JP5885862B1 - Headlamp device and saddle riding type vehicle - Google Patents

Abstract

Provided are a headlamp device and a saddle-ride type vehicle capable of suppressing a change in irradiation range at the time of banking of a vehicle body while suppressing mold formation. A distance between a left ridge line 134L1 of a left cross section 135L of a light shielding member 130 and a rotation shaft 120 is equal to a distance between a left ridge line 134L1 of a left cross section 136L and the rotation shaft 120. The distance between the left ridge line 134Li of the left cross section 135L and the rotation shaft 120 is smaller than the distance between the left ridge line 134Li of the left cross section 136L and the rotation shaft 120. The distance between the left ridge line 134Li of the left cross section 135L and the rotation shaft 120 is smaller than the distance between the left ridge line 134Li-1 and the rotation shaft 120. The angle between the straight line connecting the left ridge line 134Li of the left cross section 135L to the rotation axis 120 and the straight line connecting the left ridge line 134Li-1 to the rotation axis 120 is a straight line connecting the left ridge line 134Li of the left cross section 136L to the rotation axis 120. And the angle formed by the straight line connecting the left ridge line 134Li-1 to the rotation axis 120 is smaller. [Selection] Figure 6

Description

  The present invention relates to a headlamp device and a saddle-ride type vehicle.

  A saddle-type vehicle such as a motorcycle is provided with a headlamp in order to ensure forward visibility. Since the body of a motorcycle is tilted during cornering, the irradiation range by the headlamp provided on the body changes. For example, when cornering in the right direction, the motorcycle body tilts to the right, so the irradiation range by the headlamp also falls to the right. Therefore, the irradiation range in the front right of the motorcycle is reduced. On the other hand, when cornering in the left direction, the motorcycle body tilts to the left, so the irradiation range by the headlamp also falls to the left. As a result, the left front irradiation range of the motorcycle is reduced.

  In general, the headlamp is configured so that a sufficient irradiation range can be obtained even when the irradiation range of the headlamp decreases during banking of the vehicle body as described above. However, there are some motorcycle occupants who want to suppress changes in the irradiation range. Therefore, in the projector type headlamp of Patent Document 1, a shade is disposed between the projection lens and the reflector. The shade includes a central light shielding part, a left light shielding part, and a right light shielding part. The left light-shielding part and the right light-shielding part are provided so as to be able to swing left and right with respect to the central light-shielding part.

JP 2011-150950 A

  In Patent Document 1, the left light shielding part or the right light shielding part swings with respect to the central light shielding part when the vehicle body is tilted. Thereby, the change of the irradiation range is suppressed. However, the shade of Patent Document 1 requires a mechanism for independently swinging the left light-shielding portion and the right light-shielding portion, which increases the size of the headlamp.

  An object of the present invention is to provide a headlamp device and a saddle-ride type vehicle that can suppress a change in irradiation range at the time of banking a vehicle body while suppressing an increase in size.

  (1) A headlamp device according to a first aspect of the present invention is a headlamp device for a saddle-ride type vehicle, and is a light source and a light shield that is positioned in front of the light source and is rotatable around a rotation axis that extends in the left-right direction of the vehicle. A member, a rotation drive unit that rotates the light shielding member in first and second rotational directions opposite to each other, and the light shielding member so as to rotate in the first or second rotational direction based on the bank angle of the saddle-ride type vehicle. And a light shielding member having a left light shielding surface and a right light shielding surface arranged in the left-right direction of the vehicle, and the left light shielding surface and the right light shielding surface receive a part of light from the light source. The left light-shielding surface is arranged so as to be shielded from light, and the left light-shielding surface has first to Nth left ridge lines (N is an integer of 2 or more) in this order extending in the left-right direction of the vehicle and arranged in the first rotation direction. Within the range of the first left cross-section that is located within the range and orthogonal to the rotation axis, and within the range of the left light-shielding surface The second left cross section that is located to the right of the left cross section of 1 and orthogonal to the rotation axis is defined as a light shielding member, and the distance between the first left ridge line and the rotation axis in the first left cross section is , Equal to the distance between the first left ridge line and the rotation axis in the second left section, and between the i-th left ridge line (i is an integer of 2 to N) and the rotation axis in the first left section. The distance is smaller than the distance between the i-th left ridge line and the rotation axis in the second left cross-section, and the distance between the i-th left ridge line and the rotation axis in the first left cross-section is (i -1) is smaller than the distance between the left ridge line and the rotation axis, and the straight line connecting the i-th left ridge line to the rotation axis in the first left section and the (i-1) left ridge line to the rotation axis The angle between the straight line connecting the straight line connecting the i-th left ridge line and the rotation axis in the second left cross section and the (i-1) -th left ridge line to the rotation axis. The right light-shielding surface has first to Mth right ridge lines (M is an integer of 2 or more) in this order extending in the left-right direction of the vehicle and arranged in the second rotational direction. A first right cross-section located within the right light-shielding surface and orthogonal to the rotation axis, and a second right cross-section located to the left of the first right cross-section within the right light-shielding surface and perpendicular to the rotation axis Is defined as a light shielding member, and the distance between the first right ridge line and the rotation axis in the first right cross section is between the first right ridge line and the rotation axis in the second right section. The distance between the j-th right ridge line in the first right cross section (j is an integer of 2 to M) and the rotation axis is equal to the distance between the j-th right ridge line and the rotation axis in the second right cross-section. The distance between the j-th right ridge line and the rotation axis in the first right section is smaller than the distance between the (j−1) -th right ridge line and the rotation axis. The angle formed between the straight line connecting the j-th right ridge line to the rotation axis in the first right cross-section and the straight line connecting the (j−1) -th right ridge line to the rotation axis is the second right cross-section. The angle is smaller than an angle formed by a straight line connecting the jth right ridge line to the rotation axis and a straight line connecting the (j−1) th right ridge line to the rotation axis.

  In this headlamp device, a light shielding member is disposed in front of the light source so that a part of light from the light source can be shielded by the left light shielding surface and the right light shielding surface arranged in the left-right direction of the vehicle. Based on the bank angle of the saddle-ride type vehicle, the light shielding member rotates in the first or second rotation direction opposite to each other around the rotation axis extending in the vehicle left-right direction by the rotation drive unit.

  On the left light shielding surface of the light shielding member, first to Nth left ridge lines (N is an integer of 2 or more) extend in the vehicle left-right direction and are arranged in this order in the first rotation direction. The distance between the first left ridge line and the rotation axis in the first left cross section is equal to the distance between the first left ridge line and the rotation axis in the second left cross section. The distance between the i-th left ridge line (i is an integer of 2 to N) and the rotation axis in the first left section is greater than the distance between the i-th left ridge line and the rotation axis in the second left section. Is also small.

  In the first left cross section, the distance between the i-th left ridge line and the rotation axis is smaller than the distance between the (i-1) -th left ridge line and the rotation axis. Furthermore, the angle formed by the straight line connecting the i-th left ridge line to the rotation axis in the first left cross-section and the straight line connecting the (i−1) -th left ridge line to the rotation axis is the second left cross-section. It is smaller than an angle formed by a straight line connecting the left ridge line of i to the rotation axis and a straight line connecting the (i-1) th left ridge line to the rotation axis.

  In this case, the i-th left ridge line is twisted with respect to the (i-1) -th left ridge line. Therefore, by rotating the light shielding member to a predetermined rotational position corresponding to the bank angle of the saddle-ride type vehicle, it is possible to realize a light distribution suitable for the bank angle using the left ridge line.

  On the right light shielding surface of the light shielding member, the first to Mth right ridge lines (M is an integer of 2 or more) extend in the vehicle left-right direction and are arranged in this order in the second rotation direction. The distance between the first right ridge line and the rotation axis in the first right section is equal to the distance between the first right ridge line and the rotation axis in the second right section. The distance between the j-th right ridge line (j is an integer of 2 to M) and the rotation axis in the first right section is greater than the distance between the j-th right ridge line and the rotation axis in the second right section. Is also small.

  In the first right section, the distance between the j-th right ridge line and the rotation axis is smaller than the distance between the (j−1) -th right ridge line and the rotation axis. Furthermore, the angle formed by the straight line connecting the jth right ridge line to the rotation axis in the first right cross section and the straight line connecting the (j−1) right ridge line to the rotation axis is the second right cross section. The angle is smaller than the angle formed by the straight line connecting the j right ridge line to the rotation axis and the straight line connecting the (j−1) th right ridge line to the rotation axis.

  In this case, the j-th right ridge line is twisted with respect to the (j-1) -th right ridge line. Therefore, by rotating the light shielding member to a predetermined rotation position corresponding to the bank angle of the saddle-ride type vehicle, it is possible to realize a light distribution suitable for the bank angle using the right ridge line.

  In this configuration, the light shielding member rotates in the second rotation direction from the first left ridge line in accordance with the bank angle of the saddle riding type vehicle, so that when the light shielding member is viewed from the rear, the contour of the light shielding member ( The slope of the left ridge that forms the upper or lower edge changes. Further, when the light shielding member rotates in the first rotation direction from the first right ridge line according to the bank angle of the saddle-ride type vehicle, the contour of the light shielding member (upper edge or The slope of the right ridge that forms the lower edge changes.

  Thereby, the change of the illumination range of the headlamp device is suppressed by changing the light distribution according to the left and right bank angles of the saddle-ride type vehicle using the left light shielding surface and the right light shielding surface of the light shielding member. According to said structure, the light distribution on either side can be changed with a single light shielding member. As a result, it is possible to suppress a change in the irradiation range of the headlamp device at the time of banking the saddle-ride type vehicle while suppressing an increase in the size of the headlamp device.

  (2) First to Nth left virtual planes that are arranged around the rotation axis in the first rotation direction are defined, and the first left virtual plane is in contact with the first left ridge line of the left light shielding surface, and the i th The left virtual plane of (i-1) rotates the (i-1) th left virtual plane around the rotation axis by a first angle in the first rotation direction, and the angle of the i-th left virtual plane relative to the rotation axis is relative to the rotation axis. It is obtained by bringing the left end of the (i-1) left virtual plane closer to the rotation axis so as to be larger than the angle of the (i-1) left virtual plane by the i th left virtual plane. And the (i-1) th left virtual plane are determined as the i-th left ridge line, and first to Mth right virtual planes arranged in the second rotation direction around the rotation axis are defined, The first right virtual plane is in contact with the first right ridge line of the right light shielding surface, and the jth right virtual plane is the (j−1) th right virtual plane with the rotation axis as the center. The third rotation is performed in the second rotation direction, and the angle of the j-th right virtual plane with respect to the rotation axis is larger than the angle of the (j−1) -th right virtual plane with respect to the rotation axis by a fourth angle. It is obtained by bringing the right end of the right virtual plane of (j-1) close to the rotation axis, and the intersection line of the jth right virtual plane and the (j-1) right virtual plane is the jth right ridge line May be determined.

  In this case, the first to Nth left ridge lines and the first to Mth right ridge lines that can realize a light distribution suitable for the bank angle of the saddle-ride type vehicle can be easily determined. Therefore, it is possible to more easily suppress the change in the irradiation range of the headlamp device at the time of banking of the saddle-ride type vehicle while suppressing the increase in size of the headlamp device.

  (3) A continuous curved surface including the first to Nth left ridge lines is formed as the first left light shielding portion of the left light shielding surface, and a continuous curved surface including the first to Mth right ridge lines is the right light shielding surface. It may be formed as a first right light shielding part.

  According to this configuration, when the light shielding member rotates in the second rotation direction, when the light shielding member is viewed from the rear, the inclination of the left ridge line that forms the contour (upper edge or lower edge) of the light shielding member becomes the rotation angle. On the other hand, it changes linearly. Further, when the light shielding member rotates in the first rotation direction, when the light shielding member is viewed from the rear, the inclination of the right ridge line forming the contour (upper edge or lower edge) of the light shielding member is linear with respect to the rotation angle. To change. Thereby, the change of the irradiation range of the headlamp device at the time of banking of the saddle-ride type vehicle can be suppressed more smoothly.

  (4) When the light shielding member is viewed from the rear, the contours are sequentially formed as the rotation angle of the light shielding member in the second rotation direction increases from the state in which the first left ridge line forms the contour. When the inclination angle formed by the Nth left ridge line with respect to the rotation axis is increased and the light shielding member is viewed from behind, the first right ridgeline forms a contour from the state in which the light shielding member is moved in the first rotation direction. As the rotation angle increases, the inclination angle formed by the second to Mth right ridge lines that sequentially form the contour with respect to the rotation axis may increase.

  In this case, the light shielding area on the left light shielding surface becomes smaller as the light shielding member rotates in the second rotation direction. On the other hand, the light shielding area on the right light shielding surface becomes smaller as the light shielding member rotates in the first rotation direction. Therefore, it is possible to easily associate the rotation angle of the light shielding member with the bank angle of the saddle riding type vehicle. Therefore, it is possible to more easily suppress the change in the irradiation range of the headlamp device at the time of banking of the saddle-ride type vehicle while suppressing the increase in size of the headlamp device.

  (5) The first left ridge line and the first right ridge line may be continuous with each other.

