CN218974738U

CN218974738U - Side-light type LED backlight

Info

Publication number: CN218974738U
Application number: CN202223558988.2U
Authority: CN
Inventors: 蒋燕红
Original assignee: Anhui Dixian Electronic Co ltd
Current assignee: Anhui Dixian Electronic Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-05
Anticipated expiration: 2032-12-30

Abstract

The utility model relates to the technical field of backlight sources, and discloses a side-light type LED backlight source, which comprises an outer frame, wherein a circuit board is fixedly arranged on the inner wall of the left side of the outer frame, an LED light source is arranged on the right side of the circuit board, movable plates are movably connected to the inner walls of the upper side and the lower side of the outer frame, first connecting strips are fixedly connected to the opposite sides of the two movable plates, and a light guide plate is fixedly connected to the other ends of the two first connecting strips. According to the side-light type LED backlight source, the first sliding block, the first sliding way, the pull rod, the clamping block, the square groove, the second sliding block and the second sliding way are arranged, the pull rod is pulled upwards to enable the clamping block to move upwards from the square groove, then the pull rod is moved leftwards or rightwards, the two sliding blocks slide leftwards or rightwards in the two sliding ways respectively, the light guide plate and the reflecting sheet are driven to move leftwards or rightwards, the distance between the light guide plate and the LED light source is adjusted, and therefore the effect that the light guide plate receives the LED light source is adjusted.

Description

Side-light type LED backlight

Technical Field

The utility model relates to the technical field of backlight sources, in particular to a side-light type LED backlight source.

Background

A backlight is a light source located behind a Liquid Crystal Display (LCD) and its lighting effect will directly affect the visual effect of the liquid crystal display module (LCM). At present, a light guide plate in a side-light type LED backlight source is usually fixedly arranged, the distance between the light guide plate and an LED cannot be adjusted, and in order to adjust the effect of the light guide plate for receiving the LED light source, the light guide plate needs to be rearranged, so that the operation is complicated. Therefore, it is necessary to design a side-light type LED backlight capable of adjusting the position of the light guide plate.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a side-light type LED backlight source, which has the advantages of adjustable distance between a light guide plate and an LED light source, convenient adjustment operation, placement fixation and the like, and solves the problems that the light guide plate in the prior side-light type LED backlight source is usually fixed to be placed, the distance between the light guide plate and the LED cannot be adjusted, the light guide plate needs to be placed again for adjusting the effect of the light guide plate for receiving the LED light source, and the operation is complicated.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a side-light type LED backlight, includes the outline, the left inner wall fixed mounting of outline has the circuit board, the LED light source is installed on the right side of circuit board, the equal swing joint of inner wall of both sides about the outline has the movable plate, two the equal fixedly connected with first connecting strip in one side that the movable plate is relative, two the other end fixedly connected with light guide plate of first connecting strip, the light guide plate is located the right side of LED light source, the top the first slider of top fixedly connected with of movable plate, first slide has been seted up at the top of outline, the inside sliding connection of first slider and first slide, the top activity grafting of first slider has the pull rod, the fixture block has been cup jointed to the side surface of pull rod, square groove has been seted up at the top of outline, square groove and the inside intercommunication of first slide, fixture block and the inside looks adaptation of square groove.

Preferably, two opposite sides of the movable plate are fixedly connected with second connecting strips, the other ends of the two second connecting strips are fixedly connected with reflecting plates, the reflecting plates are positioned on the back surfaces of the light guide plates, and the reflecting plates can synchronously move with the light guide plates, so that the adjustment operation of the side-light type LED backlight source is facilitated.

Preferably, the bottom fixedly connected with second slider of movable plate, the second slide has been seted up to the interior bottom wall of outline, the inside sliding connection of second slider and second slide, through the second slider with the interior second slide internal sliding of diapire of outline, the light guide plate and the stability of reflector plate in the outline of being convenient for.

Preferably, the top of first slider has seted up the perpendicular hole, the bottom and the inside activity grafting in perpendicular hole of pull rod, cooperate in the perpendicular hole of the bottom and first slider of pull rod, be convenient for remove the pull rod and make and drive first slider slip to the position adjustment operation of light guide plate is convenient for.

