Abstract: Vehicle indicator lights, such as run-brake lights and/or side running lights, are converted to run-turn-brake indicator lights. A run-turn-brake converter is connected to vehicle-supplied run, brake, left turn, and right turn signal leads, the run-turn-brake converter producing left and right run-turn-brake signals. Existing vehicle wiring is reconfigured by disconnecting a first lead wire from the low-intensity input of a first three-terminal brake-run light socket, disconnecting a second lead wire from the low-intensity input terminal of a second three-terminal brake-run light socket, disconnecting a third lead wire from the high-intensity input terminal of the second three-terminal brake-run light socket, and connecting the second lead wire to the high-intensity input terminal of the second three-terminal brake-run light socket. The left and right run-turn-brake signals are connected to the sockets via the second lead wire and via a fourth lead wire, respectively.

Abstract: A lighting device of a vehicle is provided. The lighting device comprises a light fitting, which comprises a first and a second light source with different color locations. Furthermore, the lighting device has a first sensing module, which senses the actual value of the color location of the light fitting. In addition, the lighting device comprises a set value generator module which presets a set value for the color location of the light fitting, and a control module which reduces the difference between set value and actual value by means of an actuator module. Here, the set value of the color location of the light fitting is dependent on a driving situation of the vehicle or a personalized driving setting.

Abstract: Lighting elements composed of thermoplastic molding compositions comprising A) from 10 to 99.9% by weight of at least one thermoplastic polyester, B) from 0.1 to 50% by weight of at least one terpolymer, obtainable from b1) at least one vinylaromatic monomer, b2) at least one C1-C4-alkyl (meth)acrylate or (meth)acrylonitrile, and b3) from 0.1 to 10% by weight, based on the total weight of the components b1) to b3), of at least one monomer which comprises an ?,?-unsaturated anhydride, and C) from 0 to 60% by weight of other additives, where the total of the percentages by weight of components A) to C) is 100%.

Abstract: The invention relates to a lighting device for a motor vehicle. Said lighting device comprises a gas discharge lamp (1; 96) for emitting light, a starting device for providing a starting voltage for starting the gas discharge lamp (1; 96) and a control device for providing an input voltage for the starting device and an operating voltage for operation of the gas discharge lamp (1; 96). The control device is an integral part of the starting device. In order to come to grips with the problems associated with space and temperature with such lighting devices, the invention proposes that the combined starting and control device (5; 80) has a plug element (6) for connecting a vehicle power supply system voltage (7), the plug element (6) being in the form of a printed circuit board plug, which is formed by conductor tracks (21; 23) guided at an edge of a printed circuit board (20) of the starting and control device (5; 80).

Abstract: The invention relates to a device for controlling diode lamps comprising a lighting module having at least one diode lamp, the diode lamp pertaining to a predefined range, at least one device for transmitting a unique signature representing the range, and an associated control module comprising reception means (for receiving a unique signature transmitted by the lighting module, and current adjustment means for adjusting and supplying, as a function of the transmitted signature, a current to said lighting module to cause the diode lamp to operate.

Abstract: A process, system and procedure of controls of the supply of a vehicle headlamp suitable to supply lighting in high beam function and/or low beam function, comprising the following stages for at least one of the low beam function and high beam functions: determining at least one driving parameter pertinent to the lighting of the vehicle, defining several lighting modes characterized by the value of this at least one parameter, attributing a supply mode of the headlamp to each lighting mode, and storing in memory the supply mode associated with each of the lighting modes.

Abstract: Provided is a light distribution control system for vehicle in which each of left and right head lamp housings is provided with camera that picks up image of the forward area of vehicle, main lamp unit that forms basic light distribution pattern which is symmetric at the forward area of the vehicle, first sub lamp unit that forms first additional light distribution pattern at lateral side of the vehicle as compared to the basic light distribution pattern, second sub lamp unit that forms second additional light distribution pattern at lateral side of the vehicle, and control unit that controls the turning-ON/OFF of the first and second sub lamp units based on the image data of the camera. The control unit may form non-symmetric light distribution pattern as a whole at the forward area of the vehicle according to road environment.

