Efficient and uniform demisting device suitable for stage lamp and stage lamp provided with efficient and uniform demisting device

Abstract

The efficient and uniform demisting device suitable for the stage lamp and the stage lamp provided with the efficient and uniform demisting device are provided, the demisting device comprises the draught fan and the air guiding device, the draught fan generates air flow and guides the air flow to a lens of the stage lamp through the air guiding device, and an air inlet of the draught fan is far away from the lens. The demisting device is arranged in the lamp holder, hot air in the lamp holder can be extracted and blown to the lens, the lens is heated, and therefore demisting is fast and good, the structural arrangement is simple and easy to implement, the demisting efficiency and the demisting effect are improved, and the demisting device is more economical and environmentally friendly; secondly, the air guide device is arranged between the air outlet of the fan and the lens, an outlet air duct of the air guide device is divided into a plurality of shunting air nozzles through a plurality of flow deflectors, and airflow is directionally guided to different areas of the lens through the shunting air nozzles in different directions, so that the airflow is prevented from being concentrated in an edge area or a middle area of the lens; the uniformity of the overall airflow coverage of the lens is improved, and an excellent demisting effect is further provided.

Description

Technical Field

[0001] This utility model relates to the field of stage lighting technology, and in particular to a highly efficient and uniform defogging device suitable for stage lights and a stage light equipped with such a device. Background Technology

[0002] During prolonged operation, stage lights generate significant heat due to the continuous operation of core components such as the high-power light source and drive circuit in the lamp head. This causes the inner side of the light-emitting lens at the light outlet to be continuously heated, while the outer side, which is in contact with the outside, remains at a lower temperature. This results in a large temperature difference between the inner and outer sides of the light-emitting lens, making it easy for a layer of water vapor to adhere to the lens, severely affecting the clarity and light output of the stage lights.

[0003] To address the fogging issue during stage lighting use, the mainstream solution typically employs active heating defogging technology. This involves heating the light-emitting lens to remove fog, usually through the installation of heating wires or by directly blowing hot air onto the lens. However, the heat from the lens is concentrated in the central area, and there is a temperature difference between the edge and center areas. Existing fans that blow hot air from one side of the lens are usually located on either side of the lamp head, making it difficult to direct airflow to the central area of ​​the lens. Even when air is concentrated in the central area, it is difficult to achieve uniform airflow. Utility Model Content

[0004] The present invention aims to overcome at least one of the defects of the prior art mentioned above, and to provide a highly efficient and uniform defogging device suitable for stage lights and a stage light equipped with such a device.

[0005] This technical solution provides a highly efficient and uniform defogging device suitable for stage lights, including a fan and an air guide device. The fan generates airflow and guides it to the lens of the stage light through the air guide device. The air inlet of the fan is far from the lens. The air guide device is located at one end of the air outlet of the fan and is placed between the lens and the fan. At least one guide vane in the outlet air duct of the air guide device is used to separate the outlet air duct and form at least two split air nozzles, so that the airflow blows towards the middle area and the edge area of ​​the lens respectively.

[0006] In this technical solution, the efficient and uniform defogging device includes a fan and an air guide device. The fan's air inlet is positioned inside the lamp head of the stage light, away from the lens. This allows the fan to draw hot air from inside the lamp head and blow it to the lens, heating it and reducing the temperature difference between the two sides of the lens, resulting in rapid and effective defogging. No additional devices are needed inside the stage light to provide hot air; the structure is simple and easy to implement, improves defogging efficiency, and is more economical and environmentally friendly. Furthermore, the air guide device, located between the fan outlet and the lens, is used to divert the airflow from the fan. Specifically, the outlet duct of the air guide device is divided into multiple diversion nozzles by several guide vanes. The design of these multiple guide vanes optimizes the airflow distribution guided by the air guide device, allowing the hot air to be directed to different areas of the lens through the diversion nozzles in different directions. This avoids airflow concentration at the lens edges or center, improving the uniformity of airflow coverage across the lens and thus providing excellent defogging performance.

[0007] Furthermore, the air guiding device includes an interconnected air guiding shell and a fan shell, the fan shell being arranged around the air outlet of the fan, and the interior of the air guiding shell forming a main air duct;

[0008] The main air duct includes an inlet air duct and an outlet air duct connected in sequence, and the inlet air duct is connected to the fan casing;

[0009] The longitudinal dimension of the horizontal cross-section of the inlet duct, from the end connecting to the fan casing to the end connecting to the outlet duct, gradually decreases.

