Vehicle warning system, vehicle meter device, and program

Abstract

The invention provides a warning system for a vehicle, a meter device for a vehicle, and a program, which can reduce the possibility of unnecessarily causing attention and hindering safe driving in a scene where passengers taking the vehicle drive intensively. A vehicle warning system (100) is provided with: a surroundings detection unit (21) that detects information about the surroundings of a vehicle; a speed detection unit (22) that detects the speed of the vehicle; a tilt detection unit (23) that detects the tilt of the vehicle; a light source (13) that emits warning information display light; and a control unit (11) that turns on the light source or changes the light emission color of the light source when an occupant of the vehicle is warned on the basis of the signal generated by the surroundings detection unit, the control unit performing control so as to turn on the light source or change the light emission color of the light source when it is determined that the vehicle is traveling on a curve on the basis of the signals generated by the speed detection unit and the tilt detection unit, and when it is determined that the vehicle is traveling on the curve on the basis of the signals generated by the speed detection unit and the tilt detection unit. The light source is not turned on.

Description

TECHNICAL FIELD

[0001] The present application relates to a vehicle warning system or the like that acquires various information related to the surroundings of a vehicle and the state of the vehicle, and warns an occupant of the vehicle based on the information. BACKGROUND

[0002] Among vehicle-mounted devices mounted on a vehicle, there is a device that issues a warning of the presence of an obstacle, overspeeding, or the like to an occupant of the vehicle based on information on the surroundings of the vehicle including an obstacle, information on the state of the vehicle such as the speed and the rotation speed of the vehicle.

[0003] For example, in Patent Literature 1, there is described a vehicle instrument device having a light source and a control unit that acquires information on the state of the vehicle from a vehicle ECU (Electronic Control Unit), and determines whether or not to issue a warning based on the acquired information, and in the case of issuing a warning, illuminates the light source or changes the emission color of the light source.

[0004] PATENT LITERATURE

[0005] Patent Literature 1: Japanese Patent No. 6273772 (see paragraph

[0006] ) SUMMARY

[0006] PROBLEMS TO BE SOLVED BY THE INVENTION

[0007] The vehicle instrument device described in Patent Literature 1, for example, is mounted on a vehicle such as a two-wheeled vehicle, and in addition to informing an occupant of the vehicle of information on the vehicle obtained from a speedometer and a tachometer, makes the occupant visually recognize the presence of a warning by display light that is diffusely reflected, whereby the occupant of the vehicle can easily grasp the warning from the vehicle. However, according to the technology described in Patent Literature 1, for example, if a warning is issued in a situation in which the occupant is concentrating on driving, such as when driving on a curve, the occupant's attention is unnecessarily drawn, and as a result, there is a possibility that safe driving is hindered.

[0008] Therefore, an object of the present application is to provide a vehicle warning system or the like that reduces the possibility that safe driving is hindered by the occupant's attention being unnecessarily drawn in a situation in which the occupant is concentrating on driving.

[0009] Other objects of the present application will be apparent to those skilled in the art from consideration of the following example and preferred embodiments, and from the accompanying drawings.

[0010] TECHNICAL SOLUTION

[0011] Hereinafter, in order to easily understand the gist of the present application, an example according to the present application will be described.

[0012] The first aspect of the present application provides a warning system for a vehicle, including: a surrounding detection unit that detects surrounding information of the vehicle; a speed detection unit that detects a speed of the vehicle; a tilt detection unit that detects a tilt of the vehicle; a light source that emits display light of warning information; and a control unit that, in a case where a passenger riding in the vehicle is warned based on a signal generated by the surrounding detection unit, illuminates the light source or changes a light emission color of the light source, the control unit controlling in such a manner that, in a case where it is determined, based on signals generated by the speed detection unit and the tilt detection unit, that the vehicle is traveling on a curve, the illumination of the light source is not performed.

[0013] In the first aspect, the control unit controls in such a manner that, in a case where it is determined, based on signals generated by the speed detection unit and the tilt detection unit, that the vehicle is traveling on a curve, the illumination of the light source is not performed. Here, the warning information refers to awareness of the presence of an obstacle on a road, such as a preceding vehicle, the approach of a following vehicle, or the forgetting of turning off a flashing turn signal, and the like, and any one of the illumination or flickering light emission, or the like, of the light source is used to preliminarily set a color tone (light emission color) in this case (for example, the presence of a preceding vehicle is yellow, and the approach of a following vehicle is red), so that the passenger (mainly the driver) can be aware of the presence or approach of the obstacle, or the like. In addition, the speed detection unit is, for example, a speed sensor installed on a wheel of the vehicle, and is capable of detecting the speed of the vehicle from the rotational speed of the wheel and the outer circumference dimension of the tire. In addition, the tilt detection unit is, for example, an IMU (Inertial Measurement Unit) sensor that calculates a roll angle and a pitch angle based on measured acceleration and angular velocity, and these roll angle and pitch angle correspond to the tilt (tilt information). Furthermore, in a case where a two-wheeled vehicle is used as the vehicle, the roll angle is used as the tilt information.

[0014] According to the first aspect, the passenger can be aware of the presence or approach of the obstacle through the warning, and on the other hand, in a case where it is determined that the vehicle is traveling on a curve, the control is performed so that the illumination of the light source is not performed, so that the warning is suppressed in a scenario in which the passenger focuses on the control of the vehicle while traveling on a curve, and as a result, the possibility that the safe driving is hindered by the unnecessary attention caused by the warning can be reduced through the warning.

[0015] In the second aspect depending on the first aspect, the control unit can also control in such a manner that, in a case where it is determined, based on a signal generated by the speed detection unit, that the vehicle is traveling, and based on a signal generated by the tilt detection unit, that the vehicle is continuously tilted in the same direction for a prescribed time, the illumination of the light source is not performed.

