Light-emitting device and vehicle
By adopting a combined design of light source, optical diffusion film and guiding elements in the headlights, the balance problem between aesthetics and luminous uniformity of the headlights is solved, and a more uniform luminous effect and a lighter structure is achieved, which improves light efficiency and reduces costs.
Patent Information
- Application Number
- CN202421739411.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-22
AI Technical Summary
When pursuing aesthetics, existing car lights are difficult to find a balance between ensuring uniformity of luminescence and aesthetics, resulting in uneven luminescence effects and large overall weight.
The light emitting device design is adopted that includes a light source, an optical diffusion film and a guiding element. The optical diffusion film uniforms the light, while the guiding element guides the light to the optical diffusion film, improves the uniformity of the luminous effect, and reduces the overall weight by optimizing the structure.
A more uniform luminous effect is achieved, which improves light efficiency, while reducing the overall weight of the luminous device, optimizing the assembly process and reducing costs.
Smart Images
Figure CN222925347U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of vehicle lamps, and particularly to a lighting device and a vehicle. Background Art
[0002] Lighting devices are configured in vehicles to ensure safe driving. Vehicle lamps are important components of a vehicle, mainly including types such as headlamps, tail lamps, turn signals, fog lamps, and daytime running lamps. They not only have the conventional function of night lighting, but are also an important communication tool for drivers to convey driving intentions to other people. In addition, vehicle lamps are also a main part of the vehicle appearance and can play an important role in enhancing the aesthetics of the vehicle and improving its recognition. With the development of the automotive industry, the appearance styles of vehicle lamps have gradually increased, and in recent years, there has been an increasing pursuit of the aesthetics of vehicle lamps. It is necessary to obtain a more modern aesthetic appearance while ensuring the lighting uniformity and other effects of the vehicle lamps. Utility Model Content
[0003] Therefore, the purpose of this application is to propose a lighting device and a vehicle that can at least partially solve the above-mentioned problems.
[0004] This application discloses a lighting device, including: a light source configured to emit light; an optical diffuser configured to homogenize the light from the light source; a guiding element disposed between the light source and the optical diffuser and configured to guide the light from the light source to the optical diffuser.
[0005] According to a non-limiting example of this application, the guiding element is a reflector, a light guide, or a baffle for restricting light.
[0006] According to a non-limiting example of this application, the light guide is a cylindrical light guide, a thick-walled light guide, or a light guide plate.
[0007] According to a non-limiting example of this application, the lighting device further includes a lens disposed downstream of the optical diffuser.
[0008] According to a non-limiting example of this application, the optical diffuser is configured to be attached to the lens.
[0009] According to a non-limiting example of this application, the optical diffuser is configured to abut against the lens through the guiding element.
[0010] According to a non-limiting example of this application, the optical diffuser is configured to be fixed on the guiding element.
[0011] According to a non-limiting example of this application, the optical diffuser is configured such that at least one of its surface and interior has optical microstructures or optical diffusing particles.
[0012] According to a non-limiting example of the present application, a light-transmitting pattern is disposed on the optical diffusion film, and the light-transmitting pattern is formed by applying an opaque coating on the optical diffusion film.
[0013] According to another aspect of the present application, the present application further provides a vehicle having the light-emitting device described in any one of the above.
[0014] According to the light-emitting device of the present application, by using the optical diffusion film, the uniformity of the light-emitting effect of the light-emitting device can be improved, and at the same time, the overall weight of the light-emitting device can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Other objects and advantages of the present disclosure will become apparent from the following detailed description of the present disclosure with reference to the accompanying drawings, and can help to have a comprehensive understanding of the present disclosure.
[0016] These and / or other aspects, features, and advantages of the present disclosure will become apparent and be readily understood from the following description of the illustrative embodiments in conjunction with the accompanying drawings, in which:
[0017] Figures 1-3 Exemplarily shown is a schematic diagram of a first embodiment of a light-emitting device according to the present application.
[0018] Figures 4-6 Exemplarily shown is a schematic diagram of a second embodiment of a light-emitting device according to the present application.
[0019] Figures 7-8 Exemplarily shown is a schematic diagram of a third embodiment of a light-emitting device according to the present application.
[0020] Figures 9-10 Exemplarily shown is a schematic diagram of a fourth embodiment of a light-emitting device according to the present application.
[0021] Figures 11-12 Exemplarily shown is a schematic diagram of a fifth embodiment of a light-emitting device according to the present application.
[0022] Figures 13-17 Exemplarily shown is a schematic diagram of a sixth embodiment of a light-emitting device according to the present application.
[0023] Figures 18-19 Exemplarily shown is a schematic diagram of a seventh embodiment of a light-emitting device according to the present application. DETAILED DESCRIPTION
[0024] Other objects and advantages of the present disclosure will become apparent from the following detailed description of the present disclosure with reference to the accompanying drawings, and can help to have a comprehensive understanding of the present disclosure.
