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EP2339234A1 - Cooling device - Google Patents

Cooling device Download PDF

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Publication number
EP2339234A1
EP2339234A1 EP09405231A EP09405231A EP2339234A1 EP 2339234 A1 EP2339234 A1 EP 2339234A1 EP 09405231 A EP09405231 A EP 09405231A EP 09405231 A EP09405231 A EP 09405231A EP 2339234 A1 EP2339234 A1 EP 2339234A1
Authority
EP
European Patent Office
Prior art keywords
fan
cooling device
heat sink
cooling
lamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09405231A
Other languages
German (de)
French (fr)
Inventor
Ernst Scherrer
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.)
Micronel AG
Original Assignee
Micronel AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Micronel AG filed Critical Micronel AG
Priority to EP09405231A priority Critical patent/EP2339234A1/en
Priority to US12/970,335 priority patent/US20110146966A1/en
Priority to JP2010285437A priority patent/JP2011135081A/en
Priority to CN2010106223081A priority patent/CN102109157A/en
Publication of EP2339234A1 publication Critical patent/EP2339234A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • 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
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • F21V29/677—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans the fans being used for discharging
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • 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 relates to a cooling device, in particular for an LED lamp, with a fan having a fan and a heat sink, which is flowed through for cooling with rotating fan wheel of air.
  • LED lamps have a much longer life compared to conventional incandescent lamps and also a significantly lower energy consumption. Compared with energy-saving lamps, the average life of LED lamps is much higher with about the same energy consumption, so that the usually higher manufacturing costs are justified for LED lamps.
  • the difficulty is that the LED elements must be cooled at high power. For dissipating the heat heatsinks are usually used, which passively or actively cool. In order to achieve the required cooling effect with a simultaneously compact design, there are already numerous proposals in the prior art.
  • the US 2005/0174780 discloses an LED lamp having a heat sink that is coolable by a built-in fan.
  • the heat sink has radially extending walls between which the air generated by the fan can flow to dissipate the heat generated by LED devices.
  • the US 2006/0193139 discloses an LED lamp which also has a heat sink and a fan.
  • the fan draws in radially air and delivers it axially to the heat sink.
  • the EP 1 998 108 discloses an LED lamp having a substantially tubular housing in which a fan and a heat sink are arranged. In progress Fan air flow is generated in the housing, which in turn generates another flowing through side openings airflow.
  • the WO 2008/103676 discloses an LED lamp having an oscillating plate for generating an airflow.
  • the US 2008/0212332 discloses an LED lamp that is cooled with a liquid, and especially water.
  • the invention has for its object to provide a cooling device of the type mentioned, which is particularly suitable for cooling an LED lamp and can be made even more compact at the same or higher performance.
  • the object is achieved in a generic cooling device in that the heat sink has deviating from the radial direction vanes and is formed as a one-piece mold.
  • the deviating from the radial direction vanes allow optimal air deflection and the greatest possible surface contact of the heat sink.
  • the design of the guide vanes has the substantial advantage that direct access to the fan edge is prevented.
  • a particularly compact design results when, according to a development of the invention, the fan is integrated into the heat sink.
  • the guide vanes are formed on a plate having an outer side on which the components to be cooled can be fastened.
  • the vanes may extend in one axial direction or in both axial directions of this plate.
  • the plate is preferably flat, for example square or round.
  • the heat sink is substantially pear-shaped.
  • Such a heat sink is particularly suitable for an LED lamp.
  • the fan has an engine board and that the heat sink has a support for the bearing support and the attachment of the motor board. This also allows a very compact design and cost-effective production.
  • the invention also relates to a lamp with a cooling device according to the invention.
  • the cooling device forms a built-in unit of the heat sink and the fan.
  • the lamp is in particular an LED lamp, wherein the LED elements are mounted directly on the heat sink.
  • the use of the cooling device for a lamp is the preferred application.
  • the cooling device according to the invention could also be used for cooling other components, in particular electronic components.
  • FIGS. 1 to 3 show a cooling device 1, which has a heat sink 6, which has a plate 9, on which spiral-shaped guide vanes are formed.
  • the plate 9 has a surface 10 which extends vertically to the longitudinal direction of the heat sink 1 and on which components, such as LED components, can be attached.
  • a bearing 15 is arranged, in which a fan 12 is mounted.
  • the fan 12 is located in a recess 14 of the heat sink 6.
  • air channels 8 are arranged, which extend axially and outwardly. As can be seen, these air ducts 8 extend axially beyond the surfaces 10 and 11. An airflow generated by the fan 12 is diverted by the vanes 7 in the radial direction. An outflow of air takes place already at the height of a fan 13 of the fan 12. Thus, the plate 9 is cooled by the surrounding vanes 17 with high power. The heat sink 6 is thus actively cooled by air flowing through. With the fan 12, the heat sink 6 forms a unit, for example, according to FIG. 8 in a lamp 23, in particular an LED lamp, can be installed.
  • the fan 12 has a motor board 14 on which the fan 13 is mounted. Such motor boards 14 are known per se.
  • the fan 12 is preferably used without a housing in the recess 18.
  • the fan 13 is an axial impeller.
  • the generated air flow is not only axial, but also partially radial.
  • the outer shape of the heat sink 6 is as seen about pear-shaped. This form is particularly suitable for the application of the heat sink 6 for cooling the in FIG. 8 shown lamp 22.
  • FIG. 4 shows a cooling device 2, the guide vanes 16 which extend in the radial direction outwardly curved and which are integrally formed on a flat plate 17.
  • a recess 19 of the fan 12 is arranged, which also has an axial fan 13 here.
  • a generated by the fan 12 radial air flow is thus deflected by the curved vanes 16 curved.
  • the outflowing air also directly cools the plate 17 and surfaces 24, each extending between two adjacent vanes 16.
  • the cooling device 2 also forms a unit which can be installed in a device, for example an LED lamp.
  • cooling device 3 differs from that according to FIG. 4 by the rectangular and in particular square training.
  • the guide vanes 20 provided here are likewise bent in the radial direction.
  • cooling device 4 largely corresponds to the cooling device 3 according to FIG. 5 , wherein here a standard fan 12 'is installed, which has a housing 25.
  • Cooling device 5 shown largely corresponds to the cooling device 2 according to FIG. 4 , but here is a fan 12 'is provided, which is a radial fan. Accordingly, a fan 21 is provided, which generates above all a radial air flow.
  • shown lamp 22 has a conventional socket 26, and a built-in cooling device 1.
  • a plurality of LED elements 23 are arranged on the surface 10 of the cooling device 1 . These elements 23 may be connected directly or indirectly to the plate 9 which, as explained above, is actively cooled by the fan 12. The heat generated by the LED elements 23 is thus dissipated via the plate 9 of the cooling device.

