EP2994695B1 - Reflector assembly having a plurality of reflectors and semiconductor light sources - Google Patents

Description

The invention relates to a reflector arrangement for a lighting device, which has a plurality of reflectors for at least one semiconductor light source, wherein the reflectors reflector portions of a common, continuous sheet metal part, the reflector portions at least partially bent out of the sheet metal part wing areas and the sheet metal part to at least one bent linear reflector trough. The invention further relates to a lighting device with at least one such reflector arrangement. The invention also relates to a method for producing such a reflector arrangement. The invention is particularly applicable to lights for general lighting, in particular for surface lighting.

Linear arrays of multiple reflectors have heretofore been provided either by fabricating the reflectors one at a time and then mounting them side by side on a common carrier, or by inserting crossbars into a linear reflector trough. A linear reflector trough typically has a rectilinear, band-shaped bottom and laterally obliquely upstanding, reflective side walls. The cross blades may e.g. slotted in slots in the side walls or snapped or glued to the side walls. However, both arrangements are relatively complicated to produce.

DE 20 2004 010 990 U1 discloses a luminaire with a rod-shaped light source as well as with a, in particular substantially parallel to the light source, main reflector and a plurality of spaced, reflective cross blades below the light source, wherein the main reflector and the transverse blades are made of a single piece of reflector material.

It is the object of the present invention to overcome the disadvantages of the prior art, at least in part, and in particular to provide a possibility for simplified provision of a reflector arrangement with a plurality of reflectors, in particular linearly arranged reflectors.

This object is achieved according to the features of the independent claims. Preferred embodiments are in particular the dependent claims.

The object is achieved by a reflector arrangement for a lighting device. The reflector arrangement has a plurality of reflectors for at least one semiconductor light source. The reflectors are reflector portions of a common continuous sheet metal part. The reflector portions have at least partially bent out of the sheet metal part wing areas. In addition, the sheet metal part is bent to at least one linear reflector trough, wherein the reflector trough has a band-shaped bottom and laterally thereof at least one upwardly bent side wall.

This reflector arrangement has the advantage that it is made of a single piece, namely the sheet metal part, so that no connection techniques for connecting several parts such as gluing, soldering, welding, etc., need to be used. Simple methods for partially cutting out the wing areas and for forming the sheet metal part are sufficient. The reflector assembly is also particularly stable ausgestaltbar due to their integral nature. Also advantageously, the shaping of the reflector trough is made possible by simple bends or creases along straight, in particular mutually parallel bending lines. Such a reflector trough is particularly easy to produce, if the sheet metal part itself is already band-shaped.

In particular, the linear reflector trough may have a continuous sidewall on each longitudinal side of the bottom along the bottom.

A reflector may be a reflector for a semiconductor light source or a (common) reflector for a plurality of semiconductor light sources.

Preferably, the at least one semiconductor light source comprises at least one light-emitting diode. If several LEDs are present, they can be lit in the same color or in different colors. A color may be monochrome (e.g., red, green, blue, etc.) or multichrome (e.g., white). The light emitted by the at least one light-emitting diode can also be an infrared light (IR LED) or an ultraviolet light (UV LED). Several light emitting diodes can produce a mixed light; e.g. a white mixed light. The at least one light-emitting diode may contain at least one wavelength-converting phosphor (conversion LED). The phosphor may alternatively or additionally be located remotely from the light emitting diode ("remote phosphor"), e.g. on the reflector portion or on the reflector. The at least one light-emitting diode can be in the form of at least one individually housed light-emitting diode or in the form of at least one LED chip. Several LED chips can be mounted on a common substrate ("submount"). The at least one light emitting diode may be equipped with at least one own and / or common optics for beam guidance, e.g. at least one Fresnel lens, collimator, and so on. Instead of or in addition to inorganic light emitting diodes, e.g. based on InGaN or AlInGaP, organic LEDs (OLEDs, for example polymer OLEDs) can generally also be used. Alternatively, the at least one semiconductor light source may be e.g. have at least one diode laser.

The fact that the wing regions can be bent out of the remaining sheet metal part, in particular, that the Wing portions are partially separated from the rest of the sheet metal part, for example, by one or more cuts. As a result, they can be bent out at their at least one free edge against adjacent areas of the sheet metal part. The bent-out wing region and the adjacent, not bent-out region of the sheet metal part are thereby offset from one another, for example staggered. The wing areas are connected to the rest of the sheet metal part but still by at least one non-intersected transition (also referred to as "material bridge"). The wing areas allow a particularly diverse shape of the reflectors. The cuts may, for example, have been introduced by a laser separation method.

