KR20170017457A - Yellow light emitting device, illuminating apparatus comprising the same and apparatus for eliminating harmful insect comprising the same - Google Patents
Yellow light emitting device, illuminating apparatus comprising the same and apparatus for eliminating harmful insect comprising the same Download PDFInfo
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- KR20170017457A KR20170017457A KR1020150111393A KR20150111393A KR20170017457A KR 20170017457 A KR20170017457 A KR 20170017457A KR 1020150111393 A KR1020150111393 A KR 1020150111393A KR 20150111393 A KR20150111393 A KR 20150111393A KR 20170017457 A KR20170017457 A KR 20170017457A
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- molding resin
- yellow
- blue led
- emitting device
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M1/00—Stationary means for catching or killing insects
- A01M1/02—Stationary means for catching or killing insects with devices or substances, e.g. food, pheronones attracting the insects
- A01M1/04—Attracting insects by using illumination or colours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/12—Passive devices, e.g. 2 terminal devices
- H01L2924/1204—Optical Diode
- H01L2924/12041—LED
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Pest Control & Pesticides (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Insects & Arthropods (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Led Device Packages (AREA)
Abstract
The present invention relates to a yellow light emitting device, a lighting device including the same, and a pest control device. The present invention relates to a blue LED; And a molding resin layer formed on the blue LED to remove blue light emitted from the blue LED and emit yellow light. The molding resin layer includes 60 to 83% by weight of a molding resin and 17 to 40% by weight of a yellow phosphor. According to the present invention, the blue LED is used as an excitation light source, and the blue light emitted from the blue LED is removed to emit yellow of a high luminance which does not harm the safety of the eyes and the biorhythm, for example. In addition, blue light of short wavelengths preferred by insect pests is removed, and yellow light of a long wavelength band, which pests do not like, is emitted to effectively prevent insect access.
Description
The present invention relates to a yellow light emitting device, a lighting device and a pest control device including the same, and more particularly to a light emitting device including a blue LED as an excitation light source and removing blue light in a short wavelength region emitted from the blue LED, (EN) A yellow light emitting device having a pest control function without harming a living body rhythm and the like and having excellent luminance and luminous efficiency, a lighting device including the same, and a pest control device.
BACKGROUND ART A light emitting device using a light emitting diode (LED) has advantages such as low power consumption, long life, and environment friendliness. Accordingly, a light emitting device using an LED has been widely used as a light source such as various display devices and backlight as well as an illumination device, and the demand thereof is rapidly increasing.
Most light emitting devices using LEDs use a blue LED as an excitation light source. The blue LED can realize a light emitting device having high luminance and various colors. For example, a white light emitting device emitting white light may be implemented by combining a red LED chip and a green LED chip with a blue LED, or a method of combining one or more phosphors with a blue LED. However, in the case of a method of combining a plurality of LED chips, the operating voltage may be uneven in each chip, and the output of the chip may vary depending on the voltage, so that the color coordinates may be different.
Accordingly, a method of combining a phosphor with a blue LED is preferred as a white light emitting device. For example, when a blue LED is combined with a yellow phosphor, or when a blue LED is combined with a red phosphor and a green phosphor, white synthetic light may be emitted. Such a light emitting device is generally manufactured by preparing a molding resin composition in which fluorescent particles are mixed with a liquid molding resin and then coating the molding resin composition on a blue LED so as to surround the blue LED and then curing .
For example, Korean Patent Laid-Open No. 10-2013-0122383, Korean Patent Laid-open No. 10-2013-0041647, and Korean Patent Laid-Open No. 10-2013-0114570 disclose techniques related to the above.
The blue LED is also applied to an insect repellent device for eliminating insects such as mosquitoes and moths. For example, Korean Patent Registration No. 10-1300620 discloses a light emitting unit which forms a red fluorescent layer and a green fluorescent layer on a blue LED and emits white light of a specific wavelength band to prevent access to pests.
As described above, most light emitting devices are based on a blue LED as an excitation light source. However, it is pointed out that a blue light (usually, a blue light) emitted from a product based on a blue LED, for example, a product such as a mobile phone, a monitor, a TV, and LED lighting may adversely affect the human body. That is, blue light (usually blue light) has a problem that it disturbs the biorhythm by, for example, damaging the retina or optic nerve of the eye or stimulating the sympathetic nerve.
