EP2556298B1 - Luminaire having a pivotable led - Google Patents

Luminaire having a pivotable led Download PDF

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Publication number
EP2556298B1
EP2556298B1 EP11713487.4A EP11713487A EP2556298B1 EP 2556298 B1 EP2556298 B1 EP 2556298B1 EP 11713487 A EP11713487 A EP 11713487A EP 2556298 B1 EP2556298 B1 EP 2556298B1
Authority
EP
European Patent Office
Prior art keywords
heat sink
adjusting means
light source
luminaire according
luminaire
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.)
Not-in-force
Application number
EP11713487.4A
Other languages
German (de)
French (fr)
Other versions
EP2556298A1 (en
Inventor
Gerald Ladstätter
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 EP2556298A1 publication Critical patent/EP2556298A1/en
Application granted granted Critical
Publication of EP2556298B1 publication Critical patent/EP2556298B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V29/76—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
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/26—Pivoted arms
    • F21V21/28—Pivoted arms adjustable in more than one plane
    • 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
    • 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
    • F21V21/15—Adjustable mountings specially adapted for power operation, e.g. by remote control
    • 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
    • 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 a light source, which has at least one LED (light-emitting diode) and with a cooling body for cooling the LED, in which the light source is arranged pivotably relative to the cooling body.
  • a light source which has at least one LED (light-emitting diode) and with a cooling body for cooling the LED, in which the light source is arranged pivotably relative to the cooling body.
  • Such a light is from the DE 10 2008 007 647 A1 known.
  • the LED can be aligned differently by pivoting relative to the heat sink; In this way, the direction in which light is mainly radiated from the luminaire can be changed.
  • a manual adjustment of the LED is required. Manual adjustment can cause problems, such as when very small and precise changes in the main direction of radiation are desired or when the lamp is arranged to operate outside the usual manual range of a user.
  • the invention has for its object to provide a corresponding lamp in which the possibilities for adjusting the main emission are improved.
  • a luminaire which has a light source with at least one LED and a heat sink for cooling the LED, wherein the light source is arranged pivotably relative to the heat sink.
  • the lamp has three acting on the light source lever arms, wherein the lamp is designed such that the light source is pressed by the three lever arms against the heat sink;
  • the lamp has a spring element, which on a first the three lever arms acts, as well as an adjusting means for adjusting a second of the three lever arms.
  • the light source By actuating the adjusting means, the light source can be pivoted particularly precisely with respect to the heat sink. For a particularly accurate or fine adjustment of the emission is facilitated.
  • the light source and the heat sink are articulated via a ball joint.
  • the adjusting means has a threaded structure, for example in the form of an adjusting screw.
  • the adjusting means on a nut which is rotatably connected to the threaded structure, wherein the nut has a spherical portion-shaped surface on which the second lever arm rests directly.
  • the light expediently has a securing element against a rotation of the nut relative to the second lever arm about a longitudinal axis of the thread structure. This allows a particularly reliable adjustment of the second lever arm using the adjusting means.
  • the securing element is arranged fixed to the nut.
  • the lamp further comprises a further adjusting means, for adjusting one or the third of the three lever arms.
  • a further adjusting means for adjusting one or the third of the three lever arms.
  • the further adjusting means is preferably designed analogously to the first-mentioned adjusting means.
  • the three lever arms advantageously have a total of a T-shape or anchor shape.
  • the lamp advantageously has a supporting element, wherein the spring element is arranged supportingly on the supporting element and the adjusting means is arranged supportingly on the supporting element.
  • the support element is annular;
  • the support element is arranged immovably opposite the heat sink or designed as part of the heat sink.
  • the heat sink has two, preferably only two, passage openings for the three lever arms. This allows a compact design and thereby a comparatively large surface of the heat sink.
  • the lamp advantageously has a motor for adjusting the adjusting means. This allows a particularly precise and thereby remotely controllable adjustment of the light emission of the lamp.
  • the luminaire is particularly suitable as a recessed ceiling luminaire.
  • Fig. 1 shows a schematic view of a lamp according to the invention
  • Fig. 2 a corresponding cross-section.
  • the luminaire comprises a light source 2.
  • the light source 2 has at least one LED, preferably a plurality of LEDs. In particular, it can be provided that the light source 2 has only one LED or a plurality of LEDs as the light source.
  • the LED can be arranged on a circuit board.
  • the light source 2 may further comprise an optical element (not expressly shown in the figures) for influencing a light generated by the LED (s).
  • the luminaire has a heat sink 4, which is designed to cool the LED, preferably the light source 2, during operation of the luminaire.
  • the heat sink 4 may have a plurality of cooling fins 41.
  • the heat sink 4 may be further configured such that it with respect to a main axis S of the heat sink 4, the light source 2 or the LED annular, preferably, as in Fig. 2 shown by way of example, cup-shaped surrounds.
  • the light source 2 is arranged pivotably relative to the heat sink 4.
  • the light source 2 and the heat sink 4 are hinged together via a ball joint.
  • the ball joint may in particular be designed so that the heat sink 4 forms a socket 42 of the ball joint and the light source 2 a condyle 21, which has the shape of a spherical portion corresponding to the articulated connection with the shape of the socket 42 corresponding.
  • the lamp has three lever arms 6, 8, 10, namely a first lever arm 6, a second lever arm 8 and a third lever arm 10.
  • the lever arms 6, 8, 10 are designed so that they act on the light source 2; In particular, they are designed so that during a movement de lever arms 6, 8, 10, the light source 2 is pivoted relative to the heat sink 4.
  • the lamp is in particular designed such that the light source 2 by the three lever arms 6, 8, 10 against the heat sink 4, so beispielswiese in the socket 42, is pressed. With reference to the representations of Figures 1 and 2 Thus, the light source 2 is pressed into the joint socket 41 "upwards" against the heat sink 4.
