Car lamp light blocking structure

Abstract

The utility model discloses a light blocking structure of a car lamp. The light blocking structure comprises a PCB (printed circuit board) and a reflector arranged on one side of the PCB, a first opening is formed in the end, close to the PCB, of the reflecting mirror, a containing space is formed by the first opening, and a plurality of LED light sources located in the containing space of the first opening are arranged on the surface of the PCB; the first opening wall of the reflector extends towards the middle to form a light blocking structure, and the light blocking structure is located in the light emitting direction of the LED light source. The LED lamp is small in size and not prone to damage, the light blocking effect of a plurality of LEDs can be achieved without adding other light blocking structures, and the light effect utilization rate is higher.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to a light-blocking structure for vehicle lights. Background Technology

[0002] Currently, LED reflector headlights are the most common type of automotive lighting solution. The reflector is typically designed as a parabola or ellipsoid. If the LED is off-center and close to the base of the reflector, the light enters the reflective surface at a greater angle. After reflection, the light rays may intersect or converge in a certain area, such as near the rim, causing a change in the reflection path and resulting in a non-uniform light distribution. Furthermore, since LEDs emit surface light rather than point light, the light rays undergo complex superposition within the reflector, making it easier for them to converge and form bright areas, ultimately leading to localized bright spots and affecting the uniformity of the headlight. To address this issue, a common method is to block unnecessary light paths, obstructing direct or reflected light without affecting the main light path.

[0003] Referring to the compact vehicle lamp structure in existing patent CN222142783U, although it uses a light-blocking structure to reduce the risk of LED bright spots, it requires two modules to work together to achieve light blocking. Therefore, it is not suitable for single-module designs, limiting its application scenarios and increasing the risk of damage. Repair is required if even one module malfunctions. Referring to the lamp fixture with light-blocking and reflecting structures in existing patent CN214948765U, its light-blocking structure has a light-emitting hole that allows light to exit to the reflector. While it achieves a light-blocking effect, only a small portion of the light is emitted, requiring a larger light-blocking structure, resulting in low light efficiency and a more complex structure, making mold manufacturing more difficult. Referring to the uniform light-emitting device with a light-shielding structure in existing patent CN112066336A, its light path requires passing through both a reflector and a housing. The large number of parts and congested internal space hinder the development of other functional components and increase costs. Overall, existing internal light-blocking structures for vehicle lights still have significant shortcomings in terms of component cost, structural shape, application scenarios, and service life. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a light-blocking structure for vehicle lights that is small in size, not easily damaged, and can achieve the light-blocking effect of multiple LEDs without the need to add other light-blocking structures, thus achieving higher light efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A light-blocking structure for vehicle lights includes a PCB board and a reflector disposed on one side of the PCB board;

[0007] The reflector has a first opening at one end near the PCB board, which forms an accommodating space. A plurality of LED light sources are disposed on the surface of the PCB board within the accommodating space of the first opening.

[0008] A light-blocking structure extends from the first opening wall of the reflector toward the center, and the light-blocking structure is located in the light-emitting direction of the LED light source.

[0009] Furthermore, the end of the reflector away from the PCB board is formed with a second opening, which faces the light-emitting surface of the headlight.

[0010] Furthermore, the range of the second opening is larger than that of the first opening.

[0011] Furthermore, the reflector includes a circumferentially distributed reflective surface.

[0012] Furthermore, the reflecting surface is a parabolic surface, an ellipsoidal surface, or a composite surface.

[0013] Furthermore, the light emitted by the LED light source is located at the focal point of the reflective surface.

[0014] Furthermore, the reflective surface has a reflective pattern.

[0015] Furthermore, the light-blocking structure and the reflector are integrally injection-molded structures.

[0016] By adopting the above technical solution, this utility model has the following beneficial effects:

[0017] 1. This utility model designs a first opening at the end of the reflector near the PCB board, allowing the LED light source to reside within it. A light-blocking structure extends from the wall of the first opening towards the center, effectively blocking a portion of the LED light and thus solving the problem of bright spots when the vehicle headlights are illuminated. Simultaneously, the presence of the first opening provides a certain degree of blocking and focusing effect on the LED light, allowing the light-blocking structure to be smaller. When multiple LED light sources are emitting light, the problem of bright spots can be solved without increasing the number of light-blocking structures, or with a smaller number of structures, thereby reducing component costs and quantity, and saving materials.

[0018] 2. Based on solving the problem of bright spots, this utility model can design a smaller light-blocking structure, which is not easily damaged, blocks less light, and has a higher light efficiency.

[0019] 3. The light-blocking structure and the reflector of this utility model are integrally injection molded, without the need for installation and assembly with other components. Located inside the reflector, it provides better protection for the light-blocking structure, making it less prone to damage and reducing maintenance costs.

