CN101059211A - High brightness LED road lamp - Google Patents
High brightness LED road lamp Download PDFInfo
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- CN101059211A CN101059211A CNA2007100224341A CN200710022434A CN101059211A CN 101059211 A CN101059211 A CN 101059211A CN A2007100224341 A CNA2007100224341 A CN A2007100224341A CN 200710022434 A CN200710022434 A CN 200710022434A CN 101059211 A CN101059211 A CN 101059211A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The present invention involves a high brightness, large irradiation range and good evenness degree LED street light which can meet the use requirements of street lights. It is characterized by: the installing LED arcuate plate is the metal curved body which thickness at least is >= 10 mm, at least the inner concave is polygon cambered surface which is abutted by several plat surfaces, the width of the normal line ejection light mutual abutting configuration of said polygon cambered surface at least is the three times of light length, the LED combined light source is the LED light strip which number is same with the number of polygon cambered surfaces, and the LED combined light source is bonded flatly on the surfaces of the inner concaves. The light enlarges the irradiation area, also improves the illuminance evenness in the irradiation area, thereby meets the three big indicating requirements of irradiation area, average illuminance and illuminance evenness, and also solves the LED temperature raising problem. For example the 10 meters height, Centre vertical ground irradiance 28 lx, 15 m from the edge of the Centre the illumination of centre vertical with the ground is 28 1x, the illumination of edge away the centre 15m is 10 1x, the evenness is 0. 36, it meets the requriment of Chinese road lights light standards.
Description
Technical field
The present invention relates to a kind of is the lighting device of light source with LED, and especially about high brightness, range of exposures is big, and good evenness can satisfy the high-brightness LED street lamp of street lamp instructions for use.
Background technology
The road lighting street lamp, power wattage is bigger, and according to the light source difference, usually between 250-450W, and the time of lighting is long, generally at 8-12 hour, is high power consumption illuminating lamp in the illumination; Secondly, existing street lamp is shorter actual life with lamp source, has only 3000-5000 hour usually, and daily replacing expenditure is bigger.LED then can overcome above-mentioned shortcoming, and people fall over each other to develop the LED street lamp for this reason, to substitute the traditional lighting street lamp.
Yet the LED characteristics of luminescence, illumination angle is less usually, and mainly with the linear fashion projection source, its light source characteristic is: angle is littler when luminous, and light source will be brighter; Otherwise angle is bigger, and then luminosity is darker.Though can obtain the higher illuminating lamp light source of brightness with a plurality of LED combinations, but owing to be subjected to LED straight line projection restriction, the whole light irradiation scope that is made up is less, be used for street lamp, lamp stand center irradiation brightness is higher, and deep marginal zone is darker, is difficult to satisfy big range of exposures, the average illumination 〉=15lx of road street lamp 〉=3H, the requirement of uniformity of illuminance 〉=0.35, so can only be used for general illumination, or as uses such as red and green signals lamp, auto lamp, garden lamps.For addressing the aforementioned drawbacks, satisfy the above-mentioned lighting requirement of street lamp, prior art adopts two big class technical schemes substantially, and is a kind of for LED is arranged on the curved reflecting surface, a kind of for adding reflector.For example:
The disclosed overhead street lamp of Chinese patent CN2524072Y in a plurality of LED side's of being loaded on taper snoot, and is provided with mirror reflective plate in its side, constitutes the optically focused reflector, makes each LED bending towards contiguous minute surface, improves the reflecting condensation ability with this.