Abstract: A vehicular vision system includes a control and an imager having a lens and a CMOS photosensor array. The imager is disposed at an interior portion of a vehicle and views exterior of the vehicle through a windshield of the vehicle and forward of the vehicle. The control includes an image processor for processing image data captured by the photosensor array. The image processor processes captured image data to detect an object viewed by said imager. The photosensor array may be operable at a plurality of exposure periods that include a first exposure period and a second exposure period, with the time period of exposure of the first exposure period being longer than the time period of exposure of the second exposure period. The imager may be disposed in a module attached at the windshield of the vehicle.

Abstract: Problem to be Solved: In left and right independent lighting power sources, even when left and right light-emitting units each including one or a plurality of LEDs light up with a time difference, the quality of emission as headlamps is increased by making it difficult to visually identify the time difference. Solution: A DC/DC converter for supplying the electric power supplied by a battery to the light-emitting unit is operated to change the current supplied to the light-emitting unit such that the current is gradually increased to attain a rated current, to thus avoid the case where one of the left and right headlamps enters a lighting state, when the other does not light up yet.

Abstract: A headlamp in an automobile, which is rotatable about a yaw axis when negotiating a bend, has a controller for controlling the rotary movement. In order to improve the illumination of a roadway lying in front of an automobile, the controller may take into account a driving profile.

Abstract: A light source turn-on/off controller includes an input section of a turn-on/off timing signal, a PWM signal generating section for generating a pulse signal responding to a rise or a fall of the timing signal, a duty cycle of the pulse signal changing so as to simulate a rise or a fall of emission in turn-on or turn-off of a filament, an emission control section for controlling an emitting section responding to the pulse signal from the PWM signal generating section, and a storage section for storing a control data table for duty cycle control by the PWM signal generating section. The control data table includes a rise table to be referred to in the rise of emission and a fall table to be referred to in the fall of emission, and each of the rise table and the fall table indicates association between elapsed time from the rise or the fall of the timing signal and the duty cycle of the pulse signal, and a relationship between the tables indicates that they cannot be superposed on each other.

Abstract: A transit vehicle lighting system has a plurality of LED-based lighting fixtures for providing interior illumination. A control network comprises a plurality of slave nodes for controlling the LED-based lighting fixtures, and a master node for controlling the slave nodes. The master node may be connected to the slave nodes by a combined power/communication bus in a daisy chain fashion. The slave node may include a power regulator and a controller for providing a target current command to the power regulator, and may adjust the target current based upon temperature measurements or a recorded age of the LEDs. An optical sensor may provide automatic dimming. A reduced number of LEDs may be used in an emergency mode. The lighting fixture may include a ceiling panel fixture and a riser panel attachable by way of a hinge mechanism.

Abstract: A lighting device comprises a power circuit unit 23 that includes a plurality of power terminals 25 supplied with power from a power source, a plurality of harnesses 29 that supply power supplied to the power circuit unit to a discharge lamp, a terminal housing 43 that is made of a resin material, and includes a harness holding portion 48, one ends of the plurality of harnesses being disposed in the harness holding portion and a part of the plurality of harnesses being held in the harness holding portion, and a plurality of welding terminals 28 that includes portions disposed in the terminal housing and portions protruding outward from the terminal housing. One end portions of the plurality of welding terminals are connected to one end portions of the electric wires of the harnesses, respectively, and the other end portions of the plurality of welding terminals are connected to the power terminals of the power circuit unit by welding, respectively.

Abstract: In vehicle headlamp control apparatuses, which receive a direct current voltage Es, light discharge lamps by square waves, and drive motors, in each of which the number is at least one, arithmetic operations are performed for synchronizing the square waves for lighting the discharge lamps and pulses for driving the motors with each other and for driving the motors within a substantially constant time after polarities of the square waves for lighting the discharge lamps are inverted. By using an inexpensive microcomputer, the vehicle headlamp control apparatuses make it possible to realize lighting controls for the discharge lamps and smooth drive controls for headlamps and auxiliary lamps by the motors for varying optical axes thereof.

Abstract: An automotive lighting system (20) is described with a signal emitting device (30) installed in a lamp socket (18). The lamp socket (18) is connected to a lighting connection (16) of a vehicle (10). The signal emitting device (30) emits a signal if the lighting connection (16) is energized. A lighting module (24) is connected to an electrical power supply (28) of the vehicle (10). The lighting module (24) comprises a receiver (42), a control unit (45) and a light source (22). The control unit (46) is disposed to operate the light source (22) in a first mode if a signal is received in the receiver, and in a second mode if the signal is not received.

