AT524918A1 - Lighting device and a music stand with such a lighting device - Google Patents

Abstract

An illuminating device (1) according to the present invention comprises an illuminating device (1) for illuminating an object, an arm having the illuminating device (1), the illuminating device (1) being arranged approximately parallel to the arm, and a position adjusting device having a linear guide device, wherein the arm and the lighting device (1) can be displaced in translation along a linear axis by means of the position adjustment device and the arm is arranged orthogonally to the linear axis.

Description

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P302377AT 1

06/04/2021 Austrian patent application Daniel Schuster P302377AT

Lighting device and a music stand with such a lighting device

The present invention relates to a lighting device and a music stand with such a lighting device.

CN 210295885 U discloses a lighting device for a sheet music holder on a piano. The lighting device comprises two telescopic arms, each with a joint in the middle, which are attached in an outer area on the back of the sheet music holder. The free ends of the telescopic arms are connected to a lighting device, so that the lighting device can be pivoted in the direction of the sheet music holder in a region on the front side of the sheet music holder. The lighting device itself is also rotatably mounted.

CN 209610297 U discloses a lighting device for a sheet music holder, the lighting device being arranged on the face of the sheet music holder. The lighting device has a wall running perpendicularly to the sheet music holder, at the upper end of which a type of hinge is attached, to which a second wall with a lighting device is attached, so that the lighting device can be pivoted in the direction of the sheet music holder.

The CH 606903 A5 has an adjustable glowstick holder for a sheet music holder. The adjustable light stick holder includes two interconnected articulated and angled angle levers. A first bell crank is arranged on the underside of the sheet music holder. A second bellcrank is connected to the first bellcrank and includes a glow stick. The second angle lever can be pivoted in the direction of the sheet music holder in an approximately horizontal position.

Document CN 211323568 U shows a tiltable sheet music holder which has two arcuate lamps on its front side, which are attached to the upper side of the sheet music holder and are bent in such a way that they illuminate the surface of the sheet music holder.

CN 210601223 U discloses a position shifting device for lamps, with two rails running parallel to one another being arranged, between which a pair of guide rollers are guided. A plate-shaped lamp is attached to the side of the guide rollers.

The document KR 20140000882 U describes a lamp device. The lamp assembly includes a rod-shaped lamp holder pivotally connected to a first leg. The first leg is also pivotably connected to a second leg, the second leg being fixable, for example, to a table edge. The lamp holder can be swiveled both horizontally and vertically by means of the swivel joints.

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P302377AT 2

At concerts, such as those found in large concert halls, but also on smaller stages or as accompaniments in television shows, it is common for the musicians to sit in darkened areas for reasons of atmosphere or the show. Therefore, there should be separate lighting for the notes.

In addition, the musicians often have the problem that the notes are not illuminated over the entire surface. At the same time, they have little time and often only one hand free to place the notes or adjust the lighting accordingly.

The invention is based on the object of providing a lighting device and a music stand with such a lighting device with which an object can be effectively illuminated and which is easy to handle.

A further object of the present invention is to provide a lighting device and a music stand with such a lighting device with which a predetermined area can be variably illuminated.

The object is solved by the subject matter of the independent patent claims 1 and 10. Advantageous refinements of the invention are specified in the respective dependent claims.

A lighting device according to the present invention comprises,

an illumination device for illuminating an object,

an arm having the lighting device, the lighting device being arranged approximately parallel to the arm and

a position adjustment device with a linear guide device,

wherein the arm and the lighting device are translationally displaceable along a linear axis by means of the position adjustment device and wherein the arm is arranged orthogonally to the linear axis.

The lighting device is provided for illuminating an object surface. According to the invention, this object surface can be a music support surface with two adjacent sheets of music or an open book of music. In principle, the lighting device can be suitable for all object surfaces that are of a similar size and nature.

Thanks to the position adjustment device, a user has the option of quickly and easily adjusting and variably aligning the lighting device according to his needs.

Musicians often need separate lighting for the notes when sitting in darkened areas. This is common, for example, in large concert halls, but also on smaller stages or as accompaniments in television shows, for reasons of atmosphere or the show.

In addition, there is often the problem that the notes cannot be illuminated over their entire surface, since otherwise other areas of the environment would also be illuminated.

At the same time, musicians have little time and often only one hand free to place the notes or adjust the lighting accordingly.

