GB2570072A

GB2570072A - Light guiding device and cosmetic mirror having same

Info

Publication number: GB2570072A
Application number: GB1906085.4A
Authority: GB
Inventors: Wang Nianou; Yang Wuxi; Zou Xinliang; Liu Xianglin
Original assignee: Shenzhen Accompany Technology Co Ltd
Current assignee: Shenzhen Accompany Technology Co Ltd
Priority date: 2017-06-29
Filing date: 2017-11-22
Publication date: 2019-07-10
Anticipated expiration: 2037-11-22
Also published as: AU2017421048B2; KR20200030028A; CN107092052A; GB2570072B; AU2017421048A1; JP6862070B2; GB201906085D0; JP2020503659A; WO2019000814A1; KR102285336B1; CN107092052B

Abstract

Provided is a light guiding device (10), comprising a first light incident end surface (100) for receiving a first light, a second light incident end surface (102) for receiving a second light, a light exit surface (104) and a light reflecting surface (106) disposed opposite to the light exit surface (104). The light reflecting surface (106) is configured to perform a reflecting operation on the first light and the second light, and the first light and the second light after the reflecting operation are emitted from the light emitting surface (104). Also provided is a cosmetic mirror with a light guiding device (10). The light guiding device (10) and the cosmetic mirror having the light guiding device (10) are respectively provided with illuminants at both ends of a light guiding body (110), so that the light generated by the illuminant is transmitted from opposite ends of the light guiding body (110) to achieve the purpose of improving the uniformity of the emitted light.

Description

LIGHT GUIDING DEVICE AND COSMETIC MIRROR HAVING SAME

TECHNICAL FIELD

[0001] The present disclosure relates to a light guiding device and a cosmetic mirror having the light guiding device.

BACKGROUND

[0002] Cosmetic mirrors are used in every household. In the case of making up with a mirror, since the angle of the mirror needs to be different, a situation in which the view cannot be clearly seen due to insufficient local light is caused, and the angle of the light is generally fixed. Therefore, when viewing at different angles is required, there may be a phenomenon of non-uniform light, which causes inconvenience to the user.

SUMMARY

[0003] Accordingly, it is necessary to provide a light guiding device that can reduce the non-uniformity of light emission and a cosmetic mirror having the light guiding device.

[0004] A light guiding device includes a first light emitting member, a second light emitting member, and a light guiding body. The light guiding body includes a first light incident end face used to receive a first light, a second light incident end face used to receive a second light, a light exit surface, and a light reflecting surface opposite to the light exit surface. The light reflecting surface is used to reflect the first light and the second light, and the reflected first light and the second light are emitted from the light exit surface.

[0005] Additionally, in the light guiding device, a plurality of scattering dots are provided on the light reflecting surface.

[0006] Additionally, in the light guiding device, the plurality of scattering dots have a shape of one or more of a circular shape and a wedge shape.

[0007] Additionally, in the light guiding device, a density of the plurality of light scattering dots is inversely related to a distance to the light emitting members.

[0008] Additionally, in the light guiding device, the first light emitting member is provided at the first light incident end face, and the second light emitting member is provided at the second light incident end face. The first light emitting member includes one or both of a warm light emitting element or a cold light emitting element having a monochromatic temperature, and the second light emitting member includes one or both of the warm light emitting element or the cold light emitting element having the monochromatic temperature. Alternatively, the first light emitting member includes one or more light emitting elements of warm light having a bicolor temperature, and the second light emitting member includes one or more light emitting elements of warm light having the bicolor temperature.

[0009] Additionally, the light guiding device further includes a first control circuit used to control the first light emitting member to emit the first light. The first control circuit includes a low-pass filter circuit used to filter a pulse signal to output a linear control signal, and a driving chip used to adjust a brightness of the first light emitting member in accordance with the linear control signal.

