KR101482144B1 - Manufacturing method for led illuminant chromaticity converting semi-spherical filter and led illumination chromaticity converting semi-spherical filter thereof - Google Patents

Abstract

The present invention relates to a method of manufacturing a hemispherical filter for LED light color conversion and a hemispherical filter for LED light color conversion. The method includes preparing a hemispherical shell and an endothelium vessel, The light diffusing body and / or the pigment are mixed and homogenized in a liquid UV curable matrix resin, and then the mixture is introduced into a hemispherical envelope vessel. The above-mentioned endothelium vessel is inserted into the envelope vessel and the homogenized mixture is mixed with the inner surface of the envelope vessel Filling the space between the regions defined by the outer surface of the inner vessel and forming a filter portion by UV curing instantaneously. According to the present invention, the phosphor mixture is uniformly distributed in a homogeneous component distribution state, It has a high degree of reproducibility and high process efficiency regardless of proficiency so that it has a gradient. That can be coated and, at the same time, failure is hardly a relatively expensive color conversion of the phosphor composition is lost or wasted for almost not have a high economic efficiency.

Description

TECHNICAL FIELD [0001] The present invention relates to a hemispherical filter for LED illumination color conversion, and a hemispherical filter for LED illumination color conversion. [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a hemispherical filter for LED light color conversion and a hemispherical filter for LED light color conversion according to the method and more particularly to a hemispherical filter for color conversion of a LED and a matrix resin, And a hemispherical shape for LED illumination color conversion which can easily and effectively cover the hemispherical filter surface with a homogeneous distribution of the composition, regardless of proficiency so as to have a uniform thickness or a controlled curve gradient A filter manufacturing method and a hemispherical filter for LED light color conversion manufactured thereby.

The LED is a light emitting device using a p-n junction structure of a semiconductor, and various types are known, such as a red light emitting device using GaAsP or the like, a green light emitting device using GaP or the like, and a blue light emitting device using an InGaN / AlGaN double hetero structure.

These LEDs have a relatively low power consumption due to their high light conversion efficiency, and they are suitable for miniaturization, thinning, and light weight, and can be installed infinitely, while the power consumption is relatively low and the light source is small. The lifetime of the lamp is very long, which is tens of thousands of hours, and since it is not a thermal or discharge luminescence, it does not require preheating, so that the response speed is quick, the lighting circuit is simple and the discharge gas and filament are not used. It is widely used for high-grade indoor and outdoor lighting because it has a high impact strength, is safe, has few environmental pollution inducing factors, can perform high repetition pulse operation, is less fatigue of the optic nerve, and can realize full color. Due to the commercialization of high-brightness LEDs that solve the problem of low brightness, which was a common problem of conventional LEDs, The use and the use place thereof are rapidly expanding.

In particular, white LEDs are very useful for indoor and outdoor high-end lighting, and their frequency of use is rapidly increasing, and it is expected to replace fluorescent lamps in the near future to occupy the majority of the lighting lamps in the near future as well as the market of incandescent lamps due to fluorescent lamps.

LEDs emitting various kinds of illumination light of various colors can be manufactured by using various kinds of phosphors for color conversion of various colors on LEDs of various colors. A typical example of the LEDs will be described as white light.

White LED of the exemplary form of the currently widely put to practical use is a InGaN-based blue LED yellow phosphors of the blue LED by coating a (usually yttrium-aluminum _{garnet:: Y 3 Al 5 O 12} Ce, YAG -based compound), or molding The blue light excites the YAG yellow phosphor to complementarily couple the blue light having the narrow peak of the blue LED with the yellow light having the broad peak due to the YAG yellow phosphor to enhance the white light , Which is disclosed in U.S. Patent No. 5,998,925 issued to Nichia.

In order to solve the low color rendering property of the white LED by the above-described blue LED and YAG-base phosphor, other types of white LEDs use a high-luminance UV LED having a wavelength of 250 to 390 nm as an excitation light source and a combination of red, green and blue phosphors A method of realizing a white light close to a natural color of three wavelengths with high color rendering properties is proposed in US Patent No. 5,952,681 of Solidlite.

Another type of white LED is to use a purple LED having a wavelength of 390-410 nm and to combine red, blue, and green phosphors to realize white light. The high-brightness purple LED has a red color by a purple light in the range of 390-410 nm , Blue and green phosphors emit light evenly and are known to emit white light having relatively high color rendering properties of relatively natural three wavelengths.

       However, since these white LEDs using phosphors are directly molded on the LED chip by directly coating the phosphor mixed resin on the LED chip or in the form of a sealing-type lens covering the LED chip, there is a problem in that it is inevitable to shorten the lifetime of the LED chip There is a problem in that it is difficult to control the homogeneous mixing of the phosphor and its uniform distribution and coating thickness.

