CN209744275U - Even light board, even light board subassembly and lamps and lanterns for car - Google Patents

Abstract

Embodiments of the present disclosure relate to a light unifying plate (1) and a lamp (100) for an automobile. The light uniformizing plate (1) comprises: a substrate (10) having a first refractive index; a plurality of pits provided in the first substrate (10); and a layer (20) of filler material having a second refractive index different from the first refractive index and filling the pits. According to the light uniformizing plate and the automobile lamp (100), materials with different refractive indexes are arranged in the light uniformizing plate, and light is diffused through the concave pits, so that the light uniformizing plate can be thinner, and the light emission is more uniform.

Description

Even light board, even light board subassembly and lamps and lanterns for car

Technical Field

Embodiments of the present disclosure relate generally to automotive lighting, and more particularly to thin light homogenizing panels for automotive lighting.

Background

Light fixtures are widely used in lighting applications such as automotive light fixtures, decorative LOGO lighting, and the like. Use lamps and lanterns for the car as the example, LOGO lamp is installed usually to automobile threshold, and light jets out from the fretwork panel, and traditional lamps and lanterns are thicker, and occupation space is big, and this kind of situation is difficult to satisfy the requirement to threshold height further reduction. As another example, the automobile rearview mirror tends to be small in design and function integration, and thus a camera, a turn light, a floor light, an electric adjusting module, and the like are integrated in the automobile rearview mirror, however, the space of the rearview mirror is narrow, and there is a technical difficulty in installing a lamp satisfying a lighting requirement in such a narrow space, which forces the size of the rearview mirror to be difficult to reduce. In addition, the automobile lamp has a problem of low lighting efficiency. For example, in a license plate lamp of an automobile, a conventional license plate and a license plate lamp are separated to meet the illumination requirement, and such a conventional structure restricts the design of the rear portion of the automobile and increases the complexity of installation. As another example, in a conventional automobile headlamp or tail lamp, a sidewall transmission mode or a direct-projection mode is adopted, and a sidewall transmission mode is adopted, so that the luminous efficiency is low, and the illumination cost is increased; and the direct injection mode is adopted, so that the granular sensation is strong, and the attractiveness of the lamp is influenced.

There is no solution to solve the above problems. Accordingly, improvements to conventional light fixtures to better meet the needs are desired.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a even worn-out fur and lamps and lanterns for car to solve one or more among the above-mentioned problem.

According to an aspect of the present disclosure, there is provided a light unifying plate including: a substrate having a first refractive index; a plurality of pits provided in the first substrate; and a filler material layer having a second refractive index different from the first refractive index and filling the pits.

According to the light unifying plate of the present disclosure, since the filling material having a refractive index different from that of the substrate fills the pits and diffuses light via the pits, the light unifying plate can be made thinner and light emission is made more uniform.

in some embodiments, the shape of the dimples is selected from one or more of hemispherical, ovoid, masonry, polygonal, pyramidal, bar, and combinations thereof.

In some embodiments, the pits have an equivalent diameter in the range of 0.1mm to 3 mm.

In some embodiments, the depths of at least two adjacent dimples of the plurality of dimples are different from each other.

in some embodiments, the substrate comprises a transparent, translucent, or colored high light transmittance material.

In some embodiments, the layer of filler material is formed to the substrate by injection molding or plating.

In some embodiments, the smoothing plate is in the form of a continuous sheet.

in some embodiments, the thickness of the dodging plate is in the range of 0.5mm-15 mm.

In some embodiments, the dodging panel further comprises optical stripes disposed at its exit surface.

according to another aspect of the present disclosure, there is provided a dodging plate assembly. The light homogenizing plate assembly at least comprises two light homogenizing plates which are staggered and stacked with each other.

According to another aspect of the present disclosure, a light fixture for an automobile is provided. The lamp for the automobile comprises a circuit board, a light source and a light source, wherein at least one LED is carried on the circuit board; and a light homogenizing plate according to the above arranged adjacent or surrounding the at least one LED; wherein, the light emitted by at least one LED is emitted out of the lamp after being homogenized by the light homogenizing plate.

