A stage lamp inner circulation heat dissipation system

Abstract

The application discloses a stage lamp inner circulation heat dissipation system, which comprises a supporting arm, a lamp head and a circulation heat dissipation system, the lamp head is pivotally connected with the supporting arm through a pivot shaft, the pivot shaft is a shaft pipe structure, the inner space of the lamp head is communicated with the inner space of the supporting arm through the pivot shaft, the circulation heat dissipation system comprises a cooling medium, a heat dissipation assembly located in the supporting arm and a power assembly for promoting the circulation flow of the cooling medium between the lamp head and the heat dissipation assembly through the shaft pipe structure, and the cooling medium is isolated from the outer space of the stage lamp. The power assembly drives the cooling medium to circulate and flow between the lamp head and the supporting arm through the pivot shaft of the shaft pipe structure, heat in the lamp head is taken out, and the heat is dissipated through the heat dissipation assembly in the supporting arm. While the sealing property of the lamp head is ensured, the heat dissipation space is increased, the heat dissipation efficiency is improved, and the volume of the lamp head is effectively reduced due to the fact that the heat dissipation assembly is arranged in the supporting arm, compared with the fact that the heat dissipation assembly is arranged in the lamp head.

Description

Technical Field

[0001] This invention relates to the field of stage lighting technology, and more specifically, to an internal circulation heat dissipation system for stage lights. Background Technology

[0002] Modern stage lights are becoming increasingly feature-rich and structurally sophisticated, necessitating measures to prevent dust or liquids from entering the lamp body and damaging internal components. However, due to the generally high wattage of stage lights, rapid ventilation and heat dissipation are essential, especially in the lamp head, which generates the most heat and requires the most waterproofing and dustproofing. Most current stage lights utilize air convection between the inside and outside of the lamp head for rapid heat dissipation. For stage lights with high waterproofing requirements, the heat inside the lamp head is typically transferred to the lamp head housing, relying on heat exchange between the housing and the external environment for cooling—a less efficient method. Summary of the Invention

[0003] To overcome at least one of the defects described in the prior art, the present invention provides an internal circulation heat dissipation system for stage lights, which guides the heat inside the lamp head of the stage light to the support arm for heat dissipation. While ensuring the sealing of the lamp head, it increases the heat dissipation space and improves the heat dissipation efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a stage lamp internal circulation heat dissipation system, including a support arm, a lamp head, and a circulation heat dissipation system. The lamp head is pivotally connected to the support arm via a pivot shaft, the pivot shaft being a shaft tube structure. The internal space of the lamp head is connected to the internal space of the support arm via the pivot shaft. The circulation heat dissipation system includes a cooling medium, a heat dissipation component located within the support arm, and a power component that promotes the circulation of the cooling medium between the lamp head and the heat dissipation component through the shaft tube structure. The cooling medium is isolated from the external space of the stage lamp.

[0005] The stage lamp's internal circulation cooling system, driven by the power component, circulates the cooling medium between the lamp head and the support arm via the pivot shaft of the shaft tube structure. This carries away heat from the lamp head and dissipates it through the cooling component in the support arm. While ensuring the lamp head's airtightness, this system increases the heat dissipation space and improves cooling efficiency. Furthermore, since the cooling component is located inside the support arm, compared to placing it inside the lamp head previously, it effectively reduces the size of the lamp head, which is beneficial for the miniaturization of the stage lamp.

[0006] Furthermore, the lamp head is pivotally connected to the support arm via two pivot shafts, both of which are tube structures. The cooling medium flows in from one tube structure and flows out from the other, forming a circulation loop. This results in a longer heat dissipation channel and more thorough cooling of the cooling medium.

[0007] Furthermore, the cooling medium enters and exits the lamp head through the same pivot shaft. This method can be used when the lamp head is pivotally connected to the support arm through only one pivot shaft; or the lamp head is pivotally connected to the support arm through two pivot shafts, and the cooling medium enters and exits the lamp head through the same pivot shaft, with one pivot shaft reserved for passing through signal lines or electrical wires.

