Illumination circuit board with heat dissipation structure

Abstract

The utility model relates to the technical field of circuit boards, in particular to an illumination circuit board with a heat dissipation structure, which comprises an illumination circuit board body, and a heat dissipation assembly used for accelerating heat dissipation of the illumination circuit board body is arranged at the top of the illumination circuit board body. Positioning assemblies used for being fixedly connected with the lighting circuit board body are arranged on the two sides of the heat dissipation assembly, and guide rails used for limiting the moving directions of the positioning assemblies are arranged in the positioning assemblies. After heat of the lighting circuit board body is transmitted to the heat conducting plate, the radiating fins at the top of the heat conducting plate increase the radiating area so as to accelerate the radiating speed, meanwhile, the fan blows air to the heat conducting plate, and the air flows through the radiating fins to cool the radiating fins and the heat conducting plate, so that the radiating speed is further accelerated, and the radiating effect is improved. Therefore, the heat dissipation speed of the lighting circuit board body is effectively improved, and the high-power use requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a lighting circuit board with a heat dissipation structure. Background Art

[0002] Light-emitting diodes (LEDs), as highly efficient light sources with numerous advantages such as environmental friendliness, energy conservation, and long lifespan, have been widely used in numerous fields. However, temperature has always been a significant factor affecting the lifespan of LED lamps. In existing technologies, LEDs are soldered to substrates, with heat dissipated through the LED pins. However, with the increasing integration of LEDs, which has resulted in smaller and more powerful lamps, and the increasing number of LEDs within a single fixture, the heat generated by these large numbers of LEDs cannot be fully dissipated through the LED pins, resulting in poor heat dissipation. Furthermore, water can easily enter the substrate wiring layer, damaging the substrate.

[0003] Application number: CN201820939526.X "Circuit board and lighting device", includes: a substrate, an insulating layer and a wiring heat dissipation layer; the upper surface of the substrate is provided with multiple recessed areas, and the multiple recessed areas respectively correspond to multiple light-emitting diodes, and the depth of the multiple recessed areas is less than the height of the multiple light-emitting diodes; the insulating layer and the wiring heat dissipation layer are sequentially covered on the upper surface of the substrate. By providing multiple recessed areas on one side of the substrate, the surface area of ​​the substrate is increased, thereby increasing the heat dissipation area of ​​the circuit board during operation. The multiple recessed areas respectively correspond to multiple light-emitting diodes, and the depth of the multiple recessed areas is less than the height of the multiple light-emitting diodes, so as to prevent the recessed areas from blocking the light emitted by the light-emitting diodes.

[0004] However, it is far from enough for the circuit board and the circuit board in the lighting device to dissipate heat by itself, and it cannot meet the requirements of high-power use. The heat dissipation speed needs to be improved. Utility Model Content

[0005] The purpose of the present invention is to provide a lighting circuit board with a heat dissipation structure to accelerate the heat dissipation speed and solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a lighting circuit board with a heat dissipation structure, comprising a lighting circuit board body, a heat dissipation assembly disposed on the top of the lighting circuit board body for accelerating heat dissipation from the lighting circuit board body, positioning assemblies disposed on both sides of the heat dissipation assembly for fixedly connecting the lighting circuit board body, and guide rails disposed within the positioning assemblies for limiting the movement direction of the positioning assemblies;

[0007] Among them, the heat dissipation component includes: a heat conducting plate, thermal grease is coated between the heat conducting plate and the lighting circuit board body, a plurality of groups of heat sinks are equidistantly arranged on the top of the heat conducting plate, a plurality of groups of ventilation holes are opened on the sides of the plurality of groups of heat sinks, the tops of the plurality of groups of heat sinks are fixedly connected to the bottom of the mounting plate, a mounting hole is opened on the top of the mounting plate, and a fan is installed on the hole wall of the mounting hole.

[0008] Preferably, the guide rail includes: a limiting slide rod, both ends of the limiting slide rod are fixedly connected to the side of the connecting plate, and one end of the connecting plate is fixedly connected to the side of the heat conducting plate.

[0009] Preferably, the positioning assembly includes a slider, a top of the slider is provided with a first through hole, and a side of the slider is provided with a second through hole.

[0010] Preferably, the hole wall of the second through hole is slidably sleeved on the outside of the limiting sliding rod, and the hole wall of the first through hole is slidably sleeved on the side of the vertical rod.

[0011] Preferably, the side portion of the top end of the vertical rod is threadedly connected to the inner ring of the screw sleeve, and the bottom end of the vertical rod is fixedly connected to the top of both ends of the positioning plate.

[0012] Preferably, a compression spring is provided between the screw sleeve and the slider, and the inner ring of the compression spring is slidably sleeved on the side of the vertical rod.

