Position lamp, vehicle body and vehicle
By designing the LED light source in automotive lamps under the thick-walled light guide and using Fresnel lens and reflective surface to process the light, the problem of reducing uniformity and granularity caused by the power increase of LED light source in the prior art is solved, achieving high efficiency Light distribution and uniform lighting effects.
Patent Information
- Application Number
- CN202421321338.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-06-11
AI Technical Summary
When existing automotive lamps increase the power of LED light sources to meet the requirements of light distribution regulations, it is easy to cause the uniformity of the lamps to decrease, resulting in a grainy or dazzling effect of the light source.
A position lamp is designed. The LED light source is located under the thick-walled light guide. After the light is polymerized by a Fresnel lens and reflected by the reflective surface, it emits the lampshade through the divergent surface, avoiding the lattice feeling of looking directly at the LED light source from the outside of the lampshade.
It achieves a uniform light effect that can meet the requirements of light distribution regulations without producing a grainy feeling, improving the uniformity and visual comfort of the lamp.
Smart Images
Figure CN222513955U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, in particular to a position lamp, a vehicle body and a vehicle. Background Art
[0002] Contemporary automotive lighting technology is rapidly evolving. With the widespread adoption of LEDs in automotive lighting, thick-walled light guides are gaining widespread adoption in automotive lighting to accommodate increasingly flexible and diverse styling requirements. They offer a wide range of styling options, as well as unique, signature design concepts that reflect the manufacturer's signature language. While thick-walled light guides inherently improve the uniformity of the luminaire's light-emitting surface, they also suffer from the disadvantage of lower light distribution efficiency. To meet regulatory requirements for various functions, this often requires increasing the number of LEDs or their power. However, this increase in LED power, along with the accompanying increase in lumen output, can negatively impact the lighting's uniformity, resulting in a grainy, even glaring, effect. Utility Model Content
[0003] In view of this, the present invention provides a position lamp, a vehicle body and a vehicle, so as to achieve the purpose of uniform light without generating a grainy feeling and meet the requirements of lighting distribution regulations.
[0004] The position lamp provided by the utility model includes:
[0005] Bracket;
[0006] A lampshade is connected to the bracket to enclose a receiving cavity;
[0007] A light guide assembly is disposed in the accommodating cavity and connected to the bracket, and includes:
[0008] An LED circuit board, on which an LED light source is mounted;
[0009] A Fresnel lens is disposed above the LED light source and converges the light emitted by the LED light source into incident light that propagates vertically upward;
[0010] A thick-walled light guide is arranged above the Fresnel lens. The thick-walled light guide is provided with a reflective surface and a divergent surface. The reflective surface is arranged directly above the Fresnel lens, extends toward the divergent surface and is arranged at an angle. The incident light propagating vertically upward enters the thick-walled light guide and reaches the reflective surface. The reflective surface reflects the incident light and forms reflected light propagating toward the divergent surface. The divergent surface is arranged toward the lampshade.
[0011] Optionally, a first optical pattern is provided on the reflective surface, and the first optical pattern is configured as a matrix inclined surface.
[0012] Optionally, a second optical pattern is provided on the diverging surface, and the second optical pattern is arranged as a uniformly distributed square array.
[0013] Optionally, a dermatoglyphics treatment layer is provided on the diverging surface.
[0014] Optionally, the thick-walled light guide and the Fresnel lens are integrally formed.
[0015] Optionally, a plurality of first mounting members are fixed on the LED circuit board and the thick-walled light guide respectively;
[0016] A plurality of second mounting members are fixed on the bracket;
[0017] A plurality of fasteners sequentially penetrate the corresponding first mounting member and the second mounting member to achieve the connection between the light guide assembly and the bracket.
[0018] Optionally, a positioning pin is fixed on the LED circuit board;
[0019] The bracket is provided with a positioning hole that matches the position of the positioning pin.
[0020] Optionally, the lampshade is adhesively connected to the bracket.
[0021] The utility model also provides a vehicle body, on which a headlight body is mounted, and further comprising the position light described in any one of the above items, wherein a bracket of the position light is connected to the headlight body.
[0022] The utility model also provides a vehicle, comprising the vehicle body described above.
