Protection circuit of laser light source module and stage lamp provided with protection circuit
By designing the protection circuit of the laser light source module in the stage lamp, the cooperation of the main driver module and the delayed protection module solves the problem of damage to the fluorescent wheels caused by the high temperature of the laser light source and the sudden power outage. Delayed power -off and improvement of safety.
Patent Information
- Application Number
- CN202323658824.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2033-12-29
AI Technical Summary
In existing stage lamps, the laser light source will generate high temperatures when working, causing the fluorescent color wheel to run at high speed in a high temperature environment. If the high-speed operation state is not reached, it is easy to cause the fluorescent powder on the fluorescent color wheel to burn and break suddenly. When electric, the fluorescent color wheel may stop rotating in advance, causing damage.
Design a protective circuit of a laser light source module, including the main driver module and delayed protection module, drive the fluorescent color wheel to rotate the fluorescent color wheel when the power supply is normal power supply through the main drive module, and charge the delayed protection module; when the power supply is power off, the power supply is power off. The delayed protection module continues to rotate the fluorescent color wheel by discharge, and the fluorescent wheels can be used to power off the fluorescent wheel compared to the laser light source.
Effectively avoid the fluorescent wheel damage caused by direct laser, improve the safety and service life of the fluorescent wheel, and achieve a delayed power -off effect through simple circuit settings.
Smart Images
Figure CN222423297U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of stage lamp manufacturing, and more specifically, to a protection circuit of a laser light source module and a stage lamp provided with the protection circuit. Background Art
[0002] Laser light sources have the advantages of good monochromaticity, strong directionality, and high brightness. Therefore, more and more stage lights use laser light sources as light sources. In the prior art, a laser light source module generally includes a laser light source and a fluorescent color wheel. The laser light source emits a laser, which is irradiated on a fluorescent color wheel coated with fluorescent powders of various colors, thereby exciting light beams of various colors. The excited light beams will pass through the filter disk in the laser light source module, and only the light beams with the same color as the filter can pass through, thereby obtaining a light beam of a specific color.
[0003] However, since the laser light source is a high-power device, it will generate extremely high temperatures during operation. Similarly, the emitted laser beam also has extremely high temperatures, which can burn and damage objects in close proximity. Therefore, components within the close range of the excitation light cannot be kept stationary. Therefore, the fluorescent color wheel is required to operate continuously at high speed in a high temperature environment during operation. If the fluorescent color wheel does not reach high-speed operation after the laser is turned on, the close-range high-temperature exposure will cause the fluorescent powder on the fluorescent color wheel to burn and cause damage.
[0004] Especially when the lamp encounters a sudden power outage, due to the differences between the laser light source and the fluorescent color wheel in the power supply circuit and the motor drive load and other various reasons, the fluorescent color wheel often stops rotating before the laser is turned off, causing the fluorescent color wheel to burn and be damaged. Utility Model Content
[0005] The utility model aims to overcome at least one defect of the above-mentioned prior art and provides a protection circuit of a laser light source module and a stage light equipped with the same, so that the fluorescent color wheel in the stage light equipped with the laser light source module is powered off with a delay compared to the laser light source.
[0006] The utility model provides a protection circuit of a laser light source module, the laser light source module comprises a laser light source for emitting excitation light and a fluorescent color wheel for receiving excitation light and producing excited light, the protection circuit is connected to a power supply module and the fluorescent color wheel to drive the fluorescent color wheel to rotate, the power supply module supplies power to the laser light source and the fluorescent color wheel at the same time; the protection circuit comprises a main driving module and a delay protection module, the input end of the main driving module is connected to the power supply module, and the output end thereof is respectively connected to the input end and the ground end of the fluorescent color wheel; the delay protection module is respectively connected to the input end and the ground end of the fluorescent color wheel;
[0007] The delay protection module includes a plurality of capacitors connected in parallel; when the power supply module supplies power normally, the main driving module drives the fluorescent color wheel to rotate stably and charges the capacitor; when the power supply module is powered off, the capacitor is discharged, and the delay protection module is switched to drive the fluorescent color wheel to rotate, thereby achieving delayed power-off of the fluorescent color wheel compared to the laser light source.