[0013] Preferably, the top of the positioning plate is fixedly connected to the bottom of the flexible protection pad, and the top of the flexible protection pad is movably connected to the bottom of the lighting circuit board body.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] In the present invention, after the heat of the lighting circuit board body is transferred to the heat conducting plate, the heat sink on the top of the heat conducting plate increases the heat dissipation area, thereby accelerating the heat dissipation speed. At the same time, the fan blows air to the heat conducting plate, and the air flows between the heat sinks to cool the heat sink and the heat conducting plate, further accelerating the heat dissipation speed, so that the heat dissipation speed of the lighting circuit board body is effectively improved to meet the requirements of high-power use.

[0016] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the heat dissipation component structure of the present utility model;

[0019] Figure 3 This is a schematic diagram of the slider structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the positioning component structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the guide rail structure of the present utility model.

[0022] In the figure: 1. Heat dissipation assembly; 11. Fan; 12. Mounting hole; 13. Mounting plate; 14. Heat sink; 15. Ventilation hole; 16. Heat conduction plate; 2. Positioning assembly; 21. Screw sleeve; 22. Vertical rod; 23. Compression spring; 24. Slider; 25. Positioning plate; 26. Flexible protective pad; 27. First through hole; 28. Second through hole; 3. Guide rail; 31. Connecting plate; 32. Limiting slide bar; 4. Lighting circuit board body. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-5 The utility model provides a technical solution: a lighting circuit board with a heat dissipation structure, comprising: a lighting circuit board body 4, a heat dissipation component 1 for accelerating the heat dissipation of the lighting circuit board body 4 is provided on the top of the lighting circuit board body 4, and positioning components 2 for fixedly connecting the lighting circuit board body 4 are provided on both sides of the heat dissipation component 1, and a guide rail 3 for limiting the moving direction of the positioning component 2 is provided inside the positioning component 2.

[0025] The heat dissipation assembly 1 includes: a heat conducting plate 16, thermal grease is applied between the heat conducting plate 16 and the lighting circuit board body 4, a plurality of groups of heat sinks 14 are evenly spaced on the top of the heat conducting plate 16, a plurality of groups of ventilation holes 15 are provided on the sides of the plurality of groups of heat sinks 14, the tops of the plurality of groups of heat sinks 14 are fixedly connected to the bottom of the mounting plate 13, a mounting hole 12 is provided on the top of the mounting plate 13, and a fan 11 is installed on the hole wall of the mounting hole 12.

[0026] Furthermore, after the heat from the lighting circuit board body 4 is transferred to the heat conducting plate 16, the heat sink 14 on top of the heat conducting plate 16 increases the heat dissipation area, thereby accelerating the heat dissipation rate. Simultaneously, the fan 11 blows air toward the heat conducting plate 16, and the air flows between the heat sinks 14, cooling the heat sink 14 and the heat conducting plate 16, further accelerating the heat dissipation rate. The ventilation holes 15 facilitate the air circulation between the heat sinks 14. Through this heat dissipation method, the heat dissipation rate of the lighting circuit board body 4 is effectively improved to meet the requirements of high-power use.

[0027] The positioning assembly 2 includes a slider 24, with a first through-hole 27 defined at the top and a second through-hole 28 defined on the side. The wall of the second through-hole 28 is slidably coupled to the exterior of the limiting slide 32, while the wall of the first through-hole 27 is slidably coupled to the side of the vertical rod 22. The side of the top of the vertical rod 22 is threadedly coupled to the inner ring of the nut 21, and the bottom end of the vertical rod 22 is fixedly connected to the top ends of the positioning plate 25. A compression spring 23 is provided between the nut 21 and the slider 24, with the inner ring of the compression spring 23 slidably coupled to the side of the vertical rod 22.

[0028] Furthermore, the lighting circuit board body 4 is placed between the heat conducting plate 16 and the positioning plate 25, and the heat conducting plate 16 and the positioning plate 25 form a clamp on the lighting circuit board body 4, and then the screw sleeve 21 is rotated to make the screw sleeve 21 move toward the slider 24, thereby causing the screw sleeve 21 to compress the compression spring 23. In this case, the compression spring 23 will rebound and push the screw sleeve 21 to move away from the slider 24. The screw sleeve 21 drives the positioning plate 25 through the vertical rod 22, so that the positioning plate 25 moves in the direction of the heat conducting plate 16, and then the positioning plate 25 pushes the lighting circuit board body 4 to move in the direction of the heat conducting plate 16, so that the top of the lighting circuit board body 4 fits more closely with the bottom of the heat conducting plate 16, which is more conducive to heat conduction; thermal grease is coated between the lighting circuit board body 4 and the heat conducting plate 16 to fill the tiny gap between the lighting circuit board body 4 and the heat conducting plate 16 and enhance the heat conduction effect.

[0029] The top of the positioning plate 25 is fixedly connected to the bottom of the flexible protection pad 26 , and the top of the flexible protection pad 26 is movably connected to the bottom of the lighting circuit board body 4 .

