Road surface drawing device

Abstract

To provide a road surface drawing device that enables road surface drawing to be properly performed, without being influenced by opening and closing of a door mirror.SOLUTION: A road surface drawing device 1 is installed on a door mirror 101 of a vehicle 100 and performs road surface drawing by using drawing light L emitted toward a road surface T lateral to the vehicle. The road surface drawing device emits drawing light L to either of a first emission range E1 on the road surface T which is positioned closer to a front side of the vehicle than the door mirror 101 and a second emission range E2 on the road surface T which is positioned closer to a rear side of the vehicle than the door mirror 101, of the road surface T lateral to the vehicle, when the door mirror 101 is at an expansion position, emits drawing light L toward the second emission range E2, when the door mirror 101 is at a storage position, and forms a drawing pattern P, which is formed using drawing light L emitted to the first emission range E1 when the door mirror 101 is at the expansion position, using drawing light L emitted to the second emission range E2 when the door mirror 101 is at the storage position.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a road surface drawing device. [Background technology]

[0002] In recent years, illumination light has been obtained using laser light sources such as laser diodes (LDs) that can obtain high-brightness, high-power light. Laser light (drawing light) emitted from a laser light source is scanned to draw on road surfaces, etc.

[0003] For example, Patent Document 1 listed below discloses a lighting system that includes a lamp installed on the door mirror of a vehicle, and when the vehicle is stopped on the shoulder of the road, the lamp emits light in a manner that can be recognized by pedestrians on the side of the vehicle. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2021 / 149560 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, the above-mentioned door mirror is attached so as to be freely rotatable (openable and closable) between a deployed position where it is deployed outward from the side of the vehicle and a stored position where it is stored inward along the side of the vehicle.

[0006] Therefore, when the door mirror is rotated from the extended position to the stored position, part of the illumination range of the drawing light directed toward the road surface to the side of the vehicle overlaps with the vehicle, significantly impairing the visibility of the road surface drawing, such as making the drawing pattern formed by the drawing light unrecognizable.

[0007] The present invention has been proposed in consideration of the above-mentioned conventional circumstances, and has an object to provide a road surface drawing device that is capable of properly drawing the road surface without being affected by the opening and closing of the door mirrors. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention provides the following means. [1] A road surface drawing device that is installed on a door mirror of a vehicle and draws a road surface by irradiating a drawing light toward the road surface on the side of the vehicle, The door mirror is attached so as to be freely rotatable between a deployed position in which the door mirror is deployed outward from a side of the vehicle and a stored position in which the door mirror is stored inward along the side of the vehicle, When the door mirror is in the deployed position, a drawing light is irradiated toward either a first illumination range of the road surface located forward of the door mirror and a second illumination range of the road surface located rearward of the door mirror, among the road surfaces on the side of the vehicle; When the door mirror is in the stored position, a drawing light is irradiated toward the second irradiation range; A road surface drawing device characterized in that a drawing pattern formed by drawing light irradiated to the first illumination range when the door mirror is in the extended position is formed by drawing light irradiated to the second illumination range when the door mirror is in the stored position. [2] The road surface drawing device described in [1], characterized in that when the door mirror is rotated between the deployed position and the stored position, the road surface drawing is switched so that the orientation of the drawing pattern formed by the drawing light irradiated to the first illumination range coincides with the orientation of the drawing pattern formed by the drawing light irradiated to the second illumination range. [3] A light source unit that emits the drawing light; a scanning unit that forms a drawing pattern by scanning the drawing light emitted from the light source unit; a lens unit that projects the drawing light scanned by the scanning unit onto a road surface on the side of the vehicle, The road surface drawing device described in [1], wherein the lens unit projects drawing light toward multiple divided illumination areas of the road surface. Effect of the Invention

[0009] As described above, according to the present invention, a road surface drawing device is provided that is capable of properly drawing a road surface without being affected by opening and closing of the door mirrors. [Brief description of the drawings]

