A lighting device

Abstract

The application provides a lighting device, comprising a plurality of mutually electrically connected lighting units, each lighting unit comprising a light source and a first power conversion module, the first power conversion module comprising a first input end and a first output end, the first output end being connected with the light source; wherein the first power conversion module is used for converting the voltage of the first input end into the working voltage of the light source and outputting to the light source through the first output end. In the application, the corresponding power conversion module is added in each lighting unit, so that the brightness of the plurality of lighting units can be kept consistent when the product is spliced with more lighting units.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and more particularly to a lighting device. Background Technology

[0002] In existing lighting devices with multiple lighting units, there is a problem of inconsistent lighting brightness among the multiple lighting units during use, which cannot meet the needs of users. Summary of the Invention

[0003] To overcome the problems existing in related technologies, the present invention proposes a lighting device, comprising:

[0004] Multiple interconnected lighting units, each lighting unit including a light source and a first power conversion module, the first power conversion module including a first input terminal and a first output terminal, the first output terminal being connected to the light source;

[0005] The first power conversion module is used to convert the voltage at the first input terminal into the operating voltage of the light source, and output it to the light source through the first output terminal.

[0006] In the above technical solution, the voltage at the first input terminal is less than the operating voltage of the light source, and the first power conversion module includes a boost circuit for boosting the voltage at the first input terminal to the operating voltage of the light source; or

[0007] The voltage at the first input terminal is greater than the operating voltage of the light source. The first power conversion module includes a step-down circuit for reducing the voltage at the first input terminal to the operating voltage of the light source.

[0008] In the above technical solution, the light source in at least one lighting unit includes a plurality of light-emitting units, and each group of light-emitting units includes at least one light-emitting element;

[0009] The number of first power conversion modules corresponds one-to-one with the number of light-emitting units, and each first power conversion module's first output terminal is connected to a set of light-emitting units.

[0010] In the above technical solution, the lighting equipment also includes a control box, which includes a control module. Each lighting unit includes a microprocessor and a drive module connected to the microprocessor. The drive module of the same lighting unit is electrically connected to the light source. The microprocessor of each lighting unit is connected to the control module. The microprocessor receives signals from the control module and controls the drive module to drive the light source to emit light according to the signals. The drive module is a constant current drive module.

[0011] In the above technical solution, within the same lighting unit, the light source includes multiple groups of light-emitting units, each group of light-emitting units includes at least one light-emitting element, and the constant current drive module is electrically connected to each group of light-emitting units.

[0012] In the above technical solution, the lighting equipment also includes a second power conversion module. The second power conversion module includes a second input terminal and a second output terminal. The second output terminal is connected to the communication module and is used to convert the voltage of the second input terminal into the operating voltage of the communication module and output it to the communication module through the second output terminal.

[0013] In the above technical solution, the control box is provided with a connection port, the lighting unit is electrically connected to the control box at the connection port, and is also magnetically connected to the control box at the connection port.

[0014] In the above technical solution, the multiple lighting units include a first lighting unit and a second lighting unit. The first lighting unit includes a first port, and the second lighting unit includes a second port. The first port and the second port are electrically connected and magnetically attracted to each other.

[0015] In the above technical solution, one of the first lighting unit and the second lighting unit includes a protrusion and the other includes a recess. One of the protrusion and the recess forms a first port and the other forms a second port. In the magnetic adsorption connection state, the protrusion is housed in the recess.

[0016] In the above technical solution, the first port of the first lighting unit includes a first conductive part and a first magnetic part, and the second port of the second lighting unit includes a second conductive part and a second magnetic part, and the first magnetic part and the second magnetic part are connected by adsorption.

[0017] The first magnetic attraction part includes a first part and a second part that are separated from each other, with a gap between the first part and the second part. The first conductive part is disposed in the gap, and the second conductive part is directly opposite the first conductive part.

[0018] In the above technical solution, the lighting equipment also includes:

[0019] The first power line carrier module is used to transmit data with multiple lighting units. The first power line carrier module is installed in the control box and is connected to the control module and communication module of the control box. The communication module is used to receive external signals and send external signals to the first power line carrier module.

