CN210443167U

CN210443167U - Backlight source for LED display screen of industrial control instrument

Info

Publication number: CN210443167U
Application number: CN201922160564.2U
Authority: CN
Inventors: 李健权; 张培祖; 刘文焕; 周谋兴; 杨荣辉; 李化
Original assignee: Shenzhen Jialude Photoelectric Technology Co Ltd
Current assignee: Shenzhen Jialude Photoelectric Technology Co Ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-05-01
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a backlight for industry control instrument LED display screen, including LED backlight structure and LED lamp strip, LED backlight structure is including luminous main part, light guide plate, reflector and diffusion sheet, luminous main part joint is installed at the side inner wall of reflector, the inner wall at the reflector is installed to the light guide plate joint, diffusion sheet's lower extreme fixed connection is in the upper end of reflector, diffusion sheet's lower extreme middle part fixed connection is in the upper end of light guide plate, luminous main part includes the lamp stand, the lateral wall fixed connection that the LED lamp strip passes through the lamp stand, the LED lamp strip passes through external power supply electric connection, the LED lamp strip is fixed through the lateral part inner wall joint of reflector, the lamp stand is fixed through the side joint of reflector, the light guide plate includes astigmatism hole and transparent plate, the upper wall at the transparent plate is seted up in the astigmatism hole. The utility model discloses can improve the luminous degree of consistency of device, better satisfying the use needs.

Description

Backlight source for LED display screen of industrial control instrument

Technical Field

The utility model relates to a backlight equipment technical field specifically is a backlight for industrial control instrument LED display screen.

Background

Common backlight mainly comprises light guide plate, diffuser plate and reflecting plate, and light passes through light guide plate direction diffusion board and reflecting plate by light source department, through the reflecting plate with the diffuser plate that light was concentrated on, and common light guide plate can receive the light source apart from the influence to diffuser plate and reflecting plate when carrying light usually, and the astigmatic point align to grid of light guide plate can form the problem of the light intensity discrepancy, so need a device that can alleviate above-mentioned problem urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a backlight for industrial control instrument LED display screen to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a backlight source for an LED display screen of an industrial control instrument comprises an LED backlight source structure and an LED lamp bar; the LED backlight source structure comprises a light-emitting main body, a light guide plate, a reflecting cover and a light-diffusing plate, wherein the light-emitting main body is clamped and mounted on the inner wall of the side end of the reflecting cover, the light guide plate is clamped and mounted on the inner wall of the reflecting cover, the lower end of the light-diffusing plate is fixedly connected to the upper end of the reflecting cover, and the middle part of the lower end of the light-diffusing plate is fixedly connected to the upper end; the LED lamp strip is clamped and fixed through the inner wall of the side part of the reflecting cover, and the lamp holder is clamped and fixed through the side end of the reflecting cover; the light guide plate comprises light scattering holes and a transparent plate, the light scattering holes are formed in the upper wall of the transparent plate, the light scattering holes in one side, close to the LED light bar, of the transparent plate are sparse, the light scattering holes in the other side of the transparent plate are compact, and the longitudinal distance between the light scattering holes in one side of the transparent plate and the longitudinal distance between the light scattering holes in the other side of the transparent plate are gradually changed and compact; the reflector comprises a cover body, the lower end of the light-diffusing plate is fixedly connected with the upper wall of the cover body, the lamp holder is clamped and fixed at the side end of the cover body, the transparent plate is clamped and fixed with the inner wall of the cover body, the upper wall of the transparent plate is fixedly connected with the lower wall of the light-diffusing plate, and the transparent plate and the LED lamp strip are tightly attached together.

Preferably, the light-emitting main body further comprises clamping grooves symmetrically formed in the side wall of the lamp holder.

Preferably, the light emitting main body further comprises a first buckle, and the first buckle is fixedly connected with the side end of the cover body.

Preferably, the light-emitting main body further comprises a second buckle, the second buckle is fixedly connected with the side end of the cover body, the first buckle and the second buckle are symmetrically arranged at the side end of the cover body, and the lamp holder is fixedly clamped with the cover body through the clamping groove, the first buckle and the second buckle.

Preferably, the reflector further comprises a reflecting layer, and the reflecting layer is coated on the inner wall of the cover body.

