LED flash stick light

Abstract

The utility model relates to a kind of LED flash stick lamp, belong to photographic equipment technical field, LED flash stick lamp includes handle, lamp shell, light-emitting module and heat sink, lamp shell two end opening inside hollow;Lamp shell is set in one end of handle, and extend along the direction away from handle.Light-emitting module is set in lamp shell, and with handle electric connection.Light-emitting module at least has flash mode and constant mode, handle can control light-emitting module switch between flash mode and constant mode.Heat sink is set in the end of lamp shell away from handle;The connecting end of lamp shell and handle is formed with air inlet, for external air to enter lamp shell inside.Heat sink is configured to generate airflow flowing along the axis direction of lamp shell in lamp shell, to discharge the heat inside lamp shell from the end of lamp shell away from handle, to effectively avoid hot air directly blowing to operator, improve use comfort, reduce the interference to shooting object and user.

Description

Technical Field

[0001] This utility model relates to the field of photographic and video equipment technology, and in particular to an LED flashlight. Background Technology

[0002] Traditional handheld flash wands typically use xenon lamps as their light source. Xenon lamps are relatively large and can only provide instantaneous flashes, failing to meet the needs of everyday shooting for continuous fill light, ambient light, special effects light, and other multi-mode applications. Furthermore, xenon lamps themselves generate a lot of heat, while the internal space of a flash wand is small, resulting in limited overall heat dissipation.

[0003] To improve heat dissipation, some lamps have adopted a structure with ventilation holes on the side of the lamp body and a fan for side exhaust, in order to create airflow.

[0004] However, due to the slender structure of the light stick, the lateral airflow path is short and dispersed, making it difficult to form a continuous and effective cooling airflow along the entire length of the light panel, resulting in insufficient heat dissipation efficiency. In addition, the lateral exhaust will blow hot air directly towards the operator or the subject, causing wind noise, blowing clothing or props during the shooting process, resulting in problems such as image shake and model discomfort, which greatly reduces the shooting experience. Utility Model Content

[0005] The purpose of this invention is to solve the technical problem of poor heat dissipation in existing flash lamps.

[0006] To address the aforementioned technical problems, this application provides an LED flashlight, comprising: a handle; a lamp housing with openings at both ends and a hollow interior; the lamp housing is disposed at one end of the handle and extends in a direction away from the handle; a light-emitting module disposed within the lamp housing and electrically connected to the handle; the light-emitting module has at least a flashing mode and a constant-on mode, and the handle can control the light-emitting module to switch between the flashing mode and the constant-on mode; a heat sink is disposed at the end of the lamp housing away from the handle; wherein, the connection end between the lamp housing and the handle forms an air inlet for external air to enter the interior of the lamp housing; the heat sink is configured to generate an airflow along the axial direction of the lamp housing within the lamp housing and to exhaust heat from the end of the lamp housing away from the handle.

[0007] In some embodiments of this application, the heat sink includes a fan bracket and a cooling fan. The fan bracket is disposed at the end of the lamp housing away from the handle, and the cooling fan is disposed on the fan bracket and drives air to flow along the axial direction of the lamp housing to exhaust the heat inside the lamp housing from the end opening of the lamp housing.

[0008] In some embodiments of this application, the heat sink includes an end cap disposed at the open end of the lamp housing away from the handle, and closes the open end of the lamp housing; the end cap is provided with an air outlet, and the air outlet connects the interior of the lamp housing with the external environment.

[0009] In some embodiments of this application, the end face of the lamp housing near the handle is provided with multiple notches, each notch extending along the axial direction of the lamp housing; the multiple notches are arranged at intervals along the circumference of the lamp housing; the end face of the handle facing the lamp housing is provided with a mounting cavity, the inner wall of the mounting cavity is provided with multiple rings of positioning ribs, the positioning ribs are arranged around the inner wall of the mounting cavity; each ring of positioning ribs is provided with an opening groove extending along the axial direction of the handle; the opening groove and the notch form the air inlet.

