Notification device

Abstract

To provide a notification device for notifying an observer outside a vehicle of a travel direction of the vehicle.SOLUTION: A notification device provided on a vehicle includes a left side display part which is positioned on a cabin inner side surface of a left front pillar and emits light toward outside a vehicle on the right side of the vehicle, a right side display part which is positioned on a cabin inner side surface of a right front pillar and emits light toward outside a vehicle on the left side of the vehicle, and a control part for controlling emission of light on the left side display part and the right side display part, wherein the control part executes left turn display to make the left side display part emit light when a left direction indicator is lighted, and executes right turn display to make the right side display part emit light when a right direction indicator is lighted.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an alarm device. [Background technology]

[0002] There is known a notification device that notifies a vehicle occupant of the operation of a turn signal provided in a vehicle. Patent Document 1 discloses a notification device in which decorative lights are provided on both the left and right pillars and the decorative lights emit light together with the turn signal. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-202700 Summary of the Invention [Problem to be solved by the invention]

[0004] The signal lights of a vehicle's turn signal indicators are located at the front of the vehicle, at both the left and right ends. Therefore, at an intersection with poor visibility, the signal lights of a vehicle attempting to turn left (or right) are difficult to see for drivers of vehicles approaching the intersection from the right (or left). Conventional notification devices notify vehicle occupants of the vehicle's traveling direction, and the amount of light must be sufficiently reduced so as not to interfere with the driver's driving. As a result, conventional notification devices cannot be observed by drivers of vehicles outside the vehicle.

[0005] The present invention has been proposed in view of the above-mentioned conventional circumstances, and has as its object to provide a notification device that notifies an observer outside the vehicle of the vehicle's traveling direction. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides the following means. [1] An alarm device provided in a vehicle cabin, a left display unit that is located on a side surface of the left front pillar inside the vehicle interior and emits light toward the outside of the vehicle on the right side of the vehicle; a right-side display unit that is located on a side surface of the right front pillar inside the vehicle interior and emits light toward the left side of the vehicle exterior; a control unit that controls the emission of light from the left display unit and the right display unit, The control unit When the left signal lamp of the turn signal is turned on, a left turn indication is executed by emitting light on the left display unit, When the right signal lamp of the turn indicator is turned on, a right turn indication is executed by emitting light on the right display unit. Alarm device. [2] The left-side display unit emits light toward a front windshield of the vehicle when the left-turn display is executed, The right-side display unit emits light toward the front windshield of the vehicle when the right turn display is executed. [3] When the left turn display is executed, the left side display unit emits light to the right in a range of 0° to 120° relative to the front-to-rear direction of the vehicle, The right-side display unit emits light to the left in a range of 0° to 120° relative to the fore-and-aft direction of the vehicle when the right turn display is executed. [4] The display device further includes a projection device that projects light toward the left display unit and the right display unit, The left display unit and the right display unit each have a first reflecting surface that reflects light projected from the projection device and emits the light toward the outside of the vehicle. [5] The left display unit and the right display unit each have a second reflective surface that reflects the light projected from the projection device toward the driver. [6] The notification device according to [4] or [5], wherein the projection device is arranged between the rearview mirror and the front windshield in the longitudinal direction of the vehicle. [7] The projection device is a light source unit that emits laser light; The notification device according to [4] or [5], further comprising: a scanning unit that forms a drawing pattern by scanning the laser light. [8] The left display unit has a light source unit disposed inside the left front pillar, The right-side display unit has a light source unit disposed inside the right front pillar. [9] The vehicle further includes a first detection unit that detects the driver's line of sight, The control unit reduces the amount of light emitted from the display unit when the driver D's line of sight detected by the first detection unit is directed toward either the left display unit or the right display unit, whichever emits light.An alarm device as described in [1].

[10] Further comprising a second detection unit that detects an object outside the vehicle; The control unit When the left signal light is on and the second detection unit detects the object on the right side of the vehicle, the left turn indication is executed, The warning device described in [1] executes the right turn indication when the right signal light is on and the second detection unit detects the object on the left side of the vehicle.

[11] A third detection unit that detects the brightness of the left side and the right side of the vehicle, respectively; a left side lamp capable of irradiating light onto the left side surface; a right side illumination lamp capable of irradiating light onto the right side surface, The control unit When the brightness of the right side detected by the third detection unit is equal to or less than a threshold value when the left turn indication is executed, the right side illumination lamp is turned on; The warning device according to [1], wherein the left side lamp is illuminated when the brightness of the left side detected by the third detection unit is equal to or less than a threshold value when the right turn indication is executed. [Effects of the Invention]

[0007] As described above, according to the present invention, it is possible to provide a notification device that notifies an observer outside the vehicle of the traveling direction of the vehicle. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing the front side of a vehicle interior in which a notification device according to an embodiment is provided. [Figure 2] FIG. 2 is a plan view of a vehicle in which the notification device of the embodiment is provided. [Figure 3] FIG. 3 is a schematic diagram showing the interior of a vehicle in which a notification device according to an embodiment is provided. [Figure 4] FIG. 4 is a schematic diagram showing the configuration of a projection unit according to an embodiment. [Figure 5] FIG. 5 is a schematic diagram showing a state immediately before a vehicle equipped with a notification device according to an embodiment enters an intersection. [Figure 6] FIG. 6 is a diagram showing the vehicle shown in FIG. 5 as observed from another vehicle approaching the intersection from the right side of the vehicle. [Figure 7] FIG. 7 is a schematic diagram showing a state immediately after a vehicle equipped with a notification device of one embodiment has entered an intersection. [Figure 8] FIG. 8 is a diagram showing the vehicle shown in FIG. 7 as observed from another vehicle approaching the intersection from the right side of the vehicle. [Figure 9] FIG. 9 is a flowchart illustrating a processing procedure when the control unit of the notification device performs left-side display according to an embodiment. [Figure 10] FIG. 10 is a schematic cross-sectional view of a left display portion of a modified notification device. [Figure 11] FIG. 11 is a schematic cross-sectional view of a right display portion of a modified notification device. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings used in the following description, the dimensions of the components may be shown at different scales to make them easier to see, and the dimensional ratios of the components may not necessarily be the same as in reality.

