DE202008008977U1 - Lighting fixture, in particular in the form of a rescue sign luminaire - Google Patents

Abstract

Lighting body (1) with a box-like base body (3) in which a lighting means (5) for direct emission through a lighting window (7) sits, and with a footprint (13), characterized in that the footprint (13) has a telescopic projection surface (13) 15) parallel to the illumination window (7), which is assignable with a diffuser (17).

Description

The The present invention relates to a lighting fixture. which can also be used as a escape sign light, the continue designed as a mountable set.

State of the art

The DE 20 2006 014 352 U1 (Owner: Zumtobel Lightning GmbH, filing date: 19.09.2006), also under the EP publication number EP 1 845 396 A1 is published, describes two mutually similar embodiments of a escape sign light, which optionally equipped with a second light source for easier handling a plug-in pivot frame to a connection between a base support and a cover. The document describes very pictorially many interesting aspects of escape sign luminaires. The description serves for the general definition of escape sign luminaires. A flat stretched escape sign light can be plugged together with a second, mirror-image to be arranged first escape sign light to form a signposted from two sides lamp. A light exit plate with a corresponding icon is held by a groove-like frame.

Requirements for the lighting system in the planning phase can be found in the standard work "Emergency Lighting" by Bruno Weis (ISBN 3-7905-0434-3) remove. On the basis of such specifications, the theoretical design of a building can be completed.

The regular procedure in the design of publicly accessible buildings or public buildings that comply with relevant standards, such as VDE 0108 or the DIN 4844 , Rescue route and escape route signage and illuminations should show repeatedly shows significant differences between the planning design and the actual implementation options for the executing electrical installers. Further framework conditions are the DIN EN 1838 refer to. So occasionally existing lighting conditions are not properly assessed, escape route lights and escape route lights should be installed according to planning specifications in places that are already occupied elsewhere, where the supply lines are not brought to the planned extent or are not as visible by external circumstances, as after Studying the architect's plan is to assume. Often the assembling electrical installers appear on the construction site with a set for the construction project set of escape sign lights that are not completely to assemble, but must be partially replaced again, because some planned mounting positions can not be achieved with the existing lights or the lights are on the not to be installed.

aggravating In addition, numerous lights are offered that actually due to detailed explanations only after one Order to be made. These lights are then often from a replacement, so that the electrician numerous Lights must be in its inventory, without them again in the short term to install.

Can be inserted in frame signs for indicating where the output of a building is, for example, from US Pat. No. 6,240,665 B1 (Applicant: JJI Lighting Group, filing date: 05.01.1999). In order to offer lights that are to be aesthetically pleasing, two flat frames according to the description braced by screws and brackets against each other, between which the corresponding sign is placed.

If the lighting equipment is to be used as emergency exit luminaires, the power supply must be ensured. One way of ensuring the energy supply can be DE 10 2007 062 999.2 (Applicant: RP-Technik e.K., filing date: 21.12.2007), which is referred to by the term "Mischbetriebsweise" in professional circles. The blending mode requires additional electronic components, so-called blended mode components, which can detect whether the lighting means connected to them should be turned on or off. LEDs can be used as illumination means. LEDs are to be supplied in particular with lower voltages, so that the supply voltage, for. B. 232 V or 220 V, to a lower level, such as 12 V or 5 V to reduce. Alternatively, 8 W fluorescent tubes can be used. Both illuminants can be used simultaneously. Fluorescent tubes need ballasts.

invention description

The Conspicuousness of escape signs caused by the lighting The escape sign is to evoke become relevant through the choice of color, the brightness, the size, the shape, the recognition distance, the character height, the illumination factor, the illuminance, a uniformity factor and the contrast ratio is determined. For example, the uniformity factor To what extent are individual areas of a pictogram stronger may be illuminated as other parts of the pictogram. All these requirements must be met in accordance with the standard be. The partly contradictory requirements acc. of the referred to above and beyond further relevant Standards must be met in a good compromise.

