Coordinated dynamic lighting method and its dimmable direct current incandescent lamp

Abstract

The application provides a synergic dynamic lighting method and its adjustable light direct current incandescent lamp, relates to the field of vision and lighting, and aims to ensure that light is uniform and dynamic in the field of vision; the color temperature is strictly imitated candlelight; the core is direct current adjustable light incandescent lamp technology; and the light in the field of vision is mostly non-uniform and static in the present night desktop lighting, and the light quality is never as good as direct current incandescent lamp; this easily leads to eye accommodation laxity and induces axial myopia; the application mainly comprises two direct current incandescent lamp platforms, one of which illuminates a book, and the other of which illuminates a white wall in front of the eyes; the light intensity of each is adjustable to ensure the uniformity of light in the field of vision, so that the fovea and peripheral rod cells of the retina are stimulated at the same time; the two lamps can also realize the synchronous adjustment of illumination according to the program, thereby guiding the dynamic focusing of the eyes and realizing dynamic lighting; the dynamic also reflects the low color temperature mammal lighting imitating candlelight according to the biological clock and the anti-alzheimer's lighting with 40Hz deep frequency flash.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of visual and light health lighting, in particular to a synergistic dynamic lighting method and its adjustable light DC incandescent lamp. BACKGROUND

[0002] Dynamic lighting generally refers to automatically changing the color temperature of the lamp according to the human biological clock. In this application, although this meaning is also included, it is more referred to as causing the eyes to re-focus precisely by automatically changing the reading and writing illuminance, thereby forcing the eyes to exit the accommodation laxity state, and achieving the purpose of inhibiting the abnormal growth of the eye axis.

[0003] The cone cells in the fovea of the human eye are responsible for precise imaging and color resolution; the rod cells in the periphery of the retina can only perform black and white imaging of the visual field, although the resolution is low, but they are very sensitive to dynamic scenes. In addition, the rod cells are also responsible for detecting the intensity of light in the entire visual field, and then determining the size of the pupil; optically, the lower the illuminance, the larger the pupil, and the smaller the back focal depth range; the back focal depth refers to the range of the retina moving backward to the brain under the condition of ensuring "clear vision"; the larger the range, the more likely the eye axis to lengthen, thereby inducing axial myopia, and the current myopia of adolescents is mostly axial myopia; under low illuminance, the range of the retina moving backward is smaller, so theoretically, low illuminance does not induce abnormal growth of the eye axis, but can help the eye to find the precise focusing point. This is an important theoretical starting point of the present application. It can also be explained why previous people read by candlelight, with an illuminance of only 4Lx, and there are not so many myopia as today under an illuminance of 400Lx. Therefore, low illuminance is not the direct cause of myopia; but people's eyes will indeed instinctively approach the book under low illuminance, but whether myopia will really occur depends on whether the back focal depth range is allowed, so the applicant believes that the large focal depth under high reading and writing illuminance is the fundamental cause of myopia. It is disturbing that all "eye protection" desk lamps on the market are still moving towards high illuminance of 1000Lx; due to human preference for light, schools and families also blindly pursue high illuminance, so the present application is particularly urgent.

[0004] When people are outdoors, the brightness of the entire field of view (about 124 degrees) is usually uniform, so the pupil and related eye accommodation position are determined; but at night, if only a desk lamp is turned on, the light in the entire field of view is not uniform, at which time the related eye accommodation is helpless; frequent exploratory adjustment eventually leads to visual fatigue. For this reason, people will involuntarily turn on the ceiling lamp in the room to make the light environment in the entire field of view as uniform as possible. But doing so usually brings about two other problems: one is that the illumination exceeds the standard, which is harmful as described in the foregoing, and over-high illumination easily leads to myopia by indulging the eye axis growth; the other is that the light quality and light health of a general desk lamp are better than those of a ceiling lamp, that is, the light of the ceiling lamp will pollute the light of the desk lamp, leading to unnecessary blue light hazards. Therefore, for children's room lighting, the desk lamp and the ceiling lamp or wall lamp must be cooperatively controlled to achieve the basic requirement of uniform light in the field of view and moderate brightness, which is one of the problems to be solved by the present application.

[0005] According to optical analysis, the stronger the light, the smaller the pupil, the greater the back focal depth, and the more details of the longitudinal depth of the scene that can be seen, that is, humans will instinctively choose bright light; however, when reading or doing homework, the scene is flat; over-bright light leads to a large range of back focal depth, and the brain cannot perceive the precise position of the retina, so the retina of adolescents must be able to find the correct focal point position at any time. This requires the dynamic change of illumination to make the eye get out of the accommodation lazy state, especially to adjust to low illumination to obtain a precise focal point, which is one of the main features of the dynamic lighting referred to in the present application.

[0006] According to the applicant's investigation, neither the ophthalmic field (eye field) nor the lighting and display field (light field) has pointed out that the problem lies in the over-high reading and writing illumination, and the LED eye-protecting lamp itself does not have much problem. To eliminate this misunderstanding, a double light source must be used, one to illuminate the book and one to illuminate the white wall, to ensure that the light intensity in the entire field of view is generally uniform. At the same time, to promptly make the eye get out of the accommodation lazy state, the reading and writing illumination should be changed from time to time according to the program, forcing the eye to refocus and find the most precise retinal position. This requires two desk lamps to automatically change light according to the law in coordination. There are currently designs on the market that equip a desk lamp with two light sources or even three light sources, but usually they are designed to change color temperature or add a small night light, and they cannot coordinate to change the reading and writing illumination and the entire field of view illumination, especially they do not involve forcing the eye to get out of the accommodation lazy state or even the accommodation spasm state through the change of illumination.

