WO2018090067A1 - Kühlkörper mit variablem thermischen widerstand - Google Patents
Kühlkörper mit variablem thermischen widerstand Download PDFInfo
- Publication number
- WO2018090067A1 WO2018090067A1 PCT/AT2017/060287 AT2017060287W WO2018090067A1 WO 2018090067 A1 WO2018090067 A1 WO 2018090067A1 AT 2017060287 W AT2017060287 W AT 2017060287W WO 2018090067 A1 WO2018090067 A1 WO 2018090067A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat sink
- motor vehicle
- vehicle headlight
- contact
- elements
- 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
- 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
- F21S45/48—Passive cooling, e.g. using fins, thermal conductive elements or openings with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting device
-
- 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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/28—Cover glass
-
- 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]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
-
- 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
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F2013/005—Thermal joints
- F28F2013/008—Variable conductance materials; Thermal switches
Definitions
- the invention relates to a motor vehicle headlight with a headlight housing and a cover plate with at least one in this motor vehicle headlight
- a heat sink device for cooling the at least one light source, a heat sink device is provided.
- light sources are generally arranged inside the headlight housing, such as incandescent lamps, for example.
- Automotive headlamps generate these conventional light sources and their components heat, which must be dissipated.
- light emitting diodes should be kept below their maximum operating temperature for optimum performance and longevity.
- the ambient temperature of the operating vehicle headlamp is lower than in the interior of the vehicle headlight itself, and so the most practical solution is to deliver the heat generated inside the vehicle headlamp to the ambient temperature.
- the headlamp housing of a motor vehicle headlamp and a covering the front of the housing cover fluidly usually the interior of the motor vehicle headlight fluidly separated from the environment to impurities, such as dust or other debris, from entering the interior of the motor vehicle headlight
- a separate cooling device which is mounted so that it cools the interior of the vehicle headlight and the light sources arranged therein, by giving off heat to the outside environment.
- Automotive headlamps are usually attached to a portion of the vehicle frame adjacent to the engine compartment, which often has significantly higher temperatures than the outside ambient temperature. For example, during the Vehicle operation in the engine compartment heat given off by the internal combustion engine and various components. Likewise, the air in the engine compartment is heated by solar energy during use or non-use of the vehicle. Therefore, it would be obvious, the temperature in the interior of the motor vehicle headlight as described in the patent application DE 10 2006 057569 B4, on the cover of a built-in
- Motor vehicle headlights may be partially transparent, not
- heat sink devices are so to the vehicle headlight
- the temperature may optionally be the same in the engine compartment, or higher than the temperature inside the vehicle headlight.
- the interior of the vehicle headlamp can not be cooled by the heat-radiating device arranged toward the engine compartment, but would even heat it up.
- the motor vehicle headlight with a cooling device which shields the interior of the motor vehicle headlight and the light sources arranged therein against the relatively high temperatures in the engine compartment.
- the object of the invention is to provide for the above-mentioned limitations and other disadvantages of the prior art, a motor vehicle headlight, the one
- Cooling device has, which cools the interior of the motor vehicle headlight and shields the light sources arranged therein against the relatively high temperatures in the engine compartment.
- the heat sink device comprises two heat sink elements separated by an air gap, which are arranged such that a first heat sink element in the interior of the motor vehicle headlight and a second heat sink element outside the vehicle headlight is mounted, wherein the heat sink device is provided with a contacting device, which is designed such that heat exchange between the heat sink elements via this Contacting device takes place when the temperature in the interior of the motor vehicle headlight is higher than the temperature in the area outside the motor vehicle headlight, to which the second heat sink element is attached, and that no heat exchange between the heat sink elements is possible if the
- Temperature in the interior of the motor vehicle headlight is lower than the temperature in the area outside the motor vehicle headlight, where the second
- Heatsink element is attached.
- Heat transfer contact with the at least one arranged in the headlight housing light source is placed.
- the second heat sink element is directed in the installed state of the motor vehicle headlight in the direction of the engine compartment, preferably positioned in an engine compartment.
- heat sink elements are arranged stationary relative to one another.
- the contacting device at least one heat-conducting
- Contain contact element which is movable with respect to the heat sink elements.
- Contacting device comprises a contact element or a plurality of contact elements, which allows heat exchange between the heat sink elements, when the temperature in the interior of the motor vehicle headlight is higher than the temperature in the area outside the motor vehicle headlight, on which the second heat sink element is mounted, wherein the contact element or the contact elements of
- Heat exchange between the heat sink elements is possible when the temperature in the interior of the motor vehicle headlight is lower than the temperature in the area outside the motor vehicle headlight, on which the second heat sink element is attached by the covered contact elements of the contacting while only in contact with a respective heat sink element or no heat sink element.