[0016] Here, "same direction" refers, for example, to driving a two-wheeled vehicle by tilting the vehicle towards the inside of the curve while driving on a curve, thus, for example... Figure 1 B As shown, the angle θ indicates a tilt to the left or to the right (not shown) at an angle θ. Here, the tilt (positive direction) of the former is set as a positive angle, and the tilt (negative direction) of the latter is set as a negative angle. Furthermore, the "specified time" is a time or time range that is pre-determined as the most suitable time for determining the cornering conditions through test driving for each type of vehicle, for example, it is pre-stored... Figure 2 The threshold information of the storage unit 12 shown. In the second aspect, the control unit controls the vehicle in such a way that if it is determined that the vehicle is in motion based on the signal generated by the speed detection unit, and if it is determined that the vehicle is continuously tilted in the same direction (positive angle or negative angle) for a specified time based on the signal generated by the tilt detection unit, the light source is not turned on. Therefore, for example, when a two-wheeled vehicle is used, if the passenger falls while straddling the vehicle while it is parked, it will not be determined as "driving on a curve". In addition, the correction balance during straight driving will not be determined as "driving on a curve". Therefore, for example, compared with the existing method that determines "driving on a curve" when the tilt angle or lateral G is a fixed value or above, it is possible to correctly determine "driving on a curve".

[0017] Judgment

[0018] In a third aspect subordinate to the first aspect, the control unit may also control the light source in such a way that if the signal generated by the tilt detection unit exceeds a threshold for vehicle tilt that is preset according to the vehicle's speed, the light source is not illuminated.

[0019] In the third aspect, the control unit controls the vehicle in such a way that if the signal generated by the tilt detection unit exceeds a vehicle tilt threshold preset according to the vehicle's speed, the light source is not illuminated. Therefore, for example, in scenarios such as making a U-turn at very low speed in a two-wheeled vehicle or passing through a curve while drifting, it is conceivable that a warning would be issued when the vehicle body is in a roughly upright position. Therefore, by setting the tilt threshold according to the speed, it is possible to suppress the issuance of warnings in such scenarios. As a result, it is possible to reduce the possibility of unnecessary attention caused by warnings that may hinder safe driving.

[0020] In a fourth aspect subordinate to the third aspect, the control unit may also reflect the radius of curvature of the curve obtained from the outside in the setting of the threshold for vehicle tilt.

[0021] In the fourth aspect, the control section can make a more correct determination of "in a curve" by reflecting the radius of curvature of the curve in the setting of the threshold for the vehicle inclination, for example, by weighting the threshold set in advance based on the radius of curvature. Further, the radius of curvature of the curve can be calculated by an operation based on positional information of the vehicle and map information, or a relationship matching a gravitational force and a centrifugal force applied to the vehicle in curve running.

[0022] According to a fifth aspect of the present application, there is provided a vehicle instrument device including a light source that emits display light of warning information and a control section that acquires from outside state information relating to a vehicle, determines whether or not to give a warning to an occupant who gets on the vehicle based on the acquired state information, and gives the warning by lighting the light source or changing the emission color of the light source, in which the control section controls in such a manner that the display light emitted from the light source when the light source is lit is transmitted toward a light-transmitting member provided on the vehicle in a manner to cover an upper space of a housing member, and an occupant who gets on the vehicle visually recognizes a virtual image generated by reflection on a windshield, and in the case where it is determined based on signals acquired from a speed detection section and an inclination detection section mounted on the vehicle that the vehicle is running on a curve, the lighting of the light source is not performed.

[0023] In the fifth aspect, there is provided a vehicle instrument device in which the control section controls in such a manner that the display light emitted from the light source when the light source is lit is transmitted toward a light-transmitting member provided on the vehicle in a manner to cover an upper space of a housing member, and an occupant who gets on the vehicle visually recognizes a virtual image generated by reflection on a windshield, and in the case where it is determined based on signals acquired from a speed detection section and an inclination detection section mounted on the vehicle that the vehicle is running on a curve, the lighting of the light source is not performed. Thus, for example, the control is performed in such a manner that in the case where there is a preceding vehicle or a following vehicle, any one of lighting or blinking of the light source, etc. is performed to preliminarily determine the color tone (emission color) in this case (for example, the presence of the preceding vehicle is yellow, and the approach of the following vehicle is red), so that the occupant (mainly the driver) can know the presence or approach of an obstacle, etc. from the warning information, and on the other hand, in the case where it is determined that the vehicle is running on a curve, the lighting of the light source is not performed, so that the warning is suppressed in the scene where the occupant concentrates on the control of the vehicle in curve running, and as a result, the possibility that the safe driving is hindered by unnecessary attention due to the warning can be reduced.

[0024] A sixth aspect of the present application provides a program that is a program for a vehicle instrument device that has a light source that emits display light of warning information and a control section that acquires state information related to a vehicle from the outside, determines whether or not to warn an occupant who rides in the vehicle based on the acquired state information, and performs the warning by lighting the light source or changing the light emission color of the light source. In the program, a processor that the control section has executes the following processes: acquires the surrounding information of the vehicle; acquires the speed information of the vehicle; acquires the inclination information of the vehicle; and in a case where it is determined based on the state information related to the vehicle that includes the acquired speed information of the vehicle and the inclination information of the vehicle that the vehicle is traveling on a curve, controls so as not to perform lighting of the light source.

[0025] In the sixth aspect, the processor that the control section has executes the following processes: reads out a program stored in a storage section, and in a case where it is determined based on state information related to a vehicle that includes the speed of the vehicle and the inclination of the vehicle acquired from the outside that the vehicle is traveling on a curve, controls so as not to perform lighting of the light source, for example, controls in such a manner that in a case where there is a preceding vehicle or a following vehicle that is approaching, the color tone in that case is determined in advance (for example, the presence of a preceding vehicle is yellow and the approach of a following vehicle is red) by any one of lighting of the light source or flashing light emission, and the like, so that the occupant (mainly the driver) can be aware of the presence or approach of an obstacle, and on the other hand, in a case where it is determined that the vehicle is traveling on a curve, lighting of the light source is not performed, so that the situation in which the occupant is focused on the control of the vehicle in traveling on a curve is suppressed from being warned, and as a result, the possibility that safe driving is hindered by unnecessary attention due to the warning can be reduced.

