CN206330086U - LED total reflection lens and LED line light source - Google Patents

Abstract

The utility model is related to a kind of LED total reflection lens and LED line light source, the lens are integral type polyhedron, its body profile is by a cuboid and is fitted in the equal in magnitude of cuboid forward, central part, two 180 degree semicircular platforms up and down that bottom surface is fitted completely are bonded, the upper bottom surface of the two halves frustum of a cone is concordant with cuboid top surface and bottom surface respectively, left and right respectively sets the fillet surface of a fully reflecting surface type before cuboid, polyhedron top surface and bottom center are respectively equipped with plane of light incidence and reflector type inner sunken face relatively, refraction hole is additionally provided with cuboid, one or more punched-type fully reflecting surfaces are each provided between refraction hole and the fillet surface of left and right two, it is beam projecting face behind cuboid.The lens of the present utility model can evenly distribute the LED light line of lambert's light emitting species the uniform linear visual effect of realization, and the efficiency of light energy utilization is high, and the LED line light source can realize longer length and luminous uniform linear illumination effect with less number LED.

Description

LED total reflection lens and LED line light source

Technical field

The utility model is related to a kind of LED total reflection lens and LED line light source.

Background technology

LED life length, energy consumption are low and production technology process is increasingly ripe, can mass produce supply.At present in automobile It is widely used in illumination and decoration, highway lighting, projector and indoor and outdoor lighting decoration.Due to most of routine LED's The characteristics of luminescence is symmetrical Lambertian radiation, it is impossible to meet the optical requirement of various occasions.In order to meet the light efficiency of various occasions and match somebody with somebody Light requirement, improves the performance of system, it is necessary to LED be accurately controlled the secondary optical design of light distribution, rational point The luminous energy sent with LED chip.

It is general that luminous intensity distribution is carried out using the reflectors such as reflecting surface or reflector of aluminizing to LED secondary optical designs, however it is logical Luminous energy can not efficiently and uniformly be distributed by crossing reflector, and its effect is that the light intensity of LED light direction of principal axis is big, and surrounding light intensity gradually drops It is low.

Also have and luminous energy distribution is carried out to LED by the transmission-type such as convex lens refractile body, but this mode is to LED luminous energy Utilization rate is relatively low, and the big light of lighting angle can not be utilized, and controls the limited in one's ability of light.

Also have and luminous intensity distribution again is collimated to LED light line by being totally reflected (TRI) concentrator, this TRI lens are generally around LED light The circular rotating body of axle, is square occasion for some light-emitting areas or light distribution requirements, then needs to be cut rotary body, It so frequently can lead to capacity usage ratio decline.

Automobile tail light, Brake lamp, daytime running lamps, front position lamp and some illuminators and ornament lamp, it is desirable to Neng Goushi The light source now linearly lighted, realizes the linear effects of uniformly light-emitting, while to meet certain light distribution requirements.Realize at present linear The scheme of effect has following several：

Light guide linear light sorurce, as shown in figure 1, LED light source 1 is located at one end of photoconductive tube 2, light enters after photoconductive tube, Inner full-reflection is propagated until the other end of light guide, in order to obtain linear illumination effect, adds light guide at the back side of light guide exiting surface The optical texture such as tooth 3 or micro-structural, the effect of linear light sorurce is realized by total reflection.The efficiency of light energy utilization of the light guide scheme It is low, general only 25% or so, in order to reach big light intensity requirement, it is desirable to which single LEDs power is very big, to whole optical system Heat dissipation design require very high, longer light guide, mould is larger, costly, and design and difficulty of processing are very big, and micro- knot Structure and light guide tooth are poor to the control ability of luminous intensity distribution.