  According to this configuration, when the light shielding member is viewed from behind, the first left ridge line and the first right ridge line of the light shielding member form a continuous contour (upper edge or lower edge) of the light shielding member. it can. When a saddle-ride type vehicle is banked to the left or right, the light distribution suitable for the bank angle is quickly realized by rotating the shading member from the above state in the first or second direction. can do. Therefore, it is possible to more smoothly suppress the change in the irradiation range of the headlamp device when banking the saddle-ride type vehicle while suppressing the increase in size of the headlamp device.

  (6) The left light-shielding surface is arranged in order from the first left ridge line in the second rotation direction and parallel to the first left ridge line (N + 1) to (N + p) left ridge lines (p is an integer of 1 or more) ), And in the first and second left cross sections, the distance between each of the (N + 1) th to (N + p) left ridge lines and the rotation axis is the distance between the first left ridge line and the rotation axis. The right light shielding surface is arranged in order from the first right ridge line in the first rotation direction and is parallel to the first right ridge line (q + 1) to (M + q) right ridge lines (q is 1). In the first and second right cross sections, the distance between each of the (M + 1) th to (M + q) right ridge lines and the rotation axis in the first and second right cross sections is the same as that of the first right ridge line. It may be equal to the distance between the axes.

  According to this configuration, when the light shielding member rotates in the first rotation direction, the contour (upper edge or lower edge) of the left light shielding surface hardly changes when the light shielding member is viewed from the rear. The outline (upper edge or lower edge) changes. On the other hand, when the light shielding member rotates in the second rotation direction, when the light shielding member is viewed from the rear, the contour (upper edge or lower edge) of the right light shielding surface hardly changes and the contour of the left light shielding surface (upper Edge or bottom edge) changes. Accordingly, the left and right light distribution can be independently changed according to the bank angle of the saddle-ride type vehicle. Therefore, it is possible to more smoothly suppress the change in the irradiation range of the headlamp device when banking the saddle-ride type vehicle while suppressing the increase in size of the headlamp device.

  (7) A partial cylindrical surface including the first left ridge line and the (N + 1) th to (N + p) th left ridge lines is formed as a second left light shielding portion of the left light shielding surface, and the first right ridge line and the (M + 1) th (M + 1) th ) To (M + q) of the partial cylindrical surface including the right ridge line may be formed as the second right light shielding portion of the right light shielding surface.

  According to this configuration, even when the light shielding member rotates by a predetermined angle in the first rotation direction, the contour (upper edge or lower edge) of the left light shielding surface does not change at all when the light shielding member is viewed from the rear. Even when the light shielding member rotates by a predetermined angle in the second rotation direction, the contour (upper edge or lower edge) of the right light shielding surface does not change at all when the light shielding member is viewed from the rear. Accordingly, the left and right light distribution can be independently changed according to the bank angle of the saddle-ride type vehicle. Therefore, it is possible to more smoothly suppress the change in the irradiation range of the headlamp device when banking the saddle-ride type vehicle while suppressing the increase in size of the headlamp device.

  (8) The left light-shielding surface further has a left plane located on the opposite side of the first left ridge line with respect to the rotation axis and parallel to the rotation axis, and the shortest distance between the left plane and the rotation axis is the first The right light-shielding surface is smaller than the shortest distance between the left ridge line and the rotation axis, and further includes a right plane that is located on the opposite side of the first right ridge line with respect to the rotation axis and is parallel to the rotation axis. Is shorter than the shortest distance between the first right ridge line and the rotation axis, the left plane and the right plane are continuous with each other, and the second to Nth left ridge lines are Arranged in the region from the first left ridge line to the left plane in the first rotation direction, and the second to Mth right ridge lines are arranged in the region from the first right ridge line to the right plane in the second rotation direction. May be.

  According to this configuration, when the light shielding member is viewed from behind, the left plane and the right plane can form a continuous contour (upper edge or lower edge) of the light shielding member at a specific rotational position of the light shielding member. . In this case, the light shielding area by the light shielding member is smaller than the light shielding area by the light shielding member when the first left ridge line and the first right ridge line form the contour (upper edge or lower edge) of the light shielding member. Therefore, it is possible to easily generate a light distribution including a region higher than the light distribution when the first left ridge line and the first right ridge line form the contour (upper edge or lower edge) of the light shielding member. . Further, by rotating the light shielding member, it is possible to easily switch between two different light distributions while suppressing an increase in the size of the vehicle. Therefore, it is possible to more easily suppress the change in the irradiation range of the headlamp device at the time of banking of the saddle-ride type vehicle while suppressing the increase in size of the headlamp device.

  (9) In the first and second left cross sections, the left plane is orthogonal to a straight line connecting the first left ridge line and the rotation axis, and in the first and second right cross sections, the right plane is the first right ridge line. May be orthogonal to a straight line connecting the rotation axis.

  In this case, by rotating the light shielding member by 180 degrees, it is possible to easily switch between two different light distributions while suppressing an increase in the size of the vehicle.

  In addition, a large area is secured on the left light shielding surface between the first left ridge line of the rotating member and the left plane. Therefore, it becomes possible to provide more left ridge lines on the left light shielding surface. In addition, a large area is secured on the right light-shielding surface between the first right ridge line of the rotating member and the right plane. Therefore, it becomes possible to provide more right ridge lines on the right light shielding surface. Thereby, the left light-shielding surface and the right light-shielding surface approach a smoother curved surface.

  Therefore, when the light shielding member rotates in the second rotation direction, when the light shielding member is viewed from the rear, the inclination of the left ridge line forming the contour (upper edge or lower edge) of the light shielding member is linear with respect to the rotation angle. To change. Further, when the light shielding member rotates in the first rotation direction, when the light shielding member is viewed from the rear, the inclination of the right ridge line forming the contour (upper edge or lower edge) of the light shielding member is linear with respect to the rotation angle. To change. Thereby, the change of the irradiation range of the headlamp device at the time of banking of the saddle-ride type vehicle can be suppressed more smoothly.

  (10) The length between the left end of the left light-shielding surface and the right end of the right light-shielding surface in the vehicle left-right direction may be greater than the spread of light in the vehicle left-right direction at the position of the rotation axis.

  In this case, a change in the irradiation range of the headlamp device can be suppressed over a sufficiently wide range in the left-right direction of the vehicle. Therefore, it is possible to more smoothly suppress the change in the irradiation range of the headlamp device when banking the saddle-ride type vehicle while suppressing the increase in size of the headlamp device.

  (11) It further includes a reflecting member that reflects light from the light source and a lens that collects the light reflected by the reflecting member, and the light shielding member is light reflected by the reflecting member between the reflecting member and the lens. It may be arranged so as to block a part of.

  According to this configuration, after the light from the light source is reflected by the reflecting member, a part of the light is blocked by the light blocking member. In this case, since the light from the light source is collected by the lens, the light distribution of the headlamp device can be controlled efficiently. Therefore, it is possible to more efficiently suppress the change in the irradiation range of the headlamp device when banking the saddle-ride type vehicle while suppressing the increase in size of the headlamp device.

  (12) The light distribution of the headlamp device on the vertical wall surface defined at a position a predetermined distance away from the saddle-ride type vehicle is a boundary extending in the left-right direction as a boundary line indicating the boundary of the upper and lower edges of light and dark The left part of the line and the right part of the boundary line, the left part of the boundary line is formed by the right ridge line, the right part of the boundary line is formed by the left ridge line, the reflecting member has a focal point in front of the light source, The rotating shaft is disposed behind and below the focal point of the reflecting member, and the control unit is configured to block the light shielding member by the rotation driving unit so that the left part of the boundary line approaches the horizontal when the saddle-ride type vehicle is inclined leftward. When the saddle-ride type vehicle is tilted to the right, the light shielding member is rotated in the second rotation direction by the rotation drive unit so that the right part of the boundary line approaches the horizontal. Good.

  In this case, the upper edge of the light shielding member forms a contour. In this state, when the saddle-ride type vehicle tilts leftward, the light shielding member rotates in the first rotation direction so that the left part of the boundary line approaches the horizontal. Further, when the saddle riding type vehicle is tilted to the right, the light shielding member rotates in the second rotation direction so that the right part of the boundary line approaches the horizontal. Thereby, the change of the irradiation range of a headlamp apparatus can be suppressed. Therefore, it is possible to suppress a change in the irradiation range of the headlamp device when banking the saddle-ride type vehicle while suppressing an increase in the size of the headlamp device.

  (13) The light distribution of the headlamp device on the vertical wall surface defined at a position a predetermined distance away from the saddle-ride type vehicle is a boundary extending in the left-right direction as a boundary line indicating the boundary of the upper and lower edges of light and dark The left part of the line and the right part of the boundary line, the left ridge line forms the left part of the boundary line, the right ridge line forms the right part of the boundary line, and the reflecting member has a focal point in front of the light source. The rotating shaft is disposed in front of and above the focal point of the reflecting member, and the control unit is configured to block the light shielding member by the rotation driving unit so that the left part of the boundary line approaches the horizontal when the saddle riding type vehicle is inclined leftward. When the saddle riding type vehicle is tilted to the right, the light shielding member is rotated in the first rotation direction by the rotation driving unit so that the right part of the boundary line approaches the horizontal. Good.

  In this case, the lower edge of the light shielding member forms a contour. In this state, when the saddle-ride type vehicle tilts leftward, the light shielding member rotates in the second rotation direction so that the left part of the boundary line approaches the horizontal. Further, when the saddle riding type vehicle is tilted to the right, the light shielding member rotates in the first rotation direction so that the right part of the boundary line approaches the horizontal. Thereby, the change of the irradiation range of a headlamp apparatus can be suppressed. Therefore, it is possible to suppress a change in the irradiation range of the headlamp device when banking the saddle-ride type vehicle while suppressing an increase in the size of the headlamp device.

  (14) The control unit controls the rotation angle of the light shielding member by the rotation driving unit so that the angle from the right part of the boundary line to the left part of the boundary line increases as the bank angle of the saddle-ride type vehicle increases. Also good.

  In this case, as the saddle-ride type vehicle is greatly inclined to the left, the right part of the boundary line is inclined to the upper right, whereas the inclination of the left part of the boundary line is suppressed. In addition, as the saddle-ride type vehicle is greatly inclined to the right, the left part of the boundary line is greatly inclined to the upper left, whereas the inclination of the right part of the boundary line is suppressed. Therefore, the change of the irradiation range of the headlamp device can be suppressed. Therefore, it is possible to suppress a change in the irradiation range of the headlamp device when banking the saddle-ride type vehicle while suppressing an increase in the size of the headlamp device.

  (15) A saddle-ride type vehicle according to a second invention includes a vehicle body and a headlamp device according to the first invention provided on the vehicle body.

  In this saddle-ride type vehicle device, the above-described headlamp device is provided on the vehicle body. In the headlamp device, a light shielding member is arranged in front of the light source so that a part of light from the light source can be shielded by the left light shielding surface and the right light shielding surface arranged in the left-right direction of the vehicle. Based on the bank angle of the saddle-ride type vehicle, the light shielding member rotates in the first or second rotation direction opposite to each other around the rotation axis extending in the vehicle left-right direction by the rotation drive unit.

  On the left light shielding surface of the light shielding member, first to Nth left ridge lines (N is an integer of 2 or more) extend in the vehicle left-right direction and are arranged in this order in the first rotation direction. The distance between the first left ridge line and the rotation axis in the first left cross section is equal to the distance between the first left ridge line and the rotation axis in the second left cross section. The distance between the i-th left ridge line (i is an integer of 2 to N) and the rotation axis in the first left section is greater than the distance between the i-th left ridge line and the rotation axis in the second left section. Is also small.

  In the first left cross section, the distance between the i-th left ridge line and the rotation axis is smaller than the distance between the (i-1) -th left ridge line and the rotation axis. Furthermore, the angle formed by the straight line connecting the i-th left ridge line to the rotation axis in the first left cross-section and the straight line connecting the (i−1) -th left ridge line to the rotation axis is the second left cross-section. It is smaller than an angle formed by a straight line connecting the left ridge line of i to the rotation axis and a straight line connecting the (i-1) th left ridge line to the rotation axis.

  In this case, the i-th left ridge line is twisted with respect to the (i-1) -th left ridge line. Therefore, by rotating the light shielding member to a predetermined rotational position corresponding to the bank angle of the saddle-ride type vehicle, it is possible to realize a light distribution suitable for the bank angle using the left ridge line.

  On the right light shielding surface of the light shielding member, the first to Mth right ridge lines (M is an integer of 2 or more) extend in the vehicle left-right direction and are arranged in this order in the second rotation direction. The distance between the first right ridge line and the rotation axis in the first right section is equal to the distance between the first right ridge line and the rotation axis in the second right section. The distance between the j-th right ridge line (j is an integer of 2 to M) and the rotation axis in the first right section is greater than the distance between the j-th right ridge line and the rotation axis in the second right section. Is also small.

  In the first right section, the distance between the j-th right ridge line and the rotation axis is smaller than the distance between the (j−1) -th right ridge line and the rotation axis. Furthermore, the angle formed by the straight line connecting the jth right ridge line to the rotation axis in the first right cross section and the straight line connecting the (j−1) right ridge line to the rotation axis is the second right cross section. The angle is smaller than the angle formed by the straight line connecting the j right ridge line to the rotation axis and the straight line connecting the (j−1) th right ridge line to the rotation axis.