[0007] The applicant has first identified that outdoor strong light is used for distance vision, and the weak light in the cave is used for near vision. Modern humans should not refer to outdoor illumination when selecting reading and writing illumination. Therefore, the present application will limit the maximum illumination on the desktop, which is also unique.

[0008] The above is the technical background of reading and writing illumination, and the following is the technical background of the non-visual effects of light and full-spectrum lighting involved in the present application:

[0009] The so-called non-visual effects of light refers to the fact that blue light in light is most easily transmitted through the eyes of animals, rather than the skin, to inhibit the pineal gland in the brain from secreting melatonin, which is a basic hormone with receptors in all organs of the body. Therefore, it is said that blue light in light will affect hormone secretion throughout the body through the eyes, which also includes sex hormone secretion. Currently, it is known that excessive blue light can cause macular degeneration, but this is only harmful to the eyes, while the real blue light hazard is to affect hormone secretion throughout the body. Generally, the non-visual effects of light = blue light content of the light source x illumination x exposure time. If the blue light content is referred to as a candle, which is set to 1, then the blue light content of an incandescent lamp is 1.4 times that of a candle; the blue light content of a fluorescent lamp and midday sunlight is 8.8 times that of an incandescent lamp; and the blue light content of a mobile phone display when displaying white, whether domestic or imported, is as high as 16 times that of a candle. The applicant has therefore pointed out that the non-visual effects of light that Chinese people have experienced have increased by 88,000 times in the past 60 years. The reason for this is that the unit of illumination "Lx" is originally intended to refer to the illumination of a candle at a distance of one meter, so 60 years ago, women were spinning yarn at a distance of 5 meters from an oil lamp, with an illumination of only 0.04 Lx, and a desktop illumination of 400 Lx is 10,000 times that value. Combined with the fact that the blue light content of a white fluorescent lamp is 8.8 times that of a candle, there has been a sudden increase of 88,000 times. This sudden change has completely changed humanity.

[0010] Another advantage of incandescent lamps that all artificial light sources cannot match is that they are truly full-spectrum. The applicant has numerically estimated that a three-primary-color rare-earth fluorescent lamp (i.e., an energy-saving lamp) lacks deep red light and near-infrared light with a wavelength greater than 625 nm, and the induced eye axis abnormal stretching amount and the influence of the front illumination are not much different, while the influence of the illumination is not much different from the influence of the visual distance in optics (current measures to prevent and control myopia only focus on the influence of the visual distance, i.e., only require children to maintain a reading and writing posture of "one foot, one fist, and one inch", and almost no attention is paid to the influence of illumination and spectrum). If an incandescent lamp is used for illumination, there will be no eye axis stretching amount caused by the lack of spectrum, i.e., myopia will not be caused by the lack of spectrum.

[0011] Alzheimer's disease is commonly known as "senile dementia", and in 2016, Li-Huei Tsai, a neurologist at the Massachusetts Institute of Technology, found that 40Hz LED light can prevent "senile dementia", and subsequently raised 4 million dollars in financing; another advantage of incandescent lamps is that they are rich in deep red and near-infrared light, which does not contribute to lighting, so people think that incandescent lamps are low in light efficiency and not energy-saving, but recent scientific research shows that this part of the light can penetrate 8cm into the head to protect neurons and brain tissue, and can prevent senile dementia, etc., so from the health point of view, this part of the light is indispensable; and a 25W bulb for 3 hours costs only 5 minutes of electricity, so it is actually a false proposition to say that incandescent lamps are not energy-saving. In the examples below, it will be mentioned that children's rooms, confinement centers and the elderly should use direct current incandescent lamps for the most healthy lighting, and the present application will solve the related technical problems and rediscover the advantages of incandescent lamps.

[0012] The applicant previously proposed "a method for forming a special lamp without flicker and low blue light full spectrum by incandescent lamp", which simply and ingeniously uses the newly emerging high-voltage electrolytic capacitor technology to solve the problem of traditional incandescent bulb flicker and short life. On this basis, the present application further realizes automatic dimming under the control of a single-chip microcomputer, and then realizes the aforementioned reading and writing dynamic lighting. Although the present application also uses PWM (pulse width modulation) dimming, it uses the thermal inertia of incandescent lamps, so it is equivalent to direct current dimming, which is completely different from the effect of LED using PWM dimming. The existing AC incandescent lamp dimming technology, although cheap, will introduce flicker, and it is difficult to achieve precise control of two light sources synchronously, and it is also impossible to make incandescent lamps work at short time overrated power.

[0013] In short, the existing lighting technology and standards not only generally go in the opposite direction in terms of reading and writing illuminance, but also generally lack in terms of spectrum, and also generally fail to realize that light will ripen children in terms of non-visual effects of light. At present, there is an urgent need for a coordinated dynamic lighting method and an adjustable direct current incandescent lamp to solve the above problems. SUMMARY

[0014] The purpose of the present application is to provide a coordinated dynamic incandescent lamp light source, which includes the following three dynamics:

[0015] (1) Illuminance dynamic, providing a uniform, dynamic, direct current, flicker-free, low blue light, full spectrum incandescent lamp light source for teenagers reading and writing, and through automatic dynamic dimming, the user can find the focus in time and get out of the state of adjustment laxity, thereby avoiding abnormal growth of the eye axis;

[0016] (2) Spectrum and illuminance dynamic, providing a direct current incandescent lamp light source with dynamic changes in spectrum and illuminance for confinement centers and the like;

[0017] (3) Flicker dynamic, providing a deep flicker incandescent lamp light source for preventing senile dementia.

