EP3009735A1 - Leuchtmodul, das eine diode umfasst - Google Patents
Leuchtmodul, das eine diode umfasst Download PDFInfo
- Publication number
- EP3009735A1 EP3009735A1 EP15189690.9A EP15189690A EP3009735A1 EP 3009735 A1 EP3009735 A1 EP 3009735A1 EP 15189690 A EP15189690 A EP 15189690A EP 3009735 A1 EP3009735 A1 EP 3009735A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- diode
- heat sink
- light module
- housing
- central axis
- 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.)
- Withdrawn
Links
Images
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
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
-
- 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
- F21S41/141—Light emitting diodes [LED]
-
- 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
-
- 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
- F21S41/16—Laser light sources
-
- 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
-
- 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
- F21S41/19—Attachment of light sources or lamp holders
-
- 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
- F21S41/19—Attachment of light sources or lamp holders
- F21S41/192—Details of lamp holders, terminals or connectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/49—Attachment of the cooling means
-
- 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
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
-
- 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
-
- 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
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the invention is concerned with the field of light diodes, and preferably with high power laser diodes, intended to equip, for example, lighting systems mounted on motor vehicles. These diodes make it possible to produce beams whose shape and light distribution can be modulated at will. Such devices are described by way of example in the publication EP 2,063,170 , or in the publication EP 2 690 352 .
- the diode is then rotated around the central axis until this optimal position is reached.
- connection or connection pins used to supply and control the diode are generally arranged on the rear part of the diode, and pass through the support to be connected to the external electrical connection members.
- connection pins are located around the rear central portion of the diode and are located on a circle whose center is disposed substantially on the central axis of the diode. In the most frequent case where the diode comprises only two pins, the two pins are located on a circle whose diameter corresponds to the segment connecting the two pins and whose center is located on the central axis of the diode.
- the support on which the diode is disposed comprises a single substantially circular orifice through which the connection pins extend.
- the diode is then positioned so that its central axis coincides with the axis of the orifice. And the diameter of the orifice is adjusted to allow the passage of the connecting pins. The central axis of the diode then passes through the hole in which the pins extend.
- connection pins are no longer arranged on a circle whose center is placed on the central axis of the diode. And when the diode comprises only two pins, the central axis of the diode no longer passes through the middle of the segment connecting the two pins, or by this segment itself.
- this type of diode requires to further increase the diameter of the orifice through which the connection pins pass to allow the rotation of the diode around its central axis. And the advantages of this new arrangement are lost in that the orifice being of larger diameter, the central portion of the diode may even less than previously evacuate the heat generated by the diode.
- the object of the invention is to propose a light module, in particular for lighting and / or signaling, comprising a heat sink on which is mounted a light diode comprising a central axis, the heat sink comprising a body of which a front face is maintained. in abutment against a rear face of the diode, the body having at least one orifice passing through said body and opening on its front face through which pass one or more pins extending from the rear face of the diode.
- the orifice is circular or oblong
- This light module is characterized in that the central axis of the diode does not pass through an orifice through the body and through which extends a pin.
- connection pins and the orifices are arranged appropriately, to establish a permanent contact between the hot spot of the diode and the heat sink, and to benefit from the advantages provided by the diodes now proposed by the manufacturers. .
- the invention also relates to a lighting device, in particular a lighting and / or signaling device for a motor vehicle, comprising a light module according to one or the other of the preceding characteristics, and which is fixed to a frame of said light device by intermediate case.
- the closure element can usefully be formed by a boss forming part of the frame.
- the diode 40 preferably a high power laser diode, represented in FIGS. Figures 1 and 2 , comprises a forward-facing portion may comprise one or more front faces 43a, 43b axially offset relative to each other, and a rear face 42. Connection pins 41 emerge from the rear face 42. Here in number of two, the number of pins is not limiting.
- the diode comprises a central axis xx ', substantially perpendicular to the front 43a and rear 42 faces and passing through the emission zone 44 of the actual light, which is the hottest point of the diode 40. The amount of heat generated by the light emission zone 44 is therefore maximum at the central axis xx '.
