WO2020209296A1 - 車両用灯具およびその点灯回路 - Google Patents
車両用灯具およびその点灯回路 Download PDFInfo
- Publication number
- WO2020209296A1 WO2020209296A1 PCT/JP2020/015846 JP2020015846W WO2020209296A1 WO 2020209296 A1 WO2020209296 A1 WO 2020209296A1 JP 2020015846 W JP2020015846 W JP 2020015846W WO 2020209296 A1 WO2020209296 A1 WO 2020209296A1
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- WO
- WIPO (PCT)
- Prior art keywords
- semiconductor light
- light source
- circuit
- lighting
- abnormality detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q11/00—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
- B60Q1/507—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking specific to autonomous vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
- B60Q1/543—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking for indicating other states or conditions of the vehicle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/14—Light emitting diodes [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
Definitions
- the present invention relates to a vehicle lamp used for an automobile or the like.
- Turquoise blue is defined as (0.0292, 0.3775), (0.2050, 0.3775), (0.1965, 0.3380), (0.0370, 0.3380) in the CIExy chromaticity diagram. It is included in the range surrounded by 4 points.
- the present inventor prepared a plurality of light sources having different colors, and examined the generation of turquoise blue by mixing the lights of a plurality of colors. In this case, if an abnormality occurs in any of the light sources, a color different from turquoise blue will be emitted, which in turn will provide incorrect information to the surrounding traffic participants.
- the present invention has been made in such a situation, and one of the exemplary purposes of the embodiment is to provide a vehicle lamp with enhanced safety.
- One aspect of the present invention relates to a lighting circuit for a vehicle lamp having a first semiconductor light source and a second semiconductor light source having different colors and generating light in which two colors are mixed.
- the lighting circuit supplies the first semiconductor light source with the first drive current stabilized to the first target amount and the second semiconductor light source with the second drive current stabilized to the second target amount.
- the operation of the second drive circuit is stopped, and when the non-lighting abnormality of the second semiconductor light source is detected, the first A second abnormality detection circuit for stopping the operation of the drive circuit is provided.
- the protection process for forcibly turning off the other semiconductor light source can be completed inside the lighting circuit.
- the vehicle lighting equipment does not emit light in a color different from the planned color, so that it is possible to prevent presenting incorrect information to surrounding traffic participants, and thus it is possible to improve safety.
- the lighting circuit may notify the controller on the vehicle side when at least one of the first abnormality detection circuit and the second abnormality detection circuit detects a non-lighting abnormality.
- the controller on the vehicle side can notify the user that the lighting fixture for the vehicle has a non-lighting abnormality.
- the vehicle lamp is a turquoise lamp that indicates that autonomous driving is in progress, the user is notified that automatic driving cannot be continued, and the shift to manual driving is encouraged or forced. It is possible to take measures such as switching to manual driving and making an emergency stop of the vehicle.
- the first drive circuit and the second drive circuit may have the same circuit configuration.
- the first abnormality detection circuit and the second abnormality detection circuit may have the same circuit configuration.
- the first abnormality detection circuit and the second abnormality detection circuit respectively, when the voltage between both ends of the corresponding semiconductor light emitting element becomes smaller than the threshold value, or when the current flowing through the corresponding semiconductor light emitting element becomes smaller than the threshold value. It may be determined that the lighting is abnormal. This makes it possible to detect a non-lighting abnormality caused by a short failure or an open failure.
- the first semiconductor light source may be blue, and the second semiconductor light source may be green. In this case, turquoise light can be generated.
- the vehicle lighting equipment may include a first semiconductor light source and a second semiconductor light source having different colors (emission wavelengths), and any of the above-mentioned lighting circuits.
- the vehicle lighting equipment may be an LED socket.
- the "state in which the member A is connected to the member B” means that the member A and the member B are physically directly connected, and the member A and the member B are electrically connected to each other. It also includes the case of being indirectly connected via other members, which does not substantially affect the connection state, or does not impair the functions and effects performed by the combination thereof.
- a state in which the member C is provided between the member A and the member B means that the member A and the member C, or the member B and the member C are directly connected, and their electricity. It also includes the case of being indirectly connected via other members, which does not substantially affect the connection state, or does not impair the functions and effects performed by the combination thereof.
