CN101457909A - LED leaded light strip apparatus and plane and barrel-shaped light source using same - Google Patents
LED leaded light strip apparatus and plane and barrel-shaped light source using same Download PDFInfo
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- CN101457909A CN101457909A CNA2008102164655A CN200810216465A CN101457909A CN 101457909 A CN101457909 A CN 101457909A CN A2008102164655 A CNA2008102164655 A CN A2008102164655A CN 200810216465 A CN200810216465 A CN 200810216465A CN 101457909 A CN101457909 A CN 101457909A
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Abstract
The invention relates to an LED light guide strip device as well as a plane light source and a bucket light source using the LED light guide bar device. A strip-typed light guide composed by light guiding material converts an LED point light source into a surface light source; the light guide is provided with a light-in face, a light guiding mesh point diffusing face, a light output face and a virtual mesh point face; the LED point light source is positioned on the light-in face, the minimum section of the light guide is a triangle, the light guiding mesh point diffusing face corresponds to two sides of the triangle and the light output face corresponds to the third side of the triangle; given that the LED point light source is provided with a round beam with a diameter of Phi, the value span of the side length H of the triangle corresponding to the light output face with respect to the diameter Phi of the LED point light source is 2.4Phi to 4.8Phi. The bucket light source comprises a cylinder tightly formed by light guide strips with the same structure and size in a surrounding and connecting way; the light-out face heads outwards to form the external surface of the cylinder. The plane light source comprises the light-out face and light guide strips matched and combined in parallel.
Description
Technical fieldThe present invention relates to a kind of LED leaded light strip device and use the planar light source and the barrel-shaped light source of this leaded light strip device.
Background technologyLED leaded light bar utilizes diffusion, reflection and the refraction principle of optics, and the LED spot light is converted to line source and area source, and the relation between the size of leaded light bar, angle, shape and the light source position all can influence the conversion efficiency of spot light.
Summary of the inventionThe objective of the invention is to the planar light source and the barrel-shaped light source that propose a kind of LED leaded light strip device of triangular-section and use this leaded light bar.
The invention discloses a kind of LED leaded light strip device, the light conductor of the strip of being made up of optical material converts the LED spot light to area source; Have leaded light site diffusingsurface, light gasing surface and incidence surface on the described light conductor; Described LED spot light is positioned on the incidence surface, is characterised in that, the smallest cross-sectional of described light conductor is a triangle, the corresponding described triangle of described leaded light site diffusingsurface both sides, the corresponding described leg-of-mutton another side of described light gasing surface; If described LED spot light has the circular light beam that diameter is Φ, the span of the length of side H of the corresponding light gasing surface of then described triangle is 2.4 Φ-4.8 Φ; Perhaps, establish described LED spot light and have the oval-shaped beam that major radius is h, the span of the length of side H of the corresponding light gasing surface of then described triangle is 4.0h-4.8h; Perhaps, establish described LED spot light and had center symmetry longest edge apart from being h
1Square or polygon light beam, the span of the length of side H of the corresponding light gasing surface of then described triangle is 4.8h
1-6.0h
1
This a kind of LED leaded light strip device disclosed by the invention also comprises following subordinate technical characterictic:
If the length of side length of the corresponding light gasing surface of described triangle is H, the length of side length of corresponding leaded light site diffusingsurface is b all, then has
The circular light beam of described LED spot light and is tangential on the intersection of described site diffusingsurface and described incidence surface on the symmetrical centre that is positioned at described triangular-section on the incidence surface.
The angle of described exiting surface and site face diffusingsurface is 45 degree, and the angle between the diffusingsurface of described site is 90 degree, the angle error scope is not more than ± and 5%.
The described light gasing surface of described light conductor is shaped to arc-shaped curved surface; Perhaps the described light gasing surface of described light conductor is shaped to three crossing planes.
