LIGHTING AND USE

Abstract

A lamp (1) with a radiation exit surface (2) is specified, the lamp comprising a housing part (3) with a receptacle (9), at least one organic optoelectronic component (5) which is arranged in the receptacle, and at least one cover part (4) connected to the body part, with the component being held between the cover part and the body part. Furthermore, a use of at least one connection part for a jack plug connection as an external electrical connection part of a light source with an organic optoelectronic component is specified.

Description

[0001] A light source and the use of an element for a light source are specified.

[0002] Light sources are of great importance, especially in the context of general lighting, for example for fitting luminaires, such as lamps, with a light source as a radiation-generating element.

[0003] One task to be solved is to specify a new light source, in particular an improved light source. Furthermore, an element for a light source should be specified which offers particular advantages when used in the light source.

[0004] These tasks are solved, among other things, by the subject matter of the independent patent claims. Further advantageous embodiments are the subject matter of the dependent claims.

[0005] Apart from the claimed teachings, the present disclosure may contain further teachings that also solve one of the aforementioned problems. The present disclosure is therefore not to be considered limited to the subject matter of the claims.

[0006] According to at least one embodiment, a light source with a radiation emission surface is specified. Radiation generated in the light source, preferably visible, can exit the light source through the radiation emission surface.

[0007] According to at least one embodiment, the light source comprises a housing part. The housing part may include a recess. A radiation-generating element for the light source may be arranged in the recess. The recess may be rimmed, particularly around its circumference. Advantageously, the housing part can protect internal elements of the light source, such as electrical contacts of the radiation-generating element, from harmful external influences. The housing part may form at least a portion of the outer surface of the light source.

[0008] According to at least one embodiment, the light source has a cover part. The cover part is preferably connected to the housing part, for example, detachably or permanently. The cover part can form at least part of the outer surface of the light source.

[0009] According to at least one embodiment, the light source comprises a radiation-emitting or optoelectronic component that is expediently suitable for generating radiation. The component can be tile-shaped. The component can be an organic component, such as an organic light-emitting diode (OLED). The organic component preferably comprises organic functional material that, when supplied with appropriate electrical power, generates electromagnetic radiation, preferably in the visible spectral range. The component can have a radiation-emitting surface. This surface can form the radiation-emitting surface of the light source. The radiation-emitting surface of the component can therefore form an outer surface of the light source.

[0010] According to at least one embodiment, the component is arranged in the receptacle of the housing part. The component can be inserted into the receptacle. The receptacle of the housing part can be shaped according to the component. The receptacle can be shaped such that, when the component is arranged in the receptacle, relative movement, in particular relative rotation, between the housing part and the component is limited or prevented. This can be achieved by appropriately shaping the receptacle in accordance with the shape of the component, for example, by corresponding edges in a border defining the receptacle.

[0011] According to at least one embodiment, the component is held between the cover part and the housing part. If the cover part is connected to the housing part, a retaining space can be formed between the cover part and the housing part, in which a portion of the component can be arranged. For example, a retaining groove can be formed between the housing part and the cover part. The retaining space can extend around the entire circumference of the component. If the cover part is detachably connected to the housing part, the cover part can be removed from the housing part and the component can be taken out of the housing part, if necessary. A defective component can thus be easily replaced.

[0012] The cover plate can conceal electrical and / or mechanical elements of the light source, such as fasteners or electrical wiring, that would otherwise be exposed in the recess. The covered elements are thus protected from harmful external influences, such as mechanical stress. Furthermore, electrical and mechanical elements are often aesthetically unappealing. The cover plate therefore enhances the aesthetic appeal of the light source. The cover plate can cover the entire recess, except for the light-emitting surface of the component, and preferably also a raised edge of the housing surrounding the recess. The cover plate can be flush with the housing on the outside.

[0013] According to at least one embodiment, the light source has a maximum thickness of 8 mm or less. By means of the mounting of the component between the cover part and the housing part, a particularly flat light source can be provided. The light source can, in particular, have a thickness that is one-quarter or less, preferably one-fifth or less, such as one-sixth or less, of a lateral dimension, for example, the diameter, of the radiation emission surface of the light source. Accordingly, the light source can be implemented as a planar light source.

[0014] According to at least one embodiment, the cover plate has a recess in a radiation transmission area. This allows the cover plate to be selected independently of its optical properties with respect to the radiation generated in the light source. Within this radiation transmission area, radiation can pass through the cover plate unhindered. The cover plate may have a central recess. The cover plate may be ring-shaped when viewed from above.

[0015] According to at least one embodiment, the housing part is recessed. The housing part can be recessed in the area of ​​the receptacle. Advantageously, the housing part is recessed in an area that overlaps with, or is even completely covered by, the radiation transmission area of ​​the cover part. If both the housing part and the cover part are recessed, a recess can be visible both from the front of the light source with the radiation emission surface and from the rear, where, for example, the back of the radiation-emitting component or an element connected to it may be exposed. The external appearance of the light source, especially when switched off, can thus be partly determined by the component or elements connected to it.

[0016] According to at least one embodiment, the housing part, particularly in the area of ​​the receiver, is free of recesses. If the housing part is not recessed, it can obscure other elements that are less aesthetically pleasing than the housing part itself.

[0017] According to at least one embodiment, the cover part is designed to be electrically conductive.

[0018] According to another embodiment, the cover part is designed to be thermally conductive. The cover part can therefore be used to dissipate waste heat from the component.

[0019] According to at least one embodiment, the cover part is magnetic, in particular ferromagnetic. The cover part can be detachably attached to the housing part by magnetic forces.

[0020] According to at least one embodiment, the housing part is designed to be electrically insulating.

[0021] According to at least one embodiment, the housing part has one or more connecting means for connecting to, and in particular securing, the cover part. The respective connecting means can be designed for a detachable or permanent connection. The respective connecting means is preferably designed for a mechanically stable connection. If the connection, in particular a detachable one, is achieved via magnetic forces, it can be advantageous to provide one or more magnets as connecting means. These magnets can be distributed around the perimeter of the housing part. For a permanent connection, corresponding locking devices can be provided on the cover part and the housing part as connecting means. The locking connection formed between the locking devices is then a permanent connection, i.e., a connection that cannot be broken without destroying one of the connecting means.

