case 5.

In the third embodiment, the vehicle 1 is mounted on the upper wall 5a of the door mirror case 5.
The width dimension of the antenna 13 along the front-back direction of
The difference from the arrangement structure of the second embodiment is that the antenna 13 is larger than the antenna 13 in the embodiment, and a part of the antenna 13 is slightly protruded to the rear of the vehicle 1 from the opening of the door mirror case 5. This point is configured similarly to the arrangement structure of the second embodiment.

According to the arrangement structure of the third embodiment, the same effects as those of the arrangement structure of the second embodiment can be obtained.
A part of the antenna 13 slightly protruding rearward serves as an eave, and blocks direct sunlight from being irradiated on the door mirror 10 from an angle that reflects toward the occupant. It is possible to prevent raindrops from adhering to the surface.

Next, the antenna arrangement structure of the transponder according to the fourth embodiment of the present invention will be described with reference to FIG. 5, which is an enlarged perspective view of the door mirror case 5.

In the fourth embodiment, the antenna 13 is attached to the upper wall 5a of the door mirror case 5 by the pedestal 1.
5 is different from the arrangement structure of the second embodiment, and the other points are the same as those of the arrangement structure of the second embodiment.

The pedestal 15 includes a lower frame 15a attached to the surface of the upper wall 5a of the door mirror case 5, and an upper frame 15 connected to the lower frame 15a via a pivot 15c.
b, the antenna 13 is attached to the upper frame 15b, and by adjusting the relative angle of the upper frame 15b to the lower frame 15a in the circumferential direction of the pivot 15c, the antenna 13 is mounted on the upper wall 5a of the door mirror case 5. It is configured such that the mounting angle of 13 can be adjusted to an arbitrary angle and held at that angle.

According to the arrangement structure of the fourth embodiment, the same effect as that of the arrangement structure of the second embodiment can be obtained, and the mounting angle of the antenna 13 with respect to the upper wall portion 5a of the door mirror case 5 can be obtained. Can be adjusted to an arbitrary angle. Therefore, even if the inclination angle of the upper wall portion 5a of the door mirror case 5 differs depending on the type and type of the vehicle 1, the antenna 13 is connected to the vehicle regardless of the inclination angle of the upper wall portion 5a. With respect to 1, the lens can be attached to an arbitrary tilt angle having the best sensitivity, and the angle can be adjusted according to a change in the situation thereafter.

The angle of the pedestal 15 cannot be adjusted as in the fourth embodiment, and a pedestal for mounting the antenna 13 at a fixed angle may be used. Even in such a case, the antenna 13 is attached. Even if the angle of inclination of the door mirror case portion varies depending on the type and type of the vehicle 1, the antenna 13 is connected to the door mirror case 5 regardless of the angle of inclination.
Can be attached to any inclination angle having the best sensitivity.

Subsequently, the antenna arrangement of the transponder for the vehicle mounted according to each of the fifth to eighth embodiments of the present invention applied when the antenna 13 of the transponder 8 is arranged on the front door 3 of the vehicle 1 The structure will be described with reference to FIGS.

First, the antenna arrangement structure of the transponder according to the fifth embodiment of the present invention will be described with reference to FIG. 6, which is an enlarged perspective view of the front door 3.

Reference numeral 17 in FIG. 6 denotes a sunshade, a windshield or a rain shield, which is formed by synthetic resin molding and is attached from the upper side 3b to the front side 3c of the wind frame 3a of the front door 3. (Corresponding to an eaves member). In the fifth embodiment, the visor 1
The antenna 13 is buried in the inside of the antenna 7.

That is, as shown in FIG. 1, the wind frame 3a has the upper side 3b extending horizontally along the roof 1a of the vehicle 1 and the front pillar 1b of the vehicle 1 with the front door 3 closed. Front side 3c extending forward along the road
And a rear side 3 extending vertically along a center pillar (not shown) of the vehicle 1 hidden by the front door 3 and the rear door 4.
d, and the visor 17 is attached from the upper side 3b to the front side 3c of the wind frame 3a.

The antenna 13 of the fifth embodiment shown in FIG. 6 is not shown in the figure because it is embedded by insert molding or the like when the visor 17 is manufactured.
The antenna 13 is covered with a material having pressure resistance and capable of securing required sensitivity as the antenna 13 after the visor 17 is completed.

According to the arrangement structure of the fifth embodiment, the visor 17 attached to the wind frame 3a of the front door 3 where there are no obstacles in the vicinity that hinder the transmission and reception of radio signals. Since the antenna 13 is buried in the antenna, the antenna 13 can be disposed with good communication sensitivity, and since the visor 17 is made of synthetic resin, the antenna does not heat up due to direct sunlight. 13 can be prevented from being adversely affected.

