JP2019137382A - Lighting control device for light source, lighting fixture for vehicle and lighting control method for light source - Google Patents

Abstract

To reduce lighting delay when turning on a light source in accordance with a bank angle of a vehicle.SOLUTION: A lighting control device for controlling a lighting state of a light source installed to a vehicle sets time necessary for lighting the light source so as to become shorter as a vehicle speed of the vehicle becomes faster when the vehicle has a tilt angle of the vehicle in a vehicle width direction that is larger than a reference value to turn on the light source in the set time.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lighting control technique for a light source mounted on a vehicle.

  In a vehicle such as a motorcycle, the vertical position of the headlamp is relatively lowered due to the tilt of the vehicle body when turning, so that the light from the headlamp may be difficult to reach far away. For such inconvenience, a technique is known in which the shortage of light irradiation is compensated by turning on an auxiliary lamp (light source) according to the inclination angle (bank angle) of the vehicle and irradiating light when the vehicle turns. .

For example, in Japanese Patent Application Laid-Open No. 2017-119474 (Patent Document 1), on the premise of the above technique, an auxiliary light is provided in order to reduce a sense of discomfort to the passenger due to the auxiliary light suddenly lighting. There is described a lighting control technique for setting a preceding lighting state with lower light brightness before setting lighting state. Specifically, a threshold value θ corresponding to the set lighting state and another threshold value θ ₀ smaller than the threshold value θ are set, and the auxiliary lamp is turned on at a relatively low brightness when the bank angle exceeds θ _0. ing. Further, in a certain range where the bank angle exceeds θ, the brightness of the light is increased in proportion to the bank angle, and the auxiliary lamp is turned on.

  Further, Japanese Patent Application Laid-Open No. 2017-119475 (Patent Document 2) assumes that the technique described in Patent Document 1 described above is used, and turns on the auxiliary lamp when the bank angle changes greatly due to a sharp inclination of the vehicle body. In order to avoid the occurrence of a delay, the threshold θ is variably set so that the threshold θ decreases as the change in the bank angle per unit time increases, so that the auxiliary lamp lighting timing is advanced as necessary. The lighting control technology is described.

  By the way, in the prior art according to Patent Document 2 described above, an attempt is made to reduce the delay in lighting of the auxiliary light based on the amount of change in the bank angle per unit time. The vehicle body continues to tilt from the start of the change of angle until the calculation of the change amount of the bank angle per unit time. For this reason, for example, when the inclination of the vehicle body is relatively steep, the setting of the threshold value θ corresponding to the amount of change in the bank angle per unit time may not be in time, resulting in a delay in lighting the auxiliary lamp. is there.

JP 2017-119474 A JP 2017-119475 A

  The specific aspect which concerns on this invention makes it one of the objectives to provide the technique which can reduce the lighting delay at the time of lighting a light source according to the bank angle of a vehicle.

[1] A lighting control device for a light source according to one aspect of the present invention is a device for controlling a lighting state of a light source installed in a vehicle, and the inclination angle of the vehicle body in the vehicle width direction is a reference value. When it is larger, the light source lighting control device sets a time required for lighting the light source to be shorter as the vehicle speed of the vehicle becomes higher, and turns on the light source over the set time.
[2] A lighting control device for a light source according to one aspect of the present invention is (a) a device for controlling a lighting state of a light source installed in a vehicle, and (b) an inclination angle of a vehicle body of the vehicle. A determination unit that determines whether or not the vehicle is larger than a reference value; and (c) when the determination unit determines that the inclination angle of the vehicle body is larger than the reference value, the light source is turned on according to the vehicle speed of the vehicle. A setting unit that sets the time required for lighting to be shorter as the vehicle speed of the vehicle increases, and (d) a lighting control unit that lights the light source over the time set by the setting unit, It is the lighting control apparatus of the light source containing.
[3] A vehicular lamp according to an aspect of the present invention is a vehicular lamp including the lighting control device according to 1 or 2 above and a light source controlled by the lighting control device.
[4] A lighting control method for a light source according to one aspect of the present invention is a method for controlling a lighting state of a light source installed in a vehicle, wherein the inclination angle of the vehicle body in the vehicle width direction of the vehicle is a reference value. In the case of being larger, the light source lighting control method is set such that the time required to turn on the light source is set to be shorter as the vehicle speed of the vehicle is larger, and the light source is turned on over the set time.

