CN214201997U

CN214201997U - Direct type low-energy-consumption LED backlight source for eliminating lamp shadow

Info

Publication number: CN214201997U
Application number: CN202120089217.XU
Authority: CN
Inventors: 鲁玉根
Original assignee: Shenzhen Xinbaoliang Electronic Technology Co ltd
Current assignee: Shenzhen Xinbaoliang Electronic Technology Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-14
Anticipated expiration: 2031-01-14

Abstract

The utility model discloses a straight following formula low energy consumption LED backlight for eliminating lamp shadow, including mounting panel, LED backlight unit and encapsulation board, the top of mounting panel is provided with LED backlight unit, the top of LED backlight unit sets up the encapsulation board, the installation frame that has the style of calligraphy is extended to the top of mounting panel, the bottom integrated into one piece of encapsulation board have with the encapsulation frame, the encapsulation frame is fixed to be cup jointed in the periphery of installation frame, and the encapsulation frame passes through fixed screw and installation frame fixed connection; LED backlight unit includes LED lamp pearl, reflectance coating, diffusion barrier, prism spare and diffusion sheet down, a plurality of align to grid's mounting groove is seted up on the top of mounting panel, and LED lamp pearl embedded installation in the mounting groove, the top fixed mounting of mounting panel has the reflectance coating. This a straight following formula low energy consumption LED backlight for eliminating lamp shadow can not only make the effective heat dissipation cooling of LED lamp pearl, and can effectively eliminate the lamp shadow.

Description

Direct type low-energy-consumption LED backlight source for eliminating lamp shadow

Technical Field

The utility model belongs to the technical field of the LED backlight, concretely relates to straight following formula low energy consumption LED backlight for eliminating lamp shadow.

Background

The backlight source is a light source located behind a Liquid Crystal Display (LCD), and its luminous effect will directly affect the visual effect of the liquid crystal display module (LCM). The liquid crystal display does not emit light itself, and it displays a pattern or its result of modulating light. The LED backlight source mainly comprises a light source, a light guide plate, an optical film, a plastic frame and the like. The backlight source has the characteristics of high brightness, long service life, uniform light emission and the like. At present, there are three types of backlight sources, i.e., EL, CCFL and LED, which are classified into edge type and direct type according to the distribution position of the light source. As LCD modules are continuously developed to be brighter, lighter and thinner, the side-light CCFL backlight becomes the mainstream of backlight development at present. The LED backlight source has the advantages that the power consumption of the light sources (LED lamp beads) is high, heat is generated greatly, the service life of the LED backlight source can be influenced when the LED backlight source is used at high temperature for a long time, the LED backlight source can control the using quantity of the LED lamp beads due to control cost in the production process, the condition of uneven light can occur when the quantity of the LED lamp beads is less, and lamp shadows or light spots and the like exist.

Therefore, in view of the current situation, it is urgently needed to design and produce a direct type low-energy-consumption LED backlight source for eliminating lamp shadows so as to meet the needs of practical use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a straight following formula low energy consumption LED backlight for eliminating lamp shadow to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a direct type low-energy-consumption LED backlight source for eliminating lamp shadows comprises a mounting plate, an LED backlight module and a packaging plate, wherein the LED backlight module is arranged at the top end of the mounting plate, the packaging plate is arranged at the top end of the LED backlight module, a mounting frame in a shape of a Chinese character kou extends from the top end of the mounting plate, a packaging frame is integrally formed at the bottom end of the packaging plate, the packaging frame is fixedly sleeved on the periphery of the mounting frame, and the packaging frame is fixedly connected with the mounting frame through a fixing screw;

the LED backlight module comprises LED lamp beads, a reflecting film, a lower diffusion film, a prism piece and a light diffusion plate, wherein a plurality of uniformly arranged mounting grooves are formed in the top end of the mounting plate, the LED lamp beads are embedded in the mounting grooves, the reflecting film is fixedly mounted at the top end of the mounting plate, an embedded groove matched with the lower diffusion film is formed in the inner wall of the mounting frame, the lower diffusion film is embedded in the embedded groove, the prism piece is arranged above the lower diffusion film, a connecting groove matched with the prism piece is formed in the inner wall of the mounting frame, the prism piece is fixedly mounted in the connecting groove, the light diffusion plate is arranged above the prism piece and is fixedly connected with the inner wall of the mounting frame through screws;

the heat dissipation plate is characterized in that a heat dissipation cavity is arranged in the mounting plate, a heat conduction plate, a surface mount type temperature sensor, a controller and a semiconductor refrigeration piece are arranged in the heat dissipation cavity, the surface mount type temperature sensor and the semiconductor refrigeration piece are fixedly mounted at the bottom end of the heat conduction plate, and the surface mount type temperature sensor and the semiconductor refrigeration piece are respectively and electrically connected with the controller;

the top end of the reflecting film is provided with a plurality of ink printing areas, and the ink printing areas are printed with ink layers.

