Heat dissipation structure and light supplementing lamp

Abstract

The utility model provides a heat dissipation structure and a supplementary light, belonging to the technical field of supplementary lights. The heat dissipation structure is installed on the supplementary light, and the supplementary light includes a housing. A first installation cavity and a second installation cavity which are communicated with each other are arranged in the housing. A control circuit board is arranged on the first installation cavity, and a light source is arranged in the second installation cavity; the heat dissipation structure includes a first radiator disposed on one side of the light source and a heat dissipation fan. A plurality of rib plates are arranged on the first radiator, and a ventilation air duct is formed between adjacent two rib plates; the heat dissipation fan is arranged in the rib plates of the first radiator. The heat dissipation structure can dissipate heat from the control circuit board and the light source of the supplementary light, extend the service life of the supplementary light, and enable the supplementary light to work stably.

Description

Technical Field

[0001] This utility model relates to the field of supplementary lighting technology, and in particular to a heat dissipation structure and a supplementary lighting. Background Technology

[0002] With the rapid development of photography, live streaming, and short videos, the performance requirements for fill lights, as core devices providing stable light sources, are increasing. To meet the demands for high brightness, wide color temperature adjustment, and adaptability to various scenarios, fill lights are increasingly being upgraded in power (e.g., 100W and above), especially LED light sources, which have become the mainstream choice due to their high energy efficiency, good color rendering, and fast response speed. However, LED chips generate a significant amount of heat during operation, and their luminous efficiency is closely related to operating temperature: when the temperature exceeds a critical value, the luminous flux of the LED will significantly decrease, the color temperature drift will increase, and it may even cause the chip solder to melt, accelerate circuit aging, and severely shorten the lifespan of the fill light. Furthermore, the temperature rise of the fill light controller during operation also affects the normal operation of the fill light.

[0003] Existing technology CN223065632U discloses a portable fill light. This fill light improves the flexibility of its illumination angle adjustment by detachably connecting a pitch adjustment mechanism to the lamp housing or adapter ring for adjusting the lamp's tilt angle. Furthermore, the detachable connection between the pitch adjustment mechanism and the lamp housing allows both the lamp housing and the pitch adjustment mechanism to be small in size after disassembly, making them easily portable and fitting in a pocket. However, the main heat sink of this fill light primarily dissipates heat from the light source and cannot effectively dissipate heat from the controller, making it difficult to suppress the controller's temperature rise.

[0004] Therefore, the fill light needs to be improved to overcome the shortcomings of the existing technology. Utility Model Content

[0005] To overcome the problems existing in the related technology, one of the objectives of this utility model is to provide a heat dissipation structure that can dissipate heat from the control circuit board and light source of the fill light, thereby extending the service life of the fill light and making the fill light work stably.

[0006] A heat dissipation structure is installed on a fill light, the fill light including a housing, the housing having a first mounting cavity and a second mounting cavity that are interconnected.

[0007] A control circuit board is provided on the first mounting cavity, and a light source is provided in the second mounting cavity; the heat dissipation structure includes a first heat sink and a cooling fan provided on one side of the light source, and multiple ribs are provided on the first heat sink, with a ventilation channel formed between two adjacent ribs;

[0008] The cooling fan is disposed in the ribs of the first radiator.

[0009] In a preferred embodiment of this utility model, a mounting position is provided in the middle of the rib plate, and the cooling fan is disposed in the mounting position;

[0010] The light source is fixed to one side of the first heat sink, and thermally conductive silicone grease is applied between the light source and the first heat sink.

[0011] In a preferred embodiment of this invention, the housing includes a bottom shell and a face mask, the face mask being snapped onto the bottom shell, and the first mounting cavity and the second mounting cavity being disposed between the bottom shell and the face mask.

[0012] In a preferred embodiment of this invention, ventilation grilles are provided on both the side walls and the top wall of the bottom shell.