[0020] The second power line carrier module is used to transmit data with the control box. The second power line carrier module is installed on at least one of the multiple lighting units and is electrically connected to the microprocessor and constant current drive module in the lighting unit.

[0021] In the above technical solution, the first power line carrier module includes:

[0022] The first modem is connected to the control module and / or the communication module;

[0023] The first line tuner is connected to the first modem;

[0024] The first band-stop filter is connected to the first line tuner and to the connection port of the control box;

[0025] The second power line carrier module includes:

[0026] A second modem, connected to the microprocessor;

[0027] The second line tuner is connected to the second modem;

[0028] The second band-stop filter is connected to the second line tuner and to either the first or second port.

[0029] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0030] 1. In this embodiment of the invention, a corresponding power conversion module is added to each lighting unit, so that the brightness of the lighting units can remain consistent when more lighting units are spliced ​​together. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0032] Figure 1 This is a schematic diagram of the system power supply design for an embodiment of the lighting device of the present invention;

[0033] Figure 2 This is a schematic diagram of the circuit structure of the power conversion module in an embodiment of the lighting equipment of the present invention;

[0034] Figure 3 This is a schematic diagram of the lighting unit drive in an embodiment of the lighting device of the present invention;

[0035] Figure 4 This is a schematic diagram of the circuit structure of the level conversion module in an embodiment of the lighting equipment of the present invention;

[0036] Figure 5 This is a schematic diagram of the combination of multiple different module lighting units in an embodiment of the lighting device of the present invention;

[0037] Figure 6 This is a schematic diagram showing the connection of multiple module lighting units in an embodiment of the lighting device of the present invention;

[0038] Figure 7 This is a schematic diagram showing the connection of multiple first-type module lighting units in an embodiment of the lighting device of the present invention;

[0039] Figure 8 This is a schematic diagram showing the connection of multiple second-type modular lighting units in an embodiment of the lighting device of the present invention;

[0040] Figure 9 This is a schematic diagram showing the connection of multiple third-type module lighting units in an embodiment of the lighting device of the present invention;

[0041] Figure 10 for Figure 7 A schematic diagram of the effect structure of the lighting unit after DIY in the embodiment;

[0042] Figure 11 This is a schematic diagram of the process structure when the control box and the lighting unit are assembled in an embodiment of the present invention;

[0043] Wherein: 1-Lighting unit; 2-Control box; 31-First magnetic component; 32-First magnetic suction component; 41-First conductive part; 42-Second conductive part. Detailed Implementation

[0044] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0045] In current lighting equipment, when the number of lighting units is too large, voltage drop occurs during transmission. Therefore, the brightness of lighting units farther from the power input is significantly lower than that of units closer to the power input, resulting in most current lighting equipment having fewer than ten lighting units. This invention addresses this by adding a corresponding power conversion module to each lighting unit, enabling the product to maintain consistent brightness across a larger number of lighting units.

[0046] The following is in conjunction with the appendix Figure 1-11 The technical solution of this embodiment is described in detail. Unless otherwise specified, the following implementation methods and embodiments can be combined with each other.

[0047] Example

[0048] like Figure 1 As shown, this embodiment proposes a lighting device, including:

[0049] Multiple interconnected lighting units, and each lighting unit 1 includes a light source and a first power conversion module. The first power conversion module includes a first input terminal and a first output terminal, and the first output terminal is connected to the light source.

[0050] The first power conversion module is used to convert the voltage at the first input terminal into the operating voltage of the light source, and output it to the light source through the first output terminal.

[0051] Compared to existing technologies, in this embodiment of the invention, to ensure that the brightness of each lighting unit 1 is consistent after splicing multiple lighting units 1, a separate power supply design is implemented for each lighting unit 1, as shown in the power supply design block diagram below. Figure 1 As shown, a power conversion module is provided in each lighting unit 1. The power conversion module in the lighting unit 1 converts the voltage input to the lighting unit 1 into the working voltage of the light source, thereby ensuring that the voltage of the light source in multiple lighting units 1 is the working voltage of the light source, and thus making the brightness of multiple lighting units 1 consistent.

