A vision-protecting panel light, panel light group and lighting method thereof

Abstract

The application discloses a vision protection panel lamp, a panel lamp set and a lighting method thereof. The panel lamp comprises a frame, a diffusion plate and a bottom plate. The diffusion plate is clamped in the frame, and the frame is buckled with the bottom plate. Meanwhile, an LED light source plate, an LED driving device and a female terminal wire are arranged between the diffusion plate and the bottom plate. The female terminal wire is connected with the positive and negative poles of the LED light source plate, and the female terminal wire is connected with the LED driving device. The full-color bionic light source is adopted as the lighting source. By adjusting the cooperation of the lighting color temperature value change and the brightness change, the switching from high brightness to low brightness or the switching from low brightness to high brightness is completed in a specific time during the color temperature gradual change process. The static light is changed into dynamic light, and the visual self-adaptation can be avoided. The bionic change brightness makes people unconsciously blink, and the eye axis is actively adjusted. The technical effects of protecting eyes, reducing eye fatigue, reducing or preventing myopia can be achieved.

Description

Technical Field

[0001] The present invention relates to the field of panel lamp structures, and in particular to a vision-protecting panel lamp, a panel lamp group and a lighting method thereof. Background Art

[0002] The panel light group has good illumination uniformity, soft light, and beautiful design. It can be embedded in the ceiling, wall and installation surface, and is widely used as an indoor lighting fixture.

[0003] The human eye was formed and evolved under natural light, and the adaptability of vision to natural light is irreplaceable. Figure 6 As shown, when viewing pure blue light, the eyes will unnaturally open wider, causing the blue light image to fall on the retina; when viewing pure red light, the eyes will unnaturally squint, causing the red light image to fall on the retina. Ordinary artificial lighting spectra lack red light and are excessively high in blue light. Prolonged eye use can not only damage the macula but also easily cause eye fatigue and myopia. Strengthening the red light spectrum and reducing the blue light spectrum in the lighting spectrum are crucial for reducing eye fatigue and preventing myopia.

[0004] In addition, when people read or write, they tend to "concentrate" or "stare intently" at the object being viewed. In this way, after looking for a long time, the eyes will be focused for a long time and the eyes will easily become tired, especially when the red light spectrum is missing in the luminous light color. Looking at the object for a long time can easily lead to the elongation of the eye axis and myopia.

[0005] Therefore, it is of great significance to develop a panel light, a panel light group and a lighting method thereof that are easy to install and can well realize an adjustable eye axis method in accordance with visual habits to protect the eyes, relieve eye fatigue, and reduce or prevent myopia. Summary of the Invention

[0006] The purpose of the present invention is to provide a vision-protecting panel lamp, a panel lamp group and a lighting method thereof, in view of the problem that the human eye is easily fatigued after long-term viewing when reading or writing, especially when the panel lamp light source lacks red light or the red light spectrum is weak, which easily leads to the elongation of the eye axis and the occurrence of myopia. The panel lamp provided by the present invention has a simple structure and is easy to install. At the same time, the lighting method of the panel lamp group provides independent dimming bionic visual control, which converts static light into dynamic light. The spectrum remains unchanged when the brightness changes and does not cause visual adaptation, so that the eyes blink and the eyeballs autonomously adjust the focus and reset, thereby realizing active adjustment of the eye axis in accordance with visual habits, and at the same time achieving the effect of protecting the eyes, reducing eye fatigue, and alleviating or preventing myopia.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A vision protection panel light includes a frame, a diffuser plate, and a chassis. The diffuser plate is clamped in the frame, and the frame is snap-connected to the chassis. At the same time, an LED light source board, an LED driver device, and a female terminal wire are arranged between the diffuser plate and the chassis. The female terminal wire is connected to the positive and negative poles of the LED light source board, and at the same time, the female terminal wire is connected to the LED driver device. The LED driver device can drive the LED light source board for lighting, and the light source of the LED light source board is a full-color bionic light source.

[0009] The present invention discloses a vision protection panel light, comprising a frame, a diffusion plate and a chassis, wherein the diffusion plate is clamped in the frame, and the frame is connected to the chassis by a snap; at the same time, an LED light source board, an LED driving device and a female terminal line are arranged between the diffusion plate and the chassis; the female terminal line is connected to the positive and negative poles of the LED light source board, and at the same time, the female terminal line is connected to the LED driving device; the LED driving device can drive the LED light source board for lighting, and the light source of the LED light source board is a full-color bionic light source. The lighting light source is a full-color bionic light source, and the spectrum of the lighting light source forms an existence mode of high-saturation red light and high-saturation cyan light. According to the imaging principle of color on the retina, the full-color bionic light source helps to adjust the visual focal length and eye axis during visual imaging, realizes visual imaging that restores the color of the object, ensures high adaptability and comfort of vision, effectively relieves eye fatigue under lighting, has a simple structure, and is easy to promote.

[0010] Furthermore, the LED light source panel includes a high color temperature light source group and a low color temperature light source group; the high color temperature light source group is composed of at least two high color temperature light source bars connected in series, in parallel, or in series and parallel, and the low color temperature light source group is composed of at least two low color temperature light source bars connected in series, in parallel, or in series and parallel; all the high color temperature light source bars and all the low color temperature light source bars are arranged at intervals, and the light source bars adjacent to the high color temperature light source bars are the low color temperature light source bars, and the light source bars adjacent to the low color temperature light source bars are the high color temperature light source bars; the high color temperature light source bars and the low color temperature light source bars are both full-color bionic light sources;

[0011] The LED driving device can drive the low color temperature light source group and the high color temperature light source group respectively, adjust the magnitude of the current I1 of the low color temperature light source group and the magnitude of the current I2 of the high color temperature light source group to achieve the change of the lighting brightness; and adjust the current ratio passing through the low color temperature light source group and the high color temperature light source group to achieve the change of the lighting color temperature value.

[0012] The study found that the eye-protection lighting effect can be achieved through the staggered arrangement of high color temperature light source strips and low color temperature light source strips. The eye-protection lighting effect is significantly reduced when all high color temperature light source strips are arranged in parallel, all low color temperature light source strips are arranged in parallel, or when more than two light source strips of the same color temperature are arranged at intervals.

[0013] The present invention divides the light sources of the LED light source panel into a high color temperature light source group and a low color temperature light source group. The high color temperature light source group is composed of high color temperature light source bars, and the low color temperature light source group is composed of low color temperature light source bars. The arrangement of the high color temperature light source bars and the low color temperature light source bars is adjusted in a targeted manner. By adjusting the ratio of the currents passing through the low color temperature light source group and the high color temperature light source group, the change in the lighting color temperature value can be adjusted. By simultaneously adjusting the magnitude of the current I1 of the low color temperature light source group and the magnitude of the current I2 of the high color temperature light source group, the change in the lighting brightness can be adjusted. By adjusting the coordination of the change in the lighting color temperature value and the change in the brightness, the human eye can be caused to blink passively involuntarily, and the eyeball can focus and reset autonomously, so as to actively adjust the eye axis and prevent the eye axis from elongating.

[0014] Panel lights can be used as independent light sources and can be used for indoor lighting in offices, school classrooms, factory workshops, commercial office buildings, etc. Generally, several panel lights are connected in series or in parallel.

[0015] Generally, several panel lights are connected in series or in parallel.

[0016] Furthermore, in the spectrum of the full-color bionic light source, the approximation of the light source radiation power distribution curve to the natural light of the same color temperature reaches 95%±5%, which means that in any same wavelength band of the spectrum of the full-color bionic light source and the spectrum of natural light of the same color temperature, the ratio of the smaller absolute light power to the larger absolute light power is 95%±5%.

[0017] Preferably, in the spectrum of the full-color bionic light source, the approximation of the light source radiation power distribution curve to natural light of the same color temperature is Ai / Bi; where Ai refers to the radiation amount of the full-color bionic light source at 1 nm, and Bi is the radiation amount of the natural light spectrum of the same color temperature at 1 nm; Ai / Bi = 90% to 100%, where 380nm≤i≤700nm. More preferably, when 380nm≤i≤480nm, Ai / Bi is 90% to 95%; when 480nm≤i≤600nm, Ai / Bi is 95% to 100%; and when 600nm≤i≤700nm, Ai / Bi is 90% to 100%.

[0018] Preferably, when the color temperature of the full-color bionic light source is 2700K-3000K, in the spectrum of the full-color bionic light source, the absolute optical power value of violet light from 380 to 435nm is less than 0.35; the absolute optical power value of blue light from 435 to 475nm is greater than 0.40; the absolute optical power value of cyan light from 475 to 492nm is greater than 0.45; the absolute optical power value of green light from 492 to 577nm is greater than 0.50; the absolute optical power value of yellow light from 577 to 597nm is greater than 0.75; the absolute optical power value of orange light from 597 to 622nm is greater than 0.80; and the absolute optical power value of red light from 622 to 700nm is greater than 0.80.