[0022] According to at least one embodiment, the light source has one or more, for example two, external electrical connection parts. Each connection part can be provided for the electrically conductive connection of the light source to an external power source. Electrical power can be supplied to the component via the connection part. The connection part can also be provided for connection to a DC voltage source. The connection part can be held in the housing and be accessible from the outside. Advantageously, the connection part is electrically connected to an electrical contact of the component. The component can have more contacts than the light source has external electrical connection parts. In particular, the component can have more contacts of one polarity – anode or cathode – than the light source has external connection parts for that polarity.In particular, two electrical contacts of the same polarity can be connected to a common terminal via suitable electrical connections within the light source and electrically connected to it.

[0023] According to at least one embodiment, the respective external electrical connection part is designed as a connector for an electrical plug connection. One of the connection parts can be designed as a male connector, for example, a plug, and the other as a female connector, for example, a socket, of an electrical plug connection. Connectors are familiar even to the uninformed user, such as the end consumer, and can be operated by them in a simple manner. Accordingly, connectors are particularly suitable for the electrically conductive connection of the light source to the luminaire. The respective connection part can, for example, be designed as a connector for a jack plug connection. The respective connector for the plug connection can be designed as a single-pole connector. In this case, the respective connection part is preferably designed for one polarity.However, it is also conceivable to combine two polarities in one connector, for example in a two-pole jack plug. Two different connectors for different polarities offer the possibility of electrically and preferably also mechanically connecting multiple light sources to each other via the connectors before the then unused terminals are connected to a power source.

[0024] According to at least one embodiment, two external electrical connection parts are arranged at two opposite, preferably diametrically opposed, positions when viewed from above the radiation emission surface of the light source.

[0025] According to at least one embodiment, two connecting parts are aligned along an axis that can extend through both connecting parts. In particular, the insertion direction for forming a plug connection with the respective connecting part can extend along this axis. Both connecting parts can lie on the axis. If the connecting parts are aligned along an axis, the light source installed in the luminaire, whose two connecting parts are connected to terminals of the luminaire, can still be moved, in particular rotated, about this axis. The connecting parts can thus form part of a rotary bearing for the light source in the luminaire. The elongated connecting parts for a jack plug connection are particularly suitable for alignment along the axis. Since jack plugs do not have a rotation lock, rotation is also ensured.

[0026] According to at least one embodiment, the light source has a holding device. The holding device and a connecting element can be aligned along a common axis. This axis can extend through both the holding device and the connecting element. Viewed from above the light-emitting surface of the light source, the connecting element and the holding device can be arranged in two opposite, preferably diametrically opposed, positions. The connecting element can be designed as a two-pole connector for a plug connection, for example, a jack connector, such as a plug or socket. The holding device can be designed for connection with a retaining element of a luminaire to hold the light source in the luminaire.This connection, which is preferably mechanically stable, allows a relative rotation between the holding element and the holding device when they are connected to each other.

[0027] According to at least one embodiment, the radiation-emitting component has a plurality of electrical contacts of the same polarity. Furthermore, the component preferably has at least two contacts of different polarities.

[0028] According to at least one embodiment, the light source comprises a conductor section. The conductor section preferably has at least one or a plurality of connecting conductors. Each connecting conductor can connect a contact of the component to an external electrical connection point of the light source. Several contacts of the same polarity can be connected to a common external electrical connection point of the light source via connecting conductors of the conductor section. This allows contacts of the same polarity to be connected to a common connection point. The number of connections required for electrical contacting is thus advantageously reduced compared to a light source where each contact must be connected externally separately. The connecting conductors of the conductor section for different polarities are expediently electrically isolated from one another to prevent short circuits.

[0029] According to at least one embodiment, the conductor part is mechanically connected to the component via a bonding layer. The bonding layer is, for example, electrically insulating.

[0030] According to at least one embodiment, the conductor part is electrically connected to the component via an electrically conductive layer, preferably an anisotropically electrically conductive layer. The aforementioned connecting layer can be different from the electrically conductive layer.

[0031] According to at least one embodiment, the respective external electrical connection part is electrically conductive and preferably mechanically connected to the conductor part, in particular via a solder joint. A solder joint is characterized by particularly high mechanical stability.

[0032] According to at least one embodiment, the conductor part is a flexible conductor part, such as a flexible printed circuit board (PCB), or comprises one. A flexible PCB, particularly one with a film as a substrate for the PCB conductors, is especially suitable for forming thin light sources.

[0033] According to at least one embodiment, the cover part has one or more fixing elements. Each fixing element is preferably designed and arranged to secure one of the connection parts against movement relative to the housing part, particularly when the cover part is connected to the housing part. The fixing element can be designed as a projection of the cover part. The fixing element can be located further from an edge of the housing part than a portion of a connection part that is arranged between the fixing element and the housing part. Accordingly, this connection part can be held between the fixing element and the housing part. The fixing element advantageously prevents the connection part from slipping into the receptacle of the housing part when connected to a luminaire, for example, by plugging it in. Preferably, each connection part is associated with a fixing element.

[0034] According to at least one embodiment, the cover part has one or more thermal contact elements. The cover part can be thermally connected to the component via the respective thermal contact element. This allows waste heat from the component to be transferred to the cover part and dissipated to the environment via the cover part. This can increase the component's service life.

[0035] According to at least one embodiment, a thermally conductive element, for example a thermally conductive film, is arranged on the component and thermally connected to the component. The thermally conductive element can have a thermal connection surface. Viewed from above, the thermal connection surface can be located next to the radiation emission surface. The thermal connection surface can be thermally connected to a thermal contact element of the cover part. The thermally conductive element can have a large surface area.

[0036] It can completely cover the component. The heat-conducting element allows heat to be distributed homogeneously across the component's surface. Temperature fluctuations across the component, as viewed from the radiation-emitting surface, which could cause fluctuations in the emitted luminance distribution, can thus be reduced or avoided.

[0037] According to at least one embodiment, the cover part and / or the housing part is opaque.