Another scheme is the light bar scheme of the closeer distribution of plurality of LEDs, is matched somebody with somebody as shown in Fig. 2 the direct projection of plurality of LEDs 1 is passed through Light microscopic 4 (can be transparent PC, transparent PMMA, or be scattering material), intersected by the light of adjacent LED, realized continuously Even illumination effect.Such a conceptual design is simple, easy for installation but to obtain more uniform linear light sorurce, and longer is linear The LED number that light source then needs is very more, because LED number is more, can increase considerably the cost of system.

Another scheme is to use traditional TIR (total reflection) lens, and such as Fig. 3 tradition LED concentrator linear light sorurces show Shown in being intended to, plurality of LEDs 1 and multiple TIR lens 5 cooperatively form linear illumination effect, this scheme using LED number also compared with It is many.

Based on above situation, at present in the solution of the existing linear improvement of visual effect that can realize uniformly light-emitting, do not have also Have light easily controllable, and using LED number it is less in the case of just can obtain than light guide bar or the longer linear effects of LED light bar Solution.

The content of the invention

In order to solve the above mentioned problem of prior art, the utility model provides a kind of LED total reflection lens and LED line light Source, the LED total reflection lens can evenly distribute the LED light line of lambert's light emitting species the uniform linear visual effect of realization, And the efficiency of light energy utilization is higher than light guide techniques, the LED line light source being made up of its participation can be realized more with the LED of less number Length and luminous uniform linear illumination effect.

Main technical schemes of the present utility model have：

A kind of LED total reflection lens, are the polyhedron of integral type, its body profile is by a cuboid and positioned at the cuboid Two 180 degree semicircular platforms up and down that equal in magnitude, the bottom surface of forward, central part are fitted completely are bonded, the 180 degree half The fore-and-aft plane of the frustum of a cone with fitted before the cuboid and left and right without departing from the cuboid before, two up and down The upper bottom surface of the 180 degree semicircular platforms is concordant with the top surface of the cuboid and bottom surface respectively, and collectively forms respectively described Polyhedral top surface and bottom surface, plain line and the bottom surface of the 180 degree semicircular platforms are in 45 degree of angles, the left front of the cuboid Be arranged to fillet surface at the seamed edge of two scripts in right front, the fillet surface is the curved surface cylinder perpendicular to top surface, it is described fall Edged surface is fully reflecting surface, and the center of circle is in the upper bottom surface center on polyhedral top surface using the corresponding 180 degree semicircular platforms A border circular areas be set to plane of light incidence, the plane of incidence be plane or rotationally symmetrical convex outward, the polyhedron Bottom surface on using the upper bottom surface center of the corresponding 180 degree semicircular platforms as the center of circle, using upper bottom surface radius as the circle of radius Region is arranged to the rotationally symmetrical inner sunken face of central point depression, and the inner sunken face is behind fully reflecting surface, the cuboid For beam projecting face, the cuboid is provided with the refraction hole of vertical insertion, and the refraction hole position is in the 180 degree semicircular platforms Rear, the total reflection of one or more vertical insertions is each provided between described two fillet surfaces in refraction hole and left and right Hole, the hole wall of the perforation that is all-trans is surrounded by multiple right cylinder faces, and one of right cylinder face is fully reflecting surface.

The face type of the inner sunken face is preferably capable making into polyhedral light existing by the convex outward Total reflection occurs thereon and reflection light is in the face type of horizontal plane.

It can be single curved surface cylinder or many to surround described remaining cylinder beyond fully reflecting surface that is all-trans in the right cylinder face of perforation The compound pier areal that individual cylinder is connected in sequence, the compound pier areal is made up of curved surface cylinder and/or plane cylinder；The refraction Hole can be cylindrical hole, oval post holes or the hole surrounded by multiple right cylinder faces, when the refraction hole is by multiple right cylinder faces During the hole surrounded, the right cylinder face for surrounding the refraction hole is curved surface cylinder and/or plane cylinder.

The hole wall in the refraction hole can be surrounded by four right cylinder faces all around, wherein preceding cylinder can be for middle part backward Recessed cylinder, rear cylinder is the cylinder of the plane that left and right extends or middle part to lordosis, what left cylinder and right cylinder extended for before and after Plane.

