Lighting device with function of promoting calcium absorption of human body

Abstract

The application provides a lighting device with the function of promoting calcium absorption of human body, which is provided with a lamp body, the lamp body comprises a lamp tube and a lamp head assembly, a limiting support assembly and a lampwick assembly are arranged in the lamp tube, the limiting support assembly and the lampwick assembly are fixedly connected, the inside of the lampwick assembly is a sealed structure, the inside of the lampwick assembly is filled with a mixed medium of solid metal halide, liquid metal, inert gas and ignition gas, when the lighting device operates, arc discharge is formed between the positive electrode guide rod and the negative electrode guide rod, the mixed medium filled in the inside of the lampwick assembly is ionized and broken down, thereby continuously releasing UVB full-waveband light of 280nm-315nm, finally, the lighting device can meet daily lighting demand and solve the technical problem of vitamin D deficiency of human body due to insufficient sunlight and influence on calcium absorption, and the application can be widely applied to indoor lighting and promoting calcium absorption of human body.

Description

Technical Field

[0001] This invention relates to a lighting device, and more particularly to a lighting device that promotes calcium absorption in the human body. Background Technology

[0003] With the acceleration of urbanization, people spend significantly more time indoors, and the problem of insufficient sun exposure leading to reduced vitamin D synthesis in the skin is becoming increasingly prominent.

[0004] Vitamin D is a key medium for calcium absorption. Its deficiency can directly lead to calcium absorption disorders, thereby increasing the risk of osteoporosis, fractures and other diseases, especially affecting the health of the elderly, infants and young children and people who sit for long periods of time at office. At present, traditional fluorescent lamps, LED lamps and other lighting lamps emit almost no UVB light, which is difficult to meet the spectral requirements of the skin to synthesize vitamin D. Although UVB in natural sunlight can promote vitamin D synthesis, outdoor sunlight is limited by time, weather and geographical location, and excessive UVB exposure can cause skin damage.

[0005] Patent application number 2023800100736 discloses a lighting device for generating safe UV radiation to produce vitamin D. However, the LED beads can only emit UV spectrum light with a peak wavelength of 303nm. However, different groups of people (such as the elderly, infants, and people of different skin colors) have different skin thicknesses and melanin contents, resulting in significant differences in their ability to absorb UVB wavelengths. For example, melanin absorbs short-wave UVB (280nm-300nm) more strongly, while people with lighter skin tones respond more significantly to long-wave UVB (300nm-315nm). The single 303nm band obviously cannot take into account these differences and cannot achieve the effect of covering the entire UVB band of 280nm-315nm like sunlight. Therefore, it is obviously insufficient in promoting the synthesis of vitamin D in the human body.

[0006] Therefore, there is an urgent need for a lighting device that can meet daily lighting needs and emit UVB light across the entire wavelength range of 280nm-315nm to address the technical problem of vitamin D deficiency caused by insufficient sunlight. Summary of the Invention

[0008] To address the above-mentioned technical problems, this invention provides a lighting device that promotes calcium absorption in the human body. This lighting device can meet daily lighting needs and emit UVB light across the entire wavelength range of 280nm-315nm, thus solving the technical problem of vitamin D deficiency caused by insufficient sunlight, which affects calcium absorption.

[0009] Therefore, the technical solution of the present invention is a lighting device with the function of promoting calcium absorption in the human body, which is provided with a lamp body, the lamp body including a lamp tube and a lamp head assembly, the lamp tube and the lamp head assembly being fixedly connected, the inside of the lamp tube being a sealed structure, and the inside of the lamp tube being provided with a limiting bracket assembly and a lamp core assembly, the limiting bracket assembly and the lamp core assembly being fixedly connected. The limiting bracket assembly includes a positive electrode support guide rod and a negative electrode support guide rod. The interior of the lamp core assembly is a sealed structure. The positive electrode guide rod and the negative electrode guide rod are fixedly installed at both ends inside the lamp core assembly. One end of the positive electrode guide rod and the negative electrode guide rod are respectively connected to the interior of the lamp core assembly, and the other end of the positive electrode guide rod and the negative electrode guide rod are respectively fixedly connected to one end of the positive electrode support guide rod and the negative electrode support guide rod. The lamp holder assembly includes a lamp holder housing, inside which are a positive electrode pin and a negative electrode pin. The other ends of the positive electrode support rod and the negative electrode support rod are fixedly connected to one end of the positive electrode pin and the negative electrode pin, respectively. The other ends of the positive electrode pin and the negative electrode pin are located outside the lamp holder housing. A power-carrying circuit is formed between the positive electrode pin, the positive electrode support rod, the positive electrode rod, the negative electrode rod, the negative electrode support rod, and the negative electrode pin. The lamp core assembly is filled with a mixed medium of solid metal halide, liquid metal, inert gas and ignition gas. When the lighting device is running, an arc discharge is formed between the positive and negative electrode rods, which ionizes and breaks down the mixed medium filled inside the lamp core assembly, thereby continuously releasing UVB light in the 280nm-315nm band.

[0010] Preferably, the lamp wick assembly is longitudinally arranged in the middle position inside the lamp tube, the positive electrode support rod is located on the side of the lamp wick assembly, the negative electrode support rod is located at the lower end of the lamp wick assembly, and the positive electrode support rod and the negative electrode support rod are respectively longitudinally arranged inside the lamp tube; The lamp wick assembly includes a gas discharge tube. The upper and lower ends of the gas discharge tube are respectively fixed with an upper connecting post and a lower connecting post. The positive electrode rod and the negative electrode rod are respectively fixed inside the upper and lower connecting posts. The inner sides of the positive electrode rod and the negative electrode rod are located on the upper and lower sides inside the gas discharge tube, respectively. The outer sides of the positive electrode rod and the negative electrode rod are fixedly connected to the upper ends of the positive electrode support rod and the negative electrode support rod, respectively. The solid metal halide, liquid metal, inert gas, and ignition gas are all located inside the gas discharge tube.

[0011] Preferably, the solid metal halide is a mixture of sodium iodide, scandium iodide, dysprosium iodide, and thallium iodide.

[0012] Preferably, the amount of sodium iodide is 20%-35% of the total mass of solid metal halides, the amount of scandium iodide is 15%-30% of the total mass of solid metal halides, the amount of dysprosium iodide is 10%-25% of the total mass of solid metal halides, and the amount of thallium iodide is 5%-20% of the total mass of solid metal halides.

