EP3073178A1 - Lamp and lamp system - Google Patents

Abstract

The present invention relates to a luminaire (10), in particular radiator, with an optical axis (11) which essentially corresponds to a main emission direction of the luminaire (10), the luminaire (10) comprising: a first axis of rotation (12) and a second axis The axis of rotation (13), via which the optical axis (11) can be aligned, wherein the first axis of rotation (12) perpendicular to a first plane (14) and the second axis of rotation (13) perpendicular to a second plane (15). The optical axis (11) is perpendicular to a third plane (18). The first plane (14) is tilted to the second plane (15) by a first angle ². The third plane (18) is tilted to the second plane (15) by a second angle ±. The invention further relates to a lighting system comprising a lamp according to the invention and a light source.

Description

The invention relates to a luminaire having a first and a second axis of rotation, via which an optical axis of the luminaire can be aligned. The invention further relates to a lighting system with a luminaire and light source (s) according to the invention.

Radiators are known from the prior art, which are usually arranged on a support element via a vertically oriented arm. This arm defines a first vertical axis of rotation about which the radiator head can be rotated. Furthermore, the radiator head is usually connected to the arm via a joint, so that a second, horizontal axis of rotation is formed, as a result of which overall alignment of the radiator head and thus alignment of the optical axis for the light emission can be achieved. However, if now the light output to be changed, it means that the lamp head has to be greatly influenced in terms of its orientation and appearance. With several luminaires located on a ceiling, this sometimes results in a very restless ceiling appearance.

Starting from the known prior art, it is now an object of the present invention to optimize the alignment of the lamp, preferably such that as few lighting elements change by the orientation in their appearance and that the ceiling image acts as uniform as possible.

This object is solved by the subject matter of the independent claims. The dependent claims further form the central idea of the invention in a particularly advantageous manner.

To achieve this object, according to a first aspect of the invention, a luminaire, in particular radiator, for example, surface-mounted or recessed spotlights, which has an optical axis which preferably corresponds essentially to a main emission direction of the luminaire. The luminaire is preferably used to illuminate objects, rooms, buildings, facades, streets, sports facilities, leisure facilities and the like and is therefore preferably designed as a spotlight or "downlight". The luminaire further has a first axis of rotation and a second axis of rotation, via which the optical axis can be aligned. The first The axis of rotation is perpendicular to a first plane and the second axis of rotation perpendicular to a second plane. The luminaire according to the invention is now characterized in that the optical axis is perpendicular to a third plane, and that the first plane is tilted to the second plane by a first angle and the third plane is tilted to the second plane by a second angle. It is thus possible that by rotation of or around the first and second rotation axis a certain (large) solid angle range can be covered by the optical axis, which (for example, at an angular range of the respective axes of rotation (in particular the first axis of rotation) of 360 ° ) preferably corresponds to a substantially annular to circular solid angle range. The solid angle range preferably results from the sum of the points of intersection of the optical axis with an imaginary plane or surface. Consequently, within a certain solid angle range, which depends on how the two angles are chosen, an adjustment of the light output can be made. The angular ranges of the respective axes of rotation are preferably at least 360 °, wherein smaller angular ranges are conceivable. Then arises - especially at an angular range of the first axis of rotation of <360 ° - a non-closed rotationally symmetric or even an asymmetric solid angle range.

Due to the fact that, in the luminaire according to the invention, the second plane with the vertical second rotation axis located thereon is tilted at a first angle to the first plane with the vertical first axis of rotation thereon and also tilts the third plane with its optical axis to the second plane by a second angle is, can be covered by simply rotating about the or two axes of rotation about their axes, a large solid angle range, but without affecting the orientation and the appearance of the entire light in a large way. A pivotable radiation head, as known from the prior art, can thus be omitted, while the orientation and orientation of the light emission or a light emission surface can be changed.