[0013] In a preferred embodiment of this invention, a second heat sink is further provided in the first mounting cavity, and the second heat sink is disposed on one side of the control circuit board.

[0014] In a preferred embodiment of this invention, the control circuit board is provided with a display module, a control knob, and an energy storage power supply, all of which are electrically connected to the control circuit board.

[0015] In a preferred embodiment of this invention, a power interface is provided on the outer wall of the housing, and the power interface is electrically connected to the energy storage power source; connecting studs are provided on both sides of the power interface, the connecting studs are fixed on the housing, and the connecting studs are provided with threaded holes; a limit strip is provided between the connecting studs.

[0016] In a preferred embodiment of this utility model, the housing is provided with an installation joint, the installation joint including a mounting base and a connecting sleeve, the mounting base being fixed on the housing, and the connecting sleeve being hinged to the mounting base;

[0017] The mounting base is provided with a first connection port, and a first adjusting screw is provided on one side of the first connection port. One end of the first adjusting screw passes through the first connection port and extends into the first connection port.

[0018] The side wall of the connecting sleeve is provided with a second adjusting screw, one end of which extends through the side wall of the connecting sleeve and into the connecting sleeve.

[0019] The second objective of this utility model is to provide a supplementary light, which includes the heat dissipation structure described above.

[0020] The beneficial effects of this utility model are as follows:

[0021] This utility model provides a heat dissipation structure and a supplementary light. The heat dissipation structure is installed on the supplementary light, which includes a housing with a first mounting cavity and a second mounting cavity that are interconnected. A control circuit board is mounted on the first mounting cavity, and a light source is mounted in the second mounting cavity. The heat dissipation structure includes a first heat sink and a cooling fan located on one side of the light source. The first heat sink has multiple ribs, with ventilation channels formed between adjacent ribs. The cooling fan is located within the ribs of the first heat sink. This heat dissipation structure can utilize the cooling fan to draw in outside air, and the cool outside air can simultaneously dissipate heat from the light source and the control circuit board through the ventilation channels. This effectively controls the temperature of the light source and the circuit board, preventing overheating that could cause them to malfunction and extending the overall lifespan of the supplementary light. Attached Figure Description

[0022] Figure 1 This is a perspective view of the heat dissipation structure provided in the embodiment of this utility model being installed on the supplementary light;

[0023] Figure 2 This is a front view of the heat dissipation structure provided in an embodiment of this utility model, mounted on a supplementary light.

[0024] Figure 3 This is a perspective view of the light source side of the supplementary light provided in an embodiment of this utility model;

[0025] Figure 4 This is a perspective view of one side of the display module of the supplementary light provided in an embodiment of this utility model.

[0026] Figure label:

[0027] 1. First radiator; 11. Rib; 111. Ventilation duct; 2. Cooling fan; 3. Control circuit board; 4. Control knob; 5. Display module; 6. Light source; 7. Mounting connector; 8. Heat sink; 71. Mounting base; 711. First connection port; 712. First adjusting screw; 72. Connecting sleeve; 721. Second adjusting screw; 100. Housing; 110. Bottom shell; 1101. First mounting cavity; 1102. Second mounting cavity; 1103. Ventilation grille; 1104. Power interface; 1105. Limiting strip; 1106. Connecting stud; 120. Face shield; Detailed Implementation

[0028] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0029] Existing technology discloses a portable fill light. This fill light improves the flexibility of its illumination angle adjustment by detachably connecting a tilt adjustment mechanism to the lamp housing or adapter ring for adjusting the lamp's tilt angle. Furthermore, the detachable connection between the tilt adjustment mechanism and the lamp housing allows both the lamp housing and the tilt adjustment mechanism to be small in size after disassembly, making them pocket-sized and significantly improving portability. However, the main heat sink of the fill light primarily dissipates heat from the light source and cannot effectively dissipate heat from the controller, making it difficult to suppress the controller's temperature rise.