[0052] It is worth noting that multiple lighting units 1 can be set on circuits with low input voltage values ​​or circuits with high input voltage values.

[0053] Specifically, if the voltage input to the first input terminal of the first power conversion module is less than the operating voltage of the light source, the first power conversion module includes a boost circuit to boost the voltage input to the first input terminal to the operating voltage of the light source; or

[0054] When the voltage input to the first input terminal of the first power conversion module is greater than the operating voltage of the light source, the first power conversion module includes a step-down circuit to reduce the voltage at the first input terminal to the operating voltage of the light source.

[0055] As can be seen, regardless of whether the lighting unit 1 in this embodiment of the invention is located on a circuit with a small input voltage or a large input voltage, the input voltage input to the lighting unit 1 can be converted into the operating voltage of the light source by incorporating a power conversion module. This ensures that the brightness of multiple lighting units 1 remains consistent.

[0056] However, relatively speaking, it is preferable to place multiple lighting units 1 on a circuit with a higher input voltage value, as this yields better results. This is because the power conversion efficiency of a buck circuit design is higher than that of a boost circuit design.

[0057] To better understand the working principle of the first power conversion module in this embodiment of the invention, the following description uses the example of the lighting unit 1 being installed on a circuit with a large input voltage value to illustrate the first power conversion module:

[0058] like Figure 2 As shown, Figure 2The design of the buck circuit is shown. In simple terms, the output voltage Vout is less than the input voltage Vin. The reason for using this design is that the buck circuit has a higher power conversion efficiency than the boost circuit design, resulting in less electrical energy being converted into heat energy. Figure 2 In the diagram, Cin is the input filter capacitor of the power module, and Cout is the output filter capacitor. A buck converter chip is used in the middle (i.e., in a buck circuit, the power conversion module includes a buck converter chip; correspondingly, in a boost circuit, the power conversion module includes a boost converter chip). The matching of resistors R1 and R2 is used to adjust the output voltage value of Vout.

[0059] In any of the above embodiments, the light source in at least one lighting unit 1 includes a plurality of light-emitting units, each group of light-emitting units including at least one light-emitting element; wherein the number of first power conversion modules corresponds one-to-one with the number of light-emitting units, and the first output terminal of each first power conversion module is connected to a group of light-emitting units.

[0060] Since the number of the first power conversion modules corresponds one-to-one with the number of light-emitting units in the lighting unit 1, the brightness of the multiple light-emitting units in each lighting unit 1 can always remain consistent when the lighting unit 1 is lit.

[0061] It is worth noting that in existing technology, when multiple lighting units are used together, PWM control is typically used to control lighting unit 1. (Note: PWM is a method of digitally encoding analog signal levels. Using a high-resolution counter, the duty cycle of a square wave is modulated to encode the level of a specific analog signal. The PWM signal is still digital because at any given moment, the full-amplitude DC power supply is either fully on or fully off.) When the PWM control frequency is too low, the flicker of lighting unit 1 is severe, thus causing eye fatigue.

[0062] To solve the problem of severe flickering in lighting unit 1, such as Figure 3 and Figure 4 As shown, the lighting device in this embodiment also includes a control box 2, which includes a control module. Each lighting unit 1 includes a microprocessor and a drive module connected to the microprocessor. The drive module of the same lighting unit 1 is electrically connected to the light source. The microprocessor of each lighting unit 1 is connected to the control module. The microprocessor receives the signal from the control module and controls the drive module to drive the light source to emit light according to the signal. The drive module is a constant current drive module.

[0063] In this embodiment, each lighting unit 1 is equipped with a microprocessor (MCU) and a constant current drive module. When the MCU in the lighting unit 1 closest to the control box 2 receives a control command from the control box 2, it can control the corresponding constant current drive module. After receiving the control command from the MCU, the constant current drive module controls the light source of the color corresponding to the command to light up through the constant current drive circuit. After the control is completed, it transmits the control command to the next level module, lighting unit 1. This effectively solves the problem of severe flickering in multiple lighting units caused by PWM control in traditional lighting equipment.

