Liquid cooling head and lamp holder heat dissipation assembly

Abstract

The utility model relates to a liquid cooling head and a lamp holder heat dissipation assembly, and belongs to the field of photographic lamp heat dissipation equipment, and the liquid cooling head comprises a bottom plate, a flow guide plate and a cover plate; a containing groove with a top opening is formed in one side face of the bottom plate, and a liquid inlet and a liquid outlet which are communicated with the containing groove are formed in the bottom of the containing groove and used for inlet and outlet of cooling liquid. The flow guide plate is arranged in the accommodating groove of the bottom plate; a through hole is formed in the flow guide plate and is opposite to the liquid inlet; the cover plate is arranged on the bottom plate and seals the opening of the containing groove of the bottom plate so as to form a cooling chamber. The side, deviating from the bottom plate, of the cover plate is used for being attached to a lamp panel. Cooling liquid can enter the cooling chamber along the liquid inlet and the through hole, and flows out from the liquid outlet after being guided by the guide plate, so that heat generated by a lamp panel on the cover plate is taken away, and the heat dissipation efficiency of the liquid cooling head is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation equipment for photographic and video lights, and in particular to a liquid cooling head and a lamp head heat dissipation assembly. Background Art

[0002] With the continuous development of LED photographic lighting technology, especially the widespread application of high-power lamps, effectively managing the heat generated by these lamps has become a critical issue. Due to their high power density, photographic lamps generate a significant amount of heat during operation. If this heat cannot be dissipated effectively and promptly, it can lead to performance degradation or even damage. Therefore, a well-designed heat dissipation system is essential for improving the lifespan and stability of LED lamps.

[0003] Currently, common heat dissipation technologies for photographic lighting equipment mainly fall into two categories: air cooling and liquid cooling. Compared to traditional air cooling, liquid cooling technology can remove heat more quickly and evenly. Especially in the application of high-power LED light panels, liquid cooling systems have become a very important heat dissipation method due to their higher thermal conductivity.

[0004] However, in traditional liquid cooling head designs, the liquid inlet is typically located at the top or side of the cooling system, requiring various buffering and flow-limiting structures inside, which leads to a complex liquid flow path. This not only increases system complexity and causes uneven flow rates, affecting cooling efficiency, but also incurs unnecessary costs. Utility Model Content

[0005] The purpose of this invention is to provide a liquid cooling head and lamp holder heat dissipation assembly with a simple structure to improve the heat dissipation efficiency of the liquid cooling head.

[0006] To address the aforementioned technical problems, this application provides a liquid cooling head for heat dissipation of a lamp panel. The liquid cooling head includes: a base plate with a receiving groove having a top opening on one side; the bottom of the receiving groove has an inlet and an outlet communicating with the receiving groove for the entry and exit of coolant; a guide plate disposed within the receiving groove of the base plate; a through hole formed on the guide plate, the through hole being opposite to the inlet; and a cover plate disposed on the base plate, sealing the opening of the receiving groove of the base plate to form a cooling chamber; the side of the cover plate facing away from the base plate is used to fit against the lamp panel; the coolant can enter the cooling chamber along the inlet and the through hole, and after being guided by the guide plate, flows out from the outlet to carry away the heat generated by the lamp panel on the cover plate.

[0007] In some embodiments of this application, the guide plate is provided with a guide groove; the guide groove is connected to the through hole, and the guide groove extends along a first direction, which is the extension direction of the straight line where the liquid outlet and the liquid inlet are located, so that the coolant flows through the through hole along the extension direction of the guide groove.

[0008] In some embodiments of this application, the cover plate is provided with a plurality of fins on the side facing the receiving groove, the fins facing the guide plate and extending into the cooling chamber; the fins extend along a second direction perpendicular to the guide groove, the plurality of fins are spaced apart in the first direction, and a heat dissipation channel for the coolant to pass through is formed between two adjacent fins so as to carry away the heat on the fins.

