LIGHTING DEVICE FOR DIRECT AND INDIRECT LIGHTING

Abstract

The present invention discloses a lighting device with an arrangement for direct and indirect lighting, consisting of a plurality of lighting devices, preferably embodied as LEDs, arranged on a first and a second lighting device holder, and a transparent central module positioned between two lighting device holders. It also comprises a method for direct and indirect lighting of rooms or workplaces, as well as a lighting device that includes the lighting device, arranged on a lighting support with a power supply.

Description

TECHNICAL AREA

[0001] The present invention relates to the field of lighting technology, in particular the development of direct and indirect lighting solutions for modern office and residential environments. The invention relates to a lighting device with an arrangement for direct and indirect lighting, consisting of several light sources, preferably LEDs, arranged on a first and a second light source holder, and a transparent central module positioned between the two light source holders. It further comprises a method for illuminating rooms or workplaces, both directly and indirectly, as well as a lighting device incorporating the lighting device, arranged on a lighting support with a power supply. STATE OF THE ART

[0002] Several lighting solutions are known from the literature that aim to achieve uniform, indirect, and direct illumination of a room or workplace. Traditional workplace lighting technology is dominated by table, tripod, or floor lamps, characterized by direct downward light emission onto work surfaces and indirect, wide-angle illumination of the room via ceiling reflection. Various approaches to achieving simultaneous direct and indirect lighting are documented in patent literature.

[0003] WO 2013 / 085935 A1 discloses a lighting solution in conjunction with acoustic sound insulation. This requires a space between the acoustic insulation and the lighting element, which significantly increases the space required for the lighting element.

[0004] WO 2004 / 102064 A1 discloses a light source consisting of several light-emitting elements, a support that holds these elements, and a pressure-resistant base element that defines the surface. The base element is mechanically connected to the support so that pressure on the surface is transferred to the support, with the support and base element forming a plate-like unit. The load-bearing zones are distributed across the entire surface of the light sources. The base element can be plate-like and have several holes corresponding to the light-emitting elements. This flat, pressure-resistant design allows for use on surfaces such as roads, airport runways, sidewalks, and building walls without posing an obstacle or safety risk. Fig. This application shows an arrangement for simultaneous direct and indirect lighting. However, the light sources are located in the center of the arrangement, which leads to problems with heat dissipation and accessibility for repair and maintenance.

[0005] Patent DE 2357269 A1 describes a transparent cover plate for exhaust air lamps with unique light-directing and / or light-diffusing structural elements. These structural elements have perforations that widen conically towards the inner side of the plate, thus enabling optimized light distribution. However, this patent specification lacks any mention of the integration of direct and indirect lighting options, nor does it disclose the use of a centrally arranged light-directing or light-diffusing structural element in such a lighting arrangement.

[0006] US Patent 6367949 B1 discloses an LED lamp assembly with a heat sink housing containing an array of LED lighting elements. The assembly consists of a housing, a circuit board connected to the housing with multiple LED receiving apertures and LED light sources, a controller for managing the lighting, a culminator with reflector cups for optimizing light distribution, and a lens cover. The reflector cups are arranged in a pattern of horizontal rows and vertical columns, and the lamp can be mounted on various supports such as a tripod, a vehicle, or a gyroscope for different applications. A disadvantage of this assembly is that a large number of different lenses and culminators are required to focus the light from the lenses.

[0007] German patent application EP 1843081 B1 discloses a lighting device with multiple openings that allows direct light diffusion through a translucent block with cones embedded on one side. However, this design does not offer the possibility of direct indirect lighting, and there is the problem of heat generation when LEDs are mounted centrally.

[0008] German patent DE 102018106199 A1 discloses a modular LED luminaire with combined direct and indirect lighting. It comprises several LED light sources on a circuit board that emit light both upwards (indirectly) and downwards (directly). The luminaire also features integrated optical and reflector elements for light control. However, a centrally arranged, one-piece light-directing or light-diffusing structural element is not mentioned.

[0009] Patent DE 102008017271 A1 describes a luminaire in which two separate light sources with two different emission directions are integrated into a recess of a partially light-guiding support. Possible embodiments include pendant, wall, or floor lamps. This arrangement allows for both direct and indirect light distribution via the support. However, no disclosure is made regarding a transparent central element with integrated optical lenses.

