JP7633028B2 - Vehicle drawing device and vehicle drawing method - Google Patents

Description

The present invention relates to a vehicle drawing device and a vehicle drawing method.

JP 2016-193689 A (Patent Document 1) describes a vehicle drawing device that starts drawing a marker on the road surface in the vehicle's travel direction when the turn signal lamp is on, and ends drawing the marker when the turn signal lamp is off. The drawn marker is an arrow, figure, or curve that corresponds to the travel direction indicated by the turn signal lamp. However, although the shape and position of the marker drawn by this vehicle drawing device are easy to grasp in the vicinity, it is difficult to recognize the shape and position when observed from, for example, a relatively distant position to the side, and it is thought that there are cases in which the originally intended information transmission cannot be performed well (for example, the drawn shape appears crushed and it is unclear what the shape is, etc.).

JP 2016-193689 A

One of the objectives of a specific embodiment of the present invention is to improve the transmission of information using markers drawn on the road surface.

According to one aspect of the present invention, there is provided a vehicle rendering method ,
A method for irradiating light using a vehicle drawing device including a light irradiation device mounted on a vehicle and capable of drawing a mark by irradiating light in each of two areas spaced apart in a vehicle width direction of the vehicle on a road surface in a traveling direction of the vehicle, and a controller connected to the light irradiation device and controlling an operation of the light irradiation device,
the controller controls so that, when a turn signal switch of the vehicle is turned on, the mark is drawn in a first form in a first region of the two regions that is located on a side corresponding to the turn signal switch, and the mark is drawn in a second form different from the first form in a second region of the two regions that is not the first region,
The first and second forms have any one of the following relationships (a) to (d):
(a) the first form is larger than the second form in at least one of hue, illuminance, saturation, brightness, area, and motion;
(b) the first form is a form in which the mark is drawn in a first hue, and the second form is a form in which the mark is drawn in a second hue different from the first hue;
(c) the first form is a form in which the mark is drawn so as to flash, and the second form is a form in which the mark is drawn continuously;
(d) the first form is a form in which the mark is drawn such that a first hue and a second hue different from the first hue appear alternately, and the second form is a form in which the mark is drawn in the second hue;
The marks are drawn so as to satisfy the following relationship:
A drawing method for vehicles.
Another aspect of the present invention is a vehicle rendering device configured to be able to execute the above method.

The above configuration allows for better information transmission using markers drawn on the road surface.

FIG. 1 is a diagram showing a configuration of a vehicle drawing device according to an embodiment. FIG. 2 is a schematic front view showing an example of the configuration of each road surface drawing lamp unit. 3A to 3C are diagrams for explaining a method of drawing a mark by the vehicle drawing device of this embodiment. FIG. 4 is a flowchart showing an operation procedure of the controller of the vehicle drawing device according to an embodiment. FIG. 5 is a diagram for explaining a preferred embodiment of the drawing form of each mark and the mutual distance between the marks. FIG. 6 is a diagram showing the positional relationship between each mark and the viewpoint when each mark is viewed from the side. FIG. 7 is a diagram showing a method of drawing a mark according to another embodiment. FIG. 8 is a diagram showing a method for drawing a mark according to another embodiment.

Figure 1 is a diagram showing the configuration of a vehicle drawing device according to one embodiment. The vehicle drawing device 100 shown in the figure is configured to include a controller 1, a map data storage unit 2, a GPS sensor 3, and a pair of road surface drawing lamp units 4L and 4R. The controller 1 is connected to each of the map data storage unit 2, the GPS sensor 3, and the pair of road surface drawing lamp units 4L and 4R. In this specification, the road surface drawing lamp unit 4L and the road surface drawing lamp unit 4R correspond to the "light irradiation device."

The vehicle drawing device 100 of this embodiment is mounted on a vehicle and draws a mark by irradiating light onto the road surface in the traveling direction of the vehicle (for example, forward). The "mark" here refers to something that is formed on the road surface by irradiating light and is visible and distinguishable from the surrounding road surface, and may be, for example, a figure such as a square, circle, or arrow, or may be various letters or symbols.

