Patents by Inventor Zheng-Nian Liu
Zheng-Nian 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).
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Patent number: 8604715Abstract: A lamp tube switch circuit includes a first connector and a second connector for connecting a lamp tube, a power supply, a switch module including at least six switches connected between the power port, the first connector and second connector, a detecting unit connected between the first connector and the second connector, a control unit, a ballast and a starter. The detecting unit detects impedances between the pins of the lamp tube to determine the type of the lamp tube. The control unit is connected to the detecting unit, and operated to have some of the switches to turn one and the others to turn off whereby a drive circuit is formed enabling power from the power supply to flow through the lamp tube to make the lamp tube to generate light.Type: GrantFiled: August 22, 2011Date of Patent: December 10, 2013Assignees: Hong Fu Jin Precision (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Qing-Shan Cao, Zheng-Nian Liu, Yu Hu, Jian-Pu Chen
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Patent number: 8604706Abstract: A lamp tube switch circuit supplies power to a selected LED/fluorescent lamp tube connected between first and second connectors and comprises a ballast and a starter. A power supply has positive and negative terminals. A switch module comprises first, second and third switches each having a first end connecting with the positive terminal, fourth and fifth switches each having a first end connecting with the negative terminal and a sixth switch having a first end connecting with the first connector. A button module has six buttons one of which is correspondent to the selected lamp tube. A control unit is connected to the button module, and functions to turn on and turn off the switches with a predetermined mode according the selected lamp tube.Type: GrantFiled: August 22, 2011Date of Patent: December 10, 2013Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Qing-Shan Cao, Zheng-Nian Liu, Lin-Shu Zhou, Ye-La An
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Patent number: 8604721Abstract: A lamp tube switching circuit includes a first connector and a second connector for connecting either an LED lamp tube or a fluorescent type lamp tube, a switch module being a mechanical switch including first, second and third switches, a starter and ballast. Each of the first and second switches has a static terminal for connecting with a power supply, and four dynamic terminals for selectively connecting with the static terminal thereof. Different circuits can be configured by adjusting the connection between the static and dynamic terminals, wherein each circuit can drive a selected type of lamp tube to generate light.Type: GrantFiled: August 22, 2011Date of Patent: December 10, 2013Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Qing-Shan Cao, Zheng-Nian Liu, Nan Zeng, Miao-Ping Guo
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Patent number: 8561340Abstract: An illumination device includes a tube holder including two connectors for receiving either a light-emitting diode (LED) tube and or a fluorescent tube. One of the connectors includes a rotary member rotatably received in a through hole defined in a retainer, and three conductive elastic pieces positioned in the retainer around the through hole. One elastic piece is electrically connected to an LED tube drive circuit board and a fluorescent tube drive circuit board, and the other two conductive pieces are electrically connected to the LED and the fluorescent tube drive circuit boards, respectively. The rotary member can be rotated to first and second positions, wherein at the first position, the LED tube can be activated, and at the second position the fluorescent tube can be activated.Type: GrantFiled: November 22, 2011Date of Patent: October 22, 2013Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Qing-Shan Cao, Zheng-Nian Liu, Yu Hu, Jun-Ping Liu
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Patent number: 8403692Abstract: An illumination device includes a light tube holder including two connectors for receiving either a light-emitting diode (LED) tube or a fluorescent tube. One of the connectors includes a rotary member rotatably received in a through hole defined in a retainer, and four conductive elastic pieces positioned in the retainer around the through hole. Two of the conductive pieces are electrically connected to an LED tube drive circuit board and the other two are connected to a fluorescent tube drive circuit board. The rotary member can be rotated to first and second positions, wherein at the first position, the LED tube can be activated, and at the second position the fluorescent tube can be activated.Type: GrantFiled: November 22, 2011Date of Patent: March 26, 2013Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Qing-Shan Cao, Yu Hu, Zheng-Nian Liu, Miao-Ping Guo