[0010] Additionally, each figure shows XYZ coordinates as appropriate. The X axis is the longitudinal direction of the vehicle 2, with the +X side being the front and the -X side being the rear. The Y axis is the transverse direction of the vehicle 2, with the +Y side being the left and the -Y side being the right. The Z axis is the vertical direction, with the +Z side being the top and the -Z side being the bottom.

[0011] <Vehicle> Fig. 1 is a diagram showing the front side of a vehicle interior B of a vehicle 2 in which a notification device 1 of the present embodiment is installed. Fig. 2 is a plan view of the vehicle 2 in which a notification device 1 of the present embodiment is installed.

[0012] In this embodiment, the case where the notification device 1 is installed in the vehicle 2 is described as a standard passenger car, but the vehicle 2 on which the notification device 1 is installed is not limited to this embodiment as long as it has front pillars 12L, 12R, which will be described later. The notification device 1 may also be installed in a large vehicle such as a truck or a bus, or in a heavy vehicle such as a backhoe.

[0013] As shown in FIG. 1, the vehicle 2 has an instrument panel 10, a steering wheel 14, a front window glass 11, a rearview mirror 15, a left front pillar 12L, and a right front pillar 12R, which are installed in front of the driver D, and side window glasses 13, a left side mirror 16L, and a right side mirror 16R, which are arranged on the left and right sides of the driver D.

[0014] The instrument panel 10 extends in the left-right direction Y in front of the driver D. The steering wheel 14 is disposed rearward of the instrument panel 10 (i.e., on the driver D side). The left front pillar 12L extends upward from the left end of the instrument panel 10. The right front pillar 12R extends upward from the right end of the instrument panel 10. The front window glass 11 is located above the instrument panel 10. The front window glass 11 is located between the left front pillar 12L and the right front pillar 12R in the left-right direction Y. A rearview mirror 15 is fixed to the vehicle interior B above the front window glass 11. Two side window glasses 13 are installed in the left and right side doors 19 of the driver's seat, respectively.

[0015] 2, the left side mirror 16L protrudes leftward from the side door 19 in front of the left side window glass 13. Similarly, the right side mirror 16R protrudes rightward from the side door 19 in front of the right side window glass 13.

[0016] The vehicle 2 also has turn indicators 18. The turn indicators 18 include a left signal light 18L and a right signal light 18R. The left signal light 18L is located at the left end of the front of the vehicle 2. On the other hand, the right signal light 18R is located at the right end of the front of the vehicle 2. The left signal light 18L and the right signal light 18R are turned on when the driver D operates an operating lever (not shown).

[0017] <Alarm device> As shown in FIG. 1, the alarm device 1 includes a left display unit 20L, a right display unit 20R, a projection device 30, a first detection unit 41, a second detection unit 42, a third detection unit 43, a left lighting lamp 50L, a right lighting lamp 50R, and a control unit 70.

[0018] In this embodiment, the left display unit 20L, the right display unit 20R, the projection device 30, the first detection unit 41, the second detection unit 42, and the control unit 70 are arranged inside the vehicle interior B of the vehicle 2. On the other hand, the third detection unit 43, the left lamp 50L, and the right lamp 50R are arranged outside the vehicle A of the vehicle 2. Furthermore, the control unit 70 is arranged inside a control box (not shown) of the vehicle 2.

[0019] <Left and right display sections> The left display unit 20L is located on the interior side of the left front pillar 12L. The main function of the left display unit 20L in this embodiment is to notify those outside the vehicle A that the vehicle 2 is turning left. Similarly, the right display unit 20R is located on the interior side of the right front pillar 12R. The main function of the right display unit 20R in this embodiment is to notify those outside the vehicle A that the vehicle 2 is turning right. In the following description, when there is no need to distinguish between the left display unit 20L and the right display unit 20R, they will simply be referred to as display unit 20.

[0020] Fig. 3 is a schematic diagram showing the interior B of the vehicle 2 in which the left display unit 20L is provided. The structure of the left display unit 20L will be described below with reference to Fig. 3. The right display unit 20R has a structure that is approximately symmetrical to the left display unit 20L, and is therefore not shown in the figure.

[0021] In this embodiment, the left display unit 20L is a plate-shaped screen attached to the side surface of the left front pillar 12L. The left display unit 20L has a first reflecting surface 21 and a second reflecting surface 22. In this embodiment, the first reflecting surface 21 and the second reflecting surface 22 are substantially flat surfaces. However, the first reflecting surface 21 and the second reflecting surface 22 may also be curved surfaces.

[0022] The first reflecting surface 21 of the left display unit 20L is a surface facing diagonally forward to the right. The first reflecting surface 21 reflects the light projected from the projection device 30 and emits it toward the outside of the vehicle A. More specifically, the first reflecting surface 21 emits at least a portion of the light toward the front windshield 11 of the vehicle 2. This light passes through the front windshield 11 and reaches an observer outside the vehicle A. This allows the left display unit 20L to emit light toward an observer outside the vehicle A who is located on the right front side of the vehicle 2.

[0023] Furthermore, the left-side display unit 20L may emit a portion of the light toward the side window glass 13 on the right side of the vehicle 2. This light passes through the side window glass 13 and reaches an observer outside the vehicle A. This allows the left-side display unit 20L to emit light toward an observer outside the vehicle A who is located on the right rear side of the vehicle 2.

[0024] The second reflecting surface 22 is a surface facing diagonally rear right. That is, the first reflecting surface 21 and the second reflecting surface 22 have different inclinations with respect to the front-rear direction X. The second reflecting surface 22 reflects the light projected from the projection device 30 and emits it toward the driver D. Here, "emit light toward the driver D" means that the emitted light is reflected toward the eyes of the driver D so that it enters the field of vision of the driver D.

[0025] The light emitted from the right-side display unit 20R follows a path that is laterally reversed from that of the light emitted from the left-side display unit 20L. That is, the right-side display unit 20R emits at least a portion of the light reflected by the first reflecting surface 21 toward the front windshield 11 of the vehicle 2. This allows the right-side display unit 20R to emit light toward an observer located outside the vehicle A and on the left front side of the vehicle 2. Furthermore, another portion of the light reflected by the first reflecting surface 21 of the right-side display unit 20R is emitted toward the left side windshield 13 of the vehicle 2. This allows the right-side display unit 20R to emit light toward an observer located outside the vehicle A and on the left rear side of the vehicle 2. Furthermore, the right-side display unit 20R emits the light reflected by the second reflecting surface 22 toward the driver D.

