EP2674670A1 - Lamp and method for its production - Google Patents

Abstract

The lamp (1) has a circuit board (2) on which a light source (3) i.e. LED, is arranged. A reflector unit (4) is attached to a reflector body (5) by a reflector holder (7). The circuit board is fastened to a retaining portion (9) of the reflector holder. The reflector holder is made of metallic material or plastic and provided with a soldering portion (8). The retaining portion is placed outside the reflector body. An aperture (6) surrounds a front end portion of the reflector body. The reflector holder is segmented into multiple separate reflector holder parts. An independent claim is also included for a method for manufacturing a lamp.

Description

The present invention relates to luminaires comprising a printed circuit board, on which at least one luminous means, preferably in the form of an LED package, is arranged, and a reflector unit which is assigned to the luminous means provided on said printed circuit board. In this case, the invention particularly relates to the attachment of the reflector body to the printed circuit board carrying the luminous means, and to a method for producing such a luminaire with a reflector unit attached to a printed circuit board.

There are lights are known in which bulbs such as LEDs or other point-like light sources are mounted on a circuit board or board, from which the bulbs are powered. In order to be able to control the light propagation or light distribution in the desired manner, the illuminants are often assigned reflector units which sit above the light sources or embrace them and are accordingly arranged on or in front of said printed circuit board. In order also to capture the light emitted laterally by the light sources, the reflector units advantageously sit directly on the printed circuit board, so that the reflector units also capture light emitted by the light sources parallel to the printed circuit board. To the of In this case, a precise and exact positioning of the reflector units relative to the light sources is important, on the one hand an exact position of the light source in the center or desired location relative to the reflector unit is sought and on the other hand, the reflector unit relative to the circuit board should not be tilted, since the circuit board determines the orientation of the lamp during assembly and thus the orientation of the reflector units.

However, the exact positioning and orientation of the reflector units in such lights with circuit board is not readily achieved in a simple manner, since the reflector holder should not affect the optical function of the reflector unit on the one hand and on the other hand must be matched to the material of the reflector unit. In particular, the reflective surfaces of the reflector unit should not be covered by the reflector holder or be broken by fasteners such as rivet pins or the like. On the other hand, reflector units sometimes consist of coated hard plastics or light metals such as aluminum, which are not readily attachable to the circuit board itself. In this respect, reflector holders have been used so far that grip the reflector units form fit and are mounted separately on light-carrier components, which are fastened together with the printed circuit board to a lamp housing or carrier part. However, there are problems with the exact alignment and positioning. On the other hand, the production times are affected by a corresponding number of assembly steps.

The present invention is therefore based on the object to provide an improved luminaire and an improved manufacturing method respectively of the type mentioned, avoid the disadvantages of the prior art and further develop the latter in an advantageous manner. Preferably, in short production times with a few assembly steps, an exact positioning and alignment of the reflector unit relative to the light source and the circuit board can be achieved. According to the invention this object is achieved by a luminaire according to claim 1 and a method for producing a luminaire according to claim 13. Preferred embodiments of the invention are the subject of the dependent claims.

It is therefore proposed to solder the reflector unit to the printed circuit board. In order to enable such a brazing despite unsuitable material of the reflector unit, a solderable reflector holder is attached to the reflector unit, which is material inhomogeneous with the reflector material and can be soldered to the circuit board. According to the invention, the fastening means for fastening the reflector body to the printed circuit board have a reflector holder made of a solderable material which can be soldered to the printed circuit board. The holding portion of the reflector holder can be formed directly on the reflector body, for example by molding or encapsulation molded to the reflector body, or the reflector body can be molded or molded onto the reflector holder or integrally formed integrally with the reflector holder. In this way, the reflector unit can be positioned very close to or directly on the printed circuit board, so that the illuminant can be almost completely encompassed by the reflector unit and also laterally emitted light can be conducted completely into the reflector unit. At the same time, a high degree of precision is achieved with respect to alignment and positioning of the reflector unit relative to the illuminant and to the circuit board.

In particular, the illuminant and the reflector unit may advantageously be positioned together and aligned with each other in a preparatory step on the circuit board, and then, when the illuminant and the reflector unit are positioned and aligned with the circuit board, soldered in a common joining step to the circuit board. This eliminates additional assembly steps such as re-clamping the circuit board and reflector unit, since it can be worked in a Aufspannschritt, and can be dispensed with different attachment steps or fastening devices such as soldering on the one hand and welding or gluing device.