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Patent number: 8371867Abstract: An illumination device includes a light tube holder including two connectors for receiving either a light-emitting diode (LED) tube or a fluorescent tube. One of the connectors includes a rotary member rotatably received in a through hole defined in a retainer, and three conductive elastic pieces positioned in the retainer around the through hole. One conductive piece is electrically connected to an LED tube drive circuit board and a fluorescent tube drive circuit board, and the other two conductive pieces are electrically connected to the LED and fluorescent tube drive circuit boards, respectively. The rotary member can be rotated to first and second positions, wherein at the first position, the LED tube can be activated, and at the second position the fluorescent tube can be activated.Type: GrantFiled: November 22, 2011Date of Patent: February 12, 2013Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Qing-Shan Cao, Zheng-Nian Liu, Jian-Pu Chen, Jiang-Fan Qiu
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Patent number: 8371868Abstract: An illumination device includes a light tube holder including two connectors for receiving either a light-emitting diode (LED) tube or a fluorescent tube. The connector includes a rotary member rotatably received in a through hole defined in a retainer, and four conductive elastic pieces positioned in the retainer around the through hole. Two elastic piece are electrically connected to an LED tube drive circuit board, and the other two elastic piece are electrically connected to a fluorescent tube drive circuit board. The rotary member can be rotated to first and second positions, wherein at the first position, the LED tube can be activated, and at the second position the fluorescent tube can be activated.Type: GrantFiled: November 22, 2011Date of Patent: February 12, 2013Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Qing-Shan Cao, Yang Shu, Zheng-Nian Liu
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Patent number: 8366467Abstract: An illumination device includes a light tube holder including two connectors for receiving either a light-emitting diode (LED) tube or a fluorescent tube. The connector includes a rotary member rotatably received in a through hole defined in a retainer, and three conductive elastic pieces positioned in the retainer around the through hole. One elastic piece is electrically connected to an LED tube drive circuit board, and the other two elastic piece are electrically connected to a fluorescent tube drive circuit board. The rotary member can be rotated to first and second positions, wherein at the first position, the LED tube can be activated, and at the second position the fluorescent tube can be activated. The LED tubes has two conductive pins at each end thereof. The LED tube can be mounted to the connectors regardless an orientation of the LED tube.Type: GrantFiled: November 22, 2011Date of Patent: February 5, 2013Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Qing-Shan Cao, Zheng-Nian Liu, Lin-Shu Zhou, Ye-La An
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Publication number: 20130003364Abstract: An illumination device includes a light tube holder including two connectors for receiving either a light-emitting diode (LED) tube or a fluorescent tube. The connector includes a rotary member rotatably received in a through hole defined in a retainer, and four conductive elastic pieces positioned in the retainer around the through hole. Two elastic piece are electrically connected to an LED tube drive circuit board, and the other two elastic piece are electrically connected to a fluorescent tube drive circuit board. The rotary member can be rotated to first and second positions, wherein at the first position, the LED tube can be activated, and at the second position the fluorescent tube can be activated.Type: ApplicationFiled: November 22, 2011Publication date: January 3, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: QING-SHAN CAO, YANG SHU, ZHENG-NIAN LIU
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Publication number: 20130002170Abstract: An illumination device includes a light tube holder including two connectors for receiving either a light-emitting diode (LED) tube or a fluorescent tube. One of the connectors includes a rotary member rotatably received in a through hole defined in a retainer, and four conductive elastic pieces positioned in the retainer around the through hole. Two of the conductive pieces are electrically connected to an LED tube drive circuit board and the other two are connected to a fluorescent tube drive circuit board. The rotary member can be rotated to first and second positions, wherein at the first position, the LED tube can be activated, and at the second position the fluorescent tube can be activated.Type: ApplicationFiled: November 22, 2011Publication date: January 3, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: QING-SHAN CAO, YU HU, ZHENG-NIAN LIU, MIAO-PING GUO
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Publication number: 20130003366Abstract: An illumination device includes a light tube holder including two connectors for receiving either a light-emitting diode (LED) tube or a fluorescent tube. The connector includes a rotary member rotatably received in a through hole defined in a retainer, and three conductive elastic pieces positioned in the retainer around the through hole. One elastic piece is electrically connected to an LED tube drive circuit board, and the other two elastic piece are electrically connected to a fluorescent tube drive circuit board. The rotary member can be rotated to first and second positions, wherein at the first position, the LED tube can be activated, and at the second position the fluorescent tube can be activated. The LED tubes has two conductive pins at each end thereof. The LED tube can be mounted to the connectors regardless an orientation of the LED tube.Type: ApplicationFiled: November 22, 2011Publication date: January 3, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., TLDInventors: QING-SHAN CAO, ZHENG-NIAN LIU, LIN-SHU ZHOU, YE-LA AN