- the diode 40 comprises a lateral edge 45, here in the form of a flange, in which two notches 46 are made, the use of which will be described in detail below.
- the figure 3 illustrates a light device 50 according to the invention formed of the assembly of a heat sink 20, a housing 10 and a positioning disk 30.
- the heat sink 20 comprises a body 24 whose front face 21 constitutes the bearing face against which is held the rear face 42 of the diode 40.
- An orifice 23 passes through the body 24 of the heat sink to receive the connection pins 41, which therefore extend through the body 24.
- the connection pins are connected to a power supply (not shown) via a connector (not shown) to which they access through the rear part of the heat sink 20 .
- the figure 3 As a support for the present description illustrates a case in which the two connecting pins 41 pass through the same orifice 23 which, preferably, under these conditions has a substantially oblong shape.
- this embodiment is not limiting, and one can very well envisage providing as many ports as pins so as to increase the contact area between the rear face of the diode and the front face of the body of the heat sink in order to promote heat exchange between these two elements as illustrated in figure 3bis wherein the orifices 23 have a substantially circular shape.
- the front face 21 of the heat sink also comprises two lugs 22 arranged to fit into the notches 46 formed on the edge 45 of the diode 40. These lugs are intended to allow precise positioning of the diode on the face before 21 of the body 24 of the heat sink 20 and block the rotation about its central axis xx 'of the diode 40 relative to the body 24 of the heat sink 20.
- the figure 7 allows to illustrate in more detail the positioning of the lugs 22 with respect to the notches 46 when the rear face 42 of the diode 10 bears against the front face 21 of the heat sink.
- the light module according to the invention also comprises a housing 10 in which is inserted the heat sink 20.
- the heat sink bears against the bottom 13 of the housing 10.
- the housing 10 and the heat sink 20 are of complementary shape .
- the angular position of the heat sink 20 relative to the housing 10 is adjustable around an axis XX '.
- This axis of rotation XX ' is substantially perpendicular to the front face 21 of the body of the heat sink.
- the orifices 23 and the lugs 22 By positioning the orifices 23 and the lugs 22 appropriately, it is arranged to make coincide the central axis xx 'of the diode with the axis of rotation XX' of the heat sink in the housing 10 when the diode bears against the front face 21 of the body 24 of the heat sink 20, and that the lugs 22 are introduced into the notches 46.
- the orifice 23 is also arranged so that, once the diode mounted on the heat sink 20, the central axis xx 'of the diode does not pass through said orifice 23.
- a fictitious disk 26 also represented in dotted line, centered on the axis xx 'coincides with the axis XX', on which the fictitious disk 47 of the diode 40 bears, so as to promote heat exchange between the part central of the diode 40 corresponding to the hottest zone and the heatsink 20.
- the device according to the invention then allows the rotation of the heat sink 20 on which is mounted the diode 40 in the housing 10 about its axis XX ', corresponding to the central axis xx' of the diode 40, to adjust the device. lighting in which is inserted the light module, while obtaining an optimal evacuation of the heat produced by the diode.
- the light module according to the invention thus makes it possible to put in contact a zone 47 of the rear face of the diode centered around the hot point and of the central axis xx 'with a zone 26 of the front face of the dissipator, whatever the type of diode used.
- a window 11 is formed in the wall 13 forming the bottom of the housing 10 to allow the passage of the connecting son.
- a closure element 30 is associated with the housing 10 to which it is mechanically connected.
- This closure element 30 has the object, by enclosing the heat sink and the diode to inside the case, keep the diode resting against the front of the heat sink.
- An opening 31 is made in the center of the closure element 30 to allow the passage of light rays emitted by the source 44.
- the closure element bears on the flange 45 of the diode.
- threads respectively disposed on the inner side face 12 of the housing and on the side face 32 of the closure member 30 allow to establish a mechanical connection type screw / nut between the closure member and the housing.
- the mechanical connection mode between the closure element and the housing is not limiting and can also be done, for example, by means of clipping or snap-fastening means.
