Stage lamp

Abstract

The stage lamp comprises a shell and a light source, and a containing cavity is formed in the shell; a second heat dissipation assembly is arranged at the other end in the containing cavity and comprises a heat exchanger, a first heat exchange driving set and a second heat exchange driving set, the heat exchanger comprises a heat exchange unit, the space in the heat exchange unit forms a second heat exchange space, and the space outside the heat exchange unit forms a third heat exchange space; the second heat exchange space is not communicated with the third heat exchange space, and the second heat exchange space and the third heat exchange space transfer heat through the wall surface of the heat exchange unit; the first heat exchange driving set is used for forming second heat exchange airflow in the second heat exchange space, and the second heat exchange space communicates with the first heat exchange space. The second heat exchange driving set is used for forming third heat exchange air flow in the third heat exchange space, and the third heat exchange space communicates with the outside of the shell so that heat exchange can be generated between the third heat exchange air flow and the space outside the shell. The light source is arranged in the first heat exchange space.

Description

Technical Field

[0001] The present application relates to the technical field of stage lighting, and in particular to a stage lighting. Background Art

[0002] As a kind of equipment for realizing stage beauty and landscaping, stage lights are widely used because of their gorgeous and varied effects and have become an important part of the stage. Generally, stage lights are composed of a chassis, an arm and a lamp head at the top. The lamp head at the top is equipped with light-emitting elements, optical components, internal and external support structures and control systems. With the development of the times, the demand for outdoor mobile live performances and outdoor landscape lighting is increasing, and the volume and weight requirements of lamps are becoming lighter and smaller. Stage lamps used outdoors must have protection above IP65, and the lamp cavity must be completely sealed to meet the full protection requirements of waterproof, dustproof and corrosion-resistant. The hot gas inside the lamp cavity cannot be exchanged with the outside air, and the temperature will be very high. For example, the gas temperature of the sealed inner cavity of waterproof lamps using ultra-short arc discharge bulbs as light sources is as high as 135°C, and the thermal failure rate is very high. How to improve the efficiency of the thermal management system of outdoor stage lamps and reduce the inner cavity temperature of outdoor stage lamps is an urgent research topic.

[0003] The outdoor stage beam light uses ultra-short arc discharge bulbs as its light source. The arc center temperature of this type of light source is as high as several thousand degrees when it is running. The surface temperature of the glass bulb needs to be controlled in the range of 800℃-900℃. And the surface temperature of the glass bulb can only be accurately controlled by high-speed gas flushing, which requires very high requirements. It is easy for the bulb to burst due to excessive internal pressure and the halide deposition on the inner wall of the glass bulb to quickly decay.

[0004] For outdoor waterproof stage lamps that use ultra-short arc discharge bulbs as light sources, how to design an efficient thermal management system (the air temperature inside the lamp cavity is controlled at 50℃-60℃ during operation) is the most important issue in the lamp development process.

[0005] In the related art, in order to solve the heat dissipation problem of stage lamps, some methods are to use fans in the cavity of the stage lamps to perform convection heat exchange on several key points of the light source, and design an internal heat exchange airflow in the wall of the stage lamps, so that the airflow inside the cavity circulates up and down in the cavity, thereby transferring the heat inside the cavity to the outer shell of the lamp, and the heat is transferred from the inner wall of the outer shell to the outer wall to exchange heat with the air, or a fan is set on the outside of the lamp shell to further improve the heat exchange effect of the outer wall. However, since this setting method has only one heat exchange airflow path in the cavity of the lamp and only relies on the outer shell for heat exchange, it is still difficult to improve the heat exchange efficiency and meet the heat dissipation requirements.

[0006] Another approach is to set radiator fins inside and outside the cavity. After the heat is transferred to the radiator fins inside the cavity, the internal radiator is used to transfer the heat to the external radiator fins, and then the external fan is used to perform convection heat exchange on the external radiator fins. Although this setting method can improve the heat dissipation efficiency compared to the first method, since radiators are set inside and outside the lamp, and the fins on the radiator and the heat pipes have a certain upper limit, in order to meet greater heat exchange requirements, it is necessary to increase the number of fins and heat pipes. However, the internal space of stage lamps is limited. This design method will occupy the space in the cavity and increase the volume and weight of the lamp, which is not conducive to controlling transportation and installation costs. Utility Model Content

[0007] In order to solve at least one of the above technical problems, the present application provides a stage lamp that can improve the heat exchange efficiency while meeting the waterproof effect and has a good heat dissipation effect. The technical solution adopted is as follows.

[0008] The stage lighting fixture provided in the present application includes a shell and a light source, wherein a housing cavity is formed in the shell; one end of the housing cavity is formed as a first heat exchange space, an optical element group and a first heat dissipation component are arranged in the first heat exchange space, the first heat dissipation component is used to form a first heat exchange airflow in the first heat exchange space, and a second heat dissipation component is arranged at the other end of the housing cavity, the second heat dissipation component includes a heat exchanger, and a first heat exchange drive group and a second heat exchange drive group arranged in the heat exchanger, the heat exchanger includes a heat exchange unit, the space in the heat exchange unit is formed as a second heat exchange space, the space outside the heat exchange unit is formed as a third heat exchange space, and the second heat exchange space The second heat exchange space is not connected to the third heat exchange space, and the second heat exchange space and the third heat exchange space transfer heat through the wall of the heat exchange unit; the first heat exchange drive group is used to form a second heat exchange airflow in the second heat exchange space, and the second heat exchange space is connected to the first heat exchange space, so that the second heat exchange airflow and the first heat exchange airflow can generate heat exchange; the second heat exchange drive group is used to form a third heat exchange airflow in the third heat exchange space, and the third heat exchange space is connected to the outside of the shell, so that the third heat exchange airflow and the space outside the shell generate heat exchange, and the flow directions of the second heat exchange airflow and the third heat exchange airflow are arranged at an angle; the light source is arranged in the first heat exchange space.