[0026] <Projection device> 3, the projection device 30 projects light toward the left display unit 20L and the right display unit 20R. In this embodiment, the projection device 30 is installed in front of the rearview mirror 15 (+X side). Therefore, the projection device 30 is located at the center of the front windshield 11 in the left-right direction Y. The projection device 30 is also fixed to the upper part of the front windshield 11, on a surface facing the vehicle interior B side.

[0027] The projection device 30 has a pair of projection units 31, a case 35 that houses the pair of projection units 31, and a bracket 36. The bracket 36 is fixed to the surface of the front windshield 11 that faces the interior B of the vehicle. The case 35 is fixed to the end of the bracket 36 on the rear side (-X side).

[0028] The pair of projection units 31 are connected to and controlled by the control unit 70. The left projection unit 31L, which is one of the pair of projection units 31, projects light toward the left-side display unit 20L. The right projection unit 31R, which is the other of the pair of projection units 31, projects light toward the right-side display unit 20R.

[0029] 4 is a schematic diagram showing the configuration of the projection unit 31. The projection unit 31 has a light source section 32 and a scanning section 33. That is, the projection device 30 has the light source section 32 and the scanning section 33. The light source section 32 and the scanning section 33 are each connected to the control section 70.

[0030] The light source unit 32 of this embodiment emits laser light L. In this embodiment, the laser light L emitted from the light source unit 32 is, for example, amber. The light source unit 32 may include a plurality of light sources that emit light of different wavelengths (for example, red light, green light, and blue light). In this case, the light source unit 32 combines the light emitted from each light source using a dichroic mirror or the like. The combined light has a color tone (emission color) according to the ratio of the light emitted from each light source. The configuration of the light source unit 32 of this embodiment is an example, and the light emitted by the light source unit 32 does not have to be laser light L. The light source unit 32 may be an LED light source or a light source such as a mercury lamp.

[0031] The scanning unit 33 is composed of a MEMS (Micro-Electro-Mechanical Systems) mirror (hereinafter referred to as the "MEMS mirror 33"). The MEMS mirror 33 has at least a mirror 33a that reflects the laser light L emitted from the light source unit 32, two torsion bars (not shown) that twist due to the vibration of a piezoelectric element formed on both sides of the mirror 33a, a bellows-shaped meander portion 33b that moves due to the vibration of the piezoelectric element, and an outer frame 33d that supports the meander portion 33b.

[0032] In FIG. 4, central axes AX and AY are set perpendicular to each other within the plane of the MEMS mirror 33, and the direction of oscillation around one central axis AX is the AY direction, and the direction of oscillation around the other central axis AY is the AX direction.

[0033] The mirror 33a is oscillated in the AY direction via a torsion bar that connects the mirror 33a and the inner frame 33c in the AX direction, so that the laser light L reflected by the mirror 33a scans in a direction substantially parallel to the AX direction.

[0034] On the other hand, the mirror 33a is swung in the AX direction via the meander portion 33b, so that the laser light L reflected by the mirror 33a is scanned in a direction substantially parallel to the AY direction.

[0035] Therefore, in the MEMS mirror 33, the mirror 33a is swung two-dimensionally within its plane, and the laser light L reflected by this mirror 33a is scanned two-dimensionally. In this way, the MEMS mirror 33 can form a drawing pattern P and project the drawing pattern P onto the display unit 20.

[0036] The projection device 30 of this embodiment projects light including the drawing pattern P onto the first reflecting surface 21 or the second reflecting surface 22 of the left display unit 20L and the right display unit 20R shown in FIG. 3. The light incident on the first reflecting surface 21 is emitted toward the outside of the vehicle A. In this case, the drawing pattern P formed by the projection device 30 is visible to an observer outside the vehicle A. The light incident on the second reflecting surface 22 is emitted toward the driver D. In this case, the drawing pattern P formed by the projection device 30 is visible to the driver D.

[0037] In this embodiment, a case has been described in which a device having a MEMS mirror 33 is used as the projection device 30. However, other devices such as a liquid crystal projector may also be used as the projection device 30.

[0038] <First detection unit> 1 is a driver monitoring system (DMS). The first detection unit 41 is installed, for example, on a surface of the instrument panel 10 facing the driver D, approximately in the center in the left-right direction Y. The first detection unit 41 may also be installed below the rearview mirror 15.

[0039] The first detection unit 41 includes, for example, an imaging device that captures an image of the face of the driver D, and an infrared irradiation unit that irradiates the eyes of the driver D with infrared light. The first detection unit 41 performs image processing and analysis on the imaging information acquired by the imaging device. In the image processing and analysis, for example, the direction of the face of the driver D is detected based on the facial image of the driver D, and the direction of the driver D's line of sight is determined by irradiating the eyes of the driver D with infrared light from the infrared irradiation unit.

[0040] The first detection unit 41 is connected to the control unit 70. The first detection unit 41 transmits information on the facial direction and line of sight of the driver D as a detection signal to the control unit 70. Note that the first detection unit 41 may send image information captured by an imaging device to the control unit 70, and the control unit 70 may perform image processing and analysis.

[0041] <Second detection unit> The second detection unit 42 includes one or more detection devices, such as LiDAR (Light Detection and Ranging), radar, sonar, and an imaging device. The second detection unit 42 is installed, for example, below the rearview mirror 15 together with the projection device 30. The second detection unit 42 may also have detection devices disposed at the four corners of the exterior of the vehicle. The second detection unit 42 may also be installed on the exterior surface of the vehicle 2. Furthermore, the second detection unit 42 may also be installed in front of the rearview mirror 15 together with the projection device 30. In this case, the second detection unit 42 may be housed in the case 35 of the projection device 30.

[0042] The second detection unit 42 detects an object outside the vehicle A. An example of an object outside the vehicle A that is to be detected by the second detection unit 42 is another vehicle located within a predetermined range outside the vehicle A. Another example of an object outside the vehicle A that is to be detected by the second detection unit 42 is a pedestrian located within a predetermined range outside the vehicle A.

[0043] The second detection unit 42 detects an object outside the vehicle A and derives the distance to the detected object. The second detection unit 42 is connected to the control unit 70. The second detection unit 42 transmits information such as the size of the object outside the vehicle A, the distance to the object outside the vehicle A, and the moving speed of the object outside the vehicle A to the control unit 70 as a detection signal.

