Lighting module circuit

Abstract

To solve a problem of a prior art.SOLUTION: A lighting module circuit comprises a light emitting unit and a complex flicker frequency circuit. The light emitting unit includes a plurality of light emitting elements connected in series. The composite flicker frequency circuit has at least one input terminal, a first output terminal for outputting a first output signal having a first flicker frequency, and a second output terminal for outputting a second output signal having a second flicker frequency different from the first flicker frequency. The light emitting unit is coupled between a power supply terminal and the second output terminal, and the first output terminal is coupled to one of the plurality of light emitting elements.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to lighting module circuits, and more particularly to lighting module circuits that generate multiple flicker frequencies. [Background technology]

[0002] In modern life, light-emitting diode (LED) lamps are widely used in living environments. LED lamps have the advantages of longer life and energy saving compared to traditional lamps. Unlike traditional lighting fixtures, the light-emitting area of ​​an LED lamp is composed of multiple light-emitting elements, which can create more innovative applications through circuit design.

[0003] Phototherapy using flicker light stimulation has become a promising non-invasive neuromodulation strategy. Phototherapy uses light with specific flicker frequencies to stimulate cells in the body and alleviate neuropsychiatric disorders. Related manufacturers are developing various flicker light devices. Flicker light sources are used to induce corresponding frequencies in the brain. For example, 40 Hz light flicker therapy is an emerging treatment for Alzheimer's disease, aiming to treat neurological disorders by adjusting brainwave rhythms. However, existing light sources with specific flicker frequencies cause users to feel the flicker stimulation, preventing them from participating in normal daily activities and work. Summary of the Invention

[0004] The present disclosure provides a lighting module circuit capable of controlling light-emitting elements to emit light at a composite flicker frequency. In some embodiments of the lighting module circuit, the lighting module circuit can control the light-emitting elements to emit light at a composite flicker frequency including a first flicker frequency and a second flicker frequency. The lighting module circuit can control the light-emitting elements to emit light at the first flicker frequency and the second flicker frequency at respective intensities to provide illumination. The synchronized composite flicker frequency can provide reduced or no flicker lighting. In this way, the lighting module circuit can provide lighting that can positively stimulate a user with reduced visual stress.

[0005] According to some embodiments of the present disclosure, a lighting module circuit includes a light-emitting unit and a composite flicker frequency circuit. The light-emitting unit includes a plurality of light-emitting elements connected in series. The composite flicker frequency circuit has at least one input terminal for receiving control information, a first output terminal for outputting a first output signal having a first flicker frequency, and a second output terminal for outputting a second output signal having a second flicker frequency different from the first flicker frequency. The light-emitting unit is connected between a power supply terminal for receiving a power signal and the second output terminal of the composite flicker frequency circuit, and the first output terminal of the composite flicker frequency circuit is connected to one of the plurality of light-emitting elements of the light-emitting unit.

[0006] According to some embodiments of the present disclosure, a lighting module circuit includes a light-emitting unit, a first flicker frequency controller, a second flicker frequency controller, and a communication circuit. The light-emitting unit includes a plurality of light-emitting elements connected in series. The first flicker frequency controller has a first output terminal for outputting a first output signal having a first flicker frequency. The second flicker frequency controller has a second output terminal for outputting a second output signal having a second flicker frequency different from the first flicker frequency. The light-emitting unit is connected between a power supply terminal for receiving a power signal and the second output terminal of the second flicker frequency controller, and the first output terminal of the first flicker frequency controller is connected to one of the plurality of light-emitting elements of the light-emitting unit. The communication circuit is for communicating with a remote device and is connected to the first flicker frequency controller and the second flicker frequency controller for operating the light-emitting unit based on information obtained from the remote device.

[0007] In some embodiments of the lighting module circuit, the second flicker frequency is lower than the first flicker frequency, hi one embodiment, the second flicker frequency is 40 Hz and the first flicker frequency is greater than 40 Hz.

[0008] In some embodiments of the lighting module circuit, the first flicker frequency is less than the second flicker frequency, hi one embodiment, the first flicker frequency is 40 Hz and the second flicker frequency is greater than 40 Hz.