As factors affecting the characteristics of the illumination light emitted from the white or various color LED using the phosphor, for example, the intensity of the emitted light from the LED, the suitability of the emitted light from the LED and the fluorescence converted by the phosphor, And the content and the dispersed state of the phosphor, and the emitted light is significantly influenced by these factors.

In order to obtain LEDs that emit illumination light with excellent luminescence characteristics, the phosphors should be homogeneously dispersed in the translucent matrix resin, but before the matrix resin is fully cured during the manufacturing process, the phosphors having a much larger specific gravity (Specific gravity of about 3.8 to 6.0) exhibits a heterogeneous distribution depending on the tendency of precipitation by gravity in a light-transmissive matrix resin (specific gravity of about 1.1 to 1.5 in the case of epoxy resin) having a small specific gravity. It is difficult to precisely control the dispersion degree of the phosphor, and in particular, when two or more kinds of phosphors are mixed, it is not easy to attain a homogeneous mixture distribution as a whole, so that it is easy to produce a high quality LED device or module And manufacturing reproducibility is not good There.

On the other hand, in an LED lighting device, an LED lens is widely used for the purpose of making parallel light emission, diffusion or convergence of LED light emission by voltage application, and the LED type and power used, the purpose of use, Light intensity, and the like, depending on various parameters, it can be appropriately selected from a wide variety of shapes and sizes.

In recent years, various types of LEDs have been proposed, which function as a filter for LED color conversion and / or a lens by being positioned at a spatially separated position from the LED chip in consideration of heat dissipation while functioning as a lens as described above have.

Accordingly, it is a first object of the present invention to provide a method of forming a mixture comprising at least one kind of phosphor for color conversion and a transparent matrix resin, or a mixture including a light diffusing body and / The present invention provides a method of manufacturing a hemispherical filter for LED illumination color conversion, which can be easily and easily covered with a component distribution state.

A second object of the present invention is to provide a method for preparing a mixture comprising at least one color conversion fluorescent substance and a transparent matrix resin, or a mixture including at least one kind of light diffusing agent and / Which can be easily and easily coated so as to have a uniform thickness or a controlled curvature gradient in forming a hemispherical filter portion.

A third object of the present invention is to provide a method of manufacturing a hemispherical filter for LED illumination color conversion, which has high reproducibility and high process efficiency irrespective of proficiency.

A fourth object of the present invention is to provide a method of manufacturing a hemispherical filter for LED light-color conversion, which has a high economic efficiency because there is little loss or waste of a phosphor composition for LED light-color conversion having little defects and relatively high cost.

A fifth object of the present invention is to provide a method of manufacturing a hemispherical filter for LED illumination color conversion, in which there is little fear of degradation of the phosphor due to heat, moisture, and non-radiation.

A sixth object of the present invention is to provide a hemispherical filter for LED illumination color conversion manufactured by the manufacturing method according to the above-described objects.

According to a preferred embodiment of the present invention for achieving the above first to fifth objects of the present invention, there is provided a method of manufacturing a honeycomb structure comprising (A) at least one hemispherical envelope vessel, Preparing a hemispherical endothelial vessel, (B) separately from at least one kind of LED light-emitting color conversion fluorescent substance in a liquid UV-curable matrix resin and stirring the mixture to homogenize the mixture, (C) introducing the homogenized mixture into the envelope vessel, (D) inserting the homogenized mixture into the envelope vessel into which the homogenized mixture has been introduced, and inserting the homogenized mixture into the inner surface of the envelope vessel and the inner vessel Filling an area defined by the outer surface of the bezel, and (E) UV-curing the homogenized mixture. It is provided.

According to another aspect of the present invention, there is provided a method of manufacturing an air venting device, comprising the steps of: (A) providing at least one Preparing a hemispherical envelope vessel of the hemispherical vessel and at least one hemispherical endomex vessel consisting of a neck and an extension capable of elongating the area by blowing; (C) adding the homogenized mixture into the envelope vessel as described above, and (C) mixing the homogenized mixture into the above-described envelope vessel, And (D) inserting the neck of the endothelial vein into the neck of the sheath vessel into which the homogenized mixture has been injected, and (E) Filling the homogenized mixture between the inner surface of the sheath vessel and the region defined by the outer surface of the extension portion of the endothelium vessel through volume increase of the sheath; and (F) UV curing the homogenized mixture A method of manufacturing a hemispherical filter for LED illumination color conversion is provided.

Here, the width of the region defined by the inner surface of the outer casing and the outer surface of the inner casing, that is, the distance between the inner surface of the casing and the outer surface of the inner casing is in the range of 5 탆 to 5 mm.

