A silent spotlight

Abstract

This application relates to a silent spotlight, comprising a housing, a circuit assembly, and a lamp assembly. The housing has a first cavity, a second cavity, and a heat dissipation cavity. The lamp assembly is disposed within the first cavity, and the circuit assembly is disposed within the second cavity. A heat dissipation structure is provided within the heat dissipation cavity, including a plurality of heat dissipation protrusions formed on the side of the heat dissipation cavity near the second cavity. The heat dissipation structure also includes a plurality of heat dissipation fins connected to the cavity wall of the first cavity. This application, by providing a heat dissipation cavity and heat dissipation structure, can effectively dissipate heat, eliminating the need for a fan and thus avoiding the operating noise caused by fan operation, making it more suitable for stage use.

Description

Technical Field

[0001] This application relates to the technical field of spotlights, specifically to a silent spotlight. Background Technology

[0002] A spotlight is a type of lighting fixture that emits a focused beam of light and is often used in stage performances. Both the light assembly and the circuit board generate heat when they are working. Most spotlights in the prior art use fans for heat dissipation. For example, CN217843708U discloses a spotlight that uses an internal cooling fan for heat dissipation.

[0003] Cooling fans generate noise during operation due to component rotation and airflow disturbance. In particular, in actual stage scenarios, multiple spotlights are often used simultaneously, which means that multiple sets of cooling fans are running at the same time. This generates significant operating noise, affecting stage performances and the normal use of spotlights. Utility Model Content

[0004] To address the problems existing in the prior art, this application aims to provide a silent spotlight. By incorporating a heat dissipation cavity and structure, this application effectively dissipates heat, eliminating the need for a fan and thus avoiding the noise generated by fan operation, making it more suitable for stage use.

[0005] The silent spotlight described in this application includes a housing, a circuit assembly, and a lamp assembly. The housing has a first cavity at one end, a second cavity at the other end, and a heat dissipation cavity between the first cavity and the second cavity. The lamp assembly is disposed in the first cavity, and the circuit assembly is disposed in the second cavity. A heat dissipation structure is provided in the heat dissipation cavity. The heat dissipation structure includes a plurality of heat dissipation protrusions formed on the side of the heat dissipation cavity near the second cavity. The heat dissipation protrusions are arranged around the center of the heat dissipation cavity.

[0006] The heat dissipation structure further includes a plurality of heat dissipation fins, which are connected to the cavity wall of the first cavity. Each heat dissipation fin includes a first heat dissipation fin and a second heat dissipation fin. The length of the first heat dissipation fin is greater than the length of the second heat dissipation fin. Both the first heat dissipation fin and the second heat dissipation fin extend along a first direction. A plurality of the first heat dissipation fins and the second heat dissipation fins are alternately arranged along a second direction perpendicular to the first direction to form a heat dissipation channel between adjacent heat dissipation fins.

[0007] One of the heat sinks is located at the axis of the heat dissipation cavity as the central heat sink, and the remaining heat sinks are arranged on both sides of the central heat sink. Both ends of the remaining heat sinks have a first wing that bends in a direction away from the axis of the heat dissipation cavity, and the bending angle of the first wing increases progressively in the direction away from the central heat sink.

[0008] Preferably, the housing includes a front cover assembly, a rear cover assembly, and connecting portions connected to the front cover assembly and the rear cover assembly respectively. The first cavity is located inside the front cover assembly, the second cavity is located inside the rear cover assembly, and there are two connecting portions, located on both sides of the heat dissipation cavity respectively.

[0009] Preferably, the circuit assembly is electrically connected to the lamp group via a connecting wire, the connecting part is hollow inside, and the connecting wire passes through the connecting part.

[0010] Preferably, the outer surface of the connecting portion extends outward to form a second wing.

[0011] Preferably, the heat sinks located on both sides extend to the side of the first wing to form a third wing that is misaligned with the first wing.

[0012] Preferably, the heat sink is a U-shaped plate with a downwardly recessed through groove in its middle.

[0013] Preferably, the front cover assembly includes a first base and a front cover plate. The front end of the first base is recessed inward to form the first cavity. The lamp assembly is disposed in the first cavity. The front cover plate covers the first cavity. A first sealing element is provided between the front cover plate and the first base.

[0014] Preferably, the rear cover assembly includes a second base and a rear cover cover, the rear cover cover having a second cavity formed inside, the circuit assembly being disposed in the second cavity, the second base covering the second cavity, and a second sealing element being provided between the second base and the rear cover cover.

[0015] Preferably, the silent spotlight further includes a support arm, which is disposed on the outside of the connecting part and rotatably connected to the connecting part.

