Lighting component with LED board and connector

Abstract

Lighting component (10) with a support element that holds a light source in the form of a circuit board (11) equipped with LEDs (12), with contact fields (14) on the circuit board (11) that serve to connect a voltage-supplying plug-in connector (500), and with a plug-in connector (500) that comprises a contact carrier (501) that holds plug-in contacts (503) that establish an electrical connection with the contact fields (14) of the circuit board (11), with conductor insertion openings (516) in the contact carrier (501), via each of which a terminal point (506) of a plug-in contact (503) is accessible for a stripped end of a connecting conductor (510), with a plug-in direction (S) of the plug-in connector (500) along which the plug-in connector (500) can be plugged onto the circuit board (11) for the purpose of electrical connection, characterized in that - the luminaire component (10) has a mounting recess (13), - the connector (500) is held in the mounting recess (13) and firmly anchored in the luminaire component (10), - the connector (500) is arranged displaceably in the mounting recess (13) between a position in which the circuit board (11) is in electrical contact and a position in which it is not in contact.

Description

The invention relates to a lighting component with a support element which holds a lighting means in the form of a circuit board equipped with LEDs, with contact pads on the circuit board which serve for the connection of a voltage-supplying plug connector, and with a plug connector which comprises a contact carrier which holds plug contacts which enter into an electrical connection with the contact pads of the circuit board, with conductor insertion openings in the contact carrier, via which in each case a clamping point of a plug contact for a stripped end of a connection conductor is accessible, with a plug-in direction of the plug connector, along which the plug connector can be plugged onto the circuit board for the purpose of electrical connection.From the prior art which cannot be covered by reference, it is known to provide a luminaire or a component thereof with a lighting means in the form of LEDs arranged on a printed circuit board. In order to supply the light fixture with electricity, these printed circuit boards have exposed conductor tracks or contact surfaces which are to be contacted by mating contacts of a plug connector. These contact surfaces or free conductor tracks are located close to the edge, so that the plug connector can be pushed directly onto the circuit board and a mating plug piece, such as a pin trough on the circuit board, is superfluous.DE 11 2006 003 111 T5 discloses a printed circuit board which is provided with LEDs in order to serve as a lighting means in a luminaire. The circuit board has a terminal region on the edge with exposed conductor tracks, on which a plug connector is placed. The board may be provided with additional plates having a reflector function, a heat conducting function.DE 10 2012 003 520 B4 discloses a luminaire component which serves to support a printed circuit board provided with LEDs. The luminaire component has a pressure contact mounted in a housing, which serves for the electrical connection of the printed circuit board. A fastener holds the housing on the lamp component and has struts which bias the housing with its pressing contact against the lamp component. In this way, the printed circuit board lying between the housing and the lamp component is pressed against the lamp component in order to optimize the heat dissipation.In luminaires, despite the long durability of the LED lighting means, exchangeability of the LED circuit boards is now required. At the same time, the lighting industry produces lights which, with an identical light housing, are provided with LED lighting means of different performance depending on the usage-specific application purpose. Since the LED circuit boards for the luminaire industry are generally a externally produced retail part, high flexibility is required with regard to the use-specific luminaire manufacture, that is to say the provision of the luminaire with a use-specific LED circuit board.It is therefore an object of the invention to provide a luminaire component in which the circuit board mounting is considerably improved.The object of the invention is achieved by a luminaire component having the features of claim 1, in particular its characterizing features, according to which the luminaire component has a mounting recess, the plug connector is held in the mounting recess and firmly anchored in the luminaire component, and the plug connector is arranged in the mounting recess so as to be displaceable between a position electrically contacting the circuit board and a contactless position.The luminaire component according to the invention solves the problems of the prior art with its characteristic features and has further advantages. First, the LED board of a light fixture in operation can be easily separated from the supply voltage by moving the plug connector from its contacting position into its contactless position. A simple exchange of the lighting means is thus ensured.In addition, lamps with the lamp component according to the invention can be pre-mounted and also temporarily stored as much as possible in a simple manner, so that the use-specific loading with LED circuit boards takes place in doubt only immediately before the lamp is