JP5042798B2 - 車両用灯具の点灯制御装置 - Google Patents
車両用灯具の点灯制御装置 Download PDFInfo
- Publication number
- JP5042798B2 JP5042798B2 JP2007324788A JP2007324788A JP5042798B2 JP 5042798 B2 JP5042798 B2 JP 5042798B2 JP 2007324788 A JP2007324788 A JP 2007324788A JP 2007324788 A JP2007324788 A JP 2007324788A JP 5042798 B2 JP5042798 B2 JP 5042798B2
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- semiconductor light
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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
-
- 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]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
- H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
-
- 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
-
- 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
Description
Claims (4)
- 第1〜第N(Nは1以上の整数)の半導体光源へ駆動電流を供給するスイッチングレギュレータと、
それぞれ前記各半導体光源に直列に接続され前記駆動電流を検出する第1〜第Nの電流検出部と、それぞれ前記各半導体光源の正極側に接続された第1〜第Nのスイッチ部と、それぞれ前記各電流検出部によって検出された前記駆動電流の値と予め決められた閾値とを比較して得られた比較結果に応じた比較出力を送出する第1〜第Nの比較部とを含み、それぞれ前記比較出力に応じて前記各スイッチ部の動作を行う第1〜第Nの電流駆動手段と、
それぞれ前記各比較部の出力側における電圧を検出し第1〜第Nの第1検出結果を送出する第1〜第Nの第1電圧降下検出部と、それぞれ前記各半導体光源の正極側における電圧を検出し第1〜第Nの第2検出結果を送出する第1〜第Nの第2電圧降下検出部とを含む制御手段とを有し、
前記制御手段は、それぞれ前記第1〜第Nの第1検出結果及び前記第1〜第Nの第2検出結果に応じて前記第1〜第Nの電流駆動手段を制御し、
前記第1〜第Nの半導体光源のうち少なくとも1つの半導体光源のアノード側が地絡する異常状態になった場合、アノード側が地絡した半導体光源に接続された前記スイッチ部がオフ動作の状態になり、アノード側が地絡した半導体光源のみ駆動電流の供給が停止される
ことを特徴とする車両用灯具の点灯制御装置。 - 前記第1〜第Nの電流検出部がそれぞれ前記第1〜第Nの半導体光源の負極側に直列に接続されている
ことを特徴とする請求項1に記載の車両用灯具の点灯制御装置。 - 前記第1〜第Nの電流検出部で検出された駆動電流はそれぞれ前記第1〜第Nの比較部の反転入力に入力され、
前記制御手段は、前記各半導体光源の出力異常が生じたときに前記第1検出結果及び第2検出結果を受け、対応する前記スイッチ部がオフ動作を行うように前記比較部の比較出力を制御する
ことを特徴とする請求項1に記載の車両用灯具の点灯制御装置。 - 前記第1〜第Nの電流検出部がそれぞれ前記第1〜第Nの半導体光源の正極側に直列に接続されている
ことを特徴とする請求項3に記載の車両用灯具の点灯制御装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007324788A JP5042798B2 (ja) | 2007-12-17 | 2007-12-17 | 車両用灯具の点灯制御装置 |
CN2008101780062A CN101466184B (zh) | 2007-12-17 | 2008-12-08 | 车辆用灯具的点灯控制装置 |
US12/335,085 US7964988B2 (en) | 2007-12-17 | 2008-12-15 | Lighting controller of lighting device for vehicle |
KR1020080127134A KR101059182B1 (ko) | 2007-12-17 | 2008-12-15 | 차량용 등기구의 점등 제어 장치 |
DE602008005830T DE602008005830D1 (de) | 2007-12-17 | 2008-12-16 | Beleuchtungssteuerung für eine Fahrzeugbeleuchtungsvorrichtung |
EP08021810A EP2073605B1 (en) | 2007-12-17 | 2008-12-16 | Lighting controller of lighting device for vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007324788A JP5042798B2 (ja) | 2007-12-17 | 2007-12-17 | 車両用灯具の点灯制御装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009146813A JP2009146813A (ja) | 2009-07-02 |
JP5042798B2 true JP5042798B2 (ja) | 2012-10-03 |
Family
ID=40416754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007324788A Expired - Fee Related JP5042798B2 (ja) | 2007-12-17 | 2007-12-17 | 車両用灯具の点灯制御装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7964988B2 (ja) |
EP (1) | EP2073605B1 (ja) |
JP (1) | JP5042798B2 (ja) |
KR (1) | KR101059182B1 (ja) |
CN (1) | CN101466184B (ja) |
DE (1) | DE602008005830D1 (ja) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5006180B2 (ja) * | 2007-12-27 | 2012-08-22 | 株式会社小糸製作所 | 車両用灯具の点灯制御装置 |
KR101677730B1 (ko) * | 2009-08-14 | 2016-11-30 | 페어차일드코리아반도체 주식회사 | Led 발광 장치 |
TWI491311B (zh) * | 2009-12-30 | 2015-07-01 | Hon Hai Prec Ind Co Ltd | Led照明系統及其控制方法 |
JP2012155893A (ja) * | 2011-01-24 | 2012-08-16 | Nec Lighting Ltd | 電源回路および照明装置 |
US9180809B2 (en) * | 2011-02-16 | 2015-11-10 | Honda Motor Co., Ltd. | Vehicle LED lighting device |
