CN103486540A - LED (light-emitting diode) reflector - Google Patents
LED (light-emitting diode) reflector Download PDFInfo
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- CN103486540A CN103486540A CN201310395934.5A CN201310395934A CN103486540A CN 103486540 A CN103486540 A CN 103486540A CN 201310395934 A CN201310395934 A CN 201310395934A CN 103486540 A CN103486540 A CN 103486540A
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Abstract
The invention discloses an LED (light-emitting diode) reflector, which can be used for distributing light rays emitted by an LED single lamp. When the reflector is used for illuminating at a cross road, and the range of a mounting elevation angle (and a horizontal contained angle) is 15-90 degrees, a center joining area cannot form a hot spot, and a dark area cannot be formed below a lamp pole, so that the whole area is uniformly illuminated.
Description
Technical field
The present invention relates to the LED lighting technical field, relate in particular to a kind of LED reflector.
Background technology
Out of doors in the flood lighting scene, a kind of common scene is the illumination of crossroad, arranges lamp stand at the parting of the ways four jiaos, and several Projecting Lamps are installed on lamp stand, illuminate the zone, crossroad, comprise crossroad central traffic intersectional region and vehicle stop, treat row zone; There is greenbelt the part crossroad, and greenbelt generally is positioned at four jiaos of crossroads, i.e. lamp stand below and rear area, and lamp stand below in this case and part zone, rear also need that certain illumination is arranged.Due to the restriction that is subject to lamp stand pattern, mounting bracket form and practice of construction, in the High-Pole Lamp of crossroad, the installation elevation angle of lamp holder (with horizontal sextant angle) is often larger, as 45 degree or more than 45 degree, even reaches 75 degree or 90 degree; In the case, if the lamp distribution form is unreasonable, can cause very low illumination uniformity or very poor visual effect.
The C-planar system is a kind of measurement commonly used the coordinate system of description light source or the distribution of light fixture spatial light intensity, and this system can be used in the luminosity measurement of LED light source or light fixture.The spatial light intensity of measuring and describe LED light source or light fixture under the C-planar system distributes, and light distribution is generally described by distribution curve flux; Distribution curve flux is under polar coordinate system or rectangular coordinate system, the corresponding light intensity value of all angles on certain the luminous intensity distribution plane marked, and depict the curve that light intensity value changes with angle; What people generally paid close attention to and analyzed is the distribution curve flux on C0-C180 and these two luminous intensity distribution planes of C90-C270; From distribution curve flux figure, the distribution curve flux on these two planes can overlap, and can be also diverse; The angle on the right side that the angle that we define the left side of 0 degree angle line in distribution curve flux figure is positive-angle (meaning with "+"), 0 degree angle line is negative angle (meaning with "-"), distribution curve flux on each plane can be symmetrical expression (with respect to 0 degree angle line left-right symmetry) so, can be also (asymmetric with respect to 0 degree angle line left and right) of asymmetric.Value that can the reading optical beam angle from distribution curve flux, the beam angle that we define distribution curve flux on certain luminous intensity distribution plane is: the angle value that the angle value turned over when on beam angle=distribution curve flux, the largest light intensity angle line is rotated counterclockwise the angle line to 50% largest light intensity+largest light intensity angle line dextrorotation turns over while going to the angle line of 50% largest light intensity.In order to express easily, we define rear one side of lamp stand in the corresponding actual illumination application of one side of negative angle in the distribution curve flux of C90-270 plane, the place ahead one side of lamp stand in the corresponding actual illumination application of positive-angle one side in the distribution curve flux of C90-270 plane, the vertical below of lamp stand in the corresponding actual illumination application of the degree of 0 in the distribution curve flux of C90-270 plane angle line; In addition, we will be called the C0-C180 cross section with the face of C0-C180 luminous intensity distribution planes overlapping in the LED light source structure, be called the C90-C270 cross section with the face of C90-C270 luminous intensity distribution planes overlapping, C0-C180 cross section and C90-270 cross section, as the cutaway view plane of LED light source structure, generate respectively C0-C180 cutaway view and C90-270 cutaway view.
