V2X communication antenna-mounted leaning vehicle

A leaning vehicle, comprising:

• a body frame, which leans in a vehicle leftward direction when the leaning vehicle turns left and leans in a vehicle rightward direction when the leaning vehicle turns right;
• a vehicle-to-everything (V2X) communication device which is configured to perform V2X communication;
• and
• a V2X communication antenna which is mounted on the leaning vehicle at a mounting location, and is electrically connected to the V2X communication device, the V2X communication antenna leaning in the vehicle leftward direction or in the vehicle rightward direction together with the body frame, and being an antenna having directivity, wherein
• the leaning vehicle has
• a horizontal mounting plane, which is a horizontal plane passing through the mounting location when the body frame is upright,
• a vertical mounting plane, which is a vertical plane passing through the mounting location when the body frame is upright, the vertical mounting plane being perpendicular to the horizontal mounting plane, and being parallel to a vehicle front-rear direction,
• a vehicle upper region which is a region above the horizontal mounting plane in a vehicle up-down direction,
• a vehicle lower region which is a region below the horizontal mounting plane in the vehicle up-down direction,
• a vehicle left region which is a region leftward of the vertical mounting plane in a vehicle left-right direction, and
• a vehicle right region which is a region rightward of the vertical mounting plane in the vehicle left-right direction;
• and
• the V2X communication antenna has such a radiation pattern that, when the V2X communication antenna is not mounted on the leaning vehicle, a 3 dB beam width of the radiation pattern in a horizontal plane thereof is larger than the 3 dB beam width in a vertical plane thereof, the 3 dB beam width in the vertical plane existing both in an upper region and in a lower region, the 3 dB beam width in the horizontal plane existing both in a left region and in a right region, and the radiation pattern thereof in the vertical plane having a larger 3 dB beam width in the upper region than in the lower region, wherein
• the horizontal plane, the vertical plane, the upper region, the lower region, the left region and the right region are so positioned as to, when the V2X communication antenna is mounted on the leaning vehicle, coincide respectively with the horizontal mounting plane, the vertical mounting plane, the vehicle upper region, the vehicle lower region, the vehicle left region and the vehicle right region;
• and
• the V2X communication device performs the V2X communication with another V2X communication device, at least when the leaning vehicle turns left and the body frame leans in the vehicle leftward direction, or when the leaning vehicle turns right and the body frame leans in the vehicle rightward direction.