UV LED work indication lampshade

Abstract

The invention belongs to the technical field of ultraviolet germicidal lamps, and relates to a UV LED work indicating lampshade which comprises a light-transmitting area lampshade body and a UV indicating piece embedded in the light-transmitting area lampshade body in a penetrating mode. Or the UV indicating piece is arranged on the inner side or the outer side of the light-transmitting area cover body; or the UV guiding cover body and the light-transmitting piece are embedded in the UV guiding cover body in a penetrating mode. Compared with the prior art, external power supply is not needed, simple and visual state indication is achieved by exciting the fluorescent powder layer through the UV LED, and the UV light intensity indicator has the advantages of being simple in structure, high in environmental adaptability, easy to manufacture and integrate, energy-saving, environmentally friendly and the like, and is widely applied to working state indication and light intensity detection of UV lighting equipment.

Description

Technical Field

[0001] The present invention belongs to the technical field of ultraviolet germicidal lamps and relates to a working indicator lamp cover for a UV LED. Background Art

[0002] Ultraviolet light is the general term for radiation with a wavelength of 0.40 - 0.01 microns. Compared with visible light, ultraviolet light has higher energy, so it has important applications in fields such as disinfection and sterilization, health and medicine, identification and fluoroscopy, coating and glue curing, etc. UV LED is an important ultraviolet light source, which has the advantages of high energy efficiency, long life, no thermal radiation, low maintenance cost, easy to carry and install, etc. In the field of UV LED, traditional UV LEDs usually do not have an intuitive working status indicating device. Since the human naked eye is invisible to ultraviolet light, users cannot confirm whether the UV LED is in the working state without the help of tools, which may cause users to mistakenly think that the device is working properly when the lamp is not started or running abnormally, affecting the use effect. There is a lack of a lamp cover in the prior art that can directly observe whether the UV LED is working properly without external power supply.

[0003] In summary, there is an urgent need in this field to develop an indicator lamp cover that can directly display the working status of the UV LED, so that it can be simply and intuitively seen whether the UV LED is working, without complex manual operations and additional energy supply. This innovative indicator lamp cover will greatly improve the safety and practicality of ultraviolet light and meet the requirements of various application scenarios. Summary of the Invention

[0004] The purpose of the present invention is to provide a working indicator lamp cover for a UV LED to indicate whether the UV LED is working. Through the material fusion technology, the UV phosphor is fused in the UV LED lamp cover to achieve the working status indicating function, and improve the indicating effect, stability, safety and aesthetics of the ultraviolet germicidal lamp in the working environment. This solution combines the luminescence characteristics of the UV phosphor and the efficient optical design, and has the advantages of high reliability, low energy consumption and intuitive effect.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] The first aspect of the present invention provides a working indicator lamp cover for a UV LED, including a light-transmitting area cover body and a UV indicator member penetratingly embedded on the light-transmitting area cover body.

[0007] The second aspect of the present invention provides a working indicator lamp cover for a UV LED, including a light-transmitting area cover body and a UV indicator member arranged inside the light-transmitting area cover body.

[0008] The third aspect of the present invention provides a UV LED working indicator lamp cover, including a light-transmitting area cover body and a UV indicator provided outside the light-transmitting area cover body.

[0009] In some specific embodiments, the material of the light-transmitting area cover body is one of polycarbonate (PC), polymethyl methacrylate (PMMA), or glass. More preferably, the glass is selected from one of silicate glass, borate glass, borosilicate glass, oxide, or fluoride glass, and has the characteristics of high temperature resistance, ultraviolet resistance, and anti-aging.

[0010] In some specific embodiments, the material of the UV indicator is a mixture of a transparent substrate and a UV phosphor.

[0011] In some specific embodiments, the transparent substrate is selected from one of polycarbonate, polymethyl methacrylate, glass, or silica gel, and has the characteristics of high temperature resistance, ultraviolet resistance, and anti-aging.

[0012] In some specific embodiments, the UV phosphor can emit visible light under ultraviolet light excitation. The selection and configuration of the phosphor can achieve different color emission effects according to needs to clearly distinguish the working state of the UV LED.

