LED chip-based filament and filament lamp

摘要

Lamp filament based on LED chips, characterized by the fact that the filament based on LED chips includes:a connecting medium, where several LED chips are switched in series, parallel or in series and are attached to a connecting medium, for which LED chips of the first type of LED chips, the second type of LED chips and the third type of LED chips are used at least two of them; the wavelength of the emitted light of the first type of LED chip in the range of 445 to 452 nm, the wavelength of the emitted light of the second type of LED chip in the range of 452 to 460 nm and the wavelength of the emitted light of the third type of LED chip in the range of 460 to 472 nm;a first conductive element and a second conductive element, where the first conductive element and the second conductive element are each mounted on the connecting medium and so configured that an external current flows successively through the first conductive element, the LED chips and the second conductive element;a light conversion powder coating covering the multiple LED chips.