An LED light source board with a sealing mechanism

Abstract

This utility model discloses an LED light source board with a sealing mechanism, belonging to the field of LED lighting technology. It includes a base box, a light source placement box, and a light source board. The top surface of the base box has a groove, and the light source placement box is fixedly connected inside the base box. The outer wall of the light source placement box is threaded. It also includes a sealing mechanism forming multiple seals and a heat dissipation structure connected to the light source board. The sealing mechanism includes a glass cover and a threaded cover. The glass cover is positioned above the base box, and the edge of the glass cover seals against the groove, forming an outer seal. This utility model significantly improves the waterproof and moisture-proof performance of the device through its inner and outer double sealing structure. Simultaneously, through a complete heat dissipation path, it solves the problem of heat accumulation inside the sealed cavity, ensuring that the LED light source can efficiently dissipate heat and operate stably even in harsh environments.

Description

Technical Field

[0001] This utility model relates to the field of LED lighting technology, and in particular to an LED light source board with a sealing mechanism. Background Technology

[0002] LED light source boards have been widely used in indoor and outdoor lighting, special lighting and display fields due to their advantages such as high luminous efficiency, low energy consumption and long service life. However, in many practical application scenarios, such as outdoors, bathrooms, cold storage or industrial dust environments, LED light source boards must face the corrosion of water vapor, humid air and dust. These external factors can seriously threaten the stability and safety of their internal electronic components.

[0003] Existing technologies typically employ hermetically sealed encapsulation for LED light source boards, using sealing covers and sealing strips to isolate the light source board from the external environment, achieving waterproof, moisture-proof, and dustproof effects. However, while this sealed design solves the protection problem, it also introduces a new and more severe technical challenge. LED chips generate a large amount of heat during operation. In a completely sealed cavity, this heat cannot be effectively dissipated through conventional air convection, causing heat to accumulate rapidly inside the sealed cover, resulting in a sharp increase in the operating temperature of the LED light source and its driving circuitry.

[0004] Prolonged operation at high temperatures severely accelerates the light decay of LED chips, reduces luminous efficiency, and greatly shortens their lifespan, potentially even causing permanent damage to the LED lamp in a short period. Therefore, how to efficiently dissipate the heat generated by the LED light source inside the sealed cavity while achieving a high level of reliable sealing has become a core problem that needs to be solved in this field.

[0005] Therefore, this utility model proposes an LED light source board with a sealing mechanism to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides an LED light source board with a sealing mechanism, which aims to improve the problems in the prior art, such as the simple sealing structure, poor waterproof and moisture-proof effect, heat accumulation and poor heat dissipation in the sealed environment, which makes the light source easy to be damaged due to overheating.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: The present invention provides an LED light source board with a sealing mechanism, including a base box, a light source placement box and a light source board. The top surface of the base box is provided with a groove, the light source placement box is fixedly connected to the base box, and the outer wall of the light source placement box is provided with threads. The light source board is installed in the light source placement box. As well as a sealing mechanism that forms multiple seals and a heat dissipation structure connected to the light source board; The sealing mechanism includes a glass cover and a threaded cover. The glass cover is positioned above the bottom box, and the edge of the glass cover is sealed to the groove to form an outer seal. The threaded cover has an internal thread, and the threaded cover is connected to the thread of the light source placement box through the internal thread to form an inner seal. Furthermore, the heat dissipation structure includes a heat sink, a heat pipe, and a thermally conductive silicone layer. The upper surface of the heat sink is attached to the lower surface of the light source board. The heat pipe is disposed below the heat sink. The thermally conductive silicone layer fills and connects between the lower surface of the heat sink and the upper surface of the heat pipe. Preferably, an annular sealing strip is fixed inside the threaded cover along the circumference of the internal thread; Preferably, a glass sheet for light transmission is fixed to the top of the threaded cover; Preferably, the bottom box includes a base, and the groove is formed on the base; Preferably, a fixing plate is fixed on the inner wall of the light source placement box, and a retaining plate extends from the side wall of the light source plate. The light source plate is rotated so that the retaining plate is engaged and fixed with the fixing plate. Preferably, a first semi-circular friction strip is provided on the surface of the fixing plate facing the card plate, and a second semi-circular friction strip is provided on the surface of the card plate facing the fixing plate. The first semi-circular friction strip and the second semi-circular friction strip rub against each other when they are engaged. Preferably, the LED light source board with the sealing mechanism further includes an LED light source assembly; Preferably, the LED light source assembly includes the light source board and a plurality of LEDs fixed on the upper surface of the light source board.

