DE202010011239U1 - lighting device - Google Patents

Abstract

Lighting device for illuminating a room with at least one working zone comprising at least a first light source or a number of first bulbs, which (s) radiates a predominant amount of light indirectly from the light up to the ceiling and emit a lower proportion of light directly and via light directing elements in the same lighting device, characterized in that the second light source (21, 33, 44, 48) directed light directly into the Spaces into space, from the lighting device (10, 20, 30, 40, 50) starting at an inclined angle and / or vertically upwards in the direction of the ceiling (28) (indirect light) and / or starting from the lighting device in one inclined angle and / or perpendicular to u nts (direct light).

Description

The The present invention relates to a lighting device for Lighting a room with at least one working zone comprising at least a first lighting means or a number of first lighting means, in particular at least one fluorescent lamp, which) predominantly Part of the light indirectly from the luminaire upwards to the ceiling radiates or radiate and a lower contrast Light component direct and directed over light directing elements radiates downward or radiate, as well as continue to include at least one second different kind of lighting means, in particular at least one LED, in the same lighting device.

A lighting device in the conventional bulbs, z. As fluorescent lamps are used, wherein the majority of the light emitted by these light is radiated upward to the ceiling, is for example in the DE 103 35 748 A1 described. In this known luminaire is a ceiling pendant light and the predominant upward light emission is achieved in that the lamp housing is closed below this bulb and directed over Lichtleitbleche the light emitted by the conventional light predominantly upwards. Such lights are used because of your Entblendungseigenschaften since the luminance is kept low directly below the light and the light directed downwards exits only in very specific angular ranges, so that a viewer blinded in a work zone neither direct insight into the lamp of the lamp is still the so-called reflected glare on screen surfaces or documents with glossy surface occurs. The indirect light component emitted upward is reflected on the ceiling and contributes to brightening the room as diffused light.

In a further development of the aforementioned lamp, which in the DE 10 2005 005 454 A1 is described, it is proposed to use in addition to the conventional first lamp another light source, which may be LEDs, this further light source feeds light into an upper transparent plate-shaped cover. From this plate-shaped cover light is coupled via a raster printing as stray light and emitted over the surface of the plate-shaped cover. This leads to an optical brightening of the plate-shaped cover for the viewer. However, the amount of light emitted by the other bulbs is comparatively low and is not directed radiated, so it is at most an additional effect lighting. In addition, this proportion of light has no range and does not shine into the room, for example, in the case of a light suspended near a window.

in principle are from the prior art and lights with fluorescent lamps known, which have an asymmetric light emission. These For example, a conventional grid have, on which an additional mirror plugged is or becomes, for example, an asymmetrical mirror grid used to achieve the asymmetric light distribution. If For example, in a room a pendant lamp in the vicinity of the window hangs, is such asymmetric radiation desired to move the light in the room toward to broadcast to a work zone. If to traditional Luminaires are used, but exists at greater room depths the problem that hung near the window Light does not radiate far enough into the room, so that the Requirements of the standard to the minimum achievable illuminance levels not be met. It is therefore customary in these cases so far additionally a second parallel luminaire (or luminaire row) to arrange further in the room. In this solution, of course, increases necessary energy for lighting the room as well as the cost of the installation.

Here uses the present invention. Object of the present invention it is a lighting device of the type mentioned to provide, which also in the mentioned Use cases a standard-compliant lighting of the work area guaranteed and a higher energetic Achieved efficiency.

The Solution of this problem provides an inventive Lighting device of the type mentioned above with the characterizing features of the main claim.

According to the invention provided that the second different type of lighting directed Emits light directly into the room, from the lighting device starting at an inclined angle and / or vertically upwards in the direction of the ceiling (indirect light) and / or of the Lighting device starting at an inclined angle and / or vertically downwards (direct light).

