JP2017159904A - Vehicular signal lighting fixture and road surface irradiation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular signal lighting fixture and a road surface irradiation system allowing a person using a road in front of a vehicle to determine whether or not a driver of the approaching vehicle is operating a brake.SOLUTION: Control means controls a light source: so that a predetermined irradiation pattern is formed when a brake operation of a driver is detected by brake operation detection means without other vehicles detected in a predetermined area in front of an own vehicle by a vehicle detection system, and a pedestrian is detected in front of the own vehicle by a pedestrian detection system; and so that the light source is turned off when the brake operation of the driver is detected to be in an off state by the brake operation detection means.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle signal lamp and a road surface illumination system, and more particularly to a vehicle signal lamp configured to form a specific illumination pattern on the road surface in front of the vehicle in conjunction with a driver's brake operation, and The present invention relates to a road surface irradiation system.

  2. Description of the Related Art Conventionally, in the field of vehicle signal lamps, stop lamps (braking lights) for informing other road users behind the vehicle that the driver is operating a brake are known.

  In addition, a road surface projection device configured to project an image on a road surface in front of a pedestrian in front of the vehicle has been proposed from the viewpoint of informing the pedestrian in front of the vehicle of the approach of the vehicle (for example, Patent Document 1).

Japanese Patent No. 4720650

  However, the former stop lamp (braking light) is for informing other road users behind the vehicle that the driver is operating the brake, and is disposed at the rear of the vehicle. Whether road users (pedestrians and oncoming vehicles trying to cross the road at intersections, etc.) are braking by the approaching vehicle driver (ie, will they decelerate and stop) There is a problem that it cannot be determined.

  On the other hand, the latter road surface projection device, when it is determined that the pedestrian in front of the vehicle is present in a predetermined determination area, regardless of whether the driver is braking or not, the pedestrian in front of the vehicle Because it is configured to project an image on the road surface in front of the vehicle, road users in front of the vehicle (pedestrians and oncoming vehicles that are trying to cross the road at intersections, etc.) are driving nearby vehicles. There is a problem that it is impossible to determine whether the person is operating the brake (that is, whether or not he / she intends to decelerate and stop).

  The present invention has been made in view of such circumstances, and a vehicle driver approaching a road user in front of the vehicle (such as a pedestrian or an oncoming vehicle trying to cross the road at an intersection). It is an object of the present invention to provide a vehicle signal lamp and a road surface illumination system that can determine whether or not the vehicle is operating a brake (that is, whether or not it intends to decelerate and stop).

  In order to achieve the above object, the present invention is a vehicle signal lamp that is mounted on a vehicle front portion together with a vehicle headlamp and forms a specific irradiation pattern in an area within 5 m from the vehicle front portion. The signal lamp for the vehicle detects a brake operation detecting means for detecting a driver's brake operation, a specific irradiation pattern forming means for forming a specific irradiation pattern on the road surface in front of the vehicle, and detects other vehicles existing in front of the vehicle. Vehicle detection system and a pedestrian detection system for detecting a pedestrian existing in front of the vehicle, the specific irradiation pattern forming means forms a specific irradiation pattern on the road surface in front of the vehicle with the light source An optical system for controlling the light from the light source, and a control means for controlling the lighting state of the light source. The control means includes a brake operation detecting means for controlling the driver's brake operation. When a vehicle detection system detects no pedestrians in front of the host vehicle without detecting other vehicles within a predetermined range in front of the host vehicle and the pedestrian detection system detects a specific irradiation pattern. Provided is a vehicular signal lamp that controls a light source so that the light source is turned off when the brake operation detection means detects that the driver's brake operation is off. To do.

  In one aspect of the present invention, the vehicle signal lamp further includes a vehicle speed sensor, and the control means detects the driver's brake operation by the brake operation detection means, and the vehicle detection system puts the vehicle within a predetermined range in front of the host vehicle. When no other vehicle is detected, a pedestrian is detected in front of the vehicle by the pedestrian detection system, and the vehicle speed sensor is at a speed equal to or lower than a predetermined speed, the specific irradiation pattern is set. It is preferable to control the light source to form.

  In one embodiment of the present invention, the light color of the light source of the vehicle signal lamp is preferably different from the light color of the light source of the vehicle headlamp.

  In one embodiment of the present invention, the light source of the vehicle signal lamp is preferably a MacAdam ellipse having a chromaticity of 4 steps or more different from the light source of the vehicle headlamp.

