CN102980090B - Light-emitting diode (LED) street lamp - Google Patents

Light-emitting diode (LED) street lamp Download PDF

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Publication number
CN102980090B
CN102980090B CN201110264518.2A CN201110264518A CN102980090B CN 102980090 B CN102980090 B CN 102980090B CN 201110264518 A CN201110264518 A CN 201110264518A CN 102980090 B CN102980090 B CN 102980090B
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China
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silica
gel lens
chip
light
street lamp
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Expired - Fee Related
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CN201110264518.2A
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CN102980090A (en
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王元成
王丽娜
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王元成
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/72Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting

Abstract

The invention relates to the field of lighting fitting and provides a light-emitting diode (LED) street lamp. The LED street lamp comprises a chip, fluorescent powder, a support, an aluminum substrate and a silicone lens. A heat radiating unit is made from silver with the heat conductivity coefficient of 429W/mK. The light transmittance of the silicone lens is at least 95%. An inner groove is formed in the middle of the silicone lens. The chip is placed in the inner groove, and the chip, the fluorescent powder and the silicone lens are tightly attached without gaps. The silicone lens overally controls the light emitted from the chip and shinning to the transverse direction of a street. The inner groove of the silicone lens and the arc shaped side wall in front of the silicone lens control the light emitted from the chip and shining to the longitudinal direction of the street. The LED street lamp has the advantages of being novel in structure, low in production cost, high in light use ratio, not prone to producing haloes in emitted light, and good in effect of heat dissipation.

