JP7804638B2 - Vehicle lighting fixtures - Google Patents

Description

This disclosure relates to a vehicle lighting fixture.

Patent document 1 discloses a vehicle lighting fixture having a high beam light source and a low beam light source as a headlamp for a motorcycle.

International Application Publication WO2019/039051

When turning right or left on a motorcycle, the driver shifts their center of gravity and leans the vehicle in the direction of the turn, increasing the bank angle as they go around the corner. There is room for improvement in the configuration to form an appropriate light distribution pattern when the vehicle is banking.

The object of this disclosure is to provide a vehicle lamp that forms a lateral light distribution pattern that can reduce glare or power consumption while improving forward visibility when the vehicle is leaning.

A vehicle lamp according to a first aspect of the present disclosure includes:
A vehicle lamp provided on a vehicle that travels around a corner by tilting the vehicle body in the direction of the turn,
a side light source that forms a side light distribution pattern on a side of the high beam light distribution pattern when the vehicle body is banked;
a control unit that controls the side light source;
It is equipped with
the control unit changes the light intensity of the side light source in accordance with a bank angle of the vehicle body,
When an object outside the vehicle is detected, the control unit changes the light intensity of the side light source so as to form a dark portion in an area of the side light distribution pattern corresponding to the object.

The vehicle lamp according to the first aspect of the present disclosure changes the light intensity of the side light sources according to the bank angle of the vehicle body, thereby improving forward visibility when the vehicle body is banked while reducing the power consumption of the side light sources. Furthermore, by changing the light intensity of the side light sources so as to form dark areas in the side light distribution pattern in areas corresponding to objects outside the vehicle, the glare on the objects can be reduced.

A vehicle lamp according to a second aspect of the present disclosure includes:
A vehicle lamp provided on a vehicle that travels around a corner by tilting the vehicle body in the direction of the turn,
a side light source that forms a side light distribution pattern on a side of the high beam light distribution pattern when the vehicle body is banked;
and a control unit that changes the light intensity of the side light source in accordance with the bank angle of the vehicle body and the speed of the vehicle.

The vehicle lamp according to the second aspect of the present disclosure changes the light intensity of the side light sources according to the bank angle of the vehicle body and the vehicle speed, thereby reducing the power consumption of the side light sources. Furthermore, because the light intensity of the side light sources is changed according to the estimated speed of the vehicle traveling around a corner with a predetermined curve, it is possible to illuminate a desired range of light according to the curve of the corner being traveled. This improves forward visibility when the vehicle is banking.

The vehicle lamp disclosed herein can provide a vehicle lamp that forms a lateral light distribution pattern that can reduce glare or power consumption while improving forward visibility when the vehicle is leaning.

FIG. 1 is a perspective view of a motorcycle equipped with a headlamp according to this embodiment. FIG. 2 is a diagram showing a light distribution pattern formed by the headlamp of FIG. FIG. 3 is a block diagram of the headlamp according to the first embodiment. FIG. 4 is a diagram showing the relationship between the current value supplied to each light source of the right cornering lamp and the bank angle. FIG. 5 is a diagram showing a side light distribution pattern formed when the vehicle is traveling with the body tilted to the right. FIG. 6 is a diagram showing a side light distribution pattern formed when the vehicle is traveling with the body tilted to the right. FIG. 7 is a diagram showing a side light distribution pattern formed when the vehicle is traveling with the body tilted to the right. FIG. 8 is a diagram showing the relationship between the current value supplied to each light source of the right cornering lamp and the bank angle when an oncoming vehicle is detected. FIG. 9 is a diagram showing a side light distribution pattern formed when an oncoming vehicle is detected. FIG. 10 is a diagram showing a side light distribution pattern formed when an oncoming vehicle is detected. FIG. 11 is a diagram showing a side light distribution pattern formed when an oncoming vehicle is detected. FIG. 12 is a cross-sectional view showing the configuration of a high beam lamp unit provided in a headlamp. FIG. 13 is a perspective view showing the configuration of a light source unit provided in the high beam lamp unit of FIG. FIG. 14 is a diagram showing a light distribution pattern formed by the headlamp of FIG. FIG. 15 is a diagram showing the value of the current supplied to the light source of the high beam lamp unit when the motorcycle body is traveling straight. FIG. 16 is a diagram showing a high beam light distribution pattern formed when the vehicle is traveling with the body tilted to the right. FIG. 17 is a diagram showing the value of the current supplied to the light source of the high beam lamp unit when the high beam light distribution pattern of FIG. 16 is formed. FIG. 18 is a diagram showing a high beam light distribution pattern formed when the vehicle is traveling with the body tilted to the right. FIG. 19 is a diagram showing the value of the current supplied to the light source of the high beam lamp unit when the high beam light distribution pattern of FIG. 18 is formed. FIG. 20 is a diagram showing a high beam light distribution pattern formed when the vehicle is traveling with the body tilted to the right. FIG. 21 is a diagram showing the value of the current supplied to the light source of the high beam lamp unit when the high beam light distribution pattern of FIG. 20 is formed. FIG. 22 is a diagram showing a high beam light distribution pattern formed when an oncoming vehicle is detected. FIG. 23 is a block diagram of a headlamp according to the second embodiment. FIG. 24 is a diagram showing the flow of cornering lamp control by the lamp control unit. FIG. 25 is a diagram showing the relationship between the current value supplied to the light source and the bank angle of the vehicle body. FIG. 26 is a diagram showing a side light distribution pattern formed when the vehicle is traveling with the body tilted to the right. FIG. 27 is a diagram showing a side light distribution pattern formed when the vehicle is traveling with the body tilted to the right. FIG. 28 is a diagram showing a side light distribution pattern formed when the vehicle is traveling with the body tilted to the right. FIG. 29 is a diagram showing the relationship between the current value supplied to the light source and the bank angle of the vehicle body. FIG. 30 is a diagram showing a side light distribution pattern formed when the vehicle is traveling with the body tilted to the right. FIG. 31 is a diagram showing a side light distribution pattern formed when the vehicle is traveling with the body tilted to the right. FIG. 32 is a diagram showing a side light distribution pattern formed when the vehicle is traveling with the body tilted to the right.

Embodiments of the present disclosure will be described with reference to the drawings. Note that in this embodiment, the terms "left-right direction," "front-rear direction," and "up-down direction" refer to relative directions set for the motorcycle 100 shown in Figure 1 for the sake of convenience.

Figure 1 shows a motorcycle 100 equipped with headlamps 1, 10 according to this embodiment. The motorcycle 100 is a vehicle that can travel around corners (curves) on a road by leaning the body in the direction of the turn.

