A running horse light effect light guide plate and a preparation method thereof

Abstract

The present application relates to the technical field of light guide element, in particular to a running light effect light guide plate, which adopts an injection molding light guide plate, a reflective film covering and adhering to the bottom surface of the injection molding light guide plate, and a light shielding film locally covering and adhering to the top surface of the injection molding light guide plate, the area between the outer periphery of the injection molding light guide plate and the outer periphery of the light shielding film is the light emitting area, the outer side surface of the injection molding light guide plate is arranged to be inclined from bottom to top towards the center of the injection molding light guide plate, and the outer side surface of the injection molding light guide plate and the top surface of the injection molding light guide plate are arranged to be rounded, so that the light is smoothly transitioned to the corner between the outer side surface of the injection molding light guide plate and the bottom surface of the injection molding light guide plate, and then dispersed by the reflective film, thereby effectively improving the burst bright phenomenon of the local area of the light emitting area caused by the light source of the running light effect being too close to the light emitting area, and more conducive to balancing the luminous intensity of the light emitting area and improving the light emitting effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of light guide elements, in particular to a running light effect light guide plate and a preparation method thereof. BACKGROUND

[0002] The light guide plate is mainly made of optical-grade acrylic or PC plate material. These materials have the characteristics of high transparency, high refractive index and no light absorption. Through precise laser engraving, V-shaped cross grid engraving or UV screen printing technology, light guide points are formed on the bottom surface of the plate. These light guide points can guide the propagation of light inside the plate and uniformly diffuse it to the surface of the plate when needed.

[0003] To make the light guide plate peripheral light, one side of the light guide plate needs to be attached to a reflective film, and the other side needs to be attached to a light shielding film that does not cover the outer periphery of the light guide plate, forming a film-attached light guide plate, so that the outer periphery of the film-attached light guide plate reflects light. However, the running light effect light source of the existing light guide plate is limited by the product structure layout, and the running light effect light source is set too close to the light guide plate peripheral light area, resulting in a local area of the top edge of the light guide plate peripheral light area having a bright spot, making it difficult for the light guide plate peripheral light area to emit light evenly, affecting the light emitting effect. SUMMARY

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present application is to provide a preparation method of a running light effect light guide plate.

[0005] Another purpose of the present application is to provide a running light effect light guide plate.

[0006] The purpose of the present application is achieved by the following technical scheme: a preparation method of a running light effect light guide plate, comprising the following steps:

[0007] a reflective film, an injection-molded light guide plate and a light shielding film are attached in sequence to form a running light effect light guide plate,

[0008] wherein the area between the outer periphery of the injection-molded light guide plate and the outer periphery of the light shielding film is the light emitting area; the outer side surface of the injection-molded light guide plate is inclined from bottom to top towards the center of the injection-molded light guide plate, and the outer side surface of the injection-molded light guide plate and the top surface of the injection-molded light guide plate are rounded;

[0009] The injection-molded light guide plate is integrally injection-molded by an injection mold.

[0010] Preferably, the injection mold has a light guide plate forming cavity, the outer periphery of the light guide plate forming cavity is inclined from bottom to top towards the center, the outer periphery of the light guide plate forming cavity and the top surface of the light guide plate forming cavity are rounded, and the outer periphery of the light guide plate forming cavity is treated with a fine line.

[0011] Preferably, the method further comprises the step of: placing the running horse light effect light guide plate into a light guide plate bubble exhaust device for hot pressing to exhaust bubbles between the outer periphery of the injection molded light guide plate and the reflective film.

[0012] Another object of the present application is achieved by the following technical solution: a running horse light effect light guide plate, comprising an injection molded light guide plate, a reflective film covering and adhering to the bottom surface of the injection molded light guide plate, and a light shielding film partially covering and adhering to the top surface of the injection molded light guide plate, the area between the outer periphery of the injection molded light guide plate and the outer periphery of the light shielding film is a light exit area, the outer side surface of the injection molded light guide plate is inclined from bottom to top towards the center of the injection molded light guide plate, and the outer side surface of the injection molded light guide plate and the top surface of the injection molded light guide plate are rounded.

[0013] Preferably, the outer side surface of the injection molded light guide plate is distributed with fine lines.

[0014] Preferably, the light exit area of the injection molded light guide plate is uniformly distributed with light guide dots on one side of the reflective film.