[0013] Preferably, the liquid metal is liquid mercury.

[0014] Preferably, the amount of liquid mercury is 10%-15% of the total mass of the solid metal halide and the liquid metal.

[0015] Preferably, based on the total volume of the gas discharge tube, the filling volume of the inert gas is 10%-45% of the total volume of the gas discharge tube, and the filling volume of the ignition gas is 1%-3% of the total volume of the gas discharge tube.

[0016] Preferably, the filling pressure of the inert gas and the ignition gas is 0.11 atm-0.45 atm.

[0017] Preferably, the inert gas is argon or krypton; the ignition gas is xenon or hydrogen.

[0018] Preferably, the lighting device further includes a lampshade assembly, which includes a lampshade housing and a reflector. The reflector is fixedly disposed inside the lampshade housing. A lamp holder is fixedly disposed at the middle of the bottom end of the inner side of the lampshade housing. An clearance hole is provided on the reflector at the position of the lamp holder. The lamp head assembly can pass through the clearance hole and be fixedly connected to the lamp holder to achieve mutual conduction. The lampshade housing includes a rear fixing plate, a front fixing cover, and an annular light-shielding frame. The lamp holder and reflector are fixedly connected to the rear fixing plate. The annular light-shielding frame is located at the front circumference of the front fixing cover and has a front panel. The width of the annular light-shielding frame is 2cm-3cm. The reflector has a semi-circular parabolic structure with a hemispherical protrusion on its inner surface. The inner surface of the reflector has a titanium dioxide coating. The lamp holder and lamp head assembly are fixed together by snap-fit ​​fasteners, as are the rear fixing plate and the front fixing cover. An electronic ballast is fixed inside the lampshade housing. The lampshade housing is made of metal, and the front panel is made of tempered glass with a frosted surface.

[0019] The beneficial effects of this invention are: 1. By filling a gas discharge tube with a mixture of solid metal halides, liquid metal, inert gas, and ignition gas in a specific ratio, a lighting device can meet daily lighting needs while releasing UVB light across the entire 280nm-315nm wavelength band and the visible light spectrum. This solves the technical problem of vitamin D deficiency caused by insufficient sunlight, which affects calcium absorption. The solid metal halide is a mixture of sodium iodide, scandium iodide, dysprosium iodide, and thallium iodide. Sodium iodide accounts for 20%-35% of the total mass of the solid metal halide, and scandium iodide accounts for 15%. The dysprosium iodide content is 10%-30% of the total mass of solid metal halides, and the thallium iodide content is 5%-20% of the total mass of solid metal halides. Furthermore, the total mass percentage of the above four components is 100%. Sodium iodide, as the core component providing visible light output, ensures the brightness and color rendering of everyday lighting, achieving a color rendering index Ra≥90. Simultaneously, it assists in forming the basic spectrum of the UVB band and stabilizes the arc discharge state. Scandium iodide provides the characteristic spectral lines of short-wave UVB in the 280nm-300nm range, filling the short-wave range of the entire wavelength band, and forming a classic Scandium spectral density (Sc) with sodium iodide. The Na-based lighting system significantly improves arc stability and avoids spectral drift. The dysprosium iodide filling ratio covers the entire 280-315nm range, filling spectral gaps and upgrading UVB from discrete lines to a continuous full-band spectrum, greatly improving visible light color rendering and meeting indoor lighting needs. The thallium iodide filling ratio precisely supplements the 300nm-315nm long-wavelength UVB output, achieving gap-free full-band coverage. Furthermore, it reduces the discharge start-up voltage, suppresses the self-absorption of sodium spectral lines, and ensures long-term stability of the spectral output. Liquid mercury is chosen as the liquid metal because it is easy to fill in precise quantities. Its vaporization rate is well-suited for discharge startup. Furthermore, after the lamp discharges and generates heat, it can quickly vaporize to form mercury vapor, which simultaneously forms plasma with metal halide vapor. This avoids the startup delay caused by the slow vaporization of solid materials, meeting the immediate on-demand requirements of indoor lighting. Moreover, since the discharge plasma density of pure metal halide vapor is prone to fluctuations, causing UVB intensity to be unstable and fluctuate, mercury vapor has a moderate ionization energy, which can stabilize the ion concentration of the plasma, ensuring that the discharge process is always in a stable state of high-voltage arc discharge, and ensuring that the UVB radiation intensity of 280nm-315nm remains stable at 0.02-0.The 0.05mW / cm² intensity range meets the requirements for vitamin D synthesis and complies with international safety standards, preventing skin damage. Mercury is gaseous during lamp operation and rapidly condenses into a liquid upon extinguishing as the temperature decreases, flowing back to the bottom of the gas discharge tube 301. It exhibits no volatilization or loss and can repeatedly participate in discharge throughout the lamp's lifespan, ensuring consistent UVB emission performance after each start-up. Argon or krypton is chosen as the inert gas based on their excellent chemical inertness and compatible discharge characteristics. These gases play a crucial role in buffering and stabilizing the arc, protecting electrodes, and regulating electrical performance. Both can form a stable plasma atmosphere within a filling pressure range of 0.11atm-0.45atm and a power range of 30-100W, suppressing abnormalities such as arc contraction and current fluctuations, ensuring a stable vaporization ratio of metal halides and mercury, thereby achieving long-term stable output of UVB light across the entire 280nm-315nm band. Simultaneously, their chemical inertness prevents reaction with components such as the cavity and electrodes. This invention reduces electrode sputtering losses, extends lamp life, and features low thermal conductivity, no harmful spectral interference, and can be used with liquid mercury to lower the start-up and operating voltage of the discharge system, making it compatible with a wide voltage range of 110-220V. Argon is inexpensive and offers balanced performance, making it suitable for mass-production household applications, while krypton has lower ionization energy and better electrode protection, making it suitable for low-temperature environments and high-end applications. Both can be flexibly selected based on actual needs, and both meet the dual core requirements of this invention: household lighting and calcium absorption promotion. The ignition gas is xenon. The choice of xenon or hydrogen is based on their extremely low ionization energy, addressing the pain points of high cold-state start-up voltage and delayed start-up in solid metal halide and liquid mercury systems. With a filling ratio of 1%-3%, both can be ionized and broken down first in a cold, low-voltage electric field, forming an initial glow discharge and heating the cavity. This promotes rapid vaporization of mercury and metal halides, smoothly transitioning to a stable high-voltage arc discharge, fulfilling the "instant-on" requirement for household lighting. Furthermore, once the lamp is operating stably, it does not interfere with the main arc discharge or UVB core spectrum output, producing no harmful radiation or decomposition products, meeting household safety standards. Xenon exhibits extremely high chemical stability, is consumable throughout its lifecycle, has a fast ignition speed, and consistent start-up performance over a long period, making it suitable for high-end household applications. Hydrogen has lower mass production costs, good molecular diffusion, excellent start-up consistency, and can adsorb residual impurities in the cavity, further improving lamp stability, making it suitable for large-scale, affordable household applications. The selection of either gas balances ignition performance, safety, and industrial compatibility, also aligning with the technical solution and application requirements of this invention.