The controller 1 controls the light irradiation operation of each of the road surface drawing lamp units 4L, 4R. This controller 1 can be configured using a computer system equipped with, for example, a processor (CPU: Central Processing Unit), a storage device such as a ROM (Read Only Memory), a RAM (Random Access Memory), a flash memory, and an input/output interface. In this embodiment, the controller 1 is capable of performing a predetermined function by the CPU reading and executing a program previously stored in the storage device (or ROM). The controller 1 includes a drawing content setting unit 11 and a control signal generating unit 12 as functional blocks realized by executing the program.

The controller 1 is connected to a turn signal switch 101 that is operated by the driver to activate a turn signal unit (directional indicator) 102 when turning right or left with the vehicle. The turn signal switch 101 is installed in a position near the driver's seat of the vehicle where it can be operated by the driver. The turn signal unit 102 is connected to the turn signal switch 101 and includes lamps installed in predetermined positions on the left and right sides of the front of the vehicle, and either the left or right lamp (or both) flashes depending on the operation status of the turn signal switch 101.

The map data storage unit 2 stores map data including information about roads (location, road type, traffic division, traffic rules, etc.) and information about various buildings and land (location, type, etc.) in a data format that can be read by the controller 1. The map data storage unit 2 can be configured using a non-volatile storage medium such as a hard disk drive or flash memory.

The GPS sensor 3 is a sensor for detecting the position using the Global Positioning System, and is installed in the vehicle to detect its current position.

If the vehicle is equipped with another system (such as a car navigation system) that includes components equivalent to the map data storage unit 2 and the GPS sensor 3, the functions of the map data storage unit 2 and the GPS sensor 3 may be replaced by that system.

The drawing content setting unit 11 sets the state of the light emitted by each road drawing lamp unit 4L, 4R according to the operation status of the turn signal switch 101, the map data read from the map data storage unit 2, and the road conditions determined based on the current position of the vehicle detected by the GPS sensor 3.

The control signal generating unit 12 generates a control signal for causing each of the road surface drawing lamp units 4L, 4R to form irradiation light according to the irradiation light state set by the irradiation state setting unit 11, and supplies the control signal to each of the road surface drawing lamp units 4L, 4R.

A pair of road marking lamp units 4L, 4R are mounted at predetermined positions on the left and right sides of the front of the vehicle, and operate in response to control signals provided by the controller 1 to draw marks on the road surface in front of the vehicle by irradiating light.

Various known configurations can be adopted for each of the road surface drawing lamp units 4L and 4R. For example, a lamp unit configured by combining a light source bulb with a reflector or a shielding plate may be used. A lamp unit may be used in which light emitting elements such as LEDs (Light Emitting Diodes) are arranged in one or two directions, and the lighting state of each light emitting element can be individually controlled. A lamp unit may be used that includes a light source and a liquid crystal element, and that can individually control the light transmission state of each pixel of the liquid crystal element. A lamp unit may be used that includes a light emitting element such as a laser diode and a scanning element such as a mirror device that scans the light emitted from the light emitting element, and that can control the timing of turning on and off the light emitting element and the scanning timing by the scanning element. In either configuration, it is preferable that light irradiation can be performed with two or more different hues. In this case, two or more types of lamp units with different light emission colors such as light source bulbs and light emitting elements may be used by switching between them, or light emitting elements that can switch between two or more hues may be used. When using a liquid crystal element, possible configurations include preparing two types of light sources that input light to the liquid crystal element, preparing a light source that can switch hues, or preparing a liquid crystal element that can switch the hue of the transmitted light.