[0009] In some embodiments of this application, the sidewall of the guide plate and the inner sidewall of the receiving groove of the bottom plate are spaced apart from each other and enclose to form a return channel; the coolant flows out from the outlet through the return channel after passing through the heat dissipation channel between adjacent fins.

[0010] In some embodiments of this application, the guide plate has a plurality of crossbeams on one side facing the cover plate, the crossbeams extend along the second direction, the plurality of crossbeams are spaced apart along the first direction, and a heat dissipation area is formed between two adjacent crossbeams; the fins are divided into a plurality of fin groups corresponding to the heat dissipation area, a receiving groove is formed between two adjacent fin groups, the cover plate is pressed on the guide plate, and the crossbeams are embedded in the receiving groove.

[0011] In some embodiments of this application, the liquid cooling head further includes a buffer layer, which is disposed between the guide plate and the cover plate; the upper and lower sides of the buffer layer respectively abut against the fins on the cover plate and the guide plate.

[0012] In some embodiments of this application, the buffer layer is provided with a plurality of corrugated grooves extending along the first direction, and the plurality of corrugated grooves are arranged at intervals along the second direction.

[0013] In some embodiments of this application, the liquid cooling head includes an inlet nozzle, an outlet nozzle, and a sheet metal bracket; the sheet metal bracket is detachably connected to the side of the base plate opposite to the cover plate; the sheet metal bracket is provided with through holes corresponding to the liquid inlet and the liquid outlet; the inlet nozzle is vertically connected to the liquid inlet on the base plate through the through hole on the sheet metal bracket; the outlet nozzle is L-shaped, one end of the outlet nozzle is connected to the liquid outlet on the base plate through the through hole on the sheet metal bracket, and the other end of the outlet nozzle is bent and extends out of the side of the sheet metal bracket.

[0014] In some embodiments of this application, a temperature sensing groove is provided on the side of the cover plate away from the base plate, and the temperature sensing groove is used to place a temperature sensing probe; the base plate, guide plate, cover plate, inlet nozzle, outlet nozzle and sheet metal bracket are all made of copper or aluminum.

[0015] This application also provides a lamp head heat dissipation assembly, including: a lamp plate, which includes a plate body and a light source disposed on the plate body; and a liquid cooling head as described above, wherein the lamp plate is connected to the liquid cooling head, and the plate body of the lamp plate is attached to the cover plate of the liquid cooling head, so that the liquid cooling head can carry away the heat generated by the light source.

[0016] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows:

[0017] This application provides a liquid cooling head and lamp holder heat dissipation assembly. The liquid cooling head has a receiving groove on its base plate, and a cover plate is installed on the base plate to enclose the receiving groove, forming a cooling chamber. A guide plate is installed inside the cooling chamber. The bottom of the receiving groove on the base plate has an inlet and an outlet. Liquid enters from the inlet from bottom to top and is then guided to the outlet by the guide plate inside the cooling chamber. This eliminates the need for a complex buffer and flow-limiting structure, simplifying the device structure. Furthermore, the inlet and outlet are located on the lower side of the base plate, with the inlet direction perpendicular to the directions of the guide plate and cover plate. The cover plate can block water from entering the inlet, allowing the inlet and outlet to be enlarged and widened, increasing the coolant flow rate and further improving heat dissipation efficiency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the lamp holder heat dissipation assembly.

[0019] Figure 2 for Figure 1 Exploded view of the heat dissipation assembly of the lamp head.

[0020] Figure 3 for Figure 1 An exploded view of the heat dissipation assembly for the central lamp head from another angle.

[0021] Figure 4 for Figure 3 A schematic diagram of the structure of the lamp plate in the heat dissipation assembly of the lamp head.

[0022] Figure 5 for Figure 3 An exploded view of the liquid cooling head in the central lamp head heat dissipation assembly.

[0023] Figure 6 for Figure 3 Another exploded view of the liquid cooling head in the lamp holder heat dissipation assembly.

