CN107620895A - The anti-dazzle blackboard lightses of LED - Google Patents
The anti-dazzle blackboard lightses of LED Download PDFInfo
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- CN107620895A CN107620895A CN201710857936.XA CN201710857936A CN107620895A CN 107620895 A CN107620895 A CN 107620895A CN 201710857936 A CN201710857936 A CN 201710857936A CN 107620895 A CN107620895 A CN 107620895A
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- lamp body
- led
- dazzle
- led light
- blackboard
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- 239000000463 material Substances 0.000 claims abstract description 9
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000002310 reflectometry Methods 0.000 claims description 3
- 238000005286 illumination Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000009877 rendering Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a kind of anti-dazzle blackboard lightses of LED, including LED light bar, lamp body, end cap and diffuser, diffuser is located at the underface of lamp body, and by and lamp body, the tight fit of end cap forms optics cavity, reflective surface of the LED light bar inside lamp body and remote blackboard, the reflective surface is designed using asymmetric polarisation, so as to form the vertical illumination of high evenness on face to be illuminated, the exiting surface of LED light bar is staggered relatively with reflective surface and towards ceiling direction, without direct emergent ray, can be with the reduction dazzle of high degree, diffuser uses transparent PC or PMMA materials, with higher light extraction efficiency, included in control circuit and remove ripple（Without stroboscopic）Special IC, to ensure fluctuation depth ＜ 1%, the light fixture arrangement in same classroom can use identical pattern of lighting, therefore light fixture layout has uniform, elegant in appearance advantage.
Description
Technical field
The present invention relates to the technical field of LED, in particular to a kind of anti-dazzle blackboard lightses of LED.
Background technology
Blackboard has the function that raising classroom interactions' property and raising attention of student in teaching, in some light environments not
, it is necessary to increase the brightness of blackboard using blackboard lights in the case of good, if the light that blackboard lights is irradiated on blackboard is uneven,
Student and teacher are caused dazzling.
The content of the invention
It is contemplated that solves above-mentioned technical problem to a certain extent.
In view of this, the invention provides a kind of anti-dazzle blackboard lightses of LED, the anti-dazzle blackboard lightses of the LED to have vertical uniform degree
Height, anti-dazzle, without stroboscopic and colour rendering index it is high the characteristics of.
In order to solve the above-mentioned technical problem, the invention provides a kind of anti-dazzle blackboard lightses of LED, consolidated by support and ceiling
Determine and parallel to blackboard, it includes LED light bar, lamp body, end cap and diffuser, it is characterised in that the diffuser is positioned at described
The underface of lamp body, and optics cavity is formed by the tight fit with the lamp body, the end cap, the LED light bar is away from black
Plate is set, and forms reflective surface, the exiting surface of the LED light bar and the reflective surface in the medial surface close to the lamp body
Staggered relatively, the light direction of the exiting surface is towards ceiling.
Further, the center of the LED light bar to the distance of the starting point of the reflective surface is 20 ~ 30mm.
Further, the LED light bar includes multiple LED light sources arranged along lamp body length direction.
Further, the shady face of the LED light bar sets radiator.
Further, the radiator is connected along LED light bar length direction with the both ends of the lamp body.
Further, set in the cavity between the end cap and trim comprising the control circuit for removing ripple application-specific integrated circuit.
Further, the cross section curve of the reflective surface meets cubic curve equation y=ax3+bx2+ cx+d, x are reflector
Radius, y are reflector height, wherein：20mm≤x≤80mm, 0.003≤a≤0.05, -4.25≤b≤- 0.6.65,28.5≤
C≤180, -876≤d≤- 265.
Further, the material of the lamp body is aluminium alloy.
Further, the reflective surface surface is matte surface of the reflectivity control between 0.75 ~ 0.88.
Further, the material of the diffuser is transparent PC or PMMA materials.
The technical effects of the invention are that：According to a kind of anti-dazzle blackboard lightses of LED of the present invention, LED light bar is close to reflective song
The side away from face to be illuminated is simultaneously partial in face, and the reflective surface is designed using asymmetric polarisation, high so as to be formed on face to be illuminated
The vertical illumination of the uniformity, the exiting surface of LED light bar is staggered relatively with reflective surface and towards ceiling direction, without directly outgoing
Light, dazzle can be dramatically reduced, diffuser uses transparent PC or PMMA materials, saturating different from traditional frosted type
Light shield, there is higher light extraction efficiency compared with the latter, the blackboard lights has vertical illumination uniformity height, colour rendering good and light efficiency
High outstanding feature, dazzle will not be caused to have no stroboscopic to Faculty and Students, included in control circuit and remove ripple（Without stroboscopic）
Special IC, to ensure fluctuation depth ＜ 1%, the light fixture arrangement in same classroom can use identical pattern of lighting, and not have to picture
The such slant setting of traditional blackboard lamp, therefore light fixture layout has uniform, elegant in appearance advantage.
