EP3623698B1 - Luminaire - Google Patents

Description

The invention relates to a lamp with a lamp head and a lamp arm rotatably connected to the lamp head.

Luminaires of the type mentioned are known in principle from the prior art. Such a lamp is usually an LED spotlight, which can be mounted on the lamp arm at a certain point, for example on a ceiling or wall. The lamp arm is rotatably connected to the lamp head, so that the lamp head can be rotated around two axes of rotation, that is to say around a pivot and a tilt axis, and can be aligned in a corresponding position and / or orientation. Such lights are used, for example, as museum spotlights. It is known to lock the axes of rotation to hold the respective position and / or orientation of the lamp head, i.e. to block the rotational mobility of the axes of rotation and thus the corresponding position and / or orientation of the lamp head by each of the axes of rotation having a corresponding locking element via which a User can lock the respective axis is assigned. document U.S. 6,079,992 discloses the subject matter of the preamble of claim 1. A disadvantage of the lights known from the prior art is that the locking of all axes of rotation requires several locking elements and thus also several locking steps. The locking or fixing of all axes of rotation is therefore relatively expensive. In addition, the locking elements result in a relatively large luminaire, which is difficult to integrate into a luminaire design in particular.

The invention is thus based on the object of creating a lamp of the type mentioned in which the axes of rotation are easier, i.e. H. in particular can be locked faster and more reliably.

The object is achieved according to the invention for the lamp by the features of the independent claim. Advantageous further developments are the subject of the dependent claims which refer back to them.

A lamp according to the invention, in particular an LED spotlight, has: a lamp head (for emitting light), a lamp arm, and a swivel joint for rotatable connection of the lamp head with the lamp arm, so that the lamp head can be aligned with respect to the lamp arm via a first and a second axis of rotation of the swivel joint. The lamp also has a locking element which is set up to be moved between a release position in which the lamp head can be aligned via the (i.e. both) axes of rotation, and a locking position in which the (i.e. both) axes of rotation are locked.

In other words: by actuating a single locking element or in just one locking step, the (that is, both) axes of rotation can be locked at the same time or released at the same time to align the lamp head. A fitter therefore only has to operate one locking element or perform a locking movement (turning, pulling, pressing etc. of the locking element) in order to lock or hold the lamp head in a defined position and / or orientation. The number of locking elements and locking steps is thus reduced, making the axes of rotation of the lamp easier, i.e. H. in particular can be locked faster and more reliably. Because of the only one locking element, the manufacturing effort is also reduced, so that the lamp is in particular easier to assemble and more cost-effective to manufacture.

According to the invention, the lamp also has: a first locking element, which can be moved between a first release position in which the lamp can be aligned via the first axis of rotation, and a first locking position in which the first axis of rotation is locked (blocked), and a second Locking element which can be moved between a second release position, in which the lamp can be aligned via the second axis of rotation, and a second locking position, in which the second axis of rotation is locked. The locking element interacts with at least (or only) one of the locking elements in such a way as to move both locking elements simultaneously between their release position and their locking position.

The first locking element is preferably arranged with respect to the second locking element in such a way that by moving the first locking element from the first release position into the first locking position, the second locking element simultaneously moves the second locking element from the second release position to the second locking position is moved. Consequently, the first locking element simultaneously serves as a connecting element for transmitting a movement of the locking element to the second locking element. A particularly compact arrangement of the locking elements can thus be achieved.

The first locking element can be arranged with respect to the second locking element in such a way that by moving the first locking element from the first release position into the first locking position, the first locking element comes into non-positive and / or form-fitting contact with the second locking element in order to move the second locking element away from the second To move the release position into the second locking position. Thus, the second locking element can be moved reliably into the locking position by means of the first locking element, in particular only by the force of the first locking element for locking the first axis of rotation. By reducing this force, the locking elements can also simply be moved back into the respective release position. In the first locking position, the first locking element is in non-positive and / or positive contact with the swivel joint in order to lock the first axis of rotation. Since the swivel joint or the structure of the swivel joint rotates with the first axis of rotation, the first axis of rotation can thus be locked particularly easily by means of the first locking element.

The first locking element is a tensioning element which can be moved from the first release position into the first locking position by tensioning (tightening) the tensioning element by means of the locking element. Thus, the first locking element can easily be moved into the first locking position, namely in particular only by a single, in particular linear tensioning movement by the locking element. In a corresponding manner, the first locking element or the clamping element can be moved into the first release position by releasing the tensioning element. And since the tensioning element is only subjected to tensile stress, the tensioning element can thus be produced simply and with little material, for example as a tensioning strap.

In the second locking position, the second locking element is preferably in non-positive and / or form-fitting contact with a third locking element, which is non-rotatably provided with respect to the second axis of rotation, around the second To lock rotation axis. The second axis of rotation can thus be locked particularly easily due to the additional friction between the swivel joint and the third locking element. The third locking element is preferably provided non-rotatably with respect to the lamp arm, for example by means of a force fit and / or form fit. Consequently, the third locking element rotates with the lamp arm about the second axis of rotation. In this way, the third locking element can simply be provided non-rotatably with respect to the second axis of rotation.

