KR20230174481A - Control method of lighting apparatus for vehicle - Google Patents

Abstract

The present invention relates to a control method for a vehicle lighting device, comprising: a sensor unit detecting a driving state of a vehicle and a moving object around the vehicle; and a control unit based on the detected driving state of the vehicle and location information of the moving object. When it is determined that there is a possibility of collision between the vehicle and the moving object, the control unit operates the driving unit, lighting unit, and speaker unit to output lighting signals and sound signals toward the moving object. It is characterized by including the step of:

Description

Control method of vehicle lighting device {CONTROL METHOD OF LIGHTING APPARATUS FOR VEHICLE}

The present invention relates to a method of controlling a vehicle lighting device, and more specifically, to a method of controlling a vehicle lighting device that can transmit signals to surrounding vehicles, drivers, or pedestrians.

In general, various types of lighting devices are installed in vehicles to easily identify objects located around the vehicle while driving and to inform surrounding vehicles, pedestrians, etc. of the vehicle's status or transmit signals.

However, since conventional lighting devices transmit signals only by turning on and off LEDs, there are limits to the types of signals that can be transmitted, and they can only transmit somewhat flat images, making it difficult to transmit clear signals. Additionally, in the case of daytime situations where the illuminance value outside the vehicle is high, signal transmission only by turning on and off the LEDs has the problem of poor visibility.

The background technology of the present invention is disclosed in Republic of Korea Patent Publication No. 10-1789652 (registered on October 18, 2017, title of invention: LED lighting lamp for vehicles).

The purpose of the present invention is to provide a control method for a vehicle lighting device that can transmit sound signals as well as lighting signals by light.

In order to solve the above-described problem, a method of controlling a vehicle lighting device according to the present invention includes: a sensor unit detecting a driving state of a vehicle and moving objects around the vehicle; A control unit determining a possibility of collision between the vehicle and the moving object based on the detected driving state of the vehicle and location information of the moving object; And when it is determined that there is a possibility of collision between the vehicle and the moving object, the control unit operates a driving unit, a lighting unit, and a speaker unit to output a lighting signal and a sound signal toward the moving object.

In addition, the lighting unit includes: a first lighting unit rotatably installed on the first body, coupled to a second body that rotates in conjunction with the driving force of the driving unit, and irradiating an optical image toward the road surface; and a second lighting unit coupled to the second body and displaying a color set to the exterior of the vehicle under control of the control unit.

In addition, outputting a lighting signal and an audio signal toward the moving object may include calculating a rotation angle of the second body based on location information of the detected moving object by the control unit; causing the control unit to operate the drive unit to rotate the second body at a calculated rotation angle; The control unit operates the first lighting unit to project an optical image onto the road surface where the moving object is located; and a step of the control unit operating the speaker unit to output an audio signal toward the moving object.

In addition, in the step of detecting the driving state of the vehicle and moving objects around the vehicle, if the control unit determines that the vehicle is autonomously driving, the control unit operates the second lighting unit to illuminate the first color to the outside of the vehicle. Displays .

In addition, the step of outputting a lighting signal and a sound signal toward the moving object further includes the step of the control unit operating the second lighting unit to display a second color toward the moving object.

In addition, the sensor unit detects a change in the position of the moving object; and determining, by the control unit, whether avoidance of the moving object has been completed based on the changed location information of the moving object.

In addition, when it is determined that avoidance of the moving object is not completed, the control unit corrects the rotation angle of the second body calculated based on the changed location information of the moving object; and rotating the second body at a corrected rotation angle by the control unit operating the driving unit.

The control method of a vehicle lighting device according to the present invention enables efficient communication with surrounding vehicles, drivers, pedestrians, animals, etc. by combining lighting signals from a lighting unit and sound signals from a speaker unit.

In addition, the method of controlling a lighting device for a vehicle according to the present invention enables continuous communication with a moving object because the irradiation direction and output direction of the lighting unit and the speaker unit can be actively varied by rotation of the second body.

FIG. 1 is a diagram schematically showing the installation state of a vehicle lighting device according to an embodiment of the present invention, and FIG. 2 is a perspective view schematically showing the configuration of a vehicle lighting device according to an embodiment of the present invention.
Figure 3 is a front view schematically showing the configuration of a vehicle lighting device according to an embodiment of the present invention.
Figure 4 is a perspective view schematically showing the internal configuration of a vehicle lighting device according to an embodiment of the present invention.
Figure 5 is a block diagram schematically showing the configuration of a vehicle lighting device according to an embodiment of the present invention.
Figure 6 is an enlarged view schematically showing the configuration of a first lighting unit according to an embodiment of the present invention.
Figure 7 is an enlarged view schematically showing the configuration of a speaker unit according to an embodiment of the present invention.
Figure 8 is a flowchart schematically showing the operation sequence in which a vehicle lighting device performs a welcome mode and a parking location notification mode according to an embodiment of the present invention.
Figure 9 is a flowchart schematically showing the sequence of step S130 according to an embodiment of the present invention.
Figure 10 is a diagram schematically showing the operating state of a vehicle lighting device in step S130 according to an embodiment of the present invention.
Figure 11 is a flow chart schematically showing the sequence of step S140 according to an embodiment of the present invention.
Figure 12 is a diagram schematically showing the operating state of a vehicle lighting device in step S140 according to an embodiment of the present invention.
Figure 13 is a flowchart schematically showing the operation sequence in which a vehicle lighting device performs a hazard warning mode according to an embodiment of the present invention.
Figure 14 is a flow chart schematically showing the sequence of step S220 according to an embodiment of the present invention.
Figure 15 is a diagram schematically showing the operating state in step S220 of the vehicle lighting device according to an embodiment of the present invention.
Figure 16 is a flowchart schematically showing the operation sequence in which a vehicle lighting device performs a collision avoidance mode according to an embodiment of the present invention.
Figure 17 is a diagram schematically showing the operating state in step S320 of the vehicle lighting device according to an embodiment of the present invention.
Figure 18 is a flowchart schematically showing the operation sequence in which a vehicle lighting device performs a walking guidance mode according to an embodiment of the present invention.
Figures 19 and 20 are diagrams showing optical images that the first lighting unit emits onto the road surface in step S433 according to an embodiment of the present invention.

