DE102017105470B4 - Light assembly - Google Patents

Abstract

Luminaire assembly (10) with a circuit board (14) which has a component side (15) and a mounting side (16), with at least one illuminant (17) and with at least one electrical or electronic component (18) which is located on the component side (15 ) the circuit board (14) are arranged, with a cover part (25) which can be connected to the circuit board (14) via a latching arrangement (40), and when the connection is established, the at least one electrical or electronic component (18) covers, the Cover part (25) has a peripheral wall (26) with a lower edge (37) which, when the connection between the cover part (25) and the circuit board (14) is established, at least partially encloses the component side (15) of the circuit board (14), the Circumferential wall (26) penetrates the plane in which the component side (15) extends and the lower edge (37) of the peripheral wall (26) is at a height distance (x) from a plane in which the mounting side (16) of the circuit board is (14) extends and does not penetrate this plane, the latching arrangement (40) having at least one latching means (41) which is arranged on the cover part (25) and at least one holding means (42) which is attached to the circuit board (14) is arranged, the at least one holding means (42) being arranged at a distance from the component side (15) and being formed by one of the at least one electrical or electronic component (18) or directly adjacent to one of the at least one electrical or electronic component (18) is arranged.

Description

The invention relates to a light assembly with a circuit board, at least one lighting means, at least one electrical or electronic component and a cover part which is set up on one side of the circuit board to cover the at least one electrical or electronic component.

EP 2 921 035 B1 describes a light assembly in which several light emitting diodes are arranged on a circuit board. The circuit board is inserted into a carrier which has a carrier wall with a groove on each of two opposite sides. Fixing elements can be attached to the circuit board. They have a radially protruding fixing arm which can be pivoted into the groove in the support wall by rotating the fixing element. A reflector can be inserted between the support walls above the circuit board. On the reflector there are resilient elements which engage in the grooves in the support walls when the reflector is arranged above the circuit board between the support walls.

DE 10 2011 077 323 A1 describes a light assembly with a circuit board and a cover part. The cover part has a peripheral wall. The peripheral wall is assigned to the component side of the circuit board, the lower edge of the peripheral wall resting on the component side of the circuit board. The diameter of the circuit board and the peripheral wall are the same size. In the circuit board, connecting elements are inserted in a recess and, for example, glued in there. A latching connection with the cover part can be established by means of the connecting elements.

On the basis of the known prior art, it can be seen as the object of the present invention to create a light assembly that can be easily handled during assembly and is of simple construction.

This object is achieved by a lighting assembly with the features of claim 1.

The lamp assembly according to the invention has a printed circuit board with a component side and an assembly side opposite the component side. At least one lighting means and in addition to the at least one lighting means at least one electrical or electronic component are arranged on the equipping side and are electrically connected to an operating circuit. The electrical or electronic component preferably has a function in the operating circuit. A metallic, mechanical component that is only connected to ground or a protective conductor and has no function in the operating circuit is preferably not an electrical or electronic component in the sense of this description. An electrical or electronic component has a single component housing with one or more electrical component connections, it being possible for a single or more electrical and / or electronic element to be present in the component housing, for example also a circuit, such as in the case of an IC component. When a “component” is mentioned below, at least one electrical or electronic component is meant, unless otherwise stated.

A cover part of the light assembly can be connected to the circuit board via a latching arrangement in such a way that the cover part is held directly or indirectly on the circuit board. The latching arrangement is present for ease of handling and not for the final connection of the cover part to the circuit board or to a body. The connection between the cover part and the circuit board via the latching arrangement is used in particular for improved handling, so that the light assembly can be handled as a uniform assembly during assembly, the cover part and the circuit board being held together.

The latching arrangement has at least one latching means on the cover part and at least one holding means on the circuit board. The latching means is preferably arranged directly on the cover part and, in a preferred exemplary embodiment, is embodied integrally with the cover part without a seam or joint. The holding means is preferably arranged indirectly on the circuit board and connected to the circuit board. The at least one latching means and / or the at least one holding means can be made of plastic and / or a metal.