[0010] Additionally, the light guiding device further includes a second control circuit used to control the second light emitting member to emit the second light. The second control circuit includes a low-pass filter circuit used to filter a pulse signal to output a linear control signal, and a driving chip used to adjust a brightness of the second light emitting member in accordance with the linear control signal.

[0011] Additionally, in the light guiding device, the driving chip includes a voltage output pin and a feedback pin, the voltage output pin is connected to an anode of a light emitting diode, a cathode of the light emitting diode is grounded via a first resistor, the feedback pin is connected to the cathode of the light emitting diode via a second resistor, and the feedback pin receives the pulse signal via a third resistor and a fourth resistor in series, and a node of the third resistor and the fourth resistor is grounded via a capacitor.

[0012] Additionally, in the light guiding device, the light guiding body includes the light reflecting surface, the light exit surface opposite to the light reflecting surface, an inner side surface, and an outer side surface opposite to the inner side surface. The light reflecting surface, the light exit surface, the inner side surface, and the outer side surface define a wedge-shaped cross section.

[0013] Additionally, the light guiding device further includes a reflector device provided adjacent to the light reflecting surface of the light guiding device.

[0014] Additionally, in the light guiding device, the light exit surface of the light guiding device is convex or concave.

[0015] A cosmetic mirror includes a mirror and a light guiding device provided along a circumference of the mirror. The light guiding device includes a first light emitting member, a second light emitting member, and a light guiding body. The light guiding body includes a first light incident end face used to receive a first light, a second light incident end face used to receive a second light, a light exit surface, and a light reflecting surface opposite to the light exit surface. The light reflecting surface is used to reflect the first light and the second light, and the reflected first light and the second light are emitted from the light exit surface.

[0016] Additionally, the cosmetic mirror further includes a soft light device. The soft light device includes a first receiving portion and a second receiving portion. The first receiving portion is used to receive the mirror, and a light exit portion of the guiding device is received in the second receiving portion.

[0017] Additionally, the cosmetic mirror further includes a support member and a heat dissipation device. The support member includes an upwardly raised abutment portion, an outer surface of the abutment portion adjacent to the first light incident end face is provided with the first emitting member facing the first light incident end face, and an outer surface of the abutment portion adjacent to the second light incident end face is provided with the second emitting member facing the second light incident end face. The heat dissipation device is located between the light emitting member and the corresponding light incident end face.

[0018] Additionally, in the cosmetic mirror, the support member is an aluminum substrate, and the heat dissipation device is made of a material with a low thermal resistance.

[0019] According to the aforementioned light guiding device and the cosmetic mirror having the light guide device, the light emitting members are provided at both ends of the light guiding body, such that lights generated by each light emitting member are transmitted toward each other from different ends of the light guiding body, so as to improve an uniformity of emitted light.

[0020] In addition, it is advantageous to further improve the uniformity of the emitted light by providing a light reflecting device at the light reflecting surface adjacent to the light guiding body and providing the soft light device at the light exit surface.

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. 1 is a schematic view of a light guiding device according to an embodiment of the present disclosure.

[0022] FIG. 2 is a perspective view showing a connection relationship between a light emitting member and a light guiding body in FIG. 1.

[0023] FIG. 3 illustrates a perspective view of the light guiding device in FIG. 1 and an enlarged view of an end thereof.

[0024] FIG. 4 illustrates a cross-sectional view of the light guiding device in FIG. 1 and an enlarged end surface thereof.

[0025] FIG. 5 is schematic view illustrating an IES curve of the light guiding device in FIG. 1.

[0026] FIG. 6 is a circuit diagram of a control circuit in a control circuit board of FIG. 1.

[0027] FIG. 7 is an exploded view of a cosmetic mirror according to an embodiment of the present disclosure.

[0028] FIG. 8 is a partial enlarged view of an assembled cosmetic mirror in FIG. 7.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The objects, features and advantages of the present disclosure will be clearly and completely described in the following with reference to the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present disclosure and the features of the embodiments may be combined with each other.

