Stage spotlight structure and method of use

Abstract

The present application relates to spotlight technical field, especially stage spotlight structure and use method, including ceiling base and light source, ceiling base is composed of flat roof, two limit plates, bolt column and strong elastic limiting piece, the hollow column is provided with multidimensional adjustment part, it includes longitudinal rotating shaft installed in the hollow column, the lower end of longitudinal rotating shaft is rotatably installed with horizontal rotating shaft, the light source is rotated 360 DEG horizontally through longitudinal rotating shaft with hollow column as fulcrum. The present application is through the diamond structure design of load bearing seat, after being vertically sleeved into the limit plate, it is deflected horizontally 90 DEG, that is, it is elastically contacted with the limit plate, the axial pre-tightening of the strong elastic limiting piece is matched, the automatic tractor is according to light intensity or preset signal, through lifting support, traction ring and lifting slider, each arc plate is driven to open and close synchronously. Without manual intervention, the light demand of different programs can be accurately matched, the real-time performance and richness of stage light performance are enhanced.

Description

Technical Field

[0001] This invention relates to the field of spotlight technology, and in particular to a stage spotlight structure and its usage method. Background Technology

[0002] As the core equipment of stage lighting, the ease of installation, flexibility of projection angle, and precision of beam control of stage spotlights directly affect the performance effect. Current technologies often use a hanging base with multiple bolts to rigidly connect the light body to the ceiling. Specifically, this involves a clamping plate and a rotating rod. Turning the handle counterclockwise rotates the rotating rod, causing a limiting block to slide away from the surface, allowing the clamping plate and rubber pad to slide away and disassemble the spotlight body. Limited angle swing is achieved through manual adjustment of the bracket. This is done by rotating a movable screw, causing a movable connecting block to slide up and down on the surface, and then being limited by a limiting rod, allowing the movable rod to slide inside the fixed rod to adjust the length of the fixed rod.

[0003] However, it still has shortcomings in practical use: The installation process is cumbersome and lacks multiple anti-loosening mechanisms. Fixing the lamp body requires aligning and tightening multiple screw holes one by one, which is time-consuming due to working at heights; the connection relies solely on the self-locking of the threads, which is prone to loosening under the continuous vibration of the stage, posing a safety hazard. The beam convergence and divergence adjustment relies on manual replacement of light shields or movement of lens groups. It cannot automatically and continuously change the beam angle according to changes in light source brightness, making it difficult to quickly adapt to the differentiated needs of stage scene changes for light spot shape, resulting in a low degree of automation. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of simple stage lighting installation structures lacking safety and functionality in the existing technology, and to propose a stage spotlight structure and usage method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A stage spotlight structure includes a ceiling base and a light source. The ceiling base consists of a flat top, two limiting plates, bolted posts, and strong elastic limiting components. The lower end of the ceiling base is provided with a double fixing frame, which consists of a load-bearing seat and a hollow column. The load-bearing seat is a rhomboid structure corresponding to the two limiting plates. After the load-bearing seat is vertically installed in the ceiling base, it is horizontally deflected by 90° and then elastically abuts against the limiting plates. The load-bearing seat has an annular groove, and a reinforcing tube for clamping the bolt column is fixedly connected at the center of the annular groove. The load-bearing seat is provided with a fixing part that is horizontally telescopic to radially lock the bolt column located in the reinforcing tube. The fixing part includes an elastic pin that is slidably installed in the load-bearing seat. The hollow column is provided with a multi-dimensional adjustment part, which includes a longitudinal rotating shaft rotatably installed in the hollow column, and a transverse rotating shaft rotatably installed at the lower end of the longitudinal rotating shaft. The light source rotates 360° horizontally with the hollow column as the fulcrum through the longitudinal rotating shaft, and the light source is tilted 120° through the transverse rotating shaft. A double lamp holder is fixedly connected to the light source. The double lamp holder is movably installed at the lower end of the double fixing frame via a hollow column and includes a protective cover fixedly installed on a horizontal rotating shaft. A lamp head holder for fixing and mounting the light source is integrally connected inside the protective cover. The protective cover is provided with light-reflecting parts that are circumferentially and equidistantly distributed around the light source. The light-reflecting parts include multiple fish-scale arc plates, and the fish-scale arc plates are adjusted by raising and lowering and opening and closing according to the intensity of the light source to achieve beam focusing and dispersion.

[0006] Preferably, the two limiting plates are symmetrically fixedly connected to the left and right sides of the flat top, and the strong elastic limiting component is fitted onto the bolt column for elastic contact with the reinforcing tube.

[0007] Preferably, the lower end of the bolt post fitted inside the reinforcing tube has a limiting slot for a corresponding elastic pin.

[0008] Preferably, the hollow column is provided with a guide thread, the fixing part includes a T-shaped sealed elongated cavity opened in the reinforcing tube and the hollow column, and the load base and the hollow column are provided with a guide elongated hole for slidingly fitting an elastic pin. The hollow column is equipped with a spirally lifting wedge-shaped push cover through the guide thread. An elastic driving wedge piston is slidably fitted in the upper port of the T-shaped sealed elongated cavity and moves against the wedge-shaped push cover. A pressure-boosting boss piston is slidably fitted in the lower port of the T-shaped sealed elongated cavity. A steering lever is rotatably installed in the hollow column, which is moved and driven by the pressure-boosting boss piston to radially extend and retract the elastic pin.