The disclosed LED street lamp of Chinese patent CN2679487Y is provided with numerous LED light pipes, serial or parallel connection composition plane or cambered surface or grid-like led light source in lamp holder, be arranged on the reflector;
The disclosed LED light projector of Chinese patent CN2743676Y will be installed the LED seat and be designed to curved surface shaped;
The disclosed LED street lamp of Chinese patent CN2842182Y, LED are laid the plate middle part and are surface plate, and periphery forms angle to the installed surface perk in the other direction of LED, makes the installed surface of LED be convex;
Chinese patent CN2874223 openly is used for the on-plane surface LED illuminating lamp of car light, adopts taper, sphere, hemispherical and paraboloidal non-plane printed circuit, gather thereon LED or led chip, and the parabolic back side is provided with fin;
The disclosed LED illuminating lamp of Chinese patent CN2819032Y, adopting reflective surface is rough reflector, and LED light is disperseed light after reflective by reflector, makes that the light astigmatism is good;
In addition, also there is the single lamp of the LED of employing that reflector is set, penetrates scope to enlarge illumination.For example:
The disclosed LED lighting device of Chinese patent CN2821381Y, adopt reflector to add convex lens, send after the direct planoconvex lens refraction of the part light that illuminator is sent, another part light that illuminator sends then is mapped on the reflector, through sending after the planoconvex lens refraction again after the reflector reflection, form directional light then;
The disclosed LED lampshade of Chinese patent CN2819044Y is made up of the diffuser of reflection shield and front side, reflectively is covered with a plurality of reflectors, and printing opacity is covered with a plurality of convex lens, the light that the LED lamp sends after the reflector reflection again the planoconvex lens refraction become many group directional lights;
The Chinese patent CN1807971 high-brightness lighting lamp of applicant's application adopts led chip reflector and reverse reflector structure in addition.Or the like
Above-mentioned all technical schemes adopt reflective mode without exception and/or LED are arranged on cambered surface, reach the expansion range of exposures with this.Though aforesaid way, enlarged the range of exposures of LED group lamp to a certain extent, but owing to do not take into full account the projection of led light source straight line, the characteristics of high directivity, make that this simple employing is reflective and/or LED is arranged on the protruding cambered surface, still be difficult to satisfy simultaneously China road street lamp, especially range of exposures, average illumination, three index requests of uniformity of illuminance.
Secondly, LED organizes another weakness of lamp and is: LED can produce big calorimetric during work, and temperature rise is big far beyond other light sources to the LED influence, if the heat that produces can not get in time distributing, the temperature rise meeting causes the LED light decay serious, and luminous efficiency plummets, serious even inefficacy.Research report is arranged, and it is too high that 70% solid-state illumination fault comes from the LED temperature, and be under half the situation of rated power in load, 20 ℃ of the every risings of temperature, and fault rate just rises one times.Reduce supply current,, value should be arranged far away but can cause the luminosity of LED not reach though can reduce caloric value.Therefore the heat radiation of LED group lamp has become another the important key factor that influences LED efficient operation and device lifetime, has also placed restrictions on its practical application as the highlight illumination street lamp thus.Though people also take all measures, the heat of the luminous generation of LED is shed, it is limited in the allowable temperature scope, make its less LED of influence operate as normal, for example:
The street lamp of the disclosed tool heat radiation function of Chinese patent CN2750186Y is arranged on the band radiating fin seat of honour with a plurality of high-capacity LEDs, and the heat energy that high-capacity LED is produced passes through the outside quick heat radiating of seat of honour radiating fin;
The disclosed high-power LED street lamp of Chinese patent CN1821651A is embedded with at least three LED lamps that are connected in the heat dissipation base concave bottom surface, corresponding outside design has bar body radiator;
Above-mentioned by setting up the radiating fin heat radiation, though the heat part that LED can be produced leaves, and reaches and reduces the temperature rise purpose, because its radiating mode that adopts, only be that the exchange of radiating fin atural beat simply is set, if but extraneous air current flow is less, obvious radiating effect then, and along with prolong service time, coverings such as exposed radiating fin can gather because of dust, birds droppings, also can reduce radiating effect, practicality is relatively poor, still is difficult to satisfy LED heat radiation requirement.
