Heat dissipation mechanism and stage lamp

Abstract

The utility model discloses a heat dissipation mechanism and a stage lamp. The heat dissipation mechanism comprises a rotating seat assembly, a light source component, a radiator assembly and a driving assembly, and the rotating seat assembly comprises a rotatable mounting structure; the light source component is arranged on the mounting structure; the radiator assembly comprises an output port which faces the light source component. The driving assembly is used for driving the mounting structure to rotate so that the output port can dissipate heat of different positions of the light source component. The light source component is installed on the rotating base assembly, the driving assembly is used for enabling the light source component to rotate, the radiator assembly is fixed, the stability and reliability of the heat dissipation system are improved, and due to the fact that the bulb can rotate, the risk that due to the fact that a certain position of the bulb is heated continuously, all areas are heated unevenly, and consequently the bulb is broken can be avoided; the service life of the bulb is prolonged.

Description

Technical Field

[0001] This application relates to the field of stage lighting technology, and in particular to a heat dissipation mechanism and a stage lighting fixture. Background Technology

[0002] Because stage lighting fixtures have high power and high temperatures, natural heat dissipation is insufficient to dissipate the heat generated by the light source in a timely manner, necessitating forced cooling. This is especially true for stage lighting fixtures using ultra-short arc plasma bulbs, where the bulb temperature can reach 800 degrees Celsius during operation. Furthermore, during the fixture's oscillation process, the bulb rotates with the fixture, causing significant temperature unevenness due to gravity and thermal expansion. When this temperature difference reaches a certain level, the bulb is prone to bursting.

[0003] To address this issue, related technologies include solutions such as using a rotating fan to adjust the airflow to follow the high-temperature point of the bulb for cooling, as in CN107726269A; and solutions using a fixed fan and adjusting the airflow duct to follow the high-temperature point of the bulb for cooling, as in CN107763587A. However, these solutions have overly complex cooling mechanisms, are not stable enough, and bulb explosions occur frequently. Summary of the Invention

[0004] The purpose of this application is to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a heat dissipation mechanism that can prevent a single location of the bulb from being continuously heated, thus avoiding the risk of uneven heating and breakage, and improving the lifespan of the bulb.

[0005] This application also proposes a stage lighting fixture that includes the aforementioned heat dissipation mechanism.

[0006] The heat dissipation mechanism according to the first aspect of this application includes:

[0007] A rotating base assembly, including a rotatable mounting structure;

[0008] A light source component is mounted on the mounting structure;

[0009] A heat sink assembly includes an output port facing the light source component;

[0010] A driving component is used to drive the mounting structure to rotate so that the output port can dissipate heat to different positions of the light source component.

[0011] The heat dissipation mechanism according to the first aspect of this application has at least the following beneficial effects: by mounting the light source component on the rotating base assembly and using the drive assembly to enable the light source component to rotate while the heat sink assembly remains stationary, not only is the stability and reliability of the heat dissipation system improved, but also, since the bulb can rotate, the risk of uneven heating and cracking due to continuous heating of a certain part of the bulb can be avoided, thereby improving the life of the bulb.

[0012] According to the heat dissipation mechanism of the first aspect of this application, the heat dissipation mechanism further includes a control device for controlling the drive component.

[0013] According to the heat dissipation mechanism of the first aspect embodiment of this application, the control device is used to control the drive component to intermittently drive the mounting structure to rotate;

[0014] Alternatively, the heat dissipation mechanism may also include a sensor for detecting temperature difference information at different locations in the light source component, and the control device is configured to control the drive component based on the temperature difference information detected by the sensor.

[0015] According to the heat dissipation mechanism of the first aspect embodiment of this application, the driving assembly includes a driving member, a crank, and a swing rod. One end of the crank is connected to the driving member, the other end of the crank is connected to one end of the swing rod, and the other end of the swing rod is connected to the mounting structure.

[0016] According to the heat dissipation mechanism of the first aspect embodiment of this application, a connection gap for reducing vibration is provided at the connection between the crank and the swing rod;

[0017] And / or the shape of the swing rod is arc-shaped.

[0018] According to the heat dissipation mechanism described in the first aspect of this application, the rotating seat assembly includes a connecting rod swing plate, a lower ball bearing seat, an upper ball bearing seat, and a ball bearing assembly. The connecting rod swing plate and the upper ball bearing seat serve as at least part of the mounting structure for mounting the light source component. The connecting rod swing plate is used to connect with the driving assembly. The lower ball bearing seat is disposed on the outer periphery of the light source component and surrounds the upper ball bearing seat. The ball bearing assembly is disposed between the lower ball bearing seat and the light source component.

[0019] According to the heat dissipation mechanism of the first aspect embodiment of this application, the ball assembly includes a plurality of ball bodies and a ball retainer, the ball retainer being used to separate adjacent ball bodies.