delivered. This increases the flexibility on the part of the luminaire manufacturer to be able to react to specific customer requirements.Finally, the plug connector is firmly anchored in the luminaire component and in this way is captive and fixed in the right position both during a change of illuminant and during assembly. In particular in the case of lamps having a plurality of LED lighting means, which are possibly actuated in a phase-dependent manner, it is impossible for the plug connector and the associated lighting means to be interchanged.The anchoring of the plug connector in the mounting recess also contributes to a cleared-up interior space of a luminaire with a luminaire component according to the invention, so that shading influencing light by the plug connector according to the invention is reliably avoided.This is particularly contributed by the fact that, in a particular embodiment, the plug connector seated in the mounting recess can be displaced along a movement plane only between the contacting and the contactless position, but is fixed in the mounting recess in deviating movement directions.It is also provided that the plug connector and the mating plug region of the circuit board have coding means that correspond to one another, so that only plug connectors coded in a manner matching the circuit board can be placed on the plug region.It is also provided that the plug connector carries latching means which enter into a connection with mating latching means of the circuit board in the contacting plug connector position and thus hold the plug connector on the circuit board in a vibration-proof manner.Specifically, it is provided that the plug connector forms at least one support which rests on an upper side of the luminaire component and that the plug connector forms at least one counter bearing which rests on an underside of the luminaire component and that the support and the counter bearing accommodate the luminaire component between them.It is provided here that the counter bearing and / or the support are prestressed against the respective lower or upper side of the luminaire component, so that the plug connector is initially held in the mounting recess without any movement play. In addition, the prestress produces a frictional engagement between the plug connector and the lamp component, which frictional engagement has to be overcome when the plug connector is displaced between the contacting and the contactless position. In this way, it is ensured that the plug connector remains in its respective position, either the contacting or the contactless position, even when the position of the lamp component changes.It is provided that the plug connector is held in the mounting recess by means of latching elements.Such a mounting of the plug connector in the mounting recess makes the insertion of the plug connector in the mounting recess particularly simple. This need only be inserted into the mounting recess until latching and is then fixed there.Particularly preferred is an embodiment in which at least one latching element as a counter bearing abuts the underside of the luminaire component and thus generates a prestress which produces the frictional connection between plug connector and luminaire component. This embodiment combines the simple mounting of the plug connector by means of latching elements in the mounting recess with the bearing elements (support and counter bearing), which leads to a structural simplification.If it is then still ensured that the latching element serving as counter bearing has a U-shaped, spring reset-elastic arc, from the free end of which the counter bearing bearing bearing against the underside of the luminaire component is formed, the latching element will also produce the friction fit already mentioned, which is capable of holding the plug connector in the contacting or the contactless position.The plug connector of the lamp component is then characterized in that the plug connector forms a plug receptacle for the circuit board, in which receptacle the circuit board is received in the contacted state.It is furthermore provided that the circuit board is arranged on the luminaire component so as to overlap the mounting recess by at least the plug depth dimension of the plug receptacle of the plug connector.It is furthermore provided that the plug contacts have a clamping cage with two mutually opposite clamping points, in particular if each clamping point of a clamping cage is accessible through a respective conductor insertion opening formed by the contact carrier.The essential advantage of this particular embodiment is that the plug connector can be fitted with electrical connection conductors from two different sides. Thus, the plug connector can be used in the luminaire component independently of its mounting position, which extends its possible uses.For this purpose, it is provided in particular that the first clamping point of each clamping cage is accessible from the upper side of the luminaire component and the second clamping point of each clamping cage is accessible from the lower side of the luminaire component.Further advantages of the invention and a better understanding thereof will become apparent from the exemplary embodiment described below.The following are shown: FIG. 1 shows a view of the luminaire component according to the invention on its upper side, FIG. 2 shows the view according to FIG. 1 without plug connector, FIG. 2 ashows an enlarged detail