  • the three lever arms 6, 8, 10 are preferably designed such that they point in three different radial directions with respect to the main axis S;
  • the configuration may be such that each two adjacent of the three lever arms 6, 8, 10 an angle of between 100 ° and 140 °, preferably one Include angle of 120 °.
  • a first, the light source 2 opposite end portion 62 may be formed on the first lever arm 6, a corresponding second end portion 82 on the second lever arm 82 and a corresponding third end portion 102 on the third lever arm 10th
  • the lamp has a spring element 12, which acts on the first lever arm 6.
  • the embodiment may be such that due to the action of the spring element 12, the light source 2 is pressed against the heat sink 4.
  • the spring element 12 may be, for example-as shown in the figures-a compression spring or a leaf spring or the like.
  • the spring element 12 acts on the first end region 62.
  • the spring element 12 is designed so that the light source 2 is reliably pressed against the heat sink 4 over the duration of the entire expected life of the lamp.
  • the design is even such that the light source 2 in the course of time rubs or fits into the socket 42.
  • the lamp has an adjusting means 14 for adjusting the second lever arm 8.
  • the adjusting means 14 a (in the Figures 1 and 2 for the sake of clarity, not explicitly shown) have threaded structure 141.
  • the threaded structure 141 may in particular be formed about a longitudinal axis A , which is preferably oriented parallel to the main axis S oriented.
  • the adjustment means 14 may comprise an adjustment screw with an adjusting screw head 142 and the thread 141.
  • the adjusting screw head 142 is preferably designed such that it is at least suitable for manual adjustment, so twisting.
  • the adjusting means 14 may be configured to act on the second lever arm 8 in such a way that it or the second end region 82 is moved along the longitudinal axis A, that is to say in accordance with FIG Fig. 2 sketched double arrow P.
  • the adjusting means 14 acts in particular on the second end portion 82.
  • the spring element 12 can be in this way the Alignment of the light source 2 relative to the heat sink 4 by adjusting the adjustment means 14 change.
  • the adjusting means 14 on a nut 143 which is rotatably connected to the threaded structure 141, wherein the nut 143 has a spherical portion-shaped surface on which the second lever arm 8 rests directly.
  • the second lever arm 8 for this purpose have a ring element 81 which is adapted to rest on the spherical segment-shaped surface of the nut 143. In this way, a particularly good support of the second lever arm 8 on the nut 143 is made possible, being pressed by the spring element 12 of the condyle 21 reliably and good surface contact against the socket 42 or pressed.
  • the second lever arm 8 is pressed against the spherical segment-shaped surface of the nut 143 by the spring element 12.
  • the adjusting means 14 further comprises a securing element 144 against rotation of the nut 143 relative to the second lever arm 8 about the longitudinal axis A of the threaded structure 141;
  • the securing element 144 is expediently arranged fixed to the nut 143.
  • the lamp also has a further adjusting means 14 'for adjusting the third lever arm 10, wherein the further adjusting means 14' is preferably formed analogous to the first-mentioned adjusting means 14.
  • the three lever arms 6, 8, 10 advantageously overall T-shape or an anchor shape, in particular in a plane normal to the main axis S.
  • the lamp preferably has a support element 16, wherein the spring element 12 is arranged supportingly on the support element 16 and also the adjusting means 14 is arranged supportingly on the support element 16.
  • the adjusting means 14 can be rotatably mounted in the support element 16.
  • the support element 16 is annular.
  • it may be formed annularly around the main axis S around.
  • it may be formed immovably with respect to the heat sink 4; it may be arranged directly adjacent to the heat sink 4, for example, it may form an edge termination of the cup-shaped heat sink 4.
  • the support member 16 may also be designed to save space as part of the heat sink 4.
  • the heat sink 4 has two passage openings 43, 44 for the three lever arms 6, 8, 10.
  • this is advantageous when the heat sink 4 is cup-shaped formed around the light source 2 and the lever arms 6, 8, 10 have a total of said T-shape or anchor shape, as in the embodiment shown the case.
  • the embodiment may be such that the second lever arm 8 and the third lever arm 10 extend from the height of the light source 2 initially to a point of concave 61 together or parallel and from the branch point 61 to their respective end portions 62 and 82, respectively diverge.
  • the branch point 61 is preferably located with respect to the light source 2 outside of the heat sink 4 and thereby, for example, the end portion 62 of the first lever arm 6 diametrically opposite.
  • the two passage openings 43, 44 for a movement of the lever arms 6, 8, 10 and the light source 2 relative to the heat sink 4 is completely sufficient, so that in this way the largest possible surface of the heat sink 4 and thus a particularly effective cooling possible is.
  • the luminaire further comprises a motor (not shown in the figures), which is designed to adjust the adjusting means 14 and in this way to change the orientation of the light source 2 relative to the cooling body 4.
  • a motor (not shown in the figures), which is designed to adjust the adjusting means 14 and in this way to change the orientation of the light source 2 relative to the cooling body 4.
  • two electric motors may be provided, wherein the longitudinal axis A of the adjusting element 14 and the corresponding longitudinal axis A 'of the further adjusting element 14' forming adjusting axes of the electric motors.
  • the adjusting means 14 may be formed as an alternative to the above-mentioned adjusting screw as a linear drive or the like; the same applies, of course, for the further adjustment means 14 '.
  • the luminaire is particularly advantageously a recessed ceiling luminaire, for example an LED spot.
  • FIGS. 3a to 3c three different positions of the light source 2 relative to the heat sink 4 shown.
  • Fig. 3a the case is shown in which the adjusting element 14 and the further adjusting element 14 'are set so that the second lever arm 8 and the third lever arm 10 are each maximally removed from the support element 16; in Fig. 3b the second lever arm 8 and the third lever arm 10 are approximately equal to the support element 16; in Fig. 3c the second lever arm 8 is removed from the support element 16 and the third lever arm 10 approximates the support element 16.

