Automotive lighting device for interior lighting

Abstract

The present invention relates to a luminous device for interior lighting of a vehicle comprising a circuit substrate with a first circuit controlling a light source and a second circuit with configurable connections. The circuit substrate includes at least two pairs of pin holes, each pair designed for connector terminals with different pitch lengths from various vehicle manufacturers. The second circuit comprises four possible connection paths between coupling inputs and circuit inputs, each with closable electric discontinuities. When a specific connector is used, the appropriate pair of pin holes is selected, and the corresponding connections are activated by closing their respective discontinuities. This adaptable architecture enables a single circuit design to accommodate different connector specifications without redesign, reducing manufacturing costs while ensuring proper electrical connections regardless of the connector configuration.

Description

AUTOMOTIVE LIGHTING DEVICE FOR INTERIOR LIGHTINGFIELD OF THE INVENTION

[0001] This invention is related to the field of automotive interior lighting, and more particularly, to the improvement of the interior arrangement of these devices, especially the configuration of the connectors.BACKGROUND OF THE INVENTION

[0002] Automotive lighting market can be considered one of the most competitive ones and new lighting functionalities are constantly required.

[0003] Automotive vehicles have interior light sources, which are in charge of providing interior lighting when needed. In current automotive vehicles, these interior lights are used to customize the appearance of the interior of the vehicle, and are increasingly used in doors, dashboards, roofs and so on.

[0004] This means that the space available for these devices is reduced, and they must provide a good optical performance with this reduced space. The electronics of this kind of luminous devices include normally a printed circuit board (PCB) with the electronics, and a number of pins, which receive information from a connector which communicates information from the BCM. For example, the PCB may have four pins, each pin configured to receive VCC, GND, LIN_in and LIN_out. The connector configuration is provided by the car manufacturer, and the design and way of providing information in these connectors may be different from one manufacturer to another. Even the distance between connectors (commonly known as “pitch”) also varies for different manufacturer.

[0005] In view of the above, there is a need in the field of providing a single PCB which can be connected to the connectors of different manufacturers without unnecessarily redesigning elements within the PCB.BRIEF DESCRIPTION OF THE INVENTION

[0006] The present invention overcomes the above limitations of the prior art, by providing a luminous device for interior lighting of a vehicle according to the invention.

[0007] In a first inventive aspect, the invention provides a luminous device for interior lighting of a vehicle, the luminous device comprising a circuit substrate, wherein:the circuit substrate comprises a first circuit, a second circuit and a light source;the first circuit comprises a first circuit input, a second circuit input and a driver element configured to control the light source;the second circuit comprises a first coupling input, a second coupling input, a first connection, a second connection, a third connection and a fourth connection;the first connection provides an electric connection from the first coupling input to the first circuit input and comprises a first electric discontinuity that can be opened or closed;the second connection provides an electric connection from the first coupling input to the second circuit input and comprises a second electric discontinuity that can be opened or closed;the third connection provides an electric connection from the second coupling input to the first circuit input and comprises a third electric discontinuity that can be opened or closed;the fourth connection provides an electric connection from the second coupling input to the second circuit input and comprises a fourth electric discontinuity that can be opened or closed.

[0008] According to the invention, the circuit substrate further comprises at least two pair of pin holes, wherein each pair of pin holes are intended to be connected to a connector with a pair of terminals having a specific connector terminal pitch. Furthermore, the first pair of holes corresponds to a first pitch of the first connector terminals and the second pair of holes corresponds to a second pitch of the second connector terminals.

[0009] Additionally, each pair of pin holes is configured to enable the connection between the corresponding pair of connector terminals and at least one pair of connection from the first connection, the second connection, the third connection, and the fourth connection.

[0010] Finally, the circuit substrate is configured to activate at least one pair of connection from the first connection, the second connection, the third connection, and the fourth connection.

[0011] This interior lighting is intended to receive commands and power supply by a connector, which communicates power and information from the Body Control Module. The connector is designed by the automotive manufacturer, and each automotive manufacturer may define a connector with different features. For example, the automotive manufacturer connector may have a first pin for VCC and a second pin for GND, but a different manufacturer may provide a connector with the first pin for GND and the second pin for VCC. In addition, different automotive manufacturers can have connectors having terminals (also referred to as connector legs) with varying pitch length that needs to be connected with the luminous device supplied by the supplier. To avoid the provision of one circuit substrate for each different manufacturer, the present invention provides a luminous device which comprises a first coupling input and a second coupling input. These two coupling inputs are intended to couple with the connector provided by the first manufacturer.

