Car lamp
By placing the low-beam assembly and the projection assembly on the upper and lower side of the substrate in the headlights, the integration of lighting and projection functions is achieved by using the imaging lens group, which solves the problem of large space occupation of the car lights in the prior art, and improves aesthetics and heat dissipation.
Patent Information
- Application Number
- CN202422786737.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-14
AI Technical Summary
The existing projection function car headlight system takes up a lot of space, affecting aesthetics and heat dissipation.
The low-beam assembly is arranged under the substrate and the projection assembly is arranged above the substrate. The imaging lens group is used to achieve the integration of lighting and projection functions, reducing the overall volume of the car lights, and reserving heat dissipation space.
It achieves the reduction in the size of the headlights, and has lighting and projection functions, improving the aesthetics and heat dissipation of the headlights.
Smart Images
Figure CN223257995U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of automobile lighting, and more particularly to an automobile lamp. Background Art
[0002] With the rapid development of the automotive industry, the automotive market is increasingly demanding higher performance from headlights. The requirements for headlights are no longer limited to lighting functions. They also hope to be able to achieve diverse functions such as human-vehicle information interaction and projection. For example, when driving on a narrow road at night, being able to project boundary contour lines is beneficial to driving safety. When driving near a zebra crossing or encountering pedestrians who need to cross the road, being able to project a zebra crossing graphic can indicate the driver's intention to give way to pedestrians. Such headlights with projection functions are called projection lights. Currently, automotive headlight systems with projection functions typically have multiple light source modules. For example, the smart headlight systems currently available on the market include projection headlights, adaptive matrix headlights, and adaptive high and low beam headlights. However, each light source module is independent and occupies a large space, resulting in a large overall space occupied by the headlight system, affecting its aesthetics and heat dissipation. Utility Model Content
[0003] The utility model aims to overcome at least one defect of the above-mentioned prior art and provide a vehicle lamp for solving the problems in the prior art that the vehicle headlamp system with projection function occupies a large space and has poor aesthetics and heat dissipation.
[0004] The technical solutions adopted by this utility model are as follows:
[0005] A vehicle lamp comprises: a substrate, a low beam assembly arranged below the substrate, and a projection assembly arranged above the substrate; the low beam assembly comprises a low beam light source arranged below the substrate, an output lens for emitting light from the low beam light source and presenting a lighting effect, and a light cutter arranged on the optical path of the low beam light source; the projection assembly comprises a projection light source arranged above the substrate, and an imaging lens group for imaging the light from the projection light source to obtain a projection image; the imaging lens group is located above the output lens.
[0006] In one embodiment, the projection light source includes a projection light source disposed above a substrate, a light-collecting lens and a pattern plate disposed in sequence on the light path of the projection light source, and the pattern plate is located at a focal plane of the imaging lens group.
[0007] In one embodiment, the projection light source includes a projection light source arranged above a substrate, a reflective cup covering the projection light source, and a pattern plate arranged on the light path of the projection light source, the reflective cup converges the light from the projection light source onto the pattern plate, and the pattern plate is located in the focal plane of the imaging lens group.
[0008] In one embodiment, the pattern plate is an opaque plate provided with at least two hollow patterns, or the pattern plate is a liquid crystal display panel.
[0009] In one embodiment, the projection light source is an LED.
[0010] In one embodiment, the projection light source includes a micro light emitting diode disposed above the substrate.
[0011] In one embodiment, the projection light source includes a projection light source, a digital micromirror device arranged in the light path of the projection light source, and a converging component on the digital micromirror device for projecting and converging the light of the projection light source to the converging component on the digital micromirror device.
[0012] In one embodiment, the low beam light source includes a low beam illuminator disposed under a substrate, a low beam reflector cup covered on the low beam illuminator, and a reflector sheet disposed on the light path of the low beam illuminator and used to reflect the light collected by the low beam reflector cup to the output lens.
[0013] In one embodiment, the light cutting piece is provided on the substrate; or the light cutting piece and the substrate are integrally formed.
[0014] In one embodiment, the imaging lens group and the output lens constitute a light output lens, and the light incident surface of the light output lens is circular.
[0015] Compared with the prior art, the beneficial effects of the present invention include at least:
[0016] The headlight of this technical solution combines the lighting and projection functions in the same headlight, significantly reducing its size. Furthermore, this technical solution places the low-beam component used for lighting below the baseboard, leaving the area above the baseboard for the projection component, leaving more room for projection functions and heat dissipation. Specifically, when lighting is required, the low-beam light source below the baseboard is turned on. The light emitted by the low-beam light source is partially blocked by the light-cutting plate and then emitted through the output lens located below to produce the low-beam light pattern. When projection is required, the projection light source above the baseboard is turned on. The light emitted by the projection light source is imaged by the imaging lens group to form a preset pattern. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic structural diagram of the vehicle lamp according to Example 1 of the present utility model.
