JP7150857B2 - Lean vehicle with vehicle-to-vehicle communication antenna - Google Patents

Description

The present invention relates to a lean vehicle equipped with an antenna for inter-vehicle communication.

Lean vehicles are equipped with different antennas for different uses. Examples of antennas mounted on lean vehicles include GPS antennas, ETC vehicle-mounted antennas, vehicle-to-vehicle communication antennas, and the like. The GPS antenna is a receiving antenna and receives radio waves from GPS communication satellites. Therefore, since the GPS antenna receives radio waves from the GPS communication satellites, the receiving surface is directed upward so that radio waves can be received from above. The ETC vehicle-mounted antenna is a transmitting/receiving antenna, and is provided so as to transmit/receive radio waves from an ETC antenna provided above an ETC gate on a road on which a lean vehicle travels. Therefore, the ETC vehicle-mounted antenna transmits and receives radio waves to and from the ETC antenna above the horizontal direction. For example, since an ETC on-vehicle antenna transmits and receives radio waves in a direction of 45 degrees or more with respect to the horizontal direction, it is installed so that the transmitting/receiving surface of the antenna faces upward when the lean vehicle is upright. Moreover, the directivity of the ETC vehicle-mounted antenna is narrow. This is because the ETC is used to charge lean vehicles traveling straight in the lane corresponding to each ETC gate.

On the other hand, the vehicle-to-vehicle communication antenna is a transmitting/receiving antenna for communicating with a vehicle different from the lean vehicle on which this antenna is mounted.
For example, the lean vehicle described in Patent Literature 1 includes a vehicle-to-vehicle communication device that communicates with vehicles existing around the lean vehicle. The vehicle-to-vehicle communication device includes an electrically connected antenna. The vehicle-to-vehicle communication antenna disclosed in Patent Document 1 is mounted on the front or rear portion of the vehicle.

WO2014/136658

When a vehicle-to-vehicle communication antenna is mounted on a lean vehicle as in the vehicle described in Patent Document 1, the transmission performance of the vehicle-to-vehicle communication antenna may change significantly when the vehicle is traveling straight ahead and turning. rice field.

SUMMARY OF THE INVENTION The present invention provides a lean vehicle equipped with an inter-vehicle communication antenna capable of suppressing a change in transmission performance of inter-vehicle communication depending on whether the lean vehicle is traveling straight or turning.

A vehicle-to-vehicle communication antenna is an antenna for communicating with a vehicle, unlike a GPS antenna or an ETC vehicle-mounted antenna. A vehicle-to-vehicle communication antenna is installed in a lean vehicle so as to transmit radio waves in a horizontal direction in order to transmit radio waves to vehicles on the road around the lean vehicle. In addition, since the vehicle-to-vehicle communication antenna transmits radio waves to vehicles traveling around the lean vehicle, it is required to transmit in a wide angular range in the horizontal plane.
In addition, the vehicle-to-vehicle communication antenna supports communication in a lean posture, and communication in the front-rear direction when crossing a peak on the boundary between an uphill and a downhill, for example, so it transmits above and below the horizontal direction. Required to be included in the scope. Above and below the horizontal direction is, for example, a range of 45 degrees above and below the horizontal direction. Therefore, the vehicle-to-vehicle communication antenna differs from antennas such as GPS antennas and ETC antennas in the transmission direction and directivity of radio waves.
In vehicle-to-vehicle communication, a vehicle to be communicated with is normally on the road as well as the own vehicle. The vehicle-to-vehicle communication antenna is located at approximately the same height as the lean vehicle on which the antenna is mounted, and mainly communicates with a vehicle located away from the lean vehicle. In a lean vehicle equipped with an inter-vehicle communication antenna, transmission/reception performance of inter-vehicle communication changes depending on whether the vehicle is traveling straight ahead or turning. In particular, in a lean vehicle, the transmission/reception performance of inter-vehicle communication greatly changes in the turning state. Therefore, the present inventors have made detailed studies on the communication state of vehicle-to-vehicle communication in a lean vehicle turning state.

It was found that the performance of vehicle-to-vehicle communication with vehicles existing in front and to the left of the lean vehicle is lower during left turns than during straight running. The region where the communication performance deteriorates during a left turn is the region above the horizontal plane passing through the vehicle-to-vehicle communication antenna and to the left of the vertical plane passing through the vehicle-to-vehicle communication antenna when the vehicle is leaning upright. Moreover, it has been found that there is a tendency for the distance to decrease leftward from the vertical plane passing through the vehicle-to-vehicle communication antenna in the upright state of the lean vehicle.

It was found that the performance of vehicle-to-vehicle communication with a vehicle existing in front of and to the right of the lean vehicle deteriorates during right turning compared to straight running. The region where the communication state deteriorates during a right turn is the region above the horizontal plane passing through the vehicle-to-vehicle communication antenna and to the right of the vertical plane passing through the vehicle-to-vehicle communication antenna when the vehicle is leaning upright. Moreover, it was found that there is a tendency that the distance from the vertical plane passing through the vehicle-to-vehicle communication antenna in the upright state of the lean vehicle tends to decrease toward the right.

As a result, if the vehicle-to-vehicle communication antenna mounted on the front part of the lean vehicle is configured as follows, it is possible to suppress the change in transmission/reception performance of vehicle-to-vehicle communication that depends on the difference between when the lean vehicle is traveling straight ahead and when it is turning. found that it can be done. That is, the present invention provides a lighting device (headlight or taillight) that is installed at a position higher than the lean wheel without obstacles in the light irradiation direction (that is, the front or rear direction) in inter-vehicle communication. use the arrangement of According to the present invention, the communication direction of vehicle-to-vehicle communication is to mainly communicate with a vehicle that is positioned away from the vehicle in the forward direction or the rearward direction at approximately the same height as the vehicle, and the direction of light irradiation by the lamp. take advantage of the commonality of

(1) A lean vehicle equipped with an antenna for vehicle-to-vehicle communication,
Lean vehicles equipped with vehicle-to-vehicle communication antennas
a lean vehicle body that leans leftward during a left turn and leans rightward during a right turn;
a lean wheel having a ground contact portion having a substantially arcuate cross-sectional contour shape, provided on the lean vehicle body, and tilting leftward during left turning and tilting rightward during right turning;
a light source that emits light toward the front or rear of the lean vehicle equipped with an inter-vehicle communication antenna; and a light body that supports the light source and is supported by the lean vehicle body; A lamp provided at the part or the rear end,
a vehicle-to-vehicle communication device provided in the lean vehicle body and used for vehicle-to-vehicle communication with vehicles existing around the lean vehicle body;
It is electrically connected to the vehicle-to-vehicle communication device, tilts leftward or rightward integrally with the lean vehicle body, is positioned above the upper end of the lean wheel, and is in the same direction as the lighting device. A vehicle-to-vehicle communication antenna provided in the lamp body of the lamp so as to communicate in a direction or substantially the same direction, and for transmitting radio waves at least forward or rearward of a lean vehicle equipped with at least the vehicle-to-vehicle communication antenna. When,
Prepare.

The vehicle-to-vehicle communication antenna is provided on the lighting body so as to communicate in the same direction or substantially the same direction as the direction in which light is emitted from the lamp. There are no obstacles in the front or rear direction of the lamp to suppress the emission of radio waves. Therefore, the lean vehicle body has little effect on communication performance. Further, the vehicle-to-vehicle communication antenna is provided on the lamp above the upper end of the lean wheel. Accordingly, the vehicle-to-vehicle communication antenna is arranged at a relatively high position near the center in the vehicle width direction. Therefore, even if the height of the vehicle-to-vehicle communication antenna decreases during turning, the height of the vehicle-to-vehicle communication antenna remains high in the straight running state and in the turning state. As described above, it is possible to suppress the change in the transmission/reception performance of the vehicle-to-vehicle communication that depends on the difference between when the lean vehicle equipped with the vehicle-to-vehicle communication antenna is traveling straight ahead and when it is turning.