[0026] Those skilled in the art will readily understand that the example manner according to the present application can be further modified without departing from the spirit of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A is a view that shows the mounting structure of the constituent parts when the vehicle warning system of the embodiment of the present application is applied to a two-wheeled vehicle.

[0028] Figure 1 B is a view that is referred to in order to explain the posture of a two-wheeled vehicle in traveling.

[0029] Figure 2 is a block diagram that shows the system structure of the vehicle warning system of the embodiment of the present application.

[0030] Figure 3 is a block diagram that shows the structure of the vehicle instrument device of the embodiment of the present application.

[0031] Figure 4 is a flowchart showing the operation of the vehicle warning system of the embodiment of the present application.

[0032] Explanation of Reference Signs

[0033] 1 vehicle; 10 vehicle instrument device; 11 control section; 11' control substrate; 12 storage section; 13 light source; 14 light-transmissive resin glass (light-transmissive member); 15 housing member; 16 windshield; 17 virtual image; 18 occupant; 20 ECU; 21 surrounding detection section; 22 speed detection section; 23 inclination detection section; 30 I / O interface; 100 vehicle warning system. DETAILED DESCRIPTION

[0034] The best mode described below is used for easy understanding of the present application. Therefore, the person skilled in the art should note that the present application is not unduly limited by the embodiment described below (hereinafter, referred to as the present embodiment).

[0035] [Structure of Embodiment]

[0036] (Structure of Vehicle Warning System 100)

[0037] Reference Figure 1 A . Figure 1 A is a view showing the mounting structure of the structural parts when the vehicle warning system of the present embodiment (refer to 100 in Figure 2 ) is applied to a two-wheeled vehicle. As shown in Figure 1 A , the vehicle warning system 100 of the present embodiment is mounted on a vehicle 1 such as a two-wheeled vehicle, and on the vehicle 1, a vehicle instrument device 10 including a control section (refer to 11 in Figure 2 ) and a light source 13 described later, an ECU (Electronic Control Unit) 20, a surrounding detection section 21, a speed detection section 22, and an inclination detection section 23 are mounted. In addition, the symbol 16 indicates a laminated glass provided on the front surface of the vehicle 1, that is, a windshield having a windscreen function.

[0038] The control section 11 is configured to acquire signals output from the surrounding detection section 21, the speed detection section 22, and the inclination detection section 23 mounted on the vehicle 1 via the ECU 20, and in the case of issuing a warning, the light source 13 is lit. The surrounding detection section 21 is, for example, a millimeter wave radar, and detects the presence of an obstacle on a road such as another vehicle, a pedestrian, or the like in front of or behind the vehicle 1 (the host vehicle) and outputs to the ECU 20. In addition, the surrounding detection section 21 is not limited to a millimeter wave radar, and for example, an obstacle including a preceding vehicle, an approaching rear vehicle, or a pedestrian can be detected by performing image recognition on an image captured by a front camera, a rear camera, or the like mounted on the vehicle 1.

[0039] The speed detection section 22 is, for example, a speed sensor installed near a wheel of the vehicle 1, which detects the speed of the vehicle 1 from the rotation speed of the wheel and the outer circumference size of the tire and outputs to the ECU 20. The inclination detection section 23 is, for example, a 6-axis IMU sensor, which can measure the 6-axis inertia force of the 3-axis (front-rear, left-right, up-down) acceleration and 3-axis angular velocity applied to the vehicle 1, and detects the driving state of the vehicle 1 such as the pitch, roll, yaw angle, and straight driving, skidding, turning state of the vehicle 1 from the measured acceleration and angular velocity information, and outputs to the ECU 20 at regular intervals (for example, 10 msec cycle). The control section 11 can acquire the inclination of the vehicle 1 when the vehicle 1 is driving based on the detection result of the inclination detection section 23 (refer to the inclination angle θ in FIG. 6). Figure 1 B The inclination detection section 23 is, for example, a 6-axis IMU sensor, which can measure the 6-axis inertia force of the 3-axis (front-rear, left-right, up-down) acceleration and 3-axis angular velocity applied to the vehicle 1, and detects the driving state of the vehicle 1 such as the pitch, roll, yaw angle, and straight driving, skidding, turning state of the vehicle 1 from the measured acceleration and angular velocity information, and outputs to the ECU 20 at regular intervals (for example, 10 msec cycle). The control section 11 can acquire the inclination of the vehicle 1 when the vehicle 1 is driving based on the detection result of the inclination detection section 23 (refer to the inclination angle θ in FIG. 6).

[0040] Refer to FIG. 6. Figure 1 B . Figure 1 B is a figure cited to explain the posture of a two-wheeled vehicle in driving. The occupant (driver) needs to always grasp how to drive at what speed and at what inclination (inclination angle θ) according to the size of the curvature of the curve to be driven in, in order to perform the best driving without falling down when driving with the two-wheeled vehicle (particularly, when turning). For example, when the two-wheeled vehicle is turning, the gravitational force Mg determined by the weight of the vehicle body and the weight of the occupant (driver) acts on the center of gravity X. Here, if the driving speed of the two-wheeled vehicle is set to V and the radius of the curve is set to R, the gravitational force Mg acts on the center of gravity X in the vertical direction, and the centrifugal force Y = MV2 / R determined by the speed V and the radius R acts on the center of gravity X outward in the radius direction of the curve. In order to counter this, normally, the driver generates the centripetal force Z by inclining the vehicle body of the two-wheeled vehicle inward (left side in the figure) by the inclination angle θ (inclination angle) to cancel the centrifugal force Y.

