Light-emitting device and light-emitting system

Abstract

To provide a light-emitting device that makes it easy for a user to easily recognize desired information by means of light emission, and to provide a light-emitting system including the same.SOLUTION: A light-emitting device 3 is provided inside a windshield 2a of a straddle type vehicle 2 and is composed of a member different from the windshield 2a. The light-emitting device 3 includes a light source and a light guide body that emits light by guiding the light from the light source to an inner side thereof. Two light-emitting devices 3 are provided on the windshield 2a, one of which is located at a left end of the windshield 2a and the other of which is located at a right end of the windshield 2a.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a light-emitting device provided inside a windshield of a saddle-type vehicle and a light-emitting system including the same.

Background Art

[0002] For example, Patent Document 1 describes a lighting device for a two-wheeler windshield that illuminates the windshield.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the device described in Patent Document 1, since the windshield itself is illuminated, there are limitations in the information notified to the user by the light emission of the windshield, and there is also a possibility that it is difficult for the user to recognize the information.

[0005] The present disclosure has been made in view of the above circumstances, and an object thereof is to provide a light-emitting device that makes it easy for a user to recognize desired information by light emission and a light-emitting system including the same.

Means for Solving the Problems

[0006] To achieve the above object, a light-emitting device according to a first aspect of the present disclosure is a light-emitting device provided inside a windshield of a saddle-type vehicle and formed of a member different from the windshield, comprising a light source and a light guide that guides light from the light source to the inside and emits light, wherein two of them are provided on the windshield, one is located at the left end of the windshield, and the other is located at the right end of the windshield. To achieve the above object, a light-emitting system according to a second aspect of the present disclosure is the light-emitting device, and An ambient light sensor that outputs a signal according to the brightness of received ambient light, A dimming control unit that controls the brightness of the light source according to a signal from the ambient light sensor based on dimming data that is predetermined data indicating the relationship between the brightness of the ambient light and the brightness of the light source, and is provided in the saddle-type vehicle, The dimming control unit is determined according to the setting by the user of the saddle-type vehicle, and controls the brightness of the light source within an automatic dimming range that is the range of the lower limit and the upper limit of the brightness of the light source.

Advantages of the Invention

[0007] According to the present disclosure, it is easy for the user to recognize desired information by light emission.

Brief Description of the Drawings

[0008]

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Embodiments for Carrying Out the Invention

[0009] One embodiment of the present disclosure will be described with reference to the drawings.

[0010] (First Embodiment) The light-emitting system 1 shown in FIG. 1 is a system that is provided on a saddle-type vehicle 2 and notifies a user (the driver of the saddle-type vehicle 2) of various information by the light emission of the light-emitting device 3. The saddle-type vehicle 2 is, for example, a motorcycle (motorized two-wheeler), but any type in which the user sits on a saddle is acceptable, and it may be a trike (motorized three-wheeler) or the like.

[0011] The light-emitting system 1 includes a windshield 2a of the saddle-type vehicle 2, a light-emitting device 3 provided inside the windshield 2a (on the user side) and composed of a member different from the windshield 2a, a control device 4, and an external light sensor 5. The windshield 2a is a front cowl including a light-transmitting portion.

[0012] Two light-emitting devices 3 are provided inside the windshield 2a (on the user side), one is located at the left end of the windshield 2a, and the other is located at the right end of the windshield 2a. Hereinafter, among the two light-emitting devices 3, the one located at the left end is referred to as the light-emitting device 3L, and the one located at the right end is referred to as the light-emitting device 3R, and they may be distinguished by reference numerals. Although the light-emitting devices 3L and 3R are provided on the windshield 2a in a bilaterally symmetric form when viewed from the user, since their respective structures are the same, mainly, both will be described as the light-emitting device 3 without distinction. Note that the light-emitting device 3 shown in FIGS. 3 to 5 shows the light-emitting device 3L located at the left end.

[0013] The light-emitting device 3 is supported by a support 2b provided inside the windshield 2a, and is positioned at a distance from the windshield 2a as shown in FIG. 2.

[0014] As shown in FIGS. 3 to 5, the light-emitting device 3 includes a light guide 10, a case 20, and a circuit board 30 on which a light source 31 is mounted. In FIGS. 4, 8, and 9, the light guide 10 is schematically represented in a perspective view-like manner.

[0015] The light guide 10 guides the light from the light source 31 inside and emits light. The light guide 10 is a member formed in a plate shape from a material having light-transmitting and light-guiding properties such as acrylic.

