CN220087523U - Light over-temperature protection control circuit and underwater lamp - Google Patents
Light over-temperature protection control circuit and underwater lamp Download PDFInfo
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- CN220087523U CN220087523U CN202223337515.XU CN202223337515U CN220087523U CN 220087523 U CN220087523 U CN 220087523U CN 202223337515 U CN202223337515 U CN 202223337515U CN 220087523 U CN220087523 U CN 220087523U
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- 238000012544 monitoring process Methods 0.000 claims abstract description 47
- 239000003990 capacitor Substances 0.000 claims description 39
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000013021 overheating Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 3
- 241001465382 Physalis alkekengi Species 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model discloses a lamplight over-temperature protection control circuit and an underwater lamp, comprising a power supply output circuit, a temperature monitoring circuit, an over-temperature switch circuit, a brightness control circuit and a constant current driving circuit, wherein the power supply output circuit is connected with the temperature monitoring circuit; the input end of the power supply output circuit is connected with an external power supply, and the output end of the power supply output circuit is respectively connected with the temperature monitoring circuit, the over-temperature switch circuit, the brightness control circuit, the constant current driving circuit and the light source circuit; the constant current driving circuit is connected with the light source circuit and is used for outputting a constant current signal to the light source circuit; the temperature monitoring circuit is used for monitoring the temperature condition of the external environment and outputting a monitoring voltage signal; the over-temperature switch circuit is respectively connected with the temperature monitoring circuit and the brightness control circuit; the output state of the constant current driving circuit is regulated by the over-temperature switch circuit and the brightness control circuit so as to regulate the brightness state of the light source circuit. The utility model can realize over-temperature protection, ensure the service reliability and service life of the lamp and meet the use requirements of users.
Description
Technical Field
The utility model relates to the technical field of illumination, in particular to a lamplight over-temperature protection control circuit and an underwater lamp.
Background
Because of the special illumination requirement of the underwater lamp, the underwater lamp is an essential important component for underwater detection, and in order to ensure the working efficiency of underwater operation, the reliable operation of the lamp is required to be ensured.
The traditional underwater lamp product has only simple power switch control, and can not intelligently change light or adjust the output power of the lamp according to the temperature environment. When the ambient temperature is higher, the lamp continuously keeps high-power illumination output and can cause the temperature rise to be accelerated, so that the overall performance of the lamp is reduced, the service life of the lamp is shortened, the light efficiency of the lamp is reduced, even the lamp is automatically extinguished due to overheat damage, the use reliability of the lamp is reduced, and the use requirement of a user cannot be met.
Along with development of the singlechip technology, at present, part of lamps and lanterns detect ambient temperature through temperature detection device, and when detecting that the temperature is higher, control circuit control lamps and lanterns go out to reach the cooling effect. However, the above manner affects the underwater operation efficiency, and cannot meet the use requirement of the user.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a lamplight over-temperature protection control circuit and an underwater lamp, which can realize over-temperature protection, ensure the use reliability and the service life of the lamp and meet the use requirements of users.
In order to solve the technical problems, the utility model provides a lamplight over-temperature protection control circuit which comprises a power supply output circuit, a temperature monitoring circuit, an over-temperature switch circuit, a brightness control circuit and a constant current driving circuit; the input end of the power supply output circuit is connected with an external power supply, and the output end of the power supply output circuit is respectively connected with the temperature monitoring circuit, the over-temperature switch circuit, the brightness control circuit, the constant current driving circuit and the light source circuit; the constant current driving circuit is connected with the light source circuit and is used for outputting a constant current signal to the light source circuit; the temperature monitoring circuit is used for monitoring the temperature condition of the external environment and outputting a monitoring voltage signal; the over-temperature switch circuit is respectively connected with the temperature monitoring circuit and the brightness control circuit and is used for outputting a switch signal to the brightness control circuit according to the monitoring voltage signal; the brightness control circuit is connected with the constant current driving circuit and is used for adjusting the output state of the constant current driving circuit according to the switching signal so as to adjust the brightness state of the light source circuit.