  In this case, the j-th right ridge line is twisted with respect to the (j-1) -th right ridge line. Therefore, by rotating the light shielding member to a predetermined rotation position corresponding to the bank angle of the saddle-ride type vehicle, it is possible to realize a light distribution suitable for the bank angle using the right ridge line.

  In this configuration, the light shielding member rotates in the second rotation direction from the first left ridge line in accordance with the bank angle of the saddle riding type vehicle, so that when the light shielding member is viewed from the rear, the contour of the light shielding member ( The slope of the left ridge that forms the upper or lower edge changes. Further, when the light shielding member rotates in the first rotation direction from the first right ridge line according to the bank angle of the saddle-ride type vehicle, the contour of the light shielding member (upper edge or The slope of the right ridge that forms the lower edge changes.

  Thereby, the change of the illumination range of the headlamp device is suppressed by changing the light distribution according to the left and right bank angles of the saddle-ride type vehicle using the left light shielding surface and the right light shielding surface of the light shielding member. According to said structure, the light distribution on either side can be changed with a single light shielding member. As a result, it is possible to suppress a change in the irradiation range of the headlamp device at the time of banking the saddle-ride type vehicle while suppressing an increase in the size of the headlamp device.

  ADVANTAGE OF THE INVENTION According to this invention, the change of the irradiation range at the time of the bank of a vehicle body can be suppressed, suppressing the enlargement of a headlamp apparatus.

1 is a left side view showing a motorcycle according to an embodiment of the present invention. FIG. 2 is a front view showing the motorcycle of FIG. 1. It is a schematic diagram which shows the structure of a headlamp apparatus. It is a typical cross section showing the 1st example of composition of a headlamp device. It is a typical cross section showing the 2nd example of composition of a headlamp device. It is a figure for demonstrating the shape of a light-shielding member. It is a figure for demonstrating the shape of a light-shielding member. It is the sectional view on the AA line and BB line of the light-shielding member of FIG.6 (b). It is CC sectional view taken on the line of the light shielding member of FIG.7 (b), and DD line sectional drawing. It is a figure for demonstrating the preferable determination method of a left ridgeline. It is a figure for demonstrating arrangement | positioning of a left virtual plane. It is a figure for demonstrating arrangement | positioning of a left virtual plane. It is a figure for demonstrating the preferable determination method of a right ridgeline. It is a figure for demonstrating arrangement | positioning of a right virtual plane. It is a figure for demonstrating arrangement | positioning of a right virtual plane. It is a figure which shows the change of an outline when a light shielding member is rotated in the 2nd rotation direction. It is a figure which shows the change of an outline when a light shielding member is rotated in the 2nd rotation direction. It is a figure which shows the change of an outline when a light shielding member is rotated in the 1st rotation direction. It is a figure which shows the change of an outline when a light shielding member is rotated in the 1st rotation direction. It is a figure which shows the light distribution of the headlamp apparatus on a vertical wall surface. It is a figure which shows the relationship between the bank angle of a motorcycle, and the light distribution of a headlamp apparatus. It is a schematic diagram which shows the structure of the headlamp apparatus which concerns on a 1st modification. It is a figure for demonstrating the shape of the light-shielding member in a 2nd modification. It is a figure for demonstrating the shape of the light-shielding member in a comparative example. It is a figure which shows the change of an outline when the light shielding member in a comparative example is rotated in the 2nd rotation direction.

  Hereinafter, a saddle-ride type vehicle according to an embodiment of the present invention will be described with reference to the drawings. In the following description, a motorcycle will be described as an example of a saddle-ride type vehicle. The saddle riding type vehicle according to the present embodiment is a vehicle in which the vehicle body is banked to the left when cornering in the left direction and the vehicle body is banked to the right when cornering in the right direction.

(1) Schematic Configuration of Motorcycle FIG. 1 is a left side view showing a motorcycle according to an embodiment of the present invention. FIG. 2 is a front view showing the motorcycle 200 of FIG. 1 and 2 show a state in which the motorcycle 200 stands upright with respect to the road surface. 1 and 2 and subsequent figures, the front-rear direction L, the left-right direction W, and the up-down direction H of the motorcycle 200 are indicated by arrows.

  In the following description, the direction in which the arrow points in the front-rear direction L is referred to as the front, and the opposite direction is referred to as the rear. In the left-right direction W, the direction in which the arrow heads is called left, and the opposite direction is called right. The direction in which the arrow is directed in the vertical direction H is referred to as the upper direction, and the opposite direction is referred to as the lower direction. In each figure, front, rear, left, right, upper, and lower are indicated by symbols FO, BA, LE, RI, UP, and LO, respectively. The direction here is defined with reference to the direction of the occupant on the motorcycle 200.

  As shown in FIG. 1, the motorcycle 200 includes a body frame 210 that extends in the front-rear direction. The body frame 210 includes a main frame 211 and a rear frame 212. The main frame 211 has a shape extending upward and forward. The rear part of the main frame 211 bends downward. The rear frame 212 is attached to the center portion and the rear portion of the main frame 211 in the front-rear direction L so as to extend rearward.

  A head pipe 213 extending downward and forward is provided at the front end of the main frame 211. A headlamp device 100 is provided in front of the head pipe 213. Details of the headlamp device 100 will be described later. As shown in FIG. 2, a left direction indicator lamp 261 and a right direction indicator lamp 262 are provided so as to protrude left and right from the headlamp device 100, respectively. Further, a left direction indicator lamp 263 and a right direction indicator lamp 264 are provided so as to protrude leftward and rightward from a rear cover 244 described later.

  As shown in FIG. 1, a front fork device 220 is attached to the head pipe 213 so as to be rotatable in the left-right direction. As shown in FIG. 2, the front fork device 220 includes a steering shaft (stem shaft) 221, a left fork pipe 222, a right fork pipe 223, a handle member 224, an under bracket 225, an upper bracket 226, and a front wheel 227.

  The steering shaft 221 is inserted into the head pipe 213 so as to extend downward and forward. The left fork pipe 222 and the right fork pipe 223 are disposed on the left side and the right side of the steering shaft 221, respectively. The left fork pipe 222 and the right fork pipe 223 are connected to the steering shaft 221 by an under bracket 225 and an upper bracket 226 thereabove.

  The front wheel 227 is rotatably supported between the lower part of the left fork pipe 222 and the lower part of the right fork pipe 223. The handle member 224 includes a left handle 224L and a right handle 224R. The handle member 224 is connected to the left fork pipe 222 and the right fork pipe 223. The front fork device 220 rotates with respect to the head pipe 213 when the handle member 224 is operated.

  As shown in FIG. 1, an engine 230 is provided near the lower end of the main frame 211. One end of the intake pipe 231 is attached to the intake port of the engine 230, and one end of the exhaust pipe 232 is attached to the exhaust port of the engine 230. A muffler 233 is attached to the other end of the exhaust pipe 232.

  The rear frame 212 is located at the top of the engine 230. A fuel tank 234 is supported by the rear frame 212 at a position above the engine 230. The seat 240 is supported by the rear frame 212 at a position behind the fuel tank 234. The seat 240 in this example is a seat in which two seats of two passengers are integrally formed. An occupant operating the motorcycle 200 can sit on the front portion of the seat 240. An occupant who does not operate the motorcycle 200 can sit on the rear portion of the seat 240.

  A rear arm 250 is provided so as to extend rearward from the lower portion of the main frame 211. The front end portion of the rear arm 250 is attached to the main frame 211 via a support shaft 250s. The rear end portion of the rear arm 250 rotatably holds the rear wheel 251 and the rear wheel driven sprocket 251s. A chain 252 is attached to the rear wheel driven sprocket 251s.

  A left side cover 242 and a right side cover 243 are attached so as to cover the outside of the rear frame 212 in the left-right direction W of the motorcycle 200. A rear cover 244 is attached to the lower part of the rear frame 212 so as to cover the entire upper part of the rear wheel 251 from above the rear wheel 251.

  As shown in FIG. 1, the main frame 211 is provided with a control device 270. The control device 270 is, for example, an ECU (Electronic Control Unit). The control device 270 may be a microcomputer. The control device 270 controls the electronic device including the headlamp device 100.

  The main frame 211 is provided with a detection unit 280 that detects a bank angle of the vehicle body frame 210 with respect to the vertical direction. Detection unit 280 includes an inclination detection sensor and a calculation unit. The tilt detection sensor is, for example, a triaxial angular velocity sensor. The tilt detection sensor may be, for example, an angular velocity sensor, or may be another type of tilt detection sensor.

  An operation portion 224s is provided in a portion of the handle member 224 near the left handle 224L. The operation unit 224s includes a switch for designating an operation mode of the headlamp device 100. The occupant can switch the operation mode of the headlamp device 100 between the low beam mode and the high beam mode by operating the operation unit 224s.

(2) Headlamp Device FIG. 3 is a schematic diagram showing the configuration of the headlamp device 100. As shown in FIG. 3, the headlamp device 100 includes a light source 110, a rotating shaft 120, a light shielding member 130, a rotation driving unit 140, a control unit 150, a reflecting member 160, and a lens 170.

  The light source 110 may be a halogen lamp, an LED (Light Emitting Diode), a light valve, or a light emitter other than those. The reflection member 160 is disposed so as to reflect light from the light source 110 forward. The lens 170 is, for example, a convex lens. The lens 170 condenses the light reflected by the reflecting member 160. In this case, since the light from the light source 110 is collected by the lens 170, the light distribution of the headlamp device 100 can be controlled efficiently.

  A rotating shaft 120 is disposed in front of the light source 110 and behind the lens 170. The rotating shaft 120 extends in the left-right direction W (FIG. 2). The light shielding member 130 is made of, for example, resin. The light shielding member 130 is disposed so that a part of the light reflected by the reflecting member 160 is shielded by the outer peripheral surface thereof. In addition, the light shielding member 130 can rotate around the rotating shaft 120. Details of the light shielding member 130 will be described later.

  The rotation drive unit 140 includes an actuator 141 and a rotation amount measuring device 142. The actuator 141 includes, for example, a motor. The rotation amount measuring instrument 142 includes, for example, a potentiometer or a rotary encoder. The rotation driving unit 140 may be a stepping motor, for example. The rotation drive unit 140 is disposed so as to rotate the light shielding member 130 in two opposite rotation directions around a rotation axis Ax extending in the left-right direction W (FIG. 2).

  The control unit 150 includes, for example, a CPU (Central Processing Unit) and a memory. The control unit 150 may be a microcomputer, for example. The control unit 150 is connected to the control device 270 of FIG. The function of the control unit 150 may be realized by the control device 270. In this case, the control unit 150 is not provided in the headlamp device 100. The control unit 150 controls the rotation driving unit 140 so that the light shielding member 130 rotates based on the bank angle detected by the detection unit 280 of FIG.

  4A and 4B are schematic cross-sectional views showing a first configuration example of the headlamp device 100. FIG. FIG. 4A shows the headlamp device 100 when the rotating shaft 120, the light shielding member 130, and the rotation driving unit 140 are not arranged. In the example of FIGS. 4A and 4B, the light source 221 is, for example, a halogen lamp, and emits light in all directions.

  As shown in FIGS. 4A and 4B, the reflecting member 160 is a reflector having a substantially elliptical cross section in part and opening forward. A reflective surface is formed on the inner surface of the reflective member 160. The reflecting member 160 has two focal points F1 and F2. The two focal points F1 and F2 are arranged in the front-rear direction L (FIG. 2), and the focal point F1 is located in front of the focal point F2. The light source 110 is disposed at the rear focal point F2. The lens 170 is disposed in front of the front focal point F1.

  As shown in FIG. 4B, the rotating shaft 120 of the light blocking member 130 is disposed slightly rearward and below the focal point F <b> 1 of the reflecting member 160. Hereinafter, the position of the light shielding member 130 in the first configuration example of the headlamp device 100 is referred to as a first position.

  In this arrangement, light is emitted from the light source 110 in all directions. The light emitted from the light source 110 is reflected forward by the reflecting member 160. The light reflected by the reflecting member 160 passes through the focal point F1 after passing over the light shielding member 130. Here, a part of the light reflected by the reflecting member 160 is blocked by the light blocking member 130. The light that has passed through the focal point F <b> 1 is collected by the lens 170, substantially parallelized, and emitted to the front of the motorcycle 200.

  5A and 5B are schematic cross-sectional views showing a second configuration example of the headlamp device 100. FIG. FIG. 5A shows the headlamp device 100 when the rotating shaft 120, the light shielding member 130, and the rotation driving unit 140 are not arranged. In the example of FIGS. 5A and 5B, the light source 221 is, for example, an LED, and is disposed so as to emit light downward.

  As shown in FIGS. 5A and 5B, the reflecting member 160 has a curved surface portion 161 and a flat surface portion 162. The curved surface portion 161 and the flat surface portion 162 may be formed integrally or may be formed separately. The curved surface portion 161 is located below the light source 110. The curved surface portion 161 has a reflective surface that is curved so as to face the front upper side. The plane part 162 is located in front of the light source 110. The plane part 162 has a planar reflecting surface facing downward. The plane part 162 reflects a part of the light reflected frontward and upward by the curved surface part 161 to the front. A focal point F <b> 1 is formed in front of the light source 110 by the curved surface portion 161 and the flat surface portion 162.

