Structure for correcting uneven light emitting of LED, LED lamp and automobile tail lamp
Through the design of a symmetrical wave concentrator, the refraction deviation of light rays is used to solve the problem of uneven LED light emission, and the uniformity of the light effect is achieved, and the dark area and cost increase are avoided.
Patent Information
- Application Number
- CN202420497778.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The existing car light structure cannot effectively correct the problem of uneven LED light emission, resulting in uneven lighting effects, dark areas, and increasing the number of LED and concentrator units will lead to an increase in costs.
A symmetrical wave-shaped condenser is adopted, through the concave and convex arc design of its end and middle areas, the light rays are refracted and deviated when passing through the condenser, and redistributed, so that the emitted light exits at a certain divergence angle, thereby achieving uniformity of the light effect.
The uniformity of LED light emission is achieved, the formation of dark areas is avoided, and structural space is saved, and the cost increase caused by increasing the number of LED and concentrator units is avoided.
Smart Images
Figure CN222634391U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicle lamp lighting equipment, and more specifically, relates to a structure for correcting uneven light emission of LEDs, an LED lamp and a vehicle taillight. Background Art
[0002] With the development of science and technology and the improvement of living standards, passenger cars have gradually become the main means of transportation for people. In the field of vehicle lighting design and manufacturing, LED light sources have gradually become the main light source for vehicle lighting due to their advantages such as fast response, low energy consumption, and stable chromaticity. However, the light emitted by LED light source chips is not equal in intensity at any angle, but follows the Lambertian distribution (such as Figure 1 and Figure 2 ), the central light intensity is the largest, and as the emission angle increases, the light intensity gradually decreases, resulting in uneven light emission and a sense of grain. In order to increase the recognition of the lighting form of the headlights and the beautiful lighting effect, more and more headlights are now required to have uniform lighting characteristics without a sense of grain, that is, a lighting effect with continuous visual perception and no light or dark characteristics.
[0003] To achieve the above lighting effects, the existing headlight structure has the following two solutions:
[0004] 1. Use LED and traditional concentrator for direct projection, and then add a 45-degree reflective surface for side projection to achieve a uniform lighting effect. However, since this solution greatly increases the structural space of the optical system, it also causes a significant increase in mold processing costs and raw material costs.
[0005] Second, use LED and traditional concentrator direct projection, and increase the number of LED and concentrator units at the same time to achieve a uniform lighting effect. However, since the number of LED and concentrator units used in this solution needs to be increased by 1.5-2 times, the LED cost, mold cost, and raw material cost will increase significantly.
[0006] Defects of existing design solutions: Conventional concentrator design simulates the LED as a point light source, and then emits the spherical wave according to the point light source. The middle part of the concentrator is directly opposite the middle of the light source (within a divergence angle of about 50° to 80°). This part of the concentrator structure can only collimate the light from the light source. However, since the LED is a Lambertian luminous body, its light intensity is approximately cosine distributed, and the conventional structure can only collimate but cannot adjust its distribution. This results in the light passing through the concentrator requiring a sufficiently long propagation distance to disperse (especially for direct projection) so that the light output effect can be relatively uniform. Utility Model Content
[0007] The purpose of the utility model is to address the deficiencies in the prior art and provide a structure, LED lamp and automobile taillight for correcting uneven LED light emission. The structure can achieve a uniform lighting effect, and the emitted light is more uniform, which can avoid the formation of dark areas to the greatest extent.
[0008] In order to achieve the above object, the utility model provides a structure for correcting uneven light emission of LEDs, comprising:
[0009] The concentrator is symmetrically wavy in shape, the end area of the concentrator is an arc shape concave toward the light source, the middle area of the concentrator is an arc shape convex toward the light source, and the end of the concentrator is smoothly connected to the middle of the concentrator.
[0010] Optionally, the end region of the concentrator is the same length as the middle region of the concentrator.
[0011] Optionally, the concave curvature of the end region of the concentrator is the same as the convex curvature of the middle region of the concentrator.
[0012] The utility model also provides an LED lamp, comprising the above-mentioned structure for correcting uneven LED light emission.
[0013] Optionally, it also includes:
[0014] A lampshade, the inner side of which is connected to the outer periphery of the condenser;
[0015] An LED light source is arranged at one end of the lampshade, and the LED light source faces the condenser.
[0016] The utility model also provides a car taillight, comprising the above-mentioned LED lamp.