As an improvement of the scheme, the temperature monitoring circuit comprises a first resistor and a thermistor, one end of the first resistor is connected with the positive electrode output end of the power supply output circuit, and the other end of the first resistor is grounded through the thermistor; the voltage division point between the first resistor and the thermistor is connected with the input end of the over-temperature switch circuit.
As an improvement of the scheme, the over-temperature switching circuit comprises a first switching tube, wherein the trigger end of the first switching tube is connected with a voltage division point between the first resistor and the thermistor, the first end of the first switching tube is connected with the input end of the brightness control circuit, and the second end of the first switching tube is grounded.
As an improvement of the above scheme, the brightness control circuit comprises a second switching tube, a third switching tube, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a second capacitor; the trigger end of the second switching tube is connected with the first end of the first switching tube and the positive electrode output end of the power supply output circuit through a second resistor, the first end of the second switching tube is connected with the positive electrode output end of the power supply output circuit through a fourth resistor and a third resistor in sequence and the trigger end of the third switching tube through a fifth resistor, and the second end of the second switching tube is grounded; the triggering end of the third switching tube is connected with the second end of the third switching tube through a second capacitor, and the first end of the third switching tube is connected with the constant current driving circuit; the second end of the third switching tube is connected with a connection point between the third resistor and the fourth resistor.
As an improvement of the above scheme, the constant current driving circuit includes a constant current driving chip, a reference module, a flywheel diode, an inductor, a second electrolytic capacitor, a third capacitor and a sixth resistor; the output end of the constant current driving chip is respectively connected with the positive electrode of the freewheel diode and one end of the inductor, the negative electrode of the freewheel diode is connected with the positive electrode output end of the power supply output circuit and is connected with the other end of the inductor through a second electrolytic capacitor, and the second electrolytic capacitor is connected with two ends of the light source circuit in parallel; the reference signal end of the constant current driving chip is grounded through the reference module, the output mode control end of the constant current driving chip is connected with the output end of the brightness control circuit, the power end of the constant current driving chip is connected with the cathode of the freewheel diode through the sixth resistor, and the grounding end of the constant current driving chip is grounded and connected with the power end of the constant current driving chip through the third capacitor.
As an improvement of the above-mentioned scheme, the power supply output circuit includes a diode, a first electrolytic capacitor and a first capacitor; the anode of the diode is connected with the anode end of an external power supply, and the cathode of the diode is respectively connected with the anode of the second electrolytic capacitor, the temperature monitoring circuit, the brightness control circuit, the constant current driving circuit and the light source circuit; the negative electrode of the second electrolytic capacitor is connected with the negative electrode end of the external power supply and grounded, and the first capacitor is connected with the second electrolytic capacitor in parallel.
As an improvement of the scheme, the thermistor is an NTC negative temperature coefficient thermistor, and the first switch tube is an NPN triode.
As an improvement of the scheme, the thermistor is a PTC positive temperature coefficient thermistor, and the first switching tube is a PNP triode.
As an improvement of the scheme, the second switching tube is an NPN triode, and the third switching tube is a PMOS tube.
Correspondingly, the utility model also provides an underwater lamp, which comprises a lamp body and the light over-temperature protection control circuit, wherein the light over-temperature protection control circuit is packaged in the lamp body.
The implementation of the utility model has the beneficial effects that:
according to the light over-temperature protection control circuit and the underwater lamp, the temperature condition of the external environment is monitored through the temperature monitoring circuit, the monitoring voltage signal is output to the over-temperature switching circuit, the switching signal is output to the brightness control circuit through the over-temperature switching circuit according to the monitoring voltage signal, the output state of the constant current driving circuit is adjusted through the brightness control circuit according to the switching signal, so that the brightness state of the light source circuit is adjusted, the output power and the brightness state of the lamp are intelligently adjusted under different environment temperatures, the whole lamp temperature is enabled to work in a safe range, the lamp is prevented from being overheated, the use reliability and the service life of the lamp are guaranteed, and the use requirement of a user is met.
