CN104392618A - Design method of anti-dazzle LED lamp - Google Patents
Design method of anti-dazzle LED lamp Download PDFInfo
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- CN104392618A CN104392618A CN201410550666.4A CN201410550666A CN104392618A CN 104392618 A CN104392618 A CN 104392618A CN 201410550666 A CN201410550666 A CN 201410550666A CN 104392618 A CN104392618 A CN 104392618A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/095—Traffic lights
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/12—Combinations of only three kinds of elements
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a design method of an anti-dazzle LED lamp. The core of the design method is characterized in that an extinction insert unit is added in a lens sink slot of the anti-dazzle LED lamp. Distances h between the bottom surface of the extinction insert unit and the notch of the sink slot are adjusted by multiple times to obtain a light intensity distribution curve of the adjustment at each time. The value of the center light intensity is compared with an initial value of the center light intensity with no extinction insert unit, a light intensity value of a half-angle A degree is compared with an initial value of the half-angle A degree, and a light intensity value of a half-angle B degree is compared with an initial value of the half-angle B degree. If the center light intensity attenuation is within a preset standard percentage number range, the light intensity value attenuation of the half-angle A degree is over 40%, and the light intensity attenuation of the half-angle B degree is over 50%, the value of the current distance h between the bottom surface of the extinction insert unit and the notch of the sink slot is the optimum one. According to the invention, because the extinction insert unit is fixed in the lens sink slot, compared with the original optical system with no extinction insert unit, the edge dazzle of the invalid region is obviously improved.
Description
Technical field
The present invention relates to LED traffic lights technical field, particularly a kind of method for designing of glare prevention LED lamp.
Background technology
Along with the lifting of control of traffic and road, get more and more at the supervising device of taking pictures at crossing, intelligent transportation light compensating lamp, as one of its ingredient, plays the effect become more and more important.In the process of taking pictures, need stronger light could be clear by scene capture, but high light causes dazzling uncomfortable to the pedestrian in roadside and automobile driver, namely dazzle, for the glare problem that the invalid light of one-lane light compensating lamp produces, the effective optical angle in bicycle road is 14 degree, and dazzle Que Jiao is 20 degree, being namely the light intensity of normal direction 0 degree to monolateral 10 degree of these scopes that rotate a circle, is exactly invalid light beyond 20 degree.
Anti-glare lamp of the prior art is divided into three kinds:
The first scheme as shown in Figure 1, Anti-glare lamp comprises support 1, lens 3, LED light source 2 is provided with in LED light source accommodation space bottom support 1, lens interior is provided with groove 4, and the bottom land of groove 4 is a plane, does not have optically focused effect, therefore the light of intermediate beam is very low for central light strength contribution, central light strength is the light intensity in 0 degree of direction, and namely along the direction of the normal 7 of LED light-emitting area, the normal 7 of LED light-emitting area is also optical axis; According to optical simulation software and actual product test, the light of intermediate beam is no more than 5% for the contribution proportion of central light strength, and affecting very little, is but the basic source of edge glare, and therefore that people can be made to occur is dazzling for the first scheme, makes people uncomfortable.
First scheme as shown in Figure 2, the bottom land 41 of groove 4 is for changing convex outward into, by refraction of light path, intermediate beam is collimated, avoid the generation of invalid dazzle, the program is effective for approximate pointolite, but LED light source itself is not pointolite, light-emitting area has geometric configuration, this convex outward is close to LED light source simultaneously, cannot realize a light beam all controls within 20 degree of scopes, this convex surface can the geometric configuration imaging of LED out simultaneously, there will be piebald, the lens ensemble mechanical dimension of first scheme is larger, make the pointolite that LED light source becomes approximate, intermediate beam can be realized to control within the scope of 20 degree, because lens sizes is larger, therefore corresponding whole lamp build volumes is also very large, manufacturing cost is high.
The third scheme as shown in Figure 3, a delustring grid 6 is placed at its outer, for eliminating the invalid dazzle beyond 20 degree, as Fig. 3 can find out, delustring grid 6 is not only high but also long relative to lens, and make the increase of whole lamp height very many, build is bigger than normal, be unfavorable for the installation of whole lamp, and the cost of delustring grid 6 is very high.
Summary of the invention
To the object of the invention is to overcome in existing product not enough, the invention provides a kind of method for designing of glare prevention LED lamp, thus LED is had structure is simple, compact, cost is low, not dazzling effect.