In the vehicle-to-vehicle communication of a lean vehicle equipped with an antenna for vehicle-to-vehicle communication, the present invention adjusts the transmission performance between a straight running state and a turning state by arranging lamps and arranging the antennas using the light irradiation direction. This is the first invention made possible by the unprecedented technical concept of suppression.

(2) The lean vehicle equipped with an inter-vehicle communication antenna of (1),
The vehicle-to-vehicle communication antenna includes a plate-shaped resin substrate and a planar metal antenna section provided on the resin substrate.

The vehicle-to-vehicle communication antenna is not particularly limited, and a configuration other than the above (2) can be adopted. For example, the vehicle-to-vehicle communication antenna may be a rod-shaped antenna.

(3) The lean vehicle equipped with an inter-vehicle communication antenna of (1) or (2),
The vehicle-to-vehicle communication antenna is arranged so that the vehicle-to-vehicle communication antenna and the metal member do not overlap partially or wholly when viewed from the vehicle-to-vehicle communication antenna in the direction in which light is emitted from the lamp. , is provided.

In the configuration of (3), when the lighting device is a headlight, when viewed from the vehicle-to-vehicle communication antenna in the direction of light emitted by the headlight, the vehicle-to-vehicle communication antenna and the metal members shall not partially or wholly overlap with each other. When the lighting device is a taillight, when viewed from the vehicle-to-vehicle communication antenna in the light irradiation direction of the taillight, the vehicle-to-vehicle communication antenna and the metal member are partially or wholly behind the taillight. do not overlap. Thereby, the communication performance of the antenna can be exhibited better, and the communication performance can be further improved.

(4) A lean vehicle equipped with an inter-vehicle communication antenna according to any one of (1) to (3),
The vehicle-to-vehicle communication antenna is provided on the light body so as to overlap the light body wholly or partially when the lean vehicle equipped with the vehicle-to-vehicle communication antenna in an upright state is viewed in the front-rear direction. .

When the lighting device is a headlight, the vehicle-to-vehicle communication antenna fully or partially overlaps the lamp body of the headlight when the lean vehicle equipped with the vehicle-to-vehicle communication antenna in an upright state is viewed in the front-rear direction. is provided on the lamp body. When the lighting device is a taillight, the vehicle-to-vehicle communication antenna fully or partially overlaps with the lamp body of the taillight when the lean vehicle equipped with the vehicle-to-vehicle communication antenna in an upright state is viewed in the front-rear direction. is provided on the lamp body. A compact arrangement can be realized for the entire lamp including the vehicle-to-vehicle communication antenna. Even if the vehicle-to-vehicle communication antenna is installed at a position where the vehicle-to-vehicle communication antenna receives the running wind, it is possible to suppress or prevent the installation of the vehicle-to-vehicle communication antenna from affecting the running performance.

(5) A lean vehicle equipped with an inter-vehicle communication antenna according to any one of (1) to (4),
The vehicle-to-vehicle communication antenna is connected to the antenna wire at a position where the vehicle-to-vehicle communication antenna-equipped lean vehicle in an upright position is viewed in the front-rear direction so as to overlap the lamp body of the lighting device wholly or partially. is configured as

When the lean vehicle equipped with the vehicle-to-vehicle communication antenna in an upright state is viewed in the front-rear direction, the connection position between the vehicle-to-vehicle communication antenna and the antenna wire overlaps wholly or partially with the lamp body of the lamp. . A compact arrangement of the lamp as a whole can be achieved. Even if the vehicle-to-vehicle communication antenna is installed at a position where the vehicle-to-vehicle communication antenna receives the running wind, it is possible to suppress or prevent the installation of the vehicle-to-vehicle communication antenna from affecting the running performance.

(6) A lean vehicle equipped with an inter-vehicle communication antenna according to any one of (1) to (5),
The vehicle-to-vehicle communication antenna is configured so that an antenna wire is projected from the vehicle-to-vehicle communication antenna in a direction opposite to the direction of light irradiation from the lamp in the longitudinal direction of the lean vehicle equipped with the vehicle-to-vehicle communication antenna. It is configured.

When the vehicle-to-vehicle communication antenna is provided in the headlight, the antenna wire extends in the opposite direction (rear direction) to the direction of light emitted from the headlight (forward direction). When the vehicle-to-vehicle communication antenna is provided in the taillight, the antenna wire extends in the opposite direction (forward direction) to the light irradiation direction (rearward direction) of the taillight. A compact arrangement of the lamp as a whole can be realized. Even if the vehicle-to-vehicle communication antenna is installed at a position where the vehicle-to-vehicle communication antenna receives the running wind, it is possible to suppress or prevent the installation of the vehicle-to-vehicle communication antenna from affecting the running performance.

(7) The lean vehicle equipped with an inter-vehicle communication antenna of (6),
The vehicle-to-vehicle communication antenna is configured such that an antenna wire is protruded from a position close to and different from the coupler of the lamp.

A compact arrangement of the lamp as a whole can be realized. Even if the vehicle-to-vehicle communication antenna is installed at a position where the vehicle-to-vehicle communication antenna receives the running wind, it is possible to suppress or prevent the installation of the vehicle-to-vehicle communication antenna from affecting the running performance.

(8) The lean vehicle equipped with an inter-vehicle communication antenna of (7),
The vehicle-to-vehicle communication antenna is configured such that the antenna wire extends from a position where the wiring work of the lighting device can be performed from the same direction as the wiring work of the vehicle-to-vehicle communication antenna.

The vehicle-to-vehicle communication antenna is configured, for example, so that the antenna wire extends from a position where both the wiring work of the headlight and the wiring work of the vehicle-to-vehicle communication antenna can be performed from the rear. The vehicle-to-vehicle communication antenna is configured, for example, so that the antenna wire extends from a position where both the wiring work of the tail light and the wiring work of the vehicle-to-vehicle communication antenna can be performed from the front. Efficiency of assembly work is improved. A more compact arrangement can also be realized.

(9) A lean vehicle equipped with an inter-vehicle communication antenna according to any one of (1) to (8),
The vehicle-to-vehicle communication antenna is provided on the lamp body so that the upper end of the vehicle-to-vehicle communication antenna is located above the light source of the lamp in the lean vehicle equipped with the vehicle-to-vehicle communication antenna in an upright state. be done.

Communication performance can be further improved, and a change in transmission performance of inter-vehicle communication, which depends on the difference between a lean vehicle equipped with an inter-vehicle communication antenna, traveling straight ahead and turning, can be suppressed more effectively.

(10) A lean vehicle equipped with an inter-vehicle communication antenna according to any one of (1) to (9),
The lighting device is a left and right dual headlight,
The left and right dual headlight includes a left light source and a right light source spaced apart from each other in the vehicle width direction,
The vehicle-to-vehicle communication antenna is partially or wholly located between the left light source and the right light source in the vehicle width direction in the lean vehicle equipped with the vehicle-to-vehicle communication antenna in an upright state. It is provided so as to be positioned

To realize a more compact arrangement of lighting equipment as a whole, and to more effectively suppress changes in transmission performance of vehicle-to-vehicle communication depending on the difference between a lean vehicle equipped with an antenna for vehicle-to-vehicle communication and traveling straight ahead and turning. can be done.

