CN107993588A - A kind of LED display to radiate before screen - Google Patents
A kind of LED display to radiate before screen Download PDFInfo
- Publication number
- CN107993588A CN107993588A CN201711499657.7A CN201711499657A CN107993588A CN 107993588 A CN107993588 A CN 107993588A CN 201711499657 A CN201711499657 A CN 201711499657A CN 107993588 A CN107993588 A CN 107993588A
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- China
- Prior art keywords
- led
- led display
- mask
- circuit board
- fresnel lenses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004020 luminiscence type Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000005034 decoration Methods 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 5
- 201000009310 astigmatism Diseases 0.000 description 4
- 101100269850 Caenorhabditis elegans mask-1 gene Proteins 0.000 description 3
- 230000003796 beauty Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004313 glare Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 241001062009 Indigofera Species 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
Abstract
The invention discloses the LED display to radiate before a kind of screen, including mask, middle water proof ring, paster LED and circuit board, bottom case and water proof ring sequentially to fasten the structure formed.The circuit board is located in bottom case, and the paster LED installation on circuit boards, is covered with Fresnel Lenses mask on the paster LED；The mask and bottom case fasten the box body structure to form sealing；The paster LED includes three kinds of luminescence chips of red, green, blue, and described three kinds of luminescence chips of red, green, blue encapsulate on circuit boards into triangle disposition shape；The mask is provided with shield plate and black sunshade leaf.The present invention radiates before carrying out LED display screen using " Fresnel Lenses ", by the way that ambient is scattered, reduction environment temperature is excessive, and internal light source increase light efficiency, improves brightness, lamp point high-power need not can also be such that display screen shows outdoors clearly, so as to improve source mass and light utilization ratio.
Description
Technical field
The present invention relates to a kind of light sources technical field, more particularly to the LED display to radiate before a kind of screen.
Background technology
Rapid advances and maturation, the use of outdoor LED display screen with the demand outdoor LED Display Technique of economic market
It is more and more ordinary, media, market, real estate, expressway screen, education, hotel, school eduaction, intelligent transportation etc. outdoors extensively
Field is applied, and still, in use over the years, many display screens can all occur that light decay is too fast, clarity is inadequate, frequent failure
Heat Deng, outdoor highlight liquid crystal display is the quality and service life immediate cause for influencing display screen.
Outdoor LED display screen, brightness are very crucial.If the brightness of outdoor LED display screen is not high, in the straight of sunlight
Lower picture is penetrated just not see.The normal brightness of outdoor LED display screen is 7000CD, only reaches the brightness outdoor LED of 7000CD
Display screen can show that clearly liquid crystal display brightness improves, the highlighted liquid crystal screen backlight power brought under irradiation by sunlight
Increase, the appearance of the thermal energy being converted into by electric energy, particularly 4K high-resolution ultra high-definitions, the printing opacity of its liquid crystal panel is relatively low, backlight
The power increase in source is very much, then backlight source power increases, and generates substantial amounts of heat.
Furthermore the surrounding environment light change of outdoor highlight liquid crystal display is greatly, liquid crystal display heat is highlighted also from the outdoor sun
The irradiation of light, according to specialty analysis：Outdoor sunlight maximum illumination intensity is 1120W/m2, is far longer than highlighted liquid crystal display fever
Amount, display screen will inherently produce certain heat when working, if environment temperature is excessive, heat dissipation is bad, and integrated circuit can
It can work abnormal, or even be burned out, so that display system can not work normally；So the key of highlighted liquid crystal display heat dissipation exists
Sunlight irradiates the heat dissipation before heat, that is, screen.
The heat dissipation of LED display is very important, and is not only the heat dissipation of screen body, the heat dissipation for also having lamp point, if lamp point
If heat dissipation effect is bad, the dead lamp of LED display lamp point can be caused, light decay is too fast.Common LED display is all peace on the market
Dress air-conditioning radiates.Although LED display installation air-conditioning can solve the problems, such as that display screen radiates, installation air-conditioning can be right
Our display screen damages, and it is uneven that installation air-conditioning can make our display screen radiate, so the light decay of our display screens
With regard to uneven, display screen can be made to seem unintelligible.More most important, the cold air and display screen that air-conditioning gives out distribute
Hot phase intersection produce water mist, water mist, which is attached to wiring board, can corrode component, chip and solder joint inside display screen module, meeting
Cause the failures such as line short, display screen blank screen.
