EP2532949B1 - Beleuchtungs- und/oder Signalisierungsvorrichtung mit integriertem Wärmeableiter - Google Patents

Beleuchtungs- und/oder Signalisierungsvorrichtung mit integriertem Wärmeableiter Download PDF

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Publication number
EP2532949B1
EP2532949B1 EP12170716.0A EP12170716A EP2532949B1 EP 2532949 B1 EP2532949 B1 EP 2532949B1 EP 12170716 A EP12170716 A EP 12170716A EP 2532949 B1 EP2532949 B1 EP 2532949B1
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EP
European Patent Office
Prior art keywords
radiator
series
enclosure
fins
sink
Prior art date
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Active
Application number
EP12170716.0A
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English (en)
French (fr)
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EP2532949A2 (de
EP2532949A3 (de
Inventor
Christine Roucoules
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.)
Valeo Vision SAS
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Valeo Vision SAS
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Publication of EP2532949A2 publication Critical patent/EP2532949A2/de
Publication of EP2532949A3 publication Critical patent/EP2532949A3/de
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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
    • F21S41/10—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
    • 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]
    • 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
    • F21S45/47—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
    • 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
    • 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
    • F21S45/60—Heating of lighting devices, e.g. for demisting

Definitions

  • the present invention relates to a lighting and / or signaling device for a vehicle and more particularly relates to elements whose mission is to dissipate heat originating from a light source that the device comprises.
  • Lighting and / or signaling devices for vehicles mainly consist of a light source, a housing and a transparent element through which the light from the light source is projected, the transparent element delimiting with the housing an enclosure.
  • LEDs For questions of luminance and style, one or more light-emitting diodes, called LEDs, should be used. To ensure sufficient luminance on the road, the powers dissipated by the LEDs are of the order of 10 Watt.
  • Heat is thus released from the light source and if it is not dissipated, it can cause deformation of the housing or of the transparent element or even lower the quality of a light flux emitted by the LEDs.
  • cooling systems offering natural convection are heavy and bulky, while cooling systems offering forced convection use fans which pose a problem of cost, noise, dust and reliability.
  • a lighting and / or signaling device comprising the characteristics of the preamble of claim 1 is for example known from the document US2007 / 0008727A1 .
  • the aim of the present invention is therefore to resolve the drawbacks described above mainly by proposing a technical solution for optimizing and improving the efficiency of cooling in natural convection and reducing the mass of the radiators on board the lighting devices and / or signaling devices equipped with such a solution.
  • the invention provides for this purpose a lighting and / or signaling device comprising a housing, a transparent element defining with the housing an enclosure, a light source and at least one radiator in thermal contact with said source.
  • the radiator extends into the enclosure and the device comprises at least one heat sink, called the first dissipator, which performs a heat exchange between an air contained in the enclosure and a flow of air outside the enclosure. 'pregnant.
  • the radiator has a part for capturing a heat given off by said source and an advanced part for dispersing said heat.
  • the term “advanced” is understood to mean the fact that said dispersion part is located in the internal volume at a distance from the transparent element of between 5 mm and 50 mm.
  • the radiator brings a maximum of heat close to the glass in order, in particular, to limit the phenomena of condensation on the glass.
  • This also makes it possible to improve the dissipation of heat at the level of the dispersion part because the latter is located near the transparent element, the external face of the latter being directly in contact with the flow of outside air.
  • the first dissipator thus represents a cold surface cooled by the flow of outside air and which allows the air located inside the enclosure to cool.
  • the air inside the enclosure thus circulates from the radiator to the first heat sink before returning to the radiator, carrying out a circulation loop, thus creating a phenomenon of natural convection inside the enclosure. promoting the cooling of the air inside the enclosure.
  • the heat sink and the first heat sink are separate.
  • the first heatsink comprises a first series of fins, a second series of fins and a base interposed between the first series and the second series, said base being integral with the housing while the first series of fins extends into a surrounding volume where the flow of external air circulates, the second series of fins extends into a volume delimited by the enclosure, called the internal volume.
