Road surface marking device

Abstract

To provide a road surface drawing device that has a simple structure, and can make a drawing with a clear outline on a road surface.SOLUTION: A road surface drawing device (100) comprises: a light emitting part (10) for emitting illumination light; a reflection part comprising a first reflection region (21a) and a second reflection region (21b), and for reflecting the illumination light as first reflected light in the first reflection region (21a), and reflecting the illumination light as second reflected light in the second reflection region (21b); and a shade part (30) comprising an opening part (31), and for partially blocking the first reflected light and the second reflected light with an outer edge of the opening part (31). The first reflected light passes through a first passage region of the opening part (31). The second reflected light passes through a second passage region of the opening part (31). The first passage region and the second passage region include an overlapping passage region in which they at least partially overlap each other.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a road surface drawing apparatus.

Background Art

[0002] In recent years, for the purpose of improving the safety of the host vehicle or other vehicles, or improving the communication between drivers and pedestrians, development of vehicle lamps capable of projecting images showing necessary information onto the road surface has been advanced. Patent Document 1 discloses a road surface drawing apparatus for a vehicle that calculates a braking distance corresponding to the vehicle speed, draws a road surface display extending from the vehicle to a stoppable position ahead of the vehicle by the braking distance on the road surface of the traveling lane ahead of the vehicle, and makes the driver recognize the risk of collision with road obstacles such as preceding vehicles and pedestrians existing before the stoppable position.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the road surface drawing apparatus described in Patent Document 1, laser light is reflected by a minute mirror, and various shapes can be drawn on the road surface by modulation and scanning of the laser light. However, when drawing a fixed image on the road surface, there is no need to change the shape of the projection light, so modulation and scanning by the minute mirror are unnecessary, which is disadvantageous in terms of downsizing and cost reduction. In addition, when light from a light source is projected onto the road surface to form a predetermined shape using optical members such as a lens and a reflecting mirror, there is a problem that the outline becomes blurred.

[0005] The present invention has been made in view of the above conventional problems, and an object thereof is to provide a road surface drawing apparatus capable of performing drawing with a clear outline on a road surface with a simple configuration. [Means for solving the problem]

[0006] To solve the above problems, the road surface drawing device of the present invention comprises a light-emitting unit that emits irradiated light, a reflective unit having a first reflective region and a second reflective region, which reflects the irradiated light as first reflected light in the first reflective region and reflects the irradiated light as second reflected light in the second reflective region, and a shade unit having an opening, which blocks a portion of the first reflected light and the second reflected light at the outer edge of the opening. The first reflected light and the second reflected light are irradiated into different first and second irradiation areas within the shade portion, respectively. The first reflected light passes through a first passage region of the aperture, the second reflected light passes through a second passage region of the aperture, and the first passage region and the second passage region include an overlapping passage region in which at least a portion overlaps.

[0007] In the road surface drawing device of the present invention, the opening of the shade section has a first passage region and a second passage region, and the first reflected light and the second reflected light reflected by the first reflection region and the second reflection region of the reflecting section, respectively, pass through the first passage region and the second passage region, which include an overlapping passage region. Therefore, it is possible to draw a clear outline on the road surface with a simple configuration.

[0008] Furthermore, in one aspect of the present invention, the region where the light intensity of the first reflected light and / or the second reflected light is maximum passes through a region other than the overlapping region of the opening.

[0009] Furthermore, in one aspect of the present invention, the shade part Inside In, First irradiation region This is a wider range than the first passing region and the overlapping passing region. and , Second irradiation region This is a wider range than the second passage region and the overlapping passage region. That is It is characterized by the following:

[0010] Furthermore, in one aspect of the present invention, the first reflected light and the second reflected light that have passed through the opening are refracted, contour of the opening A predetermined shape corresponding to Image on the road surface It has a projection lens section for projection.

[0011] Furthermore, in one aspect of the present invention, the drawing light that has passed through the overlapping passage region is projected onto a position on the road surface that is further away from the projection lens than the area outside the overlapping passage region.

