Flexible light strip, lighting device and motor vehicle

Abstract

The present application provides a flexible light strip, a lighting device and a motor vehicle, the flexible light strip comprising a flexible circuit board (10), the flexible circuit board comprising a first end (11) and a second end (12) arranged opposite each other, the flexible circuit board extending in a length direction (Y) from the first end to the second end, the flexible circuit board comprising multiple base parts (13) and multiple connecting parts (14), the multiple base parts being spaced apart in the length direction, the multiple base parts being connected together by means of the multiple connecting parts, and the multiple base parts and the multiple connecting parts forming a single piece; and multiple light source assemblies (20), correspondingly arranged on first faces (131) of the multiple base parts (13) and electrically connected to each other by means of the multiple connecting parts.

Description

Flexible light strip, lighting device and motor vehicle

[0001] The present application relates to the technical field of lighting, in particular to a flexible light strip, a lighting device and a motor vehicle.

[0002] In the technical field of lighting, a variety of lighting devices are known for providing light for lighting and / or signalling. For example, lighting devices are used in motor vehicles to provide lighting and / or signalling functions, so as to ensure safe travel, or to provide a decorative function.

[0003] Flexible light strips are already widely used in motor vehicles, but the applicant has noticed that existing flexible light strips can only be bent in one direction, so are unable to meet more complex and diverse styling requirements; or they employ very complex connection structures to achieve a three-dimensional light shape, which obviously increases costs.

[0004] Thus, there is in fact an urgent need at present to design a flexible light strip with a simple structure that is not limited to being bent in only one direction.Summary of the Invention

[0005] An objective of the present application is to overcome at least one of the problems and shortcomings in the prior art.

[0006] A first aspect of the present application provides a flexible light strip, comprising:

[0007] a flexible circuit board, comprising a first end and a second end arranged opposite each other, the flexible circuit board extending in a length direction from the first end to the second end, the flexible circuit board comprising multiple base parts and multiple connecting parts, the multiple base parts being spaced apart in the length direction, the multiple base parts being connected together by means of the multiple connecting parts, and the multiple base parts and the multiple connecting parts forming a single piece; and multiple light source assemblies, correspondingly arranged on first faces of the multiple base parts (13) and electrically connected to each other by means of the multiple connecting parts.

[0008] In some embodiments, the flexible circuit board has freedom to bend in any way in three-dimensional space.

[0009] In some embodiments, a thickness of each of the connecting parts is equal to a thickness of the base part;

[0010] the thickness of each of the connecting parts is less than or equal to 0.5 mm, or less than or equal to 0.3 mm,

[0011] the thickness of each of the base parts is less than or equal to 0.5 mm, or less than or equal to 0.3 mm.

[0012] In some embodiments, there is a hollow part between adjacent said base parts, and the connecting part has freedom to deform towards the hollow part;

[0013] wherein the connecting part is S-shaped, wave-shaped or C-shaped.

[0014] In some embodiments, a width of each of the connecting parts is less than 1 / 2 of a width of the base part, and less than 2 mm.

[0015] In some embodiments, the flexible light strip further comprises multiple hard reinforcement parts, the multiple reinforcement parts being correspondingly arranged on second faces of the multiple base parts, the second faces of the base parts being arranged opposite the first faces of the base parts.

[0016] In some embodiments, each of the light source assemblies comprises an LED and a light source control circuit electrically connected to each other;

[0017] the light source control circuit being configured to control the operation of the LED according to a received control signal.

[0018] In some embodiments, the connecting part is configured to transmit a control signal and / or a power signal.

[0019] In some embodiments, the flexible light strip further comprises conductive wires soldered to the first faces of the multiple base parts, the multiple conductive wires being configured to transmit a power signal to the multiple light source assemblies.

[0020] In some embodiments, the conductive wires comprise bending parts, and the conductive wires are two in number, the two conductive wires being respectively soldered to two opposite sides of the multiple light source assemblies; one of the two conductive wires is configured to be electrically connected to a power supply positive pole of an external driving circuit, and the other is configured to be electrically connected to a power supply negative pole of the external driving circuit.