[0010] Furthermore, in the outlet air duct, the lateral dimension of the horizontal cross-section connecting one end of the inlet air duct to the end near the lens gradually increases.

[0011] In this technical solution, the overall air duct formed inside the air guiding device is optimized to improve the overall uniformity of airflow and expand the coverage area of ​​the airflow. Specifically, by gradually reducing the longitudinal dimension of the inlet air duct, the cross-sectional area through which the airflow flows in the inlet air duct is reduced, achieving gradual acceleration of the airflow and making the airflow more concentrated. Furthermore, by gradually increasing the lateral dimension of the outlet air duct, the width of the outlet air duct is widened, expanding the coverage area of ​​the airflow, while also reducing the velocity attenuation of the airflow at the edge of the air duct and improving the uniformity of airflow diffusion.

[0012] Furthermore, several guide vanes are installed within the outlet air duct. These guide vanes are inclined within the outlet air duct, allowing adjacent split air nozzles to have different air outlet angles. Split air nozzles with smaller air outlet angles direct airflow to the central area of ​​the lens, while other split air nozzles direct airflow to the edge area of ​​the lens. Specifically, by setting split air nozzles with different air outlet angles, directional airflow can be delivered to different areas of the lens. Split air nozzles with smaller air outlet angles direct airflow to the central area of ​​the lens, providing a more concentrated airflow there, while other split air nozzles with larger air outlet angles direct airflow to the edge area of ​​the lens, providing a more diffused airflow. This increases the overall coverage area of ​​the airflow provided by the outlet air duct, while also specifically reducing the temperature difference between the central and edge areas of the lens, preventing fogging.

[0013] In one embodiment, a guide vane is provided in the outlet air duct of the air guiding device. At the connection end point with the inlet air duct, the guide vane evenly divides the outlet air duct and forms two diversion nozzles: a first diversion nozzle and a second diversion nozzle.

[0014] The first air diverter nozzle has a larger air outlet angle than the second air diverter nozzle, and the first air diverter nozzle directs the airflow to the edge area of ​​the lens, while the second air diverter nozzle directs the airflow to the middle area of ​​the lens.

[0015] Preferably, the first diverter nozzle has an air outlet angle of 50°, and the second diverter nozzle has an air outlet angle of 20°.

[0016] In one embodiment, the outlet duct of the air guiding device is provided with two symmetrically arranged guide vanes. After the guide vanes evenly separate the end of the outlet duct connected to the inlet duct, they move closer to each other at the end of the outlet duct near the lens to form three sequentially arranged split air nozzles: a first split air nozzle, a second split air nozzle, and a third split air nozzle. The first split air nozzle and the third split air nozzle have the same air outlet angle and are both greater than the air outlet angle of the second split air nozzle.

[0017] The second air duct directs the airflow to the central area of ​​the lens;

[0018] The first airflow diversion nozzle directs the airflow to one side of the lens edge region, and the third airflow diversion nozzle directs the airflow to the other side of the lens edge region.

[0019] In this technical solution, to further improve the defogging efficiency and effect of the lens, multiple defogging devices can be installed inside the lamp head of the stage light. The number of support frames corresponds to the number of efficient and uniform defogging devices, and the multiple support frames are symmetrically arranged with the central axis of the lens as a reference, further improving the coverage area and uniformity of the airflow guided by the defogging devices on the entire lens. Simultaneously, when only one efficient and uniform defogging device is installed inside the lamp head, at least two guide vanes are installed in the outlet duct of the air guide device, forming at least three diverting nozzles. The outlet angles of the three diverting nozzles can be adjusted directionally according to the required blowing direction of the lens, resulting in a larger and more uniform airflow area towards the lens, thereby quickly removing fog from the lens. Preferably, the outlet angle of the first diverting nozzle is 50°, the outlet angle of the third diverting nozzle is 50°, and the outlet angle of the second diverting nozzle is 20°.