Abstract: A headlight of a motor vehicle includes several light emitting devices which are arranged next to each other in at least one direction of the extent of the headlight. When the headlight is switched on, the light emitting devices along at least one direction of the headlight are switched on sequentially.

Abstract: A lighting device includes: a power conversion unit which converts a direct current (DC) power into a power required by a load; an output current detection unit which detects an output current of the power conversion unit; and a source voltage detection unit which detects a source voltage. Further, the lighting device includes an operation unit which calculates an output current command value so as not to exceed an upper limit of the output current command value set according to a resistance value of an externally connected resistor; and a control unit which controls the power conversion unit such that the output current thereof the power conversion unit becomes the output current command value.

Abstract: To avoid glaring a front vehicle that appears in a curved road ahead of a subject vehicle. A lighting control device for a headlamp of a vehicle includes: a lamp determining unit determining whether there is one light emitted from a lamp of a target vehicle, based on an image acquired by capturing the front of the vehicle by a camera; a light-blocking range setting unit setting a light-blocking range in accordance with the positions of the lamp based on the image; a curved road detection unit detecting a direction of a curved road, in cases where the curved road is present ahead of the vehicle; a light-blocking range correction unit providing an amount of correction to the light-blocking range according to the detected direction of the curved road; and a headlamp control unit driving the headlamp based on the corrected light-blocking range.

Abstract: A method for determining an illumination range of at least one headlight of a vehicle includes a step of detecting at least one road-marking feature, which is illuminated by the at least one headlight, a step of ascertaining a distance between the vehicle and the at least one illuminated road-marking feature, and a step of determining the illumination range of the at least one headlight, using the ascertained distance.

Abstract: Techniques for providing a method and system for light sensing vehicle light modulator are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method, comprising detecting incoming light utilizing a plurality of light sensors operatively connected to an vehicle, measuring the incoming light intensity, and decreasing a intensity of light output by one or more lights of the vehicle based at least in pan on a measurement of the incoming light intensity.

Abstract: An extraction unit extracts a forward vehicle from an acquired image of the forward area image. A judgment unit extracts a lamp of the forward vehicle from the image of the extracted forward vehicle if a distance to the forward vehicle is less than a predetermined value, and judges whether the extracted lamp is actually two lamps or a single lamp. A control unit controls an irradiation direction of a headlamp such that a first shielded area is set in an irradiation area to prevent an area including the lamp of the forward vehicle from being irradiated if judged that the extracted lamp is actually two lamps, and such that a second shielded area is set in the irradiation area to have a margin in right and left directions larger than the first shielded area if judged that the extracted lamp is really only a single lamp.

Abstract: An electrical control circuit for a lighting and/or signaling module handling at least two functions from one and the same network of light sources of LED type. The function selection is handled by one or more input signals on the monitoring unit. If a branch or section connected to a defective LED fails, the monitoring unit can either deactivate all the branches or sections, or keep the remaining branches or sections active, and do so according to the function that is present. One or more functions can thus be compared to the single-section type despite the presence of a number of sections when the monitoring unit is configured to deactivate all the sections if one of the sections fails.

Abstract: The present invention includes a light source 10 and a socket 11. The light source 10 includes a base plate 3, light emitting chips 41 to 44 for a semiconductor-type light source, resistors 51, 52, diodes 53, 54 and wiring 6. The socket 11 includes an insulating member 7, a radiating member 8 and feed members 91 to 93. The light source 10 is attached to the socket 11. The base plate 3 is attached to the radiating member 8. Such a structure of the present invention can be implemented in reduced size and with an enhanced heat radiation effect.

Abstract: Embodiments include lighting systems and methods for controlling the activation of daytime running lamps (DRLs). Embodiments of the method include receiving inputs from one or more on-board subsystems, and when the lighting system is set in an automatic control mode and the headlights are deactivated, selectively activating and deactivating the DRLs based on the inputs. Embodiments of the lighting system include DRLs, headlights, and a processing and control subsystem. The processing and control subsystem is adapted to determine whether a DRL activation criteria is met when the lighting system is set in an automatic control mode, to activate the DRLs when the DRL activation criteria is met and the headlights are deactivated, and to deactivate the DRLs when the DRL activation criteria is not met and the headlights are deactivated.

