WO2020228109A1

WO2020228109A1 - Integrated lens of led display device and weather fastness treatment method therefor

Info

Publication number: WO2020228109A1
Application number: PCT/CN2019/094323
Authority: WO
Inventors: 周旭
Original assignee: 深圳市大族元亨光电股份有限公司
Priority date: 2019-05-10
Filing date: 2019-07-02
Publication date: 2020-11-19
Also published as: CN111915994A

Abstract

An integrated lens of an LED display device and a weather fastness treatment method therefor, the device comprising: a surface cover (1), an integrated optical device (2), a first rubber ring (3), a PCB circuit board (4), a fixed base (5) and a base rubber ring (6); the surface cover (1) covers the surface of the integrated optical device (2), the PCB circuit board (4) is clamped in the integrated optical device (2), the base rubber ring (6) is sleeved on the peripheral surface of the fixed base (5), and the integrated optical device (2) is connected to the fixed base (5) and is sealedly fixed by means of the first rubber ring (3). A weather fastness treatment method for an LED display device. The optical device is designed to be integrated, and an auxiliary support described in the existing technology is no longer used, which eliminates the process of ultrasonic welding or screw fastening, and can save a large amount of time during production and assembly.

Description

Integrated lens of LED display device and weather resistance processing method thereof

Technical field

The invention belongs to the technical field of display devices, and specifically relates to an integrated lens of an LED display device and a weather resistance processing method thereof.

Background technique

In the current products that contain LED lenses, the lens, lens holder and front panel are independent and separate structures, making the waterproof performance of the entire module generally poor, requiring manual installation of the lens, the lens and the lens holder need to be ultrasonically welded, and the LED light board needs Glue processing, and sodium ions and chloride ions in the air in coastal areas will penetrate the waterproof glue and corrode the LED lights. Ultraviolet rays in the sun will cause the plastic to age, discolor, become brittle, and easily break; on the other hand, due to the lens, lens holder and front The independent structure of the panels will cause multiple errors in assembly.

Summary of the invention

In order to overcome the shortcomings of the prior art, the present invention provides an integrated lens for an LED display device, which is simple to install and has a waterproof function.

Another object of the present invention is to provide a weather resistance processing method for the integrated lens of an LED display device.

The technical solution adopted by the present invention is:

An integrated lens for an LED display device, which includes a face mask, an integrated optical device, a first rubber ring, a PCB circuit board, a fixed base and a base rubber ring; the mask covers the surface of the integrated optical device, and the PCB circuit board It is clamped in the integrated optical device, the base rubber ring is sleeved on the outer peripheral surface of the fixed base, and the integrated optical device is connected with the fixed base and is sealed and fixed by the first rubber ring.

Preferably, a number of LED optical lenses are uniformly distributed on the integrated optical device for improving the brightness of the LED display device.

Preferably, a plurality of LED patch lights are uniformly distributed on the PCB circuit board, and the LED patch lights and the LED optical lenses are arranged in one-to-one correspondence.

Preferably, the mask is provided with a plurality of holes corresponding to the LED optical lens, and the LED optical lens passes through the hole.

Preferably, the LED optical lens and the integrated optical device are integrally formed.

The frame of the mask and the integrated optical device adopts a concave-convex structure to eliminate the assembling marks between the modules.

A weather resistance processing method for an integrated lens of an LED display device is used for processing the above weather resistance LED display device, specifically:

Several LED optical lenses uniformly distributed on the integrated optical device are sequentially subjected to degreasing treatment, pre-roughening treatment, roughening treatment, neutralization treatment and modification treatment.

Preferably, the oil removal treatment specifically includes: using a sulfuric acid solution with a concentration of 0.1-0.5 mol/L to pickle the surface of the LED optical lens for 1-3 minutes.

Preferably, the pre-roughening treatment specifically includes: using a mixture of potassium permanganate and sodium hydroxide to pre-roughen the degreasing LED optical lens for 1-3 minutes.