[0008] In the present technical scheme, a protection circuit is added between the fluorescent color wheel and the power module, wherein the protection circuit includes a main driving module and a delay protection module. When the power module is powered normally, the main driving module is used to ensure the stable operation of the fluorescent color wheel, and at the same time, energy is stored for the delay protection module. When the power module is powered off, the delay protection module is used to drive the fluorescent color wheel to rotate continuously and stably for a certain period of time, thereby achieving the delayed power-off effect of the fluorescent color wheel compared to the laser light source, avoiding damage to the fluorescent color wheel caused by direct laser exposure, and improving the safety of the fluorescent color wheel and extending the service life of the fluorescent color wheel through simple circuit settings. Specifically, in the present technical solution, the time-delay protection module is configured as a plurality of capacitors connected in parallel to the main driving module and to the fluorescent color wheel, and the bypass capacitor's energy storage and discharge characteristics are utilized to achieve that when the main driving module is powered off, the power supply can be quickly and automatically switched to the time-delay protection module, thereby ensuring that the operating state of the fluorescent color wheel does not change at the moment the power module is powered off, and the delayed power-off effect of the fluorescent color wheel is achieved quickly, conveniently and effectively; secondly, the time-delay protection module stores energy and supplies power by connecting a plurality of capacitors in parallel, and the capacity and number of the capacitors used can be freely adjusted to match the power supply voltage of the fluorescent color wheel used and the required delayed power-off time design. At the same time, when the setting space of the protection circuit in the device is limited, it can also be conveniently combined and changed to match the setting space, thereby improving the convenience and economy of use.
[0009] Furthermore, the delay protection module further comprises at least one electrolytic capacitor, the positive electrode of the electrolytic capacitor is connected to the input end of the fluorescent color wheel, and the negative electrode of the electrolytic capacitor is connected to the ground end.
[0010] In the technical solution of the present application, when the power supply voltage of the fluorescent color wheel is relatively stable, in the delay protection module, the energy storage effect of the delay protection module can be increased by increasing the number of capacitors connected in parallel or increasing the capacity of the capacitor; when the setting space of the protection circuit in the use equipment is limited, preferably, a large-capacity capacitor can be used, wherein the large-capacity capacitor is usually an electrolytic capacitor. The structure of the electrolytic capacitor is usually composed of two electrodes, a positive electrode and a negative electrode, and an electrolyte. Before the electrolytic capacitor officially works, the electrolyte is subjected to temperature and voltage treatment to generate an electric field and store capacitance. Compared with commonly used capacitors, the capacity can be larger and the energy storage effect is better. Preferably, the delay protection module also includes at least one electrolytic capacitor, which is used to enhance the energy storage effect of the delay protection module and the delayed power-off effect on the fluorescent color wheel. Specifically, when in use, the positive electrode of the electrolytic capacitor is connected to the input end of the fluorescent color wheel, and the negative electrode thereof is connected to the ground end.
[0011] Furthermore, the delay protection module includes an electrolytic capacitor C19 and several capacitors connected in parallel. Preferably, the capacitance of the electrolytic capacitor C19 is 3000-6000μF, and the capacitance of the capacitor is 0.1μF-10μF; the delay protection module drives the fluorescent color wheel to rotate for a duration of not less than 5ms. Preferably, in one embodiment, the delay protection module includes an electrolytic capacitor C19, capacitors C10, C11, C12 and C14 connected in parallel, the capacitance of the electrolytic capacitor C19 is 4700μF, and the capacitors C10, C11, C12 and C14 are all 104 capacitors with a capacitance of 0.1μF.
[0012] Furthermore, the main driving module includes a filtering unit and a voltage stabilization control unit, the filtering unit is connected to the power supply module and the voltage stabilization control unit, and is used to provide an input voltage for the voltage stabilization control unit; the voltage stabilization control unit is further connected to the fluorescent color wheel, and is used to provide a stable power supply voltage for the fluorescent color wheel.
[0013] In the technical solution, since the operation mode of the fluorescent color wheel is that the power supply controls the motor to drive the fluorescent color wheel to operate, its operation state is easily affected by the power supply state. Therefore, by setting a filter unit and a voltage stabilization control unit in the main driving module to connect the power module and the fluorescent color wheel, it is used to provide a stable working voltage for the fluorescent color wheel, so that the fluorescent color wheel can operate smoothly, thereby improving the working performance and use safety of the fluorescent color wheel. Specifically, in the main driving module, the filter unit is connected to the power module and the voltage stabilization control unit, and provides an input voltage to the voltage stabilization control unit; the voltage stabilization control unit is further connected to the fluorescent color wheel, and provides a stable power supply voltage for the fluorescent color wheel.
