EP2642182A2 - Light device with control of the colour temperature and light emission from two sides - Google Patents

Abstract

The device has upper and lower surface sides (3, 4) arranged on sides of an illuminating body, where the sides face away from each other. The surface sides are associated with illuminating units (12, 13) for producing light radiations, respectively. Adjusting units (14) are associated to the illuminating units for adjusting a color temperature of the light radiations independent of each other by mixing of light of different light spectrums. The illuminating units include LEDs, which are arranged in a plane along a virtual, annular line.

Description

The invention relates to a preferably designed as a surface light lamp device with a lamp body, with a first surface side, the first light source for generating a first light radiation are assigned and associated with a second surface side, the second light source for generating a second light radiation.

Luminaire devices with arranged in the range of different surface sides of a lamp body bulbs are basically known. Depending on the type of light, the bulbs can be partly switched on or off separately from each other or separately. Furthermore, suspended luminaires, in particular for installation on dining tables are known. These usually have only a single (lower) surface side associated with bulbs that are either only on and off and dimmable in comfortable lamps beyond.

Due to the static color temperature of their light sources, particularly known suspended luminaires have the problem that they are not designed to be adaptable to the daily different life situation or, as a rule, optimized only for a life situation. For example, to do paperwork, like homework, a cold white light is more needed, whereas in the evenings, a neutral white or warm white light would be more preferable. These different requirements or wishes can not be met by standard pendant luminaires. Particularly unsatisfactory are known suspended luminaires in the event that one of the ambient lighting and different table or work lighting is desired.

Based on the aforementioned prior art, the present invention seeks to provide an aesthetically pleasing lighting device that optimally to different life situations or Light situation is customizable. In particular, the luminaire device should be suitable for illuminating different surface areas.

This object is achieved with a luminaire device having the features of claim 1.

Advantageous developments of the invention are specified in the subclaims. All combinations of at least two features disclosed in the description, the claims and / or the figures fall within the scope of the invention.

The invention is based on the idea of first designing the luminaire device in such a way that the first and the second surface side (radiating sides) are arranged on two different sides of the luminaire body, in particular in such a way that one of the surface sides (the first one) under normal conditions of assembly of the luminaire device above and the second, preferably arranged parallel to the first surface side surface side is directed downwards, so that the lamp device can emit light in opposite directions, so in particular in the case of the formation of the lamp device as a pendant with the one of the surface sides associated bulbs the ceiling and be able to illuminate the floor or a table surface or the like with the bulbs associated with the further surface side. In order to make it possible to adapt to different life situations in such a luminaire device, it is provided in a further development of the invention to assign setting means to the first and / or the second luminous means with which the color temperature of the first or the second luminous radiation can be adjusted. In this way it is possible to vary the color temperature of the light emitted by at least one surface side to meet the individual needs, especially in a living room. It is thus possible, for example, to vary the color temperature from warm white to neutral white to daylight white (also called cool white), depending on the choice of the light source, with daylight white being included a pendant lamp, for example, can then be set meaningfully, if on the illuminated table paperwork, such as homework should be done and neutral white or warm white, if meals are taken, or a cozy evening mood to be generated. Preferably, the color temperature of the first and / or second (resulting) light radiation at at least approximately constant brightness, in particular luminous flux measured in lumens, adjustable. It is particularly preferred if the color temperature can be adjusted continuously or in many small steps in a large color temperature range. Most preferably, at least five, preferably at least ten, even more preferably at least five hundred, very particularly preferably at least one thousand different color temperatures can be set with the luminaire device. The luminaire device according to the invention offers completely new possibilities for illuminating a residential or commercial space and offers a high degree of customization or adaptability.

Particularly preferred is an embodiment in which in addition to the adjusting means for adjusting the color temperature dimming means for adjusting the brightness, in particular the luminous flux, the first and / or second lighting means are provided. Alternatively, an embodiment of the luminaire device can be implemented exclusively with setting means for changing the color temperature, but without dimming means. Preferably, the dimming means are designed such that with these the first and second lighting means are independently dimmable, so that the brightness of the first and the second light radiation is independently adjustable. It is particularly preferred if the first and / or the second lighting means can be dimmed to zero. It is also possible to make the first and the second lighting means independently switched on and off.