[0018] The object of the present application is thus simultaneously achieved:

[0019] Taking the form of a desk lamp as an example but not limited to a desk lamp (also suitable for full-spectrum LED lamps), in order to make the light in the visual field range of the teenager reading and writing uniform, at least two desk lamp light sources, namely lamp A and lamp B, are used; the two lamps prefer to use tungsten filament bulbs as light sources.

[0020] The lamp base or control box of lamp A is equipped with a switch, a touch key, and a luxmeter; the touch key is a metal sheet closely attached to the plastic insulating part of the inner surface of the lamp base, used to sense the change in capacitance when the finger approaches; the touch key is connected with the single-chip microcomputer supporting touch function; the luxmeter is used to measure and evaluate the illumination and uniformity of light in the visual field, the main component of which is a silicon photocell connected with the A / D conversion port of the single-chip microcomputer through a coaxial shielded wire and a conventional pre-signal processor, and is only inserted into the lamp base when measurement is needed; the measurement results of the luxmeter are displayed through a remote controller or transmitted to a mobile phone through Bluetooth for display; it is also not excluded that the luxmeter is cancelled and replaced by a light ring mirror probe of a mobile phone; the switch is a power supply master switch connected with a fuse after it, which can shut off the mains to the full-wave rectifier, the switching power supply A with isolation, and the switching power supply B with isolation; after the mains is rectified by the full-wave rectifier, it is filtered by a high-voltage electrolytic capacitor to obtain a DC high voltage of about 310V for powering the tungsten filament bulb; the rated working voltage of the tungsten filament bulb is 220V, which cannot work directly at 310V, so the single-chip microcomputer outputs a pulse with a certain duty cycle through the pulse width modulation (PWM) port, which drives the switching tube to make the tungsten filament bulb work in the form of high-frequency pulse after optical and electrical isolation; due to the thermal inertia of the tungsten filament bulb, the light emitted by it cannot follow the frequency change of the PWM as LED does, so even if the tungsten filament bulb is powered by PWM, the light emitted by it is continuous, equivalent to working under a DC power supply, and there is no stroboscopic effect; in order to achieve optical and electrical isolation effect, the input and output ends of the optical isolator are respectively powered by two independent power supplies, one of which is the switching power supply A with isolation, which is common ground with the single-chip microcomputer, and the other of which is the switching power supply B with isolation, which is common ground with the 310V DC high-voltage power supply; the voltage-dependent resistor is a recoverable type used for overvoltage protection to protect the high-voltage electrolytic capacitor.

[0021] The single-chip microcomputer uses a full clock to generate a perpetual calendar, and the full clock will still keep time after the switch shuts off the mains, powered by a clock backup rechargeable battery; the human-lamp interaction module uses a remote controller and a remote control receiving tube to realize function setting, such as setting the illumination and lighting mode, etc.; in addition to using infrared remote control, using "Bluetooth + mobile phone" setting is more flexible; the dip switch is connected with the single-chip microcomputer, used to set the working mode of the desk lamp, such as whether the hardware setting is for reading and writing, or for use in a maternity center, or for generating stroboscopic effect, etc.; hardware setting is simpler and more direct than software setting through a remote controller or a mobile phone, etc.

[0022] The application also provides a dynamic lighting scheme for human-lamp interaction coordination without remote control or Bluetooth communication. The scheme can also minimally realize coordinated dimming of the lamp A and the lamp B, which is a simple and practical preferred mode: one of the lamp A and the lamp B illuminates a book, and the other illuminates a white wall to provide ambient light; the brightness of the table lamp is divided into five grades, that is, the touch key is quickly pressed by hand to realize the cycle of "1-grade on, 1-grade off", "2-grade on, 2-grade off", "3-grade on, 3-grade off", "4-grade on, 4-grade off"; at this time, the lamp A and the lamp B are equivalent to a common table lamp, and each can be independently operated to set a suitable illuminance; since the human eye's perception of illuminance is logarithmic, the uniformity of the illuminance in the field of view can be good enough through visual inspection, and if more stringent, an illuminance meter is required to ensure; the single-chip microcomputer has a memory function, and after the lamp is turned off, as long as it is turned off for more than 10 seconds, the next time the lamp is turned on, the original set brightness data can be read back to ensure that the two lamps return to the brightness state before the lamp is turned off, so that there is no need to adjust the brightness each time; when it is necessary to enter the coordinated work of the two lamps, the touch key is pressed for more than 2 seconds at the set position, and then the lamp A and the lamp B enter the coordinated work state; the basis for coordination is the full clock, and the time starting points of the lamp A and the lamp B are the same, which is set by the calendar at the factory; another synchronization method is that the lamp A and the lamp B are powered on at the same time, and the clock is synchronized during the initialization of the single-chip microcomputer; the light change period is divided into an even number, for example, 4 equal parts, that is, 15 minutes for one light change period; within the 15 minutes, the lamp A and the lamp B will change the illuminance synchronously, for example, within one minute (but not limited to this), the illuminance is reduced to 1 / 10 of the set value, and then returned to the original set brightness within 10 seconds; within the 15 minutes, a stimulating mode of strong light flashing can also be set, for example, within 1 second, the illuminance is doubled, and then returned to the original set value within 0.5 seconds; the purpose of this is to change the pupil size through light change, and then let the eyes return to the precise focusing point, avoiding adjustment laxity; since the time base points of the lamp A and the lamp B are consistent, they can change the light synchronously, regardless of the order of entering the light change state and the speed of operation; if the lamp B is set to illuminate the white wall, the illumination angle and the front and back position can be adjusted, and combined with the brightness setting, the uniformity of the light in the field of view can be ensured; the applicant's light uniformity here is understood as follows: since the human eye's perception of light intensity is logarithmic, even if the maximum light intensity and the minimum light intensity in the field of view differ by 2 times, the human perception only differs by 30%, so it is completely unnecessary to seek perfection in uniformity.