Besides, people are for pursuing high brightness, light source is made in often more employing great power LED (for example more than 1 watt) combination, the great power LED light intensity is to have increased, but the caloric value of lighting great power LED is much higher than low-power LED (for example 0.06-0.5 watt), chip power is big more, and it is many more to produce heat, has increased the heat radiation difficulty especially.
Because above-mentioned technology barrier exists, become the serious hindrance of puzzlement LED as the street lighting lamp, cause LED still to fail actual input street lighting application so far.Still having is worth improved place.
Content of the present invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, a kind of LED direct projection that directly utilizes is provided, reach and both enlarge range of exposures, significantly improve the irradiation uniformity again, can satisfy road insoluble three indexs of street lamp simultaneously, and the restriction temperature rise, really impel with the usefulness and the high-brightness LED street lamp in life-span.
The object of the invention realizes, the technical scheme of taking is: rearrange light-emitting section by some LED connection in series-parallel, adopt the good metal of heat-conductive characteristic, make inner face at least for by the semicircle of some planes adjacency or near the multiaspect arc of semicircle, thickness at least 〉=the LED fixing body of 10mm, and the normal projection light is adjoined each other reach 〉=3H (3 times of height) scope, thereby be able to satisfy simultaneously road street lamp range of exposures, average illumination, three index requests of uniformity of illuminance, and low temperature rise.Specifically, high-brightness LED street lamp of the present invention, comprise lampshade, built-in LED combined light source and installation LED arc, it is characterized in that installing the LED arc and be thickness at least 〉=10mm metal concave body, at least inner concave be by some planes in abutting connection with the polygon cambered surface of forming, each face normal of said polygon cambered surface penetrates light and adjoins each other to arrange and reach 3 times of width of lamp height at least, the LED combined light source is the LED striation identical with polygon cambered surface number of planes, and is smooth in each plane of inner concave arc surface.
The said polygon cambered surface of the present invention is installed the LED concaver, is formed by metal processing or casting mold, mainly contains two effects, and the one, make it that enough thermal capacity be arranged, can inhale the heat of the luminous generation of storage LED assembly, and by heat exchange heat radiation restriction temperature rise; The 2nd, make the LED light-emitting section that is installed on each adjacent flat, at the adjacent overlap joint of normal projection irradiation light, reach 〉=the 3H irradiating width, both enlarge range of exposures thereby reach, satisfy uniformity requirement again, reach street lamp range of exposures, average illumination, three index requests of uniformity of illuminance.According to adopting the normal projection theory that adjoins each other, the many planes of its intrados are cut apart thin more, and the irradiation uniformity is good more, by this theory, many planes are divided into to place single LED better, but the plane was cut apart tinyly like this, then can increase manufacture difficulty and cost.Definite through testing, wherein arrange three row LED with every, width is about 4cm, and cambered surface has 9-13 plane can reach the street lamp requirement substantially.The outside radiating mode of LED concaver is installed, can be divided into two kinds of basic structures, a kind ofly make the radiating fin type, dispel the heat by each fin and atmosphere formation heat exchange for recessed polygon cambered surface dorsal part; A kind of is that recessed polygon cambered surface dorsal part is made and the identical type that joins of lampshade inner face, by the heat conduction heat is passed to lampshade, forms the heat exchange heat radiation by lampshade and atmosphere again.The present invention especially preferably adopts the former, and its relatively-high temperature degree in lampshade helps forming natural air flow under windless condition, and improves radiating effect.In addition,, fin surface can also be made zigzag,, improve radiating effect to increase area of dissipation for the fin heat radiating type.
In addition, for reducing the caloric value of LED luminescence component, the present invention through test relatively, a kind of better is to adopt small-power (for example 0.06-0.5 watt) LED, not only can reduce the cost of lamp, and makes that to light caloric value low, good reliability, and many combinations do not influence brightness requirement.
