• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a vehicle headlight system (100) comprising a headlight unit (20) and a headlight control unit (26). The headlight unit comprises a plurality of LEDs (28) and forms a traffic light distribution pattern. The headlight control unit (26) controls the switching on / off of each of the plurality of LEDs (28). The headlight control unit (26) controls each LED (28) in the following manner. Specifically, the brightness is gradually decreased in a first period when the brightness is decreased to a level at which the LED (28) remains on at a reduced brightness. The brightness is gradually decreased in a second period shorter than the first period when the brightness is decreased to a level at which the LED (28) is off.
    公开号:FR3040340A1
    申请号:FR1657981
    申请日:2016-08-26
    公开日:2017-03-03
    发明作者:Atsushi Uesugi；Hideki Uchida；Kiyotaka Mochizuki；Tatsuya Takagaki；Takuya Murakami
    申请人:Koito Manufacturing Co Ltd；Toyota Motor Corp；
    IPC主号:
    专利说明:

    VEHICLE HEADLIGHT AND VEHICLE HEADLIGHT SYSTEM
    The present invention relates to vehicle headlights and vehicle headlight systems used in automobiles or their equivalent.
    Typically, a vehicle headlight can be switched between a low beam and a high beam. The dipped beam lights a short distance at a predetermined intensity. The light distribution patterns of the low beam are regulated so as not to cause dazzle of the vehicle in front or of the vehicle in front and the low beam is used mainly when the vehicle is traveling in urban areas. In addition, the high beam illuminates a long and wide distance ahead at a relatively high intensity and is used mainly when the vehicle is traveling at high speed on a road with few vehicles in front or few vehicles in front. . The high beam therefore provides better visibility for the driver than the low beam but disadvantageously causes dazzle of the driver of a vehicle in front of or a vehicle in front or pedestrian.
    [0003] In recent years, a dynamic and adaptive control technique for a traffic light distribution pattern based on the conditions surrounding a vehicle has been proposed (see, for example, JP 2008-137516). According to this technique, the presence of a vehicle in front of, a vehicle facing or a pedestrian is detected and the light emitted in a region corresponding to the detected vehicle or pedestrian is attenuated so as to reduce the glare of the vehicle or the pedestrian.
    Typically, in a conventional vehicle headlight system, regardless of whether the brightness is decreased to a level at which the headlight remains on with reduced brightness or at a level at which the headlight is off to reduce the dazzle a vehicle or a pedestrian, the brightness is gradually decreased until reaching the target brightness indiscriminately in the same period of time. This may be preferable in terms of simplification of the control but leaves room for improvement in terms of comfort for the driver.
    The present invention has been made taking into account such a situation and relates to the provision of a vehicle headlight system that can improve the comfort for the driver.
    To solve the problem described above, a vehicle headlight system according to one aspect of the present invention comprises a headlight unit configured to combine light beams from a plurality of light emitting elements so as to forming a traffic light distribution pattern and a control unit which controls the on / off state of each of the plurality of light emitting elements. The control unit controls each light emitting element such that its brightness is gradually decreased in a first period when the brightness is decreased to a level at which the light emitting element is turned off and controls each light emitting element so that its brightness is gradually decreased in a second period, longer than the first period, when the brightness is decreased to a level at which the light emitting element remains lit with reduced brightness.
    Embodiments will now be described by way of example only, with reference to the accompanying drawings which are exemplary, without being limiting, and in which similar elements have identical references in the multiple figures in which FIG. 1 is a flowchart of a vehicle headlight system according to one embodiment; - Figure 2 schematically illustrates a light distribution pattern formed by the vehicle headlight system; FIGS. 3A to 3H illustrate an example of a change in the brightness distribution of each partial region of a traffic light distribution pattern; FIG. 4 is a timing diagram illustrating a change in the time of the brightness of each partial region; FIGS. 5A and 5B illustrate another example of a change in the brightness distribution of each partial region of a traffic light distribution pattern; and FIG. 6 is a timing diagram illustrating a time change in the brightness of each partial region of a traffic light distribution pattern formed by a vehicle headlight system according to a comparative example.
    The invention will now be described with reference to the preferred embodiments. This is not intended to limit the scope of the present invention but to provide an example of the invention. The size of the component on each figure can be changed to help understanding. Some components may be omitted from each figure if they are not useful as part of the explanation.
    Figure 1 is a flowchart of a vehicle headlight system 100 according to one embodiment. The vehicle headlight system 100 includes a vehicle speed sensor 10, a steering angle sensor 12, a camera 14, a vehicle control unit 16 and a vehicle headlight 18.