[0064] Furthermore, within the same lighting unit 1, the light source includes multiple sets of light-emitting units, each set of light-emitting units including at least one light-emitting element, and the constant current drive module is electrically connected to each set of light-emitting units. Since the constant current drive module is electrically connected to each set of light-emitting units in the lighting unit 1, when the lighting unit 1 is lit, the multiple light-emitting units in each lighting unit 1 will not experience severe flickering.

[0065] In any of the above embodiments, within the same lighting unit 1, at least one group of light-emitting units emits a different color than the remaining light-emitting units; and / or

[0066] Multiple lighting units are connected in series, and the control module outputs signals to the microprocessor of each lighting unit in sequence.

[0067] By connecting multiple lighting units 1 in series, when the control box 2 sends a control signal, it can control the multiple lighting units 1 connected in series individually in sequence. Thus, the desired display effect can be DIYed on the multiple lighting units 1 by controlling the control box 2.

[0068] In any of the above embodiments, the control box 2 further includes a communication module. Specifically, the communication module includes a Wi-Fi module and / or a Bluetooth module. The communication module is connected to the control module and the microprocessor, respectively. The communication module communicates with the microprocessor in the lighting unit 1 based on a single-bus communication protocol. The microprocessor in the lighting unit 1 communicates with the light source of the lighting unit 1 based on a single-bus communication protocol.

[0069] In this embodiment of the invention, the control box 2 communicates with multiple lighting units 1 via a single bus protocol, resulting in a higher communication rate. Furthermore, the lighting unit is equipped with a microprocessor and a constant current drive module, which can effectively solve the severe flickering problem caused by the PWM control of traditional lighting equipment.

[0070] In any of the above embodiments, the lighting device further includes a second power conversion module, which includes a second input terminal and a second output terminal. The second output terminal is connected to the communication module and is used to convert the voltage of the second input terminal into the operating voltage of the communication module and output it to the communication module through the second output terminal.

[0071] In this embodiment, by setting a second power conversion module, the output voltage of the control box 2 can be adjusted to be consistent with the voltage of the light source of the lighting unit 1, thereby facilitating the control box 2 to control the lighting unit.

[0072] The following is combined Figure 3 and Figure 4 Please provide a detailed explanation;

[0073] Specifically, such as Figure 3 As shown, lighting unit 1 communicates with control box 2 via a single-bus protocol. Control signals from the WIFI & BT modules (i.e., wireless communication and Bluetooth modules) in the control box are converted by a level conversion module and sent to the output of control box 2. The output of control box 2 then directly sends the signal to the MCU of the reflector light source via the input of lighting unit 1. Upon receiving the control command, the MCU of the light source controls the constant current drive circuit of the constant current drive module to illuminate the light source of the corresponding color. After control is completed, the signal is transmitted to the next-level lighting unit. It should be noted that in this embodiment, "after control is completed, the signal is transmitted to the next-level lighting unit" refers to multiple lighting units 1 connected in series in the circuit, i.e., multiple lighting units 1 connected sequentially. However, in some alternative embodiments, such as multiple lighting units 1 connected in parallel in the circuit, the control box can simultaneously control multiple parallel lighting units 1 to light up, turn off, or perform other operations. It should also be noted that although when multiple lighting units 1 are connected in series, the control box 2 controls the multiple lighting units 1 in a hierarchical manner (that is, after one lighting unit 1 finishes its execution, it is then passed to the next level lighting unit for execution), the user's vision will not perceive the problem of the lighting unit execution delay. This is because the single-bus communication rate can reach 800KHz or even 1MHz or more, so the persistence of vision will not detect the delay problem of this lighting unit 1.

[0074] More specifically, such as Figure 4 As shown, Figure 4 The diagram shows a level conversion circuit, where VCC is the chip power supply pin, which determines the voltage level of the Dout signal output pin (e.g., this product is currently designed for 5V, as the smart LED is powered by 5V, and its control signal level is 5V). Din is the signal input terminal, and its signal voltage level depends on the voltage output by the MCU (currently 3.3V, as the logic level output by the MCU is 3.3V). This circuit design only changes the voltage level of the control signal, without changing the timing of its control waveform.