[0009] In some embodiments of the lighting module circuit, the lighting module circuit further includes a selector circuit having an input selection terminal connected to the first output terminal of the composite flicker frequency circuit and a plurality of output selection terminals connected to each of the plurality of light-emitting elements, and the composite flicker frequency circuit controls the selector circuit to output the first output signal to one of the plurality of light-emitting elements via one of the plurality of output selection terminals.

[0010] In some embodiments of the lighting module circuit, the lighting module circuit further comprises a communication circuit for communicating with a remote device, the communication circuit being coupled to the composite flicker frequency circuit and outputting control information for operating the lighting unit based on information obtained from the remote device. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a schematic diagram illustrating a lighting module circuit according to an embodiment of the present disclosure.

[0012] [Figure 2] FIG. 1 is a schematic diagram illustrating a lighting module according to an embodiment of the present disclosure.

[0013] [Figure 3] 3 is a schematic diagram illustrating an embodiment of the lighting module shown in FIG. 2.

[0014] [Figure 4A] FIG. 10 shows an example illustrating that the light intensity output of all light-emitting units is flicker-free.

[0015] [Figure 4B] FIG. 1 shows an example of a flicker light intensity output at a frequency.

[0016] [Figure 4C] FIG. 1 shows an example of a flicker light intensity output at a frequency.

[0017] [Figure 4D] FIG. 1 shows an example of a flicker light intensity output at a frequency.

[0018] [Figure 4E] FIG. 1 shows an example of a flicker light intensity output at a frequency.

[0019] [Figure 4F]FIG. 1 shows an example of a flicker light intensity output at a frequency.

[0020] [Figure 5] FIG. 10 is a schematic diagram illustrating a lighting module circuit according to another embodiment of the present disclosure.

[0021] [Figure 6] FIG. 1 is a schematic diagram illustrating an embodiment of a flicker frequency controller.

[0022] [Figure 7] FIG. 1 is a schematic diagram illustrating an embodiment of a phototherapy system using an illumination device. DETAILED DESCRIPTION OF THE INVENTION

[0023] In order to facilitate understanding of the objectives, features and effects of the present disclosure, embodiments are provided for detailed description of the present disclosure along with the accompanying drawings.

[0024] FIG. 1 illustrates a lighting module circuit according to an embodiment of the present disclosure. As illustrated in FIG. 1, the lighting module circuit 1 includes a light-emitting unit 10 and a composite flicker frequency circuit 20. The light-emitting unit 10 includes a plurality of light-emitting elements (e.g., designated LD1 through LDN, where N is an integer greater than 1) connected in series. The composite flicker frequency circuit 20 has at least one input terminal (e.g., designated N20) for receiving control information (e.g., via a control signal indicating the control information), a first output terminal (e.g., designated N21) for outputting a first output signal (e.g., designated S1) having a first flicker frequency, and a second output terminal (e.g., designated N22) for outputting a second output signal (e.g., designated S2) having a second flicker frequency different from the first flicker frequency.

[0025] The light emitting unit 10 is connected between a first terminal N11 and a second terminal N12. For example, the first terminal N11 is connected to a power terminal for receiving a power signal PS, and the second terminal N12 is connected to a second output terminal N22 of the composite flicker frequency circuit 20. The first output terminal N21 of the composite flicker frequency circuit 20 is connected to one of the plurality of light emitting elements LD1 to LDN of the light emitting unit 10 (for example, designated as LDx).

[0026] In this manner, the lighting module circuit 1 can control some or all of the light-emitting elements LD1-LDN to emit light at a composite flicker frequency including a first flicker frequency and a second flicker frequency. The lighting module circuit 1 can control the light-emitting elements LD1-LDN to emit light at the first flicker frequency and the second flicker frequency at their respective intensities. The synchronized composite flicker frequency can provide flicker-reduced or flicker-free lighting. The lighting module circuit 1 can be used to provide light stimulation for phototherapy and to provide lighting with reduced visual stress. This makes lighting devices based on the lighting module circuit 1 useful for daily life and work, as well as for research and development of future treatments or treatment devices.

[0027] The lighting module circuit 1 in Figure 1 can be considered as a circuit architecture for this purpose. Based on this circuit architecture, various embodiments can be provided as follows:

[0028] In one embodiment, the composite flicker frequency circuit 20 comprises a first flicker frequency controller 21 and a second flicker frequency controller 22. The first flicker frequency controller 21 is for outputting a first output signal S1 via a first output terminal N21, and the second flicker frequency controller 22 is for outputting a second output signal S2 via a second output terminal N22.