- the closure element 30 presses the rear face 42 of the diode 40 against the front face 21 of the heat sink, and the rear face of the body of the heat sink bears against the bottom 13 of the housing 10, so that the diode is held in a fixed angular position and determined inside the housing 10.
- the closure element may be a stand-alone part, as illustrated in Figures 3 to 6 . In which case it constitutes a complementary piece of the housing 10. It can also constitute a connecting piece forming part or not of the frame of a lighting device, and for fixing the housing 10 on said frame.
- the housing is screwed onto the closure element so as to put the diode 40 and the heat sink back under axial pressure, and to prohibit the movement of the heat sink and the diode at the same time. inside the case 10.
- the figure 4 illustrates a light module 50 assembled, in a side sectional view, and comprising a diode 40 mounted on the body 24 of a heat sink 20, arranged in a housing 10 closed by a closure element 30.
- the orifice 23 is sufficiently offset with respect to the central axis xx 'of the diode to allow contact between the hot spot of the diode and the front face of the heat sink. This contact helps to promote the flow of heat from the rear central portion to the heat sink that is the heatsink.
- FIGS. 5 and 6 illustrate an alternative embodiment of the heat sink whose body 24 supports exchange elements 25 extending axially in the rear part of the body 24 and passing through the opening 11 of the bottom 13 of the housing 10.
- the embodiments of the heat sink represented in support of the present description are not limiting, and the light module according to the invention can accommodate a heat sink comprising air circulation means, means for the circulation of a coolant or heat transfer fluid for discharging heat to an external cold source, or a heat sink comprising a thermoelectric system based on the physical principles known as the Peltier effect.
- the figure 8 represents a lighting device comprising a light module 50 according to the invention.
- the lighting device 60 comprises a housing 61 on which a lens 62 is mounted.
- the box also comprises an optical device of the type described in the publication. EP 2 690 352 already cited by reference and whose light module 50 is the primary light source.
- An optical imaging system 66, a wavelength converting device 65, a scanning device 64 and the light module 50 are mounted on a frame 63 also supporting the housing 61.
- the radiation from the light source of the diode 40 is directed to the scanning device 64 which distributes the light beam onto the wavelength conversion device 65.
- the light re-emitted by the wavelength conversion device 65 is directed to the imaging optical system 66 which projects the light beam forward of the illumination device 60 through the lens 62.
- the light module 50 comprises a high power laser diode 40 mounted to bear against the heat sink 20 inserted in the housing 10.
- the closure element is here formed by a boss 67 forming part of the frame 63 and on which the housing 10 is screwed.
- the adjustment of the angular position of the laser diode around its axis xx 'coincides with the axis XX' of rotation of the heat sink in the housing 10 is simply by slightly unscrewing the housing 10 and rotating the heatsink until 'the optimum position is reached. Once the adjustment is completed, the housing 10 is raised on the boss 67 acting as closure element.