The horizontal cross sectional geometry of the curved surface cylinder can be circular arc or parabola, can also be other according to design needs Various free curves.

The refraction hole is preferably bilateral symmetry, and ymmetry center plane passes through the axis of the 180 degree semicircular platforms.

Whole perforation preferably symmetrical distribution of being all-trans, naturally it is also possible in mal-distribution, when left and right not When symmetrical, the total reflection hole number of the left and right sides can it is relative or, when quantity is not waited, the side more than quantity Preferably comprise the symmetrical perforation that is all-trans of all perforations that are all-trans of the side few with quantity, the symmetrical symmetrical centre Plane passes through the axis of the 180 degree semicircular platforms, and in other words, the symmetrical central plane with the refraction hole is same Plane.

Further, the polyhedron is preferably bilateral symmetry, and ymmetry center plane passes through the 180 degree semicircle The axis of frustum.

Polyhedral material of main part can be glass, PC or PMMA.

The beam projecting face is plane or curved surface, and decorative pattern or micro-structural can be provided with or without thereon.

As optimal technical scheme, the axis using the 180 degree semicircular platforms is common axis, and the light in the refraction hole enters Penetrate face, the fully reflecting surface of the perforation that is all-trans and the fillet surface each corresponding corner region it is continuous successively and they successively The wedge angle angle of the corner region constituted after splicing is 180 degree.

As further optimal technical scheme, on fore-and-aft direction, the light entrance face in the refraction hole, each is described complete A side in the fully reflecting surface of reflection hole and each described fillet surface in two adjacent sides rearward does not just block a forward side.

A kind of LED line light source, including one or more LED line light source cells, each LED line light source cell include one LEDs and any one foregoing LED total reflection lens, it is saturating that the LED is arranged on the corresponding LED total reflections The top of the plane of light incidence of mirror, the light-emitting area of the LED is towards the plane of light incidence, when the LED line light source cell is When multiple, described LED total reflection lens or so are arranged successively.

The beneficial effects of the utility model are：

The lens have more light refraction and total reflection structure, LED light line are carried out by different structures multiple Collect, collimate or diffusion, reallocation, the LED light line of lambert's light emitting species can be evenly distributed to the uniform linearly vision of realization Effect, and the efficiency of light energy utilization can reach more than 85%, far above the 25% of light guide techniques.

Lens body of the present utility model is rational in infrastructure, and refraction and total reflection structure can freely change and realize LED light line Freely distribute, the LED light line that lambert lights is uniformly distributed and realizes longer linear light sorurce effect.

Change of the total reflection lens of the present utility model by reflecting and being totally reflected structure coordinates, and can realize LED light line Collimation outgoing, LED light line can be spread on demand again.Both Automobile can be can apply to again as a kind of LED collimation device Functional light intensity such as lamp needs the occasion distributed according to need.

Compared with light guide scheme, processing cost and assembly difficulty are reduced, and capacity usage ratio is largely increased.

This total reflection lens is compared with plurality of LEDs dense distribution scheme and tradition TIR (total reflection) lens arrangement, using more LED few number realizes the linear light sorurce effect of equal length, significantly reduces cost.

Brief description of the drawings

Fig. 1 is the schematic diagram of light guide type linear light sorurce；

Fig. 2 is the schematic diagram of the light bar formula linear light sorurce of the closeer distributions of LED；

Fig. 3 is the schematic diagram of tradition LED lenticular linear light sources；

Fig. 4 is that a LED line light source cell of the present utility model (corresponds to the LED total reflection lens and a LEDs Combination) structural representation；

Fig. 5 is Fig. 4 top view；

Fig. 6 is Fig. 5 A-A sectional drawings；

Fig. 7 propagates schematic diagram for Fig. 5 A-A sections glazed thread；

Fig. 8 is Fig. 4 upward view；

Fig. 9 is Fig. 4 front view；

Figure 10 is Fig. 9 B-B sectional drawings；

Figure 11 propagates schematic diagram for Fig. 9 B-B sections glazed thread；

Figure 12 is the side view of the utility model lens；

Figure 13 is the structural representation of second of embodiment of LED total reflection lens of the present utility model；

Figure 14 is the structural representation of the third embodiment of LED total reflection lens of the present utility model；

Figure 15 is a kind of structural representation of embodiment of LED line light source of the present utility model.