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

Abstract

The cooling device (1) has a fan (12) having a fan wheel and a heat sink (6) through which there is a flow for cooling purposes when the fan wheel rotates. The heat sink has guide vanes (7) that deviates from the radial direction and is embodied as an integral shaped portion. The fan is integrated in the heat sink. The guide vanes are integrally formed on a plate having an outer side, on which the components to be cooled is fixed.

Description

Die Erfindung betrifft eine Kühlvorrichtung, insbesondere für eine LED-Lampe, mit einem ein Lüfterrad aufweisenden Lüfter und einem Kühlkörper, der zur Kühlung bei drehendem Lüfterrad von Luft durchströmt ist.The invention relates to a cooling device, in particular for an LED lamp, with a fan having a fan and a heat sink, which is flowed through for cooling with rotating fan wheel of air.

LED-Lampen besitzen verglichen mit üblichen Glühlampen eine wesentlich höhere Lebensdauer und einen ebenfalls wesentlich kleineren Energieverbrauch. Verglichen mit Energiesparlampen ist die mittlere Lebensdauer bei LED-Lampen bei etwa gleichem Energieverbrauch wesentlich höher, so dass die üblicherweise höheren Herstellungskosten bei LED-Lampen gerechtfertigt sind. Bei LED-Lampen besteht die Schwierigkeit, dass die LED-Elemente bei hoher Leistung gekühlt werden müssen. Zum Abführen der Wärme werden in der Regel Kühlkörper verwendet, welche passiv oder aktiv kühlen. Um bei gleichzeitig kompakter Bauweise den erforderlichen Kühleffekt zu erreichen, gibt es im Stand der Technik bereits zahlreiche Vorschläge.LED lamps have a much longer life compared to conventional incandescent lamps and also a significantly lower energy consumption. Compared with energy-saving lamps, the average life of LED lamps is much higher with about the same energy consumption, so that the usually higher manufacturing costs are justified for LED lamps. For LED lamps, the difficulty is that the LED elements must be cooled at high power. For dissipating the heat heatsinks are usually used, which passively or actively cool. In order to achieve the required cooling effect with a simultaneously compact design, there are already numerous proposals in the prior art.