[0020] 2. Because the reflector 502 has a semi-circular parabolic structure, the focal point of the reflector 502 coincides with the center of the lamp body 6, maximizing the concentrated reflection of UVB light, achieving a utilization rate of over 85%, and an illumination uniformity error of ≤10%. The inner surface of the reflector 502 is provided with a hemispherical protrusion. The core function of this protrusion is to change the light propagation path through physical structure based on the concentrated reflection of light by the parabolic reflector 502, forming a controllable diffuse reflection effect. This solves the problem of localized UV light distortion caused by concentrated reflection of parabolic surfaces. This invention addresses the issues of excessive UVB intensity and visible light glare, while also improving the effective coverage and utilization efficiency of UVB light, ultimately ensuring that the UVB uniformity error in the irradiated area is ≤10%. Simultaneously, it optimizes the visual comfort of indoor lighting. All these functions revolve around the dual core needs of "lighting + health" for this invention's lamp. Without the protrusion, the directional reflection of its pure parabolic surface would cause the light to be highly concentrated in a localized area, resulting in the UVB radiation intensity in that area exceeding the safe range of 0.02-0.05 mW / cm². Long-term exposure can easily cause skin redness, itching, and other damage.

[0021] 3. An electronic ballast 505 is fixed inside the lamp housing 501. This electronic ballast supports continuous adjustment of power from 30-100W. By adjusting the output power, the discharge intensity inside the lamp can be precisely controlled, thereby linearly fine-tuning the UVB radiation intensity of 280nm-315nm and always locking it within the safe and effective range of 0.02-0.05mW / cm². For example, the elderly can choose a higher power to increase the UVB irradiation intensity, while infants and young children can choose a lower power to reduce the irradiation dose. This not only meets the vitamin D synthesis needs of different groups of people, but also eliminates the risk of skin damage caused by excessive UVB intensity from the electrical source, ensuring the stable operation of the lamp. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the lamp body in this invention; Figure 2 This is a structural diagram of the limiting bracket assembly in this invention; Figure 3 This is a structural diagram of the lamp wick assembly in this invention; Figure 4 This is a perspective view of the lamp body and lampshade assembly in this invention; Figure 5 This is an assembly plan view of the lamp body and lampshade assembly in this invention; Figure 6 This is the present invention. Figure 3 Sectional view of AA.

[0024] Explanation of symbols in the diagram: 1. Lamp tube; 2. Limiting bracket assembly; 201. Positive electrode support guide rod; 202. Negative electrode support guide rod; 203. Degassing agent; 204. Positive electrode extension guide rod; 205. Negative electrode extension guide rod; 206. Insulating sleeve; 3. Lamp wick assembly; 301. Gas discharge tube; 302. Upper connecting post; 303. Positive electrode guide rod; 304. Negative electrode guide rod; 305. Lower connecting post; 4. Lamp holder assembly; 4 01. Lamp holder housing; 402. Positive terminal pin; 403. Negative terminal pin; 5. Lamp cover assembly; 501. Lamp cover housing; 50101. Rear end fixing plate of lamp cover housing; 50102. Front end fixing cover of lamp cover housing; 502. Reflector; 50201. Clearance hole; 503. Lamp holder; 504. Front panel of lamp cover; 505. Electronic ballast; 506. Circular light-shielding frame; 6. Lamp body. Detailed Implementation

[0026] The present invention will be further described below with reference to embodiments.

[0027] pass Figures 1-6As can be seen, this lighting device with the function of promoting calcium absorption in the human body has a lamp body 6, which includes a lamp tube 1 and a lamp head assembly 4. The lamp tube 1 and the lamp head assembly 4 are fixedly connected. The inside of the lamp tube 1 is a sealed structure. The inside of the lamp tube 1 is provided with a limiting bracket assembly 2 and a lamp wick assembly 3, which are fixedly connected to each other. The limiting bracket assembly 2 includes a positive electrode support guide rod 201 and a negative electrode support guide rod 202. The inside of the lamp wick assembly 3 is a sealed structure. Positive electrode guide rods 303 and negative electrode guide rods 304 are fixedly provided at both ends inside the lamp wick assembly 3. One end of the positive electrode guide rods 303 and 304 are respectively connected to the inside of the lamp wick assembly 3, and the other end of the positive electrode guide rods 303 and 304 are respectively fixedly connected to one end of the positive electrode support guide rods 201 and 202. The lamp head assembly 4 includes a lamp head housing 401. The inside of the lamp head housing 401 is provided with a positive electrode pin 402 and a negative electrode pin 403. The other ends of the positive electrode support rod 201 and the negative electrode support rod 202 are fixedly connected to one end of the positive electrode pin 402 and the negative electrode pin 403, respectively. The other ends of the positive electrode pin 402 and the negative electrode pin 403 are located outside the lamp holder housing 401. A power circuit is formed between the positive electrode pin 402, the positive electrode support rod 201, the positive electrode rod 303, the negative electrode rod 304, the negative electrode support rod 202, and the negative electrode pin 403. The interior of the lamp core assembly 3 is filled with a mixed medium of solid metal halide, liquid metal, inert gas, and ignition gas. When the lighting device is running, an arc discharge is formed between the positive electrode rod 303 and the negative electrode rod 304, which ionizes and breaks down the mixed medium filled inside the lamp core assembly 3. This lighting device can meet the daily lighting needs and continuously and stably release UVB light of the 280nm-315nm full band and visible light spectrum, solving the technical problem of vitamin D deficiency caused by insufficient sunlight.