[0023] Compared with the prior art, the above technical solution provided by the present invention has at least the following beneficial effects:
[0024] With the position lamp, vehicle body and vehicle of the present invention, the LED light source is located below the thick-walled light guide. The emitted light is converged and collimated by the Fresnel lens and reflected by the reflective surface to change the propagation direction, then propagates to the divergent surface and then emits the lampshade, directly avoiding the dot matrix defect of viewing the LED light source directly from the outside of the lampshade. In this way, the number of LED light source particles or power can be increased to meet the lighting distribution regulations. At the same time, the purpose of uniform light is achieved by utilizing the thick-walled light guide and its relative position relationship with the LED light source, without generating a grainy feeling. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a schematic diagram of a position light according to an embodiment of the present utility model;
[0026] Figure 2 for Figure 1 A schematic diagram of a light guide assembly of the position light shown;
[0027] Figure 3 for Figure 2 Schematic diagram of the reflective surface of the thick-walled light guide of the position light shown;
[0028] Figure 4 for Figure 3 a side view of the reflecting surface shown;
[0029] Figure 5 for Figure 2 Schematic diagram of the diverging surface of the thick-walled light guide of the position lamp shown;
[0030] Figure 6 for Figure 5 Side view of the diverging surface shown.
[0031] Reference numerals:
[0032] 1: bracket; 2: lampshade; 3: light guide assembly; 31: LED circuit board; 32: Fresnel lens; 33: thick-walled light guide; 331: reflective surface; 332: divergent surface; 4: accommodating cavity; 5: first mounting member. DETAILED DESCRIPTION
[0033] The embodiments of the present invention will be further described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.
[0034] Figure 1 This is a schematic diagram of a position light according to an embodiment of the present utility model; Figure 2 for Figure 1 Schematic diagram of the light guide assembly of the position light shown in FIG. Figure 1 and Figure 2As shown, the position light includes a bracket 1, a lampshade 2, and a light guide assembly 3. The lampshade 2 is connected to the bracket 1, and the two enclose a receiving cavity 4. The light guide assembly 3 is disposed within the receiving cavity 4 and is connected to the bracket 1. The light guide assembly 3 includes an LED circuit board 31, a Fresnel lens 32, and a thick-walled light guide 33. An LED light source is mounted on the LED circuit board 31. The Fresnel lens 32 is disposed above the LED light source and focuses the light emitted by the LED light source into incident light that propagates vertically upward. The thick-walled light guide 33 is disposed above the Fresnel lens 32 and has a reflective surface 331 and a diverging surface 332. The reflective surface 331 is disposed directly above the Fresnel lens 32, extending and tilted toward the diverging surface 332. The incident light propagating vertically upward enters the thick-walled light guide 33 and reaches the reflective surface 331. The reflective surface 331 reflects the incident light, forming reflected light that propagates toward the diverging surface 332. The diverging surface 332 is disposed toward the lampshade 2.
[0035] During use, the bracket 1 is installed in the lamp body of the vehicle body. When lighting is needed, the light emitted by the LED light source passes through the Fresnel lens 32 above, and is aggregated and collimated by the Fresnel lens 32 into incident light that propagates vertically upward, and propagates into the thick-walled light guide 33 located above, and further propagates to the reflecting surface 331 of the thick-walled light guide 33 located directly above the Fresnel lens 32. The reflecting surface 331 is tilted toward the diverging surface 332. After the vertically upward incident light is reflected by the reflecting surface 331, the formed reflected light propagates toward the diverging surface 332. The diverging surface 332 is set toward the lampshade 2. The reflected light is then emitted horizontally through the diverging surface 332 and finally emitted from the lampshade 2, thereby playing a lighting role.
[0036] With the position lamp of the present invention, the LED light source is located below the thick-walled light guide 33. The emitted light is converged and collimated by the Fresnel lens 32 and reflected by the reflective surface 331 to change the propagation direction, then propagates to the divergent surface 332 and then emits the lampshade 2, directly avoiding the dot matrix defect of viewing the LED light source directly from the outside of the lampshade 2. In this way, the number of LED light source particles or power can be increased to meet the lighting distribution regulations. At the same time, the purpose of uniform light is achieved by using the thick-walled light guide 33 and its relative position relationship with the LED light source, without generating a grainy feeling.
[0037] like Figure 1 and Figure 2As shown, in this embodiment, multiple LED light sources are mounted on the upper surface of an LED circuit board 31. A Fresnel lens 32 is positioned above the center of the upper surface of the LED circuit board 31. A thick-walled light guide 33 is positioned above the Fresnel lens 32. The thick-walled light guide 33 extends horizontally as a whole, and a diverging surface 332 is positioned at its left end face. A reflective surface 331 is positioned directly above the corresponding Fresnel lens 32. The reflective surface 331 is inclined leftward relative to the vertical plane toward the diverging surface 332 at an angle of approximately 45°. The bracket 1 and lampshade 2 are both irregularly shaped, enclosing a receiving cavity 4 that entirely encloses the light guide assembly 3. This positions the LED light source near the bottom of the receiving cavity 4, and the diverging surface 332 is positioned near the lampshade 2. In this embodiment, the diverging surface 332 and the lampshade 2 have the same inclination direction, both tilting to the right relative to the vertical plane. The light emitted by the LED light source is converged into light propagating vertically upward after passing through the Fresnel lens 32 , propagates to the reflective surface 331 directly above, is reflected by the reflective surface 331 into light propagating horizontally to the left, propagates to the diverging surface 332 , and is further emitted through the lampshade 2 .