LED light source for outdoor flood lighting of the prior art, a kind of LED light source proposed as Chinese patent application 201210584482.0, comprise the mono-lamp of LED, reflector, the side wall ring of reflector is located at the surrounding of the mono-lamp of LED, its distribution curve flux is: the distribution curve flux on C0-C180 luminous intensity distribution plane is symmetric form, and beam angle is about 100 °; Distribution curve flux on C90-270 luminous intensity distribution plane is asymmetric, and beam angle is 30 °, and the largest light intensity on C90-270 luminous intensity distribution plane is worth corresponding angle and is+28 °.Based on this luminous intensity distribution form, due to the largest light intensity on C90-270 luminous intensity distribution plane in positive-angle one side, and because beam angle is less, the obvious in the vertical direction of light is assembled and lamp stand the place ahead one side is arrived in cover, for outdoor flood lighting the time, its applicable installation elevation angle (with horizontal sextant angle) is 0 degree to 35 degree, and is applicable to illumination remote, large area region, as the flood lighting in zone, harbour.When throwing light on for crossroad, the problem of its existence is: first, at the light source elevation angle, (with horizontal sextant angle) hour, below 30 degree, due to light at the parting of the ways middle section collect, obvious speck appears in central authorities' traffic intersectional region, and brightness value obviously is greater than the lamp stand lower zone, and larger luminance contrast can cause bad visual effect; The second, when at the light source elevation angle, (with horizontal sextant angle) is larger, as 45 degree, light can't shine the zone, crossroad greatly, causes the waste of light, and brightness value is lower, and illumination uniformity is inadequate simultaneously; The 3rd, when at the light source elevation angle, (with horizon elevation angle) is larger, more than 60 degree, when more light wastes are arranged, the lamp stand below obvious dark space occurs and loses landscape effect.
Summary of the invention
For solving the prior art problem, the invention provides a kind of LED reflector, the light that the mono-lamp of LED is sent carries out luminous intensity distribution again, during for the crossroad illumination, it is 15 degree to 90 degree that the elevation angle (with horizontal sextant angle) scope is installed, central authorities' confluence not there will be speck, and the lamp stand below not there will be dark space, and whole area illumination is even.
For achieving the above object, the present invention adopts following technical scheme:
A kind of LED reflector, reflector is positioned at a side in C0-180 cross section, and is continuous in this territory, lateral areas subsurface illuminator structure; The C0-180 cross-sectional view profile of reflector inner surface is almost fan, and the C90-270 cutaway view profile of reflector inner surface is that the side direction side height corresponding thereto by the C90-270 cross section reduces gradually.
Further, the C0-180 cutaway view profile of described reflector inner surface is medianly zygomorphic, and the profile height is reduced to both sides gradually by centre.
Further, the C90-270 cross-sectional view profile of reflector inner surface is reduced gradually by C270 mono-side direction C90 mono-side height, or is reduced gradually by C90 mono-side direction C270 mono-side height.
The light part that the mono-lamp of LED sends is by the reflector internal surface reflection, and light is concentrated to C90 mono-side generally.
A kind of LED reflector module, comprise a plurality of above-mentioned LED reflectors, and described a plurality of LED reflectors form LED reflector array.
Further, described a plurality of LED reflector forms integral structure by the structural connection of bottom.
Compared with prior art, technique scheme has the following advantages:
LED reflector and the beam angle approximately mono-lamps of LED of 120 degree coordinate, and the luminous intensity distribution form obtained is: the C0-180 plane curve is for being similar to taper, and beam angle approximately 100 is spent; The C90-270 plane curve is asymmetric, and beam angle is 90 degree approximately, and the largest light intensity angle is in negative angle one side, largest light intensity angle approximately-10 degree.
