AT517467B1 - Storage facility 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

description

BEARING DEVICE FOR FLAT LUMINAIRES

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 bearing 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 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 and especially for use as a signal light function. 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 constructed 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 different luminous bodies and other fragile bodies are known in principle from the prior art.

DE 10 2011 084 814 A1 discloses a support member for holding at least one flat surface light lamp. EP 2 471 688 A1 describes an external mounting component for a vehicle, having a light module which has at least one outwardly visible light emitting means of light.

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

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 bears against the abutment.

US 2010/0039355 A1 describes a loudspeaker device with a visual screen, wherein the membrane of a conventional loudspeaker is replaced by 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.

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

FR 2 287 356 A1 describes a device for protecting a windshield having an elastic vibration 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 the risk of breaking due to vibration loads or during the

Installation or installation of the lamp reduced. In particular, it is an object of the invention to provide a vibration and vibration damping bearing device for flat lights used in motor vehicle headlights, e.g. in headlamps or auxiliary headlamps.

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 integrally formed on the support surface or arranged as an attachment holding elements which form a receptacle, each in each receptacle a polymer bearing is received from a resilient polymer material, wherein each polymer bearing has a through hole arranged normal to the plane of the support surface, 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 "flat luminaire" as used herein refers to luminaires with planar light components, in particular an organic light-emitting diode (OLED) .The invention is particularly advantageous for fixing fragile or voltage-sensitive planar luminaires, such as the OLEDs mentioned in the introduction As further examples of areal luminaires, a light-emitting diode (LED) array or a flat optical waveguide may be mentioned, The luminous surface of the planar luminaire, as fastened with the bearing device according to the invention, is substantially planar Luminaires with flat light components and their structure are notoriously known to a person skilled in the art.

The holding elements can be formed either directly on the support surface according to a conventional manner, e.g. by 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, e.g. For example, the bracket may be made of aluminum, e.g. cast aluminum, or a surface of zinc, e.g. produced by zinc die-casting. It is also possible to use the plastic holder, e.g. by injection molding, manufacture. 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 to the support surface. The term "attachment part" is to be understood as meaning that the retaining element is applied laterally to the bearing surface as an additional part, which is particularly advantageous if the bearing surface consists of a different material than the retaining element.

In certain planar lamp geometries, two spaced-apart retaining elements, 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 design of the sheet light, the number and positions of the holding elements and their distance zueinan of 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.

The polymer bearings are made as mentioned from an elastic polymer material, wherein ethylene-propylene-diene rubber (EPDM) and silicone are mentioned as suitable polymers. 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 support 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 further development, each retaining element comprises two parallel to the support surface extending legs, 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 mounted on the support surface of the holder of the bearing device planar light. As already defined in detail above, the term "flat luminaire refers to luminaires with flat light components, in particular an organic light-emitting diode (OLED). The invention is particularly suitable for attaching fragile or voltage-sensitive planar lights, such as the aforementioned OLEDs, which 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 advantageous 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.

The invention will now be further described, by way of non-limitative example, with reference to the accompanying drawings, in which: Figure 1 is a perspective view of a luminaire assembly according to the invention

Fig. 2 is an exploded view of the luminaire assembly of Fig. 1, Fig. 3 is a plan view of the luminaire assembly of Fig. 1, Fig. 4 is a section through the luminaire assembly from Fig. 3 along the

Fig. 5 is a bottom view of the luminaire assembly of Fig. 1, Fig. 6 is a bottom view of another embodiment of a luminaire assembly according to the invention, and Figs Figure 11 illustrates the process steps of assembling the lamp assembly of Figure 1.

Fig. 1 shows a perspective view of a lamp assembly 100 according to the invention. An exploded view of the luminaire arrangement 100 is shown in FIG. 2. FIG. 3 is a plan view of the lamp assembly 100 of FIG. 1, and FIG. 4 is a section of the lamp assembly 100 of FIG. 3 taken along the section line A-A.

