CN214201827U - Light guide assembly and cosmetic mirror - Google Patents

Abstract

A light guide assembly and a cosmetic mirror, the light guide assembly comprising: a light guide plate and a frame body; the light guide plate comprises a ring-shaped main light guide part and a lead-in part connected with the main light guide part; the lead-in part is provided with a light inlet end which is arranged opposite to the light source; the frame body comprises a main frame part and a flange part connected with the main frame part; the main frame part is used for covering one side surface of the light guide plate; the flange part is arranged along the edge of the light guide plate; the extension length of the flange part is larger than or equal to the thickness of the light guide plate in the direction vertical to the light guide plate. After the light source generates light, the light enters the lead-in part from the light inlet end, and the lead-in part guides the light to the main light guide part. Because the main frame portion produces the cover to one side of the non-illumination light-emitting of light guide plate, flange portion produces the effect of sheltering from to the edge of light guide plate simultaneously to can prevent that light from leaking from one side or the edge of the non-light-emitting of light guide plate, reduce the loss of light conduction process in the leaded light subassembly, guarantee light conduction efficiency, avoid the not enough or power specification that need improve the lamp point of illumination luminance of vanity mirror.

Description

Light guide assembly and cosmetic mirror

Technical Field

The utility model relates to the technical field of daily necessities, especially, relate to a light guide assembly and vanity mirror.

Background

The prior cosmetic mirror is a stock item of each family, the types of the cosmetic mirror on the market are various, the common cosmetic mirror is easily influenced by the environment when in use, and particularly, when the ambient light is insufficient, the user can hardly see the image in the mirror clearly. Based on the problem, a cosmetic mirror with a light source is generated subsequently, and the problem that the user cannot clearly observe the face in a dim environment due to the fact that light generated by the light source is transmitted to the face of the user is solved.

In order to ensure the compactness of the cosmetic mirror, light is generated by using light points in the cosmetic mirror, wherein the light points can be elements such as LED lamp beads and the like. However, the light guide structure in the cosmetic mirror has a problem of light leakage, which causes a low light transmission efficiency, resulting in insufficient brightness of the light generated under a certain lamp power or requiring an increase in the power specification of the lamp.

SUMMERY OF THE UTILITY MODEL

Accordingly, it is desirable to provide a light guide assembly and a cosmetic mirror for solving the problem of light leakage in a light guide structure in a cosmetic mirror.

A light guide assembly, comprising:

the light guide plate comprises a ring-shaped main light guide part and a lead-in part connected with the main light guide part; the lead-in part is provided with a light inlet end, and the light inlet end is arranged opposite to the light source; and

the frame body comprises a main frame part and a flange part connected with the main frame part; the main frame part is used for covering one side surface of the light guide plate; the flange part is arranged along the edge of the light guide plate; the extension length of the flange part is greater than or equal to the thickness of the light guide plate in the direction perpendicular to the light guide plate.

According to the light guide assembly, after the light source generates light, the light enters the lead-in part from the light inlet end, the lead-in part guides the light to the main light guide part, so that the light is uniformly transmitted and reflected in the annular main light guide part, the light is projected to the face of a user from different angles, and a uniform lighting effect is obtained. Because the main frame portion produces the cover to one side of the non-illumination light-emitting of light guide plate, flange portion produces the effect of sheltering from to the edge of light guide plate simultaneously to can prevent that light from leaking from one side or the edge of the non-light-emitting of light guide plate, reduce the loss of light conduction process in the leaded light subassembly, guarantee light conduction efficiency, avoid the not enough or power specification that need improve the lamp point of illumination luminance of vanity mirror.

In one embodiment, the light guide plate has a plurality of lead-in parts which are uniformly arranged along the main light guide part; the lead-in part is connected with the inner ring side of the main light guide part; thereby providing uniformity of emergent light of the light guide plate and improving compactness of the light guide plate.

In one embodiment, the edge shape of the main frame part is close to or consistent with the edge shape of the light guide plate; the flange part is connected with the edge of the main frame part; thereby effectively improving the compactness of the light guide component.

In one embodiment, a reflecting layer is arranged between the main frame part and the light guide plate to reflect the light emitted to the main frame part back to the light guide plate; thereby further avoiding light energy loss in the light guide plate.

