CN103398304B - Sealed LED lamp - Google Patents
Sealed LED lamp Download PDFInfo
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- CN103398304B CN103398304B CN201310321053.9A CN201310321053A CN103398304B CN 103398304 B CN103398304 B CN 103398304B CN 201310321053 A CN201310321053 A CN 201310321053A CN 103398304 B CN103398304 B CN 103398304B
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Abstract
The invention provides a sealed LED lamp comprising a lamp shell, a substrate, an LED lighting module disposed on the substrate, a lamp shade, and a radiator disposed below the substrate. Both the substrate and the radiator are provided with through holes allowing power cords to pass. The radiator is hermetically connected with the substrate through sealant. The sealant comprises, by weight, 100 parts of polyurethane, 12-15 parts of acrylate, 10-20 parts of oleate, 30-50 parts of dioctyl phthalate, and 1-5 parts of activated nano calcium carbonate. The sealant made from specially selected materials is good in mechanical property and adhesion, allows the radiator and the lamp shell to be hermetically adhered effectively, and prevents moisture, dust and the like from entering the LED lamp from a gap between the radiator and the shell to impair the lifetime of the LED lamp.
Description
Technical field:
The present invention relates to lighting technical field, particularly relate to a kind of LED of good seal performance.
Background technology:
LED has the advantage of energy-saving and environmental protection, becomes main trend in the development of light fixture industry.Present LED is applicable to traditional field more, has in the environment for use of requirement for water proof and dust proof, has now the LED of technology may not be very applicable, and the LED of such prior art uses service life shorter in moist or that dust is more environment.
Existing patent document, such as publication number is that the Chinese patent " sealed waterproof LED lamp " of CN201521934U discloses a kind of sealed waterproof LED lamp, it by offering closed hole on base, in closed hole, cushion block is set, cushion block is pressed in closed hole, make LED have good sealing effectiveness.
And for example publication number is the Chinese patent " a kind of hermetically-sealed construction of LED street lamp " of CN201866745U, it discloses a kind of hermetically-sealed construction of LED street lamp, by establishing cover plate in LED upper cover, packing sealing inside cover plate, drier is placed, to reach sealing and moistureproof effect in LED lamp cover.
For another example publication number is the Chinese patent " closed type Multifunctional LED aquatic animals lamp " of CN202708807U, it discloses a kind of closed type Multifunctional LED aquatic animals lamp, by arranging groove in U-shaped aluminum hull openend, light cover and groove gap-fill encapsulant and several LED ultraviolet lights are installed on LED circuit substrate, make LED good sealing effect and there is bactericidal effect.
Above-mentioned patent is all that the sealing property of mode to LED adopting structure to improve is improved, but belongs to the very little material of particle due to steam and dust, and the improvement of sealing structure is difficult to the intrusion stoping steam and dust completely.
Summary of the invention:
Technical problem to be solved by this invention is, for the above-mentioned deficiency of prior art, provides a kind of sealing effectiveness better, the LED of the high-seal using service life longer in moist or that dust is more environment.
The technical solution adopted in the present invention is: a kind of sealing LED lamp, comprise lamp housing, substrate, the LED light module be arranged on substrate, lampshade and the radiator under being arranged on substrate, described substrate and radiator are equipped with the through hole that power supply source line passes, described radiator is connected with body seal by fluid sealant, and component and the parts by weight proportioning of described fluid sealant are:
Polyurethane 100 parts;
Acrylate 12-15 part;
Oleate 10-20 part;
O-phthalic acid dibutyl ester 30-50 part;
Active nano-calcium carbonate 1-5 part.
The present invention, by choosing the polyurethane of proper content, acrylate, oleate, o-phthalic acid dibutyl ester and active nano-calcium carbonate, such that the surface drying time of fluid sealant is short, viscosity is high, hot strength is low thus makes the good seal performance of radiator and substrate.