Drawings
FIG. 1 is a schematic diagram of the structure of the light over-temperature protection control circuit of the utility model;
FIG. 2 is a circuit diagram of the light over-temperature protection control circuit of the utility model;
fig. 3 is a schematic structural view of the underwater light fixture of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.
As shown in fig. 1, fig. 1 shows a schematic structural diagram of a lamplight overtemperature protection control circuit of the utility model, which comprises a power supply output circuit 1, a temperature monitoring circuit 2, an overtemperature switch circuit 3, a brightness control circuit 4, a constant current driving circuit 5 and a light source circuit 6; the input end of the power supply output circuit 1 is connected with an external power supply, and the output end of the power supply output circuit 1 is respectively connected with the temperature monitoring circuit 2, the over-temperature switch circuit 3, the brightness control circuit 4, the constant current driving circuit 5 and the light source circuit 6; the constant current driving circuit 5 is connected with the light source circuit 6 and is used for outputting a constant current signal to the light source circuit 6; the temperature monitoring circuit 2 is used for monitoring the temperature condition of the external environment and outputting a monitoring voltage signal; the over-temperature switch circuit 3 is respectively connected with the temperature monitoring circuit 2 and the brightness control circuit 4 and is used for outputting a switch signal to the brightness control circuit 4 according to the monitoring voltage signal; the brightness control circuit 4 is connected to the constant current drive circuit 5, and is configured to adjust an output state of the constant current drive circuit 5 according to the switching signal, so as to adjust a brightness state of the light source circuit 6.
According to the utility model, the temperature monitoring circuit 2 monitors the temperature condition of the external environment and outputs a monitoring voltage signal to the over-temperature switch circuit 3, the over-temperature switch circuit 3 outputs a switch signal to the brightness control circuit 4 according to the monitoring voltage signal, the brightness control circuit 4 adjusts the output power state of the constant current drive circuit 5 according to the switch signal so as to adjust the brightness state of the light source circuit 6, and the intelligent adjustment of the output power and the brightness state of the lamp under different environment temperatures is realized, so that the whole lamp temperature works in a safe range, the lamp overheating is avoided, the service reliability and the service life of the lamp are ensured, and the use requirement of a user is met.
The utility model is described in further detail below with reference to specific circuit diagrams:
as shown in fig. 2, fig. 2 shows a specific circuit diagram of the light over-temperature protection control circuit of the present utility model, and the power supply output circuit 1, the temperature monitoring circuit 2, the over-temperature switch circuit 3, the brightness control circuit 4, the constant current driving circuit 5 and the light source circuit 6 are described below:
1. power supply output circuit 1
The power supply output circuit 1 comprises a diode D1, a first electrolytic capacitor EC1 and a first capacitor C1; the anode of the diode D1 is connected with the anode end of an external power supply, and the cathode of the diode D1 is respectively connected with the anode of the second electrolytic capacitor EC2, the temperature monitoring circuit 2, the brightness control circuit 4, the constant current driving circuit 5 and the light source circuit 6; the negative electrode of the second electrolytic capacitor EC2 is connected to the negative electrode terminal of the external power supply and grounded, and the first capacitor C1 is connected in parallel with the second electrolytic capacitor EC 2.
The power supply output circuit 1 supplies power to the temperature monitoring circuit 2, the luminance control circuit 4, the constant current drive circuit 5, and the light source circuit 6, and the temperature monitoring circuit 2, the luminance control circuit 4, the constant current drive circuit 5, and the light source circuit 6 are electrically operated.
2. Temperature monitoring circuit 2
The temperature monitoring circuit comprises a first resistor R1 and a thermistor RT, one end of the first resistor R1 is connected with the positive output end of the power supply output circuit 1, and the other end of the first resistor R1 is grounded through the thermistor RT; the voltage division point between the first resistor R1 and the thermistor RT is connected with the input end of the over-temperature switch circuit 3. Wherein, the thermistor RT is an NTC negative temperature coefficient thermistor.
