JP7279569B2 - vehicle lamp - Google Patents

Description

The present disclosure relates to vehicle lamps.

Vehicle lamps are considered to be capable of alerting a driver of a two-wheeled vehicle passing by the side of the vehicle (see, for example, Patent Document 1, etc.).

This vehicular lamp can partially illuminate the road surface in front of the outside of the vehicle to form an irradiation pattern. can be evoked.

JP-A-7-125573

However, the vehicle lamp described above only partially illuminates the road surface to form an irradiation pattern. For this reason, the driver of the two-wheeled vehicle may not be able to determine whether the irradiation pattern is formed by the vehicle that is about to pass by or by the irradiation of the surrounding streetlights or the like. Therefore, there is room for improvement in the vehicle lamp described above from the viewpoint of appropriately alerting people around the vehicle.

The present disclosure has been made in view of the above circumstances, and an object of the present disclosure is to provide a vehicle lamp that forms an irradiation pattern that can appropriately alert people around the vehicle.

A vehicle lamp according to the present disclosure includes a light source and a projection lens that projects light emitted from the light source to form an irradiation pattern. a second irradiation area outside the first irradiation area that is darker than the first irradiation area; and a third irradiation area outside the second irradiation area that is brighter than the second irradiation area; forms a first outer boundary line outside the first irradiation area and a third inner boundary line inside the third irradiation area.

According to the vehicular lamp of the present disclosure, it is possible to form an irradiation pattern capable of appropriately alerting people around the vehicle.

FIG. 3 is an explanatory diagram showing how the vehicle lamp according to the present disclosure is mounted on a vehicle to form an irradiation pattern; FIG. 2 is an explanatory diagram showing the configuration of the vehicle lamp of Example 1; FIG. 2 is an explanatory diagram for explaining setting of an irradiation pattern, in which the upper side shows the irradiation pattern formed on the road surface, and the lower side shows a graph showing how the illuminance changes in the width direction on the road surface including the irradiation pattern. show. FIG. 3 is an explanatory diagram showing an irradiation pattern projected on a screen by a vehicle lamp; FIG. 4 is an explanatory diagram showing how light passing through a projection lens travels on a cross section including the optical axis in the vehicle lamp. FIG. 2 is an explanatory diagram showing how light passing through a projection lens travels in a longitudinal section including an optical axis in a vehicle lamp, and six optical regions divided in the vertical direction. FIG. 10 is an explanatory diagram showing how the projection lens is optically set, and shows the relationship between the contour position of the irradiation pattern and a plurality of light distribution images by the light that has passed through the first optical region on the screen. FIG. 8 is an explanatory diagram similar to FIG. 7, showing the relationship between the contour position of the irradiation pattern and a plurality of light distribution images by the light that has passed through the second optical area on the screen. FIG. 8 is an explanatory diagram similar to FIG. 7, showing the relationship between the contour position of the irradiation pattern and a plurality of light distribution images by the light that has passed through the third optical region on the screen. FIG. 8 is an explanatory diagram similar to FIG. 7, showing the relationship between the contour position of the irradiation pattern and a plurality of light distribution images by the light that has passed through the fourth optical region on the screen. FIG. 8 is an explanatory diagram similar to FIG. 7, showing the relationship between the contour position of the irradiation pattern and a plurality of light distribution images by the light that has passed through the fifth optical region on the screen. FIG. 8 is an explanatory diagram similar to FIG. 7, showing the relationship between the contour position of the irradiation pattern and a plurality of light distribution images by the light that has passed through the sixth optical region on the screen. FIG. 4 is an explanatory diagram showing a usage example as an example of an irradiation pattern formed by a vehicle lamp;

A first embodiment of a vehicle lamp 10 as an example of a vehicle lamp according to the present disclosure will be described below with reference to the drawings. Note that FIG. 1 exaggerates the size of the vehicle lamp 10 relative to the vehicle 1 in order to facilitate understanding of how the vehicle lamp 10 is installed, and does not necessarily match the actual situation. not something to do. In FIG. 3, in the graph shown on the lower side, the vertical axis is the illuminance, and the horizontal axis is the position in the width direction including the irradiation pattern Pi shown on the upper side and its periphery. Furthermore, in FIGS. 7 to 12, only the selected light distribution image Li is shown in order to facilitate understanding of how each irradiation area (A1, A2, A3) of the irradiation pattern Pi is formed by each light distribution image Li. , and does not necessarily match the actual situation. 7 to 12, the contour positions set as the irradiation pattern Pi (each irradiation area thereof) are shown on the screen. is also shown with an arrow indicating . Regarding this arrow, FIG. 4 is also the same.

A vehicle lamp 10 of Example 1 according to one embodiment of the vehicle lamp according to the present disclosure will be described with reference to FIGS. 1 to 13 . A vehicle lamp 10 of Embodiment 1 is used as a lamp for a vehicle 1 such as an automobile, as shown in FIG. An irradiation pattern Pi is formed. Here, the surrounding area of the vehicle 1 necessarily includes a proximity area closer to the vehicle 1 than the headlight area illuminated by the headlights provided in the vehicle 1, and partially includes the headlight area. In some cases. The vehicle lamps 10 are provided in the vehicle lamp chamber, the door mirror, the side surface of the vehicle body, and the like of the vehicle 1. In the first embodiment, the vehicle lamps 10 are arranged in the lamp chambers on both left and right sides of the front portion of the vehicle. The lamp chamber is formed by covering the open front end of the lamp housing with an outer lens. The vehicle lamp 10 is provided with the optical axis La inclined with respect to the road surface 2 . This is because the lamp chamber is provided at a position higher than the road surface 2 .

In the following description, as shown in FIG. 1, on the road surface 2 around the vehicle 1, the direction in which the vehicle 1 travels is defined as the running direction (Dr in the drawing), and the direction orthogonal to the running direction is the width direction ( Dw in the drawing). Also, as shown in FIG. 2, in the vehicle lamp 10, the direction in which the optical axis La extends, which is the direction in which light is emitted, is defined as the optical axis direction (referred to as Z in the drawing), and the optical axis direction is along the horizontal plane. The vertical direction (Y in the drawing) is defined as the vertical direction, and the horizontal direction (horizontal direction) perpendicular to the optical axis direction and the vertical direction is defined as the left-right direction (X in the drawing).

A vehicle lamp 10 is assembled with a light source unit 11 and a projection lens 12, and constitutes a direct projection type road surface projection unit. The vehicular lamp 10 is installed in the vehicle 1 in a state in which the light source unit 11 and the projection lens 12 are assembled and housed in a housing as appropriate.