[0010] German patent DE 102016124257 A1 describes a luminaire with a glare control arrangement comprising a light-directing film and shielding elements. The shielding elements are arranged such that the emission angle of the indirect light component is limited to a specific value after passing through the glare control arrangement. A central element is not disclosed.

[0011] Furthermore, document DE 19917401 A1 presents alternative solutions in which LED elements are arranged between two plates with openings. Some versions integrate lenses for focusing. However, this design requires one of the plates to act as a heat sink to prevent overheating. Moreover, the need for separate focusing elements for each side significantly increases manufacturing costs.

[0012] These examples illustrate the challenges and limitations of existing solutions in lighting technology and underline the need for innovative, more efficient lighting systems. TASK

[0013] The object of the invention described herein is to provide a lighting device for direct and indirect lighting, in particular of rooms or workplaces, characterized by an advantageous arrangement in which the light path passes through a single central module and the light sources can advantageously be attached to an outer surface of the lighting device. Furthermore, it should advantageously be possible in at least some embodiments to control the lighting intensity of specific areas without relying on mechanically moving elements. SOLUTION

[0014] The problem is solved by a lighting device according to claim 1. Furthermore, the problem is solved by a method for direct and indirect lighting and a lighting device as disclosed herein.

[0015] Further advantageous designs and developments result from the subclaims and from the description with reference to the figures. GENERAL BENEFITS

[0016] With the system according to the invention, a single central module can be used to focus the light path from at least one light source through the opposite light source holder. This significantly reduces the number of lens elements required, and the sandwich construction eliminates the need for complex lens holders, as these are integrated directly into the central module, preferably in a monolithic (one-piece) design.

[0017] The ability to control individual light sources, combined with the defined aperture and the optical lens that creates a defined beam of light for each light source, means that specific areas can be illuminated without the need for a mechanical element such as a joint or similar mechanism. This enables an intuitive and error-free lighting solution. DETAILED DESCRIPTION

[0018] The invention relates to a lighting device (1.0) comprising a lighting arrangement (1.1) for direct and indirect lighting, at least comprising - a first light source holder (2.1) and a second light source holder (2.2), each comprising at least one, preferably 2 to 100, most preferably 10 to 70, light source (2.3), preferably designed as an LED, and - a transparent central module (3.0) arranged between the first light source holder (2.1) and the second light source holder (2.2), characterized by the fact that The light path of each light source (2.3) leads from the light source through the transparent central module (3.0) and the opposite light source holder, wherein the opposite light source holder has an aperture (2.4) arranged opposite each light source. This offers the technical advantage that the light sources, arranged in a sandwich construction around a central module on the light source holders, can effectively dissipate heat to the outside. Light source device

[0019] A "lighting device" or "luminaire" within the meaning of the present invention is understood to be a device designed for illuminating spaces and surfaces. This device is specifically designed to emit or direct light in such a way as to produce both direct and indirect lighting effects. The lighting device, as a whole or in its components, is functionally adapted to the lighting tasks.

[0020] For the purposes of this invention, the "first light source holder" and "second light source holder" represent the outer boundaries of the light source device, with the first light source holder preferably forming the top and the second light source holder preferably forming the bottom. The first and the second light source holders each have, preferably independently of one another, at least one, preferably 2 to 100, most preferably 10 to 70, light source, preferably configured as an LED. In a particularly preferred embodiment, the first and / or second lamp holder preferably independently comprises a number of lamps in the numerical range resulting from the combination of any two of the following endpoint values: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, and 100.This offers the advantage that the number of light sources can be adjusted to the size of the illuminated area. Through a clever arrangement of the lights on the light source holders, air cooling enables efficient operation of the listed light sources, especially LEDs, without the need for dedicated cooling.

[0021] In a particularly preferred embodiment, the lamp holder consists of a material with a high thermal conductivity, preferably a metal, and most preferably selected from aluminum, steel, magnesium, copper, or bronze. This enables efficient heat dissipation from the lamps, which increases their performance and service life. Preferably, the aforementioned materials can be alloyed and / or coated and / or painted.