[0021] In some embodiments, the flexible circuit board is a single flexible circuit board; or

[0022] the flexible circuit board is multiple flexible circuit boards electrically connected together;

[0023] the base part located at an end in each of the flexible circuit boards comprises a connector, which is configured to be electrically connected to another of the flexible circuit boards or an external driving circuit.

[0024] In some embodiments, the flexible light strip further comprises a light output layer, configured to output light emitted by the light source assemblies;

[0025] a light reflection layer, configured to reflect light emitted by the light source assemblies to the light output layer;

[0026] a transparent layer, arranged on a side of the flexible circuit board that faces away from the light source assemblies;

[0027] the light output layer, the light reflection layer and the transparent layer are integrally formed by a co-extrusion process, the flexible circuit board and the multiple light source assemblies being accommodated in a space enclosed by the light reflection layer, the light output layer and the transparent layer.

[0028] A second aspect of the present application provides a lighting device, comprising a flexible light strip as provided in the first aspect and the embodiments above.

[0029] In some embodiments, the lighting device further comprises a hard casing, the flexible light strip being arranged in the casing and maintaining a three-dimensional light output pattern.

[0030] A third aspect of the present application provides a motor vehicle, comprising a flexible light strip as provided in the first aspect and the embodiments above, or a lighting device as provided in the second aspect and the embodiments above.Brief Description of the Drawings

[0031] is a main view of a flexible light strip provided in a first embodiment of the present application;

[0032] is a top view of the flexible light strip shown in;

[0033] is a partial enlarged schematic drawing A1 of the flexible light strip shown in;

[0034] is a partial enlarged schematic drawing A2 of the flexible light strip shown in;

[0035] is a main view of the flexible light strip shown inin a bent state;

[0036] is a top view of the flexible light strip shown inin a bent state;

[0037] is a main view of a flexible light strip provided in a second embodiment of the present application;

[0038] is a top view of the flexible light strip shown in;

[0039] is a partial enlarged schematic drawing B1 of the flexible light strip shown in;

[0040] is a partial enlarged schematic drawing B2 of the flexible light strip shown in;

[0041] is a main view of a flexible light strip provided in a third embodiment of the present application;

[0042] is a top view of the flexible light strip shown in;

[0043] is a partial enlarged schematic drawing C of the flexible light strip shown in;

[0044] is a main view of the flexible light strip shown inin a bent state;

[0045] is a top view of the flexible light strip shown inin a bent state;

[0046] is a structural schematic drawing of a flexible light strip provided in a fourth embodiment of the present application;

[0047] is a partial structural schematic drawing of the flexible light strip shown in, wherein the flexible light strip comprises a conductive wire;

[0048] is a partial structural schematic drawing of a variant embodiment of the flexible light strip shown in, wherein the flexible light strip does not comprise a conductive wire;

[0049] is a structural schematic drawing of a lighting device provided in a fifth embodiment of the present application;

[0050] is an exploded drawing of the lighting device shown in;

[0051] is a main view of the lighting device shown in;

[0052] is a top view of the lighting device shown in;

[0053] is a left view of the lighting device shown in;

[0054] is a circuit diagram of a lighting device provided in an embodiment of the present application.Detailed Description of the Invention

[0055] Embodiments of the present application will be described in detail below with reference to the drawings. It should be understood that these embodiments of the present application are mainly possible embodiments intended to illustrate the technical solution of the present application, and should not be interpreted as limitations of the technical solution of the present application. In this Description, identical or similar components are indicated with identical or similar reference numerals.

[0056] is a main view of a flexible light strip 100 provided in a first embodiment of the present application;is a top view of the flexible light strip 100 shown in;is a partial enlarged schematic drawing A1 of the flexible light strip 100 shown in;is a partial enlarged schematic drawing A2 of the flexible light strip 100 shown in;is a main view of the flexible light strip 100 shown inin a bent state; andis a top view of the flexible light strip 100 shown inin a bent state.is a circuit diagram of a lighting device 500 provided in an embodiment of the present application.