Preferably, the roughening treatment is specifically: using a mixed solution of chromium trioxide and sulfuric acid to soak the surface of the LED optical lens for 10-15 minutes.

Preferably, the specific process of the modification treatment is:

Mix isopropanol, ammonia, tetraethyl orthosilicate and water and heat to 55-65°C; among them, isopropanol accounts for 60%-80%, ammonia accounts for 5% to 7%, and tetraethyl orthosilicate Ester accounts for 2%-4%, water accounts for 10%-15%;

Put the LED optical lens in the mixed solution for 0.5-1h;

Add silane coupling agent to the mixed solution containing LED optical lens for 0.5-1h;

Take out the LED optical lens and dry it for 4.5-5.5h at a temperature of 75-85°C.

Compared with the prior art, the present invention designs the optical device to be integrated, no longer uses the auxiliary bracket in the prior art, omits the process of ultrasonic welding or screw fastening, and can save a lot of time during production and assembly.

Description of the drawings

FIG. 1 is an exploded view of an integrated lens of an LED display device according to Embodiment 1 of the present invention;

2 is a schematic diagram of the structure of a face mask in an integrated lens of an LED display device according to Embodiment 1 of the present invention;

3 is a schematic diagram of the structure of a PCB circuit board in an integrated lens of an LED display device according to Embodiment 1 of the present invention;

4 is a partial enlarged view of the LED optical lens on the integrated optical device in the integrated lens of the LED display device according to Embodiment 1 of the present invention;

5 is a schematic structural diagram of an integrated lens of an LED display device according to Embodiment 1 of the present invention;

FIG. 6a is an exploded view of an LED optical lens in an integrated lens of an LED display device according to Embodiment 1 of the present invention;

6b is a front view of an RGBW four-in-one patch lamp in an integrated lens of an LED display device according to Embodiment 1 of the present invention;

6c is a top view of an RGBW four-in-one patch lamp in an integrated lens of an LED display device according to Embodiment 1 of the present invention;

6d is a bottom view of an RGBW four-in-one patch lamp in an integrated lens of an LED display device according to Embodiment 1 of the present invention;

6e is a schematic structural diagram of an RGBW four-in-one patch lamp in an integrated lens of an LED display device according to Embodiment 1 of the present invention;

FIG. 7 is a flowchart of a method for processing weather resistance of an integrated lens of an LED display device according to Embodiment 2 of the present invention.

The reference signs are as follows:

1-mask, 2-integrated optics, 3-first rubber ring, 4-PCB circuit board, 5-fixed base, 6-base rubber ring, 11-hole, 21- LED optical lens, 41-LED patch light, 211-RGBW four-in-one patch light, 212-lens.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

Embodiment 1 of the present invention provides an integrated lens of an LED display device, as shown in FIGS. 1 and 5, which includes a mask 1, an integrated optical device 2, a first rubber ring 3, a PCB circuit board 4, a fixed base 5, and a base Seat rubber ring 6; The mask 1 covers the surface of the integrated optical device 2, the PCB circuit board 4 is clamped in the integrated optical device 2, and the base rubber ring 6 is sleeved on the outer peripheral surface of the fixed base 5, so The integrated optical device 2 is connected to the fixed base 5 and sealed and fixed by the first rubber ring 3;

In this way, the display contrast of the integrated optical device 2 can be improved by the mask 1, and the light-emitting surface of the integrated optical device 2 can be protected; the integrated optical device 2 is connected to the fixed base 5 and sealed and fixed by the first rubber ring 3, so that the LED The display device has modular protection and shock absorption.

As shown in FIG. 4, a number of LED optical lenses 21 are uniformly distributed on the integrated optical device 2 to improve the brightness of the LED display device.

