Lighting module circuit

TWI941139BActive Publication Date: 2026-10-01HUKUI BIOTECHNOLOGY CORP
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Patent Information

Application Number
TW114112342
Authority / Receiving Office
TW · TW
Patent Type
Patents
Current Assignee / Owner
Priority Date
2024-11-20
Filing Date
2025-03-31
Publication Date
2026-10-01
Estimated Expiration
2045-03-30

AI Technical Summary

Technical Problem

Existing light-emitting devices with specific flickering frequencies cause visual stress and hinder normal activities due to flickering stimulation, limiting their use in environments requiring illumination and phototherapy.

Method used

A lighting module circuit that controls multiple light-emitting devices to emit light at composite flicker frequencies, allowing for reduced or flicker-free illumination by combining different flicker frequencies and intensities, using a composite flashing frequency circuit and controllers to manage light output.

Benefits of technology

Provides illumination that stimulates users while reducing visual stress, enabling comfortable use in daily life and phototherapy applications without disrupting normal activities.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

A lighting module circuit includes a light-emitting unit and a composite flashing frequency circuit. The light-emitting unit includes multiple light-emitting devices connected in series. The composite flashing frequency circuit has at least one input terminal, a first output terminal for outputting a first output signal having a first flashing frequency, and a second output terminal for outputting a second output signal having a second flashing frequency different from the first flashing 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 multiple light-emitting devices.
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Description

[Technical Field]

[0001] This disclosure relates to lighting module circuits, and more particularly to lighting module circuits that generate composite flicker frequencies. [Previous Technology]

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

[0003] Phototherapy using flickering light stimulation has become a promising non-invasive neuromodulation strategy. It utilizes light with specific flickering frequencies to stimulate cells in the body, potentially alleviating neuropsychiatric disorders. Various flickering light devices have been developed. The flickering light source is used to induce corresponding frequencies in the brain. For example, 40 Hz flickering light therapy is an emerging treatment for Alzheimer's disease, aiming to treat neurological disorders by modulating brainwave rhythms. However, existing light sources with specific flickering frequencies can cause users' eyes to experience flickering stimulation, and they are unable to perform normal daily activities and work while receiving this stimulation. [Summary of the Invention]

[0004] One object of this disclosure is to provide a lighting module circuit capable of controlling multiple light-emitting devices to emit light at a composite flicker frequency. In some embodiments of this lighting module circuit, the lighting module circuit can control the light-emitting devices 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 devices to emit light at different intensities at the first flicker frequency and the second flicker frequency, respectively, for illumination. By introducing a composite flicker frequency, reduced flicker or flicker-free illumination can be achieved. In this way, the lighting module circuit can provide illumination that actively stimulates the user and reduces visual stress.

[0005] According to some embodiments of this disclosure, the lighting module circuit includes a light-emitting unit and a composite flashing frequency circuit. The light-emitting unit includes a plurality of light-emitting devices connected in series. The composite flashing 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 flashing frequency, and a second output terminal for outputting a second output signal having a second flashing frequency different from the first flashing frequency. The light-emitting unit is coupled between a power supply terminal for receiving a power signal and the second output terminal of the composite flashing frequency circuit, and the first output terminal of the composite flashing frequency circuit is coupled to one of the light-emitting devices of the light-emitting unit.

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

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

[0008] In some embodiments of the lighting module circuit, the first flashing frequency is lower than the second flashing frequency. In one embodiment, the first flashing frequency is 40 Hz; the second flashing 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 coupled to a first output terminal of the composite flashing frequency circuit, and a plurality of output selection terminals coupled to each of the light-emitting devices, wherein the composite flashing frequency circuit controls the selector circuit to output the first output signal to the light-emitting device through one of the output selection terminals.

[0010] In some embodiments of the lighting module circuit, the lighting module circuit further includes a communication circuit for communicating with a remote device and coupled to the composite flashing frequency circuit to output the control information, thereby operating the light-emitting unit based on the information obtained from the remote device.