[0009] In some embodiments of the present application, the heat exchange unit includes a plurality of heat exchange tubes, the plurality of heat exchange tubes are arranged in parallel and at intervals, the space inside the heat exchange tubes forms the second heat exchange space, and the gaps between adjacent heat exchange tubes form the third heat exchange space;

[0010] The heat exchanger also includes a return air cavity, which is arranged at the bottom of the heat exchange tube and is connected to the bottom end of the heat exchange tube. The top end of the heat exchange tube is connected to the first heat exchange space. The light source is arranged at the top end of at least a part of the heat exchange tube. The first heat exchange drive group is arranged at the top end of the remaining part of the heat exchange tube. The first heat exchange drive group is used to drive the second heat exchange airflow to flow along the light source, the heat exchange tube and the return air cavity in sequence, and return to the first heat exchange space through the heat exchange tube.

[0011] In certain embodiments of the present application, an installation cavity is recessed on the surface of the heat exchanger facing the first heat exchange space, the installation cavity is connected to the first heat exchange space, at least a portion of the light source is arranged in the installation cavity, and the heat exchange tube arranged corresponding to the installation cavity is connected to the first heat exchange space through the installation cavity.

[0012] In certain embodiments of the present application, the return air cavity is provided with a partition plate to divide the return air cavity into two return air spaces. The partition plate is also used to separate the second heat exchange air flow into two heat exchange circulation flows after passing through the installation cavity. The two heat exchange circulation flows can flow along the return air space to both sides of the installation cavity respectively.

[0013] In some embodiments of the present application, the second heat dissipation assembly further includes a heat dissipation substrate, which is disposed on a surface of the heat exchanger facing the first heat exchange space, and the periphery of the heat dissipation substrate is connected to the shell;

[0014] The heat dissipation substrate is provided with a first avoidance opening and two second avoidance openings corresponding to the installation cavity, the first avoidance opening is used to install the light source, the two second avoidance openings are respectively located on both sides of the second avoidance opening, the two second avoidance openings are respectively connected to the two return air spaces through the heat exchange pipe, and the first heat exchange drive group is installed in the second avoidance opening.

[0015] In certain embodiments of the present application, the second heat exchange drive group is arranged on both sides of the heat exchanger, the air outlet direction of the second heat exchange drive group is arranged at an angle to the axial direction of the heat exchange tube, and the shell is provided with a window corresponding to the position of the second heat exchange drive group, and the second heat exchange drive group is used to drive the airflow to enter along one of the windows and pass through the two sides of the heat exchanger to flow out from the other window.

[0016] In certain embodiments of the present application, the second heat exchange airflow forms an annular flow surface in the heat exchanger, and the air outlet direction of the second heat exchange driving group is arranged perpendicular to the annular flow surface.

[0017] In certain embodiments of the present application, the stage lighting fixture also includes a third heat dissipation component, which is arranged in the first heat exchange space. The third heat dissipation component includes a bracket and a first light source heat sink arranged on the bracket, and the bracket is arranged at the top of the light source. The first light source heat sink is used to form a fourth heat exchange airflow so that the fourth heat exchange airflow passes through the top of the light source, and the fourth heat exchange airflow can generate heat exchange with the first heat exchange airflow or the second heat exchange airflow.

[0018] In certain embodiments of the present application, the third heat dissipation assembly also includes a second light source heat dissipation element, which is disposed on the bracket and spaced apart from the first light source heat dissipation element. The heat exchanger is provided with a guide channel, and the outlet of the guide channel is toward the bottom end of the light source. The second light source heat dissipation element is used to form a fifth heat exchange airflow that flows along the guide channel to the bottom end of the light source.

[0019] In certain embodiments of the present application, the optical element group includes a color pattern assembly and a lens assembly arranged in sequence along the light emitting direction of the light source, the lens assembly includes an electronic control board, the first heat dissipation assembly includes at least two heat sinks, one of the heat sinks is arranged on the color pattern assembly, and the air outlet direction of the heat sink is arranged toward the electronic control board, the other heat sink is arranged on the lens assembly, and the air outlet direction of the heat sink is arranged toward the color pattern assembly, and the two heat sinks are respectively arranged on both sides of the optical element group, so that the first heat exchange airflow can pass through the color pattern assembly and the lens assembly respectively.

[0020] In certain embodiments of the present application, the stage lamp further includes a pressure balancing component, which is disposed at the bottom of the return air chamber. The pressure balancing component includes a waterproof breathable membrane, and the waterproof breathable membrane is used to release airflow when the air pressure in the return air chamber exceeds a preset value.

