LED substrate heat-conductive silicone grease jig

Abstract

The utility model relates to the field of LED substrate processing discloses LED substrate heat conducting silicone grease fixture, including fixed frame, the fixed frame is located the top surface of base, the inside fixed installation board of fixed frame, the top surface of installation board is equipped with two fixed holes, the inside fixed metal round plate of fixed hole, the top surface of metal round plate is equipped with a plurality of smearing holes, the top surface of base is detachably provided with the placing plate, the top surface of placing plate is equipped with two containing grooves. In the utility model, scrape the heat conducting silicone grease on the metal round plate, the heat conducting silicone grease will be filled into the inside of smearing hole, through the limitation of smearing hole inside space, can accurately control the amount of heat conducting silicone grease every time smearing, thereby ensuring the consistency of smearing thickness.

Description

Technical Field

[0001] This utility model relates to the technical field of LED substrate processing, specifically to LED substrate thermal grease fixtures. Background Technology

[0002] When an LED light is working, approximately 70%-80% of its electrical energy is converted into heat. If this heat cannot be dissipated in time, it will cause the junction temperature to rise, leading to a decrease in luminous efficacy (e.g., light decay accelerates by about 30% for every 10°C increase), a shortened lifespan (lifespan decays exponentially at high temperatures), and even failure. The substrate, as the carrier of the LED chip, needs to quickly conduct heat to the heat sink. Thermal grease fills the microscopic gaps between the substrate and the heat sink, significantly reducing interfacial thermal resistance and improving heat transfer efficiency.

[0003] In the existing technology, thermal grease is applied to the substrate by hand with a scraper, which has the following disadvantages: it is impossible to judge whether the thermal grease is applied evenly by visual inspection alone; the thickness of the application is inconsistent; if it is too thick, it increases thermal resistance; if it is too thin, it does not cover the entire substrate and affects heat dissipation. Utility Model Content

[0004] The purpose of this invention is to provide a thermal grease fixture for LED substrates to solve the problems that it is impossible to judge whether the thermal grease is evenly applied by visual inspection alone, the thickness of the grease is inconsistent, excessive thickness increases thermal resistance, and insufficient coverage affects heat dissipation.

[0005] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: an LED substrate thermal grease fixture, including a fixing frame, the fixing frame being located on the top surface of a base, an mounting plate being fixed inside the fixing frame, two fixing holes being opened on the top surface of the mounting plate, a metal circular plate being fixed inside the fixing holes, a plurality of application holes being opened on the top surface of the metal circular plate, and a placement plate being detachably provided on the top surface of the base, the placement plate having two receiving grooves on its top surface.

[0006] Preferably, a support plate is fixed to the rear end of the top surface of the base, and the support plate is rotatably connected to the fixed frame via a hinge.

[0007] Preferably, the inner bottom surface of the receiving groove is provided with a positioning hole, and a plurality of connecting plates are fixed on the inner wall surface of the positioning hole. Fixing bolts are inserted into the connecting plates, and the bottom end of the fixing bolts passes through the connecting plates and is threadedly connected to the base.

[0008] Preferably, the top surface of the base is provided with a sliding groove, and the top surface of the placement plate is provided with a splicing interface, and the sliding groove and the splicing interface are positioned corresponding to each other.

[0009] Preferably, the inner wall of the receiving groove has two snap-fit ​​grooves and a plurality of limiting grooves.

[0010] Preferably, a plurality of positioning plates are fixed on the top surface of the mounting plate, the top surface of the positioning plates is provided with positioning grooves, and a scraper plate is provided above the mounting plate, the scraper plate being slidably disposed with respect to the positioning grooves.

[0011] Compared with the prior art, the LED substrate thermal grease fixture adopting the above technical solution has the following advantages:

[0012] Beneficial effects:

[0013] 1. By applying thermal grease to a metal disc, the grease fills the inside of the application holes. The limited space inside the application holes allows for precise control of the amount of thermal grease applied each time, thus ensuring consistent application thickness.

[0014] 2. The mounting plate can be detachably fixed to the base using fixing bolts, ensuring that it is not easily loosened during use, and also allowing for easy disassembly and reinstallation. When the LED substrate is placed inside the receiving groove, the bottom of the LED substrate has a large space reserved because of the positioning hole, which reduces the contact area between the LED substrate and the bottom of the receiving groove, avoiding heat accumulation caused by excessive contact. If the LED substrate is pressed into the receiving groove by the mounting plate and there is a positional deviation, the operator can use the channel formed by the sliding groove and the splicing interface to insert a thin rod into the receiving groove to adjust the position of the LED substrate. After the thermal grease on the LED substrate is applied, the operator's two fingers will apply a squeezing force to both ends of the LED substrate through the locking groove, making it easy for the operator to remove the LED substrate from the receiving groove.

[0015] 3. When applying thermal grease, the staff will remove the squeegee from the positioning groove and use the bottom of the squeegee to spread the thermal grease evenly. After the application is completed, the squeegee will be put back into the positioning groove to avoid contaminating the top surface of the mounting plate with the thermal grease adhering to the squeegee. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0017] Figure 2 This is a breakdown diagram of an embodiment.

[0018] Figure 3 This is a schematic diagram of the disassembled mounting plate and metal disc in an embodiment.

[0019] Figure 4 This is a schematic diagram of the base and placement plate in an embodiment.

