CN209911714U

CN209911714U - Direct type backlight source

Info

Publication number: CN209911714U
Application number: CN201920605618.9U
Authority: CN
Inventors: 杨继军
Original assignee: Hubei Yixin Precision Manufacturing Co Ltd
Current assignee: Hubei Yixin Precision Manufacturing Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-01-07
Anticipated expiration: 2029-04-29

Abstract

The utility model discloses a straight following formula backlight, glue the frame including backplate and plastics, plastics glue the top position that the frame is located the backplate, backplate and plastics are glued and are connected with block mechanism between the frame, the inboard that plastics glued the frame is equipped with the dust-proof membrane, the last fixed surface of backplate installs the reflector plate, the even distribution of upper surface of reflector plate has a plurality of bumps, the last fixed surface of reflector plate installs the light guide plate, the equal fixed mounting in both ends of light guide plate has a plurality of lamp strips, the inboard fixed mounting of lamp strip has the fluorescent tube, the last fixed surface of light guide plate installs first diffuser plate, the last fixed surface of first diffuser plate installs the piece that adds lustre to, the upper surface of piece that adds lustre to is close to the equal fixed mounting in both sides position and has the light screen. A straight following formula backlight, can improve the stability that the backlight structure is connected, and can play the effect of heat dissipation protection to the inside component of backlight.

Description

Direct type backlight source

Technical Field

The utility model relates to a backlight field, in particular to straight following formula backlight.

Background

The backlight source is a light source located behind the liquid crystal display, the light emitting effect of the backlight source directly affects the visual effect of the liquid crystal display module, the liquid crystal display does not emit light, the backlight source displays figures or the light modulating result, and the selection of the light source is very important in the design of the backlight source. The used light source determines photoelectric parameters such as power consumption, brightness, color and the like of the backlight source, and also determines the characteristics such as the use condition, the service life and the like of the backlight source, and the direct type backlight source is a direct type backlight source; when the existing direct type backlight source is used, the stability of the connection of the backlight source structural part is not high, and the effect of heat dissipation protection on elements in the backlight source cannot be achieved.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a direct type backlight, which can effectively solve the problem of poor stability of the connection of the backlight structural member and the effect of heat dissipation protection for the internal components of the backlight.

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

a direct type backlight source comprises a back plate and a plastic frame, wherein the plastic frame is positioned above the back plate, a clamping mechanism is connected between the back plate and the plastic rubber frame, the inner side of the plastic rubber frame is provided with a dustproof film, the upper surface of the back plate is fixedly provided with a reflector plate, the upper surface of the reflector plate is uniformly distributed with a plurality of salient points, the upper surface of the reflector plate is fixedly provided with a light guide plate, both ends of the light guide plate are fixedly provided with a plurality of light bars, the inner side of the lamp strip is fixedly provided with a lamp tube, the upper surface of the light guide plate is fixedly provided with a first diffusion plate, the upper surface of the first diffusion plate is fixedly provided with a brightness enhancement film, the upper surface of the brightness enhancement film close to the two sides is fixedly provided with a shading plate, and the upper surface of the brightness enhancement sheet is fixedly provided with a second diffusion plate close to the middle position, and the bottom of the back plate is connected with a ventilation and heat dissipation device.

Preferably, the clamping mechanism comprises a protective frame, a clamping block, a threaded pin and a threaded hole, the protective frame is located at the outer side positions of the back plate and the plastic rubber frame, the clamping block is fixed at the inner side position of the protective frame and embedded into the plastic rubber frame, the threaded pin penetrates through the protective frame, the threaded pin is embedded into the back plate, and the threaded hole is formed in the protective frame and the back plate.

Preferably, the protective frame is embedded into the plastic rubber frame through the clamping block and is clamped and connected with the plastic rubber frame, and the protective frame is fixedly connected with the back plate through the threaded pins and the threaded holes which are mutually meshed.

Preferably, the ventilation and heat dissipation device comprises a hollowed-out heat dissipation plate, a movable cover plate and slide rails, wherein the hollowed-out heat dissipation plate is fixed at the bottom of the back plate, the movable cover plate is embedded in the back plate, and the slide rails are fixed on the outer surfaces of two sides of the movable cover plate.