Further, according to the arrangement structure of the fifth embodiment, the antenna 13 is embedded inside the visor 17 and is not exposed to the outside in both the shape and the color. The antenna 13 can be disposed on the visor 17 without impairing both the shape and the color.

Next, the antenna arrangement structure of the transponder according to the sixth embodiment of the present invention will be described with reference to FIG. 7, which is an enlarged perspective view of the front door 3.

The sixth embodiment is different from the fifth embodiment in that the antenna 13 is embedded only in the front portion 17a of the visor 17, which is located substantially at the center of the vehicle 1 in the vertical direction. In other respects, the arrangement structure is the same as the arrangement structure of the fifth embodiment.

According to the arrangement structure of the sixth embodiment, the same effect as that of the arrangement structure of the fifth embodiment can be obtained.

According to the arrangement structure of the sixth embodiment,
A front portion 1 of a visor 17 extending forward and inclined along a front pillar 1b of the vehicle 1 with the front door 3 closed.
The antenna 13 is buried in the front part 17a located substantially in the middle of the antenna 7a. As a result, the antenna 13 also has a posture inclined forward of the vehicle 1 like the surface of the front part 17a of the visor 17. Therefore, when the vehicle 1 passes through the gate 21 of the toll gate 20, the antenna 13 is oriented toward the interrogator 30, so that the sensitivity of transmitting and receiving information signals to and from the interrogator 30 can be further improved.

Next, the antenna arrangement structure of the transponder according to the seventh embodiment of the present invention will be described with reference to FIG. 8, which is an enlarged perspective view of the front door 3.

In the seventh embodiment, the antenna 13 is coated with a material having water resistance and impact resistance and capable of securing the required sensitivity of the antenna 13, The visor 17 is attached using an adhesive or a pressure-sensitive adhesive sheet, and the antenna 13 is provided over the entire surface of the visor 17.

According to the arrangement structure of the seventh embodiment, similarly to the arrangement structure of the fifth embodiment, the front door 3 is free from obstacles in the vicinity that hinder transmission and reception of radio signals. Since the antenna 13 is attached to the visor 17 attached to the wind frame 3a, the antenna 13 can be arranged with good communication sensitivity, and the visor 17 is made of synthetic resin. In addition, heat generation due to direct sunlight does not occur, so that it is possible to prevent the antenna 13 from being adversely affected.

According to the arrangement structure of the seventh embodiment,
Since the visor 17 and the antenna 13 can be manufactured separately, the manufacturing or assembling cost can be suppressed at a low price, and the antenna 13 is connected to the visor 17.
, The antenna 13 can be removed from the visor 17 and replaced as a single unit in the event of a failure.

In addition, since the attachment target of the antenna 13 is the visor 17 made of synthetic resin, the antenna 13 is not provided with an adhesive or an adhesive sheet but with a metal fitting (not shown).
Even when the visor 17 is attached to the visor 17, this fitting does not cause inconvenience such as rust on the visor 17,
The antenna 1 has an advantageous condition in terms of the durability of the visor 17 as well.
3 can be attached.

Next, the antenna arrangement structure of the transponder for vehicle according to the eighth embodiment of the present invention will be described with reference to FIG. 9 which is an enlarged perspective view of the front door 3.

In the eighth embodiment, the antenna 13 is connected to the front portion 17 a of the visor 17.
A front portion 17a which is located substantially in the vertical direction of the vehicle 1;
The point that only the parts are attached is different from the arrangement structure of the seventh embodiment, and the other points are configured similarly to the arrangement structure of the seventh embodiment.

According to the arrangement structure of the eighth embodiment, the same effect as that of the arrangement structure of the seventh embodiment can be obtained.

According to the arrangement structure of the eighth embodiment,
A front portion 1 of a visor 17 extending forward and inclined along a front pillar 1b of the vehicle 1 with the front door 3 closed.
7a, the antenna 13 is attached to the front part 17a located substantially in the middle, and as a result, the antenna 13 is also inclined forward of the vehicle 1 like the surface of the front part 17a of the visor 17. Therefore, when the vehicle 1 passes through the gate 21 of the tollgate 20, the antenna 13 is oriented toward the interrogator 30 so that the transmission and reception sensitivity of the information signal with the interrogator 30 can be further improved. .

[0085]

As described above, according to the antenna arrangement structure of the transponder for vehicle according to the first aspect of the present invention, the antenna is provided on the vehicle, and is installed at the gate on the track on which the vehicle runs. An on-vehicle transponder that performs payment processing of a toll on the runway based on an information signal transmitted to and received from an interrogator, and an antenna arrangement used for wirelessly transmitting and receiving the information signal. Thus, the antenna is arranged in a door mirror case for holding a door mirror of the vehicle.

