EP3555521B1 - Lamp - Google Patents

Description

The invention relates to a lamp, comprising a lamp base, a lamp head and a lamp column extending between the lamp base and the lamp head, the lamp head having first lighting means which are arranged in a common plane and which are designed to couple out a first, indirect light component , and wherein the lamp head further comprises a glare control arrangement.

The terms "indirect light component" and "direct light component" are to be understood in the sense of the present invention as follows: a direct light component is a light component whose light is directed directly onto a room area to be illuminated, for example a workstation. An indirect light component, on the other hand, illuminates the room indirectly, i.e. through reflection of the light, for example on the walls or ceilings of a room. In a room, for example, the light is emitted upwards in the direction of the ceiling of the room and / or laterally on the walls of the room and is reflected from there into the room, in particular onto a workplace.

To illuminate offices and open-plan offices, a combination of ceiling-mounted lamps or floor lamps and individual table lamps is often used. The ceiling-bound lamps or floor lamps are used for general illumination of the room, while the table lamps provide sufficient selective illumination of the individual workstation. The number of different light horizons created by the different levels of radiation of the individual lights is often perceived as a disadvantage. Another disadvantage is the lack of flexibility in static ceiling lights.

Workplaces are often used very flexibly and dynamically, especially in modern office structures. Working groups of different sizes can be found at large tables or workbenches, or small, modular table systems can be grouped into different work zones, depending on requirements. In this case, ceiling-mounted or wall-mounted lights do not allow adaptation to the changing workplace situation due to their permanent installation. Conventional desk lights can be individually positioned, but only serve to illuminate the individual workstation and not to illuminate the room. Floor lamps, on the other hand, which can be designed as ceiling washlights for indirect room lighting, are usually difficult to position in different places due to their size and the associated weight and have to be combined with individual work table lamps, which again means several different light horizons be perceived. A generic lamp is from the DE 10 2014 000 558 B3 , the EP 2392854 A2 and the DE 10 2009 017 163 B3 known.

The object of the present invention is therefore to provide a lamp, in particular a table lamp, which is suitable for coupling out an indirect light component for illuminating the workplace, which is extremely mobile and flexible to use at the same time, and which can be easily accessed by a user without great effort Location can be positioned, whereby the luminaire continues to meet the requirements of an upscale, graceful design.
This object is achieved by a light with the features of claim 1.
Specific exemplary embodiments and developments of the invention are the subject of the dependent claims.

According to claim 1, the invention relates to a lamp, comprising a lamp base, a lamp head and a lamp column extending between the lamp base and the lamp head, the lamp head having first lamps that are in a common plane E are arranged and which are designed to couple out a first, indirect light component, and wherein the lamp head furthermore has a glare-free arrangement which is arranged parallel to the plane E and comprises a light-directing film and shielding elements, the shielding elements being arranged in such a way that a Emission angle of the indirect light component after passing through the glare control arrangement is limited to 30 ° with respect to a vertical V to the plane E, and the glare control arrangement in the direction of the vertical V has a maximum height of 2.0 cm.

In other words, the lamp according to the invention is characterized by a special, extremely flat anti-glare arrangement through which the light emitted by the first illuminants passes and through which the emission angle of the indirect light component is limited to 30 ° with respect to a vertical to plane E. If plane E is aligned parallel to the ceiling of a room, the indirect light component is emitted upwards towards the ceiling and the beam angle is limited to 30 ° with respect to the vertical in the room. Such a narrow beam angle prevents the glare of standing people, even if the lamp according to the invention, for example as a table lamp, decouples the indirect light component below the eye level of a standing person.

The anti-glare arrangement comprises a light-directing film and shielding elements. A light-directing film is, for example, a micro-structured film which filters the light radiating through, with light rays passing through the film within an angle specified by the specific film structure, while light rays outside this angular range are reflected. These reflected light rays are also reflected by a housing of the lamp head and thus hit the film again. In this way, it is possible to influence the radiation angle efficiently.