According to the invention, the photometric idea consists in the additional use of other types of illuminants (referred to herein as "second" illuminants) in the same illumination device, so to speak, "two levels of illumination", each with direct light output to the utility plane (working zone) and indirect light exit with diversion to create the ceiling or another deflecting element. The first lighting level usually uses fluorescent lamps, for example, efficient fluorescent lamps of the latest generation and these provide sufficient light intensity in the direct workplace area and the basic brightness in the room depth. The second illumination plane preferably generates the illuminance required in the spatial depth by means of indirectly and / or directly emitting LEDs, which are in particular separately switchable, so that even greater depths of space are illuminated when a single luminaire is arranged in a room, for example close to the window. However, the switching on of the second lighting means can be done as required, resulting in energy savings and a much more flexible solution compared to the arrangement of a second light in the same room.

Prefers is provided according to a development of the invention, in that at least one light-directing element is a respect a vertical plane, in particular with respect to a vertical plane Longitudinal plane of the lighting device, asymmetric light radiation the LEDs generated. The second bulbs can then For example, in asymmetric radiation one near the window arranged light the opposite vertical surface illuminate a wall indirectly and contribute to brightening the room. An adaptation to the respective room heights and depths can, for example, via the light control of the second light source (LEDs) be done so that, as needed, a narrow or wide light distribution is reached. The LEDs can when dispensing a share in direct light according to need variably aligned become, for example, over joints, a ball head technique or a gimbal attachment.

These Lighting technology is particularly suitable for suspended ceiling luminaires Floor lamps and wall lights are considered, in the case of a purely direct Radiant variant, however, the principle can also be at Recessed ceiling luminaires realize. It can, for example several lighting units of the invention Arranged in the longitudinal direction one behind the other, whereby the individual units are also connected to each other can, for example, via modular fittings or fasteners so that illumination systems result, in which the lighting device are arranged in rows.

The outer one Design of the lights according to the invention can over Wide ranges vary, depending on the type of luminaire and the purpose of use. For example, for the construction of the luminaire housing Profiles of aluminum or plastic are used or others mechanically formable materials suitable for luminaire construction.

Of the Floor plan of a single lighting device, for example be rectangular, in particular elongated rectangular, wherein the Invention is not limited to this plan shape is. For an elongated rectangular plan shape the first bulbs, that is the fluorescent lamps, preferably arranged in the housing longitudinal direction. For the arrangement of the second lighting means, in particular The LEDs are in this case preferably two variants. These be either along the long side of the lamp housing arranged next to the fluorescent lamps or in a head-side Area behind or in front of the fluorescent lamps. It also happens to the arrangement of the lighting devices according to the invention in the room to be illuminated. There is basically here two preferred variants: Either the lighting devices are hung parallel to the window of the room and point then preferably an asymmetric radiation from one longitudinal side Starting in the room on. Or you arrange the lighting devices perpendicular to the window of the room, with the LEDs then preferred in a head-end area on the side facing the room the lamp are arranged and thus the second light source from Blast the end of the luminaire out into the room.

Preferably is directed by the LEDs direct light directed so that it opens the working zone falls. You can, for example, for Generating the output of directed light to the LEDs light steering elements assign, in particular at least one lens or a reflector or a lens or reflector system. Additionally or Alternatively, the LEDs may, for example, indirect light so that it falls on a wall of the room and from there as a scattered light contributes to the brightening of the room.

The preferred asymmetric light emission of the first used Illuminant with respect to a vertical longitudinal center plane the lighting device, with respect to that of the first lighting means Upwardly emitted indirect light component and / or the from the first bulb down radiated direct Part of light, you can generate, for example, by the first Bulbs or the first bulbs an asymmetric parabolic grid, an asymmetric reflector or an asymmetric prismatic lens or microprism disk.

According to a possible preferred variant of the solution, in a lighting device according to the invention, daylight is used to assist, for which purpose the lighting device has, for example, a sensor module comprising at least one daylight sensor and a control ereinrichtung for daylight-dependent control of the brightness of the first and / or the second lighting means. In particular, the second light source can be switched on, for example, even if not enough light in the depth direction enters the room. This results in energy savings, wherein the functionality of the lamp with respect to the first lighting means and the lighting of the work zone can be maintained, even if the second lighting means are turned off.

