Patents by Inventor RONGTU LIU

RONGTU LIU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11723135
    Abstract: An intelligent lighting device controller includes a detecting module, a main power source module and an intelligent control module. The detecting module has a detecting circuit. The main power source module has a plurality of first electrode connectors and a common second electrode connector. The first electrode connectors are connected to the detecting circuit and connected to the first electrodes of a plurality of lighting devices respectively via the detecting circuit. The common second electrode connector outputs an electricity signal to drive the lighting devices. The intelligent control module is connected to the detecting module and the main power source module. The detecting circuit generates a plurality of detecting signals corresponding to the lighting devices respectively. The intelligent control module generates a feedback signal and transmits the feedback signal to the main power source module. The main power source module adjusts the electricity signal according to the feedback signal.
    Type: Grant
    Filed: August 18, 2022
    Date of Patent: August 8, 2023
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu, Chun Ming Liu
  • Patent number: 11719417
    Abstract: A lamp tube structure capable of preventing glue from overflowing includes a hollow tube body and a cap body. The cap body covers the opening of the hollow tube body. The inner surface of the cap body has a plurality of ring-shaped protrusion portions arranged to be parallel with each other. The glue is distributed over the inner surface of the cap body and the protrusion portions can prevent the glue from overflowing. The outer surface of the hollow tube body contacts the protrusion portions. The protrusion portions inside the cap body can avoid that the glue overflows from the gap between the cap body and the hollow tube body in order to improve tightness. Thus, the contact area between the glue and the inner wall of the cap body can increase, so the cap body and the hollow tube body can be firmly fixed with each other.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: August 8, 2023
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu, Honggang Sun
  • Publication number: 20230170170
    Abstract: A method for increasing the protection range of a thermal fuse, which includes the following steps: disposing the thermal fuse on a circuit board including a circuit loop, a first heat generating element and a second heat generating element; the second heat generating element is electrically connected to the circuit loop; electrically connecting the first heat generating element to the circuit loop; and disposing the heat conducting material on the circuit loop and making the heat conducting material cover the thermal fuse, the first heat generating element and the second heat generating element.
    Type: Application
    Filed: January 9, 2022
    Publication date: June 1, 2023
    Applicant: Xiamen PVTECH Co., Ltd.
    Inventors: FUXING LU, RONGTU LIU
  • Publication number: 20230156895
    Abstract: A lighting system with illumination-balancing function is provided, which includes a plurality of lighting devices distributed over a lighting zone. Each of the lighting devices includes a control module and a light-emitting module. The light-emitting module is connected to the control module. When the light-emitting module malfunctions, the control module transmits a malfunctioning signal to the other lighting devices not malfunctioning, such that the brightness of each of the lighting devices, not malfunctioning and adjacent to the lighting device malfunctioning, increases so as to make the illumination of the lighting zone be substantially equal to a predetermined value.
    Type: Application
    Filed: February 16, 2022
    Publication date: May 18, 2023
    Applicant: Xiamen PVTECH Co., Ltd.
    Inventors: FUXING LU, RONGTU LIU, HAO YE
  • Publication number: 20230097241
    Abstract: A power system capable of preventing from mistakenly triggering an electric shock protection function of a lamp tube and the method thereof is provided. The power system includes a live wire input end, a neutral wire input end and a capacitive component. The live wire input end is connected to a first node; the first node is used to connect to the live wire terminal of the electric shock protection circuit of a first light-emitting module. The neutral wire input end is connected to a second node; the second node is used to connect to the neutral wire terminal of the electric shock protection circuit of the first light-emitting module. One end of the capacitive component is connected to the first node and the other end thereof is connected to the second node.
    Type: Application
    Filed: November 9, 2021
    Publication date: March 30, 2023
    Applicant: Xiamen PVTECH Co., Ltd.
    Inventors: FUXING LU, RONGTU LIU
  • Patent number: 11585520
    Abstract: A high-durability tri-proof lamp with color temperature adjustment function is provided, which includes a lamp housing, a movable support plate, a circuit board and a driving power source. The lamp housing has two connection holes and a guiding groove. The lamp housing is hollow and has a chamber; the connection holes are disposed at the two ends of the lamp housing. The guiding groove includes two lateral guiding slots disposed at the two sides of the chamber. The movable support plate is disposed in the chamber. One side of the movable support plate and the other side thereof are inserted into the lateral guiding slots, such that the movable support plate is able to move along the guiding groove. The circuit board is disposed in the chamber and connected to the movable support plate. The driving power source is disposed on and electrically connected to the circuit board.
