一种可兼容传统电子镇流器的LED照明系统
By designing an LED lighting system compatible with traditional electronic ballasts, and utilizing circuit combinations such as transient voltage suppression circuits and adaptive filter circuits, the problems of high energy consumption, short lifespan, and complex retrofitting of existing marine lighting systems have been solved, achieving low-cost retrofitting and stable and efficient LED lighting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO SHENGHE LIGHTING CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing marine lighting systems use fluorescent lamps and electronic ballasts, which have high energy consumption and short lifespans. Traditional LED retrofits require the removal of ballasts, resulting in high costs and complex construction. Furthermore, the output characteristics of electronic ballasts are incompatible with conventional LED drivers.
An LED lighting system comprising a transient voltage suppression circuit, an adaptive filter circuit, a rectifier circuit, an input detection and protection circuit, and an adaptive constant current circuit was designed. The transient voltage suppressor works in conjunction with the gas discharge tube to filter out high-frequency noise, the rectifier circuit converts high-frequency AC power into pulsating DC power, and the adaptive constant current circuit adjusts the output current to ensure stable operation of the system under different voltage conditions.
This achieves reduced construction costs, improved compatibility and stability of LED lighting systems, extended lifespan, adaptability to a wide voltage range, and reduced energy consumption without removing the original ballast.
Smart Images
Figure CN224521227U_ABST
Abstract
Claims
1. A LED lighting system compatible with traditional electronic ballast, comprising a transient voltage suppression circuit, an adaptive filter circuit, a rectifier circuit, an input detection protection circuit, an auxiliary power supply circuit and an adaptive constant current circuit, the auxiliary power supply circuit is used to provide stable low voltage power supply for constant current drive chip and control circuit, characterized in that, The transient voltage suppression circuit is used to suppress transient overvoltages at the input terminal. The adaptive filter circuit is used to smooth the pulsating DC power after rectification and match different input voltages through an adaptive mechanism. The rectifier circuit is used to convert the high-frequency AC power output by the traditional electronic ballast into pulsating DC power, adapt to a wide range of input voltages, and ensure stable operation under different voltage conditions. The input detection and protection circuit is used to monitor the bus capacitor voltage status in real time. The adaptive constant current circuit is used to automatically adjust the output current according to load and input changes.
2. The LED lighting system compatible with a conventional electronic ballast according to claim 1, wherein, The transient voltage suppression circuit includes a transient voltage suppressor TVS1, capacitors CY2, CY3, CY4, CY5, CY6, CY7, CY8, and CY9, resistors ZNR3 and ZNR4, and a gas discharge tube GDT1. The transient voltage suppressor TVS1 is connected to capacitor CY2. Capacitors CY2, CY3, CY4, CY5, CY6, CY7, CY8, and CY9 are indirectly connected through the gas discharge tube GDT1. The gas discharge tube GDT1 conducts during overvoltage, providing a path for large current discharge.
3. The LED lighting system compatible with a conventional electronic ballast according to claim 1, wherein, The adaptive filter circuit includes capacitors CX1, CX2, CX3, CX4, CX5, and CX6; resistors R1, R7, R11, R13, R14, R15, R19, and R24; transformers LF1 and LF2. Capacitors CX1 and CX4 are connected to resistors R14 and R19. Resistor R14 is connected to resistor R1. Resistor R19 is connected to resistor R24. Resistor R1 and R24 are both connected to transformer LF1. Transformer LF1 is connected to capacitors CX3 and CX6, and resistors R7 and R19. Capacitors CX3 and CX6 are connected to resistors R11 and R13. Resistor R11 is connected to resistor R7. Resistor R13 is connected to resistor R15. Resistor R7 and R15 are both connected to transformer LF2. Transformer LF2 is also connected to capacitors CX2 and CX5.
