Power line carrier circuit and lighting device

Abstract

The application provides a power carrier circuit and a lighting device, and relates to the technical field of circuits. A carrier signal is modulated into alternating current of a first power line to obtain an alternating current carrier control signal. A rectifier converts the alternating current carrier control signal transmitted by the first power line into direct current to obtain a first direct current signal. A first coupler is used to filter out direct current and low-frequency signals in the alternating current carrier control signal and retain high-frequency signals in the alternating current carrier control signal to obtain a target carrier signal. The target carrier signal and the first direct current signal are modulated in a second power line to obtain a direct current power carrier signal. A second coupler is used to couple the target carrier signal from the direct current power carrier signal and transmit the target carrier signal to a lighting module. The lighting module takes power from the direct current power carrier signal and operates according to the target carrier signal. Four-wire transmission is not required, and the use of wires can be effectively reduced.

Description

Technical Field

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

[0002] With the continuous development of technology, lighting devices have become indispensable in people's lives. In addition to simply controlling the switching of lighting devices with switches, it is now possible to control the brightness of lighting devices or set timers by using specific signals.

[0003] In related technologies, a four-wire system is used to achieve power supply and signal transmission. This system consists of four independent signal lines: positive, negative, data, and ground. In this system, the positive wire provides the positive voltage for the power supply or signal, the negative wire provides the negative voltage, the data line transmits specific audio, video, or data signals, and the ground wire provides a common ground reference point to ensure signal accuracy and stability. However, the four-wire system consumes more wiring, and due to the larger number of lines, the probability of failure is relatively higher. Therefore, how to better control lighting devices has become a pressing issue for the industry. Summary of the Invention

[0004] This invention provides a power line carrier circuit and lighting device to solve the shortcomings of the existing four-wire system, which consumes more wires and has a relatively higher probability of failure due to the large number of lines.

[0005] This invention provides a power line carrier circuit, comprising:

[0006] A carrier circuit, the output of which is connected to a first power line, is used to modulate a carrier signal onto the AC power of the first power line to obtain an AC carrier control signal.

[0007] A rectifier, the input terminal of which is connected to the first power line, is used to convert the AC carrier control signal transmitted by the first power line into DC power to obtain a first DC signal.

[0008] A first coupler, the first port of the first coupler is connected to the first power line, the first coupler is used to filter out the DC signal and low frequency signal in the AC carrier control signal, and retain the high frequency signal in the AC carrier control signal to obtain the target carrier signal, the target carrier signal and the first DC signal are modulated in the second power line to obtain the DC power carrier signal;

[0009] There are N decoding lighting units, each including a second coupler and a lighting module for communication connection, where N is a positive integer. The output terminal of the rectifier and the second port of the first coupler are connected to the second coupler and the lighting module in each decoding lighting unit through the second power line. The second coupler is used to couple the target carrier signal from the DC power carrier signal and transmit the target carrier signal to the lighting module. The lighting module draws power based on the DC power carrier signal and operates according to the target carrier signal.

[0010] According to a power line carrier circuit provided by the present invention, the circuit further includes: a power amplifier, the power amplifier being connected to a second port of the first coupler and a second power line respectively, the power amplifier being used to amplify the target carrier signal and then transmit the amplified target carrier signal to the second power line.

[0011] According to a power line carrier circuit provided by the present invention, the first power line includes a neutral wire and a live wire, the second power line includes a positive wire and a negative wire, and the first coupler includes:

[0012] A first capacitor, a second capacitor, and a first transformer are provided. The first capacitor is connected to the live wire and a first port of the first transformer, respectively. The second capacitor is connected to the neutral wire and a second port of the first transformer, respectively. The first capacitor and the second capacitor are used to filter out the DC signal in the AC carrier control signal to obtain a first carrier signal. The first transformer is used to filter out the low-frequency signal in the first carrier signal to obtain a second carrier signal.