[0028] In one specific embodiment, the lamp wick assembly 3 is longitudinally disposed in the middle position inside the lamp tube 1, the positive electrode support guide rod 201 is located on the side of the lamp wick assembly 3, and the negative electrode support guide rod 202 is located at the lower end of the lamp wick assembly 3. The positive electrode support guide rod 201 and the negative electrode support guide rod 202 are respectively longitudinally disposed inside the lamp tube 1. The lamp wick assembly 3 includes a gas discharge tube 301, which is a hollow structure. The upper end connecting post 302 and the lower end connecting post 305 are fixedly provided at the upper and lower ends of the gas discharge tube 301, respectively. The upper end connecting post 302 and the lower end connecting post 305 are solid structures. The positive electrode guide rod 303 and the negative electrode guide rod 304 are fixedly provided inside the upper end connecting post 302 and the lower end connecting post 305, respectively. The inner sides of the positive electrode guide rod 303 and the negative electrode guide rod 304 are located at the upper and lower sides inside the gas discharge tube 301, respectively. The outer sides of the positive electrode guide rod 303 and the negative electrode guide rod 304 are fixedly connected to the upper ends of the positive electrode support guide rod 201 and the negative electrode support guide rod 202, respectively. The solid metal halide, liquid metal, inert gas and ignition gas are all located inside the gas discharge tube 301.

[0029] In one specific embodiment, the solid metal halide is a mixture of sodium iodide, scandium iodide, dysprosium iodide, and thallium iodide. The core of the selection of these four halides revolves around the dual-core inventive objective of "balancing indoor daily lighting with stable release of 280nm-315nm UVB light across the entire wavelength range to promote calcium absorption in the human body." The optimal technical solution is formed by leveraging the irreplaceable functional characteristics and strong synergistic effects of each halide. Sodium iodide provides the performance foundation for high color rendering indoor lighting and forms a stable arc discharge system with scandium iodide, ensuring stable performance throughout the lamp's lifespan. Scandium iodide precisely provides the 280nm-300nm short-wave UVB core output suitable for dark-skinned individuals, while thallium iodide supplements the 300nm-315nm long-wave UVB with high response for light-skinned individuals, infants, and the elderly. Furthermore, the wide voltage start-up performance of the lamps is optimized, and both components cover the entire UVB range from beginning to end, solving the core pain point of poor universality of existing single-band technologies. Dysprosium iodide, with its rich characteristic spectral lines covering the entire range, fills the spectral gaps, achieving continuous and uninterrupted UVB light output from 280nm to 315nm, while further improving the colorimetric properties of the illumination. The four components form a perfect synergy in spectral output, discharge stability, working vapor pressure, and dose adjustability, achieving both calcium absorption promotion function suitable for all population groups and qualified indoor lighting effects, while also possessing excellent processability, long-term reliability, and safety compliance in home scenarios. This is the optimal combination to achieve the core technical effects of this invention. Among them, dysprosium iodide can be replaced with thulium iodide, and thallium iodide can be replaced with indium iodide, with the same effect.

[0030] In one specific embodiment, the filling amount of sodium iodide is 20%-35% of the total mass of the solid metal halide, the filling amount of scandium iodide is 15%-30% of the total mass of the solid metal halide, the filling amount of dysprosium iodide is 10%-25% of the total mass of the solid metal halide, and the filling amount of thallium iodide is 5%-20% of the total mass of the solid metal halide, and the total mass percentage of the above four components is 100%; wherein, the filling ratio of sodium iodide is as the core output for providing visible light, ensuring the brightness and color rendering of daily lighting, achieving a color rendering index Ra≥90, and at the same time, it can help form the basic spectrum of the UVB band and stabilize the arc discharge state; the filling ratio of scandium iodide, It can provide characteristic spectral lines of short-wave UVB in the 280nm-300nm range, filling the short-wave range of the entire wavelength band. Together with sodium iodide, it forms a classic Sc-Na metal halide lamp system, which greatly improves arc stability and avoids spectral drift. The filling ratio of dysprosium iodide can cover the entire 280-315nm range, filling spectral gaps and upgrading UVB from discrete spectral lines to continuous full-band coverage, greatly improving visible light color rendering and adapting to indoor lighting needs. The filling ratio of thallium iodide can accurately supplement the output of long-wave UVB in the 300nm-315nm range, achieving full-band coverage without gaps. In addition, it can reduce the discharge start-up voltage, suppress the self-absorption of sodium spectral lines, and ensure the long-term stability of spectral output.

[0031] In one specific embodiment, the liquid metal is liquid mercury. Liquid mercury is chosen because it is easy to fill in precise quantities, its vaporization rate is well-suited for discharge initiation, and it can rapidly vaporize into mercury vapor after the lamp discharges and generates heat. This mercury vapor then simultaneously forms plasma with the metal halide vapor, avoiding the start-up delay caused by the slow vaporization of solid materials. This meets the immediate-on requirement of indoor lighting. Furthermore, the discharge plasma density of pure metal halide vapor is prone to fluctuations, leading to unstable UVB intensity. In contrast, mercury vapor has a moderate ionization energy, which can stabilize the ion concentration of the plasma. The system ensures that the discharge process remains in a stable state of high-voltage arc discharge, guaranteeing that the radiation intensity of UVB light across the entire 280nm-315nm band remains consistently within the safe range of 0.02-0.05mW / cm². This intensity range meets the requirements for vitamin D synthesis and complies with international safety standards, preventing skin damage. Mercury is in a gaseous state when the lamp is working, and rapidly condenses into a liquid state as the temperature decreases after the lamp is extinguished, flowing back to the bottom of the gas discharge tube 301. There is no volatilization or loss, and it can repeatedly participate in the discharge throughout the entire lifespan of the lamp, ensuring the consistency of UVB emission performance after each startup.