[0030] Based on this, this application provides a heat dissipation structure.

[0031] Example 1

[0032] like Figures 1-4 As shown, this embodiment provides a heat dissipation structure, which is installed on a fill light. The fill light includes a housing 100, in which a first mounting cavity 1101 and a second mounting cavity 1102 are provided in communication with each other.

[0033] A control circuit board 3 is provided on the first mounting cavity 1101, and a light source 6 is provided in the second mounting cavity 1102; the heat dissipation structure includes a first heat sink 1 and a cooling fan 2 provided on one side of the light source 6, and a plurality of ribs 11 are provided on the first heat sink 1, with a ventilation duct 111 formed between two adjacent ribs 11.

[0034] The cooling fan 2 is disposed in the rib 11 of the first radiator 1.

[0035] Specifically, the first radiator 1 is manufactured using a forging process, with the main body material being aluminum alloy and a base thickness of 8mm. It has 60 vertically distributed heat dissipation fins 11. The thickness of each heat dissipation fin 11 can be 1.0mm, the height is 30mm, and the spacing between adjacent heat dissipation fins 11 is 2.5mm, forming 59 parallel ventilation channels 111, thereby increasing the heat dissipation area of ​​the first radiator 1.

[0036] Cooling fan 2 is a DC inverter fan with a built-in NTC thermistor communicating with control circuit board 3 to achieve PWM speed control. After cooling fan 2 starts, it draws in cool outside air (ambient temperature 25℃) through the air inlet. The airflow passes through ventilation duct 111, where forced convection carries away the heat from the first heat sink 1, directly cooling the light source 6 module. A portion of the airflow flows into the first mounting cavity 1101, forming a flowing air film below control circuit board 3, carrying away the heat generated by the electronic components. Both airflows exit the housing 100 through ventilation openings on the side wall of the housing 100.

[0037] The supplementary light uses a heat dissipation structure to cool the space between the two mounting cavities, which optimizes the heat dissipation path. This not only achieves effective heat dissipation between the circuit board and the light source 6, but also saves on heat dissipation components, thereby reducing manufacturing costs.

[0038] The aforementioned heat dissipation structure is installed on a supplementary light. The supplementary light includes a housing 100, within which a first mounting cavity 1101 and a second mounting cavity 1102 are interconnected. A control circuit board 3 is mounted on the first mounting cavity 1101, and a light source 6 is mounted in the second mounting cavity 1102. A first heat sink 1 is mounted on one side of the light source 6, and multiple ribs 11 are mounted on the first heat sink 1, with ventilation channels 111 formed between adjacent ribs 11. A cooling fan 2 is mounted on one side of the first heat sink 1. This heat dissipation structure utilizes the cooling fan 2 to draw in outside air, and the cool outside air can simultaneously dissipate heat from the light source 6 and the control circuit board 3 through the ventilation channels 111. This effectively controls the temperature of the light source 6 and the circuit board, preventing overheating that could cause the light source 6 and the circuit board to malfunction, and also extends the overall lifespan of the supplementary light.

[0039] Specifically, the rib plate 11 has a mounting position in the middle, and the cooling fan 2 is disposed in the mounting position;

[0040] The light source 6 is fixed to one side of the first heat sink 1, and thermally conductive silicone grease is applied between the light source 6 and the first heat sink 1.

[0041] The fan's embedded design in the middle of rib 11 reduces the overall thickness of the heatsink, improving the portability of the auxiliary light. The rigid mounting position reduces resonance noise, and combined with the low-speed strategy of the cooling fan 2 during use, it reduces the noise level of the auxiliary light. By reducing the contact thermal resistance between the light source 6 and the heatsink, the heat transfer speed is increased, thereby improving heat dissipation efficiency.

[0042] In a specific embodiment, the housing 100 includes a bottom shell 110 and a face mask 120, the face mask 120 being snapped onto the bottom shell 110, and the first mounting cavity 1101 and the second mounting cavity 1102 being disposed between the bottom shell 110 and the face mask 120.