Implementation Method

[0012] To fully understand the purpose, features, and effects of this disclosure, the following specific embodiments, in conjunction with the accompanying drawings, will be used to provide a detailed explanation of this disclosure, as follows:

[0013] FIG1 shows a lighting module circuit according to an embodiment of the present disclosure. As shown in FIG1, the lighting module circuit 1 includes a light-emitting unit 10 and a composite flashing frequency circuit 20. The light-emitting unit 10 includes a plurality of light-emitting devices connected in series (e.g., denoted as LD1-LDN, where N is an integer greater than 1). The composite flashing frequency circuit 20 has at least one input terminal (e.g., denoted as N20) for receiving control information (e.g., through a control signal representing the control information); a first output terminal (e.g., denoted as N21) for outputting a first output signal having a first flashing frequency (e.g., denoted as S1); and a second output terminal (e.g., denoted as N22) for outputting a second output signal having a second flashing frequency different from the first flashing frequency (e.g., denoted as S2).

[0014] The light-emitting unit 10 is coupled between a first terminal N11 and a second terminal N12. For example, the first terminal N11 is coupled to a power supply terminal to receive a power signal PS, while the second terminal N12 is coupled to the second output terminal N22 of the composite flashing frequency circuit 20. The first output terminal N21 of the composite flashing frequency circuit 20 is coupled to one of the light-emitting devices LD1-LDN of the light-emitting unit 10 (e.g., denoted as LDx).

[0015] In this manner, the lighting module circuit 1 can control some or all of the light-emitting devices LD1-LDN to emit light at a composite flicker frequency that includes the first flicker frequency and the second flicker frequency. The lighting module circuit 1 can control the light-emitting devices LD1-LDN to emit light at different intensities at the first flicker frequency and the second flicker frequency, respectively, for illumination. By introducing the composite flicker frequency, less flicker or flicker-free illumination can be achieved. This lighting module circuit 1 can be used to provide photostimulation for phototherapy while providing illumination with lower visual stress, so that the lighting device based on the lighting module circuit 1 can be used for living, working, or even, for example, its research, for the development of future treatments, or for use in therapeutic devices.

[0016] The lighting module circuit 1 in Figure 1 can be considered as a circuit architecture for this purpose. Based on this circuit architecture, the following various embodiments can be provided.

[0017] In one embodiment, the composite flashing frequency circuit 20 includes: a first flashing frequency controller 21 and a second flashing frequency controller 22. The first flashing frequency controller 21 is used to output a first output signal S1 through a first output terminal N21; the second flashing frequency controller 22 is used to output a second output signal S2 through a second output terminal N22.

[0018] In one embodiment, the second flashing frequency is lower than the first flashing frequency; the second flashing frequency is 40 Hz; and the first flashing frequency is greater than 40 Hz.

[0019] In another embodiment, the first flashing frequency is lower than the second flashing frequency; the first flashing frequency is 40 Hz; and the second flashing frequency is greater than 40 Hz.

[0020] In some embodiments, one of the light-emitting devices LD1-LDN coupled to the first output terminal N21 of the composite scintillation frequency circuit 20 (e.g., denoted by LDx) is one of the intermediate light-emitting devices LD1-LDN. Therefore, the first output signal S1 can be applied to this intermediate one (LDx), causing the first part of the light-emitting device (e.g., the one before LD1 to LDx) to emit light with varying intensity and frequency based on a composite scintillation frequency including the first scintillation frequency and the second scintillation frequency. At the same time, the second part of the light-emitting device (e.g., from LDx to LDN) emits light with varying intensity and frequency based on a single scintillation frequency (e.g., the second scintillation frequency).

[0021] In some embodiments, the composite flashing frequency circuit 20 outputs a first current signal that varies with the first flashing frequency as a first output signal S1, and outputs a second current signal that varies with the second flashing frequency as a second output signal S2.

