Heat dissipation structure for stage lamp

Abstract

The invention relates to the technical field of lamp heat dissipation, in particular to a heat dissipation structure for a stage lamp, which comprises a lamp body and further comprises a detachable air inlet part, the detachable air inlet part is detachably mounted at the other end of the lamp body, a flow guide movable air duct is further inserted in the lamp body, and the detachable air inlet part is detachably mounted at the other end of the lamp body. The flow guide movable air cylinder is connected with the lamp body in a sliding mode, and fan equipment used for dissipating heat of the light-emitting part is further arranged in the flow guide movable air cylinder. The filter screen II penetrates through the detachable air inlet part and is detachably connected with the flow guide movable air duct; the filter screen I is fixedly mounted on the annular baffle I, and the diameter of a filter hole of the filter screen I is smaller than that of a filter hole of the filter screen II; according to the heat dissipation structure for the stage lamp, the ventilation quantity can be changed instantly, so that the heat dissipation requirement is met, and the service life of the lamp body is prevented from being affected.

Description

Technical Field

[0001] The invention relates to the technical field of lamp heat dissipation, in particular to a heat dissipation structure for stage lamps. Background Art

[0002] With the rapid development of stage lighting technology, the widespread use of high-power LED and laser light sources has made the heat dissipation requirements of stage lamps increasingly severe. At present, stage lamps with a power level of 500W-1500W (such as moving head lights and beam lights, etc.) generally adopt forced air cooling solutions, relying on cooling fins and high-speed fans for cooling. However, when such lamps are used for a long time outdoors or in dusty environments, they face two major technical bottlenecks: First, although the traditional fixed dust filter can prevent dust from entering the interior of the lamp, the small filter holes will lead to insufficient air intake, seriously affecting the heat dissipation efficiency, and it is easy to get clogged. Actual measurements show that filter blockage can reduce the heat dissipation efficiency by more than 40%, causing the LED junction temperature to rise by 15-20℃; second, if the filter is removed or the filter holes are enlarged, although the heat dissipation can be improved, it will accelerate the accumulation of dust inside the lamp, thereby damaging the optical components and circuits. More critically, when the filter is clogged with dust, resulting in insufficient heat dissipation, traditional lamps lack a real-time response mechanism and can often only be discovered through manual inspections (with an average response lag of more than 48 hours), which can easily cause light source decay (LED life is reduced by 50% for every 10°C increase in junction temperature over the nominal value) or sudden failure.

[0003] At present, due to the different usage scenarios of stage lamps and the blockage of filters, the amount of heat accumulated inside the lamps may vary greatly, and the heat dissipation method with a fixed structure is difficult to meet actual needs, resulting in poor heat dissipation effect of the lamps and affecting the service life of the lamps. Therefore, in view of the above situation, it is urgent to develop a heat dissipation structure for stage lamps to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The object of the present invention is to provide a heat dissipation structure for stage lighting to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A heat dissipation structure for a stage lamp, comprising a lamp body, one end of which is provided with a light emitting portion, and further comprising:

[0007] A detachable air inlet portion, the detachable air inlet portion being detachably mounted on the other end of the lamp body, wherein a flow-guiding movable air cylinder is further inserted into the lamp body, the flow-guiding movable air cylinder is slidably connected to the lamp body, and a fan device for dissipating heat from the light-emitting portion is further arranged in the flow-guiding movable air cylinder;

[0008] Filter screen 2, wherein the filter screen 2 penetrates the detachable air inlet portion and is detachably connected to the guide movable air cylinder, and an annular baffle plate 1 is further provided at the end of the filter screen 2;

[0009] and a filter screen 1, wherein the filter screen 1 is fixedly mounted on the annular baffle 1, wherein the filter hole diameter of the filter screen 1 is smaller than the filter hole diameter of the filter screen 2;

[0010] External force drives the guide moving air duct and drives the second filter to move toward the outside of the lamp body, so that the second filter is completely exposed to the outside of the lamp body. By changing the way the guide moving air duct is connected to the outside structure, the heat dissipation air volume can be adjusted.