[0010] In some embodiments of this application, the light-emitting module includes a main control board, a boost converter, and a lamp board. The main control board is electrically connected to the lamp board and the boost converter, respectively. Under the control of the main control board, the boost converter provides instantaneous high-voltage energy to the lamp board for flash mode, so that the lamp board can enter flash mode operation.

[0011] In some embodiments of this application, the lamp panel includes a dual-color temperature lamp panel and an RGB lamp panel; the dual-color temperature lamp panel and the RGB lamp panel are disposed inside the lamp housing and extend along the extension direction of the lamp housing; the light-emitting surfaces of the dual-color temperature lamp panel and the RGB lamp panel are opposite to each other, so that the dual-color temperature lamp panel and the RGB lamp panel can emit different types of light in different directions toward the lamp housing.

[0012] In some embodiments of this application, the LED flashlight includes a support plate disposed inside the lamp housing and extending along the axial direction of the lamp housing; one end of the support plate is connected to the handle, and the other end of the support plate is connected to the heat sink; the dual-color temperature lamp board and the RGB lamp board are respectively disposed on both sides of the support plate; the main control board is disposed between the RGB lamp board and the support plate.

[0013] In some embodiments of this application, the LED flashlight further includes a heat-conducting sheet and an insulating strip; the heat-conducting sheet is respectively disposed on both sides of the main control board in the thickness direction, for separating the main control board from the bracket board and the RGB light board in the thickness direction; the insulating strip is disposed on both sides of the main control board in the width direction, for electrically isolating the main control board from the bracket board in the width direction.

[0014] In some embodiments of this application, the LED flashlight further includes a top sleeve, a bottom sleeve, and a baffle; the bottom sleeve is disposed at the end of the lamp housing near the handle, and the top sleeve is disposed at the end of the lamp housing away from the handle; the top sleeve and the bottom sleeve are provided with lugs, and the baffle is rotatably disposed between the lugs of the top sleeve and the bottom sleeve for blocking the light emitted from the lamp housing.

[0015] In some embodiments of this application, the handle is provided with a power supply and a control module; the control module is electrically connected to the power supply and the light-emitting module respectively, and is used to control the working state of the light-emitting module.

[0016] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows: This application provides an LED flash stick light. The light-emitting module of the LED flash stick light has a flash mode and a constant-on mode. An air inlet is set at the connection between the handle and the lamp housing, and a heat sink is set at the end of the lamp housing away from the handle, so that air flows along the axis of the lamp housing, thereby forming an efficient airflow channel inside the slender lamp housing. This airflow channel can quickly remove the heat generated by the light-emitting module in flash mode from the lamp housing, significantly reducing the operating temperature of the lamp board and internal electronic components, and improving the reliability and lifespan of the LED flash stick light in high-power flash mode. At the same time, the air inlet is located at the connection between the handle and the lamp housing, and the heat sink is located at the far end of the lamp housing, so that the airflow flows upward along the lamp housing from the handle direction, effectively preventing hot air from blowing directly on the operator, improving user comfort, and reducing interference with the subject and the user. Furthermore, this airflow heat dissipation structure does not increase the size of the lamp body, taking into account both the portability of the lamp body and the heat dissipation requirements of high-brightness flash. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of an LED flashlight.

[0018] Figure 2 for Figure 1 A three-dimensional cross-sectional view of the top of a medium-sized LED flashlight.

[0019] Figure 3 for Figure 1 A schematic diagram of the 3D structure of the baffle of an LED flashlight.

[0020] Figure 4 for Figure 1 An exploded view of the structure of a Chinese LED flashlight.

[0021] Figure 5 This is a schematic diagram of the connection structure between the LED flashlight housing and the handle.

[0022] Figure 6 for Figure 1 An exploded view of the heat sink of an LED flashlight.

[0023] Figure 7 for Figure 6 A schematic diagram of the exploded structure of the cooling fan in the heat sink component.