It is generally preferred that the reflectors are shell reflectors with correspondingly reflective inner walls. The reflector portions or the reflectors may be generally reflective or diffuse reflective. At least one semiconductor light source may then illuminate light into the reflector through a neck opening or be arranged on the reflector at the half opening. Light typically exits at a light exit opening of the reflector opposite the neck opening. The light exit opening usually has a larger cross-section than the neck opening.

The sheet metal part may be metallic, e.g. made of aluminum or steel, but also made of thin plastic ("plastic sheet"). However, the sheet metal part is not limited thereto and may be e.g. also a thin metal-laminated plastic or similar. be. The sheet metal part can thus generally be designed or designated as a thin, flat and permanently flexible reflector part.

It is still an embodiment that the side walls have the reflector subregions and bent-out wing regions of the reflector subregions are bent into the reflector trough. This allows the Reflectors are generated by simply bending in the wing areas in the reflector trough.

In particular, a reflector can be formed by at least two bent wing regions of opposite reflector subregions and by sections of the side walls lying between the wing regions. Such a reflector may in particular be a circulating reflector or shell reflector.

It is yet another embodiment that the two reflector portions of a common reflector symmetrical to a median plane which is perpendicular to the ground are formed.

It is a further development that the two reflector subregions are mirror-symmetrical to the center plane. For this purpose, in particular two wing areas are present per reflector on each side wall, so four wing areas per reflector. The wing portions of a reflector portion are separated by an intermediate (middle) reflector portion of the side wall (which remains on the side wall). The wing regions are arranged in front of and behind this central reflector section, in particular with respect to a longitudinal extension of the reflector trough, but otherwise cut free. To form a reflector wall bent into the reflector trough, opposite wing areas can be bent into the reflector trough in a manner similar to gates, so that the reflector has two two-part reflector walls there. The wing areas can be bent into their parallel position in the reflector trough or even so that they are at an angle to each other. In particular, it is preferred that no or no significant gap remains between adjacent wing regions through which light could escape laterally. For this purpose, the wing regions are preferably provided with a width which corresponds at least to half the width of the reflector trough at the corresponding height.

It is still a development that the two reflector subregions are point-symmetrical with respect to a central axis perpendicular to the ground, or are rotationally symmetrical about 180 °. In order to form the reflector walls transversely to the reflector trough, only one wing region is then present per reflector on each side wall. In order to form a reflector wall projecting into the reflector trough, the wing regions can be bent into the reflector trough much like gates, but now in particular in one piece. In particular, it is preferred that between such Wing area and the opposite side wall no or no significant gap remains, through which light could escape laterally. For this purpose, the wing regions are preferably provided with a width which corresponds at least to a width of the reflector trough (at the corresponding height).

It is also an embodiment that placement regions for arranging the semiconductor light sources are located on the ground. In particular, the reflectors can serve as shell reflectors for at least one semiconductor light source.

The semiconductor light sources may be arranged directly or indirectly on a placement region. For example, a packaged semiconductor light source may be connected with its bottom directly to the bottom of the reflector trough, e.g. attached to it. Electrical contacting of a semiconductor light source may, for example, occur via top-side contacts, e.g. can be connected via bonding wires with associated electrical connection lines, in particular conductor tracks. Alternatively, the semiconductor light source may be a packaged semiconductor light source, which rests with at least one lower-side electrical contact directly on an electrical connection line, in particular conductor track, and is connected thereto, e.g. can be soldered. The housed semiconductor light sources may in particular be surface mountable components (SMT components). However, the semiconductor light sources may be e.g. also a semiconductor chip mounted on a substrate on the front side, e.g. LED chip, with the substrate rests on the back of the sheet metal part.

It is fundamentally possible to arrange the at least one semiconductor light source on that side of the base, in particular to fix it, on which the reflector is also formed. This page is also referred to as the front of the following without limitation of generality Bodens called. Alternatively or additionally, it is possible that at least one semiconductor light source is arranged on that side of the floor, in particular is fastened, which faces away from the reflector. This page is hereinafter referred to without limitation of generality as the back of the floor. In a rear-side arrangement, the at least one semiconductor light source can in particular radiate through a recess in the bottom in the direction of the front side. Alternatively or additionally, the at least one semiconductor light source may be introduced into a recess in the bottom or carried out to the front.

