Backlight structure capable of improving heat dissipation effect
By designing the buckle positions of the rubber rack and the iron rack in the backlight structure to avoid the LED light strip position, and combining single-sided adhesive and thermal conduction materials, the problem of difficult heat derivation of LED light strips is solved, achieving better heat dissipation and connection stability.
Patent Information
- Application Number
- CN202421960097.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-13
AI Technical Summary
In the existing backlight structure, the heat of the LED light strip is difficult to effectively deduce, resulting in the problem of excessive local temperature.
The buckle position design of the rubber rack and the iron rack is adopted. The buckle position is set to avoid the LED light strip position, and connected by a single side sticking to the intermediate area. The heat conduction is carried out in combination with graphite sheets and thermal glue to ensure that the connection stability does not affect heat dissipation.
It effectively improves the heat dissipation effect of the backlight structure, avoids the local temperature of the LED strips, and ensures the stability and heat dissipation performance of the backlight structure.
Smart Images
Figure CN223092529U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of backlight, in particular to a backlight structure for improving heat dissipation effect. Background Art
[0002] As the display screen has higher and higher requirements for brightness and the size design is getting bigger and bigger, the power consumption of the backlight is getting bigger and bigger, the heat generated by the backlight is also getting bigger and bigger, and the corresponding backlight has higher and higher requirements for heat dissipation. For the pursuit of high brightness, the side-entry backlight structure generally uses medium-power top-emitting LEDs. As the heat source of the backlight, the LED light bar is generally fixed on the heat dissipation aluminum frame, and the heat of the LED is conducted to the outside through the aluminum alloy. However, because the aluminum frame needs to be fixed to the middle frame through buckles, and the aluminum frame is generally a stamping part with a convex hull, when the LED position encounters the buckle, the heat of the LED cannot be well conducted through the aluminum alloy and accumulates, resulting in excessive temperature of the local LED. Utility Model Content
[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a backlight structure with improved heat dissipation effect.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A backlight structure for improving heat dissipation effect comprises: a glue frame and an iron frame that are interlocked, a buckle position for buckling and fixing is arranged between the glue frame and the iron frame, the glue frame and the iron frame are buckled and fixed by the buckle position, the buckle position is arranged on the periphery of the iron frame, an LED light bar is arranged in the iron frame, the LED light bar is located at the inner bottom of the iron frame, the LED light bar and the buckle position on the bottom side of the iron frame are arranged on the same side, and the glue frame and the buckle position on the bottom side of the iron frame are arranged to avoid the position of the LED light bar.
[0006] In one embodiment, one side of the LED light strip is attached to the inner bottom of the iron frame, and the LED light strip is arranged along the length direction of the iron frame.
[0007] In one embodiment, there are two buckle positions on the bottom side of the rubber frame and the iron frame, and the two buckle positions are respectively located near the two side edges of the iron frame.
[0008] In one embodiment, the buckle position is not provided in the middle area of the bottom side of the iron frame.
[0009] In one embodiment, the buckle position includes a protrusion arranged on the bottom side of the iron frame and a through hole opened on the plastic frame relatively thereto, and the protrusion of the iron frame is passed through the through hole of the plastic frame and buckled with the inner wall of the through hole.
[0010] In one embodiment, a fixing member is provided in the middle area of the bottom side of the plastic frame and the iron frame, and the fixing member is used to fixedly connect the plastic frame and the iron frame.
[0011] In one embodiment, the fixing member is a single-sided adhesive. One end of the single-sided adhesive is pasted to the bottom side of the plastic frame, and the other end of the single-sided adhesive is bent to the back of the iron frame and pasted on the back of the iron frame.
[0012] In one embodiment, an optical film, a light guide plate and a reflective sheet are sequentially arranged in the iron frame, and the LED light bar is located on one side of the light guide plate.