  • the fins of the first heat sink are thermally connected to the base and optimize the heat exchange between the hot air present inside the case and the cold air present outside the case.
  • the first heat sink is located above the heat sink. In this way, a flow of air inside the enclosure will be created, the hot air near the radiator rising towards the cold source represented by the first dissipator, then descending once cooled towards the radiator, thus making a loop. traffic.
  • the first heat sink is located in the extension of the heat sink.
  • at least one axis perpendicular to a side wall of the case on which the first heat sink is located intersects both the heat sink and the first heat sink.
  • at least one axis parallel to the transparent element intersects both the heat sink and the first heat sink.
  • said device comprises a first duct arranged above the enclosure and capable of guiding the flow of outside air towards the first dissipator, the first duct comprising a first exhaust means allowing the flow of air. outside air to come out of the first duct.
  • the first discharge means is, in particular, a grid and thus allows the flow of outside air to be renewed and to remain at a temperature allowing the cooling of the first heat sink.
  • said device comprises a second heat sink located below the heat sink and which performs an exchange thermal between the air contained in the enclosure and the flow of outside air.
  • the second device is separate from the radiator and from the first dissipator. The presence of the second heat sink, in addition to the first heat sink, can thus increase the cooling capacity of the air contained inside the enclosure.
  • the second heat sink comprises a first series of fins, a second series of fins and a base interposed between the first series and the second series, said base being integral with the housing while the first series of fins extends in a surrounding volume where the flow of outside air circulates, the second series of fins extends in a volume delimited by the enclosure.
  • the fins of the second heat sink are thermally connected to the base and optimize the heat exchange between the hot air present inside the case and the cold air present outside the case.
  • said device comprises a second duct disposed below the enclosure and capable of guiding the flow of outside air towards the second dissipator, and in which the second duct comprises a second discharge means allowing the flow of air to come out of the second duct.
  • the second discharge means is, in particular, a grid and thus allows the flow of outside air to be renewed and to remain at a temperature allowing the cooling of the first dissipator.
  • a thermal conduction means is connected on one side to the heat sink and on the other side to the second heat sink.
  • the thermal conduction means can thus improve the heat exchange between the heat sink and the second heat sink.
  • the thermal conduction means is, in particular, a heat pipe or, for example, a thermally conductive strip.
  • a portion of the heat sink (s) extends at a distance from the transparent element of less than 50 mm.
  • part of the base of the heat sink (s) is molded into the housing.
  • part of the base of the heat sink (s), in particular a peripheral part of the base of the heat sink (s) is covered with a material constituting the housing, or advantageously embedded in this material.
  • the base of the heat sink (s) is attached to the housing.
  • the case comprises an opening for receiving the heat sink (s), the latter comprising a means for fixing to the case, for example, holes suitable for receiving a fixing element, in particular screws.
  • the base of the heat sink (s) has ventilations capable of circulating the flow of outside air inside the enclosure.
  • the base of the heat sink (s) has openings allowing entry into the enclosure of the external air flow.
  • the area of the case where the heat sink (s) is located is used to place the ventilations.
  • These ventilations make it possible to further cool the air contained in the enclosure, by allowing the flow of outside air to penetrate inside the enclosure.
  • the housing may also include such ventilations, in particular near the base of the heat sink (s).
  • the ventilations can be baffles integrated into the radiator or holes on which filters or membranes are fixed by gluing.
  • the ventilations are located below the radiator.
  • the figure 1 is a schematic sectional view of a lighting and / or signaling device according to the invention.
  • the figure 2 is a view identical to the figure 1 representing an alternative embodiment.
  • the figure 3 is a view identical to the figure 1 representing an alternative embodiment.
  • figure 4 is a view similar to figure 1 representing an alternative embodiment.
  • FIG. 1 there is shown a lighting and / or signaling device 1 according to the invention which is intended to equip a motor vehicle, for the projection of a light beam on the road taken by the vehicle.
  • This lighting and / or signaling device 1, called device 1 in the remainder of the description, comprises a housing 2 and a transparent element 3 delimiting with the housing 2 an enclosure 4.
