CN219014109U - Uniform light thick wall light guide structure for automobile illumination and car lamp - Google Patents

Abstract

The utility model discloses a uniform light thick wall light guide structure for automobile illumination and an automobile lamp, comprising: the light-emitting piece is arranged on the thick-wall piece in front of the light-emitting piece, and the cross section basic outline of the thick-wall piece is Z-shaped and comprises a first horizontal section, a second horizontal section positioned obliquely above the front of the first horizontal section and an inclined section connecting the first horizontal section and the second horizontal section; the rear side of the first horizontal section is a light incident surface, and a condenser is arranged at the light incident surface; the inclined section is formed by two first reflecting surfaces and a second reflecting surface which are inclined upwards towards the second horizontal section; the front side of the second horizontal section is a light-emitting surface, the light-emitting surface comprises a first light-emitting surface positioned at the lower part and a second light-emitting surface positioned at the upper part, and an opening with a V-shaped cross section is formed in the bottom of the second horizontal section. The thick-wall light guide structure provided by the utility model can ensure that the light-emitting area can be normally lightened under the condition that the right rear part of the light-emitting area is occupied, and the lighting is more uniform.

Description

Uniform light thick wall light guide structure for automobile illumination and car lamp

Technical Field

The utility model relates to the technical field of car lamps, in particular to a uniform light thick-wall light guide structure for car lighting and a car lamp.

Background

Along with the rapid development of automobile lamp technology, the requirements of whole automobile customers on the appearance and appearance of the automobile lamp are higher and higher, the requirements of diversification and miniaturization of the automobile lamp are urgent and urgent, and the LED has small luminous area, high light energy utilization rate and good design freedom degree and is widely applied to the automobile lamp. Along with the stricter requirements of lamp modeling on attractive appearance, the limitation of light distribution space is more and more obvious, under the normal condition, the direct-injection type thick-wall LED is arranged right behind a light-emitting area (as shown in figure 1), but due to the limitation of light distribution space, when other structures occupy right behind the light-emitting area, the LED cannot be directly arranged right behind the light-emitting area, on the basis of the light distribution space, the applicant proposes a thick-wall light guide structure as shown in figure 2, the whole outline of the thick-wall light guide structure is basically Z-shaped, the LED and the light-emitting area are arranged in a staggered mode, and the light-emitting surface and the direct-injection type condenser are connected through two surfaces which form a certain angle with the horizontal surface of the cross section, so that the area A and the area B are lighted.

However, the above structure can light the whole of the a region and the B region, but since the a region is direct light, the energy is significantly stronger than that of the B region, and the a region is brighter than the B region on the lighting lamp, that is, there is a problem that the lighting of the a region and the B region is uneven.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide a light-homogenizing thick wall light-guiding structure for automotive lighting, which solves the problem that the area a is brighter than the area B, that is, the lighting of the area a and the area B is uneven in the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a light-homogenizing thick-wall light guide structure for automotive lighting, comprising:

the luminous element is arranged on the surface of the luminous element,

the cross section basic outline of the thick-wall piece is Z-shaped and comprises a first horizontal section, a second horizontal section and an inclined section, wherein the second horizontal section is positioned obliquely above the front of the first horizontal section, and the inclined section is used for connecting the first horizontal section and the second horizontal section;

the rear side of the first horizontal section is a light incident surface, and a condenser is arranged at the light incident surface;

the inclined section is formed by two first reflecting surfaces and a second reflecting surface which are inclined upwards towards the second horizontal section;

the front side of the second horizontal section is a light-emitting surface, the light-emitting surface comprises a first light-emitting surface positioned at the lower part and a second light-emitting surface positioned at the upper part, an opening with a V-shaped cross section is formed in the bottom of the second horizontal section, one side wall of the opening is a first refraction surface, the other side wall of the opening is a second refraction surface, and the depth of the opening is larger than the width of the first light-emitting surface;

the light emitted by the light emitting piece enters the thick-wall piece after passing through the condenser, wherein the light passing through the first reflecting surface and the second reflecting surface can be emitted to the second light emitting surface, the light passing through the first refracting surface and the second refracting surface can be partially emitted to the first light emitting surface, and the light is partially diffused to the second light emitting surface.

