Direction display device

Abstract

To provide an inexpensive traveling direction display device that has good light utilization efficiency, has a simple structure, and can display a complicated pattern.SOLUTION: A traveling direction display device 600 comprises an optical device 100 for displaying a light condensing mark 400, and comprises a light source 110, and an optical element for condensing light emitted from the light source 110, on an irradiation surface 301. A deflection surface of the optical element is divided into a plurality of regions. Light emitted via the respective regions on the deflection surface of the optical element forms partial irradiation images corresponding to the respective regions on the deflection surface, on the irradiation surface 301. The respective partial irradiation images are combined, and the at least one light condensing mark 400 is formed on the irradiation surface.SELECTED DRAWING: Figure 2

Description

[Technical field]

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

[0002] For example, the vehicle is equipped with a pattern having a predetermined shape, such as route information, projected onto the road surface in front of the vehicle. There is technology to display the

[0003] For example, in Patent Document 1, "the road is long in the first direction, which is the width direction of the road, 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 independently turned on and off; and an optical system that directs light emitted from the light source to 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 installed 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) The Japanese Patent Laid-Open Publication No. 2006-203369 discloses a road surface illumination device for a vehicle.

[0005] In addition, Patent Document 3 describes "at least one semiconductor light emitting element serving as a light source, A plurality of diffractive gratings having different shapes for transmitting 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 (summary excerpt). The "Iki" road marking lighting unit is disclosed.

[0006] Furthermore, in Patent Document 4, "Vehicle speed sensor, steering sensor, turn signal detection sensor Based on the information obtained from the various devices, the system is designed to detect the vehicle's progress at an intersection in the vehicle's direction of travel, If it is predicted that the vehicle will enter a prohibited road, 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 the projector is in projector mode, it is placed 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 function, The light source 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)" A projection device for a vehicle is disclosed.

[0008] In addition, Patent Document 6 states that "there are LEDs arranged on the outer periphery of the vehicle body and scattered around as light sources. The system uses multiple light-emitting diodes that project a specified display 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] JP 2016-107761 A [Patent Document 2] Japanese Patent Application Publication No. 11-301346 [Patent Document 3] JP 2016-135629 A [Patent Document 4] JP 2008-04587 A [Patent Document 5] JP 2004-136838 A [Patent Document 6] JP 2010-262889 A Summary of the Invention [Problem to be solved by the invention]

[0010] It is desirable for such a display device to have a simple structure and be capable of displaying a desired pattern. Furthermore, by displaying marks such as arrows, the system can communicate the intention of the driver to those around them. This leads to improved safety against accidents. For example, the technologies disclosed in Patent Documents 1 and 2 These techniques use only a light source and a reflector to display a mark on the road surface to alert other vehicles. According to the technique, simple marks such as circles, ellipses, and rectangles can be displayed, but complex marks such as arrows cannot be displayed. Therefore, for example, when the vehicle is used, 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 element that switches and lights up a diffraction grating section. By switching between these two, different patterns are drawn on the road surface. 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, a large number of semiconductor light emitting elements are required. 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 heavy wear.

[0013] Patent Document 5 discloses a technique for using a liquid crystal projector to draw marks. In a liquid crystal projector, a light source and a liquid crystal bulb are used to project a secondary image of a desired mark on 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 valve has low light transmittance. In the liquid crystal valve, the light in the areas other than the mark is blocked, and the secondary The light source is also created, which further reduces the light utilization efficiency. Multiple optical systems, including a straight-line light generating optical system and a projection optical system, are required, resulting in 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, even in these cases, the light in areas other than the mark is still blocked, and the light utilization It is inefficient, 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 method for displaying a desired mark by adjusting the shape of the mark. However, there is a technology to create a light source that matches the shape of the mark. In that case, costs will be higher.