The content of the invention
In view of this, the present invention provides the LED display to radiate before a kind of screen, and carrying out LED using " Fresnel Lenses " shows
Radiate before display screen screen, by the way that ambient is scattered, reduction environment temperature is excessive, and internal light source increase light efficiency, improves brightness, lamp
Point high-power need not can also be such that display screen shows outdoors clearly, so as to improve source mass and light utilization ratio.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
The LED display to radiate before a kind of screen of the present invention, including mask, centre water proof ring, paster LED and circuit board,
Bottom case and water proof ring sequentially fasten the structure formed.The circuit board is located in bottom case, and the paster LED is installed on circuit board
On, it is covered with Fresnel Lenses on the paster LED；The mask and bottom case fasten the box body structure to form sealing；The patch
LED includes three kinds of luminescence chips of red, green, blue, and described three kinds of luminescence chips of red, green, blue encapsulate on circuit boards into triangle disposition；
The mask is provided with shutter and black sunshade leaf.
In order to further realize the present invention, the decoration ridge of black, the luminous energy of LED are provided between the adjacent LED
Launch well, decoration ridge can utilize view effect, module is loaded beauty.
In order to further realize the present invention, the Fresnel Lenses includes a shiny surface and a serrated face.
In order to further realize the present invention, the Fresnel Lenses plane of incidence is shiny surface, and exit facet is serrated face.
In order to further realize the present invention, each serration depth of Fresnel Lenses is identical, so that increase the intensity of lens,
So that the veiling glare of lens is reduced, so as to improve source mass and light utilization ratio.
In order to further realize the present invention, each lens mask upper end is provided with shield plate, enables the LED light of open air
Water-proof sun-proof.
In order to further realize the present invention, the dot matrix longitudinal direction that the multiple lens mask is formed is provided with multiple and different
The black sunshade leaf of height, makes two adjacent masks seem more smooth using visual effect, reduces the irradiation heat because of sunlight
Amount produces excessive environment temperature.
In order to further realize the present invention, the luminescence chip is disposed on circuit board with IC chip, and circuit board is just
Face is provided with red, green, blue three-colour light-emitting chip, and the back side sets IC chip.
Beneficial effect
1. the present invention is scattered ambient, since screen surface can reflect by setting astigmatism lines on mask surface
Qiang Guang, such as runs into strong illumination, and the liquid crystal display that the backlight of screen in itself carries can mix interference to the strong light of reflection and fall, so that
It is unclear in screen, and the strong light action of diffusing reflection of astigmatism lines can scatter direct projection light, so that watching to understand
Look up the information read on liquid crystal display.
2. the present invention is used for LED light source using Fresnel Lenses, increase light efficiency is played, improves the effect of brightness.Relative to
Same lens from LED light, focal length is different, distance is different, can arbitrarily set emergent light angle, single lamp or more array LED lamps
It can design according to demand；The cutting of Fresnel Lenses ultra-thin structure, the size of super large, arbitrary shape, excellent light transmittance
Deng more than traditional convex lens advantage, its weight is less than convex lens, and a variety of occasions are applicable in.
3. red, green, blue three-colour light-emitting chip of the present invention is encapsulated in same colloid using triangle disposition shape, improve
The contrast of LED display, picture display effect is more excellent, makes that total is lighter, physical picture element resolution ratio higher, is especially suitable for
In closely watching.
4. being provided with the decoration ridge of black between the adjacent LED of the present invention, the luminous energy of LED is launched well, fills
Decorations ridge can utilize view effect, module is loaded beauty.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the present invention；
Attached drawing 2 is three-colour light-emitting chip-packaging structure schematic diagram of the present invention；
Attached drawing 3 is the structure diagram of the Fresnel Lenses of mask of the present invention；
Attached drawing 4 is mask close-up schematic view of the present invention.
Description of reference numerals
1st, mask；101st, Fresnel Lenses；102nd, shiny surface；103rd, serrated face；104th, shield plate；105th, black sunshade
Leaf；2nd, middle water proof ring；3rd, paster LED and circuit board；301st, ridge is decorated；4th, bottom case；5th, water proof ring.
Embodiment
Below in conjunction with drawings and examples, the present invention is further described：
As shown in Figure 1, the LED display to radiate before a kind of screen of the present invention, by mask 1, middle water proof ring 2, paster LED
The structure sequentially fastened with circuit board 3, bottom case 4 and water proof ring 5.The circuit board is located in bottom case 4, the paster LED
Installation on circuit boards, is covered with Fresnel Lenses 101 on the paster LED；The mask 1 and bottom case 4, which fasten, forms sealing
Box body structure；The paster LED includes three kinds of luminescence chips of red, green, blue, and described three kinds of luminescence chips of red, green, blue are into " product " word
Shape encapsulates on circuit boards.
