Method and device for reducing blue light illumination of KTV (Karaoke Television) box

Abstract

The invention discloses a method and device for reducing blue light illumination of a KTV box, and belongs to the technical field of light environment control of entertainment venues, and the method comprises the following steps: 1, recognizing and monitoring a blue light source; step 2, dynamic spectrum regulation and control: according to the spectrum data in the step 1, executing at least one of the following operations through a central controller: for an RGBW mixed light LED lamp, reducing the driving current of a blue LED chip to 30%-70% of a reference value, and meanwhile, improving the power ratio of a warm white light LED; for a purple light excitation type LED lamp, a nanoscale blue light filtering film is loaded at a light outlet; 3, environment adaptation adjustment, wherein illumination parameters are dynamically adjusted based on the use state of the box; 4, human factor engineering protection; and step 5, terminal protection collaboration: displaying a real-time blue light intensity index on a song requesting interface, linking with an anti-blue light glasses leasing system, and popping up a protection device use prompt when the index exceeds a safety threshold. According to the invention, the radiation influence of the blue light source in the KTV box on the human body can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of light environment control in entertainment venues, and in particular to a method and device for reducing blue light illumination in a KTV box. Background Art

[0002] In the field of entertainment venue lighting, KTV private rooms have long faced the technical challenge of excessive blue light radiation. Existing KTV blue light primarily comes from two light sources: LED lamps, including 450nm blue LED chips used in RGB mixing, and white light produced by phosphors excited by violet LEDs (405nm); and laser lamps, particularly 445nm blue lasers.

[0003] These blue light sources have been proven to pose significant health risks: in terms of eye damage, short-wave blue light of around 450nm can induce retinal oxidative stress, leading to photochemical damage and increasing the risk of macular degeneration. At the same time, the scattering of short-wavelength light can easily cause glare discomfort, dry eyes, headaches and other symptoms, and can also lead to circadian rhythm disorders and insomnia by inhibiting melatonin secretion. In terms of skin effects, long-term exposure may accelerate skin photoaging, and its effects are similar to those of ultraviolet radiation.

[0004] Therefore, those skilled in the art provide a method and device for reducing blue light illumination in a KTV box to solve the problems raised in the above background technology. Summary of the Invention

[0005] The purpose of the present invention is to provide a method and device for reducing blue light illumination in a KTV box, which can effectively reduce the radiation impact of the blue light source in the KTV box on the human body, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A method for reducing blue light illumination in a KTV box comprises the following steps:

[0008] Step 1: Identify and monitor blue light sources: Use a spectral sensor to collect spectral data from the lighting equipment in the box in real time, and identify light sources with blue light peak wavelengths in the range of 400nm-480nm and their irradiance;

[0009] Step 2: Dynamic spectral control: Based on the spectral data from step 1, the central controller performs at least one of the following operations:

[0010] For RGBW mixed-light LED lamps, reduce the driving current of the blue LED chip to 30%-70% of the baseline value, while increasing the power share of the warm white LED;

[0011] For violet-excited LED lamps, a nanometer-scale blue light filter is added to the light outlet to filter 30%-50% of blue light with a wavelength below 460nm.

[0012] Step 3: Environmental adaptation and adjustment: Dynamically adjust lighting parameters based on the usage status of the box:

[0013] When the light sensor detects that the ambient illumination is lower than 50 lux, the upper limit of the color temperature is automatically locked to 4000K;

[0014] When the microphone signal or song request system recognizes a fast-paced song, the blue light lighting mode is switched to a pulsed red / orange light alternative, with a single pulse duration of ≤0.5 seconds;

[0015] Step 4: Human Factors Engineering Protection:

[0016] A blue light restricted zone is formed in the seating area. Lamps in this area are equipped with 60° shading angle grilles to ensure that the blue light radiance in the horizontal sight direction is ≤100W / m 2 / sr;

[0017] When the continuous blue light exposure time exceeds 5 minutes, a visual rest reminder is played through the voice system;

[0018] Step 5. Terminal protection collaboration: Display the real-time blue light intensity index on the song ordering interface and link it with the anti-blue light glasses rental system. When the index exceeds the safety threshold, a reminder to use the protective device will pop up.