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  • 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)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Die Erfindung betrifft eine Leuchte mit einer Lichtquelle, die wenigstens eine LED (Licht emittierende Diode) aufweist sowie mit einem Kühlkörper zur Kühlung der LED, bei der die Lichtquelle gegenüber dem Kühlkörper schwenkbar angeordnet ist.The invention relates to a luminaire with a light source, which has at least one LED (light-emitting diode) and with a cooling body for cooling the LED, in which the light source is arranged pivotably relative to the cooling body.

Eine solche Leuchte ist aus der DE 10 2008 007 647 A1 bekannt. Bei dieser Leuchte kann die LED durch Schwenken gegenüber dem Kühlkörper unterschiedlich ausgerichtet werden; auf diese Weise lässt sich die Richtung, in der von der Leuchte Licht hauptsächlich abgestrahlt wird, verändern. Um die Richtung der Lichtabgabe auf diese Weise zu ändern, ist eine manuelle Verstellung der LED erforderlich. Ein manuelles Verstellen kann Probleme mit sich bringen, beispielsweise wenn sehr kleine und präzise Veränderungen der Hauptabstrahlrichtung erwünscht sind oder wenn die Leuchte zum Betrieb außerhalb der üblichen manuellen Reichweite eines Benutzers angeordnet ist.Such a light is from the DE 10 2008 007 647 A1 known. In this lamp, the LED can be aligned differently by pivoting relative to the heat sink; In this way, the direction in which light is mainly radiated from the luminaire can be changed. To change the direction of the light output in this way, a manual adjustment of the LED is required. Manual adjustment can cause problems, such as when very small and precise changes in the main direction of radiation are desired or when the lamp is arranged to operate outside the usual manual range of a user.

Der Erfindung liegt die Aufgabe zugrunde, eine entsprechende Leuchte anzugeben, bei der die Möglichkeiten zur Verstellung der Hauptabstrahlrichtung verbessert sind.The invention has for its object to provide a corresponding lamp in which the possibilities for adjusting the main emission are improved.

Diese Aufgabe wird gemäß der Erfindung mit dem in dem unabhängigen Anspruch genannten Gegenstand gelöst. Besondere Ausführungsarten der Erfindung sind in den abhängigen Ansprüchen angegeben.This object is achieved according to the invention with the object mentioned in the independent claim. Particular embodiments of the invention are indicated in the dependent claims.

Gemäß der Erfindung ist eine Leuchte vorgesehen, die eine Lichtquelle mit wenigstens einer LED aufweist sowie einen Kühlkörper zur Kühlung der LED, wobei die Lichtquelle gegenüber dem Kühlkörper schwenkbar angeordnet ist. Außerdem weist die Leuchte drei auf die Lichtquelle wirkende Hebelarme auf, wobei die Leuchte derart ausgebildet ist, dass die Lichtquelle durch die drei Hebelarme gegen den Kühlkörper gedrückt wird; weiterhin weist die Leuchte ein Federelement auf, das auf einen ersten der drei Hebelarme wirkt, sowie ein Verstellmittel zum Verstellen eines zweiten der drei Hebelarme.According to the invention, a luminaire is provided which has a light source with at least one LED and a heat sink for cooling the LED, wherein the light source is arranged pivotably relative to the heat sink. In addition, the lamp has three acting on the light source lever arms, wherein the lamp is designed such that the light source is pressed by the three lever arms against the heat sink; Furthermore, the lamp has a spring element, which on a first the three lever arms acts, as well as an adjusting means for adjusting a second of the three lever arms.

Durch eine Betätigung des Verstellmittels lässt sich die Lichtquelle gegenüber dem Kühlkörper besonders präzise schwenken. Damit ist eine besonders genaue bzw. feine Einstellung der Abstrahlrichtung erleichtert.By actuating the adjusting means, the light source can be pivoted particularly precisely with respect to the heat sink. For a particularly accurate or fine adjustment of the emission is facilitated.

Vorzugsweise sind die Lichtquelle und der Kühlkörper über ein Kugelgelenk gelenkig verbunden. Hierdurch ist ermöglicht, dass sich die Hauptabstrahlrichtung der Leuchte grundsätzlich in alle möglichen Richtungen verstellen lässt. Außerdem ist hierdurch ein besonders guter Wärmeübergang von der LED auf den Kühlkörper ermöglicht.Preferably, the light source and the heat sink are articulated via a ball joint. This makes it possible that the main emission of the lamp can be adjusted in principle in all possible directions. In addition, this allows a particularly good heat transfer from the LED to the heat sink.

Vorzugsweise weist das Verstellmittel eine Gewindestruktur auf, beispielsweise in Form einer Verstellschraube. Hierdurch ist eine besonders feine Verstellung ermöglicht. Dabei weist weiterhin vorteilhaft das Verstellmittel außerdem eine Mutter auf, die mit der Gewindestruktur drehbar verbunden ist, wobei die Mutter eine kugelabschnittförmige Fläche aufweist, auf der der zweite Hebelarm unmittelbar aufliegt. Dies ermöglicht bei einem Schwenken der Lichtquelle stets eine besonders gute Auflage des zweiten Hebelarms auf dem Verstellmittel. Außerdem weist die Leuchte zweckmäßig ein Sicherungselement gegen eine Verdrehung der Mutter gegenüber dem zweiten Hebelarm um eine Längsachse der Gewindestruktur auf. Dies ermöglicht eine besonders zuverlässige Verstellung des zweiten Hebelarms mithilfe des Verstellmittels. Vorzugsweise ist dabei das Sicherungselement an der Mutter fixiert angeordnet.Preferably, the adjusting means has a threaded structure, for example in the form of an adjusting screw. As a result, a particularly fine adjustment is possible. In this case, further advantageously, the adjusting means on a nut which is rotatably connected to the threaded structure, wherein the nut has a spherical portion-shaped surface on which the second lever arm rests directly. This allows for a pivoting of the light source always a particularly good support of the second lever arm on the adjustment. In addition, the light expediently has a securing element against a rotation of the nut relative to the second lever arm about a longitudinal axis of the thread structure. This allows a particularly reliable adjustment of the second lever arm using the adjusting means. Preferably, the securing element is arranged fixed to the nut.

