A variable air duct cooling system for stage lights

Abstract

The present invention discloses a variable air duct heat dissipation system for stage lights, including a light source and a fan, wherein the tail of the fan is connected to a nozzle, and the nozzle forms an outlet duct for guiding wind, and the wind flow generated by the fan is guided to the light source through the outlet duct in the nozzle; the nozzle is provided with movable blades, and the movable blades are connected to a rotating shaft, and the rotating shaft is connected to a driving mechanism, and the movable blades at least change the direction of part of the air flow in the outlet duct, so that the wind flow guided to the light source is distributed at different positions of the light source. This technical solution changes the outlet direction of the outlet duct, so that the heat at different positions of the light source can be effectively dissipated; by setting a rotating shaft and a motor to drive the movable blades to rotate continuously, it can not only change the cross-sectional size of the air outlet of the outlet duct, but also continuously dissipate heat to different positions of the light source, effectively improving the heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of stage lights, and more particularly to a variable air duct heat dissipation system for stage lights. Background Art

[0002] In the actual application of stage lights, the power of stage lights is usually relatively large. During the operation of the light source, due to the limitations of its own technical characteristics, only a small part of the electrical energy can be converted into visible light, and most of the electrical energy is converted into heat and consumed, causing the light source to generate a large amount of heat during work, which in turn makes the temperature of the light source too high. The heat dissipation system is the core part of the lamp and is directly related to the service life of the light source. Therefore, whether the heat dissipation system can effectively dissipate the heat of the light source plays a vital role in the entire stage light.

[0003] The stage lighting fixtures currently on the market usually have a heat sink on the top of the light source to dissipate heat from the light source. However, dissipating heat only on the top of the light source cannot achieve targeted heat dissipation, and it is easy to cause uneven heat dissipation, so that some parts that urgently need heat dissipation cannot be effectively dissipated. At the same time, the heat dissipation airflow entering the light source is not guided, which will also affect the gathering effect of the heat dissipation airflow, resulting in low utilization rate of the heat dissipation airflow and poor heat dissipation effect.

[0004] In addition, when the lamp head of the existing stage lights is rotating, the angle of the lamp head is constantly changing most of the time, and due to the influence of gravity, the heat flow of the light source mostly flows and gathers upward. Therefore, after each rotation, the heat distribution position of the light source is different, and it is difficult to meet the heat dissipation requirements of the light source by using a nozzle with a fixed air outlet angle. Summary of the invention

[0005] The present invention aims to overcome at least one defect of the above-mentioned prior art and provides a variable air duct heat dissipation system for stage lights, which is used to solve the problem that the heat distribution of the light source of the stage lights is uneven due to the rotation of the lamp head and the heat dissipation system cannot effectively and evenly dissipate the heat. By changing the direction of the airflow, the heat of the light source is effectively dissipated.

[0006] The technical solution adopted by the present invention is a variable air duct heat dissipation system for stage lights, including a light source and a fan, wherein the tail of the fan is connected to a nozzle, and the nozzle forms an outlet duct for guiding air, and the wind generated by the fan is guided to the light source through the outlet duct in the nozzle; the nozzle is provided with movable blades, and the movable blades are connected to a rotating shaft, and the rotating shaft is connected to a driving mechanism, and the movable blades at least change the direction of part of the airflow in the outlet duct, so that the wind flow guided to the light source is distributed at different positions of the light source.

[0007] In the present technical solution, a movable blade is arranged in the air outlet duct, and the rotating shaft is connected to one end of the movable blade. During the air outlet process, the movable blade is rotated by the rotating shaft, thereby changing the cross-sectional size of the air outlet duct during air outlet. It can not only adjust the wind force of the wind flow directed to the light source, but also continuously change the direction of the wind flow, thereby directing the wind flow to the heat concentrated part of the light source, thereby meeting the heat dissipation requirements of the rotating stage light.

[0008] One end of the rotating shaft is connected to a motor, and the motor drives the rotating shaft to rotate, thereby driving the movable blades to rotate.

[0009] Furthermore, a side wall of the air nozzle is formed by the movable blade.

[0010] In the present technical solution, one side wall of the wind nozzle serves as the side wall of the wind nozzle and also as a movable blade. It deflects under the drive of the driving mechanism, thereby changing the direction and guiding the wind flow to the heat concentration area of ​​the light source to effectively dissipate heat. It also has the beneficial effects of simple structure, convenience and cost saving.

