EP3141802A1 - Supporting device for flat lights - Google Patents

Abstract

The invention relates to a bearing device (101, 201) for a flat luminaire (102), comprising a holder (104, 204) for fastening at least one flat luminaire (102), wherein the holder (104, 204) has a bearing surface (105, 205 ) for the at least one planar lamp (102), wherein the holder (104, 204) at least two spaced apart and laterally formed on the support surface or arranged as an attachment retaining elements (106) which form a receptacle (107), wherein in each bearing (107) is accommodated in each case a polymer bearing (108) made of a resilient polymer material, each polymer bearing (108) having a passage opening (108a) arranged normal to the plane of the bearing surface (105, 205), wherein the bearing device (101, 201) Fastening elements (109), which are guided for fastening the bearing device (101, 201) on a substrate (110) in each case through the through openings (108a) of the polymer bearings (108) ,

Description

The invention relates to a storage device for a flat light, in particular for an organic light-emitting diode, comprising a holder for attaching at least one planar light, wherein the holder has a support surface for the at least one planar light. In particular, the present invention relates to planar lights used in motor vehicle headlights, e.g. in headlights or auxiliary headlights.

Organic light-emitting diodes (OLEDs) are suitable for use in headlamps for motor vehicles and especially for use as a signal light function due to their homogeneous radiation characteristics, the small space depth, the almost arbitrary shape and the possibility of segmentation for use in headlights for motor vehicles. In addition, these lamps enable the implementation of customer-specific design wishes with regard to special lighting impressions and the representation of depth effects.

Conventional OLEDs are made up of several layers. Typically, an OLED comprises an anode, a conductive polymer layer, a light-emitting polymer layer, and a cathode. These are arranged between two substrate plates, which are often glass plates, which are glued together. The gluing of the glass plates prevents environmental influences which would render the OLED inoperative. In such OLEDs and also in other frangible flat illuminants, e.g. used in motor vehicles, however, there is a risk of glass breakage during vibration or during assembly or installation.

Holding and damping devices for various luminous bodies and other fragile bodies are known in principle from the prior art.

The DE 10 2011084 814 A1 discloses a support member for holding at least one flat surface light lamp.

The EP 2 471 688 A1 describes an outboard mounting component for a vehicle, with a light module, which has at least one outwardly, visible light emitting bulb.

The DE 10 2011 100 279 A1 discloses methods and systems for dynamic lighting systems that include at least one light source, which is preferably an OLED or at least one LED.

The DE 10 2008 034 529 A1 describes a vehicle interior part with a support surface, at least one abutment and at least one spring element made of film material, which rests against the abutment.

The US 2010/0039355 A1 describes a loudspeaker device with a visual screen, wherein the membrane of a conventional loudspeaker is replaced with a flexible OLED. The loudspeaker device has a coil, a magnet and a damping element as well as an electric circuit for controlling the loudspeaker modified with the OLED.

The DE 10 2004 032 223 A1 discloses an audiovisual arrangement with a flat, designed to display image information element, which is controllable for light emission.

The FR 2 287 356 A1 describes an apparatus for protecting a windshield having an elastic damper between the windshield and a fixed mounting surface in the vehicle.

It is an object of the invention to provide a vibration and vibration damping bearing device for flat lights, in particular for organic light-emitting diodes, which reduces the risk of breakage due to vibration loads or during assembly or installation of the light. It is a particular object of the invention to provide a vibration and vibration damping bearing device for flat lights, which are used in motor vehicle headlights, for example in headlights or auxiliary headlights.

These objects are achieved by means of a bearing device as mentioned above, which is inventively characterized in that the holder has at least two spaced apart and laterally formed on the support surface or arranged as an attachment holding elements which form a receptacle, wherein in each receptacle each made of a polymer bearing an elastic polymer material is accommodated, wherein each polymer bearing has a normal to the plane of the support surface arranged through hole, wherein the bearing means comprises fastening elements which are guided for fastening the bearing means on a substrate respectively through the through holes of the polymer bearings.

Thanks to the invention, a vibration inhibition and vibration damping in the X, Y and Z direction is possible. When mounting the bearing device in the ground, there is no force input and also the surface mounted on the support surface flat lamp is stored stress-free, since the polymer bearings compensate for any distortion. Furthermore, a series use, which also allows defined screw positions and torques, possible.

