Summary of the invention
Technical problem to be solved by this invention is: a kind of dual-functional louver blade is provided; It simultaneously is a sun face; Another side is a light guiding surface; Sun face can be outdoor with the sunray reflected back of irradiation on it, and it is outdoor that light guiding surface can import to indoor another part reflected back with irradiation all or part of sunray on it, the blinds sunshade light-conducting system that is made up of this dual-functional louver blade; Can come according to season and weather condition and people's actual requirement the retro-reflection of direct sunlight and deflection imported carry out flexibly, best regulation and control; Reach the high perspective rate of blinds sunshade light-conducting system, obtain indoor uniform sun lights lightness, and avoid indoor dazzle and summer is overheated and obtain more solar energy in the winter time in order to heating of house.Simultaneously, provide a kind of fast and convenient design formulas to confirm the angle and the physical dimension of the miniature tooth of louvre surface.
The technical scheme that the present invention adopted is specific as follows:
A kind of dual-functional louver blade; Comprise blade and switching mechanism thereof, it is characterized in that: blade simultaneously is the outdoor sun face of sunray reflected back that is used for shining on it, and another side is to be used for all or part of sunray that shines on it is imported to indoor light guiding surface; Switching mechanism orders about blade rotation; And can make sun face and light guiding surface transposition, and the sun face of blade is provided with miniature tooth, and the light guiding surface of blade partly or entirely is provided with miniature tooth.
Light guiding surface is up the time, the miniature tooth of light guiding surface by two kinds of the outside and inside parts not isodont form.
Said miniature tooth is for playing the retro-reflection tooth of retro-reflection effect to direct sunlight, described retro-reflection tooth comprises two the adjacent flank of tooth first flank of tooth and second flank of tooth, and first flank of tooth is vertical each other with second flank of tooth.
Second flank of tooth of said retro-reflection tooth and the angle of horizontal plane
HExcursion can be by 90 °-(β
Ia '+ H)/2≤α
H≤90 °-(β
Ia+ confirm that H)/2 wherein H is a sun altitude, β
Ia 'Be the line of a bit any of louvre blade and the outer end points of last one adjacent louvre blade and the angle of louvre blade outside horizontal plane, β
IaAny 1 i and the line of the outer end points of louvre blade and the angle of louvre blade outside horizontal plane for louvre blade.
Second flank of tooth of said retro-reflection tooth and horizontal plane angle α
HThe optimum value design formulas be α
H=90 °-(β
Ia '+ H)/2, H=β in the formula
Ca ', β
Ia 'Be the line of a bit any of louvre blade and the outer end points of last one adjacent louvre blade and the angle of louvre blade outside horizontal plane, β
Ca 'Be inner end point c and the line of the outer end points of last one adjacent louvre blade and the angle of louvre blade outside horizontal plane of louvre blade, its excursion is β
Ca '=30 °~35 °.
The miniature tooth of said light guiding surface is the suitable tooth that direct sunlight is played deflection importing effect, and said suitable tooth comprises two the adjacent flank of tooth first flank of tooth and second flank of tooth, and first flank of tooth is vertical each other with second flank of tooth.
The miniature tooth of said light guiding surface is the pawl that direct sunlight is played deflection importing effect; Described pawl comprises two the adjacent flank of tooth first flank of tooth and second flank of tooth; First flank of tooth is vertical each other with second flank of tooth; Be radiated at a part on second flank of tooth and direct sunlight deflection imported to indoor, another part direct sunlight is deflected on first flank of tooth outdoor aerial along sunlight incident direction reflected back by first flank of tooth again.
Beneficial effect of the present invention: by cross section is that the blinds sunshade light-conducting system that the dual-functional louver blade of arbitrary shape constitutes can reach the retro-reflection of control direct sunlight and the optimization of deflection import volume according to conversion in season and people's concrete needs; Make summer and winter overcome to the demand contradictory of sunlight; No matter high sun altitude of while or low sun altitude; System all keeps very high perspective rate; Satisfy the demand that people exchange with the vision of scenery outside window, compare with blinds sunshade light-conducting system in the past, native system dynamically has adaptivity to the sun; The number of operations of blinds only needs twice in one day, has removed traditional blinds and has needed constantly to rotate the trouble that blinds adapts to the variation and the intelligent control of blinds of sun altitude.