High-brightness LED street lamp of the present invention, reflective, the catoptric arrangement of remarkable employing, but utilized LED direct projection characteristic, with the LED installing plate make inner face at least for by the semicircle of some planes adjacency or near the multiaspect arc of semicircle, thickness at least 〉=the LED fixing body of 10mm, and the normal projection light is adjoined each other reach 〉=the 3H width.Thick metallic object installing plate constitutes the absorber of big thermal capacity, can absorb the heat of the luminous generation of LED, constitute a heat absorption---radiator, the heat that elder generation produces LED work, be absorbed in absorber, played better buffering, and then dispel the heat by heat exchange, actual good heat dissipation effect, thus the LED temperature rise better solved; The normal projection light irradiation that adjoins each other on each plane of multiaspect arc, both enlarged shadow surface, it is darker to have solved the projection edge again, and the defective of illuminance uniformity difference makes that the illuminance uniformity in the shadow surface improves, thereby satisfy street lamp range of exposures, average illumination, uniformity of illuminance three big index requests, with 10 meters height is example, and central vertical illuminance of ground 28lx is apart from 15m edge, center illumination 10lx, the uniformity 0.36 meets the road street lighting standard-required of China fully.Besides, adopt the low-power LED compound mode, heat produces little, and the ill effect influence that fuel factor causes is littler, and performance is more stable.
Below in conjunction with three specific embodiment, further specify the principle of the invention and basic structure.
Description of drawings
Fig. 1 installs LED metal multiaspect arc body illumination projection schematic diagram for the present invention.
Fig. 2 is the first embodiment of the invention structural representation.
Fig. 3 is Fig. 2 A portion structure for amplifying schematic diagram.
Fig. 4 is the third embodiment of the invention structural representation.
The specific embodiment
Embodiment 1: referring to Fig. 1,2, illustrate to determine the polygon cambered surface 2 of metal concave body by Fig. 1, this example is a ∮ 270mm semicircle, and intrados is divided into 11, the polygon of every wide 40mm.With having good heat transfer property and low-gravity aluminium, be cast into gross thickness 28mm, wherein the polygon concaver of aluminium of fin 2.1 high 20mm.Form 1 watt with 16, by 144 lists only 0.06 watt of LED connection in series-parallel form 9 watts of illuminating module 3 of one of three row, smoothly form irradiation body in each plane of concaver.Be positioned in the curved lampshade in cross section 1, have living space 5 between the polygon concaver radiating fin of lampshade and aluminium, there are light penetrating panel 4 sealings the bottom surface, and composition power is 100 watts street lamp.Do not have light-passing board (communicating) outside the axial two ends of the polygon concaver of aluminium, leave the ventilation and heat space, constitute the heat exchange heat dissipation channel with atmosphere.Hang 10 meters highly tests, central vertical illuminance of ground 28lx, apart from 15m edge, center illumination 10lx, the uniformity 0.36 reaches 10 meters height of street lamp trunk roads, average illumination 15lx, the uniformity 0.35.
Embodiment 2: referring to Fig. 3, as embodiment 1, radiating fin 2.1 surperficial indentations 2.2 wherein are to improve radiating effect.
Embodiment 3: referring to Fig. 4, as embodiment 1, wherein polygon cambered surface metal concave body 6 is a solid, and the back side contacts with metalized lamp case 1, forms the heat exchange heat radiation.
In addition, can also dispose solar cell, make solar street light; At the lampshade shell face radiating fin is set, increases heat radiation; Further the concave inner plane is cut in segmentation; Adopt different capacity LED combination; Or the like all can, belong to protection domain of the present invention equally.
Claims (8)
1, high-brightness LED street lamp, comprise lampshade, built-in LED combined light source and installation LED arc, it is characterized in that installing the LED arc and be thickness at least 〉=10mm metal concave body, at least inner concave is in abutting connection with the polygon cambered surface of forming by some planes, each face normal ejaculation light of said polygon cambered surface adjoins each other to arrange and reaches 3 times of width of lamp height at least, and the LED combined light source is the LED striation identical with polygon cambered surface number of planes, and is smooth in each plane of inner concave arc surface.
