阅读说明：本技术 用于聚光灯的可调整式载体结构以及聚光灯 (Adjustable carrier structure for spotlight and spotlight ) 是由 埃尔温·梅尔兹纳 于 2019-06-19 设计创作，主要内容包括：描述了一种用于聚光灯(10)的可调整式载体结构(12)。该载体结构包括：光学部件载体(14),在该光学部件载体上能够紧固光学部件(16)；用于将该载体结构(12)紧固在该聚光灯(10)上的联接装置(20)；以及至少一个螺纹转轴(28)。后者具有至少第一螺纹转轴端部,该螺纹转轴端部轴向固定地且防旋转地支承在该光学部件载体(14)上,并且通过与该螺纹转轴(28)相对应的螺纹衬套与该联接装置(20)连接。在此,该螺纹衬套轴向固定地且可旋转地与该联接装置(20)连接。该螺纹转轴(28)与该可调整式载体结构(12)的光轴(24)大体上平行地延伸。该第一螺纹转轴端部与该联接装置(20)的间距能够通过旋转该螺纹衬套来设定。此外,提出一种具有这样的载体结构(12)的聚光灯(10)。(An adjustable carrier structure (12) for a spotlight (10) is described. The carrier structure comprises: an optical component carrier (14) on which an optical component (16) can be fastened; a coupling device (20) for fastening the carrier structure (12) on the spotlight (10); and at least one threaded spindle (28). The latter has at least a first threaded spindle end which is supported axially fixedly and in a rotationally fixed manner on the optical component carrier (14) and is connected to the coupling device (20) by means of a threaded bushing corresponding to the threaded spindle (28). The threaded bushing is connected to the coupling device (20) in an axially fixed and rotatable manner. The threaded spindle (28) extends substantially parallel to the optical axis (24) of the adjustable carrier structure (12). The distance between the first threaded spindle end and the coupling device (20) can be set by rotating the threaded bushing. Furthermore, a spotlight (10) having such a carrier structure (12) is proposed.)

1. An adjustable carrier structure (12) for a spotlight (10), the carrier structure having:

an optical component carrier (14) on which an optical component (16) can be fastened,

-coupling means (20) for fastening the carrier structure (12) on the spotlight (10), and

-at least one threaded spindle (28) having a first threaded spindle end (28a), bearing axially fixedly and anti-rotatably on the optical component carrier (14) and connected to the coupling device (20) by means of a threaded bushing (30) corresponding to the threaded spindle (28), wherein the threaded bushing (30) is connected axially fixedly and rotatably to the coupling device (20),

-wherein the threaded spindle (28) extends substantially parallel to the optical axis (24) of the adjustable carrier structure (12), and the spacing between the first threaded spindle end (28a) and the coupling device (20) can be set by rotating the threaded bushing (30).

2. The carrier structure (12) according to claim 1, wherein the optical component (16) comprises a lens (16 a).

3. The carrier structure (12) according to claim 1 or 2, further comprising at least one guide rod extending along a guide axis (24), the guide rod comprising a guide rod end, wherein the guide rod end is axially fixedly supported on the optical component carrier (14) and axially movably supported in a guide opening connected with the coupling device (20), or wherein the guide rod end is axially fixedly supported on the coupling device (20) and axially movably supported in a guide opening connected with the optical component carrier (14).

4. The carrier structure (12) according to at least one of the preceding claims, wherein a guide element (44) is assigned to each threaded spindle (28) and/or each guide rod, which guide element is connected to the coupling device (20) and serves to guide the respectively assigned threaded spindle (28) or the respectively assigned guide rod in a region spaced apart from the coupling device (20) in the direction of the optical axis (24).

