CN203215558U - LED lamp shade capable of improving lighting uniformity - Google Patents
LED lamp shade capable of improving lighting uniformity Download PDFInfo
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- CN203215558U CN203215558U CN 201320085297 CN201320085297U CN203215558U CN 203215558 U CN203215558 U CN 203215558U CN 201320085297 CN201320085297 CN 201320085297 CN 201320085297 U CN201320085297 U CN 201320085297U CN 203215558 U CN203215558 U CN 203215558U
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Abstract
The utility model provides an LED lamp shade capable of improving lighting uniformity. The LED lamp shade is a lamp accessory, and mainly applied to the fields like LED bulb lamps and LED down lamps. The LED lamp shade comprises a lamp shade body. The inner wall of the lamp shade body is provided with a first coating and a second coating. The first coating is prepared after the mixture of glue and first particles solidifies. The second coating is prepared after the mixture of glue and the second particles solidifies. The first particles and the second particles are both light-permeable particles. The first coating and the second coating as a whole become thinner gradually from the top portion of the lamp shade to the opening end of the lamp shade. Compared with a traditional lamp shade, the LED lamp shade capable of improving lighting uniformity has the advantages that the coatings are additionally arranged at the arc-shaped end, namely the position where light of a light source can directly shine, of the lamp shade, light-emitting rate at the position is lowered, and scattering rate is improved.
Description
Technical field
The utility model provides a kind of lampshade, is a kind of lamp fittings, mainly is used in fields such as LED bulb lamp, LED Down lamp.
Background technology
LED bulb lamp, Down lamp are used more and more widely at present, are replacing incandescent lamp and fluorescent lamp fast.Present LED bulb lamp, the primary clustering of Down lamp is all similar substantially, comprise lamp holder, radiator, driving power, several parts such as light source and lampshade, because the strong problem of the directionality of led light source, at present for obtaining the LED bulb lamp of uniformly light-emitting more, Down lamp, people have been extensive use of ground glass, add PC or the PMMA of diffusant, perhaps containing with silica at glass surface coating one deck is the diffusant of representative, to realize the abundant mixing of light in lampshade, reduce light at the amount of light of its direct projection direction, yet since the lampshade product that comes out of above-mentioned these method manufacturings on the whole diffusion effect be identical, light transmittance also is identical, so problem below the final existence still: on light source direct projection direction, lampshade is the brightest, just bright dipping is maximum, though at the edge of light source because the effect of scattering has some light transmissions, but amount of light still seldom, cause on these directions brightness lower, this also be why existing be the less major reason in the luminous angle of led light source product space of representative with the LED bulb lamp.
As Fig. 1, a kind of lampshade commonly used in the existing LED bulb lamp manufacturing technology, this lampshade generally is by glass, PC, materials such as PMMA are made, it has good light transmission, for example, the lampshade light transmittance of being made by some glass can reach 99%, the lampshade of being made by PC or PMMA also can reach more than 90%, and this lampshade has directly improved the light efficiency of LED light fixture to right light transmittance height, but brought another serious problems---dazzle, because the stronger characteristic of directionality of led light source, in use, the LED light fixture that adopts above-mentioned lampshade to make is only luminous in certain angle (generally about 40 °), dazzle is very obvious in this certain angle, can produce certain injury to human eye vision, and outside above-mentioned angle, because the illumination deficiency, cause dark area effect again, can't satisfy people's instructions for use.In order to address the above problem, people have developed a kind of lampshade as shown in Figure 2, people select silica dioxide granule and glue mixed and are coated in the glass lamp shade inwall, form layer of even frosted film, perhaps in PC or PMMA particle, mix certain diffusant, and then make the lampshade that has dispersion effect, though above-mentioned several process lampshade has increased the scattering of light in lampshade to a certain extent, make light when launching lampshade, become even, but do not address the above problem yet, its main cause is: in glass lamp shade during applying coating, coating is thinner and owing to the reason of production technology, arc top at lampshade is thinner, more thick the closer to peristome, this just makes after manufacturing light fixture, in that just the arc top light transmittance of lampshade is the highest in the face of the direction of light source luminescent, brightness is the highest, and other part light transmittances are low, brightness is also lower, the lampshade of making for the PC that has mixed diffusion particle and PMMA also faces same problem, still has the inhomogeneous dazzle just of space luminescence and dark space problem.