[0030] Furthermore, the flexible protective pad 26 is used to protect the lighting circuit board body 4 and prevent the positioning plate 25 from causing squeezing damage to the surface circuits of the lighting circuit board body 4 .

[0031] The guide rail 3 includes a limiting slide bar 32 , both ends of which are fixedly connected to the side of the connecting plate 31 , and one end of the connecting plate 31 is fixedly connected to the side of the heat conducting plate 16 .

[0032] Furthermore, the slider 24 slides outside the limiting slide bar 32, and the slider 24 drives the vertical rod 22 and the positioning plate 25 to move, and the positioning plate 25 is moved to avoid the components on the lighting circuit board body 4, preventing the positioning plate 25 from squeezing and damaging the components.

[0033] Working principle: During installation, the lighting circuit board body 4 is placed between the heat conducting plate 16 and the positioning plate 25. The heat conducting plate 16 and the positioning plate 25 clamp the lighting circuit board body 4. Then the screw sleeve 21 is rotated to make the screw sleeve 21 move toward the slider 24, thereby causing the screw sleeve 21 to compress the compression spring 23. In this case, the compression spring 23 will rebound and push the screw sleeve 21 to move away from the slider 24. The screw sleeve 21 drives the positioning plate 25 through the vertical rod 22, so that the positioning plate 25 moves in the direction of the heat conducting plate 16, thereby causing the positioning plate 25 to push the lighting circuit board body 4 to move in the direction of the heat conducting plate 16, so that the top of the lighting circuit board body 4 fits more closely with the bottom of the heat conducting plate 16, which is more conducive to heat conduction; thermal grease is coated between the lighting circuit board body 4 and the heat conducting plate 16 to fill the tiny gap between the lighting circuit board body 4 and the heat conducting plate 16 and enhance the heat conduction effect.

[0034] After the heat of the lighting circuit board body 4 is transferred to the heat conducting plate 16, the heat sink 14 on the top of the heat conducting plate 16 increases the heat dissipation area, thereby accelerating the heat dissipation speed. At the same time, the fan 11 blows air to the heat conducting plate 16, and the wind flows through the heat sinks 14 to cool the heat sink 14 and the heat conducting plate 16, further accelerating the heat dissipation speed, so that the heat dissipation speed of the lighting circuit board body 4 is effectively improved to meet the requirements of high-power use.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lighting circuit board with a heat dissipation structure, characterized in that: The invention comprises a lighting circuit board body (4), wherein a heat dissipation component (1) for accelerating heat dissipation of the lighting circuit board body (4) is provided on the top of the lighting circuit board body (4), positioning components (2) for fixedly connecting the lighting circuit board body (4) are provided on both sides of the heat dissipation component (1), and a guide rail (3) for limiting the moving direction of the positioning component (2) is provided inside the positioning component (2); The heat dissipation assembly (1) comprises: a heat conducting plate (16); thermal grease is applied between the heat conducting plate (16) and the lighting circuit board body (4); a plurality of groups of heat sinks (14) are equidistantly arranged on the top of the heat conducting plate (16); a plurality of groups of ventilation holes (15) are provided on the sides of the plurality of groups of heat sinks (14); the tops of the plurality of groups of heat sinks (14) are fixedly connected to the bottom of the mounting plate (13); a mounting hole (12) is provided on the top of the mounting plate (13); and a fan (11) is installed on the wall of the mounting hole (12).

2. The lighting circuit board with a heat dissipation structure according to claim 1, characterized in that: The guide rail (3) comprises a limiting slide bar (32), both ends of which are fixedly connected to the side of the connecting plate (31), and one end of the connecting plate (31) is fixedly connected to the side of the heat conducting plate (16).

3. The lighting circuit board with a heat dissipation structure according to claim 2, characterized in that: The positioning assembly (2) comprises a slider (24), a first through hole (27) is provided on the top of the slider (24), and a second through hole (28) is provided on the side of the slider (24).

4. The lighting circuit board with a heat dissipation structure according to claim 3, characterized in that: The hole wall of the second through hole (28) is slidably sleeved on the outside of the limiting sliding rod (32), and the hole wall of the first through hole (27) is slidably sleeved on the side of the vertical rod (22).

5. The lighting circuit board with a heat dissipation structure according to claim 4, characterized in that: The side portion of the top end of the vertical rod (22) is threadedly connected to the inner ring of the screw sleeve (21), and the bottom end of the vertical rod (22) is fixedly connected to the top of both ends of the positioning plate (25).

6. The lighting circuit board with a heat dissipation structure according to claim 5, characterized in that: A compression spring (23) is provided between the screw sleeve (21) and the slider (24), and the inner ring of the compression spring (23) is slidably sleeved on the side of the vertical rod (22).

7. The lighting circuit board with a heat dissipation structure according to claim 5, characterized in that: The top of the positioning plate (25) is fixedly connected to the bottom of the flexible protection pad (26), and the top of the flexible protection pad (26) is movably connected to the bottom of the lighting circuit board body (4).

Images