  • the housing 2 is for example made of plastic material and has five walls: four side walls 5 interconnected to form an internal volume 7 and a bottom 6 located at one end of the side walls 5 and closing on one side the internal volume 7. Of the four side walls 5, only one side wall lower 5 'and an upper side wall 5 "are shown.
  • the upper 5" and lower 5' side walls extend in planes parallel to each other and substantially horizontal while the bottom 6 extends in a substantially vertical plane, c 'that is to say in a plane perpendicular to the planes in which extend the lower 5' and upper 5 "side walls.
  • the transparent element 3 is located at an end opposite the bottom 6 with respect to the side walls.
  • the transparent element 3 is, in particular, a mirror 3 '. It thus closes the internal volume 7 and forms, with the four side walls 5 and the bottom 6 of the housing 2, the enclosure 4.
  • the device further comprises a light source 8 and at least one radiator 9 in thermal and physical contact with the source 8.
  • the source light 8 and the radiator is located inside the enclosure 4, that is to say in the internal volume 7.
  • the light source 8 comprises one or more light-emitting diodes, also called LED 8 '. These LEDs 8 ′ are supplied by a control device 33 on which electronic components are located.
  • the control device 33 is, for example, a printed circuit board comprising electronic components.
  • the device 1 comprises at least one heat sink, called the first sink 14, which performs a heat exchange between an air contained in the enclosure 4, called interior air, and a flow of air outside the enclosure. 4, represented by arrow 30.
  • the heat sink 9 and the first heat sink 14 are two separate parts.
  • the radiator 9 and the first dissipator 14 are thus separated by the interior air present in the enclosure.
  • the radiator heats the interior air present in the enclosure 4 while the first dissipator 14 cools it.
  • a natural convection phenomenon is created between the radiator 9 which represents a hot surface and the first heat sink 14 which represents a cold surface.
  • the interior air is thus caused to move in the enclosure of the radiator 9 towards the first heat sink 14 to return to the radiator 9.
  • An interior air flow represented by the arrow 28 is thus created inside the enclosure. 4, that is to say in the internal volume 7. This air flow performs, in particular, a circulation loop between the radiator 9 and the first dissipator 14.
  • this first heat sink 14 comprises a first series of fins 15, a second series of fins 16 and a base 17 interposed between the first series 15 and the second series 16.
  • the first series of fins 15 extends into a surrounding volume where the flow of outside air circulates and the second series of fins 16 extends into the internal volume 7 delimited by the enclosure 4.
  • the base 17 is, for example, produced by a flat metal sheet or by a radiator, in particular a molded radiator. It is in contact, on the side of the first series of fins 15 with the surrounding volume in which the external air flow circulates and on the side of the second series of fins 16 with the internal volume 7.
  • the base 17 can be attached, for example by screwing onto the housing 2.
  • part of the base 17, in particular a peripheral part of the base 17, is molded onto the housing 2. That the base 17 is attached or overmolded, the housing 2 has an opening in which the base 17 is positioned, the base 17 being in all cases secured to the housing 2.
  • the sealing of the housing 2 at the level where the base 17 is located is provided by at least one seal (not shown) or by the cooperation of the surfaces in contact between the base 17 and the housing 2.
  • the first dissipator 14 is produced in a unitary fashion, that is to say that its first series of fins 15, its second series of fins 16 and its base 17 are made from the same material, in particular metallic so that they are in thermal contact.
  • the first series of fins 15 is cooled by the flow of outside air and in turn cools the base 17 and the second series of fins 16 in contact with the inside air.
  • the first heatsink may not have a series of fins if the heat to be dissipated from the LEDs 8 ′ does not justify it. It is also possible to adapt the number of fins in each series according to the heat to be dissipated. The greater the heat to be dissipated, the more fins there are on the outside, i.e. the more individual fins the first set of fins 15 comprises.
  • the radiator 9 has a part 11 for capturing a heat given off by the LEDs 8 'via the control device 33 and a dispersion part 12, the role of which is to disperse, in other words to remove, this heat.