In addition, a flange is formed in the above-mentioned endothelium vessel and is supported on the periphery of the outer vessel vessel.

The flange may be provided with at least one groove or slit for air venting.

When the above-mentioned homogenized mixture is inserted between the inner surface of the sheath vessel and the region defined by the outer surface of the inner vessel, by inserting the above described endophytic vessel into the sheath vessel into which the homogenized mixture in the step (D) , The homogenized mixture flowing out to the outside through the groove or the slit by the pressure can form the protrusion.

Here, a plurality of spacers may be formed on the bottom surface of the flange so as to be supported inside the peripheral end portion of the outer casing.

The filter portion formed between the outer vessel vessel and the inner vessel may have the same thickness over the entire region.

The distance between the inner surface of the outer vessel vessel and the outer surface of the inner vessel is gradually decreased from the periphery of the inner vessel to the hemispherical vertex so that the filter unit formed between the outer vessel vessel and the inner vessel is formed with a concave lens As shown in FIG.

The distance between the inner surface of the outer vessel vessel and the outer surface of the inner vessel is gradually increased from the periphery of the inner vessel to the hemispherical apex to form a convex lens between the outer vessel and the inner vessel. As shown in FIG.

The above-mentioned endothelium-containing bezel may be formed by arranging a plurality of the endovascular vessels fixed on the frame by a connection bridge.

Also, the envelope vessel may be formed in a plurality of arrangements fixed on a frame having a stepped portion by a connecting bridge.

The endothelial vein and the sheath vessel are formed of a transparent or semitransparent heat-resistant resin.

The above-mentioned endothelial vessels and sheath vessels may be made of polycarbonate, silicone, polymethyl pentene, polyether sulfon, polyether imide, polyarylate, , Or polymethyl methacylate.

The UV curable matrix resin may also be a silicone acrylate, a polybutadiene acrylate, a urethane acrylate, an epoxy acrylate, a polyester acrylate, or an acryl acrylate.

In addition, the homogenized mixture may include light diffusing beads having an average particle diameter of 0.2 to 50 μm, preferably 0.5 to 5 μm, particularly 1.0 to 3.5 μm.

The homogenized mixture may also comprise a pigment.

According to a preferred embodiment of the present invention to achieve the above-mentioned sixth object of the present invention, a hemispherical outer vessel and an endothelium vessel are provided. There is provided a hemispherical filter for LED illumination color conversion, in which at least one kind of LED light-emitting color conversion fluorescent substance and a filter unit composed of a matrix resin are integrally formed between the outer vessel vessel and the inner vessel vessel.

The filter unit is formed such that the distance between the inner surface of the envelope vessel and the outer surface of the inner vessel is gradually decreased from the peripheral portion of the envelope vessel to the hemispherical apex of the inner vessel, May be formed of a concave lens.

The filter unit may be formed such that the distance between the inner surface of the envelope vessel and the outer surface of the inner vessel is gradually increased from the outer periphery of the envelope vessel to the hemispherical apex of the inner vessel, May be formed of a convex lens.

Necks may be formed in each of the sheath vessel and the endothelium vessel, and the expanded portion of the endothelium vessel may be formed of a soft silicone resin.

The filter portion may include a light diffuser and / or a pigment.

The method for producing a hemispherical filter for LED light-color conversion according to the present invention is a method for producing a hemispherical filter for converting a color of at least one kind of LED light-emitting color converting phosphor, and optionally a mixture of a light diffusing material or pigment and a transparent matrix resin into a hemispherical filter, It is possible to easily and easily cover the material in a distributed state with high reproducibility and high process efficiency regardless of proficiency so as to have a uniform thickness or a controlled curve gradient, There is little loss or waste of the phosphor composition for conversion and it has high economical efficiency. Since the hemispherical filter for LED light-color conversion according to the present invention is located at a distance from the LED chip, there is less concern about deterioration of the phosphor due to heat, moisture and non-radiation.

1 is an explanatory view showing a method of manufacturing a hemispherical filter for LED light-color conversion according to the present invention.
Fig. 2 is a perspective view of the envelope and the endothelium vessel in Fig. 1. Fig.
Figure 3 is another perspective view of the endothelium.
4 is a cross-sectional view showing the state in which the endothelium vessel of FIG. 3 is attached to the sheath vessel.
5 and 6 are cross-sectional side views of a hemispherical filter structure for LED light-color conversion for both convex or concave lenses through changes in the shape of the sheath vessel.
FIGS. 7 and 8 are side cross-sectional views, respectively, of a semi-spherical filter structure for LED light-color conversion combined with convex or concave lenses through changes in the shape of the endothelium vessel.
FIGS. 9 and 10 are other explanatory diagrams showing a method of manufacturing a hemispherical filter for LED light-color conversion for a convex or concave lens according to the present invention, respectively.
FIGS. 11 and 12 are photographs and side views of a bottom surface view of the hemispherical filter for LED light-color conversion according to the present invention manufactured by the manufacturing method according to the present invention, respectively.
13 is a photograph showing changes in LED illumination color conversion and light directing angle when the hemispherical filter for LED illumination color conversion according to the present invention is applied.