[0009] Preferably, the load-bearing base has an opening that connects the annular groove and the hollow column, and the steering lever is rotatably installed in the opening.

[0010] Preferably, the T-shaped sealed elongated cavity is filled with a fluid medium located between the elastic drive wedge piston and the pressurizing boss piston.

[0011] Preferably, a first driven gear is keyed to the longitudinal rotating shaft, and a second driven gear is keyed to the transverse rotating shaft.

[0012] Preferably, the refractive part further includes a guide vertical hole opened in the side wall of the protective cover, and a lifting slider for pin-mounting the fish scale arc plate is slidably installed in the guide vertical hole.

[0013] Preferably, the lifting slider is connected by a pin to an automatic traction device for moving and pulling the fish-scale arc plate.

[0014] The above-mentioned method of using a stage spotlight structure includes the following steps: Step S1, quick hanging and double fixing: During installation, first anchor the bolt column of the ceiling base to the ceiling. The two limiting plates under the flat ceiling and the bolt column with the strong elastic limiting piece hang down together. Hold the double fixing bracket and make the longer diagonal of the load-bearing seat vertical. Align the two limiting plates and put them on upwards. Let the reinforcing tube fit over the bolt column. At the same time, the strong elastic limiting piece is compressed between the reinforcing tube and the flat ceiling. Then, rotate the load-bearing seat horizontally by 90°. After releasing the load-bearing seat, its long diamond-shaped side elastically contacts the limiting plate to form axial pre-tightening, completing the first layer of suspension fixing. Step S2, Radial Pin Locking: After the connection is completed, rotate the wedge-shaped push cover on the outer circumference of the hollow column so that it spirals upward along the guide thread. The wedge-shaped push cover's wedge-shaped pressure elastic drives the wedge block piston to move into the T-shaped sealing long cavity, squeezing the fluid medium pre-injected into the T-shaped sealing long cavity. The hydraulic pressure is instantly transmitted to the lower end, pushing the pressurizing boss piston to move axially, which in turn drives the steering lever in the through port to deflect. The other end of the steering lever drives the elastic pin to extend horizontally along the guide long hole, accurately engaging the limiting socket at the lower end of the bolt column, radially locking the double fixing bracket, and achieving the second rigid locking. Step S3: Drive the first driven gear to rotate, causing the longitudinal shaft to rotate inside the hollow column, so that the light source can achieve a 360° horizontal rotation with the hollow column as the fulcrum. Drive the second driven gear to rotate, causing the transverse shaft to swing, and the light source will then complete a 120° pitch angle adjustment. The two work together to achieve projection positioning without blind spots. Step S4, Beam Focusing and Dispersion Adaptive Control: After the light source is lit, the lamp holder on the protective cover provides stable power supply, pushing the lifting slider to rise and fall vertically within the guide vertical hole. At the same time, the automatic traction device is controlled to extend and retract, so that when the fish scale arc plate is outward, the light output angle increases, forming a scattered light spot; when the fish scale arc plate is inward, the reflected light converges into a high-intensity focused beam. Continuous adjustment realizes stepless change of beam focusing and dispersion, accurately adapting to different stage lighting needs.

[0015] Compared with the prior art, the present invention has the following advantages: 1. This invention utilizes the rhomboid structure design of the load-bearing seat. After being vertically fitted into the limiting plate, it rotates 90° horizontally to elastically abut against the limiting plate. Combined with the axial pre-tightening of the strong elastic limiting component, this achieves the first layer of rapid suspension fixation. Then, a wedge-shaped pusher drives the hydraulic system, pushing the elastic pin radially into the limiting slot of the bolt column, forming the second layer of rigid locking. This double fixation eliminates the need to tighten each bolt individually, resulting in high assembly and disassembly efficiency, vibration resistance, and anti-loosening properties, significantly improving the reliability for high-altitude use.

[0016] 2. This invention incorporates a longitudinal and a transverse rotating shaft within a hollow column, driven by a drive gear and a drive rack, respectively. This allows the light source to rotate 360° horizontally around the hollow column as a fulcrum, and also to adjust its pitch angle by 120°. This drive structure is integrated within the hollow column, featuring a compact layout, high transmission precision, and the ability to quickly position and lock the light source in any direction on the stage, fully meeting the projection angle requirements of complex lighting effects.