  In one embodiment of the present invention, the specific irradiation pattern is preferably a linear irradiation pattern other than a straight line.

In one embodiment of the present invention, the luminance when the vehicular signal lamp illuminates the road surface is preferably 1.2 [cd./m ² ] or more.

  The present invention is a road surface irradiation system in which a specific irradiation pattern is formed in a region within 5 m from the front of the vehicle by a vehicle signal lamp mounted on the front of the vehicle together with the vehicle headlamp. , A brake operation detecting means for detecting a driver's brake operation, a specific irradiation pattern forming means for forming a specific irradiation pattern on the road surface in front of the vehicle, and a vehicle detection system for detecting another vehicle existing in front of the vehicle And a pedestrian detection system that detects a pedestrian existing in front of the vehicle, and the specific irradiation pattern forming means is configured to form a specific irradiation pattern on the road surface in front of the vehicle and the light source. An optical system for controlling light from the light source, and control means for controlling the lighting state of the light source. The control means includes a brake operation detecting means for braking the driver. When an operation is detected, no other vehicle is detected within a predetermined range in front of the own vehicle by the vehicle detection system, and a pedestrian is detected in front of the own vehicle by the pedestrian detection system, a specific irradiation pattern A road surface illumination system is provided that controls the light source so that the light source is extinguished when the brake operation detecting means detects that the driver's brake operation is in an off state. To do.

  The following contents related to road surface illumination signal lamps are included.

  Brake operation detecting means for detecting the brake operation of the driver, and specific irradiation pattern forming means for forming a specific irradiation pattern on the road surface in front of the vehicle. The specific irradiation pattern forming means is configured to detect the brake operation. When the means detects the driver's brake operation, a specific irradiation pattern is formed on the road surface in front of the vehicle.

  As a result, whether the road user in front of the vehicle (a pedestrian or an oncoming vehicle trying to cross the road at an intersection, etc.) is braked by an approaching vehicle driver (ie, decelerated, It is possible to provide a road surface illumination signal lamp that can determine whether or not there is an intention to stop. This is because, when the brake operation detecting means detects the driver's brake operation, a specific irradiation pattern is formed on the road surface in front of the vehicle by the action of the specific irradiation pattern forming means.

  The specific irradiation pattern forming means includes a light source, an optical system that controls light from the light source so that a specific irradiation pattern is formed on the road surface in front of the vehicle, and a control means that controls a lighting state of the light source. And the control means controls the light source so that the light source is turned on when the brake operation detecting means detects the driver's brake operation, and the control means does not detect the driver's brake operation when the brake operation detecting means detects the driver's brake operation. The light source is controlled so that turns off.

  Thereby, there can exist the same effect as the previous.

  The light color of the light source is different from the light color of the vehicle headlamp mounted on the vehicle together with the road surface illumination signal lamp.

  Thereby, the specific irradiation pattern formed on the road surface in front of the vehicle can be recognized separately from the irradiation pattern formed on the road surface by the light from the vehicle headlamp.

  According to the present invention, whether a road user in front of the vehicle (a pedestrian or an oncoming vehicle trying to cross the road at an intersection or the like) is braking by an approaching vehicle driver (i.e., It is possible to provide a road surface illumination signal lamp capable of determining whether there is an intention to decelerate and stop.

(A) A perspective view of a front part of a vehicle on which a road surface irradiation signal lamp 10 and vehicle headlamps 12L and 12R are mounted, and (b) a side view. 1 is a system configuration diagram in which a road surface illumination signal lamp 10 is electrically connected. It is an example of a specific irradiation pattern P formed on the road surface in front of the vehicle by the road surface irradiation signal lamp 10. This is an example of the optical system 22. This is another example of the optical system 22. (A) The subjective evaluation scale used by experiment, (b) It is the graph which put together the experimental result. 4 is a flowchart for explaining an operation example 1 of a road surface irradiation signal lamp 10; 6 is a flowchart for explaining an operation example 2 of the road surface irradiation signal lamp 10; This is an example of 4 steps of chromaticity and MacAdam of the halogen bulb TH and the discharge bulb HID used as the light source of the dual-purpose headlamps 12L and 12R.

  Hereinafter, a vehicle signal lamp (road surface irradiation signal lamp) and a road surface irradiation system according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1A is a perspective view of a front portion of a vehicle on which a road surface illumination signal lamp 10 and vehicle headlamps 12L and 12R are mounted, and FIG. 1B is a side view.

