EP2375129A1 - Area light, in particular multifunction area light - Google Patents

Abstract

The light has a flat housing (1) for limiting a direct light outlet surface (7), and an external area (5) enclosing the housing and retains a set of illuminants (6) e.g. LEDs. The external area is separated from an interior (2) of the housing, where the housing and the external area are formed by a chamber sided profile part (10) and a cover sided profile part (9) that engage with each other. A curved profile wall extends up to lower edge of the housing, and is formed at the cover-sided profile part. The chamber sided profile comprises a profile bar (11) extending in the direction of the wall.

Description

The invention relates to a surface light, in particular multi-functional surface light with a flat housing for receiving a plurality of light sources arranged in particular in a plane and at least one room-side, a main light area forming direct light exit surface.

Surface lights of this type are known, and it is also known to perform by equipping the flat housing with different light sources and corresponding control of these bulbs, a simulation of the daylight profile by light mixing, i. Color temperature and brightness at the direct light exit surface to vary.

The object of the invention is to make surface lights of the type specified while ensuring a cost-effective and especially in terms of dimensions easily variable structure in such a way that generates optimal mixed light with finely tuned effect by using different light colors and brightnesses in each room, i. In particular, a biodynamic light mixture of high aesthetic quality light is possible.

This problem is solved in its most general form in that the housing delimiting the direct light exit surface is enclosed by an outer space region intended in particular for accommodating bulbs, which is separated from the interior of the housing and optically separated, frame-shaped, surrounding the main light region from the main light area appearing accent light area forms.

By creating active but separate direct light zones in the form of a main light area and an accent light area surrounding them, which form individually recognizable light fields, light mixtures and thus light colors can be achieved in the room to be illuminated from both separate areas, which are much more lively and light aesthetically pleasing than light mixtures that are made in the same light field.

According to a preferred embodiment of the invention, the interior of the housing is light-tightly separated from the outer space region and the outer space region open on the room side formed by the peripheral wall of the housing and a housing supported by the housing, in particular curved and at least substantially over the housing height extending outer wall, starting from the upper End of the housing extends while increasing the distance from the housing down.

By appropriately equipping the luminaire with suitably selected luminous means, two or three separate light zones can be created, in addition to an indirect indirect light zone generated by ceiling-side radiation as required, a central main light area and a surrounding accent light area.

Since the main light area and the surrounding accent light area with respect to color temperature and / or brightness are completely independent, in the room to be illuminated an optimal and pleasant light or color temperature can be generated and at the same time lamp side a pleasantly perceived illustration of the daylight atmosphere is effected by the main light area and the clearly distinguishable from this accent light area with regard to color temperature and brightness are controlled differently. For example, with constant bright main light range and white light color, the accent light range can deliver specifiable blue light, giving the impression of a replica of a sunny summer sky.

The individually recognizable light sources of the main light area and the accent light area as a surface and frame create an image framed by light colors, in which the different light colors are clearly recognizable and mix perfectly in the room in the desired manner.

The separate, direct light supplying light zones allow a daytime-dependent coding of the lighting mood and advantageously also the generation of RGB lighting moods, as used for example in spas, but also in restaurants and hotels.

These effects are made possible by the fact that the central main light area on the one hand and the frame-shaped Akzentlichtbereich other bulbs of different, especially adjustable color temperature and / or brightness depending on the room side required mixed light or direct light and indirect light are assigned. Demanded indirect, in particular also serving for ceiling lighting light is generated as a rule by the light source associated with the main light area.

A particularly advantageous embodiment of the invention is characterized in that the bulbs of the frame-shaped Akzentlichtbereichs are hidden by a room side located, circumferential profile web. This profile web preferably extends obliquely upwards, starting from the border of the main light exit surface, so that a compact receiving area for bulbs is created between the housing wall and the obliquely extending profile web, which fully act on the accent light area that is open on the room side, but are withdrawn from below.

According to an advantageous embodiment of the invention, the lamps associated with the interior and required electronic ballasts are arranged in a preassembled support frame. Such a preassembled support frame is preferably used when the lamp housing is made of sheet metal parts, but this support frame can also be found in any other housing designs, especially in housings constructed from profile parts, use.

An embodiment of the invention which is particularly distinguished by cost-effectiveness and variability is that the housing, which is particularly flat, and the frame space is formed by two interlocking, circumferential profile subunits, wherein a curved profile is formed on the ceiling-side, at least substantially the housing height-defining profile subunit in its upper region , At least up to the lower edge of the housing extending profile outer wall is formed and the room-side profile subunit on the one hand the extending in the direction of the curved profile outer wall Ausblend profile web and on the other hand preferably one inside Carrier web for holding a translucent direct light exit surface, which closes the housing on the room side.