In the embodiment according to the invention, the at least one holding means is arranged at a distance from the component side and is formed by one of the components. For example, the at least one holding means can be present on a component housing or be formed by the component housing. In a further solution according to the invention, the at least one holding means can also be arranged directly adjacent to a component or a component housing. The holding means can therefore be arranged, for example, as a separate element on or directly adjacent to a component housing and connected to the circuit board and / or the component. The at least one holding means is arranged immediately adjacent to the component when it is in contact with the component or is directly connected to it or when the minimum distance between the holding means and the component is small, preferably less than 5 mm or less than 3 mm or less than 1 mm. The distance will viewed as small even if it is less than 20% or 15% or 10% of those dimensions of the component in extension of the minimum distance at right angles to the adjacent component housing.

In the solution according to the invention, the cover part has a peripheral wall with a lower edge which, when the connection between the cover part and the circuit board is established, at least partially encloses the component side of the circuit board, the peripheral wall penetrating the plane in which the component side extends and the lower edge of the Circumferential wall has a height distance to a plane in which the mounting side of the circuit board extends.

In one embodiment, the holding means can be present on one of the existing components or alternatively on a separate holding element, the component or the holding element being attached to the component side of the circuit board by a material connection, in particular a soldered connection and / or an adhesive connection. The at least one component is in any case electrically and mechanically connected by soldering and / or gluing and / or otherwise cohesively on the component side. The separate holding element with the at least one holding means can be an at least partially metallic element that is fastened to a soldering surface or a soldering pad on the component side. The holding element can have a foot part for this purpose. Such a holding element is preferably connected by a soldering process together with the existing electrical or electronic components and / or the at least one illuminant on the component side by soldering.

With the aid of the latching arrangement, the cover part can be held indirectly on the circuit board in a very simple manner. For assembly, the cover part and the circuit board can be handled as one structural unit. The printed circuit board is preferably placed flat with its mounting side on a fastening surface of a body and fastened there by means of a separate fastening device, preferably a screw connection. Such a body can be a heat sink or any other support body for the light assembly.

A holding means and in particular precisely one holding means is preferably assigned to each locking means present. When a connection is established, a latching means works together with a holding means in each case.

The at least one latching means can have a latching projection and / or a latching recess. Correspondingly, the at least one holding means can have a holding projection and / or a holding recess. When the connection is established, the latching arrangement can prevent the cover part from being removed at right angles away from the printed circuit board and effect a corresponding mounting. The latching arrangement can enable or also prevent movement parallel to the circuit board. If the latching arrangement allows a relative movement of the cover part parallel to the printed circuit board, this relative movement can be limited or prevented by other means, for example stops.

In a preferred embodiment, the latching arrangement has at least two holding means. A component, and in particular precisely one component, is arranged between two of the existing holding means. For example, two holding means can be arranged on opposite sides of a component housing.

It is provided, for example, that holding projections of two holding means protrude in opposite directions away from a component or component housing arranged therebetween in opposite directions. Instead of these holding projections, there can also be holding recesses which are open in opposite directions. The retaining recesses are accessible from opposite sides of the component or component housing located between them and are provided and designed to accommodate corresponding latching projections. Finally, it is also possible for a holding projection to be present on one side and a holding recess on the respectively opposite side of the component or component housing. Any combinations of at least one holding projection and / or at least one holding recess are possible.

In a preferred embodiment, at least one of the holding means is arranged on a connection terminal or is formed by a connection terminal. For example, at least one holding means, for example at least one holding projection and / or at least one holding recess, can be present on opposite sides of the connection terminal housing. Because of its size and its mechanical stability, the connection terminal housing is suitable for a corresponding arrangement or design of the at least one holding means. Other larger components, such as inductors or capacitors, can also be used in addition or as an alternative to the connection terminal for a corresponding configuration.

The cover has a peripheral wall that when the connection is established between the Cover part and the circuit board at least partially encloses the component side of the circuit board. The circumferential wall can have recesses or perforations at points at which, for example, access to the electronic circuit, fastening means or the like has to be provided by a connection terminal or other connection means. Otherwise it is preferably completely closed in the circumferential direction.

The cover part can also have a front wall and a light exit opening. A reflector can be present in the area of the light exit opening. The front wall preferably completely encloses the light exit opening or the reflector in the circumferential direction and is connected to the circumferential wall.

