Light guide and electric appliance housing

Abstract

The application relates to the field of light guide members, and provides a light guide member and an electric appliance shell. The light guide member comprises a light guide plate and a light guide column. The light guide plate is provided with a first reflection surface and a second reflection surface oppositely arranged along the thickness direction of the light guide plate, and two light exit surfaces oppositely arranged along the width direction of the light guide plate. The light guide column is protruded on the side of the first reflection surface away from the second reflection surface and is arranged in one-to-one correspondence with a light source. The light guide plate is provided with an inner concave reflection surface arranged in one-to-one correspondence with the light guide column. The inner concave reflection surface is arranged in a recessed manner from the second reflection surface towards the first reflection surface and is used for reflecting the light conducted by the light guide column towards the two light exit surfaces. Based on the above structure, the light guide member can have high directivity, high uniformity, high brightness efficiency and high-quality light emitting effect.

Description

Technical Field

[0001] This application belongs to the field of light guide component technology, and particularly relates to a light guide component and an electrical appliance housing. Background Technology

[0002] The casing of electrical appliances such as shavers typically uses light guides to direct light from a light source to a predetermined area to create the desired luminous effect, thereby achieving the purpose of indication, improving the user experience, and enhancing the product's aesthetics. However, existing light guides suffer from poor luminous effect. Utility Model Content

[0003] This application provides a light guide component, which aims to solve the problem of poor light emission effect in existing light guide components.

[0004] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows: In a first aspect, a light guide element is provided, comprising: A light guide plate has a first reflective surface and a second reflective surface arranged opposite to each other along its thickness direction, and two light-emitting surfaces arranged opposite to each other along its width direction; A light guide post is protruding from the side of the first reflective surface facing away from the second reflective surface, and is arranged in a one-to-one correspondence with the light source; The light guide plate is provided with concave reflective surfaces that correspond one-to-one with the light guide columns. The concave reflective surfaces are recessed from the second reflective surface toward the first reflective surface, and are used to reflect the light transmitted by the light guide columns toward the two light-emitting surfaces.

[0005] In some embodiments, the concave reflective surface includes two first reflective inclined surfaces disposed opposite to each other along the width direction of the light guide plate, the distance between the two first reflective inclined surfaces gradually decreasing along the direction close to the light guide post, and the sides of the two first reflective inclined surfaces close to the light guide post adjoining each other.

[0006] In some embodiments, the concave reflective surface includes two first reflective surfaces disposed opposite to each other along the length direction of the light guide plate. The first reflective surfaces are conical surfaces and are connected between the two first reflective inclined surfaces.

[0007] In some embodiments, the first reflective surface includes a first plate surface and two first transition surfaces, the two first transition surfaces being respectively transitioned from the first plate surface to the two light-emitting surfaces; the first transition surface includes a second reflective inclined surface connected to the first plate surface, and a third reflective inclined surface connected between the second reflective inclined surface and the light-emitting surface, the distance between the second reflective inclined surface and the third reflective inclined surface being gradually reduced in a direction away from the second reflective surface.

[0008] In some embodiments, the first transition surface is provided with a textured surface; And / or, the light-emitting surface is provided with a textured surface.

[0009] In some embodiments, the second reflective surface includes a second plate surface and two second transition surfaces, the two second transition surfaces being respectively transitioned from the second plate surface to the two light-emitting surfaces; the second transition surface includes a fourth reflective inclined surface connected to the second plate surface, and a fifth reflective inclined surface connected between the fourth reflective inclined surface and the light-emitting surface, the distance between the fourth reflective inclined surface and the fifth reflective inclined surface being gradually reduced along the direction close to the first reflective surface.

[0010] In some embodiments, the fourth reflective slope is provided with a light-amplifying surface recessed toward the interior of the light guide plate, and the extending direction of the light-amplifying surface is parallel to the extending direction of the light-emitting surface. The light-amplifying surface is an arc surface.

[0011] In some embodiments, the end of the light guide column away from the light guide plate is provided with a focusing groove, and the light source is disposed in the focusing groove; Wherein, the outer peripheral surface of the end of the light guide post away from the light guide plate is provided with a first focusing surface, the cross-sectional dimension of the first focusing surface gradually expands along the direction close to the light guide plate; and / or, the wall of the focusing groove forms a second focusing surface, the cross-sectional dimension of the second focusing surface gradually shrinks along the direction close to the light guide plate; and / or, the bottom of the focusing groove protrudes toward the side away from the light guide plate and forms a third focusing surface, the cross-sectional dimension of the third focusing surface gradually shrinks along the direction away from the light guide plate.

[0012] In some embodiments, the light-emitting surface has a first side connected to the first reflective surface and a second side connected to the second reflective surface, wherein the first side is inclined outward relative to the second side; And / or, the light guide plate has an avoidance structure on one side along its length direction, and the avoidance structure is provided through the thickness direction of the light guide plate; And / or, the light guide plate and the light guide column are integrally formed structures.

[0013] Secondly, an electrical appliance housing is provided, including the light guide provided in the embodiments of this application.