[0043] Furthermore, ventilation grilles 1103 are provided on the side walls and top walls of the bottom shell 110.

[0044] Specifically, the bottom shell 110 is made of plastic and coated with a high-temperature resistant matte paint. An integrally molded transverse partition can be set inside to divide the first mounting cavity 1101 and the second mounting cavity 1102. The face shield 120 is made of transparent PC material, and the edge of the face shield 120 has 4 elastic buckles that engage with the corresponding slots on the bottom shell 110.

[0045] Ventilation grilles 1103 are located on both sides of the first mounting cavity 1101 and are designed in the form of louvers. The ventilation grilles 1103 on the top wall of the bottom shell 110 cover the top of the second mounting cavity 1102 and can adopt a honeycomb structure.

[0046] The side wall ventilation grille 1103, together with the original bottom air inlet, forms a three-dimensional air intake system, which can increase the total air intake volume and thus improve heat dissipation efficiency.

[0047] Furthermore, a second heat sink is also provided in the first mounting cavity 1101, and the second heat sink is located on one side of the control circuit board 3.

[0048] The second radiator complements the ventilation grille 1103 and the first radiator 1. The cold air introduced by the side wall ventilation grille 1103 flows preferentially through the fins of the second radiator, enhancing convection heat dissipation and improving the overall heat dissipation effect, further consolidating the reliability of the equipment under long-term high-intensity scenarios.

[0049] Furthermore, the control circuit board 3 is provided with a display module 5, a control knob 4, and an energy storage power supply, all of which are electrically connected to the control circuit board 3.

[0050] Specifically, display module 5 is a display screen used to dynamically display key parameters of the fill light, including current power, color temperature, remaining battery power, internal temperature, and operating mode (constant on / flicker / special effects). For example, when the temperature of the light source 6 approaches a critical value, the screen automatically flashes a red temperature icon to remind the user to adjust the power or switch the heat dissipation mode to avoid performance degradation due to overload. The energy storage power supply eliminates the need for an external power source, making the fill light more convenient to use. The control knob 4 is used to control the operation of the entire fill light.

[0051] Furthermore, a power interface 1104 is provided on the outer wall of the housing 100, and the power interface 1104 is electrically connected to the energy storage power supply; connecting studs 1106 are provided on both sides of the power interface 1104, the connecting studs 1106 are fixed on the housing 100, and the connecting studs 1106 are provided with threaded holes; a limit strip 1105 is provided between the connecting studs 1106.

[0052] The power interface 1104 serves as a supplementary interface for the energy storage power supply, allowing it to be charged via an external PD charger.

[0053] Preferably, a silicone dust cover can be provided at the power interface 1104 to automatically close when not in use. The power interface 1104 achieves an IP54 dust and water resistance rating (resistant to dust intrusion and low-pressure water spray). The connecting stud 1106 is used to lock the power connector and prevent it from falling off during use. The limiting strip 1105 not only limits the position of the power connector but also improves the structural stability of the connecting stud 1106.

[0054] Furthermore, the housing 100 is provided with a mounting joint 7, which includes a mounting base 71 and a connecting sleeve 72. The mounting base 71 is fixed on the housing 100, and the connecting sleeve 72 is hinged to the mounting base 71.

[0055] The mounting base 71 is provided with a first connection port 711, and a first adjusting screw 712 is provided on one side of the first connection port 711. One end of the first adjusting screw 712 passes through the first connection port 711 and extends into the first connection port 711.

[0056] The side wall of the connecting sleeve 72 is provided with a second adjusting screw 721, one end of which passes through the side wall of the connecting sleeve 72 and extends into the connecting sleeve 72.