  As shown in FIG. 5B, the rotating shaft 120 of the light shielding member 130 is disposed slightly forward and above the focal point F <b> 1 of the reflecting member 160. Hereinafter, the position of the light shielding member 130 in the second configuration example of the headlamp device 100 is referred to as a second position.

  In this arrangement, light is emitted downward from the light source 110. The light emitted from the light source 110 is reflected forward by the curved surface portion 161 and the flat surface portion 162 of the reflecting member 160. The light reflected by the reflecting member 160 passes under the light shielding member 130 after passing through the focal point F1. Here, a part of the light reflected by the reflecting member 160 is blocked by the light blocking member 130. The light that has passed under the rotating shaft 120 is collected by the lens 170, made substantially parallel, and emitted to the front of the motorcycle 200.

(3) Light Shielding Member (a) Overall Configuration FIGS. 6 and 7 are diagrams for explaining the shape of the light shielding member 130. 6A and 7A show a left side view and a right side view of the light shielding member 130, respectively. 6B and 7B show a front view and a rear view of the light shielding member 130, respectively. As shown in FIGS. 6A and 6B, the light shielding member 130 is disposed so as to be rotatable in mutually opposite rotation directions R1 and R2 around the rotation axis Ax.

  As shown in FIGS. 6B and 7B, the light shielding member 130 has a left light shielding surface 130L and a right light shielding surface 130R arranged in the left-right direction W. The left light-shielding surface 130L and the right light-shielding surface 130R are arranged so that a part of the light from the light source 110 (FIG. 3) can be shielded. In the present embodiment, the length between the left end of the left light-shielding surface 130L and the right end of the right light-shielding surface 130R in the left-right direction W is larger than the spread of the light in the left-right direction W at the position of the rotary shaft 120.

  As shown in FIG. 6A, the left light shielding surface 130L includes two left light shielding portions 131L and 132L and a left plane 133L. As shown in FIG. 7A, the right light shielding surface 130R includes two right light shielding portions 131R and 132R and a right plane 133R. 6 and 7, the left light-shielding portion 131L is illustrated by a first dot pattern, the left light-shielding portion 132L is illustrated by a thick solid line, and the left plane 133L is illustrated by a thick dotted line. Further, the right light shielding portion 131R is illustrated by a second dot pattern, the right light shielding portion 132R is illustrated by a thick one-dot chain line, and the right plane 133R is illustrated by a thick two-dot chain line.

The left light-shielding surface 130L includes a plurality ((N + p) in this example) of left ridge lines 134L. Here, N is an integer of 2 or more, and p is an integer of 1 or more. The (N + p) left ridge lines 134L are referred to as left ridge lines 134L _{1 to} 134L _{N + p} , respectively. Similarly, the right light-shielding surface 130R has a plurality of (in this example, (M + q)) right ridge lines 134R. Here, M is an integer of 2 or more, and q is an integer of 1 or more. The (M + q) right ridge lines 134R are referred to as right ridge lines 134R _{1 to} 134R _{M + q} , respectively. Hereinafter, the shapes of the left light shielding surface 130L and the right light shielding surface 130R will be described.

(B) Left light shielding surface In order to describe the arrangement of the left ridge lines 134L _{1 to} 134L _{N + p} , two left cross sections 135L and 136L located within the left light shielding surface 130L and orthogonal to the rotation axis Ax are defined. The left cross section 136L is located to the right of the left cross section 135L. 8A and 8B are a cross-sectional view taken along the line AA and a cross-sectional view taken along the line BB of the light shielding member 130 shown in FIG. 6B, respectively.

  8A shows a left cross section 135L of the light shielding member 130, and FIG. 8B shows a left cross section 136L of the light shielding member 130. In this example, the left cross sections 135L and 136L are defined near the left end and the right end of the left light shielding surface 130L, respectively. Therefore, the left cross section 135L has a shape substantially equal to the left end surface of the left light shielding surface 130L. The left cross section 136L has a shape substantially equal to the cross section of the left light shielding surface 130L at the boundary with the right light shielding surface 130R.

As shown in FIGS. 8A and 8B, the left ridge lines 134L _{1 to} 134L _N extend in the left-right direction W and are arranged in this order in the rotation direction R1. Distance _{L L1} between the left ridge line 134L ₁ and the rotation axis Ax in the left section 135L is equal to the distance _{L R1} between the left ridge line 134L ₁ in the left section 136L and the rotation axis Ax. Distance _{L L2} between the rotation axis Ax and the left ridge line 134L _i in the left section 135L is smaller than the distance _{L R2} between the left ridge line 134L _i in the left section 136L and the rotation axis Ax. Here, i is an integer of 2 to N.

In the left section 135L, the distance _{L L2} between the rotation axis Ax and the left ridge line 134L _i is smaller than the distance _{L L3} between the left ridge line 134L _i-1 and the rotation axis Ax. In the left section 136L, the distance _{L R2} between the rotational axis Ax and the left ridge line 134L _i is equal to the distance _{L R3} between the left ridge line 134L _i-1 and the rotation axis Ax.

In the left cross section 135L, an angle formed by a straight line connecting the left ridge line 134L _i to the rotation axis Ax and a straight line connecting the left ridge line 134L _i-1 to the rotation axis Ax is θ _L1 . In the left cross section 135L, an angle formed by a straight line connecting the left ridge line 134L _i-1 to the rotation axis Ax and a straight line connecting the left ridge line 134L _i-2 to the rotation axis Ax is θ _L2 .

In the left cross section 136L, an angle between a straight line connecting the left ridge line 134L _i and the rotation axis Ax and a straight line connecting the left ridge line 134L _i-1 and the rotation axis Ax is θ _L3 . In the left cross section 136L, an angle between a straight line connecting the left ridge line 134L _i-1 and the rotation axis Ax and a straight line connecting the left ridge line 134L _i-2 and the rotation axis Ax is θ _L4 .

In the left cross section 135L, the angle θ _L1 is smaller than the angle θ _L2 . In the left cross section 136L, the angle θ _L3 is equal to the angle θ _L4 . Further, the angle θ _L1 in the left cross section 135L is smaller than the angle θ _L3 in the left cross section 136L. The angle θ _L2 in the left cross section 135L is smaller than the angle θ _L4 in the left cross section 136L.

Left ridge lines 134L _{1 to} 134L _N satisfying the above conditions are determined. The determined left ridge line 134L _i of the light shielding member 130 is twisted with respect to the left ridge line 134L _i−1 . A continuous curved surface (spline curved surface) including the left ridge lines 134L _{1 to} 134L _N is formed as the left light shielding portion 131L of the left light shielding surface 130L. Details of a preferable method for determining the left ridge lines 134L _{1 to} 134L _N will be described later.

The arrangement of the other left ridge line 134L will be described. As shown in FIGS. 8A and 8B, the left ridge lines 134L _{N + 1 to} 134L _{N + p} are arranged in this order from the left ridge line 134L _{1 in the} rotation direction R2, and are arranged in parallel with the left ridge line 134L ₁ . Distance _{L L4} between the left ridge line 134L _{N + n} and the rotation axis Ax in the left section 135L is equal to the distance _{L R4} between the left ridge line 134L _{N + n} in the left section 136L and the rotation axis Ax. Here, n is an integer of 1 to p. Partial cylindrical surface including a left ridge 134L ₁ and the left edge line _{134L N +} 1 _~134L N + _p is formed as a left shielding portions 132L of the left shielding surfaces 130L.

FIG. 6 (a), the (b), the left plane 133L is located on the opposite side to the left ridge line 134L ₁ with respect to the rotational axis Ax. Further, the left plane 133L is disposed in parallel to the rotation axis Ax. The left ridge lines 134L _{2 to} 134L _N are arranged in a region from the left ridge line 134L ₁ to the left plane 133L in the rotation direction R1.

As shown in FIG. 8 (a), (b) , the left section 135L, the 136L, left plane 133L is orthogonal to a straight line L1 passing through the rotational axis Ax and the left ridge line 134L _1. Further, as shown in FIG. 6 (a), the shortest distance _{L b} between the left plane 133L and the rotation axis Ax is smaller than the shortest distance _{L a} between the left ridge line 134L ₁ and the rotation axis Ax.

(C) Right light shielding surface In order to describe the arrangement of the right ridge lines 134R _{1 to} 134R _{M + q} , two right cross sections 135R and 136R that are located within the range of the right light shielding surface 130R and orthogonal to the rotation axis Ax are defined. The right cross section 136R is located to the left of the right cross section 135R. 9A and 9B are a cross-sectional view taken along the line CC and a cross-sectional view taken along the line DD of the light shielding member 130 shown in FIG. 7B, respectively.

  9A, the right cross section 135R of the light shielding member 130 appears, and in FIG. 9B, the right cross section 136R of the light shielding member 130 appears. In this example, the right cross sections 135R and 136R are defined near the right end and the left end of the right light shielding surface 130R, respectively. Therefore, the right cross section 135R has a shape that is substantially equal to the right end surface of the right light shielding surface 130R. The right cross section 136R has a shape substantially equal to the cross section of the right light shielding surface 130R at the boundary with the left light shielding surface 130L.

FIG. 9 (a), the (b), the right edge line 134R ₁ ~134R _M is arranged in the rotation direction R2 extending and in this order right and left direction W. Distance _{R R1} between the right ridge line 134R ₁ and the rotation axis Ax in the right section 135R is equal to the distance _{R L1} between the right ridge line 134R ₁ in the right section 136R and the rotation axis Ax. The distance R _R2 between the right ridge line 134R _j and the rotation axis Ax in the right cross section 135R is smaller than the distance R _L2 between the right ridge line 134R _j and the rotation axis Ax in the right cross section 136R. Here, j is an integer of 2 to M.

In the right section 135R, the distance _{R R2} between the right ridge line 134R _j and the rotation axis Ax is smaller than the distance _{R R3} between the right ridge line 134R _j-1 and the rotation axis Ax. In the right section 136R, the distance _{R L2} between the right ridge line 134R _j and the rotation axis Ax is equal to the distance _{R L3} between the right ridge line 134R _j-1 and the rotation axis Ax.

In the right section 135R, the angle between the straight line connecting the to the rotational axis Ax from the straight line and the right ridge line 134R _j-1 connecting the right edge lines 134R _j to the rotational axis Ax and theta _R1. In the right section 135R, the angle between the straight line connecting the to the rotational axis Ax from the straight line and the right ridge line 134R _j-2 connecting the right edge lines 134R _j-1 to the rotational axis Ax and theta _R2.

In the right section 136R, the angle between the straight line connecting the to the rotational axis Ax from the straight line and the right ridge line 134R _j-1 connecting the right edge lines 134R _j to the rotational axis Ax and theta _R3. In the right cross section 136R, an angle formed by a straight line connecting the right ridge line 134R _j-1 to the rotation axis Ax and a straight line connecting the right ridge line 134R _j-2 to the rotation axis Ax is defined as θ _R4 .

In the right cross section 135R, the angle θ _R1 is smaller than the angle θ _R2 . In the right cross section 136R, the angle θ _R3 is equal to the angle θ _R4 . Further, the angle θ _R1 in the right cross section 135R is smaller than the angle θ _R3 in the right cross section 136R. The angle θ _R2 in the right cross section 135R is smaller than the angle θ _R4 in the right cross section 136R.

Right ridge lines 134R _{1 to} 134R _M satisfying the above conditions are determined. The determined right ridge line 134R _j is twisted with respect to the right ridge line 134R _j-1 . Continuous curved surface including a right ridge 134R ₁ ~134R _M (spline surface) is formed as a right-shielding portion 131R of the right shielding surfaces 130R. It will be described in detail later preferred method of determining the right ridge line 134R ₁ ~134R _M.

The arrangement of the other right ridgeline 134R will be described. As shown in FIGS. 9A and 9B, the right ridge lines 134R _{M + 1 to} 134R _{M + q} are arranged in this order from the right ridge line 134R _{1 in the} rotation direction R1 and are arranged in parallel with the right ridge line 134R ₁ . The distance R _R4 between the right ridge line 134R _{M + m} and the rotation axis Ax in the right cross section 135R is equal to the distance R _L4 between the right ridge line 134R _{M + m} and the rotation axis Ax in the right cross section 136R. Here, m is an integer of 1 to q. Partial cylindrical surface including a right ridge 134R ₁ and the right ridge line _{134R M +} 1 _~134R M + _q is formed as a right-shielding portion 132R of the right shielding surfaces 130R.

As shown in FIG. 7 (a), (b) , right plane 133R is positioned on the opposite side of the right ridge line 134R ₁ with respect to the rotational axis Ax. Further, the right plane 133R is disposed in parallel to the rotation axis Ax. Right ridge 134R ₂ ~134R _M is disposed in a region from the right edge line 134R ₁ to the right plane 133R in the rotational direction R2.

As shown in FIG. 9 (a), (b) , the right section 135R, the 136R, right plane 133R is orthogonal to the straight line L2 passing through the rotational axis Ax and the right ridge line 134R _1. Further, as shown in FIG. 7 (a), the shortest distance _{R b} between the right plane 133R and the rotation axis Ax is smaller than the shortest distance _{R a} between the right ridge line 134R ₁ and the rotation axis Ax. In this example, the distances R _a and R _b are equal to the distances L _a and L _b in FIG.