[0013] In one embodiment, an FPC is arranged in the iron frame, the LED light bar is welded on the FPC, the FPC is located on the bottom side of the LED light bar, and a thermal conductive adhesive for conducting heat is arranged between the FPC and the inner bottom of the iron frame.
[0014] In one embodiment, a graphite sheet for heat dissipation is arranged on the inner side of the iron frame. The graphite sheet is located on the side of the reflective sheet away from the light guide plate, the graphite sheet is attached to the inner side of the iron frame, and the lower end of the graphite sheet extends to one side of the LED light bar.
[0015] Compared with the prior art, the present utility model has at least the following advantages:
[0016] In a backlight structure for improving the heat dissipation effect of the present utility model, the buckle positions on the bottom side of the plastic frame and the iron frame are arranged at positions close to the two side edges, and there are no buckle positions in the middle area of the bottom side of the iron frame, so that the buckle positions are set to avoid the position of the LED light bar, and thus the buckle positions will not affect the heat dissipation of the LED light bar. The middle area of the bottom sides of the plastic frame and the iron frame is connected by a single-sided adhesive to ensure the connection stability between the plastic frame and the iron frame, so as not to affect the heat dissipation of the LED light bar while ensuring the connection between the plastic frame and the iron frame. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below.
[0018] Figure 1 It is a schematic structural diagram of a backlight structure for improving the heat dissipation effect provided by the present utility model;
[0019] Figure 2 It is a schematic structural diagram of a backlight structure for improving the heat dissipation effect provided by the present utility model;
[0020] Figure 3Schematic diagram of a backlight structure for improving heat dissipation effect provided by the present utility model;
[0021] Figure 4 Schematic diagram of a backlight structure for improving heat dissipation effect provided by the present utility model;
[0022] Figure 5 is Figure 4 Enlarged schematic diagram of part A in
[0023] Description of the drawings: 10, plastic holder; 11, through hole; 20, iron frame; 21, convex block; 30, buckle position; 40, LED light bar; 50, single-sided adhesive; 60, optical film; 70, light guide plate; 80, reflector; 90, FPC; 100, thermal conductive adhesive; 110, graphite sheet. Detailed implementation manners
[0024] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively with reference to the relevant drawings below.
[0025] A backlight structure for improving heat dissipation effect, referring to Figure 1 , includes a plastic holder 10 and an iron frame 20 that are buckled together. The plastic holder 10 is arranged in a square shape with an opening, and one side of the iron frame 20 is open. The plastic holder 10 wraps around the periphery of the iron frame 20 and is fixedly buckled with the iron frame 20.
[0026] Referring to Figure 2 , a buckle position 30 is provided between the plastic holder 10 and the iron frame 20, and the buckle position 30 is located on the periphery of the iron frame 20. There are multiple buckle positions 30, and the multiple buckle positions 30 are arranged along the circumferential direction of the outer periphery of the iron frame 20. The plastic holder 10 and the iron frame 20 are fixedly buckled through the buckle positions 30.
[0027] Referring to Figure 1 and Figure 2 , an LED light bar 40 is arranged inside the iron frame 20. One side of the LED light bar 40 is attached to the inner bottom of the iron frame 20, and the LED light bar 40 is arranged along the length direction of the iron frame 20. The buckle position 30 at the bottom side of the iron frame 20 and the LED light bar 40 are arranged on the same side. Therefore, the position setting of the buckle position 30 between the bottom side of the iron frame 20 and the plastic holder 10 relative to the LED light bar 40 will affect the heat dissipation of the LED light bar 40. Therefore, the buckle position 30 between the plastic holder 10 and the bottom side of the iron frame 20 is arranged to avoid the position of the LED light bar 40.
[0028] Furthermore, referring to Figure 2 , there are two buckle positions 30 between the plastic holder 10 and the bottom side of the iron frame 20, and the two buckle positions 30 are respectively located at positions close to the two edges of the iron frame 20 to avoid affecting the LED light bar 40 inside the iron frame 20. There is no buckle position 30 in the middle area of the bottom side of the iron frame 20, so that the buckle position 30 avoids the LED light bar 40.