[0086] For this reason, there is no obstacle in the vehicle portion around the door mirror case that hinders the transmission and reception of information signals wirelessly with the interrogator at the gate on the runway. The antenna can be arranged under the sensitivity, and the following can be further realized.

First, since the door mirror case is generally formed by resin molding, the antenna may be adversely affected by high temperature due to direct sunlight as in the case where the antenna is attached to a metal vehicle part or component. In addition, the antenna can be disposed on the vehicle in an advantageous state in terms of durability.

Further, since the door mirror case made of resin is to be attached, even if metal fittings are used, there is no inconvenience such as generation of rust on the door mirror case, and the durability of the door mirror case to be attached is reduced. However, the antenna can be advantageously arranged in the vehicle.

Further, since the door mirror is indispensably provided regardless of the type of vehicle, the installation structure can be applied regardless of the type of vehicle by setting the antenna to be attached to the door mirror case. As a result, the versatility of the antenna arrangement structure can be improved.

Further, according to the antenna arrangement structure of the transponder for a vehicle according to the present invention, the antenna is embedded inside the door mirror case.

For this reason, since the antenna is buried inside the door mirror case, even when the antenna is arranged in the door mirror case, a shape that causes a sense of incongruity does not occur on the exterior of the door mirror case, and the shape is not sufficient. The design appearance of the door mirror case can be maintained without impairing it.

Further, as long as the door mirror case is not transparent or translucent, the buried antenna is not visible from the outside of the door mirror case, so that the design aesthetics of the door mirror case can be maintained even in color. be able to.

Further, according to the antenna arrangement structure of the transponder for vehicle according to the present invention, the antenna is mounted on the surface of the door mirror case.

For this reason, by attaching the antenna to the surface of the door mirror case, it is possible to manufacture the antenna and the door mirror case separately and attach them later, thereby reducing the manufacturing or assembly cost. , And the antenna can be replaced at the time of failure or the like.

Further, according to the antenna arrangement structure of the transponder for a vehicle according to the present invention, the antenna is provided between the surface of the door mirror case and the antenna with respect to the door mirror case. In this configuration, a pedestal having an attitude of is provided.

For this reason, even if the attitude of the surface portion of the door mirror case where the antenna is attached varies depending on the type of the vehicle or the like, it is possible to attach the antenna to the door mirror case with a good sensitivity. it can.

Further, according to the antenna arrangement structure of the transponder for a vehicle according to the present invention, the interrogator provided on the vehicle and installed at the gate on the track on which the vehicle runs is provided. An in-vehicle transponder that performs payment processing of a toll on the runway based on an information signal transmitted and received in the vehicle, wherein an antenna arrangement structure used to wirelessly transmit and receive the information signal, The antenna is arranged on the eaves member attached to the front door.

[0098] For this reason, the vehicle portion around the eaves member attached to the front door is an obstacle that may interfere with the transmission and reception of information signals wirelessly with the interrogator at the gate on the runway. Therefore, the antenna can be provided with good communication sensitivity, and the following can be further realized.

First, since the eaves member attached to the front door is generally formed by resin molding, high heat is generated by direct sunlight, such as when an antenna is attached to a metal vehicle part or component. The antenna can be arranged in the vehicle in an advantageous state in terms of durability without adversely affecting the antenna.

Furthermore, since the eaves member made of resin is to be attached, even if metal fittings are used, inconvenience such as rust does not occur on the eaves member, and the durability of the eaves member to be attached is reduced. However, the antenna can be advantageously arranged in the vehicle.

Further, since the front door to which the eaves member is attached is indispensably provided regardless of the type of vehicle, the antenna should be attached to the eaves member attached to the front door. Accordingly, the arrangement structure can be applied regardless of the type of vehicle, and the versatility as the arrangement structure of the antenna can be improved.

Further, according to the antenna arrangement structure of the transponder for a vehicle according to the present invention, the antenna is embedded in the eaves member.

Therefore, since the antenna is buried inside the eaves member attached to the front door, the eaves member has such a shape as to cause a sense of incongruity even when the antenna is disposed on the eaves member. It does not occur, and it is possible to maintain the aesthetic appearance of the eaves member in terms of its shape without impairing it.

Further, according to the antenna arrangement structure of the transponder for vehicle according to the present invention, the antenna is mounted on the surface of the eaves member.

For this reason, by mounting the antenna on the surface of the eaves member, it is possible to manufacture the antenna and the eaves member separately and to attach them later, thereby reducing the manufacturing or assembly cost. , And the antenna can be replaced at the time of failure or the like.

Further, according to the antenna arrangement structure of the transponder for a vehicle according to the present invention, the transponder is arranged along the front pillar of the vehicle with the front door closed. The eaves member has an inclined front portion that extends while being inclined with respect to the vertical direction, and the antenna is arranged at the inclined front portion.