Embodiment

It is the polyhedron of integral type the utility model discloses a kind of LED total reflection lens (referred to as lens), such as Fig. 4- Shown in 14, its body profile is fitted completely by a cuboid I and positioned at equal in magnitude, the bottom surface of the cuboid forward, central part Two 180 degree semicircular platforms II, III are bonded up and down.The body that two 180 degree semicircular platforms are overlapped into is similar half Spindle.Any of which portion that so-called 180 degree semicircular platforms refer to obtain after the arbitrary plane cutting of frustum of a cone axis Point, the arbitrary plane can be described as fore-and-aft plane.The fore-and-aft plane of the 180 degree semicircular platforms before the cuboid with fitting And left and right without departing from the cuboid before.Up and down the upper bottom surface of two 180 degree semicircular platforms respectively with the length The top surface of cube is concordant with bottom surface, and collectively forms polyhedral top surface and bottom surface respectively.The 180 degree semicircular platforms Plain line is with bottom surface in 45 degree of angles.The left front of the cuboid and the script of right front two should be that the position of seamed edge is arranged to Fillet surface 11, the fillet surface is the curved surface cylinder perpendicular to top surface, and the fillet surface is fully reflecting surface, polyhedral top Light incidence is set to using a border circular areas in upper bottom surface center as the center of circle of the corresponding 180 degree semicircular platforms II on face Face 7, the plane of light incidence be plane or rotationally symmetrical convex outward, here so-called evagination refer to protrude the polyhedron More than top surface, the diameter of the border circular areas is less than the upper bottom surface diameter of the 180 degree semicircular platforms.On polyhedral bottom surface Set using border circular areas of the upper bottom surface center of the corresponding 180 degree semicircular platforms III as the center of circle, using upper bottom surface radius as radius The rotationally symmetrical inner sunken face 8 of central point depression is set to, the inner sunken face is fully reflecting surface, for receiving through the convex outward Inject polyhedral whole light.It is beam projecting face 13 behind the cuboid.The cuboid is provided with vertical The refraction hole 10 of insertion, the refraction hole position is in the rear of the 180 degree semicircular platforms, described in the refraction hole and left and right two The perforation 12 that is all-trans of one or more vertical insertions is each provided between fillet surface, the hole wall of the perforation that is all-trans is by multiple right cylinders Face is surrounded, and one of right cylinder face is fully reflecting surface, such as 12-1,12-2,12-3,12-4,12-5,12-6.Here so-called right cylinder Face refers to the cylinder vertical with polyhedral top surface (or bottom surface), according to the definition of cylinder, it can be understood as is one and hangs down The straight dynamic straight line in polyhedral top surface (or bottom surface) is along the boning out on top surface (or bottom surface) or determines oriented parallel shifting Dynamic formed face.When for boning out, the cylinder formed is plane cylinder, when to determine curve, and the cylinder formed is Curved surface cylinder.The horizontal cross sectional geometry in right cylinder face actually just reflects boning out or determines the shape of curve.

The face type and arranged direction for the fully reflecting surface being all-trans described in each on perforation are can to make and the 180 degree half-conical The axis of platform is intersecting and total reflection occurs for light of glancing incidence and reflection light generally towards rear face type and arranged direction. The so-called direction for being approximately towards rear both including rearward direct projection and including with respect to the direction to left or right scope at an angle The direction of interior deflection, to meet a variety of different design requirements, when the direction for direct projection backward, the perforation that is all-trans mainly rises To the effect of collimation.