The light source unit 11 has a light source 21 mounted on a substrate 22 . The light source 21 is composed of a light-emitting element such as an LED (Light Emitting Diode), and is provided such that the central axis of radiation coincides with the optical axis La. In Example 1, the light source 21 has a Lambertian distribution centered on the radiation central axis, and is amber light (a graph in which the vertical axis is the light amount and the horizontal axis is the wavelength) has the largest peak in the amber wavelength band. emits substantially amber monochromatic light). The light source 21 has a light-emitting portion (a region that emits light) that has a rectangular shape when viewed from the optical axis direction. In the light source 21, the color (wavelength band), the distribution mode, the number of colors (the number of peaks in the graph described above), etc. in the radiated light may be appropriately set, and the configuration is limited to that of the first embodiment. not.

The substrate 22 appropriately supplies power from the lighting control circuit to light the light source 21 . The substrate 22 is formed in a plate shape and has a square shape when viewed from the optical axis direction. The substrate 22 is provided with mounting holes 22a at four corners.

The substrate 22 uses aluminum in the first embodiment, and functions also as a heat sink member that releases heat generated by the mounted light source 21 to the outside. Note that the substrate 22 may be provided with a plurality of heat radiation fins as appropriate. Further, the light source unit 11 may have a configuration in which another heat dissipation member is attached to the substrate 22 . Light emitted from the light source 21 of the light source unit 11 is projected onto the road surface 2 by the projection lens 12 .

The projection lens 12 includes a lens main body portion 23 which is a rectangular convex lens when viewed from the optical axis direction, and mounting portions 24 provided on both sides. It should be noted that this quadrangular shape may be rectangular or curved on each side as long as it has four corners (including those chamfered into spherical surfaces or the like). The lens main body 23 shapes and projects the light from the light source 21 to form an irradiation pattern Pi on the projection target (the road surface 2 in the first embodiment). It is a free-form surface, that is, a surface whose curvature is smoothly changed without steps. Optical settings in the lens body 23 (projection lens 12) will be described later. The projection lens 12 has a lens axis extending in the optical axis direction. The lens axis is an axis that is the optical center of the lens main body 23 .

The mounting portions 24 are provided in pairs on both side portions in the left-right direction of the lens main body portion 23, and protrude rearward in the optical axis direction (toward the light source portion 11). Each mounting portion 24 is provided with a mounting protrusion 27 at an end portion in the vertical direction. Each mounting projection 27 has a columnar shape projecting rearward in the optical axis direction, and can be fitted into a mounting hole 22 a of the substrate 22 . By fitting the mounting protrusions 27 into the corresponding mounting holes 22a, the lens axis of the lens body 23 and the radiation central axis of the light source 21 of the light source 11 are aligned with each other. becomes the optical axis La at .

The projection lens 12 is provided with a scattering portion 28 on the end face in the left-right direction. The end surfaces in the left-right direction have both side surfaces 23 a of the lens body portion 23 and outer side surfaces 24 a of the mounting portions 24 . The scattering section 28 scatters (progresses in various directions) the light that is guided into the projection lens 12 and emitted from the side surfaces 23a and the outer side surface 24a. It is formed by applying blasting or the like.

As shown in FIG. 1 , the vehicle lamp 10 forms an irradiation pattern Pi on the left and right sides of the vehicle 1 symmetrically with respect to a plane perpendicular to the width direction of the vehicle 1 . The irradiation pattern Pi has a first irradiation area A1, a second irradiation area A2, and a third irradiation area A3 in order from the inner side (vehicle 1 or light source 21 side) in the width direction. extended. That is, the irradiation pattern Pi is formed by arranging three linear irradiation regions extending in the running direction in parallel in the width direction. In addition, the vehicle lamp 10 is formed at a distance from the vehicle 1 on which it is mounted, thereby forming a non-irradiation area An inside the irradiation pattern Pi (its first irradiation area A1) where light is not irradiated. do. The setting of this irradiation pattern Pi will be described with reference to FIG. The irradiation pattern Pi can be set by adjusting the irradiation pattern Pi (see FIG. 4) on the screen while considering the distance and angle from the vehicle lamp 10 provided on the vehicle 1 to the road surface 2. can.

The irradiation pattern Pi, as shown in FIG. 3, makes the first irradiation area A1 the brightest, the second irradiation area A2 the darkest, and the third irradiation area A3 the intermediate brightness. The brightness of the third irradiation area A3 may be substantially equal to that of the first irradiation area A1. Even if the second irradiation area A2 is the darkest one in the irradiation pattern Pi, it is formed by irradiation of light, so that it illuminates the road surface 2 in a strip extending in the running direction. For this reason, the irradiation pattern Pi is formed on the road surface 2 with no illuminance without being irradiated with light. It is shining now.

In the irradiation pattern Pi, the dimension in the width direction is the smallest in the second irradiation area A2, the largest in the first irradiation area A1, and the largest in the third irradiation area A3. The first irradiation area A1 is sized in the width direction in order to make it easier for the driver of the vehicle to see. are the dimensions of The widthwise dimension of the first irradiation area A1 together with the non-irradiation area An is the minimum size that allows a two-wheeled vehicle 3 such as a motorcycle or a bicycle to pass through the side of the vehicle 1.

As an example of the widthwise dimension of the irradiation pattern Pi, the first irradiation area A1 is 20 cm, the second irradiation area A2 is 15 cm, and the third irradiation area A3 is 40 cm. The irradiation pattern Pi has a dimension of 30 cm to 50 cm in the width direction of the non-irradiation area An, that is, between the vehicle 1 and the vehicle 1 . Therefore, in the irradiation pattern Pi, the dimension in the width direction, which is the sum of the first irradiation area A1 and the non-irradiation area An, is set to 50 cm to 80 cm.

Next, optical settings of the lens main body 23 (projection lens 12) will be described with reference to FIGS. 4 to 12. FIG. FIG. 4 shows an irradiation pattern Pi formed on a screen placed perpendicular to the optical axis La, which has a shape different from that projected onto the road surface 2 (see FIG. 1). In FIG. 4, the longitudinal direction of the irradiation pattern Pi (horizontal direction when viewed from the front) corresponds to the running direction, the lateral direction (vertical direction when viewed from the front) corresponds to the width direction, and the lower side corresponds to the width direction. corresponds to the inside of As shown in FIG. 4, the irradiation pattern Pi has a substantially rectangular outline (shape) on the screen. The irradiation pattern Pi has a first irradiation area A1 extending in the running direction on the lower side, a second irradiation area A2 extending in the running direction on the upper side, and a third irradiation area A3 on the upper side. When this irradiation pattern Pi is projected onto the road surface 2, since the optical axis La is inclined with respect to the road surface 2, as shown in FIGS. trapezoid). The lens main body 23 is optically set so as to form such an irradiation pattern Pi on the screen.

