CN218966798U - Uniform light-emitting structure - Google Patents

Abstract

The utility model relates to the technical field of automobile illumination, in particular to a uniform light-emitting structure, which comprises an LED light source and an optical element, wherein the optical element comprises a lower reflecting surface and a light-emitting surface, the lower reflecting surface is provided with a convex part, light emitted by the LED light source reaches the convex part of the lower reflecting surface through reflection and refraction, the convex part of the lower reflecting surface diffusely reflects light to the light-emitting surface to reflect light, and the lower reflecting surface of the uniform light-emitting structure is provided with a tiny convex structure such as a small ball, and the convex structure damages the mirror reflection of the incident light of the LED, so that the light is uniformly dispersed and distributed to all parts of an inner lampshade. Through adjusting the density and the size of the protruding structure, the area which is too bright or too dark can be freely adjusted, so that the uniformity of the lamp is improved, and the design efficiency is improved.

Description

Uniform light-emitting structure

Technical Field

The utility model relates to the technical field of automobile illumination, in particular to a uniform light-emitting structure.

Background

At present, under the condition that the space of a car lamp is limited, most structures capable of directly emitting light by an LED are selected, and the uniformity of the light emitting mode is greatly problematic, and mainly has the following problems: (1) Under the condition of smaller space of the lamp, the LED collimation direct projection scheme can cause obvious bright spots and dark areas, and the lighting uniformity is poor; (2) Under the direct projection scheme, the quantity of LEDs is large, and the heat is too high due to the fact that the power of the lamp is large. Therefore, the design efficiency is low, and the development period of the whole vehicle is influenced; furthermore, few area light sources or OLED light emitting modes can be selected, and the scheme can solve the problem of uniformity of the lamp, but has higher cost.

Disclosure of Invention

In order to solve the problem of uneven light emission of the existing LED light source in the prior art, the utility model provides a uniform light emitting structure adopting an LED light source.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a uniform light-emitting structure, includes LED light source and optical element, optical element include lower reflecting surface and play plain noodles, lower reflecting surface be equipped with the convex part, the convex part that the light that LED light source sent reached lower reflecting surface through reflection and refraction, the convex part of lower reflecting surface carries out the refraction light with light diffuse reflection to play plain noodles.

Further, the convex part protrudes towards the direction close to the light emergent surface.

Further, the convex part is spherical, tooth-shaped or quadrangular.

As an embodiment of the utility model, the uniform light-emitting structure further comprises an upper reflecting surface and a first light-in surface, and light emitted by the LED light source is reflected by the upper reflecting surface and then refracted by the first light-in surface to reach the lower reflecting surface.

Further, the upper reflecting surface is provided with a plating layer.

Preferably, the electroplated layer is made of aluminum or chromium.

As another embodiment of the utility model, the uniform light-emitting structure further comprises a second light-in surface, and the light emitted by the LED light source is refracted by the second light-in surface and then reaches the light-out surface, and then is reflected to the lower reflecting surface through the light-out surface.

The beneficial effects are that:

(1) The lower reflecting surface of the uniform light-emitting structure is provided with the tiny convex structures such as the small balls, the convex structures destroy the mirror reflection of the incident light of the LED, so that the light is dispersed and uniformly distributed to all parts of the inner lampshade, and the area which is too bright or too dark can be freely adjusted by adjusting the density and the size of the convex structures, so that the uniformity of the lamp is improved, and the design efficiency is improved;

(2) According to the uniform light-emitting structure direct-irradiation structure disclosed by the embodiment 1, the scheme of an upper reflecting surface, a first light-in surface, a lower reflecting surface and a light-out surface is adopted, light emitted from an LED is reflected through an aluminized paraboloid, and enters the lower reflecting surface which is refracted to the bottom of a thick-wall piece through the light-in surface;

(3) The LED is efficiently utilized, the process difficulty is reduced, the space of the lamp is reduced, the development cost of the whole vehicle is saved, and the research and development period of the lamp is shortened;

(4) The first reflecting surface of the thick-wall part adopts an electroplating process, so that the direct bright spots of the LEDs can be covered, the uniformity of the lamp is improved, the light can be reflected to the first light incident surface, and the light efficiency is improved;

(5) The lamp has compact internal space, and the structure can realize the requirements of high uniformity and low cost under the condition that the space of the lamp accommodating cavity is limited.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram illustrating the working principle of embodiment 1 of a uniform light emitting structure according to the present utility model;

FIG. 2 is a schematic diagram of the practical implementation structure of the optical element of embodiment 1;

FIG. 3 is a schematic view of an embodiment of a protrusion;

FIG. 4 is a schematic view of another embodiment of a protrusion;

fig. 5 is a schematic diagram illustrating the working principle of embodiment 1 of the uniform light-emitting structure of the present utility model.

