WO2013117286A1 - Beleuchtungseinrichtung eines kraftfahrzeugs - Google Patents
Beleuchtungseinrichtung eines kraftfahrzeugs Download PDFInfo
- Publication number
- WO2013117286A1 WO2013117286A1 PCT/EP2013/000053 EP2013000053W WO2013117286A1 WO 2013117286 A1 WO2013117286 A1 WO 2013117286A1 EP 2013000053 W EP2013000053 W EP 2013000053W WO 2013117286 A1 WO2013117286 A1 WO 2013117286A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- light source
- reflector
- optical component
- lighting device
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/36—Combinations of two or more separate reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
-
- 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
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/338—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having surface portions added to its general concavity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
- F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
Definitions
- the invention relates to a lighting device of a motor vehicle according to the preamble of patent claim 1.
- Lighting devices for motor vehicles are known. They can be used inter alia as turn signals, brake lights, low beam, taillight, daytime running lights, headlights, etc. In particular, lighting devices are included
- LED Light emitting diodes
- LED headlamps used more frequently, being usually between so-called resolved and unresolved
- Vehicle headlights is distinguished.
- the vehicle headlamps there are used light emitting diodes comprising a plurality of light sources, each of the light sources comprising an optical system, e.g. Lens or reflector, has.
- each light source contributes individually to the generation of a driving light distribution of the motor vehicle.
- a common number of light sources for dissolved vehicle headlights is between five and ten.
- LED chips LED with several luminous chips
- Light-emitting diodes with a plurality of LED chips have the property that they can fail both when a so-called open load occurs, ie by interrupting the circuit, as well as in the event of a short circuit.
- an increased current flows through the remaining, i. still intact, LED chips, which leads to an inefficient performance and thus to a reduced life.
- an electro-optical light source with an LED chip wherein the light source comprises a light sensor assigned to the LED chip. Furthermore, a lighting system is described, which comprises the electro-optical light source with an LED chip and a light sensor, wherein the
- Lighting system comprising cooperating with the electro-optical light source operating device which drives the LED chip and the signal of the
- Light sensor evaluates.
- DE 10 2009 029 909 A1 describes a method for failure detection of light-emitting diodes in a vehicle, wherein a state variable of a light-emitting diode branch having the at least one light-emitting diode is compared with a comparison value and depending on this comparison
- Failure detection signal is generated, as a state variable by the
- Motor vehicle with a light source, a reflector and at least one
- Contour-generating imaging means for generating defined light / dark boundaries.
- the imaging agent is in the beam path of the reflector on the
- the decoupled light beams impinge on a lens or a corresponding lens system, by which a secondary beam path is achieved, as
- the published patent application DE 10 2004 009 790 A1 discloses a vehicle lighting system with a driving light area for generating a dipped beam and / or a high beam and a limiting light area for generating a limiting light.
- the light guide system couples a part of the light radiation generated in the driving light area from the driving light area and into the limiting light area.
- the patent DE 101 15 868 B4 discloses a headlamp unit of a motor vehicle with a headlamp with a reflector and a light source for generating a low beam, with another headlamp with a reflector and a light source for producing a different light function and means for generating a
- Light functions serving headlight is reflected by a light source emitted light.
- the patent DE 31 42 475 C2 discloses a vehicle lamp, in particular for
- Two-wheeled vehicles comprising a housing and a lamp seated in a lamp socket, which is arranged within the contour of a reflector, as well as with a
- Lens for covering the reflector and the housing, wherein the reflector consists of a hermetically sealed by the lens hollow body and an at least partially translucent indentation projects into the reflector hollow body, which forms an outwardly open space for receiving the lamp, said
- Reflector hollow body and feeder are made of one piece of clear plastic with an applied reflective layer.
- the feeder is provided with an optic comprising at least one lens which acts in Lichtensteinabstrahlraum.
- At the feeder optical elements are provided, which deflect a part of the outgoing of the lamp light rays and on in the reflection surface of the
- Reflect reflector hollow body provided window.