[0016] The light guide 10 has an inner surface 11 and an outer surface 12 that face each other in the thickness direction T (see FIG. 3) of the light guide 10 and are in a front-back relationship with each other, an upper end surface 13 that connects the upper ends of the inner surface 11 and the outer surface 12, a lower end surface 14 that connects the lower ends of the inner surface 11 and the outer surface 12, and two side surfaces 15, 16. The inner surface 11 is the surface that faces the user when the light-emitting device 3 is mounted on the saddle-type vehicle 2.

[0017] The case 20 includes a first case 21 and a second case 22 that face each other in the thickness direction T of the light guide 10, and is formed of metal or resin. The case 20 is configured by combining the first case 21 and the second case 22.

[0018] The first case 21 and the second case 22 according to the first embodiment are each formed in an L shape. The first case 21 and the second case 22 of this shape support the light guide 10 by sandwiching the lower end portion of the light guide 10 and the lateral end portion of the light guide 10, respectively. The lower end portion of the light guide 10 is a portion having a predetermined width upward from the lower end surface 14 of the light guide 10. The lateral end portion of the light guide 10 is a portion having a predetermined width inward from the side surface 15 or the side surface 16 of the light guide 10 (in the example shown in FIGS. 3 and 4, the portion having a predetermined width inward from the side surface 15).

[0019] The first case 21 and the second case 22 are fixed to each other by known fixing means such as screwing, engaging, fitting, and adhesion, and sandwich the light guide 10 in the thickness direction T. Note that the respective thicknesses (lengths in the thickness direction T) of the first case 21 and the second case 22 are arbitrary. Also, in the first case 21 and the second case 22 according to the first embodiment, a structure may be adopted in which the light guide 10 is supported while compressing the annular elastic material 40 in the thickness direction T as described in the second embodiment to be described later.

[0020] The circuit board 30 is composed of a PCB (Printed Circuit Board) on which the light source 31 is mounted, and is supported by a board support portion 20a provided in the case 20 as shown in FIG. 4. The board support portion 20a may be separate from the case 20 or may be integral with at least one of the first case 21 and the second case 22.

[0021] As shown in FIG. 5, the light source 31 is composed of, for example, an LED (Light Emitting Diode), faces the lower end surface 14 of the light guide 10, and emits light L toward the lower end surface 14 (that is, emits light L upward). Here, the inner surface 11 of the light guide 10 is subjected to a light diffusion process for reflecting and diffusing the light L from the light source 31 guided into the light guide 10 from the lower end surface 14. Thereby, the inner surface 11 emits light (surface-emits light) based on the light L. The light diffusion process is, for example, circular or elliptical dots (either concave or convex) formed on the inner surface 11, but other portions having at least one of the concave and convex shapes may be used. Also, as long as the user can visually recognize the surface emission, the light diffusion process may be applied to at least one of the inner surface 11 and the outer surface 12.

[0022] As shown in FIG. 5, the region of the light guide 10 where the light diffusion process is performed includes a first region R1 and a second region R2 that is farther from the light source 31 than the first region R1. That is, the second region R2 is the region above the first region R1. And the second region R2 has a higher degree of light diffusion than the first region R1. This can be realized, for example, by performing a light diffusion process on the light guide 10 so as to satisfy at least one of (i) making the diameter of the dots formed in the second region R2 larger than that in the first region R1 and (ii) making the density of the dots formed in the second region R2 higher than that in the first region R1. Thereby, it is possible to reduce the unevenness of surface light emission due to the light L emitted from the light source 31 and attenuating more as it advances upward.

[0023] Also, a plurality (three in this embodiment as an example) of light sources 31 are provided. By individually controlling the lighting and blinking operations of each of the plurality of light sources 31 under the control of the control device 4 electrically connected to the circuit board 30, the surface light emitting region (hereinafter referred to as the surface light emitting region) of the light guide 10 changes. Note that the plurality of light sources 31 may emit light of the same color or may include LEDs that emit light of different colors from each other.

[0024] FIG. 8 shows an example in which the light emission pattern of the light guide 10 is changed by the surface light emitting regions A1, A2, A3 that switch so as to move from right to left in time series in the light emitting device 3L located at the left end of the windshield 2a. Thereby, for example, it is possible to notify the user that an object is approaching from the right side of the saddle type vehicle 2. Although not shown in FIG. 8, the light emission pattern of the light guide 10 can be similarly changed in the light emitting device 3R located at the right end of the windshield 2a.