[0017] 3. This invention features circumferentially equidistantly distributed fish-scale arc plates on a protective cover. An automatic traction device, based on light source intensity or a preset signal, drives each arc plate to open and close synchronously via a lifting bracket, traction ring, and lifting slider. When the fish-scale arc plates open outwards, the light emission angle increases, forming a scattered light spot; when they close, the reflected light converges into a high-intensity beam, achieving stepless and continuous change in beam convergence and dispersion. This allows for precise matching of the lighting requirements of different programs without manual intervention, enhancing the real-time performance and richness of stage lighting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a stage spotlight structure proposed in this invention; Figure 2 This is a bottom view of a stage spotlight structure proposed in this invention; Figure 3 This is a front sectional view of a stage spotlight structure proposed in this invention; Figure 4 This is a side sectional view of a stage spotlight structure proposed in this invention; Figure 5 This is a schematic diagram of a ceiling base for a stage spotlight structure proposed in this invention; Figure 6 This is a bottom view of the ceiling base of a stage spotlight structure proposed in this invention; Figure 7 This is a schematic diagram of the light source, double fixing frame, and duplex lamp holder of a stage spotlight structure proposed in this invention. Figure 8 This is a front sectional view of a double-fixed frame for a stage spotlight structure proposed in this invention; Figure 9 This is a side sectional view of a double-fixed frame structure for a stage spotlight proposed in this invention; Figure 10 This is a front sectional view of a duplex lamp holder for a stage spotlight structure proposed in this invention; Figure 11 This is a side sectional view of a duplex lamp holder structure for a stage spotlight proposed in this invention.

[0019] In the picture: 1. Ceiling base; 11. Flat ceiling; 12. Limiting plate; 13. Bolt post; 14. Strong elastic limiting component; 15. Limiting socket; 2. Light source; 3. Double fixing bracket; 31. Load-bearing base; 32. Hollow column; 33. Annular groove; 34. Reinforcing tube; 35. Guide thread; 36. Fixing part; 361. T-shaped sealing elongated cavity; 362. Guide elongated hole; 363. Wedge-shaped push cover; 364. Elastic drive wedge piston; 365. Pressure boosting boss piston; 366. Steering lever; 367. Elastic pin; 37. Multi-dimensional adjustment unit; 371. Longitudinal rotating shaft; 372. Lateral rotating shaft; 373. Drive gear; 374. First driven gear; 375. Drive rack; 376. Second driven gear; 4. Duplex lamp holder; 41. Protective cover; 42. Lamp base holder; 43. Refractive section; 431. Lifting bracket; 432. Traction ring; 433. Guide vertical hole; 434. Lifting slider; 435. Fish scale arc plate; 436. Automatic traction device. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Reference Figures 1-11 A stage spotlight structure includes a ceiling base 1 and a light source 2. The ceiling base 1 serves as the suspension anchor point for the entire light fixture, and its structural design aims to provide extremely high pre-installation strength and anti-torsion capability. The ceiling base 1 consists of a flat top 11, two limiting plates 12, bolt columns 13, and strong elastic limiting members 14.

[0022] Reference Figure 5 and Figure 6 The ceiling has pre-drilled slots for mounting the flat top 11 and bolt posts 13. The bolt posts 13 are preferably expansion bolts. The flat top 11 is a rectangular metal plate with multiple locking through holes for installing bolts in the slots. The slots are rectangular grooves pre-drilled during the civil construction or decoration phase, with a depth equal to the thickness of the flat top 11, ensuring that the lower surface of the flat top 11 is flush with the ceiling finish after installation. After tightening, high-strength, non-shrink grout is injected into the slots. Once cured, the flat top 11 and the ceiling form an integral load-bearing structure.

[0023] Two limiting plates 12 are symmetrically fixedly connected to the left and right sides of the flat top 11. The two limiting plates 12 are not simple blocks. Their inner sidewalls are precision machined flat surfaces, forming a precise guide groove for cooperation with the load seat 31 of the double fixing frame 3. The fixing method is argon arc welding double-sided welding, and the weld leg height is not less than 0.7 times the thickness of the limiting plate 12.

[0024] A high-strength elastic limiting component 14 is fitted onto the bolt post 13. It consists of a high-strength spring and a collar that are fixedly connected. The high-strength spring is welded to the upper end of the flat top 11, and the collar is slidably fitted onto the bolt post 13. Under the elastic support of the high-strength spring, the collar elastically abuts against the reinforcing tube 34. After the flat top 11 is installed into the pre-reserved groove in the ceiling and grout is injected and cured, the high-strength spring is pre-compressed, constantly applying a downward axial thrust to the collar. When the reinforcing tube 34 is fitted in, the lower end face of the collar strongly abuts against the upper end face of the reinforcing tube 34, providing a continuous axial friction torque for the subsequent first locking.

[0025] It should be noted that the pre-compression of the high-strength spring should be 8-10mm after installation, controlled by adjusting the screw depth of bolt 13. When the reinforcing tube 34 is inserted, the lower end face of the collar will strongly press against the upper end face of the reinforcing tube 34, providing a continuous axial friction torque for the subsequent first locking. The lower end face of the collar is machined with annular serrations with a tooth depth of 0.3mm to increase the coefficient of friction with the upper end face of the reinforcing tube 34. This axial preload is calculated to be no less than 500N, which is sufficient to counteract the fretting displacement caused by typical stage vibrations.

[0026] The lower end of the bolt post 13, which is fitted inside the reinforcing tube 34, has a corresponding limiting slot 15 for the elastic pin 367. This slot is a cylindrical countersunk hole, and its diameter is in tolerance fit (H7 / g6) with the pin end of the elastic pin 367 to ensure that there is no radial play after the pin is locked in. The bolt post 13 is vertically inserted and welded into the center hole of the flat top 11, and its material is 304 stainless steel.