The terminology used herein is for the purpose of defining particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed constructs. As used herein, the use of the terms "including," "comprising," or "having," and variations thereof, refers to the described features, steps, operations, While specifying the presence of elements, components and/or their equivalents, it can include one or more of steps, actions, elements, components and/or groups thereof. As used herein, the terms "attached", "connected", "coupled" and/or their equivalents are used broadly to refer to direct and indirect attachment, connection and includes both bindings. Furthermore, "connected" and "coupled" are not limited to physical or mechanical connections or couplings, but can include direct or indirect electrical connections or couplings. Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be construed to have a meaning consistent with their meaning in the context of the relevant technology and this disclosure, and are expressly defined herein. not be construed in an ideal or overly formal sense unless explicitly stated. In describing the invention, it is understood that a number of techniques and steps are disclosed. Each of these has individual benefits, and each can also be used with one or more, or possibly all, of the other disclosed techniques. Therefore, for the sake of clarity, this description refrains from unnecessarily repeating all possible combinations of individual steps. Nevertheless, the specification and claims should be read with the understanding that all such combinations are within the scope of the invention and claims.

In this specification, a lean vehicle equipped with an antenna for inter-vehicle communication will be described. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be obvious to those skilled in the art that the present invention may be practiced without these specific details. The present disclosure should be considered exemplary of the invention and is not intended to limit the invention to the specific embodiments illustrated by the following drawings or description.

The lamp is, for example, a headlight. The headlights illuminate the traveling direction of the lean vehicle. The lamp is, for example, a tail light. The tail light illuminates in the direction opposite to the traveling direction of the lean vehicle. A lamp includes a lamp body and a light source. The lamp body supports the light source. A lamp body is, for example, a light case that houses a light source. The lamp body may house a reflector. Also, the reflector may constitute a part of the lighting body. The lamp body may contain parts of the headlight other than the light source and reflector. The lamp body is, for example, non-metallic. The non-metal lamp body is made of resin, for example. The light source is composed of a light emitter. The light emitter may be an LED or an incandescent lamp. The lamp may have a metal member. The metal member constitutes the reflector of the lamp. The reflector is configured to irradiate the light emitted from the light source in a limited direction. If the lamp has a reflector, the lamp supports the light source and the reflector. The lamp body houses the parts responsible for the function of the lamp. However, part of the lamp body may be composed of a reflector. The vehicle-to-vehicle communication antenna may be housed inside the lamp together with the part that performs the function of the lamp. However, the vehicle-to-vehicle communication antenna may be provided outside the lamp.

A lean vehicle is an example of a vehicle that turns in a lean posture according to the present invention. In the present invention, the vehicle that turns in a lean posture is not particularly limited, and examples thereof include straddle-type vehicles such as motorcycles, tricycles, snowmobiles, and ATVs (all terrain vehicles). In the following description, "front and back" is based on the traveling direction of the vehicle, "vertical" is based on the vertical direction of the vehicle, and "left and right" is based on the driver.

A lean vehicle is a vehicle that runs with its body leaning when turning. Lean vehicles may be, for example, motorcycles, tricycles and quadricycles. The lean vehicle may be, for example, a straddle-type vehicle.

A lean body is the body portion of a lean vehicle. The lean vehicle body leans when the lean vehicle turns. The lean vehicle body leans rightward when the lean vehicle turns right, and leans leftward when the lean vehicle turns left.

A vehicle-to-vehicle communication device is a device that communicates with surrounding vehicles by exchanging radio waves. However, the vehicle-to-vehicle communication device is not limited to the function of communicating with a vehicle, and may have the function of communicating with a device other than the vehicle in addition to the vehicle. A vehicle-to-vehicle communication device is, for example, a device for notifying surrounding vehicles of the position of one's own vehicle and acquiring relative or absolute positions of surrounding vehicles. The vehicle-to-vehicle communication device also exchanges information such as the speed, acceleration, direction of the vehicle, and yaw rate with surrounding vehicles.

The vehicle-to-vehicle communication antenna is an antenna that exchanges radio waves with surrounding vehicles. However, the vehicle-to-vehicle communication antenna is not limited to the function of exchanging radio waves with the vehicle, and may have the function of exchanging radio waves with a device other than the vehicle in addition to the vehicle. The vehicle-to-vehicle communication antenna may be a directional (directional) antenna or a non-directional (omnidirectional) antenna. The vehicle-to-vehicle communication antenna may be an antenna including, for example, a plate-shaped resin substrate and a planar metal antenna section provided on the resin substrate. Moreover, a rod-shaped antenna may be used.

The metal member is a member that interferes with radio waves transmitted and received by the antenna. Metal members include, for example, members covered with resin. Also, the metal member includes, for example, a resin member having a metal vapor-deposited on its surface.

According to the present invention, it is possible to provide a lean vehicle equipped with a vehicle-to-vehicle communication antenna capable of suppressing a change in the transmission/reception performance of vehicle-to-vehicle communication that depends on the difference between when the lean vehicle is traveling straight ahead and when it is turning. .

It is a side view showing lean vehicle 1 concerning one embodiment of the present invention. FIG. 2 is a partially enlarged front view showing the lean vehicle shown in FIG. 1; FIG. 2 is a partially enlarged rear view showing the lean vehicle shown in FIG. 1; FIG. 3 is a partially enlarged front view showing still another example of the arrangement of the vehicle-to-vehicle communication antennas of the lean vehicle shown in FIG. 1; 2 is a partially enlarged front view showing still another example of the arrangement of the vehicle-to-vehicle communication antennas of the lean vehicle 1 shown in FIG. 1. FIG. FIG. 3 is a partially enlarged side view showing still another example of the arrangement of the vehicle-to-vehicle communication antennas of the lean vehicle shown in FIG. 1; FIG. 2 is a front view showing the position of an inter-vehicle communication antenna of the lean vehicle shown in FIG. 1; FIG. 2 is a rear view showing the position of an inter-vehicle communication antenna of the lean vehicle shown in FIG. 1; FIG. 2 is a front view showing a radio wave radiation area in the vehicle width direction of the vehicle-to-vehicle communication antenna of the lean vehicle shown in FIG. 1 ;

FIG. 1 is a side view showing a lean vehicle 1 according to one embodiment of the invention. A lean vehicle 1 of FIG. 1 includes a lean vehicle body 2, lean wheels 3, a headlight 6, a taillight 7, a vehicle-to-vehicle communication device 8, and an antenna 9 for vehicle-to-vehicle communication. A lean vehicle 1 shown in FIG. 1 is a lean vehicle equipped with an inter-vehicle communication antenna. The lean vehicle 1 in FIG. 1 is, for example, a motorcycle.

The lean vehicle body 2 includes a body portion 4 and a handle portion 5 . The lean wheel 3 is composed of a front wheel 3a and a rear wheel 3b. The handle portion 5 is provided with a front wheel 3a. The handle portion 5 includes a front fork 50 and a steering handle 51 .

A handle portion 5 of the lean vehicle body 2 is rotatably attached to the body portion 4 . The front fork 50 includes two fork pipes 52a and 52b, a handlebar bracket 53, and an underbracket . The upper ends of the two fork pipes 52a and 52b are connected by a handle bracket 53, and a portion between the upper and lower ends of the two fork pipes 52a and 52b is connected by an under bracket . The front wheel 3a is rotatably supported at the lower ends of the two fork pipes 52a and 52b. The steering handle 51 is attached to the handle bracket 53 . The handlebar bracket 53 and the underbracket 54 are connected by a steering shaft 55 . The steering shaft 55 is inserted through the steering head pipe 42 of the main body 4 . The steering shaft 55 is rotatable within the steering head pipe 42 . As a result, the handle portion 5 can rotate around the steering shaft 55 with respect to the main body portion 4 .

A body portion 4 of the lean vehicle body 2 is provided with a rear wheel 3b. The body portion 4 includes an engine 41 . The engine 41 is controlled by an accelerator grip 56 attached to the steering handle 51 of the handle portion 5, and transmits driving force to the rear wheels 3b via the transmission 43 and the like. The lean vehicle 1 can travel when the rider operates the accelerator grip 56 .