[0025] FIG. 9 shows an example of a light emission pattern of the light guide 10 by a combination of surface light emission regions B1, B2, B3 that switch so as to move from right to left in time series in the light emitting device 3L, and C1, C2, C3 that switch so as to move from left to right in time series in the light emitting device 3R correspondingly. According to this example, it is possible to notify the user that some object is approaching from the front of the saddle-type vehicle 2. In FIG. 9, the surface light emission regions B1, B2, B3 in the light emitting device 3L are each formed in a strip shape. This mode can be realized, for example, by not performing a light diffusion process on a portion corresponding to the boundary between adjacent regions among the surface light emission regions B1, B2, B3, or by forming a light shielding layer on the portion corresponding to the boundary. The same applies to the surface light emission regions C1, C2, C3 in the light emitting device 3R.

[0026] Also, although not shown, by causing the light guide 10 of the light emitting device 3L to emit surface light over the entire area while not causing the light guide 10 of the light emitting device 3R to emit light, it is possible to notify the user of information regarding the right direction. Conversely, by causing the light guide 10 of the light emitting device 3R to emit surface light over the entire area while not causing the light guide 10 of the light emitting device 3L to emit light, it is possible to notify the user of information regarding the left direction. Further, by causing the light guides 10 of both the light emitting device 3R and the light emitting device 3L to emit surface light over the entire area, it is possible to notify the user of information regarding the forward direction.

[0027] The light guide 10 not only emits surface light as described above, but also the upper end surface 13 and the side surface 16 emit light in response to the lighting or flashing of the plurality of light sources 31. In particular, in order to effectively allow the user to visually recognize the light emission of the upper end surface 13, as shown in FIG. 6, the case 20 (that is, the first case 21 and the second case 22) is provided so as to incline the light guide 10 from the vertical direction V toward the user of the saddle-type vehicle 2. The θ shown in FIG. 6 indicates the inclination angle of the case 20 with respect to the vertical direction V. Here, the case 20 is supported by a support 2b provided inside the windshield 2a via a pedestal 20b located below it. For example, due to the shape of this pedestal 20b, the case 20 is provided so as to incline the light guide 10 from the vertical direction V toward the user of the saddle-type vehicle 2. Note that the pedestal 20b may be integral with or separate from the case 20.

[0028] Furthermore, as a modification shown in FIG. 7, the light guide 10 may be formed such that the angle formed by the inner surface 11 and the upper end surface 13 is an acute angle. Thereby, the light L from the light source 31 reflected by the upper end surface 13 becomes more likely to be directed by the user's viewpoint P, and the light emission of the upper end surface 13 can be effectively visually recognized by the user.

[0029] The control device 4 is a computer that controls the operation of the light emitting device 3, and is composed of a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), a drive circuit for driving the light source 31, and the like. Note that the ROM includes an EEPROM (Electrically Erasable Programmable ROM). For example, the control device 4 individually controls the lighting and flashing operations of each of the plurality of light sources 31.

[0030] Further, the control device 4 is connected to various ECUs (Electric Control Units) mounted on the saddle-type vehicle 2 through CAN (Controller Area Network) communication, and executes various controls by using the data detected by each other. For example, a well-known ADAS (Advanced Driver Assistance System) is constructed on the saddle-type vehicle 2 by the control device 4 and various ECUs. With this ADAS, various processes such as FCW (Front Collision Warning), LDW (Lane Departure Warning), and BSD (Blind Spot Detection) can be executed, and the control device 4 changes the light emission pattern of the light guide 10 according to these processes. Further, the control device 4 acquires a signal from the external light sensor 5 described below.

[0031] The external light sensor 5 is, for example, an illuminance sensor that detects the illuminance of external light, and outputs a signal corresponding to the brightness (illuminance) of the received external light to the control device 4. In the ROM of the control device 4, there is stored dimming data that is predetermined data and shows the relationship between the brightness of external light (the value indicated by the signal S from the external light sensor 5) and the brightness (luminance B) of the light source 31, which is shown as a curve as in FIG. 10. The control device 4 functions as a dimming control unit that controls the brightness of the light source 31 based on the signal S from the external light sensor 5 and the dimming data.