5. The carrier structure (12) according to at least one of the preceding claims, further comprising a plurality of threaded spindles (28) spaced apart from one another in a direction transverse to the optical axis (24), wherein each of the threaded spindles (28) has a first threaded spindle end (28a) which is supported axially fixedly and rotationally fixedly on the optic component carrier (14) and each of the threaded spindles (28) is connected to the coupling device (20) by means of an assigned threaded bushing (30) corresponding to the respective threaded spindle (28), wherein each of the threaded bushings (30) is connected axially fixedly and rotationally to the coupling device (20) and all threaded spindles (28) extend substantially parallel to the optical axis (24).

6. The carrier structure (12) according to claim 5, characterized in that all threaded bushings (30) are rotationally coupled by means of a traction means (38).

7. The carrier structure (12) according to claim 6, characterized in that all the threaded bushings (30) have a toothing (42) on their outer circumference and the traction means (38) is a rack belt.

8. The carrier structure (12) according to at least one of the preceding claims, characterized in that one or more of the threaded bushings (30) are coupled with the respectively assigned drive component (32) in such a way that the threaded bushing (30) can be rotationally driven relative to the assigned threaded spindle (28).

9. The carrier structure (12) according to claim 8, characterized in that one or more of the threaded bushings (30) coupled with one of the drive components (32) are connected anti-rotatably with a gear wheel (36) which cooperates with the drive component (32).

10. The carrier structure (12) according to claim 8 or 9, wherein the drive member (32) comprises an electric motor or a manually operable knob (32 a).

11. The carrier structure (12) according to at least one of the preceding claims, wherein a corrugation (46) extends along the optical axis (24) between the coupling device (20) and the optical component carrier (14), wherein the corrugation (46) is fastened in a radial edge region relative to the optical axis (24) on the coupling device (20) and on the optical component carrier (14).

12. An adjustable carrier structure (12) for a spotlight (10), in particular for setting the light radiation angle of the spotlight (10), comprising:

-an optical component carrier (14) on which an optical component (16) for receiving light emitted by the spotlight (10) can be fastened;

-coupling means (20) for fastening the carrier structure (12) on the spotlight (10); and

-an adjustment device (26) formed for adjusting the spacing between the coupling device (20) and the optical component carrier (14) along the optical axis (24) of the spotlight (24).

13. Spotlight (10) with an adjustable carrier structure (12) according to at least one of the preceding claims.

14. The spotlight (10) according to claim 13, wherein the coupling position of the adjustable carrier structure (12) is arranged on the light exit side of the spotlight (10).

15. The spotlight (10) according to claim 13 or 14, wherein the threaded spindles (28) and/or the ends (28b) of the guide rods facing away from the optical component carrier (14) are arranged radially outside the spotlight (10) with respect to the optical axis (24).

Technical Field

The invention relates to an embodiment of an adjustable carrier structure for spotlights. The invention also relates to a spotlight for illuminating a movie, studio, stage, event and/or theatre environment. In particular, the adjustable carrier structure is designed for setting the light radiation angle of the spotlight.

Background

In order to illuminate a movie, a studio, a stage, an event and/or a theatre environment, spot lights are often used. It is sometimes desirable to be able to use a single spotlight for different types of lighting. In this connection, the spotlight can be set, for example, in such a way that the light rays point in a point-like manner on a circular or elliptical surface. In this arrangement, the transition between the illuminated face and the face surrounding it can be clearly seen. Alternatively, the spotlight can also be set: a relatively large area is illuminated and the light field is output softly into the environment.

For this purpose, it is known to equip the spotlight with a (stepped) lens which can be displaced along the optical axis relative to the light source of the spotlight. A large adjustment range of the spotlight means here a large adjustment path of the lens along the optical axis. This results in such spotlights having a large structural length along the optical axis. Therefore, the spotlight housing (also referred to as a lens barrel) is relatively large. The spotlight housing must in particular be as long as the focusing path requires and must have a diameter which allows accommodating the (stepped) lens in the spotlight housing. Furthermore, the lighting device and its mounting must be able to be accommodated in the spotlight housing. Furthermore, the light field radiated in a setting in which the lens is located relatively close to the light source, i.e. relatively deep in the spotlight housing, is cut off by the spotlight housing. In this respect, it is also referred to as vignetting. In order to avoid this, the spotlight housing must have a particularly large diameter with respect to the optical axis, as a result of which the installation space requirement of such spotlights can be increased further. However, a spotlight which is as compactly constructed as possible is generally desirable.

