AT509364B1 - RESCUE LIGHT WITH INCREASED LIGHT LOSS - Google Patents

Abstract

The present invention relates to a lamp (1, 3, 101, 201, 301, 501, 601) having a first, innigenous or inner light space (9, 209, 309, 509, 609), from which a light through an illuminated light exit surface (23, 29, 229, 323, 329, 423, 523, 529, 623) can escape in accordance with standards. Among other things, the invention is based on the knowledge that the energy conversion in a luminaire (1, 3, 101, 201, 301, 501, 601) can be reduced by increasing the luminous efficacy. For this purpose, the light exit surface (23, 29, 229, 323, 329, 423, 523, 529, 623) has two areas (31, 33, 531, 533). One area has a lower translucency (35, 535). One area has a higher translucency (37, 537). The translucency area, which has the lower translucency than a second translucency area, is a two-fold overprint area. In addition, there is multiple light return (75, 77) of the light in the innate light space (9, 209, 309, 509, 609).

Description

description

RESCUE LIGHT WITH INCREASED LIGHT LOSS

The present invention relates to a lamp, in particular a escape sign light having a first, innwandigen or inner light space, from which a light can escape in accordance with standard by an illuminated light exit surface.

STATE OF THE ART

Many escape sign lights have a box-shaped appearance in the core with at least one light exit surface. On closer examination, although the basic structure is box-shaped, the surfaces are often aesthetically pleasingly curved or shaped, as exemplified in DE 20 2008 008 555 (utility model: Roland Pasedag, filing date: 30.06.2008) and in DE 20 2008 008 977 (utility model: Roland Pasedag, filing date: 04.07.2008) presented very catchy and incorporated by these references as fully contained in the present description, so that the core box-shaped form overall rounded or with round transitions. In an inner space of light bulbs are arranged as white LEDs, which distribute their light initially in the inner space of light, from which part of the light is emitted to the outside.

The lighting fixtures receive their electrical energy in an emergency or in a power supply breakdown from an accumulator. It is generally spoken of central battery systems, group battery systems and single battery systems, in order to catchword u. a. to explain at which point in the electrical network of the emergency lighting system the accumulators are present. As a rule, a control center is used from which a control of, communication to and supply of the individual emergency lights can take place. From the control center to the emergency lights, communication takes place in certain emergency lighting systems in order to signal special operating states of the emergency lighting system. How such systems can be set up with control panels can be determined with the aid of DE 10 2007 062 957 A1 (Applicant: RP-Technik e.K., filing date: 21.12.2007), DE 10 2007 062 999 B3 (Applicant: RP-Technik). Technik e.K .; filing date: 21.12.2007), AT 506 780 A1 (Applicant: RP-Technik e.K., priority date: 21.12.2007) and DE 10 2009 022 874 (Applicant: RP-Technik e. K., Filing date: 27.05.2009), whose content regarding centralized emergency lighting systems is fully incorporated by these references.

Actually, numerous aspects of escape sign luminaire and emergency luminaire requirements are enshrined. For example, reference is made to the standards ISO 3864/1, EN 1838, DIN 4844/1, DIN EN 60598/2/22, DIN VDE 0108/1 and DIN EN 50172, which, depending on the location of use of the safety luminaire, are similar to those of the equivalent ÖVE / ÖNormen be replaced or supplemented. In addition, there are country-specific occupational association regulations and often workplace guidelines. The standards set out such technical conditions as the luminance per illuminated area of the escape sign, the illuminance, the contrast within the pictogram, hues, proportions, minimum uniformities in the color areas and possible detection or viewing angle areas for viewers of the pictorial representations of abstracted illustrated escape route directions, special danger spots and orientation aids. Thus, the permissible variations in the design freedom of the escape sign luminaires and the emergency luminaires, depending on where they are to be installed, are often severely restricted. So that escape route luminaires and emergency luminaires may be installed in buildings of a public character, the standard requirements must be met.

On the other hand, the discussion on the energy consumption of lighting fixtures continues to get around, with the result that even escape sign lights and security lights should be used lighting means that are as energy efficient. At the same time, safety aspects are also addressed as justification, because luminaires that require as little energy as possible can be operated longer in an emergency operation from a primary or secondary cell than luminaires that have a higher power requirement.

[0006] LEDs have been considered as particularly advantageous illumination means for some years; especially small or short gas discharge lamps are also gladly used. The use of energy-saving lamps, however, is more unusual, but efforts are to be observed as an alternative to use energy-saving lamps in emergency lights and escape sign lights. In order to produce the best possible uniformity of the illuminated escape sign in the various lighting means, escape sign lights and emergency lights are repeatedly presented at relevant fairs, which have in their interior at numerous, different places individual lighting means. The many different lighting means to produce a total of uniform escape sign lighting. However, this approach runs counter to the desire to increase the safety of safety lighting systems by the lowest possible power consumption and thus by a prolonged lighting duration.

The standardization required uniformity of the illuminated area, often has a Rettungszeichenleuchte several footprints with pictograms, could be made by resorting to proposals from the intellectual property literature, however, the proposals are not applicable to escape sign lights, because the contrast between the different Colored areas of a pictogram and even the area proportions are specified within a narrow framework.

How best uniformity can be produced, can be found for example in WO 2007 036 185 A1 (Applicant: Osram Opto Semiconductors GmbH, priority date: 30.09.2005), is proposed in the use of LEDs, the asymmetrically aligned light emit in an inner space bounded by a radiation exit surface with different reflector layers. In a similar sense, DE 20 2005 006 928 U1 (Applicant: DURLUM-Leuchten GmbH, filing date: 30.04.2005) attempts to reduce the dazzling effect of lighting arrangements at transition areas, such as escalators or moving walks, by means of a more diffuse light distribution plate, designed as a cover. DE 32 23 706 A1 (Applicant: Jobo Labortechnik GmbH & Co KG, filing date: 25.06.1982) would like to further increase the homogenization of the emitted light by using a translucent, plane-parallel plate whose multiple light reflection between the reflective back and the partially reflecting upper surface passes on the narrow side incoming light to all required surface areas. Instead of using a plane-parallel plate, WO 2007 087 710 A1 (Applicant: TIR Systems Ltd .. Priority Date: 01.02.2006) proposes to provide specially designed light guiding means around the lighting fixtures. If such elements were used, safety luminaires would no longer have a conventional cavity, but instead the inner cavity or inner space would have been filled with the light guiding means. Fire protection considerations reject such luminaire designs. The previously described box-like design of emergency luminaires can also be taken from DE 20 2005 005 862 U1 (Applicant: Hsu, filing date: 12.04.2005) in one embodiment. If, in addition, DE 20 2006 000 452 U1 (Applicant: Gießchen, filing date: 12.01.2006) is added, then the idea can be seen to produce light effects of a light exit surface with varying surface thicknesses of a translucent body through the edge effects of the incorporated patterns, ornaments and images , Light distribution plates designed in this way can, of course, also be produced in trough luminaires, recessed luminaires, surface-mounted luminaires and suspended luminaires, which are made of partial luminaire housings of as many framing parts as described in DE 197 41 240 A1 (Applicant: Frankonian Leuchten GmbH, filing date: 18.09.1997). Alternatively, the light exit surface can be realized in accordance with DE 202 02 455 U1 (Applicant: Hohmann, filing date: 13.02.2002). The documents mentioned above are to be taken lights, which should not be used as safety lights. The particular difficulties associated with emergency exit luminaires, in which the escape sign is usually to be applied by a Siebdruckver, can be found in DE 198 02 329 A1 (Applicant: Erco Leuchten GmbH, filing date: 23.01.1998) and DE 298 01008 U1 ( Applicant: Erco Leuchten GmbH, filing date: 23.01.1998). DE 198 02 329 A1 describes how a possible stereometric image of a pictogram can be achieved by translucent matching between the green and white areas of a pictogram. Experience has shown that even more spatial representations in lighting technology are used for commercials. Thus, WO 1999/049 441 A1 (Applicant: De Saro, priority date: 26.03.1998) shows an illuminated visual sign with several translucent layers, which give the visual depth, structure and three-dimensional effects, with the very last layer, the furthest from the viewer is a translucent milky white diffusion layer. The visual mark further consists of a front layer, which defines the letters or characters to be displayed, consisting of a colored outer layer and a colored base layer, wherein between the front layer and the rear light-transmitting layers, a blank layer is arranged. US 6 526 681 B1 (inventor: De Saro, filing date: 26.03.1999) presents a plate bearing text to be displayed on one side and having a scattering beam on the other side. This will allow a halo around the representation on the front of the plate. Similar considerations are provided by US 2007/124 970 A1 (inventor: Hjaltason, filing date: Dec., 6, 2005) which describes that on two sides of a transparent panel equipped with LEDs in cavities in the panel, nearly similar imaging elements are to be arranged, which throw back the light in the transparent plate. This in turn should be generated around the display elements around a halo. Instead of producing different display depths, DE 197 47 096 A1 (Applicant: Dr.-Ing. Willing GmbH, filing date: Oct. 24, 1997) proposes arranging numerous LEDs laterally on a light guide disk whose light first has to traverse an edge zone before the light can be used evenly for illuminating a pictogram area. Another method of equalization, again in illuminated letters, is proposed in DE 2 020 808 B (Applicant: Oetiker, priority date: 07.11.1969), which are incorporated according to translucent fields in the surface of the illuminated title letter, between which a multilayer, opaque surface for multiple reflection is present.