  According to the said structure, it becomes possible to reduce the lighting delay at the time of lighting a light source according to the bank angle of a vehicle.

FIG. 1 is a block diagram illustrating the configuration of the vehicular lamp according to the first embodiment. FIG. 2 is a diagram schematically showing the lamp unit as viewed from the front. FIG. 3 is a diagram schematically illustrating a state of light distribution formed by the lamp unit. FIG. 4 is a diagram for explaining data for setting the lighting time stored in the memory. FIG. 5 is a diagram for explaining an operation of lighting each auxiliary light source at a different timing according to the size of the bank angle. FIG. 6 is a diagram for explaining the relationship between the vehicle speed and the lighting time. FIG. 7 is a flowchart illustrating a processing procedure performed by the control unit. FIG. 8 is a block diagram illustrating a configuration of the vehicular lamp according to the second embodiment. FIG. 9 is a diagram for explaining the relationship between the vehicle speed and acceleration and the lighting time. FIG. 10 is a diagram for explaining data for setting the lighting time stored in the memory. FIG. 11 is a flowchart illustrating a processing procedure performed by the control unit.

(First embodiment)
FIG. 1 is a block diagram illustrating the configuration of the vehicular lamp according to the first embodiment. The illustrated vehicle lamp is installed in a vehicle that travels with the vehicle body tilted in the vehicle width direction when turning, such as a two-wheeled vehicle, and is used to irradiate light in front of the vehicle. This vehicular lamp includes a bank angle detection unit 11, a vehicle speed detection unit 12, a control unit 13, a memory 14, and a lamp unit 19.

  The bank angle detector 11 detects a bank angle that is an inclination angle of the vehicle body in the vehicle width direction. The bank angle detection unit 11 is configured using, for example, a gyro sensor. If the vehicle is equipped with a gyro sensor or the like for other purposes, the bank angle detection unit 11 may be omitted by using an output from the sensor or the like.

  The vehicle speed detector 12 detects the speed (vehicle speed) when the vehicle is traveling. In the case where the vehicle is provided with a vehicle speed sensor or the like for other purposes, the vehicle speed detection unit 12 may be omitted by using the vehicle speed detected by the sensor or the like.

  The control unit 13 is for controlling the overall operation of the vehicular lamp, and is realized, for example, by causing a microcomputer to execute a predetermined operation program.

  The memory 14 is connected to the control unit 13 and stores data used for information processing in the control unit 13.

  The lamp unit 19 is provided at a predetermined position in the front portion of the vehicle, and is used to irradiate light in front of the vehicle. In the present embodiment, the lamp unit 19 includes a main light source 20 for irradiating light ahead of the vehicle during travel and a headlight when the vehicle body of the vehicle tilts and the light irradiation range of the main light source 20 changes. An auxiliary light source unit 21 is provided for assisting light irradiation in a range where light from the lamp is difficult to be irradiated. For this reason, the auxiliary light source unit 21 is provided, for example, one each on the left and right of the front portion of the vehicle, corresponding to the case where the vehicle body is tilted to the left and right, but in FIG. Only show. The auxiliary light source unit 21 in the lamp unit 19 has a plurality (three in this example) of auxiliary light sources 22, 23, and 24.

  FIG. 2 is a diagram schematically showing the lamp unit as viewed from the front. As shown in the figure, the main light source 20 is used to irradiate main light forward of the vehicle during traveling, and is disposed in the center of the lamp unit 19. The auxiliary light sources 22, 23, and 24 in the auxiliary light source unit 21 are arranged one on each of the left and right sides in the lamp unit 19, and can be turned on and off independently, respectively, depending on the bank angle of the vehicle body. Lights up at different times. The lighting states of the main light source 20 and the auxiliary light sources 22, 23, and 24 are controlled by the control unit 13 described above. The main light source 20 and the auxiliary light sources 22, 23, and 24 are configured using light emitting elements such as LEDs, for example. A halogen lamp, a discharge lamp, or the like may be used.