[0027] Reference Figure 3 and Figure 4 The lower end of the ceiling base 1 is equipped with a double fixing frame 3, which consists of a load-bearing seat 31 and a hollow column 32. The load-bearing seat 31 is a rhomboid structure corresponding to the two limiting plates 12. The design of the rhomboid structure of the load-bearing seat 31 is crucial. Its acute angle is set to 60°, its obtuse angle is 120°, and the diameter of the outer circle of the rhombus is equal to the distance between the inner walls of the two limiting plates 12. After the load-bearing seat 31 is vertically fitted into the ceiling base 1, it is horizontally deflected by 90° and then elastically abuts against the limiting plates 12. The load-bearing seat 31 has an annular groove 33, and a reinforcing tube 34 for clamping the bolt column 13 is fixedly connected at the center of the annular groove 33.

[0028] Holding the hollow column 32, align the acute angle of the load base 31 parallel to the limiting plate 12. At this point, the minor diameter of the rhombus is horizontal, allowing it to easily pass through the narrow opening between the limiting plates 12. Once the bottom surface of the load base 31 has passed the lower edge of the limiting plate 12, the operator applies force to twist the hollow column 32, causing the load base 31 to deflect horizontally by 90°. At this point, the major diameter of the rhombus switches to a horizontal position, and its two long sides form an interference fit with the inner wall of the limiting plate 12, resulting in elastic contact.

[0029] The diameter of the circumscribed circle of the rhombus is equal to the distance between the inner walls of the two limiting plates 12. The manufacturing tolerance is controlled within a negative deviation of 0.02-0.05mm, that is, the diameter of the circumscribed circle is slightly smaller than the distance between the limiting plates 12, ensuring a gap of about 0.05mm when initially fitted to prevent jamming. After deflection of 90°, the major diameter is greater than this distance by about 0.2-0.3mm, forming an interference fit. This interference fit is absorbed by the elastic deformation of the materials of the limiting plates 12 and the load seat 31, thereby generating an elastic resistance force.

[0030] The aforementioned process of twisting, turning, pressing, and locking completes the load-bearing connection without the use of any bolts or fasteners, achieving the first layer of suspension fixation. It should be emphasized that the so-called first layer refers to its ability to independently bear the static weight of the lamp and prevent accidental detachment, but it does not guarantee that it will not undergo slight rotation under vibration, thus requiring the cooperation of a second layer of locking.

[0031] The hollow column 32 is provided with a guide thread 35, the thread length of which covers the entire lifting stroke required by the wedge-shaped push cover 363. The trapezoidal thread is chosen because it has moderate transmission efficiency and self-locking performance, which can prevent the wedge-shaped push cover 363 from loosening on its own after locking.

[0032] Reference Figure 8 and Figure 9 The load-bearing base 31 is provided with a horizontal telescopic fixing part 36 for radially locking the bolt column 13 located in the reinforcing tube 34. The fixing part 36 includes a T-shaped sealed long cavity 361 opened in the reinforcing tube 34 and the hollow column 32. That is, a connected T-shaped sealed long cavity 361 is machined inside the wall thickness of the load-bearing base 31 and the hollow column 32.

[0033] The load-bearing base 31 and the hollow column 32 are provided with guide holes 362 for sliding sleeve elastic pins 367. The hollow column 32 is equipped with a spirally lifting wedge-shaped push cover 363 through the guide thread 35. The key power source is the wedge-shaped push cover 363 that is spirally sleeved on the outer circumference of the hollow column 32. The outer circumference of the wedge-shaped push cover 363 is machined with an internal thread that matches the guide thread 35, and the cone angle of its inner cone surface is 30°.

[0034] A flexible drive wedge piston 364 is slidably fitted into the upper port of the T-shaped sealed long cavity 361, which moves against the wedge-shaped push cover 363. The flexible drive wedge piston 364 consists of three parts: a wedge-shaped head, a piston rod, and a return spring. The outer conical surface of the wedge-shaped head also has a cone angle of 30°, which mates with the inner conical surface of the wedge-shaped push cover 363. A return spring is fitted on the piston rod. When no external force is applied, the spring pushes the piston outward, ensuring that the wedge-shaped head always abuts against the inner conical surface of the wedge-shaped push cover 363, eliminating idle stroke.

[0035] When the wedge-shaped push cover 363 is rotated upward along the guide thread 35, its inner conical surface compresses the wedge-shaped head of the elastic drive wedge piston 364, converting the rotational motion into the linear axial motion of the piston. Furthermore, a pressure-boosting piston 365 is slidably fitted in the lower port of the T-shaped sealed long cavity 361. This piston 365 is characterized by a boss structure at its lower end, the end face of which is used to contact the end face of the short arm of the steering lever 366. The boss is designed to concentrate the thrust force at the point of application of the lever, avoiding uneven loading.