Furthermore, spotlights with (stepped) lenses are known, wherein the (stepped) lens is fixedly mounted on the front side of the same spotlight and the light source and, if necessary, other elements inside the spotlight, such as reflectors, electrical lines, heat sinks, fans, etc., are moved relative to the lens. This form of construction is generally widespread, but is generally considered less suitable for spotlights having a light source comprising LEDs (LED light engine). The reason is that in LED spotlights, high-power cooling systems for the LED light engine are generally used, which are costly to adjust with respect to the (stepped) lens.

Therefore, there is a target conflict between the compact design of the spotlight and the large setting range of the light field radiated by the spotlight.

The object of the invention is therefore to solve or at least reduce this conflict of objectives and to provide a spotlight in which a large setting range is combined with a compact design.

Disclosure of Invention

According to one embodiment, this object is achieved by an adjustable carrier structure for spotlights according to the invention. The carrier structure comprises: an optical component carrier on which an optical component can be fastened; coupling means for fastening the carrier structure to the spotlight; and at least one threaded spindle having a first threaded spindle end which is supported axially fixedly and rotation-proof on the optical component carrier and is connected to the coupling device by means of a threaded bushing corresponding to the threaded spindle, wherein the threaded bushing is connected axially fixedly and rotatably to the coupling device, wherein the threaded spindle extends substantially parallel to the optical axis of the adjustable carrier structure and the spacing between the first threaded spindle end and the coupling device can be set by rotating the threaded bushing. In this connection, optical components are understood to include, for example, aperture plates, polarizing filters and colored or protective glasses in addition to lenses. Furthermore, the invention is not limited to spotlights, and the adjustable carrier structure can therefore also be fastened to other optical components.

Of course, an adjustment mechanism comprising a threaded spindle and a threaded bushing may be used to set the spacing between the first threaded spindle end and the coupling device, and vice versa in a kinematic sense. The threaded bushing is then connected with the optical component carrier, not with the coupling device.

According to another embodiment, this object is achieved by an adjustable carrier structure for a spotlight, in particular for setting the light radiation angle of a spotlight, comprising: an optical component carrier on which an optical component for receiving light emitted by a spotlight can be fastened; a coupling device for fastening the carrier structure on the spotlight; and an adjustment device formed for adjusting a spacing between the coupling device and the optical component carrier along an optical axis of the spotlight. In this embodiment, the adjustment means may comprise a threaded spindle and/or a rack. It is also conceivable to embody the adjusting device as a hydraulic or pneumatic adjusting device.

Furthermore, the object is achieved by a spotlight with an adjustable carrier structure of the type described above.

Drawings

The components shown in the figures are not necessarily to scale; emphasis instead being placed upon illustrating the principles of the invention. Further, the same reference numerals in the drawings denote components corresponding to each other. In the drawings:

fig. 1 schematically and by way of example shows a spotlight according to the invention with an adjustable carrier structure according to the invention according to one or more embodiments;

fig. 2 shows schematically and by way of example the carrier structure of fig. 1 in a state of release from the spotlight, wherein the viewing angle is opposite to that of fig. 1;

fig. 3 schematically and by way of example shows another spotlight according to the invention with an adjustable carrier structure according to one or more embodiments.

Detailed Description

The following detailed description refers to the accompanying drawings, which are related thereto and in which are shown by way of illustration specific embodiments in which the invention may be practiced.

Fig. 1 shows a spotlight 10, which is equipped with an adjustable carrier structure 12.