Die US 2005/0174780 offenbart eine LED-Lampe, die einen Kühlkörper aufweist, der von einem in diesen eingebauten Lüfter kühlbar ist. Der Kühlkörper besitzt sich radial erstreckende Wände, zwischen denen die vom Lüfter erzeugte Luft hindurchströmen kann, um die von LED-Bauelementen erzeugte Wärme abzuführen.The US 2005/0174780 discloses an LED lamp having a heat sink that is coolable by a built-in fan. The heat sink has radially extending walls between which the air generated by the fan can flow to dissipate the heat generated by LED devices.

Die US 2006/0193139 offenbart eine LED-Lampe, die ebenfalls einen Kühlkörper sowie einen Lüfter aufweist. Der Lüfter saugt radial Luft an und gibt diese axial an den Kühlkörper ab.The US 2006/0193139 discloses an LED lamp which also has a heat sink and a fan. The fan draws in radially air and delivers it axially to the heat sink.

Die EP 1 998 108 offenbart eine LED-Lampe, die ein im Wesentlichen rohrförmiges Gehäuse aufweist, in dem ein Lüfter und ein Kühlkörper angeordnet sind. Bei laufendem Lüfter wird im Gehäuse ein Luftstrom erzeugt, der wiederum einen weiteren durch Seitenöffnungen einströmenden Luftstrom erzeugt.The EP 1 998 108 discloses an LED lamp having a substantially tubular housing in which a fan and a heat sink are arranged. In progress Fan air flow is generated in the housing, which in turn generates another flowing through side openings airflow.

Die WO 2008/103676 offenbart eine LED-Lampe, die zur Erzeugung eines Luftstromes eine oszillierende Platte aufweist.The WO 2008/103676 discloses an LED lamp having an oscillating plate for generating an airflow.

Die US 2008/0212332 offenbart eine LED-Lampe, die mit einer Flüssigkeit und insbesondere Wasser gekühlt wird.The US 2008/0212332 discloses an LED lamp that is cooled with a liquid, and especially water.

Der Erfindung liegt die Aufgabe zugrunde, eine Kühlvorrichtung der genannten Art zu schaffen, die sich insbesondere zum Kühlen einer LED-Lampe eignet und die bei gleicher oder höherer Leistung noch kompakter ausgebildet werden kann.The invention has for its object to provide a cooling device of the type mentioned, which is particularly suitable for cooling an LED lamp and can be made even more compact at the same or higher performance.

Die Aufgabe ist bei einer gattungsgemässen Kühlvorrichtung dadurch gelöst, dass der Kühlkörper von der radialen Richtung abweichende Leitschaufeln aufweist und als einteiliges Formstück ausgebildet ist. Die von der radialen Richtung abweichenden Leitschaufeln ermöglichen eine optimale Luftumlenkung und eine grösstmögliche Oberflächenkontaktierung des Kühlkörpers. Die Ausbildung der Leitschaufeln hat im Wesentlichen den Vorteil, dass ein direkter Zugang zum Lüfterrand verhindert ist.The object is achieved in a generic cooling device in that the heat sink has deviating from the radial direction vanes and is formed as a one-piece mold. The deviating from the radial direction vanes allow optimal air deflection and the greatest possible surface contact of the heat sink. The design of the guide vanes has the substantial advantage that direct access to the fan edge is prevented.

Eine besonders kompakte Bauweise ergibt sich dann, wenn gemäss einer Weiterbildung der Erfindung der Lüfter in den Kühlkörper integriert ist.A particularly compact design results when, according to a development of the invention, the fan is integrated into the heat sink.

