CN214896113U

CN214896113U - Night vision compatible LED liquid crystal display backlight module

Info

Publication number: CN214896113U
Application number: CN202120677999.9U
Authority: CN
Inventors: 李华平
Original assignee: Zhejiang Zhongshi Electronics Co ltd
Current assignee: Zhejiang Zhongshi Electronics Co ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-11-26
Anticipated expiration: 2031-04-02

Abstract

The utility model belongs to the technical field of backlight unit, especially, night vision compatible LED LCD backlight unit, it includes the mould shell in a poor light, a serial communication port, the outside of mould shell in a poor light is provided with the installation lug, has seted up a plurality of installation fixing hole on the installation lug, and the inboard top of mould shell in a poor light is regional for producing light transmission, and the inside top of mould shell in a poor light is provided with the polarizing plate, and the both sides of mould shell in a poor light are provided with a plurality of LED lamp strips, and the inside region of mould shell in a poor light is provided with the diffuser plate, and the below of diffuser plate is provided with highlight weakening board, and the below of highlight weakening board is provided with prism board, the utility model discloses be convenient for can let the night vision see the effect of shadow and the normal condition under see the shadow obtain unanimous effect, avoid reducing the impression under the normal view because of night vision performance.

Description

Night vision compatible LED liquid crystal display backlight module

Technical Field

The utility model relates to a mechanical polishing technical field especially relates to a night vision compatible LED LCD backlight unit.

Background

The liquid crystal molecules refract light of the backlight source to present different colors, and the liquid crystal molecules cannot emit light and are mainly realized by the irradiation of the backlight source. At present, in the white light emitted by the LED device in the prior art, the energy of the blue spectrum (high-frequency spectrum) is very high, and the high proportion of the energy of the blue light has great harm to the eyes of people, especially the eyes of teenagers; moreover, blue light can inhibit the secretion of melatonin of a human body, and the excessive proportion of blue light can disturb the normal biological clock of the human body. The LED is called as a green light source, has the characteristics of energy conservation, environmental protection, long service life, small volume and the like, and can be widely applied to the fields of various displays, decorations, backlight sources, common illumination, urban night scenes and the like. In recent years, some economically developed countries in the world develop fierce technical competition around the development of the LED, and relevant policies and measures are developed in various places to accelerate the development of LED lamps, so that the development of the LED lamps is well paved for promoting the further generalization of the LED.

The LED grouping illumination of the existing display backlight module compatible with night vision is uneven, and a large amount of strong light is still gathered in night vision to damage eyes of a user, so that the strong light cannot be reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems that the device is not convenient to use: the LED grouping illumination of the display backlight module compatible with night vision is uneven, and a large amount of strong light is still gathered in night vision to damage eyes of a user, so that the strong light cannot be reduced.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a night vision compatible LED LCD backlight unit, including the mould shell of being shaded, a serial communication port, the outside of mould shell of being shaded is provided with the installation lug, a plurality of installation fixing hole have been seted up on the installation lug, the inboard top area of mould shell of being shaded is for producing the light transmission region, the inside top of mould shell of being shaded is provided with the polarizing plate, the both sides of mould shell of being shaded are provided with a plurality of LED lamp strips, the inside area of mould shell of being shaded is provided with the diffuser plate, the below of diffuser plate is provided with highlight weakening board, the below of highlight weakening board is provided with prism board, and prism board's below is provided with the beam splitter, and the below of beam splitter is provided with the reflecting plate.

The installation lugs are arranged on the two side surfaces of the backlight mould shell, the number of the installation lugs is two, the installation fixing through holes are uniformly formed in the installation lugs, and the distance between every two installation fixing through holes is at least 0.5 cm.

The lower part of the light transmission generating area is provided with a polarizing plate, the upper gap area of the polarizing plate is the light transmission generating area, and the position of the light transmission generating area is in the upper area inside the backlight mould shell.