It is also an embodiment that electrical connection lines extend to the mounting areas at the bottom. This allows a simple electrical connection of the semiconductor light sources. The semiconductor light sources can be connected to one another in series and / or in parallel by means of the electrical connection lines. The electrical connection lines may be, for example, cables, wires or printed conductors. When using non-isolated connection lines, e.g. Conductor tracks, these can rest in particular on an electrically insulating layer on the ground.

In general, a course of the electrical connection lines is not limited to any area of the sheet metal part. You can e.g. also run on areas of the sheet metal part, which correspond to any bottom of a reflector trough.

It is also an embodiment that wing portions which traverse electrical connection lines traverse the connection lines at a distance. As a result, unwanted electrical contact with exposed connecting lines as well as unwanted mechanical stress on the connecting lines through the wing areas can be prevented.

It is still an embodiment that the reflector arrangement has a plurality of reflector troughs. As a result, a particularly large number of reflectors can be provided by a one-piece reflector arrangement, in particular also over a large area. This is particularly advantageous for area lights.

It is still an embodiment that the plurality of reflector troughs are surrounded by a common frame which holds the reflector troughs. As a result, a plurality of reflector troughs can be provided on the same reflector arrangement in a simple manner, which reflector troughs can be shaped in many different ways and largely independently of one another.

The sheet metal part may generally have at least one recess. The recess can be introduced, for example, by local cutting, punching, etc. in the sheet metal part. The at least one recess may in particular serve to conduct a semiconductor light source and e.g. be introduced in the bottom of a reflector trough.

The object is also achieved by a lighting device having at least one reflector arrangement as described above, wherein at least one semiconductor light source is arranged on the sheet metal part. The lighting device may be designed analogously to the reflector arrangement and have the same advantages.

Thus, it is a development that the lighting device has at least one reflector arrangement with at least one reflector trough, wherein the at least one semiconductor light source is arranged on the bottom of the reflector trough. It is also an embodiment that at least one electrical connection line runs at the bottom of the reflector trough.

It is also a development that the semiconductor light sources arranged in a reflector trough and associated connecting lines are arranged on a common substrate. As a result, their arrangement on the sheet metal part can be done in a particularly simple and time-saving manner. Thus, by arranging, in particular attaching, the common substrate to the sheet metal part (for example by gluing a back side of the substrate), all the functional elements located thereon are arranged, in particular fixed, in one working step. Also, an alignment of the functional elements in the arrangement can be omitted.

It is still a development that the common substrate is a band-shaped - flexible or rigid - circuit board, which forms a so-called. Luminous band together with the semiconductor light sources and the connecting lines, in particular an LED strip. Such light bands are e.g. in the form of LED ribbons from Osram, e.g. of the type LINEARLight, commercially available. The use of a luminous band has the further advantage of being e.g. by retaining tabs on the sheet metal part positively and / or non-positively fastened. The retaining tabs are in particular also on the sheet metal part herausbiegbare parts.

The type of lighting device is not limited and may be, for example, a lamp or a lamp. An embodiment is particularly preferred as a luminaire for general lighting, in particular for area lighting. The lamp may in particular be a ceiling light or a wall lamp.

The object is also achieved by a method for producing a reflector arrangement as described above.

The method may include at least the following steps: (i) inserting slots in a sheet metal part to provide for bending out of the sheet metal part Wing portions; and (ii) bending the sheet metal part including bending out the wing portions to form a plurality of reflectors, in particular shell reflectors.

The method may be formed analogously to the reflector arrangement and / or the lighting device and has the same advantages.

In particular, in step (ii), the method may include bending over the sheet metal part, including bending out the wing regions, to form at least one linear reflector trough, in particular with at least two reflectors in each case. Forming the reflectors may include bending out the wing regions into the associated reflector trough.

The bending can in particular include a bending or angling of two portions of the sheet metal part to a common bending line.

It is a further development that the bending of the sheet metal part to form at least one linear reflector trough comprises a bending over to the same side along two parallel bending lines. The area between the two bending lines can serve as a floor, the two areas on the side of the floor can serve as sidewalls. The wing areas can be at least partially bent out of the side walls. In particular, the wing regions can be completely bent out of the side walls, alternatively or additionally bent out of the side walls and out of the bottom.