[0036] A steering lever 366, which is rotatably mounted in the hollow column 32 and is driven by a pressurized boss piston 365 to radially extend and retract an elastic pin 367, is slidably mounted in the guide hole 362. The elastic pin 367, which is movably pulled by the steering lever 366 to extend into the reinforcing tube 34 and corresponds to the limiting socket 15, is slidably mounted in the guide hole 362. A release spring is fitted onto the elastic pin 367. After the hydraulic pressure is released, the spring automatically pulls the elastic pin 367 back, disengaging it from the limiting socket 15, thus unlocking it.

[0037] In some embodiments, since the pressure-bearing cross-sectional area S1 of the elastically driven wedge piston 364 is twice the cross-sectional area S2 of the pressure-boosting boss piston 365, according to Pascal's law, the pressure is equal everywhere in a closed fluid, i.e., P1 = P2. Therefore, the thrust acting on the pressure-boosting boss piston 365 is... F2 = F1 × (S2 / S1) The pressure-bearing cross-sectional area S1 of the elastic drive wedge piston 364 is smaller than the cross-sectional area S2 of the pressure-boosting boss piston 365 (S1:S2=1:2). According to Pascal's principle, the thrust transmitted to the pressure-boosting boss piston 365 is amplified by a factor of 2. That is, the pressure-bearing cross-sectional area S1 of the elastic drive wedge piston 364 is smaller, while the cross-sectional area S2 of the pressure-boosting boss piston 365 is larger.

[0038] The pressure-bearing cross-sectional area S1 of the elastic drive wedge piston 364 is smaller than the cross-sectional area S2 of the pressure-boosting boss piston 365, with a ratio of 1:2. The pressure transmitted by the hydraulic oil generates a thrust amplification of 2 times at the end of the pressure-boosting boss piston 365, which has an increased cross-sectional area. This amplified thrust drives the steering lever 366 to deflect around its pin. The ratio of the length of the power arm to the resistance arm of the steering lever 366 is 1:1.5, that is, the short arm connects to the pressure-boosting boss piston 365, and the long arm connects to the elastic pin 367. According to the lever principle, the output force is again linearly amplified by about 1.5 times. Finally, after two stages of force amplification due to the difference in hydraulic cross-sectional area and the difference in lever arm length, the operator only needs to apply a rotational torque of about 5 N·m on the wedge push cover 363 to generate a radial thrust of more than 2000 N at the end of the elastic pin 367, forcefully pushing it into the limiting socket 15, so that the reinforcing tube 34 and the bolt post 13 are fixed together.

[0039] The attitude of light source 2 requires precise control. The multi-dimensional adjustment unit 37 provides two rotational degrees of freedom for light source 2, and all driving components are embedded in the hollow column 32, achieving high integration. The multi-dimensional adjustment unit 37 is provided on the hollow column 32, which includes a longitudinal rotating shaft 371 rotatably mounted in the hollow column 32, and a transverse rotating shaft 372 rotatably mounted at the lower end of the longitudinal rotating shaft 371. The longitudinal rotating shaft 371 itself is a thick-walled hollow steel tube with hollow internal wiring, and its two ends are supported by pairs of angular contact ball bearings, ensuring that light source 2 can rotate smoothly and with low friction even when suspended.

[0040] A first driven gear 374 is keyed to the longitudinal rotating shaft 371. The first driven gear 374 is driven by a drive motor housed within the top of the hollow column 32, which in turn drives a drive gear 373 to rotate. The first driven gear 374 drives the longitudinal rotating shaft 371 to rotate within the spindle hole of the hollow column 32 via a keyed connection. A second driven gear 376 is keyed to the transverse rotating shaft 372. A drive gear 373, meshing with the first driven gear 374, is rotatably mounted within the hollow column 32. A drive rack 375, meshing with the second driven gear 376, is slidably mounted within the longitudinal rotating shaft 371. The drive rack 375 can be driven by a drive cylinder located on the longitudinal rotating shaft 371. The drive motor is either a stepper motor or a servo motor, and its speed is reduced and torque increased by a planetary reducer before being output to the drive gear 373. The first driven gear 374 drives the longitudinal rotating shaft 371 to rotate within the spindle hole of the hollow column 32 via a keyed connection, completing the 360° horizontal rotation of the light source 2.

[0041] The linear displacement of the drive rack 375 is precisely converted into the angular displacement oscillation of the transverse rotating shaft 372 through gear meshing. The gear module is selected as 1.5, and the backlash is compressed to within 0.02mm through the double-plate gear backlash elimination mechanism. This means that the transmission error from the issuance of the command to the change of the posture of the light source 2 is extremely small, and the repeatability of the beam projection position is extremely high, thus avoiding the drift phenomenon after adjustment by conventional friction hinges.

[0042] The light source 2 rotates 360° horizontally via the longitudinal axis 371 with the hollow column 32 as the fulcrum, and the light source 2 is tilted 120° via the transverse axis 372.