[0018] Figure 2 This is a schematic diagram of the local structure of Example 1 of the present utility model.
[0019] Figure 3This is a schematic diagram of the light effect of the vehicle lamp described in Example 1 of the present utility model. Figure 1 .
[0020] Figure 4 This is a schematic diagram of the light effect of the vehicle lamp described in Example 1 of the present utility model. Figure 2 .
[0021] Figure 5 This is a structural diagram of the vehicle lamp described in Example 2 of the present utility model.
[0022] Figure 6 This is a structural diagram of the vehicle lamp described in Example 3 of the present utility model.
[0023] Figure numerals: 10, substrate; 20, low beam assembly; 21, low beam light source; 211, low beam illuminator; 212, low beam reflector; 213, reflector; 22, output lens; 23, light-cutting plate; 30, projection assembly; 31, projection light source; 311, projection illuminator; 312, light-collecting lens; 313, pattern plate; 314, reflector; 315, micro light-emitting diode; 32, imaging lens group; 321, biconvex lens; 322, biconcave lens; 323, plano-convex lens; 40, low beam lighting area. DETAILED DESCRIPTION
[0024] The drawings in this utility model are for illustrative purposes only and are not to be construed as limiting the scope of this utility model. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the products. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.
[0025] Example 1
[0026] like Figure 1 As shown, a headlight comprises: a substrate 10, a low beam assembly 20 arranged below the substrate 10 and a projection assembly 30 arranged above the substrate 10; the low beam assembly 20 comprises a low beam light source 21 arranged below the substrate 10, an output lens 22 for emitting the light of the low beam light source 21 and presenting a lighting effect, and a light cutting piece 23 arranged on the light path of the low beam light source 21; the projection assembly 30 comprises a projection light source 31 arranged above the substrate 10, and an imaging lens group 32 for imaging the light of the projection light source 31 to obtain a projection image; the imaging lens group 32 is located above the output lens 22.
[0027] In this embodiment, the headlight, which uses low-beam illumination, is positioned below the base plate 10. This allows the projection assembly 30 to be positioned above the base plate 10, leaving more room for projection and heat dissipation. This reduces the overall size of the headlight while ensuring both illumination and projection capabilities. Specifically, when illumination is required, the low-beam light source 21 below the base plate 10 is activated. The light emitted by the low-beam light source 21 is partially blocked by the light cutter 23 and then emitted through the output lens 22 below to produce a low-beam pattern. When projection is required, the projection light source 31 above the base plate 10 is activated. The light emitted by the projection light source 31 is imaged by the imaging lens group 32 to produce a predetermined pattern.
[0028] The projection light source 31 described in this embodiment includes a projection illuminator 311 disposed above the substrate 10, a light-collecting lens 312 and a pattern plate 313, which are sequentially disposed on the optical path of the projection illuminator 311. The pattern plate 313 is located in the focal plane of the imaging lens group 32. During projection, light emitted by the projection illuminator 311 is converged onto the pattern plate 313 through the light-collecting lens 312, and then imaged by the imaging lens group 32 to form a preset pattern. Specifically, the projection illuminator 311 in this embodiment is an LED, and the pattern plate 313 is an opaque plate with at least two hollow patterns, which form a specific projection pattern through the hollow patterns. In other embodiments, the pattern plate 313 may be a liquid crystal display panel, which forms different projection patterns.
[0029] The light receiving lens 312 of this embodiment may be a single lens or a lens group formed by at least two lenses.
[0030] The low-beam light source 21 of this embodiment includes a low-beam emitter 211 disposed below the substrate 10, a low-beam reflector 212 covering the low-beam emitter 211, and a reflector 213 disposed in the optical path of the low-beam emitter 211 and configured to reflect the light collected by the low-beam reflector 212 toward the output lens 22. When output illumination is required, the low-beam emitter 211 is illuminated, and the light emitted by the low-beam emitter 211 is collected by the low-beam reflector 212 and projected onto the reflector 213. The light is then reflected and emitted from the output lens 22 located below. Due to the action of the light cutter 23, a low-beam light pattern with a clear cutoff line is achieved.
[0031] like Figure 2 As shown, the light cutting piece 23 in this embodiment is provided on the substrate 10 ; and, in order to simplify the assembly process, the light cutting piece 23 and the substrate 10 in this embodiment are integrally formed, and the light cutting piece 23 is integrated at the edge of the substrate 10 .
[0032] Furthermore, the imaging lens group and the output lens constitute a light output lens, and the light incident surface of the light output lens is circular. The imaging lens group and the output lens together form a light output lens. The circular light incident surface is more visually beautiful. Although the light output surface is not a standard spherical surface or aspherical surface, the overall contour of the light output lens is circular, which conforms to the public aesthetic and has a more compact overall structure.