[0057] As shown in Figs. 1 - 6 and 24, the first embodiment of the present application provides a flexible light strip 100, which flexible light strip 100 can be used in a lighting device 500. The flexible light strip 100 comprises a flexible circuit board 10 and multiple light source assemblies 20; the flexible circuit board 10 may be a flexible PCB, which can be bent in a certain direction. The flexible circuit board 10 comprises a first end 11 and a second end 12 arranged opposite each other; the flexible circuit board 10 extends in a length direction Y from the first end 11 to the second end 12, and the flexible circuit board 10 is substantially in the form of a long strip. The flexible circuit board 10 comprises multiple base parts 13 and multiple connecting parts 14, the multiple base parts 13 being spaced apart in the length direction Y, and the multiple base parts 13 being connected together by means of the multiple connecting parts 14; for example, the base parts 13 are arranged alternately with the connecting parts 14, with at least one connecting part 14 being connected between any two adjacent base parts 13, and one base part 13 being connected between any two adjacent connecting parts in the length direction. The multiple base parts 13 and the multiple connecting parts 14 form a single piece, i.e. the multiple base parts 13 and the multiple connecting parts 14 are formed on the same circuit board, rather than having multiple independent circuit boards connected together secondarily. The multiple light source assemblies 20 are correspondingly arranged on first faces 131 of the multiple base parts 13; for example, the multiple light source assemblies 20 and the multiple base parts 30 are arranged in one-to-one correspondence, and the multiple light source assemblies 20 are electrically connected to each other via the multiple connecting parts 14.

[0058] In the first embodiment, using the one-piece flexible circuit board 10 to form the flexible light strip 100 can simplify the manufacturing process of the flexible light strip 100, while meeting requirements for flexible deformation of the flexible light strip 100. In addition, as a result of having the light source assemblies 20 arranged on the base parts 13 alone and not on the connecting parts 14, i.e. with only conductive leads and no electronic devices arranged on the connecting parts 14, bending of the flexible light strip 100 can be achieved through deformation of the connecting parts 14.

[0059] The structure of the connecting parts 14 can be designed to enable the flexible circuit board 10 to have freedom to bend in any way in three-dimensional space; that is, the flexible light strip 100 can bend in any way in three-dimensional space, without being limited to bending in just one direction as in the prior art. For example, in Figs. 5 - 6, the flexible light strip 100 can bend in the YZ plane and also in the YX plane.

[0060] In the first embodiment, since the base parts 13 and the connecting parts 14 belong to the same circuit board, the thickness of each connecting part 14 can be designed to be equal to the thickness of the base parts 13, so that the manufacturing process is simpler and easier to perform. In addition, the thicknesses of the connecting parts 14 and the base parts 13 may be designed to be relatively thin. In this way it is ensured that the flexible circuit board 10 can bend in a thickness direction Z, the thickness direction Z being perpendicular to a length direction Y, for example, bend into the state shown in. Specifically, the thickness of each connecting part 14 may be designed to be less than or equal to 0.5 mm, or more preferably, less than or equal to 0.3 mm; and the thickness of each base part 13 may be designed to be less than or equal to 0.5 mm, or more preferably, less than or equal to 0.3 mm. For example, the connecting part 14 and the base part 13 both have a thickness of 0.2 mm or 0.3 mm.

[0061] In the first embodiment, there is a hollow part 15 between two adjacent base parts 13, and the connecting part 14 has freedom to deform towards the hollow part 15. As a result of providing the hollow part 15 between the base parts 13, the connecting part 14 having freedom to deform towards the hollow part 15 by, for example, elongation, compression or bending, etc., it is ensured that the flexible circuit board 10 can bend in the width direction X, the width direction X being perpendicular to the length direction Y and the thickness direction Z, for example, bend into the state shown in. Specifically, the connecting part 14 may be designed to be S-shaped; the S-shaped connecting part 14 can have better freedom of elongation or compression. In other embodiments, the connecting part 14 may be wave-shaped, i.e. the connecting part 14 comprises multiple semicircles or arcs connected to each other, thus having a wave shape overall; or the connecting part 14 is C-shaped, as long as it can be ensured that the connecting part 14 can have better freedom of elongation or compression.