[0013] The third capacitor is connected to the third port of the first transformer and the positive line, and the fourth port of the first transformer is connected to the negative line. The third capacitor is used to filter out the DC signal in the second carrier signal to obtain the target carrier signal, and transmit the target carrier signal to the second power line.

[0014] According to a power line carrier circuit provided by the present invention, the second coupler includes: a fourth capacitor and a second transformer. The fourth capacitor is connected to the positive line and a first port of the second transformer, respectively. The second port of the second transformer is connected to the negative line. The third and fourth ports of the second transformer are connected to the lighting module. The fourth capacitor is used to filter out low-frequency signals in the DC power carrier signal. The second transformer is used to couple the target carrier signal from the DC power carrier signal and transmit the target carrier signal to the lighting module.

[0015] According to a power line carrier circuit provided by the present invention, the circuit further includes: a decoder, a first port of the decoder being connected to a third port and a fourth port of a second transformer, a second port of the decoder being communicatively connected to the lighting module, the decoder being used to decode the target carrier signal into a pulse width modulation signal and transmit the pulse width modulation signal to the lighting module.

[0016] According to the present invention, a power line carrier circuit is provided, the circuit further comprising: a microcontroller, the microcontroller being communicatively connected to the decoder and the lighting module respectively, the microcontroller being used to control the operation of the lighting module through the pulse width modulation signal.

[0017] According to the present invention, a power line carrier circuit further includes a filter; the filter is connected to the output terminal of the rectifier and the second power line respectively; the filter is used to filter out high-frequency differential mode signals in the first DC signal.

[0018] According to the present invention, a power line carrier circuit is provided, wherein the lighting module includes a dimming module and a light-emitting unit; the dimming module is connected to a second power line and a second coupler respectively, and the dimming module is used to control the brightness of the light-emitting unit according to the target carrier signal.

[0019] According to the present invention, a power line carrier circuit is provided, wherein the light-emitting unit includes at least one of the following: a light-emitting diode, a laser diode, an organic light-emitting diode, or other light-emitting units.

[0020] The present invention also provides a lighting device comprising any of the power line carrier circuits described above.

[0021] The power line carrier circuit and lighting device provided by this invention obtain an AC carrier control signal by modulating a carrier signal into AC power. This AC carrier control signal only requires a first power line consisting of only two wires for signal transmission. Subsequently, a first coupler can be used to filter out DC and low-frequency signals from the AC carrier control signal, retaining the high-frequency signals to obtain a target carrier signal. After the rectifier converts the AC carrier control signal into DC power, the first DC signal is modulated on a second power line consisting of only two wires to obtain a DC power carrier signal. This DC power carrier signal can power the lighting module while the second coupler can couple the target carrier signal from it, thereby controlling the operation of the lighting module according to the target carrier signal. The power line carrier circuit of this invention can achieve power supply and signal transmission with only two wires, effectively reducing the use of wires and reducing the risk of failure due to excessive wires. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is one of the schematic diagrams of a power line carrier circuit structure provided in an embodiment of the present invention;

[0024] Figure 2 This is a second schematic diagram of the power line carrier circuit structure provided in an embodiment of the present invention;

[0025] Figure 3 This is the third schematic diagram of the power line carrier circuit structure provided in the embodiment of the present invention;

[0026] Figure 4 This is the fourth schematic diagram of the power line carrier circuit structure provided in the embodiments of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of a lighting device provided in an embodiment of the present invention. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0029] Figure 1 This is one of the schematic diagrams of a power line carrier circuit structure provided in an embodiment of the present invention, such as... Figure 1 As shown, it includes: a carrier 11, a first coupler 12, a rectifier 13, and N decoding illumination units 18, wherein the decoding illumination unit 18 includes a second coupler 14 and an illumination module 15;

[0030] The output terminal of the carrier 11 is connected to the first power line 16. The carrier 11 modulates the carrier signal into the AC power of the first power line 16 to obtain an AC carrier control signal.

