Light guide structure for sound box and sound box
By designing a structure with gradually increasing cross-sectional area of the inner and outer walls in the light guide of the outdoor speaker, combined with single-ring LED lights and reflective grooves, the problem of uneven light on the outdoor speaker's light output is solved, and the uniform light output effect is achieved, reducing costs and improving the lightness of the structure.
Patent Information
- Application Number
- CN202421481821.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The existing outdoor speakers have uneven light when they are exposed to the light surface, making it difficult to achieve the ideal visual effect, and have a heavy structure and high cost.
By adopting a light guide, the cross-sectional area of the inner and outer walls of the light guide gradually increases from the inlet light surface to the direction of the outgoing light surface. Combined with a single-circle LED lamp and a reflective groove structure, the multiple reflections and diffuse reflections of light in the side wall of the light guide are realized, and the uniformity of the light surface light is improved.
When the light guide has a wider light output surface, a single-wind LED lamp is used to achieve uniform light output, which reduces production costs, is lighter and thinner, and increases the brightness intensity.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sound boxes, and in particular to a light guide structure for a sound box and the sound box. Background Art
[0002] With the increasing number of outdoor entertainment activities, outdoor speakers, as an important tool for creating atmosphere, are constantly evolving in design and function. While pursuing sound quality, visual effects are gradually becoming one of the important indicators for considering outdoor speaker performance.
[0003] In the prior art, a light strip is provided on the light incident surface of an outdoor speaker. Since the light emitting surface of an outdoor speaker is usually wide, a single-circle light strip often cannot achieve uniform lighting effects. To solve this problem, traditional practices usually use multiple-circle light strips or increase the distance between the light strip and the light emitting surface. However, this approach not only increases costs, but also makes the product structure heavy. At the same time, due to the attenuation and scattering of light during propagation, the light at the edge of the light emitting surface is often weak, making it difficult to achieve an ideal visual effect.
[0004] Based on this, there is an urgent need for a light guide structure for a speaker and a speaker to solve the above-mentioned problems. Utility Model Content
[0005] Based on the above, the purpose of the utility model is to provide a light-guiding structure and a speaker for a speaker, which realizes a light-guiding effect of uniform light emission by using a single circle of LED lights when the light-emitting surface of the light guide is wider, thereby reducing production costs, and the distance between the light panel and the light-emitting surface is smaller, making the structure lighter and thinner.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] In one aspect, a light guide structure for a sound box is provided, comprising:
[0008] A light guide, wherein the light guide is provided with a receiving cavity, and the receiving cavity is used to receive a sound box body;
[0009] One end of the light guide forms a light incident surface, the outer wall of the light guide forms a second light reflecting surface, the inner wall of the light guide forms a first light reflecting surface and a light emitting surface, and the first light reflecting surface is located on a side of the light emitting surface close to the light incident surface;
[0010] The cross-sectional area of the inner wall of the light guide and the cross-sectional area of the outer wall of the light guide gradually increase from a direction away from the light incident surface;
[0011] A light board, wherein the light board is arranged on one side of the light incident surface, and the light of the light board can be irradiated on the light incident surface.
[0012] As a preferred technical solution for a light-guiding structure of a sound box, the second reflective surface is provided with a plurality of reflective grooves; the plurality of reflective grooves form mesh points.
[0013] As a preferred technical solution for a light-guiding structure of a sound box, the density of the grid points gradually increases from the light incident surface toward the light emitting surface.
[0014] As a preferred technical solution for a light-guiding structure of a sound box, the diameter of the light-reflecting groove gradually increases from the light-entering surface toward the light-emitting surface.
[0015] As a preferred technical solution for a light-guiding structure of a sound box, the first reflective surface is provided with a plurality of reflective grooves, and the plurality of reflective grooves form mesh points.
[0016] As a preferred technical solution for a light-guiding structure of a sound box, the light incident surface is a smooth plane.
[0017] As a preferred technical solution for a light-guiding structure of a sound box, the light-emitting surface is a textured surface.