[0016] The silent spotlight described in this application has the advantage of placing the two main heat-generating modules, the circuit assembly and the lamp assembly, at opposite ends of the housing. A heat dissipation cavity is set between the circuit assembly and the lamp assembly, and a heat dissipation structure is set inside the heat dissipation cavity. The heat generated by the circuit assembly can be transferred to the heat dissipation cavity more efficiently through the heat dissipation protrusions. At the same time, for the lamp assembly with large heat generation, multiple heat sinks are set in thermal contact with the first cavity. The heat emitted by the lamp assembly in the first cavity is transferred to the heat dissipation cavity through the heat sinks, dissipated into the heat dissipation channel through the side of the heat sinks, and then flows out of the heat dissipation cavity along the heat dissipation channel. This achieves effective heat dissipation for the lamp assembly and the circuit assembly, meeting the heat dissipation requirements without the need for a fan, avoiding the problem of working noise when the fan is running, and making it more suitable for stage performance scenarios. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a silent spotlight described in this application;

[0018] Figure 2 This is an exploded view of a silent spotlight described in this application;

[0019] Figure 3 This is one of the schematic diagrams of the internal structure of the second cavity in this application;

[0020] Figure 4 This is the second schematic diagram of the internal structure of the second cavity in this application;

[0021] Figure 5 This is a schematic diagram of the installation structure of the heat sink described in this application;

[0022] Figure 6 yes Figure 5 It is a top view;

[0023] Figure 7 This is a structural schematic diagram of the second base of this application.

[0024] Explanation of reference numerals in the attached drawings: 1-Housing, 1a-First cavity, 1b-Second cavity, 1c-Heat dissipation cavity, 11-Front cover assembly, 12-Rear cover assembly, 121-Second base, 1211-Heat dissipation protrusion, 122-Rear cover, 13-Connecting part, 131-Second wing, 2-Circuit assembly, 3-Lamp assembly, 4-Heat dissipation fin, 4a-First heat dissipation fin, 4b-Second heat dissipation fin, 41-First wing, 42-Third wing, 5-Swing arm. Detailed Implementation

[0025] like Figures 1-7 As shown, the silent spotlight described in this application includes a housing 1, a circuit assembly 2, and a lamp group 3. Specifically, the housing 1 has a near-cylindrical structure and has a first cavity 1a located at the front end, a second cavity 1b located at the rear end, and a heat dissipation cavity 1c located between the first cavity 1a and the second cavity 1b.

[0026] The lamp assembly 3 is located in the first cavity 1a at the front end, and the circuit assembly 2 is located in the second cavity 1b. These are the two main heating elements of the spotlight. The lamp assembly 3 and the circuit assembly 2 are respectively located at the front and rear ends of the housing 1. In this embodiment, the circuit assembly 2 adopts a conventional spotlight control circuit and is integrated into a PCB circuit board.

[0027] The heat dissipation cavity 1c is located between the first cavity 1a and the second cavity 1b, so that the heat emitted by the lamp group 3 in the first cavity 1a and the circuit component 2 in the second cavity 1b can be conducted to the heat dissipation cavity 1c.

[0028] The heat dissipation cavity 1c is equipped with a heat dissipation structure to enhance the heat dissipation effect. Please refer to the details. Figure 7 The heat dissipation structure includes several heat dissipation protrusions 1211 formed on the side of the heat dissipation cavity 1c near the second cavity 1b. The heat dissipation protrusions 1211 protrude from the surface at a certain height, such as... Figure 7 The disc-shaped base shown has a heat dissipation protrusion 1211 including several annular protrusions and multiple elongated protrusions distributed in a star shape. The heat dissipation protrusion 1211 can increase the area of ​​the heat dissipation cavity 1c near the second cavity 1b, thereby increasing the heat dissipation area and improving the heat dissipation efficiency of the circuit component 2 in the second cavity 1b, so that the heat generated by its operation can be quickly conducted to the heat dissipation cavity 1c, thereby reducing the temperature in the second cavity 1b.

[0029] The heat dissipation structure also includes several heat sinks 4, which are connected to the cavity wall of the first cavity 1a to form thermal contact. Please refer to the figure for details. Figure 6 The heat sink 4 includes a first heat sink 4a and a second heat sink 4b of different lengths, with the first heat sink 4a being longer than the second heat sink 4b. Both the first heat sink 4a and the second heat sink 4b extend along a first direction, and several of these heat sinks are arranged along a second direction perpendicular to the first direction to form heat dissipation channels between adjacent heat sinks 4. The first heat sink 4a and the second heat sink 4b form thermal contact with the front-end first cavity 1a. The lamp assembly 3 is disposed within the first cavity 1a. When the lamp assembly 3 operates and generates heat, the heat is transferred to the heat sink 4, through which the heat can be dissipated outwards.