[0030] Many specific details are set forth in the following description to facilitate a full understanding of the present disclosure, the described embodiments are merely some rather than all of the embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of the protection of the present disclosure.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present disclosure. The terms used in the specification of the present disclosure are intended only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0032] Referring to FIG. 1, a light guiding device 10 according to an embodiment of the present disclosure includes a light guiding body 110, a first light emitting member 130 located at a first end of the light guiding body 110, and a second light emitting member 140 located at a second end of the light guiding body 110, and the first end of the light guiding body 110 is arranged opposite to the second end. The first light emitting member 130 is used to emit one or more first lights, the second light emitting member 140 is used to emit one or more second lights, and lights generated by the first light emitting member 130 and the second light emitting member 140 can be transmitted within the light guiding body 110.

[0033] In the illustrated embodiment, the light guiding body 110 may include a first light incident end face 100 located at the first end, a second light incident end face 102 located at the second end, a light exit surface 104, and a light reflecting surface 106 opposite to the light exit surface 104.

[0034] The light reflecting surface 106 is used to reflect the first light and/or the second light. In the illustrated embodiment, a portion of the first light and/or the second light can be emitted from the light exit surface 104 by a reflection operation of the light reflecting surface 106. Another portion of the first light and/or the second light can transmit along a propagation path in which the light guiding body 110 is located. In the illustrated embodiment, a switch of the propagation path in which the light guiding body 110 is located may be a straight line or a non-straight line. For example, the first light may be transmitted from a first direction to a second direction along a propagation path in which the light guiding body 110 is located, and the second light may be transmitted from the second direction to the first direction along the propagation path in which the light guiding body 110 is located.

[0035] In the illustrated embodiment, the first light incident end face 100 and the second light incident end face 102 may be arranged opposite to each other, such that the first light generated by the first light emitting member 130 located at the first end 100 of the light guiding body 110 and the second light generated by the second light emitting member 140 located at the second end 102 of the light guiding body 110 may be mixed and superimposed on the propagation path in which the light guiding body 110 is located, such that the first light and the second light may be emitted within the light guiding body 110 and the light exit surface 104, so as to form a light source with an uniform light emission.

[0036] It can be understood that, the first light emitting member 130 may include one or both of a warm light emitting element or a cold light emitting element having a monochromatic temperature, and the second light emitting member 140 may include one or both of the warm light emitting element or cold light emitting element having the monochromatic temperature.

[0037] When both the first light emitting member 130 and the second light emitting member 140 include the warm light emitting element having the monochromatic temperature, a light source of double warm light can be formed via the light guiding device 10. When both the first light emitting member 130 and the second light emitting member 140 include the cold light emitting element having the monochromatic temperature, a light source of double cold light can be formed via the light guiding device 10. In other embodiments, both the first light emitting member 130 and the second light emitting member 140 may include two warm light emitting elements. The numbers of the light emitting elements included in the first light emitting member 130 and the second light emitting member 140 may be increased or decreased according to actual requirements, so as to meet the requirements of light sources under different conditions and scenarios.

[0038] In other embodiments, the first light emitting member 130 may include one or more light emitting elements of warm light having the bicolor temperature, and the second light emitting member 140 may include one or more light emitting elements of warm light having the bicolor temperature. They are collocated or cooperated to form light sources in different conditions and scenes.

[0039] Referring to FIG. 2, both the first light emitting member 130 and the second light emitting member 140 may include a light bead and a reflecting cup. As an example, the first light emitting member 130 may include a light bead 131 and a reflection cup 133. The light bead 131 is used to emit one or more first light, the reflecting cup 133 is substantially inverted conical shaped, and the inverted conical reflecting cup has an opening and a bottom. The light bead 131 is located at the bottom of the reflecting cup 133, and the reflecting cup 133 is used to reflect the one or more first light generated by the light bead 131, such that the first lights generated by the light bead 131 are entered into the light guiding body 110 through the opening and the first incident end face 100 as much as possible, so as to increase an utilization of the light source. One or more of the first light generated by the beads 131 may generate a full reflection within the reflecting cup 133, such that all of the first lights generated by the light bead 131 may be incident to the light guiding body 110.