[0038] According to at least one embodiment, the use of at least one connecting element for a jack connector is specified. The connecting element is preferably used as an external electrical connection for a light source with a, preferably organic, optoelectronic component. As explained above, a jack connector offers particular advantages, especially with planar components such as OLEDs.

[0039] According to a preferred embodiment, a light source with a radiation emission surface is specified, wherein the light source comprises: – a housing part with a receptacle, – at least one organic optoelectronic component arranged in the recording, and – at least a cover part that is connected to the housing part, wherein the component is held between the cover part and the housing part.

[0040] Further advantages, beneficial designs and expediencies will result from the following description of the exemplary embodiments in conjunction with the figures.

[0041] Fig. 1 and Fig. Figure 2 shows various schematic oblique views of a light source according to an exemplary embodiment.

[0042] Fig. 3 and Fig. Figure 4 shows various schematic oblique views of a housing part for the light source.

[0043] Fig. 5 and Fig. Figure 6 shows various schematic oblique views of a cover part for the light source according to the embodiment.

[0044] Fig. Figure 7 shows a module for the light source with an optoelectronic component according to the exemplary embodiment.

[0045] Fig. 8 and Fig. Figure 9 shows various schematic oblique views of the component for the module according to the embodiment.

[0046] Fig. Figure 10 shows a conductor part for the module and electrical connection parts for the module for attachment to the conductor part according to the embodiment.

[0047] Fig. Figure 11 shows a schematic top view of a heat conducting element for the module according to the embodiment.

[0048] Fig. Figure 12 shows, using a schematic sectional view of a part of the light source, the thermal connection between the cover part and the component according to the exemplary embodiment.

[0049] Fig. Figure 13 shows, using a schematic sectional view of a part of the light source, the fixing of an electrical connection part in the light source according to the exemplary embodiment.

[0050] Fig. Figure 14 shows a top view of the light source with the cover removed, according to the embodiment.

[0051] Fig. Figure 15 shows a section of the cover part according to the embodiment.

[0052] Fig. Figure 16 shows an embodiment of a permanent connection between the housing part and the cover part.

[0053] Fig. 17 to Fig. Figure 19 shows a variation of the light source according to the embodiment shown in the Fig. 1 to Fig. 16.

[0054] Identical, similar, and similarly effective elements in the figures are provided with the same reference symbols.

[0055] In the Fig. 1 and Fig. 2 is a light source 1 schematically represented. Fig. Figure 1 shows an oblique view of one side of the light source. 1 with a radiation emission surface 2 This side is also referred to herein as the front page. Fig. Figure 2 shows a schematic oblique view of a radiation emission surface. 2 far side of the light source 1 , which is also referred to herein as the reverse side.

[0056] The light bulb 1 a housing part 3 and a cover part 4 on. Furthermore, the light source includes 1 an optoelectronic component 5 The component 5 is preferably designed as an organic electroluminescent device, for example as an organic light-emitting diode (OLED). The organic electroluminescent device expediently comprises organic functional material which emits radiation, preferably radiation in the visible spectral range, when subjected to appropriate electrical power.

[0057] The cover part 4 covered, especially on the front, preferably those within the housing part 3arranged elements of the light source 1 , expediently apart from the radiation emission surface 2 , which are through the radiation emission surface of the component 5 can be formed. The cover part 4 The cover can be designed with a central recess, for example ring-shaped, when viewed from above the radiation emission surface. The cross-section of the cover can change in the direction of the recess. 4 to taper. For example, the cover part can 4 It should be rounded towards the recess. This improves the overall aesthetic appearance. The cross-section of the cover piece 4 It can also taper outwards (not explicitly shown).

[0058] The cross-section of the housing part 3 It can taper towards the outside. This can be suitable for creating a thinner overall impression of the light source. 1 to awaken. The housing part 3can be used just like the cover part 4 The recess should be recessed and, in particular, ring-shaped when viewed from above. Preferably, the recess covers the cover plate. 4 those of the housing part 3 Complete. The rear recess can therefore be smaller than the front recess. Even when the light is switched off, the size ratio indicates to the user that radiation passes through the larger of the two recesses during operation. This prevents unwanted glare due to an incorrect orientation of the radiation emission surface.

[0059] Alternatively, the two recesses can be identical when viewed from above.

[0060] Towards the recess of the housing part 3 Its cross-section can taper towards the end, with the increase in curvature preferably being greater in the direction of the recess than in the direction of the outer edge of the cover part. 4. Due to a profile of the housing part that is rounded towards the outer edge 3 and preferably the cover part 4 A thinner overall impression can result from the light source 1 to be realized.

[0061] The light bulb 1 It can have a maximum thickness of 8 mm or less, for example, approximately 6 mm. The user may experience discomfort due to the aforementioned shape of the housing part. 3 and preferably the cover part 4 The impression is given that the light source is even thinner.

[0062] The cover part 4 The outer surface is preferably essentially flat. In the housing part 3 Externally, one or more surveys can be conducted. 6 The surveys are planned. 6 are preferably aligned along a common axis that can extend through these elements. A survey 6can be provided in an area of ​​the outer surface where a connection part (see below) is located in the housing part 3 arranged and led out of the interior of the housing part.

[0063] The light bulb 1 It still has at least one external electrical connection part. 7 In the illustrated embodiment, the light source has two electrical connection parts. Besides the connection part... 7 is another connection part 8 provided. The external electrical connection parts 7 and 8 are preferably designed for different polarities. One of them can serve as the anode connection and the other as the cathode connection for contacting the electrical contacts of the component. 5 be provided. Via the respective electrical connection part 7 , 8 can the component 5Electrical power is supplied. The respective connection part 7 , 8 It may be designed for connection to a DC voltage source.

[0064] The respective external electrical connection part 7 or 8 It is designed as a connecting part for an electrical plug connection. The respective connecting part can be designed as a standard connector. The connecting part 7 In the present case, it is designed as a male part for a plug connection, while the connecting part 8 as the female part of a plug connection 8 is trained. The additional connecting part is expediently 8 designed in such a way that it has a plug connection with another connection part of another light source, which according to the connection part 7 is shaped, could be incorporated. A series circuit of several described light sources. 1This makes it easier.