[0022] In further preferred embodiments, the surface of the lamp holder can be structured or specially shaped to increase heat conduction to the environment. Such structuring could include ribs, fins, or other geometric patterns that increase the surface area and thus enable more effective heat dissipation to the surrounding air. These designs improve the passive cooling of the device and help reduce the need for additional cooling systems.

[0023] The entirety of the light sources arranged on the first and second light source holders constitutes the "light source arrangement" within the meaning of the present invention. According to the invention, this arrangement consists of at least two light sources; however, for efficient and uniform illumination, it is advantageous to provide a larger number of light sources, preferably between 2 and 100, more preferably between 20 and 80. These can preferably be controlled separately, thereby allowing control of the illumination area formed by the sum of the respective illumination cones within the meaning of the present invention.For example, switching off and / or dimming individual light sources can reduce the intensity of the light in the illuminated area, for example by 1% to 100%, or switching off and / or dimming individual light sources can illuminate a smaller area, preferably between 1% and 100% of the maximum illuminated area. This allows, for example, a work area under the lighting device to be illuminated more intensely, for example to increase the readability of documents or to reduce the intensity in an area to protect the eyes.

[0024] In the context of this invention, "light source(s)" refers to one or more units arranged directly adjacent to one another that emit electromagnetic radiation in the visible spectrum, hereinafter also referred to as light, wherein these are preferably selected from the list including LEDs, OLEDs, incandescent lamps, laser diodes, and halogen lamps, and are particularly preferably designed as LEDs (light-emitting diodes). The light sources are arranged on the light source holders such that they are offset from one another and, in combination with the apertures of the opposite holder, form the light path. This arrangement makes it possible to achieve targeted lighting effects and contributes to the efficiency and effectiveness of the light source device.

[0025] An LED (light-emitting diode) is a semiconductor light source that emits light when an electric current flows through it in the forward direction. LEDs have a long lifespan, are energy-efficient, and generate little heat. They offer a wide range of color temperatures and brightness levels and are particularly suitable for high-intensity, compact lighting devices.

[0026] Light sources according to the present invention can be arranged offset, i.e., not congruently, preferably at least at a distance greater than the spatial extent of the opposite aperture, on the light source holders, each opposite an aperture on the opposite light source holder, whereby a light path from one light source through the opposite light source holder can be realized.

[0027] Preferably, the light sources are arranged in rows on the first and / or second light source holder. This arrangement can vary, for example, between 2 and 12 rows, with each row independently comprising between 2 and 40 light sources. This row-like arrangement of the light sources enables uniform and efficient light distribution and offers the flexibility to adjust the light intensity and direction according to the specific requirements of the lighting area. In a preferred embodiment of the invention, entire rows of light sources can be controlled simultaneously. This allows for simplified control and adjustment of the lighting for specific areas.

[0028] In a preferred embodiment of the present invention, the light sources are arranged in concentric circles to enable focused illumination for precision work or to highlight central objects.

[0029] In another preferred embodiment, the light sources are arranged in rows, which is ideal for illuminating long work areas such as workplaces or workbenches to ensure comprehensive and uniform illumination.

[0030] In an alternative preferred embodiment, the light sources are arranged in grid or wave patterns that are both aesthetically pleasing and functional in order to achieve a wide and uniform distribution of light over larger areas.

[0031] Furthermore, in preferred embodiments, free arrangements, also referred to as random arrangements, are possible in which the lighting device can be adapted to aesthetic designs or highly specialized lighting requirements, e.g., special workshops such as watchmaking or limited spaces. Central module

[0032] In a preferred embodiment of the lighting device, the transparent central module provides an optical lens (3.1) for each light source, preferably spatially separated. This enables efficient and targeted light provision.

[0033] For the purposes of this invention, a "transparent central module" is defined as a central element of the lighting device, arranged between the two light source holders and preferably covering the entire surface of the light source holders, but at least all light sources. This module is highly transparent and serves the purpose of efficiently transmitting, directing, and modulating light from the light sources. In a preferred embodiment, the central module can be implemented as a lens cluster consisting of a plurality of optical lenses to focus, distribute, and / or diffuse the light beams, thereby achieving optimized luminous efficacy and targeted, modulated illumination of a surface located in the light path. In another preferred embodiment, the central module is manufactured as a single piece.This configuration allows the light, in combination with the aperture, to form a defined cone of illumination, resulting in targeted and controllable lighting.