The face type of the inner sunken face is can to make to enter polyhedral light all throwings by the convex outward It is mapped to thereon and occurs total reflection and face type of the reflection light in horizontal plane.So-called " indent " is polyhedral relative to described For bottom surface, that is, concave towards inside entity, do not limit the bumps of the curved surface face type.As shown in fig. 6, the face type of the inner sunken face If itself is to solid exterior dimpling using central point to the circular conical surface defined between surrounding circumferential edges as reference.

In use, towards the plane of light incidence and LED exiting surface is kept into certain distance with it, it is big that LED is projected Plane of light incidence described in some light directive, successively coordinates collection LED to go out by the plane of light incidence and the inner sunken face The light penetrated, and light is propagated at a certain angle in the lens.Ideally, by the plane of light incidence and interior The cooperation of concave curved surface, whole refracted light just uniformly projects the whole inner surface of the inner sunken face, then through described interior What concave curved surface progress was totally reflected and forms propagation along the horizontal plane, radiated centered on the axis of the 180 degree semicircular platforms to surrounding Light.Ordinary circumstance can realize above-mentioned reason substantially by plane of light incidence described in matched design and the face type of the inner sunken face Think situation.

Some parameters also size including the plane of light incidence, the LED light extractions considered is needed in the matched design Face size and LED and plane of light incidence distance, polyhedral height etc..

Shown in Fig. 7 in plane, the light after being totally reflected through the inner sunken face collimates propagation forward or backward.

In whole space, the inner sunken face collects the almost all light that is come in through the convex outward and to these Light is totally reflected, and the light after total reflection is propagated along the horizontal plane, the direction of propagation and the axis of the 180 degree semicircular platforms Intersect vertically, and be uniformly distributed centered on the axis to surrounding is radial, wherein reflection light is located at 180 angular regions backward Interior half light is directly propagated in the polyhedron, and reflection light is located at second half light in 180 angular regions forward Successively (two conical surfaces are fully reflecting surface to the conical surface 9 of the process 180 degree semicircular platforms II, III, pass through on the longitudinal cross-section of axis two Angle is 90 degree between the conical surface) total reflection after then as the angular region of directive rear 180 reflection light.It can be seen that, by two institutes After the conical surface is stated to the wherein total reflection of half light, whole light all light as the angular region of horizontal sheaf rear 180, and It is uniformly distributed in 180 degree angular region.

As shown in figure 11, the light of the angular region of horizontal sheaf rear 180 is broadly divided into three parts and is collected respectively, a part The light of angle is collected by the refraction hole, different according to the face type in the refraction hole, accurate by the light in the refraction hole The straight or propagation in the lens at a certain angle, depends primarily on the face type in the right cylinder face for surrounding the refraction hole, face type is not Together, the angle that the light projected from refraction hole is propagated in lens is also different；Be all-trans perforation described in another part light process Fully reflecting surface is collected；Remainder light is collected by the fillet surface, the fully reflecting surface and the chamfering of the perforation that is all-trans The face type in face, which is, can make received light occur total reflection and the face type of reflection light direct projection backward.The fillet surface is The curved surface cylinder of dimpling to outside entity.With the curved of the fully reflecting surface in the perforation that is all-trans described in left side or right side and the fillet surface Qu Fangxiang is similar, and such as bending direction in left side is to left front, and the bending direction of rear side is to right front.It is the refraction hole, described Being all-trans the fully reflecting surface and the fillet surface of perforation will be after the plane of light incidence, inner sunken face and two conical surface LED light line collects reallocation again.

Surround it is described be all-trans in the right cylinder face of perforation in addition to the fully reflecting surface, remaining cylinder is main to be all-trans described in being formed For the purpose of perforation, the compound pier areal that can be connected in sequence for single curved surface cylinder or multiple cylinders, the compound pier areal can To be made up of curved surface cylinder and/or plane cylinder.Remaining cylinder is two phases at a certain angle in embodiment of the present utility model The plane cylinder of friendship, such pore structure is the simplest.