First, the term " semi-spherical " used throughout the specification of the present invention does not mean rigid hemispherical shape, but rather refers to a hemisphere or a similar dome, a wide Is defined as meaning.

Also, the terms 'outer vessel' and 'inner vessel', which are widely used in this specification, refer to a sheath, such as a sheath integrally coupled to support the hemispherical filter portion from the outside and the inside, respectively (Support) structure.

The term " filter " used in the specification of the present invention includes a hemispherical envelope vessel and a hemispherical endoscope vessel, and the hemispherical filter unit supported therebetween. The term " filter " The term " member "

Here, the term 'hemispherical filter unit' means that at least one kind of arbitrary LED light-emitting color conversion phosphor is homogeneously distributed in a matrix resin, and has uniform and uniform thickness throughout the entire region Of course, it is defined as a light including a function of a convex lens or a concave lens having a gradual curvilinear or linear gradient, and refers to a portion that functions as a pure PET filter except the envelope and the endothelium in the filter described above .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

1 is a conceptual explanatory view showing a manufacturing method of the hemispherical filter 1 for LED illumination color conversion according to the present invention. According to the illustrated method, a hemispherical endothelium vessel 2 having a flange 2c, 3). At the same time, at least one kind of LED light-emitting color conversion fluorescent material is mixed in a liquid UV curable matrix resin and stirred to put the homogenized mixture 10 into the outer vessel vessel 3 The homogenized mixture 10 is introduced into the outer vessel vessel 3 into which the homogenized mixture 10 is introduced and the homogenized mixture 10 is introduced into the outer surface of the outer vessel vessel 3 and the outer surface of the inner vessel vessel 2 Filling the space between the regions defined by the surface, and temporarily curing the homogenized mixture 10 by ultraviolet irradiation from the outside to mold the filter portion 8 for LED illumination color conversion.

Therefore, the hemispherical filter 1 for LED light-color conversion according to the present invention comprises a hemispherical envelope vessel 3 and a hemispherical endobe vessel 2, at least one kind of LED light-emitting color conversion phosphor and a filter made of a matrix resin (8) are integrally formed.

The distance between the inner surface of the envelope vessel 3 and the outer surface of the inner vessel 2, that is, the distance between the inner surface of the envelope vessel 3 and the outer surface of the inner vessel 2, But is not limited to the present invention, and is optionally in a range of 5 mu m to 5 mm in general.

In the illustrated example, the filter unit 8 formed between the outer vessel vessel 3 and the inner vessel 2 is formed to have the same thickness over the entire area.

In the figure, reference numeral 2a denotes a hemispherical portion of the endothelium vessel 2, 2b is an inner circumferential portion, 3b is a peripheral end of the sheath vessel 3, and the endothelium vessel 2 is inserted into the sheath vessel 3 The peripheral end portion 3b of the envelope vessel 3 is held in contact with the bottom surface of the flange 2c of the endoscope vessel 2. [

In the present invention, the material of the inner vessel 2 and the outer vessel 3 is not particularly limited. However, it is preferable that the material is heat-resistant resin having transparency or translucency which is heat resistant and is not easily deteriorated by the operating heat of the LED. Examples of the heat resistant resin include polycarbonate, silicone, polymethyl pentene, polyether sulfon, polyether imide, polyarylate, Polymethyl methacylate may be preferred, and polycarbonate may be preferred in terms of moldability and economy.

As the UV curable matrix resin for uniformly distributing the phosphor in the matrix resin by instant curing the matrix resin before the precipitation of the phosphor having a relatively large specific gravity progresses, there can be used silicon acrylate, polybutadiene acrylate, Urethane acrylate, epoxy acrylate, polyester acrylate, or acryl acrylate.

For example, when the phosphor for LED light-color conversion is applied to a blue LED chip, a yellow phosphor alone or a mixed phosphor of yellow and red may be used. In the case where yellow and red mixed phosphors are used, the mixing ratio thereof is not limited You can choose from a wide range of options depending on the color you want.