[0030] One heat sink 4 is located at the axis of the heat dissipation cavity 1c as the central heat sink, and the remaining heat sinks are arranged on both sides of the central heat sink. The ends of the remaining heat sinks have first fins 41 that are bent in a direction away from the axis of the heat dissipation cavity 1c. The first fins 41 can increase the contact area between the end of the heat sink 4 and the external air, thereby improving the heat dissipation efficiency. Furthermore, the bending angle of the first fins 41 increases progressively away from the central heat sink 4, that is, the bending angle of the end of the heat sink 4 on the outer side is greater than that of the end of the heat sink 4 in the middle. This structural design takes into account that some of the heat from the heat sink 4 in the middle will be conducted to the heat sink 4 on the outer side. That is, the heat from the heat sink 4 on the outer side is usually slightly higher than that from the heat sink 4 in the middle. Therefore, a larger heat dissipation area and a wider heat dissipation channel are needed to ensure that the heat sink 4 on the outer side can effectively dissipate heat. Therefore, the heat sink 4 on the outer side is set to have a larger bending angle to make the heat dissipation structure more reasonable.

[0031] Furthermore, in this embodiment, the housing 1 includes a front cover assembly 11, a rear cover assembly 12, and a connecting portion 13 connecting the front cover assembly 11 and the rear cover assembly 12. The front cover assembly 11 is located at the front end, and a first cavity 1a is formed within the front cover assembly 11 for mounting the lamp assembly 3. The rear cover assembly 12 is located at the rear end, and a second cavity 1b is formed within the rear cover assembly 12 for mounting circuit components 2, etc. The connecting portion 13 is located between the front cover assembly 11 and the rear cover assembly 12, and is located on both sides of the heat dissipation cavity 1c, for connecting the front cover assembly 11 and the rear cover assembly 12, so that the housing 1 forms an integral structure. The structure of the housing 1 in this embodiment makes the overall structure of the housing 1 compact and the layout reasonable.

[0032] Furthermore, in this embodiment, the circuit component 2 and the lamp group 3 are electrically connected through a connecting wire. The connecting part 13 is hollow inside to form a through cavity, and the connecting wire passes through the connecting part 13 to realize the circuit connection between the circuit component 2 and the lamp group 3.

[0033] Furthermore, in this embodiment, the outer surface of the connecting part 13 extends outward to form a second wing 131. When the lamp group 3 and the circuit assembly 2 are working and generating heat, some of the heat will be conducted to the connecting part 13 through the body of the housing 1. The connecting part 13 is provided with an outwardly extending second wing 131, which can increase the contact area between the connecting part 13 and the outside air, thereby improving the overall heat dissipation effect of the spotlight.

[0034] Furthermore, in this embodiment, the heat sinks 4 located on both sides, that is, the heat sinks 4 near the outer edge, extend outward from the side of the first wing 41 to form a third wing 42 that is misaligned with the first wing 41. As mentioned above, the heat at the outer heat sink 4 is slightly higher than that at the middle position. Therefore, by adding the third wing 42, the heat dissipation effect of the outer heat sink 4 is further enhanced.

[0035] Furthermore, in this embodiment, the heat sink 4 is a U-shaped plate with a downwardly recessed groove in its middle. The groove in the middle of the heat sink 4 can form an airflow channel between the heat sinks 4, allowing heat to flow outward from the heat dissipation cavity 1c for heat dissipation. Furthermore, the height of both ends of the first heat sink 4a is greater than the height of both ends of the second heat sink 4b, so that the first heat sink 4a and the second heat sink 4b are staggered, which facilitates installation.

[0036] Furthermore, in this embodiment, the front cover assembly 11 specifically includes a first base and a front cover plate. The front end of the first base is recessed inward to form a first cavity 1a. The lamp group 3 is disposed in the first cavity 1a. The front cover plate covers the first cavity 1a, and a first sealing element is provided between the front cover plate and the first base. The first sealing element is specifically a sealing ring. The structure of the front cover assembly 11 has the advantages of easy assembly and good sealing and waterproof performance.

[0037] Furthermore, in this embodiment, the rear cover assembly 12 includes a second base 121 and a rear cover cover 122. The rear cover cover 122 has a second cavity 1b inside. The circuit assembly 2 is disposed in the second cavity 1b. The second base 121 covers the second cavity 1b. A second sealing element (not shown in the figure) is provided between the second base 121 and the rear cover cover 122. The rear cover cover 122 is dome-shaped, and the second base 121 is a circular plate. The two are connected by bolts to form the rear cover assembly 12 structure. A second sealing element, i.e. a sealing ring, is provided at the connection position to form a waterproof sealing structure.

