Patents Assigned to Ledtech Electronics Corp.
  • Patent number: 8388171
    Abstract: An LED lamp tube with improved sealing and cooling performance includes a plastic tube shell, an LED lamp strip, a metal casing and two end caps. The plastic tube shell is elongate and includes a light condensing structure and a light reflection structure integrally formed by extrusion and an installation chamber formed between the light condensing structure and the light reflection structure. The LED lamp strip is held in the installation chamber and at one side of the light reflection structure. The metal casing is coupled on the outer side of the light reflection structure. Each of the end caps is coupled on each of two ends of the plastic tube shell, thus can achieve IP67 waterproof and dustproof level, and also can resolve cooling problem of the lamp tube.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: March 5, 2013
    Assignee: Ledtech Electronics Corp.
    Inventors: Chienchen Tung, Qing Ma, Kegang Yue, Deliang Xiao, Xianhua Zhao
  • Patent number: 7926985
    Abstract: A custom assembly light-emitting module includes a base unit, a light-emitting unit and a lens unit. The base unit has a heat-dissipating base and two first retaining structures extending upwards from two opposite lateral sides of the heat-dissipating base. The light-emitting unit is detachably disposed on the heat-dissipating base. The lens unit has a lens and two second retaining structures formed on two opposite lateral sides of the lens, wherein the lens unit is detachably disposed over the light-emitting unit by matching the two first retaining structures and the two second retaining structures. Hence, the base unit, the light-emitting unit and the lens unit can be replaced according to the user's different requirements.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: April 19, 2011
    Assignee: Ledtech Electronics Corp.
    Inventors: Chien-Chen Teng, Fang-Po Wang, Wen-Chieh Chang Chien
  • Patent number: 7887226
    Abstract: An LED lamp tube is disclosed to include a tube that admits light, circuit boards respectively mounted inside the tube, each circuit board carrying an array of LEDs, two end caps respectively capped on the ends of the tube to hold the circuit boards inside the tube and connectable to connectors of a conventional fluorescent bulb holder to secure the tube to the conventional fluorescent bulb holder, and a power cord extending from the circuit boards out of the tube for connection to power supply to obtain the necessary working voltage for the LEDs.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: February 15, 2011
    Assignee: Ledtech Electronics Corp.
    Inventors: Ming-Chung Huang, Yu-Yang Liu, Fu-Hsung Ou, Ying-Hsuan Chen
  • Patent number: 7806557
    Abstract: An assembly of a lighting unit and a receptacle unit includes at least one receptacle unit and at least one lighting unit. The receptacle unit has an outer housing provided with at least one first connection portion and at least one second connection portion electrically connected to the first connection portion in the outer housing. The lighting unit is electrically connected to one of the first and second connection portions of the receptacle unit, so that the lighting unit and the receptacle unit can be independently rotated in relation to each other along a connection axis thereof.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: October 5, 2010
    Assignee: Ledtech Electronics Corp.
    Inventors: Yen-Fu Liu, Chien-Hung Tsai, Hsuan-Hui Chen
  • Patent number: 7772603
    Abstract: An array type light-emitting device with high color rendering index includes: a substrate, an array type light-emitting module, a plurality of wavelength-converting layers, and a plurality of transparent layers. The array type light-emitting module is composed of a plurality of light-emitting chip rows, and each light-emitting chip row has a plurality of first light-emitting chips and at least one second light-emitting chip. The wavelength-converting layers are respectively covered on the first light-emitting chips. Therefore, a part of visible light emitted by the first light-emitting chips is absorbed and converted into visible light with another emission peak wavelength range via the wavelength-converting layers, and the visible light with another emission peak wavelength range mixes with projecting light projected from the second light-emitting chips to make the array type light-emitting device generate mixed white light with a color rendering index of between 90 and 95.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: August 10, 2010
    Assignee: Ledtech Electronics Corp.
    Inventors: Chih-Liang Su, Hsin-Chun Liu, Fang-Po Wang
  • Patent number: 7699490
    Abstract: A light-emitting structure for generating an annular illumination effect includes a light-guiding module, a cover module, and a first light-emitting module. The light-guiding module has a hollow light-guiding body and a reflecting layer formed on an inner surface of the hollow light-guiding body. The cover module has a first cover body disposed on one end side of the hollow light-guiding body and a second cover body disposed on the other opposite end side of the hollow light-guiding body. The first light-emitting module has a plurality of first light-emitting elements disposed between the hollow light-guiding body and the first cover body. Therefore, first light beams generated by the first light-emitting elements are projected onto the hollow light-guiding body, and the first light beams are guided by the hollow light-guiding body and are reflected by the reflecting layer in order to make the hollow light-guiding body generate the annular illumination effect.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: April 20, 2010
    Assignees: Ledtech Electronics Corp., Energyled Corporation
    Inventors: Chien-Hung Tsai, Yao-I Wang, Pei-Hung Meng, Wei-Jen Hsu
  • Patent number: 7682039
    Abstract: A male terminal cap and a female terminal cap are mounted on the two ends of a strip light shade to form an extensible strip light shade. Electrical contacts are formed in the terminal caps for electrical coupling when two light shades are connected through mechanical coupling of the terminal caps.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: March 23, 2010
    Assignee: Ledtech Electronics Corp.