[0011] Furthermore, the movable blades are arranged in the space of the air outlet duct to divide the airflow in the air outlet duct into two streams.

[0012] This technical solution can achieve up and down air outlet or left and right air outlet by dividing the airflow in the air outlet duct into two streams.

[0013] In the case where the hot air flow of the rotating stage lights always flows upward, the movable blades of the technical solution are arranged in the air outlet duct and divide the air flow into two streams, one of which can be set to blow toward the top of the light source to accelerate the heat dissipation of the hot air flow at the top of the light source to avoid excessive temperature at the top of the light source, and the other stream can change the outlet wind direction of the air outlet duct at any time according to the changes in the heat accumulation part of the light source to dissipate heat in time.

[0014] Furthermore, the movable blade has folding pieces on both sides, and the rotating shaft is fixedly connected to the folding pieces.

[0015] The movable blade is connected to the rotating shaft via a folding piece, and the folding piece facilitates the positioning and installation between the movable blade and the rotating shaft.

[0016] Furthermore, the rotating shaft is supported by at least one supporting block, and a bearing is provided at the connection between the supporting block and the rotating shaft.

[0017] The technical solution supports the rotating shaft by providing a support block to prevent the force arm from being too long and bending in the air; and provides a bearing at the connection between the support block and the rotating shaft to make the rotation smoother.

[0018] Among them, the driving mechanism of the present technical solution is not limited to the form of belt rotation, and its driving method is not unique. For example, the rotation of the rotating shaft can also be achieved through gear transmission or direct motor drive.

[0019] Furthermore, the rotation center line of the movable blade is perpendicular or parallel to the direction of the light beam emitted by the light source.

[0020] When the rotation center line of the movable blade is parallel to the direction of the light beam emitted by the light source, left and right wind sweeping can be achieved; when the rotation center line of the movable blade is perpendicular to the direction of the light beam emitted by the light source, up and down wind sweeping can be achieved.

[0021] Furthermore, the tip of the movable blade is close to the air outlet of the air nozzle and is bent toward the light source.

[0022] The bending of the movable blades can make the wind flow blow toward the light source more accurately.

[0023] Furthermore, the air nozzle is connected to the fan via an air guide duct, the air guide duct has a bending portion, an air guide plate is provided in the air guide duct at the position of the bending portion, and the shape of the air guide plate matches the bending curvature of the bending portion.

[0024] This technical solution arranges air guide plates, which can effectively guide the wind flow in the air guide duct, ensuring uniform air flow when the air flow is directed from the air guide duct to the air nozzle, and avoiding the air flow from converging at the end with a longer arc length when the air flow makes a sharp turn, so that the air flow entering the air outlet duct is more evenly distributed on the left and right sides.

[0025] Furthermore, fixing plates are protruded from both sides of the air guide plate, and the air guide duct is provided with fixing slots corresponding to the fixing plates, and the air guide plate is fixed in the air guide duct through the cooperation between the fixing plates and the fixing slots.

[0026] The technical solution provides a fixing plate on the air guide plate and a fixing slot hole on the air guide duct. The fixing slot hole can play a positioning role to fix the air guide plate on the air guide duct, and has the beneficial effects of simple structure and easy installation.

[0027] Furthermore, the air guide plate is bent around an axis, and the rotation center line of the movable blade is perpendicular to the axis of the air guide plate, so as to divide the airflow from two perpendicular directions to avoid uneven distribution of airflow intensity.

[0028] Furthermore, the driving mechanism includes a driving wheel and a driven wheel, the driven wheel is fixedly connected to the rotating shaft, and the driving wheel drives the driven wheel to rotate through a synchronous belt.

[0029] In this technical solution, in order to arrange the space reasonably, the driving wheel drives the driven wheel to rotate through the synchronous belt, and then drives the rotating shaft to rotate. By rotating the rotating shaft, the movable blades are driven to rotate.

[0030] Furthermore, at least two groups of fans are included, the tails of the two groups of fans are connected with air nozzles, movable blades are arranged in the air nozzles, and the two groups of fans are independent of each other and controlled separately.

[0031] Furthermore, a reflective cup is disposed outside the light source, and a notch is disposed on the reflective cup, and the air outlet of the air nozzle is in close contact with the notch of the reflective cup.