[0012] Needless to say, the connector may have more than two pins and the second circuit of the present invention may comprise more than two coupling inputs, so that each coupling input is connected to one pin of the connector provided by the car manufacturer. But in the more general case, the invention refers to the fact that, taking into account just two coupling inputs, the first coupling input may be directed to the first circuit input or to the second circuit input, just by closing the either the first or the second connection. The same happens with the second coupling input and the third and fourth connections. This invention may be extended to the case of having 4, 8 or any number of pins in the connector provided by the car manufacturer. Since this connector is not part of the invention, the number of coupling inputs is not limited.

[0013] Hence, the discontinuities present in each of the first, second, third and fourth connections can be spaces where electric connection is interrupted or open. Each discontinuity may be easily closed by an electronic component, such as a resistor with low ohmic impedance or a jumper. The invention is based on the fact that only desired discontinuities are closed, while the others remain open. The electrical connection is then configured to have a possibility to be open circuited or closed circuit.

[0014] Further, the circuit substrate comprises at least two pairs of pin holes, wherein each pair is specifically designed to accommodate connector terminals with different pitch lengths. The first pair of pin holes corresponds to a first connector terminal pitch (for example, 2.1 mm), while the second pair of pin holes corresponds to a second connector terminal pitch (for example, 1.8 mm). This dual-pitch design allows the same circuit substrate to interface with connectors from different automotive manufacturers without requiring redesign.

[0015] Each pair of pin holes is strategically positioned on the circuit substrate to enable electrical connection between the corresponding connector terminals and at least one pair of the four possible connections (the first connection, the second connection, the third connection, and the fourth connection).

[0016] This configurable connection system enables the same circuit substrate to adapt to different connector specifications from various automotive manufacturers, eliminating the need for multiple circuit designs to accommodate different connector pitches. The manufacturer can simply select the appropriate pair of pin holes based on the connector pitch length required for a particular vehicle model, and then activate the corresponding connections by closing the appropriate electric discontinuities.With this invention, design cost and time is reduced, because there is no need of multiple designs of the layout of the printed circuit boards (PCBs) to meet the different designs of the car manufacturer connector. With only one layout, the invention provides a circuit which is valid for different options or designs of the car manufacturer connectors.

[0017] In some particular embodiments,

[0018] the circuit substrate comprises at least a first layer and a second layer, and

[0019] at least one of the first connection, the second connection, the third connection and the fourth connection comprises a via which connects a point in the first layer with a point in the second layer.

[0020] The circuit substrate may be a two-layer or three layer or four-layer or multi-layered printed circuit board. The number of layers in the PCB may be used to create multiple circuit paths without electric contact between the different circuit paths. The multi-layered PCB is useful when one conductive track must cross a different conductive track of another circuit path without contacting. Further, vias are used to change the electric path from one layer to another, to make this crossing without contact possible.

[0021] In some particular embodiments, at least one of the first connection, the second connection, the third connection and the fourth connection comprises a jumper installed in the corresponding electric discontinuity, which closes the electric discontinuity.

[0022] As indicated above, the circuit as presented in the general definition of the invention is ready to meet the needs of different car manufacturers. The installation of an electronic component, such as a zero ohm resistor or a jumper, in one or more of the electric discontinuities makes the circuit operative to be installed in a vehicle.

[0023] In some particular embodiments, the luminous device further comprises an optical element configured to receive the light emitted by the light source.

[0024] An optical element is an element that has some optical properties to receive a light beam and emit it in a certain direction and / or shape, as a person skilled in automotive lighting would construe without any additional burden. Reflectors, collimators, light guides, projection lenses, etc., or the combination thereof are some examples of these optical elements which are useful for transforming the light beams emitted by the light source into an acceptable light pattern for the functionality chosen for the lighting device.

[0025] In some particular embodiments, the optical element is a light guide or a reflector or a massive light guide.

[0026] Depending on the shape and position of the interior light, a tube-type light guide, a massive light guide or a simple reflector will be the best option to achieve the projection of the light emitted by the light sources.

[0027] In some particular embodiments, the light source is a solid-state light source, such as a light emitting diode.