[0024] Figure 7 for Figure 5A partial exploded structural diagram of the liquid cooling head.

[0025] Figure 8 for Figure 5 A three-dimensional structural diagram of the cover plate of the liquid cooling head after disassembly.

[0026] Figure 9 for Figure 5 A three-dimensional structural diagram showing the fins on the cover plate of the liquid cooling head being installed onto the guide plate.

[0027] The following are the descriptions of the reference numerals:

[0028] 100. Lamp head heat dissipation assembly; 10. Lamp board; 11. Board body; 12. Light source; 13. Data cable; 14. Conductive terminal mounting slot; 20. Liquid cooling head; 21. Base plate; 211. Liquid inlet; 212. Liquid outlet; 213. Receiving tank; 22. Guide plate; 221. Through hole; 222. Guide groove; 223. Crossbeam; 224. Return channel; 23. Cover plate; 231. Fin; 232. Receiving tank; 233. Temperature sensing tank; 24. Buffer layer; 25. Water inlet; 26. Water outlet; 27. Sheet metal bracket; 271. Through hole. Detailed Implementation

[0029] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention is capable of various variations in different embodiments without departing from the scope of the present invention, and that the descriptions and illustrations herein are intended to be illustrative in nature and not to limit the present invention.

[0030] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back, etc.) are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0032] Please see Figures 1 to 3This embodiment provides a lamp holder heat dissipation assembly 100, which includes a lamp plate 10 and a liquid cooling head 20 disposed on the lamp plate 10. The lamp plate 10 is used to emit light, and the liquid cooling head 20 is connected to the lamp plate 10 and can quickly remove the heat generated by the lamp plate 10 to cool the lamp plate 10.

[0033] Please see Figure 4 In some embodiments, the lamp panel 10 includes a panel 11 and a light source 12 disposed on the panel 11.

[0034] The plate 11 can be a metal substrate with good thermal conductivity. Integrated circuits can be mounted on the plate 11, and the light source 12 is fixed on the plate 11. The light source 12 can be an LED surface light source 12, which can be circular. The light source 12 is fixed on the top surface of the plate 11 and connected to the circuit on the lamp board 10, so as to control the LED surface light source 12 to emit various types of light to adapt to different usage environments.

[0035] In some embodiments, threaded holes are provided at the four apex corners of the plate 11 of the lamp plate 10. Correspondingly, the liquid cooling head 20 is also provided with threaded holes opposite to the lamp plate 10. Bolts can pass through the threaded holes on the lamp plate 10 and the liquid cooling head 20, so that the lamp plate 10 and the liquid cooling head 20 can be fixedly attached to each other, thereby enabling the liquid cooling head 20 to carry away the heat from the lamp plate 10.

[0036] Please see Figure 4 In some embodiments, data cables 13 are also provided on both sides of the board 11 of the lamp panel 10. One end of the data cable 13 is connected to the integrated circuit on the board 11, and the other end can be connected to an external power supply or control device. This allows external devices to supply power to the lamp panel 10 and the light source 12; or to control the light emitted by the light source 12 so that the light source 12 can emit different lights.

[0037] Please see Figure 3 and Figure 4 In some embodiments, the side of the lamp board 10 is provided with a conductive terminal mounting groove 14. The conductive terminal mounting groove 14 is used to install abutment conductive terminals, so that after the light effect accessories such as motorized Fresnel lenses, motorized filter disks or motorized zoom reflectors are installed on the lamp board 10, they can be quickly electrically connected to the lamp board 10 to supply power to the light effect accessories.

[0038] Please see Figures 5 to 7 In some embodiments, the liquid cooling head 20 includes a base plate 21, a guide plate 22 disposed within the base plate 21, and a cover plate 23 that closes the base plate 21.

[0039] Please see Figure 6The base plate 21 has a receiving groove 213 with an open top on one side. The bottom of the receiving groove 213 of the base plate 21 has an inlet 211 and an outlet 212 connected to the receiving groove 213 for the entry and exit of coolant. A guide plate 22 is disposed within the receiving groove 213 of the base plate 21; the guide plate 22 has a through hole 221, which is positioned opposite to the inlet 211.