The term "sheet light" as used herein refers to lights with planar light components, in particular an organic light emitting diode (OLED). Particularly advantageous is the invention for attaching fragile or voltage-sensitive planar lights such as the aforementioned OLEDs, which lie between two glued glass plates. As further examples of planar lights, a light-emitting diode (LED) array or a planar light guide may be mentioned. The luminous surface of the planar luminaire, as it is fastened with the bearing device according to the invention, is substantially planar. Such luminaires with flat light components and their structure are notoriously known to a person skilled in the art.

The holding elements can either be formed directly on the bearing surface according to known manner, for example by means of welding or, preferably in one piece, by Mitformen in the production of the holder. As a result, a simple, cost-effective and positionally accurate production is possible. The holder may be made of metal or contain a metal, for example, the holder may be made of aluminum, for example by means of aluminum casting, or a surface made of zinc, for example produced by means of zinc die-casting, exhibit. It is also possible to produce the holder made of plastic, for example by injection molding. The choice of material from which the holder is made depends on the type of surface light and the ambient temperature. For example, OLEDs heat themselves only slightly, which is why the choice of material depends mainly on the ambient temperature. A bracket for an OLED, which is mounted in the edge region of a headlamp at the housing opening, would be made advantageously of metal. In the headlight itself, a holder made of plastic would be possible, but for design reasons, however, metal is preferred.

Alternatively, the holding elements may be arranged as attachments on the support surface. Under "attachment" is to be understood that the holding element is applied as an additional part of the side of the support surface. This is particularly advantageous if the support surface consists of a different material as the holding element.

For certain planar lamp geometries, two spaced apart support members, i. two bearing points, sufficient, but there may be the risk of undesirable torque effect. Preferably, therefore, at least three spaced-apart holding elements, i. three or more bearing points, provided. A person skilled in the art is readily able to choose according to the geometry of the support surface, which in turn is influenced by the geometry and the design of the sheet light, the number and positions of the holding elements and their distance from each other so that a possible distortion of the holder is reduced or avoided.

In a specific variant, the support surface is formed substantially quadrangular, wherein the holder has exactly three holding elements, which are arranged on or adjacent to three corners of the quadrangular bearing surface. This variant is characterized by the fact that tension on the support is reduced, an ideal support for the flat luminaire is guaranteed and at the same time a freestanding luminous surface is demonstrated.

As mentioned, the polymer bearings are made of a resilient polymeric material, ethylene-propylene-diene rubber (EPDM) and silicone being considered suitable polymers are. Polymer bearings, which are referred to in the trade and among professionals as rubber bearings, are well known.

As fasteners screws are conveniently used. In order to avoid rotation on the polymer bearing (rubber bearing), it is advantageous if the bearing device also has sleeves as a screw support, wherein the sleeves are respectively inserted into the through holes of the polymer bearings, wherein the screws are each guided by the sleeves. To limit the crushing of the polymer bearing, it is advantageous if the length of the sleeves, when the bearing assembly is bolted to the ground, is shorter than the length of the through holes of the polymer bearings; In this way arises between the ground and that end of the sleeve, which faces the ground, is a defined gap.

For a better cooling effect, at least in some areas cooling fins may be formed in an advantageous development on a lower surface of the holder facing the substrate.

Taking into account the design and the dimensioning of the holder or the flat luminaire, the support surface of the holder is designed such that it covers at least a portion of a lower surface of the at least one flat luminaire. One skilled in the art will be able to make an appropriate choice. For example, the support surface of the holder may be formed in a variant such that it completely covers the lower surface of the at least one planar luminaire. In this variant, the view of the back of the sheet light, e.g. an OLED, completely covered by the holder. For design technical reasons, however, an exemption may be provided on the holder in other variants, wherein in this variant, the support surface of the holder is preferably designed such that it covers at least partially the edge surfaces of the lower surface of the at least one flat lamp.

In a development, each retaining element comprises two legs running parallel to the support surface, wherein the legs form a receptacle into which the polymer bearing can be pressed. The assembly and assembly of the storage device make this particularly easy.

Another object of the invention relates to a luminaire assembly comprising a bearing device according to the invention as described herein and a fixed on the support surface of the support of the bearing device planar light. As already defined in detail above, the term "flat luminaire refers to luminaires with planar light components, in particular an organic light-emitting diode (OLED)." The invention is particularly suitable for fixing fragile or voltage-sensitive flat luminaires, such as the OLEDs mentioned at the outset lie between two glued glass plates.