The headlamp 1, 10 is mounted on the front of the motorcycle 100. The headlamp 1, 10 is a lamp capable of emitting light ahead of the vehicle. The headlamp 1, 10 includes a low beam lamp unit 2, a high beam lamp unit 3, and a cornering lamp 4. The headlamp 1, 10 is an example of a vehicle lamp.

Light emitted from the low beam lamp unit 2 is configured to be emitted in front of the vehicle and form a low beam light distribution pattern.Light emitted from the high beam lamp unit 3 is configured to be emitted in front of the vehicle and form a high beam light distribution pattern.

The cornering lamps 4 are configured to project light forward to form a side light distribution pattern to the side of the high beam light distribution pattern when the vehicle is banking. In this example, the cornering lamps 4 include a right cornering lamp 4R located on the right side of the vehicle body and a left cornering lamp 4L located on the left side of the vehicle body.

As used herein, the expression "the body of the motorcycle 100 banks" means that the body of the motorcycle 100 leans to the left or right relative to a vertical line. As used herein, the term "bank angle" means the lean angle when the body of the motorcycle 100 leans to the left or right relative to a vertical line.

The right-side cornering lamp 4R includes light sources 40R1, 40R2, and 40R3. Each of the light sources 40R1, 40R2, and 40R3 can be independently controlled to be turned on and off. The left-side cornering lamp 4L includes light sources 40L1, 40L2, and 40L3. Each of the light sources 40L1, 40L2, and 40L3 can be independently controlled to be turned on and off. Light sources 40R1, 40R2, and 40R3 and light sources 40L1, 40L2, and 40L3 are examples of side light sources. Each of light sources 40R1, 40R2, and 40R3 and light sources 40L1, 40L2, and 40L3 is an example of a light-emitting element. In the following description, light sources 40R1, 40R2, and 40R3 and light sources 40L1, 40L2, and 40L3 may be simply referred to as light sources 40.

Figure 2 shows the light distribution pattern P formed by the headlamp 1, 10. This light distribution pattern P is formed on a virtual vertical screen placed at a predetermined position in front of the lamp, for example, 25 m in front of the lamp, when the body of the motorcycle 100 is perpendicular to the road surface. In Figure 2, H-H indicates the horizontal direction (horizontal line H), and V-V indicates the vertical direction (vertical line V).

The light distribution pattern P is formed by combining the high beam light distribution pattern PH, the low beam light distribution pattern PL, and the side light distribution pattern PC. In this example, the side light distribution pattern PC is formed by the right side light distribution pattern PCR and the left side light distribution pattern PCL. Specifically, the right side light distribution pattern PCR is formed by the right side cornering lamp 4R so that it extends at least further to the right of the vehicle body than the high beam light distribution pattern PH. The left side light distribution pattern PCL is formed by the left side cornering lamp 4L so that it extends at least further to the left of the vehicle body than the high beam light distribution pattern PH.

The light sources 40R1, 40R2, and 40R3 of the right-side cornering lamp 4R form partial patterns PCR1, PCR2, and PCR3, respectively. The partial patterns PCR1, PCR2, and PCR3 are formed adjacent to each other in the vertical direction. The right-side light distribution pattern PCR is formed by combining the partial patterns PCR1, PCR2, and PCR3. The light sources 40L1, 40L2, and 40L3 of the left-side cornering lamp 4L form partial patterns PCL1, PCL2, and PCL3, respectively. The partial patterns PCL1, PCL2, and PCL3 are formed adjacent to each other in the vertical direction. The left-side light distribution pattern PCL is formed by combining the partial patterns PCL1, PCL2, and PCL3.

(First embodiment)
As shown in Fig. 3, the headlamp 1 according to the first embodiment includes a lamp control unit 5. The low beam lamp unit 2, the high beam lamp unit 3, and the cornering lamps 4 are connected to the lamp control unit 5. The lamp control unit 5 controls the low beam lamp unit 2, the high beam lamp unit 3, and the cornering lamps 4. The lamp control unit 5 is an example of a control unit.

The lamp control unit 5 is electrically connected to a bank angle sensor 6 and an external sensor 7. The bank angle sensor 6 detects the tilt state of the motorcycle 100. Specifically, the bank angle sensor 6 is a sensor capable of detecting the bank angle of the body of the motorcycle 100. The bank angle sensor 6 is composed of, for example, a gyro sensor.

The external sensor 7 acquires environmental information outside the vehicle, including information on objects. Specifically, the external sensor 7 is a sensor capable of acquiring information on the outside of the vehicle, including the surrounding environment of the motorcycle 100 (for example, obstacles, other vehicles (vehicles in front, oncoming vehicles), pedestrians, road shapes, traffic signs, etc.). The external sensor 7 is, for example, a LiDAR (Light Detection and Ranging or Laser Imaging Detection and Ranging) sensor.
The system is composed of at least one of a camera, radar, etc.

Information about the bank angle of the vehicle body is transmitted from the bank angle sensor 6 to the lamp control unit 5. Information about the environment outside the vehicle is transmitted from the external sensor 7 to the lamp control unit 5. The lamp control unit 5 controls the cornering lamps 4 based on the bank angle information of the vehicle body and the environment information outside the vehicle. Specifically, the lamp control unit 5 adjusts the side light distribution pattern PC by changing the light intensity of the light source 40 of the cornering lamps 4 according to the bank angle of the vehicle body and the object present in front of the vehicle.

The method for adjusting the side light distribution pattern PC by the lamp control unit 5 is explained below with reference to Figures 4 to 11. Note that the following describes the control of the right cornering lamp 4R when traveling around a right-facing corner. The control of the left cornering lamp 4L when traveling around a left-facing corner is the same as the control of the right cornering lamp 4R except that the left and right directions are reversed, so an explanation of this will be omitted.

For example, when the body of the motorcycle 100 is tilted to the right, such as when traveling around a right-facing corner, the lamp control unit 5 adjusts the lateral light distribution pattern so that the light intensity of the light sources 40R1, 40R2, and 40R3 of the right-side cornering lamp 4R decreases in order, starting with the light source that forms the lower area within the lateral light distribution pattern, as the bank angle of the body of the motorcycle 100 increases.

Specifically, as illustrated in Figure 4, when the lamp control unit 5 determines that the bank angle A of the vehicle body is equal to or greater than the first threshold Ath1, it supplies current to the light sources 40R1, 40R2, and 40R3 of the right cornering lamp 4R. The first threshold Ath1 can be set appropriately based on, for example, the minimum bank angle at which the body of the motorcycle 100 is assumed to be tilted in order to travel around a corner on a road.