[0020] Furthermore, a rectangular opening of 3-10mm is provided on the top edge of one side of the guide housing corresponding to the split nozzle. In use, the rectangular opening faces the middle area of ​​the lens, so that the airflow flowing out of the split nozzle can be blown upward towards the lens at a certain angle, guiding the airflow to cover the entire area of ​​the lens, reducing the speed difference between the airflow blowing towards the edge and center of the lens, and further increasing the overall coverage area and uniformity of the airflow provided by the outlet air duct.

[0021] Preferably, the flow divider is made of 6061-T6 aluminum alloy or PPS composite material; the surface of the flow divider is coated with an anodized coating or a Teflon coating; thereby reducing the friction coefficient of the flow divider surface, effectively preventing droplet adhesion, and enhancing the flow rate.

[0022] Another object of the present invention is to provide a stage light, including a lamp head, a support arm, and a housing. The support arm supports the rotation of the lamp head and is pivotally connected to the housing via a rotation shaft. The lamp head is provided with at least one efficient and uniform defogging device as provided in this technical solution. The lamp head has a light outlet and a lens covering the light outlet. Inside the lamp head are two opposing support plates. The lens is mounted on one end of the support plate, and the efficient and uniform defogging device is positioned close to the light-incoming surface of the lens and mounted on the support plate. This ensures that the efficient and uniform defogging device is mounted on the support plate and vertically positioned below the edge of the lens. The support frame provided on the top side of the lamp head provides connection support for the defogging device, and the defogging device is positioned exactly below the edge of the lens and close to the light-incoming surface of the lens, ensuring that the lens, defogging device, and other functional components in the stage light can operate effectively simultaneously.

[0023] Furthermore, it also includes a light source for generating a light beam, the light source being located at the end of the lamp head away from the light outlet, and the air inlet of the fan being oriented towards the light source. The efficient and uniform defogging device draws in hot air from near the light source and directs it to the lens. This not only makes the structure simple and easy to implement, improves defogging efficiency, and is more economical and environmentally friendly, but also further ensures that the lens, light source, defogging device, and other functional components in the stage light can maintain effective operation simultaneously.

[0024] Optionally, the lens is a convex lens. When a convex lens is used, the defogging device requires a higher airflow in the central area of ​​the lens to achieve uniform heat dissipation. The efficient and uniform defogging device provided in this technical solution can achieve a fast and uniform defogging effect on the lens by directional and quantitative adjustment of the air outlet angle of the diversion nozzle. Optionally, the lens can also be a planar lens.

[0025] The beneficial effects of this utility model are as follows:

[0026] 1. A highly efficient and uniform defogging device suitable for stage lights is provided, including a fan and an air guide device. By positioning the air inlet of the fan away from the lens and inside the lamp head of the stage light, the fan can draw hot air from inside the lamp head and blow it to the lens, thereby heating the lens and reducing the temperature difference between the two sides of the lens to achieve a rapid and good defogging effect. There is no need to add other devices inside the stage light to provide hot air. The structure is simple and easy to implement, improves the defogging efficiency and effect, and is more economical and environmentally friendly.

[0027] 2. By setting several guide vanes at the outlet air duct of the air guide device to form multiple air diversion nozzles with different directions, the airflow distribution guided by the air guide device is optimized through the design of multiple guide vanes. This allows the hot air from the air guide device to be directed to different areas of the lens through the air diversion nozzles in different directions, avoiding the airflow from concentrating in the edge or middle area of ​​the lens, improving the uniformity of the overall airflow coverage of the lens, and thus providing excellent defogging effect. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of a highly efficient and uniform defogging device suitable for stage lights provided by this utility model.

[0029] Figure 2 This is an exploded view of the structure of a high-efficiency and uniform defogging device for stage lights provided by this utility model.

[0030] Figure 3 This is a structural schematic diagram of a stage lamp provided by this utility model.

[0031] Figure 4This is a schematic diagram of the internal structure of the lamp head in a stage lamp provided by this utility model.

[0032] Figure description: Fan 10, air guide device 20, fan housing 201, air guide housing 202, inlet air duct 211, outlet air duct 212, air guide plate 30, lamp head 1, support arm 2, chassis 3, support frame plate 4, defogging device 5. Detailed Implementation

[0033] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, 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.