Preferably, the inside of backplate is seted up with slide rail assorted spout, removable cover slides in the spout through the slide rail and is connected with backplate swing joint.

Compared with the prior art, the utility model discloses following beneficial effect has: this straight following formula backlight through the block mechanism that sets up, can make things convenient for the installation between the backlight structure and dismantle, can improve the stability that the backlight structure connects simultaneously, through the ventilation cooling device who sets up, can ventilate the heat dissipation at the backlight during operation to can play the effect of protection to the inside component of backlight.

Drawings

Fig. 1 is a schematic view of an overall structure of a direct type backlight according to the present invention;

fig. 2 is a partial exploded view of a back plate and a protective frame of a direct type backlight according to the present invention;

fig. 3 is a top view of a light bar and a light tube of a direct type backlight according to the present invention;

fig. 4 is a schematic structural view of a ventilation and heat dissipation mechanism of a direct type backlight source of the present invention.

In the figure: 1. a back plate; 2. plastic rubber frames; 3. a clamping mechanism; 301. a protective frame; 302. a clamping block; 303. a threaded pin; 304. a threaded hole; 4. a dust-proof film; 5. a reflective sheet; 6. salient points; 7. a light guide plate; 8. a light bar; 9. a lamp tube; 10. a first diffusion plate; 11. a brightness enhancement film; 12. a visor; 13. a second diffusion plate; 14. a ventilation and heat dissipation device; 1401. hollowing out the heat dissipation plate; 1402. a removable cover plate; 1403. a slide rail.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "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 to which the reference is made 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," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or 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.

As shown in fig. 1-4, a direct type backlight source includes a back plate 1 and a plastic frame 2, the plastic frame 2 is located above the back plate 1, a fastening mechanism 3 is connected between the back plate 1 and the plastic frame 2, a dustproof film 4 is disposed on an inner side of the plastic frame 2, a reflector 5 is fixedly mounted on an upper surface of the back plate 1, a plurality of bumps 6 are uniformly distributed on an upper surface of the reflector 5, a light guide plate 7 is fixedly mounted on an upper surface of the reflector 5, a plurality of light bars 8 are fixedly mounted at both ends of the light guide plate 7, a lamp tube 9 is fixedly mounted on an inner side of the light bar 8, a first diffusion plate 10 is fixedly mounted on an upper surface of the light guide plate 7, a brightness enhancement plate 11 is fixedly mounted on an upper surface of the first diffusion plate 10, light shielding plates 12 are fixedly mounted on positions of both sides of the brightness enhancement plate 11, and a second diffusion plate 13 is fixedly, the bottom of the back plate 1 is connected with a ventilation and heat dissipation device 14;

the clamping mechanism 3 is composed of a protective frame 301, a clamping block 302, a threaded pin 303 and a threaded hole 304, the protective frame 301 is located at the outer side positions of the back plate 1 and the plastic rubber frame 2, the clamping block 302 is fixed at the inner side position of the protective frame 301, the clamping block 302 is embedded into the plastic rubber frame 2, the threaded pin 303 penetrates through the protective frame 301, the threaded pin 303 is embedded into the back plate 1, and the threaded hole 304 is formed in the protective frame 301 and the back plate 1; the protective frame 301 is embedded into the plastic rubber frame 2 through the clamping block 302 and is clamped and connected with the plastic rubber frame 2, and the protective frame 301 is meshed with the threaded hole 304 through the threaded pin 303 and is fixedly connected with the back plate 1; the ventilation and heat dissipation device 14 comprises a hollow heat dissipation plate 1401, a movable cover plate 1402 and slide rails 1403, the hollow heat dissipation plate 1401 is fixed at the bottom of the back plate 1, the movable cover plate 1402 is embedded in the back plate 1, and the slide rails 1403 are fixed on the outer surfaces of two sides of the movable cover plate 1402; the inside of backplate 1 is seted up with slide rail 1403 assorted spout, and removable cover 1402 slides in the spout through slide rail 1403 and backplate 1 swing joint.