[0065] The external electrical connection parts shown 7 and 8 are designed for a jack plug connection, with the connecting part 7 a plug and the connector 8 a socket. A jack connector has the advantage that, when the jack connector is in place, the light source can still be rotated relative to the elements contacted by the connector. Preferably, the connecting parts are 7 and 8 Aligned on one axis to facilitate rotation of the light source when installed. The connection parts 7 and 8 They can be arranged at 180° angles to each other. In other words, the connection parts can be located at diametrically opposite positions on the light source. The light source 1In the illustrated embodiment, apart from the connecting parts, 7 and 8 , a substantially circular shape when viewed from above. If the light source does not have a substantially circular shape, an arrangement of the connection parts is possible. 7 and 8 Positions that are diametrically opposed to each other, in the area of ​​the light source with the largest diameter, can be advantageous to facilitate rotation of the light source when installed. Alternatively, this can be done using two electrical connection parts. 7 and 8 It may also only be an electrical connection part. 7 It may be provided for. More than two connection parts may also be provided.

[0066] In the illustrated embodiment, the connecting parts 7 and 8It is designed as a single pole, which is sufficient for contacting the two poles of a diode, such as an OLED. It is applied to the connection part. 7 or 8 If this is omitted, the remaining connection part would have to be multi-pole, e.g. two-pole.

[0067] The light bulb 1 It can be designed as a planar light source. The thickness of the light source is preferably significantly smaller than the maximum or minimum lateral dimension of the radiation emission surface. 2 of the light source 1 The lateral dimension can be the diameter, length, or width of the radiation emission surface. For example, the thickness is less than a quarter, less than a fifth, or even less than a sixth of the maximum or minimum lateral dimension.

[0068] The cover part 4 is with the housing part 3connected. The parts are connected in such a way that the component 5 between the housing part 3 and the cover part 4 It is mechanically stable. Between the housing part 3 and the cover part 4 A holding space, for example a holding groove, can be formed in which part of the component is held. 5 is arranged, for example, an edge area of ​​the component 5 , which runs alongside the radiation emission surface. The holding area is preferably provided around the perimeter.

[0069] The cover part 4 and the housing part 3 are preferably mechanically stable, for example, self-supporting. The cover part 4 and the housing part 3 Therefore, a housing for the light source component can be combined. 1The housing protects sensitive elements, such as electrical conductors, from harmful external influences. At the same time, the resulting housing can determine the overall aesthetic appearance of the light source. In particular, the housing can be designed to be more aesthetically pleasing than the component itself. 5 as such.

[0070] The Fig. 3 and Fig. 4 show the housing part 3 of the light source 1 based on oblique views. The recess in the housing part allows waste heat from the component to be dissipated into the environment without it passing through the housing material. 3 must be conducted. The thermal stress on the housing part 3 This can be reduced.

[0071] The housing part 3 shows a recording 9 on, which are used to accommodate the component 5 trained. The admission 9It preferably has a bearing surface 10 for the support of the component 5 on. The contact surface 10 The recess of the housing part can be circumferentially removed. The housing part 3 still has a border or frame 11 up. The edge 11 rises above the surface 10 Preferably the edge protrudes 11 about the radiation emission surface of the image in the recording 9 inserted component 5 out. The edge 11 limits the contact area 10 outwards. The edge 11 can the recording 9 Limit the lateral and, in particular, the circumferential boundaries. The recording 9 has a shape that corresponds to the shape of the component 5 is adapted. In particular, the component can 5and then preferably also the inlet should have an angular shape, for example a polygonal shape in plan view, such as an essentially hexagonal or octagonal shape (compare also the following regarding the component): Fig. 8 and Fig. 9) The recording 9 may have corresponding edges, so that the recording 9 inserted component 5 rotationally secured against rotation of the component relative to the housing part 3 is. Between the contact surface 10 and an inner surface of the cover part 4 can, if the cover part is connected to the housing part 3 When connected, the aforementioned holding area is formed.

[0072] From the contact surface 10 Feedthroughs for the connecting parts lead to the outside. 7 and 8 The respective implementation 12 breaks through the edge 11The respective implementation allows for a connecting part to be used. 7 or 8 from the recording 9 to be led outwards. The housing part can be accessed in the area of ​​the penetration. 3 exhibit a deeper level of detail. The respective implementation 12 is opposite to the contact surface 10 be lowered. The respective implementation 12 can be used with the contact surface 10 , for example, via an angled connection area. A recessed arrangement of the feedthrough provides space for relatively space-intensive elements, such as connectors for the connection parts.

[0073] The recording 9 It also has at least one, or in the exemplary embodiment two, bulges. 13 on, which is preferably directed outwards, for example radially outwards. The respective bulge is aligned with the bearing surface. 10preferably connected. The position of the respective bulge. 13 is preferably offset relative to the respective implementation 12 , for example, offset by 90°.

[0074] With the component inserted into the recording 5 is the respective bulge 13 preferably not covered with the component. Instead, a heat-conducting element protrudes (compare the heat-conducting element). 19 (further down) conveniently into the recess and is partially accessible there when the cover part 4 not with the housing part 3 is connected.

[0075] The housing part 3 is preferably made of electrically insulating material. The housing part may contain a plastic, for example polycarbonate (PC), acrylonitrile butadiene styrene (ABS) or polybutylene terephthalate (PBT).

[0076] In one or more areas, the transition between the support surface 10 and the edge 11 with an additional level 14 The respective step is preferably arranged in an area of ​​the receptacle where, when the component is inserted, 5 An electrical contact of the component is arranged (see the component description below). The respective contact can be located via the stage 14 extend when the component is in the recording 9 is arranged.

[0077] The edge 11 is expedient for forming the mechanically stable connection between housing part 3 and cover part 4 provided for. The edge 11 This can be done with connecting elements 15 be provided with the connecting means 15 can extend beyond the perimeter of the edge 11be distributed. This facilitates a uniformly stable mechanical fastening across the circumference.

[0078] The cover part is expediently 4 removable with the housing part 3 connected. The replacement of a component. 5 , which in the case of a defective component 5 This makes it easier, as it becomes necessary. The connecting elements 15 For a detachable connection, magnets such as permanent magnets may be included, which are preferably located in the edge 11 of the housing part 3 are recessed to avoid unnecessarily increasing the thickness of the light source. The cover part 4 It contains, preferably circumferentially, magnetic material, in particular ferromagnetic material, or consists of such material. The fastening to the housing part 3 by means of magnetic fasteners 15 This simplifies things.