In the second locking position, the third locking element can be clamped between the swivel joint and the second locking element in order to lock the second axis of rotation. Thus, the locking effect of the second locking element on the third locking element and thus the second axis of rotation can be increased so that the second axis of rotation can be locked particularly easily.

The third locking element can be a disk. Because of the particularly thin-walled design of the disk, this benefits efficient production of the third locking element. In addition, a particularly compact arrangement of the second and third locking elements can thus be achieved.

The second locking element can be movably received by the swivel joint, in particular movably in a translatory manner, in order to be moved between the second release position and the second locking position. Thus, the second locking element can be moved easily, reliably and in a compact manner between the second release position and the second locking position.

The second locking element can be designed as a shoe, that is, corresponding to a brake shoe. Due to the massive design of the jaw, the second axis of rotation can thus be locked particularly well in the second locking position. In addition, the stability of a second locking element configured in this way is improved.

The locking element is preferably only functionally connected to the first locking element. In other words, the locking element is preferred only connected directly to the first locking element, the locking element being indirectly connected to the second locking element, namely via the first locking element. The locking elements can thus be arranged in a particularly compact manner.

The locking element can be operated by means of a tool and / or without tools. Thus, the force for locking the axes of rotation can be brought about by means of the locking element in a particularly simple manner. In the case of the tool-free configuration of the locking element, the locking element can, for example, have an operating area formed integrally with the locking element, so that the operability of the locking element is improved because of the unnecessary tool.

In a particularly preferred embodiment, the locking element is a screw (e.g. adjusting screw), so that the locking element can be moved between the release position and the locking position by a screwing movement of the screw, i.e. preferably the first locking element can be moved between the first release position and the first locking position. By means of the screw, an operating movement of the locking element (rotation) can be translated into the movement for releasing or locking the axes of rotation, i.e. preferably into a movement of the first locking element (e.g. translational movement) between the first release position and the first locking position.

The swivel joint can have an opening, in particular a passage opening, in which the lamp arm is rotatably mounted in order to be rotatable about the second axis of rotation. The lamp arm can thus be particularly easily mounted in the swivel joint so that it can rotate around the second axis of rotation.

The lamp preferably has a securing element, for example a securing ring, for axially securing the lamp arm with respect to the second axis of rotation. The third locking element is preferably provided between the securing element and the swivel joint in order to be axially secured with respect to the second axis of rotation. This is of particular benefit to a compact arrangement of the third locking element with respect to the securing element and the swivel joint.

To provide the first axis of rotation, the swivel joint can be rotatably mounted in a bearing area of the lamp, preferably rotatably with an inhibition. The inhibition in particular has the effect that the lamp head can maintain a defined alignment (position / orientation) even in the unlocked state or in the first release position, but can still easily be aligned around the first axis of rotation.

The first axis of rotation and the second axis of rotation are preferably not aligned parallel to one another. The first axis of rotation is preferably oriented perpendicular to the second axis of rotation. It is particularly preferred if the first axis of rotation is perpendicular to the second axis of rotation. The axes of rotation can thus be arranged particularly compactly with respect to one another.

The lamp arm and / or the swivel joint can (each) have a structure, for example a stop, for limiting the rotational mobility of the second axis of rotation. The rotational mobility is preferably limited at an angle of rotation of 360 ° +/- 5 °. In particular, the structure on the side of the swivel joint can be provided movably with respect to the swivel joint in such a way that when the structure on the side of the lamp arm interacts (i.e. mechanical contact) with the structure on the side of the swivel joint, the lamp arm in a defined angle of rotation range, in particular in a rotation angle range of 0 ° to 10 °, around the second axis of rotation is still rotatable. Thus, for example, a fitter who aligns the lamp head about the second axis of rotation can perceive a haptic feedback shortly before the rotational mobility of the second axis of rotation is limited by the mechanical interaction of the structures. The operability of aligning the lamp head is thus optimized.

The structure can be provided (formed) integrally or separately, for example by means of a ring that is positively connected to the lamp arm, with the lamp arm or the swivel joint.

The lamp head can have a lamp housing in which at least the swivel joint and preferably the first, second and particularly preferably the third locking element are provided. Thus, the luminaire housing can do that Protect the swivel joint and preferably the locking elements from environmental influences. A lighting means, for example LEDs, and / or other electrical and / or electronic components for operating the lamp is preferably also provided in the lamp housing.

For a particularly simple locking of the axis of rotation, the locking element can be operated from outside the lamp, in particular from outside the lamp housing, preferably from a rear side (i.e. a side facing away from the light emitting side (front side) of the lamp head).

