EP2235436A1 - Dispositif d'éclairage à led avec liquide de refroidissement - Google Patents

Dispositif d'éclairage à led avec liquide de refroidissement

Info

Publication number
EP2235436A1
EP2235436A1 EP08871542A EP08871542A EP2235436A1 EP 2235436 A1 EP2235436 A1 EP 2235436A1 EP 08871542 A EP08871542 A EP 08871542A EP 08871542 A EP08871542 A EP 08871542A EP 2235436 A1 EP2235436 A1 EP 2235436A1
Authority
EP
European Patent Office
Prior art keywords
led
heat sink
cooling liquid
membrane
heat
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Withdrawn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
EP08871542A
Other languages
German (de)
English (en)
Inventor
Gerald Ladstätter
Erich Schwärzler
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.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
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 Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP2235436A1 publication Critical patent/EP2235436A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
    • 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
    • F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
    • 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
    • F21V29/56—Cooling arrangements using liquid coolants
    • F21V29/58—Cooling arrangements using liquid coolants characterised by the coolants
    • 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
    • F21V29/73—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements being adjustable with respect to each other, e.g. hinged
    • 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
    • F21V29/745—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades the fins or blades being planar and inclined with respect to the joining surface from which the fins or blades extend
    • 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
    • F21V29/75—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
    • 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
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-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
    • 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
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/767—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having directions perpendicular to the light emitting 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
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames
    • 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 luminaire with an LED (light-emitting diode) and a heat sink for cooling the LED.
  • heatsinks are usually used that are comparatively large in accordance with this function.
  • the LED and the heat sink are arranged rigidly relative to each other and either the LED and the heat sink can be adjusted together or an optical element, which is arranged in the emission direction in front of the LED, can be adjusted.
  • the invention is based on the object to provide an LED lamp with an effective cooling of the LED, in which the direction of the light output can be changed and which can be carried out small volume and is easy to manufacture.
  • a luminaire is provided with at least one LED and a heat sink for cooling the LED.
  • the LED is arranged pivotably relative to the heat sink and the lamp further comprises a cooling liquid for heat transfer from the LED to the heat sink.
  • the LED can be pivoted with respect to the heat sink, a separate optical element for changing the direction of the light output is not required;
  • the heat sink does not have to be pivotable per se, so that an overall comparatively small size of the luminaire can be realized.
  • a good heat dissipation from the LED can be ensured by using the cooling liquid Swiveling mechanism of the LED would be provided with respect to the heat sink, can be made possible by the use of the cooling liquid significantly larger contact surfaces for heat transfer, thus in principle a much more effective heat transfer can be achieved because a corresponding pivot mechanism would have several parts that only point or line contacts For the components that are provided in the luminaire according to the invention for pivoting the LED, therefore, only relatively small mutual contact surfaces must be provided and also are relatively small forces on the These contact surfaces act sufficiently.
  • the luminaire further comprises a receiving space for the cooling liquid, wherein the receiving space is partially bounded by the heat sink and partially by a membrane.
  • the membrane is advantageously connected to the LED such that upon pivoting of the LED, the membrane is deformed.
  • a flexibility can be achieved with which the pivoting of the LED relative to the heat sink is possible.
  • the membrane by using the membrane, the number of components that are provided for pivoting the LED can be kept very small; This is conducive to a particularly direct heat flow from the LED to the heat sink.
  • the LED is advantageously arranged on a circuit board and the
  • the LED it is also advantageously possible for the LED to be arranged on a circuit board, wherein the luminaire furthermore has a carrier element for the circuit board and the receiving space is furthermore partially bounded by the carrier element and / or partially by the circuit board.
  • the carrier element further form a reflector for the LED.
  • the receiving space is limited exclusively by the heat sink, the membrane and the carrier element. It can also for example, be provided that the receiving space is limited only by the heat sink, the membrane, the support member and the board.
  • the cooling liquid comprises water.
  • water has a comparatively high heat capacity, in particular an approximately four times greater heat capacity than air, and can thus absorb a corresponding amount of heat.
  • the thermal conductivity of water at 0.6 W / mK is significantly better than that of air (0.024 WM).
  • the cooling liquid contains at least one additive for increasing the thermal conductivity.
  • the luminaire further comprises at least one heat pipe for heat transfer from the LED to the cooling liquid and / or to the heat sink.
  • the heat pipe can advantageously be arranged in a positionally stable manner relative to the LED.
  • the lamp further comprises locking means for locking the LED relative to the heat sink.
  • a part of the locking means may be formed by the heat sink.
  • the locking means may comprise locking elements. If a heat pipe is provided, a part of the locking means may be formed by the heat pipe.
  • FIG. 1 is a sketch of a first embodiment of a lamp according to the invention in a cutaway form
  • 6 is a sketch of a variant of the restraint
  • FIG. 7 shows a sketch of a further variant of the restraining means.
  • a first embodiment of a ertlndungsdorfen lamp in the form of an LED spot is sketched in the cut state.
  • the lamp has an LED 2, which serves as a light source. It can also be provided as a light source multiple LEDs. With an arrow P while the main emission of the LED 2 and the lamp is outlined.
  • the LED 2 may be a so-called high-power LED.
  • the lamp has a heat sink 4, which serves to cool the LED 2 or, where appropriate, the LEDs in the operating state.
  • the heat sink 4 may have cooling fins 5.
  • the LED 2 is arranged so that it can be pivoted relative to the heat sink 4. By such pivoting, the direction of the light output of the lamp can be selectively changed without the heat sink 4 must be changed in its position.
  • Various possibilities for realizing the pivotability of the LED 2 with respect to the heat sink 4 are shown below.
  • the lamp has a cooling liquid 8, which serves for heat transfer from the LED 2 to the heat sink 4.
  • the heat transfer from the LED 2 to the heat sink 4 is thus at least partially provided by the cooling liquid 8.
  • the cooling liquid 8 By using the cooling liquid 8, a particularly large-area and therefore effective heat transfer from the LED 2 to the heat sink 4 is made possible.
  • the cooling liquid 8 may include water.
  • the cooling liquid 8 may be water.
