Horse race luminous efficiency light guide plate and preparation method thereof

Abstract

The invention relates to the technical field of light guide elements, in particular to a horse race lighting effect light guide plate which comprises an injection molding light guide plate, a reflecting film covering and attached to the bottom face of the injection molding light guide plate and a shading film partially covering and attached to the top face of the injection molding light guide plate. The area, located between the periphery of the injection molding light guide plate and the periphery of the shading film, of the injection molding light guide plate is a light emitting area, the outer side face of the injection molding light guide plate is obliquely arranged towards the center direction of the injection molding light guide plate from bottom to top, and the outer side face of the injection molding light guide plate and the top face of the injection molding light guide plate are arranged in a fillet mode. Light is smoothly transited to the corner between the outer side face of the injection molding light guide plate and the bottom face of the injection molding light guide plate and then is dispersed through the reflecting film, so that the phenomenon that a local area of a light emitting area is exploded and brightened due to the fact that a horse race luminous efficiency light source is too close to the light emitting area is effectively improved, the light emitting brightness of the light emitting area is balanced, and the light emitting effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of light guide elements, and in particular to a light guide plate with a horse racing light effect and a preparation method thereof. Background Art

[0002] Light guide plates are mainly made of optical grade acrylic or PC sheets. 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 sheet. These light guide points can guide the light to propagate inside the sheet and evenly diffuse it to the surface of the sheet when needed.

[0003] In order to make the light come out from the periphery of the light guide plate, a reflective film needs to be attached to one side of the light guide plate and a light shielding film that does not cover the periphery of the light guide plate needs to be attached to the other side to form a film-attached light guide plate, so that the periphery of the film-attached light guide plate reflects light through the reflective film. However, the existing light guide plate's running light effect light source is limited by the product structure layout, and the running light effect light source is too close to the peripheral light emitting area of ​​the light guide plate, resulting in a local area of ​​the top edge of the peripheral light emitting area of ​​the light guide plate with a burst point and burst brightness. It is difficult for the peripheral light emitting area of ​​the light guide plate to balance the luminous brightness, affecting the luminous effect. Summary of the invention

[0004] In order to overcome the shortcomings and deficiencies in the prior art, an object of the present invention is to provide a method for preparing a light guide plate with a horse-racing light effect.

[0005] Another object of the present invention is to provide a light guide plate with a horse-racing light effect.

[0006] The purpose of the present invention is achieved by the following technical solution: A method for preparing a light guide plate with a running light effect, comprising the following steps:

[0007] Take the reflective film, injection-molded light guide plate and shading film and stick them together in sequence to form a light guide plate with a running light effect.

[0008] The area of ​​the injection-molded light guide plate between the periphery of the injection-molded light guide plate and the 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 toward the center direction of the injection-molded light guide plate, and a rounded corner is provided between the outer side surface of the injection-molded light guide plate and the top surface of the injection-molded light guide plate;

[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 molding cavity, the outer peripheral surface of the light guide plate molding cavity is inclined from bottom to top toward the center direction, and a chamfer is set between the outer peripheral surface of the light guide plate molding cavity and the top surface of the light guide plate molding cavity; the outer peripheral surface of the light guide plate molding cavity is treated with fine lines.

[0011] Preferably, the following step is also included: placing the running light effect light guide plate in a light guide plate bubble removal device for hot pressing to remove bubbles between the periphery of the injection-molded light guide plate and the reflective film.

[0012] Another object of the present invention is achieved through the following technical scheme: a light guide plate with a running light effect, comprising 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 shading film partially covering and attached to the top surface of the injection molded light guide plate, the area of ​​the injection molded light guide plate between the outer periphery of the injection molded light guide plate and the outer periphery of the shading film is the light emitting area, the outer side surface of the injection molded light guide plate is inclined from bottom to top toward the center direction of the injection molded light guide plate, and the chamfer between the outer side surface of the injection molded light guide plate and the top surface of the injection molded light guide plate is set.

[0013] Preferably, the outer side surface of the injection-molded light guide plate is distributed with a sun-ray fine-grain structure.

[0014] Preferably, light guide dots are evenly distributed on a side of the light emitting area of ​​the injection-molded light guide plate that is in contact with the reflective film.

