Light fixture system

Abstract

The present invention comprises: a lamp; a display (28) that is provided to a vehicle so as to be visible from outside the vehicle; and a control unit (42) that controls the lamp and the display (28). With the beginning of a prescribed event, the control unit (42) lights the lamp in order to catch the attention of another road-user, and following the lighting of the lamp, the control unit causes the display to display information targeted to the other road-user.

Description

Lighting System

[0001] The present invention relates to a lighting system.

[0002] Currently, research into autonomous driving technology for automobiles is being actively conducted in various countries, and each country is considering establishing laws that would allow vehicles to drive on public roads in autonomous driving mode. Autonomous driving is defined as levels 0 to 5, with levels 3 and above generally considered to be autonomous driving. Level 3 is called conditional autonomous driving, in which the system operates everything in specific locations, with the driver taking over in emergencies. Level 4 is called highly autonomous driving, in which the system recognizes traffic conditions only in specific locations, such as highways, and performs all driving-related operations. Level 5 is called fully autonomous driving, in which the system recognizes traffic conditions without location restrictions and performs all driving-related operations.

[0003] International Publication No. 2020 / 137455

[0004] The present invention has been made in light of this situation, and one exemplary purpose of an embodiment thereof is to provide a lighting system that allows communication with other traffic participants around the vehicle.

[0005] In order to solve the above problems, one aspect of the present invention provides a lighting system including a lamp, a display mounted on a vehicle so as to be visible from outside the vehicle, and a controller that controls the lamp and the display. The controller turns on the lamp to attract the attention of other traffic participants when a predetermined event starts, and displays information for the traffic participants on the display after the lamp is turned on.

[0006] Another aspect of the present invention is also a lighting system. The lighting system includes a lamp, a road marking lamp, and a control unit that controls the lamp and the road marking lamp. The control unit turns on the lamp to attract the attention of other traffic participants when a predetermined event starts, and controls the road marking lamp after the lamp is turned on to draw information for other traffic participants on the road surface.

[0007] Any combination of the above components, or mutual substitution of the components or expressions of the present invention between methods, devices, systems, etc., are also valid aspects of the present invention.

[0008] According to the present invention, a lighting system that allows communication with people around the vehicle can be provided.

[0009] 1 is a side view of a vehicle equipped with a lighting system according to an embodiment. 2 is a front view of the vehicle of FIG. 1. 3 is a schematic front view showing a part of the lighting system of FIG. 1. 4 is a cross-sectional view taken along line A-A of FIG. 3. 5 is a cross-sectional view taken along line B-B of FIG. 3. 6 is a functional block diagram of the lighting system of FIG. 1. 7 (a) to (g) are diagrams explaining the operation of the lighting system in relation to a proximity event in chronological order. 8 (a) to (e) are diagrams explaining the operation of the lighting system in relation to a proximity event in chronological order. 9 (a) to (d) are diagrams explaining the operation of the lighting system in an entry event in chronological order.

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements are given the same reference numerals, and redundant description will be omitted as appropriate.

[0011] In the following, we will use the example of an autonomous vehicle as the vehicle's driving mechanism, but even if the vehicle is a manually driven vehicle, it is always better to have smoother communication between the vehicle and, ultimately, the driver and other traffic participants. Therefore, the technical concepts of the embodiments can also be applied to manually driven vehicles, as long as there is no contradiction.

[0012] Fig. 1 is a side view of a vehicle 100 equipped with lighting systems 10 and 11 according to an embodiment. Fig. 2 is a front view of the vehicle 100.

[0013] Vehicle 100 is a vehicle compatible with Level 5 fully automated driving and does not have a driver's seat. There are no particular limitations on the shape of vehicle 100, but here it is bilaterally symmetrical when viewed in both the width direction and the length direction (the horizontal direction perpendicular to the width direction, hereinafter also referred to as the "vehicle length direction"). Vehicle 100 is capable of moving in both directions along its length. For convenience, one side along its length (the left side in FIG. 1 ) is referred to as the front side, and the other side along its length (the right side in FIG. 1 ) is referred to as the rear side. Vehicle 100 is equipped with a boarding / alighting area 102 where occupants get on and off, tires 104, etc.

[0014] The components of the lighting system 10 are mainly arranged on the front side of the vehicle 100, and the components of the lighting system 11 are mainly arranged on the rear side of the vehicle 100. The lighting systems 10 and 11 may share a control unit. Since the functions and configurations of the lighting systems 10 and 11 are substantially the same, the following description will be given of the lighting system 10 as a representative.