[0062] To enable the connecting parts 14 to have better deformation properties, the width of each connecting part 14 must be designed as small as possible while meeting electrical requirements; the width of each connecting part 14 is less than 1 / 2 or 1 / 4 of the width of the base part 13, or even less than 2 mm. For example, the width of each connecting part 14 is 1 mm or 0.8 mm. In the first embodiment, two connecting parts 14 are arranged between two adjacent base parts 13, and the two connecting parts 14 are arranged at intervals in the width direction X, with a hollow part 15 between them. The shapes of the two connecting parts 14 can be set to be the same, and signal transmission lines and / or power transmission lines are respectively arranged on the two connecting parts 14. Only one light source assembly 20 can be arranged on one base 13.

[0063] Although the flexible circuit board 10 has good bending properties, it is not desirable that the flexible circuit board 10 should bend in just any way in actual use; in particular, bending at certain angles will cause damage to electronic devices on the base parts 13. To avoid this problem, the flexible light strip 100 further comprises multiple reinforcement parts 30, the multiple reinforcement parts being correspondingly arranged on second faces of the multiple base parts 13, the second faces 132 of the base parts 13 being arranged opposite the first faces 131 of the base parts 13. The reinforcement parts 30 may be hard, i.e. the reinforcement parts 30 cannot bend, so that the flexible circuit board 10 only bends via the connecting parts 14, without bending the base parts 13, thus ensuring that the electronic devices on the base parts 13 are not damaged due to bending, the electronic devices for example being the light source assemblies 20, etc. In addition, to improve the heat dissipation performance of the flexible circuit board 10, the reinforcement parts 30 may be designed as metal plates with good heat dissipation performance, in which case the reinforcement parts 30 can effectively improve the heat dissipation performance of the light source assemblies 20.

[0064] In the first embodiment, each light source assembly 20 may comprise a light-emitting diode (LED) and a light source control circuit electrically connected to each other; the light source control circuit is used to control the operation of the LED according to a received control signal. Specifically, the light source assembly 20 is a driven smart LED overall, which may be a single-colour LED or a multi-coloured LED. For example, the LED is an LED emitting red light, so that the flexible light strip 100 can be used as a tail lamp; or the LED is an LED emitting white light, so that the flexible light strip 100 can be used as a daytime running lamp; or the LED is an RGB LED, so that the flexible light strip 100 can be used as an interior decorative lamp.

[0065] In the first embodiment, the connecting part 14 may be used to transmit a control signal Si. For example, between any two adjacent base parts 13, the number of connecting parts 14 is two, with a conductive lead provided on a front face of each of the two connecting parts 14, so that the two connecting parts 14 can be used as two signal lines for CAN communication or Lin communication, and the connecting parts 14 can be used to transmit control signals between the multiple light source assemblies 20. Of course, the present application does not specifically limit the number of connecting parts 14 or the specific positions of the conductive leads. For example, it is also possible for only one connecting part 14 to be included between any two adjacent base parts 13, in which case, conductive leads may be provided on both the front face and a back face of the connecting part 14, so as to transmit control signals.

[0066] In addition, within the range of powers which the conductive leads can withstand, the connecting parts 14 may also be used to transmit power signals; in particular, in certain low-power flexible light strips 100, it is entirely possible for all power signals and control signals to be transmitted through internal wiring of the flexible circuit board 10. However, since the width dimension and thickness dimension of the connecting part 14 are both small, the range of powers which the conductive lead thereon is capable of withstanding is somewhat limited; in some high-power flexible light strips 100, the power of the flexible light strip 100 might exceed the range of powers that the conductive lead is able to withstand.