Summary of the invention
For lighting space luminescence angles such as the LED bulb lamp that solve to use adopts prior art to produce, Down lamp less than normal, especially bright dipping is many in the middle of, brightness is high, and the edge bright dipping is few, the problem that brightness is low, the utility model improves existing lampshade, and a kind of novel lampshade is provided.The technical solution of the utility model is as follows:
A kind of LED lampshade that improves illumination uniformity includes the lampshade body, scribbles first coating and second coating on the lampshade inner body wall successively; Make after the mixture solidified of described first coating by glue and first particle; Make after the mixture solidified of described second coating by glue and second particle; Described first particle and second particle be can printing opacity particle; Described first coating and second coating as a whole, thickness near the lampshade top to the lampshade openend by thick attenuation.
This lampshade inside has the coating of high transmission rate, be divided into first coating and second coating, all formed by glue and finely ground particles in each coating, wherein first coating and second coating are as a whole, the last thickness of light direct beam direction (i.e. the position at close lampshade top) at light source is thicker, thinner in the position (namely near lampshade openend position) that the light of light source can't direct projection arrives, after such lampshade is used on the lamp, on the direction that the light of light source shines directly into, because coating is thicker, contained finely ground particles is more, make on this direction, the transmitance of light reduces, and scattered power increases, in the thinner position of other coating layer thicknesses, scattering phase is to less, transmitance is higher relatively, realizes that finally whole lampshade bright dipping reaches effect comparatively uniformly, and the space luminescence angle of whole lamp also can obviously be improved.
Further, for guaranteeing that lampshade is inner or all have scattering power towards the one side of light source, what first coating was complete is distributed on the lampshade body, this distribution mode can be even distribution, and is all identical at the thickness of all positions, also can be non-homogeneous distribution, thicker at some position thickness, other position thinner thicknesses, for example the lampshade centre position is thicker, and the oral area thinner thickness keeps to the side.
In addition, first coating can be coated with on second coating fully, also can partly be coated with on second coating.
For example: wherein when lampshade is the class hemispherical, first coating and second coating as a whole, with from the lampshade bodies top to lampshade body openings edge gradually the mode of attenuation distribute; When lampshade is the less cambered surface of plane or radian, the distribution mode of coating for around the mind-set from lampshade gradually the mode of attenuation distribute.
Above-mentioned glue can be a kind of in acetoxyl group silica gel, alkoxyl silica gel, the silicone resin silica gel, for example DOW CORNING 3140 alkoxyl silica gel, EA9189 silica gel, and perhaps 1-2577, I-2560, these silica gel all are the glue with good transparency.
The first above-mentioned particle can be the mixture of a kind of in silica dioxide granule, the glass particle or two kinds; Preferred silica dioxide granule; The average particle size range of first particle is 1～1000 micron, preferably 1～100 micron.
The second above-mentioned particle can be the mixture of a kind of in silica dioxide granule, the glass particle or two kinds; Preferred silica; The average particle size range of second particle is 10～2000 microns, preferably 10～200 microns.
The average grain diameter of second particle is preferably otherwise less than the average grain diameter of first particle, so that in the position that light shines directly into, light is wider to be easy to be dispersed into the position that other light sources can't shine directly into.
The material of above-mentioned lampshade body can adopt glass, quartz, Merlon (PC), polymethyl methacrylate (PMMA) etc. to have the material of light transmission.
Above-mentioned curing schedule can adopt conventional glue curing method, for example: place naturally and solidify, be heating and curing, add curing agent etc., can adopt known method to select.
Described first coating and second coating be as a whole at the thickness range at the top of lampshade 2～5mm preferably, at the thickness range of openend 0.1～1mm preferably.
The utility model provides a kind of preparation method of above-mentioned LED lampshade further, and concrete technical scheme is:
A kind of manufacture method that improves the LED lampshade of illumination uniformity comprises the steps:
S1: glue, first particle are mixed, as mixture I; Open Side Down to allow lampshade, and mixture I is sprayed on the lampshade top, and mixture I is flowed down along the lampshade inwall, mixture I solidified, as first coating again;
S2: glue, second particle are mixed, as mixtures II; Allow the lampshade opening upwards, mixtures II is sprayed on described first coating, again mixtures II is solidified, get final product.
Among the above-mentioned step of manufacturing S1, after mixture I being sprayed on place, lampshade top, lampshade is rotated around central shaft.Can accelerating mixture flow allows the lampshade body around the central shaft rotation, relies on centrifugal force to make mixture cover whole lampshade body internal surface uniformly in lampshade.
Among the above-mentioned step of manufacturing S2, mixture I is being sprayed on first coating, lampshade is rotated around central shaft.It can make coating more even, if with rotating speed control in certain limit, guarantee first coating and with second coating as a whole, be by crown center to the lampshade openend gradually by thick attenuation.
