CN201137875Y - Light guide column - Google Patents

Abstract

A light guide column is a cylindrical body with light conduction property, and is provided with a light incident surface arranged inside, a light reflecting surface and a light emergent surface which are respectively positioned at two sides of the light incident surface, wherein the light incident surface, the light reflecting surface and the light emergent surface are all provided with optical structures, so that the light incident surface has a light source diffusion effect, the light reflecting surface has a light source reflection effect, and the light emergent surface has a light source uniform derivation effect; the light guide column can be provided with a light source, so that the light source can project light rays into the light guide column from the incident surface.

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, such as monitors, LCD TVs, notebook computers and other devices that require a backlight to display images. A general backlight module usually includes a light guide plate. A reflective sheet is arranged on the first side of the light guide plate, and a plurality of optical films composed of a diffusion sheet and a prism sheet are arranged on the opposite second side. A light source is provided, and 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 sequentially emitted through the diffuser sheet and the prism sheet. In other words, in the backlight module of the prior art, the light guide component 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. Condition.

Utility model content

The main purpose of the present utility model is to provide a light guide column suitable for backlighting or lighting.

The technical feature of the light guide column provided by the utility model is that a columnar body is made of a material with excellent light-transmitting properties. The light reflecting surface and the light exiting surface of the incident surface are provided with a positioning part for installing the light source on the side of the light guide column corresponding to the incident surface. It has the light source diffusion effect, the reflective surface has the light source reflection effect, and the exit surface has the light source uniform export effect. The optical structure, when manufacturing the light guide column, is integrally molded with light spots or gratings such as "V" grooves, diamonds, diamonds, circles, semicircles, squares, polygons, etc., or atomized etc., in order to achieve the optical effect of refracting and reflecting light.

In the utility model, the incident surface arranged inside the light guide column can be in various shapes such as plane, concave arc surface, protruding arc surface, protruding or concave "V"-shaped surface, concave polygonal surface, etc.

In the present invention, the reflective surface arranged on one side of the light guide column is two planes that are symmetrical to each other and perpendicular to the central axis of the incident surface; they can also be symmetrical to each other and form an included angle with the central axis of the incident surface. Two slopes; it may also be two convex or concave arc surfaces that are symmetrical to each other and form an included angle with the central axis of the incident surface.

The utility model is arranged on the exit surface of the other side of the light guide column, which can be a convex or concave arc surface, and can also be a plane, a "V"-shaped surface or a polygonal surface and other shapes.

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

The beneficial effect of the utility model is that the light guide column suitable for backlighting or lighting can be applied to backlight modules, light boxes, lighting, etc., and adopts a combination of various incident surfaces, reflective surfaces, and outgoing surfaces. , has the advantages of uniform brightness and small loss of light source.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of an embodiment showing the combination relationship between the light guide column and the light source described in the present invention;

Fig. 2A is a schematic view showing the end face of an embodiment in which the incident surface described in the present invention is a concave arc surface (or a spherical concave arc surface);

Fig. 2B is a schematic view showing the end face of the embodiment in which the incident surface described in the present invention is a convex cone;

Fig. 2C is a schematic diagram showing the end face of an embodiment in which the incident surface described in the present invention is a convex arc surface (or a spherical convex arc surface);

Fig. 2D is a schematic view showing the end face of the embodiment in which the incident surface described in the present invention is a plane;

Fig. 2E is a schematic view showing the end face of the embodiment in which the incident surface described in the present invention is a concave conical surface;

Fig. 2F is a schematic view showing the end face of an embodiment in which the incident surface described in the present invention is a concave polygonal surface;

Fig. 3A is a schematic diagram showing the end face of an embodiment in which the reflective surface described in the present invention is two symmetrical planes;

Fig. 3B is a schematic view showing the end face of an embodiment in which the reflective surface described in the present invention is two symmetrical slopes;

Fig. 3C is a schematic diagram showing the end face of the embodiment in which the reflective surface described in the present invention is two symmetrical convex arc surfaces;