The interior of the housing is closed on the cover side by means of either a light-tight or at least partially transparent to produce indirect light covering surface.

Adjacent or slightly below the cover-side covering surface according to a further embodiment of the invention, a band-shaped circumferential lateral light exit region is provided, which is preferably formed by a light-transmissive material consisting of frame member which is mounted between the housing and the ceiling or wall-side end cover.

From the aspects of economy and variability of the object of the invention, it is of particular importance that the two profile subunits are composed of rectangular profile parts or welded together or interconnected by connecting elements, wherein the extruded profiles inside webs and / or chambers for receiving electronic ballasts, converters and the like and at the same time serve as cooling elements.

According to one embodiment, for assembly and in particular maintenance, it is of particular importance that the room-side rectangular profile part with the associated direct light exit surface is mounted so as to be pivotable against a spring force with respect to the ceiling-side rectangular profile part via a lever arrangement designed in particular as a parallel link system. If a preassembled support frame is used to accommodate lamps and ballasts, which is compatible with the or wall-side housing, it is preferably provided that the parallel link system is hinged to this support frame, so that the inner region of this support frame is freely accessible after pivoting the frame or housing part carrying the direct light exit surface.

In this way, a tool-free comfort access to the bulbs is created, because assembly and maintenance work can be performed quickly and easily due to the Abschwenkbarkeit of the lower profile subunit or the lower frame part, may be provided in the bulb for accent lighting, easy accessibility given ,

According to a further embodiment of the invention, the interior of the housing is divided by an especially on both sides reflective formed intermediate wall into an upper and a lower illuminant space, both illuminant spaces are limited to the outside by direct light exit surfaces, so that direct light radiated into the room and especially in suspended versions indirect Light can be generated by wall or Deckenbeaufschlagung. Thus, depending on the embodiment, three separate light zones are available in order to be able to ensure the respectively desired optimal room lighting.

In particular, in the case of suspended or mounted embodiments of the invention, but also for recessed lighting, it is advantageous that at the room-side end of the curved profile wall of the ceiling-side rectangular profile part an outwardly extending circumferential ridge is provided, which serves as a stop web in recessed lights or as a support bar for supporting translucent or opaque flat frame elements serves. In embodiments with a desired indirect light component can be provided as a flat frame element, for example, an opal glass or prism frame, which receives indirect light and framed the direct light exit surface.

In particular for so-called shop lighting, it is advantageous if the interior of the housing for receiving a plurality of radiators, in particular pivoting radiator is formed, realize by the interaction of the radiator and the light source to be provided in Akzentlichtbereich bulbs and optionally additionally inserted in the interior of lighting particularly advantageous lighting concepts to let.

Further advantageous embodiments and features of the invention are specified in the subclaims.

Fig. 1

eine Schnittdarstellung zur Erläuterung des Grundkonzepts des Aufbaus erfindungsgemäßer Flächenleuchten,

Fig. 2

eine Ausführungsform einer erfindungsgemäßen Flächenleuchte mit abgeschwenktem unteren Profilteil,

Fig. 3

eine geschnitten dargestellte Ausführungsvariante einer abgehängten Leuchte mit der zusätzlichen Möglichkeit der Erzeugung von indirektem Licht,

Fig. 4

eine Ausführungsvariante der Erfindung, die insbesondere für Shop-Beleuchtungen geeignet ist,

Fig. 5

eine Anbau-Ausführungsform der Erfindung mit wandseitigem seitlichen Lichtaustritt,

Fig. 6

eine aus einer Gehäuse-Blechkonstruktion bestehende Einbauvariante der Erfindung, und

Fig. 7

eine Darstellung der zusammenzufügenden Einzelkomponenten einer erfindungsgemäßen Leuchte.

The invention will be explained in more detail by means of embodiments and with reference to the drawing; in the drawing shows:

Fig. 1

a sectional view for explaining the basic concept of the construction of inventive surface lights,

Fig. 2

an embodiment of a surface light according to the invention with swiveled lower profile part,

Fig. 3

a cutaway embodiment of a suspended luminaire with the additional possibility of producing indirect light,

Fig. 4

an embodiment of the invention, which is particularly suitable for shop lighting,

Fig. 5

a cultivation embodiment of the invention with wall-side lateral light exit,

Fig. 6

an existing of a housing sheet metal construction variant of the invention, and

Fig. 7

a representation of the assembled individual components of a lamp according to the invention.