  • the radiator 9 includes also a body 10 connecting the capture part 11 and the dispersion part 12. This body 10 extends, in particular, horizontally, that is to say parallel to the lower side walls 5 ′ and upper 5 ′′.
  • the capture part 11 comprises thermal connections 11 ', thermally connecting the control device 33 of the LED 8' to the body 10 of the radiator 9. These thermal connections 11 'are, in particular, arms which extend transversely to the body 10. of the radiator 9 and which connect it thermally and physically to the control device 33.
  • the control device 33 extends, for example, in a plane parallel to the plane in which the body 10 extends, that is to say in a horizontal plane.
  • the light source 8 is located, in particular, on the control device 33 which then extends from the light source towards the bottom 6 of the housing 2.
  • the thermal connections 11 ', transverse to the body 10 and to the control device 33 s' thus extend in part between the light source 8 and the bottom 6.
  • the dispersion part 12 is located in the internal volume 7 delimited by the enclosure 4 at a distance from the glass 3 'of between 5 mm and 50 mm.
  • This dispersion part 12 comprises, in particular, fins 13 to improve the heat exchange with the interior air contained in the enclosure 4. These fins 13 extend transversely to the body 10 of the radiator 9 and are located close to the mirror. 3 'so as to bring as much heat as possible near the 3' mirror to limit condensation on the 3 'mirror.
  • the fins 13 can, in particular, be oriented vertically in order to direct the internal air flow and thus increase the cooling efficiency of the LEDs 8 'while further limiting the condensation on the glass 3', on the part a larger volume of heated air close to the ice 3 '.
  • the radiator 9 is made in one piece, that is to say that the body 10, the capture part 11 and the dispersion part 12 are made from the same material, for example, by molding 'a conductive material. It is, for example, Aluminum or an aluminum alloy.
  • the first heat sink 14 is positioned above the heat sink 9 at the level of the upper side wall 5 ". It is located, in particular, in the extension of the heat sink 9 along an axis 29 parallel to the plane in which the transparent element extends. In other words, the axis 29 intersects both the radiator 9 and the first heat sink 14.
  • the first heat sink 14 is located in the extension of the heat sink 9 along an axis 36 perpendicular to the upper side wall 5 ", the 'axis 36 being vertical and intersecting both the heat sink 9 and the first heat sink 14.
  • the interior air thus rises while heating in contact with the radiator 9 and then descends again rapidly after having been cooled in contact with the first dissipator 14, thus creating a phenomenon of natural convection inside the enclosure 4.
  • the interior air produces thus circulation loops and the term internal air flow, represented by arrow 28, is the air flow effecting these loops.
  • Another advantage comes from the fact that by increasing the speed of circulation of the internal air flow, the speed of rise of hot air in front of the transparent element 3 is increased, which ensures better demisting of the transparent element 3.
  • the device further comprises a first duct 18 disposed above the enclosure 4 and capable of guiding the flow of outside air towards the first dissipator 14.
  • the first duct 18 is thus disposed on the upper side wall 5 "so that at least part of the base 17 and the first series of fins 15 are located in the first duct 18.
  • the first duct 18 channels the flow of outside air which can rush into it and cool the air.
  • the flow of outside air can then leave the first duct 18 via a first discharge means 19 which the first duct comprises 18.
  • This first evacuation means 19 is, in particular, an evacuation orifice or, for example, a grid 19 '. This ensures renewal of the external air flow to improve the cooling of the first heat sink 14.
  • the figure 2 illustrates a variant of the invention according to which the device 1 comprises a second heat sink 20.
  • This second heat sink 20 is located, in particular, below the heat sink 9 and performs a heat exchange between the air contained in the enclosure 4 and the external air flow 30.
  • Such a second dissipator 20 is used in the case where the power to be dissipated and therefore the heat to be dissipated are greater.
  • This second heat sink 20 is separate from the first heat sink 14 and from the heat sink 9.