[0031] The first port of the first coupler 12 and the input terminal of the rectifier 13 are both connected to the first power line 16;

[0032] The rectifier 13 converts the AC carrier control signal transmitted by the first power line 16 into DC power to obtain a first DC signal.

[0033] The first coupler 12 is used to filter out the DC signal and low-frequency signal in the AC carrier control signal, and retain the high-frequency signal in the AC carrier control signal to obtain the target carrier signal.

[0034] The second port of the first coupler 12 and the output terminal of the rectifier 13 are connected to the second coupler 14 and the lighting module 15 in each decoding lighting unit 18 via the second power line 17. The second coupler 14 is communicatively connected to the lighting module 15.

[0035] The target carrier signal and the first DC signal are modulated in the second power line 17 to obtain a DC power carrier signal.

[0036] The second coupler 14 is used to couple the target carrier signal from the DC power carrier signal and transmit the target carrier signal to the lighting module 15.

[0037] The lighting module 15 is powered by the DC power carrier signal and operates according to the target carrier signal.

[0038] In this embodiment of the invention, the first power line may specifically be connected to an AC power source, which provides AC power to the first power line, for example, the AC power source provides 220V AC power or 110V AC power to the first power line.

[0039] In this embodiment of the invention, the carrier device can modulate the carrier signal used to control the lighting equipment into the AC power of the first power line. At this time, the AC carrier control signal is still transmitted in the first power line, but the AC carrier control signal has both the characteristics of AC power and can carry the information of the carrier signal.

[0040] In this embodiment of the invention, the AC carrier control signal is transmitted to a first coupler and a rectifier, respectively. The rectifier converts the AC signal into a DC signal. Its main function is to convert the fluctuating voltage of the AC power supply into a stable DC voltage for use by electronic devices and circuits. Therefore, the rectifier in this invention converts the AC carrier control signal into DC to obtain the first DC signal.

[0041] In this embodiment of the invention, the first coupler specifically filters out the DC component of the AC carrier control signal, retains the AC signal component, and can further filter out the low-frequency component of the signal, couple down the high-frequency signal and transmit it to obtain the target carrier signal, and then transmit the target carrier signal to the second power line.

[0042] In this embodiment of the invention, after the rectifier transmits the first DC signal to the second power line and the first coupler transmits the target carrier signal to the second power line, the target carrier signal and the first DC signal are loaded together to obtain a DC power carrier signal. This DC power carrier signal can provide power and also carries the target carrier signal used to control the lighting module.

[0043] In this embodiment of the invention, the second power line can directly transmit the DC power carrier signal to the lighting module, thereby powering the lighting module. On the other hand, the second coupler can effectively couple the target carrier signal for controlling the operation of the lighting module from the DC power carrier signal and transmit the target carrier signal to the lighting module, thereby realizing the operation control of the lighting module.

[0044] In this embodiment of the invention, an AC carrier control signal is obtained by modulating a carrier signal into AC power. This AC carrier control signal only requires a first power line consisting of only two wires for signal transmission. Subsequently, a first coupler can be used to filter out the DC signal and low-frequency signal in the AC carrier control signal, retaining the high-frequency signal to obtain the target carrier signal. After the rectifier converts the AC carrier control signal into DC power, the first DC signal is modulated in a second power line consisting of only two wires to obtain a DC power carrier signal. This DC power carrier signal can power the lighting module while the second coupler can couple the target carrier signal from the DC power carrier signal, thereby enabling the lighting module to be controlled according to the target carrier signal. The power carrier circuit in this invention can achieve power supply and signal transmission with only two wires, effectively reducing the use of wires and reducing the risk of failure due to excessive wires.

[0045] Optionally, Figure 2 The second schematic diagram of the power line carrier circuit structure provided in the embodiment of the present invention includes: the first power line 16 includes: a neutral line 161 and a live line 162; the second power line 17 includes: a positive line 171 and a negative line 172; and the first coupler 12 includes: a first capacitor 121, a second capacitor 122, a first transformer 123 and a third capacitor 124.