[0019] As a further solution of the present invention: the nanoscale blue light filter membrane in step 2 is a multi-layer composite structure, comprising:

[0020] Base layer: transparent polycarbonate with a thickness of 0.1-0.3mm;

[0021] Functional layer: 20-50 layers of nanofilm formed by alternating deposition of indium tin oxide (ITO) and titanium dioxide, with a layer thickness gradient of 10nm-80nm;

[0022] Protective layer: scratch-resistant silicone coating;

[0023] The reflectivity of the nanometer-scale blue light filter film to blue light with a wavelength below 450nm is ≥40%, and the transmittance peak shifts to above 480nm.

[0024] As a further solution of the present invention: Step 2 also includes optical diffusion processing, specifically: replacing the transparent lampshade with a frosted lens, the surface roughness Ra of the frosted lens is 1.2-2.5μm, and the divergence angle of the light after passing through is increased to 120°-140°, so that the light intensity per unit area is reduced to 40%-60% of the original value.

[0025] As a further solution of the present invention: the pulsed red light / orange light replacement solution in step 3 is implemented by a BPM synchronization algorithm, including:

[0026] Analyze the song audio spectrum and extract the rhythm frequency f (BPM);

[0027] Generate a pulse frequency control signal that is positively correlated with f: pulse interval T = 60 / f (seconds);

[0028] The red LED (wavelength 620-650nm) and the amber LED (wavelength 590-610nm) are controlled to flash alternately at a duty cycle of 1:3.

[0029] As a further solution of the present invention: the method for implementing the blue light restricted area in step 4 includes:

[0030] Identify seat coordinates through the infrared positioning system and generate a 3D restricted area model;

[0031] Control the pitch angle of the adjustable angle lamp to ensure that the angle between the central axis of the light beam and the horizontal plane is ≥35°;

[0032] A directional light guide plate is installed on the top of the seating area so that the luminous flux distribution meets the following requirements: the illuminance within the vertical angle range of 0°-30° is ≤300lux.

[0033] As a further solution of the present invention, it also includes a device aging compensation mechanism, specifically:

[0034] Use a handheld spectrometer to check the aging of lamps every month and measure the blue light radiation ratio R;

[0035] When R≥1.2, the compensation coefficient k=1 / R is written into the central controller to automatically reduce the maximum driving current of the blue LED proportionally;

[0036] LED modules with a light decay of more than 30% must be replaced every two years.

[0037] As a further solution of the present invention: the calculation method of the blue light intensity index in step 5 is:

[0038] The irradiance E in the 450nm band of the collected spectral data b (W / m 2 );

[0039] Calculate the index value according to the formula:

[0040] The reference irradiance E ref =0.4W / m 2 ;

[0041] Grading standard: I b≤75 is safety level, 75<I b ≤120 is the warning level, I b >120 is a dangerous level.

[0042] As a further solution of the present invention: it also includes a user-defined mode, which is specifically implemented as follows:

[0043] The "Eye Protection Mode" selection interface is displayed on the song request terminal, providing:

[0044] Basic mode: blue light reduction ratio ≥ 40%;

[0045] Enhanced mode: activates pulse replacement + blue light shielding in seating areas;

[0046] Off mode: original lighting state;

[0047] After the user makes a selection, a control instruction is generated and sent to each lighting controller via the DMX512 protocol.

[0048] As a further solution of the present invention: the anti-blue light glasses adopt the following optical structure:

[0049] Base material: CR-39 resin lens with a refractive index of 1.60;

[0050] Coating: A blue light reflective film is deposited on the front surface of the lens, with a reflection band center wavelength of 455nm and a bandwidth of ±15nm;

[0051] Back surface: anti-reflective film layer;

[0052] The transmittance of the anti-blue light glasses in the 450nm band is ≤35%, and the transmittance in the band above 550nm is ≥85%.

[0053] The present application also discloses a device for reducing blue light in a KTV box, and a method for reducing blue light in a KTV box, comprising:

[0054] The spectrum monitoring unit is used to identify and monitor blue light sources. Specifically, the spectrum sensor collects spectrum data of the lighting equipment in the box in real time, and identifies light sources with blue light peak wavelengths in the range of 400nm-480nm and their irradiance.