As a result, light sources 40R1, 40R2, and 40R3 are turned on, and as illustrated in Figure 5, the right-hand light distribution pattern PCR becomes a light distribution pattern that is a combination of partial pattern PCR1 formed by light source 40R1, partial pattern PCR2 formed by light source 40R2, and partial pattern PCR3 formed by light source 40R3.

If the vehicle body is tilted further to the right and the bank angle A of the vehicle body is determined to be equal to or greater than a second threshold value Ath2, which is greater than the first threshold value Ath1, the lamp control unit 5 reduces the amount of current supplied to the light source 40R1 that forms the partial pattern PCR1 that constitutes the lower region of the right light distribution pattern PCR. The second threshold value Ath2 can be set appropriately, for example, based on a bank angle at which the lower region of the right light distribution pattern PCR formed on the road surface close to the vehicle body is not expected to contribute to long-distance visibility.

As a result, the amount of light from light source 40R1 decreases, and as illustrated in Figure 6, the right-hand light distribution pattern PCR becomes a light distribution pattern that is a combination of partial pattern PCR2, partial pattern PCR3, and partial pattern PCR1, which has an illuminance lower than that of partial pattern PCR2 and partial pattern PCR3.

If the vehicle body is further tilted to the right and the bank angle A of the vehicle body is determined to be equal to or greater than a third threshold value Ath3, which is greater than the second threshold value Ath2, the lamp control unit 5 reduces the amount of current supplied to light source 40R2, which forms partial pattern PCR2 located above partial pattern PCR1. The lamp control unit 5 also reduces the amount of current supplied to light source 40R1 to be less than the amount of current supplied to light source 40R2. The third threshold value Ath3 is set appropriately depending on, for example, the number and size of the partial patterns formed by the light sources 40 of the cornering lamp 4.

As a result, the light intensity of light source 40R1 and the light intensity of light source 40R2 decrease, and as illustrated in Figure 7, the right-hand light distribution pattern PCR becomes a light distribution pattern that is a combination of partial pattern PCR3, partial pattern PCR2 which has an illuminance lower than that of partial pattern PCR3, and partial pattern PCR1 which has an illuminance lower than that of partial pattern PCR2.

When adjusting the lateral light distribution pattern according to the bank angle of the vehicle body as described above, if an object is detected in front of the motorcycle 100, the lamp control unit 5 changes the light intensity of the light sources 40R1, 40R2, and 40R3 of the right cornering lamp 4R so that a dark area is formed in the area of the lateral light distribution pattern PC corresponding to the object.

As used herein, the term "dark area" includes not only non-illuminated areas formed by not emitting light from the light source 40, but also low-illuminance areas formed by emitting dimmed light from the light source 40. "Low illuminance" refers to illuminance that does not cause glare to the driver of an oncoming vehicle, which is an example of an object.

Specifically, the lamp control unit 5 detects the status of the oncoming vehicle CV, including the presence or absence of the oncoming vehicle CV and its location, based on environmental information outside the vehicle acquired from the external sensor 7. The location of the oncoming vehicle CV includes the distance from the motorcycle 100 to the oncoming vehicle and the coordinates of the oncoming vehicle's position on a virtual vertical screen. The lamp control unit 5 also detects the status of the host vehicle, including the inclination state of the host vehicle, based on vehicle body bank angle information acquired from the bank angle sensor 6. The lamp control unit 5 identifies the area ahead of the vehicle where the oncoming vehicle CV is located based on the status of the oncoming vehicle CV and the status of the host vehicle. The lamp control unit 5 dims or turns off light sources 40R1, 40R2, and 40R3 that emit light to the identified area.

Figure 8 illustrates the relationship between the current value supplied to light sources 40R1, 40R2, and 40R3 and the bank angle of the vehicle body when an oncoming vehicle CV is present in front of motorcycle 100. Figures 9 to 11 illustrate the side light distribution pattern formed when an oncoming vehicle CV is present in front of motorcycle 100.

As illustrated in Figures 8 and 9, when the body of the motorcycle 100 is tilted to the right and it is determined that an oncoming vehicle CV is present in front of the vehicle, the lamp control unit 5 controls the cornering lamp 4 so that the light source 40 that forms a partial pattern in the right light distribution pattern PCR that includes an area corresponding to the oncoming vehicle CV is not turned on.

That is, as illustrated from the first threshold Ath1 to the second threshold Ath2 in Figure 8, the lamp control unit 5 supplies current only to the light source 40R1 of the right cornering lamp 4R, and does not supply current to the light sources 40R2 and 40R3 that form the partial patterns PCR2 and PCR3 that include the area corresponding to the oncoming vehicle CV. As a result, only the light source 40R1 is lit, and the right light distribution pattern PCR is formed only by the partial pattern PCR1 formed by the light source 40R1, as illustrated in Figure 9.

When the vehicle body is tilted further to the right, as illustrated from the second threshold Ath2 to the third threshold Ath3 in Figure 8, the lamp control unit 5 supplies current to light source 40R2, which forms partial pattern PCR2, which no longer includes the area corresponding to the oncoming vehicle CV. Meanwhile, the amount of current supplied to light source 40R1, which forms partial pattern PCR1, which constitutes the lower area of the right light distribution pattern PCR, is reduced. This causes light source 40R2 to light up, reducing the amount of light emitted by light source 40R1. As illustrated in Figure 10, the right light distribution pattern PCR is a light distribution pattern that combines partial pattern PCR2 and partial pattern PCR1, which has an illuminance lower than that of partial pattern PCR2.

When the vehicle body is tilted further to the right, as illustrated by the third threshold Ath3 or above in Figure 8, the lamp control unit 5 supplies current to light source 40R3, which forms partial pattern PCR3, which no longer includes the area corresponding to the oncoming vehicle CV. Meanwhile, the amount of current supplied to light source 40R2, which forms partial pattern PCR2 located above partial pattern PCR1, is reduced. Furthermore, the amount of current supplied to light source 40R1 is reduced more than the amount of current supplied to light source 40R2.

As a result, light source R3 is turned on, and the light intensity of light source 40R1 and the light intensity of light source 40R2 are reduced. As illustrated in Figure 11, the right light distribution pattern PCR is a light distribution pattern that combines partial pattern PCR3, partial pattern PCR2, which has an illuminance lower than that of partial pattern PCR3, and partial pattern PCR1, which has an illuminance lower than that of partial pattern PCR2.