Figure 2 is a schematic front view showing an example of the configuration of each road surface drawing lamp unit. Each of the road surface drawing lamp units 4L and 4R in the example configuration shown in Figure 2 has two lamps 40 and 41, where the lamp 40 can form a white mark (second hue) and the lamp 41 can form an amber mark (first hue). Each lamp 40 can be configured to include, for example, a white light source, a shielding plate corresponding to the shape of the mark and arranged in front of the light source, a condensing lens arranged in front of the shielding plate, and a transparent housing that houses the light source, the shielding plate, and the condensing lens. Each lamp 41 can be configured to include, for example, a white light source, a shielding plate corresponding to the shape of the mark and arranged in front of the light source, a condensing lens arranged in front of the shielding plate, and a housing that houses the light source, the shielding plate, and the condensing lens and is colored amber.

Figures 3(A) to 3(C) are diagrams for explaining the method of drawing a mark by the vehicle drawing device of this embodiment. Each figure shows a schematic plan view of the mark drawing state when the vehicle 200 approaches an intersection.

When the vehicle 200 approaches an intersection, the lamps 40 of the road marking lamp units 4L and 4R are turned on as shown in FIG. 3A, and white marks 201L and 201R are drawn on the road surface ahead of the vehicle 200. In detail, the mark 201L is drawn on the left side of the road surface by the light irradiation from the lamp 40 of the road marking lamp unit 4L, and the mark 201R is drawn on the right side of the road surface by the light irradiation from the lamp 40 of the road marking lamp unit 4R. These pair of marks 201L and 201R function as position marks to inform surrounding pedestrians and drivers of other vehicles of the presence of the vehicle and to inform the approximate vehicle width. In other words, the drawing mode shown in FIG. 3A is an example in which marks are drawn in the same mode (second mode) in each of the two areas before the vehicle 200 changes course.

When the turn signal switch 101 of the vehicle 200 is operated, the turn signal unit 102 starts to flash (not shown), and in conjunction with this, as shown in FIG. 3(B), an amber mark 202L is drawn flashing in place of the mark 201L in the left side area, which is the area on the road surface corresponding to the lane change direction of the vehicle 200 (left direction in the illustrated example). At this time, the mark 201R is continuously drawn in the right side area on the road surface. Although not shown, if the lane change direction is to the right, an amber mark is drawn flashing in place of the mark 201R, and the mark 201L is continuously drawn.

In addition, during the off period of the mark 202L that is drawn and flashing, the mark 201L is drawn as shown in FIG. 3(C). Specifically, the mark 201L may be continuously drawn and the mark 202L may be drawn and flashed by overwriting it, or the on and off periods of the marks 201L and 202L may be provided complementary to each other. As a result, while the turn signal switch 101 is in an operating state corresponding to a left turn, a state in which the state shown in FIG. 3(B) and the state shown in FIG. 3(C) are repeated, that is, a state in which the mark 202L flashes in conjunction with the flashing of the turn signal unit 102 is maintained.

In other words, the drawing modes shown in Figures 3(B) and 3(C) are examples in which marks are drawn in different modes (first and second modes) in the region corresponding to the direction of lane change and the region opposite the region when the vehicle 200 changes lane. Specifically, this is an example in which an amber mark is drawn to flash, and an example in which an amber mark and a white mark are drawn to appear alternately. It is also an example in which the lighting cycle of the amber mark and the lighting cycle when flashing are synchronized with the lighting cycle of the turn signal unit 102.

Figure 4 is a flowchart showing the operation procedure of one embodiment of the controller of the vehicle drawing device. Here, the explanation is based on the operations exemplified in Figures 3(A) to 3(C) above. Note that the operation procedure shown in the flowchart here is only an example, and the processing order of each step may be changed as long as no inconsistency occurs in the operations, and other processes not shown may be added.

Based on the map data read from the map data storage unit 2 and the current position of the vehicle detected by the GPS sensor 3, if the current position of the vehicle is near an intersection (step S11; YES), the drawing content setting unit 11 of the controller 1 sets the drawing content to draw marks 201L, 201R on the road surface. Based on this drawing content setting, the control signal generating unit 12 generates a control signal and outputs the control signal to each of the road surface drawing lamp units 4L, 4R, and the road surface drawing lamp units 4L, 4R draw marks 201L, 201R as position marks in the left and right areas on the road surface (step S12). As shown in FIG. 3(A), white marks 201L, 201R are drawn on the road surface in front of the vehicle 200.