[0014] The beneficial effects of the light guide provided in this application are as follows: The light guide provided in this application embodiment can improve light utilization, brightness of the light-emitting surface, and overall luminous efficacy (i.e., luminous flux / light source luminous flux) by focusing and directionally transmitting light through the light guide column, while reducing ineffective losses. It can also gradually offset the angular differences of light by using multiple reflections from the concave reflective surface, the first reflective surface, and the second reflective surface, causing the light to be dispersed to different areas of the light guide plate, resulting in uniform light distribution upon reaching the light-emitting surface, thereby improving luminous uniformity. Furthermore, it possesses directional light emission characteristics based on the directional light emission effect from both sides of the light-emitting surface, making it suitable for scenarios requiring "side lighting" (such as side indicator lights on equipment (e.g., appliance casings), backlighting on display screen bezels, etc.). Therefore, the light guide can achieve a high-quality luminous effect with high directionality, high uniformity, and high brightness efficiency. Attached Figure Description

[0015] To clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A perspective view of a light guide provided in some embodiments of this application; Figure 2 for Figure 1 Rear view of the provided light guide; Figure 3 for Figure 2 The provided sectional view along AA; Figure 4 A front view of a light guide provided in other embodiments of this application; Figure 5 for Figure 4 Provided sectional view along BB; Figure 6 for Figure 4 A three-dimensional schematic diagram of the provided light guide component.

[0017] The following are the labeling elements in the figure: 10-Light guide plate, 11-First reflecting surface, 111-First plate surface, 112-First transition surface, 1121-Second reflecting slope, 1122-Third reflecting slope, 1123-Second reflecting curved surface, 1124-Transition plane; 12-Second reflecting surface, 121-Second plate surface, 122-Second transition surface, 1221-Fourth reflecting slope, 12211-Light amplifying surface, 1222-Fifth reflecting slope; 13-Light emitting surface, 131-First side, 132-Second side; 14-Concave reflecting surface, 141-First reflecting slope, 142-First reflecting curved surface; 15-Avoidance structure; 20-Light guide column, 21-First focusing curved surface, 22-Focusing groove, 221-Second focusing curved surface, 222-Third focusing curved surface, x-Length direction, y-Width direction, z-Thickness direction. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clear, the application will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application. Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions. Unless otherwise specified, all technical features and optional technical features of this application can be combined to form new technical solutions.

[0019] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] To illustrate the technical solutions provided in this application, the following detailed description is provided in conjunction with specific drawings and embodiments.

[0023] Please see Figure 1 , Figure 2 , Figure 3 Some embodiments of this application provide a light guide component, including a light guide plate 10 and a light guide post 20. The light guide plate 10 has a first reflective surface 11 and a second reflective surface 12 arranged opposite to each other along its thickness direction z, and two light-emitting surfaces 13 arranged opposite to each other along its width direction y. The light guide post 20 protrudes from the side of the first reflective surface 11 facing away from the second reflective surface 12 and is arranged in a one-to-one correspondence with the light source. The light guide plate 10 is provided with a concave reflective surface 14 arranged in a one-to-one correspondence with the light guide post 20. The concave reflective surface 14 is recessed from the second reflective surface 12 toward the first reflective surface 11 and is used to reflect the light transmitted by the light guide post 20 toward the two light-emitting surfaces 13.

[0024] It should be noted that the number of light sources can be one or more (e.g., 1 to 3). Correspondingly, the number of light guide pillars 20 is equal to the number of light sources, and the positions of the light guide pillars 20 correspond to the positions of the light sources. Each light guide pillar 20 is paired with a light source, allowing the light source to emit light towards the light guide pillar 20, which in turn focuses and conducts the emitted light. Similarly, the number of concave reflective surfaces 14 is equal to the number of light guide pillars 20, and the positions of the concave reflective surfaces 14 correspond to the positions of the light guide pillars 20. Each concave reflective surface 14 is paired with a light guide pillar 20, allowing the concave reflective surfaces 14 to primarily reflect the light transmitted from the light guide pillars 20 to both sides of the light guide plate 10 along the width direction y, i.e., to the two light-emitting surfaces 13. In some embodiments, the light source can be, but is not limited to, a top-emitting LED (Light-Emitting Diode), etc. The color of the light source is not limited; for example, it can be a yellow-green LED, etc.

[0025] The light guide can be made of, but is not limited to, high-molecular polymer materials, to provide excellent light transmittance, ease of processing, and moderate cost. For example, the light guide can be made of polycarbonate (PC), polymethyl methacrylate (PMMA, commonly known as acrylic), or polystyrene (PS). In some embodiments, a diffusing material can be added to the light guide to improve its light guiding performance and optimize its luminescence effect.

[0026] Based on the above configuration, the basic light guiding principle of the light guide component is as follows: the light guide post 20 concentrates the light emitted by the light source within the light guide post 20 to reduce meaningless scattering of light into the surrounding environment, and guides the light directionally to guide the light along the light guide post 20 to the light guide plate 10 and illuminate the concave reflective surface 14 directly opposite the light guide post 20; the concave reflective surface 14 can mainly reflect the light transmitted from the light guide post 20 to both sides of the light guide plate 10 along the width direction y, so as to basically avoid the light leakage in the thickness direction z of the light guide plate 10 (i.e., to the outside of the first reflective surface 11 and the outside of the second reflective surface 12). Furthermore, it causes the light to be mainly guided towards the two light-emitting surfaces 13 within the light guide plate 10. Among the light reflected by the concave reflective surface 14, some light can be directly guided towards the light-emitting surface 13, while some light may be reflected by the first reflective surface 11 or the second reflective surface 12 due to angular deviation, thus undergoing multiple reflections to adjust the propagation direction and continuously guiding towards the light-emitting surface 13. Finally, the light guided by direction and subjected to multiple reflections will reach the two light-emitting surfaces 13 along the width direction y of the light guide plate 10 and be emitted from the light-emitting surfaces 13, thus completing the light guiding process and enabling the light guide to achieve the directional light emission effect of side-emitting light from both sides.