[0011] As a further solution of the present invention: the fan device is a variable frequency cooling fan, the variable frequency cooling fan is located in the guide moving wind tube and is connected to the inner wall of the lamp body;

[0012] Among them, the variable frequency cooling fan is also arranged close to the light-emitting part, and the variable frequency cooling fan is also electrically connected to the detector in the lamp body, and is used to control the ventilation volume according to the state of the guide moving wind tube being connected to the outside detected by the detector.

[0013] As a further solution of the present invention: a plurality of heat dissipation fins are further provided on the lamp body, and the plurality of heat dissipation fins are provided around the light-emitting portion;

[0014] The lamp body is also provided with a plurality of air outlets, the air outlets are located between adjacent heat dissipation fins, and the air outlets are also connected to the guide movable wind tube for discharging hot air carrying heat in the lamp body.

[0015] As a further solution of the present invention: an annular baffle plate 3 is fixedly mounted on the end of the guide movable wind tube, and the annular baffle plate 3 is slidably connected to the inner wall of the lamp body;

[0016] The guide movable wind tube is also provided with a plurality of limit slide rails;

[0017] A guide sliding ring seat is fixedly installed in the lamp body, and the guide sliding ring seat is slidably connected to the plurality of limit sliding rails.

[0018] As a further solution of the present invention: a plurality of limit stops are further provided on the inner wall of the lamp body, and an elastic column is fixedly mounted on each of the limit stops;

[0019] A pressure detector is fixedly mounted on the elastic column. When the filter screen 2 is completely exposed to the outside of the lamp body, the pressure detector abuts against the end of the limiting slide rail, wherein the number of the limiting slide rails is equal to that of the pressure detectors.

[0020] As a further solution of the present invention: a second annular baffle is fixedly installed on the guide movable wind tube, and a plurality of air volume detectors are arranged between the second annular baffle and the first annular baffle;

[0021] Wherein, the air volume detector is arranged opposite to the filter screen 2, and a power supply unit is also arranged on the air volume detector;

[0022] A warning piece is fixedly mounted on the lamp body, and the warning piece is electrically connected to the air volume detector.

[0023] As a further solution of the present invention: a plurality of telescopic driving members are fixedly mounted on the inner wall of the detachable air inlet portion, and the telescopic driving members are electrically connected to a temperature sensor disposed in the guide movable air cylinder;

[0024] The annular baffle plate 2 is provided with a plurality of adsorption buffer parts, and the plurality of adsorption buffer parts are respectively arranged opposite to the plurality of telescopic driving members;

[0025] When the telescopic driving member is energized and generates a magnetic attraction force on the adsorption buffer portion, the adsorption buffer portion will abut against the telescopic driving member. At this time, the second filter is completely exposed to the outside of the lamp body.

[0026] As a further solution of the present invention: a plurality of return springs are arranged between the annular baffle plate 2 and the guide sliding ring seat, and when the adsorption buffer portion abuts against the telescopic driving member, the return springs are in a stretched state.

[0027] As a further solution of the present invention: the lamp body is further provided with a support seat, the number of the support seats is two, and the two support seats are symmetrically distributed on both sides of the lamp body;

[0028] Each of the support seats is provided with an angle adjustment portion, and a lamp bracket is installed on the angle adjustment portion.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. When the staff learns that the lamp body is at high temperature, the lamp body can be extinguished if the use scenario allows. If the lamp body is not allowed to be extinguished, the annular baffle 1 can be pulled manually to expose the filter 2 completely to the outside of the lamp body. Since the filter hole diameter of the filter 2 is slightly larger than the filter hole diameter of the filter 1, the ventilation volume can be changed instantly to meet the heat dissipation requirements and avoid affecting the service life of the lamp body;

[0031] 2. The present invention preferably adopts a mechanical driving method, so that when the heat in the guide moving wind tube reaches the highest value, the temperature sensor will control the guide moving wind tube to automatically move in the lamp body, thereby changing the structure of the guide moving wind tube connected to the outside, so as to achieve the purpose of efficient heat dissipation, and can be adapted to use in multiple scenarios;

[0032] 3. After the overall guide moving air duct, filter 2 and filter 1 move to the outside of the lamp body, the space inside the lamp body can be instantly increased, thereby reducing the accumulation of some heat, facilitating the flow of hot air, and improving the efficiency of heat dissipation, providing convenience for the staff.