[0013] In some specific embodiments, the mass ratio of the transparent substrate to the UV phosphor is 100:(5 - 30).

[0014] The fourth aspect of the present invention provides a UV LED working indicator lamp cover, including a UV guiding cover body and a light-transmitting member embedded through the UV guiding cover body.

[0015] In some specific embodiments, the material of the light-transmitting member is one of polycarbonate, polymethyl methacrylate, or glass.

[0016] In some specific embodiments, the material of the UV guiding cover body is a mixture of a transparent substrate and a UV phosphor.

[0017] In some specific embodiments, the transparent substrate is selected from one of polycarbonate, polymethyl methacrylate, glass, or silica gel; the mass ratio of the transparent substrate to the UV phosphor is 100:(5 - 30).

[0018] In some specific embodiments, the UV LED working indicator lamp cover further includes a light guiding structure. The inner structure guides and optimizes the light through a microlens array or an optical fiber array, so that the light emitted by the UV LED can uniformly excite the phosphor layer and ensure the best display of the emission effect.

[0019] Through steps such as forming with transparent materials, mixing and coating phosphor materials, and curing, the phosphor is coated on specific areas of the inner and outer surfaces of the lampshade, or the phosphor structure and the light-transmitting structure are nested with each other. On the premise of ensuring the UV sterilization function, visible light is generated under the irradiation of the ultraviolet light emitted by the UV LED, and the intensity of this visible light can indicate the change in the working state of the UV LED; without external power supply, the phosphor layer can be excited by the UV LED to achieve simple and intuitive state indication, which has the advantages of simple structure, strong environmental adaptability, easy manufacturing and integration, energy conservation and environmental protection, and is widely applicable to the working state indication and light intensity detection of UV lighting equipment.

[0020] At the same time, the present invention can also enhance the UV resistance of the lampshade, because the phosphor can convert a part of the UV light into visible light, avoiding the influence of the UV light on the lampshade.

[0021] Compared with the prior art, the present invention has the following characteristics:

[0022] 1) No external power supply is required: Traditional UV indicators usually require an external power source or complex circuits to support their operation, while the present invention uses the characteristic of converting the light emitted by the UV LED itself into visible light for indication, without external power supply, which simplifies the design and use process;

[0023] 2) Enhance the UV resistance of the lampshade: The present invention proposes a method of adding specific UV phosphors or coating a UV phosphor layer in the lampshade material, which significantly improves the UV resistance of the lampshade. The phosphor can effectively absorb and convert ultraviolet light, reduce the damage of ultraviolet light to the lampshade, thereby delaying the occurrence of yellowing and aging phenomena and extending the service life of the lampshade.

[0024] 3) Simplified structure and components: Compared with traditional UV indicators, the main structure of the present invention is simpler, composed of transparent materials containing UV phosphors, which can be directly excited by the ultraviolet light emitted by the UV LED and can intuitively display the magnitude of the ultraviolet light intensity. This design not only saves material costs but also reduces the number and complexity of components;

[0025] 4) Strong environmental adaptability: Traditional UV light intensity detectors may be sensitive to ambient light, while the present invention uses the specific wavelength of the UV LED for indication, which is less affected by ambient light interference and can provide more stable and accurate indication results.

[0026] 5) Easy to manufacture and integrate: Due to the adoption of a simplified structure and materials, the manufacturing cost is relatively low and the manufacturing process is relatively...

[0027] 6) Energy conservation and environmental protection: Since no external power supply is required, the present invention has the characteristics of energy conservation and environmental protection, reducing power consumption and the generation of electronic waste, meeting the requirements of modern society for energy conservation and emission reduction. Brief Description of the Drawings

[0028] Figure 1 It is the ultraviolet spectrum diagram detectable by the UV phosphor used in Example 1.

[0029] Figure 2 It is the spectrum diagram of the visible light band emitted by the UV phosphor used in Example 1.

[0030] Figure 3 It is the spectrum diagram of the visible light band of the lampshade part without phosphor added in Example 1

[0031] Figure 4 It is the schematic structural diagram of a UV LED lampshade in Example 1.

[0032] Figure 5 It is the schematic diagram of the mold of a UV LED lampshade in Example 4.