- Touch temperature condition to transfer heat for example, can be made flat or plan, it may cause wear or other reasons that the contact surfaces of the contact elements no longer touch the entire surface. This is detrimental to optimal heat transfer and therefore, for example, a thermal grease or other means, which are suitable for improving the heat transfer between two objects, can be used for this purpose.
- the contacting device comprises a first and a second contact element, which allow heat exchange between the heat sink elements, when the temperature in the interior of the motor vehicle headlight is higher than the temperature in the area outside the motor vehicle headlight, on which the second heat sink element is mounted wherein the first contact element is in simultaneous heat-conducting contact with the first heat sink element and at the same time on the second contact element with the second heat sink element, and that no heat exchange between the heat sink elements is possible when the temperature in the interior of the motor vehicle headlight is lower than the temperature in the Area outside of the motor vehicle headlight, on which the second heat sink element is mounted, in which the contact elements of the contacting device are only in contact with a respective heat sink element, but not with each other.
- At least one contact element of the contacting device is displaceably mounted in at least one recess in a heat sink element.
- the contact elements of the contacting device can be moved by at least one control element assigned to the respective contact element. Furthermore, it is advantageously provided that a first control element is associated with the first contact element and a second control element is associated with the second contact element.
- the first control element may be configured such that when the temperature in the interior of the motor vehicle headlight rises, the first contact element is extended by the first control element, so that a heat-conducting contact with the second contact element can be produced.
- the second control element is designed such that, as the temperature rises in the area outside the motor vehicle headlight on which the second heat sink element is mounted, the second contact element is retracted by the second control element, so that a heat-conducting contact with the first
- controls are made of a material that expands or contracts depending on the temperature.
- the controls are made of bimetal.
- the position of the contact elements could be adjusted so that they touch straight at 70 ° C, for example, in the interior of the headlamp housing and at 70 ° C in the area outside the vehicle headlamp on which the second heat sink element is mounted and establish a thermally conductive contact. It would also be conceivable that the contact elements are positioned or calibrated so that they are at 71 ° C, for example, in the interior of the headlamp housing and at 70 ° C in the area outside the vehicle headlamp on which the second heat sink element is attached, just touch and make a thermally conductive contact. The first calibration or positioning would therefore be a thermally conductive contact between the
- Headlight housing is just higher than the temperature in the area outside the vehicle headlight.
- FIG. 1 shows a cross section of an exemplary motor vehicle headlight
- FIG. 2 is a side view of a heat sink device according to the invention
- Fig. 3 is a side view of the heat sink device of FIG. 2 in the state of
- FIG. 4 is a side view of the heat sink device of FIG. 2 in the condition of no heat exchange
- Automotive headlamps 100 are mounted with light sources 104, 105, each of which emit light onto an associated reflector disposed below each light source.
- the first heat sink element 106 of the heat sink device 200 is placed in heat transfer contact with the light source 104 disposed in the vehicle headlamp 100, and a second heat sink element 107 is outside of
- FIG. 1 Motor vehicle headlight 100 in the installed state of the motor vehicle headlight 100 directed towards the engine compartment.
- FIG. 1 A detailed view of the heat sink device 200 and the components included is shown in FIG.
- the heat sink device 200 comprises two heat sink elements 201, 202 separated from one another by an air gap 209, wherein both heat sink elements 201, 202 are positioned stationary relative to one another. Between the heat sink elements 201, 202, the contacting device 210 is arranged, which can establish a thermal contact between the two separate heat sink elements 201, 202.
- Contacting device 210 includes the heat-conducting contact elements 203, 204, and the associated tempera ture-dependent controls 207, 208th
- a first contact element 203 is in a recess 205 present in the first heat sink element 201, and a second contact element 204 is in one in the second
- Heat sink element 202 existing recess 206 slidably mounted.
- a first control element 207 is assigned to the first contact element 203, and a second control element 208 is assigned to the second contact element 204.
- the contact elements 203, 204 can be moved into or out of the recesses 205, 206, at least in part, by the respective control elements 207, 208, which are made of bimetal in the example shown.
- FIG. 3 shows the state of the heat sink device 200 from FIG. 2, in which the temperature in the interior of the motor vehicle headlight 100 is higher than the temperature in the region of the second heat sink element 202 directed into the engine compartment, the first contact element 203 being affected by the temperature-dependent, first Control element 207 has been moved out of the recess 205 of the first heat sink element 201 so as to
- FIG. 4 shows the state of the heat sink device 200 of FIG. 2, in which the temperature in the interior of the motor vehicle headlight 100 is lower than that
- FIG. 5 are each heat sink element 501, 502 two recesses 505, 506, 511, 512th
- a first contact element 503 the first heat sink element 501 and a second contact element 504 are associated with the second heat sink element 502 and are arranged in the existing recesses 505, 506, 511, 512, that they in no way by an at least partial pushing out of the Recesses 505, 512 can come into contact, wherein each contact element 503, 504 can be moved at least in its respective opposite recess 506, 511 at least in part to produce a heat exchange with the unassigned heat sink member 501, 502.
