CN211203911U

CN211203911U - Optical structure of dipped headlight

Info

Publication number: CN211203911U
Application number: CN201921699293.1U
Authority: CN
Inventors: 王建敏
Original assignee: CHANGCHUN ZHONGRUI AUTO PARTS CO LTD
Current assignee: CHANGCHUN ZHONGRUI AUTO PARTS CO LTD
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-08-07
Anticipated expiration: 2029-10-12

Abstract

The utility model relates to an optical structure of passing lamp, structure include radiator, circuit board, L ED light source, total reflection lens, outer lens, circuit board fixed connection is to the top of radiator, L ED light source fixed connection is in the top of circuit board, total reflection lens is the structure that the curved surface of a certain amount constitutes, and is located the top of circuit board, outer lens are two-sided outside convex lens, and are located one side on total reflection lens upper portion, the utility model discloses a new total reflection lens adds lens and total reflection income light mouth structure makes light jet out after the total reflection takes place in lens inside, makes the light-emitting efficiency of lens improve greatly to make the front height of lens do littleer, make the car light shape more pleasing to the eye, more nimble.

Description

Optical structure of dipped headlight

Technical Field

The utility model relates to car passing lamp field, especially an optical structure of passing lamp.

Background

At present, the modeling of the automobile headlight is more and more novel and beautiful, and simultaneously, the appearance requirement of the far and near light lenses is developed from the original round and long round shapes to slender shapes, so the height of the front face of the lenses is required to be less than 30mm, most of the traditional reflector type lens groups are structures combining reflectors, light shielding plates and lenses, but the number of structural parts is large, the number of processing procedures of the parts is large, accumulated errors are easy to generate in the assembly of a plurality of parts, the reflectors also need to be subjected to paint spraying and aluminizing treatment, and because of the existence of the light shielding plates, part of light is lost without participating in light distribution, the utilization rate of the light is reduced, so the limitation of the optical structure and the luminous efficiency is realized, the height of the front face of the lenses can be 45mm at the minimum.

Therefore, there is a need for a structure that is applicable to various low beam lamp modules, and that can make the overall size of the structure smaller and more compact, and that greatly improves the utilization of light, and that is simple to install, and that is aesthetically practical.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an optical structure of passing lamp to solve the not enough that exists among the prior art.

In order to achieve the above purpose, the following technical scheme is provided:

the utility model provides an optical structure of passing lamp, the structure includes radiator, circuit board, L ED light source, total reflection lens, outer lens, circuit board fixed connection is to the top of radiator, L ED light source fixed connection is in the top of circuit board, total reflection lens formula polyhedral structure as an organic whole, and be located the top of circuit board, outer lens are two-sided outside convex lens, and are located one side on total reflection lens upper portion.

Preferably, the bottom of the total reflection lens is provided with a first recess, and the L ED light source is positioned in the first recess.

Preferably, the total reflection lens is composed of a first total reflection surface, a second total reflection surface, a light emitting surface, a first shading surface, a second shading surface, a third total reflection surface and an incidence surface, the light emitting surface is an ellipsoidal curved surface, the first total reflection surface is an arc-shaped curved surface, the second total reflection surface and the third total reflection surface form an included angle with a certain angle, and the incidence surface is a concave inner surface.

Preferably, the first light shielding surface and the second light shielding surface form an inward second recess, and a focal point formed by the light inside the total reflection lens is located above the second recess, and the focal point is a focal point of the outer lens.

Preferably, the whole structure composed of the total reflection lens, the L ED light source, the circuit board and the heat sink is inclined at a certain angle along the counterclockwise direction.

The utility model has the advantages that:

1. the utility model discloses a change the structure, whole lens are total reflection lens, compare with in the past and saved parts such as speculum and light screen, practiced thrift manufacturing cost.

2. The utility model discloses make light get into by the incident plane of total reflection lens, jet out after the total reflection takes place in total reflection lens inside, there is not the loss basically, has improved the utilization ratio of light.

3. The utility model provides when high luminous efficiency, its structure is more compact, has reduced the unnecessary part to what make the positive height of lens can be done is littleer, makes the car light shape more pleasing to the eye, novel, nimble.

