CN109058933B - Prevent antifog compound lamp shade of blue light - Google Patents
Prevent antifog compound lamp shade of blue light Download PDFInfo
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- CN109058933B CN109058933B CN201810969097.5A CN201810969097A CN109058933B CN 109058933 B CN109058933 B CN 109058933B CN 201810969097 A CN201810969097 A CN 201810969097A CN 109058933 B CN109058933 B CN 109058933B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
Abstract
The invention discloses an anti-blue-light anti-fog composite lampshade, which comprises a light-transmitting plate, wherein a blue-light preventing film is arranged on the top surface of the light-transmitting plate, the blue-light preventing film comprises a binding surface and a blue-light preventing surface, the binding surface is a smooth plane, the binding surface is bound to the light-transmitting plate, the surface form of the blue-light preventing surface is a quasi-periodic nano cone array, and the components of the blue-light preventing film are expressed by weight percent: 90-95% nanometer titanium dioxide sol, 4-9% titanium dioxide powder, 0.1-1% coumarin 540 through set up nanometer awl array on the lamp shade surface, reduce the divergence of blue light to realize preventing the effect of blue light, supplement the loss of light source luminance that the blue light can't disperse and lead to through adding coumarin 540 simultaneously.
Description
Technical Field
The invention relates to a part of a lighting device, in particular to a lampshade.
Background
The LED illumination light source has the advantages of energy conservation, environmental protection, durability and the like, but a white light source of the LED can generate a large amount of blue light which has a harmful effect on human eyes, so that the technology for eliminating the harm of the blue light of the LED is developed, for example, the blue light absorbent is added into a lampshade to reduce the transmittance of the blue light, or a multilayer film is plated on the surface of a substrate through a film plating technology to realize specific reflection of the blue light. Research shows that light can be filtered through the nano-microstructures, but lamps with blue light prevention performance through the nano-microstructures do not appear in the current lamp market.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a blue light prevention and fog prevention composite lampshade which realizes the blue light prevention performance through a nano-cone matrix and a preparation method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a prevent antifog compound lamp shade of blue light, includes the light-passing board, the top surface of light-passing board is provided with prevents the blue light membrane, prevent the blue light membrane including binding face and prevent the blue plain noodles, the binding face is glossy plane, the binding face laminate in the light-passing board, prevent the surface morphology on blue plain noodles and be the nanometer awl array of quasi-periodicity, the composition of preventing the blue light membrane expresses according to weight percent: 90-95% of nano titanium dioxide sol, 4-9% of titanium dioxide powder and 0.1-1% of coumarin 540.
The diameter of the bottom of each nano-cone in the nano-cone array is 100nm-150nm, the cone angle is 20-30 degrees, the length-diameter ratio is 15-25, the curvature radius of the tip is lower than 4nm, and the density of the nano-cones is 109cm-2-107cm-2。
A method for preparing the blue-light-proof and antifogging composite lampshade comprises the following steps:
1) preparing a nano cone array which is completely the same as the nano cone array on one plate surface of a copper substrate by a plasma etching technology, uniformly coating a chlorobenzene solution of polymethyl methacrylate with the mass concentration of 10% on the plate surface, then placing the conductive substrate in a vacuum environment, heating to 200 ℃, preserving heat for 4 hours, taking out the conductive substrate, naturally cooling, forming a polymethyl methacrylate film layer on the plate surface, separating the polymethyl methacrylate film layer from the copper substrate, and forming a recess corresponding to the nano cone array on the contact surface of the polymethyl methacrylate film layer and the copper substrate to obtain a template;
2) slowly adding the concentrated hydrochloric acid into the nano titanium dioxide sol, wherein the dosage ratio of the nano titanium dioxide sol to the concentrated hydrochloric acid is 1:0.15-0.2, fully stirring to flocculate the nano titanium dioxide sol, carrying out centrifugal separation at 2000r/min for 10 minutes to obtain a gel A, adding the ethanol into the gel A, wherein the dosage ratio of the gel A to the ethanol is 1:0.15-0.2, fully stirring, carrying out centrifugal separation at 2000r/min for 10 minutes to obtain a gel B subjected to alcohol treatment, adding the titanium dioxide powder and coumarin 540 into the gel B, and fully stirring at 400r/min for 10 minutes to obtain a liquid imprinting material;
3) according to the size of a light-transmitting plate, a proper amount of liquid imprinting material is uniformly coated on the top surface of the light-transmitting plate, one surface, with a recess, of the template is attached to the upper portion of the liquid imprinting material in a pressing mode, the template is completely filled with the liquid imprinting material, the template is imprinted for 6 hours under the conditions of 3MPa and 85 ℃, and after pressure is released, acetonitrile is used for dissolving the membrane plate, so that the blue-light-proof and antifogging composite lampshade is prepared.