After passing through the light-directing film, however, in addition to the portion of light emitted in a desired angular range, further portions of light emitted at very flat angles of approximately 70 ° with respect to the vertical V remain. In order to eliminate these flatly emitted light components, the anti-glare arrangement has shielding elements which are arranged below in the direction of the light exit of the film. The shielding elements are designed and arranged in such a way that they allow the light component emitted in the desired angular range to pass unhindered, while they mechanically shield the light components emitted at flat angles. The shielding elements can be designed, for example, as a grid arrangement, arranged on the film, of interconnected webs with a triangular cross section. Depending on the application, other cross-sectional shapes of the webs are also possible, for example an ellipsoidal or parabolic cross-sectional shape. The shielding elements can for example be made of plastic or metal and can stand up on the film as a grid arrangement and, if necessary, be connected to it, for example by gluing. The height of the shielding elements can be only a few mm, for example 5 to 7 mm, the specific height being dimensioned such that the light components emitted at flat angles are completely shielded.

The structure within the lamp head is thus given by several parallel levels. The first lighting means are arranged in a first plane E, for example on a common printed circuit board. At a small distance of about 0.5 to 4 mm, preferably of about 0.5 to 2 mm from the first lighting means, the light-directing film which covers the first lighting means is subsequently arranged parallel to the plane E in the direction of the light exit. Finally, the shielding elements are arranged in a further plane parallel to the plane E and subsequently to the film and the film. The shielding elements can be arranged directly on the film or at a short distance from it. The film is thus located between the first lighting means and the shielding elements. Light that is emitted by the first illuminants first passes through the film through and then passes the arrangement of the shielding elements. After passing through the anti-glare arrangement, the emission angle of the first, indirect light component is limited to 30 ° with respect to a vertical V to the plane E.

Due to the special anti-glare arrangement and the associated emission of the first indirect light component in a defined, narrow angular range, it is possible to position the lamp head much lower in the room than is the case with a conventional, upward-radiating floor lamp. In particular, the lamp head can be arranged at a height between approximately 1.20 m and 1.70 m above a floor or at a height between approximately 0.40 m and 1.00 m above a table top and thus at a height which is in the Generally below the eye level of a standing observer. The anti-glare arrangement according to the invention has the effect that a viewer is not dazzled despite the high light output of the lamp, which can be designed, for example, to illuminate a workplace in accordance with the DIN EN 12464/1 standard. In this way, it is possible to make the entire luminaire much smaller and more delicate than corresponding known luminaires used for room illumination, which have to decouple the light above the head or eye level of a viewer due to missing or insufficient glare control mechanisms. In particular, the lamp can be designed as a table lamp radiating upwards with dimensions similar to those of a conventional desk lamp. Based on an approximately cuboid shape, the lamp head can for example have a length between approximately 20 cm and 40 cm, preferably a length of approximately 32 cm, and a width between approximately 20 cm and 30 cm, preferably a width of approximately 24 cm. Such a small lamp is extremely mobile and can be brought into various positions in the room without great effort.

At the same time, the anti-glare arrangement according to the invention is designed to be extremely flat, so that the lamp head of the lamp can also be made very flat and thus meet the requirements of a present day many times over the desired reduced design. It differs fundamentally from conventional lamp heads, as they are known, for example, from ceiling washlights, in which a shield is often shell-shaped and thus much more voluminous in order to achieve a corresponding glare control effect with the same light output. Known, flat ceiling washlights, on the other hand, only have inadequate glare control mechanisms and accordingly can only sensibly decouple the light above head level.

The lamp according to the invention thus enables a powerful, glare-free extraction of a strong, indirect light component below the eye level of a standing observer, whereby the first lighting means used can be suitable for generating an illuminance of approx. 300 lux at a workplace. The first lighting means can be LEDs, for example, which are arranged on a common, flat printed circuit board which defines the plane E.

A luminaire designed in this way can be adapted to a wide variety of office situations and, due to its small dimensions and the flat structure of the luminaire head, has an extremely aesthetic overall appearance that meets modern design requirements.

Of course, the lamp according to the invention can be used not only as an office lamp but also as a lamp, for example in a living room, bedroom or any other room, in particular also in a home office.

One embodiment of the invention provides that the emission angle of the indirect light component after passing through the glare control arrangement is limited to 22 ° with respect to a vertical V to the plane E. It can be provided that the emission angle of the indirect light component is limited to even smaller angles, for example 20 °, with respect to the vertical V after passing through the glare control arrangement.

Furthermore, it can be provided that the anti-glare arrangement has a maximum height of 0.8 cm or a maximum height of only 0.6 cm in the direction of the vertical V. This enables an even flatter design of the lamp head, which can in particular be designed in the shape of a cuboid.