- the reference numerals attached to electric signals such as voltage signals and current signals, or circuit elements such as resistors and capacitors have their respective voltage values, current values, resistance values and capacitance values as required. It shall be represented.
- FIG. 1 is a circuit diagram of a vehicle lamp 200 according to an embodiment.
- the vehicle lighting device 200 is mounted on an autonomous driving vehicle and emits light in turquoise blue, which indicates that the vehicle is being autonomously driven.
- the switch 4 is turned on during the automatic operation, and the DC voltage (input voltage) VIN from the battery 2 is supplied to the vehicle lamp 200.
- the vehicle lamp 200 lights up when the input voltage VIN is supplied.
- the switch 4 is controlled by an ECU (Electronic Control Unit) 6 on the vehicle side.
- ECU Electronic Control Unit
- the vehicle lamp 200 includes a first semiconductor light source 202, a second semiconductor light source 204, and a lighting circuit 300.
- the first semiconductor light source 202 includes one or a plurality of blue semiconductor light emitting elements connected in series.
- the second semiconductor light source 204 includes one or a plurality of green semiconductor light emitting elements connected in series.
- the semiconductor light emitting element is preferably an LED (light emitting diode), but may be an LD (laser diode) or an organic EL (Electro Luminescence) element.
- a preferred aspect of the vehicle lamp 200 is a semiconductor light source that can be replaced with a normal product in the event of a failure such as a disconnection, like a conventional general-purpose light bulb type, and is called an LED socket.
- the vehicle lamp 200 is an LED socket in which a first semiconductor light source 202, a second semiconductor light source 204, a lighting circuit 300, a circuit board and a heat sink (not shown) are housed in one package, and is attached to and detached from a lamp body (not shown). Has a possible shape. Since the LED socket is a consumable item as well as a long life, it is strongly required to reduce the cost.
- the lighting circuit 300 includes a first drive circuit 310, a second drive circuit 320, a first abnormality detection circuit 360, and a second abnormality detection circuit 370.
- the first drive circuit 310 supplies the first semiconductor light source 202 with the first drive current I LED1 stabilized to the first target amount.
- the second drive circuit 320 supplies the second semiconductor light source 204 with the second drive current I LED2 stabilized to the second target amount.
- the non-lighting abnormality may include not only a state in which the first semiconductor light source 202 and the second semiconductor light source 204 are completely turned off, but also a state in which light is emitted with a lower brightness than in a normal state.
- the vehicle lamp 200 is configured to be able to notify the ECU 6 on the vehicle side when at least one of the first abnormality detection circuit 360 and the second abnormality detection circuit 370 detects a non-lighting abnormality.
- the vehicle lamp 200 includes a pin ERR for error notification, and when a non-lighting abnormality occurs, an error signal ERR of a predetermined level (for example, high) is output (assert) from the pin ERR. Note that the assertion of the error signal ERR indicates that both the first semiconductor light source 202 and the second semiconductor light source 204 are off.
- the lighting circuit 300 (vehicle lamp 200) provides a protective process for forcibly turning off the other. ) Can be completed inside.
- the vehicle lighting device 200 does not emit light in a color different from the planned color (turquoise blue in this example) (for example, green or blue), so that it is possible to prevent false information from being presented to surrounding traffic participants. As a result, safety can be improved.
- the lighting circuit 300 decides to notify the ECU 6 on the vehicle side when at least one of the first abnormality detection circuit 360 and the second abnormality detection circuit 370 detects a non-lighting abnormality.
- the ECU 6 can notify the user (driver) that a non-lighting abnormality has occurred in the vehicle lamp 200, and can prompt repair or replacement.
- the vehicle lighting fixture is a turquoise lamp that indicates that autonomous driving is in progress, the user is notified that automatic driving cannot be continued, and the shift to manual driving is encouraged or forced. It is possible to take measures such as switching to manual driving and making an emergency stop of the vehicle.
- the present invention extends to various devices and methods grasped as a block diagram or a cross-sectional view of FIG. 1 or derived from the above description, and is not limited to a specific configuration.