[0029] In one embodiment, the second flicker frequency is lower than the first flicker frequency, the second flicker frequency is 40 Hz, and the first flicker frequency is greater than 40 Hz.

[0030] In another embodiment, the first flicker frequency is lower than the second flicker frequency, the first flicker frequency is 40 Hz, and the second flicker frequency is greater than 40 Hz.

[0031] In some embodiments, one of the plurality of light-emitting elements LD1-LDN (e.g., designated LDx) connected to the first output terminal N21 of the composite flicker frequency circuit 20 is an intermediate one of the plurality of light-emitting elements LD1-LDN. Thus, the first output signal S1 can be applied to the intermediate one (LDx), causing a first portion of the light-emitting elements (e.g., the previous one of LD1-LDx) to emit light whose intensity and frequency vary based on a composite flicker frequency including the first flicker frequency and the second flicker frequency. At the same time, a second portion of the light-emitting elements (e.g., LDx-LDn) emit light whose intensity and frequency vary based on a single flicker frequency, e.g., the second flicker frequency.

[0032] In some embodiments, the composite flicker frequency circuit 20 outputs a first current signal that varies according to a first flicker frequency as a first output signal S1, and outputs a second current signal that varies according to a second flicker frequency as a second output signal S2.

[0033] In some embodiments, the lighting module circuit 1 further includes a communication circuit (e.g., 300 in FIG. 2 ) for communicating with a remote device, the communication circuit being coupled to the composite flicker frequency circuit 20 and outputting control information for operating the lighting unit based on information obtained from the remote device. The communication circuit can be realized using a wired or wireless communication circuit (e.g., infrared, Bluetooth communication circuit) or a network communication chip (e.g., a chip compliant with Wi-Fi compliant communication), etc. The remote device can be a wired or wireless remote controller, or a computing device (e.g., a mobile phone, a tablet computer, a computer, etc.).

[0034] FIG. 2 is a schematic diagram illustrating a lighting module according to an embodiment of the present disclosure. The lighting module 2 is an embodiment based on the lighting module circuit 1 shown in FIG. 1. As shown in FIG. 2, the lighting module 2 includes a light-emitting unit 200, a first flicker frequency controller 400, a second flicker frequency controller 500, and a communication unit 300. The light-emitting unit 200 includes a plurality of light-emitting elements (e.g., light-emitting diodes (LEDs)) LD1 to LD8 connected in series. The embodiments of the present disclosure are not limited to these examples. For example, the light-emitting unit 200 can be realized to include more or fewer LEDs.

[0035] The first flicker frequency controller 400 has a first output terminal for outputting a first output signal having a first flicker frequency (e.g., 40 Hz). The second flicker frequency controller 500 has a second output terminal for outputting a second output signal having a second flicker frequency (e.g., 80 Hz or greater) greater than the first flicker frequency (e.g., 40 Hz). The first flicker frequency controller 400 or the second flicker frequency controller 500 may be implemented based on pulse width modulation.

[0036] The light emitting unit 200 is connected between the power supply unit 100 and the second output terminal of the second flicker frequency controller 500. For example, the power supply unit 100 may be a power adapter, an AC / DC power supply, or a battery, and supplies DC power to the light emitting unit 200.

[0037] A first output terminal of the first flicker frequency controller 400 is connected to one (e.g., LD3) of the plurality of light emitting elements LD1 to LD8 of the light emitting unit 200. For example, as shown in FIG. 2, the first output terminal of the first flicker frequency controller 400 is connected to the anode of the light emitting element LD3, or to another light emitting element such as LD4 or LD5.

[0038] The communication unit 300 is used for communication with a remote device (also referred to as an operation control unit 600), and is connected to the first flicker frequency controller 400 and the second flicker frequency controller 500 to operate the light emitting unit 200 based on information obtained from the operation control unit 600. The information may be control information including instructions, parameter settings, or selections from a user. The user can operate the operation control unit 600, for example, to turn on / off a light mode with a composite flicker frequency, or change the luminance ratio of some light emitting elements to emit light with a set intensity and flicker frequency.

