CN204285311U - Led street lamp lens - Google Patents
Led street lamp lens Download PDFInfo
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- CN204285311U CN204285311U CN201420722298.2U CN201420722298U CN204285311U CN 204285311 U CN204285311 U CN 204285311U CN 201420722298 U CN201420722298 U CN 201420722298U CN 204285311 U CN204285311 U CN 204285311U
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- lenticular body
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Abstract
A kind of LED street lamp lens, comprise lenticular body, be fixedly arranged on the land plateau bottom lenticular body and be located at the surface platform at lenticular body edge, described lenticular body comprises the plane of incidence and exit facet, for indent free form surface forms the plane of incidence of light source bottom lenticular body, the mating shapes of the plane of incidence and light source, slightly larger than the profile of light source; Lenticular body outside is the exit facet that the free form surface of convex is formed, and concave portion is provided with openwork part.The beneficial effects of the utility model are: the plane of incidence can absorb the light that light source sends to the full extent, exit facet design effectively can control to irradiate hot spot and be incident upon on rectangle road surface exactly, its concave portion is the design of hollow out, effectively reduces the utilization of material, can improve the efficiency of bright dipping, reduce the loss of light, improve light utilization efficiency, save the energy, reduce light pollution, make the outward appearance of lens have more characteristic, the surface platform of lens makes the air-tightness that it is assembling with lamp body higher.
Description
Technical field
The utility model relates to a kind of LED street lamp lens.
Background technology
Because LED light source volume is little, the life-span is long, power consumption is low, sturdy and durable, maintenance factor is low and the plurality of advantages such as environmental protection and energy saving, so LED street lamp was developing rapidly in recent years.
Most LED light source lighting angle is about the 120 degree distributions in lambert (Lanbertion distribution) type in the market.According to rounded hot spot on the ground, being mapped to outside road if do not do Optimizing Control System with regard to having a lot illumination, most light source cannot be made to drop on the effective lighting region of road uniformly.And most of LED luminous intensity distribution is that directly recessed or protruding light-source chamber adopts stub reflector to do part section light on market.Such light distributing system can not abundant luminous intensity distribution, makes the utilization rate of the uniformity of light difference and light low.Also has lens many employings axial symmetry luminous intensity distribution that a kind of plastic cement PC or PMMA material are made, carry out the LED street lamp that module turns arc shooting into again, this street lamp is not suitable for roadway characteristic on the horizontal luminous intensity distribution of road, light can not be made to make full use of even if light fixture does a fixed angle of altitude illumination.The illumination being particularly not suitable for multilane broad way face highway uses; And utilize that module is curved to be arranged in lamp radiator to reach road longitudinal uniformity, bring trouble to lamp radiator and end cover structure design, add light fixture cost and reduce light fixture and be applicable to the flexibility that different road lighting uses; Plastic cement PC and PMMA material lenticular again, the loss of material itself just reduces the utilization rate of light.
Summary of the invention
The purpose of this utility model is the above-mentioned defect overcome existing for prior art, provides that a kind of light extraction efficiency is high, total light transmittance is large, degree of protection is high, flexibility is strong, maintaining uniform illumination, irradiates accurately and the LED street lamp lens of the reasonable luminous intensity distribution of free from glare.
The purpose of this utility model is achieved through the following technical solutions: a kind of LED street lamp lens, comprise lenticular body, be located at the land plateau bottom lenticular body and be located at the surface platform at lenticular body edge, the bottom of described lenticular body is the plane of incidence of light source, the described plane of incidence is indent free form surface, the mating shapes of the plane of incidence and light source, slightly larger than the profile of light source; The outside of described lenticular body is the exit facet of light source, and described exit facet is the free form surface of evagination, and the feature of described free form surface is batswing tab shape along the shape of the light distribution surface of Y direction, and the shape along the light distribution surface of X-direction is water-drop-shaped.
Further, the feature of described free form surface be along Y direction the shape of light distribution surface be the batswing tab shape of center evagination, the shape along the light distribution surface of X-direction is inclined water-drop-shaped.
Further, the feature of described free form surface be along Y direction the shape of light distribution surface be symmetrical batswing tab shape, the shape along the light distribution surface of X-direction is symmetrical water-drop-shaped.
Further, described concave portion surrounding is provided with at least 2 openwork parts.
