CN110388597A - A kind of light distribution device and lighting system for tunnel illumination - Google Patents
A kind of light distribution device and lighting system for tunnel illumination Download PDFInfo
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- CN110388597A CN110388597A CN201910667661.2A CN201910667661A CN110388597A CN 110388597 A CN110388597 A CN 110388597A CN 201910667661 A CN201910667661 A CN 201910667661A CN 110388597 A CN110388597 A CN 110388597A
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- light distribution
- light
- distribution device
- reflector
- tunnel illumination
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- 238000005286 illumination Methods 0.000 title claims abstract description 43
- 230000011514 reflex Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/101—Outdoor lighting of tunnels or the like, e.g. under bridges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a kind of light distribution devices and lighting system for tunnel illumination, wherein light distribution device includes reflector and translucent cover, the translucent cover includes incidence surface and light-emitting surface, the bottom of the reflector is arranged on incidence surface, the top of the reflector is equipped with the groove for placing LED light source, the reflector is used to reflex to the light of LED light source incidence surface, and the translucent cover is for the light for exposing to incidence surface to be scattered.The present invention first uses reflector to carry out second of light distribution to the light of LED light source, promote the comfort level of illumination, third time light distribution is carried out to the light for exposing to incidence surface by translucent cover again, to improve the precision of light distribution, it solves the problems, such as to cause comfort level low using lens light distribution and cause light distribution not accurate only with reflector light distribution, the comfort level and light distribution precision for improving tunnel illumination, can be widely applied to lighting technical field.
Description
Technical field
The present invention relates to lighting technical field more particularly to a kind of light distribution devices and lighting system for tunnel illumination.
Background technique
With the fast development that national highway is built, the demand of tunnel illumination is growing day by day, to the comfort of tunnel illumination
It is required that higher and higher.LED tunnel illumination substitutes traditional fluorescent lamp, sodium lamp lighting, greatly reduces the energy consumption of tunnel illumination, existing
In some technologies, it is common to use optical lens or reflector carry out light distribution to LED tunnel illumination, although can using optical lens
To realize, accurately light distribution is designed, but in the comfort for reducing tunnel illumination to a certain degree, easily formation visual fatigue；And make
Illumination comfort can be promoted by carrying out light distribution to LED tunnel illumination with reflector, but be difficult to the accurate light distribution of big spacing.
Summary of the invention
In order to solve the above-mentioned technical problem, the object of the present invention is to provide one kind to be used for tunnel illumination, and can precisely match
Light and the light distribution device and lighting system for promoting illumination comfort.
The technical scheme adopted by the invention is that:
A kind of light distribution device for tunnel illumination, including reflector and translucent cover, the translucent cover include incidence surface and
The bottom of light-emitting surface, the reflector is arranged on incidence surface, and the top of the reflector is equipped with the ditch for placing LED light source
Slot, the reflector are used to reflex to the light of LED light source incidence surface, and the translucent cover is used to expose to the light of incidence surface
Line is scattered.
Further, the reflector is in arched door shape.
Further, the incidence surface is wave curved surface, and the light-emitting surface is plane.
Further, on C0 ° of-C180 ° of cross sections of light distribution device, the reflector is inverted u-shaped, the incidence surface and go out
Smooth surface is straight line.
Further, on C0 ° of-C180 ° of cross sections of light distribution device, the shooting angle of the reflector is 60 ° -100 °.
Further, on C90 ° of-C270 ° of cross sections of light distribution device, the reflector is in rectangle, and the incidence surface is in wave
Unrestrained line, the light-emitting surface are straight line.
Further, on C90 ° of-C270 ° of cross sections of light distribution device, the wave of the incidence surface is by multiple indents
Camber line connection composition.
Further, on C90 ° of-C270 ° of cross sections of light distribution device, the shooting angle of the light-emitting surface is 110-150 °.
Further, the curved path of the camber line meets the first formula, first formula are as follows:
Y1=-7E-05x4+0.003x3-0.0329x2-0.0058x+1.0449
Wherein Y1 represents ordinate, and the value range of abscissa is 0 < X < 10.
It is of the present invention another solution is that
A kind of lighting system, including LED light source and light distribution device, the light distribution device are used for tunnel using above-mentioned one kind
The light distribution device of illumination.