  FIG. 3 is a diagram schematically illustrating a state of light distribution formed by the lamp unit. FIG. 3A shows light distribution in a state where the vehicle body is not tilted. As shown in the figure, the main light source 120 forms a main light distribution 120 having a uniform left and right shape in front of the vehicle. FIG. 3B shows light distribution in a state where the vehicle body is tilted. As shown in the figure, the main light distribution 120 by the main light source 20 is tilted from the horizontal direction, and in the example shown in the figure, the irradiation light by the main light source 20 is reduced in the left side region. Visibility is supplemented by forming auxiliary light distributions 122, 123, and 124, respectively.

  Refer to FIG. 1 again. The above-described control unit 13 is a functional block configured by executing a predetermined operation program in the microcomputer, as a traveling state determination unit (determination unit) 15, a lighting time setting unit (setting unit) 16, and a lighting control unit 17. It is comprised including.

  Based on the bank angle of the vehicle body detected by the bank angle detection unit 11, the traveling state determination unit 15 determines whether or not the traveling vehicle is in a traveling state when entering a curve (curved road). Specifically, for example, a reference value θv larger than 0 ° is set in advance, it is determined whether the bank angle detected by the bank angle detection unit 11 is equal to or larger than the reference value θv, and the reference When the value θv or more is reached, it can be determined that the vehicle is traveling when entering the curve. The reference value θv may be set as appropriate. For example, the reference value θv can be set to 5 ° in absolute value. In this case, for example, assuming that the inclination angle to the left is a positive value and the inclination angle to the right is a negative value, when it becomes + 5 ° or more, or when it becomes −5 ° or less, It can be determined that the vehicle has entered the curve. It may be determined whether or not the absolute value of the bank angle has become larger than the reference value θv.

  The lighting time setting unit 16 uses the data stored in the memory 14 according to the vehicle speed detected by the vehicle speed detection unit 12 to determine the lighting time when the auxiliary light sources 22, 23, 24 of the lamp unit 19 are turned on. Set. The lighting time here is the time required for the lighting rate of each auxiliary light source 22, 23, 24 to change from 0% (relatively low setting value) to 100% (relatively high setting value), that is, The time required for lighting. The relatively low set value is a value set in advance as, for example, the lowest light intensity (luminous intensity) when operating the vehicular lamp of the present embodiment, and is typically 0%. Other values may be set. Similarly, the relatively high set value is, for example, a value set in advance as the highest light intensity (luminous intensity) when operating the vehicular lamp of the present embodiment, and is typically 100%. , Other values may be set.

  The lighting control unit 17 is set by the lighting time setting unit 16 when it is determined by the traveling state determination unit 15 that the vehicle has entered the curve (that is, when the bank angle is determined to be greater than or equal to the reference value θv). The auxiliary light sources 22, 23, and 24 are turned on according to the lighting time. In the present embodiment, the lighting control unit 17 lights the auxiliary light sources 22, 23, and 24 at different timings according to the size of the bank angle detected by the bank angle detection unit 11. The lighting control unit 17 also performs lighting control of the main light source 20.

FIG. 4 is a diagram for explaining data for setting the lighting time stored in the memory. As shown in the figure, the memory 14 stores a data table that represents the vehicle speed and the lighting time corresponding to each vehicle speed. For example, when the vehicle speed is 50 km / h, the lighting time setting unit 16 reads the corresponding lighting time T ₅₀ (ms) from the memory 14 and sets the lighting time based on the read time. In the present embodiment, the relationship between the two is set so that the lighting time decreases as the vehicle speed increases. What is necessary is just to set to the suitable value calculated | required by experiment etc. about the specific value of lighting time. In order to make the explanation easy to understand, the vehicle speed is set in increments of 5 km / h. However, the present invention is not limited to this, and the vehicle speed increment is arbitrarily set and the corresponding lighting time is stored. Can be kept.