(D) as shown in the left shielding surfaces and the right shielding surface and the connecting portion FIG. 6 (b) and FIG.. 7 (b), in the this embodiment, mutually consecutive and left ridge 134L ₁ and the right ridge line 134R ₁ To do. Further, the left plane 133L and the right plane 133R are continuous with each other.

Further, in the present embodiment, the integers N and M are equal to each other, and the integers p and q are equal to each other. As shown in FIG. 7 (b), the right end of the left ridge line _{134L N + 1 ~134L N + p} , is connected to the left end of the right ridge line 134R ₂ ~134R _{p + 1.} As shown in FIG. 6B, the left ends of the right ridge lines 134R _{M + 1 to} 134R _{M + q} are connected to the right ends of the left ridge lines 134L _{2 to} 134L _{q + 1} , respectively.

(4) Determination method of left ridge line and right ridge line FIG. 10 is a diagram for explaining a preferable determination method of the left ridge lines 134L _{1 to} 134L _N. As shown in FIG. 10, a left virtual cylinder 137L extending in the left-right direction W and having the rotation axis Ax as the center line is defined. Further, N left virtual planes 138L arranged in the rotation direction R1 around the rotation axis Ax are defined. The N left virtual planes 138L are referred to as left virtual planes 138L _{1 to} 138L _N , respectively. In FIG. 10, the left virtual planes 138L _{1 to} 138L ₄ are illustrated by a solid line, a dotted line, a one-dot chain line, and a two-dot chain line. The same applies to FIGS. 11 and 12 below.

11 and 12 are diagrams for explaining the arrangement of the left virtual planes 138L _{1 to} 138L _N. As shown in FIG. 11A, the left virtual plane 138L ₁ is a tangent plane of the left virtual cylinder 137L. Line appearing on the left virtual plane 138L ₁ as the contact portion of the left virtual cylinder 137L is determined as the left ridge 134L _1.

As shown in FIG. 11B, the left virtual plane 138L ₂ is obtained by rotating and tilting the left virtual plane 138L ₁ . Specifically, the center first to angularly rotate the left virtual plane 138L ₁ in the rotation direction R1 in the rotation axis Ax. Also, closer to the left edge of the left virtual plane 138L ₁ as the angle of the left virtual plane 138L ₂ with respect to the rotation axis Ax becomes the second angle greater than the angle of the left virtual plane 138L ₁ with respect to the rotation axis Ax to the rotation axis Ax. Intersection line between the left virtual plane 138L ₂ and the left virtual plane 138L ₁ is determined as the left ridge 134L _2. In FIG. 11 (b), the left edge line 134L ₂ is shown in dotted lines. The same applies to FIGS. 12A and 12B.

As shown in FIG. 12 (a), the left virtual plane 138L ₃ obtained by the rotation and tilt of the left virtual plane 138L _2. Specifically, the center first to angularly rotate the left virtual plane 138L ₂ in the rotation direction R1 in the rotation axis Ax. Also, closer to the left edge of the left virtual plane 138L ₂ so that the angle of the left virtual plane 138L ₃ with respect to the rotation axis Ax increases the second angle than the angle of the left virtual plane 138L ₂ relative to the rotational axis Ax in the rotation axis Ax. An intersection line between the left virtual plane 138L ₃ and the left virtual plane 138L ₂ is determined as the left ridge line 134L ₃ . In FIG. 12 (a), the left edge line 134L ₃ is illustrated by a dashed line. The same applies to FIG.

As shown in FIG. 12 (b), the left virtual plane 138L ₄ is obtained by the rotation and tilt of the left virtual plane 138L _3. Specifically, the center first to angularly rotate the left virtual plane 138L ₃ in the rotation direction R1 in the rotation axis Ax. Also, closer to the left edge of the left virtual plane 138L ₃ as the angle of the left virtual plane 138L ₄ increases the second angle than the angle of the left virtual plane 138L ₃ with respect to the rotational axis Ax in the rotation axis Ax with respect to the rotation axis Ax. An intersection line between the left virtual plane 138L ₄ and the left virtual plane 138L ₃ is determined as the left ridge line 134L ₄ . In FIG. 12 (b), the left edge line 134L ₄ is illustrated by a two-dot chain line.

Thus, the left virtual plane 138L _i is obtained by the rotation and the inclination of the left virtual plane 138L _i-1 . An intersection line between the left virtual plane 138L _i and the left virtual plane 138L _i-1 is determined as the left ridge line 134L _i . In the present embodiment, the first angle is, for example, 10 degrees, and the second angle is, for example, 2 degrees.

Figure 13 is a diagram for explaining a preferred method for determining the right ridge line 134R ₁ ~134R _M. As shown in FIG. 13, a right virtual cylinder 137R extending in the left-right direction W and having the rotation axis Ax as a center line is defined. Further, M right virtual planes 138R arranged in the rotation direction R2 around the rotation axis Ax are defined. The M right virtual planes 138R are referred to as right virtual planes 138R _{1 to} 138R _M , respectively. In FIG. 13, the right virtual planes 138R _{1 to} 138R ₄ are illustrated by a solid line, a dotted line, a one-dot chain line, and a two-dot chain line. The same applies to FIGS. 14 and 15 below.

14 and 15 are views for explaining the arrangement of the right virtual plane 138R ₁ ~138R _M. As shown in FIG. 14A, the right virtual plane 138R ₁ is a tangent plane of the right virtual cylinder 137R. Line appearing on the right virtual plane 138R ₁ is determined as a right ridge 134R ₁ as the contact portion of the right virtual cylinder 137R.

As shown in FIG. 14 (b), the right virtual plane 138R ₂ is obtained by the rotation and tilt of the right virtual plane 138R _1. Specifically, about the right virtual plane 138R ₁ to the third angular rotation in the rotational direction R2 to the rotation axis Ax. Also, closer to the right edge of the right virtual plane 138R ₁ as the angle of the right virtual plane 138R ₂ increases fourth angle than the angle of the right virtual plane 138R ₁ with respect to the rotation axis Ax to the rotation axis Ax with respect to the rotation axis Ax. Right virtual plane 138R ₂ and the line of intersection of the right virtual plane 138R ₁ is determined as a right ridge 134R _2. In FIG. 14 (b), the right edge line 134R ₂ is shown in dotted lines. The same applies to FIGS. 15A and 15B.

As shown in FIG. 15 (a), the right virtual plane 138R ₃ obtained by the rotation and tilt of the right virtual plane 138R _2. Specifically, about the right virtual plane 138R ₂ to the third angular rotation in the rotational direction R2 to the rotation axis Ax. Also, closer to the right edge of the right virtual plane 138R ₂ as the angle of the right virtual plane 138R ₃ increases fourth angle than the angle of the right virtual plane 138R ₂ relative to the rotational axis Ax in the rotation axis Ax with respect to the rotation axis Ax. Intersection line between the right virtual plane 138R ₃ and the right virtual plane 138R ₂ is determined as a right ridge 134R _3. In FIG. 15 (a), the right edge line 134R ₃ is illustrated by a dashed line. The same applies to FIG. 15B.

As shown in FIG. 15 (b), the right virtual plane 138R ₄ is obtained by the rotation and tilt of the right virtual plane 138R _3. Specifically, to a third angular rotation of the right virtual plane 138R ₃ around a rotation axis Ax in the direction of rotation R2. Further, the angle of the right virtual plane 138R ₄ closer to the right edge of the right virtual plane 138R ₃ than the angle of the fourth angle larger as the right virtual plane 138R ₃ with respect to the rotational axis Ax in the rotation axis Ax with respect to the rotation axis Ax. Intersection line between the right virtual plane 138R ₄ and the right virtual plane 138R ₃ is determined as a right ridge 134R _4. In FIG. 15 (b), the right edge line 134R ₄ is illustrated by a two-dot chain line.

Thus, the right virtual plane 138R _j is obtained by the rotation and the inclination of the right virtual plane 138R _j-1 . An intersection line between the right virtual plane 138R _j and the right virtual plane 138R _j-1 is determined as the right ridge line 134R _j . In the present embodiment, the third angle is, for example, 10 degrees, and the fourth angle is, for example, 2 degrees.

According to the method of determining, it can readily determine a light distribution capable of realizing the left ridge 134L ₁ ~134L _N and right ridge 134R ₁ ~134R _M suitable for the bank angle of the motorcycle 200.

(5) Change in Contour of Light Shielding Member FIGS. 16 and 17 are diagrams showing changes in the contour when the light shielding member 130 is rotated in the rotation direction R2. 18 and 19 are diagrams showing changes in the contour when the light shielding member 130 is rotated in the rotation direction R1. In the examples of FIGS. 16 to 19, the light shielding member 130 is disposed at the first position shown in FIG. In the left part of FIGS. 16A to 19C, the light shielding member 130 in the rear view is shown. Also, the right part of FIGS. 16A to 17C shows a light shielding member 130 in the left side view, and the right part of FIGS. 18A to 19C shows the light shielding member in the right side view. Member 130 is shown.

  A state where the rotation angle of the light shielding member 130 is 0 degree is defined as an initial state. 16 (a) to 16 (c) and FIGS. 17 (a) to 17 (c) are respectively 0 degrees, 40 degrees, 80 degrees, 120 degrees, 160 degrees and 180 degrees in the rotation direction R2 from the initial state. The light shielding member 130 when rotated is shown. 18 (a) to 18 (c) and 19 (a) to 19 (c) are respectively 0 degrees, 40 degrees, 80 degrees, 120 degrees, 160 degrees and 180 degrees in the rotation direction R1 from the initial state. The light shielding member 130 when rotated is shown.

As shown in FIG. 16 (a) and FIG. 18 (a), the initial state, the rear view, left ridge 134L ₁ and right ridge 134R ₁ forms a top edge of the contour of the light blocking member 130. Here, the upper edge of the contour of the light blocking member 130 formed of the left ridge 134L ₁ and right ridge 134R ₁ is parallel to the rotation axis Ax. Distance from the rotation axis Ax to the upper edge of the contour of the light blocking member 130 is L _a.

As shown in FIGS. 16B to 17A, the light shielding member 130 is rotated in the rotation direction R2 from the initial state. Until the rotation angle in the rotation direction R2 reaches the first upper limit angle, the left ridge line 134L _i and the right ridge line 134R _{M + m} form the upper edge of the contour of the light shielding member 130. Alternatively, the left light shielding portion 131L between the two adjacent left ridge lines 134L _i and 134L _i-1 and the right light shielding portion 131R between the two adjacent right ridge lines 134R _{M + m} and 134R _{M + m−1} are the upper edges of the contour of the light shielding member 130 Form. In this example, the first upper limit angle is 130 degrees.

In the rear view, the left ridge line 134L _i (or the left light-shielding portion 131L) forming the contour is a straight line descending to the left. As the rotation angle of the light shielding member 130 in the rotation direction R2 increases, the inclination angle formed by the left ridge line 134L _i that sequentially forms the contour with respect to the rotation axis Ax increases. In this example, until the rotation angle of the light shielding member 130 in the rotation direction R2 reaches the first upper limit angle, the left ridge line 134L _i that sequentially forms the contour at a rate of 2 degrees per 10 degrees of the rotation angle of the light shielding member 130. Increases the inclination angle formed by the rotation axis Ax.

On the other hand, in the rear view, the right ridge line 134R _{M + m} (or the right light shielding portion 132R) forming the contour is a straight line parallel to the rotation axis Ax. Even if the rotation angle of the light shielding member 130 in the rotation direction R2 increases, the inclination angle formed by the right ridge line 134R _{M + m} that sequentially forms the contour with respect to the rotation axis Ax does not change. Therefore, the right ridge line 134R _{M + m} is maintained in parallel with the rotation axis Ax. The distance from the rotation axis Ax to the right ridge 134R _{M + m} for forming the contour is _{L a.}

As shown in FIGS. 18B to 19A, the light shielding member 130 is rotated in the rotation direction R1 from the initial state. Until the rotation angle in the rotation direction R1 reaches the second upper limit angle, the right ridge line 134R _j and the left ridge line 134L _{N + n} form the upper edge of the contour of the light shielding member 130. Alternatively, the right light shielding portion 131R between two adjacent right ridge lines 134R _j and 134R _j−1 and the left light shielding portion 132L between two adjacent left ridge lines 134L _{N + n} and 134L _{N + n−1} are the upper edges of the contour of the light shielding member 130 Form. In this example, the second upper limit angle is 130 degrees.

In the rear view, the right ridge line 134R _j (or the right light-shielding portion 131R) forming the contour is a straight line descending to the right. As the rotation angle of the light shielding member 130 in the rotation direction R1 increases, the inclination angle formed by the right ridge line 134R _j that sequentially forms the contour with respect to the rotation axis Ax increases. In this example, until the rotation angle of the light shielding member 130 in the rotation direction R1 reaches the second upper limit angle, the right ridgeline 134R _j that sequentially forms the contour at a rate of 2 degrees per 10 degrees of the rotation angle of the light shielding member 130. Increases an inclination angle formed by the rotation axis Ax with respect to the rotation axis Ax.