According to a proposal of the invention, each first lamp is arranged in a mixing chamber. In the context of the invention, a mixing chamber is understood to mean an arrangement made of a highly reflective material, for example made of a highly reflective plastic, which in each case laterally surrounds one or more illuminants. Radiation emitted by the first illuminants, which does not hit the light-directing foil in the angular range given by the foil structure and therefore cannot pass through, is, as already explained above, reflected by the light-directing foil and now strikes the highly reflective material of the mixing chamber. Here the radiation is also reflected once or several times and finally hits the light-directing film again at a different angle, which it can now pass through, provided the radiation is now in the intended angular range. Otherwise, the radiation will continue to be reflected between the light-directing film and the mixing chamber until it finally hits the film in the intended angular range and can pass through it. The provision of a mixing chamber therefore means that hardly any radiation escapes to the sides due to reflection effects and is lost, which is associated with an increase in the efficiency of the luminaire.

According to one embodiment of the invention, the lamp head of the lamp has second lighting means for coupling out a second, direct light component. In other words, it can be provided that the lamp according to the invention not only has first lighting means for coupling out a first, indirect light component for room illumination, but also second lighting means through which a second, direct light component can be coupled out. The direct light component is generally used to illuminate an individual workplace. The first and second illuminants can be designed so that a total of one at the workplace Illuminance of about 500 lux is achieved. This is made up of the illuminance of about 300 lux in the room caused by the indirect light component and the additional illuminance at the workplace itself caused by the direct light component. In this way, the lamp according to the invention takes on both the task of room illumination and that of workplace illumination and combines So in one luminaire the properties of conventional, ceiling-bound luminaires or floor lamps as well as classic desk lamps. In terms of its manageability, the lamp is comparable to a classic desk lamp and can therefore be repositioned again and again without great effort.

Both the indirect light component and the direct light component are each decoupled from the luminaire head so that practically only one light horizon is perceived. A light horizon is understood to mean that plane from which a light component is coupled out. This distinguishes the lamp according to the invention from a system of ceiling-bound lamps or floor lamps and classic desk lamps, in which several decoupling levels are available to achieve sufficient room and workplace illumination and accordingly several, but at least two, light horizons that are usually clearly spaced from one another are perceived.

One embodiment of the invention provides that the second lighting means are arranged in a lamp holder which is received in a receptacle formed on the lamp head, the lamp holder being pivotable about two mutually perpendicular axes within the receptacle. In this way it is possible for a user to move the direct light component into a desired position and thus to achieve optimal illumination of the workplace.

According to an alternative embodiment, it can be provided that the second lighting means are arranged in a common plane D, the plane D being parallel to the plane E of the first lighting means. The direct one and the indirect light component is thus coupled out from two planes parallel to one another and arranged at a small distance from one another. It can also be provided that the direct light component coupled out by the second illuminant is emitted asymmetrically, with a maximum of the radiation in an angular range between 25 ° and 45 °, preferably in an angular range between 30 ° and 40 °, with respect to a perpendicular level D lies. In other words, the direct light component is in this case emitted as a wide beam, but asymmetrical distribution. The second lighting means can be arranged in a lamp holder, which can be rotated about an axis running perpendicular to the planes E and D. In this way, the maximum of the asymmetrical radiation can be directed to different places, for example on a desk, by simply rotating the lamp holder, without the lamp having to be moved as a whole and without the lamp holder having to be pivoted out of plane D. The lamp holder can be designed, for example, as a flat disk which is arranged on an underside of the lamp head.

In particular, it can be provided that the direct and indirect light components can be controlled independently of one another. In this way, only the indirect or only the direct light component can be extracted if the specific conditions make this necessary and the light is only to be used as a room light or only as a workplace light. In particular, both light components can be dimmable independently of one another and / or different light colors can be implemented. In addition, the color temperature can also be continuously adjustable, for example between a warm white color temperature in the range of around 3000 K and a cold white color temperature in the range of around 6000 K. In this way, it is particularly possible to adapt to changes in natural light during the day and season. Such an adjustment can be made by the user himself, but it can also be done automatically with the help of appropriate sensors. For this purpose, sensors can be provided that detect the current natural light conditions and, depending on the recorded values, send a corresponding signal to the lighting control output, which then adjusts the amount of light to be coupled out accordingly. A luminaire designed in this way adapts in an optimal way to the user's biorhythms given by the natural lighting conditions.