Note that in step S11, "the vehicle's current position is near an intersection" can be defined as a state in which the distance between the intersection position identified by the map data and the vehicle's current position is less than a predetermined distance (e.g., less than 10 m).

As long as the blinker switch 101 is not on (indicating a right or left turn) (step S13; NO), the drawing content setting unit 11 returns to step S11 and executes subsequent control. For example, if the blinker switch is not on for some reason and the vehicle's current position is no longer near an intersection (step S11; NO), the drawing content is set to turn off the marks on both sides. Based on this drawing content setting, the control signal generating unit 12 generates a control signal and outputs the control signal to each of the road surface drawing lamp units 4L, 4R, causing each of the road surface drawing lamp units 4L, 4R to stop drawing the marks 201L, 201R. In other words, the marks on both sides are turned off (step S16). Then, the process returns to step S11.

When the turn signal switch 101 is turned on (step S13; YES), the drawing content setting unit 11 sets the drawing content to change the drawing mode of the mark on the side corresponding to the lane change direction and draw it on the road surface. Based on this drawing content setting, the control signal generating unit 12 generates a control signal and outputs the control signal to each road surface drawing lamp unit 4L, 4R, and the mark on the road surface of each road surface drawing lamp unit 4L, 4R corresponding to the lane change direction is drawn so that it flashes in amber (step S14). Note that the other mark is kept continuously lit in white. For example, when the vehicle 200 turns left, as shown in Figures 3(B) and 3(C), the drawing mode of the mark on the left side corresponding to the lane change direction on the road surface in front of the vehicle 200 is drawn in a manner that alternates between the white mark 201L and the amber mark 202L, and the right mark 201R is kept continuously lit.

The drawing content setting unit 11 continues the control of step S14 until the blinker switch 101 is turned off (a state in which neither a right nor left turn is indicated) (step S15; NO). When the blinker switch 101 is turned off (step S15; YES), the drawing content setting unit 11 returns to step S11. In this case, if the current position of the vehicle is still near the intersection, the drawing of the marks on both sides continues (steps S11 to S13). On the other hand, if the current position of the vehicle is no longer immediately before the intersection, the marks on both sides are turned off (step S16), and then the process returns to step S11.

Figure 5 is a diagram for explaining the preferred form of drawing each mark and the mutual distance. Here, the state of turning left, similar to that of Figure 3(B) above, is shown. Next, the preferred value of the mutual distance between the first hue mark (202L in the illustrated example) and the second hue mark (201R in the illustrated example), specifically the mutual distance L1 between the ends facing each other in a plan view, will be explained.

Figure 6 is a diagram showing the positional relationship between each mark and the viewpoint when viewing each of these marks from the side. The illustrated viewpoint P is the viewpoint of a driver of another vehicle or a pedestrian on a road that intersects with the road on which the vehicle 200 is traveling at an intersection, for example. The distance from viewpoint P to the relatively close mark 201R is L2, and the distance between marks 201R and 202L is L1. The inventor's verification has revealed that the minimum viewing angle at which the area between the two marks 201R and 202L can be viewed from viewpoint P is 0.05° (3 minutes).

Consider the magnitude of the mutual distance L1 required to achieve this visual angle. For example, assume that the height (distance from the road surface) of the viewpoint P of the rider riding the motorcycle is 1.5 m, and further assume that the length required for distance L2 is 26 m based on the braking distance of the motorcycle, etc. In this case, the mutual distance L1 required to obtain a visual angle of 0.05° is 0.41 m. In other words, if L1 is set to 0.41 m or more, the area between the two marks 201R, 202L will be visible from the viewpoint P of the motorcycle.

