Light guide, lamp assembly and electric equipment

Abstract

The utility model discloses a light guide, luminaire subassembly and electric equipment, the light guide includes light guide body, light guide body has light incident surface, a plurality of optical reflecting surface and f, the plurality of optical reflecting surface is distributed along the circumferential direction of light guide body in proper order, light is suitable for the light incident surface spread into the light guide body, f is the light incident surface, and f is the light incident surface. And after being sequentially reflected by the plurality of optical reflecting surfaces along the circumferential direction of the light guide body, the light is transmitted to the outside of the light guide body from the light emitting surface. According to the light guide, the size of the light guide is reduced, the occupied space of the light guide is reduced, and installation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a light guide, a lamp assembly and electrical equipment. Background Art

[0002] At present, the application rate of LED technology in car lights is very high, especially the requirements of OEMs for the static effect and lighting uniformity of the front position lamp structure of the car are getting higher and higher. The front position lamp of the car usually adopts a light guide structure, and the light guide structure is mostly a direct structure emitted by LED. The light guide structure includes a light guide and LED lamp beads. The LED lamp beads are arranged on the outside of the light incident surface of the light guide. After the LED lamp beads are lit, the light emitted enters the light guide and is reflected by the light guide and then emitted from the light guide.

[0003] In the related art, the light guide structure is relatively large in size and occupies a relatively large space for installation, which increases the difficulty of installing the light guide structure. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a light guide that reduces the volume of the light guide, reduces the space occupied by the light guide, and is easy to install.

[0005] Another object of the present invention is to provide a lamp assembly using the above light guide.

[0006] Another object of the present utility model is to provide an electrical device using the above-mentioned lamp assembly.

[0007] The light guide according to the first aspect of the utility model comprises: a light guide body, wherein the light guide body has a light incident surface, a plurality of optical reflective surfaces and a light emitting surface, wherein the plurality of optical reflective surfaces are arranged in sequence along the circumference of the light guide body, and the light is suitable for propagating into the light guide body through the light incident surface, and after being reflected by the plurality of optical reflective surfaces in sequence along the circumference of the light guide body, propagating from the light emitting surface to the outside of the light guide body.

[0008] According to the light guide of the utility model, under the action of multiple optical reflective surfaces, after the light is diffused and sorted multiple times, the entire light emitting surface emits light evenly, and the brightness of the light is relatively uniform. In addition, by arranging the light incident surface, multiple optical reflective surfaces and the light emitting surface in sequence along the circumference of the light guide body, the volume of the light guide body is reduced while ensuring that the light emitting surface is evenly lit, and the occupied area of ​​the light guide body is reduced, which is convenient for installation.

[0009] According to some embodiments of the utility model, the multiple optical reflective surfaces include a first optical reflective surface, a second optical reflective surface and a third optical reflective surface arranged in sequence along the circumference of the light guide body, the first optical reflective surface and the second optical reflective surface are opposite to each other along the first direction, the second optical reflective surface and the third optical reflective surface are opposite to each other along the second direction, and the first direction and the second direction are perpendicular.

[0010] According to some embodiments of the present invention, the light incident surface is opposite to the first optical reflective surface along the second direction, and the light emitting surface is opposite to the third optical reflective surface along the first direction.

[0011] According to some embodiments of the present invention, the third optical reflective surface is located on a side of the second optical reflective surface adjacent to the light incident surface.

[0012] According to some embodiments of the present invention, the second optical reflective surface and the third optical reflective surface are respectively formed on two surfaces of the light guide body that are connected to each other.

[0013] According to some embodiments of the utility model, the light guide body includes: a substrate, one end of the substrate along the first direction is formed with the first optical reflective surface, and the other end of the substrate along the first direction is formed with the second optical reflective surface and the third optical reflective surface; a collimating portion, one end of the collimating portion is connected to the one end of the substrate along the first direction, the other end of the collimating portion extends along the second direction toward a direction away from the substrate, and the other end of the collimating portion is formed with the light incident surface; an emitting portion, one end of the emitting portion is connected to the substrate, the other end of the emitting portion extends along the first direction toward a direction away from the substrate, and the other end of the emitting portion is formed with the light emitting surface.