[0079] The Fig. 5 and Fig. 6 each show an oblique view of the cover part 4 , once from the front ( Fig. 5), which forms part of the outer surface of the light source 1 forms, and once from the back ( Fig. 6), which is located inside the light source.

[0080] The cover part 4 has, in particular on the inside, one or more thermal contact elements 16 on. The respective contact element can be designed as a projection. The respective contact element 16 can be from a contact surface of the cover part 4 protrude, with which the cover part rests on the edge 11 rests against the housing part when connected to it. Two thermal contact elements 16 are preferably located at diametrically opposed positions on the cover plate 4 arranged. Is the cover part 4 on the housing part 3When placed and connected to this, the respective thermal contact element 16 preferably in the area of ​​a bulge 13 The respective thermal contact element is thermally connected to the component, for example via a heat-conducting element, when the housing part is connected to the cover part. Heat can be dissipated from the component to the cover part via the respective thermal contact element. 4 The heat is then transferred to the surroundings via the cover.

[0081] Preferably, the cover part comprises or consists of a material that is ferromagnetic and / or has good thermal conductivity. A material that is both thermally conductive and ferromagnetic is, for example, iron or low-alloy steel.

[0082] The cover part 4 has one or more fixing elements 17 on. The respective fixing element 17is electrically insulating. The respective fixing element can be designed as a projection. The respective fixing element 17 can be from a contact surface of the cover part 4 protrude, with which the cover part rests on the edge 11 of the housing part 3 rests on it when it is connected to it. The respective fixing element. 17 is expediently arranged and designed to prevent movement of one of the connecting parts 7 or 8 relative to the housing part, especially in the recording 9 to prevent the lid from coming into contact with the lid. 4 with the housing part 3 is connected. For example, a connector part 7 or 8 by means of the fixing element 17 on one side and on the other side of a section of the housing part, for example in a clamping fit. The fixing elements 17are preferably located in diametrically opposed positions.

[0083] Is the cover part 4 with the housing part 3 If connected, the respective fixing element is expediently located in the area of ​​the respective feedthrough. 12 arranged. Compared to the respective fixing element 17 is the respective thermal contact element 16 Preferably designed with a larger surface area. A larger surface area is a considerable advantage for thermal bonding. Mechanical stabilization of the respective connection part can also be achieved with a smaller fixing element.

[0084] Fig. 7 shows a module 18 , which is the component 5 and has one or more additional elements. The module can be prefabricated with all the elements shown and inserted into the recording as a prefabricated module. 9 of the housing part 3be inserted before the cover part 4 is connected to the housing part.

[0085] Besides the component, the module can 18 a heat conducting element 19 exhibit. The module 18 Furthermore, a conductor part can 20 exhibit. The module 18 It also features the external electrical connection parts 7 and 8 up. The ladder part 20 can be between heat conducting element 19 and component 5 be arranged on the ladder section 20 The external electrical connection parts are expediently 7 and 8 attached and connected to electrical contacts of the component via connecting conductors, which are provided on the conductor part but not explicitly shown. 5 electrically conductive connection.

[0086] The Fig. 8 to Fig. Figure 11 shows schematic representations of the individual elements of the module. 18 .

[0087] The component 5 is in the Fig. 8 and Fig. 9 shown schematically. The component 5 It can, for example, be designed as an OLED tile. The component 5 has several external contacts 21 The component has a first polarity, e.g., anode or cathode. It features multiple electrical contacts. 22 a second polarity, e.g., cathode or anode. The respective contact can be considered as the outer surface of the component. 5 The provided contact strip, which is expediently designed to be elongated, should be formed. Each contact may be radially projecting. The contacts 21 and 22 are in the Fig. 8 and Fig. 9 shown schematically.

[0088] Multiple contacts of the same polarity can homogenize the charge carrier imprinting into the organic functional material of the device. A more homogeneous charge carrier imprinting can result in a homogenized luminance distribution on the radiation emission surface. 2 effect. The component 5 The device may incorporate an optical output coupling structure, such as a scattering film or a microlens array (not explicitly shown). Furthermore, the component, or its organic functional material, is preferably protected against external influences such as moisture by means of a thin-film encapsulation. A thin-film encapsulation, which is produced, for example, by deposition, often has a lower resistance to heat transfer from the organic functional material compared to a thick encapsulation.

[0089] Fig. 10 shows the ladder part 20 and the electrical connection parts that have not yet been attached to them 7and 8 The ladder part 20 It can be recessed, for example in a central area as well as the housing part. 3 Thus, the regularly unsightly ladder section 20 from the back of the light source 1 not visible here, regardless of whether a heat-conducting element 19 whether it is intended or not. Furthermore, a recessed section of the ladder contributes to this. 20 only to a small extent contributes to thermal resistance during heat dissipation via the thermal conducting element 19 outwards. The heat-conducting element 19 can an outer surface of the light source 1 , especially the rear outer surface.

[0090] The ladder part 20 exhibits a majority of contact areas 23 , 24 Furthermore, the conductor section has a connecting conductor guide surface. 25 open. The contact areas 23are preferably for electrically conductive connection with the contacts of the first polarity 21 , the contact areas 24 for electrically conductive connection with the contacts of the second polarity 22 Provided. Via connecting conductors on the connecting conductor guide surface. 25 of the conductor part 20 (not explicitly shown), which are associated with the contact areas 23 , 24 The contacts are electrically connected, but preferably run electrically separated from each other on the conductor part, the contacts can 21 or 22 of the component 5 with the same polarity and a common electrical connection 7 or 8 can be connected. This allows the number of external electrical connection parts to be reduced compared to the number of electrical contacts of the component, from four to two in the illustrated embodiment.