Fig. 3D is a schematic view showing the end face of the embodiment in which the reflective surface described in the present invention is two symmetrical concave arc surfaces;

Fig. 4A is a schematic view showing the end face of 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 view showing the end face of 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 view showing the end face of an embodiment in which the exit surface described in the present invention is a triangle;

Fig. 4D is a schematic view showing the end face of an embodiment in which the exit surface described in the present invention is a polygon;

Fig. 4E is a schematic view showing the end face of an embodiment in which the exit surface described in the present invention is a plane;

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

Symbol description of main components

1...Light guide column

10...Positioning department

11...incident surface

12...reflective surface

13...Emitting surface

2...Light source

21...circuit board

22...LEDs

3... light box

4...diffusion plate

Detailed ways

The implementation of the present invention will be described in more detail below in conjunction with the drawings and component symbols, so that those familiar with the technology can implement it after studying this specification.

Fig. 1 is a schematic view showing an embodiment of the light guide column 1 described in 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. 1 Only one of the shapes is shown, and other embodiments will be disclosed in the drawings described later. This figure 1 shows that the light guide column 1 of the present invention has a light incident surface 11 extending from the surface to the inside, and light reflection surfaces 12 located on both sides of the incident surface 11 and also located on the radially opposite sides of the light guide column 1 With the light exit surface 13, the incident surface 11, the reflective surface 12 and the exit surface 13 are uniformly provided with an optical structure, so that the incident surface 11 has a light source diffusion effect, the reflective surface 12 has a light source reflection effect, and the exit surface 13 has The light source evenly exports the effect. At the entrance of the incident surface 11 formed by the light guide column 1, a positioning portion 10 is provided for installing the light source 2. The light source 2 includes a circuit board 21, and a plurality of LEDs 22 arranged on the circuit board 21; After the emitted light 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 directly emitted from the exit surface 13, and part of the light will be reflected by the reflective surface 12 and then emitted from the exit surface 13.

2A to 2F show some embodiments of the incident surface 11 of the light guide rod of the present invention. Since the incident surface of the present invention can be arranged and combined with various reflective surfaces and outgoing surfaces, the reflective surface 12 and the outgoing surface 13 are represented by imaginary lines, while the incident surface 11 is represented by a solid line. Wherein, FIG. 2A shows that the incident surface 11 may be a concave arc surface or a spherical concave arc surface. FIG. 2B shows that the incident surface 11 may be a convex "V"-shaped surface. FIG. 2C shows that the incident surface 11 may be a convex arc surface. FIG. 2D shows that the incident surface 11 may be a plane. FIG. 2E shows that the incident surface 11 may be a concave "V"-shaped surface. FIG. 2F shows that the incident surface 11 may be a concave polygonal surface.

Figures 3A to 3D show several embodiments of the reflective surface 12 of the present invention. Since the reflective surface of the present invention can be arranged and combined with various incident surfaces and exit surfaces, the incident surface is represented by a phantom line. 11 and the emitting surface 13, while the reflecting surface 12 is indicated by a solid line. As shown in FIG. 3A , the reflective surface 12 may be two planes that are symmetrical to each other and perpendicular to the central axis of the incident surface 11 . Alternatively, as shown in FIG. 3B , they may be symmetrical to each other and form an angled slope with the central axis of the incident surface. As shown in FIG. 3C , they may also be convex arc surfaces that are symmetrical to each other and form an included angle with the central axis of the incident surface. As shown in FIG. 3D , they may also be concave arcuate surfaces that are symmetrical to each other and form an included angle with the central axis of the incident surface.

4A to 4E show several embodiments of the output surface 13 of the present invention. Since the output surface of the present invention can be arranged and combined with various incident surfaces and reflection surfaces, the incident surface is represented by a phantom line. 11 and reflective surface 12, while the outgoing surface 13 is represented by a solid line. As shown in FIG. 4A , the emitting surface 13 may be a convex arc surface. A concave arc surface as shown in FIG. 4B is also possible. A convex "V" shaped face as shown in Figure 4C is also possible. A polygonal face as shown in FIG. 4D is also possible. A plane as shown in Figure 4E is also possible.

