DE202023105716U1 - Connection element for LED lamps - Google Patents

Abstract

Connection element (110, 210) for electrically connecting an LE D lamp,
- wherein the LED lamp has a circuit board (116, 216) which is provided with contact fields (139, 239) for electrically supplying the LED (117, 217),
- with a substantially annular frame which is intended to cover the circuit board (116, 216) and hold it mechanically on an arrangement surface of a counter bearing (118, 218),
- with a contact arrangement which is mounted in the frame and serves to supply the LED (117, 217) with electricity, characterized in that
- the frame is divided into a first ring (111, 211) and a second ring (112, 212),
- the first ring (111, 211) is intended to surround the circuit board (116, 216) and to hold it in a parallel direction to the arrangement surface of the counter bearing (118, 218),
- the second ring (112, 212) overlaps the circuit board (116, 216) at least in some areas and is intended to hold the circuit board (116, 216) in the vertical direction to the surface of the counter bearing (118, 218).

Description

The invention relates to a connection element for the electrical connection of an LED lamp, the LED lamp having a circuit board which is provided with contact fields for the electrical supply of the LED, and with a substantially annular frame which is intended to cover the circuit board and to be held mechanically on an arrangement surface of a counter bearing, and with a contact arrangement which is mounted in the frame and serves to supply the LED electrically.

A generic connection element is in the German patent DE 10 2008 005 823 B4 disclosed to the applicant. It is a ring element that covers a circuit board and is able to hold the circuit board between itself and a counter bearing, in particular a heat sink. For this purpose, the ring element is attached to the counter bearing using, for example, screw bolts. It sits on the circuit board with part of its surface facing the circuit board. The ring element carries contacts in contact chambers. These contacts have a clamping section into which the stripped end of a connecting conductor can be inserted. The connecting conductor is held in the clamping section and electrically contacted. Each contact then has spring legs that serve as a pressure contact and rest on contact fields on the circuit board. The connection element from the aforementioned patent therefore serves both for electrical contacting and for mechanically holding the circuit board on a counter bearing. The circuit board itself has an LED. It therefore represents a light source that is used in lights instead of more familiar incandescent filament lamps or similar conventional light sources.

Generic connection elements have proven extremely successful in practice and are used in particular for spot lighting where they use LED lamps.

LED technology has developed significantly in the meantime. Circuit boards with attached LEDs are now available in a large number of luminosities and outputs, which is why the shape and, above all, the size of the circuit boards and the LEDs arranged on them vary greatly from manufacturer to manufacturer and in different performance classes.

There are therefore a large number of generic connection elements to be found on the market, each of which allows many specific LED circuit boards from a specific manufacturer and a specific performance class to be used. This is fundamentally advantageous because suitable connection elements are available for every application. However, this offer does not meet the requirements of the lighting industry. There, sub-components of luminaires are kept pre-assembled so that they can then be finally assembled when a specific type of luminaire is accepted.

For example, a certain type of lamp is offered in different performance levels, i.e. with different luminosity or color temperature of the lamp. On the one hand, the uniform housing components are available for this type of luminaire. On the other hand, the actual lighting device - usually consisting of an LED lamp mounted on a suitably sized heat sink - is stocked in different versions. In this way, when an incoming lamp order is received, a modular system can be used, which enables simple final assembly of the requested lamp.

However, the disadvantage here is that there is a large number of lighting devices in stock. The completely pre-assembled unit consisting of LED lamps, connection element and suitable heat sink represents a not insignificant value of the actual lamp. Depending on the variety of variants of a lamp type, a large amount of stock is required.

The object of the invention is to create a suitable connection element which can be used more flexibly with regard to the different circuit board variants of LED lamps.

• - der Rahmen in einen ersten Ring und einen zweiten Ring geteilt ist,
• - der erste Ring dazu vorgesehen ist, die Leiterplatte zu umgeben und in Parallelrichtung zu der Anordnungsfläche des Gegenlagers zu halten,
• - der zweite Ring die Leiterplatte zumindest bereichsweise überfängt und dazu vorgesehen ist, die Leiterplatte in Vertikalrichtung zu der Oberfläche des Gegenlagers zu halten.

The task is solved by a connection element with the features of claim 1, in particular its characterizing features, according to which

• - the frame is divided into a first ring and a second ring,
• - the first ring is intended to surround the circuit board and to hold it in a parallel direction to the arrangement surface of the counter bearing,
• - The second ring overlaps the circuit board at least in some areas and is intended to hold the circuit board in the vertical direction to the surface of the counter bearing.

The division of the connection element provided by the invention into a first ring, which takes over the lateral holding of the circuit board on a counter bearing and a second ring, which covers the circuit board, i.e. rests on the circuit board in order to hold it in a vertical direction to the surface of the counter bearing , initially allows the level of pre-assembly of the lighting device to be reduced. The assembly, i.e. the insertion zening the circuit board with LED into the first ring and then fixing the circuit board in the vertical direction can happen at a later date. In this way, a partially assembled unit consisting of the first ring and counter bearing can be completed at a later date with an LED circuit board to be selected with regard to its power and light color or similar properties. Assuming a uniform circuit board size, the required LED circuit boards can only be added shortly before the final assembly of the actual light.

• - der erste Ring wenigstens ein Halteteil aufweist,
• - der zweite Ring wenigstens Koppelteil aufweist,
• - das Halteteil und das Koppelteil miteinander zusammenwirken, um den zweiten Ring am ersten Ring zu befestigen.

The invention preferably provides that

• - the first ring has at least one holding part,
• - the second ring has at least a coupling part,
• - the holding part and the coupling part cooperate with each other to attach the second ring to the first ring.

In this way, both rings can be arranged firmly together and joined together to form a structural unit.

This is particularly advantageous if one of the rings is intended to be fixed to the counter bearing with fastening means in order to mechanically anchor the circuit board.

Then only one of the rings has to be fixed to the counter bearing in order to attach the entire structural unit, i.e. the complete connecting element, to the counter bearing.

Specifically, it is provided that only one of the rings, preferably the first ring, is intended to be fixed to the counter bearing with fastening means in order to mechanically anchor the circuit board, whereas the other ring, preferably the second ring, is only fastened to the first ring is to mechanically anchor the circuit board.

In the invention it is provided that the contact arrangement is formed by at least one supply contact, which is intended to be arranged on a contact field of the circuit board for electrical supply and for this purpose in particular forms a pressure contact, preferably a spring strut.

However, it is also conceivable that the contact arrangement comprises at least one connection contact, which serves for the solderless connection of a connection conductor for the electrical supply of the LED and in particular serves as a clamping contact for connection of a stripped connection conductor.

In the two-part connection element proposed by the invention, it is possible that the connection contact and the supply contact are formed from one and the same component and only one of the two rings, i.e. either the first ring or the second ring, carries the contact arrangement.

• - die aus dem Anschlusskontakt und dem Versorgungskontakt bestehende Kontaktanordnung aus zwei voneinander unabhängigen Kontaktbauteilen gebildet ist,
• - einer der Ringe, insbesondere der erste Ring, den Anschlusskontakt trägt,
• - der andere Ring, insbesondere der zweite Ring den Versorgungskontakt trägt,
• - der Anschlusskontakt und der Versorgungskontakt miteinander eine elektrische Verbindung eingehen, wenn die Ringe in einem zusammengesetzten, den Rahmen bildenden Zustand vereint sind.

It is also conceivable that

• - the contact arrangement consisting of the connection contact and the supply contact is formed from two independent contact components,
• - one of the rings, in particular the first ring, carries the connection contact,
• - the other ring, in particular the second ring, carries the supply contact,
• - the connection contact and the supply contact establish an electrical connection with one another when the rings are united in an assembled state forming the frame.