Wherein, polyurethane is the main component of thermal paste of the present invention, provides carrier and as main stickum for giving other components.Acrylate is as the viscosity of tackifier for increasing fluid sealant, and acrylate also plays the effect of surfactant jointly with oleate.O-phthalic acid dibutyl ester mainly plays filler effect, and active nano-calcium carbonate effectively can strengthen reaction speed, Reaction time shorten, the increase efficiency of above-mentioned raw materials as promoter.
Further, the component of described fluid sealant and parts by weight proportioning are:
Polyurethane 100 parts;
Acrylate 13 parts;
Oleate 15-20 part;
O-phthalic acid dibutyl ester 30-40 part;
Active nano-calcium carbonate 1-3 part.
Further, between described lamp housing and lampshade, be provided with O RunddichtringO, and between described lampshade and lamp housing, be provided with the pressure ring for the compression by lampshade, O RunddichtringO, lamp housing.Be arranged so that the sealing property between lampshade and lamp housing is higher like this.
Further, also sealing rubber ring is provided with between described through hole and described power line.
Further, described fluid sealant is prepared in the following way:
S1: after matching well get raw material according to above-mentioned formula, is heated to 70-90 degree Celsius of reaction and vacuumizes after 10-30 minute after polyurethane, active nano-calcium carbonate being mixed with oleate;
S2: add acrylate stirring reaction and vacuumize after 5-10 minute;
S3: add o-phthalic acid dibutyl ester stirring reaction and dewater after 5-10 minute and vacuumize obtained finished product.
In preparation method of the present invention, in the heating reaction temperature of step S1 and whole preparation process, charging sequence is the important factor affecting end properties.
Rising can make that the surface drying time of fluid sealant shortens to reaction temperature gradually, but viscosity increases make mechanical properties decrease, needs the relation of both balances.
If find through overtesting after replacing charging sequence, can there is obvious downslide in mechanical property.Test of many times just finally confirms that the addition step of above-mentioned S1-S3 is to obtain good mechanical property and adhesive property.
Further, described fluid sealant is prepared in the following way:
S1: after matching well get raw material according to above-mentioned formula, is heated to 85 degrees Celsius of reactions and vacuumizes after 20 minutes after polyurethane, active nano-calcium carbonate being mixed with oleate;
S2: add acrylate stirring reaction and vacuumize after 5 minutes;
S3: add o-phthalic acid dibutyl ester stirring reaction and dewater after 10 minutes and vacuumize obtained finished product.
The present invention compared with prior art has the following advantages: substrate periphery and lamp housing are tightly connected, lampshade and lamp housing are tightly connected, sealing rubber ring is provided with between power line and through hole, LED light module so just can be well kept to be in a sealed environment, make whole LED well can adapt to humidity or the more environment of dust, make the service life of whole LED higher.The fluid sealant adopting special material to make has good mechanical property and adhesive property, make the sealing between radiator and lamp housing and bond effect good, steam and dust etc. can not enter LED by the gap between radiator and shell inner and affect the LED life-span.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of a kind of sealing LED lamp of the present invention;
Fig. 2 is the preparation flow schematic diagram of fluid sealant in LED of the present invention.
As shown in the figure: 1, lamp housing; 2, substrate; 3, LED light module; 4, lampshade; 5, radiator; 6, through hole; 7, O RunddichtringO; 8, pressure ring; 100, fluid sealant.
Detailed description of the invention:
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described further, but the present invention is not limited only to following detailed description of the invention.
As shown in Figure 1: a kind of high sealing LED, comprise lamp housing 1, substrate 2, setting LED light module 3, lampshade 4 and the radiator 5 under being arranged on substrate 2 on a substrate 2, described substrate 2 and radiator 5 are equipped with the through hole 6 that power supply source line passes, described lamp housing 1 is tightly connected with lampshade 4, described substrate 2 periphery and lamp housing 1 are tightly connected, and are also provided with sealing rubber ring between power line and through hole 6.Radiator 5 is tightly connected by fluid sealant 100 and lamp housing 1.
Be provided with O RunddichtringO 7 between described lamp housing 1 and lampshade 4, and between described lampshade 4 and lamp housing 1, be provided with the pressure ring 8 for the compression by lampshade 4, O RunddichtringO 7, lamp housing 1.