- more specific configuration examples and examples will be described not to narrow the scope of the present invention but to help understanding the essence and operation of the invention and to clarify them.
- FIG. 2 is a circuit diagram of a vehicle lamp 200 according to an embodiment.
- the first drive circuit 310 includes a voltage source 311 and a current source 312.
- the voltage source 311 generates a voltage Vy1 with reference to the input line 302.
- the current source 312 is a current source type driver and a V / I conversion circuit that is connected to the anode of the first semiconductor light source 202 and supplies the first drive current I LED1 proportional to the dimming voltage Vy1.
- the current source 312 includes a resistor R11, a transistor M11, and an error amplifier EA11.
- the target amount I REF1 of the first drive current I LED1 generated by the current source 312 is represented by the equation (1).
- I REF1 Vy1 / R11 ... (1)
- the first drive circuit 310 includes a transistor Q21.
- the transistor Q12 is provided between the gate of the transistor M11 and the input line 302. When the transistor Q21 becomes conductive, the transistor M11 is cut off and the drive current I LED1 is stopped.
- the second drive circuit 320 is configured in the same manner as the first drive circuit 310. Specifically, the second drive circuit 320 includes a voltage source 311 and a current source 322 and a transistor Q22.
- the current source 322 has the same circuit configuration as the current source 312, and the voltage source 321 has the same circuit configuration as the voltage source 311.
- the transistor Q22 corresponds to the transistor Q12.
- the first abnormality detection circuit 360 is configured to be capable of detecting a non-lighting abnormality of the first semiconductor light source 202.
- the first abnormality detection circuit 360 detects a non-lighting abnormality caused by a short-circuit failure (ground fault of the anode) of the first semiconductor light source 202.
- a short-circuit failure occurs, the voltage between the anode and cathode of the first semiconductor light source 202 drops to near zero. Therefore the first abnormality detection circuit 360 includes the voltage across the first semiconductor light source 202 (i.e., anode voltage) to V LED1 short detection comparator COMP11 for comparing the threshold voltage V TH1.
- the output of the short detection comparator COMP11 when the V LED1 ⁇ V TH1, that is, high when not illuminated by a short circuit.
- the first abnormality detection circuit 360 can detect a non-lighting abnormality caused by an open failure of the first semiconductor light source 202.
- an open failure occurs, no current flows through the first semiconductor light source 202. Therefore, when the first drive current I LED1 becomes smaller than the threshold current, the first abnormality detection circuit 360 determines that the failure is open.
- the sense resistor Rs1 is inserted on the path of the first drive current I LED1 .
- Open detection comparator COMP12 is a voltage drop Vs1 of the sense resistor Rs1, is compared with the threshold voltage V TH2. The output of the open detection comparator COMP12 is, becomes high at the time of the Vs1 ⁇ V TH2.
- the outputs of the two comparators COMP11 and COMP12 are combined by an OR gate OR11.
- the transistor Q13 is connected to the base of the transistor Q22, and when an abnormality is detected by the first abnormality detection circuit 360, a collector current flows through the transistor Q13, and the collector current causes the transistor Q22 of the second drive circuit 320 to conduct. Then, the operation of the second drive circuit 320 is stopped, the second drive current I LED2 becomes 0, and the second semiconductor light source 204 is forcibly turned off.
- the second abnormality detection circuit 370 is configured in the same manner as the first abnormality detection circuit 360. Specifically, the second abnormality detection circuit 370 includes a short detection comparator COMP21, an open detection comparator COMP22, a sense resistor Rs2, an OR gate OR21, and a transistor Q23.
- the transistor Q23 becomes conductive, the transistor Q21 of the first drive circuit 310 is turned on, and the operation of the first drive circuit 310 is stopped. , The first drive current I LED1 becomes 0, and the first semiconductor light source 202 is forcibly turned off.
- the vehicle lamp 200 outputs an error signal ERR from the ERR pin.
- the OR gate OR3 takes the logical sum of the outputs of the OR gate OR11 of the first abnormality detection circuit 360 and the OR gate OR21 of the second abnormality detection circuit 370, and outputs the error signal ERR.