The invention also discloses a kind of planar light source of the LED of use leaded light strip device, described leaded light strip device comprises the light conductor of the strip of being made up of optical material, and described light conductor converts the LED spot light to area source; Have leaded light site diffusingsurface, incidence surface and light gasing surface on the described light conductor; Described LED spot light is positioned on the incidence surface of described leaded light bar; The light gasing surface of described leaded light bar is parallel to be stitched together, and is combined into bigger exiting surface; The smallest cross-sectional of described light conductor is a triangle, corresponding described leg-of-mutton two limits of described leaded light site diffusingsurface, corresponding described leg-of-mutton another limit of described light gasing surface; If described LED spot light has the circular light beam that diameter is Φ, the span of the length of side H of the corresponding light gasing surface of then described triangle is 2.4 Φ-4.8 Φ; Perhaps, establish described LED spot light and have the oval-shaped beam that major radius is h, the span of the length of the length of side H of the corresponding light gasing surface of then described triangle is 4.0h-4.8h; Perhaps, establish described LED spot light and had center symmetry longest edge apart from being h
1Square or polygon light beam, the span of the length H of the length of side of the corresponding light gasing surface of then described triangle is 4.8h
1-6.0h
1Perhaps, the described light gasing surface of described light conductor is shaped to three crossing planes.
The invention also discloses a kind of barrel-shaped light source of the LED of use leaded light strip device, described leaded light strip device comprises the light conductor of the strip of being made up of optical material, and described light conductor converts the LED spot light to area source; Have leaded light site diffusingsurface, incidence surface and light gasing surface on the described light conductor; Described LED spot light is positioned on the incidence surface; Described barrel-shaped light source comprises 4 or 4 described leaded light bar and closely continuous cylinders that surround of described leaded light bar that above physical dimension is identical, and described light gasing surface outwards forms the outer surface of described cylinder; The smallest cross-sectional of described light conductor is a triangle, corresponding described leg-of-mutton two limits of described leaded light site diffusingsurface, the corresponding described leg-of-mutton another side of described light gasing surface; If described LED spot light has the circular light beam that diameter is Φ, the span of the length of side H of the corresponding light gasing surface of then described triangle is 2.4 Φ-4.8 Φ; Perhaps, establish described LED spot light and have the oval-shaped beam that major radius is h, the span of the length of side H of the corresponding light gasing surface of then described triangle is 4.0h-4.8h; Perhaps, establish described LED spot light and had center symmetry longest edge apart from being h
1Square or polygon light beam, the span of the length of side H of the corresponding light gasing surface of then described triangle is 4.8h
1-6.0h
1The described light gasing surface of described light conductor is shaped to the curved surface of radian; Perhaps described light gasing surface is shaped to three crossing planes.。
The structure of leaded light strip device of the present invention and the planar light source and the barrel-shaped light source that use this device have been saved optical material, need not the auxiliary heat dissipation sheet, and the overall structure cost is low.The optimal proportion of the size of light source and light conductor concerns, can reduce the usage quantity of light source, saves power consumption, thereby the conversion ratio of luminous flux of light source is brought up to 90%.
Description of drawings
Fig. 1, Fig. 2 and Fig. 3 be among the present invention dimension of light source and with the proportionate relationship schematic diagram of the length of side of exiting surface.
Fig. 4 is the length of side H of exiting surface and the size relationship of site diffusingsurface.
Fig. 5 is that the position of light source of the present invention and site diffusingsurface concerns schematic diagram.
Fig. 6 (1) and Fig. 6 (2) are that exiting surface is curved surface or crossing multilevel structural representation among the present invention.
Fig. 7 is that the present invention is the schematic diagram that improves the brightness size reduction.
Fig. 8 is a light-guiding strip structure size schematic diagram of the present invention.
Fig. 9 (1), Fig. 9 (2) and Fig. 9 (3) are torch structural representations of the present invention.
Figure 10 (1) and Figure 10 (2) are flat light source structure schematic diagrames of the present invention.
Figure 11 (1), Figure 11 (2), Figure 11 (3) and Figure 11 (4) are bucket light-source structure schematic diagrames of the present invention.
The specific embodimentBelow in conjunction with the drawings and specific embodiments the present invention is described in further details.
The present invention converts the LED spot light to line source or area source, according to diffusion of light, reflection and refraction principle, improves the conversion efficiency of spot light to greatest extent, can be applied in lighting field and LCD backlight module.
The LED spot light is the optical semiconductor product-derived of present comparative maturity, is formed by single-chip or combined chip encapsulation, and exiting surface is the light beam that certain angle is arranged, because its characteristic energy-conservation and environmental protection just progressively substitutes existing light source product.
LGP (bar) is the product of being made by optical grade PMMA or PC material, can convert spot light to line source or area source.Have one or more leaded light site diffusingsurface on the LGP (bar), on the diffusingsurface of leaded light site, have according to certain rules, the diffusion point that printing or engraving mode generate with injection moulding.The reflection unit that fits tightly site diffusingsurface part fully is called reflecting surface.Also have one or more light gasing surface on the LGP (bar), also claim exiting surface, spot light after the conversion of diffusingsurface and reflecting surface from the light gasing surface bright dipping.