[0032] In one specific embodiment, the liquid mercury filling amount is 10%-15% of the total mass of the solid metal halide and liquid metal. This filling ratio is a precise dosage adapted to the 301 cavity of the gas discharge tube with an inner diameter of 8mm and a length of 30mm. This ensures that the functional characteristics of mercury are fully utilized without performance defects caused by excessive or insufficient dosage. When the lamp is working normally, the concentration of the vaporized mercury can precisely regulate the ion density of the discharge plasma, suppressing the concentration fluctuation of the corresponding vapor and keeping the discharge process in a stable state. This function directly ensures that the radiation intensity of the 280nm-315nm UVB full-band light is stable at 0.02-0.05mW / cm², and the intensity change rate is ≤5% after 1000 hours of aging test. If the ratio is too low, the plasma is prone to fluctuation, resulting in problems such as inconsistent UVB intensity and band drift. If the ratio is too high, the high concentration of mercury vapor will mask the core spectrum of the metal halide, leading to UVB... The emission intensity exceeds the standard. Simultaneously, due to the high discharge start-up voltage of metal halides, individual discharge is difficult to adapt to 110V low-voltage scenarios. Mercury vapor at this ratio can moderately reduce the start-up and operating voltage of the entire discharge system, allowing the lamp's intelligent driver power supply to adapt to 110-220V, fitting different national and regional power grid specifications and improving the lamp's versatility. If the mercury filling ratio is too low, its voltage regulation effect will be limited, and it will not start normally under low voltage. Furthermore, the plasma formed by mercury vapor and metal halide vapor at this ratio has a discharge intensity highly matched to the lamp's 30-100W power adjustment, allowing for simultaneous fine-tuning of UVB radiation intensity during power adjustments, such as reaching 0.035mW / cm² at 60W. This ensures that UVB intensity remains within a safe and effective range at different power levels, meeting the needs of different groups such as the elderly and infants while avoiding skin damage caused by excessive intensity.

[0033] In one specific embodiment, based on the total volume of the gas discharge tube, the filling volume of inert gas is 10%-45% of the total volume of the gas discharge tube. As a buffer gas, the proportion of 10%-45% can stabilize the arc discharge, reduce electrode sputtering, and extend the service life of the lamp. If the proportion is too low, the arc cannot be stabilized, and if it is too high, the starting difficulty will be greatly increased. The filling volume of ignition gas is 1%-3% of the total volume of the gas discharge tube. This proportion can enable the lamp to start quickly and reduce the initial breakdown voltage. If the proportion is too high, it will interfere with the stability of the main discharge, and if it is too low, effective ignition cannot be achieved.

[0034] In one specific embodiment, the filling pressure of the inert gas and the ignition gas is 0.11 atm-0.45 atm. At this pressure, the relevant molecules can be instantly ionized into ions and free electrons in the high-voltage electric field of the electrodes, forming an effective initial glow discharge. If the pressure is higher than 0.45 atm, the intermolecular spacing is too small, and the ionization difficulty increases significantly, which will lead to difficulty in starting the lamp or even failure to ionize. If the pressure is lower than 0.11 atm, the molecules are too sparse, and the plasma after ionization cannot form an effective glow discharge, which also prevents the lamp from starting. Furthermore, since the lamp core assembly 3 is an alumina ceramic sealed cavity with a small volume, the pressure of 0.11 atm-0.45 atm is far below the pressure resistance limit of the cavity, and there will be no leakage at the seal due to excessive internal pressure during long-term use.

[0035] In one specific embodiment, the inert gas is argon or krypton. The core reason for this gas selection is their excellent chemical inertness and compatible discharge characteristics, which allow them to play a crucial role in buffering and stabilizing the arc, protecting electrodes, and regulating electrical performance. Both can form a stable plasma atmosphere within a filling pressure range of 0.11 atm-0.45 atm and a power range of 30-100W, suppressing abnormalities such as arc contraction and current fluctuations, and ensuring a stable vaporization ratio of metal halides and mercury. This achieves long-term stable output across the entire UVB band of 280nm-315nm. Simultaneously, their chemical inertness prevents reactions with components such as the cavity and electrodes, reducing electrode sputtering losses and extending the lamp's lifespan. Furthermore, their low thermal conductivity and lack of harmful spectral interference allow them to work with liquid mercury to lower the start-up and operating voltage of the discharge system, making them compatible with 110-220V. The system utilizes a wide-voltage power grid. Argon gas is inexpensive and offers balanced performance, making it suitable for mass-production household applications. Krypton gas has lower ionization energy and better electrode protection, making it suitable for low-temperature environments and high-end applications. Both can be flexibly selected based on actual needs, and both meet the dual core requirements of this invention: household lighting and calcium absorption promotion. The ignition gas is either xenon or hydrogen. The core reason for their selection is the extremely low ionization energy of both, which addresses the pain points of high cold-state start-up voltage and start-up delay in solid metal halide and liquid mercury systems. With a filling ratio of 1%-3%, both gases can be ionized and broken down first in a cold, low-voltage electric field, forming an initial glow discharge and heating the cavity. This promotes rapid vaporization of mercury and metal halides, smoothly transitioning to a stable high-voltage arc discharge, thus achieving the "instant-on" requirement for household lighting. Furthermore, once the lamp is operating stably, it will not interfere with the main arc discharge and UVB. The core spectral output is free of harmful radiation and decomposition products, meeting household safety standards. Xenon gas exhibits extremely high chemical stability, with no consumption throughout its entire lifecycle, rapid ignition, and consistent start-up performance over a long period, making it suitable for high-end household applications. Hydrogen gas, on the other hand, has lower production costs, good molecular diffusion, excellent start-up consistency, and can adsorb residual impurities in the cavity, further enhancing the stability of the lamp. It is suitable for large-scale, affordable household applications. The selection of these two options balances ignition performance, safety, and industrial compatibility, and also aligns with the technical solution and application requirements of this invention.

[0036] In one specific embodiment, a degassing agent 203 is fixedly provided on the positive electrode support rod 201; the degassing agent 203 is mainly used to remove or reduce the oxygen, water vapor and other impurity gases remaining inside the lamp tube 1 after sealing, thereby protecting its internal sensitive components and extending the life of the bulb.

[0037] In one specific embodiment, an insulating sleeve 206 is provided on the side of the lamp core assembly 3 on the positive electrode support rod 201. The insulating sleeve 206 can be made of materials with insulating properties such as ceramics and glass fiber. By setting the insulating sleeve 206, the problem of current interference during lamp use can be avoided and the corona discharge can be eliminated.

[0038] In one specific embodiment, a positive extension guide 204 is fixedly provided between the upper end of the positive support guide 201 and the positive guide 303, and a negative extension guide 205 is fixedly provided between the upper end of the negative support guide 202 and the negative guide 304. Through the positive and negative extension guides, the welding position of the lamp core assembly 3 and the limiting bracket assembly 2 can be flexibly adjusted during the assembly of the lamp core assembly 3 and the limiting bracket assembly 2, so as to ensure that after the lamp is assembled, the lamp core assembly 3 is located in the middle position inside the lamp tube 1.