Embodiment 1
Component and the parts by weight proportioning of fluid sealant 100 are:
Polyurethane 100 parts;
Acrylate 12 parts;
Oleate 10 parts;
O-phthalic acid dibutyl ester 30 parts;
Active nano-calcium carbonate 1 part.
Above-mentioned fluid sealant is by preparation flow preparation as shown in Figure 2:
S1: after matching well get raw material according to above-mentioned formula, is heated to 70 degrees Celsius of reactions and vacuumizes after 10-30 minute after polyurethane, active nano-calcium carbonate being mixed with oleate;
S2: add acrylate stirring reaction and vacuumize after 5-10 minute;
S3: add o-phthalic acid dibutyl ester stirring reaction and dewater after 5-10 minute and vacuumize obtained finished product.
Test the viscosity of the fluid sealant finally prepared, surface drying time and hot strength, obtain test data in table one.
Wherein, viscosity uses the luxuriant and rich with fragrance viscosimeter of small profits to measure; Surface drying time touches fluid sealant with finger, and record glue is from being expressed into the tack-free time used; Hot strength adopts conventional hot strength test machine.
Embodiment 2
Component and the parts by weight proportioning of fluid sealant 100 are:
Polyurethane 100 parts;
Acrylate 13 parts;
Oleate 15 parts;
O-phthalic acid dibutyl ester 40 parts;
Active nano-calcium carbonate 3 parts.
Above-mentioned fluid sealant is by preparation flow preparation as shown in Figure 2:
S1: after matching well get raw material according to above-mentioned formula, is heated to 85 degrees Celsius of reactions and vacuumizes after 20 minutes after polyurethane, active nano-calcium carbonate being mixed with oleate;
S2: add acrylate stirring reaction and vacuumize after 8 minutes;
S3: add o-phthalic acid dibutyl ester stirring reaction and dewater after 6 minutes and vacuumize obtained finished product.
Test the viscosity of the fluid sealant finally prepared, surface drying time and hot strength, obtain test data in table one.
Embodiment 3
Component and the parts by weight proportioning of fluid sealant 100 are:
Polyurethane 100 parts;
Acrylate 15 parts;
Oleate 20 parts;
O-phthalic acid dibutyl ester 50 parts;
Active nano-calcium carbonate 5 parts.
Above-mentioned fluid sealant is by preparation flow preparation as shown in Figure 2:
S1: after matching well get raw material according to above-mentioned formula, is heated to 90 degrees Celsius of reactions and vacuumizes after 10 minutes after polyurethane, active nano-calcium carbonate being mixed with oleate;
S2: add acrylate stirring reaction and vacuumize after 5 minutes;
S3: add o-phthalic acid dibutyl ester stirring reaction and dewater after 5 minutes and vacuumize obtained finished product.
Test the viscosity of the fluid sealant finally prepared, surface drying time and hot strength, obtain test data in table one.
Test data
Table one
As can be seen from the above table, fluid sealant of the present invention has sealing and adhesive property preferably, its viscosity is high, hot strength is low, surface drying time is short, be highly suitable for being tightly connected of radiator and shell in sealing LED, effectively can prevent from forming gap between radiator and shell, prevent steam and dust from entering LED inside by gap and affecting its service life.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (5)
1. a sealing LED lamp, comprise lamp housing, substrate, the LED light module be arranged on substrate, lampshade and the radiator under being arranged on substrate, described substrate and radiator are equipped with the through hole that power supply source line passes, it is characterized in that: described radiator is connected with body seal by fluid sealant, component and the parts by weight proportioning of described fluid sealant are:
Polyurethane 100 parts;
Acrylate 12-15 part;
Oleate 10-20 part;
O-phthalic acid dibutyl ester 30-50 part;
Active nano-calcium carbonate 1-5 part;
Described fluid sealant is prepared in the following way:
S1: after matching well get raw material according to above-mentioned formula, is heated to 70-90 degree Celsius of reaction and vacuumizes after 10-30 minute after polyurethane, active nano-calcium carbonate being mixed with oleate;
S2: add acrylate stirring reaction and vacuumize after 5-10 minute;
S3: add o-phthalic acid dibutyl ester stirring reaction and dewater after 5-10 minute and vacuumize obtained finished product.