In one embodiment, the light guide plate further comprises a light diffusion plate which covers one side of the light guide plate, which faces back to the frame body; thereby, the light of the light guide plate becomes softer and the stimulation to the eyes of the user is prevented.

A cosmetic mirror comprising: the light guide module comprises a light guide module, a rear shell connected with the light guide module, a substrate arranged on the rear shell, a heat dissipation piece used for dissipating heat of the substrate and a main mirror body connected with the rear shell; one side of the substrate is connected with a lamp point which is used as a light source and is arranged opposite to the light inlet end of the lead-in part; the heat dissipation piece is abutted against the other side of the substrate; thereby reflecting the light to the face of the user from different angles, and the user can observe different parts of the face clearly.

In one embodiment, a plurality of the substrates are arranged at different parts of the rear shell; each substrate corresponds to at least one heat dissipation piece; the heat dissipation piece comprises a main piece part abutted against the other side of the substrate and a plurality of fin parts connected with one side of the main piece part, which is back to the substrate; thereby preventing the rear shell from melting due to the overheating of the lamp point or the overhigh temperature of the substrate, and being beneficial to prolonging the service life of the cosmetic mirror.

In one embodiment, the length direction of the main lens part is arranged in parallel with the mirror surface of the main mirror body; the fin part extends in parallel with the mirror surface of the main mirror body; a plurality of fin portions connecting the same main lens portion are distributed along a direction parallel to the main lens body; therefore, the extension length of the radiating piece in the thickness direction of the cosmetic mirror can be effectively controlled, and the thickness of the cosmetic mirror can be effectively controlled.

In one embodiment, the mirror further comprises a conductive sheet, wherein the conductive sheet is abutted with the back surface of the main mirror body; one side of the conduction piece, which is back to the main mirror body, is directly or indirectly abutted against the heat dissipation piece so as to transfer the heat of the heat dissipation piece to the conduction piece; therefore, the condensation of moist warm air flow on the surface of the main mirror body after contacting the main mirror body can be avoided, and the fuzzy fog surface is prevented from being formed on the whole or partial mirror surface of the main mirror body.

In one embodiment, the cosmetic mirror further comprises a concave mirror body, and a magnetic force action exists between the concave mirror body and the main body of the cosmetic mirror, so that the concave mirror body can be detachably attached to the outer side of the main mirror body; thereby being convenient for users to clearly observe local conditions.

Drawings

Fig. 1 is a front view of a cosmetic mirror according to an embodiment of the present invention;

FIG. 2 is an exploded view of the cosmetic mirror shown in FIG. 1, wherein the main mirror body and the conductive sheet are separated from the rear case, and the reflective layer, the light guide plate and the light-diffusing plate are hidden;

FIG. 3 is an exploded view of the vanity mirror shown in FIG. 2, wherein the base plate and heat sink are separated from the rear housing;

FIG. 4 is an enlarged view of the cosmetic mirror shown in FIG. 3 at A;

FIG. 5 is an exploded view of the vanity mirror of FIG. 1 in another state, wherein the primary mirror body and the conductive patch are hidden;

FIG. 6 is a partial schematic view of the cosmetic mirror shown in FIG. 1;

FIG. 7 is an enlarged view of the cosmetic mirror shown in FIG. 6 at B;

fig. 8 is a front view of the cosmetic mirror shown in fig. 1 after the addition of a concave mirror body.

The corresponding relation between each reference number and each meaning in the drawings is as follows:

100. a cosmetic mirror; 20. a light guide assembly; 21. a light guide plate; 211. a main light guiding part; 212. an introduction section; 213. a light inlet end; 22. a frame body; 221. a main frame part; 222. a flange portion; 23. a reflective layer; 24. a light-diffusing sheet; 30. a rear housing; 33. an accommodating groove; 34. a concave block; 36. a protective column; 37. a handle; 38. an energy storage member; 40. a substrate; 41. lighting; 42. a wiring terminal; 50. a heat sink; 51. a main sheet portion; 52. a fin portion; 60. a main mirror body; 61. a conductive sheet; 62. a concave mirror body.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 8, a light guide assembly 20 according to an embodiment of the present invention is used for guiding and reflecting light generated by a light spot 41 in a cosmetic mirror 100, so that the light is projected to the face of a user from different angles. The light guide assembly 20 includes: a light guide plate 21 and a frame 22; the light guide plate 21 includes a ring-shaped main light guide portion 211 and a lead-in portion 212 connected to the main light guide portion 211; the lead-in part 212 has a light-entering end 213, and the light-entering end 213 is arranged opposite to the light source; frame body 22 includes a main frame portion 221 and a flange portion 222 connected to main frame portion 221; the main frame part 221 covers one side surface of the light guide plate 21; the flange portion 222 is provided along the edge of the light guide plate 21; the extension length of the flange portion 222 in a direction perpendicular to the light guide plate 21 is greater than or equal to the thickness of the light guide plate 21.