The beneficial effects of the present invention are: the present invention first uses reflector to carry out second of light distribution to the light of LED light source, mention
The comfort level of illumination is risen, then third time light distribution is carried out to the light for exposing to incidence surface by translucent cover, to improve the essence of light distribution
Accuracy solves the problems, such as to cause comfort level low using lens light distribution and causes light distribution not accurate only with reflector light distribution,
Improve the comfort level and light distribution precision of tunnel illumination.In addition, light distribution device of the invention has the advantages of simple structure and easy realization and pacifies
Dress, meets the requirement of most tunnel illumination.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the light distribution device for tunnel illumination of the present invention；
Fig. 2 is the cross-sectional view of light distribution device of the invention in C0 ° of-C180 ° of directions；
Fig. 3 is the cross-sectional view of light distribution device of the invention in C90 ° of-C270 ° of directions；
Fig. 4 is the schematic diagram of the first formula with corresponding curved path.
Specific embodiment
Embodiment one
As shown in Figure 1 to Figure 3, the present embodiment provides a kind of light distribution device for tunnel illumination, including reflector 1 and thoroughly
Light shield 2, the translucent cover 2 include incidence surface and light-emitting surface, and the bottom of the reflector 1 is arranged on incidence surface, described reflective
The top of device 1 is equipped with the groove for placing LED light source 3, and the reflector 1 is for reflexing to the light of LED light source 3 into light
Face, the translucent cover 2 is for the light for exposing to incidence surface to be scattered.
Referring to Fig.1, the top of the reflector 1 is equipped with groove, and the groove is for placing LED light source 3.Referring to Fig. 2, institute
State LED light source 3 light be irradiated into reflector 1 after, reflector 1 to light carry out the second sub-distribution, the reflector 1 it is reflective
Face uses arcuate structure, such as the reflective surface of reflector 1 that can use semi-spherical shape, can also use the half of cylindrical side
Deng.Referring to Fig. 3, after light is reflexed to incidence surface by the reflector 1, there is translucent cover 2 to carry out third time light distribution to light, it is described
Translucent cover 2 is that solid lens scatter out light by the refraction of translucent cover 2, to realize accurately spacing light distribution.This
Embodiment carries out second of light distribution using reflector 1, can be improved the comfort level of illumination, then carries out the to light by translucent cover 2
Light distribution three times realizes accurately light distribution.In addition, the light distribution device of the present embodiment has the advantages of simple structure and easy realization and installs, meet big
The requirement of Multiple tunnel illumination.
Referring to Fig.1, it is further used as preferred embodiment, the reflector 1 is in arched door shape.
On C0 ° of-C180 ° of cross sections of light distribution device, reflector 1 reflects light, C90 ° of light distribution device-
On C270 ° of cross section, reflector 1 does not do with light processing light.
Referring to Fig.1, it is further used as preferred embodiment, the incidence surface is wave curved surface, and the light-emitting surface is flat
Face.
Light-emitting surface is designed as plane, is more easily cleaned light distribution device accumulatingdust.
Referring to Fig. 2, it is further used as preferred embodiment, it is described anti-on C0 ° of-C180 ° of cross sections of light distribution device
Light device 1 is inverted u-shaped, and the incidence surface and light-emitting surface are straight line.The shooting angle of the reflector 1 is 60 ° -100 °.
The reflector 1 uses globoidal structure, can change the light distribution angle of Tunnel Lamp by adjusting the curvature of arcuate structure
Degree.On C0 ° of-C180 ° of cross sections of light distribution device, by the reflection of reflector 1, the beam optical port beam angle to LED light source 3 is
60 ° -100 °, i.e. the shooting angle in 1 exit of reflector is 60 ° -100 °, and specifically, the shooting angle of the present embodiment is
80 °, all reflection lights all control and carry out incidence surface within 80 ° of ranges.The translucent cover 2 is planar design, does not change LED
Via the emergent ray angle after reflector 1, so it is suitable for the tunnel illumination of bilateral 2-3 lane width.
Referring to Fig. 3, it is further used as preferred embodiment, it is described on C90 ° of-C270 ° of cross sections of light distribution device
Reflector 1 is in rectangle, and the incidence surface is in wave, and the light-emitting surface is straight line.
On C90 ° of-C270 ° of cross sections of light distribution device, reflector 1 is not done with light processing, light via translucent cover 2 into
Row diverging, by adjusting the wave radian of incidence surface, diffusion of the adjustable light in light-emitting surface.
Referring to Fig. 3, it is further used as preferred embodiment, it is described on C90 ° of-C270 ° of cross sections of light distribution device
The wave of incidence surface is made of the camber line connection of multiple indents.The shooting angle of the light-emitting surface is 110-150 °.