FIG. 5 is a diagram for explaining an operation of lighting each auxiliary light source at a different timing according to the size of the bank angle. FIG. 5 shows a graph in which the horizontal axis is associated with the bank angle and the vertical axis is associated with the lighting rate. As shown in the lower side in the figure, three different thresholds are provided for the bank angle, lighting control unit 17, the auxiliary light source 22 is turned on when the bank angle becomes the smallest threshold value theta ₁ or more. Further, the lighting control unit 17 turns on the auxiliary light source 23 when the bank angle becomes equal to or larger than the threshold value θ ₂ larger than θ ₁ . Further, the lighting control unit 17, the auxiliary light source 24 is turned on when the bank angle becomes theta ₁ and theta ₂ is greater than the threshold value theta ₃ or more. The auxiliary light sources 22, 23, and 24 are not turned on when the bank angle becomes equal to or greater than the threshold values θ ₁ , θ ₂ , and θ ₃ , but the bank angle is determined based on the threshold values θ ₁ , θ ₂ , and θ ₃ . Each auxiliary light source 22, 23, 24 may be turned on when it becomes larger.

In the present embodiment, as described above, the reference value θ _V having a value smaller than the respective threshold values θ ₁ , θ ₂ , θ ₃ is set, and the lighting time setting unit 16 has the bank angle set to the reference value θ. _The lighting time is set based on the vehicle speed at the time of _V. Incidentally, the lighting time setting unit 16 may set the lighting time based on the vehicle speed at any timing when the bank angle is in the range of less than the threshold theta ₁ with the reference value theta _V or more.

FIG. 6 is a diagram for explaining the relationship between the vehicle speed and the lighting time. FIG. 6 shows a graph in which the horizontal axis is associated with time and the vertical axis is associated with the lighting rate. As shown, the lighting time set by the lighting time setting unit 16 is the time required until the lighting rate which was 0% at a certain time t ₁ reaches 100%. In the illustrated example, T ₅₀ , T ₇₀ , and T ₉₀ are lighting times corresponding to vehicle speeds of 50 km / h, 70 km / h, and 90 km / h, respectively, and the lighting time decreases as the vehicle speed increases. For example, bank angle becomes equal to or larger than the reference value theta _V at time t _V earlier than the time t _1, when the time detected vehicle speed is assumed to be 50 km / h, setting the lighting time T ₅₀ corresponding to the vehicle speed Is done. Then, when the bank angle at time t ₁ is the threshold theta ₁ or more, the time t ₁ the lighting rate over time corresponding to the lighting time T ₅₀ from the set to be from 0% to 100% auxiliary light source 22 is turned Be controlled. The other auxiliary light sources 23 and 24 are also controlled to be turned on in the same manner. In the illustrated example, the lighting rate is linearly increased from 0% to 100%. However, the increasing method is not limited to this and may be curvilinear.

  FIG. 7 is a flowchart illustrating a processing procedure performed by the control unit. Hereinafter, the processing procedure will be described in detail with reference to the flowchart. It should be noted that the processes shown in the figure can be executed in a mutually reversed order as long as no contradiction or inconsistency occurs in the results, and such an aspect is not excluded.

  Based on the bank angle of the vehicle body, the traveling state determination unit 15 determines whether the vehicle is in a traveling state when entering the curve (step S10). Specifically, when the absolute value of the bank angle of the vehicle body is greater than or equal to the reference value θv, it is determined that the vehicle is entering the curve. If it is not the traveling state at the time of entering the curve (step S10; NO), the determination in step S10 is repeated.

  When the vehicle is in the traveling state when entering the curve (step S10; YES), the lighting time setting unit 16 sets the lighting time based on the vehicle speed detected by the vehicle speed detection unit 12 (step S11).

Next, the lighting control unit 17 determines whether the vehicle bank angle is the threshold value theta ₁ or more (step S12). When the bank angle is equal to or larger than the threshold θ ₁ (step S12; YES), the lighting control unit 17 performs control to turn on the auxiliary light source 22 (step S13).

Next, the lighting control unit 17 determines whether the vehicle bank angle is the threshold value theta ₂ or more (step S14). If the bank angle is the threshold value theta ₂ or more (step S14; YES), the lighting control section 17 performs control of lighting the auxiliary light source 23 (step S15).

Next, the lighting control unit 17 determines whether the vehicle bank angle is the threshold value theta ₃ or more (step S16). If the bank angle is the threshold value theta ₃ or more (step S16; YES), the lighting control section 17 performs control of lighting the auxiliary light source 24 (step S17). Thereafter, the process returns to step S10 described above.

