vehicle

Abstract

To display complex patterns inexpensively with good light utilization efficiency and a simple structure.SOLUTION: Provided is a vehicle 200 with an optical device 100 for displaying a light collecting mark 400, the optical device comprising a light source 110 and an optical element for collecting light emitted from the light source 110 onto an irradiation surface 301. A deflection surface of the optical element is divided into a plurality of regions, the light emitted via each region on the deflection surface of the optical element forms a partial irradiation image corresponding to each region of the deflection surface on the irradiation surface 301, and at least one light collecting mark 400 with each partial irradiation image combined is formed on the irradiation surface.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a vehicle. [Background technology]

[0002] For example, the system is mounted on a vehicle and displays predetermined patterns of route information on the road surface in front of the vehicle. There is technology to display the

[0003] For example, in Patent Document 1, "a road is long in the first direction, which is the width direction of the road, and the road width direction and the light A drawing pattern that is short in a second direction, which is a direction perpendicular to both of the emission axes of the source, is formed along the second direction. By using multiple light sources corresponding to each drawing pattern, the image is drawn at multiple locations on the road. a light source module in which each light source is arranged so as to be able to be turned on and off independently; and an optical system that directs light emitted from the light source toward the front of the vehicle (summary excerpt).” A road marking lamp unit is disclosed.

[0004] In addition, Patent Document 2 describes an auxiliary direction indicator that flashes in conjunction with the direction indicator lights provided at the front and rear of the vehicle. Indicator lights are installed on the underside of the front and rear bumpers to illuminate the road surface (summary excerpt) A road surface illumination device for a vehicle is disclosed.

[0005] In addition, Patent Document 3 states that "at least one semiconductor light emitting element serving as a light source, A plurality of diffraction gratings having different shapes that transmit light emitted from a semiconductor light emitting element to the front of a vehicle. and a switching means for switching the diffraction grating section through which the emitted light passes (abstract excerpt). A road marking lighting unit is disclosed in the "Iki" (Sui) patent.

[0006] Furthermore, Patent Document 4 states, "Vehicle speed sensor, steering sensor, direction indicator detection sensor Based on the information obtained from the above, the system will be able to predict the progress of the vehicle at the intersection where the vehicle is heading. If it is predicted that you will enter a road where entry is prohibited, a warning mark will be displayed. A drawing system is disclosed that is configured to draw on a road surface in the row direction (abstract excerpt).

[0007] In addition, Patent Document 5 states that "a headlight, a projector, and a light outlet are provided, When in projector mode, the projector is located in the optical path from the headlight to the light outlet. The optical image formed is projected onto a screen, and when the headlights are in operation, It is placed in a position that does not block the light path from the light source to the light outlet, and illuminates a specified area on the road. (Abstract excerpt)" A projection device for a vehicle is disclosed.

[0008] In addition, Patent Document 6 states that "these lights are arranged on the outer periphery of the vehicle body and are also scattered around as light sources. The system uses multiple light-emitting diodes to project a predetermined image onto the road surface, which functions as a sign when lit. A vehicle lamp is disclosed. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-107761 [Patent Document 2] Japanese Patent Application Publication No. 11-301346 [Patent Document 3] Japanese Patent Application Laid-Open No. 2016-135629 [Patent Document 4] Japanese Patent Application Laid-Open No. 2008-04587 [Patent Document 5] Japanese Patent Application Laid-Open No. 2004-136838 [Patent Document 6] Japanese Patent Application Laid-Open No. 2010-262889 Summary of the Invention [Problem to be solved by the invention]

[0010] It is desirable that such a display device has a simple structure and is capable of displaying a desired pattern. Furthermore, by displaying arrows and other marks, the driver can communicate his or her intentions to those around him or her, and the driver can This leads to improved safety against accidents. For example, the technologies disclosed in Patent Document 1 and Patent Document 2 These techniques use only a light source and a reflector to display a mark on the road surface to warn other vehicles. According to this technique, simple marks such as circles, ellipses, and rectangles can be displayed, but complex marks such as arrows cannot. Therefore, for example, when it is mounted on a vehicle, it is difficult to display the planned direction of travel. I can't come.

[0011] The technology disclosed in Patent Document 3 is a semiconductor light emitting device that switches and lights up a diffraction grating section. By switching between these, different shapes of drawing patterns are drawn on the road surface, etc. It is difficult to display complex marks with this configuration. In addition, complex mechanisms and complex controls are required. Furthermore, when switching between semiconductor light emitting elements to emit light, it is necessary to use a large number of semiconductor light emitting elements. A child is needed.

[0012] Patent Document 4 discloses a technique for using a laser drawing device to draw marks. The technology disclosed in Patent Document 4 makes it possible to display complex marks, but it is difficult to irradiate the laser. A complex mechanism is required to operate the head, and the sliding parts are subject to severe wear.

[0013] Patent Document 5 discloses a technique for using a liquid crystal projector to draw marks. In an LCD projector, a light source and a liquid crystal bulb are used to project a secondary image in the shape of a desired mark onto the liquid crystal bulb. A light source is created, and a secondary light source is projected by an optical system to draw marks on the road surface. It is possible to display complex marks. However, the liquid crystal bulb has low light transmittance, and In the liquid crystal bulb, the light in the area other than the mark is blocked, and the secondary The light source is also created, which further reduces the light utilization efficiency. It requires multiple optical systems, including a straight-line light generation optical system and a projection optical system, and therefore requires a complex structure. Instead of a liquid crystal valve, a DMD (Digital Micromirror Display) It is also possible to use a metal mask in the shape of a mark to create a secondary light source. However, in these cases, the light outside the mark is still blocked, and the light utilization The efficiency is low, and the optical system that guides the light from the light source to the DMD and metal mask, as well as the projection optical system, are It is still necessary, and it still requires complex structures.

[0014] The technology disclosed in Patent Document 6 requires multiple light-emitting diodes, which increases costs. In addition, complex mechanisms and controls are required to control multiple light-emitting diodes. In addition, since one mark is displayed using multiple light-emitting diodes, the resolution of the mark is poor.

[0015] Other techniques include, for example, a technique for displaying a desired mark by changing the shape of the mark. However, there is a technology to create a light source that matches the shape of the mark. In this case, costs will be higher.

[0016] The present invention has been made in view of the above circumstances, and has as its object to display a complex pattern with good light utilization efficiency, at low cost, and with a simple configuration. [Means for solving the problem]

[0017] The present invention is a vehicle that displays a light-focusing mark, comprising a light source, an optical element that focuses light emitted from the light source in the form of a light-focusing mark on an irradiation surface, and a lamp controller that controls the turning on, turning off, or blinking of the light source, wherein a deflection surface that focuses the light of the optical element is divided into a plurality of regions, and light emitted through each region on the deflection surface of the optical element forms a partial irradiation image on the irradiation surface corresponding to each region on the deflection surface, and at least one light-focusing mark is formed on the irradiation surface by combining each of the partial irradiation images, and each of the divided regions forms a different partial irradiation image on the irradiation surface, and the shape of the partial irradiation image is linear, with each line having a different slope, and the optical element focuses the light emitted from the light source on a specific region on the irradiation surface to form an irradiation image on the irradiation surface.

[0018] Furthermore, in the vehicle of the present invention, the irradiation surface is located at a finite distance from the optical element. [Effects of the Invention]