[0014] Furthermore, the filtering unit includes a plurality of filtering capacitors with different capacities, and the filtering capacitors are arranged in parallel. By connecting a plurality of filtering capacitors with small capacities and different capacities in parallel, the filtering frequency and filtering effect are greatly improved.
[0015] Furthermore, the voltage stabilization control unit includes a power management chip, the power management chip has an external sampling circuit, a built-in reference voltage circuit and an operational amplifier, the voltage input pin of the power management chip is connected to the filter unit, the feedback / output pin of the power management chip is connected to a voltage divider resistor and further connected to the input end and the ground end of the fluorescent color wheel, and is used to collect and adjust the output voltage of the power management chip. In this technical solution, the power management chip has an external sampling circuit, a built-in reference voltage circuit and an operational amplifier, and the output voltage of the voltage stabilization control unit to the fluorescent color wheel is fed back through the sampling circuit, and then input into the operational amplifier for comparison with the reference voltage, and the feedback resistor value of the power management chip is set according to the comparison result, and the output voltage of the power management chip is adjusted to reach the power supply voltage of the fluorescent color wheel, thereby achieving the effect of power supply stabilization. By using the power management chip to power the protection circuit, the effective and reasonable conversion, distribution and detection of the electric energy in the circuit are realized.
[0016] Furthermore, the voltage stabilizing control unit further includes a diode D11, an inductor L5, and a plurality of voltage stabilizing capacitors arranged in parallel, the voltage dividing resistor connects the diode D11 and the inductor L5 and is further connected to the input end of the fluorescent color wheel, and the two ends of the voltage stabilizing capacitor are respectively connected to the input end of the diode D11 and the ground end. In the present technical solution, a voltage stabilizing control unit is arranged between the power module and the fluorescent color wheel, and the current in the circuit is limited by arranging a diode D11 and an inductor L5 between the voltage dividing resistor and the input end of the fluorescent color wheel, thereby providing a more stable input current for the fluorescent color wheel, and filtering and stabilizing the output voltage of the power management chip by connecting a plurality of voltage stabilizing capacitors in parallel between the input end of the diode D11 and the ground end, thereby providing a more stable input voltage for the fluorescent color wheel, further improving the use performance and working state of the fluorescent color wheel.
[0017] In one embodiment, the filter unit includes filter capacitors C15, C16 and C18 arranged in parallel, wherein capacitor C15 is a 104 capacitor having a capacitance of 0.1 μF, C16 is a 103 capacitor having a capacitance of 0.01 μF, and C18 is a 102 capacitor having a capacitance of 0.001 μF;
[0018] The voltage stabilization control unit includes a power management chip, a diode D11, an inductor L5, and voltage stabilization capacitors C41 and C17 connected in parallel, wherein C41 is a 104 capacitor with a capacitance of 0.1 μF, and C17 is a 226 electrolytic capacitor;
[0019] The power management chip uses the TD1468 chip. The voltage input pin VIN of the TD1468 chip is connected to the filter unit, the feedback / output pin FB is connected to the voltage divider resistor R8, the diode D11 and the inductor L5 and is further connected to the input end of the fluorescent color wheel. At the same time, the feedback / output pin FB is also connected to the voltage divider resistor R10 and is further connected to the ground end. The two ends of the voltage stabilizing capacitor C41 and C17 are respectively connected to the ground end and the input end of the diode D11.
[0020] The utility model also provides a stage light with a laser light source module, the stage light includes a lamp head, a support arm supporting the lamp head for rotation, and a chassis rotatably connected to the support arm, the laser light source module is arranged in the lamp head, the laser light source module includes a laser light source for emitting laser, a fluorescent color wheel and a filter module, and also includes a protection circuit of the fluorescent color wheel provided in the present technical solution; the power supply module is installed in the chassis, and supplies power to the laser light source module and the protection circuit.
[0021] Furthermore, the laser light source module also includes a heat dissipation component, which includes at least heat dissipation fins and a heat dissipation fan. The heat dissipation fins are attached to a side of the laser light source module away from the light outlet, and the heat dissipation fan is arranged on the side of the laser light source module to achieve all-round and effective heat dissipation for the laser light source module, thereby ensuring the safe use of the laser light source module and thereby improving the service life of the laser light source module and the stage light as a whole.