With the lighting device, the entire note support surface can be illuminated simultaneously and permanently, or any areas of the note support surface can be illuminated

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will. In order to achieve this, the arm with the lighting device is elongate and extends approximately along the entire width of the sheet music support surface. By means of the position adjustment device, the arm can be linearly displaced as desired along the linear axis, in or against the linear direction. The linear direction is a direction perpendicular to the arm and parallel to the sheet music surface. In principle, it is also possible to attach the arm in such a way that it extends along the length of the sheet music support surface.

The position adjustment device can have at least one gearwheel and at least one toothed rack, which mesh with one another in such a way that a position of the arm can be fixed along the linear axis, this position being referred to as the fixing position.

Since the arm is fixed in the fixing position by means of the gear wheel, it is safely and reliably avoided that the position of the arm is accidentally shifted when it is touched.

The position adjustment device can have an actuating button which is connected to the gearwheel, with the gearwheel being able to be disengaged from the toothed rack by actuating the actuating button and being able to be brought from the fixing position into a release position, so that the lighting device can be displaced along the linear axis.

It is possible to disengage the gear wheel from the at least one toothed rack by means of the actuating button. This is accomplished by pulling the actuator knob orthogonally to the linear direction. If the actuating button is held in this release position and moved in the linear direction, then the lighting device is only guided by the linear guide device. It is thus possible to quickly and roughly adjust the lighting device in the linear direction. While the toothed wheel is out of engagement with the toothed rack, the linear guide device ensures that the arm is guided appropriately and that it is sufficiently stable.

The operating button can be operated by a user with one hand. It can thus be operated by a musician who is holding his instrument in the other hand at the same time.

By rotating the actuating knob, the gear wheel can be rotated in such a way that the lighting device can be linearly displaced along the linear axis and/or that the arm and the lighting device can be rotated about an axis of rotation of the arm that is arranged orthogonally to the linear axis.

If the gear wheel is brought back into engagement with the at least one toothed rack by means of the actuating button, then the actuating button is again in the fixing position. In this fixing position, the gear wheel can be moved along the toothed rack by turning the actuating knob. A fine adjustment of the lighting device in the linear direction is thus possible. In this case, it can be provided that the connection between the toothed wheel and the toothed rack is designed to be self-locking in such a way that accidental adjustment by touching the lighting device is prevented.

At the same time, it is possible, both in the release position and in the fixing position, to rotate the lighting device about an axis of rotation of the arm, which is arranged orthogonally to the linear axis, by rotating the actuating knob. Thus, a rotation of the lighting device about the axis of rotation is possible while the lighting device

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P302377AT 4

is simultaneously moved in the linear direction. In the release position, the lighting device can also be rotated about the axis of rotation without being moved in the linear direction at the same time.

The arm can be rotated in such a way that illumination is possible from the front side of the object surface as well as from an opposite side. In addition, the angle of incidence of the illumination device onto the object surface can be adjusted by rotating about the axis of rotation.

The actuating knob can be coupled to the gear wheel via a spring, with a spring force of the spring holding the gear wheel in meshing engagement with the toothed rack, and preferably holding the actuating knob in the fixing position.

Since the actuating button is held in the fixing position by means of the spring, it is avoided that the gearwheel unintentionally disengages from the toothed rack.

Furthermore, the actuating button can simply be released after a rough adjustment and does not have to be pressed in again. The spring ensures that the gear takes an exact position between the racks.

The linear guide device can include at least one guide roller and at least one guide rail on which the guide roller is linearly guided.

In this way, safe and reliable guidance of the arm and the lighting device is achieved.

The position adjustment device can have a profile-like housing with a functional space that extends along the linear axis, with two toothed racks being arranged parallel and spaced apart from one another in the functional space, and the gear wheel being arranged between the two toothed racks and meshing with them, and with in the functional space two guide rails are arranged parallel and spaced apart from each other and a guide roller or preferably two guide rollers are arranged between the two guide rails.

The housing protects the components of the position adjustment device from external influences, such as impacts or dust. In this way, high functional accuracy and a long service life are achieved.

The arm may include a first arm section which is connected to the position adjustment device and which extends in the direction of the rotary axis orthogonally to the linear axis, a second arm section which is connected to the first arm section and arranged orthogonally thereto, and a third arm section which is connected to the second sub-arm is connected and arranged orthogonally thereto and which has the lighting device, wherein the first sub-arm and the third sub-arm are arranged parallel and offset to one another, and wherein the first and the third sub-arm can be rotated about the axis of rotation of the arm by a rotary movement of the actuating knob are, so that the lighting device is rotationally pivotable.