After the light source generates light, the light enters the light-introducing portion 212 from the light-entering end 213, and the light is guided to the main light-guiding portion 211 by the light-introducing portion 212, so that the light is uniformly transmitted and reflected in the annular main light-guiding portion 211, and the light is projected to the face of a user from different angles, thereby obtaining a uniform illumination effect. Because the main frame part 221 covers the non-lighting side of the light guide plate 21, and the flange part 222 shields the edge of the light guide plate 21, light can be prevented from leaking out of the non-lighting side or edge of the light guide plate 21, loss of light in the light guide assembly 20 during the conduction process is reduced, light conduction efficiency is ensured, and insufficient illumination brightness of the cosmetic mirror 100 is avoided or the power specification of the light point 41 needs to be improved.

Specifically, to reduce light leakage in the light guide plate 21, the flange portion 222 has reflectivity. Alternatively, to improve the uniformity of the emitted light, scattering dots may be provided in the main light-guiding portion 211 to uniformly scatter the light to different parts of the user's face.

Referring to fig. 5, in one embodiment, the light guide plate 21 has a plurality of lead-in portions 212, and the lead-in portions 212 are uniformly disposed along the main light guide portion 211; the lead-in portion 212 is connected to the inner ring side of the main light guide portion 211. By providing a plurality of the introduction portions 212, light is introduced to different portions of the main light guide portion 211, and the light reflected by the light guide plate 21 is more uniform, and the introduction portions 212 are connected to the inner ring side of the main light guide portion 211, so that the compactness of the light guide plate 21 can be improved. Specifically, the lead-in portion 212 narrows and transitions from the light-entering end 213 to the main light-guiding portion 211.

Referring to fig. 5, in one embodiment, the edge shape of the main frame 221 is close to or consistent with the edge shape of the light guide plate 21; the flange portion 222 is connected to an edge of the main frame portion 221. Therefore, the main frame portion 221 can overlap the light guide plate 21 in shape and size, and the compactness of the light guide unit 20 is effectively improved.

Referring to fig. 5 and 7, in one embodiment, a reflective layer 23 is disposed between the main frame 221 and the light guide plate 21 to reflect the light emitted to the main frame 221 back into the light guide plate 21. Thus, the main frame part 221 can prevent the light in the light guide plate 21 from being absorbed, further prevent the light energy loss in the light guide plate 21, and emit the light from the other side of the light guide plate 21.

Referring to fig. 5 and fig. 7, in one embodiment, the light guide assembly 20 further includes a light diffuser 24, and the light diffuser 24 covers a side of the light guide plate 21 facing away from the frame 22. Through setting up the diffusion sheet 24, the light in the light guide plate 21 is after frame 22 outgoing dorsad, and light process diffusion sheet 24, diffusion sheet 24 make light homodisperse to can become more soft, prevent to cause the amazing to user's eye.

Referring to fig. 1 to 8, the present invention further provides a cosmetic mirror 100, including: the light guide module 20, the rear shell 30 connected with the light guide module 20, the substrate 40 installed on the rear shell 30, the heat sink 50 used for dissipating heat for the substrate 40, and the main mirror body 60 connected with the rear shell 30; one side of the substrate 40 is connected with a lamp point 41, and the lamp point 41 is used as a light source and is arranged opposite to the light inlet end 213 of the lead-in part 212; the heat sink 50 abuts the other side of the substrate 40. By energizing the lamp points 41 to generate light, after the light enters the introduction portion 212, the light is guided and reflected by the light guide plate 21,

specifically, the lamp point 41 is an LED lamp bead or other light-emitting component; the substrate 40 may be an aluminum substrate 40 or a substrate 40 made of other metal materials, and the substrate 40 is provided with a wiring terminal 42 and a circuit for electrically connecting the lamp points 41.