It is preferred that when the connection is established between the cover part and the circuit board by means of the latching arrangement, there is a distance between the peripheral wall and a plane in which the mounting side of the circuit board extends. The peripheral wall does not penetrate this plane and a lower edge of the peripheral wall is at a distance from the plane of the assembly side. This ensures that when the light assembly is attached to a fastening surface, no stresses are introduced into the cover part and from the cover part via the latching arrangement into the circuit board or a component on the circuit board. The flat mounting of the mounting side of the circuit board on a fastening surface is possible without hindrance, regardless of the design of the fastening surface.

The at least one latching means is preferably arranged on the peripheral wall and / or on the front wall.

In a preferred embodiment, the at least one holding means is arranged above the component side, i.e. it lies opposite the component side at a distance and is located within a clearance profile which is defined by the outer edge of the circuit board.

It is advantageous if, when the connection is established between the cover part and the circuit board, there remains a play of movement which is defined by the latching arrangement. With such a play of movement, the cover part and the printed circuit board can move relative to one another in accordance with the predetermined play of movement. The remaining play prevents elastic tension from occurring when the connection is established. In particular, if the at least one holding means is formed on a component or attached directly to a component, the remaining play ensures that the electrical connection of the component to the rest of the circuit (soldered connection on the component side) is not stressed or damaged. The maximum play in each spatial direction is preferably less than 1.0 mm or less than 0.5 mm.

• 1 eine schematische perspektivische Darstellung eines Ausführungsbeispiels einer Leuchtenbaugruppe sowie eines Körpers mit einer Befestigungsfläche zur Montage der Leuchtenbaugruppe,
• 2 eine beispielhafte perspektivische Darstellung eines Ausführungsbeispiels einer Leiterplatte mit wenigstens einem Leuchtmittel, mit mehreren elektrischen und/oder elektronischen Bauteilen und mit mehreren unterschiedlichen Haltemitteln,
• 3 eine Teildarstellung der Leuchtenbaugruppe gemäß 1 in einer Schnittdarstellung durch das Abdeckteil zur Veranschaulichung einer Ausführungsform einer Rastanordnung,
• 4 eine perspektivische Teildarstellung einer Leiterplatte der Leuchtenbaugruppe mit Ausführungsbeispielen von Haltemitteln,
• 5 eine blockschaltbildähnliche Prinzipdarstellung eines weiteren Ausführungsbeispiels einer Rastanordnung für ein Haltemittel gemäß 4,
• 6 ein Halteelement mit einem Haltemittel gemäß dem Ausführungsbeispiel aus den 4 und 5 in einer schematischen Draufsicht,
• 7 eine schematische Prinzipdarstellung einer Lötfläche auf der Leiterplatte zum Anbringen eines Halteelements gemäß 4, 5 oder 6 und
• 8 eine Schnittdarstellung durch ein Ausführungsbeispiel eines Abdeckteils der Leuchtenbaugruppe 10 aus 1 entlang einer optischen Achse.

Advantageous embodiments of the invention emerge from the dependent claims, the description and the drawings. Preferred exemplary embodiments of the invention are explained in detail below with reference to the accompanying drawings. Show it:

• 1 a schematic perspective illustration of an embodiment of a light assembly and a body with a mounting surface for mounting the light assembly,
• 2 an exemplary perspective illustration of an embodiment of a circuit board with at least one lighting means, with several electrical and / or electronic components and with several different holding means,
• 3 a partial representation of the light assembly according to 1 in a sectional view through the cover part to illustrate an embodiment of a latching arrangement,
• 4th a perspective partial representation of a circuit board of the light assembly with exemplary embodiments of holding means,
• 5 a block diagram-like basic representation of a further embodiment of a latching arrangement for a retaining means according to FIG 4th ,
• 6th a holding element with a holding means according to the embodiment from FIG 4th and 5 in a schematic plan view,
• 7th a schematic representation of the principle of a soldering surface on the circuit board for attaching a holding element according to FIG 4th , 5 or 6th and
• 8th a sectional view through an embodiment of a cover part of the lamp assembly 10 the end 1 along an optical axis.