The total amount of the above LED light-emitting color-converting phosphors is used in an amount of about 0.1 to 35% by weight based on the total amount with respect to the matrix resin, and less than 0.1% by weight is not preferable because it is difficult to obtain a desired color or color temperature. It is not economical, and there is a possibility that the luminance is unevenly distributed, and the luminance may be excessively lowered, which is also undesirable.

Optionally, a green phosphor may be included to enhance the color rendering property as required.

On the other hand, when applied to a purple LED chip or an ultraviolet LED chip, it is the same as above. However, when it is converted into a white light source, it is necessary to radiate the wavelength of blue band, and therefore it is necessary to add a blue phosphor.

Examples of the yellow phosphor include (YGd) ₃ Al ₅ O ₁₂ : Ce, (YGd) ₃ (AlGa) ₅ O, and _{12: Ce, Sr 2 Ga 2} S 5: Eu 2 +, Sm 3 Al 5 O 12: Ce, Tb 3 Al 5 O 12: Ce, (Sr 1 -x- y Ba x Ca y) 2 SiO 4: Eu ^{2 + F (0≤x≤0.8, 0≤y≤0.8)} , (Y 1 - r Sm r, Gd 1 - r Sm r) 3 (Al 1 -s Ga s) 5 O 12: Ce (0≤r 1, 0? S? 1), (Y _{1 -xy- z} Ce _x Tb _y Gd _z ) ₃ Al ₅ O ₁₂ (0.008≤x≤0.05, 0.005≤y≤0.06, 0.01≤z≤0.06, x + y + z <0.21), (Sr 1 -xy (Mg, Ca, Ba) x) 2 SiO 4: Eu y (0≤x <1, 0.001≤y≤0.3, Z is _{1 ~ 5), Ca 0 .75} Eu 0 .25 Si 8 .625 Al3.375O 1 .125 N 14 .87, (Ca, Sr, Mg, Ce, Eu, Gd, Tb, Yb, and Lu) La ₃ Si ₈ N ₁₁ O ₄ are added to the SiAlN _{w- δ} O _δ : Ce ^{3 +} (W = .

On the other hand, from the viewpoint of high luminance, it is preferable that (YGd) ₃ Al ₅ O ₁₂ : Ce, (YGd) ₃ (AlGa) ₅ O ₁₂ : Ce, Sm ₃ Al ₅ O ₁₂ : Ce, Tb ₃ Al ₅ O ₁₂ : Ce, _{1 -s Ga s) 5 O 12} : Ce (0≤r <1,0≤s≤1), (Y 1 -xy- z Ce x Tb y Gd z) 3 Al 5 O 12 (0.008≤x≤0.05 , 0.005? Y? 0.06, and 0.01? Z? 0.06) may be preferably used as an auxiliary.

The red phosphor is not particularly limited as long as it emits a wavelength in the range of 630 to 700 nm by excitation at 250 to 450 nm. For example, Y ₂ O ₂ S: Eu, Gd, Li ₂ TiO ₃ : Mn, LiAlO ₂ : Mn, 6MgO and ^{_{As 2 O 5: Mn 4 +}} , 3.5MgO 0.5MgF and ₂ and GeO _2: Mn ^{4 +,}

_{Ba 1 .746 Ca 2 .134 Si 6} N 10 .08 O 0 .92: Eu 0 .04, Ce 0 .08 Sr 3 SiO 5: Eu, CaS: Eu, Sr x Ba y Ca 1 -x- y AlSiN _{3: Eu (0≤x + y≤1,} 0≤x, y≤1), Sr x Ba y Ca 2-xy S: Eu (0≤x + y≤2), Y (Ba, Sr, Ca) _{1-x Eu xa Si b O} c N d (0 <x <1, 1.8 <a <2.2, 4.5 <b <5.5, 0≤c <8, 0 <d≤8 and 0 <c + d≤8) .

In addition, if the green phosphor has the added particular limitation long as it is excited at 250 ~ 450nm radiation of 500 ~ 540nm range of wavelengths is not, for example, _{ZnS: Cu, Al, Ca 2} MgSi 2 O 7: Cl, Y 3 (Ga x _{Al 1 -x) 5 O 12:} Ce (0 <x <1), La 2 O 3 and _{11Al 2 O 3: Mn, Ca} 8 Mg (SiO 4) 4 C 12: Eu, Mn, Sr 2 SiO 4: _{Eu, Ba 2 SiO 4: Eu} , Ca 2 SiO 4: Eu, SrGa 2 S 4: Eu, BaGa 2 S 4: Eu, CaGa 2 S 4: Eu, Sr 2 Ga 2 S 5: Eu, SrAl 2 S 4 Eu, BaAl ₂ S ₄ : Eu, Sr ₂ Al ₂ S ₅ : Eu, Ba ₂ MgSi ₂ O ₇ : Eu, Ba ₂ ZnSi ₂ O ₇ : Eu, BaAl ₂ O ₄ : Eu, SrAl ₂ O ₄ : Eu _{, BaMgAl 10 O 17: Eu,} Mn 2+, and _{BaMg 2 Al 16 O 27: Eu} , Mn 2 +, (Ca, Sr, Mg, Ln) SiAlN 2 O: Ce 3 +, Eu 0 .0029 Si 0. ₄₀₄₂₇ Al _{0 .0121} O _{0 .02679} N _{0 .5539} .

