CN114562702A - Light guide column structure - Google Patents

Abstract

The application provides a light guide column structure, which is arranged on an optical lighting device of a mobile carrier, wherein the light guide column structure defines a light inlet surface and a light outlet surface, the light outlet surface is provided with a middle part and two side parts which are positioned at two sides far away from the middle part, the side parts are provided with a plurality of tooth-shaped convex columns to form a light guide area, and the extension directions of the tooth-shaped convex columns are intersected with a light outlet direction. When the light source module generates the irradiation region through the light guide column structure, the light guide region can extend the width of two sides of the irradiation region, so that the light shape can be uniformly amplified. The present application further provides a car light structure, which is provided with the above-mentioned light guide pillar structure and a convex lens in the light emitting direction of the light source module.

Description

Light guide column structure

Technical Field

The application relates to a leaded light post structure of headlight for adjust the light type profile of passing light and the local luminance of light type.

Background

The LED car lamp module can adjust the light profile and the brightness distribution of the car lamp through basic components such as a light guide column and a lens, so as to meet the requirements of regulations or improve glare generated by direct light.

Disclosure of Invention

The present application provides a light guide pillar structure installed in an optical lighting device of a mobile carrier, the light guide pillar structure defines a light incident surface and a light emitting surface, the light emitting surface has a middle portion and two side portions located at two sides of the middle portion, the side portions have a plurality of tooth-shaped protruding pillars to form a light guide region, and an extending direction of the tooth-shaped protruding pillars intersects with a light emitting direction. When the light source module generates an irradiation area through the light guide column structure, the light guide area can extend the width of two sides of the irradiation area, so that the light shape can be uniformly widened.

Furthermore, the extending direction of the tooth-shaped convex columns is vertical to the light emitting direction. The tooth-shaped convex columns are provided with a cutting angle, and the cutting angle inclines outwards from the top of the tooth-shaped convex columns to the bottom.

Further, each of the side portions occupies a length of about 1/3 in a longitudinal direction of the light emitting surface, so that the light shape can be widened toward a transverse position.

In addition, the side part is provided with a smooth area and at least one light guide area, and the tooth-shaped convex columns are distributed in the light guide area to be adjusted into corresponding light types.

Furthermore, the middle part of the light emitting surface protrudes towards the light emitting direction, so that the light type condensation light improves the local brightness.

Furthermore, the middle part of the light-emitting surface is provided with a cut-off profile of a light guide area adjacent to the light-emitting surface, the light guide area is provided with a plurality of tooth-shaped convex columns, and the extending directions of the tooth-shaped convex columns are intersected with the extending directions of the tooth-shaped convex columns, so that the light type can be locally diffused, the brightness is reduced, and the influence on the driving sight of the coming vehicle is avoided. The light guiding region of the middle portion may also have a geometric outline, such as a plurality of dots, a polygonal planar matrix structure, or a bump matrix structure.

Furthermore, a light guide region can be formed at the periphery of the outline of the light-emitting surface or near the outline of the light-emitting surface so as to improve the blue line phenomenon of the light type outline.

Other features and embodiments of the present application will be described in detail below with reference to the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an appearance diagram of an embodiment of a light guide pillar structure and a partially enlarged view of a light emitting surface microstructure thereof;

FIG. 2 is another enlarged view of a portion of the microstructure of the light emitting surface in FIG. 1;

FIG. 3 is a cross-sectional view of the light-emitting surface microstructure of FIG. 1;

FIG. 4 is a schematic light guiding view of the light-emitting surface microstructure shown in FIG. 1;

FIG. 5 is a front view of another embodiment of a light guide post structure;

FIG. 6 is a partially enlarged view of the microstructure of the light emitting surface in FIG. 5;

FIG. 7 is a schematic light guiding view of the light-emitting surface microstructure shown in FIG. 5;

FIG. 8 is a schematic view of another embodiment of a light guide pillar structure;

FIG. 9 is a partially enlarged view of the microstructure of the light-emitting surface of FIG. 8;

FIG. 10 is a schematic view of yet another embodiment of a light guide pillar structure;

FIG. 11 is a side view of the light guide post structure of FIG. 10;

FIG. 12 is a schematic view of an embodiment of a vehicular lamp structure, and a partially enlarged view of a micro-structure of a light incident surface of a vehicular lamp lens;

FIG. 13 is a side view of the vehicle lamp structure;

FIGS. 14 and 15 are graphs showing the results of irradiation regions using the light guide structure of FIG. 1;

FIG. 16 is a graph of the result of an illuminated area using the light guide structure of FIG. 5;

FIG. 17 is a result chart of an illumination area using the vehicle lamp structure of FIG. 12;

fig. 18 is a partial enlarged view of the irradiation region result chart of fig. 17.