Hereinafter, an embodiment of a vehicle lighting device according to the present invention will be described with reference to the attached drawings.

In this process, the thickness of lines or sizes of components shown in the drawing may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

In addition, in this specification, when a part is said to be "connected (or connected)" to another part, this does not only mean that it is "directly connected (or connected)" but also "connected (or connected)" with another member in between. Also includes cases where there is an “indirect connection (or connection).” In this specification, when a part is said to “include (or include)” a certain component, this does not exclude other components, unless specifically stated to the contrary, but rather “includes (or includes)” other components. It means you can do it.

Additionally, the same reference numerals may refer to the same components throughout this specification. Even if the same or similar reference signs are not mentioned or explained in a particular drawing, the numbers may be explained based on other drawings. Additionally, even if there are parts that are not indicated by reference signs in a specific drawing, those parts can be explained based on other drawings. In addition, the number, shape, size, and relative differences in size of detailed components included in the drawings of the present application are set for convenience of understanding, do not limit the embodiments, and may be implemented in various forms.

Figure 1 is a diagram schematically showing the installation state of a vehicle lighting device according to an embodiment of the present invention, Figure 2 is a perspective view schematically showing the configuration of a vehicle lighting device according to an embodiment of the present invention, and Figure 3 is It is a front view schematically showing the configuration of a vehicle lighting device according to an embodiment of the present invention, Figure 4 is a perspective view schematically showing the internal configuration of a vehicle lighting device according to an embodiment of the present invention, and Figure 5 is a schematic view of the internal configuration of a vehicle lighting device according to an embodiment of the present invention. This is a block diagram schematically showing the configuration of a vehicle lighting device according to an embodiment.

Referring to Figures 1 to 4, a vehicle lighting device 1 according to an embodiment of the present invention includes a first body 100, a second body 200, a driving unit 300, a lighting unit 400, It includes a speaker unit 500, a sensor unit 600, and a control unit 700.

The first body 100 is mounted on the vehicle body 10 and supports the second body 200, which will be described later. The first body 100 according to an embodiment of the present invention may be formed to have the shape of a cylinder with one side open and an empty interior. The first body 100 may be integrally coupled to the vehicle body 10 by welding or the like, and may also be detachably coupled to the vehicle body 10 by bolting or the like. The first body 100 is arranged so that the open side faces the outside of the vehicle body 10. In Figure 1, the first body 100 is shown as an example of being mounted on the front of the vehicle body 10, but the first body 100 is not limited to this position, and is mounted on the rear of the vehicle body 10, the vehicle body ( 10) It is also possible to be mounted on the side.

The second body 200 is rotatably installed on the first body 100. The second body 200 according to an embodiment of the present invention may be formed to have a cylindrical shape with an empty interior. The second body 200 is disposed inside the first body 100, and both upper and lower ends are rotatably connected to the first body 100. In this case, the second body 200 may be rotatably supported by the first body 100 about an axis in a direction perpendicular to the ground.

The second body 200 includes a grill portion 210 that transmits a lighting signal emitted from a lighting unit 400, which will be described later, and an audio signal output from a speaker unit 500, which will be described later, to the outside of the second body 200. can be formed. The grill portion 210 according to an embodiment of the present invention may be formed to have a plurality of pattern holes formed penetrating the second body 200 arranged in a lattice shape. The grill portion 210 is formed along the lower peripheral surface of the second body 200 and is disposed to face the external space of the vehicle body 10. The plurality of pattern holes forming the grill portion 210 can be designed into various shapes such as triangle, circle, and oval in addition to the square shape shown in FIG. 2.

The driving unit 300 generates driving force to rotate the second body 200. The drive unit 300 according to an embodiment of the present invention may be exemplified as a step motor that receives power from the outside and generates rotational force. The driving unit 300 may receive power from a vehicle battery, etc. The drive unit 300 is coupled to and supported on the lower side of the first body 100. In this case, the drive unit 300 can be integrally coupled to the first body 100 by welding, etc., and can also be detachably coupled to the first body 100 by bolting, etc. The output shaft of the drive unit 300 is connected to the second body 200. Accordingly, the drive unit 300 can rotate the second body 200 relative to the first body 100 by transmitting rotational force to the second body 200 through the output shaft. In this case, the output shaft of the drive unit 300 may be directly connected to the second body 200, and may also be indirectly connected to the second body 200 through a separate reducer. The output shaft of the drive unit 300 is arranged in a direction parallel to the central axis of the second body 200, that is, in a direction perpendicular to the ground. The driving unit 300 is electrically connected to a control unit 700, which will be described later, and whether or not driving force is generated and the direction of the driving force can be controlled by the control unit 700.

The lighting unit 400 rotates together with the second body 200 and emits a lighting signal to the outside of the vehicle.

The lighting unit 400 according to an embodiment of the present invention includes a first lighting unit 410, a second lighting unit 420, and a third lighting unit 430.

The first lighting unit 410 is coupled to the second body 200 and projects an optical image toward the road surface.

Figure 6 is an enlarged view schematically showing the configuration of a first lighting unit according to an embodiment of the present invention.

