Utility model content
For the defect of prior art, the utility model provides a kind of sunlight collection conduction device based on hollow flexible light guide pipe, under object is to keep the flexibility of photoconductive tube to pass the prerequisite of light and low transmission loss, greatly increase the angular aperture of sunlight collection, improve photoconductive tube coupling efficiency, realize the sunshine conductive illumination of low cost, high efficiency, long distance.
The utility model provides a kind of sunlight collection conduction device based on hollow flexible light guide pipe, comprise daylighting conduit, its inwall is attached with the first optical reflectance coating, and for providing the incident end face of 180 degree of wide-angles for sunshine, the sunshine of collection carries out reflective propagation in the catheter; Optically focused conduit, it is inverted cone-shaped structure, and one end is connected with the outgoing end face of daylighting conduit, and inwall is attached with the second optical reflectance coating, for carrying out reflective propagation to after the sunshine coupling optically focused gathered; And flexible biography photoconductive tube, its front end is fixedly connected with the other end of optically focused conduit, and inwall is attached with the 3rd optical reflectance coating, passes the light in photoconductive tube for receiving all flexibilities that enters and realizes long-distance nondestructive transmission.
As an embodiment of the present utility model, daylighting conduit comprise formed by hard material the first conduit, be arranged at the load-carrying members at described first conduit top and be arranged at the draw-in groove of described first catheter tail.
As another embodiment of the present utility model, daylighting conduit comprise formed by hard material the first conduit, be arranged at the load-carrying members at described first conduit top and be arranged at the skeleton of described first catheter tail.Wherein, skeleton is fan-shaped fenestral fabric or circular net pore structure.
Wherein, the first catheter outer surface is provided with screw thread, and described first conduit middle and upper part is provided with annular slot.The bore scope of the first conduit is 50cm ~ 200cm.
In the utility model embodiment, flexible pass photoconductive tube comprise the second conduit, be arranged on the second catheter proximal end and for fix with described optically focused conduit draw-in groove, be arranged on the second conduit tail end and for expanding with rear class the connector that illuminating lamp shade is connected.
Wherein, the second conduit is bent plastic tube.
In the utility model embodiment, the reflectivity that the reflectivity that the reflectivity of the first optical reflectance coating is greater than the 50%, second optical reflectance coating is greater than the 50%, the 3rd optical reflectance coating is greater than 75%.
In the utility model embodiment, optically focused conduit comprises cone-shaped cavity and guide coupling; The scope of the conical inclination γ of described cone-shaped cavity is 0-30 °.
Preferably, the scope of the conical inclination γ of cone-shaped cavity is 0-10 °.
As an embodiment of the present utility model, optically focused conduit also comprises the coupled lens being arranged on described cone-shaped cavity top, for focusing on light beam.
The utility model proposes brand-new guide-lighting mode in optical illumination field, by achieving the target allowing full angle light to carry out almost lossless propagation in catheter interior to the mode showing coating in flexible light guide pipe; Have the following advantages:
(1) 180 degree of full-shape leads to light.Existing fiber carries out biography light owing to utilizing the total reflection characteristic of fiber optic materials, be subject to refractive index restriction inside and outside optical fiber, it receives the little and very difficult increase in light aperture, must the high daylight of service precision follow the trail of, alignment device, which results in system easily aging, precision is inadequate, maintenance cost is high problem, the utility model utilizes the chemical film of table in flexible material to carry out being different from the harmless leaded light of high reverse--bias of total reflection principle, do not limit by the cirtical angle of total reflection, allow full angle to lead to light, solve the technical barrier that current optical fiber light-guiding runs into.
(2) flexible light-conducting.The another kind of sunlight collection conduction device being different from optical fiber light-guiding at present on the market conducts for utilizing steel pipe directly to receive light, enters required field of illumination.This kind of device generally arranges larger due to the bore of steel pipe, does not need to carry out daylight real-time tracing, but pipe diameter is large, takes up room large, cannot realize flexible bending, can only enter indoor toply to throw light on.The utility model, owing to using flexible material, allow flexible light-conducting, and guide-lighting bore is little, easy for installation, is suitable for many floors, longer distance, Bendable leaded light.The utility model uses flexible material in selection, can carry out bending according to actual conditions so that imported by daylight indoor.
