LED capable of removing harmful blue light and LED illumination apparatus

Abstract

The invention discloses an LED capable of removing harmful blue light and an LED illumination apparatus. According to a first scheme, the LED illumination apparatus comprises at least one low-color-temperature white light LED (8) and at least one LED (6) capable of removing harmful blue light, wherein the lights of the two LEDs are mixed to form white light at a color temperature of 3,000-5,000K; each LED (6) capable of removing harmful blue light comprises a blue light LED bare chip (1) and a lens (5), wherein a high-pass light filter (2) which is used for filtering short-wave blue light of less than 460nm is glued and fixed on the inner side wall or the outer side wall of the lens (5); according to a second scheme, the LED illumination apparatus comprises the at least one LED capable of removing harmful blue light, wherein each LED capable of removing harmful blue light comprises the blue light LED bare chip (1) and the lens (5); yellow fluorescent powder (3) covers the periphery of the blue light LED bare chip (1) in the lens (5) to enable the LED capable of removing harmful blue light to give out white light; and the high-pass light filter (2) which is used for filtering short-wave blue light of less than 460nm is glued and fixed on the inner side wall or the outer side wall of the lens (5). The LED and the LED illumination apparatus can be widely applied to the LED illumination field.

Description

technical field [0001] The invention relates to an LED for removing harmful blue light; in addition, the invention also relates to an LED lighting device. Background technique [0002] At present, the most common way for light-emitting diodes (that is, LEDs) to be used for lighting is to use the blue light emitted by the blue chip to excite the phosphor to emit yellow light and then mix it with the remaining blue light of the chip to form white light. Such a light-emitting mechanism has many advantages such as high light efficiency and environmental protection, but because the proportion of blue light is higher than that of traditional light sources, it also hides safety problems and causes blue light hazards. Relevant studies have shown that different wavelengths of blue light have different harmful effects on the human eye, especially short-wave blue light with a wavelength between 435 nm and 440 nm has the greatest harmful effect on the eyes, and this effect gradually dec...

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Problems solved by technology

[0003] In addition, in the case of high correlated color temperature (rich blue light), the environment with high brightness and long-term use is most likely to cause harm to human eyes; although white LEDs with low correlated color temperature (<2700K) have very low blue light radiation energy, blue light is harmful Small, but the correlated color temperature and color rendering index are too low for reading

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