As shown in FIG. 6a, the LED optical lens 21 includes an RGBW four-in-one patch lamp 211 and a lens 212, which reduces the impact of RGB color mixing on white light, and reduces the large power consumption due to RGB color mixing white light, thereby achieving further energy saving;

The structure of the lens 212 is shown in Figures 6b, 6c and 6d, which can improve the color mixing effect through a specific height and angle ratio; and customize the light-emitting surface, the size ratio of the light-incident surface, and the surface curvature of the light-emitting surface, and the electroforming frosted effect of the light-incident surface , To enhance the effective angle of the lens, and improve the brightness of the lens;

In addition, as shown in Figure 6e, considering that the sunlight illuminates the display screen at a downward angle of 10°, in order to reduce the effect of sunlight on the effective light emission of the RGBW four-in-one SMD lamp 211, a reflective boss is customized to let most of the sunlight pass The reflective surface illuminates the PCB circuit board 4, the other part of the original path is reflected to the upper viewing angle area, and a small part is reflected to the effective light-emitting area of the patch lamp to improve the contrast of the display screen.

As shown in FIG. 3, a number of LED patch lights 41 are evenly distributed on the PCB circuit board 4, and the LED patch lights 41 and the LED optical lenses 21 are arranged in one-to-one correspondence.

As shown in FIG. 2, the mask 1 is provided with a plurality of holes 11 corresponding to the LED optical lens 21, and the LED optical lens 21 passes through the hole 11.

In this way, the condensing effect of the LED optical lens 21 solves the problem of insufficient brightness of the LED patch lamp 41. The viewing angle control of the LED optical lens 21 improves the utilization rate of the light source, energy saving and environmental protection, and the LED optical lens 21 and the LED patch lamp 41 are between The light guide rod is equipped with a light emitting part to avoid external light from affecting the display of the light source. The concave-convex design on the surface of the LED optical lens 21 can play a role in light mixing and can prevent external light from reflecting in the same direction;

In addition, the PCB circuit board 4 includes reinforcing ribs separating the lamp beads, which can avoid the interference of light from adjacent lamp beads.

The LED optical lens 21 and the integrated optical device 2 are integrally formed;

In this way, the problems of waterproofing, salt spray corrosion and ultraviolet radiation aging are fundamentally solved through integral molding; no waterproof glue is required, no LED optical lens is manually installed, no ultrasonic welding lens is needed, which reduces production costs and avoids Installation error.

In addition, as shown in Figs. 2-3, the frame of the mask 1 and the integrated optical device 2 adopts a concave-convex structure, which can eliminate the assembly traces between the modules and make the entire LED display device integrated.

In this embodiment, the optical device is designed to be integrated, the auxiliary bracket in the prior art is no longer used, the ultrasonic welding or screw fastening process is omitted, and a lot of time can be saved during production and assembly.

Embodiment 2 of the present invention provides a weather resistance processing method for an integrated lens of an LED display device, which is used to process the display device of Embodiment 1, and specifically includes the following steps, as shown in FIG. 7:

Step 1. Degrease the several LED optical lenses 21 uniformly distributed on the integrated optical device 2, specifically: using a sulfuric acid solution with a concentration of 0.1-0.5 mol/L to pickle the surface of the LED optical lens 21 for 1-3 minutes;

Step 2: Perform pre-roughening treatment on several LED optical lenses 21 evenly distributed on the integrated optical device 2. The pre-roughening treatment is specifically: using a mixture of potassium permanganate and sodium hydroxide to treat the degreasing The LED optical lens 21 is pre-roughened for 1-3 minutes;

Step 3: Perform roughening treatment on several LED optical lenses 21 evenly distributed on the integrated optical device 2, and the roughening treatment is specifically: immersing the surface of the LED optical lens 21 with a mixed solution of chromium trioxide and sulfuric acid for 10-15 minutes;

Step 4: Perform neutralization treatment on several LED optical lenses 21 evenly distributed on the integrated optical device 2. The neutralization treatment specifically includes: neutralization treatment with sodium bicarbonate solution;

Step 5: Perform the modification process on several LED optical lenses 21 evenly distributed on the integrated optical device 2, and the specific process of the modification process is:

Step 51: Mix the configured isopropanol, ammonia, tetraethyl orthosilicate and water and heat to 55-65°C; among them, isopropanol accounts for 60%-80%, ammonia accounts for 5% to 7%, and orthosilica Tetraethyl acid occupies 2%-4%, water occupies 10%-15%;

Step 52: Place the LED optical lens 21 in the mixed solution of step 51 for 0.5-1 h;

Step 53, adding a silane coupling agent to the mixed solution containing the LED optical lens 21 in the step 52 to react for 0.5-1 h;

Step 54: Take out the LED optical lens 21 and dry it for 4.5-5.5h at a temperature of 75-85°C;

The surface of the modified LED optical lens 21 has a silicon dioxide nano layer, which can block more than 95% of ultraviolet rays, effectively solving the aging problem of plastics in an ultraviolet environment.

The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or changes within the technical scope disclosed by the present invention. All replacements shall be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

An integrated lens for an LED display device, which is characterized in that it includes a mask (1), an integrated optical device (2), a first rubber ring (3), a PCB circuit board (4), a fixed base (5) and a base Seat rubber ring (6); the face mask (1) covers the surface of the integrated optical device (2), the PCB circuit board (4) is clamped in the integrated optical device (2), and the base rubber ring (6) ) Is sleeved on the outer peripheral surface of the fixed base (5), and the integrated optical device (2) is connected with the fixed base (5) and sealed and fixed by the first rubber ring (3).
The integrated lens of an LED display device according to claim 1, characterized in that a number of LED optical lenses (21) are uniformly distributed on the integrated optical device (2) for improving the brightness of the LED display device.
The integrated lens of an LED display device according to claim 2, wherein a plurality of LED patch lamps (41) are evenly distributed on the PCB circuit board (4), and the LED patch lamps (41) ) And the LED optical lens (21) are arranged in one-to-one correspondence.
The integrated lens of an LED display device according to claim 3, wherein a plurality of holes (11) corresponding to the LED optical lens (21) are provided on the mask (1), and the LED optical lens (21) Pierce the hole (11).
The integrated lens of an LED display device according to claim 4, wherein the LED optical lens (21) and the integrated optical device (2) are integrally formed.
The integrated lens of an LED display device according to claim 5, characterized in that the frame of the mask (1) and the integrated optical device (2) adopts a concave-convex structure to eliminate the assembly traces between the modules.
A method for processing the weather resistance of an integrated lens of an LED display device, characterized in that it is used to process the integrated lens of an LED display device according to any one of claims 1-6, specifically:

Several LED optical lenses (21) uniformly distributed on the integrated optical device (2) are sequentially subjected to degreasing treatment, pre-roughening treatment, roughening treatment, neutralization treatment and modification treatment.
The weather resistance treatment method for the integrated lens of the LED display device according to claim 7, wherein the degreasing treatment is specifically: using a sulfuric acid solution with a concentration of 0.1-0.5 mol/L to pickle the LED optical lens ( 21) Surface 1-3min;

The pre-roughening treatment specifically includes: using a mixture of potassium permanganate and sodium hydroxide to pre-roughen the degreasing LED optical lens (21) for 1-3 minutes.
The method for weather resistance treatment of an integrated lens of an LED display device according to claim 8, wherein the roughening treatment is specifically: immersing the surface of the LED optical lens (21) with a mixed solution of chromium trioxide and sulfuric acid. 15min.
The method for processing the weather resistance of an integrated lens of an LED display device according to any one of claims 6-9, wherein the specific process of the modification treatment is:

Mix isopropanol, ammonia, tetraethyl orthosilicate and water and heat to 55-65°C; among them, isopropanol accounts for 60%-80%, ammonia accounts for 5% to 7%, and tetraethyl orthosilicate Ester accounts for 2%-4%, water accounts for 10%-15%;

Put the LED optical lens (21) in the mixed solution for 0.5-1h;

Add a silane coupling agent to the mixed solution containing the LED optical lens (21) to react for 0.5-1h;

Take out the LED optical lens (21) and dry it for 4.5-5.5h at a temperature of 75-85°C.