[0022] The beneficial effects of the utility model are:
[0023] 1. By adding a protection circuit between the fluorescent color wheel and the power module, the main driving module is used to ensure the stable operation of the fluorescent color wheel when the power module is powered normally, and the delayed protection module is charged and stored at the same time. When the power module is powered off, the fluorescent color wheel is driven to rotate continuously and stably for a certain period of time through the delayed protection module, thereby achieving the delayed power-off effect of the fluorescent color wheel compared to the laser light source, avoiding damage to the fluorescent color wheel caused by direct laser exposure, and improving the safety of the fluorescent color wheel through simple circuit settings. Extend the service life of the fluorescent color wheel.
[0024] 2. By setting the delay protection module as a number of parallel capacitors connected to the main drive module and the fluorescent color wheel, fast and automatic switching between the main drive module and the delay protection module is achieved, ensuring that the operating state of the fluorescent color wheel does not change at the moment the power module is powered off, and the delayed power-off effect of the fluorescent color wheel is achieved quickly, conveniently and effectively; at the same time, the capacitance and number of the capacitors used can be freely adjusted to match the usage scenario, thereby improving the convenience and economy of using the protection circuit. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 The utility model is a schematic diagram of module connection of a protection circuit of a laser light source module.
[0026] Figure 2 The utility model is a connection diagram of a protection circuit of a laser light source module.
[0027] Figure 3 The utility model is a structural schematic diagram of a stage lamp provided with a laser light source module.
[0028] Figure 4 The utility model is a schematic structural diagram of a laser light source and a heat dissipation component in a stage lamp provided with a laser light source module.
[0029] Figure 5 The utility model is a structural schematic diagram of a fluorescent color wheel in a stage lamp provided with a laser light source module.
[0030] Figure 6 The utility model is a structural schematic diagram of a filter module in a stage lamp provided with a laser light source module. DETAILED DESCRIPTION
[0031] The drawings of the present invention are only used for illustrative purposes and cannot be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.
[0032] Example 1
[0033] like Figure 1-Figure 2As shown, the present embodiment provides a protection circuit of a laser light source module, the laser light source module includes a laser light source for emitting excitation light and a fluorescent color wheel for receiving excitation light and producing excited light, the protection circuit is connected to the power module and the fluorescent color wheel to drive the fluorescent color wheel to rotate, and the power module supplies power to the laser light source and the fluorescent color wheel at the same time; the protection circuit includes a main driving module and a delay protection module, the input end of the main driving module is connected to the power module, and the output end thereof is respectively connected to the input end and the ground end of the fluorescent color wheel; the delay protection module is respectively connected to the input end and the ground end of the fluorescent color wheel; by adding a protection circuit between the fluorescent color wheel and the power module, wherein the protection circuit includes the main driving module and the delay protection module, when the power module is normally powered, the main driving module is used to ensure the stable operation of the fluorescent color wheel, and energy is stored for the delay protection module at the same time, when the power module is powered off, the delay protection module is used to drive the fluorescent color wheel to rotate continuously and stably for a certain period of time, thereby achieving the delayed power-off effect of the fluorescent color wheel compared with the laser light source, and avoiding damage to the fluorescent color wheel caused by direct laser irradiation.
[0034] Specifically, the delay protection module includes several capacitors in parallel; when the power module is powered normally, the main drive module drives the fluorescent color wheel to rotate stably and charges the capacitor; when the power module is powered off, the capacitor is discharged, and the delay protection module is switched to drive the fluorescent color wheel to rotate, thereby realizing the delayed power off of the fluorescent color wheel compared to the laser light source. The energy storage and discharge characteristics of the capacitor are fully utilized to realize the rapid and automatic switching between power supply modules, ensuring that the operating state of the fluorescent color wheel does not change at the moment when the power module is powered off, and realizing the delayed power off effect of the fluorescent color wheel quickly, conveniently and effectively. The safety of the fluorescent color wheel is improved and the service life of the fluorescent color wheel is extended through a simple circuit setting.