Abstract: A vehicle headlamp system including at least one headlamp switchable between at least a high beam mode and a low beam mode by a biased actuator movable by a driver of the vehicle, a headlamp arranged to emit a flash when the biased actuator is moved to a temporary-on position, and means for limiting the maximum duration of the flash to less than 2 seconds.

Abstract: A method for controlling forward lighting for a vehicle includes the steps of determining whether full forward lighting is required for the vehicle, and varying the forward lighting depending on whether full forward lighting is required.

Abstract: A vehicle lamp controller includes a lamp control unit that performs lamp control, in which light amount or light distribution of each of a plurality of lamps to be provided on a vehicle that runs on electric power from a battery, is controlled, according to a priority that is assigned to each of the plurality of lamps, wherein the priorities are determined based on degrees of necessity of the plurality of lamps in securing safety for the vehicle. The vehicle lamp controller may further include a remaining battery charge detecting device for detecting a remaining charge of a battery, and the lamp control unit may be configured to perform the lamp control according to the priorities when the remaining charge becomes lower than a predetermined threshold.

Abstract: A vehicle-mounted load controller is characterized by including: a power terminal connected to a power line through a fuse; load connecting portions to which loads having vehicle-mounted light sources are connected; switches which are provided corresponding to the load connecting portions and which control states of power supply from the power line connected to the power terminal to the light sources connected to the load connecting portions; and a control unit which controls the switches in response to inputted control signals. The vehicle-mounted load controller is characterized in that the multiple load connecting portions to which the multiple light sources for different uses are respectively connected are electrically connected to the power terminal, and that each of the switches stops the supply of power from the power line to the light source connected to the corresponding load connecting portion when the magnitude of current flowing through the light source reaches or exceeds a predetermined value.

Abstract: Disclosed is an automotive headlamp system which can control an illumination pattern of headlamps by rotating a headlamp unit and/or adjusting the light intensity of a light source included in the headlamp unit based on the position of a front vehicle located ahead in a driving direction, and a method of controlling the automotive headlamp system. The automotive headlamp system includes an image capture unit capturing an image of an area ahead of a vehicle in a driving direction of the vehicle, a position determination unit determining a position of a front vehicle based on the captured image, a headlamp unit comprising an array of a plurality of light sources, and a control unit controlling an illumination pattern of the headlamp unit by rotating the headlamp unit and/or adjusting a light intensity of a light source based on the determined position of the front vehicle.

Abstract: A power supply device includes a series circuit including a first capacitor and a first and second inductors connected to both terminals of the first capacitor; a switching element having one terminal connected to a node between one terminal of the first inductor and the first capacitor; a rectifier having an anode connected to a node between the first capacitor and one terminal of the second inductor; and a second capacitor connected between the other terminal of the switching element and a cathode of the rectifier. Further, a DC power supply source is connected between the other terminal of the first inductor and the other terminal of the switching element such that the other terminal of the first inductor is connected to a positive electrode side of the DC power supply source. A load is connected between the other terminal of the second inductor and the cathode of the rectifier.

Abstract: A vehicle headlamp includes: a light-emitting module; a control circuit section for controlling a lighting of the light-emitting module; and a reflector including a reflecting face configured to reflect and collect light emitted from the light-emitting module. The control circuit section includes an opposing portion that is opposed to the reflecting face. The opposing portion is disposed at a position away from an optical path of light to be collected by the reflector.

Abstract: A discharge lamp lighting circuit facilitates carrying out re-ignition and addresses a problem than can arise due to an influence of a capacitor in an auxiliary lighting circuit. A driving voltage generating portion supplies an AC driving voltage to a discharge lamp to be a driving target. An auxiliary lighting circuit is provided on a terminal side of the discharge lamp. An auxiliary lighting capacitor, an auxiliary lighting resistor and a switch are provided in series between the terminal of the discharge lamp and a fixed voltage terminal. A control circuit controls a conducting state of the switch. The switch is brought into an ON state before the discharge lamp is turned ON, and is brought into an OFF state after the discharge lamp is turned ON.

Abstract: A vehicle headlamp using a high-power LED light source, receiving power regulated by a driver circuit, is mounted in a housing and covered at least in part by a light transmissive cover using a construction by which heat developed by the driver circuit (current regulator) is conducted to the light transmissive cover, thereby heating the transparent cover and so retarding the formation or accumulation of ice and snow on the light transmissive cover.