- a laser diode it is also applicable to a light source comprising at least one semiconductor emitter chip, preferably a light emitting diode.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1459962 | 2014-10-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3009735A1 true EP3009735A1 (de) | 2016-04-20 |
Family
ID=51987406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15189690.9A Withdrawn EP3009735A1 (de) | 2014-10-16 | 2015-10-14 | Leuchtmodul, das eine diode umfasst |
Country Status (3)
Country | Link |
---|---|
US (1) | US9989236B2 (de) |
EP (1) | EP3009735A1 (de) |
CN (1) | CN105526543A (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017103856A1 (de) * | 2017-02-24 | 2018-08-30 | Osram Opto Semiconductors Gmbh | Optoelektronischer Halbleiterchip |
US10760777B2 (en) | 2017-03-08 | 2020-09-01 | Interamerica Stage, Inc. | LED puck holder for wire rope tension grids |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2063170A2 (de) | 2007-11-21 | 2009-05-27 | Audi AG | Beleuchtungsvorrichtung für ein Fahrzeug |
US20120063157A1 (en) * | 2010-09-10 | 2012-03-15 | Yoshiaki Nakazato | Lighting fixture |
WO2013042193A1 (ja) * | 2011-09-20 | 2013-03-28 | Necディスプレイソリューションズ株式会社 | 光源装置及び投写型表示装置 |
EP2690352A1 (de) | 2012-07-27 | 2014-01-29 | Valeo Vision | Adaptives Beleuchtungssystem für Kraftfahrzeug |
DE202014002809U1 (de) * | 2014-03-31 | 2014-04-11 | Osram Gmbh | Beleuchtungseinrichtung |
DE202014000778U1 (de) * | 2014-01-28 | 2014-05-12 | Chen-Wei Hsu | Fahrzeugscheinwerferkonstruktion |
JP2014107229A (ja) * | 2012-11-29 | 2014-06-09 | Toshiba Lighting & Technology Corp | 発光装置および車両用照明装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5414274B2 (ja) * | 2005-09-22 | 2014-02-12 | コーニンクレッカ フィリップス エヌ ヴェ | Led照明モジュール |
KR101127729B1 (ko) * | 2007-04-03 | 2012-03-22 | 오스람 아게 | 반도체 광 모듈 |
US7972038B2 (en) * | 2007-08-01 | 2011-07-05 | Osram Sylvania Inc. | Direct view LED lamp with snap fit housing |
US7905639B2 (en) * | 2008-05-28 | 2011-03-15 | Osram Sylvania Inc. | Side-loaded light emitting diode module for automotive rear combination lamps |
US7762700B2 (en) * | 2008-05-28 | 2010-07-27 | Osram Sylvania Inc. | Rear-loaded light emitting diode module for automotive rear combination lamps |
JP5297708B2 (ja) * | 2008-07-08 | 2013-09-25 | 株式会社小糸製作所 | 光源モジュール |
CN202511019U (zh) * | 2011-10-12 | 2012-10-31 | 侯山礼 | 一种整流低压led灯 |
CN202719475U (zh) * | 2011-12-29 | 2013-02-06 | 东莞市贻嘉光电科技有限公司 | 可调焦投射灯 |
CN202757019U (zh) * | 2012-08-22 | 2013-02-27 | 宁波东星电子有限公司 | 一种方便拼装的led灯 |
CN203560796U (zh) * | 2013-12-02 | 2014-04-23 | 广东凯西欧照明有限公司 | 弹簧限位的双圆旋转调焦天花灯 |
-
2015
- 2015-10-14 EP EP15189690.9A patent/EP3009735A1/de not_active Withdrawn
- 2015-10-15 US US14/883,778 patent/US9989236B2/en not_active Expired - Fee Related
- 2015-10-16 CN CN201510673485.5A patent/CN105526543A/zh active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2063170A2 (de) | 2007-11-21 | 2009-05-27 | Audi AG | Beleuchtungsvorrichtung für ein Fahrzeug |
US20120063157A1 (en) * | 2010-09-10 | 2012-03-15 | Yoshiaki Nakazato | Lighting fixture |
WO2013042193A1 (ja) * | 2011-09-20 | 2013-03-28 | Necディスプレイソリューションズ株式会社 | 光源装置及び投写型表示装置 |
EP2690352A1 (de) | 2012-07-27 | 2014-01-29 | Valeo Vision | Adaptives Beleuchtungssystem für Kraftfahrzeug |
JP2014107229A (ja) * | 2012-11-29 | 2014-06-09 | Toshiba Lighting & Technology Corp | 発光装置および車両用照明装置 |
DE202014000778U1 (de) * | 2014-01-28 | 2014-05-12 | Chen-Wei Hsu | Fahrzeugscheinwerferkonstruktion |
DE202014002809U1 (de) * | 2014-03-31 | 2014-04-11 | Osram Gmbh | Beleuchtungseinrichtung |
Also Published As
Publication number | Publication date |
---|---|
US20160109108A1 (en) | 2016-04-21 |
CN105526543A (zh) | 2016-04-27 |
US9989236B2 (en) | 2018-06-05 |
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