The lighting device is integrated into the third partial arm, as a result of which it rotates about the axis of rotation at a distance which corresponds to the length of the second partial arm. Thus, by rotating the arm about the axis of rotation, the angle of incidence and the distance between the lighting device and the object surface can be adjusted.

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The third sub-arm can preferably be connected to the second sub-arm such that it can rotate about its longitudinal axis.

Due to the fact that the third sub-arm can be rotated about its own longitudinal axis, the lighting device can be rotated without rotating the actuating button. It is thus possible to simply rotate the lighting device while the position of the lighting device in the linear direction has already been selected.

According to this particularly preferred embodiment, the angle of incidence and the distance between the illumination device and the object surface can be adjusted independently of one another by rotating the arm about the axis of rotation on the one hand and rotating the partial arm about its longitudinal axis on the other.

The lighting device is preferably designed to hold an LED rail.

Of course, other lighting means can also be provided for the lighting device. In particular, lighting means with different color temperatures can be provided in order to offer the user a light that is as pleasant as possible for the eyes in the dark environment.

Additionally and/or alternatively, the position adjustment device can also be designed with an electric linear drive for automatic adjustment.

An electric linear drive enables precise adjustment of the arm and the lighting device.

Furthermore, a music stand is provided with an above-explained lighting device according to the present invention, comprising

a stand and

a music rest which is firmly connected to the base and which has a music rest surface which is designed to accommodate one or more sheets of music,

wherein the lighting device can be attached to the sheet music support surface so that it is illuminated by the lighting device.

The invention is described below with reference to an embodiment shown in the figures. These show in:

1 shows a schematic representation of a music stand with a lighting device according to the invention; in

2 shows a schematic representation of the lighting device according to the invention in a perspective view; in

3 shows a schematic representation of the lighting device according to the invention in a further perspective view; in

4 shows a detailed illustration of the lighting device according to the invention; in

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P302377AT 6

5 shows a detailed illustration of the lighting device according to the invention in a further view; in

6 shows a detailed illustration of a position adjustment device of the lighting device according to the invention; in

7 shows an exploded view of the lighting device according to the invention; in

8 shows a schematic illustration of the lighting device according to the invention according to a further exemplary embodiment in a perspective view; in

9 shows a schematic illustration of the lighting device according to the invention according to the further exemplary embodiment in a further perspective view; in

10 shows a detailed illustration of the lighting device according to the invention according to the further exemplary embodiment; in

11 shows a detailed representation of the lighting device according to the invention according to the further exemplary embodiment in a further view and in

12 shows a detailed illustration of a position adjustment device of the lighting device according to the invention according to the further exemplary embodiment.

A lighting device 1 according to the invention is described in more detail below using an exemplary embodiment (FIGS. 1-7).

The lighting device 1 according to the invention comprises a position adjustment device 2 and an arm 3 which has a lighting device 4 .

The position adjustment device 2 comprises a housing 5. The housing 5 is designed as an elongate profile with an approximately rectangular cross section. It has four walls extending approximately in a linear direction 6 .

The lighting device 1 can be arranged on a music stand 33 or connected to it via a first guide wall 9 . Appropriate fastening means can be provided for this purpose (not shown).

A second guide wall 10 is arranged opposite the first guide wall 9 .

The first guide wall 9 and the second guide wall 10 are connected to one another via a first end wall 11 and a second end wall 12 .

Only wall sections 13 are provided in the area between the first guide wall 9 and the second guide wall 10, with the wall sections 13 in the area of the arm 3 forming a displacement recess 14 extending in the linear direction 6, in which the arm 3 can be displaced in the linear direction 6.

In an area of the profile opposite the displacement recess 14, a

Linear direction 6 extending adjustment recess 15 is provided, which is also limited by wall sections 13.

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P302377AT 7

The first guide wall 9, the second guide wall 10, the first end wall 11 and the second end wall 12 delimit a functional space 16.

In the functional space 16, two racks 17, 18 are arranged. A first rack 17 is connected to the first guide wall 9 and extends parallel to the linear direction 6. A second rack 18 is connected to the second guide wall 10 and also extends parallel to the linear direction 6. The two racks 17, 18 are arranged opposite one another. The toothed racks 17, 18 are preferably arranged directly adjacent to the second end wall 12.

