Cascade lamp strip and lighting device

Abstract

The utility model relates to a cascade lamp strip and a lighting device. The cascade lamp strip comprises a primary lamp strip unit and at least one secondary lamp strip unit. The primary lamp strip unit comprises a primary power adapter and a primary lamp strip which are connected with each other; the secondary lamp strip unit comprises a secondary power adapter, a secondary lamp strip and a secondary connector; the secondary lamp strip is respectively connected with the secondary power adapter and the previous stage of lamp strip unit through the secondary connector; and the lamp strip unit which is connected firstly is the lamp strip unit of the previous stage of the lamp strip unit which is connected later. According to the cascade lamp strip, the secondary power adapter can directly connect the secondary lamp strip units connected later with the external power supply to supplement power for the secondary lamp strip units, voltage drop generated on a series circuit is reduced, the length of the lamp strip and normal work of the light-emitting units are both expanded, and the cascade lamp strip is simple in overall structure, lower in device cost and convenient to use. The structure of the lamp strip is correspondingly simplified; and the cost of the lamp strip is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of lighting products, and in particular to a cascade light strip and a lighting device. Background Art

[0002] Light strips are common lighting products in people's daily lives.

[0003] In the related art, a plurality of light strips are usually connected in series to extend the length of the light strip, and a boost circuit is used to reduce the voltage drop caused by the plurality of light strips connected in series, so that the light-emitting units in each light strip can work normally.

[0004] However, the light strip equipped with the boost circuit in the related art has a complex structure and high cost. Utility Model Content

[0005] Based on this, it is necessary to provide a cascade light strip and a lighting device to address the above technical problems.

[0006] In a first aspect, the present application provides a cascade light strip, comprising:

[0007] A primary light strip unit and at least one secondary light strip unit; the primary light strip unit includes a primary power adapter and a primary light strip connected to each other; the secondary light strip unit includes a secondary power adapter, a secondary light strip and a secondary connector; the secondary light strip is respectively connected to the secondary power adapter and the upper light strip unit through the secondary connector; the light strip unit connected first is the upper light strip unit of the light strip unit connected later.

[0008] In one embodiment, the secondary connector includes a first interface connected to the upper-level light strip unit, a second interface connected to the secondary light strip, and a third interface connected to the secondary power adapter.

[0009] In one embodiment, the first interface includes a signal line and a ground line; the second interface includes a signal line, a ground line and a power line; and the third interface includes a ground line and a power line.

[0010] In one embodiment, the first interface includes a signal line, a ground line and a power line; the second interface includes a signal line, a ground line and a power line; and the third interface includes a ground line and a power line.

[0011] In one embodiment, the primary light strip unit further includes a controller; the controller is connected to the primary power adapter and the primary light strip.

[0012] In one embodiment, both the primary light strip and the secondary light strip include a plurality of light-emitting units connected in series; the light-emitting units include a driving chip and a light-emitting diode connected to the driving chip.

[0013] In one embodiment, the driving chip includes a power pin, a ground pin and a color channel pin; the light emitting diodes are connected to the power pin and the color channel pin respectively.

[0014] In one embodiment, there are three light emitting diodes connected to the driving chip, corresponding to R, G, and B channels respectively; the color channel pins include an R channel pin, a G channel pin, and a B channel pin.

[0015] In one embodiment, the driver chip further includes a signal input pin and a signal output pin.

[0016] In a second aspect, the present application also provides a lighting device, comprising any of the above-mentioned cascade light strips.

[0017] In the above-mentioned cascade light strip and lighting device, the cascade light strip includes a primary light strip unit and at least one secondary light strip unit; the primary light strip unit includes a primary power adapter and a primary light strip connected to each other; the secondary light strip unit includes a secondary power adapter, a secondary light strip and a secondary connector; the secondary light strip is connected to the secondary power adapter and the upper light strip unit respectively through the secondary connector; the light strip unit connected first is the upper light strip unit of the light strip unit connected later. In the above-mentioned cascade light strip, the secondary power adapter can directly connect the secondary light strip unit connected later to the external power supply to supplement the power of the secondary light strip unit, reduce the voltage drop generated in the series circuit, take into account the extension of the light strip length and the normal operation of the light-emitting unit, and the overall structure is simple, the device cost is lower, and the light strip structure is correspondingly simplified and the light strip cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application and cannot be understood as any limitation to the present invention. For those of ordinary skill in the art, other embodiments and drawings corresponding to other embodiments can also be obtained based on these drawings.

