Light-emitting assembly, lighting device and vehicle
By adopting a cover design in the lighting device and utilizing the louver-like surfaces of the light-guiding element and the light-shielding member, the problems of heat dissipation and light leakage are solved, thereby achieving the effects of efficient heat dissipation and light leakage prevention.
Patent Information
- Application Number
- CN202422242771.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-09-12
AI Technical Summary
In traditional lighting devices, the opening design results in poor heat dissipation and is prone to light leakage.
A cover design is adopted, including a light-guiding element and a light-shielding element, forming a louver-like surface, with an opening located at a step position for heat dissipation while preventing light leakage.
A good heat dissipation effect is achieved while avoiding light leakage, thereby improving the overall performance of the lighting device.
Smart Images
Figure CN223345209U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of vehicle lighting, and in particular to a light-emitting component, a lighting device and a vehicle. Background Art
[0002] In vehicles, lighting devices are needed to perform various functions, such as high and low beam lighting, illuminated logos, illuminated grilles, styling / decoration, logo functions, signal functions, exterior lighting, etc.
[0003] In traditional lighting devices, openings are usually provided on the back or side of the lamp housing to ensure heat dissipation, but these openings may cause light leakage. Utility Model Content
[0004] An object of the present disclosure is to solve or overcome at least one of the above and other problems and deficiencies in the prior art.
[0005] The utility model provides a light-emitting component, comprising: a light source, which is configured to emit light and is arranged on a PCB; a light-guiding element, which is arranged in front of the light source and is configured to conduct light from the light source; and a cover, which is configured to accommodate the PCB and, together with a light-shielding member arranged around the light-guiding element, provides an isolated space for the PCB and the light-guiding element, wherein an opening is formed on the housing, the opening being formed at a position close to the PCB and used for heat dissipation of the PCB.
[0006] In some embodiments, the cover includes a louvered surface including a first surface and a second surface, and a step formed by the first surface and the second surface, wherein the opening is formed at the step location.
[0007] In some embodiments, the lighting device further includes a light guide, and the number of the openings is plural.
[0008] In some embodiments, the first surface and the second surface are formed on side surfaces of the cover.
[0009] In some embodiments, the side surface is substantially perpendicular to an extension direction of a main plane of the PCB board.
[0010] In some embodiments, edges of the first surface and the second surface are oriented at a predetermined angle relative to the PCB board.
[0011] In some embodiments, the first surface and the second surface each have a matching trapezoidal shape.
[0012] In some embodiments, the cover is made of hard plastic material through an injection molding process.
[0013] According to another aspect of the present disclosure, the present invention further provides a lighting device, which includes the light-emitting assembly described in any embodiment of the present disclosure.
[0014] According to yet another aspect of the present disclosure, the present invention further provides a vehicle, which includes the light-emitting assembly or lighting device described in any one of the embodiments of the present disclosure.
[0015] The light-emitting assembly according to the present application can have a good heat dissipation effect and can avoid light leakage. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] 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, which will help to provide a comprehensive understanding of the present disclosure.
[0017] These and / or other aspects, features, and advantages of the present disclosure will become apparent and readily understood from the following description of illustrative embodiments taken in conjunction with the accompanying drawings, in which:
[0018] Figure 1 A perspective view schematically illustrates a light emitting assembly according to an exemplary embodiment of the present disclosure.
[0019] Figure 2 A schematic diagram schematically illustrates another perspective of a light emitting assembly according to an exemplary embodiment of the present disclosure.
[0020] Figure 3 Schematically shown Figure 1 A partial enlarged view of the shell at the louvered surface.
[0021] Figure 4 A schematic diagram schematically illustrates a housing and a PCB board of a light emitting assembly according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION
[0022] 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, which will help to provide a comprehensive understanding of the present disclosure.
[0023] The following embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In this specification, identical or similar components are indicated by identical or similar reference numerals. The following description of the embodiments of the present disclosure with reference to the accompanying drawings is intended to explain the overall disclosed concept of the present disclosure and should not be construed as limiting the present disclosure.
