Light guide plate and light-emitting structure of light guide plate

Abstract

The utility model provides a light guide plate and a light emitting structure of the light guide plate, the light guide plate comprises a flat plate and at least one light emitting port arranged on the flat plate, the side edge of the flat plate is respectively provided with a light condensing surface and a plurality of reflecting surfaces, the light condensing surface is configured to focus incident light into collimated light and the collimated light enters the flat plate, and the reflecting surfaces are configured to reflect the collimated light into the flat plate. The plurality of reflecting surfaces are configured to reflect light beams entering the flat plate, and the light beams reflected by the reflecting surfaces are emitted from the light emitting port. The LED lamp is stable in structure, single-opening or multi-opening lighting can be achieved through a single light source, cost is saved, meanwhile, the light emitting direction and size can be adjusted, and the light emitting effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of luminescence, in particular to a light guide plate and a light guide plate luminescence structure. Background Art

[0002] At present, there are two main types of lighting in car USB products, such as Figure 1 In the first lighting system shown, two LED lamps 100 directly illuminate the diffuse light guide structure 200, and the light is transmitted to the light emitting surface 202 through the diffuse light guide structure 200. Figure 2 The second type shown is in the form of a light guide ring 10. After the light of the LED lamp 20 enters the light guide ring, the light is transmitted to the diffuse light guide structure 30, and then the light is transmitted to the light-emitting surface through the diffuse light guide structure.

[0003] For the first solution mentioned above, the LED directly irradiates the diffuse light guide structure, which has low light efficiency and poor light uniformity, and the number of LEDs is large, resulting in high cost.

[0004] For the second solution mentioned above, since the USB product space is small and the light guide is a thin product, the light guide is unstable during the actual installation process and is easily deformed, affecting the optical effect of the final product. In addition, the light guide is too thin and the mold is not easy to realize during the actual production process, so the applicability is low.

[0005] Therefore, it is necessary to provide a new technical solution. Utility Model Content

[0006] In order to solve the technical problems existing in the prior art, the utility model discloses a light guide plate and a light guide plate light-emitting structure, which has a stable structure, can realize single-port or multi-port lighting through a single light source, saves costs, and can adjust the direction and size of the light output to improve the light-emitting effect. The specific technical scheme is as follows:

[0007] In one aspect, the utility model provides a light guide plate, which includes a flat plate and at least one light-emitting port provided on the flat plate.

[0008] The side edges of the flat plate are respectively provided with a light-collecting surface and a plurality of reflecting surfaces.

[0009] The focusing surface is configured to focus the incident light into collimated light and enter the flat plate, and a plurality of reflecting surfaces are configured to reflect the light beam entering the flat plate, and the light beam reflected by the reflecting surface is emitted from the light-emitting port.

[0010] Furthermore, the plurality of reflecting surfaces include a first reflecting surface and a second reflecting surface, the first reflecting surface and the second reflecting surface are arranged at intervals, the first reflecting surface is configured to reflect at least a portion of the focused collimated light to the second reflecting surface, and the second reflecting surface is configured to reflect at least a portion of the collimated light to the light-emitting port.

[0011] Further, the first reflecting surface is an inclined reflecting surface;

[0012] The second reflection surface is a stepped reflection surface and / or a prism tooth reflection surface, and the second reflection surface is located on two opposite sides of the light emitting port.

[0013] Furthermore, it also includes a bent transition plate,

[0014] The flat plate includes a first flat plate and a second flat plate, the light-emitting port is located on the second flat plate, and the axis of the light-emitting port is perpendicular to the plane of the second flat plate.

[0015] The bent transition plate is bent and extends from the side of the first flat plate to the side of the second flat plate, and the bent transition plate is configured to transmit the collimated light transmitted in the first flat plate to the second flat plate.

[0016] The focusing surface is located on the side of the first flat plate, wherein at least one of the first reflecting surfaces is located on the side of the first flat plate, at least one of the first reflecting surfaces is located on the side of the second flat plate, and at least one of the second reflecting surfaces is located on the side of the second flat plate.