Two guide rails 19, 20 are spaced from the two racks 17, 18 in the functional space 16 arranged. A first guide rail 19 is connected to the first guide wall 9 and extends parallel to the linear direction 6. A second guide rail 20 is connected to the second guide wall 10 and also extends parallel to the linear direction 6. The two guide rails 19, 20 are arranged opposite one another.

A shaft section 21 extends orthogonally to the linear direction 6 along an axis of rotation 8 through the displacement recess 14 into the housing 5. The shaft section 21 runs along the axis of rotation 8 through the housing 5 and extends through the adjustment recess 15 into an area outside the housing 5.

A gear wheel 22 is arranged on the shaft section 21 in the area of the toothed racks 17 , 18 . The gear wheel 22 is connected to the shaft section 21 in a rotationally fixed manner. The gear wheel 22 is arranged between the two toothed racks 17, 18 in such a way that it meshes with them. The gear 22 is rotatably received between the toothed racks 17, 18 and is translationally displaceable in the linear direction 6.

The toothed racks 17, 18 and the gearwheel 22 can be designed magnetically, so that the gearwheel 22 is additionally held in engagement with the toothed racks 17, 18 by a magnetic force.

Two guide rollers 23 are coupled to the shaft section 21 in the area of the guide rails 19 , 20 . The guide rollers 23 are connected to one another in the region of their axes of rotation by means of a connecting piece 24 . The connecting piece 24 has a through opening 25 in a region between the guide rollers 23 . The shaft portion 21 extends through the through hole 25 of the connector 24. In this way, the shaft portion 21 is rotatably supported and slidably coupled to the guide rollers 23.

The guide rollers 23 are arranged one behind the other in the linear direction 6 and are guided between the two guide rails 19 , 20 . The guide rollers 23 are thus rotatably accommodated between the guide rails 19, 20 and can be displaced in a translatory manner in the linear direction 6.

The two guide rails 19, 20 and the two guide rollers 23 together form a linear guide device.

A spring 26 surrounding the shaft section 21 is provided between the toothed wheel 22 and the guide rollers 23 . In a fixing position, in which the gear wheel 22 is in meshing engagement with the toothed racks 17, 18, the spring 26 is in a relaxed state. The spring 26 acts on the gear wheel 22 with a corresponding spring force in such a way that it is held in engagement with the toothed racks 17, 18 and thus in the fixing position.

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P302377AT 8

At the same time, the connecting piece 24 forms a stop for the spring 26 opposite the gearwheel 22 . The spring 26 is a coil spring, for example.

An actuating button 27 is arranged on that part of the shaft section 21 which extends through the adjustment recess 15 into an area outside the housing 5 . The actuating knob 27 is preferably a rotary knob with a profile that can be easily gripped with the fingers.

According to this exemplary embodiment, the following components are arranged one after the other along the shaft section 21: the operating button 27, the guide rollers 23 and the gear wheel 22.

The shaft section 21 can be pulled along the axis of rotation 8 against the spring force of the spring 26 with the actuating button 27 . The shaft portion 21 is slid through the through hole 25 of the connector 24 . Since the gear wheel 22 is connected to the operating button 27 via the shaft section 21, this is brought out of engagement with the toothed racks 17, 18.

By releasing the actuating button 27, the gear wheel 22 is brought back into engagement with the toothed racks 17, 18 by the spring 26. The first end wall 11 serves as a stop wall for the actuating button 27.

The racks 17, 18 and the gear 22 are preferably chamfered in such a way that the gear 22 moves directly back into engagement with the racks 17, 18 when the actuating button 27 is released. There is no intermediate position possible in which the teeth of the gear 22 hit the teeth of the racks 17, 18 and block each other.

The shaft section 21 is rigidly coupled to a first partial arm 28 of the arm 3 outside of the housing 5 in a region of the displacement recess 14 . A coupling 38 of the shaft section 21 to the first partial arm 28 is preferably a suitable plug connection. The coupling 38 can be a frictional connection. For example, the partial arm 28 has a pin and the shaft section 21 has a corresponding recess into which the pin can be pushed with a force fit. The partial arm 28 is arranged along the axis of rotation 8 .

A second arm part 29 is connected to the first arm part 28 outside the housing. The second partial arm 29 is arranged orthogonally to the first partial arm 28 .

The second partial arm 29 is connected to a third partial arm 30 . The third partial arm 30 is in turn arranged orthogonally to the second partial arm 29 and is thus arranged parallel to the first partial arm 28 and offset by the length of the second partial arm 29 to the first partial arm 28 . The third partial arm 30 has the lighting device 4 .

