TOP series LED support structure, lamp bead and display screen

Abstract

The utility model relates to the technical field of LED display screens, and aims to solve the technical problem that the light emitting utilization rate of lamp beads is low. In order to solve the technical problem, the utility model provides the TOP series LED support structure, the lamp bead and the display screen. The middle of the bracket main body is provided with a mounting cavity for mounting a lamp bead; the mounting cavity comprises a first inner wall, a second inner wall, a third inner wall and a fourth inner wall which are arranged in the circumferential direction; wherein the first inner wall and the third inner wall are symmetrical in the X direction, and the second inner wall and the fourth inner wall are symmetrical in the Y direction; the X direction, the Y direction and the Z direction form a three-dimensional coordinate; the included angle between the second inner wall and the first plane is smaller than that between the fourth inner wall and the first plane, and the first plane is the plane where the Y direction and the Z direction are located. The included angle between the first inner wall and the first plane and the included angle between the third inner wall and the first plane are both larger than the included angle between the fourth inner wall and the first plane. The utility model improves the utilization rate of light energy.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display screens, in particular to a TOP series LED support structure and a display screen for improving light utilization. Background Art

[0002] LED outdoor screens have the advantages of high light source brightness and strong environmental adaptability, and are widely used in stage screens, advertising screens and other fields, with a huge market scale. However, existing LED outdoor screens still have some defects: light energy is wasted, which greatly reduces the light utilization rate and brightness of the lamp beads. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the above-mentioned problems existing in the prior art.

[0004] In order to solve the above technical problems, the utility model provides a TOP series LED bracket structure, including:

[0005] The bracket body has an installation chamber in the middle for installing the lamp beads; the installation chamber includes a first inner wall, a second inner wall, a third inner wall and a fourth inner wall arranged along the circumferential direction; wherein the first inner wall and the third inner wall are symmetrical along the X direction, and the second inner wall and the fourth inner wall are symmetrical along the Y direction; the X direction, the Y direction and the Z direction constitute a three-dimensional coordinate;

[0006] The angle between the second inner wall and the first plane is smaller than the angle between the fourth inner wall and the first plane, and the first plane is the plane where the Y direction and the Z direction are located; the angle between the first inner wall and the first plane and the angle between the third inner wall and the first plane are both larger than the angle between the fourth inner wall and the first plane.

[0007] In one embodiment of the present invention, the angle between the second inner wall and the first plane is 5°-10°.

[0008] In one embodiment of the present invention, the angle between the fourth inner wall and the first plane is 30°-40°.

[0009] In one embodiment of the present invention, the included angle between the first inner wall and the first plane and the included angle between the third inner wall and the first plane are 20° to 30°.

[0010] In one embodiment of the present invention, the surface roughness of the first inner wall, the second inner wall, the third inner wall and the fourth inner wall is 0.6-0.8 um.

[0011] The utility model also provides a TOP series lamp bead, comprising: the TOP series LED bracket structure in any of the above embodiments;

[0012] The chip assembly is arranged in the TOP series LED bracket structure; the chip assembly includes a red light chip, a green light chip and a blue light chip;

[0013] Pads, chip components are connected to the pads.

[0014] In one embodiment of the present invention, the pads include 6 independent pads; the positive and negative electrodes of the red light chip, the green light chip and the blue light chip are respectively arranged in one-to-one correspondence with the 6 independent pads, and are interconnected by bonding wires.

[0015] In one embodiment of the utility model, the red light chip is fixedly connected to the corresponding pad via silver glue, the green light chip is fixedly connected to the corresponding pad via insulating glue, and the blue light chip is fixedly connected to the corresponding pad via insulating glue.

[0016] The utility model also provides a TOP series display screen, including:

[0017] A plurality of lamp beads in any of the above embodiments;

[0018] A template group, a plurality of lamp bead arrays are arranged on the template group.

[0019] The above technical solution of the utility model has the following advantages compared with the prior art:

[0020] The TOP series LED bracket structure and display screen described in the utility model, due to the setting of the inclination angle of the second inner wall, the light emission of the second inner wall is reduced, and the setting of the inclination angle of the fourth inner wall makes the light diverge from the fourth inner wall, thereby guiding the light to propagate in the direction of the fourth inner wall, and realizing the change of the directivity of the light emission direction. It can be seen that this embodiment can reuse the light energy resources that originally emit light upward, improve the utilization rate of light energy, and at the same time improve the brightness of the light source in a specific direction. It solves the problems of low light utilization rate of outdoor high-place screens, waste of upward light sources, insufficient brightness, and insufficient colloid bonding between the side walls of the lamp beads and the packaging glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein:

[0022] Figure 1 It is a three-dimensional schematic diagram of a TOP series lamp bead in the preferred embodiment of the utility model;

[0023] Figure 2 yes Figure 1 A top view of

[0024] Figure 3 yes Figure 1Side view of

[0025] Figure 4 yes Figure 1 Schematic diagram of the structure of the TOP series display screen;

[0026] Description of the reference numerals in the specification: 100, support body; 110, installation chamber; 111, first inner wall; 112, second inner wall; 113, third inner wall; 114, fourth inner wall;