On the other hand, if the vehicle body bank angle threshold theta ₁ is less than (Step S12; NO), the lighting control section 17 performs control for turning off the auxiliary light source 22 (step S18). In addition, when the auxiliary light source 22 is originally turned off, the light-off state is maintained. Similarly, when the bank angle of the vehicle body is smaller than the threshold θ ₂ (step S14; NO), the lighting control unit 17 performs control to turn off the auxiliary light source 23 (step S19). In addition, when the auxiliary light source 23 is originally turned off, the light-off state is maintained. Similarly, if the vehicle body bank angle threshold theta ₃ is smaller than (Step S16; NO), the lighting control section 17 performs control for turning off the auxiliary light source 23 (step S20). In addition, when the auxiliary light source 23 is originally turned off, the light-off state is maintained. After the processing of each step is performed, the process returns to step S10 described above.

  According to the embodiment as described above, it is possible to reduce the lighting delay when the light source is turned on according to the bank angle of the vehicle. That is, generally, as the vehicle speed increases, the bank angle tends to change more rapidly. In this embodiment, when the bank angle is larger than the reference value, that is, when it is estimated that the vehicle is traveling when entering the curve. Since lighting control is performed so that the light source is lighted faster as the vehicle speed is higher, a lighting delay can be reduced.

(Second Embodiment)
FIG. 8 is a block diagram illustrating a configuration of the vehicular lamp according to the second embodiment. The configuration of this vehicular lamp is generally the same as that of the vehicular lamp of the first embodiment, and further includes an acceleration detection unit 18, and accordingly, the lighting time setting unit 16 also uses the output of the acceleration detection unit 18. The difference is that the lighting time is set. Hereinafter, the description of the configuration common to both will be omitted, and the configuration that is different will be described in detail.

  The acceleration detection unit 18 detects, for example, acceleration in each of three axes XYZ orthogonal to each other. The acceleration detection unit 18 according to the present embodiment is installed in such a manner that the X axis is associated with the vehicle longitudinal direction, the Y axis is associated with the vehicle lateral direction (vehicle width direction), and the Z axis is associated with the vehicle vertical direction (vehicle height direction). Shall. If the vehicle is provided with an acceleration detection unit for other purposes, the acceleration detection unit 18 may be omitted by using the output.

  The lighting time setting unit 16 uses the data stored in the memory 14 based on the vehicle speed detected by the vehicle speed detection unit 12 and the acceleration detected by the acceleration detection unit 18. The lighting time when lighting 23 and 24 is set. The lighting time setting unit 16 of the present embodiment sets the lighting time using the longitudinal acceleration (X-axis acceleration) of the vehicle detected by the acceleration detection unit 18.

FIG. 9 is a diagram for explaining the relationship between the vehicle speed and acceleration and the lighting time. FIG. 9 shows a graph in which the horizontal axis is associated with time and the vertical axis is associated with the lighting rate. For convenience of illustration, the scale of the horizontal axis is different from that of FIG. As shown in FIG. 9, the lighting time set by the lighting time setting unit 16 is the time required until the lighting rate which was 0% at a certain time t ₁ reaches 100%. Also in the second embodiment, the lighting time is set so that the lighting time decreases as the vehicle speed increases (see FIG. 6 above). Furthermore, in the second embodiment, in accordance with the longitudinal acceleration of the vehicle, when the acceleration is a negative value (when the vehicle is in an accelerating state), the larger the absolute value (the smaller the value). When the lighting time is shortened and the acceleration is a positive value (when the vehicle is in a decelerating state), the lighting time set so that the lighting time becomes longer as the absolute value becomes larger is used. In other words, it can be said that the value is increased or decreased (corrected) by a predetermined amount according to the acceleration with reference to the lighting time determined according to the vehicle speed. In this embodiment, the longitudinal acceleration of the vehicle is detected as a negative value when the vehicle is accelerating in the traveling direction, and is detected as a positive value when the vehicle is decelerating in the traveling direction. And

In FIG. 9, the lighting time in the case where the vehicle speed is 70 km / h is illustrated. For example, while the time lit acceleration is set when 0 is T _70, a short illumination time is set than the T ₇₀ when the acceleration is a negative value, the acceleration is a positive value long lighting time is set than the T ₇₀ in the case where. In this embodiment, when the acceleration is a negative value, the lighting time is 3 of T _70a , T _70b , T _70c (T _70a <T _70b <T _70c ) according to the magnitude (that is, the degree of acceleration). It is set by selecting one. Similarly, when the acceleration is a positive value, there are three lighting times of T _70d , T _70e , T _70f (T _70d <T _70e <T _70f ) according to the magnitude of acceleration (that is, the degree of acceleration). Select from and set.

