Stage lamp and heat dissipation device of stage lamp

Abstract

The application provides a stage lamp and a heat dissipation device of the stage lamp, and the heat dissipation device mainly comprises a heat dissipation opening, a suction pump, a light source, a filter screen, a first isolation plate, a control module, a first air equalizing pipe network, an annular air equalizing cavity and an air outlet groove; when heat dissipation of the inside of the lampshade is needed, the suction pump is started, and the annular air equalizing cavity is alternately ventilated, so that the two air outlet grooves are alternately ventilated; in this process, the gas in the inside of the lampshade with heat is sucked out through the suction pump and flows out from the air outlet groove, and the gas after flowing out from the air outlet groove flows along the outer side wall of the filter screen, and the gas blows away the dust on the outer surface of the filter screen in the flowing process; so that the dust in the filter screen is blown away; therefore, the two filter screens are alternately cleaned in the heat dissipation process; the accumulation of dust on the filter screen is effectively prevented, the ventilation efficiency is prevented from being reduced, and the overall heat dissipation performance is prevented from being affected; and the heat damage of the stage lamp is avoided.

Description

Technical Field

[0001] This invention relates to the field of stage lighting technology, specifically to a stage light and a heat dissipation device for the stage light. Background Technology

[0002] Stage lighting fixtures used in the field of stage lighting typically have high power. Therefore, during operation, some electrical energy is converted into visible light, while the rest is consumed as heat, infrared rays, ultraviolet rays, etc. due to electrical heating. This results in the light source frequently generating a large amount of heat during operation. Excessive heat can cause thermal damage to the control circuit inside the stage light, thereby affecting the normal use of the stage light.

[0003] Therefore, to protect stage lights from heat damage, cooling devices are typically installed on them to dissipate heat. Common cooling devices usually use fans to dissipate heat. To ensure normal airflow and exchange of air between the inside and outside of the stage light, air inlets and outlets are provided. To prevent external dust from entering the stage light through the air inlet and affecting the internal circuitry, a dust filter is usually installed at the air inlet. However, after long-term use, dust can easily accumulate on the dust filter, leading to reduced ventilation efficiency and affecting overall heat dissipation performance; thus, the stage light may be damaged by heat. Therefore, to avoid stage lights being damaged by heat due to dust accumulation, a heat dissipation device for stage lights that is easy to clean is needed. Summary of the Invention

[0004] The purpose of this invention is to provide a heat dissipation device for stage lights that does not have at least one of the disadvantages mentioned above.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a heat dissipation device for a stage lamp, comprising two heat dissipation vents disposed on the side wall of the lampshade and an air pump disposed outside the lampshade. The air inlet of the air pump is connected to the end of the lampshade where the light source is located. A filter screen is disposed on the heat dissipation vents. A first isolation plate is fixedly connected to the end of the lampshade, the first isolation plate isolating the two heat dissipation vents. A control module for controlling the light source and the air pump is installed on the end of the first isolation plate near the light source. The air outlet of the air pump is connected to two annular air equalization chambers through a first air equalization pipe network. The annular air equalization chambers are fixedly connected to the inner wall of the lampshade near the heat dissipation vents. The two annular air equalization chambers are isolated by the first isolation plate. Each of the two annular air equalization chambers is provided with an air outlet groove aligned with the filter screen. The two annular gas equalization chambers alternately ventilate, and the gas flows along the outer wall of the filter screen after exiting the gas outlet groove, and blows away the dust on the surface of the filter screen during the flow.

[0006] Furthermore, the end of the first isolation plate is aligned with the end of the filter screen, and the height of the first isolation plate is greater than 1.5 times the height of the filter screen.

[0007] Furthermore, a mounting plate is fixedly connected to the end of the first isolation plate, and a ventilation gap is provided between the mounting plate and the inner wall of the lampshade; the control module is mounted on the mounting plate.

[0008] Furthermore, the outlet of the air pump is connected to an air extraction chamber through a second air distribution network. The air extraction chamber is installed at the end of the lampshade near the light source. The lampshade has a conical reflector inside. The air extraction chamber has several inclined holes. The axis of the inclined holes is parallel to the generatrix of the conical reflector, and the inclined holes are located between the conical reflector and the inner wall of the lampshade.

[0009] Furthermore, both the first and second gas equalization pipe networks are stainless steel protective pipe networks. The stainless steel protective pipes are fixed to the surface of the lampshade by connecting rods. The air inlet of the air pump is connected to the first gas equalization pipe network through an air inlet hose, and the air outlet of the air pump is connected to the second gas equalization pipe network through an air outlet hose.