[0024] The annotations in the attached figures are explained as follows: 100. LED flashlight stick; 101. Air inlet; 102. Air outlet; 10. Handle; 11. Upper shell; 12. Lower shell; 121. Bracket mounting hole; 13. Power supply; 14. Control module; 141. Circuit board; 142. Display screen; 143. Control keys; 15. Mounting cavity; 151. Positioning rib; 152. Opening slot; 20. Lamp housing; 21. Notch; 30. Light-emitting module; 31. Main control board; 311. Heat-conducting sheet; 312. Isolation strip; 32. Boost converter; 33. Lamp 331. Dual-color temperature lamp board; 332. RGB lamp board; 40. Bracket plate; 41. First connecting part; 42. Second connecting part; 50. Heat sink; 51. Cooling fan; 511. Fan housing; 512. Fan control board; 513. Stator coil; 514. Rotor; 515. Impeller; 52. Fan bracket; 521. Connecting plate; 522. Guide groove; 53. End cover; 54. Washer; 60. Baffle; 61. Mounting shaft; 71. Top sleeve; 72. Bottom sleeve; 73. Lug. Detailed Implementation

[0025] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0026] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back, etc.) are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the mechanism or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] Please see Figures 1 to 7 This embodiment provides an LED flashlight 100, which includes a handle 10, a lamp housing 20, a light-emitting module 30, and a heat sink 50.

[0029] The lamp housing 20 is hollow inside with openings at both ends. The lamp housing 20 is located at one end of the handle 10 and extends away from the handle 10. A light-emitting module 30 is disposed inside the lamp housing 20 and electrically connected to the handle 10. An air inlet 101 is formed at the connection end between the lamp housing 20 and the handle 10 to allow external air to enter the lamp housing 20. The light-emitting module 30 has at least a flashing mode and a constant-on mode, and the handle 10 can control the light-emitting module 30 to switch between the flashing mode and the constant-on mode. A heat sink 50 is located at the end of the lamp housing 20 away from the handle 10. The heat sink 50 is configured to generate an airflow along the axis of the lamp housing 20 within the lamp housing 20 to dissipate heat from the end of the lamp housing 20 away from the handle 10.

[0030] Specifically, the lamp housing 20 has a hollow cylindrical structure with openings at both ends. One end of the lamp housing 20 is fixed to one end of the handle 10 and extends in a direction away from the handle 10. Figure 1 As shown, an annular air inlet 101 is formed between the connection area of ​​the lamp housing 20 and the handle 10, allowing external air to smoothly enter the interior of the lamp housing 20. The light-emitting module 30 is disposed inside the lamp housing 20 and electrically connected to the handle 10. The light-emitting module 30 has a constant-on fill light mode and a flash mode for instantaneous light emission, so that the entire LED flash stick light 100 can be used as a continuous light source and can be switched to flash mode when needed to provide instantaneous high-brightness fill light.

[0031] A heat sink 50 is installed at the end of the lamp housing 20 away from the handle 10. During operation, the heat sink 50 draws air from inside the lamp housing 20, creating an airflow channel along the axis of the lamp housing 20. When the light-emitting module 30 operates, especially during high-power instantaneous illumination in flash mode, it generates a large amount of heat. The airflow can then rapidly flow from the handle 10 end to the top of the lamp housing 20, allowing the heat to be stably dissipated from the lamp housing 20 and preventing rapid accumulation of internal temperature.

[0032] Because the air inlet 101 is located near the handle 10, and the heat sink 50 is positioned away from the user, the exhaust of high-temperature gas is directed towards the far end of the light body, reducing the impact on the operator and the subject, thereby effectively improving the user experience. Furthermore, the vertical heat dissipation method that runs through the light housing 20 does not significantly increase the volume of the light housing 20 or the external heat sink, allowing the LED flash stick light 100 to remain lightweight and portable while still meeting the high-brightness, high-stability flash requirements of professional photography.

[0033] Please see Figure 4 and Figure 5 In some embodiments, the handle 10 is provided with a power supply 13 and a control module 14; the control module 14 is electrically connected to the power supply 13 and the light-emitting module 30 respectively, and is used to control the working state of the light-emitting module 30.