[0028] The term "solid state" refers to light emitted by solid-state electroluminescence, which uses semiconductors to convert electricity into light. Compared to incandescent lighting, solid state lighting creates visible light with reduced heat generation and less energy dissipation. The typically small mass of a solid-state electronic lighting device provides for greater resistance to shock and vibration compared to brittle glass tubes / bulbs and long, thin filament wires. They also eliminate filament evaporation, potentially increasing the lifespan of the illumination device. Some examples of these types of lighting comprise semiconductor light-emitting diodes (LEDs), organic light-emitting diodes (OLED), or polymer light-emitting diodes (PLED) as sources of illumination rather than electrical filaments, plasma or gas. These light sources are specifically advantageous, since they provide the required luminous properties for the automotive regulations with a high efficiency and reliability.

[0029] In some particular embodiments, the at least one light source is configured to cooperate to provide an interior lighting function.

[0030] Lighting or signalling functions which require a reduced space will receive a higher benefit from this invention, since heat dissipation requirements are met without the need of substantially increasing the size of the electronic circuit.

[0031] In some particular embodiments, the second circuit comprises at least two first pin holes and at least two second pin holes, wherein the first pin holes are electrically connected to the first coupling input and the second pin holes are electrically connected to the second coupling input.

[0032] The two first pin holes and the two second pin holes are arranged such that one of the two first pin holes is paired with one of the two second pin holes to form a first pair of pin holes that is intended to be connected to a connector with a pair of terminals having a first connector terminal pitch. Similarly, the other pin hole from the two first pin holes is paired with the other pin hole from the two second pin holes to form a second pair of pin holes that is intended to be connected to a connector with a pair of terminals having a second connector terminal pitch.

[0033] The pin holes are holes configured to receive pins. These pin holes are configured to receive pins which will be connected with the car manufacturer connector, specifically with the pair of terminals of the connector, which is usually a female connector. However, in these embodiments, it is advantageous that pins are independent elements, since they can be customized (e.g., bended) to meet the features of the car manufacturer connector. The pin holes are standard for every car manufacturer connector design, and the pins would be the elements which have a design dependent on the car manufacturer connector.

[0034] In fact, in a second inventive aspect, the invention provides a luminous device for interior lighting comprising a circuit substrate comprising a first circuit and a second circuit, wherein

[0035] the first circuit comprises a first circuit input, a second circuit input and a light source;

[0036] the second circuit comprises at least two first pin holes and at least two second pin holes, wherein the first pin holes are electrically connected to the first coupling input and the second pin holes are electrically connected to the second coupling input.

[0037] In some particular embodiments, the distance between one of the first pin holes and one of the second pin holes is 2.1 mm. In parallel, the distance between the other of the first pin holes and the other of the second pin holes is 1.8 mm. Consequently, the circuit comprises two pairs of pin holes which correspond respectively to a first connector terminal pitch of 2.1 mm and to a second connector terminal pitch of 1.8 mm.

[0038] These are common distances in the connectors provided by car manufacturers, so this can enable the device of the invention to match with these connectors.

[0039] In some particular embodiments, the luminous device further comprises at least one pin, each pin being inserted in one of the pin holes, wherein the pin comprises an insertion portion and a connection portion, and the connection portion is bended so that the distance between the tips of the connection portions is greater or lower than the distance between the corresponding pin holes.

[0040] One way of adapting the luminous device of the invention to different connectors is to customize the shape of the pins which are inserted in the pin holes. These pins have an insertion portion and a connection portion, which has a tip.

[0041] In some particular embodiments, the luminous device further comprises a second circuit substrate, and the light source is arranged in the second circuit substrate, and the light source is connected to the driver element by means of a harness.

[0042] In an advantageous embodiment, the luminous device comprises a circuit substrate with a first pair of pin holes and a second pair of pin holes, wherein both pairs share a common first coupling input and a common second coupling input. This shared coupling input architecture provides remarkable flexibility for adapting to different connector specifications from various vehicle manufacturers without requiring a complete redesign of the circuit. The circuit substrate is ingeniously configured with selectable connection paths: when the second pair of pin holes is selected for connection, the second and third connections can be activated by closing their respective electric discontinuities, while the first and fourth connections remain open; conversely, when the first pair of pin holes is selected, the first and fourth connections can be activated by closing their respective electric discontinuities, while the second and third connections remain open. This elegant solution significantly reduces manufacturing costs and design complexity by eliminating the need for multiple circuit board variants to accommodate different connector terminal pitches. The operator can simply select the appropriate pin hole pair and activate the corresponding connections based on the specific connector requirements of a particular vehicle manufacturer, thereby implementing an effective mistake-proofing system that prevents connection errors. This adaptability is particularly valuable in automotive manufacturing environments where lighting components must be compatible with specifications from multiple vehicle manufacturers, ultimately streamlining the supply chain and reducing inventory complexity.