[0091] The contact areas 23 and 24 can be accessed from the connecting conductor guide surface 25 of the conductor part 20 protrude. The connecting conductor guide surface 25 can the recess of the ladder part 20 The contact area can be circumferentially limited. The respective contact area can be axially offset, for example in steps, from the connecting conductor guide surface. 25 be arranged. Preferably, the respective contact area is directed radially outwards. Is the module 18 introduced into the recording, the respective contact area 23 , 24 preferably above the level 14 arranged and can rest on it.

[0092] In the module 18 can the ladder part 20 via a connection layer 35 (see Fig. 12) be bonded to the component, in particular by a material bond. The bonding layer may contain an adhesive. The bonding layer may be formed by double-sided adhesive tape. The bonding layer is expediently electrically insulating so that it insulates against the conductor part. 20 The connecting conductors must not be short-circuited. This is achieved via the connecting layer. 35 can the ladder part 20 extensively with the building element 5 can be connected. For example, the connecting conductor guide surface can be 25 of the conductor part 20 with the component 5 via the connection layer 35 mechanically connected, such as by material bonding.

[0093] The respective contact area 23 , 24The component can be electrically connected via an anisotropically conductive layer (not explicitly shown). This layer can be electrically conductive in some areas and electrically insulating in others. In the contact areas 23 , 24 to the contacts 21 , 22 of the component 5 The layer is expediently conductive to establish the electrical connection between the component and the conductor part. 20 to produce. Outside the contact areas 23 or 24 The layer is preferably electrically insulating.

[0094] The respective contact area 23 or 24The optoelectronic component can be bonded using an ACF process (also known as "bonding"). In an ACF process (ACF: anisotropic conductive film), an electrically insulating bonding agent, such as a non-conductive adhesive containing electrically conductive particles, is made conductive in selected areas by applying selective pressure and / or temperature. This is achieved, for example, by increasing the density of conductive particles, while remaining electrically insulating in other areas that are not subjected to pressure or temperature.

[0095] The ladder part 20 It also has one or more connection surfaces 26 , 27 The connection surfaces are in the module. 18 only indirectly mechanically connected to the component 5connected. In other words, the connection surfaces are free of the bonding layer. The connection surfaces 26 , 27 can be seen from above next to the building element 5 be arranged. The connecting surfaces 26 , 27 can, when viewed from above, extend radially outwards from the connecting conductor guide surface 25 protrude. The connecting surfaces 26 , 27 can be axial to the connecting conductor guide surface 25 , especially towards the back of the light source 1 to be offset. In the area of ​​the connecting surfaces. 26 , 27 are the electrical connection parts 7 or 8 with the ladder part 20 electrically conductive connection, for example soldered.

[0096] The ladder part 20can be designed flexibly, for example as a flexible printed circuit board, such as a so-called flexboard or flex-PCB (PCB: printed circuit board).

[0097] In the module 18 are the connection surfaces 26 , 27 of the conductor part 20 with the attached connecting parts 7 or 8 expediently designed to be flexible, which facilitates the insertion of the connecting parts into the feedthroughs. 12 relieved.

[0098] On the ladder part 20 An ESD protection component (not explicitly shown), such as a protection diode, can be arranged. The protection diode is expediently connected antiparallel to the optoelectronic component and preferably also connected to the terminals. 7 and 8 electrically conductive connection.

[0099] The ladder part 20The conductor part can have a film as a substrate for the conductors. The film can contain Kapton. The film is preferably thin, for example with a thickness of 350 μm or less, more preferably with a thickness of 200 μm or less. 20 can have a total thickness of 350 μm or less, preferably 200 μm or less.

[0100] The shape of the conductor part 20 , especially the outline, can be that of the building element 5 be adapted, with possible minor protrusions, such as in the contact areas 23 , 24 and the connecting surfaces 26 and 27 may be present.

[0101] Fig. Figure 11 shows a schematic top view of the heat conducting element. 19 of the module 18 The heat-conducting element 19 has a connecting surface 28 on this surface the heat-conducting element. 19in the module 18 preferably thermally conductive with the component 5 Connected, for example, glued. Outside the connection area with the component, especially projecting radially from the connection surface. 28 , can be one or more thermal connection surfaces 29 of the heat conducting element 19 be provided. The respective thermal connection surface 29 is in the module 18 preferably in the area of ​​the bulge 13 of the housing part 3 arranged and with the associated thermal contact element 16 of the cover part 4 thermally conductive connection, for example via thermal paste.

[0102] Furthermore, the heat-conducting element 19 one or more edge-side recesses 30 open. Through this recess 30 can be found in the module 18 the area of ​​the conductor part 20with the connection surfaces 26 , 27 extend.

[0103] The heat-conducting element 19 It can be designed as a heat distribution film, for example as a metal or graphite film. The film is preferably thin. The film can have a thickness of 500 μm or less.

[0104] The heat-conducting element 19 is preferably bonded to the back of the component over a substantially full surface. Furthermore, the heat-conducting element 19 via the thermal contact elements 16 with the cover part 4 and thus with the front of the light source 1 Thermally conductive connection. Via the cover section. 4The heat can be dissipated into the environment. This can reduce the operating temperature of the component, thereby increasing its lifespan. Particularly with organic components, even a 3°C reduction in operating temperature can result in a 10% increase in lifespan.

[0105] The heat-conducting element 19 can cover part of the outer surface of the light source 1 form, in particular a part of the rear outer surface. Since the heat-conducting element 19 in this case, for example through the recess on the back of the housing part 3 , which is visible from the outside, the heat conducting element 19 It may also be provided with another element, such as a foil or a varnish, so that a higher-quality aesthetic impression is created from the outside.

[0106] Fig. Figure 12 shows a part of the light source. 1the course of the thermal contact element, which extends next to the component from the cover part 4 up to the thermal connection surface 29 of the heat conducting element 19 extends and is thermally connected to the heat-conducting element there. Furthermore, the edge tapers. 11 of the housing part 3 in the outer edge area of ​​the light source 1 to identify which one creates a flatter overall impression.

[0107] Fig. Figure 13 shows a schematic cross-sectional view of part of the light source. 1 more precisely, the functionality of the fixing element 17 based on the interaction with the electrical connection part 7 The version for the connection part 8 It can be analog. The external connection part 7 is through the implementation 12 , which are preferably located laterally in the housing part 3 is intended to be from the recording 9Led to the outside. Part of the connection section. 7 It is more appropriate to leave it in the housing part 3 This part may include a projection that is expediently larger than the dimensions of the bushing. The connecting part 7 It cannot be completely pulled out of the housing.