[0032] When a set value Q indicating the brightness preferred by the user is set from the user via input means (not shown), the control device 4 determines an automatic dimming range R based on the set value Q. The automatic dimming range R is a range that defines the lower limit brightness Bmin and the upper limit brightness Bmax when the light source 31 emits light (synonymous with a range that defines the signal lower limit value Smin corresponding to the lower limit brightness Bmin and the signal upper limit value Smax corresponding to the upper limit brightness Bmax). Specifically, when the value indicated by the signal S from the ambient light sensor 5 is equal to or greater than the signal lower limit value Smin and equal to or less than the signal upper limit value Smax, the control device 4 causes the light source 31 to emit light at a brightness B corresponding to the value indicated by the signal S in the dimming data. Further, when the value indicated by the signal S from the ambient light sensor 5 is less than the signal lower limit value Smin, the control device 4 causes the light source 31 to emit light at the lower limit brightness Bmin as a fixed value. Further, when the value indicated by the signal S from the ambient light sensor 5 is greater than the signal upper limit value Smax, the control device 4 causes the light source 31 to emit light at the upper limit brightness Bmax as a fixed value. Thereby, in the light emitting device 3, light emission reflecting the user's preference is performed, which is user-friendly. That is, the control device 4 functioning as a dimming control unit is determined according to the setting by the user of the saddle type vehicle 2, and controls the brightness of the light source 31 within the automatic dimming range R which is the range of the lower limit and the upper limit of the brightness of the light source 31.

[0033] The description of the first embodiment is above. Subsequently, the light emitting device 3v according to the second embodiment will be described with reference to FIGS. 11 to 14. Hereinafter, for configurations having the same functions as those in the first embodiment, the same reference numerals as those in the first embodiment will be used, and the description will focus on the differences from the first embodiment.

[0034] (Second Embodiment) The light emitting device 3v according to the second embodiment includes a light guide 10 and a circuit board 30 on which the light source 31 is mounted (not shown in FIGS. 11 to 14). Further, the light emitting device 3v includes a case 20 having a shape different from that of the first embodiment and an annular elastic member 40 shown in FIGS. 12 to 14.

[0035] The case 20 includes a first case 21 and a second case 22 that face each other in the thickness direction T of the light guide 10. The case 20 is formed by combining the first case 21 and the second case 22. The first case 21 and the second case 22 according to the second embodiment support the light guide 10 by sandwiching the lower end portion of the light guide 10 as shown in FIGS. 11 and 12. The first case 21 and the second case 22 are fixed to each other by known fixing means such as screwing, engaging, fitting, and adhesion, and sandwich the light guide 10 in the thickness direction T.

[0036] The annular elastic material 40 is an O-ring made of an elastomer such as rubber and is provided to surround the light guide 10. The annular elastic material 40 functions as a sealing material that fills the space between the light guide 10 and each of the first case 21 and the second case 22. Specifically, the annular elastic material 40 is fitted into a groove 10a formed in the light guide 10. The groove 10a is provided over the entire circumference of the portion of the light guide 10 that is covered by the first case 21 and the second case 22. As shown in FIG. 12, the first case 21 and the second case 22 support the light guide 10 while compressing the annular elastic material 40 in the thickness direction T.

[0037] As shown in FIG. 14, the first case 21 has a first contact wall 21a that contacts the annular elastic material 40, and the second case 22 has a second contact wall 22a that contacts the annular elastic material 40. The distance (the distance in the thickness direction T) between the portion of the first contact wall 21a facing the side surface 15 of the light guide 10 and the portion of the second contact wall 22a facing the side surface 15 becomes narrower as it moves away from the side surface 15. Similarly, the distance (the distance in the thickness direction T) between the portion of the first contact wall 21a facing the side surface 16 of the light guide 10 and the portion of the second contact wall 22a facing the side surface 16 becomes narrower as it moves away from the side surface 16. In this way, in the portions corresponding to the side surface 15 and the side surface 16 respectively, by making the shape of the chamber formed by the first contact wall 21a and the second contact wall 22a tapered, it is possible to suppress the force applied to the annular elastic material 40 from escaping in a direction perpendicular to the thickness direction T, which is the main compression direction, and effectively exert the sealing function of the annular elastic material 40.

[0038] Further, among the first contact wall 21a and the second contact wall 22a, portions C1 to C4 corresponding to the four corners of the light guide 10 are formed in a curved surface shape (R shape). Thereby, when the annular elastic member 40 is compressed by the first case 21 and the second case 22, it is possible to suppress the generation of a gap between the annular elastic member 40 and each of the first contact wall 21a and the second contact wall 22a. As a result, the waterproof effect is good. This is the description of the second embodiment.

