Stage lamp with effect disc uniform in heat dissipation

Abstract

The utility model relates to the technical field of stage lamps, in particular to a stage lamp with an effect disc uniform in heat dissipation, which structurally comprises a lamp holder, a support arm and a bottom case, the support arm is pivoted on the bottom case, and the lamp holder is pivoted on the support arm; a light source emitting light beams is arranged in the lamp holder, at least one effect disc is arranged in the light beam direction, the effect disc selectively and partially cuts in / cuts out the light beams, the heat bridge structure is connected to the effect disc or integrated in the effect disc, and the heat conductivity coefficient of the heat bridge structure is higher than that of the effect disc. Wherein the heat bridge structure forms heat conduction between an irradiated area of the effect disc and / or a peripheral high-temperature area of the irradiated area and a non-irradiated low-temperature area. The problems of non-uniform heat distribution and local overheating are effectively solved, the heat resistance of the effect disc is improved, thermal deformation or fusion failure is prevented, the service life of the effect disc is prolonged, and the reliability and performance stability of the stage lamp are improved.

Description

Technical Field

[0001] This utility model relates to the field of stage lighting technology, and in particular to a stage light with uniform heat dissipation of the effect panel. Background Technology

[0002] Stage lighting equipment is an indispensable and crucial component of modern stage performances, events, architectural lighting, and landscape lighting. By projecting beams of light with specific colors, patterns, shapes, and dynamic changes, it creates diverse visual effects and atmospheres. With technological advancements, stage lighting places increasingly higher demands on the brightness, color saturation, and response speed of light sources. To meet these requirements, high-power, high-brightness light sources, such as high-power LED modules or discharge lamps, are widely used in stage lighting.

[0003] However, high-power light sources generate powerful beams of light, but also produce enormous amounts of heat. This heat not only needs to be dissipated into the environment through the overall cooling system of the lighting fixture (such as radiators, fans, heat pipes, etc.), but also directly or indirectly affects various optical effect components in the light path. Optical effect components, such as gobos, color gobos, prisms, and especially "fire discs" used to simulate flames or special textures, are the core components for stage lighting to achieve complex lighting effects. These effect components are usually made of glass, metal, or high-temperature resistant plastics and are mounted on rotating or movable frames, changing the shape of the projected beam by cutting into or moving out of the light path.

[0004] In actual use of stage lighting, the effects panel is not uniformly illuminated by the light source beam simultaneously. Typically, only a portion of the effects panel enters the light path, forming a specific "illuminated area," while the rest remains outside the light path, constituting the "unilluminated area" or "peripheral area." When a high-intensity beam directly illuminates the illuminated area of ​​the effects panel, that area rapidly absorbs a large amount of energy and its temperature rises sharply. Because the beam diameter is usually much smaller than the overall size of the effects panel, this localized illumination pattern results in a significant temperature gradient across the panel: the illuminated area reaches extremely high temperatures, potentially hundreds of degrees Celsius or even higher, while the unilluminated area, far from the light source, remains relatively cool.

[0005] For certain types of effect discs, such as metal pattern discs or fire discs, they often feature complex perforated patterns to create intricate light spot effects. While providing optical functionality, these perforated structures significantly increase the fracture or discontinuity of the material. This obstructs the heat transfer path from the illuminated to the unilluminated area within the disc's substrate, reducing the effective heat conduction area and greatly increasing the equivalent thermal resistance. Furthermore, to control weight and volume, effect discs are typically designed to be very thin. Thin disc structures are highly susceptible to thermal stress under high temperatures and large temperature gradients, leading to thermal deformation and affecting the accuracy of the optical effects. In extreme cases, excessively high local temperatures can even cause the metal material to soften, yield, undergo plastic deformation, or even melt and fail, especially in the fragile, fine structural parts of the pattern.