[0023] As can be seen from the above description, for a child room that has been decorated, two table lamps are used to realize synchronous dynamic change of the illuminance of the two lamps for preventing myopia and preventing precocious puberty of children.

[0024] The application also relates to the dynamic change of illumination and color temperature (spectrum) (which is suitable for the new decoration or reconstruction of a child's room); from the uniformity of the light environment, it is not ideal for teenagers to use the above two lamps to read and write. The desk lamps are often mainly used for local illumination when doing fine work, and the limited desktop is squeezed into two desk lamps, which occupies a large space, therefore, for a child's room that has not been decorated, the application advocates that lamp A is used as a ceiling lamp, and lamp B is used as a wall lamp installed on a white wall to replace the above two lamps, at this time, the control of the two lamps is controlled by a remote controller, and the base of the desk lamp is evolved into a control box, since the components are few, the control box can be completely made into a commonly used switch box form; the mode and effect of the synchronous work of the two lamps are similar to the above description; a more flexible way to replace the remote control is to use Bluetooth, that is, the human lamp interaction module contains a Bluetooth module.

[0025] The applicant believes that the current high desktop illumination is the main cause of high myopia rate, and therefore suggests that the desktop illumination be controlled below 50 Lx, and the minimum illumination can be set to 5 Lx; 5 Lx is candle light illumination; and the maximum desktop illumination should be controlled within 100 Lx, which is much lower than the current recommended > 300 Lx illumination standard; this is a significant feature of the application; considering that the high brightness of the incandescent lamp for a long time can greatly shorten the service life; since the service life of the incandescent lamp is related to the color temperature, the higher the color temperature, the shorter the service life of the filament, therefore, when the two lamps are adjusted to the highest brightness, the color temperature should be controlled below 3000K, and the time should not exceed 1 second, so as to maximize the service life of the tungsten bulb; since in the application, the voltage of the high-voltage direct-current power supply is 310V, which is much higher than the rated working voltage 220V of the tungsten bulb, it is completely possible to use PWM to make the color temperature reach 3000K for a short time, such as 1 second, which is higher than the rated working color temperature 2700K of the tungsten bulb, without burning the bulb; but this flash of white light can make the eyes and brain alert and refocus; the application greatly limits the reading and writing illumination by controlling the power of the tungsten bulb, which is significantly lower than the psychological expectation of the public on the illumination, which is also a feature of the application; of course, the application can also coarsely adjust the room illumination by selecting the rated power of the tungsten bulb; the application limits the desktop illumination, but does not limit the brightness of the lamp; if someone needs high illumination, the application can also achieve the purpose by replacing the high-power bulb. In addition, although the lamp control of the teenager's room can also be realized through "Bluetooth + mobile phone", the mobile phone screen is a near strong light, which is harmful, in order to try not to let teenagers have an excuse to play mobile phones, the preferred control mode is the remote controller.

[0026] The application also relates to the dynamic change of illumination and color temperature (spectrum) with the biological clock, which is suitable for configuring light for a confinement center or other phototherapy room, and a ceiling lamp or a wall lamp or a desk lamp composed of adjustable light direct-current incandescent lamps constitutes a dynamic lighting light environment that can strictly imitate candle light:

[0027] The applicant knows that the current society lacks high-quality light sources such as adjustable DC incandescent lamps, and even more lacks DC adjustable electric light sources with a color temperature as low as candlelight; firelight is the most suitable light for humans at night, that is, the healthiest light; humans at night before falling asleep, it is best to fall asleep in a light environment similar to candlelight; the present method can realize the coordinated dimming of lamp A and lamp B according to the human physiological rhythm on the basis of the first two, for example, the color temperature of the two lamps changes from the rated 2700K to the candlelight 1800K; getting up at night to feed milk can also be done at 1800K, thereby minimizing the harm of blue light, not interfering with the physiological rhythm of the mother and child, and also minimizing the impact on sleep after getting up at night; although LED lighting can also achieve this, but its light source is not the true full spectrum of DC incandescent lamp, its light quality and light health can never surpass the adjustable DC incandescent lamp; in addition, the lamp A and the lamp B are selected to be frosted tungsten filament bulbs, and when set to candlelight brightness, the baby can also be allowed to directly look at the light source, which can also help the baby's eye development; the baby's eyes will tend to light, and the eyes must have a focusing target, but the healthy light at night should be like firelight, and the brightness should be prohibited to exceed the candlelight brightness; in addition, incandescent lamps are rich in deep red and near-infrared light, and these bands of light have an irreplaceable role in the development and protection of neurons in the eyes and brain, and humans at night should only use firelight for illumination.

[0028] The control of the color temperature is completed by the switch tube in the form of PWM, which cooperates with the thermal inertia of the incandescent lamp, so that there is no need to worry about flicker, and the candlelight can be completely imitated at 100%; the filament of the tungsten bulb works in an average small current state similar to DC, which can greatly prolong the service life of the incandescent lamp; the switch tube is preferably a MOS power tube, such as the commonly used IRF840.