In an advantageous development of the invention, the reflector holder can be fixed to the reflector unit by an arching or forming step, wherein in particular the attachment of the reflector holder can take place on the reflector body during the initial and / or forming of the reflector unit, in particular during the casting or spraying of the reflector unit in that the reflector holder is connected to one or more holding sections on one or more sides of the material of the reflector body and / or is enclosed on all sides by the reflector material. By pouring or sprueing or molding or sprinkling of the reflector holder not only additional mounting steps for mounting the reflector holder can be avoided on the reflector body after its production, but also minimized or obscured sections of the reflector unit and the optical properties affecting additive materials such as adhesive joints are avoided.

For example, the reflector holder can be placed with its holding portion in a casting or injection mold, for example, such that the holding portion forms part of the wall of the mold or is applied to this, so that when introducing the reflector material of the holding portion of the reflector holder integrally to the reflector body is formed or molded in this. This creates a cohesive or material connection similar connection directly between the holding portion and the material of the reflector body, for example by atomic or molecular bonds between the materials and / or by microforming in the sense of a microscopic or macroscopic entanglement of the inflowing reflector material on or in the Surface structure and there possibly existing pores and roughness, so that binds the reflector material during solidification on the holding portion of the reflector holder. Similar to what is known in two-component injection molding, the holding portion of the reflector holder can be connected directly to the material of the reflector body.

The molding of the reflector holder on the reflector body can be done not only directly during prototyping or reshaping of the reflector body, but optionally also in a subsequent processing step, for example, such that the reflector material is at least partially reflowed, for example by means of laser radiation, so as to firmly weld the then against the molten material of the reflector body holding portion on the reflector body. The re-solidifying reflector material binds the reflector holder itself. This also allows an immediate connection of the reflector holder to the reflector body done, which allows precise positioning.

If the reflector unit is manufactured in a different manner, for example by pressing, the reflector holder can advantageously also be molded or integrated into the same during the shaping or production of the reflector unit.

The named reflector holder made of solderable material can, depending on the material and manufacture of the reflector body, in principle, however, also be attached to the reflector body in a different manner. For example, said reflector holder, possibly in addition to molding, for example, by welding to the reflector body attached, and / or clamped to the reflector body or be locked, for example by a clip-like positive connection, for example, such that the reflector body locking recesses and / or - projections into which an elastically formed reflector holder can snap in elastically, for example with latching tongues. Alternatively or additionally, it would also be possible to adhere said reflector holder to the reflector body and / or, in the case of a suitable shape of the reflector body, to frictionally clamp the reflector holder on the reflector body.

In an advantageous development of the invention, the reflector holder may comprise at least one holding section attached to the reflector body, for example in the form of an anchoring section anchored in the interior of the reflector body and at least one soldering section located outside the reflector body. Said anchor portion may advantageously be poured or injected into the reflector body. Alternatively or additionally, the or another anchor or holding section can also be locked with a portion of the reflector body or connected in any other form-fitting and / or frictionally engaged.

In order to achieve a high strength of the connection between the reflector holder and the reflector body, said holding and / or anchor portion may have at least one undercut in the interior of the reflector body viewed in the pulling direction, preferably in the form of a hook, eye or window-shaped holding portion with a holding recess, which can be filled with material of the reflector body. Alternatively or additionally, the anchor portion may also be understood to have a microstructure which may be, for example, scale-like or comb-shaped. Advantageously, the reflector body can form a material bridge in the region of said undercut which extends through said recess of the holding section. For example, if the holding and / or anchoring section has at least one window-shaped or blind-hole-shaped recess, the material of the reflector body can penetrate into said window-shaped recess during encapsulation, as a result of which the reflector holder is anchored particularly robustly. Bonding problems at the interfaces or even a partial detachment of the interfaces, for example as a result of shrinkage processes when cooling the reflector body material have accordingly no significant influences on the strength or durability of the connection, since said material bridge and / or said undercut the holding and / or anchor portion nevertheless firmly in the reflector body holds. By the aforementioned pulling direction is meant the directions in which said holding and / or anchor portion would be pulled out of the reflector body and / or the reflector holder would be removed approximately perpendicular to the surface of the reflector unit of this. In this pulling direction, said retaining and / or anchor portion advantageously has said undercut, which is advantageously embedded in the interior of the reflector body and / or acts on a form-fitting holding portion of the reflector body.