[0040] A cover plate 23 is mounted on a base plate 21 and seals the opening of the receiving groove 213 of the base plate 21 to form a cooling chamber. The side of the cover plate 23 facing away from the base plate 21 is used to fit against the lamp panel 10. This allows coolant to enter the cooling chamber through the inlet 211 and the through hole 221, and after being guided by the guide plate 22, it flows out from the outlet 212 to carry away the heat generated by the lamp panel 10 that is attached above the cover plate 23.

[0041] Specifically, the liquid inlet 211 on the base plate 21 is located in the middle of the receiving tank 213, and the liquid outlet 212 is located on one side of the liquid inlet 211. The connection line between the liquid outlet 212 and the liquid inlet 211 is located on the axis of symmetry of the base plate 21. Both the liquid inlet 211 and the liquid outlet 212 are arranged vertically and communicate with the receiving tank 213 in the base plate 21, so that the coolant can enter and flow out quickly.

[0042] A guide plate 22 is installed in the receiving groove 213 of the base plate 21 to guide the coolant entering through the inlet 211, allowing the coolant to flow evenly to all parts of the cooling chamber. A cover plate 23 is installed on the base plate 21 and closes the receiving groove 213 of the base plate 21 to form a cooling chamber, making the entire device completely sealed to prevent coolant leakage, thereby ensuring the stability and long-term reliable operation of the liquid cooling head 20.

[0043] By placing the inlet 211 at the bottom of the base plate 21, the coolant enters through the inlet 211, faces the cover plate 23, and is blocked by the cover plate 23. Then, the coolant is guided by the guide plate 22, eliminating the need for a complex buffer and flow-limiting structure inside the cooling chamber to restrict water flow, thus simplifying the device's structure. Furthermore, this structure allows for the enlargement of the inlet 211 and outlet 212, enabling faster coolant flow and improving heat dissipation efficiency.

[0044] Please see Figure 6 and Figure 7 In some embodiments, the guide plate 22 is provided with a guide groove 222. The guide groove 222 communicates with the through hole 221 and extends along a first direction. The first direction is the extension direction of the straight line between the liquid outlet 212 and the liquid inlet 211, so that the coolant flows through the through hole 221 along the extension direction of the guide groove 222.

[0045] The guide channel 222 is a through channel that passes through the guide plate 22 and extends along the straight line between the liquid outlet 212 and the liquid inlet 211, so that the guide channel 222 is located on both sides of the through hole 221 of the guide plate 22. When the coolant enters the through hole 221 through the liquid inlet 211, it will be quickly guided into the guide channel 222 and flow along the extension direction of the guide channel 222, thereby ensuring that the coolant can be evenly distributed in the cooling chamber.

[0046] It is conceivable that in some other embodiments, the guide plate 22 may also be provided with multiple guide grooves 222 connected to the through hole 221 or other guide structures to guide the coolant to the cooling chamber.

[0047] Please see Figure 7 and Figure 9 In some embodiments, the cover plate 23 has a plurality of fins 231 on the side facing the receiving groove 213. The fins 231 face the guide plate 22 and extend into the cooling chamber. The fins 231 extend in a second direction perpendicular to the guide groove 222, and the plurality of fins 231 are spaced apart in a first direction; a heat dissipation channel for coolant to pass through is formed between two adjacent fins 231 to carry away the heat on the fins 231.

[0048] Multiple heat dissipation fins 231 are provided on the lower side of the cover plate 23, which can effectively increase the contact area between the coolant and the cover plate 23 to optimize heat exchange efficiency. This allows the heat conducted from the lamp plate 10 to the cover plate 23 to be quickly carried away by the fins 231 in contact with the coolant. Furthermore, the heat dissipation channels formed between adjacent fins 231 can effectively guide the flow of coolant, enabling the coolant to better carry away heat during the flow process.