In order to achieve the above object, the present invention is achieved by the following technical solutions:
A method for designing for glare prevention LED lamp, comprises the following steps:
Lens are gone out in optical software modeling, the end face of lens is exiting surface, the side of lens is a fully reflecting surface or reflecting surface, lens base is provided with deep gouge, this deep gouge has makes light enter into the incident side of lens, incident end face, LED light source is set at the center position place of deep gouge notch, the size of lens exiting surface and the size of whole lamp are set simultaneously;
Simulation LED light source is luminous, obtains the original curve of light distribution, and obtains the initial value of central light strength, the initial value of half-angle A degree place light intensity and the initial value of half-angle B degree place light intensity in effective light region in deep gouge without when delustring mold insert;
Delustring mold insert is increased in lens deep gouge, repeatedly adjust the distance h between delustring mold insert bottom surface and deep gouge notch, curve of light distribution when being adjusted each time, the value of central light strength and the initial value of central light strength are compared, the value of the light intensity at half-angle A degree place and the initial value at half-angle A degree place compare, the value of the light intensity at half-angle B degree place and half-angle B degree place initial value compare, if central light strength decay is within preset standard number percent number, the value decay of the light intensity at half-angle A degree place is more than 40%, the decay of the light intensity at half-angle B degree place is more than 50%, the value of the distance h then now between delustring mold insert bottom surface and deep gouge notch is best h value.
As preferably, the position crossing with incident side of the plane residing for the bottom surface of delustring mold insert is just the incidence point of the outermost light path in the effective light region of lens profile.
As preferably, deep gouge shape is cylindrical or truncated cone-shaped.
As preferably, the shape of delustring mold insert is right cylinder or Rotary-table.
As preferably, the size of described delustring mold insert end face is identical with the size of deep gouge bottom land.
As preferably, described delustring mold insert is a solid.
As preferably, delustring mold insert is the plastics or the metal that play photoextinction.
Beneficial effect of the present invention is as follows:
1, the present invention is provided with delustring mold insert at lens deep gouge internal fixtion, and with the former optical system ratio not adding delustring mold insert, the edge glare of inactive area has clear improvement, and the light intensity change of effective coverage, center is very little simultaneously.It is simple that the program has structure, the advantages such as compact, applied widely, versatility is good, cost is low, easy to control, anti-dazzle scope is large.
2, the present invention is relative to traditional structure, there is compact conformation, with low cost, versatility is good, without hot spot defects such as piebalds, and the advantages such as central light strength impact is little, the most important thing is that naked eyes can not be eliminated to the invalid veiling glare of LED light source and edge in direct viewing, thus fundamentally improve the dazzle of whole lamp, decrease intelligent traffic light and disturb for the light of neighbouring pedestrian, resident, driver, impact is taken pictures required light intensity hardly again simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first scheme of the prior art;
Fig. 2 is the structural representation of first scheme of the prior art;
Fig. 3 is the structural representation of the third scheme of the prior art;
Fig. 4 is the structural representation of a kind of glare prevention LED lamp of the present invention;
Fig. 5 is that in embodiment, in TRACEPRO software, light-emitting area is the surface of intensity distribution of the LED light source of 1.7mm × 1.7mm;
Fig. 6 is the curve of light distribution figure arranged in TRACEPRO software in embodiment without delustring mold insert in deep gouge;
Fig. 7 be increase delustring mold insert in embodiment TRACEPRO software, curve of light distribution figure that h is 3mm;
Fig. 8 be increase delustring mold insert in embodiment TRACEPRO software, curve of light distribution figure that h is 3.3mm;
Fig. 9 be increase delustring mold insert in embodiment TRACEPRO software, curve of light distribution figure that h is 3.5mm;
Figure 10 be increase delustring mold insert in embodiment TRACEPRO software, curve of light distribution figure that h is 3.8mm;
Figure 11 be increase delustring mold insert in TRACEPRO software, curve of light distribution figure that h is 4.5mm;
Figure 12 is the illumination effect schematic diagram of LED when delustring mold insert thickness being set in embodiment 0;
Figure 13 is delustring mold insert height 1.7mm in embodiment, and offers the interstitial hole that diameter is 1mm, illumination effect figure when H value is 3.5mm;
Figure 14 is embodiment delustring mold insert height 6.61mm, and interstitial hole diameter is 1mm, the illumination effect figure that delustring mold insert height is 6.61mm, H when being 3.5mm;
Figure 15 is the curve of light distribution figure that the basis based on Figure 14 obtains.