[0019] FIG1 is a schematic diagram of the structure of a cascade light strip in one embodiment;

[0020] FIG2 is a schematic diagram of the structure of a cascade light strip in another embodiment;

[0021] FIG3 is a schematic diagram of the structure of a cascade light strip in another embodiment;

[0022] FIG4 is a schematic diagram of the structure of a secondary connector in one embodiment;

[0023] FIG5 is a schematic structural diagram of a secondary connector in another embodiment;

[0024] FIG6 is a schematic structural diagram of the internal circuit arrangement of a secondary connector in one embodiment;

[0025] FIG7 is a schematic structural diagram of the internal circuit arrangement of the secondary connector in another embodiment;

[0026] FIG8 is a schematic structural diagram of a primary light strip unit in one embodiment;

[0027] FIG9 is a schematic structural diagram of a light-emitting unit in a light strip unit in one embodiment;

[0028] FIG. 10 is a schematic diagram of the structure of a driving chip and a light emitting diode in a light emitting unit in one embodiment.

[0029] Description of reference numerals:

[0030] 100——Cascade light strip;

[0031] 110——Main level light strip unit;

[0032] 111 – Mains power adapter;

[0033] 112——Main level light strip;

[0034] 113——Controller;

[0035] 120——Secondary light strip unit;

[0036] 121 – Secondary power adapter;

[0037] 122 – secondary light strip;

[0038] 123 – Secondary connector;

[0039] 1231——first interface;

[0040] 1232——Second interface;

[0041] 1233——the third interface;

[0042] 10——light-emitting unit;

[0043] 101——driver chip;

[0044] 102——Light Emitting Diode. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for fixing as well as for coupling or communication.

[0047] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements that are not clearly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical or equivalent elements in the process, method, article or equipment including the elements. In addition, the terms "upper", "lower", "top", "bottom" etc. do not constitute absolute spatial relationship restrictions, but are only relative concepts.

[0048] Light strips are common lighting products in people's daily lives.

[0049] In the related art, a plurality of light strips are usually connected in series to extend the length of the light strip, and a boost circuit is used to reduce the voltage drop caused by the plurality of light strips connected in series, so that the light-emitting units in each light strip can work normally.

[0050] However, the light strip equipped with the boost circuit in the related art has a complex structure and high cost.

[0051] The present application provides a cascade light strip. FIG1 is a schematic structural diagram of the cascade light strip. The cascade light strip 100 includes: a primary light strip unit 110 and at least one secondary light strip unit 120 .

[0052] As shown in FIG1 , the primary light strip unit 110 includes a primary power adapter 111 and a primary light strip 112 connected to each other. The secondary light strip unit 120 includes a secondary power adapter 121, a secondary light strip 122, and a secondary connector 123; the secondary light strip 122 is respectively connected to the secondary power adapter 121 and the upper light strip unit through the secondary connector 123; the light strip unit connected first is the upper light strip unit of the light strip unit connected later.

[0053] The cascade light strip 100 includes at least two light strip units connected in sequence. FIG. 1 exemplarily shows a cascade light strip 111 including a primary light strip unit 110 and a secondary light strip unit 120 .

[0054] In two adjacent light strip units in the cascade light strip 100 , the light strip unit connected first is the upper level light strip unit of the light strip unit connected later, and the light strip unit connected later is the lower level light strip unit of the light strip unit connected first.

[0055] Exemplarily, as shown in FIG1 , the primary light strip unit 110 is the upper level light strip unit of the secondary light strip unit 120, and the secondary light strip unit 120 is the lower level light strip unit of the primary light strip unit 110. FIG2 exemplarily shows a cascade light strip including a primary light strip unit 110 and two secondary light strip units 120. As shown in FIG2 , three light strip units L1, L2, and L3 are sequentially connected in the cascade light strip 100. L1 is the upper level light strip unit of L2, and L2 is the lower level light strip unit of L1; L2 is the upper level light strip unit of L3, and L3 is the lower level light strip unit of L2.

[0056] Next, each part of the cascade light strip 100 is described in detail:

[0057] The primary light strip unit 110 is a light strip unit directly connected to an external power source via a power adapter. As shown in FIG1 , the primary light strip unit 110 includes a primary power adapter 111 and a primary light strip 112 that are connected to each other.