[0012] Furthermore, in one aspect of the present invention, the first reflected light and the second reflected light pass through the opening at a predetermined angle of inclination and are incident on a position offset to one side from the center of the projection lens portion. [Effects of the Invention]

[0013] The present invention provides a road surface drawing device that can draw clear outlines on the road surface with a simple configuration. [Brief explanation of the drawing]

[0014] [Figure 1] This is a schematic perspective view showing the projection of an image P onto a road surface L using the road surface drawing device 100 according to the first embodiment. [Figure 2] This is an exploded perspective view showing an example configuration of the road surface drawing device 100. [Figure 3] This is a schematic cross-sectional view showing an example of the configuration of the road surface drawing device 100. [Figure 4] This is a schematic diagram showing the relationship between the opening 31 in the shade section 30 and the first reflected light and the second reflected light. Figure 4(a) shows the first illumination region 32a irradiated by the first reflected light, Figure 4(b) shows the second illumination region 32b irradiated by the second reflected light, Figure 4(c) shows the first passage region 31a, the second passage region 31b, and the overlapping passage region 31c of the opening 31, and Figure 4(d) shows a superposition of (a) to (c). [Figure 5] This is a schematic diagram showing the relationship between the opening 31 and reflected light in the shade portion 30 according to the second embodiment. [Figure 6] This is a schematic diagram showing the relationship between the opening 31 and reflected light in the shade portion 30 according to the third embodiment. [Figure 7] This is a schematic cross-sectional view showing an example of the configuration of the road surface drawing device 100 according to the fourth embodiment. MODE FOR CARRYING OUT THE INVENTION

[0015] (First Embodiment) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same or equivalent components, members, and processes shown in each drawing are denoted by the same reference numerals, and redundant descriptions will be omitted as appropriate. FIG. 1 is a schematic perspective view showing projection of an image P onto a road surface L using a road surface drawing apparatus 100 according to the present embodiment. As shown in FIG. 1, the road surface drawing apparatus 100 is mounted on a vehicle 50, and projects an image P of a predetermined shape by emitting irradiation light toward the road surface L. Although FIG. 1 shows an example in which the road surface drawing apparatus 100 is disposed at the front center of the vehicle 50, the arrangement of the road surface drawing apparatus 100 is not limited, and the road surface drawing apparatus 100 may be disposed in a vehicular lamp such as a headlight, a taillight, a front combination lamp, or a rear combination lamp.

[0016] FIG. 2 is an exploded perspective view showing a configuration example of the road surface drawing apparatus 100. As shown in FIG. 2, the road surface drawing apparatus 100 includes a light emitting unit 10, a reflecting unit 20, a shade unit 30, and a projection lens unit 40.

[0017] The light emitting unit 10 is a portion that emits irradiation light when electric power is supplied. The configuration of the light emitting unit 10 is not limited, and as an example, a semiconductor light emitting element such as an LED (Light Emitting Diode) can be used. The color of the irradiation light emitted by the light emitting unit 10 is not particularly limited, but is white as an example in the present embodiment. Further, the light emitting unit 10 is not limited to an LED, and a semiconductor laser, an organic EL (Electro Luminescence) element, or the like may be used. Although not illustrated in FIG. 2, the light emitting unit 10 is mounted on a mounting portion such as a circuit board and electrically connected thereto, and light emission is controlled by a control signal using electric power supplied to the circuit board.

[0018] The reflective section 20 is an optical element that reflects light incident from the light-emitting section 10 and irradiates the shade section 30 with it, and comprises a first reflective region 21a and a second reflective region 21b. The first reflective region 21a and the second reflective region 21b each have separate reflective surfaces, and as described later, they irradiate different regions of the shade section 30 with light from the same light-emitting section 10 as first reflected light and second reflected light. The light reflected by the first reflective region 21a is the first reflected light, and the light reflected by the second reflective region 21b is the second reflected light. The material constituting the reflective section 20 is not limited, and a metal material may be used, or a reflective film of metal or the like may be formed on the surface of a resin material by vapor deposition or the like.

[0019] Figure 2 shows a case where the first reflection region 21a and the second reflection region 21b are separated into two parts, but multiple regions may be connected to form a single reflector. Furthermore, the shapes of the first reflection region 21a and the second reflection region 21b are not limited and can be made of free-form surfaces or the like so that the first reflected light and the second reflected light can be projected onto the shade portion 30 in a desired shape. Also, Figure 2 shows a case where the first reflection region 21a and the second reflection region 21b are symmetrical, but they can be asymmetrical depending on the shape of the region onto which the first reflected light and the second reflected light are projected.

[0020] The shade portion 30 is a plate-shaped member with an opening 31 formed therein, and is made of a material that blocks at least the irradiated light. In the shade portion 30, light that reaches areas other than the opening 31 is blocked, while light that reaches the opening 31 is transmitted. The material that makes up the shade portion 30 is not limited, and metal or resin can be used. In Figure 2, a plate-shaped shade portion 30 is shown, but the shape is not limited.