The specific embodiment
Fig. 1 has provided cross section (broad ways) and has been geometrical construction and all angles and the dimension definitions of corrugated louvre blade (sun face 1 up), and louvre blade comprises blade 10 and switching mechanism thereof, and blade 10 one sides are the outdoor sun faces 1 of sunray reflected back that are used for shining on it; Another side is to be used for irradiation all or part of sunray on it is imported to indoor light guiding surface 3, and switching mechanism orders about blade rotation, and can make sun face and light guiding surface transposition; The sun face 1 of blade is provided with miniature tooth; The light guiding surface 3 of blade partly or entirely is provided with miniature tooth, and wherein L is the width of blade 10, i.e. the outer end points a of blade 10 and the horizontal range of inner end point c; D is the pitch of adjacent two louvre blades 10; Promptly be the vertical distance of adjacent two louvre blade inner end point c, as preferably, the optimum ratio of the width L of the pitch D of adjacent two louvre blades 10 and louvre blade 10 is 0.7; The vertical distance that peak of block vision when h is louvre blade 10 horizontal positioned (being inner end point c ' here) and minimum point (being outer end points a ' here) are 2; Г is the perspective rate (Г=1-h/D), illustrate β among Fig. 1 (a) with the empty frame of arrow among the figure of blinds sunshade light-conducting system
Ca 'Be the line of the light guiding surface 3 outer end points a ' of the sun face 1 inner end point c of louvre blade 10 and last one adjacent louvre blade 1 and the angle of louvre blade 10 outside horizontal planes, β
Ia 'Be the line of the light guiding surface 3 outer end points a ' of sun face 1 any 1 i of louvre blade 10 and last one adjacent louvre blade 10 and the angle of louvre blade 10 outside horizontal planes, β
IaBe the line of the sun face 1 outer end points a of sun face 1 any 1 i of louvre blade 10 and louvre blade 10 and the angle of louvre blade 10 outside horizontal planes, β
IxBe the angle of any 1 i place reflection ray of the sun face of louvre blade 10 and horizontal plane, H is the angle (being referred to as sun altitude) of incident sunray and louvre blade 10 outside horizontal planes, β among Fig. 1 (b)
Ic 'Be the line of the light guiding surface 3 inner end point c ' of louvre blade 10 sun faces, 1 any 1 i and last one adjacent louvre blade 10 and the angle of louvre blade 10 inboard horizontal planes, β
IcBe the line of the sun face 1 inner end point c of sun face 1 any 1 i of louvre blade 10 and louvre blade 10 and the angle of louvre blade 10 inboard horizontal planes, among Fig. 1 (c)
Louvre blade 10 down rotates the angle that forms with initial installation position up the time for sun face 1, and this moment, louvre blade 10 outer end points a forwarded f to, and a ' forwards on f ' position, and some c in inner end forwards g to, and c ' forwards on g ' position, β
Gf 'Be the line of the reposition f of the light guiding surface 3 outer end points a ' of the reposition g of the sun face 1 inner end point c of louvre blade 10 and last one adjacent louvre blade 1 and the angle of louvre blade 10 outside horizontal planes, β
If 'Be the line of the reposition f ' of the light guiding surface 3 outer end points a ' of sun face 1 any 1 i of louvre blade 10 and last one adjacent louvre blade 10 and the angle of louvre blade 10 outside horizontal planes, β
IfBe the reposition f line of the sun face 1 outer end points a of sun face 1 any 1 i of louvre blade 10 and louvre blade 10 and the angle of louvre blade 10 outside horizontal planes, β
IxBe sun face 1 any 1 the i place reflection ray of louvre blade 10 and the angle of horizontal plane, H is a sun altitude); 10 pairs of direct sunlights of louvre blade carry out reflection ray and louvre blade 10 outside horizontal plane angle β that retro-reflection produced among Fig. 1 (a)
IxNeed to satisfy: (β
Ia+ H)/2≤β
Ix≤(β
Ia '+ H)/2,10 pairs of direct sunlights of louvre blade carry out reflection ray and the louvre blade 10 inboard horizontal plane angle β that the deflection importing is produced among Fig. 1 (b)
IxNeed to satisfy: 90 °+(β
Ic-H)/2≤β
Ix≤90 °+(β
Ic '-H)/2,10 pairs of direct sunlights of louvre blade carry out reflection ray and louvre blade 10 outside horizontal plane angle β that retro-reflection produced among Fig. 1 (c)
IxNeed to satisfy: (β
If+ H)/2≤β
Ix≤(β
If '+ H)/2.