[0039] By using the first flicker frequency controller 400 and the second flicker frequency controller 500, the lighting module 2 can be configured to allow some or all of the light-emitting elements LD1-LD8 to emit light at a set intensity and / or flicker frequency. For example, in FIG. 2, the light-emitting elements LD1-LD2 emit light whose intensity and frequency vary based on a composite flicker frequency including a first flicker frequency (e.g., 40 Hz) and a second flicker frequency (e.g., 80, 100, 120 Hz or higher). On the other hand, the light-emitting elements LD3-LD8 emit light whose intensity and frequency vary based on a single flicker frequency signal, e.g., the second flicker frequency (e.g., 80, 100, 120 Hz or higher), to produce a light source with a more stable frequency for the human eye. This is because the human eye cannot perceive higher flicker frequencies (e.g., 80, 100, 120 Hz or higher). In terms of human visual perception, the light intensities of the light-emitting elements LD1 to LD2 may be represented by the flicker intensity in FIG. 4B based on a first flicker frequency (e.g., 40 Hz), while the light intensities of the light-emitting elements LD3 to LD8 may be represented by the stable intensity in FIG. 4A.

[0040] As shown in FIG. 3, the first output terminal of the first flicker frequency controller 400 can be connected to the anode of the light-emitting element LD3 or LD6 via signal path 410 or 420. In an example circuit configuration using signal path 410, the light intensity and flicker conditions are as described above with reference to FIG. 2. In an example circuit configuration using signal path 420, the light-emitting elements LD1 to LD5 emit light whose intensity and frequency vary based on a composite flicker frequency including a first flicker frequency (e.g., 40 Hz) and a second flicker frequency (e.g., 80, 100, 120 Hz or higher). Meanwhile, the light-emitting elements LD6 to LD8 emit light whose intensity and frequency vary based on a single flicker frequency signal, e.g., a second flicker frequency (e.g., 80, 100, 120 Hz or higher), to generate a light source with a more stable frequency. With respect to human visual perception, the light intensities of the light-emitting elements LD1 to LD5 are shown as flicker intensities in Figure 4C based on a first flicker frequency (e.g., 40 Hz), while the light intensities of the light-emitting elements LD6 to LD8 are shown as stable intensities in Figure 4A.

[0041] 3, the first output terminal of the first flicker frequency controller 400 may be connected to the cathode of the light-emitting element LD8 via a signal path 430. In this way, all the light-emitting elements LD1 to LD8 emit light whose intensity and frequency vary based on the composite flicker frequency. In this case, in terms of human visual perception, the light intensity of the light-emitting unit 200 may be represented by a flicker intensity as shown in FIG. 4B, 4C, or 4D.

[0042] Furthermore, the lighting module 2 can be configured to turn off the first flicker frequency controller 400 and turn on the second flicker frequency controller 500, causing all light-emitting elements LD1-LD8 to emit light whose intensity and frequency vary based on a single flicker frequency. In this case, the light intensity of the light-emitting unit 200 may be represented by a stable intensity as shown in FIG. 4A in terms of human visual perception. Furthermore, in an example in which the second flicker frequency controller 500 outputs a second output signal based on pulse width modulation, adjusting the duty cycle of the second output signal functions as adjusting the brightness of the light-emitting unit 200 (or as a type of dimming control). The dimming control function of the second flicker frequency controller 500 (or a flicker frequency controller capable of outputting an output signal having a lower flicker frequency (e.g., 40 Hz) in the circuit architecture of FIG. 1) can also be applied to other circuit configurations (e.g., signal paths 410, 420, 430, or any other suitable configuration).

[0043] As explained above, Figures 4A, 4B, 4C, and 4D show that various circuit configurations or control methods (regarding changing the light intensity and / or flicker frequency settings) have different luminance performance.

[0044] As shown in FIGS. 4B and 4C, the total light intensity of the light emitted by the lighting module 2 can be configured by changing the total luminance ratio of some light-emitting elements that change at the same flicker frequency.

[0045] For example, in various scenarios such as work and daily life, by reducing the proportion of light-emitting elements in the lighting module 2 whose light intensity changes based on a first flicker frequency (e.g., 40 Hz), the lighting module 2 can create a lighting environment that is more comfortable for human eyes. In this way, for example, FIG. 4E shows that for the comfort of human eyes, visual stress can be reduced by adjusting the flicker portion of the light intensity of the lighting module 2 within a narrower range of the total light intensity (e.g., 5% (=100%-95%) or less).