[0043] The light source may be, according to the needs of the car manufacturer, far from the driver. In these cases, the light source can be mounted on a separate circuit substrate. However, this does not prevent the device from achieving its aim.

[0044] All the terms and embodiments described anywhere in this document are equally applicable to all aspects of the invention. It should be noted that, as used in the specification and in the appended claims, the singular forms “a”, “an”, and “the” include their plural referents unless the context clearly indicates otherwise. Similarly, the term “comprises” or “comprising” as used herein also describes “consists of” or “consisting of” in accordance with generally accepted patent practice.DESCRIPTION OF THE DRAWINGS

[0045] The foregoing and other features and advantages will be more fully understood from the detailed description of the invention, as well as from examples referring to the attached figures, which are described in the following paragraphs, wherein:

[0046] shows a luminous device according to the invention installed in an automotive vehicle.

[0047] shows a general approach of a particular embodiment of a luminous device according to the invention.

[0048] shows the electric arrangement of a particular embodiment of a luminous device according to the invention.

[0049] shows the electric arrangement ofin a particular embodiment of use.

[0050] shows the electric arrangement of a different luminous device according to the invention.

[0051] shows the electric arrangement of a different luminous device according to the invention.

[0052] shows a combination between the arrangement ofand the arrangement of.

[0053] shows a combination of pin holes and connector terminal with varying pitch length in the circuit substrate according to an embodiment of the invention.Numerical references used in the drawings

[0054] In order to provide a better understanding of the technical features of the invention, the referred Figures are accompanied by the following numerical references:1First circuit input2Second circuit input3LED4First coupling input5Second coupling input6First connection7Second connection8Third connection9Fourth connection10Luminous device11First electric discontinuity12Second electric discontinuity13Third electric discontinuity14Fourth electric discontinuity15First pinhole16Second pinhole17Lightguide18RGB module19Vehicle connector20Driver element21Harness22Pin23Tip of the pin100Automotive vehicle150External Pair of Pin Holes160Internal Pair of Pin Holes170Connector TerminalXConnector Terminal PitchYConnector Terminal PitchDETAILED DESCRIPTION OF THE INVENTION

[0055] The detailed description of the present invention to be described below refers to the accompanying drawings, which illustrate specific embodiments in which the present invention may be implemented. These embodiments will be described in detail sufficient to enable those skilled in the art to implement the present invention. It should be understood that various embodiments of the present invention are different from each other but need not be mutually exclusive. Accordingly, the detailed description to be described below is not intended to be taken in a limiting meaning, and the scope of the present invention, if properly described, is limited only by the appended claims, in addition to all scopes equivalent to those claimed by the appended claims. In the drawings, reference numerals refer to the same or similar functions over several aspects.

[0056] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0057] shows a luminous device according to the invention installed in an automotive vehicle 100.

[0058] This luminous device comprises a plurality of light emitting diodes (LEDs) which emit light and a lightguide 17 which projects the light to the interior of the vehicle 100.

[0059] shows a general approach of a particular embodiment of a luminous device according to the invention.

[0060] As can be seen in this figure, the luminous device 10 comprises a RGB module 18 which comprises the electronic arrangement including a group of LEDs 3. These LEDs 3 emit light which is projected by the light guide 17. The RGB module 18 receives the power supply and instructions from a vehicle connector which in turn receives communication from the Body Control Module of the vehicle.

[0061] shows the electric arrangement of a particular embodiment of a luminous device according to the invention.

[0062] This electric arrangement includes a first printed circuit board and a second printed circuit board. The first printed circuit board comprises a first circuit and a second circuit, which are coupled. The first circuit comprises a driver element 20, which is in charge of controlling the LED 3. The LED is located in the second printed circuit board, and is connected to the first printed circuit board by means of a harness 21. The second circuit is intended to provide the physical connection with a vehicle connector 19 provided by the car manufacturer.