Electric installation companies have the desire, as far as possible escape sign lights for be able to maintain their materials management and still as many assembly requirements as possible with the existing ones To be able to meet luminaires. This dominates in particular in industrial buildings and functional buildings as badly lit Discotheques the desire, the normungsgerechte escape sign light to install with a manageable effort. The economic Effort should be kept within acceptable limits, as should the production and the assembly times.

The inventive object is achieved by a lighting fixture solved according to main claim. Advantageous developments can be found in the dependent claims.

Of the Lighting fixture according to the invention can be used as a escape sign light. Alternatively leaves the lighting fixture also put together so that he is a classic lighting fixture like a plasterer is installable lamp. The lamp or the lighting fixture Can be retracted by ceiling or wall mounting in the ceiling or the wall to assemble, with appropriate choice of covers a pure Escape route lighting or regular lighting. The lighting fixture can be at appropriate Use frame selection as a cavity mounting unit. The lighting fixture can be in another embodiment as a surface mounting unit use. The lighting fixture can be included use a further assembly design as a plaster mounting unit. The main body is for all uses and Configurations equal. By exchanging only a few parts, such as a frame, gets out of the lighting fixture For flush mounting a surface-mounted lighting fixture.

in the The meaning of the present invention is a telescopic Area, if the distance of the area or the level opposite to its reference point, such as the illumination window is to be spaced. The distance is adjustable.

Under Use of a certain opacity can be punctual Light sources, such as LEDs, high-performance SMD LEDs or fluorescent tubes, be widened by one or more diffusers. For this purpose has the Projection surface or the light path to the projection surface a diffuser. The LEDs can be used with wide angle radiation be equipped. Often, LEDs have a maximum beam angle or screen coverage of 30 °. Wide angle emissions Start beyond the 30 ° and can over 70 ° range. The change carrier or the pictograms have a certain translucency on the other side. Through the interplay between chosen opacity and translucency, in particular in different layers, the standard Contrast requirements and brightness requirements despite the use from a few sources of light, z. Less than five light sources, in particular, only three light sources can be achieved. The energy turnover sinks in the lighting fixture. There is less waste heat.

Of the Lighting fixture has a box-like body. On one side of the box or box-like body there is a lighting device that follows from inside the lighting fixture radiates outside. The illuminant radiates immediately from. It is therefore a direct lighting instead of a indirect lighting. The main body is a predominant one closed box. The main body has a lighting window. Behind the lighting window sits the lighting means. The Illumination window is so recessed that a nearly uniform Surface arises. Removed from the main body there is a footprint. The footprint is a telescopic projection screen. The projection screen runs parallel to the orientation of the illumination window. Illumination window and projection surface are in different Layers that are both parallel to each other. The projection screen can be covered with a diffuser. The diffuser ensures a wider expansion and radiation of the light or the individual Light beams.

The various configurations of the lighting fixture can be varied by a few simple steps. That's how it works a translucent exchange carrier in the footprint lay. The alternating carrier can be the carrier material be for a pictogram. There are preferably standard pictograms used for escape route signaling. The translucent exchange carrier has at the same time such a material property that he as well Can serve a diffuser. In an alternative embodiment, the Diffuser offset from the exchange carrier between the illumination means and exchange carrier be arranged. The diffuser has the Task to scatter the rays of light. The diffuser is so to speak the light scattering generator. The footprint itself is surrounded by a frame. The frame goes in its corner areas in spacers over. By means of the spacers can the distance of the footprint from the illumination window be set. If the lighting fixture as escape sign light or used as emergency lighting, so lets by adjusting the spacers the footprint so far away from the lighting means that a standardization Illumination of the exchange carrier or the pictogram in an embodiment is possible.

By further simple handles can be the design change the lighting fixture again. The lighting fixture can be designed so that the footprint through a light screen is formed. In a second embodiment is thus the lighting fixture as escape route lighting designed. Is the light screen made of a material that has a milky appearance, so can the individual No longer accurately identify the light source; ideally arises a general light area. In one embodiment can the light screen itself be pictogram free. The lighting fixture can preferably be used as escape route lighting. The footprint is also surrounded by a frame. The removable frames summarize the respective footprint one. The set that goes with the lighting fixture includes different frames that are interchanged be able to turn a escape sign light into a To make escape route lighting.

through Frame, which may differ from the other frames, can the lighting fixture be installed as Remodel flush-mounted lighting fixture.