As shown in FIG. 5, the lens main body 23 converts light from the light source 21 into light passing near the optical axis La ( ray group) are diffused (to widen the interval in the traveling direction of each other), and the light (light ray group) passing through a position away from the optical axis La is made substantially parallel. That is, the lens main body 23 has a Lambertian distribution and diffuses light in the vicinity of the optical axis La where the amount of light is high, and collects the light outward from the vicinity of the optical axis La. Therefore, the lens main body 23 disperses the light from the light source 21 substantially evenly in the cross section, that is, in the left-right direction, so that the light quantity distribution is substantially equal. The lens main body 23 may collect light on both boundary lines (inside them) positioned in the left-right direction of the irradiation pattern Pi to make both boundary lines clear.

In addition, as shown in FIG. 6, the lens main body 23 is divided into six optical regions in a longitudinal section including the optical axis direction and the vertical direction, ie, a longitudinal section orthogonal to the horizontal direction. These optical regions are referred to as a first optical region S1, a second optical region S2, a third optical region S3, a fourth optical region S4, a fifth optical region S5, and a sixth optical region S6 in order from the top. Each optical region (S1 to S6) is determined by the incident angle from the light source 21 to the incident surface 25 of the lens main body 23 in the vertical direction (longitudinal section) with the optical axis La as a reference.

Specifically, the first optical region S1 is a region outside (vertical direction upper side) around the optical axis La with an incident angle of 30 degrees, and in Example 1, the incident angle is from 30 degrees to 50 degrees. area. The second optical area S2 is an area where the incident angle is from 10 degrees to 30 degrees. The third optical region S3 is a region where the incident angle is from 0 degrees to 10 degrees. The fourth optical area S4 is an area where the incident angle is from -10 degrees to 0 degrees. The fifth optical area S5 is an area where the incident angle is from -30 degrees to -10 degrees. The sixth optical region S6 is a region outside (downward in the vertical direction) centered on the optical axis La from the incident angle of -30 degrees, and in Example 1, the incident angle is from -50 degrees to -30 degrees. area. Therefore, the first optical region S1 is the upper end region, the second optical region S2 is the upper region, the third optical region S3 and the fourth optical region S4 are the central regions, and the fifth optical region S5 is the lower region. , the sixth optical region S6 is the lower end side region. Each optical region (S1 to S6) may include an angle (30 degrees, 10 degrees, −10 degrees, −30 degrees) as a boundary between any of the adjacent regions, and can be set as appropriate.

Each optical region (S1 to S6) forms an irradiation pattern Pi by projecting light from the light source 21 according to its optical setting. Here, as shown in FIGS. 7 to 12, the irradiation pattern Pi is formed by appropriately overlapping a plurality of light distribution images Li of the light source 21 on the screen. Each of the light distribution images Li is basically in a quadrangular shape by being projected by the light source 21 , but the formed position and shape change according to the optical setting in the lens main body 23 . Then, the lens main body 23 sets a corresponding portion of the irradiation pattern Pi for each optical region, and optically sets each optical region according to the corresponding portion.

Here, on the screen, the lens body 23 mainly adjusts the shape of the exit surface 26 to adjust the position where each light distribution image Li is formed, and mainly adjusts the shape of the entrance surface 25. to adjust the shape of each light distribution image Li. For this reason, the lens main body 23 mainly adjusts the curvature (surface shape) of the exit surface 26 for each location to achieve the above optical setting in the cross section and the optical setting in the longitudinal section described below. and is done. The exit surface 26 is optically set by gradually changing the curvature, and is a single smooth surface without steps.

The first optical region S1 forms a third irradiation region A3 of the irradiation pattern Pi, and also defines a third outer boundary line Bo3 outside the third irradiation region A3 (outside the irradiation pattern Pi, away from the light source 21). Form. The first optical region S1 diffuses the light (a group of light rays) among the light from the light source 21 that passes through the vicinity of the incident angle of 30 degrees, and decreases the degree of diffusion as the incident angle increases, The curvature of the exit surface 26 is set so that the light beams (light rays) passing through the vicinity of the angle of 50 degrees are substantially parallel. That is, the first optical region S1 diffuses light when the incident angle is near 30 degrees, and collects light as the incident angle approaches 50 degrees. For this reason, as shown in FIG. 7, the first optical region S1 has a size such that each light distribution image Li due to light passing through the vicinity of the incident angle of 30 degrees reaches substantially the entirety of the third irradiation region A3 in the width direction. (symbol Lia). In addition, the first optical region S1 makes each light distribution image Li by light having an incident angle of about 50 degrees correspond to a part of the third irradiation region A3 in the width direction. (symbol Lib).

As a result, the first optical region S1 projects each light distribution image Li into the third irradiation region A3, and aligns the outer edges of each light distribution image Li to form a third outer boundary line Bo3. . Here, in the first optical region S1, when there is a light distribution image Li shifted outward in the width direction from the third outer boundary line Bo3, the curvature of the exit surface 26 at the corresponding portion is adjusted. to properly align each light distribution image Li. As a result, the first optical region S1 irradiates the third irradiation region A3 while concentrating the light on the third outer boundary line Bo3, thereby adjusting the contrast between the third irradiation region A3 and its outside (outside the irradiation pattern Pi). The difference is made clear, and the third outer boundary line Bo3 is made clear.

The second optical region S2 forms a third irradiation region A3 of the irradiation pattern Pi and forms a third inner boundary line Bi3 inside the third irradiation region A3 (on the side of the second irradiation region A2). The second optical region S2 diffuses the light (a group of light rays) among the light from the light source 21 that passes through the vicinity of the incident angle of 30 degrees, and reduces the degree of diffusion as the incident angle becomes smaller. The curvature of the exit surface 26 is set so that the light (light ray group) passing through the vicinity of the angle of 10 degrees is substantially parallel. That is, the second optical region S2 diffuses light when the incident angle is near 30 degrees, and collects light as the incident angle approaches 10 degrees. For this reason, as shown in FIG. 8, the second optical region S2 has a size such that each light distribution image Li by light passing through the vicinity of the incident angle of 30 degrees reaches substantially the entirety of the third irradiation region A3 in the width direction. (symbol Lic). In addition, the second optical area S2 makes each light distribution image Li by the light that has passed through the vicinity of the incident angle of 10 degrees the size corresponding to a part of the third irradiation area A3 in the width direction. (symbol Lid) in the width direction (lower side when viewing FIG. 8 from the front).