[0021] The opening 31 is a light-transmitting portion provided in the shade portion 30. The outer edge of the opening 31 blocks the first and second reflected light, and the outline of the image P projected onto the road surface L is formed as the first and second reflected light pass through the opening 31. The first and second reflected light that have passed through the opening 31 reach the projection lens portion 40. Here, the opening 31 is shown as a hole that penetrates from the front to the back surface of the shade portion 30, but the opening 31 may also be filled with a light-transmitting material.

[0022] The projection lens section 40 is an optical element that refracts the first and second reflected light that has passed through the aperture 31, expanding the light diameter and projecting it onto the road surface L as drawing light. In Figure 2, a single lens is shown as the projection lens section 40, but multiple lenses may be combined.

[0023] Figure 3 is a schematic cross-sectional view showing an example configuration of the road surface drawing device 100. In Figure 3, for simplicity, the first reflection region 21a and the second reflection region 21b of the reflecting section 20 are shown superimposed with the same shape. The arrows in the figure indicate typical optical paths of the light emitted from the light-emitting section 10. The dashed lines in the figure indicate directions perpendicular to the center of the shade section 30. The light emitted from the light-emitting section 10 is reflected as first reflected light and second reflected light in the first reflection region 21a and the second reflection region 21b, passes through the opening 31 and projection lens section 40 of the shade section 30, and is projected onto the road surface L as drawing light.

[0024] In the example shown in Figure 3, the light-emitting section 10 and the reflecting section 20 are positioned above the center of the shade section 30. As a result, the first and second reflected light reflected by the reflecting section 20 arrive at the shade section 30 at a predetermined angle and pass through the opening 31 at a predetermined angle. In addition, the first and second reflected light are incident on the projection lens section 40 at a position offset to one side from the center. Alternatively, the light-emitting section 10 and the reflecting section 20 may be inverted vertically and positioned below the center of the shade section 30.

[0025] The first and second reflected light pass through the opening 31 at a predetermined downward or upward angle, and the drawing light is refracted at an off-center position from the center of the projection lens section 40. As a result, the drawing light projected from the road surface drawing device 100 is projected from an off-center position on one side of the projection lens section 40, making it possible to project the drawing light while avoiding other components included in the vehicle 50.

[0026] Figure 4 is a schematic diagram showing the relationship between the opening 31 in the shade section 30 and the first and second reflected light. Figure 4(a) shows the first illumination region 32a irradiated by the first reflected light, Figure 4(b) shows the second illumination region 32b irradiated by the second reflected light, Figure 4(c) shows the first passage region 31a, the second passage region 31b, and the overlapping passage region 31c of the opening 31, and Figure 4(d) shows a superposition of (a) to (c).

[0027] In the example shown in Figure 4(a), the first reflected light reflected in the first reflection region 21a illuminates the first illumination region 32a, which is elliptical or oblong at the position of the shade portion 30. In the example shown in Figure 4(b), the second reflected light reflected in the second reflection region 21b illuminates the second illumination region 32b, which is elliptical or oblong at the position of the shade portion 30. In the examples shown in Figures 4(a) and 4(b), the first illumination region 32a and the second illumination region 32b are symmetrical with their inclinations in opposite directions.

[0028] In the example shown in Figure 4(c), the opening 31 is configured in a V-shape where two linear regions intersect at one end, with one linear region constituting the first passage region 31a and the other linear region constituting the second passage region 31b. The area where the first passage region 31a and the second passage region 31b intersect constitutes the overlapping passage region 31c.

[0029] As shown in Figure 4(d), the first irradiation region 32a of the first reflected light is wider than the first passing region 31a and the overlapping passing region 31c. Similarly, the second irradiation region 32b of the second reflected light is wider than the second passing region 31b and the overlapping passing region 31c. Furthermore, the overlapping region of the first irradiation region 32a and the second irradiation region 32b is wider than the overlapping passing region 31c.

[0030] As shown in Figures 4(a) to 4(d), by irradiating the first illumination area 32a with the first reflected light in the first reflection area 21a and irradiating the second illumination area 32b with the second reflected light in the second reflection area 21b, the first and second reflected light can be irradiated in a shape similar to the shape of the aperture 31. This suppresses the amount of light blocked by the shade area 30 and improves the utilization efficiency of the light emitted from the light-emitting area 10. Furthermore, since the first illumination area 32a and the second illumination area 32b are wider than the first passing area 31a and the second passing area 31b, respectively, the outlines of the first and second reflected light can be reliably shaped at the outer edge of the aperture 31, and the contours of the drawing light that has passed through the aperture 31 can be made clear.