The control of the direct light component can be carried out wirelessly by the user, for example via a smartphone, a tablet computer or another suitable device for mobile communication using appropriate software. For this purpose, the lighting control can have a radio interface, for example a Bluetooth interface. The control can alternatively or additionally also take place via a suitable operating unit, for example a touch panel, on the lamp itself. Such a control unit can be integrated into the lamp base, for example.

According to a further embodiment of the invention, the luminaire can have user recognition, by means of which the direct light component can be automatically set as a function of the user. Thus, different light colors, light temperatures and / or dimming levels for the direct light component can be stored for each user, which are automatically set by the user recognition when the respective user is recognized. In particular, such data can also be stored as a function of the season and time of day, so that a direct light component adapted to the daytime and seasonal changes in natural light can be set automatically. In this way the lamp becomes a personalized lamp.

The indirect light component can also be adjusted by the individual user. According to one proposal of the invention, however, it is provided that the indirect light component is controlled centrally via a sensor system. This is based on the idea that the room lighting caused by the indirect light component should not be individually controllable by the individual user, but rather independently of the individually adjustable workplace lighting within a given room area and Time interval is to remain unchanged. The central control of the indirect light component can take place via the building services, for example. Here, too, the color temperature can be adjusted to the natural light depending on the time of day and the season, as already described above for the direct light component. Dimming and / or adjustment of the light color is also possible.

The lamp can be designed to be particularly energy-saving if the indirect light component is controlled with the help of presence and / or daylight sensors in such a way that the indirect light component is only decoupled when there are actually people in the room to be illuminated and the lamp is automatically switched off when these people leave the room. The illuminance of the indirect light component can also be adjusted up or down depending on the daylight intensity detected. Such a controllable indirect light component can be used to meet ecological building standards such as the LEED standard or the GreenBuilding program.

According to a proposal of the invention, the lamp is designed as a table lamp with a total height of about 60 to 70 cm. Such a lamp is extremely mobile and easy to use.

According to a further proposal of the invention, the lamp is designed to be adjustable in height. Height adjustability is understood to mean that the height of the lamp head can be adjusted above a floor or above a table top. Such height adjustability of the lamp head allows it to be adjusted depending on the size of a user so that a user sitting at a table does not perceive any luminous surfaces on the lamp, neither in terms of indirect radiation nor in terms of any direct radiation. The height adjustability can typically be in a range of about 10 to 20 cm, by which the lamp head can be adjusted in height so that different body sizes can be taken into account. The height adjustability is preferably about 15 cm. The Height adjustability can be realized, for example, via a telescopic mechanism formed on the light column.

Another embodiment of the invention provides that the lamp head is pivotably attached to the lamp column. As a result, different setting angles of the lamp head and thus different directions of radiation of the light can be realized.

Figur 1

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

Figur 2

die Leuchte aus Figur 1 in einer weiteren perspektivischen Ansicht von schräg unten;

Figur 3

einen Schnitt durch den Leuchtenkopf der Leuchte aus den Figuren 1 und 2 mit einer exemplarischen Abstrahlcharakteristik eines Leuchtmittels bei entfernten Abschirmungselementen;

Figur 4

die Darstellung aus Figur 3, jedoch mit einer exemplarischen Abstrahlcharakteristik eines Leuchtmittels bei eingesetzten Abschirmungselementen;

Figur 5

die Darstellung aus Figur 4, wobei die Abstrahlcharakteristiken für alle Leuchtmittel dargestellt sind;

Figur 6

ein Schnitt durch einen Leuchtenkopf in einer alternativen Ausgestaltung.

In the following, the invention is explained in more detail on the basis of exemplary embodiments and with reference to the accompanying drawings. Show it:

Figure 1

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

Figure 2

the lamp off Figure 1 in another perspective view obliquely from below;

Figure 3

a section through the lamp head of the lamp from the Figures 1 and 2 with an exemplary radiation characteristic of a light source with the shielding elements removed;

Figure 4

the representation Figure 3 , but with an exemplary radiation characteristic of a light source with shielding elements used;

Figure 5

the representation Figure 4 , the radiation characteristics are shown for all lamps;

Figure 6

a section through a lamp head in an alternative embodiment.