As a result, the second optical region S2 projects each light distribution image Li into the third irradiation region A3, and aligns the inner edges of each light distribution image Li to form a third inner boundary line Bi3. . Here, in the second optical region S2, when there is a light distribution image Li shifted inward in the width direction from the third inner boundary line Bi3, the curvature of the output surface 26 at the corresponding portion is adjusted. to properly align each light distribution image Li. As a result, the second optical region S2 illuminates the third irradiation region A3 while concentrating light on the third inner boundary line Bi3 to clarify the difference in brightness between the third irradiation region A3 and the second irradiation region A2. , the third inner boundary line Bi3 is sharpened.

The third optical area S3 mainly forms the second irradiation area A2 and the third irradiation area A3 of the irradiation pattern Pi. The third optical region S3 diffuses the light (a group of light rays) among the light from the light source 21 that passes near the optical axis La at an incident angle, and the degree of diffusion decreases as the incident angle increases. , the curvature of the exit surface 26 is set. That is, the third optical region S3 greatly diffuses the light when the incident angle is near the optical axis La, and decreases the degree of diffusion as the incident angle approaches 10 degrees.

For this reason, as shown in FIG. 9, the third optical region S3 is configured to transmit each light distribution image Li by light passing near the optical axis La from the first irradiation region A1 through the second irradiation region A2 in the width direction. The size is set to cover the entire third irradiation area A3 (symbol Lie). In addition, the third optical region S3 causes each light distribution image Li formed by light passing through a position away from the optical axis La and having an incident angle smaller than 10 degrees to overlap with the first irradiation region A1 in the width direction, while being slightly overlapped with the second light distribution image Li. The size is set to cover the entire irradiation area A2 and the third irradiation area A3 (symbol Lif). Then, the third optical region S3 causes each light distribution image Li due to the light passing through the vicinity of the incident angle of 10 degrees to extend to the entire third irradiation region A3 while slightly covering the second irradiation region A2 in the width direction. (symbol Lig). As a result, the third optical region S3 irradiates a wide range from the first irradiation region A1 to the third irradiation region A3 while surely irradiating at least a part of the second irradiation region A2.

The fourth optical region S4 has a vertically inverted relationship with the third optical region S3, and mainly forms the second irradiation region A2 and the first irradiation region A1 of the irradiation pattern Pi. The fourth optical region S4 diffuses the light (a group of light rays) among the light from the light source 21 that passes near the optical axis La at an incident angle, and the degree of diffusion decreases as the incident angle decreases. , the curvature of the exit surface 26 is set. That is, the fourth optical region S4 greatly diffuses the light when the incident angle is near the optical axis La, and decreases the degree of diffusion as the incident angle approaches -10 degrees.

For this reason, as shown in FIG. 10, the fourth optical region S4 is configured to transmit each light distribution image Li by light passing near the optical axis La from the third irradiation region A3 through the second irradiation region A2 in the width direction. The size is set to cover the entire first irradiation area A1 (symbol Lih). In addition, the fourth optical area S4 causes each light distribution image Li by light that has passed through a position away from the optical axis La with an incident angle larger than -10 degrees to overlap with the third irradiation area A3 in the width direction. The size is set to cover the entirety of the second irradiation area A2 and the first irradiation area A1 (symbol Lik). Then, the fourth optical region S4 spreads each light distribution image Li by the light having an incident angle of about 10 degrees in the width direction over the entire first irradiation region A1 while slightly covering the second irradiation region A2. (symbol Lim). As a result, the fourth optical region S4 irradiates a wide range from the third irradiation region A3 to the third irradiation region A3, while surely irradiating at least a part of the second irradiation region A2.

The fifth optical region S5 has a vertically reversed relationship with the second optical region S2, forms the first irradiation region A1 of the irradiation pattern Pi, and is outside the first irradiation region A1 (the second irradiation region A2 side) forms a first outer boundary line Bo1. The fifth optical region S5 diffuses the light (a group of light rays) among the light from the light source 21 that passes through the vicinity of the incident angle of -30 degrees, and decreases the degree of diffusion as the incident angle increases. The curvature of the exit surface 26 is set so that the light (light ray group) passing through the vicinity of the incident angle of -10 degrees is substantially parallel. That is, the fifth optical region S5 diffuses light when the incident angle is around -30 degrees, and collects the light as the incident angle approaches -10 degrees. For this reason, as shown in FIG. 11, the fifth optical region S5 has a large light distribution image Li formed by light passing through the vicinity of the incident angle of −30 degrees in the width direction to substantially the entire first irradiation region A1. (symbol Lin). In addition, the fifth optical region S5 makes each light distribution image Li by the light that has passed through the vicinity of the incident angle of -10 degrees the first irradiation region while making the size corresponding to a part of the first irradiation region A1 in the width direction. Move to the outside of A1 in the width direction (upper side when viewing FIG. 11 from the front) (symbol Lip).

As a result, the fifth optical region S5 projects each light distribution image Li into the first irradiation region A1, and aligns the outer edges of each light distribution image Li to form the first outer boundary line Bo1. . Here, in the fifth optical region S5, when there is a light distribution image Li shifted outward in the width direction from the first outer boundary line Bo1, the curvature of the exit surface 26 at the corresponding portion is adjusted. , the respective light distribution images Li are properly aligned. As a result, the fifth optical region S5 irradiates the first irradiation region A1 while concentrating light on the first outer boundary line Bo1 to clarify the difference in brightness between the first irradiation region A1 and the second irradiation region A2. , the first outer boundary Bo1 is sharpened.

The sixth optical region S6 has a vertically inverted relationship with the first optical region S1, forms the first irradiation region A1 of the irradiation pattern Pi, and is located inside the first irradiation region A1 (non-irradiation region An side) forming a first inner boundary line Bi1. The sixth optical region S6 diffuses the light (a group of light rays) among the light from the light source 21 that passes through the vicinity of the incident angle of -30 degrees, and decreases the degree of diffusion as the incident angle becomes smaller. The curvature of the output surface 26 is set so that the light (light ray group) passing through the vicinity of the incident angle of -50 degrees is substantially parallel. That is, the sixth optical region S6 diffuses light when the incident angle is around -30 degrees, and collects the light as the incident angle approaches -50 degrees. For this reason, as shown in FIG. 12, the sixth optical region S6 has a large light distribution image Li formed by light passing through the vicinity of the incident angle of −30 degrees in the width direction to substantially the entire first irradiation region A1. (symbol Liq). In addition, the sixth optical region S6 makes each light distribution image Li by the light that has passed through the vicinity of the incident angle of -50 degrees the first irradiation region while making the size corresponding to a part of the first irradiation region A1 in the width direction. Move to the inner side of A1 in the width direction (lower side when viewing FIG. 12 from the front) (symbol Lir).

