JP7408448B2 - 光源モジュールおよび点灯回路 - Google Patents
光源モジュールおよび点灯回路 Download PDFInfo
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- JP7408448B2 JP7408448B2 JP2020047976A JP2020047976A JP7408448B2 JP 7408448 B2 JP7408448 B2 JP 7408448B2 JP 2020047976 A JP2020047976 A JP 2020047976A JP 2020047976 A JP2020047976 A JP 2020047976A JP 7408448 B2 JP7408448 B2 JP 7408448B2
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- 238000001514 detection method Methods 0.000 claims description 15
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- 238000000034 method Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
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- 239000003990 capacitor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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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
- H05B45/54—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a series array of LEDs
-
- 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]
-
- 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
- B60Q11/005—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00 for lighting devices, e.g. indicating if lamps are burning or not
-
- 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
- F21S43/19—Attachment of light sources or lamp holders
-
- 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]
- H05B45/30—Driver circuits
- H05B45/345—Current stabilisation; Maintaining constant current
-
- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/155—Coordinated control of two or more light sources
-
- 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
- B60Q1/30—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 rear of vehicle, e.g. by means of reflecting surfaces
- B60Q1/303—Rear fog lamps
-
- 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
- B60Q1/44—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 braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
- F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/10—Position lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/35—Brake lights
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
Description
本明細書に開示される一実施の形態は、光源モジュールに関する。光源モジュールは、直列に接続される4個のLED(発光ダイオード)を含むLEDストリングと、バッテリ電圧を受け、LEDストリングに目標電流に安定化された駆動電流を供給するLEDドライバ回路と、LEDストリングのうちの隣接する2個のLEDを含む被バイパス部分と並列に設けられ、バッテリ電圧に応じたバイパス電流をシンクするバイパス回路と、を備える。
以下、本発明を好適な実施の形態をもとに図面を参照しながら説明する。各図面に示される同一または同等の構成要素、部材、処理には、同一の符号を付するものとし、適宜重複した説明は省略する。また、実施の形態は、発明を限定するものではなく例示であって、実施の形態に記述されるすべての特徴やその組み合わせは、必ずしも発明の本質的なものであるとは限らない。
本実施の形態では、断線検出回路630を設け、断線しているときには、バイパス回路620をディセーブルとしてIBYPASS=0とすることにより、バッテリ電圧VBAT(VIN)の電圧レベルにかかわらず、LEDストリングを消灯させておくことができる。
502 LEDストリング
503 被バイパス部分
504 LED
600 点灯回路
602 ダイオード
610 LEDドライバ回路
620 バイパス回路
630 断線検出回路
Claims (9)
- 直列に接続される4個のLED(発光ダイオード)を含むLEDストリングと、
バッテリ電圧を受け、前記LEDストリングに目標電流に安定化された駆動電流を供給するLEDドライバ回路と、
前記LEDストリングのうちの隣接する2個のLEDを含む被バイパス部分と並列に設けられ、前記バッテリ電圧に応じたバイパス電流をシンクするバイパス回路と、
を備え、
前記被バイパス部分に含まれる前記2個のLEDの光量の前記バッテリ電圧の変化に対する傾きは、5%/0.1V以下であることを特徴とする光源モジュール。 - 前記被バイパス部分の断線を検出すると、前記バイパス回路をディセーブルとする断線検出回路をさらに備えることを特徴とする請求項1に記載の光源モジュール。
- 前記断線検出回路は、前記被バイパス部分の電圧降下が、Vf×2を超えると、前記被バイパス部分の断線と判定することを特徴とする請求項2に記載の光源モジュール。
- LEDソケットであることを特徴とする請求項1から3のいずれかに記載の光源モジュール。
- 前記LEDドライバ回路の入力端子とバッテリの間に設けられた逆接保護用のダイオードをさらに備え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光源モジュール。
- 直列に接続される4個のLED(発光ダイオード)を含むLEDストリングを駆動する点灯回路であって、
バッテリ電圧を受け、前記LEDストリングに目標電流に安定化された駆動電流を供給するLEDドライバ回路と、