The adjustable carrier structure 12 is designed for setting the light radiation angle of the spotlight 10 and for this purpose comprises an optical component carrier 14, on which an optical component 16 for receiving the light emitted by the spotlight 10 is fastened. For this purpose, a light exit opening 18 is provided.

In the example shown, the optical component 16 includes a lens 16 a. In this case, therefore, the optical component carrier 14 may also be referred to as a lens holder or lens carrier. Of course, in other embodiments, additional optical components 16 may also be secured at optical component carrier 14.

The carrier structure 12 is fastened to the spotlight 10, more precisely to a spotlight housing 22 (also referred to as a lens barrel), by means of a coupling device 20. Here, the attachment point of the carrier structure 12 on the spotlight 10 is arranged on the light exit side of the spotlight, here too, a light exit opening 18 is provided.

The carrier structure 12 can be screwed, clamped and/or hooked onto the spotlight 10 by means of the coupling device 20. Alternatively, other suitable fastening means are possible. The fastening of the carrier structure 12 to the spotlight 10 can be carried out with or without the aid of tools corresponding to the fastening means.

The spacing existing along the optical axis 24 between the coupling device 20 and the optical component carrier 14 can be set by means of an adjusting device 26. In this way, the spotlight 10 can be transferred, for example, from a spotlight setting to a floodlight setting and vice versa.

In the embodiment shown in the figures, the distance of the lens 16a from the lens-side end of the spotlight housing 22 is therefore set by the adjusting device 26.

To this end, the adjustment device 26 in the illustrated example includes four threaded shafts 28 each having a first threaded shaft end 28a and a second threaded shaft end 28b (see FIG. 2). In this case, the first threaded spindle end is supported on the optical component carrier in an axially fixed and rotationally fixed manner.

The connection of the threaded spindles 28 to the coupling device 20 takes place via respectively assigned threaded bushings 30 corresponding to the respective threaded spindles 28. These threaded bushings are axially fixedly and rotatably connected with the coupling device 20.

All of the threaded shafts 28 extend substantially parallel to the optical axis 24.

Thus, in addition to the connection of the carrier structure 12 to the spotlight housing 22, the coupling device 20 also serves to support and guide the threaded rod 28. Thus, the coupling device 20 may also be referred to as a floor.

In this embodiment, the spacing between the optical component carrier 14 (more precisely the first threaded spindle end 28a) and the coupling means 20 is now set by: the threaded bushing 30 is rotated relative to the coupling device 20.

For this purpose, one or more of the threaded bushings 30, preferably the only one of the threaded bushings 30, is coupled with the drive component 32 in such a way that the threaded bushings 30 can be driven in rotation relative to the assigned threaded spindle 28.

Here, the drive part 32 comprises a rotary knob 32a which can be rotated by hand about a rotary knob axis 34. Such a knob may also be referred to as a focus button.

In an alternative embodiment, two focusing knobs can also be provided, which are arranged on opposite sides of the carrier structure 12.

In alternative embodiments, the drive member 32 may alternatively or additionally include an electric motor. Hydraulic and/or pneumatic drive means are also conceivable. Furthermore, the drive member may be arranged at any position of the carrier structure 12.

In the embodiment shown, the threaded bushing 30 coupled to the drive part 32 is connected in a rotationally fixed manner to a gear wheel 36 which cooperates with the drive part 32. For this purpose, the drive part 32 has a toothed section 32a, which is in engagement with a gear wheel 36.

The toothed segment 32a and the gear 36 thus form a gear mechanism, which can be embodied as a spur gear mechanism or as a bevel gear mechanism.

In the embodiment shown, the second threaded spindle end 28b is arranged radially outside the spotlight with respect to the optical axis 24. These second threaded spindle ends are therefore always moved outside the spotlight housing when the distance between the optical component carrier 14 and the coupling device 20 or the spotlight housing 22 is adjusted.