[0058] The primary power adapter 111 is used to connect an external power source to power the primary light strip 112. The primary light strip 112 is a light-emitting body in the primary light strip unit 110, including at least one light-emitting unit, which can emit light when powered. Exemplarily, the primary power adapter 111 can transform, rectify, filter, stabilize, and other processes on the electrical signal input by the external power source to provide an adapted electrical signal to the primary light strip 112.

[0059] The secondary light strip unit 120 is an extended light strip unit for expanding the overall structure of the light strip. As shown in FIG1 , the secondary light strip unit 120 includes a secondary power adapter 121, a secondary light strip 122, and a secondary connector 123. The secondary connector 123 can connect the secondary light strip 122 to the upper light strip unit to achieve connection between the light strip units, and connect to the secondary power adapter 121 to achieve access to an external power source.

[0060] The secondary power adapter 121 is used to connect an external power source to power the secondary light strip 122. The secondary light strip 122 is a light-emitting body in the secondary light strip unit 120, including at least one light-emitting unit, which can emit light when powered. The secondary connector 123 can also be called an interface integrator (connector), including multiple interfaces, which are used to connect between devices and realize signal transmission.

[0061] Optionally, the primary power adapter 111 and the secondary power adapter 121 can be the same or different, and can be adapted to the connected light strip unit. Similarly, the primary light strip 112 and the secondary light strip 122 can be the same or different.

[0062] Optionally, the primary light strip 112 and the secondary light strip 122 may be flexible light strips that can be bent freely, or may be rigid light strips that cannot be bent freely. The light-emitting units in the primary light strip 112 and the secondary light strip 122 are used to emit light when powered. Exemplarily, the light-emitting units may include incandescent lamps, fluorescent lamps, or light-emitting diodes (LEDs). In this embodiment, the type and quantity of the light-emitting units are not specifically limited, and actual design requirements can be met.

[0063] Optionally, as shown in FIGS. 1 and 2 , the primary light strip unit 110 and each secondary light strip unit 120 may be sequentially connected through a secondary connector 123 to obtain a cascade light strip 100 with an extended light strip length. As shown in FIG. 3 , a plurality of secondary light strips 122 may be connected in parallel using a shared secondary connector 123 to obtain a cascade light strip 100 with an extended light strip shape.

[0064] The working process of the cascade light strip 100 is as follows:

[0065] The primary power adapter 111 in the primary light strip unit 110 connects the external power supply to the primary light strip 112 to power the light-emitting units in the primary light strip 112. In order to extend the length of the light strip, when the secondary light strip unit 120 is directly connected in series with the primary light strip unit 110, based on the series voltage division principle, the voltage generated by the external power supply in the series circuit will decrease step by step. The more secondary light strip units 120 are connected in series, the more voltage drop is generated. When the voltage drop increases to a certain extent, so that the voltage of the secondary light strip unit 120 connected to a certain level is less than the lower limit voltage of the normal operation of the light-emitting unit, it will affect the normal operation (i.e., light emission) of this part of the light-emitting unit, such as dimming or no light emission.

[0066] In order to simultaneously achieve the extension of the light strip length and the normal operation of the light-emitting unit, as shown in Figure 1, the primary power adapter 111 in the primary light strip unit 110 connects the external power supply to the primary light strip 112, and while powering the light-emitting unit in the primary light strip 112, the primary light strip unit 110 is connected to the secondary light strip unit 120 through the secondary connector 123 in the secondary light strip unit 120, and the secondary light strip 122 in the secondary light strip unit 120 is directly connected to the external power supply, so as to supplement the power for the secondary light strip unit 120 connected later, thereby reducing the voltage drop, so that the light-emitting unit in the secondary light strip unit 120 connected later can work normally.

[0067] In the embodiment of the present application, the cascade light strip provided includes: a primary light strip unit and at least one secondary light strip unit; the primary light strip unit includes a primary power adapter and a primary light strip connected to each other; the secondary light strip unit includes a secondary power adapter, a secondary light strip and a secondary connector; the secondary light strip is connected to the secondary power adapter and the upper light strip unit respectively through the secondary connector. In the above cascade light strip, the secondary power adapter can directly connect the secondary light strip unit connected later to the external power supply to supplement the power of the secondary light strip unit, reduce the voltage drop generated in the series circuit, take into account the extension of the light strip length and the normal operation of the light-emitting unit, and the overall structure is simple, the device cost is lower, and the light strip structure is correspondingly simplified and the light strip cost is reduced.