[0016] The present invention has been made in view of the above circumstances, and provides a simple structure with good light utilization efficiency. To provide an inexpensive travel direction display device capable of displaying complicated patterns. [Means for solving the problem]

[0017] The present invention is a travel direction display device that displays a light-focusing mark, comprising a light source and an optical element that focuses light emitted from the light source in the form of a light-focusing mark on an irradiation surface, wherein a lamp controller mounted on a vehicle controls turning on, off, or blinking of the light source, wherein a deflection surface, which is a surface that focuses light of the optical element, 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 at least one of the light-focusing marks is formed on the irradiation surface by combining each of the partial irradiation images, and each of the divided regions respectively forms a different partial irradiation image on the irradiation surface, and the shape of the partial irradiation images is linear, with each line having a different inclination, 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] Moreover, in the travel direction display device according to the present invention, the irradiation surface is located at a finite distance from the optical element. Effect 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 description of the drawings]

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

[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 the present invention, 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 reference numeral may be omitted. Although not shown again, the same reference numerals may be used to refer to the same 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 according to the embodiment. FIG. 1(b) is a perspective view of the vehicle 200 in which the vehicle is mounted; FIG. 1(a) is a perspective view of the area enclosed by the dashed line in FIG. FIG.

[0023] As shown in FIG. 1(a) and FIG. 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 irradiated from a predetermined height onto a road surface 300 or the like around the vehicle 200, such as in front of the vehicle 200. The optical device 1 of this embodiment forms an irradiation image (light-collecting pattern, light-collecting mark) 400. 00 is not limited to vehicle use.

[0024] [Optical device] 2(a) and 2(b) are diagrams showing the configuration of an 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 front view of the optical device 100 of FIG. A' cross-sectional view.

[0025] 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. 2B is the front-rear direction, and the up-down direction is the up-down direction. Up (Up), Down (Dw), Front (Fr), Back (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. , is provided.

[0027] The body 150 has an opening at the front and has, for example, a box-like shape. The reflector 152 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, a light emitting diode (LED). The light source 110 is mounted on a substrate 111 provided on a support member 130. The light source is not limited to LED. 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 end.

[0029] The reflector 120 reflects light emitted from the light source 110 disposed at a predetermined position onto a predetermined surface ( An optical element that focuses light onto a specific area on an illuminated surface and forms an illuminated image on the illuminated surface. The irradiation surface is, for example, as shown in FIG. 1(b), a surface where the optical device 100 is mounted on a vehicle 200. In this case, the road surface 300 is in front of the vehicle 200 and the like. The obtained projection image 400 is The shape indicates a specific purpose, for example, a direction of intended travel.

[0030] The reflector 120 has a deflection surface that collects 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 different partial illumination images. Each divided area has an aspheric or free-form surface shape.

[0031] The shape of the reflecting surface 121 of the reflector 120 depends on the required irradiation 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 region on the irradiation surface where the irradiation image is formed and the light source 22 is incident will be described in detail later.

[0032] The reflector is made of, for example, resin, glass, or metal. For example, an aluminum film is evaporated onto 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, a fixing screw 131 or the like. At this time, the light source 110 is disposed above the light source 110 so as to be positioned 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, The control signal is received from the outside, and the light source 110 is controlled to be turned on 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 The CPU executes programs stored in the ROM. The lighting of the light source 110 may be controlled by loading the program 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 within 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 an 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 -600 mm. The origin O is at the 600mm position.

[0041] Also, on a plane including the y′ axis and the center of the light emitting region of the light source 110, a line parallel to the irradiation surface 301 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 arrow head 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 and 4A is a perspective view, and FIG. 4B is a diagram showing the positional relationship between the light source 110 and the z′- 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 direction 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 curved surface shape, and the second region 121b. 21a and the second region 121b are the reflective surface 121 of the reflector 120 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 left side of the figure is The area to the right of the first area is the second area 121b.

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

[0047] The free-form surfaces of the first region 121a and the second region 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 is a curved surface in which the light from the light source 110 is 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 and a second irradiation image on the irradiation surface 301 obtained by reflecting the light from the first region 121b are shown. In combination with the second irradiation image on the irradiation surface 301, an arrowhead shape is displayed on the irradiation surface 301. In addition, the free-form surface is not limited to 5th order and 5th order NURBS surfaces, A freeform surface suitable for displaying a desired light-focused mark (illumination image) is selected.