1 shows an embodiment of a light assembly 10 as well as a partial representation of a body 11 with a mounting surface 12th for attaching the light assembly 10 . Attaching the light assembly 10 on the mounting surface 12th takes place by means of a fastening device 13th . In the embodiment shown here, the fastening device 13th set up a screw connection between the body 11 and the light assembly 10 manufacture and accordingly has one or more fastening screws 21 on. Instead of the fastening screws 21 other - preferably detachable - positive and / or non-positive connections can also be made by the fastening device 13th be effected.

The light assembly 10 in the exemplary embodiment has a polygonal contour and, for example, the shape of an octagon. The top view of the light assembly 10 The outer contour can also be selected in any other way, for example circular, elliptical, square, rectangular, regularly polygonal, irregularly polygonal or curved and / or straight in sections.

To the light assembly 10 belongs to a circuit board 14th . An embodiment of the circuit board 14th for the luminaire assembly 10 according to 1 is in 2 shown. The circuit board 14th has a component side 15th and one of the component side 15th opposite mounting side 16 . In 2 is the circuit board 14th with a view of the component side 15th shown. On the component side 15th is at least one light source 17th the luminaire assembly 10 arranged, preferably in a central area. At least one lamp 17th can be formed by preferably a semiconductor lighting means, for example a light emitting diode or an organic light emitting diode (OLED). In the drawings, this is at least one light source 17th illustrated in a highly schematic manner by a circular plate.

Adjacent to the at least one lamp 17th is on the component side 15th the circuit board 14th at least one electrical and / or electronic component 18th arranged. An electrical and / or electronic component is understood to be any component that is connected to the operating circuit of the light assembly 10 is electrically connected. Each electrical and / or electronic component has a coherent component housing.

Fastening means or other purely mechanical elements are not understood as electrical components, even if they are connected to ground or a protective conductor for safety reasons, because such purely mechanical elements have no function in the electrical operating circuit of the luminaire assembly.

For attaching the components 18th on the component side 15th is there for every component 18th at least one pad 19th available. The soldering surfaces are in accordance with the required switching of the operating circuit 19th Electrically connected via conductor tracks (not shown) and / or other electrical connection means.

In the embodiment illustrated here, the circuit board 14th one or more mounting holes 20th through which the mounting screws 21 passed through and with the body 11 can be connected.

To the light assembly 10 also includes a cover part 25th . The cover part 25th is set up to have the at least one component 18th in a space between the cover part 25th and the circuit board 14th to be recorded and covered if there is no external access to the component 18th is required. An embodiment for a cover part 25th is in the 1 and 8th illustrated. The cover part 25th has a peripheral wall in the embodiment 26th who have favourited the circuit board 14th according to their contour at least partially and for example completely encloses. One or more wall recesses can be made in the peripheral wall 27 ( 1 ) be present for accessibility to one on the circuit board 14th arranged component 18th to enable. In the exemplary embodiment, there is at least one such wall recess 27 present to provide access to a connection terminal 28 to enable. The connection terminal 28 has one, two, or more electrical connections to make electrical conductors to the light assembly 10 and in particular the operating circuit of the light assembly 10 to be connected at least electrically and, according to the example, also mechanically. The connection terminal 28 is therefore at or near an edge of the circuit board 14th arranged so that they are immediately behind the wall recess 27 is accessible. The contour of the peripheral wall 26th is on the outer contour of the circuit board 14th customized.

At a distance from the circuit board 14th and, for example, essentially parallel or slightly inclined with respect to the plane in which the circuit board is located 14th extends, has the cover 25th a front wall 29 on, which is attached to the perimeter wall 26th connects. The front wall 29 is flat in the embodiment, but could alternatively also be concave or convex. The front wall is in a circumferential direction around an optical axis A. the luminaire assembly 10 closed ring-shaped and arranged concentrically to it, for example.

Concentric to the optical axis A. has the cover part 25th a light exit opening 30th . Following the front wall 29 becomes the light exit opening 30th through a reflector 31 limited. The reflector 31 is an integral part of the cover part in the exemplary embodiment 25th and can have a reflective or mirrored reflector surface 32 exhibit. Seen in cross section, the reflector surface 32 have a concavely curved and in particular parabolic segment-shaped curved shape. On the one on the front wall 29 opposite side joins the reflector 31 a back wall 33 of the cover part 25th on. In the back wall 33 is to form the light exit opening 30th a central breakthrough 34 present that are concentric to the optical axis A. is arranged and in the assembled state around the at least one lamp 17th is arranged around ( 1 ).