Fig.1

zeigt in Draufsicht ein Blechteil zum Herstellen einer Reflektoranordnung gemäß einem ersten Ausführungsbeispiel;

Fig.2

zeigt in einer Ansicht von schräg oben die fertige Reflektoranordnung aus Fig.1;

Fig.3-6

zeigt die Reflektoranordnung aus Fig.2 in einer Querschnittsansicht mit unterschiedlich gestalteten Seitenrändern;

Fig.7

zeigt das Blechteil aus Fig.1 mit zusätzlicher elektrischer Verdrahtung und Bestückung mit Halbleiterlichtquellen;

Fig.8

zeigt in Draufsicht ein Blechteil zum Herstellen einer Reflektoranordnung gemäß einem zweiten Ausführungsbeispiel; und

Fig.9

zeigt in Draufsicht ein Blechteil zum Herstellen einer Reflektoranordnung gemäß einem dritten Ausführungsbeispiel.

The above-described characteristics, features and advantages of this invention, as well as the manner in which they are achieved, will become clearer and more clearly understood in connection with the following schematic description of exemplary embodiments which are described in connection with FIGS Drawings are explained in more detail. In this case, the same or equivalent elements may be provided with the same reference numerals for clarity.

Fig.1

shows in plan view a sheet metal part for producing a reflector assembly according to a first embodiment;

Fig.2

shows in a view obliquely from above the finished reflector assembly Fig.1 ;

Fig.3-6

shows the reflector assembly Fig.2 in a cross-sectional view with differently shaped side edges;

Figure 7

shows the sheet metal part Fig.1 with additional electrical wiring and assembly with semiconductor light sources;

Figure 8

shows in plan view a sheet metal part for producing a reflector assembly according to a second embodiment; and

Figure 9

shows in plan view a sheet metal part for producing a reflector assembly according to a third embodiment.

Fig.1 shows a plan view of a section of a sheet metal part 11 for producing a reflector assembly according to a first embodiment. The sheet metal part 11 is made of metal, for example steel or aluminum, which is designed to be reflective at least on one side. The sheet metal part 11 is formed here linearly band-shaped with a longitudinal axis L. The sheet metal part 11 is used to manufacture the in Fig.2 shown reflector assembly 24 partially provided with slots 23 and partially bent. Thus, four longitudinally extending bending lines B1, B2, B3 and B4 are parallel and symmetrical to the longitudinal axis L present, where the sheet metal part 11 is bent. In particular, the sheet metal part 11 is bent up at the inner bending lines B2 and B3 from the image plane in the direction of the viewer. This results in a trench or linear reflector trough 13 to 15 having a central bottom 13 extending in the longitudinal direction L and two thereof laterally outgoing side walls 14 and 15. The bottom 13 is delimited from the side walls 14 and 15 by the inner bending lines B2 and B3. The side walls 14 and 15 may be bent at the outer bending lines B1 and B4 and there form side edges 16 and 17.

The side walls 14 and 15 each have a plurality of reflector portions 18a, 18b, 19a, 19b, wherein each two sub-areas 18a, 18b and 19a, 19b with respect to the longitudinal axis L are opposite and symmetrical. Adjacent reflector portions 18a, 19a and 18b, 19b of the same side wall 14 and 15 are arranged equidistant from each other.

Each of the reflector subregions 18a, 18b, 19a, 19b has a central region 20 which extends continuously between the two associated bending lines B1, B2 or B3, B4. On both sides of the central regions 20, viewed in a longitudinal extension along the longitudinal axis L, there are regions, which are referred to below as "wing regions" 21, 22 and which are delimited from the central region 20 by bending lines B5, B6. The bending lines B5, B6 extend in a straight line over the entire height of the central region 20 between the bending lines B1, B2 or B3, B4. In this case, the bending lines B5, B6 run obliquely, in such a way that the central region 20 expands from the inner bending line B2 or B3 to the outer bending line B1 or B4 or increases in width. The central region 20 thus has the shape of an isosceles trapezium.

The wing portions 21, 22 are separated by respective through slots 23 from the remaining sheet metal part 11. The wing portions 21 and 22 thus depend only on the bending lines B5 and B6 with the rest of the sheet metal part 11 and can therefore be bent out of the sheet metal part 11 at the bending line B5 and B6.

The wing portions 21, 22 may alternatively be cut into the ground 13, as indicated by the dotted lines. This gives the wing portions 21, 22 a larger area, which increases a light output.

Fig.2 shows in a view obliquely from the top of the sheet metal part 11 finished bent reflector assembly 24. The side walls 14 and 15 and the bottom 13 form the linear reflector trough 13 to 15, to which the side edges 16 and 17 connect. The side edges 16 and 17 may constitute part of the reflector trough 13-15.