In addition, blue light has been reported to inhibit the secretion of melatonin. Melatonin is a sleep inducing hormone that regulates the body's rhythm and allows it to sleep at night. When melatonin is exposed to blue light (blue light), synthesis amount and secretion are lowered to cause insomnia as well as various cancers Research has been reported.
Therefore, a product based on a blue LED needs to remove blue light (blue light) for at least the safety of the eyes and the protection of the biorhythm.
On the other hand, Korean Patent No. 10-1490233 discloses a phosphor monochrome LED using a filter for removing blue light though it is not for the above purpose. Specifically, Korean Patent No. 10-1490233 discloses a single-color LED having a long-wavelength transmittance filter having a plurality of thin films having different refractive indexes to reflect blue light and transmit long wavelength light.
However, when a filter is used, a considerable portion of the light energy is removed at the same time, and the luminance of the light emitting device is lowered. In addition, when a filter is used, a manufacturing process of a filter, an installation process thereof, and the like are required, which complicates the entire manufacturing process of the light emitting device and raises the price. In addition, it is pointed out that the installation of the filter increases the volume and makes it difficult to make the light emitting device compact.
In addition, it is difficult for a conventional insect pest control device using a blue LED to effectively pest insects. That is, as described above, the conventional insect repellent device emits white light in a long wavelength band that the insect does not like, and implements the insect pest control. However, since the blue light in the short wavelength band, There is a problem that it is difficult to effectively get rid of it.
Accordingly, it is an object of the present invention to provide an improved light emitting device, a lighting device including the improved light emitting device, and a pest control device.
According to one embodiment of the present invention, there is provided a yellow light emitting device having a blue LED as an excitation light source, the blue light emitted from the blue LED being removed and having excellent luminance and luminous efficiency, and the like And to provide a lighting device and a pest control device that are capable of controlling a lighting effect.
Further, according to another embodiment of the present invention, there is provided a yellow light emitting device having improved moldability and adhesiveness of a phosphor and having excellent reliability, a lighting device including the same, and a pest control device .
According to a first aspect of the present invention,
Blue LED; And
And a molding resin layer formed on the blue LED to remove blue light emitted from the blue LED and emit yellow light,
Wherein the molding resin layer comprises 60 wt% to 83 wt% of a molding resin and 17 wt% to 40 wt% of a yellow phosphor.
According to a second aspect of the present invention,
Blue LED;
A transparent resin layer formed on the blue LED; And
And a molding resin layer formed on the transparent resin layer to remove blue light emitted from the blue LED and emit yellow light,
Wherein the molding resin layer comprises 60 wt% to 83 wt% of a molding resin and 17 wt% to 40 wt% of a yellow phosphor.
According to a third aspect of the present invention,
Blue LED;
A spacing space formed on the blue LED; And
A molding resin layer formed on the spacing space to remove blue light emitted from the blue LED and emit yellow light,
Wherein the molding resin layer comprises 60 wt% to 83 wt% of a molding resin and 17 wt% to 40 wt% of a yellow phosphor.
According to a fourth aspect of the present invention,
The yellow light emitting device,
A yellow light device emitting yellow light in a wavelength band of 520 nm to 620 nm is provided.
According to a fifth aspect of the present invention,
The yellow light emitting device,
A pest removal device for emitting yellow light in a wavelength band of 520 nm to 620 nm to prevent access to pests is provided.
According to an exemplary embodiment of the present invention, the molding resin layer is formed by coating a molding resin composition including a liquid molding resin and a yellow phosphor, and the molding resin composition further comprises a sedimentation inhibitor for preventing sedimentation of the yellow phosphor .
According to another exemplary embodiment of the present invention, the molding resin layer is formed by coating a molding resin composition including a liquid molding resin and a yellow phosphor, and the molding resin has a viscosity of 1.5 Pa · s to 15 Pa · s And the yellow phosphor has a specific gravity of 3 to 6.
The present invention provides an improved yellow light emitting device, a lighting device including the same, and a pest control device. According to the present invention, a blue LED is used as an excitation light source, and the blue light emitted from the blue LED is removed, for example, the safety of the eyes and the bodily rhythm are not deteriorated, and the excellent luminance and luminous efficiency .