[0063] The first circuit comprises a first circuit input 1, a second circuit input 2 and the aforementioned driver element 20. The first circuit input 1 is configured to receive a VCC signal, while the second circuit input 2 is configured to receive a GND signal. This illustration is provided as a simplified example, the first circuit may provide several further circuit inputs, with different functions. However, for the sake of clarity in the exposition of the invention, only these two circuit inputs 1, 2, are described.

[0064] The second circuit comprises a first coupling input 4 and a second coupling input 5. These inputs are directly connected to the pins of the vehicle connector. Hence, these coupling inputs do not have a predetermined function; each one may receive a VCC signal or a GND signal, depending on the car manufacturer.

[0065] To solve this problem, the second circuit also comprises a first connection 6, a second connection 7, a third connection 8, and a fourth connection 9. The first connection 6 provides an electric connection from the first coupling input 4 to the first circuit input 1, the second connection 7 provides an electric connection from the first coupling input 4 to the second circuit input 2, the third connection 8 provides an electric connection from the second coupling input 5 to the first circuit input 1, and the fourth connection 9 provides an electric connection from the second coupling input 5 to the second circuit input 2.

[0066] As may be seen in this figure, the second connection 7 crosses the third connection 8. Since these two connections must not be in electric contact, the printed circuit board comprises a first layer and a second layer, and the second connection comprises a via which connects a point in the first layer with a point in the second layer, and another via to take the connection back to the first layer.

[0067] As can be seen, all of these connections 6, 7, 8, 9 comprises an electric discontinuity 11, 12, 13, 14: all of the circuits are open, and only the connections required for a particular variant of a vehicle will be closed. When the car manufacturer provides the information about the signal that is provided in each pin of the vehicle connector, the appropriate connections will be shorted.

[0068] shows the electric arrangement ofin a particular embodiment of use.

[0069] In this example, the interior lighting functionality of a type of car requires that the vehicle connector 19 will provide the GND signal in the first pin (which is intended to be coupled to the first coupling input 4) and the VCC signal in the second pin (which is intended to be coupled to the second coupling input 5). Since the PCB of the luminous device has a setting where the first circuit input 1 is configured to receive a VCC signal and the second circuit input 2 is configured to receive a GND signal, in this example, the first coupling input 4 is configured to be connected to the second circuit input 2 and the second coupling input 5 is configured to be connected to the first circuit input 1.

[0070] To close the necessary circuit paths, a jumper can be installed in the discontinuity of the second connection 7, and an additional jumper can be installed in the discontinuity of the third connection 8. In an embodiment, the jumper is a zero ohm resistor that can be Surface Mounted (SMD) on the PCB to close the circuit. In another embodiment, the jumper is a zero ohm resistor that can be mounted on the PCB by a through hole. In another embodiment, the jumper can be a cable.

[0071] shows the electric arrangement of a different luminous device according to the invention.

[0072] In this case, the second circuit comprises a first pinhole 15 and a second pinhole 16. The first pinhole 15 is electrically connected to the first coupling input 4 and the second pinhole 16 is electrically connected to the second coupling input 5.

[0073] A pinhole is a hole which is adapted to receive a pin 22. With the configuration of the present invention, a first pin 22 will be inserted in the first pinhole 15 and a second pin 22 will be inserted in the second pinhole 16. Each pin 22 has an insertion portion and a connection portion, and the connection portion is bended so that the distance between the tips 23 of the connection portions fits with the distance established by the pins of the vehicle connector 19.

[0074] shows the electric arrangement of a different luminous device according to the invention.

[0075] In this case, the second circuit comprises two first pin holes 15 and two second pin holes 16. The first pin holes 15 are electrically connected to the first coupling input 4 and the second pin holes 16 are electrically connected to the second coupling input 5.

[0076] With the configuration of the present invention, a first pin 22 will be inserted in one of the first pin holes 15 and a second pin 22 will be inserted in one of the second pin holes 16. The choice between the different pin holes will be determined by the distance between the two pins of the vehicle connector.

[0077] shows a combination between the arrangement ofand the arrangement of.

[0078] In this case, the second circuit comprises two first pin holes 15 and two second pin holes 16. The first pin holes 15 are electrically connected to the first coupling input 4 and the second pin holes 16 are electrically connected to the second coupling input 5.