A front wheel 3a provided on the handle portion 5 of the lean vehicle body 2 and a rear wheel 3b provided on the main body portion 4 have a ground contact portion having a substantially arcuate cross-sectional contour shape. The lean vehicle 1 can be turned by the operation of the steering handle 51 by the passenger. The lean vehicle 1 turns to the right when the passenger turns the steering handle 51 to the right, and turns to the left when the passenger turns the steering handle 51 to the left. During left turning, the lean vehicle body 2 leans leftward, and during right turning, the lean vehicle 1 leans rightward. The front wheels 3a and the rear wheels 3b incline leftward while the lean vehicle 1 is turning left, and incline rightward while the lean vehicle 1 is turning right.

The headlight 6 is a lighting device for the lean vehicle 1 . The headlamp 6 includes a light source 61 and a lamp body 62 . The lamp body 62 supports the light source 61 and is supported by the lean vehicle body. The lamp body 62 houses the parts of the lamp. The lamp body 62 does not contain any parts other than the lamp. The light source 61 emits light toward the front of the lean vehicle 1 . The headlamp 6 is supported on the front end portion of the lean vehicle body 2 . Specifically, the lamp body 62 is installed in front of the steering head pipe 42 through which the steering shaft 55 is inserted. The lamp body 62 is positioned at the central portion of the lean vehicle 1 in the vehicle width direction.

The taillight 7 is a lighting device for the lean vehicle 1 . The taillight 7 includes a light source 71 and a lamp body 72 . The lamp body 72 supports the light source 71 and is supported by the lean vehicle body. The light source 71 emits light toward the rear of the lean vehicle 1 . The taillight 7 is supported by the body portion 4 of the lean vehicle body 2 . Specifically, the lamp body 72 is installed near the rear end portion of the main body portion 4 . The lamp body 62 is positioned at the central portion of the lean vehicle 1 in the vehicle width direction.

The vehicle-to-vehicle communication device 8 is provided at any position on the body portion 4 of the lean vehicle body 2 . FIG. 1 shows the electrical connection between the vehicle-to-vehicle communication antenna 9 and the vehicle-to-vehicle communication device 8 . The vehicle-to-vehicle communication device 8 is used for vehicle-to-vehicle communication with vehicles existing around the lean vehicle 1 via a vehicle-to-vehicle communication antenna 9 . By arranging the vehicle-to-vehicle communication antenna 9 as described below, the vehicle-to-vehicle communication device 8 is arranged so that during a left turn when the lean vehicle body 2 is tilted to the left and during a right turn when the lean vehicle body is tilted to the right. It is possible to perform inter-vehicle communication at

The vehicle-to-vehicle communication antenna 9 transmits radio waves at least forwardly or rearwardly of the lean vehicle 1 . The vehicle-to-vehicle communication antenna 9 of this embodiment also receives radio waves. The vehicle-to-vehicle communication antenna 9 is electrically connected to the vehicle-to-vehicle communication device 8 by an antenna wire. The vehicle-to-vehicle communication antenna 9 may be a directional (directional) antenna or may be a non-directional (omnidirectional) antenna. The vehicle-to-vehicle communication antenna 9 includes, for example, a plate-shaped resin substrate and a planar metal antenna section provided on the resin substrate. The vehicle-to-vehicle communication antenna 9 inclines leftward or rightward integrally with the lean vehicle body 2 .

The vehicle-to-vehicle communication antenna 9 is arranged so as to radiate radio waves at least horizontally. The vehicle-to-vehicle communication antenna 9 has radiation areas obliquely upward and obliquely downward with respect to the radio wave radiation direction (in this embodiment, for example, radiation areas at least 45 degrees above and below the horizontal direction). Therefore, when the lean vehicle body 2 leans rightward or leftward during turning, the vehicle-to-vehicle communication antenna 9 can maintain horizontal directivity with respect to the ground. That is, when the lean vehicle body 2 leans rightward or leftward, the vehicle-to-vehicle communication antenna 9 can radiate radio waves in the horizontal direction. For example, when the vehicle-to-vehicle communication antenna 9 includes a plate-shaped resin substrate and a planar metal antenna portion provided on the resin substrate, the vehicle-to-vehicle communication antenna 9 is positioned with respect to the ground. The resin substrate is arranged substantially vertically so that radio waves can be radiated in the horizontal direction. As a result, the vehicle-to-vehicle communication antenna 9 can maintain the directivity of the vehicle-to-vehicle communication antenna 9 in the horizontal plane with respect to the ground when the lean vehicle body 2 is tilted rightward or leftward during turning. Further, the vehicle-to-vehicle communication antenna 9 may be a rod-shaped antenna. When the vehicle-to-vehicle communication antenna 9 is a rod-shaped antenna, the vehicle-to-vehicle communication antenna 9 is arranged such that the rod-shaped portion is substantially vertically erected so that radio waves can be radiated horizontally with respect to the ground. be. As a result, the vehicle-to-vehicle communication antenna 9 can maintain directivity in the horizontal plane with respect to the ground when the lean vehicle body 2 is tilted to the right or left. A substantially vertical standing arrangement is, for example, one in which the substrate or rod is arranged at an angle of less than 45 degrees to the vertical. The vehicle-to-vehicle communication antenna 9 is provided so that the vehicle-to-vehicle communication antenna 9 and the metal member do not overlap partially or wholly when viewed from the vehicle-to-vehicle communication antenna 9 in the forward direction of the lean vehicle body 2 . ing.

The vehicle-to-vehicle communication antenna 9 is provided on the lamp body 62 of the headlight 6 and/or the lamp body 72 of the taillight 7 . Specifically, the vehicle-to-vehicle communication antenna 9 is provided on the lamp body 62 so as to entirely or partially overlap the headlamp 6 when the lean vehicle 1 in an upright state is viewed in the front-rear direction. The vehicle-to-vehicle communication antenna 9a is provided on the light body 72 so as to overlap the tail light 7 wholly or partially when the lean vehicle 1 in an upright state is viewed in the longitudinal direction. When the vehicle-to-vehicle communication antenna 9 is provided in the lamp body 62 of the headlamp 6 (vehicle-to-vehicle communication antenna 9a), the vehicle-to-vehicle communication antenna 9a is arranged in the same direction as the direction in which light is emitted from the headlamp 6 or The lamp bodies 62 of the headlamps 6 are provided so as to communicate in substantially the same direction. At this time, the vehicle-to-vehicle communication antenna 9a is arranged above the upper end of the front wheel 3a. Further, when the vehicle-to-vehicle communication antenna 9 is provided on the lamp body 72 of the taillight 7 (vehicle-to-vehicle communication antenna 9b), the vehicle-to-vehicle communication antenna 9b is arranged in the same direction as the light irradiation direction of the taillight 7 or substantially is provided in the lamp body 72 of the tail lamp 7 so as to communicate in the same direction as the two. At this time, the vehicle-to-vehicle communication antenna 9b is arranged above the upper end of the rear wheel 3b.