前記LEDストリングのうちの隣接する2個のLEDを含む被バイパス部分と並列に設けられ、前記バッテリ電圧に応じたバイパス電流をシンクするバイパス回路と、
を備え、
前記バイパス回路がシンクする電流の前記バッテリ電圧の変化に対する傾きは、前記目標電流を100%とするとき、5%/0.1V以下であることを特徴とする点灯回路。 - 前記被バイパス部分の断線を検出すると、前記バイパス回路をディセーブルとする断線検出回路をさらに備えることを特徴とする請求項6に記載の点灯回路。
- 前記断線検出回路は、前記被バイパス部分の電圧降下が、Vf×2を超えると、前記被バイパス部分の断線と判定することを特徴とする請求項7に記載の点灯回路。
- 前記LEDドライバ回路の入力端子とバッテリの間に設けられた逆接保護用のダイオードをさらに備えることを特徴とする請求項6から8のいずれかに記載の点灯回路。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020047976A JP7408448B2 (ja) | 2020-03-18 | 2020-03-18 | 光源モジュールおよび点灯回路 |
EP21771555.6A EP4122766A4 (en) | 2020-03-18 | 2021-03-10 | LIGHT SOURCE MODULE AND LIGHTING CIRCUIT |
CN202180021484.6A CN115299181A (zh) | 2020-03-18 | 2021-03-10 | 光源模块以及点亮电路 |
US17/905,802 US11910504B2 (en) | 2020-03-18 | 2021-03-10 | Light source module and lighting circuit |
PCT/JP2021/009422 WO2021187260A1 (ja) | 2020-03-18 | 2021-03-10 | 光源モジュールおよび点灯回路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020047976A JP7408448B2 (ja) | 2020-03-18 | 2020-03-18 | 光源モジュールおよび点灯回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2021150132A JP2021150132A (ja) | 2021-09-27 |
JP7408448B2 true JP7408448B2 (ja) | 2024-01-05 |
Family
ID=77768243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2020047976A Active JP7408448B2 (ja) | 2020-03-18 | 2020-03-18 | 光源モジュールおよび点灯回路 |
Country Status (5)
Country | Link |
---|---|
US (1) | US11910504B2 (ja) |
EP (1) | EP4122766A4 (ja) |
JP (1) | JP7408448B2 (ja) |
CN (1) | CN115299181A (ja) |
WO (1) | WO2021187260A1 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015168305A (ja) | 2014-03-05 | 2015-09-28 | 株式会社小糸製作所 | 車両用灯具およびその駆動装置 |
JP2019192478A (ja) | 2018-04-25 | 2019-10-31 | 市光工業株式会社 | 車両用灯具 |
JP2020013642A (ja) | 2018-07-13 | 2020-01-23 | 株式会社小糸製作所 | 点灯回路および車両用灯具 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW201401921A (zh) * | 2012-06-26 | 2014-01-01 | Gio Optoelectronics Corp | 發光裝置 |
JP6199721B2 (ja) * | 2013-12-06 | 2017-09-20 | 株式会社小糸製作所 | 車両用灯具 |
DE102014118795A1 (de) * | 2013-12-18 | 2015-06-18 | Panasonic Intellectual Property Management Co., Ltd. | Beleuchtungsbaugruppe und Leuchte |
EP3240368B1 (en) * | 2014-12-24 | 2021-04-07 | Koito Manufacturing Co., Ltd. | Light source lighting circuit and turn signal lamp |
JP6634293B2 (ja) | 2015-04-06 | 2020-01-22 | 株式会社小糸製作所 | 駆動回路、車両用灯具 |
JP6510921B2 (ja) * | 2015-07-17 | 2019-05-08 | ローム株式会社 | チャージポンプ、スイッチ駆動装置、発光装置、車両 |
JP7295869B2 (ja) | 2018-08-27 | 2023-06-21 | 株式会社小糸製作所 | 点灯回路および車両用灯具 |
JP6761010B2 (ja) | 2018-09-14 | 2020-09-23 | ソフトバンク株式会社 | 通信システム |
-
2020
- 2020-03-18 JP JP2020047976A patent/JP7408448B2/ja active Active
-
2021
- 2021-03-10 US US17/905,802 patent/US11910504B2/en active Active
- 2021-03-10 CN CN202180021484.6A patent/CN115299181A/zh active Pending
- 2021-03-10 EP EP21771555.6A patent/EP4122766A4/en active Pending
- 2021-03-10 WO PCT/JP2021/009422 patent/WO2021187260A1/ja unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015168305A (ja) | 2014-03-05 | 2015-09-28 | 株式会社小糸製作所 | 車両用灯具およびその駆動装置 |
JP2019192478A (ja) | 2018-04-25 | 2019-10-31 | 市光工業株式会社 | 車両用灯具 |
JP2020013642A (ja) | 2018-07-13 | 2020-01-23 | 株式会社小糸製作所 | 点灯回路および車両用灯具 |
Also Published As
Publication number | Publication date |
---|---|
WO2021187260A1 (ja) | 2021-09-23 |
EP4122766A1 (en) | 2023-01-25 |
US20230112753A1 (en) | 2023-04-13 |
CN115299181A (zh) | 2022-11-04 |
US11910504B2 (en) | 2024-02-20 |
EP4122766A4 (en) | 2023-07-12 |
JP2021150132A (ja) | 2021-09-27 |
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