LED (light-emitting diode) lamp and filament thereof

Abstract

An embodiment of the invention discloses an LED lamp and a filament thereof. The LED lamp filament comprises a substrate, light-emitting units fixed on at least one side surface of the substrate and a sealant layer coving on the periphery of the light-emitting units; the substrate is arranged in a shape of a long and thin strip-shaped structure; the light-emitting units comprise a plurality of blue light chips and red light chips, and the blue light chips and the red light chips are arranged and distributed on the substrate regularly and are sequentially connected in series. According to the LED lamp filament, light-emitting units consist of combinations of the blue light chips and the red light chips are arranged on the substrate, so that the color rendering is high and the light-emitting angle is large.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to an LED lamp and a filament thereof. Background technique [0002] The filaments of traditional lighting fixtures are generally composed of tungsten wires and other metal wires that can directly emit light. Such filaments generally have defects such as short life and high power consumption, and generally only emit yellow light, with poor color rendering. [0003] With the development of science and technology, LED lights are gradually replacing traditional lighting fixtures. The existing LED lamp is provided with a light emitting module, which includes a square or circular bracket, an LED chip arranged on one side of the bracket, and a lens covering the surface of the LED chip. In existing LED lamps, fluorescent powder is generally arranged on a blue LED chip to obtain white light, and the overall color rendering of the LED lamp is relatively low. At the same time, since th...

AI Technical Summary

Problems solved by technology

Existing LED lamps generally set phosphor powder on the blue LED chip to obtain white light, and the overall color rendering of LED lamps is low

At the same time, since the existing support is generally made of copper, aluminum and other conductive metal materials such as injection molded PPA, which itself does not have light transmission, the light path can only realize 180° plane transmission on the side where the LED chip is installed at most, and the overall light-emitting angle is small , even under the secondary optical effect of the lens, the general luminous angle does not exceed 165°, and the PPA material is prone to yellowing and discoloration, which affects the overall quality of the LED lamp

In addition, most of the existing LED light-emitting modules adopt the planar dispensing packaging process, which has low efficiency and yield rate, and high production cost.

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