In a preferred embodiment, the first angle may be in a range between 5 ° and 85 °. In a further preferred embodiment of the luminaire, the second angle lies in a range between 0 ° and 90 °. In a further embodiment, the first angle corresponds to the second angle and is moreover preferably 45 °. As a result, a particularly large solid angle range can be covered in an efficient manner.

In addition, in a preferred embodiment, the first angle and the second angle may, for example, be arbitrarily adjustable or varied by a user, which simplifies the handling and setting possibilities of the optical axis.

The luminaire may further comprise a plurality of (at least two) housing parts. These are preferably each associated with one of the axes of rotation, so that the first axis of rotation and the second axis of rotation each form axes of these housing parts. In this case, preferably at least one housing part can be rotationally symmetrical. Most preferably, the housing parts have a cylindrical and / or spherical shape. The inventive arrangement of the axes to each other and the symmetrical shape of the housing parts, the lamp can be further calmed, since a rotation of the axes of rotation only changes the perceived position and orientation of the light emitting surface, the appearance and orientation of the housing parts due to their symmetrical shape, however, always stay almost the same.

According to a further aspect of the invention, the housing part of the second axis of rotation may have a radiating surface. The optical axis preferably corresponds to the main emission direction of the emission surface, wherein preferably the plane of symmetry of the emission surface may correspond to the second plane. It is also conceivable that the emission surface has individual (ie several) optical regions which each have a main radiation direction which corresponds to an optical axis aligned according to the invention.

In a further preferred embodiment, the luminaire according to the invention has a luminaire cover for covering a luminous means to be provided in a housing part, preferably in the housing part of the second axis of rotation. Preferably, at least part of the luminaire cover forms the emission surface. Preferably, at least the radiating area of the luminaire cover comprising the radiating surface is formed of translucent, transparent or opaque material, such as, for example, plastic.

Optical elements and / or optical modules can be arranged in the housing part of the second axis of rotation such that they can form the emission surface and / or the main emission direction or the second angle between the third plane with its optical axis and the second plane. The optical elements and / or Optics modules preferably form the optical regions of the emission surface. Preferably, the optical elements and / or optical modules are designed such that they continue the surface of the housing part of the second axis of rotation closed, particularly preferably tilted to each other.

Thus, by such a configuration with similar optical elements and / or optical modules, the shape of the lamp by the uniform pattern of the optical elements are further calmed and also can be reduced by the use of common parts and / or modules manufacturing and assembly costs.

According to a second aspect, the invention relates to a luminaire system comprising a luminaire according to the invention and at least one luminous means.

The optical axis of the system can correspond to the main emission direction of the luminous means or in each case of the luminous means. Preferably, the luminous means comprises a light emitting diode or a light emitting diode module.

In the context of the invention, the "optical axis" is understood to mean, in particular, the main emission direction of the luminaire (for example, conditioned or influenced by the luminaire cover and / or optical elements and / or optical modules) and / or the illuminant (s), whereby also the main emission direction of a light source used in the luminaire is to be understood as the main emission direction of the luminaire. The main emission direction of the luminaire can also have a plurality of main emission directions (for example, conditioned or influenced by the luminaire cover and / or respective emission regions-that is to say, for example, optical regions of a emission surface-optical elements and / or optics modules assigned to main emission directions) taken alone or else averaged (for example, graphically / mathematically summarized) as Hauptabstrahlrichtung the luminaire in the context of the invention are to be understood. The luminaire may have one or more "optical axes". An "optical axis" can result from the (symmetrical or spatial) center point / value of a plurality of optical axes (for example of illuminants and / or optical elements and / or optical modules), as well as for the main emission direction (s) of the luminaire applies. The "optical axis (s)" may intersect the second axis of rotation in a point lying in the second plane. However, a point of intersection lying outside the second plane or even no intersection of these two axes is conceivable.

