CN104791714A - Collector light guide - Google Patents

Abstract

A light collecting and guiding device, comprising: at least one light guide unit, which comprises a flat light guide part and a light collecting part. The light guide part comprises two first light guide surfaces at intervals, two second light guide surfaces connected with the first light guide surfaces, and a light guide light incoming surface and a light guide light outgoing surface which are opposite at intervals. The light collecting part comprises a light collecting and entering surface and a light collecting and exiting surface facing the light guiding and entering surface. The light enters the light guide part through the light incident and incident surface, the light emergent and incident surfaces and the light incident surface, and is finally emitted out through the light emergent and incident surface after being conducted by the light guide part. The light guide unit is flat, so that the point light source can be guided into a strip-shaped surface light source to meet the use requirement. The invention can extend along the edge of the lamp, and is beneficial to strengthening the edge shape of the lamp.

Description

Collector light guide

technical field

The invention relates to a light-collecting light guide, in particular to a light-collecting light guide for guiding light from a luminous element.

Background technique

In recent years, light-emitting diode lamps (LED lamps) as light sources have been widely used in car lights, and the light source of LED lamps is mainly guided forward through a light-guiding lens, and the structural design of the light-guiding lens will affect the projected optical pattern. Referring to Fig. 1, taking US Patent No. US7270454 as an example, a car lamp disclosed by it mainly includes a light emitting element 11 and a lens 12, and the lens 12 includes a direct light control part 121, and a surrounding light control part 121 of the reflected light control unit 122 . Both a front surface 123 and a rear surface 124 of the reflected light control portion 122 are uneven concave-convex surfaces. The light entering the reflected light control part 122 is mainly reflected once to emit light, and the light directed to the rear surface 124 can be reflected and emitted to the outside toward the front surface 123 . The optical pattern formed in this patent is mainly several ring-shaped bright lines and dark lines arranged at intervals.

In fact, judging from the overall appearance of the lens 12, it presents a three-dimensional arc-shaped design (as can be seen from the front view of Figure 1 of the patent), which can convert the point light source of the light-emitting element 11 into a surface light source from the front view. Surface 123 shoots out. But on the other hand, there is currently a demand for car lights. It is hoped that in addition to the main light that emits light in a large area, the car light can also have auxiliary lights that can strengthen the outline of the car light. Therefore, how to design an innovative structure of a light guide element that can be installed in the limited space of the car light and extend along the outline of the car light is an important issue.

In addition to car lights, other lighting fixtures, signal lights, decorative lamps or advertising light boxes and other equipment, and whether they are used in indoor or outdoor occasions, there will also be a need to use light guide elements and light-emitting parts to emphasize the shape of the lamps. . In view of the fact that the public has different needs and considerations for the selection of light guide elements, in order to meet the needs of consumers, the inventor of this case proposes another light guide with innovative structure and different optical functions.

Contents of the invention

The purpose of the present invention is to provide a light-collecting and light-guiding device which has an innovative structure, is convenient for installation, and can emphasize the edge shape of a lamp.

The light collecting light guide of the present invention comprises: at least one light guiding unit, the light guiding unit includes a flat light guiding part and a flat light collecting part, and the light guiding part includes two first light guiding parts spaced opposite each other surface, two second light-guiding surfaces opposite to each other and connected to the first light-guiding surface, a light-guiding light-incident surface connected to one end of the first light-guiding surface and the second light-guiding surface, and a connection The light-guiding light-emitting surface at the other end of the first light-guiding surface and the second light-guiding surface and opposite to the light-guiding light-incident surface; A light-collecting light-incoming surface for light to enter, and a light-collecting light-emitting surface facing the light-guiding light-incoming surface; After being inside the light guide part, it can be reflected by the first light guide surface and the second light guide surface, and then emit toward the light guide light exit surface.

In the light-collecting light-guiding device of the present invention, the light-collecting and light-emitting surface includes several microstructures capable of diffusing atomized light.

In the light-collecting light-guiding device of the present invention, the light-guiding and light-emitting surface is a rough surface.

According to the light-collecting light-guiding device of the present invention, the light-guiding incident surface is recessed toward the inside of the light-guiding part from one end of the first light-guiding surface and the second light-guiding surface, and defines a mounting for the light-collecting part. groove.

According to the light-collecting light-guiding device of the present invention, the light-guiding light-incident surface has a first light-incident section arc-protruding toward the light-collecting part, and a ring-shaped ring connected to the periphery of the first light-incident section and connected to the first light-incident section. A light-incident section jointly defines a second light-incident section of the installation groove.

The light-collecting light-guiding device of the present invention includes several light-guiding units, the light-guiding parts of the light-guiding units are connected and form a ring structure around an axis, and the light-guiding parts of the light-guiding parts The light exiting surfaces are connected and form a torus around the axis.

