Temperature detection device and temperature detection method for stage lamp

Abstract

The present invention discloses a temperature detection device and method for stage lights. The device performs temperature tests on key locations of a light bulb, simulating the heat dissipation environment and conditions encountered by a gas discharge lamp in actual use, so that the temperature detection results can better reflect the actual heat dissipation performance of the product. The present invention covers multiple key temperature measurement points of the light bulb and various different operating states of the lamp, simulating the operating conditions that may occur during actual use of the lamp to the greatest extent possible, establishing a comprehensive temperature detection mechanism for the gas discharge lamp, and providing a reliable temperature detection device for this temperature detection mechanism. The temperature detection device has high operating accuracy and a high degree of integration, and can effectively improve the yield rate of gas discharge lamp stage lights, prevent the gas discharge lamp from malfunctioning or being damaged during use, and extend the product life of the stage light.

Description

Technical Field

[0001] The present invention relates to the field of stage lighting, and in particular to a temperature detection device and a temperature detection method for stage lighting. Background Art

[0002] As the industry places greater demands on energy conservation and efficiency in stage lighting equipment, high-efficiency, high-intensity gas discharge (HIDI) bulbs are increasingly being used as light sources. These bulbs are widely favored for their high luminous intensity, strong visual impact, excellent rendering effects, and low purchase cost. Companies like Philips, Osram, and USHIO have developed projector-like light sources with small spot sizes and high light efficiency, and they are now widely used in the stage lighting industry.

[0003] However, gas discharge lamps utilize an integrated design of the bulb and reflector, resulting in relatively concentrated heat during operation. Temperatures at key locations within the bulb must be controlled within a certain range. For example, an OSRAM 440W bulb requires a surface temperature of 800°C to 860°C during normal operation, with the molybdenum sheets and filament at the front and rear ends required to be below 350°C. Excessively high temperatures at the center of the bulb can lead to excessive aging and whitening of the bulb, or melting of the glass. Excessively low temperatures can cause the bulb to darken and become ineffective, or reduce its luminous efficacy. Uneven heating and large temperature differences can cause the bulb to crack. Excessively high temperatures in the filament and molybdenum sheets at the front and rear ends can cause thermal erosion, burnout, or melting, among other problems.

[0004] Currently, stage lighting manufacturers perform temperature tests on their bulbs, but these tests are often limited, and the testing methods and mechanisms are incomplete. This can still lead to potential risks such as overheating, underheating, and uneven heat dissipation. This is especially true after installing a bulb that has been tested and meets heat dissipation requirements. The internal structure of the fixture can affect heat dissipation, altering the heat dissipation environment. This can easily lead to a bulb that passed the test still failing to meet heat dissipation requirements after actual production and assembly. Furthermore, the miniaturization and integration of stage lighting also pose significant heat dissipation challenges. In addition to the currently tested factors such as the transmittance and reflection of common filters like color filters, CMY filters, and glass patterns, the shade setting, fan speed, and air guide structure, many other factors can affect bulb temperature in stage lighting fixtures. For example, changes in fixture mounting, such as whether the fixture is upright or inverted, the position of the cooling inlet and outlet fans, and the rotation angle of the fixture, can all affect bulb temperature. These conditions often occur in stage lighting applications.

[0005] Without a sound testing mechanism and method, it is difficult to achieve comprehensive protection for bulbs, which can easily lead to bulb failure or damage, shortening the lifespan of the bulb and the lamp. Currently, there is a lack of such comprehensive testing for stage lighting fixtures that use high-intensity discharge lamps as light sources. Summary of the Invention

[0006] To overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide a temperature detection device for stage lighting fixtures, and a second purpose is to provide a detection method for stage lighting fixtures, which can solve the problem that the existing stage lighting fixture temperature test is single and difficult to fully protect the bulbs and lamps.

[0007] The present invention is achieved through the following technical solutions:

[0008] A temperature detection device for a stage lamp, wherein the light source of the stage lamp is a gas discharge lamp to be detected, and the temperature detection device for the stage lamp comprises: a bulb center detection mechanism, including: an infrared thermometer and a position adjustment mechanism; a circular cutout is formed on the side of a lamp cup of the gas discharge lamp to be detected, and a calcium fluoride glass sheet is provided on the outer surface of the circular cutout, the center of the calcium fluoride glass sheet is aligned with the center of the bulb, and the outer diameter of the circular cutout is larger than the diameter of the bulb center, so that the bulb can be detected from the outside through the calcium fluoride glass sheet; a focusing lens of the infrared thermometer is aligned with the center of the calcium fluoride glass sheet and the center of the bulb, so that infrared rays can pass through the calcium fluoride glass sheet and directly illuminate the bulb; the position adjustment mechanism is used to adjust the infrared thermometer Position, including: a linear slide, a lifting assembly and a universal shaft bracket; both ends of the universal shaft bracket are provided with a universal head, and are respectively connected to the infrared thermometer and the lifting assembly; the lifting assembly is fixed on the slider of the linear slide, and the linear slide is arranged horizontally; a multi-temperature measurement point detection mechanism, including: a thermocouple thermometer; the thermocouple thermometer is respectively connected to the filament, the front molybdenum sheet and the rear molybdenum sheet in the gas discharge lamp through a thermocouple temperature sensing line; a test platform, the bulb center detection mechanism and the multi-temperature measurement point detection mechanism are both fixedly arranged on the test platform; a hanging bracket, used to hang an inverted stage light; the stage light is fixedly installed upright on the test platform, or the stage light is hung inverted on the hanging bracket.