An embodiment in which both the color temperature of the first and the second (resulting) light radiation is very particularly preferred is adjustable, most preferably independently, so that the color temperature of the downwardly emitted light differ from the color temperature of the upwardly emitted light. A variation of the color temperature of the upwardly radiated light is useful, for example, to achieve a tailored to a certain ceiling color lighting impression and / or to vary the perceived fundamental space mood, preferably regardless of the lighting situation below the lamp body, so that, for example, an illumination of the Ceiling area to create a cozy mood in warm white is possible, although at the same time a working area below the filament to protect the human eye or to prevent fatigue is illuminated with daylight white.

In principle, it is possible that only the color temperature of the first light radiation or alternatively only the color temperature of the second light radiation is adjustable. Instead of being able to adjust the color temperature of the first and the second light radiation independently of one another, an embodiment can be realized, in particular with comparatively simple setting means, according to which the color temperature of the first and second light radiation is coupled, that is not independently adjustable, in particular (but not necessarily ) such that the first light radiation and the second light radiation at any time have the same color temperature.

Also, an embodiment can be realized in which only the color temperature of the first light radiation or alternatively only the color temperature of the second light radiation is adjustable.

With regard to the specific design of the setting means for adjusting the color temperature, there are different possibilities. Particularly preferred is a variant in which the adjustment means is adjustable by addition of light spectra, wherein, for example, the mixing ratio, in particular the intensity ratio (brightness ratio) of at least two light units, preferably LEDs, with a different color temperature is variable. In such an embodiment variant, the first and / or second lighting means comprise at least two, preferably three light units emitting a light radiation of different color temperature. With the aid of the adjustment means, for example, the luminous intensity and thus the mixing ratio of the light spectrums can be set. Additionally or alternatively, the ratio of the energized lighting units of a first color temperature to the number of energized lighting units of a second color temperature can be varied in order to adjust the resulting color temperature can. It is also possible to provide more than two lighting units or groups of lighting units with a different color temperature from each other.

Additionally or alternatively, the first and / or second lighting means may be associated with filter means for color temperature adjustment, wherein it is possible to change the filter properties and / or in the simplest case, the position of the filter relative to the beam path. Thus, a filter, for example, between a first and a second position, preferably automated, be arranged adjustable, wherein the filter in the first position is illuminated by the bulbs and in the second position is not or only partially illuminated. The adjustment may be mechanical, for example via an electric motor or, alternatively, manually, e.g. done by moving.

Preferably, the lighting means comprise at least two light units or groups of light units with a mutually different light spectrum, wherein even more preferably the light units emit monochromatic light.

It is very particularly preferred if the color temperature of the first and / or second light radiation is adjustable in a light-temperature range between about 2800 K and about 8500 K, preferably between about 2900 K and about 6500 K, preferably between about 3000 K and about 5800 K. is. Particularly preferably, the luminaire device is designed such that it only emits light, which is white by the human sensation, wherein the whiteness depending on the color temperature may be different, for example, between warm white and / or neutral white and / or daylight white may vary. Most preferably, the lighting device is designed such that it can not be emitted by the human observer perceived as white color with this.

It is particularly preferred if the luminaire device is designed as a surface radiator. This is to be understood as a luminaire device in which a multiplicity of luminous units, in particular LEDs, are arranged next to one another, preferably in a common plane. It is possible to form the first and / or second lighting means as a collection of light units, in particular LEDs. It is particularly expedient if lighting units are arranged along a preferably annularly arranged or circumferentially closed imaginary line. Especially in such an embodiment, different lighting units for generating different color temperatures, preferably alternately arranged side by side.

