Plant growth lamp

Abstract

The invention discloses a plant growth lamp which comprises a lamp holder. The lamp holder is provided with a bowl-shaped lampshade. A light source capable of emitting blue light with the length ranging from 380 nm to 480 nm is arranged at the bowl bottom position of the lampshade. A transparent lampshade piece capable of covering a bowl opening is arranged on the bowl opening of the lampshade. The transparent lamp piece and the light source are arranged in a spaced mode. Red fluorescent powder capable of emitting out red light with the length ranging from 600 nm to 700 nm by being motivated by the blue light with the length ranging from 380 nm to 480 nm is arranged on the transparent lampshade piece. The transparent lampshade piece is detachably connected to the lampshade. According to the plant growth lamp, a user can adjust the optical performance of the plant growth lamp according to the different growth stages of plant, thermal quenching influences of the fluorescent powder are avoided, and the selectivity range of the fluorescent powder is enlarged.

Description

technical field [0001] The invention relates to a plant growth lamp. Background technique [0002] The growth of plants needs the sun. Since people have mastered the internal principle of plants' need for the sun, modern science can make plants grow better in places without the sun. The chlorophyll in the leaves achieves photosynthesis by mainly absorbing blue light (380nm-480nm) and red light (600nm-700nm) in the sun. People can also make plants complete photosynthesis through supplementary light technology or complete artificial light technology. [0003] At present, artificial light sources for plant cultivation mainly include fluorescent lamps and LED lamps. Fluorescent lamp plant growth light sources are generally coated with fluorescent powder that can emit specific band light sources (blue light and red light) required for plant growth. On the wall, the fluorescent powder is excited by ultraviolet rays to emit corresponding light waves; LED lamp plant growth light so...

AI Technical Summary

Problems solved by technology

The above products have one thing in common, that is, after the products leave the factory, the optical properties of the same model of products are fixed, that is to say, after the products are produced, the amount and ratio of blue light and red light emitted by them remain unchanged, while the plants in each The demand for light in the production stage is not the same. Therefore, in order to meet the needs of different growth stages of plants, farmers need to purchase different types of growth light sources, and the cost is high; moreover, the growth light source needs to be replaced as a whole, which is inconvenient. big, it's not economical

In addition, the phosphor powder (especially the red phosphor powder) of the fluorescent lamp plant growth light source in the traditional technology is too close to the excitation source, so it is necessary to choose a phosphor powder with good stability to prevent the thermal quenching effect, so that the red phosphor powder The selection is too narrow, and the optical performance of phosphors with high thermal quenching is not necessarily optimal, which also limits the optical performance of plant growth light source products

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