In this embodiment, the wiring, which is often carried out manually and is therefore costly, can be carried out before the final assembly of the luminaire. The lighting device could therefore consist of the heat sink, the first ring and the connection wiring made on the first ring, whereas the LED circuit board and the second ring are only inserted before the final assembly of the lamp. It is then provided that the attachment of the first ring to the second ring also electrically connects the connection contact and the supply contact to one another, with the supply contact simultaneously establishing an electrical connection with the contact fields of the LED circuit board.

The invention provides that an inner contour of the first ring has stop surfaces which are intended to cooperate with edge edges of the circuit board in order to hold the circuit board in a parallel direction to the arrangement surface of the counter bearing, the first ring for this purpose in particular at least the outer contour of the circuit board partially absorbs.

A first ring designed in this way is suitable for holding at least printed circuit boards of a certain type or a defined outer contour in the horizontal direction essentially without play, i.e. parallel to the arrangement surface of the counter bearing, and thus ensuring a defined alignment of the printed circuit board or the LED arranged on the printed circuit board to guarantee. It is conceivable that the inner contour of the first ring only partially accommodates the outer contour of a circuit board to be inserted. It's think bar that other parts of the inner contour of the first ring are adapted to the outer contour of a differently constructed circuit board. In this way, several variants of circuit boards with LEDs arranged on them can be held by the first ring.

A specific design of the connection element according to the invention provides that the first ring and the second ring are mounted one inside the other, in particular mounted coaxially inside one another, the first ring being an outer ring and surrounding the second ring designed as an inner ring.

Even if rings mounted one inside the other, in particular rings mounted coaxially inside one another, represent only a preferred embodiment, this construction does have some advantages. When the rings are stored one inside the other, certain requirements, such as the centering of the LED circuit board and the centering of the second ring with regard to the light exit direction of the LED, can be made particularly easy.

In addition, you get two components that create opportunities to accommodate certain technical devices such as contacts or other elements that are essential for the function of the connection element.

First of all, it is provided that the inner ring carries at least one locking element with which the inner ring is fastened within the outer ring.

Using the locking element, the inner ring can be anchored particularly easily in the outer ring.

It is then provided that the outer ring has at least one clamping element, in particular a tension spring, which is intended to clamp the inner ring in the direction of an LED circuit board located in the connection element or in the direction of the counter bearing.

By means of the clamping element, a contact pressure can be applied to the LED circuit board inserted in the connection element on the counter bearing, in particular the heat sink, via the inner ring. This is a significant advantage for optimizing the heat transfer from the circuit board to the heat sink.

In this context, it is considered that the inner ring has at least one clamping receiving element, which interacts with the clamping element of the outer ring and transmits the clamping forces to the inner ring.

In a specific embodiment it is provided that the inner ring can be inserted into the outer ring in the insertion direction and can be fastened in the outer ring by rotation in the manner of a bayonet lock.

With the help of the bayonet connection, a particularly secure positive connection between the first and second rings is possible, which securely arranges the inner ring in the outer ring even under strong mechanical loads, in particular vibrations.

In this solution it is further provided that the clamping receiving element comes into engagement with the clamping element due to the rotation.

It is possible for the clamping receiving element on the inner ring side to also serve as a locking element. However, it is easily conceivable that the clamping element and the clamping receiving element already interact with one another before the rotation that causes the bayonet-like fixation. In this case, it is preferred that the clamping receiving element on the inner ring side and the locking element on the inner ring side represent two independent components.

In one embodiment it is provided that the outer ring forms a holding element, in particular a locking projection, which cooperates with the locking element of the inner ring in order to hold the inner ring in the outer ring.

In this embodiment in particular, it is intended that the license plate part claim 18 should be inserted.

This embodiment, in which the holding element and the clamping element are formed by one and the same component, makes it possible to form simple, component-reduced connection elements.

An alternative fixation of the inner ring in the outer ring can be achieved by inserting the inner ring into the outer ring in the insertion direction and holding it in the outer ring by a locking connection.

In this embodiment, the anchoring of the inner ring in the outer ring is accomplished simply by inserting the inner ring into the outer ring, in which the locking element of the inner ring engages behind at least one locking projection.

The invention particularly provides that the first ring is designed as a universal component which is able to accommodate a large number of different circuit boards, whereas the second ring is designed as an individual component for a specific circuit board or a group of specific circuit boards common circuit board geometry or common LED size.

In this way, a significant disadvantage of the prior art can be eliminated, namely the need to provide a large number of different connection elements, each of which is adapted to one or only a few different LED circuit boards.

Specifically, this inventive idea can be implemented by providing an adapter frame which adapts the inner contour of the first ring to the outer contour of the circuit board in order to ensure a substantially play-free mounting of the circuit board in the first ring.

In such a connection element, the first ring or the outer ring is designed as a universal component. The inner contour of the outer ring is adapted to large LED circuit boards, whereas when using smaller LED circuit boards, a suitable adapter frame is inserted into the outer ring.

It is also conceivable that the first ring or the outer ring has an inner contour exclusively for receiving adapter frames and, depending on the LED circuit board used, the appropriate adapter frame is to be inserted into the first ring.

Furthermore, it is conceivable that the adapter frame is part of the second ring, so that this second ring accommodates the circuit board.

In this case, the advantage can be seen in the fact that there is no need for an adapter frame or, in case of doubt, for an adaptation of the first ring, which serves as a universal component. Only the second ring or inner ring is designed specifically for the circuit board. The circuit board is ideally delivered together with the specific inner ring. The LED PCB may already be pre-assembled on the specific inner ring. In this way, only one assembly step is required to fully assemble the connection element according to this invention and insert it into the lamp.