    The vehicle speed sensor 10 detects the speed of rotation of the wheels to thereby detect the speed of the vehicle. The steering angle sensor 12 detects the steering angle of the driving wheel. The camera 14 captures an image of an area at the front of the vehicle.
    The vehicle control unit 16 controls the vehicle as a whole. The vehicle control unit 16 detects the presence of a vehicle in front of or a vehicle coming in front and the position of the detected vehicle on the basis of the image information acquired by the camera 14. On the basis of As a result of this detection, the vehicle speed information and the steering angle information, the vehicle control unit 16 determines a light distribution pattern formed by a combination of a lit region, which must be illuminated with a light beam, and an extinct region (blocked region) which should not be illuminated with a light beam. The vehicle control unit 16 transmits to the vehicle headlight 18 a pattern instruction S1 indicating the determined light distribution pattern.
    The vehicle headlight 18 forms a light distribution pattern of the road light. The current vehicle headlight 18 is equipped, in addition to a high beam, an additional high beam to illuminate a greater distance, a dipped beam, a clearance light, etc., but these are omitted here.
    The vehicle headlight 18 comprises a headlight unit 20, a semiconductor switch 22, a lighting circuit 24 and a headlight control unit 26. The current vehicle headlight system 100 is provided with a pair of vehicle headlights 18 right and left but only one of the two is shown here.
    The headlight unit 20 comprises a plurality of semiconductor light sources (for example light emitting diodes, or LEDs) 28 that can be turned on / off individually. Each LED 28 is lit when a driving current Ild is applied thereto.
    The semiconductor switch 22 is provided on a path via which current is supplied from a battery (not shown) to the lighting circuit 24 and the opening / closing of the semiconductor switch. 22 is controlled in accordance with a control signal S2 emanating from the headlight control unit 26.
    The semiconductor switch 22 is closed ("on" state) when the LEDs 28 are on.
    The headlight control unit 26 individually controls the switching on / off of the plurality of LEDs 28 on the basis of the SI pattern instruction. In the present embodiment, the headlight control unit 26 selects, for each of the plurality of LEDs 28, a mode from a first mode, a second mode and a third mode in which the brightness is to be gradually changed and generates an on / off command signal S3 controlling the switching on / off of each LED 28 in the selected mode.
    The headlight control unit 26 selects the first mode when an LED 28 must be off. In the first mode, the brightness is gradually decreased so that the brightness reaches a level at which the LED 28 is off (i.e., the brightness is 0) in a first period (i.e. say that LED 28 is gradually off). In one example, the first period is 300 ms (milliseconds). When the vehicle is traveling at high speed, the first period may be 500 ms. This avoids a situation in which reflective plates can be confused with a vehicle in front and the brightness is changed frequently.
    The headlight control unit 26 selects the second mode when an LED 28 must remain on at a reduced brightness. In the second mode, the brightness is gradually decreased so that the brightness reaches the target brightness at which the LED 28 remains on at a reduced brightness in a second period, longer than the first period. In one example, the second period is 400 ms. When the vehicle is traveling at high speed, the second period can be 7000 ms, for the same reason as described above.
    The headlight control unit 26 selects the third mode when an LED 28 must remain on at an increased brightness. In the third mode, the brightness is gradually increased by a level at which the LED 28 is turned off or on at the target brightness at which the LED 28 is illuminated with increased brightness in the second period as in the second mode.
    The lighting circuit 24 comprises control circuits 30 and gradual change controllers 32 provided for the LEDs 28 respectively. The control circuits 30 supply the LEDs 28 with control currents Ild corresponding to the respective light control signals S4. Each driver circuit 30 can perform both an analog light control by adjusting the amount of driving current Ild and a pulse width modulator (PWM) control by varying the cyclic ratio of the driving current Ild by switching the driving current Ild at high speed or can perform only one of the two.
    Each gradual change controller 32 generates a light control signal S4 gradually changing with time as a function of an on / off command signal S3 emanating from the headlight control unit 26. In particular, when the first mode is selected, the gradual change controller 32 causes the light control signal S4 to change relatively abruptly in a direction in which the driving current Ild decreases. When the second mode is selected, the gradual change controller 32 gradually smoothly varies the light control signal S4 in a direction in which the driving current Ild decreases. When the third mode is selected, the gradual change controller 32 gradually smoothly varies the light control signal S4 in a direction in which the driving current Ild increases.