[0044] <Third detection unit> As shown in FIG. 2, the third detection unit 43 has a left illuminance meter 43L and a right illuminance meter 43R. The left illuminance meter 43L is attached to the left side mirror 16L of the vehicle 2. The left illuminance meter 43L detects the illuminance on the outer surface of the left side door 19, for example. Similarly, the right illuminance meter 43R detects the illuminance on the outer surface of the right side door 19, for example. That is, the third detection unit 43 detects the brightness of the left side 2L and right side 2R of the vehicle 2, respectively.

[0045] The third detector 43 is connected to the controller 70. The third detector 43 transmits information on the brightness of the left side surface 2L and the right side surface 2R of the vehicle 2 to the controller 70 as a detection signal.

[0046] <Left and right side lights> The left side lamp 50L is attached to the left side mirror 16L of the vehicle 2. The right side lamp 50R is attached to the right side mirror 16R of the vehicle 2. The left side lamp 50L and the right side lamp 50R each have a light emitting unit 51.

[0047] The light-emitting portion 51 of the left side lamp 50L emits light toward the outer surface of the left side door 19. That is, the left side lamp 50L is capable of emitting light toward the left side surface 2L of the vehicle 2. Similarly, the light-emitting portion 51 of the right side lamp 50R emits light toward the outer surface of the right side door 19. That is, the right side lamp 50R is capable of emitting light toward the right side surface 2R of the vehicle 2.

[0048] The left side lamp 50L and the right side lamp 50R are connected to the control unit 70. The left side lamp 50L and the right side lamp 50R are controlled by the control unit 70.

[0049] <Control unit> The control unit 70 is formed by a microcomputer such as a CPU. The control unit 70 is electrically connected to the turn signal 18, the projection device 30, the first detector 41, the second detector 42, the third detector 43, the left side lamp 50L, and the right side lamp 50R via a wire harness (not shown) or the like. The control unit 70 can detect the operation of the turn signal 18. The control unit 70 can also control the projection device 30, the left side lamp 50L, and the right side lamp 50R. The control unit 70 also receives detection signals from the first detector 41, the second detector 42, and the third detector 43.

[0050] In this embodiment, the control unit 70 causes the projection device 30 to project light onto the left display unit 20L when the left signal light 18L is turned on, and causes the projection device 30 to project light onto the right display unit 20R when the right signal light 18R is turned on. Furthermore, the left display unit 20L and the right display unit 20R emit the light projected from the projection device 30 toward the outside A of the vehicle. Therefore, the control unit 70 indirectly controls the emission of light from the left display unit 20L and the right display unit 20R.

[0051] Next, the effects of the notification device 1 of this embodiment will be described with reference to Figs. 5 to 8. Fig. 5 is a schematic diagram showing a state immediately before a vehicle 2 attempting to turn left enters an intersection T. Fig. 6 is a diagram showing the vehicle 2 shown in Fig. 5 as observed from another vehicle 3 approaching the intersection T from the right side of the vehicle 2. Fig. 7 is a schematic diagram showing the state immediately after the vehicle 2 attempting to turn left enters the intersection T. Fig. 8 is a diagram showing the vehicle 2 shown in Fig. 7 as observed from another vehicle 3 approaching the intersection T from the right side of the vehicle 2. The vehicle 2 shown in Figs. 5 to 8 is provided with a notification device 1.

[0052] 5 and 7, the intersection T into which the vehicles 2 and 3 enter is a T-junction. However, the intersection T at which the notification device 1 of the present embodiment is effective is not limited to a T-junction, and may include other intersections such as a crossroads.

[0053] As shown in FIGS. 5 and 7 , when vehicle 2 enters intersection T to turn left, driver D of vehicle 2 turns on left signal light 18L of turn signal 18 to notify nearby observers of the traveling direction of vehicle 2 (more specifically, that vehicle 2 is turning left). However, as shown in FIGS. 6 and 8 , left signal light 18L of turn signal 18 is difficult to see for drivers of other vehicles 3 located to the right of vehicle 2. In other words, turn signal lights 18L, 18R of vehicle 2 attempting to turn left or right at intersection T are difficult to see for drivers of other vehicles 3 approaching vehicle 2 from the opposite direction of the turning direction of vehicle 2. For this reason, the driver of other vehicle 3 is uncertain about the traveling direction of vehicle 2 attempting to enter intersection T, making it difficult for them to safely proceed through the intersection.

[0054] The control unit 70 of this embodiment is connected to the turn signal 18 and causes the left display unit 20L or the right display unit 20R to emit light based on the illumination of the turn signal 18. In the example shown in FIGS. 5 to 8, the vehicle 2 turns left at an intersection T, so the left signal light 18L of the turn signal 18 is illuminated. In this case, the control unit 70 executes a left turn display, causing the left display unit 20L to emit light. More specifically, when the control unit 70 detects that the left signal light 18L of the turn signal 18 is illuminated, the control unit 70 causes the light source unit 32 of the left projection unit 31L of the projection device 30 to emit light and project light including a drawing pattern P (see FIG. 4) toward the left display unit 20L via the scanning unit 33. The light projected from the projection device 30 onto the left display unit 20L is incident on the first reflecting surface 21 (see FIG. 2) of the left display unit 20L. The first reflecting surface 21 reflects the light including the drawing pattern P, causing it to be emitted toward the outside A on the right side of the vehicle 2. As a result, as shown in Figures 6 and 8, the driver of another vehicle 3 approaching vehicle 2 from the right side will perceive that the left front pillar 12L of vehicle 2 is illuminating, and will be able to confirm that vehicle 2 is about to turn left.

[0055] Here, the case where another vehicle 3 approaches the vehicle 2 from the right side when the vehicle 2 makes a left turn at an intersection T has been described. When the vehicle 2 makes a right turn at an intersection T and another vehicle 3 approaches the vehicle 2 from the left side, the same operation is performed, but with the left and right reversed. That is, when the vehicle 2 makes a right turn at an intersection T, the control unit 70 executes a right turn display by emitting light from the right-side display unit 20R. More specifically, when the control unit 70 detects that the right signal light 18R of the turn indicator 18 is illuminated, the control unit 70 causes the light source unit 32 of the right projection unit 31R of the projection device 30 to emit light and project light including the drawing pattern P (see FIG. 4) toward the right-side display unit 20R via the scanning unit 33. The light projected from the projection device 30 onto the right-side display unit 20R is incident on the first reflecting surface 21 (see FIG. 2) of the right-side display unit 20R. The first reflecting surface 21 reflects the light including the drawing pattern P and emits it toward the outside A on the left side of the vehicle 2. As a result, the driver of another vehicle 3 approaching vehicle 2 from the left side of vehicle 2 will recognize that the right front pillar 12R of vehicle 2 is emitting light, and will be able to confirm that vehicle 2 is about to turn right.