[0043] Reference Figure 3 , Figure 4 , Figure 10 and Figure 11A double lamp holder 4 is fixedly connected to the light source 2. The double lamp holder 4 is movably mounted on the lower end of the double fixing bracket 3 via a hollow column 32, and includes a protective cover 41 fixedly mounted on a transverse rotating shaft 372. The protective cover 41 is made of high-temperature resistant ceramic or phenolic resin and is fixed to the end flange of the transverse rotating shaft 372. A lamp holder 42 conforming to IEC standards is embedded in its center, providing reliable electrical contact for the light source 2. The lamp holder 42 for fixing and mounting the light source 2 is integrally connected inside the protective cover 41. The specifications of the lamp holder are adapted according to the power and lamp base type of the light source 2, commonly GX16 or G22 ceramic lamp holders. The center contact and side contact of the lamp holder 42 are led out by two high-temperature resistant silicone insulated wires, which are routed through the hollow column 32 to the terminal block, providing reliable electrical contact for the light source 2.

[0044] The protective cover 41 is provided with refracting parts 43 that are circumferentially equidistantly distributed around the light source 2. The refracting parts 43 include a lifting bracket 431 that is slidably installed inside the protective cover 41. The protective cover 41 is provided with a driving hydraulic cylinder for pulling the lifting bracket 431 vertically up and down. A traction ring 432 is fixedly connected to the lower end of the lifting bracket 431. Multiple guide vertical holes 433 are opened on the side wall of the protective cover 41. A lifting slider 434 with a traction ring 432 is slidably installed in the guide vertical holes 433. The lower end of the lifting slider 434 is pin-connected to fish scale arc plates 435 that are circumferentially equidistantly distributed around the light source 2. It should be noted that six or eight fish scale arc plates 435 are circumferentially equidistantly distributed around the light-emitting center of the light source 2. The inner surface of each fish scale arc plate 435 is vacuum-plated with aluminum and has high reflectivity.

[0045] In some embodiments, the fish-scale arc plate 435 is not directly hinged to the fixed bracket, but is linked through a set of concentric circumferential synchronous mechanisms. An automatic traction device 436 for moving and pulling the fish-scale arc plate 435 is connected to a pin on the lifting slider 434, and the fish-scale arc plate 435 adjusts its lifting and lowering position according to the intensity of the light source 2 to achieve beam focusing and dispersing. Both the driving hydraulic cylinder and the automatic traction device 436 generate linear extension and retraction movements based on the real-time power of the light source 2 or the DMX console signal, with PWM speed regulation and position closed-loop control performed by a drive board controlled by a built-in microprocessor.

[0046] When the fish-scale arc plate 435 opens, the emitted beam angle increases to a diffused state; when the fish-scale arc plate 435 closes, the light is highly focused, forming a strong beam of light. The inner surface of each fish-scale arc plate 435 is vacuum-plated with aluminum, with a reflectivity of not less than 92%, and the plating surface is covered with a silicon dioxide protective film to prevent high-temperature oxidation.

[0047] When the fish-scale arc plate 435 opens, the emitted beam angle increases to a diffused state; when the fish-scale arc plate 435 closes, the reflected light converges into a high-intensity focused beam, forming a strong chasing beam.

[0048] The entire process described above is stepless and smooth, with the optical focus remaining constant at the light-emitting center of light source 2, thus avoiding image plane drift problems found in other zoom methods.

[0049] The drive hydraulic cylinder provides the main lifting power to the lifting bracket 431 and traction ring 432, while the automatic traction device 436 is a miniature linear actuator on each lifting slider 434. Its function is to independently fine-tune and compensate for the pitch angle of each fish-scale arc plate 435 to correct the inconsistency in the angle of each blade caused by manufacturing and assembly errors, and to ensure the symmetry and uniformity of the light spot. The fish-scale arc plate 435 adjusts its lifting and opening according to the intensity of the light source 2 to achieve beam focusing and dispersion.

[0050] The load-bearing base 31 has an opening that connects the annular groove 33 and the hollow column 32. This opening is a core hole reserved during casting. The steering lever 366 is rotatably installed in the opening through a pin that has been surface carburized and quenched.

[0051] The T-shaped sealed elongated cavity 361 is filled with a fluid medium located between the elastic drive wedge piston 364 and the pressure boosting boss piston 365. This fluid medium is incompressible and preferably aviation hydraulic oil. Its kinematic viscosity at 40°C is 10 mmHg. 2 / s, with a pour point below -60℃, ensuring good fluidity and transfer efficiency even under extreme temperatures that stage lighting equipment may encounter. Each piston component is sealed using a combination of O-rings and PTFE retaining rings, with a pressure rating of no less than 10MPa, ensuring zero leakage during long-term use.

[0052] To verify the superiority of the technology used in this embodiment, a comparative test was conducted with mainstream stage spotlights in the prior art. The test was carried out under the same environmental conditions, focusing on three dimensions: installation efficiency, vibration-resistant locking reliability, and beam control response. The test data is summarized in Table 1 below.

[0053] Table 1. Test results of installation efficiency, vibration-resistant locking reliability, and beam control response for different stage lights. It can be known that: The combination of the strong elastic limiter 14 and the rhomboid load base 31 simplifies the installation to a single rotational action; the hydraulic lever amplification system of the fixing part 36 strengthens the locking by a rigid pin connection; the gear transmission chain of the multi-dimensional adjustment part 37 improves the positioning accuracy to the servo level; and the circumferential synchronization mechanism of the refractive part 43 expands the beam shaping capability to real-time follow-up.