[0027] 200, chip assembly; 210, red light chip; 220, green light chip; 230, blue light chip;

[0028] 300, template group;

[0029] 400, lamp beads;

[0030] 500, bonding wire;

[0031] 600, pins. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0033] In the comparative embodiments, in order to meet the requirements of long viewing distance and high information transmission efficiency, most outdoor display screens are hung or installed at high places, and the TOP-shaped lamp beads emit light all around, while the audience mostly watches the screen from an upward angle. In this case, the main light source received by the audience is the light scattered from the middle and lower directions by the lamp beads, and the light energy emitted upward by the lamp beads is still wasted, which greatly reduces the luminous utilization rate and brightness of the lamp beads. In view of the current problems faced by customers, it is necessary to redevelop a product that can not only solve customer pain points, but also improve the luminous efficiency and brightness of outdoor screens. In some comparative embodiments, the luminous angle of the lamp beads is increased by changing the structure of the lamp beads, improving the ratio of encapsulation glue, and adding a resin layer on the top of the TOP lamp beads, thereby improving the screen display effect. However, it is impossible to convert the wasted light source into a usable light source from the root, the light utilization rate has not been significantly improved, and the reliability of the lamp beads cannot be guaranteed.

[0034] Therefore, refer to Figure 1~Figure 4 As shown, the present application provides a TOP series LED bracket structure, including:

[0035] The bracket body 100 has an installation chamber 110 in the middle for installing the lamp bead 400; the installation chamber 110 includes a first inner wall 111, a second inner wall 112, a third inner wall 113 and a fourth inner wall 114 arranged along the circumferential direction; wherein the first inner wall 111 and the third inner wall 113 are symmetrical along the X direction, and the second inner wall 112 and the fourth inner wall 114 are symmetrical along the Y direction; the X direction, the Y direction and the Z direction constitute a three-dimensional coordinate;

[0036] The angle α1 between the second inner wall 112 and the first plane is smaller than the angle α2 between the fourth inner wall 114 and the first plane. The first plane is the plane where the Y direction and the Z direction are located. The angle between the first inner wall 111 and the first plane and the angle between the third inner wall 113 and the first plane are both larger than the angle α2 between the fourth inner wall 114 and the first plane.

[0037] It should be noted that the placement direction of the fourth inner wall 114 is determined by the location of the audience or specific display requirements. For example, for an outdoor display screen, if the audience is located below the outdoor display screen, the second inner wall 112 is located above the outdoor display screen, and accordingly, the fourth inner wall 114 is located below the outdoor display screen. The first inner wall 111 and the third inner wall 113 are the left and right sides of the outdoor display screen.

[0038] Table 1 below shows the test results of the light emitting angle of the lamp bead 400 of the comparative embodiment and the utility model. As can be seen from the table, the light emitting angle of the embodiment is concentrated downward, and the light energy resources originally emitted upward are reused to form a certain degree of directional light emitting function, thereby improving the utilization rate of light energy.

[0039] Table 1

[0040]

[0041] Specifically, the light in this embodiment is reduced by the setting of the inclination angle of the second inner wall 112, and the setting of the inclination angle of the fourth inner wall 114 makes the light diverge from the fourth inner wall 114, and at the same time guides the light to propagate in the direction of the fourth inner wall 114, so as to achieve the change of the directivity of the light emission direction. It can be seen that this embodiment can reuse the light energy resources that originally emit light upward, improve the utilization rate of light energy, and at the same time improve the brightness of the light source in a specific direction. It solves the problems of low utilization rate of outdoor high-altitude screen light, waste of upward light source, insufficient brightness, and insufficient colloid bonding between the side wall of the lamp bead 400 and the packaging glue.

[0042] Further, the angle α1 between the second inner wall 112 and the first plane is 5° to 10°. The angle α2 between the fourth inner wall 114 and the first plane is 30° to 40°. The angle between the first inner wall 111 and the first plane and the angle between the third inner wall 113 and the first plane are 20° to 30°.

[0043] Furthermore, the surface roughness of the first inner wall 111, the second inner wall 112, the third inner wall 113 and the fourth inner wall 114 is 0.6-0.8 um. Specifically, the surface roughness of the first inner wall 111, the second inner wall 112, the third inner wall 113 and the fourth inner wall 114 in this embodiment is 0.6-0.8 um, which can increase the contact area between the side wall and the colloid, thereby improving the bonding between the inner wall of the lamp bead 400 and the colloid, and further improving the reliability.

[0044] Table 2 below shows the effect of different roughness on the reliability of the lamp bead 400. It can be seen from the table that the reliability of the lamp bead 400 is better in this embodiment, thereby optimizing the bonding between the colloid and the side wall of the lamp bead 400 and improving the reliability and service life of the lamp bead 400.

[0045] Table 2

[0046]

[0047] The utility model also provides a TOP series lamp bead 400, comprising: a TOP series LED bracket structure in any of the above embodiments;

[0048] The chip assembly 200 is arranged in the TOP series LED support structure; the chip assembly 200 includes a red light chip 210, a green light chip 220 and a blue light chip 230;

[0049] The chip assembly 200 is connected to the pad.