[0019] Preferably, when the color temperature of the full-color bionic light source is 4000K-4200K, in the spectrum of the full-color bionic light source, the absolute optical power value of violet light from 380 to 435nm is less than 0.40; the absolute optical power value of blue light from 435 to 475nm is less than 0.65; the absolute optical power value of cyan light from 475 to 492nm is greater than 0.60; the absolute optical power value of green light from 492 to 577nm is greater than 0.65; the absolute optical power value of yellow light from 577 to 597nm is greater than 0.80; the absolute optical power value of orange light from 597 to 622nm is greater than 0.8; and the absolute optical power value of red light from 622 to 700nm is greater than 0.80.

[0020] Preferably, when the color temperature of the full-color bionic light source is 5500K-6000K, in the spectrum of the full-color bionic light source, the absolute optical power value of violet light from 380 to 435nm is less than 0.45; the absolute optical power value of blue light from 435 to 475nm is less than 0.80; the absolute optical power value of cyan light from 475 to 492nm is greater than 0.70; the absolute optical power value of green light from 492 to 577nm is greater than 0.80; the absolute optical power value of yellow light from 577 to 597nm is greater than 0.80; the absolute optical power value of orange light from 597 to 622nm is greater than 0.80; and the absolute optical power value of red light from 622 to 700nm is greater than 0.70.

[0021] Among them, spectral power: the spectrum emitted by a light source is often not a single wavelength, but is composed of mixed radiation of many different wavelengths. The spectral radiation of a light source is distributed in order of wavelengths and the intensity of each wavelength is called the spectral power distribution of the light source. The parameters used to characterize the size of the spectral power are divided into absolute spectral power and relative spectral power. The absolute spectral power distribution curve is a curve drawn with the absolute value of the light energy of various wavelengths of spectral radiation. The relative spectral power distribution curve refers to the spectral power distribution curve that compares the energy of various wavelengths of the light source's radiation spectrum with each other and normalizes it so that the radiation power only varies within a specified range. The relative spectral power of the radiation with the largest power is 1, and the relative spectral powers of other wavelengths are all less than 1.

[0022] Furthermore, the bottom surface of the LED light source board is coated with a graphene adhesive layer, which is used to fix the LED light source board to the chassis. The chassis is provided with a number of spaced air holes. At the same time, the LED driver is fixed to the chassis. When the temperature of the light source board is too high, the heat passes through the graphene coating and then through the holes in the hardware chassis to the outside. During use, compared with the assembly method and heat dissipation mode of conventional panel lights, this product can achieve the characteristics of convenient installation, high efficiency, high heat dissipation performance of the light source board, and fast speed. It greatly improves the service life of the lamp beads and reduces light decay, meeting the long-term lighting needs of customers.

[0023] Furthermore, the high color temperature light source bar includes a plurality of high color temperature lamp beads arranged at intervals; the low color temperature light source bar includes a plurality of low color temperature lamp beads arranged at intervals.

[0024] Furthermore, the frame is a structural member made of plastic material.

[0025] Furthermore, the diffusion plate is a PS diffusion plate.

[0026] Furthermore, the chassis is a metal structural component.

[0027] Furthermore, the color temperature of the low color temperature light source group and the color temperature of the high color temperature light source group are two different color temperature values ​​between 2700K and 5600K. Preferably, the color temperature of the low color temperature light source group and the color temperature of the high color temperature light source group are any two color temperature values ​​in the intervals of 2700K to 3000K, 4000K to 4200K, 4700K to 5200K, and 5500K to 6000K, respectively. Preferably, the color temperature of the low color temperature light source group is any color temperature value between 2700K and 3000K, and the color temperature of the high color temperature light source group is any color temperature value between 5500K and 6000K.

[0028] Another object of the present invention is to provide a panel light assembly.

[0029] A panel light set comprises at least two of the above-mentioned vision protection panel lights connected in series, in parallel or in series-parallel.

[0030] The panel light group provided in this application has a simple structure and is easy to install. It adopts a full-spectrum light source. Under the illumination of an excellent light source, it simulates ecological changes in brightness to achieve the "resettlement" of the human eye's active adjustment of the eye axis function, making people blink unconsciously and actively adjust the eye axis to suit visual habits, thereby achieving the effect of protecting the eyes, reducing eye fatigue, and alleviating or preventing myopia.

[0031] Furthermore, in the panel light group, the power of all the vision protection panel lights is equal.

[0032] Furthermore, in the panel light group, all the eyesight protection panel lights are arranged in rows and columns, wherein all the eyesight protection panel lights in each row are connected to the same driver for control.

[0033] Another object of the present invention is to provide a lighting method for the above panel light assembly.

[0034] A lighting method for the above-mentioned panel light group, wherein the lighting light source is at least one of the eyesight protection panel lights in the panel light group; comprises the following steps:

[0035] Step 1: The lighting source gradually changes from the highest color temperature value to the lowest color temperature value. During the color temperature gradient process, the lighting maintains a brightness value of 100%, and the color temperature gradient duration is 8s to 16s. Then, while maintaining the lowest color temperature value, the lighting brightness value decreases from 100% brightness value to 25% to 45% brightness value within 0.8s to 1.5s, and the lighting is maintained for 3s to 5s. After that, the brightness value increases to 100% brightness value within 0.8s to 1.5s.

[0036] Step 2: The lighting source gradually changes from the lowest color temperature value to the highest color temperature value. During the gradual change, the lighting maintains a brightness value of 100%, and the color temperature gradual change time is 8s to 16s. Then, the highest color temperature value is maintained unchanged, and the lighting brightness decreases from 100% brightness value to 25% to 45% brightness value within 0.8s to 1.5s, and the lighting is maintained for 3s to 5s. The brightness value then rises to 100% brightness value within 0.8s to 1.5s.

[0037] Step 3: Repeat steps 1 to 2 to perform cyclic lighting; wherein in step 1, the total lighting time is 14s to 22s, and in step 2, the total lighting time is 14s to 22s.

[0038] The present invention discloses a lighting method for a panel light group, wherein the lighting light source is at least one of the vision protection panel lights in the panel light group, and the light source of the panel light is a full-color bionic light source. The lighting method includes the following steps: Step 1, the lighting light source gradually changes from a maximum color temperature value to a minimum color temperature value. During the color temperature gradient process, the lighting maintains a 100% brightness value unchanged, and the color temperature gradient duration is 8s to 16s; then, the minimum color temperature value is maintained unchanged, and the lighting brightness value decreases from 100% brightness value to 25% to 45% brightness value within 0.8s to 1.5s, and the lighting is maintained for 3s to 5s; then, the brightness value increases to 100% brightness value within 0.8s to 1.5s; Step 2, the lighting light source gradually changes from a maximum color temperature value to a minimum color temperature value, and the color temperature gradient process maintains a 100% brightness value unchanged, and the color temperature gradient duration is 8s to 16s; then, the minimum color temperature value is maintained unchanged, and the lighting brightness value decreases from 100% brightness value to 25% to 45% brightness value within 0.8s to 1.5s, and the lighting is maintained for 3s to 5s; then, the brightness value increases to 100% brightness value within 0.8s to 1.5s; Step 3, the lighting method includes the following steps: Step 2: The lighting light source gradually changes from the lowest color temperature value to the highest color temperature value. During the gradual change, the lighting maintains a brightness value of 100%, and the color temperature gradient time is 8s to 16s; then the highest color temperature value is maintained unchanged, and the lighting brightness decreases from 100% brightness value to 25% to 45% brightness value within 0.8s to 1.5s, and the lighting is maintained for 3s to 5s; thereafter, the brightness value rises to 100% brightness value within 0.8s to 1.5s; Step 3: Repeat the steps of step 1 to step 2 for cyclic lighting; wherein in step 1, the total lighting time is 14s to 22s, and in step 2, the total lighting time is 14s to 22s. During the entire lighting process, by adjusting the coordination of lighting color temperature changes and brightness changes, in the process of color temperature gradient, the switching from high brightness to low brightness and from low brightness to high brightness is completed within a specific time, turning static light into dynamic light, and at the same time avoiding visual adaptation. By targeted adjustment of the lighting source and the simultaneous changes in light source brightness and color temperature during the lighting process, under excellent light source illumination, the ecological change in brightness is simulated to achieve "resetting" the human eye's active eye axis adjustment function, making people blink unconsciously, and actively adjusting the eye axis in accordance with visual habits, thereby achieving the effect of protecting the eyes, reducing eye fatigue, and alleviating or preventing myopia.

[0039] Furthermore, in step 1, the time for the illumination light source to gradually change from the highest color temperature value to the lowest color temperature value is 9s to 16s, for example, 9s; 10s; 11s; 12s; 13s; 14s; 15s; 16s.

[0040] Furthermore, in step 2, the time for the illumination light source to gradually change from the lowest color temperature value to the highest color temperature value is 9s to 16s, for example, 9s; 10s; 11s; 12s; 13s; 14s; 15s; 16s.