Further, according to the present invention, blue light of a short wavelength preferred by insect pests is removed, and yellow light of a long wavelength band, which pests do not like, is emitted to effectively exterminate pests. In addition, the moldability and adhesiveness of the phosphor are improved, durability and weather resistance are improved, and excellent reliability is obtained.
1 is a cross-sectional view of a yellow light emitting device according to a first embodiment of the present invention.
2 is a cross-sectional view of a yellow light emitting device according to a second embodiment of the present invention.
3 is a cross-sectional view of a yellow light emitting device according to a third embodiment of the present invention.
4 is a cross-sectional view of a yellow light emitting device according to a fourth embodiment of the present invention.
5 is a plan view of FIG.
6 is an exploded perspective view of a lighting apparatus according to the first embodiment of the present invention.
7 is an assembled perspective view of FIG.
8 is an exploded perspective view of a lighting apparatus according to a second embodiment of the present invention.
9 is a graph showing a color coordinate (x, y) of a yellow light emitting device according to an embodiment of the present invention.
10 is a graph showing the results of measuring the light efficiency (lm / W) of the yellow light emitting device according to the embodiment of the present invention.
11 to 13 are graphs showing spectral distributions of a yellow light emitting device according to an embodiment of the present invention.
As used herein, the term "and / or" is used to include at least one of the preceding and following elements. The term "one or more" as used in the present invention means one or more than two.
The terms "first", "second", "one side" and "other side" as used in the present invention are used to distinguish one component from another component, But is not limited to.
The terms "forming on top", "forming on top", "forming on bottom", "on top", "mounting on top" and " Does not mean that the constituent elements are directly laminated (installed), but includes the meaning that other constituent elements are formed (installed) between the constituent elements. For example, "formed on" and "mounted on" means not only that the second component is formed directly in contact with the first component, And includes a meaning that a third component can be further formed (installed) between the elements.
The terms "forming", "connecting", "mounting", "bonding", and "fastening" used in the present invention mean that two members are detachably coupled . Specifically, the terms 'connection', 'installation', 'coupling', and 'engagement' used in the present invention include, for example, a force fitting method (force fitting method); A fitting method using a groove and a projection; And a fastening method using a fastening member such as a screw, a bolt, a piece, or a rivet, the two members are combined so as to be able to be combined and separated, and the two members After combining, includes a meaning that is not separable. Also, in the case of the 'installation,' it also includes the meaning that two members are stacked (seated) without a separate coupling force.
The present invention provides an improved yellow light emitting device and a method of manufacturing the same. Further, the present invention provides a yellow light device and a pest control device including the yellow light emitting device of the present invention.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings illustrate exemplary embodiments of the invention and are provided to aid in the understanding of the invention only. In describing the embodiments of the present invention, detailed description of known general functions and / or configurations will be omitted.
[Yellow light emitting device]
≪ First Embodiment >
1 is a cross-sectional view of a yellow
1, the yellow
In the present invention, the
The yellow
In addition, the yellow
The
According to the present invention, the
In the present invention, the term "removal" as used includes at least the meaning of reduction, which in some cases includes the meaning of minimization and / or complete elimination. Specifically, in the present invention, the term "blue light is removed" means that the blue light (intensity of the blue wavelength) emitted from the
In addition, in the present invention, the term "yellow" as used herein does not only mean complete yellow color, but may include greenish-yellow and / or reddish-yellow depending on yellow. In the present invention, yellow may mean a wavelength band of 520 nm to 620 nm. Specifically, the yellow
According to the present invention, the blue light emitted from the
The yellow
The above effect is realized by a specific weight ratio of the molding resin and the yellow phosphor constituting the
In the present invention, the
The molding resin is, for example, liquid, and it may be light-transmissive and adhesive. The molding resin may be selected from a silicone resin, an epoxy resin, a urethane resin, an olefin resin, a copolymer thereof, and the like, but is not limited thereto.