Description of the symbols

10: the light source module 20: the light guide pillar 211: light incident surface

212: light-emitting surface 22: the middle portion 221: cut-off profile

223: convex surfaces 224,41, 42: light directing microstructures 225: light guide profile

23: light-guiding region 231: tooth convex column 25: side part

26: light-guiding region 261: the tooth-shaped convex column 262: corner cut

27: smooth region 40: lens and lens assembly

Detailed Description

The positional relationship described in the following embodiments includes: the top, bottom, left and right, unless otherwise indicated, are based on the orientation of the elements in the drawings. In the following description, the light emitting direction (X positive direction) of the vehicle lamp is taken as the front direction, the illumination area refers to a light emitting area generated after the light source is reflected, refracted or diffused by the light guide pillar, and the light type profile refers to a light and dark boundary of the illumination area, so as to meet the general understanding of those skilled in the art.

Referring to fig. 1 to 4, an embodiment of a light guide pillar structure is illustrated. The figure shows a light guide pillar structure installed in an optical illumination device of a mobile carrier. The light guide pillar structure has a light incident surface 221 (shown in fig. 12) for mounting the light source module 10, and a light emitting surface 212 (shown in fig. 12) facing the light emitting direction. The outline of the light-emitting surface 212 of the light-guiding pillar structure is used to define the light-type outline projected by the light source module 10, and taking the view shown in fig. 5 as an example, the outline of the light-emitting surface 212 can be roughly divided into a lower outline having a cut-off outline 221 formed by two folding angles and an upper outline (the outline indicated by reference numeral 22) having an arc-shaped outline, and the upper outline and the lower outline are overlapped at the ends far away from each other to form a closed outline. In addition, the light-emitting surface 212 has a middle portion 22 and two side portions 25 located at two sides of the middle portion 22 and being elongated.

In the embodiment shown in fig. 1 to 4, the side portion 25 has a plurality of tooth-shaped pillars 261 to form a light guiding region 26, the cross section of each tooth-shaped pillar 261 is triangular (as shown in fig. 3 and 4), the extending direction (Z direction) of the tooth-shaped pillar 261 is perpendicular to the light emitting direction (X direction), and the tooth-shaped pillar 261 has an inclined light emitting surface, so that the tooth-shaped pillars 261 are arranged along the light emitting surface 212 to form continuous and (as shown in fig. 4) inclined V-shaped grooves, which can emit the light inside the light guiding pillar outward, and increase the light shape width. Referring to fig. 14, when the light of the light source module 10 passes through the light guide pillar structure to generate the irradiation region, the tooth-shaped pillar 261 of the light guide region 26 may extend the width of both sides of the irradiation region. Further, each of the side portions 25 occupies a length of about 1/3 of the light exit surface 212 in the longitudinal direction, so that the light shape can be uniformly widened toward the transverse position.

Referring to fig. 5, in the present embodiment, the side portion 25 has a smooth region 27 adjacent to the lower contour and at least one light guide region 26 adjacent to the upper contour, and referring to fig. 2, the tooth-shaped pillars 261 have a cut angle 262, a cut surface inclined outward is formed from the top of the tooth-shaped pillar 261 to the bottom (lower contour), and the cut surface generated by the cut angle 262 on the tooth-shaped pillar 261 and the side surface of the smooth region 27 are continuous surfaces, so as to adjust the light and dark boundary generated by the lower contour or adjust the light shape corresponding to the light type.