Of the Flush frame can enclose a pictogram. The pictogram can be arranged on a separate removable carrier be. The respective footprint is in each frame so coordinated with each other, that each frame as a light umbrella carrier and can be used as a pictogram change carrier. The light opening of each frame is identical. In a Design of the flush-mounted frame over the previously means Spacers attached to fixed base frame become. In a further embodiment, the flush-mounted frame used instead of a projection screen frame.

Of the Lighting fixture is realized at least in two parts. The main body, which is designed box-like, can as be shaped octagonal box. The box has a deeper part and a flatter part. The deeper part, which also serves as a lid It is intended to designate various other components take. The lid is designed slightly larger as the carrier plate. Thus, the lid, the support plate embrace laterally. In the lid, the lighting window is incorporated. The illumination window is preferably located centrally. The boxy one Basic body can be opened easily, put together and bring in at its installation site.

On the underside of the lid are sleeve-like connections formed. In the sleeves can screw thread get cut. The sleeve-like connections and the lid are integrally connected, preferably made of the same material, namely an injection-moldable plastic. In the individual pods, which can also be called screw sleeves, may be screws for attaching and fixing electrical components be screwed. The lid is so deep that standard ballasts, Voltage transformers, monitoring components, mixed operating components or stress separation components can be attached. The Screw sleeves are available multiple times. The individual screw sleeves are arranged so that they are aligned parallel to the lighting means are. The lighting window is on both sides of each at least bordered by a number of screw sleeves. The others Components can be screwed to the lid - or on otherwise, how to connect well - to them with the Cover coherent or as a piece of the at z. B. remove the wall-mounted carrier plate.

The lighting fixture has provided openings. The openings are advantageously arranged in the box-shaped base body. Ideally, each part of the body, for example the carrier plate and the lid, has an opening. In the manufacturing process, the opening is only hinted at. Only by impulse action can the points to be breached, the single selected opening, be broken out. For this purpose, the individual breakthroughs have their edges perforated or weakened areas. In each component of the body several cable passages may be present. Under the influence of momentum, access to the interior of the basic body can be broken out of the basic body. Through the individual passages cable or other means can be pushed through. Thus, on site, during assembly, the lighting fixture can be adapted so that it can be connected to the local cable routing conditions. Due to the presence of a closed box-like base body, the lighting fixture can also be buried in a wall, regardless of whether it is a drywall or masonry wall. By using lighting means with low power consumption, for example, less than 8 watts, so little heat loss arises that the body can be designed to be closed. The cavity of the body is dimensioned so large that no heat accumulation leads to unnecessary aging. Escape sign lights in particular must be able to be operated for at least 3 hours. Due to the skillful choice of the individual lighting means and the clever arrangement of the lighting means below a lighting window, the minimum operating time for a lighting fixture according to the invention can be ensured.

Of the The main body still has individual shafts on. In one embodiment, the shafts are angled executed. Into the shafts can the Intervene spacers. The manholes lead the spacers and hold the spacers firmly. angled Shaft shapes ensure a more stable connection of the projection surface or their spacers. Should the main body without projection surface can be installed on the corresponding side, corners of the base body by additional caps dust-proof, ideally splash-proof, closed. The caps are rubbery. The caps take on the task of a Blanking plate.

Of the Body has on the inside more projections on. Individual projections are designed like rails. Other Projections are designed like dividers. In the safety lighting technology will be individual lighting fixtures, depending on the building design, as independent, supplied by batteries lighting fixtures executed sufficient safety lighting to ensure power supply collapse. The accumulators, Energy storage and other power sources must be vibration resistant can be arranged in the body. For this the rails or dividers can be used. The power supply components are on the rails or on the dividers fixed. This is part of the set of the lighting fixture a set of tension bands.

Of the Distance of the projection surface from the illumination window can be adjusted in different locking positions. The spacer or spacers of a single frame intervene in the shafts and find different Detent positions. For this purpose, the spacers snap hooks. A latching hook can be designed to have at least two different ones Detent positions or latch heights offers. At least one Latching position is along the vertical extent of the spacer available. Finds the responsible for the assembly Electrician other than expected lighting conditions at the installation site, so he can after installation of the main body the footprint by choice set the correct locking position according to the standard.