[0039] In one specific embodiment, the positive electrode rod 303 and the negative electrode rod 304 are made of tungsten wire, which can maximize the stability of the lamp during discharge.

[0040] In one specific embodiment, the lighting device is further provided with a lampshade assembly 5, which includes a lampshade housing 501 and a reflector 502. The reflector 502 is fixedly disposed inside the lampshade housing 501. A lamp holder 503 is fixedly disposed at the middle position of the bottom end of the inner side of the lampshade housing 501. An avoidance hole 50201 is provided on the reflector 502 at the position of the lamp holder 503. The lamp head assembly 4 can pass through the avoidance hole 50201 and be fixedly connected to the lamp holder 503 to achieve mutual conduction. The lampshade housing 501 includes a rear end fixing plate, a front end fixing cover, and an annular light-shielding frame 506. The lamp holder 503 and the reflector 502 are both fixedly connected to the rear end fixing plate. The annular light-shielding frame 506 is located at the front circumference of the front end fixing cover and has a front panel 504. The lamp holder 503 is fixed to the lamp head assembly 4 by a snap fastener, and the rear end fixing plate and the front end fixing cover are fixed by a snap fastener. An electronic ballast 505 is fixedly installed inside the lampshade housing 501. The lampshade housing 501 is made of metal, preferably aluminum alloy, and the front panel 504 is made of tempered glass with a frosted surface.

[0041] In one specific embodiment, since direct exposure of UVB rays to the eyes can easily cause conjunctival and corneal damage, and even increase the risk of cataracts, the width of the annular light-shielding frame 506 is limited to 2cm-3cm. This width limit can prevent UVB rays from directly hitting the eyes when the lamp is illuminating. The 2cm-3cm width is just right for the conventional installation height of the lamp at 2.5-3.5m, and is within the normal eye viewing range of a sitting or standing person, blocking the upward-sloping UVB path of the lamp body, while not blocking the UVB in the areas of human skin activity downwards, ensuring effective irradiation for vitamin D synthesis. Furthermore, since the visible light brightness of the lamp is relatively high when it is working, with a color rendering index Ra≥90, the 2cm-3cm width can greatly reduce the stimulation of strong glare on the eyes, blocking the direct strong light from the core light-emitting area of ​​the lamp body, making the light entering the eyes softer and meeting the visual comfort requirements of indoor lighting.

[0042] In one specific embodiment, the reflector 502 is a semi-circular parabolic structure. The focal point of the reflector 502 coincides with the center of the lamp body 6, maximizing the concentrated reflection of UVB light, achieving a utilization rate of over 85%, and an illumination uniformity error of ≤10%. The inner surface of the reflector 502 is provided with a hemispherical protrusion. The core function of this protrusion is to modify the light propagation path through physical structure, based on the concentrated reflection of light by the parabolic reflector 502, to form a controllable diffuse reflection effect, thus overcoming the problem of concentrated reflection by parabolic surfaces. This invention addresses the issues of excessive UVB intensity and visible light glare, while also improving the effective coverage and utilization efficiency of UVB light, ultimately ensuring that the UVB uniformity error in the irradiated area is ≤10%. Simultaneously, it optimizes the visual comfort of indoor lighting. All these functions revolve around the dual core needs of "lighting + health" for this invention's lamp. Without the protrusion, the directional reflection of its pure parabolic surface would cause the light to be highly concentrated in a localized area, resulting in the UVB radiation intensity in that area exceeding the safe range of 0.02-0.05 mW / cm². Long-term exposure can easily cause skin redness, itching, and other damage.

[0043] In one specific embodiment, since the UVB light is emitted spherically throughout the entire space when the lamp is working, without an efficient reflection structure, more than half of the UVB light will be lost to non-target areas and cannot reach the human activity area. Therefore, a titanium dioxide coating is sprayed on the inner surface of the reflector 502. The titanium dioxide coating has a reflectivity of ≥95% for the UVB band, which can accurately concentrate and reflect the UVB light emitted by the lamp towards the lamp cover side to the target irradiation area of ​​human activity through the parabolic structure, directly increasing the overall utilization rate of UVB light of the lamp to over 85%. Compared with lamps without a reflection structure, this significantly improves the efficiency of UVB light utilization. The efficiency of titanium dioxide synthesis is increased by 3-5 times. Furthermore, since the reflector 502 is made of metal, although it has undergone anodizing treatment, it may still suffer from substrate oxidation and deterioration, surface corrosion, and other problems due to long-term exposure to strong UVB radiation and temperature and humidity cycles. The titanium dioxide coating forms a dense physical protective layer on the basis of the anodized film, which can isolate UVB light, water vapor, air pollutants and direct contact with the metal substrate, avoiding aging, deformation and corrosion of the substrate after long-term use. This significantly improves the mechanical properties and service life of the reflector 502, perfectly matching the long life and high stability characteristics of the lamp.

[0044] In one specific embodiment, the diameter of the hemispherical boss is 0.5mm-1mm, and the spacing between adjacent bosses is 1.5mm. This diameter range can be adapted to the diffuse reflection requirements of different application scenarios, while the 1.5mm spacing provides a uniform distribution density guarantee for the diameter range. Together, they achieve the design goal of UVB uniformity error of ≤10% in the irradiated area, while ensuring light reflection efficiency and lampshade structural stability, adapting to the wide range of requirements of laser engraving process and different application scenarios of lamps.

[0045] In one specific embodiment, the lamp holder 503 is fixed to the lamp head assembly 4 by a snap fastener; the rear end fixing plate 50101 of the lamp cover housing and the front end fixing cover 50102 of the lamp cover housing are fixed by a snap fastener; the snap fastener fixation enables quick disassembly and assembly, with short assembly time, high assembly efficiency, and convenient maintenance.

[0046] In one specific embodiment, an electronic ballast 505 is fixedly installed inside the lamp housing 501. This electronic ballast supports continuous adjustment of power from 30 to 100W. By adjusting the output power, the discharge intensity inside the lamp can be precisely controlled, thereby linearly fine-tuning the radiation intensity of UVB light across the entire 280nm-315nm band, always locking it within the safe and effective range of 0.02-0.05mW / cm². For example, the elderly can choose a higher power to increase the UVB irradiation intensity, while infants and young children can choose a lower power to reduce the irradiation dose. This not only meets the vitamin D synthesis needs of different groups of people, but also eliminates the risk of skin damage caused by excessive UVB intensity from the electrical source, ensuring the stable operation of the lamp.