    Figure 2 schematically illustrates a light distribution pattern formed by the vehicle headlight system 100 configured as described above. Figure 2 illustrates a light distribution pattern formed on a virtual vertical screen disposed in a predetermined position in front of the headlight, for example, in a position 25 meters ahead of the headlight.
    A light distribution pattern PH is a road light distribution pattern formed by the illumination light of the headlight unit 20. The light distribution pattern PH is divided into a plurality of (FIG. here eight) partial regions PHa to PHh and the partial regions correspond to the respective LEDs 28. In other words, the vehicle headlamp 18 can form, in a zone situated at the front of the vehicle, the road fire light distribution pattern PH consisting of the plurality of partial regions PHa to PHh corresponding to the regions of the vehicle. lighting of the respective LEDs 28.
    FIGS. 3A to 3H illustrate an example of a change in the brightness distribution of each of the partial regions PHa to PHh. FIGS. 3A to 3H illustrate the brightness distributions at times T 0 to T 7, respectively. In FIGS. 3A to 3H, the longer a given bar is, the greater the brightness of its corresponding partial region. In other words, the longer a given bar is, the greater the brightness of the LED 28 which illuminates the corresponding partial region. FIG. 4 is a timing diagram illustrating the changes in the time of the brightness of the partial regions PHb to PHf among the partial regions illustrated in FIGS. 3A to 3H, or in other words, the changes in the time of the brightness of the LEDs 28 which illuminate the partial regions PHb to PHf respective. An example of a housing is described below. Specifically, at the instant Ti, a target light distribution pattern is changed, a vehicle ahead is detected in the partial regions PHc to PHf and the partial regions PHc to PHf are defined as blocked regions. At time T2, the vehicle being ceased to be detected in the partial regions PHe and PHf and the partial regions PHe and PHf are defined as active regions. At time T3, the vehicle being ceased to be detected in the partial region PHd and the partial region PHd is defined as an active region.
    The brightness of the partial regions PHa and PHb is gradually decreased to a level at which the LEDs 28 are extinguished since the target light distribution pattern has been changed at the instant ΊΥ In addition, the brightness of the Partial region PHc is gradually decreased to a level at which the LED 28 is extinguished since the partial region PHc has been defined as a blocked region at time Ti. In other words, the brightness of the LEDs 28 corresponding to the respective partial regions PHa to PHc is gradually decreased in the first mode (i.e., the LEDs 28 are gradually extinguished in a first period t1).
    The brightness of the partial region PHd begins to be gradually decreased to a level at which the LED 28 is extinguished since the partial region PHd has been defined as a blocked region at the instant Ti. In other words, the brightness of the LED 28 corresponding to the partial region PHd begins to be gradually decreased in the first mode (i.e., the LED 28 begins to be gradually extinguished in the first period t1) . Then, since the partial region PHd has been defined as a region turned on at time T3, the brightness of the partial region PHd is gradually decreased to a level at which the LED 28 is lit with the brightness corresponding to the pattern of target light distribution. In other words, the brightness of the LED 28 corresponding to the partial region PHd is gradually decreased until it reaches the target brightness in the second mode (i.e., the brightness is gradually decreased in a second period t2).
    The brightness of the partial region PHe begins to be gradually decreased to a level at which the LED 28 is off since the partial region PHe has been defined as a locked region at time Ti. In other words, the brightness of the LED 28 corresponding to the partial region PHe begins to be gradually decreased in the first mode. Then, since the partial region PHe has been defined as a lit region at the instant T2, the brightness of the partial region PHe is gradually decreased to a level at which the LED 28 is lit at the brightness corresponding to the pattern of target light distribution. In other words, the brightness of the LED 28 corresponding to the partial region PHe is gradually decreased until reaching the target brightness in the second mode.
    The brightness of the partial region PHf begins to be gradually decreased to a level at which the LED 28 is off since the partial region PHf has been defined as a blocked region at the instant iy In other words, the The brightness of the LED 28 corresponding to the partial region PHf begins to be gradually decreased in the first mode. Then, since the partial region PHf has been defined as a lit region at time T2, the brightness of the partial region PHf is gradually increased to a level at which the LED is illuminated with a brightness corresponding to the light distribution pattern. target. In other words, the brightness of the LED 28 corresponding to the partial region PHf is gradually increased to the target brightness in the third mode (i.e., the brightness is gradually increased in the second period t2 ).
    The brightness of the partial regions PHg and PHh is gradually decreased to a level at which the LEDs 28 are illuminated with the brightness corresponding to the target light distribution pattern since the target light distribution pattern has been changed to In other words, the brightness of the LEDs 28 corresponding to the partial regions PHg and PHh is gradually decreased in the second mode.