The beneficial effect of the present invention is that: through the flat design of the light guide unit, the point light source can be guided into a strip-shaped surface light source to meet the use requirements. The invention can extend along the edge of the lamp, which is very convenient for installation and helps to strengthen the shape of the edge of the lamp; and the light collecting function of the light collecting part can improve the luminous efficiency.

Description of drawings

Fig. 1 is a sectional view of a known car lamp;

Fig. 2 is a perspective view of a preferred embodiment of the light collecting light guide of the present invention;

Figure 3 is a partial sectional view of the preferred embodiment;

Fig. 4 is a partial schematic diagram of the preferred embodiment, and the arrows in the figure indicate the light travel path;

FIG. 5 is a schematic diagram showing a luminous pattern formed by the light of a luminous element being guided by the light guide unit of the preferred embodiment.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

The light collection light guide of the present invention includes at least one light guide unit 3 . Referring to Fig. 2, 3, 4, the preferred embodiment of the light-collecting light guide of the present invention is used to guide the light of several luminous elements 21 (only one is shown in the figure), and each luminous element 21 is for example a light-emitting diode (LED), and the light-emitting element 21 is arranged on a circular circuit board 22 . The light-collecting and light-guiding device has a substantially ring-shaped structure as a whole, and includes several flat light-guiding units 3 .

Each light guiding unit 3 includes a light guiding portion 4 and a light collecting portion 5 . The light guide part 4 of the light guide unit 3 is integrally made of plastic material, and is connected to form a ring structure around an axis L. As shown in FIG. Each light guide part 4 is arc-shaped and flat around the axis L, and includes two first light guide surfaces 41 that are opposite to each other along the arc length direction and gradually approach from top to bottom. The radial direction of the optical device is opposite and connected to the second light guide surface 42 between the first light guide surface 41, a second light guide surface 42 connected to one end of the first light guide surface 41 and the second light guide surface 42 A light-guiding and incident surface 43 , and a light-guiding and light-emitting surface 44 connected to the other ends of the first light-guiding surface 41 and the second light-guiding surface 42 and opposite to the light-guiding and incident surface 43 .

Wherein, the light-guiding light-incident surface 43 is, as a whole, from the end of the first light-guiding surface 41 and the second light-guiding surface 42 far away from the light-guiding light-emitting surface 44, recessed toward the inside of the light-guiding portion 4 and A mounting groove 430 for the light collecting part 5 is defined. The light-guiding light-incident surface 43 has a first light-incident section 431 protruding toward the light-collecting portion 5 , and a ring-shaped ring connected to the periphery of the first light-incident section 431 and shared with the first light-incident section 431 . A second light-incident section 432 of the installation groove 430 is defined.

The light guide exit surface 44 and the light guide entrance surface 43 are arranged at intervals along the axis L direction. The light-guiding and light-emitting surface 44 is a rough surface, and has a plurality of tooth-like structures 441 that are connected and arranged in a ring around the axis L, so as to provide the function of light diffusion and atomization. Each tooth-shaped structure 441 in this embodiment extends from a side of the light-emitting surface 44 connected to one of the second light-guiding surfaces 42 toward the direction of the other second light-guiding surface 42 . The light-guiding and light-emitting surfaces 44 of the light-guiding portion 4 are connected to form a torus around the axis L. As shown in FIG.

The light-collecting portion 5 of each light-guiding unit 3 is located on one side of the light-guiding incident surface 43 , and is disposed in the mounting groove 430 of the light-guiding portion 4 . The light-collecting portion 5 is made of light-transmitting plastic material and is arc-shaped and flat around the axis L. As shown in FIG. The light-collecting portion 5 includes a light-collecting and light-incoming surface 51 for light to enter, and a light-collecting and light-emitting surface 52 facing the light-guiding and light-incoming surface 43 . The light-collecting and incident surface 51 of this embodiment is a planar design. The light-collecting and light-emitting surface 52 is roughly arc-shaped and partially provided with a protruding structure. The light-collecting and light-emitting surface 52 includes several first light-incident sections 431 that protrude toward the light-guiding light-incoming surface 43 and are used for diffusion and atomization. Light Microstructure 521 . In this embodiment, there is a gap between the light collecting part 5 and the light guiding part 4 , thereby defining an air layer 6 between them.