[0033] 4. Through the linkage between the temperature sensor and the variable frequency fan, the "temperature-speed-air volume" closed-loop control is realized, dynamically matching the heat dissipation requirements, and energy saving and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the three-dimensional structure of the lamp body in the embodiment of the present invention.

[0035] Figure 2 Schematic diagram of the three-dimensional structure of filter screen 1 in an embodiment of the present invention.

[0036] Figure 3 It is a schematic diagram of a partial cross-sectional structure of a lamp bracket in an embodiment of the present invention.

[0037] Figure 4 It is a schematic diagram of the three-dimensional structure of the diversion moving wind tube in an embodiment of the present invention.

[0038] Figure 5 It is a three-dimensional structural schematic diagram of the installation position of the air volume detector in an embodiment of the present invention.

[0039] Figure 6 It is a schematic diagram of the three-dimensional structure of the elastic column distribution in an embodiment of the present invention.

[0040] Figure 7 Schematic diagram of the three-dimensional structure of filter screen 2 in an embodiment of the present invention.

[0041] Figure 8 It is a schematic cross-sectional structural diagram of the guide sliding ring seat in an embodiment of the present invention.

[0042] In the figure: 1-lamp body, 2-light-emitting part, 3-heat dissipation fins, 4-detachable air inlet part, 5-air outlet, 6-angle adjustment part, 7-lamp bracket, 8-warning part, 9-annular baffle one, 10-filter one, 11-support seat, 12-telescopic drive part, 13-filter two, 14-annular baffle two, 15-adsorption buffer part, 16-reset spring, 17-limiting slide rail, 18-flow guide mobile wind tube, 19-annular baffle three, 20-air volume detector, 21-power supply part, 22-guide sliding ring seat, 23-pressure detector, 24-elastic column, 25-limiting block seat, 26-frequency conversion cooling fan. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0045] See also Figure 1-Figure 8 The embodiment of the present invention provides a heat dissipation structure for a stage lamp, comprising a lamp body 1, a light emitting portion 2 is disposed at one end of the lamp body 1, and further comprising:

[0046] A detachable air inlet 4, which is detachably mounted on the other end of the lamp body 1, wherein a flow-guiding movable air cylinder 18 is further inserted into the lamp body 1, the flow-guiding movable air cylinder 18 is slidably connected to the lamp body 1, and a fan device for dissipating heat from the light-emitting part 2 is further arranged in the flow-guiding movable air cylinder 18;

[0047] The second filter screen 13, the second filter screen 13 passes through the detachable air inlet portion 4, and is detachably connected to the guide movable air cylinder 18, and the end of the second filter screen 13 is also provided with an annular baffle plate 9, when the lamp body 1 works normally, the annular baffle plate 9 abuts against the detachable air inlet portion 4, and the abutting portion is in a sealed state;

[0048] and a filter screen 10, wherein the filter screen 10 is fixedly mounted on the annular baffle 1 9, wherein the filter hole diameter of the filter screen 10 is smaller than the filter hole diameter of the filter screen 2 13;

[0049] External force drives the guide movable air cylinder 18 and drives the filter 2 13 to move toward the outside of the lamp body 1, so that the filter 2 13 is completely exposed to the outside of the lamp body 1. The heat dissipation air volume is adjusted by changing the way the guide movable air cylinder 18 is connected to the outside.