Similarly, let us assume that the height (distance from the road surface) of the viewpoint P of a driver in a typical sedan-type four-wheeled vehicle is 1.25 m, and further assume that the required length for distance L2 is 50 m based on the braking distance of the four-wheeled vehicle. In this case, the mutual distance L1 required to obtain a visual angle of 0.05° is 1.84 m. In other words, if L1 is set to 1.84 m or more, the area between the two marks 201R, 202L can be seen from the viewpoint P of a sedan-type four-wheeled vehicle.

Note that by making the area between the two marks 201R, 202L visible, each mark can be more easily seen independently even when observed from a relatively distant position to the side, and the visibility of each mark can be further improved; however, making the area between them visible in this way is a preferable condition and is not essential. It is sufficient if the area between the marks is not necessarily clear, as long as the two marks can be seen as different.

As shown in FIG. 5, the mark 202L on the left side corresponding to the direction of the lane change is a different hue from the mark 201R on the opposite right side. Specifically, the mark 202L is amber, and the mark 201R is white. In this embodiment, the marks 202L and 201R have different areas. Specifically, the mark 202L on the left side corresponding to the direction of the lane change is set to have a relatively larger area than the mark 201R on the opposite right side. Another difference is that the mark 202L on the left side corresponding to the direction of the lane change flashes, while the mark 201R on the opposite right side is continuously lit.

The shape and illuminance of the mark corresponding to the lane change direction and the mark opposite to it may be different. For example, in the illustrated example, both marks 201R and 202L are square in plan view, but the mark 202L corresponding to the lane change direction may be another shape (e.g., triangular, circular, rectangular, etc.). Also, for example, the mark 202L corresponding to the lane change direction may have a higher illuminance than the mark 201R on the opposite side. Furthermore, either the mark 202L corresponding to the lane change direction or the mark 201R on the opposite side may have movement. Furthermore, as a difference between the marks, a difference in physical quantity such as saturation, brightness, or illuminance may be used, or one of the marks may have movement. The movement here refers to, for example, a mode in which the mark moves in one or two directions within a certain range on the road surface. For example, the mark 202L corresponding to the lane change direction may be drawn so that the light points move in the vehicle width direction (sequential lighting), and the other mark 201R may be drawn so that there is no movement.

Furthermore, as shown in FIG. 7, the mark 202L corresponding to the lane change direction may be drawn in a gradation state in which the illuminance is relatively higher toward the outside in the vehicle width direction and the illuminance is lower toward the inside. This makes it possible to increase the contrast between the mark 201R and the mark 202L when viewed from the side of the vehicle 200, further improving the visibility of each mark.

Also, as shown in FIG. 8, when the road on which the vehicle 200 is traveling and the road to be entered intersect at an acute angle, the drawing position of the first hue mark (mark 202L in the illustrated example) may be changed to a position farther away from the vehicle according to the angle θ at which the two roads intersect. Specifically, in the illustrated example, the drawing position of mark 202L by the road surface drawing lamp unit 4L, which is farther from the road to be entered, is shifted further forward. If the distance by which mark 202L is shifted at this time is L3 and the vehicle width of the vehicle 200 is d, then L3 = d/tan θ can be expressed. Since the vehicle width d is a known value and the angle θ is obtained based on the map data, the distance L3 can be calculated according to this formula. In this way, when the drawing position of the mark is set variably, for example, a mechanism for freely changing the optical axis up and down may be provided for the road surface drawing lamp units 4L and 4R shown in FIG. 2 described above. Alternatively, the mark drawing position can be variably set for the various other road marking lamp units mentioned above.

According to the above-described embodiment, the communication of information by the markers drawn on the road surface can be improved. Furthermore, since the marks corresponding to the direction of lane change are drawn alternately in two different hues, one of the marks is continuously drawn on the road surface as a whole, making the presence of the mark easier to sense compared to blinking in one hue. Furthermore, since both marks are drawn in one hue before the lane change and the drawing mode of one of the marks is changed from that state, the change before and after the lane change becomes clearer and the mark corresponding to the direction of the lane change is more emphasized.