[0010] [Figure 1] 1 is a schematic diagram showing an example of road surface drawing performed by a road surface drawing device according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a block diagram showing a configuration of a road surface drawing device. [Diagram 3] 2 is a schematic diagram showing the configuration of a light source unit and a drawing unit provided in the road surface drawing device. FIG. [Figure 4] FIG. 2 is a schematic diagram showing a configuration of a light source unit. [Diagram 5] FIG. 2A is a schematic diagram showing the irradiation range of the drawing light when a conventional door mirror is in the extended position, and FIG. 2B is a schematic diagram showing the irradiation range of the drawing light when a conventional door mirror is in the stored position. [Figure 6] (A) Schematic diagram showing the first irradiation range of the drawing light when the door mirror of the present invention is in the deployed position, and (B) Schematic diagram showing the second irradiation range of the drawing light when the door mirror of the present invention is in the stored position. [Figure 7] FIG. 2 is a schematic diagram showing a configuration of a lens unit of the road surface drawing device. [Figure 8] 8A is a schematic diagram showing multiple divided irradiation ranges of the drawing light when the door mirror is in the extended position in the configuration shown in FIG. 7 , and FIG. 8B is a schematic diagram showing multiple divided irradiation ranges of the drawing light when the door mirror is in the stored position in the configuration shown in FIG. 7 . [Figure 9] 8A is a schematic diagram showing multiple divided irradiation ranges of the drawing light when the door mirror is in the extended position in the configuration shown in FIG. 7, and FIG. 8B is a schematic diagram showing one divided irradiation range of the drawing light when the door mirror is in the stored position in the configuration shown in FIG. 7. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the drawings used in the following description, in order to make each component easier to see, the dimensions of the components may be shown on different scales, and the dimensional ratios of each component may not necessarily be the same as in reality.

[0012] As an embodiment of the present invention, a road surface drawing device 1 shown in, for example, FIGS. 1 to 9 will be described. FIG. 1 is a schematic diagram showing an example of road surface drawing by the road surface drawing device 1. FIG. 2 is a block diagram showing the configuration of the road surface drawing device 1. FIG. 3 is a schematic diagram showing the configuration of the light source unit 2 and the scanning unit 3 included in the road surface drawing device 1. FIG. 4 is a schematic diagram showing the configuration of the light source unit 2. FIG. 5(A) is a schematic diagram showing the irradiation range E of the drawing light L when the conventional door mirror 101 is in the unfolded position, and FIG. 5(B) is a schematic diagram showing the irradiation range E of the drawing light L when the conventional door mirror 101 is in the stored position. FIG. 6(A) is a schematic diagram showing the first irradiation range E1 of the drawing light L when the door mirror 101 of the present invention is in the unfolded position, and FIG. 6(B) is a schematic diagram showing the second irradiation range E2 of the drawing light L when the door mirror 101 of the present invention is in the stored position. FIG. 7 is a schematic diagram showing the configuration of the lens unit 8 of the road surface drawing device 1. Fig. 8(A) is a schematic diagram showing multiple divided irradiation ranges Ea, Eb, Ec of the drawing light L when the door mirror 101 is in the deployed position in the configuration shown in Fig. 7, and Fig. 8(B) is a schematic diagram showing multiple divided irradiation ranges Ea, Eb, Ec of the drawing light L when the door mirror 101 is in the stored position in the configuration shown in Fig. 7. Fig. 9(A) is a schematic diagram showing multiple divided irradiation ranges Ea, Eb, Ec of the drawing light L when the door mirror 101 is in the deployed position in the configuration shown in Fig. 7, and Fig. 9(B) is a schematic diagram showing one divided irradiation range Eb of the drawing light L when the door mirror 101 is in the stored position in the configuration shown in Fig. 7.

[0013] The road surface drawing device 1 of this embodiment is installed on a door mirror 101 of a vehicle 100, as shown in Figure 1, and performs road surface drawing by projecting a drawing pattern P, such as letters or images, using drawing light L irradiated toward a road surface T on the side of the vehicle.