  • the second heat sink 20 is located, in particular, below the heat sink 9, at the level of the lower side wall 5 'so that it helps to promote the loop of indoor air circulation.
  • the second heatsink 20 comprises, like the first heatsink 14, a first series of fins 21, a second series of fins 22 and a base 23 interposed between the first series 21 and the second series 22.
  • the base 23 is integral. of the housing 2, for example, at the level of the lower side wall 5 '.
  • the first series of fins 21 thus extends into the surrounding volume where the flow of external air circulates and the second series of fins 22 extends into the internal volume delimited by the enclosure 4.
  • the first series of fins fins 21, the second series of fins 22 and the base 23 of the second heat sink 20 have the same characteristics as the first series of fins 15, the second series of fins 16 and the base 17 of the first heat sink 14.
  • the second dissipator 20 is produced in a unitary fashion, that is to say that its first series of fins 21, its second series of fins 22 and its base 23 are made from the same material, in particular metallic so that they are in thermal contact.
  • the first series of fins 21 is cooled by the flow of outside air and in turn cools the base 23 and the second series of fins 22 in contact with the inside air.
  • the device 1 comprises a second duct 24 disposed below the enclosure 4 and capable of guiding the flow of outside air towards the second dissipator 20 of the same way as explained above for the first duct 18.
  • the second duct 24 is thus arranged on the lower side wall 5 'so that at least part of the base 23 and the first series of fins 21 are located in the second duct 24.
  • the flow of outside air rushes into the second duct 24 and can cool the second heat sink 20 via the first series of fins 21.
  • the flow of outside air can then exit of the second conduit 24 by a second discharge means 32 which the second conduit 24 comprises.
  • This second discharge means 32 is, in particular, an discharge orifice or, for example, a grid 32 '. This ensures renewal of the external air flow to improve the cooling of the second heat sink 14.
  • the presence of the first dissipator 14 and of the second dissipator 20 thus makes it possible to increase the exchange capacity with the exterior and therefore to reduce the size and the mass of the radiator 9.
  • the figure 2 also makes it possible to illustrate a variant of the invention according to which a thermal conduction means 25 is positioned between the radiator 9 and the second dissipator 20.
  • the thermal conduction means 25 is a metal part making it possible to transfer heat from the heat sink. heat sink 9 to the second heat sink 20 to facilitate cooling of the heat sink 9.
  • the thermal conduction means 25 makes it possible to increase the capacity of the heat sink 9 to dissipate the heat given off by the control device 33 of the LEDs 8 'and therefore to reduce the on-board mass of the radiator 9.
  • the thermal conduction means 25 is a drain which conducts the calories coming from the radiator directly to the second dissipator.
  • a portion 26 of the heat sink (s) 14, 20 extends at a distance from the glass of less than 50 mm.
  • the first heat sink 14, the heat sink 9 and the second heat sink 20 are cut by the axis 29 parallel to the plane in which the transparent element 3 extends and by the axis 36 perpendicular to the upper side wall 5 ".
  • the figure 3 illustrates an alternative embodiment of the invention according to which the base 17, 23 of the dissipator (s) 14, 20, has ventilations 27 capable of circulate the flow of outside air inside the enclosure 4.
  • the ventilations 27 By placing the ventilations 27 on the base 17, 23 of the heat sink (s) 14, 20, one thus takes advantage of the opening in the housing generated by these to install the heatsinks. In this way, an additional hole is avoided to ensure ventilation of the internal volume 7.
  • the arrow 31 represents the circulation of the external air flow entered by means of the ventilations 27 inside the interior volume 7.
  • the ventilations 27 are thus located below the radiator 9. These ventilations 27 make it possible to increase the circulation. air inside the enclosure 4 by allowing the introduction of the outside air flow present in the second duct 24 to penetrate inside the volume 7.
  • These ventilations 27 are, in particular, membranes welded to the housing 2 or on the ice 3 'or baffles with filter.
  • the figure 4 illustrates an alternative embodiment which is not covered by claim 1 and according to which the control device 33 is placed directly on the radiator, on a zone close to the window 3 ', that is to say a zone situated within 50 mm of the 3 'ice.