The present invention is not limited to the contents of the above-mentioned embodiment, and can be implemented in various modifications within the scope of the present invention. For example, in the above-mentioned embodiment, the difference between the marks is a combination of three elements, namely, hue, area, and whether or not the mark blinks. However, the difference between the marks may be at least one of the elements listed above, or any combination of two or more elements may be used. Regarding the hue, the above-mentioned white and amber colors are an example of a suitable combination, but are not limited to this, and any combination of distinguishable colors may be used. In the above-mentioned embodiment, a pair of road surface drawing units is shown as an example of a light irradiation device, but the configuration of the light irradiation device is not limited to this, and may be, for example, integrally configured. In the above-mentioned embodiment, the blinking period of the mark (the lighting period of the amber mark when it appears alternately) is synchronized with the lighting period of the turn signal unit 102, but the two do not necessarily need to be synchronized. In the above-mentioned embodiment, the mark is drawn on the road surface in front of the vehicle, but when the vehicle is traveling backward (for example, when backing up from a parking lot onto a road), the mark may be drawn on the road surface behind the vehicle. In this case, the road marking lamp unit may be installed at the rear or top of the vehicle.

1: Controller, 2: Map data storage unit, 3: GPS sensor, 4L, 4R: Road surface drawing lamp unit, 100: Vehicle drawing device, 101: Turn signal switch, 102: Turn signal unit, 200: Vehicle, 201L, 201R, 202L: Mark

Claims (15)

