Full-color dot matrix display screen

Abstract

The utility model relates to the technical field of full-color light-emitting diode (LED) display, in particular to a full-color dot matrix display screen, which comprises a lamp panel, a light shielding plate, a light mixing plate, an outer lens and a shell, the outer lens is fixed at the front part of the shell and forms an inner cavity, and the full-color dot matrix display screen is characterized in that the lamp panel, the light shielding plate and the light mixing plate are sequentially and correspondingly fixed in the inner cavity from back to front; the light mixing prism is scientific in design, reasonable in structure and safe and reliable in function, through light diffusion of the light mixing prism, large-angle refraction is conducted on RGB three-color light, the three-color light in any proportion is evenly mixed, rich colored light is generated, colorful dot matrix display is achieved, the effect is ideal, and the manufacturing cost is not high.

Description

TECHNICAL FIELD

[0001] The utility model relates to full -color LED display technical field especially relates to full -color dot matrix display screen. BACKGROUND

[0002] With the development of LED technology, the function of the car exterior light is slowly evolving. In addition to the original traditional lighting and traditional signal lamp function, the car exterior lamp is recently also endowed with the function of emotional and information interaction with the outside personnel. The large use of LED, combined with the precise digital control of single LED, makes it possible for high pixel matrix display lamp. The dot matrix screen display technology currently seen on the market is monochrome. The patent document (announcement number CN202264729 U) discloses a kind of display method and device of interactive vehicle-mounted dot matrix screen, and the display of this kind of dot matrix screen can only be monochrome gray scale display. In addition to the gradual increase of pixel display level, the car exterior light can become more colorful in light color, which becomes a demand, and the use of RGB dimming output of various different light colors is also a development direction of this technical field. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides a kind of full -color dot matrix display screen, and the light diffusion effect of light mixing prism is used, the RGB three color light is refracted at large angle, three color light is mixed to generate each color light, to realize the dot matrix display of full -color LED.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A kind of full -color dot matrix display screen, including lamp plate, light shield, light mixing plate, outer lens and shell, the outer lens is fixed in the front of shell, and form inner cavity, it is characterized in that, the inner cavity is sequentially fixed with lamp plate, light shield and light mixing plate from back to front, correspondingly, the lamp plate is fixed with the lamp bead of matrix arrangement, the lamp bead is the LED lamp bead with the function of emitting red, green, blue three color light, the light shield is opened with the light transmission hole of matrix arrangement, the area outside the light transmission hole on the light shield is light shielding wall, the light mixing plate is made of PC material containing diffusing agent, is equipped with the light mixing prism of matrix arrangement, the light mixing prism is integrated with light mixing plate, its front end protrudes light mixing plate front panel, and rear end protrudes light mixing plate rear panel, the light mixing prism and the geometric shape of light transmission hole are same in front and back correspondence, the lamp bead, light transmission hole and light mixing prism on the lamp plate, light shield and light mixing plate in front and back correspondence, position is corresponding.

[0006] The lamp bead, light transmission hole and light mixing prism on the lamp plate, light shield and light mixing plate in front and back correspondence are consistent with the center line.

[0007] The geometric shape of the light transmission hole and the light mixing prism is square, circular, triangular, rhombic or other geometric shapes.

[0008] The center distance between the light beads, the light transmission holes and the light mixing prisms corresponding to each other in front and back on the lamp panel, the light shielding panel and the light mixing panel is not less than 4 mm.

[0009] The minimum interval of the adjacent light mixing prisms is 0.5 mm.

[0010] The light mixing prisms arranged in a matrix on the light mixing panel are of the same geometric shape, and the geometric shapes of the light transmission holes and the light mixing prisms correspond to each other in front and back.

[0011] The light mixing prisms arranged in a matrix on the light mixing panel are of different geometric shapes, and the geometric shapes of the light transmission holes and the light mixing prisms correspond to each other in front and back.

[0012] The interval between the lamp panel and the light shielding panel is 1 mm-2 mm, and the interval between the light shielding panel and the light mixing panel is 0.3 mm-0.8 mm.

[0013] The full-color dot matrix display screen has the advantages of scientific design, reasonable structure, safe and reliable action, light diffusion of the light mixing prisms, large-angle refraction of RGB three-color light, uniform mixing of three-color light of any proportion, generation of rich color light, realization of colorful dot matrix display, ideal effect and low manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application.