[0040] In other embodiments, a first lens (not shown) may also be provided between the first light emitting member 130 and the first incident end face 100, and a second lens (not shown) may also be provided between the second light emitting member 140 and the second incident end face 102. The first lens and the second lens may be used to diffuse an incident light to expand an angle of the incident light, and thereby making the distribution of the light entering the light guiding body 110 more uniform. The first light generated by the first light emitting member 130 may be diffused by the first lens to generate a light having a larger incidence angle, and likewise, the second light generated by the second light emitting member 140 may be diffused by the second lens to generate a light having a larger incidence angle.

[0041] The first light emitting member 130 and the second light emitting member 140 are encapsulated in LED (Light Emitting Diode) packages (with single-color temperature/bicolor temperature chip), such that light flux per unit area output by the light emitting chip is relatively high, a drive current density thereof is relative large, and both effects of high color rendering and high brightness can be achieved. Of course, the color rendering and the brightness of the first light emitting member 130 and the second light emitting member 140 may also be adjusted by a control circuit board 40 (shown in FIG. 7).

[0042] Referring again to FIG. 1, a plurality of scattering dots 108 are also provided on the light reflecting surface 106. The shape of the scattering dots 108 may have a shape of one or more of a circular shape and a wedge shape. It can be understood that the circular scattering dot has isotropic scattering, and the wedge-shaped scattering dot may appropriately compensate for the dispersion. Accordingly, different numbers of circular scattering dots or wedge-shaped scattering dots may be provided on the light reflecting surface 106, depending on implementation requirements. In other embodiments, the shape of the scattering dots 108 is not limited to the circular shape and the wedge-shaped shape, but may be set to other shapes, such as an ellipse or the like according to actual requirements.

[0043] In the illustrated embodiment, since two symmetrical light sources (including the first light-emitting member 130 and the second light emitting member 140) are used, attenuation curves of the two light sources should satisfy the characteristic of symmetrical attenuation, such that a uniform output light can be obtained via a superimposition effect of the two light sources.

[0044] It is understood that, the attenuation curve of a single light source is as follow: [0045] c is the density of the scattering dots. A uniform density may be used, taking into account factors such as process and processing.

[0046] The maximum density of the scattering dots is as follow: [0047] , wherein PC is a material transmission light loss related to the material, and xmax is a length of a light guide plate.

[0048] In principle, the smaller the size of the scattering dot, the better. However, taking into account process difficulty, it is generally about 0.01 to 0.007 mm. In one of the embodiments, the density of distribution of the scattering dots 108 on the light reflecting surface 106 may vary with a distance from the light source. The density of the distribution of the scattering dots 108 on the light reflecting surface 106 may be inversely related to the distance from the light source. For example, the density of the distribution of the scattering dots 108 may be small due to the light flux adjacent to the light emitting member is relatively large, and since the light flux away from the light emitting member is relatively small, the density of the distribution of the scattering dots 108 may be appropriately increased, such that the light output from the light guiding device 10 may be relatively uniform, and an influence caused by the distance from the light emitting member may be reduced.