[0029] The invention content of the present application also relates to a method for producing deep flicker of adjustable DC incandescent lamp, for preventing Alzheimer's disease, that is, how to bypass the thermal inertia of the incandescent lamp and instead produce 100% deep flicker; the flicker depth reflects the difference between the maximum and minimum light intensities measured at the same position, and 100% means that the minimum light intensity is zero, and the flicker depth is an important indicator of the effect of preventing Alzheimer's disease.

[0030] Because the deep red and near-infrared light in the incandescent lamp penetrates deeply in the brain and even has the function of protecting neurons after penetrating through the skull for 8 cm, the use of the incandescent lamp as a health light source will have a better preventive effect, however, the thermal inertia of the incandescent lamp determines that when AC power is used, although there is also a stroboscopic effect, the stroboscopic depth is only about 30%, and even the stroboscopic depth of the iodine-tungsten lamp is less than 10%; since the stroboscopic depth of the LED can easily reach 100%, people will not think of using an AC incandescent lamp to prevent Alzheimer's disease; lamps A and B are controlled by a single-chip microcomputer and use a double-frequency PWM mode, that is, a high-frequency carrier wave is superimposed on the stroboscopic waveform for PWM regulation of brightness; if lamps A and B work at 20 Hz, but their waveforms are 180 degrees out of phase, that is, the waveforms of lamps A and B are staggered, after the two lamps are lit, the resulting waveform has a stroboscopic frequency of 40 Hz; as can be seen from the waveforms of lamps A and B, the filament cooling time is lengthened, so the lamps can be expected not to emit light, thereby making the stroboscopic depth of the resulting waveform reach 100%; if the stroboscopic depth of the resulting waveform of the two lamps does not reach 100%, it is obviously possible to increase the number of bulbs to achieve this;

[0031] If lamps A and B are controlled by a single-chip microcomputer, a two-way light isolation is required, and for newly renovated lighting, this mode is feasible; this mode obviously allows the number of tungsten bulb to be more than two, and through a remote control, the separate control of all tungsten bulbs can be realized, and the effect of dynamic lighting can be achieved, which also includes generating a 100% depth stroboscopic effect, that is, making each tungsten bulb emit light in turn, so that each filament is fully cooled. This method can bypass the thermal inertia of the incandescent lamp, and in principle, when the stroboscopic depth is 100%, the stroboscopic frequency can be easily adjusted to 40-120 Hz (the frequency in this range can treat Alzheimer's disease), that is, the stroboscopic frequency for preventing Alzheimer's disease is adjustable, and can even be dynamically changed.

[0032] The beneficial effects of the present application are:

[0033] ① It is the first time to realize direct-current dimming of a single incandescent lamp, including adjustment of illumination, color temperature, stroboscopic effect and adjustment according to biological clock.

[0034] ② It is the first time to realize synchronous dynamic adjustment of two incandescent lamps, to obtain a full-view light environment that best meets human needs, thereby providing unlimited possibilities for light health applications, especially for adolescent myopia prevention and sexual precocity prevention lighting.

[0035] ④ It provides a candlelight-like lactation light environment for the baby to directly view in a confinement center.

[0036] ⑤ It fully taps the potential of incandescent lamps in preventing Alzheimer's disease, and through dynamic phase shifting, the stroboscopic depth of the incandescent lamp reaches 100%. BRIEF DESCRIPTION OF DRAWINGS

[0037] Fig. 1 It is a schematic diagram of the double-table lamp of the present application.

[0038] Fig. 2 Power supply diagram of the present application.

[0039] Fig. 3 Single-chip control principle diagram.

[0040] Fig. 4 Control waveform diagram.

[0041] Fig. 5 Common single-chip control principle diagram.

[0042] Reference numerals: 1 field of view; 2 switch; 3 tungsten filament bulb; 4 lamp A; 5 lamp B; 6 white wall; 7 light meter; 8 lamp base; 9 remote control receiving tube; 10 touch key; 11 remote controller; 12 full-wave rectifier; 13 high-voltage electrolytic capacitor; 14 voltage-dependent resistor; 15 switch power supply A with isolation; 16 switch power supply B with isolation; 17 clock backup battery; 18 full clock; 19 human-lamp interaction module; 20 single-chip microcomputer; 21 optical isolator; 22 switch tube; 23 fuse; 24 dual-frequency PWM mode; 25 lamp A waveform; 26 lamp B waveform; 27 two-lamp synthesized waveform; 28 dip switch; 29 dual-channel optical isolator. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0044] Embodiment one: a cooperative dynamic lighting method composed of at least two adjustable light direct-current incandescent lamp desk lamps, referring to Figs. 1-3 In order to make the light in the field of view 1 of the teenager uniform when reading and writing, at least two desk lamp light sources, i.e. lamp A 4 and lamp B 5, are used; at this time, the lamp base 8 is a so-called control box; in this embodiment, the two lamps preferentially use tungsten filament bulbs 3, but the dynamic lighting idea of the present embodiment is also suitable for using full-visible-spectrum LED lamps.