The invention has the beneficial effects that: the nano cone array is arranged on the surface of the lampshade, so that the blue light divergence is reduced, and the blue light prevention effect is realized; the main components of the anti-blue light film, namely the nano titanium dioxide sol and the titanium dioxide powder, have the special functions of fog prevention and mildew prevention, and when the lamp is used as an indoor lighting device, the lampshade taking the titanium dioxide as the main component is beneficial to improving the indoor environment and protecting the human health; the loss of brightness of the light source due to the inability of blue light to diffuse is compensated by the addition of coumarin 540.
Detailed Description
The invention is illustrated and analyzed by the following examples.
The utility model provides a prevent antifog compound lamp shade of blue light, includes the light-passing board, the top surface of light-passing board is provided with prevents the blue light membrane, prevent the blue light membrane including binding face and prevent the blue plain noodles, the binding face is glossy plane, the binding face laminate in the light-passing board, the surface morphology of preventing the blue plain noodles is the nano-cone array of quasiperiodic, every nano-cone bottom diameter is 100nm-150nm in the nano-cone array, and the cone angle is 20-30, and draw ratio is 15-25, and sharp portion radius of curvature is less than 4nm, and nano-cone density is 10 nm9cm-2-107cm-2The composition of the anti-blue light film is represented by weight percentage: 90-95% of nano titanium dioxide sol, 4-9% of titanium dioxide powder and 0.1-1% of coumarin 540.
When light enters two interfaces with different refractive indexes, part of the light is reflected, and the reflection phenomenon between different media becomes a Fresnel reflection effect. The Fresnel reflection effect means that the refractive index is in a discontinuous state at the interface of two media due to the difference of the refractive indexes of the two media, so that incident light is reflected, and therefore, the enhancement of the Fresnel reflection effect of the surface of the blue light prevention lampshade material on blue light is an important means for improving the blue light filtering effect. In order to enhance the Fresnel reflection effect between interfaces, a reflecting layer for destroying the abrupt change of the refractive index can be modified at the interface of the material surface and the air through scientific technology so as to increase the interface reflection, and the method specifically comprises the following two steps: firstly, a reflecting layer with a refractive index between a lampshade material and air is added to enhance light reflection, namely, one of the main technologies of blue light prevention at present, and a multilayer film is plated on the surface of a base material by a film plating technology; secondly, through preparing concave-convex-shaped nano-microstructures on the surface of the lampshade material, the nano-cone array designed for the blue light wave band is equivalent to a medium layer for reducing the refractive index, and the blue light is continuously reflected back and forth in the nano light trapping structure, so that the blue light divergence is reduced, and a better blue light prevention effect is achieved.
The main components of the anti-blue light film, namely the nano titanium dioxide sol and the titanium dioxide powder, have the special functions of fog prevention and mould prevention, and when the lamp is used as an indoor lighting device, the lamp shade which takes the titanium dioxide as the main component is beneficial to improving the indoor environment and protecting the human health.
The coumarin 540 can emit green light and yellow light through fluorescent radiation, so that loss of light source brightness caused by the fact that blue light cannot be diffused is compensated, the total brightness attenuation of a light source is small, meanwhile, the coumarin 540 has the characteristic of absorbing blue light, can absorb the blue light penetrating through the nano-cone array, and forms double protection with the nano-cone array.
A method for preparing the blue-light-proof and antifogging composite lampshade comprises the following steps:
1) a method for preparing a nano-cone array which is completely the same as the nano-cone array on one plate surface of a copper substrate by a plasma etching technology is disclosed in patent document with publication number '1978310A', and the specific preparation method comprises the steps of cleaning a substrate in a biased Chemical Vapor Deposition (CVD) device, placing the substrate in the CVD device, vacuumizing to 10-2 Torr, carrying out plasma pre-etching treatment, turning off bias voltage and filament current, vacuumizing to 10-2 Torr again, and carrying out plasma etching to form the surface nano-cone array. Uniformly coating a chlorobenzene solution of polymethyl methacrylate with the mass concentration of 10% on the plate surface, then placing the conductive substrate in a vacuum environment, heating to 200 ℃, preserving heat for 4 hours, taking out and naturally cooling, forming a polymethyl methacrylate film layer on the plate surface, separating the polymethyl methacrylate film layer from the copper substrate, and forming a recess corresponding to the nanocone array on the contact surface of the polymethyl methacrylate film layer and the copper substrate to obtain the template.