[0010] Furthermore, a wind guide shroud is fixed to the end of the lampshade where the heat dissipation vent is located. The interior of the wind guide shroud is divided into two guide cavities by a second partition plate. The guide cavities are aligned with the heat dissipation vent. Gas comes out from one of the air outlet slots and flows along the outer wall of one of the filters before entering one of the guide cavities.

[0011] Furthermore, a conical air guide ring plate is fixedly connected to one end of the guide cavity near the heat dissipation port. There is an air inlet gap between the conical air guide ring plate connected to the guide cavity and the filter screen. The width of the air inlet gap is more than three times the width of the air outlet groove.

[0012] Furthermore, the air guide shroud is a conical shroud, and the end of the conical shroud opposite to the heat dissipation vent is connected to a transition pipe. The second isolation plate divides the transition pipe into two transition chambers. A rotating rod driven by a motor is rotatably connected inside the transition pipe. The motor is installed outside the transition pipe. The rotating rod is provided with two mutually perpendicular isolation doors for sealing one of the transition chambers.

[0013] Furthermore, a connecting hose is connected to the transition pipe, and one end of the connecting hose away from the transition pipe is connected to the middle exhaust assembly. The middle heat dissipation assembly is installed in the middle position between two adjacent lamp covers. The middle heat dissipation assembly is used to transfer hot air from the vicinity of the lamp cover to a position away from the lamp cover, thereby preventing the air near the lamp cover from heating up and affecting the heat dissipation inside the lamp cover.

[0014] The present invention also discloses a stage lamp, including a lampshade, a fixing plate, a bracket, and the above-mentioned heat dissipation device for the stage lamp. The fixing plate is connected to the top of the bracket via a rotating assembly. The rotating shaft of the lampshade is rotatably connected to the support rod of the bracket. The side wall of the support rod is provided with a driving component for driving the rotating shaft to rotate. The air pump is installed on the bracket.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: When heat dissipation is required inside the lampshade, the air pump is activated, and the annular air distribution chamber is alternately ventilated, thereby causing the two air outlet slots to alternately release air. During this process, the gas inside the lampshade carrying heat is extracted by the air pump and flows out from the air outlet slots. The gas coming out of the air outlet slots flows along the outer wall of the filter screen, and during the flow, the gas blows away the dust on the outer surface of the filter screen, thus blowing away the dust in the filter screen. Therefore, the present invention alternately cleans the two filters during the heat dissipation process, effectively preventing dust accumulation on the filter screen, which would lead to a decrease in ventilation efficiency and thus affect the overall heat dissipation performance; and avoiding thermal damage to the stage light. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a longitudinal sectional view of the lampshade; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point B in the middle; Figure 5 This is a schematic diagram of the horizontal cross-section of the lampshade.

[0018] The components include: 1. Air pump; 2. Bracket; 3. Fixing plate; 4. Second air distribution network; 5. Lamp cover; 6. First air distribution network; 7. Transition pipe; 8. Motor; 9. Air guide hood; 10. Conical air guide ring plate; 11. Filter screen; 12. Air extraction chamber; 13. Baffle; 14. Reflector cup; 15. Inclined hole; 16. Light source; 17. Control module; 18. Annular air distribution chamber; 19. First isolation plate; 20. Mounting plate; 21. Air outlet groove; 22. Air inlet gap; 23. Rotating rod; 24. Second isolation plate; 25. Isolation door. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] Example: To protect stage lights from heat damage, cooling devices are typically installed to dissipate heat. Common cooling devices usually use fans. To ensure proper airflow and exchange of air between the inside and outside of the stage light, air inlets and outlets are provided. To prevent external dust from entering the stage light through the air inlet and affecting the internal circuitry, a dust filter is usually installed at the air inlet. However, over time, dust accumulates on the filter, reducing ventilation efficiency and affecting overall heat dissipation performance, thus leading to heat damage to the stage light. Therefore, to prevent stage lights from being damaged by heat due to dust accumulation... Based on the above issues, please refer to Figures 1-5 A heat dissipation device for a stage lamp includes two heat dissipation vents on the side wall of a lampshade 5 and an air pump 1 located outside the lampshade 5. The air inlet of the air pump 1 is connected to the end of the lampshade 5 where the light source 16 is located. A filter 11 is provided on the heat dissipation vents. The filter 11 can be a common dustproof mesh to prevent dust from entering the interior of the lampshade 5. A first isolation plate 19 is fixedly connected to the end of the lampshade 5, which isolates the two heat dissipation vents. A control module 17 for controlling the light source and the air pump 1 is installed on the end of the first isolation plate 19 near the light source. The air outlet of the air pump is connected to two annular air equalization chambers 18 through a first air equalization pipe network 6. The annular air equalization chambers 18 are fixedly connected to the inner wall of the lampshade 5 near the heat dissipation vents. The two annular air equalization chambers 18 are isolated by the first isolation plate 19. Each of the two annular air equalization chambers 18 is provided with an air outlet groove 21 aligned with the filter 11. Two annular air equalization chambers 18 alternately ventilate, and the gas flows along the outer wall of the filter screen 11 after exiting the air outlet 21, blowing away the dust on the surface of the filter screen 11 during the flow. The annular air equalization chamber 18 is a semi-circular fan-shaped air equalization chamber that blows away only one filter screen 11. The alternating ventilation of the two annular air equalization chambers 18 can be achieved by alternately opening two valves in the pipeline. The control module 17 consists of common control circuit boards, wires, temperature sensors, and related electronic components, which will not be described in detail here.