The effect of escape sign luminaires should like to be improved US Pat. No. 6,428,175 B1 (patentee: Dr.-Ing. Willing GmbH, priority date: 14.09.1998) by different Transluzenzzu orders for the different colors of a escape sign. As can be seen in the figures of US Pat. No. 6,428,175 B1, again, as in DE 197 47 096 A1, a high number of lighting means is used in order to produce sufficient brightness. On the other hand, US 2006/080873 A1 (Applicant: Thomas & Betts International Inc., filing date: 28.09.2005) recognizes a problem with escape route luminaires in too short a phase of afterglow time to be enhanced by a persistence illuminated by reflection.

The idea of obstructing many LEDs for an escape route system is also taken up by DE 196 44126 A1 (Applicant: Klingsch et al., Filing date: 23.10.1996), which wants to implement control systems with several LEDs. In a similar sense, luminaires such as those described in DE 197 46 854 A1 (Applicant: Dr.-Ing. Willing GmbH, filing date: 23.10.1997) and in DE 197 47 079 A1 (Applicant: Dr.-Ing. Willing GmbH, filing date: 24.10.1997), to a countless number of light-emitting diodes.

To let the light in too diffuse way from the inner clearance, would create a security light that would not be standard or according to requirements. The proposal from DE 298 01008 U1 to deposit the screen-printed pictogram an opaque backing plate, requires an increase in illuminance, a requirement that is outdated.

Faced with this problem, DE 20 2009 001048 U1 (Applicant: CEAG Notlichtsysteme GmbH, filing date: 28.01.2009) deals with the construction of a safety light, which has a light guide plate as a backlighting surface for a pictogram. The safety luminaire is operated with at least one LED whose light distribution through a light distribution structure is to lead to a more uniform illumination.

TECHNICAL PROBLEM

The individual aspects shown in the aforementioned publications to produce either a more diffused light, a more uniform light distribution, a pictogram or a basic design possibility of lights are fully incorporated by the incorporated references in the following description of the present invention.

If lights are installed in larger units and networks, it is quite important in the planning phase to know the total power consumption as accurately as possible, which should be as low as possible for technical, economic and environmental considerations.

While the users of rooms illuminated with lights primarily aesthetic and visual effects are important, the electrical planners and electricians the electrical, physical and mechanical characteristics of a lamp are important. In the field of safety light lamps are still numerous standard requirements known.

It is therefore desirable to create a lamp that can satisfy as many as possible, the sometimes conflicting requirements. In other words, despite a confusing market for emergency lights, so there is still the need for a lamp that meets all standards and safety requirements and at the same time reduces the usual energy consumption.

INVENTION DESCRIPTION

The object of the invention is achieved by a luminaire according to the main claim. Advantageous developments can be found in the dependent claims.

The invention is based, inter alia, on the recognition that the energy conversion in a lamp can be reduced by increasing the luminous efficacy. The invention is additionally based on the idea that the luminous efficacy can also be increased by using lighting means as sparingly as possible, both in terms of number and with respect to the type.

The luminaire is intended to be used as a escape sign or safety light can. For this purpose, the lamp has at least one surface in which a pictogram (if necessary) is to be arranged. The pictogram is illuminated by a light space arranged inside the luminaire. The light exit surface has an inner wall and an outer wall. The light space is thus arranged innwandig. The light exit surface from the light space has a pattern. The pattern has a defined structure, such as a symbolic escaping person. The invention can also be applied to luminaires which operate with a plurality of light exit surfaces, if necessary also show different or several times the same pictogram. There is a pictogram on a light exit surface. The light exit surface indicates an escape route. The escape route indication can also be generated simply by a light area, there is not necessarily a pictogram in each case. The light exit surface is differentiated by two areas. One area has a lower translucency. One area has a higher translucency. One area has a lower translucency than the other area. The reduction in translucency is achieved by having a two-layered surface. The surface, which is located closer to the light space, has a higher light reflection than the area further away from the light space. An area is close to light space. One surface is arranged distant from the light space. One can also speak of the fact that a layer is close to the light space and a layer is distant from the light space. The luminaires according to the invention are luminaires which are designed in a multi-layered manner, in particular at least two-layered - ie with a first layer and a second layer. The light-near surface ensures light reflection. A certain proportion of the light is reflected back in the inner light space. The reflected light increases the luminous flux within the light space. In the second area is achieved by the increased luminous flux a higher luminance and produces better illumination. The reflected light is used to increase the luminance at least in the second area.

The translucency region, which has the lower translucency than a second translucency region, is a two-fold overprinted region. The translucent area has a side that emits light to the outside. The translucent region has a side which emits light on the inside, in particular in the direction of the innermost light space.

For this purpose, there is a multiple light reflection of the light in the innwandigen light space. With as few means of illumination, for example, only two or three LEDs, can be constructed in this way a escape sign light that ensure sufficient brightness of the darker color surfaces of realized with at least two shades light exit surface. It is advantageous if the layer serving as a carrier disk has a roughened surface.

As suitable media for the innenden Lichtraum different media are available. Thus, in one embodiment, the inner-walled light space may be an airspace, that is, a room filled with ambient air. In a further embodiment, the light space may consist of an optically denser medium than 1. Preferably, the entire light space is filled by the optically denser medium. Suitable materials are polystyrene, polycarbonate or polymethylmethacrylate. The light space, insofar as it is made of a visually denser medium, can cause scattering of the light beams of the LEDs with the aid of concave indentations and convex bulges of the boundary, or alternatively or additionally be equipped with reflection surfaces through the use of total reflection and other incorporations. A curved or angled structuring, such as a concave-shaped or convex-shaped structuring, is advantageously incorporated in the optically denser medium. The angular degree with respect to a plane surface along the surface of the denser medium is more than 10 ° and preferably less than 80 °.

Both measures, the use of a visually denser medium for filling the light space and the light guide by color surface guides can be used alone or together to create a standardization-compliant safety light.

Further, advantageous embodiments can be seen in the following illustrations, both alone considered and in combination also independently inventive aspects.

One of the translucent regions of the light exit surface has a higher transmittance factor than the other translucent region of the same light exit surface. The translucency range with the higher transmittance factor achieves in an advantageous embodiment, in particular by the advantageous light guide, at least three times, preferably five to 15 times, the surrounding luminance. Preferably, even more than 50% of the total light emission is radiated by the significantly smaller translucency area with the higher fluoroscopy factor, if one ignores further light emission openings of the luminaire, for example for illuminating an escape route. The lamp may additionally have on individual pages light exit openings to z. B. to illuminate an escape route. The value of the proportion of light of the total light emission can be increased up to 90%, advantageously 80% of the total light can be coupled out over the range of translucency, which has the higher transmittance factor. At least one luminance of 2 cd / m 2 is achieved in the range of lower translucency and, in the area of high translucence, can also reach brightnesses or luminance values of more than 500 cd / m 2 or for other countries more than 80 cd / m 2; In particular, by adjusting the printing, the brightness differences in a range of less than 1: 5, with a careful design, can also be configured as 1: 2. The print image also determines the differences in brightness between the high translucency areas and the low translucency area. To prevent dazzling the environment or the user at high brightnesses, they are reduced in a dark environment, for example in the event of a power failure. The invention is based on the finding that brightness differences, which result from a small number of LEDs, can be compensated by screening in one of the colors or layers and the backscattered light can be used constructively to increase the brightness. To achieve this effect of Transluzenzeinstellung works with multiple reflections and multiple imprints of coordinated or selected areas.

In a further aspect, an advantageous luminaire can also be described by stating that the translucency area, which is provided with a higher transillumination factor, has more than 400% of the luminance of the area with the reduced translucency. The area of the lower translucency area could be at least 50% and less than 90% of a total area. With such parameters, a total area of a luminaire can be created with a one-sided illuminated area which is larger than 120 cm 2 and smaller than 800 cm 2. A fluoroscopy factor of more than 400% can z. B. at 2000%. Such upper limits should only be sought in the rarest of cases. Better are fluoroscopic factors of less than 1500%. The efficiency of a luminaire can be realized particularly advantageously with a transillumination range of 1000% to 1500%. Experiments have shown that for a particularly good visibility of the fluoroscopy factor in a range of 500% to 1000% is set.

In the case of double printing of the translucent region, it is particularly advantageous if the side intended for the outside is printed with a basic tone, such as a green tone, while the inside is printed with a white tone. By choosing different sides of the pictogram carrier for printing with different shades of the pictogram carrier can be printed simultaneously in one operation. The pictogram carrier need not be subjected to printing twice to produce the two printed pages. The overlap or the arrangement of the color areas on each side is better matched; the risk of misprints is reduced. The measure of simultaneous double printing shortens the production times of at least the carrier of the light exit surface.

The layers constructed translucency can be designed with recesses. The luminaire advantageously has a region in which the layers are perforated, at least in the region of the higher translucency.

As a support for the light exit surface can be advantageously use a material that is suitable for screen printing. Advantageous materials for a screen printing process are film carriers. The film carrier or pictogram carrier made of a plastic can serve as light exit surfaces. A screen printing process allows the absorption, reflection and adsorption factors of the film carrier to be easily adjusted. In one embodiment, at least one of the surfaces is a screen-printed color surface on a carrier material.