2) Slowly adding the concentrated hydrochloric acid into the nano titanium dioxide sol, wherein the dosage ratio of the nano titanium dioxide sol to the concentrated hydrochloric acid is 1:0.15-0.2, fully stirring to flocculate the nano titanium dioxide sol, carrying out centrifugal separation at 2000r/min for 10 minutes to obtain a gel A, adding the ethanol into the gel A, wherein the dosage ratio of the gel A to the ethanol is 1:0.15-0.2, fully stirring, carrying out centrifugal separation at 2000r/min for 10 minutes to obtain a gel B subjected to alcohol treatment, adding the titanium dioxide powder and coumarin 540 into the gel B, and fully stirring at 400r/min for 10 minutes to obtain a liquid imprinting material;
3) according to the size of a light-transmitting plate, a proper amount of liquid imprinting material is uniformly coated on the top surface of the light-transmitting plate, one surface, with a recess, of the template is attached to the upper portion of the liquid imprinting material in a pressing mode, the template is completely filled with the liquid imprinting material, the template is imprinted for 6 hours under the conditions of 3MPa and 85 ℃, and after pressure is released, acetonitrile is used for dissolving the membrane plate, so that the blue-light-proof and antifogging composite lampshade is prepared. High-fidelity replica results can be obtained by stamping the nanocone array through the mold, and the polymethyl methacrylate prepared into the mold can be dissolved through chemical reagents, so that the complete appearance of the nanocone array is retained to the maximum extent, and the nanocone array cannot be damaged due to demolding.
The source and type of the raw materials in the examples:
the raw materials and instruments of the nano titanium dioxide sol (Jingjiang city expert chemical industry Co., Ltd.: model A212), the titanium dioxide powder (Dupont, U.S.: model R-960) and the coumarin 540 (Shanghai neosphere dye technology Co., Ltd.) are used for the purpose of illustration of the embodiment, and the same raw materials and instruments of other companies are also suitable.
Example 1:
the utility model provides a prevent antifog compound lamp shade of blue light, includes the light-passing board, the top surface of light-passing board is provided with prevents the blue light membrane, prevent the blue light membrane including binding face and prevent the blue plain noodles, the binding face is glossy plane, the binding face laminate in the light-passing board, prevent the surface morphology on blue plain noodles and be the nanometer awl array of quasiperiodic, every nanometer awl bottom diameter is 100nm in the nanometer awl array, and the cone angle is 20, and draw ratio is 15, and sharp portion curvature radius 3nm, and nanometer awl density is 109cm-2. The composition of the anti-blue light film is represented by weight percentage: 90% of nano titanium dioxide sol, 9% of titanium dioxide powder and 1% of coumarin 540.
A method for preparing the blue-light-proof and antifogging composite lampshade comprises the following steps:
1) preparing the nano cone array on one plate surface of a copper substrate by a plasma etching technology, uniformly coating a chlorobenzene solution of polymethyl methacrylate with the mass concentration of 10% on the plate surface, then placing the conductive substrate in a vacuum environment, heating to 200 ℃, preserving heat for 4 hours, taking out and naturally cooling, forming a polymethyl methacrylate film layer on the plate surface, separating the polymethyl methacrylate film layer from the copper substrate, and forming a recess corresponding to the nano cone array on the polymethyl methacrylate film layer to obtain a template;
2) slowly adding the concentrated hydrochloric acid into the nano titanium dioxide sol, wherein the dosage ratio of the nano titanium dioxide sol to the concentrated hydrochloric acid is 1:0.15-0.2, fully stirring to flocculate the nano titanium dioxide sol, carrying out centrifugal separation at 2000r/min for 10 minutes to obtain a gel A, adding the ethanol into the gel A, wherein the dosage ratio of the gel A to the ethanol is 1:0.15-0.2, fully stirring, carrying out centrifugal separation at 2000r/min for 10 minutes to obtain a gel B subjected to alcohol treatment, adding the titanium dioxide powder and coumarin 540 into the gel B, and fully stirring at 400r/min for 10 minutes to obtain a liquid imprinting material;
3) according to the size of a light-transmitting plate, a proper amount of liquid imprinting material is uniformly coated on the top surface of the light-transmitting plate, one surface, with a recess, of the template is attached to the upper portion of the liquid imprinting material in a pressing mode, the template is completely filled with the liquid imprinting material, the template is imprinted for 6 hours under the conditions of 3MPa and 85 ℃, and after pressure is released, acetonitrile is used for dissolving the membrane plate, so that the blue-light-proof and antifogging composite lampshade is prepared.
