• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an arrangement for emitting light, comprising - LED light sources, - a board on which the LED light sources are arranged, - a grid element with cell-like grid areas, wherein the arrangement is such that each of the LED light sources one of Optically associated with raster areas, characterized by lens elements and positioning elements, which are designed and arranged such that the lens elements are arranged positioned by the positioning elements relative to the circuit board.
    公开号:AT15185U1
    申请号:TGM431/2013U
    申请日:2013-12-04
    公开日:2017-02-15
    发明作者:Ilic Tanja；Ing Spiegel Michael
    申请人:Zumtobel Lighting Gmbh；
    IPC主号:
    专利说明:

    description
    ARRANGEMENT FOR LIGHT EMISSIONS AND LUMINAIRE WITH SUCH AN ARRANGEMENT
    The invention relates to a light emitting device having a plurality of arranged on a board LED light sources (LED: light emitting diode), and a raster element having a plurality of cell-like grid areas, wherein the arrangement is such that each of LED light sources one of the grid areas is optically assigned. Furthermore, the invention relates to a luminaire with such an arrangement.
    Such an arrangement in the form of a grid lamp is known from the prior art, in which the cell-like grid areas of the grid element are formed by pot-shaped reflectors; The light of the LED light sources is deliberately emitted via these pot-shaped reflectors.
    In such a grid light, it may happen that the light output shows undesirable properties, for example, with respect to a glare. Although a suitable glare of the light emerging from a cell or a top reflector can be achieved by using a lens for influencing the light in addition to the reflector, the problem in this case arises, in particular in the case of a louvered luminaire Such lenses today are usually made of a plastic material and therefore significantly more expand when heated than the relevant board on which the LED light sources are arranged. Therefore, due to temperature fluctuations, it may happen that the orientation or positioning of the lenses relative to the LED light sources undesirably changed and thus the light output is in turn adversely affected.
    E in another problem is that the tolerances in the manufacture of large plastic parts by injection molding are relatively large. Therefore, it is usually not suitable to form corresponding lenses integral with the grid element.
    The invention has for its object to provide a corresponding improved arrangement for light output. In particular, the arrangement should offer particularly good production possibilities with particularly good optical properties. In addition, a corresponding light should be specified.
    This object is achieved according to the invention with the objects mentioned in the independent claims. Particular embodiments of the invention are indicated in the dependent claims.
    According to the invention, an arrangement for emitting light is provided which has LED light sources, a circuit board on which the LED light sources are arranged and a raster element with cell-like grid areas. In this case, the arrangement is designed such that each of the LED light sources is assigned to one of the screen areas optically. Furthermore, the arrangement has lens elements, as well as positioning elements. The positioning elements are designed and arranged such that the lens elements are arranged positioned by the positioning elements relative to the board.
    By this design, the lens elements can be manufactured as independent of the grid element or with the grid element not mechanically connected components, so that in particular the above-outlined problem with respect to large manufacturing tolerances in injection molded parts is resolved. A reliable alignment of the lens elements with respect to the LED light sources can be achieved by the positioning elements.
    Preferably, the positioning elements comprise pin-like areas, the board having for this purpose corresponding recesses and the lens elements are arranged positioned relative to the board by the pin-like areas are arranged engaging in the recesses. With this design, a suitable positioning of the lens elements is made possible in a comparatively simple manner.
    Preferably, in each case at least one of the positioning elements is connected to a plurality of lens elements to form a lens element group. In this way, the number of components of the arrangement can be reduced; this is manufacturing technology advantageous. If each lens element group has exactly one positioning element, a particularly simple assembly of the device is made possible. In this way, if each lens element group has at least two positioning elements, it can be suitably ensured that during assembly the lens element groups are arranged opposite the board in intended orientations.
    In this case, the lens element groups preferably each comprise between two and eight of the lens elements, in particular in each case between three and six, particularly preferably four. In this way, the lens element groups are advantageously made so large that on the one hand a total of low number of components of the arrangement is possible, on the other hand, however, even with temperature fluctuations still sufficiently accurate alignment of all lens elements of a group is made possible with respect to the board.
    Preferably, the lens element groups are designed so that the positioning elements are formed with respect to the respective lens elements of the respective lens element group in a central region, in particular centrally arranged. In this way, a temperature fluctuation-induced relative change in position between the lens elements and the board can be kept particularly small.
    Preferably, the lens element groups are each designed in one piece. This is manufacturing technology advantageous. In particular, this facilitates the assembly of the arrangement.
