Light guide element, vehicle lamp and vehicle

Abstract

The utility model relates to a light guide element, a vehicle lamp and a vehicle. The light guide element comprises a light guide element body, the light guide element body is provided with a light inlet end and a light outlet end which are opposite to each other, and a hollow structure is arranged in the middle of the light guide element body. The first refraction wall is close to and faces the light inlet end, the second refraction wall is close to and faces the light outlet end, and a preset included angle is formed between the first refraction wall and the second refraction wall. According to the light guide element, secondary deflection of the light is generated in the light guide element, the propagation direction of the light guided out of the light outlet end is adjusted, the irradiation area of the light is optimized, and the illumination requirement of a user is better met.

Description

Technical Field

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

[0002] Car reading lights are an important part of vehicle lighting. They can provide clear and uniform light to meet the needs of drivers and passengers for reading or other activities in the car, reduce eye fatigue when reading, and provide drivers and passengers with a more comfortable driving experience.

[0003] The light guide element is one of the important parts of the car reading light. It is usually made of optical grade acrylic material, with high refractive index, high light transmittance, heat resistance, cold resistance, impact resistance, environmental protection and non-toxicity. In actual application, the light source (such as LED light) is incident from one side of the light guide element, and is guided out from the other side through reflection and refraction of the light guide element.

[0004] However, the light guide element in the existing car reading lamp has a simple structure, and the propagation direction of the light does not change inside the light guide element, resulting in the light from the light guide element not being able to be deflected to the designated lighting area according to actual needs. Therefore, the user can only adjust the sitting posture to meet the lighting or reading needs, which reduces the user experience.

[0005] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0006] In order to solve or improve to a certain extent the technical problem in the prior art that light cannot be deflected inside a light guide element, the utility model provides a light guide element. The light guide element comprises: a light guide element body, the light guide element body having a light input end and a light output end opposite to each other, a hollow hollow structure is provided in the middle of the light guide element body, and the hollow structure has a first refractive wall close to and facing the light input end and a second refractive wall close to and facing the light output end, wherein the first refractive wall and the second refractive wall form a predetermined angle.

[0007] It can be understood by those skilled in the art that the light guide element of the utility model has a light guide element body. The light guide element body has a light input end and a light output end opposite to each other. A hollow hollow structure is provided in the middle of the light guide element body. The hollow structure has a first refractive wall and a second refractive wall. The first refractive wall is close to and faces the light input end, while the second refractive wall is close to and faces the light output end. The first refractive wall and the second refractive wall are inclined relative to each other. After the light generated by the light source is incident from the light input end of the light guide element body, it first propagates between the light input end and the first refractive wall, and then enters the hollow hollow structure. Since the material of the light guide element body and the air have different refractive indices, the light will generate a first refraction on the first refractive wall when entering the hollow structure. Then, the light propagates between the second refractive wall and the light output end and generates a second refraction on the second refractive wall. Finally, the light is led out from the light output end to the external space and generates a third refraction at the light output end. Since the first refractive wall and the second refractive wall are at a predetermined angle (i.e., they are arranged at an inclination relative to each other), the light-guiding element of the utility model can cause the light to undergo a secondary deflection inside the light-guiding element, thereby adjusting the propagation direction of the light emitted from the light-emitting end, thereby optimizing the illumination area of ​​the light and better meeting the lighting needs of the user.

[0008] In the preferred technical solution of the above-mentioned light guide element, the light guide element body has a front side and a rear side opposite to each other in its width direction, the first refractive wall is configured to extend obliquely upward from the rear side to the front side, and the second refractive wall is configured to extend obliquely downward from the rear side to the front side. Through the above-mentioned arrangement, the hollow structure has a trumpet-shaped opening facing the front side of the light guide element body to meet the design requirements of light deflection. In addition, when installing the light guide element, the trumpet-shaped opening can be used to quickly and accurately determine the installation direction, thereby improving the installation efficiency.

[0009] In the preferred technical solution of the above light guide element, the first refractive wall forms a first preset angle with a horizontal plane perpendicular to the height direction of the light guide element body, and the second refractive wall forms a second preset angle with the horizontal plane, wherein the first preset angle ranges from 10° to 20°, and the second preset angle ranges from 10° to 20°. Through the above arrangement, the first refractive wall and the second refractive wall have a suitable tilt angle to meet the design requirements of light deflection.