• 1: eine erste Ausführungsform der Erfindung, dargestellt in Explosionsansicht;
• 2a: eine perspektivische Darstellung auf die Oberseite des ersten Ringes/Außenringes gemäß 1;
• 2b: der erste Ring/Außenring gemäß 2a in Ansicht von oben;
• 2c: der erste Ring/Außenring gemäß 2a in Ansicht von unten ohne Anschlusskontakte;
• 3a: Darstellung gemäß 2a mit Anschlusskontakten;
• 3b: eine Schnittansicht des ersten Rings/Außenringes entsprechend der Schnittlinie III B-III B in 3a;
• 4: eine Ansicht von oben auf den montierten ersten
• Ring/Außenring unter Weglassen des Kühlkörpers, 5a: eine perspektivische Ansicht auf den ersten Ring/Außenring von oben mit eingesetzter LED-Leiterplatte und unter Weglassen des Kühlkörpers;
• 5b: die Ansicht von oben auf den ersten Ring/Außenring in Anlehnung an 5a;
• 6a: eine perspektivische Ansicht von oben auf den zweiten Ring/Innenring der ersten Ausführungsform nach 1 ;
• 6b: eine Ansicht von oben auf den zweiten Ring/Innenring gemäß 6a;
• 6c: eine Seitenansicht auf den zweiten Ring/Innenring gemäß Ansichtspfeil VI C in 6b;
• 7a: eine perspektivische Ansicht auf die erste Ausführungsform der Erfindung nach 1 in zusammengesetzter Form und mit zweitem Ring/Innenring in Losstellung;
• 7b: die Darstellung gemäß 7a in Ansicht von oben ohne Kühlkörper;
• 7c: eine Schnittdarstellung gemäß Schnittlinie VII C-VII C in 7b inklusive Kühlkörper;
• 7d: eine Schnittdarstellung gemäß Schnittlinie VII D-VII D in 7b ohne Kühlkörper;
• 8a: die erste Ausführungsform der Erfindung nach 1 in zusammengesetzter Form mit Innenring in Riegelstellung und ohne Darstellung des Kühlkörpers;
• 8b: die Darstellung gemäß 1 in Ansicht von oben;
• 8c: eine Schnittdarstellung gemäß Schnittlinie VIII C-VIII C in 8b;
• 8d: eine Schnittdarstellung gemäß Schnittlinie VIII D-VIII D in 8b;
• 8e: eine Schnittdarstellung gemäß Schnittlinie VIII E-VIII E in 8b;
• 9: eine perspektivische Ansicht einer zweiten Ausführungsform der Erfindung in Explosionsdarstellung;
• 10a: der erste Ring/Innenring der zweiten Ausführungsform nach 9 in perspektivischer Ansicht von oben;
• 10b: die Darstellung nach 10c in Ansicht von oben;
• 10c: der erste Ring/Innenring der zweiten Ausführungsform in Ansicht von unten ohne Kontakte und ohne Spannelemente;
• 11a: die Darstellung gemäß 10c mit Kontakten und mit Spannelementen;
• 11 b: eine Schnittansicht des ersten Ringes/Außenring gemäß Schnittlinie XI B-XI B in 11a;
• 11c: eine Schnittdarstellung des ersten Ringes/Außenring gemäß Schnittlinie XI C-XI C in 11a;
• 12a: eine Ansicht auf den montierten ersten Ring/Außenring der zweiten Ausführungsform der Erfindung in Ansicht von oben;
• 12b: die Darstellung gemäß 12a, mit eingelegtem Adapterrahmen;
• 13a: eine Darstellung der zweiten Ausführungsform der Erfindung mit eingelegter LED-Leiterplatte, ohne Kühlkörper und ohne Innenring;
• 13b: die Darstellung nach 13a in Ansicht von oben;
• 13c: eine alternative Darstellung der zweiten Ausführungsform der Erfindung mit eingelegter LED-Leiterplatte und Adapterrahmen, ohne Kühlkörper und ohne Innenring;
• 13d: die Darstellung nach 13c in Ansicht von oben;
• 14a: der zweite Ring/Innenring der zweiten Ausführungsform der Erfindung nach 9, in perspektivischer Ansicht von oben;
• 14b: die Darstellung nach 14a in Ansicht von oben;
• 14c: eine Schnittdarstellung durch den zweiten Ring/Innenring gemäß Schnittlinie XIV C-XIV C in 14b;
• 15a die zweite Ausführungsform der Erfindung nach 9 in zusammengesetztem Zustand ohne Kühlkörper in perspektivischer Ansicht auf die Oberseite;
• 15b: die Darstellung gemäß 15a in Ansicht von oben;
• 15c: eine Schnittdarstellung gemäß Schnittlinie XV C-XV C in 15b.

Further advantages of the invention and a better understanding of it can be found in the following description of two exemplary embodiments. Show it:

• 1 : a first embodiment of the invention, shown in exploded view;
• 2a : a perspective view of the top of the first ring/outer ring according to 1 ;
• 2 B : the first ring/outer ring according to 2a in view from above;
• 2c : the first ring/outer ring according to 2a viewed from below without connection contacts;
• 3a : Representation as per 2a with connection contacts;
• 3b : a sectional view of the first ring/outer ring corresponding to section line III B-III B in 3a ;
• 4 : a view from above of the assembled first
• Ring/outer ring leaving out the heat sink, 5a : a perspective view of the first ring/outer ring from above with the LED circuit board inserted and the heat sink omitted;
• 5b : the view from above of the first ring/outer ring based on 5a ;
• 6a : a perspective view from above of the second ring/inner ring of the first embodiment 1 ;
• 6b : a view from above of the second ring/inner ring according to 6a ;
• 6c : a side view of the second ring/inner ring according to view arrow VI C in 6b ;
• 7a : a perspective view of the first embodiment of the invention 1 in assembled form and with second ring/inner ring in loose position;
• 7b : according to the representation 7a top view without heat sink;
• 7c : a sectional view according to section line VII C-VII C in 7b including heat sink;
• 7d : a sectional view according to section line VII D-VII D in 7b without heat sink;
• 8a : the first embodiment of the invention 1 in assembled form with inner ring in locked position and without representation of the heat sink;
• 8b : according to the representation 1 in view from above;
• 8c : a sectional view according to section line VIII C-VIII C in 8b ;
• 8d : a sectional view according to section line VIII D-VIII D in 8b ;
• 8e : a sectional view according to section line VIII E-VIII E in 8b ;
• 9 : an exploded perspective view of a second embodiment of the invention;
• 10a : the first ring/inner ring according to the second embodiment 9 in perspective view from above;
• 10b : the representation 10c in view from above;
• 10c : the first ring/inner ring of the second embodiment in a view from below without contacts and without clamping elements;
• 11a : according to the representation 10c with contacts and with clamping elements;
• 11 b : a sectional view of the first ring/outer ring according to section line XI B-XI B in 11a ;
• 11c : a sectional view of the first ring/outer ring according to section line XI C-XI C in 11a ;
• 12a : a view of the assembled first ring/outer ring of the second embodiment of the invention in a view from above;
• 12b : according to the representation 12a , with inserted adapter frame;
• 13a : a representation of the second embodiment of the invention with an inserted LED circuit board, without a heat sink and without an inner ring;
• 13b : the representation 13a in view from above;
• 13c : an alternative representation of the second embodiment of the invention with inserted LED circuit board and adapter frame, without heat sink and without inner ring;
• 13d : the representation 13c in view from above;
• 14a : the second ring/inner ring of the second embodiment of the invention 9 , in perspective view from above;
• 14b : the representation 14a in view from above;
• 14c : a sectional view through the second ring/inner ring according to section line XIV C-XIV C in 14b ;
• 15a the second embodiment of the invention 9 in assembled state without heat sink in a perspective view of the top;
• 15b : according to the representation 15a in view from above;
• 15c : a sectional view according to section line XV C-XV C in 15b .

In the 1 until 8th a first embodiment of the invention is provided overall with reference number 100. A second embodiment of the invention is in the 9 until 15 shown and marked overall with reference number 200. Embodiments 100/200 of the invention have a number of similar components. If identical or identical components are used, they are named the same and only differ in that they are assigned to either the number range 100 or the number range 200. Therefore, what was said about the first embodiment always applies to the second embodiment 200, as far as the same or identically acting components are concerned.

The first embodiment of the invention comprises according to 1 a connection element provided overall with the reference number 110. The connection element 110 is essentially composed of a first ring 111 and a second ring 112. The first ring 111 is also referred to as the outer ring. The second ring 112 is referred to as the inner ring. However, this is primarily due to the fact that in the exemplary embodiment the rings are arranged one inside the other and this results in an outer layer for the first ring 111 and an inner layer for the second ring 112. However, the connecting element 110/210 according to the invention of the first embodiment 100 as well as the second embodiment 200 is not limited to this specific - albeit advantageous - embodiment with an outer ring 111 and an inner ring 112.

The connection element 110 also has connection contacts 113 and clamping elements 114, which are designed as tension springs 115.

On the one hand, the connection element 110 interacts with a circuit board 116, which carries an LED 117 as a light source. On the other hand, the connection element 110 cooperates with a counter bearing 118, which is designed as a heat sink 119. Instead of the heat sink 119, the counter bearing 118 can also represent a lighting component of any type.

The connection element 110 is attached to the heat sink 119 using screw bolts 120. The connection element 110 holds the LED circuit board 116 between itself and the heat sink 119.