[0009] Furthermore, the position adjustment mechanism also includes an axial fine-tuning platform for fine-tuning the position of the infrared thermometer; the axial fine-tuning platform includes a three-axis slide and an upper and lower differential head, a left and right differential head, and a front and rear differential head respectively used to control the fine-tuning of the position of the three-axis slide in the three-axis directions; the bottom of the axial fine-tuning platform is fixed to the top of the lifting assembly, and the universal head at one end of the universal shaft bracket is connected to the top of the axial fine-tuning platform.

[0010] Furthermore, the axial position fine-tuning platform also includes a fine-tuning platform base and a universal bracket mounting platform, which are respectively fixed to the bottom and top of the three-axis slide.

[0011] Furthermore, the lifting assembly includes: an outer rod, an inner rod, a lifting platform and a lifting locking knob; the outer rod is fixedly arranged, and the inner rod is movably sleeved inside the outer rod; the bottom of the lifting platform is fixedly connected to the top of the inner rod, and the top of the lifting platform is fixedly connected to the fine-tuning platform base; the lifting locking knob is arranged on the outside of the inner rod for locking the position of the inner rod.

[0012] Furthermore, the universal rotating shaft bracket includes: a first support rod and a second support rod hinged to each other, a tightening nut for fixing the angle between the two support members, a fine-tuning rod and a thermometer fixing bracket; one end of the first support rod is connected to the universal bracket mounting platform of the axial fine-tuning platform through a universal head, one end of the second support rod is connected to the fine-tuning rod through a universal head, both ends of the fine-tuning rod are respectively connected to the second support rod and the thermometer fixing bracket through a universal head, and the infrared thermometer is fixedly connected to the thermometer fixing bracket.

[0013] Furthermore, the position adjustment mechanism further includes: a slider locking knob; the slider locking knob is provided on the slider of the linear slide rail and is placed above the test platform.

[0014] Furthermore, the thermocouple thermometer is provided with three K-type thermocouple temperature sensing wires; one end of the three K-type thermocouple temperature sensing wires is respectively connected to the filament, the front end molybdenum sheet and the rear end molybdenum sheet in the gas discharge lamp, and the other end is connected to the thermocouple thermometer through a standard plug.

[0015] Further, it is characterized in that the number of the bulb center detection mechanism is single, or the number of the bulb center detection mechanism is two, circular cutouts are provided on two opposite sides of the lamp cup of the gas discharge lamp, and the outer surfaces of the circular cutouts on both sides are provided with calcium fluoride glass pieces facing the bulb center; the two bulb center detection mechanisms are respectively arranged on both sides of the gas discharge lamp so that the focusing lenses of the infrared thermometers on both sides are simultaneously facing the bulb center.

[0016] A temperature detection method for a stage lamp, applied to the temperature detection device for a stage lamp, comprises: a lamp installation step: according to the required test state, the lamp is selectively installed upright on a test platform or hung upside down on a hanging bracket; a lamp starting step: a temperature measuring bulb is installed in a light source module of the lamp, the lamp is connected to a power supply with a power detection module, the power supply of the horizontal and vertical rotating motors in the lamp is disconnected, the lamp is powered on for self-test, the temperature measuring bulb is lit through the test software on the lamp display panel, the lamp is controlled to operate normally, and the light beam projected by the lamp is controlled to be concentric with the central optical axis of the lamp; a lamp head posture adjustment step: according to the required test state, the horizontal and vertical rotating motors in the lamp are started, and the lamp head is rotated to the test angle required for the test Degrees; the test angles are as follows: the lamp head rotates to 0°, 45°, 90°, 135°, 180°, 225°, and 270°, of which 270° is the maximum rotation position; the lamp working mode switching steps: according to the required test results, the internal working mode of the lamp is selected by controlling the various driving mechanisms in the lamp; the working modes include: shading mode, white light mode, CMYK color patch cut-in mode, color patch cut-in mode, and color patch and CMYK color patch superposition cut-in mode; the bulb center detection steps: turn on the power of the horizontal and vertical rotating motors in the lamp, control the lamp head to rotate to the test angle, and then adjust the focus lens of the infrared thermometer to the position facing the bulb center through the position adjustment mechanism, while maintaining the test distance, turn on the infrared thermometer, and turn on the infrared thermometer. The power supply of the thermometer is used, and the temperature of the bulb center is detected and recorded when the lamp is in a thermally stable state; multiple temperature measurement point detection steps: the standard plugs of the thermocouple temperature sensing lines connected to the filament, front molybdenum sheet and rear molybdenum sheet of the bulb are respectively inserted into the corresponding sockets of the thermocouple thermometer, and the temperature of the filament, front molybdenum sheet and rear molybdenum sheet of the bulb are respectively detected, and the temperature data of the lamp in the stable state is selected as the effective temperature measurement data and recorded; according to each different working state of the lamp, the above-mentioned lamp installation steps, lamp head posture adjustment steps, and lamp working mode switching steps are repeated to adjust the lamp to different working states; then the above-mentioned bulb center detection steps and multiple temperature measurement point detection steps are repeated to perform temperature detection on the lamp bulb temperature under different working states Measurement; fan data importing step: in the above-mentioned bulb center detection step and the multiple temperature measurement point detection step, adjust the control voltage and speed of the heat dissipation fan in the lamp to make the temperature of each temperature measurement position of the lamp meet the requirements, and then import the fan control voltage and speed of the lamp in various use states into the lamp bulb control software; aging test step: remove the temperature measuring bulb and install the standard bulb into the lamp light source module; check and confirm whether the fan control voltage and speed are consistent with the imported test data; perform aging tests on the lamp under various test conditions for more than 8 hours, and after the aging test under each test condition, check whether the bulb ball appears black or white, and whether the molybdenum sheet and filament of the lamp are excessively oxidized, reduced or blackened, and other undesirable phenomena;After the lamp has completed all aging tests and the bulb is judged to be normal, it is determined that the heat dissipation of the lamp light source meets the standards and the product can be put into production.