There is no obstacle in front of the headlamp 6. - 特許庁Therefore, when the vehicle-to-vehicle communication antenna 9a is provided in the lamp body 62 so as to communicate in the same direction or substantially the same direction as the direction in which light is emitted from the headlamp 6, the lean vehicle body 2 affects the communication performance. Less is. Similarly, there is no obstacle behind the taillight 7 . Therefore, when the vehicle-to-vehicle communication antenna 9b is provided in the light body 72 so as to communicate in the same direction or substantially the same direction as the light irradiation direction of the tail light 7, the lean vehicle body 2 has little effect on the communication performance. . Further, the vehicle-to-vehicle communication antenna 9a is provided in the lamp body 62 of the headlight 6 arranged above the upper end of the front wheel 3a in the vertical direction of the lean vehicle 1, and the vehicle-to-vehicle communication antenna 9b is provided for the lean vehicle. It is provided in the lamp body 72 of the tail lamp 7 arranged above the upper end of the rear wheel 3b in the vertical direction of the vehicle 1. Accordingly, the vehicle-to-vehicle communication antennas 9a and 9b are arranged at relatively high positions near the center in the vehicle width direction. Therefore, it is difficult for the height of the vehicle-to-vehicle communication antenna to decrease when turning, and a change in the height of the vehicle-to-vehicle communication antenna between the straight running state and the turning state can be suppressed. As described above, it is possible to suppress the change in the transmission/reception performance of the vehicle-to-vehicle communication that depends on the difference between when the lean vehicle 1 is traveling straight and when it is turning.

FIG. 2 is a partially enlarged front view showing the lean vehicle 1 shown in FIG. As shown in FIG. 2, the headlight 6 is a left and right dual headlight. The headlamp 6 includes a left light source 61a and a right light source 61b which are arranged on the lamp body 62 with a space therebetween in the vehicle width direction. The lamp body 62 houses the parts of the lamp. The lamp body 62 does not contain any parts other than the lamp and the antenna. The left light source 61a and the right light source 61b are composed of a high beam light source (running headlight) and a low beam light source (passing headlight). The high beam light source illuminates in the horizontal direction or above the horizontal direction with respect to the forward direction of the lean vehicle 1 . The low-beam light source illuminates below the horizontal direction with respect to the forward direction of the lean vehicle. Light from the left light source 61a passes through the left lens 67a and is illuminated. Light from the right light source 61b passes through the right lens 67b and is illuminated.

The vehicle-to-vehicle communication antenna 9a is provided on the lamp body 62 so as to entirely or partially overlap the headlamp 6 when the lean vehicle 1 in an upright state is viewed in the longitudinal direction. Specifically, at least part of the vehicle-to-vehicle communication antenna 9 is housed in the lamp body 62 of the headlamp 6 . Further, the vehicle-to-vehicle communication antenna 9a is provided so as to be partially or wholly positioned between the left light source 61a and the right light source 61b in the vehicle width direction in the lean vehicle 1 in an upright state. The vehicle-to-vehicle communication antenna 9a is provided on the lamp body 62 so that the upper end thereof is located above the left light source 61a and the right light source 61b of the headlamp 6. As shown in FIG. Further, the vehicle-to-vehicle communication antenna 9a is arranged to avoid the position where the left light source 61a and the right light source 61b of the lamp body 62 are arranged. That is, the vehicle-to-vehicle communication antenna 9a is arranged outside the range that can be seen through the lenses 67a and 67b when the headlamp 6 is viewed forward. The lenses 67a and 67b refract and irradiate the light from the light sources 61a and 61b. A cover 63 that covers the lamp body 62 is provided on the front surface of the lamp body 62 . The cover 63 is made of translucent material. Cover 63 simply allows light from light sources 61a and 61b to pass through.

By arranging the vehicle-to-vehicle communication antenna 9a as shown in FIG. 2, a compact arrangement of the vehicle-to-vehicle communication antenna 9a for the entire headlight 6 including the vehicle-to-vehicle communication antenna 9 can be realized. Further, the vehicle-to-vehicle communication antenna 9a is less susceptible to wind pressure. Further, the vehicle-to-vehicle communication antenna 9 and the vehicle-to-vehicle communication antenna 9a are not visible from the outside of the lean vehicle 1, and the design does not impair the appearance characteristics of the lean vehicle. Furthermore, since the vehicle-to-vehicle communication antenna 9a is provided near the center of the lean vehicle body 2 in the vehicle width direction, the radio wave radiation area of the vehicle-to-vehicle communication antenna 9a is not biased to the left and right, and communication can be ensured. In addition, in this embodiment, the number of the light sources 61 may be one. Further, there may be a plurality of vehicle-to-vehicle communication antennas 9a.

In FIG. 2, the vehicle-to-vehicle communication antenna 9a is connected to the antenna wire at a position where it overlaps the lamp bodies 62 of the headlights 6 wholly or partially when the lean vehicle 1 in an upright state is viewed in the longitudinal direction. is configured as follows. With such an arrangement, a compact arrangement of the vehicle-to-vehicle communication antenna 9a can be realized for the headlamp 6 as a whole. Further, even if the vehicle-to-vehicle communication antenna 9a is provided at a position where the vehicle-to-vehicle communication antenna 9a receives the running wind, it is possible to prevent the vehicle-to-vehicle communication antenna 9a from affecting the running performance. In addition, the vehicle-to-vehicle communication antenna 9a has an antenna wire that extends from the vehicle-to-vehicle communication antenna 9a in the direction opposite to the direction in which light is emitted from the headlamp 6, that is, in the longitudinal direction of the lean vehicle 1. It is configured to exit in the rearward direction. At this time, the antenna wire of the vehicle-to-vehicle communication antenna 9 a may be bundled with the cable of the light source 61 so as to extend from the lamp body 62 . Further, the antenna wire of the vehicle-to-vehicle communication antenna 9a may be configured to extend from the lamp body 62 separately from the cable of the light source 61 . Further, the vehicle-to-vehicle communication antenna 9 is configured such that the antenna wire is protruded from a position close to the coupler of the headlamp 6 and different from the coupler. The vehicle-to-vehicle communication antenna 9 is configured so that the antenna wire extends from a position where the wiring work of the headlight 6 and the wiring work of the vehicle-to-vehicle communication antenna 9a can be performed from the same direction. This improves the efficiency of the assembly work of the vehicle-to-vehicle communication antenna 9a. Also, a compact arrangement of the vehicle-to-vehicle communication antenna 9a can be achieved.

FIG. 3 is a partially enlarged rear view showing the lean vehicle 1 shown in FIG. As shown in FIG. 3 , the taillight 7 includes a light source 71 arranged in a lamp body 72 . The lamp body 72 houses the parts of the lamp. The lamp 72 does not contain any parts other than the lamp and the antenna. The vehicle-to-vehicle communication antenna 9b is provided on the light body 72 so as to entirely or partially overlap the tail light 7 when the lean vehicle 1 in an upright state is viewed in the front-rear direction. Specifically, at least a portion of the vehicle-to-vehicle communication antenna 9 is housed in the lamp body 72 of the taillight 7 . Further, the vehicle-to-vehicle communication antenna 9 b is provided on the lamp body 72 so that the upper end thereof is located above the light source 71 of the tail light 7 . Further, the vehicle-to-vehicle communication antenna 9b is arranged to avoid the position where the light source 71 of the lamp body 72 is arranged. A rear portion of the light body 72 in the longitudinal direction of the lean vehicle 1 is covered with a cover.

By arranging the vehicle-to-vehicle communication antenna 9b as shown in FIG. 3, a compact arrangement of the vehicle-to-vehicle communication antenna 9b can be realized for the entire taillight 7 including the vehicle-to-vehicle communication antenna 9b. Further, the vehicle-to-vehicle communication antenna 9b is less susceptible to wind pressure. Further, the vehicle-to-vehicle communication antenna 9b is not visible from the outside of the lean vehicle 1, and does not impair the appearance characteristics of the lean vehicle 1 in terms of design. Furthermore, since the vehicle-to-vehicle communication antenna 9b is provided near the center of the lean vehicle body 2 in the vehicle width direction, the radio wave radiation area of the vehicle-to-vehicle communication antenna 9b is not biased to the left and right, and communication can be ensured. In addition, in this embodiment, there may be a plurality of light sources 61 . Further, there may be a plurality of vehicle-to-vehicle communication antennas 9a.