[0015] Preferably, the middle part of the injection molded light guide plate is provided with a mounting slot, the injection molded light guide plate is distributed with a plurality of light entrance holes along the outer periphery of the mounting slot, and the inner side surface of the light entrance hole is inclined from bottom to top towards the center of the light entrance hole.

[0016] Preferably, the inner side surface of the mounting slot has an injection molding nozzle position.

[0017] Preferably, the reflective film is an optical double-sided adhesive.

[0018] Preferably, the light shielding film is a black and white single-sided adhesive, and the white side of the light shielding film adheres to the top surface of the injection molded light guide plate.

[0019] Preferably, the outer periphery of the injection molded light guide plate is circular, and the light exit area of the injection molded light guide plate is annular.

[0020] The method for preparing the running horse light effect light guide plate adopts a reflective film, an injection molded light guide plate, and a light shielding film and sequentially adheres them to form a running horse light effect light guide plate, the area between the outer periphery of the injection molded light guide plate and the outer periphery of the light shielding film is a light exit area, the outer side surface of the injection molded light guide plate is inclined from bottom to top towards the center of the injection molded light guide plate, and the outer side surface of the injection molded light guide plate and the top surface of the injection molded light guide plate are rounded.

[0021] The galloping light effect light guide plate of the present application adopts an injection molding light guide plate, a reflective film covering and adhering to the bottom surface of the injection molding light guide plate, and a light shielding film covering and adhering to the top surface of the injection molding light guide plate in part, the area between the outer periphery of the injection molding light guide plate and the outer periphery of the light shielding film is a light emitting area, the outer side surface of the injection molding light guide plate is arranged to be inclined from bottom to top towards the center of the injection molding light guide plate, and the outer side surface of the injection molding light guide plate and the top surface of the injection molding light guide plate are arranged to be rounded, so that the light is smoothly transitioned to the corner between the outer side surface of the injection molding light guide plate and the bottom surface of the injection molding light guide plate, and then dispersed by the reflective film, thereby effectively improving the explosion bright phenomenon of the local area of the light emitting area caused by the galloping light effect light source being too close to the light emitting area, and more conducive to balancing the luminous brightness of the light emitting area and improving the light emitting effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the present application;

[0023] Figure 2 is an exploded schematic diagram of the present application;

[0024] Figure 3 is a structural schematic diagram of the injection molding light guide plate according to the present application;

[0025] Figure 4 is Figure 3 is a sectional view of A-A in FIG. 1;

[0026] Figure 5 is Figure 4 is an enlarged schematic diagram of B in FIG. 1;

[0027] Figure 6 is Figure 4 is an enlarged schematic diagram of C in FIG. 1;

[0028] Figure 7 is a product schematic diagram of the light guide dot according to the present application;

[0029] Figure 8 is a product schematic diagram of the fine line structure according to the present application;

[0030] Figure 9 is a luminance test simulation diagram of Example 1;

[0031] Figure 10 is a luminance test simulation diagram of Comparative Example 1.

[0032] The reference signs are: 1, injection molding light guide plate; 2, reflective film; 3, light shielding film; 4, light emitting area; 5, fine line structure; 6, light guide dot; 7, installation avoiding groove; 8, light inlet hole; 9, injection molding water inlet position. DETAILED DESCRIPTION

[0033] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0034] Example 1

[0035] like Figures 1-8 As shown, a method for preparing a light guide plate with a "running horse" light effect includes the following steps:

[0036] Take reflective film 2, injection-molded light guide plate 1, and light-shielding film 3, and attach them sequentially to form a light guide plate with a "running horse" light effect.

[0037] The area between the outer periphery of the injection-molded light guide plate 1 and the outer periphery of the light-shielding film 3 is the light-emitting area 4; the outer side of the injection-molded light guide plate 1 is inclined from bottom to top towards the center of the injection-molded light guide plate 1, and the outer side of the injection-molded light guide plate 1 and the top surface of the injection-molded light guide plate 1 are rounded.

[0038] The injection-molded light guide plate 1 is integrally injection molded by an injection mold.

[0039] Furthermore, the injection mold has a light guide plate forming cavity, the outer peripheral surface of the light guide plate forming cavity is inclined from bottom to top towards the center, and the outer peripheral surface of the light guide plate forming cavity and the top surface of the light guide plate forming cavity are rounded; the outer peripheral surface of the light guide plate forming cavity is treated with fine texture.