[0041] The explanation will be returned to Figure 1 A , the control section 11 acquires the signals output from the surrounding detection section 21, the speed detection section 22, and the inclination detection section 23 from the ECU 20, and in the case where it is determined that the vehicle 1 is in driving and the vehicle 1 is in the turning state (in curve driving), it is determined that the warning about the surrounding obstacle is not needed. In addition, in the case where it is determined that the vehicle 1 is in driving and the vehicle 1 is not in the turning state (in curve driving), or the vehicle 1 is in straight driving, and it is determined that the surrounding obstacle needs the warning, the light source 13 is lit (also includes blinking) according to the warning content, or the light emission color is changed, and in addition, the control of the lighting interval of the light source 13 is changed. Thereby, the occupant can know the existence or approach of the obstacle through the warning, and on the other hand, it is possible to reduce the possibility of unnecessarily causing attention in the scene of concentrating on driving in curve driving, and hindering the safe driving.

[0042] Referring to Figure 2 . Figure 2 is a block diagram showing a system configuration of the vehicle warning system 100 of the embodiment. As shown in Figure 2 , in the vehicle warning system 100 of the embodiment, the vehicle instrument device 10 and the ECU 20 are connected in a manner capable of bidirectional communication via the I / O interface 30.

[0043] The vehicle instrument device 10 includes a control section 11, a storage section 12, and a light source 13 that emits a display light L (refer to Figure 3 ) of warning information. The control section 11 lights up the light source 13 or changes the emission color of the light source 13 at the time of warning. In the case of warning to the occupant 18 (refer to Figure 3 ), the control section 11 can make the display light L emitted toward the windshield 16 (refer to Figure 3 ) by making the light source 13 light up in a prescribed emission color or making it flicker, and make it reflected toward the occupant side as a virtual image 17 (refer to Figure 3 ) to visually recognize the existence of the warning information.

[0044] A processor (CPU: Central Processing Unit) is installed in the control section 11, and a storage element such as a RAM (Random Access Memory) or a ROM (Read Only Memory) to which a program area and a work area are allocated is installed in the storage section 12. The program of the embodiment executed by the processor is allocated to the program area, and various information such as the speed, the inclination, the information of the periphery of the vehicle 1, or the curve determination condition (threshold information or the like) or the light-up flag described later generated by the program is allocated to the work area and stored respectively. Further, the light source 13 is constituted by, for example, an LED (Light Emitting Diode) that emits one shade (emission color) of light in singular, and can also be plural and emit light of different shades (emission colors) each. Also, the shade can be changed by the combination of the light sources 13 of three primary colors.

[0045] The control section 11 can turn on the light source 13 that emits a warning message, or change the light emission color of the light source 13, in a case where the occupant of the vehicle 1 is warned based on a signal (surrounding information) generated by the surrounding detection section 21. Here, the warning message refers to information on an obstacle on the road, such as the presence of a vehicle ahead, the approach of a vehicle behind, or the forgetting of turning off a flashing direction indicator, and the occupant (driver) can recognize the presence or approach of the obstacle or the like by any one of turning on the light source 13, or flickering light emission, and the like, with the hue (light emission color) in this case being predetermined (for example, the presence of a vehicle ahead is yellow, and the approach of a vehicle behind is red).

[0046] The control section 11 can perform control not to turn on the light source 13 in a case where it is determined that the vehicle 1 is traveling on a curve, based on signals (speed information and inclination information) generated by the speed detection section 22 and the inclination detection section 23. In this way, by performing control not to turn on the light source 13 when it is determined that the vehicle 1 is traveling on a curve, it is possible to suppress the situation where the occupant (driver) concentrates on the control of the vehicle 1 in the warning in the traveling on a curve, and as a result, it is possible to reduce the possibility of hindering safe driving due to unnecessary attention caused by the warning.

[0047] The control section 11 can perform control not to turn on the light source 13 in a case where it is determined that the vehicle 1 is traveling, based on a signal generated by the speed detection section 22, and it is determined that the vehicle 1 is continuously inclined in the same direction for a prescribed time, based on a signal generated by the inclination detection section 23. Here, the "same direction" refers to, for example, when a two-wheeled vehicle is used as the vehicle 1, the vehicle body is driven with the inside of the curve in the traveling on a curve, and thus, for example, as shown in FIG. 6, the inclination angle θ to the left side direction, or the inclination angle θ to the right side direction omitted from illustration, is used, and here, the former inclination (positive direction) is set to a positive angle, and the latter inclination (negative direction) is set to a negative angle. Figure 1 B The "prescribed time" is a threshold value information that is determined as the most suitable time or time range as a curve determination condition by test driving or the like for each vehicle model, and is stored in the storage section 12 in advance.

[0048] The control section 11 can perform control such that the light source 13 is not illuminated in a case where the signal generated by the inclination detection section 23 exceeds a threshold value of the inclination of the vehicle 1 that is set in advance in accordance with the speed of the vehicle 1. At this time, the radius of curvature of the curve obtained from the outside can be reflected in the setting of the threshold value of the inclination of the vehicle 1. Further, the threshold value of the inclination set in accordance with the speed is, for example, a measure for suppressing the issuance of a warning in a state in which the vehicle body is substantially upright in a scene in which a U-turn is made at an extremely low speed in a two-wheeled vehicle or a scene in which a curve is passed in drift running, and the threshold value in this case is also an optimum value or range that is obtained in advance by test running and stored in a prescribed region of the storage section 12. Further, by reflecting the radius of curvature of the curve in the setting of the threshold value of the inclination of the vehicle 1, for example, by weighting the threshold value set in advance based on the radius of curvature, more correct determination of "curve running" can be performed. Further, the radius of curvature of the curve can be calculated by calculation based on the positional information of the vehicle and map information or a relationship in which the gravitational force Mg (refer to Figure 1 B ) and the centrifugal force Y (refer to Figure 1 B ) applied to the vehicle 1 in curve running are matched.