[0017] Furthermore, between the lamp head posture adjustment step and the bulb center detection step, a lamp posture judgment step is also included: through the gravity sensing chip set inside the lamp head, it is judged whether the lamp is installed upright or inverted; through the vertical motor control software in the lamp head, the rotation angle of the lamp head is judged. If the rotation angle of the lamp head is not at 0°, 45°, 90°, 135°, 180°, 225°, or 270°, the fan speed is appropriately adjusted according to the proximity principle or the segmented change curve.

[0018] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0019] (1) First, the present invention can simultaneously detect the temperature of each key position of the gas discharge lamp: by making a circular incision on the side of the lamp cup, a calcium fluoride glass sheet suitable for infrared optical testing is installed in the incision. The calcium fluoride glass sheet is light-transmissive and heat-resistant above 1300°C, which has little effect on the accuracy of the infrared thermometer's testing of the bulb's center. (2) The position of the infrared thermometer can be adjusted by the position adjustment mechanism so that it can be accurately aligned with the bulb's center. The horizontal position is adjusted by the linear slide, the height of the infrared thermometer is adjusted by the lifting assembly, and the inclination of the infrared thermometer is adjusted by the universal shaft bracket, ensuring that the focusing lens of the infrared thermometer can be directly aligned with the center of the calcium fluoride glass sheet and the center of the bulb, so as to perform infrared temperature detection on the bulb's center. (3) The thermocouple thermometer is connected to the filament, the front molybdenum sheet, and the rear molybdenum sheet in the bulb through multiple thermocouple temperature sensing wires, and performs temperature detection on these key positions at the same time, ensuring the comprehensiveness of the bulb's detection parts. (4) It is also equipped with a test platform and a hanging bracket to provide installation support for the upright installation posture and inverted hanging posture of the lamp, so that the temperature of the lamp in the upright posture and inverted posture can be detected respectively, covering the different installation postures that the lamp may appear in actual use scenarios. (5) The lamp head is tested at various different rotation angles, covering the various different rotation angles commonly used in actual use scenarios. (6) Under the premise of simultaneous temperature detection of each key position of the bulb, the lamp is switched to different working modes by controlling the various motion drive mechanisms inside the lamp. The temperature of the lamp in different working states can be detected and recorded separately, covering the various different working modes that the lamp may appear in actual use.

[0020] Compared to previous single temperature tests on the bulb alone, the present invention first installs the bulb inside the lamp and then tests the key positions of the bulb after the entire stage light is assembled. This simulates the heat dissipation environment and heat dissipation conditions faced by the gas discharge lamp in actual use, so that the temperature detection results can better reflect the actual heat dissipation performance of the product. The present invention covers multiple key temperature measurement points of the bulb and covers various different working states of the lamp. It simulates the working conditions that may occur in the actual use of the lamp to the greatest extent, establishes a comprehensive temperature detection mechanism for the gas discharge lamp, and provides a reliable temperature detection device for this temperature detection mechanism. The temperature detection device has high working accuracy and high degree of integration, which can effectively improve the yield rate of gas discharge bulb stage lamps, prevent gas discharge bulbs from malfunctioning or being damaged during use, and extend the product life of the stage light. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a schematic diagram of the internal structure of a gas discharge lamp;

[0022] Figure 2 Shown is a top view of a gas discharge lamp temperature measuring bulb;

[0023] Figure 3 The figure shows the connection diagram of the temperature measuring bulb and the K-type thermocouple thermal wire;

[0024] Figure 4 The figure shows the temperature measurement status when the lamp is installed upright;

[0025] Figure 5 Shown Figure 4 Side view of;

[0026] Figure 6 The figure shows the state diagram of the lamp being installed upside down;

[0027] Figure 7 Shown Figure 6 Side view of;

[0028] Figure 8 The figure shows the relative positions of the infrared thermometer and the light bulb;

[0029] Figure 9 The figure shows the connection diagram of the thermocouple thermometer and the light bulb;

[0030] Figure 10 The figure shows the overall assembly drawing of the position adjustment mechanism;

[0031] Figure 11 The figure shows the assembly drawing of the axis fine-tuning platform and the universal shaft bracket;

[0032] Figure 12Shown is a schematic diagram of the internal optical components of a stage lighting fixture;

[0033] Figure 13 Shown is a schematic diagram of the internal shading sheet of a stage lighting fixture;

[0034] Figure 14 The figure shows a schematic diagram of a stage lighting fixture with a test angle of 0° upright;

[0035] Figure 15 The figure shows a schematic diagram of a stage lighting test with an upright 45° angle;

[0036] Figure 16 The figure shows a schematic diagram of a stage lighting fixture with a test angle of 90° upright;

[0037] Figure 17 The figure shows a schematic diagram of a stage lighting fixture with a test angle of 135° upright;

[0038] Figure 18 The figure shows a schematic diagram of a stage lighting fixture with a test angle of 180° upright;

[0039] Figure 19 The figure shows a schematic diagram of a stage lighting fixture with a test angle of 225° upright;

[0040] Figure 20 The figure shows a schematic diagram of a stage lighting fixture with a test angle of 270° upright;

[0041] Figure 21 Shown is a schematic diagram of the process steps of the temperature detection method;

[0042] Figure 22 Shown is the temperature test data table for upright installation of the lamp;.

[0043] Figure 23 Shown is a temperature test data sheet for an inverted lamp installation.