Farther the lighting device may comprise a presence sensor, and a control device for controlling the brightness and / or for switching on and off of the first and / or the second lighting means. The first and / or second bulbs, which are preferred from each other independently switchable, can thus each be turned on when a person is in the work zone or enter the room.

It has already been mentioned that in lighting fixtures of the type according to the invention the predominant Proportion of the light emitted by the first bulbs indirectly emitted from the light upwards. Measurements and experiments have shown that while a light distribution particularly advantageous is, in the upward light emitted indirect light preferably between about 60% and about 80% of the total of the is the first and the second bulbs emitted light. This indirect light component can also be up to 90%, for example. of the total emitted by the lamp light.

Farther has proven to be advantageous if, for example, until to about 30% of the emitted from the lighting device upwards emitted indirect light component of the second or the second bulbs becomes.

The The features mentioned in the subclaims relate to preferred Further developments of the task solution according to the invention. Further advantages of the invention will become apparent from the following Detailed description.

following the present invention is based on embodiments with reference to the accompanying drawings closer described.

there demonstrate:

1 a schematic representation of the emitted light components of a lighting device according to the invention in the view from the front side;

2 a schematic representation of the lamp from the longitudinal side, with only the direct light component is shown;

3 a schematic representation of the floor plan of a standard room according to DIN V 18599 which is used to determine the required illuminance levels;

4 a schematically simplified view of a first variant of a lighting device according to the invention with asymmetric radiation, which is designed as a ceiling pendant light;

5 a plan view with arrangement of two ceiling pendant lights of the type of 4 in a room;

6 a corresponding vertical section through the space of 5 seen in the direction of the window;

7 a schematically simplified representation of a second variant of a lighting device according to the invention, which is designed as a floor lamp;

8th a schematically simplified view of a cross section through the lamp of 7 ;

9 a schematic representation of the output of a lamp according to a further variant of the invention light components, wherein one sees the lamp from the longitudinal side;

10 a schematically simplified perspective view of a floor lamp according to another variant of the invention;

11 an enlarged longitudinal sectional view through the upper portion of the lamp of 10 ;

12 a simplified schematic side view of a ceiling pendant light according to another variant of the invention;

13 an enlarged partial view of the lamp according to 12 seen from above;

14 an enlarged longitudinal section through the left part of the lamp of 12 ;

15 a bottom view of the left part of the light of 12 ;

16 a further enlarged schematic sectional view of a section of the in 14 illustrated light.

The following is first on the 1 to 3 Reference is made and on the basis of this, the general lighting technology principle of the invention and the requirements for lighting in a standard space will be explained first. In 1 is a lighting device according to the invention 10 shown from the front side. It may, for example, be a luminaire with an elongated rectangular plan, in which case the front side 11 the narrow side is. Essentially, these three light components are emitted, namely via the first lighting means, namely fluorescent lamps, a predominantly indirect light component 12 towards the top and at the same time via these first bulbs a lower directional direct light component 13 downwards. In addition, second bulbs are provided (the bulbs are not shown here), which in this case, a further indirect light component 14 to give up. In 1 you can see that the indirect light component 12 and the direct light component 13 be emitted asymmetrically to a longitudinal side of the lamp down. The view on the long side 15 the luminaire according to 2 clarifies that the direct light component 13 , which is emitted from the first bulbs downward, directed from the outside to the center falls, so as to illuminate a workplace glare-free.