Vorzugsweise weist die Leuchte weiterhin ein weiteres Verstellmittel auf, und zwar zum Verstellen eines bzw. des dritten der drei Hebelarme. Hierdurch ist ermöglicht, dass durch das zuerst genannte Verstellmittel und das weitere Verstellmittel die LED in alle Richtungen verstellt werden kann. Dabei ist das weitere Verstellmittel vorzugsweise analog zu dem zuerst genannten Verstellmittel ausgebildet.Preferably, the lamp further comprises a further adjusting means, for adjusting one or the third of the three lever arms. This makes it possible that the LED can be adjusted in all directions by the first-mentioned adjustment and the further adjustment. In this case, the further adjusting means is preferably designed analogously to the first-mentioned adjusting means.

Die drei Hebelarme weisen vorteilhaft insgesamt eine T-Form oder Ankerform auf.The three lever arms advantageously have a total of a T-shape or anchor shape.

Weiterhin weist die Leuchte vorteilhaft ein Abstützelement auf, wobei das Federelement sich an dem Abstützelement abstützend angeordnet ist und das Verstellmittel sich an dem Abstützelement abstützend angeordnet ist. Dies ermöglicht eine insgesamt kompakte Bauform der Leuchte. Vorzugsweise ist das Abstützelement ringförmig; vorteilhaft ist das Abstützelement unbeweglich gegenüber dem Kühlkörper angeordnet oder als Teil des Kühlkörpers ausgestaltet.Furthermore, the lamp advantageously has a supporting element, wherein the spring element is arranged supportingly on the supporting element and the adjusting means is arranged supportingly on the supporting element. This allows a total compact design of the lamp. Preferably, the support element is annular; Advantageously, the support element is arranged immovably opposite the heat sink or designed as part of the heat sink.

Der Kühlkörper weist zwei, vorzugsweise lediglich zwei, Durchgangsöffnungen für die drei Hebelarme auf. Hierdurch ist eine kompakte Bauform ermöglicht und dabei eine vergleichsweise große Oberfläche des Kühlkörpers.The heat sink has two, preferably only two, passage openings for the three lever arms. This allows a compact design and thereby a comparatively large surface of the heat sink.

Weiterhin weist die Leuchte vorteilhaft einen Motor zum Verstellen des Verstellmittels auf. Dies ermöglicht eine besonders präzise und dabei fernsteuerbare Einstellung der Lichtabstrahlrichtung der Leuchte.Furthermore, the lamp advantageously has a motor for adjusting the adjusting means. This allows a particularly precise and thereby remotely controllable adjustment of the light emission of the lamp.

Besonders eignet sich die Leuchte als Deckeneinbauleuchte.The luminaire is particularly suitable as a recessed ceiling luminaire.

Die Erfindung wird im Folgenden anhand eines Ausführungsbeispiels und mit Bezug auf die Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine schematische perspektivische Skizze einer erfindungsgemäßen Leuchte,
Fig. 2
eine perspektivische Skizze eines Querschnitts und
Figuren 3a bis 3c
drei Ansichten der Leuchte in unterschiedlichen Stellungen der Lichtquelle gegenüber dem Kühlkörper.
The invention is explained in more detail below with reference to an embodiment and with reference to the drawings. Show it:
Fig. 1
a schematic perspective sketch of a lamp according to the invention,
Fig. 2
a perspective sketch of a cross section and
FIGS. 3a to 3c
three views of the lamp in different positions of the light source relative to the heat sink.

Fig. 1 zeigt eine schematische Ansicht einer erfindungsgemäßen Leuchte, Fig. 2 einen entsprechenden Querschnitt. Die Leuchte umfasst eine Lichtquelle 2. Die Lichtquelle 2 weist zumindest eine LED, vorzugsweise mehrere LEDs auf. Insbesondere kann vorgesehen sein, dass die Lichtquelle 2 als Leuchtmittel lediglich eine LED oder mehrere LEDs aufweist. Die LED kann auf einer Platine angeordnet sein. Fig. 1 shows a schematic view of a lamp according to the invention, Fig. 2 a corresponding cross-section. The luminaire comprises a light source 2. The light source 2 has at least one LED, preferably a plurality of LEDs. In particular, it can be provided that the light source 2 has only one LED or a plurality of LEDs as the light source. The LED can be arranged on a circuit board.

Die Lichtquelle 2 kann außerdem ein (in den Figuren nicht ausdrücklich gezeigtes) optisches Element zur Beeinflussung eines von der LED bzw. von den LEDs erzeugten Lichts umfassen.The light source 2 may further comprise an optical element (not expressly shown in the figures) for influencing a light generated by the LED (s).

Weiterhin weist die Leuchte einen Kühlkörper 4 auf, der dazu ausgebildet ist, bei Betrieb der Leuchte die LED, vorzugsweise die Lichtquelle 2, zu kühlen. Der Kühlkörper 4 kann mehrere Kühlrippen 41 aufweisen. Der Kühlkörper 4 kann weiterhin so ausgestaltet sein, dass er mit Bezug auf eine Hauptachse S des Kühlkörpers 4 die Lichtquelle 2 oder die LED ringförmig, vorzugsweise, wie in Fig. 2 beispielhaft gezeigt, topfförmig umschließt.Furthermore, the luminaire has a heat sink 4, which is designed to cool the LED, preferably the light source 2, during operation of the luminaire. The heat sink 4 may have a plurality of cooling fins 41. The heat sink 4 may be further configured such that it with respect to a main axis S of the heat sink 4, the light source 2 or the LED annular, preferably, as in Fig. 2 shown by way of example, cup-shaped surrounds.