Referring to Fig. 2, with 180 ° of louvre blade 10 upsets, then sun face 1 and light guiding surface 3 transpositions; Be light guiding surface 3 up, sun face 1 down, at this moment; The innner and outer end transposition of louvre blade sun face 1; Be the outer end a of louvre blade sun face 1 and the inner end c ' switch of last one adjacent louvre blade light guiding surface 3, the outer end a ' switch of the inner end c of louvre blade sun face 1 and last one adjacent louvre blade light guiding surface 3 is in order to narrate conveniently; Change each end points label symbol of the louvre blade behind the above-mentioned transposition label symbol of former sun face up time the into, then louvre blade geometrical construction and all angles and dimension definitions and the sun face 1 of light guiding surface 3 up the time is identical up the time.
The flank of tooth role of the miniature tooth on the louvre surface can be divided into two types, and one type is carried out retro-reflection to outdoor to direct sunlight, another kind ofly direct sunlight is carried out deflection imports to indoor.Fig. 3 (a)~(c) has provided direct sunlight has been played the geometry of the miniature tooth on the curved surface louvre blade of retro-reflection effect and deflection importing effect and the definition of face angle; Fig. 3 (a) is for playing the miniature tooth geometry and the viewpoint definition (being referred to as the retro-reflection tooth) of retro-reflection effect on the arbitrary surface louvre blade to direct sunlight; The retro-reflection tooth comprises two the adjacent flank of tooth first flank of tooth 6 and second flank of tooth 5; First flank of tooth 6 is vertical each other with second flank of tooth 5; Fig. 3 (b) is for playing miniature tooth (being referred to as along tooth) geometry and the viewpoint definition of deflection importing effect on the arbitrary surface louvre blade to direct sunlight, Fig. 3 (c) is for playing miniature tooth (the being referred to as pawl) geometry and the viewpoint definition of deflection importing effect to direct sunlight on the arbitrary surface louvre blade; Various miniature teeth equate along the facewidth p of louvre surface width; Tooth top is on the same louvre surface; First flank of tooth 6 that miniature tooth two is adjacent is vertical each other with second flank of tooth 5, direct sunlight is played retro-reflection tooth second flank of tooth 5 and the angle of horizontal plane on the curved surface louvre blade of retro-reflection effect
HExcursion can be by 90 °-(β
Ia '+ H)/2≤α
H≤90 °-(β
Ia+ H)/2 confirm, direct sunlight is played suitable tooth or the angle of pawl second flank of tooth 5 and horizontal plane on the curved surface bucket of deflection importing effect
HExcursion can be by (β
Ic-H)/2≤α
H≤(β
Ic '-confirm that H)/2 wherein H is a sun altitude; The effect of retro-reflection tooth is that the direct sunlight that drops on its second flank of tooth 5 is outdoor aerial along inclined to one side angle reflected back of sunlight incident direction; Maybe will drop on direct sunlight on miniature tooth second flank of tooth 5 deflects on first flank of tooth 6 or the direct sunlight that drops on miniature tooth first flank of tooth 6 deflects on second flank of tooth 5 outdoor aerial along sunlight incident direction reflected back again; Do not allow sunlight to rest on and be converted into heat on the blade; Thereby the shaded effects of playing generally are used to tackle high sun altitude H (sun altitude H>β in summer