The virtual node face is meant that LGP (bar) goes out the smallest cross-sectional of optical range.
The vertical cross-section of virtual node face and diffusingsurface is an incidence surface.
When virtual node face and parallel cut thereof are del, if light source circular light beam diameter is Φ, the length of side that exiting surface and incidence surface intersect is (the long limit of triangle) H, be the proportionate relationship schematic diagram of the long limit H of the corresponding exiting surface of light source circular light beam diameter Φ of the present invention and triangle virtual node face as shown in Figure 1, have:
H＝4.8Φ
If the major radius of light source oval-shaped beam is h, be the proportionate relationship schematic diagram of light source oval-shaped beam major radius of the present invention and exiting surface length of side H as shown in Figure 2, have:
H＝4.0h~4.8h
As shown in Figure 3, if light source is square or polygon (containing 5 limits more than 5 limits), the center of the crossing symmetry longest edge of establishing light source is apart from h
1, then the center of the crossing symmetry longest edge of light source is apart from h
1Proportionate relationship with H:
H＝4.8h
1~6.0h
1
As shown in Figure 4, establishing the site diffusion is non-curved surface, and the virtual node face is a del, and the length of side of two corresponding site diffusingsurfaces all is b, then the relation of exiting surface length of side H and site diffusingsurface side length b:
Fig. 5 is that the position of light source of the present invention and site diffusingsurface concerns schematic diagram.As shown in Figure 5, when incidence surface was del, light source was positioned on the incidence surface symmetrical centre, and was tangential on the intersection of site diffusingsurface and incidence surface.
It is quite ripe technically that mode is designed and made in the site of LGP (bar), but use specific to product, in the exploitation such as the leaded light bar, for reaching the requirement of effective light diffusivity to greatest extent, no matter which kind of makes mode, and the dot shape design is with polygon (more than three limits) combination or other irregular the bests that are combined as, the shape of site, size, thickness and the degree of depth, and different spacings and spread pattern belong to the ordinary skill category, and those skilled in the art can control as required.
As shown in Figure 6, the shape of the exiting surface of leaded light bar can change according to the requirement of light output angle, and leg-of-mutton virtual node face, exiting surface are supported 180 degree bright dippings.When bright dipping being had the requiring of angle control, exiting surface can be curved surface or polygon.Be depicted as the leaded light bar that exiting surface is an arc-shaped curved surface as Fig. 6 (1), its cross sectional shape is to splice arc on the triangle, and arc-shaped curved surface converges effect to bright dipping.Leaded light bar shown in Fig. 6 (2) has a plurality of optical planes that go out, and its cross sectional shape is a kind of pentagon, is equivalent to overlap trapezoidal forming of splicing on the long limit of triangle.
In actual applications, single light source may not satisfy the design brightness requirement, can consider to increase quantity of light source, and light source center is positioned on the symmetrical centre of site diffusingsurface in principle.In order to save the light source cost, can not increase quantity of light source and, as shown in Figure 7, be the schematic diagram that reduces leaded light bar size in proportion according to the size of corresponding proportion reduction striation, only be example here with the sphere shape light, all the other are analogized according to identical reduction ratio.Its ratio reduction scope:
H＝2.4Φ—4.8Φ
The size of light beam of light source is actual represents light source luminescent district efficient frontier size, and the actual light source product has not luminous zone part, in actual applications, guarantee that whole light source is in the scope of the cross section of virtual node face.The end face of leaded light bar is exactly an incidence surface, and light source is positioned on the incidence surface.
Be light-guiding strip structure size schematic diagram of the present invention as shown in Figure 8, cross sectional shape is a del, its exiting surface and site face angle a are 45 degree, two site face angle b are 90 degree, consider the refraction angle of deviation and the secondary conversion loss of light, dimension scale and each angular range should be controlled at respectively ± 5% scope.
Light source and site face are tangent in theory, refraction that it caused and secondary conversion loss are minimum, in the practical application, because of the light source profile may be non-circular, so after dimension scale is determined, facing the title central point near the site with the light source luminescent central point in principle is the optimum position, and light source (single/many) also belongs to this programme and discloses scope in other position.