[0038] The Fresnel lens 32 is a mature existing technology, and its specific structure and working principle are not described here. According to the different styling requirements of the position lamp, the specific shape and size of the thick-walled light guide 33, the specific shape and size of the lampshade 2 and the bracket 1, and the number of LED light sources can be adjusted.
[0039] Figure 3 for Figure 2 Schematic diagram of the reflective surface of the thick-walled light guide of the position light shown; Figure 4 for Figure 3 The side view of the reflecting surface is shown in FIG. Figure 3 and Figure 4 As shown, optionally, a first optical pattern is provided on the reflective surface 331, and the first optical pattern is configured as a matrix of inclined surfaces. This configuration can reflect all light that is converged by the Fresnel lens 32 and propagates vertically upward to the reflective surface 331, changing its transmission path and directing the light toward the diverging surface 332, thereby achieving a total reflection effect and improving light distribution efficiency.
[0040] like Figure 3 、 Figure 4 As shown, the reflective surface 331 is covered with matrix-type inclined surfaces, and all matrix-type inclined surfaces are arranged at the same angle toward the diverging surface 332 .
[0041] Figure 5 for Figure 2 Schematic diagram of the diverging surface of the thick-walled light guide of the position lamp shown; Figure 6 for Figure 5 The side view of the diverging surface is shown in FIG. Figure 5 and Figure 6As shown, optionally, a second optical pattern is provided on the diverging surface 332, and the second optical pattern is arranged in a uniformly distributed grid array. With this arrangement, the light propagating onto the diverging surface 332 becomes softer after passing through the second optical pattern, and then is emitted through the lampshade 2, thereby improving the uniformity of the position light's light output.
[0042] like Figure 5 As shown, in this embodiment, the front visual effect of the second optical pattern is composed of an array of evenly distributed small squares of 1mm*1mm, such as Figure 6 As shown, the second optical pattern is arranged in a step-like manner on the side. The grid size of the second optical pattern can be adjusted according to actual application.
[0043] Optionally, a graining treatment layer is provided on the diverging surface 332. By appropriately adding graining treatment, the light propagating onto the diverging surface 332 can be made softer after passing through the graining treatment layer, thereby further improving the uniformity of the position lamp's light emission after being emitted through the lampshade 2.
[0044] Dermatoglyphic processing is a mature existing technology, and its specific operation process will not be described in detail here.
[0045] Optionally, the thick-walled light guide 33 and the Fresnel lens 32 are integrally formed. The use of an integral forming process saves manufacturing steps and effectively reduces product costs while ensuring quality.
[0046] Optionally, multiple first mounting members 5 are fixed to the LED circuit board 31 and the thick-walled light guide 33, respectively; multiple second mounting members are fixed to the bracket 1; and multiple fasteners sequentially penetrate the corresponding first mounting members 5 and second mounting members to achieve the connection between the light guide assembly 3 and the bracket 1. The use of a fastener-mounted connection method simplifies the connection process between the light guide assembly 3 and the bracket 1, which helps improve assembly efficiency.
[0047] like Figure 2 As shown, in this embodiment, two first mounting members 5 are fixed at intervals to the lower surface of the LED circuit board 31 and the upper surface of the thick-walled light guide 33. The first mounting members 5 are outwardly extending plates, each of which has a mounting hole extending therethrough. Correspondingly, a plurality of second mounting members are fixed to corresponding positions on the bracket 1, and each second mounting member also has a mounting hole extending therethrough. Screws can be used as fasteners, which sequentially penetrate the mounting holes of the first and second mounting members at corresponding positions to achieve the connection between the first and second mounting members, that is, to achieve the connection between the light guide assembly 3 and the bracket 1. The specific structural form, number of the first and second mounting members, and the specific location of the first and second mounting members on the LED circuit board 31, thick-walled light guide 33, and bracket 1 can be adjusted according to the design requirements. Fasteners other than screws can also be used.