[0040] Furthermore, the process also includes the following steps: placing the light guide plate with a running light effect in a light guide plate bubble removal device and hot-pressing it to remove the bubbles between the outer periphery of the injection-molded light guide plate 1 and the reflective film 2. Specifically, the bubble removal device for the light guide plate adopts a frame and a drive cylinder set on the top of the frame. A hot press fixture is set between the frame and the drive cylinder. The hot press fixture includes a base connected to the frame, a lower template connected to the top of the base, a fixed seat connected to the output end of the drive cylinder, a heating plate connected to the bottom of the fixed seat, and an upper template connected to the bottom of the heating plate. The bottom of the upper template has multiple spaced first pressure rings protruding from it, and the top of the lower template has multiple spaced second pressure rings corresponding to the first pressure rings. In use, the heating plate heats the upper template, the running light effect light guide plate is placed on the lower template, and then the drive cylinder drives the fixed seat to press down the lower template, so that the first pressure rings and the second pressure rings cooperate to press the light emission area 4 of the running light effect light guide plate. Under the action of hot pressing, the bubbles between the outer periphery of the injection molded light guide plate 1 and the reflective film 2 can be discharged, avoiding the presence of dark spots when the light emission area 4 of the running light effect light guide plate is affected by bubbles, thus improving the light emission effect of the outer periphery of the running light effect light guide plate.

[0041] like Figures 1-8As shown, a running horse light effect light guide plate, including injection light guide plate 1, cover and adhere to the bottom of the injection light guide plate 1 reflective film 2, and local cover and adhere to the top of the injection light guide plate 1 light shielding film 3, the injection light guide plate 1 is located between the outer periphery of the injection light guide plate 1 and the outer periphery of the light shielding film 3 area is light emitting area 4, the outer side of the injection light guide plate 1 is inclined from bottom to top to the center direction of the injection light guide plate 1, the outer side of the injection light guide plate 1 and the top of the injection light guide plate 1 between the fillet setting.

[0042] The running horse light effect light guide plate, using injection light guide plate 1, cover and adhere to the bottom of the injection light guide plate 1 reflective film 2, and local cover and adhere to the top of the injection light guide plate 1 light shielding film 3, the injection light guide plate 1 is located between the outer periphery of the injection light guide plate 1 and the outer periphery of the light shielding film 3 area is light emitting area 4, the outer side of the injection light guide plate 1 is inclined from bottom to top to the center direction of the injection light guide plate 1, and the outer side of the injection light guide plate 1 and the top of the injection light guide plate 1 between the fillet setting, make the light smooth transition to the corner between the outer side of the injection light guide plate 1 and the bottom of the injection light guide plate 1, and then dispersed by the reflective film 2, thereby effectively improving the local area of the light emitting area 4 due to the running horse light effect light source distance light emitting area 4 too close to the explosion point of the explosion phenomenon, more conducive to the balanced light emitting area 4 luminance, improve the light emitting effect, while helping to reduce the loss of light reflection.

[0043] Further, the outer side of the injection light guide plate 1 is distributed with fine lines structure 5, further dispersing light, fading edge bright problem, more conducive to the balanced light emitting area 4 luminance, improve the light emitting effect.

[0044] Further, the injection light guide plate 1 of the light emitting area 4 adheres to the one side of the reflective film 2 is uniformly distributed with light guide dot 6. Light into the injection light guide plate 1 through the reflective film 2, the light reflected to the light emitting area 4, through the uniform distribution of light guide dot 6 for diffuse reflection of light to the top of the light emitting area 4 to achieve uniform light effect.

[0045] Further, the injection light guide plate 1 of the middle part is provided with a avoiding installation slot 7, the injection light guide plate 1 along the outer periphery of the avoiding installation slot 7 is distributed with a plurality of light inlet hole 8, the inner side of the light inlet hole 8 is inclined from bottom to top to the center direction of the light inlet hole 8, increase the light quantity of the injection light guide plate 1, thereby improving the luminance, improve the utilization rate of light, avoid to increase the power of the light source and increase the energy consumption.

