专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US10081301B2 Lighting circuit and vehicular turn signal lamp 有权
公开(公告)号：US10081301B2
公开(公告)日：2018-09-25
申请号：US15392675
申请日：2016-12-28
申请人： KOITO MANUFACTURING CO., LTD.
发明人： Shinji Ohta
IPC分类号： H05B37/02 , B60Q11/00 , B60Q1/38 , H05B33/08
CPC分类号： B60Q11/007 , B60Q1/38 , H05B33/0815 , H05B33/0827 , H05B33/083 , H05B33/0845 , H05B33/089
摘要： A lighting circuit for blinking a light-emitting unit having plural light sources is equipped with an abnormality detection unit which generates abnormality information when detecting an abnormality in even one of the plural light sources, and a holding circuit which holds the abnormality information during a period when the lighting circuit is supplied with a blinking signal. The lighting circuit supplies a drive current(s) to the plural light sources according to the blinking signal and stops supplying a drive current(s) to all of the plural light sources according to the abnormality information being held by the holding circuit.

2. 发明申请

US20150158414A1 VEHICULAR LAMP 有权
标题翻译：车灯
公开(公告)号：US20150158414A1
公开(公告)日：2015-06-11
申请号：US14561829
申请日：2014-12-05
申请人： KOITO MANUFACTURING CO., LTD.
发明人： Shinji Ohta
IPC分类号： B60Q1/00
CPC分类号： B60Q1/00 , B60Q1/12 , B60Q1/20 , H05B33/083 , H05B33/0842 , H05B37/0209
摘要： A vehicular lamp has a light-emitting portion connected in series to an input terminal to which a power supply voltage based on an on-board battery is configured to be applied, and having a plurality of light-emitting elements connected in series, a series connection circuit having a first current limiting resistor and a second current limiting resistor, which is inserted in series between the input terminal and the light-emitting portion, a resistor switching switch connected in parallel to one of the first current limiting resistor and the second current limiting resistor, bypass switches, each of which is connected in parallel to a required one of the light-emitting elements in the light-emitting portion, and a control circuit that turns off the resistor switching switch when at least one of the bypass switches is turned on.
摘要翻译：车灯具有串联连接到输入端子的发光部分，其中构成基于车载电池的电源电压被配置为被施加，并且具有串联连接的多个发光元件，连接电路，其具有串联地插入在所述输入端子和所述发光部分之间的第一限流电阻器和第二限流电阻器，并联连接到所述第一限流电阻器和所述第二电流器中的一个的电阻器开关开关限制电阻器，旁路开关，每个旁路开关并联连接到发光部分中所需的一个发光元件;以及控制电路，当至少一个旁路开关为打开。

3. 发明申请

US20180242421A1 LIGHT SOURCE DRIVE DEVICE AND VEHICLE LAMP 审中-公开
公开(公告)号：US20180242421A1
公开(公告)日：2018-08-23
申请号：US15894144
申请日：2018-02-12
申请人： Koito Manufacturing Co., Ltd.
发明人： Shinji Ohta , Katsuya Fukuta
IPC分类号： H05B33/08
CPC分类号： H05B33/0854 , B60Q2300/146 , H05B33/0815 , H05B33/0824 , H05B33/0848 , H05B33/0887 , H05B41/2828
摘要： Provided is a light source drive device including: a current supply device; and a light source device including a light emitting element that emits light by receiving drive current supplied from the current supply device, a temperature sensor that performs temperature detection at a position closer to the light emitting element than the current supply device, and a signal generation unit that outputs a control signal for controlling the drive current depending on a detected value of the temperature sensor to the current supply device. The signal generation unit generates a control signal for reducing the drive current depending on a temperature when the temperature detected by the temperature sensor is equal to or higher than a predetermined temperature.

4. 发明授权

US11325528B2 Rear turn lamp 有权
公开(公告)号：US11325528B2
公开(公告)日：2022-05-10
申请号：US17077478
申请日：2020-10-22
申请人： KOITO MANUFACTURING CO., LTD.
发明人： Yuichi Miyashita , Masashi Yamazaki , Toshikazu Tomono , Shinji Ohta
IPC分类号： B60Q1/30 , B60Q1/34 , B60Q1/26 , B60Q1/38
摘要： A rear turn lamp has a structure formed of divided components, i.e., a first lamp unit provided to a fixed portion of a vehicle body and a second lamp unit provided to a movable portion of the vehicle body. The first lamp unit is provided with a controller. A first lighting circuit turns on multiple first light sources. A second lighting circuit turns on multiple second light sources.

5. 发明授权

US10306725B2 Light source drive device and vehicle lamp 有权
公开(公告)号：US10306725B2
公开(公告)日：2019-05-28
申请号：US15894144
申请日：2018-02-12
申请人： Koito Manufacturing Co., Ltd.
发明人： Shinji Ohta , Katsuya Fukuta
IPC分类号： H05B33/08 , H05B41/282
摘要： Provided is a light source drive device including: a current supply device; and a light source device including a light emitting element that emits light by receiving drive current supplied from the current supply device, a temperature sensor that performs temperature detection at a position closer to the light emitting element than the current supply device, and a signal generation unit that outputs a control signal for controlling the drive current depending on a detected value of the temperature sensor to the current supply device. The signal generation unit generates a control signal for reducing the drive current depending on a temperature when the temperature detected by the temperature sensor is equal to or higher than a predetermined temperature.