The flat light can be attached to the support surface by gluing. In addition or as an alternative to fastening by gluing, the planar luminaire can also be fastened to the support surface by means of a screen, for example a frame-shaped screen. The panel also allows a framing of the luminous surface (s) of the at least one flat luminaire, if this is desired for design reasons.

The present invention is particularly favorable for flat lights that are used in lighting devices for motor vehicles. Another object of the invention is therefore an illumination device for a motor vehicle, in particular a motor vehicle headlight, comprising at least one bearing device or a light assembly as described herein. The term "lighting device for a motor vehicle" encompasses all types of motor vehicle headlights, in particular headlights and tail lights.

• Fig. 1 eine perspektivische Ansicht einer Leuchtenanordnung gemäß der Erfindung im zusammengebauten Zustand ist,
• Fig. 2 eine Explosionsdarstellung der Leuchtenanordnung aus Fig. 1 ist,
• Fig. 3 eine Draufsicht auf die Leuchtenanordnung aus Fig. 1 ist,
• Fig. 4 ein Schnitt durch die Leuchtenanordnung aus Fig. 3 entlang der Schnittlinie A-A ist,
• Fig. 5 eine Unteransicht der Leuchtenanordnung aus Fig. 1 ist,
• Fig. 6 eine Ansicht auf die Unterseite einer weiteren Ausführungsform einer Leuchtenanordnung gemäß der Erfindung ist, und
• Fig. 7 - Fig. 11 die Verfahrensschritte des Zusammenbaus der Leuchtenanordnung aus Fig. 1 illustrieren.

The invention will be further described by way of non-limitative example with reference to the accompanying drawings, in which:

• Fig. 1 a perspective view of a lamp assembly according to the invention in the assembled state,
• Fig. 2 an exploded view of the lamp assembly Fig. 1 is
• Fig. 3 a plan view of the lamp assembly Fig. 1 is
• Fig. 4 a section through the lamp assembly Fig. 3 along the section line AA,
• Fig. 5 a bottom view of the lamp assembly Fig. 1 is
• Fig. 6 is a view on the underside of another embodiment of a light assembly according to the invention, and
• Fig. 7 - Fig. 11 the process steps of assembling the lamp assembly Fig. 1 illustrate.

Fig.1 shows a perspective view of a lamp assembly 100 according to the invention, An exploded view of the lamp assembly 100 is in Fig. 2 shown. Fig. 3 is a plan view of the lamp assembly 100 from Fig. 1 and Fig. 4 shows a section through the lamp assembly 100 from Fig. 3 along the section line AA.

In the Fig.1- 4 illustrated lamp assembly 100 is composed of a storage device 101 and an organic light 102 (OLED 102). In the example shown, it is a fragile and voltage-sensitive OLED 102, which comprises a non-illustrated sandwich structure according to a conventional manner with an anode, a conductive polymer layer, a light-emitting polymer layer and a cathode. This sandwich structure is arranged between two glass plates which are glued together. The gluing of the glass plates prevents environmental influences which would render the OLED 102 inoperative. The OLED 102 has a total of four discrete light segments 103. One skilled in the art will appreciate, however, that OLEDs with a different design and other voltage-sensitive planar lights can also be mounted on the bearing device 101.

The bearing device 101 comprises a holder 104 with a planar bearing surface 105 for the OLED 102. The holder 104 further comprises a total of three spaced apart laterally integrally formed on the support surface 105 holding elements 106, so that the storage of the OLED 102 takes place at a total of three storage points. The support surface 105 is formed quadrangular and the holding elements 106 are formed directly adjacent to three corners of the quadrangular bearing surface 105. The holding elements 106 each comprise two legs 106a and 106b extending parallel to the support surface 105, wherein the legs 106a, 106b form a circular receptacle 107. In each receptacle 107, a polymer bearing 108 is fitted. The polymer bearings 108 (also known in the art as a rubber bearing 108) are made of a resilient polymer material, eg EPDK or silicone. The polymer bearings 108 have a substantially hollow cylindrical shape with a through hole 108 a. Furthermore, they have a circumferential groove 108b (see Fig. 4 ), so that they are fitted captive in the receptacle 107 during assembly or during installation of the lamp assembly 100 in, for example, a motor vehicle headlight. Furthermore, the bearing device 101 also comprises fastening elements in the form of screws 109 with a thread 109a, which are used to fasten the bearing device 101 (or the entire lamp arrangement 100) on a substrate 110 (represented by the base-like elements 110) respectively through the through-openings 108a of the polymer bearings 108 are performed. In order to prevent rotation on the polymer bearing 108, sleeves 111 are also provided which are respectively inserted into the passage openings 108a of the polymer bearings 108. The sleeves 111 have at one end a circumferential collar 111 a, whereby the positioning in the through holes 108 a of the polymer bearings 108 and the attachment in the substrate 110 are facilitated.