[0054] It should be noted that the specific model and specifications of the light source 2 and the automatic traction device 436 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0055] The functional principle of this invention can be explained through the following operational methods: Quick connection and double fixation: During installation, first anchor the bolt column 13 of the ceiling base 1 to the ceiling. The two limiting plates 12 under the flat top 11 and the bolt column with the strong elastic limiting piece 14 hang down together. Hold the double fixing bracket 3 and make the longer diagonal of the load base 31 vertical. Align it with the gap between the two limiting plates 12 and put it upwards. Let the reinforcing tube 34 fit over the bolt column 13.

[0056] The strong elastic limiting member 14 is compressed between the reinforcing tube 34 and the flat top 11. Then the load seat 31 is horizontally deflected by 90°. After the load seat 31 is released, its long rhomboid side elastically contacts the limiting plate 12, forming axial pre-tightening, and completing the first suspension fixation.

[0057] Radial pin locking: After the connection is completed, the wedge-shaped push cover 363 on the outer periphery of the hollow column 32 is spirally raised along the guide thread 35. The wedge-shaped push cover 363 compresses the elastic drive wedge piston 364 to move into the T-shaped sealing long cavity 361, squeezing the fluid medium pre-injected into the T-shaped sealing long cavity 361. The hydraulic pressure is instantly transmitted to the lower end, pushing the pressurizing boss piston 365 to move axially, which in turn drives the steering lever 366 in the through port to deflect. The other end of the steering lever 366 drives the elastic pin 367 to extend horizontally along the guide long hole 362 and accurately engage with the limiting socket 15 at the lower end of the bolt column 13. The elastic pin 367 is used to lock the bolt column 13 in the reinforcing tube 34, realizing the second rigid locking.

[0058] The drive gear 373 drives the first driven gear 374 to rotate, which in turn drives the longitudinal shaft 371 to rotate, allowing the light source 2 to achieve a 360° horizontal rotation with the hollow column 32 as the fulcrum. The drive rack 375 drives the second driven gear 376 to rotate, which in turn drives the transverse shaft 372 to swing, allowing the light source 2 to complete a 120° pitch angle adjustment. The two work together to achieve projection positioning without blind spots.

[0059] Beam distribution adaptive control: After the light source 2 is lit, the lamp holder 42 on the protective cover 41 provides a stable power supply, driving the hydraulic cylinder to drive the lifting bracket 431 to rise and fall according to the control signal, driving the traction ring 432 and the lifting slider 434 to move up and down. At the same time, the automatic traction device 436 performs extension and retraction fine adjustment. The traction ring 432 drives the lifting slider 434 to rise and fall vertically in the guide vertical hole 433. At the same time, the automatic traction device 436 is controlled to perform extension and retraction adjustment, that is, the hydraulic cylinder drives the lifting bracket 431 to vertically raise and lower the fish scale arc plate 435. The automatic traction device 436 finely adjusts the pitch angle of the fish scale arc plate 435, so that when the fish scale arc plate 435 is outward, the light emission angle increases, forming a scattered light spot; when the fish scale arc plate 435 is inward, the reflected light is focused into a high-intensity focused beam. Continuous adjustment realizes stepless change of beam focusing and dispersion, accurately adapting to different stage lighting needs.

[0060] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A stage spotlight structure, comprising a ceiling base (1) and a light source (2), wherein the ceiling base (1) comprises a flat top (11), two limiting plates (12) and bolt posts (13), characterized in that: The lower end of the ceiling base (1) is provided with a double fixing frame (3), which consists of a load-bearing seat (31) and a hollow column (32). composition: The load-bearing base (31) has a rhomboid structure. After being vertically fitted into the ceiling base (1), it is horizontally deflected by 90° and then elastically contacts the limiting plate (12). The load-bearing base (31) has an annular groove (33) and a reinforcing tube (34) for clamping the bolt post (13) is welded in the annular groove (33). The load-bearing base (31) is provided with a fixing part (36) for radially locking the bolt post (13) located in the reinforcing tube (34). The fixing part (36) includes an elastic pin (367) that is slidably installed in the load-bearing base (31). The hollow column (32) is provided with a multi-dimensional adjustment part (37) for adjusting the light source (2) by 360° horizontal rotation and 120° tilt angle. A double lamp holder (4) is fixedly connected to the light source (2). The double lamp holder (4) is installed at the lower end of the double fixing frame (3). It includes a protective cover (41) fixedly installed on the horizontal rotating shaft (372). A lamp head holder (42) for mounting the light source (2) is connected inside the protective cover (41). A refractive part (43) is provided on the protective cover (41). The refractive part (43) includes multiple fish scale arc plates (435) equidistantly distributed around the light source (2). The fish scale arc plates (435) adjust the beam divergence by lifting and closing.

2. The stage spotlight structure according to claim 1, characterized in that, The two limiting plates (12) are symmetrically fixedly connected to the left and right sides of the flat top (11) and the bolt column (13) is fitted with a strong elastic limiting member (14) fixedly connected to the flat top (11) for elastic contact with the reinforcing tube (34).