[0022] In some embodiments, the lighting module circuit 1 further includes a communication circuit (e.g., 300 in FIG2) for communicating with a remote device and coupled to the composite flashing frequency circuit 20 to output control information for the operation of the light-emitting unit based on information obtained from the remote device. This communication circuit can be implemented using wired or wireless communication circuits (e.g., infrared, Bluetooth communication circuits) or network communication chips (e.g., chips supporting Wi-Fi compatible communication). The remote device can be a wired or wireless remote control, or a computing device (e.g., a mobile phone, tablet computer, computer, etc.).

[0023] FIG2 is a schematic diagram showing 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 FIG1. ​​As shown in FIG2, the lighting module 2 includes a light-emitting unit 200, a first flashing frequency controller 400, a second flashing frequency controller 500, and a communication unit 300. The light-emitting unit 200 includes a plurality of light-emitting devices (e.g., light-emitting diodes (LEDs)) LD1-LD8 connected in series. Implementations of the present disclosure are not limited to these examples. For example, the light-emitting unit 200 can be implemented to include more or fewer LEDs.

[0024] The first flashing frequency controller 400 has a first output terminal for outputting a first output signal having a first flashing frequency (e.g., 40 Hz). The second flashing frequency controller 500 has a second output terminal for outputting a second output signal having a second flashing frequency (e.g., 80 Hz or higher) greater than the first flashing frequency (e.g., 40 Hz). The first flashing frequency controller 400 or the second flashing frequency controller 500 can be implemented based on pulse width modulation.

[0025] The light-emitting unit 200 is coupled between the power supply unit 100 and the second output terminal of the second flashing frequency controller 500. For example, the power supply unit 100 may be a power adapter, an AC / DC power supply or a battery, and provides DC power to the light-emitting unit 200.

[0026] The first output terminal of the first flashing frequency controller 400 is coupled to one of the light-emitting devices LD1-LD8 of the light-emitting unit 200 (e.g., LD3). For example, the first output terminal of the first flashing frequency controller 400 is coupled to the anode of the light-emitting device LD3 as shown in FIG2, or coupled to another light-emitting device such as LD4, LD5, etc.

[0027] The communication unit 300 is used to communicate with a remote device (or operation control unit 600) and is coupled to the first flashing frequency controller 400 and the second flashing frequency controller 500 to operate the light-emitting unit 200 based on information obtained from the operation control unit 600. This information may include control information such as instructions, parameter settings, or selections from the user. The user can operate the operation control unit 600, for example, to turn on or off the mode of the light using a composite flashing frequency, change the brightness ratio of certain light-emitting devices, and emit light with a set intensity and flashing frequency.

[0028] Through the first flicker frequency controller 400 and the second flicker frequency controller 500, the lighting module 2 can be configured to cause some or all of the light-emitting devices LD1-LD8 to emit light at a set intensity and / or a set flicker frequency. For example, in FIG2, the light-emitting devices LD1-LD2 emit light based on the intensity and frequency variation of a composite flicker frequency including the first flicker frequency (e.g., 40 Hz) and the second flicker frequency (e.g., 80, 100, 120 Hz or above). At the same time, the light-emitting devices LD3-LD8 emit light based on the intensity and frequency variation of a single flicker frequency signal (e.g., the second flicker frequency (e.g., 80, 100, 120 Hz or above)) to generate a light source with a frequency that is more stable to the human eye, because the human eye cannot perceive higher flicker frequencies (e.g., 80, 100, 120 Hz or above). In terms of human visual perception, the light intensity of the light-emitting devices LD1-LD2 is represented in Figure 4B as the intensity of flickering based on a first flickering frequency (e.g., 40 Hz), while the light intensity of the light-emitting devices LD3-LD8 can be represented in Figure 4A as a stable intensity.