[0006] In existing technologies, the following measures are mainly adopted to address the heat problem inside stage lights: First, improve the overall heat dissipation efficiency of the light source, such as using high-performance heat sinks, fans, or heat pipes. However, this mainly addresses the heat generated by the light source itself and the temperature inside the lamp head cavity. For effect discs directly exposed to the beam, the heat input intensity is extremely high, and relying solely on cavity heat dissipation has limited effect on improving local high temperatures. Second, use materials with higher melting points or higher thermal conductivity to manufacture effect discs, such as using high-temperature resistant glass or metals with slightly better thermal conductivity. However, improvements in material performance are often limited by cost, processing difficulty, and whether the material itself can meet specific optical or mechanical requirements. More importantly, even if a single material with better thermal conductivity is used, for effect discs with complex cutout structures, the cutouts themselves are obstacles to heat conduction, and improving the thermal conductivity of the material cannot fundamentally overcome the huge internal thermal resistance gradient problem caused by the structure. Thirdly, adding airflow cooling or connecting simple heat sinks near the effect disc can help increase convective heat exchange between the effect disc and the environment, but it mainly acts on the surface or edge of the effect disc, and is not ideal for quickly guiding heat from the small, high-temperature and high-thermal-resistance irradiated area inside to these external cooling areas. Utility Model Content

[0007] In order to solve the technical problems existing in the prior art, this utility model provides a stage light with uniform heat dissipation of the effect plate, which can effectively improve the problem of uneven heat distribution and local overheating caused by high-power light source irradiation during the use of the effect plate, improve the heat resistance of the effect plate, prevent thermal deformation or melting failure, thereby helping to extend the service life of the effect plate and improve the reliability and performance stability of the stage light.

[0008] This utility model discloses a stage light with uniform heat dissipation for its effect disc, comprising a lamp head, a support arm, and a base housing. The support arm is pivotally connected to the base housing, and the lamp head is pivotally connected to the support arm. The lamp head contains a light source that emits a light beam and includes at least one effect disc in the direction of the light beam. The effect disc can selectively cut off / cut off portions of the light beam. The light head is characterized by further comprising:

[0009] A thermal bridge structure is connected to or integrated into the effect disk, and the thermal resistance coefficient of the thermal bridge structure is higher than that of the effect disk.

[0010] The thermal bridge structure forms a heat conduction between the irradiated area of ​​the effect disc and / or the high-temperature area surrounding the irradiated area and the low-temperature area without irradiation.

[0011] It is understandable that when stage lights are working, the light source generates a high-intensity beam with significant power, resulting in substantial heat. Since the effects disc only partially enters the beam, the disc is subjected to localized high-intensity irradiation, creating a concentrated "irradiated area" and a relatively cooler "non-irradiated area" or "peripheral area." Without this solution, the heat in the irradiated area primarily diffuses to the non-irradiated area through the thermal conductivity of the effects disc's substrate, and is then dissipated through convection and radiation. However, when the thermal conductivity of the effects disc's substrate is low or its structure (e.g., hollowed-out sections) contains areas with high thermal resistance, heat conduction within the effects disc is severely hindered, leading to extremely high temperatures in the irradiated area and relatively low temperatures in the non-irradiated area, creating a significant temperature gradient. The "thermal bridge structure" of this invention is introduced to solve this problem. This thermal bridge structure is tightly integrated (connected or integrated) with the effects disc, and its material is selected to have a higher thermal conductivity than the effects disc's substrate. When the effects disc is irradiated by the beam, the irradiated area generates and accumulates a large amount of heat. At this point, because the thermal bridge structure provides a low-thermal-resistance heat conduction path, heat from the irradiated area preferentially and quickly passes through this highly thermally conductive "thermal bridge," bypassing any potential thermal bottlenecks in the effect disc substrate (such as perforated sections), and is directly guided or transferred to the non-irradiated areas or the outer perimeter of the effect disc. During operation, the thermal bridge structure continuously disperses heat from the irradiated area, working in conjunction with the thermal conduction of the effect disc substrate, but with higher efficiency in dominant heat dissipation. This combination prevents heat from being highly concentrated in the narrow irradiated area, but rather dispersed more quickly over a larger area of ​​the effect disc.

[0012] According to the present invention, a stage light with uniform heat dissipation of the effect plate includes a thermal bridge structure comprising an annular connecting plate sleeved on the outer edge of the effect plate.

[0013] This design implicitly defines a specific structural form for the thermal bridge: a ring-shaped connecting plate. This plate is positioned on the outside of the effects disc, specifically fitted or connected to its outer edge. This ring-shaped structure, surrounding the effects disc, facilitates the transfer of heat from the area irradiated by the light beam to surrounding areas (especially the outer edge), providing a relatively complete and continuous heat dissipation path. By placing the highly thermally conductive ring-shaped connecting plate at the outer edge of the effects disc, heat conducted from the disc body can be effectively received and rapidly dispersed along the ring-shaped connecting plate, or transferred to the outer edge's heat dissipation structure or the air. The ring-shaped form, located at the outer edge, is chosen because it does not require altering the original structure of the effects disc, and the outer edge of the effects disc typically receives less continuous light beam irradiation, resulting in a relatively lower temperature, making it an ideal area for heat reception and diffusion.