2a shows the outer ring 111 in a perspective view of its top. The outer ring 111 initially has a base plate 121. The base plate 121 has an opening 122. This opening 122 defines an inner contour 123 of the outer ring 111, which is divided into a rectangular, in particular square, insertion contour 124 and engagement contours 125. The engagement contours 125 merge into the insertion contour 124.

In the present example, the insertion contour 124 is rectangular, in particular square, since the exemplary embodiment uses a correspondingly rectangular, in particular essentially square LED circuit board 116 to explain the function of the connection element 110 in more detail. Different circuit board shapes would lead to a different insertion contour 124.

A ring collar 126 sits on the base plate 121. This ring collar 126 surrounds the opening 122 and initially has receiving holes 126a for the screw bolts 120. As shown in conjunction with 1 As can be seen, the receiving holes 126a also serve to accommodate the holding section 127 of the tension springs 115, the holding section 127 being penetrated by the screw bolts 120 in order to secure the tension springs 115 in the outer ring 111.

Starting from the receiving hole 126a, a passage channel 128 for a tension spring arm 129 extends in the circumferential direction. A support mandrel 130 is arranged in the passage channel 128, which serves as a positioning aid for a correct positioning when assembling the tension springs 115.

The annular collar 126 is recessed at two opposing peripheral sections and thus forms a wall hook receptacle 131. Each wall hook receptacle 131 has a centering surface 132 which is designed to slope obliquely towards the center of the outer ring 111.

2 B , the view from above of the first ring 111 according to 2a , makes it clear that the annular collar 126 has a substantially circular inner contour. However, the circular inner wall sections 133 of the annular collar 126, which run on a common radius around the center M, are initially pierced by stop recesses 134 that are diametrically opposite one another. These have end stop surfaces 135 formed by the inner peripheral wall of the annular collar 126.

The circular inner wall sections 133 of the annular collar 126, which run on a common radius around the center M, are also perforated by diametrically opposed receptacles 136 for clamping pins 137 of the second ring 112 or the inner ring 112. The clamping pin 137 will be discussed later. These recordings 136 are arranged circumferentially offset from the stop recesses 134.

In the view of the underside of the first ring 111 or the outer ring 111 in 2c you can see that this forms two connection chambers 138. In the exemplary embodiment, the connection chambers 138 are open in the direction of the heat sink 119 or counter bearing 118, ie against a light exit direction L of the LED 117, so that the connection contacts 113 (see 1 ) can be used. The connection contacts 113 hold in the connection chamber 138, for example, in a frictional or positive manner, in particular by latching. The connection chambers 138 are then accessible for contacting with a supply contact, not shown, which is carried by the second ring 112 or inner ring 112 in order to ensure an electrical connection with contact fields 139 of the LED when the first ring 111 and the second ring 112 are later connected. Circuit board 116 is included.

3a shows the representation of the first ring 111 according to 2c , i.e. viewed from below. In this illustration, however, the connection contacts 113 are inserted into the connection chambers 138. It is conceivable that the underside of the outer ring 111 is provided with a closure cover (not shown) after assembly of the connection contacts 113, in particular to protect the connection contacts 113 against contact with the counter bearing 118 or heat sink 119. In this way it is ensured that no electrical connection can be established between the connection contacts 113 and the counter bearing 118. However, if the connection contacts 113 are sufficiently spaced from the counter bearing 118 and are stored captively in the connection chamber 138, such a closure cover is not necessary.

It should be noted at this point that the first embodiment 100 provides for a structural separation of connection contacts 113 and a supply contact, not shown. Such a separation is due to the specific exemplary embodiment of the first embodiment, but is not absolutely necessary for the successful implementation of the inventive concept. It is easily conceivable that the connection contact 113 and the supply contact, not shown, form a unitary component which is carried either by the first ring 111 or by the second ring 112.

3b shows a sectional view along section line III B-III B in 3a . The cutting line is laid through the connection contact 113, so that its structure can be used to connect a device (not shown). Connection conductor can be explained. The connection contact 113 has a contact cage 140, the bottom of which is formed by a contact rail 141. The contact rail 141 forms a contact extension 142 (see 3a) which serves for the electrical connection to the supply contact, not shown. A contact side wall 143 carries a contact cover 144, from which a clamping leg 145 originates. The contact side wall 143 connects the contact rail 141 and the contact cover 144. The clamping leg 145 is arranged on the opposite side to the contact extension 142. The clamping leg 145 lies in the contact input 146, which is arranged downstream of a connection channel 147 formed by the outer ring 111 in the conductor insertion direction X.

The connection chamber 138, which is open to the underside U of the first ring 111, can then be seen in the sectional view. The recess of the ring collar 126, which is open towards the top O to form the wall hook receptacle 131, can then be seen.

4 now shows a view from above of the assembled first ring 111. The screw bolts 120 pass through the respective holding section 127 of the tension springs 115, which lie in the receiving holes 126a. The screw bolts 120 engage in threaded receptacles (not designated) of the heat sink 119 and thus anchor the first ring 111 on the heat sink 119.

4 is an example of one possibility of the desired pre-assembly. This structural unit, which is not yet provided with an LED circuit board 116, can be kept in stock as a universal part for a specific type of lamp in order to be equipped with the LED circuit board to be used to individualize the lamp when an order is placed.

5a shows the assembled first ring 111 in a perspective view of its top side. The heat sink 119 has not been shown for clarity purposes. In the outer ring 111 is in 5a the LED circuit board 116 was inserted as part of the assembly of a lamp. It is obvious here that the insertion contour 124 is adapted to the size of the circuit board 116. Using the engagement contours 125, it is possible to remove the LED circuit board 116 both using a removal tool (not shown) and without tools.

As part of the first exemplary embodiment 100, the insertion contour 124 is adapted to the largest LED circuit board 116 to be assumed. Smaller LED circuit boards or differently shaped LED circuit boards can be used by inserting an adapter frame, not shown in the first exemplary embodiment 100, into the insertion contour 124, the inner contour of which in turn accommodates the outer contour of the different LED circuit board 116. In this way, the outer ring 111 is designed as a universal component for a large number of LED circuit boards 116. Deviating from this description, it is conceivable that the insertion contour 124 has not undergone any adaptation to an LED circuit board 116, but is only designed to accommodate adapter frames, which are then each associated with an LED circuit board 116.

5b shows it 5a The situation described again in a view from above. From this view it can be seen that the LED circuit board 116 is held on the counter bearing 118 with virtually no play by the insertion contour 124 in the direction parallel to its support surface. In the exemplary embodiment, a certain amount of fitting clearance is provided in order to insert the LED circuit board 116 into the insertion contour 124. However, it is conceivable to achieve a frictional or positive connection by means of latching elements or spring elements, which are preferably designed to be uniformly cohesive with the first ring 111, in particular with its base plate 121.

6a shows the inner ring 112, i.e. the second ring 112 of the connecting element 110 of the first embodiment 100 of the invention in a perspective view of the top.

The inner ring 112 is formed by an annular wall 148 which surrounds a central LED recess 149. The annular wall 148 falls from its top side O towards its underside U, so that the LED recess 149 is surrounded by a funnel-like recessed annular wall section 150. The funnel-like recessed ring wall section 150 prevents light shading of the light emitted by the LED 117.

The annular wall 148 is essentially circular in its outer circumference. It carries actuating handles 151 that project outwards, which are positioned diametrically opposite one another and serve to anchor the ring 112 in the outer ring 111 by means of a locking movement.