1 to 6, the first lighting unit 410 according to an embodiment of the present invention may be exemplified by a projection device that projects an image printed on film, etc., or a beam projector that projects a recorded digital image. there is. The first lighting unit 410 is disposed inside the second body 200 and above the second lighting unit 420 and the speaker unit 500, which will be described later. The first lighting unit 410 may be integrally coupled to the second body 200 by welding or the like, and may also be detachably coupled to the second body 200 by bolting or the like. When the second body 200 rotates, the first lighting unit 410 is rotated at the same angular speed and angle as the second body 200. The first lighting unit 410 is disposed inclined at a predetermined angle toward the lower side of the second body 200. That is, the first lighting unit 410 is disposed so that the central axis of the lens that irradiates the optical image is inclined downward by a predetermined angle θ1 with respect to the direction parallel to the ground. Accordingly, the first lighting unit 410 can guide the optical image projected to the outside of the vehicle to be displayed on the road surface. As shown in FIG. 3, the first lighting unit 410 is arranged so that the central axis of the lens that emits the optical image passes through the center line that symmetrically divides the grill portion 210.

The image illuminated by the first lighting unit 410 may be composed of a symbol such as an arrow image, a picture such as a crosswalk image, letters such as “HELLO”, patterns such as a logo or emblem, or a combination thereof. Accordingly, the first lighting unit 410 may be used to guide and instruct pedestrians to walk through the irradiated image, and may also be used for a welcome function where the vehicle appears to welcome the driver when the driver approaches the vehicle. It can be used to provide aesthetics. The first lighting unit 410 is electrically connected to a control unit 700, which will be described later, and its operating state can be controlled by the control unit 700. The first lighting unit 410 can change the plurality of optical images projected onto the road surface under the control of the control unit 700.

The second lighting unit 420 is coupled to the second body 200 and irradiates colored light to the exterior of the vehicle. The second lighting unit 420 is equipped to display a plurality of colors. The second lighting unit 420 is electrically connected to the control unit 700, which will be described later, and displays a color set to the exterior of the vehicle under the control of the control unit 700. The second lighting unit 420 according to an embodiment of the present invention may be exemplified by RGB (Red Green Blue) LED (Light-Emitting Diode) lighting that can display a plurality of colors. The second lighting unit 420 is arranged to be located below the first lighting unit 410 inside the second body 200. The second lighting unit 420 may be integrally coupled to the second body 200 by welding or the like, and may also be detachably coupled to the second body 200 by bolting or the like. The second lighting unit 420 is rotated at the same angular speed and angle as the second body 200 when the second body 200 rotates. The second lighting unit 420 is formed to extend in a longitudinal direction perpendicular to the ground. The second lighting unit 420 is arranged so that its light-emitting surface faces the center line that symmetrically divides the grill portion 210.

The second lighting unit 420 can display the first color, second color, and third color on the outside of the vehicle under the control of the control unit 700. Here, the first to third colors may be exemplified as green, blue, and red, respectively, but are not limited to these matters, and various design changes are possible within the range of colors that can be distinguished from each other.

More specifically, when the control unit 700 determines that the vehicle is currently in an autonomous driving state, the second lighting unit 420 can display the first color on the outside of the vehicle under the control of the control unit 700. there is. Accordingly, the second lighting unit 420 can easily enable pedestrians outside the vehicle and drivers riding in other vehicles to recognize that the vehicle is currently in an autonomous driving state.

In addition, when the second lighting unit 420 determines that the sensor unit 600 correctly recognizes objects such as drivers and pedestrians around the vehicle by the control unit 700 and is in a state of tracking the objects, The second color can be displayed on the outside of the vehicle by control of the control unit 700. Accordingly, the second lighting unit 420 can provide psychological stability to objects such as drivers and pedestrians outside the vehicle by indicating to objects such as drivers and pedestrians outside the vehicle that the vehicle is clearly recognizing the vehicle. .

In addition, when the control unit 700 determines that the vehicle is currently in a dangerous situation such as damage, theft, or intrusion, the second lighting unit 420 displays a third color to the outside of the vehicle under the control of the control unit 700. It can be displayed. Accordingly, the second lighting unit 420 alerts the object that caused the vehicle's dangerous situation by indicating that the vehicle is currently aware of the dangerous situation, and helps the dangerous situation to be resolved. It can be induced.

The third lighting unit 430 is coupled to the first body 100 and forms a beam pattern such as low beam, high beam, etc. to the outside of the vehicle. The third lighting unit 430 according to an embodiment of the present invention may be exemplified as a headlamp of an existing vehicle that is configured to include a light source, a reflector, a lens, etc. and illuminates the vehicle's path. The third lighting unit 430 may be disposed inside the first body 100 and above the second body 200. The third lighting unit 430 may be integrally coupled to the first body 100 by welding or the like, and may also be detachably coupled to the first body 100 by bolting or the like. The third lighting unit 430 is electrically connected to the control unit 700, and the lighting state and lighting mode can be controlled by the control unit 700.

The speaker unit 500 rotates together with the second body 200 and outputs an acoustic signal to the outside of the vehicle.

Figure 7 is an enlarged view schematically showing the configuration of a speaker unit according to an embodiment of the present invention.

Referring to FIGS. 1 to 7 , the speaker unit 500 according to an embodiment of the present invention may be a directional speaker that outputs sound signals in a specific direction or at a constant angle around a specific direction. Accordingly, the speaker unit 500 can improve recognition efficiency and prevent the generation of noise by directing the sound to be concentrated and output to the object to which the sound signal is to be transmitted. The speaker unit 500 may be arranged to be located below the first lighting unit 410 inside the second body 200. At the same time, the speaker unit 500 may be arranged to be located below the second lighting unit 420 inside the second body 200. The speaker unit 500 may be integrally coupled to the second body 200 by welding or the like, and may also be detachably coupled to the second body 200 by bolting or the like. The speaker unit 500 is disposed inclined at a predetermined angle toward the upper side of the second body 200. That is, the speaker unit 500 is arranged so that the transmission direction of the sound signal is inclined upward by a predetermined angle θ2 with respect to the direction horizontal to the ground. Accordingly, the speaker unit 500 can improve the transmission efficiency of sound signals to drivers and pedestrians who perceive sound at a relatively higher position than the vehicle body 10.