    As can be seen clearly on the timing of the partial regions PHe and PHg, the brightness is gradually changed in the first mode (that is to say in a relatively short period of time) when a LED 28 must to be gradually off and the brightness is gradually changed in the second mode (i.e. in a relatively long period of time) when an LED 28 must remain on at a reduced brightness. Moreover, as can be clearly seen in the partial area timing diagrams PHe and PHf, regardless of whether the brightness is decreased or increased, the brightness is gradually changed in the same period of time when the brightness has been changed to a level at which an LED 28 is lit. Moreover, as can be clearly seen in the timing of the partial regions PHd to PHf, when the brightness has to be changed to a level at which an LED 28 is lit, such a brightness change ends in the order in which the change began.
    FIGS. 5A and 5B illustrate another example of a change in the brightness distribution of each of the partial regions PHa to PHh of the light distribution pattern PH. This example illustrates a case in which the light distribution pattern is changed from the state shown in Fig. 5A to the fully off state illustrated in Fig. 5B when all the LEDs 28 are off. The brightness of all the partial regions PHa to PHh is gradually decreased to a level at which the LEDs 28 are extinguished. This means that the brightness of the LEDs 28 corresponding to the respective partial regions PHa and PHh is gradually decreased in the first mode. In other words, the brightness of all the partial regions reaches 0 in the first period (that is to say, substantially at the same time).
    FIG. 6 is a timing diagram illustrating an example of changes in the time of the brightness of the partial regions PHa to PHh of a traffic light distribution pattern PH formed by a vehicle headlight system according to an example comparative to compare with the vehicle headlamp system 100, or in other words, changes in the time of the brightness of the LEDs illuminating the partial regions PHb to PHf respective. FIG. 6 corresponds to FIG. 4. In the vehicle headlight system according to the comparative example, regardless of whether an LED is to be gradually extinguished or that the brightness of an LED must be gradually reduced to a level at which the LED remains lit at a reduced brightness, the brightness is gradually decreased in a first period tl. On the other hand, when the brightness is to be gradually increased to a level at which the LED is illuminated at an increased brightness, the brightness is gradually increased in a second period t2.
    As can be seen clearly on the timing of the partial regions PHb and PHf in the vehicle headlight system according to the comparative example, when the brightness of an LED must be gradually decreased to a level at which the LED remains lit, the brightness is gradually decreased in a relatively short period of time, as in the case where the brightness of an LED is gradually decreased to a level at which the LED is off. This is why the brightness in an area at the front of the vehicle changes rapidly. In addition, as can be seen clearly in the timing of the partial regions PHc to PHe, in the vehicle headlight system according to the comparative example, when the brightness has to be changed to a level at which an LED is lit, the brightness is changed to achieve target brightness in different times when brightness is increased and brightness is decreased. In particular, the brightness is gradually changed in a relatively short period of time when the brightness is decreased and the brightness is gradually changed in a relatively long period of time when the brightness is increased. That is why the gradual decrease in the brightness of the partial region PHc having started later terminates before the gradual increase of the brightness of the partial region PHe having started previously.
    Advantageous effects of the vehicle headlight system 100 according to the embodiment will be described below, taking into account the above. With the vehicle headlight system 100 according to the embodiment, the headlight control unit 26 selects the first mode when the brightness of an LED 28 is to be gradually decreased to a level at which the LED 28 is off ( i.e., the LED 28 is gradually off). On the other hand, the headlight control unit 26 selects the second mode when the brightness of an LED 28 is to be gradually decreased to a level at which the LED 28 remains on at a reduced brightness. In other words, although the brightness is decreased in both cases, when an LED 28 is turned off, the brightness is gradually changed in a relatively short period of time. Therefore, the glare of the driver of a vehicle in front or of a vehicle in front or of a pedestrian can be suppressed. On the other hand, the brightness is gradually changed in a relatively long period of time when the brightness is gradually decreased to a level at which the LED 28 remains on, thus avoiding a rapid change in brightness in an area at the front of the camera. vehicle as in the case of the comparative example. This improves the comfort for the driver.