Preferably, the second refraction surface comprises an A refraction surface and a B refraction surface which are connected with each other, an included angle is formed between the A refraction surface and the B refraction surface, and the included angle is between 135 degrees and 180 degrees.

Preferably, the included angle between the refractive surface a and the horizontal plane is larger than 20 degrees, and the included angle between the refractive surface B and the horizontal plane is larger than 20 degrees.

Preferably, the bottom of the B refractive surface extends downward to protrude from the second horizontal segment to form a boss.

Preferably, the cross-sectional width of the light-emitting surface is greater than the cross-sectional width of the light-entering surface.

Preferably, the acute included angles between the first reflecting surface and the second reflecting surface and the horizontal plane are 45 degrees.

Preferably, the width of the cross section of the first horizontal section is gradually increased, the included angle between the upper end surface of the cross section and the horizontal plane is 2-5 degrees, and the included angle between the lower end surface and the horizontal plane is 2-5 degrees.

Preferably, the outer side surfaces of the first reflecting surface and the second reflecting surface are both tooth-shaped surfaces.

Preferably, the outer side surfaces of the first light-emitting surface and the second light-emitting surface are corrugated surfaces.

The utility model also provides a car lamp, which comprises the uniform light thick-wall light guide structure for car lighting.

The utility model has the beneficial effects that: according to the uniform light thick-wall light guide structure for automobile illumination, the opening with the V-shaped cross section is formed in the bottom of the second horizontal section of the thick-wall part, the first refraction surface and the second refraction surface are respectively arranged on the two sides of the opening, so that light rays emitted by the light emitting part can be diffused to the second light emitting surface, namely the region B, from part of the light rays originally emitted to the first light emitting surface, namely the region A under the action of the first refraction surface and the second refraction surface, and the light rays of the region A are reduced, namely the energy of the region A for increasing the region B is weakened, the lighting brightness of the region AB is matched with each other, and the lighting is more uniform.

Drawings

Fig. 1 is a schematic diagram of a direct-lit thick-wall and LED arrangement in the background.

Fig. 2 is a schematic diagram of a thick-wall light guide structure optimized in the background art.

Fig. 3 is a schematic view of a light-homogenizing thick-wall light guide structure and LED arrangement for automotive lighting in the present utility model.

Fig. 4 is a schematic view showing a part of light propagation in the light-homogenizing thick-wall light guide structure for automobile illumination in the present utility model.

Fig. 5 is a schematic view of a light-homogenizing thick wall light guide structure for automobile illumination in the present utility model.

FIG. 6 is a schematic diagram of a light guide structure of a light equalizing thick wall for automotive illumination according to the second embodiment of the present utility model.

Reference numerals illustrate:

1. a light emitting member; 2. a thick-walled member; 21. a first horizontal segment; 22. a second horizontal segment; 221. an opening; 222. a first refractive surface; 223. a second refraction surface; 2231. a refractive face, 2232, B refractive face; 224. a boss; 23. an inclined section; 231. a first reflecting surface; 232. a second reflecting surface; 233. tooth-shaped surfaces; 24. a light incident surface; 25. a condenser; 26. a light-emitting surface; 261. a first light-emitting surface; 262. and a second light-emitting surface.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Example 1

Referring to fig. 2 to 6, a light-homogenizing and thick-wall light guide structure for automotive illumination includes:

alighting element 1, thelighting element 1 typically being an LED lamp;

a thick-wall member 2, wherein the cross-section basic outline of the thick-wall member 2 is Z-shaped, and comprises a firsthorizontal section 21, a secondhorizontal section 22 positioned obliquely above the front of the firsthorizontal section 21, and aninclined section 23 connecting the firsthorizontal section 21 and the secondhorizontal section 22, and theluminous member 1 is positioned right behind the firsthorizontal section 21;

the rear side of the firsthorizontal section 21 is alight incident surface 24, acondenser 25 is arranged at thelight incident surface 24, and thecondenser 25 is used for introducing light rays emitted by thelight emitting element 1, namely the LED lamp, into the thick-wall element 2;