[0056] As shown in FIG. 5, the vehicle 2 has not started to turn left just before entering the intersection T. Therefore, just before entering the intersection T, the vehicle 2 faces the right front side 2R of the vehicle 2 toward another vehicle 3 approaching from the right, as shown in FIG. 6. As described above, the left-side display unit 20L of this embodiment emits light toward the front windshield 11 of the vehicle 2 when displaying a left turn. Therefore, just before entering the intersection T, the vehicle 2 can emit light toward an observer positioned on the right front side of the vehicle 2.

[0057] As shown in Fig. 7, after the vehicle 2 enters the intersection T, the vehicle 2 begins to turn left. Therefore, after entering the intersection T, the vehicle 2 faces its right rear side 2R toward another vehicle 3 approaching from the right, as shown in Fig. 8. According to this embodiment, the left-side display unit 20L can emit light toward the side window glass 13 of the vehicle 2 when displaying a left turn. Therefore, after entering the intersection T, the vehicle 2 can emit light toward an observer located on the right rear side of the vehicle 2.

[0058] 7, after entering the intersection T, the vehicle 2 begins to turn left, and therefore an observer (the driver of the other vehicle 3) positioned to the right of the vehicle 2 may be able to recognize that the vehicle 2 is about to turn left by checking the direction of the vehicle 2. Furthermore, if the left-side display unit 20L emits light toward the side window glass 13, some of the light may reach the driver D and cause the driver D to feel dazzled. For this reason, the left-side display unit 20L does not necessarily have to emit light toward the side window glass 13 of the vehicle 2.

[0059] It is preferable that the left display unit 20L and the right display unit 20R do not emit light toward the driver D when executing a left turn display or a right turn display, respectively. If the left display unit 20L and the right display unit 20R emit light toward the driver D, depending on the amount of light, the driver D may feel dazzled and the driver D may be hindered from driving.

[0060] As shown in FIG. 3 , the angle formed by the direction in which the first reflecting surface 21 of the left display unit 20L emits light with respect to the longitudinal direction X is defined as the emission angle α. In this embodiment, the emission angle α is preferably 0° or more and 120° or less. That is, in the notification device 1 of this embodiment, when a left turn indication is executed, the left display unit 20L preferably emits light to the right in a range of 0° or more and 120° or less with respect to the longitudinal direction X of the vehicle 2. Similarly, the right display unit 20R preferably emits light to the left in a range of 0° or more and 120° or less with respect to the longitudinal direction X of the vehicle 2. By setting the emission angle α to 120° or less, it is possible to prevent the left display unit 20L and the right display unit 20R from dazzling the driver D when executing a left turn indication or a right turn indication. By setting the emission angle α to 0° or more, light is not emitted directly in front of the vehicle 2, where the light from the left signal light 18L and the right signal light 18R of the turn indicator 18 can reach sufficiently. This makes it possible to prevent light from being emitted in unnecessary directions, and to irradiate a sufficient amount of light to the necessary observer with minimal energy.

[0061] As described above, the second reflecting surfaces 22 of the left display unit 20L and the right display unit 20R reflect the light projected from the projection device 30 toward the driver D. For this reason, it is preferable that the projection device 30 projects light only onto the first reflecting surfaces 21 of the left display unit 20L and the right display unit 20R, and not onto the second reflecting surfaces 22, when a left turn display or a right turn display is executed.

[0062] For example, when the vehicle 2 is stopped, the control unit 70 can also emit light from the left display unit 20L and the right display unit 20R to the driver D. In this case, the projection device 30 projects light onto the second reflecting surfaces 22 of the left display unit 20L and the right display unit 20R, causing the driver D to recognize the drawing pattern P. Examples of the drawing pattern P that the driver D can recognize include displays of driving time, mileage, remaining battery power, or remaining gasoline.

[0063] <Control method> 9 is a flowchart showing the processing procedure when performing left-side display by the control unit 70. The control unit 70 can control the projection device 30, the left-side illumination light 50L, and the right-side illumination light 50R based on the detection results of the first detection unit 41, the second detection unit 42, and the third detection unit 43. The processing procedure of the control unit 70 will be described below with reference to FIG. 9.

[0064] 9, the processing procedure of the control unit 70 includes a first step S1, a second step S2, a third step S3, a fourth step S4, a fifth step S5, a sixth step S6, a seventh step S7, and an eighth step S8. The control unit 70 causes the right display unit 20R to perform right-side display in a processing procedure similar to the processing procedure shown in FIG.

[0065] In a first step S1, the control unit 70 detects whether the left signal light 18L of the direction indicator 18 is operating. If the control unit 70 detects that the left signal light 18L is operating (first step S1: YES), the control unit 70 proceeds to a second step S2. On the other hand, if the control unit 70 cannot detect that the left signal light 18L is operating (first step S1: NO), the control unit 70 ends the processing procedure.

[0066] In a second step S2, the control unit 70 issues a command to the second detection unit 42 to search the right side of the vehicle 2 and detect an object. In response to the command from the control unit 70, the second detection unit 42 searches for an object (e.g., another vehicle 3) on the right side of the vehicle 2. The second detection unit 42 also transmits information on the object detection results to the control unit 70. If the second detection unit 42 detects an object on the right side of the vehicle 2 (second step S2: YES), the control unit 70 proceeds with the processing procedure to a third step S3. If the second detection unit 42 does not detect an object on the right side of the vehicle 2 (second step S2: NO), the control unit 70 ends the processing procedure.

[0067] In a third step S3, the control unit 70 issues a command to the projection device 30 to project light onto the left display unit 20L. In response to the command from the control unit 70, the projection device 30 projects light from the left projection unit 31L shown in FIG. 1 toward the left display unit 20L. More specifically, the control unit 70 controls the light source unit 32 of the projection unit 31 shown in FIG. 4 to adjust the amount of light projected toward the left display unit 20L. The control unit 70 also controls the scanning unit 33 to form a drawing pattern P to be projected toward the left display unit 20L. When the projection device 30 starts projection in the third step S3, the control unit 70 advances the processing procedure to a fourth step S4.