[0014] According to some embodiments of the present invention, along the second direction, the emission portion is located between the first optical reflective surface and the collimating portion.

[0015] According to some embodiments of the present invention, the width of the emission portion in the second direction is smaller than the width of the collimating portion in the first direction.

[0016] According to some embodiments of the present invention, the light emitting surface is formed as a plane or a curved surface.

[0017] According to some embodiments of the present invention, optical patterns are respectively provided on the plurality of optical reflective surfaces and the light emitting surface.

[0018] According to the embodiment of the second aspect of the utility model, the lamp assembly includes: a mounting shell, the mounting shell has a mounting cavity; a light source, the light source is arranged in the mounting cavity; and a light guide, the light guide is the light guide according to the embodiment of the first aspect of the utility model, and at least a part of the light guide is arranged in the mounting cavity.

[0019] According to some embodiments of the utility model, a first mounting cavity and a second mounting cavity that are connected to each other are defined in the mounting shell, the base of the light guide is disposed in the first mounting cavity, the collimating portion of the light guide is disposed in the second mounting cavity, the light source is disposed in the second mounting cavity and is opposite to the light incident surface of the collimating portion, an opening is formed on the mounting shell, and the exit portion of the light guide passes through the opening and extends out of the mounting shell.

[0020] The electrical equipment according to the embodiment of the third aspect of the utility model comprises the lamp assembly according to the embodiment of the second aspect of the utility model.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic diagram of a lamp assembly according to an embodiment of the utility model;

[0024] Figure 2 is a side view of a lamp assembly according to an embodiment of the utility model;

[0025] Figure 3 This is a lighting effect diagram of the light emitting surface of the light guide according to the embodiment of the utility model.

[0026] Reference numerals:

[0027] 100. Light guide;

[0028] 1. Light guide body; 11. Collimation unit; 111. Light incident surface;

[0029] 12. substrate; 121. optical reflective surface; 1211. first optical reflective surface;

[0030] 1212, second optical reflective surface; 1213, third optical reflective surface;

[0031] 13. Emitting part; 131. Light emitting surface;

[0032] 200. Lighting components;

[0033] 201, mounting shell; 2011, mounting cavity; 2011a, first mounting cavity;

[0034] 2011b, second installation cavity; 2012, opening;

[0035] 202. Light source. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 3 The light guide 100 according to the first embodiment of the utility model is described, and the light guide 100 can be used in a lamp assembly 200. In the following description of the present application, the light guide 100 used in the lamp assembly 200 is taken as an example for detailed description.

[0037] like Figure 1 and Figure 2 As shown, the light guide 100 according to the first embodiment of the utility model includes a light guide body 1.

[0038] Specifically, the light guide body 1 has a light incident surface 111, a plurality of optical reflective surfaces 121 and a light emitting surface 131. The plurality of optical reflective surfaces 121 are sequentially arranged along the circumference of the light guide body 1. Light is suitable for propagating into the light guide body 1 through the light incident surface 111, and after being sequentially reflected by the plurality of optical reflective surfaces 121 along the circumference of the light guide body 1, propagating from the light emitting surface 131 to the outside of the light guide body 1. In the description of the present utility model, "plurality" means two or more.

[0039] For example, in Figure 1 and Figure 2 In the example, the light incident surface 111 and the light output surface 131 are located on the outer circumferential surface of the light guide body 1, and the multiple optical reflective surfaces 121 are located on the inner wall surface of the light guide body 1. The light incident surface 111, the multiple optical reflective surfaces 121 and the light output surface 131 are arranged in sequence along the circumferential direction of the light guide body 1, wherein the multiple optical reflective surfaces 121 are also arranged in sequence along the circumferential direction of the light guide body 1.