[0019] According to the present invention, a complex pattern can be displayed with good light utilization efficiency, at low cost, and with a simple configuration. The problems, configurations, and effects other than those described above will become clear from the following description of the embodiments. It will be revealed. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1A is an explanatory diagram for explaining an example of use of the optical device of the first embodiment, and FIG. 1B is an enlarged view of part B of FIG. [Figure 2] FIG. 1A is a configuration diagram of an optical device according to a first embodiment, and FIG. 1B is a cross-sectional view taken along the line AA′ of FIG. [Figure 3] FIG. 2 is an explanatory diagram for explaining a coordinate system used to explain the configuration of the optical device according to the first embodiment. [Figure 4]5(a) to 5(d) are explanatory diagrams for explaining the positional relationship between the effective area of ​​the reflecting surface of the reflector and the light source in the first embodiment. [Figure 5] 10 is point sequence data of an effective area of ​​a first area of ​​the reflecting surface of the reflector of the first embodiment. [Figure 6] 10 is point sequence data of an effective area of ​​a second area of ​​the reflecting surface of the reflector of the first embodiment. [Figure 7] FIG. 1(a) shows a simulation result of an illumination image by a first region of the reflecting surface of the reflector of the first embodiment, FIG. 1(b) shows a simulation result of an illumination image by a second region of the reflecting surface of the reflector of the first embodiment, and FIG. 1(c) shows a simulation result of an illumination image by the reflecting surface of the reflector of the first embodiment. [Figure 8] 10A is a diagram showing the configuration of an optical device according to a second embodiment, and FIG. 10B is a cross-sectional view taken along the line AA′ of FIG. [Figure 9] FIG. 10 is an explanatory diagram for explaining a coordinate system used to explain the configuration of an optical device according to a second embodiment. [Figure 10] 10(a) to 10(d) are explanatory diagrams for explaining the positional relationship between the effective area of ​​the light exit surface of the lens of the second embodiment and the light source. [Figure 11] 10 is point sequence data of an effective area of ​​a first region of the exit surface of a lens according to the second embodiment. [Figure 12] 10 is point sequence data of an effective area of ​​a second region of the exit surface of the lens of the second embodiment. [Figure 13] FIG. 10A shows the simulation results of the illumination image by a first region of the exit surface of the lens of the second embodiment, FIG. 10B shows the simulation results of the illumination image by a second region of the exit surface of the lens of the second embodiment, and FIG. 10C shows the simulation results of the illumination image by the exit surface of the lens of the second embodiment. [Figure 14] 10A is an explanatory diagram for explaining an outline of the planned traveling direction display by the traveling direction display device of the third embodiment, and FIG. 10B is a table showing the arrangement position and display content of each optical device. [Figure 15]FIG. 10 is a configuration diagram of a control system of a traveling direction display device according to a third embodiment. [Figure 16] FIG. 11 is an explanatory diagram for explaining an example of a blind spot in the third embodiment. [Figure 17] FIG. 10 is a functional block diagram of a lighting fixture controller according to a third embodiment. [Figure 18] 10 is a flowchart of a lighting control process by a lighting fixture controller according to a third embodiment. [Figure 19] 10A and 10B are diagrams illustrating simulation results of an image illuminated by the first forward movement optical device of the third embodiment. [Figure 20] 10(a) to 10(d) are explanatory diagrams for explaining the positional relationship between the light source and the effective area of ​​the reflecting surface of the reflector of the second forward movement optical device of the third embodiment. [Figure 21] 10 is point sequence data of an effective area of ​​a first area of ​​a reflecting surface of a reflector of a second forward movement optical device of a third embodiment. [Figure 22] 10 is point sequence data of an effective area of ​​a second area of ​​a reflecting surface of a reflector of a second forward movement optical device of a third embodiment. [Figure 23] 13A and 13B are diagrams illustrating simulation results of an image illuminated by the second forward movement optical device of the third embodiment. [Figure 24] 10(a) to 10(d) are explanatory diagrams for explaining the positional relationship between the effective area of ​​the reflecting surface of the reflector of the first right-turn optical device of the third embodiment and the light source. [Figure 25] 10 is point sequence data of an effective area of ​​a first area of ​​a reflecting surface of a reflector of a first right-turn optical device of a third embodiment. [Figure 26] 10 is point sequence data of an effective area of ​​a second area of ​​a reflecting surface of a reflector of a first right-turn optical device of a third embodiment. [Figure 27] (a) is a figure showing the simulation results of the image illuminated by the first right-turn optical device of the third embodiment, and (b) is a figure showing the simulation results of the image illuminated by the second right-turn optical device of the third embodiment. [Figure 28]10(a) to 10(d) are explanatory diagrams for explaining the positional relationship between the light source and the effective area of ​​the reflecting surface of the reflector of the second right-turn optical device of the third embodiment. [Figure 29] 10 is point sequence data of an effective area of ​​a first area of ​​a reflecting surface of a reflector of a second right-turn optical device of a third embodiment. [Figure 30] 10 is point sequence data of an effective area of ​​a second area of ​​a reflecting surface of a reflector of a second right-turn optical device of a third embodiment. [Figure 31] 10(a) to 10(f) are simulation results of display examples using the travel direction display device of the third embodiment. [Figure 32] 10 is an explanatory diagram for explaining a coordinate system used to explain the configuration of the optical device of Modification 1. FIG. [Figure 33] 10(a) to 10(d) are explanatory diagrams for explaining the positional relationship between the effective area of ​​the reflecting surface of the reflector of the first modification and the light source. [Figure 34] 10 is point sequence data of an effective area of ​​a first area of ​​a reflecting surface of a reflector of Modification 1. [Figure 35] 10 is point sequence data of an effective area of ​​a second area of ​​a reflecting surface of a reflector of Modification 4. [Figure 36] 10 is point sequence data of an effective area of ​​a third area of ​​the reflecting surface of the reflector of the first modified example. [Figure 37] (a) is a figure showing the simulation results of the illumination image by the first region of the reflecting surface of the reflector of modified example 1, (b) is a figure showing the simulation results of the illumination image by the second region of the reflecting surface of the reflector of modified example 1, (c) is a figure showing the simulation results of the illumination image by the third region of the reflecting surface of the reflector of modified example 1, and (d) is a figure showing the simulation results of the illumination image by the reflecting surface of the reflector of modified example 1. [Figure 38] 10(a) to 10(d) are explanatory diagrams for explaining the positional relationship between the effective area of ​​the reflecting surface of the reflector of the second modification and the light source. [Figure 39] 10 is point sequence data of an effective area of ​​a first area of ​​a reflecting surface of a reflector of Modification 2. [Figure 40]10 is point sequence data of an effective area of ​​a second area of ​​a reflecting surface of a reflector of Modification 2. [Figure 41] 10A and 10B are diagrams showing simulation results of an image illuminated by a reflecting surface of a reflector according to Modification 2. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In all drawings for the purpose of this specification, the same parts are generally designated by the same reference numerals, and repeated explanations are omitted. On the other hand, when describing a part with a reference numeral in one drawing, the same reference numeral may be omitted when describing another drawing. Although not shown again, the same reference numerals may be used to refer to these components.

[0022] First Embodiment An optical device according to a first embodiment of the present invention will be described. FIG. 1(a) shows an example of use of the optical device 100 of the present embodiment. 1(b) is a perspective view of the vehicle 200 in which the vehicle is mounted, and FIG. 1(b) is a perspective view of the area enclosed by the dashed line in FIG. 1(a). This is an enlarged view of B.

[0023] As shown in FIGS. 1(a) and 1(b), the optical device 100 of this embodiment includes, for example, The vehicle 200 is mounted on the vehicle 200, and the vehicle 200 is projected from a predetermined height onto a road surface 300 or the like in front of the vehicle 200. An irradiation image (light-collecting pattern, light-collecting mark) 400 is formed. 00 is not limited to vehicle use.

[0024] [Optical device] 2(a) and 2(b) are diagrams illustrating the configuration of the optical device 100 according to this embodiment. FIG. 2(a) is a front view of the optical device 100 of this embodiment, and FIG. 2(b) is a view of the optical device 100 of FIG. 2(a). A' cross-sectional view.

[0025] Here, as shown in the figure, the left-right direction in FIG. 2(a) is the left-right direction, and the up-down direction in FIG. In the following description, the left-right direction in FIG. 2(b) is referred to as the front-rear direction, and the up-down direction is referred to as the up-down direction. Up (Up), Down (Dw), Forward (Fr), Backward (Bk), Left (Le), It is called the right side (Ri).

[0026] The optical device 100 of this embodiment includes a substrate 111, a light source (LED) 110, and a reflector. 120, a support member 130, a cover 140, a body 150, and a lighting control circuit 160. , and is equipped with.

[0027] The body 150 has, for example, a box-like shape with an opening at the front. The reflector 150 has optical transparency and is provided to close the opening of the body 150. The light reflected by the reflector 120 is emitted to the outside of the optical device 100 through the cover 140. .

[0028] The light source 110 is, for example, an LED (Light Emitting Diode). The light source 110 is mounted on a substrate 111 provided on a support member 130. The light source is not limited to LEDs. For example, organic EL (Electro Luminescence) The substrate 111 may be, for example, a support member 130 in the left-right direction and in the vicinity of the front tip.

[0029] The reflector 120 reflects light emitted from the light source 110 disposed at a predetermined position onto a predetermined surface ( It is an optical element that focuses light onto a specific area on the surface to be illuminated, forming an illuminated image on the surface. The irradiation surface is, for example, as shown in FIG. 1(b), In this case, the road surface 300 is in front of the vehicle 200, and the obtained illumination image 400 is The shape indicates a specific purpose, for example, the intended direction of travel.

[0030] The reflector 120 has a deflection surface that condenses the light emitted from the light source 110. The reflector 120 has a reflecting surface 121. is divided into a plurality of regions. Each divided region (divided region) has an irradiated surface. The illumination image 400 is formed by combining the respective partial illumination images. Each divided area has an aspherical or free-form surface shape.

[0031] The shape of the reflecting surface 121 of the reflector 120 is determined depending on the required illumination image 400 and illuminance distribution. The position of the light source 110, the shape of the reflecting surface 121 of the reflector 120, etc. The relationship between the area on the irradiation surface where the irradiation image is formed and the area on the irradiation surface where the irradiation image is formed will be described in detail later.

[0032] The reflector 120 is made of, for example, resin, glass, or metal. For example, an aluminum film is vapor-deposited on the surface 121. A reflection-enhancing film may also be applied.

[0033] The reflector 120 is fixed onto a support member 130 by, for example, fixing screws 131. At this time, the light source 110 is positioned above the light source 110 and within the range of the light source 110's directivity angle. For example, the position relative to the light source 110 may be fixed by a positioning pin 132 or the like.

[0034] The lighting control circuit 160 controls the lighting of the light source 110. The lighting control circuit 160 includes, for example, , receives a control signal from the outside, and controls the lighting of the light source 110 in accordance with the control signal.

[0035] The lighting control circuit 160 itself is a central processing unit (CPU). Unit), RAM (Random Access Memory), ROM (Rea ROM (ROM Only Memory) is provided, and the CPU executes programs stored in the ROM in advance. The lighting of the light source 110 may be controlled by loading it into memory and executing it.

[0036] The support member 130 is fixed to the surface of the box-shaped body 150 facing the cover 140 by a fixing screw. The support member 130 is made of, for example, metal. The support member 130 may be provided with a cooling fin. The reflector 120 may be supported by a bracket, so that the position and angle of the reflector 120 can be adjusted.

[0037] Light source 110, reflector 120, substrate 111, support member 130, and lighting control circuit 16 0 is disposed in a lamp chamber 151 formed inside the body 150 and the cover 140.

[0038] [Reflector Shape Details] Next, the shape of the effective area of ​​the reflecting surface 121 of the reflector 120 of this embodiment and the light source 110 and the irradiation image 400 displayed on the irradiation surface 301 will be described.

[0039] In this embodiment, a local coordinate system 911 (x', y', z') shown in FIG. 3 is set. Hereinafter, this will be simply referred to as coordinate system 911.

[0040] In the coordinate system 911, the direction perpendicular to the irradiation surface 301 is the y'-axis direction. The coordinate value of 1 in the y'-axis direction is set to -600 mm. The 600mm position is the origin O.

[0041] Also, on a plane including the y′ axis and the center of the light emitting area of ​​the light source 110, a line parallel to the irradiation surface 301 is The direction perpendicular to the y'-z' plane is the z'-axis direction.