[0049] Please see Figure 6 and Figure 8 In some examples, the guide plate 22 has multiple crossbeams 223 on the side facing the cover plate 23. The crossbeams 223 extend along a second direction perpendicular to the first direction, and the multiple crossbeams 223 are spaced apart along the first direction. A heat dissipation area is formed between two adjacent crossbeams 223; the fins 231 are divided into multiple fin groups corresponding to the heat dissipation area, and a receiving groove 232 is formed between two adjacent fin groups. The cover plate 23 is pressed onto the guide plate 22, and the crossbeams 223 are embedded in the receiving groove 232.

[0050] Specifically, in this embodiment, the crossbeam 223 divides the upper surface of the guide plate 22 into three heat dissipation zones. Correspondingly, the bottom surface of the cover plate 23 is also provided with three fin groups, each fin group corresponding to one heat dissipation zone. Each fin group consists of multiple fins 231. When the cover plate 23 is fixed to the bottom plate 21, the crossbeam 223 is embedded in the adjacent receiving groove 232 and abuts against the lower side of the cover plate 23. In some embodiments, the crossbeam 223 can be welded to the lower side of the cover plate 23 to support the cover plate 23, so that the cover plate 23 will not deform even when the area is large, thereby enhancing the stability of the entire device.

[0051] Please see Figure 8 and Figure 9 In some embodiments, the sidewall of the guide plate 22 and the inner sidewall of the receiving groove 213 of the base plate 21 are spaced apart and enclose each other to form a return channel 224. After passing through the heat dissipation channel between adjacent fins 231, the coolant flows out from the outlet 212 through the return channel 224.

[0052] Specifically, in this embodiment, the area of ​​the guide plate 22 is smaller than the area of ​​the receiving groove 213 of the base plate 21. This results in a gap between the peripheral sidewall of the guide plate 22 and the inner wall of the receiving groove 213 when the guide plate 22 is fixed inside the receiving groove 213. This gap forms a coolant return channel 224, which surrounds the guide plate 22. The outlet 212 is located within the return channel 224, meaning that the outlet 212 is not obstructed when the guide plate 22 is fixed inside the receiving groove 213.

[0053] After the coolant enters the cooling chamber through the inlet 211, it flows through the through-holes 221 on the guide plate 22 and into the guide channel 222. Subsequently, the coolant flows along the extension direction of the guide channel 222 and through the heat dissipation channels between the fins 231. As the coolant flows through the heat dissipation channels, it exchanges heat with the fins 231, absorbing heat from them. The coolant continues to flow and finally enters the outlet 212 through the return channel 224 to be discharged from the liquid cooling head 20.

[0054] Please see Figure 7 In some embodiments, the liquid cooling head 20 further includes a buffer layer 24. The buffer layer 24 is disposed between the guide plate 22 and the cover plate 23. The upper and lower sides of the buffer layer 24 abut against the fins 231 on the cover plate 23 and the guide plate 22, respectively.

[0055] Specifically, the crossbeam 223 divides the top surface of the guide plate 22 into three heat dissipation zones, and each heat dissipation zone is separated by the guide groove 222. Therefore, in this embodiment, six buffer layers 24 are provided and arranged on both sides of the guide groove 222. When the cover plate 23 is connected to the bottom plate 21, the buffer layers 24 provided on the guide plate 22 can abut against the ends of the fins 231 on the cover plate 23 to prevent interference between the cover plate 23 and the guide plate 22.

[0056] Please see Figure 7 In some embodiments, the buffer layer 24 is provided with a plurality of corrugated grooves extending along a first direction, and the plurality of corrugated grooves are arranged at intervals along a second direction.