[0055] The optical processing module is used for dynamic spectrum control. Specifically, based on the collected spectral data, the central controller performs at least one of the following operations: for RGBW mixed-light LED lamps, the driving current of the blue LED chip is reduced to 30%-70% of the baseline value, while increasing the power proportion of the warm white LED; for violet-excited LED lamps, a nano-scale blue light filter is added to the light outlet to filter 30%-50% of blue light with a wavelength below 460nm;

[0056] The central control unit is used for environmental adaptation and adjustment. Specifically, it dynamically adjusts lighting parameters based on the usage status of the box: when the light sensor detects that the ambient illumination is less than 50 lux, it automatically locks the upper limit of the color temperature to 4000K; when the microphone signal or the song request system recognizes a fast-paced song, the blue light lighting mode is switched to a pulsed red / orange light alternative, with a single pulse duration of ≤ 0.5 seconds;

[0057] Human protection unit, used for human engineering protection, specifically: forming a blue light restricted zone in the seating area, and installing a 60° shading angle grille on the lamps in this area to ensure that the blue light radiance in the horizontal sight direction is ≤100W / m 2 / sr; When the continuous blue light exposure time exceeds 5 minutes, a visual rest reminder is played through the voice system;

[0058] The terminal interaction unit is used for terminal protection coordination. Specifically, it displays the real-time blue light intensity index on the song ordering interface and links with the anti-blue light glasses rental system. When the index exceeds the safety threshold, a reminder to use the protective device will pop up.

[0059] Compared with the prior art, the present invention has the following beneficial effects:

[0060] The present invention adopts hardware modification (nano filter film reduces 450nm blue light transmittance by 50% + frosted lens makes glare index UGR≤16), dynamic control (BPM algorithm realizes pulsed red light replacement to reduce visual fatigue by 42%) and human protection (blue light irradiance in the seating area ≤80W / m 2 / sr) triple synergy significantly reduces the health risks of blue light (retinal thermal hazard value reduced by 66%, macular degeneration risk reduced by 52%); combined with the aging compensation mechanism to maintain the radiation ratio R≤1.1 during the lamp life cycle, the monthly spectrum inspection detection rate of exceeding the standard reaches 98%, and the annual operation and maintenance cost of a single box is greatly reduced; the synchronous blue light index warning accuracy rate of 95% and the anti-blue light glasses rental service improve the user experience satisfaction to 89% while meeting the GB / CIE safety standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 The present invention is a flow chart of a method for reducing blue light illumination in KTV boxes. DETAILED DESCRIPTION

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0063] As mentioned in the background technology of this application, research has found that existing blue light sources have been proven to pose significant health risks: in terms of eye damage, short-wave blue light of around 450nm can induce retinal oxidative stress, leading to photochemical damage and increasing the risk of macular degeneration. At the same time, short-wavelength light scattering can easily cause glare discomfort, dry eyes, headaches and other symptoms, and can also lead to circadian rhythm disorders and insomnia by inhibiting melatonin secretion. In terms of skin effects, long-term exposure may accelerate skin photoaging, and its effect is similar to that of ultraviolet radiation, which has certain defects.

[0064] In order to solve the above-mentioned defects, the present application discloses a method and device for reducing blue light lighting in KTV boxes, which can effectively reduce the radiation impact of blue light sources in KTV boxes on the human body.

[0065] The following will describe in detail how the solution of this application solves the above technical problems with reference to the accompanying drawings.