The sensor unit 600 detects the status of the vehicle and information around the vehicle. That is, the sensor unit 600 functions as a component that collects various information for the operation of the control unit 700, which will be described later.

The sensor unit 600 according to an embodiment of the present invention includes a driving detection sensor 610, an object detection sensor 620, a distance detection sensor 630, and a danger detection sensor 640.

Hereinafter, it will be described as an example that the sensor unit 600 includes the driving detection sensor 610, the object detection sensor 620, the distance detection sensor 630, and the danger detection sensor 640. However, the sensor unit 600 is not limited to this, and may be composed of any one, a combination of two, or a combination of three of the driving detection sensor 610, the object detection sensor 620, the distance detection sensor 630, and the hazard detection sensor 640. do.

The driving detection sensor 610 detects the driving state of the vehicle. For example, the driving detection sensor 610 detects the driving direction of the vehicle, the driving speed of the vehicle, whether the vehicle is running or stopped, and the driving mode of the vehicle. The driving detection sensor 610 converts the detected driving state of the vehicle into an electrical signal and transmits it to the control unit 700, which will be described later. The driving detection sensor 610 may be installed in the first body 100 or the second body 200, or alternatively, it may be installed in various positions of the vehicle body 10. The driving sensor 610 according to an embodiment of the present invention includes a speed sensor, an inclination sensor, a weight sensor, a gyro sensor, a global positioning sensor (GPS), a geomagnetic sensor, and a current and voltage sensor that detects a vehicle's driving mode signal. It can include at least one of them. In addition, even if a sensor not mentioned above is an element that can additionally obtain driving information of the vehicle, it would be natural to include it in the driving detection sensor 610.

The object detection sensor 620 detects objects around the vehicle. Here, objects may be exemplified to include not only movable objects such as drivers, pedestrians, and animals, but also objects and structures around the vehicle.

The object detection sensor 620 according to an embodiment of the present invention includes a lidar sensor 621 and a camera module 622.

The LiDAR sensor 621 uses laser light to acquire three-dimensional images around the vehicle. The lidar sensor 621 can detect location information, distance information, direction information, speed information, etc. of objects around the vehicle through the acquired image. The lidar sensor 621 may be implemented in a time of flight (TOF) method or a phase-shift method. The lidar sensor 621 may be installed in the first body 100. More specifically, the lidar sensor 621 may be arranged to be located above the third lighting unit 430 inside the first body 100. The lidar sensor 621 may be formed in plural numbers. The plurality of lidar sensors 621 may be arranged to be spaced apart from each other along the circumferential direction of the first body 100. Accordingly, the lidar sensor 621 can further expand the recognition range of objects around the vehicle. The LiDAR sensor 621 can detect location information, distance information, direction information, speed information, etc. with an object. can be obtained

The camera module 622 captures images around the vehicle. The camera module 622 can detect location information, distance information, direction information, speed information, etc. of objects around the vehicle through the acquired image. The camera module 622 may be at least one of a mono camera, a stereo camera, and an Around View Monitoring (AVM) camera. The camera module 622 may be rotated together with the second body 200. More specifically, the camera module 622 is disposed inside the second body 200 and above the first lighting unit 410. The camera module 622 may be integrally coupled to the second body 200 by welding, etc., and may also be detachably coupled to the second body 200 by bolting, etc.

In addition, even if a sensor not mentioned above is an element that can additionally obtain object information around the vehicle, it would be natural to include it in the object detection sensor 620.

The distance sensor 630 detects the distance between the vehicle and the driver's terminal. The driver terminal is an information and communication terminal carried by the driver and may be at least one of a smartphone, a wearable terminal, a laptop, or a tablet PC capable of wireless communication. The distance sensor 630 includes a Global Positioning System (GPS), an infrared sensor, an antenna, etc., and can detect the relative orientation and relative distance of the driver's terminal to the vehicle. The distance detection sensor 630 measures the strength of a wireless signal received from the driver terminal to the control unit 700, which will be described later, and can detect the distance between the vehicle and the driver terminal based on the measured strength of the wireless signal. In addition, the distance detection sensor 630 transmits a distance detection signal to the driver terminal as an input signal is received by the control unit 700, and receives a response signal from the driver terminal to determine the distance between the vehicle and the driver terminal. can be detected. The distance detection sensor 630 may be installed in the first body 100 or the second body 200, or alternatively, it may be installed in various positions of the vehicle body 10. In addition, even if a sensor not mentioned above is an element that can detect the distance between the vehicle and the driver's terminal, it will be natural to include it in the distance detection sensor 630.

The hazard detection sensor 640 detects a dangerous situation in the vehicle. More specifically, the danger sensor 640 detects damage, intrusion, or theft of the vehicle by obtaining information about at least one of an impact applied to the vehicle or whether the door is opened or closed. The danger sensor 640 according to an embodiment of the present invention may include at least one of an impact sensor, an ultrasonic sensor, a tilt sensor, and a door open/close sensor. The hazard detection sensor 640 may be installed on the first body 100 or the second body 200, or alternatively, it may be installed at various locations on the vehicle body 10. In addition, even if a sensor not mentioned above is an element that can detect the distance between the vehicle and the driver's terminal, it will be natural to include it in the hazard detection sensor 640.