[0067] In this case, the flexible light strip 100 may be designed to comprise conductive wires 40, the conductive wires 40 being welded to the first faces 131 of the multiple base parts 13; for example, the conductive wires 40 are soldered to pads located on the first faces 131, and the multiple conductive wires 40 are used to transmit power signals to the multiple light source assemblies 20. To ensure that the conductive wires 40 do not affect the bending performance of the flexible light strip 100, the conductive wires 40 may be designed to comprise bending parts 41, the bending parts 41 being similar in shape to the letter C, wherein the C-shaped bending parts 41 can be deformed by elongation or compression. The conductive wires 40 may be conductive leads such as copper wires, aluminium wires or alloy wires, and the conductive wires 40 are two in number, the two conductive wires 40 being respectively soldered to two opposite sides of the multiple light source assemblies 20; one of the two conductive wires 40 is configured to be electrically connected to a power supply positive pole Vin of an external driving circuit 200, and the other is configured to be electrically connected to a power supply negative pole GND of the external driving circuit 200.

[0068] It should be explained that the first embodiment only describes the case where the flexible circuit board 10 is a single flexible circuit board. In other embodiments, the flexible circuit board 10 is multiple flexible circuit boards, wherein each flexible circuit board 10 may have a form similar to that in the first embodiment, and the multiple flexible circuit boards 10 are electrically connected together. To ensure an electrical connection between the flexible circuit board 10 and another flexible circuit board or the external driving circuit 200, the base part 13 located at an end in each flexible circuit board 10 comprises a connector 133; the connector 133 is for example a pad, etc., and the connector 133 may be configured to be electrically connected to the other flexible circuit board or the external driving circuit 200.

[0069] is a main view of a flexible light strip 100 provided in a second embodiment of the present application;is a top view of the flexible light strip 100 shown in;is a partial enlarged schematic drawing B1 of the flexible light strip 100 shown in; andis a partial enlarged schematic drawing B2 of the flexible light strip 100 shown in. As shown in Figs. 7 - 10, the flexible light strip 100 provided in the second embodiment has a similar structure to that of the flexible light strip 100 in the first embodiment, the main difference being that in the first embodiment, the flexible light strip 100 comprises conductive wires 40, and the flexible light strip 100 can be used for a high-power lighting device 500. In the second embodiment, the flexible light strip 100 does not comprise any conductive wires 40, and the flexible light strip 100 is mainly for use in a low-power lighting device 500. The other features of the second embodiment are the same as in the first embodiment; the corresponding description of the first embodiment can be referred to, and is not repeated here.

[0070] is a main view of a flexible light strip 100 provided in a third embodiment of the present application;is a top view of the flexible light strip 100 shown in;is a partial enlarged schematic drawing C of the flexible light strip 100 shown in;is a main view of the flexible light strip 100 shown inin a bent state; andis a top view of the flexible light strip 100 shown inin a bent state.

[0071] As shown in Figs. 11 - 15, in addition to comprising components identical to those in the first embodiment or the second embodiment, the flexible light strip 100 in the third embodiment also comprises a light output layer 50, a light reflection layer 60 and a transparent layer 70. The light output layer 50 is configured to output light emitted by the light source assemblies 20, to form a light pattern in the form of a band or a three-dimensional shape. The light reflection layer 60 is configured to reflect light emitted by the light source assemblies 20 to the light output layer 50, so that the light then emerges through the light output layer 50. The transparent layer 70 is arranged on a side of the flexible circuit board 10 that faces away from the light source assemblies 20. The light output layer 50, the light reflection layer 60 and the transparent layer 70 can form an optical part as a single piece by means of a co-extrusion process, the flexible circuit board 10 and the multiple light source assemblies 20 being accommodated in a space enclosed by the light reflection layer 60, the light output layer 50 and the transparent layer 70. The entire optical part may be made of a silicone rubber material, and has exceptionally good flexibility, so can ensure that the entire flexible light strip 100 has freedom to bend in any way in three-dimensional space. It should be explained that the third embodiment shows a light strip which emits light laterally, i.e. the light output direction of the flexible light strip 100 is perpendicular to the light output direction of the light source assemblies 20; however, in other embodiments, the flexible light strip 100 may be configured to emit light directly, i.e. the light output direction of the flexible light strip 100 is the same as the light output direction of the light source assemblies 20.