    In addition, with the vehicle headlight system 100 according to the embodiment, when the brightness of an LED 28 is to be increased to a level at which the LED 28 remains on at an increased brightness, the control unit The headlight 26 increases the brightness in a period substantially identical to that in which the brightness of an LED 28 is decreased to a level at which the LED 28 remains lit at a reduced brightness. In other words, regardless of whether the brightness is increased or decreased, when the brightness is changed to a level at which an LED 28 remains on, the brightness is gradually changed to reach the target brightness in substantially the same period of time. time. This therefore makes it possible to eliminate a feeling of discomfort that a driver could experience when the brightness is gradually changed to reach the target brightness in different durations, as in the comparative example.
    So far, the present invention has been described on the basis of one embodiment. This embodiment, however, is illustrative only and those skilled in the art will appreciate that various modifications may be made to the combinations of elements and processes of the embodiment and that such modifications are also within the scope of the present invention. . Such modifications will be described below.
    [First amendment]
    In one embodiment, the case where, when the brightness is changed to a level at which an LED is lit, the brightness is controlled to achieve the target brightness in the second period has been described. Alternatively, when the brightness is changed to a level at which an LED is lit while the vehicle is traveling along a curve (i.e., when the steering angle is greater than or equal to a predetermined value ), the brightness can be controlled to achieve the target brightness in a third period, which is longer than the first period and is less than or equal to the second period. In one example, while the vehicle is traveling along a curve, the third period can be 200 ms and the second period can be 200 ms. In other words, while the vehicle is traveling along a curve, brightness can be controlled to achieve the target brightness in a relatively short period of time. In this case, the driving direction can be illuminated more quickly.
    The present invention has been described on the basis of embodiments with the use of specific terms, but the embodiments merely illustrate the principle and applications of the present invention and a number of modifications of the embodiments. and changes in the arrangement may be made within a range that does not depart from the spirit of the present invention defined in the claims.
    A vehicle headlight system according to one aspect of the present invention comprises a headlight unit which can combine light beams from a plurality of light emitting elements to form a traffic light distribution pattern. and a control unit which controls the switching on / off of each of the plurality of light emitting elements. The control unit controls each light emitting element such that its brightness is gradually decreased in a first period when the brightness is decreased to a level at which the light emitting element is turned off and controls each light emitting element so that its brightness is gradually decreased in a second period, longer than the first period, when the brightness is decreased to a level at which the light emitting element remains lit with reduced brightness.
    According to this aspect, although the brightness is gradually decreased in both cases, when the brightness is decreased to a level at which the light emitting element remains lit with a reduced brightness, the brightness is gradually decreased in a longer period than in a case where the brightness is reduced to a level at which the light emitting element is turned off.
    The vehicle headlight system may further comprise a detection unit which detects a vehicle in front. When the detection unit has detected a vehicle in front, the control unit can control, among the plurality of light-emitting elements, a light emitting element which illuminates the vehicle in front so that its brightness is gradually decreased in the first period to a level at which the light emitting element is extinguished. Therefore, when the brightness is decreased to a level at which the light emitting element is turned off when the vehicle ahead is detected, the brightness is gradually decreased in a shorter period of time than in a case in which the brightness is reduced to a level at which the light emitting element remains on with reduced brightness.
    When the brightness of each light emitting element is increased to a level at which the light emitting element is illuminated with increased brightness, the control unit can gradually increase the brightness in a period substantially identical to the second period. . In this case, regardless of whether the brightness is increased or decreased, when the brightness is changed to a level at which the light emitting element is turned on, the brightness is gradually changed in substantially the same period of time.
    When the brightness of each light emitting element is changed to reach a predetermined level at which the light emitting element is turned on while the vehicle is traveling along a curve, the control unit can gradually change the brightness in a third period, which is longer than the first period and is shorter or substantially equal to the second period. In this case, while the vehicle is traveling along a curve, even when the brightness needs to be changed to a level at which the light emitting element is turned on, the brightness is gradually changed in a relatively short period of time.
    Another aspect of the present invention relates to a vehicle headlight. The vehicle headlight includes a headlight unit that can combine light beams from a plurality of light emitting elements to form a high beam light distribution pattern and a steering circuit that turns on / off the plurality of light beams. light emitting elements responsive to a control signal which controls an on / off of each of the plurality of light emitting elements. On the basis of the control signal, the control circuit controls each light emitting element so that its brightness is gradually decreased in a first period when the brightness is decreased to a level at which the light emitting element is extinguished. and controls each light emitting element such that its brightness is gradually decreased in a second period, which is longer than the first period, when the brightness is decreased to a level at which the light emitting element remains lit with reduced brightness.
    According to this aspect, although the brightness is gradually decreased in both cases, when the brightness is decreased to a level at which the light emitting element remains lit with a reduced brightness, the brightness is gradually decreased in a longer period than in a case where the brightness is reduced to a level at which the light emitting element is turned off.