The lighting device 4 is preferably an LED bar that is integrated into the third partial arm 30 . A beam angle of the LED rail is approximately 100° or approximately 120° or approximately 140°.

At the connection between the second partial arm 29 and the third partial arm 30 is a swivel joint

31 attached. The swivel joint 31 allows the third arm part 30 to rotate about its own axis.

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A method according to the invention of the lighting device 1 described above is explained in more detail below.

In the fixing position, rotating the actuating button 27 causes the shaft section 21 to rotate, with the shaft section 21 rotating about the axis of rotation 8 .

Since the shaft section 21 is firmly connected to the gear wheel 22, the gear wheel 22 rotates with it and moves between the toothed racks 17, 18 in the linear direction 6.

At the same time, the shaft section 21 moves in the linear direction 6. Since the shaft section 21 is coupled to the guide rollers 23, it is guided by the guide rollers 23 along the guide rails 19, 20.

The first partial arm 28 of the arm 3 is firmly connected to the shaft section 21 . As a result, the arm 3 rotates about the axis of rotation 8 and moves translationally in the linear direction 6.

This translational movement of the arm 3 in the fixing position can be referred to as fine adjustment, since moving the gear wheel 22 between the toothed racks 17, 18 enables step-by-step adjustment in the linear direction 6.

By actuating the actuating knob 27, the actuating knob 27 is transferred from the fixing position to a release position. In the process, the actuating button 27 is pulled away from the housing 5 of the position setting device 2 along the axis of rotation 8 .

Due to the connection of the actuating knob 27 to the gear wheel 22 via the shaft section 21, the gear wheel 22 is disengaged from the toothed racks 17, 18.

At the same time, the spring 26, which is located between the gear wheel 22 and the connecting piece 24 of the guide rollers 23, is compressed.

In this release position, the shaft section 21 with the arm 3 is guided solely by the guide rollers 23 in the guide rails 19, 20 and the arm 3 can be moved in a translatory manner by moving the actuating button 27 in the linear direction 6 or can be moved linearly in the linear direction 6 .

This translational movement of the arm 3 in the release position can be referred to as coarse adjustment, since the arm 3 can be moved quickly in the linear direction 6 .

In the release position, the operating button 27 and thus the arm 3 can continue to

Rotate axis of rotation 8. With this rotation of the arm 3 in the release position, the toothed wheel 22 does not move between the racks 17, 18, as a result of which no movement of the arm 3 in the linear direction 6 is caused. The arm 3 can thus be rotated independently of a movement in the linear direction 6 .

In order to transfer the actuating knob 27 and the gearwheel 22 from the release position to the fixing position again, the actuating knob 27 simply has to be released again.

The spring force of spring 26 forces gear wheel 22 back into meshing engagement with toothed racks 17, 18.

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The first end wall 11 serves as a stop wall for the actuating button 27, so that the gear wheel 22 cannot slip out of engagement on the side of the toothed racks 17, 18 opposite the spring 26.

Another embodiment is described below (Figs. 8-12). Identical parts have the same reference numbers as in the previous exemplary embodiment. In addition, the above explanations apply equally to the parts of the other exemplary embodiment.

The further exemplary embodiment differs from the previous exemplary embodiment in that no actuating button 27 is provided for adjusting the lighting device 4 along the linear axis 7 and in that the first end wall 11 has no adjustment recess 15 . Furthermore, in the further exemplary embodiment, the arm 3 is designed in one piece and no longer has any partial arms.

The lighting device 1 includes the position adjuster 2 and the arm 3 having the lighting device 4 .

The position adjustment device 2 comprises the housing 5. The housing 5 is designed as an elongate profile with an approximately rectangular cross section.

The housing 5 has the first guide wall 9 extending approximately in the linear direction 6 , the second guide wall 10 being arranged opposite the first guide wall 9 .

The first guide wall 9 and the second guide wall 10 are connected to one another via the first end wall 11 and the second end wall 12 .

Only the wall sections 13 are provided in the second end wall 12 , the wall sections 13 in the region of the arm 3 forming the displacement recess 14 which extends in the linear direction 6 and in which the arm 3 can be displaced in the linear direction 6 .

The first guide wall 9, the second guide wall 10, the first end wall 11 and the second end wall 12 delimit the functional space 16.