3 shows a standard room according to DIN V 18599 in the floor plan. It is a working zone to be illuminated 16 presented with two workstations, where, for example, two people sitting opposite each other. The space is rectangular and has dimensions of 4.80 length, the long side wall is with 17 and 3.60 m in width, the transverse wall is with 18 designated. According to the said standard, the minimum illuminance must be in the working zone 16 500 lx on the workplace. As a rule, the work zone 16 turned closer to a window, which is located on the transverse wall 18 would be left in the drawing. In the areas behind the work zone 16 the illuminance must still be 200 lx or 300 lx, which means that the light levels of the lighting devices must be designed so that they emit light far enough into the room depth, so that not only the work area is illuminated without glare, but also behind the Work zone still the aforementioned illuminance levels can be achieved. These general explanations serve to better understand the invention, which will now be explained in more detail below with reference to more concrete embodiments.

4 shows a perspective view of an exemplary ceiling pendant luminaire according to the invention 20 with asymmetrical radiation. The lamp 20 is rectangular in plan and has an elongated luminaire housing. The fluorescent lamp (or possibly a plurality of fluorescent lamps) extends in the longitudinal direction of the housing. As you can see is a luminaire grid associated with the fluorescent lamps 19 arranged eccentrically in the housing of the lamp. The radiation of the direct and the indirect light component is therefore carried out asymmetrically predominantly to one side with respect to the longitudinal center plane through the luminaire housing, as shown schematically in FIG 1 is shown, and in fact to the longitudinal side of the lamp, of which the light grid 19 is further away, that is in the drawing according to 4 to the left. Front side at the respective ends of the lamp housing are beyond the lighting grid 19 each LEDs 21 arranged as additional bulbs that can radiate light indirectly and directly, so up and down. Over the head end to the front end 22 subsequent coupling and sensor modules 23 can be a lighting device of in 4 shown in the longitudinal direction can be extended by more similarly constructed lighting units. At this coupling module 23 can also sensors 24 be accommodated for a daylight-dependent brightness control of the lamps and presence sensors or motion detectors. Lights of in 4 can be hung in a room, for example, as shown in 5 is shown.

As you can see, the lights are hanging 20 in the room near the window and parallel to the window 25 , There are two lights 20 hung side by side, which extend in the longitudinal direction and extend in total over the entire width of the room. The work zone lies beyond the luminaires in the room approximately in the middle of the room and is illuminated due to the asymmetrical radiation of the lights. As well as the fluorescent lamps of the luminaires, the LEDs also emit light into the room when switched on, ie away from the window in the direction of the opposite wall 27 in which is the door 26 located.

6 shows the suspension situation of the two lights 20 from 5 in the view, looking towards the window 25 looks. You can see that these are suspended ceiling luminaires, with the appropriate distance below the ceiling 28 are suspended, the sample room has a comparatively large ceiling height. The radiation of the direct light downwards takes place in a crosswise direction in each case in the longitudinal direction from outside to inside, as in the schematic diagram according to FIG 2 is hinted at, but at the same time because of the asymmetric radiation into the room as in 5 indicated by the arrows.

Another embodiment of a working according to the invention lighting principle floor lamp 30 is in 7 shown. Also, this floor lamp can be in a room like him in 5 Shown is parallel to the window and placed near the window and then radiate asymmetrically into the room. The light emission is predominantly asymmetric to a longitudinal side of the floor lamp 30 out. In the embodiment according to 7 is the luminaire housing 29 the floor lamp 30 again elongated and approximately rectangular in plan. The floor lamp 30 has a lamp stand 31 , from which a standpipe 32 perpendicular leads upwards, at the upper end of the luminaire housing 29 is arranged, which of the standpipe 32 will be carried.