[0027] Based on this, the light guide provided in this application embodiment can improve light utilization, brightness of the light-emitting surface 13, and overall luminous efficacy (i.e., light output flux / light source flux) by focusing and directionally transmitting light through the light guide column 20, and reduce ineffective losses; it can gradually offset the angular differences of light by using multiple reflections from the concave reflective surface 14, the first reflective surface 11, and the second reflective surface 12, causing the light to be dispersed to different areas of the light guide plate 10, and causing the light to be evenly distributed when it reaches the light-emitting surface 13, thereby improving the uniformity of light emission; it can also have directional light emission characteristics based on the directional light emission effect from the side light-emitting surfaces 13 on both sides, and is suitable for scenarios that require "side lighting" (such as side indicator lights of equipment (such as appliance casings, etc.), backlighting of display screen bezels, etc.); thus, the light guide can have a high-quality light emission effect with high directionality, high uniformity, and high brightness efficiency.

[0028] like Figure 1 , Figure 2 , Figure 3As shown, in some embodiments, along the thickness direction z of the light guide plate 10, the projected shape of the concave reflective surface 14 is the same as the projected shape of the corresponding light guide post 20 (e.g., both are waist-shaped, etc.), and the projected area of ​​the concave reflective surface 14 and the projected area of ​​the corresponding light guide post 20 are approximately equal (they can be equal, slightly smaller, or slightly larger). This arrangement facilitates efficient and comprehensive reflection of the light transmitted from the light guide post 20 by the concave reflective surface 14, reduces light leakage in the interface area, and reduces the risk of light leakage caused by shape or size mismatch leading to some light not being reflected by the concave reflective surface 14, thereby improving light utilization.

[0029] Please see Figure 1 , Figure 2 , Figure 3 In some embodiments of this application, the concave reflective surface 14 includes two first reflective inclined surfaces 141 arranged opposite to each other along the width direction y of the light guide plate 10. The distance between the two first reflective inclined surfaces 141 is gradually reduced along the direction close to the light guide post 20, and the sides of the two first reflective inclined surfaces 141 close to the light guide post 20 are adjacent to each other.

[0030] It should be noted that, of the two first reflecting inclined surfaces 141, one of the first reflecting inclined surfaces 141 is inclined toward the guide light column 20 and one of the light-emitting surfaces 13, and can reflect the light transmitted from the guide light column 20 toward the light-emitting surface 13; the other first reflecting inclined surface 141 is inclined toward the guide light column 20 and the other light-emitting surface 13, and can reflect the light transmitted from the guide light column 20 toward the light-emitting surface 13.

[0031] In this configuration, the two first reflective inclined surfaces 141 are adjacent to each other on the side closest to the light guide post 20, forming an intersecting line. In some embodiments, the intersecting line of the two first reflective inclined surfaces 141 passes through the central axis of the light guide post 20, so that the two first reflective inclined surfaces 141 are symmetrically distributed about the central axis of the light guide post 20. This arrangement facilitates the uniform reception of light from the light guide post 20 by the two first reflective inclined surfaces 141, reduces the problem of one side of the light-emitting surface 13 having higher brightness and the other side having lower brightness due to the offset of the inclined surfaces, and helps to improve the uniformity of light emission.

[0032] Each of the first reflective inclined surfaces 141 is set at an angle to the central axis of the light guide post 20. In some embodiments, the angle between the first reflective inclined surface 141 and the central axis of the light guide post 20 can be 30° to 60° (e.g., 45°, etc.). This setting facilitates the orientation of the first reflective inclined surface 141 and reliably reflects the light transmitted from the light guide post 20 toward the direction closer to the light emitting surface 13.

[0033] By adopting the above scheme, the concave reflective surface 14 can accurately reflect the light transmitted from the light guide column 20 to the light-emitting surface 13 with a first reflective slope 141 that is inclined toward the light guide column 20 and one of the light-emitting surfaces 13; and can accurately reflect the light transmitted from the light guide column 20 to the light-emitting surface 13 with another first reflective slope 141 that is inclined toward the light guide column 20 and the other light-emitting surface 13. Thus, the concave reflective surface 14 can evenly and accurately split the light transmitted from the light guide column 20 to the light-emitting surfaces 13 on both sides, which can reduce the confusion or bias of the light reflection direction to one side. Based on this, the light reflection angle can be precisely controlled via the two first reflective inclined surfaces 141, reducing reflection deviation, improving reflection accuracy, optimizing the directionality of light towards the light-emitting surface 13, reducing ineffective light loss inside the light guide plate 10 due to uncontrolled reflection direction, stabilizing light guiding efficiency, and improving overall light efficiency. Furthermore, the two first reflective inclined surfaces 141 can facilitate a "uniform splitting" effect on the light, ensuring that the amount of light received by the light-emitting surfaces 13 on both sides is similar, thus enhancing the balance of light emission from both sides. Therefore, the light emission effect of the light guide can be optimized, ensuring that the overall lateral light emission effect of the light guide meets expectations.