[0042] Here, the light source 110 has, for example, light emitting regions in the x'-axis direction and the z'-axis direction. 1.15mm LED (e.g., Nichia NCSW170C / NCSA170C) ) is used. In addition, a pattern display area 401 on the irradiation surface 301 is displayed as an irradiation image 400. For example, the shape of the reflecting surface 121 when forming an arrowhead shape is as follows: The pattern display area 401 is a region on the irradiation surface 301 in the z'-axis direction. The range is 1500mm to 2000mm, and the range is -500mm to 500mm in the x'-axis direction. do.

[0043] 4(a) to 4(d) show the effective area of ​​the reflecting surface 121 of the reflector 120 and 4A and 4B are diagrams showing the positional relationship of the light source 110. FIG. 4A is a perspective view, and FIG. 4B is a diagram showing the positional relationship of the light source 110. 4(c) is a x'-y' plan view, and FIG. 4(d) is a x'-z' plan view. .

[0044] In this coordinate system 911, the light source 110 has a light emitting area whose center coordinates are (0, -7.5, 20 ), and are arranged so that the central axis of the beam angle is aligned with the y'-axis.

[0045] As shown in FIG. 4(c), the reflecting surfaces 121 of the reflector 120 are different. The first region 121a has a free-form surface shape, and the second region 121b has a free-form surface shape. 21a and the second region 121b are arranged such that the reflecting surface 121 of the reflector 120 is located in the coordinate system 911. It is divided by a plane that passes through the origin and is parallel to the z'-y' plane. The area on the right side is the second area 121b.

[0046] The first area 121a is the area in the pattern display area 401 where the x' coordinate is from -500 mm to 0 The first irradiation image, which is a partial irradiation image, is formed in an area of ​​x mm. 'A second irradiation image, which is a partial irradiation image, is formed in the area from coordinates 0 mm to 500 mm.

[0047] The free-form surfaces of the first area 121a and the second area 121b are, for example, different quintic surfaces. and 5th order NURBS (Non-Uniform Rational B-Splin e) A curved surface. This free-form surface shape allows the light from the light source 110 to be reflected by the first region 121a. a first irradiation image on the irradiation surface 301 obtained by reflecting the light from the first region 121b; In combination with the second irradiation image on the irradiation surface 301, an arrowhead shape is displayed on the irradiation surface 301. The free-form surface is not limited to 5th order and 5th order NURBS surfaces, A free-form surface suitable for displaying the desired light-focusing mark (illumination image) is selected.

[0048] The free-form surface shapes of the first region 121a and the second region 121b are defined as follows: The point sequence data is shown in Table 511 of FIG. 5 and Table 512 of FIG. 6. , the direction cosines (l', m', n') of each position (x', y', z') in the coordinate system 911 are ').

[0049] As shown in FIGS. 5 and 6, the boundary area between the first area 121a and the second area 121b At each point, the values ​​of the direction cosines of the first region 121a and the second region 121b are respectively For example, the direction cosine at (0, 0, -0.00898) is In a, it is (-0.04226, -0.33936, -0.939708), and in the second region In region 121b, it is (-0.042256, -0.33936, 0.939708). That is, the first region 121a and the second region 121b are discontinuous. The region 121a and the second region 121b have different free-form surface shapes.

[0050] Here, a ray tracing scenario of the illuminance distribution on the irradiation surface 301 obtained by the optical device 100 with the above specifications is shown. The simulation results are shown in FIGS. 7(a) to 7(c). Here, the light source 110 is Among the LEDs with a light-emitting area, Nichia NCDW170C (350lm) was used. Ta.

[0051] FIG. 7(a) shows a diagram of a reflection region obtained by reflecting light emitted from the light source 110 on the first region 121a. , which shows the illuminance distribution (first irradiation image) 411a of the pattern display area 401 on the irradiation surface 301. FIG. 7(b) shows a pattern on the irradiation surface 301 obtained by reflection from the second region 121b. 7(c) shows the illuminance distribution (second irradiation image) 411b of the first region 401. 12 shows an illuminance distribution (illumination image; light-collecting mark) 411 due to the first region 121a and the second region 121b.

[0052] As shown in FIG. 7(c), according to the optical device 100 of this embodiment, the particles on the irradiation surface 301 An arrowhead pattern (light collection mark 411) can be displayed in the turn display area 401. do.

[0053] As described above, according to this embodiment, the reflecting surface 121 has a plurality of different free-form surface shapes. A single reflector 120 having an area of ​​120 and a single light source is used to form a shape that indicates a direction. An arrowhead pattern can be formed on the desired illumination surface. There is no need to use an array or the like to control lighting or to use multiple optical systems. It is possible to realize an optical device that can form a shape showing a specific intention on a desired surface with a simple structure.

[0054] Furthermore, according to this embodiment, a shape indicating a specific intention is formed on the reflecting surface 12 of the reflector 120. This is realized by the shape of the lens 1. In other words, the irradiation image is not formed using a mask or the like. Therefore, all the luminous flux reaching the reflector 120 from the light source 110 can be used to form the illumination image 400. Therefore, the light utilization efficiency is good, and as a result, an optical device with a high energy saving effect can be realized. .

[0055] Second Embodiment [Optical device] An optical device according to a second embodiment of the present invention will be described. FIG. 8(a) is a configuration diagram of the optical device 101 of the present embodiment. 8(b) is a front view, and FIG. 8(b) is a cross-sectional view taken along the line AA' in FIG. 8(a).

[0056] In this embodiment, the optical device 101 is also similar to the first embodiment, for example, The projector 200 projects an image 40 onto a road surface 300 in the vicinity of the vehicle 200 from a predetermined height. 0. The optical device 101 of this embodiment is not limited to being mounted on a vehicle.

[0057] In the following description of the optical device 101 of this embodiment, the optical device 100 of the first embodiment The same components are denoted by the same reference numerals and will not be described again.

[0058] As shown in the figure, the optical device 101 of this embodiment includes a substrate 111, a light source 110, and a lens. The lamp includes a lens 170, a support member 130, a cover 140, a body 150, and a lighting control circuit 16. 0 and.

[0059] The light source 110 is mounted on a substrate 111 provided on a support member 130. 11 is disposed at approximately the center of the support member 130 in the vertical and horizontal directions. , for example, in the lamp chamber 151, a space 15 2 and is supported by fixing screws 131 and the like.

[0060] The lighting control circuit 160 is disposed, for example, in the space 152 .

[0061] The lens 170 reflects the light emitted from the light source 110 onto a predetermined pattern surface 302. The lens 170 is an optical element that focuses light onto a display area 402 to form an illumination image 400. For example, transparent resins such as acrylic, polycarbonate, and polyolefin, and transparent glass. The incident surface 172 and the exit surface 171 of the lens 170 are coated with an anti-reflection coating. It may be coated.

[0062] The lens 170 is disposed in front of the light source 110 and reflects the light emitted from the light source 110. The light is incident on the incident surface 172 of the light source 170 and exits from the exit surface 171. At least one of the light emitting surfaces 171 is formed as a deflection surface that condenses the light emitted from the light source 110. The deflection surface of the lens 170 is divided into a plurality of regions. Each of the divided areas forms a different partial illumination image on the illumination surface 302. The illumination image 400 is Each divided area is formed by combining each partial irradiation image. Each divided area has an aspherical or free-form surface shape. Has.

[0063] The shape of the deflecting surface of the lens 170 can be adjusted depending on the required illumination image 400, illuminance distribution, etc. The position of the light source 110, the shape of the deflection surface of the lens 170, and the pattern on the illumination surface 302 are determined. The relationship with the turn display area 401 will be described in detail later.

[0064] The lens 170 is fixed onto the support member 130 with, for example, fixing screws (not shown). At this time, the lens 170 is arranged so that the deflection surface is positioned within the range of the directivity angle of the light source 110. can be.

[0065] The light source 110, the lens 170, the substrate 111, the support member 130, and the lighting control circuit 160 The lamp is disposed in a lamp chamber 151 formed inside the body 150 and the cover 140.

[0066] [Lens shape details] Next, the shape of the effective area of ​​the light collecting surface of the lens 170 of this embodiment, the light source 110, and the irradiation surface An example of the relationship between the projection image 400 displayed on the exit surface 171 and the projection image 400 displayed on the exit surface 171 will be described. is a deflection surface having a free-form shape, and the incident surface 172 is a flat surface. In this example, the lens 170 is made of polycarbonate. There are.

[0067] In this embodiment, a local coordinate system 912 (x'', y'', z'') shown in FIG. 9 is set. Hereinafter, this will be simply referred to as coordinate system 912.

[0068] In the coordinate system 912, a point Rn on the irradiation surface 302 is 600 m in a direction perpendicular to the irradiation surface 302. The origin O is set at a point that is 2 m away from the origin O. The direction toward point Rz at 000 mm is defined as the z"-axis direction.

[0069] On a plane perpendicular to the z″ axis, the direction passing through the origin O and parallel to the irradiation surface 302 is defined as the x″ axis direction, The direction perpendicular to the x''-z'' plane is defined as the y''-axis direction.

[0070] Here, the light source 110 has, for example, light emitting regions in the x"-axis direction and the y"-axis direction. 1.15mm LED (e.g., Nichia NCSW170C / NCSA170C) ) is used. In addition, the pattern display area 402 on the irradiation surface 302 is displayed as an irradiation image 400. For example, the shape of the exit surface 171 when forming an arrowhead shape is as follows: The pattern display area 402 is a region from Rn to Rz on the irradiation surface 302. The range is 1500mm to 2000mm in the direction towards the axis, and -500mm to 500mm in the x'-axis direction. The range is mm.

[0071] 10(a) to 10(d) show the effective area and the effective area of ​​the exit surface 171 of the lens 170, respectively. 10(a) is a perspective view, and FIG. 10(b) is a diagram showing the positional relationship of the light source 110. 10(c) is the x"-y" plane view, and FIG. 10(d) is the x"-z" plane view. Figure.