[0072] is a structural schematic drawing of a flexible light strip 100 provided in a fourth embodiment of the present application;is a partial structural schematic drawing of the flexible light strip 100 shown in, with an optical part omitted, wherein the flexible light strip 100 comprises a conductive wire 40; andis a partial structural schematic drawing of a variant embodiment of the flexible light strip shown in, with an optical part omitted, wherein the flexible light strip 100 does not comprise a conductive wire.

[0073] As shown in Figs. 16 - 18, the flexible light strip 100 shown in the fourth embodiment is similar to the flexible light strip 100 in the third embodiment, the main difference being that in the fourth embodiment, the base part 13 located at an end comprises an extension part 135; the extension part 135 can bend, and an optical part need not be provided on the extension part 135. This facilitates extension of the flexible circuit board 10 by means of the extension part 135 to a required position, to facilitate electrical connection of the flexible light strip 100 to the external driving circuit 200. The other features in the fourth embodiment are the same as in the third embodiment, and are not repeated here.

[0074] is a structural schematic drawing of a lighting device 500 provided in a fifth embodiment of the present application;is an exploded drawing of the lighting device 500 shown in;is a main view of the lighting device 500 shown in;is a top view of the lighting device 500 shown in; andis a left view of the lighting device 500 shown in.

[0075] As shown in Figs. 19 - 23, the fifth embodiment of the present application provides a lighting device 500; the lighting device 500 may be a vehicle lamp of a motor vehicle, such as a daytime running lamp, position lamp and / or tail lamp, etc. of a motor vehicle. The lighting device 500 may comprise the flexible light strip 100 described in any one of the embodiments above.

[0076] In addition, the lighting device 500 further comprises a hard casing 300; the flexible light strip 100 is arranged in an accommodating groove 310 of the casing 300, a light output part 50 of the flexible light strip 100 faces an opening of the accommodating groove 310, and the hard casing 300 can fix the shape of the flexible light strip 100. The opening of the accommodating groove 310 of the casing 300 has a three-dimensional shape, so the lighting device 500 can maintain a three-dimensional light output pattern. Specifically, as can be seen in, the flexible light strip 100 extends in a horizontal direction H and bends in a vertical direction V. As can be seen in, the flexible light strip 100 extends in the horizontal direction, and bends in the opposite direction to a radial direction L. The lighting device 500 may also comprise a support rear cover 400, and the support rear cover 400 may accommodate an extension part 135.

[0077] It should be explained that the lighting device 500 in the fifth embodiment comprises two flexible light strips 100, the two flexible light strips 100 being vertically stacked close together, so the light output area of the lighting device 500 in the vertical direction can be expanded. In other embodiments, the lighting device may comprise only one flexible light strip, 3 flexible light strips or any other number of flexible light strips; the present application imposes no restrictions on the number of flexible light strips comprised in the lighting device, and does not require that all flexible light strips in the lighting device have the same characteristics.

[0078] Embodiments of the present application also provide a motor vehicle, which may be a new energy vehicle such as a battery electric vehicle, or a fuel vehicle, or a hybrid vehicle. The motor vehicle may comprise the flexible light strip 100 or lighting device 500 described in any one of the embodiments above.

[0079] Although the present application has been explained with reference to the drawings, the embodiments disclosed in the drawings are intended to provide an exemplary explanation of preferred implementations of the present application, and must not be construed as limiting the present application. The dimensional proportions in the drawings are merely schematic, and must not be construed as limiting the present application.

[0080] Although some embodiments of the general concept of the present application have been shown and described, those skilled in the art will understand that the present application may include other equivalent embodiments without departing from the general inventive concept of the present application, and the scope of protection of the present application is defined by the claims.