a light irradiation device mounted on a vehicle and capable of drawing a mark by irradiating light onto each of two areas spaced apart in a vehicle width direction of the vehicle on a road surface in a traveling direction of the vehicle;
A controller connected to the light irradiation device and controlling an operation of the light irradiation device;
Including,
the controller controls the light irradiation device so that the mark is drawn in a first form in a first region of the two regions that is disposed on a side corresponding to a lane change direction of the vehicle, and the mark is drawn in a second form different from the first form in a second region of the two regions that is not the first region,
The first form has at least one of hue, illuminance, saturation, brightness, area, and motion greater than the second form;
Vehicle drawing device. a light irradiation device mounted on a vehicle and capable of drawing a mark by irradiating light onto each of two areas spaced apart in a vehicle width direction of the vehicle on a road surface in a traveling direction of the vehicle;
A controller connected to the light irradiation device and controlling an operation of the light irradiation device;
Including,
the controller controls the light irradiation device so that the mark is drawn in a first form in a first region of the two regions that is disposed on a side corresponding to a lane change direction of the vehicle, and the mark is drawn in a second form different from the first form in a second region of the two regions that is not the first region,
The first form is a form in which the mark is drawn in a first color, and the second form is a form in which the mark is drawn in a second color different from the first color.
Vehicle drawing device. The first form is a form in which the mark is drawn in a first color, and the second form is a form in which the mark is drawn in a second color different from the first color.
The vehicle drawing device according to claim 1 . a light irradiation device mounted on a vehicle and capable of drawing a mark by irradiating light onto each of two areas spaced apart in a vehicle width direction of the vehicle on a road surface in a traveling direction of the vehicle;
A controller connected to the light irradiation device and controlling an operation of the light irradiation device;
Including,
the controller controls the light irradiation device so that the mark is drawn in a first form in a first region of the two regions that is disposed on a side corresponding to a lane change direction of the vehicle, and the mark is drawn in a second form different from the first form in a second region of the two regions that is not the first region,
The first form is a form in which the mark is drawn so as to flash, and the second form is a form in which the mark is drawn continuously.
Vehicle drawing device. The first form is a form in which the mark is drawn so as to flash, and the second form is a form in which the mark is drawn continuously.
The vehicle drawing device according to any one of claims 1 to 3. A lighting cycle of the blinking mark in the first mode is synchronized with a lighting cycle of a turn signal of the vehicle.
6. The vehicle drawing device according to claim 4 or 5. a light irradiation device mounted on a vehicle and capable of drawing a mark by irradiating light onto each of two areas spaced apart in a vehicle width direction of the vehicle on a road surface in a traveling direction of the vehicle;
A controller connected to the light irradiation device and controlling an operation of the light irradiation device;
Including,
the controller controls the light irradiation device so that the mark is drawn in a first form in a first region of the two regions that is disposed on a side corresponding to a lane change direction of the vehicle, and the mark is drawn in a second form different from the first form in a second region of the two regions that is not the first region,
The first form is a form in which the mark is drawn such that a first hue and a second hue different from the first hue appear alternately, and the second form is a form in which the mark is drawn in the second hue.
Vehicle drawing device. The first form is a form in which the mark is drawn such that a first hue and a second hue different from the first hue appear alternately, and the second form is a form in which the mark is drawn in the second hue.
The vehicle drawing device according to claim 1 . a lighting cycle of the second hue of the mark in the first form is synchronized with a lighting cycle of a turn signal of the vehicle;
9. The vehicle drawing device according to claim 7 or 8. the first hue is amber and the second hue is white;
9. The vehicle drawing device according to claim 2, 3, 7 or 8. a light irradiation device mounted on a vehicle and capable of drawing a mark by irradiating light onto each of two areas spaced apart in a vehicle width direction of the vehicle on a road surface in a traveling direction of the vehicle;
A controller connected to the light irradiation device and controlling an operation of the light irradiation device;
Including,
the controller controls the light irradiation device so that the mark is drawn in a first form in a first region that is disposed on a side corresponding to a lane change direction of the vehicle out of the two regions, and the mark is drawn in a second form different from the first form in a second region that is not the first region out of the two regions; and
the controller controls the light irradiation device so that the mark is drawn in the second form in both the first area and the second area before the vehicle changes course.
Vehicle drawing device. the controller controls the light irradiation device so that the mark is drawn in the second form in both the first area and the second area before the vehicle changes course.
The vehicle drawing device according to any one of claims 1 to 10. A method for irradiating light using a vehicle drawing device including a light irradiation device mounted on a vehicle and capable of drawing a mark by irradiating light in each of two areas spaced apart in a vehicle width direction of the vehicle on a road surface in a traveling direction of the vehicle, and a controller connected to the light irradiation device and controlling an operation of the light irradiation device,
the controller controls so that, when a turn signal switch of the vehicle is turned on, the mark is drawn in a first form in a first region of the two regions that is located on a side corresponding to the turn signal switch, and the mark is drawn in a second form different from the first form in a second region of the two regions that is not the first region,
The first and second forms have any one of the following relationships (a) to (d):
(a) the first form is larger than the second form in at least one of hue, illuminance, saturation, brightness, area, and motion;
(b) the first form is a form in which the mark is drawn in a first hue, and the second form is a form in which the mark is drawn in a second hue different from the first hue;
(c) the first form is a form in which the mark is drawn so as to flash, and the second form is a form in which the mark is drawn continuously;
(d) the first form is a form in which the mark is drawn such that the first hue and the second hue different from the first hue appear alternately, and the second form is a form in which the mark is drawn in the second hue;
The marks are drawn so as to satisfy the following relationship:
Drawing instructions for vehicles. the controller controls the light emitting device to draw the mark in the second form in both of the two regions when the turn signal switch is not on and the current position of the vehicle is near an intersection, and controls the light emitting device to stop drawing the mark in the second form in both of the two regions when the turn signal switch is not on and the current position of the vehicle is no longer near an intersection while the mark is being drawn in the second form in both of the two regions.
The vehicle rendering method of claim 13. The light irradiation device includes a pair of lamp units,
The controller:
When a first road on which the vehicle is traveling and a second road to be entered intersect at an acute angle, the pair of lamp units are controlled so that a drawing position of the mark by a first lamp unit of the pair of lamp units which is farther from the second road is shifted forward from a drawing position of the mark by a second lamp unit which is closer to the second road, and the pair of lamp units are controlled so as to irradiate the mark.
The vehicle drawing device according to claim 13.

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