  • the device 1 also comprises the first heat sink 14 and the heat sink 9 but the latter does not have a dispersion part 12 since the heat is directly released by the control device 33 in an area close to the glass 3 '.
  • the control device 33 thus makes it possible to bring heat close to the ice 3 'and to obtain the demisting of the ice 3'.
  • the radiator 9 comprises the collection zone 11 provided with the thermal connections 11 '.
  • the figure 4 also makes it possible to illustrate a mask 34 which the device 1 comprises and which extends between the light source 8 and the control device 33, the mask covering the latter. Its purpose is, in particular, to hide the constituent elements of the device 1 such as for example the radiator 9 and the control device 33, so that they are not visible from the outside through the transparent element 3.
  • the mask 34 could also be connected directly from the light source 8 to the radiator 9.
  • control device 33 is placed on the dispersion part 12, near the ice 3 '.
  • the control device 33 is here located in the internal volume at a distance from the glass 3 'of between 5 mm and 50 mm. In this way, the heat given off by the control device 33 is used to create convective air flows as close as possible to the ice 3 'in order to ensure the demisting of the condensation that may be created on an internal face of the ice. transparent element 3.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Claims (14)

  1. Beleuchtungs- und/oder Signalisierungsvorrichtung (1), die ein Gehäuse (2), ein durchsichtiges Element (3), das mit dem Gehäuse (2) einen Einschluss (4) abgrenzt, eine Lichtquelle (8) und mindestens einen Radiator (9) in Wärmekontakt mit der Quelle (8) umfasst, wobei sich der Radiator (9) in dem Einschluss (4) erstreckt, und wobei die Vorrichtung (1) mindestens eine Wärmesenke (14), erste Wärmesenke (14) genannt, umfasst, die einen Wärmetausch zwischen einer Luft, die in dem Einschluss (4) enthalten ist, und einem Luftstrom außerhalb des Einschlusses (4) ausführt, dadurch gekennzeichnet, dass der Radiator (9) einen Dispersionsteil (12) einer Wärme, die von der Quelle (8) abgegeben wird, und einen Gewinnungsteil (11) der Wärme umfasst, wobei der Dispersionsteil (12) in einem Innenraum (7), der von dem Einschluss (4) abgegrenzt ist, in einem Abstand von dem durchsichtigen Element (3), der zwischen 5 mm und 50 mm beträgt, liegt.
  2. Vorrichtung (1) nach Anspruch 1, wobei der Radiator (9) und die erste Wärmesenke (14) getrennt sind.
  3. Vorrichtung (1) nach einem der vorstehenden Ansprüche, wobei die erste Wärmesenke (14) eine erste Reihe von Rippen (15), eine zweite Reihe von Rippen (16) und einen Sockel (17), der zwischen der ersten Reihe (15) und der zweiten Reihe (16) eingefügt ist, umfasst, wobei der Sockel (17) mit dem Gehäuse (2) fest verbunden ist, während sich die erste Reihe von Rippen (15) in einem umgebenden Raum erstreckt, in dem der externe Luftfluss zirkuliert, wobei sich die zweite Reihe von Rippen (16) in dem Innenraum (7) erstreckt.
  4. Vorrichtung (1) nach einem der vorstehenden Ansprüche, wobei die erste Wärmesenke (14) oberhalb des Radiators (9) liegt.
  5. Vorrichtung nach Anspruch 4, wobei die erste Wärmesenke (14) in der Verlängerung des Radiators (9) liegt.
  6. Vorrichtung (1) nach einem der vorstehenden Ansprüche, wobei die Vorrichtung (1) eine erste Leitung (18) umfasst, die oberhalb des Einschlusses (4) angeordnet und dazu geeignet ist, den äußeren Luftfluss zu der ersten Wärmesenke (14) zu führen, und wobei die erste Leitung (18) ein erstes Ableitungsmittel (19) umfasst, das es dem äußeren Luftfluss erlaubt, aus der ersten Leitung (18) auszutreten.
