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. 发明专利

DE102016226260A1 Beleuchtungsschaltung und Fahrzeug-Abbiegesignallampe 未知
公开(公告)号：DE102016226260A1
公开(公告)日：2017-06-29
申请号：DE102016226260
申请日：2016-12-28
申请人： KOITO MFG CO LTD
发明人： OHTA SHINJI
IPC分类号： H05B44/00 , B60Q11/00
摘要： Eine Beleuchtungsschaltung zum Blinkenlassen einer Lichtemissionseinheit mit mehreren Lichtquellen wird mit einer Abnormalitäts-Detektionseinheit, die Abnormalitäts-Information erzeugt, wenn eine Abnormalität in selbst einer der mehreren Lichtquellen detektiert wird, und einer Halteschaltung, welche die Abnormalitäts-Information während einer Periode hält, wenn die Beleuchtungsschaltung mit einem Blinksignal beliefert wird, versehen. Die Beleuchtungsschaltung liefert einen Antriebsstrom (Ströme) gemäß dem Blinksignal an die mehreren Lichtquellen und stoppt das Zuführen eines Antriebsstroms (Ströme) an alle der mehreren Lichtquellen gemäß der durch die Halteschaltung gehaltenen Abnormalitäts-Information.

2. 发明专利

FR2905554A1 CIRCUIT D'ALLUMAGE DE LAMPE A DECHARGE. 未知
公开(公告)号：FR2905554A1
公开(公告)日：2008-03-07
申请号：FR0756640
申请日：2007-07-20
申请人： KOITO MFG CO LTD
发明人： OHTA SHINJI , ICHIKAWA TOMOYUKI
IPC分类号： H05B41/28
摘要： Un circuit d'allumage comporte un condensateur (17) et une inductance (19) pour former un circuit résonant, et une première sortie (21), une seconde sortie (23), une résistance (25) et un circuit de contrôle. Un circuit convertisseur continu-alternatif (13) génère une tension alternative à partir d'une tension continue. La résistance (25) a une extrémité connectée à la seconde sortie (23) et l'autre extrémité connectée à une extrémité d'un enroulement secondaire (33). Une sortie de contrôle est connectée à l'autre extrémité de la résistance (25), et est prévue pour fournir un signal pour contrôler un courant circulant dans une lampe à décharge (30). L'extrémité de la résistance (25) est connectée à un conducteur de masse GND. Le circuit de contrôle reçoit un signal depuis la sortie de contrôle. Le circuit de contrôle génère un signal pour contrôler un courant IL circulant dans la lampe à décharge (30).

3. 发明专利

DE10310764A1 Discharge lamp starter circuit limits current flowing through switching element connected to transformer when output from DC-DC converter increases 未知
公开(公告)号：DE10310764A1
公开(公告)日：2003-10-09
申请号：DE10310764
申请日：2003-03-12
申请人： KOITO MFG CO LTD
发明人： ITO MASAYASU , OHTA SHINJI
IPC分类号： H05B41/282 , H02M3/28 , H05B41/285 , H05B41/288 , H05B41/292
摘要： The circuit has a voltage-resonance structure including a transformer and switching element forming a DC-DC converter (4). A voltage control circuit controls the on/off switching of the switching element so that the output from the DC-DC converter is at a desired voltage, and current limitation is provided. The higher the output voltage, the more the current flowing through the switching element is reduced.

4. 发明专利

DE102007034008A1 未知
公开(公告)号：DE102007034008A1
公开(公告)日：2008-01-31
申请号：DE102007034008
申请日：2007-07-20
申请人： KOITO MFG CO LTD
发明人： OHTA SHINJI , ICHIKAWA TOMOYUKI
IPC分类号： H05B41/288 , H05B41/36
摘要： A lighting circuit includes a capacitor and inductor for a resonance, and a first output, a second output, a resistor and a monitor circuit. A DC-AC converting circuit generates an AC voltage from a DC voltage. The resistor has an end connected to the second output and the other end connected to an end of a secondary winding. A monitoring output is connected to the other end of the resistor, and is provided for providing a signal for monitoring a current flowing to a discharge lamp. The end of the resistor is connected to a grounding conductor GND. The monitor circuit receives a signal from the monitoring output. The monitor circuit generates a signal for monitoring a current IL flowing to the discharge lamp.

5. 发明专利

DE10309189B4 未知
公开(公告)号：DE10309189B4
公开(公告)日：2006-04-20
申请号：DE10309189
申请日：2003-03-03
申请人： KOITO MFG CO LTD
发明人： ICHIKAWA TOMOYUKI , OHTA SHINJI
IPC分类号： H02M3/28 , H02M3/335 , H05B41/288
摘要： The chopper circuit has a transformer (10) with a switch (11) in its primary. The time interval between the moment where the transformer secondary current (10s) reaches zero and the moment where the transformer primary current (10p) starts to circulate is detected, and the switching frequency is adapted to reduce this interval.