[0041] Further, in the step 1, the illumination brightness is reduced from 100% brightness value to 25%-45% brightness value within 0.8s-1.2s, and the illumination is maintained for 3.5s-5s. Research shows that the time of reducing high brightness value to low brightness value and the illumination time of low brightness value are key factors to realize involuntary blinking and active adjustment of eye axis, and under the synergistic effect of the reasonable selection range of low brightness value, the comfort of using eyes can be effectively improved, eye fatigue can be relieved, eyes can be protected, and the effect of reducing or preventing myopia can be achieved. Among them, too fast adjustment of high brightness value to low brightness value will produce adaptive effect on human eyes, and the eye axis cannot be adjusted in time because the length of visual adaptation time or the adaptive conditioned reflex of vision to the outside world will change or switch under the change or switching of light and dark, the eye axis cannot be actively adjusted, it is difficult to relieve eye fatigue and achieve the effect of reducing or preventing myopia. However, too slow adjustment of high brightness value to low brightness value cannot achieve the effect of static light to dynamic light, the effect of relieving eye fatigue will be significantly worse, and good eye protection effect cannot be achieved. In the step 1, the time of reducing high brightness value to low brightness value can be 0.8s, 0.9s, 1s, 1.1s, 1.2s. In the step 1, the illumination time of low brightness value can be 3.5s, 4s, 4.5s, 5s.

[0042] Further, in the step 2, the illumination brightness is reduced from 100% brightness value to 25%-45% brightness value within 0.8s-1.2s, and the illumination is maintained for 3.5s-5s. Research shows that the time of reducing high brightness value to low brightness value and the illumination time of low brightness value are key factors to realize involuntary blinking and active adjustment of eye axis, and under the synergistic effect of the reasonable selection range of low brightness value, the comfort of using eyes can be effectively improved, eye fatigue can be relieved, eyes can be protected, and the effect of reducing or preventing myopia can be achieved. Among them, too fast adjustment of high brightness value to low brightness value will produce adaptive effect on human eyes, and the eye axis cannot be adjusted in time because the length of visual adaptation time or the adaptive conditioned reflex of vision to the outside world will change or switch under the change or switching of light and dark, the eye axis cannot be actively adjusted, it is difficult to relieve eye fatigue and achieve the effect of reducing or preventing myopia. However, too slow adjustment of high brightness value to low brightness value cannot achieve the effect of static light to dynamic light, the effect of relieving eye fatigue will be significantly worse, and good eye protection effect cannot be achieved. In the step 2, the time of reducing high brightness value to low brightness value can be 0.8s, 0.9s, 1s, 1.1s, 1.2s. In the step 2, the illumination time of low brightness value can be 3.5s, 4s, 4.5s, 5s.

[0043] Further, in the step 1, the luminance value is raised to 100% luminance value within 0.8s-1.2s. Research has found that the time of low luminance value to high luminance value and the lighting time of high luminance value are the key factors to achieve involuntary blinking and active adjustment of eye axis, which can effectively improve the comfort of eye use, relieve eye fatigue, protect eyes and achieve the necessary conditions for reducing or preventing myopia. Among them, the low luminance value is too fast to be adjusted to high luminance value, which will have an adaptive effect on the human eye. The human eye cannot adjust the eye axis in time because the length of time of visual adaptation or the adaptive conditioned reflex of vision to the outside world will change or switch between light and dark, which will not change the eye axis, cannot achieve active adjustment of the eye axis, and is difficult to achieve the effect of relieving eye fatigue and reducing or preventing myopia. However, the low luminance value is too slow to be adjusted to high luminance value, which cannot achieve the effect of static light to dynamic light, and the effect of relieving eye fatigue will be significantly worse, and cannot achieve good eye protection efficacy. For example, the time of low luminance value to high luminance value in the step 1 can be 0.8s; 0.9s; 1s; 1.1s; 1.2s.

[0044] Further, in the step 2, the luminance value is raised to 100% luminance value within 0.8s-1.2s. Research has found that the time of low luminance value to high luminance value and the lighting time of high luminance value are the key factors to achieve involuntary blinking and active adjustment of eye axis, which can effectively improve the comfort of eye use, relieve eye fatigue, protect eyes and achieve the necessary conditions for reducing or preventing myopia. Among them, the low luminance value is too fast to be adjusted to high luminance value, which will have an adaptive effect on the human eye. The human eye cannot adjust the eye axis in time because the length of time of visual adaptation or the adaptive conditioned reflex of vision to the outside world will change or switch between light and dark, which will not change the eye axis, cannot achieve active adjustment of the eye axis, and is difficult to achieve the effect of relieving eye fatigue and reducing or preventing myopia. However, the low luminance value is too slow to be adjusted to high luminance value, which cannot achieve the effect of static light to dynamic light, and the effect of relieving eye fatigue will be significantly worse, and cannot achieve good eye protection efficacy. For example, the time of low luminance value to high luminance value in the step 2 can be 0.8s; 0.9s; 1s; 1.1s; 1.2s. Further, in the step 1, the total luminance value change time is 14s-20s, and in the step 2, the total luminance value change time is 14s-20s. Research has found that even if the switching time in the luminance conversion process is met, the total time in the entire luminance adjustment process is a key factor affecting eye protection effect. The time in the entire luminance adjustment process should not be too long or too short, otherwise the eye comfort will be significantly reduced, and the reduction or prevention of myopia will be poor. For example, the total lighting time is 14s; 15s; 16s; 17s; 18s; 19s; 20s.

[0045] Furthermore, the brightness value at 100% is no less than 600 Lux, and the brightness value between 25% and 45% is no greater than 400 Lux. Choosing the right brightness can increase user comfort and relieve eye fatigue. Preferably, the brightness value at 100% is no less than 800 Lux, and the brightness value between 25% and 45% is no greater than 300 Lux. More preferably, the brightness value at 100% is no less than 800 Lux, and the brightness value between 25% and 45% is between 150 and 300 Lux.

[0046] Furthermore, the highest color temperature value is ≤ the color temperature value of the high color temperature light source group, and the lowest color temperature value is ≥ the color temperature value of the low color temperature light source group.

[0047] Furthermore, the difference between the highest color temperature value and the lowest color temperature value is ≥ 1200 K. When the difference between the highest color temperature value and the lowest color temperature value is large, the comfort of the human eye can be effectively ensured during the lighting process, eye fatigue can be relieved, and myopia can be reduced or prevented.

[0048] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0049] 1. The present invention discloses a vision protection panel light, comprising a frame, a diffusion plate and a chassis, wherein the diffusion plate is clamped in the frame, and the frame is connected to the chassis by a snap; at the same time, an LED light source board, an LED driving device and a female terminal line are arranged between the diffusion plate and the chassis; the female terminal line is connected to the positive and negative poles of the LED light source board, and at the same time, the female terminal line is connected to the LED driving device; the LED driving device can drive the LED light source board for lighting, and the light source of the LED light source board is a full-color bionic light source. The lighting light source is a full-color bionic light source, and the spectrum of the lighting light source forms an existence mode of high-saturation red light and high-saturation cyan light. According to the imaging principle of color on the retina, the full-color bionic light source helps to adjust the visual focal length and eye axis during visual imaging, realizes visual imaging that restores the color of the object, ensures high adaptability and comfort of vision, effectively relieves eye fatigue under lighting, has a simple structure, and is easy to promote.

[0050] 2. The present invention divides the light sources of the LED light source panel into a high color temperature light source group and a low color temperature light source group. The high color temperature light source group is composed of high color temperature light source bars, and the low color temperature light source group is composed of low color temperature light source bars. The arrangement of the high color temperature light source bars and the low color temperature light source bars is adjusted in a targeted manner. By adjusting the current ratio passing through the low color temperature light source group and the high color temperature light source group, the change of the lighting color temperature value can be adjusted; by simultaneously adjusting the magnitude of the current I1 of the low color temperature light source group and the magnitude of the current I2 of the high color temperature light source group, the change of the lighting brightness can be adjusted; by adjusting the coordination of the change of the lighting color temperature value and the change of the brightness, the human eye can be caused to blink passively involuntarily, and the eyeball can focus and reset autonomously, so as to actively adjust the eye axis and prevent the eye axis from becoming elongated.

[0051] 3. The panel light group can be used as an independent light source and can be applied to indoor lighting in offices, school classrooms, factory workshops, commercial office buildings, etc. The panel light group provided in this application has a simple structure and is easy to install. It uses a full-spectrum light source. Under the illumination of an excellent light source, it simulates ecological changes in brightness to achieve the "reset" of the human eye's active adjustment of the eye axis function, making people blink unconsciously, and actively adjust the eye axis in accordance with visual habits, thereby achieving the effect of protecting the eyes, reducing eye fatigue, and reducing or preventing myopia.