[0046] In a phototherapy stimulation scenario, by increasing the proportion of light-emitting elements in the lighting module 2 whose light intensity varies based on a first flicker frequency (e.g., 40 Hz), the lighting module 2 can emit light to achieve a higher stimulation intensity. In this way, for example, FIG. 4F shows that the flicker portion of the light intensity of the lighting module 2 can be adjusted within a wider range of the total light intensity (e.g., 98% (=100%-2%)).

[0047] In one embodiment, varying the proportion of light-emitting elements in lighting module 2 that vary in light intensity based on a first flicker frequency (e.g., 40 Hz) can be accomplished by implementing at least one signal path (e.g., 410, 420, or 430 as shown in FIG. 3) that is selectable by a manually or electronically controlled switch. Following this approach, another embodiment of a lighting module circuit based on FIG. 1 is shown in FIG. 5.

[0048] 5 shows a lighting module circuit according to another embodiment of the present disclosure. As shown in FIG. 5, the lighting module circuit 3 includes a light-emitting unit 10A, a composite flicker frequency circuit 20A, and a selector circuit 30. Compared with the lighting module circuit 1 of FIG. 1, the lighting module circuit 3 further includes a selector circuit 30. The light-emitting unit 10A and the composite flicker frequency circuit 20A can be considered as corresponding embodiments shown in FIG. 1 or FIG. 2. The corresponding embodiments shown in FIG. 1 or FIG. 2 can be applied to this embodiment in any appropriate case.

[0049] In one embodiment, the selector circuit 30 has an input selection terminal connected to the first output terminal S1 of the composite flicker frequency circuit 20A and a plurality of output selection terminals connected to each of the plurality of light-emitting elements of the light-emitting unit 10A. The composite flicker frequency circuit 20A controls the selector circuit 30 to output the first output signal to one of the plurality of light-emitting elements of the light-emitting unit 10A via one of the plurality of output selection terminals. The selector circuit 30 can be implemented using, for example, a multiplexer, a switching device, a switch, etc.

[0050] 5, the selector circuit 30 has three output selection terminals connected to three nodes of the series-connected light-emitting elements (e.g., 10 in FIG. 1 and 200 in FIG. 2) of the light-emitting unit 10A via three signal paths SP1, SP2, and SP3, respectively. By controlling the selector circuit 30, a first output signal S1 is selectively applied to the corresponding node of the light-emitting unit 10A. For example, when the signal path SP1 is selected, a portion of the plurality of light-emitting elements of the light-emitting unit 10A (designated P1) emits light whose intensity and frequency vary based on a composite flicker frequency including a first flicker frequency and a second flicker frequency, while portions P2 and P3 of the plurality of light-emitting elements of the light-emitting unit 10A emit light whose intensity and frequency vary based on a single flicker frequency, e.g., the second flicker frequency. When signal path SP2 is selected, portions P1 and P2 of the plurality of light-emitting elements of the light-emitting unit 10A emit light whose intensity and frequency vary based on the composite flicker frequency, while portion P3 of the plurality of light-emitting elements of the light-emitting unit 10A emits light whose intensity and frequency vary based on a single flicker frequency. In this way, the proportion of light-emitting elements in the lighting module circuit 3 whose light intensity varies based on a first flicker frequency (e.g., 40 Hz) can be selectively changed.

[0051] Therefore, the circuit architecture of the lighting module circuit 3 provides more flexibility for adjusting or configuring the ratio of light emitting elements whose light intensity varies based on the first flicker frequency (eg, 40 Hz).