FIG. 10 is a diagram for explaining data for setting the lighting time stored in the memory. As shown in the figure, the memory 14 stores a data table representing the vehicle speed and acceleration of the vehicle, and the lighting time corresponding to each vehicle speed and each acceleration. For example, when the vehicle speed is 50 km / h and the acceleration is 0, the lighting time setting unit 16 reads the corresponding lighting time T ₅₀ (ms) from the memory 14 and sets the lighting time based on the read time T ₅₀ (ms). . When the vehicle speed is 50 km / h and the acceleration is a negative value, the lighting time setting unit 16 selects one of T _50a , T _50b , and T _50c according to the magnitude of the acceleration. Are read out from the memory 14 and the lighting time is set on the basis thereof. The acceleration in this case is, for example, a small -0.7m / ^{s 2} or more ranges from 0 "large", a small -1.4m / ^{s 2} or more ranges from -0.7m / ^{s 2} "medium" The fixed range is set so that the range smaller than −1.4 m / s ^{2 is} called “small”. Then, the lighting time setting unit 16 selects a lighting time in a range corresponding to the acceleration detected by the acceleration detection unit 18. The same applies to the case where the acceleration is a positive value, and the lighting time setting unit 16 selects any one of T _50d , T _50e , and T _50f according to the magnitude of the acceleration and reads it out from the memory 14. To set the lighting time.

  In addition, what is necessary is just to set to the suitable value calculated | required by experiment etc. about the specific value of lighting time. In order to make the explanation easy to understand, the vehicle speed is set in increments of 5 km / h. However, the present invention is not limited to this. The vehicle speed increment is arbitrarily set and the corresponding lighting time is stored. Can be kept. Similarly, the step size of acceleration is not limited to the three stages shown as an example, and can be arbitrarily set and the corresponding lighting time can be stored.

  FIG. 11 is a flowchart illustrating a processing procedure performed by the control unit. Hereinafter, the processing procedure will be described in detail with reference to the flowchart. It should be noted that the processes shown in the figure can be executed in a mutually reversed order as long as no contradiction or inconsistency occurs in the results, and such an aspect is not excluded. Note that the processing procedure is generally the same as in the case of the first embodiment described above (see FIG. 7), and only the processing in step S11a for setting the lighting time is different. The differences will be mainly described.

  In step S10, when the vehicle is in a traveling state when entering a curve (step S10; YES), the lighting time setting unit 16 is based on the vehicle speed detected by the vehicle speed detection unit 12 and the acceleration detected by the acceleration detection unit 18. A lighting time is set (step S11a).

  Thereafter, the lighting control unit 17 performs control to appropriately turn on the auxiliary light sources 22, 23, and 24 according to the bank angle of the vehicle body (steps S12 to S17). At this time, the lighting time set in step S11a is used. On the other hand, the lighting control unit 17 performs control to appropriately turn off the auxiliary light sources 22, 23, and 24 according to the bank angle of the vehicle body (steps S18 to S20). After the processing of each step is performed, the process returns to step S10 described above.

  According to the embodiment as described above, it is possible to reduce the lighting delay when the light source is turned on according to the bank angle of the vehicle. That is, generally, as the vehicle speed increases, the bank angle tends to change more rapidly. In this embodiment, when the bank angle is larger than the reference value, that is, when it is estimated that the vehicle is traveling when entering the curve. Since lighting control is performed so that the light source is lighted faster as the vehicle speed is higher, a lighting delay can be reduced. Furthermore, in this embodiment, since the lighting time is increased or decreased in consideration of the acceleration when entering the curve, it is possible to correct the lighting timing to be more appropriate.

  Note that the present invention is not limited to the contents of the above-described embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, in the above-described embodiment, a motorcycle is cited as an example of a vehicle to which the present invention can be applied, but the vehicle is not limited to this.