By the reflector regions 18a and 18b, 19a and 19b respective reflectors 18 and 19 are formed. The reflectors 18 and 19 are each formed as a truncated pyramid shell reflectors. The four reflective side walls are composed of the central regions 20 and opposite wing regions 21 and 22 which are bent into the reflector trough 13 to 15 perpendicularly. Since adjoining wing regions 21 and 22 of opposite reflector subregions 18a, 18b and 19a, 19b, respectively form in the reflector trough 13 to 15 located reflective side walls, their width is half the width of the reflector trough 13 to 15 and the distance of the side walls 14, 15 at the appropriate height. As a result, formation of a gap between adjoining wing regions 21 and 22 is prevented or at least kept so small that no significant loss of light results therefrom.

The section of the bottom 13 bounded by the wing regions 21 and 22 may also be reflective and serves as a mounting region 25 for at least one semiconductor light source in each case.

The wing portions 21 and 22 are also removed from the bottom 13 on its underside, so that they can extend to the bottom 13 in the bent-out state.

The wing portions 21 and 22 have at their the bottom 13 facing underside each one (in Fig.1 not shown) recess 26, wherein the recesses 26 adjoin one another and together form a central passage.

Figure 3 shows the finished reflector assembly 24 Fig.1 in a cross-sectional view with differently shaped side edges 16 and 17. While in the in Fig.2 shown variant of the reflector assembly 24, the side edges 16 and 17 are vertically upright, they are in Figure 3 bent downwards along the outer bending lines B1 and B4. In Figure 4 however, the side edges 16 and 17 are horizontally folded along the outer bending lines B1 and B4. The side edges 16 and 17 are in Figure 5 formed in cross section from the bending line B1 or B4 curved downward, in Figure 6 curved to the side.

Figure 7 shows the sheet metal part 11 with additional electrical wiring and assembly with semiconductor light sources. In addition to the sheet metal part 11 from Fig.1 Now, the band-shaped bottom 13 is occupied at the Bestückungsbereichen 25 each with a semiconductor light source in the form of a light emitting diode 27. The type of LEDs 27 is basically arbitrary, they are designed here as LED chips, which are attached via an electrically insulating substrate 28 to the mounting area 25, for example, are glued. Between the equipping regions 25 and the light-emitting diodes 27, electrical connection lines run in the form of two parallel conductor tracks 29. The conductor tracks 29 are applied to the floor 13 via an electrically insulating layer 30 and supply the light-emitting diodes 27 with electrical energy. The conductor tracks 29 extend in the finished bent state of the sheet metal part 11 through the recess 26 of the wing portions 21 and 22, so that the wing portions 21 and 22 cross the tracks 29 spaced.

The so-equipped, finished bent sheet metal part 11 can serve as a lighting device 31.

Figure 8 shows in plan view a simplified sketch of a sheet metal part 41 for producing a reflector assembly 42 according to a second embodiment.

The sheet metal part 41 differs from the sheet metal part 11 in that it now has three rows R1, R2, R3 of four linearly arranged reflectors 18 or 18a, 18b and not just one row. The sheet metal part 41 can thus be bent to a reflector assembly 42, which has three contiguous linear reflector troughs T1, T2, T3 similar to the reflector troughs 13 to 15. Adjacent reflector troughs T1 to T3 are interconnected by equal side edges 16.

Alternatively, the reflector portions 18a, 18b, etc. may also be completely bent out of the sheet metal part 41 and, in particular, may be additionally fixed in the following, e.g. through a lid.

Figure 9 shows in plan view a simplified sketch of a sheet metal part 51 for producing a reflector assembly 52 according to a third embodiment. The sheet metal part 51 is formed similarly to the sheet metal part 41, but now the common reflector troughs T4, T5 or T6 forming rows of four reflectors 18a, 18b are cut out of the sheet metal part 51 to a transition 53 on the end sides of the bottom 13 rectangular. The associated rectangular sections 54 thus extend between the two transitions 53. This reflector arrangement 52 has the advantage that the reflector troughs T4 to T6 are no longer connected at their side edges, but can be formed independently of one another. Nevertheless, the reflector troughs T1 to T3 are mechanically connected to one another via a common peripheral frame 55, which holds the reflector troughs T4 to T6 at their transitions 53. The reflector troughs T4 to T6 can also be electrically connected to each other, for example, the fact that common tracks traverse the transitions 53 and run on the common frame 55.