[0049] Referring to FIG. 3, the light guiding body 110 further includes an inner side surface 112 and an outer side surface 114. The inner surface 112, the outer surface 114, the light reflecting surface 106, and the light exit surface 104 of the light guiding body 110 cooperatively define the propagation path. The light guiding body 110 is substantially annular, and the light emitted from the first light emitting member 130 and the second light emitting member 140 can be transmitted in the annular propagation path. In an alternative embodiment, the inner side surface 112 and the outer side surface 114 may also be coated with a reflective material, such that the first and/or second light may be emitted relatively well on the propagation path, so as to reduce the first and/or second light emitted from the inner side surface 112 and the outer side surface 114, thus the first and/or second light may be emitted from the light exit end 104 as much as possible. In an alternative embodiment, the light reflecting surface 106 of the light guiding body 110 may also be provided with a light reflecting device 70 (shown in FIG. 7) nearby, which may increase an intensity of reflection of the first and second lights, thereby reducing light loss and improving an utilization rate of light.

[0050] In the illustrated embodiment, a cross section of the light guiding body 110 is substantially wedge-shaped. A length of an edge of the cross section on which the inner side surface 112 is projected is greater than a length of an edge of the cross section on which the outer side surface 114 is projected, such that the light can be spread outward and avoided from being dazzling.

[0051] In the illustrated embodiment, the light bead 131 may be located adjacent to the light reflecting surface 106 of the light guiding device 10. In other embodiments, the light bead 131 may be located adjacent to a central axis of the cross section of the light guiding body 110 or the narrower edge of the wedge-shaped cross section. For example, if the length of the edge of the cross section on which the inner side surface 112 is projected is greater than the length of the edge of the cross section on which the outer side surface 114 is projected, since a transmission path of the propagation path at the inner side surface of the light guiding body 110 is different from a transmission path of the propagation path at the outer side surface (eg. a distance of propagation path on the outer side surface is greater than a distance of the propagation path on the inner side surface), the light bead 131 is disposed adjacent to the narrower edge of the wedge-shaped cross section, so that the light flux on a side where the propagation path is longer is greater than the light flux on another side where the propagation path is shorter, so as to obtain uniform output light.

[0052] Referring to FIG. 4, it illustrates a cross section of the light guiding body 110 according to an embodiment. The cross section of the light guiding body 110 is substantially wedge-shaped. The length of an edge of the cross section on which the inner side surface 112 is projected is less than the length of an edge of the cross section on which the outer side surface 114 is projected, such that the light guiding path of the outer side surface 114 is longer, and therefore the outer side surface 114 needs to be thicker and more lights can be emitted therefrom, and the light guiding path of the inner side surface 112 is shorter, and the inner side surface 112 needs to be thinner, so that the light emitted from the light exit surface 104 is more uniform.

[0053] In addition, the light exit surface 104 on the light guiding body 110 may be convex or concave. The emitted light may be spatially distributed according to a specific light distribution curve, such as a batwing shaped IES curve (as shown in FIG. 5), such that the light is more uniformly distributed to the user's face within a range of 10 to 50 cm from the mirror (a general range for making up), and it is beneficial for reducing glare value.

[0054] Referring to FIGS. 6, 7 and 8, a cosmetic mirror according to an embodiment of the present disclosure includes a mirror 30, a soft light device 20 for receiving the mirror 30 and the light guiding device 10, a control circuit board 40 for controlling color temperature and brightness of the light guiding device 10, a support device 60 for supporting the control circuit board 40, a heat dissipation device 50 for dissipating heat from the control circuit board 40, and a light reflecting device 70.

[0055] The soft light device 20 includes a first receiving space 202 for receiving the mirror 30 and a second receiving space 204 for receiving the light guiding device 10.

In the illustrated embodiment, the mirror 30 can be fastened to the first receiving space 202 by the soft light device 20 via a fastening portion, such that the mirror 30 is fixed in the first receiving space 202.

[0056] In the illustrated embodiment, the soft light device 20 includes a soft light portion (not shown). The soft light device is provided along a circumference of the first receiving space 202, and forms a second receiving space 204. When the light guiding device 10 is received in the second receiving space 204, light emitted from the light exit surface 104 of the light guiding device 10 may pass through the soft light portion to perform a light-softening process on the light emitted from the light guiding device 10, such that the light emitted from the light guiding device 10 is uniform and gentle, and it is also advantageous to reduce the glare value. In the illustrated embodiment, the soft light device 20 may be acrylic with transparent atomization corrosion. In other embodiments, a toner which does not affect color rendering may be added between the soft light device 20 and the light guiding device 10, or a scattering paper may be added between the light guiding device 10 and the soft light device 20.