  7. Vorrichtung (1) nach einem der vorstehenden Ansprüche, wobei die Vorrichtung (1) eine zweite Wärmesenke (20) umfasst, die unterhalb des Radiators (9) liegt, und die einen Wärmetausch zwischen der Luft, die in dem Einschluss (4) enthalten ist, und dem äußeren Luftfluss ausführt.
  8. Vorrichtung (1) nach Anspruch 7, wobei die zweite Vorrichtung (20) von dem Radiator (9) und der ersten Wärmesenke (14) getrennt ist.
  9. Vorrichtung (1) nach einem der Ansprüche 7 oder 8, wobei die zweite Wärmesenke (20) eine erste Reihe von Rippen (21), eine zweite Reihe von Rippen (22) und einen Sockel (23), der zwischen der ersten Reihe (21) und der zweiten Reihe (22) eingefügt ist, umfasst, wobei der Sockel (23) mit dem Gehäuse (2) fest verbunden ist, während sich die erste Reihe von Rippen (21) in einem umgebenden Raum erstreckt, in dem der äußere Luftfluss zirkuliert, wobei sich die zweite Reihe von Rippen (22) in einem Raum, der von dem Einschluss (4) abgegrenzt ist, erstreckt.
  10. Vorrichtung (1) nach einem der Ansprüche 7 bis 9, die eine zweite Leitung (24) umfasst, die unterhalb des Einschlusses (4) angeordnet und dazu geeignet ist, den äußeren Luftfluss zu der zweiten Wärmesenke (20) zu führen, und wobei die zweite Leitung (24) ein zweites Ableitungsmittel (32) umfasst, das es dem Luftfluss erlaubt, aus der zweiten Leitung (24) auszutreten.
  11. Vorrichtung (1) nach einem der Ansprüche 7 bis 10, wobei ein Wärmeleitungsmittel (25) auf einer Seite mit dem Radiator (9) und auf der anderen Seite mit der zweiten Wärmesenke (20) verbunden ist.
  12. Vorrichtung (1) nach einem der vorstehenden Ansprüche, wobei ein Teil des Sockels (17, 23) der Wärmesenke(n) (14, 20) in dem Gehäuse (2) umspritzt ist.
  13. Vorrichtung (1) nach einem der vorstehenden Ansprüche, wobei der Sockel (17, 23) der Wärmesenke(n) (14, 20) Belüftungen (27) besitzt, die dazu geeignet sind, den äußeren Luftfluss in dem Inneren des Einschlusses (4) zirkulieren zu lassen.
  14. Vorrichtung (1) nach Anspruch 13, wobei die Belüftungen (27) unterhalb des Radiators (9) liegen.
EP12170716.0A 2011-06-07 2012-06-04 Beleuchtungs- und/oder Signalisierungsvorrichtung mit integriertem Wärmeableiter Active EP2532949B1 (de)

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FR1154949A FR2976345B1 (fr) 2011-06-07 2011-06-07 Dispositif d'eclairage et/ou de signalisation a radiateur et dissipateur integres

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EP2532949A3 EP2532949A3 (de) 2013-03-20
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JP6235283B2 (ja) 2013-09-24 2017-11-22 株式会社東芝 照明装置

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US7275848B2 (en) * 2005-02-16 2007-10-02 Visteon Global Technologies, Inc. Headlamp assembly having cooling channel
US7249868B2 (en) * 2005-07-07 2007-07-31 Visteon Global Technologies, Inc. Lamp housing with interior cooling by a thermoelectric device
JP2007220618A (ja) * 2006-02-20 2007-08-30 Stanley Electric Co Ltd 車両用ｌｅｄ灯具
US20090059594A1 (en) * 2007-08-31 2009-03-05 Ming-Feng Lin Heat dissipating apparatus for automotive LED lamp

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FR2976345B1 (fr) 2015-05-01
EP2532949A2 (de) 2012-12-12
FR2976345A1 (fr) 2012-12-14
EP2532949A3 (de) 2013-03-20

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