Although the invention has been further illustrated and described in detail by the illustrated embodiments, the invention is not so limited and other variations can be derived therefrom by those skilled in the art. Generally, "on", "an", etc. may be taken to mean a singular or a plurality, in particular in the sense of "at least one" or "one or more" etc., unless this is explicitly excluded, e.g. by the expression "exactly one", etc.

Also, a number may include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded.

reference numeral

11

sheet metal part

13

ground

14

Side wall

15

Side wall

16

margin

17

margin

18

reflector

18a, 18b

Reflector portion

19

reflector

19a, 19b

Reflector portion

20

middle area of a reflector section

21, 22

wing areas

23

slot

24

reflector assembly

25

assembly area

26

Recess of a wing area

27

led

28

substratum

29

conductor path

30

electrically insulating layer

31

lighting device

41

sheet metal part

42

reflector assembly

51

sheet metal part

52

reflector assembly

53

crossing

54

cut

55

encircling frame

B1, B4

outer bending lines

B2, B3

inner bending lines

B5, B6

Bend lines of the wing areas

L

longitudinal axis

R1-R3

Rows of reflectors

T1-T6

reflector troughs

Claims (10)

1. Reflector assembly (24; 42; 52) for a lighting device (31), comprising a plurality of reflectors (18, 19) for in each case at least one semiconductor light source (27), wherein

   - the reflectors (18, 19) are reflector sub-regions (18a, 18b, 19a, 19b) of a common, continuous plate part (11; 41; 51),

   - the reflector sub-regions (18a, 18b, 19a, 19b) comprise wing regions (21, 22) bent out at least partly from the plate part (11; 41; 51) and

   - the plate part (11; 41; 51) is bent to form at least one linear reflector trough (13-15; T1-T3; T4-T6),

   characterized in that

   - the reflector trough (13-15; T1-T3; T4-T6) comprises a strip-shaped base (13) and laterally with respect thereto in each case a bent-up side wall (14, 15),

   - the side walls (14, 15) comprise the reflector sub-regions (18a, 18b, 19a, 19b) and

   - bent-out wing regions (20, 21) of the reflector sub-regions (18a, 18b, 19a, 19b) are bent into the reflector trough (13-15; T1-T3; T4-T6).
2. Reflector assembly (24; 42; 52) according to Claim 1, wherein a reflector (18, 19) is formed by at least two bent-over wing regions (20, 21) of opposite reflector sub-regions (18a, 18b, 19a, 19b) and by sections (20) of the side walls (14, 15) that lie between the wing regions (20, 21).
3. Reflector assembly (24; 42; 52) according to either of the preceding claims, wherein the two reflector sub-regions (18a, 18b, 19a, 19b) of a common reflector (18, 19) are embodied symmetrically with respect to a central plane that is perpendicular to the base (13).
4. Reflector assembly (24; 42; 52) according to any of the preceding claims, wherein placement regions (25) for arranging the semiconductor light sources (27) are situated on the base (13).
5. Reflector assembly (24; 42; 52) according to Claim 4, wherein electrical connection lines (29) run to the placement regions (25) on the base (13).
6. Reflector assembly (24; 42; 52) according to Claim 5, wherein wing regions (20, 21) that cross electrical connection lines (29) cross the connection lines (29) in a spaced-apart manner.
7. Reflector assembly (52) according to any of the preceding claims, wherein the reflector assembly (52) comprises a plurality of reflector troughs (T4-T6) surrounded by a common frame (55) that holds the reflector troughs (T4-T 6) .
8. Lighting device (31), comprising at least one reflector assembly (24; 42; 52) having a plate part (11; 41; 51), wherein at least one semiconductor light source (27) is arranged on the plate part (11; 41; 51), characterized in that the at least one reflector assembly (24; 42; 52) comprises at least one reflector assembly (24; 42; 52) according to any of the preceding claims.
9. Lighting device (31) according to Claim 8, wherein the at least one semiconductor light source (27) is arranged on the base (13, 25) of the reflector trough (13-15; T1-T3; T4-T6).
10. Method for producing a reflector assembly (24; 42; 52) according to any of Claims 1 to 7, wherein the method comprises at least the following steps:

    - introducing slots (23) into the plate part (11) for providing the wing regions (21, 22) that can be bent out from the plate part (11);

    - bending over the plate part (11) including bending out the wing regions (21, 22) from the side walls (14, 15) into the reflector trough (13-15; T1-T3; T4-T6) for forming the plurality of reflectors (18, 19).

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