[0049] Further, the ECU 20 is an electronic control unit that transmits the signals detected by the surrounding detection section 21, the speed detection section 22, and the inclination detection section 23 to the vehicle instrument device 10 (control section 11) via the I / O interface 30. The ECU 20 can also detect the control of the drive system, the steering system, and the brake system of the vehicle 1 or the start of the vehicle 1 (the turning on of the ignition switch IG).

[0050] The I / O interface 30 performs communication (CAN communication) with the ECU 20 (Electronic Control Unit) provided on the vehicle 1 and other components, which are omitted from illustration, in accordance with the specification of CAN (Control Area Network), for example. Furthermore, the communication specification employed by the I / O interface 30 is not limited to CAN, and includes, for example, CANFD (CAN with Flexible Data Rate), LIN (Local Interconnect Network), Ethernet (registered trademark), MOST (Media Oriented Systems Transport), UART (Universal Asynchronous Receiver Transmitter), or USB (Universal Serial Bus), and the like, a wired communication interface, or a vehicle interior communication (internal communication LAN) interface capable of close-range wireless communication within several tens of meters, such as Bluetooth (registered trademark), a personal area network (PAN), 802.11x Wi-Fi (registered trademark), a local area network, and the like.

[0051] In addition, the I / O interface 30 can also include a vehicle exterior communication (external communication) interface, such as a wide area communication network (for example, an Internet communication network), in accordance with a wireless wide area network (WAN, IEEE 802.16-2004 (WiMAX: World Wide Interoperability for Microwave Access), IEEE 802. e reference (Mobile WiMAX) 4G, 4G-LTE, LTE Advanced, 5G, and the like, cellular mobile communication specifications.

[0052] Structure of the vehicle instrument device 10

[0053] Reference Figure 3 . Figure 3 is a block diagram showing the structure of the vehicle instrument device 10 of the present embodiment. As shown in Figure 3 , the vehicle instrument device 10 of the present embodiment includes a control substrate 11' on which the control section 11, the storage section 12, and the light source 13 shown in Figure 2 , and a housing member 15 that holds the light-transmissive resin glass 14 (light-transmissive member) that transmits the display light L of the light source 13.

[0054] The light-transmissive resin glass 14 (light-transmissive member) is composed of, for example, an injection-molded product of transparent PMMA (polymethyl methacrylate) to transmit the display light L from the light source 13 toward the windshield 16. The housing member 15 is, for example, a black AES (acrylonitrile ethylene styrene) injection-molded product that holds the light-transmissive resin glass 14 by insert molding and accommodates the control substrate 11' with a waterproof and dustproof function. The windshield 16 is made of, for example, a light-transmissive PC (polycarbonate) material by injection molding to be provided to the vehicle 1 in a manner of covering the upper space of the vehicle instrument device 10 of the embodiment, to secure the front view while controlling the wind in contact with the occupant (driver) at the same time. The virtual image 17 is a reflection image of the display light L emitted from the vehicle instrument device 10 (light source 13) of the embodiment to be generated by the reflection of the windshield 16 to be visually recognized by the occupant 18 (driver).

[0055] As described above, the vehicle instrument device 10 of the embodiment is provided with the light source 13 that emits the display light L of the warning information and the control section 11 that acquires the state information relating to the vehicle 1 from the outside, determines whether or not to warn the occupant (driver 18) who rides the vehicle 1 based on the acquired state information, and warns by lighting the light source 13 or changing the emission color of the light source 13. Further, the control section 11 controls in such a manner that the display light L emitted from the light source 13 at the time of lighting the light source 13 is transmitted toward the light-transmissive member (light-transmissive resin glass 14) provided to the vehicle 1 in a manner of covering the upper space of the housing member 15, the occupant 18 who rides the vehicle 1 visually recognizes the virtual image 17 generated by the reflection of the windshield 16, and further, in a case where it is determined based on the signals acquired from the speed detection section 22 (refer to Figure 1 A 、 Figure 2 ) and the inclination detection section 23 (refer to Figure 1 A 、 Figure 2 ) that the vehicle 1 is running on a curve, the lighting of the light source 13 is not performed.

[0056] Thus, for example, it is possible to provide a vehicle instrument device 10 that is controlled in such a manner that in a case where there is a preceding vehicle or a following vehicle approaching, any one of the lighting or the flashing emission of the light source 13 is performed to preliminarily determine the color tone (emission color) in the case (for example, the presence of the preceding vehicle is yellow and the approach of the following vehicle is red), so that the occupant (mainly the driver 18) can know the presence or the approach of the obstacle and the like, and on the other hand, in a case where it is determined that the vehicle 1 is running on a curve, the lighting of the light source 13 is not performed, so that it is possible to suppress the warning in a situation where the occupant 18 concentrates on the control of the vehicle 1 in the running on the curve, and as a result, it is possible to reduce the possibility that the safe driving is hindered by the unnecessary attention due to the warning.

[0057] [Embodiment Action]

[0058] Referring to Figure 4 . Figure 4 is a flowchart showing the action of the vehicle warning system 100 of the embodiment. Hereinafter, the action of the vehicle warning system 100 of the embodiment shown in Figure 4 will be explained in detail Figure 1 A , Figure 1 B , Figure 2 the action of the vehicle warning system 100 of the embodiment shown in FIG. 1, particularly the processing sequence of the control section 11.