[0015] Fig. 3 is a schematic front view showing a portion of the lighting system 10. Fig. 4 is a cross-sectional view taken along line A-A in Fig. 3. Fig. 5 is a cross-sectional view taken along line B-B in Fig. 3. Please refer to Figs. 1 and 3 to 5. The lighting system 10 includes a plurality of lamps 20, 22, 24, 26, a display 28, a plurality of sound producing devices 30, a plurality of drawing lamps 32, and a plurality of sensors 44. The number of sound producing devices 30, drawing lamps 32, and sensors 44 is not particularly limited, and may be one of each, for example.

[0016] The multiple lamps 20, 22, 24, 26, the display 28, and the multiple sound generating devices 30 are housed in a lamp chamber 16. The lamp chamber 16 is formed by a lamp body 12 and a transparent outer cover 14 attached to the lamp body 12 so as to cover the opening of the lamp body 12. The drawing lamp 32 is provided outside the lamp chamber 16, in other words, on the vehicle body side. Note that the drawing lamp 32 may also be housed in the lamp chamber 16, or several components may be provided outside the lamp chamber 16 in addition to or instead of the drawing lamp 32.

[0017] In this embodiment, although not particularly limited, the lamps 20, 24, and 26 are arranged in a substantially rectangular shape when viewed from the front.

[0018] At least one (three in the illustrated example) variable light color lamp 20 and at least one (three in the illustrated example) automatic driving marker lamp 22 are arranged alternately in the vertical direction on each of the left and right sides of a rectangle extending approximately vertically.

[0019] The variable-color-illumination lamp 20 is configured to be capable of emitting either white light to be emitted in the direction of vehicle travel or red light to be emitted in the direction opposite to the direction of vehicle travel. The white light to be emitted in the direction of vehicle travel is light of a color and intensity that meets the legal requirements for a normal headlamp. The red light to be emitted in the direction opposite to the direction of vehicle travel is light of a color and intensity that meets the legal requirements for a normal rear lamp. Such variable-color-illumination lamp 20 can emit either white light or red light forward depending on the direction of vehicle travel, making it suitable for fully autonomous vehicles that switch their direction of travel depending on the surrounding conditions.

[0020] The autonomous driving marker lamp 22 is a lamp for informing the surrounding area that the vehicle 100 is autonomously driving, and constantly emits a turquoise light while the vehicle 100 is autonomously driving.

[0021] Communication lamps 24, 26 are arranged at the top and bottom of a rectangle extending substantially horizontally. The communication lamps 24, 26 are lamps for communicating with other traffic participants around the vehicle, and have variable light emission patterns.

[0022] Each of the communication lamps 24, 26 includes a substrate 33, a plurality of LEDs 34 arranged on the substrate 33, and a turquoise inner lens 36 provided in front of the lamp to cover the plurality of LEDs 34. In Fig. 3, the plurality of LEDs 34 are clearly visible through the inner lens 36, but in reality, the plurality of LEDs 34 are only faintly visible or not visible at all because the inner lens 36 is turquoise.

[0023] When viewed from the front, the substrate 33 and inner lens 36 extend straight in the vehicle width direction except for both ends in the vehicle width direction and are relatively narrow in width, and both ends in the vehicle width direction bend upward and downward toward the other communication lamp in a gentle curve, with the width increasing toward the ends.

[0024] The LEDs 34 are full-color LEDs whose illumination color can be changed. Experiments conducted by the inventors have shown that, although the turquoise color of the inner lens 36 affects the LEDs 34 to a certain degree when the LEDs 34 are illuminated in a dark color, the LEDs 34 are generally visible through the inner lens 36 in the illuminated color. That is, when the LEDs 34 are illuminated in blue, red, green, yellow, amber, or turquoise, they appear blue, red, green, yellow, amber, or turquoise, respectively, through the inner lens 36. In this case, a portion that appears turquoise, the color of the inner lens 36, when the LEDs 34 are not illuminated appears to glow in a color other than turquoise when the LEDs 34 are illuminated, thereby providing a sense of surprise in the illumination. The LEDs 34 are not limited to full-color LEDs and may be LEDs that emit a predetermined color. For example, the LEDs 34 may be white-emitting LEDs. In this case, the LED 34 appears turquoise-white or turquoise when viewed through the inner lens 36. The color of the inner lens 36 is not limited to turquoise, and it may be transparent or another color.