- Fig. 6 shows a similar arrangement as in Figure 5, wherein the first and second
- Heat exchange with the first heat sink element 601 produce, which is provided without recesses and associated contact elements.
- a similar example with only a single contact element 803, 904 is shown in Figs. 8 and 9, wherein in Fig. 8, in contrast to Fig. 9, an additional recess 805 in the first
- Heat sink element 801 is provided.
- Fig. 7 shows the difference of the embodiment shown in Fig. 2, an additional second recess 712 in the second heat sink element 702, wherein the second
- Contact element 704 is horseshoe-shaped, so that it can be arranged in both recesses 706, 712 of the second heat sink element 702.
- the first contact element 1003 is preferably movably arranged on the upper and lower sides of the first heat sink element 1001, respectively, the first one
- Heatsink element 1001 has no recesses, and the second contact element 1004 is arranged in the recess 1006 of the second heat sink element 1002 and is shaped such that it can produce heat exchange with the preferably movable first contact element 1003 during the at least partial pushing out of the recess 1006.
- FIGS. 5, 6, 7, 8, 9 and 10 a drawing of the respective control elements 207, 208 has been omitted, wherein the contact elements of these embodiments are very well moved with control elements 207, 208 described above can.
- Temperature sensors may be provided, in which case a temperature sensor in the interior of the motor vehicle headlight 100 and another temperature sensor in the area outside the motor vehicle headlight 100, on which the second heat sink element 502, 602, 802, 902 is arranged attached.
- a controller compares those of the
- Temperature sensors each detected temperatures, comparing them and moves the respective contact element 503, 504, 603, 604, 803, 904 via the contact element 503, 504, 603, 604, 803, 904 associated, not shown in these figures control element 207, 208 with Help a drive, such as a linear motor or bellows and
- Thermal contact can be made or prevented.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201780071188.0A CN109964079B (zh) | 2016-11-17 | 2017-10-25 | 具有可变的热阻的冷却体 |
EP17794213.3A EP3542098B1 (de) | 2016-11-17 | 2017-10-25 | Kühlkörper mit variablem thermischen widerstand |
JP2019526290A JP6893982B2 (ja) | 2016-11-17 | 2017-10-25 | 可変熱抵抗を備える冷却体 |
KR1020197015600A KR102200885B1 (ko) | 2016-11-17 | 2017-10-25 | 가변 열저항을 갖는 방열판 |
US16/461,319 US10605429B2 (en) | 2016-11-17 | 2017-10-25 | Heat sink having variable thermal resistance |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA51043/2016A AT518977B1 (de) | 2016-11-17 | 2016-11-17 | Kühlkörper mit variablem thermischen Widerstand |
ATA51043/2016 | 2016-11-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018090067A1 true WO2018090067A1 (de) | 2018-05-24 |
Family
ID=60262648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2017/060287 WO2018090067A1 (de) | 2016-11-17 | 2017-10-25 | Kühlkörper mit variablem thermischen widerstand |
Country Status (7)
Country | Link |
---|---|
US (1) | US10605429B2 (de) |
EP (1) | EP3542098B1 (de) |
JP (1) | JP6893982B2 (de) |
KR (1) | KR102200885B1 (de) |
CN (1) | CN109964079B (de) |
AT (1) | AT518977B1 (de) |
WO (1) | WO2018090067A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11981294B2 (en) | 2020-04-30 | 2024-05-14 | Paccar Inc. | Headlamp heater control |
US11767957B2 (en) * | 2020-04-30 | 2023-09-26 | Paccar Inc. | Headlamp heater |
Citations (5)
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DE102006001711A1 (de) * | 2006-01-13 | 2007-07-26 | Audi Ag | Beleuchtungseinrichtung für ein Kraftfahrzeug |
JP2009021135A (ja) * | 2007-07-12 | 2009-01-29 | Stanley Electric Co Ltd | 車両用前照灯 |