[0024] In addition, in the following detailed description, for ease of illustration, numerous specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments can be practiced without these specific details. In other cases, well-known structures and devices are shown in diagrammatic form to simplify the accompanying drawings.
[0025] According to the light emitting assembly 100 of the present disclosure, Figure 1 As shown, it includes: a light source 101, which is configured to emit light and is arranged on a PCB board 102; a light guide element 103, which is arranged in front of the light source and is configured to conduct light from the light source; a cover body 104, which is configured to accommodate the PCB board 102 and, together with a light shielding member 106 arranged around the light guide element 103, provides an isolated space for the PCB board 102 and the light guide element 103, wherein an opening 105 is formed on the housing, and the opening 105 is formed at a position close to the PCB board 102 and is used for heat dissipation of the PCB board 102.
[0026] The light source 101 of the light emitting assembly 100 according to the present application may include any suitable light emitting device, such as an LED, a laser, etc., and the present application does not impose any specific limitation.
[0027] The light guide element 103 of the light emitting assembly 100 according to the present application may include any suitable light guiding element, such as but not limited to a reflector, a collector, a collimator, light guides of different forms, etc. Figure 2 In the example shown, the light guide element 103 is a thick-walled light guide with collimation. However, it should be noted that this does not constitute a limitation to the present application.
[0028] The cover 104 is configured to provide an isolated space for the light guide element 103 and the PCB board 102 , as well as the light source 101 arranged thereon, thereby preventing light from leaking into the interior of the lamp housing and causing undesirable effects.
[0029] In order to prevent light leakage while ensuring heat dissipation, an opening 105 is formed on the cover 104 of the light-emitting component 100 according to the present application. The opening 105 allows air to pass through, thereby taking away the heat generated by the light source and electronic components on the PCB board.
[0030] In one example, if Figure 2 and 3 As shown, the cover 104 includes a louvered surface, which includes a first surface 1041 and a second surface 1042, and a step formed by the first surface 1041 and the second surface 1042, wherein the opening 105 is formed at the step position. Such a design can further prevent light leakage caused by the presence of the opening.
[0031] Specifically, the first surface 1041 and the second surface 1042 are arranged in an alternating pattern, wherein the first surface 1041 is the plane of the cover 104, and the second surface 1042 is recessed relative to the first rear surface 1041. The first surface 1041 and the second surface 1042 form a step. Those skilled in the art will appreciate that the size of the step can be adjusted as needed, and this application should not be construed as limiting. An opening 105 is formed at the step formed by the first surface 1041 and the second surface 1042. The opening 103 can be a portion of the step or the entire step, and this application should not be construed as limiting. With this design, light from the light source is blocked by the first surface 1041 and the second surface 1042, so that only the first surface 1041 and the second surface 1042 are visible from the viewing direction, thereby preventing light leakage. However, the opening 105 formed at the step still allows airflow to pass through, removing heat generated by the light source and electronic components on the PCB. This prevents light leakage while ensuring effective heat dissipation.
[0032] Specifically, the openings 105 can be designed at a portion of the steps or at all the steps. Preferably, the number of the openings 105 is designed to be multiple to improve heat dissipation efficiency.
[0033] In one example, the first surface 1041 and the second surface 1042 are formed on side surfaces of the cover 104. The side surfaces are substantially perpendicular to the extension direction of the main plane of the PCB 102. This arrangement eliminates obstructions to air flow, facilitating air circulation. The side surfaces of the cover 104 have a smaller area than the main body, which can also reduce the possibility of light leakage to a certain extent.
[0034] In one example, if Figure 4 The edges of the first surface 1041 and the second surface 1042 are oriented at a predetermined angle relative to the PCB 102. The directions in which the first and second surfaces 1041, 1042 extend can form a predetermined angle with the optical axis, and the angular orientation of the edges of the first and second surfaces 1041, 1042 can be defined relative to the direction of the optical axis and the directions in which the first and second surfaces extend. The predetermined angles ensure that the PCB 102, light source 101, and light guide element 103 are not visible even when viewed from the direction of the opening 105. This design further prevents light leakage.