In addition, when applied to a purple LED chip or ultraviolet LED chip, the blue phosphor is not particularly limited as long as it emits a wavelength in the range of 420 to 480 nm by being excited at 250 to 450 nm. For example, Sr ₃ MgSi ₂ O ₈ : Eu, Ba ₃ MgSi _{2 O 8: Eu, SrS:} Ce, CaS: Ce, CaAl 2 S 4: Eu, (Sr, Ba, Ca) 5 (PO 4) 3 Cl: Eu, BaMg 2 Al 16 O 27: Eu, Sr 4 Al _{14 O 25: Eu, BaAl 8} O 13: Eu, (Sr, Mg, Ca, Ba) 5 (PO 4) 3 Cl: Eu, BaMgAl 10 O 17: Eu, Sr 2 Si 3 O 82 SrC l2: Eu and , Ce _{0 .000951} Si _{0 .40894} Al _{0 .021715} O _{0 .0014265} N _{0 . 566968} .

In addition, when the obtained illumination light is a white light, it can be easily and easily adjusted within a color temperature range of 3000 to 7000K according to various lighting conditions such as a user's taste and a desired atmosphere.

Examples of the light diffusing material which may be optionally added include silicon resin (refractive index 1.43), polyacrylate (refractive index 1.49), polyurethane (refractive index 1.51), polyethylene (refractive index 1.54 ), Homopolymers such as polypropylene (refractive index 1.46), nylon (refractive index 1.54), polystyrene (refractive index 1.59), polymethylmethacrylate (refractive index 1.49), polycarbonate An organic light-diffusing agent such as a polymer or a copolymer of monomers thereof; Silica (silica: refractive index 1.47), alumina (alumina: refractive index of 1.50 ~ 1.56), a glass (glass: refractive index 1.51), calcium carbonate (CaCO _3: refractive index 1.51), talc (talc: refractive index 1.56), mica (mica: refractive index 1.56 ), Barium sulfate (BaSO ₄ : refractive index 1.63), zinc oxide (ZnO: refractive index 2.03), cesium oxide (CeO ₂ : refractive index 2.15), titanium dioxide (TiO ₂ : refractive index 2.50 to 2.71) A light diffusing agent, or any mixture thereof.

When the above-mentioned light diffusing material is added, an average particle diameter of 0.2 to 50 탆, preferably 0.5 to 5 탆, specifically, 1.0 to 3.5 탆 is used.

If necessary, inorganic or organic pigments may also be included according to preference such as light color or color temperature.

Examples of such pigments include various known pigments such as nitro pigments, azo pigments, indanthrene pigments, thioindigo pigments, perylene pigments, dioxazine pigments, quinacridone pigments, phthalocyanine pigments and quinophthalone pigments Can be used.

2 is a perspective view according to one embodiment of the endothelium vessel 2 and the sheath vessel 3 in Fig. 1, wherein the endothelium vessel 2 is connected to a frame 5 via a connecting bridge A plurality of air venting groove portions 2d are formed in the flange 2c of the end fitting vessel 2 to form a plurality of air venting groove portions 2d, 8) can be formed without voids. Likewise, the envelope vessel 3 is also formed in such a manner that a plurality of the vessel vessels 3 are fixed on the frame 6 having the step portion 6b by the connecting bridge 6a Respectively.

A frame 5 having a plurality of inner vessels 2 is mounted on a frame 6 on which a plurality of outer vessels 3 are formed so that a hemispherical filter 1 in FIG. 1) can be produced simultaneously at a high efficiency and economically, and the connection bridges 5a and 6a are then removed.

3 is another perspective view of the endothelium vessel 2 in which at least one slit 2f for air venting is formed on the flange 2c and a plurality of spacers 2c are formed on the bottom surface of the flange 2c. a spacer 2e is formed and is supported inside the peripheral edge 3b of the outer casing 3 to maintain a predetermined distance therebetween.

