CN103227268A - LED fluorescent powder coating technology - Google Patents
LED fluorescent powder coating technology Download PDFInfo
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- CN103227268A CN103227268A CN2013101077684A CN201310107768A CN103227268A CN 103227268 A CN103227268 A CN 103227268A CN 2013101077684 A CN2013101077684 A CN 2013101077684A CN 201310107768 A CN201310107768 A CN 201310107768A CN 103227268 A CN103227268 A CN 103227268A
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Abstract
The invention discloses an LED fluorescent powder coating technology. An aluminum alloy surface is taken as a diffuse reflection surface of an LED light source; aluminum alloy is subjected to surface treatment; the surface treatment comprises aluminum alloy anodic oxidation treatment, nano fluorescent powder surface finish treatment, nano fluorescent powder filling treatment and hole sealing treatment; the aluminum alloy surface is taken as the diffuse reflection surface and partially converts blue light emitted by an LED into yellow light through the conversion function of nano fluorescent powder, and the yellow light and the blue light are mixed to form white light. The LED fluorescent powder coating technology has the technical benefits as follows: the fluorescent powder doesn't block radiating of the LED, simultaneously, work of the fluorescent powder at higher temperature can be avoided, and the LED coating technology is a preferable technical scheme of a superhigh power LED light source.
Description
Technical field
The invention belongs to the LED lighting technical field, be specifically related to a kind of LED fluorescent material application techniques.
Background technology
At present, LED fluorescent material at first mixes with glue usually, drips glue then and is coated on the LED surface, with the blue-ray LED is example, and after blue light light emitted from LED, part blue light light and fluorescent material effect were converted into gold-tinted, gold-tinted and blue light, what emit like this has just become white light.Because glue is the non-conductor of heat often, blue light is absorbed the rear section by fluorescent material and is converted to heat energy, and it is aging to occur glue like this, the back luminous efficiency of being heated fluorescent material reduces, the problem of aspects such as colour temperature drift, the temperature of LED also can raise simultaneously, shortens the useful life of LED.In addition, directly the light that emits from LED is very dazzling, often needs diffuse-reflective material to make light become soft, and in the diffuse reflection process, diffuse-reflective material can the absorbent portion beam split, causes LED brightness step-down, also can raise the cost in LED lamp source simultaneously.
Therefore propose a kind of new LED fluorescent material coating process, can overcome the defective of existing encapsulation technology.
Summary of the invention
Shortcoming at existing LED fluorescent material encapsulation, the important component part of putting in order in the LED fluorescent material application techniques scheme that the present invention proposes as the inventor, a kind of LED fluorescent material application techniques is provided, is applied to the LED illumination, overcome the shortcoming of existing LED fluorescent material encapsulation.
The present invention realizes like this, a kind of LED fluorescent material application techniques, aluminum alloy surface is used as the reflecting surface of led light source, aluminium alloy is through surface treatment, surface treatment comprises the aluminium alloy anode oxide processing, the nano-phosphor finishing is handled, and nano-phosphor can processing and sealing of hole are handled, and each step is described below:
Aluminium alloy anode oxide is handled and is divided into following steps, the first step, the aluminum alloy surface polishing, second step, the aluminum alloy surface roughened, the 3rd step, the aluminum alloy surface anodic oxidation, the 4th step, the aluminum alloy surface activation processing, the polishing of described first step aluminum alloy surface is as anode with aluminium alloy, put into the mixed solution of perchloric acid and ethanol, the scope of anode voltage is from 0 volt to 15 volts, and the temperature of the mixed solution of perchloric acid and ethanol maintains below 10 degrees centigrade by refrigerating system, and the time of aluminum alloy surface polishing is in 60 seconds; The described second step aluminum alloy surface roughened is aluminium alloy to be put into the mixed liquor of NaOH, water and ethanol, and the temperature of this mixed solution maintains below 20 degrees centigrade by refrigerating system; Described the 3rd step aluminum alloy surface anodic oxidation is as anode with aluminium alloy, put into the mixed solution of phosphoric acid, water and ethanol, anode voltage is 120 volts to 250 volts, and the temperature of the mixed solution of phosphoric acid, water and ethanol maintains below 10 degrees centigrade by refrigerating system; Described the 4th step aluminum alloy surface activation processing is that aluminium alloy is immersed in the coupling agent, and the temperature maintenance of coupling agent is between 80 degrees centigrade to 120 degrees centigrade.