[0017] Furthermore, the light guide plate is a transparent PC light guide plate or a transparent PMMA light guide plate.

[0018] On the other hand, the utility model provides a light guide plate light emitting structure, which includes a light source, a light guide structure and the light guide plate described in the first aspect above.

[0019] The light guide structure is embedded in the light emitting port, and the light source faces the light focusing surface.

[0020] The focusing surface is configured to focus the incident light beam emitted by the light source into a collimated light beam that enters the light guide plate, and the plurality of reflecting surfaces are configured to reflect the collimated light beam and emit it from the light-emitting port. The light-guiding structure is configured to receive the outgoing light beam from the light-emitting port, and the light-guiding structure is illuminated by the outgoing light beam.

[0021] Furthermore, the light guiding structure is a diffuse reflection and diffusion light guiding structure.

[0022] Furthermore, the light-collecting surface is in a groove shape, and the light source is located in the groove.

[0023] The light guiding structure includes a data interface.

[0024] Furthermore, the light source is a single light source.

[0025] Furthermore, the single light source is a single LED light source, and the data interface is a USB interface.

[0026] The utility model has the following beneficial effects:

[0027] (1) The utility model adopts a single LED light source for lighting, which can realize single-port or multi-port lighting, saving LED costs.

[0028] (2) The present invention adopts a relatively stable light guide plate structure, which is more stable than the slender ring structure in the prior art.

[0029] (3) The utility model sets a second reflective surface on the light guide plate, and the second reflective surface is a step reflective surface and / or a prism tooth reflective surface. The direction and size of the light output are controlled by adjusting the angle and size of the step or prism teeth, which greatly improves the optimization of product uniformity.

[0030] (4) The utility model adopts a focusing surface on the light incident side of the LED light source to refract the divergent light into collimated light, thereby improving the utilization rate of light.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of a light-emitting structure in the prior art;

[0034] Figure 2 It is a schematic diagram of another light-emitting structure in the prior art;

[0035] Figure 3 This is a schematic structural diagram of a light guide plate of the utility model in one embodiment;

[0036] Figure 4 This is a schematic diagram of the light trend structure of the light guide plate of the utility model in one embodiment;

[0037] Figure 5 This is a schematic structural diagram of a light guide plate of the utility model in another embodiment;

[0038] Figure 6 This is a schematic structural diagram of a light guide plate of the utility model in yet another embodiment;

[0039] Figure 7 It is a structural schematic diagram of the light-emitting structure of the light guide plate of the utility model;

[0040] Figure 8 for Figure 7 Schematic diagram of the decomposition.

[0041] Among them, 1-light guide plate, 2-light source, 3-light guide structure, 31-USB interface, 11-first flat plate, 12-second flat plate, 13-bent transition plate, 14-light emitting port, 15-focusing surface, 161-first inclined reflection surface, 162-second inclined reflection surface, 163-third inclined reflection surface, 171-first step reflection surface, 172-second step reflection surface, 183-first prism tooth reflection surface, 184-second prism tooth reflection surface, 191-second reflection surface one, 192-second reflection surface two, 193-second reflection surface three, 194-second reflection surface four. DETAILED DESCRIPTION

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal connection between two elements or interaction between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] See also Figures 1 to 8 , Figure 1 It is a schematic diagram of a light-emitting structure in the prior art; Figure 2 It is a schematic diagram of another light-emitting structure in the prior art; Figure 3 This is a schematic structural diagram of a light guide plate of the utility model in one embodiment; Figure 4 This is a schematic diagram of the light trend structure of the light guide plate of the utility model in one embodiment; Figure 5 This is a schematic structural diagram of a light guide plate of the utility model in another embodiment; Figure 6 This is a schematic structural diagram of a light guide plate of the utility model in yet another embodiment; Figure 7 It is a structural schematic diagram of the light-emitting structure of the light guide plate of the utility model; Figure 8 for Figure 7 Schematic diagram of the decomposition.