[0017] Optionally, a vehicle lamp housing is further included, and a plurality of the LED lamps are arranged along the length direction at one end of the vehicle lamp housing.
[0018] Optionally, the LED lights are evenly distributed in the vehicle light housing.
[0019] Optionally, a lampshade is provided at the other end of the vehicle lamp housing, and the lampshade forms an angle of 60°-80° with the horizontal direction.
[0020] Optionally, one end of the vehicle light housing is longer than the other end.
[0021] The utility model provides a structure, an LED lamp and an automobile taillight for correcting uneven LED light emission, and the beneficial effects are as follows: the structure optimizes the collimated part of the condenser, starting from the center of the light source, utilizing the refraction deviation of light passing through the surface of a medium, and redistributing the light reaching the surface of the condenser by changing the angle, so that the emergent light passing through the condenser is emitted at a certain divergent angle, rather than collimated. In this way, in a thick wall of the same depth, since the scattering angle is increased by the scheme, the lighting effect after scattering is more uniform, which not only saves structural space, but also does not need to rely on increasing LEDs, thereby avoiding increasing costs.
[0022] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.
[0024] Figure 1 A schematic diagram of light rays following Lambertian distribution is shown.
[0025] Figure 2 A schematic diagram showing brightness following Lambertian distribution is shown.
[0026] Figure 3 A schematic diagram showing the changes in light refraction when a light source passes through a traditional concentrator.
[0027] Figure 4 A schematic diagram showing the light refraction change of a structure for correcting uneven LED light emission according to an embodiment of the utility model is shown.
[0028] Figure 5 A schematic structural diagram of a vehicle taillight according to an embodiment of the utility model is shown.
[0029] Figure 6 A schematic diagram of an LED lamp according to an embodiment of the utility model is shown.
[0030] Figure 7 A side view of a vehicle taillight according to an embodiment of the utility model is shown.
[0031] Figures 4 to 7 Description of reference numerals:
[0032] 1. Concentrator; 2. End area of the concentrator; 3. Middle area of the concentrator; 4. Headlight housing; 5. LED lamp; 6. Lampshade. DETAILED DESCRIPTION
[0033] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0034] The utility model provides a structure for correcting uneven light emission of LEDs, comprising:
[0035] The concentrator is symmetrically wavy, the end area of the concentrator is an arc-shaped concave toward the light source, the middle area of the concentrator is an arc-shaped convex toward the light source, and the end of the concentrator is smoothly connected to the middle of the concentrator.
[0036] Specifically, the concentrator in this structure adopts a wave shape, so that the light passing through the middle area of the concentrator can be refracted toward the periphery, and the light passing through the end area of the concentrator has the same spacing after refraction. In this way, the light source is set on the axis position of the concentrator, and the light of the light source can form an irradiation area with uniform intensity distribution through the concentrator.
[0037] Optionally, the end regions of the concentrator are the same length as the middle region of the concentrator.
[0038] Optionally, the concave curvature of the end region of the concentrator is the same as the convex curvature of the middle region of the concentrator.
[0039] Specifically, the lengths and convex-concave deformation angles of the middle area and the end areas at both ends of the concentrator are set to be the same, so that no parallel and unevenly distributed light rays appear when the light source passes through the concentrator. The light source can refract the light according to the convex or concave surface when passing through the concentrator. The light rays formed by the refraction are not parallel to each other, and radiate around along the axis of the concentrator, and the spacing between the radiated light rays is the same, so that an illumination area with uniform intensity distribution can be formed.
[0040] The utility model also provides an LED lamp, comprising the above-mentioned structure for correcting uneven LED light emission.
[0041] Optionally, it also includes:
[0042] A lampshade, the inner side of which is connected to the outer periphery of the condenser;
[0043] The LED light source is arranged at one end of the lampshade, and faces the condenser.
[0044] Specifically, the concentrator is installed in an LED lamp, and the light emitted by the LED light source can form an irradiation area with uniform illumination, and in combination with the LED light source, the irradiation area is brighter.
[0045] The utility model also provides a car taillight, comprising the above-mentioned LED lamp.
[0046] Optionally, a vehicle lamp housing is further included, and a plurality of LED lamps are arranged at one end of the vehicle lamp housing along the length direction.
[0047] Optionally, the LED lights are evenly distributed in the lamp housing.