Also projecting outwards and again arranged diametrically opposite one another, the annular wall 148 forms stop elements 152. Each stop element 152 has a stop surface 153 which is aligned parallel to a light exit direction L or vertically to the arrangement surface of the LED board 116 on the counter bearing 118. Each stop surface 153 cooperates with an end stop surface 135 of the stop recesses 134 of the outer ring 111 (see 2 B or. 4 ).

The annular wall 148 then carries on its outer circumference two clamping receiving elements 154 which are diametrically opposite one another and project outwards from the annular wall 148. These clamping receiving elements are specifically designed as clamping pins 137. The clamping receiving elements 154 or clamping pins 137 cooperate with the clamping springs 115, in particular their clamping spring arms 129, in order to clamp the inner ring 112 against the LED circuit board 116. The clamping force therefore acts in the insertion direction E of the LED circuit board 116 into the outer ring 111 or counter to the light exit direction L.

Finally, in the first embodiment 100 of the invention, the inner ring 112 carries two diametrically opposed locking elements 155 on its outer circumference and again projecting outwards. In the present embodiment, the locking element 155 serves as a coupling part in order to fix the inner ring 112 to the outer ring 111. Each locking element 155 is designed as a locking web 156, which extends in the circumferential direction of the inner ring 112.

How 6a As can be seen, the actuating handles 151, the stop elements 152, the clamping receiving elements 154 and the locking elements 155 are arranged circumferentially offset from one another.

6b shows it 6a The situation described again in a view from above of the inner ring 112. From this view it can be seen very clearly that the aforementioned components are actually arranged diametrically opposite one another and are circumferentially offset from one another.

6c shows the inner ring 112 according to arrow VI C in 6b . What is initially striking is that the inner ring 112 forms a collar projection 157 on its underside, which projects against the light exit direction L, i.e. in the direction of the counter bearing 118. This collar projection 157 surrounds the LED 117 and sits on the LED circuit board 116. In a preferred embodiment, it is manufactured oversized and can be deformed elastically or plastically. In this way, manufacturing and material tolerances between the individual components of the connection element 110, the LED circuit board 116 and the counter bearing 118 can be compensated for. A contact pressure exerted by the inner ring 112 on the LED circuit board 116 in the direction of the counter bearing 118 is guaranteed in any case. In this way, the optimal heat transfer from the LED circuit board 116 to the counter bearing 118 or the heat sink 119 is ensured.

In order to transfer the contact pressure via the inner ring 112 to the LED circuit board 116, the clamping pins 137 of the inner ring 112 act with the tension springs 115 (see 1 ) together. For this purpose - as will be explained later - the inner ring 112 is rotated in the locking direction R after it has been inserted into the outer ring 111. This causes them to run in 6c shown clamping pins 137 on the tension springs 115, more precisely on the tension spring arms 129. Each tension spring arm 129 is initially designed to be inclined - starting from the holding section 127 - in the insertion direction E or in the direction of the counter bearing 118. The free end of the tension spring arms 129 is - as in particular 1 can be seen - in the light exit direction L, i.e. bent upwards from the counter bearing 118. As a result, each free end of the tension spring arms 129 forms an anchor nose 158.

The clamping pin 137 is initially provided with an inclined surface 159 running in the locking direction R, which extends towards the top O of the inner ring 112. This is followed in the locking direction R by a support surface 160 which slopes towards the underside U and which merges into a support surface 161 with an orientation parallel to the arrangement surface, i.e. horizontal. In this way, the clamping pin 137 forms an anchor projection 162, in particular via the inclined surface 159 and the adjoining support surface 160.

7a shows the first embodiment 100, as shown in 1 is shown as an exploded view, in assembled form. The heat sink 119 carries the outer ring 111, which is secured to the heat sink 119 via the screw bolts 120. The LED circuit board 116 is inserted into the outer ring 111. The inner ring 112 is placed on the LED circuit board 116 and accommodates the LED 117 in its LED recess 149.

The operating handles 151 sit in the wall hook receptacles 131, with centering bars 163 (see 6c ) on the underside of the operating handles 151 interact with the centering surfaces 132. The clamping pins 137 lie in the receptacles 136 provided for this purpose. The stop elements 152 lie in the stop recesses 134, with the stop surfaces 153 and the end stop surfaces 135 being spaced apart from one another.

The inner ring 112 is located in 7a in its loose position, is therefore not yet anchored in the outer ring 111. In this position it can be easily removed from the outer ring 111 in the light exit direction L. In order to anchor the inner ring 112 in the outer ring 111, a rotation in the locking direction R would now be required, which will be discussed later.

7b shows the illustration according to 7a in a perspective view from above, the heat sink 119 not being shown here for reasons of clarity.

7c is a sectional view through the first embodiment 100 according to section line VII C-VII C in 7b . In contrast to this sectional view 7b the heat sink 119 is shown. This illustration shows how the outer ring 111 surrounds the LED circuit board 116 and how the LED circuit board 116 is covered by the second ring 112. In particular, this is possible 7c shows how the collar projection 157 surrounds the LED 117 and sits on the top side, i.e. the side of the circuit board 116 facing away from the heat sink 119. The LED circuit board 116 rests on the heat sink 119.

This creates full-surface contact between the underside of the LED circuit board 116 and the support surface of the heat sink 119, so that good heat transfer from the circuit board 116 to the heat sink 119 is guaranteed. You can also see the two connection channels 147 in the outer ring 111, which extend into the connection chambers 138 (not shown here) and serve to insert connection conductors (not shown) into the respective connection contact 113.

7d shows a sectional view through the first embodiment 100 and in particular through the connecting element 110 there along the section line VII D-VII D in 7b . The interaction of the centering surfaces 132 of the outer ring 111 and the centering webs 163 of the actuating handle 151 is shown schematically there. Both surfaces are designed to slope towards the center M of the outer ring 111 and towards the LED circuit board 116 or towards the heat sink 119, not shown, and slide off one another when the inner ring 112 is inserted into the outer ring 111. In this way it is ensured that the inner ring 112 experiences a substantially centered, coaxial alignment when it is inserted into the outer ring 111.

8a shows analogously to 7a a perspective view of the assembled first embodiment 100 of the invention, the heat sink 119 not being shown here for clarity purposes. In contrast to 8a the inner ring 112 was moved into its locking position in the locking direction R. The locking movement comes to an end when stop surfaces 153 of the stop elements 152 of the inner ring 112 abut the end stop surfaces 135 of the stop recesses 134 of the outer ring 111. Already 8a gives an idea of how the clamping pins 137 get under the tension spring arms 129 of the tension springs 115 due to the locking movement in the locking direction R. This alone allows the inner ring 112 to be mechanically fastened in the outer ring 111, so that no further holding parts are required on the side of the first ring 111 or no coupling part on the side of the second ring 112.

8b shows the illustration 8a in view from above. Here too it has just closed 8a the situation described is shown again.

8c is a sectional view through the first embodiment 100 according to section line VIII C-VIII C in Figure B. Here too, the heat sink 119 was not shown for clarity purposes. Based on this figure it can be seen - especially with a view to the left side of the drawing - that due to the rotation of the inner ring 112 in the locking direction R, the operating handles 151 are now arranged in the area of the receptacles 136 for the clamping pin on 137, whereas the clamping pin 137 is in Locking direction R, i.e. with regard to the drawing plane 8c backwards, has been moved further.