[0046] See also Figure 3 and Figure 4 The light guide plate 1 of this embodiment includes a flat plate, a bending transition plate 13 and a light emitting port 14. The light guide plate 1 is a transparent PC light guide plate or a transparent PMMA light guide plate for guiding light.

[0047] The flat plate includes a first flat plate 11 and a second flat plate 12. The bent transition plate 13 is connected between the first flat plate 11 and the second flat plate 12, and the bent transition plate 13 is bent and extends from the side edge of the first flat plate 11 to the side edge of the second flat plate 12. Further, the thickness of the bent transition plate 13 is consistent with the thickness of the flat plate.

[0048] The light-emitting port 14 is located on the second flat plate 12 , and the axis of the light-emitting port 14 is perpendicular to the plane of the second flat plate 12 .

[0049] The side of the flat plate has a light-collecting surface 15 and a plurality of reflecting surfaces. The light-collecting surface 15 is located on the side of the first flat plate 11. The plurality of reflecting surfaces include a first reflecting surface and a second reflecting surface, and the first reflecting surface and the second reflecting surface are arranged at intervals. In this embodiment, there are three first reflecting surfaces. For the convenience of description, the first reflecting surfaces are marked as a first inclined reflecting surface 161, a second inclined reflecting surface 162, and a third inclined reflecting surface 163. The first inclined reflecting surface 161 is located on the side of the first flat plate 11 and is adjacent to the light-collecting surface 14; the second inclined reflecting surface 162 and the third inclined reflecting surface 163 are both located on the side of the second flat plate 12. In other embodiments, the number of the first reflecting surfaces can be determined according to the actual light-emitting conditions required by the product. In this embodiment, the first reflecting surface is an inclined reflecting surface, and the propagation path of light is changed by the inclined reflecting surface. According to the product shape, the angle and size of the inclined reflecting surface can be adjusted to control the light emission direction.

[0050] Figure 3 and Figure 4 In the embodiment, the first reflective surface is preferentially distributed at the corners of the light guide plate 1, the first inclined reflective surface 161 is respectively located at the side of the corners of the first flat plate 11, and the first inclined reflective surface 161 is opposite to the light-collecting surface 15, and the collimated light focused by the light-collecting surface 15 can be projected onto the first inclined reflective surface 161 as much as possible. The second inclined reflective surface 162 and the third inclined reflective surface 163 are respectively located at the side of the corners of the second flat plate 12. The utility model can distribute the light beam to the entire flat plate to the greatest extent by preferentially distributing the first reflective surface at the corners of the light guide plate 1, thereby ensuring that the second reflective surface can receive more light reflected by the first reflective surface, and further ensuring that more collimated light is reflected to the light-emitting port 14. Figure 4 The dotted arrow in the figure indicates the direction of the light. Figure 4 It can be known that the first reflective surface of the present invention can reflect at least a part of the focused collimated light to the second reflective surface.

[0051] Figure 3 and Figure 4 In the embodiment, the second reflecting surface is located on the side of the second flat plate 12, and there are two second reflecting surfaces. For the convenience of description, the second reflecting surfaces are marked as a first step reflecting surface 171 and a second step reflecting surface 172, respectively. The first step reflecting surface 171 and the second step reflecting surface 172 are respectively located on opposite sides of the light-emitting port 14, so as to achieve the effect that the upper and lower sides of the light-guiding structure arranged in the light-emitting port 14 are both lit up. In this embodiment, the second reflecting surface is designed as a stepped reflecting surface, and the irradiation direction and distribution of light are adjusted by adjusting the angle and size of the steps, so as to achieve the effect of optimizing uniformity. In other embodiments, the number of the second reflecting surfaces can be determined according to the actual lighting conditions required by the product. The second reflecting surface can be designed as one, or the second reflecting surface can be more than two, and the more than two second reflecting surfaces are distributed around the light-emitting port to achieve a uniform lighting effect. By Figure 4 It can be known that in the present invention, the second reflection surface can reflect at least a portion of the collimated light reflected by the first reflection surface to the light-emitting port 14 .

