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CN-224229783-U - Car light guide structure

CN224229783UCN 224229783 UCN224229783 UCN 224229783UCN-224229783-U

Abstract

The utility model discloses a car light guide structure which comprises a PCB, a light guide body and a support, wherein at least one LED light source is arranged on the PCB, the light guide body is arranged on the support, a light collector which faces the LED light source is arranged at the light inlet end of the light guide body, a light distribution inclined plane is arranged at one end, far away from the light collector, of the light guide body in the collimation direction, the tail end of the light guide body extends to the reflection direction of the light distribution inclined plane, light guide teeth are formed on the tail end face of the light guide body, light emitted by the LED light source can be collimated by the light collector, enter the light guide body for conduction, and then is transmitted to the light guide teeth at the tail end after being totally reflected by the light distribution inclined plane to lighten the whole. The LED light guide has the advantages of smaller size, convenience in installation, high optical utilization rate and more uniform lighting effect at corners, and a light guide can show the L-shaped turning effect by a small number of LEDs.

Inventors

  • SHEN YIFAN

Assignees

  • 常州星宇车灯股份有限公司

Dates

Publication Date
20260512
Application Date
20250522

Claims (8)

  1. 1. The car light guide structure is characterized by comprising a PCB (1), a light guide body (2) and a bracket (3), wherein at least one LED light source (1-1) is arranged on the PCB (1), and the light guide body (2) is arranged on the bracket (3); The light guide device comprises a light guide body (2), a light distribution inclined plane (2-2) and a light guide tooth (2-3), wherein the light inlet end of the light guide body (2) is provided with a light condenser (2-1) which is opposite to an LED light source (1-1), one end, far away from the light condenser (2-1), of the light guide body (2) and positioned in the collimation direction is provided with the light distribution inclined plane (2-2), the tail end of the light guide body (2) extends to the reflection direction of the light distribution inclined plane (2-2) to be formed, and the end face of the light guide body (2) is provided with the light guide tooth (2-3); Light emitted by the LED light source (1-1) can be collimated by the condenser (2-1) and enter the light guide body (2) for conduction, and the light is transmitted to the light guide teeth (2-3) at the tail end after being totally reflected by the light distribution inclined plane (2-2) so as to lighten the whole.
  2. 2. A light guide structure for a vehicle lamp according to claim 1, wherein the light guide body (2) has an L-shaped configuration.
  3. 3. A light guide structure for a vehicle lamp according to claim 1, wherein the condenser (2-1) has a compound curved surface or a parabolic structure.
  4. 4. A light guide structure for a vehicle lamp according to claim 1, wherein the light distribution inclined plane (2-2) forms an angle of 30 DEG to 60 DEG with the alignment direction of the condenser (2-1).
  5. 5. The light guide structure of a car lamp according to claim 1, wherein the light distribution inclined plane (2-2) is provided with a light distribution pattern.
  6. 6. The light guide structure of a vehicle lamp according to claim 5, wherein the light distribution pattern is a groove or a convex structure.
  7. 7. The light guide structure of claim 6, wherein the geometric unit of the light distribution pattern is diamond-shaped, trapezoid-shaped or zigzag-shaped.
  8. 8. The light guide structure of a vehicle lamp according to claim 7, wherein the geometric unit of the light distribution pattern has a size of 0.1-1mm.

Description

Car light guide structure Technical Field The utility model relates to the technical field of automobile lamps, in particular to a light guide structure of an automobile lamp. Background The light guide structure of the traditional automobile lamp adopts a plane direct light-in scheme, the light efficiency utilization rate is low, part of light is not effectively guided to the target tooth surface, and the uniformity of light distribution is poor. The light-condensing structure is adopted to enter light, so that light condensation can be effectively ensured, and the light efficiency utilization rate is properly improved, but the shape of the existing car lamp is different, and the car lamp gradually develops towards the directions of miniaturization, flattening and the like, which is a difficult problem for the traditional car lamp light guide structure. At present, the conventional light guide structure is greatly affected by the size, the length and the like, and the light illumination brightness is reduced along with the increase of the length, especially in the tail end area of the light guide. Therefore, a section of optical structure is prolonged at the tail end or the number of LEDs is increased to improve the overall lighting uniformity effect, but the energy consumption, the size and the cost are increased, the installation difficulty is higher, the head of the light guide is easy to generate local bright spots or dark areas, and part of the light guide structure is transited in the arc designed at the light guide section, so that the size is reduced, the installation is convenient, the problem that dark areas still occur at the light guide turning is solved, and the overall lighting uniformity effect is not ideal. Disclosure of utility model The technical problem to be solved by the utility model is to overcome the defects of the prior art, and provide the car light guide structure which is small in size and convenient to install, and the light guide can take on the L-shaped turning effect by a small number of LEDs, so that the optical utilization rate is high, and the lighting effect at the corners is more uniform. In order to solve the technical problems, the technical scheme of the utility model is as follows: the light guide structure of the car lamp comprises a PCB, a light guide body and a bracket, wherein at least one LED light source is arranged on the PCB, and the light guide body is arranged on the bracket; The light guide body is provided with a light collector which is opposite to the LED light source at the light inlet end, a light distribution inclined plane is formed at one end of the light guide body, which is far away from the light collector and is positioned in the collimation direction, the tail end of the light guide body extends to the reflection direction of the light distribution inclined plane for forming, and a light guide tooth is formed on the tail end face of the light guide body; Light emitted by the LED light source can be collimated by the condenser, enter the light guide body and are conducted, and after being totally reflected by the light distribution inclined plane, the light is transmitted to the light guide teeth at the tail end to lighten the whole. Further, the light guide body is in an L-shaped configuration. Further, the condenser is of a composite curved surface or a parabolic structure. Further, the included angle between the light distribution inclined plane and the collimation direction of the condenser is 30-60 degrees. Further, the light distribution inclined plane is provided with a light distribution pattern. Further, the light distribution pattern is of a groove or protruding structure. Further, the geometric units of the light distribution patterns are diamond-shaped, trapezoid-shaped or zigzag-shaped. Further, the size of the geometrical unit of the light distribution pattern is 0.1-1mm. By adopting the technical scheme, the utility model has the following beneficial effects: 1. According to the utility model, through the light guide structure combining the condenser and the light distribution inclined plane, light rays emitted by the LED light source are collimated by the condenser, enter the light guide body and are transmitted to the light guide teeth at the tail end after being totally reflected by the light distribution inclined plane so as to lighten the whole, the utilization rate is further improved after being secondarily regulated and controlled by the light distribution patterns, and the whole light guide can be lightened by a small number of LEDs, so that the light guide structure has the advantages of high light efficiency utilization rate, small volume, simple structure and low cost. 2. The utility model is different from the existing light guide structure, the light distribution inclined plane is used as the corner of the light guide, the included angle between the light distribution inclined plane and the collimation direction of