[0059] In Figure 4 , the control section 11 first detects the start of the vehicle 1 (step ST101). Here, the ECU 20 informs the control section 11 of the turn-on of the ignition switch (IG) (IG-on) by detecting it, and the control section 11 can detect the start of the vehicle 1. The control section 11 acquires speed information and inclination information (inclination angle θ of the vehicle 1) when it confirms the start of the vehicle 1 (step ST101 "Yes") (steps ST102, ST103). Here, the speed information can be acquired via the ECU 20 from the signal detected by the speed detection section 22, and the inclination information can be acquired via the ECU 20 from the signal (roll angle) detected by the inclination detection section 23.

[0060] Next, the control section 11 determines whether the vehicle 1 is in straight traveling based on the acquired speed information and inclination information (step ST104). Here, in the case where it is determined that the vehicle 1 is in straight traveling (step ST104 "Yes"), the control section 11 further acquires surrounding information of the vehicle 1 (step ST105). Here, the surrounding information is, for example, the presence or absence of a preceding vehicle, the approach of a following vehicle, and the like, and includes the information on the traveling environment of the vehicle 1 including obstacles around the vehicle 1 in traveling, which the control section 11 can acquire via the ECU 20 from the signal detected by the surrounding detection section 21. Next, the control section 11 determines, for example, the presence or absence of a preceding vehicle, the approach of a following vehicle, and the like based on the signal output from the surrounding detection section 21 (step ST106).

[0061] When it is confirmed that an obstacle exists (step ST106 "Yes"), the control section 11 turns on the illumination flag assigned and stored in the prescribed area of the storage section 12 (step ST107), and issues a warning by performing illumination control on the light source 13 (step ST108). When it is not possible to confirm the existence of an obstacle (step ST106 "No"), the control section 11 performs control in such a manner that the illumination flag assigned and stored in the prescribed area of the storage section 12 is turned off (step ST110) and the light source 13 is set to non-illumination, and no warning is issued (no warning) (step ST111). Furthermore, the warning can be issued by any one of the illumination of the light source 13, or blinking light, and the like, and the color tone (light emission color) in this case is predetermined (for example, the existence of a vehicle in front is yellow, and the approach of a vehicle from behind is red), so that the occupant 18 (see FIG. 1) is made aware of the existence or approach of an obstacle, and the like. Figure 3

[0062] On the other hand, when it is determined in step ST104 that the vehicle 1 is not traveling in a straight line (step ST104 "No"), the control section 11 determines whether the vehicle 1 is in a curve traveling state (step ST109). The control section 11 can determine that the vehicle 1 is "in a curve traveling state" when it is determined based on the signal generated by the speed detection section 22 that the vehicle 1 is traveling, that is, when it is determined based on the signal generated by the inclination detection section 23 that the vehicle 1 is continuously inclined in the same direction (positive direction or negative direction) for a prescribed time. Alternatively, the control section 11 can determine that the vehicle 1 is "in a curve traveling state" when the signal generated by the inclination detection section 23 exceeds a threshold value (stored in the prescribed area of the storage section 12) of the inclination of the vehicle 1 set in advance in accordance with the speed of the vehicle 1.

[0063] When it is determined that the vehicle 1 is in a curve traveling state (step ST109 "Yes"), the control section 11 turns off the illumination flag assigned and stored in the prescribed area of the storage section 12 (step ST110), and performs control so that no warning is issued (step ST111). In this way, when it is determined that the vehicle 1 is traveling on a curve, by controlling so that the illumination of the light source 13 is not performed, it is possible to suppress the issuance of a warning in a situation in which the occupant is focused on the control of the vehicle 1 while traveling on a curve, and as a result, it is possible to reduce the possibility that the safe driving is hindered by unnecessary attention due to the warning.

[0064] ​Further, for example, in a case where a two-wheeled vehicle is applied as the vehicle 1, a balance-keeping determination in straight traveling that slightly shakes the vehicle body to the left and right is not determined as "in curve traveling", and a more correct "curve traveling determination" can be performed compared to a conventional method that determines as "in curve traveling" in a case where the inclination angle or the lateral G is a fixed value or more. Further, the control section 11 can be controlled so that the light source is not lit in a case where the signal generated by the inclination detection section 23 exceeds a threshold value of the vehicle inclination that is set in advance according to the speed of the vehicle 1. In this case, for example, in a scenario where a U-turn is made at an extremely low speed in a two-wheeled vehicle or a scenario where a curve is passed in drift traveling, it is assumed that a warning is given in a state where the vehicle body is substantially upright, and thus, by setting the threshold value of the inclination according to the speed, it is possible to suppress a warning from being given in such a scenario, and as a result, it is possible to reduce the possibility that safe driving is hindered by unnecessary attention due to the warning.

[0065] Further, by reflecting the radius of curvature of the curve in the setting of the threshold value of the inclination of the vehicle 1, for example, by weighting the threshold value that is set in advance based on the radius of curvature, the control section 11 can perform a more correct determination of "in curve traveling". Further, the radius of curvature of the curve can be calculated by operation according to the positional information of the vehicle and the map information, or using a relationship that matches the gravitational force Mg (refer to Figure 1 B ) and the centrifugal force Y (refer to Figure 1 B ) that act on the vehicle 1 in curve traveling.

[0066] Further, in a case where it is determined that the vehicle 1 is not in curve traveling in step ST109 (step ST109 "No"), the control section 11 performs control to turn the lighting flag that is allocated and stored in the prescribed region of the storage section 12 to ON (step ST107), and to light the light source 13 to give a warning (step ST108).