[0034] Please see Figure 1 , Figure 2 , Figure 3 In some embodiments of this application, the concave reflective surface 14 includes two first reflective surfaces 142 arranged opposite to each other along the length x of the light guide plate 10. The first reflective surfaces 142 are conical surfaces and are connected between the two first reflective inclined surfaces 141.

[0035] It should be noted that, of the two first reflective surfaces 142, one first reflective surface 142 is connected between one end of the two first reflective inclined surfaces 141, and the other first reflective surface 142 is connected between the other end of the two first reflective inclined surfaces 141. That is, in the concave reflective surface 14, the first reflective inclined surface 141, the first reflective surface 142, the other first reflective inclined surface 141, and the other first reflective surface 142 are connected end to end in sequence to form a closed concave structure.

[0036] The phrase "the first reflecting surface 142 is a conical surface" means that the first reflecting surface 142 conforms to the characteristics of a conical surface, but does not mean that the first reflecting surface 142 is a complete conical conical surface.

[0037] By adopting the above scheme, the concave reflective surface 14 can adaptively reflect the light transmitted to it by the light guide column 20 via the conical first reflective surface 142 connected between the two first reflective inclined surfaces 141. In particular, by utilizing the arc characteristics of the conical surface, it provides corresponding reflection curvature for light with different incident angles, thereby enabling light that is not directly incident on the first reflective inclined surface 141 to be effectively captured and reflected to the light-emitting surfaces 13 on both sides. This can adapt to light from multiple angles, improve reflection coverage, reduce light loss or reflection direction deviation caused by angle deviation, and enhance the brightness uniformity and overall light guiding efficiency of the light-emitting surfaces 13 on both sides. Furthermore, the transition design of the conical surface connecting the two first reflective inclined surfaces 141 can basically eliminate the edge effect at the junction of the two adjacent surfaces (i.e., the edge at the junction may cause some light to scatter irregularly or the reflection direction to change abruptly at this point), reduce the energy loss and direction confusion of light at the junction of the two adjacent surfaces, and improve the reflection effect of the concave reflective surface 14.

[0038] Of course, in other embodiments, the concave reflective surface 14 may adopt other structural designs; for example, the concave reflective surface 14 may include four first reflective inclined surfaces 141 that are adjacent to each other in sequence; for another example, the concave reflective surface 14 may be a complete conical conical surface; and so on.

[0039] Please see Figure 1 , Figure 2 , Figure 3 In some embodiments of this application, the first reflective surface 11 includes a first plate surface 111 and two first transition surfaces 112, the two first transition surfaces 112 respectively transition from the first plate surface 111 to two light-emitting surfaces 13; the first transition surface 112 includes a second reflective inclined surface 1121 connected to the first plate surface 111, and a third reflective inclined surface 1122 connected between the second reflective inclined surface 1121 and the light-emitting surface 13, the distance between the second reflective inclined surface 1121 and the third reflective inclined surface 1122 is gradually reduced in the direction away from the second reflective surface 12.

[0040] It should be noted that in the first reflective surface 11, one of the first transition surfaces 112 transitions from one side of the first plate surface 111 along the width direction y to one of the light-emitting surfaces 13, and the other first transition surface 112 transitions from the other side of the first plate surface 111 along the width direction y to another light-emitting surface 13.

[0041] Each first transition surface 112 includes a second reflective inclined surface 1121 and a third reflective inclined surface 1122. The second reflective inclined surface 1121 connects the first plate surface 111 and the third reflective inclined surface 1122, and the third reflective inclined surface 1122 connects the second reflective inclined surface 1121 and the light-emitting surface 13. The second reflective inclined surface 1121 and the third reflective inclined surface 1122 are arranged at an angle, and the distance between the second reflective inclined surface 1121 and the third reflective inclined surface 1122 gradually decreases in the direction away from the second reflective surface 12, such that the second reflective inclined surface 1121 is inclined toward the third reflective inclined surface 1122, the second reflective surface 12 and the light-emitting surface 13, and the third reflective inclined surface 1122 is inclined toward the second reflective inclined surface 1121 and the second reflective surface 12.

[0042] By adopting the above scheme, the first reflective surface 11 can form a precise and efficient reflection guidance for the light reflected by the concave reflective surface 14 and conducted within the light guide plate 10 via the first transition surface 112, which is connected between the first plate surface 111 and the light-emitting surface 13. Specifically, the first transition surface 112 can correct the reflection of the light reflected by the second reflective surface 12 via the second reflective inclined surface 1121, causing the light to be reflected towards the third reflective inclined surface 1122, the area of ​​the second reflective surface 12 near the light-emitting surface 13, or the light-emitting surface 13, thereby causing the light to be conducted towards the light-emitting surface 13; the first transition surface 112 can receive the light reflected by the second reflective inclined surface 1121 or the second reflective surface 12 via the third reflective inclined surface 1122, and finely adjust the reflection angle of the light to promote Light is reflected towards the area of ​​the second reflecting surface 12 near the light-emitting surface 13, and can be guided to the light-emitting surface 13 with a more suitable reflection path. Thus, the first transition surface 112 can form a stepped reflection guidance for the light through the second reflecting inclined surface 1121 and the third reflecting inclined surface 1122, so as to stably, reliably and accurately guide the light to the light-emitting surface 13, reduce the loss of light during the reflection process, reduce the reflection blind zone caused by the angle limitation of a single reflecting surface, and thus improve the accuracy and efficiency of light transmission to the light-emitting surface 13.