In FIG. 3, the vehicle-to-vehicle communication antenna 9b is connected to the antenna wire at a position where it completely or partially overlaps with the light body 72 of the tail light 7 when the lean vehicle 1 in an upright state is viewed in the longitudinal direction. is configured to With such an arrangement, a compact arrangement of the vehicle-to-vehicle communication antenna 9b can be realized for the tail light 7 as a whole. Further, even if the vehicle-to-vehicle communication antenna 9b is provided at a position where the vehicle-to-vehicle communication antenna 9b receives the running wind, it is possible to prevent the vehicle-to-vehicle communication antenna 9b from affecting the running performance. Further, the vehicle-to-vehicle communication antenna 9b is configured so that the antenna wire extends from the vehicle-to-vehicle communication antenna 9b in the direction opposite to the direction of light emitted from the tail light 7, that is, in the forward direction in the front-rear direction of the lean vehicle 1. It is At this time, the vehicle-to-vehicle communication antenna 9 b may be configured so that the antenna wire is bundled with the cable of the light source 71 and exits from the lamp body 72 . Further, the vehicle-to-vehicle communication antenna 9b may be configured such that the antenna wire extends from the lamp body 72 separately from the cable of the light source 71 . Further, the vehicle-to-vehicle communication antenna 9b is configured such that the antenna wire is protruded from a position close to the coupler of the tail light 7 and different from the coupler. The vehicle-to-vehicle communication antenna 9b is configured to protrude from a position where the wiring work of the taillight 7 and the vehicle-to-vehicle communication antenna 9b can be performed from the same direction. This improves the efficiency of the assembly work of the vehicle-to-vehicle communication antenna 9b. Also, a compact arrangement of the vehicle-to-vehicle communication antenna 9b can be realized.

In FIG. 3, the vehicle-to-vehicle communication antenna 9b is configured such that the antenna wire extends forward of the lean vehicle 1 from the vehicle-to-vehicle communication antenna 9b.

FIG. 4 is a partially enlarged front view showing still another example of the arrangement of the vehicle-to-vehicle communication antenna 9a of the lean vehicle 1 shown in FIG. In the lean vehicle 1 of FIG. 4, the vehicle-to-vehicle communication antenna 9a is provided on the lamp body 62 so as to overlap the headlamp 6 wholly or partially when the lean vehicle 1 in an upright state is viewed in the longitudinal direction. It is Specifically, the vehicle-to-vehicle communication antenna 9 a is arranged at the upper end of a reflector 64 arranged in the lamp body 62 of the headlamp 6 . The lamp body 62 accommodates parts of the headlamp 6 as a lighting device. The lamp body 62 does not contain any parts other than the lamp and the antenna. The vehicle-to-vehicle communication antenna 9a is arranged outside the range that can be seen through the lens 67 when the headlight 6 is viewed forward. By arranging the vehicle-to-vehicle communication antenna 9a at the upper end of the reflector 64 arranged in the lamp body 62 of the headlamp 6, the vehicle-to-vehicle communication can be performed as the entire headlamp 6 including the vehicle-to-vehicle communication antenna 9a. A compact arrangement of the antenna 9a can be realized. Further, the vehicle-to-vehicle communication antenna 9a is less susceptible to wind pressure. Further, the vehicle-to-vehicle communication antenna 9a is not visible from the outside of the lean vehicle 1, and the design does not impair the appearance characteristics of the lean vehicle. Furthermore, since the vehicle-to-vehicle communication antenna 9a is provided near the center of the lean vehicle body 2 in the vehicle width direction, the radio wave radiation area of the vehicle-to-vehicle communication antenna 9a is not biased to the left and right, and communication can be ensured.

In FIG. 4, the antenna wire 68 of the vehicle-to-vehicle communication antenna 9a is configured to extend in the rearward direction of the lean vehicle 1 from the vehicle-to-vehicle communication antenna 9a. The antenna wire 68 of the vehicle-to-vehicle communication antenna 9 a is configured to extend from the lamp body 62 separately from the cable of the light source 61 . Further, the antenna wire 68 of the vehicle-to-vehicle communication antenna 9a may be configured to exit from a position close to the mounting position of the coupler 65 and different from the mounting position. The wiring work of the lamp body 62 in the vehicle-to-vehicle communication antenna 9a can be performed from the same direction as the work of the vehicle-to-vehicle communication antenna 9a. The antenna wire 68 of the vehicle-to-vehicle communication antenna 9a may be bundled with the cable of the light source 61 so as to extend from the lamp body 62 .

FIG. 5A is a partially enlarged front view showing still another example of the arrangement of the vehicle-to-vehicle communication antenna 9a of the lean vehicle 1 shown in FIG. 5B is a partially enlarged side view showing still another example of the arrangement of the vehicle-to-vehicle communication antenna 9a of the lean vehicle 1 shown in FIG. In the lean vehicle 1 of FIGS. 5A and 5B , the vehicle-to-vehicle communication antenna 9 is arranged inside the cowl 10 attached to the body portion 4 of the lean vehicle body 2 . Here, the vehicle-to-vehicle communication antenna 9a is provided on the lamp body 62 so as to entirely or partially overlap the headlamp 6 when the lean vehicle 1 in an upright state is viewed in the longitudinal direction. Specifically, the vehicle-to-vehicle communication antenna 9 a is arranged at the upper end of a reflector 64 forming part of the lamp body 62 of the headlight 6 provided on the cowl 10 . The lamp body 62 accommodates parts of the headlamp 6 as a lighting device. The lamp body 62 does not contain any parts other than the lamp and the antenna. The vehicle-to-vehicle communication antenna 9 is arranged outside the range that can be seen through the lens 67 when the headlamp 6 is viewed forward. When the vehicle-to-vehicle communication antenna 9a is arranged in the cowl 10 attached to the main body 4, the vehicle-to-vehicle communication antenna 9a is less susceptible to wind pressure. Further, the vehicle-to-vehicle communication antenna 9a is not visible from the outside of the lean vehicle 1, and does not impair the appearance characteristics of the lean vehicle 1 in terms of design. Furthermore, since the vehicle-to-vehicle communication antenna 9a is provided near the center of the lean vehicle body 2 in the vehicle width direction, the radio wave radiation area of the vehicle-to-vehicle communication antenna 9a is not biased to the left and right, and communication can be ensured.

5A and 5B, the vehicle-to-vehicle communication antenna 9a is configured such that the antenna wire extends in the rearward direction of the lean vehicle 1 from the vehicle-to-vehicle communication antenna 9a. The vehicle-to-vehicle communication antenna 9 a may be configured such that the antenna wire is bundled with the cable of the light source 61 and exits from the lamp body 62 . Further, the vehicle-to-vehicle communication antenna 9 a may be configured such that the antenna wire extends from the lamp body 62 separately from the cable of the light source 61 .

Here, the position of the vehicle-to-vehicle communication antenna 9a of the lean vehicle 1 will be described with reference to FIG. FIG. 6 is a front view showing the position of the vehicle-to-vehicle communication antenna 9a of the lean vehicle 1 shown in FIG. Part (a) of FIG. 6 is a front view showing the position of the vehicle-to-vehicle communication antenna 9a in the upright state of the lean vehicle 1 shown in FIG. Parts (b) and (c) of FIG. 6 are front views showing the position of the vehicle-to-vehicle communication antenna 9a in the lean posture of the lean vehicle 1 shown in FIG. Here, the lean inclination angle of the lean vehicle 1 in part (b) of FIG. 6 is smaller than the lean inclination angle of the lean vehicle 1 in part (c) of FIG.