Within the scope of the invention, the term "solid angle region" is understood to mean that (two-dimensional) region which images / covers all regions of the optical axis, preferably on an imaginary plane, taking into account all degrees of freedom given by the two rotation axes. ie the sum of all points of intersection of the optical axis with the imaginary plane (or area) forms. Particularly in the case of an angular range of the first axis of rotation of .gtoreq.360.degree., Preferably rotationally symmetrical images of the solid angle range are obtained.

Figur 1

eine schematische Darstellung der erfindungsgemäßen Leuchte gemäß einem ersten Ausführungsbeispiels,

Figur 2

den Raumwinkelbereich der erfindungsgemäßen Leuchte gemäß einer ersten Ausführungsform,

Figur 3

den Raumwinkelbereich der erfindungsgemäßen Leuchte in einer vorteilhaften Konfiguration der Winkel gemäß einer zweiten Ausführungsform

Figur 4

eine perspektivische Darstellung einer erfindungsgemäßen Leuchte gemäß einem zweiten Ausführungsbeispiels,

Figur 5

eine perspektivische Darstellung einer erfindungsgemäßen Leuchte gemäß einem dritten Ausführungsbeispiels, und

Figur 6

eine Detailansicht des Gehäuseteils der zweiten Drehachse der Leuchte gemäß Figur 4.

Some embodiments of the invention will be explained in more detail with reference to the accompanying drawings. Like reference numerals are used for the same features. Show:

FIG. 1

a schematic representation of the lamp according to the invention according to a first embodiment,

FIG. 2

the solid angle range of the lamp according to the invention according to a first embodiment,

FIG. 3

the solid angle range of the lamp according to the invention in an advantageous configuration of the angle according to a second embodiment

FIG. 4

a perspective view of a lamp according to the invention according to a second embodiment,

FIG. 5

a perspective view of a lamp according to the invention according to a third embodiment, and

FIG. 6

a detailed view of the housing part of the second axis of rotation of the lamp according to FIG. 4 ,

FIG. 1 shows the basic principle of a lamp 10 according to the invention according to a first embodiment of the invention. The luminaire 10 has at least a first axis of rotation 12 and a second axis of rotation 13, via which an optical axis 11 can be aligned. The first axis of rotation 12 is perpendicular to a first plane 14. The first level 14 may represent any installation position of the lamp 10 or in any other relation to a mounting position of the lamp 10, which is preferably a ceiling or wall. Next, the second axis of rotation 13 is perpendicular to a second plane 15. The second level 15 may represent any level, as long as it is perpendicular to the second axis of rotation 13. The first plane 15 is tilted to the second plane 14 by a first angle β. The tilting of the angle β is preferably dimensioned such that the first plane 15 is not perpendicular to the first plane 14. In the installation position of the luminaire 10 can thus consciously by the tilting of the second plane 15 by the angle β (for example, a vertical) axis of rotation through the first axis of rotation 12 and a non-coaxial or parallel (eg., Non-horizontal) axis of rotation through the second axis of rotation 13 are generated.

The optical axis 11 preferably corresponds to the main beam direction of the lamp 10, but may also coincide with the axis of symmetry of a light cone or a collimated light beam or be in other respects with the radiated light. To describe the angular relationship between the optical axis 11 and the axes of rotation 12 and 13, a third plane 18 is defined on which the optical axis 11 is perpendicular. The third plane 18 with its optical axis 11 is now tilted to the second plane 15 by a second angle α.