(3) newly-increased optically focused conduit is to ensure low-loss.Traditional solar collector conduction device is only that coupled conductor directly carries out biography light after lighting structure.And the utility model structurally newly-increased one-level taper optically focused conduit, can according to actual conditions select lens transmission-type, reflecting film reflects formula or the two combine.On the one hand light beam being focused on, reduce the biography light bore that device is total, determining that bullet design parameter is in the hope of reaching light loss of passing at the low most on the other hand according to the actual requirements.
(4) mechanical structure motion number of times is reduced.Traditional daylight tracing type solar collector conduction device needs to use controller control driven by motor lighting surface to follow, and the sun is mobile in real time to be controlled within the cirtical angle of total reflection of optical fiber with the incidence angle guaranteeing different angles to be irradiated to tellurian light, thus propagates in a fiber.This just causes the frame for movement times of exercise of device and precision to require corresponding increase.And owing to there is not the restriction of the cirtical angle of total reflection in the utility model, suitably can reduce times of exercise and the alignment precision requirement of mechanical device, thus reduce frame for movement fault rate, substantially increase the life-span of device, maintenance cost is extremely low, is convenient to carry out marketing.
(5) light easy installation.Heavy caliber hard light-collecting tube road is structurally progressively transitted to small caliber flexible by taper coupling optically focused pipeline and passes photoconductive tube by the utility model, light and handy convenience, taking up room little, simplify and install, carrying out green day optical illumination when substantially not affecting the arrangement of current spatial facility.The utility model arranges front stage connector and draw-in groove, and installer only need carry out boring and install and device assembling in floor, simplifies construction work.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model embodiment provides a kind of novel sunlight collection conduction device, under keeping the flexibility of photoconductive tube to pass the prerequisite of light and low transmission loss, greatly increase the angular aperture of sunlight collection, improve photoconductive tube coupling efficiency, realize the sunshine conductive illumination of low cost, high efficiency, long distance.
The utility model provides a kind of sunlight collection conduction device based on hollow flexible light guide pipe, as shown in Figure 1, is made up of heavy caliber daylighting conduit 1, taper optically focused conduit 2 and flexible photoconductive tube 3 three part that passes.Daylighting conduit 1 is the hard pipeline that a kind of inwall is coated with optical reflectance coating, and bore is comparatively large, makes logical light quantity larger to gather sunshine; Optically focused conduit 2 is inverted cone-shaped structure pipelines that a kind of inwall is coated with optical reflectance coating, and the sunshine of daylighting conduit collection is coupled into flexible biography photoconductive tube 3 by optically focused conduit; Flexible biography photoconductive tube 3 is a kind of flexible material hollow conduits, the inwall of hollow conduit is prepared high effective optical reflectance coating (reflectivity should be greater than 75%), all light also realization length distance leaded lights that can enter flexible biography photoconductive tube can be received transmit, a prior art difficult problem can be solved well.
The utility model as the rear class transmission equipment of daylight import system, after being arranged on daylight condenser lens; As shown in Figure 1, heavy caliber daylighting conduit 1, taper optically focused conduit 2 and flexible biography photoconductive tube 3 three part is divided into.According to the difference of concrete installation site design parameter (bore, the conical inclination of pig tail catheter, the shape of three section transitions connectors as daylighting conduit) finely tuned and (heavy caliber should be chosen in principle and ensure luminous flux, the conical inclination chosen should ensure that light is incident to reduce the order of reflection that collects in process thus to reduce the wastage with maximum incident angle in end, need installing space be considered and carry out matching in conjunction with light path simulation software and choose), to make guide-lighting performance best, most effective.Heavy caliber daylighting conduit provides the incident end face up to 180 degree of wide-angles for the daylight after lens focus, and daylight carries out reflective propagation in the duct; Be close to by taper coupled conductor and nondestructively daylight sent into small caliber flexible biography photoconductive tube, finally enter indoor and carry out green, emergency lighting.