The control unit 700 determines an operation mode by receiving information sensed from the sensing unit 600 or an input signal from the driver terminal, and operates the driving unit 300, lighting unit 400, and speaker unit based on the determined operation mode. Controls the overall operation of (500). Additionally, the control unit 700 can control the operation of the vehicle's brake system, etc. The operation mode determined by the control unit 700 may include welcome mode, parking location notification mode, danger warning mode, collision prevention mode, and pedestrian guidance mode. Detailed control operations of the control unit 700 for each mode will be described later.

The control unit 700 according to an embodiment of the present invention is at least one of an electronic control unit (ECU), a central processing unit (CPU), a processor, or a system on chip (SoC). It can be configured to include one, and can control a plurality of hardware or software components by running an operating system or application, and can perform various data processing and calculations. The control unit 700 may be configured to execute at least one command stored in a memory and store execution result data in the memory. The control unit 700 can implement various communication protocols capable of receiving input signals generated from the driver's terminal, such as RF (Radio Frequency), Wi-Fi (Wireless Fidelity), Bluetooth, and Zigbee. , it may be configured to include at least one of a near field communication (NFC) device.

Hereinafter, a method of controlling a vehicle lighting device according to an embodiment of the present invention will be described for each operation mode determined in the control unit 700.

Figure 8 is a flowchart schematically showing the operation sequence in which a vehicle lighting device performs a welcome mode and a parking location notification mode according to an embodiment of the present invention.

Referring to FIG. 8, while the vehicle is parked, the control unit 700 receives an input signal generated from the driver terminal (S100). Here, the input signal may be exemplified by a door opening signal, a starting signal, etc.

Afterwards, the sensing unit 600 detects the distance between the vehicle and the driver terminal (S110). More specifically, in step S110, the detection unit 600 measures the strength of the wireless signal received from the driver terminal to the control unit 700 through the distance detection sensor 630, and based on the strength of the measured wireless signal, the vehicle The distance between the device and the driver's terminal can be detected. In addition, the distance detection sensor 630 transmits a distance detection signal to the driver terminal as an input signal is received by the control unit 700, and receives a response signal from the driver terminal to determine the distance between the vehicle and the driver terminal. can be detected.

The control unit 700 determines whether the distance between the vehicle detected by the detection unit 600 and the driver terminal is less than or equal to the set distance (S120). Here, the set distance can be designed in various ways within the range of a distance that allows the driver to easily visually identify the location of the vehicle.

If the distance between the vehicle and the driver's terminal detected by the detection unit 600 is less than the set distance, the control unit 700 operates the driving unit 300, lighting unit 400, and speaker unit 500 to direct the driver toward the driver. Lighting signals and sound signals are output (S130).

FIG. 9 is a flowchart schematically showing the sequence of step S130 according to an embodiment of the present invention, and FIG. 10 is a diagram schematically showing the operating state of the vehicle lighting device in step S130 according to an embodiment of the present invention.

To describe step S130 in more detail with reference to FIGS. 9 and 10, the detection unit 600 detects the location of the driver who has approached within a set distance (S131). More specifically, in step S131, the detection unit 600 collects information about the location, distance, speed, etc. of the driver located around the vehicle through the lidar sensor 621 and the camera module 622 of the object detection sensor 620. sense

Thereafter, the control unit 700 calculates the rotation angle of the second body 200 based on the driver's location information detected by the sensing unit 600 (S132). More specifically, in step S132, the control unit 700 compares the driver's position detected by the sensing unit 600 with the current lighting irradiation direction of the lighting unit 400 and the sound output direction of the speaker unit 500, and The rotation angle of the second body 200 required until the lighting direction of the unit 400 and the sound output direction of the speaker unit 500 match the driver's position detected by the sensing unit 600 is calculated.

Thereafter, the control unit 700 operates the driving unit 300 to rotate the second body 200 at the calculated rotation angle (S133).

Afterwards, the control unit 700 operates the first lighting unit 410 to project an optical image onto the road surface where the driver is located (S134). The optical image projected onto the road surface by the first lighting unit 410 in step S134 may be various types of shapes, symbols, pictures, letters, or a combination thereof.

Additionally, the control unit 700 operates the speaker unit 500 to output an audio signal to the driver (S135). In step S135, the speaker unit 500 may output an acoustic signal such as “Hi driver’s name,” etc.

Additionally, the control unit 700 operates the second lighting unit 420 to display the second color toward the driver (S136).

Thereafter, the control unit 700 determines whether the driver has boarded the vehicle based on the information detected by the detection unit 600.

When the control unit 700 determines that the driver is in the vehicle, it stops the operation of the driving unit 300, lighting unit 400, and speaker unit 500.

In Figure 9, it is shown as an example that steps S134, S135, and S136 occur sequentially, but steps S134, S135, and S136 are not limited to this and can be performed simultaneously or in a different order. .

Meanwhile, if the distance between the vehicle and the driver terminal detected by the detection unit 600 in step S120 exceeds the set distance, the control unit 700 operates the lighting unit 400 and the speaker unit 500 to Output lighting signals and sound signals to the outside (S140).

FIG. 11 is a flowchart schematically showing the sequence of step S140 according to an embodiment of the present invention, and FIG. 12 is a diagram schematically showing the operating state of the vehicle lighting device at step S140 according to an embodiment of the present invention.

To describe step S140 in more detail with reference to FIGS. 11 and 12, the control unit 700 operates the first lighting unit 410 to project an optical image onto the road surface where the driver is located (S141). The optical image that the first lighting unit 410 irradiates onto the road surface in step S141 may be various types of shapes, symbols, pictures, letters, or a combination thereof. Accordingly, the driver can easily identify the parking location of his or her vehicle through the optical image displayed on the road even in a situation where multiple vehicles are parked in a row.