Preferably, the LED lamp bead light-emitting end is towards the diffusion barrier down, and the bottom and the heat-conducting plate laminating contact of LED lamp bead, the heat-conducting plate passes through screw and heat dissipation intracavity wall fixed connection.

Preferably, the prism member is composed of an upper prism sheet and a lower prism sheet, and the upper prism sheet and the lower prism sheet are orthogonally distributed above the lower diffusion film.

Preferably, reflection films are fixedly bonded to the four vertical inner walls of the mounting frame, and the reflection films are located below the lower diffusion film.

Preferably, the four corners of the package frame are fixedly bonded with protective sleeves.

The utility model discloses a technological effect and advantage: according to the direct type low-energy-consumption LED backlight source for eliminating the lamp shadows, the surface-mounted temperature sensor can monitor the temperature of the LED lamp beads in real time, and the LED lamp beads can be subjected to heat dissipation and cooling treatment by matching with the controller and the semiconductor refrigerating sheet, so that the service life of the whole body is prolonged; the light rays at the position close to the LED lamp bead are strong, so that the final light rays on the light diffusion plate are not uniform, the arrangement of the ink layer can reduce the reflectivity of the reflecting film at the strong position of the light rays, the lamp shadow can be effectively eliminated, and the uniform light is ensured; the LED backlight module is arranged in the mounting frame, and the packaging plate and the packaging frame are matched for use, so that the LED backlight module can be effectively protected, and the service life of the LED backlight module can be prolonged; the protective sleeve can effectively relieve the impact force when the whole body is impacted by the outside; this a straight following formula low energy consumption LED backlight for eliminating lamp shadow can not only make the effective heat dissipation cooling of LED lamp pearl, and can effectively eliminate the lamp shadow.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the present invention in a disassembled state;

fig. 3 is a cross-sectional view of the mounting plate of the present invention;

fig. 4 is a schematic structural view of the prism of the present invention;

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

In the figure: the LED backlight module comprises a mounting plate 1, an LED backlight module 2, a packaging plate 3, a mounting frame 4, a packaging frame 5, LED lamp beads 6, a reflecting film 7, a lower diffusion film 8, a prism piece 9, a light diffusion plate 10, a heat conduction plate 11, a semiconductor refrigerating sheet 12, an ink layer 13, an upper prism piece 14, a lower prism piece 15 and a protective sleeve 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless defined otherwise, all references to up, down, left, right, front, back, inner and outer directions herein are to be interpreted as referring to up, down, left, right, front, back, inner and outer directions in the drawings to which the invention is applied, and all references are hereby incorporated herein by reference.

The utility model provides a direct type low energy consumption LED backlight source for eliminating lamp shadow as shown in figures 1-5, including mounting panel 1, LED backlight module 2 and packaging plate 3, the top of mounting panel 1 is provided with LED backlight module 2, the top of LED backlight module 2 is provided with packaging plate 3, the top of mounting panel 1 extends the mounting frame 4 of square, the bottom of packaging plate 3 is integrated into one piece with packaging frame 5, packaging frame 5 is fixed to be cup jointed in the periphery of mounting frame 4, and packaging frame 5 is fixed with mounting frame 4 through the fixed screw and is connected, mounting frame 4 and packaging frame phase-match;

the LED backlight module 2 comprises LED lamp beads 6, a reflecting film 7, a lower diffusion film 8, a prism piece 9 and a light diffusion plate 10, wherein a plurality of uniformly arranged mounting grooves are formed in the top end of the mounting plate 1, the LED lamp beads 6 are embedded in the mounting grooves, the reflecting film 7 is fixedly mounted at the top end of the mounting plate 1, through holes matched with the LED lamp beads 6 are formed in the reflecting film 7, embedded grooves matched with the lower diffusion film 8 are formed in the inner wall of the mounting frame 4, the lower diffusion film 8 is embedded in the embedded grooves, the prism piece 9 is arranged above the lower diffusion film 8, a connecting groove matched with the prism piece 9 is formed in the inner wall of the mounting frame 4, the prism piece 9 is fixedly mounted in the connecting groove, the light diffusion plate 10 is arranged above the prism piece 9, and the light diffusion plate 10 is fixedly connected with the inner wall of the mounting frame 4 through screws;

the mounting plate 1 is internally provided with a heat dissipation cavity, a heat conduction plate 11, a patch type temperature sensor, a controller (not shown in the figure) and a semiconductor refrigerating piece 12 are arranged in the heat dissipation cavity, the bottom end of the heat conduction plate 11 is fixedly provided with the patch type temperature sensor and the semiconductor refrigerating piece 12, and the patch type temperature sensor and the semiconductor refrigerating piece 12 are respectively and electrically connected with the controller;

the top end of the reflecting film 7 is provided with a plurality of ink printing areas, and the ink printing areas are printed with ink layers 13.