In the interior of the lamp, two LEDs can be mounted, the luminous efficiency of a standard escape sign lamp with a pictogram or multiple pictograms, which have an area of 8x16 cm2 to 16 x 32 cm2, can be sufficiently illuminated by only one or two LEDs , The LEDs should be spaced apart. It is particularly advantageous if the LEDs are arranged at the edge of the light space, that is not exactly in the middle. Depending on the size of the luminaire and the luminance provided for the luminaire, LEDs with a total luminous flux of 30 Im, 60 Im or 100 Im are sufficient. Greater values such as 200 Im or 300 Im up to 420 Im, as usually achieved by combining several LEDs Be particularly helpful if, in addition, the escape route should be illuminated. The LEDs are arranged in such a way that a uniform illumination of the different areas is achieved. The uniformity of the illumination within a range should be given as far as possible. In a first area of consistent translucency, a uniform illumination should be given. The uniformity of the illumination can be determined by the brightness. The brightness can be z. B. be determined based on the luminance, the z. B. by candela per square meter. If the brightest and the darkest spot are selected within one area, the luminance can be determined at these locations. It is desirable to form a comparison quotient between the brightest and the darkest spot within a range of equal translucency that is less than 3.5 to 1. Even better would be a ratio of 2.4 to 1. It has been shown that by skillful arrangement of two or more LEDs in the edge region of the light space even such ratios as 1.6 to 1 can be achieved. All ratios that are in a band of 1.2 to 1 to 1.5 to 1, are considered very good. But even luminaires with ratios that lie in a ratio between brightest place and darkest place, in a range of 2 to 1 to 2.4 to 1 are considered very well balanced lights. At ratios of less than 2.4 to 1, that is, at ratios of 2.3 to 1 and smaller numbers, one can speak of a high uniformity.

The light exit surface does not have to lie in one plane. In particular, when the light exit surface is produced by a film carrier, the light exit surface can also be formed with a curved light emitting surface. The light exit surface may be arranged partially cross-cutting to the main photon direction of at least one of the illumination means. The light exit surface is arranged in the luminaire such that direct irradiation by the light of the luminaire is made possible, there is no indirect irradiation, but the direct irradiation is re-radiated after occurrence on the light exit surface within a certain frame or sent back.

Because the light exit surface is designed to be as light and flexible, it helps if an additional stabilizing disc supports the light exit surface in an advantageous embodiment, wherein the stabilizing disc is not present on the entire surface behind the light exit surface, but is reshaped the areas that have a higher translucency should. If the stabilizing disk is made of an injection-molded part, the stabilizing disk is lightweight and very easy to produce.

The light exit surface in the region with higher translucency learn in a positive embodiment of further light-guiding measures. These include roughening a reflection-preventing layer, roughening the light-emitting surface in the area of higher translucency, creating an opaque layer and providing an additional reflection-prevention layer. In the areas with higher translucency, opalescent translucency areas should be created to increase the light yield and a coordinated light distribution. This means that the light should not be reduced by the translucency areas. These areas should be scattering. This can be z. B. be created by a milky film, which modifies anisotropy of the surface luminance and thus in particular reduced.

By the measures indicated can be a safety light hersteilen and train, which can be realized as a single battery light, d. h., Not as a central battery light with central emergency lighting, but with specially assigned energy storage, which are assigned to a single or a group of lights. It is possible to use accumulators with a lower charge capacity or, alternatively, the emergency light operating time can be increased. If conventional emergency luminaires are compared with single-battery luminaires according to the invention, accumulators with a charge capacity of only 0.3 Ah to 3.0 Ah can be used for the same minimum illumination duration of 3 hours, depending on the number of cells (usually 1 to 10 cells are used, typically nickel) Secondary cells 2 to 6, in lithium secondary cells 1 to 4) and size of the lamp can be used. In certain cases, even high capacitive double layer capacitors may alternatively be used.

According to a further aspect, the light exit surface can also be equipped in a partial area with a lens. If the light exit surface is made of a plastic such as a polystyrene, polycarbonate or a polymethyl methacrylate, a lens can be cut directly into the plastic or into the polystyrene. If the light exit surface is used as a pictogram carrier, individual areas of the pictogram can be highlighted by lenticular design or cuts in the light exit surface, more precisely in the Plexiglas. The single lens allows the light distribution to be controlled or aligned outside the luminaire.

According to a further aspect, the light extraction can be further improved by providing an air gap between the carrier material, the Plexiglas, and the film carrier or the carrier with the pictogram.

In a further advantageous embodiment, the inner light space on a surface with a light diffuser. The light reflection is ensured by means of the bright diffuser. Bright shades are considered to be shades having a lightness value of more than 60%. It is advantageous if at least one diffuser surface is arranged in a region which delimits the inner light space opposite the light exit region. One surface of the luminaire is thus formed by the light exit surface, a nearly identical surface is formed by the diffuser surface. The layers of the luminaire, which are realized as two-layer surfaces, are each dominated by a hue, which is characteristic in each case for the luminaire type. For escape sign luminaires, such shades include white and green. Of the at least two colors, the lighter shade of the two shades has a non-uniform printing density in the color layer. So there are areas that are equipped with more color pigments, and there are areas that are equipped with fewer color pigments. By a pressure grid, a brightness curve can be controlled, in particular, the natural brightness curve, which forms in distance to the light source, can be counteracted by a pressure grid.

The innwandige light space of the luminaire can be formed by a medium having an optical density greater than 1.2. The media used to create the higher optical density is glass, polystyrene, polycarbonate, polymethylmethacrylate. In the denser medium, total reflection may preferably take place at at least two opposing interfaces. For the purposes of the present invention, the term "total reflection " considered a reflection of a vast majority of the light, z. B. more than 90% or 95%. A light extraction is advantageously carried out by a structuring, which is arranged in the light space or at its surface.

If lenses are integrated in the light space, the lenses in the luminaire are used to reduce beam collisions at a transition surface of the light entry between two media of different optical density. By the term "reduction of bundling " According to the claim, widening of the light rays is also understood. For this purpose, at least one lens is introduced in the optically denser medium. Advantageously, a plurality of concave-shaped lenses, which are preferably introduced thermally or laserthermisch mounted in the medium. The thermal or laser thermal treatment creates a very smooth surface, which generally exceeds salient surface finishes such as quality sanding. Generally speaking, there can be an incorporated, curved surface in the transition surface. The curved surface is either convex or concave. The curvature makes it possible to achieve a lens-like behavior on the surface. The angle of curvature is the angle that can be determined to approximate the surface profile between the horizontal, middle surface and regions, for example by tangent formation of the indentations or bulges. The curvature can be approximated by angular structures, in particular by Fresnel structures. As a reduction of the light beam bundling, a direction is considered primarily parallel to the light exit surface. The angle measurement is considered with respect to a direction perpendicular to the light exit direction from the entire surface. The angular width, viewed in a vertical line on the (total) surface of the optically denser material, should be less than 50 °. For manufacturing reasons, an angular range of less than 20 °, usually less than 10 ° is often used.

If the luminaire is partially covered with a visually denser material, d. h., equipped with a medium having an optical density of more than 1.2, so the light rays in the optically denser medium can be guided by the fact that on surfaces that are not necessary for a decoupling or where light should not be decoupled, reflection xionsflächen be attached. It is particularly favorable if the reflection surfaces are total reflection surfaces. This allows the luminous flux to focus.

The angular range of the light which is subjected to total reflection, in particular at the non-light-coupling sides, can be increased by using a medium of higher optical density. This widens the angular range of total reflection. Also on or in front of the light-coupling surfaces can be used with the same advantage, a material of higher optical density.

The luminous flux is usually not constant in the entire light space. There are areas in the light room with a higher luminous flux and other areas with a lower luminous flux. In the areas with decreasing luminous flux in the light space, an increased light output takes place. The light extraction can be raised by the light being coupled out due to increased structuring. Stronger structuring can be carried out in particular with smaller dimensioned repetitions in the structuring. The structuring can be advantageously produced in a variety of ways. The structuring can be produced by printing measures such as banding. It has also been shown that prong structures, prism structures and pyramid structures are advantageous for structuring. As a further design element, a higher dot density can also be selected for the printing. In general, it can be said that a structuring is assumed when the smooth surface is interrupted. As a further measure of the structuring of the light space, in particular if the light space has a visually higher density than 1, z. B. has a density of 1.3 or higher, as z. B. plexiglass with a density of about 1.44, it is advisable to incorporate crack in the surface. Such cracks may be wedge-like, lichtauskoppelnde cuts in the surface. The wedge-like cuts are introduced in the surface. The wedge-like cuts provide for radiation in one direction in a vertical manner away from the surface of the light space.

The structuring in the luminaire can be produced in many ways. Thus, the structuring can be created by a screening of a transparent material. As a transparent material, an adhesive can be used. The adhesive is placed in selected places. The adhesive at the splices directs the light out of the light space to the outside. Additionally or alternatively, the discharge points may also be formed by an ink jet printing layer. The ink jet printing layer produces a very uniform printed image. The screen printing process, however, creates a printed image with screens. The deliberate choice of ink-jet print areas and print areas with screen printing guides the light within the luminaire.

The luminaire also has an electronic circuit. With the help of the electronic circuit can be checked whether the supply voltage for the lamp is present. Based on the applied supply voltage, the circuit closes on the ambient brightness, which should be available outside the lamp. The ambient brightness is assumed based on the supply voltage or on the supply current. When the assumed ambient brightness decreases, the luminous intensity of the luminaire is reduced. Such luminaires work particularly reliably when they are set to specific brightness values at the beginning of their operating time. As long as a certain supply current, alternatively a certain supply voltage is present, the lamp, more precisely the circuit in the luminaire, assumes a specific, set or detected brightness. As soon as the expected current or voltage values are undershot, the luminaire can emanate from a darkening of the surrounding space.