Eine besonders wirksame Kühlwirkung und grosse Oberflächenkontaktierung ergibt sich dann, wenn gemäss einer Weiterbildung der Erfindung die Leitschaufeln spiralförmig ausgebildet sindA particularly effective cooling effect and large surface contact arises when, according to an embodiment of the invention, the guide vanes are formed spirally

Gemäss einer Weiterbildung der Erfindung ist vorgesehen, dass die Leitschaufeln an einer Platte angeformt sind, die eine Aussenseite aufweist, auf welcher die zu kühlenden Bauelemente befestigbar sind. Die Leitschaufeln können sich in der einen axialen Richtung oder auch in beiden axialen Richtungen dieser Platte erstrecken. Die Platte ist vorzugsweise eben, beispielsweise quadratisch oder rund.According to a development of the invention it is provided that the guide vanes are formed on a plate having an outer side on which the components to be cooled can be fastened. The vanes may extend in one axial direction or in both axial directions of this plate. The plate is preferably flat, for example square or round.

Gemäss einer Weiterbildung der Erfindung ist vorgesehen, dass der Kühlkörper im Wesentlichen birnenförmig ausgebildet ist. Ein solcher Kühlkörper eignet sich insbesondere für eine LED-Lampe.According to a development of the invention, it is provided that the heat sink is substantially pear-shaped. Such a heat sink is particularly suitable for an LED lamp.

Nach einer Weiterbildung der Erfindung ist vorgesehen, dass der Lüfter eine Motorenplatine aufweist und dass der Kühlkörper einen Support für die Lageraufnahme und die Befestigung der Motorenplatine aufweist. Dies ermöglicht ebenfalls eine sehr kompakte Bauweise und kostengünstige Herstellung.According to a development of the invention it is provided that the fan has an engine board and that the heat sink has a support for the bearing support and the attachment of the motor board. This also allows a very compact design and cost-effective production.

Die Erfindung betrifft zudem eine Lampe mit einer erfindungsgemässen Kühlvorrichtung. Die Kühlvorrichtung bildet hierbei eine eingebaute Einheit aus dem Kühlkörper und dem Lüfter. Die Lampe ist insbesondere eine LED-Lampe, wobei die LED-Elemente direkt auf dem Kühlkörper befestigt sind. Die Verwendung der Kühlvorrichtung für eine Lampe ist die bevorzugte Anwendung. Grundsätzlich könnte die Erfindungsgemässe Kühlvorrichtung auch zum Kühlen anderer Bauelemente, insbesondere elektronischer Bauelemente, verwendet werden.The invention also relates to a lamp with a cooling device according to the invention. The cooling device forms a built-in unit of the heat sink and the fan. The lamp is in particular an LED lamp, wherein the LED elements are mounted directly on the heat sink. The use of the cooling device for a lamp is the preferred application. In principle, the cooling device according to the invention could also be used for cooling other components, in particular electronic components.

Weitere vorteilhafte Merkmale ergeben sich aus den abhängigen Patentansprüchen, der nachfolgenden Beschreibung sowie der Zeichnungen.Further advantageous features emerge from the dependent claims, the following description and the drawings.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert. Es zeigen:

Figur 1
einen Axialschnitt durch eine erfindungsgemässe Kühlvorrichtung.
Figur 2
eine räumliche Ansicht der Kühlvorrichtung gemäss Figur 1.
Figur 3
eine weitere räumliche Ansicht der Kühlvorrichtung gemäss Figur 1.
Figuren 4-7
jeweils eine räumliche Ansicht einer Variante der erfindungsgemässen Kühlvorrichtung.
Figur 8
teilweise geschnitten eine erfindungsgemässe Lampe.
Embodiments of the invention are explained below with reference to the drawings. Show it:
FIG. 1
an axial section through a cooling device according to the invention.
FIG. 2
a spatial view of the cooling device according to FIG. 1 ,
FIG. 3
a further spatial view of the cooling device according to FIG. 1 ,
Figures 4-7
in each case a spatial view of a variant of the inventive cooling device.
FIG. 8
partially cut a lamp according to the invention.