[0039] The present invention is not limited by the above embodiments and drawings. Modifications (including deletion of components) can be appropriately made without changing the gist of the present invention.

[0040] The light-emitting devices 3, 3v included in the light-emitting system 1 described above can be described from the viewpoints described in the following Appendices 1 to 3.

[0041] (Appendix 1) (Appendix 1-1) A light-emitting device provided inside a windshield of a saddle-type vehicle and composed of a member different from the windshield, comprising a light source and a light guide that guides light from the light source to the inside and emits light, provided in two on the windshield, one located at the left end of the windshield and the other located at the right end of the windshield, Light-emitting device.

[0042] According to the light-emitting device described in Appendix 1-1, since the light-emitting patterns of the two light-emitting devices, which are composed of members different from the windshield, can be used, it is easy for the user to recognize desired information by the light emission.

[0043] (Appendix 1-2) There are a plurality of the light sources, and the lighting and blinking operations of each are individually controlled, The light-emitting device described in Appendix 1-1.

[0044] According to the light-emitting device described in Appendix 1-2, since a dynamic light-emitting pattern of the light guide can be realized, It is possible to notify the user of various information.

[0045] (Appendix 1-3) The light guide includes a surface facing the user of the saddle-type vehicle, emits surface light based on light from a plurality of the light sources, By individually controlling the lighting and blinking operations of each of the plurality of the light sources, the area where the light guide emits surface light changes. The light-emitting device according to Appendix 1-2.

[0046] According to the light-emitting device described in Appendix 1-3, it is easier for the user to notice the notification by light emission.

[0047] (Appendix 1-4) The light-emitting device according to any one of Appendices 1-1 to 1-3, An ambient light sensor that outputs a signal according to the brightness of the received ambient light, A dimming control unit that is predetermined data and controls the brightness of the light source according to the signal from the ambient light sensor based on dimming data indicating the relationship between the brightness of the ambient light and the brightness of the light source, and is provided on the saddle-type vehicle. A lighting system, The dimming control unit is determined according to the setting by the user of the saddle-type vehicle, and controls the brightness of the light source within an automatic dimming range that is the range of the lower limit and the upper limit of the brightness of the light source. Lighting system.

[0048] According to the lighting system described in Appendix 1-4, as described above, it is user-friendly.

[0049] (Appendix 2) (Appendix 2-1) A light guide that guides light from a light source to the inside and emits light, and is formed in a plate shape, A first case and a second case that face each other in the thickness direction of the light guide and sandwich the light guide, An annular elastic material that is fitted into a groove formed in the light guide and surrounds the light guide, and is provided. The first case and the second case support the light guide while compressing the annular elastic material in the thickness direction. Light-emitting device.

[0050] According to the light-emitting device described in Supplementary Note 2-1, the light guide can be stably supported while securing a light-emitting portion.

[0051] (Supplementary Note 2-2) The first case has a first contact wall that contacts the annular elastic material. The second case has a second contact wall that contacts the annular elastic material. The distance between the portion of the first contact wall facing the side surface of the light guide and the portion of the second contact wall facing the side surface becomes narrower as it moves away from the side surface. The light-emitting device described in Supplementary Note 2-1.

[0052] According to the light-emitting device described in Supplementary Note 2-2, as described above, the sealing function of the annular elastic material can be effectively exerted.

[0053] (Supplementary Note 2-3) Among the first contact wall and the second contact wall, the portions corresponding to the four corners of the light guide are formed in a curved surface shape. The light-emitting device described in Supplementary Note 2-2.

[0054] According to the light-emitting device described in Supplementary Note 2-3, as described above, the waterproof effect is good.

[0055] (Supplementary Note 2-4) It is provided inside the windshield of a saddle-type vehicle. The first case and the second case support the light guide by sandwiching at least the lower end portion of the light guide. The light-emitting device according to any one of Supplementary Notes 2-1 to 2-3.

[0056] According to the light-emitting device of Supplementary Note 2-4, the application to a saddle-type vehicle is simple.

[0057] (Supplementary Note 3) (Appended Note 3-1) A light-emitting device provided inside the windshield of a saddle-type vehicle, comprising a light guide formed in a plate shape that guides light from a light source to the inside and emits light, a first case and a second case that face each other in the thickness direction of the light guide, and a circuit board located inside the first case and the second case and on which the light source is mounted. The light source faces the lower end surface of the light guide, and the first case and the second case support the light guide by sandwiching at least the lower end portion of the light guide. Light-emitting device.