DE102012109724A1 (de) * | 2011-10-18 | 2013-04-18 | Samsung Electronics Co. Ltd. | Leistungsversorgungsvorrichtung und Treibervorrichtung |
DE102012109722A1 (de) * | 2011-10-18 | 2013-04-18 | Samsung Electronics Co. Ltd. | Lichtabgebende Vorrichtung und dieselbe verwendendes LED-Treiberverfahren |
US9491838B2 (en) * | 2012-01-26 | 2016-11-08 | Texas Instruments Incorporated | LED matrix manager |
CN104244492B (zh) * | 2012-04-07 | 2016-11-23 | 吴槐 | Led工作模式控制装置 |
US9374862B2 (en) * | 2012-11-13 | 2016-06-21 | Chih-Yuan Huang | Circuit for vehicle lamps |
JP6051909B2 (ja) * | 2013-02-12 | 2016-12-27 | 株式会社デンソー | 電力供給装置 |
FR3002809B1 (fr) * | 2013-03-04 | 2016-08-26 | Diam Int Sas | Presentoir de produits eclaire a organes de protection contre une surintensite electrique |
US9578728B2 (en) * | 2013-06-18 | 2017-02-21 | Dialight Corporation | Long life, fail safe traffic light |
JP6259649B2 (ja) * | 2013-12-06 | 2018-01-10 | 株式会社小糸製作所 | 車両用灯具 |
JP6799939B2 (ja) * | 2016-04-22 | 2020-12-16 | ローム株式会社 | 発光素子駆動用半導体集積回路、発光素子駆動装置、発光装置、車両 |
JP6721215B2 (ja) * | 2016-10-14 | 2020-07-08 | パナソニック株式会社 | 点灯装置 |
NL2018081B1 (en) * | 2016-12-27 | 2018-07-03 | Eldolab Holding Bv | Light source power supply |
CN111903193B (zh) * | 2018-03-28 | 2024-02-06 | 株式会社小糸制作所 | 点灯电路及车辆用灯具 |
CN114267289A (zh) * | 2021-12-31 | 2022-04-01 | 深圳市中科创激光技术有限公司 | 一种灯具温度监控方法及其相关设备 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000033729A (ja) | 1998-07-16 | 2000-02-02 | Hitachi Cable Ltd | 発光ダイオードアレイ |
JP2004009825A (ja) * | 2002-06-05 | 2004-01-15 | Koito Mfg Co Ltd | 車両用灯具装置 |
JP4256136B2 (ja) * | 2002-10-01 | 2009-04-22 | 株式会社小糸製作所 | 車両用灯具 |
JP4148908B2 (ja) | 2004-02-16 | 2008-09-10 | 株式会社小糸製作所 | 車両用灯具 |
EP1608206B1 (en) * | 2004-06-14 | 2009-08-12 | STMicroelectronics S.r.l. | Led driving device with variable light intensity |
DE102004045435B4 (de) | 2004-09-18 | 2008-07-31 | Man Nutzfahrzeuge Ag | Überwachung der Funktion von Glühlampen oder LED-Leuchten in Kraftfahrzeugen |
JP4400880B2 (ja) * | 2004-10-05 | 2010-01-20 | 株式会社小糸製作所 | 車両用灯具の点灯制御回路 |
JP4519613B2 (ja) * | 2004-11-16 | 2010-08-04 | 三菱電機株式会社 | Led点灯装置 |
JP2006210219A (ja) * | 2005-01-31 | 2006-08-10 | Koito Mfg Co Ltd | 車両用灯具の点灯制御回路 |
JP4398411B2 (ja) | 2005-07-12 | 2010-01-13 | 株式会社小糸製作所 | 車両用灯具の点灯制御装置 |
JP2007157423A (ja) * | 2005-12-02 | 2007-06-21 | Stanley Electric Co Ltd | 電源装置 |
JP4172501B2 (ja) * | 2006-05-31 | 2008-10-29 | ソニー株式会社 | 発光ダイオード点灯回路、照明装置及び液晶表示装置 |
JP2009184592A (ja) | 2008-02-08 | 2009-08-20 | Koito Mfg Co Ltd | 車両用灯具の点灯制御装置 |
-
2007
- 2007-12-17 JP JP2007324788A patent/JP5042798B2/ja not_active Expired - Fee Related
-
2008
- 2008-12-08 CN CN2008101780062A patent/CN101466184B/zh not_active Expired - Fee Related
- 2008-12-15 US US12/335,085 patent/US7964988B2/en not_active Expired - Fee Related
- 2008-12-15 KR KR1020080127134A patent/KR101059182B1/ko not_active IP Right Cessation
- 2008-12-16 EP EP08021810A patent/EP2073605B1/en not_active Expired - Fee Related
- 2008-12-16 DE DE602008005830T patent/DE602008005830D1/de active Active
Also Published As
Publication number | Publication date |
---|---|
US20090153059A1 (en) | 2009-06-18 |
DE602008005830D1 (de) | 2011-05-12 |
EP2073605A1 (en) | 2009-06-24 |
CN101466184B (zh) | 2012-07-04 |
US7964988B2 (en) | 2011-06-21 |
CN101466184A (zh) | 2009-06-24 |
JP2009146813A (ja) | 2009-07-02 |
KR101059182B1 (ko) | 2011-08-25 |
EP2073605B1 (en) | 2011-03-30 |
KR20090065442A (ko) | 2009-06-22 |
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