In some embodiments, the LED is closest to the dodging plate by about 0.5mm, and the direct light emitting efficiency is high; by means of matching with the high dispersion efficiency characteristic of the light-homogenizing plate made of the birefringence material, the light, thin, efficient and uniform advantages can be achieved.

The light homogenizing plate according to the embodiment of the disclosure has one or more of the following advantages, including: the cutting property, the combinability, the superposition property and the universality are higher, the manufacture is simple, and the development time and the cost are lower.

Drawings

The above and other objects, features and advantages of the embodiments of the present disclosure will become more readily understood through the following detailed description with reference to the accompanying drawings. Various embodiments of the present disclosure will be described by way of example and not limitation in the accompanying drawings, in which:

Fig. 1 shows a schematic structural view of a smoothing plate according to an exemplary embodiment of the present disclosure;

FIG. 2 illustrates a schematic light path diagram of a smoothing plate according to an exemplary embodiment of the present disclosure;

FIG. 3 illustrates a structure of a smoothing plate and a schematic light path according to another exemplary embodiment of the present disclosure;

FIG. 4 shows a schematic structural view of a smoothing plate according to yet another exemplary embodiment of the present disclosure;

Fig. 5 shows a schematic structural view of a smoothing plate according to a further exemplary embodiment of the present disclosure; and

Fig. 6 shows a schematic structural diagram of a luminaire of an exemplary embodiment of the present disclosure.

Detailed Description

The principles of the present disclosure will now be described with reference to various exemplary embodiments shown in the drawings. It should be understood that these examples are described merely to enable those skilled in the art to better understand and further implement the present disclosure, and are not intended to limit the scope of the present disclosure in any way. It should be noted that where feasible, similar or identical reference numerals may be used in the figures and that similar or identical reference numerals may indicate similar or identical functions. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the invention described herein.

The structure and principle of the smoothing plate 1 according to an exemplary embodiment of the present disclosure will be described in detail with reference to fig. 1 and 2.

as shown in fig. 1, the smoothing plate 1 includes a substrate 10, a plurality of pits, and a filler material layer 20. The substrate 10 has a first refractive index. A plurality of pits are provided in the substrate 10. The filler material layer 20 has a second refractive index different from the first refractive index and fills the pits.

Fig. 2 is a schematic view showing the optical path of the light unifying plate 1 of fig. 1. As shown in fig. 2, a plurality of pits are provided in the dodging plate 1. The pits are filled with a layer of filler material 20. When light from the light source enters the light uniformizing plate 1, a part of the light directly entering the substrate 10 is refracted by the substrate 10 and emitted as shown by an arrow; the other part of the light is incident to the filling material layer 20 and is refracted in the filling material layer 20, and the refracted light is then incident to the substrate 10 and is refracted by the substrate 10 to be emitted.

As can be seen from the optical path diagram of fig. 2, due to the existence of the pits, the propagation deflection angle of light in different media is larger, and the pit structure can be designed according to requirements. Since two materials are integrated and light is diffused through the pits in the light unifying plate, the light unifying plate can be made thinner and light emission is made more uniform.

In some embodiments, the substrate 10 comprises a transparent or translucent, or tinted material, such as high light transmittance PC, PMMA, and the like, as well as composite modifications thereof, may be suitable for use as the substrate.

Although in the illustrated embodiment, the dimples are formed in a hemispherical shape. It should be understood that this is merely exemplary. The shape of the dimples may also be other shapes such as ovoid, semi-ovoid, polygonal, diamond, rounded cones, bars, and the like. The shape of the pits provided in the substrate 10 may be a combination of these shapes.