In one example, the molding resin may be selected from a two-part silicone resin comprising a silicone resin as a subject and a silicone resin as a curing agent. The silicone resin is included here if it has at least one silicon (Si) element in the molecule, and it also includes a modified silicone resin. The modified silicone resin may be selected from, for example, an epoxy-modified silicone resin, an acrylic-modified silicone resin, an amine-modified silicone resin and / or a urethane-modified silicone resin. The silicone resin may preferably be selected from silicone resins having at least one group selected from an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a phenyl group and a trity group.
Further, the yellow phosphor may be selected from a phosphor excited by the
The
In the present invention, the
According to a preferred embodiment of the present invention, the yellow
According to the first embodiment of the present invention, the
The anti-settling agent may be selected, for example, from a viscosity enhancer. The viscosity enhancer may be selected from inorganic substances and / or organic substances, and may preferably be selected from inorganic substances such as silica (SiO 2 ). The silica (SiO 2 ) effectively prevents the settling of the yellow phosphor without hindering the optical characteristics of the
The inorganic substance (for example, SiO 2 ) as the anti-settling agent (viscosity increasing agent) may be included, for example, from 5% by weight to 25% by weight. Specifically, the inorganic material (for example, SiO 2) is the total weight of the
The inorganic substance (for example, SiO 2 ) as the anti-settling agent has an average particle size of, for example, 0.2 μm to 150 μm, which can be selected from those having the same particle size distribution as the yellow phosphor. With such an anti-settling agent, the yellow phosphor particles are prevented from sinking, and the blue light relative to the usage amount of the yellow phosphor can be effectively removed. Preferably, the yellow phosphor and the sedimentation inhibitor (e.g., SiO 2 ) each have an average particle size within a range of 5 탆 to 30 탆.
According to a second embodiment of the present invention, the molding resin is selected from a liquid molding resin, which is a sedimentation preventing means for preventing the yellow phosphor from sinking, and has a viscosity of 1.5 Pa · s to 15 Pa · s It is good. The yellow phosphor may have a specific gravity [g / cm < 3 >] of 3 to 6 although it may vary depending on the type and the particle size thereof. The yellow phosphor preferably has a specific gravity of 3 to 6, preferably having an average particle size in the range of 5 to 30 占 퐉.
According to the present invention, it has been found that when the viscosity of the molding resin and the specific gravity of the yellow phosphor are adjusted within the above ranges, the settling of the yellow phosphor is effectively prevented. That is, the viscosity of the molding resin and the specific gravity of the yellow phosphor prevent the yellow phosphor particles from sinking in the process of curing after coating the molding resin composition, thereby effectively removing the blue light, there was. This can be confirmed by the following examples.
When the viscosity of the molding resin is less than 1.5 Pa.s, sedimentation may occur depending on the type of the yellow phosphor. When the viscosity of the molding resin exceeds 15 Pa.s, for example, it is difficult for the yellow phosphor to be uniformly dispersed in the molding resin composition. Taking this into consideration, the viscosity of the molding resin is preferably 2 Pa.s to 12 Pa.s. In the present invention, the viscosity is a value measured at room temperature, which may be a value measured at a temperature of, for example, 10 ° C to 35 ° C, more specifically, for example, 20 ° C to 25 ° C.
When the specific gravity [g / cm < 3 >] of the yellow phosphor is 3 to 6, sedimentation can be prevented while uniformly mixing with the molding resin having the viscosity in the above range. When the specific gravity of the yellow phosphor is less than 3, it may be difficult to initially mix the yellow phosphor at the molding resin viscosity in the above range. That is, when the specific gravity of the yellow phosphor is low, uniform mixing and dispersion of the yellow phosphor may be difficult in mixing and molding the molding resin composition. At this time, after coating the molding resin composition, for example, most of the yellow phosphor may be distributed in the upper layer of the molding resin composition.
Further, in the present invention, the upper limit of the specific gravity of the yellow phosphor has a beneficial effect when the molding resin is thermosetting. Specifically, heat can be applied for curing the molding resin composition, wherein the viscosity of the molding resin may be lower than the initial viscosity by the applied heat. When the viscosity of the molding resin is lowered by heat and the specific gravity of the yellow phosphor is more than 6, sedimentation of the yellow phosphor may occur during the thermal curing of the molding resin composition. However, when the specific gravity of the yellow phosphor is 6 or less, sedimentation of the yellow phosphor is effectively prevented even when the viscosity of the molding resin is lowered by heat.