[0021] The embodiments of the present application have at least the following beneficial effects: by setting the second heat exchange space and the third heat exchange space independently and not interconnected, and using the third heat exchange space to exchange heat with the outside air, the first heat exchange space and the second heat exchange space in the accommodating cavity can be set as sealed spaces, ensuring that the space where the light source is located meets the waterproof requirements, and setting the third heat exchange space as an open space connected to the outside world, so that a higher heat exchange efficiency can be obtained. The independent design of the second heat exchange space and the third heat exchange space can not only improve the heat exchange efficiency of the two heat exchange spaces, but also avoid mutual interference between the airflows in the two spaces. By using a heat exchanger to simultaneously form the second heat exchange space and the third heat exchange space, the space in the accommodating cavity can be reasonably utilized, making the structure of the stage lamp more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The aspects and advantages described and / or attached in the embodiments of the present application will become apparent and easy to understand in conjunction with the following drawings. It should be noted that the embodiments embodied in the following drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0023] Figure 1 A schematic diagram of the structure of a stage lighting device provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of the structure of a radiator provided in an embodiment of the present application;

[0025] Figure 3 for Figure 2 AA section view;

[0026] Figure 4 for Figure 1 BB cross-section diagram;

[0027] Figure 5 for Figure 1 CC profile of ;

[0028] Figure 6 An exploded schematic diagram of a stage lighting fixture provided in an embodiment of the present application;

[0029] Figure 7 Another exploded schematic diagram of the stage lighting provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] Combine the following Figures 1 to 7 Embodiments of the present application are described in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0031] In the description of the present application, it should be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] This application provides a stage lighting fixture 100, see Figures 1 to 5 The stage lamp 100 includes a housing 101 and a light source. The light source may be a platinum discharge bulb light source, a halogen bulb, an LED light source, etc., which are not limited here. A housing 101 forms a housing cavity. One end of the housing cavity forms a first heat exchange space 10. An optical element group 12 and a first heat dissipation component are provided in the first heat exchange space 10. The first heat dissipation component is used to form a first heat exchange airflow in the first heat exchange space 10. A second heat dissipation component 20 is provided at the other end of the housing cavity. The second heat dissipation component 20 includes a heat exchanger 21, and a first heat exchange drive group 22 and a second heat exchange drive group 23 provided in the heat exchanger 21. The heat exchanger 21 includes a heat exchange unit. The space in the heat exchange unit forms a second heat exchange space 211. The space outside the heat exchange unit forms a third heat exchange space 212. The second heat exchange space 211 and the third heat exchange space 212 are not connected to each other. The second heat exchange space 211 and the third heat exchange space 212 transfer heat through the wall of the heat exchange unit. The first heat exchange driving group 22 is used to form a second heat exchange airflow in the second heat exchange space 211 ( Figure 4 The single dotted line in the figure indicates the flow direction of the second heat exchange airflow). The second heat exchange space 211 is connected to the first heat exchange space 10, so that the second heat exchange airflow and the first heat exchange airflow can generate heat exchange; the second heat exchange drive group 23 is used to form a third heat exchange airflow in the third heat exchange space 212 ( Figure 1 , 5 The double dotted line in the figure indicates the flow direction of the third heat exchange airflow. The third heat exchange space 212 is connected to the outside of the shell 101 so that the third heat exchange airflow exchanges heat with the space outside the shell 101. The flow directions of the second heat exchange airflow and the third heat exchange airflow are set at an angle. The light source 102 is set in the first heat exchange space 10.

[0034] By independently setting the second heat exchange space 211 and the third heat exchange space 212 and not connecting to each other, and using the third heat exchange space 212 to exchange heat with the external air, the first heat exchange space 10 and the second heat exchange space 211 in the accommodating cavity can be set as a sealed space, ensuring that the space where the light source 102 is located meets the waterproof requirements, and setting the third heat exchange space 212 as an open space connected to the outside world, a higher heat exchange efficiency can be obtained. Specifically, the first heat exchange airflow can dissipate heat for the optical element group 12 and cause the internal airflow at one end of the accommodating cavity to flow. On the one hand, the second heat exchange airflow can absorb the heat emitted by the light source 102, which helps to dissipate heat for the light source 102. On the other hand, since the second heat exchange space 211 is connected to the first heat exchange space 10, the second heat exchange airflow can exchange heat with the first heat exchange airflow, thereby improving the heat dissipation effect. The second heat exchange airflow and the third heat exchange airflow use the shape of the heat exchanger 21 so that a certain angle is formed between the two airflows, thereby improving the heat exchange efficiency of the two airflows. The second heat exchange airflow and the third heat exchange airflow exchange heat using the wall surface of the heat exchange unit, thereby transferring heat from the second heat exchange space 211 to the third heat exchange space 212, and then using the second heat exchange drive group 23 to bring the heat of the third heat exchange space 212 out of the shell 101 of the stage lamp 100, so as to achieve heat transfer inside and outside the stage lamp 100. The independent design of the second heat exchange space 211 and the third heat exchange space 212 can not only improve the heat exchange efficiency of the two heat exchange spaces, but also avoid mutual interference between the airflows in the two spaces. The use of the heat exchanger 21 to simultaneously form the second heat exchange space 211 and the third heat exchange space 212 can reasonably utilize the space in the accommodating cavity, making the structure of the stage lamp 100 more compact.

[0035] Optionally, the heat exchange unit can be configured as a tubular, lattice-shaped structure, etc., and the heat exchange unit can be constructed of metal material to further improve its heat exchange effect. The following will take the heat exchange unit configured as a heat exchange tube 24 (eg, a heat exchange copper tube) as an example for description.