Claims

Flexible light strip (100), characterized by comprising:a flexible circuit board (10), comprising a first end (11) and a second end (12) arranged opposite each other, the flexible circuit board extending in a length direction (Y) from the first end to the second end, the flexible circuit board comprising multiple base parts (13) and multiple connecting parts (14), the multiple base parts being spaced apart in the length direction, the multiple base parts being connected together by means of the multiple connecting parts, and the multiple base parts and the multiple connecting parts forming a single piece; andmultiple light source assemblies (20), correspondingly arranged on first faces (131) of the multiple base parts (13) and electrically connected to each other by means of the multiple connecting parts.Flexible light strip according to Claim 1, characterized in that the flexible circuit board has freedom to bend in any way in three-dimensional space.Flexible light strip according to Claim 1, characterized in that a thickness of each of the connecting parts is equal to a thickness of the base part;the thickness of each of the connecting parts is less than or equal to 0.5 mm, or less than or equal to 0.3 mm,the thickness of each of the base parts is less than or equal to 0.5 mm, or less than or equal to 0.3 mm.Flexible light strip according to Claim 1, characterized in that there is a hollow part (15) between adjacent said base parts, and the connecting part has freedom to deform towards the hollow part,wherein the connecting part is S-shaped, wave-shaped or C-shaped.Flexible light strip according to Claim 4, characterized in that a width of each of the connecting parts is less than 1 / 2 of a width of the base part, and less than 2 mm.Flexible light strip according to Claim 1, characterized in that the flexible light strip further comprises multiple hard reinforcement parts (30), the multiple reinforcement parts being correspondingly arranged on second faces (132) of the multiple base parts, the second faces of the base parts being arranged opposite the first faces of the base parts.Flexible light strip according to Claim 1, characterized in that each of the light source assemblies comprises an LED and a light source control circuit electrically connected to each other;the light source control circuit being configured to control the operation of the LED according to a received control signal.Flexible light strip according to any one of Claims 1 - 7, characterized in that the connecting part is configured to transmit a control signal and / or a power signal.Flexible light strip according to any one of Claims 1 - 7, characterized in that the flexible light strip further comprises conductive wires (40) soldered to the first faces (131) of the multiple base parts, the multiple conductive wires being configured to transmit a power signal to the multiple light source assemblies.Flexible light strip according to Claim 9, characterized in that the conductive wires comprise bending parts (41), and the conductive wires are two in number, the two conductive wires being respectively soldered to two opposite sides of the multiple light source assemblies; one of the two conductive wires is configured to be electrically connected to a power supply positive pole (Vin) of an external driving circuit (200), and the other is configured to be electrically connected to a power supply negative pole (GND) of the external driving circuit (200).Flexible light strip according to any one of Claims 1 - 7, characterized in that the flexible circuit board is a single flexible circuit board; orthe flexible circuit board is multiple flexible circuit boards electrically connected together;the base part located at an end in each of the flexible circuit boards comprises a connector (133), which is configured to be electrically connected to another of the flexible circuit boards or an external driving circuit (200).Flexible light strip according to any one of Claims 1 - 7, characterized in that the flexible light strip further comprises a light output layer (50), configured to output light emitted by the light source assemblies;a light reflection layer (60), configured to reflect light emitted by the light source assemblies (20) to the light output layer;a transparent layer (70), arranged on a side of the flexible circuit board that faces away from the light source assemblies;the light output layer, the light reflection layer and the transparent layer are integrally formed by a co-extrusion process, the flexible circuit board and the multiple light source assemblies being accommodated in a space enclosed by the light reflection layer, the light output layer and the transparent layer.Lighting device (500), characterized in that the lighting device comprises the flexible light strip according to any one of Claims 1 - 12.Lighting device according to Claim 13, characterized in that the lighting device further comprises a hard casing (300), the flexible light strip being arranged in the casing and maintaining a three-dimensional light output pattern.Motor vehicle, characterized in that the motor vehicle comprises the flexible light strip according to any one of Claims 1 - 12, or the lighting device according to any one of Claims 13 - 14.

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