[0057] The light reflecting device 70 is provided adjacent to the light reflecting surface 106 of the light guiding body 110, so as to enhance the intensity of reflection of the first and second lights.

[0058] The light guide device 10 is substantially annular and has an opening 200 that forms the first incident end face 100 and the second incident end face 102.

[0059] The support member 60 is used to fix the control circuit board 40 and the light reflecting device 70 to the light guiding device 10 and the soft light device 20. In the illustrated embodiment, the number of the support members 60 may be two. The support member 60 includes an upwardly raised abutment portion 600, two first light emitting members 130 facing the first incident end face 100 are provided on an outer surface of the abutment portion 600 adjacent to the first incident end face 100, and two second light emitting members 140 facing the second incident end face 102 are provided on an outer surface of the abutment portion 600 adjacent to the second incident end face 102. In this way, lights emitted from the first light emitting member 130 and the second light emitting member 140 may be incident from the first incident end face 100 and the second light incident end face 102 to the light guiding body 110, respectively.

[0060] In the illustrated embodiment, the control circuit board 40 may include a control circuit used to adjust information such as brightness and color temperature of the first light emitting member 130 and the second light emitting member 140.

[0061] In the illustrated embodiment, the first light emitted by the first light emitting member 130 may be adjusted by a first control circuit, and the second light emitted by the second light emitting member 140 may be adjusted by a second control circuit. The first control circuit and the second control circuit may be the same, and the first control circuit is taken as an example for description in the present embodiment.

[0062] The first control circuit may include a driving chip Ul, a filter circuit, a peripheral circuit, and the first light emitting member 130. In the illustrated embodiment, the first light emitting member 130 includes two light emitting diodes, D2 and D3.

[0063] The driving chip U1 adjusts the brightness of the first light emitting member 130 by adjusting the voltage and/or current output to the first light emitting member 130.

[0064] The driving chip U1 may include a voltage input pin VIN, a voltage output pin SW, a detection pin OV, a ground pin GND, a feedback pin FB, and a control pin CTRL.

[0065] The voltage input pin VIN is coupled to a power supply of 5 V, which is grounded via a capacitor C1.

[0066] The control pin CTRL receives a switching signal through the resistor R1 to control the brightness of the first light emitting member in a first manner. The control pin CTRL is further grounded via a pull-down resistor R2. The driving chip Ul may adjust the brightness of the first light emitting member 130 via the switching signal received by the control pin CTRL. In the illustrated embodiment, the switching signal may be a signal of a high level or a low level, and when the switching signal is a signal of a high level, the driving chip U1 may increase the voltage or current of the power supply output pin S W to increase the brightness of the first light emitting member 130. When the switching signal is a signal of a low level, the driving chip U1 may reduce the voltage or current of the power supply output pin SW, thereby achieving the purpose of reducing the brightness of the second light emitting member 140.

[0067] The voltage output pin SW is coupled to the voltage input pin VIN via an inductor LI, and is also coupled to an anode of a diode Dl. A cathode of the diode D1 is grounded via the light emitting diodes D2 and D3 and the resistor R6 in series, and the cathode of the diode Dl is coupled to the detection pin OV and is grounded via the capacitor C2. The ground pin GND is grounded.

[0068] The feedback pin FB is grounded via a capacitor C3 and is also coupled to a node between the light emitting diode D3 and the resistor R6 via a resistor R5. The feedback pin FB also receives the control signal via a resistor R4 and a resistor R3 in series, the resistor R4 and a resistor R3 is also grounded at a node therebetween via a capacitor C4.