[0025] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The following description of the embodiments of the present disclosure with reference to the drawings is intended to explain the general inventive concept of the present disclosure. As those skilled in the art should be aware, the described embodiments can be modified in various different ways without departing from the concept of the present application, and should not be construed as a limitation of the present disclosure. Therefore, the drawings and the description are exemplary in nature and not restrictive. In the following text, the same reference numerals generally denote elements having the same or similar functions.
[0026] In addition, in the following detailed description, for the sake of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is obvious that one or more embodiments can also be implemented without these specific details. In other cases, well-known structures and devices are illustrated in a schematic manner to simplify the drawings.
[0027] Figure 1 is a schematic diagram of a light-emitting device according to the present application. Among them, the light-emitting device 100 mainly includes: a light source 101 configured to emit light; an optical diffusion film 102 configured to homogenize the light from the light source 101; and a guiding element 103 disposed between the light source 101 and the optical diffusion film 102 and guiding the light from the light source 101 to the optical diffusion film 102.
[0028] In one example, the light-emitting device 100 may further include a lens 104. The lens 104 is disposed downstream of the optical diffusion film and is configured to transmit the light diffused by the optical diffusion film 102. The lens 104 can further adjust the light diffused by the optical diffusion film 102, and can also play a role in protecting the optical diffusion film 102, capable of preventing the optical diffusion film 102 from being damaged or scratched and extending its service life. However, those skilled in the art know that the lens 104 is not an essential component of the light-emitting device 100, and whether to configure it can be determined according to actual needs.
[0029] In one example, the light-emitting device 100 further includes a decorative frame 106 for shielding the area outside the light-emitting window and fixing the lens 104. Specifically, the decorative frame 106 can be a separate part or can be integrally formed with the lens 104 by an injection molding process. Integrating the decorative frame 106 and the lens 104 by injection molding can simplify the assembly process of the light-emitting device and reduce the production cost.
[0030] In a specific example, the light source 101 is a semiconductor light source, and in particular a light-emitting diode. The light source 101 emits light in the half-space defined by its main plane. Of course, the light source 101 can also adopt any suitable light-emitting device, and the present application does not make specific limitations.
[0031] In a specific example, the optical diffuser film 102 can be made of any suitable light-transmitting and scattering material, such as, but not limited to, polymethyl methacrylate (PMMA), polycarbonate (PC), and the like. The optical diffuser film 102 is configured to homogenize the light from the light source 101, that is, to uniformly diffuse the light from the light source through the optical diffuser film 102. Thus, the uniformity of the lighting effect can be further improved. Preferably, the scattering angle of the optical diffuser film is greater than 30 degrees and the transmittance is greater than 50% to ensure the uniformity of the lighting effect.
[0032] In one example, the guiding element 103 is a mirror, a light guide, or a baffle for restricting light. The type of the guiding element 103 can be selected according to actual needs, and the present application does not make specific limitations.
[0033] Figures 1-3 Different implementation manners of the first embodiment in which the guiding element 103 is a mirror are shown. As Figure 1 and 2 shown, the optical diffuser film 102 is configured to be disposed in contact with the lens 104.
[0034] The optical diffuser film 102 preferably has a small thickness. The thin thickness enables the shape of the optical diffuser film 102 to be adjusted according to the shape of the lens 104 to better fit with the lens 104, thereby ensuring the lighting effect of the light-emitting device. In some examples, the optical diffuser film 102 is flexible, and such a setting can better ensure the degree of fit with the lens 104 and further optimize the lighting effect.
[0035] In one example, as Figure 2 shown, the optical diffuser film 102 is configured to abut against the lens 104 through the guiding element 103, that is, the optical diffuser film 102 is fixed by the pressing between the guiding element 103 and the lens 104. Such an operation can eliminate the need for using an additional fixing structure, simplify the structure and assembly process of the light-emitting device 100, and thus save costs.
[0036] In other examples, as Figure 3 shown, the optical diffuser film 102 can also be fixed on the guiding element 103. Such a setting can ensure the degree of fit between the optical diffuser film 102 and the guiding element 103, improve the light efficiency, and obtain an ideal lighting effect.
[0037] In a specific example, at least one of the surface and the interior of the optical diffusion film 102 has an optical microstructure or optical diffusion particles to uniformly scatter the light rays from the light source. The optical microstructure or optical diffusion particles may be disposed only on the surface or inside the optical diffusion film 102, or may be disposed on both the surface and inside the optical diffusion film 102 simultaneously, and the present application does not make specific provisions. As needed, the morphology, size, density, distribution mode, etc. of the optical microstructure and optical diffusion particles of the optical diffusion film 102 can be adjusted to obtain different scattering effects.