of the luminaire component according to FIG. 2 in a view from below, FIG. 3 shows an enlarged detail of the lamp component according to FIG. 1 with plug connector in the contacting position, FIG. 4 shows the illustration according to FIG. 3 with plug connectors in a contactless position, FIG. 5 is a sectional view along the line A--A in FIG. 3, FIG. 5a is a sectional view along the line B--B in FIG. 3, FIG. 6 shows the plug connector of the luminaire component according to the invention in a view from above, FIG. 7 shows the plug connector according to FIG. 6 in a view of its plug receptacle counter to the plug-in direction, FIG. 8 is a view of the plug connector according to FIG. 6 in a view of its rear side opposite the plug receptacle, FIG. 9 is a bottom view of the connector of FIG. 6, FIG. 10 is an exploded perspective view of the connector of FIG. 6.In the figures, a luminaire component 10 according to the invention is provided overall with the reference sign 10.FIG. 1 shows the luminaire component 10 with an LED board 11 placed thereon, which with its LEDs 12 serves as a lighting means of a luminaire not shown in any more detail.The luminaire component 10 has two mounting recesses 13, wherein in principle one of the mounting recesses 13 is sufficient to achieve the purpose of the invention. In a preferred embodiment, the LED board 11 is fixed to the luminaire component 10 via fastening means, not shown. The electrical supply of the LED board 11 is effected via a plug connector 500 which is seated in the mounting recess 13 and will be described in more detail below.As is already evident from FIG. 1, the plug connector 500 is placed on an edge section of the LED board 11 in order to electrically contact contact pads 14 located there and not visible in FIG. 1.FIG. 2 substantially corresponds to the illustration according to FIG. 1. Here too, a view of the luminaire component 10 from above, that is to say on the upper side thereof, is shown. In this view, however, the plug connectors 500 have been omitted, so that the edge regions of the LED board 11 covered by the plug connectors 500 in the contacting position are visible.FIG. 2 shows that in the edge regions of the circuit board 11 that are covered by the plug connector 500 in the contacting state, contact fields 14 are initially formed, which serve as counter contacts for separately described plug contacts 503 of the plug connector. Cut-outs directed from the edge region in the direction of the longitudinal central axis L of the printed circuit board 11 serve as coding grooves 15 which cooperate with coding walls 514 of the plug connector 500 which will be described below in order to ensure a polarity-reversal-proof plug connection.Latching recesses 16 serve for anchoring the plug connector 500 to the LED board 11 in the contacting plug connector position.In FIG. 2 a, the rear side of the luminaire component 10 is shown in an enlarged detail. From below, the observer sees the arrangement of the luminaire component 10, the LED board 11 and the mounting recess 13. This part corresponds at least to the plug depth of the plug receptacle 518 of the plug connector 500 to be described later or at least to the depth of insertion of the LED board 11 into the plug connector 500. Also visible here are the latching recesses 16 arranged on the edge side of the circuit board and the coding grooves 15 introduced from the circuit board edge in the direction of the circuit board longitudinal central axis.When considering FIGS. 3 and 4 in comparison, it is evident that the plug connector 500 seated in the mounting recess 13 assumes two different positions or positions. In FIG. 3, the plug connector covers an edge region of the circuit board 11 with its plug receptacle 518, which will be described below. In this contacting position, there is an electrical contact to the contact pads 14 of the circuit board 11, so that an electrical supply of the LED circuit board 11 is ensured. The region of the mounting recess 13 facing away from the circuit board 11, i.e. behind the plug connector 500, is free.FIG. 4 shows the plug connector 500 in its contactless position. For this purpose, the plug connector 500 has been displaced counter to the plug-in direction S of the plug connector 500 and is now located in FIG. 3 as a freely illustrated rear region of the mounting recess 13. By displacing the plug connector 500 counter to the plug-in direction S in the mounting recess, the plug connector 500 reaches its contactless position, in which the overlap with the circuit board 11, i.e. also the electrical contacting, is canceled and the edge region of the circuit board 11 is exposed.FIG. 10 shows the basic structure of the plug connector 500 in an exploded view.The plug connector 500 initially comprises a contact carrier 501 which has contact chambers 502 into which plug contacts 503 are inserted. Each plug contact 503 has contact arms 504, wherein in each case two contact arms 504 of a plug contact 503 are assigned to one another in pairs and form between them a receiving gap, not designated in more detail, into which the edge region of the circuit board 11 dips deep enough until contact cups, not designated in more detail, of the contact arms 504 rest on the contact fields 14 of the circuit board 11.Each plug contact 503 also has a clamping cage 505. This clamping cage 505, in a departure from the usual configuration of plug contacts 503, forms two mutually opposite clamping points 506, in that in each