[0034] Within the scope of this invention, the "transparency" of the central module is defined as its transmittance for the visible light range, hereinafter assumed to be between 400 nm and 800 nm wavelength. The transparent central module must therefore transmit a high percentage of this light spectrum, meaning that it allows at least 80%, but preferably 90%, of the light radiation in the defined range to pass through.

[0035] Within the scope of the invention, the central module can be made of various transparent materials, preferably selected from the list comprising polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), cycloolefin copolymer (COC), cycloolefin polymer (COP), polystyrene (PS), polyurethane (PU), glass, and quartz glass, but particularly preferably of polymethyl methacrylate. Each of these materials possesses specific properties, such as light transmission, durability, and processability, which are essential for the function and aesthetics of the lighting device.

[0036] A preferred embodiment of the present invention includes a one-piece transparent central module. "One-piece" in this context means that the module is manufactured from a single, uninterrupted piece of material, which greatly reduces the manufacturing effort for the central module, particularly for embodiments in which the central module has a large number of optical lenses, also referred to as lens clusters.

[0037] A preferred embodiment of the present invention includes a transparent central module comprising a plurality of optical lenses, preferably plano-convex lenses. The module is made of a transparent plastic, preferably polymethyl methacrylate (PMMA), and is designed as a one-piece injection-molded module. This particular combination enables the bidirectional focusing of light emitted by light sources on different light source holders. This embodiment represents an innovation not previously shown in the prior art, as it can be manufactured efficiently and cost-effectively while simultaneously offering improved functionality in light control.

[0038] In the context of this invention, an “optical lens”, also simply referred to as a “lens”, is understood to be an element that focuses or scatters light rays by refraction. The optical lens is preferably implemented as a converging lens, particularly preferably as a biconvex, plano-convex or concave-convex converging lens, or as a diverging lens, particularly preferably as a biconcave, plano-concave or convex-concave diverging lens.

[0039] According to the invention, the interaction between the optical lens, with its distance to the light source (significantly smaller than the lens itself), and its distance to the aperture, enables the lens to generate a defined illumination cone. This illumination cone is crucial for a lighting solution that aims to create a precisely defined and efficient illumination area.

[0040] A preferred embodiment of the present invention comprises a lighting device in which optical lenses of the central module, configured as converging lenses, are arranged at a defined distance from the light sources. This arrangement enables effective focusing of the light, particularly in conjunction with the aperture of the first or second light source holder. The distance between the lenses and the opposing apertures is precisely calibrated to control the light distribution. This configuration generates a defined cone of illumination, allowing for targeted and efficient lighting. This synergistic effect of the components opens up a wide range of possibilities for precise and adaptable lighting, especially in modern work environments. Lighting cone and controllability

[0041] In a preferred embodiment of the lighting device according to the present invention, a defined illumination cone is provided by the arrangement of an optical lens, the aperture, and the light source, wherein the illumination cone is the area on a surface arranged perpendicular to the light source in which the light intensity is more than 20% of the maximum intensity, as determined by photometric measurements. In this way, a defined area can be illuminated, and dynamic illumination is possible through the targeted arrangement and controllability of individual light sources.

[0042] Within the scope of this invention, a "defined illumination cone," also referred to as a lighting cone, is understood as a light propagation area created by the interaction of the optical lenses, apertures, and light source. This cone is designed to illuminate an area on a surface perpendicular to the light source, which is bounded by the area where the light intensity is low, preferably less than 10%, preferably less than 20%, of the maximum intensity. The shape and size of the illumination cone can be determined by photometric measurements and adapted to specific lighting requirements.