Therefore, according to a preferred embodiment of the present invention, the molding resin has a viscosity of 1.5 Pa.s to 15 Pa.s, and the yellow phosphor has a specific gravity of 3 to 6 and an average particle size of 5 to 30 占 퐉 The uniform mixing and sedimentation of the yellow phosphor is effectively prevented to improve the removal efficiency of blue light and also to have characteristics such as luminance and / or light efficiency. For example, blue light can be removed (minimized) by 95% or more, and preferably blue light can be 100% removed (completely removed). Also, it has an excellent optical efficiency of 150 lm / W or more, preferably 155 lm / W or more.
Hereinafter, the second to fifth embodiments of the yellow
≪ Second Embodiment >
2 illustrates a cross-sectional view of a yellow
2, the yellow
The transparent resin constituting the transparent resin layer (32) may be selected from the same resin as the molding resin of the molding resin layer (20). This
≪ Third Embodiment >
3 illustrates a cross-sectional view of a yellow
3, the yellow
The
≪ Fourth Embodiment &
4 and 5 illustrate a yellow
4 and 5, a yellow
The
≪
In the present invention, the molding resin may include a butadiene-styrene-alkyl methacrylate copolymer according to an exemplary embodiment. According to a specific embodiment, the molding resin may comprise a first resin as a main-resin and a second resin as a sub-resin. At this time, the first resin is used for molding at least, and it can be selected from a molding resin commonly used in the art.
The first resin may be at least one selected from, for example, a silicone resin, an epoxy resin, a urethane resin, an olefin resin and a copolymer thereof, as described above. The second resin is used at least for adhesion, which may be selected from butadiene-styrene-alkyl methacrylate copolymers.
The butadiene-styrene-alkyl methacrylate copolymer (second resin) is a ternary copolymer of butadiene, styrene, and alkyl methacrylate, which may be, for example, 30 to 45% by weight of butadiene monomer, 10% by weight and an alkyl methacrylate monomer in an amount of 40 to 60% by weight. At this time, the alkyl methacrylate monomer may be selected from, for example, methyl methacrylate, ethyl methacrylate and / or n-butyl methacrylate. Specific examples of the butadiene-styrene-alkyl methacrylate copolymer (second resin) include butadiene-styrene-methyl methacrylate copolymer, butadiene-styrene-ethyl methacrylate copolymer and / or butadiene- Butyl methacrylate copolymer, and the like.
According to the present invention, the butadiene-styrene-alkyl methacrylate copolymer (second resin) functions as a molding together with a first resin (e.g., silicone resin), which improves adhesiveness in particular. Specifically, the butadiene-styrene-alkyl methacrylate copolymer (second resin) effectively improves the aggregation force between the yellow phosphor particles compared with, for example, a silicone resin conventionally used as a molding resin in the related art, The interfacial adhesion between the
According to one embodiment, the molding resin may comprise a silicone resin (first resin) and a butadiene-styrene-alkyl methacrylate copolymer (second resin). The molding resin may contain the butadiene-styrene-alkyl methacrylate copolymer (second resin) in an amount of 2 to 20 parts by weight based on 100 parts by weight of the first resin (silicone resin or the like).
At this time, when the amount of the butadiene-styrene-alkyl methacrylate copolymer (second resin) is less than 2 parts by weight, the improvement effect (adhesive strength, etc.) of the butadiene-styrene-alkyl methacrylate copolymer may be insignificant have. When the amount of the butadiene-styrene-alkyl methacrylate copolymer (second binder) is more than 20 parts by weight, the synergistic effect with excess use may be insignificant, and the content of the first resin (silicone resin, etc.) The moldability may be lowered, and the cost may be undesirable.
In addition, the butadiene-styrene-alkyl methacrylate copolymer (second resin) may be selected from nano-particles having an average particle size of 50 nm to 500 nm. When the butadiene-styrene-alkyl methacrylate copolymer (the second resin) has a nano-size, the yellow phosphor particles are uniformly dispersed among the particles, and the adhesive force and the like can be more effectively improved.
In one example, the butadiene-styrene-alkyl methacrylate copolymer (the second resin) may be added and dispersed in the solution containing the first resin (such as silicone resin) with the yellow phosphor particles, (Fusion), and then the aggregation force (adhesion) between the yellow phosphor particles can be improved by curing.