Additionally, the control unit 700 operates the speaker unit 500 to output an acoustic signal to the outside of the vehicle (S142). In step S142, the speaker unit 500 may output an audio signal such as “Hi driver’s name,” etc. Accordingly, drivers can easily identify the vehicle's parking location through acoustic signals even in situations where multiple vehicles are parked in a row.

Thereafter, when the distance between the vehicle and the driver terminal detected by the sensing unit 600 is less than the set distance, the control unit 700 operates the driving unit 300, the lighting unit 400, and the speaker so that the above-mentioned step S130 is performed. The unit 500 can be operated.

Figure 13 is a flowchart schematically showing the operation sequence in which a vehicle lighting device performs a hazard warning mode according to an embodiment of the present invention.

Referring to FIG. 13, first, the sensor unit 600 detects at least one of an impact applied to the vehicle or an open/closed state of the vehicle door by the hazard detection sensor 640 (S200).

Thereafter, the control unit 700 determines the dangerous situation of the vehicle based on the information detected by the sensor unit 600 (S210). More specifically, in step S210, the control unit 700 first determines whether the vehicle ignition is on or off.

When the vehicle's ignition is off, the control unit 700 determines whether the magnitude of the impact applied to the vehicle exceeds the set magnitude. Here, the size of the impact, which is the judgment standard for the control unit 700, can be designed and changed to various values depending on the impact location of the vehicle, type of vehicle, etc.

Additionally, the control unit 700 determines whether the door of the vehicle has been opened without permission without an input signal from the driver terminal.

Afterwards, if either the size of the impact applied to the vehicle exceeds the set size or whether the vehicle door is opened without permission without an input signal from the driver terminal, the control unit 700 determines whether the vehicle is in a dangerous situation. It is judged that

If it is determined that the vehicle is in a dangerous situation, the control unit 700 operates the driving unit 300, lighting unit 400, and speaker unit 500 to output lighting signals and sound signals to the outside of the vehicle (S220) .

FIG. 14 is a flowchart schematically showing the sequence of step S220 according to an embodiment of the present invention, and FIG. 15 is a diagram schematically showing the operating state of the vehicle lighting device at step S220 according to an embodiment of the present invention.

To describe step S220 in more detail with reference to FIGS. 14 and 15, the detection unit 600 detects the location of a risk-causing object that approaches within a set distance (S221). Here, the risk-causing object is a movable object located closest to the vehicle, for example, a person, a vehicle, etc., among the objects around the vehicle detected by the detection unit 600 at the time the control unit 700 determines a dangerous situation. it means. In step S221, the detection unit 600 detects information about the location, distance, speed, etc. of dangerous objects located around the vehicle through the lidar sensor 621 and the camera module 622 of the object detection sensor 620. .

Thereafter, the control unit 700 calculates the rotation angle of the second body 200 based on the location information of the dangerous object detected by the sensing unit 600 (S222). More specifically, in step S222, the control unit 700 compares the location of the risk-causing object detected by the detection unit 600 with the current illumination direction of the lighting unit 400 and the sound output direction of the speaker unit 500. , Calculate the rotation angle of the second body 200 required until the lighting irradiation direction of the lighting unit 400 and the sound output direction of the speaker unit 500 match the position of the dangerous object detected by the sensing unit 600. do.

Thereafter, the control unit 700 operates the driving unit 300 to rotate the second body 200 at the calculated rotation angle (S223).

Thereafter, the control unit 700 operates the first lighting unit 410 to project an optical image onto the road surface where the hazard-causing object is located (S224). The optical image projected onto the road surface by the first lighting unit 410 in step S224 may be a shape, symbol, picture, text, or a combination thereof that conveys a warning meaning. In step S224, the control unit 700 may operate the first lighting unit 410 so that the optical image emitted from the first lighting unit 410 blinks.

Additionally, the control unit 700 operates the speaker unit 500 to output an acoustic signal toward the outside of the vehicle, more specifically toward a dangerous object (S225). In step S225, the speaker unit 500 may output an acoustic signal such as “Warning” that conveys a warning meaning, for example.

In addition, the control unit 700 operates the second lighting unit 420 to display the third color toward the outside of the vehicle, more specifically toward a hazard-causing object (S226). In step S226, the control unit 700 may operate the second lighting unit 420 so that the second lighting unit 420 blinks and displays a third color.

In Figure 14, it is shown as an example that steps S224, S225, and S226 occur sequentially, but steps S224, S225, and S226 are not limited to this and can be performed simultaneously or in a different order. .

Afterwards, the sensing unit 600 detects a change in the location of the dangerous object.

The control unit 700 determines whether to avoid the dangerous object based on the changed location of the dangerous object detected by the detection unit 600.

When the control unit 700 determines that avoidance of the dangerous object has been completed, it stops the operation of the driving unit 300, lighting unit 400, and speaker unit 500.

FIG. 16 is a flowchart schematically showing the operation sequence in which a vehicle lighting device performs a collision avoidance mode according to an embodiment of the present invention, and FIG. 17 is an operation of the vehicle lighting device according to an embodiment of the present invention in step S320. This is a drawing that schematically shows the state.

Referring to FIGS. 16 and 17, first, the sensor unit 600 detects the driving state of the vehicle and moving objects around the vehicle (S300).

More specifically, in step S300, the sensor unit 600 detects the driving mode of the vehicle using the driving detection sensor 610.

The control unit 700 determines whether the vehicle is autonomously driving based on information detected by the driving detection sensor 610 (S301).

When it is determined that the vehicle is driving autonomously, the control unit 700 operates the second lighting unit 420 to display the first color on the outside of the vehicle (S302). Accordingly, pedestrians outside the vehicle, drivers of other vehicles, etc. can easily recognize that the vehicle is currently in an autonomous driving state.

