Surface light source

Abstract

The invention discloses a surface light source, which comprises a base, a lampshade and a white luminous body arranged inside the lampshade. A yellow fluorescent film is arranged on the inner side of the lampshade. The yellow fluorescent film includes 0.1% by weight ~1.5% of yellow phosphor, 10%~20% of diffusion masterbatch and 78.5%~89.9% of transparent engineering plastic particles, the particle size of the yellow phosphor is ≤4um. The surface light source has low photobiological hazard value (low blue light radiation intensity, low retinal thermal hazard value), low glare value, and good visual comfort.

Description

technical field [0001] The present invention relates to a lighting device, more specifically, it relates to a surface light source. Background technique [0002] With the development of science and technology, the lighting fixtures used by people in daily life are mainly developed from incandescent lamps to three-color fluorescent lamps and LED lighting fixtures, among which: [0003] Incandescent lamp: Because incandescent lamps use metal tungsten filaments to energize and emit light, line light sources emit light, mainly yellow light (low color temperature), and its spectral combination is composed of red, green and blue components. When the luminous flux reaches a certain value, the light-emitting area of ​​the line light source is small, which will cause serious glare. [0004] Tri-primary fluorescent lamp: By exciting the mercury vapor of the lamp tube with high-voltage ultraviolet light from a 220v AC rectifier, the tri-primary phosphor powder (red, green, blue) coate...

AI Technical Summary

Problems solved by technology

When the luminous flux reaches a certain value, the light-emitting area of ​​the line light source is small, which will cause serious glare

[0004] Tri-primary fluorescent lamp: By exciting the mercury vapor of the lamp tube with high-voltage ultraviolet light from a 220v AC rectifier, the tri-primary phosphor powder (red, green, blue) coated on the inner wall of the lamp tube is excited to form a white light source, and its spectrum combination is red, green and blue. Composition of ingredients, but its light radiation is harmful, the glare is severe, the photobiological hazard is relatively large, and the blue light radiation is relatively high

[0006] Through the understanding of the light emitting principles of the above-mentioned incandescent lamps, tri-color fluorescent lamps, and LED lighting fixtures, there are obvious deficiencies such as glare and excessively high photobiological hazard values.

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