[0046] Further, the inner side of the avoiding installation slot 7 has injection sprue position 9, directly avoiding the injection sprue of the outer side of the injection light guide plate 1, avoiding the existence of specific position of the injection light guide plate 1 of the outer side of the injection light guide plate 1.

[0047] Furthermore, the reflective film 2 is an optical double-sided adhesive, which helps to reduce the loss of light reflection.

[0048] Furthermore, the light-shielding film 3 is a black and white single-sided adhesive. The white side of the light-shielding film 3 is attached to the top surface of the injection-molded light guide plate 1. The black side of the light-shielding film 3 is beneficial for blocking light, and the white side of the light-shielding film 3 is beneficial for reducing the loss of light reflection.

[0049] Furthermore, the outer periphery of the injection-molded light guide plate 1 is circular, and the light-emitting area 4 of the injection-molded light guide plate 1 is annular.

[0050] Comparative Example 1

[0051] A light guide plate with a running light effect includes an injection-molded light guide plate, a reflective film covering and attached to the bottom surface of the injection-molded light guide plate, and a light-shielding film partially covering and attached to the top surface of the injection-molded light guide plate. The area between the outer periphery of the injection-molded light guide plate and the outer periphery of the light-shielding film is the light-emitting area. The outer side of the injection-molded light guide plate is vertically arranged, and the corner between the outer side of the injection-molded light guide plate and the top surface of the injection-molded light guide plate is a right angle. The outer side of the injection-molded light guide plate is smooth.

[0052] Performance testing:

[0053] Brightness tests were conducted on Example 1 and Comparative Example 1 respectively, and the test results are as follows: Figures 9-10 As shown in the test results, the light emission area of ​​Example 1 is more uniform, with a uniformity of about 80%; while the light emission area of ​​Comparative Example 1 has a local burst of brightness at the top edge, with a uniformity of only about 40%.

[0054] The above embodiments are preferred implementations of the present invention. In addition, the present invention can be implemented in other ways. Any obvious substitutions without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A method for preparing a light guide plate with a running horse light effect, characterized in that, It comprises the following steps: Take the reflective film, injection light guide plate and light shielding film and stick them in order to form a running light effect light guide plate, Wherein, the area between the outer periphery of the injection light guide plate and the outer periphery of the light shielding film is the light emitting area; the outer side surface of the injection light guide plate is inclined from bottom to top to the center direction of the injection light guide plate, and the outer side surface of the injection light guide plate and the top surface of the injection light guide plate are rounded cornered; The injection light guide plate is integrally injection molded by an injection mold; The injection mold has a light guide plate forming cavity, the outer peripheral surface of the light guide plate forming cavity is inclined from bottom to top to the center direction, the outer peripheral surface of the light guide plate forming cavity and the top surface of the light guide plate forming cavity are rounded cornered; the outer peripheral surface of the light guide plate forming cavity is treated with a fine line; It also comprises the following steps: placing the running light effect light guide plate in a light guide plate bubble exhausting device and hot pressing to exhaust the bubbles between the outer periphery of the injection light guide plate and the reflective film; The running light effect light guide plate comprises an injection light guide plate, a reflective film covering and adhering to the bottom surface of the injection light guide plate, and a light shielding film partially covering and adhering to the top surface of the injection light guide plate, the area between the outer periphery of the injection light guide plate and the outer periphery of the light shielding film is the light emitting area, the outer side surface of the injection light guide plate is inclined from bottom to top to the center direction of the injection light guide plate, and the outer side surface of the injection light guide plate and the top surface of the injection light guide plate are rounded cornered; The outer side surface of the injection light guide plate is distributed with a fine line structure; The light emitting area of the injection light guide plate is uniformly distributed with light guide dots on the side adhering to the reflective film; The middle part of the injection light guide plate is provided with an installation avoiding slot, the injection light guide plate is distributed with a plurality of light inlet holes along the outer periphery of the installation avoiding slot, and the inner side surface of the light inlet hole is inclined from bottom to top to the center direction of the light inlet hole; The inner side surface of the installation avoiding slot has an injection sprue position.

2. The method for preparing a running horse light effect light guide plate according to claim 1, characterized in that: The reflective film is optical double-sided adhesive tape.

3. The method of claim 1, wherein the method further comprises: coating the light guide plate with a reflective material. The light shielding film is black and white single-sided adhesive tape, and the white side of the light shielding film adheres to the top surface of the injection light guide plate.

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