[0069] In the illustrated embodiment, the driving chip U1 may control the brightness of the first light emitting member by using a pulse signal as a second manner.

[0070] It can be understood that the control signal may be the pulse signal, and the resistor R4 and the capacitor C4 may constitute a low-pass filter circuit. The low-pass filter circuit is used to perform a low-pass filter operation on the control signal, such that a linear control signal is received by the feedback pin FB of the driving chip U1. When the linear control signal is received, the first light emitted from the first light emitting member 130 can be linearly controlled by the driving chip U1, such that the output thereof can be more stable, and stroboscopic flicker of the light can be lower on the premise of ensuring energy efficiency utilization.

[0071] In the illustrated embodiment, the support member 60 may be an aluminum substrate, and the support member 60 may also be used to dissipate heat generated by the light emitting member.

[0072] The heat dissipation device 50 includes two heat dissipation fins 503. The two heat dissipation fins 503 are provided on the side surfaces of the two support members 60, respectively. Specifically, the heat dissipation fin 503 may include a downwardly extended contact surface 505. The contact surface 505 of the heat dissipation fin 503 may be in contact with the side surface of the support member 60, and when the heat dissipation fin 503 is in contact with the support member 60, the heat dissipation fin 503 is provided adjacent to the light emitting member and is located below the corresponding light guiding device to dissipate heat generated by the light emitting member. The contact surface 505 of the heat dissipation fin 503 can be used to expand a heat dissipation area. In the illustrated embodiment, the heat dissipation device 50 further includes two thermally conductive silicones 505. Each of the thermally conductive silicones 505 is arranged between the corresponding heat dissipation fin 503 and the support member 60, so as to transmit heat of the light emitting member and dissipate heat. In other embodiments, the heat dissipation device 50 may include only the heat dissipation fin 503, such that the heat dissipation fin 503 can be in direct contact with the corresponding support member 60 to achieve heat dissipation. In the illustrated embodiment, the heat generated by the light emitting member is derived as quickly as possible by using the heat dissipation method in which the aluminum substrate and the heat dissipation fin are combined with the thermally conductive silicone, and the aforementioned structure meets both requirements of processing difficulty and heat dissipation area. The material of the heat dissipation fin is a material of low thermal resistance, which may be aluminum or copper.

[0073] According to the afore-described light guiding device and the cosmetic mirror having the light guide device, the light emitting members are provided at both ends of the light guiding body, such that lights generated by each light emitting member are transmitted toward each other from different ends of the light guiding body, so as to improve an uniformity of the emitted light.

[0074] In addition, it is advantageous to further improve the uniformity of the emitted light by providing a light reflecting device at the light reflecting surface adjacent to the light guiding body and providing the soft light device at the light exit surface.

[0075] It will be apparent to those skilled in the art that the present disclosure is not limited to the details of the forgoing exemplary embodiments, and that the present disclosure can be implemented in other specific forms without departing from the spirit or basic features of the present disclosure. Accordingly, embodiments should be considered as exemplary and non-limiting from any point of view, the scope of the disclosure is defined by the appended claims and not by the foregoing description, and therefore all changes falling within the meaning and scope of the equivalents of the claims are intended to be included in the present disclosure. Any reference numerals in the claims should not be regarded as limiting the claims in question. Also, it is apparent that the terms “include” or “comprise” does not exclude other units or steps, and singles do not exclude plural numbers. The plurality of units or systems described in the system claims may also be implemented by the same unit or system by software or hardware.

[0076] It should be noted that, the forgoing embodiments are intended to explain only the technical solutions of the present disclosure and not to limit thereto, although the present disclosure has been described in detail with reference to the exemplary embodiments, it will be understood by those skilled in the art that the technical solutions of the present disclosure may be modified or equivalently replaced without departing from the spirit and scope of the present technical solutions.