[0025] The display 28 is preferably provided near the communication lamps 24, 26, and more preferably adjacent to the communication lamps 24, 26. In this example, the display 28 is disposed inside the plurality of lamps 20, 24, 26 arranged in a substantially rectangular shape, and is adjacent to the plurality of lamps 20, 24, 26.

[0026] The display 28 displays, for example, status information of the vehicle 100. The display 28 also displays more detailed information that cannot be conveyed by the communication lamps 24, 26, in order to facilitate further communication with other traffic participants. The display 28 preferably has a resolution of 1,500 to 2,000 cd / m ２ In this case, the information displayed on the display 28 can be seen even outdoors on a sunny day when the light irradiating the display 28 is strong.

[0027] As shown in FIG. 5 , the display 28 is an LED display and includes a substrate 38, a plurality of LEDs 40 arranged in a matrix on the substrate 38, and a transparent inner lens 41 provided in front of the lamp to cover the LEDs 40. The LEDs 40 are arranged at intervals of, for example, 5 mm. The LEDs 40 are full-color LEDs whose illumination color can be changed. In other words, the display 28 is a full-color display. Note that the LEDs 40 may also be monochromatic LEDs whose illumination color cannot be changed. In other words, the display may also be a monochromatic display. In this example, the display 28 is a curved display in which a plurality of LEDs 40 are arranged on a curved substrate 38. However, it may also be a flat display in which a plurality of LEDs 40 are arranged on a flat substrate. The spacing between the LEDs 40 may be determined based on knowledge, experimentation, or the like, as long as it achieves the resolution required for transmitting information. A reflection suppression treatment, such as an anti-reflection coating, may be applied to the surface of the inner lens 41. Note that the display 28 is not limited to an LED display and may be, for example, an organic electroluminescence (EL) display or a liquid crystal display.

[0028] The multiple sound-generating devices 30 are speakers that generate sound by vibrating a diaphragm and thus the outer cover 14 using a voice coil and a magnet. For example, the outer cover 14 may be formed by integrating a transparent member and an opaque member, or by two-color molding, and the sound-generating devices 30 may be provided on the back side of the opaque member. The sound-generating devices 30 may also be configured to generate sound by vibrating components of the lighting system other than the outer cover 14 or a part of the vehicle body. Alternatively, the sound-generating devices 30 may have other sound-generating structures. The multiple sound-generating devices 30 are provided, for example, at equal intervals, preferably as far apart as possible, in the vehicle width direction when viewed from the front. The multiple sound-generating devices 30 are configured to be individually controllable. For example, by simultaneously emitting sound from multiple sound-generating devices 30 that are relatively far apart, a three-dimensional sound can be generated.

[0029] The drawing lamp 32 draws a pattern on the road surface. The drawing lamp 32 is preferably capable of switching patterns. The drawing lamp 32 may include, for example, a light source such as a full-color LED that can change the color of its illumination, and a rotary translucent plate that forms a pattern based on the light from the light source and that can switch between a plurality of patterns.

[0030] A plurality of sensors 44 are disposed below the variable-color-illumination lamp 20 and the autonomous driving marker lamp 22. The sensors 44 are provided, for example, to detect other traffic participants. In this case, the sensors 44 may be designed and selected according to the other traffic participants to be detected. For example, to detect other traffic participants whose facial data approaching the vehicle 100 is registered in advance, or to detect traffic participants at an intersection, a camera may be selected as the sensor 44. Furthermore, to detect other traffic participants who have a key to the vehicle 100 or a registered smartphone in advance, a device capable of communicating with the key or smartphone or receiving a wireless signal emitted by the key or smartphone may be selected as the sensor 44.

[0031] Fig. 6 is a functional block diagram of the lighting system 10. As shown in Fig. 6, the lighting system 10 further includes a control unit 42. The control unit 42 may be housed within the lamp chamber 16 or may be provided outside the lamp chamber 16.

[0032] The control unit 42 can be configured with a digital processor, and may be configured, for example, with a combination of a microcomputer including a CPU and a software program, or may be configured with an FPGA (Field Programmable Gate Array) or an ASIC (Application Specific IC).