Figur 1

ein Ausführungsbeispiel der erfindungsgemäßen Leuchte in einer perspektivischen Ansicht von schräg oben und hinten;

Figur 2

die perspektivische Ansicht der in Figur 1 gezeigten Leuchte, wobei Teile des Leuchtenkopfs weggelassen wurden, um insbesondere das Drehgelenk, die Arretierelemente und das Feststellelement sichtbar zu machen;

Figur 3

insbesondere der Leuchtenarm, das Drehgelenk, die Arretierelemente und das Feststellelement der in den Figuren 1 und 2 gezeigten Leuchte in einer perspektivischen Ansicht von schräg oben und hinten;

Figur 4

die in Figur 3 gezeigte Anordnung in einer perspektivischen Ansicht von schräg unten und hinten;

Figur 5

die in den Figuren 3 und 4 gezeigte Anordnung in einer perspektivischen Ansicht von schräg oben und vorne;

Figur 6

die in den Figuren 3 bis 5 gezeigte Anordnung in einer perspektivischen Explosionsdarstellung von schräg unten und hinten;

Figur 7

die in Figur 6 gezeigte Explosionsdarstellung in einer perspektivischen Ansicht von schräg oben und hinten;

Figur 8

eine Seitenansicht der in den Figuren 3 bis 5 gezeigten Anordnung; und

Figur 9

die in der Figur 8 gezeigte Seitenansicht ohne den Leuchtenarm.

The invention is described by way of example below with reference to the figures in which an advantageous exemplary embodiment of the invention is shown. In the figures show:

Figure 1

an embodiment of the lamp according to the invention in a perspective view obliquely from above and behind;

Figure 2

the perspective view of the in Figure 1 lamp shown, wherein parts of the lamp head have been omitted, in particular to make the swivel joint, the locking elements and the locking element visible;

Figure 3

in particular the lamp arm, the swivel joint, the locking elements and the locking element in the Figures 1 and 2 shown lamp in a perspective view obliquely from above and behind;

Figure 4

in the Figure 3 The arrangement shown in a perspective view obliquely from below and behind;

Figure 5

those in the Figures 3 and 4 The arrangement shown in a perspective view obliquely from above and from the front;

Figure 6

those in the Figures 3 to 5 The arrangement shown in a perspective exploded view obliquely from below and behind;

Figure 7

in the Figure 6 shown exploded view in a perspective view obliquely from above and behind;

Figure 8

a side view of the in the Figures 3 to 5 arrangement shown; and

Figure 9

those in the Figure 8 Side view shown without the lamp arm.

Figure 1 shows a lamp 1 according to a preferred embodiment of the present invention. The lamp 1 can be designed as an LED spotlight. For example, the lamp 1 is used as a museum lamp. The lamp 1 has a lamp head 2 for emitting light from a lamp such as an LED. In particular, the lamp head 2 can have the lighting means and / or other electrical and / or electronic components for operating the lamp 1. The lamp head 2 preferably has a cylindrical shape.

The lamp 1 also has a lamp arm (connecting element) 3. The lamp arm 3 can mechanically and preferably electrically connect the lamp 1 to a corresponding area. Such an area can be a light mounting rail, a light mounting rail system, a power rail adapter that can be or is connected to a light mounting rail, or generally a ceiling or wall. The electrical supply and / or the control of the lamp 1 or the lamp head 2, that is to say in particular the lamp and / or the other electrical and / or electronic components, is preferably carried out via the lamp arm 3. The electrical supply and / or control takes place preferably via electrical lines running within the lamp arm 3.

The lamp arm 3 preferably has an elongated or rod-shaped shape. The cross section of the lamp arm 3 is preferably circular, but can also have any other shape, for example an elliptical, rectangular, square or polygonal shape. The lamp arm 3 can have an end region 16 at its ends for, in particular, a form-fitting connection with a corresponding component. For a positive connection, the End region 16 have an angular, in particular polygonal cross section, for example a cross section composed of circular segments and straight lines.

As in particular in the Figures 2 to 7 The light 1 also has a swivel joint (swivel bracket) 4, which rotatably connects the light head 2 with the light arm 3 so that the light head 2 has a first axis of rotation or inclination axis 5 and a second axis of rotation or pivot axis with respect to the light arm 3 6 of the swivel joint 4 can be aligned. The axes of rotation 4, 5 are preferably not aligned parallel to one another. The first axis of rotation 5 is particularly preferably aligned perpendicular to the second axis of rotation 6, in particular such that the first axis of rotation 5 is perpendicular to the second axis of rotation 6. The second axis of rotation 6 is preferably an axis, in particular axis of symmetry, of the lamp arm 3. The first axis of rotation 5 preferably enables the lamp head 2 to be tilted in a rotational angle range of 0 ° to 90 ° around the first axis of rotation 5. The second axis of rotation 5 preferably enables the lamp head 2 to be pivoted in a rotational angle range from 0 ° to 360 ° around the second axis of rotation 6.