[0020] 4. The light-blocking structure of this utility model is relatively simple, the manufacturing process is faster, the size is smaller, and it is applicable to a wider range of scenarios. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0023] Among them, 1. LED light source; 2. PCB board; 3. reflector; 31. first opening; 32. second opening; 33. reflective surface; 34. light-blocking structure. Detailed Implementation

[0024] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0025] like Figure 1 , 2 As shown, in this embodiment, a headlight blocking structure is provided, which mainly consists of a PCB board 2, a reflector 3, and two LED light sources 1. The two LED light sources 1 are disposed on the surface of the PCB board 2, and the reflector 3 is fixedly installed on one side of the LED light sources 1 on the PCB board 2. The light emitted by the LED light sources 1 can form uniform parallel light after being reflected by the reflector 3.

[0026] Specifically, the reflector 3 in this embodiment includes a circumferentially arranged reflective surface 33. The reflective surface 33 has the function of reflecting light. The base surface of the reflective surface 33 can be a parabola, an ellipsoid, or a composite surface. For example, in this embodiment, it is a funnel-shaped parabola. The reflective surface 33 also has a reflective pattern to improve the uniformity of lighting. The light emitted by the LED light source 1 is located at the focal position of the reflective surface 33. After being reflected by the reflective surface 33, the LED light forms uniform parallel light.

[0027] To address the issue of bright spots after illumination, in this embodiment, a first opening 31 is formed at the end of the reflector 3 closest to the PCB board 2. The first opening 31 forms a receiving space, and the two LED light sources 1 are located within this space. Simultaneously, a light-blocking structure 34 extends towards the center from the wall of the first opening 31 of the reflector 3, positioned in the direction of LED light emission. The light-blocking structure 34 can block unnecessary light paths, obstructing direct or reflected light without affecting the main light path, thus blocking a portion of the LED light, including direct or secondary reflected light, preventing bright spots from illuminating and achieving the function of light blocking.

[0028] In addition, in this embodiment, the end of the reflector 3 away from the PCB board 2 is formed with a second opening 32. The second opening 32 faces the light-emitting surface of the headlight, and the range of the second opening 32 is larger than that of the first opening 31, so as to better diffuse and conduct the parallel light.

[0029] Through the above design, this embodiment not only solves the problem of bright spots when the headlights are on, but also, through the design of the first opening 31, allows the LED light source 1 to be located within it, and a light-blocking structure 34 extends from the wall of the first opening 31 towards the center. Due to the presence of the first opening 31, it has a certain blocking and focusing effect on the LED light. Therefore, the size of the light-blocking structure 34 can be smaller. When multiple LED light sources 1 are emitting light, the problem of bright spots can be solved without increasing the number of light-blocking structures 34, or even with fewer light-blocking structures 34, thereby reducing component costs and quantity and saving materials. Based on solving the bright spot problem, the light-blocking structure 34 can be designed to be smaller, less prone to damage, applicable to a wider range of scenarios, blocking less light, and achieving higher light efficiency.

[0030] It is worth mentioning that in this embodiment, the light-blocking structure 34 and the reflector 3 are integrally injection molded. Therefore, the light-blocking structure 34 does not need to be installed and assembled with other components, and it is located inside the reflector 3, which provides better protection for the light-blocking structure 34, making it less prone to damage and reducing maintenance costs.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The above specific embodiments further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A light blocking structure for a vehicle light, characterized by: Includes a PCB board (2) and a reflector (3) disposed on one side of the PCB board (2); The reflector (3) has a first opening (31) formed at one end near the PCB board (2). The first opening (31) forms a receiving space. The surface of the PCB board (2) is provided with a plurality of LED light sources (1) located in the receiving space of the first opening (31). A light-blocking structure (34) extends from the first opening (31) of the reflector (3) toward the center, and the light-blocking structure (34) is located in the light-emitting direction of the LED light source (1).

2. The light blocking structure for a vehicle lamp according to claim 1, characterized by: The reflector (3) has a second opening (32) formed at the end away from the PCB board (2), and the second opening (32) faces the light-emitting surface of the vehicle lamp.

3. The light blocking structure for a vehicle lamp according to claim 2, characterized by: The range of the second opening (32) is larger than that of the first opening (31).

4. The light blocking structure of claim 1, wherein: The reflector (3) includes a circumferentially arranged reflective surface (33).

5. The light blocking structure for a vehicle lamp according to claim 4, characterized by: The reflecting surface (33) is a parabola, an ellipsoid, or a composite surface.

6. The light blocking structure for a vehicle lamp according to claim 4, characterized by: The light emitted by the LED light source (1) is located at the focal point of the reflective surface (33).

7. The light blocking structure of claim 4, wherein: The reflective surface (33) has a reflective pattern.

8. The light blocking structure of claim 1, wherein: The light-blocking structure (34) and the reflector (3) are integrally injection molded structures.

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