[0033] The control unit 42 controls the communication lamps 24, 26, and when a predetermined event starts, lights up the communication lamps 24, 26 in a lighting mode corresponding to the event, thereby enabling communication with other traffic participants and attracting their attention.

[0034] As an example of the lighting mode, the control unit 42 may light up a part of the communication lamps 24, 26 and move the lighting range. A method for achieving this will be described with reference to FIG. 1. The control unit 42 may move the lighting range by sequentially turning on and off a plurality of LEDs 34. For example, when three LEDs 34 are to be turned on simultaneously, the lighting range can be moved by switching the LEDs 34 to be turned on as follows: LEDs 34 ｉ , 34 ｉ＋１ , 34 ｉ＋２ LED34 ｉ＋１ , 34 ｉ＋２ , 34 ｉ＋３ LED34 ｉ＋２ , 34 ｉ＋３ , 34 ｉ＋４ : :

[0035] 6, after the communication lamps 24 and 26 are turned on, i.e., after attracting the attention of other traffic participants, the control unit 42 controls the display 28 to display information corresponding to the event on the display 28 and / or controls the drawing lamp 32 to draw information corresponding to the event on the road surface, thereby enabling further communication with other traffic participants.

[0036] The control unit 42 controls the sound generating device 30 to generate a sound corresponding to an event at a timing related to the display of information corresponding to the event on the display 28 or the drawing of information by the drawing lamp 32. As a result, the information by the display 28 and the drawing lamp 32, i.e., visual information, is emphasized or supplemented by the information by the sound generating device 30, i.e., auditory information. This means that communication with other traffic participants can be more reliably achieved.

[0037] The specified event is not limited to, but may be, for example, the proximity of another traffic participant to vehicle 100 while vehicle 100 is parked (hereinafter referred to as a proximity event), or the detection of another traffic participant when entering an intersection (hereinafter referred to as an entry event).

[0038] The control unit 42 may determine the start and end of a proximity event based on, for example, the distance to other traffic participants identified from an image captured by the sensor 44 as a camera (hereinafter referred to as the camera image IMG), or may also determine the start and end of a proximity event based on, for example, the distance to a key to the vehicle 100 or a pre-registered smartphone carried by the other traffic participants.

[0039] The control unit 42 may determine the start and end of the entry event based on, for example, the camera image IMG.

[0040] The above is the basic configuration of the lighting system 10. Next, the operation thereof will be described.

[0041] 7A to 7H are diagrams illustrating the operation of the lighting system 10 in chronological order regarding a proximity event, i.e., when a person P, another traffic participant, approaches a parked vehicle 100. In this example, the person P is a person who should be allowed to ride in the vehicle 100, such as the person who made the reservation if the vehicle 100 is a shared car, or the owner of the vehicle 100, for example.

[0042] In FIG. 7A, the distance between the person P and the vehicle 100 is greater than the first distance (for example, 10 m).

[0043] In FIG. 7B , the distance between person P and vehicle 100 has decreased to or below a first distance, and a proximity event has been determined to have occurred, so the communication lamps 24, 26 are illuminated in a first illumination mode. The first illumination mode is an illumination mode that creates the appearance that the vehicle 100 is searching for person P. In the first illumination mode, a single illuminated area R that glows in a first color (e.g., blue) moves, for example, clockwise as shown, counterclockwise, or back and forth from side to side. In the first illumination mode, the communication lamps 24, 26 are likened to eyes, and they are depicted as moving around restlessly as if searching for person P.

[0044] In FIG. 7( c ), the distance between the person P and the vehicle 100 has decreased to a second distance (e.g., 3 m) or less that is shorter than the first distance, so the lighting mode of the communication lamps 24, 26 is changed from the first lighting mode to the second lighting mode. The second lighting mode is a lighting mode that creates the impression that the vehicle 100 has discovered the specific person P. When the lighting mode changes from the first lighting mode to the second lighting mode, the movement of the illuminated area R of the communication lamps 24, 26 stops, and the color of the illuminated area R changes to a second color (e.g., green) that is different from the first color. The second lighting mode creates the impression that the vehicle 100 has made eye contact with the person P it was searching for. The sound device 30 (not shown in FIG. 7( c )) may emit a sound S1 indicating that the vehicle 100 has discovered the specific person P at a timing related to the illumination of the communication lamps in the second lighting mode, for example, at the same time as the illumination of the communication lamps in the second lighting mode begins.