The refraction hole can be cylindrical hole or oval post holes or the hole surrounded by multiple right cylinder faces, correspondingly, The right cylinder face for surrounding the refraction hole is curved surface cylinder and/or plane cylinder.

Shown in accompanying drawing, the hole wall in the refraction hole can be surrounded by four right cylinder faces all around, wherein during preceding cylinder is Portion's recessed cylinder backward, rear cylinder is the plane of left and right extension or middle part to the cylinder of lordosis, and left cylinder and right cylinder are front and rear The plane of extension.

The horizontal cross sectional geometry of the curved surface cylinder can be circular arc or parabola or other free curves.

Diagram do not reflect the left in hole described in be the same as Example or the described of right be all-trans perforation quantity it is different, can be with There are 1-3.In fact, because light refraction is totally reflected structurally variable, it is of the present utility model it is described be all-trans perforation can be according to list The size (mainly left and right width) of individual lens sets suitable number, can set more.List of the present utility model in theory Individual lens can realize 0mm to the uniformly light-emitting of indefinite length, i.e., the left and right width of the lens can be no limit for width in theory, Certainly, width is wider, it is necessary to set more perforations that are all-trans.Also, with by the axis of the 180 degree semicircular platforms The plane of front and rear extension be able to can not also be waited as line of demarcation, the width of the right and left with equal, and wider side is usually required The more perforation that is all-trans is set.

The left and right width of lens described in embodiment is illustrated up to 60mm, single LEDs coordinate the lens easily real The homogenous linear illumination effect that existing 60mm or so and brightness satisfaction are required.

The refraction hole is preferably bilateral symmetry, and ymmetry center plane passes through the axle of the 180 degree semicircular platforms Line.Now, whole perforations that are all-trans can also mal-distribution with symmetrical distribution.

As optimal technical scheme, whole symmetrical distributions of perforation of being all-trans, and ymmetry center plane passes through institute State the axis of 180 degree semicircular platforms.When the left-right asymmetry distribution of the perforation that is all-trans, the total reflection hole count of the left and right sides Amount can it is relative or, when quantity is not waited, the side more than quantity preferably comprises all total reflections of the side few with quantity The symmetrical perforation that is all-trans in hole, remaining is other perforations that are all-trans for not having left-right symmetric relation therewith, is led in this case Often left and right two fillet surfaces it is asymmetric, described cuboid or so identity distance from a distance from the ymmetry center plane also.

Further situation is that the polyhedron is bilateral symmetry, and ymmetry center plane passes through the 180 degree The axis of semicircular platforms.I.e. not only the refraction hole is bilateral symmetry, and the fillet surface and the perforation that is all-trans are also symmetrical Arrangement.

Lens of the present utility model have more light refraction, total reflection structure, and LED light line is entered by different structures Row is repeatedly collected, collimated or diffusion, reallocation, can be evenly distributed the LED light line of lambert's light emitting species and be realized uniform line Property visual effect, and the efficiency of light energy utilization is up to more than 85%, far above the efficiency of light energy utilization of light guide techniques.

Polyhedral material of main part can be the transparent materials such as glass, PC or PMMA, except plane of light incidence and light Outside exit facet, polyhedral outer surface is provided with coating.

The beam projecting face is plane or arbitrary surface, and different decorative pattern or micro-structural can be set to reach thereon Control the purpose with light distribution of emergent light.