[0015] Preferably, an avoidance installation groove is opened in the middle of the injection molded light guide plate, and a plurality of light entrance holes are distributed along the periphery of the avoidance installation groove, and the inner side surfaces of the light entrance holes are inclined from bottom to top toward the center direction of the light entrance holes.

[0016] Preferably, the inner side surface of the avoidance installation groove has an injection nozzle position.

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

[0018] Preferably, the shading film is a black and white single-sided adhesive, and the white side of the shading film is attached 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 emitting area of ​​the injection-molded light guide plate is annular.

[0020] The beneficial effects of the present invention are: a method for preparing a light guide plate with a horse-running light effect, which adopts a reflective film, an injection-molded light guide plate and a shading film and sequentially bonds them together to form a light guide plate with a horse-running light effect, wherein the area between the outer periphery of the injection-molded light guide plate and the outer periphery of the shading film is the light emitting area; the outer side surface of the injection-molded light guide plate is inclined from bottom to top toward the center direction of the injection-molded light guide plate, and a chamfer is provided between the outer side surface of the injection-molded light guide plate and the top surface of the injection-molded light guide plate; the injection-molded light guide plate is integrally injection-molded by an injection mold, and has the advantages of simple operation, convenient control, high production efficiency, low production cost, and can be used for large-scale production.

[0021] The horse-racing light guide plate of the present invention adopts 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 shading film partially covering and attached to the top surface of the injection molded light guide plate. The area of ​​the injection molded light guide plate between the periphery of the injection molded light guide plate and the periphery of the shading film is the light emitting area. The outer side surface of the injection molded light guide plate is inclined from bottom to top toward the center direction of the injection molded light guide plate, and the chamfered corners between the outer side surface of the injection molded light guide plate and the top surface of the injection molded light guide plate are set to make the light smoothly transition to the corner between the outer side surface of the injection molded light guide plate and the bottom surface of the injection molded light guide plate, and then dispersed through the reflective film, thereby effectively improving the phenomenon of burst points and burst brightness in local areas of the light emitting area due to the fact that the light source of the horse-racing light effect is too close to the light emitting area, which is more conducive to balancing the luminous brightness of the light emitting area and improving the luminous effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

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

[0024] Figure 3 is a schematic structural diagram of the injection-molded light guide plate of the present invention;

[0025] Figure 4 yes Figure 3 Cross-sectional view of AA in the middle;

[0026] Figure 5 yes Figure 4 A magnified schematic diagram of B;

[0027] Figure 6 yes Figure 4 A magnified schematic diagram of middle C;

[0028] Figure 7 is a product schematic diagram of the light guide network point of the present invention;

[0029] Figure 8 is a product schematic diagram of the sun-sun fine line structure of the present invention;

[0030] Fig. 9 is a brightness test simulation diagram of Example 1;

[0031] Fig.10 This is a brightness test simulation diagram of Example 1.

[0032] The accompanying drawings are marked as follows: 1. injection-molded light guide plate; 2. reflective film; 3. shading film; 4. light exit area; 5. sun-drying fine grain structure; 6. light guide grid point; 7. avoidance installation groove; 8. light entrance hole; 9. injection molding water inlet position. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0034] Example 1

[0035] like Figure 1-8 As shown, a method for preparing a light guide plate with a horse-racing light effect comprises the following steps:

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

[0037] The area of ​​the injection molded light guide plate 1 between the periphery of the injection molded light guide plate 1 and the periphery of the light shielding film 3 is the light exit area 4; the outer side surface of the injection molded light guide plate 1 is inclined from bottom to top toward the center direction of the injection molded light guide plate 1, and the outer side surface of the injection molded light guide plate 1 and the top surface of the injection molded light guide plate 1 are chamfered;

[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 molding cavity, the outer peripheral surface of the light guide plate molding cavity is inclined from bottom to top toward the center direction, and a chamfer is set between the outer peripheral surface of the light guide plate molding cavity and the top surface of the light guide plate molding cavity; the outer peripheral surface of the light guide plate molding cavity is treated with fine lines.