Referring to fig. 2 and 3, in one embodiment, a plurality of substrates 40 are mounted at different positions of the rear housing 30; each substrate 40 corresponds to at least one heat sink 50; the heat sink 50 includes a main piece portion 51 abutting the other side of the substrate 40 and a plurality of fin portions 52 connecting the main piece portion 51 to the side facing away from the substrate 40.

Since each of the plurality of substrates 40 is provided with the light points 41, and each of the substrates 40 and the light points 41 are respectively disposed at different positions on the rear case 30, the power and the generated heat of each of the light points 41 can be reduced under the condition of generating the same brightness, and the concentrated accumulation of heat in the cosmetic mirror 100 can be reduced. Meanwhile, because the lamp points 41 are fixedly attached to the substrate 40, the heat of the lamp points 41 is conducted to the substrate 40 made of metal, and the main sheet part 51 of the heat sink 50 is abutted against the other side of the substrate 40, so that the heat of the substrate 40 is rapidly transmitted to the heat sink 50 through the abutting surface between the main sheet part 51 and the substrate 40, the plurality of fin parts 52 can increase the heat dissipation area of the heat sink 50, thereby improving the heat dissipation efficiency, avoiding the heat from accumulating on the lamp points 41 or the substrate 40, preventing the rear shell 30 from melting due to the overheating of the lamp points 41 or the overhigh temperature of the substrate 40, and being beneficial to improving the service life of the cosmetic mirror 100.

Specifically, the plurality of substrates 40 and the plurality of heat dissipation members 50 are uniformly distributed along the main light guide portion 211; the heat dissipation members 50 correspond to the substrates 40 one to one; the length direction of the substrate 40 coincides with the radial direction of the distribution circumference along the arc direction of the distribution circumference, and the side of the substrate 40 where the lamp points 41 are disposed is opposite to the side of the other substrate 40 where the lamp points 41 are not disposed, so that the light generated by each lamp point 41 is transmitted in the main light guide portion 211 along the same direction.

Referring to fig. 2 and 3, in one embodiment, the length direction of the main sheet portion 51 is parallel to the mirror surface of the main mirror body 60; the fin portion 52 extends parallel to the mirror surface of the main mirror 60; a plurality of fin portions 52 connecting the same main plate portion 51 are distributed in a direction parallel to the main mirror body 60. Since the length direction of the main sheet part 51 is parallel to the mirror surface, and the side surface of the sheet-shaped main sheet part 51 is perpendicular to the mirror surface of the main mirror body 60, the fin part 52 extends from the side surface of the main sheet part 51 in the direction parallel to the mirror surface, so that the extension length of the heat sink 50 in the thickness direction of the cosmetic mirror 100 can be effectively controlled, and the thickness of the cosmetic mirror 100 can be effectively controlled.

Specifically, a plurality of accommodating grooves 33 are formed on one side of the rear housing 30 facing the main mirror body 60, and the substrate 40 and the main sheet part 51 are accommodated in the same accommodating groove 33; the depth direction of the housing groove 33 is perpendicular to the mirror surface of the main mirror 60. By controlling the width of the accommodating groove 33 so that the width of the accommodating groove 33 is close to the sum of the thicknesses of the substrate 40 and the main sheet portion 51 of the heat sink 50, the substrate 40 can be brought into contact with the accommodating groove 33 after the substrate 40 and the main sheet portion 51 are accommodated in the accommodating groove 33. Specifically, the rear housing 30 is connected to a side facing the main mirror 60 with oppositely disposed concave blocks 34, the receiving groove 33 is formed between the two opposite concave blocks 34, the section of the concave block 34 in the direction parallel to the mirror surface is concave, and both ends of the base plate 40 and both ends of the main plate portion 51 are respectively received in the concave blocks 34.

