Phosphor powder for LED light source with insect repelling effect, LED light source and preparation method

Abstract

The invention discloses fluorescent powder used for an LED light source having insect repelling effect. The fluorescent powder used for the LED light source is a mixture of yellow and green fluorescent powder, amber fluorescent powder, and red fluorescent powder mixed according to a mass ratio of (15-25): (0.2-2): (1:3). The emission spectrum range of the fluorescent powder used for the LED light source is in a range from 490 to 850 nm under excitation of blue light having a wavelength in a range from 440 to 460 nm, and the main wavelength is in a range from 575 nm to 595 nm. The invention also discloses the LED light source having the insect repelling effect, and the LED light source comprises a substrate, a blue chip fixedly disposed at least one side of the substrate, and a fluorescent gel body disposed on the outer periphery of the blue light chip. The fluorescent gel body is the mixture of the fluorescent powder used for the LED light source and the silica gel mixed according to the mass ratio of (1-5): (3:7). The LED light source having the insect repelling effect is advantageous in that by adopting the optimized design of the fluorescent powder mixture, the light source having the mosquito repelling effect and the main optical wavelength in a range from 575 nm to 595 nm is acquired; the blue light spectrum is not provided, and therefore the oviposition of the insects is not facilitated, and the living environment of the insects are inhibited, and therefore the insect repelling is realized.

Description

technical field [0001] The invention belongs to the technical field of LED lighting, and in particular relates to a fluorescent powder for an LED light source with an insect repelling effect, an LED light source and a preparation method thereof. Background technique [0002] With the deterioration of the environment in recent years, there are more and more various pests, which seriously affect the normal growth of crops, and even cause the death of crops. The traditional method of killing pests in agriculture is mainly to use chemical pesticides. Long-term repeated use of chemical pesticides not only makes pests resistant to pesticides, but also seriously damages the ecological environment and causes serious harm to human health. [0003] Entomologists have found that mosquitoes, as well as many insects, moths and other insects, are particularly sensitive to and like certain lights, and are particularly disgusted by other lights (such as green light and red light). Currently...

AI Technical Summary

Problems solved by technology

However, the existing insect repellent lamps have a series of defects such as short life, low efficiency, poor light effect, single function, unstable performance, and poor insect repellent flexibility.

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