[0043] Within the scope of this invention, each individual light source can be assigned its own defined illumination cone, so that each light source has an individual illumination cone. An "illumination area" within the meaning of the present invention comprises the plurality of these individual illumination cones and illuminates a defined area below or above the light source device. The illumination area is designed to illuminate an area on a surface perpendicular to the light source device, which is bounded by the area in which the light intensity is low, preferably less than 10%, preferably less than 20%, of the maximum intensity. The intensity or spatial extent of the illumination area can advantageously be varied by dimming and / or switching individual light sources on and off.For example, the lighting area can have an intensity gradient, enabling a flexible and adaptable lighting solution.

[0044] In some preferred embodiments of the invention, at least two light sources arranged on one and / or both (the first and the second) light source holders can be controlled independently of one another. This independent control allows for flexible adjustment of the light intensity and direction of each individual light source, particularly in relation to the defined illumination cone of the respective light sources. This functionality is especially advantageous for creating different lighting scenarios and contributes to energy efficiency, since individual light sources can be activated or deactivated as needed. It is advantageous that no mechanical elements are required to change the illumination area.

[0045] In a preferred embodiment of the invention, at least two light sources are arranged on one of the light source holders and connected to each other by an electrical connector. This arrangement enables efficient use of the space on the holder and optimized light distribution. The electrical connector ensures a reliable power supply and allows for dedicated control of individual or multiple light sources.

[0046] Electrical connections in the context of light sources are components used for power transmission between individual light sources and other electrical components of the luminaire. These connections are preferably selected from a list including conductive traces, through-hole mounting, flexible printed circuit boards, cable connections, or wire bonding. This configuration allows for flexible connection of the light sources in various patterns, such as in rows or concentric circles, according to the present invention. Furthermore, it supports controllability through methods that allow direct contact on the light source holder, thus enabling versatile and efficient design of lighting arrangements.

[0047] In a preferred embodiment of the invention, a larger number of light sources are arranged on the second light source holder, which is preferably located on the underside of the light source device and thus enables indirect lighting, e.g., by illuminating a ceiling, than on the first light source holder. For example, 1.1 to 5.0 times, preferably 1.1 to 2.5 times, as many light sources can be placed on the second holder as on the first holder. This arrangement enables efficient indirect lighting of a room by providing a higher luminous intensity for indirect than for direct lighting, which contributes to the efficiency and effectiveness of the light source device. In particular, the light source device can thus be optimized for different applications and room sizes, e.g.,as a table lighting device for placement on a table surface or as a room lighting device that has a suitably dimensioned lighting support, such as a stand or a lamp tripod.

[0048] In a preferred embodiment of the present invention, the lighting device is equipped with a sensor. The sensor can be selected from a list that includes motion, brightness, and distance sensors. The sensor enables intelligent control of the lighting, for example, by automatically adjusting the light intensity based on the ambient brightness or by activating the lighting upon motion detection. Motion sensors detect physical movements in the vicinity of the light and can be used to automatically switch on or adjust the lighting when people are in the room, thus contributing to energy savings. Distance sensors, for example, ultrasonic or laser sensors, measure the distance to objects in their environment.They can be used, for example, to regulate the lighting as objects or people approach or move away from the light fixture, or to dim and / or switch light sources on and off to adjust the brightness to the distance of the surface to be illuminated or the room to be indirectly lit. Brightness sensors (light sensors) measure the ambient brightness and allow the lighting device to adjust the light intensity accordingly to ensure consistent illumination or to save energy. This contributes to the energy efficiency and user-friendliness of the lighting device.

[0049] Another preferred embodiment includes a lighting device comprising a light source and a lighting carrier that provides a power supply. This combination enables a versatile and functional lighting solution.

[0050] In an extended preferred embodiment, the lighting device comprises not only the light source and a power supply unit, but also offers extended functionality through additional elements. The light support unit can provide controls for adjusting the light intensity and direction, sensors for automated light control based on motion or ambient light, feet for easy placement, ceiling mounts for installation as a ceiling light, adjustment elements for fine-tuning the light position, and height adjustment elements for variable light direction. This versatility enables precise and needs-based lighting in various applications.

[0051] Various versions of the lighting device are specifically designed for use as table, room or ceiling lighting, with the lighting support designed accordingly as a table stand, base or ceiling mount.

[0052] In a preferred embodiment of the invention, the light source device is designed as a table lighting device with a table stand. This configuration enables optimal illumination for working and reading activities on table surfaces and offers the advantage of easy placement and mobility.