To the set of the lighting fixture also belongs Set of change carriers. Each change carrier has alternate pictograms. If the lighting fixture as a rescue sign lamp be installed for an escape route to the left, so lets the corresponding exchange carrier with symbols for Use the left escape route. For reasons of simplification can be diverse Wechselträger coherent be presented. Between the individual changers in this case there is a perforation edge; along the perforation edge can the desired exchange carrier from the removable carrier tape are broken out and in the selected frame.

It You can assemble different sets according to the type of installation a luminaire according to the invention can be determined can. If the installation method is to be changed, there is only one small number, z. For example, only the frame belonging to the set Replace components. In addition, another frame over- or over-put on the underlying frame (s) become.

In spite of Ignorance of the exact lighting conditions at the installation site and despite different types of installation and installation requirements can use one and the same body versatile lighting fixture can be installed, the both the standard requirements for escape sign lights as well as escape route lighting. alternative can the lighting fixture also be regular Lamp, z. B. for garden path lighting.

The present invention may be better understood by reference to the two figures being taken, being

1 shows a lighting fixture according to the invention (without pictogram) in a first embodiment,

2 shows a lighting fixture according to the invention (without pictogram) in a second embodiment,

3 shows a lighting fixture in design for a flush-mounted installation (without pictogram),

4 shows a plan view of a lighting fixture (without pictogram),

5 shows a lighting fixture in plan view with a flush-mounted frame and a milky diffuser surface,

6 shows a lighting fixture (without pictogram) with different lighting means,

7 shows a possible interior design of a main body of a lighting fixture,

8th shows a plan view of a basic body according to the invention with a single illumination means,

9 shows a lighting window,

10 shows a carrier board with three different lighting means, lined up next to each other,

11 shows a frame for a body previously shown,

12 shows a further frame with latching hook,

13 shows a carrier plate with numerous, break-out openings,

14 shows different pictograms, connected,

15 shows a first cap and

16 shows a second cap.

1 shows a lighting fixture 1 , The lighting fixture 1 has a basic body 3 and from this body 3 set off a footprint 13 , The footprint 13 becomes as a projection surface 15 used. In the projection screen 15 can a diffuser 17 be inserted. The diffuser 17 gets through the frame 31 edged. The frame 31 is square shaped. Thus, the frame has 31 a first corner 37 , a second corner 39 , a third corner 41 and a fourth corner 43 , In the area of the corners on the body 3 There are spacers on the opposite side. You can see two spacers, namely the first spacer 45 and the fourth spacer 51 , About the spacers 45 . 51 can the distance of the projection surface 15 from the main body 3 to adjust. During transport, the frame may 31 completely on the body 3 sit by the spacers 45 . 51 almost completely in the body 3 sink. The claimed storage space is minimized.

As in 2 good to see, has the lighting fixture 1 on the surface 67 of the basic body 3 a lighting window 7 so that the lighting means 5 or the one lighting means 5 in the direction of the longitudinal extent of the spacers 47 . 49 a well framed by a frame projection screen can or can illuminate well. The spacers 47 . 49 extend the corners 39 . 41 , By pulling it out of the main body or by pushing the spacers into the main body 47 . 49 can the height extension 59 be set. The spacers offer this 47 . 49 Projections, cuts or other locking means, thus a first detent position 53 can be taken. The alignment 9 of the illuminant 5 and the lighting window covering it 7 runs parallel to the edges of the surface 67 of the basic body 3 ,

In 3 becomes the basic body described above 3 with its items containing the box 61 make out, represented from the outside. The lid 63 is through a carrier plate 65 locked. On the box 61 can be a frame 33 be put on. Is the frame 33 a flush-mounted frame 35 , so can the box in a wall mounted sunk. The frame 33 encloses a diffuser 17 that is slightly below the surface of the frame 33 , so reset, lies.