[0067] In this way, the control section 11 acquires the signals output from the surrounding detection section 21, the speed detection section 22, and the inclination detection section 23 from the ECU 20, and in a case where it is determined that the vehicle 1 is in traveling and the vehicle 1 is in curve traveling, it is determined that a warning related to an obstacle in the surroundings is not needed, and in a case where it is determined that the vehicle 1 is in traveling and the vehicle 1 is not in curve traveling or the vehicle 1 is in straight traveling, and it is determined that there is an obstacle in the surroundings that requires a warning, control is performed to light (including blink) or change the light color or the lighting interval of the light source 13 according to the content of the warning. Therefore, the occupant can be aware of the presence or approach of the obstacle through the warning, and on the other hand, it is possible to reduce the possibility that safe driving is hindered by unnecessary attention due to the warning in a scenario where the driver is focused on driving in curve traveling or the like. Further, Figure 4The flowchart shown does not limit the present application to the order of processing shown in the flowchart, and addition, deletion, or reordering of steps can be made without departing from the gist and technical concept of the present application.

[0068] [Effects of Embodiments]

[0069] As described above, the display control device of the present embodiment is, for example, the vehicle warning system 100, like Figure 2 As shown, the vehicle warning system 100 is provided with: a surrounding detection section 21 that detects the surroundings of the vehicle 1; a speed detection section 22 that detects the speed of the vehicle 1; a tilt detection section 23 that detects the tilt of the vehicle 1; a light source 13 that emits display light L of warning information (refer to Figure 3 ); a control section 11 that, in a case where a passenger (refer to Figure 3 ) of the vehicle 1 is warned based on a signal generated by the surrounding detection section 21, turns on the light source 13 or changes the emission color of the light source 13, the control section 11 controls in such a manner that, in a case where it is determined that the vehicle 1 is running on a curve based on signals generated by the speed detection section 22 and the tilt detection section 23, the turning on of the light source 13 is not performed.

[0070] According to the vehicle warning system 100 of the present embodiment, for example, in a case where there is a preceding vehicle or a following vehicle approaching, the passenger (mainly the driver 18) is able to know the presence or approach of an obstacle by any one of turning on or flickering the light source 13, etc., in such a manner that the color tone (emission color) in this case is determined in advance (for example, the presence of a preceding vehicle is yellow, and the approach of a following vehicle is red), on the other hand, in a case where it is determined that the vehicle 1 is running on a curve, the turning on of the light source 13 is not performed, and thus, it is possible to suppress the situation where the passenger is alerted in a scene where the passenger is focused on the control of the vehicle 1 while running on a curve, and as a result, it is possible to reduce the possibility that safe driving is hindered by unnecessary attention due to the alert.

[0071] In addition, according to the vehicle warning system 100 of the present embodiment, the control section 11 controls in such a manner that, in a case where it is determined that the vehicle 1 is running based on a signal generated by the speed detection section 22, and it is determined that the vehicle 1 is continuously tilted in the same direction for a prescribed time based on a signal generated by the tilt detection section 23, the turning on of the light source 13 is not performed, and thus, for example, in a case where a two-wheeled vehicle is applied as the vehicle 1, in a case where the passenger falls off the vehicle 1 while running on a curve, it is not determined to be "running on a curve", and in addition, it is not determined that the balance while running on a straight line is "running on a curve", and thus, for example, compared to the existing method where it is determined to be "running on a curve" in a case where the tilt angle or the lateral G is a fixed value or more, it is possible to make a more correct determination of "running on a curve".

[0072] Furthermore, according to the vehicle warning system 100 of this embodiment, the control unit 11 controls the system in such a way that if the signal generated by the tilt detection unit 23 exceeds the tilt threshold of the vehicle 1 set in advance according to the speed of the vehicle 1, the light source 13 is not turned on. Therefore, for example, in a scenario where a two-wheeled vehicle is making a U-turn at a very low speed or when passing through a curve while drifting, it is conceivable to issue a warning when the vehicle body is in a roughly upright state. Therefore, by setting the tilt threshold according to the speed, it is possible to suppress the issuance of warnings in such scenarios. As a result, it is possible to reduce the possibility of unnecessary attention caused by the warnings hindering safe driving.

[0073] Furthermore, according to the vehicle warning system 100 of this embodiment, the control unit 11 can make a more accurate determination of "driving on a curve" by reflecting the radius of curvature of the curve in the setting of the vehicle tilt threshold, for example, by weighting a preset threshold based on the radius of curvature. In addition, the radius of curvature of the curve can be obtained by calculation based on the vehicle's position information and map information, or by using the relationship between the gravity Mg and centrifugal force Y applied to the vehicle while driving on the curve.

[0074] The vehicle instrument device 10 of this embodiment, for example, is... Figure 3 As shown, the system includes a light source 13 and a control unit (control board 11'). The light source 13 emits a warning light L, and the control unit (control board 11') acquires status information related to the vehicle 1 from the outside. Based on the acquired status information, it determines whether to warn the occupant 18 of the vehicle 1, and illuminates the light source 13 or changes the emission color of the light source 13 to issue a warning. The control unit (control board 11') controls the system in the following manner: when the light source 13 is illuminated, the display light L emitted from the light source 13 passes through the upper space of the housing component 15 towards the light-transmitting component (light-transmitting resin glass 14) provided on the vehicle 1, so that the occupant 18 of the vehicle 1 can visually recognize the virtual image 17 generated by the reflection of the windshield 16; and based on the speed detection unit (see Figure 1 or ...) mounted on the vehicle 1... Figure 2 22) and tilt detection unit (see Figure 1 or Figure 2 The signal obtained in step 23) indicates that the vehicle 1 is driving on a curve, and therefore the light source 13 is not turned on.