[0072] In this coordinate system 912, the light source 110 has a light emitting area center coordinates of (0, 0, -20), The beam is positioned so that the central axis of the beam angle is aligned with the z″ axis.

[0073] As shown in FIG. 10(c), the exit surface 171 of the lens 170 of this embodiment has a first region 1 The first region 171a and the second region 171b are The light output surface 171 is divided by a plane that passes through the center of the light emitting area of ​​the light source 110 and is parallel to the z″-y″ plane. In the drawing, the area on the left side is the first area 171a, and the area on the right side is the second area 171b. It is 1b.

[0074] The first area 171a is the area in the pattern display area 402 where the x-coordinate is from -500 mm to 0 A first irradiation image, which is a partial irradiation image, is formed in an area of ​​171 mm. A second irradiation image, which is a partial irradiation image, is formed in the region where the x" coordinate is from 0 mm to 500 mm.

[0075] The free-form surfaces of the first area 171a and the second area 171b are, for example, different quintic surfaces. and 5th order NURBS (Non-Uniform Rational B-Splin e) A curved surface. This free-form surface shape allows the light from the light source 110 to be refracted in the first region 171a. a first irradiation image on the irradiation surface 302 obtained by reflecting the light from the first region 171b; By combining the second irradiation image on the irradiation surface 302, an arrowhead shape is projected onto the irradiation surface 302. The free-form surface is not limited to a 5th order or 5th order NURBS surface, and may be formed as desired. A free-form surface suitable for displaying the desired condensed light mark (illumination image) is selected.

[0076] The free-form surface shapes of the first region 171a and the second region 171b are The point sequence data is shown in Table 521 of FIG. 11 and Table 522 of FIG. 12. As data, the direction cosines (l", m") of each position (x", y", z") in the coordinate system 912 are , n" indicates

[0077] As shown in FIGS. 11 and 12, the boundary between the first region 171a and the second region 171b At each point in the region, the values ​​of the direction cosines of the first region 171a and the second region 171b are For example, the direction cosines at (0, -10, 6.021816) are In region 171a, it is (0.069813, -0.55406, 0.829546), In the second region 171b, (-0.06981, -0.55406, 0.829546) That is, the first region 171a and the second region 171b are discontinuous. The first region 121a and the second region 121b have different free-form surface shapes.

[0078] As mentioned above, the incident surface 172 is a flat surface, and the effective area is defined by four vertices (-10, -10, 0), (-10, 10, 0), (10, 10, 0), (10, -10, 0) It is a rectangular plane.

[0079] Here, a ray tracing scenario of the illuminance distribution on the irradiation surface 302 obtained by the optical device 101 with the above specifications is shown. The simulation results are shown in Fig. 13(a) to Fig. 13(c). Here, the light source 110 is Here, the light source 110 is an LED having the above-mentioned light-emitting region, such as nichia NCDW The vertical axis in Fig. 13(a) to Fig. 13(c) is the irradiated surface 3 This is the distance from Rn in the direction from Rn to Rz on O2 (z''' axis).

[0080] FIG. 13(a) shows a diagram of a reflection region obtained by refracting light emitted from the light source 110 in the first region 171a. , which shows the illuminance distribution (first irradiation image) 412a of the pattern display area 402 on the irradiation surface 302. FIG. 13(b) shows a pattern on the irradiation surface 302 obtained by refraction in the second region 171b. 13(c) shows the illuminance distribution (second irradiation image) 412b of the first region 402. 17 shows an illuminance distribution (light collection mark) 412 by the first region 171a and the second region 171b.

[0081] As shown in FIG. 13(c), according to the optical device 101 of this embodiment, An arrowhead pattern (light collection mark 412) can be displayed in the pattern display area 402. Cut.

[0082] As described above, according to this embodiment, similarly to the first embodiment, the deflection surface (exit surface 17 1) is a lens 170 having a plurality of different free-form surface shaped regions and a light source. As a result, an arrowhead pattern, which is a shape indicating a direction, can be formed on the desired irradiation surface 302. That is, lighting can be controlled by using a light source array arranged in the shape of a condensing mark, or by using multiple optical systems. Therefore, it is possible to form a specific shape on a desired surface with a simple structure. This makes it possible to realize an optical device that can achieve this.

[0083] Furthermore, according to this embodiment, a shape indicating a specific intention can be formed on the deflection surface (exit surface) of the lens 170. 171) is realized by the shape of the irradiated area. In other words, the irradiated image is not formed using a mask or the like. Therefore, the entire light flux reaching the lens 170 from the light source 110 is used to form the illumination image 400. Therefore, the light utilization efficiency is good, and as a result, an optical device with a high energy saving effect can be realized. do.

[0084] In this embodiment, the shape of the exit surface 171 of the lens 170 is a free-form surface. Although the case where the deflection surface is used has been described as an example, the present invention is not limited to this. The surface may be realized by the entrance surface 172 of the lens 170, or by the entrance surface 172 and the exit surface 17 This may be achieved by using both sides of 1.

[0085] <Third embodiment> Next, a third embodiment of the present invention will be described. The sensor device 100 or 101 is mounted on the vehicle 200, and is positioned in front of the vehicle 200 depending on the intended direction of travel. A light-collecting mark 400 indicating the planned traveling direction of the vehicle 200 is displayed on the road surface 300 around the vehicle. In the present embodiment, the optical device 100 is used to detect a road surface 300 in front of the vehicle 200. An example in which the light collection mark 400 is displayed will be described.

[0086] [Direction display device] 14(a) and 14(b) show the traveling direction displayed by the traveling direction display device 600 of this embodiment. FIG. 10 is a diagram for explaining an outline of a planned direction display.

[0087] As shown in the figure, the traveling direction display device 600 of this embodiment is provided with six The optical device 100 is provided.

[0088] The six optical devices 100 are arranged, for example, at the center of the front of the vehicle 200 as shown in FIG. 14(a). Two of the optical devices 100 are mounted on the front left and front right sides. is embedded in, for example, a bumper attached to the front of a vehicle.

[0089] Hereinafter, when it is necessary to distinguish between them, the two optical devices 100 mounted in the front center of the vehicle will be referred to as The forward optical system 100F is collectively referred to as a first forward optical system 100Fa and a second forward optical system 100Fb. The forward optical device 100Fb is a combination of two optical devices 100 mounted on the front left side of the vehicle. , left-turn optical device 100L, a first left-turn optical device 100La, a second left-turn optical device 100L, respectively. The device 100Lb is a device for turning right, which is configured by combining two optical devices 100 mounted on the front right side of the vehicle. optical device 100R, a first right-turn optical device 100Ra, and a second right-turn optical device 10 0Rb, respectively.

[0090] The first forward movement optical device 100Fa transmits the forward movement pattern 430a to the second forward movement optical device 10 0Fb indicates a forward movement pattern 430b, and the first left-turn optical device 100La indicates a left-turn pattern 4 40a, the second left-turn optical device 100Lb uses the left-turn pattern 440b, and the first right-turn optical device 100Lb uses the left-turn pattern 440b. The right turn optical device 100Ra has a right turn pattern 450a, and the second right turn optical device 100Rb has a right turn pattern 450b. The turns 450b are displayed on the road surface 300 as light-collecting marks 400, respectively.

[0091] As shown in FIG. 14(a), a forward optical device 100F, a left-turn optical device 100L, and a right-turn optical device 100R are provided. Among the light-collecting marks irradiated by the vehicle optical device 100R, the light-collecting marks farther from the vehicle 200 (front The colors of the forward turn pattern 430a, left turn pattern 440a, and right turn pattern 450a) and the Light-collecting mark (forward pattern 430b, left turn pattern 440b, right turn pattern 450b) In other words, the color of the light collecting mark far from the vehicle on which the six optical devices 100 are mounted is changed. The color of the mark and the nearby light collection mark should be different.

[0092] The left turn patterns 440a and 440b are for vehicles that are perpendicular to the lane in which the vehicle 200 is located. Similarly, right turn patterns 450a and 450b are arranged in the direction of travel of the vehicles on the line. 50b is also arranged in the direction of travel of a vehicle in a lane perpendicular to the lane in which the vehicle 200 is present. Arrange it as follows.

[0093] The installation position of each optical device 100, the shape, color, and display position of each light collection mark 400 are shown in FIG. 14(b) shows the reflector 120 that realizes each light collection mark 400. The details of the shape will be described later.

[0094] FIG. 15 is a block diagram of the control system of the traveling direction display device 600 of this embodiment. Thus, the driving direction display device 600 includes six optical devices 100 and a lighting controller 610. And, it is equipped with.

[0095] The lighting controller 610 is a control unit that instructs the lighting control circuit 160 of the optical device 100 to turn on the light. The lighting controller 610 outputs a signal that is the basis for calculating the control signal. Various state detection devices are connected to the system.

[0096] The state detection device detects the behavior of the vehicle 200 and information on the environment around the vehicle 200, and The detection result is output as a detection signal to the controller 610. For example, a turn signal switch 601, a road surface analysis device 602, a vehicle speed sensor 603, a position A position information acquisition device 604 and the like are connected. In addition, a steering sensor, a reverse gear sensor, and the like are connected. etc. may be connected.

[0097] The direction indicator switch 601 outputs an operation signal (direction indicator) when the direction indicator is turned on. The direction indication signal is output to the lighting controller 610. The direction indication signal also includes information on the indicated direction. It can be enjoyed.

[0098] The road surface analyzer 602 analyzes the condition of the road surface 300 and transmits the results to the lighting controller 61. In this embodiment, for example, a light source, a polarization camera, and a camera that projects light from the light source onto the road surface are used. and an analysis unit that analyzes the image of the irradiation state acquired by the polarization camera. For example, a signal (road surface signal) specifying the condition of the road surface 300 is output from the lighting controller 610. In this embodiment, the road surface signal includes signals indicating whether the road is dry, wet, frozen, etc. The information that can identify the state of the road surface 300 includes, for example, the reflectance of the road surface 300. .