  • other liquids that allow good heat transfer as a cooling liquid possible.
  • the cooling liquid 8 may contain a known additive, which serves to increase the thermal conductivity. Of course, several such additives may be provided.
  • the luminaire has a closed receiving space 10 for the cooling liquid 8.
  • the receiving space 10 may be partially bounded by the heat sink 4 and partially by a membrane 6.
  • the membrane 6 is provided sufficiently tight for the cooling liquid 8. If the cooling liquid 8 is water, the membrane 6 is therefore provided watertight.
  • the heat sink 4 has a preferably cylindrical side wall 20 which is arranged in a ring-shaped manner around the LED 2, the side wall 20 having an edge region at the end region pointing in the direction of the light emission of the LED 2 22, which is provided for connection to the membrane 6.
  • the membrane 6 is substantially annular and has an outer edge region 61 and an inner edge region 62. With its outer edge region 61, the membrane 6 is firmly and at least substantially impermeable to the cooling liquid 8 directly connected to the edge region 22 of the side wall 20 of the heat sink 4. With its inner edge region 62, the membrane is fixed directly or indirectly fixed and at least substantially impermeable to the cooling liquid 8 with the LED 2.
  • the membrane 6 is made of an elastic material, so that the membrane 6 is deformed when the LED 2 is pivoted relative to the heat sink 4.
  • the membrane 6 is "freely adjustable" and for this purpose preferably has at least one wave-shaped section, Furthermore, the membrane 6 is designed to be prestressed, thereby facilitating a lockability of the LED 2 in a specific position relative to the heat sink 4 ,
  • the LED 2 is arranged on a circuit board 12 in the exemplary embodiment.
  • a carrier element 14 for the circuit board 12 is furthermore provided, wherein the receiving space 10 of the cooling liquid 8 is furthermore partially bounded by the carrier element 14.
  • the receiving space 10 of the heat sink 4 is limited.
  • the boundary surfaces of the heat sink 4 and the support member 14 to the receiving space 10 are provided tightly for the cooling liquid 8. If the cooling liquid 8 is water, the area mentioned can therefore be provided watertight.
  • FIG. 2a A variant is sketched in FIG. 2a; In this case, it is provided that the membrane 6 is connected with its inner edge region 62 directly to the circuit board 12 and the circuit board 12 also partially limits the receiving space 10, so that a direct Contact between the back of the board 12 (ie, the side of the board 12, which is opposite to the LED 2) and the cooling liquid 8 is given. In this variant, therefore, no support element 14 is provided and therefore this configuration represents in a certain sense with respect to the heat transfer the "ideal configuration".
  • the board 12 partially limits the receiving space 10, but is Furthermore, a carrier element 14 is provided for the circuit board 12, which likewise partially delimits the receiving space 10. The circuit board 12 is held at its periphery by the carrier element 14.
  • the circuit board 12 is held by the carrier element 14, However, the board 12 does not contribute to the limitation of the receiving space 19.
  • a particularly good heat-conducting material for example aluminum, is provided for the carrier element 14.
  • the carrier element 14 forms a reflector 13 for the LED 2, as sketched in FIG. 1, for example.
  • the carrier element 14 has a flange-like edge region 15, which is connected to the membrane 6.
  • the membrane 6 extends essentially along the inside of the side wall 20 of the heat sink 4 and is thus protected from external influences by it.
  • a neutral position of the LED 2 with respect to the heat sink 4 is possible in this way, in which the membrane 6 from outside the lamp is virtually impossible to see, as they in particular from the side wall 20 of the heat sink 4 and the edge region 15 of the support member 14 is hidden.
  • the cooling body 4 has at its boundary surface to the receiving space 10 further cooling ribs 5 'for further enlarging the contact surface between the cooling liquid 8 and the cooling body 4.
  • the heat sink 4 has a region which surrounds the LED 2 in an annular manner.
  • a so-called heat pipe 18 known per se is provided for further improving the heat conduction from the LED 2 to the cooling liquid 8 or to the cooling body 4.
  • the heat pipe 18 is an elongated, closed, hollow tube, which is partially filled with a liquid; the liquid accumulates at the warmer end of the tube and vaporizes accordingly, with heat dissipated at the opposite end of the tube.
  • the use of a heat pipe 18 is particularly suitable if the distance between the LED 2 and the cooling liquid 8 is comparatively large, as is the case, for example, in the variant shown in FIG.
  • a possible connection between the heat pipe 18 and the LED 2 is outlined in Fig. 2d.
  • a carrier element 30 is provided for the heat pipe 18, which is arranged between the inner edge region 62 of the membrane 6 and the heat pipe 18.
  • the LED 2 can be arranged fixed position relative to the heat pipe 18.
  • locking means 16 which serve to lock the LED 2 relative to the heat sink 4 in different relative positions.
  • the locking means 16 may for example have projections and / or recesses 50, which are arranged on the heat sink 4, in which corresponding engagement elements 51, which are fixedly connected to the LED 2, can engage latching.
  • the recesses 50 are arranged on the boundary surface of the heat sink 4 to the receiving space 10 of the cooling liquid 8; the engagement elements 51 are arranged on the carrier element 14 of the circuit board 12.
  • the carrier element 14 is correspondingly extended at its end region, which faces away from the main emission direction P, so that cooperation of the engagement elements 51 with the depressions 50 is possible in the above-mentioned sense.
  • the support member 14 is widened at its end portion, which is intended for direct contact with the heat sink 4, so that the possibility of transferring heat at this point is improved.
  • the thermal conductivity of the carrier element 14 is greater than that of the cooling liquid.
  • the carrier element 14 consists of aluminum.
  • the thermal conductivity of aluminum is about 237 W / mK, that of water about 0.6 W / mK.
  • a variant of the locking means 16 is outlined.
  • two arcuate, mutually orthogonal tooth combs are provided, which can interlock latching; one of the two tooth combs is arranged on the heat sink 4, the other on the support element 14th
  • the heat pipe 18 forms part of the locking means 16.
  • the heat pipe 18 directly contacts the heat sink 4 with that end region which is opposite the LED 2 or the circuit board 12;
  • annular recesses are provided on the heat sink 4, in which the heat pipe 18 can engage.
  • the locking means can comprise a projection which is arranged on the heat sink 4 and depressions which are arranged on the carrier element 14, this projection and these depressions being provided for this purpose, latching together.
  • the use of the cooling liquid 8 for the luminaire according to the invention generally results in a preferred orientation with respect to an effective heat transport from the LED 2 to the cooling body 4. If the heat sink 4 is arranged above the LED 2, the heat transfer is more effective than in the opposite case. It results in this sense, a preferred mounting position for the lamp according to the invention.
  • the advantage of using the iMembrane 6 is that thereby the number of components that pivot the LED 2 required can be reduced.
  • the cooling liquid 8 By the use of the cooling liquid 8 mecanictlambaige contact areas for the heat transfer from the LED 2 to the heat sink 4 allows, so that a particularly effective heat dissipation from the LED 2 is possible.
  • a cooling liquid 8 with a high heat capacity can be selected, for example water, so that the cooling liquid 8 itself can absorb heat from the LED 2 to a significant degree.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