[0014] According to the present invention, a stage light with uniform heat dissipation of the effect plate is provided, wherein the annular connecting plate is configured as an annular flat heat pipe.

[0015] It is understood that this scheme limits the use of a highly efficient heat transfer device—a flat heat pipe—for the annular connecting plate. The heat pipe utilizes the phase change cycle of its internal working fluid (evaporation absorbs heat, condensation releases heat) to achieve heat transfer with extremely low thermal resistance between its two ends. Making the heat pipe into a ring shape and flattening it maintains its highly efficient heat transfer characteristics while allowing it to fit tightly against or be fitted onto the edge of the effect plate, forming a highly efficient annular thermal bridge. Compared to traditional solid high thermal conductivity materials (such as metallic copper), the heat pipe has a higher effective thermal conductivity, enabling faster heat transfer and diffusion along the annular path with greater efficiency.

[0016] According to this utility model, a stage light with uniform heat dissipation for the effect disc is provided, wherein the annular connecting plate is welded / tightly fitted to the outer edge of the effect disc.

[0017] This solution clearly defines the connection method between the ring-shaped connecting plate and the outer edge of the effect disc. Using welding or tight-fitting methods ensures a tight and reliable physical connection between the ring-shaped connecting plate and the effect disc. In thermal management applications, the thermal resistance of the connection interface is a critical factor; a good connection method minimizes interface thermal resistance, ensuring smooth heat transfer from the effect disc body to the ring-shaped connecting plate. Welding typically provides excellent thermal contact, while tight-fitting, through precise dimensional adjustments and mechanical pressure, guarantees contact area and tightness.

[0018] According to the present invention, a stage light with uniform heat dissipation of the effect disc is provided, wherein the thermal bridge structure is configured as a layer of highly thermally conductive material coated around the outer edge of the effect disc.

[0019] This approach describes an alternative method for achieving external thermal bridging: instead of a prefabricated connecting plate, a thin film or coating of highly thermally conductive material is directly applied to the outer edge of the effects plate. This method may simplify the manufacturing process, and the coating layer can better adhere to the microscopic surface of the effects plate's outer edge, providing better thermal contact. The highly thermally conductive material layer also forms a ring-shaped path on the outer edge of the effects plate with higher thermal conductivity than the plate itself, used to collect and disperse heat.

[0020] According to the present invention, a stage light with uniform heat dissipation of an effect plate is provided, wherein the effect plate is configured as a thin sheet-like vacuum cavity heat spreader, and the thermal bridge structure is formed through the internal structure of the thin sheet-like vacuum cavity heat spreader.

[0021] It is understood that this solution differs from the external connection method of the aforementioned solutions. It designs the effects disc itself as a highly efficient heat transfer device—a thin-film vacuum chamber vapor chamber (VC plate, or vapor chamber plate for short). The VC plate is a device that utilizes the phase change (evaporation, transport, condensation) of its internal working fluid for two-dimensional, highly efficient heat transfer. When a portion of the effects disc (the irradiated area) is heated, the fluid inside the VC plate evaporates and absorbs heat in that area. The vapor rapidly diffuses to the cooler areas (the unirradiated area / surrounding area) and condenses, releasing heat. This phase change cycle allows heat to diffuse rapidly and efficiently throughout the entire VC plate, achieving excellent temperature uniformity. In this implementation, the internal structure and working mechanism of the VC plate itself constitute the aforementioned "thermal bridge structure," which is no longer an external component but an inherent functional layer of the effects disc itself.

[0022] According to the present invention, a stage light with uniform heat dissipation of the effect plate includes a thin-film vacuum chamber heat spreader comprising a vacuum chamber body, wherein the interior of the vacuum chamber body is provided with capillary structures and a heat-conducting working fluid having phase change characteristics.