[0052] 4. The lighting method of the panel light group disclosed in the present invention, wherein the lighting light source is at least one of the panel lights in the panel light group, and the light source of the panel light is a full-color bionic light source. The lighting method provided includes the following steps: Step 1, the lighting light source gradually changes from the highest color temperature value to the lowest color temperature value. During the color temperature gradient process, the lighting maintains a 100% brightness value unchanged, and the color temperature gradient duration is 8s to 16s; then, the lowest color temperature value is maintained unchanged, and the lighting brightness value decreases from 100% brightness value to 25% to 45% brightness value within 0.8s to 1.5s, and the lighting is maintained for 3s to 5s; then the brightness value increases to 100% brightness value within 0.8s to 1.5s; Step 2, the lighting light source gradually changes from the highest color temperature value to the lowest color temperature value, and the color temperature gradient duration is 8s to 16s; then, the lowest color temperature value is maintained unchanged, and the lighting brightness value decreases from 100% brightness value to 25% to 45% brightness value within 0.8s to 1.5s, and the lighting is maintained for 3s to 5s; then, the brightness value increases to 100% brightness value within 0.8s to 1.5s; Step 3. 2. The lighting light source gradually changes from the lowest color temperature value to the highest color temperature value. During the gradual change process, the lighting maintains a brightness value of 100%, and the color temperature gradient time is 8s to 16s; then the highest color temperature value is maintained unchanged, and the lighting brightness decreases from 100% brightness value to 25% to 45% brightness value within 0.8s to 1.5s, and the lighting is maintained for 3s to 5s; thereafter, the brightness value rises to 100% brightness value within 0.8s to 1.5s; step 3, repeating the steps 1 to 2 for cyclic lighting; wherein in step 1, the total lighting time is 14s to 22s, and in step 2, the total lighting time is 14s to 22s. During the entire lighting process, by adjusting the coordination of lighting color temperature changes and brightness changes, in the process of color temperature gradient, the switching from high brightness to low brightness and from low brightness to high brightness is completed within a specific time, turning static light into dynamic light, and at the same time avoiding visual adaptation. By targeted adjustment of the lighting source and the simultaneous changes in light source brightness and color temperature during the lighting process, under excellent light source illumination, the ecological change in brightness is simulated to achieve "resetting" the human eye's active eye axis adjustment function, making people blink unconsciously, and actively adjusting the eye axis in accordance with visual habits, thereby achieving the effect of protecting the eyes, reducing eye fatigue, and alleviating or preventing myopia. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a schematic diagram of the exploded structure of the panel light in Example 2.

[0054] Figure 2 This is a schematic diagram of the structure of the panel light of Example 2.

[0055] Figure 3 After removing the diffuser Figure 2 Schematic diagram of the structure.

[0056] Figure 4 for Figure 3 Schematic diagram of the front view structure.

[0057] Figure 5 This is a schematic diagram of the panel light group of Example 2.

[0058] Figure 6Schematic diagram of the structure where different colors of light fall on the retina.

[0059] Figure 7 This is a spectrum diagram of the low color temperature light source group in Example 2.

[0060] Figure 8 This is a spectrum diagram of the high color temperature light source group in Example 2.

[0061] Figure 9 This is a spectrum diagram of the low color temperature light source group in Example 3.

[0062] Figure 10 This is a spectrum diagram of the high color temperature light source group in Example 3.

[0063] Figure 11 This is a spectrum diagram of the high color temperature light source group in Example 4.

[0064] Figure 12 The chromatogram of the light source of Comparative Example 2 (top) and the spectrum of the low color temperature light source group in Example 4 (bottom).

[0065] Figure markings: 1-frame; 2-diffuser plate; 3-chassis; 31-ventilation hole; 4-LED light source board; 41-high color temperature light source bar; 42-low color temperature light source bar; 5-LED driving device; 6-female terminal wire; 7-panel light group. DETAILED DESCRIPTION

[0066] The present invention will be described in detail below with reference to the accompanying drawings.

[0067] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0068] Example 1

[0069] Panel lights can be used as independent light sources and can be used for indoor lighting in offices, school classrooms, factory workshops, commercial office buildings, etc. Generally, several panel lights are connected in series or in parallel.

[0070] A vision protection panel light includes a frame 1, a diffuser plate 2 and a chassis 3. The diffuser plate 2 is clamped in the frame 1, and the frame 1 is snap-connected to the chassis 3. At the same time, an LED light source board 4, an LED driver 5 and a female terminal wire 6 are arranged between the diffuser plate 2 and the chassis 3. The female terminal wire 6 is connected to the positive and negative poles of the LED light source board 4, and at the same time, the female terminal wire 6 is connected to the LED driver 5. The LED driver 5 can drive the LED light source board 4 for lighting, and the light source of the LED light source board 4 is a full-color bionic light source.

[0071] The lighting source is a full-color bionic light source, and the spectrum of this lighting source forms an existence pattern of highly saturated red light and highly saturated cyan light. According to the principle of color imaging on the retina, this full-color bionic light source helps to adjust the visual focal length and eye axis during visual imaging, realize visual imaging of objects with restored colors, ensure high visual adaptability and comfort, effectively relieve eye fatigue under lighting, have a simple structure, and are easy to promote.

[0072] Example 2

[0073] like Figures 1-4 As shown, a panel light includes a frame 1, a diffuser plate 2 and a chassis 3. The frame 1 is a structural component made of plastic, the diffuser plate 2 is a PS diffuser plate, and the chassis 3 is a structural component made of metal.

[0074] The diffusion plate 2 is clamped in the frame 1, and the frame 1 is snap-connected to the chassis 3; at the same time, an LED light source board 4, an LED driving device 5 and a female terminal line 6 are arranged between the diffusion plate 2 and the chassis 3; the female terminal line 6 is connected to the positive and negative poles of the LED light source board 4, and at the same time, the female terminal line 6 is connected to the LED driving device 5; the LED light source board 4 includes a high color temperature light source group and a low color temperature light source group; the high color temperature light source group is composed of three high color temperature light source strips 41 connected in series, in parallel or in series and parallel, and the low color temperature light source group is composed of three low color temperature light source strips 42 connected in series, in parallel or in series and parallel; all the high color temperature light source strips 41 and all The low color temperature light source strips 42 are arranged at intervals, and the light source strip adjacent to the high color temperature light source strip 41 is the low color temperature light source strip 42, and the light source strip adjacent to the low color temperature light source strip 42 is the high color temperature light source strip 41; the high color temperature light source strip 41 and the low color temperature light source strip 42 are both full-color bionic light sources; the LED driving device can drive the low color temperature light source group and the high color temperature light source group respectively, adjust the magnitude of the low color temperature light source group current I1 and the magnitude of the high color temperature light source group current I2 to achieve the change of the lighting brightness; adjust the current ratio of the low color temperature light source group and the high color temperature light source group to achieve the change of the lighting color temperature value.

[0075] Preferably, the bottom surface of the LED light source board 4 is coated with a graphene adhesive layer, and the graphene adhesive layer is used to fix the LED light source board 4 on the chassis 3. The chassis 3 is provided with a plurality of spaced air holes 31; at the same time, the LED driver 5 is fixed on the chassis 3. When the temperature of the light source board is too high, the heat passes through the graphene coating and then through the holes of the hardware chassis to the outside. During use, compared with the assembly method and heat dissipation mode of conventional panel lights, this product can achieve the characteristics of convenient installation, high efficiency, high heat dissipation performance of the light source board, and fast speed, greatly improving the service life of the lamp beads and reducing light decay, meeting the long-term lighting needs of customers.

[0076] like Figure 1 As shown, the high color temperature light source bar 41 includes 8 high color temperature lamp beads arranged at intervals; the low color temperature light source bar 42 includes 8 low color temperature lamp beads arranged at intervals.

[0077] Specifically, a single low-color temperature lamp bead has a color temperature of 2700K. The phosphor layer of the full-color bionic white LED light source includes a first film layer, a second film layer, and a third film layer stacked in sequence. The first film layer includes a first phosphor and a film-forming material, silicone; the second film layer includes a second phosphor and a film-forming material, silicone; and the third film layer includes a third phosphor and a film-forming material, silicone. The mass ratio of the first, second, and third phosphors is 20:40:35.

[0078] The first phosphor includes phosphor A2, which is Y3(Al, Ga)5O with a luminous wavelength of 490 nm. 12 .

[0079] The second phosphor includes phosphor B1 and phosphor B2. Phosphor B1 is BaSi2O2N2 with a light emission wavelength of 525 nm, and phosphor B2 is BaSi2O2N2 with a light emission wavelength of 540 nm. The mass ratio of phosphor B1 to phosphor B2 is 55:50.

[0080] The third phosphor includes phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E, and phosphor F. Phosphor C1 is (Ca, Sr)AlSiN3 with an emission wavelength of 630 nm, phosphor C2 is (Ca, Sr)AlSiN3 with an emission wavelength of 660 nm, phosphor C3 is (Ca, Sr)AlSiN3 with an emission wavelength of 679 nm, phosphor D is (Ca, Sr)AlSiN3 with an emission wavelength of 720 nm, phosphor E is (Ca, Sr)AlSiN3 with an emission wavelength of 740 nm, and phosphor F is (Ca, Sr)AlSiN3 with an emission wavelength of 795 nm. The mass ratio of phosphors C1, C2, C3, D, E, and F is 9:13:16:21:23:27.

[0081] Meanwhile, the film forming method is a lamination method. The first film layer has a thickness of 0.13 mm and a first phosphor concentration of 61%, the second film layer has a thickness of 0.13 mm and a second phosphor concentration of 61%, and the third film layer has a thickness of 0.13 mm and a third phosphor concentration of 61%.

[0082] The spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1 to R15 are all greater than 90.

[0083] Specific examples Figure 7 As shown. The absolute optical power value of violet light from 380 to 435 nm is 0.15; the absolute optical power value of blue light from 435 to 475 nm is 0.42; the absolute optical power value of cyan light from 475 to 492 nm is 0.48; the absolute optical power value of green light from 492 to 577 nm is 0.52; the absolute optical power value of yellow light from 577 to 597 nm is 0.78; the absolute optical power value of orange light from 597 to 622 nm is 0.85; and the absolute optical power value of red light from 622 to 700 nm is 0.84. The light source spectrum of the low color temperature light source group is a full-color bionic spectrum, and the approximation between the full-color bionic spectrum and the natural light spectrum with the same color temperature is Ai / Bi; where Ai refers to the radiation of the full-color bionic light source at 1 nm, and Bi is the radiation of the natural light spectrum with the same color temperature at 1 nm; when 380nm≤i≤480nm, Ai / Bi is 90%; when 480nm≤i≤600nm, Ai / Bi is 95%; when 600nm≤i≤700nm, Ai / Bi is 90%.