[0014] Specifically, the road surface drawing device 1 includes a light source unit 2, a scanning unit 3, and a control unit 4 electrically connected to the light source unit 2 and the scanning unit 3, as shown in FIG.

[0015] As shown in FIG. 3, the light source unit 2 includes multiple (three in this embodiment) light sources 5R, 5G, and 5B that emit light of different wavelengths, and emits drawing light L of a color tone (emission color) according to the proportion of light emitted from each light source 5R, 5G, and 5B.

[0016] As shown in FIG. 4, the light source unit 2 of this embodiment is composed of an LD package including a red LD chip (red light source) 5R that emits red light RL, a green LD chip (green light source) 5G that emits green light GL, a blue LD chip (blue light source) 5B that emits blue light BL, a first dichroic mirror 6B that reflects the blue light BL, a second dichroic mirror 6G that reflects the green light GL and transmits the blue light BL, a third dichroic mirror 6R that reflects the blue light BL and the green light GL and transmits the red light RL, a first focusing lens 7R that collects the red light RL, a second focusing lens 7G that collects the green light GL, and a third focusing lens 7B that collects the blue light BL.

[0017] In the light source unit 2, the ratio of red light RL, green light GL, and blue light BL can be controlled, and the color tone (emission color) of the drawing light L obtained by combining (mixing) these color lights RL, GL, and BL can be changed arbitrarily.

[0018] 2 and 3, the scanning unit 3 is composed of a MEMS (Micro-Electro-Mechanical Systems) mirror. The MEMS mirror is a movable mirror that uses MEMS technology, and controls the reflection direction of the drawing light L emitted from the light source unit 2 while oscillating in two-dimensional directions within a plane.

[0019] The control unit 4 is composed of a microcomputer such as a CPU, and controls the lighting of the multiple light sources 5R, 5G, and 5B (light source unit 2) to control the light amount and color gradation of the drawing light L. The control unit 4 also controls the driving of the MEMS mirror (scanning unit 3) to variably control the drawing pattern P.

[0020] In addition, the control unit 4 is electrically connected to a sensor 50 mounted on the vehicle 100. The sensor 50 detects that the passenger H has released the key lock of the vehicle 100 or that the passenger H has approached the vehicle 100, and supplies the detection signal to the control unit 4.

[0021] The sensor 50 is not necessarily limited to being mounted on the vehicle 100, but may be mounted on the road surface drawing device 1, for example.

[0022] In the road surface drawing device 1 of this embodiment having the above-mentioned configuration, when the sensor 50 detects that the passenger H has unlocked the key lock of the vehicle 100 or when the sensor 50 detects that the passenger H has approached the vehicle 100, road surface drawing is started under the control of the control unit 4.

[0023] Specifically, the drawing light L emitted from the light source unit 2 is scanned by the scanning unit 3, and the drawing light L is irradiated from the door mirror 101 toward the road surface T on the side of the vehicle. This makes it possible to perform road surface drawing by projecting a drawing pattern P, such as characters or an image, in an irradiation range E irradiated by the drawing light L.

[0024] In this embodiment, the drawing pattern P is displayed as the word "welcome" to the passenger H.

[0025] The above-mentioned door mirror 101 is attached so as to be freely rotatable (opened and closed) within an angular range of approximately 90° between an deployed position in which it is deployed outward from the side of the vehicle and a stored position in which it is stored inward along the side of the vehicle.

[0026] Therefore, when the door mirror 101 is rotated from the deployed position to the stored position, a portion of the irradiation range E of the drawing light L irradiated toward the road surface T to the side of the vehicle as shown in Figure 5(A), namely, a portion of the irradiation range E' shown in Figure 5(B), overlaps with the vehicle 100, making it impossible to recognize the drawing pattern P formed by the drawing light L, and significantly impairing the visibility of the road surface drawing.