[0040] The propagation path of light (such as Figure 2 The direction indicated by the arrow A in the middle is roughly as follows: the light enters the light guide body 1 from the light incident surface 111, and the light propagates to one of the multiple optical reflective surfaces 121 in the light guide body 1. Then the light is fully reflected on the above-mentioned one optical reflective surface 121, and the reflected light propagates to other optical reflective surfaces 121. The light is reflected by multiple optical reflective surfaces 121 in sequence, propagates in the light guide body 1 along the circumference of the light guide body 1, and finally the light is emitted from the light emitting surface 131.

[0041] With such an arrangement, when light passes through the optical reflective surface 121, the light is diffused and organized under the action of the optical reflective surface 121, so that the light is dispersed to propagate along different angles (that is, dispersed into light with a large angle), and the light is organized so that the light can propagate to the next optical reflective surface 121, thereby effectively ensuring that the light can propagate along the set propagation path, thereby improving the uniformity of lighting on the light-emitting surface 131, that is, the effect of the light-emitting surface 131 being lit can be seen from multiple viewing angles, that is, the entire light-emitting surface 131 emits light uniformly, and the brightness of the light is relatively uniform. In addition, by arranging the light incident surface 111, multiple optical reflective surfaces 121, and the light-emitting surface 131 in sequence along the circumference of the light guide body 1, the arrangement is reasonable, and the light can propagate along the circumference of the light guide body 1, thereby ensuring that the light can be diffused and organized multiple times within the effective space, and while ensuring that the light-emitting surface 131 is evenly lit, the light guide body 1 is reduced in the direction of the light guide body 1. Figure 1 The dimensions in the front-to-back direction and the up-to-down direction shown reduce the volume of the light guide body 1 , reduce the occupied area of ​​the light guide body 1 , and are beneficial to the installation of the light guide body 1 , thereby facilitating the installation of the light guide 100 .

[0042] According to the light guide 100 of the present invention, after being diffused and arranged multiple times by the multiple optical reflective surfaces 121, the entire light emitting surface 131 emits light evenly, and the brightness of the light is relatively uniform. In addition, by arranging the light incident surface 111, the multiple optical reflective surfaces 121 and the light emitting surface 131 in sequence along the circumference of the light guide body 1, the volume of the light guide body 1 is reduced while ensuring that the light emitting surface 131 is evenly lit, and the occupied area of ​​the light guide body 1 is reduced, which is convenient for installation.

[0043] According to some embodiments of the present invention, referring to Figure 2 The plurality of optical reflective surfaces 121 include a first optical reflective surface 1211, a second optical reflective surface 1212 and a third optical reflective surface 1213 which are sequentially arranged along the circumference of the light guide body 1. The first optical reflective surface 1211 and the second optical reflective surface 1213 are arranged along the first direction (eg Figure 2 The second optical reflective surface 1212 and the third optical reflective surface 1213 are opposite to each other along the second direction (as shown in the front and rear direction). Figure 2 The first direction is relative to the up and down direction shown in the figure, and the first direction is perpendicular to the second direction.

[0044] For example, the first optical reflective surface 1211, the second optical reflective surface 1212 and the third optical reflective surface 1213 are arranged in the following cases: first, the second optical reflective surface 1212 is located behind the first reflective surface, and the third optical reflective surface 1213 is located below the second optical reflective surface 1212 (e.g. Figure 2Second, the second optical reflective surface 1212 is located behind the first reflective surface, and the third optical reflective surface 1213 is located above the second optical reflective surface 1212.