Referring to fig. 1 and 13, the middle portion 22 of the light exit surface 212 of the light guide pillar structure protrudes toward the light exit direction and forms a convex surface 223, which can generate a light shape as shown in the lower diagram of fig. 15, and the local brightness of the illumination area of the middle portion 22 corresponding to the arrow portion is increased due to the light condensation (the color is white).

Referring to fig. 5 to 7, another embodiment of the light emitting surface structure is shown, in which the middle portion 22 of the light emitting surface 212 of the light guiding pillar structure further has a light guiding region 23 adjacent to the cut-off profile 221, and the light guiding region 23 has a plurality of tooth-shaped posts 231 having an inclined light emitting surface for changing the light angle without directly irradiating the front (X positive direction) to partially scatter the light pattern in the region, thereby generating a notch as shown by an arrow in the lower diagram of fig. 16. The light guide region 23 can reduce the brightness (due to the convex surface 223) and avoid the influence of the brightness of the irradiation region of the cut-off profile 221 on the driving sight of the oncoming vehicle. Further, the cross section of the tooth-shaped protrusion 231 of the light guiding region 23 may be the same as (triangular) or different from) the tooth-shaped protrusion 261, and the extending direction thereof may be the same as or intersecting with the extending direction of the tooth-shaped protrusion 261.

In addition, the microstructure of the light guiding region 23 may be configured to cause light rays in the light guiding pillar to be refracted, diffused, or scattered when the light rays are emitted through the light emitting surface 212, for example, the microstructure of the light guiding region 23 may be a plurality of circular dot plane profiles, a plurality of circular bumps, a plurality of polygonal plane profiles, or a plurality of polygonal bumps, or a matrix structure similar to the light guiding microstructures 41 and 42 described below, and has similar effects.

Referring to fig. 8 to 9, another embodiment of the light emitting surface of the light guiding pillar structure is shown, in which the light emitting surface 212 of the light guiding pillar structure is substantially planar (e.g., as shown in the upper portion of fig. 11), and the light emitting surface 212 constitutes another elongated light guiding region distributed in the middle of the arc-shaped contour of the upper contour of the light emitting surface 212. The light guide microstructures 224 in the light guide region have a plurality of circular bumps forming a matrix, and can generate the light pattern shown in the lower part of fig. 17 and 18, and the top and bottom pictures of fig. 17 and 18 respectively correspond to the improved front and rear light patterns, and the bottom picture adopts the light guide pillar structure of the embodiment. Fig. 17 shows the overall light pattern profile generated by the light exit surface 212 of the light guide pillar structure. Fig. 18 is an enlarged view of the middle portion of the light emitting surface, where the white portion in the middle of the picture in fig. 18 is a position where the light emission intensity of the illumination area is high, and the black area indicated by the arrow inside the white portion is a blue outline (i.e., a blue line) formed on the light pattern outline. As can be understood from fig. 17 and 18, the light guide pillar structures of fig. 8 to 9 can improve the blue line phenomenon of the light pattern profile.

The reason for the blue line phenomenon is that the white light LED is adopted as a light source, the LED is usually formed by mixing the blue light of the LED and the yellow light of the fluorescent powder, and the blue light has the characteristics of short wavelength and large refraction angle, so that the blue line is easily generated at the periphery of the light type. When driving, the light type contour of the blue part is easy to stimulate the vision of the opposite driver and generates the afterimage, therefore, the blue line phenomenon is improved, and the driving safety is ensured.

Referring to fig. 10 to 11, another embodiment of the light-emitting surface of the light guide pillar structure is shown, in which another light guide structure capable of improving the blue line phenomenon is formed on the planar light-emitting surface 212. In the present embodiment, the upper contour of the light-emitting surface 212 of the light-guiding pillar structure is provided with a circular corner formed along the circumference of the arc-shaped contour, so that a linear light-guiding contour 225 is formed on the upper contour of the light-guiding pillar structure. This configuration also refracts, diffuses, or scatters light emitted from the upper profile, and thus can also produce a light pattern as shown in the lower diagram of fig. 17. However, it is also possible to choose to construct a rounded corner only on the periphery of at least a portion of the arc-shaped profile of the light-emitting surface, so that the corresponding position has the light-guiding profile 225 described above, and similar effects can be produced.