[0050] The pads include 6 independent pads; the positive and negative electrodes of the red light chip 210, the green light chip 220 and the blue light chip 230 are respectively set in one-to-one correspondence with the 6 independent pads, and are interconnected through bonding wires 500. Specifically, the red light chip 210 includes a red light positive electrode and a red light negative electrode; the green light chip 220 includes a green light positive electrode and a green light negative electrode; the blue light chip 230 includes a blue light positive electrode and a blue light negative electrode. Among them, the red light positive electrode, the red light negative electrode, the green light positive electrode, the green light negative electrode, the blue light positive electrode and the blue light negative electrode are respectively connected to the 6 independent pads through bonding wires 500. In this way, the pads do not affect each other, avoiding the risk of cross-lighting between the red, green and blue light sources.

[0051] In some embodiments, the red chip 210 , the green chip 220 , and the blue chip 230 are arranged in a line.

[0052] The red light chip 210 is fixedly connected to the corresponding pad via silver glue, the green light chip 220 is fixedly connected to the corresponding pad via insulating glue, and the blue light chip 230 is fixedly connected to the corresponding pad via insulating glue.

[0053] The utility model also provides a TOP series display screen, including:

[0054] A plurality of lamp beads 400 in any one of the above embodiments;

[0055] A template group 300 , and a plurality of lamp beads 400 are arranged in an array on the template group 300 .

[0056] This embodiment has high energy conversion efficiency, improves product reliability and stability, increases the light emitting angle of the lamp bead 400, and thus improves the screen display effect.

[0057] The utility model also provides a method for preparing a TOP series LED bracket structure, comprising:

[0058] Stamping to form terminals;

[0059] The bowl cup is injection molded and pressed together with the terminal according to the design size of the bowl cup through an injection mold. The bowl cup and the terminal are embedded in each other, and the bowl cup is made of polyphthalamide (PPA). Due to the setting of the angle between the fourth inner wall 114 and the first plane, the inner wall length L1 is increased, thereby increasing the volume of the fourth inner wall 114, which can achieve a better combination of the bowl cup and the internal terminal, thereby improving the reliability of the product.

[0060] The red, green, and yellow positive and negative independent pads correspond to the six independent pins 600 at the bottom of the cup, and the chip is connected to each independent pad through bonding wires 500. Then, the lamp beads 400 are subjected to post-process operations such as dispensing, light splitting, and tape mounting. Figure 4 As shown, the lamp beads 400 are attached to the module board in the form of an array and are lit by a constant current driving circuit to form an LED display screen.

[0061] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A TOP series LED bracket structure, characterized in that: include: The bracket body has an installation chamber in the middle for installing lamp beads; the installation chamber includes a first inner wall, a second inner wall, a third inner wall and a fourth inner wall arranged along the circumferential direction; wherein the first inner wall and the third inner wall are symmetrical along the X direction, and the second inner wall and the fourth inner wall are symmetrical along the Y direction; the X direction, the Y direction and the Z direction constitute a three-dimensional coordinate; The angle between the second inner wall and the first plane is smaller than the angle between the fourth inner wall and the first plane, and the first plane is the plane where the Y direction and the Z direction are located; the angle between the first inner wall and the first plane and the angle between the third inner wall and the first plane are both larger than the angle between the fourth inner wall and the first plane.

2. The TOP series LED support structure according to claim 1, characterized in that: The included angle between the second inner wall and the first plane is 5° to 10°.

3. The TOP series LED support structure according to claim 2, characterized in that: The included angle between the fourth inner wall and the first plane is 30° to 40°.

4. The TOP series LED support structure according to claim 3, characterized in that: The included angle between the first inner wall and the first plane and the included angle between the third inner wall and the first plane are 20° to 30°.

5. The TOP series LED support structure according to claim 1, characterized in that: The surface roughness of the first inner wall, the second inner wall, the third inner wall and the fourth inner wall is 0.6-0.8 um.

6. A TOP series lamp bead, characterized in that: include: The TOP series LED bracket structure according to any one of claims 1 to 5; A chip assembly is provided in the TOP series LED support structure; the chip assembly includes a red light chip, a green light chip and a blue light chip; A soldering pad, the chip component is connected to the soldering pad.

7. The TOP series lamp beads according to claim 6 are characterized in that: The pads include 6 independent pads; the positive electrodes and negative electrodes of the red light chip, the green light chip and the blue light chip are respectively arranged in one-to-one correspondence with the 6 independent pads, and are interconnected through bonding wires.

8. The TOP series lamp beads according to claim 7 are characterized in that: The red light chip is fixedly connected to the corresponding pad via silver glue, the green light chip is fixedly connected to the corresponding pad via insulating glue, and the blue light chip is fixedly connected to the corresponding pad via insulating glue.

9. A TOP series display screen, characterized in that: include: A plurality of lamp beads as described in any one of claims 6 to 8; A template group, wherein a plurality of the lamp bead arrays are arranged on the template group.

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