Fig. 4 is a sectional view showing the state in which the endothelium vessel 2 of Fig. 3 is attached to the sheath vessel 3. The sheath is then inserted into the sheath vessel 3 into which the homogenized mixture (refer to reference numeral 10 in Fig. 1) When the homogenized mixture is filled between the inner surface of the sheath vessel 3 and the outer surface of the inner vessel 2 by inserting the endophytic vessel 2 into the homogenized mixture, The homogenized mixture flowing out to the outside through the slit 2f by the control of the insertion depth of the inner vessel and the inner pressure of the inner vessel can be formed by instantaneous UV curing to form the protrusion 4, One projecting portion 4 may serve as a coupling piece when the hemispherical filter 1a for LED color conversion according to the present invention is mounted around the LED chip (not shown).

5 and 6 are side cross-sectional views, respectively, of the structure of hemispherical filters 1b and 1c for LED illumination color conversion for convex or concave lenses through change in shape of the envelope vessel 3. In the case of FIG. 5, The distance between the inner surface of the inner vessel 3 and the outer surface of the inner vessel 2 is gradually decreased from the peripheral edge 3b of the outer vessel 3 to the hemispherical vertex of the inner vessel 2, 6 shows a case in which the filter unit 8 formed between an outer sheath vessel 3 and an inner end vee shell 2 is formed to form a concave lens. In the case of FIG. 6, The distance between the outer surface of the inner vessel 2 and the outer surface of the outer vessel 3 is gradually increased from the peripheral edge 3b of the outer vessel 3 to the hemispherical vertex of the inner vessel 2, The filter portion 8 formed between the inner casing 2 and the inner casing 2 is a convex lens It shows a case in which that property.

5 and 6 show a case in which the radius of curvature of the hemispherical portion 3a of the casing vessel 3 is changed without changing the shape of the hemispherical portion 2a of the inner vessel 2.

 7 and 8 show the structures of the hemispherical filters 2c and 2d for converting LED color light, which are both convex or concave lenses, through the shape change of the endothelium vessel 2, respectively, unlike the case of FIGS. 5 and 6 7, the distance between the inner surface of the envelope vessel 3 and the outer surface of the inner vessel 2 is the same as the distance between the peripheral edge 3b of the envelope vessel 3 and the outer surface of the inner vessel 2, A filter portion 8 formed between the outer vessel vessel 3 and the inner vessel 2 is formed to be gradually reduced from the peripheral portion to the hemispherical peak to form a concave lens. The distance between the inner surface of the outer vessel vessel 3 and the outer surface of the inner vessel 2 gradually increases from the peripheral edge portion 3b of the outer vessel vessel 3 to the hemispherical vertex of the inner vessel vessel 2, The outer casing 3 and the inner casing 2 are formed to be long, A filter part (8) formed thereto shows a case in which to form the convex lenses.

7 and 8 show a case in which the radius of curvature of the hemispherical portion 2a of the endothelium vessel 3 is changed without changing the shape of the hemispherical portion 3a of the envelope vessel 3, respectively.

9 and 10 are other explanatory diagrams showing a manufacturing method of the hemispherical filters 1f and 1g for LED color conversion for use as convex or concave lenses according to the present invention, respectively.

The method for manufacturing the hemispherical filter 1f for LED light-color conversion as shown in Fig. 9 includes a hemispherical sheath vessel 3 having a neck 3c formed with a slit 3d for air venting, a neck 2g, , A hemispherical endothelium vessel (2) having an enlarged portion (2h) capable of expanding its area by means of a liquid-phase UV-curable matrix resin is prepared, and at least one kind of LED color- And the neck 2g of the endothelium vessel 2 is inserted into the neck 3c of the sheath vessel 3 after the sheath 10 is inserted into the sheath vessel 3, The homogenized mixture 10 is introduced into the outer vessel vessel 3 through the neck 2g of the inner vessel vessel 2 by increasing the volume of the expanding section 2h by blowing from the upper side through the neck 2g. And the outer surface of the expanded portion 2h of the endothelium vessel 2, And the filter portion 8 is formed so that the distance between the inner surface of the envelope vessel 3 and the outer surface of the extension portion 2h of the inner vessel 2 is larger than the outer surface The filter unit 8 formed between the outer vessel vessel 3 and the inner vessel vessel 2 is formed to gradually increase in length from the peripheral edge of the vessel 3 to the hemispherical vertex of the inner vessel vessel 2, .

The neck 2g of the endothelium vessel 2 is formed of a heat resistant resin such as polycarbonate while the extended portion 2h of the endothelium vessel 2 is formed by double injection molding with a soft silicone resin, And is formed to perform the same function.

