Xiamen Eco Lighting Co. Ltd.

Xiamen Leedarson Lighting Co., Ltd

Yongshu Zheng

Liangliang Cao

Hongkui Jiang

Qiyuan Wang

Huiwu Chen

Yanbiao Chen

Yuxin Huang

A light bulb apparatus includes a bulb shell, a flexible filament, a driver circuit and a bulb cap. The bulb shell has a top area and a lateral area. The flexible filament has a top portion and a lateral portion. The flexible filament is twisted as a spiral shape. More than 50% of a first light emitted from the lateral portion passes through the lateral area. More than 50% of a second light emitted from the top portion passes through the top area of the bulb shell. The driver circuit converts an external power source to a driving current supplied to the flexible filament. The bulb cap encloses the driver circuit for connecting to the external power source. The top area of the bulb shell and the bulb cap are located at two opposite sides of the lateral area of the bulb shell.

Light bulb apparatus having a twisted LED filament for improved luminous efficiency and light distribution

An LED filament assembly includes a frame, a first electrode disposed on a first end of the frame, and a second electrode disposed on a second end of the frame. The LED filament assembly includes a first group of LED chips capable of emitting a first color, a second group of LED chips capable of emitting a second color, and a third group of LED chips capable of emitting a third color. The first group of LED chips is disposed on the frame along a longitudinal axis, connected in series, and electrically connected to the first electrode and the second electrode. Similarly, the second and the third group of LED chips are also disposed on the frame along the longitudinal axis, connected in series, and electrically connected to the first electrode and the second electrode. A lamp including such an LED filament assembly is also disclosed.

LED filament assembly and lamp including the same

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Xiamen, China

Yongshu Zheng