[0045] Thus, after the light enters the light guide body 1 from the light incident surface 111, it is reflected by the first optical reflective surface 1211, the second optical reflective surface 1212 and the third optical reflective surface 1213 in sequence and then irradiates the light emitting surface 131. The first optical reflective surface 1211 directs the incident light to the opposite direction from the light emitting surface 131 and disperses the light into light with a large angle. The second optical reflective surface 1212 receives the light reflected from the first optical reflective surface 1211 and further reflects the light to the third optical reflective surface 1213 to adjust the angle of the light and properly diverge it. The third optical reflective surface 1213 receives the light reflected by the second optical reflective surface 1212, and further reflects the light onto the light emitting surface 131, further adjusts the angle of the light and completely diffuses the light. After multiple reflections by the first optical reflective surface 1211, the second optical reflective surface 1212 and the third optical reflective surface 1213, it is easy to achieve uniformity of the overall light output from the light emitting surface 131, and the brightness of the light emitting surface 131 is also relatively uniform.

[0046] In addition, by using optical design to multiplex the optical path of the light guide 100, a light effect of double the optical path can be achieved in a limited space, wherein the three optical reflective surfaces 121 passing through the light guide play the role of diffusing the light, and can achieve a uniform lighting effect at multiple viewing angles, and also greatly reduce the volume of the light guide 100, thereby reducing the occupied area of ​​the light guide body 1, and reducing the difficulty of installing the light guide 100 and the mounting shell 201 of the lamp assembly 200. Moreover, the number of optical reflective surfaces 121 is set moderately, and the layout is reasonable. The arrangement of the first optical reflective surface 1211, the second optical reflective surface 1212 and the third optical reflective surface 1213 effectively defines the propagation path of the light, so that the light can be propagated to the three optical reflective surfaces 121 in sequence in the light guide body 1. For example, the angle between each optical reflective surface 121 and the plane where the front-back direction is located is 45°, so that it can be ensured that the reflected light can be propagated to the next optical reflective surface 121.

[0047] According to some embodiments of the present invention, referring to Figure 2 , the light incident surface 111 is opposite to the first optical reflective surface 1211 along the second direction (i.e., the up-down direction), and the light emitting surface 131 is opposite to the third optical reflective surface 1213 along the first direction (i.e., the front-back direction). Figure 2 In the example, the first optical reflective surface 1211 is located above the light incident surface 111, the light emitting surface 131 is located in front of the third optical reflective surface 1213, and the light incident surface 111, the light emitting surface 131 and the three optical reflective surfaces 121 are arranged along Figure 2Arranged in clockwise direction.

[0048] With such a configuration, after the light enters from the light incident surface 111, it is effectively ensured that the light can propagate to the first optical reflective surface 1211, diffuse and sort on the first optical reflective surface 1211, and the light reflected by the first optical reflective surface 1211 propagates backward to the second optical reflective surface 1212, thereby changing the propagation direction of the light, so that the size of the light guide body 1 in the up-down direction is reduced, and the size of the light guide 100 in the up-down direction is reduced as a whole. In addition, after the light is reflected by the third optical reflective surface 1213, the light is irradiated to the light emitting surface 131 roughly in the front-to-back direction, effectively ensuring that the light is emitted from the light emitting surface 131, effectively utilizing the space of the light guide body 1 in the up-down direction, and making the structure of the light guide 100 compact.

[0049] According to some embodiments of the present invention, referring to Figure 2 , the third optical reflective surface 1213 is located on a side of the second optical reflective surface 1212 adjacent to the light incident surface 111. Figure 2 In the example of , the third optical reflective surface 1213 is substantially located between the second optical reflective surface 1212 and the light incident surface 111. In this way, the distance between the third optical reflective surface 1213 and the light incident surface 111 is reduced, thereby reducing the size of the light guide body 11 in the vertical direction, and further reducing the volume of the light guide 100, thereby reducing the occupied space of the light guide 100.

[0050] Further, refer to Figure 2 , the second optical reflective surface 1212 and the third optical reflective surface 1213 are respectively formed on two surfaces connected to each other of the light guide body 1. As a result, the distance between the second optical reflective surface 1212 and the third optical reflective surface 1213 is reduced, and the propagation distance of the light between the second optical reflective surface 1212 and the third optical reflective surface 1213 is shortened, thereby further reducing the size of the light guide body 1 in the up-down direction, and further facilitating the arrangement of the light guide 100. In addition, by reducing the propagation distance of the light between the second optical reflective surface 1212 and the third optical reflective surface 1213, the energy loss of the light during the propagation process is reduced, thereby improving the optical effect of the light emitted from the light exit surface 131, and further improving the lighting effect of the light guide 100.