  As shown in FIGS. 1 (a) and 1 (b), the road surface illumination signal lamp 10 is mounted at the front center of the vehicle together with the vehicle headlamps 12L and 12R.

  The vehicle headlamps 12L and 12R are vehicle lamps (headlamps) configured to emit a low beam or a high beam. For example, a projector type, a reflection type (for example, a multi-reflector), a so-called direct projection type (direct projection). Various types of structures such as molds) can be used.

  The light sources (not shown) of the vehicle headlamps 12L and 12R are light sources that emit light in the white range required by law. For example, incandescent bulbs, discharge bulbs, halogen bulbs, LEDs (light emitting diodes), and LDs (lasers). Various light sources such as a semiconductor light emitting element such as a diode can be used.

  FIG. 2 is a system configuration diagram in which the road surface illumination signal lamp 10 is electrically connected.

  The road surface illumination signal lamp 10 informs other road users in front of the vehicle (such as pedestrians and oncoming vehicles that are trying to cross the road at intersections) that the driver is braking. This is a vehicle signal lamp configured to form a specific irradiation pattern P on the road surface in front of the vehicle in conjunction with the operation.

  As shown in FIG. 2, the road surface illumination signal lamp 10 includes a brake operation detecting unit 14, a specific irradiation pattern forming unit 16, and the like.

  The brake operation detection means 14 is for detecting a driver's brake operation. As the brake operation detecting means 14, for example, a means for detecting an on / off state of the brake switch 18 which is in an off state when the brake (brake pedal) is in a non-operating position and is in an on state when in a working position (depressed position). Can be used. In the present embodiment, the control device 24 functions as the brake operation detection means 14 and the like by executing a predetermined program stored in a storage device such as a RAM.

  The specific irradiation pattern forming means 16 is for forming a specific irradiation pattern P on the road surface in front of the vehicle. For example, the specific irradiation pattern P is formed on the road surface in front of the light source 20 and the vehicle. Are provided with an optical system 22 for controlling the light from the light source 20 and a control device 24 (control means) such as an ECU for controlling the lighting state of the light source 20.

  The light source 20 is a light source that emits light of a light color different from that of the light source of the vehicle headlamps 12L and 12R (for example, other than white). For example, an incandescent bulb, a discharge bulb, a halogen bulb, and an LED (light emission) Various light sources such as semiconductor light emitting devices such as diodes and LDs (laser diodes) can be used. Specifically, the light source 20 is a MacAdam ellipse having a chromaticity of 4 steps or more different from that of the vehicle headlamps 12L and 12R. This is because the MacAdam ellipse cannot distinguish two color differences if they are within 4 steps, that is, it can distinguish two color differences if they differ by 4 steps or more.

  FIG. 9 is an example of 4 steps of chromaticity and MacAdam of the halogen bulb TH and discharge bulb HID used as the light source of the vehicle headlamps 12L and 12R. In FIG. 9, “×” represents the chromaticity of the target light source, ellipses C1 and C2 surrounding the light source represent the 4-step range of the MacAdam ellipse, and symbol A represents the white range defined by the regulations. ing.

As described above, a light source that emits light of a light color different from the light color of the light source of the vehicle headlamps 12L and 12R (for example, other than white) is used as the light source 20 on the road surface in front of the vehicle. The specific irradiation pattern P to be formed can be recognized separately from the irradiation pattern formed on the road surface by the light from the vehicle headlamps 12L and 12R.

  The optical system 22 is for controlling the light from the light source 20 so that a specific irradiation pattern P is formed on the road surface in front of the vehicle.

  FIGS. 3A and 3B are examples of a specific irradiation pattern P formed on the road surface in front of the vehicle by the road surface irradiation signal lamp 10.

  As the specific irradiation pattern P, for example, a linear shape other than a straight line such as a semicircular irradiation pattern as shown in FIG. 3A or a U-shaped irradiation pattern as shown in FIG. An irradiation pattern is desirable. This is because if the specific irradiation pattern P is a linear irradiation pattern, it may be difficult to recognize depending on the viewing angle.

  FIG. 4 shows an example of the optical system 22, and FIG. 5 shows another example of the optical system 22.

  As the optical system 22, for example, as shown in FIG. 4, a transparent resin (or glass) translucent member 22 a disposed in front of the light source 20 can be used. In this case, the entrance surface 22a1 and the exit surface of the translucent member 22a so that the light from the light source 20 that is transmitted forward through the translucent member 22a forms a specific irradiation pattern P on the road surface in front of the vehicle. By configuring at least one surface shape of 22a2, a specific irradiation pattern P can be formed on the road surface in front of the vehicle.