Referring to fig. 2 and 7, in one embodiment, the cosmetic mirror 100 further includes a conductive sheet 61, wherein the conductive sheet 61 abuts against the back surface of the main mirror body 60; the side of the conductive sheet 61 facing away from the main mirror body 60 directly or indirectly abuts against the heat sink 50 to transfer the heat of the heat sink 50 to the conductive sheet 61. By attaching the conductive sheet 61 to the back surface of the main mirror 60, after the conductive sheet 61 absorbs heat from the heat sink 50, the conductive sheet 61 uniformly transfers the heat to different portions of the main mirror 60, so that the temperature of the entire main mirror 60 can be raised relative to the surrounding environment, thereby preventing the condensation of moist warm air on the mirror surface of the main mirror 60 after contacting the main mirror 60 and preventing the mirror surface of the main mirror 60 from forming a fuzzy fog surface.

Specifically, the conductive sheet 61 directly or indirectly abuts against the edge of the main sheet portion 51 and the edge of the fin portion 52, respectively; the conductive sheet 61 also directly or indirectly abuts the edge of the substrate 40. The heat on the substrate 40 can be directly transferred to the conductive sheet 61, and since the main sheet portion 51 and the fin portion 52 of the same heat sink 50 are respectively in contact with the conductive sheet 61, the heat sink 50 and the conductive sheet 61 have a larger contact area, and the heat sink 50 can more efficiently transfer the heat to the conductive sheet 61 after absorbing the heat from the substrate 40.

Specifically, the abutting portion between the heat sink 50 and the conductive sheet 61 is provided with a heat conductive material, wherein the heat conductive material is a paste fluid or an elastic solid. Because the heat sink 50 and the heat conduction piece 61 are installed in different orders, generally, after the heat sink 50 is installed on the rear housing 30, the main mirror body 60 attached with the heat conduction piece 61 is connected to the rear housing 30, and the heat conduction material is arranged between the heat sink 50 and the heat conduction piece 61, so that the heat conduction device can adapt to the fit clearance between the heat sink 50 and the heat conduction piece 61, and ensure that the heat conduction between the heat sink 50 and the heat conduction piece 61 is realized, or the heat transfer area between the heat sink 50 and the heat conduction piece 61 is increased. Specifically, the heat conductive material may be heat conductive silicone grease or heat conductive silicone gel.

Referring to fig. 1, in one embodiment, the cosmetic mirror 100 further includes a concave mirror body 62, and a magnetic force is applied between the concave mirror body 62 and the main body of the cosmetic mirror 100, so that the concave mirror body 62 is detachably attached to the outer side of the main mirror body 60. When the local of the face needs to be enlarged to observe, the concave mirror body 62 is close to the main mirror body 60, and under the action of magnetic force between the main mirror body 60 and the conducting sheet 61, the concave mirror body 62 can be adsorbed on the mirror surface of the main mirror body 60, and the mirror surface of the concave mirror body 62 is arc-shaped and convex, so that the enlargement effect can be realized, and a user can conveniently and clearly observe the local condition.

Alternatively, a magnet may be disposed on the back of the concave mirror body 62, and then the conductive sheet 61 is made of a magnetic material or a material containing iron, cobalt, or nickel, so that a magnetic force is generated between the concave mirror body 62 and the conductive sheet 61; the conductive sheet 61 may be made of a magnetic material, and then a material containing iron, cobalt, or nickel may be provided on the back surface of the concave mirror body 62.

Specifically, the rear housing 30 is connected with a plurality of protective posts 36, and the plurality of protective posts 36 are distributed between the rear housing 30 and the back of the main mirror body 60. When the primary mirror 60 deforms under external pressure, the protective post 36 can provide support for the primary mirror 60 to prevent the primary mirror 60 from being broken due to further deformation; specifically, a gap is left between the protection column 36 and the back surface of the main mirror body 60, and the gap may be 0.05-0.4 mm. In the present embodiment, a plurality of protective posts 36 are circumferentially distributed between the rear housing 30 and the rear face of the main mirror body 60.