[0051] According to some embodiments of the present invention, referring to Figure 2 The light guide body 1 includes a base 12 , a collimating portion 11 and an emitting portion 13 .

[0052] Specifically, a first optical reflective surface 1211 is formed at one end of the base 12 along the first direction (ie, the front-to-back direction), and a second optical reflective surface 1212 and a third optical reflective surface 1213 are formed at the other end of the base 12 along the first direction.

[0053] For example, in Figure 2 In the example, a detailed description is given by taking the example that the first optical reflective surface 1211 is located above the light incident surface 111, the second optical reflective surface 1212 is located behind the first optical reflective surface 1211, the third optical reflective surface 1213 is located below the second optical reflective surface 1212, and the light emitting surface 131 is located in front of the third optical reflective surface 1213.

[0054] The first optical reflective surface 1211 is formed at the front end of the base 12, and the first optical reflective surface 1211 is arranged to be tilted backward in the direction from bottom to top. The second optical reflective surface 1212 and the third optical reflective surface 1213 are formed at the rear end of the base 12, and the second optical reflective surface 1212 is arranged to be tilted backward in the direction from top to bottom, and the third optical reflective surface 1213 is arranged to be tilted forward in the direction from top to bottom, and the lower side of the second optical reflective surface 1212 is connected to the upper side of the third optical reflective surface 1213. In this way, while ensuring that the light propagates in the circumferential direction of the light guide 100, the first optical reflective surface 1211, the second optical reflective surface 1212 and the third optical reflective surface 1213 are simply formed and easy to process, thereby improving the production efficiency of the base 12, thereby improving the production efficiency of the light guide 100. Moreover, by setting the second optical reflective surface 1212 and the third optical reflective surface 1213, the propagation direction of the light irradiated onto the second optical reflective surface 1212 is opposite to the propagation direction of the light reflected by the third optical reflective surface 1213, which effectively changes the propagation direction of the light, thereby reducing the volume of the light guide 100, ensuring the uniformity of light output, simplifying the propagation mode of the light, reducing the number of optical reflective surfaces 121, and improving the light guiding effect of the light guide 100.

[0055] Combination Figure 2 One end of the collimating portion 11 is connected to one end of the substrate 12 along the first direction, and the other end of the collimating portion 11 extends along the second direction (ie, the up and down direction) toward a direction away from the substrate 12 , and the other end of the collimating portion 11 is formed with a light incident surface 111 .

[0056] For example, in Figure 2 In the example, the upper end of the collimating portion 11 is fixedly connected to the lower side surface of the front end of the base 12, the lower end of the collimating portion 11 extends downward, and the light incident surface 111 is formed at the lower end of the collimating portion 11. The cross-sectional shape of the lower end of the collimating portion 11 is roughly an angular shape. However, it is not limited to this, so that the light incident from the light incident surface 111 can be along a direction perpendicular to the light source, for example Figure 1The light emitted by the light source 202 of the lamp assembly 200 can be refracted by the light incident surface 111 and then enter the light guide 100 along the up and down directions (i.e., the direction perpendicular to the light source 202) and be incident on the first optical reflective surface 1211. Thus, the light incident surface 111 can collect the light emitted by the light source 202, so that the light emitted by the light source 202 converges on the first optical reflective surface 1211, and then is reflected by the second optical reflective surface 1212 and the third optical reflective surface 1213, thereby further improving the uniformity of the lighting effect of the light guide 100. However, it is not limited to this. It should be noted that the structure of the light incident surface 111 can be a structure with other similar functions.

[0057] Combination Figure 2 One end of the emitting portion 13 is connected to the substrate 12 , and the other end of the emitting portion 13 extends along the first direction toward a direction away from the substrate 12 . The other end of the emitting portion 13 is formed with a light emitting surface 131 .