Example 2:
the utility model provides a prevent antifog compound lamp shade of blue light, includes the light-passing board, the top surface of light-passing board is provided with prevents the blue light membrane, prevent the blue light membrane including binding face and prevent the blue plain noodles, the binding face is glossy plane, the binding face laminate in the light-passing board, prevent the surface morphology on blue plain noodles and be the nanometer awl array of quasiperiodic, every nanometer awl bottom diameter is 100nm in the nanometer awl array, and the cone angle is 20, and draw ratio is 15, and sharp portion curvature radius 3nm, and nanometer awl density is 109cm-2. The anti-blue light filmThe components are expressed by weight percentage: 95% of nano titanium dioxide sol, 4% of titanium dioxide powder and 1% of coumarin 540.
The method of making the composite lamp cover is the same as in example 1.
Example 3:
the utility model provides a prevent antifog compound lamp shade of blue light, includes the light-passing board, the top surface of light-passing board is provided with prevents the blue light membrane, prevent the blue light membrane including binding face and prevent the blue plain noodles, the binding face is glossy plane, the binding face laminate in the light-passing board, prevent the surface morphology on the blue plain noodles and be the nano-cone array of quasiperiodic, every nano-cone bottom diameter is 150nm in the nano-cone array, and the cone angle is 30, and draw ratio is 25, and sharp portion curvature radius 2nm, and nano-cone density is 10 nm7cm-2. The composition of the anti-blue light film is represented by weight percentage: 90% of nano titanium dioxide sol, 9% of titanium dioxide powder and 1% of coumarin 540.
The method of making the composite lamp cover is the same as in example 1.
Example 4:
the utility model provides a prevent antifog compound lamp shade of blue light, includes the light-passing board, the top surface of light-passing board is provided with prevents the blue light membrane, prevent the blue light membrane including binding face and prevent the blue plain noodles, the binding face is glossy plane, the binding face laminate in the light-passing board, prevent the surface morphology on the blue plain noodles and be the nano-cone array of quasiperiodic, every nano-cone bottom diameter is 150nm in the nano-cone array, and the cone angle is 30, and draw ratio is 25, and sharp portion curvature radius 2nm, and nano-cone density is 10 nm7cm-2. The composition of the anti-blue light film is represented by weight percentage: 95% of nano titanium dioxide sol, 4% of titanium dioxide powder and 1% of coumarin 540.
The method of making the composite lamp cover is the same as in example 1.
Example 5:
the utility model provides a prevent antifog compound lamp shade of blue light, includes the light-passing board, the top surface of light-passing board is provided with prevents the blue light membrane, prevent the blue light membrane including binding face and prevent the blue plain noodles, the binding face is glossy planeThe attaching surface is attached to the light-transmitting plate, the surface form of the blue-proof surface is a quasi-periodic nano-cone array, the diameter of the bottom of each nano-cone in the nano-cone array is 120nm, the cone angle is 25 degrees, the length-diameter ratio is 20, the curvature radius of the tip is 3.5nm, and the density of the nano-cone is 108cm-2. The composition of the anti-blue light film is represented by weight percentage: 92.4% of nano titanium dioxide sol, 7% of titanium dioxide powder and 0.6% of coumarin 540.
The method of making the composite lamp cover is the same as in example 1.
Example 6:
the utility model provides a prevent antifog compound lamp shade of blue light, includes the light-passing board, the top surface of light-passing board is provided with prevents the blue light membrane, prevent the blue light membrane including binding face and prevent the blue plain noodles, the binding face is glossy plane, the binding face laminate in the light-passing board, prevent the surface morphology on the blue plain noodles and be the nanometer awl array of quasiperiodic, every nanometer awl bottom diameter is 100nm in the nanometer awl array, and the cone angle is 30, and draw ratio is 20, and sharp portion curvature radius 2.5nm, and nanometer awl density is 108cm-2. The composition of the anti-blue light film is represented by weight percentage: 92.4% of nano titanium dioxide sol, 7% of titanium dioxide powder and 0.6% of coumarin 540.
The method of making the composite lamp cover is the same as in example 1.