[0021] Therefore, when heat dissipation is needed inside the lampshade 5, the vacuum pump 1 is activated, and the annular air distribution chamber 18 is alternately ventilated, causing the two air outlets 21 to alternately discharge air. During this process, the gas inside the lampshade 5, carrying heat, is drawn out by the vacuum pump 1 and flows out from the air outlets 21. The gas exiting the air outlets 21 flows along the outer wall of the filter screen 11, blowing away dust from the outer surface of the filter screen 11 during its flow. Simultaneously, a negative pressure is generated, drawing the hotter gas inside the lampshade 5 out through the heat dissipation vent, further... While improving heat dissipation efficiency, the filter 11 is backwashed, further blowing away the dust in the filter 11; while the other heat dissipation port is not being purged at this time, the cooler outside air will flow into the lampshade 5 through the heat dissipation port to achieve cooling; the two filters 11 are purged by the alternating air outlet 21; therefore, the present invention cleans the two filters 11 alternately during the heat dissipation process; effectively preventing dust accumulation on the filter 11, which would lead to a decrease in ventilation efficiency and thus affect the overall heat dissipation performance; and avoiding thermal damage to the stage lamp.

[0022] In one embodiment, the end of the first isolation plate 19 is aligned with the end of the filter screen 11, and the height of the first isolation plate 19 is greater than 1.5 times the height of the filter screen 11. The end of the first isolation plate 19 is fixedly connected to a mounting plate 20, and a ventilation gap is provided between the mounting plate 20 and the inner wall of the lampshade 5. The control module 17 is mounted on the mounting plate 20, thereby effectively reducing the mutual influence of airflow between the two heat dissipation vents. Through experiments, it is known that when the height of the first isolation plate 19 is less than 1.5 times the height of the filter screen 11, the heat dissipation vent that generates negative pressure will suck away the airflow flowing in from the outside in the heat dissipation vent that does not generate negative pressure, thereby reducing the flow of external airflow on the control module 17 and the light source 16, thereby reducing the internal heat dissipation quality. Therefore, in this embodiment, the height of the first isolation plate 19 is greater than 1.5 times the height of the filter screen 11, preferably 2 times. In addition, baffles 13 are provided on both sides of the two heat dissipation vents to further reduce the influence of airflow between the two heat dissipation vents.

[0023] In one embodiment, the outlet of the air pump 1 is connected to an air extraction chamber 12 via a second air distribution network 4. The air extraction chamber 12 is installed at the end of the lamp cover 5 near the light source. The lamp cover 5 has a conical reflector cup 14 inside. The air extraction chamber 12 has several inclined holes 15. The axis of the inclined holes 15 is parallel to the generatrix of the conical reflector cup 14, and the inclined holes 15 are located between the conical reflector cup 14 and the inner wall of the lamp cover 5, thereby realizing heat exchange with the reflector cup 14, thereby reducing the temperature of the reflector cup 14 and preventing heat accumulation inside the lamp cover 5. In addition, in other embodiments, the inclined holes 15 can be replaced with inclined slots to improve ventilation efficiency.