[0044] In the figure: 10, gas discharge lamp; 11, bulb; 12, lamp cup; 13, circular cutout; 14, calcium fluoride glass sheet; 15, filament; 16, front molybdenum sheet; 17, rear molybdenum sheet; 20, infrared thermometer; 21, focusing lens; 30, position adjustment mechanism; 31, linear guide rail; 311, slider locking knob; 32, lifting assembly; 321, outer rod; 322, inner rod; 323, lifting platform; 324, lifting locking knob; 33, axis fine-tuning platform; 331, three-axis slide; 332, upper and lower differential head; 333, left and right differential head; 334, front and back differential head; 335, fine-tuning platform base; 33 6. Universal bracket mounting platform; 34. Universal shaft bracket; 341. First support rod; 342. Second support rod; 343. Tightening nut; 344. Fine-tuning rod; 345. Thermometer fixing bracket; 346. Universal head; 40. Thermocouple thermometer; 41. K-type thermocouple temperature sensing wire; 42. Standard plug; 50. Test platform; 60. Hanging bracket; 70. Stage lighting; 71. Cooling fan; 711. Lamp cooling centrifugal fan; 712. Light source chamber inlet fan; 713. Light source chamber outlet fan; 72. CMYK color wheel module; 73. Color wheel module; 74. Glass pattern wheel module; 75. Shading sheet. DETAILED DESCRIPTION

[0045] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0046] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0048] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and may encompass internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0049] The present invention discloses a temperature detection device for a stage light, which is mainly used to detect the temperature value of a gas discharge lamp 10 serving as a light source of the stage light to determine whether the gas discharge lamp meets heat dissipation requirements.

[0050] In order to facilitate understanding of the present technical solution, the structure of the gas discharge lamp 10 is first described. Figure 1-Figure 3 The gas discharge lamp 10 has an integrated bulb 11 and lamp cup 12. The bulb 11 has a protruding bulb in the middle, and inside it are a filament 15, a front molybdenum plate 16, and a rear molybdenum plate 17. During operation, the gas discharge lamp 10 must maintain a certain temperature range for the bulb's surface, the filament 15, the front molybdenum plate 16, and the rear molybdenum plate 17. Otherwise, the bulb 11 may malfunction or even be damaged. Generally speaking, during operation of a gas discharge lamp 10, the center temperature of the bulb 11 must be controlled within a range of 780-950°C. Excessively high center temperatures can lead to excessive aging and whitening of the bulb 11 or melting of the glass at the center. Excessively low center temperatures can cause the bulb 11's luminous element to darken, resulting in failure or reduced luminous efficiency. Uneven heating and large temperature differences within the bulb 11 can cause the bulb 11 to crack. The temperatures of the filament 15, front molybdenum sheet 16, and rear molybdenum sheet 17 must be below 350°C. Excessively high temperatures can cause thermal corrosion, burning, or melting. The present invention implements temperature monitoring for these key locations within the bulb 11.

[0051] The present invention will first use a temperature measuring bulb as the component to be tested, see Figure 1-Figure 3 The temperature measuring bulb is made by processing and modifying a standard light bulb. In order to allow the bulb 11 to be detected by an external infrared thermometer 20 through the lamp cup 12, in this embodiment, a circular cutout 13 is opened on each side of the lamp cup 12 of the temperature measuring bulb (or only one on one side), and a calcium fluoride glass sheet 14 is pasted on the outer surface of the circular cutout 13. The center of the calcium fluoride glass sheet 14 is aligned with the center of the bulb 11, and the outer diameter of the circular cutout 13 is larger than the center diameter of the bulb 11, so that the light emitted by the bulb 11 can pass through the calcium fluoride glass sheet 14 and be captured by the focusing lens 21 of the infrared thermometer 20. Figure 8Calcium fluoride glass sheet 14 is an infrared optical material that is light-transmissive and temperature-resistant above 1300°C, making it suitable for use in infrared temperature measurement scenarios. At the same time, K-type thermocouple temperature sensing wires 41 are installed at the highest temperature positions of the temperature measuring bulb filament 15, front molybdenum sheet 16, and rear molybdenum sheet 17. These probes are used in conjunction with the thermocouple thermometer to detect whether the temperatures at these key locations, which affect the stability and life of the bulb 11, meet the temperature range requirements.

[0052] See Figure 4-Figure 5 The stage light temperature detection device disclosed in the present invention includes the following parts:

[0053] The bulb center detection mechanism is used to detect the temperature of the bulb 11, which includes: Figure 4-Figure 5 , an infrared thermometer 20 and a position adjustment mechanism 30 for adjusting the position of the infrared thermometer 20. The infrared thermometer 20 is an existing instrument suitable for measuring the temperature of non-contact measuring glass and quartz glass surfaces in the temperature range of 250 to 2500°C. The instrument has a short response time and a small spot size, and is suitable for fast measurement tasks and for measuring small measurement objects.