As a result, the sixth optical region S6 projects each light distribution image Li into the first irradiation region A1, and aligns the inner edges of each light distribution image Li to form a first inner boundary line Bi1. . Here, in the sixth optical region S6, when there is a light distribution image Li shifted inward in the width direction from the first inner boundary line Bi1, the curvature of the exit surface 26 at the corresponding portion is adjusted. , the respective light distribution images Li are properly aligned. As a result, the sixth optical region S6 irradiates the first irradiation region A1 while concentrating the light on the first inner boundary line Bi1 to form the first irradiation region A1 and its inside (non-irradiation region inside the irradiation pattern Pi). An) is made clear, and the first inner boundary line Bi1 is made clear.

In the lens main body 23, the surface shape of the incident surface 25 is adjusted so that the distortion in each light distribution image Li on the screen is reduced. Here, the incident surface 25 has the shape in the above-described transverse section and the shape in the above-described longitudinal section set individually.

As shown in FIG. 5, the entrance surface 25 is a concave surface in cross section, that is, a curved surface protruding toward the side opposite to the light source 21 (the front side in the optical axis direction). This is because the distortion in each light distribution image Li increases when the incident surface 25 is flat compared to when it is concave, and the distortion in each light distribution image Li increases when the incident surface 25 is convex.

Also, as shown in FIG. 6, the incident surface 25 is a convex surface in a longitudinal section, that is, a curved surface protruding toward the light source 21 side (rear side in the optical axis direction). This is because when the incident surface 25 is flat, the distortion in each light distribution image Li is greater than when it is convex, and when the incident surface 25 is concave, the distortion in each light distribution image Li is further increased.

In this way, the incident surface 25 is a toroidal surface (toroidal lens) having different radii of curvature in the horizontal section, that is, in the horizontal direction, and in the longitudinal section, that is, in the vertical direction. If the incident surface 25 has a convex surface in the vertical section and a concave surface in the horizontal section, the respective curvature radii (curvatures) may be appropriately set. Also, the incident surface 25 may be a free-form surface based on the above toroidal surface. The incident surface 25 having such a shape can suppress the distortion of each light distribution image Li, and the irradiation pattern Pi can be formed using each light distribution image Li. Thereby, the lens main body 23 can form the irradiation pattern Pi into a more desired shape. Compared to using each light distribution image Li with a large distortion, using each light distribution image Li with a small distortion forms a line by arranging the outer edges of each light distribution image Li as described above. This is because it becomes easy to appropriately arrange the light distribution image Li up to the corner of the set boundary line.

The vehicle lamp 10 is assembled as follows with reference to FIG. First, the light source 21 is mounted on the substrate 22 and the light source section 11 is assembled while being positioned with respect to the substrate 22 . After that, the mounting protrusions 27 of both mounting portions 24 of the projection lens 12 are fitted into the corresponding mounting holes 22a of the substrate 22 of the light source portion 11 to fix both mounting portions 24 to the substrate 22 . As a result, the radiation center axis of the light source 21 of the light source unit 11 and the lens axis of the lens body 23 of the projection lens 12 are aligned with each other at a predetermined distance, and they form the optical axis La of the vehicle lamp 10 . In this state, the light source unit 11 and the projection lens 12 are attached, and the vehicle lamp 10 is assembled.

As shown in FIG. 1, the vehicle lamp 10 is installed in the lamp chamber with the optical axis La directed to the side of the vehicle 1 and inclined with respect to the road surface 2 around the vehicle 1 . The vehicle lamp 10 supplies electric power from the lighting control circuit to the light source 21 from the substrate 22 to appropriately turn on and off the light source 21 . The light from the light source 21 is projected while being controlled by the projection lens 12, so that the strip-shaped first irradiation area A1, the second irradiation area A2, and the third irradiation area A3 extending in the running direction are arranged. An irradiation pattern Pi is formed on the road surface 2 . The irradiation pattern Pi has a trapezoidal shape that widens with increasing distance from the vehicle 1, and a non-irradiation area An is formed between the vehicle 1 and the first irradiation area A1. The irradiation pattern Pi can partially illuminate the road surface 2 on the left and right sides in the vicinity of the front end of the vehicle 1 . This irradiation pattern Pi is formed in conjunction with the turn lamps as an example in the first embodiment, and can inform the surroundings that the vehicle 1 is to turn right or left.

The irradiation pattern Pi has the first inner boundary line Bi1 and the first outer boundary line Bo1 of the first irradiation area A1 and the third inner boundary line of the third irradiation area A3 by the above setting of each optical area (S1 to S6). A line Bi3 and a third outer boundary line Bo3 are formed. For this reason, since the irradiation pattern Pi has a clear boundary with the surroundings and a boundary between each irradiation area (A1, A2, A3), the three strip-shaped irradiation areas (A1, A2 , A3). As shown in FIGS. 1 and 3, the irradiation pattern Pi of the first embodiment is such that the distance to the road surface 2 increases toward the outer side in the width direction due to the inclination of the optical axis La with respect to the road surface 2. The amount of light in the vicinity of the third outer boundary line Bo3 of the 3 irradiation area A3 is gradually decreasing, and the third outer boundary line Bo3 is difficult to understand. For this reason, the irradiation pattern Pi of Example 1 is blurred in the vicinity of the third outer boundary line Bo3, and can show a state in which the light travels away from the vehicle 1 .

Further, in the irradiation pattern Pi, the second irradiation area A2 is only irradiated with part of the light that has passed through the third optical area S3 and the fourth optical area S4. On the other hand, the first irradiation area A1 is irradiated with substantially all of the light that has passed through the first optical area S1 and the second optical area S2, and is irradiated with part of the light that has passed through the third optical area S3. . Similarly, the third irradiation area A3 is irradiated with substantially all of the light that has passed through the fifth optical area S5 and the sixth optical area S6, and is also irradiated with part of the light that has passed through the fourth optical area S4. Therefore, in the irradiation pattern Pi, the second irradiation area A2 is the darkest. Since the distance to the road surface 2 is increased due to the inclination of the optical axis La with respect to the road surface 2, the third irradiation area A3 is darker than the first irradiation area A1.