Wherein, 1, an LED light source, 2, an optical element, 3, an upper reflecting surface, 4, a lower reflecting surface, 5, a light emitting surface, 6, a PCB board, 81, a first light incident surface, 82 and a second light incident surface.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

As shown in fig. 1 to 5, the utility model designs a uniform light-emitting structure, which comprises an LED light source 1 and an optical element 2, wherein the LED light source 1 is mounted on a PCB board 6, the optical element 2 comprises a lower reflecting surface 4 and a light-emitting surface 5, the lower reflecting surface 4 is provided with a convex portion, light emitted by the LED light source 1 reaches the convex portion of the lower reflecting surface 4 through reflection and refraction, and the convex portion of the lower reflecting surface 4 diffusely reflects light to the light-emitting surface 5 for refraction and light emission. The convex portion protrudes in a direction approaching the light-emitting surface 5. The convex part is spherical, tooth-shaped or quadrangular pyramid. The convex part breaks the mirror reflection of light, so that the light can be reflected out at multiple angles, and the area which is too bright or too dark can be freely adjusted by adjusting the density and the size of the convex structure, and can be readjusted according to the actual brightness effect.

Example 1:

as shown in fig. 1-2, the uniform light-emitting structure further includes an upper reflecting surface 3 and a first light-incident surface 81, and light emitted by the led light source 1 is reflected by the upper reflecting surface 3 and then refracted by the first light-incident surface 81 to reach the lower reflecting surface 4. The upper reflecting surface 3 is provided with a plating layer. The electroplated layer is made of aluminum or chromium.

The optical element 2 has a gap at a position corresponding to the LED light source 1, then the light emitted by the LDE light source 1 is directly emitted to the upper reflective surface 3, the optical element 2 of this embodiment is disposed beside the upper reflective surface on the first light incident surface 81, the light is reflected to the first light incident surface 8 by the upper reflective surface 3, is refracted by the first light incident surface 8 to reach the lower reflective surface 4, and then is diffusely reflected by the convex part on the second reflective surface 4, finally reaches the light emergent surface 5, the light emergent surface 5 refracts the light, and at the same time, the light can be reflected back to the lower reflective surface 4 for multiple reflections, and the density of the convex part can be adjusted in cooperation with the optical brightness.

The optical element may be a thick-wall piece as shown in fig. 2, four LED lamps may be provided, the lower reflecting surface 4 and the light emitting surface 5 are designed as a whole, and four corresponding upper reflecting surfaces 3, the first light entering surface 81 and the like are provided.

Example 2:

as shown in fig. 5, the uniform light emitting structure further includes a second light incident surface 82, and the light emitted by the led light source 1 is refracted by the second light incident surface 82 and then reaches the light emitting surface 5, and then is reflected by the light emitting surface to the lower reflecting surface 4.

The optical element 2 has no gap at the position corresponding to the LED light source 1, at this time, the second light incident surface 82 of the optical element is close to the LED light source 1 or is flush with the lower emitting surface 4, the light entering the optical element 2 is refracted by the second light incident surface 82 to reach the light emergent surface 5, the light emergent surface 5 refracts and emits light, and at the same time, the light can be reflected back to the lower reflecting surface 4, then diffuse reflection is performed through the convex part on the second reflecting surface 4, and reaches the light emergent surface 5 again, the light emergent surface 5 refracts and emits light, and at the same time, the light can be reflected back to the lower reflecting surface 4 for multiple reflections, and the density of the convex part can be adjusted by matching with the optical brightness.

The optical path diagrams of embodiment 1 and embodiment 2 serve only as illustrations of the main optical paths, and do not fully illustrate all the paths of light.

The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.

Claims (7)

1. The uniform light-emitting structure is characterized by comprising an LED light source (1) and an optical element (2), wherein the optical element (2) comprises a lower reflecting surface (4) and a light-emitting surface (5), the lower reflecting surface (4) is provided with a convex part, light emitted by the LED light source (1) reaches the convex part of the lower reflecting surface (4) through reflection and refraction, and the convex part of the lower reflecting surface (4) diffusely reflects light to the light-emitting surface (5) to reflect light.

2. A uniform light emitting structure according to claim 1, wherein: the convex part protrudes towards the direction close to the light emergent surface (5).

3. A uniform light emitting structure according to claim 1, wherein: the convex part is spherical, tooth-shaped or quadrangular.

4. A uniform light emitting structure according to claim 1, wherein: the uniform light-emitting structure further comprises an upper reflecting surface (3) and a first light-in surface (81), and light emitted by the LED light source (1) is reflected by the upper reflecting surface (3) and then refracted by the first light-in surface (81) to reach the lower reflecting surface (4).

5. A uniform light emitting structure according to claim 4, wherein: the upper reflecting surface (3) is provided with an electroplated layer.

6. A uniform light emitting structure according to claim 5, wherein: the electroplated layer is made of aluminum or chromium.

7. A uniform light emitting structure according to claim 1, wherein: the uniform light-emitting structure further comprises a second light-in surface (82), and light emitted by the LED light source (1) is refracted through the second light-in surface (82) and then reaches the light-out surface (5) and is reflected to the lower reflecting surface (4) through the light-out surface.

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