Light-shading glue composite type LED (light-emitting diode) backlight source

Abstract

The utility model relates to the technical field of LED backlight sources, in particular to a shading glue composite type LED backlight source. The LED lamp comprises a reflecting film attached to the bottom of a mounting frame, a light guide plate, an LED lamp strip, a diffusion film, a lower brightness enhancement film, an upper brightness enhancement film and shading glue are arranged at the upper end of the mounting frame, a heat dissipation assembly is arranged at the right end of the mounting frame, and the heat dissipation assembly comprises heat dissipation fins fixedly connected to the bottom of the inner wall of the mounting frame. The LED lamp strip is arranged in the mounting frame, the radiating fins penetrate through one side of the mounting frame, a heat conduction layer is arranged at the lower end of the LED lamp strip, the heat conduction layer is heat conduction glue smeared at the lower end of the LED lamp strip, by arranging the radiating assembly, when the LED lamp strip needs to be radiated, the LED lamp strip is pressed on the radiating fins during assembly, the LED lamp strip generates heat during working, the heat is conducted to the radiating fins, and the radiating effect of the LED lamp strip is improved. And the other part of the radiating fin is positioned outside the mounting frame, so that heat exchange is carried out through the radiating fin, and the temperature of the LED light bar during working is reduced as much as possible.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED backlight technology field especially relates to a light -proof glue composite type LED backlight source. BACKGROUND

[0002] LED backlight is used for liquid crystal display screen display, since the liquid crystal display screen display panel does not emit light itself, so need to borrow the light of LED backlight to display image normally, and the LED backlight is composed of the reflection film pasted at the bottom of the mounting frame, light guide plate, LED light bar, diffusion film, lower light -increasing piece, upper light -increasing piece and light -proof glue, when assembling, the reflection film is pasted at the bottom of the mounting frame, then the reflection film is pasted on the upper portion, then the light guide plate is pasted, then the LED light bar is installed, then the diffusion film, lower light -increasing piece, upper light -increasing piece and light -proof glue are pasted in turn, thereby forming the composite LED backlight, and the LED light bar is lighted, so that the light emitted by the LED light bar illuminates the liquid crystal display screen display panel.

[0003] The inventor found in daily work that when the LED backlight is used, the heat emitted by the light source will make the temperature at the light source too high when the LED light bar works for a long time, and if the LED lamp beads work for a long time under high temperature, not only the light source intensity can be reduced to affect normal display image, but also the service life of the LED lamp beads is reduced. UTILITY MODEL CONTENT

[0004] The utility model discloses a light -proof glue composite type LED backlight source to solve the problem that the temperature at the light source is too high when the LED light bar works for a long time, and if the LED lamp beads work for a long time under high temperature, not only the light source intensity can be reduced to affect normal display image, but also the service life of the LED lamp beads is reduced.

[0005] In order to realize the above-mentioned purpose, the utility model discloses a light -proof glue composite type LED backlight source, which comprises the reflection film pasted at the bottom of the mounting frame, the upper end of the mounting frame is provided with the light guide plate, LED light bar, diffusion film, lower light -increasing piece and upper light -increasing piece and light -proof glue, the right end of the mounting frame is provided with the heat dissipation component, and the heat dissipation component comprises the radiating fin fixedly connected to the inner wall bottom of the mounting frame.

[0006] The above-mentioned components reach the effect that when the LED light bar needs to be cooled, the LED light bar is pressed on the radiating fin during assembly, heat generated by the LED light bar during work is conducted to the radiating fin, another part of the radiating fin is located outside the mounting frame, heat exchange is carried out through the radiating fin, and the temperature during the work of the LED light bar is reduced as much as possible.

[0007] Preferably, the lower end of the LED light bar is provided with a heat-conducting layer, which is a heat-conducting glue applied on the lower end of the LED light bar.

[0008] The above component achieves the effect of assisting the heat generated by the LED light bar to be conducted to the heat sink by providing the heat-conducting layer.

[0009] Preferably, the upper end of the heat sink is provided in a wavy shape.

[0010] The above component achieves the effect of increasing the heat exchange area and improving the heat exchange efficiency by providing the upper end of the heat sink outside the mounting frame in a wavy shape.

[0011] Preferably, a plurality of evenly distributed heat dissipation holes are formed on one side of the inner wall of the mounting frame.