Ca ') direct sunlight; Comprise two the adjacent flank of tooth first flank of tooth 6 and second flank of tooth 5 along tooth; First flank of tooth 6 is vertical each other with second flank of tooth 5; Second flank of tooth, 5 width along tooth are more much bigger than the width of first flank of tooth 6; Its effect is that the direct sunlight deflection that drops on its second flank of tooth 5 is directed into indoor use (and first flank of tooth 6 generally can not arrived by solar radiation) of doing daylight illumination and heating, generally tackles high sun altitude H (sun altitude H>β in winter along tooth
Ca ') or hang down sun altitude H (sun altitude H≤β summer in winter
Ca ') direct sunlight; Pawl comprises two the adjacent flank of tooth first flank of tooth 6 and second flank of tooth 5; First flank of tooth 6 is vertical each other with second flank of tooth 5; Second flank of tooth, 5 width of pawl are more much bigger than first flank of tooth, 6 width; Two flank of tooth play diverse effect to direct sunlight, impinge upon a part of direct sunlight on second flank of tooth 5 and are deflected and import to indoorly, and a part of direct sunlight is deflected on first flank of tooth 6 outdoor aerial along sunlight incident direction reflected back by first flank of tooth 6 again; Pawl generally is used for the direct sunlight deflection with maximum sun altitude H in winter (it is generally acknowledged this moment sun altitude H=45 °), makes it can not reflex to the light guiding surface of an adjacent louvre blade by inner end point c '.In order to tackle the direct sunlight of Various Seasonal and different sun altitudes, the sun face 1 of dual-functional louver blade all is set to the retro-reflection tooth, and the light guiding surface 3 of dual-functional louver blade will be processed into various ways: 1. all be shiny surface; 2. a part is a shiny surface, a part for the band toothed portion (such as, a preceding part is a pawl; A back part is a shiny surface, and 3. a part is one type of miniature tooth, another part be another kind of miniature tooth (such as; A preceding part is the retro-reflection tooth, and a back part is along tooth).
The shape of cross section of dual-functional louver blade can be linear, V font, eighty percent discount is linear and other arbitrary shape such as waveform; The sun face of
blade 1 and light guiding
surface 3 are with the reflective surface of miniature tooth (less sawtooth) (referring to Fig. 4~Fig. 7); Louvre
blade 10 can go up and down and also can rotate; Can also overturn 180 °, its
sun face 1 and light guiding
surface 3 transpositions, the angle of rotation of
louvre blade 10 are with subscripting
With
Expression, wherein
When representing that louvre
blade sun face 1 is up, it down rotates the angle with initial installation position,
When representing that
louvre blade 10
light guiding surfaces 3 up, it down rotates the angle with initial installation position; At high sun altitude H (sun altitude H>β in summer
Ca ') time, louvre
blade 10
sun faces 1 are up (when being horizontal
), arrive the direct sunlight retro-reflection that drops on its
sun face 1 miniature tooth outdoor; High in the winter time sun altitude H (sun altitude H>β
Ca ') time, the
light guiding surface 3 of
louvre blade 10 is up (when being horizontal
), import to indoor or whole direct sunlight deflections to the deflection of outdoor another part direct sunlight and import to indoor dropping on a part of direct sunlight retro-reflection on the
light guiding surface 3 miniature teeth; At low sun altitude (sun altitude H≤β in summer in winter
Ca ') time, louvre
blade 10
light guiding surfaces 3 are up (when being horizontal
), need
louvre blade 10 is down rotated this moment, make it with horizontal plane at an angle
(at this moment
), thereby do not allow the indoor generation dazzle of sunlight direct projection, will drop on a part of direct sunlight retro-reflection on the
louvre blade 10
light guiding surfaces 3 miniature teeth again and import to indoor or whole direct sunlight deflections to the deflection of outdoor another part direct sunlight and import to indoor.