The lamp head 2 can have a bearing area 7 in which the swivel joint 4 is rotatably mounted to provide the first axis of rotation 5. In other words: the swivel joint 4 is preferably mounted rotatably in the bearing area 7 about the first axis of rotation 5, so that the lamp head 2 or the lamp arm 3 can be rotated about the axis of rotation 5. The bearing area 7 preferably has two bearing elements 8, 9, in each of which one end of the swivel joint 4 is rotatably mounted about the axis of rotation 5. The bearing elements 8, 9 each preferably have an opening 10, 11, for example a passage opening, in which an axle element 12, 13 corresponding to the respective opening 10, 11 and provided at the respective end of the swivel joint 4 is mounted. The axle element 12, 13 can be formed integrally or separately with the swivel joint 4. The respective axle element 12, 13 can have a cylindrical, in particular hollow-cylinder, shape. In a particularly preferred embodiment, the respective axle element 12, 13 is designed as a hollow rivet provided separately from the swivel joint 4, which is fitted into a corresponding opening or passage opening at the respective end of the swivel joint 4, for example by means of a force fit and / or form fit.

The swivel joint 4 is rotatably mounted in the bearing area 7, preferably with a (certain or defined) inhibition, so that the swivel joint 4 or the lamp head 2 can be held in a defined alignment with respect to the first axis of rotation 5, but still adjustable or can be aligned, in particular such that inadvertent adjustment of the lamp head 2 is avoided. The inhibition can be provided, for example, in that the bearing area 7 exerts a certain static friction force on the swivel joint 4 brought about by the mounting of the rotary joint 4 in the bearing area 7. For example, the fit between the opening 10 and the axle element 12 and / or the fit between the opening 11 and the axle element 13 can be designed so tight, in particular as a transition or press fit, to inhibit the respective axle element 12, 13 and thus the swivel joint 4 or the lamp head 2 to cause.

The storage area 7 can be provided integrally with the lamp head 2. Alternatively, the storage area 7 can also be provided separately from the lamp head 2 and / or adjustable in the lamp head 2. The lamp head 2 has, for example, a carrier plate 14 to which the bearing area 7 is detachably connected, for example by means of a screw connection. The bearing area 7 can be provided adjustably on the carrier plate 14, for example via elongated holes formed in the carrier plate 14 which are screwed to the bearing area 7.

The swivel joint 4 can, as in particular in the Figures 6 and 7th clearly recognizable, have an opening (lamp arm receptacle) 15 preferably provided in the center with respect to the swivel joint 4, in particular designed as a penetration opening in which the lamp arm 3 is rotatably mounted so that the lamp head 2 or the lamp arm 3 (relative to the lamp arm 3 or lamp head 2) is rotatable about the second axis 6. The lamp arm 3 or the end region 16 can preferably be introduced into the opening 15 from a direction above the swivel joint 4 in order to be rotatably mounted in the opening 15. For the axial fixation of the lamp arm 3 with respect to the second axis of rotation 6, a securing element 17, for example in the form of a securing ring, can also be provided. The securing element 17 is preferably in positive and / or non-positive contact with below the rotary joint 4 brought through the passage opening 15 through the lamp arm 3 or its end region 16 (see. For example Figure 8 ). The end region 16 is preferably designed to be narrower than the part of the lamp arm 3 adjoining it, so that a gradation is formed that runs from the end region 16 to the remaining part of the lamp arm 3. The swivel joint 4 is preferably provided between this step and the securing element 17. The securing ring 17 preferably has an opening through which the end region 16 can be guided so that the lamp arm 3 is axially secured with respect to the swivel joint 4.

Like in particular the Figure 5 can clearly be seen, the lamp arm 3 and / or the swivel joint 4 can each have a structure to limit the rotational mobility of the second axis of rotation 6, in particular such that the rotational mobility of the lamp arm 3 about the second axis of rotation 6 at an angle of rotation of 360 ° + / - 5 ° is limited. Both the lamp arm 3 and the swivel joint 4 can each have a structure 18, 19 which is designed, for example, as a stop or projection. As soon as the structures 18, 19 interact, that is to say come into mechanical contact with one another, the rotational mobility of the second axis of rotation 6 is limited.

The structure 19 on the side of the swivel joint 4 can be provided movable or dragging in such a way that when the structures 18, 19 interact, the lamp arm 3 can still be rotated about the second axis of rotation 6, namely (only) in a defined angle of rotation range. This angle of rotation range is preferably from 0 ° to 10 °. The mobility of the structure 19 with respect to the rotary joint 4 can, as in particular in FIG Figure 5 recognizable, can be brought about by the structure 19 being movably supported in a recess 20, for example in the form of a groove or an elongated hole, which runs corresponding to the rotational angle range. The recess 20 preferably has an arcuate shape, so that the center of this arc lies on the axis of rotation A. If the structure 19 strikes one of the ends of the recess 20, the rotational mobility about the second axis of rotation 6 is limited in the direction of this end; when the rotational mobility is limited, the structure 19 is then clamped between this end and the structure 18.

The respective structure 18, 19 can be formed or provided integrally or separately with the lamp arm 3 or swivel joint 4. In particular, the structure 18 can be provided separately from the lamp arm 3, for example via a ring 21 with which the structure 18 is integrally formed. The ring 21 is in turn connected to the lamp arm 3 in a non-positive and / or positive manner. As in particular in the Figures 6 and 7th Clearly recognizable, the opening of the ring 21 through which the lamp arm 3 is guided preferably has a shape corresponding to the end region 16 of the lamp arm 3, so that the ring 21 rotates non-rotatably with respect to the lamp arm via the form fit with the end region 16 caused by the mutually corresponding shapes 3 is connected. The ring 21 is preferably provided or clamped between the swivel joint 4 and the gradation running from the end region 16 to the remaining part of the lamp arm 3 and / or in contact with them.