[0068] To achieve multi-terminal connection, the secondary connector 123 includes at least three interfaces. As shown in FIG. 4 , the secondary connector 123 includes a first interface 1231 connected to the upper level light strip unit, a second interface 1232 connected to the secondary light strip 122 , and a third interface 1233 connected to the secondary power adapter 121 .

[0069] Exemplarily, the secondary connector 123 may include three interfaces, in the form of a T-shaped connector as shown in FIG. 4, to be respectively connected to the upper-level light strip unit, one secondary light strip 122, and the secondary power adapter 121. The secondary connector 123 may also include four interfaces, in the form of a cross-shaped connector as shown in FIG. 5, to be respectively connected to the upper-level light strip unit, two secondary light strips 122, and the secondary power adapter 121. The secondary connector 123 may also include other structural forms to include more interfaces.

[0070] In the embodiment of the present application, in the provided cascade light strip, the secondary connector includes a first interface connected to the upper light strip unit, a second interface connected to the secondary light strip, and a third interface connected to the secondary power adapter. In the above cascade light strip, the secondary connector including three interfaces can not only realize multi-terminal connection, but also has a conventional existing structure, does not need to be customized, and also reduces the cost of the light strip.

[0071] In an optional embodiment, the secondary connector 123 may be a power signal of an external power source directly connected to the secondary light strip 122, without being connected to a power signal of an upper-level light strip unit.

[0072] Taking the secondary connector 123 including three interfaces as an example, as shown in FIG6 , the first interface 1231 includes a signal line and a ground line; the second interface 1232 includes a signal line, a ground line and a power line; and the third interface 1233 includes a ground line and a power line.

[0073] Among them, the signal line (Signal) is the transmission line of the control signal, the bottom line (GND) is the ground transmission line, and the power line (VCC) is the transmission line of the power signal.

[0074] The signal lines in the first interface 1231 and the second interface 1232 are connected. The first interface 1231 can input the control signal connected through the upper-level light strip unit into the second interface 1232, and then the second interface 1232 outputs it to the secondary light strip 122. The ground lines in the first interface 1231, the second interface 1232 and the third interface 1233 are connected to ground the two connected light strip units. The third interface 1233 is connected to the power line in the second interface 1232. The third interface 1231 can input the power signal connected through the secondary unit adapter 121 into the second interface 1232, and then the second interface 1232 outputs it to the secondary light strip 122.

[0075] In the embodiment of the present application, in the provided cascade light strip, the first interface in the secondary connector includes a signal line and a ground line; the second interface includes a signal line, a ground line and a power line; the third interface includes a ground line and a power line. In the above cascade light strip, based on the line arrangement between the interfaces in the secondary connector, the secondary light strip can be directly connected to an external power supply, thereby reducing the voltage drop caused by the series connection of the light strip units, so that the light-emitting units in each of the secondary light strip units connected later can all work normally, so as to support the infinite cascading of the entire cascade light strip.

[0076] In an optional embodiment, the secondary connector 123 can be a power signal of an external power source directly connected to the secondary light strip 122, and synchronously connected to the power signal of the upper-level light strip unit.

[0077] Also taking the secondary connector 123 including three interfaces as an example, as shown in FIG7 , the first interface 1231 includes a signal line, a ground line and a power line; the second interface 1232 includes a signal line, a ground line and a power line; and the third interface 1233 includes a ground line and a power line.

[0078] The signal lines in the first interface 1231 and the second interface 1232 are connected. The first interface 1231 can input the control signal output by the upper-level light strip unit to the second interface 1232, and then the second interface 1232 outputs it to the secondary light strip 122. The ground lines in the first interface 1231, the second interface 1232 and the third interface 1233 are connected to ground the two connected light strip units. The power lines in the first interface 1231, the second interface 1232 and the third interface 1233 are connected.