The in 8th illustrated embodiment is a bottom edge 37 the perimeter wall 26th in a common plane with that of the reflector 31 facing away from the underside of the rear wall 33 arranged. Alternatively, the lower edge 37 also lie in a plane that is not with the underside of the back wall 33 matches and preferably slightly below the underside of the rear wall 33 is arranged. This encloses the peripheral wall 26th not just the area above the level of the component side 15th , but also at least partially the circumferential edge of the circuit board 14th , which is shown schematically in the 3 and 5 can be seen.

In the 1 and 8th is also shown that in the back wall 33 one or more through holes 35 are available that are used to mount the light assembly 10 with the at least one mounting hole 20th in the circuit board 14th can be aligned so that the mounting screws 21 for attaching the light assembly 10 on the body 11 can be inserted through. To provide space for attaching the fastening screws 21 to have is the back wall 33 starting from an annular section 33a around the central opening 34 around by one or more cantilevered sections 33b from the optical axis A. expanded outwards, according to the example at two opposite the optical axis A. diametrically opposite points each have a cantilevered section 33b is available. Any cantilevered section 33b extends into a gap 36 inside, the one in the reflector 31 is in place to access the through hole 35 to enable. The gap 36 in the reflector 31 is bounded by wall sections that form the cantilevered section 33b the back wall 33 with the reflector 31 or the reflector surface 32 connect what is particularly in 1 can be seen. It goes without saying that even more than two columns 36 each with one or more through holes 35 in the respective cantilevered section 33b may be present. However, it is preferred to use the number of breaks in the reflector 31 to minimize. To secure against a rotary movement around the optical axis A. are therefore two columns 36 each with one or more through holes 35 on the cover part 25th available.

Before the light assembly 10 on the body 11 is attached, the cover part 25th already on the circuit board 14th be held so that the circuit board 14th with the at least one lamp 17th and the at least one component 18th together with the cover part 25th can be handled. A latching arrangement is used for this purpose 40 , by means of which a non-positive and / or positive connection between the cover part 25th and the circuit board 14th can be produced and, in some exemplary embodiments, can also be released again. To the locking arrangement 40 belongs at least one locking means 41 on the cover part 25th and at least one holding means 42 that came with the circuit board 14th is directly or indirectly connected. Both the locking means 41 , as well as the holding means 42 can be formed by a projection or a recess. One locking device each 41 and a holding means 42 are designed to be adapted to one another in such a way that, when the connection is established, they engage and / or engage behind one another in order to remove the cover part 25th parallel in the direction of the optical axis A. from the circuit board 14th prevent or counteract this.

Preferably are on the cover 25th several locking means 41 and accordingly on the circuit board 14th several each one locking means 41 associated holding means 42 available. It is possible to use the locking means 41 to be carried out differently from one another and accordingly the holding means 42 adapted to design also different from each other.

In 3 are the first locking means 41a illustrates, each one locking tongue 43 have, starting from the front wall 29 of the cover part 25th adjacent to the peripheral wall 26th and, for example, behind the wall recess 27 away to a respective free end 44 extends towards. In the area of the free end 44 is a locking projection 45 formed, which extends across the locking tongue 43 extends away. Like it in 3 illustrated are in a transverse direction Q at a distance from one another two first latching means 41a present, wherein the locking projections 45 to extend towards each other. The locking projections 45 In the exemplary embodiment, seen in cross section, they have an approximately triangular shape and form a locking surface 46 that are essentially perpendicular to the optical axis A. or inclined at a small acute angle to it.

Every first locking device 41a is a first holding means 42a assigned. The first holding means 42a has a retaining projection 47 on, which is designed similarly to the locking projection 45 and analogous to the locking area 46 a holding surface 48 having. When the connection is established between the first locking means 41a and the first holding means 42a there is a locking surface in each case 46 at an assigned holding surface 48 at or at a distance with the formation of a movement game opposite. The play is preferably less than 1 mm and more preferably less than 0.5 mm.

The first holding means 42a are on opposite sides of a component 18th and according to the example of the connection terminal 28 arranged and preferably integrally without seam and joint with the component housing 49 of the component in question 18th and according to the example of the connection terminal 28 executed. The retaining protrusions 47 protrude from the component housing 49 in the transverse direction Q viewed in opposite directions from each other and from the component housing 49 path.