- the areas of the windows are added the application of the reflective layer covered, creating a passageway for light rays is created, so that z. B. also perpendicular to Lichtensteinabstrahlraum required light intensity distributions can be met.
- US Pat. No. 3,569,933 A discloses a display device which indicates to the driver the operating status of a luminaire. For this purpose, a part of the light emitted by the lamp light with the aid of a light guide is directed to each associated with the lamp display.
- the invention is based on the object, an improved over the prior art lighting device of a motor vehicle with integrated
- An illumination device of a motor vehicle comprises at least one light module, which is formed from at least one light source unit, wherein the light source unit comprises at least one light source, and wherein by means of the at least one light source, a light radiation for generating a driving light distribution is emitted.
- Light module is preferably used in a vehicle headlight, in particular in a vehicle headlight.
- an optical component is provided by means of which part of the emitted light radiation can be deflected in such a way that an image of the at least one light source unit can be generated outside the driving light distribution.
- the image of the at least one light source unit has to one of a number of in the
- Light source unit arranged light sources corresponding number of light surfaces.
- the light source unit consists of a support plate on which four light sources, e.g.
- LED chips are arranged, as in vehicle headlights for Low beam functions is known. Insofar as all four light-emitting diode chips are activated and intact, ie emit light radiation with corresponding current supply, they are illuminated by means of the optical component in the form of, for example, light points outside the light source
- Light radiation is deflected in each case at an angle dependent on the angle of incidence by means of the optical component.
- On the surface of the optical component so that different light surfaces can be displayed, which can be detected on the basis of the different angles of incidence and thus exit angle of the light radiation.
- a light-emitting diode chip only three points of light detectable for a viewer.
- the order of the arrangement of the light spots corresponds to the order of arrangement of the LED chips on the carrier plate.
- a viewer is thus able to visually detect the light spots from a certain angle without being dazzled by the light radiation of the driving light distribution and thus to draw conclusions about a possible failure of one or more light-emitting diode chips.
- the defective light source or even the light source unit as a whole can be replaced. With this failure detection method can thus be dispensed with expensive circuits or test equipment and is very cost effective.
- an emission direction of a light radiation reflected by the optical component is deviating from a main emission direction of the lighting module.
- the main emission direction is essentially in the direction of travel of the vehicle
- a further optical component is provided, by means of which the emitted light radiation for generating the
- the optical component is arranged at one end of the further optical component, which faces the vehicle center, wherein the vehicle center is based on the longitudinal orientation of the motor vehicle.
- the optical component serves as an extension of the further optical component, wherein the image of the light source unit can be easily detected laterally by a viewer, without this being detected by the viewer
- Driving light distribution is dazzled.
- Vehicle center based on the vehicle longitudinal orientation to arrange.
- the further optical component of the light source unit is in
- Subordinate main emission wherein the optical components are each formed as a beam path changing device.
- the further optical component is a first reflector, which is formed, for example, as a semicircular half-shell.
- the optical component is a second reflector with a coating which reduces the light output. This allows a visually pleasing view of the image of the light source unit, without the risk of dazzling the viewer.
- the dimensions of a surface of the first reflector are larger in comparison to the dimensions of a surface of the second reflector, so that only a comparatively small part of the emitted light radiation strikes the second reflector and thus is used for failure detection of individual light source.
- Driving light distribution is so that there is enough light radiation, so that the
- Fig. 1 shows schematically a plan view of a light module of a
- Lighting device comprising a light source unit, a first optical component and a second optical component
- Fig. 2 shows schematically a plan view of the illumination device with a
- Lighting module according to Figure 1 and Fig. 3 shows schematically a perspective top view of the lighting module according to
- Figures 1 to 3 show a lighting module 1 of a lighting device 2 for a motor vehicle, not shown in detail, wherein the lighting module 1 from a
- FIG. 1 shows a schematic and FIG. 3 a
- FIG. 1 perspective top view of the lighting module 1 and Figure 2 is a schematic plan view of the lighting device. 2
- the lighting module 1 is used to generate a driving light distribution FL for a motor vehicle, such as a motor vehicle.