Die Lichtquelle 2 ist gegenüber dem Kühlkörper 4 schwenkbar angeordnet. Vorzugsweise sind die Lichtquelle 2 und der Kühlkörper 4 über ein Kugelgelenk gelenkig miteinander verbunden. Hierdurch ist ermöglicht, dass die Lichtquelle 2 relativ zu dem Kühlkörper 4 in alle Richtungen geschwenkt werden kann. Das Kugelgelenk kann insbesondere so gestaltet sein, dass der Kühlkörper 4 eine Gelenkpfanne 42 des Kugelgelenks bildet und die Lichtquelle 2 einen Gelenkkopf 21, der die Form eines Kugelabschnitts aufweist, die entsprechend der gelenkigen Verbindung mit der Form der Gelenkpfanne 42 korrespondiert.The light source 2 is arranged pivotably relative to the heat sink 4. Preferably, the light source 2 and the heat sink 4 are hinged together via a ball joint. This makes it possible that the light source 2 can be pivoted relative to the heat sink 4 in all directions. The ball joint may in particular be designed so that the heat sink 4 forms a socket 42 of the ball joint and the light source 2 a condyle 21, which has the shape of a spherical portion corresponding to the articulated connection with the shape of the socket 42 corresponding.

Die Leuchte weist drei Hebelarme 6, 8, 10 auf, und zwar einen ersten Hebelarm 6, einen zweiten Hebelarm 8 und einen drittem Hebelarm 10. Die Hebelarme 6, 8, 10 sind so gestaltet, dass sie auf die Lichtquelle 2 wirken; insbesondere sind sie so gestaltet, dass bei einer Bewegung de Hebelarme 6, 8, 10 die Lichtquelle 2 gegenüber dem Kühlkörper 4 geschwenkt wird. Dabei ist die Leuchte insbesondere derart ausgebildet, dass die Lichtquelle 2 durch die drei Hebelarme 6, 8, 10 gegen den Kühlkörper 4, also beispielswiese in die Gelenkpfanne 42, gedrückt wird. Mit Bezug auf die Darstellungen der Figuren 1 und 2 wird die Lichtquelle 2 also nach "oben" gegen den Kühlkörper 4, in die Gelenkpfanne 41 hinein gedrückt.The lamp has three lever arms 6, 8, 10, namely a first lever arm 6, a second lever arm 8 and a third lever arm 10. The lever arms 6, 8, 10 are designed so that they act on the light source 2; In particular, they are designed so that during a movement de lever arms 6, 8, 10, the light source 2 is pivoted relative to the heat sink 4. In this case, the lamp is in particular designed such that the light source 2 by the three lever arms 6, 8, 10 against the heat sink 4, so beispielswiese in the socket 42, is pressed. With reference to the representations of Figures 1 and 2 Thus, the light source 2 is pressed into the joint socket 41 "upwards" against the heat sink 4.

Die drei Hebelarme 6, 8, 10 sind vorzugsweise derart ausgebildet, dass sie mit Bezug auf die Hauptachse S in drei unterschiedliche radiale Richtungen weisen; beispielsweise kann die Ausgestaltung so sein, dass jeweils zwei benachbarte der drei Hebelarme 6, 8, 10 einen Winkel von zwischen 100° und 140°, vorzugsweise einen Winkel von 120° einschließen. Ein erster, der Lichtquelle 2 gegenüberliegender Endbereich 62 kann an dem ersten Hebelarm 6 ausgebildet sein, ein entsprechender zweiter Endbereich 82 an dem zweiten Hebelarm 82 und ein entsprechender dritter Endbereich 102 an dem dritten Hebelarm 10.The three lever arms 6, 8, 10 are preferably designed such that they point in three different radial directions with respect to the main axis S; For example, the configuration may be such that each two adjacent of the three lever arms 6, 8, 10 an angle of between 100 ° and 140 °, preferably one Include angle of 120 °. A first, the light source 2 opposite end portion 62 may be formed on the first lever arm 6, a corresponding second end portion 82 on the second lever arm 82 and a corresponding third end portion 102 on the third lever arm 10th

Weiterhin weist die Leuchte ein Federelement 12 auf, das auf den ersten Hebelarm 6 wirkt. Insbesondere kann die Ausgestaltung derart sein, dass aufgrund der Wirkung des Federelements 12 die Lichtquelle 2 gegen den Kühlkörper 4 gedrückt wird. Bei dem Federelement 12 kann es sich beispielsweise - wie in den Figuren gezeigt - um eine Druckfeder handeln oder um eine Blattfeder oder dergleichen. Vorteilhaft wirkt das Federelement 12 auf den ersten Endbereich 62.Furthermore, the lamp has a spring element 12, which acts on the first lever arm 6. In particular, the embodiment may be such that due to the action of the spring element 12, the light source 2 is pressed against the heat sink 4. The spring element 12 may be, for example-as shown in the figures-a compression spring or a leaf spring or the like. Advantageously, the spring element 12 acts on the first end region 62.

Vorzugsweise ist das Federelement 12 so ausgelegt, dass die Lichtquelle 2 auf die Dauer der gesamten zu erwartenden Lebensdauer der Leuchte zuverlässig gegen den Kühlkörper 4 gedrückt wird. Vorzugsweise ist die Auslegung sogar so, dass die Lichtquelle 2 sich im Laufe der Zeit in die Gelenkpfanne 42 einreibt bzw. einpasst.Preferably, the spring element 12 is designed so that the light source 2 is reliably pressed against the heat sink 4 over the duration of the entire expected life of the lamp. Preferably, the design is even such that the light source 2 in the course of time rubs or fits into the socket 42.