If several LEDs are used to illuminate the light space, the LEDs can be connected in series. The LEDs can be connected in series with a microcontroller to form a series circuit. On the cathode side, the LED, which has the lowest voltage level in the LED chain, is connected to the positive connection of the microcontroller. The voltage is stabilized via the LEDs. The voltage drops at the P-N junction of the individual LEDs. The voltage reduced across the P-N junctions then serves as a supply

Voltage for the microcontroller. It is advantageous if the series connection via a buck converter from the supply voltage refers to their operating current. A buck converter reduces to an internal light voltage level, which is increased by the LED voltages in the range of supply voltage for the semiconductor electronics in the lamp. The voltage after the buck converter is at the level that results from the supply voltage for the microcontroller and from the voltage drop across the LEDs. The supply voltage at the microcontroller is lower than the supply voltage of the entire lamp. The entire light can z. B. to 230 volts, while the supply voltage of the microcontroller is 3.3 volts or 5 volts. The voltage after the buck converter can z. B. are at 10 volts.

The LEDs also draw their supply current from the supply voltage for the entire lamp. For this purpose, in an advantageous embodiment, a voltage for the LEDs is formed from a supply voltage. In the lamp at least one high-frequency transformer is arranged, which ensures a galvanic isolation for the LED supply. The separated from the supply voltage LED supply is obtained by means of a high-frequency transformer. The high-frequency transformer receives in a preferably resonant manner from a half-bridge drive its voltage. In an alternative embodiment, the high-frequency transformer can also oscillate in a quasi-resonant manner. The circuit is preferably arranged in a non-visible region of the luminaire.

In one embodiment, luminaires according to the invention can be operated on centrally arranged energy supply distribution systems. In a further embodiment, a lamp is created by the combination of the measures shown, which offers a sufficiently bright light to be emitted as a single battery lamp with extended emergency light duration. With the aid of the multiply printed areas within the light exit surface, the photon beams are favorably guided back and forth in the inner light space until they emerge from the areas with the higher translucency.

In a further consideration, the lamp can also be described in that the lamp has a central, centrally arranged light space, in the laterally low-energy lighting means such as LEDs initiate a luminous flux. In the light space a multiple reflection takes place. Light is extracted at selected points. The decoupling is partially prevented, reduced and partially improved by a multi-coated structuring support by the pictogram. Structuring support is provided by the colors of the pictogram. In selected areas, more light is emitted to the outside. In other areas, less light is emitted to the outside. The multiple reflections contribute to the homogenization. Within the light space can be operated with conscious light guides. On the one hand the Auskoppelbereiche serve to guide the light; On the other hand, reflection guides serve to promote the use of light. The pictograms to be produced, eg. B. in a screen printing process, can be created with different printing densities (distributed over the surface). On the basis of the printing density and on the basis of the color tones, it is possible to set the portion of the light that has been decoupled and retained in the light space (in other words, the number of photons ").

The lamp is advantageously equipped with a set to adapt to different circumstances. The set includes an interchangeable pictogram. In fact, at least two pictograms are thus part of the set. A pictogram can be arranged laterally of a provided for receiving a pictogram support frame. The support frame offers a holder. The holder is designed so that at least one interchangeable pictogram can be inserted into the holder. The interchangeable pictogram is held by the support frame, which at least partially covers the interchangeable pictogram, which is usually made of a stiffer foil. The connections of the individual components are designed in plug-in versions.

From a further point of view, it can also be stated that the illumination is made uniform with the aid of the present invention. A uniform illumination contributes to an increase in efficiency. However, a perfect uniformity can not be achieved constructively or only at a disproportionately high cost, which is why cost and benefit are weighed against each other. It is also easy to increase the contrast between the different areas of different translucency, which also contributes to the increase in efficiency.

The present invention can be better understood by reference to the embodiments of the accompanying figures without limiting the invention to these embodiments, wherein Figure 1 shows schematically a section of a first, according to the invention

[0053] FIG. 2 schematically shows a section of a second luminaire according to the invention, [0054] FIG. 3 shows a schematic view of a light space with light distribution, [0055] FIG. 4A shows a schematic representation of a multiple printed light exit surface, [ 0056] Figure 4B is a schematic representation of concave or convex structures and

[0057] FIG. 5 shows a first exemplary embodiment of a luminaire, [0058] FIGS. 6 to 8 show a second exemplary embodiment of a luminaire, [0059] FIG. 9 shows a plurality of contiguous light exit surfaces with pictograms, FIG shows a simplified circuit diagram of a luminaire according to the invention in centrally supplied systems, FIG. 11 shows a simplified circuit diagram with a resonance converter for the

FIG. 12 shows a simplified circuit diagram for operating an LED in one

[0063] FIG. 13 shows a further embodiment of a luminaire in a stylized depiction, and [0064] FIG. 14 shows schematically the increase of the angular range by total reflection transversely to the outcoupling direction.

The embodiments illustrated in the figures illustrate individual aspects of the present invention, which may be inventive in their own right, without restricting the present invention exclusively to the embodiment of the embodiments.

1 shows a schematically illustrated lamp 1 in a cross-sectional view through the back reflector 57 and the stabilizing disk 51, which surround a part of the light space 9. Reflector 57 and stabilizing disk 51 separate the inner region 7 of the luminaire 1 from the outer region 5. The LED 19 is located near one end 15 of the light space 9. The light space is limited by its ends 11,13,15,17. At the light space 9, the back reflector 57 connects at one end 11, while the other end 13 is limited by the stabilizing disk 51. The stabilizing disk 51 allows a light beam to pass in the main photon direction 49. There, where the light through its light rays 71, 79, 81 can emerge in the form of a bright area 25 through the light exit surface 23, there is a first region 31 of a planar arrangement. In addition to the region of the first type 31, further regions 33 are arranged on the transparent carrier, for example the stabilizing disk 51. The light exit surface 23 provides a bright area 25 outside of the lamp 1. On the Träqer individual layers 39, 41, at least teilwei se overlapping, placed. In the layers 39, 41 there is an area (here shown approximately in the middle) that is broken through. The light space 9 is in the embodiment of Figure 1, at least partially filled with ambient air space. In the main photon direction 49, only a small portion of the light through the light beam 71 radiates directly. From the LED 19, a light beam 73 passes directly onto one of the layers 39, 41 in order to be reflected at least partially in the form of fanned-out light beams 75, 77. Further reflections on the back reflector 57 divide the light beams 75, 77 into further light beams 79, 81 which, as a result, can pass through the first region 31 substantially in the main photon direction 49 so that they emerge from the light exit surface 23.

A similar design of a luminaire 101 can be seen in FIG. The luminaire 101 is constructed in layers with the layers of back reflector 57, specially selected medium 59 in a region of the light space 9 and further layers 41, 39. Not directly in front of the light exit region, the light exit surface 23, an LED 21 is arranged, the different light beams 71, 73, preferably directed into the optically denser medium 59, can radiate. Only a portion of the light beams 71, 73, namely the light beam 71, passes directly from the first translucent region 35 to the light exit surface 23. Other light rays, such as the light ray 73, are significantly attenuated through the layers 39, 41, in order to leave the region of the second translucence 37 to withdraw in a weakened form. Significant portions of the light beam 73 are repeatedly reflected in the form of the light beams 75, 77, 79, 81 continued by multiple deflection and reflection in the light exit region of the light exit surface 23. The light space 9 may emerge in a main photon direction 49 from some of the light beams, partially in a certain angular range, such as represented by the light beams 79, 81. The luminaire 101 is a block-like luminaire, formed by the rear reflector 57, the medium 59 and the individual layers 39, 41 applied thereto. The luminaire 101 has different translucencies 35, 37 in different regions. The light space, such as the light space 9 of Figure 1, is also limited in the embodiment of Figure 2 by different ends 11,13,15,17. As shown in FIG. 2, the light space is almost or completely formed by the medium 59.

FIG. 3 shows a detail of a corresponding luminaire which represents the light space 9 together with an LED 19. The LED 19 is disposed beyond the light space 9. At the same height as the LED 19 is arranged, even more LEDs (not visible), as it were behind and in front of the image plane, can be arranged. The LED 19 is located or the LEDs are therefore located beyond the edge 61 of the light space 9. Photon rays 47 emerge from the LED 19 and enter the medium 59. The light beams propagate in the medium 59 away. The light beams thus form a main photon direction 49. At the ends 11, 13 of the light space 9, a (nearly) total reflection can be observed. Transverse to the main photon direction 49, the light exit surface 23 is arranged. The light exit surface 23 is structured differently than the surface with the lower translucency 35. The light exit surface 23 has a higher, ie a second translucency 37 compared to the first translucent 35. The light exit surface 23 extends only over a portion of the medium 59. On one side of the light space 9, the light is introduced into the medium 59. For better dispersion, as an alternative to better directional guidance, lenses 83 are introduced into the surface 59 of the medium 59 at the entrance surface of the photon beams 47 into the medium 59. Laser cutting methods for introducing the lenses 83 are particularly advantageous. The medium 59 can represent the stabilizing disk 51 at the same time, ie at the same time. The stabilizing disk 51 supports the region with the higher translucency 37. To promote the light emission from the light exit surface 23, the stabilizing disk 51 not only mechanically supports the existing pattern, but also supports the guiding of the photon beams 47 to the light exit surface 23 beyond the edge 61 of the light space 9, traveling a distance that has an optical density of approximately 1, the medium 59 has an optical density that is greater than 1, in the present case greater than 1.2. The light exit through the light exit surface 23 is conveyed in a row by the structuring.