The wave is all made of the camber line of indent, and the parameter of each camber line is identical, in the shooting angle of light-emitting surface
It is 110-150 °.Specifically, in the present embodiment, light is in longitudinal direction (i.e. C90 ° of light distribution device-C270 ° of cross sections
Direction) light-emitting angle diffuse to 120-140 °, i.e., shooting angle is 120-140 °, reduces what 3 central light strength of LED light source was concentrated
Phenomenon, can accomplish the accurate light distribution of big spacing, and avoid the occurrence of glare.
Referring to Fig. 4, it is further used as preferred embodiment, the curved path of the camber line meets the first formula, described
First formula are as follows:
Y1=-7E-05x4+0.003x3-0.0329x2-0.0058x+1.0449
Wherein Y1 represents ordinate, and the value range of abscissa is 0 < X < 10.
The curved path of the camber line meets the first formula, and related coefficient reaches 0.999.
In conclusion a kind of light distribution device for tunnel illumination of the present embodiment has the following beneficial effects: less
(1), second of light distribution is carried out using light of the reflector 1 to LED light source 3, promotes the comfort level of illumination, then by saturating
Light shield 2 carries out third time light distribution to the light for exposing to incidence surface and solves to improve the precision of light distribution using lens
Light causes comfort level low and only with the problem that 1 light distribution of reflector causes light distribution not accurate, improves the comfortable of tunnel illumination
Degree and light distribution precision.In addition, light distribution device of the invention has the advantages of simple structure and easy realization and installs, meet most tunnel illumination
Requirement.
(2), the C0 ° of-C180 ° of cross-sectional direction using reflector 1 in light distribution device carries out light distribution, is existed using translucent cover 2
C90 ° of-C270 ° of cross-sectional direction of light distribution device carries out light distribution, can according to different application environments, in different directions into
Row is adjusted, such as in road width difference, adjusts the radian of reflector 1；When the spacing for installing lamp needs to adjust, adjust saturating
The radian of the incidence surface of light shield 2 improves the applicability of light distribution device, enable light distribution device generally adapt to in tunnel illumination.
Embodiment two
As shown in Fig. 2, the present embodiment provides a kind of lighting system, including LED light source and light distribution device, the light distribution device
Using a kind of light distribution device for tunnel illumination described in embodiment one.
A kind of lighting system of the present embodiment has a kind of light distribution for tunnel illumination described in the embodiment of the present invention one
Any technical characteristic of device combines, and has the corresponding function of embodiment one and beneficial effect.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. a kind of light distribution device for tunnel illumination, which is characterized in that including reflector and translucent cover, the translucent cover includes
The bottom of incidence surface and light-emitting surface, the reflector is arranged on incidence surface, and the top of the reflector is equipped with for placing LED
The groove of light source, the reflector are used to the light of LED light source reflexing to incidence surface, the translucent cover for will expose into
The light of smooth surface is scattered.
2. a kind of light distribution device for tunnel illumination according to claim 1, which is characterized in that the reflector is in arch
Gate-shaped.
3. a kind of light distribution device for tunnel illumination according to claim 2, which is characterized in that the incidence surface is wave
Unrestrained curved surface, the light-emitting surface are plane.
4. a kind of light distribution device for tunnel illumination according to claim 3, which is characterized in that in light distribution device
On C0 ° of-C180 ° of cross sections, the reflector is inverted u-shaped, and the incidence surface and light-emitting surface are straight line.
5. a kind of light distribution device for tunnel illumination according to claim 4, which is characterized in that in light distribution device
On C0 ° of-C180 ° of cross sections, the shooting angle of the reflector is 60 ° -100 °.
6. a kind of light distribution device for tunnel illumination according to claim 3, which is characterized in that in light distribution device
On C90 ° of-C270 ° of cross sections, the reflector is in rectangle, and the incidence surface is in wave, and the light-emitting surface is straight line.
7. a kind of light distribution device for tunnel illumination according to claim 6, which is characterized in that in light distribution device
On C90 ° of-C270 ° of cross sections, the wave of the incidence surface is made of the camber line connection of multiple indents.
8. a kind of light distribution device for tunnel illumination according to claim 7, which is characterized in that in light distribution device
On C90 ° of-C270 ° of cross sections, the shooting angle of the light-emitting surface is 110-150 °.