When the present invention is used, the light-emitting elements 21 are arranged one by one on the side of the light-collecting and incident surface 51 of the light-collecting portion 5 . After the light of each light-emitting element 21 enters the light-collecting part 5 through each light-collecting light-incident surface 51, the light is collected by the light-collecting part 5, and the point light source light of the light-emitting part 21 can be guided and collected into a luminous three-dimensional Less angled light. When the light then exits the light-collecting portion 5 through the light-collecting light-emitting surface 52, the light is refracted between the interface between the light-collecting portion 5 and the air layer 6, so that the light can pass through the first light-guiding light-incident surface 43. A light incident section 431 and a second light incident section 432 enter the light guiding portion 4 . The continuous light is guided by the light guide part 4 , reflected (mainly total reflection) by the first light guide surface 41 and the second light guide surface 42 , and exits toward the light guide light exit surface 44 .

Referring to Figures 2, 4, and 5, since the light-guiding light-emitting surface 44 of the light guide part 4 is connected to form a torus, when viewing the light-guiding and light-emitting surface 44, it can be seen that a circular shape is roughly along the torus. The luminescent pattern 7 (shown by a dotted area in FIG. 5 ).

Therefore, in the present invention, the light collecting function of the light collecting part 5 can improve the luminous efficiency, and make the light enter the light guiding part 4 according to the shape of the light guiding light incident surface 43 of the light guiding part 4 . The light guide part 4 is designed with an appropriate optical structure based on the light emitting form of the light collecting part 5, and the curvature design of the first light guide surface 41 and the second light guide surface 42 can be The light from the light-emitting element 21 is reflected toward the light-guiding light-emitting surface 44, and then guides the point light source of the light-emitting element 21 into a two-dimensional surface light source. For each light-guiding unit 3, its light-emitting pattern is as follows: The shape of 44 can form a two-dimensional plane elongated arc-shaped light-emitting surface, and when all the light guide units 3 are viewed together, they cooperate to form a ring-shaped light-emitting surface.

It is supplemented that the microstructure 521 of the light-collecting part 5 can help atomize the soft light when the light exits the light-collecting light-emitting surface 52; similarly, the tooth-shaped structure 441 of the light-guiding part 4 can also Used to diffuse fog light. However, when the present invention is implemented, it is not necessary to provide the microstructure 521 and the tooth-shaped structure 441 .

To sum up, through the flat design of each light guide unit 3 , the point light source can be guided into a strip-shaped surface light source to meet the usage requirements. In application, the present invention can be installed on the periphery of a main lamp not shown in the figure as an auxiliary lamp or a decorative lamp, and because the light guide unit 3 is flat, it is convenient to surround and install along the periphery of the main lamp, and the space is limited In terms of light fixtures, it is still quite convenient to install the present invention. The innovative structure of the present invention can produce a two-dimensional strip-shaped luminous pattern, which can extend along the edge of the lamp, helping to strengthen the shape of the edge of the lamp.

Claims (6)

1. a light harvesting lightguide, comprise: at least one light element, it is characterized in that: this light element comprises the light guide section of a flat and the light collecting portion of a flat, this light guide section comprises the first relative light guiding surface of two intervals, two intervals relatively and connect the second light guiding surface, the guide-lighting incidence surface being connected to one end of described first light guiding surface and the second light guiding surface of described first light guiding surface, and the other end the guide-lighting exiting surface relative with this guide-lighting incidence surface interval being connected to described first light guiding surface and the second light guiding surface; This light collecting portion is positioned at the side of this guide-lighting incidence surface, and comprises a light harvesting incidence surface entered for light, and a light harvesting exiting surface towards this guide-lighting incidence surface; After light enters in this light guide section via this light harvesting incidence surface, this light harvesting exiting surface and this guide-lighting incidence surface, described first light guiding surface can be subject to and the second light guiding surface reflects and penetrates towards this guide-lighting exiting surface.

2. light harvesting lightguide as claimed in claim 1, is characterized in that: this light harvesting exiting surface comprises several micro-structural that can spread atomization light.

3. light harvesting lightguide as claimed in claim 2, is characterized in that: this guide-lighting exiting surface is rough surface.

4. light harvesting lightguide as claimed in claim 1, is characterized in that: this guide-lighting incidence surface defines towards this light guide section inner recess the mounting groove that this light collecting portion of confession arranges from one end of described first light guiding surface and the second light guiding surface.

5. light harvesting lightguide as claimed in claim 4, it is characterized in that: this guide-lighting incidence surface has a first light inlet section of dashing forward towards this light collecting portion arc, and one is connected to this first light inlet section periphery ringwise, and jointly define the second light inlet section of this mounting groove with this first light inlet section.

6. light harvesting lightguide as claimed in claim 1, it is characterized in that: this light harvesting lightguide comprises several light element, the light guide section of described light element is connected and forms a circulus around an axis, and the guide-lighting exiting surface of described light guide section is connected and forms an anchor ring around this axis.