[0075] According to the vehicle instrument device 10 of the present embodiment, the control section (control section 11 mounted on the control substrate 11') controls in such a manner that the display light L emitted from the light source 13 when the light source 13 is lit is transmitted toward the light-transmitting section (light-transmitting resin glass 14) provided on the vehicle 1 in a manner to cover the upper space of the housing section 15, the passenger 18 who rides the vehicle 1 visually recognizes the virtual image 17 generated by being reflected by the windshield 16, and in the case where it is determined based on the signals acquired from the speed detecting section 22 and the inclination detecting section 23 mounted on the vehicle 1 that the vehicle 1 is running on a curve, the light source 13 is not lit. Thus, it is possible to provide a vehicle instrument device 10 which, for example, controls in such a manner that in the case where there is an approaching front vehicle or rear vehicle, the color tone (emission color) in that case is determined in advance (for example, the presence of a front vehicle is yellow and the approach of a rear vehicle is red) by any one of the light source 13 being lit or flashing, and the like, so that the passenger 18 (mainly the driver) can be aware of the presence or approach of an obstacle, and the like, and on the other hand, in the case where it is determined that the vehicle 1 is running on a curve, the light source 13 is not lit, so that the warning in the scenario where the passenger 18 focuses on the control of the vehicle 1 while running on a curve is suppressed, and as a result, it is possible to reduce the possibility that safe driving is hindered by unnecessary attention due to the warning.

[0076] The program of the present embodiment is a program of the vehicle instrument device 10, and for example, as shown in Figure 3 the vehicle instrument device 10 has the light source 13 which emits the display light L of the warning information, and the control section (control substrate 11') which acquires the state information related to the vehicle 1 from the outside, determines whether or not to warn the passenger 18 who rides the vehicle 1 based on the acquired state information, and warns by lighting the light source 13 or changing the emission color of the light source 13. Also, in this program, the processor possessed by the control section 11 performs the following processing: for example, as shown in Figure 4 acquires the surrounding information of the vehicle 1 (step ST105); acquires the speed information of the vehicle 1 (step ST102); acquires the inclination information of the vehicle 1 (step ST103); and in the case where it is determined based on the state information related to the vehicle 1 including the acquired speed of the vehicle 1 and the inclination of the vehicle 1 that the vehicle 1 is running on a curve, controls so as not to light the light source 13 (steps ST109 to ST111).

[0077] According to the program of the present embodiment, the processor of the control section 11 (control substrate 11') performs the following processing: reads out the program stored in the storage section 12, and in a case where it is determined, based on the state information related to the vehicle 1 including the speed of the vehicle 1 and the inclination of the vehicle 1 acquired from the outside, that the vehicle 1 is traveling on a curve, controls so as not to perform the lighting of the light source 13, for example, and controls in such a manner that in a case where there is a preceding vehicle or a following vehicle is approaching, the color tone in that case is determined in advance (for example, the presence of the preceding vehicle 1 is yellow, and the approach of the following vehicle is red) by any one of the lighting or the flashing light emission, or the like of the light source 13, so that the occupant (mainly the driver) can know the presence or the approach of the obstacle, and on the other hand, in a case where it is determined that the vehicle 1 is traveling on a curve, the lighting of the light source 13 is not performed, so that the warning in the scene where the occupant 18 focuses on the control of the vehicle 1 in traveling on a curve is suppressed, and as a result, the possibility that the safe driving is hindered by the unnecessary attention due to the warning can be reduced.

[0078] The present application is not limited to the above-described exemplary embodiments, and the above-described exemplary embodiments can be easily modified within the scope contained in the claims by those skilled in the art.

Claims

1. A warning system for a vehicle, characterized by comprising: Possess: a surrounding detection section that detects surrounding information of a vehicle; a speed detection section that detects a speed of the vehicle; a tilt detection section that detects a tilt of the vehicle; a light source that emits display light of warning information; and a control section that, in a case where a passenger who gets on the vehicle is warned based on a signal generated by the surrounding detection section, lights up the light source or changes a light emission color of the light source, the control section controls in such a manner that: in a case where it is determined, based on signals generated by the speed detection section and the tilt detection section, that the vehicle is traveling on a curve, the lighting up of the light source is not performed.

2. The warning system for a vehicle according to claim 1, wherein the control section controls in such a manner that: in a case where it is determined, based on a signal generated by the speed detection section, that the vehicle is in a traveling state, and based on a signal generated by the tilt detection section, that the vehicle is continuously tilted in the same direction for a prescribed time, the lighting up of the light source is not performed.

3. The warning system for a vehicle according to claim 1, wherein the control section controls in such a manner that: in a case where a signal generated by the tilt detection section exceeds a threshold value of the tilt of the vehicle that is set in advance in accordance with the speed of the vehicle, the lighting up of the light source is not performed.

4. The warning system for a vehicle according to claim 3, wherein the control section reflects a radius of curvature of the curve acquired from the outside in the setting of the threshold value of the tilt of the vehicle.

5. An instrument device for a vehicle, in which a light source that emits display light of warning information and a control section that acquires, from the outside, state information related to a vehicle, determines whether or not to warn a passenger who gets on the vehicle based on the acquired state information, and performs the warning by lighting up the light source or changing a light emission color of the light source are provided on a housing member, the instrument device for a vehicle is characterized in that the control section controls in such a manner that: the display light emitted from the light source when the light source is lit up is made to be transmitted toward a light-transmitting member provided on the vehicle in such a manner as to cover an upper space of the housing member, and a passenger who gets on the vehicle visually recognizes a virtual image generated by reflection on a windshield; and in a case where it is determined, based on signals acquired from a speed detection section and a tilt detection section mounted on the vehicle, that the vehicle is traveling on a curve, the lighting up of the light source is not performed.

6. A program that is a program of an instrument device for a vehicle, the instrument device for a vehicle possessing a light source that emits display light of warning information and a control section that acquires, from the outside, state information related to a vehicle, determines whether or not to warn a passenger who gets on the vehicle based on the acquired state information, and performs the warning by lighting up the light source or changing a light emission color of the light source, in the program, a processor possessed by the control section is caused to perform the following processing: acquiring surrounding information of the vehicle; acquiring speed information of the vehicle; acquiring tilt information of the vehicle; and ​ In a case where it is determined that the vehicle is running on a curve on the basis of the state information related to the vehicle including the acquired speed information of the vehicle and the inclination information of the vehicle, the light source is not illuminated.

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