Description

A kind of LED street lamp
Technical field
The present invention relates to field of illuminating lamps, particularly relate to a kind of LED street lamp for road lighting.
Background technology
LED street lamp, compared with traditional street lamp, has the advantage that the life-span is long, light efficiency is high, color uniformity is good.The LED street lamp of current use all needs to carry out secondary light-distribution, its luminous intensity distribution of LED street lamp not carrying out secondary light-distribution normally a certain region or a direction too concentrated, the requirement of road lighting can not be reached.The light range of exposures schematic diagram that the LED street lamp of not carrying out secondary light-distribution sends as shown in Figure 1, A in figure is road, B is the range of exposures of LED street lamp, C is the corresponding position on road of LED street lamp, the light sent is light spheroidal, and some meeting light is outside road, and light is not also stretched along the longitudinal direction expansion of road direction, the light that this kind of luminous intensity distribution sends does not meet the requirement of road lighting, and the uniformity is about 0.3.LED street lamp secondary light-distribution is exactly use some lens or reflection shield to reflect the light intensity that LED sends again, to reach the requirement of road lighting, its deficiency existed is that the utilization rate of light is low, the light range of exposures schematic diagram that the LED street lamp of carrying out secondary light-distribution sends as shown in Figure 2, A in figure is road, B is the range of exposures of LED street lamp, C is the corresponding position on road of LED street lamp, luminous intensity distribution is better than luminous intensity distribution circular in Fig. 1, but owing to not limiting light at road horizontal direction, not by enforceable for light toward road while diffusion, the light sent is caused to have a large portion to be wasted, this kind of luminous intensity distribution uniformity is about 0.5.Meanwhile, all need to there is certain spacing between existing LED light source and lens or reflection shield, therefore there is the problem of mismatch error, the light that LED street lamp sends easily produces halation, causes " yellow circle " problem.In addition, the LED light source that existing LED street lamp uses is all generally that the method system of high-power chip or integration packaging is looked for, operationally can produce high temperature, the cooling requirements therefore for LED street lamp is strict especially, the problem of existing LED street lamp ubiquity radiating effect difference.
Summary of the invention
The object of the invention is to there is above-mentioned deficiency to overcome existing LED street lamp, provide a kind of novel structure, the utilization rate of light is high, and the light sent can not produce halation, the LED bulb of good heat dissipation effect.
In order to realize foregoing invention object, present invention employs following technical scheme:
A kind of LED street lamp, comprise chip, fluorescent material, support, aluminium base and silica-gel lens, chip is rack-mount, fluorescent material is coated on chip, also comprise radiating piece, support connects aluminium base by radiating piece, and described radiating piece is that the silver being 429W/mK by thermal conductivity factor is made, and support arranges thermal vias; The light transmittance of described silica-gel lens is at least 95%, and silica-gel lens middle arranges inner groovy, and chip is in inner groovy and chip, seamlessly between fluorescent material and silica-gel lens to fit tightly; Silica-gel lens is symmetrical along the longitudinal center of inner groovy, the long 7.0-8.0mm of silica-gel lens, wide 4.0-4.5mm, high 3.0-3.5mm, the sidewall in silica-gel lens front is the arc of outward opening, and camber line angle is 92-97 degree, it is the spherical crown of two symmetrical downward protrusions bottom silica-gel lens, the tie point of two spherical crowns and the center of inner groovy longitudinal direction are on same straight line, and the diameter of spherical crown is 2.1-2.5mm, and the height of spherical crown is 0.8-1.2mm; Indent flute length 2.0-2.5mm, wide 3.7-4.2mm, high 0.8-1.2mm, the sidewall in inner groovy front is the inside arc of opening, and camber line angle is 35-45 degree; The light of the directive road horizontal direction that the overall control chip of silica-gel lens sends, the light of the directive road longitudinal direction that the inner groovy of silica-gel lens and the curved wall control chip in silica-gel lens front send.
As preferably, described thermal vias is multiple, and the heat that chip operationally produces can produce cross-ventilation through support by thermal vias, and temperature can significantly reduce, and thermal vias quantity is more, and radiating effect is better.
As preferably, the long 7.6mm of described silica-gel lens, wide 4.2mm, high 3.3mm, the sidewall camber line angle in silica-gel lens front is 95 degree, and the diameter of spherical crown is 2.31mm, and the height of spherical crown is 1mm; Indent flute length 2.25mm, wide 3.9mm, high 1.04mm, the sidewall camber line angle in inner groovy front is 39 degree.The light that chip sends is through above-mentioned silica-gel lens refraction process, and light intensity laterally expands along road direction stretches, and longitudinally eccentric, road uniform Du Keda 0.71, result of use is best.