[0015] Figure 1 It is a three-dimensional schematic view of the full-color dot matrix display screen of the present application;

[0016] Figure 2 It is an exploded schematic view of the full-color dot matrix display screen of the present application; Figure 1

[0017] Figure 3 It is a AA-AA sectional view schematic of the full-color dot matrix display screen of the present application;

[0018] Figure 4 It is a partial enlarged schematic view of the full-color dot matrix display screen of the present application; Figure 3

[0019] Figure 5 Figure 4

[0020] ​​​​In the figure: A-light board; A1-lamp bead; A2-transmitted light; A3-blocked light; B-light shielding plate; B1-light shielding wall; B2-light transmission hole; C-light mixing plate; C1-light incident surface; C2-adjacent light incident surface; C3-light exit surface (pixel surface); red-R; green-G; blue-B. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described below are only used to explain the present invention. In these descriptions, the keywords that need attention include "full color", "transmitted light", "blocked light", "blocked light", "light-transmitting hole", "light-mixing prism", "light incident surface", "adjacent light incident surface" and "light exit surface". These are only for the convenience of describing the present invention and simplifying the description, and therefore should not be understood as limiting the present invention.

[0022] See Figures 1-4 As shown, the full-color dot matrix display screen of the present invention includes a lamp board A, a light shielding plate B, a light mixing plate C, an outer lens and a shell. The outer lens is fixed to the front of the shell and forms an inner cavity. The lamp board A, the light shielding plate B and the light mixing plate C are fixed in the inner cavity in sequence from back to front. The lamp board A is fixed with lamp beads A1 arranged in a matrix. The lamp beads A1 are LED lamp beads with the function of emitting red R, green G and blue B three-color light. The distance between the lamp board A and the light shielding plate B is 1mm-2mm, and the distance between the light shielding plate B and the light mixing plate C is 0.3mm-0.8mm. The light shielding plate B is provided with light-transmitting holes B2 arranged in a matrix. The geometric shape of the light-transmitting holes B2 is square, circular, triangular, diamond or other geometric shapes. The area outside the light-transmitting holes B2 on the light shielding plate B is the light-shielding wall B1. The light-mixing plate C is made of PC material containing a diffusing agent and is provided with light-mixing prisms arranged in a matrix. The light-mixing prisms are integrated with the light-mixing plate C. The front ends of the light-mixing prisms extend out of the front plate surface of the light-mixing plate C to serve as pixels of light passing through the outer lens, while the rear ends extend out of the rear plate surface of the light-mixing plate C. The front end surface is the front light-emitting surface C3, and the rear end surface is the rear light-emitting surface C1. The rear light-emitting surface C1 has the rear light-emitting surface C2 of its adjacent light-mixing prism. The geometric shapes of the light-mixing prism (end face) and the light-transmitting hole B2 are the same in front and back correspondence, and can also be square, circular, triangular, diamond or other geometric shapes in their front and back correspondence, or, see Figure 1 As shown, the light mixing prisms (end faces) arranged in a matrix on the light mixing plate C are of different geometric shapes, which can be square, circular, triangular, diamond or other geometric shapes, but see Figure 2As shown, the light mixing prism (end face) and the light transmission hole B2 are geometrically corresponding, the front light exit surface C3 of the light mixing prism is used as the pixel point surface of the light transmission of the outer lens. The lamp beads A1, the light transmission holes B2 and the light mixing prisms on the lamp plate A, the light shielding plate B and the light mixing plate C correspond in position and the center lines are consistent, that is, the centers of them are located on the same center line. The center distance of the lamp beads A1, the light transmission holes B2 and the light mixing prisms on the lamp plate A, the light shielding plate B and the light mixing plate C is not less than 4mm, and the minimum interval of the light mixing prisms (square, circular, triangular, rhombic or other geometric shapes) and the adjacent light mixing prisms is 0.5mm.

[0023] The full-color dot matrix display screen of the utility model, as shown, Figure 5 As shown, RGB three-color lamp beads are used as light sources, and the LED lamp beads A1 can emit R red, G green and B blue three-color light functions. According to software control instructions, the required red, green and blue three-color light of various colors is matched, the three-color light source of the lamp beads A1 is firstly irradiated to the light shielding plate B, the transmission light A2 passes through the light transmission hole B2 and is irradiated to the light mixing prism light mixing prism of the light mixing plate C in front, the three-color light source is mixed through the light mixing prism, the shielding light A3 of the three-color light source is shielded by the light shielding plate B1 outside the light transmission hole B2, and therefore cannot reach the light mixing prism light mixing prism of the adjacent light mixing prism, so that the light interference of the adjacent light mixing prism is avoided, the light mixing prism is made of PC material containing a diffusing agent, the refraction of light is affected, the red, green and blue three-color light can be refracted at a large angle in the light mixing prism prism for many times, the three colors of light can be fully mixed in the prism and then emitted from the light exit surface C3, and the color of the pixel point is uniform from each angle in front. The amount of the diffusing agent in the light mixing prism can be reasonably matched and adjusted according to the light source power and light intensity requirement.