[0034] Specifically, the handle 10 may include an upper shell 11 and a lower shell 12, which cooperate to form an internal cavity of the handle 10. A power supply 13 and a control module 14 are arranged within the cavity. The power supply 13 may be a rechargeable lithium battery pack, which is fixed in the lower region of the handle 10. The control module 14 is located at one end of the handle 10 near the lamp housing 20, and may include a circuit board 141, a display screen 142, and control buttons 143.

[0035] The circuit board 141 can be fixed inside the handle 10 and connected to the power supply 13 and the light-emitting module 30 via a ribbon cable to realize power output management and mode switching control. The display screen 142 is fixed on the circuit board 141 and corresponds to the window position of the upper shell 11, so as to display parameters such as the current color temperature value, brightness, flash mode, remaining power and heat dissipation status in real time, so that users can intuitively understand the working status of the device. The control keys 143 are located near the display screen 142, and through physical buttons, toggle keys or knobs, users can directly perform operations such as switching on and off, adjusting brightness and selecting flash mode.

[0036] Please see Figure 4 and Figure 6 In some embodiments, the heat sink 50 includes a fan bracket 52 and a cooling fan 51. The fan bracket 52 is disposed at the end of the lamp housing 20 away from the handle 10, and the cooling fan 51 is disposed on the fan bracket 52 and drives air to flow along the axial direction of the lamp housing 20 to exhaust the heat inside the lamp housing 20 from the end opening of the lamp housing 20.

[0037] Specifically, the fan bracket 52 can be fixedly installed at the opening on the top of the lamp housing 20. Its material can be metal or high-strength engineering plastic, and it is used to reliably support the cooling fan 51. The cooling fan 51 is installed on the fan bracket 52 with screws. The cooling fan 51 is an axial fan with a circular outer frame. The axial fan has a compact overall structure, large air volume, and high static pressure, enabling it to generate a relatively stable and directional axial airflow inside the slender lamp housing 20.

[0038] like Figure 7As shown, the cooling fan 51 may include an annular fan housing 511, a fan control board 512 mounted inside the fan housing 511, a stator coil 513 fixed inside the fan housing 511, a rotor 514 magnetically coupled to the stator coil 513, and an impeller 515 mounted on the rotor 514. The annular fan housing 511 has ventilation holes. The fan control board 512 is fixed inside the fan housing 511 and serves as the drive electronic circuit and signal interface. The stator coil 513 is fixedly mounted on the fan housing 511 and electrically connected to the fan control board 512. The stator coil 513 generates a changing electromagnetic field under the drive of the fan control board 512. The rotor 514 is coaxially arranged outside the stator coil 513 and fixed to the impeller 515, causing the impeller 515 to rotate at high speed with the rotor 514 to generate a stable axial airflow.

[0039] When the impeller 515 rotates, air is drawn in through the air inlet 101 formed at the connection between the lamp housing 20 and the handle 10, flows upward along the axis of the lamp housing 20 through the airflow channel inside the lamp housing 20, and is finally discharged from the heat sink 50 located at the top of the lamp housing 20. Because the airflow direction of the axial fan is consistent with the longitudinal structure of the lamp housing 20, it can form a through-flow air duct inside the lamp housing 20, allowing the heat generated by the light-emitting module 30 and the boost circuit to be quickly carried away inside the lamp housing 20. Compared with the traditional side-exhaust structure, the heat dissipation method in this embodiment significantly reduces the resistance when the airflow changes direction, improving airflow utilization efficiency. At the same time, hot air is discharged from the end away from the operator, avoiding direct hot air blowing on the user and effectively improving the handheld experience.

[0040] Please see Figure 6 In some embodiments, the heat sink 50 further includes an end cap 53. The end cap 53 is disposed at the open end of the lamp housing 20 away from the handle 10 and closes the open end of the lamp housing 20; the end cap 53 is provided with an air outlet 102, which connects the interior of the lamp housing 20 with the external environment.