Brief description of the drawings
Fig. 1 is the anti-dazzle blackboard lights overall structure figures of a kind of LED according to the present invention；
Fig. 2 is the anti-dazzle blackboard lights sectional views of a kind of LED according to the present invention；
Fig. 3 is the anti-dazzle blackboard lights light distribution curves of a kind of LED according to the present invention；
Fig. 4 is the anti-dazzle blackboard lights scheme of installations of a kind of LED according to the present invention.
Wherein, 1-LED lamp bars；2- radiators；3- lamp bodies；4- control circuits；5- end caps；6- trims；7- diffusers；8-
Lamp support；9- reflective surfaces；The starting point of 10- reflective surfaces.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be with
It is better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
According to Fig. 1 and Fig. 2, from base material of the aluminium alloy as lamp body 3, and according to cubic curve equation y=ax3+
bx2+cx+d（Wherein x is reflector radius, and y is reflector height, 20 mm≤x≤80mm, 0.003≤a≤0.05, -4.25
≤ b≤- 0.6.65,28.5≤c≤180, -876≤d≤- 265）The cross section curve of the inside reflective surface 9 of lamp body 3 is fitted, outside
Sight face is through to installation site and the outer cross section curve for walking to determine aluminium section bar after line position be suitably laid out, aluminium section bar is by squeezing
Press technique to obtain, required length is cut into after carrying out the Ageing Treatment of 1-3 hours, is then carried out to aluminium section bar 0.5-1 hours
Anodized.
According to a particular embodiment of the invention, it is spliced inside lamp body using two identical reflective surfaces 9, is
Meet installation and mitigate the needs of weight, the part that light reflection is had no substantial effect on to curved surface end is cut and increased
Delete, meet the requirement of blackboard or wall illumination more than 500lx in national standard GB50034.
LED light bar 1 includes multiple LED light sources arranged along radiator length direction, and LED light bar 1 will be fixed on radiator
Upper 2, LED light bar 1 is fixed on radiator 2, and the both ends of radiator 2 are fixed on left end cap 51 and right end cap 52, and make light source
The distance between starting point 10 of center and reflective surface is maintained between 20mm≤k≤30mm, the exiting surface of LED light bar 1 with
Reflective surface 9 is staggered relatively, it is ensured that more preferable color developing, avoids directly being emitted light stimulus human eye, dramatically drops
Low dazzle, lamp body 3 carry out anodized, rationally control the reflectivity of reflective surface, can also further reduce by reflecting
Secondary dazzle caused by light, the LED light bar 1 of biasing and the reflective surface 9 of lamp body 3 are engaged, and can also generate asymmetric light distribution
Distribution, realizes the skew of light distribution so that light is more distributed in the latter half of blackboard or wall, improves light profit
With rate, it is further ensured that blackboard or wall have the vertical illumination of the more preferable uniformity.
According to a particular embodiment of the invention, the general colour rendering index Ra of LED light source is more than 90, in special colour rendering index
R9 is more than 80.
Control circuit 4 is arranged in the cavity between end cap 5 and trim 6, then by transparent printing opacity made of PC
Cover 7 is connected to lamp body 3 and end cap 5.
According to a particular embodiment of the invention, included in control circuit and remove ripple（Without stroboscopic）Application-specific integrated circuit, reduce stroboscopic pair
Negatively affected caused by student eyesight health and mental health.
According to Fig. 3, it is contemplated that the distance from bottom of the blackboard or wall LED blackboard lightses are farthest, and the light of distribution is less,
The light of reinforcement bottom can make light distribution overall on blackboard or wall to be illuminated more uniform.In the present invention, it is overall
Optical plan realizes the asymmetric polarisation distribution of 0-180 ° of plane using indirect type reflective mechanism, and more light are projected
Apart from farther blackboard bottom, reach blackboard top and the bottom illumination approximation unanimously, and the luminous intensity distribution of 90 ° of -270 ° of planes is more than 130 °,
Ensure that two blackboard lights middles do not have obvious shadow, while again part high angle scattered light can be avoided to project blackboard or wall
Body causes energy waste with exterior domain, and ensures to realize blackboard illumination uniformity >=0.8.
According to Fig. 4, lamp support 8 connects the outside of lamp body 3 and ceiling, first imports the light source file of blackboard lights
Dialux illumination simulation softward carry out sunykatuib analysis, and according to sunykatuib analysis result determine the distance between blackboard lights and blackboard with
And the setting height(from bottom) of blackboard lights.Preferably, whole blackboard region can be ensured well using two blackboard lights linear arrays
Illumination requirement.For the blackboard of stock size, the distance between blackboard lights and blackboard can be controlled between 0.75-1 rice, peace
Dress height control exiting surface on blackboard along 0.4-0.7 rice or so.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
Enclose not limited to this.The equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, in the present invention
Protection domain within.Protection scope of the present invention is defined by claims.