US20090059594A1 (en) * | 2007-08-31 | 2009-03-05 | Ming-Feng Lin | Heat dissipating apparatus for automotive LED lamp |
DE102007057056A1 (de) * | 2007-11-27 | 2009-05-28 | Hella Kgaa Hueck & Co. | Scheinwerfer für ein Kraftfahrzeug mit Mitteln zum Wärmeaustausch zwischen dem Innenraum und der Außenseite des Scheinwerfers |
EP2602538A1 (de) * | 2011-12-08 | 2013-06-12 | Nissan Motor Manufacturing (UK) Ltd. | Befestigung der Beleuchtungseinheit für ein Fahrzeug |
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JPS61280164A (ja) * | 1985-06-05 | 1986-12-10 | Hitachi Ltd | 文字・画像入力装置の照明装置 |
US5131456A (en) * | 1991-07-01 | 1992-07-21 | Ibm Corporation | Bimetallic insert fin for high conduction cooling structure |
US7249868B2 (en) * | 2005-07-07 | 2007-07-31 | Visteon Global Technologies, Inc. | Lamp housing with interior cooling by a thermoelectric device |
JP2007172932A (ja) | 2005-12-20 | 2007-07-05 | Toyota Motor Corp | 車両用前照灯 |
JP4515391B2 (ja) * | 2006-01-17 | 2010-07-28 | 古河電気工業株式会社 | 車両用前照灯 |
JP2008091095A (ja) * | 2006-09-29 | 2008-04-17 | Toshiba Corp | 化学反応システムおよび燃料電池システム |
JP2009087733A (ja) * | 2007-09-28 | 2009-04-23 | Koito Mfg Co Ltd | 車両用灯具 |
DE102007055165A1 (de) * | 2007-11-19 | 2009-05-20 | Osram Gesellschaft mit beschränkter Haftung | LED-Scheinwerfer |
JP2012028135A (ja) | 2010-07-22 | 2012-02-09 | Stanley Electric Co Ltd | 車両用灯具 |
JP2012174354A (ja) * | 2011-02-17 | 2012-09-10 | Yamaha Motor Co Ltd | 前照灯及びこれを備えた鞍乗型車両 |
EP2572992B1 (de) * | 2011-09-26 | 2014-07-30 | Goodrich Lighting Systems GmbH | Flugzeuglicht |
US9285090B2 (en) * | 2014-07-10 | 2016-03-15 | Chen-Wei Hsu | Vehicle headlight assembly |
DE102014226647A1 (de) * | 2014-12-19 | 2016-06-23 | Osram Gmbh | LED-Träger mit einer LED und Leuchte mit einem derartigen LED-Träger |
US10429026B2 (en) * | 2017-06-16 | 2019-10-01 | GM Global Technology Operations LLC | Lamp assembly with anisotropic heat spreader and vehicle having the same |
JP6504219B2 (ja) * | 2017-09-20 | 2019-04-24 | マツダ株式会社 | 車両の前部構造 |
JP2019164916A (ja) * | 2018-03-19 | 2019-09-26 | 株式会社小糸製作所 | 車両用灯具 |
-
2016
- 2016-11-17 AT ATA51043/2016A patent/AT518977B1/de active
-
2017
- 2017-10-25 WO PCT/AT2017/060287 patent/WO2018090067A1/de unknown
- 2017-10-25 KR KR1020197015600A patent/KR102200885B1/ko active IP Right Grant
- 2017-10-25 US US16/461,319 patent/US10605429B2/en not_active Expired - Fee Related
- 2017-10-25 EP EP17794213.3A patent/EP3542098B1/de active Active
- 2017-10-25 JP JP2019526290A patent/JP6893982B2/ja active Active
- 2017-10-25 CN CN201780071188.0A patent/CN109964079B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102006001711A1 (de) * | 2006-01-13 | 2007-07-26 | Audi Ag | Beleuchtungseinrichtung für ein Kraftfahrzeug |
JP2009021135A (ja) * | 2007-07-12 | 2009-01-29 | Stanley Electric Co Ltd | 車両用前照灯 |
US20090059594A1 (en) * | 2007-08-31 | 2009-03-05 | Ming-Feng Lin | Heat dissipating apparatus for automotive LED lamp |
DE102007057056A1 (de) * | 2007-11-27 | 2009-05-28 | Hella Kgaa Hueck & Co. | Scheinwerfer für ein Kraftfahrzeug mit Mitteln zum Wärmeaustausch zwischen dem Innenraum und der Außenseite des Scheinwerfers |
EP2602538A1 (de) * | 2011-12-08 | 2013-06-12 | Nissan Motor Manufacturing (UK) Ltd. | Befestigung der Beleuchtungseinheit für ein Fahrzeug |
Also Published As
Publication number | Publication date |
---|---|
KR102200885B1 (ko) | 2021-01-12 |
AT518977B1 (de) | 2018-03-15 |
JP2019536229A (ja) | 2019-12-12 |
EP3542098A1 (de) | 2019-09-25 |
US20200072435A1 (en) | 2020-03-05 |
AT518977A4 (de) | 2018-03-15 |
EP3542098B1 (de) | 2021-12-15 |
US10605429B2 (en) | 2020-03-31 |
JP6893982B2 (ja) | 2021-06-23 |
KR20190080913A (ko) | 2019-07-08 |
CN109964079B (zh) | 2022-01-11 |
CN109964079A (zh) | 2019-07-02 |
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