[0029] As shown in FIG3, the first output terminal of the first flicker frequency controller 400 can be coupled to the anode of the light-emitting device LD3 or LD6 through signal path 410 or 420. In an example of the circuit configuration using signal path 410, the light intensity and flicker situation have been discussed above with reference to FIG2. In an example of the circuit configuration using signal path 420, the light-emitting devices LD1-LD5 emit light with varying intensity and frequency based on a composite flicker frequency including the first flicker frequency (e.g., 40 Hz) and the second flicker frequency (e.g., 80, 100, 120 Hz or above). At the same time, the light-emitting devices LD6-LD8 emit light with varying intensity and frequency based on a single flicker frequency signal, such as the second flicker frequency (e.g., 80, 100, 120 Hz or above), to generate a light source with a more stable frequency. In terms of human visual perception, the light intensity of light-emitting devices LD1-LD5 is represented in Figure 4C as the intensity of flickering based on the first flickering frequency (e.g., 40 Hz), while the light intensity of light-emitting devices LD6-LD8 is represented in Figure 4A as a stable intensity.

[0030] Additionally, as shown in FIG3, the first output terminal of the first flicker frequency controller 400 can be coupled to the cathode of the light-emitting device LD8 via the signal path 430. In this way, all light-emitting devices LD1-LD8 emit light that varies in intensity and frequency based on the composite flicker frequency. In this case, from the perspective of human visual perception, the light intensity of the light-emitting unit 200 can be represented by the flicker intensity shown in FIG4B, FIG4C or FIG4D.

[0031] Furthermore, the lighting module 2 can also be configured to turn off the first flicker frequency controller 400 and turn on the second flicker frequency controller 500, causing all light-emitting devices LD1-LD8 to emit light with varying intensity and frequency based on a single flicker frequency. In this case, the light intensity of the light-emitting unit 200 can be represented by the stable intensity shown in FIG4A in terms of human visual perception. In addition, in an example where the second flicker frequency controller 500 outputs the second output signal based on pulse width modulation, adjusting the duty cycle of the second output signal serves to adjust the brightness of the light-emitting unit 200 (or, in terms of a dimming control). The dimming control function of the second flicker frequency controller 500 (or the flicker frequency controller in the circuit architecture of FIG1 that can output a lower flicker frequency (e.g., 40 Hz) output signal) can also operate in other circuit configurations (e.g., relative to signal paths 410, 420, 430 or any suitable configuration).

[0032] As discussed above, Figures 4A, 4B, 4C and 4D show that various circuit configurations or control methods (regarding the setting of changing light intensity and / or flicker frequency) have different brightness performance.

[0033] As shown in Figures 4B and 4C, the total light intensity emitted by the lighting module 2 is configured by changing the total brightness ratio of the partial light-emitting devices that vary at the same flicker frequency.

[0034] For example, in different scenarios, such as work or daily life, reducing the proportion of light-emitting devices in the lighting module 2 that vary their light intensity based on a first flicker frequency (e.g., 40 Hz) enables the lighting module 2 to make the lighting environment more comfortable for the human eye. In this way, for example, as shown in Figure 4E, the flicker portion of the light intensity of the lighting module 2 can be adjusted within a small range of the total light intensity (e.g., 5% (= 100%-95%) or less) to achieve eye comfort and reduce visual stress.

[0035] In the context of phototherapy stimulation, the proportion of light-emitting devices in the illumination module 2 that vary their light intensity based on a first flicker frequency (e.g., 40 Hz) is increased, enabling the illumination module 2 to emit light to achieve a higher stimulation intensity. In this way, for example, as shown in Figure 4F, the flickering portion of the light intensity of the illumination module 2 can be adjusted over a large range of the total light intensity (e.g., 98% (=100%-2%)).

[0036] In one embodiment, changing the proportion of light-emitting devices in the lighting module 2 that vary their 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. 2), which is selected by a switch controlled manually or electronically. Accordingly, FIG. 5 shows another embodiment based on the lighting module circuit of FIG. 1.