[0079] Optionally, the third interface 1233 can input the power signal connected through the secondary unit adapter 121 into the first interface 1231 and the second interface 1232 respectively, output it to the primary light strip 112 in the primary light strip unit 110 through the first interface 1231, and output it to the secondary light strip 122 through the second interface 1232; the third interface 1233 can also input the power signal connected through the secondary unit adapter 121 into the second interface 1232, and output it to the secondary light strip 122 through the second interface 1232. At the same time, the first interface 1231 also inputs the power signal connected through the primary unit adapter 111 into the second interface 1232, and outputs it to the secondary light strip 122 through the second interface 1232.

[0080] In the embodiment of the present application, in the cascade light strip provided, the first interface in the secondary connector includes a signal line, a ground line and a power line; the second interface includes a signal line, a ground line and a power line; the third interface includes a ground line and a power line. In the above cascade light strip, the line arrangement between the interfaces in the secondary connector can not only directly connect the secondary light strip to an external power source for power supply, but also compensate for the voltage drop of the upper level light strip unit, so that the light-emitting units in all the light strip units in the cascade light strip can work normally, and also support the infinite cascading of the entire cascade light strip.

[0081] In order to improve the diversity and intelligence of the light strip display, in one embodiment, as shown in FIG. 8 , the primary light strip unit 110 further includes a controller 113 .

[0082] The controller 113 is connected to the primary power adapter 111 and the primary light strip 112 .

[0083] The controller 113 is used to generate a control signal to perform display control on the cascade light strip 100 .

[0084] Optionally, the controller 113 may communicate with an external terminal to generate a corresponding control signal under the instruction of the external terminal. Exemplarily, the control signal may be a high-level signal for controlling the light-emitting units in each level of the light strip unit in the cascade light strip 100 to be powered on and illuminated. The control signal may also be an alternating indication signal for controlling the light-emitting units in each level of the light strip unit in the cascade light strip 100 to be powered on and illuminated alternately according to a preset logic. For example, the cascade light strip 100 includes a light strip unit A and a light strip unit B connected, and the alternating indication signal may control the light strip unit A and the light strip unit B to be powered on and illuminated alternately, and may also control each light-emitting unit in the light strip unit A and the light strip unit B to be powered on and illuminated alternately.

[0085] It should be noted that the control signal can be transmitted between the light strip units based on the signal lines in the first interface 1231 and the second interface 1232 in the secondary connector 123 .

[0086] In the embodiment of the present application, in the provided cascade light strip, the main light strip unit further comprises a controller; the controller is connected to the main power adapter and the main light strip. In the above cascade light strip, based on the controller in the main light strip unit, diversified control of each light strip unit in the cascade light strip can be achieved, thereby improving the diversification and intelligence of the light strip display.

[0087] In one embodiment, as shown in FIG9 , the primary light strip 112 and the secondary light strip 122 each include a plurality of light emitting units 10 connected in series. The light emitting unit 10 includes a driver chip 101 and a light emitting diode 102 connected to the driver chip 101 .

[0088] The driver chip 101 is used to drive the light emitting diode 102 to emit light. LED has multiple advantages such as small size, low energy consumption, long service life, high brightness, low heat, non-toxic and environmentally friendly, and durable.

[0089] Optionally, the primary light strip 112 and the secondary light strip 122 may include the same number of light emitting units 10, or different numbers of light emitting units 10. The more light emitting units 10 are included, the longer the length of the corresponding cascade light strip 100 is.

[0090] Exemplarily, the primary light strip 112 and the secondary light strip 122 each include m light-emitting units, and the corresponding length is M; the primary light strip 112 is connected in sequence with one secondary light strip 122, and the length of the cascade light strip 100 formed is 2M; the primary light strip 112 is connected in sequence with two secondary light strips 122, and the length of the cascade light strip 100 formed is 3M; …; the primary light strip 112 is connected in sequence with N secondary light strips 122, and the length of the cascade light strip 100 formed is (N+1)M.

[0091] In the embodiment of the present application, in the provided cascade light strip, both the primary light strip and the secondary light strip include a plurality of light-emitting units connected in series; the light-emitting unit includes a driver chip and a light-emitting diode connected to the driver chip. In the above cascade light strip, based on the primary light strip and the secondary light strip including a plurality of light-emitting units connected in series to achieve the extension of the light strip length, LEDs are used to form the light-emitting units in the primary light strip and the secondary light strip, and the comprehensive performance of the formed cascade light strip can be improved based on the multiple advantages of LEDs.