[0048] The free-form surface shapes of the first region 121a and the second region 121b are each The point sequence data is shown in Table 511 of FIG. 5 and Table 512 of FIG. 6. , the direction cosines (l', m', n ').

[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 first region 121a and the second region 121b have different free-form surface shapes.

[0050] Here, a ray tracing simulation 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 FIG. 7(a) to FIG. 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 result of light emitted from the light source 110 being reflected by the first region 121a. 3 shows the illuminance distribution (first irradiation image) 411a of the pattern display area 401 on the irradiation surface 301. FIG. 7B shows a pattern surface on the irradiation surface 301 obtained by reflection from the second region 121b. FIG. 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. 7C, according to the optical device 100 of this embodiment, the power supply 302 on the irradiation surface 301 An arrowhead pattern (light collecting 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 are 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 indicating a specific intention on a desired surface with a simple structure.

[0054] According to the present 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 1. In other words, a mask or the like is not used to form an irradiation image. Therefore, the entire light 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 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. FIG. 8(b) is a front view, and FIG. 8(b) is a cross-sectional view taken along line AA' in FIG. 8(a).

[0056] In this embodiment, the optical device 101 is, for example, a vehicle 200, as in the first embodiment. The vehicle 200 is mounted on a vehicle body 210, and an illumination image 40 is projected from a predetermined height onto a road surface 300 around the vehicle 200, such as in front of the vehicle 200. 0. It should be noted that 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. In the lamp chamber 151, for example, a space 15 is formed parallel to the surface on the side facing the opening of the body 150. 2 and supported by fixing screws 131 etc.

[0060] The lighting control circuit 160 is disposed, for example, within 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 through the lens. 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 collects 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 regions 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 aspheric or free-form shape. Yes.

[0063] The shape of the deflection surface of the lens 170 may be determined according to the required irradiation image 400, illuminance distribution, etc. The position of the light source 110, the shape of the deflection surface of the lens 170, and the power distribution 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 by, for example, a fixing screw (not shown). At this time, the lens 170 is disposed so that the deflection surface is located 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. The following description will be given by taking as an example a case where the deflection surface 171 has a free-form shape and the entrance 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 distance of 600 m from the point Rn on the irradiation surface 302 in a direction perpendicular to the irradiation surface 302 is 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, a pattern display area 402 on the irradiation surface 302 is used as an irradiation image 400. For example, the shape of the exit surface 171 when forming an arrow head shape is shown in FIG. The pattern display area 402 is a region from Rn to Rz on the irradiation surface 302. The range is 1500mm~2000mm in the direction toward the center, and -500mm~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. 10A is a perspective view, and FIG. 10B is a perspective view of the light source 110. 10(c) is the x”-y” plane view, and FIG. 10(d) is the x”-z” plane view. FIG.

[0072] In this coordinate system 912, the light source 110 has a light emitting area center coordinates of (0, 0, -20). The central axis of the beam direction 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 figure, 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 a pattern display area 402 having an x-coordinate ranging 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 exposure image, which is a partial exposure image, is formed in the region with x" coordinates from 0 mm to 500 mm.

[0075] The free-form surfaces of the first region 171a and the second region 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 is formed by refracting light from the light source 110 in the first region 171a. A first irradiation image on the irradiation surface 302 obtained by reflecting the light from the first region 171b and a second irradiation image on the irradiation surface 302 obtained by reflecting the light from the first region 171b are shown. The combination of the second irradiation image on the irradiation surface 302 projects an arrowhead shape onto the irradiation surface 302. In addition, the free-form surface is not limited to a 5-order or 5-order NURBS surface, and may be any surface. A free-form surface suitable for displaying the desired focused light mark (illumination image) is selected.

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

[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 cosine at (0, -10, 6.021816) is 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 described above, the entrance 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 simulation 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 It is the distance from Rn in the direction from Rn to Rz on 02 (z'' axis).

[0080] FIG. 13(a) shows a reflection image obtained by refracting light emitted from a light source 110 in a first region 171a. 3 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 surface on the irradiation surface 302 obtained by refraction in the second region 171b. FIG. 13(c) shows the illuminance distribution (second irradiation image) 412b of the first region 402. 4 shows an illuminance distribution (light collecting mark) 412 by the first region 171a and the second region 171b.