Alternatively, or in addition to pouring an anchor portion of the reflector holder may be cast or molded with a holding portion but only superficially to the reflector body or integrally formed in some other way, for example, by injecting the reflector body to a surface of the holding portion of the reflector holder. Such superficial molding may be sufficient in particular if the reflector unit is formed from a material which can develop high bonding forces to a metallic reflector holder. In a further development of the invention, the reflector unit may be formed, for example, of silicone or a material based on silicone or a silicone-containing material which may be reflective coated or mirrored on the surface and may also develop good binding forces to the metallic reflector holder.

Depending on the design of the reflector holder or the requirements of the reflector unit, however, this can also be made of other suitable materials, in principle, all materials come into consideration, which have a soldering permitting temperature resistance. In an advantageous development of the invention, materials, in particular plastics, but also glass or glass ceramics, can be used which have a soldering operation at a temperature of 200 ° C. or more, preferably 260 ° C. or more for a period of at least 0.5 min, preferably Resist dimensionally stable for 1 min or more. Advantageously, materials, in particular plastics with a softening temperature of more than 150 ° C can be used. For example, the silicone materials mentioned can be used for the reflector body.

If the reflector body has on its side facing the printed circuit board a passage opening through which at least part of the luminous means can be pushed, said reflector holder can be arranged in a further development of the invention on a front side portion of the reflector body surrounding the passage opening, so that the reflector holder coincides with its outside Reflector body located portion substantially between the reflector body and the circuit board extends. According to this embodiment, the reflector holder on the PCB sit and sit the reflector body in turn on the reflector holder. On the one hand, this allows precise positioning of the reflector unit on the printed circuit board. On the other hand, the optical obstruction of the beam paths in the reflector unit is minimized.

Alternatively or additionally, the reflector holder can also be incorporated flush in the reflector body, in particular such that the printed circuit board facing surfaces of the reflector body on the one hand and the reflector holder on the other hand are approximately at the same level or flush with each other. In this embodiment, both the reflector holder and the reflector body itself can be seated on the printed circuit board, wherein the solder connection is made in the region of the exposed surface of the reflector holder. Such a flush incorporation of the reflector holder in the reflector body can basically be done in various ways, for example by direct pouring or casting or sprinkling of the reflector body to the reflector holder in the reflector manufacturing. Optionally, in the reflector body initially a corresponding recess may be incorporated, in which the reflector holder is then sunk so that it is positioned flush with the surface of the reflector body, the reflector holder can be welded or glued, for example, in said recess.

Advantageously, the reflector holder is fastened here with its at least one retaining and / or anchor portion on / in the edge and / or surrounding area of the reflector body around said recess.

In order to increase the strength of the reflector holder and to introduce holding or bearing forces as evenly as possible into the reflector body, in an advantageous development of the invention the reflector holder can extend on opposite sides of the aforementioned recess. In particular, in an advantageous embodiment of the invention, said reflector holder may be annular or, with its portion located outside the reflector body, a ring, optionally also forming a slotted ring extending around said reflector opening on the circuit board side.

The reflector holder may have with its located outside of the reflector body portion has a preferably flat footprint for placing the reflector unit on the circuit board. In order not to adversely affect current conductors located on the circuit board, the invention can be provided in an advantageous development that said contact surface does not form a closed ring, but is formed from a plurality of spaced contact surface sections, advantageously along a ring contour, in particular around the aforementioned recess portion of Reflector unit can be arranged around.

The reflector holder can be soldered in a further development of the invention directly on the side facing the reflector unit side of the circuit board, for example, with the aforementioned ring or contact patch section. Alternatively or additionally, the reflector holder can also be soldered on the back of the printed circuit board surface facing away from the reflector unit. For this purpose, the reflector holder may preferably comprise pin-shaped push-through projections which can be inserted through corresponding bores or recesses in the printed circuit board, so that protruding portions of said push-through projections on the local, rear printed circuit board side can be soldered on the back.