[0008] This utility model has the following beneficial effects: 1. This utility model, by setting an inner sealing structure consisting of a threaded cover, a sealing strip and a glass sheet, and an outer sealing structure consisting of a glass cover and a groove in the bottom box, together form a multi-layer seal, which solves the problems of existing LED light source boards having a single sealing structure, poor waterproof and moisture-proof effect, and easy damage due to moisture intrusion. It achieves excellent waterproof and moisture-proof effect, and significantly improves the working reliability and service life of the light source board in humid or harsh environments.

[0009] 2. This utility model, by setting a heat dissipation path consisting of a heat sink, a thermally conductive silicone layer, and a heat pipe below the light source board, allows heat to be efficiently dissipated from the light source board through the heat sink and thermally conductive silicone layer, and finally through the heat pipe. This solves the problem that when LED light source boards work in a sealed environment, heat is difficult to dissipate and accumulates excessively, leading to overheating damage and severe light decay of the light source. It achieves a highly efficient and timely heat dissipation effect, ensuring that the LED lamp can work stably even in a sealed cavity, and effectively preventing heat accumulation from damaging the light source.

[0010] 3. This utility model solves the problems of existing light source boards being not firmly fixed, easily loosened, or having a complicated installation process by setting a card plate on the light source board and a fixing plate in the light source placement box. The surfaces of the two are provided with a first semi-circular friction strip and a second semi-circular friction strip that cooperate with each other. The two are locked in place by rotation. This achieves the effect of convenient installation, reliable fixing and strong vibration resistance, which is convenient for production assembly and subsequent maintenance. Attached Figure Description

[0011] Figure 1 This is a perspective view of an LED light source board with a sealing mechanism proposed in this utility model; Figure 2 This is a schematic diagram of a light source placement box structure for an LED light source board with a sealing mechanism proposed in this utility model. Figure 3 This is a schematic diagram of a threaded cover structure for an LED light source board with a sealing mechanism proposed in this utility model. Figure 4 This is a schematic diagram of the fixing plate structure of an LED light source board with a sealing mechanism proposed in this utility model; Figure 5 This is a schematic diagram of the heat sink structure of an LED light source board with a sealing mechanism proposed in this utility model.