The above-described yellow light emitting
[Lighting Device]
The
≪ First Embodiment >
6 and 7 show a
6 and 7, the
The
The
The closing
The
≪ Second Embodiment >
8 shows a
8, the
In the
The
The
[Pest control device]
The pest control device according to the present invention includes at least one yellow
The pest control device according to the present invention includes the yellow
In addition, the insect repelling device according to the present invention removes blue light of short wavelengths preferred by insects, and emits a long wavelength of a wavelength band of 520 nm to 620 nm, which the insects do not like, effectively preventing (eliminating) insect access. Pests in the present invention include, for example, insects, which include, for example, mosquitoes, moths, moths, and / or midge. Conventionally, most insect repellent apparatuses induce insect pests through blue light, and then apply high pressure to kill insects. However, it threatens the ecosystem in that it kills insects (feedstuffs) that feed on birds and amphibians. However, the insect repelling device according to the present invention does not kill insects, but sends insects (insects) through long- (Prevention of access).
Hereinafter, examples and comparative examples of the present invention will be exemplified. The following examples and comparative examples are illustrative of some of the various experimental examples for the practice of the present invention and are provided merely to illustrate the present invention. Is not limited. In addition, the following comparative example is not meant to be a prior art, and is provided for comparison with an embodiment only.
[Examples 1 to 13] and [Comparative Examples 1 to 2]
<Molding Resin Composition>
As the molding resin composition, a silicone resin solution and a yellow phosphor were mixed and stirred. At this time, the contents of the silicone resin liquid and the yellow phosphor were varied according to each of the Examples and Comparative Examples. The contents of the silicone resin liquid and the yellow phosphor of the molding resin composition according to each of the Examples and Comparative Examples are shown in Table 1 below. In the following [Table 1], the content is% by weight based on 100 of the mixture of the silicone resin liquid and the yellow phosphor.
The silicone resin liquid was a two-pack type silicone resin composition containing a subject and a curing agent in a weight ratio of 1: 1, and a liquid curing type liquid having a viscosity of about 1.2 Pa.s at room temperature (23 캜) was used. The yellow phosphor is (YGdGa) 3 (Al) 5 O 12: was used as the YAG-base phosphor having the composition formula of the Ce + 2, which has an average particle size of between about 14㎛, specific gravity (specific gravity) of about 4.41.
<Device Manufacturing>
An LED package on which 12 blue LED chips having an emission peak of about 457 nm were mounted on a printed circuit board (PCB) was prepared, and the molding resin composition was coated on top of the blue LED chip. Thereafter, the sample was cured at about 160 캜 for 3 hours to prepare a light emitting device specimen including the structure as shown in Fig.
(weight%)
(weight%)
The color coordinates (x, y) and the light efficiency (lm / W) of the light emitting device specimens according to each of the above Examples and Comparative Examples were measured, and the results are shown in Table 2 below. The intensity of a wavelength of 457 nm and the intensity ratio of 457 nm were measured for each light emitting device specimen, and the results are shown in Table 3 below. In this case, the intensity ratio of 457 nm is expressed as a percentage (%) with respect to Comparative Example 1 as a reference (Ref .: 100), which means a removal rate of 457 nm wavelength. Each optical characteristic was measured at a current of 65 mA in accordance with Japanese Industrial Standard (JIS Z 8726-1990), and OL-770 spectrometer was used as a measuring device.
In addition, the results of the above measurements are shown graphically in FIGS. 9 to 11 attached hereto. FIG. 9 shows the measurement results of the color coordinates (x, y), and FIG. 10 shows the measurement results of the light efficiency (lm / W). And FIG. 11 is a graph showing spectral distribution results as light intensity according to wavelengths. At this time, in the spectrum graph of FIG. 11, the results of Examples 11 to 13 are almost the same as those of Example 10, and are not shown.
