CN201106807Y - Light guide column - Google Patents

Abstract

The utility model relates to a light guide column, for the columnar body that has the conducted light nature, this light guide column has the light incident surface that is located one end or relative both ends to and be located the light plane of reflection and the light outgoing face of the radial relative both sides of this light guide column respectively, this incident surface, plane of reflection and outgoing face homogeneous body are equipped with optical structure, make this incident surface have the light source diffusion effect, this plane of reflection has the light source reflection effect, and this outgoing face has the even effect of deriving of light source.

Description

Light guide column

technical field

The utility model relates to a light guide column which can be applied to backlight modules, light boxes, lighting and the like.

Background technique

The use of backlight modules has become increasingly widespread. All monitors, LCD TVs, notebook computers, ... and other devices that require backlight to display images will use it. A general backlight module usually includes a light guide plate. The first side of the light guide plate is provided with a reflective sheet, and the opposite second side is provided with a plurality of optical films composed of diffusion sheets and prism sheets. The light source, the light emitted by the light source is projected into the side of the light guide plate, part of the light is reflected by the reflective sheet, and then emitted through the diffuser sheet and the prism sheet in sequence. In other words, the light guide element of the known backlight module is a flat light guide plate, but the backlight module manufactured by using the flat light guide plate has a large loss of light source, which may cause uneven brightness on the screen of the display device. Case.

Utility model content

The technical problem to be solved by the utility model is to overcome the above defects and provide a light guide column suitable for backlighting or lighting.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: provide a light guide column, which is a columnar body with the property of transmitting light, the light guide column has a light incident surface at one end or two opposite ends, and the The light reflection surface and the light exit surface on opposite sides of the light column in the radial direction, the incident surface, the reflection surface and the exit surface are uniformly provided with an optical structure, so that the incident surface has a light source diffusion effect, and the reflection surface has a light source reflection effect, and the The exit surface has the effect of uniformly exporting the light source.

The optical structure is to integrally form light spots or gratings such as V-shaped grooves, rhombuses, diamonds, circles, semicircles, squares, polygons, etc., or atomization treatment, etc. when manufacturing the light guide column. , in order to achieve the optical effect of refracting and reflecting light.

The utility model is arranged on the incident surface of the end surface of the light guide column, which can be a plane, or even form a cone shape on the periphery of the incident surface, and directly set the light source on the plane, or set a concave hole on the incident surface, and set the light source on the incident surface. In the concave hole, the bottom surface of the concave hole may also be provided with convex points that can condense the light, or concave points that can scatter the light.

The reflective surface provided on the side of the light guide column in the utility model can be two planes that are symmetrical and have an included angle with each other, or two convex arc surfaces that are symmetrical and have an included angle with each other, or an aspheric convex arc surface; It can be two concave arc surfaces that are symmetrical and have an included angle with each other, or an aspherical concave arc surface; it can also be a semi-cylindrical surface.

The reflective surface can be arranged in different forms of optical structure distribution according to the light source at one end or both ends of the light guide column; for example, when the light source is arranged at one end of the light guide column, the optical structure distribution of the reflective surface can be from the light source to the opposite It extends gradually and densely in the direction of the light source, so that the entire light guide column can obtain uniform brightness. When the light source is arranged at both ends of the light guide column, the distribution of the optical structure of the reflective surface can gradually extend densely from both ends of the light guide column to the middle direction, so that the entire light guide column can obtain uniform brightness.

The utility model is arranged on the outgoing surface of the side of the light guide column, which can be various possible shapes such as a convex arc surface, a concave arc surface, a plane, a curved surface, a polygonal surface, ... and the like.

The aforementioned structures of the incident surface, the reflective surface and the outgoing surface can be implemented in a permutation and combination manner.

Compared with the prior art, the utility model has the beneficial effects that: the light guide column of the utility model is used as a backlight or lighting application, the entire light guide column obtains uniform brightness, the loss of the light source is small, and the picture of the display device can be produced Even brightness.