[0036] In some embodiments, the heat exchange unit includes a plurality of heat exchange tubes 24, which are arranged in parallel and at intervals, and the space inside the heat exchange tubes 24 forms a second heat exchange space 211, and the gaps between adjacent heat exchange tubes 24 form a third heat exchange space 212. The heat exchanger 21 also includes a return air cavity 213, which is arranged at the bottom of the heat exchange tube 24 and communicated with the bottom end of the heat exchange tube 24, and the top of the heat exchange tube 24 is communicated with the first heat exchange space 10, the light source 102 is arranged at the top of at least a part of the heat exchange tube 24, and the first heat exchange driving group 22 is arranged at the top of the remaining part of the heat exchange tube 24, and the first heat exchange driving group 22 is used to drive the second heat exchange airflow to flow along the light source 102, the heat exchange tube 24 and the return air cavity 213 in sequence, and return to the first heat exchange space 10 through the heat exchange tube 24. By using a plurality of heat exchange tubes 24, the heat exchange area between the second heat exchange space 211 and the third heat exchange space 212 can be increased, thereby improving the heat exchange efficiency between the second heat exchange airflow and the third heat exchange airflow. By providing a return air cavity 213, the heat generated by the light source 102 can be dissipated to the vicinity of the periphery of the light source 102, and enter a portion of the heat exchange tube 24 corresponding to the light source 102, and then enter the return air cavity 213 along this portion of the heat exchange tube 24. The return air cavity 213 can mix the airflow evenly and return it to the first heat exchange space 10 along the heat exchange tube 24 again, so that the second heat exchange airflow forms a circulation, improving the airflow flow effect and heat exchange effect.

[0037] In some embodiments, the surface of the heat exchanger 21 facing the first heat exchange space 10 is concavely provided with an installation cavity 214, the installation cavity 214 is connected to the first heat exchange space 10, at least a portion of the light source 102 is arranged in the installation cavity 214, and the heat exchange tube 24 arranged corresponding to the installation cavity 214 is connected to the first heat exchange space 10 through the installation cavity 214. Using the installation cavity 214 to accommodate the light source 102 can improve the heat exchange effect between the light source 102 and the heat exchange tube 24, that is, the heat emitted by the light source 102 can not only be transferred to the heat exchange tube 24 by using the second heat exchange airflow, but also because the light source 102 is arranged in the installation cavity 214, the heat of the light source 102 can be transferred to the side wall of the installation cavity 214 by radiation, and the side wall of the installation cavity 214 can transfer the heat to the tube wall of the heat exchange tube 24, thereby achieving the effect of heat exchange. Therefore, the setting of the installation cavity 214 increases the heat exchange area between the light source 102 and the heat exchanger 21, thereby improving the heat exchange effect. On the other hand, it can also save the axial space of the stage lighting fixture 100 , shorten the axial dimension of the lighting fixture and the heat exchanger 21 after assembly, and make the structure of the stage lighting fixture 100 more compact.

[0038] Exemplarily, the top opening of the heat exchange tube 24 arranged at the position corresponding to the installation cavity 214 is arranged at the bottom wall of the installation cavity 214, so that the heat generated by the light source 102 can be directly transferred to the heat exchange tube 24 at the bottom wall of the installation cavity 214 by using the second heat exchange airflow. In other examples, the side wall of the installation cavity 214 can also be provided with an opening for the heat exchange tube 24.

[0039] In some embodiments, the return air cavity 213 is provided with a partition plate 2130 to separate the return air cavity 213 into two return air spaces. The partition plate 2130 is also used to separate the second heat exchange airflow into two heat exchange circulations after passing through the installation cavity 214. The two heat exchange circulations can flow along the return air spaces to the two sides of the installation cavity 214 respectively. In this way, the second heat exchange airflow can be separated into two heat exchange circulations under the separation effect of the partition plate 2130. The airflow directions of the two heat exchange circulations flow in opposite directions on the two sides of the partition plate 2130, and enter the heat exchange tubes 24 on the two sides of the installation cavity 214 along the two return air spaces, and then return to the spaces on the two sides of the installation cavity 214 respectively. By setting the second heat exchange airflow as two heat exchange circulations, the flow effect and heat exchange effect of the airflow can be improved.

[0040] In some embodiments, the second heat dissipation assembly 20 further includes a heat dissipation substrate 25, which is disposed on the surface of the heat exchanger 21 facing the first heat exchange space 10, and the outer periphery of the heat dissipation substrate 25 is connected to the housing 101. The heat dissipation substrate 25 is provided with a first avoidance opening 251 and two second avoidance openings 252 corresponding to the installation cavity 214, the first avoidance opening 251 is used to install the light source 102, the two second avoidance openings 252 are respectively located on both sides of the second avoidance opening 252, the two second avoidance openings 252 are respectively connected to the two return air spaces through the heat exchange pipe 24, and the first heat exchange drive group 22 is installed in the second avoidance opening 252. The heat dissipation substrate 25 can provide installation space for the heat exchanger 21, so as to fix the heat exchanger 21 in the housing 101. The second avoidance opening 252 is helpful for installing the first heat exchange drive group 22, and shortens the air outlet distance of the first heat exchange drive group 22, so that the entire heat exchanger 21 structure is more compact.