[0045] The lamp base 8 of the lamp A4 is provided with a switch 2, a touch key 10, and a luxmeter 7; the touch key 10 is actually a metal sheet closely attached to the plastic insulating part of the inner surface of the lamp base 8, and is used to sense the change of the capacitance when the finger approaches; the touch key 10 is connected with the single-chip microcomputer 20 supporting the touch function; the luxmeter 7 is used to measure and evaluate the illumination and uniformity of the light in the visual field 1, and the main element of the luxmeter 7 is a silicon photocell, which is connected with the A / D conversion port of the single-chip microcomputer 20 through a coaxial shielded wire and a conventional pre-signal processor, and is only inserted into the lamp base 8 when the measurement is needed; the measurement result of the luxmeter 7 is transmitted to the mobile phone through Bluetooth for display; the luxmeter 7 does not exclude the measurement and display mode connected with the remote controller 11, or the measurement and display mode directly connected with the mobile phone, or the detection of the light environment of the embodiment by using the mobile phone light ring mirror probe (containing a spectrometer); the switch 2 is the main switch, which is connected with a fuse 23 and can cut off the power supply to the full-wave rectifier 12, the isolated switching power supply A 15, and the isolated switching power supply B 16; after the power supply is rectified by the full-wave rectifier 12, the high-voltage electrolytic capacitor 13 is used for filtering, and then a DC high voltage of about 310V is obtained for supplying power to the tungsten bulb 3; the rated working voltage of the tungsten bulb 3 is 220V, which cannot directly work under DC at 310V, so the single-chip microcomputer 20 outputs a pulse with a certain duty cycle through the pulse width modulation (PWM) port, and then drives the switching tube 22 to make the tungsten bulb 3 work in the form of high-frequency pulse after photoelectric isolation by the optical isolation 21; due to the thermal inertia of the tungsten bulb 3, the light emitted by the tungsten bulb 3 cannot change with the frequency of the PWM like the LED, so even if the PWM power supply is used, the light emitted by the tungsten bulb 3 is still continuous, like working under DC, and there is no frequency flicker, which is called DC dimming in this application; in order to achieve the effect of photoelectric isolation, the input and output ends of the optical isolation 21 are respectively supplied by two independent power supplies, one is the isolated switching power supply A 15, which is common with the single-chip microcomputer 20, and the other is the isolated switching power supply B 16, which is common with the 310V DC high-voltage power supply; the voltage-dependent resistor 14 is a recoverable type, which is used for overvoltage protection and protection of the high-voltage electrolytic capacitor 13. The single-chip microcomputer 20 is connected with the full clock 18 to generate an eternal calendar, and after the AC power is disconnected, the full clock 18 will still count time, which is supplied by the clock backup rechargeable battery 17; the human-lamp interaction module 19 uses the remote controller 11 and the remote control receiving tube 9 to realize the function setting, such as setting the illumination and setting the lighting mode; in addition to using infrared remote control, the use of Bluetooth technology will be more flexible.

[0046] The embodiment also comprises the following control method, which can realize the coordinated dimming of the lamp A4 and the lamp B5 to the minimum, and is a simple and practical preferred mode: the lamp A4 and the lamp B5 illuminate a book and a white wall 6 respectively to provide ambient light; the brightness of the desk lamp is divided into five grades, that is, the touch key 10 is quickly and lightly touched by hand, and the cycle of "1-grade on, 1-grade off", "2-grade on, 2-grade off", "3-grade on, 3-grade off", and "4-grade on, 4-grade off" can be realized; at this time, the lamp A4 and the lamp B4 are equivalent to a common desk lamp, and each can be independently operated to set a suitable illuminance; since the human eye has a logarithmic relationship with the illuminance, the uniformity of the illuminance in the visual field can be good enough through visual observation, and if more strictly, the illuminometer 7 is required to ensure; after the lamp is turned off, as long as it is waited for more than 10 seconds before the lamp is turned on again, the single-chip microcomputer 20 can read back the original set brightness data, so that the two lamps return to the brightness state before the lamp is turned off, thereby without the need to adjust the brightness each time; when the two lamps need to work coordinately, as long as the touch key 10 is pressed for more than two seconds in a set state, the lamp A4 and the lamp B5 enter the coordinated working state; the basis of the coordination is the full clock 18, and the time starting points of the lamp A4 and the lamp B5 are the same, which is set by the calendar at the factory; another synchronization mode is that the lamp A4 and the lamp B5 are powered on at the same time, and the clock synchronization is realized at the initialization of the single-chip microcomputer 20; one feature of the embodiment is that one hour is divided into an even number of equal parts, such as four equal parts, that is, 15 minutes is one light changing period, and in the 15 minutes, the lamp A4 and the lamp A5 change the illuminance synchronously, for example, but not limited to, the illuminance is reduced to 1 / 10 of the set value within one minute, and then returns to the original set brightness within 10 seconds; within the 15 minutes, the stimulating mode of a flash of strong light can also be set, for example, the illuminance is doubled within 1 second, and then is reduced to the original set value within 0.5 second; the purpose of this is to change the pupil size through the light intensity, and then make the eyes return to the precise focusing point, so as to avoid the adjustment slack; since the time base points of the lamp A4 and the lamp B5 are consistent, they can change the light synchronously, and are irrelevant to the order of entering the light changing state and the speed of operation; if the lamp B5 is set to illuminate the white wall 6, the illuminating angle and the front and back position are obviously adjustable, and combined with the brightness adjustment, the uniformity of the light in the visual field 1 can be ensured; the uniformity here is understood as follows: since the human eye has a logarithmic relationship with the light intensity, even if the maximum light intensity and the minimum light intensity in the visual field 1 differ by 2 times, the human eye only feels a difference of 30%, so it is completely unnecessary to seek perfection in uniformity.

[0047] Embodiment two: a coordinated dynamic lighting method composed of a ceiling lamp and a wall lamp composed of adjustable light direct current incandescent lamps.