In the exemplary embodiment shown in the figures, the lamp 1 also has a first locking element 30 which is positioned between a first release position in which the lamp head 2 can be aligned via the first axis of rotation 5 and a first locking position in which the first axis of rotation 5 is locked and accordingly the lamp head 2 cannot be rotated about the first axis of rotation 5, is movable. In the first locking position, the first locking element 30 can be in (only) non-positive and / or form-fitting contact with the swivel joint 4 in order to block a rotation of the lamp head 2 about the first axis of rotation 5. The contact between the rotary joint 4 and the locking element 30 is preferably a flat contact in order to lock the first axis of rotation 5 as quickly and effectively as possible. In the first locking position, the static friction force between the swivel joint 4 and the first locking element 30 is preferably so high that an adjustment / rotation of the lamp head 2 about the first axis of rotation 5 is avoided. The first locking element 30 is preferably mounted in the first bearing element 8.

As in the Figures 2 to 9 Shown by way of example, the first locking element 30 can be a tensioning element which is preferably mounted in the bearing element 8 and which surrounds at least the swivel joint 4 (at least partially) in order to be in frictional and / or form-fitting contact with the swivel joint 4 in the first locking position, so that the first axis of rotation 5 is locked. For this purpose, the corresponding contact surfaces of the clamping element 30 and the swivel joint 4, which cause the locking of the first axis of rotation 5, have a shape corresponding to one another, for example an arc shape. Flat contact between clamping element 30 and rotary joint 4 can thus be provided in a particularly simple manner. If the tensioning element 30 is tensioned, the tensioning element 30 comes closer and closer to the swivel joint 4 and finally comes into non-positive and / or positive contact with the swivel joint 4, that is to say in the first locking position.

The tensioning element 30 is preferably designed as a tensioning band (brake or friction band) and preferably wraps around the swivel joint 4. The tensioning element 30 can be made of an elastic material, for example metal or an elastomer (rubber). It is particularly preferred if the tensioning element 30 is formed from a metal strip, in particular bent.

In the exemplary embodiment shown in the figures, the lamp 1 also has a second locking element 40, which is positioned between a second release position in which the lamp head 2 can be aligned via the second axis of rotation 6 and a second locking position in which the second axis of rotation 6 is locked and accordingly the lamp head 2 cannot be rotated about the second axis of rotation 6, is movable. As in Figure 4 Shown by way of example, the second locking element 40 in the second locking position is preferably in frictional and / or form-fitting contact with a third locking element 50 provided in a rotationally fixed manner with respect to the second axis of rotation 6. If the second locking element 40 is moved towards the third locking element 50, this moves second locking element 40 in the second locking position. If the second locking element 40 moves away from the third locking element 50, the second locking element 40 moves back into the second release position.

The third locking element 50 is preferably provided non-rotatably with respect to the lamp arm 3, for example by means of a force fit and / or form fit, preferably only by means of a form fit, and thus serves as a “driver”. Like in particular the Figures 6 and 7th clearly show, the third locking element 50 can have an opening or passage opening 51, which is preferably provided centrally with respect to the locking element 50 and which has a shape that corresponds to the shape or cross section of the lamp arm 3, preferably the end region 16, in order to third locking element 50 with respect to the To make lamp arm 3 rotationally fixed by means of a form fit. As in Figure 4 As shown, it is preferred if, in the second locking position, the third locking element 50 is clamped between the swivel joint 4, ie an underside of the swivel joint 4, and the second locking element 40 in order to lock the second rotational axis 6.

To axially fix or secure the third locking element 50 with respect to the second axis of rotation 6, the third locking element 50 can be provided between the securing element 17 and the swivel joint 4 and from the securing element 17 (from below the third locking element 50 and the swivel joint 4) (loose) being held.

The third locking element 50 is preferably designed as a disk, that is to say, viewed in plan view of the third locking element 50, it has a preferably circular shape and is thin-walled. However, the third locking member 50 is not limited to a specific shape. Rather, any shape is suitable for the third locking element 50 which, when connected non-rotatably to the second axis of rotation 6 or to the lamp arm 3, can be brought into non-positive and / or positive contact with the second locking element 40 at any angle of rotation with respect to the second axis of rotation 6 is.