Abstract: A vehicle exterior lamp is provided with an array of light emitting diodes (LEDs) with rows and columns and each LED positioned at an intersection thereof. An LED is illuminated by selectively applying a signal to the row and column corresponding to the LED position. A vehicle headlamp lighting system is provided with an array of LEDs with rows and columns, and each LED positioned at a row and column intersection. The lighting system has a control module for selectively illuminating the LEDs by applying a signal to the rows and to the columns corresponding to the location of the LEDs to be illuminated. A vehicle headlamp is provided with an optical structure for reflection and refraction of light and LEDs. Light emitted by the LEDs interacts with the optical structure and exits the headlamp in a generally perpendicular direction to the LED emitted light.

Abstract: Provided are a head lamp assembly and a method for controlling the same. A head lamp assembly according to the present disclosure includes: a rotation control unit for rotating a head lamp to determine an irradiating direction of the head lamp; a lighting unit provided in the head unit to generate light; a shield unit located at the front of the lighting unit and having a cylindrical shape to be rotatable on a rotary shaft, the shield unit having a plurality of shield protrusions provided on the circumference thereof to partially intercept the light; and a shield operating unit for activating a selected shield protrusion, wherein the plurality of shield protrusions have different shapes from each other, wherein the plurality of shield protrusions include first and second shield protrusions having the same height and having steps which protrude upward and whose starting locations are different from each other.

Abstract: Provided is an apparatus and method for providing a fail-safe in a head lamp apparatus.

Abstract: A light source turn-on/off controller includes an input section of a turn-on/off timing signal, a PWM signal generating section for generating a pulse signal responding to a rise or a fall of the timing signal, a duty cycle of the pulse signal changing so as to simulate a rise or a fall of emission in turn-on or turn-off of a filament, an emission control section for controlling an emitting section responding to the pulse signal from the PWM signal generating section, and a storage section for storing a control data table for duty cycle control by the PWM signal generating section. The control data table includes a rise table to be referred to in the rise of emission and a fall table to be referred to in the fall of emission, and each of the rise table and the fall table indicates association between elapsed time from the rise or the fall of the timing signal and the duty cycle of the pulse signal, and a relationship between the tables indicates that they cannot be superposed on each other.

Abstract: A device for controlling a driving light of a vehicle includes a headlight with a light source, a device for pivoting a produced light distribution and an optical element that provides adjustable light distribution. The optical element includes a light passage opening pivotable into an optical axis of the light source. A beam of the light distribution is limited or deflected such that a limited light field is produced in a pre-settable region in front of the vehicle, which light field has an external form of the light passage opening. Further light passage structures provide a “high beam” or “partial high beam” light pattern and thereafter the “high beam” light pattern by turning, pivoting and/or displacing the optical element in one direction, and another further light passage structure provides a “motorway” and thereafter a “country road” light pattern by turning, pivoting and/or displacing the optical element in an opposite direction.

Abstract: A vehicle lamp includes a semiconductor light emitting device as a light source, a power supply module configured to supply electric power from a power source to the semiconductor light emitting device, and a housing in which the power supply module is accommodated. The semiconductor light emitting device is mounted on the power supply module. The power supply module comprises a current control circuit configured to control an amount of current supplied to the semiconductor light emitting device. The semiconductor light emitting device and the current control circuit are arranged to overlap each other in a direction of an optical axis of the semiconductor light emitting device.

Abstract: A lighting device includes a DC/DC converter for receiving DC power and converting the DC power into a predetermined output required for a load; a voltage detection unit for detecting an output voltage or an equivalent value from the output voltage; a current detection unit for detecting an output current or an equivalent value from the output current; and a control unit for controlling the DC/DC converter based on detection values from the voltage detection unit and/or the current detection unit. The control unit reduces the output when a rapid change is detected in a load state in which a change in the output within a first predetermined time is equal to or greater than a predetermined width.

Abstract: A vehicle head lamp light distribution controller includes an ADB controller configured to: detect a position of a vehicle present ahead of a subject vehicle; determine whether the vehicle ahead of the subject vehicle is a preceding vehicle or an oncoming vehicle; set a threshold vehicle position based on whether the vehicle ahead of the subject vehicle is a preceding vehicle or an oncoming vehicle; compare the threshold vehicle position and the detected vehicle position; and switch light distribution of head lamps of the subject vehicle based on the comparison between the threshold vehicle position and the detected vehicle position.