According to the in Fig. 1 shown sectional view of a surface light according to the invention comprises a housing 1, which according to this embodiment has the shape of a closed flat square, in the interior 2 a plurality of lighting means 3 is arranged. In the illustrated example, a plurality of at least substantially arranged in a plane, single-capped fluorescent lamps are used as the light source 3, the color temperature is selected depending on the particular application. Preferably, color temperature and / or brightness can be adjusted, with required electronic components such as ballasts 12, converters and the like in the interior 2 of the housing 1 being able to be accommodated at the edge.

The housing 1 by a direct light exit surface 7 and the cover side by an opaque or at least partially transparent cover surface 8 closed housing 1 is surrounded by a curved outer wall 4 which extends substantially over the housing height and defines together with the housing peripheral wall 9 an outdoor area 5, the Room side is open and to Recording of bulbs 6 is used, which are preferably selected in terms of color temperature and / or brightness different from the bulbs 3 in the interior 2 of the housing 1.

In this way, a central main light area, which is assigned to the lighting means 3 in the interior 2 of the housing and an accent light area is obtained, which surrounds the main light area frame-shaped, so that two separate and individually perceptible direct light zones are present, which make it possible by choosing the light source, in illuminating room light mixtures and thus to achieve light colors that are much more vibrant and aesthetically pleasing light than mixed light, which is produced for correspondingly combined bulbs in a housing interior common to all bulbs.

The visible light areas of the main light area and the accent light area are optically separated from each other by a blanking land area, wherein according to a preferred embodiment the width of the blanking profile land corresponds approximately to the adjacent width of the accent light area.

From the aspect of economy and the demand for the creation of low-cost surface lights of different dimensions, it is of particular advantage if the housing 1 is constructed of extruded profiles, which are connected by punched-bent parts or by welding together to rectangular profile frame parts 9, 10. The two rectangular profile frame parts 9, 10 engage positively with closed luminaire, wherein the cover-side, at least substantially the housing height defining profile frame part 9 in its upper region which has outwardly extending, curved and ending in the lower edge of the housing outer wall 4, which forms the outer space region 5 together with the housing outer wall, while the room-side rectangular profile frame part 10 on the one hand has a in the direction of the curved outer wall 4 extending, preferably obliquely upwardly extending Ausblend profile web 11 and on the other hand internally a support web 13 for supporting the translucent direct light exit surface. 7 has, which closes the housing 1 room side. The direct light exit surface 7 may consist of microprismatic, diffuser / opal material or a combination thereof.

The illuminants 6 for the accent light region assigned to the outer space region 5 are preferably arranged on the back side of the blanking profile web 11 and thus removed from a direct view. Although not required for each application, selected fluorescent lamps and / or LEDs are used as the illuminating means 6 for the accent light area, specifically, depending on the purpose. On the room side, the outer wall 4 enclosing the housing 1 terminates in a peripheral web 18, which serves as a stop web for recessed luminaires or as a carrier web for the support of translucent, scattering or opaque flat frame elements 19.

The ceiling-side rectangular profile frame part 9 has an inwardly extending, circumferential support web 14, which serves to hold the cover-side covering surface 8.

The connection between the ceiling-side rectangular profile frame part 9 and the room-side rectangular profile frame part 10 is detachably formed, so that problem-free accessibility to the light sources 3, 6 is given by separation of the two profile frame parts. This is preferred room-side rectangular profile part 10 formed swung off, as shown in Fig. 2 For example, shown.

The Fig. 2 illustrates the simple basic structure of a luminaire according to the invention with a central main light area and an accent light area emerging in the form of a frame.

The closed at least at least substantially light-tight from each other, the main light area associated with the light source 3 and the Akzentlichtbereich associated bulbs 6 are in the ceiling-side profile frame part 9, which also accommodates all the necessary electronic components. As in Fig. 2 Particularly clearly visible, is given by the swing-mount or storage of the room-side rectangular profile frame part 10 optimum accessibility with respect to the bulbs 3, 6, ie assembly and / or maintenance can be performed very easily.

In the illustrated embodiment 10 parallel link arrangements 21 are provided to realize the Abschwenkbarkeit of the room side profile frame part, which cooperate with a tension spring 22, which also ensures that in the closed state of the lamp, the two rectangular profile frame parts 9, 10 are held in a defined position to each other.