In 4 is an embodiment of a lighting fixture shown such that the z. B. four spacers 45 . 47 . 49 . 51 the frame 31 from the surface 67 with the lighting window 7 is liftable. The spacers 45 . 47 . 49 . 51 offer further attachment positions, so that a second detent position 55 can be taken. The frame 31 encloses the projection surface 15 , The projection screen 15 is in the illustrated embodiment with no means such as a film in the 4 busy; thus the lighting window is below the frame 31 to see.

As in 5 shown, the frame, here the frame 35 , with a light screen 29 be provided. The light screen 29 has a milky appearance. The light screen 29 has an opacity between 0.1 and 0.3.

Will the light screen 29 to 5 out of the frame 33 taken out, so forms a view of the lighting means 5 within the frame 33 to 6 out. The distance of the frame 33 from the main body (not tightened) is chosen so that under the respective radiation angle 11 of the illuminant 5 a standard sufficiently uniform illumination of the projection surface to be occupied (not occupied) is given. If wide-angle LEDs are used, it is possible to work with a smaller spacing.

7 shows a suitable base (without reference numeral) from the bottom, so that the underside of the illumination window 7 as an average part of the eye. At various points are openings 79 . 81 . 83 . 93 provided along the predetermined breaking edges 95 optionally can be broken out. For the attachment of other components, such as one (in 7 not shown) carrier plate, there are retaining lugs 129 , For the positive attachment of other components, such as accumulators 123 , the body offers additional attachment and attachment means. In the interior 97 of the main body there are rails 113 . 115 . 117 , furthermore, can partition walls 119 . 121 to be referred to as partitions, be provided. Furthermore, in the interior 97 screw sleeves 69 . 71 . 73 to be available. The screw sleeves 69 . 71 . 73 are integrally formed from the material of the body. The material is so soft that screw threads can be screwed in using simple metal screws. Along the lighting window 7 are single rows 75 . 77 the screw sleeves 69 . 71 . 73 guided along. The main body is designed so that a clear separation between interior 97 and outdoor space 99 given is. Only over the broken openings 79 . 81 . 83 respectively. 93 can be a connection of the interior 97 to the outside space 99 getting produced. Preferably in the corners, otherwise in other advantageous locations, are manholes 101 . 103 . 105 and 107 provided, z. B. four shafts in all four corners of the body to herein the spacers previously shown 45 . 47 . 49 . 51 after the 1 . 2 . 4 to take up and lead. bands 125 . 127 can on the rails 113 . 115 . 117 for strapping electrical and electronic components such as accumulators 123 be deferred. For this the bands have 125 . 127 Sliders at their ends.

In 8th you see the main body 3 with four shafts 101 . 103 . 105 . 107 , which are each arranged in the corners. To the middle of the body 3 becomes the lighting means 5 , ideally on a carrier board 131 on the body 3 fixed. Single shafts 101 . 103 . 105 . 107 can simulate the corners by bends. The bends increase stability during the guidance of the spacers.

The lighting means 5 to 8th can through a lighting window 7 to 9 protected from external influences.

The lighting means 5 can according to 10 multiple, ideally evenly spaced, on a carrier board 131 to be ordered. In this case, the lighting means 5 , as in 10 shown to be identical. On display are three LEDs, preferably SMD LEDs as lighting means 5 ,

Another frame design of a frame 31 is in 11 to see. The frame 31 is designed as the last, top cover. That's why the frame has 31 latch hook 57 that the function of retaining lugs 129 take.

A lower part of the frame 31 can with further snap hooks 57 , ideally on individual spacers 45 . 47 . 49 . 51 , be equipped so that the lower part of the frame 31 several locking positions 53 . 55 can perceive.

13 shows a carrier plate 65 that together with a in 3 illustrated lid 63 the main body 3 to 1 can create as a closed box. On the carrier plate 65 are numerous possible breakthroughs 79 . 81 . 83 . 85 . 87 . 89 . 91 . 93 intended. In the example shown, there are eight openings. There is a sufficient number of openings provided, for. B. at least eight openings. For this purpose, the possible openings, which are initially formed integrally formed as part of the wall, predetermined breaking edges 95 at which the openings 79 . 81 . 83 . 85 . 87 . 89 . 91 . 93 are easier to break out. The breakthroughs 79 and 93 can have different diameters and averages. Will a single opening, like the opening 93 , lifted off the middle plane of the carrier plate 65 designed, so at the same time the opening can be used as a spacer or attachment point. Through the opening 93 a fixing screw can be driven.