Figure 4A shows a pattern 27, which is not a common escape route sign for reasons of simplification, but due to the simpler structure of the illustrated pattern 27 can illustrate the advantageous designs understandable. Similar to the arrangement according to FIG. 3, in FIG. 4 an LED 21 is located laterally of the light exit surfaces 23, they are distributed over a surface as a multiplicity of light exit surfaces 23. The light exit surface 23 is supported by a stabilizing disk 51. The stabilizing disk 51 of the escape sign luminaire 3 has a recess, on the surface of which a lens 85 is incorporated. As can be seen from the entire pattern 27, there are different areas in the pattern 27. There are bright light areas 25. The bright light areas 25 correspond to the light exit areas 23, which are arranged sporadically over the entire area. The light exit surfaces 23 have a higher translucency 37 than the regions of lower translucency 35 spanned between the light exit surfaces 23. Thus, the pattern 27 has at least two different surfaces 43, 45. Towards the edge, the stabilization plate 51 has significantly denser patterns. In the intermediate areas, there are areas with narrowed light exit surfaces 23 and clearly extended light exit surfaces 23. The further from the LED 21, a light exit surface 23 is located, the denser the individual light exit points due to the printing in the embodiment of Figure 4 are arranged. By the density structuring of the translucencies 35, 37, a translucency 37 can be created, through which most of the light emerges from the luminaire. In the present case, this is about 80% of the total light emission. The support of the light exit surface 23, designated as the stabilizing disk 51, is a film carrier on which a pictogram or other pattern 27 is applied. For reasons of understanding promotion, only one LED 21 is located next to the light exit surface 23, although most safety luminaires 3 according to the invention have in reality at least two LEDs. The different translucencies 35, 37 are generated by a printing process or by a multi-step printing, in this case, the usual shades for escape signs can be used to advantage. By choosing different printing densities over the entire surface, the proportion of the reflected light and the proportion of the emitted light can be set favorably. The pattern 23 contributes to the better light output of the light from the LED 21. If, in addition, individual ends 15, 17 are designed with increased reflection, the scattering rate in directions deviating from the light exit direction through the light exit surface 23 can be reduced. By arranged on the surface of the lens 85, the light rays from the LED 21 can be distributed immediately low in the stabilizing disk 51. The optimal light output is increased by an input light distribution via a lens 85 and by structuring in the escape sign of the escape sign light 3, so the pattern 27. As a result of the thermal production of the lens 85 in the medium used, such as a film carrier, surfaces which are as smooth as possible are produced, undesired scattering is further reduced. The luminous flux decreases to the ends 15, 17 of the light space, so that the light exit surfaces 23 are set closer in the edge regions. The different surfaces 43, 45 occur multiply distributed over the entire surface, their sizes and frequencies vary, inter alia, depending on the distance to the light source of the LED 21. Such a print pattern can also control the light extraction from a more dense optical medium advantageous.

Figure 4B shows the outline of a light space 9 with higher optical density, because in the light space 9, the medium 59 is present. Above that, above the light space 9, there are, for example, two LEDs 19, 21, which stand for any number of LEDs. The LEDs 19, 21 illuminate the light space 9. On the upper side of the light space are structures that form concave indentations or convex bulges. Some of these structures have an angle to the middle upper edge of the light space, represented by the parallel offset line 62, wherein at least two regions 68, 70 which are distinguished by the angles 64 and 66 lie opposite one another and are located in the light emission area of the LEDs 19, 21.

FIG. 5 shows an exemplary embodiment of a safety light 201. The safety light is multifunctional, at least duo-functional, to be used. The safety light 201 has a first part, which is designed box-shaped. The box 287 serves to receive control electronics. Furthermore, excellent locations are provided in the box 287 so that the box 287 can be attached as an attachment. The safety light 201 has a further part, which is composed of the two legs 263, 265 and the transverse strut 267. The legs 263, 265 are the side parts. The cross strut 267 connects on the narrowest side of the legs 263, 265 these together. The components 263, 265, 267 enclose the light space 209, which is bounded on another side by the box 287. The light is introduced into the light space 209 via the box 287. For this purpose, the box 287 has a light rail 269. In the light rail 269 at least two LEDs 219, 221 are arranged side by side. The LEDs 219, 221 are arranged with their radiating side in the direction of the light space 209. With different Klipplaschen 291, the first part, the box 287, connected to the second part, in particular with the two legs 263, 265 via a simple impressions. Between the spaced Klipplaschen 291 is guided laterally along the light space 209, a guide rail 289 respectively on the inner sides of the legs 263, 265.

The retaining rail 293 is intended to receive a transverse, the light space 209 dividing material. This material may be both a diffuser surface 255 for the light illuminated via the LEDs 219, 221 and a back reflector 257. The support rail 293 surrounds the light space 209. The legs 263, 265 and connecting them cross strut 267 divide the interior portion 207 of the safety light 201 from its outer region 205. About the support rail 293 can be a light space final surface, for. B. with a pattern (not shown - similar to the pattern of Figure 9) completed. Due to the double assignability by inserting end plates in the two circumferential support rails 293, a light space 209 is created in the result, which is divided into two. The light introduced via the LEDs 219, 221 along the light rail 269 is discharged laterally from the main light direction, the main photon direction. The legs 263, 265 give the retaining rail 293 a slightly curved structure, so that the pattern to be inserted is also arched. Thus, the pattern to be introduced in the region of the transverse strut 267 approaches the back reflector 257. By the curved or concave shape of the exit surface of the light space 209, a homogenization of the illumination is brought about, although the light rail 269 is arranged only on one side of the light space 209. If the diffusion properties or patterns such as pictograms of the safety light 201 are to be exchanged, then the first part 287 and the second part consisting of the legs 263, 265 and the transverse strut 267 can be separated by pushing back the clip plates 291 with a few handles. Depending on which pattern is arranged in the inner region 207 of the safety light 201, a center part coordinated with the pattern, such as diffuser surface 255 or back reflector 257, is to be inserted into the guide rail 289. The light exit surfaces are additionally covered with the corresponding pattern and by clipping the Klipplaschen 291, the safety light 201 is adapted for their intended use. Thus, the light space 209 can be limited by films having different translucencies. The deflected photons from the LEDs 219, 221 are reflected at the back reflector 257 several times in the direction of the exit surface. Because the exit surface curves toward the back reflector 257, the deflected main photon direction finds a multiple cross-intersecting approach. The retaining rail 293 is dimensioned so that not only a film carrier with a pictogram, but also a stabilizing disk (not shown) can be used. The box 287 is dimensioned so that in a first embodiment, a control electronics for centralized lighting can be installed in the box 287, in a second embodiment, accumulators can be placed in the box 287, so that from the safety light 201 a lamp for single battery lighting for the emergency, a network breakdown, arises. The diffuser surface 255, which can be arranged in the light space 209, divides the light space 209 into a first light space and into a second light space. The laterally deflected light via the light rail 269 is deflected by the diffuser surfaces facing away from the exit surface in a new main photon direction.

Figures 6, 7 and 8 show another embodiment of a safety light 301. In Figure 6, the first frame 363, which encloses the light space 309, shown together with the first part of the box 387. The first frame 363 captures the medium that forms the light exit surface 323. Any suitable light exit surface with different translucencies can be placed on the inside of the frame 363. The box 387 is used to attach the safety light 301 to a ceiling or to a wall. FIG. 7 shows a second frame 365 of the safety light 301, which simultaneously has the light rail 369. The light rail 369 is disposed on one side of the light space 309, it is the side which is the farthest side from the box 387. If the box 387 screwed to the ceiling, the light rail 369 emits the light in the direction of the ceiling or the box 387. The exact angle of the light exit surface 323 (see Figure 6) can be adjusted via the hinges 395. The light space 309 is filled in an advantageous configuration with the diffuser surface 355, which fills the entire light space 309. Laterally to the light rail 369 numerous return reflectors 357 are provided in the frame 365. The light introduced from below through the light rail 369 is prevented from leaking laterally by the back reflectors 357. The main photon direction 349 is initially directed toward the box 387. The light exit surfaces 323 are angled toward the main photon direction 349, the angle over the entire surface is almost 90 ° to the main photon direction. FIG. 8 shows a frame 365 of the safety light 301 with, as shown in FIG. 7, and a further frame 367 which can be pressed onto the frame 365 in a form-fitting manner via the clip plates 391. The recess of the picture frame-like frame, which is composed of the two frames 365, 367, forms the light space 309. On the uncovered side of the frame 365, the frame 363 of Figure 6 is also placed in a final assembly step. The box 387 is multi-layered and thus more stable in this case. The hinged hinge 395 is bordered by the enclosing shells of the two frames 363, 367. One of the frame 363, 365, 367 is provided by the light rail 369. As the use of elements between the individual frames 363, 365, 367, the light rail 369. On the two outer frame 363, 367, a retaining rail 393 is arranged in each case on each side, in a Insert film carrier with pattern. The light extraction at undesired locations is avoided by means of back reflectors 357 incorporated in the frame 365 by almost complete reflection. For this purpose, the inside of the frame 365 has a surface finish, in particular a vapor deposition layer. The light rail 369 is elongated incorporated into the frame. As a result, the light rail 369 offers space for several LEDs arranged in it (not visible). The orientation of the LEDs determines a first main photon direction 349. To the main photon direction 349, the light exit surfaces 323 are arranged transversely. The main photon directions are cut transversely. The light exit surfaces 323 can be occupied both by stabilizing disks and by pictogram disks. The box 387 is dimensioned to accommodate AA type accumulators in an alternative AAA type configuration. The safety light 301 is in this case a single battery light.