- a motor vehicle such as a motor vehicle.
- the lighting module 1 is integrated in the lighting device 2, which is in the context of the invention as a vehicle headlamp, hereinafter referred to as vehicle headlamp 1.1 executed.
- Motor vehicles usually comprise two vehicle headlights 1.1, which are arranged laterally in a front region of the motor vehicle.
- a vehicle headlight 1.1 comprises a housing 1.1.1, the lighting module 1 and an optically transparent cover pane 1.1.2, which encloses the light module 1 together with the housing 1.1.1 and thus protects it in particular from weather influences.
- a plurality of lighting modules 1 can be arranged, which are divided by their own cover plates (not shown).
- this comprises the light source unit 3, which is formed in the present embodiment of a support plate 3.1 and four light sources 3.2.
- the light sources 3.2 are arranged side by side on the support plate 3.1 and preferably contacted with each other in series electrically. Alternatively, an electrical parallel connection of the light sources 3.2 is possible.
- the motor vehicle For driving the light sources 3.2, the motor vehicle comprises a control unit, e.g. Headlight control unit, which supplies the light sources 3.2 with a current corresponding to the nominal current of the light sources 3.2.
- a control unit e.g. Headlight control unit
- the light sources 3.2 are embodied in a preferred embodiment of the invention as light-emitting diode chips, which in operation, i. with appropriate energization, generate light radiation.
- a light-emitting diode chip is understood here to be a p-doped and n-doped semiconductor material, by means of which a so-called pn junction can be realized.
- pn junction can be realized.
- the LED chips with a layer or layer sequence, which is preferably applied directly to the doped semiconductor material.
- the layer or layer sequence comprises, for example
- the light radiation then contains, for example, blue and yellow spectral components, which is perceived by a viewer B (represented in FIG. 2 as an eye) as white light.
- Such light-emitting diode chips are also referred to as thin-film light-emitting diode chips and, because of their characteristics, are suitable as approximate Lambertian surface radiators for use in vehicle headlights 1.1.
- the light sources 3.2 may also be incandescent or
- the light source unit 3 is arranged downstream of the first optical component 4 in the main emission direction s of the light module 1.
- the main emission direction s of the light module 1 is in Present embodiment defined as a direction pointing in the direction of travel direction.
- the first optical component 4 is preferably formed as a first reflector 4.1, which is formed in the present embodiment as a semicircular half-shell and redirects the incoming light radiation in the main emission direction s of the light module 1, so that a desired driving light distribution FL is formed.
- the first reflector 4.1 has a reflective surface with a facet-shaped structure.
- the first reflector 4.1 is designed in the shape of a truncated pyramid and / or in the shape of a truncated cone.
- the first reflector 4.1 may also be formed as a solid body, which may be made of a dielectric material, such as e.g. Glass, exists.
- the solid body has for this purpose a light entrance and light exit opening.
- the cover 1.1.2 and / or the housing 1.1.1 form the first reflector 4.1 or the first reflector 4.1 is part of the housing 1.1.1.
- the second optical component 5 is provided, which in the present embodiment is a flat design, second reflector 5.1.
- the second reflector 5.1 is arranged at one end of the first reflector 4.1, which faces the center of the vehicle, wherein the vehicle center is based on the longitudinal orientation of the motor vehicle.
- the second reflector 5.1 forms an additional, reflective surface of the first reflector 4.1.
- the second reflector is 5.1 laterally at the edge of the first reflector 4.1, so that due to the Lambertian beam characteristic of the light source 3.2 only a small part of the light emitted by the light source 3.2 light radiation strikes the second reflector 5.1.