[0020] In the diagram: 1. Fixed frame; 2. Mounting plate; 3. Fixing hole; 4. Metal round plate; 5. Coating hole; 6. Base; 7. Placement plate; 8. Receiving groove; 9. Support plate; 10. Positioning hole; 11. Connecting plate; 12. Fixing bolt; 13. Positioning plate; 14. Positioning groove; 15. Scraper plate; 16. Sliding groove; 17. Joint; 18. Clip-on groove; 19. Limiting groove. Detailed Implementation

[0021] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1-3 As shown, the LED substrate thermal grease fixture includes a fixing frame 1, which is located on the top surface of the base 6. A mounting plate 2 is fixed inside the fixing frame 1. Two fixing holes 3 are opened on the top surface of the mounting plate 2. A metal circular plate 4 is fixed inside the fixing holes 3. Several application holes 5 are opened on the top surface of the metal circular plate 4. A placement plate 7 is detachably provided on the top surface of the base 6. Two receiving grooves 8 are opened on the top surface of the placement plate 7. A support plate 9 is fixed to the rear end of the top surface of the base 6. The support plate 9 is rotatably connected to the fixing frame 1 by a hinge.

[0023] In use, the staff will first place the LED substrate into the receiving groove 8, then the staff will fasten the fixing frame 1 on the top surface of the placement plate 7, so that the mounting plate 2 is attached to the top surface of the LED substrate. Then the staff will pour thermal grease onto the metal disc 4, and then spread the thermal grease evenly on the metal disc 4, so that the thermal grease fills the interior of the application hole 5. The thermal grease that enters the application hole 5 will be attached to the LED substrate by the downward pressure of the scraping plate 15. Finally, the fixing frame 1 and the LED substrate will be separated.

[0024] By applying thermal grease to the metal disc 4, the thermal grease will fill the interior of the application hole 5. The limited space inside the application hole 5 allows for precise control of the amount of thermal grease applied each time, thereby ensuring the consistency of the application thickness.

[0025] like Figure 2 and Figure 4 As shown, a positioning hole 10 is provided on the bottom surface of the receiving groove 8. Several connecting plates 11 are fixed on the inner wall of the positioning hole 10. Fixing bolts 12 are inserted into the connecting plates 11. The bottom end of the fixing bolts 12 passes through the connecting plates 11 and is threadedly connected to the base 6. A sliding groove 16 is provided on the top surface of the base 6. A splicing interface 17 is provided on the top surface of the placement plate 7. The sliding groove 16 and the splicing interface 17 are positioned correspondingly. Two snap-fit ​​grooves 18 are provided on the inner wall of the receiving groove 8. Several limiting grooves 19 are provided on the inner wall of the receiving groove 8.

[0026] During use, the mounting plate 7 can be detachably fixed to the base 6 using the fixing bolts 12, ensuring that it is not easily loosened during use and also allowing for easy disassembly and reinstallation. When the LED substrate is placed inside the receiving groove 8, the bottom of the LED substrate has a large space reserved by the positioning hole 10, which reduces the contact area between the LED substrate and the bottom of the receiving groove 8, avoiding heat accumulation caused by excessive contact. If the LED substrate is pressed into the receiving groove 8 by the mounting plate 2 and there is a positional deviation, the operator can use the channel formed by the sliding groove 16 and the splicing interface 17 to insert a thin rod into the receiving groove 8 to adjust the position of the LED substrate. After the thermal grease is applied to the LED substrate, the operator's two fingers will apply a squeezing force to both ends of the LED substrate through the locking groove 18, making it easy for the operator to remove the LED substrate from the receiving groove 8.

[0027] like Figure 3 As shown, a number of positioning plates 13 are fixed on the top surface of the mounting plate 2. The top surface of the positioning plate 13 is provided with a positioning groove 14. A scraper plate 15 is provided above the mounting plate 2. The scraper plate 15 and the positioning groove 14 are slidably disposed.

[0028] During use, when applying thermal grease, the operator will remove the squeegee 15 from the positioning groove 14. The bottom of the squeegee 15 can then be used to apply the thermal grease evenly. After application, the squeegee 15 will be placed back into the positioning groove 14 to prevent the thermal grease adhering to the squeegee 15 from contaminating the top surface of the mounting plate 2.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An LED substrate thermal grease fixture, comprising a fixing frame (1), said fixing frame (1) being located on the top surface of a base (6), characterized in that, The mounting plate (2) is fixed inside the fixed frame (1). The top surface of the mounting plate (2) has two fixing holes (3). The metal round plate (4) is fixed inside the fixing holes (3). The top surface of the metal round plate (4) has several application holes (5). The top surface of the base (6) is detachably provided with a placement plate (7). The top surface of the placement plate (7) has two receiving grooves (8).

2. The LED substrate thermal grease fixture according to claim 1, characterized in that: A support plate (9) is fixed to the rear end of the top surface of the base (6), and the support plate (9) is rotatably connected to the fixed frame (1) by a hinge.

3. The LED substrate thermal grease fixture according to claim 1, characterized in that: The inner bottom surface of the receiving groove (8) is provided with a positioning hole (10). Several connecting plates (11) are fixed on the inner wall of the positioning hole (10). Fixing bolts (12) are inserted on the connecting plates (11). The bottom end of the fixing bolts (12) passes through the connecting plates (11) and is threadedly connected to the base (6).

4. The LED substrate thermal grease fixture according to claim 1, characterized in that: The top surface of the base (6) is provided with a sliding groove (16), and the top surface of the placement plate (7) is provided with a splicing interface (17). The sliding groove (16) and the splicing interface (17) are positioned corresponding to each other.

5. The LED substrate thermal grease fixture according to claim 1, characterized in that: The inner wall of the receiving groove (8) has two snap-fit ​​grooves (18) and a plurality of limiting grooves (19).

6. The LED substrate thermal grease fixture according to claim 1, characterized in that: The top surface of the mounting plate (2) is fixed with several positioning plates (13), and the top surface of the positioning plate (13) is provided with positioning grooves (14). A scraper plate (15) is provided above the mounting plate (2), and the scraper plate (15) is slidably disposed with the positioning grooves (14).

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