[0050] During the use of the stage lamp, when the light-emitting part 2 on the lamp body 1 is emitting light normally, the fan device in the guide moving wind tube 18 rotates, so that the external air can be introduced into the lamp body 1 through the filter 10, and the heat-generating components of the light-emitting part 2 are cooled by air. At this time, since the filter holes of the filter 10 are small, dust can be prevented from entering the lamp body 1 while meeting the normal ventilation volume. When the filter 10 is blocked or the use scenario of the light-emitting part 2 changes, especially when the filter 10 is blocked, the heat in the guide moving wind tube 18 will increase. At this time, the TMP36 temperature sensor (analog output, ±2℃ accuracy, -40℃-125℃ range) set in the guide moving wind tube 18 can be used to detect The structure of the flow guide mobile wind tube 18 connected to the outside is changed automatically or manually. When manual drive is adopted, the temperature sensor will transmit the detected data to the mobile terminal device of the staff. When the staff learns that the inside of the lamp body 1 is in a high temperature state, the lamp body 1 can be extinguished if the use scenario permits. If it is used in a scenario where extinguishing is not allowed, the annular baffle 1 9 can be pulled by manpower to make the filter 2 13 completely exposed to the outside of the lamp body 1. Since the filter hole diameter of the filter 2 13 is slightly larger than the filter hole diameter of the filter 10 (the difference between the filter hole diameters of the two is not particularly large, on the one hand, the filter 2 13 can replace the blocked filter 10 to continue the air circulation work, and can slightly increase the circulation volume , which can increase the heat dissipation efficiency to solve the problem of heat accumulation in the initial stage. On the other hand, it can also prevent a large amount of dust from entering the lamp body 1). The ventilation volume can be changed instantly to meet the heat dissipation needs and avoid affecting the service life of the lamp body 1. After the use of the lamp body 1 is over, the filter 10 can be cleaned in time (the cleaning method is: first, the detachable air inlet part 4 is removed from the lamp body 1, so that the detachable air inlet part 4 and the lamp body 1 are separated by a certain distance, and then the filter 2 13 is removed from the end of the guide movable air cylinder 18, wherein the filter 2 13 and the guide movable air cylinder 18 can be connected by screws or buckles. When the filter 2 13 is separated from the guide movable air cylinder 18, it is connected by people. The annular baffle plate 19 is pulled by force, so that the annular baffle plate 19, the filter screen 10 and the filter screen 2 13 can be pulled out from the detachable air inlet part 4 for cleaning), and the filter screen 10 is restored to its original position, so as to avoid interruption of lighting work and affect the efficiency and progress of work. Since the use position and height of the lamp are different, in order to ensure the safety of use, the present invention preferably adopts a mechanical driving method, so that when the heat in the guide moving wind tube 18 reaches the highest value, the temperature sensor will control the guide moving wind tube 18 to automatically move in the lamp body 1, thereby changing the structure of the guide moving wind tube 18 connected to the outside, so as to achieve the purpose of efficient heat dissipation. In addition, after the overall guide moving wind tube 18, the filter screen 2 13 and the filter screen 10 move to the outside of the lamp body 1,It can also instantly increase the space inside the lamp body 1, thereby reducing the accumulation of some heat, facilitating the flow of hot air, and improving the efficiency of heat dissipation, providing convenience for the staff.

[0051] In one embodiment of the present invention, see Figure 1-Figure 8 The fan device is a variable frequency cooling fan 26, which is located in the guide moving wind tube 18 and connected to the inner wall of the lamp body 1;

[0052] The variable frequency cooling fan 26 is also arranged near the light emitting part 2, and is also electrically connected to the detector in the lamp body 1, for controlling the ventilation volume according to the state of the flow guide moving wind tube 18 being connected to the outside detected by the detector.

[0053] The lamp body 1 is also provided with a plurality of heat dissipation fins 3, and the plurality of heat dissipation fins 3 are arranged around the light emitting part 2;

[0054] The lamp body 1 is also provided with a plurality of air outlet holes 5 , which are located between adjacent heat dissipation fins 3 and are also connected to the guide movable air cylinder 18 for discharging hot air carrying heat in the lamp body 1 .

[0055] When the guide moving wind tube 18 moves outward, the working power of the variable frequency cooling fan 26 can be increased through the control of the detector to cooperate with the filter holes with larger diameters, so that the heat accumulated in the lamp body 1 can be quickly processed to minimize the impact of thermal energy on the service life of each device, and under normal use, the variable frequency cooling fan 26 works at a lower power, which can save resources while meeting the heat dissipation requirements. At the same time, the variable frequency cooling fan 26 will discharge the hot air carrying heat to the outside of the lamp body 1 through multiple air outlets 5. At the same time, since the air outlets 5 are located between adjacent heat dissipation fins 3, the flowing air will also take away the heat carried on the heat dissipation fins 3 to reduce the temperature of the heat dissipation fins 3, thereby further improving the heat dissipation effect of the lamp body 1 and the efficiency of the heat dissipation work.