[0024] In one embodiment, both the first gas equalization network 6 and the second gas equalization network 4 are stainless steel protective networks, which provide protection while allowing gas to circulate. The stainless steel protective network is fixed to the surface of the lampshade 5 by a connecting rod. The air inlet of the vacuum pump 1 is connected to the first gas equalization network 6 through an air inlet hose, and the air outlet of the vacuum pump 1 is connected to the second gas equalization network 4 through an air outlet hose, thereby facilitating the adjustment of the angle of the lampshade 5. In addition, both the first gas equalization network 6 and the second gas equalization network 4 can be in the form of a tower-shaped network, thereby achieving uniform extraction of gas from inside the lampshade 5.

[0025] In one embodiment, a guide shroud 9 is fixedly connected to the end of the lampshade 5 with a heat dissipation vent. The interior of the guide shroud 9 is divided into two guide chambers by a second partition plate 24. The guide chambers are aligned with the heat dissipation vent. Gas exits from an outlet groove 21 and flows along the outer wall of a filter screen 11 before entering a guide chamber. This facilitates the concentrated discharge of gas containing dust and reduces the probability of blown-out dust being re-inhaled into the other heat dissipation vent. At the same time, it can concentrate the discharge of high-temperature gas in one direction, preventing the air near the lampshade 5 from heating up too quickly and affecting the heat dissipation of the lampshade 5. A conical guide ring plate 10 is fixedly connected to one end of the guide chamber near the heat dissipation vent. There is an air inlet gap 22 between the conical guide ring plate 10 connected to the guide chamber and the filter screen 11. The width of the air inlet gap 22 is more than three times the width of the outlet groove 21, thereby ensuring that the gas exiting from the outlet groove 21 can accurately flow into the guide chamber, thus ensuring the concentrated discharge of gas.

[0026] In one embodiment, the air guide shroud 9 is a conical shroud. The end of the conical shroud facing away from the heat dissipation vent is connected to a transition pipe 7. A second isolation plate 24 divides the transition pipe 7 into two transition chambers. A rotating rod 23 driven by a motor 8 is rotatably connected inside the transition pipe 7. The motor 8 is mounted outside the transition pipe 7. The rotating rod 23 has two mutually perpendicular isolation doors 25 used to block one of the transition chambers, thus making the two transition chambers connected to the two heat dissipation vents independent. While the two annular equalization chambers 18 alternately ventilate, the rotating rod 23 alternately rotates, thereby achieving alternating blocking of the two transition chambers (the transition chamber aligned with the ventilating annular equalization chamber 18 opens). This prevents the backflow of high-temperature gas and gas with a high dust content. Furthermore... A connecting hose is connected to the transition pipe 7. The end of the connecting hose away from the transition pipe 7 is connected to the middle exhaust assembly. The middle heat dissipation assembly is installed in the middle position between two adjacent lamp covers 5. The middle heat dissipation assembly is used to transfer hot air from the vicinity of the lamp cover 5 to a position away from the lamp cover 5, thereby preventing the air near the lamp cover 5 from heating up and affecting the heat dissipation inside the lamp cover 5. The middle exhaust assembly can be in the form of an exhaust fan or an exhaust pipe, thereby removing high-temperature gas with a high dust content, thereby reducing dust and heat near the lamp cover 5. Specifically, for example, for lamp covers 5 installed indoors, the exhaust fan or exhaust channel connects the indoor and outdoor environments, thereby removing high-temperature gas with a high dust content from the indoor environment, further improving the cooling effect of the lamp cover 5.

[0027] The present invention also discloses a stage light, including a lampshade 5, a fixing plate 3, a bracket 2, and the aforementioned heat dissipation device for the stage light. The fixing plate 3 is connected to the top of the bracket 2 via a rotating assembly. The rotating shaft of the lampshade 5 is rotatably connected to the support rod of the bracket 2. The side wall of the support rod is provided with a driving component for driving the rotating shaft to rotate. An air pump 1 is installed on the bracket 2. The rotating assembly and the driving component can both be rotating components, such as a drive motor or a rotary cylinder, thereby realizing the adjustment of different angles of the stage light.