[0023] This scheme outlines the core components of a VC vapor chamber's operation. A vacuum chamber provides a low-pressure environment for the working fluid's phase change, allowing evaporation to occur at a lower temperature. Capillary structures (such as powder sintering layers, meshes, and grooves) distributed along the chamber's inner walls use capillary force to transport the condensed working fluid from the condensation zone back to the evaporation zone, forming a closed loop. The heat-conducting working fluid (such as pure water or methanol) is the medium for phase change heat transfer; it evaporates in the heated zone and condenses in the exothermic zone. The synergistic effect of these internal structures and the working fluid is the foundation for the VC plate's ultra-high effective thermal conductivity.

[0024] According to this utility model, a stage light with uniform heat dissipation for an effect disc is provided, wherein the vacuum cavity is configured as an annular hollow circuit close to the edge of the effect disc; the heat-absorbing portion of the heat-conducting working fluid inside the annular hollow circuit for evaporation and heat absorption is located / close to the irradiated area of ​​the effect disc, and the heat-dissipating portion of the heat-conducting working fluid inside the annular hollow circuit for condensation and heat release is located / close to the non-irradiated area of ​​the effect disc.

[0025] This solution provides a specific internal structural design for a VC vapor chamber on an effects disc: the main vacuum chamber and capillary structure are designed as a ring-shaped hollow circuit, and this circuit is close to the edge of the effects disc. This design allows heat to be "absorbed" from the irradiated area of ​​the effects disc (through the heat-absorbing part of the ring-shaped hollow circuit, where the working fluid evaporates), and then the vapor is rapidly transferred along the ring-shaped hollow circuit to the non-irradiated area at the edge of the effects disc (the heat-dissipating part of the ring-shaped hollow circuit, where the vapor condenses and releases heat). This layout particularly enhances the transport of heat to the edge area and utilizes the edge area as the main heat dissipation interface. The heat-absorbing and heat-dissipating parts of the ring-shaped hollow circuit can be distributed between the irradiated and non-irradiated areas of the effects disc, ensuring effective heat migration from the high-temperature zone to the low-temperature zone.

[0026] According to this utility model, a stage light with a uniform heat dissipation effect disc is provided, wherein the effect disc is a fire disc or a pattern disc.

[0027] It is understood that this solution clarifies the specific application type of the effect discs targeted by this utility model. Fire Pattern Discs and Gobos are commonly used effect discs in stage lighting. They are typically made of thin metal sheets and form complex patterns through methods such as perforation. While these perforated patterns can produce diverse optical effects, they also result in discontinuities in the disc material, especially in the perforated areas where there is significant thermal resistance, severely hindering the uniform conduction of heat within the disc. Therefore, fire patterns and gobos are typical examples and primary carriers of the problem of uneven heating and easy damage to effect discs in stage lighting. Applying the thermal bridge structure of this utility model to these effect discs can directly and specifically solve their inherent heat dissipation problems, highlighting the application value and technical advantages of this utility model.

[0028] According to the present invention, a stage light with uniform heat dissipation of the effect disc includes a thermal bridge structure comprising a plurality of intersecting high thermal conductivity spokes; each of the high thermal conductivity spokes makes heat transfer contact with the surface of the effect disc and bypasses the hollow area of ​​the effect disc and extends from the irradiated area of ​​the effect disc to the non-irradiated area / surrounding area.

[0029] This scheme describes a spoke-like thermal bridge structure. These spokes have high thermal conductivity and extend outwards from the beam-irradiated area of ​​the effects disc to the unirradiated or peripheral areas. Crucially, these spokes are designed to make heat-conducting contact with the effects disc surface, diverting heat from the heated area into the spokes themselves, and they are specifically designed to bypass the cutout areas of the effects disc. By bypassing the high thermal resistance of the cutout areas, the spokes provide one or more direct, low thermal resistance radial channels, rapidly guiding heat from the central heated area to the peripheral heat-dissipating area. Multiple intersecting (forming a network) or independently distributed spokes can more comprehensively cover the heated area and disperse its heat to the periphery, improving heat evenness and dissipation efficiency.

[0030] According to the present invention, a stage light with uniform heat dissipation of the effect plate includes a thermal bridge structure comprising a plurality of intersecting vacuum channels formed inside the effect plate; the vacuum channels are provided with capillary structures and a heat-conducting working fluid with phase change characteristics; each vacuum channel bypasses the hollow area of ​​the effect plate and extends from the irradiated area of ​​the effect plate and / or the high-temperature area around the irradiated area to the low-temperature area of ​​the non-irradiated area.