[0081] As shown in FIG. 13C, according to the optical device 101 of this embodiment, on the irradiation surface 302 An arrowhead pattern (light collecting 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 (the 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. In other words, lighting can be controlled by using a light source array arranged in the shape of a light collection mark, or multiple optical systems can be used. Therefore, it is possible to form a shape showing a specific intention on a desired surface with a simple structure. It is possible to realize an optical device that can achieve this.

[0083] According to the present embodiment, the shape indicating a specific intention is formed on the deflection surface (exit surface) of the lens 170. 171) is realized by the shape of the irradiated light. In other words, the irradiated image is not formed by 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 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 above description has been given taking the case of a deflection surface 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. In this embodiment, the optical The sensor device 100 or 101 is mounted on the vehicle 200, and the sensor device 100 or 101 is mounted in front of the vehicle 200 depending on the 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 a 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) are diagrams showing a traveling direction displayed by the traveling direction display device 600 of this embodiment. FIG. 1 is a diagram for explaining an overview of planned direction display.

[0087] As shown in the figure, the traveling direction display device 600 of this embodiment is provided at the front end of the vehicle 200 with six The optical device 100 includes:

[0088] The six optical devices 100 are arranged, for example, at the center of the front of the vehicle 200 as shown in FIG. 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 center of the front of the vehicle will be referred to as The forward optical devices 100F are collectively referred to as a first forward optical device 100Fa, a second forward optical device 100Fb, and a third forward optical device 100Fc. The forward optical device 100Fb is a forward optical device 100 mounted on the front left side of the vehicle. , the first left-turn optical device 100La, the second left-turn optical device 100L, The device 100Lb, the two optical devices 100 mounted on the front right side of the vehicle, are collectively referred to as a right turn device. The optical device 100R, the first right-turn optical device 100Ra, and the 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 is a forward pattern 430b, and the first left-turn optical device 100La is a left-turn pattern 4 40a, the second left turn optical device 100Lb sets the left turn pattern 440b, and the first right turn optical device 100Lb sets 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 each displayed as a light collecting mark 400 on the road surface 300.

[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 arranged in a left-turn direction. 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, the left turn pattern 440a, and the right turn pattern 450a) and the proximity to the vehicle 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 colors of the light collection marks close to the mark are set to be different.

[0092] In addition, the left turn patterns 440a and 440b are for turning left from a lane perpendicular to the lane in which the vehicle 200 is located. The right turn patterns 450a and 450b are arranged in the same direction as the vehicle on the line. 50b is also arranged in the direction of travel of vehicles 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. The reflector 120 that realizes each of the light collection marks 400 is shown in Table 531 of FIG. The details of the shape will be described later.

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

[0095] The lighting controller 610 is a control device that instructs the lighting control circuit 160 of the optical device 100 to turn on the lighting. 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 controls the lamp The state detection device outputs the detection result 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, etc. may be connected.

[0097] The turn signal switch 601 outputs an operation signal (turn signal) when the turn signal is turned on. The direction indication signal includes information on the indicated direction. Can be enjoyed.

[0098] The road surface analyzer 602 analyzes the condition of the road surface 300 and transmits the result to the lighting controller 61. In this embodiment, for example, a light source, a polarization camera, and a camera for projecting light from the light source onto a road surface are used. and an analysis unit that analyzes the image of the irradiation state captured by the polarization camera. For example, a signal (road surface signal) specifying the condition of the road surface 300 is output to the lamp controller 610. In this embodiment, the road surface signal includes information indicating whether the road surface 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 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 the pulse The vehicle speed is detected based on the number of vehicle 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, for example, 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 the communication line, serial communication line, 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. Each of the 100 lights can be independently controlled to light up or blink.

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

[0104] A part 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 the 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 IC Integrated Circuit (IC), It may also be realized by a combination of software and hardware. Information and data necessary for the processing are stored in the ROM 613 and the RAM 612 .