[0043] Please see Figure 1 , Figure 2 , Figure 3 In some embodiments of this application, the first transition surface 112 includes a second reflective surface 1123 that transitionally connects the first plate surface 111 and the second reflective inclined surface 1121.

[0044] By adopting the above scheme, the first transition surface 112 can provide an adaptive reflection curvature for light rays that are transmitted from the first plate surface 111 to the second reflective surface 12 and reflected by the second reflective inclined surface 1123 via the second reflective curved surface 1123 connected between the first plate surface 111 and the second reflective inclined surface 1121. This buffered reflection allows the light rays to smoothly and stably enter the area of ​​the second reflective surface 12 near the light-emitting surface 13 or the reflection guidance range of the second reflective inclined surface 1121. Based on this, the scattering or reflection loss caused by the abrupt change in angle at the junction of different reflective surfaces can be reduced. The continuous curvature characteristics of the curved surface can be used to optimize the propagation of light during the transition process, allowing more light rays to be efficiently transmitted to the light-emitting surface 13 along a preset path. This optimizes the directionality and coherence of light transmission, and improves the overall light emission efficiency and uniformity.

[0045] Please see Figure 1 , Figure 2 , Figure 3 In some embodiments of this application, the first transition surface 112 includes a transition plane 1124 that transitionally connects the second reflective ramp 1121 and the third reflective ramp 1122.

[0046] By adopting the above scheme, a transition plane 1124 is added between the first transition surface 112 and the second reflection slope 1121 and the third reflection slope 1122. With the help of the stable reflection characteristics of the plane, a buffer connection is formed at the angle transition between the two, reducing the sudden change in reflection angle caused by the direct connection of the slopes, reducing the scattering or reflection loss of light at this point, and enabling the light reflected to be reflected to the second reflection surface 12 or the light-emitting surface 13 with a more suitable reflection path. This can improve the continuity and accuracy of light transmission, and help more light rays to be efficiently guided to the light-emitting surface 13 along a preset path, thereby enhancing the uniformity of light output and the overall light effect.

[0047] Of course, in other embodiments, the first reflective surface 11 may adopt other structural designs; for example, the first transition surface 112 of the first reflective surface 11 may be a wavy surface with multiple bends; or, for example, the first transition surface 112 of the first reflective surface 11 may include multiple planes that are connected in sequence, have multiple bends, and are in the shape of broken lines, etc.

[0048] Please see Figure 1 , Figure 2 , Figure 3 In some embodiments of this application, the first transition surface 112 is provided with a textured surface. The textured surface is a fine uneven texture structure formed on the surface of a material by a mold surface treatment technology (such as chemical etching, sandblasting, etc.), which has the function of producing diffuse reflection or scattering effect on light.

[0049] By adopting the above scheme, by setting the first transition surface 112 with a texture, the micro-uneven structure of the texture can form a delicate diffuse reflection effect on the light. Based on this, the light reflected by the first transition surface 112 can be dispersed, the angular concentration of the light can be weakened, and the light can be evenly distributed to different areas of the light guide plate 10 during the transmission process. This can reduce the uneven brightness of the light-emitting surface 13 caused by excessive light concentration, thereby optimizing the light output brightness and light output uniformity. Furthermore, the texture can increase the contact probability between the light and the first transition surface 112, reduce light leakage or ineffective reflection caused by angular deviation, and finely adjust the reflection angle to assist the first transition surface 112 in guiding the light to the light-emitting surface 13, thereby improving the light emission uniformity, reducing light loss, enhancing the overall light efficiency, and making the light output effect of the light guide stable and of high quality.

[0050] Please see Figure 1 , Figure 2 , Figure 3 In some embodiments of this application, the light-emitting surface 13 is provided with a textured surface.

[0051] By adopting the above solution, by setting a texture on the light-emitting surface 13 of the light guide, the texture can disperse the local bright spots or differences in brightness that may have been caused by the concentration of angles. The fine texture can diffuse the light, so as to promote the even distribution of light during emission, thereby improving the uniformity of light emission. The texture can also soften the light emission effect, avoid the light being too glaring, and promote the stable emission of light from the light-emitting surface 13, reduce the light emission loss caused by the deviation of the direct angle of light, thereby improving the light emission brightness, optimizing the light emission effect, and forming a soft, uniform and bright light emission effect.

[0052] Please see Figure 1 , Figure 2 , Figure 3 In some embodiments of this application, the second reflective surface 12 includes a second plate surface 121 and two second transition surfaces 122, the two second transition surfaces 122 respectively transition from the second plate surface 121 to the two light-emitting surfaces 13; the second transition surface 122 includes a fourth reflective inclined surface 1221 connected to the second plate surface 121, and a fifth reflective inclined surface 1222 connected between the fourth reflective inclined surface 1221 and the light-emitting surface 13, the distance between the fourth reflective inclined surface 1221 and the fifth reflective inclined surface 1222 is gradually reduced in the direction close to the first reflective surface 11.

[0053] It should be noted that in the second reflective surface 12, one of the second transition surfaces 122 is connected to one of the light-emitting surfaces 13 from one side of the second plate surface 121 along the width direction y, and the other second transition surface 122 is connected to the other light-emitting surface 13 from the other side of the second plate surface 121 along the width direction y.