L'invention concerne un dispositif d'éclairage ayant une LED (2) et un corps de refroidissement (4) pour le refroidissement de la LED (2). La LED (2) est agencée de manière pivotante en face du corps de refroidissement (4). De plus, le dispositif d'éclairage comprend un liquide de refroidissement (8), par exemple de l'eau, pour transférer la chaleur de la LED (2) au corps de refroidissement (4). Un espace de réception (10) peut être prévu pour le liquide de refroidissement (8), l'espace étant délimité par le corps de refroidissement (4), une membrane (6) et un élément de support (14) pour une platine (12) de la LED (2). Pour arrêter la LED (2) dans une position précise face au corps de refroidissement (4), des moyens d'arrêt, par exemple des éléments d'accrochage en forme de cavités (50), et des éléments d'enclenchement (51) peuvent être prévus. Etant donné que la LED (2) peut pivoter par rapport au corps de refroidissement (4), un élément optique séparé destiné à modifier la direction de la sortie lumineuse n'est pas nécessaire ; en outre, le corps de refroidissement (4) lui-même ne doit pas être agencé de manière pivotante afin qu'il soit possible d'obtenir un dispositif d'éclairage avec des dimensions globalement et comparativement petites.
EP08871542A 2008-01-23 2008-10-17 Dispositif d'éclairage à led avec liquide de refroidissement Withdrawn EP2235436A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008005697A DE102008005697A1 (de) 2008-01-23 2008-01-23 LED-Leuchte mit Kühlflüssigkeit
PCT/EP2008/008814 WO2009092405A1 (fr) 2008-01-23 2008-10-17 Dispositif d’éclairage à led avec liquide de refroidissement