- FIG. 3 (a) to 3 (d) are diagrams showing an LED socket which is an example of a vehicle lamp 200.
- FIG. 3A is a perspective view of the appearance of the LED socket 700.
- FIG. 3B shows a front view of the LED socket 700,
- FIG. 3C shows a plan view of the LED socket 700, and
- FIG. 3C shows a bottom view of the LED socket 700.
- the housing 702 has a shape that can be attached to and detached from a lamp body (not shown).
- a plurality of light emitting elements 504 are mounted in the central portion, and they are covered with a transparent cover 704.
- the components of the lighting circuit 300 are mounted on the board 710.
- the plurality of light emitting elements 504 include a blue LED chip that constitutes the first semiconductor light source 202 and a green LED chip that constitutes the second semiconductor light source 204.
- Pins 721, 722, and 723 are exposed on the bottom surface side of the housing 702.
- An input voltage VIN is supplied to the pin 721 via a switch, and a ground voltage is supplied to the pin 722.
- Pin 723 is an error pin for notifying the ECU on the vehicle side of an abnormal state. Pins 721 to 723 penetrate the inside of the housing 702, and one end thereof is connected to the wiring pattern of the substrate 710.
- the configuration for stopping the first drive circuit 310 and the second drive circuit 320 when an abnormality occurs is not limited.
- the first drive circuit 310 and the second drive circuit 320 are configured so that the transistors M11 and M21 are forcibly turned off, but instead, the dimming voltages Vy1 and Vy2 are set to zero. It may be configured in.
- a switch may be inserted in series with the transistors M11 and M21 so that the switch is forcibly turned off.
- a bypass switch may be provided in parallel with the first semiconductor light source 202 and the second semiconductor light source 204, and the bypass switch may be turned on forcibly off.
- the present invention relates to a vehicle lamp used for an automobile or the like.
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- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
Description
IREF1=Vy1/R11 …(1)
実施の形態では、電流ソース型の構成を説明したが、天地を反転して電流シンク型で構成してもよい。
実施の形態では、青色と緑色の混色によるターコイズブルーの光源を説明したが、色の組み合わせはこれに限定されない。
異常発生時に、第1駆動回路310、第2駆動回路320を停止させるための構成は、限定されない。図2では、第1駆動回路310、第2駆動回路320は、トランジスタM11,M21が強制的にオフとなるように構成されたが、それに代えて、調光電圧Vy1,Vy2がゼロとなるように構成されてもよい。あるいはトランジスタM11,M21と直列にスイッチを挿入して、そのスイッチが強制オフするようにしてもよい。あるいは第1半導体光源202、第2半導体光源204と並列にバイパススイッチを設け、バイパススイッチをオンすることにより、強制オフさせてもよい。
図2においてオープン検出のために、センス抵抗Rs1,Rs2を設けたが、それらを省略し、抵抗R11,R21の電圧降下を監視してもよい。
4 スイッチ
6 ECU
200 車両用灯具
202 第1半導体光源
204 第2半導体光源
300 点灯回路
310 第1駆動回路
311 電圧源
312 電流源
320 第2駆動回路
321 電圧源
322 電流源
360 第1異常検出回路
370 第2異常検出回路
Claims (7)
- 色が異なる第1半導体光源および第2半導体光源を有し、2色を混合した光を発生させる車両用灯具用の点灯回路であって、
前記第1半導体光源に第1目標量に安定化された第1駆動電流を供給する第1駆動回路と、
前記第2半導体光源に第2目標量に安定化された第2駆動電流を供給する第2駆動回路と、
前記第1半導体光源の不点灯異常を検出すると、前記第2駆動回路の動作を停止させる第1異常検出回路と、
前記第2半導体光源の不点灯異常を検出すると、前記第1駆動回路の動作を停止させる第2異常検出回路と、
を備えることを特徴とする点灯回路。 - 前記第1異常検出回路と前記第2異常検出回路の少なくとも一方が前記不点灯異常を検出すると、車両側のコントローラに通知することを特徴とする請求項1に記載の点灯回路。
- 前記第1駆動回路と前記第2駆動回路は同じ回路構成を有し、