As more satisfactory situation, as shown in figure 5, using the axis of the 180 degree semicircular platforms as common axis, it is described Reflect hole light entrance face (according to the design light path of the application, using the leftmost border point and rightmost circle point in the refraction hole as Boundary, is divided into front and rear two parts by the right cylinder face for surrounding the refraction hole, and the part being usually located above is the face for receiving light, can be with Referred to as light entrance face), the respective corresponding corner region (in such as Fig. 5 of the fully reflecting surface of the perforation that is all-trans and the fillet surface Region folded by adjacent two dotted lines) be preferably successively it is continuous (i.e. they in sharp corner one by one, be not spaced), and it Splice successively after the wedge angle angle of corner region that is constituted be just 180 degree.It so ensure that horizontal sheaf rear 180 Collected by one of the refraction hole, the fully reflecting surface for the perforation that is all-trans and fillet surface the light exhaustive of angular region.

Certainly, above-mentioned three kinds of structures can also each exist between corresponding corner region and partly overlap or be spaced.Deposit When overlapping, the corresponding light in overlapping region is only capable of in a certain structure that is irradiated in above-mentioned three kinds of structures, equivalent to make with The appropriate section of another structure for having overlapping relation shielded, but as long as lap is smaller, would not influence described The lighting effect of mirror.During in the presence of interval, have some light not by above-mentioned three kinds of structures it is any effectively collect and Control, can reach that lighting is continuous by described remaining the cylinder diffusing light described in perforation that is all-trans.

As further preferred scheme, on fore-and-aft direction, the light entrance face in the refraction hole, be all-trans described in each perforation Fully reflecting surface and each described fillet surface in, the side in two adjacent sides rearward does not just block a forward side.

In fact, it is perfect condition just not block, there is slight blocking simply to reduce energy utilization to a certain extent Rate, but lighting effect is not influenceed, still conform to design of the present utility model.

The invention also discloses a kind of LED line light source, as shown in Fig. 4-12 and 15, including one or more LED Linear light source unit, each LED line light source cell includes a LEDs and foregoing any one LED total reflection Lens, the LED is arranged on the top of the plane of light incidence of the corresponding LED total reflection lens, the light-emitting area court of the LED To the plane of light incidence, when the LED line light source cell is multiple, described LED total reflection lens or so are arranged successively, such as Shown in Figure 15.The two neighboring lens can be contacted and can not also contacted, specifically can be according to the line illumination effect to be reached Set.

In theory, by multiple lens combinations 0mm can also be realized to the uniformly light-emitting of indefinite length.Figure 15 is this One embodiment of the LED line light source of utility model combination.The lens are coordinated easily to realize 60mm's or so for single LEDs The situation of homogenous linear effect, the linear light sorurce of 300mm length typically only needs 5 LEDs to coordinate 5 lens.

The LED line light source of the present utility model can realize longer length and the uniform line that lights with the LED of less number Property illumination effect.

Top to bottom, left and right, front and rear, vertical, level alleged by the utility model are the definition under a Spatial Dimension, its Purpose is in order to express the relative position relation of corresponding construction, not to the restriction of absolute position.

Claims (10)

1. a kind of LED total reflection lens, it is characterised in that：It is the polyhedron of integral type, its body profile by a cuboid and The two 180 degree semicircular platforms up and down fitted completely positioned at equal in magnitude, the bottom surface of the cuboid forward, central part are bonded, The fore-and-aft plane of the 180 degree semicircular platforms with fitted before the cuboid and left and right without departing from the cuboid before Face, the upper bottom surface of two 180 degree semicircular platforms is concordant with the top surface of the cuboid and bottom surface respectively up and down, and respectively altogether With polyhedral top surface and bottom surface is constituted, plain line and the bottom surface of the 180 degree semicircular platforms are in 45 degree of angles, described rectangular It is arranged to fillet surface at the seamed edge of two scripts in left front and right front of body, the fillet surface is the curved surface post perpendicular to top surface Face, the fillet surface is with the upper bottom surface of the corresponding 180 degree semicircular platforms on fully reflecting surface, polyhedral top surface The heart is set to plane of light incidence for a border circular areas in the center of circle, and the plane of incidence is plane or rotationally symmetrical convex outward, institute State on polyhedral bottom surface using the upper bottom surface center of the corresponding 180 degree semicircular platforms as the center of circle, using upper bottom surface radius as half The border circular areas in footpath is arranged to the rotationally symmetrical inner sunken face of central point depression, and the inner sunken face is fully reflecting surface, described rectangular It is beam projecting face behind body, the cuboid is provided with the refraction hole of vertical insertion, and the refraction hole position is in the 180 degree One or more vertical insertions are each provided between the rear of semicircular platforms, described two fillet surfaces in refraction hole and left and right Be all-trans perforation, and the hole wall of the perforation that is all-trans is surrounded by multiple right cylinder faces, and one of right cylinder face is fully reflecting surface.