When particle was mixed with glue, the mass concentration of first particle was preferably 15%～40%; The mass concentration of second particle preferably 15%～40%.
In the process of spraying mixt, by control quantity for spray and the rotating speed of routine, can realize with coating to remain top place thicker and the lampshade opening is thinner.As preferred parameter, when in step S1, lampshade being rotated, preferably 30～300 rev/mins of rotating speeds, when in step S2, lampshade being rotated, preferably 6～600 rev/mins of rotating speeds.
Technique effect
The utility model provides a kind of lampshade, this lampshade is compared with traditional lampshade, just increased coating in the position that shines directly into of the light of light source in the arc tips of lampshade, make the light emission rate in this position reduce, scattered power raises, thereby makes that the whole bright dipping of the LED light fixture that uses this lampshade to make is more even, has avoided local luminance too high, the situation that local luminance is on the low side, the space luminescence angle of having improved light fixture.
Description of drawings
Fig. 1 is a kind of lampshade cross-sectional view commonly used in the prior art;
Fig. 2 is another kind of lampshade cross-sectional view commonly used in the prior art;
Fig. 3 is the lampshade cross-sectional view that the utility model provides;
Wherein 1 is the lampshade body, the 2nd, and coating, 3 is first coatings, 4 is second coatings; The 5th, the top; The 6th, openend.
The specific embodiment
Make the LED lampshade according to the following steps:
The first step, DOW CORNING EA9189 silica gel and silica dioxide granule are mixed into silica quality concentration is in 25% mixture I and first spraying equipment of packing into, and the average grain diameter of used silica is 5 μ m in this step;
Second step, DOW CORNING EA9189 silica gel and silica dioxide granule are mixed into silica quality concentration is in 35% mixtures II and second spraying equipment of packing into, and the average grain diameter of used silica is 10 μ m in this step;
The 3rd the step, Open Side Down with lampshade body 1, mixture I in first spraying equipment is sprayed on the top 5 of lampshade body 1, and allow mixture I flow to the openend 6 of lampshade body 1 from the top 5 of lampshade body 1, in order to accelerate flowing of coating, can assist with suitable rotation, allow lampshade body 1 around the central shaft rotation, rely on centrifugal force to make mixture I in lampshade, cover whole lampshade body 1 inner surfaces uniformly, the control of this step medium speed is at 100 rev/mins, oven dry forms first coating 3 then; The material of lampshade adopts glass in the present embodiment.
The 4th step, resulting lampshade body 1 opening that has first coating 3 of the 3rd step is made progress, mixtures II in second spraying equipment is sprayed on first coating 3 of lampshade body 1 inner surface, because mixture has certain weight and viscosity, this mixture can slowly flow to 5 places, top of lampshade body 1, for making second coating 4 reach needed distribution in first coating 3, in the process that mixtures II flows downward, also can be in addition suitable rotation, mixtures II is being evenly distributed and thicker at the thickness at the top 5 of lampshade body 1, and the thinner thickness of lampshade body 1 openend 6 positions, in the present embodiment, rotating speed is set to 200 rev/mins, oven dry forms second coating 4 then, finally realizes inner first coating 3 of lampshade and second coating 4 as a whole, by the top 5 of lampshade body 1 to openend 6 attenuation gradually, dispersion effect is better when making illumination, and thinner near openend 6 coatings of lampshade body 1, light transmission is better.
The structure of the LED lampshade for preparing includes lampshade body 1 as shown in Figure 3, and first coating 3 and second coating 4 are arranged on lampshade body 1 inwall; Described first coating 3 and second coating 4 all are to make after the mixture solidified by glue and silica; Described first coating 3 and second coating 4 as a whole, thickness from the top 5 of lampshade body 1 to lampshade openend 6 gradually by thick attenuation.
In the present embodiment, in the LED lampshade that makes, first coating 3 is all covered by second coating 4, is 2 mm in the top of lampshade body 15, the first coatings 3 and second coating 4 thickness as a whole, and at the openend 6 of lampshade body 1, coating layer thickness is 0.1 mm.
When reality is made, in the scope that the luminous angle of light source space that can make second coating 4 only be distributed in the LED light fixture can shine directly into, like this when manufacturing light fixture, the light that shines directly in the light source luminescent on second coating 4 just has more light to be scattered, thereby emit from other positions of light fixture, so just make the bright dipping of lampshade realize effect more uniformly, this has also directly promoted the space luminescence angle of light fixture.