[0038] In Figures 1-3 the illustrated example, the guiding element 102 is a mirror. The mirror includes a reflective surface on its inner surface. In a specific example, the mirror is made of a material with good heat resistance, such as made of glass or synthetic polymers (such as polycarbonate PC or polyetherimide PEI).
[0039] Specifically, the mirror can be an indirect mirror as shown in Figures 1-3 , and all light rays are emitted after being reflected by the mirror; it can also be a direct mirror as shown in Figures 4-6 , and part of the light rays are emitted after being reflected by the mirror, and part of the light rays are directly emitted without being reflected by the mirror. The present application does not limit the type of the mirror. Specifically, Figures 4-5 shows a situation where the optical diffusion film 102 is configured to be attached to the lens 104, Figure 6 shows a situation where the optical diffusion film 102 can also be fixed on the guiding element 103. Among them Figure 4 shows that the optical diffusion film 102 is configured to abut against the lens 104 through the guiding element 103, Figure 5 and the optical diffusion film 102 is attached to the lens 104 in
[0040] Specifically, the light source 101 is arranged at and near the focus of the reflective surface of the mirror, so that the light rays of the light source 101 can be collected more efficiently and reflected by the reflective surface along the optical axis.
[0041] In the third to seventh embodiments of the present application, as shown in Figures 7-19 , embodiments using different guiding elements 103 are shown. For the sake of simplicity, only the parts different from the first embodiment will be described in the following description.
[0042] Specifically, in the third to sixth embodiments, the guiding element 103 is an optical waveguide. Using an optical waveguide to guide and transmit light can improve the utilization rate of light from the light source and enhance the light efficiency. As a non-limiting example, the optical waveguide can be made of, for example, polymethyl methacrylate (PMMA), such as optical waveguides with part numbers LED 8N LD12, LD24, LD48, LD96, or it can be made of polycarbonate (PC), such as the optical waveguide with part number EL2245. Its color can be selected as needed, for example, but not limited to, colorless, light red, red, and so on.
[0043] More specifically, the type of the optical waveguide can be a cylindrical optical waveguide, as shown in Figure 11 and 12 shown, or it can be a thick-walled optical waveguide, as shown in Figure 9 and 10 shown, or an optical waveguide with a paraboloid, as shown in Figure 7 and 8 shown, or a light guide plate, as shown in Figures 13-17 shown. Figures 7-17 The examples in
[0044] show different fixing methods between the optical diffusion film 102, the guiding element 103, and the lens 104 when different types of optical waveguides are selected for the guiding element 103.
[0044] When the optical waveguide is a thick-walled optical waveguide, as shown in Figure 9 and 10 shown, a reflecting surface can be provided on the thick-walled optical waveguide to adjust the direction of light, or it can be a thick-walled optical waveguide in a direct light form. The present application does not limit the type of the thick-walled optical waveguide. Figure 10 shows the case where the optical diffusion film 102 is configured to be attached to the lens 104, Figure 9 and shows the case where the optical diffusion film 102 can also be fixed on the guiding element 103.
[0045] When the optical waveguide is a paraboloid optical waveguide, as shown in Figure 7 and 8 shown, the light from the light source is reflected by the paraboloid to adjust the direction of light. Figure 8 shows the case where the optical diffusion film 102 is configured to be attached to the lens 104, Figure 7 and shows the case where the optical diffusion film 102 can also be fixed on the guiding element 103.
[0046] When the type of the optical waveguide is a cylindrical optical waveguide or a light guide plate, optical decoupling elements can be provided on the rear surface of the optical waveguide opposite to the light-emitting surface to break the total reflection condition of light. Examples of the optical decoupling elements include, but are not limited to, protrusions, depressions, serrations, leather grains, stripes, squares, and so on. In the fourth embodiment where the optical waveguide is a cylindrical optical waveguide, Figure 12The situation where the optical diffusion film 102 is configured to be attached to the lens 104 is shown. Figure 11 The situation where the optical diffusion film 102 can also be fixed on the guiding element 103 is shown. In the fifth embodiment where the light guide is a light guide plate, Figure 13 and 14 The situation where the optical diffusion film 102 is configured to be attached to the lens 104 is shown. Figure 15 The situation where the optical diffusion film 102 can also be fixed on the guiding element 103 is shown. Among them Figure 13 The situation where the optical diffusion film 102 is configured to abut against the lens 104 through the guiding element 103 is shown. Figure 14 The optical diffusion film 102 is attached to the lens 104.