Description of drawings

FIG. 1A is a schematic perspective view showing an embodiment of a light source provided on one side of the light guide column of the present invention;

Fig. 1B is a schematic perspective view showing an embodiment of light sources arranged on both sides of the light guide column of the present invention;

Fig. 2A is a partial plane sectional view showing that the incident surface of the utility model is a plane embodiment;

Fig. 2B is a partial plane sectional view of an embodiment showing that the incident surface of the present invention is provided with concave holes;

Fig. 2C is a partial plane sectional view showing that the utility model is provided with bumps on the bottom surface of the concave hole on the incident surface;

Fig. 2D is a partial plane sectional view showing that the utility model is provided with concave points on the bottom surface of the concave hole on the incident surface;

Fig. 2E is a partial plane cross-sectional view showing that the utility model forms a cone shape around the incident surface;

Fig. 2F is a partial plane cross-sectional view showing that the conical incident surface of the utility model is provided with concave holes on the periphery;

Fig. 2G is a partial plane cross-sectional view showing that the utility model has a convex point on the bottom surface of a conical incident surface concave hole formed on the periphery of the utility model;

Fig. 2H is a partial plane cross-sectional view showing that the bottom surface of the conical incident surface concave hole of the utility model is provided with concave points on the periphery;

Fig. 3A is a schematic end view of an embodiment showing that the reflective surface of the present invention is two symmetrical planes with an included angle;

Fig. 3B is a schematic end view showing that the reflective surface of the present invention is two symmetrical convex arc surfaces (or aspherical convex arc surfaces) with an included angle;

Fig. 3C is a schematic end view showing that the reflective surface of the present invention is two symmetrical concave arc surfaces (or aspherical concave arc surfaces) with an included angle;

Figure 3D is a schematic end view of an embodiment showing that the reflective surface of the present invention is a semi-cylindrical surface;

Fig. 4A is a schematic end view showing an embodiment in which the exit surface of the present invention is a convex arc surface (or an aspherical convex arc surface);

Fig. 4B is a schematic end view showing an embodiment in which the exit surface of the present invention is a concave arc surface (or an aspherical concave arc surface);

Fig. 4C is a schematic end view of an embodiment showing that the exit surface of the utility model is a plane;

Fig. 4D is a schematic end view of an embodiment showing that the exit surface of the present invention is a curved surface;

Fig. 4E is a schematic end view of an embodiment showing that the exit surface of the present invention is a polygonal surface;

FIG. 5 is a perspective view showing an embodiment of the light guide column of the present invention applied to a light box.

In the picture:

1 Light guide column 11 Incident surface 111 Concave hole 112 Convex point 113 Concave point 12 Reflective surface 13 Exit surface 2 Light source 3 Light box 4 Diffusion plate

Detailed ways

The implementation of the present utility model will be described in more detail below with reference to the accompanying drawings and symbolic symbols, so that those skilled in the art can implement it after reading this specification.

Fig. 1A is a schematic diagram showing an embodiment of a light guide column 1 of the present invention. The light guide column 1 is a columnar body made of a material with excellent light-transmitting properties, and its radial section can be in various shapes, and Fig. 1A only shows one of them A shape, the rest of the embodiments will be disclosed in the accompanying drawings. 1A shows that the light guide column 1 of the present invention has a light incident surface 11 located at one end or two opposite ends, and a light reflection surface 12 and a light exit surface 13 respectively located on the radially opposite sides of the light guide column 1. The incident surface 11. The reflective surface 12 and the outgoing surface 13 are integrally provided with an optical structure, so that the incident surface 11 has the effect of light source diffusion, the reflective surface 12 has the effect of light source reflection, and the exit surface 13 has the effect of uniformly deriving the light source. When the light emitted by the light source 2 enters the light guide column 1 from the incident surface 11, the light will be transmitted in the light guide column, part of the light will be emitted from the exit surface 13 in a straight line, and part of the light will be reflected by the reflective surface 12 and then from the exit surface. 13 shots.