The soldering portion of the reflector holder may consist of metal or a Metalliegierung in an advantageous embodiment of the invention, which forms a solid compound with a metallic solder, for example in the form of a tin compound. For example, the reflector holder made of a copper material or a copper alloy, but other metallic materials are possible. Advantageously, the reflector holder consists of a metal material whose melting temperature is significantly above the melting temperature of the solder. Alternatively, the reflector holder, in particular its soldering portion and a Metal material consist, which itself forms the solder for the solder joint, so that a corresponding soldering portion of the reflector holder is melted during soldering and soldered to the corresponding portion of the circuit board. However, preferred is the aforementioned use of a metal material that does not melt during soldering itself and is soldered to the circuit board with the addition of a suitable solder.

Fig. 1:

eine Explosionsdarstellung einer Leuchte umfassend eine Leiterplatte mit einem darauf angebrachten Leuchtmittel in Form einer LED sowie einer dem Leuchtmittel zugeordneten Reflektoreinheit, die mittels eines ringförmigen Reflektorhalters an der Leiterplatte festgelötet wird, wobei die Komponenten der Leuchte in perspektivischer Darstellung gezeigt sind,

Fig. 2:

eine Seiten- und Schnittdarstellung der Leuchte aus Fig. 1, wobei die Teilansicht (a) die Leuchte in Explosionsdarstellung in Seitenansicht, die Teilansicht (b) einen Schnitt entlang der Linie A-A in der Teilansicht (a) und die Teilansicht (c) einen Schnitt entlang der Linie B-B in der Teilansicht (a) der Fig. 2 zeigt,

Fig. 3:

eine perspektivische Explosionsdarstellung einer Leucht ähnlich Fig. 1 nach einer weiteren vorteilhaften Ausführung der Erfindung, gemäß der der Reflektorhalter zur Befestigung der Reflektoreinheit an der Leiterplatte Durchsteckvorsprünge besitzt, die durch die Leiterplatte hindurchsteckbar und auf der Rückseite verlötbar sind,

Fig. 4:

eine Seiten- und Schnittdarstellung der Leuchte aus Fig. 3 in Explosionsdarstellung, wobei die Teilansicht (a) eine Seitenansicht der Leuchte zeigt, die Teilansicht (b) einen Schnitt entlang der Linie E-E und die Teilansicht (c) einen Schnitt entlang der Linie F-F aus der Teilansicht (a) zeigt,

Fig. 5:

eine perspektivische Explosionsdarstellung einer Leuchte ähnlich Fig. 1 nach einer weiteren vorteilhaften Ausführung der Erfindung, gemäß der der Reflektorhalter mehrteilig ausgebildet ist und keine geschlossene, ringförmige Aufstandsfläche bildet, und

Fig. 6:

eine Seiten- und Schnittdarstellung der Leuchte aus Fig. 5, wobei die Teilansicht (a) eine Seitenansicht der Leuchte in Explosionsdarstellung zeigt, die Teilansicht (b) einen Schnitt entlang der Linie C-C und die Teilansicht (c) einen Schnitt entlang der Linie D-D aus der Teilansicht (a) der Fig. 6 zeigt, und

Fig. 7:

eine perspektivische Explosionsdarstellung einer Leuchte ähnlich Fig. 1 nach einer weiteren vorteilhaften Ausführung der Erfindung, gemäß der ein ringförmiger Reflektorhalter an die Reflektoreinheit oberflächlich angeformt wird, und

Fig. 8:

eine Seiten- und Schnittdarstellung der Leuchte aus Fig. 7, wobei die Teilansicht (a) eine Seitenansicht der Leuchte in Explosionsdarstellung und die Teilansicht (b) einen Schnitt entlang der Linie H-H aus der Teilansicht (a) zeigt.