Figure 1 shows a lamp designated as a whole with 1, comprising a lamp base 2, a lamp head 3 and a lamp column 4 extending between the lamp base 2 and the lamp head 3. The lamp 1 is designed as a table lamp and can be placed with its lamp base 2 on a table, for example be positioned on a desk. The lamp head 3 is cuboid and comprises an upper side 11, an underside 12 which is parallel to the upper side 11 and which faces the lamp base 2, and a circumferential edge 13 arranged between the upper side 11 and the lower side 12. The distance X between the upper side 11 and the bottom 12 is 1.4 cm. The entire lamp 1 has a height of about 66 cm.

The top 11 of the lamp head 3 is formed from a translucent material, for example from glass or a suitable translucent plastic. The top 11 is not part of the glare control arrangement explained below. In an intermediate space between the top 11 and the bottom 12 of the lamp head 3, first lighting means 5 are arranged in a plane E parallel to the top 11 or bottom 12, which can be seen from the sectional views of Figures 3 to 5 can be seen. The first lighting means 5 are light-emitting diodes (LEDs) which are arranged on a common printed circuit board. In the lamp head 3 LEDs are arranged in parallel rows. The light from the LEDs is emitted as an indirect light component 6 upwards through the top 11 of the lamp head 3, which is designed to be translucent. The LEDs are selected in such a way that an average illuminance of 300 lux can be achieved at a workplace, for example on a desk, via the indirect light component 6. In any case, the lamp 1 is suitable for illuminating a workplace, for example at a desk, in accordance with the DIN EN 12464/1 standard.

In addition to the first lighting means 5, a glare control arrangement 7 is also arranged in the space between the upper side 11 and the lower side 12 of the lamp head 3, cf. Figures 4 and 5 . The Glare control arrangement 7 is arranged parallel to plane E or the top 11 and the underside 12 of the lamp head 3 and comprises a light-directing film 8 and shielding elements 9. The glare control arrangement (7) has a height (H) of 0.6 cm. An arrangement of the anti-glare arrangement 7 parallel to the plane E is to be understood as meaning that the anti-glare arrangement 7 as a whole is aligned parallel to the plane E, even if individual components, such as the individual shielding elements 9, have a certain non-zero angle within the anti-glare arrangement 7 with level E. The light-directing film 8 is arranged between the first lighting means 5 and the shielding elements 9 at a distance of only about 1 mm from the first lighting means 5. The light-directing film 8 has a microstructure which filters the light emitted by the first lighting means 5. The microstructure is designed in such a way that light rays emanating from the first illuminants 5 only pass through the film 8 in a defined angular range, while light rays are reflected outside this angular range. The film 8 can, for example, be a light-directing film from the Focus line developed by Polyscale GmbH.

Figure 3 shows the effect of the light-directing film 8 on the radiation characteristics of a first luminous means 5. For a better understanding of the mode of operation of the glare control arrangement, the illustration in FIG Figure 3 The shielding elements 9 are deliberately omitted. After passing through the light-directing film 8, the light from a first illuminant 5 is emitted essentially in two angular ranges: the main portion is emitted as an indirect light portion 6 in an angular range γ between 0 ° and about 20 ° with respect to the vertical V, another small portion of light 14 is emitted at an angle β of approximately 70 ° with respect to the vertical V.

When the lamp 1 is used as a table lamp with a lamp head as shown in the illustration Figure 3 , ie without shielding elements, a standing viewer would be blinded by the light portion 14, since the lamp head 3 with a total height of the lamp 1 of about 66 cm and one average table height of 72 cm at a height of about 138 cm above the floor and thus generally below the eye level of a standing observer.

To prevent this, the luminaire 1 according to the invention, as shown in FIG Figure 4 in addition to the light-directing film 8, shielding elements 9 made of metal or plastic. It's over Figure 4 It can be seen that the light component 14 is shielded by the shielding elements 9 arranged between the light-directing film 8 and the top side 11 of the lamp head 3 in such a way that ultimately only the indirect light component 6 emerges from the lamp head 3. The shielding elements 9 are positioned in parallel rows and offset to the rows of the first illuminants 5, in such a way that the light components 14 exiting the first illuminants 5 at flat angles β are shielded by the shielding elements 9 and not from the lamp head 3 at flat angles β step out. The dimensions of the shielding elements 9, in particular their height, are aligned with the exact emission direction of the light components 14. At the same time, the shielding elements 9 are designed and arranged in such a way that they in no way influence the indirect light component 6 emitted within the angular range γ. In the embodiment shown, the shielding elements 9 are designed as webs with a triangular cross-section, the height of the individual webs being approximately 5 mm. The angle α, which the two flanks of a web enclose with one another, is 62 °.