[0079] With the configuration of the present invention, a first pin will be inserted in one of the first pin holes 15 and a second pin will be inserted in one of the second pin holes 16. The choice between the different pin holes will be determined by the distance between the two pins of the vehicle connector.

[0080] In an example embodiment, the distance between the exterior first pinhole and the exterior second pinhole is 2.1 mm, while the distance between the interior first pinhole and the interior second pinhole is 1.8 mm. Since the vehicle connector provides a separation between pins of 2.1 mm, the exterior pin holes will receive a pin, while the interior pin holes will be empty.

[0081] In this example, the interior lighting functionality of a type of car requires that the vehicle connector will provide the GND signal in the first pin (which is intended to be coupled to the first coupling input 4) and the VCC signal in the second pin (which is intended to be coupled to the second coupling input 5). Since the printed circuit board of the luminous device has a setting where the first circuit input 1 is configured to receive a VCC signal and the second circuit input 2 is configured to receive a GND signal, in this example, the first coupling input 4 should be connected to the second circuit input 2 and the second coupling input 5 should be connected to the first circuit input 1.

[0082] To do so, a jumper is installed in the discontinuity of the second connection 7 and another jumper is installed in the discontinuity of the third connection 8.

[0083] shows a combination of pin holes and connector terminal with varying pitch length in the circuit substrate according to the invention. The circuit substrate comprises at least two pin holes that corresponds to an external pair of pin holes 150 (otherwise called first pair of pin holes) and an internal pair of pin holes 160 (otherwise called second pair of pin holes). Each pair of pin holes are intended to be connected to a connector with a pair of terminals 170 having a specific connector terminal pitch. The pair of pin holes 150, 160 are configured to enable the connection between the corresponding pair of terminals 170 and at least one pair of connection from the first connection 6, the second connection 7, the third connection 8, and the fourth connection 9.

[0084] In an example embodiment, the internal pair of pin holes 160 is connected to the connector terminals 170 having a specific pitch length X. Further, the internal pair of pin holes 150 is configured to enable the second connection 7 and the third connection 8 that is connected between the pair of connector terminals 170 having the specific pitch length X. Additionally, the second connection 7 and the third connection 8 are activated by closing the second electric discontinuity 12, and the third electric discontinuity 13. Therefore, the circuit substrate is configured to activate at least one pair of connection, in this case, the second connection 7 and the third connection 8. In this case, the external pair of pin holes 150 is left as an open circuit along with the first connection 6 and the fourth connection 9.

[0085] As shown in, the external pair of pin holes 150 and internal pair of pin holes 160 share a common first coupling input 4 and second coupling input 5. This shared coupling input architecture enables the operator to modify the poka-yoke to accommodate different connector terminal pitch specifications from different vehicle manufacturers. By utilizing these common coupling inputs, the circuit substrate can be easily reconfigured to match the specific terminal pitch requirements without necessitating a complete redesign of the circuit architecture.

[0086] In another example embodiment, the connector terminal 170 pitch can have a length Y that corresponds to the external pair of pin holes 150 (otherwise called first pair of pin holes). In this case, pin holes 150 enables the first connection 6 and the fourth connection 9. Further, the first connection 6 and the fourth connection 9 are activated by closing the first electric discontinuity 11, and the fourth electric discontinuity 14. In this case, the internal pair of pin holes 160 is left as an open circuit along with the second connection 7 and the third connection 8. The common first coupling input 4 and second coupling input 5 provide a versatile interface that allows for seamless switching between different terminal pitch configurations. This adaptability is particularly valuable in automotive manufacturing environments where components must be compatible with specifications from multiple vehicle manufacturers. The operator can select the appropriate pin holes pair (either 150 or 160) through the coupling inputs based on the specific connector terminal pitch required for a particular vehicle manufacturer, thereby implementing an effective poka-yoke system that prevents connection errors. Thus, the present invention is able to provide the same circuit architecture for varying pitch lengths of the connector terminals provided by the different automotive manufacturers.