[0052] FIG. 6 illustrates an embodiment of a flicker frequency controller. As shown in FIG. 6, the flicker frequency controller 700 includes a pulse-width modulation (PWM) generator 710, a current control unit 720, an amplifier 730, and a comparator 740. The PWM generator 710 receives a control signal, which may indicate a value corresponding to the duty cycle of the PWM signal, and outputs a PWM signal at a certain flicker frequency in response to the control signal. The current control unit 720 outputs a first signal and a second signal in response to the PWM signal. The amplifier 730 amplifies the first signal from the current control unit 720 as an output signal of the flicker frequency controller 700 and applies it to the light-emitting element. The comparator 740 receives the second signal and outputs a feedback signal to the PWM generator 710. In FIG. 6, the PWM generator 710 performs pulse-width modulation, and the current control unit 720 converts the current signal into a voltage signal. The voltage and current signals are synchronized via amplifier 730 and comparator 740, and the feedback signal is fed back to PWM generator 710. This circuit approach shown in Figure 6 can be applied to implement a flicker frequency controller or circuit (e.g., 20 in Figure 1 or 20A in Figure 5, or 400, 500 in Figures 2-3). By using a multiple flicker frequency circuit, LED strings can be utilized to simultaneously illuminate at multiple frequencies with reduced or no flicker.

[0053] In some embodiments, the flicker frequency controller can be implemented using an amplifier, a comparator, a feedback controller, a buck-boost controller, a constant current controller, a linear voltage regulator, and a PWM generator.

[0054] In some embodiments, the flicker frequency controller 700 can be implemented as a variable flicker frequency circuit, for example, via an adjustable resistor or other adjustable electronic component. Such flexibility to change the flicker frequency, especially lower flicker frequencies (such as 40 Hz), is expected to be useful in future phototherapy developments, allowing for continuous validation of health-improving effects with different flicker frequencies.

[0055] In addition to the positive effects of 40 Hz light flickering on the human brain, it has been observed that exposure to flicker frequencies in the 3-7 Hz range can easily induce hypnotic states in patients. The experimental group also received 15 minutes of audiovisual stimulation using a sound and light stimulator set to an alpha frequency of 10 Hz. This group experienced a significant increase in relaxation and reached a state of complete relaxation. Regarding lighting module circuits, variable flicker frequency lights could be useful for such research. By adjusting the flicker rate within a specific frequency range (such as alpha or theta frequencies), researchers can examine the effects on brain state, relaxation, and hypnotic effects.

[0056] FIG. 7 shows an embodiment of a phototherapy system using a lighting device. In FIG. 7, the lighting device 1010 may include a lamp circuit board and a lamp mechanical structure. The lighting device 1010 (also referred to as a lamp) is a downlight having a shell, and the lamp shell may be a downlight, a lamp, a spotlight, a ceiling light, a bulb, or other type. The lighting device 1010 is based on FIG. 1 or FIG. 2 and includes a communication unit 300 connected to an operation control unit 600 via a wired or wireless method, including but not limited to Bluetooth, Wi-Fi, Bluetooth mesh, an infrared remote control, a 2.4G wireless remote control, a wired switch, etc. The operation control unit 600 may be connected to a control system 1900 (e.g., a computing device) using a mobile device application, a panel control, a remote control, or a wired interface, including but not limited to RJ-45 or RS-232.

[0057] The communication unit 300 in the lighting device 1010 can be externally connected to the sensing device 1700. The lighting device 1010 can be configured to activate its lighting function and / or flicker frequency stimulation function in response to a user 1810 entering the lighting area, and the sensing device 1700 can detect the presence of a human in the lighting area and notify the lighting device 1010 of the detection result. The communication unit 300 can transmit usage information (e.g., daily usage time and flicker frequency usage) to the operation control unit 600 and record the stimulation frequency and usage time. The user 1810 can also transmit data from the lighting device 1010 or an external vital signs device 1800 (e.g., a smart ring or smart watch) for the user 1810 to the cloud database device 1910 via the operation control unit 600 or the control system 1900 for storage. Through trend analysis and comparison of the data and subsequent diagnostic tests of the user 1810, the setting parameters of the phototherapy system can be gradually optimized to achieve better results.

[0058] As described above, an embodiment of the present disclosure provides a lighting module circuit that, in addition to the basic function of lighting, provides a user with a stimulating effect through light at a certain flicker frequency, reducing visual stress and preventing interference with the user's daily life. The circuit architecture of the lighting module circuit is used to flash some or all of the multiple light-emitting elements at a specific frequency. The communication unit can optionally communicate with an operation control unit or a local system to adjust the light intensity provided by the lighting module circuit. By integrating time data, the improvement achieved by the user through frequency stimulation can be tracked and compared.

[0059] While the present disclosure has been described in terms of specific embodiments, numerous modifications and variations may be made by those skilled in the art without departing from the scope and spirit of the present disclosure as set forth in the claims.