Drawings

Fig. 1 is a schematic structural view of the present invention;

the reference numbers shown in the figure are 1-radiator, 2-circuit board, 3-L ED light source, 4-total reflection lens, 5-outer lens, 401-concave one, 402-total reflection surface one, 403-total reflection surface two, 404-light-emitting surface, 405-shading surface one, 406-shading surface two, 407-shading surface three, 408-total reflection surface three and 409-concave two.

Detailed Description

The following describes the present design in detail with reference to the accompanying drawings.

As shown in fig. 1, an optical structure of a low beam light comprises a heat sink 1, a circuit board 2, L ED light sources 3, total reflection lenses 4, and an outer lens 5, wherein the circuit board 2 is fixedly connected to the top of the heat sink 1, the L ED light sources 3 are fixedly connected to the top of the circuit board 2, the total reflection lenses 4 are in an integrated polyhedral structure and are located above the circuit board 2, and the outer lens 5 is a lens with two sides protruding outwards and is located on one side of the upper part of the total reflection lenses 4.

Wherein, the bottom of the total reflection lens 4 is provided with a first recess 401, and the L ED light source 3 is positioned in the first recess 401.

The total reflection lens 4 is composed of a first total reflection surface 402, a second total reflection surface 403, a light emitting surface 404, a first light shielding surface 405, a second light shielding surface 406, a third light shielding surface 407, a third total reflection surface 408 and an incident surface, wherein the light emitting surface 404 is an ellipsoidal curved surface, the first total reflection surface 402 is an arc curved surface, the second total reflection surface 403 and the third total reflection surface 408 form an included angle of a certain angle, and the incident surface is an inner surface of the first concave surface 401.

The first light-shielding surface 405 and the second light-shielding surface 406 form a second inward recess 409, and a focal point formed by the light inside the total reflection lens 4 is located above the second recess 409, and the focal point is a focal point of the outer lens 5.

The whole structure composed of the total reflection lens 4, the L ED light source 3, the circuit board 2 and the heat sink 1 inclines at a certain angle along the counterclockwise direction.

In order to ensure the consistency of the product, the total reflection lens 4 is formed in one step by adopting an injection molding process.

Examples

As shown in fig. 1, a circuit board 2 is fixedly connected to the top of a heat sink 1, an L ED light source 3 is fixedly connected to the top of the circuit board 2, a total reflection lens 4 is placed above the circuit board 2, and a L ED light source is located in a first recess 401 of the total reflection lens 4, an outer lens 5 is placed on one side of the upper portion of the total reflection lens 4, light emitted by the L ED light source 3 enters through an incident surface of the total reflection lens 4, is totally reflected on inner surfaces of a first total reflection surface 402, a second total reflection surface 403 and a third total reflection surface 408 of the total reflection lens 4, and focuses on a point in the total reflection lens 4, the focus is a focus of the outer lens 5, and a second recess 409 formed by a first light shielding surface 405 and a second light shielding surface 406 forms a projection of a low beam shape at the focus inside the total reflection lens 4, and then emits, and the light enters the outer lens 5 after being refracted, and then parallel.

Claims

1. The utility model provides an optical structure of passing light, its characterized in that, the structure includes radiator, circuit board, L ED light source, total reflection lens, outer lens, circuit board fixed connection is to the top of radiator, L ED light source fixed connection is in the top of circuit board, total reflection lens formula polyhedral structure as an organic whole, and be located the top of circuit board, outer lens are the outside convex lens in two-sided, and are located one side on total reflection lens upper portion.

2. A low beam optical structure as claimed in claim 1, wherein the bottom of said total reflection lens is provided with a recess, and said L ED light source is located in the recess.

3. A dipped headlight optical structure according to claim 1 or 2, wherein the total reflection lens comprises a first total reflection surface, a second total reflection surface, a light exit surface, a first light shading surface, a second light shading surface, a third total reflection surface and an incidence surface, the light exit surface is an ellipsoidal curved surface, the first total reflection surface is an arc curved surface, the second total reflection surface and the third total reflection surface form an included angle, and the incidence surface is an inner surface of a first concave.

4. A low beam optical structure as claimed in claim 3, wherein said first light-shielding surface and said second light-shielding surface form an inward recess two, and the focus of the light formed inside the total reflection lens is located above the recess two, and the focus is the focus of the outer lens.

5. A dipped headlight optical structure as claimed in claim 1, wherein the whole structure of said total reflection lens, L ED light source, circuit board and heat sink is tilted in a counterclockwise direction by a certain angle.