9 shows a foil carrier 423 with different pictograms 29, 229, 329. The pictograms 29, 229, 329 have dark 435 and bright surfaces 437 and represent a symbol for indexing an escape route. In conformity with the standard, the colors to be used are green and white White. The contiguous surfaces shown in FIG. 9 consist of a plurality of closely assembled individual points. The distance between the dots varies. The color density is matched to the distance to the light rail or to the illuminated LED. The reflection density and the transmittance ratio of the light are set via the printing density. By this measure, translucency regions 435, 437 can be created, in which more than 80% of the total light emission emerges from the luminaire. The pictograms 29, 229, 329 on the pictogram carrier, the foil carrier 423, are presented contiguously and may be used to indicate different escape routes. With the icon 29, an escape route, which points to the left, is displayed. With the icon 229, an escape route is displayed, which points to the right. By the icon 329 z. B. are displayed below the icon located escape door.

FIG. 10 shows a schematic diagram of a circuit diagram of a luminaire with three LEDs LED1, LED2, LED3. The LEDs are connected in series. The same current flows through the LEDs LED1, LED2, LED3, which is set via the assembly of IC3, R4 and R5 on the basis of the voltage. The assembly IC3, R4 and R5 is composed of a shunt regulator and a voltage divider. At the shunt regulator IC3, the operating point, ie the voltage, is set via the voltage in the voltage divider. The shunt regulator IC3 is advantageously designed to be temperature-compensated. The internal supply voltage set via the shunt regulator IC3, which can be designed with 5V, can be used as a supply voltage for other components of the circuit, such as for the microcontroller IC2. The terminals PIN1 and PIN2 are available for the voltage as supply voltage connections. The microcontroller IC2 is supplied via the pins PIN1 and PIN2. At other terminals of the microcontroller IC2 measuring and control circuits are connected. At one pin of the microcontroller IC2, the optical feedback of the optocoupler amplifier 0K1 can be controlled. The optocoupler amplifier 0K1 is operated via the resistor R3 current-limited from the microcontroller IC2. The voltage available for the LEDs can be monitored at one pin of the microcontroller IC2. For this purpose, a voltage divider with the resistors RN1 and RN2 is constructed. At several pins of the microcontroller IC2 a coding switch S3 are connected. At a pin of the microcontroller IC2, the potential on the earth conductor can be monitored. For this purpose, a frequency filter from the resistor R2 and the capacitor C2 is realized. At one pin of the microcontroller IC2, the voltage of the supply voltage can be monitored. For this purpose, a voltage divider of the resistors R1 and R9 is constructed. At one pin of the microcontroller IC2 a transistor is connected. As can be seen in FIG. 10, an enhancement field effect transistor is particularly suitable for influencing the resistance load via the resistor R11 at the supply voltage connection. At a pin of the microcontroller IC2, a phototransistor T1 is connected. The microcontroller IC2 is the logical and control heart of the circuit of Figure 10.

The circuit in FIG. 10 is simplified by some aspects in order to better emphasize the principal functionalities. In this way, the functionalities of the circuit sections can be better understood.

From the components diode D1, switching control circuit IC1, coil L1 and capacitor C4, a buck converter is constructed. The buck converter provides the power for the operation of the LEDs. The buck converter can be adjusted via the optical feedback loop with the optocoupler amplifier 0K1 from the microcontroller IC2, turn off or otherwise influence its strength. The potentials between the conductor at the terminal X1-2 and X2-1 can be monitored with respect to each other in terms of their level. If the lamp is intended to send information to other devices (not shown) connected to terminals X2-1 and X2-2, a switching pulse can be applied via the transistor Q1 to the supply lines to be connected to terminals X2-2 and X2-1 (Phase conductor and earth conductor), to be impressed. In regular operation, that is, when operating with an AC power supply at the terminals X2-1 and X2-2, both the LEDs LED1, LED2, LED3 and the rest of the circuit receive a rectified voltage from the bridge rectifier B2. The rectified voltage is smoothed via the capacitor C1 and processed for the buck converter. To maintain a stabilized frequency, the buck converter requires a capacitor C3. The transistor T1 reports the brightness to the microcontroller IC2. Depending on where the transistor T1 is arranged, the brightness in the luminaire, ie the brightness of the LEDs LED1, LED2, LED3, can be measured with the aid of the transistor T1 or the brightness of the surroundings of the luminaire. In an alternative embodiment (not shown in FIG. 10), more than one phototransistor T1 can be provided so that both the brightness in the luminaire and in the surroundings of the luminaire are measured. An address can be set at the switch S3. The set address determines the behavior of the microcontroller IC3. Via the selected address on the switch S3, the lamp is assigned a number, via which these or similar lamps can be switched on and off. With the aid of the switch S3, the degree of brightness of the luminaire is set. The switch S3 used has sixteen different addresses, so that sixteen different conditions and states can be programmed into the microcontroller IC3.

The LEDs LED1, LED2, LED3 limit the current flow due to their series connection. Over each LED LED1, LED2, LED3 falls a fixed voltage value, z. B. 3.5 V, from. The shunt regulator IC3 sets a fixed supply voltage value. The current flowing through the LEDs at least partially serves to supply the microcontroller IC2. The microcontroller IC2 in turn sets the current through the LEDs via the buck converter. If an LED is so damaged that no electrical connection is possible, then the microcontroller IC2 no longer has the corresponding voltage at its PIN1 via the + 5V connection. The standard pre-connection of the LEDs in front of the microcontroller IC2 reduces the power conversion in the circuit of the lamp. The part of the circuit consisting of buck converter, connected thereto light means LED1, LED2, LED3 and thereby supplied in a voltage stabilized manner microcontroller IC2 reduce the power consumption of a lamp that is equipped with such a designed circuit. The microcontroller IC2 can generate short-term impedance pulses by driving the impedance converter of transistor Q1 and resistor R11. As a microcontroller IC2, a micro microcontroller such as a PIC16 F 688 can be used particularly well. The shunt regulator IC3 is advantageous to build up with an IC member of the TL 431 family. For the switching control circuit IC1 are available as finished semiconductors of the NCP 1010-D with its kindredwandten family members available.

The circuit according to FIG. 10 is particularly well-suited as power-efficient electronics of a luminaire.

If it is a circuit for a single battery supply in an emergency, switchable energy sources such as batteries must be provided at a suitable location. For example, the LEDs can be supplied from an accumulator supply which automatically switches on when the voltage falls below the terminals X2-1 and X2-2 (not shown in FIG.

FIG. 11 shows a further circuit which can be installed inside the luminaires 1, 3, 101, 201, 301 and 501 (see FIGS. 1, 2, 5, 8 and 13). The supply voltage, z. B. 230 volts, is passed through the terminals of terminals X1-5 and X1-6 on the rectifier B4. The rectified voltage is smoothed over the capacitor C11, which is an electrolytic capacitor. The capacitor C5 forms a resonant circuit together with the coil L2 operated as a transformer. The resonant circuit of C5 and L2 is controlled periodically via the IC4. For this purpose, the IC4 may be connected to a microcontroller (not shown), similar to a microcontroller according to FIG. The IC4 can z. A FSFR2000. The pulsed transmitted voltage is rectified by the rectifier B3 again. The rectified voltage operates, stabilized via the transistor Q4, the LEDs LED4, LED5, LED6, LED7. For this purpose, the voltage is smoothed once again with the aid of the capacitor C6. The voltage drop across the resistor R7 is reported back via the optocoupler 0K2. For this purpose, the voltage level is adjusted via the resistor R8. In regular operation, it is possible to check whether the series connection of LEDs LED4, LED5, LED6 and LED 7 is functioning properly. For this purpose, the decoupled signal from the optocoupler 0K2 can be forwarded to a microcontroller (not shown). If a fault is detected, the timing of the two MOS fets Q2 and Q3 of the IC4 can be reduced or interrupted. No more unnecessary energy is transmitted via the coil L2. The current through the LEDs LED4, LED5, LED6 and LED 7 can in turn be used to operate other electronic components. In simple terms, a resistor R6 is shown instead of a microcontroller. The circuit according to FIG. 11 can be used both as a centrally supplied circuit for a luminaire and as a single luminaire circuit, provided that an additional accumulator is present.

FIG. 12 shows a further embodiment of a circuit which can supply an LED D4 (or else a plurality of LEDs - not shown) from accumulators G1, G2. The supply voltage, the mains voltage, is present at the terminals X1_3 and X1_4. The transformer TR1 transmits already reduced from the primary side PR1 to the secondary side SEC, the voltage which is rectified via the rectifier B1. The current flow through the LED D4 is limited by the resistor R12. The resistor R13 limits the current flow in and out of the series-connected accumulators G1, G2. The diodes D2, D3 are Zener diodes which limit the voltage across the accumulators to a voltage range. The capacitor C7 stabilizes the rectified voltage at the rectifier B1 before forwarding to the accumulators G1, G2 or to the LED D4.

The above-described circuits of FIGS. 10, 11, and 12 may be installed at the location above the light space 509 as the electronic board 597 to produce the control of a lamp 501 of FIG. The LEDs 519, 521 are offset from the electronics board 597 also disposed on the edge 561 of the light space 509. The LED 521 is in front of a first indentation 583 which is similar to a lens. The electronic board 597 is supplied via the connections X1-7 and X1-8. The upper area for the electronic board 597 and the LEDs 519, 521 is configured box-shaped. The illuminated regions 531, 533 with their different translucences 535, 537 follow the box 587. The area with the icon 529 is shown in a layered structure. The light space 509 of the lamp 501 is bounded laterally by the ends 511, 513, 515 and 517. At one end 517, the box 587 connects. In the light space 509, there is a stabilizing disk 551, which supports the pictogram 529 in a region 535 for conveying the light exit from the light exit surface 523. In the light exit surface 523 there is a layer 541 resulting from pressure points. The white pressure points are shown with different distances between them.