In the utility model embodiment, heavy caliber daylighting conduit 1 can be made up of hard material (as metal material).Daylighting ability corresponding increase with the increase of bore of daylighting conduit, consider concrete shared space and receive light quantity and final illuminating effect, its best bore scope is 50cm ~ 200cm.Daylighting conduit top arranges load-carrying members and retaining thread hole, is convenient to be connected with solar focusing lens on it.Daylighting catheter tail arranges draw-in groove with fixing rear class taper coupled structure.Daylighting catheter outer surface is provided with screw thread, convenient fixing and installation.Daylighting conduit middle and upper part arranges annular slot to be fixed on floor earth's surface.
In the utility model embodiment, optically focused conduit 2 can be transmission-type taper optically focused conduit, also can be reflective taper optically focused conduit.Light is collected so that propagate in the coating plastic optical fiber that bore is less.The taper inclination angle of taper optically focused conduit is determined according to actual conditions.As shown in Fig. 2 (a), for reflective taper optically focused conduit.Note conical inclination is γ, and for ensureing that light is in the inner biography photoconductive tube direction transmission along forward towards rear class of coupled structure, consider grazing incidence light herein, that is: the light after tapered end face reflection is along the outgoing of conical surface normal direction.Angle of reflection then now on tapered end face and incidence angle are 2 γ.Note tapered end face incidence point place's normal and plumb line angle are α.Daylight be incident to device hard structure receive photoconductive tube time and plumb line angle be β.Daylight be incident to hard structure reflection end face time incidence angle be δ.Then can obtain:
α=2γ+β
α+γ=π/2
And then release
β=(π/2)-3γ
Make the receipts optic angle β of whole device as far as possible large, under the prerequisite meeting light normal propagation, conical inclination γ should be as far as possible little, the scope of general conical inclination γ is at 0-30 °, be preferably 0-10 °, can make when daylight moves within the scope of 60 degree, device keeps motionless still can have light to import indoor.
Consider that rear class can be set to by the length of whole device on the one hand and pass photoconduction tube bank, then the top of taper optically focused conduit can be added a collector lens, i.e. transmission-type taper optically focused conduit as Suo Shi Fig. 2 (b) on the other hand.Light enters after hard structure receives photoconductive tube and first collects through collector lens, then reflects at conical inboard wall, and tapered end face place incidence angle is
.Ensureing, under the condition that loss is lower, to reduce order of reflection on the one hand, suitably can increase the inclination angle number of degrees of taper condenser tube ferrule to shorten the length of whole device on the other hand, save space.
The upper surface shape of taper optically focused conduit 2 depending on actual conditions, at the circular piece easily processed without recommendation during particular/special requirement.Taper optically focused conduit can ensure that light is entering rear class fiber end face after transmission or reflection, and ensures low transmission loss.
In the utility model embodiment, flexible biography photoconductive tube 3 can be unitary catheter, also can be vessel cluster.The flexible inner surface passing photoconductive tube 3 is coated with thin layer (as metal level) through special process, makes inwall be high reflectance state (reflectivity is greater than 75%), and light is by reflecting along pipe transmmision.Flexible biography light guide body is flexible material (as plastics), can carry out bending and adjusting according to concrete installation site to a certain extent.The flexible photoconductive tube front end that passes arranges fixed card slot, is convenient to be connected with prime taper condenser tube ferrule.The flexible photoconductive tube tail end that passes arranges connector (can be metal or other materials), and in constructability process, rear class expands the assembling of illuminating lamp shade.Flexible to pass photoconductive tube can be a photoconductive tube, also can pass photoconduction tube bank, comes to adjust flexibly according to the number of required field of illumination and brightness.
The utility model proposes brand-new guide-lighting mode in optical illumination field, by achieving the target allowing full angle light to carry out almost lossless propagation in catheter interior to the mode showing coating in flexible light guide pipe.