Like in particular the Figure 6 can be seen, the second locking element 40 can be movably received by the swivel joint 4, in particular movably in a translatory (linear) manner, in order to be moved between the second release position and the second locking position. The (translational) mobility of the second locking element 40 is indicated by the double arrow. The second locking element 40 is movably received by the rotary joint 4, preferably at one end of the rotary joint 4, preferably at the end of the rotary joint 4 on the side of the bearing element 8. The second locking element 40 can have at least one guide element 41 which is guided by a corresponding guide element 42 on the side of the rotary joint 4 in order to achieve the corresponding movement. In the as in Figure 6 The illustrated embodiment, the guide element 41 is designed as a pin (pin) which is guided in the guide element 42 designed as a corresponding hole. The second locking element 40 is thus received by the rotary joint 4 such that it can be moved translationally. It can also two guide elements or pins 41 can be provided, which are received in corresponding guide elements or bores 42 in order to bring about only a translational movement of the second locking element 40 with respect to the rotary joint 4.

As an alternative to the translational movement of the locking element 40, it can also be pivotably received by the swivel joint 4 via corresponding guide elements in order to be moved between the second release position and the second locking position; For example, for pivotably receiving the first locking element 40, a hinge can pivot the first locking element 40 with the swivel joint 4.

The second locking element 40 preferably has a solid structure. The second locking element 40 can in particular be designed as a shoe (analogous to a brake shoe). The second locking element 40 can have a friction surface opposite the third locking element 50 in order to thus bring about a high adhesive or sliding friction force between the second locking element 40 and the third locking element 50, i.e. in particular a flat contact between them.

In the exemplary embodiment shown in the figures, the lamp 1 also has a locking element (actuating device) 60 (operable by a fitter or operator) in order to move the first locking element 30 between the first release position and the second locking position. The locking element 60 can preferably be operated from outside the lamp 1 or from outside the lamp head 2. The locking element 60 can preferably be operated by means of a tool (screwdriver, Allen key, etc.) and / or without tools, that is to say, for example, through an area which is integrally formed with the locking element 60 and can be handled.

In the embodiment shown in the figures, the locking element 60 is designed as a screw (adjusting screw) so that the first locking element 30 can be moved between the first release position and the first locking position by a screwing movement of the screw. A nut 61 can be screwed onto the screw 60 so that the rotation of the screw 60 causes the nut 61 to move (translationally) along the screw shaft 62 or is moved, for example because the nut 61 cannot rotate with respect to the bearing element 8. The screw 60 can be mounted in the first bearing element 8, for example in a through hole 8 a formed in the bearing element 8. The mounting can for example be such that the screw is rotatable but axially fixed. The screw 60, in particular the screw shaft 62, can be supported on a support area 8b of the bearing element 8. Consequently, the movement of the nut 61 along the screw shaft 62 can be used to move the first locking element 30 between the first release position and the first locking position.

Alternatively, it can also be provided that the screw 60 is screwed into a bore, in particular a through bore, with a screw thread in order to move the screw as a whole with respect to the bore and thus with respect to the first locking element 30 or the first axis of rotation 5 by means of the screwing movement. In this way, the first locking element 30 can also be moved between the first release position and the first locking position.

In the particularly preferred embodiment shown in the figures, the clamping element 30 is tensioned by means of the locking element 60 in order to move it from the first release position into the first locking position, as described above. In a corresponding manner, the clamping element 30 is moved from the first locking position into the first release position in that the clamping element 30 is relaxed by means of the locking element 60. The nut 61 can, for example, be brought into contact with a surface of the clamping element 60 directed towards the swivel joint 4 in such a way that, by moving the nut 61 along the screw shaft 62 and away from the swivel joint 4, the nut 61 presses against this surface in order to close the clamping element 30 tighten. In a corresponding manner, the tensioning element 30 is relaxed when the nut 61 is moved in the direction of the swivel joint 4.

The locking element 60 can be connected to an end region 31 of the tensioning element 30, so that by means of the locking element 60, in particular by moving the nut 61 along the screw shaft 62 or by moving the screw 60 as a whole, this end region is moved away from the swivel joint 4, in order thus to tension (tighten) the tensioning element 30 and in To bring frictional and / or positive contact with the swivel joint 4. That is to say, the end region 31 can have the aforementioned surface with which the nut 61 can be brought into contact.

The end region 31 can be formed by the two ends of the tensioning element or tensioning strap 30, which, viewed in the direction of the manipulation direction of the locking element 60, preferably overlap (see, for example Figure 8 ). The end region 31 or the two ends forming the end region 31 can each have a passage opening 32 through which the screw shaft 62 is guided so that the nut 61 is then screwed onto the screw shaft 62. However, the tensioning element 30 does not have to have an end region 31, so that the tensioning element 30 can also be provided endlessly.

The locking element 60 is set up according to the invention to be moved between a release position in which the lamp head 2 can be aligned via the axes of rotation 5, 6, and a locking position in which the axes of rotation 5, 6 are (simultaneously) locked. In the exemplary embodiment shown in the figures, this takes place in that the locking element 60 interacts with at least one of the locking elements 30, 40 in such a way as to move both locking elements 30, 40 simultaneously between their release position and their locking position. So that the two locking elements 30, 40 can be moved simultaneously between the release position and the locking position, it can be provided that the first locking element 30 is arranged with respect to the second locking element 40 in such a way that by moving the first locking element 30 from the first release position into the first Locking position at the same time the second locking element 40 is moved from the second release position into the second locking position. For example, the first locking element 30 is arranged with respect to the second locking element 40 in such a way that by moving the first locking element 30 from the first release position into the first locking position, the first locking element 30 comes into non-positive and / or positive contact with the second locking element 40 in order to thereby also to move the second locking element 40 from the second release position into the second locking position.