With the above-described configuration, the lamp control unit 5 changes the light intensity of the light sources 40R1, 40R2, and 40R3 of the right cornering lamp 4R in accordance with the bank angle of the motorcycle 100. As a result, the total current supplied to the light sources 40R1, 40R2, and 40R3 changes depending on the bank angle of the motorcycle 100. For example, as illustrated by the two-dot chain lines in Figures 4 and 8, the total current supplied to the light sources 40R1, 40R2, and 40R3 decreases as the bank angle of the motorcycle 100 increases. Therefore, power consumption of the right cornering lamp 4R can be reduced compared to a configuration in which the total current supplied to the light sources 40R1, 40R2, and 40R3 does not change depending on the bank angle of the motorcycle 100. Meanwhile, forward visibility can be improved when the motorcycle 100 is banked by changing the light intensity of the light sources 40R1, 40R2, and 40R3 in accordance with the bank angle of the motorcycle 100 without reducing the light intensity of the light sources that form the partial pattern that contributes to forward visibility.

In addition, the lamp control unit 5 changes the light intensity of the light sources 40R1, 40R2, and 40R3 of the right cornering lamp 4R so as to form a dark area in the area corresponding to the oncoming vehicle CV in the right light distribution pattern PCR, thereby reducing glare for the driver of the oncoming vehicle CV.

For example, the lamp control unit 5 turns off the light source 40 that forms a partial pattern including an area corresponding to the oncoming vehicle CV among the multiple light sources 40R1, 40R2, and 40R3 of the right cornering lamp 4R. This allows a dark area to be formed in the area corresponding to the oncoming vehicle CV. The lamp control unit 5 may also reduce the light intensity of the light source so that the partial pattern including the oncoming vehicle CV is formed using dimmed light that does not cause glare to the oncoming vehicle CV.

Furthermore, the lamp control unit 5 reduces the light intensity from the light sources 40 that form the lower region of the right light distribution pattern PCR as the bank angle of the vehicle body increases. As the bank angle of the vehicle body increases, the light from the right cornering lamp 4R is irradiated onto the road surface closer to the vehicle body, and contributes less to long-distance visibility. In other words, as the bank angle of the vehicle body increases, the partial patterns that form the lower region of the right light distribution pattern PCR contribute less to long-distance visibility. Therefore, by reducing the light intensity from the light sources that form the lower region of the right light distribution pattern PCR as a whole, it is possible to reduce the power consumption of the right cornering lamp 4R while maintaining long-distance visibility.

Furthermore, as illustrated in Figures 4 and 8, the lamp control unit 5 reduces the light intensity of light sources 40R1, 40R2, and 40R3 so that the light emitted by each of light sources 40R1, 40R2, and 40R3 decreases as the bank angle of the vehicle body increases. By dimming each of light sources 40R1, 40R2, and 40R3 in accordance with the bank angle of the vehicle body in this way, it is possible to prevent the driver of the vehicle from feeling uncomfortable. Note that each of light sources 40R1, 40R2, and 40R3 may be dimmed in stages, as illustrated in Figures 4 and 8, or continuously.

In this embodiment, as illustrated in Figure 4, the lamp control unit 5 turns on all light sources 40R1, 40R2, and 40R3 when the vehicle body is tilted to the right. However, when the vehicle body is tilted to the right, only some of the light sources 40R1, 40R2, and 40R3 may be turned on.

In addition, in this embodiment, the lamp control unit 5 dims the light sources 40R1, 40R2, and 40R3 according to the bank angle of the vehicle body. However, the lamp control unit 5 may also turn off the light sources 40R1, 40R2, and 40R3 according to the bank angle of the vehicle body.

In addition, in this embodiment, when an oncoming vehicle CV is present ahead of the vehicle, the lamp control unit 5 does not turn on the light source 40 that forms a partial pattern in the side light distribution pattern PC that includes an area corresponding to the oncoming vehicle CV. However, if an oncoming vehicle CV is detected ahead of the vehicle after turning on the light source 40 of the cornering lamp 4, the lamp control unit 5 may dim or turn off the light source 40 that irradiates the area of the oncoming vehicle CV.

In addition, in this embodiment, the lamp control unit 5 adjusts the side light distribution pattern PC in accordance with the bank angle of the vehicle body and objects present in front of the vehicle. However, the lamp control unit 5 can be configured to adjust the high beam light distribution pattern PH by changing the light intensity of the high beam lamp unit 3 in accordance with the bank angle of the vehicle body.

Figure 12 is a cross-sectional view showing an example of the configuration of a high beam lamp unit. As shown in Figure 12, the high beam lamp unit 3 is disposed inside the lamp chamber 13 formed by the lamp body 11 and front cover 12 of the headlamp 1. The high beam lamp unit 3 includes a projection lens 31, a light source unit 32, and a holder 33.

The projection lens 31 is a plano-convex aspherical lens with a convex front surface and a flat rear surface. The projection lens 31 is positioned on an optical axis Ax extending in the fore-and-aft direction of the vehicle. The peripheral edge of the projection lens 31 is held at the front end of the holder 33.

As shown in FIG. 13, the light source unit 32 has multiple light sources 30a-30g and a support plate 34. The multiple light sources 30a-30g are fixed to the front surface of the support plate 34. Each of the multiple light sources 30a-30g is a light-emitting element such as a light-emitting diode (LED). The light sources 30a-30g are configured as an LED array, arranged in parallel in the left-right direction (a direction perpendicular to the optical axis Ax), with seven columns and one row, for example. Each of the light sources 30a-30g can be controlled to be turned on and off independently.

As illustrated in Figure 12, the light source unit 32 is held at the rear end of the holder 33, with the multiple light sources 30a to 30g arranged so that they face forward in the direction of the optical axis Ax. Light from the multiple light sources 30a to 30g is projected forward by the projection lens 31 to form a high beam light distribution pattern.

Figure 14 shows a light distribution pattern P10 formed by a headlamp 1 equipped with a high beam lamp unit 3 configured in this manner. The light distribution pattern P10 is a light distribution pattern formed on a virtual vertical screen placed at a predetermined position in front of the lamp, for example, 25 m in front of the lamp, when the body of the motorcycle 100 is perpendicular to the road surface. Light distribution patterns that are substantially the same as the light distribution patterns that make up the light distribution pattern P shown in Figure 2 are given the same reference numbers, and repeated explanations will be omitted.

The light distribution pattern P10 is formed by combining the high beam light distribution pattern PH10, the low beam light distribution pattern PL, and the side light distribution pattern PC. The side light distribution pattern PC is formed by the right light distribution pattern PCR and the left light distribution pattern PCL.

Light sources 30a to 30g of the light source unit 32 form partial patterns PHa to PHg, respectively. Specifically, light source 30a of the high beam lamp unit 3 forms partial pattern PHa. Light source 30b forms partial pattern PHb. Light source 30c forms partial pattern PHc. Light source 30d forms partial pattern PHd. Light source 30e forms partial pattern PHe. Light source 30f forms partial pattern PHf. Light source 30g forms partial pattern PHg. The partial patterns PHa to PHg are combined to form the high beam light distribution pattern PH10. In other words, the high beam light distribution pattern PH10 is composed of partial patterns PHa to PHg formed in parallel along the horizontal direction by light from light sources 30a to 30g.