  Further, as the optical system 22, for example, as shown in FIG. 5, a reflection surface 22 b disposed in front of the light source 20 can be used. In this case, by configuring the surface shape of the reflection surface 22b so that the light from the light source 20 reflected by the reflection surface 22b and irradiated forward forms a specific irradiation pattern P on the road surface in front of the vehicle, A specific irradiation pattern P can be formed on the road surface in front of the vehicle.

  The irradiation range of the road surface irradiation signal lamp 10 is an area within 5 m from the front of the vehicle (see FIG. 1B). This is because the area within 5 m from the front of the vehicle is a relatively dark area in which the light irradiated forward from the vehicle headlamps 12L, 12R does not irradiate the road surface (almost does not irradiate). By setting the area as the irradiation range of the road surface illumination signal lamp 10, even if the road surface illumination signal lamp 10 (light source 20) does not have high brightness, a road user (an intersection or the like) in front of the vehicle is about to cross the road. This is because a specific irradiation pattern P can be visually recognized by a pedestrian or an oncoming vehicle.

In the present embodiment, the luminance when the road surface illumination signal lamp 10 illuminates the road surface is set to 1.2 [cd./m ² ] or more from the following viewpoint.

As a result of subjective evaluation experiments, the inventors of the present application have found that there is no street lamp and the vehicle headlamps 12L and 12R are lit (road luminance 0.13 [cd / m ² ]). If the luminance when the signal lamp 10 illuminates the road surface is 1.2 [cd./m ² ] or more, it has been confirmed that the visibility is beyond the allowable limit.

The experiment was conducted when the road surface was illuminated with blue, green, and red colors with no street lamps and the vehicle headlamps 12L and 12R lit (road brightness 0.13 [cd / m ² ]). Ease was evaluated using a 9-level subjective rating scale. FIG. 6A is a subjective evaluation scale used in the experiment, and FIG. 6B is a graph summarizing the experimental results.

Referring to FIG. 6 (b), there is a correlation between the luminance and the subjective evaluation. If the luminance is 1.2 [cd / m ² ] or more, the visibility is more than an acceptable limit (9 levels). It can be seen that the subjective evaluation scale is 5 or more.

Based on the above knowledge, the luminance when the road surface illumination signal lamp 10 illuminates the road surface is set to 1.2 [cd./m ² ] or more.

  The vehicle detection system 28 is a system for detecting a vehicle existing in front of the vehicle. As the vehicle detection system 28, for example, it is conceivable to use a device that measures a distance from an object such as a laser distance meter provided at the front portion of the vehicle.

  The pedestrian detection system 30 is a system for detecting a pedestrian existing in front of the vehicle. As the pedestrian detection system 30, for example, it is conceivable to use existing technologies such as an infrared camera and a laser (for example, JP 2001-28050 A, JP 2012-234499 A).

  The control device 24 is a control device such as an ECU, for example. A light source 20, a vehicle speed sensor 26, a vehicle detection system 28, a pedestrian detection system 30 and the like are electrically connected to the control device 24. The control device 24 functions as the brake operation detection means 14 and the like by executing a predetermined program stored in a storage device such as a RAM. The control device 24 functions as a control unit that controls the lighting state of the light source 20 based on signals from the vehicle speed sensor 26, the vehicle detection system 28, the pedestrian detection system 30, the detection result of the brake operation detection unit 14, and the like. To do.

  Next, an operation example 1 of the road surface illumination signal lamp 10 having the above configuration will be described.

  FIG. 7 is a flowchart for explaining an operation example 1 of the road surface irradiation signal lamp 10.

  The following processing is mainly performed by the control device 24 such as an ECU.

  First, the control device 24 determines whether or not the depression of the brake is detected (step S2). Specifically, when the brake switch 18 is in the ON state, the control device 24 determines that the depression of the brake has been detected (that is, the brake operation detection means 14 has detected the driver's brake operation).

  Next, when it is determined that the depression of the brake is detected (step S2: Yes), the control device 24 determines whether or not the vehicle speed is 20 km / h or less (step S4), and further within 10 m before the own vehicle. It is determined whether or not there is a vehicle (step S6).