[0041] In some embodiments, the second heat exchange drive group 23 is arranged on both sides of the heat exchanger 21, and the air outlet direction of the second heat exchange drive group 23 is arranged at an angle to the axial direction of the heat exchange tube 24. The housing 101 is provided with a window 30 at a position corresponding to the second heat exchange drive group 23. The second heat exchange drive group 23 is used to drive the airflow to enter along one of the windows 30 and pass through both sides of the heat exchanger 21 to flow out from the other window 30. The window 30 can be used to connect the third heat exchange space 212 located in the housing 101 with the space outside the housing 101, which helps the third heat exchange airflow to transfer heat to the outside of the housing 101, thereby achieving the heat dissipation effect of the stage lamp 100. The second heat exchange drive group 23 can provide power for the third heat exchange airflow, further improving the heat exchange effect. The third heat exchange airflow can enter and leave through two windows 30 arranged opposite to each other, so that the third heat exchange airflow flows roughly in one direction, thereby improving its heat exchange efficiency. The third heat exchange airflow is set at an angle to the axial direction of the heat exchange tube 24, so that the third heat exchange airflow and the outer wall of the heat exchange tube 24 can have a stronger airflow impact effect, thereby improving the heat exchange effect. Exemplarily, the air outlet direction of the second heat exchange drive group 23 can be set perpendicular to the axial direction of the heat exchange tube 24.

[0042] In some embodiments, the second heat exchange airflow forms a circulation surface in the heat exchanger 21, and the air outlet direction of the second heat exchange driving group 23 is set perpendicular to the circulation surface. By setting the air outlet direction of the second heat exchange driving group 23 perpendicular to the circulation surface, the third heat exchange airflow can be roughly perpendicular to the circulation surface, which helps the third heat exchange airflow to pass through the two heat exchange circulations formed by the second heat exchange airflow at the same time, improves the heat exchange effect of the third heat exchange airflow and the second heat exchange airflow, and thus better transfers the heat in the second heat exchange space 211 to the outside of the stage lamp 100.

[0043] In some embodiments, see Figure 7 The stage lamp 100 also includes a third heat dissipation component 40, which is arranged in the first heat exchange space 10. The third heat dissipation component 40 includes a bracket 41 and a first light source heat dissipation component 42 arranged on the bracket 41. The bracket 41 is arranged at the top of the light source 102. The first light source heat dissipation component 42 is used to form a fourth heat exchange airflow, so that the fourth heat exchange airflow passes through the top of the light source 102, and the fourth heat exchange airflow can exchange heat with the first heat exchange airflow or the second heat exchange airflow. The third heat dissipation component 40 can further dissipate heat from the top of the light source 102, and the fourth heat exchange airflow exchanges heat with the first heat exchange airflow and the second heat exchange airflow, so as to timely take away the heat radiated to the periphery by the light source 102, improve the fluidity of the airflow around the light source 102, further ensure the heat dissipation efficiency of the light source 102, and enable the light source 102 to work in a suitable temperature environment.

[0044] In some embodiments, the third heat dissipation assembly 40 further includes a second light source heat dissipation element 43, which is disposed on the bracket 41 and is spaced apart from the first light source heat dissipation element 42. The heat exchanger 21 is provided with a guide channel 215, the outlet of the guide channel 215 is toward the bottom end of the light source 102, and the second light source heat dissipation element 43 is used to form a fifth heat exchange airflow to flow along the guide channel 215 to the bottom end of the light source 102. The second light source heat dissipation element 43 can be used to dissipate heat from the bottom end of the light source 102, further improving the heat dissipation effect of the light source 102. The outlet of the guide channel 215 can be disposed on the bottom wall or side wall of the mounting cavity 214, which is conducive to the fifth heat exchange airflow to dissipate heat from the bottom of the light source 102 in a timely manner. Combined with the first light source heat dissipation element 42 and the second light source heat dissipation element 43, the effect of simultaneous airflow heat exchange on the top and bottom of the light source 102 can be formed, ensuring that the light source 102 can be in a good temperature environment, and improving the reliability of the use of the light source 102.

[0045] Optionally, two first light source heat sinks 42 can be provided, and symmetrically arranged on both sides of the top of the light source 102, so that the heat dissipation effect can be enhanced. The bracket 41 can be a metal structure, which can not only ensure that the bracket 41 has sufficient strength, but also the good thermal conductivity of the metal can help further dissipate the heat of the light source 102. In order to avoid the metal bracket 41 from being too high in temperature and affecting the performance of the first light source heat sink 42 and the second light source heat sink 43, a heat insulation gasket can be further provided between the first light source heat sink 42, the second light source heat sink 43 and the bracket 41 to reduce the heat transfer from the bracket 41 to the first light source heat sink 42 and the second light source heat sink 43. A light source mounting portion 411 can be provided on the bracket 41, and the light source mounting portion 411 is connected to the light emitting side of the light source 102. The light source mounting portion 411 can be provided as a transparent window or a hollow structure, so as not to affect the propagation of the light of the light source 102. The light source mounting portion 411 can fix the top of the light source 102 to prevent the light source 102 from shaking or shifting.