The invention will be explained in more detail below with reference to preferred embodiments and associated drawings. In the drawings show:

Fig. 1:

an exploded view of a lamp comprising a printed circuit board with a mounted thereon light source in the form of an LED and a lamp associated reflector unit, which is soldered by means of an annular reflector holder to the circuit board, the components of the lamp are shown in a perspective view,

Fig. 2:

a side and sectional view of the lamp Fig. 1 , wherein the partial view (a) the light exploded in side view, the partial view (b) a section along the line AA in the partial view (a) and the partial view (c) is a section along the line BB in the partial view (a) of Fig. 2 shows,

3:

an exploded perspective view of a light similar Fig. 1 according to a further advantageous embodiment of the invention, according to which the reflector holder for attaching the reflector unit to the circuit board has push-through projections, which can be pushed through the circuit board and soldered to the back,

4:

a side and sectional view of the lamp Fig. 3 in an exploded view, wherein the partial view (a) shows a side view of the lamp, the partial view (b) shows a section along the line EE and the partial view (c) shows a section along the line FF from the partial view (a),

Fig. 5:

an exploded perspective view of a lamp similar Fig. 1 According to a further advantageous embodiment of the invention, according to which the reflector holder is designed in several parts and does not form a closed, annular contact surface, and

Fig. 6:

a side and sectional view of the lamp Fig. 5 , wherein the partial view (a) shows an exploded side view of the luminaire, the partial view (b) a section along the line CC and the partial view (c) a section along the line DD from the partial view (a) of Fig. 6 shows, and

Fig. 7:

an exploded perspective view of a lamp similar Fig. 1 according to a further advantageous embodiment of the invention, according to which an annular reflector holder is integrally formed on the reflector unit, and

Fig. 8:

a side and sectional view of the lamp Fig. 7 , wherein the partial view (a) shows an exploded side view of the luminaire and the partial view (b) shows a section along the line HH from the partial view (a).

As the FIGS. 1 and 2 show, the lamp 1 comprises a printed circuit board 2 or board on which a lamp 3 is mounted in the form of an LED, which is supplied via said circuit board 2 with power or is driven. Furthermore, the luminaire 1 comprises a reflector unit 4, the shape of which can vary depending on the desired light distribution and has a reflector body 5 which sits directly in front of the printed circuit board 2 or is set over the luminous means 3. As Fig. 1 shows the reflector unit 2 in this case opposite end faces, on the one hand form a circuit board side and on the other hand, a light exit side, wherein the circuit board side the printed circuit board 2 faces and may have a smaller diameter than the light exit side. In particular, the reflector body 5 can form at least approximately a rotationally symmetrical, preferably parabolic or conical cup, which sits above the lighting means 3 and whose bottom has a passage opening through which the lighting means 3 passes.

In particular, the reflector unit 4 may have on its side facing the printed circuit board 2 a hole-shaped opening 6, cf. Fig. 2 , There, the sectional views (b) and (c), with which the reflector unit 4 can be set via the lighting means 3, so that the lighting means 3 is at least partially received in the reflector interior. As a result, laterally emitted light can be captured and the reflector unit 4 can be positioned directly on the printed circuit board 2.

For fixing the reflector unit 4 to the circuit board 2, a reflector holder 7 is fixed to the reflector unit 4, which is arranged and fixed to the circuit board side end side of the reflector unit 4. In this case, the reflector holder 7 comprises a soldering section 8 extending outside the reflector unit 4 and a holding section, for example in the form of anchor sections 9 located at least partially within the reflector body 5 or incorporated in the reflector body 9. In particular, said reflector holder 7 is seated on a preferably front-side edge portion 10 of the reflector body 5, which surrounds the aforementioned recess 6. The holding and / or anchoring sections 9 extend into / on a surrounding section of the reflector body 5, which surrounds said recess 6.

The holding and / or anchor portions 9 are advantageously evenly distributed around the circumference of the opening 6 around and can - especially at two anchor sections - extend on opposite sides of the opening 6. For example, if there are three anchor portions 9, they may be spaced apart by a uniform pitch of 2/3 π. Advantageously, in this case the anchor portions 9 are formed only over a limited peripheral portion to the optical properties of the reflector unit 4 as little as possible to hinder. As Fig. 1 shows, the holding portions 9 together with their circumferential extent less than 1/2, preferably less than 1/3 of the circumferential extent of the reflector holder 7 and the edge portion 10 occupy, so that the remaining portions of the reflector body 5 remain completely unimpaired in terms of their optical properties. The said holding portions 9 extend in this case only limited in their depth. In a further development of the invention, the depth of the holding or anchor portions 9 is smaller than the diameter of the recess 6, advantageously smaller than half the diameter of said recess 6. If the reflector unit 4 no recess 6 of the type mentioned, the anchor portions 9 are still in its circumferential extent and / or depth limited, advantageously such that the depth is less than 1/2, preferably less than 1/3 of the diameter of the light entrance side forming reflector front side surface.