[0084] Specifically, a single high-color temperature lamp bead has a color temperature of 5600K. The phosphor layer of the full-color bionic white LED light source includes a first film layer, a second film layer, and a third film layer stacked in sequence. The first film layer includes a first phosphor and a film-forming material, silicone; the second film layer includes a second phosphor and a film-forming material, silicone; and the third film layer includes a third phosphor and a film-forming material, silicone. The mass ratio of the first, second, and third phosphors is 15:50:15.

[0085] The first phosphor includes phosphor A2, which is Y3(Al, Ga)5O with a luminous wavelength of 490 nm. 12 .

[0086] The second phosphor includes phosphor B1 and phosphor B2. Phosphor B1 is BaSi2O2N2 with a light emission wavelength of 525 nm, and phosphor B2 is BaSi2O2N2 with a light emission wavelength of 540 nm. The mass ratio of phosphor B1 to phosphor B2 is 20:26.

[0087] The third phosphor powder comprises phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E and phosphor F. The phosphor C1 is (Ca, Sr) AlSiN3 with a light-emitting wavelength of 630 nm, the phosphor C2 is (Ca, Sr) AlSiN3 with a light-emitting wavelength of 660 nm, the phosphor C3 is (Ca, Sr) AlSiN3 with a light-emitting wavelength of 679 nm, the phosphor D is (Ca, Sr) AlSiN3 with a light-emitting wavelength of 720 nm, the phosphor E is (Ca, Sr) AlSiN3 with a light-emitting wavelength of 740 nm, and the phosphor F is (Ca, Sr) AlSiN3 with a light-emitting wavelength of 795 nm. The mass ratio of the phosphor C1, the phosphor C2, the phosphor C3, the phosphor D, the phosphor E and the phosphor F is 6:7:11:13:16:17.

[0088] Meanwhile, the film forming method is a pressing method, the film thickness of the first film layer is 0.11 mm and the first phosphor concentration is 67%, the film thickness of the second film layer is 0.11 mm and the second phosphor concentration is 67%, and the film thickness of the third film layer is 0.11 mm and the third phosphor concentration is 67%.

[0089] The spectrum of the full-color biomimetic light source is a spectrum in which the approximation degree of the light source radiant power distribution curve to the natural light spectrum of the same color temperature reaches 95%±5%, and the spectrum color rendering index of the full-color biomimetic light source is greater than 95, and R1-R15 are all greater than 90. Specifically, as shown in Figure 8 .

[0090] The absolute light power value of 380-435 nm violet light is 0.40; the absolute light power value of 435-475 nm blue light is 0.75; the absolute light power value of 475-492 nm cyan light is 0.72; the absolute light power value of 492-577 nm green light is 0.83; the absolute light power value of 577-597 nm yellow light is 0.82; the absolute light power value of 597-622 nm orange light is 0.85; and the absolute light power value of 622-700 nm red light is 0.77. The light source spectrum of the high color temperature light source group is a full-color biomimetic light source, and the approximation degree of the full-color biomimetic light source to the natural light spectrum of the same color temperature is Ai / Bi; wherein Ai refers to the radiation amount of the full-color biomimetic light source at inm, and Bi refers to the radiation amount of the natural light spectrum of the same color temperature at inm; when 380 nm≤i≤480 nm, Ai / Bi is 95%; when 480 nm≤i≤600 nm, Ai / Bi is 100%; and when 600 nm≤i≤700 nm, Ai / Bi is 100%.

[0091] As shown in Figure 5As shown, a panel light group 1 is installed on the ceiling of a 60-square-meter classroom, including the panel light structure A provided in Example 2. There are a total of 16 panel lights, arranged in 4 rows and 4 columns. The power of the 16 panel lights is equal, and all the panel lights in each row are connected to the same driver for control.

[0092] The lighting method using a panel light group, with 16 panel lights as the lighting source, includes the following steps:

[0093] Step 1: The lighting source gradually changes from the highest color temperature of 5600K to the lowest color temperature of 3000K. During the color temperature gradient, the lighting brightness remains unchanged at 900 Lux. The color temperature gradient lasts for 16 seconds. Then, while maintaining the lowest color temperature, the lighting brightness decreases from 900 Lux to 270 Lux within 1.0 second and remains on for 3 seconds. The brightness then increases to 900 Lux within 1.0 second.

[0094] Step 3: The lighting source gradually changes from a minimum color temperature of 3000K to a maximum color temperature of 5600K. During the color temperature gradient, the lighting brightness remains unchanged at 900 Lux. The color temperature gradient lasts for 16 seconds. Afterwards, while maintaining the maximum color temperature, the lighting brightness decreases from 900 Lux to 270 Lux within 1.0 second and remains at that level for 3 seconds. The brightness then increases to 900 Lux within 1.0 second.

[0095] Step 3: Repeat the steps from step 1 to step 2 to perform cyclic lighting.

[0096] Table 1 shows the dimming and color adjustment parameters for two white light modules, 2700K and 5600K full-color bionic light sources. By varying the current ratio of the two modules, color temperatures between 2700K and 5600K can be achieved. By fixing the current ratio of the two modules and adjusting the current of each module, different brightness output levels can be achieved.

[0097] Table 1

[0098]

[0099] Example 3

[0100] Example 3 adopts the same panel light structure as Example 2, except that the high color temperature light source bar includes 9 high color temperature lamp beads arranged at intervals; the low color temperature light source bar includes 9 low color temperature lamp beads arranged at intervals.

[0101] Specifically, a single low-color temperature lamp bead has a color temperature of 3000K. The phosphor layer of the full-color bionic white LED light source includes a first film layer, a second film layer, and a third film layer stacked in sequence. The first film layer includes a first phosphor and a film-forming material, silicone; the second film layer includes a second phosphor and a film-forming material, silicone; and the third film layer includes a third phosphor and a film-forming material, silicone. The mass ratio of the first, second, and third phosphors is 20:50:35.

[0102] The first phosphor includes phosphor A2, which is Y3(Al, Ga)5O with a luminous wavelength of 490 nm. 12 .

[0103] The second phosphor includes phosphor B1 and phosphor B2. Phosphor B1 is BaSi2O2N2 with a light emission wavelength of 525 nm, and phosphor B2 is BaSi2O2N2 with a light emission wavelength of 540 nm. The mass ratio of phosphor B1 to phosphor B2 is 55:50.

[0104] The third phosphor includes phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E, and phosphor F. Phosphor C1 is (Ca, Sr)AlSiN3 with an emission wavelength of 630 nm, phosphor C2 is (Ca, Sr)AlSiN3 with an emission wavelength of 660 nm, phosphor C3 is (Ca, Sr)AlSiN3 with an emission wavelength of 679 nm, phosphor D is (Ca, Sr)AlSiN3 with an emission wavelength of 720 nm, phosphor E is (Ca, Sr)AlSiN3 with an emission wavelength of 740 nm, and phosphor F is (Ca, Sr)AlSiN3 with an emission wavelength of 795 nm. The mass ratio of phosphors C1, C2, C3, D, E, and F is 9:12:15:20:21:25.

[0105] At the same time, the film forming method is the spraying method, the film thickness of the first film layer is 0.004mm and the first phosphor concentration is 67%, the film thickness of the second film layer is 0.004mm and the second phosphor concentration is 67%, and the film thickness of the third film layer is 0.004mm and the third phosphor concentration is 67%.

[0106] The spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95% ± 5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1 to R15 are all greater than 90. Figure 9 shown.

[0107] The absolute optical power value of 380-435nm violet light is 0.33; the absolute optical power value of 435-475nm blue light is 0.48; the absolute optical power value of 475-492nm cyan light is 0.8; the absolute optical power value of 492-577nm green light is 0.9; the absolute optical power value of 577-597nm yellow light is 1.13; the absolute optical power value of 597-622nm orange light is 1.2; the absolute optical power value of 622-700nm red light is 1.37. The light source spectrum of the low color temperature light source group is a full-color bionic light source, and the approximation between the full-color bionic light source and the natural light spectrum with the same color temperature is Ai / Bi; where Ai refers to the radiation of the full-color bionic light source at 1 nm, and Bi is the radiation of the natural light spectrum with the same color temperature at 1 nm; when 380nm≤i≤480nm, Ai / Bi is 93%; when 480nm≤i≤600nm, Ai / Bi is 96%; when 600nm≤i≤700nm, Ai / Bi is 95%.

[0108] Specifically, a single high color temperature lamp bead has a color temperature of 4200K. The phosphor layer of the full-color bionic white LED light source includes a first film layer, a second film layer, and a third film layer stacked in sequence. The first film layer includes a first phosphor and a film-forming material, silicone; the second film layer includes a second phosphor and a film-forming material, silicone; and the third film layer includes a third phosphor and a film-forming material, silicone. The mass ratio of the first, second, and third phosphors is 20:70:25.