Figure 1A shows an embodiment where the light source 2 is only provided at one end of the light guide column 1, because the transmission of light will attenuate with the extension of the distance, that is, the end of the light guide column 1 close to the light source 2 will be brighter, while the other end far away from the light source will be brighter. Therefore, in order to make the entire light guide column present a uniform brightness, the utility model makes a good and proper distribution on the optical structure of the reflective surface 12 . As shown in Figure 1A, when the incident surface 11 of the light guide column 1 is only at one end, the utility model gradually distributes the distribution of most light spots on the reflective surface 12 from one end close to the light source 2 to the other end far away, Compensate with dense reflection effect at the position where the light guide attenuation is more, so that the entire light guide column presents a uniform brightness. As shown in Figure 1B, when both ends of the light guide column 1 have incident surfaces 11, the distribution of most of the light spots on the reflective surface 12 is gradually denser from the two ends of the light guide column to the middle, so as to reduce the light guide attenuation. More positions are compensated with dense reflection effects, so that the entire light guide column presents a uniform brightness.

2A to 2H show some embodiments of the incident surface 11 of the light guide column of the present invention. Wherein, FIG. 2A shows that the incident surface 11 may be a plane, and the light source 2 is directly attached to the incident surface 11 to inject the light source into the light guide column 1 . Figure 2B shows that the utility model can drill or form a concave hole 111 on the original plane incident surface, and install the light source 2 in the concave hole 111, so that the light source 2 can inject light into the light guide column for conduction . Fig. 2C shows that the present invention can also integrally form a convex point 112 on the bottom surface of the aforementioned concave hole 111, and form a convex lens with a light-gathering function through the convex point 112, so that the light entering the light guide column is more concentrated. FIG. 2D shows that the present invention can integrally form a concave point 113 on the bottom surface of the aforementioned concave hole 111, and form a concave lens with astigmatism function through the concave point 113, so that the light entering the light guide column is relatively scattered. FIG. 2E shows that the utility model can form a cone on the periphery of the planar incident surface 11 , and the light source 2 is also directly arranged on the incident surface 11 . Even a concave hole 111 may be provided on the incident surface 11 formed in a tapered shape around the periphery, and then the light source 2 is disposed in the concave hole 111 (as shown in FIG. 2F ). Protruding points 112 (as shown in FIG. 2G ) or concave points 113 (as shown in FIG. 2H ) can also be further provided on the bottom surface of the aforementioned concave holes 111 to obtain the effect of concentrating or astigmatizing light.

3A to 3D show various embodiments of the reflective surface 12 of the present utility model, wherein, below the center line is the part of the reflective surface 12, so it is represented by a solid line; and above the center line is the part of the exit surface 13, because The exit surface 13 can be in any form, and it can be arranged and combined with the reflective surface, so it is represented by a dotted line. As shown in FIG. 3A , the reflective surface 12 may be two planes that are symmetrical and have an included angle with each other. It can also be two convex arc surfaces (or aspherical convex arc surfaces) that are symmetrical and have an included angle, as shown in FIG. 3B . It can also be two concave arc surfaces (or aspherical concave arc surfaces) that are symmetrical and have an included angle, as shown in FIG. 3C . It can also be a semi-cylindrical surface as shown in FIG. 3D.

4A to FIG. 4E show various embodiments of the exit surface 13 of the present utility model, wherein, above the center line is the part of the exit surface 13, so it is represented by a solid line; and below the center line is the part of the reflective surface 12, because The reflective surface 12 can be in any form, and it can be arranged and combined with the outgoing surface 13, so it is shown by a dotted line. As shown in FIG. 4A , the emitting surface 13 may be a convex arc surface (or an aspherical convex arc surface). It can also be a concave arc surface (or an aspheric concave arc surface) as shown in FIG. 4B . A plane as shown in Figure 4C is also possible. Curved surfaces as shown in Figure 4D are also possible. A polygonal face as shown in FIG. 4E is also possible.

FIG. 5 shows that the light guide column 1 of the present invention can be installed in the light box 4, and then the light box 4 is covered with a diffusion plate 5 or an optical film, so that the light guide column 1 can be illuminated in the light box.