Next, operation of the vehicle lamp 10 will be described with reference to FIGS. 1 to 13. FIG. Note that FIG. 13 omits the driver of the two-wheeled vehicle 3 for easy understanding. The vehicle lamp 10 is interlocked with the turn lamps, and when either the left or right turn lamp is turned on, the light source 21 provided on the turned-on side is turned on, and the irradiation pattern Pi is projected onto the road surface 2. to form. For example, FIG. 13 shows a scene in which a vehicle 1 traveling straight on the road is about to turn left. In the vehicle 1, the vehicle lamp 10 provided on the left front forms an irradiation pattern Pi on the road surface 2 by blinking the left turn lamp. Then, the driver of the two-wheeled vehicle 3 traveling behind the vehicle 1 can visually recognize the irradiation pattern Pi formed on the road surface 2 even if the turn lamp of the vehicle 1 cannot be visually recognized, overlooked, or is difficult to see. , and it can be grasped that the vehicle 1 is to turn left.

In the vehicle 1, the left and right vehicle lamps 10 are linked to the turn lamps. Therefore, when both turn lamps are turned on as hazard lamps, the left and right vehicle lamps 10 simultaneously emit the irradiation pattern Pi. It is formed on the road surface 2 (see FIG. 1). Therefore, the vehicular lamp 10 makes a person in the vicinity of the vehicle 1 more surely recognize that it is turned on as a hazard lamp, as compared with the case where only the left and right turn lamps are blinking. be able to.

Furthermore, the vehicular lamp 10 clears the first inner boundary line Bi1, the first outer boundary line Bo1, the third inner boundary line Bi3, and the third outer boundary line Bo3 by concentrating the light, and the boundary with the surroundings. Also, an irradiation pattern Pi with clear boundaries between the irradiation areas (A1, A2, A3) can be formed. For this reason, the vehicular lamp 10 makes it possible to recognize the shape of the irradiation pattern Pi without increasing the light intensity of the light source 21, and the formed irradiation pattern Pi can be used to inform people around the driver of some intention ( In Example 1, it is possible to convey right and left turns, etc.).

Here, the conventional vehicular lamp described in the prior art document simply projects an irradiation pattern onto the road surface around the vehicle, and does not form an outline (outer boundary line) of the irradiation pattern. For this reason, the conventional vehicular lamp forms a vaguely shining region as an irradiation pattern, which may make it difficult to recognize the shape of the irradiation pattern. Such an irradiation pattern makes it difficult to distinguish whether it is formed by the light from the vehicle or by the light from other sources such as streetlights in the vicinity. There is a possibility that it may become difficult to convey some intention of the driver to people around.

For this reason, conventional vehicle lamps form an irradiation pattern by projecting a plurality of point lights or a plurality of linear lights, and this irradiation pattern is formed by the light from the vehicle. It is conceivable that it is possible to determine the However, such an irradiation pattern has a pitch-black region where no light is irradiated between the dots or lines of light, so the ratio of the light region to the whole is reduced. Therefore, this irradiation pattern has less brightness as a whole, and there is room for improvement from the viewpoint of calling attention. In particular, in this irradiation pattern, when the pitch-dark region extends in the width direction, the pitch-dark region appears crushed when viewed from a distance, but when approached, the pitch-dark region can be recognized. This makes it feel as if the shape (lighting mode) changes according to the change in .

On the other hand, in the vehicle lamp 10 of the first embodiment, the strip-shaped first irradiation area A1, the second irradiation area A2, and the third irradiation area A3 extending in the running direction are arranged to form the irradiation pattern Pi. Therefore, the vehicular lamp 10 forms a stripe-shaped irradiation pattern Pi extending in the running direction, which is different from the irradiation of light from a street lamp or the like, and is formed by the light from the vehicle. can be easily determined. Here, it is generally known that the pattern provided on the road surface 2 is easily recognized by the driver of the vehicle if it extends in the direction of travel. As a result, the vehicle lamp 10 can present an easily recognizable irradiation pattern Pi, making it easier to distinguish from the one formed by the light from the vehicle. (In Example 1, turning left or right, etc.) can be appropriately conveyed.

In particular, the vehicular lamp 10 of the first embodiment collects light at each boundary line (Bi1, Bo1, Bi3, Bo3) in the irradiation pattern Pi to form a boundary with the surroundings and each irradiation area (A1, A2). , A3) are sharpened. Therefore, the vehicular lamp 10 can make it clear that the formed irradiation pattern Pi has three irradiation areas, and can be recognized as three strips extending in the running direction. Therefore, the vehicular lamp 10 can recognize the irradiation pattern Pi (its shape) without increasing the light amount of the light source 21, as compared with the conventional vehicular lamp. Further, in the vehicle lamp 10, each boundary line is formed by optical setting of the lens body 23 to clarify the shape of the irradiation pattern Pi. , can have a simple configuration. Thus, the vehicular lamp 10 can make the intended shape of the irradiation pattern Pi be recognized by people around the vehicle. I can tell you.

The vehicle lamp 10 of the first embodiment has three irradiation areas (A1, A2, A3) formed by irradiating the road surface 2 with the irradiation pattern Pi. Therefore, the vehicular lamp 10 can illuminate the irradiation pattern Pi over the entire area although there is a difference in illuminance. The change can be prevented, and the attention of the surrounding people can be appropriately called.

Furthermore, in the vehicle lamp 10 of Example 1, the light source 21 emits the above-described amber light, so the influence of chromatic aberration in the projection lens 12 can be greatly suppressed. Therefore, the vehicular lamp 10 can form an irradiation pattern Pi in which the boundary with the surroundings and the boundary of each irradiation area (A1, A2, A3) are clearer.

In addition, the vehicle lamp 10 of the first embodiment divides the lens body 23 into six optical regions (S1 to S6) in the vertical direction, and each optical region among the three irradiation regions (A1, A2, A3) Each irradiation area is formed by individually setting the corresponding portions and setting the curvature (surface shape) of each output surface 26 . Therefore, the vehicle lamp 10 can form the irradiation pattern Pi in three irradiation areas with a simple configuration including the light source unit 11 and the projection lens 12 without using a new light source. can be made easier to recognize.

In the vehicle lamp 10 of the first embodiment, the dimension in the width direction of the first irradiation area A1 of the irradiation pattern Pi is substantially equal to the white line formed on the road surface 2. As shown in FIG. From the viewpoint of making it easier for the driver of the vehicle to recognize the white line, the dimension in the width direction is set and the white line extends in the running direction. Therefore, the vehicular lamp 10 can make the first irradiation area A1 of the irradiation pattern Pi easily recognizable, and can appropriately draw attention.