The second bulbs 33 are attached to this floor lamp along a long side as you also off 8th Can recognize the light 30 from 7 in cross section through the upper area shows a little enlarged. This allows these second bulbs 33 directed their light towards the desired side down, in this case as direct light down as indicated by the light cone in 8th is indicated. A sensor 35 for the determination of the brightness or the presence of a person in the working zone, for example, may be attached to the underside of the luminaire. The indirect light (upwards) becomes with this floor lamp 30 over the first bulbs 34 (Fluorescent lamps) produced, in the example of which three are arranged side by side in parallel in the longitudinal direction of the lamp housing. To produce the asymmetric radiation towards one side of the luminaire, the fluorescent lamps are 34 each asymmetric reflectors 36 assigned. The indirect light component can with this lamp 30 exclusively from the first bulbs 34 be generated so that the luminaire housing bottom side - except for the lateral light emission for the LEDs 33 - can be closed. For example, you can achieve a ratio of 90% indirect and only 10% direct light emission.

Another schematic sketch for the light output of a lighting device according to the invention 40 is in 9 shown. This luminaire shows another variant of the illumination principle according to the invention, which is suitable for a different installation situation or suspension situation (for pendant luminaires). This light 40 you can in a room of the kind described above (see 3 and 5 ) perpendicular to the window instead of parallel to the window. In principle, there are three light components that are in 9 outlined, namely once the indirect light component 37 , which is emitted by the first bulbs (fluorescent lamps) upwards. Furthermore, these first bulbs also give a direct light component 38 directed downwards. Finally, LEDs are again provided as the second light-emitting means which, for example, can be arranged in the region of a longitudinal end of the elongated luminaire and which in this example has an indirect light component 39 to give up, how to get in 9 sees, is radiated asymmetrically into the room, when the lamp is arranged perpendicular to the window. The leds are then located at the end of the elongated luminaire facing away from the window. This lamp with the in 9 sketched radiation can for example be a floor lamp as in the 10 and 11 is shown.

By comparing the 10 With 7 you realize that at 10 the luminaire housing 41 on the standpipe 32 not aligned transversely, but longitudinally aligned rests, that is, in the elongated luminaire housing 41 is an end on the standpipe 32 mounted so that the luminaire housing protrudes from its base attachment point starting. This projection extends in the above-described installation situation from the window side into the room. The arrangement of the lamp results from the enlarged longitudinal section through the lamp housing 41 according to 11 , The first bulbs 42 (Fluorescent lamps) in turn extend in the longitudinal direction of the housing, but because of the different arrangement of the lamp in the room so now different than at 7 into the room. It can be arranged parallel to each other depending on the dimensions of the luminaire and required power several fluorescent lamps, which can be seen in the sectional view 11 can not recognize. For the exit of the indirect light (see 37 in 9 ) upwards may be provided light-directing elements, but it can also be provided for example only an upper transparent cover. For direct light emission of the first bulbs 42 down (see 38 in 9 ) can, for example, a prismatic disk as light-directing element 43 , z. As a micro prism disc, be provided which provides a suitable glare of the direct light component.

The second bulbs 44 (LEDs) are in this case in front of the first bulbs 42 arranged at the front end of the housing and thus on the side facing the room. These second bulbs 44 can each reflectors 45 be assigned, as in the enlarged view according to 16 is better recognizable. By such asymmetric reflectors can in turn achieve a directional radiation into the room. The light is thus from the second bulbs 44 directed at the front end of the lamp housing emitted indirectly upwards (see light 39 in 9 ). For example, on the underside of the lamp housing 41 can a sensor 46 which fulfills the functions mentioned above (daylight-dependent and / or presence-dependent control).