[0048] Optionally, a locating pin is fixed to the LED circuit board 31, and a locating hole is formed in the bracket 1 to match the position of the locating pin. With this arrangement, when connecting the light guide assembly 3 to the bracket 1, the locating pin is first inserted into the locating hole to preliminarily determine the relative position of the light guide assembly 3 and the bracket 1. Fasteners are then used to connect the corresponding first mounting member 5 and second mounting member, facilitating rapid positioning and installation of the light guide assembly 3 and the bracket 1.
[0049] According to actual application conditions, the number of positioning pins and positioning holes, as well as their positions on the LED circuit board 31 and the bracket 1 can be adjusted.
[0050] Optionally, the lampshade 2 is glued to the bracket 1. The glue connection is easy to operate and can achieve a quick connection between the two.
[0051] The present invention further provides a vehicle body, on which a lamp body is mounted, and the vehicle body also includes the position lamp described in any of the above embodiments, wherein a bracket 1 of the position lamp is connected to the lamp body.
[0052] With the vehicle body of the present invention, the LED light source of the position light is located below the thick-walled light guide 33. The emitted light is converged and collimated by the Fresnel lens 32 and reflected by the reflective surface 331 to change the propagation direction, then propagates to the divergent surface 332 and then emits the lampshade 2, directly avoiding the dot matrix defect of viewing the LED light source directly from the outside of the lampshade 2. In this way, the number of LED light source particles or power can be increased to meet the lighting distribution regulations. At the same time, the purpose of uniform light is achieved by using the thick-walled light guide 33 and its relative position relationship with the LED light source, without producing a grainy feeling.
[0053] The utility model also provides a vehicle, comprising the vehicle body described above.
[0054] In a vehicle using the present invention, the LED light source of the position light is located below the thick-walled light guide 33. The emitted light is converged and collimated by the Fresnel lens 32 and reflected by the reflective surface 331 to change the propagation direction, then propagates to the divergent surface 332 and then emits the lampshade 2, directly avoiding the dot matrix defect of viewing the LED light source directly from the outside of the lampshade 2. In this way, the number of LED light source particles or the power can be increased to meet the lighting distribution regulations. At the same time, the purpose of uniform light is achieved by using the thick-walled light guide 33 and its relative position relationship with the LED light source, without generating a grainy feeling.
[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the various embodiments of the present invention.
Claims
1. A position light, characterized in that: include: Bracket; A lampshade, the lampshade is connected to the bracket, and the two enclose a receiving cavity; A light guide assembly, the light guide assembly is arranged in the accommodating cavity and connected to the bracket, and the light guide assembly includes: An LED circuit board, on which an LED light source is mounted; A Fresnel lens, which is disposed above the LED light source and aggregates the light emitted by the LED light source into incident light that propagates vertically upward; A thick-walled light guide is arranged above the Fresnel lens. The thick-walled light guide is provided with a reflective surface and a divergent surface. The reflective surface is arranged directly above the Fresnel lens, extends toward the divergent surface and is arranged obliquely. The incident light propagating vertically upward enters the thick-walled light guide and reaches the reflective surface. The reflective surface reflects the incident light and forms reflected light propagating toward the divergent surface. The divergent surface is arranged toward the lampshade.
2. The position light according to claim 1, characterized in that: The reflective surface is provided with a first optical pattern, and the first optical pattern is arranged as a matrix inclined surface.
3. The position light according to claim 1 or 2, characterized in that: A second optical pattern is arranged on the divergent surface, and the second optical pattern is arranged in a square grid evenly distributed array.
4. The position light according to claim 3, characterized in that: The diverging surface is provided with a dermatoglyphic treatment layer.
5. The position light according to claim 1 or 2, characterized in that: The thick-walled light guide is integrally formed with the Fresnel lens.
6. The position light according to claim 5, characterized in that: A plurality of first mounting members are respectively fixed on the LED circuit board and the thick-walled light guide; A plurality of second mounting members are fixed on the bracket; A plurality of fasteners sequentially penetrate the corresponding first mounting member and the second mounting member to achieve the connection between the light guide assembly and the bracket.
7. The position light according to claim 6, characterized in that: A positioning pin is fixed on the LED circuit board; The bracket is provided with a positioning hole which matches the position of the positioning pin.
8. The position light according to claim 1 or 2, characterized in that: The lampshade is connected to the bracket by adhesive bonding.
9. A vehicle body, on which a lamp body is mounted, characterized in that: It also includes the position light according to any one of claims 1 to 8, wherein the bracket of the position light is connected to the lamp body of the vehicle lamp.
10. A vehicle, characterized in that: Comprising the vehicle body as claimed in claim 9.