[0027] For example, when a passenger H opens the door of a vehicle 100, a drawing pattern P of a "door open image" may be drawn on the road surface T on the side of the vehicle to notify pedestrians or cyclists passing near the side of the vehicle 100 of a danger.

[0028] In such a case, it is possible that the door mirror 101 is unfolded or folded up. Therefore, if road surface drawing is performed toward the illumination range E when the door mirror 101 is unfolded as shown in Fig. 5(A), a part of the illumination range E' will overlap with the vehicle 100 when the door mirror 101 is folded up as shown in Fig. 5(B), making it impossible to recognize the drawing pattern P, and it may not be possible to properly notify pedestrians and bicycles passing near the side of the vehicle 100 of a danger.

[0029] In contrast, in the road surface drawing device 1 of this embodiment, as shown in Fig. 6(A), when the door mirror 101 is in the deployed position, the drawing light L is irradiated toward either a first irradiation range E1 of the road surface T on the side of the vehicle that is located in front of the door mirror 101, or a second irradiation range E2 of the road surface T that is located behind the door mirror 101 (first irradiation range E1 in Fig. 6(A)). On the other hand, as shown in Fig. 6(B), when the door mirror 101 is in the stored position, the drawing light L is irradiated toward the second irradiation range E2.

[0030] In this embodiment, of the area partitioned by reference axes in the vehicle length direction and the vehicle width direction, which are perpendicular to each other with the road surface drawing device 1 as a reference, the first illumination range E1 is located in an area outside the vehicle 100 across the reference axis in the vehicle length direction and in front of the vehicle 100 across the reference axis in the vehicle width direction, and the second illumination range E2 is located in an area outside the vehicle 100 across the reference axis in the vehicle length direction and in rear of the vehicle 100 across the reference axis in the vehicle width direction.

[0031] In the road surface drawing device 1 of this embodiment, as shown in Figure 6 (A), when the door mirror 101 is in the extended position, a drawing pattern P is formed by drawing light L irradiated to the first irradiation range E1, and as shown in Figure 6 (B), when the door mirror 101 is in the stored position, a drawing pattern P is formed by drawing light L irradiated to the second irradiation range E2.

[0032] That is, the drawing pattern P that is drawn in the second illumination area E2 when the door mirror 101 is folded down may be drawn in the first illumination area E1 when the door mirror 101 is unfolded.

[0033] As a result, in the road surface drawing device 1 of this embodiment, it is possible to properly draw the drawing pattern P on the road surface in the first irradiation range E1 or the second irradiation range E2 of the drawing light L irradiated from the door mirror 101 toward the side of the vehicle, without being affected by the opening and closing of the door mirror 101.

[0034] Therefore, in the road surface drawing device 1 of this embodiment, since the visibility of the drawing pattern P drawn on the road surface T to the side of the vehicle is not impaired, it is possible to properly notify pedestrians and bicycles passing near the side of the vehicle 100 of the drawing pattern P of the ``door open image'' drawn on the road surface T to the side of the vehicle described above.

[0035] Furthermore, in the road surface drawing device 1 of this embodiment, when the door mirror 101 is rotated between the deployed position and the stored position, for example as shown in Figure 6 (A), the orientation of the drawing pattern P formed by the drawing light L irradiated to the first irradiation range E1 does not match the orientation of the drawing pattern P' formed by the drawing light L irradiated to the second irradiation range E2.

[0036] Therefore, in the road surface drawing device 1 of this embodiment, when the door mirror 101 is rotated between the deployed position and the stored position, the road surface drawing is switched so that the orientation of the drawing pattern P formed by the drawing light L irradiated to the first irradiation range E1 shown in Figure 6 (A) coincides with the orientation of the drawing pattern P formed by the drawing light L irradiated to the second irradiation range E2 shown in Figure 6 (B).