[0068] By going through the third step S3, light including the drawing pattern P is projected from the projection device 30 onto the first reflecting surface 21 of the left-side display unit 20L. The first reflecting surface 21 reflects this light toward an object (e.g., another vehicle 3) located on the right side of the vehicle 2 (see FIG. 5). As a result, the notification device 1 notifies an observer (e.g., the driver of the other vehicle 3) located on the right side of the vehicle 2 that a left turn will be made.

[0069] In a fourth step S4, the control unit 70 issues a command to the first detection unit 41 to acquire information about the line of sight of the driver D. In response to the command from the control unit 70, the first detection unit 41 acquires information about the line of sight of the driver D and transmits it to the control unit 70 as a detection signal. The control unit 70 determines whether the line of sight of the driver D is directed toward the left-side display unit 20L based on the information acquired by the first detection unit 41. If the control unit 70 determines that the line of sight of the driver D is directed toward the left-side display unit 20L (YES in the fourth step S4), the control unit 70 proceeds to a fifth step S5. If the control unit 70 determines that the line of sight of the driver D is not directed toward the left-side display unit 20L (NO in the fourth step S4), the control unit 70 proceeds to a sixth step S6.

[0070] In fifth step S5, the control unit 70 issues a command to the projection device 30 to reduce the amount of light projected toward the left display unit 20L. The fifth step S5 is a procedure that is executed only when the driver D's line of sight is directed toward the left display unit 20L. Therefore, the control unit 70 reduces the amount of light emitted from the left display unit 20L when the driver D is looking at the left display unit 20L. This allows the control unit 70 to prevent the driver D from feeling dazzled. After the fifth step S5, the control unit 70 proceeds to the fourth step S4.

[0071] In sixth step S6, the control unit 70 issues a command to the third detection unit 43 to detect the brightness of the right side surface 2R of the vehicle 2. In response to the command from the control unit 70, the third detection unit 43 detects the brightness of the right side surface 2R of the vehicle 2 using the right illuminance meter 43R. The third detection unit 43 transmits information on the brightness of the right side surface 2R of the vehicle 2 acquired by the right illuminance meter 43R to the control unit 70 as a detection signal. If the brightness of the right side surface of the vehicle 2 detected by the third detection unit 43 is equal to or less than the threshold value (sixth step S6: YES), the control unit 70 proceeds to seventh step S7. If the brightness of the right side surface of the vehicle 2 detected by the third detection unit 43 exceeds the threshold value (sixth step S6: NO), the control unit 70 proceeds to eighth step S8.

[0072] In seventh step S7, the control unit 70 turns on the right side lamp 50R to illuminate the right side of the vehicle 2. As a result, the brightness of the right side of the vehicle 2 exceeds the threshold value set in sixth step S6. After the right side lamp 50R is turned on in seventh step S7, the control unit 70 proceeds to eighth step S8.

[0073] By going through the sixth step S6 and the seventh step S7, sufficient brightness is ensured on the right side 2R of the vehicle 2. As shown in FIGS. 6 and 8, at night when the surroundings are dark, an observer positioned on the right side of the vehicle 2 may recognize the light emitted from the left display unit 20L but may not recognize that the source of the light is the left front pillar 12L. In this case, the observer does not realize that the vehicle 2 is about to turn left. In order for this observer to recognize the source of the light as the left display unit 20L (i.e., the left front pillar 12L), he or she needs to perceive the depth of the light source relative to the right side 2R of the vehicle 2. For the observer to perceive such depth, the right side 2R of the vehicle 2 needs to be sufficiently bright. When the surroundings are bright, the observer can perceive the depth naturally, but when the surroundings are dark, the brightness of the right side 2R needs to be supplemented. According to this embodiment, when the brightness of the right side 2R of the vehicle 2 is insufficient in the seventh step S7, the right side lamp 50R can supplement the brightness of the right side 2R. This allows the observer to sense the depth of the vehicle 2 and recognize that the light source is the left front pillar 12L, even when the surroundings are dark, making it easier to recognize the direction in which the vehicle 2 is traveling.

[0074] If the observer is the driver D of the other vehicle 3, the headlights of the other vehicle 3 ensure sufficient brightness on the right side 2R of the vehicle 2. For this reason, if the other vehicle 3 approaches from the right side of the vehicle 2, the right side lamp 50R does not illuminate the right side 2R of the vehicle 2. In situations where illumination by the right side lamp 50R is required, the observer is likely to be a pedestrian or the like.

[0075] In eighth step S8, the control unit 70 detects whether the left signal light 18L of the direction indicator 18 is operating, as in the first step S1. If the control unit 70 detects that the left signal light 18L is operating (eighth step S8: YES), the control unit 70 proceeds to the second step S2. On the other hand, if the control unit 70 cannot detect that the left signal light 18L is operating (eighth step S8: NO), the control unit 70 ends the processing procedure.

[0076] In the processing procedure of this embodiment, the control unit 70 does not execute the left-side display when no object is detected on the right side of the vehicle 2 (second step S2: NO). As a result, the notification device 1 does not perform unnecessary left-side display when there is no object to be notified, thereby realizing power saving. Additionally, the control unit 70 may also realize power saving by, for example, reducing the amount of light projected from the projection device 30 toward the left-side display unit 20L when no object is detected on the right side of the vehicle 2. Furthermore, the control unit 70 may detect the distance to the object using the second detection unit 42, and adjust the amount of light projected from the projection device 30 toward the left-side display unit 20L depending on the distance to the object.

[0077] <Summary of the embodiment> The notification device 1 of this embodiment includes a left-side display unit 20L located on the interior side of the left front pillar 12L and emitting light toward the exterior A on the right side of the vehicle 2, a right-side display unit 20R located on the interior side of the right front pillar 12R and emitting light toward the exterior A on the left side of the vehicle 2, and a control unit 70 that can detect the operation of a turn signal 18 and controls the emission of light from the left-side display unit 20L and the right-side display unit 20R. The control unit 70 causes the left-side display unit 20L to emit light when the left signal light 18L of the turn signal 18 is turned on. The control unit 70 also causes the right-side display unit 20R to emit light when the left signal light of the turn signal 18 is turned on.