[0031] This solution combines the aforementioned high thermal conductivity spoke concept with VC technology. The thermal bridge structure is no longer a simple solid high thermal conductivity spoke, but rather a vacuum channel formed inside the effect disc. These channels possess the typical structure and working principle of VC (vacuum, capillary structure, working fluid), thus they are essentially miniature heat pipes or VC channels. These vacuum channels are also designed to intersect and form spokes, bypassing the patterned perforations of the effect disc, extending from the irradiated area and / or the surrounding high-temperature area to the non-irradiated low-temperature area. This design combines the advantages of radial heat conduction paths with the ultra-efficient phase change heat transfer capability of VC technology, enabling highly efficient and rapid directional heat transfer from the heated area to the surrounding area along these internal channels, achieving superior local heat dissipation and overall temperature uniformity, especially suitable for effect discs with complex perforated patterns.

[0032] The main technical effect of this utility model of a stage light with uniform heat dissipation is as follows:

[0033] 1. Effectively reduces the peak temperature of the irradiated area of ​​the effects plate. Because the thermal bridge structure provides a low-thermal-resistance heat conduction path, heat can be carried away from the irradiated area more quickly. According to the basic principles of heat conduction (the heat transfer rate is proportional to the temperature difference and thermal resistance), under the same heat input, reducing thermal resistance will decrease the temperature difference, or slow down the rate of heat accumulation before reaching a certain temperature equilibrium. Therefore, the maximum temperature of the irradiated area will be significantly reduced, preventing the temperature from remaining near the material's thermal deformation or melting point for an extended period.

[0034] 2. Improves the temperature uniformity of the effects panel. The thermal bridge structure rapidly transfers heat from the irradiated area and / or the surrounding high-temperature areas to the non-irradiated low-temperature areas, causing the temperature of the originally high-temperature areas to decrease and the temperature of the low-temperature areas to increase relatively. This greatly reduces the temperature difference between different areas of the effects panel, resulting in a more uniform temperature distribution. A uniform temperature distribution can effectively reduce thermal stress caused by temperature gradients, reducing the risk of structural fatigue or damage due to stress concentration.

[0035] 3. Enhance the overall heat dissipation capacity of the effects panel. After heat is quickly dispersed to a larger area of ​​the effects panel (including the surrounding area), the effective surface area for convection heat exchange with the surrounding air increases, or the temperature of areas that were originally low in temperature and had low heat exchange efficiency rises, thereby improving the efficiency of the entire effects panel in dissipating heat to the environment.

[0036] 4. Improved durability and reliability of effects discs. By lowering the maximum temperature, reducing temperature gradients and thermal stress, problems such as thermal deformation, material degradation, and even melting caused by overheating are directly avoided or significantly mitigated. This allows the effects discs to maintain their optical performance and structural integrity even under high-power light source illumination, significantly improving their lifespan and the overall operational reliability of the stage lighting. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 This is a diagram of the internal structure of the stage light head of this utility model;

[0039] Figure 2 This is an assembly diagram of the fire plate and the annular connecting plate in Embodiment 1;

[0040] Figure 3 This is an exploded view of the fire plate and the annular connecting plate in Embodiment 1;

[0041] Figure 4 This is an internal perspective view of the fire plate in Embodiment 3 (showing the distribution of the vacuum chambers);

[0042] Figure 5 This is an axial sectional view of the fire plate in Embodiment 3;

[0043] Figure 6 yes Figure 5 A magnified view of a portion of the image.

[0044] Figure label:

[0045] 100. Lamp holder;

[0046] 1. Light source, 2. Effects panel, 3. Circular connecting plate, 4. Vacuum chamber. Detailed Implementation

[0047] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as limiting this utility model.

[0048] Example 1

[0049] like Figures 1 to 3 As shown, this embodiment of a stage light with uniform heat dissipation for its effect disc includes a lamp head 100, a support arm, and a base housing. The support arm is pivotally connected to the base housing, and the lamp head 100 is pivotally connected to the support arm. A light source 1 is disposed inside the lamp head 100, which is used to generate a high-intensity beam of light required for stage lighting. At least one effect disc 2 is also pivotally connected inside the lamp head 100. When the stage light is working, a portion of the effect disc 2 will cut into the light path of the light source 1, thereby receiving direct illumination from the light beam. Specifically, in this embodiment, the effect disc 2 is a fire disc, which has a hollowed-out pattern and is relatively thin.