[0057] Specifically, the connecting sleeve 72 is a cylindrical sleeve made of PA66 + glass fiber material. It is hinged to the mounting base 71 via a stainless steel pin, allowing for 0°-180° rotation adjustment. During use, rotating the connecting sleeve 72 around the pin allows for angle fixation at 0° (horizontal forward), 90° (vertical downward), and 180° (horizontal backward) via positioning points, meeting the lighting needs of top lighting, side lighting, bottom lighting, and other directions.

[0058] The first adjusting screw 712 is a stainless steel screw with a knurled knob at the head and a rubber anti-slip pad at the tail. The screw passes through the side wall of the mounting base 71 and is perpendicular to the first connection port 711. The screw clamps the inserted parts through threaded feed.

[0059] The second adjusting screw 721 has the same structure as the first adjusting screw 712, and it penetrates vertically through the side wall of the connecting sleeve 72 to fix the accessories inserted into the connecting sleeve 72.

[0060] In use, the lamp holder pole is inserted into the first connecting port 711, and the first adjusting screw 712 is tightened, ensuring a tight fit between the rubber pad and the pole. Additionally, the connecting sleeve 72 can also connect other mounting components, thereby expanding the applicability of this supplementary lighting.

[0061] Example 2

[0062] like Figures 1-4 As shown, this embodiment provides a supplementary light, which includes the heat dissipation structure described above. This supplementary light has good heat dissipation and a long service life.

[0063] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings. 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; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0064] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0065] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. The above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. For those skilled in the art, this utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A heat dissipation structure, mounted on a supplementary light, the supplementary light comprising a housing, wherein the housing has a first mounting cavity and a second mounting cavity communicating with each other; characterized in that: A control circuit board is provided on the first mounting cavity, and a light source is provided in the second mounting cavity; the heat dissipation structure includes a first heat sink and a cooling fan provided on one side of the light source, and multiple ribs are provided on the first heat sink, with a ventilation channel formed between two adjacent ribs; The cooling fan is disposed in the ribs of the first radiator.

2. The heat dissipation structure according to claim 1, characterized in that: The rib plate has a mounting position in the middle, and the cooling fan is installed in the mounting position. The light source is fixed to one side of the first heat sink, and thermal grease is applied between the light source and the first heat sink.

3. The heat dissipation structure according to claim 2, characterized in that: The housing includes a bottom shell and a face mask, the face mask being snapped onto the bottom shell, and the first mounting cavity and the second mounting cavity being disposed between the bottom shell and the face mask.

4. The heat dissipation structure according to claim 3, characterized in that: Ventilation grilles are provided on the side walls and top walls of the bottom shell.

5. The heat dissipation structure according to any one of claims 1-4, characterized in that: A second heat sink is also provided in the first mounting cavity, and the second heat sink is located on one side of the control circuit board.

6. The heat dissipation structure according to any one of claims 1-3, characterized in that: The control circuit board is equipped with a display module, a control knob, and an energy storage power supply. The display module, the control knob, and the energy storage power supply are all electrically connected to the control circuit board.

7. The heat dissipation structure according to claim 6, characterized in that: The outer wall of the housing is provided with a power interface, which is electrically connected to the energy storage power source; connecting studs are provided on both sides of the power interface, the connecting studs are fixed to the housing, and the connecting studs are provided with threaded holes; a limit strip is provided between the connecting studs.

8. The heat dissipation structure according to any one of claims 1-3, characterized in that: The housing is provided with a mounting joint, which includes a mounting base and a connecting sleeve. The mounting base is fixed on the housing, and the connecting sleeve is hinged to the mounting base. The mounting base is provided with a first connection port, and a first adjusting screw is provided on one side of the first connection port. One end of the first adjusting screw passes through the first connection port and extends into the first connection port. The side wall of the connecting sleeve is provided with a second adjusting screw, one end of which extends through the side wall of the connecting sleeve and into the connecting sleeve.

9. A supplementary light, characterized in that: Includes the heat dissipation structure as described in any one of claims 1-8.

Images