[0035] Furthermore, the delay protection module also includes at least one electrolytic capacitor, which is used to improve the energy storage effect of the delay protection module and the delayed power-off effect on the fluorescent color wheel. Specifically, when in use, the positive electrode of the electrolytic capacitor is connected to the input end of the fluorescent color wheel, and the negative electrode is connected to the ground end. Preferably, the delay protection module includes an electrolytic capacitor C19 and several capacitors in parallel; the capacitance of the electrolytic capacitor C19 is 3000-6000μF, and the capacitance of the capacitor is 0.1μF-10μF; the delay protection module drives the fluorescent color wheel to rotate for a duration of not less than 5ms.
[0036] Furthermore, the main driving module includes a filtering unit and a voltage stabilizing control unit. The filtering unit is connected to the power supply module and the voltage stabilizing control unit to provide input voltage for the voltage stabilizing control unit. The voltage stabilizing control unit is further connected to the fluorescent color wheel to provide a stable power supply voltage for the fluorescent color wheel.
[0037] Specifically, the filter unit includes a plurality of filter capacitors with different capacities, and the filter capacitors are arranged in parallel. By connecting a plurality of filter capacitors with small capacities and different capacities in parallel, the filter frequency and the filter effect are greatly improved.
[0038] Furthermore, the voltage stabilization control unit includes a power management chip, an external sampling circuit, a built-in reference voltage circuit and an operational amplifier, a voltage input pin of the power management chip is connected to the filter unit, and a feedback / output pin of the power management chip is connected to a voltage divider resistor and further connected to the input end and ground end of the fluorescent color wheel, for collecting and adjusting the output voltage of the power management chip. By using the power management chip to power the protection circuit, effective and reasonable conversion, distribution and detection of electrical energy in the circuit are achieved.
[0039] Furthermore, the voltage stabilizing control unit also includes a diode D11, an inductor L5, and a plurality of voltage stabilizing capacitors arranged in parallel, which provide a more stable input current and input voltage for the fluorescent color wheel; wherein, the voltage dividing resistor is connected to the diode D11 and the inductor L5 and is further connected to the input end of the fluorescent color wheel, and the two ends of the voltage stabilizing capacitor are respectively connected to the input end of the diode D11 and the ground end.
[0040] Preferably, if Figure 2 As shown, the delay protection module includes an electrolytic capacitor C19, capacitors C10, C11, C12 and C14 connected in parallel, wherein the capacitance of the electrolytic capacitor C19 is 4700 μF, and the capacitors C10, C11, C12 and C14 are all 104 capacitors, and their capacitance is 0.1 μF;
[0041] The filter unit includes filter capacitors C15, C16 and C18 arranged in parallel, wherein capacitor C15 is a 104 capacitor with a capacitance of 0.1 μF, C16 is a 103 capacitor with a capacitance of 0.01 μF, and C18 is a 102 capacitor with a capacitance of 0.001 μF;
[0042] The voltage stabilizing control unit includes a power management chip, a diode D11, an inductor L5, and voltage stabilizing capacitors C41 and C17 arranged in parallel, wherein C41 is a 104 capacitor with a capacitance of 0.1 μF, and C17 is a 226 electrolytic capacitor; the power management chip uses the TD1468 chip, the voltage input pin VIN of the TD1468 chip is connected to the filtering unit, the feedback / output pin FB is connected to the voltage dividing resistor R8, the diode D11, and the inductor L5, and is further connected to the input end of the fluorescent color wheel, and at the same time, the feedback / output pin FB is also connected to the voltage dividing resistor R10 and is further connected to the ground end, and the two ends of the voltage stabilizing capacitors C41 and C17 are respectively connected to the ground end and the input end of the diode D11.
[0043] Example 2
[0044] like Figure 1-Figure 6 As shown, the utility model also provides a stage light provided with a laser light source module, the stage light includes a lamp head 1, a support arm 2 supporting the lamp head 1 to rotate, and a chassis 3 rotatably connected to the support arm 2, a laser light source module 4 is arranged in the lamp head, the laser light source module 4 includes a laser light source 41 for emitting laser, a fluorescent color wheel 42 and a filter module 43, and also includes a protection circuit as provided in this embodiment 1; a power supply module is installed in the chassis 3, and supplies power to the laser light source module 4 and the protection circuit.
[0045] Furthermore, a heat dissipation component is also included, which includes at least heat dissipation fins 51 and a heat dissipation fan 52 . The heat dissipation fins 51 are attached to a side of the laser light source module 4 away from the light outlet, and the heat dissipation fan 52 is arranged on the side of the laser light source module 4 .