(1) 180 degree of full angle leads to light.Existing fiber utilizes the total reflection characteristic of fiber optic materials to carry out biography light, is subject to refractive index restriction inside and outside optical fiber, can only propagates into the light of firing angle within cirtical angle of total reflection i scope.As shown in Fig. 3 (a), for conventional quartz optical fiber, fiber core refractive index n
1be greater than cladding index n
2, according to fresnel formula n
1sini=n
2sinr ... (1.1); As r=90 °, be equivalent to without transmitted ray, namely when:
light is totally reflected, go out transmission at fibre core and clad interface and go out for evanescent wave, not loss light energy, now light ray energy is bound within fibre core and clad interface, can nondestructively propagate vertically.I is the critical angle that total reflection occurs, and for the light being greater than this critical angle incidence, then transmittance and reflectance can occur, light energy is constantly lost with the increase of transmission number of times, finally cannot propagate.Total reflection is relied on to propagate the optical fiber of light for this type of, due to the restriction of critical angle, it receives the little and very difficult increase in light aperture, when applying to optical lighting system as collecting and conducting device, must the high daylight of service precision follow the trail of, alignment device, which results in system easily aging, precision is inadequate, maintenance cost is high problem.As shown in Fig. 3 (b), the utility model utilizes the chemical film of table in flexible material to carry out being different from the harmless leaded light of high reverse--bias of total reflection principle, do not limit by the cirtical angle of total reflection, the light that instant incidence angle is greater than cirtical angle of total reflection i also can carry out the reflection of high reflectance, because transmission loss is little, light axially can be propagated along conduit.Namely the utility model allows full angle to lead to light, solves the technical barrier that current optical fiber light-guiding runs into.
(2) flexible light-conducting.The another kind of sunlight collection conduction device being different from optical fiber light-guiding at present on the market conducts for utilizing steel pipe directly to receive light, enters required field of illumination.This kind of device generally arranges larger due to the bore of steel pipe, does not need to carry out daylight real-time tracing, but pipe diameter is large, takes up room large, cannot realize flexible bending, can only enter indoor toply to throw light on.The utility model, owing to using flexible material, allow flexible light-conducting, and guide-lighting bore is little, easy for installation, is suitable for many floors, longer distance, Bendable leaded light.The utility model uses flexible material in selection, can carry out bending according to actual conditions so that imported by daylight indoor.
(3) newly-increased optically focused conduit is to ensure low-loss.Traditional solar collector conduction device is only that coupled conductor directly carries out biography light after lighting structure.And the utility model structurally newly-increased one-level taper optically focused conduit, can according to actual conditions select lens transmission-type, reflecting film reflects formula or the two combine.On the one hand light beam being focused on, reduce the biography light bore that device is total, determining that bullet design parameter is in the hope of reaching light loss of passing at the low most on the other hand according to the actual requirements.
(4) mechanical structure motion number of times is reduced.Traditional daylight tracing type solar collector conduction device needs to use controller control driven by motor lighting surface to follow, and the sun is mobile in real time to be controlled within the cirtical angle of total reflection of optical fiber with the incidence angle guaranteeing different angles to be irradiated to tellurian light, thus propagates in a fiber.This just causes the frame for movement times of exercise of device and precision to require corresponding increase.And owing to there is not the restriction of the cirtical angle of total reflection in the utility model, suitably can reduce times of exercise and the alignment precision requirement of mechanical device, thus reduce frame for movement fault rate, substantially increase the life-span of device, maintenance cost is extremely low, is convenient to carry out marketing.
(5) light easy installation.Heavy caliber hard light-collecting tube road is structurally progressively transitted to small caliber flexible by taper coupling optically focused pipeline and passes photoconductive tube by the utility model, light and handy convenience, taking up room little, simplify and install, carrying out green day optical illumination when substantially not affecting the arrangement of current spatial facility.The utility model arranges front stage connector and draw-in groove, and installer only need carry out boring and install and device assembling in floor, simplifies construction work.