[0058] For example, in Figure 2 In the example, the rear end of the emitting portion 13 is fixedly connected to at least a portion of the front side surface of the front end of the base 12, the front end of the emitting portion 13 extends forward, and the light emitting surface 131 is formed on the front end surface of the emitting portion 13. In this way, there is a gap between the light emitting surface 131 and the first optical reflective surface 1211, so as to avoid the mutual influence between the light passing through the light emitting surface 131 and the light passing through the first optical reflective surface 1211, thereby further improving the lighting effect of the light guide 100 and improving the optical effect of the light guide 100. It should be noted that the light guide body 1 has the function of adjusting the path and distribution of light, and the light guide body 1 can be a polymethyl methacrylate (PMMA) piece, a polycarbonate (PC) piece or other transparent optical material piece.

[0059] According to some embodiments of the present invention, referring to Figure 2 , along the second direction (i.e., the up-down direction), the light emitting portion 13 is located between the first optical reflective surface 1211 and the collimating portion 11. In this way, the light emitting surface 131 is located between the light incident surface 111 and the first optical reflective surface 1211, and the light passes through between the first optical reflective surface 1211 and the collimating portion 11 after being reflected by the third optical reflective surface 1213, thereby facilitating the control of the space of the light guide 100 in the up-down direction, and further reducing the volume of the light guide 100.

[0060] According to some embodiments of the present invention, referring to Figure 2, the width of the emitting portion 13 in the second direction (i.e., the up-down direction) is smaller than the width of the collimating portion 11 in the first direction (i.e., the front-back direction). With such a configuration, the width of the collimating portion 11 in the front-back direction is relatively wide, which increases the cross-sectional area of ​​the light incident surface 111, thereby effectively ensuring that the light emitted by the light source 202 is incident on the first optical reflective surface after being refracted by the light incident surface 111, improving the collection of light by the collimating portion 11, and further improving the optical effect of the light guide 100. In addition, the width of the emitting portion 13 in the up-down direction is relatively narrow, which reduces the cross-sectional area of ​​the light emitting surface 131, and the light is easily incident on the entire surface of the light emitting surface 131 after being totally reflected by the third optical reflective surface 1213, thereby further improving the uniformity of lighting of the light guide 100 and improving the use effect of the light guide 100.

[0061] Optionally, the light emitting surface 131 is formed as a plane (eg Figure 2 In other words, the light emitting surface 131 can be cut according to the structural shape of the light guide 100 required for use. Therefore, when the light emitting surface 131 is formed as a plane, the structure of the light emitting surface 131 is simple and easy to shape, thereby improving the production efficiency of the optical surface. In addition, when the light emitting surface 131 is formed as a curved surface, the light can be emitted from the light emitting surface 131 and diffused at different angles, so that when the light emitting surface 131 is viewed from multiple different angles, it can be seen to be lit, thereby further improving the lighting uniformity.

[0062] According to some embodiments of the utility model, optical patterns are respectively provided on the multiple optical reflective surfaces 121 and the light-emitting surface 131. As a result, the optical pattern further diffuses the light passing through the optical reflective surface 121 and the light-emitting surface 131, improves the degree of light diffusion, and further improves the uniformity of light emitted from the light-emitting surface 11. When it is necessary to explain, the optical pattern can be a raised semi-cylinder or a raised hemisphere, or a curved concave structure. Among them, the light-emitting surface 131 is an optical surface that can be directly seen by the human eye, and the surface can be cut or arranged with various optical patterns in accordance with the shape. The optical pattern can also be formed by a mold. In the case where the optical pattern is not arranged on the light-emitting surface 131, the third optical reflective surface 1213 is an appearance luminous surface visible to the human eye. For example, the light guide 100 can also be a transparent atomized wall thick part, in which dispersed particles are formed for diffusing light. In this case, the multiple optical reflective surfaces 121 and the light-emitting surface 131 may not be provided with optical patterns. But it is not limited to this.