[0018] As a preferred technical solution for a light-guiding structure of a sound box, the second light-reflecting surface is a frosted surface.
[0019] On the other hand, a speaker is provided, comprising a speaker body and the light guide structure for the speaker as described in any one of the above schemes, wherein the speaker body is arranged in the accommodating cavity of the light guide member.
[0020] As a preferred technical solution for a speaker, the speaker also includes a shell assembly and a circuit board. The light guide structure for the speaker and the circuit board are arranged in the shell assembly. The circuit board is located on the side of the light board away from the light guide. The light board and the speaker body are electrically connected to the circuit board.
[0021] The beneficial effects of the utility model are:
[0022] The utility model provides a light guide structure for a speaker and a speaker. When working, the light emitted by the lamp panel is irradiated on the light incident surface, and enters the side wall of the light guide through the light incident surface. The light can be reflected multiple times between the first light reflecting surface and the second light reflecting surface until it is emitted through the light emitting surface, thereby improving the uniformity of the light on the light emitting surface. Furthermore, since the cross-sectional area of the inner wall of the light guide and the cross-sectional area of the outer wall of the light guide gradually increase from the light incident surface to the direction close to the light emitting surface, the side wall of the light guide is inclined relative to the light of the lamp panel, and the original direct light path is changed into a return light path, thereby increasing the number of reflections of the light in the side wall of the light guide, and further improving the uniformity of the light on the light emitting surface. The utility model realizes that when the light emitting surface of the light guide is wide, a light guide effect with uniform light emission can be presented by using a single-circle LED lamp, thereby reducing production costs. The distance between the lamp panel and the light emitting surface is small, making the structure thinner and lighter. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.
[0024] Figure 1 It is a structural schematic diagram of a speaker provided by a specific embodiment of the utility model;
[0025] Figure 2 It is a structural exploded diagram of a speaker provided in a specific embodiment of the utility model;
[0026] Figure 3 It is a cross-sectional view of a speaker provided by a specific embodiment of the utility model;
[0027] Figure 4 It is a structural schematic diagram of a light guide provided in a specific implementation manner of the utility model.
[0028] The following are marked in the figure:
[0029] 1. light guide; 11. accommodating cavity; 12. light incident surface; 13. second light reflecting surface; 14. first light reflecting surface; 15. light emitting surface; 16. reflective groove;
[0030] 2. Light board;
[0031] 3. Speaker body;
[0032] 4. Shell assembly; 41. Shell; 42. End plate. DETAILED DESCRIPTION
[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship 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.
[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0036] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0037] like Figure 1-Figure 3 As shown, this embodiment provides a light guide structure for a sound box, and the light guide structure for a sound box includes a light guide member 1 and a light panel 2.
[0038] Specifically, the light guide 1 is provided with a accommodating cavity 11, which is used to accommodate the speaker body 3; one end of the light guide 1 forms a light incident surface 12, the outer wall of the light guide 1 forms a second light reflecting surface 13, the inner wall of the light guide 1 forms a first light reflecting surface 14 and a light emitting surface 15, and the first light reflecting surface 14 is located on the side of the light emitting surface 15 close to the light incident surface 12; the cross-sectional area of the inner wall of the light guide 1 and the cross-sectional area of the outer wall of the light guide 1 gradually increase from the light incident surface 12 to the direction close to the light emitting surface 15; the light panel 2 is arranged on one side of the light incident surface 12, and the light of the light panel 2 can be irradiated on the light incident surface 12.
[0039] During operation, the light emitted by the lamp board 2 is irradiated on the light incident surface 12, and enters the side wall of the light guide 1 through the light incident surface 12. The light can be reflected multiple times between the first light reflecting surface 14 and the second light reflecting surface 13 until it is emitted through the light emitting surface 15, thereby improving the uniformity of the light on the light emitting surface 15. Furthermore, since the cross-sectional area of the inner wall of the light guide 1 and the cross-sectional area of the outer wall of the light guide 1 gradually increase from the light incident surface 12 toward the direction close to the light emitting surface 15, the side wall of the light guide 1 is tilted relative to the light of the lamp board 2, and the original direct light path is changed into a return light path, thereby increasing the number of reflections of the light in the side wall of the light guide 1, and further improving the uniformity of the light on the light emitting surface 15. This embodiment realizes that when the light emitting surface 15 of the light guide 1 is relatively wide, a single-circle LED lamp can be used to present a light guiding effect with uniform light output, thereby reducing production costs. The distance between the lamp board 2 and the light emitting surface 15 is relatively small, making the structure thinner and lighter, and improving the light intensity.