2. sealing LED lamp according to claim 1, is characterized in that: component and the parts by weight proportioning of described fluid sealant are:
Polyurethane 100 parts;
Acrylate 13 parts;
Oleate 15-20 part;
O-phthalic acid dibutyl ester 30-40 part;
Active nano-calcium carbonate 1-3 part.
3. sealing LED lamp according to claim 1 and 2, is characterized in that: be provided with zero RunddichtringO between described lamp housing and lampshade, and is provided with the pressure ring for the compression by lampshade, zero RunddichtringO, lamp housing between described lampshade and lamp housing.
4. sealing LED lamp according to claim 1 and 2, is characterized in that: be also provided with sealing rubber ring between described through hole and described power line.
5. sealing LED lamp according to claim 1, is characterized in that: described fluid sealant is prepared in the following way:
S1: after matching well get raw material according to above-mentioned formula, is heated to 85 degrees Celsius of reactions and vacuumizes after 20 minutes after polyurethane, active nano-calcium carbonate being mixed with oleate;
S2: add acrylate stirring reaction and vacuumize after 5 minutes;
S3: add o-phthalic acid dibutyl ester stirring reaction and dewater after 10 minutes and vacuumize obtained finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310321053.9A CN103398304B (en) | 2013-07-23 | 2013-07-23 | Sealed LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310321053.9A CN103398304B (en) | 2013-07-23 | 2013-07-23 | Sealed LED lamp |
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| Publication Number | Publication Date |
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| CN103398304A CN103398304A (en) | 2013-11-20 |
| CN103398304B true CN103398304B (en) | 2015-06-03 |
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| CN201310321053.9A Active CN103398304B (en) | 2013-07-23 | 2013-07-23 | Sealed LED lamp |
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| CN108949043A (en) * | 2018-07-16 | 2018-12-07 | 广州昱辰元创节能环保科技有限公司 | A kind of building board marine glue and its preparation method and application |
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| CN1288221C (en) * | 2004-06-24 | 2006-12-06 | 淄博海特曼化工有限公司 | Solvent-free high-strength polyurethane cementing sealing glue and method for making same |
| CN101551073A (en) * | 2008-03-31 | 2009-10-07 | 昆山太得隆机械有限公司 | LED light distribution heat dissipating device generally used for street lamp |
| EP2314636B1 (en) * | 2009-10-23 | 2012-08-29 | Universidad Del Pais Vasco-Euskal Herriko Unibertsitatea | Aqueous hybrid polyurethane-acrylic adhesives |
| CN201992485U (en) * | 2011-01-19 | 2011-09-28 | 林峻毅 | LED (light-emitting diode) light source module with easy heat dissipation |
| CN202017914U (en) * | 2011-01-19 | 2011-10-26 | 林峻毅 | LED tubular lamp with column-shaped radiator structure |
| CN202091899U (en) * | 2011-03-28 | 2011-12-28 | 郑皓嵘 | A multifunctional LED fixture |
| JP2012231022A (en) * | 2011-04-26 | 2012-11-22 | Hitachi Chem Co Ltd | Method of manufacturing semiconductor wafer with adhesive layer, adhesive, and semiconductor device |
| CN102952515A (en) * | 2011-08-19 | 2013-03-06 | 朱云利 | Preparation method of polyurethane sealant |
| CN102504748B (en) * | 2011-11-07 | 2014-01-08 | 广州机械科学研究院有限公司 | Silane modified polyurethane sealing glue with quick surface dry as well as preparation and application thereof |
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Address after: 315000 Zhujiaqiao village, jishigang Town, Haishu District, Ningbo City, Zhejiang Province Patentee after: Ningbo Aishi Electric Equipment Co.,Ltd. Address before: 315171 Zhejiang city of Ningbo province Yinzhou District Ji Shi Gang Zhen Zhu Jia Qiao Cun Patentee before: Ningbo Aishi Electric Equipment Co.,Ltd. |
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