12 shows a ceiling pendant light 50 , which works according to a similar photometric principle, as it previously based on the floor lamp 40 was described. Here is the light 50 be suspended in a room so that it is aligned perpendicular to a window. The light is in 12 shown so that you look at the long side. The first bulbs 47 are again elongated fluorescent lamps which extend in the longitudinal direction of the housing, so in the drawing from right to left or from left to right. The first bulbs 47 return indirect light upwards and direct light downwards. The second bulbs 48 For example, in an end-side separate area 49 be housed behind or in front of the first light source, ie in a head-side area at a longitudinal end of the lamp. At the second bulbs 48 In turn, these are LEDs which, as in the previously described exemplary embodiment, emit their light asymmetrically, predominantly in the direction away from the luminaire, by using, for example, suitable reflectors, as indicated by arrows in FIG 12 is indicated. With the above suspension of the lamp in a room near the window and perpendicular to the window, thus the light of the LEDs is emitted deeper into the room inside. The training of reflectors 45 may for example be as in the enlarged view according to 16 is shown, the LEDs are there with 44 designated and correspond to the LEDs 48 in 12 , One recognizes in 16 better the asymmetrical shape of the reflectors 45 with a longer thigh on one side 47a have, which is inclined at a shallower angle to the horizontal than the shorter leg 51 on the other hand, which is steep or even vertical as in the embodiment. Every LED 44 / 48 is preferably such a reflector 45 assigned, the LED 44 even tilted can be arranged as in the drawing 16 so that the asymmetrical radiation predominantly results towards one side and thus away from the longitudinal side of the luminaire.

13 shows an enlarged view of the end-side area 49 the light of 12 in the supervision. You can see the ends of the first bulbs serving fluorescent lamps 47 , It can also be seen that several fluorescent lamps 47 For example, two or three may be next to each other. In the end area 49 In addition to the LEDs, you can also use ECUs 52 , Sensors, ballasts for the lamps and the like are housed. 14 shows the light 50 according to 12 and 13 again in an enlarged section through the end area 49 , In 14 is also a presence and daylight sensor 53 recognizable in the end area on the underside of the luminaire. The light emission of the light emitted by the LEDs light can only upwards, so indirectly, done (see also 39 9 )

15 shows the same area of the lamp 50 as in 13 and 14 but from the bottom. As you can see, the light exit opening is covered there, for example, by a light-directing prismatic lens 54 For direct directed and glare-free light emission from the first bulbs 47 emitted light downwards and thus ensures glare-free at the workplace. In 15 can be seen further that the lamp in plan is rectangular (with only the left part is shown) and that on both sides in the longitudinal direction next to the light exit opening for the first bulb each frame elements 55 run, which has a rectangular light exit opening (prismatic disc 54 ) on both sides.

LIST OF REFERENCE NUMBERS

10

lighting device

11

front

12

indirect light component

13

direct light component

14

indirect light component

15

long side

16

work zone

17

longitudinal wall

18

partition

19

louver

20

Suspended luminaires

21

LEDs

22

frontal The End

23

sensor module

24

sensors

25

window

26

door

27

wall

28

ceiling

29

luminaire housing

30

floor lamp

31

the lamp

32

standpipe

33

second Lamp

34

first Lamp

35

sensor

36

reflectors

37

indirect light component

38

direct light component

39

indirect light component

40

lighting device

41

luminaire housing

42

first Lamp

43

prism Screen

44

second Lamps / LEDs

45

reflectors

46

sensor

47

first Lamp

47a

longer leg

48

LEDs

49

end-side Area

50

lamp

51

shorter leg

52

ECUs

53

Daylight sensor

54

prism Screen

55

frame elements

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10335748 A1 [0002]
• DE 102005005454 A1 [0003]

Cited non-patent literature

• - DIN V 18599 [0024]
• - DIN V 18599 [0039]

Claims (17)