A white light LED lamp purchased from the market is used as a light source, light emitted by the white light LED lamp passes through the embodiment, a light transmittance tester is used for detecting the blue light transmittance, the blue light prevention effect of the embodiment is evaluated by taking the blue light transmittance as an index, and a photoelectric haze meter is used for detecting the full light transmittance and the haze value, and the color development effect of the embodiment is evaluated by taking the full light transmittance and the haze value as the index; the antifogging property of the examples was evaluated by directly dropping 5. mu.L of water droplets on the examples and measuring the static water contact angle of the examples in air using a CAM-PLUS contact angle measuring instrument.
The blue light transmittance in the table can show that 6 embodiments have obvious blocking effect on blue light, the full light transmittance and the haze value can show that 6 embodiments do not affect the definition of visual objects and the judgment on colors of users basically, and the experimental result of the water contact angle shows that 6 embodiments have excellent hydrophilicity, namely excellent antifogging performance.
In the present invention, the method of applying the liquid material to the base material is not particularly limited, and may be a coating method known in the art, for example, a blade coating method, a spin coating method, a spray coating method, a bar coating method, and the like.
The preparation and experimental steps of the present invention were carried out at normal temperature and pressure unless otherwise specified.
The above embodiments do not limit the scope of the present invention, and those skilled in the art can make equivalent modifications and variations without departing from the overall concept of the present invention.
Claims (3)
1. The utility model provides a prevent antifog compound lamp shade of blue light, includes the light-passing board, its characterized in that the top surface of light-passing board is provided with prevents the blue light membrane, prevent the blue light membrane including binding face and prevent the blue plain noodles, the binding face is glossy plane, the binding face laminate in the light-passing board, the surface morphology of preventing the blue plain noodles is the quasi-periodic nanometer awl array, the composition of preventing the blue light membrane expresses according to weight percent: 90-95% of nano titanium dioxide sol, 4-9% of titanium dioxide powder and 0.1-1% of coumarin 540.
2. The blue light prevention and fog prevention composite lampshade according to claim 1, characterized in that the diameter of the bottom of each nanocone in the nanocone array is 100nm to 150nm, the cone angle is 20 degrees to 30 degrees, the length-diameter ratio is 15 to 25, the curvature radius of the tip is lower than 4nm, the density of the nanocones is 109cm-2-107cm-2。
3. A method for preparing the blue light prevention and fog prevention composite lampshade of claim 1, which is characterized by comprising the following steps:
1) preparing a nano cone array which is completely the same as the nano cone array on one plate surface of a copper substrate by a plasma etching technology, uniformly coating a chlorobenzene solution of polymethyl methacrylate with the mass concentration of 10% on the plate surface, then placing the copper substrate in a vacuum environment, heating to 200 ℃, preserving heat for 4 hours, taking out the copper substrate, naturally cooling, forming a polymethyl methacrylate film layer on the plate surface, separating the polymethyl methacrylate film layer from the copper substrate, and forming a recess corresponding to the nano cone array on the contact surface of the polymethyl methacrylate film layer and the copper substrate to obtain a template;
2) slowly adding concentrated hydrochloric acid into the nano titanium dioxide sol, wherein the dosage ratio of the nano titanium dioxide sol to the concentrated hydrochloric acid is 1:0.15-0.2, fully stirring to flocculate the nano titanium dioxide sol, carrying out centrifugal separation at 2000r/min for 10 minutes to obtain a gel A, adding ethanol into the gel A, wherein the dosage ratio of the gel A to the ethanol is 1:0.15-0.2, fully stirring, carrying out centrifugal separation at 2000r/min for 10 minutes to obtain an ethanol-treated gel B, adding the titanium dioxide powder and coumarin 540 into the gel B, and fully stirring at 400r/min for 10 minutes to obtain a liquid imprinting material;
3) according to the size of a light-transmitting plate, a proper amount of liquid imprinting material is uniformly coated on the top surface of the light-transmitting plate, one surface, with a recess, of the template is attached to the upper portion of the liquid imprinting material in a pressing mode, the template is completely filled with the liquid imprinting material, the template is imprinted for 6 hours under the conditions of 3MPa and 85 ℃, and after pressure is released, the template is dissolved by acetonitrile, so that the blue-light-proof and antifogging composite lampshade is prepared.
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| CN113446547A (en) * | 2021-08-06 | 2021-09-28 | 广东视康照明科技有限公司 | Blue light prevention method for LED blackboard lamp and LED blackboard lamp |
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| CN103245990A (en) * | 2012-02-08 | 2013-08-14 | 苏州锦富新材料股份有限公司 | Novel high-permeable and high-haze easy-to-clean diffusion plate and preparation method thereof |
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