[0037] FIG. 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 flashing 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 the selector circuit 30. The light-emitting unit 10A and the composite flashing frequency circuit 20A can be considered as embodiments of the corresponding portions shown in FIG. 1 or FIG. 2. Where appropriate, embodiments of the corresponding portions shown in FIG. 1 or FIG. 2 can be applied to this embodiment.

[0038] In one embodiment, the selector circuit 30 has an input selection terminal coupled to a first output terminal N21 of the composite flashing frequency circuit 20A, and multiple output selection terminals coupled to individual light-emitting devices of the light-emitting unit 10A. The composite flashing frequency circuit 20A controls the selector circuit 30 to output a first output signal to one of the light-emitting devices of the light-emitting unit 10A through one of the output selection terminals. The selector circuit 30 can be implemented, for example, by using a multiplexer, a switching element, a switch, etc.

[0039] In FIG. 5, the selector circuit 30 has three output selection terminals, which are respectively coupled to three nodes of the series-connected light-emitting devices (e.g., 10 in FIG. 1; 200 in FIG. 2) of the light-emitting unit 10A through three signal paths SP1, SP2 and SP3. By controlling the selector circuit 30, the 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 light-emitting devices of the light-emitting unit 10A (denoted as P1) emits light with varying intensity and frequency based on a composite flashing frequency including the first flashing frequency and the second flashing frequency, while portions P2 and P3 of the light-emitting devices of the light-emitting unit 10A emit light with varying intensity and frequency based on a single flashing frequency (e.g., the second flashing frequency). When signal path SP2 is selected, portions P1 and P2 of the light-emitting devices of the light-emitting unit 10A emit light whose intensity and frequency vary based on a composite flicker frequency, while portion P3 of the light-emitting devices 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 devices in the lighting module circuit 3 that vary their light intensity based on the first flicker frequency (e.g., 40 Hz) can be selectively changed.

[0040] Therefore, the circuit architecture of the lighting module circuit 3 provides greater flexibility in adjusting or configuring the proportion of light-emitting devices that vary their light intensity based on the first flicker frequency (e.g., 40 Hz).

[0041] Figure 6 shows an embodiment of a flicker frequency controller. As shown in Figure 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 and outputs a PWM signal of the flicker frequency according to the control signal, wherein the control signal may represent a value corresponding to the duty cycle of the PWM signal. The current control unit 720 outputs a first signal and a second signal according to the PWM signal. The amplifier 730 amplifies the first signal from the current control unit 720 as the output signal of the flicker frequency controller 700 for application to a light-emitting device. The comparator 740 receives the second signal and outputs a feedback signal to the PWM generator 710. In Figure 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. The circuit configuration shown in Figure 6 can be used to implement a flicker frequency controller or circuit (e.g., 20 in Figure 1 or Figure 5; or 400, 500 in Figures 2 to 3). By utilizing a composite flicker frequency circuit, a string of LEDs can simultaneously provide less flickering or flicker-free illumination at a composite frequency.

[0042] In some embodiments, the flicker frequency controller can be implemented by using amplifiers, comparators, feedback controllers, buck-boost controllers, constant current controllers, linear voltage regulators and PWM generators.

[0043] In some embodiments, the flicker frequency controller 700 can also be implemented as a flicker frequency variable circuit, for example through an adjustable resistor or other adjustable electronic components. This flexibility in changing the flicker frequency, especially lower flicker frequencies (such as 40 Hz), is expected to play a role in the future development of phototherapy; and different flicker frequencies can continuously verify the health improvement effect.

[0044] In addition to the positive effects of 40 Hz light flickering on the human brain, it is understood that patients were observed to easily enter a hypnotic state when exposed to flickering frequencies in the 3-7 Hz range. Furthermore, the experimental group received fifteen minutes of audiovisual stimulation using a photo-sponge stimulator set to an alpha frequency of 10 Hz. This group showed a significantly improved level of relaxation and achieved a state of complete relaxation. For lighting module circuits, light with variable flickering frequencies is useful for this type of research. By adjusting the flicker rate within a specific frequency range (e.g., alpha or theta frequencies), researchers can explore its effects on brain state, relaxation, and hypnotic effects.