Referring to the Fig. 4 the length of the sleeves 111, when the lamp assembly 100 or the bearing device 101 is screwed to the substrate 110, is shorter than the length of the through openings 108a of the polymer bearings 108, in order to limit the pinching of the polymer bearing; In this way arises between the substrate 110 and that end of the sleeve, which faces the ground, is a defined gap 113th

The OLED 102 is glued with its bottom surface 102a on the support surface 105. In addition or as an alternative to fastening by adhesive bonding, the OLED can also be fastened to the support surface 105 by means of a diaphragm (not shown), for example a frame-shaped diaphragm. The panel also allows framing the luminous surfaces 103 of the OLED 102, if this is desired for design reasons.

Fig. 5 shows a bottom view of the lamp assembly 100 from Fig. 1 , In order to achieve an improved cooling effect, cooling ribs 112 are formed at least in regions on a lower surface 104a of the holder 104 facing the substrate 110. The cooling ribs 112 are expediently arranged corresponding to the bearing surface 105 in order to dissipate the heat emitted by the OLED 102. The substrate 110 is therefore such that the cooling fins 112 are exposed in the installed state of the lamp assembly 100. In the example shown, the substrate 110 comprises cylindrical base on which the lamp assembly 100 is mounted, it will be apparent to one skilled in the art that the substrate 110 may also be designed differently.

Like from the Fig. 1-3 and Fig. 5 is clearly visible, the support surface 105 of the holder 104 is formed or dimensioned such that it completely covers the lower surface of the OLED 102. The view of the underside 102a of the OLED 102 is therefore completely covered by the holder 104 or its support surface 105.

Fig. 6 shows an alternative embodiment of a lamp device 200, in which the OLED 102 is mounted on a bearing device 201, in which an exemption of the support surface 205 of the holder 204 is provided. The holder 204 or its support surface 205 covers two edge surfaces of the lower surface 102a of the OLED 102 and is substantially L-shaped. On the underside 204a of the holder 204 cooling fins 212 are arranged. The cooling ribs 212 are expediently arranged corresponding to the bearing surface 205 in order to dissipate the heat emitted by the OLED 102. The remaining configuration and features of the lighting device 200 correspond to those of the lighting device 100.

1. a) Die OLED 102 wird mit ihrer Unterfläche 102a auf der Auflagefläche 105 der Halterung 104 aufgeklebt (Fig. 7).
2. b) Die Polymerlager 108 werden in die jeweiligen Aufnahmen 107 der insgesamt drei Halteelemente 106 durch seitliches Einpressen eingepasst ( Fig. 8 ).
3. c) Die Hülsen 111 werden in die Durchgangsöffnungen 108a der Polymerlager 108 eingesetzt ( Fig. 9 ).
4. d) Die Schrauben 109 werden durch die Hülsen 111 geschraubt ( Fig. 10 ).
5. e) Die fertig zusammengesetzte Leuchtenanordnung 100 wird mittels der Schrauben 109 auf dem Untergrund 110 montiert ( Fig. 11 ).

Fig. 7 to Fig. 11 illustrate the process steps a) - e) of the assembly of in Fig. 1-5 shown lamp assembly 100 and the mounting of the lamp assembly on a substrate, the steps are as follows:

1. a) The OLED 102 is glued with its lower surface 102a on the support surface 105 of the holder 104 ( Fig. 7 ).
2. b) The polymer bearings 108 are fitted into the respective receptacles 107 of the total of three holding elements 106 by lateral pressing ( Fig. 8 ).
3. c) The sleeves 111 are inserted into the passage openings 108a of the polymer bearings 108 ( FIG. Fig. 9 ).
4. d) The screws 109 are screwed through the sleeves 111 ( Fig. 10 ).
5. e) The assembled luminaire arrangement 100 is mounted on the substrate 110 by means of the screws 109 ( Fig. 11 ).

