Patent Grant
10989383
The field of the present invention is that of lighting and/or signalling devices for motor vehicles, and the present invention relates more particularly to lighting and/or signalling devices which use at least one surface light source.
The aesthetic and regulatory developments, and the changes in constraints of weight and size of elements used in a motor vehicle, mean that there is growing interest in producing lighting and/or signalling devices which combine extended aesthetic possibilities with illumination power, a long service life, compactness, flexibility and ease of implementation. In this sense, the use of light sources comprising one or more surface light sources, and in particular one or more organic light-emitting diodes, is a research and development path which opens up great possibilities in terms of optical performance and design flexibility.
An organic light-emitting diode or OLED conventionally comprises a lighting module formed from two electrodes, between which is placed an assembly of organic layers which emit light under the effect of a voltage applied across the two electrodes. The assembly formed by the electrodes and the organic layers is generally sandwiched between two substrates of a translucent material. On a practical level, an OLED source for a lighting and/or signalling system for a motor vehicle is conventionally composed of an emitter part, formed by the organic layers, the electrodes and above-mentioned substrates, and a base on which the emitter part is mounted by means of an appropriate adhesive, the assembly being connected to an electrical power supply and control device by suitable connection means.
Surface light sources, and in particular OLED sources, are increasingly used in the motor vehicle sector, both for lighting or signalling of the vehicle itself and for aesthetic reasons, in particular for aspects of the visual and light signature of the vehicle. In this context, the present invention is used preferably but not exclusively for the lamps intended for the rear signalling of motor vehicles.
In the known fashion, such a lamp comprises a housing closed by a lens, the housing and the closing lens together delimiting a volume receiving one or more light sources. Such a light also comprises a light source support which separates the receiving volume into an optical volume, which is visible from the outside of the vehicle and contains the emitter parts of the light sources, and a technical volume, which contains the elements connecting the light sources to an electrical power supply and control device of the sources. Such a support is conventionally produced by injection-moulding of a material selected for its mechanical and thermal properties. In the case of a lamp using surface light sources, these must be fixed to the support.
The technical problem to which the present invention proposes a solution is that of fixing the surface light sources to such a support. In fact, the current fixing mode used imposes specific forms for the support, production of which by injection-moulding is complex and costly, in particular since this fixing mode requires the use of moulds with compartments. Also, these compartments leave moulding marks on the support, which moulding marks may cause defects in the visual quality. The known fixing method creates, amongst others, design constraints on the surface light sources, limiting the aesthetic possibilities and preventing the achievement of all advantages of the technology of these surface light sources. Finally, with the fixing method currently used, the surface light sources are received between two substantially parallel fins which protrude from the surface of the support; it is evident that, on installation of the surface light sources, any movements thereof relative to the support are limited solely by these fins, i.e. in a single spatial direction. Also, it is not reliably ensured that the surface light sources are inserted as far as the stop. As a result, there may be slight discrepancies and/or an absence of reproducibility in the installation of the surface light sources. When these emit light, this may generate visual discontinuities which are a source of quality rejection.
The aim of the present invention is to remedy these drawbacks by proposing a simple and reproducible fixing method, implementation of which is compatible with simple and low-cost production of the support which is intended to carry the surface light sources in a lighting and/or signalling lamp, for example a rear lamp, of a motor vehicle.
To this end, the object of the invention is a lighting device comprising at least one surface light source and a support for this, wherein the surface light source comprises a fixing element which extends in a longitudinal direction and has a T-shaped cross-section, and wherein the support comprises a receiving part for the fixing element, a cross-section through the receiving part having a shape complementary to the cross-section of the fixing element, the lighting device comprising at least one stop of the fixing element against the receiving part, the stop being arranged in the extension of the fixing element in the longitudinal direction.
The support for the lighting device is for example a mask intended to conceal a technical volume of a rear lamp of a motor vehicle.
The term “surface light source” means a source with a light-emitting surface, in which the dimensions of the light-emitting surface are substantially greater than the height of the surface source, for example the area of which is greater than or equal to 1 cm2, or greater than 10 cm2.
Advantageously, the surface light source comprises an emitter part which takes the general form of a plate, one face of which emits light. In arbitrary fashion, the term “upper” is used below to describe the emitter face of the surface light source.
Advantageously, the fixing element extends from a base attached via a suitable adhesive to a face of the emitter part of the surface light source opposite said upper face.