[0041] Specifically, the end cap 53 is installed at the end of the lamp housing 20 away from the handle 10 to seal the opening of the lamp housing 20, thereby increasing the aesthetics of the device. Multiple air outlets 102 arranged in a strip or grid pattern can be machined on the end cap 53 to ensure sufficient airflow area without reducing the mechanical strength of the end cap 53 or affecting the appearance integrity of the lamp body. The cooling fan 51 and fan bracket 52 are both housed within the end cap 53 and separated by a gasket 54. When the cooling fan 51 operates, air is forced to flow axially inside the lamp housing 20, allowing the heat accumulated inside the lamp housing 20 to be quickly exhausted to the external environment through the air outlets 102 of the end cap 53.

[0042] Please see Figure 4 and Figure 5In some embodiments, the end face of the lamp housing 20 near the handle 10 is provided with a plurality of notches 21, each notch 21 extending along the axial direction of the lamp housing 20; the plurality of notches 21 are arranged at intervals along the circumference of the lamp housing 20. The end face of the handle 10 facing the lamp housing 20 is provided with a mounting cavity 15, and the inner wall of the mounting cavity 15 is provided with a plurality of positioning ribs 151, which are arranged around the inner wall of the mounting cavity 15; each positioning rib 151 is provided with an opening groove 152 extending along the axial direction of the handle 10; the opening groove 152 and the notch 21 form an air inlet 101.

[0043] Specifically, multiple notches 21 extending along the axis of the lamp housing 20 are evenly provided on the end face of the lamp housing 20 near the handle 10. The notches 21 are slot-shaped openings. The multiple notches 21 are distributed at intervals along the circumference of the lamp housing 20 to form a ring arrangement structure, so that the air entering the lamp housing 20 can be drawn in evenly from all directions, avoiding the airflow deviation caused by unilateral air intake.

[0044] Correspondingly, at the position corresponding to the lamp housing 20, the end face of the handle 10 facing the lamp housing 20 is provided with a mounting cavity 15, which is used to accommodate the lamp housing 20. Multiple rings of positioning ribs 151 are arranged around the inner wall of the mounting cavity 15. Each ring of positioning ribs 151 has an annular convex rib structure, so that after the lamp housing 20 is inserted into the mounting cavity 15, it can abut against the positioning ribs 151 to achieve a secure positioning effect. The positioning ribs 151 have openings 152 extending along the axis of the handle 10. The position of each opening rib 152 corresponds to the notch 21 on the end face of the lamp housing 20. After the lamp housing 20 is assembled onto the handle 10, the notch 21 of the lamp housing 20 communicates with the opening ribs 152 in the handle 10, thereby forming multiple air inlets 101, allowing airflow to enter the lamp housing 20 sequentially through the opening ribs 152 and the notch 21.

[0045] Because the notches 21 and opening slots 152 are in multiple corresponding pairs and arranged in a ring, air can be drawn in evenly from multiple directions around the lamp housing 20, thereby significantly improving air intake efficiency. Compared with traditional single-sided or partial air intake structures, this ring-shaped air intake system can not only avoid local overheating, but also significantly improve the stability of the axial airflow formed by the fan, making the internal airflow path more uniform and enhancing the overall working effect of the cooling fan 51.

[0046] Please see Figure 4 In some embodiments, the light-emitting module 30 includes a main control board 31, a boost converter 32, and a lamp board 33. The main control board 31 is electrically connected to the lamp board 33 and the boost converter 32 respectively; under the control of the main control board 31, the boost converter 32 provides instantaneous high-voltage energy to the lamp board 33 for flash mode, so that the lamp board 33 can enter the flash mode to work.