Above-mentioned luminous intensity distribution form is applicable to crossroad illumination, when the elevation angle (with horizontal sextant angle) being installed hour, as 15 degree to 60 degree, higher uniformity of illuminance (being greater than 0.5) is arranged; When the installation elevation angle (with horizontal sextant angle) is larger, as be greater than 60 degree, the lamp stand below not there will be dark space.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the LED reflector cooperated with LED list lamp that Fig. 1 provides for the embodiment of the present invention;
The top view of the LED reflector cooperated with LED list lamp that Fig. 2 provides for the embodiment of the present invention;
The C0-180 cutaway view of the reflector that Fig. 3 provides for the embodiment of the present invention;
The C90-270 cutaway view of the reflector that Fig. 4 provides for the embodiment of the present invention;
The light schematic diagram of the LED reflector that Fig. 5 provides for the embodiment of the present invention;
The structural representation of the LED reflector module cooperated with LED list lamp that Fig. 6 provides for the embodiment of the present invention;
It is 15 key diagrams while spending that the elevation angle is installed in the illumination of the LED reflector module that Fig. 7 (1) provides for the embodiment of the present invention;
It is 45 key diagrams while spending that the elevation angle is installed in the illumination of the LED reflector module that Fig. 7 (2) provides for the embodiment of the present invention;
It is 75 key diagrams while spending that the elevation angle is installed in the illumination of the LED reflector module that Fig. 7 (3) provides for the embodiment of the present invention;
It is 90 key diagrams while spending that the elevation angle is installed in the illumination of the LED reflector module that Fig. 7 (4) provides for the embodiment of the present invention;
The structural representation that Fig. 8 (1) is a kind of LED light source in prior art;
The top view that Fig. 8 (2) is a kind of LED light source in prior art;
The C90-270 cutaway view that Fig. 8 (3) is a kind of LED light source in prior art;
It is 0 key diagram while spending that the elevation angle is installed in the illumination that Fig. 9 (1) is a kind of LED light source in prior art;
It is 25 key diagrams while spending that the elevation angle is installed in the illumination that Fig. 9 (2) is a kind of LED light source in prior art;
It is 35 key diagrams while spending that the elevation angle is installed in the illumination that Fig. 9 (3) is a kind of LED light source in prior art;
The distribution curve flux figure of the mono-lamp of LED that Figure 10 (1)-(3) provide for the embodiment of the present invention;
The distribution curve flux figure of the LED reflector cooperated with LED list lamp that Figure 11 provides for the embodiment of the present invention;
The distribution curve flux figure that Figure 12 is a kind of LED light source in prior art;
There is shown: the mono-lamp of 1-LED, 2-LED reflector, 3-reflector inner surface, 4-LED reflector module, 5-structural connection.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
A lot of details have been set forth in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here and implement, those skilled in the art can be in the situation that do similar popularization without prejudice to intension of the present invention, so the present invention is not subject to the restriction of following public specific embodiment.
Secondly, the present invention is described in detail in conjunction with schematic diagram, and when the embodiment of the present invention is described in detail in detail, for ease of explanation, device architecture figure can disobey general ratio and make local convergent-divergent, and described schematic diagram is example, and it should not limit the scope of protection of the invention at this.The three-dimensional space that in actual fabrication, should comprise in addition, length, width and height.
With reference to figure 1, Fig. 2, Fig. 3, Fig. 4, the structural representation of the LED reflector cooperated with LED list lamp that Fig. 1 provides for the embodiment of the present invention, the top view of the LED reflector cooperated with LED list lamp that Fig. 2 provides for the embodiment of the present invention, the C0-180 cutaway view of the reflector that Fig. 3 provides for the embodiment of the present invention, the C90-270 cutaway view of the reflector that Fig. 4 provides for the embodiment of the present invention; As can be seen from the figure, LED reflector 2 structures that the embodiment of the present invention provides are in the C0-180 angular regions, and are continuous in C0-180 zone subsurface illuminator 2 structures; The C0-180 cutaway view profile of reflector 2 inner surfaces 3 is almost fan, and the C90-270 cutaway view profile of reflector 2 inner surfaces 3 is reduced gradually by C270 mono-side direction C90 mono-side height.
With reference to figure 5, the light schematic diagram of the LED reflector that Fig. 5 provides for the embodiment of the present invention; As can be seen from the figure, the light part that the mono-lamp 1 of LED sends is by inner surface 3 reflections of reflector 2, and the exit direction of reflection ray changes, and incides LED light source top and opposite side zone, and light is concentrated to C90 mono-side generally.
With reference to figure 6, the structural representation of the LED reflector module cooperated with LED list lamp that Fig. 6 provides for the embodiment of the present invention; As can be seen from the figure, LED reflector module 4 is comprised of a plurality of described LED reflectors 2, and a plurality of LED reflectors 2 form integral structure by the structural connection 5 of bottom.