  Whether or not the vehicle speed is 20 km / h or less can be determined based on a signal from a vehicle speed sensor 26 electrically connected to the control device 24, for example. Whether or not a vehicle exists within 10 m before the host vehicle can be determined based on a signal from the vehicle detection system 28 electrically connected to the control device 24, for example.

  When the vehicle speed is 20 km / h or less (step S4: Yes) and the control device 24 determines that there is no vehicle within 10 m before the host vehicle (step S6: No), the road surface illumination signal lamp 10 (light source 20). The road surface illumination signal lamp (light source 20) is controlled so as to light up (step S8). Thereby, the road surface irradiation signal lamp 10 forms a specific irradiation pattern P on the road surface in front of the vehicle. Road users in front of the vehicle (pedestrians and oncoming vehicles trying to cross the road at intersections, etc.) visually recognize this specific irradiation pattern P, so that the driver of the approaching vehicle operates the brake. (That is, whether or not there is an intention to slow down and stop).

  Next, the control device 24 determines whether or not the brake switch 18 is in an off state (step S10).

  And the control apparatus 24 controls the road surface irradiation signal lamp 10 (light source 20) so that the road surface irradiation signal lamp 10 (light source 20) will turn off, when the brake switch 18 is an OFF state (step S10: Yes) (step S10: Yes). S12).

  Next, an operation example 2 of the road surface illumination signal lamp 10 having the above configuration will be described.

  FIG. 8 is a flowchart for explaining an operation example 2 of the road surface illumination signal lamp 10, and a pedestrian detection step (step S26) is added to the flowchart shown in FIG.

  The following processing is mainly performed by the control device 24 such as an ECU.

  First, the control device 24 determines whether or not a brake depression has been detected (step S20). Specifically, when the brake switch 18 is in the ON state, the control device 24 determines that the depression of the brake has been detected (that is, the brake operation detection means 14 has detected the driver's brake operation).

  Next, when it is determined that the depression of the brake has been detected (step S20: Yes), the control device 24 determines whether the vehicle speed is 20 km / h or less (step S22), and the vehicle is within 10 m before the own vehicle. Is determined (step S24), and it is further determined whether or not a pedestrian is detected in front of the vehicle (step S26).

  Whether or not the vehicle speed is 20 km / h or less can be determined based on a signal from a vehicle speed sensor 26 electrically connected to the control device 24, for example. Whether or not a vehicle exists within 10 m before the host vehicle can be determined based on a signal from the vehicle detection system 28 electrically connected to the control device 24, for example. Whether or not a pedestrian has been detected in front of the host vehicle can be determined based on, for example, a signal from the pedestrian detection system 30 electrically connected to the control device 24.

  The control device 24 determines that the vehicle speed is 20 km / h or less (step S22: Yes), the vehicle does not exist within 10 m before the host vehicle (step S24: No), and a pedestrian is detected in front of the host vehicle. If (step S26: Yes), the road surface irradiation signal lamp 10 (light source 20) is controlled so that the road surface irradiation signal lamp 10 (light source 20) is lit (step S28). Thereby, the road surface irradiation signal lamp 10 forms a specific irradiation pattern P on the road surface in front of the vehicle. Road users in front of the vehicle (pedestrians and oncoming vehicles trying to cross the road at intersections, etc.) visually recognize this specific irradiation pattern P, so that the driver of the approaching vehicle operates the brake. (That is, whether or not there is an intention to slow down and stop).

  Next, the control device 24 determines whether or not the brake switch 18 is in an off state (step S30).

  And the control apparatus 24 controls the road surface irradiation signal lamp 10 (light source 20) so that the road surface irradiation signal lamp 10 (light source 20) will turn off, when the brake switch 18 is an OFF state (step S30: Yes) (step S30: Yes). S32).

  As described above, according to the road surface illumination signal lamp 10 of the present embodiment, a road user in front of the vehicle (a pedestrian or an oncoming vehicle trying to cross the road at an intersection or the like) It is possible to provide a road surface illumination signal lamp that can determine whether or not the driver is operating a brake (that is, whether or not there is an intention to decelerate and stop). This is because, when the brake operation detecting means 14 detects the driver's brake operation (step S2: Yes, step S20: Yes), the specific irradiation pattern forming means 16 causes the specific irradiation on the road surface in front of the vehicle. This is because the pattern P is formed.