It is that nano-phosphor and coupling agent are mixed that the nano-phosphor finishing is handled, the mass ratio of nano-phosphor and coupling agent is 100 to 5 to 100 to 1, the temperature of coupling agent is between 80 degrees centigrade to 120 degrees centigrade in the mixed process, the time of mixing is 1 hour to 24 hours, handles for 30 seconds under hyperacoustic environment to 300 seconds having.
It is that the nano-phosphor that obtains after will the nano-phosphor finishing handling and above-mentioned aluminum alloy surface are handled the aluminium alloy that obtains and mixed that the nano-phosphor can is handled, the frequency of under the environment of every cubic metre 30 watts to 200 watts ultrasonic powers, carrying out ultrasonic Treatment be 60kHz to 80kHz, the processing time is 300 seconds to 1000 seconds.
It is the aluminium alloy after the nano-phosphor can processing to be carried out sealing of hole handle that sealing of hole is handled, the parameter that sealing of hole is handled is, temperature is 80 degrees centigrade to 100 degrees centigrade, and air pressure is that 1 atmosphere is pressed onto 5 atmospheric pressure, the volumetric concentration of steam is 30% to 50%, and the processing time is 30 minutes to 60 minutes.
Better, the transformation that the blue light that described aluminum alloy surface is launched LED as diffuse surface passes through described nano-phosphor partly is converted to gold-tinted, and gold-tinted and blue light become white light.
Know-why of the present invention: make aluminum alloy surface mirror effect occur by polishing, help the reflection of light, immersion by sodium hydroxide solution, make aluminum alloy surface coarse surface in the micro-meter scale scope, occur, form diffuse surface, to 350 nanometers, the degree of depth of hole is in 300 nanometers to 3 micron in 200 nanometers for the hole diameter that shows generation at aluminium alloy by anodizing technology, after the aluminum alloy surface activation processing, the nano aperture inwall will adhere to coupling agent; The effect that the nano-phosphor finishing is handled is to make nano fluorescent pruinescence coupling agent wrap up; In the nano-phosphor pouring process, nano-phosphor enters in the nano aperture of aluminum alloy surface, and under the help of coupling agent, nano-phosphor is attracted in the nano aperture of aluminum alloy surface; Handle by sealing of hole, make the hole sealing of pellumina of aluminum alloy surface and then sealing nano-phosphor.Handle later aluminum alloy surface like this and the blue light of LED emission partly is converted to gold-tinted through the transformation of nano-phosphor, become white light through aluminum alloy surface reflection back gold-tinted and blue light as reflecting surface.
Creativeness of the present invention is:
A, fluorescent material are away from the LED light emitting source, and the temperature of fluorescent material work is near room temperature, and the job stability of fluorescent material improves, and the life-span increases;
B, LED light-emitting area do not have stopping of fluorescent material, and the heat dispersion of LED improves;
C, fluorescent material composition can be different at the different parts of aluminum alloy surface, can realize that so same led light source produces the light of multiple color.
D, aluminum alloy surface is handled and the application of fluorescent material combines, aluminium alloy can provide good heat radiation for fluorescent material, can provide better design for the ultra high power led light source.
E, aluminum alloy surface be through roughened, and emission light becomes and diffuses, and has avoided dazzling situation, has controlled the cost of LED lamp simultaneously.
Technique effect of the present invention is: fluorescent material no longer is the obstruction of LED heat radiation, fluorescent material can not worked under higher temperature yet simultaneously, be a kind of optimized technical scheme of ultra high power led light source, aluminum alloy surface can realize diffuse reflection, has avoided dazzling situation.
Description of drawings
Fig. 1 is the schematic cross-section of the aluminum alloy surface after the aluminum alloy surface anodized of the embodiment of the invention.
Fig. 2 is the schematic cross-section of the aluminum alloy surface after the aluminum alloy surface activation processing of the embodiment of the invention.
Fig. 3 is the schematic cross-section of the aluminum alloy surface after the nano-phosphor can of the embodiment of the invention is handled.
Fig. 4 is the schematic cross-section of the aluminum alloy surface after the sealing of hole of the embodiment of the invention is handled.
Fig. 5 is the schematic diagram of the aluminum alloy surface reflection led light source of the embodiment of the invention.
Description of reference numerals: 1, aluminium alloy; 10, aluminum alloy surface; 11, porous anodic aluminium oxide; 21, the coupling agent on porous anodic aluminium oxide surface; 50, nano-phosphor; 51, the coupling agent on nano-phosphor surface; 31, the blue light of LED emission; 32, mixed light; 41, LED; 42, led support.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Below in conjunction with above-mentioned drawings and Examples, the present invention is described in further detail.