[0008] Furthermore, a connecting pipe is provided inside the pivot shaft, the connecting pipe including an inner pipe and an outer pipe, the cooling medium flows between the lamp head and the support arm through the inner pipe and the interlayer between the inner pipe and the outer pipe, and a rotary seal is provided on the inner pipe and / or the outer pipe. This ensures that the cooling medium enters and exits the lamp head through the same pivot shaft.

[0009] Furthermore, the lamp head is pivotally connected to the support arm via two pivot shafts, both of which are tube-shaped structures. The cooling medium is divided into two streams, each of which circulates between the lamp head and one of the heat dissipation components via only one pivot shaft. Utilizing two streams of cooling medium for heat dissipation results in higher efficiency.

[0010] Optionally, the two cooling media are mixed inside the lamp head and then flow out through one of the pivot shafts respectively.

[0011] Furthermore, the heat dissipation assembly includes heat dissipation fins, a flow guide pipe passing through the heat dissipation fins for guiding the cooling medium, and a cooling fan for dissipating heat from the heat dissipation fins. The support arm is provided with a vent corresponding to the cooling fan. The cooling medium flows through the flow guide pipe and is absorbed by the heat dissipation fins. Then, the cooling fan dissipates heat from the flow guide pipe and the heat dissipation fins, and the heat is discharged outside the stage light through the vent, achieving rapid heat dissipation of the stage light.

[0012] Furthermore, the cooling medium is gas. When the gas flows between the lamp head and the support arm, the sealing requirement is low, and even if there is an accidental leak, it will not cause any damage to the components inside the stage lamp.

[0013] Furthermore, the system also includes a light source and a heat insulation cavity enclosing the light source. The heat insulation cavity is connected to the heat transfer medium inlet of the heat dissipation assembly. The power assembly also includes at least one blower mechanism that blows cooling medium from the cold medium outlet of the heat dissipation assembly into the heat insulation cavity. The heat insulation cavity directs all heat to the heat dissipation assembly, preventing the heat from the light source from dissipating into the lamp holder and damaging other components inside the lamp holder.

[0014] Furthermore, it also includes a flow-diverting cavity, which has a first sealed chamber and a second sealed chamber. The power assembly includes at least one exhaust mechanism. The cold medium outlet of the heat dissipation assembly is connected to the first sealed chamber. The first sealed chamber also has an exhaust port, which is equipped with the exhaust mechanism. The heat insulation cavity is connected to the hot air inlet of the heat dissipation assembly through the second sealed chamber. The flow-diverting cavity separates the low-temperature cooling medium from the high-temperature cooling medium. The low-temperature cooling medium is extracted from the exhaust port by the exhaust mechanism and fills the entire interior of the lamp head, which can dissipate heat to other components inside the lamp head. Then, it is blown into the heat insulation cavity by the blower mechanism to dissipate heat to the light source, thus achieving heat dissipation for the entire lamp head.

[0015] Furthermore, the lamp head has side plates pivotally connected to the support arm on both sides. The cold air duct connecting the cold medium outlet to the first sealed chamber is at least partially formed by a cover plate fastened to the side plate, and / or the hot air duct connecting the hot medium inlet to the second sealed chamber is at least partially formed by a cover plate fastened to the side plate. The cold air duct and / or the hot air duct are formed directly by fastening the cover plate to the side plate. The cover plate, being a sheet metal component, is easy to manufacture and fully utilizes the side plate of the support arm, eliminating the need for additional air duct installation and avoiding the aging problem of the air duct. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the stage lamp internal circulation heat dissipation system according to Embodiment 1 of the present invention;

[0017] Figure 2 This is an exploded structural diagram of the stage lamp internal circulation heat dissipation system according to Embodiment 1 of the present invention;

[0018] Figure 3 This is a cross-sectional view of the stage lamp internal circulation heat dissipation system according to Embodiment 1 of the present invention;

[0019] Figure 4 This is a front structural schematic diagram of the stage lamp internal circulation heat dissipation system according to Embodiment 2 of the present invention;

[0020] Figure 5This is an exploded structural diagram of the stage lamp internal circulation heat dissipation system according to Embodiment 2 of the present invention.