[0047] Specifically, the main control board 31 of the light-emitting module 30 is electrically connected to the lamp board 33 and the boost converter 32 via ribbon cables, forming a complete control and drive circuit. The main control board 31 can output corresponding control signals according to the current operating mode. When the user triggers the flash mode, the main control board 31 sends a drive command to the boost converter 32, causing the boost converter 32 to initiate a high-voltage conversion process, rapidly boosting the low-voltage electrical energy from the power supply 13 to the instantaneous high voltage required for flashing, and outputting this high-voltage energy to the lamp board 33 in a very short time.

[0048] In some embodiments, the boost converter 32 may employ a high-frequency boost circuit or a pulsed energy storage and discharge structure, with an internal energy storage capacitor. Upon receiving a control command from the main control board 31, the boost converter 32 rapidly charges the energy storage capacitor and releases the energy to the light board 33 in a pulsed manner at a specified time, causing the light board 33 to receive high-voltage excitation instantly and emit a strong flash. This allows the LED flash stick light 100 to quickly switch between constant-on mode and flash mode, making the LED flash stick light 100 more reliable and stable in professional photography or high-speed fill light scenarios.

[0049] Please see Figure 4 In some embodiments, the lamp panel 33 includes a dual-color temperature lamp panel 331 and an RGB lamp panel 332. The dual-color temperature lamp panel 331 and the RGB lamp panel 332 are disposed within the lamp housing 20 and extend along the extending direction of the lamp housing 20. The light-emitting surfaces of the dual-color temperature lamp panel 331 and the RGB lamp panel 332 are opposite to each other, so that the dual-color temperature lamp panel 331 and the RGB lamp panel 332 can emit different types of light in different directions toward the lamp housing 20.

[0050] Specifically, the light panel 33 includes a dual-color temperature light panel 331 and an RGB light panel 332 disposed inside the light housing 20. These two panels are arranged side-by-side along the extension direction of the light housing 20, forming a double-sided light-emitting structure within the limited space of the light housing 20. The dual-color temperature light panel 331 is equipped with warm white and cool white LED beads, capable of outputting white light of different color temperatures under the adjustment of the main control board 31. This is suitable for everyday fill light, directional lighting, and fine-tuning of skin tone and ambient color temperature in photography. The RGB light panel 332 uses a red, green, and blue LED array, and through light mixing control, it can achieve full-color output, presenting a variety of color effects for creating ambient light, colorful scene light, or special effects flash.

[0051] To avoid mutual interference between the light from the two sets of light panels 33, the light-emitting surfaces of the dual-color temperature light panel 331 and the RGB light panel 332 are designed to face away from each other, that is, to emit light in two opposite directions towards the lamp housing 20, thus creating a natural separation between the dual-color temperature light and the RGB light in space. This gives the LED flashlight 100 bidirectional light emission capability, greatly improving the flexibility of the device.

[0052] It should be understood that in this example, the light produced by the LED flash stick light 100 in flash mode is emitted by the dual-color temperature light panel 331, that is, the booster 32 mainly provides instantaneous high voltage to the dual-color temperature light panel 331.

[0053] Please see Figure 4 In some embodiments, the LED flashlight 100 includes a support plate 40. The support plate 40 is disposed inside the lamp housing 20 and extends along the axial direction of the lamp housing 20. One end of the support plate 40 is connected to the handle 10, and the other end of the support plate 40 is connected to the heat sink 50; a dual-color temperature lamp panel 331 and an RGB lamp panel 332 are respectively disposed on both sides of the support plate 40; a main control board 31 is disposed between the RGB lamp panel 332 and the support plate 40.

[0054] Specifically, the LED flashlight 100 has an integrally molded bracket plate 40 inside. The bracket plate 40 is the core load-bearing structure that runs through the inside of the lamp housing 20 and can provide structural support for the components inside the lamp housing 20.