[0048] From the uniformity of the light environment, the two lamps are not very scientific for teenagers to read and write, and it is easy to cause the desktop illumination to be too high; in fact, the desk lamp is often mainly used for local fine work lighting, and the reading and writing of teenagers are not fine work, and it is best not to use the desk lamp, and the limited desktop squeezes a desk lamp, occupies a lot of space, therefore, the embodiment advocates lamp A4 as a ceiling type, and lamp B5 as a wall lamp installed on the white wall 6; at this time, the control of the two lamps is controlled by the remote controller 11, and the synchronous mode is similar to embodiment one; the lamp base 8 evolves into a control box of the ceiling lamp and the wall lamp; a more flexible control mode is to use Bluetooth, that is, the human lamp interaction module 19 contains a Bluetooth module, which is controlled by a mobile phone.

[0049] The applicant believes that the current desktop illumination is too high, which is the main reason for the high myopia rate, so the embodiment controls the desktop illumination used frequently below 50Lx, and the minimum illumination is set to 5Lx, which is also the conventional illumination of reading from the previous candle; the maximum desktop illumination is also controlled within 100Lx; considering that the incandescent lamp cannot have high brightness for a long time, otherwise the service life will be greatly shortened; since the color temperature reflects the temperature of the filament, the higher the color temperature, the shorter the service life of the filament, so in this embodiment, when the highest brightness is adjusted, the color temperature is controlled below 3000K, and the time is controlled within 1 second, so as to ensure the service life of the tungsten bulb 3; the maximum illumination also achieves the purpose by selecting and purchasing a tungsten bulb 3 with appropriate rated power; the application sets the upper limit value of the illumination, which is significantly lower than the psychological expectation of the public, which is also a feature of the application.

[0050] Although the embodiment can also be controlled by a mobile phone through Bluetooth, the mobile phone screen is a near-seeing light, in order to avoid teenagers finding excuses to play mobile phones as much as possible, the embodiment preferably adopts a remote control mode. Other similar embodiments one will not be repeated.

[0051] Embodiment three: a cooperative dynamic lighting method of a maternity center or other phototherapy room composed of a ceiling lamp or a wall lamp or a desk lamp composed of an adjustable light direct current incandescent lamp;

[0052] Applicant has been researching "light, precocious puberty, fertility, low desire society" and knows that the current society lacks high-quality light sources such as adjustable DC incandescent lamps, and even more lacks DC adjustable electric light sources with color temperature as low as candlelight; firelight is the most suitable light for humans at night, that is, the healthiest light; before falling asleep at night, humans are best in a light environment similar to candlelight; the present embodiment can realize the coordinated dimming of lamp A4 and lamp B5 according to the human physiological rhythm on the basis of the first two embodiments, such as, but not limited to, the color temperature of the two lamps changes from the rated 2700K to the candlelight 1800K; getting up at night to feed milk can also be done at 1800K, thereby minimizing the harm of blue light, not interfering with the physiological rhythm of mother and child, and not affecting sleep after getting up at night; LED lighting can also achieve this, but its light source is not a DC incandescent lamp, and its light quality and light health can never surpass the adjustable light DC incandescent lamp; in addition, lamp A4 and lamp B5 use frosted tungsten bulb 3, and when set to candlelight illumination, the light is softer than candlelight due to the large light-emitting area after frosting, and the baby can also be appropriately allowed to look at the light source, which can also help the baby's eye development; in addition, incandescent lamps are rich in deep red and near-infrared light, which have irreplaceable effects on the protection of neurons in the baby's brain and eyes.

[0053] Specifically, the switch tube 22 is preferably a MOS power tube, such as the commonly used IRF840, and other similar embodiments one and two, which will not be repeated.

[0054] Embodiment four: method for generating deep stroboscopic light from adjustable light DC incandescent lamp, for preventing senile dementia, see Figs. 1 to 5 .

[0055] Alzheimer's disease is commonly known as "senile dementia", and in 2016, Li-Huei Tsai, a neurologist at MIT, found that preferred 40Hz LED light can prevent "senile dementia", and subsequently received $4 million in financing; the present embodiment describes the invention content for preventing senile dementia, that is, how to bypass the thermal inertia of the incandescent lamp and instead generate 100% deep stroboscopic light; the same incandescent lamp is used, and the previous embodiments prohibit stroboscopic light, but here we want to generate 100% deep stroboscopic light; here, the stroboscopic depth reflects the difference between the maximum and minimum light intensities measured at the same position, and 100% means that the minimum light intensity is zero, and the stroboscopic depth is an important indicator of the effect of preventing senile dementia.

[0056] Since the deep red and near infrared light in the incandescent lamp penetrates deeply in the brain and even has the function of protecting neurons after penetrating through the skull 8 cm, it is expected that the use of incandescent lamp as a health light source should have better preventive effect, however, the thermal inertia of incandescent lamp determines that although there is also flicker when using alternating current, the flicker depth is only about 30%, even less than 10% of the frequency of the iodine tungsten lamp; Since the flicker depth of LED can easily reach 100%, people will not think of using alternating incandescent lamp to prevent Alzheimer's disease; In the embodiment, the lamp A4 and the lamp B5 are controlled by the single-chip microcomputer 20, and a double-frequency PWM mode 24 is adopted, that is, a high frequency is carried on the waveform of the flicker for PWM regulation of brightness; If the lamp A4 and the lamp B5 work at 20Hz, but their waveforms are 180 degrees out of phase, that is, the lamp A waveform 25 and the lamp B waveform 26 are staggered; After the two lamps are lit, the synthesized waveform 27 is obtained, and the flicker frequency becomes 40Hz; As can be seen from the lamp A waveform 25 and the lamp B waveform 26, the filament cooling time is lengthened, so as to not emit light, so that the flicker depth of the synthesized waveform 27 reaches 100%; If the flicker depth of the two lamps synthesized does not reach 100%, obviously the number of bulbs can be increased to achieve it.