    Type: Grant
    Filed: January 9, 2022
    Date of Patent: February 21, 2023
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu, Chun Ming Liu
  • Publication number: 20220412515
    Abstract: A dimmable lamp tube is provided, which includes a first lamp head, a second lamp head and a lamp tube body. The first lamp head has a brightness adjustment switch. The second lamp head has a power adjustment switch. The lamp tube body includes a circuit board and a plurality of light-emitting elements. The light-emitting elements are disposed on the circuit board. The circuit board includes a brightness adjustment switch connection terminal and a power adjustment switch connection terminal. The brightness adjustment switch is connected to the brightness adjustment switch connection terminal and the power adjustment switch is connected to the power adjustment switch connection terminal.
    Type: Application
    Filed: September 26, 2021
    Publication date: December 29, 2022
    Applicant: Xiamen PVTECH Co., Ltd.
    Inventors: FUXING LU, RONGTU LIU, CHUN MING LIU
  • Patent number: 11540369
    Abstract: A lighting system with color temperature adjustment function is provided, which includes a lighting device and a mobile temperature signal transmitting device. The lighting device includes a color temperature control module, a wireless signal receiving module and a plurality of light sources having different color temperatures. The mobile temperature signal transmitting device includes a wireless signal transmitting module and a temperature detecting module. The temperature detecting module detects an environmental temperature and transmits a temperature signal to the wireless signal receiving module via the wireless signal transmitting module for the color temperature control module to control the light sources. Thus, the color temperature of the lighting device can be related to the environmental temperature.
    Type: Grant
    Filed: January 6, 2022
    Date of Patent: December 27, 2022
    Inventors: Fuxing Lu, Rongtu Liu
  • Patent number: 11530784
    Abstract: A dimmable lamp tube is provided, which includes a first lamp head, a second lamp head and a lamp tube body. The first lamp head has a brightness adjustment switch. The second lamp head has a power adjustment switch. The lamp tube body includes a circuit board and a plurality of light-emitting elements. The light-emitting elements are disposed on the circuit board. The circuit board includes a brightness adjustment switch connection terminal and a power adjustment switch connection terminal. The brightness adjustment switch is connected to the brightness adjustment switch connection terminal and the power adjustment switch is connected to the power adjustment switch connection terminal.
    Type: Grant
    Filed: September 26, 2021
    Date of Patent: December 20, 2022
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu, Chun Ming Liu
  • Patent number: 11528793
    Abstract: A high-compatibility lighting dimmer is provided, which includes an impedance inspection avoidance module, a dimming operation module, an alternating-voltage input module and a dimming control module. The impedance inspection avoidance circuit is connected to a load via an output end. The dimming operation module is connected to the impedance inspection avoidance module and includes a control unit. The alternating-voltage input module is connected to the dimming operation module and converts an input alternating voltage into a pulsating direct voltage to power the load and the dimming operation module. The dimming control module is connected to the control unit and transmits a dimming signal to the control unit. When the load is driven, the control unit starts timing and switches the impedance inspection avoidance module after a predetermined time period, whereby the dimming operation module directly powers the load and performs dimming for the load according to the dimming signal.
    Type: Grant
    Filed: October 1, 2021
    Date of Patent: December 13, 2022
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu
  • Patent number: 11503691
    Abstract: An always-on lighting device having multiple power controllers is provided, which includes a first power controller, a first light source, a second power controller and a second light source. The first power controller and the second power controller execute an alternate mode. In the alternate mode, the first power controller keeps the first light source in on state within a predetermined time period. Then, the first power controller turns off the first light source after the predetermine time period passes and transmits a control signal to the second power controller, such that the second power controller keeps the second light source in on state within the predetermined time period.