[0047] In some examples, a light-transmitting pattern 1021 can also be formed on the optical diffusion film 102, as Figure 16 and 17 shown. Among them, Figure 16 is the front view of the optical diffusion film formed with the light-transmitting pattern, Figure 17 is the side view of the optical diffusion film formed with the light-transmitting pattern. The light-transmitting pattern 1021 is particularly suitable for being formed when the light guiding element 103 is a light guide plate. However, in other embodiments, a light-transmitting pattern can also be formed on the optical diffusion film 102 as needed, and the examples of this application do not constitute a limitation. The light-transmitting pattern 1021 is formed by applying a light-shielding layer on the optical diffusion film 102 and then removing the light-shielding material at the pattern positions. Specifically, the light-transmitting pattern can be formed by spraying an opaque coating 1022 on the optical diffusion film 102, such as spraying a black primer layer, and then making the light-transmitting pattern by printing or laser engraving. Such an operation can ensure that only the pattern part of the optical diffusion film 102 is light-transmitting, so that when the light-emitting device 100 is in the lit state, a required pattern is generated to better transmit signals and obtain a better lighting effect. The light-transmitting pattern can also be realized in other ways, and this application does not specifically limit the formation process of the light-transmitting pattern.
[0048] In another example, as Figure 18 and 19 shown, the guiding element 103 is a baffle for restricting light. The light from the light source is directly incident on the optical diffusion film 102 and exits after being diffused by the optical diffusion film 102. The baffle for restricting light is used to restrict the emission range of the light from the light source. Figure 18 The situation where the optical diffusion film 102 is configured to be attached to the lens 104 is shown. Figure 19 The situation where the optical diffusion film 102 can also be fixed on the guiding element 103 is shown.
[0049] The light-emitting device according to the present application can achieve a more uniform light-emitting effect, realize a higher light efficiency, and can reduce the overall weight of the light-emitting device, optimize the assembly process, and reduce costs.
[0050] The light-emitting device of the present application can be designed to perform an illumination function or can be designed to perform a signaling function, such as signaling functions of taillights, direction indicators, daytime running lights, or position lights, etc. The present application does not make specific limitations thereto.
[0051] The present application also provides a vehicle having the aforementioned lighting device 100. The vehicle has the advantages of the aforementioned lighting device. The term "vehicle" mentioned herein may refer to any type of vehicle, such as a vehicle, a motorcycle, or any other mobile machine capable of carrying at least one passenger or for transporting people or goods.
[0052] It will be understood that in this document, the terms "integral" and "integrated" are in contrast to "independent" or "separate", that is, an integral or integrated component exists as a single entity and does not include parts that are independent or separated from each other in space. For example, the various parts of an integral or integrated component may be formed simultaneously (such as by molding) or may be formed separately and then assembled together to form a single component.
[0053] Although the present disclosure has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate the preferred embodiments of the present disclosure and should not be construed as a limitation to the present disclosure. The dimensional ratios in the drawings are merely illustrative and should not be construed as a limitation to the present disclosure.
[0054] Although some embodiments of the general concept of the present disclosure have been shown and described, those of ordinary skill in the art will understand that changes can be made to these embodiments without departing from the principles and spirit of the general disclosure concept, and the scope of the present disclosure is defined by the claims and their equivalents.
Claims
1. A light emitting device (100), characterized in that: include: a light source (101) configured to emit light; an optical diffuser film (102) configured to homogenize light from the light source (101); The guiding element (103) is disposed between the light source (101) and the optical diffusion film (102) and guides the light from the light source (101) toward the optical diffusion film (102).
2. The lighting device (100) according to claim 1, characterized in that: The guiding element (103) is a reflector, a light guide or a baffle for limiting light.
3. The lighting device (100) according to claim 2, characterized in that: The light guide is a cylindrical light guide, a thick-walled light guide or a light guide plate.
4. The light emitting device (100) according to claim 1, characterized in that: The light emitting device (100) further comprises a lens (104), wherein the lens (104) is arranged downstream of the optical diffusion film (102).
5. The lighting device (100) according to claim 4, characterized in that: The optical diffusion film (102) is configured to be bonded to the lens (104).
6. The lighting device (100) according to claim 5, characterized in that: The optical diffusion film (102) is configured to abut against the lens (104) via a guide element (103).
7. The lighting device (100) according to claim 1, characterized in that: The optical diffusion film (102) is configured to be fixed on the guiding element (103).
8. The lighting device (100) according to claim 1, characterized in that: The optical diffusion film (102) is configured such that at least one of its surface and interior has optical microstructures or optical diffusion particles.
9. The lighting device (100) according to claim 1, characterized in that: The optical diffusion film (102) is provided with a light-transmitting pattern (1021), and the light-transmitting pattern is formed by applying a light-impermeable coating (1022) on the optical diffusion film (102).
10. A vehicle, characterized in that: The vehicle comprises the lighting device (100) according to any one of claims 1 to 9.