[0032] The air outlet of the air nozzle of the technical solution is in close contact with the notch of the reflective cup, which can effectively prevent air leakage from the air nozzle; compared with the technology of movable design of air nozzles in the prior art, the technical solution effectively solves the technical problem of air leakage and makes effective use of wind flow.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] This technical solution changes the direction of air outlet by setting movable blades in the air nozzle, so that the heat at different positions of the light source can be effectively dissipated; by setting a rotating shaft and a motor to drive the movable blades to rotate continuously, it can not only change the cross-sectional size of the air outlet of the air outlet duct, but also continuously dissipate heat to different positions of the light source, effectively improving the heat dissipation effect; by setting air guide plates in the air guide duct of the fan, the air outlet can be more uniform when the airflow is guided from the air guide duct to the air nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the present invention.

[0036] Figure 2 It is a schematic diagram of the structure after splitting of the present invention.

[0037] Figure 3 It is a schematic diagram of the structure of the rotating shaft and the wind nozzle part.

[0038] Figure 4 It is a schematic diagram of the cross-sectional structure of the movable blade in the wind nozzle.

[0039] Figure 5 It is a schematic diagram of the structure after the driving mechanism is connected to the rotating shaft.

[0040] Figure 6 This is a top view of the air guide vanes installed in the air guide duct of the fan.

[0041] Figure 7 This is a schematic diagram of the structure after the air guide duct and the air guide plate are separated.

[0042] Figure 8 It is a structural schematic diagram of the air guide piece.

[0043] Fig. 9 This is a schematic diagram of the air outlet state of the air nozzle of Example 1.

[0044] Fig.10 It is a cross-sectional schematic diagram of the air outlet state of the air nozzle of Example 1.

[0045] Fig.11 It is a schematic diagram of the cross-sectional structure of the present invention. DETAILED DESCRIPTION

[0046] The drawings of the present invention are only for illustrative purposes and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0047] Example 1

[0048] like Figure 1 and Figure 2 As shown, a variable air duct heat dissipation system for a stage light includes a light source 100 and a fan 200, wherein the tail of the fan 200 is connected with a nozzle 300, and the nozzle 300 forms an outlet duct for guiding air, and the wind flow generated by the fan 200 is guided to the light source 100 through the outlet duct in the nozzle 300; the nozzle 300 is provided with movable blades 310, and the movable blades 310 are connected with a rotating shaft 320, and the rotating shaft 320 is connected to a driving mechanism 330, and the movable blades 310 at least change the direction of part of the air flow in the outlet duct, so that the wind flow guided to the light source 100 is distributed at different positions of the light source 100.

[0049] like Figure 1 , Figure 3 and Figure 4 As shown, in the present technical solution, a movable blade 310 is arranged in the air outlet duct, and the rotating shaft 320 is connected to one end of the movable blade 310. During the air outlet process, the movable blade 310 is rotated by the rotating shaft 320, thereby changing the cross-sectional size of the air outlet duct during air outlet, which can not only adjust the wind force of the wind flow directed to the light source 100, but also continuously change the direction of the air outlet, thereby directing the wind flow to the heat concentrated part of the light source 100, thereby meeting the heat dissipation requirements of the rotating stage light.

[0050] like Figure 5 As shown, one end of the rotating shaft 320 is connected to a motor 340 , and the rotating shaft 320 is driven to rotate by the motor 340 , thereby driving the movable blade 310 to rotate.

[0051] like Figure 1 , Fig. 9 and Fig.10As shown, the movable blade 310 is arranged in the space of the air outlet duct to divide the air flow in the air outlet duct into two streams.

[0052] This technical solution can achieve upward and downward air outlet by dividing the airflow in the air outlet duct into two streams.

[0053] In the case where the hot air flow of the rotating stage light always flows upward, the movable blades 310 of the present technical solution are arranged in the air outlet duct and divide the air flow into two streams, one of which can be arranged to blow toward the top of the light source 100 to accelerate the heat dissipation of the hot air flow at the top of the light source 100 and avoid excessive temperature at the top of the light source 100, and the other stream can change the outlet wind direction of the air outlet duct at any time according to the changes in the heat accumulation part of the light source 100 to dissipate heat in time.

[0054] The movable blade 310 has folding pieces on both sides, and the rotating shaft 320 is fixedly connected to the folding pieces.