Preferably, a reset spring is fixedly connected to the center of the bottom of the clamping block, the bottom end of the reset spring is fixedly connected to the center of the top of the first sliding block, after the position of the light guide plate is translated, the pull rod is loosened to enable the elasticity of the reset spring to recover, the clamping block is pulled to move downwards into the square groove after adjustment, the clamping block is matched with the square groove in an inserting mode, at the moment, two moving plates in the outer frame cannot move, and the position of the light guide plate is fixed after the adjustment.

Compared with the prior art, the utility model provides a side-light type LED backlight source, which comprises the following components

The beneficial effects are that:

1. according to the side-light type LED backlight source, the first sliding block, the first sliding way, the pull rod, the clamping block, the square groove, the second sliding block and the second sliding way are arranged, the pull rod is pulled upwards to enable the clamping block to move upwards from the square groove, then the pull rod is moved leftwards or rightwards, the two sliding blocks slide leftwards or rightwards in the two sliding ways respectively, the light guide plate and the reflecting sheet are driven to move leftwards or rightwards, the distance between the light guide plate and the LED light source is adjusted, and therefore the effect that the light guide plate receives the LED light source is adjusted.

2. According to the side-light type LED backlight source, after the position of the light guide plate is shifted, the pull rod is loosened to enable the elastic force of the return spring to be recovered, the clamping block is pulled to move downwards into the square groove after adjustment, and the clamping block is matched with the square groove in an inserting mode, so that the two moving plates in the outer frame cannot move, the position of the light guide plate is fixed after the light guide plate is moved and adjusted, and the adjustment operation of the distance between the light guide plate and the LED light source is facilitated.

Drawings

FIG. 1 is a cross-sectional view of the structure of the present utility model;

FIG. 2 is an enlarged view of the structure of FIG. 1A according to the present utility model;

fig. 3 is a top view of the outer frame structure of the present utility model.

Wherein: 1. an outer frame; 2. a circuit board; 3. an LED light source; 4. a moving plate; 5. a first connecting bar; 6. a light guide plate; 7. a first slider; 8. a first slideway; 9. a pull rod; 10. a clamping block; 11. a square groove; 12. a second connecting bar; 13. a reflection sheet; 14. a second slider; 15. a second slideway; 16. and a return spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, a side-light type LED backlight source includes an outer frame 1, a circuit board 2 is fixedly mounted on the left inner wall of the outer frame 1, an LED light source 3 is mounted on the right side of the circuit board 2, movable plates 4 are movably connected to the inner walls of the upper and lower sides of the outer frame 1, first connecting strips 5 are fixedly connected to opposite sides of the two movable plates 4, a light guide plate 6 is fixedly connected to the other ends of the two first connecting strips 5, the light guide plate 6 is positioned on the right side of the LED light source 3, second connecting strips 12 are fixedly connected to opposite sides of the two movable plates 4, a reflecting sheet 13 is fixedly connected to the other ends of the two second connecting strips 12, a first slide block 7 is fixedly connected to the top of the top movable plate 4, a first slide way 8 is provided on the top of the outer frame 1, the first slide block 7 is slidably connected to the inside of the first slide way 8, the bottom of the bottom moving plate 4 is fixedly connected with a second slide block 14, the inner bottom wall of the outer frame 1 is provided with a second slide way 15, the second slide block 14 is in sliding connection with the inside of the second slide way 15, the top of the first slide block 8 is movably inserted with a pull rod 9, the top of the first slide block 7 is provided with a vertical hole, the bottom end of the pull rod 9 is movably inserted with the inside of the vertical hole, the side surface of the pull rod 9 is fixedly sleeved with a clamping block 10, the center of the bottom of the clamping block 10 is fixedly connected with a reset spring 16, the bottom end of the reset spring 16 is fixedly connected with the center of the top of the first slide block 7, the reset spring 16 is arranged, after the position of the light guide plate 6 is translated, the pull rod 9 is loosened to enable the reset spring 16 to recover to enable the clamping block 10 to be pulled to move downwards into the adjusted square groove 11, the clamping block 10 is matched with the square groove 11 in an inserting mode through the clamping block 10, the position of the light guide plate 6 and the position of the reflecting sheet 13 are fixed after moving and adjusting, thereby being convenient for the adjustment operation of the distance between the light guide plate 6 and the LED light source 3, the square groove 11 is formed at the top of the outer frame 1, the square groove 11 is communicated with the inside of the first slideway 8, the clamping block 10 is matched with the inside of the square groove 11, the first sliding block 7, the first slideway 8, the pull rod 9, the clamping block 10, the square groove 11, the second sliding block 14 and the second slideway 15 are arranged, the pull rod 9 is pulled upwards to enable the clamping block 10 to move upwards from the square groove 11, then the pull rod 9 is moved leftwards or rightwards, the two sliding blocks are respectively slid leftwards or rightwards in the two slideways, the light guide plate 6 and the reflecting sheet 13 are driven to move leftwards or rightwards, the distance between the light guide plate 6 and the LED light source 3 is adjusted, and the effect of the light guide plate 6 for receiving the LED light source is adjusted.