[0050] The present invention differs from the prior art in that the effect panel 2 of the stage light is further provided with a thermal bridge structure. The thermal resistance coefficient of the thermal bridge structure is higher than that of the effect panel 2, and the thermal bridge structure is configured to create a low thermal resistance heat conduction path between the irradiated area and / or the high-temperature area surrounding the irradiated area and the low-temperature area without irradiation of the effect panel 2, so as to promote uniform heat distribution.

[0051] Specifically, the thermal bridge structure includes an annular connecting plate 3. The annular connecting plate 3 is connected to or fitted onto the outer edge of the effect plate 2. The material of the annular connecting plate 3 has a higher thermal conductivity than the substrate of the effect plate 2. For example, the annular connecting plate 3 can be made of a metal with excellent thermal conductivity (such as copper or aluminum) or a high-efficiency heat transfer device (such as a heat pipe flattened or bent into a ring shape), or even a ring made of graphene material with extremely high thermal conductivity.

[0052] The annular connecting plate 3 is fixed to the outer edge of the effect plate 2 via a reliable connection method to ensure good thermal contact. Typical connection methods include welding (such as spot welding or circumferential welding) and tight fit (such as interference fit, where the annular connecting plate is mechanically pressed onto the outer edge of the effect plate). These connection methods enable efficient heat transfer from the effect plate 2 to the annular connecting plate 3.

[0053] When heat is generated in the irradiated area of ​​the effect disc 2, this heat is not only conducted outward through the material of the effect disc 2 itself, but can also be quickly and effectively transferred to the annular connecting plate 3 adjacent to its outer edge. Because the annular connecting plate 3 has high thermal conductivity, it can more effectively and quickly collect and distribute heat on the ring, thereby greatly reducing the overall thermal resistance of heat transfer from the high-temperature area to the outside. Especially when the effect disc 2 has many open areas, the annular connecting plate 3 provides a bypass to these high-thermal-resistance areas.

[0054] By attaching a highly thermally conductive annular connecting plate to the outer edge of the effects disc, a low-thermal-resistance heat transfer path is provided, significantly accelerating the diffusion of heat from the irradiated area to the surrounding area of ​​the effects disc. This results in a more uniform temperature distribution on the effects disc, effectively reducing local peak temperatures, minimizing temperature gradients and thermal stress, thereby reducing the risk of thermal deformation and melting. Furthermore, the more uniform temperature distribution also promotes convective heat transfer efficiency between the effects disc and the environment (such as air), improving overall heat dissipation performance and the durability of the effects disc.

[0055] Optionally, the annular connecting plate 3 and the effect plate 2 are integrally molded structures made of the same material. The effect plate 2 has a hollow shape, while the annular connecting plate 3 does not have a hollow shape.

[0056] Example 2

[0057] This embodiment provides a solution for forming a thermal bridge structure by coating the outer edge of the effect disc 2 with a highly thermally conductive material. This solution is also based on constructing a low-thermal-resistance heat transfer path on the effect disc 2. The basic structure of the stage light is the same as in Embodiment 1, including a lamp head 100, a light source 1, and an effect disc 2.

[0058] In this embodiment, the thermal bridge structure is configured as a layer of highly thermally conductive material coated around the outer edge of the effect pad 2. A layer of material with a thermal conductivity significantly higher than that of the effect pad 2 substrate can be applied to the outer edge surface of the effect pad 2 through methods such as coating, printing, or spraying. This highly thermally conductive material can be a highly thermally conductive paste, thermally conductive adhesive, metal coating, or a polymer layer containing highly thermally conductive fillers (such as metal powder, carbon nanotubes, or graphene). The thickness of the coating layer can be controlled as needed, typically ranging from micrometers to hundreds of micrometers, and forms a continuous or discontinuous ring structure covering the outer edge of the effect pad 2.

[0059] When the temperature of the irradiated area of ​​Effects Pad 2 rises, the heat is conducted through the pad's substrate to its outer edge. Here, the heat enters the surrounding highly thermally conductive coating. Due to its high thermal conductivity, this coating rapidly absorbs the heat and quickly transfers it circumferentially to the entire outer edge of Effects Pad 2. This highly thermally conductive layer acts as a thermal bridge, effectively diverting heat from the irradiated area away from the heat source, especially when there are internal cutouts in Effects Pad 2 that impede its own heat conduction.