According to a characteristic of the invention, the fixing element comprises an upright capped with a head, the upright extending from a lower face of the surface light source, the upright and the head together with this lower face delimiting at least one engagement groove for the receiving part of the support.
Advantageously, the head terminates the fixing element since no material is provided which extends from the head in a direction opposite this, oriented towards the surface light source. In other words, there is no additional upright which emerges from the head, other than the upright constituting the fixing element.
It is understood here that the term “lower face” of the surface light source means the lower face of the base as defined above, i.e. the face of the base opposite the face via which the latter is attached to the emitter part of the surface light source.
The upright of the fixing element advantageously takes the form of a bar which extends from the lower face of the surface light source in a first direction called the height of the fixing element, substantially perpendicularly to this lower face. This upright also extends along the lower face of the surface light source in a second direction or main extension direction, also referred to below as the longitudinal direction of the surface light source. The dimension of the upright of the fixing element in this longitudinal direction is referred to below as the length of the fixing element.
In an advantageous but not exclusive variant embodiment, the upright of the fixing element substantially takes the form of a rectangular parallelepiped: its cross-section, in a cross-section plane perpendicular to said longitudinal direction, generally has the form of a rectangle.
The head of the fixing element extends substantially parallel to the lower face of the surface light source from a lower edge of the upright of the fixing element, opposite the edge via which this upright is attached to the lower face of the surface light source. Advantageously, the head of the fixing element extends substantially over the entire length of the fixing element in the previously defined longitudinal direction.
Advantageously, the head of the fixing element extends substantially symmetrically on either side of the upright of the fixing element, in a transverse direction perpendicular to said longitudinal direction and to the previously defined height. The dimension of the head of the fixing element in this transverse direction is defined as the width of this head. It is noted that a ratio between the width of the head and a width of the upright measured along a same line is greater than at least three. The head is significantly wider than the upright so as to form usable grooves.
As a result, the cross-section of the assembly formed by the upright and the head of the fixing element, in a cross-section plane perpendicular to said longitudinal direction, is generally T-shaped, the vertical branch of which is formed by the cross-section of the upright of the fixing element and the horizontal branch of which is formed by the cross-section of the head of the fixing element.
As a result of this particular configuration of the upright and the head of the fixing element, an engagement groove is formed by the lower face of the surface light source together with the vertical branch of said T-shape as implemented by the upright of the fixing element, and with each part of the horizontal branch of this T-shape implemented by the two parts of the head of the fixing element which extend transversely on either side of the upright thereof. The fixing element, together with the lower face of the surface light source, thus forms two engagement grooves situated on either side of the upright of the fixing element in the previously defined transverse direction.
According to another characteristic of the invention, the stop comprises at least one blocking wall, and advantageously two blocking walls, which extends or extend substantially perpendicularly to the longitudinal direction of the fixing element, in particular in a plane substantially perpendicular to the previously defined longitudinal direction. This blocking wall extends from the lower face of the surface light source to an end of the upright of the fixing element in the longitudinal direction. Advantageously, the dimension of the blocking wall in said transverse direction is at least equal to the dimension of the head of the fixing element in the same transverse direction. The blocking wall, at the end of the upright of the fixing element to which is attached, thus forms a closure of the previously defined engagement grooves.
The upright, head and blocking wall form the fixing element of the surface light source, configured to cooperate by engagement with the receiving part of the support of the surface light source.
The receiving part of the support of the lighting device according to the invention has one or more of the following characteristics, taken separately or in combination:
The surface light source is fixed to its support in the following manner:
As a result of the above, when the surface light source is fixed on its support, the longitudinal direction of its fixing element and the main extension direction of the receiving part of the support are congruent. Similarly, the elevation direction of the receiving part and the height direction of the fixing element are congruent, and the same applies to the width of the fixing element and the transverse direction of the engagement portion.
Thus the previously defined height, width and length of the fixing element, when the surface light source is received in the receiving cavity, respectively become the height, width and length of the lighting device. It is however noted that these denominations in no way prejudice the final orientation of the lighting device according to the invention in a lighting and/or signalling lamp of a motor vehicle.
When the surface light source is assembled with its support to form the lighting device according to the invention, it is blocked in several spatial directions:
Such blocking guarantees the reproducible assembly of the surface light source on its support, thus fulfilling one of the aims of the invention.
Also, the shapes of the receiving part arranged on the support of the surface light source allow this support to be produced by a simple injection-moulding operation, which in particular does not require the use of compartment moulds: the production method of such a support is therefore simplified and the cost reduced, thus fulfilling another of the aims of the invention.