[0031] The drawing light refracted by the projection lens section 40 is projected onto the road surface L with its vertical orientation inverted. As a result, the first and second reflected light that pass through the overlapping passage region 31c are projected onto the image P at a position farther from the vehicle 50. Generally, light irradiated at a distance has an expanded light diameter, which tends to reduce brightness and thus the contrast of the image P. However, in this embodiment, the overlapping passage region 31c is the region where the first irradiation region 32a and the second irradiation region 32b overlap, and both the first and second reflected light pass through it, resulting in a greater amount of light than in other regions. This improves the brightness in the region of the image P that tends to have reduced contrast when projected at a distance, allowing for clearer outlines to be drawn on the road surface.

[0032] Furthermore, in the first illumination region 32a and the second illumination region 32b at the shaded portion 30, the first reflected light and the second reflected light may have a distribution of light intensity. For example, the position of the maximum light intensity in the first reflected light and the second reflected light may be a different position from the overlapping passage region 31c. As a result, since both the first reflected light and the second reflected light pass through the overlapping passage region 31c, it is possible to suppress the luminance difference between the overlapping passage region 31c and the rest of the light from becoming too large when the maximum light intensity in the first reflected light and the second reflected light passes through the overlapping passage region 31c.

[0033] Another example is to set the position of the overlapping passage region 31c as the position with the maximum light intensity in the first and second reflected light. As a result, both the first and second reflected light pass through the overlapping passage region 31c, the brightness of the overlapping passage region 31c can be maximized, and sufficient light quantity of the drawing light projected onto the portion of the image P far from the vehicle 50 can be secured.

[0034] As described above, in the road surface drawing device 100 of this embodiment, the opening 31 of the shade section 30 has a first passage region 31a and a second passage region 31b, and the first reflected light and the second reflected light reflected by the first reflection region 21a and the second reflection region 21b of the reflecting section 20 pass through the first passage region 31a and the second passage region 31b, which include the overlapping passage region 31c. Therefore, it is possible to draw a clear outline on the road surface with a simple configuration.

[0035] (Second Embodiment) Next, a second embodiment of the present invention will be described with reference to Figure 5. Content that overlaps with the first embodiment will be omitted from the explanation. In the first embodiment, an example was shown in which the reflective portion 20 had two regions, a first reflective region 21a and a second reflective region 21b. In this embodiment, however, a case will be described in which a third reflective region (not shown) is further included and a third reflected light is irradiated.

[0036] Figure 5 is a schematic diagram showing the relationship between the opening 31 and reflected light in the shade portion 30 according to this embodiment. Figure 5(a) shows the first illumination region 32a irradiated by the first reflected light, Figure 5(b) shows the second illumination region 32b irradiated by the second reflected light, Figure 5(c) shows the third illumination region 32d irradiated by the third reflected light, Figure 5(d) shows the first passage region 31a, the second passage region 31b, the third passage region 31d, and the overlapping passage region 31c of the opening 31, and Figure 5(e) shows a superposition of (a) to (d).

[0037] In the example shown in Figures 5(a) and 5(b), the first irradiation area 32a and the second irradiation area 32b are oval shapes that are symmetrical with opposite inclinations, similar to the first embodiment. In the example shown in Figure 5(c), the third reflected light reflected in the third reflection area is irradiated into the third irradiation area 32d, which is an oval shape extending vertically at the position of the shade portion 30. The lower end of the third irradiation area 32d overlaps with the area where the first irradiation area 32a and the second irradiation area 32b are irradiated together.

[0038] In the example shown in Figure 5(d), the opening 31 is composed of a downward-pointing arrow shape where three linear regions intersect at one end, with each linear region constituting the first passage region 31a, the second passage region 31b, and the third passage region 31d. The intersecting region of the first passage region 31a, the second passage region 31b, and the third passage region 31d constitutes the overlapping passage region 31c.

[0039] As shown in Figure 5(d), the third irradiation region 32d of the third reflected light is also wider than the third passing region 31d and the overlapping passing region 31c. Furthermore, the overlapping region of the first irradiation region 32a, the second irradiation region 32b, and the third irradiation region 32d is wider than the overlapping passing region 31c.