    Preferably, the lens element groups are made of plastic; in particular, they can advantageously be designed as injection molded parts in terms of production technology.
    Preferably, the arrangement is designed such that the lens elements are arranged engaging in the grid areas. This makes it possible to achieve suitable that the lens element groups can initially be arranged engaging in accordance with the grid element in the assembly and then in a further step, the board is connected by means of the positioning elements with the lens elements, being particularly suitable by the grid element ensure certain orientations to the board.
    If in this case the lens elements are arranged intervening with play in the grid areas, it can be achieved that can move with temperature fluctuations, the lens elements relative to the grid element, so that corresponding thermal expansions can be collected without this make photometrically disadvantageous noticeable would.
    Preferably, the cell-like grid areas are designed to be reflective. As a result, the arrangement is particularly suitable for a grid lamp.
    Preferably, the arrangement is designed such that the grid element - viewed against a surface normal of the board - surrounds the board across all sides. As a result, a suitable protection against unwanted contact of the board is formed.
    Preferably, at least a portion of the lens elements on side wing areas, which are designed such that they form a lateral contact protection for the board. This makes it possible to form a further contact protection for the board.
    Preferably, the arrangement further comprises a carrier element, which is arranged opposite to the LED light sources with respect to the circuit board. In this case, furthermore, the raster element preferably has latching elements which are arranged to cooperate with corresponding counter-latching elements of the carrier element, in particular for fastening the raster element relative to the carrier element. By this design, an all-encompassing protection of the board and the lens elements is particularly suitable; In principle, a housing of a luminaire can thereby be formed in such a way that a luminaire is formed by the arrangement itself.
    According to a further aspect of the invention, a luminaire is provided which has an arrangement according to the invention for emitting light.
    The invention will be explained in more detail below with reference to an embodiment and with reference to the drawings. 1 shows a sketch in the manner of an exploded view of an exemplary embodiment of an arrangement according to the invention, [0024] FIG. 2 shows a perspective sketch of a region of the lens elements and the raster element, [0025] FIG. 3 is a somewhat more detailed sketch corresponding to FIG. 3, FIG. 5 is a perspective, translucent sketch of the assembled assembly, and [0028] FIG. 6 is a perspective sketch a backup of the connection between the
    Raster element and the support element of the arrangement.
    In Fig. 1 is a sketch of an arrangement according to the invention for the delivery of light in the manner of an exploded view, Fig. 5 shows the arrangement assembled as intended, wherein the parts are outlined diagrammatically.
    The arrangement comprises LED light sources 21,22. It can be provided that the LED light sources 21, 22 each have one LED or a plurality of LEDs as light-emitting elements; For example, this can be provided an LED cluster, such as a red, a green and a blue LED.
    Furthermore, the arrangement comprises a circuit board 1, on which the LED light sources 21, 22 are arranged. Through the circuit board 1 and the LED light sources 21, 22, an LED module may be formed. Preferably, the circuit board 1 is substantially planar, so that it extends in a plane. In the present description, it is assumed that the board 1 is oriented substantially horizontally; In particular, the LED light sources 21, 22 are arranged on one of the two large upper sides of the circuit board 1, here on the downwardly facing upper side of the circuit board 1 (in FIG. 1 the circuit board 1 is diagrammatically outlined, so that the LED light sources 21, 22 are recognizable despite the perspective). In general, however, can also be provided for the operation of the arrangement, a different orientation of the board 1 relative to the vertical; In this case, the directions used here, etc. are to be reinterpreted accordingly.
    Furthermore, the arrangement has a raster element 3 with cell-like grid areas 31, 32. In this case, the arrangement is designed such that each of the LED light sources 21, 22 is optically assigned to one of the raster regions 31, 32, in particular exactly one of the raster regions 31, 32. In particular, the design may be such that in each case one of each of the LED light sources 21,22 emitted light through the respective associated cell-like grid area 31, 32 passes through into an outer space of the arrangement.
    The cell-like grid areas 31, 32 may be designed to be reflective, for example, designed as a cup-shaped reflectors, each forming a light emitting opening on its underside and on its upper side a light entrance opening. Preferably, the reflectors are shaped so that they have reflective, for example, white side walls, which are formed in particular diverging downwards.
    In the example shown, the raster element 3 comprises, in addition to the cell-like raster areas 31, 32, a support structure which extends between the raster areas 31, 32 and around the raster areas 31, 32 and thereby holds the raster areas 31, 32 together.