[0034] Example 1

[0035] like Figures 1-2 As shown, this embodiment provides a highly efficient and uniform defogging device suitable for stage lights, including a fan 10 and an air guide device 20. The fan 10 generates airflow and guides it to the lens of the stage light through the air guide device 20. The air inlet of the fan 10 is far away from the lens. The air guide device 20 is disposed at one end of the air outlet of the fan 10 and placed between the lens and the fan 10. At least one guide vane 30 is used to separate the outlet air duct 212 in the air guide device 20, forming at least two split air nozzles, so that the airflow blows towards the middle area and the edge area of ​​the lens respectively.

[0036] Specifically, by positioning the air inlet of the fan 10 away from the lens and inside the lamp head 1 of the stage light, the fan 10 can draw hot air from inside the lamp head 1 and blow it to the lens, heating the lens and reducing the temperature difference between the two sides of the lens to achieve a rapid and effective defogging effect. This eliminates the need for additional devices inside the stage light to provide hot air, resulting in a simple and easy-to-implement structure that improves defogging efficiency and is more economical and environmentally friendly. Furthermore, the air guide device 20 is located between the air outlet of the fan 10 and the lens to divert the airflow from the fan 10. Specifically, the outlet duct 212 of the air guide device 20 is divided into multiple diverting nozzles by several guide vanes 30. The design of these multiple guide vanes 30 optimizes the airflow distribution guided by the air guide device 20, allowing the hot air from the air guide device 20 to be directed to different areas of the lens through the diverting nozzles in different directions. This avoids airflow concentration at the edge or center of the lens, improving the uniformity of airflow coverage and thus providing an excellent defogging effect.

[0037] Furthermore, the air guiding device 20 includes an air guiding shell 202 and a fan shell 201 connected to each other. The fan shell 201 is arranged around the air outlet of the fan 10, and the air guiding shell 202 forms a main air duct inside.

[0038] The main air duct includes an inlet air duct 211 and an outlet air duct 212 connected in sequence, with the inlet air duct 211 connected to the fan casing 201;

[0039] The longitudinal dimension of the horizontal cross-section of the inlet duct 211, from one end connected to the fan housing 201 to the other end connected to the outlet duct 212, gradually decreases.

[0040] Furthermore, in the outlet air duct 212, the lateral dimension of the horizontal cross-section connecting one end of the inlet air duct 211 to the end near the lens gradually increases.

[0041] Specifically, by gradually reducing the longitudinal dimension of the inlet duct 211, the cross-sectional area through which the airflow flows through the inlet duct 211 is reduced, thereby achieving gradual acceleration of the airflow and making the airflow more concentrated. Furthermore, by gradually increasing the lateral dimension of the outlet duct 212, the width of the outlet duct 212 is widened, expanding the coverage area of ​​the airflow, while also reducing the velocity attenuation of the airflow at the edge of the duct and improving the uniformity of airflow diffusion.

[0042] Furthermore, several guide vanes 30 are installed within the outlet air duct 212. These guide vanes 30 are angled within the outlet air duct 212, allowing adjacent split air nozzles to have different air outlet angles. Split air nozzles with smaller air outlet angles direct airflow to the central area of ​​the lens, while other split air nozzles direct airflow to the edge area of ​​the lens. Specifically, by setting split air nozzles with different air outlet angles, directional airflow can be delivered to different areas of the lens. Split air nozzles with smaller air outlet angles direct airflow to the central area of ​​the lens, providing a more concentrated airflow there, while other split air nozzles with larger air outlet angles direct airflow to the edge area of ​​the lens, providing a more diffused airflow. This increases the overall coverage area of ​​the airflow provided by the outlet air duct 212, while also specifically reducing the temperature difference between the central and edge areas of the lens, preventing fogging.

[0043] Furthermore, a rectangular opening of 3-10mm is provided on one side of the guide housing 202 corresponding to the split nozzle. In use, the rectangular opening faces the middle area of ​​the lens, so that the airflow flowing out of the split nozzle can be blown upward towards the lens at a certain angle, guiding the airflow to cover the entire area of ​​the lens, reducing the speed difference between the airflow blowing towards the edge and center of the lens, and further increasing the overall coverage area and uniformity of the airflow provided by the outlet air duct 212.

[0044] Preferably, the flow divider is made of 6061-T6 aluminum alloy or PPS composite material; the surface of the flow divider is coated with an anodized coating or a Teflon coating; thereby reducing the friction coefficient of the flow divider surface, effectively preventing droplet adhesion, and enhancing the flow rate.