In parts (b) and (c) of FIG. 6, the lean vehicle 1 leans leftward in the traveling direction with the front wheels 3a and the rear wheels 3b (see FIG. 1) in contact with the ground contact position X on the ground G. In FIG. First, the center line Y0 of the lean vehicle 1 is perpendicular to the ground G in the upright state. Note that the center line Y0 is a line extending vertically through the center of the lean vehicle 1 in the upright state in the vehicle width direction. ZA0 indicates the height of the vehicle-to-vehicle communication antenna 9a. Also, ZL0 indicates the height of the lower end of the headlamp 6 . When the tilt angle of the lean vehicle 1 to the left reaches θ1 (part (b) of FIG. 6), the center line Y0 moves to Y1. The height of the vehicle-to-vehicle communication antenna 9a from the ground G at this time is ZA1. The height of the lower end of the headlamp 6 is ZL1. When the tilt angle of the lean vehicle 1 to the left reaches θ2 (part (c) in FIG. 6), the center line Y1 moves to Y2. The height of the vehicle-to-vehicle communication antenna 9a from the ground G at this time is ZA2. The height of the lower end of the headlamp 6 is ZL2.

Thus, in FIG. 6, the heights ZA1 and ZA2 of the vehicle-to-vehicle communication antenna 9a from the ground G decrease (ZA0> ZA1>ZA2). Also, the heights ZL1 and ZL2 of the lower ends of the headlamps 6 from the ground G decrease as the leftward lean angle of the lean vehicle 1 increases (ZL0>ZL1>ZL2). At this time, even if the lean vehicle 1 tilts to the tilt angle θ2, the height ZA2 of the vehicle-to-vehicle communication antenna 9a from the ground G is higher than the height ZL0 of the lower end of the headlamp 6 from the ground G in the upright state. also located high. Therefore, the height of the vehicle-to-vehicle communication antenna 9a does not easily decrease when turning, and the change in the height of the vehicle-to-vehicle communication antenna 9a between the straight running state and the turning state can be suppressed. As described above, it is possible to suppress the change in the transmission/reception performance of the vehicle-to-vehicle communication that depends on the difference between when the lean vehicle 1 is traveling straight and when it is turning.

Next, the position of the vehicle-to-vehicle communication antenna 9b of the lean vehicle 1 will be described with reference to FIG. FIG. 7 is a rear view showing the position of the vehicle-to-vehicle communication antenna 9b of the lean vehicle 1 shown in FIG. Part (a) of FIG. 7 is a rear view showing the position of the vehicle-to-vehicle communication antenna 9b in the upright state of the lean vehicle 1 shown in FIG. Parts (b) and (c) of FIG. 7 are rear views showing the position of the vehicle-to-vehicle communication antenna 9b in the lean posture of the lean vehicle 1 shown in FIG. Here, the lean inclination angle of the lean vehicle 1 in part (b) of FIG. 7 is smaller than the lean inclination angle of the lean vehicle 1 in part (c) of FIG.

In parts (b) and (c) of FIG. 7, the lean vehicle 1 leans rightward in the direction of travel with the front wheels 3a and the rear wheels 3b (see FIG. 1) in contact with the ground contact position X on the ground G. In FIG. First, the center line Y0 of the lean vehicle 1 is perpendicular to the ground G in the upright state. Note that the center line Y0 is a line extending vertically through the center of the lean vehicle 1 in the upright state in the vehicle width direction. TZA0 indicates the height of the vehicle-to-vehicle communication antenna 9b. TZL0 indicates the height of the lower end of the tail light 7. As shown in FIG. When the tilt angle of the lean vehicle 1 to the left reaches θ1 (part (b) of FIG. 7), the center line Y0 moves to Y1. At this time, the height of the vehicle-to-vehicle communication antenna 9b from the ground G is TZA1. The height of the lower end of the tail light 7 is TZL1. When the tilt angle of the lean vehicle 1 to the left reaches θ2 (part (c) in FIG. 7), the center line Y1 moves to Y2. At this time, the height of the vehicle-to-vehicle communication antenna 9b from the ground G is TZA2. The height of the lower end of the tail light 7 is TZL2.

In this way, in FIG. 7, the heights TZA1 and TZA2 of the vehicle-to-vehicle communication antenna 9b from the ground G decrease (TZA0> TZA1>TZA2). In addition, the heights TZL1 and TZL2 of the lower end of the tail light 7 from the ground G decrease as the tilt angle of the lean vehicle 1 in the left direction increases (TZL0>TZL1>TZL2). At this time, even if the lean vehicle 1 tilts to the tilt angle θ2, the height TZA2 of the vehicle-to-vehicle communication antenna 9b from the ground G is higher than the height TZL0 of the lower end of the tail light 7 from the ground G in the upright state. do. Therefore, the vehicle-to-vehicle communication antenna 9b is difficult to lower in height when turning, and the change in height of the vehicle-to-vehicle communication antenna between straight running and turning can be suppressed. As described above, it is possible to suppress the change in the transmission performance of the vehicle-to-vehicle communication that depends on the difference between when the lean vehicle is traveling straight ahead and when it is turning.

Next, with reference to FIGS. 8(a) and 8(b), the radio wave radiation area of the vehicle-to-vehicle communication antenna 9a of the lean vehicle 1 will be described. FIG. 8 is a front view showing a radio wave radiation area in the vehicle width direction of the vehicle-to-vehicle communication antenna 9a of the lean vehicle 1 shown in FIG. Part (a) of FIG. 8 is a front view showing a radio wave radiation area in the vehicle width direction of the vehicle-to-vehicle communication antenna 9a in the upright state of the lean vehicle 1 shown in FIG. Part (b) of FIG. 8 is a front view showing a radio wave radiation area in the vehicle width direction in the lean posture of the lean vehicle 1 shown in FIG.

FIG. 8(a) shows the radio wave radiation area in the vehicle width direction of the vehicle-to-vehicle communication antenna 9a in the upright state of the lean vehicle 1. As shown in FIG. As shown in FIG. 8(a), the lean vehicle 1 stands upright on the flat ground G. As shown in FIG. The traveling direction upper right edge L1 of the radio wave radiation area in the vehicle width direction of the vehicle-to-vehicle communication antenna 9a is inclined upward by an angle θ1 from the vehicle-to-vehicle communication antenna 9a to the horizontal line H passing through the vehicle-to-vehicle communication antenna 9a. extending to A right lower edge L2 in the traveling direction of the radio wave radiation area of the vehicle-to-vehicle communication antenna 9a in the vehicle width direction is diagonally below the vehicle-to-vehicle communication antenna 9a by an angle θ2 from the horizontal line H passing through the vehicle-to-vehicle communication antenna 9a. extending in the direction Therefore, the radiation area of the radio waves in the vehicle width direction rightward of the vehicle-to-vehicle communication antenna 9a is the area E1 between L1 and L2. Further, the upper left edge L3 of the traveling direction of the radio wave radiation area of the vehicle-to-vehicle communication antenna 9a in the vehicle width direction is inclined at an angle θ3 from the vehicle-to-vehicle communication antenna 9a to the horizontal line H passing through the vehicle-to-vehicle communication antenna 9a. extending upwards. The traveling direction lower left edge L4 of the radio wave radiation area in the vehicle width direction of the vehicle-to-vehicle communication antenna 9a is downward from the vehicle-to-vehicle communication antenna 9a by an angle θ4 from the horizontal line H passing through the vehicle-to-vehicle communication antenna 9a. growing. Therefore, the radiation area of the radio waves in the vehicle width direction rightward of the vehicle-to-vehicle communication antenna 9a is the area E2 between L3 and L4.