In a modified embodiment, the could on the component housing 49 trained first holding means 42a can also be arranged on a separate holding element, which is designed for example as a sheet metal part and adjacent to the component housing 49 arranged and with the circuit board 14th is connected or directly to the component housing 49 connected is. For example, the retaining projections 47 be arranged on two parallel legs of a U-shaped sheet metal part, the parallel legs through one in the transverse direction Q extending legs are connected, which is located between the circuit board 14th and the component housing 49 can extend. The two parallel legs of such a holding part can be attached to the component housing 49 or with a small lateral distance d be arranged adjacent to the component housing. This distance d is preferably less than 5 mm and more preferably less than 3 mm and more preferably less than 1 mm. The first two holding means 42a could in a further modification also on separate components 18th or holding elements can be arranged.

When the locking connection is established between the first locking means 41a and the first holding means 42a are the free ends 44 the locking tongues 43 at a distance from the component side 15th the circuit board 14th arranged. The one to the reflector 31 remote lower side of the rear wall 33 of the cover part 25th lies at least in sections on the component side 15th the circuit board 14th on. Preferably the edge is located 37 the perimeter wall 26th laterally offset outside of the by the outer contour of the circuit board 14th defined clearance profile. Like it in 5 is illustrated penetrates the peripheral wall 26th the level in which the mounting side is 16 the circuit board 14th extends, not and the edge 37 is with a height distance x arranged at this level.

In the preferred embodiment, the latching arrangement 40 in addition to the at least one first latching means 41a and the at least one first holding means 42a at least one second locking means 41b and at least one second holding means 42b on, which is different from the respective first locking means 41a or first holding means 42a are trained. The second locking means 41b and the second holding means 42b are particularly in the 5 to recognize.

The second locking means 41b is also available as a locking projection 45 with a locking surface 46 formed, the locking surface 46 of the second locking means 41b has a normal vector which is approximately parallel to the circumferential wall 26th extends and when the connection is established at least from the component side 15th points away. The retaining protrusion 45 protrudes from the perimeter wall 26th inside away. The retaining protrusion 45 is for example in the area of the edge 37 or formed immediately thereafter.

The second holding means 42b is as a retaining projection 47 executed on a separate holding element 53 is available. The holding element 53 is designed as a sheet metal part, preferably as a stamped and bent part. It has a foot section 54 and one approximately perpendicular to the foot section 54 extending holding section 55 . From the holding section 55 the retaining projection protrudes 47 on the the foot section 54 opposite side away. For example, the retaining projection 47 by one from the holding section 55 separated and bent tongue or tab may be formed so that it is integral and in one piece with the retaining element 53 is trained.

In 6th an alternative embodiment is illustrated by the dotted lines, in which the holding means as a holding recess 52 is executed, in which a locking projection 45 can intervene.

The holding section 55 and the foot section 54 preferably form an approximately right angle to one another. In the exemplary embodiment, the holding section 55 and the foot section 54 shown as rectangular contoured sections. Other contours and shapes are also possible.

The holding element 53 has no electrical or electronic function in the operating circuit of the light assembly 10 . It is therefore not a component 18th in the sense of the present description.

The holding element 53 is by means of its foot section 54 by a soldered connection 56 ( 5 ) with the circuit board 14th connected and on the component side 15th mechanically fastened. The solder joint 56 can be done before, at the same time or afterwards with the production of the soldered connections of the components 18th with corresponding soldering areas 19th on the component side 15th getting produced. This makes it possible to use the holding elements 53 in the same way on the component side 15th to be attached like the components 18th which can be implemented at least partially as so-called SMD components.

The holding element 53 is preferably on the edge of the circuit board 14th arranged so that the retaining projection 47 at least partially outwards over the edge of the circuit board 14th protrudes. At this point there is a locking connection with the locking projection 45 the second locking means 41b manufacturable so that the peripheral wall 26th the area of the component side 15th with the at least one component 18th encloses and the peripheral edge of the circuit board 14th can at least partially enclose (compare 3 and 5 ). It is important that the bottom edge 37 the perimeter wall 26th not through the plane of the mounting side 16 protrudes through.