Die Figuren 1 bis 3 zeigen eine Kühlvorrichtung 1, die einen Kühlkörper 6 aufweist, der eine Platte 9 besitzt, an welcher spiralförmig ausgebildete Leitschaufeln angeformt sind. Die Platte 9 besitzt eine Fläche 10, die sich vertikal zur Längsrichtung des Kühlkörpers 1 erstreckt und auf welche Bauelemente, beispielsweise LED-Bauelemente, befestigt werden können. An einer rückseitigen Fläche 11 der Platte 9 ist ein Lager 15 angeordnet, in dem ein Lüfter 12 gelagert ist. Der Lüfter 12 befindet sich in einer Ausnehmung 14 des Kühlkörpers 6.The FIGS. 1 to 3 show a cooling device 1, which has a heat sink 6, which has a plate 9, on which spiral-shaped guide vanes are formed. The plate 9 has a surface 10 which extends vertically to the longitudinal direction of the heat sink 1 and on which components, such as LED components, can be attached. On a rear surface 11 of the plate 9, a bearing 15 is arranged, in which a fan 12 is mounted. The fan 12 is located in a recess 14 of the heat sink 6.

Zwischen den Leitschaufeln 7 sind Luftkanäle 8 angeordnet, die sich axial und nach aussen erstrecken. Diese Luftkanäle 8 erstrecken sich wie ersichtlich axial über die Flächen 10 und 11 hinaus. Ein vom Lüfter 12 erzeugter Luftstrom wird durch die Leitschaufeln 7 in radialer Richtung umgeleitet. Eine Ausströmung der Luft erfolgt bereits auf der Höhe eines Lüfterrades 13 des Lüfters 12. Dadurch wird die Platte 9 von den diese umgebenden Leitschaufeln 17 mit hoher Leistung gekühlt. Der Kühlkörper 6 wird somit von durchströmender Luft aktiv gekühlt. Mit dem Lüfter 12 bildet der Kühlkörper 6 eine Einheit, die beispielsweise gemäss Figur 8 in eine Lampe 23, insbesondere eine LED-Lampe, eingebaut werden kann. Der Lüfter 12 besitzt eine Motorplatine 14, auf welcher das Lüfterrad 13 gelagert ist. Solche Motorplatinen 14 sind an sich bekannt. Der Lüfter 12 ist vorzugsweise gehäuselos in die Ausnehmung 18 eingesetzt. Das Lüfterrad 13 ist ein axiales Flügelrad. Der erzeugte Luftstrom ist aber nicht ausschliesslich axial, sondern teilweise auch radial. Die Aussenform des Kühlkörpers 6 ist wie ersichtlich etwa birnenförmig. Diese Form eignet sich insbesondere für die Anwendung des Kühlkörpers 6 zum Kühlen der in Figur 8 gezeigten Lampe 22.Between the guide vanes 7 air channels 8 are arranged, which extend axially and outwardly. As can be seen, these air ducts 8 extend axially beyond the surfaces 10 and 11. An airflow generated by the fan 12 is diverted by the vanes 7 in the radial direction. An outflow of air takes place already at the height of a fan 13 of the fan 12. Thus, the plate 9 is cooled by the surrounding vanes 17 with high power. The heat sink 6 is thus actively cooled by air flowing through. With the fan 12, the heat sink 6 forms a unit, for example, according to FIG. 8 in a lamp 23, in particular an LED lamp, can be installed. The fan 12 has a motor board 14 on which the fan 13 is mounted. Such motor boards 14 are known per se. The fan 12 is preferably used without a housing in the recess 18. The fan 13 is an axial impeller. The generated air flow is not only axial, but also partially radial. The outer shape of the heat sink 6 is as seen about pear-shaped. This form is particularly suitable for the application of the heat sink 6 for cooling the in FIG. 8 shown lamp 22.