[0054] Each second transition surface 122 includes a fourth reflective inclined surface 1221 and a fifth reflective inclined surface 1222. The fourth reflective inclined surface 1221 connects the second plate surface 121 and the fifth reflective inclined surface 1222, and the fifth reflective inclined surface 1222 connects the fourth reflective inclined surface 1221 and the light-emitting surface 13. The fourth reflective inclined surface 1221 and the fifth reflective inclined surface 1222 are set at an angle, and the distance between the fourth reflective inclined surface 1221 and the fifth reflective inclined surface 1222 gradually decreases in the direction close to the first reflective surface 11, so that the fourth reflective inclined surface 1221 is inclined toward the first reflective surface 11 (the second reflective curved surface 1123 and the second reflective inclined surface 1121), and the fifth reflective inclined surface 1222 is inclined toward the first reflective surface 11 (the third reflective inclined surface 1122 and the transition plane 1124) and the light-emitting surface 13.

[0055] By adopting the above scheme, the second reflective surface 12 can form a precise and efficient reflection guidance for the light reflected by the concave reflective surface 14 and transmitted within the light guide plate 10 via the second transition surface 122, which is connected between the second plate surface 121 and the light-emitting surface 13. Specifically, the second transition surface 122 can correct and reflect the light transmitted from the first plate surface 111 to the second reflective surface 12 via the fourth reflective inclined surface 1221, causing the light to be reflected towards the first reflective surface 11 (the second reflective curved surface 1123 and the second reflective inclined surface 1121), and thus causing the light to be transmitted towards the light-emitting surface 13. The second transition surface 122 can receive the light reflected from the first reflective surface 11 via the fifth reflective inclined surface 1222, and finely adjust the reflection angle of the light, so that the light can be guided to the light-emitting surface 13 with a more suitable reflection path. Thus, the second transition surface 122 can form a stepped reflection guidance of the light via the fourth reflective inclined surface 1221 and the fifth reflective inclined surface 1222, so as to stably, reliably and accurately guide the light to the light-emitting surface 13, reduce the loss of light during the reflection process, reduce the reflection blind zone caused by the angle limitation of a single reflective surface, and thus improve the accuracy and efficiency of light transmission to the light-emitting surface 13.

[0056] Of course, in other embodiments, the second reflective surface 12 may adopt other structural designs; for example, the second transition surface 122 of the second reflective surface 12 may be a multi-bent, wavy surface; and so on.

[0057] Please see Figure 4 , Figure 5 , Figure 6 In some embodiments of this application, the fourth reflective slope 1221 is provided with a light-amplifying surface 12211 recessed towards the interior of the light guide plate 10, and the extending direction of the light-amplifying surface 12211 is parallel to the extending direction of the light-emitting surface 13. The fourth reflective slope 1221 may be provided with one or more (e.g., three) light-amplifying surfaces 12211.

[0058] By adopting the above scheme, light can be guided to diffuse along the extension direction of the light-expanding surface 12211 via the light-expanding surface 12211 and reflected towards the first reflecting surface 11 (the second reflecting curved surface 1123 and the second reflecting inclined surface 1121). Based on this, the concentration of light in local areas can be reduced, and the light can be distributed more evenly along the extension direction of the light-emitting surface 13 within the light guide plate 10. This can improve the light emission uniformity of the light-emitting surface 13, reduce the brightness difference caused by light concentration, and reduce the local bright spots or dark areas formed by light concentration.

[0059] Please see Figure 4 , Figure 5 , Figure 6 In some embodiments of this application, the light-expanding surface 12211 is an arc surface, that is, the cross-sectional shape of the light-expanding surface 12211 perpendicular to its extension direction is arc-shaped.

[0060] By adopting the above scheme, light can be guided to diffuse along the extension direction of the arc-shaped light-expanding surface 12211, and the light can be guided to reflect at different curvature positions of the arc surface, so that the light can be reflected to the first reflecting surface 11 in a more dispersed manner at a variety of reflection angles. Based on this, the angle change of the light during the diffusion process can be made softer, and the sudden change of light direction or local light concentration caused by planar reflection can be reduced. Thus, the light can be distributed delicately and evenly along the extension direction of the light-emitting surface 13 in the light guide plate 10, which can reduce local brightness differences and improve the light emission uniformity of the light-emitting surface 13.

[0061] Of course, in other embodiments, the light-expanding surface 12211 may adopt other structural designs; for example, the light-expanding surface 12211 may be a wavy surface with multiple bends; or for example, the light-expanding surface 12211 may include multiple planes that are connected in sequence and bend in multiple ways (for example, three planes that are connected in sequence and bend in multiple ways to form a rectangular shape), and so on.

[0062] Please see Figure 4 , Figure 5 , Figure 6 In some embodiments of this application, a focusing groove 22 is provided at the end of the light guide post 20 away from the light guide plate 10, and the light source is disposed in the focusing groove 22. That is, the light source is located on the inner side of the end of the light guide post 20 away from the light guide plate 10.

[0063] By adopting the above scheme, by placing the light source in the focusing groove 22 at the end of the light guide column 20 away from the light guide plate 10, the light emitted by the light source can be initially focused by the focusing groove 22 when it enters the light guide column 20. This can reduce the scattering loss of light to the outside of the light guide column 20, and allow more light to directly enter the interior of the light guide column 20. This can improve the light utilization rate from the source and help improve the overall light efficiency and light output brightness of the light guide component.

[0064] Of course, in other embodiments, the light source may be located on the outside of the end of the light guide post 20 away from the light guide plate 10.