The locking arrangement 40 in the exemplary embodiment described here preferably has both at least one first latching means 41a , at least one second locking means 41b and an associated first holding means in each case 42a or second holding means 42b . As is particularly the case in 2 can be seen is on the component housing 49 the connection terminal 28 a first holding means on opposite sides 42a and there are also two retaining elements 53 on the circuit board 14th attached, each with a second holding means 42b exhibit. The cover part accordingly has 25th two first locking means 41a for the first holding means 42a on the component housing 49 the connection terminal 28 as well as two second locking means 41b on the peripheral wall 26th , each with a holding element 53 or a second holding means 42b assigned. This allows the cover 25th in three places, namely the component housing 49 the connection terminal 28 as well as the two retaining elements 53 on the circuit board 14th being held. These three points are preferably regular or irregular in the circumferential direction around the optical axis A. arranged distributed. A retaining element 53 can be from a component 18th with at least one holding means 42 and / or another holding element 53 have a minimum distance, for example 3-5 cm.

The holding element 53 with the second holding means 42b is shown on the circuit board as follows 14th attached:

First, a preliminary fastening of the holding element 53 on the component side 15th produced by an adhesive connection. For this purpose, a soldering surface is placed between 19th and the foot section 54 a glue dot or an adhesive surface with an adhesive K generated which the position and the orientation of the holding element 53 relative to the circuit board 14th pretends. The adhesive K is preferably in an adhesive recess 56 arranged. The adhesive recess 56 can in the soldering area 19th available and from the component side 15th be open at the top and / or the adhesive recess 56 can at the foot section 54 be present and to that of the soldering surface 19th facing side of the foot part 54 be open to it. The adhesive K that goes into the adhesive recess 56 is introduced, therefore ensures a preliminary fixation of the holding element 53 on the soldering surface 19th and at the same time does not hinder the subsequent production of the soldered connection between the soldering surface 19th and the foot section 54 outside of the adhesive recess 56 . In the 6th and 7th are rectangular adhesive recesses 56 in the foot section 54 on the one hand and in the soldering surface 19th on the other hand illustrated by way of example. The contour, shape, size, etc. of such an adhesive recess 56 can in principle be freely selected. The adhesive recess 56 could also be on the edge of the foot section 54 or on the soldering surface 19th be present or the foot section 54 or the soldering surface 19th divide completely into two areas. It is also possible to have more than one adhesive recess 56 in the soldering area 19th and / or the foot section 54 to be provided.

After gluing the retaining element 53 on the soldering surface 19th can then in one soldering process by also soldering the components 18th with the relevant soldering surfaces 19th is produced, the holding element 53 through the solder joint 56 on the component side 15th and especially the soldering surface 19th be attached. The strength of this solder joint 56 is large enough to hold the cover 25th when assembling the light assembly 10 on the body 11 and to ensure prior handling. A permanent fixation of the cover part 25th on the circuit board 14th must through the locking arrangement 40 not be effected, because the fixed connection is made by the subsequent fastening of the light assembly 10 on the body 11 by means of the fastening device 13th achieved. Through the fastening device 13th also becomes the cover part 25th on the circuit board 14th held.

After attaching the light assembly 10 on the mounting surface 12th of the body 11 is the mounting side 16 the circuit board 14th flat on the mounting surface 12th on. This also enables a good heat-conducting transition between the light assembly 10 and the body 11 be created, for example, when the body 11 is made of a material that conducts heat well, such as metal, preferably aluminum. On the mounting surface 12th and / or the mounting side 16 the circuit board 14th a thermally conductive layer can also be applied.

The invention relates to a light assembly 10 with a circuit board 14th and a cover part 25th . On one component side 15th the circuit board 14th is at least one light source 17th and at least one electrical and / or electronic component 18th arranged. A locking arrangement 40 is available and set up to provide a preliminary connection between the cover part 25th and the circuit board 14th for joint handling. The locking arrangement 40 has at least one locking means 41 on the cover part 25th and at least one associated holding means 42 on that on a holding element 53 and / or a component housing 49 arranged and with the circuit board 14th connected is. The holding means 42 is immediately adjacent to a component housing 49 of a component 18th arranged or on the component housing 49 formed or on a holding element 53 present, that by a soldered connection 56 on the component side 15th the circuit board 14th is appropriate.