[0045] 7(d), welcoming information (here, "HELLO!") is displayed on display 28. Sound generating device 30 (not shown in FIG. 7(d)) ​​may emit welcoming sound S2 at a timing related to the display of the welcoming information on display 28, for example, at the same time as the display starts. Sound S2 may be a voice reading out the information (here, "HELLO") displayed on display 28.

[0046] In Fig. 7(e), the communication lamps 24, 26 are lit in a third lighting mode. The third lighting mode is a lighting mode that creates the appearance that the vehicle 100 is welcoming the person P. In the third lighting mode, the communication lamps 24, 26, for example, as a whole, are lit in the second color or a third color different from the first and second colors, with 1 / f fluctuation characteristics in the intensity of the light. This can give a sense of relaxation to the person P.

[0047] 7(f), the display 28 displays the position of the seat where the person P should sit. The sound generating device 30 (not shown in FIG. 7(f)) may emit a voice S3 that reads out the information displayed on the display 28 (here, "Here is your seat") at a timing related to the display, for example, at the same time as the start of the display.

[0048] In FIG. 7G, a pattern PTN1 that guides passengers to the boarding / alighting section 102, for example, the boarding / alighting section 102 corresponding to the boarding position, is drawn on the road surface.

[0049] 8A to 8F are diagrams illustrating the operation of the lighting system 10 in chronological order in relation to a proximity event, i.e., when a person P, another traffic participant, approaches the parked vehicle 100. In this example, the person P is a person who should not be allowed to ride in the vehicle 100, for example, a person who has not made a reservation if the vehicle 100 is a shared car, or a person who is not the owner of the vehicle 100, for example.

[0050] 8A, person P has not entered the security area of ​​parked vehicle 100. The security area of ​​vehicle 100 is an area at a predetermined distance from vehicle 100, and may be, for example, a circular area with a radius of 5 m centered on vehicle 100.

[0051] In FIG. 8( b), person P enters the security area, in other words, the distance between person P and vehicle 100 becomes equal to or less than a third distance (e.g., 5 m), and a proximity event is determined to have occurred. Therefore, the communication lamp 24 is illuminated in a fourth illumination mode. The fourth illumination mode is an illumination mode that creates the impression that person P is being watched. In the fourth illumination mode, a single illuminated area R that glows in a fourth color (e.g., blue) moves in the vehicle width direction in accordance with the movement of person P. The fourth illumination mode expresses the appearance of following person P with the eyes to give person P the impression that he or she is being watched. This makes it possible to deter person P from approaching the vehicle 100.

[0052] In FIG. 8( c), the distance between person P and vehicle 100 has decreased to a fourth distance (e.g., 1 m) or less, which is shorter than the third distance, so the communication lamps 24, 26 are illuminated in a fifth illumination mode. The fifth illumination mode is an illumination mode that creates an appearance of greater vigilance for person P. In the fifth illumination mode, for example, the entire communication lamps 24, 26 are illuminated in the fourth color or a fifth color different from the fourth color. The fifth illumination mode expresses the wide-open eyes of the communication lamps 24, 26, which are shaped like eyes. It is expected that changing from the fourth illumination mode to the fifth illumination mode will startle and agitate person P, thereby preventing further approach, contact, and even actual harm.

[0053] In FIG. 8( d ), information expressing a warning is displayed on the display 28. In this example, a character string and an illustration indicating that security is activated are displayed. Note that, since this display is merely intended to express a warning, it is not necessary for security to actually be activated, nor is it necessary for such a function to be installed in the vehicle 100. The sound generating device 30 (not shown in FIG. 8( d )) may emit a warning sound S4 at a timing related to the display on the display 28, for example, simultaneously with the start of the display. The warning sound S4 may be a voice reading out the information displayed on the display 28 (here, "SECURITY ON").

[0054] 8(e), since it is detected that the vehicle 100 has been harmed, such as a broken window, the communication lamps 24 and 26 are illuminated in the sixth lighting mode, warning information is displayed on the display 28, and the sound device 30 emits a warning sound S5. This is expected to further surprise and upset the person P, preventing further harm from being inflicted. It also makes it possible to alert surrounding traffic participants that harm is being inflicted.

[0055] In the sixth lighting mode, the entire communication lamps 24, 26 are flashed in a sixth color (e.g., amber) different from the fourth and fifth colors. The warning information is a character string and an illustration indicating the warning. The warning sound S5 is preferably emitted alternately by two sound-emitting devices 30 that are relatively far apart. It is expected that the moving sound emission position will surprise and upset the person P, thereby preventing further harm.