[0065] Please see Figure 4 , Figure 5 , Figure 6 In some embodiments of this application, the outer peripheral surface of the end of the light guide post 20 away from the light guide plate 10 is provided with a first focusing surface 21, and the cross-sectional dimensions of the first focusing surface 21 are gradually expanded along the direction close to the light guide plate 10.

[0066] It should be noted that, since the light source is located in the focusing groove 22 at the end of the light guide post 20 away from the light guide plate 10, the light emitted by the light source may be directed from inside the light guide post 20 to the first focusing surface 21. At the first focusing surface 21, the light is equivalent to being directed from an optically denser medium (the material of the light guide post 20) to an optically less dense medium (air). When the angle of incidence is greater than the critical angle, total internal reflection will occur, that is, the first focusing surface 21 can completely reflect the light back into the light guide post 20.

[0067] By adopting the above scheme, for the large-angle divergent light emitted by the light source in the focusing groove 22 and directed towards the first focusing surface 21, the special shape of the first focusing surface 21 can trigger total internal reflection of these light rays. This fully utilizes the principle of total internal reflection to focus the divergent light emitted by the light source, thereby reducing light leakage. Furthermore, during the total internal reflection process, the curvature design of the first focusing surface 21 guides the reflected light rays to deflect along the central axis of the light guide column 20, causing the light rays to converge and form nearly parallel, collimated light that propagates axially along the light guide column 20. As a result, the focusing and guiding effects of the light guide column 20 can be enhanced, the directionality of light transmission can be improved, and the light can enter the light guide plate 10 and be directed towards the concave reflective surface 14 in a concentrated and directional state, which is beneficial for optimizing the uniformity and brightness of light emission.

[0068] Please see Figure 4 , Figure 5 , Figure 6 In some embodiments of this application, the wall of the focusing groove 22 forms a second focusing surface 221, and the cross-sectional dimensions of the second focusing surface 221 are gradually reduced along the direction close to the light guide plate 10.

[0069] By adopting the above scheme, the light emitted from the light source towards the wall of the focusing groove 22 can be refracted via the second focusing surface 221 to concentrate the light and correct its direction, thereby causing the light to converge and form nearly parallel, collimated light that propagates axially along the light guide post 20. Based on this, the outward scattering loss of light can be reduced, the accuracy and efficiency of light transmission to the concave reflective surface 14 can be improved, and the light transmission loss caused by directional confusion can be reduced, which is conducive to improving the uniformity and brightness of the emitted light and enhancing the overall light efficiency of the light guide.

[0070] Please see Figure 4 , Figure 5 , Figure 6 In some embodiments of this application, the bottom of the focusing groove 22 protrudes toward the side away from the light guide plate 10 and forms a third focusing surface 222, and the cross-sectional dimensions of the third focusing surface 222 are gradually reduced along the direction away from the light guide plate 10.

[0071] By adopting the above scheme, the light emitted from the light source towards the bottom of the focusing groove 22 can be refracted via the third focusing surface 222, thereby converging the light and correcting its direction. This causes the light to converge and form nearly parallel, collimated light that propagates axially along the light guide column 20. Based on this, the outward scattering loss of light can be reduced, the accuracy and concentration of light transmission can be enhanced, and the light transmission loss caused by directional confusion can be reduced, thus improving the light output uniformity, brightness, and overall light efficiency of the light guide.

[0072] It should be noted that the embodiments of the first focusing surface 21, the second focusing surface 221, and the third focusing surface 222 can be selected, combined in pairs, or all three can be combined.

[0073] Please see Figure 3 , Figure 5 In some embodiments of this application, the light-emitting surface 13 has a first side 131 connected to the first reflective surface 11 and a second side 132 connected to the second reflective surface 12, with the first side 131 being inclined outward relative to the second side 132.

[0074] By adopting the above scheme, and by setting the first side 131 of the light-emitting surface 13 outward relative to the second side 132, the light reaching the light-emitting surface 13 can be optimized for better light output. Specifically, when light is transmitted to the light-emitting surface 13, the tilted light-emitting surface 13 can adjust the angle between the light and the interface, making the incident angle of more light rays smaller than the critical angle, reducing the reflection loss that may occur due to vertical light output, and allowing more light rays to be emitted laterally in the expected direction, thereby improving the light output efficiency. Furthermore, the tilted design of the light-emitting surface 13 can work with the reflection mechanism inside the light guide plate 10 to relatively balance the light distribution in different areas of the two light-emitting surfaces 13, reduce edge brightness deviation, and optimize uniformity. Thus, the light output effect of lateral emission from the two light-emitting surfaces 13 can be optimized.

[0075] Of course, in other embodiments, the second side 132 of the light-emitting surface 13 may be inclined outward relative to the first side 131; or, the first side 131 and the second side 132 of the light-emitting surface 13 may be aligned along the thickness direction z.

[0076] Please see Figure 1 , Figure 2 , Figure 3 In some embodiments of this application, a clearance structure 15 is provided on one side of the light guide plate 10 along its length direction x, and the clearance structure 15 is provided through the light guide plate 10 along its thickness direction z. The clearance structure 15 can be a hole structure, a groove structure, or other hollowed-out structure. The shape, size, and specific position of the clearance structure 15 can be flexibly set as needed.

[0077] By adopting the above solution, based on the avoidance structure 15, the light guide can avoid the spatial overlap area that may be formed with the shell body (such as the shell body of an electrical appliance) during assembly or use, thereby reducing the structural interference problem between the light guide and the shell body that it assembles with, and maintaining and improving the assembly smoothness and use stability of the light guide.