Die Figur 4 zeigt eine Kühlvorrichtung 2, die Leitschaufeln 16 aufweist, die in radialer Richtung kurvenförmig sich nach aussen erstrecken und die auf einer ebenen Platte 17 angeformt sind. In einer Ausnehmung 19 ist der Lüfter 12 angeordnet, der hier ebenfalls ein axiales Lüfterrad 13 aufweist. Ein vom Lüfterrad 12 erzeugter radialer Luftstrom wird somit durch die gebogenen Leitschaufeln 16 kurvenförmig umgelenkt. Dadurch ergibt sich auch in diesem Fall eine grosse Kühloberfläche an den Leitschaufeln 16. Die ausströmende Luft kühlt ebenfalls direkt die Platte 17 und Flächen 24, die sich jeweils zwischen zwei benachbarten Leitschaufeln 16 erstrecken. Die Kühlvorrichtung 2 bildet ebenfalls eine Einheit, die in ein Gerät, beispielsweise eine LED-Lampe, einbaubar ist.The FIG. 4 shows a cooling device 2, the guide vanes 16 which extend in the radial direction outwardly curved and which are integrally formed on a flat plate 17. In a recess 19 of the fan 12 is arranged, which also has an axial fan 13 here. A generated by the fan 12 radial air flow is thus deflected by the curved vanes 16 curved. This also results in this case, a large cooling surface on the vanes 16. The outflowing air also directly cools the plate 17 and surfaces 24, each extending between two adjacent vanes 16. The cooling device 2 also forms a unit which can be installed in a device, for example an LED lamp.

Die in Figur 5 gezeigte Kühlvorrichtung 3 unterscheidet sich von derjenigen gemäss Figur 4 durch die rechteckige und insbesondere quadratische Ausbildung. Die hier vorgesehenen Leitschaufeln 20 sind ebenfalls in radialer Richtung gebogen.In the FIG. 5 shown cooling device 3 differs from that according to FIG. 4 by the rectangular and in particular square training. The guide vanes 20 provided here are likewise bent in the radial direction.

Die in Figur 6 gezeigte Kühlvorrichtung 4 entspricht weitgehend der Kühlvorrichtung 3 gemäss Figur 5, wobei hier ein standardmässiger Lüfter 12' eingebaut ist, der ein Gehäuse 25 aufweist.In the FIG. 6 shown cooling device 4 largely corresponds to the cooling device 3 according to FIG. 5 , wherein here a standard fan 12 'is installed, which has a housing 25.

Die in Figur 7 gezeigte Kühlvorrichtung 5 entspricht weitgehend der Kühlvorrichtung 2 gemäss Figur 4, wobei hier jedoch ein Lüfter 12' vorgesehen ist, der ein Radiallüfter ist. Entsprechend ist ein Lüfterrad 21 vorgesehen, das vor allem einen radialen Luftstrom erzeugt.In the FIG. 7 Cooling device 5 shown largely corresponds to the cooling device 2 according to FIG. 4 , but here is a fan 12 'is provided, which is a radial fan. Accordingly, a fan 21 is provided, which generates above all a radial air flow.

Die in Figur 8 gezeigte Lampe 22 besitzt beispielsweise eine übliche Fassung 26, sowie eine eingebaute Kühlvorrichtung 1. Auf der Fläche 10 der Kühlvorrichtung 1 sind mehrere LED-Elemente 23 angeordnet. Diese Elemente 23 können direkt oder auch indirekt mit der Platte 9 verbunden sein, die wie oben erläutert vom Lüfter 12 aktiv gekühlt wird. Die von den LED-Elementen 23 erzeugte Wärme wird somit über die Platte 9 der Kühlvorrichtung abgeführt.In the FIG. 8 For example, shown lamp 22 has a conventional socket 26, and a built-in cooling device 1. On the surface 10 of the cooling device 1 a plurality of LED elements 23 are arranged. These elements 23 may be connected directly or indirectly to the plate 9 which, as explained above, is actively cooled by the fan 12. The heat generated by the LED elements 23 is thus dissipated via the plate 9 of the cooling device.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1.1. Kühlvorrichtungcooler 2.Second Kühlvorrichtungcooler 3.Third Kühlvorrichtungcooler 4.4th Kühlvorrichtungcooler 5.5th Kühlvorrichtungcooler 6.6th Kühlkörperheatsink 7.7th Leitschaufelnvanes 8.8th. Luftkanäleair ducts 9.9th Platteplate 10.10th Flächearea 11.11th Flächearea 12.12th LüfterFan 13.13th Lüfterradfan 14.14th Motorplatinemotor board 15.15th Lagercamp 16.16th Leitschaufelnvanes 17.17th Platteplate 18.18th Ausnehmungrecess 19.19th Ausnehmungrecess 20.20th Leitschaufelnvanes 21.21st Lüfterradfan 22.22nd Lampelamp 23.23rd LED-ElementLED element 24.24th Flächearea 25.25th Gehäusecasing 26.26th Fassungversion