[0021] In the picture:

[0022] 100. Lamp holder; 110. Light source; 120. Heat insulation cavity; 121. Cylinder body; 122. Heat insulation sheet; 130. Diverting cavity; 131. First sealed chamber; 1311. Exhaust vent; 132. Second sealed chamber; 140. Side plate; 150. Cover plate; 200. Support arm; 211. Heat dissipation fins; 212. Guide pipe; 213. Cooling fan; 220. Ventilation opening; 300. Pivot shaft; 310. Connecting pipe; 311. Inner pipe; 312. Outer pipe; 313. Support component; 320. Rotary seal; 410. Blowering mechanism; 420. Exhaust mechanism. Detailed Implementation

[0023] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0024] like Figures 1 to 3 According to Embodiment 1 of the present invention, a stage lamp internal circulation heat dissipation system is provided, including a support arm 200, a lamp head 100, and a circulation heat dissipation system. The lamp head 100 is pivotally connected to the support arm 200 via a pivot shaft 300, which is a shaft tube structure. The internal space of the lamp head 100 is connected to the internal space of the support arm 200 via the pivot shaft 300. The circulation heat dissipation system includes a cooling medium, a heat dissipation component located within the support arm 200, and a power component that promotes the circulation of the cooling medium between the lamp head 100 and the heat dissipation component through the shaft tube structure. The cooling medium is isolated from the external space of the stage lamp.

[0025] The stage lamp's internal circulation cooling system, driven by the power component, circulates the cooling medium between the lamp head 100 and the support arm 200 via the pivot shaft 300 of the shaft tube structure. This carries away heat from the lamp head 100 and dissipates it through the cooling component in the support arm 200. While ensuring the lamp head 100's airtightness, this system increases the heat dissipation space and improves cooling efficiency. Furthermore, since the cooling component is located inside the support arm 200, compared to placing it inside the lamp head 100 previously, it effectively reduces the size of the lamp head 100, which is beneficial for the miniaturization of the stage lamp.

[0026] Generally, when the cooling medium is a gas, it can flow directly through the pivot shaft 300. When the cooling medium is a liquid, a pipe can be provided, and the cooling medium flows through the pivot shaft 300 via the pipe.

[0027] In Embodiment 1 of the present invention, the cooling medium is gas, and a rotary seal 320 is provided at the pivot point between the lamp holder 100 and the support arm 200. The rotary seal 320 can be a skeleton oil seal.

[0028] In a preferred embodiment of the present invention, the lamp holder 100 is pivotally connected to the support arm 200 via two pivot shafts 300, both of which are shaft-tube structures. The cooling medium flows in from one of the shaft-tube structures and flows out from the other, forming a circulation loop with a longer heat dissipation channel and more thorough cooling of the cooling medium.

[0029] like Figures 4 to 5 In Embodiment 2 of the present invention, the cooling medium enters and exits the lamp head 100 through the same pivot shaft 300. This method can be used when the lamp head 100 is pivotally connected to the support arm 200 through only one pivot shaft 300; or the lamp head 100 is pivotally connected to the support arm 200 through two pivot shafts 300, and the cooling medium enters and exits the lamp head 100 through the same pivot shaft 300, allowing one pivot shaft 300 to be reserved for passing signal lines or electrical wires, as in Embodiment 2 of the present invention.

[0030] In a preferred embodiment of the present invention, a connecting pipe 310 is provided inside the pivot shaft 300. The connecting pipe 310 includes an inner pipe 311 and an outer pipe 312. The cooling medium flows between the lamp head 100 and the support arm 200 through the inner pipe 311 and the interlayer between the inner pipe 311 and the outer pipe 312. A rotary seal 320 is provided on the inner pipe 311 and / or the outer pipe 312. One end of the guide pipe 212 of the heat dissipation assembly is connected to the inner pipe 311, and the other end of the guide pipe 212 is connected to the interlayer between the inner pipe 311 and the outer pipe 312, thereby realizing that the cooling medium enters and exits the lamp head 100 through the same pivot shaft 300.