Thus, the light emitted by the first illuminants 5 emerges from the lamp head 3 at an emission angle γ which is limited to approximately 20 ° with respect to the vertical V after passing through the glare control arrangement 7. Even with a height of the lamp head 3 of only about 138 cm above the floor, glare of a standing viewer is avoided in this way while at the same time powerful light is extracted.

How out Figure 2 As can be seen, the lamp 1 has, in addition to the first lamps 5, second lamps 16 which are arranged in a lamp holder 17. The lamp holder 17 is received in a receptacle 18 formed on the lamp head 3 in the area of its underside 12 and can be pivoted about two axes relative to the receptacle 18. The second lighting means 16 couple out a second light component, not shown here, which is emitted as a direct light component downwards, for example in the direction of a work surface. As the lamp holder 17 can be pivoted, a user can adjust the second, direct light component according to the respective needs.

Figure 6 shows an alternative embodiment of the lamp head 3, the same reference numerals corresponding to the same components. The shielding elements 9 cannot be seen in the sectional illustration selected here. The first illuminants 5 are arranged under the light-directing film 8. In addition, each first lamp 5 is arranged in a mixing chamber 20, the mixing chambers 20 being formed from an arrangement of plastic webs 21 made of a highly reflective plastic material. The function of the mixing chambers 20 is to reflect light rays which, starting from the first illuminants 5, strike the light-directing film 8 and are not in the angular range desired for the passage and are therefore reflected by the film 8, again in the direction of the film 8 . This process is repeated several times under certain circumstances until the radiation finally hits the light-directing film 8 in the angular range desired for the passage and can pass through it.

In addition, the embodiment of FIG Figure 6 second lighting means 16 for emitting a direct portion of light. The second lighting means 16 are arranged in a common plane D, which lies parallel to the plane E of the first lighting means 5. The second lighting means 16 can provide a direct light component in one of the areas shown in FIG Figure 6 be emitted in a substantially downward direction. The lighting means 16 and an optical system 22 that covers them are designed in such a way that the direct light component is a wide-beam distribution (not shown here), but asymmetrically is emitted, a maximum of the radiation being emitted in an angular range between 30 ° and 40 ° with respect to an axis F. This angular range in which the maximum radiation is located is in Figure 6 indicated schematically as a hatched area G starting from a point on the optics 22. The axis F runs perpendicular to the planes E and D. The lamps 16 are arranged in a lamp holder 19, which is designed as a flat, rotatable disk on the underside 12 of the lamp head. The disc-shaped lamp holder 19 can be rotated about the axis F, whereby a user can grip an outer ring 23 of the lamp holder 19 and rotate the lamp holder 19 relative to the lamp head 3. As can easily be seen, the maximum of the radiation of the direct light component can thereby be directed to another point without the lamp having to be moved or the second lighting means 16 having to be pivoted out of the plane D lying parallel to the plane E.

It should be noted that the embodiment of Figure 6 shows an embodiment of the lamp according to the invention with mixing chambers 20 and with a lamp holder 19 arranged in a lamp holder 19 designed as a rotatable disc, of course, in alternative embodiments of the invention, these two features can also be implemented independently of one another, for example in combination with individual features of the in the Figures 1 to 5 shown embodiment.

The first lighting means 5 and the second lighting means 16 and thus the direct light component and the indirect light component 6 can be controlled independently of one another, ie the first and second lighting means 5, 16 can be switched on and off independently of one another, but they can also be dimmed and dimmed independently of one another / or can be adjusted in their light color and / or color temperature. The second lighting means 16 and thus the direct light component can be controlled wirelessly by the user, for example via a smartphone or another suitable device for mobile communication. The first lighting means 5 are controlled via building technology, for this purpose Signals from presence and / or daylight sensors are fed into the controller.