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

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

[0108] When the amount of light emitted from the light source 110 can be controlled, the illuminance is determined by adjusting the amount of light emitted from the light source 110 according to the reflectance. The amount of luminous flux can be changed, for example, by controlling the current value. Alternatively, pulse width modulation (PWM) Dimming using pulse width modulation may be performed by controlling the light source 110 with a PWM By flashing the light at high speed in sync with the traffic light and at a frequency that makes it impossible for people to see, the illuminance of the light-focused mark 400 In this case, the ratio of the time during which the light is on in one cycle (duty By making the ratio smaller, 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 period when people are not visible is repeated at the period of the blinking of the turn signal. By repeating this process, the light collection mark 400 can be displayed flashing even when the illumination is reduced. be.

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

[0111] The case where these controls are realized will be described as an example. FIG. 17 is a functional block diagram of the lighting controller 610 of the present embodiment. As shown in FIG. 1, 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. Then, the result of the determination is output to the direction determining unit 622.

[0113] In this embodiment, the vehicle speed is determined based on signals from a vehicle speed sensor 603 and a road surface analysis device 602. When a signal indicating that the vehicle speed is less than a predetermined vehicle speed is received from the vehicle speed sensor 603, In addition, if the road surface signal received from the road surface analysis device 602 includes The reflectance determines the target illuminance value (target illuminance value). Based on the target illuminance, for example, a 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 is determined. The optical device 100 to be turned on is determined by the direction signal.

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

[0116] The vehicle position determination unit 623 determines whether the vehicle position is in a predetermined blind spot or not, and The vehicle position determination unit 623 outputs the information from the position information acquisition device 604 to the direction determination unit 622. The system receives the current position information of the vehicle and map information, and detects 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 controller 610 of this embodiment. This is a process flow for the lighting control unit 100. The process is executed at a predetermined time interval. 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 determination unit 621 determines the vehicle speed based on a 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] When 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 determination unit 621 determines a target illuminance value of the light collection mark 400. The duty ratio (light source duty ratio) in the 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 signal 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 that 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 turn-on instruction signal is output to 00R (step S1106), and the process ends.

[0124] When the direction determining unit 622 does not receive a direction signal indicating a right turn, the direction determining 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 determining 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), and the position is a blind spot. If it is determined that the above is the case, the determination result is output to the direction determining unit 622.

[0127] If the position is in a blind spot, the direction determination unit 622 issues a lighting command to the forward optical device 100F. Then, the CPU 111 outputs a signal indicating that the process is complete (step S1110), and the process ends.

[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 moving optical device 100Fa is installed at a height of 600 mm and is positioned at a front side of the first forward moving optical device 100Fa. 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 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 described as a representative. 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 its 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 positions shown in FIG. 14(b) and are in contact with the road surface 300. An example of displaying the shape shown in FIG. 14(b) at the display position shown in FIG. 14(b) will be described. 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. As shown in FIG. 14(b), the optical guidance device 100Fb is located 600 mm below the road surface 300. An arrowhead-shaped advance 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. 20(c) is a plan view of the x'-y' plane, and FIG. 20(d) is a plan view of the x'-z' plane. FIG.

[0134] Here, the same light source 110 as in the optical device 100 of the first embodiment is used. The settings of 1a and the second area 121b are also the same.

[0135] However, the center coordinates 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. A first irradiation image, which is a partial irradiation image, is formed in the region of x' A second exposure image, which is a partial exposure 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 each 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 results of a simulation using ray tracing are shown in FIG. 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 the figure, the second forward optical device 100Fb detects a pattern on a 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 lens and the light source 110 will be described with reference to FIGS. As shown in FIG. 14(b), the folding optical device 100Ra is located 600 mm below the road surface 300. 2221 mm ahead, there is a right turn pattern 450a in the shape of an arrowhead 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. 24(c) is a plan view of the x'-y' plane, and FIG. 24(d) is a plan view of the x'-z' plane. 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 reflecting surface 121 of the reflector 120 passes through the point (2.3, 0, 0) of the coordinate system 911, and z The area is divided by a plane parallel to the '-y' plane. 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 right area is the second area 121b. 1, the first irradiation image, which is a partial irradiation image, is in the area from -200 mm to 200 mm in x' coordinate. The second area 121b is an area with x' coordinates ranging from -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') in

[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 result by ray tracing is shown in FIG. 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 the figure, the first right-turn optical device 100Ra detects a pattern on a road surface 300. In the display area 401, a right turn pattern 450a is formed.