[0012] The above component achieves the effect of assisting the heat dissipation of the LED light bar by providing the heat dissipation holes.

[0013] Preferably, the upper end of the heat sink is provided with a fixing assembly for fixing the LED light bar.

[0014] The above component achieves the effect of fixing the LED light bar by providing the fixing assembly.

[0015] Preferably, the fixing assembly comprises fixing columns fixedly connected to the upper end of the heat sink on both sides, and the lower end of the LED light bar is provided with a fixing groove.

[0016] The above component achieves the effect of fixing the LED light bar by dragging the LED light bar to make the fixing groove on the LED light bar clamped into the fixing column during assembly.

[0017] Preferably, the arc surface of the fixing column is provided with a plurality of evenly distributed protrusions.

[0018] The above component achieves the effect of fixing the LED light bar by dragging the LED light bar to make the fixing groove on the LED light bar clamped into the fixing column through the protrusions.

[0019] In summary, the present application has the following advantages:

[0020] The utility model discloses a heat dissipation component is set up, when needing to the heat dissipation of LED light bar, LED light bar is pressed on the fin when assembling, the heat of LED light bar work is conducted to the fin, and the other part of fin is located the outside of mounting frame, thereby through the heat exchange of fin, and the temperature of LED light bar work is reduced as far as possible the effect, solved due to the heat of light source emission when the long -time work of LED light bar, the temperature of light source place is too high, if LED lamp pearl long -time work under high temperature, not only can reduce light source intensity, influence normal display image, and can reduce the service life of LED lamp pearl. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0022] Figure 2 It is the three-dimensional structure schematic diagram of the heat dissipation component part of the utility model;

[0023] Figure 3 It is the three-dimensional structure schematic diagram of the heat dissipation component another angle part of the utility model;

[0024] Figure 4 It is the three-dimensional structure schematic diagram of the LED light bar of the utility model.

[0025] Legend: 1, reflective film; 2, heat dissipation component; 3, fixed component; 4, mounting frame; 5, light guide plate; 6, LED light bar; 7, diffusion film; 8, lower light enhancement sheet; 9, upper light enhancement sheet; 10, shading glue; 21, fin; 22, heat conducting layer; 23, heat dissipation hole; 24, wave shape; 31, fixed column. DETAILED DESCRIPTION

[0026] Referring to Figure 1 As shown in the utility model provides a technical scheme: a shading glue composite LED backlight source includes the reflective film 1 of sticking in the bottom of mounting frame 4, and the upper end of mounting frame 4 is provided with light guide plate 5, LED light bar 6, diffusion film 7, lower light enhancement sheet 8 and upper light enhancement sheet 9 and shading glue 10, and the right end of mounting frame 4 is provided with heat dissipation component 2.

[0027] Referring to Figure 2 And Figure 3As shown, in the embodiment: the heat dissipation assembly 2 includes the heat dissipation fin 21 fixedly connected to the bottom of the inner wall of the mounting frame 4, and the heat dissipation fin 21 penetrates through one side of the mounting frame 4. When it is necessary to dissipate heat for the LED light bar 6, the LED light bar 6 is pressed on the heat dissipation fin 21 during assembly. When the LED light bar 6 works, heat is generated and is conducted to the heat dissipation fin 21. Another part of the heat dissipation fin 21 is located outside the mounting frame 4, so that heat exchange is performed through the heat dissipation fin 21, thereby reducing the temperature of the LED light bar 6 as much as possible when the LED light bar 6 works. The lower end of the LED light bar 6 is provided with a heat conduction layer 22, which is heat-conducting glue applied to the lower end of the LED light bar 6. By arranging the heat conduction layer 22, the heat generated by the LED light bar 6 is conducted to the heat dissipation fin 21. The upper end of the heat dissipation fin 21 is provided in a wave shape 24. By arranging the wave shape 24 at the part of the heat dissipation fin 21 located outside the mounting frame 4, the heat exchange area is increased, thereby improving the heat exchange efficiency. The inner wall of the mounting frame 4 is provided with a plurality of evenly distributed heat dissipation holes 23. By arranging the heat dissipation holes 23, the heat dissipation of the LED light bar 6 is assisted.