[0078] Please see Figure 1 , Figure 2 , Figure 3 In some embodiments of this application, the light guide plate 10 and the light guide post 20 are integrally formed structures.

[0079] By adopting the above solution, the light guide plate 10 and the light guide post 20 can be integrally molded using the same conductive medium, and the light transmission loss caused by the interface between the light guide plate 10 and the light guide post 20 can be largely avoided. This ensures smooth light transmission from the light guide post 20 to the light guide plate 10, improving light utilization. Furthermore, based on the integral molding process, the production process of the light guide component can be simplified, the assembly steps can be reduced, the risk of misalignment between the light guide post 20 and the concave reflective surface 14 due to assembly errors can be reduced, the processing accuracy of the light guide component can be improved, and the light guide component can achieve the expected light guiding effect. In addition, the overall structural strength of the light guide component can be enhanced, damage caused by component connection problems can be reduced, the reliability of use can be improved, the service life can be extended, and the needs of industrial mass production can be met.

[0080] Please see Figure 1 Some embodiments of this application provide an electrical appliance housing, including the light guide element provided in the embodiments of this application. The electrical appliance housing includes a main body, and the light guide element is fitted coverically to one side of the main body. The term "electrical appliance" can be, but is not limited to, an electrical appliance such as a shaving device.

[0081] By adopting the above solution, the electrical appliance casing can achieve the desired and high-quality light emission effect by using the light guide provided in the embodiments of this application, thereby realizing the indication function, improving the user experience, and enhancing the product's aesthetics.

[0082] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A light guide component, characterized in that, include: A light guide plate has a first reflective surface and a second reflective surface arranged opposite to each other along its thickness direction, and two light-emitting surfaces arranged opposite to each other along its width direction; A light guide post is protruding from the side of the first reflective surface facing away from the second reflective surface, and is arranged in a one-to-one correspondence with the light source; The light guide plate is provided with concave reflective surfaces that correspond one-to-one with the light guide columns. The concave reflective surfaces are recessed from the second reflective surface toward the first reflective surface, and are used to reflect the light transmitted by the light guide columns toward the two light-emitting surfaces.

2. The light guide component as described in claim 1, characterized in that, The concave reflective surface includes two first reflective inclined surfaces arranged opposite each other along the width direction of the light guide plate. The distance between the two first reflective inclined surfaces gradually decreases along the direction close to the light guide post, and the sides of the two first reflective inclined surfaces close to the light guide post are adjacent to each other.

3. The light guide component as described in claim 2, characterized in that, The concave reflective surface includes two first reflective surfaces arranged opposite each other along the length of the light guide plate. The first reflective surfaces are conical surfaces and are connected between the two first reflective inclined surfaces.

4. The light guide component as described in claim 1, characterized in that, The first reflective surface includes a first plate surface and two first transition surfaces, the two first transition surfaces being respectively transitioned from the first plate surface to the two light-emitting surfaces; the first transition surface includes a second reflective inclined surface connected to the first plate surface, and a third reflective inclined surface connected between the second reflective inclined surface and the light-emitting surface, the distance between the second reflective inclined surface and the third reflective inclined surface being gradually reduced in a direction away from the second reflective surface.

5. The light guide component as described in claim 4, characterized in that, The first transition surface is provided with a textured surface; And / or, the light-emitting surface is provided with a textured surface.

6. The light guide component as described in claim 1, characterized in that, The second reflective surface includes a second plate surface and two second transition surfaces, which are respectively transitioned from the second plate surface to the two light-emitting surfaces. The second transition surface includes a fourth reflective inclined surface connected to the second plate surface and a fifth reflective inclined surface connected between the fourth reflective inclined surface and the light-emitting surface. The distance between the fourth reflective inclined surface and the fifth reflective inclined surface is gradually reduced in the direction close to the first reflective surface.

7. The light guide component as described in claim 6, characterized in that, The fourth reflective inclined surface is provided with a light-expanding surface recessed towards the interior of the light guide plate, and the extending direction of the light-expanding surface is parallel to the extending direction of the light-emitting surface. The light-amplifying surface is an arc surface.

8. The light guide component as described in any one of claims 1-7, characterized in that, The end of the light guide column away from the light guide plate is provided with a focusing groove, and the light source is located in the focusing groove; Wherein, the outer peripheral surface of the end of the light guide post away from the light guide plate is provided with a first focusing surface, the cross-sectional dimension of the first focusing surface gradually expands along the direction close to the light guide plate; and / or, the wall of the focusing groove forms a second focusing surface, the cross-sectional dimension of the second focusing surface gradually shrinks along the direction close to the light guide plate; and / or, the bottom of the focusing groove protrudes toward the side away from the light guide plate and forms a third focusing surface, the cross-sectional dimension of the third focusing surface gradually shrinks along the direction away from the light guide plate.

9. The light guide component as described in claim 1, characterized in that, The light-emitting surface has a first side connected to the first reflective surface and a second side connected to the second reflective surface, and the first side is inclined outward relative to the second side; And / or, the light guide plate has an avoidance structure on one side along its length direction, and the avoidance structure is provided through the thickness direction of the light guide plate; And / or, the light guide plate and the light guide column are integrally formed structures.

10. An electrical appliance casing, characterized in that, Includes the light guide element as described in any one of claims 1-9.

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