[0053] In another preferred embodiment of the invention, the lighting device is designed as a room lighting device with a stand. This allows for flexible positioning in the room and supports individual room design and lighting adjustment without permanent installations.

[0054] Finally, in a preferred embodiment of the invention, the lighting device is configured as a ceiling lighting fixture, wherein the lighting support is designed as a ceiling mount and / or a ceiling pendant and / or other means. Various ceiling mountings suitable for lighting devices (lamp heads) are known to those skilled in the art; the embodiments disclosed here advantageously allow the distance between the lighting device and the illuminated surfaces, in particular the ceiling (indirect lighting) and the room below (direct lighting), to be adjusted. This design maximizes the illumination range and is ideal for comprehensive and uniform illumination of rooms. method for lighting

[0055] The invention further relates to a method for direct and indirect illumination of a room and / or workplace by means of a lighting device (1.0) according to the present invention, wherein the first lighting holder (2.1) provides direct illumination with a defined illumination area (4.1) and the second lighting holder (2.2) provides indirect illumination. In a preferred embodiment of the method for direct and indirect illumination, the intensity of the defined illumination area (4.1) can be varied by controlling individual lighting devices (2.3).

[0056] Advantageously, a control element, provided either by the light source itself or by the lighting fixture, as well as sensors – preferably selected from motion, brightness, and distance sensors – can be used to control the lighting area. For example, a motion sensor can automatically illuminate an area, such as under a held hand, or a control element, such as a touchpad on the lighting fixture, can be used to activate individual light sources or groups of them. This allows the lighting area, which is composed of the individual lighting cones, to be precisely adjusted.

[0057] Preferred embodiments of the invention are described below. EXAMPLES OF EXECUTION

[0058] Examples of implementation are shown below. Fig. Figure 1 shows a cross-section through a lighting device according to the invention. Fig. Figure 2 shows a cross-section in oblique view through a lighting device according to the invention. Fig. Figure 3 shows an exploded view of a lighting device according to the invention. Fig. Figure 4 shows an embodiment of the light source device (1.0) as a table lighting device comprising a table stand as a lighting carrier (6.0). Fig. Figure 5 shows an embodiment of the light source device (1.0) as a lighting device comprising a lighting carrier (6.0) and a defined lighting area (4.1). Fig. Figure 6 shows an embodiment of the light source device as a ceiling lighting device, wherein the lighting support (6.0) is designed as a ceiling mount.

[0059] In Fig. Figure 1 shows a cross-section through a lighting device according to the invention, wherein in this specific embodiment 4 lighting elements (2.3) are arranged in a row on the first lighting element holder (2.1), here representing the top side, and 5 lighting elements (2.3) are arranged on the second lighting element holder (2.2), here representing the bottom side. Opposite each lighting element is an aperture (2.4) and an optical lens (3.1), which is provided by the central module (3.0), in this example manufactured in one piece, which together with the lighting element form the illumination cone (4.0), which can be individually aligned and designed for each light source.

[0060] Fig. Figure 2 shows a further cross-section through a lighting device according to the invention, which in its basic structure can also be used in Fig. Figure 1 could be shown. This shows how the central module (3.0) is arranged in a sandwich construction between the first lamp holder (2.1) and the second lamp holder (2.2), as well as the arrangement of the lamp (2.3), optical lens (3.1), and aperture (2.4). This represents Fig. 2 also shows again the path of the light according to the invention, starting from the light source through the optical lens and the aperture.

[0061] In Fig. Figure 3 shows a further exemplary assembly of a lighting device according to the invention. The exploded view shows a first lighting holder (2.1) and a second lighting holder (2.2), between which the central module (3.0), which is designed as a single piece here, provides an optical lens (3.1) for each lighting element (2.3). The lens module is shown here as an example made from a polyacrylic block using injection molding. Furthermore, the lighting elements are connected on the upper side of the second lighting holder (2.2) shown here by an electrical connector (5.0).

[0062] Furthermore, in Fig. Figure 4 shows an embodiment of the light source device (1.0) as a table lighting device comprising a table stand as a lighting support (6.0). The second light source holder has a higher number of light sources than the first light source holder, the first light source holder having a corresponding number of apertures.