[0033] Figure 6 It is the schematic structural diagram of a UV LED lampshade in Example 5. Detailed Embodiment

[0034] The present invention will be described in detail below in conjunction with the drawings and specific embodiments.

[0035] A UV LED lampshade includes:

[0036] 1. Outer transparent cover body:

[0037] The outer layer of the lampshade is made of a transparent or semi-transparent high-strength material, such as polycarbonate (PC) or acrylic (PMMA), glass (including silicate glass, borate glass, borosilicate glass, oxide and fluoride glass), etc., which has high temperature resistance, ultraviolet resistance and anti-aging characteristics. The outer cover body enables the light of the internal light source to be evenly scattered or emit visible light through the phosphor through a specific optical design.

[0038] 2. Phosphor layer:

[0039] A layer of UV phosphor is evenly coated on the surface of the outer layer or a local area of the inner layer of the lampshade, and this phosphor can emit visible light under the excitation of ultraviolet light. The selection and configuration of the phosphor can achieve different color emission effects according to needs to clearly distinguish the working state of the UV LED. For example, when the UV LED is working, the phosphor will emit a specific color (such as green), and when the device is turned off, it will show the color of the phosphor itself (such as white).

[0040] 3. Inner light guide structure:

[0041] The inner structure guides and optimizes light through a microlens array or an optical fiber array, enabling the light emitted by the UV LED to uniformly excite the phosphor layer and ensuring the best display of the light-emitting effect. The design of the inner structure can further improve the excitation efficiency of the phosphor and the light scattering effect, enhancing the brightness and visual effect of the indicator lamp cover.

[0042] Principle of operation

[0043] 1. UV LED excitation:

[0044] The UV LED excites the UV phosphor layer of the lamp cover by emitting ultraviolet light, causing the phosphor to produce visible light, thereby achieving the indication of the working state. When the UV LED is working, the UV phosphor will emit visible light of a specific wavelength (such as green or red, etc.) to clearly indicate that the device is in the working state.

[0045] 2. Status indication:

[0046] According to the working and non-working states of the UV LED, the emission color of the phosphor layer changes. When the UV LED is turned on, the phosphor of the indicator lamp cover will emit light of a specific color to clearly show that the device is working; when the UV LED is turned off, the phosphor shows its original color, indicating that the device is in the non-working state. When the brightness of the UV LED decays, the brightness of the phosphor area of the indicator lamp cover also weakens.

[0047] In this technical solution, the UV LED indicator lamp cover is simple, intuitive, and easy to use.

[0048] A method for manufacturing a UV LED indicator lamp cover includes the following steps:

[0049] S1: Select a material with high transparency. Ensure that the UV phosphor can be evenly distributed in the material and has good optical properties and molding properties.

[0050] S2: Select a phosphor suitable for ultraviolet light to ensure that it can emit visible light under ultraviolet light irradiation. Ensure that the phosphor has high luminous efficiency and is compatible with the selected transparent material.

[0051] S3: Adopt a mold forming process to make the transparent material into the shape of the lamp cover. The molding process includes injection molding, hot pressing, CNC machining, and 3D printing.

[0052] S4: Take another portion of the transparent material and mix it with the UV phosphor in a certain proportion to ensure uniform mixing.

[0053] S5: After mold forming, take the lamp cover out of the mold and carry out cooling and curing.

[0054] S6: Add the mixed material made in step 4 to a part of the main body.

[0055] S7: Place it in a curing furnace for curing.

[0056] S8: After curing, take out the lamp cover from the mold and conduct cooling and solidification.

[0057] S9: Check the transparency and uniformity of the main body to ensure there are no bubbles and impurities.

[0058] S10: Conduct a function test to verify that visible light can be emitted when irradiated with UV light.

[0059] This embodiment is implemented on the premise of the technical solution of the present invention, and gives detailed implementation manners and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0060] The following are more detailed implementation cases to further illustrate the technical solution of the present invention and the technical effects that can be obtained through the following implementation cases.

[0061] In the following embodiments, if there is no special description of raw material reagents or treatment techniques, it means that they are all conventional commercially available products or conventional treatment techniques in the art.