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Publication number: 20130002150Abstract: A lamp tube switch circuit supplies power to a selected LED/fluorescent lamp tube connected between first and second connectors and comprises a ballast and a starter. A power supply has positive and negative terminals. A switch module comprises first, second and third switches each having a first end connecting with the positive terminal, fourth and fifth switches each having a first end connecting with the negative terminal and a sixth switch having a first end connecting with the first connector. A button module has six buttons one of which is correspondent to the selected lamp tube. A control unit is connected to the button module, and functions to turn on and turn off the switches with a predetermined mode according the selected lamp tube.Type: ApplicationFiled: August 22, 2011Publication date: January 3, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: QING-SHAN CAO, ZHENG-NIAN LIU, LIN-SHU ZHOU, YE-LA AN
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Publication number: 20130002151Abstract: A lamp tube switch circuit includes a first connector and a second connector for connecting a lamp tube, a power supply, a switch module including at least six switches connected between the power port, the first connector and second connector, a detecting unit connected between the first connector and the second connector, a control unit, a ballast and a starter. The detecting unit detects impedances between the pins of the lamp tube to determine the type of the lamp tube. The control unit is connected to the detecting unit, and operated to have some of the switches to turn one and the others to turn off whereby a drive circuit is formed enabling power from the power supply to flow through the lamp tube to make the lamp tube to generate light.Type: ApplicationFiled: August 22, 2011Publication date: January 3, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: QING-SHAN CAO, ZHENG-NIAN LIU, YU HU, JIAN-PU CHEN
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Publication number: 20130002152Abstract: A lamp tube switching circuit includes a first connector and a second connector for connecting either an LED lamp tube or a fluorescent type lamp tube, a switch module being a mechanical switch including first, second and third switches, a starter and ballast. Each of the first and second switches has a static terminal for connecting with a power supply, and four dynamic terminals for selectively connecting with the static terminal thereof. Different circuits can be configured by adjusting the connection between the static and dynamic terminals, wherein each circuit can drive a selected type of lamp tube to generate light.Type: ApplicationFiled: August 22, 2011Publication date: January 3, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: QING-SHAN CAO, ZHENG-NIAN LIU, NAN ZENG, MIAO-PING GUO
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Publication number: 20130002171Abstract: An illumination device includes a tube holder including two connectors for receiving either a light-emitting diode (LED) tube and or a fluorescent tube. One of the connectors includes a rotary member rotatably received in a through hole defined in a retainer, and three conductive elastic pieces positioned in the retainer around the through hole. One elastic piece is electrically connected to an LED tube drive circuit board and a fluorescent tube drive circuit board, and the other two conductive pieces are electrically connected to the LED and the fluorescent tube drive circuit boards, respectively. The rotary member can be rotated to first and second positions, wherein at the first position, the LED tube can be activated, and at the second position the fluorescent tube can be activated.Type: ApplicationFiled: November 22, 2011Publication date: January 3, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: QING-SHAN CAO, ZHENG-NIAN LIU, YU HU, JUN-PING LIU
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Publication number: 20130003367Abstract: An illumination device includes a light tube holder including two connectors for receiving either a light-emitting diode (LED) tube or a fluorescent tube. One of the connectors includes a rotary member rotatably received in a through hole defined in a retainer, and three conductive elastic pieces positioned in the retainer around the through hole. One conductive piece is electrically connected to an LED tube drive circuit board and a fluorescent tube drive circuit board, and the other two conductive pieces are electrically connected to the LED and fluorescent tube drive circuit boards, respectively. The rotary member can be rotated to first and second positions, wherein at the first position, the LED tube can be activated, and at the second position the fluorescent tube can be activated.Type: ApplicationFiled: November 22, 2011Publication date: January 3, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: QING-SHAN CAO, ZHENG-NIAN LIU, JIAN-PU CHEN, JIANG-FAN QIU