    The support structure and the grid areas 31, 32 may be designed in particular opaque or opaque.
    The grid element 3 may be made for example of polycarbonate. Preferably, the grid element 3 is designed white.
    Further preferably, the design of the arrangement is such that the grid element 3 - viewed against a surface normal of the board 1 - the board 1 on all sides encompasses. Accordingly, in the example shown, the raster element 3 in the vertical projection surrounds the circuit board 1 on all sides. This makes it possible to form a suitable protection of the board 1 against accidental contact. A corresponding protection is on the one hand advantageous for a user of the arrangement, since the board 1 during operation of the device usually has parts that can lead to electric shock when touched by a user, on the other hand, the protection is advantageous because a corresponding Touch especially the LED light sources 21,22 or could damage the LED module.
    As in the example shown the case, the raster element 3 forms a cover element of the arrangement. Accordingly, by the raster element 3, an outer surface area of the arrangement may be formed.
    Furthermore, the arrangement lens elements 41, 42, in particular, in each case one of the lens elements 41, 42 exactly one of the LED light sources 21, 22 is optically associated. The lens elements 41, 42 are preferably arranged optically between the LED light sources 21, 22 on the one hand and the cell-like raster areas 31, 32 on the other hand. Accordingly, the light emitted by the LED light sources 21, 22 is first optically influenced by the associated lens elements 31, 32 and subsequently by the associated cell-like raster region 31, 32.
    It may be provided in this sense that the arrangement has a certain number of LED light sources and the number of lens elements 41, 42 and also the number of cell-like raster areas 31, 32 identical to the number of LED light sources 21st , 22 is. In the example shown, the arrangement comprises thirty-two LED light sources 21, 22, thirty-two lens elements 41, 42 and thirty-two cell-type raster elements 31, 32.
    Furthermore, the arrangement positioning elements 5, which are configured and arranged such that the lens elements 41, 42 are arranged positioned by the positioning elements 5 relative to the circuit board 1. This makes it possible to achieve a particularly suitable alignment or positioning of the lens elements 41, 42 with respect to the circuit board 1.
    In this case, the lens elements 41, 42 preferably not connected to the grid element 3 connected or not mechanically connected to the grid element 3 configured. In particular, they may consist of a different material than the raster element 3. Preferably, the lens elements 41, 42 are made of a clear material. For example, they may be made of a plastic, such as polymethyl methacrylate (PMMA). Advantageously, the lens elements 41, 42 can be designed as injection-molded parts. In this way, the lens elements 41, 42 particularly suitable independent of the raster element 3 hersteilen.
    The positioning elements 5 preferably have pin-like areas or consist of such and the board 1 preferably has for this purpose corresponding recesses 11, wherein the lens elements 41, 42 are arranged positioned relative to the board 1 by the pin-like areas in the recesses 11th are arranged engaging.
    Preferably, in each case at least one of the positioning elements 5 is connected to a plurality of the lens elements 41, 42 to form a lens element group. In the example shown, exactly four lens elements 41, 42 are connected to exactly one positioning element 5 to a lens element group, so that in the example shown, the arrangement includes a total of exactly eight lens element groups. The lens element groups are preferably each made of one piece or designed in one piece.
    In Fig. 2 is shown in somewhat more detail such a lens element group outlined. For example, as shown, the lens elements 41, 42 may be mechanically interconnected by webs, wherein the positioning element 5 is formed at the intersection of the webs and thus arranged centrally with respect to the lens element group. The lens element groups preferably each consist of the corresponding lens elements 41, 42, the webs and the positioning element 5.
    By such a group formation can be achieved that the arrangement comprises a total of fewer components and thus facilitated assembly of the arrangement is possible. If one were to make all lens elements 41, 42 mechanically cohesive, one would indeed have to deal with only one component, but there would be the risk that at a fluctuation caused by temperature fluctuation of this component, in particular the edge-side lens elements their intended positions relative to their respective associated LED - Leave light sources. If the lens element groups, as shown by way of example, each comprise exactly four lens elements 41, 42, the size of the lens element groups can be particularly suitably chosen such that the number of components is correspondingly reduced, but on the other hand there is virtually no danger that remove the lens elements from their intended positions relative to the LED light sources.