Next, the method of adjusting the high beam distribution pattern PH10 by the lamp control unit 5 will be described with reference to Figures 15 to 21. Note that in the light distribution pattern P10 illustrated in Figures 16, 18, and 20, the side light distribution pattern is not shown. Also, below, the control of the high beam lamp unit 3 when traveling around a right-facing corner will be described. The control of the high beam lamp unit 3 when traveling around a left-facing corner is the same as the control of the high beam lamp unit 3 when traveling around a right-facing corner, except that the left and right directions are reversed, so a description of it will be omitted.

When the motorcycle 100 is traveling in a straight line, i.e., when the motorcycle 100 is traveling with the body perpendicular to the road surface, as illustrated in Figure 15, the lamp control unit 5 controls the amount of current supplied to the light sources 30a to 30g of the high beam lamp unit 3 so that the highest current value is supplied to the light source 30d that forms the partial pattern PHd in the center (on the vertical line V), and the lowest current value is supplied to the light sources that form the partial patterns located to the left and right.

On the other hand, when the body of the motorcycle 100 is tilted to the right, such as when traveling around a right-facing corner, the lamp control unit 5 changes the amount of current supplied to the light sources 30a-30g according to the bank angle of the body. For example, the lamp control unit 5 reduces the light intensity of the light sources 30a-30g on the opposite side of the banking direction and increases the light intensity of the light sources on the same side as the banking direction.

Specifically, as illustrated in Figures 16 and 17, when the lamp control unit 5 determines that the bank angle A of the vehicle body is equal to or greater than the fourth threshold value Ath4, it reduces the amount of current supplied to light sources 30a to 30d and increases the amount of current supplied to light sources 30f and 30g. The fourth threshold value Ath4 can be set appropriately, for example, based on a bank angle at which a portion of the high beam distribution pattern PH10 is expected to be farther from the horizon H and therefore not contribute to long-distance visibility. The term "fourth" in the fourth threshold value Ath4 is used merely to distinguish it from the first threshold value Ath1 to the third threshold value Ath3 described above, and does not matter whether the fourth threshold value Ath4 is larger or smaller than the first threshold value Ath1 to the third threshold value Ath3.

As a result, as illustrated in Figure 16, the high beam distribution pattern PH10 is formed by combining partial patterns PHb to PHg. Furthermore, the high beam distribution pattern PH10 is a light distribution pattern in which the partial patterns PHb to PHd that are farther away from the horizon H have low illuminance, and the partial patterns PHe to PHg that are closer to the horizon H have high illuminance.

When the vehicle body is tilted further to the right and the bank angle A of the vehicle body is determined to be equal to or greater than the fifth threshold Ath5, which is greater than the fourth threshold Ath4, as illustrated in Figures 18 and 19, the lamp control unit 5 reduces the value of the current supplied to light source 30b and increases the value of the current supplied to light source 30e. The fifth threshold Ath5 is set appropriately, for example, depending on the number and size of the partial patterns formed by the light sources 30 of the high beam lamp unit 3.

As a result, as illustrated in Figure 18, the high beam distribution pattern PH10 is formed by combining the partial patterns PHc to PHg. Furthermore, the high beam distribution pattern PH10 is a light distribution pattern in which the partial patterns PHc and PHd that are farther away from the horizon H have low illuminance, and the partial patterns PHe to PHg that are closer to the horizon H have high illuminance.

If the vehicle body is further tilted to the right and it is determined that the bank angle A of the vehicle body is equal to or greater than the sixth threshold value Ath6, which is greater than the fifth threshold value Ath5, as illustrated in Figures 20 and 21, the lamp control unit 5 reduces the value of the current supplied to light source 30c. The lamp control unit 5 also reduces the value of the current supplied to light source 30g. The sixth threshold value Ath6 is set appropriately, for example, depending on the number and size of the partial patterns formed by the light sources 30 of the high beam lamp unit 3.

As a result, as illustrated in Figure 20, the high beam distribution pattern PH10 is formed by combining partial patterns PHd to PHg. Furthermore, the high beam distribution pattern PH10 becomes a light distribution pattern in which the illuminance of partial patterns PHg that move away from the horizon H changes to a lower level.

As described above, the lamp control unit 5 changes the light intensity of the light sources 30a-30g of the high beam lamp unit 3 according to the bank angle of the vehicle body. As a result, the total current supplied to the light sources 30a-30g changes according to the bank angle of the vehicle body. For example, as illustrated in Figures 17, 19, and 21, the total current supplied to the light sources 30a-30g decreases as the bank angle of the vehicle body increases. Therefore, compared to when the motorcycle 100 illustrated in Figure 15 is traveling with the body perpendicular to the road surface, the power consumption of the high beam lamp unit 3 can be reduced when the vehicle body is banked. Meanwhile, forward visibility can be ensured when the vehicle body is banked by increasing the light intensity of the light sources that form partial patterns that contribute to long-distance visibility (e.g., partial patterns formed near the horizon H) according to the bank angle of the vehicle body.

In addition, when the vehicle body is banked, the lamp control unit 5 reduces the light intensity of the light sources 30a to 30g that are on the opposite side of the banking direction and increases the light intensity of the light sources on the same side as the banking direction. This reduces the light intensity of the light sources that form partial patterns away from the horizon H and increases the light intensity of the light sources that form partial patterns near the horizon H, thereby reducing the power consumption of the high beam lamp unit 3 while ensuring forward visibility when the vehicle is banked.

20 and 21, if the bank angle increases and the partial pattern PHg formed by the light sources 30g on the same side as the banking direction is formed downward away from the horizontal line H, the light intensity of the light sources 30g forming the partial pattern PHg is reduced. This further reduces the power consumption of the high beam lamp unit 3.

In addition to the bank angle of the vehicle body, when an object is detected in front of the vehicle, the lamp control unit 5 may change the light intensity of the light sources 30a to 30g of the high beam lighting unit 3 so that a dark area is formed in the area of the high beam distribution pattern PH10 corresponding to the object.

For example, when the lamp control unit 5 determines that an oncoming vehicle CV is present in the area ahead of the vehicle based on the bank angle information of the vehicle body and environmental information outside the vehicle, it dims or turns off light sources 30e and 30f of the light sources 30a to 30g of the high beam lighting unit 3 that form partial patterns PHe and PHf in the high beam distribution pattern PH10 that include the area corresponding to the oncoming vehicle CV, as illustrated in Figure 22.