FIG. 14 shows in a third plane, which is transverse to the main photon direction 649, a guidance of the light beam emerging from the LED 619. The optically denser medium 659 is designed so that the light rays 671, 673, 675, 677 can pass therein. For widening and focusing the light beams 671, 673, which emerge from the LED 619, a reflector 699 is incorporated in the optically denser medium 659. The reflector 699 forms the one reflection surface for the light rays 671, 673, 675, 677. A second reflection surface is created by the end 611 of the light space 609. Further reflection planes are present at further ends 613, 615, 617 of the light space 609. In the medium 659, which has a higher optical density than the space in front of the light exit surface 623, the light rays, ideally in total reflection and uniform. Subsequently, they exit the light exit surface 623 in the main photon direction 649. Due to the reflection surfaces at the ends 611, 613, 615, 617, the light beams 671, 673, 675, 677 can run parallel to the light exit surface 623 for a while until they can then pass through the pictogram (see, for example, FIG , An enlargement of the angular range is achieved by the optically denser medium 659.

The light 501 with its icon 529 serves as a escape sign light. From the inner light space 509, the light can exit via the light exit surface 523. The pictogram 529 has two areas 531, 533. The areas 531, 533 have different translucences 535, 537. As can be seen in the layer structure with the layer 541, there are different layers, over the translucency of the translucent areas 531, 533 is controlled. In the area 531, a screening of the white print is indicated. The LEDs 519, 521 lie in the edge 561 and can illuminate via structured surfaces 583 in the stabilizing disk 551. A particularly bright light region 525 is set via the layer 541. The bright light area 525 is a perforated layer. The LEDs 519, 521 are aligned transversely to the light exit surface 523. Thus, indirect illumination of the translucent areas 531, 533 takes place. At the edges, the ends 511, 513, 515 and 517, light retroreflective layers are placed for the inner-walled light space 509.

The measures described above in the different embodiments can be combined with each other for advantageous light output. Each individual measure contributes to increasing the luminous efficacy. As a criterion of the light output, different measures can be determined. After a measurement process, the current consumption is compared with the maximum illumination width. According to another measuring method, the power consumption of a luminaire according to the invention in continuous operation is compared with the emitted brightness. In some standards minimum light levels are prescribed at a certain distance from the luminaire. To indicate the light output, the luminous efficacy of the luminaire can be set in relation to the energy to be expended. RESPECT ZECHE LIST:

Significance Meaning Use I Luminaire Fig. 1, Fig. 2 3 Escape sign luminaire Fig. 4 5 Outside area Fig. 1 7 Interior area Fig. 1

9 light space Fig. 1, Fig. 2, Fig. 3, Fig. 4B II first end of the light space Fig. 1, Fig. 2, Fig. 3 13 second end of the light space Fig. 1, Fig. 2, Fig. 3 15 third end of the light space Fig. 1, Fig. 2, Fig. 4 17 fourth end of the light space Fig. 1, Fig. 2, Fig. 4

19 first LED Fig. 1, Fig. 3, Fig. 4B

21 second LED Fig. 2, Fig. 4, Fig. 4B 23 light exit surface Fig. 1, Fig. 2, Fig. 3, Fig. 4 25 bright light area Fig. 1, Fig. 4 27 Pattern Fig. 4 29 Pictogram Fig. 9 31 first area Fig. 1 33 second area Fig. 1 35 first translucency, especially lower translucency Fig. 2, Fig. 3, Fig. 4 37 second translucency, especially higher translucency Fig. 2, Fig. 3, Fig. 4 39 1st layer Fig. 1, Fig. 2 41 Second layer Fig. 1, Fig. 2 43 First surface Fig. 4 45 Second surface Fig. 4 47 Photon beam Fig. 3 49 Main photon direction Fig. 1, Fig. 3 Stabilizing disk Fig. 3 , Fig. 53 accumulator 57 back reflector Fig. 1, Fig. 2

59 Medium, in particular optically dense medium Fig. 2, Fig. 3, Fig. 4B 61 Edge of the light space Fig. 3 62 Surface, in particular reshaped by a straight line, Fig. 4B which lies in at mid-height

64 first angle Fig. 4B

66 second angle Fig. 4B

68 area, in particular for the passage of light Fig. 4B

FIG. 4B 71 light beam, in particular first direct beam FIG. 1, FIG. 2 73 light beam, in particular second direct beam FIG. 1, FIG. 2 75 light beam, in particular first partially reflected beam FIG. 1, FIG Light beam, in particular the second partially reflected beam Fig. 1, Fig. 2 79 Light beam, in particular first outgoing beam Fig. 1, Fig. 2 81 Light beam, in particular second outgoing beam Fig. 1, Fig. 2 83 First lens Fig. 3 85 second lens Fig. 4 101 safety light, in particular a first Fig. 2

Embodiment 201 Safety light, in particular a second Fig. 5th

Example 205 Outside Area Fig. 5 207 Inside Area Fig. 5 209 Clearance Room Fig. 5 219 First LED Fig. 5 221 Second LED Fig. 5 229 Pictogram Fig. 9 255 Diffuser surface Fig. 5 257 Rear reflector Fig. 5 263 First leg Fig. 5 265 second leg Fig. 5 267 transverse strut Fig. 5 269 light rail Fig. 5 287 box, in particular electronics or Fig. 5th

Fastening box 289 Guide rail Fig. 5 291 Klipplasche Fig. 5 293 Retaining rail Fig. 5 301 Safety light, in particular a third Fig. 6, Fig. 7, Fig. 8

Embodiment 309 Light space Fig. 6, Fig. 7, Fig. 8 323 Light exit surface Fig. 6 329 Pictogram Fig. 9 349 Main photon direction Fig. 7 355 Diffuser surface Fig. 7 357 Rear reflector Fig. 7 363 First frame Fig. 6 365 Second frame Fig. 7, Fig. 8 367 Third frame Fig. 8 369 Light rail Fig. 7, Fig. 8 387 Box Fig. 6, Fig. 7, Fig. 8 391 Klipplasche Fig. 8 393 Retaining rail Fig. 8 395 Folding hinge Fig. 7, Fig 8 423 Film carrier Fig. 9 435 Dark surface Fig. 9 437 Light surface Fig. 9 501 Light Fig. 13 509 Light space Fig. 13 511 First end or edge of the light space Fig. 13 513 Second end or edge of the light space Fig. 13 515 third end or edge of the light space Fig. 13 517 fourth end or edge of the light space Fig. 13 519 first LED Fig. 13 521 second LED Fig. 13 523 light exit surface Fig. 13 525 bright light region, in particular white Fig. 13

Light area 529 pictogram Fig. 13 531 first area Fig. 13 533 second area Fig. 13 535 first translucency area Fig. 13 537 second translucency area Fig. 13 541 second layer Fig. 13 551 Stabilizing pane Fig. 13 561 Edge of the light space Fig. 13 583 First Lens Fig. 13 587 Box Fig. 13 597 Electronics board, especially with electronic ballast Fig. 13 609 Clearance room Fig. 14 611 First end or edge of the light room Fig. 14 613 Second end or edge of the light room Fig. 14 615 Third end Edge of the light space Fig. 14 617 fourth end or edge of the light space Fig. 14 619 LED Fig. 14 623 Light exit surface Fig. 14 649 Main photon direction Fig. 14 659 Medium, in particular optically denser medium Fig. 14 671 Light beam, in particular first direct light beam Fig 14 673 light beam, in particular second direct light beam Fig. 14 675 light beam, in particular first reflected light beam Fig. 14 677 light beam, in particular second reflected light beam Fi Fig. 14 699 Reflector, in particular transverse reflector Fig. 14 B1 Rectifier, in particular bridge rectifier Fig. 12 B2 Rectifier, in particular bridge rectifier Fig. 10 B3, B4 Rectifier, in particular bridge rectifier Fig. 11 C1, C2, C3, C4 Capacitor Fig. 10 C5 , C6, C11 capacitor Fig. 11 C7 capacitor, in particular electrolytic capacitor Fig. 12 D1 diode Fig. 10 D2, D3 diode, in particular Zener diode Fig. 12 D4 LED Fig. 12 G1, G2 accumulator Fig. 12 L1 coil Fig. 10 L2 coil , in particular transformer Fig. 11 IC1 current control IC Fig. 10 IC2 microcontroller Fig. 10 IC3 shunt regulator Fig. 10 IC4 vibration generator Fig. 11 LED1, LED2, LED, especially low-voltage LED Fig. 10 LED3 LED4, LED5, LED, especially high voltage -LED Fig. 11 LED6, LED7 0K1 Photo-optocoupler, in particular as control loopback Fig. 10 0K2 Photo-optocoupler, especially as feedback isolator Fig. 11 PIN 1, PIN2 Tiller of an IC, in particular of the microcontroller Fig. 10 PRI Primä 10 Q4 transistor Fig. 11 R1, R2, R3, R4, resistor Fig. 10 R5, RN1, RN2, R9, R11 R6, R7, R8 resistor FIG. 11. FIG R12, R13 resistor Fig. 12 S3 coding switch Fig. 10 SEC secondary side Fig. 12 T1 Phototransistor, in particular as Fig. 10

Brightness meter TR1 Transformer Fig. 12 X1-2, X2-1, X2-2 Connection, in particular clamp connection for Fig. 10