前記第1異常検出回路と前記第2異常検出回路は同じ回路構成を有することを特徴とする請求項1または2に記載の点灯回路。 - 前記第1異常検出回路および前記第2異常検出回路はそれぞれ、対応する半導体発光素子の両端間電圧がしきい値より小さくなるとき、または対応する半導体発光素子に流れる電流がしきい値より小さくなったときに不点灯異常と判定することを特徴とする請求項3に記載の点灯回路。
- 前記第1半導体光源は青色であり、
前記第2半導体光源は緑色であることを特徴とする請求項1から4のいずれかに記載の点灯回路。 - 色が異なる第1半導体光源および第2半導体光源と、
請求項1から5のいずれかに記載の点灯回路と、
を備えることを特徴とする車両用灯具。 - LEDソケットであることを特徴とする請求項6に記載の車両用灯具。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021513676A JP7313434B2 (ja) | 2019-04-11 | 2020-04-08 | 車両用灯具およびその点灯回路 |
| DE112020001862.8T DE112020001862B4 (de) | 2019-04-11 | 2020-04-08 | Fahrzeugleuchtenanordnung und Leuchtschaltung dafür |
| CN202080027547.4A CN113710537B (zh) | 2019-04-11 | 2020-04-08 | 车辆用灯具及其点亮电路 |
| US17/496,822 US11872932B2 (en) | 2019-04-11 | 2021-10-08 | Lighting circuit for automotive lamp |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-075859 | 2019-04-11 | ||
| JP2019075859 | 2019-04-11 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17/496,822 Continuation US11872932B2 (en) | 2019-04-11 | 2021-10-08 | Lighting circuit for automotive lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020209296A1 true WO2020209296A1 (ja) | 2020-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2020/015846 Ceased WO2020209296A1 (ja) | 2019-04-11 | 2020-04-08 | 車両用灯具およびその点灯回路 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11872932B2 (ja) |
| JP (1) | JP7313434B2 (ja) |
| CN (1) | CN113710537B (ja) |
| DE (1) | DE112020001862B4 (ja) |
| WO (1) | WO2020209296A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2025112307A (ja) * | 2024-01-18 | 2025-07-31 | 大▲衆▼酷翼(北京)科技有限公司 | 車両警告システム及び警告方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7256785B2 (ja) * | 2020-12-02 | 2023-04-12 | 本田技研工業株式会社 | 情報管理装置および情報管理システム |
| EP4201741B1 (en) * | 2021-12-21 | 2025-12-03 | Valeo Vision | Automotive lighting device and automotive vehicle |
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- 2020-04-08 WO PCT/JP2020/015846 patent/WO2020209296A1/ja not_active Ceased
- 2020-04-08 CN CN202080027547.4A patent/CN113710537B/zh active Active
- 2020-04-08 JP JP2021513676A patent/JP7313434B2/ja active Active
- 2020-04-08 DE DE112020001862.8T patent/DE112020001862B4/de active Active
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2021
- 2021-10-08 US US17/496,822 patent/US11872932B2/en active Active
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| JP2012084263A (ja) * | 2010-10-07 | 2012-04-26 | Mitsubishi Electric Corp | 光源点灯装置及び照明器具 |
| CN106274653A (zh) * | 2015-06-05 | 2017-01-04 | 标致·雪铁龙汽车公司 | 转向灯控制设备及其方法 |
| JP2017119449A (ja) * | 2015-12-28 | 2017-07-06 | 株式会社小糸製作所 | 点灯回路、車両用ターンシグナルランプ |
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| JP2025112307A (ja) * | 2024-01-18 | 2025-07-31 | 大▲衆▼酷翼(北京)科技有限公司 | 車両警告システム及び警告方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113710537A (zh) | 2021-11-26 |
| JP7313434B2 (ja) | 2023-07-24 |
| DE112020001862T5 (de) | 2021-12-23 |
| CN113710537B (zh) | 2024-10-29 |
| JPWO2020209296A1 (ja) | 2020-10-15 |
| US11872932B2 (en) | 2024-01-16 |
| US20220030684A1 (en) | 2022-01-27 |
| DE112020001862B4 (de) | 2026-01-15 |
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