[0012] Legend: 1. Base box; 101. Base; 102. Groove; 2. Glass cover; 3. Sealing mechanism; 301. Threaded cover; 302. Sealing strip; 303. Internal thread; 304. Glass sheet; 4. Thread; 5. Light source placement box; 501. Fixing plate; 502. First semi-circular friction strip; 6. LED light source assembly; 601. Light source board; 602. LED lamp; 603. Card plate; 604. On the second semi-circular friction strip; 7. Heat sink; 8. Thermal conductive silicone layer; 9. Heat pipe. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Reference Figures 1-5 The present invention provides an embodiment of an LED light source board with a sealing mechanism, including a base box 1 and a light source placement box 5 fixedly connected inside the base box 1. The base box 1 serves as the mounting base for the entire device, and the light source placement box 5 is used to accommodate the subsequently installed light source board 601. The base box 1 includes a base 101, and the top surface of the base 101 is integrally formed with an upward-opening groove 102. The outer wall of the light source placement box 5 is machined with threads 4. It also includes a sealing mechanism 3 that forms multiple seals and a heat dissipation structure connected to the light source board 601. Through the synergistic effect of the sealing mechanism 3 and the heat dissipation structure, the internal LED light source assembly 6 can be waterproof and moisture-proof while efficiently dissipating heat. The sealing mechanism 3 includes a glass cover 2 forming an outer seal and a threaded cover 301 forming an inner seal. The glass cover 2 is placed above the base box 1, and the edge of the glass cover 2 is sealed and engaged with the groove 102 on the base 101, thereby forming a sealed protective structure. The threaded cover 301 is provided with an internal thread 303, which is threadedly connected to the thread 4 of the light source placement box 5 through the internal thread 303, forming a second sealing protective structure. The two sealing structures work together to improve the waterproof and moisture-proof performance of the entire device. The heat dissipation structure includes a heat sink 7, a heat pipe 9, and a thermally conductive silicone layer 8. In the installed state, the upper surface of the heat sink 7 is attached to the lower surface of the light source board 601 to quickly receive the heat generated by the light source board 601 during operation. The heat pipe 9 is located below the heat sink 7 to efficiently conduct the received heat to the outside of the device. The thermally conductive silicone layer 8 fills and connects between the lower surface of the heat sink 7 and the upper surface of the heat pipe 9. The thermally conductive silicone layer 8 can completely fill the microscopic gap between the heat sink 7 and the heat pipe 9, thereby establishing an unobstructed and efficient heat transfer path. An annular sealing strip 302 is fixed inside the threaded cover 301 along the circumference of the internal thread 303. When the threaded cover 301 is tightened with the thread 4 of the light source placement box 5 through the internal thread 303, the sealing strip 302 is compressed and tightly adhered to the end face of the light source placement box 5, thereby reliably sealing potential gaps. At the same time, a glass plate 304 for light transmission is fixed on the top of the threaded cover 301. The glass plate 304 is provided to allow the light emitted by the LED lamp 602 on the light source board 601 to pass through smoothly while ensuring the integrity of the inner layer seal. A fixing plate 501 is fixed on the inner wall of the light source placement box 5. A first semi-circular friction strip 502 is provided on the surface of the fixing plate 501 facing the clamping plate (603). Correspondingly, a clamping plate 603 extends from the side wall of the light source plate 601. A second semi-circular friction strip 60 is provided on the surface of the clamping plate 603 facing the fixing plate (501). During installation, the light source plate 601 is placed into the light source placement box 5 and rotated, so that the clamping plate 603 slides in and passes over the fixing plate 501. Finally, it is clamped and fixed by the friction between the first semi-circular friction strip 502 and the second semi-circular friction strip 604, which ensures the convenience of installation of the light source plate 601 and the high stability after fixing, and can resist external vibration. It further includes an LED light source assembly 6, which includes a light source board 601 and a plurality of LED lamps 602 fixed on the upper surface of the light source board 601. The LED lamps 602 are the light source of the entire device. As a preferred embodiment, in order to further improve the reliability and integrity of the inner layer seal, the structure of the threaded cover 301 is further optimized. Specifically, an annular sealing strip 302 is fixed in the circumference of the internal thread (303) inside the threaded cover 301, and a glass sheet 304 for light transmission is fixed on the top of the threaded cover 301 by means of inlay sealing. The sealing strip 302 provides elastic compression sealing when the threaded cover 301 is tightened, while the glass sheet 304 completes the rigid sealing of the top of the threaded cover 301.

[0015] The base box 1 specifically includes a base 101, and a groove 102 is directly formed on the base 101. This integrated structure provides a stable and precise fitting reference for the edge of the glass cover 2, effectively avoiding the decrease in sealing performance caused by structural deformation or loose connection. The fitting structure of the fixing plate 501 and the card plate 603 has been reinforced. The first semi-circular friction strip 502 on the surface of the fixing plate 501 facing the card plate (603) and the second semi-circular friction strip 604 on the surface of the card plate 603 facing the fixing plate (501) can be set as friction surfaces with micro-tooth or roughening treatment. When snapped together, the two friction surfaces rub against each other and generate a large static friction force, thereby achieving reliable self-locking. The LED light source assembly 6 specifically includes a light source board 601 as a circuit board, and multiple LEDs 602 fixed on the upper surface of the light source board 601 by surface mounting process. The light source board 601 integrates conductive paths for connecting and driving the LEDs 602.