Claims (10)
1. a kind of anti-dazzle blackboard lightses of LED, fixed by support and ceiling and parallel to blackboard, it include LED light bar, lamp body,
End cap and diffuser, it is characterised in that the diffuser is located at the underface of the lamp body, and by with the lamp body, described
The tight fit of end cap forms optics cavity, and the LED light bar is set away from blackboard, and is formed in the medial surface close to the lamp body
Reflective surface, the exiting surface of the LED light bar and the reflective surface are staggered relatively, and the light direction of the exiting surface is towards day
Card.
2. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the center of the LED light bar is to described reflective
The distance of the starting point of curved surface is 20 ~ 30mm.
3. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the LED light bar is grown including multiple along lamp body
Spend the LED light source of direction arrangement.
4. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the shady face of the LED light bar sets radiating
Body.
5. the anti-dazzle blackboard lightses of LED according to claim 4, it is characterised in that the radiator is along LED light bar length direction
It is connected with the both ends of the lamp body.
6. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the cavity between the end cap and trim
It is interior to set comprising the control circuit for removing ripple application-specific integrated circuit.
7. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the cross section curve of the reflective surface meets
Cubic curve equation y=ax3+bx2+ cx+d, x are reflector radius, and y is reflector height, wherein：20mm≤x≤80mm,
0.003≤a≤0.05, -4.25≤b≤- 0.6.65,28.5≤c≤180, -876≤d≤- 265.
8. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the material of the lamp body is aluminium alloy.
9. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the reflective surface surface is reflectivity control
Make the matte surface between 0.75 ~ 0.88.
10. the anti-dazzle blackboard lightses of LED according to claim 1, it is characterised in that the material of the diffuser is transparent PC
Or PMMA materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710857936.XA CN107620895A (en) | 2017-09-21 | 2017-09-21 | The anti-dazzle blackboard lightses of LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710857936.XA CN107620895A (en) | 2017-09-21 | 2017-09-21 | The anti-dazzle blackboard lightses of LED |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107620895A true CN107620895A (en) | 2018-01-23 |
| CN107620895A8 CN107620895A8 (en) | 2021-01-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710857936.XA Pending CN107620895A (en) | 2017-09-21 | 2017-09-21 | The anti-dazzle blackboard lightses of LED |
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| Country | Link |
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| CN (1) | CN107620895A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706797A (en) * | 2020-05-13 | 2020-09-25 | 浙江凯耀照明有限责任公司 | Light health blackboard lamp |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051118A (en) * | 2007-05-10 | 2007-10-10 | 浙江大学 | Back light board design method based on CPC array and refracting-reflecting free curved surface |
| CN202182416U (en) * | 2011-09-08 | 2012-04-04 | 赵翼 | Large-angle LED (light-emitting diode) light source reflector |
| CN202188441U (en) * | 2011-09-08 | 2012-04-11 | 赵翼 | LED (light emitting diode) light source reflector with small angle |
| CN104713033A (en) * | 2013-12-12 | 2015-06-17 | 上海润尚光电科技有限公司 | Arched surface LED lamp having cubic four-control point spline |
| CN105065978A (en) * | 2015-07-23 | 2015-11-18 | 漳州立达信光电子科技有限公司 | Reflecting type blackboard lamp |
| CN207246951U (en) * | 2017-09-21 | 2018-04-17 | 常州市元智汇电子有限公司 | The anti-dazzle blackboard lightses of LED |
-
2017
- 2017-09-21 CN CN201710857936.XA patent/CN107620895A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051118A (en) * | 2007-05-10 | 2007-10-10 | 浙江大学 | Back light board design method based on CPC array and refracting-reflecting free curved surface |
| CN202182416U (en) * | 2011-09-08 | 2012-04-04 | 赵翼 | Large-angle LED (light-emitting diode) light source reflector |
| CN202188441U (en) * | 2011-09-08 | 2012-04-11 | 赵翼 | LED (light emitting diode) light source reflector with small angle |
| CN104713033A (en) * | 2013-12-12 | 2015-06-17 | 上海润尚光电科技有限公司 | Arched surface LED lamp having cubic four-control point spline |
| CN105065978A (en) * | 2015-07-23 | 2015-11-18 | 漳州立达信光电子科技有限公司 | Reflecting type blackboard lamp |
| CN207246951U (en) * | 2017-09-21 | 2018-04-17 | 常州市元智汇电子有限公司 | The anti-dazzle blackboard lightses of LED |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706797A (en) * | 2020-05-13 | 2020-09-25 | 浙江凯耀照明有限责任公司 | Light health blackboard lamp |
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| Publication number | Publication date |
|---|---|
| CN107620895A8 (en) | 2021-01-22 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CI02 | Correction of invention patent application |
Correction item: Applicant Correct: Changzhou yuanzhihui Electronic Technology Co.,Ltd. False: CHANGZHOU YUANZHIHUI ELECTRONIC Co.,Ltd. Number: 04-01 Page: The title page Volume: 34 Correction item: Applicant Correct: Changzhou yuanzhihui Electronic Technology Co.,Ltd. False: CHANGZHOU YUANZHIHUI ELECTRONIC Co.,Ltd. Number: 04-01 Volume: 34 |
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| CI02 | Correction of invention patent application |