The LED lamp strips are arranged on two sides of the backlight mould shell, the plurality of backlight mould shells are divided into a white light LED lamp strip and a blue light LED lamp strip, and the two LED lamp strips are arranged on two sides of the backlight mould shell at intervals.

The utility model discloses a backlight mould shell, including diffuser plate, highlight weakening board, prism board, the both sides of beam splitter and reflecting plate are provided with LED lamp strip, and the diffuser plate, the highlight weakening board, prism board, beam splitter and reflecting plate are in the middle of the LED lamp strip, and the diffuser plate, the highlight weakening board, prism board, beam splitter and reflecting plate set gradually at the mould shell inner region that is shaded from the top down mode.

The strong light weakening plate is formed by compounding two plate bodies with a weakening film, a layer of extinction black paint is coated on the weakening film on the strong light weakening plate, and the thickness of the extinction black paint is not less than 0.2 mm.

Compared with the prior art, the utility model has the advantages of:

(1) when this scheme was used, the user was when seeing the shadow at night, and display backlight module will go on enlargiing the light and get into its night vision mode, and its light that comes thereupon also can improve, and the highlight weakening board can cut down its highlight refraction, and its beneficial effect is: the condition that the eyes of the user are damaged due to the fact that the user looks at the film at night is reduced.

(2) The utility model discloses a LED lamp strip design then is luminous effect is even under in order to let the night vision, and does not also influence the effect under the normal condition, and its beneficial effect is: the effect of watching the film at night vision and the effect of watching the film under normal conditions can be consistent, and the phenomenon that the impression under normal viewing is reduced due to the generation of night vision performance is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a night vision compatible LED lcd backlight module according to the present invention;

fig. 2 is a schematic structural diagram of a night vision compatible LED lcd backlight module according to the present invention;

fig. 3 is a schematic diagram of a partial enlarged structure of a night vision compatible LED lcd backlight module shown in fig. 2 according to the present invention;

in the figure: the backlight module comprises a backlight module shell 1, mounting lugs 2, mounting fixing through holes 3, a light transmission area 4, a polarizing plate 5, an LED lamp bar 6, a diffusion plate 7, a strong light weakening plate 8, a prism plate 9, a light splitting sheet 10 and a reflecting plate 11.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

Referring to fig. 1-3, a night vision compatible LED lcd backlight module comprises a backlight module 1, wherein the backlight module 1 is provided with a plurality of mounting protrusions 2 at the outer side, the mounting protrusions 2 are provided with a plurality of mounting fixing through holes 3, the upper region of the inner side of the backlight module 1 is a light transmission region 4, the backlight module 1 is provided with a polarizer 5 at the inner upper side, the backlight module 1 is provided with a plurality of LED light bars 6 at the two sides, the backlight module 1 is provided with a diffuser 7 at the inner region, a glare weakening plate 8 is provided below the diffuser 7, a prism plate 9 is provided below the glare weakening plate 8, a light splitter 10 is provided below the prism plate 9, a reflector 11 is provided below the light splitter 10, the mounting protrusions 2 are provided at the two side surfaces of the backlight module 1, the mounting protrusions 2 are provided with two mounting fixing through holes 3, the mounting fixing through holes 3 are uniformly provided on the mounting protrusions 2, the minimum distance of 0.5 cm is reserved between every two installation fixing through holes 3, a polarizing plate 5 is arranged below a light transmission generating area 4, a gap area above the polarizing plate 5 is the light transmission generating area 4, the light transmission generating area 4 is positioned in the upper area inside the backlight formwork 1, the LED lamp strips 6 are arranged on two sides of the backlight formwork 1, the LED lamp strips 1 are divided into a white LED lamp strip and a blue LED lamp strip, the two LED lamp strips 6 are arranged on two sides of the backlight formwork 1 in a spaced mode, under the normal viewing condition, the LED lamp strips 6 can open the white LED lamp strips to work, the polarizing plate 5, the diffusion plate 7, the prism plate 9, the light splitting sheet 10 and the reflection plate 11 can work in cooperation with the LED lamp strips 6, and because the LED lamp strips 6 are designed in a spaced mode, under the normal condition or the night viewing condition, and the light sensation emissivity is the same, so that the effect of the film is not influenced.