[0010] In the preferred technical solution of the above light guide element, a plurality of collimating oblique teeth spaced apart from each other along the length direction of the light guide element body are provided on the first refractive wall. The arrangement of the collimating oblique teeth can cause the light to be refracted and reflected when passing through the collimating oblique teeth, and adjusted into parallel light propagating roughly along the height direction of the light guide element body, thereby optimizing the propagation path of the light and ensuring the illumination intensity.

[0011] In the preferred technical solution of the above light guide element, a plurality of deflection oblique teeth spaced apart from each other along the length direction of the light guide element body are provided on the second refractive wall. The provision of the deflection oblique teeth can deflect the light when passing through the deflection oblique teeth, so as to further optimize the irradiation area of ​​the light.

[0012] In the preferred technical solution of the above light guide element, the inclination direction of each of the deflection oblique teeth forms a third predetermined angle with a horizontal plane perpendicular to the height direction of the light guide element body, wherein the third predetermined angle ranges from 45° to 70°. Through the above arrangement, the deflection oblique teeth have a moderate inclination angle to meet the design requirements of light deflection.

[0013] In the preferred technical solution of the above light guide element, the hollow structure extends along the length direction of the light guide element body and has the same width as the light guide element body. Through the above arrangement, the hollow structure penetrates front and back along the width direction of the light guide element body for easy processing.

[0014] In the preferred technical solution of the above-mentioned light-guiding element, a focusing groove extending toward the light-emitting end is provided on the light-entering end; and / or a third refractive wall extending along a horizontal plane perpendicular to the height direction of the light-guiding element body is provided on the light-emitting end, and a light-distributing pattern is provided on the third refractive wall; and / or the material of the light-guiding element body is diffuse PC plastic. The focusing groove can focus the light emitted by the light source, so that the light propagates in a set direction, improves the optical efficiency of the light-guiding element, and correspondingly improves the energy utilization rate of the light source. Providing a light-distributing pattern on the third refractive wall at the light-emitting end can make the light emitted from the light-emitting end more uniform. In addition, the use of diffuse PC plastic to process the light-guiding element body can also make the light-guiding element have the advantages of good refractive index, light transmittance and heat resistance.

[0015] In order to solve or improve to a certain extent the technical problem that the light guide element in the prior art cannot achieve light deflection, the utility model provides a vehicle lamp. The vehicle lamp comprises the light guide element according to any one of the above items.

[0016] In order to solve or improve to a certain extent the technical problem that the light guide element in the prior art cannot achieve light deflection, the utility model provides a vehicle. The vehicle includes the above-mentioned vehicle lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0018] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the light guide element of the utility model;

[0019] Figure 2 is a top view of an embodiment of the light guide element of the utility model;

[0020] Figure 3 It is a front view of an embodiment of the light guide element of the utility model;

[0021] Figure 4 The embodiment of the light guide element of the utility model is along Figure 3 The schematic cross-section diagram obtained by the AA section line shown;

[0022] Figure 5 It is a bottom view of an embodiment of the light guide element of the utility model;

[0023] Figure 6 is a schematic diagram of an embodiment of light propagation along a vertical surface extending in the width direction of the light guide element of the utility model;

[0024] Figure 7 It is a schematic diagram of an embodiment of light propagation along a vertical surface extending in the length direction of the light guide element of the utility model.

[0025] List of reference numerals:

[0026] 1. Light guide element; 11. Light guide element body; 11a. Light input end; 11b. Light output end; 111. Light focusing groove; 112. Hollow structure; 1121. First refractive wall; 11211. Alignment oblique teeth; 1122. Second refractive wall; 11221. Deflection oblique teeth; 113. Third refractive wall; 1131. Light averaging pattern; 114. Left side wall; 115. Right side wall; 12. First clamping claw; 13. Second clamping claw. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0028] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In order to solve or improve to a certain extent the technical problem that the light guide element in the prior art cannot realize light deflection, the utility model provides a light guide element 1. The light guide element 1 comprises: a light guide element body 11, the light guide element body 11 has a light input end 11a and a light output end 11b opposite to each other, a hollow hollow structure 112 is provided in the middle of the light guide element body 11, and the hollow structure 112 has a first refractive wall 1121 close to and facing the light input end 11a and a second refractive wall 1122 close to and facing the light output end 11b, wherein the first refractive wall 1121 and the second refractive wall 1122 form a predetermined angle.