  Moreover, according to the road surface irradiation signal lamp 10 of this embodiment, even if the road surface irradiation signal lamp 10 (light source 20) does not have high brightness, a road user (a pedestrian who is going to cross the road at an intersection or the like). Or an oncoming vehicle or the like) can visually recognize the specific irradiation pattern P. This is because in the area within 5 m from the front of the vehicle where the specific irradiation pattern P is formed, the light irradiated forward from the vehicle headlamps 12L and 12R does not irradiate the road surface (almost no irradiation). This is due to the relatively dark area.

  The above embodiment is merely an example in all respects. The present invention is not construed as being limited to these descriptions. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

  DESCRIPTION OF SYMBOLS 10 ... Road surface irradiation signal lamp, 12L, 12R ... Vehicle headlamp, 14 ... Brake operation detection means, 16 ... Specific irradiation pattern formation means, 18 ... Brake switch, 20 ... Light source, 22 ... Optical system, 22a ... Translucent Member, 22a1 ... incidence surface, 22a2 ... emission surface, 22b ... reflection surface, 24 ... control device

Claims (7)

A vehicle signal lamp that is mounted on a vehicle front together with a vehicle headlamp and forms a specific irradiation pattern in an area within 5 m from the vehicle front,
The vehicle signal lamp is
Brake operation detection means for detecting the driver's brake operation;
Specific irradiation pattern forming means for forming the specific irradiation pattern on the road surface in front of the vehicle;
A vehicle detection system for detecting other vehicles in front of the vehicle;
A pedestrian detection system for detecting a pedestrian existing in front of the vehicle,
The specific irradiation pattern forming means includes:
A light source;
An optical system that controls light from the light source so that the specific irradiation pattern is formed on the road surface in front of the vehicle;
Control means for controlling the lighting state of the light source,
The control means includes
The brake operation of the driver is detected by the brake operation detection means,
When the vehicle detection system detects the pedestrian in front of the host vehicle without detecting the other vehicle within a predetermined range in front of the host vehicle and the pedestrian detection system, the specific irradiation pattern is set. Controlling the light source to form,
A vehicular signal lamp, wherein the light source is controlled to be turned off when the brake operation detecting means detects that the driver's brake operation is in an off state. The vehicle signal lamp further includes a vehicle speed sensor,
The control means includes
The brake operation of the driver is detected by the brake operation detection means,
The vehicle detection system does not detect the other vehicle within a predetermined range in front of the host vehicle, the pedestrian detection system detects a pedestrian in front of the host vehicle, and the vehicle speed sensor detects the vehicle speed of the host vehicle. 2. The vehicular signal lamp according to claim 1, wherein the light source is controlled so as to form the specific irradiation pattern when is a predetermined speed or less. 3.   The vehicle signal lamp according to claim 1 or 2, wherein a light color of the light source of the vehicle signal lamp is different from a light color of the light source of the vehicle headlamp.   4. The vehicular signal lamp according to claim 3, wherein the light source of the vehicular signal lamp is a MacAdam ellipse and has a chromaticity of 4 steps or more different from the light source of the vehicular headlamp.   The vehicular signal lamp according to any one of claims 1 to 4, wherein the specific irradiation pattern is a linear irradiation pattern other than a straight line. 6. The vehicle signal lamp according to claim 1, wherein the vehicle signal lamp has a luminance of 1.2 [cd./m ² ] or more when illuminated on a road surface. . A road surface irradiation system that forms a specific irradiation pattern in an area within 5 m from the front of the vehicle by a vehicle signal lamp mounted on the front of the vehicle together with the vehicle headlamp,
The road surface irradiation system is:
Brake operation detection means for detecting the driver's brake operation;
Specific irradiation pattern forming means for forming the specific irradiation pattern on the road surface in front of the vehicle;
A vehicle detection system for detecting other vehicles in front of the vehicle;
A pedestrian detection system for detecting a pedestrian existing in front of the vehicle,
The specific irradiation pattern forming means includes:
A light source;
An optical system that controls light from the light source so that the specific irradiation pattern is formed on the road surface in front of the vehicle;
Control means for controlling the lighting state of the light source,
The control means includes
The brake operation of the driver is detected by the brake operation detection means,
When the vehicle detection system detects the pedestrian in front of the host vehicle without detecting the other vehicle within a predetermined range in front of the host vehicle and the pedestrian detection system, the specific irradiation pattern is set. Controlling the light source to form,
The road surface irradiation system, wherein the light source is controlled to be turned off when the brake operation detecting means detects that the driver's brake operation is in an off state.

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