Power cable X1-3, X1-4 connection, in particular clamp connection for Fig. 12

Power cable X1-5, X1-6 connection, in particular clamp connection for Fig. 11

Supply cable X1-7, X1-8 connection cable Fig. 13

Claims (22)

1. Luminaire (1, 3,101,201, 301, 501, 601) - with at least one innwandigen (7, 207) light space (9, 209, 309, 509, 609) and - with at least one illuminated light exit surface (23, 29, 229, 323 , 329, 423, 523, 529, 623) having a structured pattern (27, 29, 229, 329, 529) that has at least two regions (31, 33, 531, 533), one of which has a lower translucency (35, 535 ) and is reduced in its translucency (35, 535) by a surface (43) provided with at least two-layered (39, 41, 541) surface (43), that is to say with a first and a second layer (39, 41, 541) in that the translucency area (33, 533) with the reduced translucency (35, 535) is a double printed area, wherein the layer (41, 541) closer to the light space (9, 209, 309, 509, 609) has a higher Light reflection (75, 77) as the second layer (39), and wherein the reflected light (75, 77) to an increase of a Leuchtdic at least the second region (33, 533) is used via at least one further light reflection in the innnovation light space (9, 209, 309, 509, 609). 2. Luminaire (1, 3,101,201,301, 501, 601) according to claim 1, characterized in that the translucency region (31,531), which is provided with a higher transmittance factor, more than 400% of the luminance of the region (33, 533) with the reduced Translucency (35, 535), but preferably less than 2000% of the luminance of the range (33, 533), ideally less than 1500% and more than 550%, optimally in a ratio range between 860% and 1400% of the luminance, wherein in particular the surface (43) of the region (33, 533) with lower translucency (35, 535) at least 50% and less than 90% of the light exit surface (23, 29, 229, 323, 329, 423, 523, 529, 623) This light exit surface (23, 29, 229, 323, 329, 423, 523, 529, 623) of the luminaire (1, 3, 101, 201, 301, 501, 601) is greater than 120 cm 2 and smaller than 800 cm 2. 3. lamp (1, 3, 101, 201, 301, 501, 601) according to any one of the preceding claims, characterized in that the outward (5, 205) light-emitting side of the translucent region (33, 533) with the reduced translucency in one Green tone is printed and its inward (7, 207) light-reflecting side is printed in a white tone. 4. lamp (1, 3, 101, 201, 301, 501, 601) according to any one of the preceding claims, characterized in that in the region (31, 531) of the higher translucency (37, 537), the first and the second layer (39, 41; 541) are at least partially broken through. 5. lamp (1, 3, 101, 201, 301, 501, 601) according to claim 3 or 4, characterized in that it is at least one surface (43) to a screen ink color surface on a substrate (423, 523), preferably a film carrier (423) serving as a light exit surface (23, 523, 623) acts. 6. Lamp (1, 3, 101, 201, 301, 501, 601) according to any one of the preceding claims, characterized in that as lighting means (19, 21; 219, 221; 519, 521, 619; LED1, LED2, LED3 LED4, LED5, LED6, LED7; D4) in the luminaire (1, 3, 101, 201, 301, 501, 601) at least two, preferably spaced apart, LEDs (19, 21; 219, 221; 519, 521; , LED2, LED3, LED4, LED5, LED6, LED7; D4), which are arranged in particular on an edge (61, 561, 661) of the light space (9, 209, 309, 509, 609). 7. lamp (1, 3, 101, 201, 301, 501) according to any one of the preceding claims, characterized in that the light exit surface (23, 29, 229, 323, 329, 423, 523, 529, 623) at least partially transversely cutting in a main photon direction (49, 349, 649) of a luminous means (19, 21; 219, 221; 519, 521, 619; LED1, LED2, LED3; LED4, LED5, LED6, LED7; D4) of the luminaires (1, 3, 101 , 201, 301, 501, 601) for direct irradiation, preferably to produce a curved light emitting surface. 8. lamp (1, 3, 101, 201, 301, 501, 601) according to any one of the preceding claims, characterized in that the lamp (1, 3, 101, 201, 301, 501, 601) a stabilizing disc (51, 551) , preferably as a pointed casting, which extends beyond regions (31, 531) with higher translucency (37, 537). 9. lamp (1, 3, 101, 201, 301, 501, 601) according to any one of the preceding claims, characterized in that the light exit surface (23, 29, 229, 323, 329, 423, 523, 529, 623) in the areas (31, 531) with higher translucency (37, 537) opalescent, in particular roughened, and / or is equipped with a reflection prevention layer. 10. lamp (1, 3, 101, 201, 301, 501, 601) according to any one of the preceding claims, characterized in that the lamp (1, 3, 101, 201, 301, 501, 601) as a safety light (101, 201, 301), in particular as a single-battery luminaire (53, B1, C7, D2, D3, D4, G1, G2, PR1, SEC), can be used for emergency lighting supply. 11. lamp (1, 3, 101, 201, 301, 501, 601) according to any one of the preceding claims, characterized in that the light reflection in the innenden light space (9, 209, 509, 609) generated by a light diffuser surface (255) which preferably forms an end of the light space (9, 209, 509, 609) opposite to the first area. 12. lamp (1, 3, 101, 201, 301, 501, 601) according to any one of the preceding claims, characterized in that the layers (39, 41, 541) of the two-layer surface each have a characteristic of the luminaire type hue such as white and Include green, of which in particular the lighter color of the two shades has a non-uniform printing density of the ink layer. 13. lamp (1, 3, 101, 201, 301, 501, 601), in particular according to one of the preceding claims, characterized in that the innwandige clearance (9, 209, 509, 609) by a medium (59, 659) is formed with an optical density greater than 1.2, in which preferably a total reflection takes place at at least two opposing interfaces, wherein a Lichtaus-coupling by structuring, in the light space (9, 209, 509, 609) or at its surface is arranged takes place. 14 light (1, 3, 101, 201, 301, 501, 601) according to any one of the preceding claims, characterized in that for the reduction of, in particular parallel to the light exit surface occurring, light beam bundles at a transition surface of the light entry between two media of different optical density at least one curved or angled structuring such as a concave-shaped or convex-shaped structuring in the optically denser medium (59, 659), which are preferably introduced thermally or laser thermally mounted, and in regions (68, 70) at least two structural angles (64, 66 ) of more than 10 °, preferably less than 80 °, which face each other, in particular a surface which is spanned by a straight line forming the structure angle, with respect to a light exit from the medium (59, 659) a smaller deviation than 50 ° parallel to the light exit surface, and these areas (68, 70) of at least 10% of Luminous flux of the lamp (19, 21, 619) are traversed. 15. lamp (1, 3, 101, 201, 301, 501, 601) according to one of the preceding claims 13 to 14, characterized in that for guiding a light beam (71, 73, 75, 77, 671, 673, 675, 677) on the Medium (59, 659) with higher optical density reflection surfaces (699) are mounted, which focus the light beam (71, 73, 75, 77, 671, 673, 675, 677), in particular parallel to the light exit surface (23, 623), widen and / or include. 16 light (1, 3, 101, 201, 301, 501, 601) according to any one of the preceding claims 13 to 15, characterized in that to increase an angular range of total reflection, a medium (659) having a higher optical density than the space in front of the Light exit surface (623) is used. 17 light (1, 3, 101, 201, 301, 501, 601) according to any one of the preceding claims, characterized in that in a region of decreasing luminous flux in the light space (9, 209, 509, 609) increased light extraction due a reinforced, in particular with smaller dimensioned repetitions, structuring such as the inclusion of cracks in the structured pattern (27, 29, 229, 329, 529) takes place. 18 light (1, 3, 101, 201, 301, 501, 601) according to claim 17, characterized in that the structuring is effected by a screening of a transparent material, in particular adhesive, and / or an ink jet printing layer. 19. lamp (1, 3, 101, 201, 301, 501, 601) according to any one of the preceding claims, characterized in that within a range (31, 33, 531, 533) of a translucency (35, 37, 535, 537 ) a uniformity of the illumination is made such that a quotient of a luminance within a range (31, 33, 531, 533) of the translucency (35, 37, 535, 537) between 1.2: 1 and 3.5: 1, preferably in a range greater than 1.5: 1 and preferably in a range less than 2.4: 1, is located. 20. lamp (1, 3, 101, 201, 301, 501, 601) according to any one of the preceding claims, characterized in that in the lamp (1,3, 101, 201, 301, 501, 601) an electronic circuit (597) is present, which closes on the basis of the applied supply voltage (X1-5, X1-6) on the ambient brightness and reduces the luminosity of the lamp (1, 3, 101, 201, 301, 501, 601) when the ambient brightness decreases. 21. Light (1, 3, 101, 201, 01, 501, 601), in particular according to one of the preceding claims 6 to 20, characterized in that the LEDs (19, 21, 219, 221, 519, 521, 619 LED1, LED2, LED3, LED4, LED5, LED6, LED7, D4) are connected in series, in particular with a microcontroller (IC2), to a series circuit, in particular at a supply voltage connection (PIN1) for the microcontroller (IC2), preferably the series connection via a buck converter (D1, IC1, L1, C4) from the supply voltage refers to their operating current. 22 light (1,3, 101, 201, 301, 501, 601), in particular according to one of claims 6 to 21, characterized in that the at least one LED (LED4, LED5, LED6, LED7) one of a supply voltage of Luminaire (1, 3, 101, 201, 301, 501) galvanically isolated LED supply by means of a high-frequency transformer in, preferably resonant, half-bridge control obtained, which are preferably arranged in a non-visible area of the lamp. For this 14 sheets of drawings