theinclined section 23 is formed by two first reflectingsurfaces 231 and second reflectingsurfaces 232 which incline upwards towards the secondhorizontal section 22, the first reflectingsurfaces 231 and the second reflectingsurfaces 232 are parallel to each other, the first reflectingsurfaces 231 are positioned right below the second reflectingsurfaces 232, in this embodiment, the acute included angles between the first reflectingsurfaces 231 and the second reflectingsurfaces 232 and the horizontal plane are 45 degrees, and the width of the light emergent surface is enlarged by adjusting the inclined angles of the first reflectingsurfaces 231 and the second reflectingsurfaces 232, so that the emitted light can cover more areas;

the front side of the secondhorizontal segment 22 is a light-emittingsurface 26, the cross-sectional width of the light-emittingsurface 26 is greater than the cross-sectional width of the light-enteringsurface 24, the light-emittingsurface 26 includes a first light-emitting surface 261 (i.e., a region a in fig. 3 and 4) located at the lower portion and a second light-emitting surface 262 (i.e., a region B in fig. 3 and 4) located at the upper portion, anopening 221 with a V-shaped cross-section is formed at the bottom of the secondhorizontal segment 22, one side wall of theopening 221 is a firstrefractive surface 222, the other side wall is a secondrefractive surface 223, the depth of theopening 221 is greater than the width of the first light-emittingsurface 261, and the specific depth can be adaptively adjusted according to the width of the light-emittingsurface 26;

the light emitted by thelight emitting element 1 passes through thecondenser 25 and then enters the thick-wall element 2, wherein the light passing through the first reflectingsurface 231 and the second reflectingsurface 232 can be emitted to the secondlight emitting surface 262, and the light passing through the first refractingsurface 222 and the second refractingsurface 223 can be partially emitted to the firstlight emitting surface 261 and partially diffused to the secondlight emitting surface 262.

In the present embodiment, one end of thelight emitting element 1 is set to the rear, and one end of thelight emitting surface 26 is set to the front. In this embodiment, theopening 221 with a V-shaped cross section is formed at the bottom of the secondhorizontal section 22 of the thick-wall member 2, and the firstrefractive surface 222 and the secondrefractive surface 223 are respectively disposed on two sides of theopening 221, so that the light emitted by thelight emitting member 1 can diffuse part of the light originally emitted to the firstlight emitting surface 261, i.e. the a region, to the second light emitting surface, i.e. the B region under the action of the firstrefractive surface 222 and the secondrefractive surface 223, thereby reducing the light of the a region, i.e. weakening the energy of the a region and the B region, so that the lighting brightness of the AB region is matched with each other, and the lighting is more uniform.

With continued reference to fig. 3 and 4, the secondrefractive surface 223 includes an arefractive surface 2231 and a Brefractive surface 2232 that are connected to each other, and an included angle is formed between the arefractive surface 2231 and the Brefractive surface 2232, and the included angle is between 135 ° and 180 °; the included angle between the arefractive surface 2231 and the horizontal plane is greater than 20 °, the included angle between the Brefractive surface 2232 and the horizontal plane is greater than 20 °, and the specific angles are unified so as to be too early according to the width of the light-emitting surface, and meanwhile, it is ensured that enough light can diffuse into the second light-emittingsurface 262. Thefirst refraction surface 222 is inclined towards one end of the light-emitting surface, and the inclination angle ensures smooth mold-stripping.

With continued reference to fig. 3 and 4, the bottom of the Brefractive surface 2232 extends downward to protrude from the secondhorizontal segment 22 to form aboss 224, and theboss 224 is disposed to supplement the bottom of the first light-emittingsurface 261.

In this embodiment, the width of the cross section of the firsthorizontal section 21 is gradually increased, and the included angle between the upper end surface of the cross section and the horizontal plane is 2-5 °, and the included angle between the lower end surface and the horizontal plane is 2-5 °; all can be preferably 3 degrees, and the mold stripping is convenient due to the proper inclined arrangement.