[0092] In order to realize different luminous colors of the luminous unit, in one embodiment, as shown in FIG. 10 , the driving chip 101 includes a power pin, a ground pin and a color channel pin.

[0093] The light emitting diodes 102 are connected to the power pins and the color channel pins respectively.

[0094] The power pin (VIN) is used to connect the power signal to the light emitting diode 102 , the ground pin (GND) is used to ground the light emitting diode 102 , and the color channel pin (LEDn) is used to connect the light emitting diodes 102 corresponding to different color channels.

[0095] In an optional embodiment, as shown in FIG. 10 , the number of light emitting diodes 102 connected to the driver chip 101 includes three, corresponding to R, G, and B channels respectively; the color channel pins 1013 include an R channel pin, a G channel pin, and a B channel pin.

[0096] The light emitting diode 102 connected to the R channel pin is used to emit red light (Red), the light emitting diode 102 connected to the G channel pin is used to emit green light (Green), and the light emitting diode 102 connected to the B channel pin is used to emit blue light (Blue).

[0097] As shown in FIG. 10 , the driver chip 101 further includes a signal input pin (DIN) and a signal output pin (DOUT).

[0098] Among them, the signal input pin and the signal output pin are used to transmit control signals.

[0099] The driver chip 101 can control the input signals of the R channel pin, the G channel pin and the B channel pin based on the control signal inputted by the signal input pin, so as to adjust the color grayscale of the light emitting diode 102 respectively connected to the R channel pin, the G channel pin and the B channel pin, thereby realizing the control of the light color of the entire light emitting unit 10. Among them, the three colors of red, green and blue can present different colors under the combination of different color grayscales.

[0100] The signal output pin can transmit the control signal input by the signal input pin to the next light emitting unit 10 , so as to control the light color of the next light emitting unit 10 .

[0101] It should be noted that the control signal transmitted by the above-mentioned signal input pin and signal output pin may be a control signal generated by the controller 113 in the primary light strip unit 110. The control signal generated by the controller 113 is transmitted to the signal input pin on the driving chip 101 of the light-emitting unit 10 in the primary light strip 112, acts on each light-emitting diode 102 to emit light, and is transmitted to the next light strip unit, i.e., the secondary light strip unit 120, through the signal output pin. Then, the control signal is transmitted to the signal input pin on the driving chip 101 of the light-emitting unit 10 in the secondary light strip 122 through the secondary connector 123 in the secondary light strip unit 120, acts on each light-emitting diode 102 to emit light, and is transmitted to the next light strip unit through the signal output pin, thereby transmitting step by step.

[0102] In the embodiment of the present application, in the provided cascade light strip, the driving chip in the light-emitting unit includes a power pin, a ground pin and a color channel pin; the light-emitting diodes are connected to the power pin and the color channel pin, respectively. Among them, there are three light-emitting diodes connected to the driving chip, corresponding to the R, G, and B channels, respectively; the color channel pins include an R channel pin, a G channel pin and a B channel pin; the driving chip also includes a signal input pin and a signal output pin. In the above-mentioned cascade light strip, the light-emitting color of the light-emitting unit is controlled based on the color channel pins corresponding to different colors in the driving chip, which helps to realize the color change of the light-emitting unit and improve the diversity of the light-emitting colors of the formed cascade light strip.

[0103] In one of the embodiments, the present application further provides a lighting device, including a cascade light strip 100 .

[0104] As shown in FIGS. 1 to 10 , the cascade light strip 100 includes:

[0105] A primary light strip unit 110 and at least one secondary light strip unit 120; the primary light strip unit 110 includes a primary power adapter 111 and a primary light strip 112 connected to each other; the secondary light strip unit 120 includes a secondary power adapter 121, a secondary light strip 122 and a secondary connector 123; the secondary light strip 122 is respectively connected to the secondary power adapter 121 and the upper-level light strip unit through the secondary connector 123; the light strip unit connected first is the upper-level light strip unit of the light strip unit connected later.

[0106] In one embodiment, the secondary connector 123 includes a first interface 1231 connected to the upper-level light strip unit, a second interface 1232 connected to the secondary light strip 122 , and a third interface 1233 connected to the secondary power adapter 121 .

[0107] In one embodiment, the first interface 1231 includes a signal line and a ground line; the second interface 1232 includes a signal line, a ground line, and a power line; and the third interface 1233 includes a ground line and a power line.