[0075] In any of the above embodiments, such as Figure 5As shown, the control box 2 is provided with a connection port, and the lighting unit 1 is electrically connected to the control box at the connection port, and is also magnetically connected to the control box at the connection port.

[0076] In this embodiment, by connecting the control box 2 and the lighting unit 1 by magnetic adsorption, the connection reliability between the control box 2 and the lighting unit 1 can be improved.

[0077] In any of the above embodiments, the plurality of lighting units 1 mentioned above includes a first lighting unit and a second lighting unit. The first lighting unit includes a first port, and the second lighting unit includes a second port, wherein the first port of the first lighting unit and the second port of the second lighting unit are electrically connected and magnetically attracted to each other.

[0078] In this embodiment, multiple lighting units 1 are connected by magnetic adsorption, which facilitates the splicing of multiple lighting units 1 and improves the reliability of multiple lighting units 1 after splicing.

[0079] It is worth noting that the first lighting unit and the second lighting unit mentioned above may be the same or different in terms of their specifications and forms. In this embodiment, in order to facilitate the explanation of the connection method between multiple lighting units 1, the multiple lighting units are divided into two forms: the first lighting unit and the second lighting unit.

[0080] Specifically, the first port of the first lighting unit includes a first conductive part and a first magnetic part, and the second port of the second lighting unit includes a second conductive part and a second magnetic part, wherein the first magnetic part and the second magnetic part are attracted and connected, and the first conductive part and the second magnetic part are electrically connected when the first magnetic part and the second magnetic part are attracted and connected.

[0081] Specifically, the first magnetic attraction part includes a first part and a second part that are separated from each other, wherein there is a gap between the first part and the second part, the first conductive part is disposed in the gap, and the second conductive part is directly opposite the first conductive part.

[0082] In this embodiment, the first conductive part is located in the middle of the first magnetic attraction part. When the first magnetic attraction part and the second magnetic attraction part are magnetically attracted together, the magnetic attraction force on the first conductive part can be maximized, thereby improving the reliability of the first conductive part and the second conductive part when electrically connected.

[0083] More specifically, one of the first lighting unit and the second lighting unit includes a protrusion and the other includes a recess. One of the protrusion and the recess forms a first port and the other forms a second port. When the first lighting unit and the second lighting unit are magnetically attracted, the protrusion can be accommodated in the recess, so that the first lighting unit and the second lighting unit can fit together perfectly when connected, thus improving their aesthetics.

[0084] In any of the above embodiments, such as Figure 5 As shown, the first magnetic attraction part and the second magnetic attraction part mentioned above include a first circular magnet and a second circular magnet that can magnetically attract and cooperate with each other;

[0085] The first conductive part includes an elastic current needle disposed in the middle of the first circular magnet, and correspondingly, the second conductive part includes a conductive disk disposed in the middle of the second circular magnet, or;

[0086] Alternatively, the first conductive part includes a conductive disk disposed in the middle of the first circular magnet, and correspondingly, the second conductive part includes an elastic current needle disposed in the middle of the second circular magnet.

[0087] It is worth noting that in some alternative embodiments, the shape of the magnet is not limited to a circle, but can also be other shapes, such as square, triangle, etc. The shape of the magnet is not specifically limited in the embodiments of the present invention.

[0088] The reason why the current needle is set to be elastic in this embodiment of the invention is that when two adjacent lighting units are magnetically attracted together by the first magnetic part and the first magnetic attraction part, the elastic current needle can be compressed, thereby improving the stability of the connection between the two adjacent lighting units 1.

[0089] Furthermore, such as Figure 11 As shown, when the above-mentioned elastic current needle is located in the middle of the first circular magnet, the first circular magnet includes two opposing and spaced semi-circular magnet units, wherein the elastic current needle is located between the two semi-circular magnet units.

[0090] Alternatively, when the aforementioned elastic current needle is located in the middle of the second circular magnet, the second circular magnet includes two opposing and spaced-apart semi-circular magnet units, wherein the elastic current needle is located between the two semi-circular magnet units.