On the other hand, in the rear view, the left ridge line 134L _{N + n} (or the left light shielding portion 132L) forming the contour is a straight line parallel to the rotation axis Ax. Even when the rotation angle of the light shielding member 130 in the rotation direction R1 increases, the inclination angle formed by the left ridge line 134L _{N + n} that sequentially forms the contour with respect to the rotation axis Ax does not change. Therefore, the left ridgeline 134L _{N + n} is maintained parallel to the rotation axis Ax. The distance from the rotation axis Ax to the left ridge 134L _{N + n} forming the outline is _{L a.}

A state where the rotation angle of the light shielding member 130 is 180 degrees is referred to as an inverted state. As shown in FIGS. 17C and 19C, in the inverted state, the left plane 133L and the right plane 133R form the upper edge of the contour of the light shielding member 130 in the rear view. Here, the upper edge of the contour of the light shielding member 130 composed of the left plane 133L and the right plane 133R is parallel to the rotation axis Ax. Distance from the rotation axis Ax to the upper edge of the contour of the light blocking member 130 is L _b.

(6) Change of light distribution (a) Low beam mode and high beam mode A part of the light emitted from the light source 110 in FIG. In this state, the light distribution of light emitted from the headlamp device 100 changes by controlling the rotation angle of the light shielding member 130. Here, a virtual vertical wall surface is defined at a position away from the motorcycle 200 by a predetermined distance.

  FIG. 20 is a diagram illustrating the light distribution of the headlamp device 100 on the vertical wall surface. 20A shows the light distribution on the vertical wall surface SC in the low beam mode, and FIG. 20B shows the light distribution on the vertical wall surface SC in the high beam mode. 20A and 20B, the irradiation range of light from the headlamp device 100 is indicated by a hatching pattern. As shown in FIG. 20A, the light distribution of the headlamp device 100 on the vertical wall surface SC is such that the boundary left side LB and the right side of the boundary extend in the left-right direction W as the boundary indicating the boundary between the upper and lower edges of the light and dark. Has RB.

  In the present embodiment, the occupant can selectively switch between the low beam mode and the high beam mode of the headlamp device 100 by operating the operation unit 224s of FIG. When the low beam mode is selected, the control unit 150 of FIG. 3 controls the rotation driving unit 140 so that the rotation angle of the light shielding member 130 is 0 degree. When the high beam mode is selected, the control unit 150 controls the rotation driving unit 140 so that the rotation angle of the light shielding member 130 is 180 degrees.

As described above, the distance _{L a} in FIG. 6 (a) greater than the distance _{L b.} Therefore, when the rotation angle of the light shielding member 130 is 0 degree, the light shielding area by the light shielding member 130 is larger than the light shielding area by the light shielding member 130 when the rotation angle of the light shielding member 130 is 180 degrees. In this case, only the upper part of the light from the light source 110 passes through the lens 170 in FIG. 3 without being blocked by the light blocking member 130. The light that has passed through the lens 170 is emitted as a low beam to the front lower side of the headlamp device 100 as shown in FIG.

  On the other hand, when the rotation angle of the light shielding member 130 is 180 degrees, the light shielding area by the light shielding member 130 is smaller than the light shielding area by the light shielding member 130 when the rotation angle of the light shielding member 130 is 0 degree. In this case, the light from the light source 110 passes through the lens 170 with little or no light blocking by the light blocking member 130. The light transmitted through the lens 170 is emitted as a high beam in front of the headlamp device 100 as shown in FIG.

  According to this configuration, the low beam can be easily generated by setting the rotation angle of the light shielding member 130 to 0 degree. Further, by setting the rotation angle of the light shielding member 130 to 180 degrees, a high beam can be easily generated. Thus, by rotating the light shielding member 130, it is possible to easily switch between the high beam mode and the low beam mode while suppressing an increase in the size of the vehicle.

(B) Light distribution control during banking In the following description, the light shielding member 130 is disposed at the first position in FIG. In this case, the light shielding member 130 is located in front of the focal point F1. Therefore, the boundary line left portion LB is formed by the right ridge line 134R, and the boundary line right portion RB is formed by the left ridge line 134L.

  When the motorcycle 200 is banked to the left, the control unit 150 in FIG. 3 rotates the light shielding member 130 in the rotation direction R1 by the rotation driving unit 140 so that the boundary line left part LB approaches the horizontal. Further, when the motorcycle 200 is banked to the right, the control unit 150 causes the rotation driving unit 140 to rotate the light shielding member 130 in the rotation direction R2 so that the boundary line right part RB approaches the horizontal. In the present embodiment, the rotation angle of the light shielding member 130 in the rotation direction R1 is five times the bank angle to the left of the motorcycle 200, and the rotation angle of the light shielding member 130 in the rotation direction R2 is the motorcycle 200. It is controlled to be 5 times the bank angle to the right of.

  When the light shielding member 130 is disposed at the second position in FIG. 5B, the light shielding member 130 is located behind the focal point F1. Therefore, the left boundary line LB forms the boundary line left portion LB, and the right edge line 134R forms the boundary line right portion RB. When the motorcycle 200 is banked to the left, the control unit 150 causes the rotation driving unit 140 to rotate the light shielding member 130 in the rotation direction R2 so that the boundary line left part LB approaches the horizontal. Further, when the motorcycle 200 is banked to the right, the control unit 150 causes the rotation driving unit 140 to rotate the light shielding member 130 in the rotation direction R1 so that the boundary line right part RB approaches the horizontal.

  FIG. 21 is a diagram showing the relationship between the bank angle of the motorcycle 200 and the light distribution of the headlamp device 100. FIG. 21A shows an irradiation range of light emitted from the headlamp device 100 to the vertical wall surface SC. FIGS. 21B and 21C show the irradiation range of light emitted from the headlamp device 100 to the road surface and its periphery when the motorcycle 200 is traveling on the road surface. In FIG. 21C, the light distribution control in this embodiment is not performed.

  21A to 21C, the irradiation range of light from the headlamp device 100 is indicated by a hatching pattern. Further, in FIGS. 21A to 21C, the light irradiation range in a state where the bank angle to the left is 10 degrees is shown in the upper part, and the bank angle to the left is 20 degrees in the lower part. The light irradiation range is shown.

When the motorcycle 200 is banked 10 degrees to the left, the light shielding member 130 rotates, for example, in the 50-degree rotation direction R1. In this case, as described above, in the rear view, the right ridge line 134R _j that forms the contour of the light shielding member 130 is inclined downward and the left ridge line 134L _{N + n} that forms the contour of the light shielding member 130 is parallel to the rotation axis Ax. Maintained. Therefore, as shown in the upper part of FIG. 21 (a), the right boundary portion RB is maintained parallel to the left-right direction W on the vertical wall surface SC, and the left left boundary portion LB is inclined leftward with respect to the left-right direction W. To do.

  When the above light distribution control is not performed, when banking the motorcycle 200 to the left, as shown in the upper part of FIG. 21 (c), the boundary left part LB and the boundary right part RB are lowered to the left. Inclined to. Thereby, the irradiation distance to the road surface on the left front of the motorcycle 200 and the vicinity thereof is shortened. On the other hand, when the light distribution control is performed, when banking the motorcycle 200 to the left, as shown in the upper part of FIG. 21 (b), the boundary right portion RB is inclined downwardly to the left and the boundary line left The part LB becomes substantially horizontal. Thereby, the irradiation distance to the road surface on the left front of the motorcycle 200 and the vicinity thereof is increased.

When the motorcycle 200 is banked 20 degrees to the left, the light shielding member 130 rotates, for example, 100 degrees in the rotation direction R1. In this case, in the rear view, the right ridge line 134R _j forming the contour of the light shielding member 130 is further inclined downward and the left ridge line 134L _{N + n} forming the contour of the light shielding member 130 is maintained parallel to the rotation axis Ax. For this reason, as shown in the lower part of FIG. 21A, the boundary line right portion RB is maintained in parallel with the left-right direction W on the vertical wall surface SC, and the boundary line left portion LB is further inclined to the left.

  When the above light distribution control is not performed, when banking the motorcycle 200 to the left, as shown in the lower part of FIG. 21C, the boundary left part LB and the boundary right part RB are further left. Inclined downward. Thereby, the irradiation distance to the road surface on the left front of the motorcycle 200 and the vicinity thereof is further shortened. On the other hand, when the light distribution control is performed, when banking the motorcycle 200 to the left, as shown in the lower part of FIG. 21 (b), the boundary right portion RB is further inclined downward to the left and the boundary line The left part LB becomes substantially horizontal. Thereby, the irradiation distance to the road surface on the left front of the motorcycle 200 and the vicinity thereof is increased.

  When the motorcycle 200 is banked to the right, the control unit 150 is the same as when the motorcycle 200 is banked to the left, except that the light shielding member 130 is rotated in the rotation direction R2 instead of the rotation direction R1. Take control.

  As described above, the control unit 150 rotates the light shielding member 130 so that the angle from the boundary right part RB to the boundary left part LB increases in the clockwise direction as the bank angle of the motorcycle 200 increases. Control the angle. In this case, the larger the motorcycle 200 is banked to the left, the more the boundary line right part RB is inclined to the upper right, whereas the inclination of the boundary line left part LB is suppressed. Further, the larger the motorcycle 200 is banked to the right, the greater the boundary left LB is inclined to the upper left, whereas the inclination of the boundary right RB is suppressed. As a result, the left and right light distribution can be independently changed according to the bank angle of the motorcycle 200.

In the present embodiment, as shown in FIGS. 6 and 7, the left ridge line 134L ₁ and the right ridge line 134R ₁ are continuous with each other. Therefore, regardless of whether the motorcycle 200 is banked to the left or right, the light distribution member suitable for the bank angle is obtained by rotating the light shielding member 130 in the rotation direction R1 or the rotation direction R2 from the initial state of the low beam mode. Distribution can be realized quickly.

Here, in the rear view, as the rotation angle of the light shielding member 130 from the initial state in the rotation direction R2 increases, the inclination angle formed by the left ridge line 134L _i that sequentially forms the contour with respect to the rotation axis Ax increases. Therefore, the light shielding area on the left light shielding surface 130L becomes smaller as the light shielding member 130 rotates in the rotation direction R2. On the other hand, in a rear view, as the rotational angle of the light blocking member 130 from the initial state to the rotational direction R1 increases, right ridge 134R _j forming the sequential contour tilt angle increases to respect to the rotation axis Ax. Therefore, the light shielding area on the right light shielding surface 130R becomes smaller as the light shielding member 130 rotates in the rotation direction R1.

  According to said structure, the rotation angle of the light shielding member 130 and the bank angle of the motorcycle 200 can be matched easily. In this example, the rotation angle of the light blocking member 130 is associated with five times the bank angle of the motorcycle 200, but is not limited thereto. The rotation angle of the light shielding member 130 may be associated with an arbitrary ratio of the bank angle of the motorcycle 200.

(7) In the motorcycle 200 according to the effect the present embodiment of the embodiment, the light shielding member 130 is rotated from the left edge line 134L ₁ in accordance with the bank angle in the rotational direction R2, in rear view, the light blocking member 130 the inclination of the left ridge 134L ₂ ~134L _N is changed to form a contour (upper or lower edge). Further, by the light shielding member 130 rotates from the right edge line 134R ₁ in accordance with the bank angle in the rotational direction R1, in rear view, right ridge 134R ₂ ~134R forming the contour of the light blocking member 130 (upper edge or lower edge) The slope of _M changes.

  Thereby, by using the left light shielding surface 130 </ b> L and the right light shielding surface 130 </ b> R of the light shielding member 130, the light distribution distribution is changed according to the left and right bank angles of the motorcycle 200, thereby suppressing the change in the irradiation range of the headlamp device 100. Is done. According to the above configuration, the left and right light distribution can be changed by the single light shielding member 130. As a result, it is possible to suppress a change in the irradiation range of the headlamp device 100 when banking the motorcycle 200 while suppressing an increase in the size of the headlamp device 100.

Further, in the above embodiment, the left shielding portions 131L is spline surface including left ridge 134L ₁ ~134L _N. Therefore, when the light shielding member 130 rotates in the rotation direction R2, the inclination of the left ridge lines 134L _{1 to} 134L _N forming the outline (upper edge or lower edge) of the light shielding member 130 is linearly with respect to the rotation angle in the rear view. Change. Similarly, right-shielding portion 131R is spline surface including the right ridge line 134R ₁ ~134R _M. Therefore, when the light shielding member 130 rotates in the rotation direction R1, in rear view, linearly inclination of the right ridge line 134R ₁ ~134R _M to form a contour of the light blocking member 130 (upper edge or lower edge) of relative rotation angle Change. Thereby, the change of the irradiation range of headlamp device 100 at the time of banking of motorcycle 200 can be more smoothly suppressed.

Further, in this embodiment, the left section 135L in 136L, left plane 133L is perpendicular to the straight line passing through the rotational axis Ax and the left ridge line 134L _1. Similarly, right section 135R, the 136R, right plane 133R are orthogonal to the straight line passing through the rotational axis Ax and the right ridge line 134R _1. In this case, by rotating the light shielding member 130 by 180 degrees, it is possible to easily switch between the low beam mode and the high beam mode while suppressing an increase in the size of the vehicle.

The area larger in the left shielding surfaces 130L between the left ridge line 134L ₁ and the left plane 133L of the rotating member is secured. Therefore, it becomes possible to provide more 134L ₂ to 134L _N on the left light shielding surface 130L. The area large right shielding surfaces 130R between the right ridge line 134R ₁ and the right plane 133R of the rotating member is secured. Therefore, it is possible to provide a more right ridge 134R ₂ ~134R _M right shielding surfaces 130R. Thereby, the left light shielding surface 130L and the right light shielding surface 130R approach a smoother curved surface.