[0063] In Fig. Figure 5 shows a lighting device (1.0) according to the invention, comprising a lighting carrier (6.0). It is shown by way of example how the defined lighting area (4.1) is illuminated by switching individual or grouped lighting devices on and off or by controlling them. A defined lighting area can be located directly below the lighting device ( Fig. 5C), left only ( Fig. 5A) or right ( Fig. 5B) the light source device or the entire area ( Fig. 5D) illuminated.

[0064] In Fig. Figure 6 shows an exemplary embodiment of the lighting device as a ceiling lighting device, wherein the lighting support (6.0) is designed as a ceiling mount. The light sources are arranged in concentric circles. REFERENCE MARK LIST (1.0) Light source device (1.1) Light source arrangement (2.1) first light bulb holder (2.2) second light bulb holder (2.3) Light sources (2.4) Aperture (3.0) Central module (3.1) Optical lens (4.0) Lighting cone (4.1) Lighting area (5.0) electrical connector (6.0) Lighting carrier

Claims

[1] Lighting device (1.0) comprising a lighting arrangement (1.1) for direct and indirect lighting, at least comprising - a first light source holder (2.1) and a second light source holder (2.2), each comprising at least one light source (2.3), as well as - a transparent central module (3.0) arranged between the first light source holder (2.1) and the second light source holder (2.2), characterized by the fact that the light path of each light source (2.3) leads from the light source (2.3) through the transparent central module (3.0) and the opposite light source holder (2.2), wherein the opposite light source holder (2.2) has an aperture (2.4) arranged opposite each light source (2.3), and wherein the transparent central module (3.0) provides an optical lens (3.1) for each light source (2.3), and the transparent central module (3.0) is designed as a single piece. [2] Lighting device according to claim 1, wherein a defined illumination cone (4.0) is provided by the arrangement of the optical lens (3.1), the aperture (2.4) and the light source. [3] Lighting device according to one of claims 1 or 2, wherein the transparent central module (3.0) is preferably selected from the group consisting of polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), cyclo-olefin copolymer (COC), cyclo-olefin polymer (COP), polystyrene (PS), polyurethane (PU), glass and quartz glass. [4] Light source device according to one of claims 1 to 3, wherein at least two light sources (2.3) can be controlled independently of each other, preferably wherein at least two light sources (2.3) arranged on a light source holder (2.2) can be controlled independently of each other. [5] Lighting device according to one of claims 1 to 4, wherein at least two light sources (2.3) are arranged on a light source holder (2.1), wherein the light sources are connected by an electrical connecting means (5.0). [6] Lighting device according to one of claims 1 to 5, wherein the lighting elements (2.3) are arranged in concentric circles. [7] Light source device according to one of claims 1 to 6, wherein the first light source holder (2.1) or second light source holder (2.2) has a row, preferably between 2 and 12 rows of light sources (2.3), wherein a row has at least 2 light sources (2.3), preferably between 2 and 40 light sources (2.3). [8] Lighting device according to one of claims 1 to 7, comprising a sensor, wherein the sensor is preferably selected from the list comprising motion, brightness, distance sensor. [9] Method for direct and indirect illumination of a room and / or workplace by means of a light source device (1.0) according to any one of claims 1 to 8, wherein the first light source holder (2.1) provides direct illumination with a defined illumination area (4.1) and the second light source holder (2.2) provides indirect illumination. [10] The method according to claim 9, wherein the intensity of the defined illumination area (4.1) can be varied by controlling individual light sources (2.3). [11] Lighting device comprising at least - a light source device (1.0) according to one of claims 1 to 8, arranged on - a lighting carrier (6.0) comprising a power supply. [12] Table lighting device comprising a lighting device according to claim 11, wherein the lighting support (6.0) is designed as a table stand. [13] Room lighting device comprising a lighting device according to claim 11, wherein the lighting support (6.0) is designed as a stand. [14] Ceiling lighting device comprising a lighting device according to claim 11, wherein the lighting support (6.0) is designed as a ceiling mount and / or as a ceiling pendant and / or rope.

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