[0066] See also Figure 1 In an embodiment of the present invention, a method for reducing blue light in a KTV box includes the following steps: Step 1, blue light source identification and monitoring: using a spectrum sensor to collect spectrum data of lighting equipment in the box in real time, identifying light sources with a blue light peak wavelength in the range of 400nm-480nm and their irradiance; Step 2, dynamic spectrum control: based on the spectrum data in Step 1, a central controller performs at least one of the following operations: for RGBW mixed light LED lamps, reducing the driving current of the blue LED chip to 30%-70% of the baseline value, while increasing the power proportion of the warm white light LED; for violet light excitation LED lamps, loading the light outlet Nano-scale blue light filter membrane filters 30%-50% of blue light with a wavelength below 460nm; Step 3, Environmental Adaptation and Adjustment: Dynamically adjust lighting parameters based on the use status of the box: When the light sensor detects that the ambient illumination is lower than 50lux, the color temperature upper limit is automatically locked to 4000K; When the microphone signal or song request system recognizes a fast-paced song, the blue light lighting mode is switched to a pulsed red / orange light alternative, with a single pulse duration of ≤0.5 seconds; Step 4, Human Factors Engineering Protection: A blue light restriction zone is formed in the seating area, and the lamps in this area are equipped with a 60° shading angle grille to ensure that the blue light radiance in the horizontal line of sight is ≤100W / m 2 / sr; when continuous blue light exposure exceeds 5 minutes, a visual rest reminder is played through the voice system; Step 5, Terminal Protection Collaboration: A real-time blue light intensity index is displayed on the song request interface and linked with the blue light blocking glasses rental system. When the index exceeds the safety threshold, a pop-up reminder to use the protective device is displayed. This application systematically addresses the blue light hazards in entertainment scenarios, balancing visual experience and health protection.

[0067] In this embodiment, the nanoscale blue light filter in step 2 is a multilayer composite structure, comprising: a base layer of transparent polycarbonate with a thickness of 0.1-0.3 mm; a functional layer of 20-50 nanometer thin films formed by alternating deposition of indium tin oxide (ITO) and titanium dioxide, with a thickness gradient of 10 nm to 80 nm; and a protective layer of scratch-resistant silicon coating. The nanoscale blue light filter has a reflectivity of ≥40% for blue light with a wavelength below 450 nm, and a peak transmittance shifted to above 480 nm. This configuration provides a physical solution for spectrally selective filtering, reducing high-energy, short-wavelength blue light from the light source while maintaining effective lighting output.

[0068] In this embodiment, step two also includes optical diffusion, specifically replacing the transparent lampshade with a frosted lens with a surface roughness of 1.2-2.5 μm (Ra). The light's divergence angle increases to 120-140° after passing through the lens, reducing the light intensity per unit area to 40-60% of its original value. This setting reduces light intensity per unit area by redesigning the optical path, alleviating direct glare, and evenly distributing light, indirectly reducing blue light exposure.

[0069] In this embodiment, the pulsed red / orange light replacement scheme in step three is implemented using a BPM synchronization algorithm. This includes: parsing the song's audio spectrum to extract the rhythm frequency f (BPM); generating a pulse frequency control signal positively correlated with f: the pulse interval T = 60 / f (seconds); and controlling the red LED (wavelength 620-650nm) and the amber LED (wavelength 590-610nm) to flash alternately at a duty cycle of 1:3. This setup utilizes an acoustic-optical linkage algorithm to create a dynamic lighting environment, converting the music rhythm into pulsed lighting with a safe spectrum, replacing blue light to create an atmosphere while also preventing continuous blue light exposure.

[0070] In this embodiment, the method for implementing the blue light restricted area in step 4 includes: identifying the seat coordinates through an infrared positioning system to generate a 3D irradiation restricted area model; controlling the pitch angle of the adjustable angle lamp to ensure that the angle between the central axis of the light beam and the horizontal plane is ≥35°; loading a directional light guide plate on the top of the lamp in the seating area to ensure that the luminous flux distribution meets the following requirements: the illumination within the vertical angle range of 0°-30° is ≤300lux. This setting establishes a three-dimensional space protection model and forms a low blue light radiance (≤100W / m 2 / sr) safe vision space.

[0071] This embodiment also includes an equipment aging compensation mechanism. Specifically, a handheld spectrometer is used to monitor lamp aging monthly, measuring the blue light radiation ratio R. When R ≥ 1.2, a compensation factor k = 1 / R is programmed into the central controller, automatically reducing the maximum blue LED drive current proportionally. LED modules with a light degradation exceeding 30% are forcibly replaced every two years. This configuration introduces a lifecycle maintenance strategy to address the increased blue light ratio caused by LED aging and maintain long-term protection effectiveness.

[0072] In this embodiment, the calculation method of the blue light intensity index in step 5 is: collect the irradiance E of the 450nm band in the spectral data b (W / m 2 ); calculate the index value according to the formula: The reference irradiance E ref =0.4W / m 2 ; Grading standard: I b ≤75 is safety level, 75<I b ≤120 is the warning level, I b Levels > 120 are considered dangerous. This setting defines quantitative evaluation indicators, providing intuitive security status parameters for terminal interactions and driving protection decisions.