[0031] In this document, unless otherwise expressly stated, the terms "upper", "lower", "left", "right", "front", and "rear" are based on Figure 1 In addition, the "length direction" of the light guide element body 11 is the left-right direction, the "width direction" of the light guide element body 11 is the front-back direction, and the "height direction" of the light guide element 11 is the up-down direction.

[0032] like Figure 1 As shown, in one or more embodiments, the light guide element 1 of the utility model includes a light guide element body 11. The material of the light guide element body 11 is diffused PC plastic (i.e., using polycarbonate as a base material and adding a suitable diffusing agent), so that it has good refractive index, light transmittance and heat resistance. Alternatively, the light guide element body 11 can also be made of PMMA (i.e., polymethyl methacrylate), glass or other suitable materials.

[0033] Continue to see Figure 1 The light guide element body 11 has a light input end 11a and a light output end 11b opposite to each other. Figure 1In the orientation shown, the light input end 11a is the upper end of the light guide element body 11, and the light output end 11b is the lower end of the light guide element body 11. In the assembled state, the light input end 11a faces the light source (not shown in the figure), and the light output end 11b is away from the light source. In other words, the light generated by the light source enters the light guide element body 11 from the light input end 11a and is output from the light output end 11b. The light source can be but is not limited to an LED lamp. In one or more embodiments, a focusing groove 111 extending toward the light output end 11b is provided on the light input end 11a. The setting of the focusing groove 111 can focus the light emitted by the light source so that the light propagates in a set direction, thereby improving the optical efficiency of the light guide element 1 and the energy utilization rate of the light source. In one or more embodiments, four focusing grooves 111 are arranged at intervals from each other along the length direction of the light guide element body 11, and each focusing groove 111 corresponds to a light source. Alternatively, the number of the light-focusing grooves 111 may also be set to other suitable numbers greater or less than four, such as three, five, etc.

[0034] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, a hollow hollow structure 112 is provided in the middle of the light guide element body 11. In one or more embodiments, the hollow structure 112 extends substantially along the length direction of the light guide element body 11 and has the same width as the light guide element body 11. In other words, the hollow structure 112 is provided through the width direction of the light guide element body 11. Through the above arrangement, the hollow structure 112 can have a simple structure and be easy to process.

[0035] Continue to see Figure 1 , Figure 3 , Figure 4 and Figure 6 The hollow structure 112 has a first refractive wall 1121 and a second refractive wall 1122 opposite to each other. The first refractive wall 1121 is close to and faces the light input end 11a of the light guide element body 11, while the second refractive wall 1122 is close to and faces the light output end 11b of the light guide element body 11. Figure 1In the orientation shown, the first refractive wall 1121 is located above the second refractive wall 1122. The first refractive wall 1121 and the second refractive wall 1122 are inclined relative to each other. In this way, when the light generated by the light source propagates inside the light guide element body 11, it will be refracted for the first time on the first refractive wall 1121 and refracted for the second time on the second refractive wall 1122. Due to the mutually inclined arrangement between the first refractive wall 1121 and the second refractive wall 1122, the propagation direction of the light inside the light guide element body 11 will change, so that the light finally derived from the light output end 11b will be deflected, thereby optimizing the irradiation area of ​​the light and better meeting the lighting needs of the user.