[0062] In the following embodiments, the UV phosphor is prepared according to the preparation method of NaY-Ag phosphor in the literature of Xv X,Ye S,Pan L,et al.Tailoring the Luminescence Properties of Silver Clusters Confined in Faujasite Zeolite through Framework Modification[J].Materials,2022,15(21):7431.

[0063] The transparent PC is the LEXAN LGN2000 PC transparent color grade XHT4141.

[0064] The material of the transparent glass particles is fused quartz particles from Donghai County Hechuang Silicon Materials Co., Ltd.

[0065] The polymethyl methacrylate (PMMA) model is the CM-207 type from Chi Mei Industries Co., Ltd., Taiwan.

[0066] The silica gel is the Hasen RTVS603 type encapsulant from Shenzhen Huasheng Tongchuang Technology Co., Ltd.

[0067] Example 1:

[0068] A UV LED lamp cover, as Figure 4As shown, it includes a light-transmitting area cover 1 and a UV indicator 2 penetrating and embedded in the light-transmitting area cover 1. The light-transmitting area cover 1 is entirely transparent to serve as the main body of the lamp shade for light transmission. The UV indicator 2 is penetratingly embedded in the main body of the lamp shade for light transmission, receiving ultraviolet light on the inner side and exciting to generate visible light, and producing an indication effect through the outer side. The preparation method of this lamp shade includes the following steps:

[0069] S1: Mix PC particles and UV phosphor in a mass ratio of 100:8 to ensure uniform mixing to obtain phosphor-containing particles; the UV band absorption spectrum and visible light band emission spectrum of the UV phosphor are respectively as Figure 1 and Figure 2 shown;

[0070] S2: Take another portion of transparent PC particles;

[0071] S3: The mold is designed for two-component injection molding for simultaneous injection molding of transparent PC particles and phosphor-containing particles. Among them, the transparent PC particles are used to form the light-transmitting area cover 1, and the phosphor-containing particles are used to form the UV indicator 2;

[0072] S4: After injection molding, take out the main body, cool and solidify it to ensure uniform material and no bubbles;

[0073] S5: Under the irradiation of a UV lamp, the UV indicator area emits uniform and bright yellow-green light. For the part without added phosphor, no visible light penetrates, as Figure 3 shown.

[0074] Example 2:

[0075] A UV LED lamp shade, compared with Example 1, the difference is only that:

[0076] In step S1, polycarbonate (PC) is replaced with polymethyl methacrylate (PMMA) as the main material.

[0077] The rest is the same as in Example 1.

[0078] Example 3:

[0079] A UV LED lamp shade, compared with Example 1, the difference is only that:

[0080] In step S1, polycarbonate (PC) is replaced with transparent glass particles as the main material.

[0081] The rest is the same as in Example 1.

[0082] Example 4:

[0083] A UV LED lamp shade, as Figure 5As shown in the figure, it includes a light-transmitting area cover 1 on the outer layer and a UV indicator 2 on the inner layer. The light-transmitting area cover 1 is entirely transparent to serve as the main body for the lamp shade to transmit light. The UV indicator 2 is arranged on the inner side of the main body for the lamp shade to transmit light. The UV indicator 2 on the inner side receives ultraviolet light and is excited to generate visible light, which passes through the light-transmitting area cover 1 to produce an indication effect. The preparation method of this indicator lamp shade includes the following steps:

[0084] S1: Mix transparent glass particles and UV phosphor in a mass ratio of 100:9, ensure uniform mixing, and obtain phosphor-containing particles;

[0085] S2: Take another portion of transparent glass particles and melt them;

[0086] S3: The mold is designed as an inner and outer two-layer mold, as Figure 5 shown. The inner layer is used to form the UV indicator 2, and the outer layer is used to form the light-transmitting area cover 1;

[0087] S4: Pour the melted glass in step S2 into the outer layer;

[0088] S5: After the outer layer of glass cools and forms, take out the middle partition;

[0089] S6: Melt the mixed particles in step S1 and pour them into the inner layer;

[0090] S7: After cooling, take it out to ensure that the material is uniform and bubble-free;

[0091] S8: Under the irradiation of a UV lamp, the UV indicator area emits uniform and bright yellow-green light. For the part without the addition of phosphor, no visible light penetrates.