[0078] According to this configuration, when the vehicle 2 turns left, an observer outside the vehicle A on the right side of the vehicle 2 can recognize the light emitted from the left display unit 20L. Similarly, when the vehicle 2 turns right, an observer outside the vehicle A on the left side of the vehicle 2 can recognize the light emitted from the right display unit 20R. As a result, even if the observer outside the vehicle A has difficulty seeing the left signal light 18L and the right signal light 18R of the direction indicators 18 located at the front end of the vehicle 2, the observer can recognize the traveling direction of the vehicle 2, making it easier to ensure the safe traveling of the vehicle 2.

[0079] In the above-described notification device 1, the left display unit 20L emits light toward the front windshield 11 of the vehicle 2 when a left turn display is executed. In addition, the right display unit 20R emits light toward the front windshield 11 of the vehicle 2 when a right turn display is executed.

[0080] According to this configuration, the vehicle 2 can emit light toward an observer positioned on the right front side of the vehicle 2 immediately before entering the intersection T, making it easier to ensure the vehicle 2 travels safely.

[0081] In the above-described notification device 1, the left display unit 20L emits light to the right in an angle range of 0° to 120° relative to the longitudinal direction X of the vehicle 2 when a left turn display is executed. The right display unit 20R emits light to the left in an angle range of 0° to 120° relative to the longitudinal direction X of the vehicle 2 when a right turn display is executed.

[0082] According to this configuration, the left display unit 20L and the right display unit 20R can be prevented from emitting light toward the driver D. This can prevent the driver D from feeling dazzled while driving. In addition, the left display unit 20L and the right display unit 20R do not emit unnecessary light toward the front of the vehicle 2.

[0083] The above-described notification device 1 further includes a projection device 30 that projects light toward the left display unit 20L and the right display unit 20R. The left display unit 20L and the right display unit 20R each have a first reflection surface 21 that reflects the light projected from the projection device 30 and emits the light toward the outside A of the vehicle.

[0084] According to this configuration, the left display unit 20L and the right display unit 20R reflect light toward the vehicle exterior A. Therefore, the left display unit 20L and the right display unit 20R do not need to have internal light sources, thereby reducing the number of components required for the left display unit 20L and the right display unit 20R. As a result, even if airbags are installed inside the left front pillar 12L and the right front pillar 12R, where the left display unit 20L is installed, components of the left display unit 20L and the right display unit 20R are prevented from flying off when the airbags are deployed, thereby improving safety during airbag deployment. Additionally, according to this embodiment, the left display unit 20L and the right display unit 20R are used as screens that project light emitted from the projection device 30. Therefore, by providing the projection device 30 with the function of projecting laser light, images or videos can be projected from the left display unit 20L and the right display unit 20R without requiring complex mechanisms in the left display unit 20L and the right display unit 20R. This allows the left display unit 20L and the right display unit 20R to convey the traveling direction of the vehicle 2 to an outside observer with a complex visual representation without providing a complex mechanism.

[0085] In the above-described notification device 1, the left display unit 20L and the right display unit 20R each have a second reflecting surface 22 that reflects the light projected from the projection device 30 toward the driver D.

[0086] According to this configuration, the control unit 70 can emit light from the left display unit 20L and the right display unit 20R to the driver D, thereby notifying the driver of information about the vehicle 2, warnings, and the like.

[0087] In the above-described notification device 1, the projection device 30 is disposed between the rearview mirror 15 and the front windshield 11 in the longitudinal direction X of the vehicle 2.

[0088] According to this configuration, the projection device 30 can appropriately project light onto the left display unit 20L and the right display unit 20R while preventing the driver D from being obstructed.

[0089] In the above-described notification device 1, the projection device 30 has a light source unit 32 that emits laser light L, and a scanning unit 33 that forms a drawing pattern P by scanning the laser light L.

[0090] With this configuration, the projection device 30 projects the laser light L onto the left display unit 20L and the right display unit 20R, eliminating the need for focusing. This makes it possible to clearly project the drawing pattern P even if the projection targets, that is, the left display unit 20L and the right display unit 20R, have curved surfaces.

[0091] The above-described notification device 1 further includes a first detection unit 41 that detects the line of sight of the driver D. When the line of sight of the driver D detected by the first detection unit 41 is directed toward one of the left display unit 20L and the right display unit 20R that emits light, the control unit 70 reduces the amount of light emitted from the display unit 20.

[0092] According to this configuration, when the driver D is looking at the display unit 20, the control unit 70 reduces the amount of light emitted from the display unit 20, thereby preventing the driver D from feeling dazzled. Here, "reducing the amount of light" includes the case where the amount of light becomes 0 (the case where light emission is stopped). That is, the control unit 70 may stop light emission from the display unit 20 based on the detection result of the first detection unit 41.

[0093] The above-described notification device 1 further includes a second detection unit 42 that detects an object outside the vehicle A. The control unit 70 executes the left turn indication when the left signal light 18L is on and the second detection unit 42 detects the object on the right side of the vehicle. The control unit 70 also executes the right turn indication when the right signal light 18R is on and the second detection unit 42 detects an object on the left side of the vehicle.

[0094] According to this configuration, the left side display or the right side display is executed only when the second detection unit 42 detects an object outside the vehicle A. Therefore, the notification device 1 does not perform unnecessary left side display when there is no object to be notified, thereby realizing power saving. Furthermore, it is possible to reduce the chances that the driver D will feel dazzled by the light emitted by the left side display or the right side display.

[0095] The above-described notification device 1 further includes a third detection unit that detects the brightness of the left and right sides of the vehicle 2, a left side lamp 50L that can emit light onto the left side 2L, and a right side lamp 50R that can emit light onto the right side 2R. The control unit 70 causes the right side lamp 50R to emit light when the brightness of the right side 2R detected by the third detection unit 43 is equal to or less than a threshold when a left turn display is being executed. The control unit 70 causes the left side lamp 50L to emit light when the brightness of the left side 2L detected by the third detection unit 43 is equal to or less than a threshold when a right turn display is being executed.

[0096] According to this configuration, the right side lamp 50R or the left side lamp 50L compensates for the lack of brightness on the right side 2R or the left side 2L of the vehicle 2. This allows an observer to sense the depth of the vehicle 2 and easily recognize that the source of the light is the left front pillar 12L or the right front pillar 12, even when the surroundings are dark, making it easier for an observer outside the vehicle A to recognize in which direction the vehicle 2 is traveling.