In another aspect of the invention which further facilitates assembly of the surface light source on its support, the invention provides a pre-assembly hook for the surface light source on the support. Such a pre-assembly hook comprises a lug protruding from a side wall of the engagement portion and a flexible tab arranged on the fixing element. According to a variant embodiment, the pre-assembly hook extends inside the receiving cavity for the fixing element in the receiving part of the support. This pre-assembly hook comprises the lug which advantageously protrudes from one of the side walls of the engagement portion inside said receiving cavity.
The pre-assembly hook also comprises, arranged at the front end of the upright of the fixing element, the flexible tab configured to cooperate with said lug. As a reminder, the front end of the upright of the fixing element is the end of the upright which lies opposite, in the longitudinal direction of the fixing element, the end of said upright comprising the blocking wall. Advantageously, the flexible tab is configured such that, in the longitudinal sliding movement of the fixing element inside the receiving cavity, it deforms when it reaches said lug and then, once the longitudinal sliding movement has brought it past this lug, it comes to rest against this, preventing any reverse sliding movement. In other words, the pre-assembly hook formed by the lug and the flexible tab achieves a blocking of the surface light source in the receiving part in the longitudinal direction of the lighting device according to the invention, in the direction opposite the insertion direction of the surface light source with its support. This allows pre-assembly to be achieved, which prevents the surface light source(s) from undesirably leaving the support during handling of the latter.
Preferably, the surface light source has a light emission surface area greater than 1 cm2, or greater than 10 cm2. Preferably, the surface light source is an organic light-emitting diode.
The invention also extends to a lighting and/or signalling system for motor vehicle comprising at least one lighting device having one or more of the characteristics just described, taken separately or in combination.
Advantageously, such a lighting system comprises a plurality of lighting devices as just described, all fixed on a support common to the plurality of surface light sources. Advantageously, the surface light sources are arranged staggered on this support: such an arrangement in particular allows an increase in the luminous surface area created by the sources inside the lighting and/or signalling lamp.
According to this aspect of the invention, such a lighting and/or signalling system comprises a housing closed by a lens, the housing and the lens together delimiting a receiving volume which accommodates a plurality of lighting devices according to the invention, the support then forming a mask arranged in the receiving volume to divide this into a first sub-volume containing the lighting devices according to the invention, and a second sub-volume, called the technical volume or zone, containing the connection elements of each lighting device.
More particularly, the first sub-volume is visible from outside the vehicle, while the technical volume is not.
According to the invention, such a lighting and/or signalling system comprises a monobloc piece configured to block at least two surface light sources on the support, for example in a direction opposite the insertion direction of the surface light sources in the receiving part. This monobloc piece secures the mounting of the surface light sources on the support, once they are installed thereon by means of the fixing elements and the receiving parts previously described. The monobloc piece is thus common to several lighting devices according to the invention.
Further characteristics, details and advantages of the invention will arise more clearly from reading the description, given below for information, in relation to the attached drawings in which:
It should first be noted that although the figures present the invention in detail for its implementation, these figures may naturally serve to better define the invention where applicable.
Also, to simplify reading, the organic light-emitting diodes are designated below under the name OLED diodes.
With reference to the various figures, and as described above, a lighting device according to the invention comprises at least one OLED diode 100 and a support 200 for fixing this. The OLED diode 100 and the support 200 are mechanically connected by a fixing element 1 arranged on the OLED diode 100, and by a receiving part 2 for the fixing element 1 arranged on the support 200.
With reference in particular to
The emitter part 110 of the OLED diode 100, formed from the assembly of organic layers, electrodes and substrates, according to the embodiment shown in
As
According to the variant embodiment illustrated more particularly by the figures, the upright 10 of the fixing element 1 takes the general form of a rectangular parallelepiped comprising two side faces, respectively 10a, 10b, substantially parallel to each other and perpendicular to the lower face 101 of the OLED diode 100. More precisely, the side faces 10a, 10b of the upright 10 extend in a plane substantially parallel to the height Z and to the longitudinal direction X defined above. As has just been defined, the upright 10 of the fixing element 1 in particular has a longitudinal plane of symmetry P1 defined by said longitudinal direction X and parallel to the side faces 10a, 10b, the longitudinal plane of symmetry P1 being a central longitudinal plane of the upright 10 in the transverse direction Y or width, perpendicular to the longitudinal direction X and the height Z defined above. The upright 10 also comprises, in the longitudinal direction X, an end wall 10d called the front end, and an end wall 10e called the rear end. The front end 10d and the rear end 10e are substantially perpendicular to the side walls 10a, 10b. With reference to
The fixing element 1 also comprises a head 11 which extends substantially parallel to the lower face 101 of the OLED diode 100 on either side of the upright 10 in the width Y. It is noted that the fixing element 1 is advantageously formed as a single piece from the same material as the base 120. According to the embodiment illustrated more particularly on the figures, the head 11 has the form of a substantially parallelepipedic plate arranged symmetrically relative to the longitudinal plane P1.