case one clamping arm per clamping point 506 cooperates with a counter bearing, in this case the clamping cage wall.FIG. 10 then shows a first cover 507, with which the contact chambers 502 can be closed in order to hold the plug contacts 503 in the contact carrier 501. This first cover 507 has pin openings 508 which cooperate with clamping pins 509 of the contact carrier 501. The clamping pins 509 are arranged on the contact carrier 501 and enter the pin openings 508 when the cover 507 is placed on the contact carrier 501. They hold the first cover 507 there either by a frictional connection. Alternatively, it is possible to hold the first cover 507 on the contact carrier 501 by means of conventional welding techniques.An alternatively attached second cover 515 is also shown in FIG. 10. This has two conductor insertion openings 516, via which connection conductors 510 are introduced into the plug connector 500 in order to be held in the clamping points 506. The second cover 515 is fixed to the contact carrier 501 in the same manner as the first cover 507.The contact arms 504 of the plug contacts 503 emerge from the contact chambers 502 in the plug-in direction S and are arranged between a contact carrier-side first plug projection 511 and a second, cover-side plug projection 512. The plug projections 511 and 512 emerge from the contact carrier 501 in the plug-in direction S, and the latching arms 513 emerge from the contact carrier 501 in the plug-in direction S and are assigned to one another in pairs in order to hold the plug connector, engaging in the latching recesses 16 of the LED board 11, on the LED board 11.In addition, the first plug projection 511 has coding walls 514 which, in order to avoid misplugging, cooperate with coding grooves 15 of the LED board 11 in a contacting position.FIG. 6 shows the plug connector 500 in a view from above. It can be clearly seen from this view again that both the plug projections 511 and 512 and the latching arms 513 protrude in the same direction in the plug-in direction S from the contact carrier 501 or from the second cover 515 shown here. It is also shown how the connection conductors 510 enter the interior of the plug connector 500 through the conductor insertion openings 516 of the second cover 515, namely into the contact chambers 502 and the clamping cages 505 of the plug contacts 503 seated therein.FIG. 7 shows a view according to view arrow VII in FIG. 6, i.e. a view counter to the plug-in direction S. This is a view of the plug connector front, which can be seen first that a gap 517 forms the plug receptacle 518 for the circuit board 11 between the plug projections 511 and 512. It can also be seen from FIG. 7 that the contact carrier 501 carries latching elements 519 in the form of latching brackets 520 on its underside to the right and left of the plug-in receptacle. These latching brackets 520 are approximately U-shaped, wherein the free end of the respective latching bracket 520 extends in the direction of the connector upper side. Opposite the free end of each latching bracket 520, there is a support 521 of the contact carrier 501. Between the free detent bracket end and the support 521, a board receiving gap 522 is formed.FIG. 8 shows the plug connector 500 in a view of its rear side facing away from the plug receptacle 518, that is to say a view in the plug-in direction S according to view arrow VIII in FIG. 6 Moreover, FIG. 8 again shows the support 521, which together with the free end of the latching bracket 520 forms the board receiving gap 522.FIG. 9 shows a view of the underside of the plug connector 500 carrying the latching brackets 520. As can already be seen from the remaining representations of the plug connector 500, it becomes clear in particular from FIG. 9 that the underside of the contact carrier 501 likewise has conductor insertion openings 516, through which connection conductors 510 can be fed to the clamping points 506 of the clamping cages 505 of the respective plug contact 503.As can thus also be seen in particular in conjunction with FIGS. 7 and 8, the clamping cages 505, which are accessible from above and below, make it possible with their two in each case to feed a connecting conductor 510 to the plug connector 500 both from below and from above at the opposite clamping points 506, when the second cover 515 having conductor insertion openings 516 is used to close the contact chambers 502.This fact is advantageous in two respects. On the one hand, one and the same plug connector 500 can be used for luminaire components 10 which require either a conductor connection from below or a conductor connection from above. In addition, such a plug connector 500 with clamping points 506 accessible from two opposite directions can also be used to easily realize through wiring for lamps connected in series in a series manner using the lamp component 10 according to the invention.With reference to FIG. 4, which is a sectional view along section line A-A in FIG. 3, the anchoring of the plug connector 500 in the luminaire component 10 can be described. The plug connector seated in the mounting recess 13 rests with its supports 521, which are located on both sides of the contact chambers (not designated here) 502, on the upper side of the luminaire component. The U-shaped or bow-like latching brackets 520 arranged on the underside of the contact carrier 501 engage under the luminaire component from below with their free end and are prestressed against the