The first locking element 30 can, for example, at least partially surround the second locking element 40 in order to thus define an area or space in which the swivel joint 4, the second locking element 40 and preferably the third locking element 50 are provided. By moving the first locking element 30 from the first release position into the first locking position, this area is narrowed or reduced, so that the first locking element 30 comes into non-positive and / or positive contact with both the swivel joint 4 and the second locking element 40, ie clings to the swivel joint 4 and the second locking element 40. The non-positive and / or positive contact between first locking element 30 and swivel joint 4 causes the first locking position, i.e. locking of the first axis of rotation 5 provided by swivel joint 4. The non-positive and / or positive contact between first locking element 30 and second locking element 40 causes First, that the second locking element 40 is moved in the direction of the swivel joint 4 and the third locking element 50 in order to finally reach the second locking position, that is to say, for example, to come into non-positive and / or positive contact with the third locking element 50. Consequently, the second axis of rotation 6 is then also locked.

If the first locking element 30 is thus preferably provided as a tensioning element, it at least partially surrounds or wraps around both the swivel joint 4 and the second locking element 30, for example in the form of a circular arc 33 wrapping around the swivel joint 4 and the second locking element 30 The space in which the swivel joint 4, the second locking element 40 and preferably the third locking element 50 are provided is thus particularly defined by the circular arc 33, so that the aforementioned narrowing or reduction of this area by tensioning (tightening) the tensioning element 30 and thus Reduction in the diameter of the circular arc 33 is effected. It is preferred if the respective surface of the swivel joint 4 and the second locking element 40, which can be brought into non-positive and / or positive contact with the clamping element 30, has a shape that corresponds to that of the clamping element 30, in particular that of the circular arc 33. It can thus be effected that the swivel joint 4 and the second locking element 40 simply come into flat contact with the clamping element 30.

Thus, both turning axes 5, 6 can be locked or released at the same time by means of only one locking element 60, that is to say in particular the two locking elements 30, 40 can be moved into their respective locking position. As described above by way of example, this can take place in that the fixing element 60 is functionally (directly) connected only to the first locking element 30. Alternatively, however, it can also be provided that the locking element 60 interacts both with the first locking element 30 and with the second locking element 40, that is to say is (directly) functionally connected to them. For example, the second locking element 40 can function in accordance with the first locking element 30, i.e. like the preferred clamping element described above, a single locking element interacting with both clamping elements at the same time in order to simultaneously move them into their respective locking position (and also back into their respective release position) move.

As in Figure 1 Illustrated by way of example, the lamp 1 can furthermore have a lamp housing 70 in which at least the swivel joint 4 and preferably the locking elements 30, 40 and particularly preferably the third locking element 50 are provided or received. The lamp arm 3 connected to the swivel joint 4 preferably protrudes from the lamp housing 70. The lamp housing 70 can also accommodate the carrier plate 14. The luminaire housing 70 can also have lighting means (for example LEDs) and / or other electrical and / or electronic components (not shown in detail) for operating the luminaire 1. The lamp housing 70 preferably has a cylindrical shape.

A lamp head attachment 71 can be connected to the lamp housing 70, for example by means of appropriate fastening means (screw connection, clip connection or other non-positive and / or positive fastening means). The lamp head attachment 71 preferably has the light emission opening of the lamp head 2.

The locking element 60 can be provided in the lamp housing 70 in such a way that it can be operated from outside the lamp housing 70, in particular from a rear side of the lamp housing 70. For example, the lamp housing 70 has a cover part 72 which has the rear side of the lamp housing 70 and in which the locking element 60 is mounted, for example via a through-hole is, so that the locking element 60 is accessible from outside the lamp housing 70 and can therefore be operated. The cover part 71 preferably has a shape which corresponds to that of the lamp housing 70, for example a circular shape. The cover part 71 is connected to the lamp housing 70 preferably via at least one fastening means 72 (screw, etc.), preferably via two fastening means 72.

Claims (14)

1. Luminaire (1), in particular LED spotlight, comprising:

   a lamp head (2),

   a lamp arm (3),

   a pivot joint (4) for the rotationally movable connection of the lamp head (2) to the lamp arm (3), so that the lamp head (2) can be aligned with respect to the lamp arm (3) via a first and a second axis of rotation (5, 6) of the pivot joint (4), and

   a fixing element (60) configured to be moved between a release position in which the lamp head (2) can be aligned via the axes of rotation (5, 6) and a locking position in which the axes of rotation (5, 6) are locked,

   further comprising:

   a first locking element (30) movable between a first release position in which the lamp head (2) can be aligned via the first axis of rotation (5) and a first locking position in which the first axis of rotation (5) is locked, and