[0036] based on Figure 1 In the orientation shown, the light guide element body 11 has opposite front and rear sides. Figure 4 and Figure 6 In one or more embodiments, the first refractive wall 1121 is configured to extend obliquely upward from the rear side to the front side, and the second refractive wall 1122 is configured to extend obliquely downward from the rear side to the front side. Through the above-mentioned arrangement, the hollow structure 112 has a trumpet-shaped opening facing the front side of the light guide element body 11. In other words, on the rear side of the light guide element body 11, there is a minimum spacing between the first refractive wall 1121 and the second refractive wall 1122; on the front side of the light guide element body 11, there is a maximum spacing between the first refractive wall 1121 and the second refractive wall 1122. It should be pointed out that the specific values ​​of the minimum spacing and the maximum spacing can be selected according to actual needs. See further. Figure 6 After the light is refracted twice on the first refractive wall 1121 and the second refractive wall 1122, its propagation direction will be deflected obliquely downward toward the direction away from the trumpet-shaped opening of the hollow structure 112. In the assembled state, the trumpet-shaped opening of the hollow structure 112 faces the door side of the vehicle, and the light is deflected toward the interior of the vehicle along the Y direction of the vehicle. This can not only optimize the irradiation area of ​​the light, but also clearly and accurately determine the installation direction when installing the light guide element 1, thereby improving the installation efficiency.

[0037] In one or more embodiments, the first refractive wall 1121 forms a first preset angle with a horizontal plane perpendicular to the height direction of the light guide element body 11, and the second refractive wall 1122 forms a second preset angle with the horizontal plane. The first preset angle ranges from 10° to 20°, and the second preset angle ranges from 10° to 20°. For example, the first preset angle is 10°, and the second preset angle is also 10°. Through the above-mentioned setting, the first refractive wall 1121 and the second refractive wall 1122 have a suitable tilt angle to meet the design requirements of light deflection.

[0038] Continue to see Figure 1 , Figure 3and Figure 4 In one or more embodiments, a plurality of collimating oblique teeth 11211 spaced apart from each other along the length direction of the light guide element body 11 are provided on the first refractive wall 1121. The plurality of collimating oblique teeth 11211 cooperate with each other so that part of the light is refracted and emitted when passing through the collimating oblique teeth 11211, and is adjusted into parallel light propagating roughly along the height direction of the light guide element body 11, thereby optimizing the propagation path of the light and ensuring the illumination intensity. Specifically, each light focusing groove 111 corresponds to a group of collimating oblique teeth 11211, and each group of collimating oblique teeth 11211 is composed of a series of sawtooth grooves and the middle part is an elliptical arc surface. The angle between each sawtooth groove and the adjacent sawtooth groove is different, but the light can be concentrated to form a central focus (the light source is located at the central focus). In other words, each group of collimating oblique teeth 11211 constitutes an independent Fresnel lens. The number and shape of the sawtooth grooves can be adjusted according to actual needs, as long as they can meet the design requirements.

[0039] Continue to see Figure 1 , Figure 3 , Figure 4 and Figure 7 In one or more embodiments, a plurality of deflection oblique teeth 11221 spaced apart from each other along the length direction of the light guide element body 11 are provided on the second refractive wall 1122. The provision of the deflection oblique teeth 11221 can deflect the light when passing through the deflection oblique teeth 11221, so as to further optimize the irradiation area of ​​the light. Figure 7 Each deflection helical tooth 11221 has the same structure to simplify the structure and facilitate processing. Figure 7 In the orientation shown, the inclination direction of each deflection oblique tooth 11221 is toward the upper right. In one or more embodiments, the inclination direction of each deflection oblique tooth 11221 forms a third predetermined angle with a horizontal plane perpendicular to the height direction of the light guide element body 11, wherein the third predetermined angle ranges from 45° to 70°. Through the above-mentioned arrangement, the deflection oblique tooth 11221 has a moderate inclination angle to meet the design requirements of light deflection. It should be pointed out that the number, spacing, depth and other parameters of the deflection oblique teeth 11221 can be adjusted according to actual needs. See further Figure 7 After passing through the deflection oblique teeth 11221, the propagation direction of the light is deflected obliquely downward toward the right side of the light guide element body 11. In the assembled state, the length direction of the light guide element body 11 extends along the X direction of the vehicle, so that after passing through the deflection oblique teeth 11221, the propagation direction of the light will be deflected along the X direction of the vehicle, so as to better optimize the irradiation area of ​​the light.

[0040] like Figure 1 and Figure 5As shown, in one or more embodiments, a third refractive wall 113 extending along a horizontal plane perpendicular to the height direction of the light guide element body 11 is provided on the light emitting end 11b of the light guide element body 11, and a light averaging pattern 1131 is provided on the third refractive wall 113. The provision of the light averaging pattern 1131 can make the light emitted from the light emitting end 11b more uniform and have a soft light mixing effect, thereby preventing the occurrence of stray light effects. It should be noted that the specific shape and size of the light averaging pattern 1131 can be adjusted according to actual needs.