The front of the pcb board is provided with red, green, blue three-colour light-emitting chip, and the back side sets IC, and IC has wider in technique
Arrangement space, interference between IC and IC reduces, and LED display is still to the luminescence display (light sent under being exposed to the sun in summer
Sunlight of being eager to excel is just effective), it shines can generate heat surely, and IC is provided separately with luminescence chip, can there is no what is contacted with lamp base
Can, reduce IC then can cause job insecurity because temperature near luminescence chip is excessive, or temperature drift is different and produce passage
Between between electric current or piece difference it is excessive and cause spend screen, improve the stability of product, it is straight as a result of the paster LED of non-encapsulating
Connect and be affixed on pcb board, paster LED encapsulation is substantially reduced single led occupied space, and three-colour light-emitting chip light emitting chip is into " product " word
Shape encapsulates, as shown in Figure 2, it will be apparent that and for the duty cycle of patch well below the duty cycle of prior art straight cutting shape, light-emitting area is small,
Black area area is big, improves the contrast of LED display, and picture display effect is more excellent, makes that total is lighter, physical picture element point
Resolution higher, is particularly suitable for closely watching, simultaneously as module duty cycle is big, space is enough, and module is greatly shortened
Maintenance time, as shown in figure 4, being provided with the decoration ridge 301 of black between adjacent LED, the luminous energy of LED is launched well
Go, decoration ridge can utilize view effect, module is loaded beauty.
The red light chips that size is 350-500mcd for 12mil, bare crystalline brightness, and size can be used to be in the present embodiment
The green light chip that 14mil, bare crystalline brightness are 1600-2000mcd and the indigo plant that size is 14mil, bare crystalline brightness is 400-5000mcd
Optical chip is packaged into the paster LED of traditional outdoor respectively, and accurate brightness ratio is：R：G：B=3.0：5.9: 1.1, then
Make the cell board of outdoor display screen, maximum current is that to measure cell board brightness be 6200CD or so to 20mA, lights aging
After 1000 hours, brightness actual measurement is 6001CD, and attenuation ratio is 9% or so.
As shown in figure 3, the mask 1 is provided with Fresnel Lenses 101 in the paster LED relative position, Fresnel is saturating
Mirror 101 includes a shiny surface 102 and a serrated face 103, and one serrated face 103 of lens is flat to one for continuous surface part " collapse "
On face.In terms of section, its surface is made of a series of sawtooth pattern grooves, and core is ellipse camber line.Each groove part with
Angle is different between adjacent grooves, but all concentrates light at one, forms gonglion, that is, the focus of lens.It is each recessed
Groove can regard an independent lenslet as, and light is adjusted to directional light or optically focused.And using by LED in this implementation
The light sent changes into parallel rays, and lens entrance face is shiny surface, and exit facet (face in Fig. 3 where AB) is serrated face,
Lens divide into 8 parts, and the bigger lens of the number actually split can be thinner, and focus is the light source that LED is sent, by incidence
Light angle behind face, each serration depth of lens is identical, so as to increase the intensity of lens so that and the veiling glare of lens is reduced, from
And improve source mass and light utilization ratio.
Furthermore lens surface is in rough sawtooth, and in astigmatism lines, surface astigmatism lines can scatter ambient
Without very strong reflection light can be presented in certain angle as current existing screen, while it is soft that internal light can be made to shine again
With, it is not dazzling, accomplish to be become " big smooth surface " by " small luminous point "；As shown in figure 4, each lens mask upper end is provided with shield
Plate 104, makes the LED light of open air waterproof sun-proof；It is provided with the dot matrix longitudinal direction that multiple lens masks are formed not of uniform size
Black sunshade leaf 105, two adjacent masks is seemed more smooth using visual effect, reduce the irradiation heat because of sunlight
Produce excessive environment temperature.
Can meet demand as long as thering is a face to make serrated face in incident two faces with outgoing of ordinary circumstance.It is if uncommon
Hope that the plane of incidence makes serrated face and exit facet makes plane, above-mentioned analysis is also the same.Such as outer surface can be made to be even surface
And inner surface is serrated face, this can be accumulated to avoid dust.More importantly if the side of sawtooth is not plane but
Curved surface, the result is that identical.So we just can not only make tabular Fresnel Lenses, and it is all can also to make other
Such as arc tile or the Fresnel Lenses of bowl-type.