The invention process for example Fig. 1 is extremely shown in Figure 5: the present invention realizes like this, a kind of LED fluorescent material application techniques, aluminum alloy surface is used as the reflecting surface of led light source, aluminium alloy is through surface treatment, surface treatment comprises the aluminium alloy anode oxide processing, the nano-phosphor finishing is handled, and nano-phosphor can processing and sealing of hole are handled, and each step is described below.
Aluminium alloy anode oxide is handled and is divided into following steps, the first step, the aluminum alloy surface polishing, second step, the aluminum alloy surface roughened, the 3rd step, the aluminum alloy surface anodic oxidation, the 4th step, the aluminum alloy surface activation processing, the polishing of first step aluminum alloy surface is as anode with aluminium alloy, put into the mixed solution of perchloric acid and ethanol, the scope of anode voltage is from 0 volt to 15 volts, and the temperature of the mixed solution of perchloric acid and ethanol maintains 4 degrees centigrade by refrigerating system, and the time of aluminum alloy surface polishing is 30 seconds; The second step aluminum alloy surface roughened is aluminium alloy to be put into the mixed liquor of NaOH, water and ethanol, the temperature of this mixed solution maintains 15 degrees centigrade by refrigerating system, wherein sodium hydroxide concentration is 15% in the mixed liquor of NaOH, water and ethanol, and the mass concentration of ethanol is 30%; The aluminum alloy surface anodic oxidation of the 3rd step is as anode with aluminium alloy, put into the mixed solution of phosphoric acid, water and ethanol, anode voltage is 200 volts, the mass concentration of phosphoric acid is 1%, and the mass concentration of ethanol is 50%, and the temperature of the mixed solution of phosphoric acid, water and ethanol maintains 4 degrees centigrade by refrigerating system, anodizing time is 30 minutes, as shown in Figure 1, the hole diameter of the porous anodic aluminium oxide 11 of the aluminum alloy surface 10 that obtains is about 350 nanometers, and the degree of depth is 2 microns; The 4th step aluminum alloy surface activation processing is that aluminium alloy is immersed in the coupling agent, the temperature maintenance of coupling agent is at 90 degrees centigrade, coupling agent is a monoalkoxytitanates, and as shown in Figure 2, the coupling agent 21 on porous anodic aluminium oxide surface is attached to porous anodic aluminium oxide 11 surfaces.
It is that nano-phosphor and coupling agent are mixed that the nano-phosphor finishing is handled, the mass ratio of nano-phosphor and coupling agent is 100 to 2, the temperature of coupling agent is 90 degrees centigrade in the mixed process, the time of mixing is 3 hours, handled for 100 seconds having under hyperacoustic environment, coupling agent is a monoalkoxytitanates.
It is that the nano-phosphor that obtains after will above-mentioned nano-phosphor finishing handling and aluminum alloy surface are handled the aluminium alloy that obtains and mixed that the nano-phosphor can is handled, the frequency of carrying out ultrasonic Treatment under the environment of 100 watts every cubic metre ultrasonic powers is 70kHz, processing time is 500 seconds, as shown in Figure 3, the surface of nano-phosphor 50 is by coupling agent 51 parcels on nano-phosphor surface, by the coupled action of coupling agent, nano-phosphor 50 is adsorbed in the inside, cavity of porous anodic aluminium oxide 11.
It is the aluminium alloy after the above-mentioned nano-phosphor can processing to be carried out sealing of hole handle that sealing of hole is handled, the parameter that sealing of hole is handled is, ambient temperature is 90 degrees centigrade, air pressure is 3 atmospheric pressure, the volumetric concentration of steam is 40%, and the processing time is 40 minutes, as shown in Figure 4, porous anodic aluminium oxide 11 is under water and effect, and the oxidized aluminium of the hole of porous anodic aluminium oxide 11 seals.