Claims

What is claimed is:

1. A light guiding device, comprising a first light emitting member, a second light emitting member, and a light guiding body, wherein the light guiding body comprises a first light incident end face configured to receive a first light, a second light incident end face configured to receive a second light, a light exit surface, and a light reflecting surface opposite to the light exit surface, the light reflecting surface is configured to reflect the first light and the second light, and the reflected first light and second light are emitted from the light exit surface.

2. The light guiding device according to claim 1, wherein a plurality of scattering dots are provided on the light reflecting surface.

3. The light guiding device according to claim 2, wherein the plurality of scattering dots have a shape of one or more of a circular shape and a wedge shape.

4. The light guiding device according to claim 2, wherein a density of the plurality of light scattering points is inversely related to a distance to the light emitting members.

5. The light guiding device according to claim 1, wherein the first light emitting member is provided at the first light incident end face, and the second light emitting member is provided at the second light incident end face, the first light emitting member comprises one or both of a warm light emitting element or a cold light emitting element having a monochromatic temperature, and the second light emitting member comprises one or both of the warm light emitting element or the cold light emitting element having the monochromatic temperature; or the first light emitting member comprises one or more light emitting element of warm light having a bicolor temperature, and the second light emitting member comprises one or more light emitting element of warm light having the bicolor temperature.

6. The light guiding device according to claim 1, further comprising a first control circuit configured to control the first light emitting member to emit the first light, wherein the first control circuit includes a low-pass filter circuit configured to filter a pulse signal to output a linear control signal, and a driving chip configured to adjust brightness of the first light emitting member in accordance with the linear control signal.

7. The light guiding device according to claim 1, further comprising a second control circuit configured to control the second light emitting member to emit the second light, wherein the second control circuit includes a low-pass filter circuit configured to filter a pulse signal to output a linear control signal, and a driving chip configured to adjust brightness of the second light emitting member in accordance with the linear control signal.

8. The light guiding device according to claim 6, wherein the driving chip comprises a voltage output pin and a feedback pin, the voltage output pin is coupled to an anode of a light emitting diode, a cathode of the light emitting diode is grounded via a first resistor, the feedback pin is coupled to the cathode of the light emitting diode via a second resistor, and the feedback pin receives the pulse signal via a third resistor and a fourth resistor in series, and a node of the third resistor and the fourth resistor is grounded via a capacitor.

9. The light guiding device according to any one of claims 1 to 8, wherein the light guiding body comprises the light reflecting surface, the light exit surface opposite to the light reflecting surface, an inner side surface, and an outer side surface opposite to the inner side surface, and the light reflecting surface, the light exit surface, the inner side surface, and the outer side surface define a wedge-shaped cross section.

10. The light guiding device according to any one of claims 1 to 8, further comprising a reflector device provided adjacent to the light reflecting surface of the light guiding device.

11. The light guiding device according to any one of claims 1 to 8, wherein the light exit surface of the light guiding device is convex or concave.

12. A cosmetic mirror, comprising a mirror and a light guiding device according to any one of the claims 1 to 11 provided along a circumference of the mirror.

13. The cosmetic mirror according to claim 12, further comprising a soft light device comprising a first receiving portion and a second receiving portion, wherein the first receiving portion is configured to receive the mirror, and a light exit portion of the light guiding device is received in the second receiving portion.

14. The cosmetic mirror according to claim 13, further comprising a support member and a heat dissipation device, wherein the support member comprises an upwardly raised abutment portion, an outer surface of the abutment portion adjacent to the first light incident end face is provided with the first emitting member facing the first light incident end face, an outer surface of the abutment portion adjacent to the second light incident end face is provided with the second emitting member facing the second light incident end face, and the heat dissipation device is located between the light emitting member and the corresponding light incident end face.

15. The cosmetic mirror according to claim 14, wherein the support member is an aluminum substrate and the heat dissipation device is made of a material with a low thermal resistance.