As shown in Figure 4, the utility model daylighting conduit profile.Described daylighting conduit is made up of hard conduit, top supporting rod, bottom fixing frame.Described daylighting conduit (can be cylindricality or other shapes) is hard material (as steel material), is installed on house, floor top or outdoor vacant lot place.Hard structure plays a supportive role on the one hand, is convenient to install fix.On the other hand because light enters rear class taper optically focused conduit after reflection in daylighting conduit, stable to ensure minimum coupling, loss for making two-stage coupling parameter mate, must ensure that being exposed to outside daylighting guide-tube structure stablizes, hard material can well meet this requirement.The bore of daylighting conduit sets according to actual needs, and under its caliber size has influence on the same terms, system leads to light quantity size, and with indoor 60w incandescent lamp for standard, after calculating, the clear aperture of daylighting conduit is best at 50cm ~ 200cm.In daylight illuminating system, daylighting conduit top is connected with planar solar concentrator.Hard structure conduit upper is provided with optical collector support bar 13, and support bar top is provided with the draw-in groove 12 for fixing optical collector, by fixing lock ring 11 rotational lock.Pipeline outer wall 14 is carved with screw thread and plays anti-skidding shock-absorbing effect.Inwall 15 is smooth is coated with high reflectance (reflectivity should be greater than 50%) optical thin film (as the optical thin film that adulterate in the PET resin agent of HR polymeric optical and plasticizer are prepared from), can reduce the loss of light energy to the full extent.Structure bottom is provided with bracing frame 16 (can be three-legged supporting frame or other planforms), plays protection, fixation.
As shown in Figure 5, daylighting conduit is gone to the bottom optionally mounting framework (can be fan-shaped latticed, circular net is poroid or other shapes), play the effect of fixed installation rear class taper condenser tube ferrule on the one hand, needed for actual, light beam dispersion can be carried out to prime light on the other hand, daylight is directed in multiple, different field of illuminations.Underrun skeleton 17 is divided into small-bore several independent lattice.Light enters each independent lattice respectively and propagates.
As shown in Figure 6, the utility model taper optically focused conduit cross section figure.Described taper optically focused conduit 2 can have transmission-type (Fig. 6 (a)) and reflective (Fig. 6 (b)) two kinds of structures.Taper optically focused conduit is made up of coupled lens (if reflective structure is then without described lens), cone-shaped cavity, guide coupling.Transmission-type taper optically focused conduit utilizes top lens to be focused on by light beam, to ensure that light is packed to rear class biography photoconductive tube caliber size, then enters biography photoconductive tube through the internal chamber wall reflection of cone-shaped cavity; Reflective taper optically focused conduit arranges dip angle parameter according to actual conditions, incident ray is packed after reflection, enters biography photoconductive tube.Transmission-type optically focused conduit can reduce order of reflection, is disposablely reduced by beam size, and reflection concentration type conduit can Simplified flowsheet, finally makes light arrive pass photoconductive tube end face by a few secondary reflection.The reflectivity (be guarantee laser propagation effect, reflectivity should be greater than 50% herein) that need plate optical reflectance coating according to the transmissivity of selected lens and institute during actual selection considers loss factor, and to carry out scheme selected.When the transmitance of selected lens material is less than light conical inboard wall reflectivity long-pending, should prioritizing selection reflection concentration type conduit.In figure, 21 collect lens upper surface for transmission-type taper optically focused conduit, and 22 for collecting lens lower surface, and 23 is taper optically focused conduit outer wall.Taper condenser tube ferrule is connected with biography photoconductive tube by connector 25, is fixed by lock-screw 24 simultaneously.
As shown in Figure 7, the utility model flexibility passes photoconductive tube profile.Flexible material inwall is coated with high reflectivity film (as metallic film) through coating process by the flexible photoconductive tube 3 that passes.Passing photoconductive tube 3 skin is flexible material, bent, and convenient-laying and maximize utilize.31 is catheter outer outer surface, and 32 is catheter outer inner surface.Conduit internal layer surface 32 is coated with reflective coating 33, makes light pass the track in photoconductive tube by not being totally reflected critical angle being limited near total-reflection type lossless propagation.Reach the object of whole device full angle, efficient transmission light.
Those skilled in the art will readily understand, by reference to the accompanying drawings embodiment of the present utility model is described above, but the utility model is not limited to above-mentioned detailed description of the invention, above-mentioned detailed description of the invention is only schematic, instead of it is restrictive, those of ordinary skill in the art is under enlightenment of the present utility model, do not departing under the ambit that the utility model aim and claim protect, also can make a lot of form, all any amendments done within spirit of the present utility model and principle, equivalent replacement and improvement etc., all should be included within protection domain of the present utility model.