The first step, DOW CORNING 3140 alkoxyl silica gel and silica dioxide granule are mixed into silica quality concentration is in 15% mixture I and first spraying equipment of packing into, and the average grain diameter of used silica dioxide granule is 100 μ m in this step;
Second step, DOW CORNING 3140 alkoxyl silica gel and glass particle are mixed into silica quality concentration is in 40% mixtures II and second spraying equipment of packing into, and the average grain diameter of used glass particle is 200 μ m in this step;
The 3rd the step, Open Side Down with lampshade body 1, mixture I in first spraying equipment is sprayed on the top 5 of lampshade body 1, and allow mixture I flow to the openend 6 of lampshade body 1 from the top 5 of lampshade body 1, in order to accelerate flowing of coating, can assist with suitable rotation, allow lampshade body 1 around the central shaft rotation, rely on centrifugal force to make mixture I in lampshade, cover whole lampshade body 1 inner surfaces uniformly, the control of this step medium speed is at 3 rev/mins, oven dry forms first coating 3 then; The material of lampshade adopts glass in the present embodiment.
The 4th step, resulting lampshade body 1 opening that has first coating 3 of the 3rd step is made progress, mixtures II in second spraying equipment is sprayed on first coating 3 of lampshade body 1 inner surface, because mixture has certain weight and viscosity, this mixture can slowly flow to 5 places, top of lampshade body 1, for making second coating 4 reach needed distribution in first coating 3, in the process that mixtures II flows downward, also can be in addition suitable rotation, mixtures II is being evenly distributed and thicker at the thickness at 5 places, top of lampshade body 1, and the thinner thickness of lampshade body 1 openend 6 positions, in the present embodiment, rotating speed is set to 100 rev/mins, oven dry forms second coating 4 then.
In the present embodiment, in the LED lampshade that makes, first coating 3 is all covered by second coating 4, is 5 mm in the top of lampshade body 15, the first coatings 3 and second coating 4 thickness as a whole, and at the openend 6 of lampshade body 1, coating layer thickness is 1 mm.
The first step, DOW CORNING 1-2577 silica gel and silica dioxide granule are mixed into silica quality concentration is in 40% mixture I and first spraying equipment of packing into, and the average grain diameter of used silica is 1000 μ m in this step;
Second step, DOW CORNING 1-2577 silica gel and glass particle are mixed into silica quality concentration is in 15% mixtures II and second spraying equipment of packing into, and the average grain diameter of used glass particle is 2000 μ m in this step;
The 3rd the step, Open Side Down with lampshade body 1, mixture I in first spraying equipment is sprayed on the top 5 of lampshade body 1, and allow mixture I flow to the openend 6 of lampshade body 1 from the top 5 of lampshade body 1, for flowing of accelerating mixture, can assist with suitable rotation, allow lampshade body 1 around the central shaft rotation, rely on centrifugal force to make mixture I in lampshade, cover whole lampshade body 1 inner surfaces uniformly, the control of this step medium speed is at 300 rev/mins, oven dry forms first coating 3 then; The material of lampshade adopts glass in the present embodiment.
The 4th step, the resulting lampshade body openings that has first coating 3 of the 3rd step is made progress, mixtures II in second spraying equipment is sprayed on first coating 3 of lampshade body 1 inner surface, because mixture has certain weight and viscosity, this mixture can slowly flow to 5 places, top of lampshade body 1, for making second coating 4 reach needed distribution in first coating 3, in the process that mixtures II flows downward, also can be in addition suitable rotation, mixtures II is being evenly distributed and thicker at the thickness at 5 places, top of lampshade body 1, and the thinner thickness of lampshade body 1 openend 6 positions, in the present embodiment, rotating speed is set to 600 rev/mins, oven dry forms second coating 4 then.
In the present embodiment, in the LED lampshade that makes, first coating, 3 part areas are not covered by second coating 4, and at openend 6 places, first coating 3 is not capped.Be 3 mm in the top of lampshade body 15, the first coatings 3 and second coating 4 thickness as a whole, at the openend 6 of lampshade body 1, coating layer thickness is 0.4 mm.
The first step, DOW CORNING 1-2577 silica gel and silica dioxide granule are mixed into silica quality concentration is in 40% mixture I and first spraying equipment of packing into, and the average grain diameter of used silica dioxide granule is 1 μ m in this step;
Second step, DOW CORNING 1-2577 silica gel and glass particle are mixed into silica quality concentration is in 15% mixtures II and second spraying equipment of packing into, and the average grain diameter of used glass particle is 500 μ m in this step;
The 3rd the step, Open Side Down with lampshade body 1, mixture I in first spraying equipment is sprayed on the top 5 of lampshade body 1, and allow mixture I from the top 5 openends 6 that flow to lampshade body 1, for flowing of accelerating mixture, can assist with suitable rotation, allow lampshade body 1 around the central shaft rotation, rely on centrifugal force to make mixture I in lampshade, cover whole lampshade body 1 inner surfaces uniformly, the control of this step medium speed is at 200 rev/mins, and oven dry forms first coating 3 then; The material of lampshade adopts glass in the present embodiment.