[0099] The vehicle speed sensor 603 detects the running speed (vehicle speed) of the vehicle itself and outputs the vehicle speed signal to the lamp control unit. For example, a pulse signal proportional to the rotation speed of the axle is generated and output to the roller 610. The vehicle speed is detected based on the number of signals.

[0100] The position information acquisition device 604 outputs the current position information of the vehicle and map information of the vicinity. The position information acquisition device 604 acquires information from a navigation satellite such as a GPS and a vehicle speed sensor 603. The current position of the vehicle is calculated using the map information. The map information is stored in advance. The acquisition device 604 may be, for example, a navigation device.

[0101] The lighting controller 610 is a CAN (Controller Area Network) Each status detection device is connected to multiple communication lines such as a serial communication line, a wireless communication network, etc. The device may be connected to a

[0102] The lighting controller 610 controls the six optical devices in response to signals from the above-mentioned state detection devices. The lighting or blinking of each of the 100 lights can be controlled independently.

[0103] The lighting controller 610 includes a CPU 611, a RAM 612, a ROM 613, and an input / output and an input / output (I / O) interface 614. These are connected by an internal bus. .

[0104] Some or all of the functions realized by the lighting controller 610 are implemented by the CPU 611 in the ROM. The program (software) stored in 613 is loaded into RAM 612 and executed. In addition, some or all of the functions are implemented in LSI (Large Sc ale Integration), ASIC (Application Specification) Even if it is realized by hardware such as an IC Integrated Circuit It may also be realized by a combination of software and hardware. Information and data required for processing are stored in the ROM 613 and RAM 612 .

[0105] The traveling direction display device 600 of this embodiment turns on and off the optical device 100 depending on the vehicle speed. Furthermore, the lighting illuminance of the optical device 100 is controlled according to the condition of the road surface 300. Furthermore, the optical device 100 to be turned on is determined depending on the direction in which the vehicle 200 is expected to travel.

[0106] Specifically, the optical device 100 is turned on when the vehicle 200 is stopped or moving slowly. At this time, the forward patterns 430a and 430b are usually displayed. When the vehicle receives the direction signal, the vehicle will turn left according to the direction pattern specified by the direction signal (left turn pattern 440a, 440b or right turn patterns 450a, 450b) are illuminated. do.

[0107] On the other hand, the illuminance of the optical device 100 is changed depending on the condition of the road surface 300. For example, The reflectivity of the road surface 300 is high, and when the light-collecting mark 400 is displayed on the road surface 300, the driver of another vehicle If the lights are causing dazzle, turn them off or reduce the brightness.

[0108] When the luminous flux of the light source 110 can be controlled, the illuminance is determined by adjusting the luminous flux of the light source 110 according to the reflectance. The amount of luminous flux can be reduced by, for example, controlling the current value. Alternatively, pulse width modulation (PWM) Dimming using pulse width modulation may be performed by controlling the light source 110 using PWM. By synchronizing with the traffic light and flashing it at high speed at a frequency that makes it invisible to people, the illumination of the light-focusing mark 400 In this case, the ratio of the time that the light is on within one cycle (duty By reducing the ratio, the illuminance of the light-collecting mark 400 can be further reduced.

[0109] For example, the optical device 100 may be caused to blink in synchronization with the blinking of a turn signal. In this case, the blinking control of the light source 110 at a cycle where people are not visible is repeated at the cycle of blinking of the turn signal. By repeating this process, the condenser mark 400 can be displayed blinking even when the illumination is reduced. be.

[0110] Furthermore, the lighting controller 610 of this embodiment is configured to detect whether the vehicle is being killed by the driver of another vehicle. The forward optical device 100F may be configured to be illuminated only when the vehicle is positioned at a corner. Examples of blind spots include intersections, T-junctions, etc., as shown in FIG.

[0111] The case where these controls are realized will be described as an example. The lighting controller 610 of this embodiment is a functional block diagram of the lighting controller 610 shown in FIG. As shown in FIG. 6, the illumination determination unit 621, the direction determination unit 622, and the vehicle position determination unit 623 are provided. do.

[0112] The illuminance determination unit 621 determines whether or not to turn on the optical device 100, and if so, the illuminance. The result of this determination is output to the direction determination unit 622.

[0113] In this embodiment, the vehicle speed is determined by signals from the vehicle speed sensor 603 and the road surface analysis device 602. When a signal indicating that the vehicle speed is below a predetermined speed is received from the vehicle speed sensor 603, If the road surface signal received from the road surface analysis device 602 is included in The target illuminance value (target illuminance value) is determined based on the reflectance. Based on this, for example, the duty ratio in pulse width modulation control is determined. Information on the correspondence between the value and the duty ratio is stored in the ROM 613 in advance.

[0114] When the illuminance determination unit 621 determines that the optical device 1 should be turned on, the direction determination unit 622 determines which optical device 1 should be turned on. 00. The optical device 100 to be turned on is determined by the direction indication signal.

[0115] When the direction determining unit 622 receives a direction indication signal indicating a right turn, the right turn optical device 10 Also, when a turn signal meaning a left turn is received, the system determines that the 0R should be turned on. In other cases, the forward optical device 100L is turned on. Decide to turn on F.

[0116] The vehicle position determination unit 623 determines whether the vehicle is in a predetermined blind spot or not, and to the direction determination unit 622. The vehicle position determination unit 623 receives the information from the position information acquisition device 604. The system receives the current position information of the vehicle and map information, and determines the current position of the vehicle from the driver of another vehicle. Determine whether the location is in a blind spot from the driver of another vehicle. The information to be used is determined in advance and stored in the ROM 613.

[0117] FIG. 18 shows an example of the flow of lighting control processing by the lighting fixture controller 610 of this embodiment. This is a processing flow for the lighting instruction signal. The lighting control circuit 160 of the optical device 100 lights up the light source 110 only while the light source 110 is turned on.

[0118] First, the illuminance determining unit 621 determines the vehicle speed based on the vehicle speed signal received from the vehicle speed sensor 603. It is determined whether or not the value is less than a fixed value (step S1101).

[0119] If the vehicle speed is equal to or greater than the predetermined value, the process ends.

[0120] If the vehicle speed is less than a predetermined value, the illuminance determination unit 621 determines the road surface Based on the signal, it is determined whether the reflectance of the road surface 300 is less than a predetermined value (step S11 02).

[0121] When the reflectance is less than a predetermined value, the illuminance determining unit 621 determines a target illuminance value of the light collection mark 400. The duty ratio (light source duty ratio) in pulse width modulation control is determined (step Furthermore, the illuminance determination unit 621 generates a lighting signal including information on the light source duty ratio. On the other hand, if the reflectance is equal to or greater than a predetermined value, the result is output to the direction determining unit 622 (step S1104). If so, the process ends.

[0122] When the direction determination unit 622 receives the lighting signal, it determines whether it has received a direction indication signal indicating a right turn. It is determined whether or not (step S1105).

[0123] When a direction indication signal indicating a right turn is received, the direction determination unit 622 determines whether the right turn optical device 1 A lighting instruction signal is output to 00R (step S1106), and the process ends.

[0124] When the direction determination unit 622 does not receive a direction signal indicating a right turn, the direction determination unit 622 determines a direction signal indicating a left turn. It is determined whether or not an instruction signal is received (step S1107).

[0125] When a direction indication signal indicating a left turn is received, the direction determination unit 622 determines whether the left turn optical device 1 00L (step S1108), and the process ends.

[0126] If no direction signal indicating a left turn is received, the vehicle position determination unit 623 determines the current position of the vehicle. It is determined whether the position is a blind spot or not (step S1109). If it is determined that the direction is correct, the determination result is output to the direction determination unit 622.

[0127] If the position is in a blind spot, the direction determination unit 622 causes the forward optical device 100F to turn on the Then, the CPU 11 outputs a signal indicating the operation (step S1110) and ends the process.

[0128] On the other hand, if it is determined that the position is not a blind spot, the process ends.

[0129] [Reflector shape] As described above, in this embodiment, six optical devices 100 are used. As shown in Fig. 1, the first forward optical device 100Fa is installed at a height of 600 mm and is positioned at a front 2 An arrowhead pattern is displayed on the road surface 300 000 mm ahead. This can be realized by the optical device 100 described with reference to FIGS. The light source 110 is a luminous material, such as Nichia NCDA170C (23 0lm) is used.

[0130] Ray tracing simulation of the illuminance distribution on the road surface 300 obtained by the first forward optical device 100Fa The simulation results are shown in FIG. 19. As shown in this figure, the first forward moving optical device 100Fa For example, an orange forward pattern 430a is formed in the pattern display area 401 on the road surface 300. do.

[0131] Hereinafter, the second forward optical device 100Fb and the right / left turn optical device will be referred to as the right turn optical device. optical devices for right-turning (first right-turning optical device 100Ra and second right-turning optical device 100Rb) An example of the shape of the reflector 120 and the positional relationship with the light source 110 will be described below. , the irradiation surface 301 is the road surface 300, and the coordinates used in the description of the optical device 100 of the first embodiment are The following description will be given using the system 911. The systems are installed at the positions shown in FIG. 14(b), and An example of displaying the shape shown in FIG. 14(b) at the display position shown in FIG. 14(b) will be explained below. Reveal.

[0132] [Second advancement optical device] The shape of the effective area of ​​the reflecting surface 121 of the reflector 120 of the second forward moving optical device 100Fb An example of the positional relationship between the second front end and the light source 110 will be described with reference to FIGS. 20(a) to 22. As shown in FIG. 14(b), the optical device 100Fb is positioned 600 mm below the road surface 300. An arrowhead-shaped forward movement pattern 430b is formed 1200 mm ahead.