The method of manufacturing the hemispherical filter 1g for LED illumination color conversion shown in Fig. 10 is different from that of Fig. 9 in that the neck 3c of the envelope vessel 3 is provided with the neck of the above- 9 (a) and 9 (b), except that the endotracheal tube 2g is inserted and then inverted and then blown from below through the neck 2g of the endothelium vessel 2 described above, So that the distance between the inner surface of the envelope vessel 3 and the outer surface of the extension portion 2h of the inner vessel 2 is substantially the same as that of the outer envelope 3 The filter unit 8 formed between the outer vessel vessel 3 and the inner vessel vessel 2 is formed in a concave lens shape so as to gradually decrease from the periphery of the inner vessel vessel 3 to the hemispherical vertex of the inner vessel vessel 2, .

Figs. 11 and 12 are photographs and side views of the hemispherical filter 1a for LED light-color conversion according to the present invention, respectively, produced by the manufacturing method according to the present invention, A flange 2c is formed on the periphery of the inner skin 7 and a plurality of protrusions 4 are formed on the flange 2c so that the hemispherical filter for LED color- 1a as shown in Fig.

Lastly, FIG. 13 is a photograph showing changes in LED illumination color conversion and light directing angle when the hemispherical filter 1a for LED illumination color conversion according to the present invention is applied.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention Which is also within the scope of the present invention.

1, 1b, 1c, 1d, 1e, 1f, 1g: hemispherical filter for LED illumination color conversion according to the present invention
2: inner vessel
2a: a semi-spherical part 2b: a (peripheral)
2c: flange 2d groove portion
2e: spacer 2f: slit
2g: neck 2h: extension part
3: outer vessel
3a: hemispherical portion 3b: peripheral (short) portion
3c: neck 3d: slit
3e: spherical portion
4:
5: Frame 5a: Connection Bridge
6: Frame 6a: Connection Bridge
6b:
7: envelope 8: filter section
9: Endothelium
10: Phosphor mixed matrix resin (mixture)

Claims (23)

delete A method for manufacturing a hemispherical filter for LED light color conversion comprising the steps of:
(A) at least one hemispherical envelope vessel having a neck formed with a slit for air venting, and a plurality of hemispherical shell vessels, each of which can be stretched by necking and blowing Preparing an at least one hemispherical endothelium vessel comprising an expanding portion;
(B) separately from at least one kind of LED light-emitting color conversion fluorescent material in a liquid UV-curable matrix resin and stirring the mixture to homogenize the mixture;
(C) injecting the homogenized mixture into the envelope vessel;
(D) inserting the neck of the endothelial vessel into the neck of the sheath vessel into which the homogenized mixture has been injected;
(E) filling the above-mentioned homogenized mixture between the inner surface of the envelope vessel and the region defined by the outer surface of the extension portion of the endothelium vessel through volume expansion of the dilation portion by blowing through the neck of the endothelium vessel step; And
(F) UV-curing the homogenized mixture to form a filter portion. The method according to claim 2, wherein the distance between the inner surface of the envelope vessel and the outer surface of the inner vessel is 5 to 5 mm. delete delete delete delete delete [3] The method according to claim 2, wherein the distance between the inner surface of the outer vessel vessel and the outer surface of the inner vessel is gradually decreased from the peripheral portion of the inner vessel to the hemispherical apex of the outer vessel to be formed between the outer vessel and the inner vessel Wherein the filter portion forms a concave lens. 3. The method according to claim 2, wherein the distance between the inner surface of the outer vessel vessel and the outer surface of the inner vessel is gradually increased from the periphery of the inner vessel to the hemispherical apex of the outer vessel to be formed between the outer vessel and the inner vessel And the filter portion forms a convex lens. [3] The method according to claim 2, wherein a plurality of the endive vessels are fixedly arranged on the frame by a connection bridge. The method according to claim 2, wherein a plurality of the envelope vessels are fixedly arranged on a frame having a stepped portion by a connection bridge. The method according to claim 2, wherein the inner vessel and outer vessel are formed of a heat-resistant resin that is transparent or semitransparent. 14. The method of claim 13, wherein the endovascular vessel and the sheath vessel are selected from the group consisting of polycarbonate, silicone, polymethyl pentene, polyether sulfon, polyether imide, Wherein the resin is formed of one kind of resin selected from the group consisting of polyarylate, polymethyl methacrylate, and polymethyl methacrylate. The method according to claim 2, wherein the UV curable matrix resin is one kind of resin selected from the group consisting of silicone acrylate, polybutadiene acrylate, urethane acrylate, epoxy acrylate, polyester acrylate, and acryl acrylate Method for manufacturing hemispherical filter for LED light color conversion. 3. The method of claim 2, wherein the homogenized mixture comprises light diffusing beads. 3. The method of claim 2, wherein the homogenized mixture comprises a pigment. delete delete delete delete delete delete

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