$${\epsilon }_2=\beta -\alpha$$

About the solid angle range of the area (eg, a space) is described, the lamp 10 can cover with its optical axis 11 when using all given by the axes of rotation 12, 13 degrees of freedom or illuminate. Now, if the third plane 18 is tilted with its optical axis 11 to the second plane 15 by an angle α, by rotation of the optical axis 11 about the second axis of rotation 13, a closed line (here: circular) area covered by the optical axis 11 or . illuminated. If, in addition, the second axis of rotation 13 is also rotated about the first axis of rotation 12, a planar area (here: ring) is covered when the two rotational movements are superimposed by the optical axis 11. By simultaneously rotating the two axes of rotation 12 and 13 thus results in a solid angle range of the lamp 10 according to the invention, which generally in the FIG. 2 corresponds to the illustrated annular solid angle range. This requires that at least the first axis of rotation 12 - and preferably also the second axis of rotation 13 - covers an angular range of at least 360 °, which according to the invention also angle ranges of <360 ° (and> 0 °) for the respective axes of rotation 12, 13 are conceivable , The limits ε ₁ and ε _{2 of} this range 20 for the illustrated embodiment result from the addition of the angle β and the angle α for the maximum value ε ₁ and from subtraction of the angle α from the angle β for the minimum value ε ₂ . In general, the solid angle range at β ≠ α results from the following equations: $${\epsilon }_1=\beta +\alpha$$

$${\epsilon }_2=\beta -\alpha$$

The area 21 in FIG. 2 indicates the area which, according to this embodiment, can not be covered by the optical axis 11.

$${\epsilon }_2=0$$

FIG. 3 shows the solid angle range in an advantageous configuration of the angle β and α according to another embodiment. Corresponds, as shown here, thus the angle β to the angle α, so the area 21 can disappear and thus there is a circular solid angle area. With such a configuration, the amount of the lower limit value ε _{2 is} thus minimized and the solid angle range is increased efficiently. In such an advantageous configuration of the angles, the solid angle range at β = α is then given by the following equations: $${\epsilon }_1=2\alpha$$

$${\epsilon }_2=0$$

In the installation position of the luminaire 10 according to the invention, β and α can be produced at the same angles and by a favorable tilt of 45 ° already a large solid angle, e.g. half of a space to be covered by the optical axis 11. In particular, when using the lamp 10 to a ceiling would be covered with such a configuration of the angle β and α already a large area to be illuminated.

Depending on the application, the value of both angles β and α can be further varied by adjusting the angles β and α to the geometry of the room and / or to the position and / or orientation of the lamp 10 in the room. Thus, with increasing angles β and α, an increasing solid angle range can be covered. Thus, both angles β and α can assume any value between 0 ° and 90 °, preferably between 5 ° and 85 °, very particularly preferably between 45 ° and 85 °.

Both angles β and α can also be varied independently of each other depending on the application. Preferably, the angles β and α can be adjusted by the user or be varied, they must therefore not be "preset" by default in an angle.

FIGS. 4 and 5 show two further embodiments of the embodiment of a lamp 10 according to the invention, preferably for spotlights and most preferably for surface and recessed spotlights. The luminaire 10 may have a first housing part 30, a second housing part 31 and preferably a radiating surface 32 arranged in one of the housing parts 31. The radiating surface 32 may be part of a luminaire cover or designed as such. The first housing part 30 may have the first axis of rotation 12 and the housing part 31, the second axis of rotation 13; So be about the respective axis of rotation 12, 13 rotatable. Advantageously, the housing parts 30 and 31 have a symmetrical, preferably a rotationally symmetrical, very particularly preferably a cylindrical and / or spherical shape. The axes of rotation 12 and 13 may coincide with the axes of symmetry of the housing parts 30 and 31, whereby upon rotation of the axes 12 and 13 results in a quiet and always the same appearance of the lamp 10. The tilting of the angle β can result from the arrangement of the housing parts 30 and 31 to each other.

FIG. 4 shows an embodiment of a lamp 10, wherein the first housing part 30, the shape of a cylinder and the second housing part 31 may have the shape of a ball, preferably both axes of rotation 12 and 13 coincide with the respective axes of symmetry. The second housing part 31 may be arranged tilted in the first housing part 30 so that it is rotatable about the rotational axis 13 and tilted by the angle β. Further, the housing part 30 may be rotatably mounted about its axis of rotation 12, for example in a ceiling or wall 40.