In the functional space 16, the two guide rails 19, 20 are arranged. The first guide rail 19 is connected to the first guide wall 9 and extends parallel to the linear direction 6. The second guide rail 20 is connected to the second guide wall 10 and also extends parallel to the linear direction 6. The two guide rails 19, 20 are arranged opposite one another.

The two toothed racks 17, 18 are spaced apart from the two guide rails 19, 20 in the functional space 16. The first rack 17 is connected to the first guide wall 9 and extends parallel to the linear direction 6. The second rack 18 is connected to the second guide wall 10 and also extends parallel to the linear direction 6. The two racks 17, 18 are arranged opposite one another.

The shaft section 21 extends orthogonally to the linear direction 6 along an axis of rotation 40 through the displacement recess 14 into the housing 5. The shaft section 21 runs along the axis of rotation 40 through the housing 5 and ends in an area near the first end wall 11 within the housing 5.

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P302377AT 11

A bushing 39 is coupled to the shaft section 21 within the functional space 16 directly adjacent to the displacement recess 14 . The bushing 39 has a through opening (not shown) in the area of its axis of rotation. The shaft portion 21 extends through the through hole of the bushing 39. In this way, the shaft portion 21 is rotatably supported and slidably coupled to the bushing 39. As shown in FIG. The bushing 39 can be displaced translationally in the linear direction 6 with the shaft section 21 .

The bushing 39 is designed so that it is not possible to reach into the functional space 16 with the finger in the region of the shaft section 21 and protects a user from pinching his finger.

The two guide rollers 23 are coupled to the shaft section 21 in the area of the guide rails 19 , 20 . The guide rollers 23 are connected to one another in the region of their axes of rotation by means of the connecting piece 24 . The connecting piece 24 has the through opening 25 in a region between the guide rollers 23 . The shaft portion 21 extends through the through hole 25 of the connector 24. In this way, the shaft portion 21 is rotatably supported and slidably coupled to the guide rollers 23.

The guide rollers 23 are arranged one behind the other in the linear direction 6 and are guided between the two guide rails 19 , 20 . The guide rollers 23 are thus rotatably accommodated between the guide rails 19, 20 and can be displaced in a translatory manner in the linear direction 6.

The gear wheel 22 is arranged on the shaft section 21 in the area of the toothed racks 17 , 18 . The gear wheel 22 is connected to the shaft section 21 in a rotationally fixed manner. The gear wheel 22 is arranged between the two toothed racks 17, 18 in such a way that it meshes with them. The gear 22 is rotatably received between the toothed racks 17, 18 and is translationally displaceable in the linear direction 6.

The spring 26 surrounding the shaft section 21 is provided between the guide rollers 23 and the gear wheel 22 . In the fixing position, in which the gear wheel 22 is in meshing engagement with the toothed racks 17, 18, the spring 26 is in a relaxed state. The spring 26 acts on the gear wheel 22 with a corresponding spring force in such a way that it is held in engagement with the toothed racks 17, 18 and thus in the fixing position.

At the same time, the connecting piece 24 forms a stop for the spring 26 opposite the gearwheel 22 .

According to this further exemplary embodiment, the following components are arranged one after the other along the shaft section 21: the gear wheel 22, the guide rollers 23 and the bushing 39.

The shaft section 21 is rigidly coupled to the arm 3 outside the housing 5 in a region of the displacement recess 14 . The arm 3 is arranged along the axis of rotation 40 and has the lighting device 4 .

The shaft section 21 can be pulled along the axis of rotation 40 against the spring force of the spring 26 with the arm 3 . The shaft portion 21 is slid through the through hole of the bush 39 and the through hole 25 of the connector 24 . Since the gear wheel 22 is connected to the arm 3 via the shaft section 21, this is brought out of engagement with the toothed racks 17,18.

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P302377AT 12

By releasing the arm 3, the gear wheel 22 is brought back into engagement with the toothed racks 17, 18 by the spring 26.

The coupling 38 between the shaft section 21 and the arm 3 can be designed in such a way that the arm 3 can be rotated about the axis of rotation 40 independently of the shaft section 21 .

A method for the further exemplary embodiment described above is explained in more detail below.

The arm 3 is fixedly coupled to the shaft portion 21 . In the fixing position, rotating the arm 3 causes the shaft section 21 to rotate, with the shaft section 21 rotating about the axis of rotation 40 .

Since the shaft section 21 is firmly connected to the gear wheel 22, the gear wheel 22 rotates with it and moves between the toothed racks 17, 18 in the linear direction 6.