6. 发明专利

FR2875096A1 CIRCUIT DE DETECTION DE CRETE ET DISPOSITIF D'ECLAIRAGE A LAMPE A DECHARGE 未知
公开(公告)号：FR2875096A1
公开(公告)日：2006-03-10
申请号：FR0508990
申请日：2005-09-02
申请人： KOITO MFG CO LTD
发明人： ICHIKAWA TOMOYUKI , OHTA SHINJI
IPC分类号： H05B41/285 , G01R19/175
摘要： Un circuit de détection de crête 1 comprend un amplificateur opérationnel 2, une pluralité de transistors 3 et 4 devant être mis en oeuvre à la réception d'un signal de sortie, et un condensateur de maintien 5. Les transistors 3 et 4 sont utilisés en émetteurs-suiveurs ou en sources-suiveuses, et le signal de sortie du transistor 3 est appliqué en entrée à l'amplificateur opérationnel 2 en vue de l'obtention d'une contre-réaction négative et le signal de sortie du transistor 3 est fourni au condensateur 5. En outre, une résistance de décharge est disposée en parallèle du condensateur 5 pour fournir intentionnellement un affaissement du sommet. En conséquence, il est possible de suivre une variation de la crête d'un signal d'entrée qui est momentanément modifiée.

7. 发明专利

DE102004039223A1 未知
公开(公告)号：DE102004039223A1
公开(公告)日：2005-03-17
申请号：DE102004039223
申请日：2004-08-12
申请人： KOITO MFG CO LTD
发明人： OHTA SHINJI , ITO MASAYASU
IPC分类号： H05B41/24 , H05B37/03 , H05B41/28 , H05B41/288 , H05B41/292
摘要： The lighting circuit (6) has a current and voltage detection devices (12, 13) detecting current and voltage in a discharge lamp, respectively. A determination device (25) detects a state of the lamp based on values detected by the devices (12, 13). The state is detected when an absolute value of a difference between the values detected during a switched off state is greater than the corresponding value detected in a switched on state.

8. 发明专利

FR2858906A1 未知
公开(公告)号：FR2858906A1
公开(公告)日：2005-02-18
申请号：FR0408884
申请日：2004-08-13
申请人： KOITO MFG CO LTD
发明人： OHTA SHINJI , ITO MASAYASU
IPC分类号： H05B41/24 , H05B41/18 , H05B41/288 , H05B41/38 , H05B41/28 , H02M7/5383
摘要： A discharge lamp illumination circuit 1 has a DC-AC conversion circuit 3 , which effects DC-AC conversion and boosting upon receipt of a DC input, and a starter circuit 4 . Power output from the DC-AC conversion circuit 3 is controlled by means of control means 6 . The DC-AC conversion circuit 3 has an AC conversion transformer 7 ; a plurality of switching elements 5 H and 5 L; and a resonance capacitor 8 . The switching elements are activated by the control means 6 , thereby causing serial resonance between the resonance capacitor 8 and a leakage inductance component of the AC conversion transformer 7 , or between the resonance capacitor 8 and an inductance component 9 connected to the resonance capacitor 8 . Provided that a resonance frequency achieved during an extinction period of the discharge lamp 10 is denoted as f 1 , the operating frequency is first regulated to a frequency level deviating from f 1 and then gradually reduced so as to approach f 1 in connection with a no-load voltage which is applied to the discharge lamp before illuminating.

9. 发明专利

FR2855920A1 未知
公开(公告)号：FR2855920A1
公开(公告)日：2004-12-10
申请号：FR0406048
申请日：2004-06-04
申请人： KOITO MFG CO LTD
发明人： ICHIKAWA TOMOYUKI , OHTA SHINJI
IPC分类号： H02M3/28 , H02M3/156 , H02M3/335 , H05B41/282 , H05B41/288 , H02M7/48
摘要： In a fly-back DC voltage conversion circuit, a transformer accumulates energy during the on-state of a switching element, and the accumulated energy is outputted from a secondary winding during the off-state of the switching element. The switching element is placed in the on-state when the accumulated energy is completely outputted from the secondary winding. A voltage applied to the switching element is differentiated by a capacitor to detect a discharge termination point at which the current of the transformer becomes zero to change a switching frequency of the switching element. The DC voltage conversion circuit can attain control in a current boundary state without significantly increasing cost.

10. 发明专利

DE10309189A1 未知
公开(公告)号：DE10309189A1
公开(公告)日：2003-12-04
申请号：DE10309189
申请日：2003-03-03
申请人： KOITO MFG CO LTD
发明人： ICHIKAWA TOMOYUKI , OHTA SHINJI
IPC分类号： H02M3/335 , H02M3/28 , H05B41/288
摘要： The chopper circuit has a transformer (10) with a switch (11) in its primary. The time interval between the moment where the transformer secondary current (10s) reaches zero and the moment where the transformer primary current (10p) starts to circulate is detected, and the switching frequency is adapted to reduce this interval.

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