[0040] In this embodiment, the light incident surface 12 is annular, the lamp board 2 matches the shape of the light incident surface 12, and a plurality of lamp beads are arranged at intervals along the extension direction of the lamp board 2.
[0041] Preferably, if Figure 4 As shown, the second reflective surface 13 is provided with a plurality of reflective grooves 16; the plurality of reflective grooves 16 form dots. When light is irradiated on the reflective grooves 16 of the second reflective surface 13, diffuse reflection can be generated, thereby improving the uniformity of light. Further preferably, the first reflective surface 14 is provided with a plurality of reflective grooves 16; the plurality of reflective grooves 16 form dots; when light is irradiated on the reflective grooves 16 of the first reflective surface 14, diffuse reflection can also be generated, thereby further improving the uniformity of light.
[0042] In this embodiment, the density of the dots gradually increases from the light incident surface 12 toward the light emitting surface 15. The density of the dots close to the light incident surface 12 is relatively small, which is beneficial to the conduction of light and ensures the brightness of the light. The density of the dots far away from the light board 2 is relatively large, which causes more diffuse reflection of light, improves uniformity, and achieves a uniform light output effect.
[0043] Preferably, the diameter of the reflective groove 16 gradually increases from the light incident surface 12 toward the light emitting surface 15. The diameter of the dots close to the light incident surface 12 is smaller, which is conducive to the conduction of light and ensures the brightness of the light; the diameter of the dots away from the light board 2 is larger, so that the light is more diffusely reflected, the uniformity is improved, and the effect of uniform light output is achieved.
[0044] In this embodiment, the size of the reflective groove 16 is calculated according to the formula Y=aX 2 +bX+c is calculated, where Y is the radius of the reflective groove 16, and X is the distance between the reflective groove 16 and the central axis of the light guide 1. The range of a is 0-1, preferably 0.00003; the range of b is 0-1, preferably 0; the range of c is 0-1, preferably 0.5; this parameter selection makes the size of the reflective groove 16 gradually change more gradually, achieving uniform light output, more delicate light output, and a wider light output surface 15. It should be noted that the values of a, b and c can be adaptively adjusted according to the specific lighting module parameters, and the algorithm parameters can be adjusted to achieve a gradual effect of different dot sizes. The spacing between adjacent reflective grooves 16 can also be changed to achieve dot density, size changes, and adjust uniformity, which has a wide range of applications.
[0045] In this embodiment, the spacing between adjacent reflective grooves 16 is 4 mm. As the diameter of the reflective grooves 16 gradually increases, the area occupied by the dots gradually increases while the spacing remains unchanged, thereby improving the uniformity of light output.
[0046] Preferably, if Figure 1-Figure 3 As shown, the light incident surface 12 is a smooth plane to improve the light incident efficiency. Further preferably, the light emitting surface 15 is an etched surface to make the light emission more uniform.
[0047] In this embodiment, the inner wall of the light guide 1 and the outer wall of the light guide 1 are both arc-shaped surfaces. The arc length of the outer wall of the light guide 1 ranges from 40.0 mm to 60.0 mm, preferably 50.0 mm; the distance between the upper vertex of the arc of the outer wall of the light guide 1 and the central axis of the light guide 1 is between 130.0 mm and 170.0 mm; the distance between the lower vertex of the arc of the outer wall of the light guide 1 and the central axis of the light guide 1 is between 90.0 mm and 140.0 mm.