Different exchange carriers 19 . 21 . 23 belong according to 14 to the set of the lighting fixture 1 , The change carriers 19 . 21 . 23 can be connected. Each change carrier 19 . 21 . 23 has his own pictogram 25 , which may be different from the pictograms of the other change carriers. Along a perforation edge 27 can be used to change carrier 19 . 21 . 23 break out.

Should individual openings be dustproof, ideally even splash-proof, sealed, such as the unused shafts 101 . 103 . 105 . 107 to 8th so can caps 109 . 111 to 15 and 16 be stuck with their lower projections in the openings. The caps 109 . 111 are blind covers. The blind covers are designed to be slightly yielding. The blind covers can be rubbery. The caps 109 . 111 have a flat, covering side and an angled plug-in extension. The plug-in extension can emulate a wall section.

Like from the 1 - 16 can be seen, represents a lighting fixture 1 According to the present invention is an installable component, which can be used as desired as escape sign, escape route lighting or regular lighting as desired. This is only the cover on the screen 15 , for example by using different exchange carriers 19 . 21 . 23 or a special light screen 29 to exchange. Using the appropriate frame 31 . 33 . 35 can be a lighting fixture according to the invention 1 both mount on a wall or ceiling, as well as plaster. An electrician must use a lighting fixture according to the invention 1 only hold these, whether he has to install a rescue sign with backlighting or escape route lighting. Sophisticated design measures make it possible to use one and the same lighting fixture in different ways in accordance with the standard. diffuser 16 , Change carrier 19 . 21 . 23 and light screen 29 may be of a sheet-like material. The film-like material is so strong or thick that it is self-supporting. Through the use of foil-like diffuser 17 , Changers 19 . 21 . 23 and umbrellas 29 , which can be used either individually or in a row, the desired opacity and translucence while expanding the light beam of the illumination means 5 to adjust. LIST OF REFERENCE NUMBERS reference numeral importance 1 lighting 3 body 5 lighting means 7 lighting window 9 Orientation or orientation of the luminaire 11 Beam angle of the illuminant 13 illumination area 15 projection 17 diffuser 19 first change carrier 21 second change carrier 23 third change carrier 25 pictogram 27 Perforation edge, in particular along the exchange carrier 29 light shield 31 first frame 33 second frame 35 Flush mount frame 37 first corner 39 second corner 41 third corner 43 fourth corner 45 first spacer 47 second spacer 49 third spacer 51 fourth spacer 53 first stop position 55 second detent position 57 latch hook 59 height extension 61 box 63 cover 65 support plate 67 Surface of the lid 69 first screw sleeve 71 second screw sleeve 73 third screw sleeve 75 first row of threaded sleeves 77 second row of threaded sleeves 79 first opening 81 second opening 83 third opening 85 fourth opening 87 fifth opening 89 sixth opening 91 seventh opening 93 eighth opening 95 Breaking edge 97 Interior of the main body 99 Exterior of the main body 101 first shaft 103 second shaft 105 third shaft 107 fourth shaft 109 first cap 111 second cap 113 first rail 115 second rail 117 third rail 119 first divider 121 second divider 123 accumulator 125 first strap 127 second strap 129 retaining nose 131 carrier board

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 202006014352 U1 [0002]
• EP 1845396 A1 [0002]
• - US 6240665 B1 [0006]
• - DE 102007062999 [0007]

Cited non-patent literature

• - "Emergency Lighting" by Bruno Weis (ISBN 3-7905-0434-3) [0003]
• - VDE 0108 [0004]
• - DIN 4844 [0004]
• - DIN EN 1838 [0004]

Claims (12)