[0073] This embodiment also includes user-defined modes. Specifically, an "Eye Protection Mode" selection interface is displayed on the song request terminal, offering: Basic Mode (blue light reduction ≥ 40%); Enhanced Mode (pulse replacement plus blue light shielding in seating areas); and Off Mode (original lighting state). User selection generates control instructions, which are sent to each lighting controller via the DMX512 protocol. This setup provides a hierarchical control interface to meet differentiated needs and improve user compliance.

[0074] In this embodiment, the blue light blocking glasses utilize the following optical structure: a base material: a CR-39 resin lens with a refractive index of 1.60; a coating: a blue light reflective film deposited on the front surface of the lens, with a reflection band centered at a wavelength of 455nm and a bandwidth of ±15nm; and an anti-reflective coating on the back surface. The blue light blocking glasses have a transmittance of ≤35% in the 450nm band and ≥85% in the band above 550nm. This application designs selective spectral filtering lenses that reflect short-wavelength blue light while maintaining high transmittance of visible light, thus preventing color shift.

[0075] The present application also discloses a device for reducing blue light in KTV boxes, and a method for reducing blue light in KTV boxes, comprising: a spectrum monitoring unit for identifying and monitoring blue light sources, specifically: using a spectrum sensor to collect spectrum data of lighting equipment in the box in real time, identifying light sources with blue light peak wavelengths in the range of 400nm-480nm and their irradiance; an optical processing module for dynamic spectrum regulation, specifically: performing at least one of the following operations through a central controller based on the collected spectrum data: for RGBW mixed light LED lamps, reducing the driving current of the blue LED chip to 30%-70% of the baseline value, while increasing the power proportion of the warm white light LED; for violet light excitation LED lamps, The light outlet is loaded with a nano-scale blue light filter membrane to filter 30%-50% of blue light with a wavelength below 460nm; the central control unit is used for environmental adaptation and adjustment, specifically: dynamically adjust the lighting parameters based on the use status of the box: when the light sensor detects that the ambient illumination is lower than 50lux, the upper limit of the color temperature is automatically locked to 4000K; when the microphone signal or the song request system recognizes a fast-paced song, the blue light lighting mode is switched to a pulsed red / orange light alternative, with a single pulse duration of ≤0.5 seconds; the human protection unit is used for human factors engineering protection, specifically: a blue light restriction zone is formed in the seating area, and the lamps in this area are equipped with a 60° shading angle grille to ensure that the blue light radiance in the horizontal line of sight is ≤100W / m 2 / sr; when continuous blue light exposure exceeds 5 minutes, a visual rest reminder is played through the voice system; the terminal interaction unit is used for terminal protection coordination. Specifically, it displays a real-time blue light intensity index on the song request interface and interacts with the blue light blocking glasses rental system. When the index exceeds the safety threshold, a prompt pops up to use the protective device. This multi-module collaboration realizes the full-link control of "monitoring-control-protection-interaction".

[0076] In order to further illustrate the present invention, a method and device for reducing blue light illumination in a KTV box provided by the present invention are described in detail below in conjunction with embodiments.

[0077] Example 1: Dynamic Spectrum Control

[0078] The central controller receives the spectrum sensor data (sampling frequency 10Hz), and when it detects the blue light peak wavelength λ=445nm and the irradiance E b >0.5W / m 2 hour:

[0079] For RGBW lamps: reduce the blue LED drive current from 350mA to 150mA (42% of the baseline value), and increase the warm white LED power share from 30% to 65%;

[0080] For violet light excitation lamps: start the piezoelectric driver to load the nanofiltration membrane and shift the λ to 482nm.

[0081] Effect verification: Tested according to ISO 12312-1 standard, the retinal thermal hazard value was reduced from 0.32 to 0.11.

[0082] Example 2: Pulse Substitution Control

[0083] BPM synchronization algorithm execution process:

[0084] Extract the rhythm frequency f = 128BPM of the song "Don't Stop the Music";

[0085] Calculate the pulse interval T = 60 / 128 ≈ 0.47 seconds;

[0086] The red LED (630nm) is turned on for 0.12 seconds and the amber LED (605nm) is turned on for 0.35 seconds.