[0056] In one embodiment of the present invention, see Figure 1-Figure 8 The end of the guide moving wind tube 18 is also fixedly mounted with an annular baffle plate 3 19, and the annular baffle plate 3 19 is slidably connected to the inner wall of the lamp body 1;

[0057] The guide movable wind tube 18 is also provided with a plurality of limit slide rails 17;

[0058] A guide sliding ring seat 22 is fixedly installed in the lamp body 1 , and the guide sliding ring seat 22 is slidably connected to the plurality of limiting slide rails 17 .

[0059] A plurality of limit stops 25 are also provided on the inner wall of the lamp body 1, and an elastic column 24 is fixedly mounted on each of the limit stops 25;

[0060] A pressure detector 23 is fixedly mounted on the elastic column 24. When the filter screen 13 is completely exposed to the outside of the lamp body 1, the pressure detector 23 abuts against the end of the limiting slide rail 17, wherein the number of the limiting slide rails 17 and the pressure detector 23 are equal.

[0061] In one embodiment of the present invention, see Figure 4-Figure 8 The guide moving wind tube 18 is fixedly mounted with an annular baffle plate 2 14, and a plurality of air volume detectors 20 are arranged between the annular baffle plate 2 14 and the annular baffle plate 1 9;

[0062] The air volume detector 20 is arranged opposite to the filter screen 2 13, and a power supply unit 21 is also arranged on the air volume detector 20;

[0063] A warning member 8 is fixedly mounted on the lamp body 1 , and the warning member 8 is electrically connected to the air volume detector 20 .

[0064] A plurality of telescopic driving members 12 are fixedly mounted on the inner wall of the detachable air inlet portion 4, and the telescopic driving members 12 are electrically connected to the temperature sensor disposed in the guide moving air cylinder 18;

[0065] The annular baffle plate 14 is provided with a plurality of adsorption buffer parts 15, and the plurality of adsorption buffer parts 15 are respectively arranged opposite to the plurality of telescopic driving members 12;

[0066] When the telescopic driving member 12 is energized and generates a magnetic attraction force on the adsorption buffer portion 15 , the adsorption buffer portion 15 will abut against the telescopic driving member 12 . At this time, the second filter 13 is completely exposed to the outside of the lamp body 1 .

[0067] A plurality of return springs 16 are disposed between the annular baffle plate 14 and the guide sliding ring seat 22 . When the adsorption buffer portion 15 abuts against the telescopic driving member 12 , the return springs 16 are in a stretched state.

[0068] During the use of the lamp body 1, when it is detected that the temperature in the guide moving wind tube 18 reaches the set value, the telescopic driving member 12 will start working, wherein the telescopic driving member 12 can be in the form of an electromagnet or a pneumatic drive, preferably in the form of an electromagnet, which can be powered by the circuit of the lamp body 1. After the electromagnet is energized and generates magnetism, it can produce an adsorption effect on the adsorption buffer portion 15 on the annular baffle plate 14, and pull the annular baffle plate 14 and the guide moving wind tube 18 to move in the direction of the telescopic driving member 12 until the adsorption buffer portion 15 abuts against the end of the telescopic driving member 12, wherein the adsorption buffer portion 15 can be a structure of an iron arc plate. The structure is provided with a sponge or rubber pad at the bottom of the arc plate structure. During this process, the reset spring 16 is gradually in a stretched state (the reset spring 16 is made of a high-temperature resistant alloy spring), so that after the subsequent telescopic drive member 12 is powered off and loses its magnetism, the reset spring 16 pulls the diversion moving air cylinder 18 and the filter screen 2 13 to move in the opposite direction, and finally restores the filter screen 10 to its original position. In addition, during the movement of the diversion moving air cylinder 18, the annular baffle plate 3 19 will slide on the inner wall of the lamp body 1, and the annular baffle plate 3 19 and the inner wall of the lamp body 1 can be connected in a sealed sliding manner to further prevent external dust from entering the lamp body 1.