8d shows a sectional view of the first embodiment along the section line VIII D-VIII D in 8a . This illustration shows how the clamping pin 137 sits under the tension spring arm 129 of the tension spring 115 in the locked position of the inner ring 112. During the locking process, the anchor nose 158 carries out an overstroke movement. In this case, the anchor nose 158 slides over the anchor projection 162. In the locked position of the inner ring 112, the anchor nose 158 sits on the support surface 161 of the clamping pin 137 and thus presses the inner ring 112 against the LED circuit board 116. In this way, a contact pressure is created between the LED circuit board 116 and the support surface of the counter bearing 118 or the heat sink 119 are ensured, which optimizes the heat transfer from the LED circuit board 116 to the heat sink 119.

8e is a sectional view of the first embodiment 100 corresponding to section line VIII E-VIII E in 8b . Like the others 8a until 8d The heat sink was also not shown here for clarity purposes.

First you can also from 8e guess that the clamping pins 137 were moved under the tension spring arms 129 by rotation in the locking direction R. Here, the tension spring arms 129 were deflected upwards to build up a restoring tension and thus now exert a tension force against the light exit direction L in the direction of the heat sink 119, not shown, on the inner ring 112.

It has already been mentioned that a mechanical fixation of the inner ring 112 in the outer ring 111 is possible simply by sliding the clamping pins 137 under the tension spring arms 129. However, in the first embodiment 100 shown here, the invention takes a different approach. As already noted above in the description of the inner ring 112, the inner ring 112 has coupling parts in the form of locking webs 156.

The inner wall sections 133 form locking chambers 164 in an area downstream of the receptacle 136 in the locking direction R. These locking chambers 164 are open towards the center of the outer ring 111 or, in other words, form an indentation towards the outer circumference of the outer ring 111. Just as the clamping pins 137 are moved under the tension spring arms 129 in the manner of a bayonet lock when the inner ring 112 is moved in the locking direction R , the locking elements 155 of the inner ring 112 also dip into the locking chambers 164 in the manner of a bayonet lock.

As a result, in the first exemplary embodiment 100 of the invention shown here, a positive fixation of the inner ring 112 in the outer ring 111 has been chosen through the interaction of the locking elements 155 and the locking chambers 164.

In the 9 until 15d a second embodiment 200 of the invention is shown. As already mentioned at the beginning, a number of components are identical or have the same effect as corresponding components of the first embodiment 100. Accordingly, the reference numbers are chosen in the number range 200, but are then identical in the tens digits between the first embodiment 100 and the second embodiment 200.

9 first shows an exploded view of the second embodiment 200. The second embodiment 200 initially also includes a connection element 210, which includes a first ring/outer ring 211 and a second ring/inner ring 212. Part of the connection element 210 of the second embodiment 200 also includes connection contacts 213 and clamping elements 214. The first ring 211 also has a base plate 221, which in this exemplary embodiment not only forms the inner contour 123, but also has additional functions. This will be discussed later.

The connection element of the second embodiment 200, provided overall with the reference number 210, also serves to arrange a circuit board 216 with an LED 217 arranged thereon on a counter bearing 218, in particular a heat sink 219. In this embodiment 200 of the invention, too, the connection element 210 is fastened to the heat sink 219 by means of screw bolts 220. In addition, the exploded view shows 9 an alternative LED circuit board 216a with alternative LED 217a. In order to store these in the connection element 210, an adapter frame 265 is provided.

10a shows the outer ring 211 or first ring 211 in a perspective view of its top side O. The base plate 221 of the outer ring 211 is not shown.

The annular collar 226 of the outer ring 211 is also provided with receiving holes 226a, which are passed through by the screw bolts 220 (not shown) in order to fasten the outer ring 211 to the heat sink 219. Holding channels 266 formed by the annular collar 226 act with choke pins 267 (see for example 9 ) together, which are arranged on the base plate 221 and extend in the light exit direction L.

The annular collar 226 then forms diametrically opposed positioning grooves 268. These are designed as retractions towards the outer circumference in the otherwise essentially circular inner circumferential wall section 233 of the annular collar 226. The positioning grooves 268 are then open towards the top O of the annular collar 226, so that they are able to accommodate components in the opposite direction to the light exit direction L.

To arrange the clamping elements 214, which in the second exemplary embodiment are each designed as a detent spring 269, the annular collar 226 is provided with receiving grooves 270 that are open towards the top at diametrically opposite locations. These also form recesses of the inner peripheral wall section 233 that are recessed towards the outer circumference. Fixing slots 271 are arranged downstream of the receiving grooves 270 in the direction of the outer circumference.

10b shows the outer ring 211 10a , again viewed from above. This illustration shows in particular that here too the inner peripheral wall sections 233 of the annular collar 226 are essentially circular.

10c shows the outer ring 211 in a view from below. This representation shows in particular that the outer ring 211 also forms connection chambers 238 on its underside. The connection chambers 238 are - since the base plate 221 is not mounted - open downwards, i.e. towards the heat sink 219. In this way you can If the base plate 221 is not mounted, a connection contact 213 can be inserted into each connection chamber 238. In the illustrated embodiment 200, the connection chambers 238 are arranged adjacent to the positioning grooves 268 and are open to the adjacent positioning groove 268.

10c also shows that the fixing slots 271 penetrate the ring collar 226 downwards.

11a shows the illustration 10c , but here the connection contacts 213 are seated in the connection chambers 238 and the detent springs 269 are each inserted into a receiving groove 270.

11b is a sectional view through the outer ring 211 along section line XI B-XI B in 11a . You can see from this illustration that the locking springs 269 initially form a spring arm 272 with locking cams 273. The spring arm 272 is connected to a holding leg 275 via an intermediate piece 274. Overall, the detent spring 269 has an approximately U-shaped configuration in cross section.

The locking spring 269 is inserted with its holding leg 275 into the fixing slot 271, with the spring arm 272 with the locking cam 273 being inserted into the receiving groove 270. In the exemplary embodiment, the holding leg 275 has a notch 276, which engages behind a projection 277 located in the fixing slot 271 in order to ensure that the detent spring 269 is positively secured in the outer ring 211. Such a positive connection is not necessary. A friction connection would also be conceivable.

11c shows a sectional view through the outer ring 211 corresponding to the section line XI C-XI C in 11a . The cutting line is laid here in particular through the connection contact 213 in order to explain the structure of the connection contact 213.

The connection contact 213 is basically designed almost identically to the connection contact 113 of the first embodiment 100. Here too, the connection contact 213 is initially formed by a contact cage 240, which forms a contact rail 241 on its underside. The contact rail 241 is connected to a contact cover 244 via an upwardly extending contact side wall 243. The contact cover 244 carries a clamping leg 245, which projects into the contact input 246 and forms a clamping point for connecting a connecting conductor to be inserted. The contact input 246 can be reached via a connection channel 247, not shown. The contact rail 241 carries a contact extension 242 on its side facing away from the clamping leg 245, which extends into the positioning groove 268.

12a now shows a view from above of the assembled and assembled outer ring 211, with the heat sink 219 omitted for a better overview. The screw bolts 220 hold the outer ring 211 on the heat sink 219, not shown. The base plate 221 is attached to the outer ring 211 from below, with the choke pins 267 penetrating into the holding channels 266 and being anchored there in a frictional manner.

The base plate 221 has an opening 222, the inner contour 223 of which forms a rectangular, essentially square insert contour 224. The insertion contour 224 is interrupted by two opposing engagement contours 225, whereby here too the insertion contour 224 holds the circuit board 216, not shown here, parallel to its arrangement surface on the heat sink 219 and the engagement contours 225 serve to remove the circuit board 216 without tools or by means of a suitable tool to be able to remove the outer ring 211. It is worth mentioning that in this exemplary embodiment 200 the insertion contour 224 is provided with clamping cams 278. These protrude into breakthrough 222.

12a , also shows that the locking cams 273 of the locking spring 269 protrude into the annular space of the outer ring 211 and that the contact extensions 242 are seated in the positioning grooves 268.