3. The stage spotlight structure according to claim 2, characterized in that, The lower end of the bolt post (13) fitted inside the reinforcing tube (34) has a limiting socket (15) for a corresponding elastic pin (367).

4. A stage spotlight structure according to claim 3, characterized in that, The hollow column (32) is provided with a guide thread (35). The fixing part (36) includes a T-shaped sealed long cavity (361) opened in the reinforcing tube (34) and the hollow column (32). The load seat (31) and the hollow column (32) are provided with a guide long hole (362) for slidingly fitted elastic pin (367). The hollow column (32) is equipped with a spirally lifting wedge push cover (363) through the guide thread (35). The upper port of the T-shaped sealed long cavity (361) is slidably fitted with an elastic drive wedge piston (364) that moves against the wedge push cover (363). The lower port of the T-shaped sealed long cavity (361) is slidably fitted with a pressure boosting boss piston (365). The hollow column (32) is rotatably installed with a steering lever (366) that is moved and driven by the pressure boosting boss piston (365) to radially extend and retract the elastic pin (367).

5. A stage spotlight structure according to claim 4, characterized in that, The load-bearing seat (31) has an opening that connects the annular groove (33) and the hollow column (32), and the steering lever (366) is rotatably installed in the opening.

6. A stage spotlight structure according to claim 5, characterized in that, The T-shaped sealed long cavity (361) is filled with a fluid medium located between the elastic drive wedge piston (364) and the pressurizing boss piston (365).

7. A stage spotlight structure according to claim 6, characterized in that, The multidimensional adjustment unit (37) includes a longitudinal rotating shaft (371) rotatably mounted in a hollow column (32), a transverse rotating shaft (372) rotatably mounted at the lower end of the longitudinal rotating shaft (371), a first driven gear (374) keyed to the longitudinal rotating shaft (371), and a second driven gear (376) keyed to the transverse rotating shaft (372).

8. A stage spotlight structure according to claim 7, characterized in that, The refractive part (43) also includes a guide vertical hole (433) opened in the side wall of the protective cover (41), and a lifting slider (434) for pin-mounting the fish scale arc plate (435) is slidably installed in the guide vertical hole (433).

9. A stage spotlight structure according to claim 8, characterized in that, The lifting slider (434) is connected by a pin to an automatic traction device (436) for moving and traction of the fish scale arc plate (435).

10. A stage spotlight structure according to claim 9, characterized in that, The method of use includes the following steps: Step S1, quick hanging and double fixing: During installation, first anchor the bolt column (13) of the ceiling base (1) to the ceiling. The two limiting plates (12) under the flat ceiling (11) and the bolt column with the strong elastic limiting piece (14) hang down together. Hold the double fixing bracket (3) and make the longer diagonal of the load seat (31) vertical. Align it with the gap between the two limiting plates (12) and put it on upward. Let the reinforcing tube (34) fit over the bolt column (13). At the same time, the strong elastic limiting piece (14) is compressed between the reinforcing tube (34) and the flat ceiling (11). Then, rotate the load seat horizontally by 90°. After releasing the load seat (31), its long diamond-shaped side elastically contacts the limiting plate (12) to form axial pre-tightening and complete the first suspension fixing. Step S2, radial pin locking: After the connection is completed, rotate the wedge-shaped push cover (363) on the outer periphery of the hollow column (32) so that it spirals up along the guide thread (35). The wedge-shaped push cover (363) presses the elastic drive wedge piston (364) to move into the T-shaped sealing long cavity (361), squeezing the fluid medium pre-injected in the T-shaped sealing long cavity (361). The hydraulic pressure is instantly transmitted to the lower end, pushing the pressurizing boss piston (365) to move axially, thereby driving the steering lever (366) in the port to deflect. The other end of the steering lever (366) drives the elastic pin (367) to extend horizontally along the guide long hole (362) and accurately engage the limiting socket (15) at the lower end of the bolt column (13), radially locking the double fixing bracket (3) to achieve the second rigid locking. Step S3: Drive the first driven gear (374) to rotate, causing the longitudinal shaft (371) to rotate inside the hollow column (32), so that the light source (2) can achieve a 360° horizontal rotation with the hollow column (32) as the fulcrum. Drive the second driven gear (376) to rotate, causing the transverse shaft (372) to swing, and the light source (2) will then complete a 120° pitch angle adjustment. The two work together to achieve a projection positioning without blind spots. Step S4, adaptive control of beam focusing and dispersing: After the light source (2) is lit, the lamp holder (42) on the protective cover (41) provides stable power supply, and drives the hydraulic cylinder to drive the lifting bracket (431) to rise and fall according to the brightness of the light source or the preset signal, which drives the traction ring (432) and the lifting slider (434) to move vertically along the guide vertical hole (433). At the same time, the automatic traction device (436) performs extension and retraction fine adjustment, so that when the fish scale arc plate (435) is extended, the light output angle increases to form a scattered light spot, and when it is retracted, the reflected light converges into a high-intensity focused light beam, realizing the stepless continuous change of beam focusing and dispersing.

Images