[0097] <Modification> Fig. 10 is a cross-sectional view of the left display unit 120L of the notification device 101 of the modified example. Fig. 11 is a cross-sectional view of the right display unit 120R of the notification device 101 of the modified example. Unlike the above-described embodiment, the notification device 101 of this modified example does not have the projection device 30. In the notification device 101 of this modified example, the display unit 120 itself emits light.

[0098] 10, in this modification, a left front pillar 112L of a vehicle 2 has an opening 112a that opens toward the right side. The opening 112a extends along the length of the left front pillar 112L.

[0099] The left-side display unit 120L has a light source unit 123 disposed inside the left front pillar 112L and a translucent cover 124 that covers the opening 112a of the left front pillar 112L. The light source unit 123 irradiates light from inside the left front pillar 112L toward the opening 112a. The translucent cover 124 transmits light. Therefore, the light irradiated from the light source unit 123 inside the left front pillar 112L is emitted from the surface of the translucent cover 124, passes through the front windshield 11, and is irradiated toward the outside A on the right side of the vehicle 2.

[0100] 11, in this modification, a right front pillar 112R of a vehicle 2 has an opening 112b that opens toward the left side. The opening 112b extends along the length of the right front pillar 112R.

[0101] The right-side display unit 120R has a light source unit 123 disposed inside the right front pillar 112R and a translucent cover 124 that covers the opening 112b of the right front pillar 112R. The light source unit 123 emits light from inside the right front pillar 112R to the opening 112b. The translucent cover 124 transmits light. Therefore, the light emitted from the light source unit 123 inside the right front pillar 112R is emitted from the surface of the translucent cover 124, passes through the front windshield 11, and is emitted toward the outside A on the left side of the vehicle 2.

[0102] In the notification device 101 of this modification, the left display unit 120L has a light source unit 123 arranged inside the left front pillar 112L, and the right display unit 120R has a light source unit 123 arranged inside the right front pillar 112R. According to the notification device 101 of this modification, since the left display unit 120L and the right display unit 120R each have a light source unit 123, there is no need to provide a separate projection device 30. Therefore, the configuration of the notification device 101 can be simplified and manufactured at low cost.

[0103] While the embodiments and modifications of the present invention have been described above, the configurations and combinations thereof in the embodiments and modifications are merely examples, and additions, omissions, substitutions, and other modifications of the configurations are possible without departing from the spirit of the present invention. Furthermore, the present invention is not limited to the embodiments.

[0104] For example, the arrangement of the first detection unit, second detection unit, third detection unit, projection device, left side lighting, and right side lighting in the above-described embodiment is one example, and the arrangement is not limited as long as it can perform each function. [Explanation of symbols]

[0105] 1,101...alarm device, 2...vehicle, 2L...left side, 2R...right side, 11...front window glass, 12R, 112R...right front pillar, 12L, 112L...left front pillar, 15...rearview mirror, 18...direction indicator, 18L...left signal light, 18R...right signal light, 20, 120...display unit, 20L, 120L...left display unit, 20R, 120R...right display unit, 21...first reflective surface, 22...second reflective surface, 30...projection device, 32, 123...light source unit, 33...scanning unit, 33a...mirror, 70...control unit, 41...first detection unit, 42...second detection unit, 43...third detection unit, 50L...left side lamp, 50R...right side lamp, A...outside of vehicle, B...inside of vehicle, D...driver, L...laser light, P...drawing pattern, X...front / rear direction

Claims

1. An alarm device provided in a vehicle cabin, a left display unit that is located on a side surface of the left front pillar inside the vehicle interior and emits light toward the outside of the vehicle on the right side of the vehicle; a right-side display unit that is located on a side surface of the right front pillar inside the vehicle interior and emits light toward the left side of the vehicle exterior; a control unit that controls the emission of light from the left display unit and the right display unit, The control unit When the left signal lamp of the turn signal is turned on, a left turn indication is executed by emitting light on the left display unit, When the right signal lamp of the turn indicator is turned on, a right turn indication is executed by emitting light on the right display unit. Alarm device.

2. the left side display unit emits light toward a front windshield of the vehicle when the left turn display is executed, The right-side display unit emits light toward a front windshield of the vehicle when the right-turn display is executed. The notification device according to claim 1 .

3. the left side display unit emits light in a range of 0° to 120° to the right with respect to a front-to-rear direction of the vehicle when the left turn display is executed, When the right turn display is executed, the right side display unit emits light to the left in a range of 0° to 120° with respect to a front-to-rear direction of the vehicle. The notification device according to claim 1 .

4. further comprising a projection device that projects light toward the left display unit and the right display unit; The left display unit and the right display unit each have a first reflecting surface that reflects light projected from the projection device and emits the light toward the outside of the vehicle. The notification device according to claim 1 .

5. The left display unit and the right display unit each have a second reflecting surface that reflects the light projected from the projection device toward the driver. The notification device according to claim 4.

6. The projection device is disposed between a rearview mirror and a front windshield in the longitudinal direction of the vehicle. The notification device according to claim 4 or 5.

7. The projection device is a light source unit that emits laser light; a scanning unit that forms a drawing pattern by scanning the laser light; The notification device according to claim 4 or 5, further comprising:

8. the left side display unit has a light source unit disposed inside the left front pillar, The right-side display unit has a light source unit disposed inside the right front pillar. The notification device according to claim 1 .

9. The vehicle further includes a first detection unit that detects the driver's line of sight, The control unit reduces the amount of light emitted from the display unit when the line of sight of the driver D detected by the first detection unit is directed toward one of the left display unit and the right display unit that emits light. The notification device according to claim 1 .

10. Further provided is a second detection unit that detects an object outside the vehicle, The control unit When the left signal light is turned on and the second detection unit detects the object on the right side of the vehicle, the left turn indication is executed, When the right signal light is on and the second detection unit detects the object on the left side of the vehicle, the right turn indication is executed. The notification device according to claim 1 .

11. a third detection unit that detects the brightness of a left side surface and a right side surface of the vehicle; a left side lamp capable of irradiating light onto the left side surface; a right side illumination lamp capable of irradiating light onto the right side surface, The control unit when the brightness of the right side detected by the third detection unit is equal to or less than a threshold value when the left turn indication is executed, the right side illumination lamp is turned on; When the brightness of the left side detected by the third detection unit is equal to or less than a threshold value when the right turn indication is executed, the left side lamp is turned on. The notification device according to claim 1 .

Images