[0057] Specifically, each buffer layer 24 has multiple corrugated grooves perpendicular to the extension direction of the fins 231. When the cover plate 23 is connected to the base plate 21, the buffer layer 24 abuts against the ends of the fins 231. When the coolant passes through the heat dissipation channel between adjacent fins 231, the uneven corrugated grooves on the buffer layer 24 allow the coolant to completely fill the heat dissipation channel, thereby allowing the fins 231 to be completely immersed in the coolant, further improving the heat dissipation efficiency of the liquid cooling head 20.

[0058] Please see Figure 7 In some embodiments, the liquid cooling head 20 includes an inlet nozzle 25 and an outlet nozzle 26. The inlet nozzle 25 can be a vertical connector, vertically connected to the liquid inlet 211 of the base plate 21, allowing for quick connection to external cooling circulation equipment piping. The outlet nozzle 26 can be an L-shaped connector, with one end connected to the liquid outlet 212 of the base plate 21, and the other end bent away from the inlet nozzle 25. This not only allows for quick connection to external cooling circulation equipment piping but also makes it easier to connect the inlet nozzle 25 and outlet nozzle 26 to external piping within a limited space.

[0059] Please see Figure 6 and Figure 7 In some embodiments, the liquid cooling head 20 further includes a sheet metal bracket 27. The sheet metal bracket 27 is detachably connected to the side of the base plate 21 opposite to the cover plate 23. The sheet metal bracket 27 can be connected to an external support frame, allowing the liquid cooling head 20 to be quickly fixed to the external support frame.

[0060] In some embodiments, the sheet metal bracket 27 is convex and has through holes 271 corresponding to the liquid inlet 211 and the liquid outlet 212. The water inlet 25 connects to the liquid inlet 211 on the base plate 21 through the through holes 271; the water outlet 26 connects to the liquid outlet 212 on the base plate 21 through another through hole 271 and extends from the side of the sheet metal bracket 27, allowing external pipes to be easily connected to the water inlet 25 and the water outlet 26.

[0061] In some embodiments, components such as the base plate 21, the guide plate 22, the cover plate 23, the inlet 25, the outlet 26, and the sheet metal bracket 27 are all made of copper or aluminum.

[0062] By using copper or aluminum to manufacture the various components of the liquid cooling head 20, the overall heat dissipation efficiency of the liquid cooling head 20 is ensured. Copper has extremely high thermal conductivity, which can quickly conduct heat, allowing the coolant to efficiently remove the heat generated by the heat source. Aluminum, while ensuring a certain heat dissipation capacity, provides a lighter weight, making it suitable for applications where reducing the overall weight of the equipment is required.

[0063] Please see Figure 3 and Figure 4 In some embodiments, a temperature sensing groove 233 is provided on the side of the cover plate 23 away from the base plate 21. The temperature sensing groove 233 is used to place a temperature sensing probe, thereby realizing real-time monitoring and adjustment of the operating temperature of the liquid cooling head 20, and ensuring that the lamp head heat dissipation assembly 100 always maintains the best heat dissipation effect when operating at high power, avoiding equipment damage caused by overheating.

[0064] In summary, this application provides a liquid cooling head 20 and a lamp holder heat dissipation assembly 100. The liquid cooling head 20 has a receiving groove 213 on its base plate 21, and a cover plate 23 is disposed on the base plate 21 to enclose the receiving groove 213, forming a cooling chamber. A guide plate 22 is disposed within the cooling chamber. The bottom of the receiving groove 213 of the base plate 21 has an inlet 211 and an outlet 212. Liquid enters from the inlet 211 from bottom to top and is then guided to the outlet 212 by the guide plate 22 within the cooling chamber. This eliminates the need for a complex buffer and flow-limiting structure, simplifying the device structure. Furthermore, the inlet 211 and outlet 212 are located on the lower side of the base plate 21, with the inlet direction perpendicular to the directions of the guide plate 22 and the cover plate 23. The cover plate 23 can block the water from the inlet 211, allowing the inlet 211 and outlet 212 to be enlarged and widened, increasing the coolant flow rate and further improving heat dissipation efficiency.