The present invention can be applied to the illuminating product field, and the leaded light bar can substitute the torch illuminating product, shown in Fig. 9 (1), good Fig. 9 of Fig. 9 (2) (3), is torch structural representation of the present invention.Being a kind of torch structure with a plurality of exiting surfaces shown in Fig. 9 (1), is a kind of torch structure of arc exiting surface shown in Fig. 9 (3), and Fig. 9 (2) is depicted as a kind of torch structure with planar light extracting face.
The present invention also can be applied to backlight module, and the structure of illuminated by surface light source and backlight module has the parallel splicing of exiting surface of the leaded light bar of triangular-section shown in Figure 10 (1) shown in Figure 10 (1) and Figure 10 (2), be combined into a bigger exiting surface; Have the parallel splicing of leaded light bar of a plurality of exiting surfaces shown in Figure 10 (2), make exiting surface in the same side, leaded light is dispersed face at opposite side, thereby forms a bigger exiting surface.
The present invention also can be used for a barrel light illumination, be bucket light-source structure schematic diagram of the present invention as shown in figure 11, the leaded light of the leaded light bar that 4 or 4 above physical dimensions are identical is dispersed towards interior closely linking to each other surrounding cylinder, the light-emitting area of each leaded light bar outwards forms the outer surface of cylindricality, becomes the cylindrical light emitting body.
It shown in Figure 11 (1) structural representation with bucket light source that the leaded light bar of polygonal cross-section forms; It shown in Figure 11 (2) structural representation of the bucket light source formed of the leaded light bar of triangular-section; It shown in Figure 11 (3) structural representation with bucket light source that the leaded light bar of arc exiting surface forms; It shown in Figure 11 (4) structural representation of the bucket light source formed of the leaded light bar of the arc exiting surface of another kind of radian.
The such scheme of introduction of the present invention all is that the end face with the leaded light bar is an incidence surface, can be only at an end light inlet of striation, also can also belong to the category of the present invention's protection as required at two end faces of striation light inlets simultaneously.
The incidence surface of the present invention of above-mentioned introduction is all described with minute surface, and for eliminating the light source bright spot or increasing the light inlet angle, it is less than normal to remedy the light source incidence angle, can adopt the general v-CUT groove technology in this area to incidence surface.
The length of the unqualified leaded light bar of the present invention of above-mentioned introduction product.
The virtual node face of the present invention of above-mentioned introduction is with vertical with the site diffusingsurface.
The present invention also may be used in other field, as long as the basic design standard of this programme is adopted in this field, all belongs to this programme application category.
Best illumination replacement scheme: be light source at present with LED, its technology maturity has satisfied the requirement of illumination application substantially, to progressively substitute this field product, existing substitute products are all based on the direct-injection type light source, on light source cost and maintenance cost than higher, can't carry out the marketization and promote, disclosed originating party case reduces light source cost and maintenance cost, can satisfy market-oriented requirement.
Because the present invention discloses the optimal proportion relation of dimension of light source and virtual node face size, usage quantity that can MIN reduction light source, thus save power consumption to greatest extent.
Because the present invention discloses light source and virtual node face optimum shape ratio and position relation, thereby improve the conversion ratio to 90% of luminous flux of light source.
Light-guiding strip structure of the present invention has been saved auxiliary heat dissipation sheet and optical material, and the overall structure cost is low.
Claims (9)
1. LED leaded light strip device, the light conductor of the strip of being made up of optical material converts the LED spot light to area source; Have leaded light site diffusingsurface, light gasing surface and incidence surface on the described light conductor; Described LED spot light is positioned on the incidence surface, it is characterized in that, the smallest cross-sectional of described light conductor is a triangle, the corresponding described triangle of described leaded light site diffusingsurface both sides, the corresponding described leg-of-mutton another side of described light gasing surface; If described LED spot light has the circular light beam that diameter is Φ, the span of the length of side H of the corresponding light gasing surface of then described triangle is 2.4 Φ-4.8 Φ; Perhaps, establish described LED spot light and have the oval-shaped beam that major radius is h, the span of the length of side H of the corresponding light gasing surface of then described triangle is 4.0h-4.8h; Perhaps, establish described LED spot light and had center symmetry longest edge apart from being h
1Square or polygon light beam, the span of the length of side H of the corresponding light gasing surface of then described triangle is 4.8h
1-6.0h
1
2. LED leaded light strip device according to claim 1 is characterized in that, the length of side length of establishing the corresponding light gasing surface of described triangle is H, and the length of side length of corresponding leaded light site diffusingsurface is b all, then has
3. LED leaded light strip device according to claim 2 is characterized in that, the circular light beam of described LED spot light and is tangential on the intersection of described site diffusingsurface and described incidence surface on the symmetrical centre that is positioned at described triangular-section on the incidence surface.