[0109] The first phosphor includes phosphor A2, which is Y3(Al, Ga)5O with a luminous wavelength of 490 nm. 12 .

[0110] The second phosphor includes phosphor B1 and phosphor B2. Phosphor B1 is BaSi2O2N2 with a light emission wavelength of 525 nm, and phosphor B2 is BaSi2O2N2 with a light emission wavelength of 540 nm. The mass ratio of phosphor B1 to phosphor B2 is 30:40.

[0111] The third phosphor includes phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E, and phosphor F. Phosphor C1 is (Ca, Sr)AlSiN3 with an emission wavelength of 630 nm, phosphor C2 is (Ca, Sr)AlSiN3 with an emission wavelength of 660 nm, phosphor C3 is (Ca, Sr)AlSiN3 with an emission wavelength of 679 nm, phosphor D is (Ca, Sr)AlSiN3 with an emission wavelength of 720 nm, phosphor E is (Ca, Sr)AlSiN3 with an emission wavelength of 740 nm, and phosphor F is (Ca, Sr)AlSiN3 with an emission wavelength of 795 nm. The mass ratio of phosphors C1, C2, C3, D, E, and F is 9:12:15:20:20:22.

[0112] At the same time, the film forming method is the spraying method, the film thickness of the first film layer is 0.003mm and the first phosphor concentration is 67%, the film thickness of the second film layer is 0.003mm and the second phosphor concentration is 67%, and the film thickness of the third film layer is 0.003mm and the third phosphor concentration is 67%.

[0113] The spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95% ± 5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1 to R15 are all greater than 90. Figure 10 shown.

[0114] The absolute optical power value of 380-435nm violet light is 0.35; the absolute optical power value of 435-475nm blue light is 0.6; the absolute optical power value of 475-492nm cyan light is 0.88; the absolute optical power value of 492-577nm green light is 0.85; the absolute optical power value of 577-597nm yellow light is 1.0; the absolute optical power value of 597-622nm orange light is 0.95; the absolute optical power value of 622-700nm red light is 1.2. The light source spectrum of the high color temperature light source group is a full-color bionic spectrum, and the approximation between the full-color bionic spectrum and the natural light spectrum with the same color temperature is Ai / Bi; where Ai refers to the radiation of the full-color bionic light source at 1 nm, and Bi is the radiation of the natural light spectrum with the same color temperature at 1 nm; when 380nm≤i≤480nm, Ai / Bi is 95%; when 480nm≤i≤600nm, Ai / Bi is 98%; when 600nm≤i≤700nm, Ai / Bi is 97%.

[0115] The panel lights shown in Example 3 are applied to the ceiling of a 60-square-meter classroom. There are 16 panel lights in total, arranged in 4 rows and 4 columns. The power of the 16 panel lights is equal, and all the panel lights in each row are connected to the same driver for control.

[0116] The lighting method using a panel light group, with 16 panel lights as the lighting source, includes the following steps:

[0117] Step 1: The lighting source gradually changes from the highest color temperature value of 4200K to the lowest color temperature value of 3000K. During the color temperature gradient process, the lighting brightness value remains unchanged at 800 Lux, and the color temperature gradient lasts for 8 seconds. Then, maintaining the lowest color temperature value, the lighting brightness value decreases from 800 Lux to 200 Lux within 1.5 seconds and maintains the lighting for 3 seconds. The brightness value then increases to 800 Lux within 1.5 seconds.

[0118] Step 2: The lighting source gradually changes from the lowest color temperature value of 3000K to the highest color temperature value of 4200K. During the gradual change, the brightness value is maintained at 100% of 800 Lux, and the color temperature gradient duration is 8 seconds. Then, keeping the highest color temperature value unchanged, the lighting brightness is reduced from 800 Lux to 200 Lux within 1.5 seconds, and the lighting is maintained for 3 seconds. The brightness value is then increased to 800 Lux within 1.5 seconds.

[0119] Step 3: Repeat steps 1 to 2 to perform circular lighting.

[0120] Example 4

[0121] Example 4 adopts the same panel light structure as Example 2, except that the high color temperature light source bar includes 10 high color temperature lamp beads arranged at intervals; the low color temperature light source bar includes 10 low color temperature lamp beads arranged at intervals.

[0122] Specifically, a single low-color temperature lamp bead has a color temperature of 4000K. The phosphor layer of the full-color bionic white LED light source includes a first film layer and a second film layer stacked in sequence. The first film layer comprises a film-forming material, silica gel, and a first mixture. The second film layer comprises a film-forming material, silica gel, and a second mixture. The first mixture comprises phosphor A2, phosphor B3, and phosphor C2 in a mass ratio of 20:70:30.

[0123] Among them, the phosphor B3 is BaSi2O2N2 with a luminescence wavelength of 535nm.

[0124] The second mixture includes phosphor D, phosphor E, and phosphor F in a mass ratio of 20:20:25.

[0125] Meanwhile, the film forming method is a film pressing method, the thickness of the first film layer is 0.16 mm and the concentration of the first mixture is 69%, and the thickness of the second film layer is 0.16 mm and the concentration of the second mixture is 69%.

[0126] The spectrum of a full-color bionic light source is one in which the radiant power distribution curve of the light source is 95% ± 5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and the R1 to R15 are all greater than 90. In the spectrum, the absolute optical power value of violet light from 380 to 435 nm is 0.33; the absolute optical power value of blue light from 435 to 475 nm is 0.42; the absolute optical power value of cyan light from 475 to 492 nm is 0.72; the absolute optical power value of green light from 492 to 577 nm is 0.66; the absolute optical power value of yellow light from 577 to 597 nm is 0.88; the absolute optical power value of orange light from 597 to 622 nm is 0.88; and the absolute optical power value of red light from 622 to 700 nm is 0.95. The light source spectrum of the low color temperature light source group is a full-color bionic spectrum, and the approximation between the full-color bionic spectrum and the natural light spectrum with the same color temperature is Ai / Bi; where Ai refers to the radiation of the full-color bionic light source at 1 nm, and Bi is the radiation of the natural light spectrum with the same color temperature at 1 nm; when 380nm≤i≤480nm, Ai / Bi is 91%; when 480nm≤i≤600nm, Ai / Bi is 99%; when 600nm≤i≤700nm, Ai / Bi is 100%.

[0127] Specifically, a single high color temperature lamp bead has a color temperature of 6000K, wherein the fluorescent layer of the full-color bionic white light LED light source includes a first film layer and a second film layer stacked in sequence.

[0128] The first film layer includes a film-forming material silica gel and a first mixture, and the second film layer includes a film-forming material silica gel and a second mixture. The first mixture includes phosphor A2, phosphor B3, and phosphor C2 in a mass ratio of 15:60:6.

[0129] Among them, the phosphor B3 is BaSi2O2N2 with a luminescence wavelength of 535nm.

[0130] The second mixture includes phosphor D, phosphor E, and phosphor F in a mass ratio of 40:60:75.

[0131] Meanwhile, the film forming method is a film pressing method, the thickness of the first film layer is 0.13 mm and the concentration of the first mixture is 40%, and the thickness of the second film layer is 0.13 mm and the concentration of the second mixture is 63%.

[0132] The spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95% ± 5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1 to R15 are all greater than 90. Figure 11 shown.

[0133] The absolute optical power value of 380-435nm violet light is 0.43; the absolute optical power value of 435-475nm blue light is 0.78; the absolute optical power value of 475-492nm cyan light is 1.25; the absolute optical power value of 492-577nm green light is 1.15; the absolute optical power value of 577-597nm yellow light is 1.1; the absolute optical power value of 597-622nm orange light is 1.0; the absolute optical power value of 622-700nm red light is 0.93. The light source spectrum of the high color temperature light source group is full-color bionic, and the approximation between the full-color bionic and the natural light spectrum with the same color temperature is Ai / Bi; where Ai refers to the radiation of the full-color bionic light source at 1 nm, and Bi is the radiation of the natural light spectrum with the same color temperature at 1 nm; when 380nm≤i≤480nm, Ai / Bi is 93%; when 480nm≤i≤600nm, Ai / Bi is 97%; when 600nm≤i≤700nm, Ai / Bi is 91%.

[0134] The panel lights shown in Example 4 are applied to the ceiling of a 60-square-meter classroom. There are 16 panel lights in total, arranged in 4 rows and 4 columns. The power of the 16 panel lights is equal, and all the panel lights in each row are connected to the same driver for control.

[0135] The lighting method using a panel light group, with 16 panel lights as the lighting source, includes the following steps:

[0136] Step 1: The lighting source gradually changes from the highest color temperature value of 6000K to the lowest color temperature value of 4000K. During the color temperature gradient process, the lighting brightness value remains unchanged at 600 Lux. The color temperature gradient lasts for 10 seconds. Then, maintaining the lowest color temperature value, the lighting brightness value decreases from 600 Lux to 250 Lux within 0.8 seconds and maintains the lighting for 4 seconds. The brightness value then increases to 600 Lux within 0.8 seconds.