[0031] In the second embodiment of the present invention, the cooling medium is a gas, and the portion of the outer tube 312 located inside the lamp holder 100 is open, allowing the cooling medium to directly fill the entire interior of the lamp holder 100. A rotary seal 320 is provided on the inner tube 311 to ensure that the cooling medium within the inner tube 311 does not leak during the rotation of the lamp holder 100. The rotary seal 320 can be a high-pressure rotary joint.

[0032] Optionally, the inner tube 311 and the outer tube 312 are supported by a support member 313.

[0033] In other embodiments, the end of the outer tube 312 may be sealed to the outer wall of the inner tube 311, and a conduit may be used to guide the cooling medium in the interlayer between the inner tube 311 and the outer tube 312 to a designated location.

[0034] In a preferred embodiment of the present invention, the lamp head 100 is pivotally connected to the support arm 200 via two pivot shafts 300, both of which are tube-shaped structures. The cooling medium is divided into two streams, each of which circulates between the lamp head 100 and one of the heat dissipation components via only one pivot shaft 300. Utilizing two streams of cooling medium for heat dissipation results in higher heat dissipation efficiency.

[0035] like Figures 1 to 3 In a preferred embodiment of the present invention, the heat dissipation assembly includes heat dissipation fins 211, a flow guide pipe 212 passing through the heat dissipation fins 211 for guiding the cooling medium, and a cooling fan 213 for dissipating heat from the heat dissipation fins 211. The support arm 200 is provided with a vent 220 corresponding to the cooling fan 213. The cooling medium flows through the flow guide pipe 212 and is absorbed by the heat dissipation fins 211. Then, the cooling fan 213 dissipates heat from the flow guide pipe 212 and the heat dissipation fins 211, and conducts the heat out of the stage light through the vent 220, thereby achieving rapid heat dissipation of the stage light.

[0036] In a preferred embodiment of the present invention, the cooling medium is gas. When the gas flows between the lamp head 100 and the support arm 200, the sealing requirement is low, and even if there is an accidental leak, it will not cause any damage to the components inside the stage lamp.

[0037] In a preferred embodiment of the present invention, the system further includes a light source 110 and a heat insulation cavity 120 covering the light source 110. The heat insulation cavity 120 is connected to the heat transfer medium inlet of the heat dissipation assembly. The power assembly also includes at least one blower mechanism 410, which blows cooling medium from the cold medium outlet of the heat dissipation assembly into the heat insulation cavity 120 to dissipate heat from the light source 110. The heat insulation cavity 120 directs all heat to the heat dissipation assembly, preventing the heat from the light source 110 from dissipating into the lamp holder 100 and damaging other components inside the lamp holder 100. The heat insulation cavity 120 includes a cylindrical body 121 and a heat insulation sheet 122 covering the cylindrical body 121. The heat insulation sheet 122 seals one end of the cylindrical body 121, and the light from the light source 110 is emitted from the heat insulation sheet 122. The other end of the cylindrical body 121 is connected to the heat transfer medium inlet of the heat dissipation assembly.

[0038] In a preferred embodiment of the present invention, a diversion cavity 130 is further included. The diversion cavity 130 has a first sealed chamber 131 and a second sealed chamber 132. The power assembly includes at least one exhaust mechanism 420. The cold medium outlet of the heat dissipation assembly is connected to the first sealed chamber 131. The first sealed chamber 131 also has an exhaust port. The exhaust port is equipped with the exhaust mechanism 420. The bottom of the heat insulation cavity 120 is connected to the second sealed chamber 132 and is finally connected to the hot air inlet of the heat dissipation assembly through the second sealed chamber 132. The diversion cavity 130 separates the low-temperature cooling medium from the high-temperature cooling medium, and the low-temperature cooling medium in the first sealed chamber 131 is drawn out from the exhaust port by the exhaust mechanism 420 and fills the entire interior of the lamp head 100, which can dissipate heat to other components inside the lamp head 100. Then, it is blown into the heat insulation cavity 120 by the blower mechanism 410 to dissipate heat to the light source 110, thus achieving heat dissipation for the entire lamp head 100.