[0040] Furthermore, the method also includes the following steps: placing the running light effect light guide plate in a light guide plate bubble removal device for hot pressing to remove bubbles between the periphery of the injection-molded light guide plate 1 and the reflective film 2. Specifically, the light guide plate bubble removal device adopts a frame and a driving cylinder arranged on the top of the frame, and a hot pressing jig is arranged between the frame and the driving cylinder, and the hot pressing jig 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 driving 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 protrudes with a plurality of first pressure rings arranged at intervals, and the top of the lower template protrudes with a plurality of second pressure rings arranged at intervals and corresponding to the first pressure rings one by one; when in use, the heating plate provides heat for the upper template, and the horse-racing light effect light guide plate is placed on the lower template, and then the driving cylinder drives the fixed seat to drive the lower template to press down, so that the first pressure ring and the second pressure ring cooperate to press the light emitting area 4 of the horse-racing light effect light guide plate, and under the action of hot pressing, the bubbles between the periphery of the injection-molded light guide plate 1 and the reflective film 2 can be discharged, so as to avoid the light emitting area 4 of the horse-racing light effect light guide plate being affected by bubbles and causing dark spots when emitting light, thereby improving the luminous effect of the periphery of the horse-racing light effect light guide plate.

[0041] like Figure 1-8As shown, a light guide plate with a horse-racing light effect comprises an injection molded light guide plate 1, a reflective film 2 covering and attached to the bottom surface of the injection molded light guide plate 1, and a shading film 3 partially covering and attached to the top surface of the injection molded light guide plate 1, the area of ​​the injection molded light guide plate 1 between the outer periphery of the injection molded light guide plate 1 and the outer periphery of the shading film 3 is a light emitting area 4, the outer side surface of the injection molded light guide plate 1 is inclined from bottom to top toward the center direction of the injection molded light guide plate 1, and the outer side surface of the injection molded light guide plate 1 and the top surface of the injection molded light guide plate 1 are chamfered.

[0042] The horse-racing light effect light guide plate adopts an injection molded light guide plate 1, a reflective film 2 covering and attached to the bottom surface of the injection molded light guide plate 1, and a shading film 3 partially covering and attached to the top surface of the injection molded light guide plate 1. The area of ​​the injection molded light guide plate 1 between the outer periphery of the injection molded light guide plate 1 and the outer periphery of the shading film 3 is the light emitting area 4. The outer side surface of the injection molded light guide plate 1 is inclined from bottom to top toward the center direction of the injection molded light guide plate 1, and the chamfered corner between the outer side surface of the injection molded light guide plate 1 and the top surface of the injection molded light guide plate 1 is set, so that the light smoothly transitions to the corner between the outer side surface of the injection molded light guide plate 1 and the bottom surface of the injection molded light guide plate 1, and then dispersed through the reflective film 2, thereby effectively improving the phenomenon of burst points and brightness in local areas of the light emitting area 4 caused by the horse-racing light effect light source being too close to the light emitting area 4, and is more conducive to balancing the luminous brightness of the light emitting area 4, improving the luminous effect, and at the same time helping to reduce the loss of light reflection.

[0043] Furthermore, the outer side surface of the injection-molded light guide plate 1 is distributed with a sun-drying fine-grain structure 5, which further disperses the light and reduces the edge brightening problem, and is more conducive to balancing the luminous brightness of the light-emitting area 4 and improving the luminous effect.

[0044] Furthermore, the light emitting area 4 of the injection molded light guide plate 1 is evenly distributed with light guide dots 6 on one side thereof that is attached to the reflective film 2. After light enters the injection molded light guide plate 1, it passes through the reflective film 2, and after the light is reflected to the light emitting area 4, it is diffusely reflected by the evenly distributed light guide dots 6, and the light is reflected to the top surface of the light emitting area 4 to achieve a uniform light emitting effect.

[0045] Furthermore, an avoidance installation groove 7 is opened in the middle of the injection-molded light guide plate 1, and a plurality of light entrance holes 8 are distributed along the periphery of the avoidance installation groove 7. The inner side surfaces of the light entrance holes 8 are inclined from bottom to top toward the center direction of the light entrance holes 8, thereby increasing the amount of light entering the injection-molded light guide plate 1, thereby improving the luminous brightness, improving the light utilization rate, and avoiding increasing the power of the light source and increasing energy consumption.

[0046] Furthermore, the inner side of the avoidance installation groove 7 has an injection nozzle position 9, which directly avoids the injection nozzle molding on the outer side of the injection-molded light guide plate 1, thereby avoiding the problem of explosive spots and bright spots at specific positions on the outer side of the injection-molded light guide plate 1.