The result of the respective configuration of the upright 10 and head 11 is that these two elements, in cross-section along a cross-section plane P2 perpendicular to the previously defined longitudinal direction X, form an inverted T-shape, the vertical branch of which is formed by the upright 10 and the horizontal branch of which is formed by the head 11. This inverted T extends below the base 120 of the OLED diode 100, substantially perpendicularly to the lower face 101 thereof. The term “below” here means that this inverted T-shape extends opposite the emitter part 110 of the OLED diode 100, relative to the base 120 and in the height Z previously defined. This inverted T-shape is visible more particularly on
As
In one embodiment, the stop 12 comprises at least one blocking wall 12a which extends from the lower face 101 of the OLED diode 100, substantially perpendicularly to the upright 10 and the head 11. The blocking wall 12a thus extends in a plane substantially parallel to both the previously defined height Z and the width Y. More precisely, the blocking wall 12a extends to the rear end 10e of the upright 10 which is furthest away from the electrical connecting element 130 of the OLED diode 100. Advantageously, the blocking wall 12a forms a closure of the engagement grooves 3a, 3b at the end 10e of the upright 10. As an example, the width of the blocking wall 12a is at least equal to the width of the head 11.
With reference to
According to the embodiment illustrated more particularly in this figure, the guide portion 21 extends protruding from a surface of the support 200 from which the receiving part 2 emerges, in a direction B of the receiving part 2 called the elevation direction. The guide portion 21 is formed by a substantially flat upper wall 21a and two side walls 21b, 21c which are substantially parallel to each other and perpendicular to the upper wall 21a. The side walls 21b, 21c of the guide portion 21 in particular extend substantially parallel to the elevation direction B. The upper wall 21a of the guide portion extends between the edges of the side walls 21b, 21c opposite the edges by which the side walls are attached to the surface of the support 200.
The invention provides that the engagement portion 22 extends from the guide portion 21 protruding in said elevation direction B. The invention also provides that the guide portion 21 and the engagement portion 22 extend in the extension of each other in a main extension direction A of the receiving part 2, perpendicular to said elevation direction B. More precisely, the engagement portion 22 extends side by side with the guide portion 21 in the main extension direction A of the receiving part 2, from one end of the guide portion 21. It is understood here that the term “side by side” means that the engagement portion 22 is attached at one of its ends in said main extension direction A to one end of the guide portion 21 in this main extension direction A. According to the embodiment variant illustrated more particularly in
The engagement portion 22 is formed by an upper wall 23 and two side walls 24a, 24b which are substantially parallel to each other and perpendicular to the upper wall 23 of the engagement portion 22. It also comprises an inlet wall 25 at its end via which it is attached to the guide portion 21 and, at its opposite end in the main extension direction A, an end wall 26 substantially parallel to the inlet wall 25. The inlet wall 25, upper wall 23, side walls 24a, 24b and optionally the end wall 26 of the engagement portion 22 together delimit a receiving cavity 220 for the fixing element 1 of the OLED diode 100.
According to the invention, the receiving cavity 220 for the fixing element 1 opens in the inlet wall 25 of the engagement portion 22 into an opening 250. According to the embodiment variant illustrated more particularly in
It is noted that according to the variant embodiment illustrated more particularly by the figures, the side walls 21c and 21a respectively of the guide portion 21 and the engagement portion 22 form a single and same wall, in the same way as the side walls 21b and 24b respectively of the guide portion 21 and the engagement portion 22. In other words, the dimension between the side walls 21c, 21b of the guide portion 21, measured perpendicularly to the main extension direction A of the receiving part 2, is substantially equal to the dimension between the side walls 24a, 24b of the engagement portion 22, measured perpendicularly to said main extension direction A.