[0046] The first capacitor 121 is connected to the live wire 162 and the first port of the first transformer 123 respectively, and the second capacitor 122 is connected to the neutral wire 161 and the second port of the first transformer 123 respectively.

[0047] Wherein, the first capacitor 121 and the second capacitor 122 are used to filter out the DC signal in the AC carrier control signal to obtain the first carrier signal, and the first transformer 123 is used to filter out the low frequency signal in the first carrier signal to obtain the second carrier signal;

[0048] The third capacitor 124 is connected to the third port of the first transformer 123 and the positive line 171, respectively, and the fourth port of the first transformer 123 is connected to the negative line 172.

[0049] The third capacitor 124 is used to filter out the DC signal in the second carrier signal to obtain the target carrier signal, and transmit the target carrier signal to the second power line 17.

[0050] Specifically, in this embodiment of the invention, the first capacitor and the second capacitor are respectively disposed on the neutral wire and the live wire of the first power line, so that the DC signal in the AC carrier control signal is filtered out by the first capacitor and the second capacitor to obtain the first carrier signal. Then the first carrier signal is transmitted to the first transformer. The first transformer specifically filters out the low frequency component in the first carrier signal and then couples down the high frequency signal and transmits it. In addition, the first transformer can also achieve safe isolation of the signal to obtain the second carrier signal.

[0051] In an alternative embodiment, the first transformer may be an isolation transformer.

[0052] In this embodiment of the invention, after the first transformer receives the second carrier signal, it can transmit it to the third capacitor. At this time, the third capacitor can further filter out the DC signal in the second carrier signal and finally obtain the target carrier signal, and transmit the target carrier signal to the second power line.

[0053] In this embodiment of the invention, the first coupler can effectively filter out the DC signal and low-frequency signal in the AC carrier control signal, while retaining the high-frequency signal, and finally obtain the target carrier signal. At the same time, the first transformer in the first coupler can also effectively isolate the signal and ensure stable signal transmission.

[0054] Optionally, the circuit further includes: a power amplifier, which is connected to the second port of the first coupler and the second power line, respectively;

[0055] The power amplifier is used to amplify the target carrier signal and then transmit the amplified target carrier signal to the second power line.

[0056] In this embodiment of the invention, since many first power lines may also be connected to other devices, the target carrier signal coupled to the first coupler has been attenuated to a certain extent, which is not conducive to subsequent signal transmission. Therefore, in this embodiment of the invention, a power amplifier connected to the first coupler can be further provided.

[0057] In this embodiment of the invention, after the first coupler outputs the target carrier signal, it is first amplified by the power amplifier before being input into the second power line.

[0058] In this embodiment of the invention, the power amplifier effectively avoids the problem of target carrier signal attenuation, ensuring effective signal transmission.

[0059] Optionally, the circuit further includes: a filter; the filter is connected to the output terminal of the rectifier and the second power line respectively;

[0060] The filter is used to filter out high-frequency differential signals in the first DC signal.

[0061] In this embodiment of the invention, after the rectifier converts the AC carrier control signal into DC to obtain the first DC signal, in order to improve the quality of the DC signal, a filter can be used to further filter out the high-frequency differential mode signal in the first DC signal. This can effectively prevent the high-frequency signal in the DC from interfering with the control signal component in the target carrier signal, so that the DC power carrier signal meets the requirements of no crosstalk and low attenuation in the subsequent decoding process.

[0062] In this embodiment of the invention, the filter can effectively remove the high-frequency differential mode signal in the first DC signal, thereby effectively ensuring that the high-frequency signal in the DC signal does not interfere with the target carrier signal.

[0063] Optionally, Figure 3 This is the third schematic diagram of the power line carrier circuit structure provided in the embodiment of the present invention, as shown below. Figure 3 As shown, the second coupler 14 includes: a fourth capacitor 141 and a second transformer 142;

[0064] The fourth capacitor 141 is connected to the positive line 171 and the first port of the second transformer 142, the second port of the second transformer 142 is connected to the negative line 172, and the third and fourth ports of the second transformer 142 are connected to the lighting module 15.