    In this sense, it is preferably provided that the lens element groups each comprise between two and eight of the lens elements 41, 42, in particular between three and six and, as already mentioned, particularly preferably exactly four lens elements 41, 42nd
    As shown, the lens element groups may be configured such that the positioning elements 5 are formed with respect to the respective lens elements 41, 42 of the respective lens element group in a central region, in particular centrally arranged. In this case, a centering element may advantageously be formed by the positioning element 5 in this case. In this way, a potential temperature fluctuation-induced change in position of a lens element 41, 42 relative to the positioning element 5 can be kept relatively small.
    It may also be provided (not shown in the figures) that each lens element group comprises at least two positioning elements. In this way, an intended orientation of the lens element group with respect to the board can be ensured in a particularly suitable manner.
    In Fig. 3, a portion of a cross section through the grid element 3, the lens elements, 41, 42, the board 1 and the LED light sources 21,22 outlined, Fig. 4 shows a corresponding sketch, in more detail. As shown by way of example, in the example shown, the design is such that the lens elements 41, 42 are arranged to engage in the grid areas 31, 32, in particular to engage in engagement with the grid areas 31, 32. In this case, the design may in particular be such that the lens elements 41, 42 are respectively arranged engaging in the light entry opening of the relevant cell-like raster region 31, 32.
    In this way, with only one positioning element 5 per lens element group, at least with an accuracy sufficient for practical purposes, an orientation of the lens element groups relative to the LED light sources 21, 22 is ensured, wherein, due to the play, a thermal expansion the lens element groups is possible, in particular without it comes to undesirable voltages relative to the grid element 3. By this configuration, so to speak, a stop for the lens element group is formed, which acts in the sense of a rotation.
    As indicated in Fig. 1, the arrangement may further comprise a carrier element 7, which is arranged opposite to the LED light sources 21,22 with respect to the circuit board 1, in the case of the orientation considered here above the board 1. In this case, the design is preferably such that the carrier element 7 viewed in a projection normal to the circuit board 1, the circuit board 1 encompasses all sides. This allows a particularly good contact protection.
    As in the example shown, the design can also be such that the grid element 3 cooperates with the carrier element 7 so that a housing of the arrangement is formed by these two parts, the circuit board 1 and the LED light sources 21, 22 encloses all sides. Preferably, as indicated by way of example in FIG. 5, the carrier element 7 is configured as a cuboid in the first approximation, so that it encompasses the patina 1 and the LED light sources 21, 22 from above and from all sides. In the example shown, it also surrounds the grid areas 31, 32, wherein it extends on all sides down practically to the grid element 3 out. In this way, an unwanted edge-side touch of the board 1 can practically be excluded.
    For example, it can be provided, as shown, that the raster element 3 has latching elements 8 which are arranged to cooperate with corresponding counter-latching elements 9 of the carrier element 7, in particular for fastening the raster element 3 relative to the carrier element 7. In the example shown, the latching elements 8 are formed as latching lugs and corresponding thereto counter-latching elements 9 as holes in the support element 7. In the circuit board 1 corresponding slots or holes 10 may be formed, wherein the latching elements 8, these holes 10th are arranged through. As a result, a suitable securing a positioning of the board 1 relative to the grid element 3 and with respect to the carrier element 7 is made possible. To secure this latching connection can, as indicated in Fig. 6, at least one screw 15 may be provided, which is screwed into the carrier element 7, so that it reliably prevents movement of at least one locking element 8 to open the connection. In particular, this can be practically avoided that the arrangement can be opened without the aid of a tool.
    As further apparent from Fig. 1, the arrangement may further comprise an operating device 12 for operating the LED light sources 21, 22. Preferably, the operating device 12 is arranged protected by an additional cover 13.
    On the support member 7, a tab 14 may be formed, which is pivotally connected to the rest of the carrier element 7, wherein an access for electrical connections of the circuit board 1 is opened by a pivoting of the tab 14. Basically, when pivoting up or bending up the tab 14 there is the danger that electrically conductive areas of the circuit board 1 will be inadvertently touched by a user. Therefore, it is further preferably provided that at least a part of the lens elements 41, 42 has lateral wing portions 45, which are designed such that they form a lateral contact protection for the circuit board 1. In the case of a matrix-like arrangement of the lens elements 31, 32, these wing regions 45 are preferably formed at the edge-side lens elements 41, 42.
    The arrangement makes it possible to form a flat and compact structural unit. In the embodiment shown by way of example, a housing is formed by the grid element 3 and the carrier element 7, as mentioned, so that the arrangement as such already forms a luminaire. However, the arrangement may also be provided as part of a luminaire, for example a ceiling light.