For this purpose, groove-like recesses or openings, in particular holes, are provided in the spotlight housing 22, in which holes the second threaded shaft end 28b can be moved along the optical axis 24 during adjustment.

In order to be able to position the optical component carrier 14 reliably and accurately, all the threaded bushings 30 are rotationally coupled to one another by means of a traction means 38, here a toothed strip 40.

The toothed strip 40 engages with its teeth in a toothed segment 42 correspondingly provided on the outer circumference of the threaded bushing 30.

Thus, all the threaded bushings 30 are driven in rotation by the drive member 32 via the toothed belt 42. Instead of the rack belt 42, a wedge belt, chain or other suitable traction means may also be used.

Instead of coupling all the threaded bushings 30 by means of a single rack belt 42, it is of course also possible to couple the threaded bushings 30 to the rack belt in pairs or groups. In this case, a plurality of toothed belts may be required in order to rotationally drive all the threaded bushings 30.

In addition to the threaded spindle 28, one or more guide rods extending along the optical axis 24 (then indicated as guide axis) may be provided, which guide rod or rods comprise a guide rod end which is/are axially fixedly supported on the optical component carrier 14 and axially movably supported in a guide opening connected with the coupling device 20. The opposite in kinematic sense is likewise conceivable. The guide rod ends are then supported axially fixedly on the coupling device 20 and axially movably in the guide openings connected to the optical component carrier 14.

It is also possible to replace several of the threaded spindles 28 with such guiding rods. The guide rods are not threaded here and serve merely to stably guide the optical component carrier 14 along the optical axis 24. These guide rods thus make it possible for the optical component carrier 14 to move along the optical axis 24. Movement transverse to the optical axis 24 is inhibited by the guide rods.

Additionally, one or more of the threaded shafts 28 and/or one or more of the guide rods may be assigned a guide element 44. Such a guide element 44 is connected to the coupling device 20 and serves to guide the respectively associated threaded spindle 28 or respectively associated guide rod in the direction of the optical axis 24 in a region spaced apart from the coupling device.

Furthermore, the guide elements 44 serve to hold the respectively assigned threaded bushing 30 on the coupling device 20 along the optical axis 24. The guide element 44 thus ensures: although the threaded bushing 30 rotates relative to the coupling device 20, it may not move along the optical axis 24.

In an alternative embodiment to this, the threaded bushing 30 can also be held on the coupling device 20 by a groove provided on the threaded bushing 30 and a fixing washer engaging into the groove.

Of course, embodiments are also contemplated in which more or fewer threaded shafts 28 and/or guide rods are used. However, at least one threaded spindle 28 is provided in accordance with the present invention. Furthermore, the carrier structure 12 preferably comprises at least one guide bar on which the optical component carrier 14 slides along the optical axis 24.

Instead of guide rods, guide rails or plates can also be provided on which the optical component carrier 14 slides along the optical axis 24.

In the illustrated embodiment, the adjustment device 26 includes four threaded shafts 28. Alternative embodiments are also conceivable in which one or more racks are provided instead of the threaded spindle 28. The adjustment means may also comprise one or more hydraulic or pneumatic cylinders.

As can be seen in fig. 3, the carrier structure 12 may comprise folds 46 which extend along the optical axis 24 between the coupling device 20 and the optical component carrier 14. The purpose of the fold 46 is to prevent light radiation transverse to the optical axis 24 in the region between the coupling device 20 and the optical component carrier 14.

The fold 46 is fastened here on the coupling device 20 and on the optical component carrier 14 in a radial edge region with respect to the optical axis 24. It is pointed out here that the coupling device 20 is covered by a housing in the embodiment shown in fig. 3. The housing may, for example, enclose at least the components 20, 30 and 40 and, for example, protect them from the environment.

In a further embodiment, the optical component carrier 14 can be designed in addition to this for accommodating further spotlight components. In particular, the optical component carrier 14 can have fastening means by means of which the flap door can be fastened to the optical component carrier 14.