[0040] In this embodiment as well, since the first reflected light, second reflected light, and third reflected light can be irradiated in a shape similar to the shape of the opening 31, the amount of light blocked by the shade portion 30 can be suppressed, and the utilization efficiency of the light irradiated from the light-emitting portion 10 can be improved. Furthermore, since the first irradiation area 32a, the second irradiation area 32b, and the third irradiation area 32d are wider than the first passing area 31a, the second passing area 31b, and the third passing area, respectively, the outer edges of the opening 31 can be reliably aligned with the outlines of the first reflected light, second reflected light, and third reflected light, and the outlines of the drawing light that has passed through the opening 31 can be made clear.

[0041] (Third embodiment) Next, a third embodiment of the present invention will be described with reference to Figure 6. Content that overlaps with the first embodiment will be omitted from the explanation. In the first embodiment, an example was shown in which the first irradiation area 32a and the second irradiation area 32b were elliptical or oblong; however, in this embodiment, an example will be described in which the shape of the opening 31 is more suitable.

[0042] Figure 6 is a schematic diagram showing the relationship between the opening 31 and reflected light in the shade portion 30 according to this embodiment. Figure 6(a) shows the first illumination region 32a irradiated by the first reflected light, Figure 6(b) shows the second illumination region 32b irradiated by the second reflected light, Figure 6(c) shows the first passage region 31a, the second passage region 31b, and the overlapping passage region 31c of the opening 31, and Figure 6(d) shows a superposition of (a) to (c).

[0043] In the example shown in Figures 6(a) and 6(b), the first and second reflected light reflected in the first reflection region 21a and the second reflection region 21b are directed onto the first illumination region 32a and the second illumination region 32b, which are partially bent at the position of the shade portion 30. In the example shown in Figures 6(a) and 6(b), the first illumination region 32a and the second illumination region 32b have a portion that is symmetrical with opposite inclinations and a portion that is bent and overlaps with the inclinations of the other.

[0044] In the example shown in Figure 6(c), the opening 31 is configured in a V-shape where two linear regions intersect at one end, with one linear region constituting the first passage region 31a and the other linear region constituting the second passage region 31b. The area where the first passage region 31a and the second passage region 31b intersect constitutes the overlapping passage region 31c. The overlapping passage region 31c in this embodiment is wider than that in the first embodiment and is set to form a small V-shape near the center of the opening 31.

[0045] As shown in Figure 6(d), the first irradiation region 32a and the second irradiation region 32b are wider than the combined regions of the first and second irradiated regions 31a and 31b, respectively, and the overlapping irradiated region 31c. Furthermore, the overlapping region of the first irradiation region 32a and the second irradiation region 32b is wider than the overlapping irradiated region 31c.

[0046] In this embodiment as well, since the first reflected light and the second reflected light can be irradiated in a shape similar to the shape of the opening 31, the amount of light blocked by the shade portion 30 can be suppressed, and the utilization efficiency of the light irradiated from the light-emitting portion 10 can be improved. Furthermore, since the first irradiation area 32a and the second irradiation area 32b are wider than the first passing area 31a and the second passing area 31b, respectively, the outer edges of the opening 31 can be reliably shaped to form the outlines of the first and second reflected light, and the contours of the drawing light that has passed through the opening 31 can be made clearer.

[0047] Furthermore, since the shapes of the first illumination region 32a and the second illumination region 32b are set to conform to the shape of the aperture 31, the overlapping passage region 31c through which both the first reflected light and the second reflected light pass is appropriately set. This improves the brightness of the drawing light projected after passing through the overlapping passage region 31c, thereby improving the contrast of the image P projected onto the road surface L.

[0048] (Fourth Embodiment) Next, a fourth embodiment of the present invention will be described with reference to Figure 7. Details that overlap with the first embodiment will be omitted. Figure 7 is a schematic cross-sectional view showing an example configuration of the road surface drawing device 100 according to this embodiment. In the first embodiment, the light emitted from the light-emitting unit 10 was reflected by the reflecting unit 20 and irradiated onto the shade unit 30, but in this embodiment, a portion of the light emitted from the light-emitting unit 10 is also directly irradiated onto the shade unit 30, which is a difference. In the figure, the vertical direction indicates the horizontal direction of the road surface drawing device 100. The arrows in the figure indicate typical optical paths of the light emitted from the light-emitting unit 10.