Compared with the prior art, the beneficial effects of the utility model are as follows:

when the light-emitting main body and the reflecting shade need to be assembled, the LED lamp strip is directly plugged into the inner wall of the shade body, then the lamp holder is continuously plugged into the inner side direction of the shade body, the first buckle and the second buckle are unfolded by utilizing the side end of the lamp holder until the first buckle and the second buckle are clamped into the inner wall of the clamping groove to complete the fixing work of the lamp holder and the shade body, and the purpose of fixedly clamping the light-emitting main body and the reflecting shade together is achieved; the device light emitting work is that the LED lamp strip is utilized to emit light, the transparent plate is utilized to guide the light into the device, the light is emitted to the outer side by utilizing the light emitting holes, the reflecting layer is utilized to save light energy at the upper side where the light is concentrated, the gradual change distribution form of the light emitting holes is utilized to lead out light intensity by increasing the quantity of the side with weak light receiving rate, the purpose of balancing the outward scattering rate of the surface layer of the transparent plate is achieved, finally, the light is further averaged by utilizing the light emitting plate, and the uniformity of the whole device light emitting is improved.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a schematic view of the main body of the present invention;

fig. 3 is a schematic view of the split structure of the light-emitting main body of the present invention;

FIG. 4 is a schematic top view of the light guide plate of the present invention;

fig. 5 is a schematic structural view of the reflector of the present invention.

In the figure: 1. an LED backlight source structure; 2. a light emitting body; 3. a light guide plate; 4. a reflector; 5. a light-diffusing sheet; 6. a lamp socket; 7. a card slot; 8. an LED light bar; 9. a first buckle; 10. a second buckle; 11. a light-diffusing hole; 12. a transparent plate; 13. a cover body; 14. and a reflective layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships that are relative to each other, are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-5, the present invention provides an embodiment: a backlight source for an LED display screen of an industrial control instrument comprises an LED backlight source structure 1 and an LED light bar 8; the LED backlight source structure 1 comprises a light-emitting main body 2, a light guide plate 3, a reflecting shade 4 and a light-diffusing plate 5, wherein the light-emitting main body 2 is clamped and installed on the inner wall of the side end of the reflecting shade 4, the light guide plate 3 is clamped and installed on the inner wall of the reflecting shade 4, the lower end of the light-diffusing plate 5 is fixedly connected to the upper end of the reflecting shade 4, and the middle part of the lower end of the light-diffusing plate 5 is fixedly connected; the light-emitting main body 2 comprises a lamp holder 6, the LED lamp strips 8 are fixedly connected through the side walls of the lamp holder 6, the LED lamp strips 8 are electrically connected through an external power supply, the LED lamp strips 8 are clamped and fixed through the inner walls of the side parts of the reflecting covers 4, and the lamp holder 6 is clamped and fixed through the side ends of the reflecting covers 4; the light guide plate 3 comprises light scattering holes 11 and a transparent plate 12, the light scattering holes 11 are formed in the upper wall of the transparent plate 12, the light scattering holes 11 in one side, close to the LED lamp strips 8, of the transparent plate 12 are sparse, the light scattering holes 11 in the other side of the transparent plate 12 are compact, and the longitudinal intervals between the light scattering holes 11 in one side of the transparent plate 12 and the other side of the transparent plate are gradually changed and compact; the reflector 4 comprises a cover body 13, the lower end of the light-diffusing plate 5 is fixedly connected with the upper wall of the cover body 13, the lamp holder 6 is clamped and fixed with the side end of the cover body 13, the transparent plate 12 is clamped and fixed with the inner wall of the cover body 13, the upper wall of the transparent plate 12 is fixedly connected with the lower wall of the light-diffusing plate 5, and the transparent plate 12 is tightly attached to the LED lamp strip 8; when the light-emitting main body 2 and the reflecting shade 4 need to be assembled, the LED lamp strip 8 is directly plugged into the inner wall of the shade body 13, then the lamp holder 6 is continuously plugged into the inner side direction of the shade body 13, the side end of the lamp holder 6 is utilized to prop open the first buckle 9 and the second buckle 10 until the first buckle 9 and the second buckle 10 are clamped into the inner wall of the clamping groove 7 to complete the fixing work of the lamp holder 6 and the shade body 13, and the purpose of fixedly clamping the light-emitting main body 2 and the reflecting shade 4 together is achieved; the device light emitting work is that the LED lamp strip 8 emits light, the transparent plate 12 is used for guiding the light in, the light scattering holes 11 are used for scattering the light to the outer side, the reflecting layer 14 is used for saving the light energy at the upper side where the light is concentrated, the gradual change distribution form of the light scattering holes 11 is used for improving the quantity of the light intensity guided out at the side with weak light receiving rate, the purpose of balancing the outward scattering rate of the surface layer of the transparent plate 12 is achieved, finally, the light is further averaged by the light scattering plate 5, and the uniformity of the whole light emitting of the device is improved.