[0045] Figure 7 shows an embodiment of a phototherapy system using an illumination device. In Figure 7, the illumination device 1010 can be assembled from a circuit board of a lamp panel and the mechanical structure of the lamp. The illumination device 1010 (or lamp) is a downlight with a housing, which can be a downlight, table lamp, spotlight, ceiling light, bulb, or other type. The illumination device 1010 is based on Figure 1 or Figure 2 and has a communication unit 300, which is connected to the operation control unit 600 via wired or wireless means, including but not limited to Bluetooth, Wi-Fi, Bluetooth Mesh, infrared remote control, 2.4G wireless remote control, wired switch, etc. The operation control unit 600 can be connected to the control system 1900 (e.g., a computing device) using a mobile device application, panel control, or remote control, or using a wired interface (including but not limited to RJ-45, RS-232, etc.).

[0046] 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 flashing frequency stimulation function in response to the user 1810 entering the illuminated area, wherein the sensing device 1700 can detect whether there is a person or not in the illuminated area and inform the lighting device 1010 of the detection result. The communication unit 300 can transmit the usage status (e.g., daily usage time, flashing frequency usage, etc.) 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 the user 1810's external vital signs device 1800 (e.g., a smart ring or smartwatch) to the cloud database device 1910 for storage via the operation control unit 600 or the control system 1900. Through trend analysis and comparison of the data and subsequent diagnostic tests on the user 1810, the setting parameters of the phototherapy system can be gradually optimized to achieve better results.

[0047] Therefore, the embodiments disclosed herein provide a lighting module circuit that, in addition to having the basic function of illumination, can also provide a stimulating effect to the user through light of a flashing frequency, reducing visual stress without interfering with the user's daily life. The circuit architecture of the lighting module circuit is used to make some or all of the multiple light-emitting devices flash at a specific frequency. The communication unit can selectively communicate with the operation control unit or local system to adjust the light intensity provided by the lighting module circuit. By combining time data, the improvement effect obtained by the user through frequency stimulation can be tracked and compared.

[0048] Although the present disclosure has been described through specific embodiments, those skilled in the art can make various modifications and variations thereto without departing from the scope and spirit of the present disclosure as described in the claims. [Simplified Explanation of the Diagram]

[0011] FIG1 is a schematic diagram showing a lighting module circuit according to an embodiment of the present disclosure. FIG2 is a schematic diagram showing a lighting module according to an embodiment of the present disclosure. FIG3 is a schematic diagram showing an embodiment of the lighting module shown in FIG2. FIG4A is a diagram showing an example of light intensity output from the light-emitting unit with no flicker. FIG4B is a diagram showing an example of light intensity output flickering at a certain frequency. FIG4C is a diagram showing an example of light intensity output flickering at a certain frequency. FIG4D is a diagram showing an example of light intensity output flickering at a certain frequency. FIG4E is a diagram showing an example of light intensity output flickering at a certain frequency. FIG4F is a diagram showing an example of light intensity output flickering at a certain frequency. FIG5 is a schematic diagram showing a lighting module circuit according to another embodiment of the present disclosure. FIG6 is a schematic diagram showing an embodiment of a flicker frequency controller. FIG7 is a schematic diagram showing an embodiment of a system for phototherapy using a lighting device.

Claims

1. A lighting module circuit, comprising: A light-emitting unit includes multiple light-emitting devices connected in series; A composite flashing 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 flashing frequency, and a second output terminal for outputting a second output signal having a second flashing frequency different from the first flashing frequency, wherein the light-emitting unit is coupled between a power supply terminal for receiving a power supply signal and the second output terminal of the composite flashing frequency circuit, and the first output terminal of the composite flashing frequency circuit is coupled to one of the light-emitting devices of the light-emitting unit; And a selector circuit having an input selection terminal coupled to the first output terminal of the composite flashing frequency circuit, and a plurality of output selection terminals coupled to individual light-emitting devices among the light-emitting devices, wherein the composite flashing frequency circuit controls the selector circuit to output the first output signal to the light-emitting device through one of the output selection terminals.