When the ambient temperature increases, the resistance of the thermistor RT decreases, so that the level of the voltage division point between the first resistor R1 and the thermistor RT decreases; when the ambient temperature is low, the resistance of the thermistor RT increases, and the level of the voltage division point between the first resistor R1 and the thermistor RT increases. Therefore, the temperature monitoring circuit 2 outputs a high-level or low-level monitoring voltage signal to the over-temperature switching circuit 3.
Of course, the thermistor RT may also be a PTC positive temperature coefficient thermistor, and based on its temperature characteristics, the temperature monitoring circuit 2 outputs a corresponding signal to the over-temperature switch circuit 3 that is correspondingly disposed, which will not be described herein.
3. Over-temperature switch circuit 3
The over-temperature switching circuit 3 comprises a first switching tube Q1, wherein the trigger end of the first switching tube Q1 is connected with a voltage division point between the first resistor R1 and the thermistor RT, the first end of the first switching tube Q1 is connected with the input end of the brightness control circuit 4, and the second end of the first switching tube Q1 is grounded.
When the ambient temperature is high, the thermistor RT pulls down the voltage at the trigger end of the first switching tube Q1, and the first switching tube Q1 is turned off; when the ambient temperature is low, the first switching tube Q1 is turned on. The output power state of the constant current driving circuit 5 is regulated by the on-off control brightness control circuit 4 of the first switching tube Q1 so as to regulate the brightness state of the light source circuit 6, and the intelligent regulation of the output power and the brightness state of the lamp under high and low environment temperatures is realized, so that the whole lamp temperature works in a safe range, the lamp is prevented from overheating, the use reliability and the service life of the lamp are ensured, and the use requirement of a user is met.
Preferably, the first switching transistor Q1 is an NPN triode.
Furthermore, in other embodiments, the thermistor RT may be a PTC thermistor, and accordingly, the first switching transistor Q1 is a PNP transistor. When the ambient temperature is high, the resistance value of the thermistor RT is increased, so that the trigger end of the first switching tube Q1 is at a high level, and the first switching tube Q1 is disconnected; when the ambient temperature is low, the resistance of the thermistor RT becomes small, the voltage of the trigger end of the first switching tube Q1 is pulled down, and the first switching tube Q1 is turned on. The output power state of the constant current driving circuit 5 is regulated by the on-off control brightness control circuit 4 of the first switching tube Q1 in the mode so as to regulate the brightness state of the light source circuit 6, and the intelligent regulation of the output power and the brightness state of the lamp under high and low environment temperatures is realized, so that the whole lamp temperature works in a safe range, the lamp is prevented from overheating, the use reliability and the service life of the lamp are ensured, and the use requirement of a user is met.
4. Luminance control circuit 4
The brightness control circuit 4 comprises a second switching tube Q2, a third switching tube Q3, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a second capacitor C2; the trigger end of the second switching tube Q2 is connected with the first end of the first switching tube Q1 and is connected with the positive electrode output end of the power supply output circuit 1 through a second resistor R2, the first end of the second switching tube Q2 is connected with the positive electrode output end of the power supply output circuit 1 through a fourth resistor R4 and a third resistor R3 in sequence and is connected with the trigger end of the third switching tube Q3 through a fifth resistor R5, and the second end of the second switching tube Q2 is grounded; the triggering end of the third switching tube Q3 is connected with the second end of the third switching tube Q3 through a second capacitor C2, and the first end of the third switching tube Q3 is connected with the constant current driving circuit 5; the second end of the third switching tube Q3 is connected to a connection point between the third resistor R3 and the fourth resistor R4.
When the ambient temperature is high, the first switching tube Q1 is turned off, the level of the trigger end of the second switching tube Q2 is high, the second switching tube Q2 is turned on, the voltage of the trigger end of the third switching tube Q3 is pulled down, the third switching tube Q3 is turned on, and a control signal of high level is output to the constant current driving circuit 5; conversely, when the ambient temperature is low, the first switching tube Q1 is turned on and pulls the trigger end voltage of the second switching tube Q2 low, so that the second switching tube Q2 and the third switching tube Q3 are disconnected, that is, the loop between the third switching tube Q3 and the constant current driving circuit 5 is disconnected.