[0060] A high thermal conductivity layer is formed on the outer edge of the effects plate through a simple and easy-to-implement coating process, creating an effective thermal bridge. This thermal bridge can quickly disperse heat from the irradiated area, significantly improving the temperature uniformity of the effects plate and reducing the risk of localized overheating. Compared to mechanically connected or welded ring plates, coating sometimes offers better adhesion and lower interfacial thermal resistance (depending on material properties and process), and the process is relatively simple and may be less expensive. It also helps reduce thermal stress, improves the high-temperature resistance and lifespan of the effects plate, and indirectly improves heat exchange efficiency with air.

[0061] Example 3

[0062] This embodiment provides a solution where the effect panel 2 itself is designed as an ultra-thin VC heat spreader, and its internal structure forms a thermal bridge. The basic structure of the stage light is the same as in Embodiment 1, including a lamp head 100, a light source 1, and an effect panel 2.

[0063] In this embodiment, the effect plate 2 is designed and manufactured as a thin-film vacuum chamber vapor chamber heat exchanger, commonly known in manufacturing as an ultra-thin VC heat exchanger, such as... Figures 4 to 6 As shown, the ultra-thin VC vapor chamber includes a sealed vacuum chamber 4. The interior of the vacuum chamber 4 is equipped with capillary structures (such as metal mesh, sintered powder, or grooves) and filled with a small amount of a thermally conductive working fluid with phase change properties (such as pure water, methanol, acetone, etc.). The thickness of the VC vapor chamber is controlled to be extremely thin to meet the space requirements of the effect panel, and the shell of the VC vapor chamber can support or be etched to form the optically required perforated patterns.

[0064] To optimize heat transfer on the effect plate, the vacuum chamber 4 includes an annular hollow loop near the edge of the effect plate 2, or a network of channels radiating from the center of the effect plate to the edge. These internal channels / loops constitute heat absorption spaces for the evaporation of the working fluid and heat release spaces for condensation. When the temperature of the irradiated area of ​​the effect plate 2 (usually located in the center or off-center) rises, the heat-conducting working fluid in this area absorbs heat and rapidly evaporates into vapor, forming a heat absorption space. The vapor diffuses at extremely high speed within the chamber 4 to lower-temperature areas (such as the annular loop at the edge or other non-irradiated areas). In these heat release areas, the vapor condenses upon cooling, releasing latent heat and returning to a liquid state. The liquid working fluid flows back to the heated area through capillary structures or gravity, circulating repeatedly to achieve efficient heat transfer. This phase change heat transfer process constructs the efficient thermal bridge structure inside the VC vapor chamber.

[0065] By utilizing the phase change heat transfer mechanism of the working fluid inside the VC vapor chamber, an extremely high equivalent thermal conductivity can be achieved. Using the VC vapor chamber directly as the substrate of the effects panel allows heat to be transferred and diffused from the irradiated area (hot spot) to the entire panel surface, including the edge areas, at a speed and efficiency far exceeding that of traditional solid materials. This significantly improves the temperature uniformity of the effects panel, eliminating or significantly reducing localized hot spots, resulting in an extremely uniform temperature distribution. This completely solves problems such as thermal deformation and melting caused by localized high temperatures, greatly improving the reliability and lifespan of the effects panel when dealing with high-power light sources. Simultaneously, the uniform panel temperature also helps improve its overall heat exchange efficiency with the environment.

[0066] Example 4

[0067] This embodiment provides two implementations of the thermal bridge structure. The main feature of the two structures is that the thermal bridge structure is designed to more directly connect the irradiated area of ​​the effect disc 2 and / or the high-temperature area surrounding the irradiated area with the non-irradiated low-temperature area. This is especially suitable for effect discs 2 with complex cutout patterns, so as to bypass or pass through the high thermal resistance area caused by the cutouts. Specifically:

[0068] In the first implementation of this embodiment, the thermal bridge structure includes several intersecting, highly thermally conductive spokes. These highly thermally conductive spokes can be made of highly thermally conductive materials (such as copper, pyrolytic graphite sheets, carbon fiber composites, etc.). They form good thermal conductivity contact with the surface or interior of the effect disc 2 and are arranged to effectively bypass the hollowed-out area of ​​the effect disc 2, extending from the irradiated area of ​​the effect disc 2 (usually located in the center or off-center position) to the non-irradiated low-temperature area. These spokes can converge in the heated central area of ​​the effect disc and then radiate outward to form a structure similar to a "skeleton" or "support mesh," which is fixed to the effect disc 2 by welding, bonding, embedding, or mechanical fastening.