Example two

The diffusion plate 7, the highlight weakening plate 8, the prism plate 9, the light splitting sheet 10 and the reflection plate 11 are provided with LED lamp strips 6 on two sides, the diffusion plate 7, the highlight weakening plate 8, the prism plate 9, the light splitting sheet 10 and the reflection plate 11 are arranged in the middle of the LED lamp strips 6, the diffusion plate 7, the highlight weakening plate 8, the prism plate 9, the light splitting sheet 10 and the reflection plate 11 are sequentially arranged in the inner area of the backlight mould shell 1 from top to bottom, the highlight weakening plate 8 is a weakening plate formed by compounding two plate bodies and a weakening film, the weakening film on the highlight weakening plate 8 is coated with a layer of extinction black paint, the thickness of the extinction black paint is not less than 0.2 mm, when the night vision is carried out, the blue LED lamp strip can work, and the highlight weakens board 8 will be to the light sense operation that its blue light LED lamp strip produced, and highlight weakens board 8 can cut down the light sense through inside extinction black lacquer, avoids a large amount of productions of highlight.

The above descriptions are only preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to, replaced or changed.

Claims

1. The utility model provides a night vision compatible LED LCD backlight unit, including backlight formwork (1), its characterized in that, the outside of backlight formwork (1) is provided with installation lug (2), a plurality of installation fixed through-hole (3) have been seted up on installation lug (2), the inboard top area of backlight formwork (1) is for producing light transmission area (4), the inside top of backlight formwork (1) is provided with polarizing plate (5), the both sides of backlight formwork (1) are provided with a plurality of LED lamp strip (6), the inside area of backlight formwork (1) is provided with diffuser plate (7), the below of diffuser plate (7) is provided with highlight weakening board (8), the below of highlight weakening board (8) is provided with prism board (9), and the below of prism board (9) is provided with beam splitter (10), and the below of beam splitter (10) is provided with reflecting plate (11).

2. The night vision compatible LED lcd backlight module of claim 1, wherein: the installation lugs (2) are arranged on the two side surfaces of the backlight formwork (1), the number of the installation lugs (2) is two, and the installation fixing through holes (3) are uniformly formed in the installation lugs (2).

3. The night vision compatible LED lcd backlight module of claim 1, wherein: a polarizing plate (5) is arranged below the light transmission generating area (4), the upper gap area of the polarizing plate (5) is the light transmission generating area (4), and the position of the light transmission generating area (4) is in the upper area inside the backlight mould shell (1).

4. The night vision compatible LED lcd backlight module of claim 1, wherein: the LED light bars (6) are arranged on two sides of the backlight formwork (1), the backlight formwork (1) is divided into a white light LED light bar and a blue light LED light bar by the LED light bars (6), and the two LED light bars (6) are arranged on two sides of the backlight formwork (1) at intervals.

5. The night vision compatible LED lcd backlight module of claim 1, wherein: diffuser plate (7), highlight weakens board (8), prism board (9), the both sides of beam splitter (10) and reflecting plate (11) are provided with LED lamp strip (6), diffuser plate (7), highlight weakens board (8), prism board (9), in the middle of beam splitter (10) and reflecting plate (11) are in LED lamp strip (6), diffuser plate (7), highlight weakens board (8), prism board (9), beam splitter (10) and reflecting plate (11) are from last downward mode and set gradually at the mould shell (1) inner region in a poor light.

6. The night vision compatible LED lcd backlight module of claim 1, wherein: the strong light weakening plate (8) is a weakening plate which is formed by compounding two plate bodies and a weakening film, and the weakening film on the strong light weakening plate (8) is coated with a layer of extinction black paint.