[0020] According to the heat dissipation mechanism described in the first aspect of this application, the ball body and the ball cage are made of ceramic material.

[0021] According to the heat dissipation mechanism described in the first aspect of this application, the heat sink assembly includes fans respectively disposed on both sides of the rotating base assembly, each fan having an air duct at its output end, and the air outlet of each air duct serving as an output outlet facing different positions of the light source.

[0022] A stage lighting fixture according to a second aspect of this application includes a heat dissipation mechanism as described in a first aspect of this application.

[0023] It is easy to understand that the stage lighting fixture in the second aspect embodiment of this application has the same technical effect as the heat dissipation mechanism in the first aspect embodiment, and therefore will not be described again.

[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0025] The present application will be further described below with reference to the accompanying drawings and embodiments;

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0027] Figure 2 This is an exploded view of an embodiment of this application.

[0028] Figure label:

[0029] 100. Rotary seat assembly; 110. Connecting rod swing plate; 120. Lower ball bearing seat; 130. Upper ball bearing seat; 141. Ball bearing body; 142. Ball bearing cage;

[0030] 200. Light source components;

[0031] 300. Radiator assembly; 310. Fan; 320. Air duct;

[0032] 400. Drive assembly; 410. Drive component; 420. Crank; 430. Swing arm. Detailed Implementation

[0033] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0034] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] In the description of this application, "several" means one or more, "more than" means at least two, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0036] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of the above terms in this application after considering the specific content of the technical solution.

[0037] Reference Figures 1 to 2 The heat dissipation mechanism of the first aspect of this application is applied to stage lighting fixtures. The heat dissipation mechanism includes a rotating seat assembly 100, a light source component 200, a heat sink assembly 300, and a drive assembly 400.

[0038] The rotating base assembly 100 includes a rotatable mounting structure; the light source component 200 is disposed on the mounting structure; the heat sink assembly 300 includes an output port facing the light source component 200; and the drive assembly 400 is used to drive the mounting structure to rotate so that the output port can dissipate heat to different positions of the light source component 200.

[0039] Understandably, by mounting the light source component 200 on the rotating base assembly 100 and using the drive assembly 400 to enable the light source component 200 to rotate while the heat sink assembly 300 remains stationary, not only is the stability and reliability of the heat dissipation system improved, but also, because the bulb can rotate, the risk of uneven heating and cracking due to continuous heating of a certain part of the bulb can be avoided, thus extending the life of the bulb.

[0040] In some embodiments, the heat dissipation mechanism further includes a support plate, a rotating seat assembly 100 and a light source component 200 disposed at the center of the support plate, a heat sink disposed on one side of the support plate, and an air vent facing the bulb opening for heat dissipation of the light source component 200. As the driving assembly 400 drives, the light source component 200 rotates relative to the air vent, thereby enabling all circumferential surfaces of the light source component 200 to dissipate heat through the air vent, so as to avoid uneven heating in different areas as much as possible.

[0041] In some embodiments of this application, the heat dissipation mechanism further includes a control device for controlling the drive component 400. It is understood that the control device can control the drive component 400 via a program, enabling the drive component 400 to perform corresponding driving actions so that the light source component 200 can rotate according to preset control commands, thereby further preventing uneven heating in different areas.

[0042] In some embodiments of this application, the control device is used to control the drive assembly 400 to intermittently drive the mounting structure to rotate.

[0043] Understandably, when stage lighting illuminates horizontally, the heat of the bulb concentrates on the upper part of the wick and the upper part of the bulb wall. Prolonged exposure can cause uneven heating and make the bulb prone to breakage. To prevent bulb breakage, the drive assembly 400 drives the light source component 200 to rotate at regular intervals, avoiding the risk of a specific part of the stage lighting bulb breaking due to prolonged high-temperature exposure.

[0044] In some embodiments of this application, the heat dissipation mechanism further includes a sensor for detecting temperature differences at different locations within the light source component 200. The control device is configured to control the drive component 400 based on the temperature difference detected by the sensor. It is understood that when the temperature difference at different locations of the bulb exceeds a preset value, the light source component 200 is driven to rotate by a certain angle, ensuring that the light source component 200 maintains a uniform temperature at any illumination angle, thus avoiding the risk of the stage lighting bulb cracking at a certain location due to prolonged exposure to high temperatures.

[0045] In some embodiments of this application, the drive assembly 400 includes a drive member 410, a crank 420, and a swing rod 430. One end of the crank 420 is connected to the drive member 410, and the other end of the crank 420 is connected to one end of the swing rod 430. The other end of the swing rod 430 is connected to a mounting structure. It is understood that using the crank 420 linkage mechanism has the advantages of simple structure, ease of manufacture and maintenance, and ensures stable operation of the light source.