Also 12b is a view from above of the assembled outer ring 211 and initially shows the same facts as that 12a . The adapter frame 265 is located in the opening 222 of the base plate 221, which accommodates the insert contour 224 of the base plate 221 in terms of shape, but reduces it in size: The adapter frame 265 also carries clamping cams 278a, which act analogously to the clamping cams 278 of the base plate 221.

13a shows the assembled outer ring 211 in a perspective view from above. 13b shows a view from above of the in 13a shown outer ring 211. The 13a and 13b essentially show the to 12a situation described. However, an LED circuit board 216, which carries an LED 217, is inserted in both figures. Contact fields 239 are arranged on the LED circuit board 216. This supplies the LED 217 with electricity, which is provided via the connection contacts 213 and led to the LED 217 via supply contacts (not shown).

In both figures it can be seen that the clamping cams 278 hold the LED circuit board 216 in the insertion contour 224 without play and in a friction-locking manner, It can also be seen here that the LED circuit board 216 can be released from the base plate 221 via the engagement contour 225.

In the 13c and 13d The adapter frame 265 is first inserted into the insertion contour 224 of the base plate 221. The adapter frame 265 in turn holds the alternative circuit board 216a, which is obviously significantly smaller than the circuit board 216 in the 13a and 13b . From the 13c and 13d will be compared with the 13a and 13b It is clear that the alternative circuit board 216a is also held in the same way as the circuit board 216, namely frictionally by clamping cams of the adapter frame 265.

It should be noted here, as already stated above, that the adapter frame 265 or the principle of adapting circuit boards 216, 216A of different sizes can also easily be used in the first embodiment 100. Likewise, for the second embodiment 200 described here, it should be noted that the base plate 221 does not necessarily have to be adapted to a circuit board 216. The base plate 221 of the second embodiment 200 can form a receiving contour for adapter frames 265, in which case only the adapter frames 265 correspond to one or more LED circuit boards 216, 216a.

The rectangular, in particular square, insertion contour of the LED circuit boards 216, 216a and 116 shown as an example in the first exemplary embodiment 100 is also due to this. Other circuit boards 216, 216a and 116 may require different insertion contours 224,124. These can easily be implemented via the base plate 221, 121 or suitable adapter frames 265.

14a shows the inner ring 212 or second ring 212 of the second embodiment 200. The inner ring 212 comprises an annular wall 248 with a central LED recess 249. A preferably circumferential annular wall section 250 falls from the top O of the inner ring 212 to the underside U and is funnel-like executed towards the center of the inner ring 212. In this way, the annular wall 248 avoids shading of the light emitted by the LED 217.

The ring wall 248 carries two diametrically opposed positioning pins 279 on its outer circumference. These protrude outwards, i.e. away from the center M, and serve to align the inner ring 212 in the correct position in the outer ring 211.

In the second embodiment 200, the inner ring 212 has diametrically opposed locking projections 280 arranged on the outer circumference of the annular wall 248. These combine the function of the clamping element and the locking element in one component.

14b shows the illustration 14a in view from above. From this figure it can be clearly seen that both the locking projections 280 and the positioning pins 279 protrude outwards from the annular wall 248.

14c is a sectional view along the section line

15a shows the second embodiment 200 in assembled form, although the heat sink 219 is not shown for reasons of clarity. The inner ring 212 is inserted into the outer ring 211. The LED 217 sits in the LED recess 249 of the second ring 212. The positioning pins 279 of the inner ring 212 sit in the positioning grooves 268 and thus ensure the correct positioning of the inner ring 212 in the outer ring 211. In exemplary embodiment 200, it is particularly important that the locking projections 280 of the inner ring 212 are aligned with the locking springs 269 of the outer ring 211.

15b shows the illustration 15a in view from above. The too 15a The statements made therefore also apply to 15b .

• Der Innenring 212 wird in Einsetzrichtung E, also entgegen der Lichtaustrittsrichtung L, folglich in Richtung LED-Leiterplatte 216 bzw. in Richtung des nicht dargestellten Kühlkörpers 219 in den Außenringes 211 eingesetzt. Hierbei verdrängen die Rastvorsprünge 280 die in ihrer Ruhelage in den Ringraum des Außenringes 211 hineinragenden Rastnocken 273 der Rastfedern 269. Die Rastnocken 273 führen hierbei eine durch die Rückstellelastizität der Rastfeder 269 bedingte Überhubbewegung über den Rastvorsprung 280 aus. In der Endlage des Innenringes 212 Außenringes 211 hintergreifen die Rastnocken 273 die Rastvorsprünge 280 und verhindern so eine Lösebewegung des Innenringes 212 in Richtung Lichtaustrittsrichtung L, also in vertikaler Richtung.

15c is a sectional view of the second embodiment 200 along section line XV C-XV C in 15b . Using this figure, the mechanical fastening of the inner ring 212 in the outer ring 211 can be explained as follows:

• The inner ring 212 is inserted into the outer ring 211 in the insertion direction E, i.e. opposite to the light exit direction L, consequently in the direction of the LED circuit board 216 or in the direction of the heat sink 219, not shown. Here, the locking projections 280 displace the locking cams 273 of the locking springs 269, which in their rest position protrude into the annular space of the outer ring 211. The locking cams 273 carry out an overstroke movement over the locking projection 280 caused by the restoring elasticity of the locking spring 269. In the end position of the inner ring 212 of the outer ring 211, the locking cams 273 engage behind the locking projections 280 and thus prevent a loosening movement of the inner ring 212 in the direction of the light exit direction L, i.e. in the vertical direction.

The pairing of inclined surfaces between the locking cams 273 and the associated locking projection 280 also transmit a clamping force acting in the insertion direction E from the locking springs 269 to the inner ring 212. In this way, the locking springs 269 serve as clamping elements and the locking projections 280 as clamping receiving elements around the inner ring 212 to brace against the circuit board 216 and this against the in 15c to press heat sink 219, not shown. In this way, optimal heat transfer from the LED circuit board 216 to the heat sink 219 is ensured.

It should also be noted that in embodiments 100 and 200 of the present description, annular or substantially annular outer rings 111 and 211 and inner rings 112 and 212 are shown. However, the circular shape is by no means necessary for the success of the invention. This also applies to the first exemplary embodiment 100, in which the inner ring 112 is rotated in the outer ring 111.

Screw bolts 120 and 220 have also been used in embodiments 100 and 200 to fasten the connecting element 110 and 210. Of course, it is conceivable to use other fastening means for fixing the respective connection element 110 or 210.