Therefore, when the light shielding member 130 rotates in the rotation direction R2, the inclinations of the left ridge lines 134L _{1 to} 134L _N forming the outline (upper edge or lower edge) of the light shielding member 130 in a rear view are linear with respect to the rotation angle. Change. Further, when the light shielding member 130 rotates in the rotation direction R1, in rear view, linearly inclination of the right ridge line 134R ₁ ~134R _M to form a contour of the light blocking member 130 (upper edge or lower edge) of relative rotation angle Change. Thereby, the change of the irradiation range of headlamp device 100 at the time of banking of motorcycle 200 can be more smoothly suppressed.

  In the present embodiment, the length between the left end of the left light shielding surface 130L and the right end of the right light shielding surface 130R in the left-right direction W is larger than the spread of the light in the left-right direction W at the position of the rotation axis Ax. . Therefore, the change in the irradiation range of the headlamp device 100 can be suppressed over a sufficiently wide range in the left-right direction W.

(8) Modified Example (a) First Modified Example FIG. 22 is a schematic diagram illustrating a configuration of a headlamp device 100 according to a first modified example. The headlamp device 100 of FIG. 22 has the same configuration as the headlamp device 100 of FIG. 3 except for the following points.

  As shown in FIG. 22, the headlamp device 100 according to the first modification includes two light sources 110, a rotating shaft 120, two light shielding members 130, a rotation driving unit 140, a control unit 150, two reflecting members 160, and Two lenses 170 are provided. The two light sources 110 are arranged, for example, in the left-right direction W (FIG. 2). The two light shielding members 130, the two reflecting members 160, and the two lenses 170 correspond to the two light sources 110, respectively. On the other hand, the rotation shaft 120, the rotation drive unit 140, and the control unit 150 are commonly used for the two light sources 110.

  According to said structure, each irradiation range of the light radiate | emitted from the two light sources 110 is controlled by the common rotating shaft 120, the rotation drive part 140, and the control part 150. FIG. Thereby, the change of two irradiation ranges at the time of banking of a vehicle body can be suppressed while suppressing an increase in size of the headlamp device 100.

(B) Second Modification In the above embodiment, each left ridge line 134L is arranged to extend with a constant gradient to the left end of the light shielding member 130, and each right ridge line 134R has a constant gradient to the right end of the light shielding member 130. Although it arrange | positions so that it may extend, it is not limited to this. When the light shielding member 130 is sufficiently large in the left-right direction, non-light shielding surfaces that are not used for light shielding are generated at the left end portion and the right end portion of the light shielding member 130. On the non-light-shielding surface, each left ridge line 134L and each right ridge line 134R may be arranged in an arbitrary direction.

  FIG. 23 is a diagram for explaining the shape of the light shielding member 130 in the second modification. FIG. 23A shows a front view of the light shielding member 130, and FIG. 23B shows a rear view of the light shielding member 130. As shown in FIG. 23A, in the light shielding member 130 in the second modification, a left non-light shielding surface 139L that is not used for light shielding is provided on the left side of the left light shielding surface 130L. Each left ridge line 134L is arranged on the left non-light-shielding surface 139L so as to extend in parallel to the rotation axis Ax.

  Similarly, as shown in FIG. 23B, in the light shielding member 130 in the second modification, a right non-light shielding surface 139R that is not used for light shielding is provided on the right side of the right light shielding surface 130R. Each right ridge line 134R is arranged on the right non-light-shielding surface 139R so as to extend parallel to the rotation axis Ax.

(9) Comparative Example In order to facilitate understanding of the effect of the light shielding member 30 in the present embodiment, the light shielding member in the comparative example will be described. The present inventor first created the light shielding member of the comparative example. However, as described below, it is difficult to achieve an appropriate light distribution according to the bank angle in the light shielding member of the comparative example. all right.

  FIG. 24 is a diagram for explaining the shape of the light shielding member in the comparative example. FIG. 24A shows a left side view of the light shielding member 30, and FIG. 24B shows a front view of the light shielding member 30. As shown in FIGS. 24A and 24B, the light shielding member 30 is disposed so as to be rotatable in mutually opposite rotation directions R1 and R2 around the rotation axis Ax.

  Also, as shown in FIG. 24B, the light shielding member 30 has a left light shielding surface 30L and a right light shielding surface 30R arranged in the left-right direction W. The left light-shielding surface 30L and the right light-shielding surface 30R are arranged so that a part of the light from the light source 110 (FIG. 3) can be shielded. The right light shielding surface 30R has a shape that is rotationally symmetrical to the left light shielding surface 30L with respect to a straight line that is orthogonal to the rotation axis Ax and bisects the light shielding member 30. Therefore, detailed description and illustration of the right light shielding surface 30R are omitted.

The left light shielding surface 30L includes two left light shielding portions 31L and 32L and a left plane 33L. The left light shielding surface 30L has N left ridge lines 34L. The N left ridge lines 34L are referred to as left ridge lines 34L _{1 to} 34L _N , respectively. The left ridge lines 34L _{1 to} 34L _N extend in the left-right direction W and are arranged in this order in the rotation direction R1. The left light-shielding part 31L is a continuous curved surface (spline curved surface) including the left ridge lines 34L _{1 to} 134L _N described above. The left light shielding portion 32L and the left flat surface 133L have the same functions as the left light shielding portion 132L and the left flat surface 133L in FIG.

Left ridge 34L ₁ has a parallel linearly extending and rotating axis Ax in the lateral direction W. The left ridge line 34L _k rotates the left ridge line 34L _k-1 around the rotation axis Ax by a fifth angle in the rotation direction R1, and the angle of the left ridge line 34L _k with respect to the rotation axis Ax is the left ridge line 34L _{k− with} respect to the rotation axis Ax. It is obtained by bringing the left end of the left ridge line 34L _k-1 closer to the rotation axis Ax so that the sixth angle is larger than the _first angle. Here, k is an integer of 2 to N. In the comparative example, the fifth angle is, for example, 10 degrees, and the sixth angle is, for example, 2 degrees.

According to the arrangement of the left ridge line _{34L k-1,} in a side view, as shown by a dotted line in FIG. 24 (a), an extension of the left ridge line _{34L k-1} intersects the rotation axis Ax. In left side view, an angle between the extended line and the left edge line _{34L k-1} of the extension line of the left ridge line 34L _k and theta _L. For each of the two adjacent left ridge lines 34L _k and 34L _k−1 , the angle θ _L is equal to each other. That is, the left ridge lines 34L _{1 to} 34L _N are arranged at equal angular intervals in the left side view.

  FIG. 25 is a diagram showing a change in contour when the light shielding member 30 is rotated in the rotation direction R2. FIG. 25A shows the light shielding member 30 when the light shielding member 30 is rotated by a predetermined angle from the state where the rotation angle of the light shielding member 30 is 0 degree. Moreover, FIG.25 (b) shows the light-shielding member 30 when it further rotates a predetermined angle from the state of Fig.25 (a). 25A and 25B show the light shielding member 30 in the rear view, and the right parts in FIGS. 25A and 25B show the light shielding member 30 in the left side view.

As shown by the thick dotted lines in FIGS. 25A and 25B, the contour (hereinafter referred to as the left contour) 31Lc of the light shielding member 30 in the rear view includes a plurality of left ridge lines 34L _k and the left ridge lines 34L _k. This is formed by the left light shielding portion 31L. Thus, the rear view, the contour of the shielding member 30 is not formed by a single left ridge 34L _k. Further, the contour of the light shielding member 30 is not formed by the left light shielding portion 31L between the two adjacent left ridge lines 34L _k and 34L _k−1 .

  As shown in FIGS. 25A and 25B, the left contour 31Lc in the comparative example does not have a linear shape with respect to the rotation axis Ax, and has a curved shape that is difficult to be associated with the bank angle of the motorcycle 200. Have. Therefore, even if the light shielding member 30 is rotated in accordance with the bank angle of the motorcycle 200, it is difficult to realize a light distribution suitable for the bank angle using the left contour 31Lc.

On the other hand, as described above, the outline (for example, the left ridge lines 134L _{2 to} 134L _N ) of the light shielding member 130 in the present embodiment has a linear shape in the rear view. The straight line has an inclination with respect to the rotation axis Ax associated with the bank angle of the motorcycle 200. Therefore, by rotating the light blocking member 130 to a predetermined rotation position corresponding to the bank angle of the motorcycle 200, it is possible to realize a light distribution suitable for the bank angle using the left ridge lines 134L _{2 to} 134L _N. become.

(10) Other Embodiments (a) In the above embodiment, the left light shielding surface 130L and the right light shielding surface 130R of the light shielding member 130 are related to a straight line that is orthogonal to the rotation axis Ax and bisects the light shielding member 130. Although they have rotationally symmetric shapes, the present invention is not limited to this. The left light shielding surface 130L and the right light shielding surface 130R may have other arbitrary shapes capable of independently changing the left and right light distribution according to the bank angle of the saddle riding type vehicle.

(B) In the above embodiment, the left ridge lines 134L _{2 to} 134L _N are preferably determined using the left virtual planes 138L _{1 to} 138L _N , but the present invention is not limited to this. The left ridge lines 134L _{2 to} 134L _N may be determined using other methods. Similarly, the right edge line 134R ₂ ~134R _M is preferably determined by using a right virtual plane 138R ₁ ~138R _M, the present invention is not limited thereto. The left ridge lines 134R _{2 to} 134R _M may be determined using other methods.

(C) In the above embodiment, the left light-shielding portion 131L is preferably a spline curved surface including the left ridge lines 134L _{1 to} 134L _N , but the present invention is not limited to this. The left light shielding portion 131L may be an arbitrary surface including the left ridge lines 134L _{1 to} 134L _N. Similarly, it is preferable right shielding portion 131R is spline surface including the right ridge line 134R ₁ ~134R _M, the present invention is not limited thereto. Right shading portions 131R may be any plane including the right ridge line 134R ₁ ~134R _M.

In the form of (d) above embodiment, it is preferable that the left edge line 134L ₁ and the right ridge line 134R ₁ consecutive to each other, the present invention is not limited thereto. The left ridge line 134L ₁ and the right ridge line 134R ₁ may not be continuous.

(E) In the above embodiment, the left light-shielding portion 132L is preferably a partial cylindrical surface including 134L _{N + 1 to} 134L _{N + p} , but the present invention is not limited to this. The left light-shielding portion 132L may be an arbitrary surface including 134L _{N + 1 to} 134L _{N + p} . Similarly, the right light-shielding portion 132R is preferably a partial cylindrical surface including 134R _{M + 1 to} 134R _{M + q} , but the present invention is not limited to this. The right light-shielding portion 132R may be any surface including the right ridge lines 134R _{M + 1 to} 134R _{M + q} .

  (F) In the above embodiment, the light shielding member 130 preferably includes the left light shielding portion 132L, but the present invention is not limited to this. The light shielding member 130 may not include the left light shielding portion 132L. Similarly, although the light shielding member 130 preferably includes the right light shielding portion 132R, the present invention is not limited to this. The light shielding member 130 may not include the right light shielding portion 132R.

In the form of (g) above embodiment, in left side view, a left plane 133L is preferably perpendicular to a straight line passing through the rotational axis Ax and the left ridge line 134L _1, the present invention is not limited thereto. Left plane 133L may intersect at any angle to the straight line passing through the rotational axis Ax and the left ridge line 134L _1. Similarly, in the right side view, right plane 133R is preferably orthogonal to the line connecting the rotational axis Ax and the right ridge line 134R _1, the present invention is not limited thereto. Right plane 133R may intersect at any angle to the straight line passing through the rotational axis Ax and the right ridge line 134R _1.

  (H) In the above embodiment, the left light shielding surface 130L preferably has the left flat surface 133L, but the present invention is not limited to this. The left light-shielding surface 130L may not have the left flat surface 133L. Similarly, the right light-shielding surface 130R preferably has the right flat surface 133R, but the present invention is not limited to this. The right light shielding surface 130R may not have the right plane 133R.

  (I) In the above embodiment, the length between the left end of the left light shielding surface 130L and the right end of the right light shielding surface 130R in the left-right direction W is larger than the spread of the light in the left-right direction W at the position of the rotation axis Ax. However, the present invention is not limited to this. The length between the left end of the left light shielding surface 130L and the right end of the right light shielding surface 130R in the left-right direction W may be smaller than the spread of the light in the left-right direction W at the position of the rotation axis Ax.

  (J) In the above embodiment, the headlamp device 100 preferably includes the reflecting member 160 and the lens 170, but the present invention is not limited to this. The headlamp device 100 may not include one or both of the reflecting member 160 and the lens 170.

  (K) In the above embodiment, the rotation axis Ax is preferably arranged at the first position or the second position, but the present invention is not limited to this. In the headlamp device 100, the rotation axis Ax may be arranged at another position different from the first position and the second position.

  (L) The above embodiment is an example in which the present invention is applied to a motorcycle. However, the present invention is not limited to this, and other saddle-type vehicles such as a motorcycle or an ATV (All Terrain Vehicle) are used. The present invention may be applied.

(11) Correspondence between each component of claim and each part of embodiment The following describes an example of a correspondence between each component of the claim and each component of the embodiment. It is not limited to examples.