[0065] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A liquid cooling head for heat dissipation of a lamp panel, characterized in that, The liquid cooling head includes: The base plate has a receiving groove with a top opening on one side. The bottom of the receiving groove has an inlet and an outlet that are connected to the receiving groove for the entry and exit of coolant. A flow guide plate is installed in the receiving groove of the bottom plate; the flow guide plate has a through hole, which is arranged opposite to the liquid inlet. A cover plate is disposed on the base plate and seals the receiving groove opening of the base plate to form a cooling chamber; the side of the cover plate away from the base plate is used to fit against the lamp plate; the coolant can enter the cooling chamber along the inlet and the through hole, and flow out from the outlet after being guided by the guide plate, so as to carry away the heat generated by the lamp plate on the cover plate.

2. The liquid cooling head according to claim 1, characterized in that, The guide plate is provided with a guide groove; the guide groove is connected to the through hole, and the guide groove extends along a first direction, which is the extension direction of the straight line where the liquid outlet and the liquid inlet are located, so that the coolant flows through the through hole along the extension direction of the guide groove.

3. The liquid cooling head according to claim 2, characterized in that, The cover plate has multiple fins on its side facing the receiving groove, and the fins face the guide plate and extend into the cooling chamber; The fins extend along a second direction perpendicular to the guide groove, and a plurality of the fins are spaced apart in the first direction. A heat dissipation channel for the coolant to pass through is formed between two adjacent fins to carry away the heat on the fins.

4. The liquid cooling head according to claim 3, characterized in that, The sidewall of the guide plate and the inner sidewall of the receiving groove of the bottom plate are spaced apart from each other and enclose each other to form a return channel; after the coolant passes through the heat dissipation channel between adjacent fins, it flows out from the outlet through the return channel.

5. The liquid cooling head according to claim 3, characterized in that, The guide plate has multiple crossbeams on one side facing the cover plate. The crossbeams extend along the second direction and are spaced apart along the first direction. A heat dissipation area is formed between two adjacent crossbeams. The fins are divided into multiple fin groups corresponding to the heat dissipation area. A receiving groove is formed between two adjacent fin groups. The cover plate is pressed against the guide plate, and the crossbeams are embedded in the receiving groove.

6. The liquid cooling head according to claim 3, characterized in that, The liquid cooling head also includes a buffer layer, which is disposed between the guide plate and the cover plate; the upper and lower sides of the buffer layer respectively abut against the fins on the cover plate and the guide plate.

7. The liquid cooling head according to claim 6, characterized in that, The buffer layer is provided with a plurality of corrugated grooves extending along the first direction, and the plurality of corrugated grooves are arranged at intervals along the second direction.

8. The liquid cooling head according to claim 1, characterized in that, The liquid cooling head includes an inlet nozzle, an outlet nozzle, and a sheet metal bracket; the sheet metal bracket is detachably connected to the side of the base plate opposite to the cover plate; The sheet metal bracket is provided with through holes corresponding to the liquid inlet and liquid outlet; the water inlet is vertically connected to the liquid inlet on the base plate after passing through the through hole on the sheet metal bracket; the water outlet is L-shaped, one end of the water outlet is connected to the liquid outlet on the base plate after passing through the through hole on the sheet metal bracket, and the other end of the water outlet is bent and extends out of the side of the sheet metal bracket.

9. The liquid cooling head according to claim 8, characterized in that, A temperature sensing groove is provided on the side of the cover plate away from the bottom plate, and the temperature sensing groove is used to place a temperature sensing probe. The base plate, guide plate, cover plate, inlet nozzle, outlet nozzle, and sheet metal bracket are all made of copper or aluminum.

10. A lamp holder heat dissipation assembly, characterized in that, include: A light panel, comprising a panel body and a light source disposed on the panel body; According to any one of claims 1-9, the lamp plate is connected to the liquid cooling head, and the plate body of the lamp plate is attached to the cover plate of the liquid cooling head, so that the liquid cooling head can carry away the heat generated by the light source.

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