[0046] In some embodiments, the optical element group 12 includes a color pattern component 121 and a lens component 122 arranged in sequence along the light emitting direction of the light source 102, the lens component 122 includes an electronic control board 1221, and the first heat dissipation component includes at least two heat dissipation elements, one of which is arranged on the color pattern component 121, and the air outlet direction of the heat dissipation element is arranged toward the electronic control board 1221, and the other heat dissipation element is arranged on the lens component 122, and the air outlet direction of the heat dissipation element is arranged toward the color pattern component 121, and the two heat dissipation elements are arranged on both sides of the optical element group 12, so that the first heat exchange airflow can pass through the color pattern component 121 and the lens component 122, respectively. By using at least two heat dissipation elements of the first heat dissipation component, a circulating airflow ( Figure 4The dotted line in the figure indicates the flow direction of the first heat exchange airflow. The circulating airflow first flows to the electronic control board 1221 under the driving action of one of the heat sinks, and dissipates the heat of the electronic control board 1221. Then, it flows through the lens assembly 122 and reaches another heat sink. The airflow continues to flow to the color pattern assembly 121 under the driving action of another heat sink, and then flows through the surface of the color pattern assembly 121 and returns to the position of the first heat sink. In this way, the circulating airflow can pass through the lens assembly 122 and the color pattern assembly 121 respectively, thereby accelerating the airflow in the first heat exchange space 10 and improving the heat dissipation effect of the optical element group 12.

[0047] Optionally, a third heat sink may be provided in the first heat dissipation component, and the third heat sink may be provided on the color pattern component 121. The air outlet direction of the third heat sink is the same as the direction of the circulating airflow formed by the other two heat sinks. In this way, the power of the circulating airflow can be further enhanced, thereby ensuring that the first heat dissipation airflow can flow around the first heat dissipation space.

[0048] In some embodiments, see Figure 6 The stage lamp 100 further includes a pressure balance component 50, which is disposed at the bottom of the return air chamber 213. The pressure balance component 50 includes a waterproof breathable membrane 51, which is used to release the airflow when the air pressure in the return air chamber exceeds a preset value. Since a large amount of heat will be accumulated inside the stage lamp 100 during use, the airflow inside the housing 101 will expand after heating, which will cause the pressure inside the housing 101 to rise. In order to balance the pressure inside and outside the housing 101, the waterproof breathable membrane 51 is provided to enable the gas inside the housing 101 to be released from the waterproof breathable membrane 51 to the outside of the housing 101, thereby ensuring that the air pressure inside the housing 101 is maintained within a reasonable range. It can be understood that the waterproof breathable membrane 51 can allow gas molecules to pass through, but has an intercepting effect on water molecules. Therefore, external water vapor will not enter the second heat exchange space 211 through the waterproof breathable membrane 51, so as to ensure the waterproof performance of the stage lamp 100.

[0049] Optionally, the pressure balance assembly 50 also includes a breathable membrane pressing plate 52 and a noise reducer 53. The waterproof breathable membrane 51 is fixed to the outer surface of the bottom wall of the reflux chamber by gluing. The breathable membrane pressing plate 52 is pressed tightly against the surface of the waterproof breathable membrane 51. The breathable membrane pressing plate 52 is a rigid part that can provide support and protection for the waterproof breathable membrane 51. A plurality of through holes are provided on the breathable membrane pressing plate 52, and the through holes are used for airflow to pass through the waterproof breathable membrane 51. The gas will generate certain vibrations in the process of passing through the waterproof breathable membrane 51, thereby causing noise. To solve this problem, the noise reducer 53 can be fixedly connected to the surface of the breathable membrane pressing plate 52, and the spacing distance between the noise reducer 53 and the waterproof breathable membrane 51 can be adjusted to a suitable range, so that the gas slowly extends from one side of the waterproof breathable membrane 51, thereby adjusting the vibration frequency of the gas and the waterproof breathable membrane 51 to achieve the effect of noise reduction.

[0050] Exemplarily, the first light source heat sink 42, the second light source heat sink 43, the first heat exchange drive group 22, the second heat exchange drive group 23 of the second heat exchange assembly 20 and the heat sink of the third heat exchange assembly can adopt centrifugal fans. Of course, in other examples, other types of airflow drive components, such as axial flow fans, etc., can also be used, which is not limited here.

[0051] In some embodiments, the stage lighting fixture 100 may also be provided with a sensor, for example, the sensor is mounted on the electronic control board 1221, or mounted on the bracket 41 of the third heat dissipation assembly 40. The sensor is used to detect the temperature of the accommodating cavity of the housing 101, so as to adjust the heat exchange speed of the heat dissipating element, the first heat exchange drive group 22, and the second heat exchange drive group 23 according to the temperature of the accommodating cavity (for example, adjust the speed of the centrifugal fan), realize the control of the flow rate and flow of the heat exchange airflow, achieve the effect of accurately adjusting the temperature and operating noise in the accommodating cavity, and realize automatic control of the heat dissipation of the stage lighting fixture 100.

[0052] Optionally, see Figure 7 The housing 101 may include an upper cover 1011, a middle frame 1013 and a lower cover 1012. The upper cover 1011 and the lower cover 1012 are respectively arranged on both sides of the middle frame 1013. When the three are covered with each other, their internal spaces constitute a containing cavity. The upper cover 1011 and the middle frame 1013, and the middle frame 1013 and the lower cover 1012 are sealed and connected by means of a seal (such as a sealing strip, etc.) to ensure the sealing effect in the housing 101. The optical element group 12 and the first heat dissipation assembly can be arranged in the space formed by the upper cover 1011, the second heat dissipation assembly 20 can be arranged in the space formed by the lower cover 1012, and the window 30 for the third heat exchange airflow to pass through can be arranged on the side wall of the lower cover 1012.