In some embodiments, the pits have an equivalent diameter in the range of 0.1mm to 3 mm. It should be understood that the term "equivalent diameter" is a diameter calculated after converting a projected area of a shape on a projection plane (e.g., along a light incident direction) into a circle. It should be understood that the numerical ranges for the equivalent diameters described above are also exemplary only. The size of the equivalent diameter for the pits can be determined by taking into account the thickness of the smoothing plate or substrate and the refractive index of the material. It should be understood that in some embodiments, the area of the equivalent diameter may be greater than 3mm, such as 5mm, 10mm, 20mm, or even greater. In view of the present application, which aims to achieve a relatively thin light homogenizing plate as much as possible, the inventors have found that the above size range can effectively meet the requirements of the luminous intensity and thickness of the lamp.

In some embodiments, the size of the pits can be made very small and densely distributed in the substrate 10. Since the pits are small in size and densely distributed in the substrate. Therefore, after being used in a lamp, for example, an automobile lamp, the arrangement position of the LEDs adjacent to the light uniformizing plate has no influence on the light emitting effect of the light uniformizing plate. Therefore, the universality of the light homogenizing plate can be greatly enhanced.

In some embodiments, the plurality of pits are dispersedly disposed in the substrate in a regular pattern. This way, the influence on the light intensity at different positions of the dodging plate can be reduced. The universality of the dodging plate is further enhanced

In some embodiments, the layer of filler material 20 comprises a transparent or translucent, or tinted material. It is noted that the refractive index of the filler material layer 20 is different from the refractive index of the substrate 10. The filler material layer 20 is formed to the substrate 10 by injection molding or plating, for example. Although in the illustrated embodiment, the filling material layer 20 is filled only in the pits of the substrate 10; it should be understood that this is merely exemplary, and in some embodiments, the layer of filler material 20 may cover the entire surface of the substrate 10 in the form of a film. This has advantages in terms of manufacturing.

In some embodiments, the light unifying plate 1 is in the form of a continuous sheet. The size of the integrator panel can be freely tailored by the user as desired for use in different light sources. This further reduces the manufacturing costs, transport and packaging costs of the light homogenizing plate 1.

In some embodiments, the light unifying plate 1 has a thickness in the range of 0.5mm to 15 mm. It should be understood that the above numerical ranges are also exemplary only. The smoothing plate 1 can be determined by considering the thickness of the smoothing plate or the substrate and the refractive index of the material in combination. In some embodiments, the size of the light homogenizing plate 1 can be made larger as desired.

In some embodiments, as shown in fig. 1, the dodging sheet 1 further comprises optical stripes 30 disposed at its exit surface. The light intensity emitted by the light homogenizing plate 1 can be further homogenized by means of the optical stripes 30. In the illustrated embodiment, the optical fringes 30 are faceted prism faces. It should be understood that this is merely exemplary and that the optical fringes 30 may be in various other shapes as are well known in the art, such as frosted surfaces and the like.

Fig. 3-5 show several variations of the smoothing plate 1 according to embodiments of the present disclosure.

As shown in fig. 3, the smoothing plates 1 may be combined with each other. For example, two smoothing plates may be stacked in a staggered relationship with respect to each other. Whereby the dodging effect can be further enhanced. It should be understood that the illustrated embodiment has two light uniformizing plates, which is merely exemplary, and three or more light uniformizing plates 1 stacked in a staggered manner may be provided according to the size of the pits and the desired degree of light uniformization.

as shown in fig. 4, the smoothing plate 1 may further include a plurality of protrusions 40. For example, the protrusion 40 is protrudingly provided on the substrate 10. Wherein the protrusion 40 is made of a material having a refractive index different from that of the substrate. By means of the protrusions 40, similar to the pits, it is also possible to achieve a change in the diffusion of incident light to enhance the dodging effect.

as shown in fig. 5, the pits in the substrate 10 may be formed to different depths. This allows the direction of incidence of different light to be varied to produce different crystal effects. In some embodiments, different dimples may be made of different materials. Thus, different lighting effects can be produced fig. 6 shows a schematic structural diagram of a luminaire according to an exemplary embodiment of the present disclosure. As shown in fig. 6, the luminaire 100 includes a circuit board 120 and a light unifying plate 1. One or more LEDs 130 are carried on the circuit board 120. The light uniformizing plate 1 is disposed adjacent to the LED130, and light emitted from the LED130 is emitted through the light uniformizing plate 1. Since the lamp employs the light uniforming plate 1 according to the present disclosure, the lamp has the advantages described above with respect to the light uniforming plate. Detailed description thereof will be omitted.