  In the above embodiment, the motorcycle 200 is an example of a saddle-ride type vehicle, the headlamp device 100 is an example of a headlamp, the light source 110 is an example of a light source, and the rotation axis Ax is an example of a rotation axis. is there. The light shielding member 130 is an example of a light shielding member, the rotation drive unit 140 is an example of a rotation drive unit, the rotation directions R1 and R2 are examples of first and second rotation directions, respectively, and the control unit 150 is a control unit. It is an example.

  The left light shielding surface 130L is an example of a left light shielding surface, the right light shielding surface 130R is an example of a right light shielding surface, the left ridge line 134L is an example of a left ridge line, and the left cross sections 135L and 136L are first and second sections, respectively. It is an example of the left cross section, and the right ridge line 134R is an example of the right ridge line. The right cross sections 135R and 136R are examples of first and second right cross sections, the left virtual plane 138L is an example of the left virtual plane, and the left light shielding portions 131L and 132L are first and second left light shielding portions, respectively. It is an example.

  The right virtual plane 138R is an example of the right virtual plane, the right light shielding portions 131R and 132R are examples of the first and second right light shielding portions, the left plane 133L is an example of the left plane, and the right plane 133R is It is an example of a right plane. The reflecting member 160 is an example of a reflecting member, the lens 170 is an example of a lens, the vertical wall surface SC is an example of a vertical wall surface, the boundary line left part LB is an example of the left part of the boundary line, and the right part of the boundary line RB is an example of the right part of the boundary line, and the vehicle body frame 210 is an example of the vehicle body.

  As each constituent element in the claims, various other constituent elements having configurations or functions described in the claims can be used.

  The present invention can be effectively used for a headlamp device and a saddle-ride type vehicle including the headlamp device.

30, 130 Light shielding member 30L, 130L Left light shielding surface 30R, 130R Right light shielding surface 31L, 32L, 131L, 132L Left light shielding portion 33L, 133L Left plane 31Lc Left contour 34L, 134L Left ridge line 100 Headlamp device 110 Light source 120 Rotating shaft 131R , 132R Right shading part 133R Right plane 134R Right ridge line 135L, 136L Left section 135R, 136R Right section 137L Left virtual cylinder 137R Right virtual cylinder 138L Left virtual plane 138R Right virtual plane 139L Left non-shielding surface 139R Right non-shielding surface 140 Rotation drive Part 141 Actuator 142 Rotation amount measuring instrument 150 Control part 160 Reflecting member 161 Curved part 162 Plane part 170 Lens 200 Motorcycle 210 Body frame 211 Main frame 212 Rear frame 2 3 Head pipe 220 Front fork device 221 Steering shaft 222 Left fork pipe 223 Right fork pipe 224 Handle member 224L Left handle 224R Right handle 224s Operation part 225 Under bracket 226 Upper bracket 227 Front wheel 230 Engine 231 Intake pipe 232 Exhaust pipe 233 Muffler 234 Fuel Tank 240 Seat 242 Left side cover 243 Right side cover 244 Rear cover 250 Rear arm 250s Support shaft 251 Rear wheel 251s Rear wheel driven sprocket 252 Chain 261, 263 Left direction indicator 262, 264 Right direction indicator 270 Controller 280 Detector Ax Rotation Axis F1, F2 Focal point H Vertical direction L Front-rear direction LB Left border line R1, R2 Rotation direction RB Boundary lines right part SC vertical wall W left and right direction

Claims (15)

A headlamp device for a saddle-ride type vehicle,
A light source;
A light-shielding member that is positioned in front of the light source and is rotatable around a rotation axis extending in a vehicle left-right direction;
A rotation drive unit that rotates the light shielding member in first and second rotation directions opposite to each other;
A control unit that controls the rotation driving unit so that the light shielding member rotates in the first or second rotation direction based on a bank angle of the saddle riding type vehicle;
The light-shielding member has a left light-shielding surface and a right light-shielding surface arranged in the vehicle left-right direction, and the left light-shielding surface and the right light-shielding surface are arranged so as to shield a part of light from the light source,
The left light-shielding surface has first to Nth left ridge lines (N is an integer of 2 or more) in this order, extending in the left-right direction of the vehicle and arranged in the first rotation direction.
A first left cross-section that is located within the range of the left light-shielding surface and orthogonal to the rotation axis; A second left cross section orthogonal to the light shielding member is defined,
The distance between the first left ridge line and the rotation axis in the first left cross section is equal to the distance between the first left ridge line and the rotation axis in the second left cross section;
The distance between the i-th left ridge line (i is an integer of 2 to N) in the first left cross section and the rotation axis is the i-th left ridge line and the rotation axis in the second left cross-section. Less than the distance between
In the first left cross section, a distance between the i-th left ridge line and the rotation axis is smaller than a distance between the (i-1) left ridge line and the rotation axis,
In the first left section, an angle formed between a straight line connecting the i-th left ridge line to the rotation axis and a straight line connecting the (i-1) left ridge line to the rotation axis is the second cross-section. Smaller than an angle formed by a straight line connecting the i-th left ridge line to the rotation axis and a straight line connecting the (i-1) left ridge line to the rotation axis in the left cross section;
The right light-shielding surface has first to Mth right ridge lines (M is an integer of 2 or more) in this order, extending in the vehicle left-right direction and arranged in the second rotation direction.
A first right cross-section located within the right light-shielding surface and orthogonal to the rotation axis; and a left-hand side of the first right cross-section within the right light-shielding surface and the rotation shaft An orthogonal second right cross section is defined in the light shielding member;
The distance between the first right ridge line and the rotation axis in the first right section is equal to the distance between the first right ridge line and the rotation axis in the second right section;
The distance between the j-th right ridge line (j is an integer of 2 to M) in the first right section and the rotation axis is the j-th right ridge line and the rotation axis in the second right section. Less than the distance between
In the first right cross section, a distance between the j-th right ridge line and the rotation axis is smaller than a distance between the (j−1) -th right ridge line and the rotation axis,
In the first right cross section, an angle formed by a straight line connecting the j-th right ridge line to the rotation axis and a straight line connecting the (j−1) -th right ridge line to the rotation axis is the second angle. A headlamp device having a right cross section smaller than an angle formed by a straight line connecting the j-th right ridge line to the rotation axis and a straight line connecting the (j-1) th right ridge line to the rotation axis. First to Nth left virtual planes arranged in the first rotation direction around the rotation axis are defined,
The first left virtual plane is in contact with the first left ridge line of the left light shielding surface,
The i-th left virtual plane rotates the (i−1) -th left virtual plane about the rotation axis by a first angle in the first rotation direction and the i-th left virtual plane with respect to the rotation axis. The left end of the (i-1) th left virtual plane is made closer to the rotation axis so that the angle of the second is larger than the angle of the (i-1) th left virtual plane with respect to the rotation axis. Obtained by
An intersection line between the i-th left virtual plane and the (i-1) -th left virtual plane is determined as the i-th left ridge line,
First to Mth right virtual planes arranged in the second rotation direction around the rotation axis are defined,
The first right virtual plane is in contact with the first right ridge line of the right light shielding surface,
The j-th right virtual plane rotates the (j−1) -th right virtual plane around the rotation axis by a third angle in the second rotation direction and the j-th right virtual plane with respect to the rotation axis. The right end of the (j-1) th right virtual plane with respect to the rotation axis so that the angle is larger by a fourth angle than the angle of the (j-1) th right virtual plane with respect to the rotation axis. Obtained by approaching,
The headlamp device according to claim 1, wherein an intersection line between the j-th right virtual plane and the (j−1) -th right virtual plane is determined as the j-th right ridge line. A continuous curved surface including the first to Nth left ridge lines is formed as a first left light shielding portion of the left light shielding surface;
The headlamp device according to claim 1, wherein a continuous curved surface including the first to Mth right ridge lines is formed as a first right light shielding portion of the right light shielding surface. When the light shielding member is viewed from the rear, a second contour is sequentially formed as the rotation angle of the light shielding member in the second rotation direction increases from a state in which the first left ridge line forms a contour. An inclination angle formed by the Nth left ridge line with respect to the rotation axis is increased,
When the light shielding member is viewed from the rear, a second contour is sequentially formed as the rotation angle of the light shielding member in the first rotation direction increases from a state in which the first right ridge line forms a contour. The headlamp device according to any one of claims 1 to 3, wherein an inclination angle formed by the Mth right ridge line with respect to the rotation axis is increased. The headlamp device according to any one of claims 1 to 4, wherein the first left ridge line and the first right ridge line are continuous with each other. The left light-shielding surface is arranged in order from the first left ridge line in the second rotation direction and parallel to the first left ridge line (N + 1) to (N + p) left ridge lines (p is 1 or more) An integer),
In the first and second left cross sections, the distance between each of the (N + 1) th to (N + p) left ridge lines and the rotation axis is between the first left ridge line and the rotation axis. Equal to the distance of
The right light-shielding surface is arranged in order from the first right ridge line in the first rotation direction and parallel to the first right ridge line (M + 1) to (M + q) right ridge lines (q is 1 or more) An integer),
In the first and second right cross sections, the distance between each of the (M + 1) to (M + q) right ridge lines and the rotation axis is between the first right ridge line and the rotation axis. The headlamp device according to claim 5, which is equal to the distance of A partial cylindrical surface including the first left ridge line and the (N + 1) to (N + p) left ridge lines is formed as a second left light shielding portion of the left light shielding surface;
The headlamp device according to claim 6, wherein a partial cylindrical surface including the first right ridge line and the (M + 1) to (M + q) right ridge lines is formed as a second right light shielding portion of the right light shielding surface. . The left light-shielding surface further has a left plane located on the opposite side of the first left ridge line with respect to the rotation axis and parallel to the rotation axis,
The shortest distance between the left plane and the rotation axis is smaller than the shortest distance between the first left ridge line and the rotation axis,
The right light-shielding surface further has a right plane located on the opposite side of the first right ridge line with respect to the rotation axis and parallel to the rotation axis,
The shortest distance between the right plane and the rotation axis is smaller than the shortest distance between the first right ridge line and the rotation axis,
The left plane and the right plane are continuous with each other,
The second to Nth left ridge lines are arranged in a region from the first left ridge line to the left plane in the first rotation direction,
The headlamp according to any one of claims 5 to 7, wherein the second to Mth right ridge lines are arranged in a region from the first right ridge line to the right plane in the second rotation direction. apparatus. In the first and second left cross sections, the left plane is orthogonal to a straight line connecting the first left ridge line and the rotation axis, and in the first and second right cross sections, the right plane is the first cross section. The headlamp device according to claim 8, wherein the headlamp device is orthogonal to a straight line connecting one right ridge line and the rotation axis. The length between the left end of the left light-shielding surface and the right end of the right light-shielding surface in the vehicle left-right direction is greater than the spread of light in the vehicle left-right direction at the position of the rotation axis. The headlamp device according to one item. A reflecting member that reflects light from the light source;
A lens for collecting the light reflected by the reflecting member;
11. The headlamp device according to claim 1, wherein the light shielding member is disposed so as to shield a part of light reflected by the reflecting member between the reflecting member and the lens. . The light distribution of the headlamp device on a vertical wall surface defined at a position a predetermined distance away from the saddle-riding vehicle is a boundary line extending in the left-right direction as a boundary line indicating the boundary of the upper and lower edges of light and dark Has a left part and a right part of the border,
The boundary line left part is formed by the right ridge line, the boundary line right part is formed by the left ridge line,
The reflecting member has a focal point in front of the light source;
The rotating shaft of the light shielding member is disposed behind and below the focal point of the reflecting member,
When the saddle riding type vehicle is tilted to the left, the control unit causes the rotation driving unit to rotate the light shielding member in the first rotation direction so that the left part of the boundary line approaches horizontal, The headlamp according to claim 11, wherein when the saddle-ride type vehicle is tilted to the right, the light shielding member is rotated in the second rotation direction by the rotation driving unit so that the right part of the boundary line approaches horizontal. apparatus. The light distribution of the headlamp device on a vertical wall surface defined at a position a predetermined distance away from the saddle-riding vehicle is a boundary line extending in the left-right direction as a boundary line indicating the boundary of the upper and lower edges of light and dark Has a left part and a right part of the border,
The left edge of the boundary line is formed by the left ridge line, the right edge of the boundary line is formed by the right ridge line,
The reflecting member has a focal point in front of the light source;
The rotating shaft of the light shielding member is disposed forward and above the focal point of the reflecting member,
When the saddle riding type vehicle is tilted to the left, the control unit causes the rotation driving unit to rotate the light shielding member in the second rotation direction so that the left part of the boundary line approaches horizontal, 12. The headlamp according to claim 11, wherein when the saddle-ride type vehicle is tilted to the right, the light shielding member is rotated in the first rotation direction by the rotation driving unit so that the right part of the boundary line approaches the horizontal. apparatus. The control unit adjusts the rotation angle of the light shielding member by the rotation driving unit so that the angle from the right part of the boundary line to the left part of the boundary line increases as the bank angle of the saddle-ride type vehicle increases. The headlamp device according to claim 12 or 13, which is controlled. The car body,
A saddle-ride type vehicle comprising: the headlamp device according to any one of claims 1 to 14 provided on the vehicle body.

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