[0063] According to the lamp assembly 200 of the second embodiment of the utility model, refer to Figure 1 and Figure 2, including a mounting shell 201, a light guide 100 and a light source 202, the mounting shell 201 having a mounting cavity 2011, the light source 202 being disposed in the mounting cavity 2011, the light guide 100 being the light guide 100 according to the first aspect embodiment of the utility model, and at least a portion of the light guide 100 being disposed in the mounting cavity 2011.

[0064] Thus, by adopting the above-mentioned light guide 100, the lighting uniformity of the lamp assembly 200 is also improved, thereby improving the luminous effect of the lamp. In addition, the mounting shell 201 wraps the light guide 100 and the light source 202, avoiding damage to the light guide 100 and the light source 202, thereby extending the service life of the light guide 100 and the light source 202, and further extending the service life of the lamp assembly 200. Moreover, the mounting shell 201 plays the role of fixing the light source 202 and the light guide 100, and can form a lamp assembly 200, which also facilitates the assembly of the entire lamp assembly 200 with other components of the electrical equipment. For example, the mounting shell 201 can be a white plastic part or a black plastic part. When the mounting shell 201 is a black plastic part, it is necessary to spray white paint on the inner surface of the black plastic part to avoid partial absorption of light when the light passes through the optical reflective surface 121, thereby improving the optical effect of the lamp assembly 200.

[0065] According to some embodiments of the present invention, referring to Figure 2 A first mounting cavity 2011a and a second mounting cavity 2011b that are connected to each other are defined in the mounting shell 201. The base 12 of the light guide 100 is disposed in the first mounting cavity 2011a. The collimating portion 11 of the light guide 100 is disposed in the second mounting cavity 2011b. The light source 202 is disposed in the second mounting cavity 2011b and is opposite to the light incident surface 111 of the collimating portion 11. An opening 2012 is formed on the mounting shell 201. The emitting portion 13 of the light guide 100 passes through the opening 2012 and extends out of the mounting shell 201.

[0066] For example, in Figure 2 In the example, the light source 202 is located on the bottom wall of the second mounting cavity 2011b, the light source 202 is opposite to the light incident surface 111 in the vertical direction, and the light source 202 is located below the light incident surface 111. The opening 2012 forms the front side of the mounting shell 201.

[0067] Thus, the side wall of the second installation cavity 2011b can block the light emitted by the light source 202, avoiding the light spot of the light source 202 from being seen on the light-emitting surface 131, thereby improving the uniformity of lighting of the light-emitting surface 131. In addition, the light-emitting surface 131 extends out of the installation shell 201 in a suspended state, and the light spot of the light source 202 is not seen from all viewing angles, which has a good sense of design and space, and improves the aesthetics of the lamp assembly 200.

[0068] Optionally, the light source 202 is a plurality of LED lamps, and the plurality of LED lamps are arranged on the bottom wall of the second mounting cavity 2011b at intervals in the left-right direction. Thus, the plurality of LED lamps are arranged on the same plane, which effectively saves the number of printed circuit boards (PCBs). At the same time, because the conductor has good optical effects and uniformity, the distance between two adjacent LED lamps can be 10 mm to 20 mm, preferably 20 mm. For example, in an arrangement space of 120 mm in length along the left-right direction, an LED lamp can be installed every 12 mm in traditional technology, while in the present solution, an LED lamp can be installed every 20 mm, saving four LED lamps and effectively saving the production cost of the lamp assembly. But it is not limited to this. It should be noted that the light source 202 can also be arranged along Figure 1 The light band extending in the left and right directions in the figure, the light color of the light source 202 is not limited. Figure 3 It is a dynamic water-flowing car light fully lit effect (there are three LED lights in the lamp assembly), for example, Figure 3 The light emitting surface 131 shown is formed as a plane, for example, a rectangular plane. Figure 3 The light emitting surface 131 shown has a length of 60 mm and a width of 3 mm. The entire light emitting surface 131 emits light evenly, has uniform brightness, and has a good lighting effect.