Specifically, the luminous end of LED lamp pearl 6 is diffusion barrier 8 down, and the bottom and the 11 laminating contacts of heat-conducting plate of LED lamp pearl 6, heat-conducting plate 11 passes through screw and heat dissipation intracavity wall fixed connection.

Specifically, the prism member 9 is composed of an upper prism sheet 14 on the upper side and a lower prism sheet 15 on the lower side, and the upper prism sheet 14 and the lower prism sheet 15 are orthogonally distributed above the lower diffusion film 8.

Specifically, reflection films 7 are also fixedly bonded to four vertical inner walls of the mounting frame 4, and the reflection films 7 are located below the lower diffusion film 8.

Specifically, four corners of the package frame 5 are fixedly bonded with protective sleeves 16, and the outer surfaces of the protective sleeves 16 are arc-shaped.

According to the working principle, when the surface-mounted temperature sensor detects that the temperature of the heat conducting plate 11 is higher, the surface-mounted temperature sensor transmits real-time data to the controller, and controls the semiconductor refrigerating sheet 12 to refrigerate and help the LED lamp beads 6 to dissipate heat after receiving a data signal; the light is stronger as the distance from the LED lamp bead 6 is closer, so that a stronger light spot appears on the reflecting film 7 closer to the LED lamp bead 6, the light spot is reflected and then mapped on the light diffusion plate 10, a light shadow appears on the light diffusion plate 10, the reflectivity of the position can be reduced by the ink layer 13 on the reflecting film 7 closer to the lamp bead, the light intensity of the position is consistent with other positions, and the light shadow on the light diffusion plate 10 is eliminated.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a straight following formula low energy consumption LED backlight for eliminating lamp shadow, includes mounting panel (1), LED backlight unit (2) and packaging plate (3), its characterized in that: the LED backlight module is characterized in that an LED backlight module (2) is arranged at the top end of the mounting plate (1), a packaging plate (3) is arranged at the top end of the LED backlight module (2), a square mounting frame (4) extends from the top end of the mounting plate (1), a packaging frame (5) is integrally formed at the bottom end of the packaging plate (3), the packaging frame (5) is fixedly sleeved on the periphery of the mounting frame (4), and the packaging frame (5) is fixedly connected with the mounting frame (4) through a fixing screw;

the LED backlight module (2) comprises LED lamp beads (6), a reflecting film (7), a lower diffusion film (8), a prism piece (9) and a light-diffusing plate (10), the top end of the mounting plate (1) is provided with a plurality of uniformly arranged mounting grooves, the LED lamp beads (6) are embedded in the mounting grooves, the top ends of the mounting plates (1) are fixedly provided with reflecting films (7), the inner wall of the mounting frame (4) is provided with an embedded groove matched with the lower diffusion film (8), the lower diffusion film (8) is embedded in the embedding groove, a prism piece (9) is arranged above the lower diffusion film (8), and the inner wall of the mounting frame (4) is provided with a connecting groove matched with the prism piece (9), the prism piece (9) is fixedly arranged in the connecting groove, a light diffusion plate (10) is arranged above the prism piece (9), the light-diffusing plate (10) is fixedly connected with the inner wall of the mounting frame (4) through a screw;

a heat dissipation cavity is arranged in the mounting plate (1), a heat conduction plate (11), a patch type temperature sensor, a controller and a semiconductor refrigerating piece (12) are arranged in the heat dissipation cavity, the bottom end of the heat conduction plate (11) is fixedly provided with the patch type temperature sensor and the semiconductor refrigerating piece (12), and the patch type temperature sensor and the semiconductor refrigerating piece (12) are respectively and electrically connected with the controller;

the top end of the reflecting film (7) is provided with a plurality of ink printing areas, and the ink printing areas are printed with ink layers (13).

2. The direct-lit low-energy LED backlight source of claim 1, wherein the direct-lit low-energy LED backlight source is characterized by: LED lamp pearl (6) luminous end downwardly directed diffusion barrier (8), and the bottom and the heat-conducting plate (11) laminating contact of LED lamp pearl (6), heat-conducting plate (11) are through screw and heat dissipation intracavity wall fixed connection.

3. The direct-lit low-energy LED backlight source of claim 1, wherein the direct-lit low-energy LED backlight source is characterized by: the prism piece (9) is composed of an upper prism sheet (14) at the upper part and a lower prism sheet (15) at the lower part, and the upper prism sheet (14) and the lower prism sheet (15) are orthogonally distributed above the lower diffusion film (8).

4. The direct-lit low-energy LED backlight source of claim 1, wherein the direct-lit low-energy LED backlight source is characterized by: reflection films (7) are fixedly adhered to four vertical inner walls of the mounting frame (4), and the reflection films (7) are located below the lower diffusion film (8).

5. The direct-lit low-energy LED backlight source of claim 1, wherein the direct-lit low-energy LED backlight source is characterized by: and protective sleeves (16) are fixedly bonded at four corners of the packaging frame (5).