At the same time, the shaft section 21 moves in the linear direction 6. Since the shaft section 21 is coupled to the guide rollers 23, it is guided by the guide rollers 23 along the guide rails 19, 20.

Thus, the arm 3 moves translationally in the linear direction 6.

This translational movement of the arm 3 in the fixing position can be referred to as fine adjustment, since moving the gear wheel 22 between the toothed racks 17, 18 enables step-by-step adjustment in the linear direction 6.

By pulling on the arm 3, the gear wheel 22 is transferred from the fixing position to the release position. The arm 3 is pulled away from the housing 5 of the position adjustment device 2 along the axis of rotation 40 .

Due to the connection of the arm 3 to the gear 22 via the shaft portion 21, the gear 22 is disengaged from the racks 17,18.

At the same time, the spring 26, which is located between the connecting piece 24 of the guide rollers 23 and the gear wheel 22, is compressed.

In this release position, the shaft section 21 with the arm 3 is guided solely by the guide rollers 23 in the guide rails 19, 20 and the arm 3 can be moved in a translatory manner by moving the actuating button 27 in the linear direction 6 or can be moved linearly in the linear direction 6 .

This translational movement of the arm 3 in the release position can be referred to as coarse adjustment, since the arm 3 can be moved quickly in the linear direction 6 .

In the release position, the arm 3 can continue to be rotated about the axis of rotation 40 . With this rotation of the arm 3 in the release position, the toothed wheel 22 does not move between the racks 17, 18, as a result of which no movement of the arm 3 in the linear direction 6 is caused. The arm 3 can thus be rotated independently of a movement in the linear direction 6 .

In order to move the arm 3 and the gear 22 back from the release position to the fixing position, the arm 3 simply has to be released again.

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The spring force of spring 26 forces gear wheel 22 back into meshing engagement with toothed racks 17, 18.

A music stand 32 with the lighting device 1 explained above is described in more detail below.

The music stand 32 comprises a base 33 and a music rest 34.

The sheet music support 34 has a rectangular sheet music support surface 35 which is designed to hold sheets of music or a music book 36 .

A note holder 37 which extends approximately in the horizontal direction and which prevents the sheets of music 36 from falling is arranged on the note support 34 perpendicularly to the note support surface 35 .

The lighting device 1 can be arranged via the first guide wall 9 on the music support surface 35 of the music stand 32 or can be connected to it by means of a corresponding fastening means. The fastening means can be a magnet holder or a screw connection.

The lighting device 1 can be arranged in a lateral edge area of the note support surface 35 in such a way that the housing 5 is arranged orthogonally to the note holder 37 and the third partial arm 30 can be displaced parallel to the note holder 37 in the linear direction 6 .

In the above-mentioned exemplary embodiments, two racks 17, 18 are provided for guiding the gear wheel 22 and two guide rails 19, 20 for guiding the guide rollers 23. In principle, it is also possible to provide only one toothed rack or one guide rail.

In the above embodiments, two guide rollers 23 are provided, which are connected to the connecting piece 24 and which guide the shaft section 21 . However, it is also possible to provide only one guide roller, which has a through-opening in the region of its axis of rotation. The shaft section 21 then extends through the through opening of this one guide roller. In this way, the shaft section 21 is rotatably mounted and displaceably coupled to this guide roller and can be displaced translationally in the linear direction 6 .

Additionally and/or alternatively, the position adjustment device can also be designed with an electric linear drive for automatic adjustment. A linear motor can be provided which drives the linear guide device. As a result, the arm 3 with the lighting device 4 can be moved translationally in the linear direction 6 . A corresponding switch can be provided on the lighting device 1, which enables activation of the linear motor. There are preferably two switches which allow the arm 3 with the lighting device 4 to be moved in both directions.

In the exemplary embodiments mentioned above, the lighting device 1 is provided for the music stand 32 and for lighting the music support surface 35 . The lighting device 1 can also be provided for any surfaces or objects to be illuminated, for example also for distributors, plan holders, whiteboards, standing or office tables. For this purpose, the size of the lighting device 1 is adapted according to the size of the area to be illuminated.