Claims

1. a light-emitting unit including a plurality of light-emitting elements connected in series; a composite flicker frequency circuit having at least one input terminal for receiving control information, and having a first output terminal for outputting a first output signal having a first flicker frequency, and a second output terminal for outputting a second output signal having a second flicker frequency different from the first flicker frequency; The light emitting unit is connected between a power terminal for receiving a power signal and the second output terminal of the composite flicker frequency circuit, and the first output terminal of the composite flicker frequency circuit is connected to one of the plurality of light emitting elements of the light emitting unit; Lighting module circuit.

2. The composite flicker frequency circuit comprises: a first flicker frequency controller for outputting the first output signal via the first output terminal; a second flicker frequency controller for outputting the second output signal via the second output terminal; 10. The lighting module circuit of claim 1.

3. The lighting module circuit of claim 1 , wherein the second flicker frequency is lower than the first flicker frequency.

4. The lighting module circuit of claim 3 , wherein the second flicker frequency is 40 Hz and the first flicker frequency is greater than 40 Hz.

5. The lighting module circuit of claim 1 , wherein the first flicker frequency is lower than the second flicker frequency.

6. 6. The lighting module circuit of claim 5, wherein the first flicker frequency is 40 Hz and the second flicker frequency is greater than 40 Hz.

7. 2. The lighting module circuit of claim 1, wherein the composite flicker frequency circuit outputs a first current signal that varies according to the first flicker frequency as the first output signal, and outputs a second current signal that varies according to the second flicker frequency as the second output signal.

8. 3. The lighting module circuit of claim 2, wherein the one of the plurality of light-emitting elements connected to the first output terminal of the second flicker frequency controller is an intermediate one of the plurality of light-emitting elements, such that a first portion of the light-emitting elements emit light whose intensity and frequency vary based on a composite flicker frequency including the first flicker frequency and the second flicker frequency, and a second portion of the light-emitting elements emit light whose intensity and frequency vary based on the second flicker frequency, which is a single flicker frequency.

9. a selector circuit having an input selection terminal connected to the first output terminal of the composite flicker frequency circuit and a plurality of output selection terminals connected to the plurality of light-emitting elements, respectively; the composite flicker frequency circuit controls the selector circuit to output the first output signal to the one of the plurality of light-emitting elements via one of the plurality of output selection terminals; 10. The lighting module circuit of claim 1.

10. The lighting module circuit of claim 1 , wherein the composite flicker frequency circuit controls the light emitting element to emit light at the first flicker frequency and the second flicker frequency with respective intensities for illumination.

11. 2. The lighting module circuit of claim 1, further comprising: a communication circuit for communicating with a remote device, the communication circuit being coupled to the composite flicker frequency circuit and outputting the control information for operating the light emitting unit based on information obtained from the remote device.

12. a light-emitting unit including a plurality of light-emitting elements connected in series; a first flicker frequency controller having a first output terminal for outputting a first output signal having a first flicker frequency; a second flicker frequency controller having a second output terminal for outputting a second output signal having a second flicker frequency different from the first flicker frequency, wherein the light emitting unit is connected between a power supply terminal and the second output terminal of the second flicker frequency controller, and the first output terminal of the first flicker frequency controller is connected to one of the plurality of light emitting elements of the light emitting unit; a communication circuit for communicating with a remote device, the communication circuit being coupled to the first flicker frequency controller and the second flicker frequency controller to operate the light emitting unit based on information obtained from the remote device; Lighting module circuit.

13. The lighting module circuit of claim 12 , wherein the second flicker frequency is lower than the first flicker frequency.

14. 14. The lighting module circuit of claim 13, wherein the second flicker frequency is 40 Hz and the first flicker frequency is greater than 40 Hz.

15. The lighting module circuit of claim 12 , wherein the first flicker frequency is lower than the second flicker frequency.

16. 16. The lighting module circuit of claim 15, wherein the first flicker frequency is 40 Hz and the second flicker frequency is greater than 40 Hz.

17. 13. The lighting module circuit of claim 12, wherein the first flicker frequency controller and the second flicker frequency controller control the light emitting element to emit light at the first flicker frequency and the second flicker frequency with respective intensities to provide illumination.

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