The 4th step, resulting lampshade body 1 opening that has first coating 3 of the 3rd step is made progress, mixtures II in second spraying equipment is sprayed on first coating 3 of lampshade body 1 inner surface, because mixture has certain weight and viscosity, this mixture can slowly flow to 5 places, top of lampshade body 1, for making second coating 4 reach needed distribution in first coating 3, in the process that mixtures II flows downward, also can be in addition suitable rotation, mixtures II is being evenly distributed and thicker at the thickness at 5 places, top of lampshade body 1, and the thinner thickness of lampshade body 1 openend 6 positions, in the present embodiment, rotating speed is set to 6 rev/mins, oven dry forms second coating 4 then.
In the present embodiment, in the LED lampshade that makes, first coating, 3 part areas are not covered by second coating 4, and at openend 6 places, first coating 3 is not capped.Be 4 mm in the top of lampshade body 15, the first coatings 3 and second coating 4 thickness as a whole, at the openend 6 of lampshade body 1, coating layer thickness is 0.7 mm.
Claims (7)
1. a LED lampshade that improves illumination uniformity includes lampshade body (1), it is characterized in that: lampshade body (1) inwall scribbles first coating (3) and second coating (4); Make after the mixture solidified of described first coating (3) by glue and first particle; Make after the mixture solidified of described second coating (4) by glue and second particle; Described first particle and second particle be can printing opacity particle; Described first coating (3) and second coating (4) as a whole, thickness near the top (5) of lampshade body (1) to lampshade openend (6) by thick attenuation.
2. the LED lampshade of raising illumination uniformity according to claim 1 is characterized in that: all be coated with second coating (4) on described first coating (3).
3. the LED lampshade of raising illumination uniformity according to claim 1, it is characterized in that: described first coating (3) top is coated with second coating (4).
4. the LED lampshade of raising illumination uniformity according to claim 1 is characterized in that: described first particle and second particle are a kind of in silica dioxide granule, the glass particle.
5. the LED lampshade of raising illumination uniformity according to claim 1, it is characterized in that: the average particle size range of described first particle is 1～1000 micron; The average particle size range of described second particle is 10～2000 microns.
6. the LED lampshade of raising illumination uniformity according to claim 1, it is characterized in that: described first coating (3) and second coating (4) are 2～5mm at the thickness range at the top (5) of lampshade as a whole, are 0.1～1mm at the thickness range of openend (6).
7. according to the LED lampshade of each described raising illumination uniformity of claim 1～6, it is characterized in that: the average grain diameter of described second particle is not less than the average grain diameter of first particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320085297 CN203215558U (en) | 2013-02-25 | 2013-02-25 | LED lamp shade capable of improving lighting uniformity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320085297 CN203215558U (en) | 2013-02-25 | 2013-02-25 | LED lamp shade capable of improving lighting uniformity |
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| CN203215558U true CN203215558U (en) | 2013-09-25 |
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| CN 201320085297 Expired - Fee Related CN203215558U (en) | 2013-02-25 | 2013-02-25 | LED lamp shade capable of improving lighting uniformity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148439A (en) * | 2013-02-25 | 2013-06-12 | 上舜照明（中国）有限公司 | LED lampshade capable of improving lighting uniformity and fabrication method thereof |
| CN109945104A (en) * | 2019-04-02 | 2019-06-28 | 嘉兴市品鼎电器有限公司 | A kind of multifunctional intellectual electric lighting |
-
2013
- 2013-02-25 CN CN 201320085297 patent/CN203215558U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148439A (en) * | 2013-02-25 | 2013-06-12 | 上舜照明（中国）有限公司 | LED lampshade capable of improving lighting uniformity and fabrication method thereof |
| CN103148439B (en) * | 2013-02-25 | 2014-10-01 | 上舜照明（中国）有限公司 | LED lampshade capable of improving lighting uniformity and fabrication method thereof |
| CN109945104A (en) * | 2019-04-02 | 2019-06-28 | 嘉兴市品鼎电器有限公司 | A kind of multifunctional intellectual electric lighting |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20170225 |