The sun face 1 of louvre blade 10 and the method for light guiding surface 3 transpositions are; With louvre blade 10 from above or below number in order, the louvre blade 10 that will be numbered odd number then conspires to create one group, and the louvre blade that is numbered even number 10 is conspired to create another group; Earlier with one group of upset, and then with another group upset.
Fig. 4~Fig. 7 has shown the type and the distribution situation of linear, V font (h/L=8.6%), eighty percent discount linear (h/L=7.2%) and waveform (h/L=10.5%) louvre blade sun face and the miniature tooth of light guiding surface respectively.Cross section be the dual-functional louver blade of arbitrary shape should be adapted to summer and winter two Various Seasonal, be adapted to two different altitude of the sun angular zone (H>β again
Ca 'And H≤β
Ca ') variation, its sun face 1 all should have different miniature teeth with light guiding surface 3, the miniature tooth of light guiding surface 3 also can by two kinds of the outside and inside parts not isodont form; Fig. 7 (a) is (b) for being used for the above louvre blade from flooring 1.8m; Wherein (a) be sun face 1 up, (b) be light guiding surface 3 up, louvre blade is with label 10 expression; The Outboard Sections of light guiding surface 3 is with 31 expressions, and its width is so that (light guiding surface 3 is end points distance L a) outside some c ' in inner end becomes up the time from louvre blade inner end point c '
1Expression, the inside part of light guiding surface 3 be with 32 expressions, and its width is with the distance L of end points a ' outside louvre blade (light guiding surface up the time outside end points a ' become inner end point c)
2Expression; Fig. 7 (c) is (d) for being used for the louvre blade below the 1.8m of flooring; Wherein (c) be sun face 2 up, (d) be light guiding surface 4 up, louvre blade is with label 20 expression; The Outboard Sections of light guiding surface 4 is with 41 expressions, and its width is so that (light guiding surface 4 is end points distance L a) outside some c ' in inner end becomes up the time from louvre blade inner end point c '
1Expression, the inside part of light guiding surface 4 be with 42 expressions, and its width is with the distance L of end points a ' outside louvre blade (light guiding surface up the time outside end points a ' become inner end point c)
2Expression.
The
sun face 2 of the
louvre blade 20 among Fig. 4 (a), Fig. 5 (a), Fig. 6 (a), Fig. 7 (a) among the
sun face 1 of
louvre blade 10 and Fig. 4 (c), Fig. 5 (c), Fig. 6 (c), Fig. 7 (c) is used for sunshade up, louvre
blade 10 horizontal settings this moment (
Referring to Fig. 1), the retro-reflection tooth is set, second flank of
tooth 5 and horizontal plane angle α of retro-reflection tooth on it
HThe optimum value design formulas be α
H=90 °-(β
Ia '+ H)/2, H=β in the formula
Ca 'The
light guiding surface 3 of
louvre blade 10 up among Fig. 4 (b), Fig. 5 (b), Fig. 6 (b), Fig. 7 (b); Be used for from the above leaded light of flooring 1.8m;
Light guiding surface 3
Outboard Sections 31 bands of
louvre blade 10 are along tooth or pawl; So that the direct sunlight of maximum sun altitude H in winter (H=45 °) can not deflect near the sun face of
adjacent louvre blade 10 inner end point c ', miniature tooth second flank of
tooth 5 and horizontal plane angle α
HThe optimum value design formulas be α
H=(β
Ix-H)/2, and (β
Ic-H)/2≤α
H≤(β
Ic '-H)/2, and in the formula H=45 °, width L
1=0~L, inside
part 32 is a shiny surface, its width L
2=L-L
1The
light guiding surface 4 of
louvre blade 20 is in initial installation position up among Fig. 4 (d), Fig. 5 (d), Fig. 6 (d), Fig. 7 (d); Be used for from the following leaded light of flooring 1.8m; Its
Outboard Sections 41 is taken back the interflection tooth, suitable tooth of inside
part 42 bands or pawl, second flank of
tooth 5 and horizontal plane angle α of retro-reflection tooth
HThe optimum value design formulas be α
H=90 °-(β
Ia '+ H)/2, H=β in the formula
Ca ', width L
1=L/2~2L/3, second flank of
tooth 5 and horizontal plane angle α of inside
part 42
HOptimum value to choose be that
louvre blade 20 is rotated counterclockwise an angle around louvre blade rotating shaft (broad ways mid point)
Make the inner end point c of
louvre blade 20 turn to reposition g, c ' turns to reposition g ', and the outer end points a of
louvre blade 20 turns to reposition f, and a ' turns to reposition f ', 2 g and the line of f ' and the angle β of
louvre blade 20 outside horizontal planes
Gf '=H=20 °, press α again
H=(β
Ig '-H)/2 calculate β
Ig 'Be the louvre blade line of the reposition (g ') of (i) and last one adjacent louvre blade inner end point (c ') and the angle of the inboard horizontal plane of louvre blade more arbitrarily, width L
2=L-L
1, so that at 20 °≤H≤β of sun altitude
Ca 'Reflection ray can not deflect into light and the
louvre blade 20 inboard horizontal plane angles that
sun face 1 and the deflection of a
louvre blade 20 imports and remains on more than 50 ° under the situation.