As shown in [Table 1] to [Table 3] and Figures 9 to 11 attached hereto, as the content of the yellow phosphor increases, the color coordinates (x, y) are shifted and the 457 nm wavelength emitted from the blue LED chip is absorbed , And the intensity of 457 nm is decreased. Further, it can be seen that the light efficiency (lm / W) is increased or decreased depending on the content of the yellow phosphor. That is, as the content of the yellow phosphor increases, it increases sharply up to Example 4 (22.8 wt%), but decreases sharply from Example 5 (24.6 wt%). At this time, an increase in the light efficiency (lm / W) means an increase in the luminance lm.
Therefore, the removal efficiency, light efficiency (lm / W) and luminance (lm) of blue light (457 nm) vary depending on the content of the yellow phosphor. Specifically, when the content of the yellow phosphor is 17% by weight or more, it is understood that the removal efficiency of blue light is 50% or more (removal ratio based on Comparative Example 1) and the light efficiency (lm / W) is 145 lm / W or more have. In addition, when the content of the yellow phosphor is too large, the improvement of the blue light removal is small and the light efficiency (lm / W) tends to decrease.
From the above results, it can be seen that the removal efficiency of blue light is more than 50% and the light efficiency (lm / W) is more than 145 lm / W in the range of the content of the yellow phosphor in the range of 17 wt% to 40 wt%. Preferably, when the content of the yellow phosphor is 20 wt% to 35 wt%, the blue light removal rate is 20% or more and the light efficiency (lm / W) is 150 lm / W or more. In particular, when the content of the yellow phosphor is in the range of about 28 wt% to 32 wt% (Examples 7 to 9), the removal efficiency of blue light (about 98% or more removed), the light efficiency (lm / W) (Lm / W) and luminance (lm) higher than that of the comparative example 2 (the phosphor content of about 15% by weight), which is the most commonly applied.
[Example 14]
SiO 2 was further added to the molding resin composition as an anti-settling agent. Specifically, the same procedure as in Example 1 was carried out except that a molding resin composition obtained by mixing a silicone resin solution, a yellow phosphor and SiO 2 (anti-settling agent) was used as the molding resin composition.
At this time, the SiO 2 having an average particle size of about 16 μm was used, and 2% by weight based on the total weight of the molding resin composition was used. That is, in Example 14, as the molding resin composition, a silicone resin liquid having a viscosity of about 1.2 Pa.s (at 23 占 폚) of 80.5% by weight, a specific gravity of about 4.41 and an average particle size of about 14 占 퐉, %, And 2% by weight of SiO 2 having an average particle size of about 16 탆.
[Example 15]
The same procedure as in Example 14 was carried out except that the content of SiO 2 was varied. That is, in Example 15, as the molding resin composition, a silicone resin solution having a viscosity of about 1.2 Pa.s (at 23 占 폚) of 74.5% by weight, a specific gravity of about 4.41, and an average particle size of about 14 占 퐉, %, And 8% by weight of SiO 2 having an average particle size of about 16 탆.
FIG. 12 shows spectral distribution results of the light emitting device specimens according to Examples 14 and 15. FIG. 12 shows spectrum distributions of the light emitting device specimen according to Example 1 for comparison. As shown in FIG. 12, it can be seen that the precipitation of the yellow phosphor is prevented by the addition of SiO 2 , and the removal rate of blue light is improved.
In addition, it can be seen that Example 15 in which the content of SiO 2 is 8% by weight is superior to Example 14 (2% by weight) in the removal rate of blue light.
[Examples 16 and 17]
Except that a silicone resin liquid having a viscosity different from that of the phosphor having a different specific gravity was used in the same manner as in Example 8 (
Remarks
FIG. 13 shows spectral distribution results of the light emitting device specimens according to Examples 16 and 17. FIG. 13 shows the spectral distributions of the light emitting device specimen according to Example 8 for comparison.
As shown in Fig. 13, the removal rate of blue light is remarkably improved by the viscosity of the silicone resin liquid and the specific gravity of the yellow phosphor. That is, the blue light (457 nm) is effectively absorbed and removed in Examples 16 and 17 compared with Example 8, and the emission peak of blue light (457 nm) is hardly visible.
In addition, as shown in Fig. 13, the results of Examples 16 and 17 show improved results in intensity (intensity) of the yellow wavelength (about 550 nm to 570 nm) as compared with Example 8.