In some embodiments, as shown, the light fixture further includes a housing 110 and a light transmissive cover 140. The housing is used, for example, to support the circuit board 120. In some embodiments, the light transmissive cover 140 may be a lens to achieve further convergence or divergence of the light. In some embodiments, the housing 110 and the light transmissive cover 140 enclose a sealed space to achieve the dustproof and waterproof effect. It should be understood that the illustrated luminaire is merely exemplary, and components not relevant to the present application have been omitted for clarity. In some embodiments, the luminaire may also include, for example, sealing elements, heat dissipating elements, and the like.

The luminaire of fig. 6 according to the present disclosure may be used, for example, in automotive luminaires, such as a LOGO lamp, an automotive rearview lamp, an automotive license plate lamp, an automotive tail lamp, and/or an automotive headlamp for making automotive doorsills. Of course, the lamp may be used in other fields than automobiles.

those skilled in the art will understand that: the foregoing description is provided for the purpose of illustration and not limitation. It will be apparent to one skilled in the art that the present invention may be practiced in other implementations that depart from these specific details. Furthermore, unnecessary detail of known functions and structures may be omitted from the current description so as not to obscure the present invention.

Although specific embodiments have been illustrated and described herein, those of ordinary skill in the art appreciate that any arrangement which is calculated to achieve the same purpose may be substituted for the specific embodiments shown and that the invention has other applications in other environments. This application is intended to cover any adaptations or variations of the present invention. The following claims should in no way be construed to limit the scope of the invention to the specific embodiments described herein.

Claims (11)

1. A light distribution plate (1), comprising:

A substrate (10) having a first refractive index;

A plurality of recesses provided in the substrate (10); and

a layer of filler material (20) having a second refractive index different from the first refractive index and filling the pits.

2. A light homogenizing plate (1) according to claim 1, characterized in that the shape of the pits is selected from one or more of hemispherical, oval, masonry, polygonal, pyramidal, bar-shaped and combinations thereof.

3. A light distribution plate (1) according to claim 2, wherein the pits have an equivalent diameter in the range of 0.1mm to 3 mm.

4. a light distribution plate (1) according to any of claims 1-3, wherein the depth of at least two adjacent recesses of said plurality of recesses differs from each other.

5. A light unifying plate (1) according to any of claims 1-3 characterized in that the substrate (10) further comprises a plurality of protrusions (40), wherein the protrusions (40) are made of a material of a third refractive index different from the first refractive index.

6. A light homogenizing plate (1) according to any of claims 1-3, characterized in that the layer of filler material (20) is formed to the substrate (10) by injection molding or coating.

7. a light distribution plate (1) according to any of claims 1-3, characterized in that the light distribution plate (1) is in the form of a continuous sheet.

8. A light distribution plate (1) according to any of claims 1-3, characterized in that the thickness of the light distribution plate (1) is in the range of 0.5-15 mm.

9. A light distribution plate (1) according to any of claims 1-3, characterized in that the light distribution plate (1) further comprises optical stripes (30) arranged at its exit surface.

10. An assembly of light evening boards (1), characterized in that one light evening board (1) according to any one of claims 1-9 and another light evening board (1) according to any one of claims 1-9 are stacked in a staggered manner with respect to each other.

11. A luminaire (100) for an automobile, comprising:

A circuit board (120) on which at least one LED (130) is carried; and

A light unifying plate (1) according to any of claims 1-9 arranged adjacent to or surrounding said at least one LED (130);

Wherein light emitted by the at least one LED (130) is homogenized by the light homogenizing plate (1) and exits the luminaire (100).