Backlight module for accelerating heat dissipation speed of LED lamp and liquid crystal display screen

Abstract

The utility model discloses a backlight module and a liquid crystal display capable of accelerating the heat dissipation speed of an LED lamp, the backlight module capable of accelerating the heat dissipation speed of the LED lamp comprises a lower iron frame, a rubber frame, an FPC and an LED lamp strip, the lower iron frame comprises a bottom plate and a side wall extending upwards from the edge of the bottom plate; the rubber frame is arranged on the edge of the bottom plate and abuts against the side wall, and a first avoiding groove and a second avoiding groove located above the first avoiding groove are formed in the bottom of the rubber frame; the FPC is pasted and fixed at the first avoiding groove of the rubber frame through the double-sided adhesive tape; the LED light bar is fixed to the upper surface of the FPC and located at the second receding groove. A through hole is formed in the surface of the bottom plate at the LED light bar, a radiating fin is fixed on the upper surface of the bottom plate at the through hole, and the radiating fin completely covers the through hole. According to the backlight module, heat of the LED light bar can be rapidly transmitted to the lower iron frame through the cooling fins and then rapidly dissipated into air through the through holes of the lower iron frame, the heat is prevented from being blocked by the lower iron frame, the through holes are completely covered with the cooling fins, and dust can be prevented from entering the backlight module.

Description

TECHNICAL FIELD

[0001] The utility model relates to a display technical field more specifically, relate to a kind of backlight module and liquid crystal display that accelerate the heat dissipation speed of LED lamp. BACKGROUND

[0002] With the requirement of market for the brightness of liquid crystal display more and more high, the number of LED lamp in LED light bar on backlight module is also more and more, lead to the power consumption of LED light bar is more and more big, such that backlight module will appear the phenomenon of heating after using certain time, to affect user experience, reduce the competitiveness of product. INVENTION CONTENTS

[0003] The utility model solves the technical problem that how to accelerate the heat dissipation speed of LED lamp, to avoid the phenomenon of heating of backlight module after using certain time, improve user's use experience, improve the competitiveness of product.

[0004] The technical problem to be solved by the utility model is realized by the following technical scheme:

[0005] To solve the above technical problem, the utility model provides a kind of backlight module that accelerates the heat dissipation speed of LED lamp, it includes lower iron stand, glue frame, FPC and LED light bar, the lower iron stand includes bottom plate and the side wall extended upwards from the edge of the bottom plate;The glue frame is set in the edge of the bottom plate and is in abutment with the side wall, the bottom of the glue frame is equipped with first avoiding slot and the second avoiding slot located above the first avoiding slot;The FPC is fixed by double-sided adhesive and is pasted at the first avoiding slot of the glue frame;The LED light bar is fixed on the upper surface of the FPC and is located at the second avoiding slot;The surface of the bottom plate at the LED light bar is equipped with through-hole, and the upper surface of the bottom plate at the through-hole is fixed with fin, and the fin completely covers the through-hole.

[0006] As a preferred embodiment of the utility model provided, the fin is graphite sheet.

[0007] As a preferred embodiment of the utility model provided, the fin is in abutment with the FPC.

[0008] As a preferred embodiment of the utility model provided, the cross-sectional area of the fin is greater than the cross-sectional area of the FPC.

[0009] As a preferred implementation form of the backlight module for accelerating the heat dissipation speed of the LED lamp provided by the utility model, the through hole has multiple, the position and quantity of the through hole correspond to the position and quantity of the LED lamp on the LED lamp strip.

[0010] As a preferred implementation form of the backlight module for accelerating the heat dissipation speed of the LED lamp provided by the utility model, one LED lamp on the LED lamp strip is provided with two through holes correspondingly.

[0011] As a preferred implementation form of the backlight module for accelerating the heat dissipation speed of the LED lamp provided by the utility model, the through hole has multiple, the position and quantity of the through hole correspond to the position and quantity of the LED lamp on the LED lamp strip.

[0012] As a preferred implementation form of the backlight module for accelerating the heat dissipation speed of the LED lamp provided by the utility model, the upper surface of the bottom plate is provided with a reflecting sheet, the upper portion of the reflecting sheet is provided with a light guide plate, and the upper portion of the light guide plate is provided with an optical film group.

[0013] The utility model provides a kind of liquid crystal display, it includes the backlight module for accelerating the heat dissipation speed of the LED lamp as described in any one of the above.

[0014] As a preferred implementation form of the liquid crystal display provided by the utility model, the upper portion of the adhesive frame is provided with a display module, and the upper portion of the display module is provided with a cover plate.