With this configuration, a dark area is formed in the area of the high beam distribution pattern PH10 facing the oncoming vehicle CV, thereby reducing glare for the oncoming vehicle CV.

In the above embodiment, the high beam lamp unit 3 has seven light sources, but the number of light sources may be increased or decreased.

In addition, in the above embodiment, an oncoming vehicle CV was described as an example of an object, but objects may also include pedestrians and vehicles ahead.

Second Embodiment
Next, a headlamp 10 according to a second embodiment will be described. As shown in Fig. 23 , the headlamp 10 according to the second embodiment includes a lamp control unit 15. The low beam lamp unit 2, the high beam lamp unit 3, and the cornering lamps 4 are connected to the lamp control unit 15. The lamp control unit 15 controls the low beam lamp unit 2, the high beam lamp unit 3, and the cornering lamps 4. The lamp control unit 15 is an example of a control unit.

The lamp control unit 15 is electrically connected to a bank angle sensor 6 and a vehicle speed sensor 17. The bank angle sensor 6 detects the tilt state of the motorcycle 100. Specifically, the bank angle sensor 6 is a sensor capable of detecting the bank angle of the body of the motorcycle 100. The bank angle sensor 6 is composed of, for example, a gyro sensor. The vehicle speed sensor 17 detects the speed of the motorcycle 100.

Vehicle body bank angle information is transmitted from the bank angle sensor 6 to the lamp control unit 15. Vehicle speed information is transmitted from the vehicle speed sensor 17 to the lamp control unit 15. The lamp control unit 15 adjusts the lateral light distribution pattern PC by changing the light intensity of the light source 40 of the cornering lamp 4 based on the vehicle body bank angle information and vehicle speed information.

The method for adjusting the side light distribution pattern PC by the lamp control unit 15 is explained below using Figures 24 to 32. Note that the following describes the control of the right cornering lamp 4R when traveling around a right-facing corner. The control of the left cornering lamp 4L when traveling around a left-facing corner is the same as the control of the right cornering lamp 4R, except that the left and right directions are reversed, so an explanation of this will be omitted.

For example, when the body of the motorcycle 100 is tilted to the right while traveling around a right-facing corner, the lamp control unit 15 changes the light intensity of the light sources 40R1, 40R2, and 40R3 of the right-side cornering lamp 4R in relation to the bank angle of the body in different ways depending on the vehicle speed.

Specifically, as illustrated in FIG. 24, the lamp control unit 15 determines whether the bank angle A of the vehicle body is equal to or greater than the first threshold value Ath11 (STEP 1). If it is determined that the bank angle A of the vehicle body is less than the first threshold value Ath11 (NO in STEP 1), the process returns to STEP 1. The first threshold value Ath11 can be set appropriately, for example, based on the minimum bank angle at which the body of the motorcycle 100 is assumed to be tilted in order to travel around a corner on a road.

If it is determined that the bank angle A of the vehicle body is equal to or greater than the first threshold Ath11 (YES in STEP 1), the lamp control unit 15 determines whether the vehicle speed V is equal to or greater than the threshold Vth (STEP 2). The threshold Vth can be set appropriately based on, for example, the vehicle speed assumed when the motorcycle 100 is traveling around a gentle curve.

When it is determined that the vehicle speed V is equal to or greater than the threshold value Vth (YES in STEP 2), the lamp control unit 15 controls the right cornering lamp 4R so that the light intensity of the light sources 40R1, 40R2, and 40R3 of the right cornering lamp 4R changes in a first manner according to the bank angle of the vehicle body (STEP 3).

Figure 25 shows the relationship between the current value supplied to light sources 40R1, 40R2, and 40R3 and the bank angle of the vehicle body when the light intensity of light sources 40R1, 40R2, and 40R3 changes in the first manner. As illustrated in Figure 25, for example, the lamp control unit 15 adjusts the right light distribution pattern PCR so that, as the bank angle of the vehicle body increases, the light intensity of light sources 40R1, 40R2, and 40R3 decreases in order, starting with the light source that forms the lower region of the right light distribution pattern PCR.

Specifically, when the body of the motorcycle 100 is tilted to the right (i.e., when the bank angle A of the body is equal to or greater than the first threshold value Ath11), the lamp control unit 15 supplies current to the light sources 40R1, 40R2, and 40R3 of the right cornering lamp 4R.

As a result, light sources 40R1, 40R2, and 40R3 are turned on, and as illustrated in Figure 26, the right-hand light distribution pattern PCR formed on the road surface R is a light distribution pattern that is a combination of partial pattern PCR1 formed by light source 40R1, partial pattern PCR2 formed by light source 40R2, and partial pattern PCR3 formed by light source 40R3.

If the vehicle body is tilted further to the right and the bank angle A of the vehicle body is determined to be equal to or greater than a second threshold value Ath12, which is greater than the first threshold value Ath11, the lamp control unit 15 reduces the amount of current supplied to the light source 40R1 that forms the partial pattern PCR1 that constitutes the lower region of the right light distribution pattern PCR. The second threshold value Ath12 can be set appropriately, for example, based on a bank angle at which the lower region of the right light distribution pattern PCR is not expected to contribute to long-distance visibility.

As a result, the amount of light from light source 40R1 decreases, and as illustrated in Figure 27, the right-hand light distribution pattern PCR becomes a light distribution pattern that is a combination of partial pattern PCR2, partial pattern PCR3, and partial pattern PCR1, which has an illuminance lower than that of partial pattern PCR2 and partial pattern PCR3.

Furthermore, if the vehicle body is tilted to the right and the bank angle A of the vehicle body is determined to be equal to or greater than a third threshold value Ath13, which is greater than the second threshold value Ath12, the lamp control unit 15 reduces the amount of current supplied to light source 40R2, which forms partial pattern PCR2 located above partial pattern PCR1. The lamp control unit 15 also reduces the amount of current supplied to light source 40R1 to be less than the amount of current supplied to light source 40R2. The third threshold value Ath13 is set appropriately depending on, for example, the number and size of the partial patterns formed by the light sources 40 of the cornering lamp 4.

As a result, the light intensity of light source 40R1 and the light intensity of light source 40R2 decrease, and as illustrated in Figure 28, the right-hand light distribution pattern PCR becomes a light distribution pattern that is a combination of partial pattern PCR3, partial pattern PCR2 which has an illuminance lower than that of partial pattern PCR3, and partial pattern PCR1 which has an illuminance lower than that of partial pattern PCR2.

Returning to Figure 24, if it is determined in STEP 2 that the vehicle speed V is less than the threshold value Vth (NO in STEP 2), the lamp control unit 15 controls the right cornering lamp 4R so that the light intensity of the light sources 40R1, 40R2, 40R3 of the right cornering lamp 4R changes in a second manner different from the first manner depending on the bank angle of the vehicle body (STEP 4).