[0054] Position adjustment mechanism 30, see Figure 3-Figure 4 , including: a linear slide 31, a lifting assembly 32, an axial position fine-tuning platform 33 and a universal shaft bracket 34. The linear slide 31 is arranged horizontally on the test platform 50. By pushing its slider to slide, the horizontal position of the infrared thermometer 20 can be adjusted. The linear slide 31 also includes a slider locking knob 311. The slider locking knob 311 is provided on the slider and placed above the test platform 50. By tightening it on the test platform 50, the horizontal position of the infrared thermometer 20 is fixed. The lifting assembly 32 is fixed on the slide of the linear slide 31. By adjusting the height of the lifting assembly 32, the horizontal height of the infrared thermometer 20 can be controlled; the axial position fine-tuning platform 33 is used to make fine adjustments to the position of the infrared thermometer 20 in the three-axis direction; the universal shaft bracket 34 is used to adjust the tilt angle of the infrared thermometer 20. Specifically, the lifting assembly 32 includes: an outer rod 321, an inner rod 322, a lifting platform 323, and a lifting locking knob 324; the outer rod 321 is fixed to the slider of the linear slide 31, and the inner rod 322 is movably connected to the inner part of the outer rod 321. By pulling the inner rod 322 to slide relative to the outer rod, the height of the lifting assembly 32 can be adjusted; the bottom of the lifting platform 323 is fixedly connected to the top of the inner rod 322, and the lifting locking knob 324 is set on the outside of the inner rod 322. By tightening the lifting locking knob 324 to lock the position of the inner rod 322, the height of the lifting assembly 32 is fixed. Figure 10-11The axial position fine-tuning platform 33 includes a three-axis slide 331 and vertical differential heads 332, left-right differential heads 333, and front-back differential heads 334 for fine-tuning the position of the three-axis slide 331 along the three axes. It also includes a fine-tuning platform base 335 fixed to the bottom of the three-axis platform and a gimbal mounting base 336 fixed to the top of the three-axis platform. The base of the axial position fine-tuning platform 33 is fixed to the lifting platform 323 of the lifting assembly 32. The universal shaft bracket 34 specifically includes: a first support rod 341 and a second support rod 342 hinged to each other, a tightening nut 343 for fixing the angle between the two support members, a fine-tuning rod 344 and a thermometer fixing frame 345; one end of the first support rod 341 is connected to the universal bracket mounting platform 336 of the axial fine-tuning platform 33 through a universal head 346, one end of the second support rod 342 is connected to the fine-tuning rod 344 through a universal head 346, and both ends of the fine-tuning rod 344 are respectively connected to the second support rod 342 and the thermometer fixing frame 345 through the universal head 346, and the infrared thermometer 20 is fixedly connected to the thermometer fixing frame 345; by adjusting the angle between the first support rod 341 and the second support rod 342, and adjusting the angle of each universal head 346, the tilt angle of the infrared thermometer 20 can be adjusted.

[0055] See Figure 8 The position of the infrared thermometer 20 is adjusted by the position adjustment mechanism 30 so that the focusing lens 21 of the infrared thermometer 20 is facing the center of the bulb 11. When the bulb 11 emits light, it passes through the calcium fluoride glass sheet 14 and directly hits the outside of the lamp cup 12, and the infrared thermometer 20 focuses and forms an image.

[0056] Multi-temperature measurement point detection mechanism, see Figure 9 , including: a thermocouple thermometer 40, which is used to read in real time the temperature of the filament 15, front molybdenum sheet 16, and rear molybdenum sheet 17 of the bulb 11 under different usage conditions of the test stage lighting fixture 70. The basic principle of thermocouple temperature measurement is that two raw conductors of different components form a closed loop. When there is a temperature gradient at the two ends, current will flow through the loop. The thermocouple thermometer 40 is equipped with three K-type thermocouple temperature sensing wires 41; the same end of the three K-type thermocouple temperature sensing wires 41 is respectively connected to the filament 15, front molybdenum sheet 16, and rear molybdenum sheet 17 in the gas discharge lamp 10, and the other end is connected to the thermocouple thermometer 40 through a standard plug 42, thereby respectively detecting whether the temperature of the filament 15, front molybdenum sheet 16, and rear molybdenum sheet 17 of the bulb 11 meets the range requirements.

[0057] The test platform 50 is used to install the stage lamp 70 upright. The bulb center detection mechanism and the multi-temperature detection mechanism are fixedly set on the test platform 50. Figure 4-Figure 5 When it is necessary to test the temperature of the bulb 11 of the stage lighting fixture 70 in the upright installation posture, the base of the stage lighting fixture 70 is fixed on the test platform 50 .

[0058] The hanging bracket 60 is used to hang the inverted stage lighting fixture 70. The stage lighting fixture 70 is fixed upside down on the hanging bracket 60 through a hook device. Figure 6-Figure 7 .

[0059] According to the test requirements, the stage lighting fixture 70 can be fixed upright on the test platform 50, or hung in an inverted position on the hanging bracket 60; in the actual use scenario of the stage lighting fixture 70, upright installation and inverted installation are both common installation methods, and the present invention can perform temperature detection for the two installation methods respectively.

[0060] See Figure 4-Figure 5 The number of bulb center detection mechanisms can be one, detecting the temperature on one side of the bulb 11; or two, detecting both sides of the bulb 11, respectively, to provide a more comprehensive test conclusion. When two bulb center detection mechanisms are provided, circular cutouts 13 are provided on opposite sides of the temperature measuring bulb cup 12. Calcium fluoride glass pieces 14 are positioned within each of the circular cutouts 13, facing the center of the bulb 11. The two bulb center detection mechanisms are located on either side of the temperature measuring bulb, so that the focusing lenses 21 of the infrared thermometers 20 on both sides simultaneously face the center of the bulb 11.

[0061] The present invention also discloses a detection method for using the above temperature detection device, see Figure 21 , which includes the following steps:

[0062] Lamp installation steps: According to the current required test state, the stage lamp 70 is selected to be installed upright on the test platform 50 or hung inverted on the hanging bracket 60, so as to perform temperature testing on the stage lamp 70 in the upright or inverted installation mode.

[0063] Lamp startup steps: Install the temperature-sensing bulb into the lamp's light source module. Connect the lamp to a power supply with a power detection module. Disconnect the power to the horizontal and vertical rotation motors within the stage lamp 70 (the horizontal and vertical rotation motors are already built into the stage lamp 70 and are used to control the rotation of the U-shaped bracket around the base and the lamp head around the U-shaped bracket). The lamp then performs a power-on self-test, illuminating the temperature-sensing bulb using the lamp's display panel test software. This controls the normal operation of the stage lamp 70 and ensures that the projected light beam is concentric with the lamp's central optical axis. The control software, test software, and display panel built into the stage lamp 70 are all commonly used control technologies in the stage lighting industry, and their principles will not be elaborated on here.