[0053] In some embodiments, a lamp support plate 1014 can also be provided in the shell 101. The lamp support plate 1014 is provided to extend along the axial direction of the shell 101. The lamp support plate 1014 can be fixedly connected to the heat dissipation substrate 25. The color pattern component 121 and the lens component 122 of the optical element group 12 can be installed on the lamp support plate 1014 in sequence, thereby achieving the fixation of the optical element group 12.

[0054] In some embodiments, the second heat exchange drive group 23 is installed on both sides of the heat exchanger 21 through the fan support plate 26. An isolation plate 27 may also be provided on the fan support plate 26, and the isolation plate 27 protrudes laterally along the second heat exchanger 21 drive group. The inner wall of the lower cover 1012 may also be provided with a support rib 10121 at a position corresponding to the second heat exchange drive group 23. When the second heat dissipation assembly 20 is installed to the lower cover 1012, the support rib 10121 and the isolation plate 27 are mutually staggered and plugged, so as to fix the second heat dissipation assembly 20 in the lower cover 1012. A certain gap is formed between the outer side surface of the second heat dissipation driving group and the inner wall of the lower cover 1012, and the supporting ribs 10121 are connected to the isolation plate 27, so that the space between the inner wall of the lower cover 1012 and the outer side of the heat exchanger 21 is enclosed to form a space, which can be used for air intake or air exhaust. The window 30 of the lower shell 101 is arranged corresponding to the space to facilitate external airflow to enter the space, and under the action of the second heat exchange driving group 23, enter from one side of the heat exchanger 21 and flow out from the other side of the heat exchanger 21.

[0055] The heat dissipation process of the stage lighting fixture 100 is as follows:

[0056] During the use of the stage lamp 100, the light source 102 and the optical element group 12 continue to generate heat. Part of the heat of the light source 102 is transferred to the side wall and bottom wall of the installation cavity 214 through radiation, and then transferred to the heat exchange tube 24, and the other part of the heat is radiated to the gas around the light source 102, and the gas also enters the heat exchange tube 24. Under the action of the first heat exchange drive group 22, the airflow in the heat exchange tube 24 moves toward the return air cavity 213, and after reaching the partition plate 2130, it flows to the two return air spaces respectively, and flows back to the first heat exchange space 10 from the ventilation pipes on both sides of the installation cavity 214, thereby forming two circulating airflows of the second heat exchanger 21. The air outside the shell 101 enters the shell 101 under the driving action of the second heat exchange drive group 23, and enters the third heat exchange space 212. The third heat exchange airflow and the second heat exchange airflow exchange heat through the tube wall of the heat exchange tube 24 to transfer the heat in the second heat exchange airflow to the third heat exchange airflow, and take away the heat when the third heat exchange airflow leaves the shell 101.

[0057] On the other hand, the first light source heat sink 42 and the second light source heat sink 43 in the third heat dissipation assembly 40 respectively supply air for heat exchange to the top and bottom of the light source 102 at the same time, generating a fourth heat exchange airflow and a fifth heat exchange airflow. These two heat exchange airflows can further transfer heat to the second heat exchange airflow, thereby taking away the heat from the periphery of the light source 102.

[0058] At the same time, a circulating first heat exchange airflow can be formed between the heat sinks respectively arranged in the color pattern assembly 121 and the lens assembly 122 in the first heat dissipation assembly. The circulating airflow flows from bottom to top along one of the inner walls of the upper cover 1011. When reaching the top wall of the upper cover 1011, the first heat exchange airflow flows horizontally and reaches the inner wall on the opposite side of the upper cover 1011, flows from top to bottom along the inner wall and reaches the heat dissipation substrate 25, and then flows horizontally along the heat dissipation substrate 25 to the inner wall on the opposite side of the upper cover 1011 to form a circulating flow state. The first heat exchange airflow can take away the heat of the optical element group 12, and take away a part of the heat of the light source 102 when passing through the heat dissipation substrate 25. The first heat exchange airflow can transfer heat to the outside of the housing 101 through the inner wall of the upper cover 1011, and can also transfer a part of the heat to the second heat exchange airflow when passing through the heat dissipation substrate 25, so as to achieve the effect of heat dissipation of the optical element group 12 and the light source 102.

[0059] In the description of this specification, if the reference terms "one embodiment", "some examples", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0060] The above describes the implementation methods of the present application in detail in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

[0061] In the description of this application, if "," appears in the patent name, it means an "and" relationship, not an "or" relationship. For example, if the patent name is "a kind of A, B", it means that the content required to be protected by this application is: the technical solution with the subject name A and the technical solution with the subject name B.

Claims

1. A stage lighting fixture, characterized in that: include A housing, wherein a housing cavity is formed in the housing; One end of the accommodating cavity is formed as a first heat exchange space, an optical element group and a first heat dissipation component are arranged in the first heat exchange space, the first heat dissipation component is used to form a first heat exchange airflow in the first heat exchange space, and the other end of the accommodating cavity is provided with a second heat dissipation component, the second heat dissipation component includes a heat exchanger, and a first heat exchange drive group and a second heat exchange drive group arranged in the heat exchanger, the heat exchanger includes a heat exchange unit, the space in the heat exchange unit is formed as a second heat exchange space, and the space outside the heat exchange unit is formed as a third heat exchange space, the second heat exchange space and the third heat exchange space are not connected to each other, and the second heat exchange space and the third heat exchange space transfer heat through the wall surface of the heat exchange unit; The first heat exchange drive group is used to form a second heat exchange airflow in the second heat exchange space, and the second heat exchange space is connected to the first heat exchange space, so that the second heat exchange airflow and the first heat exchange airflow can generate heat exchange; the second heat exchange drive group is used to form a third heat exchange airflow in the third heat exchange space, and the third heat exchange space is connected to the outside of the shell, so that the third heat exchange airflow and the space outside the shell generate heat exchange, and the flow directions of the second heat exchange airflow and the third heat exchange airflow are set at an angle; The light source is arranged in the first heat exchange space.