[0035] Specifically, if Figure 3As shown, the first surface 1041 and the second surface 1042 each have a mutually matching trapezoidal shape to better cover the area that does not require lighting, and can increase the size of the opening 105 to improve the heat dissipation effect. In other examples, the first surface 1041 and the second surface 1042 can also have other shapes, such as triangles, rectangles, etc., which are not specifically limited in this application.
[0036] Specifically, the cover 104 is made of a hard plastic material through an injection molding process to reduce the weight of the optical component and reduce the process cost. The cover 104 can also be made of other materials through other processes, which is not limited in this application.
[0037] The light-emitting assembly according to the present application can avoid light leakage to the greatest extent while ensuring the heat dissipation effect.
[0038] The present application also provides a lighting device having the aforementioned light-emitting assembly. The lighting device has at least the aforementioned advantages of the light-emitting assembly 100. In addition to the aforementioned light-emitting assembly, the lighting device may also have a lamp housing, a lens, other optical elements, etc., which are not limited by the present application.
[0039] The lighting device according to the present application can be used as a lighting function of a vehicle, such as high and low beams, and can also be used to realize other lighting or signal indication functions, such as turn signals, brake lights, side marker lights, parking lights, daytime running lights, position lights, grille lights, etc.
[0040] The lighting device 100 according to the present application can ensure that a dynamic lighting effect and a static lighting effect are simultaneously achieved with the same structure, thereby meeting different needs, avoiding separate design and manufacturing for different structures, and saving costs.
[0041] 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" as used herein may refer to any type of vehicle, such as a motor vehicle, a motorcycle, or any other mobile machine capable of carrying at least one passenger or for transporting people or goods.
[0042] It will be understood that in this article, the terms "integrated" and "integrated" are relative to "independent" or "separate", that is, the integral or integrated component exists as a single body and does not include parts that are spatially independent or separate from each other. For example, the various parts of the integral or integrated component can be formed at the same time (such as molding), or they can be formed separately and then assembled together into a single body.
[0043] Although the present disclosure is described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the present disclosure and are not to be construed as limiting the present disclosure. The dimensional ratios in the drawings are merely illustrative and are not to be construed as limiting the present disclosure.
[0044] Although some embodiments of the general inventive concept of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the general inventive concept of the present disclosure, the scope of which is defined by the claims and their equivalents.
Claims
1. A light emitting assembly (100), characterized in that: include: A light source (101) configured to emit light, wherein the light source (101) is arranged on a PCB board (102); a light guide element (103), which is arranged in front of the light source (101) and is configured to guide light from the light source; The cover (104) is configured to accommodate the PCB (102) and, together with a light shielding member (106) disposed around the light guide element (103), provide an isolated space for the PCB (102) and the light guide element (103), wherein an opening (105) is formed on the cover, the opening (105) being formed at a position close to the PCB (102) and used for heat dissipation of the PCB (102).
2. The light emitting assembly (100) according to claim 1, characterized in that The cover (104) includes a louvered surface, the louvered surface includes a first surface (1041) and a second surface (1042), and a step formed by the first surface (1041) and the second surface (1042), wherein the opening (105) is formed at the step position.
3. The light emitting assembly (100) according to claim 2, characterized in that There are multiple openings.
4. The light emitting assembly (100) according to claim 2, characterized in that The first surface (1041) and the second surface (1042) are formed on the side surfaces of the cover body (104).
5. The light emitting assembly (100) according to claim 4, characterized in that The side surface is substantially perpendicular to the extension direction of the main plane of the PCB board (102).
6. The light emitting assembly (100) according to claim 5, characterized in that The edges of the first surface (1041) and the second surface (1042) are oriented at a predetermined angle relative to the PCB board (102).
7. The light emitting assembly (100) according to claim 2, characterized in that The first surface (1041) and the second surface (1042) respectively have mutually matching trapezoidal shapes.
8. The light emitting assembly (100) according to any one of claims 1 to 7, characterized in that: The cover (104) is made of hard plastic material through an injection molding process.
9. A lighting device, characterized in that: The light emitting assembly (100) comprises any one of claims 1-8.
10. A vehicle, characterized in that: The invention comprises the light-emitting assembly (100) according to any one of claims 1 to 8 or the lighting device according to claim 9.