[0041] like Figure 1 , Figure 3 and Figure 7 As shown, in one or more embodiments, the light guide element body 11 further includes a left side wall 114 and a right side wall 115 located on the left and right sides thereof, respectively. In one or more embodiments, a mirror-polished structure is adopted on each of the left side wall 114 and the right side wall 115, so that total reflection can be generated when light is irradiated thereon, thereby reducing the loss of light during transmission and ensuring the energy utilization rate of the light source.

[0042] like Figure 1 , Figure 3 and Figure 7 As shown, in one or more embodiments, a first claw 12 and a second claw 13 are respectively provided on the left and right sides of the light guide element body 11. The first claw 12 is arranged above the left side wall 114, and the second claw 13 is arranged above the right side wall 115. The provision of the first claw 12 and the second claw 13 can make the light guide element 1 conveniently and firmly fixed on a suitable installation area. Alternatively, other suitable installation mechanisms, such as screw holes, etc., can also be provided on the light guide element body 11 to fix it.

[0043] The utility model also provides a vehicle lamp (not shown in the figure). The vehicle lamp comprises the light guide element 1 described in any of the above embodiments. In addition, the vehicle lamp also includes but is not limited to components such as a light source, a lampshade, a circuit board, a switch, a fixing part and a mounting bracket. The vehicle lamp can be a vehicle-mounted atmosphere lamp, a vehicle-mounted reading lamp or other suitable vehicle lamps.

[0044] The utility model also provides a vehicle (not shown in the figure). The vehicle includes the headlight described in any of the above embodiments. In one or more embodiments, the headlight is installed on the roof or head console of the vehicle to provide reading or lighting functions for the driver. The vehicle can be, but is not limited to, an electric vehicle, a fuel vehicle, or a hybrid vehicle.

[0045] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A light guide element, characterized in that: The light guide element comprises: A light guide element body, wherein the light guide element body has a light input end and a light output end opposite to each other, a hollow hollow structure is provided in the middle of the light guide element body, and the hollow structure has a first refractive wall close to and facing the light input end and a second refractive wall close to and facing the light output end, Wherein, the first refractive wall and the second refractive wall form a predetermined angle.

2. The light guide element according to claim 1, characterized in that The light guide element body has a front side and a rear side opposite to each other in its width direction, the first refractive wall is configured to extend obliquely upward from the rear side to the front side, and the second refractive wall is configured to extend obliquely downward from the rear side to the front side.

3. The light guide element according to claim 2, characterized in that: The first refractive wall forms a first preset angle with a horizontal plane perpendicular to the height direction of the light guide element body, and the second refractive wall forms a second preset angle with the horizontal plane, wherein the first preset angle ranges from 10° to 20°, and the second preset angle ranges from 10° to 20°.

4. The light guide element according to claim 1, characterized in that A plurality of collimating oblique teeth spaced apart from each other along the length direction of the light guide element body are provided on the first refractive wall.

5. The light guide element according to claim 1, characterized in that: A plurality of deflection oblique teeth spaced apart from each other along the length direction of the light guide element body are provided on the second refractive wall.

6. The light guide element according to claim 5, characterized in that The inclination direction of each of the deflected oblique teeth forms a third predetermined angle with a horizontal plane perpendicular to the height direction of the light guide element body, wherein the third predetermined angle ranges from 45° to 70°.

7. The light guide element according to any one of claims 1 to 6, characterized in that: The hollow structure extends along the length direction of the light guide element body and has the same width as the light guide element body.

8. The light guide element according to any one of claims 1 to 6, characterized in that: A light-focusing groove extending toward the light-emitting end is provided on the light-incoming end; and / or A third refraction wall extending along a horizontal plane perpendicular to the height direction of the light guide element body is provided on the light output end, and a light averaging pattern is provided on the third refraction wall; and / or The material of the light guide element body is diffused PC plastic.

9. A vehicle lamp, characterized in that: The vehicle lamp comprises the light guide element according to any one of claims 1-8.

10. A vehicle, characterized in that: The vehicle comprises the vehicle lamp according to claim 9.

Images