   a second locking element (40) movable between a second release position in which the lamp head (2) can be aligned via the second axis of rotation (6) and a second locking position in which the second axis of rotation (6) is locked, wherein

   the fixing element (60) interacts with at least one of the locking elements (30, 40) so as to move both locking elements (30, 40) simultaneously between their release positions and their locking positions,

   characterized in that

   the first locking element (30) is a tensioning element which can be moved from the first release position into the first locking position by tensioning the tensioning element by means of the fixing element (60).
2. Luminaire (1) according to claim 1, wherein the first locking element (30) is arranged with respect to the second locking element (40) in such a way that, by moving the first locking element (30) from the first release position into the first locking position, the second locking element (40) is simultaneously moved from the second release position into the second locking position, and/or
   wherein the first locking element (30) is arranged with respect to the second locking element (40) in such a way that, by moving the first locking element (30) from the first release position into the first locking position, the first locking element (30) comes into force-fitting and/or positive-locking contact with the second locking element (40) in order to move the second locking element (40) from the second release position into the second locking position.
3. Luminaire (1) according to claim 1 or 2, wherein in the first locking position, the first locking element (30) is in force-fitting and/or positive-locking contact with the pivot joint (4) in order to lock the first axis of rotation (5).
4. Luminaire (1) according to one of the preceding claims, wherein in the second locking position, the second locking element (40) is in force-fitting and/or positive-locking contact with a third locking element (50), which is rotationally fixed with respect to the second axis of rotation (6), in order to lock the second axis of rotation (6), wherein the third locking element (50) is preferably rotationally fixed with respect to the lamp arm (3), e.g., by means of force fitting and/or positive locking,
   wherein preferably in the second locking position, the third locking element (50) is clamped between the pivot joint (4) and the second locking element (40) in order to lock the second axis of rotation (6), and/or
   wherein the third locking element (50) is preferably a disk.
5. Luminaire (1) according to one of the preceding claims, wherein the second locking element (40) is received movably, in particular translationally movably, by the pivot joint (4) in order to be moved between the second release position and the second locking position, and/or
   wherein the second locking element (40) is designed as a jaw.
6. Luminaire (1) according to one of the preceding claims, wherein the fixing element (60) is functionally connected only to the first locking element (30).
7. Luminaire (1) according to one of the preceding claims, wherein the fixing element (60) can be operated by means of a tool and/or without tools.
8. Luminaire (1) according to one of the preceding claims, wherein the fixing element (60) is a screw, so that the fixing element (60) can be moved between the release position and the locking position by a screw movement of the screw, wherein the first locking element (30) is preferably movable between the first release position and the first locking position by the screw movement.
9. Luminaire (1) according to one of the preceding claims, wherein the pivot joint (4) has an opening (15), in particular a through-opening, in which the lamp arm (3) is rotatably mounted in order to be rotatable about the second axis of rotation (6), and/or wherein the luminaire (1) preferably has a securing element (17), e.g., a retaining ring, for axially securing the lamp arm (3) with respect to the second axis of rotation (6), wherein the third locking element (50) is preferably provided between the securing element (17) and the pivot joint (4) in order to be axially secured with respect to the second axis of rotation (6).
10. Luminaire (1) according to one of the preceding claims, wherein the pivot joint (4) is rotatably mounted in a bearing region (7) of the luminaire (1), preferably rotatably with an escapement, in order to provide the first axis of rotation (5).
11. Luminaire (1) according to one of the preceding claims, wherein the first axis of rotation (5) and the second axis of rotation (6) are not aligned in parallel to one another, wherein the first axis of rotation (5) is preferably aligned perpendicularly to the second axis of rotation (6), preferably extends perpendicularly from the second axis of rotation (6).
12. Luminaire (1) according to one of the preceding claims, wherein the lamp arm (3) and/or the pivot joint (4) each have a structure (18, 19), e.g., a stop, for limiting the rotational movability of the second axis of rotation, wherein the rotational movability is preferably limited at a rotation angle of 365° +/- 5°, wherein the structure (19) on the side of the pivot joint (4) is in particular provided movably with respect to the pivot joint (4) in such a way that upon interaction of the structure (18) on the side of the lamp arm (3) with the structure (19) on the side of the pivot joint (4), the lamp arm (3) is still rotatable in a defined rotation angle range, in particular in a rotation angle range of 0° to 10°, about the second axis of rotation (6), and/or wherein the structure (18, 19) is preferably provided integrally or separately with the lamp arm (3) or pivot joint (4).
13. Luminaire (1) according to one of the preceding claims, wherein the lamp head (2) has a lamp housing (70) in which at least the pivot joint (4) and preferably the first, the second, and particularly preferably the third locking element (30, 40, 50) are provided, wherein an illuminant, e.g., LEDs, and/or other electric and/or electronic components for operating the luminaire (1) are furthermore preferably provided in the lamp housing (70).
14. Luminaire (1) according to one of the preceding claims, wherein the fixing element (60) can be operated from outside the luminaire (1), in particular from outside the lamp housing (70), preferably from a rear side of the lamp housing (70).

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