[0133] 20(a) to 20(d) show the effective area of ​​the reflecting surface 121 of the reflector 120. 20(a) is a perspective view, and FIG. 20(b) is a diagram showing the positional relationship between the light source 110 and the area. , z'-y' plan view, Figure 20(c) is the x'-y' plan view, Figure 20(d) is the x'-z' FIG.

[0134] Here, the same light source 110 as in the optical device 100 of the first embodiment is used. The settings for the first area 121a and the second area 121b are the same.

[0135] However, the coordinates of the center of the light emitting area of ​​the light source 110 are (0, -8.5, 7.5). The turn display area 401 is an area from 700 mm to 1200 mm in the z'-axis direction. The first area 121a is the area in the pattern display area 401 where the x' coordinate is from -400 mm to 0 mm. The first irradiation image, which is a partial irradiation image, is formed in the region of x' A second irradiation image, which is a partial irradiation image, is formed in the area from coordinates 0 mm to 400 mm.

[0136] The free-form surface shapes of the first region 121a and the second region 121b are defined as follows: The point sequence data is shown in Table 541 of FIG. 21 and Table 542 of FIG. 22. As data, the direction cosines (l', m', n') of each position (x', y', z') in the coordinate system 911 are Shows.

[0137] Here, the illuminance distribution on the road surface 300 obtained by the second forward optical device 100Fb having the above specifications is The simulation results of the ray tracing are shown in FIG. 23. Here, the light source 110 is Among the LEDs with the above light-emitting area, Nichia NCDW170C (350lm) was used. An irradiation image was formed on the road surface 300.

[0138] As shown in this figure, the second forward optical device 100Fb detects a pattern on the road surface 300. In the display area 401, a forward pattern 430b is formed.

[0139] [First right-turn optical device] The shape of the effective area of ​​the reflecting surface 121 of the reflector 120 of the first right-turn optical device 100Ra An example of the positional relationship between the first right and the light source 110 will be described with reference to FIGS. As shown in FIG. 14(b), the folding optical device 100Ra is positioned 600 mm below the road surface 300. 2221mm ahead, there is a right turn pattern 450a, which is an arrowhead shaped pattern rotated 45 degrees clockwise. Form.

[0140] 24(a) to 24(d) show the effective area of ​​the reflecting surface 121 of the reflector 120. 24(a) is a perspective view, and FIG. 24(b) is a diagram showing the positional relationship between the light source 110 and the area. , z'-y' plan view, Figure 24(c) is the x'-y' plan view, Figure 24(d) is the x'-z' FIG.

[0141] Here, the same light source 110 as that of the first forward moving optical device 100Fa is used. The coordinates of the center of the light area are also the same.

[0142] However, the pattern display area 401 is an area from 1461 mm to 2321 mm in the z'-axis direction. In addition, the first region 121a and the second region 121b are as shown in FIG. , the reflective surface 121 of the reflector 120 passes through the point (2.3, 0, 0) of the coordinate system 911, and z The area on the left side of the figure is the first area 121. The first area 121a is the pattern display area 40, and the area on the right is the second area 121b. 1, the first irradiation image, which is a partial irradiation image, is located in the area where the x' coordinate is -200 mm to 200 mm. The second area 121b is an area where the x' coordinate is -200 mm to 650 mm. A second exposure image, which is a partial exposure image, is formed in the area.

[0143] The point sequence data of the effective areas of the first area 121a and the second area 121b are shown in FIG. 26. Here, the point sequence data is shown in Table 551 of FIG. 5 and Table 552 of FIG. 26. 1 shows the direction cosines (l', m', n') of each position (x', y', z').

[0144] Here, the illuminance distribution on the road surface 300 obtained by the first right-turn optical device 100Ra having the above specifications is The simulation results of the ray tracing are shown in FIG. 27(a). Among the LEDs with the above light-emitting area, Nichia NCDA170C (230lm) ) was used to form an irradiation image on the road surface 300.

[0145] As shown in this figure, the first right-turn optical device 100Ra detects a pattern on a road surface 300. A right turn pattern 450a is formed in the display area 401.

[0146] [Second right turn optical device] The shape of the effective area of ​​the reflecting surface 121 of the reflector 120 of the second right-turn optical device 100Rb An example of the positional relationship between the second right and the light source 110 will be described with reference to FIGS. As shown in FIG. 14(b), the folding optical device 100Rb is located 600 mm below the road surface 300. Right turn pattern 45, 1777mm ahead, rotated 26.57 degrees clockwise in an arrowhead shape Form 0b.

[0147] Here, the same light source 110 as in the optical device 100 of the first embodiment is used. The coordinates of the center of the light emitting area are also the same.

[0148] However, the pattern display area 401 is an area from 1177 mm to 1777 mm in the z'-axis direction. The first region 121a and the second region 121b are, as shown in FIG. 28(c), , the reflective surface 121 of the reflector 120 passes through the point (3, 0, 0) of the coordinate system 911, and the z' The area on the left side of the figure is the first area 121a. The first area 121a is the pattern display area 401. The first irradiation image, which is a partial irradiation image, is located in the region of x' coordinates -150 mm to 150 mm. The second region 121b is a region where the x' coordinate is -150 mm to 550 mm. A second exposure image, which is a partial exposure image, is formed on the first exposure image.

[0149] The free-form surface shapes of the first region 121a and the second region 121b are defined as follows: The point sequence data is shown in Table 561 of FIG. 29 and Table 562 of FIG. 30. As data, the direction cosines (l', m') of each position (x', y', z') in the coordinate system 911 are , n').

[0150] Here, the illuminance distribution on the road surface 300 obtained by the second right-turn optical device 100Rb having the above specifications is The simulation results of the ray tracing are shown in FIG. 27(b). Among the LEDs with the above light-emitting area, Nichia NCDW170C (350lm) ) was used to form an irradiation image on the road surface 300.

[0151] As shown in this figure, the second right-turn optical device 100Rb detects a pattern on a road surface 300. In the display area 401, a right turn pattern 450b is formed.

[0152] As described above, according to this embodiment, the first embodiment and / or the second embodiment The present invention provides a direction display device 600 using the optical devices 100 and 101 described above. That is, according to this embodiment, the light utilization efficiency is good, and the shape showing a specific intention is simple. This allows the presence of the vehicle and the path of the vehicle to be detected. It is possible to inform others (drivers of other vehicles, pedestrians, etc.) of future intentions.

[0153] Here, using the optical devices 100, a light-collecting mark is projected onto a road surface 300 in front of a vehicle 200. The simulation results of how the image 400 is viewed from the other vehicle 202 when it is displayed are shown in FIG. 31(a) to 31(f). Here, as shown in FIG. 16, the position of the other vehicle 202 is The location is far away, that is, 60 m away from the vehicle on a road perpendicular to the road of the vehicle. do.

[0154] As described above, the forward optical device 100F, the left-turn optical device 100L, and the right-turn optical device 100R are Among the light-collecting marks irradiated by the device 100R, the light-collecting marks farther from the vehicle 200 (forward pattern) The colors of the left turn pattern 430a, the left turn pattern 440a, and the right turn pattern 450a are orange. The light-collecting mark (forward pattern 430b, left turn pattern 440b, right turn pattern 450) The color of the left turn pattern 440a and the left turn pattern 440b is white. Similarly, right turn patterns 450a and 450b are also arranged in a row. They are arranged in a line in the direction of travel of 02.

[0155] FIG. 31(a) shows left turn patterns 440a and 440b, as shown in FIG. 14(b). FIG. 31(b) shows an example in which left turn patterns 440a and 440b are displayed in different colors. 31(c) shows an example in which forward patterns 430a and 430b are displayed in the same color. , as shown in Fig. 14(b), each is displayed in a different color. 31(e) shows an example in which the forward patterns 430a and 430b are displayed in the same color. The folding patterns 450a and 450b are displayed in different colors as shown in FIG. 14(b). FIG. 31(f) shows an example in which right turn patterns 450a and 450b are displayed in the same color. This is an example.

[0156] As shown in this figure, from a distance (60 m away), each light-collecting mark 400 appears deformed. However, according to this embodiment, when turning right or left, the two light-collecting marks 400 are visible to others. The images are arranged so that they overlap one another and are also of different colors. In other words, the intention is easy to understand. In particular, the arrow in the direction in which the vehicle is moving (the arrow farther from the vehicle) ) to a predetermined, fixed color, making the intention easier to understand.

[0157] Generally, other people do not exist in fixed positions relative to the vehicle. The light-collecting mark 400 shown in the figure is observed by a person relatively close to the vehicle, and by a person far away. The appearance of the light collection mark 400 differs when viewed by another person.

[0158] For example, suppose the driver of the other vehicle 202 is looking at the light-collecting mark 400 from a height of 1.2 m. In this case, if the vehicle is 60 m away, the lateral direction is larger than if the vehicle is 10 m away. The image shows a condenser mark 400 that has been reduced by approximately 0.19 times in the horizontal direction and approximately 0.04 times in the vertical direction. This will be the case.

[0159] In other words, the light-collecting mark, which is intended to be observed by nearby people, is not visible to distant people. The light-gathering mark, which is intended for distant observers, is difficult to judge the intention of the observer. This makes it difficult to judge the vehicle's intentions.

[0160] However, according to this embodiment, as described above, two left and two right turns are The light collection marks 400 indicating the above travel directions are displayed. The light collection mark 400 close to the vehicle and the light collection mark 400 far from the vehicle are displayed in different colors. It is considered to be.

[0161] Therefore, according to the traveling direction display device 600 of this embodiment, other people near the vehicle can see the light condensing mark. When a person sees the map 400, they can easily recognize the intention of the vehicle. Even in this case, the details of the shape are difficult to distinguish, but the mark appears to be two overlapping colors. Depending on whether a specific color appears to be above or below, it can be determined whether the vehicle is turning right or left. In the case of the forward mark, if the two colors overlap, It looks like there is no movement and it is easy to tell that they are trying to move forward.