The light assembly 100 illustrated in FIGS. 1-4 is composed of a bearing 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 to a total of three Storage points takes place. 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 referred to in the art as rubber bearings 108) are made of a resilient polymeric material, e.g. EPDK or silicone, made. The polymer bearings 108 have a substantially hollow cylindrical shape with a through hole 108 a. Further, they have a circumferential groove 108b (see Fig. 4) to be used during assembly of the light assembly 100 in e.g. a motor vehicle headlight captive in the receptacle 107 are fitted. 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 FIG. 4, when the lamp assembly 100 or the bearing assembly 101 is bolted to the substrate 110, the length of the sleeves 111 is shorter than the length of the through holes 108a of the polymer bearings 108 to crush the polymer bearing to limit; 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 lower 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 luminous arrangement 100 from FIG. 1. In order to achieve an improved cooling effect, cooling ribs 112 are formed at least in some areas 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 pedestals on which the luminaire assembly 100 is mounted, it being understood by a person skilled in the art that the substrate 110 may also be designed differently.

As can be clearly seen from FIGS. 1-3 and FIG. 5, the support surface 105 of the holder 104 is designed 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.

Figs. 7 to 11 illustrate the process steps a) - e) of assembling the luminaire assembly 100 shown in Figs. 1-5 and assembling the luminaire assembly on a substrate, the steps being as follows: [0045] a ) The OLED 102 is glued with its lower surface 102a on the support surface 105 of the holding tion 104 (Fig. 7).

B) The polymer bearings 108 are in the respective receptacles 107 of the total of three

Retaining elements 106 fitted by lateral pressing (Fig. 8).

C) The sleeves 111 are inserted into the through holes 108a of the polymer bearings 108 (FIG. 9).

D) The screws 109 are screwed through the sleeves 111 (Fig. 10).

E) The ready assembled lamp assembly 100 is mounted by means of screws 109 on the substrate 110 (Fig. 11).

Since the polymer bearing 108 compensate for warping occurs when mounting the lamp assembly 100 in the ground no force input and attached to the support surface 105 of the bearing device 101 OLED 102 is therefore stored tension.

Claims (17)

claims 1. A bearing device (101, 201) for a planar lamp (102), comprising a holder (104, 204) for attaching at least one planar lamp (102), wherein the holder (104, 204) has a bearing surface (105, 205) for the at least one planar lamp (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 a polymer bearing (108) made of a resilient polymer material is accommodated in each receptacle (107), each polymer bearing (108) having a passage opening (108a) arranged normal to the plane of the support surface (105, 205), the bearing device (101, 201 ) Comprises fastening elements (109), which are guided for fixing the bearing device (101, 201) on a substrate (110) in each case through the passage openings (108a) of the polymer bearings (108). 2. bearing device (101, 201) according to claim 1, characterized in that the holder (104, 204) has at least three spaced-apart holding elements (106). 3. bearing device (101) according to claim 2, characterized in that the support surface (105) is formed substantially square, 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. 4. Storage device according to one of claims 1 to 3, characterized in that the polymer bearings (108) are made of EPDM or silicone. 5. Bearing device according to one of claims 1 to 4, characterized in that the fastening elements (109) are screws. 6. Bearing device according to claim 5, characterized by sleeves (111) which are respectively inserted into the through holes (108a) of the polymer bearings (108), wherein the screws (109) are guided in each case by the sleeves (111). 7. Storage device according to claim 6, characterized in that the length of the sleeves (111), when the bearing assembly (101) is screwed to the substrate (110) is shorter than the length of the through openings (108a) of the polymer bearing (108). 8. 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. 9. Bearing device according to one of claims 1 to 8, characterized in that the bearing surface (105, 205) of the holder (104, 204) is designed such that it at least partially a lower surface (102 a) of the at least one planar lamp (102) covered. 10. A storage 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). 11. A storage 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 flat lamp (102). 12. 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) is einpressbar. 13. Luminaire arrangement (100, 200) comprising a bearing device (101, 201) according to one of claims 1 to 12 and a on the support surface (105, 205) of the holder (104, 204) of the bearing device attached flat lamp (102). 14. Luminaire arrangement according to claim 13, characterized in that the planar light (102) is an organic light-emitting diode (OLED). 15. 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. 16. 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. 17. 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.