[0039] In a preferred embodiment of the present invention, the lamp holder 100 has side plates 140 pivotally connected to the support arm 200 on both sides. At least a portion of the cold air duct connecting the cold medium outlet to the first sealed chamber 131 is formed by a cover plate 150 fastened to the side plates 140, and / or at least a portion of the hot air duct connecting the hot medium inlet to the second sealed chamber 132 is formed by a cover plate 150 fastened to the side plates 140. The cold air duct and / or the hot air duct are formed directly by fastening the cover plate 150 to the side plates 140. The cover plate 150, being a sheet metal component, is readily available and easy to manufacture. Furthermore, it fully utilizes the side plates of the support arm 200, eliminating the need for additional air duct installation and avoiding the aging problem of the air duct.

[0040] In this embodiment, the cold air duct is connected to the first sealed chamber 131, and the hot air duct is connected to the second sealed chamber 132.

[0041] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A stage light internal circulation heat dissipation system, characterized in that, The system includes a support arm, a lamp head, and a circulating heat dissipation system. The lamp head is pivotally connected to the support arm via a pivot shaft, which is a shaft-tube structure. The internal space of the lamp head is connected to the internal space of the support arm via the pivot shaft. The circulating heat dissipation system includes a cooling medium, a heat dissipation component located within the support arm, and a power component that promotes the circulation of the cooling medium between the lamp head and the heat dissipation component through the shaft-tube structure. The cooling medium is isolated from the external space of the stage light. The heat dissipation assembly includes heat dissipation fins, a flow guide pipe passing through the heat dissipation fins for guiding the cooling medium, and a heat dissipation fan for dissipating heat from the heat dissipation fins. The support arm is provided with a ventilation port corresponding to the heat dissipation fan. The cooling medium is a gas; It also includes a light source and a heat insulation cavity that covers the light source. The heat insulation cavity is connected to the heat medium inlet of the heat dissipation component. The power component also includes at least one blower mechanism that blows the cooling medium from the cold medium outlet of the heat dissipation component into the heat insulation cavity. The device also includes a diversion cavity, which has a first sealed chamber and a second sealed chamber. The power assembly includes at least one exhaust mechanism. The cold medium outlet of the heat dissipation assembly is connected to the first sealed chamber. The first sealed chamber also has an exhaust port, which is equipped with the exhaust mechanism. The heat insulation cavity is connected to the hot air inlet of the heat dissipation assembly through the second sealed chamber. The low-temperature cooling medium in the first sealed chamber is drawn out from the exhaust port by the exhaust mechanism and fills the entire interior of the lamp head to dissipate heat from the components inside the lamp head. Then, it is blown into the heat insulation chamber by the blower mechanism to dissipate heat from the light source, thereby achieving heat dissipation for the entire lamp head.

2. The stage light internal circulation heat dissipation system according to claim 1, characterized in that, The lamp head is pivotally connected to the support arm via two pivot shafts, both of which are shaft tube structures. The cooling medium flows in from one of the shaft tube structures and flows out from the other shaft tube structure.

3. The stage lamp internal circulation heat dissipation system according to claim 1, characterized in that, The cooling medium enters and exits the lamp head through the same pivot shaft.

4. The stage lamp internal circulation heat dissipation system according to claim 3, characterized in that, A connecting pipe is provided inside the pivot shaft. The connecting pipe includes an inner pipe and an outer pipe. The cooling medium flows between the lamp head and the support arm through the inner pipe and the interlayer between the inner pipe and the outer pipe. A rotary seal is provided on the inner pipe and / or the outer pipe.

5. The stage light internal circulation heat dissipation system according to claim 3, characterized in that, The lamp head is pivotally connected to the support arm via two pivot shafts, both of which are shaft tube structures. The cooling medium is divided into two streams, and each stream of cooling medium circulates between the lamp head and one of the heat dissipation components via only one pivot shaft.

6. The stage lamp internal circulation heat dissipation system according to claim 1, characterized in that, The lamp head has side plates on both sides that are pivotally connected to the support arm. The cold air duct connecting the cold medium outlet to the first sealed chamber is at least partially formed by a cover plate fastened to the side plate, and / or the hot air duct connecting the hot medium inlet to the second sealed chamber is at least partially formed by a cover plate fastened to the side plate.

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