[0046] Obviously, the above embodiments of the utility model are only examples for clearly explaining the technical solution of the utility model, and are not intended to limit the specific implementation methods of the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the utility model shall be included in the protection scope of the claims of the utility model.
Claims
1. A protection circuit for a laser light source module, the laser light source module comprising a laser light source for emitting excitation light and a fluorescent color wheel for receiving the excitation light and producing stimulated light, characterized in that: The protection circuit is connected to the power module and the fluorescent color wheel to drive the fluorescent color wheel to rotate, and the power module supplies power to the laser light source and the fluorescent color wheel at the same time; the protection circuit includes a main driving module and a delay protection module, the input end of the main driving module is connected to the power module, and the output end thereof is respectively connected to the input end and the ground end of the fluorescent color wheel; the delay protection module is respectively connected to the input end and the ground end of the fluorescent color wheel; The delay protection module includes a plurality of capacitors connected in parallel; when the power supply module supplies power normally, the main driving module drives the fluorescent color wheel to rotate stably and charges the capacitor; when the power supply module is powered off, the capacitor is discharged, and the delay protection module is switched to drive the fluorescent color wheel to rotate, thereby achieving delayed power-off of the fluorescent color wheel compared to the laser light source.
2. The protection circuit according to claim 1, characterized in that: The delay protection module further comprises at least one electrolytic capacitor, the positive electrode of the electrolytic capacitor is connected to the input end of the fluorescent color wheel, and the negative electrode of the electrolytic capacitor is connected to the ground end.
3. The protection circuit according to claim 2, characterized in that: The time delay protection module includes an electrolytic capacitor C19 and a plurality of capacitors connected in parallel.
4. The protection circuit according to any one of claims 1 to 3, characterized in that: The main driving module includes a filtering unit and a voltage stabilization control unit. The filtering unit is connected to the power supply module and the voltage stabilization control unit to provide an input voltage for the voltage stabilization control unit. The voltage stabilization control unit is further connected to the fluorescent color wheel to provide a stable power supply voltage for the fluorescent color wheel.
5. The protection circuit according to claim 4, characterized in that: The filtering unit includes a plurality of filtering capacitors with different capacities, and the filtering capacitors are arranged in parallel.
6. The protection circuit according to claim 5, characterized in that: The voltage stabilization control unit includes a power management chip, which has an external sampling circuit, a built-in reference voltage circuit and an operational amplifier. The voltage input pin of the power management chip is connected to the filtering unit, and the feedback / output pin of the power management chip is connected to a voltage divider resistor and further connected to the input end and ground end of the fluorescent color wheel for collecting and adjusting the output voltage of the power management chip.
7. The protection circuit according to claim 6, characterized in that: The voltage stabilizing control unit also includes a diode D11, an inductor L5, and a plurality of voltage stabilizing capacitors arranged in parallel. The voltage dividing resistor is connected to the diode D11 and the inductor L5 and is further connected to the input end of the fluorescent color wheel. The two ends of the voltage stabilizing capacitor are respectively connected to the input end of the diode D11 and the ground end.
8. The protection circuit according to claim 7, characterized in that: The power management chip is a TD1468 chip, the voltage input pin VIN of the TD1468 chip is connected to the filtering unit, the feedback / output pin FB is connected to the voltage divider resistor R8, the diode D11 and the inductor L5 and is further connected to the input end of the fluorescent color wheel, and at the same time, the feedback / output pin FB is also connected to the voltage divider resistor R10 and is further connected to the ground end.
9. A stage lamp with a laser light source module, comprising a lamp head, a support arm supporting the rotation of the lamp head, and a chassis rotatably connected to the support arm, wherein the laser light source module is arranged in the lamp head, and the laser light source module comprises a laser light source for emitting laser light, a fluorescent color wheel, and a filter module, characterized in that: It also includes the protection circuit as described in any one of claims 1-8; wherein the power supply module is installed in the chassis and supplies power to the laser light source module and the protection circuit.
10. The stage light according to claim 9, characterized in that: The corresponding laser light source module also includes a heat dissipation component, which includes at least heat dissipation fins and a heat dissipation fan. The heat dissipation fins are attached to a side of the laser light source module away from the light outlet, and the heat dissipation fan is arranged on the side of the laser light source module.