[0162] Therefore, according to the traveling direction display device 600 of this embodiment, the traveling direction can be displayed regardless of the location of other people. According to this embodiment, the travel direction display device 60 0 can be achieved with a simple configuration, at low cost, and with high light utilization efficiency.

[0163] The traveling direction display device 600 of this embodiment uses a lens 170 as an optical element. This may be realized as follows.

[0164] In the example of this embodiment, the forward optical device 100F, the left-turn optical device 100L, and The right-turn optical device 100R includes two optical devices, and is configured to detect the vehicle's position depending on the distance from the vehicle. It is configured to display light collection marks of different colors. However, The number of optical devices 100 is not limited. The left-turn optical device 100 may be provided with a forward optical device 100F and a left-turn optical device 100F. The optical devices 100 provided in the right-turn optical device 100R and the right-turn optical device 100L are respectively The light collecting marks of different colors are configured to be displayed in different pattern display areas on the road surface 300. It may be done.

[0165] The optical device 100 in each direction may share the body 150 and the cover 140. That is, a plurality of pairs of light sources 110 and reflectors 120 are arranged in one body 150. It may be stored.

[0166] Also, instead of providing an optical device 100 in each direction, one optical device 100 or It may be realized by a set of optical devices 100 that display light-collecting marks in a line in the direction of the arrow. The heading indicator 600 changes the orientation of the optical device 100 or set of optical devices 100. The lamp controller 610 further includes a movable mechanism for controlling the direction indicator switch 601. In response to the direction indication signal, a signal to change the direction of the optical device 100 is output to the movable mechanism. The driving mechanism may be realized by, for example, a motor.

[0167] In this embodiment, even if the vehicle is traveling at a speed less than a predetermined speed, the vehicle may be positioned in a blind spot. The forward optical device 100F is configured to be turned on only when the vehicle is in a forward position. However, the present invention is not limited to this. For example, even if the speed is below a certain level, if the turn signal is not operated, Alternatively, the forward optical device 100F may be configured to be always turned on. The controller 610 does not need to include the vehicle position determination unit 623.

[0168] In this embodiment, the optical device 100 is turned on only when the vehicle is stopped or traveling at a low speed. However, the control based on the vehicle speed is not limited to this. For example, even if you are driving at high speed on a motorway, if there are no pedestrians around, In a suitable environment, the optical device 100 may be configured to light up or flash.

[0169] In this case, the lighting controller 610 uses a position information acquisition device such as a navigation satellite such as a GPS. Using information from the device 604 and the vehicle speed sensor 603, the vehicle is running on a motorway. If the vehicle is traveling on a highway, the optical device 100 is turned on. Alternatively, the indicator may be made to blink.

[0170] In this embodiment, a road surface 300 in front of the vehicle 200 is provided with a marking indicating the traveling direction of the vehicle 200. However, the light collection mark 400 is displayed when the vehicle 200 The area is not limited to the front of the vehicle 200, but is a predetermined range area around the vehicle 200, specifically may be at least one of the front, side, and rear of the vehicle 200.

[0171] For example, the optical device 100 is provided at the rear of the vehicle 200 and connected to the lighting controller 610. Based on a signal from a reverse gear sensor (not shown) indicating that the reverse gear has been enabled, The light collecting mark 400 may be displayed behind the vehicle 200. The direction of travel when traveling may be displayed on the road surface 300 behind.

[0172] In addition, optical devices 100 are provided at the front and rear of the vehicle 200, and the vehicle 200 is When traveling in the forward direction, the vehicle 200 is directed to the road surface 300 in front of the vehicle 200, and when traveling backward, the vehicle 200 is directed to the road surface 300 in front of the vehicle 200. In this case, the traveling direction may be displayed on the road surface 300 behind the vehicle 200.

[0173] That is, the traveling direction in which the light collection mark is displayed is not limited to the forward, left, or right direction. The optical device 100 may be configured to display information in multiple directions, such as in the rear. A light collecting mark is provided for each traveling direction, and a light controller 6 10 identifies the traveling direction of the vehicle 200 based on the detection signal of the state detection device, and The optical device 100 provided in correspondence with the direction of travel is turned on or blinks.

[0174] In this case, the number of optical devices 100 is smaller than the number of traveling directions in which the light collection marks are displayed. That is, the optical device 100 or the optical device The above-mentioned movable mechanism may be provided to change the orientation of the set of 100. The controller 610 determines the traveling direction of the vehicle 200 based on the detection signal of the state detection device. Then, a signal is output to the moving mechanism so that the light collection mark is displayed in the specified direction of travel. For example, one optical device 1 capable of displaying a light collection mark in all directions of travel in which the light collection mark is displayed. It can be 00, or the light collection mark is displayed in all directions ahead. A possible first optical device 100 and a light collecting mark in all directions of travel behind the light collecting mark. It may be paired with a second optical device 100 capable of displaying the image.

[0175] At this time, each optical device 100 detects the distance from the vehicle 200 to the road surface 300, which is the irradiation surface. The light collection mark with different colors depending on the distance is displayed in multiple display areas with different distances. It may be configured to do so.

[0176] <Variation 1> In each of the above embodiments, a light-collecting mark representing a specific intention is placed on the road surface 300, which is the irradiated surface. An arrowhead pattern is formed as an irradiation image (light-collecting mark) 400. The light collecting mark 400 to be displayed is not limited to this. For example, an arrow shaft may be used. It may also be an arrow pattern with

[0177] The shape of the reflector 120 that achieves this will be described with reference to FIGS.

[0178] Here, the coordinate system 911 used in the explanation of the optical device 100 of the first embodiment is used. In addition, the same light source 110 as that of the optical device 100 of the first embodiment is used. The coordinates of the center are also the same.

[0179] However, as shown in FIG. 32, in this modified example, the pattern display area 401 in the z'-axis direction The range is between 1200mm and 2000mm. The range in the x' direction is the same.

[0180] 33(a) to 33(d) show the effective area of ​​the reflecting surface 121 of the reflector 120. 33(a) is a perspective view, and FIG. 33(b) is a diagram showing the positional relationship between the light source 110 and the area. , z'-y' plan view, Figure 33(c) is the x'-y' plan view, Figure 33(d) is the x'-z' FIG.

[0181] In this modification, as shown in FIG. 33(c), the reflecting surface 121 of the reflector 120 is , three different free-form surface regions (first region 121a, second region 121b, third region The first region 121a, the second region 121b, and the third region 121c are As shown in FIG. 33(c), the reflecting surface 121 of the reflector 120 is located at a point (- A plane parallel to the z'-y' plane passing through the point (4,0,0) and the z'-y' plane passing through the point (4,0,0). The area on the left side of the figure is the first area 121a, and the area in the center is the second area 121b. The first area is the second area 121b, and the area on the right is the third area 121c. In the pattern display area 401, the area with the x' coordinate from -500 mm to 0 mm is partially illuminated. The second region 121b forms a first irradiation image, which is a projected image. The second irradiation image, which is a partial irradiation image, is formed in the area of ​​100 mm from the third area 121c. A third irradiation image, which is a partial irradiation image, is formed in the region where the x' coordinate is 0 mm to 500 mm.

[0182] The free-form surface shapes of the first region 121a, the second region 121b, and the third region 121c are as follows: The point sequence data for each valid area is shown in Table 571 of FIG. 34, Table 572 of FIG. 35, and Table 3 6. Here, the point sequence data is the data for each position (x' , y', z') and the direction cosines (l', m', n').

[0183] Here, in the ray tracing of the illuminance distribution on the irradiation surface 301 obtained by the optical device 100 with the above specifications, The simulation results are shown in Fig. 37(a) to Fig. 37(d). Among the LEDs with the above light-emitting area, Nichia NCDW170C (350L) An irradiation image was formed on the irradiation surface 301 using the laser beam irradiation device m.

[0184] FIG. 37(a) shows a diagram of a light beam emitted from a light source 110 and reflected by a first region 121a. Also, the illuminance distribution (first irradiation image) 471a of the pattern display area 401 on the irradiation surface 301 is shown. FIG. 37(b) shows the pattern on the irradiation surface 301 obtained by reflection at the second region 121b. 37(c) shows the illuminance distribution (second irradiation image) 471b of the display area 401. The illuminance distribution ( 37(d) shows the first region 121a and the second region 121b. 1b and the third region 121c, an illuminance distribution (light collection mark) 471 is shown.

[0185] As shown in FIG. 37(d), according to the optical device 100 of this modified example, the particles on the irradiation surface 301 In the turn display area 401, an arrow-shaped light collection mark 471 is formed.

[0186] In this modification, a lens 170 may be used as the optical element.

[0187] Furthermore, the light-gathering mark that indicates a specific intention is not limited to an arrowhead, an arrowhead, or the like that indicates a direction. For example, the deflection surface may be an X-shape, a polygonal shape, or the like, and each of the deflection surfaces may form a different partial irradiation image on the irradiation surface 301. The image is divided into a plurality of divided regions, and various shapes are realized by combining the partial irradiation images. It is possible.

[0188] <Variation 2> In the above embodiment and modified example, when the optical device 100 includes one light source 110, However, a plurality of light sources 110 may be provided. The light from each light source 110 is collected by one optical element, and a plurality of The illumination images may be formed at different locations on the illumination surface 301 .

[0189] Hereinafter, the optical device 102 having two light sources 110 will be referred to as an optical element having a reflector 120. In the optical device 102, two light sources 110 are distinguished from each other. When necessary, they will be referred to as a first light source 110a and a second light source 110b, respectively.

[0190] The effective area of ​​the reflecting surface 121 of the reflector 120, the primary light source 110a and the secondary light source 11 The positional relationship between the center of the light emitting region of 0b and the center of the light emitting region is shown in Figs. 38(a) to 38(d).