- the reflective surface of the second reflector 5.1 is small in comparison to the reflecting surface of the first reflector 4.1, so that only a small part of the light radiation emitted by the light source 3.2 strikes the second reflector 5.1.
- only a small part of the emitted light radiation to Failure detection of individual light source 3.2 used so that an optical
- Appearance of the driving light distribution FL is not or at least hardly influenced.
- the second reflector 5.1 has a coating or a
- the coating or the surface treatment is at least partially light-absorbing, so that the incident on the second reflector 5.1 light radiation is only partially reflected.
- a light-absorbing coating or surface treatment are, for example, paint, plastic, semiconductors. Alternatively, others are also suitable
- Coating materials that suitably have a dark color sensation, e.g. black, exhibit.
- light-absorbing material preferably dark colored, partially reflective
- plastic which suitably has a dark color, such as black acrylonitrile-butadiene-styrene copolymer polycarbonates (ABS-PC).
- the second reflector 5.1 has at least one optical imaging unit, which collects the incident light radiation on the second reflector 5.1 and correspondingly redirects only a part of the light radiation.
- the optical imaging unit can for example consist of one or more converging lenses or of achromats or of a combination of condenser lens and achromat.
- the incident on the second reflector 5.1 light radiation is deflected due to the above-described arrangement of the second reflector 5.1 in a direction which is different from the main emission direction s of the light module 1 and which to
- Vehicle center is technological.
- the light radiation LR reflected by the second reflector 5.1 is optically detectable outside the driving light distribution FL for the viewer B, without this being dazzled by the driving light distribution FL.
- the light source unit 3 has four light sources 3.2 arranged next to one another, thus the reflected light radiation LR comprises at least four radiation bundles spaced apart from one another.
- the light sources 3.2 along a Axle arranged side by side, which is parallel to the vehicle transverse axis.
- the light sources 3.2 are arranged side by side on the carrier plate 3.1 from left to right.
- the radiation beams of the reflected light radiation LR are then arranged next to one another along an axis which runs parallel to the vertical axis of the vehicle, ie from the viewer B from top to bottom.
- the individual ray bundles have correspondingly different exit angles, so that they can be detected as virtual light sources in the form of a light spot.
- the viewer B are four
- Reflector 5.1 visually detectable when all light sources are 3.2 intact.
- the viewer B is e.g. Workshop staff at a certain angle to the main emission direction s of the light module 1, that is laterally in front of the motor vehicle and thus laterally in front of the vehicle headlight 1.1, positioned (see Figure 2).
- the viewer B If, for example, one of the lighting modules 1 is defective, ie the lighting module 1 does not emit light radiation despite corresponding current flow, only three light points can be detected by the viewer B. Characterized in that the arrangement of the spaced-apart light spots corresponds to the arrangement of the lighting modules 1 in the light source unit 3, the viewer B knows which of the light source 3.2 is defective. A failure of the light source 3.2 is especially in the embodiment as LED chip when a so-called open load occurs, ie by interrupting the circuit, as well as a short circuit occur. In particular, in the case of a short circuit, an increased current flows through the remaining, ie still intact, LED chips, which increases an inefficient performance and thus to a reduced life of the light source unit 3 leads.