[0137] Step 2: The lighting source gradually changes from the lowest color temperature value of 4000K to the highest color temperature value of 6000K. During the gradual change, the brightness value is maintained at 100% of 600 Lux, and the color temperature gradient lasts for 10 seconds. Then, while maintaining the highest color temperature value, the lighting brightness is reduced from 600 Lux to 250 Lux within 0.8 seconds and maintained for 4 seconds. The brightness value is then increased to 600 Lux within 0.8 seconds.

[0138] Step 3: Repeat steps 1 to 2 to perform circular lighting.

[0139] Example 5

[0140] Example 5 adopts the same panel light structure as Example 2, except that the high color temperature light source bar includes 8 high color temperature lamp beads arranged at intervals; the low color temperature light source bar includes 8 low color temperature lamp beads arranged at intervals.

[0141] Specifically, a single low color temperature lamp bead has a color temperature of 2800K, wherein the fluorescent layer of the full-color bionic white light LED light source includes a first film layer and a second film layer stacked in sequence.

[0142] The first film layer includes a film-forming material silica gel and a first mixture, and the second film layer includes a film-forming material silica gel and a second mixture. The first mixture includes phosphor A2, phosphor B3, and phosphor C2 in a mass ratio of 13:75:10.

[0143] Among them, the phosphor B3 is BaSi2O2N2 with a luminescence wavelength of 535nm.

[0144] The second mixture includes phosphor D, phosphor E, and phosphor F in a mass ratio of 40:60:70.

[0145] Meanwhile, the film forming method is a film pressing method, the thickness of the first film layer is 0.22 mm and the concentration of the first mixture is 63%, and the thickness of the second film layer is 0.22 mm and the concentration of the second mixture is 67%.

[0146] The spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1 to R15 are all greater than 90.

[0147] In the spectrum, the absolute optical power value of violet light from 380 to 435 nm is 0.22; the absolute optical power value of blue light from 435 to 475 nm is 0.44; the absolute optical power value of cyan light from 475 to 492 nm is 0.62; the absolute optical power value of green light from 492 to 577 nm is 0.55; the absolute optical power value of yellow light from 577 to 597 nm is 0.92; the absolute optical power value of orange light from 597 to 622 nm is 0.92; and the absolute optical power value of red light from 622 to 700 nm is 0.95. The light source spectrum of the low color temperature light source group is a full-color bionic spectrum, and the approximation between the full-color bionic spectrum and the natural light spectrum with the same color temperature is Ai / Bi; where Ai refers to the radiation of the full-color bionic light source at 1 nm, and Bi is the radiation of the natural light spectrum with the same color temperature at 1 nm; when 380nm≤i≤480nm, Ai / Bi is 91%; when 480nm≤i≤600nm, Ai / Bi is 95%; when 600nm≤i≤700nm, Ai / Bi is 90%.

[0148] Specifically, a single high color temperature lamp bead has a color temperature of 4800K, wherein the fluorescent layer of the full-color bionic white light LED light source includes a first film layer and a second film layer stacked in sequence.

[0149] The first film layer comprises a film-forming material, silica gel, and a first mixture. The second film layer comprises a film-forming material, silica gel, and a second mixture. The first mixture comprises phosphors A2, B3, and C2 in a mass ratio of 9:60:9. Phosphor B3 is BaSi2O2N2, which emits light at a wavelength of 535nm.

[0150] The second mixture includes phosphor D, phosphor E, and phosphor F in a mass ratio of 30:55:60.

[0151] The film is formed using a lamination method. The first film layer has a thickness of 0.17 mm and a first mixture concentration of 49%. The second film layer has a thickness of 0.17 mm and a second mixture concentration of 70%. The spectrum of the full-color bionic light source is a spectrum in which the radiation power distribution curve of the light source is 95% ± 5% similar to a natural spectrum of the same color temperature. The spectral color rendering index of the full-color bionic light source is greater than 95, and R1 to R15 are all greater than 90.

[0152] In the spectrum, the absolute optical power value of violet light from 380 to 435 nm is 0.36; the absolute optical power value of blue light from 435 to 475 nm is 0.7; the absolute optical power value of cyan light from 475 to 492 nm is 0.85; the absolute optical power value of green light from 492 to 577 nm is 0.85; the absolute optical power value of yellow light from 577 to 597 nm is 0.88; the absolute optical power value of orange light from 597 to 622 nm is 0.84; and the absolute optical power value of red light from 622 to 700 nm is 0.78. The light source spectrum of the high color temperature light source group is a full-color bionic spectrum, and the approximation between the full-color bionic spectrum and the natural light spectrum with the same color temperature is Ai / Bi; where Ai refers to the radiation of the full-color bionic light source at 1 nm, and Bi is the radiation of the natural light spectrum with the same color temperature at 1 nm; when 380nm≤i≤480nm, Ai / Bi is 92%; when 480nm≤i≤600nm, Ai / Bi is 97%; when 600nm≤i≤700nm, Ai / Bi is 96%.

[0153] The panel lights shown in Example 5 are applied to the ceiling of a 60-square-meter classroom. There are 16 panel lights in total, arranged in 4 rows and 4 columns. The power of the 16 panel lights is equal, and all the panel lights in each row are connected to the same driver for control.

[0154] The lighting method using a panel light group, with 16 panel lights as the lighting source, includes the following steps:

[0155] Step 1: The lighting source gradually changes from the highest color temperature value of 4800K to the lowest color temperature value of 2800K. During the color temperature gradient process, the lighting brightness value remains unchanged at 1000 Lux, and the color temperature gradient duration is 12 seconds. Then, maintaining the lowest color temperature value, the lighting brightness value decreases from 1000 Lux to 300 Lux within 1.1 seconds, and maintains the lighting for 5 seconds. The brightness value then increases to 1000 Lux within 1.1 seconds.

[0156] Step 2: The lighting source gradually changes from the lowest color temperature value of 2800K to the highest color temperature value of 4800K. During the gradual change, the brightness value is maintained at 100% of 1000 Lux for 12 seconds. Then, the highest color temperature value is maintained unchanged, and the lighting brightness is reduced from 1000 Lux to 300 Lux within 1.1 seconds. The lighting is maintained for 5 seconds. The brightness value is then increased to 1000 Lux within 1.1 seconds.

[0157] Step 3: Repeat steps 1 to 2 to perform circular lighting.

[0158] Comparative Example 1

[0159] Compared with Example 2, the illumination is changed to an ordinary light source, not a full-color bionic light source, and the same lighting method as Example 2 is adopted.

[0160] Among them, the common LED light source has a closeness of 50% to the natural spectrum of the same color temperature. The optical power of 640-650nm is 0.65; the optical power of 650-660nm is 0.44; the optical power of 660-670nm is 0.36; and the optical power of 670-700nm is 0.21.

[0161] Comparative Example 2

[0162] Compared with Example 2, the single full-color bionic light source in Example 2 is replaced with the full-spectrum LED disclosed in Example 1 of Chinese Patent CN109860370B, and the same lighting method as Example 2 is used. Figure 12 shown.

[0163] Comparative Example 3

[0164] Compared to Example 2, the illumination is changed to a common LED light source, which is not full-color bionic. The common LED light source has a 50% similarity to the natural spectrum of the same color temperature, and the optical power at 640-650nm is 0.65; the optical power at 650-660nm is 0.44; the optical power at 660-670nm is 0.36; and the optical power at 670-700nm is 0.21.

[0165] The panel lights shown in Comparative Example 3 are used on the ceiling of a 60-square-meter classroom. There are a total of 16 panel lights, arranged in 4 rows and 4 columns. The power of the 16 panel lights is equal, and all the panel lights in each row are connected to the same driver for control.

[0166] During the lighting process, 16 panel lights are used as lighting sources, the color temperature remains unchanged, and the brightness value remains unchanged at 900 Lux.

[0167] Test 1

[0168] The experimental subjects were selected from some students in some junior high schools in Sichuan. Seven groups were set up, each group contained two classes, and each class had 45-50 students. In each group, the gender ratio, age, myopia and non-myopia distribution of students were statistically significant, and all aspects were basically balanced and comparable. In the classrooms of the seven groups, the eye protection devices and corresponding lighting methods of Examples 2-5 and Comparative Examples 1-3 were installed in the same positions and numbers. The specific student conditions are shown in Table 1.

[0169] Test conditions: 8:30-11:30 a.m. and 2:00-4:30 p.m. every day, and self-study from 7:00-9:00 p.m.; during holidays, study for no more than 3 hours at night and go to bed after 9 p.m.

[0170] During the study period, there is a 15-minute break every 45 minutes in class or study. For this short break, students should go outdoors and enjoy the scenery.

[0171] The test period was 24 weeks, and the changes in visual acuity are shown in Table 2. In Table 2, the effective rate is the percentage of eyes with reduced vision.

[0172] After 6 months, the subjects were asked to rate their eye fatigue, with high eye fatigue being rated as low and high eye comfort being rated as high.

[0173] For high scores, a standard of 0-10 points was set, where 10 points indicated high eye comfort and 1 point indicated poor eye comfort. The higher the score, the higher the eye comfort. The test results are shown in Table 2. In Table 2, the effective rate is the proportion of eyes with reduced diopter.

[0174] Among them, in Table 1, the visual acuity of highly myopic eyes is above 600 degrees, the visual acuity of moderate myopic eyes is between 300 degrees and 600 degrees, and the visual acuity of mild myopic eyes is below 300 degrees.