[0028] Referring to Figure 2 As shown, in the embodiment: the heat dissipation fin 21 is provided with a fixing assembly 3 at the upper end, and the fixing assembly 3 is used for fixing the LED light bar 6. By arranging the fixing assembly 3, the LED light bar 6 is fixed. The fixing assembly 3 includes the fixing column 31 fixedly connected to the two sides of the upper end of the heat dissipation fin 21. The lower end of the LED light bar 6 is provided with a fixing groove. During assembly, the LED light bar 6 is dragged, so that the fixing groove on the LED light bar 6 is clamped into the fixing column 31, thereby being fixed. The circular arc surface of the fixing column 31 is provided with a plurality of evenly distributed protrusions. By arranging the protrusions, the LED light bar 6 is dragged, so that the fixing groove on the LED light bar 6 is clamped into the fixing column 31, thereby being fixed.

[0029] Working principle:

[0030] In assembling, the reflective film 1 is pasted on the bottom of the mounting frame 4, then the reflective film 1 is pasted on the upper part, then the light guide plate 5 is pasted, then the LED light bar 6 is installed, then the diffusion film 7, the lower light enhancement sheet 8, the upper light enhancement sheet 9, the light shielding glue 10 are pasted in sequence, so as to form a composite LED backlight source, by lighting the LED light bar 6, the light emitted by the LED light bar 6 illuminates the liquid crystal display panel, when it is needed to dissipate heat of the LED light bar 6, the LED light bar 6 is pressed on the heat sink 21 during assembling, heat generated by the LED light bar 6 during working is conducted to the heat sink 21, the other part of the heat sink 21 is located outside the mounting frame 4, so that heat exchange is carried out through the heat sink 21, and then the effect of reducing the temperature of the LED light bar 6 during working as much as possible is realized, by arranging the heat conduction layer 22, the heat generated by the LED light bar 6 is conducted to the heat sink 21, by arranging the heat sink 21 in the wave shape 24 at the position outside the mounting frame 4, the heat exchange area is increased, and then the heat exchange efficiency is improved, by arranging the heat dissipation hole 23, the heat dissipation of the LED light bar 6 is assisted, by arranging the fixing assembly 3, the LED light bar 6 is fixed, by arranging the protrusion, during assembling, the LED light bar 6 is dragged, so that the fixing slot on the LED light bar 6 is clamped into the fixing column 31, and then the LED light bar 6 is fixed.

[0031] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application. In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed connection, detachable connection or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediate medium; it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A light shielding composite type LED backlight source comprising a reflection film (1) attached to the bottom of a mounting frame (4), characterized in that: The upper end of the mounting frame (4) is provided with a light guide plate (5), an LED light bar (6), a diffusion film (7), a lower light enhancement sheet (8), an upper light enhancement sheet (9), and a light shielding glue (10), the right end of the mounting frame (4) is provided with a heat dissipation assembly (2), the heat dissipation assembly (2) comprises a heat dissipation fin (21) fixedly connected to the inner wall bottom of the mounting frame (4), and the heat dissipation fin (21) penetrates through one side of the mounting frame (4).

2. The light blocking composite type LED backlight source according to claim 1, characterized in that: The lower end of the LED light bar (6) is provided with a heat conduction layer (22), and the heat conduction layer (22) is heat conduction glue daubed on the lower end of the LED light bar (6).

3. The light blocking composite type LED backlight source according to claim 2, characterized in that: The upper end of the heat dissipation fin (21) is provided in a wave shape (24).

4. The light blocking composite type LED backlight source according to claim 3, characterized in that: A plurality of evenly distributed heat dissipation holes (23) are formed in one side of the inner wall of the mounting frame (4).

5. The light blocking composite type LED backlight source according to claim 4, characterized in that: The upper end of the heat dissipation fin (21) is provided with a fixing assembly (3), and the fixing assembly (3) is used for fixing the LED light bar (6).

6. The light blocking composite type LED backlight source according to claim 5, characterized in that: The fixing assembly (3) comprises fixing columns (31) fixedly connected to the two sides of the upper end of the heat dissipation fin (21), and the lower end of the LED light bar (6) is provided with a fixing groove.

7. The light blocking composite type LED backlight source according to claim 6, characterized in that: The arc surface of the fixing column (31) is provided with a plurality of evenly distributed protrusions.

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