Also to the in Fig. 2 In the embodiment shown it should be noted that combinations of fluorescent lamps, LEDs and / or TC-L lamps can be used as illuminants 3, 6 for the main light and the accent light range in order to optimally take into account the respective lighting task.

Fig. 3 shows a further embodiment of the invention, in which the interior of the housing 1 is divided by an in particular on both sides reflective formed intermediate wall 15 in an upper and a lower illuminant space and both bulbs are limited to the outside by direct light exit surfaces 7, 16. The intermediate wall 15 has a meandering structure in the illustrated example, so that the lighting means 3 can be arranged alternately in the upwardly or downwardly open recesses 17 of this intermediate wall and are thus located approximately in the same plane. In this way, in addition to the central, room-side main light area and also the room-side, frame-shaped Akzentlichtbereich a ceiling-sided indirect light area created. Due to the separate upper and lower illuminant spaces in the housing 1, an individual luminous means selection and / or control for direct light and indirect light is made possible, always in conjunction with the accent light range independently selectable with regard to light color and brightness. The flat frame element 9 surrounding the accent light region, which preferably consists of light-scattering or opal material, is exposed to indirect light.

Fig. 4 shows a further embodiment of surface lights according to the invention with the main light area enclosing Akzentlichtbereich, as they are used in particular when certain areas of space must be highlighted accentuated, as is the case in particular in retail stores. For this purpose, a plurality of radiators, in particular pivoting radiators are arranged in the interior of the housing, which can be fixed without problems in the housing or on the stable extruded profiles. These extruded profiles always have the same cooling function as in the previously described embodiments.

In this case, the room-side direct light exit surface 7 can preferably be designed so that the bundled light beams of the radiators 20 can emerge substantially undisturbed, while the other surface areas of the direct light exit surface are designed to be light-scattering. In addition to the radiators 20, additional bulbs 3 can be provided in the interior of the housing in order to provide desired light colors and brightnesses in the central main light region, which in turn are mixed on the room side with the specially selected light colors of the accent light region surrounding the main light region.

When provided for ceiling or wall mounting embodiment according to Fig. 5 is in the luminaire housing a cover or wall side located, circumferentially band-shaped, lateral light exit region 24 realized by means of a suitable translucent material, said translucent frame member between a top wall 25 and the housing peripheral wall 9 is held by clamping.

The existing in this case from a sheet metal housing, but which can also be formed from corresponding extruded profile elements, is designed to receive a preassembled support frame 23, said support frame 23 is designed for stability reasons, for example in cross-section U-shaped and the light source 3 with associated versions and ballasts. In addition, the elements of the parallel link system 21, which are connected at their other ends to the swing-away profile frame part 10, are preferably hinged to this carrier frame 23.

The profile frame part 10 surrounds and carries the room-side light exit surface 7, which may for example consist of a glass and / or prism plate or a suitable plastic material.

In addition to the main light region realized by the direct light exit surface 7 and the lateral light exit region located on the ceiling or wall side, further light sources can be used, as already removed by the blanking profile web 11, as already described in connection with the blanking profile web based on Fig. 1 was explained.

Fig. 6 shows an internal structure with the embodiment according to Fig. 5 Comparable luminaire design, but in a built-in version.

The lamp is in the open state, in which the bulbs are freely accessible, represented, i. the profile frame part 10 with the room-side direct light exit surface 7 and the Ausblend profile web 11 is pivoted about the articulated on the support frame 23 parallel link system 21 with associated tension spring 22. The tension spring 22 supports the return movement and holds above all the profile frame part in the closed state of the lamp in a defined stop position relative to the support frame 23 and the angled end of the housing peripheral wall. 9

In the closed state of the lamp, the outer space region 5, which is located between the housing peripheral wall 9 and the inclined outer wall 4, applied via the lateral exit area 24 with light, so that in turn present a main light area and this frame-surrounding Akzentlichtbereich. Also in this case, the outer space area 5 still further light sources, be assigned in particular line-shaped LED's, these additional light sources are in turn withdrawn by the blanking profile web 11 a direct view.

The single part representation after Fig. 7 shows the basic structure of an embodiment of a lamp, as for example already based on the Fig. 5 has been explained.