[0028] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A heat dissipation device for a stage lamp, characterized in that, The lamp includes two heat dissipation vents on the side wall of the lamp cover (5) and an air pump (1) located outside the lamp cover (5). The air inlet of the air pump (1) is connected to the end of the lamp cover (5) where the light source (16) is located. A filter screen (11) is provided on the heat dissipation vents. A first isolation plate (19) is fixed to the end of the lamp cover (5). The first isolation plate (19) isolates the two heat dissipation vents. A control device is installed on the end of the first isolation plate (19) near the light source (16). The control module (17) of the light source (16) and the air pump (1); the air outlet of the air pump (1) is connected to two annular air equalization chambers (18) through the second air equalization network (4), and the annular air equalization chambers (18) are fixed to the inner wall of the lamp cover (5) near the heat dissipation port; the two annular air equalization chambers (18) are separated by the first isolation plate (19), and each of the two annular air equalization chambers (18) is provided with an air outlet groove (21) aligned with the filter screen (11); The two annular equalization chambers (18) alternately ventilate, and the gas flows along the outer wall of the filter screen (11) after it comes out of the air outlet (21), and blows away the dust on the surface of the filter screen (11) during the flow.

2. The heat dissipation device for the stage lamp according to claim 1, characterized in that, The end of the first isolation plate (19) is aligned with the end of the filter screen (11), and the height dimension of the first isolation plate (19) is greater than 1.5 times the height dimension of the filter screen (11).

3. The heat dissipation device for the stage lamp according to claim 1, characterized in that, The first isolation plate (19) is fixedly connected to the end of the mounting plate (20), and a ventilation gap is provided between the mounting plate (20) and the inner wall of the lamp cover (5); the control module (17) is installed on the mounting plate (20).

4. The heat dissipation device for the stage lamp according to claim 1, characterized in that, The air intake end of the air pump (1) is connected to the air extraction chamber (12) through the first air distribution network (6). The air extraction chamber (12) is installed at the end of the lampshade (5) near the light source (16). The lampshade (5) is provided with a conical reflector (14) inside. The air extraction chamber (12) is provided with a plurality of inclined holes (15). The axis of the inclined holes (15) is parallel to the generatrix of the conical reflector (14), and the inclined holes (15) are located between the conical reflector (14) and the inner wall of the lampshade (5).

5. The heat dissipation device for a stage lamp according to claim 4, characterized in that, The first gas equalization network (6) and the second gas equalization network (4) are both stainless steel protective networks. The stainless steel protective network is fixed to the surface of the lampshade (5) by a connecting rod. The air inlet of the air pump (1) is connected to the first gas equalization network (6) through an air inlet hose, and the air outlet of the air pump (1) is connected to the second gas equalization network (4) through an air outlet hose.

6. The heat dissipation device for a stage lamp according to claim 1, characterized in that, The lampshade (5) has a guide shroud (9) fixed to the end of the heat dissipation port. The interior of the guide shroud (9) is divided into two guide cavities by a second isolation plate (24). The guide cavities are aligned with the heat dissipation port. Gas comes out from one of the air outlet slots (21) and flows along the outer wall of one of the filter screens (11) before entering one of the guide cavities.

7. The heat dissipation device for a stage lamp according to claim 6, characterized in that, A conical air guide ring plate (10) is fixedly connected to one end of the guide cavity near the heat dissipation port. There is an air inlet gap (22) between the conical air guide ring plate (10) connected to the guide cavity and the filter screen (11). The width of the air inlet gap (22) is more than 3 times the width of the air outlet groove (21).

8. The heat dissipation device for a stage lamp according to claim 6, characterized in that, The air guide shroud (9) is a conical shroud. The end of the conical shroud away from the heat dissipation port is connected to a transition pipe (7). The second isolation plate (24) divides the transition pipe (7) into two transition chambers. The interior of the transition pipe (7) is rotatably connected to a rotating rod (23) driven by a motor (8). The motor (8) is installed on the outside of the transition pipe (7). The rotating rod (23) is provided with two isolation doors (25) that are perpendicular to each other and used to block one of the transition chambers.

9. The heat dissipation device for a stage lamp according to claim 8, characterized in that, A connecting hose is connected to the transition pipe (7). One end of the connecting hose away from the transition pipe (7) is connected to the middle exhaust assembly. The middle exhaust assembly is installed in the middle position between two adjacent lamp covers (5). The middle exhaust assembly is used to transfer hot air from near the lamp cover (5) to a position away from the lamp cover (5).

10. A stage light, characterized in that, The lamp includes a lampshade (5), a fixing plate (3), a bracket (2), and a heat dissipation device for a stage lamp as described in any one of claims 1-9. The fixing plate (3) is connected to the top of the bracket (2) via a rotating assembly. The rotating shaft of the lampshade (5) is rotatably connected to the support rod of the bracket (2). The side wall of the support rod is provided with a driving member for driving the rotating shaft to rotate. The air pump (1) is mounted on the bracket (2).

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