As shown in Figure 4, LED41 is fixed on led support 42, the light-emitting area of LED41 is towards aluminium alloy 1, and the transformation that the blue light 31 that launch LED41 as diffuse surface on the surface of aluminium alloy 1 passes through nano-phosphors partly is converted to gold-tinted, and the mixed light 32 of gold-tinted and blue light is a white light.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, for example, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. LED fluorescent material application techniques, aluminum alloy surface is used as the reflecting surface of led light source, it is characterized in that: described aluminium alloy is through surface treatment, surface treatment comprises the aluminium alloy anode oxide processing, the nano-phosphor finishing is handled, nano-phosphor can processing and sealing of hole are handled, and each step is described below:
Described aluminium alloy anode oxide is handled and is divided into following steps, the first step, the aluminum alloy surface polishing, second step, the aluminum alloy surface roughened, the 3rd step, the aluminum alloy surface anodic oxidation, the 4th step, the aluminum alloy surface activation processing, the polishing of described first step aluminum alloy surface is as anode with aluminium alloy, put into the mixed solution of perchloric acid and ethanol, the scope of anode voltage is from 0 volt to 15 volts, and the temperature of the mixed solution of perchloric acid and ethanol maintains below 10 degrees centigrade by refrigerating system, and the time of aluminum alloy surface polishing is in 60 seconds; The described second step aluminum alloy surface roughened is aluminium alloy to be put into the mixed liquor of NaOH, water and ethanol, and the temperature of this mixed solution maintains below 20 degrees centigrade by refrigerating system; Described the 3rd step aluminum alloy surface anodic oxidation is as anode with aluminium alloy, put into the mixed solution of phosphoric acid, water and ethanol, anode voltage is 120 volts to 250 volts, and the temperature of the mixed solution of phosphoric acid, water and ethanol maintains below 10 degrees centigrade by refrigerating system; Described the 4th step aluminum alloy surface activation processing is that aluminium alloy is immersed in the coupling agent, and the temperature maintenance of coupling agent is between 80 degrees centigrade to 120 degrees centigrade;
It is that nano-phosphor and coupling agent are mixed that described nano-phosphor finishing is handled, the mass ratio of nano-phosphor and coupling agent is 100 to 5 to 100 to 1, the temperature of coupling agent is between 80 degrees centigrade to 120 degrees centigrade in the mixed process, the time of mixing is 1 hour to 24 hours, handles for 30 seconds under hyperacoustic environment to 300 seconds having;
It is that the nano-phosphor that obtains after will the nano-phosphor finishing handling and above-mentioned aluminum alloy surface are handled the aluminium alloy that obtains and mixed that described nano-phosphor can is handled, the frequency of under the environment of every cubic metre 30 watts to 200 watts ultrasonic powers, carrying out ultrasonic Treatment be 60kHz to 80kHz, the processing time is 300 seconds to 1000 seconds;
It is the aluminium alloy after the nano-phosphor can processing to be carried out sealing of hole handle that described sealing of hole is handled, the parameter that sealing of hole is handled is, temperature is 80 degrees centigrade to 100 degrees centigrade, and air pressure is that 1 atmosphere is pressed onto 5 atmospheric pressure, the volumetric concentration of steam is 30% to 50%, and the processing time is 30 minutes to 60 minutes.
2. LED fluorescent material application techniques according to claim 1 is characterized in that: the transformation that the blue light that described aluminum alloy surface is launched LED as diffuse surface passes through described nano-phosphor partly is converted to gold-tinted, and gold-tinted and blue light become white light.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1960016A (en) * | 2005-11-02 | 2007-05-09 | 西铁城电子股份有限公司 | Light emitting diode |
| CN101813254A (en) * | 2009-02-23 | 2010-08-25 | 优志旺电机株式会社 | Light supply apparatus |
| JP2010285640A (en) * | 2009-06-10 | 2010-12-24 | Fujifilm Corp | Microstructure and light emitting device |
| CN202633384U (en) * | 2012-04-26 | 2012-12-26 | 刘晓博 | Reflective fluorescent surface for LED illumination |
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- 2013-03-31 CN CN201310107768.4A patent/CN103227268B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1960016A (en) * | 2005-11-02 | 2007-05-09 | 西铁城电子股份有限公司 | Light emitting diode |
| CN101813254A (en) * | 2009-02-23 | 2010-08-25 | 优志旺电机株式会社 | Light supply apparatus |
| JP2010285640A (en) * | 2009-06-10 | 2010-12-24 | Fujifilm Corp | Microstructure and light emitting device |
| CN202633384U (en) * | 2012-04-26 | 2012-12-26 | 刘晓博 | Reflective fluorescent surface for LED illumination |
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Address after: 16, Guangdong, Longhua, Shenzhen New District, people street, people Avenue, former A1607 building, room 518000 Applicant after: Shenzhen Sanchuangke Technology Co., Ltd. Address before: The streets of Baoan District Shenzhen city Guangdong province 518131 Mei Long Road and Bulong road at the junction of the Meilong town garden 9 Building 2 unit 16A (Office) Applicant before: Shenzhen Ziyuan Technology Co., Ltd. |
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