Referring to fig. 13 and 14, a light guide pillar 20 and a bi-convex lens 40 are sequentially disposed in a light emitting direction of a light source module 10, the light guide pillar 20 is configured as the light guide pillar structure, and a light emitting surface 212 of the light guide pillar 20 defines a light emitting profile and an illumination area. The light-emitting surface 212 at least has a plurality of tooth-shaped protrusions 261 located at the side portion 25 of the light-emitting surface 212, and the extending direction of the tooth-shaped protrusions 261 intersects with the light-emitting direction.

In the light-emitting direction, the lenticular lens 40 substantially forms a rectangular profile, the light-entering surface of the lenticular lens 40 has a plurality of light guide microstructures 41,42 in matrix distribution, and the light guide microstructures are at least located in the light-emitting direction and correspond to edge positions of the light-type profile. The edge position here refers to a light and dark boundary adjacent to the irradiation region, but not limited to this, the light guide microstructure may be divided at any position of the lenticular lens 40 to adjust the light shape. Accordingly, a light pattern as shown in the lower diagram of fig. 17 can be generated, and the blue ray phenomenon of the light pattern can be improved.

In the present embodiment, the light guiding microstructures 41 and 42 form a plurality of light guiding regions on the light incident surface of the lenticular lens 40, the light guiding microstructures 41 are a square matrix when approaching the short side of the lenticular lens 40 (i.e. corresponding to the light pattern of the side portion 25 of the light guiding pillar 20), the light guiding microstructures 42 are a circular matrix when approaching the middle portion of the lenticular lens 40 (i.e. corresponding to the light pattern of the middle portion 22 of the light guiding pillar 20), and the light guiding microstructures of other portions gradually change from a square shape to a circular shape from the short side to the middle portion of the lenticular lens 40, so as to improve the damage of the blue line phenomenon of the light pattern to the driver.

In other embodiments, the lens 40 may be any lens that can produce a light focusing effect, such as a plano-convex lens.

The above-described embodiments and/or implementations are only illustrative of the preferred embodiments and/or implementations for implementing the technology of the present application, and are not intended to limit the implementations of the technology of the present application in any way, and those skilled in the art can make many changes and modifications to the other equivalent embodiments without departing from the scope of the technology disclosed in the present disclosure, but should be regarded as the technology and implementations substantially the same as the present application.

Claims (11)

1. A light guide column structure is arranged on an optical lighting device of a mobile carrier, and defines a light inlet surface and a light outlet surface.

2. The light guide pillar structure of claim 1, wherein the tooth-shaped pillars extend in a direction perpendicular to the light exit direction.

3. The light guide pillar structure of claim 1, wherein the side portion has a smooth region and at least one light guide region, and the tooth-shaped protrusions are distributed in the light guide region.

4. The light guide pillar structure of claim 1, wherein the tooth-shaped pillars have a chamfer that is inclined outward from the top toward the bottom of the tooth-shaped pillars.

5. The light guide pillar structure of claim 1, wherein each of the side portions occupies a length of about 1/3 in a longitudinal direction of the light exit surface.

6. The light guide pillar structure of claim 1, wherein a profile of the light exit surface defines an arc-shaped profile and a lower profile, the lower profile has a cut profile formed by two folding angles, and the light exit surface has a light guiding region adjacent to or at least partially located on the profile.

7. The light guide post structure of claim 6, wherein the light guide region is adjacent to or located at a middle portion of the arc-shaped profile.

8. The light guide structure of claim 6, wherein the light guide region is adjacent to the stop profile, the light guide region having a plurality of toothed projections, an extending direction of the toothed projections intersecting an extending direction of the toothed projections.

9. The light guide pillar structure of claim 6, wherein the light guiding region of the middle portion of the light exit surface is configured to refract, diffuse, or scatter light in the light exit direction.

10. The light guide pillar structure of any one of claims 1 to 9, wherein the middle portion of the light exit surface is convex toward the light exit direction.

11. The light guide pillar structure of any one of claims 6 to 9, wherein a peripheral edge of at least a portion of the arc-shaped profile of the light exit surface forms a rounded corner, the rounded corner defining the linear light guide region.

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