The foregoing is merely the better embodiment of the present invention, the invention is not limited in the above embodiment, is implementing
During there may be local small structural modification, if not departing from the essence of the present invention to the various changes or modifications of the present invention
God and scope, and belong within the scope of the claim and equivalent technologies of the present invention, then the present invention is also intended to comprising these changes
And modification.
Claims (8)
1. the LED display to radiate before a kind of screen, including mask, middle water proof ring, paster LED and circuit board, bottom case and waterproof
Circle sequentially fastens the structure formed, it is characterised in that：The circuit board is located in bottom case, and the paster LED is installed on circuit board
On, it is covered with Fresnel Lenses on the paster LED；The mask and bottom case fasten the box body structure to form sealing；The patch
LED includes three kinds of luminescence chips of red, green, blue, and described three kinds of luminescence chips of red, green, blue encapsulate on circuit boards into triangle disposition；
The mask is provided with shutter and black sunshade leaf.
2. the LED display to radiate before a kind of screen according to claim 1, it is characterised in that between the adjacent LED
It is provided with the decoration ridge of black.
3. the LED display to radiate before a kind of screen according to claim 1, it is characterised in that the Fresnel Lenses bag
Include a shiny surface and a serrated face.
4. the LED display to radiate before a kind of screen according to claim 3, it is characterised in that the Fresnel Lenses
The plane of incidence is shiny surface, and exit facet is serrated face.
5. the LED display to radiate before a kind of screen according to claim 4, it is characterised in that the Fresnel Lenses is each
Serration depth is identical.
6. the LED display to radiate before a kind of screen according to claim 5, it is characterised in that each lens mask
Upper end is provided with shield plate.
7. the LED display to radiate before a kind of screen according to claim 6, it is characterised in that the multiple lens mask
The dot matrix longitudinal direction of formation is provided with the black sunshade leaf of multiple and different height.
8. the LED display to radiate before a kind of screen according to claim 1, it is characterised in that the luminescence chip and IC
Chip is disposed on circuit board, and the front of circuit board is provided with red, green, blue three-colour light-emitting chip, and the back side sets IC chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711499657.7A CN107993588A (en) | 2017-12-29 | 2017-12-29 | A kind of LED display to radiate before screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711499657.7A CN107993588A (en) | 2017-12-29 | 2017-12-29 | A kind of LED display to radiate before screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107993588A true CN107993588A (en) | 2018-05-04 |
Family
ID=62040718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711499657.7A Pending CN107993588A (en) | 2017-12-29 | 2017-12-29 | A kind of LED display to radiate before screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107993588A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742467Y (en) * | 2004-11-02 | 2005-11-23 | 哈尔滨宇宙光电子有限公司 | Electronic display screen |
| CN101345006A (en) * | 2008-08-27 | 2009-01-14 | 深圳市大眼界光电科技有限公司 | Patch type LED outdoor display screen |
| CN201274137Y (en) * | 2008-08-27 | 2009-07-15 | 深圳市大眼界光电科技有限公司 | Pasted sheet type LED outdoor display screen |
| WO2013185364A1 (en) * | 2012-06-13 | 2013-12-19 | 深圳市华星光电技术有限公司 | Area light source and display device |
| CN207690428U (en) * | 2017-12-29 | 2018-08-03 | 广州天眼电子产品有限公司 | A kind of LED display to radiate before screen |
-
2017
- 2017-12-29 CN CN201711499657.7A patent/CN107993588A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742467Y (en) * | 2004-11-02 | 2005-11-23 | 哈尔滨宇宙光电子有限公司 | Electronic display screen |
| CN101345006A (en) * | 2008-08-27 | 2009-01-14 | 深圳市大眼界光电科技有限公司 | Patch type LED outdoor display screen |
| CN201274137Y (en) * | 2008-08-27 | 2009-07-15 | 深圳市大眼界光电科技有限公司 | Pasted sheet type LED outdoor display screen |
| WO2013185364A1 (en) * | 2012-06-13 | 2013-12-19 | 深圳市华星光电技术有限公司 | Area light source and display device |
| CN207690428U (en) * | 2017-12-29 | 2018-08-03 | 广州天眼电子产品有限公司 | A kind of LED display to radiate before screen |
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