  In each of the above-described embodiments, the lighting time corresponding to the vehicle speed and acceleration is set by referring to the data table stored in advance in the memory 14, but the lighting time setting method is not limited to this. Various setting methods are conceivable. For example, the relationship between the vehicle speed or acceleration and the corresponding lighting time may be expressed by a calculation formula, and the lighting time corresponding to the vehicle speed may be set using the calculation formula.

  Further, in each of the above-described embodiments, a case where a lamp unit having three auxiliary light sources is used and each auxiliary light source is turned on at different timings according to the bank angle is exemplified. However, if at least one auxiliary light source exists Good. Further, the three auxiliary light sources may be turned on at the same timing. Furthermore, in the above-described embodiment, the auxiliary light source has been described as an example of the light source. However, the scope of the present invention is not limited to this, and any light source can be used as long as it is mounted on a vehicle. Also good.

  In the second embodiment, the longitudinal acceleration of the vehicle is considered as the acceleration used for setting the lighting time. However, the acceleration in the vehicle lateral direction and the vehicle vertical direction may be further used. For example, the lighting time may be set using an acceleration value obtained by combining the longitudinal acceleration of the vehicle and the lateral acceleration of the vehicle. That is, any acceleration value having a correlation with the longitudinal acceleration of the vehicle may be used. Further, the acceleration used for setting the lighting time is not limited to the acceleration obtained by the acceleration detection unit 18, and may be obtained, for example, by performing a differentiation process using the vehicle speed detected by the vehicle speed detection unit 12. In this case, the vehicle speed sensor and the control unit 13 function as an acceleration detection unit.

11: Bank angle detection unit 12: Vehicle speed detection unit 13: Control unit 14: Memory 15: Traveling state determination unit 16: Lighting time setting unit 17: Lighting control unit 18: Acceleration detection unit 19: Lamp unit 20: Main light source 21: Auxiliary light source unit 22, 23, 24: auxiliary light source

Claims (9)

An apparatus for controlling the lighting state of a light source installed in a vehicle,
When the tilt angle of the vehicle body in the vehicle width direction of the vehicle is larger than a reference value, the time required to turn on the light source is set so as to be shorter as the vehicle speed of the vehicle is larger, and the set time is taken. Turning on the light source;
Light source lighting control device. When the vehicle body inclination angle is larger than a reference value and the vehicle body inclination angle is larger than a threshold set to a value larger than the reference value, the light source is turned on;
The lighting control device for a light source according to claim 1. The time required to turn on the light source is set according to the vehicle speed when the tilt angle of the vehicle body is within a range larger than the reference value and smaller than the threshold value.
The lighting control device for a light source according to claim 2. When the vehicle is in an accelerating state, the time required to turn on the light source is set to a first value obtained by reducing a value set according to the vehicle speed of the vehicle by a predetermined amount, and the vehicle decelerates. In the case of the state to be set, a value set according to the vehicle speed of the vehicle is set to a second value increased by a predetermined amount,
The lighting control device for a light source according to any one of claims 1 to 3. Determining whether the vehicle is in the accelerating state or the decelerating state based on an acceleration having a correlation with the longitudinal acceleration of the vehicle;
The lighting control device for a light source according to claim 4. As the degree of acceleration of the vehicle is larger, the first value is set to a smaller value,
As the degree of deceleration of the vehicle is larger, the second value is set to a larger value.
The lighting control device for the light source according to claim 4 or 5. An apparatus for controlling the lighting state of a light source installed in a vehicle,
A determination unit for determining whether an inclination angle of the vehicle body of the vehicle is larger than a reference value;
When the determination unit determines that the inclination angle of the vehicle body is larger than the reference value, the time required to turn on the light source is shortened as the vehicle speed of the vehicle increases according to the vehicle speed of the vehicle. A setting part to be set to
A lighting control unit that turns on the light source over the time set by the setting unit;
A lighting control device for a light source.   A vehicle lamp comprising the lighting control device according to claim 1 and a light source controlled by the lighting control device. A method for controlling a lighting state of a light source installed in a vehicle,
When the tilt angle of the vehicle body in the vehicle width direction of the vehicle is larger than a reference value, the time required to turn on the light source is set so as to be shorter as the vehicle speed of the vehicle is larger, and the set time is taken. Turning on the light source;
Light source lighting control method.

Images