Preferably, the second switching tube Q2 is an NPN triode, and the third switching tube Q3 is a PMOS tube.
5. Constant current drive circuit 5
The constant current driving circuit 5 comprises a constant current driving chip U1, a reference module, a freewheeling diode D2, an inductor L1L1, a second electrolytic capacitor EC2, a third capacitor C3 and a sixth resistor R6; the output end of the constant current driving chip U1 is respectively connected with the positive electrode of the freewheel diode D2 and one end of the inductor L1, the negative electrode of the freewheel diode D2 is connected with the positive output end of the power supply output circuit 1 and is connected with the other end of the inductor L1 through a second electrolytic capacitor EC2, and the second electrolytic capacitor EC2 is connected with two ends of the light source circuit 6 in parallel; the reference signal end of the constant current driving chip U1 is grounded through a reference module, the output mode control end of the constant current driving chip U1 is connected with the output end of the brightness control circuit 4, the power end of the constant current driving chip U1 is connected with the cathode of the freewheel diode D2 through a sixth resistor R6, and the grounding end of the constant current driving chip U1 is grounded and connected with the power end of the constant current driving chip U1 through a third capacitor C3.
When the ambient temperature is high, the third switching tube Q3 is turned on, the output mode control end of the constant current driving chip U1 receives a high-level control signal, the constant current driving chip U1 adjusts the output mode to be a low-power output mode, and at this time, the output end of the constant current driving chip U1 outputs 50% of constant current to the light source circuit 6, so that the light source power supply is in a low-brightness mode; on the contrary, when the ambient temperature is low, the third switching tube Q3 is turned off, the output mode control end of the constant current driving chip U1 is in a suspended state, the constant current driving chip U1 adjusts the output mode to be a high-power output mode, and at this time, the output end of the constant current driving chip U1 outputs 100% of constant current to the light source circuit 6, so that the light source power supply is in a high-brightness mode. The brightness state of the light source circuit 6 can be adjusted in the mode, the output power and the brightness state of the lamp can be intelligently adjusted at high and low ambient temperatures, the whole lamp temperature can work in a safe range, the lamp is prevented from overheating, the service reliability and the service life of the lamp are guaranteed, and the use requirements of users are met.
The model of the constant voltage driving chip is preferably LM2556, but not limited thereto, and can be selected according to practical situations.
Preferably, the reference module comprises a reference resistor RES, the reference signal end of the constant current driving chip U1 can set and output a constant current value through the external reference resistor RES, and the flexibility is high.
6. Light source circuit 6
The light source circuit 6 includes at least one light module, which is a laser light module or an LED light module, but not limited thereto, and may be selected according to practical situations.
As shown in fig. 3, fig. 3 shows a specific structure of the underwater lamp of the present utility model, which includes a lamp body 7 and the above-mentioned light over-temperature protection control circuit 8, where the above-mentioned light over-temperature protection control circuit 8 is encapsulated in the lamp body 7. Wherein, the lamp body 7 is connected with a watertight joint to realize electric connection.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.
Claims (10)
1. The light over-temperature protection control circuit is characterized by comprising a power supply output circuit, a temperature monitoring circuit, an over-temperature switch circuit, a brightness control circuit and a constant current driving circuit;
the input end of the power supply output circuit is connected with an external power supply, and the output end of the power supply output circuit is respectively connected with the temperature monitoring circuit, the over-temperature switch circuit, the brightness control circuit, the constant current driving circuit and the light source circuit;
the constant current driving circuit is connected with the light source circuit and is used for outputting a constant current signal to the light source circuit;
the temperature monitoring circuit is used for monitoring the temperature condition of the external environment and outputting a monitoring voltage signal;
the over-temperature switch circuit is respectively connected with the temperature monitoring circuit and the brightness control circuit and is used for outputting a switch signal to the brightness control circuit according to the monitoring voltage signal;
the brightness control circuit is connected with the constant current driving circuit and is used for adjusting the output state of the constant current driving circuit according to the switching signal so as to adjust the brightness state of the light source circuit.