    Type: Grant
    Filed: December 5, 2021
    Date of Patent: November 15, 2022
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu, Hao Ye
  • Patent number: 11503686
    Abstract: A lamp tube with anti-shock protection and compatible with a plurality of current stable power supply modes is provided. The lamp tube includes a plurality of lighting loads and a control circuit. The control circuit includes an electric shock protection circuit, a filtering and constant current driving circuit, an electronic rectifier circuit and a fast-start inductive rectifier detection and driving circuit.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: November 15, 2022
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu
  • Patent number: 11490478
    Abstract: A high-compatibility dimmer circuit is provided, which includes an impedance inspection avoidance module, a dimming module and an alternating-current input module. The impedance inspection avoidance module is connected to a load via an output end. The dimming module is connected to the impedance inspection avoidance module and includes a control unit. The alternating-current input module is connected to the dimming module, and converts an input alternating voltage into a pulsating direct voltage so as to power the load and the dimming module. When the load is driven, the control unit starts timing and switches the impedance inspection avoidance module after a predetermined time period. In this way, the dimming module can directly power the load and perform dimming for the load according to a dimming signal.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: November 1, 2022
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu, Hao Ye
  • Patent number: 11477875
    Abstract: A lighting system having multiple light sources is provided, which includes a first light source and a second light source. The first light source includes a first control module, a second memory module, a first lighting-emitting module and a first detection module. The second light source includes a second control module. When the first light source and the second light source are electrically connected to a power source, the first control module and the second control module turn off the first light source and the second light source respectively. The first control module reads the data of the first memory module of the first light source to determine whether the first light source malfunctions, and turns on the first light-emitting module when the first control module determines that the first light source does not malfunction. Then, the first detection module keeps detecting whether the first light source malfunctions.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: October 18, 2022
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu, Hao Ye
  • Publication number: 20220272807
    Abstract: A lamp tube with anti-shock protection and compatible with a plurality of current stable power supply modes is provided. The lamp tube includes a plurality of lighting loads and a control circuit. The control circuit includes an electric shock protection circuit, a filtering and constant current driving circuit, an electronic rectifier circuit and a fast-start inductive rectifier detection and driving circuit.
    Type: Application
    Filed: September 16, 2021
    Publication date: August 25, 2022
    Applicant: Xiamen PVTECH Co., Ltd.
    Inventors: FUXING LU, RONGTU LIU
  • Patent number: 11408601
    Abstract: A first lamp tube includes a first lamp housing, a plurality of first light-emitting elements disposed within the first lamp housing, a first lamp head connected to the first lamp housing, and a color temperature switch module disposed on the first lamp head. A second lamp tube includes a second lamp housing, a plurality of second light-emitting elements disposed within the second lamp housing, a second lamp head connected to the second lamp housing, and a power adjustment terminal disposed on the second lamp head configured to be connected to an external power adjustment device. A coupling assembly is disposed between the first lamp housing and the second lamp housing to fix the first lamp housing to the second lamp housing, and electrically connect the first lamp tube to the second lamp tube.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: August 9, 2022
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu, Honggang Sun
  • Patent number: 11313548
    Abstract: A protection system for a lamp is provided. One or more control circuit boards and one or more thermal devices are disposed in the lamp. The control circuit board has an electrical circuit. The thermal device is disposed on the control circuit board and connected to the electrical circuit. The thermal device is attached to one or more thermal fuses with a binding member. Accordingly, the safety of the driving power supply can be increased. Moreover, the thermal fuse not only provides protection for the inputs of the driving power supply, but also provides protection for other main or branch circuits.
    Type: Grant
    Filed: May 25, 2020
    Date of Patent: April 26, 2022
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu
  • Patent number: 11291096
    Abstract: A dimmable light tube with anti-electric shock protection function includes two conductive pin assemblies, a bridge rectifier, an anti-electric shock detection control circuit, and a buck-boost constant current module. The bridge rectifier is connected to the conductive pin assemblies. The anti-electric shock detection control circuit is connected to the bridge rectifier, and the anti-electric shock detection control circuit has an output end and a resistor. The input end of the buck-boost constant current module is connected to the output end and the driving module is connected to the resistor so as to perform the leakage control function. The current conduction angle of the current generated by the transmission of the anti-electric shock detection control circuit can be changed by the buck-boost constant current module, so that the dimming function can be provided.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: March 29, 2022
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu
  • Patent number: 11265987
    Abstract: A lamp with anti-shock protection and compatible with a plurality of power supply modes is provided. The lamp includes a plurality of lighting elements and a control circuit. The control circuit includes an electric shock protection circuit, a filtering and constant current driving circuit, a type A electronic rectifier circuit and a fast-start inductive rectifier detection and driving circuit. The fast-start inductive rectifier detection and driving circuit includes a first resistor R11, a TVS1 and a PTC resistor. The PTC resistor is electrically connected in series with the TVS1. The first resistor R11 is connected in parallel to both ends of the TVS1 as a dummy load. The input voltage rectification and voltage clamping module rectifies the input AC voltage to convert it to pulsating DC voltage and then clamps the rectified pulsating DC voltage as the power supply for the signal transmission component U1.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: March 1, 2022
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu
  • Patent number: 11209150
    Abstract: A lamp socket of a color temperature adjustable lamp tube includes a housing and a color temperature adjustment member. The color temperature adjustment member is disposed on the housing and is connected to a plurality of light emitting members corresponding to two or more color temperatures. The color temperature adjustment member is provided for switching the light emitting members to change the color temperature of a light.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: December 28, 2021
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu, Honggang Sun