[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 lens 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, 1777 mm 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. , 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 area with x' coordinates from -150 mm to 150 mm. The second region 121b is a region from -150 mm to 550 mm in x' coordinate. 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 each The point sequence data is shown in Table 561 of FIG. 29 and Table 562 of FIG. 30. As the 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 result by ray tracing is shown in FIG. 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 the 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 A direction indicator 600 is provided using the optical devices 100 and 101 described above. That is, according to this embodiment, the light is efficiently used, the structure is simple, and the shape indicates a specific intention. This allows the driver to easily detect the presence of the vehicle and the course of the vehicle. It is possible to inform others (drivers of other vehicles, pedestrians, etc.) of future intentions.

[0153] Here, using each of the optical devices 100, a light collecting mark is projected on a road surface 300 in front of a vehicle 200. The results of a simulation of how the vehicle 202 sees the screen 400 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, i.e., 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 are white. Similarly, the right turn patterns 450a and 450b are 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 left turn patterns 440a and 440b. FIG. 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. FIG. 31(d) shows In this example, 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. 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 long 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 not visible to others. The vehicle is placed vertically and overlapping, and the colors are also different. In other words, the intention is easy to understand. In particular, the arrow showing the direction in which the vehicle is moving (the arrow showing the direction away from the vehicle) ) to a predetermined, fixed color, making the intention easier to understand.

[0157] Generally, other people do not exist at 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 observed by another person.

[0158] For example, when the driver of the other vehicle 202 sees 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 focal length is approximately 0.19 times larger in the vertical direction and approximately 0.04 times larger in the vertical direction. This will be the case.

[0159] In other words, the light-focused mark, which is intended to be observed by nearby people, is not visible to distant people. The light-focused mark, which is intended for people far away to observe, is difficult to judge the intention of the person in question. This makes it difficult to judge the vehicle's intentions.

[0160] However, according to the present embodiment, as described above, two left and right turns are The light collection marks 400 indicating the above travel directions are displayed. The display color of the light collection mark 400 close to the vehicle and the light collection mark 400 far from the vehicle are different. It is assumed that.

[0161] Therefore, according to the traveling direction display device 600 of this embodiment, other people near the vehicle can see the light collecting mask. When a person sees the map 400, the person 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 have 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. It is easy to determine whether you are trying to move forward or not. Also, in the case of the forward mark, if the two colors overlap, It doesn't look like there's anything wrong with it, and it's easy to tell that they're trying to move forward.

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

[0163] The travel direction display device 600 of this embodiment uses a lens 170 as an optical element. This may also be achieved.

[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 according to the distance from the vehicle. The light collecting marks are configured to display different colors. However, the arrangement in each direction The number of optical devices 100 to be used is not limited. The forward optical device 100F and the left-turn optical device 100 may be provided. The optical devices 100 included in the right-turn optical device 100R and the right-turn optical device 100L are The light collecting marks of different colors are displayed in different pattern display areas on the road surface 300. It may be possible to do so.

[0165] Also, 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 Alternatively, the optical device 100 may be configured to display light-collecting marks in a direction parallel to the optical axis. The heading indicator 600 is adapted to change the orientation of the optical device 100 or a 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 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, if the turn signal is not operated even when the vehicle is traveling at a speed below a certain level, Alternatively, the forward optical device 100F may be configured to be always turned on. In this case, the lamp control 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. The light collecting mark 400 is displayed. 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 highway, if there are no pedestrians around, In an environment where this is not required, the optical device 100 may be configured to light up or flash.