The upper wall 23 of the engagement portion 22 comprises a slot 230 which extends in the main extension direction A of the receiving part 2. The slot 230 is limited by two side edges 230a, 230b substantially parallel to each other and to the main extension direction A. The slot 230 opens in the inlet wall 25 into an engagement opening 231. Advantageously, the slot 230 is centred on the upper wall 23 of the engagement portion 22, i.e. it extends symmetrically on either side of the plane of symmetry P3 defined by the main extension direction A of the receiving part 2 and by the elevation direction B defined above. The plane of symmetry P3 is a central longitudinal plane of the upper wall 23 in a transverse direction C perpendicular to the elevation direction B and to the main extension direction A.
At its end opposite the engagement opening 231 in the main extension direction A of the receiving part 2, the slot 230 is closed by an end edge 230c substantially perpendicular to the side edges 230a, 230b delimiting the slot 230. In other words, the slot 230 forms a substantially rectangular incision in the upper wall 23 of the engagement portion 22, the long side of which is oriented in the previously defined main extension direction A.
It is noted that a width 11 between the side edges 230a, 230b of the slot 230, measured perpendicularly to the main extension direction A, is slightly greater than the width 12 of the upright 10 of the fixing element 1 measured in the same direction. Also, a length of the slot 230 in the main extension direction A is substantially equal to a length of the upright 10 of the fixing element 1. It is understood here that these dimensions are defined such that the upright 10 of the fixing element 1 may be fully inserted easily but without excessive play in the slot 230.
As
The width 13 measured between the shoulders 27a and 27b is greater than the width of the head 11 measured in the width Y of the fixing element 1. It must be understood here that this dimension is defined such that the head 11 of the fixing element 1 may be inserted between the shoulders 27a, 27b easily but without excessive play, in particular in the width direction of said head 11.
The result of the above is that, in a cross-sectional plane substantially perpendicular to the main extension direction A, the slot 230 and receiving cavity 220 have a shape substantially complementary to the inverted T-shape of the assembly formed by the upright 10 and the head 11 of the fixing element 1.
With reference to
In a first assembly step, the fixing element 1 of the OLED diode 100 is engaged in the previously defined receiving cavity 220. To facilitate this guidance, the fixing element 1 may be brought to rest by its head 11 against the upper wall 21a of the guide portion 21. The front end 10d of the upright 10 of the fixing element 1 is thus engaged in the opening 250 of the inlet wall 25. As a result of the respective configurations and dimensions of the slot 230 and fixing element 1, the upright 10 then engages in the engagement opening 231 via which the slot 230 opens in the inlet wall 25. In this operation, the upper wall 21a of the guide portion 21 and the presentation orifice 210 arranged therein play a guiding role and facilitate the engagement of the fixing element 1 in the receiving cavity 220.
The fixing element 1 and the OLED diode 100 which carries it are then slid in the main extension direction A of the receiving part 2, in the direction of the end wall 26 of the receiving cavity 220 and of the end edge 230c of the slot 230. In this longitudinal sliding movement, because of the respective dimensions of the slot 230 and the upright 10 of the fixing element 1, the side edges 230a, 230b of the slot 230 each engage in an engagement groove 3a, 3b of the fixing element 1. In other words, each engagement groove 3a, 3b forms a rail in which part of the upper wall 23 of the engagement portion 22 engages. It is noted that the lower face 101 of the OLED diode 100 is then substantially resting against the outer face 23a of the upper wall 23 of the engagement portion 22, the outer face 23a being the face of the upper wall situated outside the receiving cavity 220.
In said sliding movement, the side walls of the head 11 of the fixing element 1 are guided by the shoulders 27a, 27b arranged in the receiving cavity 220. The OLED diode 100 is therefore guided, by cooperation of its fixing element 1 with the slot 230 and advantageously the shoulders 27a, 27b respectively, in its sliding in the receiving part 2.
This sliding movement in the main extension direction A continues until the front end 10d of the upright 10 of the fixing element 1 meets the end edge 230c of the slot 230. Advantageously, the dimensions and in particular the width of the stop 12, and the dimension of the opening 250 in the previously defined transverse direction C, are defined such that the stop 12 substantially fully closes this opening 230, thus closing the receiving cavity 220. Such an arrangement limits any leakage of light between the technical part and the visible part of the lighting system according to the invention.