REFERENCE SYMBOL LIST

100

first embodiment

110

Connection element

111

first ring/outer ring

112

second ring/inner ring

113

Connection contacts

114

Clamping element

115

tension spring

116

Circuit board

117

LED

118

counter bearing

119

Heat sink

120

screw bolt

121

base plate

122

breakthrough

123

Inner contour

124

Insertion contour

125

engagement contour

126

Ring collar

126a

Recording holes

127

holding section

128

Passage channel

129

Tension spring arm

130

Support mandrel

131

Wall hook holder

132

centering surface

133

Interior wall section

134

stop recess

135

End stop surface

136

Holder for pins

137

clamping pin

138

Connection chamber

139

Contact field

140

contact cage

141

Contact rail

142

contact process

143

Contact side wall

144

Contact cover

145

clamping leg

146

Contact input

147

Connection channel

148

Ring wall

149

LED recess

150

ring wall section

151

Operating handle

152

stop element

153

stop surface

154

Tension receiving element

155

Locking element

156

bar bar

157

collar projection

158

anchor nose

159

Sloping surface

160

Support surface

161

Support surface

162

anchor projection

163

Centering bar

164

bolt chamber

R

bolt direction

L

Light emission direction

U

bottom

X

Conductor insertion direction

E

Direction of insertion

M

Focus

O

Top

200

second embodiment

210

Connection element

211

first ring/outer ring

212

second ring/inner ring

213

Connection contact

214

Clamping element

216

Circuit board

216a

alternative circuit board

217

LED

217a

alternative LED

218

counter bearing

219

Heat sink

220

screw bolt

221

base plate

222

breakthrough

223

Inner contour

224

Insertion contour

225

engagement contour

226

Ring collar

226a

receiving hole

233

Inner peripheral wall section

238

Connection chamber

239

Contact field

240

contact cage

241

Contact rail

242

contact process

243

Contact side wall

244

Contact cover

245

clamping leg

246

Contact input

247

Connection channel

248

Ring wall

249

LED recess

250

ring wall section

265

Adapter frame

266

holding channel

267

constrictor

268

positioning groove

269

Detent spring

270

receiving groove

271

fixing slot

272

Spring arm

273

Detent cams

274

Intermediate piece

275

holding leg

276

Notch

277

head Start

278

Clamping cams

278a

Clamping cams

279

Positioning pin

280

locking projection

281

sliding surface

282

locking surface

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102008005823 B4 [0002]

Claims (22)

Connection element (110, 210) for the electrical connection of an LED lamp, - the LED lamp having a circuit board (116, 216) which is provided with contact fields (139, 239) for the electrical supply of the LED (117, 217). is, - with a substantially annular frame which is intended to cover the circuit board (116, 216) and hold it mechanically on an arrangement surface of a counter bearing (118, 218), - with a contact arrangement which is mounted in the frame, and serve to supply the LED (117, 217) with electricity, characterized in that - the frame is divided into a first ring (111, 211) and a second ring (112, 212), - the first ring (111, 211) is intended to surround the circuit board (116, 216) and to hold it in a direction parallel to the arrangement surface of the counter bearing (118, 218), - the second ring (112, 212) covers the circuit board (116, 216) at least in some areas and in addition is provided to hold the circuit board (116, 216) in the vertical direction to the surface of the counter bearing (118, 218). Connecting element (110, 210). Claim 1 , characterized in that - the first ring (111, 211) has at least one holding part, - the second ring (112, 212) has at least a coupling part, - the holding part and the coupling part cooperate with one another to form the second ring (112, 212). to be attached to the first ring (111, 211). Connecting element (110, 210). Claim 1 or 2 , characterized in that one of the rings (111/211, 112/212) is intended to be fixed to the counter bearing (118, 218) with fastening means in order to mechanically anchor the circuit board (116, 216). Connecting element (110, 210). Claim 3 , characterized in that only one of the rings (111/211, 112/212), preferably the first ring (111, 211), is intended to be fixed to the counter bearing (118, 218) with fastening means in order to secure the circuit board ( 116, 216) to anchor mechanically, whereas the other ring, preferably the second ring (112, 212), is only attached to the first ring (111, 211) in order to mechanically anchor the circuit board (116, 216). Connection element (110, 210) according to one of Claims 1 until 3 , characterized in that the contact arrangement is formed by at least one supply contact, which is intended to be arranged on a contact field (139, 239) of the circuit board (116, 216) for electrical supply and for this purpose in particular forms a pressure contact, preferably a spring strut . Connection element (110, 210) according to one of Claims 1 until 3 , characterized in that the contact arrangement comprises at least one connection contact (113, 213), which serves for the solderless connection of a connection conductor for the electrical supply of the LED (117, 217) and in particular serves as a clamping contact for connecting a stripped connection conductor. Connecting element (110, 210). Claim 5 and 6 , characterized in that the contact arrangement is carried by only one of the rings (111/211, 112/212). Connecting element (110, 210). Claim 5 and 6 , characterized in that - the contact arrangement consisting of the connection contact (113, 213) and the supply contact is formed from two independent contact components, - one of the rings (111/211, 112/212), in particular the first ring (111, 211 ), carries the connection contact (113, 213), - the other ring, in particular the second ring (112, 212), carries the supply contact, - the connection contact (113, 213) and the supply contact establish an electrical connection with one another when the rings ( 111/211, 112/212) are united in a composite state forming the frame. Connection element (110, 210) according to one of the preceding claims, characterized in that an inner contour (123, 223) of the first ring (111, 211) has stop surfaces which are intended to cooperate with edge edges of the circuit board (116, 216). in order to hold the circuit board (116, 216) in a parallel direction to the arrangement surface of the counter bearing (118, 218), the first ring (111, 211) in particular at least partially receiving the outer contour of the circuit board (116, 216). Connection element (110, 210) according to one of the preceding claims, characterized in that the first ring (111, 211) and the second ring (112, 212) are mounted one inside the other, in particular mounted coaxially inside one another, the first ring (111, 211 ) is an outer ring and surrounds the second ring (112, 212) designed as an inner ring. Connection element (110). Claim 10 , characterized in that the inner ring (112) carries at least one locking element (156, 280) with which the inner ring (112, 212) is fastened within the outer ring (111, 211). Connecting element (110, 210). Claim 10 or 11 , characterized in that the outer ring (111, 211) has at least one tensioning element (114, 115, 269), in particular a tension spring (115), which is intended to move the inner ring (112, 212) in the direction of a connection element ( 110, 210) inserted LED circuit board (116, 216) or in the direction of the counter bearing (118, 218). Connection element (110, 210) according to one of Claims 10 until 12 , characterized in that the inner ring (112, 212) has at least one clamping receiving element (154, 137, 280), which cooperates with the clamping element (114, 115, 269) of the outer ring (111, 211) and the clamping forces on the inner ring ( 112, 212). Connection element (110) according to one of the Claims 10 until 13 , characterized in that the inner ring (112) can be inserted into the outer ring (111) in the insertion direction and can be fastened in the outer ring (111) by rotation in the manner of a bayonet lock. Connection element (110). Claim 13 and 14 , characterized in that the clamping receiving element (154, 137) comes into engagement with the clamping element (114, 115) due to the rotation. Connection element (110, 210) according to one of Claims 11 until 13 , characterized in that the clamping receiving element (154, 137, 280) and the locking element (155, 137, 262) are formed by the same component. Connection element (210). Claim 10 until 13 , characterized in that the outer ring (211) forms a holding element, in particular a locking projection (269), which cooperates with the locking element (280) of the inner ring (212) in order to hold the inner ring (212) in the outer ring (211). Connection element (210). Claim 17 , characterized in that the holding element and the clamping element (269) are formed by the same component. Connection element (210). Claim 16 and 18 , characterized in that the inner ring (212) is inserted into the outer ring (211) in the insertion direction (E) and is held in the outer ring (211) by a locking connection. Connection element (110, 210) according to one of Claims 1 until 19 , characterized in that the first ring (111, 211) is designed as a universal component which is able to accommodate a large number of different circuit boards (116, 216), whereas the second ring (112, 212) is designed as an individual component for a specific circuit board or a group of specific circuit boards with a common circuit board geometry or a common LED size is formed. Connecting element (110, 210). Claim 20 , characterized in that an adapter frame is provided which adapts the inner contour of the first ring (111, 211) to the outer contour of the circuit board (116, 216) in order to ensure a substantially play-free mounting of the circuit board (116, 216) in the first ring (111, 211). Connection element (210). Claim 21 , characterized in that the adapter frame is part of the second ring (212), so that this second ring (212) receives the circuit board (216).

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