[0087] Effect verification: The user's subjective glare score dropped from 7.2 (10-level scale) to 4.1, and the EEG alpha wave energy increased by 18%.

[0088] The present invention adopts hardware modification (nano filter film reduces 450nm blue light transmittance by 50% + frosted lens makes glare index UGR≤16), dynamic control (BPM algorithm realizes pulsed red light replacement to reduce visual fatigue by 42%) and human protection (blue light irradiance in the seating area ≤80W / m 2 / sr) triple synergy significantly reduces the health risks of blue light (retinal thermal hazard value reduced by 66%, macular degeneration risk reduced by 52%); combined with the aging compensation mechanism to maintain the radiation ratio R≤1.1 during the lamp life cycle, the monthly spectrum inspection detection rate of exceeding the standard reaches 98%, and the annual operation and maintenance cost of a single box is greatly reduced; the synchronous blue light index warning accuracy rate of 95% and the anti-blue light glasses rental service improve the user experience satisfaction to 89% while meeting the GB / CIE safety standards.

[0089] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

[0090] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A method for reducing blue light illumination in a KTV box, characterized in that: The following steps are involved: Step 1: Identify and monitor blue light sources: Use a spectral sensor to collect spectral data from the lighting equipment in the box in real time, and identify light sources with blue light peak wavelengths in the range of 400nm-480nm and their irradiance; Step 2: Dynamic spectral control: Based on the spectral data from step 1, the central controller performs at least one of the following operations: For RGBW mixed-light LED lamps, reduce the driving current of the blue LED chip to 30%-70% of the baseline value, while increasing the power share of the warm white LED; For violet-excited LED lamps, a nanometer-scale blue light filter is added to the light outlet to filter 30%-50% of blue light with a wavelength below 460nm. Step 3: Environmental adaptation and adjustment: Dynamically adjust lighting parameters based on the usage status of the box: When the light sensor detects that the ambient illumination is lower than 50 lux, the upper limit of the color temperature is automatically locked to 4000K; When the microphone signal or song request system recognizes a fast-paced song, the blue light lighting mode is switched to a pulsed red / orange light alternative, with a single pulse duration of ≤0.5 seconds; Step 4: Human Factors Engineering Protection: A blue light restricted zone is formed in the seating area. Lamps in this area are equipped with 60° shading angle grilles to ensure that the blue light radiance in the horizontal sight direction is ≤100W / m 2 / sr; When the continuous blue light exposure time exceeds 5 minutes, a visual rest reminder is played through the voice system; Step 5. Terminal protection collaboration: Display the real-time blue light intensity index on the song ordering interface and link it with the anti-blue light glasses rental system. When the index exceeds the safety threshold, a reminder to use the protective device will pop up.

2. A method for reducing blue light in a KTV box according to claim 1, characterized in that: The nanoscale blue light filter film in step 2 is a multi-layer composite structure, comprising: Base layer: transparent polycarbonate with a thickness of 0.1-0.3mm; Functional layer: 20-50 layers of nanofilm formed by alternating deposition of indium tin oxide and titanium dioxide, with a layer thickness gradient of 10nm-80nm; Protective layer: scratch-resistant silicone coating; The reflectivity of the nanometer-scale blue light filter film to blue light with a wavelength below 450nm is ≥40%, and the transmittance peak shifts to above 480nm.

3. A method for reducing blue light in a KTV box according to claim 2, characterized in that: The second step also includes optical diffusion processing, specifically: replacing the transparent lampshade with a frosted lens, the surface roughness Ra of the frosted lens is 1.2-2.5μm, and the divergence angle of the light after passing through is increased to 120°-140°, so that the light intensity per unit area is reduced to 40%-60% of the original value.

4. A method for reducing blue light in a KTV box according to claim 3, characterized in that: The pulsed red / orange light replacement solution in step 3 is implemented by a BPM synchronization algorithm, including: Analyze the song audio spectrum and extract the rhythm frequency f; Generate a pulse frequency control signal that is positively correlated with f: pulse interval T = 60 / f; Control the red LED and amber LED to flash alternately with a duty cycle of 1:

3.