[0037] Specifically, in the control unit 4 of this embodiment, when displaying a warning of, for example, a "door open image" as the drawing pattern P in response to the approach of a motorcycle or the like from behind the vehicle, the control unit 4 performs control to switch the road surface drawing so that the orientation of the drawing pattern P matches when the door mirror 101 shown in Figure 6(A) is in the extended position and when the door mirror 101 shown in Figure 6(B) is in the stored position.

[0038] As a result, in the road surface drawing device 1 of this embodiment, it is possible to appropriately notify pedestrians and bicycles passing near the side of the vehicle 100 of the drawing pattern P of the ``door open image'' drawn on the road surface T to the side of the vehicle described above, without being affected by the opening and closing of the door mirror 101.

[0039] In addition, as shown in Figure 7, the road surface drawing device 1 of this embodiment may be configured to include, in addition to the configuration shown in Figures 2 and 3 above, a lens unit 8 that projects the drawing light L scanned by the scanning unit 3 toward the road surface to the side of the vehicle.

[0040] Lens portion 8 has a first light guiding portion 9a, and a second light guiding portion 9b and a third light guiding portion 9c branching off from first light guiding portion 9a in opposite directions.

[0041] In addition, the lens unit 8 has a first incident surface 10a, a second incident surface 10b, and a third incident surface 10c at the base end side of the first light guiding unit 9a, a first exit surface 11a, a first reflecting surface 12a, and a second reflecting surface 12b at the tip end side of the first light guiding unit 9a, a third reflecting surface 12c and a fourth reflecting surface 12d at the middle of the second light guiding unit 9b and the third light guiding unit 9c, a second exit surface 11b at the tip end side of the second light guiding unit 9b, and a third exit surface 11c at the tip end side of the third light guiding unit 9c.

[0042] In the lens unit 8, the drawing light L scanned by the scanning unit 3 enters the first light guiding unit 9a from the first entrance surface 10a, is guided toward the tip side of the second light guiding unit 9b while being reflected by the first reflecting surface 12a and the third reflecting surface 12c, and then is emitted from the second exit surface 11b to the outside of the second light guiding unit 9b. As a result, the drawing light L emitted from the second exit surface 11b is irradiated toward the first divided irradiation range Ea.

[0043] Meanwhile, in the lens unit 8, the drawing light L scanned by the scanning unit 3 is incident from the second entrance surface 10b into the first light guiding unit 9a, guided toward the tip side of the first light guiding unit 9a, and then emitted from the first exit surface 11a to the outside of the first light guiding unit 9a. As a result, the drawing light L emitted from the first exit surface 11a is irradiated toward the second divided irradiation range Eb.

[0044] Meanwhile, in the lens unit 8, the drawing light L scanned by the scanning unit 3 enters the inside of the first light guiding unit 9a from the third entrance surface 10c, is guided toward the tip side of the third light guiding unit 9c while being reflected by the second reflecting surface 12b and the fourth reflecting surface 12d, and then is emitted from the third exit surface 11c to the outside of the third light guiding unit 9c. As a result, the drawing light L emitted from the third exit surface 11c is irradiated toward the third divided irradiation range Ec.

[0045] In the road surface drawing device 1 of this embodiment having the above-mentioned configuration, it is possible to project drawing light L toward multiple (three in this embodiment) divided illumination ranges Ea, Eb, and Ec of the road surface T using the above-mentioned lens unit 8.

[0046] In addition, in the lens unit 8, by adjusting the tilt directions of the first exit surface 11a, the second exit surface 11b, and the third exit surface 11c, it is possible to adjust the light distribution of the drawing light L emitted from the first exit surface 11a, the second exit surface 11b, and the third exit surface 11c. This makes it possible to adjust the intervals between the first divided irradiation range Ea, the second divided irradiation range Eb, and the third divided irradiation range Ec, etc.

[0047] In the road surface drawing device 1 of this embodiment, as shown in Fig. 8(A), when the door mirror 101 is in the deployed position, the above-mentioned lens unit 8 is used to irradiate drawing light L toward first, second, and third divided illumination ranges Ea, Eb, and Ec of the road surface T located ahead of the door mirror 101. At this time, the first, second, and third divided illumination ranges Ea, Eb, and Ec are projected in a line along the fore-and-aft direction of the vehicle 100.