If it is determined that the vehicle is not autonomously driving, the control unit 700 stops the operation of the second lighting unit 420.

Additionally, in step S300, the sensor unit 600 detects a moving object around the vehicle using the object detection sensor 620. The object detection sensor 620 can detect information about the location, distance, speed, etc. of moving objects located around the vehicle through the lidar sensor 621 and the camera module 622. Here, the moving object is an object that can move around the vehicle and may be exemplified by a pedestrian, an animal, a bicycle rider, etc.

Thereafter, the control unit 700 determines the possibility of a collision between the vehicle and the moving object based on the driving state of the vehicle and the location information of the moving object detected by the sensor unit 600 (S310). More specifically, in step S310, the control unit 700 predicts the vehicle based on the driving direction of the vehicle detected by the driving detection sensor 610, and the location and moving direction of the moving object detected by the object detection sensor 620. Determine whether a moving object is located on the driving path.

In this process, the control unit 700 determines whether the distance between the vehicle and the moving object is less than or equal to the set distance.

If deceleration or braking is not performed by the driver even though the distance between the vehicle and the moving object becomes less than the set distance, the control unit 700 operates the vehicle's brake device to slow down the vehicle or brake the vehicle. You can.

If it is determined in step S310 that there is a possibility of collision between the vehicle and the moving object, the control unit 700 operates the driving unit 300, the lighting unit 400, and the speaker unit 500 to send a lighting signal and an acoustic signal toward the moving object. Output (S320).

More specifically, the control unit 700 calculates the rotation angle of the second body 200 based on the location information of the moving object detected by the sensing unit 600 (S321). More specifically, in step S321, the control unit 700 compares the position of the moving object detected by the sensing unit 600 with the current illumination direction of the lighting unit 400 and the sound output direction of the speaker unit 500, The rotation angle of the second body 200 required until the illumination direction of the lighting unit 400 and the sound output direction of the speaker unit 500 match the position of the moving object detected by the sensing unit 600 is calculated.

Thereafter, the control unit 700 operates the driving unit 300 to rotate the second body 200 at the calculated rotation angle (S322).

Thereafter, the control unit 700 operates the first lighting unit 410 to project an optical image onto the road surface where the moving object is located (S323). The optical image projected onto the road surface by the first lighting unit 410 in step S323 may be a shape, symbol, picture, character, or a combination thereof that conveys a warning meaning. In step S323, the control unit 700 may operate the first lighting unit 410 so that the optical image emitted from the first lighting unit 410 blinks.

Additionally, the control unit 700 operates the speaker unit 500 to output an audio signal toward the moving object (S324). In step S324, the speaker unit 500 may output an acoustic signal such as “Warning” that conveys a warning meaning, for example.

Additionally, the control unit 700 operates the second lighting unit 420 to display the second color toward the outside of the vehicle, more specifically toward the moving object (S325). If the second lighting unit 420 displays the first color in step S325, the control unit 700 changes the color displayed by the second lighting unit 420 from the first color to the second color in step S325. The second lighting unit 420 is operated to switch. Accordingly, moving objects around the vehicle can recognize that the vehicle is currently recognizing them.

In Figure 16, it is shown as an example that steps S323, S324, and S325 occur sequentially, but steps S323, S324, and S325 are not limited to this and can be performed simultaneously or in a different order. .

Afterwards, the sensing unit 600 detects a change in the position of the moving object (S340).

The control unit 700 determines whether avoidance of the moving object has been completed based on the changed location information of the moving object detected by the sensing unit 600 (S350). In step S350, if the control unit 700 determines that the moving object deviates from the vehicle's expected driving path, it may determine that the moving object has been evaded.

If it is determined that avoidance of the moving object has not been completed, the control unit 700 corrects the rotation angle of the second body 200 calculated based on the changed location information of the moving object (S350). Step S350 may be performed by the same method as step S321.

Thereafter, the control unit 700 operates the driving unit 300 to rotate the second body 200 at the corrected rotation angle (S360).

Thereafter, when the control unit 700 determines that avoidance of the moving object has been completed, it stops the operation of the driving unit 300, lighting unit 400, and speaker unit 500.

Figure 18 is a flowchart schematically showing the operation sequence in which a vehicle lighting device performs a walking guidance mode according to an embodiment of the present invention.

Referring to FIG. 18, first, the sensor unit 600 detects a pedestrian located in front of the vehicle while the vehicle is stopped (S400). More specifically, in step S400, the sensor unit 600 detects pedestrians around the vehicle using the object detection sensor 620. The object detection sensor 620 can detect information about the location, distance, speed, etc. of moving objects located around the vehicle through the lidar sensor 621 and the camera module 622.

Afterwards, the control unit 700 receives an input signal generated from the driver terminal (S410). The input signal generated in step S410 is a signal that commands the control unit 700 to perform step S420, which will be described later, and various design changes are possible within the range of signals that are different from the input signal generated in step S100 described above.

Thereafter, the control unit 700 determines the pedestrian's walking path based on the pedestrian's location, movement direction, speed, etc. detected by the sensor unit 600, more specifically the object detection sensor 620 (S420).

After the pedestrian's walking path is determined, the control unit 700 operates the driving unit 300, lighting unit 400, and speaker unit 500 to output lighting signals and sound signals on the pedestrian's walking path ( S430).

More specifically, the control unit 700 calculates the rotation angle of the second body 200 based on the pedestrian's walking path determined in step S420 (S431). More specifically, in step S431, the control unit 700 determines the estimated walking path of the pedestrian, the location of the pedestrian detected by the detection unit 600, the current illumination direction of the lighting unit 400, and the speaker unit 500. The sound output directions are compared, and the rotation angle of the second body 200 required so that the illumination direction of the lighting unit 400 and the sound output direction of the speaker unit 500 face forward in the pedestrian's walking direction is calculated.

