Heat insulation structure of backlight casting

Abstract

The heat insulation structure of the backlight casting comprises a backlight module, an LED lamp is arranged in the backlight module, a heat insulation film used for heat insulation is arranged on the side, facing the LED lamp, of the backlight module, and the heat insulation film is used for isolating heat of the LED lamp from being transmitted to the back face of the backlight module. The heat insulation structure has the effects that heat of the LED lamp is isolated from being transmitted to the back face of the backlight module, and the use feeling is prevented from being affected by high temperature of a rear shell of a product.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, in particular to a heat insulation structure of a backlight casting. Background Art

[0002] Liquid crystal display devices are widely used in various information, communication and consumer electronic products. The liquid crystal display module is mainly composed of a liquid crystal display screen and a backlight module. The backlight module provides light source for the liquid crystal display screen so that the liquid crystal display screen can display various colors.

[0003] In the prior art, an LED lamp for emitting light is provided in the backlight module to provide a light source for the liquid crystal display. When the LED lamp is working, heat will be generated. The side of the backlight module close to the LED lamp will heat up seriously, and the heat will be conducted to the product casing. When the customer uses the product, he will feel the heat when touching the back of the product, affecting the user experience. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a heat insulation structure for a backlight casting.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A heat insulation structure of a backlight casting comprises: a backlight module, wherein an LED lamp is arranged in the backlight module, and a heat insulation film is arranged on the side of the backlight module facing the LED lamp, wherein the heat insulation film is used to prevent the heat of the LED lamp from being transferred to the back side of the backlight module.

[0007] In one embodiment, the backlight module includes a middle iron frame and a rear iron frame, the middle iron frame and the rear iron frame form the concave backlight module, and the LED lamp is located in the middle iron frame and the rear iron frame.

[0008] In one embodiment, a light guide plate is arranged in the middle iron frame and the rear iron frame, a reflective sheet is arranged on the light incident surface of the light guide plate, the reflective sheet is arranged along the length direction of the light guide plate, the LED lamp is arranged on the light incident surface of the light guide plate, and the LED lamp is located below the light guide plate.

[0009] In one embodiment, the thermal insulation film is disposed between the reflective sheet and the rear iron frame, the thermal insulation film is disposed along the length direction of the reflective sheet, and the size of the thermal insulation film is adapted to the size of the reflective sheet.

[0010] In one embodiment, the lower end of the thermal insulation film extends to one side of the LED lamp.

[0011] In one embodiment, the reflective sheet and the thermal insulation film are arranged at a certain distance.

[0012] In one embodiment, the heat insulation film is adhered to a side of the rear iron frame facing the reflective sheet.

[0013] In one embodiment, the thermal insulation film includes a black PET tape, a uniform thermal insulation layer and a thermal conductive adhesive arranged in sequence, the thermal conductive adhesive is adhered to the rear iron frame, the uniform thermal insulation layer has three layers, and the uniform thermal insulation layer is made of a uniform thermal insulation material.

[0014] In one embodiment, the thickness of the thermal insulation film is 0.5 mm.

[0015] In one embodiment, a graphite sheet for heat dissipation is provided on one side of the lower end of the LED lamp close to the rear iron frame, and the graphite sheet is attached to the rear iron frame toward the lower end of the LED lamp.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] 1. The heat insulation structure of a backlight casting of the utility model is provided with a heat insulation film attached between the reflective sheet and the rear iron frame. When the heat generated by the LED lamp is absorbed by the heat insulation film, the heat is first evenly dissipated to the entire heat insulation film, and then the heat is isolated to prevent the heat from being further transferred to the rear iron frame, thereby ensuring that the back temperature of the backlight module will not be too high, and ensuring the user's use experience;

[0018] 2. The heat insulation structure of a backlight casting of the utility model dissipates the heat generated by the LED lamp by setting a graphite sheet, and the heat is transferred to the graphite sheet and dissipated through the lower end of the rear iron frame. The lower end of the rear iron frame is a position that users do not often touch during use, and can be used in conjunction with the heat dissipation holes of the product for heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0020] Figure 1 A schematic diagram of a side cross-sectional structure of a heat insulation structure of a backlight casting provided by the utility model;

[0021] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0022] Figure 3 The utility model provides a schematic structural diagram of a heat-insulating film in a heat-insulating structure of a backlight casting.

[0023] Description of the drawings: 10. Backlight module; 11. Middle iron frame; 12. Rear iron frame; 20. Light guide plate; 21. Reflective sheet; 30. LED lamp; 40. Thermal insulation film; 41. Black PET tape; 42. Uniform thermal insulation layer; 43. Thermal conductive adhesive; 50. Graphite sheet. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0025] A heat insulation structure for backlit castings, referring to Figure 1 , including a backlight module 10, the backlight module 10 includes a middle iron frame 11 and a rear iron frame 12, the middle iron frame 11 is hollow, one side of the rear iron frame 12 is open, and the middle iron frame 11 and the rear iron frame 12 together constitute a concave backlight module 10.

[0026] Reference Figure 1 and Figure 2 A light guide plate 20 is disposed in the middle iron frame 11 and the rear iron frame 12. The light guide plate 20 is disposed along the length direction of the rear iron frame 12. The light guide plate 20 is accommodated in the middle iron frame 11 and the rear iron frame 12. A reflective sheet 21 is disposed on the light incident surface of the light guide plate 20. The reflective sheet 21 is disposed along the length direction of the light guide plate 20. The reflective sheet 21 covers one side of the light guide plate 20 and is attached to the light guide plate 20.

[0027] Reference Figure 1 and Figure 2 An LED lamp 30 is also provided on the light incident surface of the light guide plate 20. The LED lamp 30 is located below the light guide plate 20. The light emitted by the LED lamp 30 passes through the light guide plate 20 or is reflected into the light guide plate 20 through the reflective sheet 21, and the light is emitted into the display screen through the light guide plate 20.