Embodiment
Below in conjunction with Figure of description, technical scheme of the present invention is described further:
As shown in Figure 4, a kind of glare prevention LED lamp of the present embodiment, comprise LED light source 61, lens 62 and support 6, the end face 623 of lens 62 is exiting surface, the side 622 of lens 62 is a fully reflecting surface or reflecting surface, lens 62 bottom surface is provided with deep gouge 621, this deep gouge 621 has the incident side 624 making light enter into lens 62, incident end face 625, LED light source 61 is in the center position place of deep gouge 621 notch, the incident end face 625 of deep gouge 621 is fixed with delustring mold insert 5, the plane residing for bottom surface 51 of delustring mold insert 5 position crossing with incident side 624 is just the incidence point 8 of the outermost light path in effective light region, lens 62 side.
Specifically, delustring mold insert 5 is for playing plastics or the metal of photoextinction, and as delustring mold insert 5 is identical with lens 62 material, both are connected together by supersonic welding; Or delustring mold insert 5 is bonded together by glue with the incident end face 625 of deep gouge 621.
Deep gouge 621 shape is up-small and down-big truncated cone-shaped.The shape of delustring mold insert 5 is right cylinder.The intermediate rays of LED light source 61 is blocked by delustring mold insert 5, and therefore intermediate rays cannot penetrate, and the side 622 being in the rays pass through lens 62 of the both sides of intermediate rays is reflected, then collimate light penetrates by the end face 623 of scioptics 62.
Distance h between the notch of delustring mold insert 5 bottom surface and deep gouge 621 is an important parameter, the side 622 of lens 62 is divided into ray effective area S and process redundancy section Y, if the distance bottom delustring mold insert 5 and between LED light source 61 is bigger than normal, just have light and penetrate light from process redundancy section Y, be exactly specifically, light directly penetrates from the position beyond the border of the effective coverage S of lens 62 side by the end face of light injection or the direct scioptics 62 of light, now will produce dazzle.If the distance h bottom delustring mold insert 5 and between the notch of deep gouge 621 is on the low side, the too much light beam of the incident side 624 of deep gouge 621 can be caused to be kept off, affect the light intensity of LED illumination intensity and intermediate light.
Therefore, the distance h extremely best h value adjusted between delustring mold insert 5 bottom surface and the notch of deep gouge 621 is needed when designing, namely the position making the plane residing for the bottom surface of the bottom of delustring mold insert 5 or delustring mold insert 5 crossing with the incident side of deep gouge 621 is just the incidence point 8 of the outermost light path of reflecting surface effective coverage S, reflecting surface effective coverage S refers to the effective coverage that reflection place occurs in the incident side of lens 62 light, the side 622 of incidence point 8 scioptics 62 of outermost light path is reflected, then collimate light penetrates by the end face of scioptics 62.Region outside the S of effective coverage, place, lens 62 side is process redundancy section Y, if there is light to penetrate light from process redundancy section Y, then can produce glare problem.Intermediate light is blocked by delustring mold insert 5, and intermediate light cannot penetrate, naked eyes cannot direct viewing to LED light source, efficiently solve glare problem.
The present invention compares with the first scheme in prior art, and the incident end face of deep gouge is fixed with delustring mold insert, and the intermediate rays of LED light source is blocked by delustring mold insert, makes naked eyes cannot direct view led light source, and eliminates the invalid veiling glare beyond 20 degree.
In the present invention and prior art, first scheme contrasts, the intermediate rays of LED light source 61 of the present invention is blocked by delustring mold insert 5, and therefore intermediate rays cannot penetrate, and of the present inventionly sacrifices intermediate beam, make its not light spill, thus just there is not the problem of piebald yet.
In the present invention and prior art, the third scheme compares, and its whole height also with originally keeps the same, and make structure compacter, versatility is good, and be therefore conducive to the installation of whole lamp, volume is little.
A design job operation for glare prevention LED lamp, comprises the following steps:
Adopt TRACEPRO software to simulate, import in software by a kind of for the present invention structure of glare prevention LED lamp, arrange LED light source light-emitting area and be defined as 1.7mm × 1.7mm, whole lamp is of a size of φ 20.8mm × 13.2mm; The light intensity curve of LED light source self as shown in Figure 5.
By TRACEPRO software whole lamp simulated optical system: as shown in Figure 6, arrange and obtain the original curve of light distribution without delustring mold insert, the initial value obtaining 0 degree of central light strength is 3000cd, and the initial value of half-angle 12 degree of place's light intensity is 200cd, and the initial value of half-angle 14 degree of place's light intensity is 100cd.