List of reference symbols

10

Light assembly

11

body

12th

Mounting surface

13th

Fastening device

14th

Circuit board

15th

Component side

16

Mounting side

17th

Bulbs

18th

Component

19th

Soldering area

20th

Mounting hole

21

Fastening screw

25th

Cover part

26th

Perimeter wall

27

Wall recess

28

Connection terminal

29

Front wall

30th

Light exit opening

31

reflector

32

Reflector surface

33

Back wall

33a

annular section of the rear wall

33b

cantilevered section of the rear wall

34

central breakthrough

35

Through hole

36

gap

37

edge

40

Locking arrangement

41

Locking means

41a

first locking means

41b

second locking means

42

Holding means

42a

first holding means

42b

second holding means

43

Locking tongue

44

free end of the locking tongue

45

Locking projection

46

Locking surface

47

Retaining protrusion

48

Holding surface

49

Component housing

52

Retaining recess

53

Retaining element

54

Foot section

55

Holding section

56

Adhesive recess

A.

optical axis

d

distance

K

adhesive

Q

Transverse direction

x

distance

Claims (12)

Luminaire assembly (10) with a printed circuit board (14) which has a component side (15) and a mounting side (16), with at least one lamp (17) and with at least one electrical or electronic component (18) which is located on the component side (15 ) the circuit board (14) are arranged, with a cover part (25) which can be connected to the circuit board (14) via a latching arrangement (40), and when the connection is established covers the at least one electrical or electronic component (18), the Cover part (25) has a peripheral wall (26) with a lower edge (37) which, when the connection between the cover part (25) and the printed circuit board (14) is established, at least partially encloses the component side (15) of the printed circuit board (14), the Circumferential wall (26) penetrates the plane in which the component side (15) extends and the lower edge (37) of the peripheral wall (26) is at a height distance (x) from a plane in which the mounting side (16) of the circuit board is te (14) extends and does not penetrate this plane, the latching arrangement (40) having at least one latching means (41) which is arranged on the cover part (25) and at least one holding means (42) which is attached to the circuit board (14 ) is arranged, wherein the at least one holding means (42) is arranged at a distance from the component side (15) and is formed by one of the at least one electrical or electronic component (18) or is arranged directly adjacent to one of the at least one electrical or electronic component (18). Lighting assembly according to Claim 1 , characterized in that each existing latching means (41) is assigned a holding means (42). Luminaire assembly according to one of the preceding claims, characterized in that the at least one latching means (41) has a latching projection (45) and / or a latching recess. Luminaire assembly according to one of the preceding claims, characterized in that the at least one holding means (42) has a holding projection (47) and / or a holding recess (52). Luminaire assembly according to one of the preceding claims, characterized in that the latching arrangement (40) has at least two holding means (41), between which a component housing (49) of one of the at least one electrical or electronic component (18) is arranged. Lighting assembly according to Claim 4 and after Claim 5 , characterized in that the holding projections (47) of the holding means (42) protrude in opposite directions from the electrical or electronic component (18) arranged therebetween or that the holding recesses (52) of the holding means (42) are open in opposite directions. Luminaire assembly according to one of the preceding claims, characterized in that the at least one holding means (42) is arranged on a connection terminal (28) or is formed by a connection terminal (28). Lighting assembly according to one of the preceding Claims 1 , characterized in that the cover part (25) has a front wall (29) which encloses a light exit opening (30) of the cover part (25) and which is connected to the peripheral wall (26). Luminaire assembly according to one of the preceding claims, characterized in that the at least one latching means (41) is arranged on the peripheral wall (26) and / or on the front wall (29). Luminaire assembly according to one of the preceding claims, characterized in that the at least one holding means (42) is arranged above the fitting side (15). Luminaire assembly according to one of the preceding claims, characterized in that when the connection is established between the cover part (25) and the circuit board (14) there remains a play of movement by which the cover part (25) and the circuit board (14) can be moved relative to one another. Luminaire assembly according to one of the preceding claims, characterized in that there is a fastening device (13) which is designed to fasten the cover part (25) and the circuit board (14) to a body (11) so that the mounting side (16 ) the printed circuit board (14) rests flat against a fastening surface (12) of the body (11).

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