    For assembly of the arrangement can be provided that in a first step, the lens element groups are placed as intended on the grid element 3, so that the lens elements 41, 42 inserted engaging in the corresponding light entry openings of the cell-like grid areas 31, 32 become. In a second, subsequent step, the board 1 is then positioned so that the positioning elements 5 engage in the corresponding recesses 11 of the board 1. The locking elements 8 of the grid element 3 are thereby passed through the holes 11 of the board 1. After this step, the lens elements 41, 42 are aligned as intended relative to the LED light sources 21, 22. In a subsequent third step, the carrier element 7 is attached to it
    Operating device 12 placed from above and mechanically connected by locking the locking elements 8 with the counter-locking elements 9 with the grid element 3. Then, in a further, fourth step with the further cover 13, the operating device 12 are covered; the connection between the carrier element 7 and the grid element 3 can be secured by the at least one screw 15.
    The assembly thus assembled can then be electrically connected after bending the tab 14.
    Thus, a particularly fast assembly is made possible, in which the parts are assembled from a mounting direction. The assembly can be implemented in a few simple steps.
    权利要求:
    Claims (14)
    [1]
    claims
    1. An arrangement for emitting light, comprising - LED light sources (21, 22), - a circuit board (1) on which the LED light sources (21, 22) are arranged, - a raster element (3) with cell-like raster regions ( 31, 32), the arrangement being such that each of the LED light sources (21, 22) is optically associated with one of the screen areas (31, 32), characterized by - lens elements (41, 42) and - positioning elements (5), which are configured and arranged such that the lens elements (41, 42) are positioned by the positioning elements (5) relative to the board (1).
    [2]
    2. Arrangement according to claim 1, wherein the positioning elements (5) comprise pin-like areas and the board (1) corresponding thereto recesses (11), wherein the lens elements (41, 42) relative to the board (1) are positioned by positioning the pin-like areas are arranged engaging in the recesses (11).
    [3]
    3. Arrangement according to claim 1 or 2, wherein in each case at least one of the positioning elements (5) with a plurality of the lens elements (41,42) is connected to a lens element group.
    [4]
    4. Arrangement according to claim 3, wherein the lens element groups each comprise between two and eight of the lens elements (41,42), preferably in each case between three and six, in particular four.
    [5]
    5. Arrangement according to claim 3 or 4, wherein the lens element groups are designed so that the positioning elements (5) with respect to the respective lens elements (41, 42) of the respective lens element group in a central region, in particular centrally arranged are.
    [6]
    6. Arrangement according to one of claims 3 to 5, wherein the lens element groups are each designed in one piece.
    [7]
    7. Arrangement according to one of claims 3 to 6, wherein the lens element groups are made of plastic, in particular designed as injection molded parts.
    [8]
    8. Arrangement according to one of the preceding claims, which is designed such that the lens elements (41, 42) in the grid areas (31, 32) are arranged engaging, in particular with play in the grid areas (31, 32) are arranged engaging.
    [9]
    9. Arrangement according to one of the preceding claims, wherein the cell-like grid areas (31, 32) are designed to be reflective.
    [10]
    10. Arrangement according to one of the preceding claims, which is designed such that the grid element (3) - viewed against a surface normal of the board (1) - surrounds the board (1) on all sides across.
    [11]
    11. Arrangement according to one of the preceding claims, in which at least a part of the lens elements (41, 42) has lateral wing regions (45) which are designed such that they form a lateral Berührunqsschutz for the board (1).
    [12]
    12. Arrangement according to one of the preceding claims, further comprising - a carrier element (7), which with respect to the circuit board (1) the LED light sources (21, 22) is arranged opposite.
    [13]
    13. Arrangement according to claim 12, wherein the grid element (3) has latching elements (8) which are arranged cooperating with corresponding counter-latching elements (9) of the carrier element (7), in particular for fastening the grid element (3 ) relative to the carrier element (7).
    [14]
    14. luminaire, comprising an arrangement for emitting light according to one of the preceding claims.
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP2871407B1|2017-03-15|
    DE202013010052U1|2015-02-10|
    EP2871407A1|2015-05-13|
    引用文献:
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    法律状态:
    2017-08-15| MM01| Lapse because of not paying annual fees|Effective date: 20161231 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE202013010052.4U|DE202013010052U1|2013-11-06|2013-11-06|Arrangement for emitting light and luminaire with such an arrangement|
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