2. The lighting module circuit as claimed in claim 1, wherein the composite flicker frequency circuit comprises: A first flashing frequency controller is used to output the first output signal through the first output terminal; And a second flashing frequency controller, used to output the second output signal through the second output terminal.

3. The lighting module circuit as claimed in claim 1, wherein the second flashing frequency is lower than the first flashing frequency.

4. The lighting module circuit as claimed in claim 3, wherein the second flashing frequency is 40 Hz and the first flashing frequency is greater than 40 Hz.

5. The lighting module circuit as claimed in claim 1, wherein the first flashing frequency is lower than the second flashing frequency.

6. The lighting module circuit as claimed in claim 5, wherein the first flashing frequency is 40 Hz and the second flashing frequency is greater than 40 Hz.

7. The lighting module circuit as claimed in claim 1, wherein the composite flashing frequency circuit outputs a first current signal that varies with the first flashing frequency as the first output signal, and outputs a second current signal that varies with the second flashing frequency as the second output signal.

8. The lighting module circuit of claim 1, wherein one of the light-emitting devices coupled to the first output terminal of the composite flicker frequency circuit is an intermediate light-emitting device, such that a first portion of the light-emitting devices emits light varying in intensity and frequency based on a composite frequency including the first flicker frequency and the second flicker frequency, and a second portion of the light-emitting devices emits light varying in intensity and frequency based on a single flicker frequency of the second flicker frequency.

9. The lighting module circuit as claimed in claim 1, wherein the composite flashing frequency circuit controls the light-emitting devices to emit light at the first flashing frequency and the second flashing frequency at their respective intensities for illumination.

10. The lighting module circuit as claimed in claim 1, further comprising: A communication circuit is used to communicate with a remote device and is coupled to the composite flashing frequency circuit to output control information for the operation of the light-emitting unit based on information obtained from the remote device.

11. A lighting module circuit, comprising: A light-emitting unit, comprising multiple light-emitting devices connected in series; a composite flicker frequency circuit, comprising a first flicker frequency controller and a second flicker frequency controller; The first flashing frequency controller has a first output terminal for outputting a first output signal having a first flashing frequency; the second flashing frequency controller has a second output terminal for outputting a second output signal having a second flashing frequency different from the first flashing frequency, wherein the light-emitting unit is coupled between a power supply terminal and the second output terminal of the second flashing frequency controller, and the first output terminal of the first flashing frequency controller is coupled to one of the light-emitting devices of the light-emitting unit; a communication circuit is used to communicate with a remote device and is coupled to the first flashing frequency controller and the second flashing frequency controller to operate the light-emitting unit based on information obtained from the remote device; And a selector circuit having an input selection terminal coupled to the first output terminal, and a plurality of output selection terminals coupled to individual light-emitting devices among the light-emitting devices, wherein the composite flashing frequency circuit controls the selector circuit to output the first output signal to the light-emitting device through one of the output selection terminals.

12. The lighting module circuit as claimed in claim 11, wherein the second flashing frequency is lower than the first flashing frequency.

13. The lighting module circuit as claimed in claim 12, wherein the second flashing frequency is 40 Hz and the first flashing frequency is greater than 40 Hz.

14. The lighting module circuit as claimed in claim 11, wherein the first flashing frequency is lower than the second flashing frequency.

15. The lighting module circuit as claimed in claim 14, wherein the first flashing frequency is 40 Hz and the second flashing frequency is greater than 40 Hz.

16. The lighting module circuit of claim 11, wherein the first flash frequency controller and the second flash frequency controller control the light-emitting devices to emit light at the first flash frequency and the second flash frequency at their respective intensities for illumination.

Citation Information

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