The above descriptions are only used to explain the preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Therefore, any relevant modifications or changes made under the same spirit remain unchanged. Should be included in the category that the utility model intends to protect.

Claims (33)

1. A light guide column, characterized in that: it is a columnar body having the property of transmitting light, the light guide column has a light incident surface located at one end or two opposite ends, and light reflection surfaces and On the light exit surface, the incident surface, the reflective surface and the outgoing surface are uniformly provided with an optical structure, so that the incident surface has a light source diffusion effect, the reflective surface has a light source reflection effect, and the exit surface has a light source uniform export effect. 2. The light guide column according to claim 1, wherein the incident surface is a plane, and the light source can be directly arranged on the plane. 3. The light guide column according to claim 2, characterized in that: the incident surface is provided with a concave hole, and a light source can be arranged in the concave hole. 4. The light guide column according to claim 3, characterized in that: the bottom surface of the concave hole is provided with a convex point capable of concentrating light. 5. The light guide column according to claim 3, characterized in that: the bottom surface of the concave hole is provided with a concave point capable of astigmatizing light. 6. The light guide column according to claim 1, characterized in that: the incident surface is a plane, and the periphery of the incident surface is formed into a cone shape, and the light source can be directly arranged on the plane. 7. The light guide column according to claim 6, characterized in that: the incident surface is provided with a concave hole, and a light source can be arranged in the concave hole. 8. The light guide column according to claim 7, characterized in that: the bottom surface of the concave hole is provided with a convex point capable of concentrating light. 9. The light guide column according to claim 7, characterized in that: the bottom surface of the concave hole is provided with a concave point capable of astigmatizing light. 10. The light guide column according to any one of claims 1 to 9, characterized in that the reflective surfaces are two planes that are symmetrical and have an included angle with each other. 11. The light guide column according to any one of claims 1 to 9, characterized in that the reflective surface is two convex arc surfaces that are symmetrical and have an included angle with each other. 12. The light guide column according to any one of claims 1 to 9, characterized in that the reflective surfaces are two concave arc surfaces that are symmetrical and have an included angle with each other. 13. The light guide column according to any one of claims 1 to 9, characterized in that the reflective surface is a semi-cylindrical surface. 14. The light guide column according to claim 10, characterized in that: the outgoing surface is a convex arc surface. 15. The light guide column according to claim 10, characterized in that: the outgoing surface is a concave arc surface. 16. The light guide column according to claim 10, characterized in that the outgoing surface is a plane. 17. The light guide column according to claim 10, characterized in that the outgoing surface is a curved surface. 18. The light guide column according to claim 10, characterized in that the outgoing surface is a polygonal surface. 19. The light guide column according to claim 11, characterized in that: the outgoing surface is a convex arc surface. 20. The light guide column according to claim 11, characterized in that the outgoing surface is a concave arc surface. 21. The light guide column according to claim 11, characterized in that the outgoing surface is a plane. 22. The light guide column according to claim 11, characterized in that the outgoing surface is a curved surface. 23. The light guide column according to claim 11, characterized in that the outgoing surface is a polygonal surface. 24. The light guide column according to claim 12, characterized in that: the outgoing surface is a convex arc surface. 25. The light guide column according to claim 12, characterized in that: the outgoing surface is a concave arc surface. 26. The light guide column according to claim 12, characterized in that the outgoing surface is a plane. 27. The light guide column according to claim 12, characterized in that the outgoing surface is a curved surface. 28. The light guide column according to claim 12, characterized in that the outgoing surface is a polygonal surface. 29. The light guide column according to claim 13, characterized in that: the outgoing surface is a convex arc surface. 30. The light guide column according to claim 13, characterized in that the outgoing surface is a concave arc surface. 31. The light guide column according to claim 13, characterized in that the outgoing surface is a plane. 32. The light guide column according to claim 13, characterized in that the outgoing surface is a curved surface. 33. The light guide column according to claim 13, characterized in that the outgoing surface is a polygonal surface.

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