In addition, it can be seen that the case where the viscosity and the specific gravity are both appropriately adjusted (Example 17) is higher than the case where the viscosity is low (Example 8) and the case where the specific gravity is low (Example 16) That is, in the case of Example 17, it can be seen that the emission peak of the blue light (457 nm) is almost zero, and the blue light is completely removed (almost 100% removal rate).
10: blue LED 20: molding resin layer
32: transparent resin layer 34: spacing space
35: transparent member 100: yellow light emitting device
120: LED package 140: housing
160: outer cover 180: closing member
190: power supply element 200: lighting device
Claims (12)
And a molding resin layer formed on the blue LED to remove blue light emitted from the blue LED and emit yellow light,
Wherein the molding resin layer comprises 60 wt% to 83 wt% of a molding resin and 17 wt% to 40 wt% of a yellow phosphor.
A transparent resin layer formed on the blue LED; And
And a molding resin layer formed on the transparent resin layer to remove blue light emitted from the blue LED and emit yellow light,
Wherein the molding resin layer comprises 60 wt% to 83 wt% of a molding resin and 17 wt% to 40 wt% of a yellow phosphor.
A spacing space formed on the blue LED; And
A molding resin layer formed on the spacing space to remove blue light emitted from the blue LED and emit yellow light,
Wherein the molding resin layer comprises 60 wt% to 83 wt% of a molding resin and 17 wt% to 40 wt% of a yellow phosphor.
Wherein the molding resin layer is formed by coating a molding resin composition including a liquid molding resin and a yellow phosphor, and the molding resin composition further comprises an anti-settling agent for preventing the settling of the yellow fluorescent material.
Wherein the molding resin layer comprises 60 to 75% by weight of a molding resin, 20 to 35% by weight of a yellow phosphor and 5 to 20% by weight of an anti-settling agent,
The yellow phosphor has an average particle size of 5 mu m to 30 mu m,
The suspending agent is a yellow light-emitting device, characterized in that silica (SiO 2) having a mean particle size of 5㎛ to 30㎛.
Wherein the molding resin layer is formed by coating a molding resin composition including a liquid molding resin and a yellow phosphor,
The molding resin has a viscosity of 1.5 Pa · s to 15 Pa · s,
Wherein the yellow phosphor has a specific gravity of 3 to 6.
Wherein the molding resin layer is formed by coating a molding resin composition containing 65 wt% to 80 wt% of a liquid molding resin and 20 wt% to 35 wt% of a yellow phosphor,
The molding resin is a thermosetting silicone resin having a viscosity of 2 Pa · s to 12 Pa · s,
Wherein the yellow phosphor has a specific gravity of 3 to 6 and an average particle size of 5 to 30 占 퐉.
The yellow light emitting device has a light efficiency of 145 lm / W to 160 lm / W,
And has an emission peak in a wavelength band of 540 nm to 590 nm.
Wherein the molding resin comprises:
A first resin for molding,
And a second resin for adhesion,
Wherein the second resin is a butadiene-styrene-alkyl methacrylate copolymer.
Wherein the molding resin comprises a butadiene-styrene-alkyl methacrylate copolymer in an amount of 2 to 20 parts by weight based on 100 parts by weight of the first resin.
And emits yellow light having a wavelength band of 520 nm to 620 nm.
And yellow light having a wavelength band of 520 nm to 620 nm is emitted to prevent access to pests.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020150111393A KR20170017457A (en) | 2015-08-07 | 2015-08-07 | Yellow light emitting device, illuminating apparatus comprising the same and apparatus for eliminating harmful insect comprising the same |
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| KR1020170069614A Division KR101797981B1 (en) | 2017-06-05 | 2017-06-05 | Yellow light emitting device, illuminating apparatus comprising the same and apparatus for eliminating harmful insect comprising the same |
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| CN112042615A (en) * | 2020-09-11 | 2020-12-08 | 杭州汉徽光电科技有限公司 | Pest prevention and control solid-state photoelectric device, prevention and control device and application |
| CN112042614A (en) * | 2020-09-11 | 2020-12-08 | 杭州汉徽光电科技有限公司 | Method for pest control by violet light and converted light thereof |
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| KR20130041647A (en) | 2011-10-17 | 2013-04-25 | 한국과학기술원 | Oxide green phosphor and the method for preparing the same and white led using the same |
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