Said retaining and / or anchor portions 9 are advantageously undercut in the direction of the reflector longitudinal or -symmetrieachse in order to increase the strength of the connection. In particular, said anchor portions 9 may have within the reflector body 5, preferably window-shaped recesses, which are filled with material of the reflector body 5.

Advantageously, said retaining and / or anchor portions 9 are formed in the reflector body 5 when the reflector body 5 is manufactured, in particular cast or injected, when the reflector body 5 (spritz) is poured. Depending on the material, the reflector body 5 can also be pressed into shape, for example, in which case the holding and / or anchor sections 9 can be integrated into the reflector body 5 when pressed.

As Fig. 1 1, the soldering portion 8 of the reflector holder 7 extending outside the reflector body 5 may have an annular contour and / or form an annular contact surface 11, with which the reflector unit 4 can be placed on the printed circuit board 2.

For fixing the reflector unit 4 to the printed circuit board 2, both the light source 3 and the reflector unit 4 are initially positioned on the printed circuit board 2 in the desired alignment with each other, which can be achieved, for example, by corresponding positioning projections on the light source 3 and / or the reflector unit 4 be inserted into corresponding Positionierausnehmungen in the circuit board. If said components are positioned on the printed circuit board 2, they are then soldered, wherein the reflector unit 4 is soldered by means of the reflector holder 7, which is soldered with its aforementioned soldering portion 8. If the soldering of both the luminous means 3 and the reflector unit 4 takes place on the side of the printed circuit board facing the reflector unit, then in principle the luminous means 3 can first be positioned on the printed circuit board 2 and soldered there. In a subsequent assembly step, for which the circuit board 2 can be driven in the same setting, then the reflector unit 4 is positioned on the circuit board 2 and then soldered. Advantageously, however, the reflector unit 4 and the luminous means 3 are soldered at the same time or in the same step, if this takes place on the reflector side of the printed circuit board 2, for example in an SMD soldering process in which the components to be soldered, i. Reflector unit 4 and circuit board 2, together in set position to each other in an oven can retract to melt the pre-provided between the components to be connected solder or soften to solder the components together.

Even if the luminous means 3 and / or the reflector unit 4 are soldered on the back of the circuit board 2, the positioning steps for both components can be carried out together and then, as soon as the two components are positioned, are soldered in a common soldering step, for example by dip soldering.

For a soldering of the reflector unit 4 on the opposite side of the reflector unit 4 of the circuit board 2, the reflector holder can have 7 Durchsteckvorsprünge with which the reflector holder 7 by corresponding recesses in the circuit board can be inserted, as this Figures 3 and 4 demonstrate. According to this embodiment, the reflector holder 7 also comprises an anchor portion 9, which is embedded in the material of the reflector body 5, in particular molded, wherein in the in Fig. 3 embodiment shown, the said anchor portion 9 is annular, but also according to the previous embodiment could be composed of different sections.

Said anchor portion 9 is connected to a plurality of soldering portions 8 which protrude from the reflector unit 4 and form pin-shaped through-projections 12 in the illustrated embodiment, which can be inserted through recesses 13 in the printed circuit board 2, so that the push-through projections 12 on the back of the printed circuit board. 2 emerge and can be soldered there.

As the Figures 5 and 6 show, the reflector holder 7 does not have a closed ring shape, but may also consist of several parts. In the illustrated embodiment, in each case segment-shaped reflector holder parts are provided, each comprising a holding and / or anchor portion 9 embedded embedded in the material of the reflector body 5 in particular cast or injected and may have in the aforementioned manner undercuts or injection-molded, window-shaped recesses. The reflector holder parts mentioned also continue to have outside the reflector body 5 located soldering portions 8, which together form a footprint for placement on the circuit board 2. With the aforementioned soldering portions 8, the reflector unit 4 can be soldered on the front side of the printed circuit board 2 on preferably opposite sides of the luminous means 3. Due to the segmented design of the reflector holder 7, it is also possible to use printed circuit boards 2 in which conductors run on the front side facing the reflector unit 4, since they are not contacted by the segmented formation or the soldering sections 8 continuously around the illuminant 3.

