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Sodium yellow light-imitated LED lamp bead and preparation method thereof
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A technology of LED lamp beads and yellow light, which is applied in the field of LED lighting, can solve the problems of LED lamps such as general fog penetration, and achieve good resolution, visual friendliness, and high penetrating characteristics.
Active Publication Date: 2019-04-16
WUYI UNIV
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[0007] Compared with high-pressure sodium lamps, LEDs have many advantages, such as higher color rendering index, better luminous efficiency, and longer life, but the fog penetration ability of LED lamps is average, while the fog penetration ability of high-pressure sodium lamps is extremely strong. It is suitable for cities in the north that are prone to smog weather, and LED lights have a lot of shortcomings in this respect
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Embodiment 1
[0041] An imitation sodium yellow LED lamp bead, the imitation sodium yellow LED lamp bead comprises phosphor powder, A glue, B glue, a chip and a bracket, and the phosphor powder includes the following components in parts by mass:
[0042] 0.24 part of yellow-green powder with emission wavelength of 545nm,
[0043]0.844 parts of yellow powder with emission wavelength of 580nm,
[0044] 0.065 part of orange-yellow powder with emission wavelength of 598nm.
[0046] The mass ratio of phosphor, A glue and B glue is 1.149:1.465:2.149.
[0047] The preparation method of the imitation sodium yellow LED lamp bead comprises the following steps:
[0048] 1) Put the phosphor, glue A and glue B into the beaker, and stir well for 10 to 25 minutes, so that the phosphor, glue A and glue B are evenly mixed together;
[0049] 2) Put the stirred fluorescent glue into the vacuum defoaming machine, carry out bubble extraction for 6-8 m...
Embodiment 2
[0054] An imitation sodium yellow LED lamp bead, the imitation sodium yellow LED lamp bead comprises phosphor powder, A glue, B glue, a chip and a bracket, and the phosphor powder includes the following components in parts by mass:
[0055] 0.154 parts of yellow-green powder with emission wavelength of 545nm,
[0056] 0.845 part of yellow powder with emission wavelength of 580nm,
[0057] 0.132 parts of orange-yellow powder with emission wavelength of 598nm.
[0059] The mass ratio of phosphor, A glue and B glue is 1.131:1.151:1.136.
[0060] The preparation method of the imitation sodium yellow LED lamp bead is the same as the preparation method of the imitation sodium yellow LED lamp bead in Example 1.
Embodiment 3
[0062] An imitation sodium yellow LED lamp bead, the imitation sodium yellow LED lamp bead comprises phosphor powder, A glue, B glue, a chip and a bracket, and the phosphor powder includes the following components in parts by mass:
[0063] 0.568 parts of green powder with emission wavelength of 520nm,
[0064] 1.008 parts of yellow powder with emission wavelength of 580nm,
[0065] 0.127 parts of orange-yellow powder with emission wavelength of 598nm.
[0067] The mass ratio of phosphor, A glue and B glue is 1.703:1.645:1.278.
[0068] The preparation method of the imitation sodium yellow LED lamp bead is the same as the preparation method of the imitation sodium yellow LED lamp bead in Example 1.
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Abstract
The invention discloses a sodium yellow light-imitated LED lamp bead. The sodium yellow light-imitated LED lamp bead comprises fluorescent powder, glue A, glue B, a chip and a bracket, wherein the fluorescent powder comprises the following components in parts by mass: 0-1 part of green powder with the emission wavelength being 515-525nm, 0-1 part of yellow green powder with the emission wavelengthbeing 540-550nm, 0.2-1.5 parts of yellow powder with the emission wavelength being 575-585nm, and 0-0.5 part of orange yellow powder with the emission wavelength being 590-610nm. The sodium yellow light-imitated LED lamp bead disclosed by the invention can be excited by ultraviolet light, and the color purity of the lamp bead can reach more than 95%; the lamp bead has high luminous efficiency, and the luminous efficiency is not less than 130lm / W; the lamp bead has the luminescence stability of a light source, and after one year of use, the light attenuation of the sodium yellow light-imitatedLED lamp bead is not less than 5%; the power is 0.5W-1.0W, so that the sodium yellow light-imitated LED lamp bead is suitable for the application of road lamps, tunnel lamps, square lamps and other lamps; and the sodium yellow light-imitated LED lamp bead has higher penetrability characteristics in rainy and foggy weather, and has better discrimination and visual friendliness for the driving of drivers.
Description
technical field [0001] The invention belongs to the technical field of LED lighting, and in particular relates to a high-penetration imitation sodium yellow LED lamp bead and a preparation method thereof. Background technique [0002] At present, there are three main types of LED light sources for lighting fixtures in the LED industry, especially street lamps. One is a cool white light source with a relatively high color temperature (above 6800K). Although the light efficiency of this LED light source is relatively high ( 160lm / W), but its color rendering is very poor, the highest Ra is only about 70; the second type is the color temperature of about 4500K-5500K, its color rendering Ra can reach about 80, and the light efficiency can reach 140lm / W; The third type is the warm white LED light source, the color temperature CCT is 2500K-3500K, the color rendering Ra can reach 85 or even 95, but the light efficiency is very low (mostly lower than 100lm / W). These three types of L...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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