Patents by Inventor Jian-Pu Chen
Jian-Pu Chen 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: 8636377Abstract: A light tube holder includes a base and 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.Type: GrantFiled: November 22, 2011Date of Patent: January 28, 2014Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd, Hon Hai Precision Industry Co., Ltd.Inventors: Qing-Shan Cao, Jian-Pu Chen, Yu Hu
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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: 8382502Abstract: 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 three conductive elastic pieces therein. One elastic piece is electrically connected to an LED tube drive circuit board and a fluorescent tube, and the other two elastic pieces are respectively electrically connected to the LED and fluorescent tube drive circuit boards. A normally closed switch is located in the one of the connectors. The switch has a first end connected between a power supply and a first end of a ballast, and a second end connected to a second end of the ballast. When the LED tube is mounted to the holder, the switch is closed, and when the fluorescent tube is mounted to the holder the switch is open.Type: GrantFiled: November 22, 2011Date of Patent: February 26, 2013Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Qing-Shan Cao, Yu Hu, Jian-Pu Chen
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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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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: 20130003365Abstract: 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 three conductive elastic pieces therein. One elastic piece is electrically connected to an LED tube drive circuit board and a fluorescent tube, and the other two elastic pieces are respectively electrically connected to the LED and fluorescent tube drive circuit boards. A normally closed switch is located in the one of the connectors. The switch has a first end connected between a power supply and a first end of a ballast, and a second end connected to a second end of the ballast. When the LED tube is mounted to the holder, the switch is closed, and when the fluorescent tube is mounted to the holder the switch is open.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, JIAN-PU CHEN
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Publication number: 20130003380Abstract: A light tube holder includes a base and 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.Type: ApplicationFiled: November 22, 2011Publication date: January 3, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTDInventors: QING-SHAN CAO, JIAN-PU CHEN, YU HU
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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