FIG. 5 shows an embodiment of a lamp 10, in which the first housing part 30 may have the shape of an obliquely cut cylinder and the second housing part 31 in the form of a flat disc, wherein also preferably both axes of rotation 12 and 13 coincide with the respective axes of symmetry. The second housing part 31 may be arranged in the obliquely cut-off region of the cylinder of the housing part 30, so that it is tilted by the obliquely cut region by the angle β and is also rotatable about the rotation axis 13. Further, the housing part 30 may be rotatably mounted about its axis of rotation 12, for example in a ceiling or wall 40. The plane of symmetry of the radiating surface 32 may correspond to the second plane 15.

To form the main emission direction or the optical axis 11 defined by the main emission direction, optical elements and / or optical modules 33 (for example of the same type) can be arranged in the emission surface 32 arranged in the second housing part 31; eg as (part of) the luminaire cover.

Indicates the radiating surface 32 as in Figs FIGS. 4 and 6 shown, a curved shape, it can be continued closed by tilting the optical elements and / or optical modules 33, the curved shape. The optical elements and / or optical modules 33 may have a hexagonal shape and be tilted to each other, for example, to continue closed a spherical shape of the housing part 31, whereby a football-like appearance of the housing part 31 is formed. The main emission direction or the optical axis 11 then results from the emission directions of the individual tilted optical elements and / or optical modules 33. The optical elements and / or optical modules 33 are preferably designed to compensate for their tilt such that in the installed or tilted state of the optical elements and / or optical modules 33 are directed their respective emission directions in the same direction to form the main emission direction and the optical axis 11 and the angle α. Alternatively, the respective emission directions of the optical elements and / or optical modules 33 in the installed or tilted state can also point in different directions, whereby the main emission direction or the optical axis 11 and the angle α then result from the individual emission directions of the optical elements and / or Optics modules 33 results.

As in FIG. 5 The optical elements and / or optical modules 33 can also be arranged parallel to one another in a flat plane in order to form the emission surface with its main emission direction or optical axis 11. The emission directions of the optical elements and / or optical modules 33 can then all point in the same direction relative to their optical element and / or optical module (ie are preferably aligned parallel to one another) to form the main emission direction or the common optical axis 11. Thus, it can be used for the optical elements and / or optical modules 33 common parts.

The in the FIGS. 4 to 6 mentioned optical elements and / or optical modules 33 may also have any other geometric shape. Preferably, they are thereby formed such that they can continue closed a curved surface and / or flat surface.

While, according to the figures, the optical axis 11 and the second axis of rotation 13 intersect in the second plane 15, the invention is not limited thereto.

The invention further relates to a lighting system, which has a lighting means 34. In order to form the main emission direction or the optical axis 11, the light source 34 (not shown) may be arranged and / or designed in one of the housing parts 30 or 31 in such a way that the main emission direction or the optical axis is solely due to its arrangement and / or shape 11 and thus forms the second angle α. The optical elements and / or optical modules 33 can then be completely eliminated and replaced by another arranged in the radiating 32 luminaire cover. The luminaire cover or at least the radiating area of the luminaire cover which surrounds the radiating surface 32 can be formed from translucent, transparent or opaque material, such as, for example, plastic.

Furthermore, it can likewise be provided that the main emission direction or the optical axis 11 and the second angle α are formed both by the arrangement and / or shape of the luminous means 34 and by the optical elements and / or optical modules 33.

The light 10 or the light system can also be used in combination with a busbar.

According to the invention, it is also conceivable that the lamp 10 has a plurality of optical axes 11; for example, in the presence of a plurality of light sources each with its own main emission direction or, in general, by individual optical regions of the emission surface 32, e.g. may each be formed by one of the optical elements and / or optical modules. In this case, at least one of the optical axes 11 or the resultant of several or all optical axes 11 should be present according to the invention.