    Inventors: Shu Shoung Kuo, Yen Fu Liu, Yu Yang Liu
  • Patent number: 7655954
    Abstract: An array type light-emitting module includes a blue, a red, a green, a yellow and an amber light-emitting chip sets. Wavelength-converting layer set covers the blue light-emitting chip set. Transparent layer sets cover the red, green, yellow, and amber light-emitting chip sets. A portion of the visible light emitted by the blue light-emitting chip set is converted into visible light with another emission peak wavelength range via the wavelength-converting layer set. The converted visible light mixes with light projected from the red, the green, the yellow and the amber light-emitting chip sets to generate white light with a color rendering index ranging between 90 and 96.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: February 2, 2010
    Assignee: Ledtech Electronics Corp.
    Inventors: Chih-Liang Su, Hsin-Chun Liu, Fang-Po Wang
  • Patent number: 7600907
    Abstract: An LED lighting device includes a light pipe and a support portion. The light pipe includes a light emitting diode module inside and two first fastening portions on an outer wall thereof. A support portion secures the light pipe and provides a rotatable function for the light pipe. The support portion further includes a clamp and a base member. A clamp has two second fastening portions at opposite sides thereof. The second fastening portions engage with the first fastening portions. The clamp further includes a strip hollow slot. A base member includes a pair of positioning portions for holding an outer wall of the clamp, wherein a fastener is led through the strip hollow slot and fastened on the base member. The clamp slides relative to the base member along the strip hollow slot such that the light pipe rotates relative to the base member.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: October 13, 2009
    Assignee: Ledtech Electronics Corp.
    Inventors: Yen-Fu Liu, Hung-Hsin Lee
  • Patent number: 7556396
    Abstract: A lamp assembly includes at least one electrical socket and a tube. The electrical socket includes an insulating body and two connectors set in the insulating body. The insulating body has an insertion hole. The two connectors have a contact plate exposed in the insertion hole. The tube has two terminal lugs disposed at least at one end thereof. The end of the tube and the two terminal lugs are inserted and installed in the insertion hole of the electrical socket. The terminal lugs electrically contact the contact plate of the connector. The end of the tube installed in the insertion hole is rotatable, the lighting angle can be adjusted. Thus, the tube can be electrically connected with the electrical socket quickly, the tube is lit instantly, and the tube can be rotated to adjust the lighting angle.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: July 7, 2009
    Assignee: Ledtech Electronics Corp.
    Inventors: Shu-Hsiung Kuo, Yen-Fu Liu, Yu-Yang Liu
  • Patent number: 7441922
    Abstract: A LED lamp tube is disclosed to include a tube that admits light, circuit boards respectively mounted inside the tube, each circuit board carrying an array of LEDs, two end caps respectively capped on the ends of the tube to hold the circuit boards inside the tube and connectable to connectors of a conventional fluorescent bulb holder to secure the tube to the conventional fluorescent bulb holder, and a power cord extending from the circuit boards out of the tube for connection to power supply to obtain the necessary working voltage for the LEDs.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: October 28, 2008
    Assignee: Ledtech Electronics Corp.
    Inventors: Ming-Chung Huang, Yu-Yang Liu, Fu-Hsung Ou, Ying-Hsuan Chen
  • Patent number: 7344290
    Abstract: A Lamp module, which includes a metal holder frame that defines a longitudinal open chamber and transverse mounting slots across the longitudinal open chamber, LEDs that are respectively mounted in the transverse mounting slots and have a respective top metal frame fastened to the top wall of the metal holder frame for quick dissipation of heat, light guides mounted in the longitudinal open chamber of the holder frame and respectively perpendicularly attached to the LEDs, and reflectors respectively embedded in the light guides for reflecting light in one direction.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: March 18, 2008
    Assignee: Ledtech Electronics Corp.
    Inventors: Ming-Chung Huang, Yu-Yang Liu
  • Patent number: D554277
    Type: Grant
    Filed: March 31, 2007
    Date of Patent: October 30, 2007
    Assignee: Ledtech Electronics Corp.
    Inventors: Yu-Yang Liu, Wen-Chieh Chang Chien
  • Patent number: D567968
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: April 29, 2008
    Assignee: Ledtech Electronics Corp.
    Inventors: Hsin-Chun Liu, Yao-I Wang, Chih-Liang Su, Fang-Po Wang
  • Patent number: D578248
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: October 7, 2008
    Assignee: Ledtech Electronics Corp.
    Inventors: Hung-Hsin Lee, Yen-Fu Liu
  • Patent number: D583496
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: December 23, 2008
    Assignee: Ledtech Electronics Corp.
    Inventors: Shu Shoung Kuo, Yen Fu Liu, Yu Yang Liu
  • Patent number: D662629
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: June 26, 2012
    Assignee: LEDTECH Electronics Corp.
    Inventors: Chienchen Tung, Qing Ma, Kegang Yue, Deliang Xiao, Xianhua Zhao