[0038] Furthermore, in this embodiment, the spotlight also includes a support arm 5, which is disposed on the outside of the connecting part 13 and rotatably connected to the connecting part 13. Specifically, the support arm 5 and the connecting part 13 form a damped hinge structure through a damping pivot, and the support arm 5 is used to support the spotlight when it is opened.

[0039] This application sets the two main heat-generating modules, circuit assembly 2 and lamp group 3, at opposite ends of housing 1. A heat dissipation cavity 1c is set between circuit assembly 2 and lamp group 3, and a heat dissipation structure is set inside the heat dissipation cavity 1c. The heat generated by circuit assembly 2 can be more efficiently transferred to the heat dissipation cavity 1c through heat dissipation protrusion 1211. At the same time, for lamp group 3, which generates a lot of heat, multiple heat sinks 4 are set in thermal contact with the first cavity 1a. The heat emitted by lamp group 3 in the first cavity 1a is transferred to the heat dissipation cavity 1c through the heat sinks 4, and then dissipated into the heat dissipation channel through the side of the heat sinks 4 and flows out of the heat dissipation cavity 1c along the heat dissipation channel. This achieves effective heat dissipation for lamp group 3 and circuit assembly 2. The heat dissipation requirements can be met without the need for a fan, avoiding the problem of working noise when the fan is running, and is more suitable for stage performance scenarios.

[0040] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application.

[0041] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this application.

Claims

1. A silent spotlight comprising a housing, an electrical circuit assembly and a lamp set, characterized in that, The housing has a first cavity at one end and a second cavity at the other end, and a heat dissipation cavity between the first cavity and the second cavity. The lamp assembly is disposed in the first cavity, the circuit assembly is disposed in the second cavity, and a heat dissipation structure is provided in the heat dissipation cavity. The heat dissipation structure includes a plurality of heat dissipation protrusions formed on the side of the heat dissipation cavity near the second cavity, and the heat dissipation protrusions are arranged around the center of the heat dissipation cavity. The heat dissipation structure further includes a plurality of heat dissipation fins, which are connected to the cavity wall of the first cavity. Each heat dissipation fin includes a first heat dissipation fin and a second heat dissipation fin. The length of the first heat dissipation fin is greater than the length of the second heat dissipation fin. Both the first heat dissipation fin and the second heat dissipation fin extend along a first direction. A plurality of the first heat dissipation fins and the second heat dissipation fins are alternately arranged along a second direction perpendicular to the first direction to form a heat dissipation channel between adjacent heat dissipation fins. One of the heat sinks is located at the axis of the heat dissipation cavity as the central heat sink, and the remaining heat sinks are arranged on both sides of the central heat sink. Both ends of the remaining heat sinks have a first wing that bends in a direction away from the axis of the heat dissipation cavity, and the bending angle of the first wing increases progressively in the direction away from the central heat sink.

2. The silent spotlight according to claim 1, wherein The housing includes a front cover assembly, a rear cover assembly, and connecting portions connected to the front cover assembly and the rear cover assembly respectively. The first cavity is located inside the front cover assembly, the second cavity is located inside the rear cover assembly, and there are two connecting portions, located on both sides of the heat dissipation cavity respectively.

3. The silent spotlight according to claim 2, wherein The circuit assembly is electrically connected to the lamp group via a connecting wire. The connecting part is hollow inside, and the connecting wire passes through the connecting part.

4. The silent spotlight of claim 3, wherein The outer surface of the connecting part extends outward to form a second wing.

5. The silent spotlight of claim 1, wherein, The heat sinks located on both sides extend to the side of the first wing to form a third wing that is misaligned with the first wing.

6. The silent spotlight of claim 1, wherein, The heat sink is a U-shaped plate with a downward-recessed through groove in the middle.

7. The silent spotlight of claim 2, wherein, The front cover assembly includes a first base and a front cover plate. The front end of the first base is recessed inward to form the first cavity. The lamp assembly is disposed in the first cavity. The front cover plate covers the first cavity. A first sealing element is provided between the front cover plate and the first base.

8. The silent spotlight of claim 2, wherein, The rear cover assembly includes a second base and a rear cover cover. The rear cover cover has a second cavity formed inside it. The circuit assembly is disposed in the second cavity. The second base covers the second cavity. A second sealing element is provided between the second base and the rear cover cover.

9. The silent spotlight of claim 2, wherein, It also includes a support arm, which is disposed on the outside of the connecting part and rotatably connected to the connecting part.

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