Confirm β in the reality
Ia 'Outer end points a ', β
Ic 'Inner end point c ' and β
Ig 'Inner end point c ' reposition g ' all to depart from certain distance with the inboard laterally and become a ", c " and g along the louvre blade horizontal direction ", so that reflection ray can not arrive on the last one adjacent louvre blade, promptly use β
Ia "β above replacing in the formula
Ia ', use β
Ic "Substituted beta
Ic ', use β
Ig "Substituted beta
Ig ', generally get β
Ia "=β
Ia '-(0 °~3 °), β
Ic "=β
Ic '-(0 °~3 °) and β
Ig "=β
Ig '-(0 °~3 °).In addition, β
Ca 'Different because of the cross section of louvre blade, its excursion is β
Ca '=30 °~35 °.
Fig. 8 a~Fig. 8 i, Fig. 9 a~Fig. 9 i, Figure 10 a~Figure 10 i, Figure 11 a~Figure 11 i have shown linear, V font respectively, eighty percent discount is linear is applied to blinds sunshade light-conducting system top and the bottom, imports situation in the light retro-reflection of different sun altitude H and deflection with the waveform louvre blade; Dotted line is represented direct sunlight among the above-mentioned figure; Corresponding with it solid line is represented by the light of blade retro-reflection or deflecting reflection; H is a sun altitude; A among the figure (is that Fig. 8 a, Fig. 9 a, Figure 10 a, Figure 11 are a) for dual-functional louver blade sun face light retro-reflection situation to different sun altitude H up the time, at high sun altitude H (H>β
Ca ') situation, drop on the louvre blade direct sunlight all by retro-reflection to outdoor, at low sun altitude H (H≤β
Ca ') situation, if the part that louvre blade still during horizontal setting, then drops on the direct sunlight on the louvre blade by the louvre blade retro-reflection to the light guiding surface of a last adjacent louvre blade; Be reflected to outdoor then; Produce dazzle in the direct inlet chamber of another part, therefore, at low sun altitude H (H≤β
Ca ') situation needs louvre blade is down rotated a corresponding angle
Make direct sunlight directly in the inlet chamber; B among the figure (being Fig. 8 b, Fig. 9 b, Figure 10 b, Figure 11 b) rotates an angle up and down for the dual-functional louver blade sun face
The time to the sunray retro-reflection situation of different sun altitude H, no matter at high sun altitude H (H>β
Ca ') still at low sun altitude H (H≤β
Ca ') situation, drop on the louvre blade direct sunlight all by retro-reflection to outdoor, this means, in summer, when we one day not in the room or during office, can dual-functional louver blade be adjusted to this position; C among the figure (being Fig. 8 c, Fig. 9 c, Figure 10 c, Figure 11 c) is for rotating an angle up and down from the above dual-functional louver blade light guiding surface of flooring 1.8m
The time to low sun altitude H (H≤β
Ca ') sunray retro-reflection and deflection import situation, d among the figure (being Fig. 8 d, Fig. 9 d, Figure 10 d, Figure 11 d) is for from the above dual-functional louver blade light guiding surface of flooring 1.8m up and horizontal setting
The time to high sun altitude H (H>β
Ca ') sunray retro-reflection and deflection import situation; In 20 °≤H of sun altitude≤45 ° scope, drop on direct sunlight on the louvre blade all be deflected import to indoor, outside 20 °≤H of sun altitude≤45 ° scope; Drop on a part of direct sunlight on the louvre blade be deflected import to indoor; A part is reflected on the sun face of an adjacent louvre blade, is deflected then to reflex to outdoorly, can not produce dazzle; E among the figure (being Fig. 8 e, Fig. 9 e, Figure 10 e, Figure 11 e) rotates an angle up and down for the dual-functional louver blade light guiding surface below the 1.8m of flooring