Claims (9)

Kühlvorrichtung, insbesondere für eine LED-Lampe, mit einem ein Lüfterrad (21) aufweisenden Lüfter (12) und einem Kühlkörper (6), der zur Kühlung bei drehendem Lüfterrad (21) durchströmt ist, dadurch gekennzeichnet, dass der Kühlkörper (6) von der radialen Richtung abweichende Leitschaufeln (7, 16, 20) aufweist und als einteiliges Formstück ausgebildet ist.Cooling device, in particular for an LED lamp, with a fan (21) having a fan (12) and a heat sink (6), which is flowed through for cooling with rotating fan wheel (21), characterized in that the heat sink (6) of the radial direction deviating vanes (7, 16, 20) and is formed as a one-piece molding. Kühlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Lüfter (12) im Kühlkörper (6) integriert ist.Cooling device according to claim 1, characterized in that the fan (12) in the heat sink (6) is integrated. Kühlvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Leitschaufeln (7) spiralförmig ausgebildet sind.Cooling device according to claim 1 or 2, characterized in that the guide vanes (7) are formed spirally. Kühlvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Leitschaufeln (7, 16, 20) an einer Platte (9, 17) angeformt sind, die eine Aussenseite (10) aufweist, auf welcher die zu kühlenden Bauelemente befestigbar sind.Cooling device according to one of claims 1 to 3, characterized in that the guide vanes (7, 16, 20) on a plate (9, 17) are integrally formed, which has an outer side (10) on which the components to be cooled can be fastened. Kühlvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Kühlkörper (6) im Wesentlichen birnenförmig ausgebildet ist.Cooling device according to one of claims 1 to 4, characterized in that the cooling body (6) is substantially pear-shaped. Kühlvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Lüfter mittels eines Temperatursensors zur Geräuschminderung geregelt ist.Cooling device according to one of claims 1 to 5, characterized in that the fan is controlled by means of a temperature sensor for noise reduction. Kühlvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Lüfter eine Motorenplatine aufweist und dass der Kühlkörper einen Support für die Lageraufnahme und die Befestigung der Motorenplatine aufweist.Cooling device according to one of claims 1 to 5, characterized in that the fan has an engine board and that the cooling body has a support for the bearing support and the attachment of the motor board. Lampe mit einer Kühlvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Kühlvorrichtung eine eingebaute Einheit aus dem Kühlkörper und dem Lüfter bildet.Lamp having a cooling device according to one of claims 1 to 7, characterized in that the cooling device is a built-in unit of the Heatsink and the fan forms. Lampe nach Anspruch 8, dadurch gekennzeichnet, dass sie eine LED-Lampe ist und dass die LED-Elemente direkt auf dem Kühlkörper (6) befestigt sind.A lamp according to claim 8, characterized in that it is an LED lamp and that the LED elements are mounted directly on the heat sink (6).
EP09405231A 2009-12-23 2009-12-23 Cooling device Withdrawn EP2339234A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09405231A EP2339234A1 (en) 2009-12-23 2009-12-23 Cooling device
US12/970,335 US20110146966A1 (en) 2009-12-23 2010-12-16 Cooling Device
JP2010285437A JP2011135081A (en) 2009-12-23 2010-12-22 Cooling device
CN2010106223081A CN102109157A (en) 2009-12-23 2010-12-23 Cooling device

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EP09405231A EP2339234A1 (en) 2009-12-23 2009-12-23 Cooling device

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EP2339234A1 true EP2339234A1 (en) 2011-06-29

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EP (1) EP2339234A1 (en)
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CN (1) CN102109157A (en)

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US20110146966A1 (en) 2011-06-23
CN102109157A (en) 2011-06-29

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