luminaire component. In this manner, the connector 500 is held in the mounting recess 13. The prestress of the latching brackets 520 additionally leads to a frictional engagement between the plug connector 500 and the lamp component 10, which is to be overcome when the plug connector 500 is moved from the contacting position into the contactless position or when the movement is reversed in the plug-in direction S. Consequently, the plug connector 500 is held in the mounting recess 13 in a positionally stable manner.FIG. 5 ais a sectional view through the luminaire component 10 along the section line B-B in FIG. 3 ; it can be seen from this how the plug connector 500 receives the LED board 11 with an edge region in its plug receptacle 518 in its contacting position. In this case, the board edge containing the contact fields 14 is arranged between the contact arms 504, with the result that the same enter into an electrical connection with the board.List of reference characters10 Luminaire component 11 LED board 12 LED 13 mounting recess 14 contact field 15 coding groove 16 latching recess 500 plug connector 501 contact carrier 502 contact chamber 503 plug contact 504 contact arm 505 clamping cage 506 clamping point 507 first cover 508 pin opening 509 clamping pin 510 connection conductor 511 first plug protrusion 512 second plug protrusion 513 latching arm 514 coding wall 515 second cover 516 conductor plug opening 517 gap 518 plug receptacle 519 latching element 520 latching bracket 521 support 522 board receptacle gap L longitudinal central axis S plug direction

Claims

Luminaire component (10) having a supporting element which holds a lighting means in the form of a board (11) equipped with LEDs (12), having contact pads (14) on the board (11), which contact pads serve for the connection of a voltage-supplying plug connector (500), and having a plug connector (500) which comprises a contact carrier (501) which holds plug contacts (503) which enter into an electrical connection with the contact pads (14) of the board (11), having conductor insertion openings (516) in the contact carrier (501), via which in each case a clamping point (506) of a plug contact (503) for a stripped end of a connection conductor (510) is accessible, having a plug-in direction (S) of the plug connector (500), Connector (500) along which the connector (500) can be plugged onto the printed circuit board (11) for the purpose of electrical connection, characterized in that - the lamp component (10) has a mounting recess (13), - the connector (500) is held in the mounting recess (13) and firmly anchored in the lamp component (10), - the connector (500) is arranged displaceably in the mounting recess (13) between a position electrically contacting the printed circuit board (11) and a contactless position.Lamp component (10) according to Claim 1, characterized in that the plug connector (500) which is seated in the mounting recess (13) can be displaced along a movement plane only between the contacting and the contactless position, but is fixed in the mounting recess (13) in deviating movement directions.The luminaire component (10) according to claim 1 or 2, characterized in that the plug connector (500) forms at least one support (521), which rests on an upper side of the luminaire component (10), and that the plug connector (500) forms at least one counter bearing, which rests on an underside of the luminaire component (10), and that the support (521) and the counter bearing accommodate the luminaire component (10) between them.Lamp component (10) according to one of the preceding claims, characterized in that the plug connector (500) is held in the mounting recess (13) by means of latching elements (519).Luminaire component (10) according to claim 3 and 4, characterised in that at least one latching element (519) as counter bearing abuts on the underside of the luminaire component (10).Luminaire component (10) according to claim 5, characterised in that the latching element (519) serving as counter bearing has a U-shaped, spring reset elastic arc, from the free end of which the counter bearing bearing bearing against the underside of the luminaire component (10) is formed.Lamp component (10) according to one of the preceding claims, characterized in that the plug connector (500) forms a plug receptacle for the circuit board (11), in which receptacle the circuit board (11) is received in the contacted state.Lamp component (10) according to Claim 7, characterized in that the printed circuit board (11) is arranged on the lamp component (10) so as to overlap the mounting recess (13) by at least the extent of the plug depth of the plug receptacle of the plug connector (500).Luminaire component (10) according to one of the preceding claims, characterized in that the plug contact (503) has a clamping cage (505) with two mutually opposite clamping points (506).Luminaire component (10) according to claim 9, characterised in that each clamping point (506) of a clamping cage (505) is accessible through a respective conductor insertion opening (516) formed by the contact carrier (501).The luminaire component (10) according to claim 10, characterized in that the first clamping point (506) of each clamping cage (505) is accessible from the top side of the luminaire component (10) and the second clamping point (506) of each clamping cage (505) is accessible from the bottom side of the luminaire component (10).

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