Since the polymer bearings 108 compensate for warping, there is no introduction of force during assembly of the luminaire arrangement 100 in the substrate, and the OLED 102 mounted on the support surface 105 of the bearing device 101 is therefore stored free of stress.

The invention may be modified in any manner known to those skilled in the art and is not limited to the embodiment shown. Also, individual aspects of the invention can be taken up and largely combined with each other. Essential are the ideas underlying the invention, which in view of this doctrine can be performed by a person skilled in many ways and still remain maintained as such.

Claims (17)

Bearing device (101, 201) for a planar lamp (102), comprising a holder (104, 204) for fastening at least one planar lamp (102), wherein the holder (104, 204) has a bearing surface (105, 205) for the at least a flat light (102),
characterized in that
the holder (104, 204) at least two spaced apart and laterally formed on the support surface or arranged as an attachment retaining elements (106) which form a receptacle (107), wherein in each receptacle (107) each have a polymer bearing (108) of a elastic polymer material, each polymer bearing (108) having a normal to the plane of the support surface (105,205) arranged through hole (108a), wherein the bearing means (101, 201) fastening elements (109), which for fastening the bearing means (101, 201 ) are guided on a substrate (110) in each case through the passage openings (108a) of the polymer bearings (108). Bearing device (101,201) according to claim 1, characterized in that the holder (104, 204) has at least three spaced-apart holding elements (106). Bearing device (101) according to claim 2, characterized in that the support surface (105) is formed substantially quadrangular, wherein the holder (104) has exactly three holding elements (106) which at or adjacent to three corners of the quadrangular bearing surface (105). are arranged. Bearing device according to one of claims 1 to 3, characterized in that the polymer bearings (108) are made of EPDM or silicone. Bearing device according to one of claims 1 to 4, characterized in that the fastening elements (109) are screws. Bearing device according to claim 5, characterized by sleeves (111) which are respectively inserted into the passage openings (108a) of the polymer bearings (108), wherein the screws (109) are respectively guided by the sleeves (111). Bearing device according to claim 6, characterized in that the length of the sleeves (111) when the bearing assembly (101) is bolted to the substrate (110) is shorter than the length of the through holes (108a) of the polymer bearings (108). Bearing device according to one of claims 1 to 7, characterized in that on one, the substrate-facing lower surface (104a, 204a) of the holder (104,204) at least partially cooling fins (112, 212) are formed. Bearing device according to one of claims 1 to 8, characterized in that the support surface (105, 205) of the holder (104, 204) is formed such that it covers at least a portion of a lower surface (102a) of the at least one planar lamp (102). Bearing device according to claim 9, characterized in that the bearing surface (105) of the holder (104) is formed such that it completely covers the lower surface (102a) of the at least one flat lamp (102). Bearing device according to claim 9, characterized in that the support surface (205) of the holder (204) is formed such that it covers at least partially the edge surfaces of the lower surface (102a) of the at least one planar lamp (102). Bearing device according to one of claims 1 to 11, characterized in that each holding element (106) comprises two parallel to the support surface extending legs (106a, 106b), wherein the legs form a receptacle (107) into which the polymer bearing (108) can be pressed , Luminaire arrangement (100, 200) comprising a bearing device (101, 201) according to one of Claims 1 to 12 and a planar lamp (102) fastened on the bearing surface (105, 205) of the mounting (104, 204) of the bearing device. Luminaire arrangement according to claim 13, characterized in that the flat light (102) is an organic light emitting diode (OLED). Luminaire arrangement according to claim 13 or 14, characterized in that the flat light (102) on the support surface (105, 205) is fixed by gluing. Luminaire arrangement according to one of claims 13 to 15, characterized in that the flat light is fixed by means of a diaphragm on the support surface. Lighting device for a motor vehicle, in particular motor vehicle headlight, comprising at least one bearing device (101, 201) according to one of claims 1 to 12 or at least one luminaire arrangement (100, 200) according to one of claims 13 to 16.

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