Very particular preference is given to an embodiment of the luminaire device in which the first and / or second luminous means are arranged behind (in each case) a surface element which can be transilluminated by the first or second luminous means. The two surface elements are preferably arranged parallel to one another and are located on mutually remote sides of the lamp body. In this case, it is particularly preferred if the surface elements are spaced apart from one another by means of a preferably circumferentially closed, for example metallic, in particular slightly metallic sidewall, for example made of an aluminum alloy, which is preferably perpendicular to the surface elements. Particularly preferably, the surface elements have a length and / or width extension, which corresponds to a multiple of the height extent of the side wall, thus providing a flat overall impression of the entire To produce lighting device. In the case of dispensing with the surface elements, the lighting means may for example be integrated directly into the surface sides or alternatively hidden, that they are not visible from below or above and the light radiation is deflected so that these on the first and second surface side radiates.

It is particularly expedient if the first lighting means and / or the second lighting means do not emit directly in the direction of the first or second surface side, ie. H. are not oriented in the direction of the first or second surface side, but are arranged such, in particular along a side wall described above, that the first and / or second light emitting means inwardly, preferably towards the center to avoid or at least reduce the effect in that individual luminous dots, in particular in the case of the design of the luminous means, are visible as LEDs on the surface sides. Most preferably, the first and / or second lighting means are covered towards the respective associated surface side and radiate laterally, in particular in the direction of the surface extension of the first or second surface side, preferably on Lichtstrahlungsstreu- and / or reflecting means, the light radiation even or Redirect to the respective surface side to generate a visually appealing image.

Particularly preferably, the first and the second surface side define main emission directions of the luminaire device, with the result that the luminaire device radiates, preferably exclusively, two main directions facing away from one another. It is particularly preferred if the first and second lighting means are optically decoupled, such that the first lighting means do not radiate on the second surface side of the lamp body and vice versa. This can be achieved for example by the provision of non-translucent, for example, designed as a partition plate separating means between the bulbs. Preferably, the release agent simultaneously form a support for, preferably in each case more LEDs comprehensive, bulbs. If so desired, it is also conceivable translucent, ie to provide the translucent release agent. In this case, the second lighting means also shine in the direction of the first surface side and vice versa

In terms of design, it is expedient to arrange the first lighting means in a first lighting chamber, if provided preferably by the first surface element, and the second lighting means in a second lighting chamber, if present preferably delimited by the second surface element, wherein between the lighting chambers, preferably as a partition wall of the chambers, the opaque or translucent release agent are provided, which preferably have a support function for the first and second lighting means. If necessary, both light chambers may be bounded on the outer periphery of the aforementioned, preferably circumferentially closed side wall, if provided.

With regard to the configuration of operating means for manual operation of the adjusting means and / or the optional dimming means, there are different possibilities. Thus, these can be provided on the luminous element, in particular on an upper side, which is preferred and / or designed as, preferably wireless remote control.

It has proven to be particularly advantageous for intuitive operation if the operating means are designed in the manner of a touch panel, which is preferably elongated, wherein the operating means an operating signal for the adjusting means in response to a touch position and / or a contact extension, which may be proportional to generate the contact pressure and / or the length of a contact path, preferably crossed over by a finger. The operating means can be designed to detect, for example, capacitively or inductively a touch. Very particular preference is given to providing separate, preferably parallel elongated, touch-sensitive control panels for independently setting the first and second color temperatures.

With regard to the specific design of the lighting device, there are different possibilities. As mentioned above, it is particularly preferred to design the lighting device as a suspended luminaire, in which case at least one cable-shaped or at least one rod-shaped suspension can be provided for suspending the luminaire body. This is preferably determined in the region of an upper surface side on the lamp body. It is also possible to design the lighting device as a floor lamp with a corresponding base or as a table lamp with a shortened compared to a floor lamp base. Regardless of the specific embodiment of the luminaire device, it is preferred if the luminaire device is aligned in accordance with the intended installation or installation so that the first surface side upwards, especially towards the ceiling and the second surface side down, especially towards the ground is aligned.