[0191] 38(a) to 38(d) show the effective area of ​​the reflecting surface 121 of the reflector 120. 38(a) is a perspective view, and FIG. 38(b) is a diagram showing the positional relationship between the light source 110 and the area. , z'-y' plan view, Figure 38(c) is the x'-y' plan view, Figure 38(d) is the x'-z' FIG.

[0192] Here, the same coordinate system 911 as in the first embodiment is used. The shape of the light emitting area is the same as that of the light source 110 used in the embodiment. The LED (nichia NCSA170) was 1.15 mm in the z-axis and z'-axis directions. C) is used, where the coordinates of the center of the light-emitting area are (0, -12, 13.5), and the center axis of the directivity angle is (0, -12, 13.5). The direction is arranged in the y'-axis direction.

[0193] The second light source 110b has a light emitting area of ​​1.15 mm in the x'-axis direction and 2.3 mm in the z'-axis direction. The LED (nichia NC2W170C) is used. The center coordinate of the light-emitting area is The beam is positioned so that the center axis of the beam angle is in the y'-axis direction.

[0194] Here, two arrows are displayed as an irradiation image 400 in a pattern display area 401 of the irradiation surface 301. The shape of the gullet will be described as an example.

[0195] The pattern display area 401 by the light from the first light source 110a is 1500 mm in the z'-axis direction. The range is m to 2300 mm, and the range in the x'-axis direction is -500 mm to 500 mm. The pattern display area by the light from the light source 110b is 1000 mm to 135 mm in the z'-axis direction. 0 mm, and the x'-axis direction is in the range of -500 mm to 500 mm.

[0196] The basic configuration of the reflecting surface 121 of the reflector 120 is the same as that of the first embodiment. That is, as shown in Figure 38(c), the plane obtained by dividing the image by a plane parallel to the z'-y' plane passing through the origin is The first region 121a and the second region 121b are included. 21b each have a different free-form surface shape.

[0197] The first area 121a is the area in the pattern display area 401 where the x' coordinate is from -500 mm to 0 The first irradiation image, which is a partial irradiation image, is formed in an area of ​​x mm. 'A second irradiation image, which is a partial irradiation image, is formed in the area from coordinates 0 mm to 500 mm.

[0198] The free-form surface shapes of the first region 121a and the second region 121b are defined as follows: The point sequence data is shown in Table 581 of FIG. 39 and Table 582 of FIG. 40. As data, the direction cosines (l', m', n').

[0199] Here, the ray tracing of the illuminance distribution on the irradiation surface 301 obtained by the optical device 102 with the above specifications is The simulation results are shown in Fig. 41. Here, the LED used in the primary light source 110a The luminous flux of the LED used in the second light source 110b is set to 230 lm, and the luminous flux of the LED used in the second light source 110b is set to 90 lm. This is the result when

[0200] In this figure, the illuminance distribution (light collection mark) 481a is due to the light of the primary light source 110a, The illuminance distribution (light collection mark) 481b is due to the light from the second light source 110b.

[0201] As shown in the figure, by providing two light sources 110, the pattern surface on the irradiation surface 301 Display area 401 can display two arrowhead patterns.

[0202] A plurality of light sources 110 are provided, and light from each light source 110 is collected by one optical element. However, when a plurality of irradiation images are formed at different positions on the irradiation surface 301, the plurality of irradiation images formed It is desirable that the illuminances of the two are approximately the same.

[0203] In general, even if the luminous flux of light emitted from the plurality of light sources 110 is the same, The light emitting area, the distance between the light source 110 and the reflector 120, the size of the illuminated image, Since there are differences in size, the illuminance of the image corresponding to each light source 110 often differs greatly. In this modified example, the illuminance of the illumination image corresponding to each light source 110 is set to be approximately the same. In this way, the luminous flux of the light emitted from each light source 110 is set to a different value in advance.

[0204] The luminous flux of each light source 110 is set in advance, for example, based on the illuminance of the irradiation image corresponding to the luminous flux of each light source 110. The relationship between the two is investigated, and the illuminance of the multiple irradiation images is set to be approximately the same from that relationship. is set to

[0205] In the example of FIG. 41, the luminous flux of the LED used in the first light source 110a is set to 230 lm, and By setting the luminous flux of the LED used in the second light source 110b to 90 lm, the light condensing mark 481a The illuminance of 481b is approximately the same as that of 481a.

[0206] The luminous flux of each light source 110 is adjusted by controlling the current value, for example. , PWM control, that is, the light source 110 is made to blink within a cycle that is invisible to humans, This can be done by changing the ratio of the time the light is on during the period (duty ratio). can.

[0207] When controlling the current value, the relationship between the current value and the illuminance for each illuminance image is stored in advance in the ROM 61. 3. Then, the illuminance determination unit 621 determines the illuminance based on the information from the road surface analysis device 602. The current value required to obtain the determined target illuminance value is determined, and the lighting signal containing the current value information is sent to the The signal is output to the determination unit 622.

[0208] In addition, when controlling the duty ratio, the relationship between the duty ratio and illuminance for each illuminance image is The illuminance determining unit 621 stores the illuminance in the ROM 613 in advance. A duty ratio for obtaining the target illuminance value determined based on the information of the duty ratio The direction determining unit 622 outputs a lighting signal including the information.

[0209] In this modification, the shape of the reflector 120 may be changed to an arrow pattern. Alternatively, a lens 170 may be used in place of the reflector 120 .

[0210] The present invention is not limited to the above-described embodiments and modifications, and various In other words, various modifications that do not depart from the spirit of the present invention are included in the present invention. The above-described embodiments and modifications are within the scope of the present invention. are provided for ease of illustration and the invention does not necessarily relate to these embodiments and / or It is not necessary to include all of the configurations included in the modified examples. [Explanation of symbols]

[0211] 100: Optical device, 100F: Forward optical device, 100Fa: First forward optical device, 10 0Fb: Second forward optical device, 100L: Left turn optical device, 100La: First left turn optical device device, 100Lb: second left-turn optical device, 100R: right-turn optical device, 100Ra: first Right turn optical device, 100Rb: Second right turn optical device, 101: Optical device, 102: Optical device 110: Light source, 110a: First light source, 110b: Second light source, 111: Substrate, 120: Reflector, 121: Reflective surface, 121a: First region, 121b: Second region, 121c: Second Three areas: 130: support member; 131: fixing screw; 132: positioning pin; 140: cover 150: body, 151: lamp chamber, 152: space, 160: lighting control circuit, 170: lens 171: Output surface, 171a: First region, 171b: Second region, 172: Incident surface, 200: vehicle, 202: other vehicles, 300: road surface, 301: irradiated surface, 302: irradiated surface, 400: Irradiation image (light collection mark), 401: Pattern display area, 402: Pattern display area area, 411: light-collecting mark, 411a: first irradiation image, 411b: second irradiation image, 412: light-collecting mark Mark, 412a: first irradiation image, 412b: second irradiation image, 430a: forward pattern, 43 0b: forward pattern, 440a: left turn pattern, 440b: left turn pattern, 450a: right Folding pattern, 450b: right turn pattern, 471: light collection mark, 471a: first irradiation image, 4 71b: second irradiation image, 471c: third irradiation image, 600: Travel direction display device, 601: Turn signal switch, 602: Road surface analysis device, 6 03: Vehicle speed sensor, 604: Position information acquisition device, 610: Lighting fixture controller, 611: C PU, 612: RAM, 613: ROM, 621: Illuminance determination section, 622: Direction determination section, 6 23: Vehicle position determination unit, 911: Coordinate system, 912: Coordinate system

Claims

1. A vehicle that displays a light-gathering mark, A light source and an optical element that focuses light emitted from the light source onto an irradiation surface in the shape of a focusing mark; a lighting controller that controls the turning on, turning off, or blinking of the light source; The deflection surface of the optical element, which is a surface that condenses light, is divided into a plurality of regions, the light emitted through each region on the deflection surface of the optical element forms a partial irradiation image on the irradiation surface corresponding to each region on the deflection surface, and the partial irradiation images are combined to form at least one of the light collection marks on the irradiation surface; Each of the divided areas forms a different partial irradiation image on the irradiation surface, The partial irradiation images are linear in shape, and the slopes of the lines are different, The optical element focuses the light emitted from the light source onto a specific area on the irradiation surface, thereby forming an irradiation image on the irradiation surface. A vehicle characterized by:

2. 2. The vehicle according to claim 1, The illumination surface is at a finite distance from the optical element. A vehicle characterized by:

3. 2. The vehicle according to claim 1, the optical element is a reflector that reflects light emitted from the light source, The deflecting surface is a reflective surface of the reflector. A vehicle characterized by:

4. 2. The vehicle according to claim 1, the optical element is a lens that receives the light emitted from the light source and emits the light from an emission surface, The deflection surface is at least one of the exit surface and the entrance surface of the lens. A vehicle characterized by:

5. 2. The vehicle according to claim 1, Each region on the deflection surface has a free-form surface shape that focuses the light emitted through the deflection surface onto the irradiation surface. A vehicle characterized by:

6. 2. The vehicle according to claim 1, The light-collecting mark is a mark that represents a specific intention. A vehicle characterized by:

7. 2. The vehicle according to claim 1, The light collection mark has a shape that indicates a direction. A vehicle characterized by:

8. 7. The vehicle according to claim 6, The light collecting mark is an arrowhead shape. A vehicle characterized by:

9. 7. The vehicle according to claim 6, The light collection mark is an arrow. A vehicle characterized by:

10. 2. The vehicle according to claim 1, The deflection surface of the optical element has a plurality of regions with different free-form surface shapes. A vehicle characterized by:

11. 2. The vehicle according to claim 1, further comprising a second light source different from the light source; a second light beam emitted from the second light source and emitted through each region of the deflection surface is combined to form partial irradiation images on the irradiation surface, thereby forming a second light-collecting mark at a position on the irradiation surface different from the position of the light-collecting mark; The second light collecting mark has a specific shape. A vehicle characterized by:

Images