[0055] The movable blade 310 is connected to the rotating shaft 320 via a folding piece, and the folding piece facilitates the positioning and installation between the movable blade 310 and the rotating shaft 320.

[0056] like Figure 5 As shown, the rotating shaft 320 is supported by at least one supporting block 321, and a bearing is provided at the connection between the supporting block 321 and the rotating shaft.

[0057] The technical solution supports the rotating shaft by providing a support block 321 to prevent the force arm from being too long and bending in the air; and provides a bearing at the connection between the support block 321 and the rotating shaft 320 to make the rotation smoother.

[0058] like Fig.11 As shown, the rotation center line of the movable blade 310 is perpendicular to the direction of the light beam emitted by the light source 100.

[0059] When the rotation center line of the movable blade 310 is perpendicular to the direction of the light beam emitted by the light source 100, up and down wind sweeping can be achieved.

[0060] like Figure 4 As shown, the end of the movable blade 310 is close to the air outlet of the air nozzle 300 and is bent toward the light source 100 .

[0061] The bending of the movable blades 310 can make the wind flow blow toward the light source 100 more accurately.

[0062] like Figure 6 and Figure 7As shown, the air nozzle 300 is connected to the fan 200 through an air guide duct 210, and the air guide duct 210 has a bending portion. An air guide plate 220 is provided in the air guide duct 210 at the position of the bending portion, and the shape of the air guide plate 220 matches the bending curvature of the bending portion.

[0063] The present technical solution sets an air guide piece 220 which can effectively guide the wind flow in the air guide duct 210, ensuring uniform air flow when the air flow is directed from the air guide duct 210 to the air nozzle 300, and preventing the air flow from converging at the end with a longer arc length when the air flow makes a sharp turn, thereby making the air flow entering the air outlet duct more evenly distributed on both sides.

[0064] like Figure 7 and Figure 8 As shown, fixing plates 221 protrude from both sides of the air guide plate 220, and the air guide duct 210 is provided with fixing slots 211 corresponding to the fixing plates 221, and the air guide plate 220 is fixed in the air guide duct 210 through the cooperation between the fixing plates 221 and the fixing slots 211.

[0065] The technical solution provides a fixing plate 221 on the air guide plate 220 and a fixing slot 211 on the air guide duct 210. The fixing slot 211 can play a positioning role to fix the air guide plate 220 on the air guide duct 210, and has the beneficial effects of simple structure and easy installation.

[0066] The air guide plate 220 is bent around an axis, and the rotation centerline of the movable blade 310 is perpendicular to the axis of the air guide plate 220. The airflow is divided from two perpendicular directions to avoid uneven distribution of airflow intensity.

[0067] The driving mechanism 330 includes a driving wheel and a driven wheel. The driven wheel is fixedly connected to the rotating shaft 320 . The driving wheel drives the driven wheel to rotate via a synchronous belt.

[0068] In this technical solution, in order to arrange the space reasonably, the driving wheel drives the driven wheel to rotate through the synchronous belt, thereby driving the rotating shaft 320 to rotate. By rotating the rotating shaft 320, the movable blade 310 is driven to rotate.

[0069] like Figure 1 As shown, the heat dissipation system includes two groups of fans 200, and the tails of the two groups of fans 200 are connected to the air nozzles 300, and the air nozzles 300 are provided with movable blades 310, and the two groups of fans 200 are independent of each other and controlled separately.

[0070] In order to speed up the heat dissipation of the light source 100, two sets of fans 200 are respectively arranged on the front and rear sides of the light source 100, and the two sets of fans 200 are independent of each other and controlled separately. A set of air nozzles 300 is correspondingly provided for the two sets of fans 200, and the movable blades 310 in the two sets of air nozzles 300 are also independent of each other and controlled separately; the technical solution can start one set of fans 200 or start both sets of fans 200 at the same time according to different needs, and the movable blades 310 in the air nozzles 300 can also be in a rotating or fixed working state according to different needs to meet different heat dissipation requirements.

[0071] like Figure 2 As shown, the light source 100 is provided with a reflective cup 400 outside, and the reflective cup 400 is provided with a notch, and the air outlet of the air nozzle 300 is in close contact with the notch of the reflective cup 400 .

[0072] The air outlet of the air nozzle 300 of the technical solution is in close contact with the notch of the reflective cup 400, which can effectively prevent air leakage of the air nozzle 300; compared with the technology of the movable design of the air nozzle 300 in the prior art, the technical solution effectively solves the technical problem of air leakage and makes effective use of the wind flow.