2,, it is characterized in that metal concave body concave surface is a semicircle or near the polygon arc of semicircle according to the desirable 1 described high-brightness LED street lamp that requires.
3,, it is characterized in that intrados is made up of 9-13 adjacent plane according to the desirable 3 described high-brightness LED street lamps that require.
4,, it is characterized in that LED is 0.06-0.5 watt a low-power LED according to the desirable 1 described high-brightness LED street lamp that requires.
5, according to the desirable 4 described high-brightness LED street lamps that require, it is characterized in that the wide 4cm of LED striation, form by three row LED.
6, according to the desirable 1 described high-brightness LED street lamp that requires, it is characterized in that installing the LED metal concave body back side has radiating fin.
7,, it is characterized in that radiating fin surface indention according to the desirable 6 described high-brightness LED street lamps that require.
8,, it is characterized in that the metal concave axon do not have light-passing board and communicate with atmosphere outside two ends according to the desirable 6 or 7 described high-brightness LED street lamps that require.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100224341A CN101059211A (en) | 2007-05-11 | 2007-05-11 | High brightness LED road lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100224341A CN101059211A (en) | 2007-05-11 | 2007-05-11 | High brightness LED road lamp |
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| Publication Number | Publication Date |
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| CN101059211A true CN101059211A (en) | 2007-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100224341A Pending CN101059211A (en) | 2007-05-11 | 2007-05-11 | High brightness LED road lamp |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854148A (en) * | 2012-08-30 | 2013-01-02 | 中国农业大学 | Detection and grading system for tenderness of fresh beef based on multispectral imagery |
| CN102869920A (en) * | 2010-02-23 | 2013-01-09 | 松下电器产业株式会社 | Illumination device |
| CN106287269A (en) * | 2016-11-07 | 2017-01-04 | 贵州光浦森光电有限公司 | The SMD emitting bulb of a kind of band tubular heat slinger and application thereof |
| CN106338014A (en) * | 2016-11-07 | 2017-01-18 | 贵州光浦森光电有限公司 | Patch type luminous bulb with semi-circular heat radiation ring and application thereof |
| CN106871040A (en) * | 2017-03-10 | 2017-06-20 | 厦门佰明光电股份有限公司 | A kind of multi-purpose vehicle(MPV) signal lamp |
-
2007
- 2007-05-11 CN CNA2007100224341A patent/CN101059211A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869920A (en) * | 2010-02-23 | 2013-01-09 | 松下电器产业株式会社 | Illumination device |
| CN102854148A (en) * | 2012-08-30 | 2013-01-02 | 中国农业大学 | Detection and grading system for tenderness of fresh beef based on multispectral imagery |
| CN106287269A (en) * | 2016-11-07 | 2017-01-04 | 贵州光浦森光电有限公司 | The SMD emitting bulb of a kind of band tubular heat slinger and application thereof |
| CN106338014A (en) * | 2016-11-07 | 2017-01-18 | 贵州光浦森光电有限公司 | Patch type luminous bulb with semi-circular heat radiation ring and application thereof |
| CN106871040A (en) * | 2017-03-10 | 2017-06-20 | 厦门佰明光电股份有限公司 | A kind of multi-purpose vehicle(MPV) signal lamp |
| CN106871040B (en) * | 2017-03-10 | 2023-08-11 | 厦门佰明光电股份有限公司 | A kind of multifunctional automobile signal light |
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Effective date of registration: 20080613 Address after: Yicheng Yixing City, Jiangsu Province, stone village square, building 11, Room 403 Applicant after: Zhang Zaiping Address before: No. 69 West Lane, Jiangsu, Yixing Applicant before: Jiangsu Jiangxu Electronics Co., Ltd. |
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Open date: 20071024 |