[0091] Of course, in some alternative embodiments, the elastic current needle can also be placed on the outer periphery of the magnet (in this case, the circular magnet may not be set in the form of two semicircles, or it may be a whole circular magnet), which can also play the role of electrical connection between the two adjacent lighting units 1 when they are connected. However, relatively speaking, it is preferred that the elastic current needle be placed between the two semicircular magnet units in this embodiment.

[0092] In this embodiment of the invention, by placing the elastic current needle between two semi-circular magnet units, the magnetic attraction force at the central position of the two circular magnets is maximized during magnetic attraction, thereby further improving the stability and reliability of the connection between the elastic current needle and the conductive disk. Furthermore, protrusions and recesses are provided on the lighting unit to ensure a perfect connection when two lighting units are spliced ​​together.

[0093] In any of the above embodiments, the lighting device mentioned above in the present invention is a lighting fixture, wherein the light source provided in the lighting unit is a smart LED lamp bead provided on the lighting fixture.

[0094] It should be noted that the multiple lighting units 1 mentioned above in the embodiments of the present invention may be one type of lighting unit or different types of lighting units. In actual product applications, multiple types of lighting units can be spliced ​​together for use.

[0095] The following section uses lighting units as an example to explain in detail how multiple lighting units are spliced ​​together in the embodiments of the present invention:

[0096] like Figure 5 As shown, Figure 5 The diagram illustrates the process structure of multiple cascaded modular lighting fixtures. The control box 2 connects to each modular lighting fixture via output and input ports. Magnets, as mentioned above, are installed inside these ports. The attraction between the S and N poles of the magnets ensures reliable and convenient connections between the control box and the modular lighting fixtures, as well as between the individual modules. The control box 2 has a power interface for supplying power to the entire device, and an output port with power and control signals. This output port connects to the input ports of the modular lighting fixtures to supply power and control their color, brightness, etc. Each modular lighting fixture also has an output port identical to the control module at its other end, allowing for cascading to the next modular lighting fixture.

[0097] Furthermore, each module's light-emitting area is distinctly different. The cascading design of these different light fixtures and the free variation of color and brightness are achieved through the input and output ports of each module. Figure 5 After multiple modular lighting fixtures are cascaded, their form is as follows: Figure 6 As shown, the number of cascaded nodes can be n (n≥1).

[0098] in Figure 7 A schematic diagram of the cascaded configuration of multiple first-type modular lighting fixtures is shown;

[0099] in Figure 8 This diagram illustrates the configuration of multiple second-type modular lighting fixtures after cascading.

[0100] in Figure 9 This diagram illustrates the configuration of multiple third-type modular lighting fixtures after cascading.

[0101] There is a touch button at the corresponding position of the power interface of control box 2 for touch control. Inside control box 2, there is a WIFI & BT dual-mode module serving as the main control MCU for the entire device, used to control each module light fixture. It can also connect to a mobile app, allowing users to customize the display effects based on the cascaded module light fixtures. For example, the first module light fixture can display the current network time in real time, with the display effect as follows... Figure 10 As shown, different modules of the lamps can be customized to create different effects.

[0102] In any of the above embodiments, the lighting equipment also includes a power line carrier module, which combines the power supply line and signal line into a single circuit by utilizing carrier communication technology. This effectively reduces the complexity of the system while ensuring power supply, data, and control signals.

[0103] Specifically, the principle of carrier power supply is as follows: the carrier signal can be directly superimposed on the DC power supply network. Most consumer lighting fixtures are powered by adapters, so the adapter can be used directly for power supply without changing the product form.

[0104] Specifically, the carrier communication principle is as follows: the carrier signal can be directly superimposed onto the DC power supply network. Most consumer lighting fixtures are powered by adapters, so they can be powered directly using an adapter without changing the product's form. No additional functions need to be added to the downstream DC power supply network.

[0105] The power line carrier module includes:

[0106] The first power line carrier module is used to transmit data with multiple lighting units. The first power line carrier module is installed in the control box and is connected to the control module and communication module of the control box. The communication module is used to receive external signals and send external signals to the first power line carrier module.