By a kind of LED street lamp of technique scheme design, there is following advantage; (1) employing thermal conductivity factor is the radiating piece that the silver of 429W/mK is made, heat-conducting effect is better, support arranges thermal vias, the temperature that chip operationally produces can produce cross-ventilation through support by thermal vias, and temperature significantly reduces, and therefore chip operationally, the temperature produced can be directly emitted, and do not need to carry out more radiating treatment to it, not only radiating rate is fast, and production cost is low; (2) have employed the silica-gel lens of above-mentioned special size structure, directly silica-gel lens is carried out to the refraction process of light, other lens or reflection shield need not be added to carry out secondary light-distribution, not only reduce production cost, and the light loss that can not produce because of secondary light-distribution, improve the utilization rate of light, and the light sent meets the requirement of road lighting completely, light intensity laterally expands along road direction stretches, and longitudinally eccentric, road uniform degree is more than 0.6; (3) chip to be in inner groovy and chip, seamlessly between fluorescent material and silica-gel lens to fit tightly, solve lens or because of secondary light-distribution lens used or the halo problem that there is distance or gap between reflection shield and chip and produce, the light sent is more even, do not have halation, also can not produce the phenomenon of " yellow circle ".In sum, a kind of LED street lamp of the present invention has novel structure, and production cost is low, and the utilization rate of light is high, and the light sent can not produce halation, the advantage of good heat dissipation effect.
Accompanying drawing explanation
Fig. 1: the light range of exposures schematic diagram that the LED street lamp of not carrying out secondary light-distribution in background technology sends.
Fig. 2: the light range of exposures schematic diagram that the LED street lamp of carrying out secondary light-distribution in background technology sends.
Fig. 3: structural representation of the present invention.
Fig. 4: the amplification plan view of silica-gel lens of the present invention.
Fig. 5: the light intensity schematic diagram of LED street lamp of the present invention.
Fig. 6: the light range of exposures schematic diagram that the LED street lamp of invention sends.
Detailed description of the invention
Be described further below in conjunction with Fig. 3, Fig. 4, Fig. 5 and Fig. 6 the present invention.
A kind of LED street lamp as shown in Figure 3 and Figure 4, comprise chip 5, radiating piece 7, fluorescent material 6, support 2, aluminium base 3 and silica-gel lens 1 to form, chip 5 is arranged on support 2, fluorescent material 6 is coated on chip 5, support 2 connects aluminium base 3 by radiating piece 7, the heat produced when chip 5 works is transmitted to aluminium base 3 by radiating piece 7, and the direct and lamp housing body contact by aluminium base 3, the heat that chip 5 is operationally produced all is dispersed in air and goes.Radiating piece 7 is that the silver being 429W/mK by thermal conductivity factor is made, support is arranged multiple thermal vias 4, the heat that chip 5 operationally produces can produce cross-ventilation by thermal vias 4 when support 2, and temperature can significantly reduce, thermal vias 4 quantity is more, and radiating effect is better.
The light transmittance of silica-gel lens 1 is at least 95%, more high better, and silica-gel lens 1 middle arranges inner groovy 12, and chip 5 is in inner groovy 12 and chip 5, seamlessly between fluorescent material 6 and silica-gel lens 1 to fit tightly.Silica-gel lens 1 is symmetrical along the longitudinal center of inner groovy 12, the long 7.0-8.0mm of silica-gel lens 1, wide 4.0-4.5mm, high 3.0-3.5mm, the arc of sidewall 13 in outward opening in silica-gel lens 1 front, camber line angle is 92-97 degree, it is the spherical crown 11 of two symmetrical downward protrusions bottom silica-gel lens 1, the tie point of two spherical crowns 11 and the center of inner groovy 12 longitudinal direction are on same straight line, and the diameter of spherical crown 11 is 2.1-2.5mm, and the height of spherical crown 11 is 0.8-1.2mm; The long 2.0-2.5mm of inner groovy 12, wide 3.7-4.2mm, high 0.8-1.2mm, the sidewall 123 in inner groovy 12 front is the inside arc of opening, and camber line angle is 35-45 degree.
The light of the directive road horizontal direction that the overall control chip 5 of silica-gel lens 1 sends, light is stretched along the expansion of road horizontal direction by silica-gel lens 1 entirety i.e. its length, width and height by the light that namely chip 5 sends.The light of the directive road longitudinal direction that the inner groovy 12 of silica-gel lens 1 and curved wall 13 control chip 5 in silica-gel lens 1 front send, namely the light that sends of chip 5 by the curved wall 13 in inner groovy 12 and silica-gel lens 1 front by enforceable for light toward road longitudinal direction while irradiate, wherein the curved wall 13 in silica-gel lens 1 front and the curved wall 123 in inner groovy 12 front are playing main effect by enforceable for light toward during the irradiating of road longitudinal direction.
Adopt the session road uniformity that the LED street lamp of the silica-gel lens 1 of said structure size range sends between 0.6-0.71, the session road uniformity wherein adopting the LED street lamp of the silica-gel lens 1 of following size to send can reach 0.71, best results, the specifically long 7.6mm of silica-gel lens 1, wide 4.2mm, high 3.3mm, the sidewall 13 camber line angle in silica-gel lens 1 front is 95 degree, the diameter of spherical crown 11 is 2.31mm, and the height of spherical crown 11 is 1mm; The long 2.25mm of inner groovy 12, wide 3.9mm, high 1.04mm, the sidewall 123 camber line angle in inner groovy 12 front is 39 degree.As shown in Figure 5, for adopting the light intensity schematic diagram of the LED street lamp of the silica-gel lens 1 of above-mentioned size.As shown in Figure 6, for adopting the light range of exposures schematic diagram sent of the LED street lamp of the silica-gel lens 1 of above-mentioned size, A in figure is road, B is the range of exposures of LED street lamp, and C is the corresponding position on road of LED street lamp, and the luminous energy that LED street lamp sends directly applies to road lighting requirement, and do not need to carry out secondary light-distribution, the light light distribution sent presents laterally to expand along road and to stretch and both sides are symmetrical, and longitudinally eccentric is bat wing, and especially the middle brightness of light intensity is the highest.