[0069] In addition, the limiting slide rail 17 on the guide moving wind tube 18 will also slide on the guide sliding ring seat 22, so that the guide moving wind tube 18 can only move in the horizontal direction, but cannot rotate, thereby ensuring the stability of the guide moving wind tube 18 during movement, and the abutment between various components at designated positions to avoid large collisions that may damage the equipment. After the lamp body 1 is completely exposed to the outside of the lamp body 1, the end of the limiting slide rail 17 will abut against the pressure detector 23 and exert a certain pressure on the pressure detector 23. At the same time, the elastic column 24 can be made of rubber to avoid rigid collisions. By detecting the pressure of multiple pressure detectors 23 (using Tekscan FlexiForce A201 pressure sensor, range 0-100N, response time less than 10ms), can determine whether the diversion mobile wind tube 18 has successfully changed the structure connected to the outside, whether it has reached the specified position, and whether it has tilted to reach the specified position (the pressure values ​​detected by multiple pressure detectors 23 are approximately the same, and when they reach the specified value, it indicates normal operation). In the event of an abnormality, the detected data can be directly transmitted to the mobile terminal of the staff to avoid the situation where the heat accumulated in the lamp body 1 cannot be discharged due to the fact that the diversion mobile wind tube 18 has not changed the ventilation state, which eventually leads to equipment failure, thereby further ensuring the smooth operation of the equipment. At the same time, the wind volume detector 20 can be used to detect the wind volume flowing into the filter 13. If the detected flow value tends to be constant and is less than the set value, it is said that The bright filter 10 can also play a part in the circulation, and the blockage is not obvious. At this time, the warning member 8 does not work. Among them, the warning member 8 can be in the form of a buzzer or a flashing light to remind the staff whether it is necessary to dismantle and clean the filter 10 and the filter 2 13, especially for the lamp body 1 used at a high place, so that the staff can obtain the information of the blockage of the filter 10. When the detected flow value is greater than the set value, it means that the filter 10 may be blocked. At this time, the warning member 8 starts working. During use, when the detected flow value fluctuates greatly compared with the set value, it means that the filter 10 and the filter 2 13 may be blocked to a certain extent. Then the warning member 8 starts working, so that the staff can dismantle and clean the filter 10 and the filter 2 13 after the use of the lamp body 1.

[0070] In one embodiment of the present invention, see Figure 1-Figure 3 The lamp body 1 is also provided with a support seat 11, and the number of the support seats 11 is two, and the two support seats 11 are symmetrically distributed on both sides of the lamp body 1;

[0071] Each of the support seats 11 is provided with an angle adjustment portion 6 , and a lamp bracket 7 is mounted on the angle adjustment portion 6 .

[0072] By setting up an angle adjustment part 6, wherein a damping shaft can be used between the angle adjustment part 6 and the lamp bracket 7, the angle between the lamp bracket 7 and the support base 11 can be adjusted, so that the lamp body 1 can irradiate at different angles through the light-emitting part 2 to meet different lighting needs, thereby improving the practicality and flexibility of the equipment.

[0073] Therefore, through the thermal resistance comparison experiment:

[0074] Tested with 1000W LED light source, at an ambient temperature of 25°C, thermal resistance of traditional fixed filter (temperature is 85°C):

[0075]

[0076] The temperature (automatic mode) adopted by the present invention can be reduced from 85° C. to 65° C., and the thermal resistance can be reduced to 0.04° C. / W.

[0077] In addition, according to the LED life formula: Where L0 is the nominal life (50,000 hours), T0 is the conventional mode junction temperature (85°C), and T is 65°C;

[0078] When the junction temperature drops from 85°C to 65°C, the service life is increased from 12,500 hours to 50,000 hours. In addition, it is measured by an anemometer that when filter 10 is blocked to 80%, switching to filter 2 13 can reduce the air volume attenuation rate from 72% to 35%, and the junction temperature rise rate is reduced by 52%.