[0048] On the other hand, in the road surface drawing device 1 of this embodiment, when the door mirror 101 is in the retracted position, as shown in Fig. 8(B), the lens unit 8 shown in Fig. 7 is used to irradiate drawing light L toward first, second and third divided illumination ranges Ea, Eb and Ec of the road surface T located behind the door mirror 101 on the vehicle. At this time, the first, second and third divided illumination ranges Ea, Eb and Ec are projected side by side in the left-right direction of the vehicle 100.

[0049] As a result, in the road surface drawing device 1 of this embodiment, it is possible to properly draw the drawing pattern P on the road surface in multiple divided irradiation ranges Ea, Eb, Ec of the drawing light L irradiated from the door mirror 101 toward the side of the vehicle, without being affected by the opening and closing of the door mirror 101.

[0050] In addition, in the road surface drawing device 1 of this embodiment, when the door mirror 101 is rotated between the deployed position and the stored position, the road surface drawing is switched so that the orientation of the drawing pattern P formed by the drawing light L irradiated to the first irradiation range E1 shown in Figure 8 (A) coincides with the orientation of the drawing pattern P formed by the drawing light L irradiated to the second irradiation range E2 shown in Figure 8 (B).

[0051] Specifically, in the control unit 4 of this embodiment, when displaying a warning of, for example, a "door open image" as the drawing pattern P in response to the approach of a motorcycle or the like from behind the vehicle, the control unit 4 performs control to switch the road surface drawing so that the orientation of the drawing pattern P matches in the third divided irradiation range Ec, which has the least positional change, when the door mirror 101 shown in Figure 8 (A) is in the extended position and when the door mirror 101 shown in Figure 8 (B) is in the stored position.

[0052] As a result, in the road surface drawing device 1 of this embodiment, it is possible to appropriately notify pedestrians and bicycles passing near the side of the vehicle 100 of the drawing pattern P of the ``door open image'' drawn on the road surface T to the side of the vehicle described above, without being affected by the opening and closing of the door mirror 101.

[0053] In addition, in the road surface drawing device 1 of this embodiment, when the door mirror 101 is in the extended position, as shown in Figure 9 (A), the above-mentioned lens unit 8 is used to project drawing light L toward first and second divided illumination ranges Ea, Eb of the road surface T located in front of the vehicle beyond the door mirror 101, and toward a third divided illumination range Ec located in the second illumination range E2.

[0054] On the other hand, in the road surface drawing device 1 of this embodiment, when the door mirror 101 is in the stored position, as shown in Figure 9(B), the lens unit 8 shown in Figure 7 is used to project drawing light L toward either the first or second divided illumination range Ea, Eb (the second divided illumination range Eb in Figure 9(B)) of the road surface T located rearward of the door mirror 101.

[0055] In this case, the third divided irradiation range Ec, which is in the second irradiation range E2 when the door mirror 101 is unfolded, overlaps with the vehicle 100 when the door mirror 101 is stored, so the drawing pattern P is not drawn on the road surface in the third divided irradiation range Ec when the door mirror 101 is stored.

[0056] On the other hand, with respect to the first and second divided illumination ranges Ea, Eb that are in the first illumination range E1 when the door mirror 101 is unfolded, it is possible to draw the drawing pattern P on the road surface in either the first or second divided illumination ranges Ea, Eb that are in the second illumination range E2 when the door mirror 101 is stored.

[0057] In this way, it is possible to selectively perform drawing of the drawing pattern P on the road surface in the first divided irradiation area Ea, the second divided irradiation area Eb, and the third divided irradiation area Ec.

[0058] In addition, with regard to the drawing pattern P of the "door open image" drawn in the second divided illumination range Eb when the door mirror 101 is unfolded, a road surface drawing is performed in which the orientation of the drawing pattern P is switched in the second divided illumination range Eb when the door mirror 101 is folded down.

