阅读说明：本技术 Led灯珠 (LED lamp bead ) 是由 丁相福 于 2019-11-30 设计创作，主要内容包括：本发明实施例提供的一种LED灯珠,1.采用黄光芯片与蓝光芯片生成白光LED灯珠,芯片由两颗以上串联或并联,组合在同一灯珠内；2.采用黄光芯片LED灯珠与蓝光芯片激发荧光粉的白光LED灯珠合成白光LED灯,灯珠由两颗以上串联或并联在同一线路板上。本发明适合家用照明.摄像照明.屏幕背光等领域。(The embodiment of the invention provides an LED lamp bead, 1. a yellow light chip and a blue light chip are adopted to generate a white light LED lamp bead, and more than two chips are connected in series or in parallel and combined in the same lamp bead; 2. the white light LED lamp is synthesized by the yellow light chip LED lamp beads and the blue light chip white light LED lamp beads exciting fluorescent powder, and more than two lamp beads are connected in series or in parallel on the same circuit board. The invention is suitable for the fields of household illumination, camera illumination, screen backlight and the like.)

1. An LED lamp bead is characterized in that ① adopts a yellow light LED chip and a blue light LED chip to generate a white light LED lamp bead, and ② adopts the yellow light LED lamp bead and the blue light LED lamp bead to excite the white light LED lamp bead of fluorescent powder to synthesize the white light LED lamp.

2. The LED lamp bead according to claim 1, characterized in that the LED lamp bead is composed of a yellow chip and a blue chip.

3. The LED lamp bead according to claim 1, wherein more than two yellow LED chips and more than two blue LED chips are connected in series or in parallel and combined in the same lamp bead; more than two white light LED lamp beads of which the yellow light chip LED lamp beads and the blue light chip excite the fluorescent powder are connected in series or in parallel on the same circuit board.

4. The LED lamp bead of claim 1, wherein the yellow chip wavelength is 575nm-620nm, the blue chip wavelength is 425nm-500nm, and the color temperature of the white light-generating LED lamp bead is 2000K-7000K; the yellow light chip LED lamp bead wavelength is 575nm-620nm, the white light LED lamp bead color temperature of the blue light chip excited fluorescent powder is 2500K-15000K, and the synthesized white light LED lamp color temperature is 2000K-7000K.

Technical Field

The invention relates to an LED lamp, in particular to an LED lamp bead.

Background

At present, white light LED lamp beads on the market are formed by exciting yellow fluorescence by a blue light chip, however, the design has the defects of high blue spectrum and low color rendering index.

Disclosure of Invention

In order to solve the problems, the invention provides the LED lamp bead, and aims to provide the LED lamp bead with a reduced blue spectrum.

In order to achieve the purpose, the LED lamp bead adopts a yellow light chip and a blue light chip to generate a white light LED lamp bead.

In another aspect of the invention, a yellow light chip LED lamp bead and a white light LED lamp bead of blue light chip excited fluorescent powder can be adopted to synthesize the white light LED lamp.

The invention is beneficial to the control of the driving power supply because of simple structure. The principle of yellow-blue double primary colors is adopted, the LED lamp belongs to a low-blue LED lamp and is harmless to a retina; the color rendering index can reach Ra98, can be comparable to sunlight, and is the first choice for household illumination, screen backlight, camera illumination and the like.

Drawings

The present invention is described in further detail below with reference to the attached drawings.

FIG. 1 is a schematic structural diagram of an LED lamp bead of the present invention.

FIG. 2 is a schematic diagram of the combination of LED lamp beads of the present invention.

In the figure: 1-yellow light chip, 2-blue light chip, 3-yellow light chip LED lamp bead, 4-blue light chip excitation phosphor powder's white light LED lamp bead.

Detailed Description

As shown in fig. 1, the preferred embodiment of the present invention is that a yellow light chip 1 and a blue light chip 2 generate a white LED lamp bead.

As shown in fig. 2, another preferred mode of the present invention is to synthesize a yellow light chip LED lamp bead 3 and a white light LED lamp bead 4 with a blue light chip exciting phosphor into a white light LED lamp.

The working principle and the working process of the invention are as follows:

1. and a yellow light chip and a blue light chip are adopted to generate a white light LED lamp bead. More than two chips are connected in series or in parallel and combined in the same lamp bead, the wavelength of the yellow chip is 575nm-620nm, the wavelength of the blue chip is 425nm-500nm, and the color temperature of the generated white LED lamp bead is 2000K-7000K.

2. And synthesizing the white light LED lamp by adopting the yellow light chip LED lamp beads and the blue light chip to excite the white light LED lamp beads of the fluorescent powder. The lamp beads are formed by connecting more than two lamps in series or in parallel on the same circuit board, the wavelength of the yellow light chip LED lamp bead is 575nm-620nm, the color temperature of the white light LED lamp bead of the blue light chip excited fluorescent powder is 2500K-15000K, and the color temperature of the synthesized white light LED lamp is 2000K-7000K.