[0073] like Figure 5 As shown, it also includes a light source cover 500 for installing and protecting the light source 100 and the reflective cup 400, the driving mechanism 330 is installed on the outer side of the light source cover 500, the side wall of the light source cover 500 is provided with a notch for fitting and installing the air nozzle 300, the rotating shaft 320 is installed between the air nozzle 300 and the driving mechanism 330, and the supporting block 321 is installed on the inner wall of the light source cover 500.

[0074] Example 2

[0075] The difference between this embodiment and embodiment 1 is that one side wall of the air nozzle 300 is formed by the movable blade 310. The upper side wall of the air nozzle 300 forms an air guide surface, which sets the direction of the airflow in the air outlet duct toward the required heat dissipation direction, thereby realizing rapid heat dissipation of the lamp.

[0076] In the present technical solution, one side wall of the air nozzle 300 serves as the side wall of the air nozzle 300 and also as the movable blade 310. When driven by the driving mechanism, it deflects and changes the direction, thereby directing the wind flow to the heat-concentrated part of the light source 100 to effectively dissipate heat while having the beneficial effects of simple structure, convenience and cost saving.

[0077] This technical solution changes the air outlet direction of the air outlet duct by directly setting a side wall of the air nozzle 300 as an air guide surface, so as to achieve an arbitrary change in the angle of the air outlet direction to achieve a better air outlet and heat dissipation effect.

[0078] Example 3

[0079] The difference between this embodiment and the first embodiment is that the rotation center line of the movable blade 310 is parallel to the direction of the light beam emitted by the light source 100 .

[0080] When the rotation center line of the movable blade 310 is parallel to the direction of the light beam emitted by the light source 100, left and right wind sweeping can be achieved.

[0081] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A variable air duct heat dissipation system for stage lights, characterized in that: The invention comprises a light source and a fan, wherein the tail of the fan is connected with a nozzle, the nozzle forms an outlet duct for guiding wind, and the wind flow generated by the fan is guided to the light source through the outlet duct in the nozzle; the nozzle is provided with movable blades, the movable blades are connected with a rotating shaft, the rotating shaft is connected with a driving mechanism, the movable blades are arranged in the space of the outlet duct, and the air flow in the outlet duct is divided into two streams, so that the wind flow guided to the light source is distributed at different positions of the light source; The rotation center line of the movable blade is perpendicular or parallel to the direction of the light beam emitted by the light source; The air nozzle is connected to the fan through an air guide duct, the air guide duct has a bending portion, and an air guide plate is arranged in the air guide duct at the position of the bending portion, and the shape of the air guide plate matches the bending curvature of the bending portion; The air guide plate is bent around an axis, and the rotation center line of the movable blade is perpendicular to the axis of the air guide plate.

2. A variable air duct heat dissipation system for stage lights according to claim 1, characterized in that: A side wall of the air nozzle is formed by the movable blades.

3. The variable air duct heat dissipation system for stage lights according to claim 1, characterized in that: The movable blade has folding pieces on both sides, and the rotating shaft is fixedly connected to the folding pieces.

4. The variable air duct heat dissipation system for stage lights according to claim 1, characterized in that: The rotating shaft is supported by at least one supporting block, and a bearing is provided at the connection between the supporting block and the rotating shaft.

5. The variable air duct heat dissipation system for stage lights according to claim 1, characterized in that: The end of the movable blade is close to the air outlet of the air nozzle and is bent toward the light source.

6. The variable air duct heat dissipation system for stage lights according to claim 1, characterized in that: Fixing plates are protruded from both sides of the air guide plate, and the air guide duct is provided with fixing slots corresponding to the fixing plates. The air guide plate is fixed in the air guide duct through the cooperation between the fixing plates and the fixing slots.

7. The variable air duct heat dissipation system for stage lights according to claim 1, characterized in that: The driving mechanism comprises a driving wheel and a driven wheel, wherein the driven wheel is fixedly connected to the rotating shaft, and the driving wheel drives the driven wheel to rotate via a synchronous belt.

8. The variable air duct heat dissipation system for stage lights according to claim 1, characterized in that: At least two groups of fans are included, the tails of the two groups of fans are connected with air nozzles, movable blades are arranged in the air nozzles, and the two groups of fans are independent of each other and controlled separately.

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