When the sliding movement of the fixing element 1 along the slot 230 is terminated, i.e. when the front end 10d of the upright 10 of the fixing element 1 comes to stop against the end edge 230c of the slot 230, the OLED diode 100 is assembled with the support 200 via the receiving part 2, thus forming the lighting device according to the invention. In this position, the longitudinal direction X of the fixing element 1 and the main extension direction A of the receiving part 2 are congruent or substantially congruent. Similarly, the direction in which the receiving part 2 extends protruding from the support 200 is congruent or substantially congruent with the height Z of the fixing element 1. The longitudinal direction X, the height Z and the width Y of the fixing element 1 therefore become respectively the longitudinal direction, height and width of the lighting device according to the invention. It also follows that the planes of symmetry P1 and P3 previously defined are congruent or substantially congruent.
In this assembled position of the lighting device according to the invention illustrated on
The OLED diode 100 is thus assembled with its support 200 in a simple and reproducible fashion.
With reference to
With reference to
According to this variant embodiment, the slit 32 also has an L-shape substantially complementary to the L-shape of the flexible tab 31. More precisely, the slit 32 is formed by a cut-out in the head 11 around the branches of the L formed by the flexible tab 31.
According to the invention, the dimensions and/or respective positions of the lug 30 and flexible tab 31 are defined such that, during the longitudinal sliding movement on insertion of the fixing element 1 inside the receiving cavity 220, the lug 30 forms an obstacle to the progression of the fixing element 1. In other words, during the sliding movement, the long branch 31a of the flexible tab 31 comes to stop against the lug 30.
Because of the flexibility of the flexible tab 31 and the specific shape of the slit 32, the flexible tab 31 deforms under the effect of the stress applied longitudinally by the continued sliding movement of the fixing element 1 in the receiving cavity 220. The long branch 31 then escapes the lug 30 and passes this.
In the continuation of the sliding movement of the fixing element 1 in the receiving cavity 220 in the direction of the end wall 26, because of the natural elasticity of the material constituting the fixing element 1 and because of the slit 32, the flexible tab 31 resumes its initial position. A rear face of the long branch 31a of the flexible tab 31 then constitutes a longitudinal stop, preventing any sliding of the fixing element 1 towards the rear, i.e. in the direction of the inlet wall 25 of the receiving cavity 220.
By providing the pre-assembly hook 3 formed by the lug 30 and the flexible tab 31, the invention allows provision of an intermediate blocking of the OLED diode 100 in its support 200, i.e. prior to its final blocking.
This figure also depicts diagrammatically a connector 5 intended to ensure the electrical connection between the connecting element 130 previously described and an electrical power supply of the OLED diode 100, not shown on the figure. It is clear that the connector 5 is arranged opposite the receiving part 2 relative to the support 200. In other words, the connector 5 and the lighting device formed by the OLED diode 100 and the receiving part 2 are each arranged on one side of a wall forming the support 200.
At least one OLED diode 100 received on a support 200 is placed in the receiving volume 600. According to the exemplary but not exclusive embodiment illustrated on
According to the particular arrangement illustrated on
The support 200 here forms a mask which separates the receiving volume 600 into a first sub-volume containing the OLED diodes and corresponding receiving parts, and the second sub-volume, also called the technical volume, containing the connectors such as the connector 5 illustrated on
As
The common piece 8, advantageously fixed on the support 200 for example via at least one screw (not shown on
The lighting devices according to the invention are electrically connected to a printed circuit board 35 via a common connection element 500, to which some or all of the connecting elements 130 previously described may be connected. The electrical connection of the printed circuit board 35 is then achieved by means of an assembly 9 for connection to an electrical power supply outside the lighting system.
The invention thus achieves a lighting device and a lighting and/or signalling system for a motor vehicle which uses at least one OLED-type diode, a lighting system and device in which the OLED diode or diodes are fixed in a simple and reproducible fashion on a support 200 or mask, which is simple and cheap to produce.
The invention described above is applied particularly advantageously but not exclusively to the lighting and/or signalling lamps situated at the rear of motor vehicles.
The invention described above is not however reduced to the means and configurations described and illustrated, and may also apply to all equivalent means or configurations and to any combination of such means. In particular, the forms described and illustrated here, in particular the form of the emitter part of the OLED diode, the substantially parallelepipedic forms of the elements of the fixing element 1 of the OLED diode 100 and of the receiving part 2, are not exclusive and any other shape may be considered insofar as it fulfils the functionalities described in the present document.
Furthermore, although the invention has been illustrated considering the particular example of an OLED source as a surface light source, it is evident that the invention applies to any type of surface light source as defined in the present text.
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