For this reason, the track area in which the transponder transmits and receives information signals to and from the interrogator provided at the gate of the tollgate generally has a wide area corresponding to the signal transmission output and the reception sensitivity of the interrogator. Now, when the vehicle is located in front of the gate and traveling on the track, the information signal is transmitted and received in a state where the interrogator is located ahead in the traveling direction.

[0108] Therefore, among the eaves members, the antenna is arranged at an inclined front portion which is arranged along the front pillar of the vehicle with the front door closed and extends obliquely with respect to the vertical direction of the vehicle. By doing so, the antenna is oriented toward the interrogator when the vehicle is located in the lane area where the transponder transmits and receives information signals to and from the interrogator, and the transmission and reception sensitivity of the information signal is further improved. be able to.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a vehicle to which an antenna arrangement structure of a transponder for a vehicle according to the present invention is applied.

FIG. 2 is an enlarged vertical sectional view of the door mirror case of FIG. 1 showing an antenna arrangement structure of the vehicle-mounted transponder according to the first embodiment of the present invention.

FIG. 3 is an enlarged perspective view of the door mirror case of FIG. 1 showing an antenna arrangement structure of a transponder for a vehicle according to a second embodiment of the present invention.

FIG. 4 is an enlarged perspective view of the door mirror case of FIG. 1 showing an antenna arrangement structure of a transponder for a vehicle according to a third embodiment of the present invention.

FIG. 5 is an enlarged perspective view of the door mirror case of FIG. 1 showing an antenna arrangement structure of a transponder for vehicle according to a fourth embodiment of the present invention.

FIG. 6 is an enlarged perspective view of the front door of FIG. 1 showing an antenna arrangement structure of the transponder for a vehicle according to a fifth embodiment of the present invention.

FIG. 7 is an enlarged perspective view of the front door of FIG. 1 showing an antenna arrangement structure of an in-vehicle transponder according to a sixth embodiment of the present invention.

FIG. 8 is an enlarged perspective view of the front door of FIG. 1 showing an antenna arrangement structure of a transponder for a vehicle according to a seventh embodiment of the present invention.

FIG. 9 is an enlarged perspective view of the front door of FIG. 1 showing an antenna arrangement structure of an in-vehicle transponder according to an eighth embodiment of the present invention.

FIG. 10 is a perspective view of a tollgate constituting an entrance or an exit of a toll road through which a vehicle equipped with a transponder passes.

FIG. 11 is an explanatory diagram showing an arrangement of transponders inside the vehicle shown in FIG. 10;

FIG. 12 is an explanatory diagram showing an arrangement of transponders inside the vehicle shown in FIG. 10;

FIG. 13 is an explanatory diagram showing an arrangement of transponders inside the vehicle shown in FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle 1b Front pillar 5 Door mirror case 8 Answering device 10 Door mirror 13 Antenna 15 Pedestal 17 Visor (eave member) 17a Visor front (inclined front) 21 Gate 30 Interrogator

Claims (8)

[Claims] 1. An on-vehicle vehicle for performing payment processing of a toll on a runway based on an information signal transmitted / received to / from an interrogator provided at a gate on a runway on which the vehicle runs, provided on the vehicle. The transponder according to any one of claims 1 to 3, wherein the antenna is arranged in a door mirror case that holds a door mirror of the vehicle, wherein the antenna is used to transmit and receive the information signal wirelessly. Transponder antenna arrangement structure. 2. The antenna arrangement structure for a vehicle-mounted transponder according to claim 1, wherein said antenna is embedded inside said door mirror case. 3. The antenna arrangement structure for an in-vehicle transponder according to claim 1, wherein said antenna is mounted on a surface of said door mirror case. 4. The antenna of a transponder according to claim 3, wherein a pedestal for positioning the antenna in a predetermined posture with respect to the door mirror case is provided between a surface of the door mirror case and the antenna. Arrangement structure. 5. An on-vehicle vehicle for paying a toll on said lane based on an information signal transmitted / received to / from an interrogator provided at a gate on a lane on which the vehicle travels, provided on the vehicle. In the transponder, an antenna arrangement structure used for wirelessly transmitting and receiving the information signal, wherein the antenna is arranged on an eaves member attached to a front door of the vehicle, Antenna installation structure of the transponder for in-vehicle use. 6. The antenna arrangement structure for an in-vehicle transponder according to claim 5, wherein said antenna is buried inside said eaves member. 7. The antenna arrangement structure for an in-vehicle transponder according to claim 5, wherein said antenna is attached to a surface of said eaves member. 8. The eaves member has an inclined front portion that is disposed along a front pillar of the vehicle with the front door closed, and that extends inclining with respect to the vertical direction of the vehicle. 8. The antenna arrangement structure for a vehicle-mounted transponder according to claim 5, wherein said antenna is arranged at said inclined front part.