2. The stage lighting fixture according to claim 1, characterized in that: The heat exchange unit comprises a plurality of heat exchange tubes, the plurality of heat exchange tubes are arranged in parallel and at intervals, the space inside the heat exchange tubes forms the second heat exchange space, and the gaps between adjacent heat exchange tubes form the third heat exchange space; The heat exchanger also includes a return air cavity, which is arranged at the bottom of the heat exchange tube and is connected to the bottom end of the heat exchange tube. The top end of the heat exchange tube is connected to the first heat exchange space. The light source is arranged at the top end of at least a part of the heat exchange tube. The first heat exchange drive group is arranged at the top end of the remaining part of the heat exchange tube. The first heat exchange drive group is used to drive the second heat exchange airflow to flow along the light source, the heat exchange tube and the return air cavity in sequence, and return to the first heat exchange space through the heat exchange tube.

3. The stage lighting fixture according to claim 2, characterized in that: A mounting cavity is recessed on the surface of the heat exchanger facing the first heat exchange space, the mounting cavity is connected to the first heat exchange space, at least a portion of the light source is arranged in the mounting cavity, and the heat exchange tube arranged corresponding to the mounting cavity is connected to the first heat exchange space through the mounting cavity.

4. The stage lighting fixture according to claim 3, characterized in that: The return air cavity is provided with a partition plate to divide the return air cavity into two return air spaces. The partition plate is also used to separate the second heat exchange air flow into two heat exchange circulation flows after passing through the installation cavity. The two heat exchange circulation flows can flow along the return air space to both sides of the installation cavity respectively.

5. The stage lighting fixture according to claim 4, characterized in that: The second heat dissipation assembly further includes a heat dissipation substrate, which is disposed on a surface of the heat exchanger facing the first heat exchange space, and the outer periphery of the heat dissipation substrate is connected to the shell; The heat dissipation substrate is provided with a first avoidance opening and two second avoidance openings corresponding to the installation cavity, the first avoidance opening is used to install the light source, the two second avoidance openings are respectively located on both sides of the second avoidance opening, the two second avoidance openings are respectively connected to the two return air spaces through the heat exchange pipe, and the first heat exchange drive group is installed in the second avoidance opening.

6. The stage lighting fixture according to claim 2, characterized in that: The second heat exchange drive group is arranged on both sides of the heat exchanger, and the air outlet direction of the second heat exchange drive group is arranged at an angle to the axial direction of the heat exchange tube. The shell is provided with a window corresponding to the position of the second heat exchange drive group, and the second heat exchange drive group is used to drive the airflow to enter along one of the windows and pass through the two sides of the heat exchanger to flow out from the other window.

7. The stage lighting fixture according to claim 6, characterized in that: The second heat exchange airflow forms an annular flow surface in the heat exchanger, and the air outlet direction of the second heat exchange driving group is arranged perpendicular to the annular flow surface.

8. The stage lighting fixture according to any one of claims 1 to 7, characterized in that: The stage lamp also includes a third heat dissipation component, which is arranged in the first heat exchange space. The third heat dissipation component includes a bracket and a first light source heat dissipation element arranged on the bracket. The bracket is arranged at the top of the light source. The first light source heat dissipation element is used to form a fourth heat exchange airflow so that the fourth heat exchange airflow passes through the top of the light source. The fourth heat exchange airflow can generate heat exchange with the first heat exchange airflow or the second heat exchange airflow.

9. The stage lighting fixture according to claim 8, characterized in that: The third heat dissipation assembly also includes a second light source heat dissipation element, which is arranged on the bracket and spaced apart from the first light source heat dissipation element. The heat exchanger is provided with a guide channel, and the outlet of the guide channel is toward the bottom end of the light source. The second light source heat dissipation element is used to form a fifth heat exchange airflow that flows along the guide channel to the bottom end of the light source.

10. The stage lighting fixture according to any one of claims 1 to 7, characterized in that: The optical element group includes a color pattern component and a lens component which are sequentially arranged along the light emitting direction of the light source, the lens component includes an electronic control board, the first heat dissipation component includes at least two heat sinks, one of which is arranged on the color pattern component, and the air outlet direction of the heat sink is arranged toward the electronic control board, the other heat sink is arranged on the lens component, and the air outlet direction of the heat sink is arranged toward the color pattern component, the two heat sinks are respectively arranged on both sides of the optical element group, so that the first heat exchange airflow can pass through the color pattern component and the lens component respectively.

11. The stage lighting fixture according to any one of claims 2 to 7, characterized in that: The stage lamp also includes a pressure balance component, which is arranged at the bottom of the return air cavity. The pressure balance component includes a waterproof breathable membrane, which is used to release airflow when the air pressure in the return air cavity exceeds a preset value.

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