[0064] Lamp head posture adjustment steps: According to the current test state required, start the horizontal and vertical rotation motors in the lamp and rotate the lamp head to the test angle required for the test; refer to Figures 14-20The test angles are as follows: the lamp head is rotated to 0° (initial position), 45°, 90°, 135°, 180°, 225°, and 270° (maximum rotation position). Figures 14-20 The various rotation angles of the stage lighting fixture 70 when installed upright are shown. The same applies to the various rotation angles when installed in an inverted position and are not shown again. Furthermore, after the lighting fixture posture is adjusted, a lighting fixture posture determination step is included: a gravity sensor chip is installed in the lamp head, and the gravity sensor chip is used to determine whether the stage lighting fixture 70 is installed upright or inverted. If not, the above lighting fixture installation steps are repeated; the vertical motor control software in the lamp determines the rotation angle of the lamp head. If the rotation angle of the lamp head is not at 0°, 45°, 90°, 135°, 180°, 225°, or 270°, the fan speed is appropriately adjusted using the proximity principle or the segmented change curve diagram.

[0065] Lamp operating mode switching steps: Based on the currently required test results, the operating mode within the stage lamp 70 is selected by controlling the various drive mechanisms within the lamp. The operating modes include: light shielding mode, white light mode, CMYK color filter mode, color filter mode, and color filter and CMYK filter superposition mode. It should be noted that the stage lamp is equipped with multiple optical components, including a light shielding filter 75, a CMYK color wheel, a multi-color wheel, and their respective motion drive mechanisms (control motors). These are all commonly used components within the stage lamp 70 and need not be described in detail. When the shading plate 75 is driven to cut into the optical path axis of the stage light beam, the stage light is in a closed light state, and it is in the shading mode at this time; when all optical components do not cut into the optical path axis, the light beam is directly emitted without any obstruction, and it is in the white light mode at this time; when a color filter of any CMYK color cuts into the optical path axis, it is in the CMYK color filter cutting mode; when any color filter on the color wheel cuts into the optical path axis, it is in the color filter cutting mode; when the color filters on the color wheel and the CMYK color wheel are superimposed and cut into the optical path at the same time, it is in the color filter and CMYK color filter superimposed cutting mode.

[0066] For ease of understanding, the internal structure of the stage lighting fixture 70 is explained below. This part is the existing technology in the field of stage lighting. Figure 12-13In addition to the light source, the stage lamp 70 also includes: heat dissipation fans 71 installed on two opposite sides of the light source (including two bulb heat dissipation centrifugal fans 711, a light source chamber air inlet fan 712 and a light source chamber air outlet fan 713; the bulb heat dissipation centrifugal fan 711 is used to guide the air flow into the air guide member on the side of the lamp cup 12, and the air flow enters the interior of the lamp cup 12 through the guidance of the air guide member to dissipate the heat of the bulb 11, playing a major heat dissipation role), a CMYK color disk module 72 and a drive motor that cuts it into or out of the optical path axis, which is provided with multiple A color disk module 73 with different color sheets and a driving motor for cutting it into or out of the optical path axis, a glass pattern disk module 74 with multiple different pattern styles and a driving motor for cutting it into or out of the optical path axis, a shading sheet 75 for blocking the light beam of the light source and a driving motor for cutting it into or out of the optical path axis (the lamp is mainly shielded by the shading sheet 75 during the intermission period of the performance, and the lamp no longer emits a light beam. At the same time, the power of the light bulb 11 is reduced by 20-30% and switched to energy-saving mode), and a series of optical imaging lenses.

[0067] Light bulb center detection steps: Turn on the power of the horizontal and vertical rotation motors in the lamp, control the lamp holder to rotate to the test angle, adjust the focusing lens 21 of the infrared thermometer 20 to a position directly opposite the center of the light bulb 11 through the position adjustment mechanism 30, while maintaining the test distance, turn on the power of the infrared thermometer 20, and when the lamp is in a thermally stable state, detect and record the temperature of the center of the light bulb 11;

[0068] Multi-temperature measurement point detection step: insert the standard plugs 42 on the thermocouple temperature sensing wires connected to the filament 15, the front molybdenum sheet 16, and the rear molybdenum sheet 17 of the light bulb 11 into the corresponding sockets of the thermocouple thermometer 40, and perform temperature detection on the filament 15, the front molybdenum sheet 16, and the rear molybdenum sheet 17 of the light bulb 11 respectively. Select the temperature data of the lamp in the stable state as the valid temperature measurement data and record it;

[0069] According to the different test states required, the above-mentioned lamp installation steps (for example, switching the upright installation to the inverted installation), lamp head posture adjustment steps (for example, switching the rotation angle from 45° to 90° or other angles), and lamp working mode switching steps (switching the shading mode to the white light mode or other modes) are repeated to adjust the lamp to different working states; according to each different working state of the lamp, the above-mentioned bulb center detection steps and multiple temperature measurement point detection steps are repeated to respectively detect the temperature of the lamp bulb 11 in various working states;

[0070] Fan data import step: In the above-mentioned bulb center detection step and the multiple temperature measurement point detection step, the control voltage and speed of the heat dissipation fan 71 in the lamp are adjusted so that the temperature of each temperature measurement position of the lamp 11 reaches the required level. Then, the fan control voltage and speed of the lamp in various usage states are imported into the lamp bulb 11 control software;

[0071] Burn-in test steps: Remove the temperature measuring bulb and install a standard bulb into the lamp's light source module. Check and confirm that the fan control voltage and speed are consistent with the imported test data. Burn-in the lamp for at least 8 hours under various test conditions. After each burn-in test, check the bulb 11 for signs of blackening or whitishness, and for signs of excessive oxidation, shrinkage, or blackening of the molybdenum sheet and filament 15. Once all burn-in tests have been completed and the bulb 11 is confirmed to be healthy, the lamp's heat dissipation meets the standards and can be introduced into production.