The luminaire 1 is therefore suitable as a small, table-bound luminaire to generate both powerful, indirect room lighting and direct workplace lighting, with the special anti-glare arrangement effectively preventing glare from standing viewers. In addition, the lamp 1 is characterized above all by the fact that it can be used very flexibly as a small, mobile lamp and can be repositioned again and again without great effort. Furthermore, it reduces the number of light horizons compared to conventional lighting systems consisting of ceiling lights or floor lamps in combination with desk lights, since both the indirect light component 6 and the direct light component are emitted from a single plane defined by the lamp head 3. Finally, the extremely low height H of the anti-glare arrangement 7 allows a correspondingly flat construction of the lamp head 3, whereby the lamp also meets the requirement for a reduced, modern design.

Claims (17)

1. Luminaire (1), comprising a luminaire base (2), a luminaire head (3) as well as a luminaire stand (4) extending between the luminaire base (2) and the luminaire head (3), wherein the luminaire head (3) comprises first illuminants (5), which are arranged in a common plane (E), and which are adapted to extract a first, indirect fraction of light (6), and wherein the luminaire head (3) moreover comprises a glare suppression arrangement (7), characterized in that the glare suppression arrangement (7) is arranged in parallel to the plane (E), and comprises a light-directing foil (8) as well as shielding elements (9), wherein the shielding elements (9) are arranged such that a beam spread (γ) of the indirect fraction of light (6) after passage through the glare suppression arrangement (7) is limited to 30° with respect to a vertical (V) to the plane (E), and wherein the glare suppression arrangement (7) in the direction of the vertical (V) has a maximum height (H) of 2.0 cm.
2. Luminaire (1) according to claim 1, characterized in that the beam spread (y) of the indirect fraction of light (6) after passage through the glare suppression arrangement (7) is limited to 22° with respect to a vertical (V) to plane (E).
3. Luminaire (1) according to claim 1 or 2, characterized in that the glare suppression arrangement (7) in the direction of the vertical (V) has a maximum height (H) of 0.8 cm.
4. Luminaire (1) according to claim 1 to 3, characterized in that each first illuminant (5) is arranged in a mixing chamber (20).
5. Luminaire (1) according to any one of claims 1 to 4, characterized in that the luminaire head (3) comprises second illuminants (16) for extraction of a second, direct fraction of light.
6. Luminaire (1) according to claim 5, characterized in that the second illuminants (16) are arranged in a luminaire mounting (17), which is received in a seat (18) formed on the luminaire head (3), wherein the luminaire mounting (17) is pivotable about two axes perpendicular to each other relative to the seat (18)
7. Luminaire (1) according to claim 5, characterized in that the second illuminants (16) are arranged in a common plane (D), wherein the plane (D) is in parallel to the plane (E) of the first illuminants (5).
8. Luminaire (1) according to claim 7, characterized in that the direct fraction of light extracted by the second illuminants (16) is radiated asymmetrically, wherein a maximum of radiation is in an angular range between 25° and 45° with respect to a vertical to plane (D).
9. Luminaire (1) according to claim 7 or 8, characterized in that the second illuminants (16) are arranged in a luminaire mounting (19) which is rotatable about an axis (F) extending perpendicularly to the planes (E) and (D).
10. Luminaire (1) according to any one of claims 5 to 9, characterized in that the direct fraction of light and the indirect fraction of light (6) are controllable independent of each other.
11. Luminaire (1) according to any one of claims 5 to 10, characterized in that the luminaire (1) has a user identification by means of which the direct fraction of light can be automatically adjusted depending on the user.
12. Luminaire (1) according to any one of claims 1 to 11, characterized in that the indirect fraction of light (6) is controllable via a sensor system.
13. Luminaire (1) according to any one of claims 1 to 12, characterized in that the luminaire (1) is formed as a table luminaire and comprises a total height of 60 cm to 70 cm.
14. Luminaire (1) according to any one of claims 1 to 13, characterized in that the luminaire (1) is adjustable in height.
15. Luminaire (1) according to any one of claims 1 to 14, characterized in that the luminaire head (3) is cuboid-shaped.
16. Luminaire (1) according to claim 15, characterized in that the cuboid-shaped luminaire head (3) has a length between 20 cm and 40 cm and a height between 20 cm and 30 cm.
17. Luminaire (1) according to any one of claims 1 to 16, characterized in that the luminaire head (3) is fastened to the luminaire stand (4) in a pivotable manner.

Images