[0069] The electrical equipment (not shown) according to the embodiment of the third aspect of the utility model comprises the lamp assembly 200 according to the embodiment of the second aspect of the utility model.

[0070] According to the electric device of the embodiment of the utility model, the use performance of the electric device is improved by adopting the above-mentioned lamp assembly 200. For example, the electric device can be a vehicle, an aircraft or a ship.

[0071] Other structures and operations of the lamp assembly 200 and the electrical equipment according to the embodiment of the utility model are known to those skilled in the art and will not be described in detail here.

[0072] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0074] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A light guide, characterized in that include: A light guide body, wherein the light guide body has a light incident surface, a plurality of optical reflective surfaces and a light emitting surface, wherein the plurality of optical reflective surfaces are sequentially arranged along the circumference of the light guide body, and light is suitable for propagating into the light guide body through the light incident surface, and after being reflected by the plurality of optical reflective surfaces sequentially along the circumference of the light guide body, propagating from the light emitting surface to the outside of the light guide body.

2. The light guide according to claim 1, characterized in that The multiple optical reflective surfaces include a first optical reflective surface, a second optical reflective surface and a third optical reflective surface arranged in sequence along the circumference of the light guide body, the first optical reflective surface and the second optical reflective surface are opposite to each other along a first direction, the second optical reflective surface and the third optical reflective surface are opposite to each other along a second direction, and the first direction and the second direction are perpendicular.

3. The light guide according to claim 2, characterized in that The light incident surface is opposite to the first optical reflective surface along the second direction, and the light emitting surface is opposite to the third optical reflective surface along the first direction.

4. The light guide according to claim 2, characterized in that The third optical reflective surface is located on a side of the second optical reflective surface adjacent to the light incident surface.

5. The light guide according to claim 2, characterized in that The second optical reflective surface and the third optical reflective surface are respectively formed on two surfaces of the light guide body connected to each other.

6. The light guide according to claim 2, characterized in that The light guide body comprises: A substrate, wherein the first optical reflective surface is formed at one end of the substrate along the first direction, and the second optical reflective surface and the third optical reflective surface are formed at the other end of the substrate along the first direction; a collimating portion, one end of which is connected to the one end of the substrate along the first direction, the other end of which extends along the second direction in a direction away from the substrate, and the other end of which is formed with the light incident surface; An emitting portion, one end of which is connected to the base, the other end of which extends along the first direction toward a direction away from the base, and the other end of which is formed with the light emitting surface.

7. The light guide according to claim 6, characterized in that Along the second direction, the emission portion is located between the first optical reflective surface and the collimating portion.

8. The light guide according to claim 6, characterized in that The width of the emission portion in the second direction is smaller than the width of the collimating portion in the first direction.

9. The light guide according to claim 1, characterized in that The light emitting surface is formed as a plane or a curved surface.

10. The light guide according to any one of claims 1 to 9, characterized in that Optical patterns are respectively arranged on the plurality of optical reflection surfaces and the light emitting surface.

11. A lamp assembly, characterized in that: include: A mounting shell having a mounting cavity; A light source, the light source being arranged in the mounting cavity; A light guide, wherein the light guide is the light guide according to any one of claims 1 to 10, and at least a portion of the light guide is arranged in the installation cavity.

12. The lamp assembly according to claim 11, characterized in that The mounting shell defines a first mounting cavity and a second mounting cavity that are connected to each other, the base of the light guide is disposed in the first mounting cavity, the collimating portion of the light guide is disposed in the second mounting cavity, and the light source is disposed in the second mounting cavity and is opposite to the light incident surface of the collimating portion. An opening is formed on the mounting shell, and the emitting portion of the light guide extends out of the mounting shell through the opening.

13. An electrical equipment, characterized in that: Comprising a lamp assembly according to claim 11 or 12.

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