[0072] As one example, Figure 22 Provides temperature test experimental data of the stage lighting fixture 70 in various working conditions when it is in an upright installation mode. Figure 23 Provided are temperature test experimental data under various working conditions when the stage lighting fixture 70 is in an inverted installation mode.

[0073] The technical effects that can be achieved by the present invention are as follows:

[0074] (1) First, the present invention can simultaneously detect the temperature of each key position of the gas discharge lamp 10: by opening a circular cutout 13 on the side of the lamp cup 12 of the bulb 11, a calcium fluoride glass sheet 14 suitable for infrared optical testing is installed in the cutout. The calcium fluoride glass sheet 14 is light-transmissive and temperature-resistant above 1300°C, and has little effect on the accuracy of the infrared thermometer 20 testing the center of the bulb 11. (2) The position of the infrared thermometer 20 can be adjusted by the position adjustment mechanism 30 so that it can be accurately aligned with the center of the bulb 11. The horizontal position is adjusted by the linear slide 31, the height of the infrared thermometer 20 is adjusted by the lifting assembly 32, and the inclination of the infrared thermometer 20 is adjusted by the universal shaft bracket 34, ensuring that the focusing lens 21 of the infrared thermometer 20 can be aligned with the center of the calcium fluoride glass sheet 14 and the center of the bulb 11, so as to perform infrared temperature detection on the bulb 11. (3) The thermocouple thermometer 40 is connected to the filament 15, the front molybdenum sheet 16, and the rear molybdenum sheet 17 in the bulb 11 through multiple thermocouple temperature sensing wires, and performs temperature detection on these key positions at the same time to ensure the comprehensiveness of the detection parts of the bulb 11. (4) It is also equipped with a test platform 50 and a hanging bracket 60 to provide installation support for the upright installation posture and the inverted hanging posture of the lamp, so as to perform temperature detection on the lamp in the upright posture and the inverted posture respectively, covering the different installation postures that the lamp may appear in actual use scenarios. (5) The lamp head is tested at various different rotation angles, covering the various different rotation angles commonly used in actual use scenarios. (6) Under the premise of performing temperature detection on each key position of the bulb 11 at the same time, by controlling the various motion drive mechanisms inside the lamp, the lamp is switched to different working modes, and the temperature of the lamp in different working states can be detected and recorded separately, covering the various different working modes that the lamp may appear in actual use.

[0075] Compared to the previous single temperature test of the bulb 11, the present invention first installs the bulb 11 inside the lamp and then tests the key positions of the bulb 11 after the entire stage lamp is assembled. This simulates the heat dissipation environment and heat dissipation conditions faced by the gas discharge lamp 10 in actual use, so that the temperature detection results can better reflect the actual heat dissipation performance of the product. The present invention covers multiple key temperature measurement points of the bulb 11 and covers various different working states of the lamp. It simulates the working conditions that may occur in the actual use of the lamp to the greatest extent, establishes a comprehensive temperature detection mechanism for the gas discharge lamp 10, and provides a reliable temperature detection device for this temperature detection mechanism. The temperature detection device has high working accuracy and high degree of integration, which can effectively improve the yield rate of gas discharge bulb stage lamps, prevent the gas discharge lamp 10 from malfunctioning or being damaged during use, and extend the product life of the stage lamp.

[0076] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A temperature detection device for a stage lamp, wherein the light source of the stage lamp is a gas discharge lamp to be detected, characterized in that: The temperature detection device for stage lights comprises: A bulb center detection mechanism includes: an infrared thermometer and a position adjustment mechanism; a circular cutout is provided on the side of the lamp cup of the gas discharge lamp to be detected, and a calcium fluoride glass sheet is provided on the outer surface of the circular cutout, the center of the calcium fluoride glass sheet is directly opposite the center of the bulb, and the outer diameter of the circular cutout is larger than the diameter of the bulb center, so that the bulb can be detected from the outside through the calcium fluoride glass sheet; the focusing lens of the infrared thermometer is directly opposite the center of the calcium fluoride glass sheet and the center of the bulb, so that infrared rays can pass through the calcium fluoride glass sheet and directly illuminate the bulb; the position adjustment mechanism is used to adjust the position of the infrared thermometer, and includes: a linear slide rail, a lifting assembly, and a universal shaft bracket; both ends of the universal shaft bracket are provided with universal heads, which are respectively connected to the infrared thermometer and the lifting assembly; the lifting assembly is fixed to the slider of the linear slide rail, and the linear slide rail is arranged horizontally; A multi-temperature measurement point detection mechanism includes: a thermocouple thermometer; the thermocouple thermometer is connected to the filament, the front molybdenum sheet and the rear molybdenum sheet in the gas discharge lamp through thermocouple temperature sensing wires; A test platform, on which the bulb center detection mechanism and the multi-temperature measurement point detection mechanism are both fixedly arranged; Hanging bracket, used to hang inverted stage lights; The stage light is fixedly mounted upright on the test platform, or the stage light is hung upside down on the hanging bracket; The position adjustment mechanism also includes an axial position fine-tuning platform for finely adjusting the position of the infrared thermometer; the axial position fine-tuning platform includes a three-axis slide and an upper and lower differential head, a left and right differential head, and a front and back differential head for respectively controlling the fine-tuning of the position of the three-axis slide in the three-axis directions; the bottom of the axial position fine-tuning platform is fixed to the top of the lifting assembly, and the universal head at one end of the universal shaft bracket is connected to the top of the axial position fine-tuning platform; The position adjustment mechanism further includes: a slider locking knob; the slider locking knob is arranged on the slider of the linear slide rail and is placed above the test platform.