[0052] Figure 5 FIG. 1 is a schematic diagram of the structure of the light guide plate of the utility model in another embodiment. Figure 5 As shown, the second reflection surface is two prism teeth reflection surfaces. For the convenience of description, the second reflection surfaces in this embodiment are respectively marked as the first prism teeth reflection surface 183 and the second prism teeth reflection surface 184. In this embodiment, the second reflection surface is designed as a prism teeth structure, and the distribution of light is adjusted by adjusting the width, depth and angle of the prism teeth to achieve the effect of optimizing uniformity.

[0053] Figure 6 FIG. 1 is a schematic diagram of the structure of a light guide plate in another embodiment of the present invention. Figure 6 As shown; the number of the light-emitting ports 14 is two, and a second reflecting surface is provided on the opposite sides of each light-emitting port. For the convenience of description, the second reflecting surfaces in this embodiment are respectively marked as second reflecting surface one 191, second reflecting surface two 192, second reflecting surface three 193 and second reflecting surface four 194. The second reflecting surface one 191 and the second reflecting surface two 192 are respectively located on the two sides of one light-emitting port, and the second reflecting surface three 193 and the second reflecting surface four 194 are respectively located on the two sides of another light-emitting port. In other embodiments, the number of the light-emitting ports is more than two. The light guide plate of the utility model can be applied to multi-port light-emitting products only by adjusting the position and distribution of the second reflecting surface. The product has a simple structure, is easy to operate, and has a wide range of uses.

[0054] It should be noted that in Figures 3 to 6 In the embodiment, the light source 2 and the light emitting surface of the light emitting port 14 are not in the same plane, and the first flat plate 11 and the second flat plate 13 need to be connected by a bending transition plate 13, and the light reflected by the first inclined reflection surface 161 is transferred to the second flat plate 12 required to emit light by the bending transition plate 113. In other embodiments, if the light source 2 and the light emitting surface of the light emitting port 14 are in the same plane, the bending transition plate can be eliminated, the first flat plate 11 and the second flat plate 12 are located in the same plane, and the light reflected by the first inclined reflection surface 161 directly enters the second flat plate 12 required to emit light.

[0055] The utility model also provides a light guide plate luminous structure, such as Figure 7 As shown, the light guide plate light emitting structure comprises a single light source 2, a light guide structure 3 and the light guide plate 1 in the above embodiment. The light guide structure 3 is embedded in the light emitting port 14.

[0056] A single light source 2 faces the light-collecting surface 15. Furthermore, the light source 2 is a single LED light source. The light-collecting surface is in a groove shape, and the light source 2 is located in the groove. Most of the scattered light emitted by the LED light source is directed to the inner surface of the groove. Through the focusing effect of the inner surface of the groove, more light beams enter the light guide plate, thereby improving the lighting effect.

[0057] The light guide structure 3 is a milky white diffuse reflection and diffusion light guide structure.

[0058] The light guide structure 3 includes a data interface. Further, the data interface is a USB interface 31.

[0059] It should be noted that, in the present invention, the collimated light beam focused by the focusing surface enters the plane, and its propagation direction in the plane is parallel to the plane, and the propagation direction of the light beam after being reflected by several reflecting surfaces is parallel to the plane, and the light beam emitted from the light-emitting port is also parallel to the plane, so that the reflected light beam can be emitted from the light-emitting port to the light-guiding structure to the greatest extent, thereby improving the light-emitting effect.