[0107] The second power line carrier module is used to transmit data with the control box. The second power line carrier module is installed on at least one of the multiple lighting units and is electrically connected to the microprocessor and constant current drive module in the lighting unit.

[0108] This embodiment utilizes a first power line carrier module, where carrier data information can be directly superimposed onto the DC power network. After the signal is modulated, it can directly supply power to the downstream load. The signal is sent to the lighting unit through the control box, and the lighting unit transmits the signal back to the main control box through the second power line carrier module, forming a signal loop. This enables power supply, communication, and data transmission between different lighting units.

[0109] Specifically, the first power line carrier module located in the control box includes:

[0110] The first modem is connected to the control module and / or the communication module;

[0111] The first line tuner is connected to the first modem;

[0112] The first band-stop filter is connected to the first line tuner and to the connection port of the control box;

[0113] The second power line carrier module located in the lighting unit includes:

[0114] A second modem, connected to the microprocessor;

[0115] The second line tuner is connected to the second modem;

[0116] The second band-stop filter is connected to the second line tuner and to either the first or second port.

[0117] The working mechanisms of the control box and lighting unit are described separately below, taking into account the first power line carrier module and the second power line carrier module: Wherein;

[0118] Control box working mechanism: From the control box to the lighting unit, the control module or communication module sends a digital signal to the first modem. After modulation, the signal is transmitted to the first line tuner. The first line tuner then transmits the signal to the first band-stop filter for filtering. The communication data is then added to the DC power supply line to form a carrier signal. The DC power and communication signal are transmitted to the lighting unit through a connector. When the control box receives a signal from the lighting unit, the carrier signal passes through the first band-stop filter, then the first tuner, and finally the first modem, ultimately reaching the control module or module at the control box. The MCU and DC power supply at the controller end can be directly powered by the DC power output from the DC adapter. The control signal is output by the MCU or module at the control box and simultaneously sent to the lighting unit connected to the downstream circuit to achieve soft-on and dimming control of the smart lighting fixtures.

[0119] The lighting unit's operating mechanism is as follows: The carrier signal is first filtered by a second band-stop filter, then split into a modulated signal (communication data) and DC power by a second modem. The modulated signal is converted into a digital signal by the second modem and then transmitted to the MCU at the smart lighting unit. When the MCU at the lighting unit sends a digital signal, it passes the digital signal through the second modem to the second line tuner, and then through the second band-stop filter to form a carrier signal with the DC power, which is then sent back to the control module, enabling bidirectional communication. The DC power separated by the demodulator provides the necessary power to the subsequent MCU, DC-DC converter, dimming chip, etc.

[0120] Compared with the prior art, the lighting device in the embodiments of the present invention has at least the following technical effects:

[0121] (1) The magnetic connection solution of the connection port can effectively solve the connection method of the plug-in terminal in the current market, making the connection between the lighting modules more reliable and the connection method more convenient;

[0122] (2) There are more types of modular lighting fixtures, which solves the problem of the current product form uniformity and brings a better product experience to customers;

[0123] (3) In this embodiment of the invention, a corresponding power conversion module is added to each module lamp, so that when more module lamps are cascaded, the brightness of the lamps can be kept consistent.

[0124] (4) The module lamp uses smart lamp beads for driving. The MCU communicates with the smart lamp beads through a single bus protocol, which has a higher communication rate. The smart lamp beads contain an MCU and a constant current drive module, which can effectively solve the serious flickering problem caused by the PWM control of traditional lamps.

[0125] (5) By setting up a power line carrier module, the redundancy problem when power transmission lines and communication lines coexist is effectively solved. In this embodiment, mature carrier transmission technology is used, which has low cost and good reliability.