[0108] In the housing part 3 can be done by means of the protruding part of the connecting part 7 and part of the housing 3 A limit stop must be provided. Such a limit stop is in Fig. 13 at reference mark 31 realized.

[0109] Against movement into the housing part 3 Inside is the electrical connection part 7 through the fixing element 17 ensured, which provides a stop limit for movement of the electrical connection part. 7 relative to the housing part 3can form. By means of the housing part 3 formed stop limit 31 and the fixing element 17 can the electrical connection part 7 Positionally stable within the light source 1 It may be held in place, for example by clamping. In particular, axial displacement of the connecting part is possible. 7 This can be prevented. If the electrical connection part 7 If the connector is plugged into an external socket for contact, the connector cannot be inserted into the housing part. 3 Slipping back. Preferably, the electrical connection part is held in the clamping seat, thus preventing rotation of the electrical connection part relative to the housing. Damage to a solder joint 32 between the conductor part 20 and the external connection part 7 This can be reduced.

[0110] The electrically conductive external electrical connection part 7is preferably electrically separated from the cover part 4 insulated. The insulation can be achieved using an insulating material. 33 , for example, insulating tape 33 , which is located between the cover part 4 and the external electrical connection part 7 The planned implementation can be realized. The risk of a short circuit between the external connection parts. 7 and 8 over the cover part 4 The height is not increased despite the low building height.

[0111] Fig. Figure 14 shows a top view of the light source 1 with the cover removed 4 The module 18 is in the recording 9 inserted. Despite the precise fit of the recording 9 can, via the bulges 13 , in which the optoelectronic component 5 not ordered, manually included in the recording 9 Intervention will occur and the entire module 18 from the recording9 be removed. Due to the flexibility of the conductor section. 20 Can the external ports also be used? 7 and 8 with deformation of the conductor section from the corresponding feedthroughs 12 be removed.

[0112] Is the optoelectronic component 5 If the bulb is defective, it can be easily removed from the light fixture thanks to the simple plug connection. This is due to the detachable connection between the cover plate and the light fixture. 4 and the housing part 3 can the cover part 4 slightly from the housing part 3 to be removed. To remove the cover part 4 To facilitate removal, a slightly protruding or slightly recessed removal aid can be incorporated into the cover section. 34 be provided for (see Fig. 15).

[0113] A defective module 18It can therefore even be easily replaced by the end user with a new module, which can be installed without in-depth technical knowledge. 9 It can be inserted, with the connecting parts leading outwards. The cover part is then... 4 The external connection parts are subsequently reattached. 7 and 8 fixed and the light source 1 can be reinstalled in the lighting system.

[0114] The inner edge of the recess in the cover part as well. 4 can provide a starting point for something like a fingernail or a screwdriver to remove the cover part 4 from the housing part 3 to solve. Regarding the weight loss aid 34 It can therefore be dispensed with if necessary.

[0115] The Fig. 16 to Fig. Figure 19 shows variations for elements of the embodiment described above.

[0116] In the variation according to Fig. 16. No fasteners for a detachable connection are provided. Rather, fasteners are 15a and 15b provided which form a non-removable connection. In the exemplary embodiment, the connecting means are 15a and 15b designed for a snap connection, for example as a snap hook. The connecting elements 15a and 15b can be adjusted at various points around the circumference of the housing part. 3 and the cover part 4 , preferably distributed in the respective edge area. The respective connecting agent 15a , 15b can from the cover part 4 or the housing part 3 protrude from the housing and be connected to the other connecting element. The respective connecting element can be integrally formed with the housing part. 3 or the cover part 4It may be designed as part of the light source or attached as a separate element. Such a non-removable connection may be provided in the light sources described above and below.

[0117] In the Fig. 17 to Fig. 19 is a variation of the light source described above. 1 The light source is shown schematically. The light source can essentially correspond to the light source described in connection with the preceding figures, unless deviations are specified.

[0118] Like the light source described above, the housing part 4 two surveys 6 on which lie on a common axis and are in particular aligned. The protrusions can be arranged in positions that are offset from each other by 180°. The light source 1 It has an electrical connection part 7on, which is designed as a connecting part for a two-pole plug connection, for example a two-pole jack plug connection. The connecting part 7 It can, for example, be designed as a socket. The jack plug 38 a light that can engage in the socket is in Fig. 17 shown schematically. The connection part 7 is expedient in the area of ​​a survey 6 arranged.

[0119] Opposite the connection part 7 , particularly in the area of ​​other surveys 6 , is a holding device 36 The recess is designed to extend into the housing part. Preferably, the recess does not extend into the receptacle but is axially limited by an end stop. The holding device 36The mounting device can be designed to accommodate a retaining element, for example, a retaining pin, of the light fixture. The retaining connection formed between the retaining element and the mounting device preferably provides stable protection against relative axial movement. Furthermore, the retaining connection preferably allows for rotational movement. Since the mounting device 36 and the connection part 7 aligned along a common axis that runs through these elements, this is achieved by means of the holding device 36 and the connecting part 7 The light source held in the lamp can be rotated around this axis – analogous to the light source from the preceding figures, with a connecting part. 8 is replaced by the holding device.

[0120] Fig. Figure 18 shows a top view of the light source built into the lamp. 1 , which is inserted into the holding device by means of a 36 inserted retaining element 37, which, for example, is designed as a retaining pin and is attached to the light fixture. The retaining element 37 is expediently against axial movement relative to the holding device 36 secured. The receiving-side limit of the holding device 36 forms an end stop for the holding element 37 .