[0092] Example 5:

[0093] A UV LED lamp shade, as Figure 6 shown, includes a UV guiding cover 3 and a light-transmitting member 4 penetratingly embedded on the UV guiding cover 3. The light-transmitting member 4 is entirely transparent to serve as the ultraviolet light transmission area. After the UV guiding cover 3 is excited by ultraviolet light, it can generate visible light to play an indicating role. The difference in its preparation method compared with Example 4 is only that:

[0094] In step S4, pour the melted glass in step S2 into the inner layer of the mold;

[0095] In step S6, melt the mixed particles in step S1 and pour them into the outer layer of the mold.

[0096] The rest is the same as Example 4.

[0097] Example 6:

[0098] A preparation method of a UV LED lamp shade includes the following steps:

[0099] S1: Take transparent PC particles;

[0100] S2: Design the mold into the shape of a lampshade;

[0101] S3: After injection molding, take out the main body, cool and solidify it to ensure that the material is uniform and bubble-free;

[0102] S4: Mix silicone and UV phosphor in a mass ratio of 100:10, ensure uniform mixing to obtain a mixed glue;

[0103] S5: Attach a protective film to the lampshade and hollow out the indication area;

[0104] S6: Apply the mixed glue in step S4 on the protective film and cover the hollowed-out indication area;

[0105] S7: Put the entire lampshade in step S6 into a curing furnace for curing;

[0106] S8: After curing, take it out of the curing furnace and cool it;

[0107] S9: Peel off the protective film and check to see if there is any glue overflow, lack of glue, etc. in the indication area;

[0108] S10: Check under a UV lamp to ensure that the UV light irradiates the indication area and can display normally.

[0109] Example 7:

[0110] A UV LED lampshade, the difference in its preparation method compared with Example 6 is only that:

[0111] In step S1, replace the transparent PC particles with transparent glass particles.

[0112] In step S3, change injection molding to hot melt molding.

[0113] The rest is the same as in Example 6.

[0114] The above description of the embodiments is for the convenience of those of ordinary skill in the art to understand and use the invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative labor. Therefore, the present invention is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present invention according to the disclosure of the present invention should be within the protection scope of the present invention.

Claims

1. A UV LED working indicator light cover, characterized in that: The invention comprises a light-transmitting area cover body (1), and a UV indicator (2) penetrating and embedded in the light-transmitting area cover body (1).

2. A UV LED working indicator light cover, characterized in that: It comprises a light-transmitting area cover body (1) and a UV indicator (2) arranged on the inner side or the outer side of the light-transmitting area cover body (1).

3. The UV LED working indicator light cover according to claim 1 or 2, characterized in that: The material of the light-transmitting area cover (1) is one of polycarbonate, polymethyl methacrylate or glass.

4. The UV LED working indicator light cover according to claim 1 or 2, characterized in that: The material of the UV indicator (2) is a mixture of a transparent substrate and UV fluorescent powder.

5. The UV LED working indicator light cover according to claim 4, characterized in that: The transparent substrate is selected from one of polycarbonate, polymethyl methacrylate, glass or silica gel; the mass ratio of the transparent substrate to the UV fluorescent powder is 100:(5-30).

6. A UV LED working indicator light cover, characterized in that: It comprises a UV guiding cover body (3) and a light-transmitting member (4) penetrating and embedded in the UV guiding cover body (3).

7. The UV LED working indicator light cover according to claim 6, characterized in that: The material of the light-transmitting element (4) is one of polycarbonate, polymethyl methacrylate or glass.

8. The UV LED working indicator light cover according to claim 6, characterized in that: The material of the UV guiding cover (3) is a mixture of a transparent base material and UV fluorescent powder.

9. The UV LED working indicator light cover according to claim 8, characterized in that: The transparent substrate is selected from one of polycarbonate, polymethyl methacrylate, glass or silica gel; the mass ratio of the transparent substrate to the UV fluorescent powder is 100:(5-30).

10. The UV LED working indicator light cover according to claim 1, 2 or 6, characterized in that: It also includes a light guide structure inside the cover.

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