As shown in Figure 7, delustring mold insert is increased in TRACEPRO software, and obtaining the curve of light distribution figure that h value is 3mm, the value of central light strength is 2580cd, is 86% of initial value, the light intensity at half-angle 12 degree of places is 100cd, for 50% of initial value, the dazzle in this direction comparatively initial value has decayed 50%, and the light intensity at half-angle 14 degree of places is 40cd, for 60% of initial value, the dazzle in this direction comparatively initial value has decayed 60%;
As shown in Figure 8, delustring mold insert is increased in TRACEPRO software, and obtaining the curve of light distribution figure that h value is 3.3mm, the value of central light strength is 2580cd, is 96.7% of initial value, the light intensity at half-angle 12 degree of places is 100cd, for 50% of initial value, the dazzle in this direction comparatively initial value has decayed 50%, and the light intensity at half-angle 14 degree of places is 40cd, for 60% of initial value, the dazzle in this direction comparatively initial value has decayed 60%;
As shown in Figure 9, delustring mold insert is increased in TRACEPRO software, and obtaining the curve of light distribution figure that h value is 3.5mm, the value of central light strength is 2950cd, is 98.3% of initial value, the light intensity at half-angle 12 degree of places is 100cd, for 50% of initial value, the dazzle in this direction comparatively initial value has decayed 50%, and the light intensity at half-angle 14 degree of places is 40cd, for 60% of initial value, the dazzle in this direction comparatively initial value has decayed 60%;
As shown in Figure 10, delustring mold insert is increased in TRACEPRO software, and obtaining the curve of light distribution figure that h value is 3.8mm, the value of central light strength is 2900cd, is 98.7% of initial value, the light intensity at half-angle 12 degree of places is 100cd, for 50% of initial value, the dazzle in this direction comparatively initial value has decayed 50%, and the light intensity at half-angle 14 degree of places is 40cd, for 60% of initial value, the dazzle in this direction comparatively initial value has decayed 60%;
As shown in figure 11, delustring mold insert is increased in TRACEPRO software, and obtaining the curve of light distribution figure that h value is 4.5mm, the value of central light strength is 2970cd, is 98.8% of initial value, the light intensity at half-angle 12 degree of places is 148cd, for 74% of initial value, the dazzle in this direction comparatively initial value has decayed 26%, and the light intensity at half-angle 14 degree of places is 52cd, for 52% of initial value, the dazzle in this direction comparatively initial value has decayed 48%;
Can draw from above Data Comparison, H is proper between 3.3-3.8.Central light strength decay is within 5%, and at 12 degree, the dazzle in 14 degree of directions has decayed 50% and 60% respectively.
H value is too low, such as 3mm, and central light strength decay reaches 14%.
H value is too high, such as 4.5mm, and the dazzle in 12 degree of .14 degree directions has only decayed 26% and 48% respectively, and effect is not as H value is between 3.3-3.8.
For proving practicality of the present invention and validity, then carry out the theoretical modeling of delustring mold insert central aperture:
Because delustring mold insert is all absorbed by the light of centre, therefore think from general knowledge and not only the veiling glare beyond 20 degree is eliminated, also the effective light within 20 degree is also absorbed simultaneously, if a hole is opened in centre, the light within 20 degree is only allowed to pass through, can is the light beyond 20 degree eliminated, be better?
Do now following Systems Theory analysis:
LED light source light-emitting area definition 1.7*1.7mm, so diagonal line is 2.4mm, so calculate by 2.4mmLED source diameter:
Scheme one, as shown in figure 12, a point (diameter of point is approximately 0) is dug in centre, and delustring mold insert thickness is approximately 0; When H value is 3.5mm, beam angle corresponding to intermediate light is 38 degree, more than 20 degree.
Scheme two, as shown in figure 13, highly brings up to 1.7mm by delustring mold insert 5, and offer penetrating interstitial hole 52 in the middle of delustring mold insert 5, the diameter of interstitial hole 52 is 1mm, H value is 3.5mm, and as figure shows, middle largest beam angle still has 36 degree, more than 20 degree.
Scheme three, as shown in figure 14, interstitial hole 52 diameter is 1mm, delustring mold insert height is 6.61mm, H is 3.5mm, largest beam angle is 20 degree, without the light beyond 20 degree, in tracepro software, then simulates the contribution of this part light, obtain light intensity curve figure as shown in figure 15, in fig .15, central light strength (the namely light intensity in 0 degree of direction, the namely normal orientation of LED light-emitting area), central light strength I0=15.3cd, initial value is 3000,15.3/3000=0.51%, almost negligible.This structure manufacture difficulty is large simultaneously, manufacturability complex structure more of the present invention, is unfavorable for batch production.
It should be noted that above what enumerate is only a kind of specific embodiment of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be had.
