Head lamp device of straddle vehicle

1. A head lamp device of a straddle vehicle, the head lamp device having an optical axis adjustment mechanism, the head lamp device comprising:

a housing;

an internal unit including a light source device which emits light, and a light output device which outputs in a forward direction the light emitted from the light source device, through the housing, the internal unit being accommodated in the housing in a state in which the internal unit is tiltable with respect to the housing;

a first operation member; and

a second operation member,

wherein the housing includes a rear wall part that is located rearward of the internal unit and a support point member that is provided at the rear wall part,

wherein the internal unit includes a support point part which is tiltably supported by the housing and is coupled to the support point member,

wherein the support point member and the support point part form a spherical bearing,

wherein the first operation member tilts the internal unit around the support point part in a first direction perpendicular to a forward and rearward direction with respect to the housing,

wherein the second operation member tilts the internal unit around the support point member in a second direction perpendicular to the forward and rearward direction with respect to the housing, and

wherein in a front view, the support point part is disposed in an area center of the internal unit or at a location that is in a vicinity of the area center, and the support point part is disposed closer to the area center of the internal unit than the first operation member and the second operation member.

2. The head lamp device according to claim 1 , wherein the light source device includes a light emitting diode.

3. The head lamp device according to claim 1 ,

wherein in the front view, a wall surface of the rear wall is continuous, in a region including the light source device or the area center.

4. The head lamp device according to claim 1 ,

wherein in the front view, the support point part is disposed at a center of the internal unit in a vertical direction or at a location that is in a vicinity of the center of the internal unit in the vertical direction, and

wherein the support point part is tiltable around an axis line extending in a rightward and leftward direction.

5. The head lamp device according to claim 1 ,

wherein in the front view, the support point part is disposed at a center of the internal unit in a lengthwise direction or at a location that is in a vicinity of the center of the internal unit in the lengthwise direction, and

wherein the support point part is tiltable in a direction perpendicular to the lengthwise direction.

6. The head lamp device according to claim 1 ,

wherein in the front view, the support point part is disposed at a center of the internal unit in a rightward and leftward direction or at a location that is in a vicinity of the center of the internal unit in the rightward and leftward direction, and

wherein the support point part is tiltable around an axis line extending in a vertical direction.

7. The head lamp device according to claim 1 ,

wherein in the front view, a distance from the area center of the internal unit to the support point part is shorter than a half of a distance from the area center of the internal unit to the first operation member and is shorter than a half of a distance from the area center of the internal unit to the second operation member.

8. A head lamp device of a straddle vehicle, the head lamp device having an optical axis adjustment mechanism, the head lamp device comprising:

a housing; and

an internal unit including a light source device which emits light, and a light output device which outputs in a forward direction the light emitted from the light source device, through the housing, the internal unit being accommodated in the housing in a state in which the internal unit is tiltable with respect to the housing,

wherein the housing includes a rear wall part that is located rearward of the internal unit and a support point member that is provided at the rear wall part,

wherein the internal unit includes a support point part which is tiltably supported by the housing and is coupled to the support point member,

wherein the support point member and the support point part form a spherical bearing, and

wherein in a front view, the support point part is disposed at a location where the support point part overlaps with the light source device or at a location that is adjacent to the location where the support point part overlaps with the light source device.

9. The head lamp device according to claim 8 ,

wherein the light source device includes a light emitting diode.

10. The head lamp device according to claim 9 ,

wherein in the front view, a distance from an area center of the internal unit to the support point part is shorter than a half of the distance from the area center of the internal unit to a first operation member and is shorter than a half of a distance from the area center of the internal unit to a second operation member.

11. The head lamp device according to claim 8 ,

wherein in the front view, a wall surface of the rear wall part is continuous in a region including the light source device or an area center of the internal unit.

12. The head lamp device according to claim 8 ,

wherein in the front view, the support point part is disposed at a center of the internal unit in a vertical direction or at a location that is in a vicinity of the center of the internal unit in the vertical direction, and

wherein the support point part is tiltable around an axis line extending in a rightward and leftward direction.

13. The head lamp device according to claim 8 ,

wherein in the front view, the support point part is disposed at a center of the internal unit in a lengthwise direction or at a location that is in a vicinity of the center of the internal unit in the lengthwise direction, and

wherein the support point part is tiltable in a direction perpendicular to the lengthwise direction.

14. The head lamp device according to claim 8 ,

wherein in the front view, the support point part is disposed at a center of the internal unit in a rightward and leftward direction or at a location that is in a vicinity of the center of the internal unit in the rightward and leftward direction, and

wherein the support point part is tiltable around an axis line extending in a vertical direction.

15. The head lamp device according to claim 8 ,

a first operation member that tilts the internal unit around the support point part in a first direction perpendicular to a forward and rearward direction, with respect to the housing; and

a second operation member that tilts the internal unit around the support point member in a second direction perpendicular to the forward and rearward direction, with respect to the housing,

wherein in the front view, the support point part is disposed closer to an area center of the internal unit than the first operation member and the second operation member.