[0108] In one embodiment, the first interface 1231 includes a signal line, a ground line, and a power line; the second interface 1232 includes a signal line, a ground line, and a power line; and the third interface 1233 includes a ground line and a power line.

[0109] In one embodiment, the primary light strip unit 110 further includes a controller 113 ; the controller 113 is connected to the primary power adapter 111 and the primary light strip 112 .

[0110] In one embodiment, the primary light strip 112 and the secondary light strip 122 each include a plurality of light-emitting units 10 connected in series; the light-emitting unit 10 includes a driver chip 101 and a light-emitting diode 102 connected to the driver chip 101 .

[0111] In one embodiment, the driver chip 101 includes a power pin, a ground pin and a color channel pin 1013; the light emitting diode 102 is connected to the power pin and the color channel pin respectively.

[0112] In one embodiment, the light emitting diodes 102 connected to the driving chip 101 include three, corresponding to the R, G, and B channels respectively; the color channel pins include an R channel pin, a G channel pin, and a B channel pin.

[0113] In one embodiment, the driver chip 101 further includes a signal input pin and a signal output pin.

[0114] Optionally, the lighting device may further include a light-transmitting housing to encapsulate the cascade light strip 100 in the light-transmitting housing. Exemplarily, a light-homogenizing film is further provided on the inner surface of the light-transmitting housing to evenly distribute the light generated by the cascade light strip 100. For example, the light-homogenizing film may be a polyethylene terephthalate (PET) film or a polycarbonate (PC) film.

[0115] It should be noted that the lighting device provided in this embodiment includes the cascade light strip 100 in any of the above embodiments, and the specific structure and functions that can be achieved are the same.

[0116] The above content is a further detailed description of the utility model in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, it can also make several substitutions or modifications to these described embodiments, and these substitutions or modifications should be regarded as belonging to the protection scope of the utility model. In the description of this specification, the description of the reference terms "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A cascade light strip, characterized in that: The cascade light strip (100) comprises: a primary light strip unit (110) and at least one secondary light strip unit (120); the primary light strip unit (110) comprises a primary power adapter (111) and a primary light strip (112) which are connected to each other; the secondary light strip unit (120) comprises a secondary power adapter (121), a secondary light strip (122) and a secondary connector (123); the secondary light strip (122) is respectively connected to the secondary power adapter (121) and the upper-level light strip unit via the secondary connector (123); the light strip unit connected first is the upper-level light strip unit of the light strip unit connected later.

2. The cascade light strip according to claim 1, characterized in that: The secondary connector (123) comprises a first interface (1231) connected to the upper-level light strip unit, a second interface (1232) connected to the secondary light strip (122), and a third interface (1233) connected to the secondary power adapter (121).

3. The cascade light strip according to claim 2, characterized in that: The first interface (1231) includes a signal line and a ground line; the second interface (1232) includes the signal line, the ground line and a power line; and the third interface (1233) includes the ground line and the power line.

4. The cascade light strip according to claim 2, characterized in that: The first interface (1231) includes a signal line, a ground line and a power line; the second interface (1232) includes the signal line, the ground line and the power line; and the third interface (1233) includes the ground line and the power line.

5. The cascade light strip according to any one of claims 1 to 4, characterized in that: The primary light strip unit (110) further comprises a controller (113); the controller (113) is connected to the primary power adapter (111) and the primary light strip (112).

6. The cascade light strip according to any one of claims 1 to 4, characterized in that: The primary light strip (112) and the secondary light strip (122) both comprise a plurality of light-emitting units (10) connected in series; the light-emitting unit (10) comprises a driving chip (101) and a light-emitting diode (102) connected to the driving chip (101).

7. The cascade light strip according to claim 6, characterized in that: The driving chip (101) comprises a power pin, a ground pin and a color channel pin; the light emitting diode (102) is connected to the power pin and the color channel pin respectively.

8. The cascade light strip according to claim 7, characterized in that: The light emitting diodes (102) connected to the driving chip (101) include three, corresponding to the R, G, and B channels respectively; the color channel pins include an R channel pin, a G channel pin, and a B channel pin.

9. The cascade light strip according to claim 7, characterized in that: The driving chip (101) further comprises a signal input pin and a signal output pin.

10. A lighting device, characterized in that: Comprising the cascade light strip (100) as claimed in any one of claims 1 to 9.

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