[0056] 9A to 9D are diagrams illustrating the operation of the lighting system 10 in a time series during an entry event. In this example, the intersection is a T-junction, but it may also be a crossroads.

[0057] In FIG. 9A, the vehicle 100 is approaching an intersection. The vehicle 100 is about to turn left, and the communication lamps 24, 26 are illuminated in a seventh illumination mode, which indicates an intention to turn left. In the seventh illumination mode, for example, the left ends of the communication lamps 24, 26 are flashed. In other words, the communication lamps 24, 26 function as turn signal lamps. The drawing lamp 32 also depicts a pattern PTN2, which indicates an intention to turn left. The pattern PTN2 is, but is not limited to, a dashed line extending diagonally forward and to the left.

[0058] 9B, a person P is detected in front of the vehicle 100. The vehicle 100 stops upon detecting the person P. The person P also stops upon noticing the vehicle 100.

[0059] 9(c), in order to indicate that person P has been detected (i.e., that person P has been noticed), the communication lamps 24, 26 are lit in an eighth lighting mode that is different from the seventh lighting mode. In the eighth lighting mode, for example, the entire communication lamps 24, 26 are lit in blue. By letting person P know that they have been noticed, a sense of security can be given to person P.

[0060] In FIG. 9( d ), the lighting system 10 performs an effect of giving way to person P. For example, the communication lamps 24 and 26 are lit in a ninth lighting mode that is different from the eighth lighting mode. The ninth lighting mode, for example, lights up the entire communication lamps 24 and 26 in the same blue color as the eighth lighting mode, with 1 / f fluctuation characteristics in the intensity of light. Furthermore, information indicating the intention to give way (here, "Go ahead") is displayed on the display 28. The drawing lamp 32 draws a pattern PTN3 indicating the intention to give way. Here, the pattern PTN3 is an arrow that guides person P. The sound device 30 produces a sound, such as a voice, indicating the intention to give way.

[0061] According to the present embodiment described above, communication with other traffic participants is achieved by lighting up the communication lamps 24, 26, thereby attracting the attention of the other traffic participants, and then information for the other traffic participants is displayed on the display 28 or drawn on the road surface by the drawing lamps 32, thereby further communicating with the other traffic participants. Therefore, according to the present embodiment, communication with other traffic participants can be achieved more reliably.

[0062] The present invention has been described using specific terms based on the embodiments, but the embodiments merely illustrate one aspect of the principles and applications of the present invention, and many modifications and changes in arrangement are permitted to the embodiments as long as they do not deviate from the concept of the present invention as defined in the claims.

[0063] The present invention can be used in a lighting system.

[0064] 10 lighting system, 24, 26 communication lamp, 28 display, 30 sound generating device, 32 drawing lamp, 42 control unit.

Claims

1. Lamp and a display provided in the vehicle so as to be visible from outside the vehicle; a control unit that controls the lamp and the display; Equipped with The control unit turns on the lamp to attract the attention of other traffic participants when a predetermined event starts, and displays information for the other traffic participants on a display after the lamp is turned on.

2. The lighting system according to claim 1 , wherein the lamp and the display are disposed adjacent to each other.

3. Lamp and Road surface drawing lamps, a control unit for controlling the lamps and the road marking lamps; Equipped with The control unit turns on the lamp to attract the attention of other traffic participants when a predetermined event starts, and after the lamp turns on, controls the road surface drawing lamp to draw information for the other traffic participants on the road surface.

4. 4. The lighting system according to claim 1, wherein the event is the approach of the other traffic participant to a vehicle equipped with the lighting system while the vehicle is parked.

5. The lighting system according to claim 4 , wherein the control unit changes the lighting state of the lamp depending on the distance between the vehicle and the other traffic participant.

6. The other traffic participants are people who should be allowed to board the vehicle; The lighting system according to claim 4 , wherein the information is information expressing a welcome to the other traffic participants.

7. the other traffic participants are persons who should not be allowed to board the vehicle; The lighting system according to claim 4 , wherein the information is information indicating a warning to the other traffic participants.

8. 4. The lighting system according to claim 1, wherein the event is the detection of the other traffic participant when entering an intersection.

9. The lighting system according to claim 1 , further comprising a sound generating device that generates a sound corresponding to the event.