[0016] Working principle: During assembly, the light source plate 601 of the LED light source assembly 6 is placed in the light source placement box 5. The light source plate 601 is rotated so that the clamping plate 603 on the light source plate 601 interacts with the fixing plate 501 in the light source placement box 5. The second semi-circular friction strip 604 on the clamping plate 603 rubs against and engages with the first semi-circular friction strip 502 on the fixing plate 501. Then, the threaded cover 301 is screwed onto the thread 4 of the light source placement box 5 through the internal thread 303. When screwed, the sealing strip 302 inside the threaded cover 301 is pressed, and at the same time, the top glass plate 304 completes the closure of the light transmission window, forming an inner seal. Finally, the glass cover 2 is placed on top of the bottom box 1 so that the edge of the glass cover 2 seals with the groove 102 on the bottom box 1. The groove 102 on the bottom box 1 is preferably opened on the base 101, thereby forming an outer seal. The inner seal and the outer seal together constitute a multi-layer sealing mechanism 3. When the LED light source board with the sealing mechanism is powered on, multiple LEDs 602 fixed on the upper surface of the light source board 601 emit light, and the light passes through the glass plate 304 and shines outward. At the same time, a large amount of heat generated by the LEDs 602 is transferred to the light source board 601. Since the upper surface of the heat sink 7 is attached to the lower surface of the light source board 601, the heat is quickly conducted to the heat sink 7. The heat continues to pass through the thermally conductive silicone layer 8, which fills and connects the lower surface of the heat sink 7 and the upper surface of the heat pipe 9. The thermally conductive silicone layer 8 efficiently transfers the heat to the heat pipe 9. Finally, the heat pipe 9 conducts the heat from the sealed cavity to the outside, ensuring that the LEDs 602 can still work stably in a sealed environment.

Claims

1. An LED light source board with a sealing mechanism, comprising: The base box (1), the light source placement box (5), and the light source plate (601) are provided with a groove (102) on the top surface of the base box (1), the light source placement box (5) is fixedly connected to the base box (1), and the outer wall of the light source placement box (5) is provided with a thread (4), and the light source plate (601) is installed in the light source placement box (5). The feature is that it further includes a sealing mechanism (3) forming multiple seals and a heat dissipation structure connected to the light source plate (601); The sealing mechanism (3) includes a glass cover (2) and a threaded cover (301). The glass cover (2) is placed above the bottom box (1), and the edge of the glass cover (2) is sealed to the groove (102) to form an outer seal. The threaded cover (301) has an internal thread (303) inside. The threaded cover (301) is threaded to the thread (4) of the light source placement box (5) through the internal thread (303) to form an inner seal. The heat dissipation structure includes a heat sink (7), a heat pipe (9), and a thermally conductive silicone layer (8). The upper surface of the heat sink (7) is attached to the lower surface of the light source plate (601). The heat pipe (9) is disposed below the heat sink (7). The thermally conductive silicone layer (8) fills and connects between the lower surface of the heat sink (7) and the upper surface of the heat pipe (9).

2. The LED light source board with a sealing mechanism according to claim 1, characterized in that: The inside of the threaded cover (301) is fixed with an annular sealing strip (302) along the circumference of the internal thread (303).

3. An LED light source board with a sealing mechanism according to claim 2, characterized in that: The top of the threaded cover (301) is fixed with a glass plate (304) for light transmission.

4. An LED light source board with a sealing mechanism according to claim 1, characterized in that: The bottom box (1) includes a base (101), and the groove (102) is formed on the base (101).

5. An LED light source board with a sealing mechanism according to claim 1, characterized in that: A fixing plate (501) is fixed on the inner wall of the light source placement box (5), and a card plate (603) extends from the side wall of the light source plate (601). The light source plate (601) is rotated so that the card plate (603) is engaged and fixed with the fixing plate (501).

6. An LED light source board with a sealing mechanism according to claim 5, characterized in that: A first semi-circular friction strip (502) is provided on the surface of the fixing plate (501) facing the clamping plate (603), and a second semi-circular friction strip (604) is provided on the surface of the clamping plate (603) facing the fixing plate (501). The first semi-circular friction strip (502) and the second semi-circular friction strip (604) rub against each other when they are engaged.

7. An LED light source board with a sealing mechanism according to claim 1, characterized in that: The LED light source board with a sealing mechanism also includes an LED light source assembly (6).

8. An LED light source board with a sealing mechanism according to claim 7, characterized in that: The LED light source assembly (6) includes the light source board (601) and a plurality of LED lights (602) fixed on the upper surface of the light source board (601).

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