In a word, all distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (6)
1. a method for designing for glare prevention LED lamp, is characterized in that, comprises the following steps:
Lens are gone out in optical software modeling, the end face of lens is exiting surface, the side of lens is a fully reflecting surface or reflecting surface, lens base is provided with deep gouge, this deep gouge has makes light enter into the incident side of lens, incident end face, LED light source is set at the center position place of deep gouge notch, the size of lens exiting surface and the size of whole lamp are set simultaneously;
Simulation LED light source is luminous, obtains the original curve of light distribution, and obtains the initial value of central light strength, the initial value of half-angle A degree place light intensity and the initial value of half-angle B degree place light intensity in effective light region in deep gouge without when delustring mold insert;
Delustring mold insert is increased in lens deep gouge, repeatedly adjust the distance h between delustring mold insert bottom surface and deep gouge notch, curve of light distribution when being adjusted each time, the value of central light strength and the initial value of central light strength are compared, the value of the light intensity at half-angle A degree place and the initial value at half-angle A degree place compare, the value of the light intensity at half-angle B degree place and half-angle B degree place initial value compare, if central light strength decay is within preset standard number percent number, the value decay of the light intensity at half-angle A degree place is more than 40%, the decay of the light intensity at half-angle B degree place is more than 50%, the value of the distance h then now between delustring mold insert bottom surface and deep gouge notch is best h value.
2. the method for designing of a kind of glare prevention LED lamp according to claim 1, is characterized in that, the position crossing with incident side of the plane residing for the bottom surface of delustring mold insert is just the incidence point of the outermost light path in the effective light region of lens profile.
3. the method for designing of a kind of glare prevention LED lamp according to claim 1, it is characterized in that, described deep gouge shape is cylindrical or truncated cone-shaped.
4. the method for designing of a kind of glare prevention LED lamp according to claim 1, it is characterized in that, the shape of described delustring mold insert is right cylinder or Rotary-table.
5. the method for designing of a kind of glare prevention LED lamp according to claim 1, it is characterized in that, the size of described delustring mold insert end face is identical with the size of deep gouge bottom land.
6. the method for designing of a kind of glare prevention LED lamp according to claim 1, it is characterized in that, described delustring mold insert is a solid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550666.4A CN104392618B (en) | 2014-10-16 | A kind of method for designing of glare prevention LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550666.4A CN104392618B (en) | 2014-10-16 | A kind of method for designing of glare prevention LED lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104392618A true CN104392618A (en) | 2015-03-04 |
| CN104392618B CN104392618B (en) | 2017-01-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021127838A1 (en) * | 2019-12-23 | 2021-07-01 | 深圳大学 | Anti-dazzle lens unit and led light source system |
| CN114580039A (en) * | 2020-12-01 | 2022-06-03 | 深圳市泛科科技有限公司 | Design method of rectangular uniform-luminous waterproof lamp tube and lamp |
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| US20060104594A1 (en) * | 2004-11-18 | 2006-05-18 | Waring Patrick S | Method and apparatus for directing light from a light source |
| CN200949775Y (en) * | 2006-09-07 | 2007-09-19 | 田温志 | High power cold light variable-focus reflection type spotlight |
| CN202152988U (en) * | 2011-07-27 | 2012-02-29 | 联钢精密科技(苏州)有限公司 | Optical lens |
| CN103982855A (en) * | 2013-02-08 | 2014-08-13 | 香港理工大学 | Lens and light-emitting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20060104594A1 (en) * | 2004-11-18 | 2006-05-18 | Waring Patrick S | Method and apparatus for directing light from a light source |
| CN200949775Y (en) * | 2006-09-07 | 2007-09-19 | 田温志 | High power cold light variable-focus reflection type spotlight |
| CN202152988U (en) * | 2011-07-27 | 2012-02-29 | 联钢精密科技(苏州)有限公司 | Optical lens |
| CN103982855A (en) * | 2013-02-08 | 2014-08-13 | 香港理工大学 | Lens and light-emitting device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021127838A1 (en) * | 2019-12-23 | 2021-07-01 | 深圳大学 | Anti-dazzle lens unit and led light source system |
| CN114746921A (en) * | 2019-12-23 | 2022-07-12 | 深圳大学 | Anti-glare lens unit and LED light source system |
| CN114580039A (en) * | 2020-12-01 | 2022-06-03 | 深圳市泛科科技有限公司 | Design method of rectangular uniform-luminous waterproof lamp tube and lamp |
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Address after: 311113 568 Huabao street, Qian Yuan Town, Deqing County, Huzhou, Zhejiang Patentee after: Zhejiang Yibo high tech technology Co., Ltd. Address before: 311112 Liangyuan street, Liangzhu street, Yuhang District, Hangzhou, Zhejiang, 326 Patentee before: Hangzhou Eboylamp Electronics Co.,Ltd. |