[0169] In this case, the lighting controller 610 is configured to receive position information from a navigation satellite such as a GPS. Using information from the vehicle speed sensor 603 and the device 604, the vehicle is traveling on a highway. 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 road mark indicating the traveling direction of the vehicle 200. However, the light collecting mark 400 is displayed when the vehicle 200 The vehicle 200 is not limited to the front. The vehicle 200 is not limited to the front. 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 is connected to a lighting controller 610. Based on a signal indicating that the reverse gear is enabled from a reverse gear sensor (not shown), A 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, When the vehicle 200 travels in the forward direction, the vehicle 200 is directed to the road surface 300 in front of the vehicle 200. When the vehicle 200 travels in the backward direction, 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] In other words, the traveling direction in which the light collecting mark is displayed is not limited to the forward, left, or right direction. The optical device 100 may be configured to display the image in a plurality of directions, such as in the rear. A light collecting mark is provided for each traveling direction, and a light controller 6 is provided for each traveling direction. 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 determined traveling direction is turned on or blinks.

[0174] In this case, the number of optical devices 100 is smaller than the number of travel 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 a light collection mark is displayed in the specified direction of travel. Example For example, one optical device 1 capable of displaying a light collecting mark in all directions of travel in which the light collecting mark is displayed. 00, or display the light collection mark in all directions ahead. A possible first optical device 100 and a light collecting mark in all directions 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 vehicle 200 on the road surface 300, which is the irradiation surface. A light collection mark with a different color according to the distance is displayed in each of the multiple display areas with different distances. The present invention may be configured to allow the

[0176] <Variation 1> In each of the above embodiments, a light collecting mark expressing a specific intention is placed on the road surface 300, which is the irradiated surface. As a mark, 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, The pattern may be an arrow pattern.

[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 description 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 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, Fig. 33(c) is an x'-y' plan view, Fig. 33(d) is an 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 represented by a point (- A plane parallel to the z'-y' plane passing through point (4, 0, 0) and the z'-y' plane passing through 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 region 121a is the second region 121b, and the right region is the third region 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. A second irradiation image, which is a partial irradiation image, is formed in a region of 100 mm from the third region 121c. A third irradiation image, which is a partial irradiation image, is formed in an area where the x' coordinate is 0 mm to 500 mm.

[0182] The free curved surface shapes of the first region 121a, the second region 121b, and the third region 121c are as follows: The point sequence data of each effective area is shown in Table 571 of FIG. 34, Table 572 of FIG. 35, and FIG. The point sequence data is shown in Table 573 of FIG. 6. Here, each position (x' , y', z')

[0183] Here, in the ray tracing of the illuminance distribution on the irradiation surface 301 obtained by the optical device 100 having the above specifications, The results of the simulation are shown in FIG. 37(a) to FIG. 37(d). 0, among the LEDs with the above light emitting area, Nichia NCDW170C (350l m) was used to form an irradiation image on the irradiation surface 301.

[0184] FIG. 37(a) shows a result of light emitted from a light source 110 being 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 from the second region 121b. FIG. 37(c) shows the illuminance distribution (second irradiation image) 471b of the line display area 401. The illuminance distribution ( FIG. 37(d) shows the first region 121a and the second region 121b. 1b and a third region 121c, an illuminance distribution (light collecting mark) 471 is shown.

[0185] As shown in FIG. 37(d), according to the optical device 100 of this modified example, the power supply 310 on the irradiation surface 301 In the turn display area 401, an arrow-shaped light collecting mark 471 is formed.

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

[0187] In addition, the light-gathering mark expressing 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, to form a different partial irradiation image on the irradiation surface 301. The image is divided into a plurality of divided regions, and each partial irradiation image is combined to realize various figures. It is possible.

[0188] <Variation 2> In the above embodiment and modified example, the optical device 100 includes one light source 110. However, the light source 110 may be provided in a plurality of light sources. 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 first light source 110a and the second light source 11 The positional relationship of 0b with the center of the light emitting region is shown in Figures 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, Fig. 38(c) is an x'-y' plan view, Fig. 38(d) is an 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) is 1.15 mm in the z-axis and z'-axis directions. C) is used, where the center coordinates of the light-emitting area are (0, -12, 13.5), and the central axis of the directional angle is (0, -12, 13.5). The direction is aligned along the y' axis.