Referring to fig. 2 and 6, in one embodiment, the vanity mirror 100 further includes a handle 37 connected to the rear housing 30. The rear case 30 is connected to the handle 37, so that the cosmetic mirror 100 can be easily held, and the convenience of the cosmetic mirror 100 in use can be improved. Specifically, the handle 37 is cylindrical; the handle 37 accommodates an energy storage member 38, and the energy storage member 38 is used for supplying power to the lamp point 41. Since the handle 37 is columnar and the energy storage member 38 is accommodated in the handle 37, the weight of the handle 37 can be increased, and the cosmetic mirror 100 is in an upright state by contacting the lower end surface of the handle 37 with the tabletop. Optionally, the cosmetic mirror 100 may further include a control circuit to control the current through the light point 41 to vary the brightness. In the present embodiment, the handle 37 has a cylindrical shape. Further, in order to facilitate the adjustment of the angle of the rear housing 30 or the main mirror 60 relative to the handle 37, a universal ball connection can be used between the rear housing 30 and the handle 37.

In this embodiment, after the light source generates light, the light enters the light-introducing portion 212 from the light-entering end 213, and the light is guided to the main light-guiding portion 211 by the light-introducing portion 212, so that the light is uniformly transmitted and reflected in the annular main light-guiding portion 211, and the light is projected to the face of the user from different angles, thereby obtaining a uniform illumination effect. Because the main frame part 221 covers the non-lighting side of the light guide plate 21, and the flange part 222 shields the edge of the light guide plate 21, light can be prevented from leaking out of the non-lighting side or edge of the light guide plate 21, loss of light in the light guide assembly 20 during the conduction process is reduced, light conduction efficiency is ensured, and insufficient illumination brightness of the cosmetic mirror 100 is avoided or the power specification of the light point 41 needs to be improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A light guide assembly, comprising:

the light guide plate comprises a ring-shaped main light guide part and a lead-in part connected with the main light guide part; the lead-in part is provided with a light inlet end, and the light inlet end is arranged opposite to the light source; and

the frame body comprises a main frame part and a flange part connected with the main frame part; the main frame part is used for covering one side surface of the light guide plate; the flange part is arranged along the edge of the light guide plate; the extension length of the flange part is greater than or equal to the thickness of the light guide plate in the direction perpendicular to the light guide plate.

2. A light guide assembly according to claim 1, wherein the light guide plate has a plurality of lead-in portions uniformly arranged along the main light guide portion; the lead-in part is connected with the inner ring side of the main light guide part.

3. The light guide assembly of claim 1, wherein the edge shape of the main frame portion approximates or conforms to the edge shape of the light guide plate; the flange portion is connected to an edge of the main frame portion.

4. A light guide assembly according to claim 1, wherein a reflective layer is provided between the main frame portion and the light guide plate to reflect light directed towards the main frame portion back into the light guide plate.

5. The light guide assembly of claim 1, further comprising a light diffuser plate covering a side of the light guide plate facing away from the frame.

6. A cosmetic mirror, comprising: the light guide assembly of any one of claims 1 to 5, a rear housing connected to the light guide assembly, a substrate mounted to the rear housing, a heat sink for dissipating heat from the substrate, and a main mirror connected to the rear housing; one side of the substrate is connected with a lamp point which is used as a light source and is arranged opposite to the light inlet end of the lead-in part; the heat dissipation piece is abutted against the other side of the substrate.

7. The cosmetic mirror according to claim 6, wherein a plurality of the base plates are mounted at different portions of the rear case; each substrate corresponds to at least one heat dissipation piece; the heat dissipation member includes a main piece portion abutted against the other side of the substrate and a plurality of fin portions connected to the main piece portion so as to face away from one side of the substrate.

8. The cosmetic mirror according to claim 7, wherein a longitudinal direction of the main plate portion is arranged in parallel with a mirror surface of the main mirror body; the fin part extends in parallel with the mirror surface of the main mirror body; the fin portions connecting the same main lens portion are distributed along the direction parallel to the main lens body.

9. The cosmetic mirror according to claim 6, further comprising a conductive sheet abutting a back surface of the main mirror body; one side of the conduction piece, which is back to the main mirror body, is directly or indirectly abutted against the heat dissipation piece so as to transfer the heat of the heat dissipation piece to the conduction piece.

10. The cosmetic mirror according to any one of claims 6 to 9, further comprising a concave mirror body, wherein a magnetic force acts between the concave mirror body and the main body of the cosmetic mirror to detachably attach the concave mirror body to the outside of the main mirror body.

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