[0046] In some embodiments, the drive assembly 400 includes a motor and a transmission arm. The motor is mounted on a support plate. In some embodiments, the transmission arm is a crank 420 connecting rod structure. One end of the crank 420 connecting rod structure is mounted on the output shaft of the motor, and the other end is connected to the bulb. The rotational motion of the motor drives the bulb to rotate through the crank 420 connecting rod structure, so that different parts of the bulb are heated evenly.

[0047] In some embodiments of this application, a connection gap is provided at the connection between the crank 420 and the swing arm 430 to reduce vibration; it is understood that the gap at the connection between the crank 420 and the swing arm 430 is to prevent the vibration of the fan 310 from being transmitted to the bulb and causing the bulb to vibrate unexpectedly.

[0048] In some embodiments of this application, the swing arm 430 is arc-shaped, which facilitates the structural design of the crank 420 connecting rod structure.

[0049] In some embodiments, the crank 420 connecting rod structure includes a crank 420 and a swing arm 430. The crank 420 has two ends, one end of which is connected to the output shaft of the motor, and the other end is connected to the swing arm 430. The other end of the swing arm 430 is connected to a light bulb. In some embodiments, the swing arm 430 is arc-shaped, with a curvature slightly larger than that of the light bulb, thereby making the design of the transmission mechanism more reasonable.

[0050] In some embodiments of this application, the rotary seat assembly 100 includes a connecting rod swing plate 110, a lower ball bearing seat 120, an upper ball bearing seat 130, and a ball bearing assembly. The connecting rod swing plate 110 and the upper ball bearing seat 130 serve as at least part of the mounting structure for mounting the light source component 200. The connecting rod swing plate 110 is used to connect to the drive assembly 400. The lower ball bearing seat 120 is disposed on the outer periphery of the light source component 200 and surrounds the upper ball bearing seat 130. The ball bearing assembly is disposed between the lower ball bearing seat 120 and the light source component 200. It is understood that the connecting rod swing plate 110 is used to connect the drive assembly 400 to make the transmission design reasonable and convenient. The lower ball bearing seat 120 and the upper ball bearing seat 130 are used to enclose a cavity for mounting the ball bearing assembly. The ball bearing assembly is used to ensure smooth rotation of the light source component 200.

[0051] In some embodiments, the light source component 200 includes a lamp plate holder and a bulb, and the rotating seat assembly 100 includes a connecting rod swing plate 110. The connecting rod swing plate 110 includes an annular body and a protrusion. One end of the protrusion is movably connected to the swing rod 430, and the other end is fixedly connected to the annular body. The connecting rod swing plate 110 is disposed on the lamp plate holder, which is a disc with a through hole in the middle. The bulb is fixed on the lamp plate holder, and the light outlet of the bulb is connected to the through hole of the lamp plate holder. The center of the through hole of the lamp plate holder coincides with the optical axis of the bulb to ensure their coaxiality. A lower ball bearing seat 120 is provided on the outer periphery of the lamp plate holder, and a ball bearing assembly is provided between the lower ball bearing seat 120 and the lamp plate holder. Then, an upper ball bearing seat 130 is fixed together with the lamp plate holder, and the lower ball bearing seat 120 is fixedly disposed on the support plate to form a bulb rotating seat.

[0052] In some embodiments, the lower ball bearing seat 120 has a notch, and the protrusion of the connecting rod swing plate 110 passes through the notch and connects to the swing rod 430 of the crank 420 connecting rod structure. When the motor rotates, the crank 420 connecting rod mechanism pushes the lamp plate fixing seat to rotate, and at the same time drives the bulb to rotate, thereby achieving the purpose of switching the high temperature point of the bulb.

[0053] In some embodiments of this application, the ball assembly includes a plurality of ball bodies 141 and a ball retainer 142, the ball retainer 142 being used to separate adjacent ball bodies 141. It is understood that a certain distance is maintained between the ball bodies 141 and the ball retainer 142 to prevent overly densely packed balls from becoming jammed due to high-temperature expansion.

[0054] In some embodiments of this application, the ball body 141 and the ball cage 142 are made of ceramic material. It is understood that, to ensure smooth rotation, the ball assembly uses ceramic balls and the ball cage 142. Ceramic balls are heat-resistant and have less high-temperature deformation than metal materials, and also possess inherent lubricating properties. The ball cage 142 can ensure smooth and stable operation without jamming after the balls expand due to high temperatures near the bulb.

[0055] In some embodiments of this application, the heat sink assembly 300 includes fans 310 respectively disposed on both sides of the rotating base assembly 100. Each fan 310 has an air duct 320 at its output end, and the air outlet of each air duct 320 serves as an output outlet facing different positions of the light source. It can be understood that the coordinated arrangement of the fans 310 and the air ducts 320 effectively dissipates heat from the bulb.