[0029] Reference Figure 2 , the buckle 30 includes a convex block 21 provided on the bottom side of the iron frame 20 and through holes 11 oppositely opened on the rubber frame 10. The convex block 21 of the iron frame 20 passes through the through holes 11 of the rubber frame 10 and is buckled with the inner wall of the through holes 11. The two buckles 30 on the bottom side of the rubber frame 10 and the iron frame 20 are buckled by passing the convex block 21 through the through holes 11 to fix the rubber frame 10 and the iron frame 20 together.
[0030] Furthermore, referring to Figure 2 and Figure 3 , since there are only two buckles 30 provided between the bottom side of the rubber frame 10 and the iron frame 20, in order to avoid loosening between the rubber frame 10 and the iron frame 20, a fixing member is provided in the middle area between the bottom side of the rubber frame 10 and the iron frame 20. The fixing member is used to achieve a fixed connection between the rubber frame 10 and the iron frame 20, so as to connect the middle area of the bottom side of the rubber frame 10 and the iron frame 20, and enhance the connection stability between the rubber frame 10 and the iron frame 20.
[0031] Furthermore, referring to Figure 2 and Figure 3 , the fixing member is a single-sided adhesive 50. The adhesive side of the single-sided adhesive 50 faces one side of the rubber frame 10 and the iron frame 20. One end of the single-sided adhesive 50 is pasted on the bottom side of the rubber frame 10, and the other end of the single-sided adhesive 50 is bent to the back of the iron frame 20 and pasted on the back of the iron frame 20. The single-sided adhesive 50 pastes and fixes the rubber frame 10 and the iron frame 20 to ensure the connection stability between the rubber frame 10 and the iron frame 20.
[0032] Reference Figure 4 and Figure 5 , an optical film 60, a light guide plate 70 and a reflective sheet 80 are sequentially arranged in the iron frame 20. The optical film 60, the light guide plate 70 and the reflective sheet 80 are sequentially arranged in the opening of the iron frame 20. The LED light bar 40 is located on one side of the light guide plate 70. The light emitted by the LED light bar 40 is reflected by the reflective sheet 80 into the light guide plate 70 and then emitted through the optical film 60 to provide brightness for the display screen.
[0033] Furthermore, referring to Figure 4 and Figure 5 , an FPC 90 is provided in the iron frame 20, and the LED light bar 40 is welded on the FPC 90. The FPC 90 is used to connect with the customer host to ensure the normal use of the LED light bar 40.
[0034] Furthermore, referring to Figure 4 and Figure 5, the FPC 90 is located at the bottom side of the LED light bar 40. A heat-conducting adhesive 100 for conducting heat is provided between the FPC 90 and the inner bottom of the iron frame 20. The FPC 90 is connected to the iron frame 20 through the heat-conducting adhesive 100. The heat generated by the LED light bar 40 is transferred to the iron frame 20 through the heat-conducting adhesive 100 and released.
[0035] Further, referring to Figure 4 and Figure 5 , a graphite sheet 110 for heat dissipation is provided on the inner side of the iron frame 20. The graphite sheet 110 is located on the side of the reflector 80 away from the light guide plate 70. The graphite sheet 110 is attached to the inner side of the iron frame 20, and the lower end of the graphite sheet 110 extends to one side of the LED light bar 40. The graphite sheet 110 is used to absorb the heat generated by the LED light bar 40 and release it through the iron frame 20 to further dissipate the heat of the LED light bar 40, so that the temperature of the LED light bar 40 will not be too high.