4. LED leaded light strip device according to claim 1 is characterized in that, the angle of described exiting surface and site face diffusingsurface is 45 degree, and the angle between the diffusingsurface of described site is 90 degree, the angle error scope is not more than ± and 5%.
5. according to described any one LED leaded light strip device of claim 1 to 4, it is characterized in that the described light gasing surface of described light conductor is shaped to arc-shaped curved surface; Perhaps the described light gasing surface of described light conductor is shaped to three crossing planes.
6. planar light source that uses LED leaded light strip device, described leaded light strip device comprises the light conductor of the strip of being made up of optical material, described light conductor converts the LED spot light to area source; Have leaded light site diffusingsurface, incidence surface and light gasing surface on the described light conductor; Described LED spot light is positioned on the incidence surface of described leaded light bar; The light gasing surface of described leaded light bar is parallel to be stitched together, and is combined into bigger exiting surface; It is characterized in that the smallest cross-sectional of described light conductor is a triangle, corresponding described leg-of-mutton two limits of described leaded light site diffusingsurface, corresponding described leg-of-mutton another limit of described light gasing surface; If described LED spot light has the circular light beam that diameter is Φ, the span of the length of side H of the corresponding light gasing surface of then described triangle is 2.4 Φ-4.8 Φ; Perhaps, establish described LED spot light and have the oval-shaped beam that major radius is h, the span of the length of the length of side H of the corresponding light gasing surface of then described triangle is 4.0h-4.8h; Perhaps, establish described LED spot light and had center symmetry longest edge apart from being h
1Square or polygon light beam, the span of the length H of the length of side of the corresponding light gasing surface of then described triangle is 4.8h
1-6.0h
1
7. the planar light source that LED leaded light strip device according to claim 6 is formed is characterized in that the described light gasing surface of described light conductor is shaped to three crossing planes.
8. barrel-shaped light source that uses LED leaded light strip device, described leaded light strip device comprises the light conductor of the strip of being made up of optical material, described light conductor converts the LED spot light to area source; Have leaded light site diffusingsurface, incidence surface and light gasing surface on the described light conductor; Described LED spot light is positioned on the incidence surface; It is characterized in that described barrel-shaped light source comprises 4 or 4 described leaded light bar and closely continuous cylinders that surround of described leaded light bar that above physical dimension is identical, described light gasing surface outwards forms the outer surface of described cylinder; The smallest cross-sectional of described light conductor is a triangle, corresponding described leg-of-mutton two limits of described leaded light site diffusingsurface, the corresponding described leg-of-mutton another side of described light gasing surface; If described LED spot light has the circular light beam that diameter is Φ, the span of the length of side H of the corresponding light gasing surface of then described triangle is 2.4 Φ-4.8 Φ; Perhaps, establish described LED spot light and have the oval-shaped beam that major radius is h, the span of the length of side H of the corresponding light gasing surface of then described triangle is 4.0h-4.8h; Perhaps, establish described LED spot light and had center symmetry longest edge apart from being h
1Square or polygon light beam, the span of the length of side H of the corresponding light gasing surface of then described triangle is 4.8h
1-6.0h
1
9. the barrel-shaped light source that LED leaded light strip device according to claim 8 is formed is characterized in that the described light gasing surface of described light conductor is shaped to the curved surface of radian; Perhaps described light gasing surface is shaped to three crossing planes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102164655A CN101457909A (en) | 2008-09-28 | 2008-09-28 | LED leaded light strip apparatus and plane and barrel-shaped light source using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102164655A CN101457909A (en) | 2008-09-28 | 2008-09-28 | LED leaded light strip apparatus and plane and barrel-shaped light source using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101457909A true CN101457909A (en) | 2009-06-17 |
Family
ID=40768928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102164655A Pending CN101457909A (en) | 2008-09-28 | 2008-09-28 | LED leaded light strip apparatus and plane and barrel-shaped light source using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101457909A (en) |
-
2008
- 2008-09-28 CN CNA2008102164655A patent/CN101457909A/en active Pending
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Open date: 20090617 |