[0015] The utility model has the following beneficial effects:

[0016] Since the upper surface of the bottom plate at the through hole is fixed with the heat sink, the heat of the LED lamp strip can be quickly transmitted to the lower iron stand through the heat sink, and then the heat is accelerated to the air through the through hole of the lower iron stand, so that the heat is not blocked by the lower iron stand and dissipated, and since the heat sink completely covers the through hole, dust can be prevented from entering the interior of the backlight module. It accelerates the heat dissipation speed of the LED lamp, thereby avoiding the phenomenon of heating and scorching of the backlight module after a certain period of use, improving the user's use experience and improving the competitiveness of the product. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the scheme in the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The utility model provides a kind of backlight module for accelerating the heat dissipation speed of the LED lamp structure schematic view.

[0019] BRIEF DESCRIPTION OF DRAWINGS

[0020] Lower iron stand 1; glue frame 2; FPC 3; LED light bar 4; bottom plate 11; side wall 12; first avoiding groove 21; second avoiding groove 22; double-sided adhesive 5; through hole 13; heat sink 6; reflecting sheet 7; light guide plate 8; optical film group 9. DETAILED DESCRIPTION

[0021] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0022] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In addition, the terms "first", "second", "third" are only for description purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0024] The utility model provides a backlight module of accelerating the heat dissipation speed of LED lamp, it includes lower iron stand, gum frame, FPC and LED lamp strip, the lower iron stand includes bottom plate and the side wall of by bottom plate edge upward extension, the gum frame sets up the edge of bottom plate and with the side wall abuts, the bottom of gum frame is equipped with first avoiding groove and the second avoiding groove who is located first avoiding groove top, the FPC is pasted fixed through double -faced adhesive in first avoiding groove department of gum frame, the LED lamp strip is fixed in the second avoiding groove department on the upper surface of FPC, the surface of bottom plate is equipped with through -hole in LED lamp strip department, the upper surface of bottom plate is fixed with the fin in through -hole department, the fin completely covers through -hole.

[0025] Because the upper surface of bottom plate is fixed with the fin in through -hole department, can reach the heat of LED lamp strip through the fin fast to the lower iron stand, again through the through -hole of lower iron stand accelerates the heat dissipation to the air, avoids the heat to be blocked by lower iron stand and emits not to go out, and because the fin completely covers through -hole, can avoid dust to enter the inside of backlight module. It accelerates the heat dissipation speed of LED lamp to avoid the phenomenon that the backlight module appears after using a certain time and heats up, improves the use experience of user, improves the competitiveness of product.

[0026] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiment of the present application will be described clearly and completely in combination with the drawings. The utility model will be described in detail in combination with the drawings and examples, the example of the example is shown in the drawing, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar function. The examples described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as limiting the utility model.

[0027] Example 1, please refer to Figure 1The utility model provides a backlight module of accelerating the heat dissipation speed of LED lamp, it includes lower iron stand 1, glue frame 2, FPC 3 and LED lamp strip 4, lower iron stand 1 includes bottom plate 11 and by the side wall 12 of bottom plate 11 edge upward extension, glue frame 2 sets up in the edge of bottom plate 11 and with the side wall 12 abuts, the bottom of glue frame 2 is equipped with first avoiding groove 21 and the second avoiding groove 22 located first avoiding groove 21 top, FPC 3 is pasted fixed in the first avoiding groove 21 place of glue frame 2 through double -sided adhesive 5, LED lamp strip 4 is fixed in the upper surface of FPC 3 and is located the second avoiding groove 22 place, the surface of bottom plate 11 located LED lamp strip 4 place is equipped with through -hole 13, the upper surface of bottom plate 11 located through -hole 13 place is fixed with the fin 6, and the fin 6 completely covers through -hole 13, because the upper surface of bottom plate 11 located through -hole 13 place is fixed with the fin 6, can reach the heat of LED lamp strip 4 through the fin 6 fast transmission to lower iron stand 1, again through the through -hole 13 of lower iron stand 1 accelerates the heat dissipation to the air, avoids the heat to be blocked by lower iron stand 1 and emits, and because the fin 6 completely covers through -hole 13, can avoid dust to enter the inside of backlight module. It accelerates the heat dissipation speed of LED lamp to avoid the phenomenon that the backlight module appears to heat and scald after using a certain time, improves the use experience of user, improves the competitiveness of product.