[0065] The fourth capacitor 141 is used to filter out low-frequency signals in the DC power carrier signal, and the second transformer 142 is used to couple the target carrier signal from the DC power carrier signal and transmit the target carrier signal to the lighting module 15.

[0066] In this embodiment of the invention, the fourth capacitor can be used to filter out low-frequency components in the target carrier signal, retain high-frequency components in the target carrier signal, and transmit the filtered target carrier signal to the second transformer for processing.

[0067] On the other hand, the fourth capacitor can also effectively prevent short circuits caused by the first and second ports of the first transformer being directly connected to the positive and negative lines.

[0068] In this embodiment of the invention, the second transformer can couple the target carrier signal from the DC power carrier signal and then transmit the target carrier signal to the lighting module. This allows the lighting module to obtain the target carrier signal for controlling the lighting while being powered by the second power line.

[0069] Optionally, the circuit further includes: a decoder, the first port of which is connected to the third and fourth ports of the second transformer, and the second port of which is communicatively connected to the lighting module;

[0070] The decoder is used to decode the target carrier signal into a pulse width modulation signal and transmit the pulse width modulation signal to the lighting module.

[0071] In this embodiment of the invention, the decoder specifically refers to decoding the target carrier signal transmitted by the second transformer into a pulse width modulation signal, which can more conveniently control the lighting module.

[0072] Optionally, the circuit further includes a microcontroller, which is communicatively connected to both the decoder and the lighting module.

[0073] The microcontroller is used to control the operation of the lighting module through the pulse width modulation signal.

[0074] In this embodiment of the invention, there is receiving communication and transmitting communication between the microcontroller and the decoder. The decoder can send the decoded pulse width modulation signal to the microprocessor. The microprocessor can control the operation of the lighting module through the pulse modulation signal according to the execution command, such as controlling the brightness modulation of the lighting module.

[0075] In one optional embodiment, the control functions performed by the microcontroller are all existing control functions, and the embodiments of the present invention do not limit this.

[0076] In this embodiment of the invention, the target carrier signal can be effectively converted into a pulse width modulation signal that is easy to process by means of a decoder and a controller, and the lighting control of the lighting module can be effectively realized by the microcontroller based on the pulse width modulation signal.

[0077] Optionally, the lighting module includes: a dimming module and a light-emitting unit; the dimming module is connected to the second power line and the second coupler respectively;

[0078] The dimming module is used to control the brightness of the light-emitting unit according to the target carrier signal.

[0079] In this embodiment of the invention, the dimming module can specifically be a module used to control the brightness of the light-emitting unit according to the target carrier signal. Specifically, it can control the light-emitting unit to become brighter or dimmer, or it can control the light-emitting unit to turn on or off at a time.

[0080] In an optional embodiment, the dimming module also transmits the DC power carrier signal transmitted via the second power line to the light-emitting unit, thereby powering the light-emitting unit.

[0081] In one optional embodiment, the light-emitting unit may specifically be a light-emitting diode, a laser diode, an organic light-emitting diode, or the like.

[0082] In one alternative embodiment, Figure 4 This is the fourth schematic diagram of the power line carrier circuit structure provided in the embodiment of the present invention, as shown below. Figure 4 As shown, the coupling path of the control signal can be specifically coupled to the bus through bus sampling, and then the control information is coupled and sampled by each branch.

[0083] In some alternative embodiments, Figure 5 This is a schematic diagram of the lighting device structure provided in an embodiment of the present invention, such as... Figure 5 As shown, the lighting device includes the power line carrier circuit described in the above embodiments. The specific details of the power line carrier circuit can be found in the above embodiments and will not be repeated here.

[0084] Optionally, in one alternative embodiment, the first power line and the second power line in the power line carrier circuit can be power lines installed in a magnetic track to achieve magnetic power supply. The specific details of the power line carrier circuit can be referred to the above embodiments, and will not be repeated here.