Claims (3)

1. a LED street lamp, comprise chip, fluorescent material, support, aluminium base and silica-gel lens, chip is rack-mount, fluorescent material is coated on chip, characterized by further comprising radiating piece, support connects aluminium base by radiating piece, and described radiating piece is that the silver being 429W/mK by thermal conductivity factor is made, and support arranges thermal vias; The light transmittance of described silica-gel lens is at least 95%, and silica-gel lens middle arranges inner groovy, and chip is in inner groovy and chip, seamlessly between fluorescent material and silica-gel lens to fit tightly; Silica-gel lens is symmetrical along the longitudinal center of inner groovy, the long 7.0-8.0mm of silica-gel lens, wide 4.0-4.5mm, high 3.0-3.5mm, along direction of beam propagation, the sidewall in silica-gel lens front is the arc of outward opening, camber line angle is 92-97 degree, is the spherical crown of two symmetrical downward protrusions bottom silica-gel lens, and the tie point of two spherical crowns and the center of inner groovy longitudinal direction are on same straight line, the diameter of spherical crown is 2.1-2.5mm, and the height of spherical crown is 0.8-1.2mm; Indent flute length 2.0-2.5mm, wide 3.7-4.2mm, high 0.8-1.2mm, the sidewall in inner groovy front is the inside arc of opening, and camber line angle is 35-45 degree; The light of the directive road horizontal direction that the overall control chip of silica-gel lens sends, the light of the directive road longitudinal direction that the inner groovy of silica-gel lens and the curved wall control chip in silica-gel lens front send.
2. a kind of LED street lamp according to claim 1, is characterized in that described thermal vias is multiple.
3. a kind of LED street lamp according to claim 1 and 2, is characterized in that the long 7.6mm of described silica-gel lens, wide 4.2mm, high 3.3mm, and the sidewall camber line angle in silica-gel lens front is 95 degree, and the diameter of spherical crown is 2.31mm, and the height of spherical crown is 1mm; Indent flute length 2.25mm, wide 3.9mm, high 1.04mm, the sidewall camber line angle in inner groovy front is 39 degree.
CN201110264518.2A 2011-09-07 2011-09-07 Light-emitting diode (LED) street lamp Expired - Fee Related CN102980090B (en)

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CN104033842B (en) * 2014-06-30 2017-12-15 长城汽车股份有限公司 Lens of car light component and there is its automobile
CN104953017B (en) * 2015-05-05 2018-05-22 广州普希思智能科技有限公司 Integral LED encapsulation piece and production technology are reinforced based on dusting band secondary light-distribution is inverted
CN105257994A (en) * 2015-11-16 2016-01-20 江西华柏节能照明科技协同创新有限公司 Method for improving luminous efficacy of optical engine
CN106850885B (en) * 2017-01-18 2018-11-30 维沃移动通信有限公司 A kind of flash lamp design and mobile terminal
CN108591854A (en) * 2018-06-14 2018-09-28 李鹤荣 A kind of light-source structure that light extraction is wide

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CN101604688A (en) * 2009-06-30 2009-12-16 王海军 A kind of high-power LED oscillation package structure
CN201527988U (en) * 2009-02-13 2010-07-14 广东昭信光电科技有限公司 Encapsulation structure applied on a guide type light-emitting diode device
CN101900266A (en) * 2009-05-19 2010-12-01 厦门华联电子有限公司 LED and LED street lamp

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