    权利要求:
    Claims (5)
    [1" id="c-fr-0001]
    A vehicle headlight system (100), comprising: a headlight unit (20) configured to combine light beams from a plurality of light emitting elements (28) to form a light distribution pattern driving light; and a control unit (26) which controls the on / off state of each of the plurality of light emitting elements (28), wherein the control unit (26) controls each transmitting element of light (28) so that its brightness is gradually decreased in a first period when the brightness is decreased to a level at which the light emitting element (28) is off and controls each light emitting element (28) so that its brightness is gradually decreased in a second period, longer than the first period, when the brightness is decreased to a level at which the light emitting element (28) remains lit with reduced brightness.
    [2" id="c-fr-0002]
    The vehicle headlight system (100) according to claim 1, further comprising: a detection unit (16) which detects a vehicle ahead, wherein, when the detection unit (16) has detected a vehicle located in front of it, the control unit (26) controls, among the plurality of light emitting elements (28), a light emitting element (28) which illuminates the vehicle in front so that its brightness is gradually decreased in the first period to a level at which the light emitting element (28) is turned off.
    [3" id="c-fr-0003]
    The vehicle headlight system (100) according to claim 1 or 2, wherein when the brightness of each light emitting element (28) is increased to a level at which the light emitting element (28) is illuminated with a increased brightness, the control unit (26) gradually increases the brightness in a period substantially identical to the second period.
    [4" id="c-fr-0004]
    A vehicle headlight system (100) according to any one of claims 1 to 3, wherein, when the brightness of each light emitting element (28) is changed to a predetermined level at which the light emitting element (28) is lit while the vehicle is traveling along a curve, the control unit (26) gradually changes the brightness in a third period longer than the first period and shorter or substantially equal to the second period.
    [5" id="c-fr-0005]
    A vehicle headlight (18), comprising: a headlight unit (20) configured to combine light beams from a plurality of light emitting elements (28) to form a traffic light distribution pattern ; and a driver circuit (30) turning on / off the plurality of light emitting elements (28) in response to a control signal that controls an on / off of each of the plurality of light emitting elements (28). wherein, based on the control signal, the driving circuit (30) controls each light emitting element (28) so that its brightness is gradually decreased in a first period when the brightness is decreased to a level wherein the light emitting element (28) is off and controls each light emitting element (28) so that its brightness is gradually decreased in a second period, which is longer than the first period, when the brightness is decreased to a level at which the light emitting element (28) remains lit with reduced brightness.
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    同族专利:
    公开号 | 公开日
    CN106476679B|2019-03-26|
    JP2017043243A|2017-03-02|
    DE102016115549A1|2017-03-02|
    US10093222B2|2018-10-09|
    JP6215882B2|2017-10-18|
    CN106476679A|2017-03-08|
    US20170057402A1|2017-03-02|
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    CA2953299C|2014-06-23|2019-05-21|Lecip Holdings Corporation|Lighting device|
    JP6544674B2|2015-03-02|2019-07-17|パナソニックＩｐマネジメント株式会社|Lighting device, headlight device and vehicle|
    JP6667154B2|2015-07-09|2020-03-18|パナソニックＩｐマネジメント株式会社|Lighting device, vehicle lighting device, and vehicle using the same|JP2018203215A|2017-06-09|2018-12-27|トヨタ自動車株式会社|In-vehicle light control system, in-vehicle light drive device, in-vehicle light control method and in-vehicle light control program|
    JP6974996B2|2017-09-25|2021-12-01|株式会社小糸製作所|Vehicle lighting|
    CN108237965A|2017-12-06|2018-07-03|天长市天新电子实业有限公司|A kind of intelligence vehicle-mounted LED lamp regulation and control method|
    CN109823371B|2019-04-03|2021-06-18|山东嘉瑞汽车制造有限公司|Vehicle for rail transit|
    法律状态:
    2017-07-14| PLFP| Fee payment|Year of fee payment: 2 |
    2018-07-12| PLFP| Fee payment|Year of fee payment: 3 |
    2019-07-11| PLFP| Fee payment|Year of fee payment: 4 |
    2020-07-10| PLSC| Search report ready|Effective date: 20200710 |
    2020-07-15| PLFP| Fee payment|Year of fee payment: 5 |
    2021-07-15| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2015167921A|JP6215882B2|2015-08-27|2015-08-27|Vehicle lamp and vehicle lamp system|
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