[0056] In some embodiments, the bulb is mounted on the bulb rotating base via a light source pressure plate, and two air ducts 320 are respectively installed on both sides of the bulb rotating base before the fan 310 is installed.

[0057] In some embodiments of this application, after the bulb is lit, the central bulb and lamp post heat up and glow, and the fan 310 starts working, dissipating heat from the bulb through the guiding effect of the air duct 320. As the lamp moves at different angles, the control program controls the drive motor to move, and the movement of the drive motor drives the crank 420, which in turn drives the connecting rod swing plate 110 to swing, thereby causing the bulb to move back and forth on the bulb rotating seat. With the back and forth movement of the bulb, the fan 310 can provide a cooling effect to different positions of the bulb and lamp post, so that the heat of the bulb and lamp post is evenly distributed, preventing local high temperature phenomena, thereby improving the service life of the bulb.

[0058] Since the light bulb is a heat source, the structures surrounding it are subject to significant heat radiation. To ensure smooth rotation, the bulb's rotating base utilizes ceramic balls and a ball cage 142. The ceramic balls are heat-resistant and exhibit less deformation at high temperatures than metal materials, and also possess inherent lubricating properties. The ball cage 142 ensures smooth and stable operation without jamming, even after the balls expand due to heat near the bulb. By combining a crank 420 connecting rod structure with a bearing-like structure, noise generation is reduced, while significantly improving bulb heat dissipation, allowing the lighting fixture to better evolve towards lower noise and longer lifespan.

[0059] Reference Figures 1 to 2 The stage lighting fixture of the second aspect of this application includes the heat dissipation mechanism of the first aspect of this application. A discharge bulb is driven to rotate via a crank 420 connecting rod mechanism, while the cooling fan 310 remains stationary, thereby improving the stability and reliability of the heat dissipation system. Simultaneously, because the bulb can rotate, it avoids continuous heating of a single location, preventing uneven heating and the risk of breakage, thus extending the bulb's lifespan. Specifically, a bearing-like rotating mechanism is provided on the bulb's rotating base to improve the stability of the bulb's rotation and prevent light flickering. Furthermore, a ball bearing retainer 142 is provided on the bulb's rotating base to maintain a certain distance between the balls. Since the ceramic balls are heat-resistant and have a smaller high-temperature deformation coefficient than the ball bearing retainer 142, it prevents jamming caused by thermal expansion of the balls due to the bulb's high temperature.

[0060] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A heat dissipation mechanism, characterized in that, include: A rotating base assembly, including a rotatable mounting structure; A light source component is mounted on the mounting structure; A heat sink assembly includes an output port facing the light source component; A driving component is used to drive the mounting structure to rotate so that the output port can dissipate heat to different positions of the light source component.

2. The heat dissipation mechanism according to claim 1, characterized in that: The heat dissipation mechanism also includes a control device for controlling the drive component.

3. The heat dissipation mechanism according to claim 2, characterized in that: The control device is used to control the drive assembly to intermittently drive the mounting structure to rotate; Alternatively, the heat dissipation mechanism may also include a sensor for detecting temperature difference information at different locations in the light source component, and the control device is configured to control the drive component based on the temperature difference information detected by the sensor.

4. The heat dissipation mechanism according to any one of claims 1 to 3, characterized in that: The drive assembly includes a drive element, a crank, and a swing arm. One end of the crank is connected to the drive element, the other end of the crank is connected to one end of the swing arm, and the other end of the swing arm is connected to the mounting structure.

5. The heat dissipation mechanism according to claim 4, characterized in that: The connection between the crank and the swing arm is provided with a connection gap to reduce vibration; And / or the shape of the swing rod is arc-shaped.

6. The heat dissipation mechanism according to claim 1, characterized in that: The rotating seat assembly includes a connecting rod swing plate, a lower ball bearing seat, an upper ball bearing seat, and a ball bearing assembly. The connecting rod swing plate and the upper ball bearing seat are at least part of the mounting structure used to house the light source component. The connecting rod swing plate is used to connect with the drive assembly. The lower ball bearing seat is disposed on the outer periphery of the light source component and surrounds the upper ball bearing seat. The ball bearing assembly is disposed between the lower ball bearing seat and the light source component.

7. The heat dissipation mechanism according to claim 6, characterized in that: The ball assembly includes a plurality of ball bodies and a ball retainer, the ball retainer being used to separate adjacent ball bodies.

8. The heat dissipation mechanism according to claim 7, characterized in that: The ball bearing body and the ball bearing cage are made of ceramic material.

9. The heat dissipation mechanism according to claim 1, characterized in that: The heat sink assembly includes fans respectively disposed on both sides of the rotating base assembly, each fan having an air duct at its output end, and the air outlet of each air duct facing different positions of the light source.

10. A stage lighting fixture, characterized in that, include: The heat dissipation mechanism as described in any one of claims 1 to 9.

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