An essential advantage of the basic structure of such a lamp consists in the use of the support frame 23, which accommodates all essential functional components, in particular bulbs and electronic accessories as part of a preassembled unit and - as based on Fig. 6 shown - serves as a coupling unit for a parallel link system, so that after connecting, in particular screwing the support frame 23 to the housing 9 is a basic unit, with the then on the one hand, the profile frame part 10 via the parallel link system can be easily connected and on the other hand, the lateral light exit region 24 forming upper light frame can be connected via the top wall 25 by clamping.

This simple basic structure is easy to assemble and maintain and can be realized in the form of a sheet steel construction or using extruded profile parts.

LIST OF REFERENCE NUMBERS

1

Flat space housing

2

inner space

3

Lamp

4

outer wall

5

Outdoor area

6

Lamp

7

room-side direct light exit surface

8th

covering areas

9

Housing peripheral wall

10

Professional frame part

11

Fade-profile web

12

ballast

13

beam web

14

beam web

15

intermediate wall

16

ceiling-side direct light exit surface

17

wells

18

peripheral land

19

Flat frame element

20

spotlight

21

Parallel linkage system

22

mainspring

23

support frame

24

lateral light exit area

25

top wall

Claims (10)

Area light, in particular multi-functional area light with a flat housing (1) for receiving a plurality of light sources (3) arranged in particular in a plane and at least one room side, forming a main light area direct light exit surface (7),
characterized,
in that the housing (1) delimiting the direct light exit surface (7) is enclosed by an outer space region (5), in particular for receiving light sources (6), which is separated from the interior (2) of the housing (1) and enclosing the main light region , frame-shaped, optically separated from the main light area appearing accent light area forms. A surface light according to claim 1,
characterized,
in that the interior (2) of the housing (1) is separated from the exterior area (5) in a light-tight manner and the exterior space area (5) is spatially separated from the peripheral wall (9) of the housing (1) and supported by the housing (1) is formed at least substantially over the housing height extending outer wall (4). A surface light according to claim 1,
characterized ,
that associated with the central main light region on the one hand and the frame-shaped flare light region on the other lighting means (3, 6) are of different, in particular adjustable color temperature and / or brightness and as luminous means (3, 6) for the main light and the accent light region combinations of fluorescent lamps, LED's and / or TC-L lamps are used. A surface light according to claim 1,
characterized ,
in that the illuminants (6) of the frame-shaped accent light region are hidden by a circumferential profile web (11) provided on the room side, the free end of which extends from the housing (1) into the outer space region (5). A surface light according to claim 1,
characterized ,
in that the illuminant (3) associated with the interior space (2) and required electronic ballasts (12) are arranged in a preassemblable support frame (23) which can be connected to the housing (1). Illuminant according to claim 1,
characterized,
in that the flat-shaped housing (1) in particular and the outer space area (5) are formed by two interlocking, peripherally closed profile parts (9, 10), wherein a profile part (9) which defines the ceiling-side, at least substantially the housing height, curves in its upper area trained, at least up to the lower edge of the housing extending profile wall (4) is formed and the room-side profile part (10) on the one hand in the direction of the curved profile wall (4) extending Ausblend profile web (11) and on the other hand internally a support web (13) for supporting a translucent direct light exit surface (7), which closes the housing (1) room side. Illuminant according to one of the preceding claims,
characterized ,
that the interior (2) of the housing is closed on the ceiling side by means of a light-tight or at least partly translucent cover surface (8) on a carrier web (14) of the cover-side profile part (9) is supported and / or below the ceiling-side cover surface (8) is a strip-shaped circumferential side light exit area (24) is provided. Illuminant according to one of the preceding claims,
characterized ,
that the room-side housing part with the associated direct light exit surface (7) with respect to the cover-side housing part, in particular with respect to the support frame (23) via a preferably as parallel link system (21) formed on the ceiling-side housing part or on the support frame hinged lever assembly is pivotally mounted against a spring force against pivoting. Illuminant according to claim 1,
characterized ,
that the interior (2) of the housing (1) by a particular on both sides reflective formed intermediate wall (15) in a is divided upper and a lower illuminant space and both bulbs spaces are limited to the outside by direct light exit surfaces (7, 16), wherein the intermediate wall (15) has a meandering structure and the lighting means (3) alternately in the upwardly or downwardly open recesses (17) the intermediate wall (15) are arranged. Illuminant according to one of the preceding claims,
characterized ,
that the interior (2) of the housing (1) for receiving a plurality of radiators (20), particularly pivotal radiators is formed and the direct light exit surfaces (7, 16) of Mikroprismatik- or diffuser / opal material or combinations thereof.

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