The invention is not limited to the above-described embodiments as long as it is encompassed by the subject matter of the following claims. So can the Luminaire 10 be made of any material, as long as it is suitable for the application. Furthermore, the number of housing parts 30, 31 and their dimensions, shapes and precise embodiments is not limited by the invention, wherein the lamp 10 preferably maintains a similar appearance in their orientation. Likewise, the number of axes of rotation 12, 13, optical axes 11 and Hauptabstrahlrichtungen is not limited, as long as the lamp 10 can cover by their Ausrichtungsmöglichkeiten a certain solid angle range.

Claims (15)

Luminaire (10), in particular radiator, with an optical axis (11) which essentially corresponds to a main emission direction of the luminaire (10), the luminaire (10) comprising: a first axis of rotation (12) and a second axis of rotation (13), via which the optical axis (11) can be aligned, wherein the first axis of rotation (12) is perpendicular to a first plane (14) and the second axis of rotation (13) is perpendicular to a second plane (15),
characterized in that
the optical axis (11) is perpendicular to a third plane (18),
wherein the first plane (14) is tilted to the second plane (15) by a first angle β, and wherein the third plane (18) is tilted to the second plane (15) by a second angle α. Luminaire (10) according to claim 1, characterized in that : by rotation of the first and second rotation axis (12, 13) a certain solid angle range is covered by the optical axis (11) resulting from the sum of the intersections of the optical axis (11) with an imaginary plane, the solid angle range preferably annular to circular. Luminaire (10) according to claim 1 or 2, characterized in that : the angular range of the first and / or second axis of rotation (12, 13) is at least 360 °. Luminaire (10) according to one of the preceding claims, characterized in that : the first angle β is in a range between 5 ° and 85 °. Luminaire (10) according to one of the preceding claims, characterized in that : the second angle α is in a range between 0 ° and 90 °. Luminaire (10) according to one of the preceding claims, characterized in that : the first angle β corresponds to the second angle α, preferably the first angle β and the second angle α are both 45 °. Luminaire (10) according to one of the preceding claims, characterized in that : the first angle (β) and the second angle (α) are adjustable. Luminaire (10) according to one of the preceding claims, characterized in that : the first axis of rotation (12) and the second axis of rotation (13) are axes of housing parts (30, 31), wherein preferably at least one of the housing parts (30, 31) is rotationally symmetrical, particularly preferably the housing parts (30, 31) of the first and second rotation axis (12, 13) have a cylindrical and / or spherical shape. Luminaire (10) according to claim 8, characterized in that : the housing part (31) of the second axis of rotation (13) has a radiating surface (32). Luminaire (10) according to claim 9, characterized in that : the optical axis (11) corresponds to the main emission direction of the emission surface (32) or individual optical regions of the emission surface (32), wherein preferably the plane of symmetry of the emission surface (32) or the respective individual optical regions thereof corresponds to the second plane (15). Lamp (10) according to one of claims 9 to 10, characterized in that: Optics elements and / or optical modules (33) in the housing part of the second axis of rotation (31) are arranged to form the radiating surface (32) and / or the second angle α between the third plane (18) and second plane (15), wherein the optical elements and / or optical modules (33) preferably form the optical regions of the emission surface (32), wherein the optical elements and / or optical modules (33) are preferably designed such that the surface of the housing part of the second axis of rotation to continue closed, particularly preferably tilted to each other. Luminaire (10) according to one of the preceding claims, characterized in that : a luminaire cover is provided for covering a luminous means to be provided in one of the housing parts (31), wherein preferably at least part of the luminaire cover forms the radiating surface (32), and furthermore preferably at least the radiating area of the luminaire cover made of translucent, transparent or radiating surface (32) opaque material, such as plastic, is formed. Lighting system comprising a luminaire according to one of the preceding claims and a lighting means. Lighting system according to claim 13, wherein the optical axis (11) corresponds to the main emission direction of the luminous means. Lighting system according to claim 13 or 14, characterized in that : the luminous means comprises a light emitting diode or a light emitting diode module.

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