[0057] If the lamp A4 and the lamp B5 are controlled by a single-chip microcomputer, a double-path light isolation 29 is required, and for newly renovated lighting, this mode is feasible; This mode can obviously allow the number of tungsten filament bulbs 3 to be more than two, and through the rocker 11, the respective setting of all tungsten filament bulbs 3 can be realized, and the effect of dynamic lighting is achieved, which also includes generating 100% depth of flicker, that is, making each tungsten filament bulb 3 emit light in turn, so that each filament is fully cooled. This method can bypass the thermal inertia of incandescent lamp, so that the flicker frequency can be adjusted between 40-140Hz, the flicker depth is guaranteed to be 100%, and thus an ideal dynamic light source for preventing Alzheimer's disease is obtained.

[0058] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent transformation or direct or indirect application in related technical fields based on the content of the present application and the drawings is also included in the patent protection range of the present application.

Claims

1. A collaborative dynamic lighting method, characterized in that, include: Dynamic lighting fixtures are composed of DC dimmable incandescent lamps A and B; Lamp A and lamp B, with a rated voltage of 220V, operate at a DC voltage of 310V to achieve DC dimming; Lamp A and lamp B, with a rated voltage of 220V, operate at a DC voltage of 310V to achieve DC dimming. This includes: the 310V DC voltage is obtained from the mains power through full-wave rectification, filtered and stored by a high-voltage electrolytic capacitor, and then converted into DC; the microcontroller outputs PWM pulses, which, after passing through an optical isolator, control the switching transistor to make the tungsten filament bulb operate according to the PWM duty cycle set by the microcontroller; the higher the duty cycle, the higher the brightness. Lamp A and lamp B work together to automatically dim according to a program to achieve dynamic lighting; dimming includes adjusting illuminance, color temperature, flicker, or a combination thereof; the automatic dimming of lamps A and B to achieve dynamic lighting includes: lamps A and B working together to generate deep flicker, specifically by having two DC dimmable incandescent lamps alternately pulse, allowing the incandescent lamp filaments to be fully cooled and stop emitting light; thus obtaining an incandescent light source with a flicker depth of 100%; wherein lamps A and B use tungsten filament bulbs as light sources, and lamps A and B... Lamp B's socket or control box is equipped with a switch, a touch key, and a lux meter; the touch key is a thin metal sheet that is in close contact with the plastic insulation on the inner surface of the socket or control box, used to sense changes in capacitance when a finger approaches; the touch key is connected to a microcontroller that supports touch functionality; the switch is the main power switch, which is connected to a fuse and can turn off the mains power to the full-wave rectified, isolated switching power supply A and the isolated switching power supply B; the coordination is based on: lamp A and lamp B being powered on simultaneously, and clock synchronization being achieved during microcontroller initialization.

2. The coordinated dynamic lighting method according to claim 1, characterized in that, A pulse with a certain duty cycle is output from the pulse width modulation (PWM) port of the microcontroller. After being optically and photoelectrically isolated, the pulse drives the switching transistor to make the tungsten filament bulb work in the form of high-frequency pulses. The input and output terminals of the optical isolation device are powered by two independent power supplies, including a switching power supply A that shares a ground with the microcontroller and is isolated from the 310V DC high voltage power supply B.

3. The coordinated dynamic lighting method according to claim 1, characterized in that, By alternately pulse-operating two DC dimmable incandescent lamps, the filaments of the lamps are sufficiently cooled and rendered non-luminous; thus, an incandescent light source with a flicker depth of 100% is obtained, comprising the following steps: Step S1: Let the required flicker frequency be f, and let lamps A and B correspond to light source A and light source B, respectively; Step S2: Make light sources A and B operate at a frequency of f / 2, but in opposite phases, that is, when A is working, the filament of B is cooled, and when B is working, the filament of A is cooled. Step S3: The total illuminance is the average illuminance of the two light sources A and B within one variation period; thus, the flicker frequency of the light environment is f, and the flicker depth is 100%.

4. The collaborative dynamic lighting method according to claim 1, characterized in that: When lamp A and lamp B appear in a combination of table lamp, ceiling lamp, or wall lamp, a remote control is used to achieve coordinated dimming and dynamic lighting.

5. The coordinated dynamic lighting method according to claim 1, characterized in that: Each lamp can be switched on and off individually, and its illuminance and color temperature can be selected individually. The color temperature is set to the color temperature of candlelight, and the tungsten filament bulb uses a glass shell with a frosted effect. The illuminance at a distance of 1 meter is set to less than 1 Lx, forming a light source that closely resembles candlelight and is flicker-free, allowing infants to look directly at the tungsten filament bulb.

6. The coordinated dynamic lighting method according to claim 1 or 4, characterized in that, Under the control of the microcontroller, a dual-frequency PWM mode is adopted, that is, on the flickering waveform, a high frequency is added for PWM brightness adjustment; if the operating frequency of lamp A and lamp B is f, but their waveform phases differ by 180 degrees, that is, the waveforms of lamp A and lamp B are staggered, after the two lamps are lit, a composite waveform is obtained, and the flicker frequency of the composite light is 2f.

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