Fig. 1:

eine perspektivische Ansicht einer als Hängeleuchte ausgebildeten Leuchtenvorrichtung,

Fig. 2:

eine weitere perspektivische Ansicht der Leuchtenvorrichtung gemäß Fig. 1 mit Fixiermitteln zum Fixieren der Leuchtenvorrichtung an einer Decke,

Fig. 3:

eine stark schematisierte Längsschnittansicht durch eine Leuchtenvorrichtung und

Fig. 4:

eine Draufsicht auf eine Flächenseite der Leuchtenvorrichtung.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawings. These show in:

Fig. 1:

a perspective view of a designed as a pendant luminaire device,

Fig. 2:

a further perspective view of the lighting device according to Fig. 1 with fixing means for fixing the lighting device to a ceiling,

3:

a highly schematic longitudinal sectional view through a lighting device and

4:

a plan view of a surface side of the lamp device.

In the figures, like elements and elements having the same function are denoted by the same reference numerals.

In the Fig. 1 and 2 is a perspective lighting device 1 is shown. This comprises a luminaire body 2 with a substantially elongated cubic shape, comprising an upper, first surface side 3 and a lower second surface side 4 arranged parallel thereto and facing away therefrom.

As will be explained later, each of the surface sides 3, 4 in the interior of the lamp body 2 arranged first or second illuminants are assigned, which in turn are assigned adjusting means for adjusting the color temperature of the emitted light radiation. The adjusting means are operable by means of operating means 5 arranged in the region of the first surface side 3, wherein the operating means comprise a plurality of elongated touch-sensitive control panels along which a user's finger can move to output corresponding operating signals to the adjusting means with which the color temperature of the first and second bulbs can be changed independently of each other continuously.

The operating means 5 further have a touch-sensitive field for controlling dimming means, not shown, with which the brightness of the light radiation of the first and second lighting means is adjustable. If necessary, the first and second lamps can be assigned separate dimming means.

As is clear from the Fig. 1 and 2 shows, on the first surface side 3, a first, partially durchleuchtbares surface element 6 is provided, below which the first light sources are on a release plate designed as separating means (not shown), which separates the first surface side 3 optically from the second surface side 4.

Parallel to the first transilluminatable surface element 6, in the region of the second surface side 4, there is a second transilluminated surface element 7 provided, behind which the second lighting means are arranged. First and second bulbs are fixed to the release means, not shown, which thus form carrier simultaneously.

The surface elements 6, 7 are spaced apart by a circumferential side wall 8.

As is clear from the Fig. 1 and 2 results are fixed to the first surface side 3 two spaced suspension strings 9, which are held in an upper region in fixing means 10, with which the lamp device 1 is mounted on a ceiling. The length of the hanging ropes 9 is variable, in particular by rolling the ropes within a cover-side housing of the fixing 10th

Based on 3 and 4 is generically a possible operation of a lighting device according to the Fig. 1 and 2 explained.

To recognize are in the sectional view according to Fig. 3 plate-like release agent 11, which simultaneously form a support plate for lamps. On a first (upper) surface of the separating means 11 are the first lamp means 12 comprising a plurality of LEDs which are associated with the upper first surface side 3 and emit upward. On the side facing away from the first light-emitting means 12 lower surface of the separating means 11 are second light-emitting means 13, which also consist of a plurality of LEDs which radiate down. The second light sources 13 are assigned to the second surface side 4 facing away from the first surface side 3 and directed downwards. The first and second lighting means 12, 13 are assigned adjusting means 14, which by means of in 3 and 4 not shown operating means are operable. With the aid of the adjusting means 14, the color temperature of the first and second lighting means 12, 13 are set independently.

For this purpose, the plurality of LEDs of the first and second lighting means 12, 13 comprise different LEDs with different light spectrums. By a corresponding spectral addition, the color temperature of the first and second light radiation can be varied, for example by the current and thus the intensity of individual LEDs of the first and second bulbs 12, 13 is changed and / or in that the ratio of energized LEDs different color temperature the first and / or second lighting means is varied. For example, to obtain a first color temperature, it is possible to energize three LEDs of a first type of LEDs of the first lamps and five LEDs of a second type of lamp and, for example, four of the first type of LEDs and seven to obtain a second color temperature different from the first color temperature the second type of LEDs.