As shown in fig. 5 and 6, the outer sides of the first reflectingsurface 231 and the second reflectingsurface 232 are both provided with tooth-shapedsurfaces 233; the outer side surfaces of the first light-emittingsurface 261 and the second light-emittingsurface 262 are corrugated surfaces; the arrangement of the corrugated surface can play a role in decoration and can improve the light homogenizing effect again.

This embodiment still provides a car light, including foretell car illumination with even light thick wall light guide structure, the car light that this embodiment provided can be applicable to the restricted condition of car light mounted position, and light utilization is high simultaneously, illumination is more even, has promoted the compactness of overall structure in the car light, and it is more even to light.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. Even light thick wall light guide structure for automotive lighting, characterized by comprising:

a luminous element (1),

a thick-wall member (2), wherein the cross-section basic outline of the thick-wall member (2) is Z-shaped, and comprises a first horizontal section (21), a second horizontal section (22) positioned obliquely above the front of the first horizontal section (21), and an inclined section (23) connecting the first horizontal section (21) and the second horizontal section (22), and the luminous member (1) is positioned right behind the first horizontal section (21);

the rear side of the first horizontal section (21) is a light incident surface (24), and a condenser (25) is arranged at the light incident surface (24);

the inclined section (23) is formed by two first reflecting surfaces (231) and second reflecting surfaces (232) which are inclined upwards towards the second horizontal section (22);

the front side of the second horizontal section (22) is a light-emitting surface (26), the light-emitting surface (26) comprises a first light-emitting surface (261) positioned at the lower part and a second light-emitting surface (262) positioned at the upper part, an opening (221) with a V-shaped cross section is formed in the bottom of the second horizontal section (22), one side wall of the opening (221) is a first refraction surface (222), the other side wall of the opening is a second refraction surface (223), and the depth of the opening (221) is larger than the width of the first light-emitting surface (261);

light emitted by the light emitting piece (1) enters the thick-wall piece (2) after passing through the condenser (25), wherein the light passing through the first reflecting surface (231) and the second reflecting surface (232) can be emitted to the second light emitting surface (262), and the light passing through the first refracting surface (222) and the second refracting surface (223) can be emitted to the first light emitting surface (261) partially and is diffused to the second light emitting surface (262) partially.

2. The light-homogenizing thick-wall light guide structure for automotive lighting according to claim 1, wherein the second refractive surface (223) comprises an a refractive surface (2231) and a B refractive surface (2232) which are connected with each other, an included angle is formed between the a refractive surface (2231) and the B refractive surface (2232), and the included angle is between 135 ° and 180 °.

3. The light-homogenizing and thick-wall light guide structure for automotive lighting according to claim 2, wherein the angle between the a refractive surface (2231) and the horizontal plane is larger than 20 ° and the angle between the B refractive surface (2232) and the horizontal plane is larger than 20 °.

4. The light-homogenizing and thick-wall light guide structure for automotive lighting of claim 2, wherein the bottom of the B refractive surface (2232) extends downward to protrude from the second horizontal section (22) to form a boss (224).

5. The light-homogenizing and thick-wall light guide structure for automotive lighting of claim 1, wherein the cross-sectional width of the light-emitting surface is greater than the cross-sectional width of the light-entering surface.

6. The light-homogenizing and thick-wall light guide structure for automotive lighting according to claim 1, wherein the acute included angles between the first reflecting surface (231) and the second reflecting surface (232) and the horizontal plane are both 45 °.

7. The light-homogenizing and thick-wall light guide structure for automobile illumination according to claim 1, wherein the cross-section width of the first horizontal section (21) gradually increases, and the angle between the upper end surface of the cross section and the horizontal plane is 2-5 °, and the angle between the lower end surface and the horizontal plane is 2-5 °.

8. The light-homogenizing and thick-wall light guide structure for automobile illumination according to claim 1, wherein the outer side surfaces of the first reflecting surface (231) and the second reflecting surface (232) are both provided as tooth surfaces (233).

9. The light-homogenizing and thick-wall light guide structure for automobile illumination according to claim 1, wherein the outer side surfaces of the first light-emitting surface (261) and the second light-emitting surface (262) are both corrugated surfaces.

10. A vehicle lamp comprising the dodging thick-wall light guide structure for automotive lighting as claimed in any one of claims 1 to 9.

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