As the FIGS. 7 and 8th show, the reflector holder 7 does not necessarily have to be poured into the material of the reflector body 5, but it can also only be molded, especially superficially cohesively connected. As Fig. 7 shows, the reflector holder 7 in this case may be formed overall in the form of a ring which is formed by its dimensioning and / or contouring such that it fits on the front-side edge portion 10 of the reflector body 5 or can sit on it.

In this case, the reflector body 5 can advantageously be cast on the aforementioned annular reflector holder 7, for example in such a way that the end-side edge portion 10 of the reflector body 5 is formed on a surface, for example the flat side of the annular reflector holder 7. The annular reflector holder 7 can be inserted, for example, in a casting or injection mold for forming the reflector body 5, so that it rests against a wall of the mold or forms part of the wall. When introducing the liquefied reflector material of the reflector holder 7 is here formed on the forming reflector body. The molded onto the reflector body surface or the corresponding surfaces of the reflector holder 7 in this case form its holding section 9. The reflector body 5 facing away from side or surface of the reflector holder 7 forms the soldering portion 8, with which the reflector holder 7 is soldered to the board.

Claims (15)

Luminaire comprising a printed circuit board (2) on which at least one luminous means (3) is arranged, and a reflector unit (4) with a reflector body (5) which is illuminated by a reflector holder (7) above the luminous means (3) on one 3) carrying printed circuit board (2) is fastened, characterized in that the reflector body (5) with one of the printed circuit board (2) facing end side portion (10) to a holding portion (9) of the reflector body materialinhomogene reflector holder (7) is integrally formed, and the Reflector holder (7) with a metal material existing, outside of the reflector body (5) located soldering portion (8) is soldered to the circuit board (2). Luminaire according to the preceding claim, wherein the reflector holder (7) comprises at least one anchor portion (9) anchored in the interior of the reflector body (5) and at least one soldering portion (8) located outside the reflector body (5). Luminaire according to the preceding claim, wherein the anchor portion (9) viewed in the pulling direction has at least one undercut in the interior of the reflector body (5), preferably in the form of a hook, eyelet or window-shaped holding portion with a holding recess, which can be filled with material of the reflector body , Luminaire according to one of the preceding claims, wherein the holding portion (9) is cast or molded onto the surface of the reflector body (5) or integrally formed in another way. Luminaire according to one of the preceding claims, wherein the reflector body (5) has on its circuit board side a preferably hole-shaped opening (6) which can be placed over the on the printed circuit board (2) illuminant (3), and the reflector holder (7) on a the opening (6) surrounding end face portion (10) of the reflector body (5) is arranged, preferably approximately uniformly over the circumference of the recess (6) distributed portions. Luminaire according to the preceding claim, wherein the reflector holder (7) with its holding portion (9) in / on an edge / surrounding area around the opening (6) around the reflector body (5) is fixed. Luminaire according to one of the preceding claims, wherein the reflector holder (7) has a preferably flat contact surface (11) for placing the reflector unit (4) on the printed circuit board (2). Luminaire according to one of the preceding claims, wherein the reflector holder (7) comprises at least one preferably pin-shaped push-through projection (12) for insertion through the printed circuit board (2) and soldering on one of the reflector unit (4) opposite printed circuit board backside. Luminaire according to one of the preceding claims, wherein the reflector holder (7) is annular. Luminaire according to one of the preceding claims, wherein the reflector holder (7) is segmented and consists of a plurality of separate reflector holder parts. Luminaire according to one of the preceding claims, wherein the reflector holder (7) consists of a metal material which binds with a metallic solder or even forms the solder for the solder joint. Luminaire according to one of the preceding claims, wherein the reflector unit (4) made of plastic, in particular silicone or a silicone-containing material. Method for producing a luminaire according to one of the preceding claims, wherein the reflector unit (4) with its reflector holder (7) and the luminous means (3) or a luminous means (3) carrying light-emitting device respectively soldered to the circuit board. Method according to the preceding claim, wherein the reflector unit (4) and the illuminant holder are positioned on the circuit board (2) in a preparatory step and then, when the reflector unit (4) and the illuminant (3) are positioned on the circuit board (2) the circuit board (2) are soldered in a common soldering step. Method according to one of the two preceding claims, wherein the reflector holder (7) in the prototyping of the reflector unit (4) in / on the material of the reflector body (5) embedded / molded, in particular cast on / molded or molded / molded.

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