[0045] Example 2

[0046] This embodiment provides a highly efficient and uniform defogging device suitable for stage lights. The difference from Embodiment 1 is that a guide vane 30 is provided in the outlet air duct 212 of the air guide device 20. At the connection end point with the inlet air duct 211, the guide vane 30 evenly divides the outlet air duct 212 and forms two diversion nozzles: a first diversion nozzle and a second diversion nozzle.

[0047] The first airflow nozzle has a larger airflow angle than the second airflow nozzle, and the first airflow nozzle directs the airflow to the edge area of ​​the lens, while the second airflow nozzle directs the airflow to the center area of ​​the lens; the airflow angle of the first airflow nozzle is 50°, and the airflow angle of the second airflow nozzle is 20°.

[0048] Example 3

[0049] like Figures 1-2 As shown, this embodiment provides a highly efficient and uniform defogging device suitable for stage lights. The difference from Embodiment 1 is that two symmetrically arranged guide vanes 30 are provided. After the guide vanes 30 evenly separate the end connecting the outlet air duct 212 and the inlet air duct 211, they approach each other at the end of the outlet air duct 212 near the lens and form three sequentially arranged diverting air nozzles: a first diverting air nozzle, a second diverting air nozzle, and a third diverting air nozzle. The first diverting air nozzle and the third diverting air nozzle have the same air outlet angle and are both greater than the air outlet angle of the second diverting air nozzle.

[0050] The second air duct directs the airflow to the center area of ​​the lens;

[0051] The first airflow splitter directs the airflow to one side of the lens edge area, and the third airflow splitter directs the airflow to the other side of the lens edge area;

[0052] Furthermore, the air outlet angle of the first and third split nozzles is 50°, and the air outlet angle of the second split nozzle is 20°.

[0053] Example 4

[0054] like Figures 3-4As shown, this embodiment provides a stage light, including a lamp head 1, a support arm 2, and a housing 3. The support arm 2 supports the rotation of the lamp head 1 and is pivotally connected to the housing 3 via a rotating shaft. The lamp head 1 is provided with at least one efficient and uniform defogging device 5 as provided in any of embodiments 1-3. The lamp head 1 has a light outlet and a lens covering the light outlet. Inside the lamp head 1, there are two opposing support plates 4. The lens is mounted on one end of the support plate 4, and the efficient and uniform defogging device 5 is positioned close to the light-incoming surface of the lens and mounted on the support plate 4. This ensures that the efficient and uniform defogging device 5 is mounted on the support plate 4 and vertically positioned below the edge of the lens. The support plate 4 provided on the top side of the lamp head 1 provides a connecting support for the defogging device 5, and the defogging device 5 is positioned exactly below the edge of the lens and close to the light-incoming surface of the lens, ensuring that the lens, the defogging device 5, and other functional components in the stage light can operate effectively at the same time.

[0055] Furthermore, it also includes a light source for generating the light beam. The light source is located at the end of the lamp head 1 away from the light outlet. The air inlet of the fan 10 is set towards the light source. The efficient and uniform defogging device 5 draws in hot air from near the light source and guides it to the lens. This not only makes the structure simple and easy to implement, improves the defogging efficiency, but is also more economical and environmentally friendly. At the same time, it further ensures that the lens, light source, defogging device 5 and other functional components in the stage light can maintain effective operation at the same time.

[0056] Optionally, in order to further improve the defogging efficiency and effect of the lens, two defogging devices 5 can be installed in the lamp head 1 of the stage light, respectively installed on two opposing support plates 4. The two support plates 4 and the defogging devices 5 are symmetrically arranged with the central axis of the lens as a reference, which further improves the coverage area and uniformity of the airflow guided by the defogging devices 5 on the lens.

[0057] Optionally, the lens is a convex lens. When a convex lens is used, the defogging device 5 requires a higher airflow in the central area of ​​the lens to achieve uniform heat dissipation. The efficient and uniform defogging device 5 provided in this technical solution can achieve a fast and uniform defogging effect on the lens by adjusting the air outlet angle of the diversion nozzle in a directional and quantitative manner. Optionally, the lens can also be a plane lens.