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P302377AT

1 lighting device 2 position adjustment device 3 arm

4 lighting device 5 housing

6 linear direction

7 linear axis

8 axis of rotation

9 first guide wall 10 second guide wall 11 first end wall

12 second end wall

13 wall section

14 sliding recess 15 adjustment recess

16 function room

17 first rack

18 second rack

19 first guide rail 20 second guide rail

21 Shaft Section 22 Gear

23 Leadership

24 connector 25 through hole 26 spring

27 operating button 28 first partial arm

29 second partial arm 30 third partial arm

31 pivot

32 music stands

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Reference List

33 stand

34 note pad

35 note support surface

36 sheet music/music book 37 music holder

38 pairing

39 socket

40 axis of rotation

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Claims (1)

15 20 25 30 35 40 45 P302377AT 16 Austrian patent application Daniel Schuster P302377AT Claims 1. A lighting device (1) comprising an illumination device (4) for illuminating an object, an arm (3) having the lighting device (4), the lighting device (4) being arranged approximately parallel to the arm (3) and a position adjustment device (2) with a linear guide device, the arm (3) and the lighting device (4) being translationally displaceable along a linear axis (7) by means of the position adjustment device (2) and the arm (3) being arranged orthogonally to the linear axis (7). is. 2. Lighting device (1) according to claim 1, characterized in that the position adjustment device (2) has at least one toothed wheel (22) and at least one toothed rack (17, 18) which mesh with one another in such a way that a position of the arm ( 3) can be fixed along the linear axis (7), this position being referred to as the fixing position. 3. Lighting device (1) according to claim 1 or 2, characterized in that the position adjustment device (2) has an actuating button (27) which is connected to the gear wheel (22), wherein by actuating the actuating button (27) the gear wheel ( 22) can be disengaged from the toothed rack (17, 18) and can be brought from the fixing position into a release position, so that the lighting device (4) can be displaced along the linear axis (7) and wherein preferably by rotating the actuating knob (27) the gear wheel (22) can be rotated in such a way that the lighting device (4) can be linearly displaced along the linear axis (7) and/or that the arm (3) and the lighting device (4) are about an axis of rotation (8) of the arm (3) , which is arranged orthogonally to the linear axis (7), are rotatable. 4. Lighting device (1) according to one of Claims 1 to 3, characterized in that the actuating button (27) is coupled to the gear wheel (22) via a spring (26), a spring force of the spring (26) actuating the gear wheel (22 ) in meshing engagement with the toothed rack (17, 18), and preferably keeps the actuating knob (27) in the fixing position. 5. Lighting device (1) according to one of claims 1 to 4, characterized in that the linear guide device comprises at least one guide roller (23) and at least one guide rail (19, 20) on which the guide roller (23) is linearly guided. 15 20 25 30 35 40 P302377AT 17 10 Lighting device (1) according to any one of claims 1 to 5, characterized, that the position adjustment device (2) has a profile-like housing with a functional space (16) which extends along the linear axis (7), with two toothed racks (17, 18) being arranged parallel and spaced apart from one another in the functional space (16) and the gear wheel ( 22) is arranged between the two toothed racks (17, 18) and meshes with them, and wherein in the functional space (16) two guide rails (19, 20) are arranged parallel and spaced apart from one another and a guide roller (23) or preferably two Guide rollers (23) are arranged between the two guide rails (19, 20). Lighting device (1) according to any one of claims 1 to 6, characterized, that the arm (3) a first partial arm (28) which is connected to the position adjustment device (2) and which extends in the direction of the axis of rotation (8) orthogonally to the linear axis (7), a second sub-arm (29) connected to and orthogonal to the first sub-arm (28), and a third sub-arm (30) which is connected to the second sub-arm (29) and is arranged orthogonally thereto and which has the lighting device (4), wherein the first sub-arm (28) and the third sub-arm (30) are arranged parallel and offset to one another and wherein the first partial arm (28) and the third partial arm (30) can be rotated about the axis of rotation (8) of the arm (3) by a rotary movement of the actuating button (27), so that the lighting device (4) can be pivoted in rotation. Lighting device (1) according to claim 7, characterized, that the third partial arm (30) is rotatably connected to the second partial arm (29) about its longitudinal axis. Lighting device (1) according to claim 1, characterized, that the lighting device (4) is preferably designed to hold an LED rail. Music stand (32) with a lighting device (1) according to any one of claims 1 to 9, comprising a base (33) and a sheet music support (34) which is firmly connected to the base (33) and which has a sheet music support surface (35) which is designed to accommodate one or more sheets of music (36), wherein the lighting device (1) can be attached to the note support surface (35) so that it is illuminated by the lighting device (4).