When the side-light type LED backlight is used, the pull rod 9 is pulled upwards to enable the clamping block 10 to move upwards from the square groove 11, then the pull rod 9 is moved leftwards or rightwards, the two sliding blocks respectively slide leftwards or rightwards in the two sliding ways to drive the light guide plate 6 and the reflecting sheet 13 to move leftwards or rightwards, the distance between the light guide plate 6 and the LED light source 3 is adjusted, the pull rod 9 is loosened after the proper position is adjusted to enable the elastic force of the reset spring 16 to be restored, the clamping block 10 is pulled downwards to the adjusted square groove 11, the two moving plates 4 in the outer frame 1 cannot move at the moment through the insertion fit of the clamping block 10 and the square groove 11, the positions of the light guide plate 6 and the reflecting sheet 13 are fixed after the adjustment, the side-light type LED backlight can move and adjust the positions of the light guide plate 6, the adjustment operation is simple and convenient, the adjustment mode of dismantling the light guide plate 6 and putting again is replaced, and the side-light type LED backlight is convenient to adjust and use.

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

Claims

1. The side-light type LED backlight comprises an outer frame (1), and is characterized in that: the LED lamp is characterized in that a circuit board (2) is fixedly arranged on the left inner wall of the outer frame (1), an LED light source (3) is arranged on the right side of the circuit board (2), the inner walls of the upper side and the lower side of the outer frame (1) are movably connected with a movable plate (4), two connecting strips (5) are fixedly connected to one sides of the movable plate (4) opposite to each other, two connecting strips (5) are fixedly connected with a light guide plate (6) at the other end, the light guide plate (6) is positioned on the right side of the LED light source (3), a first sliding block (7) is fixedly connected to the top of the movable plate (4), a first sliding rail (8) is arranged at the top of the outer frame (1), a pull rod (9) is movably inserted into the top of the first sliding block (7), a square groove (11) is formed in the top of the outer frame (1), and the square groove (11) is sleeved with the square groove (10) and is communicated with the square groove (11).

2. An edge-lit LED backlight as recited in claim 1, wherein: two opposite sides of the movable plate (4) are fixedly connected with second connecting strips (12), the other ends of the second connecting strips (12) are fixedly connected with reflecting sheets (13), and the reflecting sheets (13) are positioned on the back surface of the light guide plate (6).

3. An edge-lit LED backlight as recited in claim 1, wherein: the bottom of the movable plate (4) is fixedly connected with a second sliding block (14), a second slideway (15) is arranged on the inner bottom wall of the outer frame (1), and the second sliding block (14) is in sliding connection with the inside of the second slideway (15).

4. An edge-lit LED backlight as recited in claim 1, wherein: a vertical hole is formed in the top of the first sliding block (7), and the bottom end of the pull rod (9) is movably inserted into the vertical hole.

5. An edge-lit LED backlight as recited in claim 1, wherein: the center of fixture block (10) bottom department fixedly connected with reset spring (16), the bottom of reset spring (16) is fixed connection with the center department at first slider (7) top.