[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. We use a 2.5mm LED (nichia NC2W170C). The coordinates of the center of the light-emitting area are is (0, -12, 18.3), and the central axis of the beam direction is aligned 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 edge when it is formed 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. m to 2300 mm, and the x'-axis direction is in the range of -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 FIG. 38(c), the vertex is obtained by dividing the vertex by a plane parallel to the z'-y' plane passing through the origin. The first region 121a and the second region 121b are provided. 21b each have a different free curved surface shape.

[0197] The first area 121a is a part of the pattern display area 401, in which 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 ​​x mm. 'A second exposure image, which is a partial exposure 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 each 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 having the above specifications is The simulation results are shown in Fig. 41. Here, the above LED used for 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 collecting mark) 481a is due to the light of the primary light source 110a, Illuminance distribution (light-collecting mark) 481b is due to the light from 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 may have two arrowhead patterns displayed.

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

[0203] In general, even if the luminous flux of light emitted from the multiple light sources 110 is the same, 0Each 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 the size and other factors, 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 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, for example, determined in advance 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 based on the 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. By setting the luminous flux of the LED used in the second light source 110b to 90 lm, the light-collecting mark 481a The illuminance of 481b is approximately the same as that of 481c.

[0206] The amount of light flux of each light source 110 is adjusted, for example, by controlling the current value. , PWM control, i.e., 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 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 stores the illuminance based on the information from the road surface analysis device 602. The current value for obtaining the determined target illuminance value is determined, and the lighting signal including the current value information is directional controlled. 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 lighting signal including the information is output to the direction determining unit 622.

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

[0210] The present invention is not limited to the above-described embodiments and modifications, and may be modified in various ways. 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. For ease of illustration, the present 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 regions: 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 vehicle, 300: road surface, 301: irradiated surface, 302: irradiated surface, 400: irradiation image (light collecting mark), 401: pattern display area, 402: pattern display area area, 411: light collection mark, 411a: first irradiation image, 411b: second irradiation image, 412: light collection 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 Fold pattern, 450b: right turn pattern, 471: light collecting mark, 471a: first irradiation image, 4 71b: second irradiation image, 471c: third irradiation image, 600: Direction display device, 601: Turn indicator switch, 602: Road surface analysis device, 6 03: Vehicle speed sensor, 604: Position information acquisition device, 610: Lighting 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 direction display device that displays a light collecting mark, A light source; an optical element that focuses the light emitted from the light source onto an irradiation surface in the form of a focusing mark; A lighting controller mounted on the vehicle controls turning on, off, or blinking of the light source; The deflection surface of the optical element, which is a surface that collects 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 regions forms a different partial irradiation image on the irradiation surface, The partial irradiation images are linear in shape, and the inclinations of the lines are different, The optical element focuses the light emitted from the light source onto a specific area on the irradiation surface to form an irradiation image on the irradiation surface. A direction display device characterized by:

2. 2. The heading indicator according to claim 1, The illumination surface is at a finite distance from the optical element. A direction display device characterized by:

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

4. 2. The direction indicator 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 exit surface, The deflection surface is at least one of an exit surface and an entrance surface of the lens. A direction display device characterized by:

5. 2. The direction indicator 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 direction display device characterized by:

6. 2. The direction indicator according to claim 1, The light-collecting mark is a mark expressing a specific intention. A direction display device characterized by:

7. 2. The direction indicator according to claim 1, The light collecting mark has a shape indicating a direction. A direction display device characterized by:

8. 7. A heading indicator according to claim 6, The light collecting mark is in the shape of an arrowhead. A direction display device characterized by:

9. 7. A heading indicator according to claim 6, The light collecting mark is an arrow. A direction display device characterized by:

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

11. 2. The direction indicator according to claim 1, Further comprising a second light source different from the light source; The second light emitted from the second light source and exiting through each region of the deflection surface is The partial irradiation images formed on the irradiation surface are combined to form a light-collecting mark at a position different from that of the irradiation surface. forming a second light collecting mark at the position of the irradiation surface; The second light collecting mark has a specific shape. A direction display device characterized by:

Images