With reference to figure 7(1)-(4), elevation angle key diagram is installed for the illumination of the LED reflector module that the embodiment of the present invention provides in Fig. 7 (1)-(4); From figure, find out (1)-(4), when throwing light on, the installation elevation angle of LED reflector module 4 (with horizontal sextant angle) is 15 degree to 90 degree; The situation that the elevation angle is 15 degree is installed in the illumination that is depicted as LED reflector module as Fig. 7 (1), the situation that the elevation angle is 45 degree is installed in the illumination that is depicted as LED reflector module as Fig. 7 (2), the situation that the elevation angle is 75 degree is installed in the illumination that is depicted as LED reflector module as Fig. 7 (3), and the situation that the elevation angle is 90 degree is installed in the illumination that is depicted as LED reflector module as Fig. 7 (4); This is that the luminous intensity distribution form of the LED reflector that provides due to the embodiment of the present invention is light deflection C90-270 negative angle one side to a certain degree, has in practice enough light to irradiate to lamp stand rear one side; Even the installation elevation angle of LED light source is large (as being greater than 60 degree), still have enough light to irradiate the lamp stand lower zone, lamp stand below, without obvious dark space, guarantees the illumination sight effect of lamp stand below, and does not have that a lot of light exceeds the field of illumination scope or according to aerial and cause the light waste.
With reference to figure 8(1)-(3), Fig. 2, the structural representation that Fig. 8 (1) is a kind of LED light source in prior art, the top view that Fig. 8 (2) is a kind of LED light source in prior art, the C90-270 cutaway view that Fig. 8 (3) is a kind of LED light source in prior art, the top view of the LED light source that Fig. 2 provides for the embodiment of the present invention; As can be seen from Figure 8, a kind of LED light source that prior art (with reference to Chinese patent application 201210584482.0) proposes comprises the mono-lamp 1 of LED, reflector 2, and the side wall ring of reflector 2 is located at the surrounding of the mono-lamp 1 of LED; As can be seen from Figure 2, the sidewall of the LED reflector 2 that the embodiment of the present invention provides is non-closures, not around mono-lamp 1 surrounding of LED, and only in the C0-180 angular regions, has continuous reflector structure.
With reference to figure 9(1)-(3), elevation angle key diagram is installed in the illumination that Fig. 9 (1)-(3) are a kind of LED light source in prior art; The installation elevation angle (with horizontal sextant angle) when a kind of LED light source that as can be seen from the figure, prior art proposes is used for throwing light on is 0 degree to 35 degree; As Fig. 9 (1) is depicted as the situation that the installation elevation angle of LED light source is 0 degree, as Fig. 9 (2) is depicted as the situation that the installation elevation angle of LED light source is 25 degree, as Fig. 9 (3) is depicted as the situation that the installation elevation angle of LED light source is 35 degree; This is that the luminous intensity distribution form of a kind of LED light source of proposing due to prior art is at vertical direction beam angle very little (approximately 30 degree), and light concentrates to C90-270 positive-angle one side, and light can be concentrated and irradiates to lamp stand the place ahead one side in practice; If the installation elevation angle of LED light source excessive (more than 45 degree), have so much light will exceed the field of illumination scope or, according to in the air, cause light obviously to waste.
With reference to Figure 10,11, the distribution curve flux figure of the mono-lamp of LED that Figure 10 (1)-(3) provide for the embodiment of the present invention, the distribution curve flux figure of the LED reflector cooperated with LED list lamp that Figure 11 provides for the embodiment of the present invention; As can be seen from Figure 10, the luminous intensity distribution form of the mono-lamp 1 of LED is the approximately luminous intensity distribution of 120 degree of beam angle; From Figure 11, to find out, the distribution curve flux of the LED reflector cooperated with LED list lamp that the embodiment of the present invention provides is: the C0-180 plane curve is approximate taper, and beam angle is 100 degree approximately; The C90-270 plane curve is asymmetric, and beam angle is 90 degree approximately, and the largest light intensity angle is in negative angle one side, largest light intensity angle approximately-10 degree.Based on this luminous intensity distribution form, while throwing light on for crossroad, lamp stand below and rear area have enough light to be thrown light on, and when the elevation angle (with horizontal sextant angle) being installed hour, as 15 degree to 60 degree, higher uniformity of illuminance (being greater than 0.5) are arranged; When the installation elevation angle (with horizontal sextant angle) is larger, as be greater than 60 degree, the lamp stand below not there will be dark space.The evaluation region of uniformity of illuminance described herein is the crossroad overall region, comprise crossroad central traffic intersectional region and vehicle stop, treat row zone and a part of greenbelt zone at lamp stand rear; The ratio that described uniformity of illuminance is minimal illumination and average illumination.