On the other hand, FIG. 8B shows the radio wave radiation area in the vehicle width direction of the vehicle-to-vehicle communication antenna 9a when the lean vehicle 1 is tilted. As shown in FIG. 8B, the lean vehicle 1 is inclined leftward in the direction of travel by an angle θ0 with respect to the flat ground G. As shown in FIG. The traveling direction upper right edge L1 of the radio wave radiation area in the vehicle width direction of the vehicle-to-vehicle communication antenna 9a is positioned at an angle θ5 (=θ1+θ0) from the vehicle-to-vehicle communication antenna 9a to the horizontal line H passing through the vehicle-to-vehicle communication antenna 9a. It extends diagonally upward. A right lower edge L2 in the traveling direction of the radio wave radiation area of the vehicle-to-vehicle communication antenna 9a in the vehicle width direction is positioned at an angle θ6 (=θ2) from the vehicle-to-vehicle communication antenna 9a to a horizontal line H passing through the vehicle-to-vehicle communication antenna 9a. −θ0) extending downward. Therefore, if θ2>θ0, the radio wave radiation area in the vehicle width direction of the vehicle-to-vehicle communication antenna 9a secures the radiation area in the vehicle width direction of the vehicle-to-vehicle communication antenna 9a in the lower right direction of the traveling direction. can.

Further, the traveling direction upper left edge L3 of the radio wave radiation area in the vehicle width direction of the vehicle-to-vehicle communication antenna 9a is positioned at an angle θ7 (= It extends obliquely upward by θ3−θ0). The traveling direction lower left edge L4 of the radio wave radiation area in the vehicle width direction of the vehicle-to-vehicle communication antenna 9a is positioned at an angle of θ8 (=θ4+θ0) from the vehicle-to-vehicle communication antenna 9a to the horizontal line H passing through the vehicle-to-vehicle communication antenna 9a. only extends downward. Therefore, if θ3>θ0, the radiation area of the left direction radio wave in the vehicle width direction of the vehicle-to-vehicle communication antenna 9a is the area E2 between L3 and L4. Radio waves in the vehicle width direction can secure a radiation area in the upper left direction in the direction of travel.

Therefore, even when the lean vehicle 1 is tilted, the vehicle-to-vehicle communication antenna 9a has horizontal directivity with respect to the ground. This is because, when the lean vehicle body 2 of the lean vehicle 1 is in an upright position, the radio wave radiation area can have a vertical width by radiating the radio waves in an oblique direction with respect to the horizontal direction of the ground. .

Therefore, even when the lean vehicle 1 leans while turning to the left or right, vehicle-to-vehicle communication can be performed with vehicles existing in the areas in front of the lean vehicle in the left direction and the right direction in the same state as during straight running. can be done. The same applies to the vehicle-to-vehicle communication antenna 9b provided in the tail light 7 of the lean vehicle 1. FIG.

1 lean vehicle 2 lean vehicle body 3 lean wheel 4 main body 5 steering wheel 3a front wheel 3b rear wheel 6 headlight 7 taillight 8 vehicle-to-vehicle communication device 9, 9a, 9b vehicle-to-vehicle communication antenna 10 cowl 41 engine 42 steering head pipe 50 Front fork 51 steering handle 52a, 52b fork pipe 53 handle bracket 54 under bracket 55 steering shaft 56 accelerator grip 61, 71 light source 62, 72 lamp body 63 cover 65 coupler

Claims (8)

a lean vehicle body that leans leftward during a left turn and leans rightward during a right turn;
a lean wheel having a ground contact portion having a substantially arcuate cross-sectional contour shape, provided on the lean vehicle body, and tilting leftward during left turning and tilting rightward during right turning;
A light source for radiating light forward or backward of a lean vehicle equipped with an antenna for inter- vehicle communication, a reflector as a metal member, and a non -metallic material supporting the light source and the reflector and supported by the lean vehicle body a lighting device provided at the front end or the rear end of the lean vehicle body;
a vehicle-to-vehicle communication device provided in the lean vehicle body and used for vehicle-to-vehicle communication with vehicles existing around the lean vehicle body;
A lean vehicle equipped with an inter-vehicle communication antenna and an inter-vehicle communication antenna electrically connected to the inter-vehicle communication device,
The vehicle-to-vehicle communication antenna is integrally inclined leftward or rightward with the lean vehicle body, is positioned above the upper end of the lean wheel, and emits light from the vehicle-to-vehicle communication antenna to the lamp. When viewed in the direction, the vehicle-to-vehicle communication antenna and the reflector as the metal member do not overlap as a whole , or the communication performance of the vehicle-to-vehicle communication antenna is not substantially affected. When the lean vehicle equipped with the vehicle-to-vehicle communication antenna in an upright state is viewed in the front-rear direction, the vehicle-to-vehicle communication antenna partially overlaps with the non-metallic lighting body, and the light from the lighting device overlaps Provided inside the lamp body of the lamp so as to communicate in the same direction or substantially the same direction as the irradiation direction, and at least transmit radio waves in the forward direction or the rearward direction of the lean vehicle equipped with the vehicle-to-vehicle communication antenna. A lean vehicle equipped with an antenna for vehicle-to-vehicle communication. A lean vehicle equipped with an inter-vehicle communication antenna according to claim 1,
A lean vehicle equipped with an inter-vehicle communication antenna, wherein the inter-vehicle communication antenna includes a plate-shaped resin substrate and a planar metal antenna section provided on the resin substrate. A lean vehicle equipped with an inter-vehicle communication antenna according to claim 1 or 2,
The vehicle-to-vehicle communication antenna is connected to the antenna wire at a position where the vehicle-to-vehicle communication antenna-equipped lean vehicle in an upright position is viewed in the front-rear direction so as to overlap the lamp body of the lighting device wholly or partially. A lean vehicle equipped with an antenna for vehicle-to-vehicle communication, characterized in that it is configured as follows. A lean vehicle equipped with an inter-vehicle communication antenna according to any one of claims 1 to 3,
The vehicle-to-vehicle communication antenna is configured so that an antenna wire is projected from the vehicle-to-vehicle communication antenna in a direction opposite to the direction of light irradiation from the lamp in the longitudinal direction of the lean vehicle equipped with the vehicle-to-vehicle communication antenna. A lean vehicle equipped with an antenna for vehicle-to-vehicle communication, characterized in that: A lean vehicle equipped with an inter-vehicle communication antenna according to claim 4,
The vehicle-to-vehicle communication antenna mounted lean vehicle, wherein an antenna wire of the vehicle-to-vehicle communication antenna is configured to protrude from a position close to and different from the coupler of the lamp. A lean vehicle equipped with an inter-vehicle communication antenna according to claim 5,
The vehicle, wherein the vehicle-to-vehicle communication antenna is configured so that the antenna wire extends from a position where the wiring work of the lighting device can be performed from the same direction as the wiring work of the vehicle-to-vehicle communication antenna. Lean vehicle with inter-vehicle communication antenna. A lean vehicle equipped with an inter-vehicle communication antenna according to any one of claims 1 to 6,
The vehicle-to-vehicle communication antenna is provided on the lamp body so that the upper end of the vehicle-to-vehicle communication antenna is located above the light source of the lamp in the lean vehicle equipped with the vehicle-to-vehicle communication antenna in an upright state. A lean vehicle equipped with an antenna for vehicle-to-vehicle communication. A lean vehicle equipped with an inter-vehicle communication antenna according to any one of claims 1 to 7,
The lighting device is a left and right dual headlight,
The left and right dual headlight includes a left light source and a right light source spaced apart from each other in the vehicle width direction,
The vehicle-to-vehicle communication antenna is partially or wholly located between the left light source and the right light source in the vehicle width direction in the lean vehicle equipped with the vehicle-to-vehicle communication antenna in an upright state. A lean vehicle equipped with an antenna for vehicle-to-vehicle communication, characterized in that it is provided so as to be positioned at a point.

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