Light guide plate, lighting device and vehicle lamp

A lighting device, light guide plate technology, applied in lighting devices, light guides, headlights, etc., can solve the problems of high requirements for heat dissipation, poor uniformity of light output, serious heat generation, etc., and achieves low requirements for heat dissipation and fewer parts. , the effect of low cost

Pending Publication Date: 2022-04-12
JIAXING HELLA LIGHTING CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] In the prior art, in order to achieve uniform light output on one surface, usually a plurality of circular light guides are spliced ​​together as a surface light source, or many LEDs are evenly distributed on the PCB to form a surface light source. When the light guides are spliced ​​together, there will be dark areas in the splicing area, and the uniformity of the light output is poor; the cost of the solution of evenly distributing many LEDs on the PCB is relatively high, the heat generation is relatively serious, and the requirements for heat dissipation are high.

Method used

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  • Light guide plate, lighting device and vehicle lamp
  • Light guide plate, lighting device and vehicle lamp
  • Light guide plate, lighting device and vehicle lamp

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Embodiment Construction

[0047] The advantages of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0048] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0049] The terminology used in the present disclosure is for the purpose of describing particular embodiments only, and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular...

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Abstract

The invention provides a light guide plate, a lighting device and a vehicle lamp. The light guide plate comprises a lower surface, an upper surface and at least one side face located between the lower surface and the upper surface. The lower surface is provided with a first optical structure, and the first optical structure is used for uniformly reflecting light entering the light guide plate from at least one side surface to the upper surface; the upper surface is provided with a second optical structure, and the second optical structure is used for enabling light rays from the first optical structure to be evenly scattered to the outside of the light guide plate. By the adoption of the technical scheme, light entering the light guide plate from the side face can be evenly emitted outwards from the upper surface of the light guide plate, and even face light emitting can be achieved only through a small number of LED light sources.

Description

technical field [0001] The invention relates to the technical field of lighting devices, in particular to a light guide plate, a lighting device and a vehicle lamp. Background technique [0002] At present, the shapes of car lights are becoming more and more complex, and the requirements for uniformity are getting higher and higher. [0003] In the prior art, in order to achieve uniform light output on one surface, usually a plurality of circular light guides are spliced ​​together as a surface light source, or many LEDs are evenly distributed on the PCB to form a surface light source. When the light guides are spliced ​​together, there will be dark areas at the splicing area, and the uniformity of the light output is poor; the cost of the solution of evenly distributing many LEDs on the PCB is relatively high, the heat generation is relatively serious, and the requirements for heat dissipation are high. Contents of the invention [0004] In order to overcome the above-me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00F21S41/141F21S41/24F21S43/14F21S43/239F21W107/10F21Y115/10
Inventor 范供齐殷姿葛诗雨李战国
Owner JIAXING HELLA LIGHTING CO LTD
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