Fig. 5 shows that the light guide column 1 of the present invention can be installed in the light box 3, and then a diffusion plate 4 or optical film is covered on the light box 3, so that the light guide column 1 can be illuminated in the light box.

The above descriptions are only preferred embodiments for explaining the utility model, and are not intended to limit the utility model in any form. Therefore, any relevant modifications or changes made under the same creative spirit should still be implemented. Included within the scope of patent protection of the utility model.

Claims (31)

1. A light guide column, which is a columnar body with the property of conducting light, is characterized in that the light guide column has a light incident surface located inside it, and light reflection surfaces and light rays respectively located on opposite sides of the light incident surface. On the exit surface, a positioning part for installing a light source is provided on the side of the light guide column corresponding to the incident surface, and the incident surface, the reflective surface and the exit surface are uniformly provided with an optical structure, so that the incident surface has a light source diffusion effect. The reflective surface has the effect of light source reflection, and the exit surface has the effect of uniformly deriving the light source. 2. The light guide column according to claim 1, wherein the incident surface is a concave arc surface. 3. The light guide column according to claim 1, wherein the incident surface is a convex "V"-shaped surface. 4. The light guide column according to claim 1, wherein the incident surface is a convex arc surface. 5. The light guide column according to claim 1, wherein the incident surface is a plane. 6. The light guide column according to claim 1, wherein the incident surface is a concave "V"-shaped surface. 7. The light guide column according to claim 1, wherein the incident surface is a concave polygonal surface. 8. The light guide column according to any one of claims 1 to 7, wherein the reflective surfaces are planes that are symmetrical to each other and perpendicular to the central axis of the incident surface. 9. The light guide column according to any one of claims 1 to 7, characterized in that, the reflective surfaces are mutually symmetrical and have an included angle with the central axis of the incident surface. 10. The light guide column according to any one of claims 1 to 7, wherein the reflective surfaces are convex arc surfaces that are symmetrical to each other and have an included angle with the central axis of the incident surface. 11. The light guide column according to any one of claims 1 to 7, wherein the reflective surfaces are concave curved surfaces that are symmetrical to each other and have an included angle with the central axis of the incident surface. 12. The light guide column according to claim 8, wherein the outgoing surface is a convex arc surface. 13. The light guide column according to claim 8, wherein the outgoing surface is a concave arc surface. 14. The light guide column according to claim 8, wherein the outgoing surface is a plane. 15. The light guide column according to claim 8, wherein the outgoing surface is a convex "V"-shaped surface. 16. The light guide column according to claim 8, wherein the outgoing surface is a polygonal surface. 17. The light guide column according to claim 9, wherein the outgoing surface is a convex arc surface. 18. The light guide column according to claim 9, wherein the outgoing surface is a concave arc surface. 19. The light guide column according to claim 9, wherein the outgoing surface is a plane. 20. The light guide column according to claim 9, wherein the outgoing surface is a convex "V"-shaped surface. 21. The light guide column according to claim 9, wherein the outgoing surface is a polygonal surface. 22. The light guide column according to claim 10, wherein the outgoing surface is a convex arc surface. 23. The light guide column according to claim 10, wherein the outgoing surface is a concave arc surface. 24. The light guide column according to claim 10, wherein the outgoing surface is a plane. 25. The light guide column according to claim 10, wherein the outgoing surface is a convex "V"-shaped surface. 26. The light guide column according to claim 10, wherein the outgoing surface is a polygonal surface. 27. The light guide column according to claim 11, wherein the outgoing surface is a convex arc surface. 28. The light guide column according to claim 11, wherein the outgoing surface is a concave arc surface. 29. The light guide column according to claim 11, wherein the outgoing surface is a plane. 30. The light guide column according to claim 11, wherein the outgoing surface is a convex "V"-shaped surface. 31. The light guide column according to claim 11, wherein the outgoing surface is a polygonal surface.

Images