[0049] As shown in Figure 7, the road surface drawing device 100 of this embodiment includes a light-emitting unit 10, a reflective unit 20, a shade unit 30, and a projection lens unit 40. The reflective unit 20 also has a first reflective region 21a and a second reflective region 21b. The mounting unit (not shown) on which the light-emitting unit 10 is mounted is erected perpendicular to the plane of the paper, and the main light-emitting surface of the light-emitting unit 10 is positioned opposite the shade unit 30.

[0050] The illumination light irradiated from the light-emitting surface of the light-emitting unit 10 toward the shade unit 30 reaches the shade unit 30 directly as direct light and is partially blocked. The direct light that reaches the opening 31 passes through the shade unit 30 and is refracted by the projection lens unit 40 and projected onto the road surface L as drawing light. The direct illumination region (not shown) where direct light is irradiated at the position of the shade unit 30 is preferably wider than the first passing region 31a, the second passing region 31b, and the overlapping passing region 31c. The illumination light irradiated obliquely from the light-emitting surface of the light-emitting unit 10 reaches the first reflection region 21a and the second reflection region 21b of the reflecting unit 20, is reflected, and irradiates the shade unit 30 as the first reflected light and the second reflected light.

[0051] The configuration of the first passage region 31a, the second passage region 31b, and the overlapping passage region 31c of the shade portion 30, and the relationship between the first illumination region 32a and the second illumination region 32b are the same as in the first embodiment. In this embodiment, direct light from the light-emitting portion 10 also passes through any of the first passage region 31a, the second passage region 31b, and the overlapping passage region 31c, and the direct light, first reflected light, and second reflected light are projected onto the road surface L as drawing light from the projection lens portion 40.

[0052] In this embodiment as well, direct light, first reflected light, and second reflected light can be irradiated in a shape similar to that of the opening 31, thereby suppressing the amount of light blocked by the shade portion 30 and improving the utilization efficiency of the light irradiated from the light-emitting portion 10. Furthermore, since the direct irradiation area, the first irradiation area 32a, and the second irradiation area 32b are wider than the first passing area 31a and the second passing area 31b, respectively, the outer edges of the opening 31 can be reliably aligned with the outlines of the direct light, first reflected light, and second reflected light, and the outlines of the drawing light that has passed through the opening 31 can be made clear.

[0053] The present invention is not limited to the embodiments described above, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0054] 100…Road surface drawing device 10…Light-emitting part 20…Reflector 21a...first reflection area 21b…Second reflection area 30... Shade part 31…Opening 31a...1st passage area 31b…Second passage area 31c…Overlapping passage area 31d…Third passage area 32a...first irradiation area 32b…Second irradiation area 32d…Third irradiation area 40…Projection lens section 50... Vehicles

Claims

1. A light-emitting part that emits light, A reflective section comprising a first reflective region and a second reflective region, which reflects the irradiated light as first reflected light in the first reflective region and reflects the irradiated light as second reflected light in the second reflective region, It comprises an opening and a shade portion that blocks a portion of the first reflected light and the second reflected light at the outer edge of the opening, The first reflected light and the second reflected light are irradiated into different first and second irradiation areas within the shade portion, respectively. A road surface drawing device characterized in that the first reflected light passes through a first passage region of the opening, the second reflected light passes through a second passage region of the opening, and the first passage region and the second passage region include an overlapping passage region in which at least a portion overlaps.

2. A road surface drawing device according to claim 1, A road surface drawing device characterized in that the region where the light intensity of the first reflected light and / or the second reflected light is maximum passes through a region other than the overlapping passage region of the opening.

3. A road surface drawing device according to claim 1, A road surface drawing device characterized in that, within the shaded portion, the first irradiation area is wider than the first passing area and the overlapping passing area, and the second irradiation area is wider than the second passing area and the overlapping passing area.

4. A road surface drawing device according to any one of claims 1 to 3, A road surface drawing device characterized by having a projection lens section that refracts the first reflected light and the second reflected light that have passed through the opening, and projects an image of a predetermined shape corresponding to the contour of the opening onto the road surface.

5. A road surface drawing device according to claim 4, A road surface drawing device characterized in that the drawing light that has passed through the overlapping passage region is projected onto a position on the road surface that is further away from the projection lens than the area outside the overlapping passage region.

6. A road surface drawing device according to claim 4, The road surface drawing device is characterized in that the first reflected light and the second reflected light pass through the opening at a predetermined angle of inclination and are incident on a position biased to one side from the center of the projection lens portion.

Images