[0028] Reference Figure 1 and Figure 2 When the LED lamp 30 emits light, it generates heat, which is transferred to the rear iron frame 12 so that the back temperature of the backlight module 10 is high. In order to insulate the heat of the LED lamp 30, a heat insulation film 40 is provided on the side of the rear iron frame 12 facing the LED lamp 30. The heat insulation film 40 is located between the reflective sheet 21 and the rear iron frame 12, and is provided along the length direction of the reflective sheet 21. The size of the heat insulation film 40 is adapted to the size of the reflective sheet 21.

[0029] Reference Figure 1 and Figure 2The lower end of the heat-insulating film 40 extends to one side of the LED lamp 30 to insulate the heat emitted by the LED lamp 30 at a close distance. The heat-insulating film 40 is attached to the side of the rear iron frame 12 facing the reflective sheet 21. The reflective sheet 21 and the heat-insulating film 40 are arranged at a certain distance so that the heat-insulating film 40 will not affect the normal reflection effect of the light emitted by the LED lamp 30 when insulating the heat.

[0030] Reference Figure 3 The thermal insulation film 40 includes a black PET tape 41, a uniform thermal insulation layer 42 and a thermal conductive adhesive 43 which are arranged in sequence. The thermal conductive adhesive 43 is used to stick the thermal insulation film 40 to the rear iron frame 12. The black PET tape 41 is used to absorb the heat generated by the LED lamp 30. The uniform thermal insulation layer 42 between the black PET tape 41 and the thermal conductive adhesive 43 has three layers. The uniform thermal insulation layer 42 is made of a uniform thermal insulation material, which can evenly dissipate the heat generated by the LED lamp 30 and then insulate it. When the heat generated by the LED lamp 30 is absorbed by the thermal insulation film 40, it is first evenly dissipated to the entire thermal insulation film 40, and then the heat is isolated to prevent the heat from being further transferred to the rear iron frame 12, thereby ensuring that the temperature on the back of the backlight module 10 will not be too high, and the user has a good experience when using it.

[0031] Further, refer to Figure 1 and Figure 2 , the thickness of the thermal insulation film 40 is 0.5 mm.

[0032] Reference Figure 1 and Figure 2 A graphite sheet 50 for heat dissipation is provided on the side of the lower end of the LED lamp 30 near the rear iron frame 12. The graphite sheet 50 is attached to the rear iron frame 12 at a position facing the lower end of the LED lamp 30. The graphite sheet 50 is used to dissipate the heat generated by the LED lamp 30. The heat is transferred to the graphite sheet 50 and dissipated through the lower end of the rear iron frame 12. The lower end of the rear iron frame 12 is a position that users do not often touch during use, and can be used in conjunction with the heat dissipation holes of the product for heat dissipation.

[0033] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A heat insulation structure for a backlight casting, characterized in that: include: A backlight module (10), wherein an LED lamp (30) is arranged inside the backlight module (10), and a heat-insulating film (40) is arranged on a side of the backlight module (10) facing the LED lamp (30), wherein the heat-insulating film (40) is used to prevent heat from the LED lamp (30) from being transferred to the back side of the backlight module (10).

2. The heat insulation structure of a backlight casting according to claim 1, characterized in that: The backlight module (10) comprises a middle iron frame (11) and a rear iron frame (12), wherein the middle iron frame (11) and the rear iron frame (12) form the concave backlight module (10), and the LED lamp (30) is located inside the middle iron frame (11) and the rear iron frame (12).

3. The heat insulation structure of a backlight casting according to claim 2, characterized in that: A light guide plate (20) is arranged inside the middle iron frame (11) and the rear iron frame (12); a reflective sheet (21) is arranged on the light incident surface of the light guide plate (20); the reflective sheet (21) is arranged along the length direction of the light guide plate (20); the LED lamp (30) is arranged on the light incident surface of the light guide plate (20); and the LED lamp (30) is located below the light guide plate (20).

4. The heat insulation structure of a backlight casting according to claim 3, characterized in that: The heat insulation film (40) is arranged between the reflective sheet (21) and the rear iron frame (12); the heat insulation film (40) is arranged along the length direction of the reflective sheet (21); and the size of the heat insulation film (40) is adapted to the size of the reflective sheet (21).

5. The heat insulation structure of a backlight casting according to claim 4, characterized in that: The lower end of the heat insulation film (40) extends to one side of the LED lamp (30).

6. The heat insulation structure of a backlight casting according to claim 5, characterized in that: The reflective sheet (21) and the thermal insulation film (40) are arranged at a certain distance.

7. The heat insulation structure of a backlight casting according to claim 6, characterized in that: The heat insulation film (40) is adhered to a side of the rear iron frame (12) facing the reflective sheet (21).

8. The heat insulation structure of a backlight casting according to claim 7, characterized in that: The thermal insulation film (40) comprises a black PET tape (41), a uniform thermal insulation layer (42) and a thermal conductive adhesive (43) which are arranged in sequence. The thermal conductive adhesive (43) is adhered to the rear iron frame (12). The uniform thermal insulation layer (42) has three layers and is made of a uniform thermal insulation material.

9. The heat insulation structure of a backlight casting according to claim 8, characterized in that: The thickness of the thermal insulation film (40) is 0.5 mm.

10. The heat insulation structure of a backlight casting according to claim 3, characterized in that: A graphite sheet (50) for heat dissipation is provided on a side of the lower end of the LED lamp (30) close to the rear iron frame (12), and the graphite sheet (50) is attached to a position of the rear iron frame (12) facing the lower end of the LED lamp (30).

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