[0048] It should be noted that if Figure 1-Figure 3As shown, this embodiment further provides a speaker, comprising a speaker body 3 and the above-mentioned light guide structure for a speaker, wherein the speaker body 3 is arranged in the accommodating cavity 11 of the light guide member 1. An opening is arranged at one end of the accommodating cavity 11 away from the light incident surface 12, and the speaker body 3 is installed in the accommodating cavity 11 through the opening. After the speaker body 3 is installed, a part of the inner wall of the accommodating cavity 11 is shielded, and the part of the inner wall of the accommodating cavity 11 shielded by the speaker body 3 forms a first light reflecting surface 14, and the part of the inner wall of the accommodating cavity 11 not shielded by the speaker body 3 forms a light emitting surface 15.
[0049] Furthermore, the speaker box also includes a shell component 4 and a circuit board. The light guide structure and circuit board for the speaker box are arranged in the shell component 4. The circuit board is located on the side of the light board 2 away from the light guide member 1. The light board 2 and the speaker box body 3 are electrically connected to the circuit board. The circuit board can control the operation of the speaker box body 3 and the light board 2. In this embodiment, the shell component 4 includes a shell 41 and an end plate 42. The end plate 42 is detachably connected to the first end of the shell 41. When the end plate 42 is removed from the first end of the shell 41, the light guide member 1 can be installed in the shell 41 through the first end of the shell 41. Then the end plate 42 is connected to the first end of the shell 41. The end plate 42 is pressed against the end of the light guide member 1 away from the light incident surface 12, so that the light guide member 1 is fixed in the shell 41. The end plate 42 can shield the light guide member 1 and prevent the light guide member 1 from leaking light, so that the light of the light guide member 1 is emitted only from the light exit surface 15, thereby improving the appearance quality.
[0050] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. A light guide structure for a sound box, characterized in that: include: A light guide (1), the light guide (1) being provided with a receiving cavity (11), the receiving cavity (11) being used to receive a sound box body (3); One end of the light guide (1) forms a light incident surface (12), the outer wall of the light guide (1) forms a second light reflecting surface (13), the inner wall of the light guide (1) forms a first light reflecting surface (14) and a light emitting surface (15), and the first light reflecting surface (14) is located on a side of the light emitting surface (15) close to the light incident surface (12); The cross-sectional area of the inner wall of the light guide (1) and the cross-sectional area of the outer wall of the light guide (1) gradually increase in a direction away from the light incident surface (12); A light board (2), wherein the light board (2) is arranged on one side of the light incident surface (12), and light from the light board (2) can be irradiated onto the light incident surface (12).
2. The light guide structure for a sound box according to claim 1, characterized in that: The second reflective surface (13) is provided with a plurality of reflective grooves (16); the plurality of reflective grooves (16) form mesh points.
3. The light guide structure for a sound box according to claim 2, characterized in that: The density of the dots gradually increases from the light incident surface (12) toward the light exiting surface (15).
4. The light guide structure for a sound box according to claim 2, characterized in that: The diameter of the reflective groove (16) gradually increases from the light incident surface (12) towards the light exiting surface (15).
5. The light guide structure for a sound box according to claim 1, characterized in that: The first reflective surface (14) is provided with a plurality of reflective grooves (16), and the plurality of reflective grooves (16) form mesh points.
6. The light guide structure for a sound box according to claim 1, characterized in that: The light incident surface (12) is a smooth plane.
7. The light guide structure for a sound box according to claim 1, characterized in that: The light emitting surface (15) is a textured surface.
8. The light guide structure for a sound box according to claim 1, characterized in that: The second reflective surface (13) is a frosted surface.
9. A sound box, characterized in that: It comprises a sound box body (3) and a light guide structure for a sound box as claimed in any one of claims 1 to 8, wherein the sound box body (3) is arranged in a receiving cavity (11) of a light guide member (1).
10. The speaker according to claim 9, characterized in that: The speaker box further comprises a housing component (4) and a circuit board. The light guide structure for the speaker box and the circuit board are arranged in the housing component (4). The circuit board is located on a side of the light board (2) away from the light guide member (1). The light board (2) and the speaker box body (3) are electrically connected to the circuit board.