[0058] According to the light-emitting device described in Appended Note 3-1, since the light guide can be made to emit light instead of the windshield itself, it is easy for the user to recognize the desired information by the light emission.

[0059] (Appended Note 3-2) The first case and the second case are provided so as to incline the light guide from the vertical direction toward the user of the saddle-type vehicle. The light-emitting device described in Appended Note 3-1.

[0060] According to the light-emitting device described in Appended Note 3-2, as described above, the light emission from the upper end surface of the light guide can be effectively visually recognized by the user.

[0061] (Appended Note 3-3) The light guide has an inner surface and an outer surface that face each other in the thickness direction of the light guide and are in a front-back relationship with each other. At least one of the inner surface and the outer surface is subjected to a light diffusion process for diffusing the light from the light source guided into the light guide. The region of the light guide where the light diffusion process is performed includes a first region and a second region that is farther from the light source than the first region. The second region has a higher degree of light diffusion than the first region. The light-emitting device described in Appended Note 3-1 or 3-2.

[0062] According to the light-emitting device described in Supplementary Note 3-3, it is possible to reduce the unevenness of surface light emission caused by the light emitted from the light source and attenuating.

[0063] (Supplementary Note 3-4) The light guide has an upper end surface connecting the upper ends of each of the inner surface and the outer surface, The angle formed by the inner surface and the upper end surface is an acute angle. The light-emitting device described in Supplementary Note 3-3.

[0064] According to the light-emitting device described in Supplementary Note 3-4, as described above, the light emission from the upper end surface can be effectively visually recognized by the user.

[0065] In the above description, for the sake of facilitating the understanding of the present disclosure, the description of known technical matters has been appropriately omitted.

[0066] This invention can be implemented in various embodiments and variations without departing from the broad spirit and scope of this invention. Also, the above-described embodiments are for explaining this invention and do not limit the scope of this invention. That is, the scope of this invention is indicated by the claims rather than the embodiments. And various modifications made within the scope of the claims and within the scope of the meaning of the invention equivalent thereto are regarded as being within the scope of this invention.

Explanation of Reference Numerals

[0067] 1... Light-emitting system 2... Saddle-type vehicle, 2a... Windshield, 2b... Support 3, 3v... Light-emitting device 4... Control device 5... External light sensor 10... Light guide, 10a... Groove 11... Inner surface, 12... Outer surface, 13... Upper end surface, 14... Lower end surface, 15, 16... Side surfaces 20... Case, 20a... Substrate support portion, 20b... Pedestal 21... First case, 21a... First contact wall 22... Second case, 22a... Second contact wall 30…Circuit board, 31…Light source 40…Annular elastic material R1…First region, R2…Second region L…Light, A1~A3, B1~B3, C1~C3…Surface light-emitting regions T…Thickness direction, V…Vertical direction, P…Viewpoint, R…Automatic dimming range S…Signal, Smin…Signal lower limit value, Smax…Signal upper limit value B…Luminance, Bmin…Lower luminance, Bmax…Upper luminance C1~C4…Parts corresponding to the four corners of the light guide 10

Claims

1. A lighting device provided inside a windshield of a saddle-type vehicle and composed of a member separate from the windshield, comprising a light source and a light guide that guides the light from the light source inside and emits light, wherein two of them are provided on the windshield, one is located at the left end of the windshield, and the other is located at the right end of the windshield, lighting device.

2. There are a plurality of the light sources, and the lighting and flashing operations of each of them are individually controlled, The lighting device according to Claim 1.

3. The light guide includes a surface facing the user of the saddle-type vehicle, emits surface light based on the light from a plurality of the light sources, and the area where the light guide emits surface light changes by individually controlling the lighting and flashing operations of each of the plurality of light sources, The lighting device according to Claim 2.

4. The lighting device according to any one of Claims 1 to 3, an external light sensor that outputs a signal according to the brightness of the received external light, and a dimming control unit that controls the brightness of the light source according to the signal from the external light sensor based on dimming data which is predetermined data indicating the relationship between the brightness of the external light and the brightness of the light source, and is provided on the saddle-type vehicle, wherein the dimming control unit is determined according to the setting by the user of the saddle-type vehicle, and controls the brightness of the light source within an automatic dimming range which is the range of the lower limit and the upper limit of the brightness of the light source, lighting system.

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