[0175] Table 1

[0176]

[0177]

[0178] Table 2

[0179]

[0180]

[0181] From the test results of Table 2, it can be seen that Examples 2-5 adopt the technical solution of the present invention, and the score of relieving eye fatigue can reach 9.65 points. The treatment efficiency of moderate to high myopia and mild myopia eyes reaches 100%, and the maximum can be reduced by 200 degrees. By adjusting the lighting source and the light source brightness value change method during the lighting process in a targeted manner, under the illumination of excellent light sources, the brightness is changed by imitating ecology, and the active adjustment of the eye axis function of the human eye is achieved. It makes people blink unconsciously, and the active adjustment of the eye axis conforms to visual habits, thereby achieving the effect of protecting the eyes, alleviating eye fatigue and alleviating or preventing myopia. Comparative Examples 1-2 do not adopt the full-color bionic light source of the present application, and the effect of relieving eye fatigue is significantly reduced. Some eyes will also produce a phenomenon of increased degree, and a good effect of alleviating or preventing myopia cannot be achieved. The test data of the comparative example 3 group can be seen that only using conventional lighting sources and conventional lighting methods, the eye degree will increase to varying degrees, and non-myopic eyes will turn into myopia, and the technical effect is poor.

[0182] The present invention discloses a panel lamp, comprising a frame, a diffusion plate and a chassis, wherein the diffusion plate is clamped in the frame, and the frame is connected to the chassis by a buckle; at the same time, an LED light source board, an LED driving device and a female terminal line are arranged between the diffusion plate and the chassis; the female terminal line is connected to the positive and negative poles of the LED light source board, and at the same time, the female terminal line is connected to the LED driving device; the LED light source board comprises a high color temperature light source group and a low color temperature light source group; the high color temperature light source group is composed of at least two high color temperature light source bars connected in series, in parallel or in series and parallel, and the low color temperature light source group is composed of at least two low color temperature light source bars connected in series, in parallel or in series and parallel; all the high color temperature light source bars are connected in series, in parallel or in series and parallel; The source bar and all the low color temperature light source bars are arranged at intervals, and the light source bar adjacent to the high color temperature light source bar is the low color temperature light source bar, and the light source bar adjacent to the low color temperature light source bar is the high color temperature light source bar; the high color temperature light source bar and the low color temperature light source bar are both full-color bionic light sources; the LED driving device can drive the low color temperature light source group and the high color temperature light source group respectively, adjust the magnitude of the low color temperature light source group current I1 and the magnitude of the high color temperature light source group current I2 to achieve the change of the lighting brightness; adjust the current ratio of the low color temperature light source group and the high color temperature light source group to achieve the change of the lighting color temperature value. The structure is simple and easy to install. The panel light disclosed in the present application is a full-color bionic light source. The spectrum of the lighting source forms a pattern of high-saturation red light and high-saturation cyan light. Based on the principle of color imaging on the retina, the full-color bionic light source helps to adjust the visual focus and eye axis during visual imaging, realize visual imaging that restores the color of objects, ensures high visual adaptability and comfort, and effectively relieves eye fatigue under lighting. By adjusting the current ratio passing through the low color temperature light source group and the high color temperature light source group, the change of the lighting color temperature value can be adjusted; by simultaneously adjusting the magnitude of the current I1 of the low color temperature light source group and the magnitude of the current I2 of the high color temperature light source group, the change of the lighting brightness can be adjusted; by adjusting the coordination of the change of the lighting color temperature value and the change of the brightness, the human eye can be caused to blink passively, and the eyeball can adjust and reset autonomously, so as to actively adjust the eye axis and prevent the eye axis from lengthening. The panel light has a simple structure and is easy to promote.

[0183] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vision protection panel light, characterized in that: The device comprises a frame, a diffuser plate, and a chassis. The diffuser plate is clamped in the frame, and the frame is connected to the chassis by a snap. An LED light source board, an LED driver, and female terminal wires are disposed between the diffuser plate and the chassis. The female terminal wires are connected to the positive and negative electrodes of the LED light source board, and are also connected to the LED driver. The LED driver can drive the LED light source board for illumination. The light source of the LED light source board is a full-color bionic light source. The vision protection panel light is illuminated by the following method, the illumination light source is a panel light group, and the panel light group includes at least one vision protection panel light: Step 1: The lighting source gradually changes from the highest color temperature value to the lowest color temperature value. During the color temperature gradient process, the lighting maintains a brightness value of 100%, and the color temperature gradient duration is 8s to 16s. Then, while maintaining the lowest color temperature value, the lighting brightness value decreases from 100% brightness value to 25% to 45% brightness value within 0.8s to 1.5s, and the lighting is maintained for 3s to 5s. The brightness value then increases to 100% brightness value within 0.8s to 1.5s. Step 2: The lighting source gradually changes from the lowest color temperature value to the highest color temperature value. During the gradual change, the lighting maintains a brightness value of 100%, and the color temperature gradual change duration is 8s to 16s. Then, while maintaining the highest color temperature value, the lighting brightness decreases from 100% brightness to 25% to 45% brightness within 0.8s to 1.5s, and maintains the lighting for 3s to 5s. After that, the brightness value increases to 100% brightness within 0.8s to 1.5s. Step 3: Repeat steps 1 to 2 to perform cyclic lighting; wherein in step 1, the total lighting time is 14s to 22s, and in step 2, the total lighting time is 14s to 22s.

2. The eyesight protection panel light according to claim 1, characterized in that: The LED light source board includes a high color temperature light source group and a low color temperature light source group; the high color temperature light source group is composed of at least two high color temperature light source bars connected in series, in parallel, or in series and parallel, and the low color temperature light source group is composed of at least two low color temperature light source bars connected in series, in parallel, or in series and parallel; all the high color temperature light source bars and all the low color temperature light source bars are arranged at intervals, and the light source bars adjacent to the high color temperature light source bars are the low color temperature light source bars, and the light source bars adjacent to the low color temperature light source bars are the high color temperature light source bars; the high color temperature light source bars and the low color temperature light source bars are both full-color bionic light sources; the LED driving device can drive the low color temperature light source group and the high color temperature light source group respectively, adjust the magnitude of the low color temperature light source group current I1 and the magnitude of the high color temperature light source group current I2 to achieve the change of the lighting brightness; adjust the current ratio passing through the low color temperature light source group and the high color temperature light source group to achieve the change of the lighting color temperature value.

3. The vision protection panel light according to claim 2, characterized in that: The high color temperature light source strip includes a plurality of high color temperature lamp beads arranged at intervals; the low color temperature light source strip includes a plurality of low color temperature lamp beads arranged at intervals.

4. The vision protection panel light according to claim 3, characterized in that: The color temperature of the low color temperature light source group and the color temperature of the high color temperature light source group are two different color temperature values ​​between 2700K and 5600K.

5. The vision protection panel light according to any one of claims 1 to 4, characterized in that: The bottom surface of the LED light source board is coated with a graphene adhesive layer, and the graphene adhesive layer is used to fix the LED light source board on the chassis. The chassis is provided with a plurality of spaced air holes.

6. A panel light assembly, characterized in that: The invention comprises at least two eyesight protection panel lights according to any one of claims 1 to 5, which are connected in series, in parallel or in series and parallel.

7. The panel light assembly according to claim 6, wherein: In the panel light group, the power of all the vision protection panel lights is equal.

8. The panel light assembly according to claim 7, wherein: In the panel light group, all the eyesight protection panel lights are arranged in rows and columns, wherein all the eyesight protection panel lights in each row are connected to the same driver for control.

9. A lighting method for a panel light assembly according to any one of claims 6 to 8, characterized in that: The lighting source is at least one of the vision protection panel lights in the panel light group; the steps include: Step 1: The lighting source gradually changes from the highest color temperature value to the lowest color temperature value. During the color temperature gradient process, the lighting maintains a brightness value of 100%, and the color temperature gradient duration is 8s to 16s. Then, while maintaining the lowest color temperature value, the lighting brightness value decreases from 100% brightness value to 25% to 45% brightness value within 0.8s to 1.5s, and the lighting is maintained for 3s to 5s. The brightness value then increases to 100% brightness value within 0.8s to 1.5s. Step 2: The lighting source gradually changes from the lowest color temperature value to the highest color temperature value. During the gradual change, the lighting maintains a brightness value of 100%, and the color temperature gradual change duration is 8s to 16s. Then, while maintaining the highest color temperature value, the lighting brightness decreases from 100% brightness to 25% to 45% brightness within 0.8s to 1.5s, and the lighting is maintained for 3s to 5s. The brightness value then increases to 100% brightness within 0.8s to 1.5s. Step 3: Repeat steps 1 to 2 to perform cyclic lighting; wherein in step 1, the total lighting time is 14s to 22s, and in step 2, the total lighting time is 14s to 22s.

10. The lighting method of the panel light assembly according to claim 9, wherein: The brightness value of 100% shall not be less than 600 Lux, and the brightness value of 25% to 45% shall not be greater than 400 Lux.

11. The lighting method of the panel light assembly according to claim 10, characterized in that: The difference between the highest color temperature value and the lowest color temperature value is ≥1200K.

Images