[0036] By arranging the buckle 30 on the bottom side of the glue rack 10 and the iron frame 20 at positions close to both side edges, and no buckle 30 is provided in the middle area of the bottom side of the iron frame 20, the buckle 30 is arranged to avoid the position of the LED light bar 40, so that the buckle 30 will not affect the heat dissipation of the LED light bar 40. The middle area of the bottom side of the glue rack 10 and the iron frame 20 is connected by a single-sided adhesive 50 to ensure the connection stability between the glue rack 10 and the iron frame 20, so as to ensure the connection between the glue rack 10 and the iron frame 20 without affecting the heat dissipation of the LED light bar 40.
[0037] The above-described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.
Claims
1. A backlight structure for improving heat dissipation effect, characterized in that Comprising: A plastic frame (10) and an iron frame (20) that are fastened together. There are fastening positions (30) provided between the plastic frame (10) and the iron frame (20) for fastening and fixing. The plastic frame (10) and the iron frame (20) are fastened and fixed through the fastening positions (30). The fastening positions (30) are arranged on the periphery of the iron frame (20). An LED light strip (40) is provided inside the iron frame (20). The LED light strip (40) is located at the inner bottom side of the iron frame (20). The fastening positions (30) on the bottom side of the iron frame (20) and the LED light strip (40) are arranged on the same side. The fastening positions (30) on the bottom side of the plastic frame (10) and the iron frame (20) are arranged at positions avoiding the LED light strip (40).
2. The backlight structure for improving heat dissipation effect according to claim 1, characterized in that, One side of the LED light strip (40) is attached to the inner bottom side of the iron frame (20), and the LED light strip (40) is arranged along the length direction of the iron frame (20).
3. The backlight structure for improving heat dissipation effect according to claim 2, characterized in that, There are two fastening positions (30) on the bottom side of the plastic frame (10) and the iron frame (20), and the two fastening positions (30) are respectively located at positions near the two side edges of the iron frame (20).
4. The backlight structure for improving heat dissipation effect according to claim 3, characterized in that No fastening positions (30) are provided in the middle area of the bottom side of the iron frame (20).
5. The backlight structure for improving heat dissipation effect according to claim 4, characterized in that, The fastening position (30) includes a convex block (21) provided on the bottom side of the iron frame (20) and through holes (11) oppositely opened on the plastic frame (10). The convex block (21) of the iron frame (20) passes through the through holes (11) of the plastic frame (10) and is fastened to the inner wall of the through holes (11).
6. The backlight structure for improving heat dissipation effect according to claim 5, wherein, A fixing member is provided in the middle area of the bottom side of the plastic frame (10) and the iron frame (20), and the fixing member is used to achieve a fixed connection between the plastic frame (10) and the iron frame (20).
7. The backlight structure for improving heat dissipation effect according to claim 6, wherein, The fixing member is a single-sided adhesive (50). One end of the single-sided adhesive (50) is pasted to the bottom side of the plastic frame (10), and the other end of the single-sided adhesive (50) is bent to the back of the iron frame (20) and pasted to the back of the iron frame (20).
8. The backlight structure for improving heat dissipation effect according to claim 1, wherein, An optical film (60), a light guide plate (70) and a reflector (80) are sequentially arranged inside the iron frame (20), and the LED light strip (40) is located on one side of the light guide plate (70).
9. The backlight structure for improving heat dissipation effect according to claim 8, wherein, An FPC (90) is provided inside the iron frame (20). The LED light strip (40) is welded to the FPC (90). The FPC (90) is located at the bottom side of the LED light strip (40). A thermal conductive adhesive (100) for conducting heat is provided between the FPC (90) and the inner bottom side of the iron frame (20).
10. The backlight structure for improving heat dissipation effect according to claim 9, characterized in that, A graphite sheet (110) for heat dissipation is provided on the inner side of the iron frame (20). The graphite sheet (110) is located on the side of the reflector (80) away from the light guide plate (70). The graphite sheet (110) is attached to the inner side of the iron frame (20), and the lower end of the graphite sheet (110) extends to one side of the LED light strip (40).