2. The lamplight overtemperature protection control circuit according to claim 1, wherein the temperature monitoring circuit comprises a first resistor and a thermistor, one end of the first resistor is connected with the positive output end of the power supply output circuit, and the other end of the first resistor is grounded through the thermistor;
and a voltage division point between the first resistor and the thermistor is connected with the input end of the over-temperature switch circuit.
3. The lamp light over-temperature protection control circuit according to claim 2, wherein the over-temperature switching circuit comprises a first switching tube, a trigger end of the first switching tube is connected with a voltage division point between the first resistor and the thermistor, a first end of the first switching tube is connected with an input end of the brightness control circuit, and a second end of the first switching tube is grounded.
4. The light over-temperature protection control circuit according to claim 3, wherein the brightness control circuit comprises a second switching tube, a third switching tube, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a second capacitor;
the trigger end of the second switching tube is connected with the first end of the first switching tube and the positive output end of the power supply output circuit through the second resistor, the first end of the second switching tube is connected with the positive output end of the power supply output circuit through the fourth resistor and the third resistor in sequence and the trigger end of the third switching tube through the fifth resistor, and the second end of the second switching tube is grounded;
the triggering end of the third switching tube is connected with the second end of the third switching tube through the second capacitor, and the first end of the third switching tube is connected with the constant current driving circuit;
and the second end of the third switch tube is connected with a connection point between the third resistor and the fourth resistor.
5. The light over-temperature protection control circuit according to claim 1 or 4, wherein the constant current driving circuit comprises a constant current driving chip, a reference module, a freewheeling diode, an inductor, a second electrolytic capacitor, a third capacitor and a sixth resistor;
the output end of the constant current driving chip is respectively connected with the positive electrode of the follow current diode and one end of the inductor, the negative electrode of the follow current diode is connected with the positive electrode output end of the power supply output circuit and is connected with the other end of the inductor through the second electrolytic capacitor, and the second electrolytic capacitor is connected with two ends of the light source circuit in parallel;
the reference signal end of the constant current driving chip is grounded through the reference module, the output mode control end of the constant current driving chip is connected with the output end of the brightness control circuit, the power end of the constant current driving chip is connected with the cathode of the freewheel diode through the sixth resistor, and the grounding end of the constant current driving chip is grounded and connected with the power end of the constant current driving chip through the third capacitor.
6. The light over-temperature protection control circuit of claim 5, wherein the power supply output circuit comprises a diode, a first electrolytic capacitor and a first capacitor;
the anode of the diode is connected with the anode end of an external power supply, and the cathode of the diode is respectively connected with the anode of the second electrolytic capacitor, the temperature monitoring circuit, the brightness control circuit, the constant current driving circuit and the light source circuit;
the negative electrode of the second electrolytic capacitor is connected with the negative electrode end of the external power supply and grounded, and the first capacitor is connected with the second electrolytic capacitor in parallel.
7. A light over-temperature protection control circuit as claimed in claim 3, wherein the thermistor is an NTC negative temperature coefficient thermistor, and the first switching tube is an NPN triode.
8. The light over-temperature protection control circuit of claim 3, wherein the thermistor is a PTC thermistor and the first switching tube is a PNP transistor.
9. The lamp over-temperature protection control circuit according to claim 4, wherein the second switching tube is an NPN triode and the third switching tube is a PMOS tube.
10. An underwater lamp, comprising a lamp body and the light over-temperature protection control circuit according to any one of claims 1-9, wherein the light over-temperature protection control circuit is packaged in the lamp body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223337515.XU CN220087523U (en) | 2022-12-13 | 2022-12-13 | Light over-temperature protection control circuit and underwater lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223337515.XU CN220087523U (en) | 2022-12-13 | 2022-12-13 | Light over-temperature protection control circuit and underwater lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220087523U true CN220087523U (en) | 2023-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223337515.XU Active CN220087523U (en) | 2022-12-13 | 2022-12-13 | Light over-temperature protection control circuit and underwater lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220087523U (en) |
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2022
- 2022-12-13 CN CN202223337515.XU patent/CN220087523U/en active Active
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