[0058] Example 5

[0059] like Figures 1-4As shown, this embodiment provides a stage light, which differs from embodiment 4 in that: the lamp head 1 has only one defogging device 5, and the outlet air duct 212 of the air guide device 20 is provided with at least two symmetrically arranged guide vanes 30, so that the outlet air duct 212 of the air guide device 20 forms at least three diverting air nozzles. The air outlet angle of the three diverting air nozzles can be adjusted according to the blowing direction required by the lens, so that the airflow area blowing towards the lens is larger and more uniform, thereby quickly removing the fog from the lens.

[0060] Preferably, the defogging device 5 is the high-efficiency and uniform defogging device 5 provided in Example 3.

[0061] Obviously, the embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A highly efficient and uniform defogging device suitable for stage lights, comprising a fan and an air guiding device, wherein the fan generates airflow and guides the airflow to the lens of the stage light through the air guiding device, characterized in that, The air inlet of the fan is far from the lens. The air guide device is located at one end of the air outlet of the fan and is placed between the lens and the fan. The air outlet duct of the air guide device is provided with at least one guide vane for separating the air outlet duct and forming at least two split nozzles, so that the airflow blows towards the middle area and the edge area of ​​the lens respectively.

2. The efficient and uniform demisting device according to claim 1, characterized in that, The air guiding device includes an interconnected air guiding shell and a fan shell. The fan shell is arranged around the air outlet of the fan, and a main air duct is formed inside the air guiding shell. The main air duct includes an inlet air duct and an outlet air duct connected in sequence. The inlet air duct is connected to the fan shell. The longitudinal dimension of the horizontal cross-section of the inlet duct, from the end connecting to the fan casing to the end connecting to the outlet duct, gradually decreases.

3. The efficient and uniform demisting device according to claim 2, characterized in that, The horizontal dimension of the horizontal cross-section of the outlet air duct, from one end connecting to the inlet air duct to the end near the lens, gradually increases.

4. The efficient and uniform demisting device according to claim 2, characterized in that, The outlet air duct is provided with a number of guide vanes, which are inclined in the outlet air duct so that adjacent split air nozzles have different air outlet angles.

5. The efficient and uniform demisting device according to claim 4, characterized in that, The outlet duct of the air guiding device is provided with two symmetrically arranged guide vanes. At the connection point with the inlet duct, the guide vanes evenly separate the end of the outlet duct from the end of the inlet duct. They then approach each other at the end of the outlet duct near the lens, forming three sequentially arranged split nozzles: a first split nozzle, a second split nozzle, and a third split nozzle. The first split nozzle and the third split nozzle have the same air outlet angle, which is greater than that of the second split nozzle. The second air duct directs the airflow to the central area of ​​the lens; The first airflow diversion nozzle directs the airflow to one side of the lens edge region, and the third airflow diversion nozzle directs the airflow to the other side of the lens edge region.

6. The efficient and uniform demisting device according to any one of claims 2 or 3, characterized in that, The air guide housing corresponding to the air splitter nozzle has a rectangular opening of 3-10mm at its top edge, and the rectangular opening is oriented toward the center area of ​​the lens.

7. The efficient and uniform demisting device according to any one of claims 1-5, characterized in that, The flow guide plate is made of 6061-T6 aluminum alloy or PPS composite material; the surface of the flow guide plate is coated with an anodized coating or a Teflon coating.

8. A stage light, comprising a lamp head, a support arm, and a housing, wherein the support arm supports the rotation of the lamp head, and the support arm is pivotally connected to the housing via a rotating shaft; characterized in that, The lamp head is provided with at least one efficient and uniform defogging device as described in any one of claims 1-7; The lamp head has a light outlet and a lens covering the light outlet. Inside the lamp head, there are two opposing support plates. The lens is mounted on one end of the support plate, and the efficient and uniform defogging device is located near the light-inlet surface of the lens and mounted on the support plate.

9. The stage light according to claim 8, characterized in that, It also includes a light source for generating a light beam, the light source being located at one end of the lamp head away from the light outlet, the air inlet of the fan being oriented toward the light source, and the efficient and uniform defogging device drawing in hot air from the vicinity of the light source and guiding it to the lens.

10. The stage light according to any one of claims 8-9, characterized in that, The lens is a convex lens.

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