[0121] Fig. Figure 19 shows an exploded view of the light source. 1 , where the cover part 4 , the module 18 and the housing part 3 are shown. In contrast to the light source according to the Fig. 1 to Fig. 16. The light source, according to the variation described here, has the holding device. 36 and a passage arranged opposite this and, in particular, lying on a common axis 12 on. By carrying out 12 can the connection part 7 of the module 18 during the recording 9The inserted module must be accessible from the outside. In contrast to the previously described embodiment, the housing part 3 Not omitted according to this variation. A reverse side of the module. 18 It is therefore not visible from the outside. This means that a large-area heat distribution layer, for example as a copper layer or copper surface, such as a copper foil, can already be integrated into the flexible conductor part. 20 be integrated. The conductor section can therefore have a large surface area and an integrated heat-conducting element. The conductor section 20 is usually not aesthetically pleasing, so it is practical to remove the housing part 3 to form the ladder part continuously and without a recess 20 to keep it invisible from the outside.

[0122] Also through the heat distribution via the large-area heat distribution layer in the conductor part 20Can a homogeneous luminance distribution be achieved across the radiation emission surface of the component? 5 thermal contact elements can be achieved. 16 The elements described above can be provided in the same way as in the other embodiment, but are not explicitly shown. The other elements described above can also be provided in this variation of the embodiment, unless explicitly described otherwise. The heat distribution layer of the conductor section 20 It can be thermally and, if necessary, electrically connected to one pole of the terminal, for example, to the cathode. This allows for some heat dissipation from the component during operation via the terminal. 7 This can occur even if no thermal contact elements are provided.

[0123] The concept presented here can also be applied to other geometries of the component. 5with a different contact layout. If necessary, the jack plug can even take on a mechanical holding function in the light fixture, thus eliminating the need for additional retaining devices for the light source. 1 This can be dispensed with. The total weight of the light source can be 100 g or less, for example 80 g or less, such as 70 g. Such a weight can still be supported by a jack plug.

[0124] In operation, no safety distances, such as air and creepage distances, need to be observed in the area of ​​extra-low voltage. This also applies to a series connection of multiple light sources. 1 , for example via the electrical connection parts 7 and 8 Care should be taken to ensure that the safety extra-low voltage is not exceeded.

[0125] By appropriate design of housing part 3 and cover part 4Can the housing adapt to the cold state of the light source? 1 , i.e., those in which no radiation is emitted. For example, the component can be designed to be mirrored or diffusely reflective in its cold state. In this case, the cover and preferably the housing are also designed to be mirrored or diffusely reflective. The entire light source can thus function as a unified design element. Of course, different colors for the individual elements of the light source are also possible. 1 , which are visible from the outside, is possible.

[0126] On a flexible ladder section 20This component can potentially be omitted. It could be replaced by, for example, ultrasonically bonded wires, ribbon cables, and / or connectors. This would avoid the need for components adapted to the specific design of the device. However, this would complicate manufacturing, particularly assembly. The flexible conductor section facilitates the production of a compact module. 18 , which can also be replaced by the end user. The heat-conducting element can optionally be omitted.

[0127] The invention is not limited by the description based on the exemplary embodiments. Rather, the invention encompasses every new feature as well as every combination of features, which in particular includes every combination of features in the patent claims, even if this feature or combination itself is not explicitly specified in the patent claims or exemplary embodiments.

Claims

[1] Light source ( 1 ) with a radiation emission surface ( 2 ), where the light source includes: – a housing part ( 3 ) with a recording ( 9 ), – at least one organic optoelectronic component ( 5 ), which is arranged in the recording, and – at least one cover part ( 4 ), which is connected to the housing part, wherein the component is held between the cover part and the housing part. [2] Light source according to claim 1, having a maximum thickness of 8 mm or less. [3] Light source according to at least one of the preceding claims, wherein the cover part ( 4 ) is recessed in a radiation transmission area and in which the housing part ( 3 ) is recessed in an area that overlaps with the radiation transmission area. [4] Light source according to at least one of the preceding claims, wherein the cover part (4 ) is magnetically formed and can be detached from the housing part by magnetic forces ( 3 ) is attached. [5] Light source according to at least one of the preceding claims, comprising one or a plurality of external electrical connection parts ( 7 , 8 ) exhibits. [6] Light source according to claim 5, wherein the respective external electrical connection part ( 7 , 8 ) are designed as a connecting part for a jack plug connection. [7] Light source according to claim 5 or 6, wherein a connection part of the connection parts ( 7 , 8 ) as the male connector of an electrical plug connection and another connector part of the connectors ( 7 , 8 ) is designed as a female connecting part of an electrical plug connection. [8] Light source according to any one of claims 5 to 7, – where two connection parts ( 7 ,8 ) are aligned along an axis extending through both connecting parts or – where the light source ( 1 ) a holding device ( 36 ) has, and the holding device and an electrical connection part ( 7 ) of the light source are aligned along a common axis that extends through the holding device and the connection part. [9] Light source according to any one of claims 5 to 8, wherein the component ( 5 ) a plurality of electrical contacts ( 21 , 22 ) of the same polarity, wherein the contacts of the same polarity are connected via a connecting conductor of a conductor part ( 20 ) with a common external electrical connection part ( 7 , 8 are connected. [10] Light source according to claim 9, wherein the conductor part ( 20 ) with the component ( 5) is electrically connected via an anisotropically electrically conductive layer. [11] Light source according to claim 9 or 10, wherein the conductor part ( 20 ) is a flexible printed circuit board. [12] Light source according to any one of claims 9 to 11, wherein the respective external electrical connection part ( 7 , 8 ) with the conductor part ( 20 ) over a plumb line ( 32 ) is electrically connected. [13] Light source according to any one of claims 5 to 12, wherein the cover part ( 4 ) a fixing element ( 17 ) includes which is designed and arranged to connect one of the external electrical connection parts ( 7 , 8 ) against movement relative to the housing part ( 3 ) to secure. [14] Light source according to one of the preceding claims, wherein the cover part ( 4 ) one or more thermal contact elements ( 16) has a thermally conductive connection between the cover part and the building element ( 5 ) is connected, with a heat-conducting element ( ) on the component 19 ) is arranged and thermally connected to the component, wherein this thermal conducting element has a thermal connection surface ( 29 ) exhibits, which in view of the radiation emission surface ( 2 ) seen next to the radiation emission surface, and wherein the thermal connection surface is thermally conductively connected to a thermal contact element of the cover part. [15] Use of at least one connector for a jack plug connection as an external electrical connector ( 7 , 8 ) of a light source ( 1 ) with an organic optoelectronic device ( 5 ).