Figure 29 shows the relationship between the current value supplied to light sources 40R1, 40R2, and 40R3 and the bank angle of the vehicle body when the light intensity of light sources 40R1, 40R2, and 40R3 changes in a second manner. As illustrated in Figure 29, for example, the lamp control unit 15 adjusts the right light distribution pattern PCR so that, as the bank angle of the vehicle body increases, the light intensity of light sources 40R1, 40R2, and 40R3 decreases in order, starting with the light source that forms the upper region of the right light distribution pattern PCR.

Specifically, when the body of the motorcycle 100 is tilted to the right (i.e., when the bank angle A of the body is equal to or greater than the first threshold Ath11), the lamp control unit 15 supplies current to the light sources 40R1, 40R2, and 40R3 of the right cornering lamp 4R. This causes the light sources 40R1, 40R2, and 40R3 to light up, and as illustrated in FIG. 30, the rightward light distribution pattern PCR formed on the road surface R is a light distribution pattern that is a combination of the partial pattern PCR1 formed by the light source 40R1, the partial pattern PCR2 formed by the light source 40R2, and the partial pattern PCR3 formed by the light source 40R3.

If the vehicle body is tilted further to the right and the bank angle A of the vehicle body is determined to be equal to or greater than the fourth threshold Ath14, which is greater than the first threshold Ath11, the lamp control unit 15 reduces the amount of current supplied to the light source 40R3 that forms the partial pattern PCR3 that constitutes the upper region of the right light distribution pattern PCR. The fourth threshold Ath14 can be set appropriately, for example, based on a bank angle at which the upper region of the right light distribution pattern PCR is not expected to contribute to near visibility.

As a result, the amount of light from light source 40R3 decreases, and as illustrated in Figure 31, the right-hand light distribution pattern PCR becomes a light distribution pattern that is a combination of partial pattern PCR1, partial pattern PCR2, and partial pattern PCR3, which has an illuminance lower than that of partial pattern PCR1 and partial pattern PCR2.

Furthermore, if the vehicle body is tilted to the right and the bank angle A of the vehicle body is determined to be equal to or greater than the fifth threshold Ath15, which is greater than the fourth threshold Ath14, the lamp control unit 15 reduces the amount of current supplied to the light source 40R2 that forms the partial pattern PCR2 located below the partial pattern PCR3. The lamp control unit 15 also reduces the amount of current supplied to the light source 40R3 to be less than the amount of current supplied to the light source 40R2. The fifth threshold Ath15 is set appropriately depending on, for example, the number and size of the partial patterns formed by the light sources 40 of the cornering lamp 4.

As a result, the light intensity of light source 40R3 and the light intensity of light source 40R2 decrease, and as illustrated in Figure 32, the right-hand light distribution pattern PCR becomes a light distribution pattern that is a combination of partial pattern PCR1, partial pattern PCR2 which has an illuminance lower than that of partial pattern PCR1, and partial pattern PCR3 which has an illuminance lower than that of partial pattern PCR2.

With the above-described configuration, the lamp control unit 15 changes the light intensity of the light sources 40R1, 40R2, and 40R3 of the right cornering lamp 4R in accordance with the bank angle of the motorcycle 100 body and the vehicle speed. As a result, the total current supplied to the light sources 40R1, 40R2, and 40R3 is reduced compared to a configuration in which the total current does not change in accordance with the bank angle of the body and the vehicle speed. This reduces the power consumption of the right cornering lamp 4R.

Furthermore, from the perspective of forward visibility, it is preferable to change the range of light illumination depending on the curve condition of the corner being traversed. For example, when traversing a sharp curve, light is illuminated onto the road surface close to the vehicle body to ensure close-up visibility. For example, when traversing a gentle curve, light is illuminated into the distance to ensure long-distance visibility. Since the light intensity of light sources 40R1, 40R2, and 40R3 is changed depending on the estimated speed of the vehicle traversing a corner with a specified curve condition, it is possible to illuminate light onto the desired range depending on the curve condition of the corner being traversed. Therefore, forward visibility is improved when the vehicle is banking.

Furthermore, the lamp control unit 15 varies the change in light intensity of light sources 40R1, 40R2, and 40R3 relative to the bank angle of the vehicle body depending on the vehicle speed. For example, the change in light intensity of light sources 40R1, 40R2, and 40R3 relative to the vehicle speed assumed to be traveling around a gentle curve (e.g., high speed) (first mode) is different from the change in light intensity of light sources 40R1, 40R2, and 40R3 relative to the vehicle speed assumed to be traveling around a sharp curve (e.g., low speed) (second mode). This makes it possible to illuminate a desired range depending on the curve condition of the corner being traveled, improving forward visibility.

For example, when the lamp control unit 15 determines that the vehicle speed is above a threshold, it reduces the light intensity, starting with the light source 40 that forms the lower region within the side light distribution pattern PC, as the bank angle of the vehicle body increases. In other words, as the bank angle of the vehicle body increases, it reduces the light intensity of the light sources that irradiate the road surface near the vehicle body, which does not contribute to long-distance visibility. On the other hand, it does not reduce the light intensity of the light sources that irradiate light in the distance, which contributes to long-distance visibility. As a result, for example, when driving around a gentle curve while maintaining a high vehicle speed, it is possible to reduce the power consumption of the right cornering lamp 4R while maintaining long-distance visibility.

Alternatively, when the lamp control unit 15 determines that the vehicle speed is below a threshold, it reduces the light intensity of the light sources 40, starting from the light source 40 that forms the upper region of the side light distribution pattern PC, as the bank angle of the vehicle body increases. In other words, as the bank angle of the vehicle body increases, it reduces the light intensity of the light sources 40 that emit light to distant areas that do not contribute to near-range visibility. On the other hand, it does not reduce the light intensity of the light sources that emit light to the road surface near the vehicle body that contributes to near-range visibility. This makes it possible to reduce the power consumption of the right-side cornering lamp 4R while maintaining near-range visibility, for example, when slowing the vehicle down to travel around a sharp curve.

Furthermore, as illustrated in Figures 25 and 29, the lamp control unit 15 reduces the light intensity of light sources 40R1, 40R2, and 40R3 so that the light output of each of light sources 40R1, 40R2, and 40R3 decreases as the bank angle of the vehicle body increases. In this way, by dimming each of light sources 40R1, 40R2, and 40R3 in accordance with the bank angle of the vehicle body, it is possible to prevent the driver of the vehicle from feeling uncomfortable. Note that each of light sources 40R1, 40R2, and 40R3 may be dimmed in stages, as illustrated in Figures 25 and 29, or continuously.