[0028] Further, the fin 6 is a graphite sheet, which has good heat dissipation effect and high cost performance, can accelerate the heat dissipation speed of the LED lamp, and avoid heat accumulation.

[0029] Further, the fin 6 abuts against the FPC 3, so that the heat of the LED lamp of the LED lamp strip 4 can be quickly transmitted to the fin 6 through the FPC 3, to improve the heat dissipation speed and heat dissipation capacity.

[0030] Further, the cross-sectional area of the fin 6 is greater than that of the FPC 3, to improve the heat dissipation efficiency.

[0031] Further, the through hole 13 has a plurality of positions and quantities corresponding to the positions and quantities of the LED lamps on the LED lamp strip 4, and the outer dimensions of the through hole 13 are smaller than those of the LED lamps on the LED lamp strip 4. In other embodiments, one LED lamp on the LED lamp strip 4 corresponds to two through holes 13, so that the size of the through hole 13 can be smaller, to avoid large foreign matters from blocking the through hole 13, and to prevent large foreign matters from entering the inside of the backlight module through the through hole 13 when the fin 6 is damaged after a long period of use.

[0032] Further, the upper surface of the bottom plate 11 is provided with a reflective sheet 7, the upper side of the reflective sheet 7 is provided with a light guide plate 8, the upper side of the light guide plate 8 is provided with an optical film group 9, the optical film group 9 comprises a diffusion film, a lower light enhancement film and an upper light enhancement film which are sequentially and superimposed from bottom to top, and the LED lamps in the LED lamp strip 4 are aligned with the light entrance side of the light guide plate 8.

[0033] Embodiment 2, the liquid crystal display screen provided by the utility model, it includes the backlight module of accelerating LED lamp heat dissipation rate as any preceding, the upper side of the adhesive holder 2 is provided with display module, the upper side of the display module is provided with cover plate.

[0034] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be two element inside communication or two element mutual action relation, unless another definite limitation.For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned terms in the utility model according to specific circumstances.

[0035] Obviously, the above-described embodiments are only part of the embodiments of the present application, and not all the embodiments, the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application.The present application can be realized in many different forms, and contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.Although the present application is described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing specific embodiments can be modified, or some technical features can be replaced equivalently.For equivalent structures made by using the contents of the specification and drawings, direct or indirect application in other related technical fields, are also within the patent protection scope of the present application.

Claims

1. A backlight module for accelerating the heat dissipation of LED lamps, characterized in that, It includes: The lower frame includes a base plate and sidewalls extending upward from the edge of the base plate; A plastic frame is provided at the edge of the base plate and abuts against the side wall. The bottom of the plastic frame is provided with a first clearance groove and a second clearance groove located above the first clearance groove. FPC, which is fixed to the first clearance groove of the adhesive frame by double-sided adhesive; LED light strip, which is fixed to the upper surface of the FPC and located at the second clearance groove; A through hole is provided on the surface of the base plate located at the LED light strip, and a heat sink is fixed on the upper surface of the base plate located at the through hole, the heat sink completely covering the through hole.

2. The backlight module for accelerating the heat dissipation of LED lamps according to claim 1, characterized in that, The heat sink is a graphite sheet.

3. The backlight module for accelerating the heat dissipation of LED lamps according to claim 1, characterized in that, The heat sink abuts against the FPC.

4. The backlight module for accelerating the heat dissipation of LED lamps according to claim 1, characterized in that, The cross-sectional area of ​​the heat sink is larger than the cross-sectional area of ​​the FPC.

5. The backlight module for accelerating the heat dissipation of LED lamps according to claim 1, characterized in that, There are multiple through holes, and the position and number of the through holes correspond to the position and number of LEDs on the LED light strip.

6. The backlight module for accelerating the heat dissipation of LED lamps according to claim 5, characterized in that, Each LED on the LED strip has two corresponding through holes.

7. The backlight module for accelerating the heat dissipation of LED lamps according to claim 1, characterized in that, The external dimensions of the through hole are smaller than the external dimensions of the LEDs on the LED strip.

8. The backlight module for accelerating the heat dissipation of LED lamps according to claim 1, characterized in that, A reflective sheet is provided on the upper surface of the base plate, a light guide plate is provided above the reflective sheet, and an optical film group is provided above the light guide plate.

9. A liquid crystal display screen, characterized in that, It includes a backlight module for accelerating the heat dissipation of LED lamps as described in any one of claims 1-8.

10. The liquid crystal display screen according to claim 9, characterized in that, A display module is provided above the adhesive frame, and a cover plate is provided above the display module.

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