2. The temperature detection device for a stage light according to claim 1, wherein: The axial position fine-tuning platform further comprises a fine-tuning platform base and a universal bracket mounting platform respectively fixed to the bottom and top of the three-axis slide.

3. The temperature detection device for a stage light according to claim 2, wherein: The lifting assembly includes: an outer rod, an inner rod, a lifting platform and a lifting locking knob; the outer rod is fixedly arranged, and the inner rod is movably sleeved inside the outer rod; the bottom of the lifting platform is fixedly connected to the top of the inner rod, and the top of the lifting platform is fixedly connected to the fine-tuning platform base; the lifting locking knob is arranged on the outside of the inner rod and is used to lock the position of the inner rod.

4. The temperature detection device for a stage light according to claim 2, wherein: The universal shaft bracket includes: a first support rod and a second support rod hinged to each other, a tightening nut for fixing the angle between the two support members, a fine-tuning rod and a thermometer fixing frame; one end of the first support rod is connected to the universal bracket mounting platform of the axial fine-tuning platform through a universal head, one end of the second support rod is connected to the fine-tuning rod through a universal head, both ends of the fine-tuning rod are respectively connected to the second support rod and the thermometer fixing frame through a universal head, and the infrared thermometer is fixedly connected to the thermometer fixing frame.

5. The temperature detection device for a stage light according to claim 1, wherein: The thermocouple thermometer is provided with three K-type thermocouple temperature sensing wires; one end of the three K-type thermocouple temperature sensing wires is respectively connected to the filament, front end molybdenum sheet and rear end molybdenum sheet in the gas discharge lamp, and the other end is connected to the thermocouple thermometer through a standard plug.

6. The temperature detection device for a stage light according to claim 1, wherein: The number of the bulb center detection mechanism is one, or, There are two bulb center detection mechanisms, and circular cutouts are provided on two opposite sides of the lamp cup of the gas discharge lamp. The outer surfaces of the circular cutouts on both sides are provided with calcium fluoride glass pieces facing the bulb center; the two bulb center detection mechanisms are respectively arranged on both sides of the gas discharge lamp so that the focusing lenses of the infrared thermometers on both sides are simultaneously facing the bulb center.

7. A temperature detection method for a stage light, applied to the temperature detection device for a stage light according to any one of claims 1 to 6, characterized in that: include: Lamp installation steps: According to the required test state, install the lamp upright on the test platform or hang it upside down on the hanging bracket; Lamp startup steps: Install the temperature measuring bulb into the light source module of the lamp, connect the lamp to the power supply with the power detection module, disconnect the power supply of the horizontal and vertical rotation motors in the lamp, power on the lamp to perform a self-test, light the temperature measuring bulb through the lamp display panel test software, control the lamp to work normally, and control the projected light beam of the lamp to be concentric with the central optical axis of the lamp; Lamp head posture adjustment steps: according to the required test state, start the horizontal and vertical rotation motors in the lamp and rotate the lamp head to the required test angle; the test angles are 0°, 45°, 90°, 135°, 180°, 225°, and 270°, of which 270° is the maximum rotation position; Lamp working mode switching steps: According to the required test results, the internal working mode of the lamp is selected by controlling the various driving mechanisms in the lamp; the working modes include: shading mode, white light mode, CMYK color chip cut-in mode, color chip cut-in mode, and color chip and CMYK color chip superimposed cut-in mode; Steps for detecting the center of the bulb: Turn on the power of the horizontal and vertical rotation motors in the lamp, control the lamp holder to rotate to the test angle, and use the position adjustment mechanism to adjust the focus lens of the infrared thermometer to a position directly opposite the center of the bulb. At the same time, maintain the test distance, turn on the power of the infrared thermometer, and when the lamp is in a thermally stable state, measure and record the temperature of the center of the bulb. Multi-temperature measurement point detection steps: Insert the standard plugs of the thermocouple temperature sensing wires connected to the filament, front molybdenum sheet and rear molybdenum sheet of the bulb into the corresponding sockets of the thermocouple thermometer respectively, and perform temperature detection on the filament, front molybdenum sheet and rear molybdenum sheet of the bulb respectively. Select the temperature data of the lamp in the stable state as the effective temperature measurement data and record it; Repeat the above steps of lamp installation, lamp head posture adjustment, and lamp working mode switching according to each different working state of the lamp to adjust the lamp to different working states; then repeat the above steps of bulb center detection and multiple temperature measurement point detection to detect the temperature of the lamp bulb in different working states; Fan data importing step: During the above-mentioned bulb center detection step and the multiple temperature measurement point detection step, the control voltage and speed of the heat dissipation fan in the lamp are adjusted so that the temperature at each temperature measurement position of the lamp reaches the required level. Then, the fan control voltage and speed under various operating conditions of the lamp are imported into the lamp control software; Aging test steps: Remove the temperature measuring bulb and install the standard bulb into the light source module of the lamp; check and confirm whether the fan control voltage and speed are consistent with the imported test data; subject the lamp to aging tests for more than 8 hours under various test conditions, and after the aging test under each test condition, check whether the bulb ball appears black or white, and whether the molybdenum sheet and filament of the lamp are excessively oxidized, smaller or blackened; after the lamp completes all aging tests and is judged to be normal, it is determined that the heat dissipation of the lamp light source meets the standards and the product can be introduced into production.

8. The temperature detection method for a stage light according to claim 7, wherein: Between the lamp head posture adjustment step and the bulb center detection step, there is also a lamp posture judgment step: through the gravity sensing chip set inside the lamp head, it is judged whether the lamp is installed upright or inverted; through the vertical motor control software in the lamp head, the rotation angle of the lamp head is judged. If the rotation angle of the lamp head is not at 0°, 45°, 90°, 135°, 180°, 225°, or 270°, the fan speed is appropriately adjusted according to the proximity principle or the segmented change curve.

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