Claims

Luminous device (10) for interior lighting of a vehicle, the luminous device comprising a circuit substrate, whereinthe circuit substrate comprises a first circuit, a second circuit, and a light source (3);the first circuit comprises a first circuit input (1), a second circuit input (2) and a driver element (20) configured to control the light source (3);the second circuit comprises a first coupling input (4), a second coupling input (5), a first connection (6), a second connection (7), a third connection (8) and a fourth connection (9);the first connection (6) is configured to provide an electric connection from the first coupling input (4) to the first circuit input (1) and comprises a first electric discontinuity (11) that can be opened or closed;the second connection (7) is configured to provide an electric connection from the first coupling input (4) to the second circuit input (2) and comprises a second electric discontinuity (12) that can be opened or closed;the third connection (8) is configured to provide an electric connection from the second coupling input (5) to the first circuit input (1) and comprises a third electric discontinuity (13) that can be opened or closed; andthe fourth connection (9) is configured to provide an electric connection from the second coupling input (5) to the second circuit input (2) and comprises a fourth electric discontinuity (14) that can be opened or closed;characterized in thatthe circuit substrate further comprises at least two pair of pin holes, wherein each pair of pin holes are intended to be connected to a connector with a pair of terminals having a specific connector terminal pitch;each pair of pin holes is configured to enable the connection between the corresponding pair of terminals and at least one pair of connection from the first connection, the second connection, the third connection, and the fourth connection; andthe circuit substrate is configured to activate at least one pair of connection from the first connection, the second connection, the third connection, and the fourth connection.Luminous device (10) according to claim 1, wherein the second circuit comprises at least two first pin holes (15) and at least two second pin holes (16), wherein the first pin holes (15) are electrically connected to the first coupling input (4) and the second pin holes (16) are electrically connected to the second coupling input (5).Luminous device (10) according to claim 2, whereinthe two first pin holes (15) and the two second pin holes (16) are arranged such that one of the two first pin holes (15) is paired with one of the two second pin holes (16) to form a first pair of pin holes (150) that is intended to be connected to a connector with a pair of terminals having a first connector terminal pitch (X), andthe other of the two first pin holes (15) is paired with the other of the two second pin holes (16) to form a second pair of pin holes (160) that is intended to be connected to a connector with a pair of terminals having a second connector terminal pitch (Y).Luminous device (10) according to claim 1, whereinthe at least two pair of pin holes comprise a first pair of pin holes (150) and a second pair of pin holes (160),wherein the first pair of pin holes (150) and the second pair of pin holes (160) share a common first coupling input (4) and a common second coupling input (5),wherein the circuit substrate is configured such that:when the second pair of pin holes (160) is selected for connection, the second connection (7) and the third connection (8) are configured to be activated by closing the second electric discontinuity (12) and the third electric discontinuity (13), while the first connection (6) and the fourth connection (9) remain as open circuits, andwhen the first pair of pin holes (150) is selected for connection, the first connection (6) and the fourth connection (9) are configured to be activated by closing the first electric discontinuity (11) and the fourth electric discontinuity (14), while the second connection (7) and the third connection (8) remain as open circuits.Luminous device (10) according to claim 1, further comprising at least one pin (22), wherein each pin (22) is configured to be inserted in one of the pin holes (15, 16), wherein the pin (22) comprises an insertion portion and a connection portion, and wherein the connection portion is configured to be bended so that the distance between tips (23) of the connection portion is greater or lower than the distance between the corresponding pin holes (15, 16).Luminous device (10) according to any one of the preceding claims, whereinthe first coupling input (4) is a supply terminal and one of the first circuit input (1) or the second circuit input (2) is a supply terminal; andthe second coupling input (5) is a ground terminal and the other one of the first circuit input (1) or the second circuit input (2) is a ground terminal.Luminous device (10) according to any one of the preceding claims, whereinthe circuit substrate comprises at least a first layer and a second layer, andat least one of the first connection (6), the second connection (7), the third connection (8) and the fourth connection (9) comprises a via configured to connect a point in the first layer with a point in the second layer.Luminous device (10) according to any one of the preceding claims, wherein at least one of the first connection, the second connection, the third connection and the fourth connection comprises a jumper configured to be installed in the corresponding electric discontinuity, thereby closing the electric discontinuity.Luminous device (10) according to any one of the preceding claims, the luminous device further comprising an optical element configured to receive the light emitted by the light source.Luminous device (10) according to any one of the preceding claims, further comprising a second circuit substrate, wherein the light source is arranged in the second circuit substrate, and the light source is connected to the driver element by means of a harness (21).

Images