US 10,890,299 B2
LED filament lamp
Yiping Ye, ZheJiang (CN); Jianwu Xue, ZheJiang (CN); and Guocai Chen, ZheJiang (CN)
Assigned to Zhejiang Z-Light Optoelectronics Co., Ltd., Hangzhou (CN)
Filed by Zhejiang Z-Light Optoelectronics Co., Ltd., ZheJiang (CN)
Filed on Dec. 26, 2018, as Appl. No. 16/232,325.
Claims priority of application No. 2017 1 1433384 (CN), filed on Dec. 26, 2017.
Prior Publication US 2019/0195435 A1, Jun. 27, 2019
Int. Cl. F21K 9/235 (2016.01); F21V 3/06 (2018.01); F21V 19/00 (2006.01); F21V 23/06 (2006.01); F21V 17/06 (2006.01); F21K 9/232 (2016.01); F21K 9/238 (2016.01); F21V 23/02 (2006.01); F21Y 115/10 (2016.01); F21Y 103/10 (2016.01)
CPC F21K 9/235 (2016.08) [F21K 9/232 (2016.08); F21K 9/238 (2016.08); F21V 3/061 (2018.02); F21V 17/06 (2013.01); F21V 19/003 (2013.01); F21V 23/02 (2013.01); F21V 23/06 (2013.01); F21Y 2103/10 (2016.08); F21Y 2115/10 (2016.08)] 10 Claims
OG exemplary drawing
 
1. An LED filament lamp, comprising
a transparent hood with an opening at a lower end;
a lamp cap connected to the lower end of the transparent hood;
a light emitting source arranged in the transparent hood;
a support base arranged in a space enclosed by the transparent hood and the lamp cap,
wherein the light emitting source is fixed at the support base, a lower end of the light emitting source is connected with the lamp cap through a current limiting resistor, and the light emitting source comprises:
a single strip-shaped substrate, two ends of the strip-shaped substrate being conductive electrical connecting ends; and
a plurality of LED wafers, wherein the plurality of LED wafers are connected in turn and arranged on the strip-shaped substrate at an interval to form a strip-shaped LED wafer set, a rectifying unit electrically connected with the strip-shaped LED wafer set is arranged at each one of the two ends of the strip-shaped LED wafer set, each one of the rectifying units is fixed on the strip-shaped substrate and is connected with each corresponding one of the electrical connecting ends, each one of the electrical connecting ends is capable of being directly connected with an alternating current and energizes the strip-shaped LED wafer set to lighten the LED wafers,
wherein the rectifying units include a first rectifying unit and a second rectifying unit which are arranged on one side of the strip-shaped LED wafer set, and a third rectifying unit and a fourth rectifying unit which are arranged on the other side of the strip-shaped LED wafer set, the four rectifying units and the strip-shaped LED wafer set a communicate with one another to form a rectifying circuit wherein a first conductor and a second conductor are respectively arranged on two lateral sides of the face, on which the LED wafers are fixed, of the strip-shaped substrate, the first conductor is connected with an output terminal of the first rectifying unit, an input terminal of the strip-shaped LED wafer set, and an output terminal of the fourth rectifying unit, and the second conductor is connected with an input terminal of the second rectifying unit, an output terminal of the strip-shaped LED wafer set, and an input terminal of the third rectifying unit,
wherein the first rectifying unit and the second rectifying unit are oppositely arranged, the third rectifying unit and the fourth rectifying unit are oppositely arranged, each one of the rectifying units comprises at least one LED wafer and when each one of the rectifying units is internally provided with a plurality of LED wafers, the LED wafers in each one of the rectifying units are arranged toward the same direction,
wherein the strip-shaped LED wafer set and the rectifying units all are arranged on the same side of the strip-shaped substrate; the LED wafers in the strip-shaped LED wafer set are connected toward the same direction,
wherein the strip-shaped substrate is a transparent or non-transparent strip-shaped substrate, and glue mixed with fluorescent powder is applied to the two sides of the strip-shaped substrate, and
wherein when the lamp cap is connected with an external circuit, a current path is formed between the lamp cap, the current limiting resistor, and the light emitting source to energize the light emitting source, so that the light emitting source emits light.