Publications (1)

Publication Number Publication Date
EP2235436A1 true EP2235436A1 (fr) 2010-10-06

Family

ID=40094362

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08871542A Withdrawn EP2235436A1 (fr) 2008-01-23 2008-10-17 Dispositif d'éclairage à led avec liquide de refroidissement

Country Status (3)

Country Link
EP (1) EP2235436A1 (fr)
DE (1) DE102008005697A1 (fr)
WO (1) WO2009092405A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE202009017433U1 (de) 2009-12-23 2010-05-20 Diana Electronic-Systeme Gmbh LED-Leuchte mit Kühlkörper
DE202010004776U1 (de) * 2010-04-09 2011-09-02 Zumtobel Lighting Gmbh Leuchte mit schwenkbarer LED
CN102384448A (zh) * 2010-08-30 2012-03-21 奥斯兰姆有限公司 散热装置和具有散热装置的发光二极管照明装置
CN102691948B (zh) 2011-03-23 2016-04-20 欧司朗股份有限公司 能够多方向调节照射角度的筒灯
WO2012172479A2 (fr) * 2011-06-17 2012-12-20 Koninklijke Philips Electronics N.V. Raccord à transfert thermique pivotant
CN102878490B (zh) * 2012-09-12 2015-12-23 东莞勤上光电股份有限公司 一种空气对流散热的led射灯
GB2522419B (en) * 2014-01-22 2016-05-11 Collingwood Lighting Ltd Lighting unit
CN203893076U (zh) * 2014-01-24 2014-10-22 武良举 光向调整装置
FR3029607A1 (fr) * 2014-12-08 2016-06-10 Valeo Vision Couplage thermique avec matiere fluide, pateuse ou granulaire pour source lumineuse mobile
GB201512014D0 (en) * 2015-07-09 2015-08-19 Aurora Ltd IP rated luminaires
ITUB20153840A1 (it) * 2015-09-23 2017-03-23 Corlight S R L Apparecchio di illuminazione
CN206093753U (zh) * 2016-09-28 2017-04-12 佛山市威得士灯饰电器有限公司 可调光照角度的灯具
GB2570174B (en) * 2018-07-10 2020-02-05 Collingwood Lighting Ltd Lighting unit
WO2024188621A1 (fr) * 2023-03-10 2024-09-19 Signify Holding B.V. Commande de direction de faisceau lumineux basée sur un électroaimant

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EP1357335A2 (fr) * 2002-04-23 2003-10-29 Nichia Corporation Dispositif d'éclairage

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US5161884A (en) * 1990-04-30 1992-11-10 The Regents Of The University Of California Thermal element for maintaining minimum lamp wall temperature in fluorescent fixtures
JP4281517B2 (ja) * 2003-11-12 2009-06-17 パナソニック電工株式会社 照明器具
DE102005013208A1 (de) * 2004-03-21 2005-10-27 Späth, Christian, Dipl.-Designer LED-Leuchtdioden Leuchte
JP2006156238A (ja) * 2004-11-30 2006-06-15 Toshiba Lighting & Technology Corp 照明装置
DE202005008411U1 (de) * 2005-05-30 2005-07-28 Huang, Hsien-Jung, Yung-Ho Kühlkörper für ein LED-Leuchtelement

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Publication number Priority date Publication date Assignee Title
EP1357335A2 (fr) * 2002-04-23 2003-10-29 Nichia Corporation Dispositif d'éclairage

Also Published As

Publication number Publication date
DE102008005697A1 (de) 2009-07-30
WO2009092405A1 (fr) 2009-07-30

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