[0085] Furthermore, the lighting device provided by the present invention also possesses the various advantages described above due to the presence of the power line carrier circuit as described above.

[0086] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0087] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power line carrier circuit, characterized in that, include: A carrier circuit, the output of which is connected to a first power line, is used to modulate a carrier signal onto the AC power of the first power line to obtain an AC carrier control signal. A rectifier, the input terminal of which is connected to the first power line, is used to convert the AC carrier control signal transmitted by the first power line into DC power to obtain a first DC signal. A first coupler, the first port of the first coupler is connected to the first power line, the first coupler is used to filter out the DC signal and low frequency signal in the AC carrier control signal, and retain the high frequency signal in the AC carrier control signal to obtain the target carrier signal, the target carrier signal and the first DC signal are modulated in the second power line to obtain the DC power carrier signal; N decoding lighting units, each decoding lighting unit includes a second coupler and a lighting module for communication connection, where N is a positive integer. The output terminal of the rectifier and the second port of the first coupler are connected to the second coupler and the lighting module in each decoding lighting unit through the second power line. The second coupler is used to couple the target carrier signal from the DC power carrier signal and transmit the target carrier signal to the lighting module. The lighting module draws power based on the DC power carrier signal and operates according to the target carrier signal. The first power line includes a neutral wire and a live wire; the second power line includes a positive wire and a negative wire; the first coupler includes: A first capacitor, a second capacitor, and a first transformer are provided. The first capacitor is connected to the live wire and a first port of the first transformer, respectively. The second capacitor is connected to the neutral wire and a second port of the first transformer, respectively. The first and second capacitors are used to filter out the DC signal in the AC carrier control signal to obtain a first carrier signal. The first transformer is used to filter out the low-frequency signal in the first carrier signal to obtain a second carrier signal. The first transformer is an isolation transformer. The third capacitor is connected to the third port of the first transformer and the positive line, and the fourth port of the first transformer is connected to the negative line. The third capacitor is used to filter out the DC signal in the second carrier signal to obtain the target carrier signal and transmit the target carrier signal to the second power line. The second coupler includes: a fourth capacitor and a second transformer. The fourth capacitor is connected to the positive line and the first port of the second transformer, respectively. The second port of the second transformer is connected to the negative line. The third and fourth ports of the second transformer are connected to the lighting module. The fourth capacitor is used to filter out low-frequency signals in the DC power carrier signal. The second transformer is used to couple the target carrier signal from the DC power carrier signal and transmit the target carrier signal to the lighting module. The circuit further includes a decoder, the first port of which is connected to the third and fourth ports of the second transformer, and the second port of which is communicatively connected to the lighting module. The decoder is used to decode the target carrier signal into a pulse width modulation signal and transmit the pulse width modulation signal to the lighting module. The circuit further includes a microcontroller, which is communicatively connected to both the decoder and the lighting module, and is used to control the operation of the lighting module via the pulse width modulation signal.

2. The power line carrier circuit according to claim 1, characterized in that, The circuit further includes a power amplifier, which is connected to the second port of the first coupler and the second power line respectively. The power amplifier is used to amplify the target carrier signal and then transmit the amplified target carrier signal to the second power line.

3. The power line carrier circuit according to claim 1 or 2, characterized in that, The circuit further includes a filter; the filter is connected to the output terminal of the rectifier and the second power line respectively; the filter is used to filter out high-frequency differential mode signals in the first DC signal.

4. The power line carrier circuit according to claim 1 or 2, characterized in that, The lighting module includes a dimming module and a light-emitting unit; the dimming module is connected to the second power line and the second coupler respectively, and the dimming module is used to control the brightness of the light-emitting unit according to the target carrier signal.

5. The power line carrier circuit according to claim 4, characterized in that, The light-emitting unit includes at least one of the following: a laser diode or an organic light-emitting diode.

6. A lighting device, characterized in that, Includes the power line carrier circuit described in any one of claims 1 to 5.

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