The time to low sun altitude H (H≤β
Ca ') sunray retro-reflection and deflection import situation, f among the figure (being Fig. 8 f, Fig. 9 f, Figure 10 f, Figure 11 f) for the dual-functional louver blade light guiding surface below the 1.8m of flooring up and horizontal setting
The time to high sun altitude H (H>β
Ca ') sunray retro-reflection and deflection import situation, in 20 °≤H of sun altitude≤45 ° scope, drop on a part of direct sunlight on the louvre blade be deflected import to indoor; Another part by retro-reflection to outdoor, in sun altitude H>45 °, drop on the louvre blade direct sunlight all by retro-reflection to outdoor; Can not produce dazzle, in sun altitude H<20 °, the direct sunlight that drops on the louvre blade at first is reflected on the sun face of an adjacent louvre blade; And then be deflected reflex to outdoor; Also can not produce dazzle, hence one can see that, and the light guiding surface of dual-functional louver blade also can be advantageously applied to winter; Also summer can be advantageously applied to, season in spring and autumn (sun altitude H is higher) can also be advantageously applied to; G among the figure (being Fig. 8 g, Fig. 9 g, Figure 10 g, Figure 11 g) is for from the sun face of the above dual-functional louver blade of flooring 1.8m and light guiding surface sunray retro-reflection and the deflection importing situation when change transposition neatly summer with sun altitude; H among the figure (being Fig. 8 h, Fig. 9 h, Figure 10 h, Figure 11 h) is the sun face of the dual-functional louver blade below the 1.8m of flooring and light guiding surface sunray retro-reflection and the deflection importing situation when change transposition neatly summer with sun altitude; I among the figure (being Fig. 8 i, Fig. 9 i, Figure 10 i, Figure 11 i) is sunray retro-reflection and deflection importing situation when the sun face of the above dual-functional louver blade of flooring 1.8m and light guiding surface change transposition neatly with sun altitude in the winter time; Sunray retro-reflection and deflection importing situation when j among the figure (being Fig. 8 j, Fig. 9 j, Figure 10 j, Figure 11 j) changes transposition neatly with sun altitude in the winter time for the sun face of the dual-functional louver blade below the 1.8m of flooring and light guiding surface; As can be seen from the figure; By above-mentioned cross section is that the various blinds sunshade light-conducting systems that the dual-functional louver blade of arbitrary shape constitutes can reach the retro-reflection of control direct sunlight and the optimization of deflection import volume according to conversion in season and people's concrete needs; Keep very high perspective rate simultaneously; Satisfy people's the demand that exchanges with the vision of scenery outside window, for sun altitude H≤β
Ca '(β
Ca '=30 °~35 °) direct sunlight also can be at the retro-reflection and the deflection import volume that keep control direct sunlight under very high perspective rate (reaching about the 50% at least) situation; Compare with blinds sunshade light-conducting system in the past; Blinds system number of operations only needs 2 times in one day, has removed traditional blinds and has needed constantly to rotate the trouble that blinds adapts to the variation of sun altitude.