4. The LED lighting system compatible with a conventional electronic ballast according to claim 1, wherein, The rectifier circuit includes resistors RT1, RT2, R9, R10, R21, R22, R25, R26, R26A, R29, R33, and ZNR2; diodes D4, D5, and D8; capacitors C4, C7, C11, and C14; and a rectifier bridge BD1. Resistors RT1, RT2, R9, and R10 are all connected to the rectifier bridge BD1. The rectifier bridge BD1 is also connected to resistors ZNR2, C4, and C7. The resistors R9 and R10 are connected to diode D8 and resistor R25 via switch K1. Resistor R9 is also connected to diodes D4 and D5. One end of diode D4 is connected to resistor R21. One end of resistor R21 is connected to resistor R22. One end of resistor R22 is connected to resistor R26A. One end of resistor R26A is connected to resistor R26. Resistor R26 is also connected to resistors R29 and R33 and capacitor C14. Diode D5 is also connected to capacitor C11.
5. The LED lighting system compatible with a conventional electronic ballast according to claim 1, wherein, The input detection and protection circuit includes comparators U2A and U2B, resistors R34, R35, R36, R37, R38, R40, R41, R43, R45, R46, R55, R58, R59, R60, R64, R65, R67, and R69, capacitors C15, C18, C19, C25, C26, C27, C28, and C29, diodes D9, D12, and U4, transistors Q2 and Q3, and transistor Q4. Resistors R34, R36, and C15 are all connected to comparator U2A. Comparator U2A is also connected to diode D9 and resistor R37. Resistor R35 is connected to... Resistor R36 and resistor R41 are connected together. Resistor R41 is connected to resistors R45 and R46 and capacitor C19. Resistor R43, resistor R45, and capacitor C18 are all connected to comparator U2B. One end of comparator U2B is connected to diode D12. Diode D12 is connected to resistor R38. Capacitors C27 and C28 are both connected to transistor Q3. The base of transistor Q3 is connected to resistors R59 and R64. Resistor R59 is connected to resistor R65. Resistor R64 is connected to transistor Q4. The gate of transistor Q4 is connected to capacitor C29 and resistor R69. Resistor R58, capacitor C25, diode U4, resistor R60, and capacitor C26 are all connected to transistor Q2. Resistor R60 is also connected to resistor R67.
6. The LED lighting system compatible with a conventional electronic ballast according to claim 1, wherein, The adaptive constant current circuit includes chip U3, resistors R39, R42, R44, R47, R48, R49, R50, R51, R52, R53, R54, R56, R57, R60, R61, R62, R63, R66, R68, R70, and R111, and capacitors EC2, EC3, C16, C17, C20, C21, and C22.
3. Capacitors C24, C26, CY10, and CY11; diodes D10, D11, D13, and D14; transformers T1 and LF3; and transistor Q1; capacitor C21; resistors R47 and R50 are all connected to the LN pin of chip U3. Resistors R111, R6, C260, and C23 are all connected to the DIM pin of chip U3. Capacitor C24 and resistor R57 are both connected to the CS pin of chip U3. Resistor R57 is also connected to resistor... Resistors R61, R62, and R63 are connected together. Capacitor C22, resistors R53 and R54 are all connected to the ZCD pin of chip U3. Resistor R54 is also connected to diode D14 and transformer T1. Diode D14 is connected in series with resistors R56, R66, R68, and R70. Diode D13 and resistor R51 are both connected to the GD pin of chip U3. Resistor R51 is also connected to resistor R52. Diode D13 is also connected to one end of resistor R49. The other end of 49 is connected to transistor Q1, which is also connected to capacitor C16, capacitor C20, diode D11, and diode D10. Diode D10 is also connected to one end of resistor R39, and the other end of resistor R39 is connected to resistor R42. Capacitor C17 and resistor R48 are both connected to the VCC pin of chip U3. Transformer T1 is also connected to capacitor EC2, capacitor EC3, resistor R44, and transformer LF3. Transformer LF3 is also connected to capacitor CY10 and capacitor CY11.