[0059] On the other hand, with regard to the drawing pattern P drawn in the first and third divided illumination ranges Ea, Ec when the door mirror 101 is unfolded, it is possible to perform road surface drawing in either the first or second divided illumination ranges Ea, Eb when the door mirror 101 is stored.

[0060] In this case, it is also possible to perform control to switch the drawing pattern P at the required timing, separate from the drawing pattern P of the "door open image" drawn in the second divided irradiation range Eb when the door mirror 101 is folded down.

[0061] The present invention is not necessarily limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0062] For example, the road surface drawing device 1 of this embodiment is not limited to the above-mentioned case of drawing the road surface when the vehicle is stopped, but can also draw the road surface while the vehicle is traveling. In that case, the drawing pattern P can display, for example, an image corresponding to a turn signal or "AUTOPILOT" during automatic driving.

[0063] In the road surface drawing device 1 of this embodiment, the light source unit 2 is configured to use laser light sources such as a red LD chip 5R, a green LD chip 5G, and a blue LD chip 5B, but it is also possible to use LED light sources such as a red LED chip 5R, a green LED chip 5G, and a blue LED chip 5B. In this configuration, the drawing pattern P is formed using a mask.

[0064] Although the light source unit 2 includes light sources corresponding to the three primary colors of red light RL, green light GL, and blue light BL, it may include light sources emitting other colors of light, such as orange light or white light. Furthermore, it is also possible to include a plurality of light sources of the same color. [Explanation of symbols]

[0065] REFERENCE SIGNS LIST 1...Road surface drawing device 2...Light source unit 3...Scanning unit (MEMS mirror) 4...Control unit 5R...Red LD chip (red light source) 5G...Green LD chip (green light source) 5B...Blue LD chip (blue light source) 6B...First dichroic mirror 6G...Second dichroic mirror 6R...Third dichroic mirror 7R...First condenser lens 7G...Second condenser lens 7B...Third condenser lens 8...Lens unit 50...Sensor 100...Vehicle 101...Door mirror L...Drawing light RL...Red light GL...Green light BL...Blue light H...Occupant T...Road surface E...Irradiation area E1...First irradiation area E2...Second irradiation area Ea...First divided irradiation area Eb...Second divided irradiation area Ec...Third divided irradiation area P...Drawing pattern

Claims

1. A road surface drawing device that is installed on a door mirror of a vehicle and draws a road surface by irradiating a drawing light toward a road surface on the side of the vehicle, The door mirror is attached so as to be freely rotatable between a deployed position in which the door mirror is deployed outward from a side of the vehicle and a stored position in which the door mirror is stored inward along the side of the vehicle, When the door mirror is in the deployed position, a drawing light is irradiated toward either a first illumination range of the road surface located forward of the door mirror and a second illumination range of the road surface located rearward of the door mirror, among the road surfaces on the side of the vehicle; When the door mirror is in the stored position, the imaging light is irradiated toward the second illumination range; A road surface drawing device characterized in that a drawing pattern formed by drawing light irradiated to the first illumination range when the door mirror is in the extended position is formed by drawing light irradiated to the second illumination range when the door mirror is in the stored position.

2. The road surface drawing device according to claim 1, characterized in that, when the door mirror is rotated between the deployed position and the stored position, the road surface drawing is switched so that the orientation of a drawing pattern formed by the drawing light irradiated to the first irradiation range coincides with the orientation of a drawing pattern formed by the drawing light irradiated to the second irradiation range.

3. a light source unit that emits the drawing light; a scanning unit that forms a drawing pattern by scanning the drawing light emitted from the light source unit; a lens unit that projects the drawing light scanned by the scanning unit onto a road surface on the side of the vehicle, 2. The road surface drawing device according to claim 1, wherein the lens unit projects drawing light toward a plurality of divided illumination ranges of the road surface.

Images