6. 发明授权

US09974128B2 Light source lighting circuit and turn signal lamp 有权
公开(公告)号：US09974128B2
公开(公告)日：2018-05-15
申请号：US15539237
申请日：2015-12-16
申请人： KOITO MANUFACTURING CO., LTD.
发明人： Shinji Ohta , Masahiro Sawada
IPC分类号： B60Q1/38 , H05B33/08
CPC分类号： H05B33/0815 , B60Q1/34 , B60Q1/382 , H05B33/0827 , H05B33/089 , H05B37/02
摘要： A light source lighting circuit comprises a first lighting circuit for receiving current from the electric power supply line and supplying drive current to a first light source and a second lighting circuit for receiving the current from the electric power supply line and supplying drive current to a second light source. When a state of the drive current flowing to the first light source shows an abnormality, or when state of the drive current flowing to the second light source shows an abnormality, the first lighting circuit stops operation. When a state of the drive current flowing to the second light source shows an abnormality, or when a state of the drive current flowing to the first light source shows an abnormality, the second lighting circuit stops operation.

7. 发明申请

US20180049286A1 LIGHTING CIRCUIT AND VEHICULAR LAMP 审中-公开
公开(公告)号：US20180049286A1
公开(公告)日：2018-02-15
申请号：US15659937
申请日：2017-07-26
申请人： Koito Manufacturing Co., Ltd.
发明人： Kotaro Matsui , Yasushi Noyori , Shinji Ohta
IPC分类号： H05B33/08
CPC分类号： H05B33/0842 , B60Q1/1407 , H05B33/0824 , H05B33/0827 , H05B33/083 , H05B33/0845
摘要： Provided is a lighting circuit that drives a first light source and a second light source connected in series with each other. A bypass switch is provided in parallel with the second light source. A constant current circuit is connected in parallel with one of the first light source and the second light source. A drive circuit supplies a drive current to a serially-connected circuit of the first light source and the second light source.

8. 发明申请

US20170182941A1 LIGHTING CIRCUIT AND VEHICULAR TURN SIGNAL LAMP 审中-公开
公开(公告)号：US20170182941A1
公开(公告)日：2017-06-29
申请号：US15392675
申请日：2016-12-28
申请人： KOITO MANUFACTURING CO., LTD.
发明人： Shinji Ohta
IPC分类号： B60Q11/00 , H05B33/08 , B60Q1/38
CPC分类号： B60Q11/007 , B60Q1/38 , H05B33/0815 , H05B33/0827 , H05B33/083 , H05B33/0845 , H05B33/089
摘要： A lighting circuit for blinking a light-emitting unit having plural light sources is equipped with an abnormality detection unit which generates abnormality information when detecting an abnormality in even one of the plural light sources, and a holding circuit which holds the abnormality information during a period when the lighting circuit is supplied with a blinking signal, The lighting circuit supplies a drive current(s) to the plural light sources according to the blinking signal and stops supplying a drive current(s) to all of the plural light sources according to the abnormality information being held by the holding circuit.

9. 发明授权

US09162607B2 Vehicular lamp 有权
标题翻译：车灯
公开(公告)号：US09162607B2
公开(公告)日：2015-10-20
申请号：US14561829
申请日：2014-12-05
申请人： KOITO MANUFACTURING CO., LTD.
发明人： Shinji Ohta
IPC分类号： H05B37/02 , B60Q1/00
CPC分类号： B60Q1/00 , B60Q1/12 , B60Q1/20 , H05B33/083 , H05B33/0842 , H05B37/0209
摘要： A vehicular lamp has a light-emitting portion connected in series to an input terminal to which a power supply voltage based on an on-board battery is configured to be applied, and having a plurality of light-emitting elements connected in series, a series connection circuit having a first current limiting resistor and a second current limiting resistor, which is inserted in series between the input terminal and the light-emitting portion, a resistor switching switch connected in parallel to one of the first current limiting resistor and the second current limiting resistor, bypass switches, each of which is connected in parallel to a required one of the light-emitting elements in the light-emitting portion, and a control circuit that turns off the resistor switching switch when at least one of the bypass switches is turned on.
摘要翻译：车灯具有串联连接到输入端子的发光部分，其中构成基于车载电池的电源电压被配置为被施加，并且具有串联连接的多个发光元件，连接电路，其具有串联地插入在所述输入端子和所述发光部分之间的第一限流电阻器和第二限流电阻器，并联连接到所述第一限流电阻器和所述第二电流器中的一个的电阻器开关开关限制电阻器，旁路开关，每个旁路开关并联连接到发光部分中所需的一个发光元件;以及控制电路，当至少一个旁路开关为打开。

10. 发明授权

US11382194B2 Lighting circuit 有权
公开(公告)号：US11382194B2
公开(公告)日：2022-07-05
申请号：US17032024
申请日：2020-09-25
申请人： KOITO MANUFACTURING CO., LTD.
发明人： Shinji Ohta
IPC分类号： H05B45/14 , F21V23/00 , H02M3/06 , H05B45/30 , F21Y115/10 , H05B45/50
摘要： A driving circuit turns on and off a driving current ILED that flows through a light source, so as to control the lighting on/off state of the light source. A judgment circuit compares a voltage VLED across the light source with a threshold value, and judges the lighting on/off state of the light source based on the comparison result. A first resistor R is provided in parallel with the light source.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式