9. a kind of light distribution device for tunnel illumination according to claim 8, which is characterized in that the curve of the camber line
Path meets the first formula, first formula are as follows:
Y1=-7E-05x4+0.003x3-0.0329x2-0.0058x+1.0449
Wherein Y1 represents ordinate, and the value range of abscissa is 0 < X < 10.
10. a kind of lighting system, which is characterized in that including LED light source and light distribution device, the light distribution device uses claim
A kind of described in any item light distribution devices for tunnel illumination of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910667661.2A CN110388597A (en) | 2019-07-23 | 2019-07-23 | A kind of light distribution device and lighting system for tunnel illumination |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910667661.2A CN110388597A (en) | 2019-07-23 | 2019-07-23 | A kind of light distribution device and lighting system for tunnel illumination |
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| CN110388597A true CN110388597A (en) | 2019-10-29 |
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| CN201910667661.2A Pending CN110388597A (en) | 2019-07-23 | 2019-07-23 | A kind of light distribution device and lighting system for tunnel illumination |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431150A (en) * | 2020-11-16 | 2021-03-02 | 安徽中益新材料科技有限公司 | Induction system of multifunctional profile band of extra-long tunnel |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999064784A1 (en) * | 1998-06-08 | 1999-12-16 | Karlheinz Strobl | Efficient light engine systems, components and methods of manufacture |
| KR20060089765A (en) * | 2005-02-04 | 2006-08-09 | 주식회사 엘엠 | Lamp apparatus for tunnel |
| CN201237112Y (en) * | 2008-06-13 | 2009-05-13 | 上海宝康电子控制工程有限公司 | High-power LED tunnel lamp |
| CN202082811U (en) * | 2011-05-09 | 2011-12-21 | 苏州市银河照明器材有限公司 | High-power LED (Light-Emitting Diode) road lamp with secondary light distribution reflecting cover |
| CN102691972A (en) * | 2011-03-25 | 2012-09-26 | 刘木清 | LED secondary optical system forming rectangular light spots, LED light source module, and LED lamp |
| TWM462335U (en) * | 2013-01-04 | 2013-09-21 | Er Optipower Technology Corp Ltd | Multipurpose lamp holder structure improvement |
| CN205065469U (en) * | 2015-10-13 | 2016-03-02 | 深圳市证通佳明光电有限公司 | A LED lamps and lanterns for tunnel illumination |
| CN207049727U (en) * | 2017-08-17 | 2018-02-27 | 宁波晟泰照明科技有限公司 | A kind of tunnel illumination LED |
| CN210373026U (en) * | 2019-07-23 | 2020-04-21 | 广东德洛斯照明工业有限公司 | Light distribution device for tunnel illumination and illumination system |
-
2019
- 2019-07-23 CN CN201910667661.2A patent/CN110388597A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999064784A1 (en) * | 1998-06-08 | 1999-12-16 | Karlheinz Strobl | Efficient light engine systems, components and methods of manufacture |
| KR20060089765A (en) * | 2005-02-04 | 2006-08-09 | 주식회사 엘엠 | Lamp apparatus for tunnel |
| CN201237112Y (en) * | 2008-06-13 | 2009-05-13 | 上海宝康电子控制工程有限公司 | High-power LED tunnel lamp |
| CN102691972A (en) * | 2011-03-25 | 2012-09-26 | 刘木清 | LED secondary optical system forming rectangular light spots, LED light source module, and LED lamp |
| CN202082811U (en) * | 2011-05-09 | 2011-12-21 | 苏州市银河照明器材有限公司 | High-power LED (Light-Emitting Diode) road lamp with secondary light distribution reflecting cover |
| TWM462335U (en) * | 2013-01-04 | 2013-09-21 | Er Optipower Technology Corp Ltd | Multipurpose lamp holder structure improvement |
| CN205065469U (en) * | 2015-10-13 | 2016-03-02 | 深圳市证通佳明光电有限公司 | A LED lamps and lanterns for tunnel illumination |
| CN207049727U (en) * | 2017-08-17 | 2018-02-27 | 宁波晟泰照明科技有限公司 | A kind of tunnel illumination LED |
| CN210373026U (en) * | 2019-07-23 | 2020-04-21 | 广东德洛斯照明工业有限公司 | Light distribution device for tunnel illumination and illumination system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431150A (en) * | 2020-11-16 | 2021-03-02 | 安徽中益新材料科技有限公司 | Induction system of multifunctional profile band of extra-long tunnel |
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