[0069] In the second implementation of this embodiment, the thermal bridge structure includes a plurality of intersecting vacuum channels formed within the effect disk 2. The internal structure of these vacuum channels is similar to that of the VC vapor chamber in Embodiment 3, with capillary structures distributed within and a thermally conductive working fluid possessing phase change characteristics. These vacuum channels are arranged to bypass the cutout area of ​​the effect disk 2 and extend from the irradiated area and / or the high-temperature area surrounding the irradiated area to the non-irradiated low-temperature area. For example, this internal VC channel structure can be formed by etching a channel network of a predetermined shape between two thin layers of the effect disk 2, then sealing the two layers, evacuating the vacuum, and injecting the working fluid.

[0070] This embodiment effectively bypasses or traverses areas of high thermal resistance caused by the perforated structure of the effects disc by constructing directional, highly thermally conductive pathways (whether solid spokes or internal VC channels) on the effects disc 2. Heat can be quickly and efficiently transferred from the heat source area to the heat dissipation area of ​​the disc along these pre-designed, highly thermally conductive paths. In particular, by using internal VC channels, the high efficiency of phase change heat transfer can be utilized to quickly transfer heat from hot spots to distant areas with minimal temperature difference, achieving effective heat dissipation and temperature uniformity even when the effects disc has complex and dispersed perforated areas. This structure provides a more flexible and efficient solution for heat dissipation of complex optical effects components, significantly improving their high-temperature resistance and reliability.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A stage light with uniform heat dissipation of the effect disc, comprising a lamp head (100), a support arm, and a base housing, wherein the support arm is pivotally connected to the base housing, and the lamp head (100) is pivotally connected to the support arm; the lamp head (100) is provided with a light source (1) for emitting a light beam and includes at least one effect disc (2) in the direction of the light beam, wherein the effect disc (2) can selectively partially cut in / out of the light beam, characterized in that, Also includes: A thermal bridge structure is connected to or integrated into the effect plate (2), and the thermal resistance coefficient of the thermal bridge structure is higher than that of the effect plate (2). The thermal bridge structure forms a thermal conduction between the irradiated area of ​​the effect disk (2) and / or the high-temperature area surrounding the irradiated area and the low-temperature area without irradiation.

2. The stage light with uniform heat dissipation of the effect disc according to claim 1, characterized in that, The thermal bridge structure includes an annular connecting plate (3), which is sleeved on the outer edge of the effect plate (2).

3. The stage light with uniform heat dissipation of the effect disc according to claim 2, characterized in that, The annular connecting plate (3) is configured as an annular flat heat pipe.

4. The stage light with uniform heat dissipation of the effect disc according to claim 2, characterized in that, The annular connecting plate (3) is welded / tightly fitted to the outer edge of the effect plate (2).

5. The stage light with uniform heat dissipation of the effect disc according to claim 1, characterized in that, The thermal bridge structure is configured as a layer of highly thermally conductive material coated around the outer edge of the effect disk (2).

6. The stage light with uniform heat dissipation of the effect disc according to claim 1, characterized in that, The effect plate (2) is set as a thin sheet-like vacuum cavity heat spreader, and the heat bridge structure is formed through the internal structure of the thin sheet-like vacuum cavity heat spreader.

7. The stage light with uniform heat dissipation of the effect disc according to claim 6, characterized in that, The thin-film vacuum chamber heat spreader includes a vacuum chamber (4), the interior of which is distributed with capillary structures and a heat-conducting working fluid with phase change characteristics.

8. The stage light with uniform heat dissipation of the effect disc according to claim 7, characterized in that, The vacuum cavity (4) is configured as an annular hollow loop close to the edge of the effect disc (2).

9. The stage light with uniform heat dissipation of the effect disc according to claim 1, characterized in that, The effect plate (2) is a fire plate or a pattern plate.

10. The stage light with uniform heat dissipation of the effect disc according to claim 1, characterized in that, The thermal bridge structure includes several intersecting vacuum channels formed inside the effect plate (2); the vacuum channels are internally distributed with capillary structures and a heat-conducting working fluid with phase change characteristics; Each of the vacuum channels bypasses the cutout area of ​​the effect disk (2) and extends from the irradiated area of ​​the effect disk (2) and / or the high-temperature area around the irradiated area to the low-temperature area of ​​the non-irradiated area.

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