[0047] In a specific embodiment, to ensure continuous, efficient, and stable output of UVB light across the entire 280nm-315nm band, the total mass of the solid metal halide inside the gas discharge tube is 10mg, with the following component ratios: sodium iodide 30%, scandium iodide 25%, dysprosium iodide 25%, and thallium iodide 20%. The liquid mercury filling amount is 12% of the total mass of the solid metal halide and liquid mercury. The inert gas filling volume is 30% of the total volume of the gas discharge tube, and the ignition gas filling volume is 2% of the total volume of the gas discharge tube. The filling pressure of the inert gas and ignition gas is 0.3 atm. The rated power of the lighting device is 60W. The above series of parameters are optimal parameters, which can maximize the continuous, uninterrupted, and stable output of UVB light across the entire 280nm-315nm band during the operation of the lighting device, with the UVB radiation intensity remaining stable within the safe and effective range of 0.035mW / cm². Furthermore, after 1000 hours of aging testing, the UVB... With an intensity change rate of ≤3% and no spectral drift, the visible light color rendering index Ra≥95 fully meets the needs of daily indoor lighting. According to in vitro skin model tests, under the same irradiation time, the vitamin D synthesis efficiency is 42% higher than that of a single-band 303nm LED, which can simultaneously meet the irradiation needs of different groups such as dark skin, light skin, the elderly, and infants.

[0048] A method for manufacturing a lighting device that promotes calcium absorption in the human body includes the following steps: Step (1): Processing of lamp wick assembly 3: Step (1-1): Select the lamp wick assembly 3 of the required size, and install the positive electrode rod 303 and the negative electrode rod 304 into the upper connecting post 302 and the lower connecting post 305 at both ends of the lamp wick assembly 3, respectively.

[0049] Step (1-2): Mix solid metal halide, liquid metal, inert gas and ignition gas in a specific ratio, fill the mixture into the lamp wick assembly 3, and then seal the lamp wick assembly 3.

[0050] Step (2): Processing of lamp wick assembly 3 and limiting bracket assembly 2: Step (2-1): Insert the insulating sleeve 206 onto the positive electrode support rod 201, and fix the degassing agent 203 onto the positive electrode support rod 201.

[0051] Step (2-2): Weld one end of the positive electrode extension rod 204 to the outer end of the positive electrode rod 303, weld one end of the negative electrode extension rod 205 to the outer end of the negative electrode rod 304, then weld the other end of the positive electrode extension rod 204 to the upper end of the positive electrode support rod 201, and weld the other end of the negative electrode extension rod 205 to the upper end of the negative electrode support rod 202.

[0052] Step (3): Assembly of lamp tube 1 and limiting bracket assembly 2: Step (3-1): After the lamp wick assembly 3 and the limiting bracket assembly 2 are assembled, the lamp wick assembly 3 and the limiting bracket assembly 2 are placed inside the lamp tube 1. Then, the bottom end of the lamp tube 1 is heat-sealed. After heat-sealing, the lower ends of the positive electrode support rod 201 and the negative electrode support rod 202 are located outside the bottom end of the lamp tube 1, respectively.

[0053] Step (4): Assembly of lamp tube 1 and lamp holder assembly 4: Step (4-1): Weld the positive electrode support rod 201 and negative electrode support rod 202 on the outside of the bottom end of the lamp tube 1 to the positive electrode pin 402 and negative electrode pin 403 respectively. After welding and fixing, seal and fix the lamp tube 1 to the lamp head housing 401.

[0054] Step (5): Processing of lampshade assembly 5 and assembly of lampshade assembly 5 with lamp body 6: Step (5-1): Select a metal material and process it into a semi-circular parabolic reflector 502 through die casting.

[0055] Step (5-2): The inner surface of the reflector 502 is anodized to form an oxide film.

[0056] Step (5-3): Apply a titanium dioxide coating to the inner surface of the anodized reflector 502 using a spraying process.

[0057] Step (5-4): After the spraying is completed, the reflector 502 is cured at high temperature to make the titanium dioxide coating tightly bonded to the inner surface of the reflector 502.

[0058] Step (5-5): Using laser engraving technology, multiple hemispherical bosses with a diameter of 0.5mm-1mm and a spacing of 1.5mm between adjacent bosses are processed on the inner surface of reflector 502. After engraving, the surface of the bosses is polished to ensure that the surface of the bosses is smooth and to avoid abnormal light refraction. Finally, the processing of reflector 502 is completed.

[0059] Steps (5-6): Select the lampshade housing 501 of the required size, and assemble the lamp holder 503, reflector 502, and electronic ballast 505 onto the rear fixing plate 50101 of the lampshade housing.

[0060] Steps (5-7): After assembly, insert and fix the lamp head assembly 4 on the lamp body 6 to the lamp holder 503. Then, place the front panel 504 of the lamp cover on the annular light-shielding frame 506, and fix the front fixing cover 50102 of the lamp cover housing and the rear fixing plate 50101 of the lamp cover housing to each other.

[0061] In one specific embodiment, in step (1-1), the gas discharge tube 301 is made of alumina ceramic material.

[0062] In a specific embodiment, in step (1-1), the outer surfaces of the positive electrode rod 303 and the negative electrode rod 304 are respectively provided with thorium plating. By setting the thorium plating, the electrodes can maintain continuous and uniform electron emission throughout the entire working cycle, so that the high-voltage arc discharge in the lamp core assembly 3 is always in a stable and controllable state, avoiding abnormalities such as current fluctuations and arc interruption. This ensures that the vaporization concentration of solid metal halide and liquid metal in the lamp core assembly 3 is always stable at the designed ratio, guaranteeing the spectral integrity of the 280nm-315nm full-band UVB and the safe radiation intensity range of 0.02-0.05 mW / cm² from the source. Furthermore, when adjusting the power, the thorium-plated electrodes can synchronously and linearly adjust the electron emission, achieving smooth fine-tuning of UVB radiation intensity, adapting to the irradiation needs of different groups such as the elderly and infants, and preventing problems such as discharge runaway and sudden rise and fall of UVB intensity due to power changes.

[0063] In a specific embodiment, in step (3), the material of lamp tube 1 is quartz glass, which has a transmittance of ≥90% for the UVB band, ensuring effective penetration of UVB light, and also has good heat insulation performance to protect the surrounding components of the lamp body.

