FR3025868B1 - Circuit d'eclairage et lampe pour vehicule le comportant - Google Patents

Circuit d'eclairage et lampe pour vehicule le comportant Download PDF

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Publication number
FR3025868B1
FR3025868B1 FR1558696A FR1558696A FR3025868B1 FR 3025868 B1 FR3025868 B1 FR 3025868B1 FR 1558696 A FR1558696 A FR 1558696A FR 1558696 A FR1558696 A FR 1558696A FR 3025868 B1 FR3025868 B1 FR 3025868B1
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FR
France
Prior art keywords
overcurrent protection
light source
circuit
current
lamp
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.)
Active
Application number
FR1558696A
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English (en)
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FR3025868A1 (fr
Inventor
Tomoyuki Ichikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koito Manufacturing Co Ltd
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Koito Manufacturing Co Ltd
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Publication date
Priority claimed from JP2015147799A external-priority patent/JP6591814B2/ja
Application filed by Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
Publication of FR3025868A1 publication Critical patent/FR3025868A1/fr
Application granted granted Critical
Publication of FR3025868B1 publication Critical patent/FR3025868B1/fr
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Classifications

    • 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
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/38—Switched mode power supply [SMPS] using boost topology
    • 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
    • B60Q1/0088—Details of electrical connections
    • 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
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • 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
    • 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
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/39—Circuits containing inverter bridges
    • 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
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/25—Circuit arrangements for protecting against overcurrent
    • 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]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

Un circuit d'éclairage (10) pour une source de lumière (2) comporte un circuit d'attaque (20) et un circuit de protection contre les surintensités (30). Le circuit d'attaque délivre de l'énergie à la source de lumière. Le circuit de protection contre les surintensités est inséré entre le circuit d'attaque et la source de lumière. Le circuit de protection contre les surintensités limite le courant de lampe circulant dans la source de lumière de sorte que le courant de lampe ne dépasse pas une valeur de seuil de surintensité. Le circuit de protection contre les surintensités (30) comporte un transistor (M31), une bobine d'induction (L31), un redresseur (D31), un détecteur de courant (32) et un contrôleur de protection contre les surintensités (34). Le détecteur de courant génère un signal de détection de courant en fonction du courant de lampe. Le contrôleur de protection contre les surintensités commande l'état PASSANT/BLOQUÉ du transistor en se basant sur le signal de détection de courant et sur la valeur de seuil de surintensité. Le transistor, la bobine d'induction et le redresseur sont disposés en forme de T.
FR1558696A 2014-09-16 2015-09-16 Circuit d'eclairage et lampe pour vehicule le comportant Active FR3025868B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2014187991 2014-09-16
JP2014263103 2014-12-25
JP2015147799A JP6591814B2 (ja) 2014-09-16 2015-07-27 点灯回路およびそれを用いた車両用灯具

Publications (2)

Publication Number Publication Date
FR3025868A1 FR3025868A1 (fr) 2016-03-18
FR3025868B1 true FR3025868B1 (fr) 2020-10-30

Family

ID=55406295

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1558696A Active FR3025868B1 (fr) 2014-09-16 2015-09-16 Circuit d'eclairage et lampe pour vehicule le comportant

Country Status (4)

Country Link
US (2) US9907151B2 (fr)
CN (2) CN105472834B (fr)
DE (2) DE102015217712B4 (fr)
FR (1) FR3025868B1 (fr)

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Also Published As

Publication number Publication date
DE102015017153B3 (de) 2023-10-26
CN105472834B (zh) 2018-10-26
CN108650747A (zh) 2018-10-12
US10420196B2 (en) 2019-09-17
US20160081171A1 (en) 2016-03-17
FR3025868A1 (fr) 2016-03-18
US20180160515A1 (en) 2018-06-07
CN105472834A (zh) 2016-04-06
US9907151B2 (en) 2018-02-27
DE102015217712B4 (de) 2017-01-19
CN108650747B (zh) 2020-11-10
DE102015217712A1 (de) 2016-03-17

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