[0033] In this embodiment, the imaging lens group 32 includes a biconvex lens 321 , a biconcave lens 322 , and a plano-convex lens 323 arranged in sequence along the optical path. The plane side of the plano-convex lens 323 is close to the biconcave lens 322 .
[0034] like Figure 3 As shown, when the projection function is to be realized, the target pattern can be obtained by partially lighting the micro-LED, and then projected onto the image through the imaging lens group 32. Figure 3 The desired pattern shape can be obtained by imaging at the rectangular dotted line in the figure. Figure 3 The dotted rectangle in the figure is only an example of a projection area. In other embodiments, the projection area may also be in front of the entire low beam lighting area 40 ( Figure 3 40 shown above) or rear ( Figure 3 40 shown below).
[0035] In addition to projecting graphics, the projection light source 31 of this embodiment can also achieve the effect of enhanced lighting, such as Figure 4 As shown, when a high beam effect is required, part of the light from the projection light source 31 is transmitted to the front of the low beam illumination area 40 ( Figure 4 40, and partially overlap), the light superposition enhances the lighting effect.
[0036] Example 2
[0037] like Figure 5 As shown, this embodiment is similar in structure and principle to that of Example 1, with the difference being that the projection light source 31 of this embodiment includes a projection illuminator 311 disposed above the substrate 10, a reflective cup 314 covering the projection illuminator 311, and a pattern plate 313 disposed in the optical path of the projection light source 31. The reflective cup 314 converges the light from the projection illuminator onto the pattern plate 313, which is located in the focal plane of the imaging lens group 32. That is, the initial light emission direction of the projection illuminator 311 of this embodiment is not directly toward the pattern plate 313, so the reflective cup 314 is provided to reflect the light from the projection illuminator 311 and converge it onto the pattern plate 313.
[0038] Example 3
[0039] like Figure 6As shown, this embodiment is similar in structure and principle to Embodiments 1 and 2, except that the projection light source 31 in this embodiment includes a micro-LED 315 disposed above the substrate 10. The micro-LED 315 is composed of a plurality of tiny LED units, each of which can emit light independently. Therefore, by controlling the lighting or shutting down of different LED units, various patterns can be formed, and the predetermined projection effect can be achieved by combining with the imaging lens group 32 for imaging.
[0040] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included within the scope of protection of the claims of the present invention.
Claims
1. A vehicle lamp, characterized in that: include: A substrate, a low beam assembly arranged below the substrate, and a projection assembly arranged above the substrate; the low beam assembly includes a low beam light source arranged below the substrate, an exit lens for emitting light from the low beam light source and presenting a lighting effect, and a light cutter arranged on the light path of the low beam light source; the projection assembly includes a projection light source arranged above the substrate, and an imaging lens group for imaging the light from the projection light source to obtain a projection image; the imaging lens group is located above the exit lens.
2. The vehicle lamp according to claim 1, characterized in that The projection light source includes a projection illuminator disposed above a substrate, a light-collecting lens and a pattern plate sequentially disposed on the light path of the projection illuminator, and the pattern plate is located at the focal plane of the imaging lens group.
3. The vehicle lamp according to claim 1, characterized in that The projection light source includes a projection light source arranged above the substrate, a reflective cup covering the projection light source, and a pattern plate arranged on the light path of the projection light source. The reflective cup converges the light from the projection light source onto the pattern plate, and the pattern plate is located on the focal plane of the imaging lens group.
4. The vehicle lamp according to claim 2 or 3, characterized in that: The pattern plate is an opaque plate provided with at least two hollow patterns, or the pattern plate is a liquid crystal display panel.
5. The vehicle lamp according to claim 2 or 3, characterized in that: The projection light source is an LED.
6. The vehicle lamp according to claim 1, characterized in that The projection light source includes a micro light emitting diode arranged above the substrate.
7. The vehicle lamp according to claim 1, characterized in that The projection light source includes a projection illuminant, a digital micromirror device arranged on the optical path of the projection illuminant, and a converging component on the digital micromirror device for projecting and converging the light of the projection illuminant to the converging component on the digital micromirror device.
8. The vehicle lamp according to any one of claims 1, 2, 3, 6 and 7, characterized in that: The low beam light source includes a low beam illuminator arranged below the substrate, a low beam reflector cup covered on the low beam illuminator, and a reflector sheet arranged on the light path of the low beam illuminator and used to reflect the light collected by the low beam reflector cup to the output lens.
9. The vehicle lamp according to any one of claims 1, 2, 3, 6 and 7, characterized in that: The light cutting piece is provided on the substrate; or the light cutting piece and the substrate are integrally formed.
10. The vehicle lamp according to any one of claims 1, 2, 3, 6 and 7, characterized in that: The imaging lens group and the output lens constitute a light output lens, and the light incident surface of the light output lens is circular.