Weiterhin weist die Leuchte ein Verstellmittel 14 zum Verstellen des zweiten Hebelarms 8 auf. Insbesondere kann das Verstellmittel 14 eine (in den Figuren 1 und 2 der Übersichtlichkeit halber nicht ausdrücklich dargestellte) Gewindestruktur 141 aufweisen. Die Gewindestruktur 141 kann insbesondere um eine Längsachse A ausgebildet sein, die vorzugsweise parallel zur Hauptachse S orientiert ausgebildet ist.Furthermore, the lamp has an adjusting means 14 for adjusting the second lever arm 8. In particular, the adjusting means 14 a (in the Figures 1 and 2 for the sake of clarity, not explicitly shown) have threaded structure 141. The threaded structure 141 may in particular be formed about a longitudinal axis A , which is preferably oriented parallel to the main axis S oriented.

Beispielswiese kann das Verstellmittel 14 eine Verstellschraube mit einem Verstellschraubenkopf 142 und dem Gewinde 141 aufweisen. Der Verstellschraubenkopf 142 ist dabei vorzugsweise derart ausgebildet, dass er sich zumindest auch zum manuellen Verstellen, also Verdrehen eignet.For example, the adjustment means 14 may comprise an adjustment screw with an adjusting screw head 142 and the thread 141. The adjusting screw head 142 is preferably designed such that it is at least suitable for manual adjustment, so twisting.

Insbesondere kann also das Verstellmittel 14 dazu ausgebildet sein, derart auf den zweiten Hebelarm 8 zu wirken, dass dieser bzw. der zweite Endbereich 82 entlang der Längsachse A bewegt wird, also entsprechend dem in Fig. 2 skizzierten Doppelpfeil P. Vorzugsweise wirkt also das Verstellmittel 14 insbesondere auf den zweiten Endbereich 82. In Verbindung dem Federelement 12 lässt sich auf diese Weise die Ausrichtung der Lichtquelle 2 gegenüber dem Kühlkörper 4 durch Verstellen des Verstellmittels 14 verändern.In particular, therefore, the adjusting means 14 may be configured to act on the second lever arm 8 in such a way that it or the second end region 82 is moved along the longitudinal axis A, that is to say in accordance with FIG Fig. 2 sketched double arrow P. Preferably, therefore, the adjusting means 14 acts in particular on the second end portion 82. In conjunction with the spring element 12 can be in this way the Alignment of the light source 2 relative to the heat sink 4 by adjusting the adjustment means 14 change.

Weiterhin vorzugsweise weist das Verstellmittel 14 eine Mutter 143 auf, die mit der Gewindestruktur 141 drehbar verbunden ist, wobei die Mutter 143 eine kugelabschnittförmige Fläche aufweist, auf der der zweite Hebelarm 8 unmittelbar aufliegt. Insbesondere kann der zweite Hebelarm 8 hierfür ein Ringelement 81 aufweisen, das dazu ausgebildet ist, auf der kugelabschnittförmigen Fläche der Mutter 143 aufzuliegen. Hierdurch ist eine besonders gute Auflage des zweiten Hebelarms 8 auf der Mutter 143 ermöglicht, wobei durch das Federelement 12 der Gelenkkopf 21 zuverlässig und gut flächig kontaktierend gegen die Gelenkpfanne 42 gedrückt bzw. gepresst wird. Außerdem wird durch das Federelement 12 der zweite Hebelarm 8 gegen die kugelabschnittförmige Fläche der Mutter 143 gedrückt.Further preferably, the adjusting means 14 on a nut 143 which is rotatably connected to the threaded structure 141, wherein the nut 143 has a spherical portion-shaped surface on which the second lever arm 8 rests directly. In particular, the second lever arm 8 for this purpose have a ring element 81 which is adapted to rest on the spherical segment-shaped surface of the nut 143. In this way, a particularly good support of the second lever arm 8 on the nut 143 is made possible, being pressed by the spring element 12 of the condyle 21 reliably and good surface contact against the socket 42 or pressed. In addition, the second lever arm 8 is pressed against the spherical segment-shaped surface of the nut 143 by the spring element 12.

Vorzugsweise weist das Verstellmittel 14 weiterhin ein Sicherungselement 144 gegen eine Verdrehung der Mutter 143 gegenüber dem zweiten Hebelarm 8 um die Längsachse A der Gewindestruktur 141 auf; dabei ist das Sicherungselement 144 zweckmäßig an der Mutter 143 fixiert angeordnet. Durch das Sicherungselement 144 lässt sich vermeiden, dass bei einem Verdrehen des Verstellmittels 14 zur Veränderung der Ausrichtung der Lichtquelle 2 die Mutter 143 zusammen mit der Gewindestruktur 141 dreht und auf diese Weise der erste Hebelarm 6 undefiniert oder gar überhaupt nicht bewegt wird.Preferably, the adjusting means 14 further comprises a securing element 144 against rotation of the nut 143 relative to the second lever arm 8 about the longitudinal axis A of the threaded structure 141; In this case, the securing element 144 is expediently arranged fixed to the nut 143. By the securing element 144 can be avoided that upon rotation of the adjusting means 14 to change the orientation of the light source 2, the nut 143 rotates together with the threaded structure 141 and in this way the first lever arm 6 undefined or not at all moved.

Vorzugsweise weist die Leuchte außerdem ein weiteres Verstellmittel 14' zum Verstellen des dritten Hebelarms 10 auf, wobei das weitere Verstellmittel 14' vorzugsweise analog zu dem zuerst genannten Verstellmittel 14 ausgebildet ist.Preferably, the lamp also has a further adjusting means 14 'for adjusting the third lever arm 10, wherein the further adjusting means 14' is preferably formed analogous to the first-mentioned adjusting means 14.