[0079] It should be noted that in the present invention, unless otherwise clearly specified and limited, the terms "slide", "rotate", "fix", "have" and the like should be understood in a broad sense, for example, it can be a welding connection, a bolt connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A heat dissipation structure for a stage lamp, comprising a lamp body, one end of which is provided with a light emitting portion, characterized in that: Also includes: A detachable air inlet portion, the detachable air inlet portion being detachably mounted on the other end of the lamp body, wherein a flow-guiding movable air cylinder is further inserted into the lamp body, the flow-guiding movable air cylinder is slidably connected to the lamp body, and a fan device for dissipating heat from the light-emitting portion is further arranged in the flow-guiding movable air cylinder; Filter screen 2, wherein the filter screen 2 penetrates the detachable air inlet portion and is detachably connected to the guide movable air cylinder, and an annular baffle plate 1 is further provided at the end of the filter screen 2; and a filter screen 1, wherein the filter screen 1 is fixedly mounted on the annular baffle 1, wherein the filter hole diameter of the filter screen 1 is smaller than the filter hole diameter of the filter screen 2; External force drives the guide moving air duct and drives the second filter to move toward the outside of the lamp body, so that the second filter is completely exposed to the outside of the lamp body. By changing the way the guide moving air duct is connected to the outside structure, the heat dissipation air volume can be adjusted.

2. The heat dissipation structure for stage lighting according to claim 1, characterized in that: The fan device is a variable frequency cooling fan, which is located in the guide moving wind tube and connected to the inner wall of the lamp body; Among them, the variable frequency cooling fan is also arranged close to the light-emitting part, and the variable frequency cooling fan is also electrically connected to the detector in the lamp body, and is used to control the ventilation volume according to the state of the guide moving wind tube being connected to the outside detected by the detector.

3. The heat dissipation structure for stage lighting according to claim 2, characterized in that: The lamp body is also provided with a plurality of heat dissipation fins, and the plurality of heat dissipation fins are arranged around the light-emitting part; The lamp body is also provided with a plurality of air outlets, the air outlets are located between adjacent heat dissipation fins, and the air outlets are also connected to the guide movable wind tube for discharging hot air carrying heat in the lamp body.

4. The heat dissipation structure for stage lighting according to any one of claims 1 to 3, characterized in that: The end of the guide movable wind tube is also fixedly mounted with an annular baffle plate 3, and the annular baffle plate 3 is slidably connected to the inner wall of the lamp body; The guide movable wind tube is also provided with a plurality of limit slide rails; A guide sliding ring seat is fixedly installed in the lamp body, and the guide sliding ring seat is slidably connected to the plurality of limit sliding rails.

5. The heat dissipation structure for stage lighting according to claim 4, characterized in that: A plurality of limit stops are also provided on the inner wall of the lamp body, and an elastic column is fixedly mounted on each of the limit stops; A pressure detector is fixedly mounted on the elastic column. When the filter screen 2 is completely exposed to the outside of the lamp body, the pressure detector abuts against the end of the limiting slide rail, wherein the number of the limiting slide rails is equal to that of the pressure detectors.

6. The heat dissipation structure for stage lighting according to claim 5, characterized in that: The guide movable wind tube is fixedly mounted with an annular baffle plate 2, and a plurality of air volume detectors are arranged between the annular baffle plate 2 and the annular baffle plate 1; Wherein, the air volume detector is arranged opposite to the filter screen 2, and a power supply unit is also arranged on the air volume detector; A warning piece is fixedly mounted on the lamp body, and the warning piece is electrically connected to the air volume detector.

7. The heat dissipation structure for stage lighting according to claim 6, characterized in that: A plurality of telescopic driving members are fixedly mounted on the inner wall of the detachable air inlet portion, and the telescopic driving members are electrically connected to a temperature sensor disposed in the guide movable air cylinder; The annular baffle plate 2 is provided with a plurality of adsorption buffer parts, and the plurality of adsorption buffer parts are respectively arranged opposite to the plurality of telescopic driving members; When the telescopic driving member is energized and generates a magnetic attraction force on the adsorption buffer portion, the adsorption buffer portion will abut against the telescopic driving member. At this time, the second filter is completely exposed to the outside of the lamp body.

8. The heat dissipation structure for stage lighting according to claim 7, characterized in that: A plurality of return springs are arranged between the annular baffle plate 2 and the guide sliding ring seat. When the adsorption buffer portion abuts against the telescopic driving member, the return springs are in a stretched state.

9. The heat dissipation structure for stage lighting according to claim 1 or 3, characterized in that: The lamp body is also provided with a support seat, the number of the support seats is two, and the two support seats are symmetrically distributed on both sides of the lamp body; Each of the support seats is provided with an angle adjustment portion, and a lamp bracket is installed on the angle adjustment portion.

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