Out Fig. 4 a possible arrangement of LEDs of the first light-emitting means 12 is shown, and this can also apply analogously to the LEDs of the second light-emitting means 13. The LEDs (light units) are arranged along a circumferentially closed imaginary line and can be controlled individually or in groups by the adjustment means 14, with regard to their luminous intensity and / or with regard to a current supply or non-energization.

reference numeral

1

A lighting device

2

luminaire body

3

first surface side

4

second surface side

5

operating means

6

surface element

7

surface element

8th

Side wall

9

suspenders

10

fixer

11

release agent

12

first light source

13

second light source

14

adjustment

Claims (15)

Luminaire device with a lamp body (2), with a first surface side (3), the first light means (12) are assigned for generating a first light radiation and with a second surface side (4) of the second light means (13) are associated for generating a second light radiation .
characterized,
that the first and the second side surface (3, 4) are arranged on opposite sides of the lamp body (2) and that the first and / or second light emitting means (12, 13) adjusting means (14) for adjusting the color temperature of the first and associated with second light radiation. Lighting device according to claim 1,
characterized,
that the color temperature of the first and second light radiation is independently or coupled adjustable. Lighting device according to one of claims 1 or 2,
characterized,
in that the first and / or the second luminous means (12, 13) each have at least two, preferably three, luminous units, in particular LEDs of different color temperature, and the adjusting means (14) are designed to adjust the color temperature by mixing the light of different light spectra. Lighting device according to one of the preceding claims,
characterized,
in that the first and / or second lighting means (12, 13) are assigned filter means for color temperature adjustment. Lighting device according to one of the preceding claims,
characterized,
that the color temperature of the first and / or second light radiation, preferably exclusively in a color temperature range between 2800K and 8500K, preferably between 2900K and 6500K, preferably between 3000K and 5800K is adjustable. Lighting device according to one of the preceding claims,
characterized,
that the color temperature of the first and / or the second light radiation according to DIN 5035, preferably exclusively warm white and / or neutral white and / or daylight white (cold white) is adjustable. Lighting device according to one of the preceding claims,
characterized,
in that the first and / or second light sources (12, 13) are assigned dimming means for adjusting the light brightness. Lighting device according to one of the preceding claims,
characterized,
in that the luminaire device (1) is designed as a surface radiator and the first and / or second luminous means (12, 13) comprise a plurality of luminous units, preferably LEDs, preferably arranged in a plane, preferably along an imaginary, more preferably annular, line. Lighting device according to one of the preceding claims,
characterized,
in that a first surface element (6) which can be transilluminated by the first illuminant (12) and / or the second illuminant (13) is associated with a second surface element (7) which can be transilluminated by the latter. Lighting device according to claim 9,
characterized,
that the surface elements (6, 7) via a, preferably perpendicular to the surface elements (6, 7) extending, preferably circumferentially closed, side wall (8) are spaced apart. Lighting device according to one of the preceding claims,
characterized,
in that the first and the second lighting means (12, 13) are spaced above, preferably as a support for the first and second lighting means (12, 13), preferably plate-shaped, more preferably non-transparent separating means (11). Lighting device according to claim 11,
characterized,
in that the first lighting means (12) are arranged in a first lighting chamber, preferably delimited by the first surface element (6), and the second lighting means (13) are arranged in a second lighting chamber, preferably delimited by the second surface element (7), and in that between first and the second lighting chamber, which are preferably the light-limiting chambers, separating means (11). Lighting device according to one of the preceding claims,
characterized,
in that operating means (5) are provided for operating the adjusting means (14) and / or for actuating dimming means, on the lamp body (2) and / or as a preferably wireless remote control. Lighting device according to claim 13,
characterized,
in that the operating means (5) comprise at least one touch-sensitive, preferably elongated, control panel which preferably forms an operating signal as a function of a touch position and / or a contact surface extension and / or the length of a run over contact section for the adjustment means (14) and / or the dimming means is. Lighting device according to one of the preceding claims,
characterized,
in that the luminaire device (1), which is preferably designed as a suspended luminaire, floor lamp or table lamp, has fixing and / or erecting means which are designed and arranged in such a way that the first surface side (3) rises upwards and the second surface side (4) during normal installation or installation. is oriented downwards.

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