Abstract: An adaptive forward lighting system for a vehicle includes an imaging sensor having a field of view forward of the direction of travel of the controlled vehicle. A control processes image data to determine, at least in part, at least one of (i) the presence of an object of interest in the forward field of view of the imaging sensor, (ii) the location of an object of interest in the forward field of view of the imaging sensor, and (iii) a characteristic of an object of interest in the forward field of view of the imaging sensor. A beam pattern of a vehicle headlamp of the controlled vehicle is adjusted responsive, at least in part, to the processing of the image data. The control receives vehicle data via a vehicle communication bus. The control, responsive to processing of image data, is operable to provide at least one other function.

Abstract: The disclosure facilitates determining the presence of an abnormality of a light source in a vehicular lamp using, as a determination condition, a number of disconnected semiconductor light-emitting elements among multiple semiconductor light-emitting elements. The vehicular lamp includes a first light source block that has light-emitting diodes LED1 to LED6 connected in parallel; a second light source block that has light-emitting diodes LED7 to LED12 connected in parallel; and an abnormality determination circuit that controls a supply of current from an on-board battery to the light source blocks and determines whether an abnormality is presence in the light source blocks. The abnormality determination circuit determines the presence of an abnormality if the disconnected light-emitting diodes in one of the light source blocks exceed a predetermined number and current cannot flow to the light source block. In such case, the supply of current to the light source blocks is stopped.

Abstract: An LED short-circuit detection circuit produces an LED short-circuit detection signal by monitoring an LEDC terminal voltage (a first voltage obtained at a chip-to-chip node in a row of LED chips, or a divided voltage thereof) and an LEDR terminal voltage (a second voltage obtained by dividing the end-to-end voltage of the row of LED chips).

Abstract: A motor vehicle headlight element is specified which has at least one light-emitting diode and at least one control apparatus. The control apparatus is suitable for processing a signal which is dependent on a measurement variable and for applying a current, corresponding to the signal, to the light-emitting diode. The control apparatus and the light-emitting diode are arranged on a common mount.

Abstract: An automotive illumination device includes a dome lamp bulb, a transistor switch, an in-vehicle unit, a door status detection unit, and a microcontroller. When user's access to an automobile has been detected by the in-vehicle unit, the microcontroller controls ON/OFF operation of the transistor switch at duty ratio of 60 percent to turn on the dome lamp bulb at brightness of 60 percent (welcome illumination state or mode). When opening of a door of the automobile has been detected by the door status detection unit during the welcome illumination, the microcontroller controls the ON/OFF operation of the transistor switch to always close the transistor switch (at duty ratio of 100 percent) to illuminate the dome lamp bulb at brightness of 100 percent.

Abstract: A method and system is provided for automatic brightness control of a light source. The system includes at least one light sensor that operates in a different range of the light spectrum than the light spectrum generated by the controlled light source.

Abstract: A vision system for a vehicle includes a first imaging sensor having a first forward field of view and a second imaging sensor spaced from the first imaging sensor and having a second forward field of view, which at least partially overlaps with the first forward field of view. A control processes image data captured by at least one of the first and second imaging sensors to determine an object present in the first and/or second forward fields of view. The control is operable to modulate a headlamp of the vehicle responsive to the processing of image data captured by the at least one of the first and second imaging sensors. The control may process image data captured by both of the imaging sensors to determine a distance between the equipped vehicle and an object present in the overlap of the first and second forward fields of view.

Abstract: A lighting device and a lighting system for a vehicle are provided. The lighting device includes a signal detecting portion which receives a light control direction signal; a control portion which controls a light source according to the light control direction signal; and a lighting state signal generating portion which outputs a lighting state signal based on the light control direction signal received by the signal detecting portion. The lighting system includes the lighting device and a light source.

Abstract: In a method for a vehicle-based illumination of traffic environments, light is irradiated from a vehicle into a traffic environment to detect critical objects, with the intensity averaged over time being reduced when producing the light so as to prevent the human eye from being blinded. The light is irradiated intermittently into the traffic environment in accordance with ON periods and OFF periods. In an OFF period, no light is irradiated from the light source into the traffic environment, while during an ON period the light is irradiated in the traffic environment.