In particular, the vehicular lamp 10 of the first embodiment has a dimension in the width direction that is the sum of the first irradiation area A1 and the non-irradiation area An, so that a two-wheeled vehicle 3 such as a motorcycle or a bicycle can pass through the side of the vehicle 1. It has a minimum size. Therefore, the vehicular lamp 10 can appropriately call attention to the two-wheeled vehicle 3 (its driver) trying to pass by. The reason for this is as follows. For example, as shown in FIG. 13, a vehicle 1 is traveling on a road surface 2 provided with a sidewalk 4 having a sidewalk boundary block 4a, and a two-wheeled vehicle 3 is traveling between the sidewalk 4 (sidewalk boundary block 4a) and the sidewalk 4 (sidewalk boundary block 4a). It is assumed that there is enough space between the In this situation, when the vehicle lamp 10 forms the irradiation pattern Pi on the road surface 2 on the sidewalk 4 side, part of the irradiation pattern Pi is formed on the sidewalk 4 . However, the vehicular lamp 10 can form at least the first irradiation area A1 on the road surface 2 by setting the dimensions in the width direction as described above when the two-wheeled vehicle 3 can pass through. In the vehicle lamp 10, when the vehicle 1 is closer to the sidewalk 4 than in the state shown in FIG. It is difficult for the two-wheeled vehicle 3 to pass between the road and the sidewalk 4. For this reason, the vehicular lamp 10 presents the first irradiation area A1, which is at least the brightest and whose dimension in the width direction is substantially equal to the white line, to the two-wheeled vehicle 3 (its driver) trying to pass through. It can be done and can be appropriately alerted. Therefore, the vehicular lamp 10 can be used even in a situation where it is difficult for people in the vicinity to visually recognize the turn lamps, such as when the vehicle 1 is about to change lanes in a traffic jam. ) can be appropriately alerted.

The vehicle lamp 10 of Example 1 has scattering portions 28 on both side surfaces 23 a of the lens main body 23 and outer side surfaces 24 a of the mounting portions 24 , which are end surfaces in the left-right direction of the projection lens 12 . Therefore, in the vehicle lamp 10, even when the light from the light source 21 guided into the projection lens 12 is emitted from both side surfaces 23a of the lens main body 23 and the outer side surfaces 24a of the mounting portions 24, , the light can be scattered by the scattering section 28 . As a result, the vehicle lamp 10 can prevent the light emitted from the side surfaces 23a and the outer side surfaces 24a from becoming leakage light that illuminates the irradiation pattern Pi and unintended portions around it. Therefore, the vehicle lamp 10 can suppress blurring of the irradiation pattern Pi and form the irradiation pattern Pi appropriately.

The vehicle lamp 10 of Example 1 can obtain the following effects.

The vehicle lamp 10 includes a light source 21 and a projection lens 12 that projects light emitted from the light source 21 to form an irradiation pattern Pi. The vehicular lamp 10 forms an irradiation pattern Pi that has a first irradiation area A1, a second irradiation area A2, and a third irradiation area A3 extending in the running direction, and the second irradiation area A2 is the darkest. . In the vehicle lamp 10, the projection lens 12 forms a first outer boundary line Bo1 outside the first irradiation area A1 and a third inner boundary line Bi3 inside the third irradiation area A3. . Therefore, the vehicular lamp 10 can make the first outer boundary line Bo1 and the third inner boundary line Bi3 clear, so that the contrast with the second irradiation area A2 located in the middle of the irradiation pattern Pi can be clearly defined. This makes it easy to recognize the shapes of the three irradiation areas (A1, A2, A3) extending in the running direction. As a result, the vehicle lamp 10 can easily determine that the irradiation pattern Pi is formed by the light from the vehicle 1, and appropriately alert people around the vehicle 1. be able to.

Further, the vehicle lamp 10 has a non-irradiation area An adjacent to the inner side of the first irradiation area A1 of the irradiation pattern Pi. For this reason, the vehicle lamp 10 has a non-irradiation area An between the irradiation pattern Pi and the vehicle 1, so that it can be recognized that it is not decorative light that illuminates the bottom of the vehicle 1. In addition, visibility of the irradiation pattern Pi can be improved by making the irradiation pattern Pi stand out on the dark road surface 2 .

Further, in the vehicle lamp 10, the projection lens 12 forms a first inner boundary line Bi1 inside the first irradiation area A1. Therefore, the vehicular lamp 10 can make the first inner boundary line Bi1, that is, the inner edge of the irradiation pattern Pi clearer, making it easier to recognize the shape of the irradiation pattern Pi.

The vehicle lamp 10 makes the first irradiation area A1 brighter than the third irradiation area A3 in the irradiation pattern Pi. Therefore, the vehicular lamp 10 makes the first irradiation area A1 closest to the vehicle 1 the brightest, thereby making it easier to recognize the shape of the irradiation pattern Pi.

In the vehicular lamp 10, in the irradiation pattern Pi, the dimensions in the width direction are the smallest in the second irradiation area A2 and the largest in the third irradiation area A3. Therefore, the vehicular lamp 10 can be brightened as a whole because the second irradiation area A2, which is the darkest, is small, and the third irradiation area A3, which is the farthest from the vehicle 1, is the largest, making it possible to give a feeling of spaciousness. . As a result, the vehicular lamp 10 can enhance the design of the irradiation pattern Pi and facilitate recognition of the shape of the irradiation pattern Pi. In particular, in the vehicle lamp 10 of the first embodiment, the dimension in the width direction of the first irradiation area A1 is substantially equal to the white line formed on the road surface 2, so that the first irradiation area A1 can be easily recognized. It is possible to call attention appropriately.

In the vehicle lamp 10, the projection lens 12 forms the first outer boundary line Bo1 using a plurality of light distribution images Li projected in the lower area (fifth optical area S5), and the upper area (second optical area S5). A third inner boundary line Bi3 is formed using the plurality of light distribution images Li projected in S2). Therefore, in the vehicle lamp 10, the projection lens 12 is divided into two areas in the vertical direction, and the first outer boundary line Bo1 and the third inner boundary line Bi3 are separately formed. With a simple configuration consisting of the light source unit 11 and the projection lens 12, the irradiation pattern Pi can be easily recognized.