[0060] like Figure 7 and Figure 8 As shown, the divergent light emitted by the LED light source 2 is focused into collimated light by the focusing surface 15, and the collimated light is reflected by the first inclined reflection surface 161 of the first flat plate 11. Since the LED light source 2 and the light-emitting area are not in the same plane, the bending transition plate 13 will transfer the light reflected by the first inclined reflection surface 161 to the second flat plate 12 that needs to emit light. At this time, a part of the light will pass through one of the second reflection surfaces, such as the first stepped reflection surface 171, to reflect the light to the upper half of the light-guiding structure 3 in the inner circle light-emitting port 14 of the second flat plate 12, and the other part of the light will pass through the second inclined reflection surface 162 of the second flat plate 12 to the third inclined reflection surface 163, and then through the third inclined reflection surface 163 to another second reflection surface, such as the second stepped reflection surface 172, and the light will be reflected to the lower half of the light-guiding structure 3 in the light-emitting port 14 through the second stepped reflection surface 172, thereby achieving the effect of lighting up both the upper and lower sides of the light-guiding structure.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0062] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify and vary the above embodiments within the scope of the present invention.

Claims

1. A light guide plate, characterized in that: It comprises a flat plate and at least one light-emitting port (14) opened on the flat plate. The side edges of the plate are respectively provided with a light collecting surface (15) and a plurality of reflecting surfaces. The focusing surface is configured to focus incident light into collimated light and enter the flat plate, and a plurality of reflecting surfaces are configured to reflect the light beam entering the flat plate, and the light beam reflected by the reflecting surface is emitted from the light-emitting port (14).

2. The light guide plate according to claim 1, characterized in that: The plurality of reflecting surfaces include a first reflecting surface and a second reflecting surface, the first reflecting surface and the second reflecting surface are arranged at intervals, the first reflecting surface is configured to reflect at least a portion of the focused collimated light to the second reflecting surface, and the second reflecting surface is configured to reflect at least a portion of the collimated light to the light-emitting port.

3. The light guide plate according to claim 2, characterized in that: The first reflecting surface is an inclined reflecting surface; The second reflection surface is a stepped reflection surface and / or a prism tooth reflection surface, and the second reflection surface is located on two opposite sides of the light emitting port.

4. The light guide plate according to claim 3, characterized in that: It also includes a bent transition plate, The flat plate comprises a first flat plate (11) and a second flat plate (12), the light-emitting port (14) is located on the second flat plate (12), and the axis of the light-emitting port (14) is perpendicular to the plane of the second flat plate (12). The bent transition plate (13) is bent and extends from the side of the first flat plate (11) to the side of the second flat plate (12), and the bent transition plate (13) is configured to transmit the collimated light transmitted in the first flat plate (11) to the second flat plate (12). The light-collecting surface (15) is located on a side of the first flat plate (11), wherein at least one of the first reflecting surfaces is located on a side of the first flat plate (11), at least one of the first reflecting surfaces is located on a side of the second flat plate (12), and at least one of the second reflecting surfaces is located on a side of the second flat plate (12).

5. The light guide plate according to claim 1, characterized in that: The light guide plate is a transparent PC light guide plate or a transparent PMMA light guide plate.

6. A light guide plate luminous structure, characterized in that: It comprises a light source (2), a light guide structure (3) and a light guide plate (1) as claimed in any one of claims 1 to 5, The light guide structure (3) is embedded in the light emitting port (14), and the light source (2) faces the light focusing surface (15). The focusing surface (15) is configured to focus the incident light beam emitted by the light source into a collimated light beam that enters the light guide plate (1), the plurality of reflecting surfaces are configured to reflect the collimated light beam and emit it from the light-emitting port (14), the light-guiding structure (3) is configured to receive the outgoing light beam from the light-emitting port (14), and the light-guiding structure (3) is illuminated by the outgoing light beam.

7. The light guide plate light emitting structure according to claim 6, characterized in that: The light guiding structure (3) is a diffuse reflection and diffusion light guiding structure.

8. The light guide plate light emitting structure according to claim 6, characterized in that: The light-collecting surface (15) is in the shape of a groove, and the light source (2) is located in the groove. The light guiding structure includes a data interface.

9. The light guide plate light emitting structure according to claim 6, characterized in that: The light source (2) is a single light source.

10. The light guide plate light emitting structure according to claim 9, characterized in that: The single light source is a single LED light source, and the data interface is a USB interface (31).

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