- the intensity of the emitted light radiation decreases due to aging of the light source 3.2, the intensity of the reflected light radiation LR is also reduced, as can be seen by a reduction in the intensity of the corresponding light spot or the corresponding light points.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380008482.9A CN104114412A (zh) | 2012-02-07 | 2013-01-10 | 机动车的照明装置 |
JP2014555962A JP6042456B2 (ja) | 2012-02-07 | 2013-01-10 | 自動車の照明装置 |
RU2014136186/11A RU2588331C2 (ru) | 2012-02-07 | 2013-01-10 | Автомобильное осветительное устройство |
EP13700615.1A EP2812212A1 (de) | 2012-02-07 | 2013-01-10 | Beleuchtungseinrichtung eines kraftfahrzeugs |
US14/377,036 US20150003098A1 (en) | 2012-02-07 | 2013-01-10 | Illumination Device of a Motor Vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012002334A DE102012002334A1 (de) | 2012-02-07 | 2012-02-07 | Beleuchtungseinrichtung eines Kraftfahrzeugs |
DE102012002334.0 | 2012-02-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013117286A1 true WO2013117286A1 (de) | 2013-08-15 |
Family
ID=47594633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/000053 WO2013117286A1 (de) | 2012-02-07 | 2013-01-10 | Beleuchtungseinrichtung eines kraftfahrzeugs |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150003098A1 (de) |
EP (1) | EP2812212A1 (de) |
JP (1) | JP6042456B2 (de) |
CN (1) | CN104114412A (de) |
DE (1) | DE102012002334A1 (de) |
WO (1) | WO2013117286A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013110840B4 (de) * | 2013-10-01 | 2023-12-21 | HELLA GmbH & Co. KGaA | Vorrichtung und Verfahren zur Diagnose von LED's in einem LED-Array-System |
DE102015013191A1 (de) * | 2015-10-10 | 2017-04-13 | Daimler Ag | Verfahren zum Betrieb einer Leuchteinheit und Leuchteinheit |
DE102017109138A1 (de) * | 2017-04-28 | 2018-10-31 | Valeo Schalter Und Sensoren Gmbh | Optische Erfassungseinrichtung für ein Kraftfahrzeug, wobei abhängig von einem Funktionszustand des Gehäuses der Betrieb einer Lichtquelleneinheit durchgeführt wird, Verfahren sowie Kraftfahrzeug |
JP7355474B2 (ja) * | 2018-08-24 | 2023-10-03 | スタンレー電気株式会社 | 車両用灯具 |
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DE503788C (de) * | 1930-07-26 | Agnes Pannicke Geb Lingner | UEberwachungsvorrichtung fuer die vorderen Scheinwerfer von Fahrzeugen, insbesondere Kraftfahrzeugen | |
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2012
- 2012-02-07 DE DE102012002334A patent/DE102012002334A1/de not_active Withdrawn
-
2013
- 2013-01-10 WO PCT/EP2013/000053 patent/WO2013117286A1/de active Application Filing
- 2013-01-10 CN CN201380008482.9A patent/CN104114412A/zh active Pending
- 2013-01-10 EP EP13700615.1A patent/EP2812212A1/de not_active Withdrawn
- 2013-01-10 JP JP2014555962A patent/JP6042456B2/ja not_active Expired - Fee Related
- 2013-01-10 US US14/377,036 patent/US20150003098A1/en not_active Abandoned
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DE102004009790A1 (de) | 2004-02-28 | 2005-09-15 | Daimlerchrysler Ag | Fahrzeuglichtanlage mit Fahr- und Begrenzungslicht |
DE102006041547A1 (de) * | 2005-09-22 | 2007-03-29 | Honda Motor Co., Ltd. | Anordnungsstruktur bzw. -konstruktion einer Fahrzeuglampe |
JP2008207654A (ja) * | 2007-02-26 | 2008-09-11 | Stanley Electric Co Ltd | 可動式前照灯 |
DE102009006250A1 (de) | 2009-01-27 | 2009-10-01 | Daimler Ag | Elektrooptisches Leuchtelement und Verfahren zur Überwachung desselben |
DE102009029909A1 (de) | 2009-06-19 | 2010-12-23 | Hella Kgaa Hueck & Co. | Verfahren zur Ausfallerkennung von Leuchtdioden und Schaltungsanordnung |
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US20150003098A1 (en) | 2015-01-01 |
RU2014136186A (ru) | 2016-03-27 |
CN104114412A (zh) | 2014-10-22 |
DE102012002334A1 (de) | 2013-08-08 |
EP2812212A1 (de) | 2014-12-17 |
JP2015506572A (ja) | 2015-03-02 |
JP6042456B2 (ja) | 2016-12-14 |
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