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

[0048] Furthermore, the shading film 3 is a black and white single-sided adhesive, the white side of the shading film 3 is attached to the top surface of the injection-molded light guide plate 1, the black side of the shading film 3 is conducive to shading, and the white side of the shading film 3 is conducive to 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 horse-racing light effect comprises 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 shading film partially covering and attached to the top surface of the injection-molded light guide plate. The area of ​​the injection-molded light guide plate between the outer periphery of the injection-molded light guide plate and the outer periphery of the shading film is a light emitting area. The outer side surface of the injection-molded light guide plate is vertically arranged, and the corner between the outer side surface 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 surface of the injection-molded light guide plate is smoothly arranged.

[0052] Performance Test:

[0053] The brightness of Example 1 and Comparative Example 1 were tested respectively. The test results are as follows: Figure 9-10 As shown; it can be seen from the test results that: the light emitting area of ​​Example 1 emits light more evenly, with a uniformity of about 80%; while the light emitting area of ​​Comparative Example 1 has a sudden bright spot phenomenon in a local area of ​​the top edge, and the uniformity is only about 40%.

[0054] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the protection scope of the present invention.

Claims

1. A method for preparing a light guide plate with a horse-racing light effect, characterized in that: The steps include: Take the reflective film, injection-molded light guide plate and shading film and stick them together in sequence to form a light guide plate with a running light effect. The area of ​​the injection-molded light guide plate between the periphery of the injection-molded light guide plate and the 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 toward the center direction of the injection-molded light guide plate, and a rounded corner is provided between the outer side surface of the injection-molded light guide plate and the top surface of the injection-molded light guide plate; The injection-molded light guide plate is integrally injection-molded by an injection mold.

2. The method for preparing a light guide plate with a horse-racing light effect according to claim 1, characterized in that: The injection mold has a light guide plate molding cavity, the outer peripheral surface of the light guide plate molding cavity is inclined from bottom to top toward the center direction, and a chamfer is set between the outer peripheral surface of the light guide plate molding cavity and the top surface of the light guide plate molding cavity; the outer peripheral surface of the light guide plate molding cavity is treated with fine lines.

3. The method for preparing a light guide plate with a horse-racing light effect according to claim 1, characterized in that: The method also includes the following steps: placing the running light effect light guide plate in a light guide plate bubble removal device and hot pressing the light guide plate to remove bubbles between the periphery of the injection-molded light guide plate and the reflective film.

4. A light guide plate with a horse-racing light effect, characterized in that: It includes an injection molded light guide plate, a reflective film covering and adhered to the bottom surface of the injection molded light guide plate, and a shading film partially covering and adhered to the top surface of the injection molded light guide plate. The area of ​​the injection molded light guide plate between the outer periphery of the injection molded light guide plate and the outer periphery of the shading film is a light emitting area. The outer side surface of the injection molded light guide plate is inclined from bottom to top toward the center direction of the injection molded light guide plate. The outer side surface of the injection molded light guide plate and the top surface of the injection molded light guide plate are chamfered.

5. The light guide plate with a running light effect according to claim 4, characterized in that: The outer side surface of the injection-molded light guide plate is distributed with a fine-grain structure.

6. The light guide plate with a running light effect according to claim 4, characterized in that: The light-emitting area of ​​the injection-molded light guide plate has light-guiding dots evenly distributed on one side thereof that is in contact with the reflective film.

7. The light guide plate with a running light effect according to claim 4, characterized in that: An avoidance installation groove is opened in the middle of the injection molded light guide plate, and a plurality of light entrance holes are distributed along the periphery of the avoidance installation groove. The inner side surfaces of the light entrance holes are inclined from bottom to top toward the center direction of the light entrance holes.

8. The light guide plate with a running light effect according to claim 7, characterized in that: The inner side surface of the avoidance installation groove is provided with an injection nozzle position.

9. The light guide plate with a running light effect according to claim 4, characterized in that: The reflective film is an optical double-sided adhesive.

10. The light guide plate with a running light effect according to claim 4, characterized in that: The shading film is a black and white single-sided adhesive, and the white side of the shading film is attached to the top surface of the injection-molded light guide plate.

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