[0024] The utility model discloses full -color dot matrix display screen its feature lies in, the light source is first through the light shielding support, filters the light of LED large angle, prevents this part of light to enter to adjacent light mixing prism's pixel grid, can make the contrast of pixel point edge more definite. The light mixing prism adopts the PC material containing diffusing agent, and the refraction of light is affected, so that the red, green and blue three-color light can be refracted at a large angle in the light mixing prism prism for many times, so that the three colors of light can be fully mixed in the prism and then emitted from the light exit surface C3, so that the color of the pixel point is uniform from each angle in front. The amount of the diffusing agent in the light mixing prism can be reasonably matched and adjusted according to the light source power and light intensity requirement.

[0025] The above only for the general embodiment of the utility model, for the person skilled in the art, the utility model can have various changes and other implementation ways of variation, and here is not detailed. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model are included in the protection scope required by the utility model.

Claims

1. A full-color dot matrix display screen, comprising a light board (A), a light shielding plate (B), a light mixing plate (C), an outer lens, and a housing, wherein the outer lens is fixed to the front of the housing and forms an inner cavity, characterized in that: The inner cavity is fixed with a light board (A), a light shielding plate (B) and a light mixing plate (C) in sequence from back to front. The light board (A) is fixed with lamp beads (A1) arranged in a matrix. The lamp beads (A1) are LED lamp beads with the function of emitting red, green and blue light. The light shielding plate (B) is provided with light-transmitting holes (B2) arranged in a matrix. The area outside the light-transmitting holes (B2) on the light shielding plate (B) is a light-shielding wall (B1). The light mixing plate (C) is fixed with a light board (A1) arranged in a matrix. The plate (C) is made of PC material containing a diffusing agent and is provided with light-mixing prisms arranged in a matrix. The light-mixing prisms are integrated with the light-mixing plate (C), with their front ends extending out of the front surface of the light-mixing plate C and their rear ends extending out of the rear surface of the light-mixing plate C. The geometric shapes of the light-mixing prisms and the light-transmitting holes (B2) are the same in front and back correspondence. The lamp beads (A1), light-transmitting holes (B2) and light-mixing prisms on the light plate (A), the light-shielding plate (B) and the light-mixing plate (C) corresponding to each other in the front and back correspond to each other.

2. A full-color dot matrix display screen according to claim 1, characterized in that: The center lines of the corresponding lamp beads (A1), light-transmitting holes (B2) and light-mixing prisms on the light board (A), light-shielding board (B) and light-mixing board (C) are consistent.

3. The full-color dot matrix display screen according to claim 1, characterized in that: The geometric shapes of the light-transmitting hole (B2) and the light-mixing prism are square, circular, triangular, diamond or other geometric shapes.

4. The full-color dot matrix display screen according to claim 1, characterized in that: The center distance between the corresponding lamp beads (A1), light-transmitting holes (B2) and light-mixing prisms on the light board (A), light shielding board (B) and light-mixing board (C) is not less than 4 mm.

5. The full-color dot matrix display screen according to claim 1, characterized in that: The minimum spacing between adjacent light-mixing prisms is 0.5 mm.

6. The full-color dot matrix display screen according to claim 1, characterized in that: The light-mixing prisms arranged in a matrix on the light-mixing plate (C) have the same geometric shape, and the geometric shapes of the light-transmitting holes (B2) and the light-mixing prisms are the same in front and back correspondence.

7. The full-color dot matrix display screen according to claim 1, characterized in that: The light-mixing prisms arranged in a matrix on the light-mixing plate (C) have different geometric shapes, and the geometric shapes of the light-transmitting holes (B2) and the light-mixing prisms are the same in the front and back directions.

8. The full-color dot matrix display screen according to claim 1, characterized in that: The distance between the light board (A) and the light shielding plate (B) is 1mm-2mm, and the distance between the light shielding plate (B) and the light mixing plate (C) is 0.3mm-0.8mm.

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