With reference to Figure 12, the distribution curve flux figure that Figure 12 is a kind of LED light source in prior art; Distribution curve flux as shown in figure 12, with reference to Chinese patent application 201210584482.0, its form is: the distribution curve flux on the C0-C180 plane is symmetric form, beam angle is about 100 °; Distribution curve flux on the C90-270 plane is asymmetric, and beam angle is 30 °, and the largest light intensity on the C90-270 plane is worth corresponding angle and is+28 °; Based on this luminous intensity distribution form, due to the largest light intensity on C90-270 luminous intensity distribution plane in positive-angle one side, and because beam angle is less, the obvious in the vertical direction of light assemble and cover to lamp stand the place ahead one side; When throwing light on for crossroad, the problem of its existence is: first, at the light source elevation angle, (with horizontal sextant angle) hour, below 30 degree, due to light at the parting of the ways middle section collect, obvious speck appears in central authorities' traffic intersectional region, and brightness value obviously is greater than the lamp stand lower zone, and larger luminance contrast can cause bad visual effect; The second, when at the light source elevation angle, (with horizontal sextant angle) is larger, as 45 degree, light can't shine the zone, crossroad greatly, causes the waste of light, and brightness value is lower, and illumination uniformity is inadequate simultaneously; The 3rd, when at the light source elevation angle, (with horizon elevation angle) is larger, more than 60 degree, when more light wastes are arranged, the lamp stand below obvious dark space occurs and loses landscape effect.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.Multiple modification to these embodiment will be apparent for those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, realization in other embodiments.Therefore, the present invention will can not be restricted to embodiment illustrated herein, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a LED reflector, reflector is positioned at a side in C0-180 cross section, and is continuous in this territory, lateral areas subsurface illuminator structure; The C0-180 cross-sectional view profile of reflector inner surface is almost fan, and the C90-270 cross-sectional view profile of reflector inner surface is reduced gradually by a side direction side height corresponding thereto in C90-270 cross section.
2. LED reflector according to claim 1, is characterized in that, the C0-180 cross-sectional view profile of described reflector inner surface is symmetrical, and the profile height is reduced to both sides gradually by centre.
3. LED reflector according to claim 1, is characterized in that, the C90-270 cross-sectional view profile of described reflector inner surface is reduced gradually by C270 mono-side direction C90 mono-side height.
4. LED reflector according to claim 1, is characterized in that, the C90-270 cross-sectional view profile of described reflector inner surface is reduced gradually by C90 mono-side direction C270 mono-side height.
5. a LED reflector module, comprise a plurality of LED reflectors claimed in claim 1, and described a plurality of LED reflectors form LED reflector array.
6. LED reflector module according to claim 5, is characterized in that, described a plurality of LED reflectors form integral structure by the structural connection of bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310395934.5A CN103486540B (en) | 2013-09-03 | 2013-09-03 | LED (light-emitting diode) reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310395934.5A CN103486540B (en) | 2013-09-03 | 2013-09-03 | LED (light-emitting diode) reflector |
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| Publication Number | Publication Date |
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| CN103486540A true CN103486540A (en) | 2014-01-01 |
| CN103486540B CN103486540B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310395934.5A Expired - Fee Related CN103486540B (en) | 2013-09-03 | 2013-09-03 | LED (light-emitting diode) reflector |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB536771A (en) * | 1938-11-26 | 1941-05-27 | British Thomson Houston Co Ltd | Improvements in and relating to lanterns |
| CN202546305U (en) * | 2011-10-21 | 2012-11-21 | 宁波市鄞州赛艾富光电科技有限公司 | LED lamp tower |
| CN103050605A (en) * | 2012-12-30 | 2013-04-17 | 中微光电子(潍坊)有限公司 | LED (light emitting diode) light source module and LED light source thereof |
-
2013
- 2013-09-03 CN CN201310395934.5A patent/CN103486540B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB536771A (en) * | 1938-11-26 | 1941-05-27 | British Thomson Houston Co Ltd | Improvements in and relating to lanterns |
| CN202546305U (en) * | 2011-10-21 | 2012-11-21 | 宁波市鄞州赛艾富光电科技有限公司 | LED lamp tower |
| CN103050605A (en) * | 2012-12-30 | 2013-04-17 | 中微光电子(潍坊)有限公司 | LED (light emitting diode) light source module and LED light source thereof |
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| CN103486540B (en) | 2015-05-20 |
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