The light-emitting main body 2 further comprises clamping grooves 7, and the clamping grooves 7 are symmetrically formed in the side wall of the lamp holder 6; the light-emitting main body 2 further comprises a first buckle 9, and the first buckle 9 is fixedly connected with the side end of the cover body 13; the light-emitting main body 2 further comprises a second buckle 10, the second buckle 10 is fixedly connected with the side end of the cover body 13 through the side end, the first buckle 9 and the second buckle 10 are symmetrically arranged at the side end of the cover body 13, and the lamp holder 6 is fixedly clamped with the cover body 13 through the clamping groove 7, the first buckle 9 and the second buckle 10; the reflector 4 further comprises a reflective layer 14, and the reflective layer 14 is coated on the inner wall of the cover body 13.

The working principle is as follows: when the light-emitting main body 2 and the reflecting shade 4 need to be assembled, the LED lamp strip 8 is directly plugged into the inner wall of the shade body 13, then the lamp holder 6 is continuously plugged into the inner side direction of the shade body 13, the side end of the lamp holder 6 is utilized to prop open the first buckle 9 and the second buckle 10 until the first buckle 9 and the second buckle 10 are clamped into the inner wall of the clamping groove 7 to complete the fixing work of the lamp holder 6 and the shade body 13, and the purpose of fixedly clamping the light-emitting main body 2 and the reflecting shade 4 together is achieved; the device light emitting work is that the LED lamp strip 8 emits light, the transparent plate 12 is used for guiding the light in, the light scattering holes 11 are used for scattering the light to the outer side, the reflecting layer 14 is used for saving the light energy at the upper side where the light is concentrated, the gradual change distribution form of the light scattering holes 11 is used for improving the quantity of the light intensity guided out at the side with weak light receiving rate, the purpose of balancing the outward scattering rate of the surface layer of the transparent plate 12 is achieved, finally, the light is further averaged by the light scattering plate 5, and the uniformity of the whole light emitting of the device is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a backlight for industrial control instrument LED display screen, includes LED backlight structure (1) and LED lamp strip (8), its characterized in that: the LED backlight source structure (1) comprises a light-emitting main body (2), a light guide plate (3), a reflector (4) and a light-diffusing plate (5), wherein the light-emitting main body (2) is clamped and installed on the inner wall of the side end of the reflector (4), the light guide plate (3) is clamped and installed on the inner wall of the reflector (4), the lower end of the light-diffusing plate (5) is fixedly connected to the upper end of the reflector (4), and the middle part of the lower end of the light-diffusing plate (5) is fixedly connected to the upper end of the light guide plate (3); the LED lamp strip is characterized in that the light-emitting main body (2) comprises a lamp holder (6), the LED lamp strips (8) are fixedly connected through the side walls of the lamp holder (6), the LED lamp strips (8) are electrically connected through an external power supply, the LED lamp strips (8) are clamped and fixed through the inner walls of the side parts of the reflecting covers (4), and the lamp holder (6) is clamped and fixed through the side ends of the reflecting covers (4); the light guide plate (3) comprises light scattering holes (11) and a transparent plate (12), the light scattering holes (11) are formed in the upper wall of the transparent plate (12), the light scattering holes (11) on one side, close to the LED light bar (8), of the transparent plate (12) are sparse, the light scattering holes (11) on the other side of the transparent plate (12) are compact, and the longitudinal distance from one side of the transparent plate (12) to the other side of the transparent plate (11) is in a gradually-changed compact form; the reflector (4) comprises a cover body (13), the lower end of the light-diffusing plate (5) is fixedly connected with the upper wall of the cover body (13), the lamp holder (6) is fixed through clamping of the side end of the cover body (13), the transparent plate (12) is fixed through clamping of the inner wall of the cover body (13), the upper wall of the transparent plate (12) is fixedly connected with the lower wall of the light-diffusing plate (5), and the transparent plate (12) is tightly attached to the LED lamp strip (8).

2. The backlight source for the LED display screen of the industrial control instrument as claimed in claim 1, wherein: the luminous body (2) further comprises clamping grooves (7), and the clamping grooves (7) are symmetrically formed in the side wall of the lamp holder (6).

3. The backlight source for the LED display screen of the industrial control instrument as claimed in claim 2, wherein: the light-emitting main body (2) further comprises a first buckle (9), and the first buckle (9) is fixedly connected with the side end of the cover body (13).

4. The backlight source for the LED display screen of the industrial control instrument as claimed in claim 3, wherein: luminous main part (2) still include second buckle (10), second buckle (10) are through the side fixed connection of the cover body (13), first buckle (9) set up the side at the cover body (13) with second buckle (10) symmetry, lamp stand (6) are in the same place through draw-in groove (7), first buckle (9), second buckle (10) and cover body (13) fixed joint.

5. The backlight source for the LED display screen of the industrial control instrument as claimed in claim 1, wherein: the reflector (4) further comprises a reflecting layer (14), and the reflecting layer (14) is coated on the inner wall of the cover body (13).