Further, the structure of described surface platform is oval ladder planar structure.
Further, the material of described lenticular body is K9 optical glass.
Operation principle of the present utility model is as follows:
Bottom lenticular body, indent surface platform presses close to the loading of LED light source light-emitting area, the plane of incidence that the light of about 120 degree that light source distributes is formed from the indent free form surface of bottom lenticular body, through the distinctive refractive index 1.51 of K9 optical glass, the exit facet that the free form surface carrying out being refracted to the convex peak shape of profile is formed, the longitudinal light velocity half angle 70 degree of road and the horizontal polarisation of road is reached after again reflecting from glass to air, the horizontal polarisation of road is the polarisation in road direction 50 degree and 30 degree, direction, roadside, form most of illumination to be mapped on effective road surface in the rectangular light spot of pavement of road of coincideing.
The beneficial effects of the utility model are: owing to being that indent free form surface forms the plane of incidence of light source bottom lenticular body, the plane of incidence of its indent is slightly larger than the profile of light source, the light that light source sends can be absorbed to the full extent, outside is the exit facet that the free form surface of convex is formed, have employed rectangular optical structural design, outgoing effectively controls irradiation hot spot and is incident upon on rectangle road surface exactly, its concave portion is the design of hollow out, effectively reduce the utilization of material, the efficiency of bright dipping can be improved, the outward appearance of lens is made to have more characteristic, and the light extraction efficiency in effective irradiation area is greater than 85%, total light transmittance is greater than 93%, nearly all light is made all to be evenly distributed on effective road surface, reduce the loss of light to the full extent, improve light utilization efficiency, save the energy, reduce light pollution, the surface platform of lens adopts oval ladder planar design, be convenient to enclose one deck cushion rubber on its surface, make the air-tightness that it is assembling with lamp body higher, (product is mainly used in highway or mine to improve the degree of protection of whole lamp, require higher to the degree of protection of lamp body, general at IP66 or IP67).K9 glass is adopted to make, can anti-aging, long service life, high-low temperature resistant, can not turn to be yellow along with the prolongation of service time, can not break because of the cold and hot change of weather.
Accompanying drawing explanation
Fig. 1 is the stereogram of embodiment 1 lens;
Fig. 2 is the upward view of embodiment 1 lens;
Fig. 3 is the front view of embodiment 1 lens;
Fig. 4 is the rearview of embodiment 1 lens;
Fig. 5 is the left view of embodiment 1 lens;
The stereogram of Fig. 6 embodiment 2 lens;
Fig. 7 is the upward view of embodiment 2 lens;
Fig. 8 is the front view of embodiment 2 lens;
Fig. 9 is the left view of embodiment 2 lens;
Figure 10 is embodiment 1 road lamp light distribution curve map;
Figure 11 is embodiment 1 road lamp light distribution curve map.
Wherein: 1 is the plane of incidence, 2 is exit facets, and 3 is land plateau, and 4 is surface platforms, and 5 is openwork parts.
Detailed description of the invention
Embodiment 1
As Figure 1-5, the utility model comprises 1, the plane of incidence, and 2, exit facet, 3, land plateau, 4, surface platform, 5, openwork part.Be the plane of incidence 1 of the light source of indent free form surface formation bottom described lenticular body 1, outside is the exit facet 2 of the light source that free form surface is formed.The design of land plateau 3 is convenient to lenticular body 1 and is sealed on lamp body.The plane of incidence 1 that the light of about 120 degree that LED light source gives out is made up of indent free form surface bottom lenticular body 1 is injected into the outside exit facet 2 formed in double hump shape free form surface and penetrates, concave portion surrounding is provided with 3 openwork parts, effectively reduce the utilization of material, the efficiency of bright dipping can be improved, the outward appearance of lens is made to have more characteristic, and the light extraction efficiency in effective irradiation area is greater than 85%, total light transmittance is greater than 93%, nearly all light is made all to be evenly distributed on effective road surface, reduce the loss of light to the full extent, improve light utilization efficiency, save the energy, reduce light pollution.