It should be noted that, when the utility model is used, the back plate 1 and the plastic frame 2 form the main frame of the whole direct type backlight, the lamp tube 9 on the lamp strip 8 emits light, the light is reflected by the reflector 5, the surface contact can be changed into point contact by the convex points 6 on the reflector 5, the friction between the light guide plate 7 and the reflector 5 can be reduced, the light transmission effect is increased, the light is diffused by the first diffusion plate 10, the intensity of the light is increased by the light intensifying plate 11, the light is diffused to the screen by the second diffusion plate 13, the light shielding plate 12 can effectively prevent the light leakage of the backlight, the dustproof film 4 can effectively prevent the dust from entering the inside of the backlight, the protective frame 301 is embedded into the plastic frame 2 through the clamping block 302 to be clamped with the plastic frame 2, meanwhile, the screw thread pin 303 is rotated, the protective frame 301 is fixed with the back plate 1 through the mutual meshing of the screw hole 304 and the screw block 302, can make things convenient for installation and dismantlement between the backlight structure spare, can improve the stability that the backlight structure spare is connected simultaneously, removable cover 1402 slides in the spout through slide rail 1403 and backplate 1 relative activity, can expose fretwork heating panel 1401, can ventilate the heat dissipation at the backlight during operation to can play the effect of protection to the inside component of backlight.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A direct type backlight source is characterized in that: the plastic rubber frame comprises a back plate (1) and a plastic rubber frame (2), wherein the plastic rubber frame (2) is located above the back plate (1), a clamping mechanism (3) is connected between the back plate (1) and the plastic rubber frame (2), a dustproof film (4) is arranged on the inner side of the plastic rubber frame (2), a reflector plate (5) is fixedly arranged on the upper surface of the back plate (1), a plurality of salient points (6) are uniformly distributed on the upper surface of the reflector plate (5), a light guide plate (7) is fixedly arranged on the upper surface of the reflector plate (5), a plurality of light bars (8) are fixedly arranged at two ends of the light guide plate (7), a lamp tube (9) is fixedly arranged on the inner side of each light bar (8), a first diffusion plate (10) is fixedly arranged on the upper surface of the light guide plate (7), and a brightness enhancement plate (11) is fixedly arranged on the upper surface of the, the light shading plates (12) are fixedly mounted on the positions, close to the two sides, of the upper surface of the light enhancement sheet (11), the second diffusion plate (13) is fixedly mounted on the position, close to the middle, of the upper surface of the light enhancement sheet (11), and the bottom of the back plate (1) is connected with a ventilation and heat dissipation device (14).

2. A direct type backlight according to claim 1, wherein: clamping mechanism (3) comprises protection frame (301), block piece (302), threaded pin (303) and screw hole (304), protection frame (301) are located the outside position of backplate (1) and plastics gluey frame (2), block piece (302) are fixed in the inboard position of protection frame (301), and block piece (302) embedding to the inside of plastics gluey frame (2), threaded pin (303) run through in the inside of protection frame (301), and threaded pin (303) embedding to the inside of backplate (1), screw hole (304) are seted up in the inside of protection frame (301) and backplate (1).

3. A direct type backlight according to claim 2, wherein: the protective frame (301) is embedded into the plastic rubber frame (2) through the clamping block (302) and is clamped and connected with the plastic rubber frame (2), and the protective frame (301) is meshed with the threaded hole (304) through the threaded pin (303) and is fixedly connected with the back plate (1).

4. A direct backlight according to any one of claims 1 to 3, wherein: the ventilation and heat dissipation device (14) is composed of a hollow heat dissipation plate (1401), a movable cover plate (1402) and slide rails (1403), the hollow heat dissipation plate (1401) is fixed at the bottom of the back plate (1), the movable cover plate (1402) is embedded in the back plate (1), and the slide rails (1403) are fixed on the outer surfaces of the two sides of the movable cover plate (1402).

5. A direct backlight according to claim 4, wherein: the inside of backplate (1) is seted up with slide rail (1403) assorted spout, removable cover (1402) slide in the spout through slide rail (1403) and backplate (1) swing joint.