[0126] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0127] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

[0128] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0129] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A lighting device, characterized in that, include: Multiple interconnected lighting units (1), the multiple lighting units (1) are connected in series and each lighting unit (1) includes a light source and a first power conversion module, the first power conversion module includes a first input terminal and a first output terminal, the first output terminal is connected to the light source; The first power conversion module is used to convert the voltage of the first input terminal into the working voltage of the light source, and output it to the light source through the first output terminal, so as to ensure that the brightness of each lighting unit is consistent after multiple lighting units are spliced ​​together. The voltage at the first input terminal is less than the operating voltage of the light source, and the first power conversion module includes a boost circuit for boosting the voltage at the first input terminal to the operating voltage of the light source; or The voltage at the first input terminal is greater than the operating voltage of the light source, and the first power conversion module includes a step-down circuit for reducing the voltage at the first input terminal to the operating voltage of the light source; The lighting device also includes a control box (2), the control box (2) includes a control module, each lighting unit (1) includes a microprocessor and a drive module connected to the microprocessor, the drive module of the same lighting unit (1) is electrically connected to the light source, the microprocessor of each lighting unit (1) is connected to the control module, the microprocessor receives the signal from the control module, and controls the drive module to drive the light source to emit light according to the signal; The control box (2) also includes a communication module, which is connected to the control module and the microprocessor respectively. The communication module communicates with the microprocessor in the lighting unit (1) based on the single-bus communication protocol. The microprocessor in the lighting unit (1) communicates with the light source of the lighting unit (1) based on the single-bus communication protocol.

2. The lighting device according to claim 1, characterized in that, The light source in at least one of the lighting units (1) includes a plurality of light-emitting units, each of which includes at least one light-emitting element; The number of the first power conversion modules corresponds one-to-one with the number of the light-emitting units, and each first power conversion module's first output terminal is connected to a set of the light-emitting units.

3. The lighting device according to claim 1, characterized in that, The driving module is a constant current driving module.

4. The lighting device according to claim 3, characterized in that, Within the same lighting unit (1), the light source includes multiple groups of light-emitting units, each group of light-emitting units includes at least one light-emitting element, and the constant current driving module is electrically connected to each group of light-emitting units.

5. The lighting device according to claim 4, characterized in that, The lighting device further includes a second power conversion module, which includes a second input terminal and a second output terminal. The second output terminal is connected to the communication module and is used to convert the voltage of the second input terminal into the operating voltage of the communication module and output it to the communication module through the second output terminal.

6. The lighting device according to any one of claims 3 to 5, characterized in that, The control box (2) is provided with a connection port, the lighting unit (1) is electrically connected to the control box (2) at the connection port, and is magnetically connected to the control box (2) at the connection port.

7. The lighting device according to any one of claims 1 to 5, characterized in that, The plurality of lighting units include a first lighting unit and a second lighting unit. The first lighting unit includes a first port, and the second lighting unit includes a second port. The first port and the second port are electrically connected and magnetically attached to each other.

8. The lighting device according to claim 7, characterized in that, One of the first lighting unit and the second lighting unit includes a protrusion and the other includes a recess. One of the protrusion and the recess forms a first port and the other forms a second port. In a magnetically adsorbed connection state, the protrusion is received in the recess.

9. The lighting device according to claim 7, characterized in that, The first port of the first lighting unit includes a first conductive part and a first magnetic part, and the second port of the second lighting unit includes a second conductive part and a second magnetic part, wherein the first magnetic part and the second magnetic part are magnetically connected. The first magnetic attraction part includes a first part and a second part that are spaced apart from each other, with a gap between the first part and the second part. The first conductive part is disposed within the gap, and the second conductive part is directly opposite the first conductive part.

10. The lighting device according to claim 9, characterized in that, The lighting device also includes: A first power line carrier module is used to transmit data with multiple lighting units. The first power line carrier module is installed in the control box and is connected to the control module and communication module of the control box. The communication module is used to receive external signals and send the external signals to the first power line carrier module. The second power line carrier module is used to transmit data with the control box. The second power line carrier module is installed on at least one of the multiple lighting units. The second power line carrier module is electrically connected to the microprocessor and constant current drive module in the lighting unit.

11. The lighting device according to claim 10, characterized in that, The first power line carrier module includes: A first modem is connected to the control module and / or the communication module; A first line tuner is connected to the first modem; A first band-stop filter is connected to the first line tuner and to the connection port of the control box; The second power line carrier module includes: A second modem is connected to the microprocessor; The second line tuner is connected to the second modem; The second band-stop filter is connected to the second line tuner and to either the first port or the second port.

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