In this embodiment, when the body of the motorcycle 100 is tilted to the right (i.e., when the bank angle A of the body is equal to or greater than the first threshold value Ath11), all of the light sources 40R1, 40R2, and 40R3 are turned on. However, the motorcycle 100 may be configured so that only some of the light sources 40R1, 40R2, and 40R3 are turned on when the body of the motorcycle 100 is tilted to the right.

In addition, in this embodiment, the area illuminated by light sources 40R1, 40R2, and 40R3 is not changed depending on the vehicle speed, but the light intensity of light sources 40R1, 40R2, and 40R3 is changed so that the illuminance of the right light distribution pattern PCR varies depending on the vehicle speed. However, the lamp control unit 15 may also change the light intensity of light sources 40R1, 40R2, and 40R3 so that light is illuminated to different areas in front of the vehicle depending on the vehicle speed. For example, the lamp control unit 15 turns off light sources 40R1, 40R2, and 40R3 rather than dimming them depending on the bank angle of the vehicle body. In such a case, the power consumption of the right cornering lamp 4R can be further reduced.

In the above embodiment, the lamp control unit 15 changes the light intensity of the light sources 40R1, 40R2, and 40R3 in two different ways depending on the comparison between the vehicle speed V and the threshold value Vth. However, for example, the lamp control unit 15 may change the light intensity of the light sources 40R1, 40R2, and 40R3 in three or more different ways by comparing the vehicle speed V with multiple threshold values Vth.

The above describes an embodiment of the present disclosure, but it goes without saying that the technical scope of the present disclosure should not be interpreted as being limited by the description of this embodiment. This embodiment is merely an example, and it will be understood by those skilled in the art that various modifications of the embodiment are possible within the scope of the invention described in the claims. The technical scope of the present disclosure should be determined based on the scope of the invention described in the claims and its equivalents.

In the above embodiment, the low beam lamp unit 2, the high beam lamp unit 3, and the cornering lamp 4 may be integrated to form a single integrated unit. The headlamp 1, 10 may, for example, have an integrated unit provided on the left side of the vehicle body and an integrated unit provided on the right side of the vehicle body. These two integrated units may be controlled by a single lamp control unit 5, 15. Alternatively, the headlamp 1, 10 may have two lamp control units 5, 15, with each integrated unit controlled by a corresponding lamp control unit 5, 15.

In the above embodiment, a pair of cornering lamps 4 (4R, 4L) are provided on the left and right sides of the vehicle body, but this configuration is not limited to this. Also, while the cornering lamps 4 have three light sources on each side, the number of light sources may be increased or decreased.

In the above embodiment, the bank angle of the vehicle body is detected by the bank angle sensor 6. However, the bank angle of the vehicle body may also be calculated based on an image captured by a camera mounted on the vehicle body, for example.

In the above embodiment, motorcycle 100 is given as an example of a vehicle that travels around corners by leaning the body in the direction of the turn. However, the number of wheels of the vehicle is not limited as long as the vehicle is capable of traveling around corners by leaning the body in the direction of the turn, like motorcycle 100. For example, the vehicle may also include three-wheeled motor vehicles, four-wheeled motor vehicles, etc.

This application is based on Japanese Patent Application No. 2021-035683 filed on March 5, 2021 and Japanese Patent Application No. 2021-035684 filed on March 5, 2021, the contents of which are incorporated herein by reference.

Claims (8)

A vehicle lamp provided on a vehicle that travels around a corner by tilting the vehicle body in the direction of the turn,
a high beam light source that forms a high beam light distribution pattern;
a side light source that forms a side light distribution pattern on a side of the high beam light distribution pattern when the vehicle body is banking;
a control unit that controls the high beam light source and the side light source;
It is equipped with
the control unit changes the light intensity of the side light source in accordance with a bank angle of the vehicle body,
When an object outside the vehicle is detected, the control unit changes the light intensity of the side light source so as to form a dark area in the side light distribution pattern in an area corresponding to the object. the side light distribution pattern includes a plurality of partial patterns formed adjacent to each other in the up-down direction,
the side light source has a plurality of light emitting elements that form the plurality of partial patterns;
2. The vehicle lamp according to claim 1, wherein the control unit reduces the light intensity of the plurality of light-emitting elements in order from a light-emitting element forming a lower region in the side light distribution pattern as the bank angle of the vehicle body increases. The vehicle lamp according to claim 2, wherein, when an object outside the vehicle is detected, the control unit turns off light-emitting elements among the plurality of light-emitting elements that form an area in the lateral light distribution pattern corresponding to the object. A vehicle lamp according to any one of claims 1 to 3, wherein the control unit varies the light intensity of the high beam light source according to the bank angle of the vehicle body. The high beam light source includes a plurality of light emitting elements arranged in parallel in the left-right direction,
the high beam distribution pattern is composed of a plurality of regions formed in parallel along a horizontal direction by light from the plurality of light-emitting elements,
5. The vehicular lamp according to claim 4, wherein, when the vehicle body is banked, the control unit reduces the light intensity of the light-emitting elements of the plurality of light-emitting elements that are on the opposite side to the banking direction and increases the light intensity of the light-emitting elements that are on the same side as the banking direction. The vehicle lamp according to claim 4 or 5, wherein, when an object outside the vehicle is detected, the control unit changes the light intensity of the high beam light source so as to form a dark area in the high beam light distribution pattern in an area corresponding to the object. A vehicle lamp provided on a vehicle that travels around a corner by tilting the vehicle body in the direction of the turn,
a side light source that forms a side light distribution pattern on a side of the high beam light distribution pattern when the vehicle body is banked;
a control unit that changes the light intensity of the side light source in accordance with the bank angle of the vehicle body and the speed of the vehicle ,
the side light distribution pattern includes a plurality of partial patterns formed adjacent to each other in the up-down direction,
the side light source has a plurality of light emitting elements that form the plurality of partial patterns;
when it is determined that the speed of the vehicle is less than a threshold value, the control unit reduces the light amount of the plurality of light-emitting elements in order from the light-emitting element that forms an upper region in the side light distribution pattern as the bank angle of the vehicle body increases,
When the control unit determines that the speed of the vehicle is equal to or greater than a threshold, the control unit reduces the amount of light from the plurality of light-emitting elements in order, starting with the light-emitting elements that form a lower region within the lateral light distribution pattern, as the bank angle of the vehicle body increases . 8. The vehicular lamp according to claim 7, wherein the control unit changes the light intensity of the side light source so that light is irradiated onto different areas outside the vehicle depending on the speed of the vehicle when the vehicle body is banked.