2. LED total reflection lens as claimed in claim 1, it is characterised in that：The face type of the inner sunken face be can make through Cross the face type that the convex outward is in horizontal plane into polyhedral light in generation total reflection thereon and reflection light.

3. LED total reflection lens as claimed in claim 2, it is characterised in that：Surround described be all-trans in the right cylinder face of perforation entirely Remaining cylinder is the compound pier areal that single curved surface cylinder or multiple cylinders are connected in sequence, the compound pier areal beyond reflecting surface It is made up of curved surface cylinder and/or plane cylinder；The refraction hole is cylindrical hole, oval post holes or surrounded by multiple right cylinder faces Hole, when the refraction hole is the hole surrounded by multiple right cylinder faces, surround the right cylinder face in the refraction hole for curved surface cylinder and/ Or plane cylinder.

4. LED total reflection lens as claimed in claim 3, it is characterised in that：The hole wall in the refraction hole is by all around four Individual right cylinder face is surrounded, wherein preceding cylinder is middle part recessed cylinder backward, and rear cylinder is the plane of left and right extension or middle part to lordosis Cylinder, left cylinder and right cylinder for front and rear extension plane.

5. LED total reflection lens as claimed in claim 3, it is characterised in that：The horizontal cross sectional geometry of the curved surface cylinder is Circular arc or parabola.

6. LED total reflection lens as claimed in claim 3, it is characterised in that：The refraction hole is bilateral symmetry, all The be all-trans symmetrical distribution of perforation or the mal-distribution, the free form surface when mal-distribution, the left and right sides it is described It is totally reflected hole number relative or unequal, when quantity is unequal, the side more than quantity is all comprising the side few with quantity The symmetrical perforation that is all-trans of the perforation that is all-trans, the symmetrical ymmetry center plane is by the 180 degree semicircular platforms Axis.

7. LED total reflection lens as claimed in claim 6, it is characterised in that：The polyhedron is bilateral symmetry, and right Central plane is claimed to pass through the axis of the 180 degree semicircular platforms.

8. the LED total reflection lens as described in claim 1,2,3,4,5,6 or 7, it is characterised in that：Its material of main part is glass Glass, PC or PMMA, the beam projecting face are plane or curved surface, which is provided with or be not provided with decorative pattern or micro-structural.

9. LED total reflection lens as claimed in claim 8, it is characterised in that：Using the axis of the 180 degree semicircular platforms as public affairs Coaxial line, the respective corresponding point of the light entrance face in the refraction hole, the fully reflecting surface of the perforation that is all-trans and the fillet surface Angular zone it is continuous successively and they splice successively after the wedge angle angle of corner region that is constituted be 180 degree, it is preferable that front and back Upwards, the light entrance face in the refraction hole, be all-trans described in each it is adjacent in the fully reflecting surface and each described fillet surface of perforation A side in two sides rearward does not just block a forward side.

10. a kind of LED line light source, it is characterised in that：Including one or more LED line light source cells, each LED line light source Unit includes a LEDs and the LED total reflection lens as described in claim 1,2,3,4,5,6,7,8 or 9, the LED The top of the plane of light incidence of the corresponding LED total reflection lens is arranged on, the light-emitting area of the LED enters towards the light Face is penetrated, when the LED line light source cell is multiple, described LED total reflection lens or so are arranged successively.