Lighting fixture ( 1 ) with a box-like basic body ( 3 ), in which a lighting means ( 5 ) for direct emission through a lighting window ( 7 ), and with a footprint ( 13 ), characterized in that the footprint ( 13 ) a telescopic projection surface ( 15 ) parallel to the illumination window ( 7 ), which is equipped with a diffuser ( 17 ) is assignable. Lighting fixture ( 1 ) according to claim 1, characterized in that in one embodiment the footprint ( 13 ) a translucent exchange carrier ( 19 . 21 . 23 ) with pictogram ( 25 ), preferably at the same time the diffuser ( 17 ), in particular the diffuser ( 17 ) for light scattering of the light rays of the illuminant ( 5 ), and that the footprint ( 13 ) of a frame ( 31 . 33 ), which is preferably in corner areas ( 37 . 39 . 41 . 43 ) in spacers ( 45 . 47 . 49 . 51 ) passes over. Lighting fixture ( 1 ) according to one of the preceding claims, characterized in that in one, in particular second, embodiment the illumination surface ( 13 ) a milky distributing light screen ( 29 ), which is preferably pictogram-free, and that the footprint ( 13 ) of a frame ( 31 . 33 ) is surrounded. Lighting fixture ( 1 ) according to claim 2 or 3, characterized in that the frame ( 31 . 33 ) a flush-mounted frame ( 35 ). Lighting fixture ( 1 ) according to claim 3 or 4, characterized in that the flush-mounted frame ( 35 ) a pictogram ( 25 ), which is mounted on a removable carrier ( 19 . 21 . 23 ) is arranged in its flat dimensions on flat dimensions of the light screen ( 29 ) is tuned. Lighting fixture ( 1 ) according to one of the preceding claims, characterized in that the box-like basic body ( 3 ) an at least two-part closed octagonal box ( 61 ), in which a lid ( 63 ), which in particular überstülpend a support plate ( 65 ) engages laterally, the illumination window ( 7 ), especially on its surface ( 67 ) arranged centrally. Lighting fixture ( 1 ) according to claim 6, characterized in that on an underside of the lid ( 63 ) Screw sleeves ( 69 . 71 . 73 ) are juxtaposed, on which at the lid ( 63 ) electrical components to be fastened, such as ballasts, voltage transformers, monitoring components, mixed operating components and voltage separating components, can be screwed on, wherein preferably the screw sleeves ( 69 . 71 . 73 ) parallel to an orientation of the illuminant ( 5 ) are arranged. Lighting fixture ( 1 ) according to one of the preceding claims, characterized in that at least one component of the box-like basic body ( 3 ), such as carrier plate ( 65 ) and lid ( 63 ), perforated openings ( 79 . 81 . 83 . 85 . 87 . 89 . 91 . 93 ) has shaped as cable ducts multiply molded, which under pulse action from the main body ( 3 ) breakable access into an interior of the body ( 97 ) for external means such as suspensions or cables. Lighting fixture ( 1 ) according to one of the preceding claims, characterized in that in corners of the basic body ( 3 ) ( 101 . 103 . 105 . 107 ) angled shafts are provided by caps ( 109 . 111 ) are closable. Lighting fixture ( 1 ) according to one of the preceding claims, characterized in that the basic body ( 3 ) innwandig rails ( 113 . 115 . 117 ) and preferably additionally separating webs ( 119 . 121 ) where accumulators ( 123 ) or other energy supply components can be fixed, in particular by tension straps ( 125 . 127 ). Lighting fixture ( 1 ) according to one of the preceding claims, characterized in that a distance of the projection surface ( 15 ) via spacers ( 45 . 47 . 49 . 51 ) opposite the illumination window ( 7 ) is adjustable, wherein the spacers ( 45 . 47 . 49 . 51 ) preferably latching positions ( 53 . 55 ), z. B. stepped latching hooks ( 57 ), at least one point along a vertical extent ( 59 ) of the spacer ( 45 . 47 . 49 . 51 ) exhibit. Lighting fixture ( 1 ) according to one of the preceding claims, characterized in that the removable carrier ( 19 . 21 . 23 ) from a set of alternating carriers ( 19 . 21 . 23 ), in particular contiguously presented exchange carriers ( 19 . 21 . 23 ) is selectable, of which in particular the Wech to be used selträger ( 19 . 21 . 23 ) with its pictogram ( 25 ) along a perforation edge ( 27 ) is breakable.