[0048] Optionally, a lampshade is provided at the other end of the vehicle lamp housing, and the lampshade forms an angle of 60°-80° with the horizontal direction.
[0049] Optionally, one end of the vehicle lamp housing is longer than the other end.
[0050] Specifically, the car taillights are composed of multiple LED lights arranged in a linear shape, the central axis of the concentrator coincides with the center line of the LED light, the illumination area formed by the multiple LED lights is on the obliquely arranged lampshade, and one side of the light source is larger than the area of the lampshade, so that the lampshade can be easily completely illuminated and filled, and no dark area will be formed on the lampshade, making the car lights more beautiful.
[0051] Example
[0052] like Figures 4 to 7 As shown, the utility model provides a structure for correcting uneven light emission of LEDs, comprising:
[0053] The concentrator 1 is symmetrically wavy in shape. The end region 2 of the concentrator is an arc shape concave toward the light source, and the middle region 3 of the concentrator is an arc shape convex toward the light source. The end of the concentrator 1 is smoothly connected to the middle of the concentrator 1.
[0054] In this embodiment, the end region 2 of the concentrator is the same length as the middle region 3 of the concentrator.
[0055] In this embodiment, the concave curvature of the end region 2 of the concentrator is the same as the convex curvature of the middle region 3 of the concentrator.
[0056] The utility model also provides an LED lamp, comprising the above-mentioned structure for correcting uneven LED light emission.
[0057] In this embodiment, it also includes:
[0058] A lampshade, the inner side of which is connected to the outer periphery of the condenser;
[0059] The LED light source is arranged at one end of the lampshade, and faces the condenser.
[0060] The utility model also provides a car taillight, comprising the above-mentioned LED lamp.
[0061] In this embodiment, a vehicle lamp housing 4 is further included, and a plurality of LED lamps 5 are arranged along the length direction at one end of the vehicle lamp housing 4 .
[0062] In this embodiment, the LED lights 5 are evenly distributed in the vehicle light housing 4 .
[0063] In this embodiment, a lampshade 6 is disposed at the other end of the vehicle lamp housing 4 , and the lampshade 6 forms an angle of 60°-80° with the horizontal direction.
[0064] In this embodiment, one end of the vehicle lamp housing 4 is longer than the other end.
[0065] In summary, since the end areas 2 of the two concentrators and the middle area 3 of the concentrator are arcs with the same concave and convex angles, the light source can form light rays with different angles when passing through the concentrator 1, and the light rays are symmetrically deformed and refracted outward along the axis of the concentrator 1 to form rays with the same spacing. When three LED lamps with the concentrator 1 are arranged in a vertical direction and installed in the lampshade 6, the illumination area formed by the multiple LED lamps forms a uniform illumination effect on the lampshade 6, and no dark area is formed.
[0066] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims
1. A structure for correcting uneven LED light emission, characterized in that: include: The concentrator is symmetrically wavy in shape, the end area of the concentrator is an arc shape concave toward the light source, the middle area of the concentrator is an arc shape convex toward the light source, and the end of the concentrator is smoothly connected to the middle of the concentrator.
2. The structure for correcting uneven LED light emission according to claim 1, characterized in that: The end region of the concentrator has the same length as the middle region of the concentrator.
3. The structure for correcting uneven LED light emission according to claim 1, characterized in that: The concave curvature of the end region of the concentrator is the same as the convex curvature of the middle region of the concentrator.
4. An LED lamp, characterized in that: It comprises a structure for correcting uneven light emission of an LED according to any one of claims 1 to 3.
5. The LED lamp according to claim 4, characterized in that: Also includes: A lampshade, the inner side of which is connected to the outer periphery of the condenser; An LED light source is arranged at one end of the lampshade, and the LED light source faces the condenser.
6. A car taillight, characterized in that: Comprising the LED lamp according to any one of claims 4-5.
7. The automobile taillight according to claim 6, characterized in that: It also includes a lamp housing, one end of which is provided with a plurality of LED lamps along the length direction.
8. The automobile taillight according to claim 7, characterized in that: The LED lights are evenly distributed in the vehicle light housing.
9. The automobile taillight according to claim 8, characterized in that: A lampshade is arranged at the other end of the vehicle lamp housing, and the lampshade forms an angle of 60°-80° with the horizontal direction.
10. The automobile taillight according to claim 8, characterized in that: One end of the vehicle light housing is longer than the other end.