In the vehicle lamp 10, the projection lens 12 forms a first inner boundary line Bi1 inside the first irradiation area A1 using a plurality of light distribution images Li projected in the lower end area (sixth optical area S6). , a plurality of light distribution images Li projected in the upper end region (first optical region S1) are used to form a third outer boundary line Bo3 outside the third irradiation region A3. Therefore, in the vehicle lamp 10, the projection lens 12 is further divided into two areas in the vertical direction, and the first inner boundary line Bi1 and the third outer boundary line Bo3 are separately formed. , and the projection lens 12, the irradiation pattern Pi can be easily recognized.

The vehicle lamp 10 forms the second irradiation area A2 using a plurality of light distribution images Li projected by the projection lens 12 in the central area (third optical area S3, fourth optical area S4). For this reason, the vehicle lamp 10 forms the second irradiation area A2 in areas obtained by further dividing the projection lens 12 in the vertical direction. With such a simple configuration, the irradiation pattern Pi can be easily recognized.

Therefore, the vehicle lamp 10 of Example 1, which is the vehicle lamp according to the present disclosure, can form an irradiation pattern Pi capable of appropriately calling the attention of surrounding people.

Although the vehicle lamp of the present disclosure has been described above based on the first embodiment, the specific configuration is not limited to the first embodiment, and is outside the gist of the invention according to each claim. Design changes, additions, etc. are permitted unless

In the first embodiment, the irradiation pattern Pi has a trapezoidal shape on the road surface 2 that widens as the distance from the vehicle 1 increases. However, if the irradiation pattern Pi is provided with the second irradiation area A2 between the first irradiation area A1 and the third irradiation area A3 extending in the running direction, and the second irradiation area A2 is the darkest, the shape is It is not limited to the trapezoidal shape and may be set as appropriate, and is not limited to the configuration of the first embodiment.

Moreover, in Example 1, the whole area of the second irradiation area A2 of the irradiation pattern Pi is set to a single brightness. However, if the second irradiation area A2 is darker than the first irradiation area A1 and the third irradiation area A3, it may be composed of a plurality of areas with different brightness. It is not limited to the configuration of Example 1. For example, in the second irradiation area A2, locations with different brightness extending in the running direction may be arranged in parallel in the width direction. In this case, the second irradiation area A2 has a portion adjacent to the first irradiation area A1 (its first outer boundary line Bo1) and a third irradiation area A3 (its third inner boundary line Bi3). As long as it is made darker than the third irradiation area A3, there may be a spot in the intermediate position that is approximately as bright as the first irradiation area A1 or the third irradiation area A3. That is, the irradiation pattern Pi includes five or more bright strips extending in the running direction in addition to the first irradiation region A1 and the third irradiation region A3, and the bright strips extending in the running direction in the second irradiation region A2. It is good also as what has a part. Even in this case, the second irradiation area A2 has areas that are darker than both irradiation areas (A1, A3), so that the second irradiation area A2 is darker than both irradiation areas as a whole.

Furthermore, in Example 1, the projection lens 12 forms each boundary line (Bi1, Bo1, Bi3, Bo3). However, the projection lens 12 is not limited to the configuration of the first embodiment as long as it forms at least the first outer boundary line Bo1 and the third inner boundary line Bi3.

Furthermore, in the projection lens 12 of the first embodiment, the scattering portions 28 are provided on both side surfaces 23 a of the lens main body portion 23 and on the outer side surfaces 24 a of the mounting portions 24 . However, if the scattering portion 28 is a portion other than the entrance surface 25 and the exit surface 26 of the projection lens 12 and the light from the light source 21 guided into the projection lens 12 becomes leaked light, Other than 23a and both outer side surfaces 24a may be provided as appropriate, and the configuration is not limited to that of the first embodiment.

In Example 1, the upper region, the upper region, the central region, the lower region, and the lower region of the projection lens 12 are set as described above (each optical region (S1 to S6)). However, each area in the projection lens 12 is arranged such that, in the vertical direction, the upper area is located above the optical axis, the upper area is located above the upper area, and the lower area is located below the optical axis. , the lower end side area at a position below the lower area, and the central area at a position including the optical axis, and the configuration is not limited to that of the first embodiment.

10 Vehicle lamp 12 Projection lens 21 Light source 25 Entrance surface 26 Output surface A1 First irradiation area A2 Second irradiation area A3 Third irradiation area An Non-irradiation area Bi1 First inner boundary line Bi3 Third inner boundary line Bo1 First outer boundary line Boundary line Li Light distribution image Pi Irradiation pattern S1 Upper end area (first optical area) S2 Upper area (second optical area) S3 and S4 are central areas (third optical area and fourth optical area) S5 Lower area ( Fifth optical area) S6 Lower end side area (sixth optical area)

Claims (8)

a light source;
a projection lens that projects the light emitted from the light source to form an irradiation pattern;
The irradiation pattern includes a first irradiation area extending in the running direction, a second irradiation area outside the first irradiation area darker than the first irradiation area, and the second irradiation area outside the second irradiation area. and a third illumination area that is brighter than
The vehicle lamp, wherein the projection lens forms a first outer boundary line outside the first irradiation area and a third inner boundary line inside the third irradiation area. 2. The vehicle lamp according to claim 1, wherein the irradiation pattern has a non-irradiation area adjacent to the inner side of the first irradiation area. 3. The vehicle lamp according to claim 1, wherein the projection lens forms a first inner boundary line inside the first irradiation area. 4. The vehicle lamp according to any one of claims 1 to 3, wherein in the irradiation pattern, the first irradiation area is brighter than the third irradiation area. 5. The irradiation pattern according to any one of claims 1 to 4, wherein the dimension in the width direction orthogonal to the running direction is the smallest in the second irradiation area and the largest in the third irradiation area. 1. The vehicle lamp according to 1. The projection lens forms the first outer boundary line using a plurality of light distribution images of the light source projected in a lower area that does not include the optical axis in the vertical direction, and projects in an upper area that does not include the optical axis. 6. The vehicle lamp according to any one of claims 1 to 5, wherein the third inner boundary line is formed using a plurality of the light distribution images. The projection lens forms a first inner boundary line inside the first irradiation area using a plurality of the light distribution images projected in a lower end area below the lower area in the vertical direction, 7. The vehicle according to claim 6, wherein a plurality of said light distribution images projected in an upper end region above said upper region are used to form a third outer boundary line outside said third irradiation region. lighting equipment. 8. The projection lens according to claim 6 or 7, wherein the projection lens forms the second irradiation area using a plurality of the light distribution images projected in a central area including the optical axis in the vertical direction. Vehicle lighting.

Images