Alternativ könnte ein weiteres Federelement vorgesehen sein, das so auf den dritten Hebelarm 10 wirkt, wie das zuerst genannte Federelement 12 auf den ersten Hebelarm 6. Allerdings sind bei dieser Alternative die Verstellmöglichkeiten reduziert.Alternatively, another spring element could be provided, which acts on the third lever arm 10, as the first-mentioned spring element 12 on the first lever arm 6. However, in this alternative, the adjustment options are reduced.

Wie beim gezeigten Ausführungsbeispiel der Fall, weisen die drei Hebelarme 6, 8, 10 vorteilhaft insgesamt eine T-Form bzw. eine Ankerform auf, insbesondere in einer Ebene normal zur Hauptachse S.As in the embodiment shown, the case, the three lever arms 6, 8, 10 advantageously overall T-shape or an anchor shape, in particular in a plane normal to the main axis S.

Weiterhin weist die Leuchte vorzugsweise ein Abstützelement 16 auf, wobei das Federelement 12 sich abstützend an dem Abstützelement 16 angeordnet ist und auch das Verstellmittel 14 sich an dem Abstützelement 16 abstützend angeordnet ist. Dabei kann das Verstellmittel 14 drehbar in dem Abstützelement 16 gelagert sein.Furthermore, the lamp preferably has a support element 16, wherein the spring element 12 is arranged supportingly on the support element 16 and also the adjusting means 14 is arranged supportingly on the support element 16. In this case, the adjusting means 14 can be rotatably mounted in the support element 16.

Vorzugsweise ist das Abstützelement 16 ringförmig ausgebildet. Beispielsweise kann es ringförmig um die Hauptachse S herum ausgebildet sein. Insbesondere kann es unbeweglich gegenüber dem Kühlkörper 4 ausgebildet sein; es kann unmittelbar an den Kühlkörper 4 angrenzend angeordnet sein, beispielsweise kann es einen Randabschluss des topfförmig ausgebildeten Kühlkörpers 4 bilden. Das Abstützelement 16 kann aber auch raumsparend als Teil des Kühlkörpers 4 ausgebildet sein.Preferably, the support element 16 is annular. For example, it may be formed annularly around the main axis S around. In particular, it may be formed immovably with respect to the heat sink 4; it may be arranged directly adjacent to the heat sink 4, for example, it may form an edge termination of the cup-shaped heat sink 4. The support member 16 may also be designed to save space as part of the heat sink 4.

Selbstverständlich kann auch das weitere Verstellmittel 14' sich abstützend an dem Abstützelement 16 angeordnet sein, insbesondere analog zu der Ausgestaltung mit Bezug auf das zuerst genannte Verstellmittel 14.Of course, the further adjustment means 14 'may be arranged supportingly on the support element 16, in particular analogous to the embodiment with respect to the first-mentioned adjustment means 14th

Vorzugsweise weist der Kühlkörper 4 zwei Durchgangsöffnungen 43, 44 für die drei Hebelarme 6, 8, 10 auf. Insbesondere ist dies vorteilhaft, wenn der Kühlkörper 4 topfförmig um die Lichtquelle 2 ausgebildet ist und die Hebelarme 6, 8, 10 insgesamt die genannte T-Form oder Ankerform aufweisen, wie im gezeigten Ausführungsbeispiel der Fall. Insbesondere kann die Ausgestaltung derart sein, dass sich der zweite Hebelarm 8 und der dritte Hebelarm 10 von der Höhe der Lichtquelle 2 aus zunächst bis zu einem Verzeigungspunkt 61 gemeinsam bzw. parallel erstrecken und ab dem Verzweigungspunkt 61 zu ihren jeweiligen Endbereichen 62 bzw. 82 hin divergieren. Der Verzweigungspunkt 61 liegt dabei vorzugsweise mit Bezug auf die Lichtquelle 2 außerhalb des Kühlkörpers 4 und dabei beispielsweise dem Endbereich 62 des ersten Hebelarms 6 diametral gegenüber. Somit sind die zwei Durchgangsöffnungen 43, 44 für eine Bewegung der Hebelarme 6, 8, 10 bzw. der Lichtquelle 2 relativ zu dem Kühlkörper 4 völlig ausreichend, so dass auf diese Weise eine möglichst große Oberfläche des Kühlkörpers 4 und damit eine besonders effektive Kühlung ermöglicht ist.Preferably, the heat sink 4 has two passage openings 43, 44 for the three lever arms 6, 8, 10. In particular, this is advantageous when the heat sink 4 is cup-shaped formed around the light source 2 and the lever arms 6, 8, 10 have a total of said T-shape or anchor shape, as in the embodiment shown the case. In particular, the embodiment may be such that the second lever arm 8 and the third lever arm 10 extend from the height of the light source 2 initially to a point of concave 61 together or parallel and from the branch point 61 to their respective end portions 62 and 82, respectively diverge. The branch point 61 is preferably located with respect to the light source 2 outside of the heat sink 4 and thereby, for example, the end portion 62 of the first lever arm 6 diametrically opposite. Thus, the two passage openings 43, 44 for a movement of the lever arms 6, 8, 10 and the light source 2 relative to the heat sink 4 is completely sufficient, so that in this way the largest possible surface of the heat sink 4 and thus a particularly effective cooling possible is.