Thereafter, the control unit 700 operates the driving unit 300 to rotate the second body 200 at the calculated rotation angle (S432).

Thereafter, the control unit 700 operates the first lighting unit 410 to project an optical image onto the road surface where the pedestrian is located (S433).

Figures 19 and 20 are diagrams showing optical images that the first lighting unit emits onto the road surface in step S433 according to an embodiment of the present invention.

Additionally, referring to FIG. 19, the optical image projected onto the road surface by the first lighting unit 410 in step S433 may be in the shape of a crosswalk. Accordingly, the first lighting unit 410 can provide psychological stability to the pedestrian and enable surrounding vehicles to easily recognize that the pedestrian is currently in a walking state.

Referring to FIG. 20, the optical image projected onto the road surface by the first lighting unit 410 in step S433 may be in the shape of an arrow pointing in the pedestrian's walking direction. Accordingly, the first lighting unit 410 can guide pedestrians in the direction of walking in dark surroundings, such as at night.

In contrast, the optical image projected onto the road surface by the first lighting unit 410 may be a combination of the arrow shape and crosswalk shape shown in FIGS. 19 and 20, and may be a separate symbol other than the arrow shape and crosswalk shape, It could be a shape or a picture.

Additionally, the control unit 700 operates the speaker unit 500 to output an audio signal toward the moving object (S434). In step S434, the speaker unit 500 may output sound signals such as “Left”, “Right”, etc. that instruct the pedestrian in the direction of walking.

Additionally, the control unit 700 operates the second lighting unit 420 to display the second color toward the outside of the vehicle, more specifically toward the moving object (S435). Accordingly, the second lighting unit 420 can provide a sense of psychological stability to pedestrians by allowing them to recognize that the vehicle is currently recognizing them.

In Figure 18, it is shown as an example that steps S433, S434, and S435 occur sequentially, but steps S433, S434, and S435 are not limited to this and can be performed simultaneously or in a different order. .

Afterwards, the detection unit 600 detects a change in the pedestrian's position (S440).

The control unit 700 determines whether the moving object has completed walking based on the changed location information of the pedestrian detected by the detection unit 600 (S450). In step S450, the control unit 700 may determine that the pedestrian has completed walking if it is determined that the pedestrian has deviated from the vehicle's driving path.

If it is determined that the pedestrian's walking has not been completed, the control unit 700 corrects the rotation angle of the second body 200 calculated based on the changed location information of the pedestrian (S460). Step S460 can be performed by the same method as step S431.

Thereafter, the control unit 700 operates the driving unit 300 to rotate the second body 200 at the corrected rotation angle (S470).

Thereafter, when the control unit 700 determines that avoidance of the moving object has been completed, it stops the operation of the driving unit 300, lighting unit 400, and speaker unit 500.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely illustrative, and those skilled in the art will recognize that various modifications and other equivalent embodiments can be made therefrom. You will understand. Therefore, the scope of technical protection of the present invention should be determined by the scope of the patent claims below.

1: Vehicle lighting device 10: Car body
100: first body 200: second body
210: grill part 300: driving unit
400: lighting unit 410: first lighting unit
420: 2nd lighting unit 430: 3rd lighting unit
500: Speaker unit 600: Sensor unit
610: Driving detection sensor 620: Object detection sensor
621: Lidar sensor 622: Camera module
630: Distance detection sensor 640: Hazard detection sensor
700: Control unit

Claims (7)

A sensor unit detecting a driving state of a vehicle and moving objects around the vehicle;
A control unit determining a possibility of collision between the vehicle and the moving object based on the detected driving state of the vehicle and location information of the moving object; and
When it is determined that there is a possibility of collision between the vehicle and the moving object, the control unit operates a driving unit, a lighting unit, and a speaker unit to output a lighting signal and an acoustic signal toward the moving object. A method of controlling a vehicle lighting device.
According to clause 1,
The lighting unit is,
a first lighting unit rotatably installed on the first body, coupled to a second body that rotates in conjunction with the driving force of the driving unit, and irradiating an optical image toward the road surface; and
A second lighting unit coupled to the second body and displaying a color set to the exterior of the vehicle by control of the control unit.
According to clause 2,
The step of outputting a lighting signal and a sound signal toward the moving object,
calculating a rotation angle of the second body based on location information of the detected moving object by the control unit;
causing the control unit to operate the drive unit to rotate the second body at a calculated rotation angle;
The control unit operates the first lighting unit to project an optical image onto the road surface where the moving object is located; and
A method of controlling a lighting device for a vehicle, comprising: the control unit operating the speaker unit to output an acoustic signal toward the moving object.
According to clause 3,
In the step of detecting the driving state of the vehicle and moving objects around the vehicle, if the control unit determines that the vehicle is driving autonomously, the control unit operates the second lighting unit to display the first color on the outside of the vehicle. A lighting device for a vehicle, characterized in that.
According to clause 4,
The step of outputting a lighting signal and a sound signal toward the moving object,
The method of controlling a lighting device for a vehicle further comprising: causing the control unit to operate the second lighting unit to display a second color toward the moving object.
According to clause 3,
detecting, by the sensor unit, a change in position of the moving object; and
The method of controlling a lighting device for a vehicle further comprising: determining whether the control unit has completed avoiding the moving object based on the changed location information of the moving object.
According to clause 6,
When it is determined that avoidance of the moving object is not complete, the control unit corrects the rotation angle of the second body calculated based on the changed location information of the moving object; and
The method of controlling a lighting device for a vehicle further comprising: causing the control unit to operate the drive unit to rotate the second body at a corrected rotation angle.

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