Lighting device for illuminating a room with at least one working zone comprising at least a first light source or a number of first bulbs, which (s) radiates a predominant amount of light indirectly from the light up to the ceiling and emit a lower proportion of light directly and via light directing elements directionally radiates down or radiate, and further comprising at least a second different kind of light source, in particular at least one LED, in the same lighting device, characterized in that the second different type of light bulb ( 21 . 33 . 44 . 48 ) emits directed light directly into the room, from the lighting device ( 10 . 20 . 30 . 40 . 50 ) starting at an inclined angle and / or vertically upward in the direction of the ceiling ( 28 ) (indirect light) and / or from the lighting device at an inclined angle and / or vertically downwards (direct light). Lighting device according to claim 1, characterized in that as a second light source ( 21 . 33 . 44 . 48 ) LEDs directed direct light directed so that it is on the working zone ( 16 ) falls. Lighting device according to claim 1 or 2, characterized in that LEDs used as the second illuminant ( 21 . 33 . 44 . 48 ) emit direct light or indirect light so that it can be placed on a wall ( 27 ) and / or ceiling and / or use level of the room falls. Lighting device according to one of claims 1 to 3, characterized in that the one or more second lighting means ( 21 . 33 . 44 . 48 ) are assigned to generate the emission of directed light light-guiding elements, in particular at least one lens or a reflector ( 45 ) or a lens or reflector system. Lighting device according to claim 4, characterized in that at least one light-guiding element ( 19 . 36 . 45 ) with respect to a vertical plane, in particular with respect to a vertical longitudinal center plane of the illumination device, asymmetrical light irradiation of the first illumination means ( 34 ) and / or the LEDs ( 44 . 48 ) generated. Lighting device according to one of claims 1 to 5, characterized in that it has an elongated light exit surface, the first lighting means or the first lighting means ( 34 ) extend in the longitudinal direction in the lamp housing and the lighting device ( 20 . 30 ) has an asymmetrical light emission with respect to a vertical longitudinal center plane, in which the indirect light component radiated upward from the first illuminant ( 12 ) and / or the direct light component radiated downwards from the first illuminant ( 13 ) is emitted predominantly to one side of the longitudinal center plane. Lighting device according to claim 6, characterized in that the first lighting means or the first lighting means an asymmetric parabolic grid ( 19 ) and / or an asymmetrical reflector and / or an asymmetrical prismatic disk or microprism disk for generating an asymmetrical light emission. Lighting device according to one of claims 6 or 7, characterized in that the first luminous means or the first light emitting means an asymmetric parabolic louvre which directs the light component directed directly downwards. 19 ) and / or an asymmetrical reflector and / or an asymmetric prismatic disk or microprism disk for generating an asymmetrical direct light emission. Lighting device according to one of claims 1 to 8, characterized in that this a sensor module ( 23 ) comprising at least one daylight sensor ( 24 ) and a control device for daylight-dependent control of the brightness of the first and / or the second lighting means ( 21 ). Lighting device according to one of claims 1 to 9, characterized in that it comprises a presence sensor ( 24 ) and a control device for controlling the brightness and / or for switching on and off the first and / or the second lighting means ( 21 ). Lighting device according to one of claims 1 to 10, characterized in that the second or the second lighting means ( 33 Off-center on or along a longitudinal side of the elongated luminaire housing of the lighting device ( 30 ) next to the first illuminant (s) ( 34 ) are arranged, wherein the one or more lighting means ( 34 ) extends in the longitudinal direction of the lamp housing. Lighting device according to one of claims 1 to 11, characterized in that the one or more second lighting means ( 44 ) in the luminaire housing ( 41 ) of the lighting device ( 40 ) at the head before or after the first illuminant (s) ( 42 ), wherein the one or more first lighting means extends in the longitudinal direction of the lamp housing. Lighting device according to one of claims 1 to 12, characterized in that this as a ceiling pendant lamp ( 20 . 50 ), Wall or floor lamp ( 30 . 40 ) is formed and preferably has an approximately rectangular elongated luminaire housing. Lighting device according to one of claims 1 to 13, characterized in that the upwardly emitted by this indirect light component ( 12 . 14 ) is more than 60%, preferably more than 70%, particularly preferably at least about 80% of the total light emitted by the first and the second light sources. Lighting device according to one of claims 1 to 14, characterized in that up to about 30% of the upwardly emitted by this indirect light component ( 12 . 14 ) is emitted from the second illuminant or bulbs. Lighting device according to one of the claims 1 to 15, characterized in that the first and the second Lamps each independently switchable and / or are controllable. Lighting device according to one of the claims 2 to 16, characterized in that the second lighting means for the orientation of the share issued by them in direct light via joints are aligned.