[0064] In one specific embodiment, in step (5-2), the thickness of the oxide film on the inner surface of the reflector 502 is 10 μm.

[0065] In a specific embodiment, in step (5-1), the reflector 502 with a semi-circular parabolic structure has an opening diameter of 38.5 cm, a depth of 9.5 cm, and a parabolic focal length of 5 cm.

[0066] In one specific embodiment, in step (5-3), the thickness of the titanium dioxide coating is 0.3 mm.

[0067] In one specific embodiment, in step (5-4), the high-temperature curing temperature is 180°C and the high-temperature curing time is 2 hours.

[0068] However, the above description is merely a specific embodiment of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of the present invention should still fall within the scope of the claims of the present invention.

Claims

1. A lighting device that promotes calcium absorption in the human body, characterized in that: The lamp body includes a lamp tube and a lamp head assembly, which are fixedly connected. The lamp tube has a sealed interior and a limiting bracket assembly and a lamp wick assembly are provided inside the lamp tube. The limiting bracket assembly and the lamp wick assembly are fixedly connected to each other. The limiting bracket assembly includes a positive electrode support guide rod and a negative electrode support guide rod. The interior of the lamp wick assembly is a sealed structure. The positive electrode guide rod and the negative electrode guide rod are fixedly provided at both ends inside the lamp wick assembly. One end of the positive electrode guide rod and the negative electrode guide rod are respectively connected to the interior of the lamp wick assembly, and the other end of the positive electrode guide rod and the negative electrode guide rod are respectively fixedly connected to one end of the positive electrode support guide rod and the negative electrode support guide rod. The lamp head assembly includes a lamp head housing, inside which a positive electrode pin and a negative electrode pin are provided. The other ends of the positive electrode support rod and the negative electrode support rod are respectively fixedly connected to one end of the positive electrode pin and the negative electrode pin, and the other ends of the positive electrode pin and the negative electrode pin are located outside the lamp head housing. The positive electrode pin, positive electrode support rod, positive electrode rod, negative electrode rod, negative electrode support rod, and negative electrode pin form an electrical circuit. The lamp core assembly is filled with a mixed medium of solid metal halide, liquid metal, inert gas and ignition gas. When the lighting device is running, an arc discharge is formed between the positive and negative electrode rods, which ionizes and breaks down the mixed medium filled inside the lamp core assembly, thereby continuously releasing UVB light in the 280nm-315nm band.

2. The lighting device with the function of promoting calcium absorption in the human body according to claim 1, characterized in that: The lamp wick assembly is longitudinally arranged in the middle position inside the lamp tube, the positive electrode support rod is located on the side of the lamp wick assembly, and the negative electrode support rod is located at the lower end of the lamp wick assembly. The positive electrode support rod and the negative electrode support rod are respectively longitudinally arranged inside the lamp tube. The lamp wick assembly includes a gas discharge tube with a sealed interior. An upper connecting post and a lower connecting post are fixedly installed at the upper and lower ends of the gas discharge tube, respectively. A positive electrode guide rod and a negative electrode guide rod are fixedly installed inside the upper and lower connecting posts, respectively. The inner sides of the positive and negative electrode guide rods are located at the upper and lower sides inside the gas discharge tube, respectively. The outer sides of the positive and negative electrode guide rods are fixedly connected to the upper ends of the positive and negative electrode support guide rods, respectively. The solid metal halide, liquid metal, inert gas, and ignition gas are all located inside the gas discharge tube.

3. The lighting device with the function of promoting human calcium absorption according to claim 1 or 2, characterized in that: The solid metal halide is a mixture of sodium iodide, scandium iodide, dysprosium iodide, and thallium iodide.

4. The lighting device with the function of promoting calcium absorption in the human body according to claim 3, characterized in that: The amount of sodium iodide is 20%-35% of the total mass of the solid metal halide, the amount of scandium iodide is 15%-30% of the total mass of the solid metal halide, the amount of dysprosium iodide is 10%-25% of the total mass of the solid metal halide, and the amount of thallium iodide is 5%-20% of the total mass of the solid metal halide.

5. The lighting device with the function of promoting human calcium absorption according to claim 1 or 2, characterized in that: The liquid metal is liquid mercury.

6. The lighting device with the function of promoting human calcium absorption according to claim 5, characterized in that: The amount of liquid mercury is 10%-15% of the total mass of the solid metal halide and the liquid metal.

7. The lighting device with the function of promoting human calcium absorption according to claim 2, characterized in that: Based on the total volume of the gas discharge tube, the filling volume of the inert gas is 10%-45% of the total volume of the gas discharge tube, and the filling volume of the ignition gas is 1%-3% of the total volume of the gas discharge tube.

8. The lighting device with the function of promoting human calcium absorption according to claim 1 or 2, characterized in that: The filling pressure of the inert gas and the ignition gas is 0.11 atm-0.45 atm.

9. The lighting device with the function of promoting human calcium absorption according to claim 1 or 2, characterized in that: The inert gas is argon or krypton; the ignition gas is xenon or hydrogen.

10. The lighting device with the function of promoting calcium absorption in the human body according to claim 1, characterized in that: The lighting device also includes a lampshade assembly, which includes a lampshade housing and a reflector. The reflector is fixedly disposed inside the lampshade housing. A lamp holder is fixedly disposed at the middle of the bottom end of the inner side of the lampshade housing. An avoidance hole is provided on the reflector at the position of the lamp holder. The lamp head assembly can pass through the avoidance hole and be fixedly connected to the lamp holder to achieve mutual conduction. The lampshade housing includes a rear end fixing plate, a front end fixing cover, and an annular light-shielding frame. The lamp holder and reflector are fixedly connected to the rear end fixing plate. The annular light-shielding frame is located at the front circumference of the front end fixing cover and has a front panel. The width of the annular light-shielding frame is 2cm-3cm. The reflector has a semi-circular parabolic structure, with a hemispherical protrusion on its inner surface. The inner surface of the reflector is coated with titanium dioxide. The lamp holder and lamp head assembly are fixed together by snap-fit ​​fasteners, as are the rear end fixing plate and the front end fixing cover. An electronic ballast is fixedly installed inside the lampshade housing. The lampshade housing is made of metal, and the front panel is made of tempered glass with a frosted surface.

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