Be road lamp light distribution curve map as shown in Figure 10, figure be distributed in circumference and enclose from 0-180 to be luminous angle, to be the light intensity of luminescence to the 50-500 that circular arc distributes by circle center.The angle of the actual bright dipping of lens is the angle curve sum when half light intensity corresponding to the left and right sides, lens rising angle is at about 150 ° as shown in the figure, the light distribution surface of Y direction is not typical batswing tab shape, center evagination, the situation of blackening is had under more reducing lamp when reality uses like this, 1000 lm luminous flux largest light intensity 460 cd, about 150 ° of rising angle, the light distribution surface of X-direction is inclined water-drop-shaped luminous intensity distribution.
According to the feature of lamp stand at road trackside, to road direction polarisation half-angle 50 degree, direction, roadside polarisation half-angle 30 degree falls on effective pavement of road, so not only take full advantage of lateral light, improve the uniformity of light, and control light major part is all radiated on pavement of road, reduces the waste of road two sidelight.
Light source penetrates into the longitudinal light velocity half-angle 70 degree of road from the exit facet 2 that the free form surface of convex is formed, and light falls into pavement of road and becomes symmetrical wide luminous intensity distribution.Horizontal polarisation and longitudinal illumination are mapped to the rectangular light spot in the pavement of road that coincide on effective road surface, meet different in width road specification and the illumination of different pole height, improve the flexibility that light fixture is applicable to different road lighting use.
Embodiment 2
As different from Example 1, exit facet does not have the design of concave portion hollow out, and distribution curve flux is different, as shown in figure 11, these kind of lens are symmetric lens.Figure is distributed in circumference enclose from 0-180 be luminous angle, be the light intensity of luminescence to the 100-700 that circular arc distributes by circle center, the angle of the actual bright dipping of lens is the angle curve sum when half light intensity corresponding to the left and right sides, and as shown in figure curve, this kind of lens rising angle is at about 110 °.The light distribution surface of Y direction is batswing tab shape, and 1000 lm luminous flux largest light intensity 660 cd, about 110 ° of rising angle, the light distribution surface of X-direction is symmetric figure.
Claims (6)
1. LED street lamp lens, comprise lenticular body, be located at the land plateau bottom lenticular body and be located at the surface platform at lenticular body edge, it is characterized in that, the bottom of described lenticular body is the plane of incidence of light source, the described plane of incidence is indent free form surface, the mating shapes of the plane of incidence and light source, slightly larger than the profile of light source; The outside of described lenticular body is the exit facet of light source, and described exit facet is the free form surface of evagination, and the architectural feature of described free form surface is: the shape along the light distribution surface of Y direction is batswing tab shape, and the shape along the light distribution surface of X-direction is water-drop-shaped.
2. a kind of LED street lamp lens as claimed in claim 1, is characterized in that, the feature of described free form surface be along Y direction the shape of light distribution surface be the batswing tab shape of center evagination, the shape along the light distribution surface of X-direction is inclined water-drop-shaped.
3. a kind of LED street lamp lens as claimed in claim 1, is characterized in that, the feature of described free form surface be along Y direction the shape of light distribution surface be symmetrical batswing tab shape, the shape along the light distribution surface of X-direction is symmetrical water-drop-shaped.
4. a kind of LED street lamp lens as claimed in claim 1, is characterized in that, described concave portion surrounding is provided with at least 2 openwork parts.
5. a kind of LED street lamp lens as claimed in claim 1, is characterized in that, the structure of described surface platform is oval ladder planar structure.
6. a kind of LED street lamp lens as claimed in claim 1, is characterized in that, the material of described lenticular body is K9 optical glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420722298.2U CN204285311U (en) | 2014-11-27 | 2014-11-27 | Led street lamp lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420722298.2U CN204285311U (en) | 2014-11-27 | 2014-11-27 | Led street lamp lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204285311U true CN204285311U (en) | 2015-04-22 |
Family
ID=52868465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420722298.2U Expired - Fee Related CN204285311U (en) | 2014-11-27 | 2014-11-27 | Led street lamp lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204285311U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917363A (en) * | 2016-10-10 | 2018-04-17 | 广州达森灯光股份有限公司 | The lens and fishing lamp of fishing lamp |
-
2014
- 2014-11-27 CN CN201420722298.2U patent/CN204285311U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917363A (en) * | 2016-10-10 | 2018-04-17 | 广州达森灯光股份有限公司 | The lens and fishing lamp of fishing lamp |
| CN107917363B (en) * | 2016-10-10 | 2020-09-15 | 广州达森灯光股份有限公司 | Lens of fish gathering lamp and fish gathering lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20181127 |