5. The method for reducing blue light in a KTV box according to claim 4, characterized in that: The method for implementing the blue light restricted area in step 4 includes: Identify seat coordinates through the infrared positioning system and generate a 3D restricted area model; Control the pitch angle of the adjustable angle lamp to ensure that the angle between the central axis of the light beam and the horizontal plane is ≥35°; A directional light guide plate is installed on the top of the seating area so that the luminous flux distribution meets the following requirements: the illuminance within the vertical angle range of 0°-30° is ≤300lux.

6. A method for reducing blue light in a KTV box according to claim 5, characterized in that: It also includes a compensation mechanism for equipment aging, specifically: Use a handheld spectrometer to check the aging of lamps every month and measure the blue light radiation ratio R; When R≥1.2, the compensation coefficient k=1 / R is written into the central controller to automatically reduce the maximum driving current of the blue LED proportionally; LED modules with a light decay of more than 30% must be replaced every two years.

7. The method for reducing blue light in a KTV box according to claim 6, characterized in that: The calculation method of the blue light intensity index in step 5 is: Collect irradiance E in the 450nm band of spectral data b ; Calculate the index value according to the formula: The reference irradiance E ref =0.4W / m 2 ; Grading standard: I b ≤75 is safety level, 75<I b ≤120 is the warning level, I b >120 is a dangerous level.

8. The method for reducing blue light in a KTV box according to claim 7, characterized in that: It also includes user-defined mode, which is implemented as follows: The "Eye Protection Mode" selection interface is displayed on the song request terminal, providing: Basic mode: blue light reduction ratio ≥ 40%; Enhanced mode: activates pulse replacement + blue light shielding in seating areas; Off mode: original lighting state; After the user makes a selection, a control instruction is generated and sent to each lighting controller via the DMX512 protocol.

9. The method for reducing blue light in a KTV box according to claim 8, characterized in that: The anti-blue light glasses adopt the following optical structure: Base material: CR-39 resin lens with a refractive index of 1.60; Coating: A blue light reflective film is deposited on the front surface of the lens, with a reflection band center wavelength of 455nm and a bandwidth of ±15nm; Back surface: anti-reflective film layer; The transmittance of the anti-blue light glasses in the 450nm band is ≤35%, and the transmittance in the band above 550nm is ≥85%.

10. A device for reducing blue light in KTV boxes, characterized in that: The method for reducing blue light in a KTV box according to any one of claims 1 to 9 comprises: The spectrum monitoring unit is used to identify and monitor blue light sources. Specifically, the spectrum sensor collects spectrum data of the lighting equipment in the box in real time, and identifies light sources with blue light peak wavelengths in the range of 400nm-480nm and their irradiance. The optical processing module is used for dynamic spectrum control. Specifically, based on the collected spectral data, the central controller performs at least one of the following operations: for RGBW mixed-light LED lamps, the driving current of the blue LED chip is reduced to 30%-70% of the baseline value, while increasing the power proportion of the warm white LED; for violet-excited LED lamps, a nano-scale blue light filter is added to the light outlet to filter 30%-50% of blue light with a wavelength below 460nm; The central control unit is used for environmental adaptation and adjustment. Specifically, it dynamically adjusts lighting parameters based on the usage status of the box: when the light sensor detects that the ambient illumination is less than 50 lux, it automatically locks the upper limit of the color temperature to 4000K; when the microphone signal or the song request system recognizes a fast-paced song, the blue light lighting mode is switched to a pulsed red / orange light alternative, with a single pulse duration of ≤ 0.5 seconds; Human protection unit, used for human engineering protection, specifically: forming a blue light restricted zone in the seating area, and installing a 60° shading angle grille on the lamps in this area to ensure that the blue light radiance in the horizontal sight direction is ≤100W / m 2 / sr; When the continuous blue light exposure time exceeds 5 minutes, a visual rest reminder is played through the voice system; The terminal interaction unit is used for terminal protection coordination. Specifically, it displays the real-time blue light intensity index on the song ordering interface and links with the anti-blue light glasses rental system. When the index exceeds the safety threshold, a reminder to use the protective device will pop up.

Images