Vorzugsweise weist die Leuchte weiterhin einen (in den Figuren nicht gezeigten) Motor auf, der dazu ausgebildet ist, das Verstellmittel 14 zu verstellen und auf diese Weise die Ausrichtung der Lichtquelle 2 gegenüber dem Kühlkörper 4 zu verändern. Hierdurch ist eine Basis für eine intelligente Lichtanwendung gebildet. Insbesondere können zwei Elektromotoren vorgesehen sein, wobei die Längsachse A des Verstellelements 14 und die entsprechende Längsachse A' des weiteren Verstellelements 14' Stellachsen der Elektromotoren bilden. Das Verstellmittel 14 kann in Alternative zu der oben genannten Verstellschraube auch als Linearantrieb oder dergleichen ausgebildet sein; entsprechendes gilt natürlich auch für das weitere Verstellmittel 14'.Preferably, the luminaire further comprises a motor (not shown in the figures), which is designed to adjust the adjusting means 14 and in this way to change the orientation of the light source 2 relative to the cooling body 4. This forms a basis for an intelligent lighting application. In particular, two electric motors may be provided, wherein the longitudinal axis A of the adjusting element 14 and the corresponding longitudinal axis A 'of the further adjusting element 14' forming adjusting axes of the electric motors. The adjusting means 14 may be formed as an alternative to the above-mentioned adjusting screw as a linear drive or the like; the same applies, of course, for the further adjustment means 14 '.

Besonders vorteilhaft handelt es sich bei der Leuchte um eine Deckeneinbauleuchte, beispielsweise einen LED-Spot.The luminaire is particularly advantageously a recessed ceiling luminaire, for example an LED spot.

Zur ergänzenden Illustration sind in den Figuren 3a bis 3c drei unterschiedliche Stellungen der Lichtquelle 2 gegenüber dem Kühlkörper 4 gezeigt. In Fig. 3a ist der Fall gezeigt, in dem das Verstellelement 14 und das weitere Verstellelement 14' so eingestellt sind, dass der zweite Hebelarm 8 und der dritte Hebelarm 10 jeweils maximal von dem Abstützelement 16 entfernt sind; in Fig. 3b sind der zweite Hebelarm 8 und der dritte Hebelarm 10 dem Abstützelement 16 maximal angenähert; in Fig. 3c ist der zweite Hebelarm 8 von dem Abstützelement 16 entfernt und der dritte Hebelarm 10 dem Abstützelement 16 angenähert.For additional illustration are in the FIGS. 3a to 3c three different positions of the light source 2 relative to the heat sink 4 shown. In Fig. 3a the case is shown in which the adjusting element 14 and the further adjusting element 14 'are set so that the second lever arm 8 and the third lever arm 10 are each maximally removed from the support element 16; in Fig. 3b the second lever arm 8 and the third lever arm 10 are approximately equal to the support element 16; in Fig. 3c the second lever arm 8 is removed from the support element 16 and the third lever arm 10 approximates the support element 16.

Claims (12)

  1. A luminaire, having
    - a light source (2) with at least one LED, and
    - a heat sink (4) for cooling the LED,
    wherein the light source (2) is pivotably arranged with respect to the heat sink (4).
    characterised by
    - three lever arms (6, 8, 10) that act on the light
    source (2),
    wherein the luminaire is formed in such a way that the light source (2) is pressed by means of the three lever arms (6, 8, 10) against the heat sink (4);
    - a spring element (12), which acts on a first lever arm (6) of the three lever arms (6, 8, 10), and
    - an adjusting means (14) to adjust a second lever arm (8) of the three lever arms (6, 8, 10).
  2. A luminaire according to claim 1,
    in which the light source (2) and the heat sink (4) are connected in an articulated manner by way of a ball joint.
  3. A luminaire according to claim 1 or 2,
    in which the adjusting means (14) has a threaded structure (141), for example in the form of an adjusting screw.
  4. A luminaire according to claim 3,
    in which the adjusting means (14) has, furthermore, a nut (143) which is rotatably connected to the threaded structure (141), wherein the nut (143) has an area which is in the form of a spherical segment and on which the second lever arm (8) rests directly.
  5. A luminaire according to claim 4,
    in which the adjusting means (14) has, furthermore, a securing element (144) to prevent a rotation of the nut (143) with respect to the second lever arm (8) about a longitudinal axis (A) of the threaded structure (141), wherein the securing element (144) is preferably fixedly arranged on the nut (143).
  6. A luminaire according to one of the preceding claims, having, furthermore,
    - a further adjusting means (14') to adjust a third lever arm (10) of the three lever arms (6, 8, 10), wherein the further adjusting means (14') is preferably formed in a similar manner to that of the adjusting means (14) first mentioned.
  7. A luminaire according to one of the preceding claims, in which the three lever arms (6, 8, 10) altogether have a T-shape or anchor shape.
  8. A luminaire according to one of the preceding claims, having, furthermore,
    - a supporting element (16), which is preferably annular, wherein the spring element (12) is arranged so as to be supported on the supporting element (16), and the adjusting means (14) is arranged so as to be supported on the supporting element (16).
  9. A luminaire according to claim 8,
    in which the supporting element (16) is arranged so that it is immovable with respect to the heat sink (4) or is formed as part of the heat sink (4).
  10. A luminaire according to one of the preceding claims, in which the heat sink (4) has two, preferably just two, through-openings (43, 44) for the three lever arms (6, 8, 10).
  11. A luminaire according to one of the preceding claims, having, furthermore,
    - a motor to adjust the adjusting means (14).
  12. A luminaire according to one of the preceding claims in the form of a built-in ceiling luminaire.
EP11713487.4A 2010-04-09 2011-04-06 Luminaire having a pivotable led Not-in-force EP2556298B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202010004776U DE202010004776U1 (en) 2010-04-09 2010-04-09 Luminaire with swiveling LED
PCT/EP2011/055333 WO2011124600A1 (en) 2010-04-09 2011-04-06 Luminaire having a pivotable led

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EP2556298A1 EP2556298A1 (en) 2013-02-13
EP2556298B1 true EP2556298B1 (en) 2015-01-28

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EP (1) EP2556298B1 (en)
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US20130010458A1 (en) 2013-01-10
EP2556298A1 (en) 2013-02-13
US8690399B2 (en) 2014-04-08
DE202010004776U1 (en) 2011-09-02
WO2011124600A1 (en) 2011-10-13

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