[0055] like Figure 4 As shown, the bracket plate 40 has a first connecting part 41 and a second connecting part 42 at both ends. The first connecting part 41 is located at the end near the handle 10. It has a flat plug-in structure and can be directly inserted into the handle 10. It is fixed with the bracket mounting hole 121 on the lower shell 12 of the handle 10 by screws, thereby realizing a firm connection between the bracket plate 40 and the handle 10. The other end of the bracket plate 40 is provided with a second connecting part 42, which forms the mounting position for the fan bracket 52. The fan bracket 52 is provided with a guide groove 522 and a connecting plate 521 corresponding to the second connecting part 42. The guide groove 522 guides and positions the second connecting part 42 during assembly, ensuring that the bracket plate 40 and the fan bracket 52 can be quickly and accurately connected. The connecting plate 521 is locked to the second connecting part 42 by screws, so that the heat sink 50 is firmly installed at the end of the lamp housing 20 away from the handle 10, providing a reliable mounting base for the operation of the cooling fan 51.

[0056] Please continue reading. Figure 4 The dual-color temperature light panel 331 and the RGB light panel 332 are respectively mounted on both sides of the bracket plate 40, and the main control board 31 is located between the RGB light panel 332 and the bracket plate 40. This not only improves the utilization rate of the internal space of the lamp, but also keeps the two sets of light panels 33 independent in the optical path, which is conducive to the separate output of dual-color temperature light and RGB light, and enhances the overall structural strength of the lamp body. This allows the lamp body to maintain good mechanical reliability even under long-term operation or mobile use.

[0057] Please see Figure 4In some embodiments, the LED flashlight 100 further includes a heat-conducting sheet 311 and an insulating strip 312. The heat-conducting sheet 311 is respectively disposed on both sides of the main control board 31 in the thickness direction, and is used to separate the main control board 31 from the bracket plate 40 and the RGB light board 332 in the thickness direction. The insulating strip 312 is disposed on both sides of the main control board 31 in the width direction, and is used to electrically isolate the main control board 31 from the bracket plate 40 in the width direction.

[0058] Specifically, when the main control board 31 inside the LED flashlight 100 is installed between the RGB light board 332 and the bracket plate 40, a heat-conducting sheet 311 and an insulating strip 312 are provided as auxiliary structures to ensure circuit safety and heat dissipation efficiency. The heat-conducting sheet 311 is arranged on both sides of the main control board 31 in the thickness direction. During installation, it is attached to the side of the main control board 31, so that the main control board 31 maintains an appropriate distance from the RGB light board 332 and the bracket plate 40 in the thickness direction. On the one hand, this avoids the risk of short circuit caused by direct contact between the main control board 31 and the solder joints of the metal bracket plate 40 or the light board 332. On the other hand, the heat-conducting sheet 311 can also quickly conduct the heat generated by the main control board 31 during operation to the metal groove of the bracket plate 40, thereby achieving more efficient heat conduction and diffusion through the heat dissipation path formed by the bracket plate 40. This keeps the main control board 31 at a stable temperature under high load conditions, which is beneficial to extending the service life of electronic components.

[0059] Isolation strips 312 are provided on both sides of the main control board 31 in the width direction. The isolation strips 312 are made of high-temperature resistant insulating material and are attached between the main control board 31 and the support plate 40, serving a dual purpose of electrical isolation and buffering. The isolation strips 312 not only prevent the exposed solder joints of the main control board 31 from contacting the metal structure of the support plate 40, thereby effectively preventing electrical safety hazards such as short circuits and leakage, but also have a certain degree of elasticity, which can absorb impact when the equipment is subjected to vibration, drops, or long-term movement, reducing the rigid compression between the main control board 31 and other structures, and improving the overall seismic reliability.

[0060] Please see Figure 6 In some embodiments, the LED flashlight 100 further includes a top sleeve 71, a bottom sleeve 72, and a baffle 60. The bottom sleeve 72 is disposed at the end of the lamp housing 20 near the handle 10, and the top sleeve 71 is disposed at the end of the lamp housing 20 away from the handle 10. Both the top sleeve 71 and the bottom sleeve 72 are provided with lugs 73, and the baffle 60 is rotatably disposed between the lugs 73 of the top sleeve 71 and the bottom sleeve 72 for blocking the light emitted from the lamp housing 20.

[0061] Specifically, the bottom sleeve 72 is installed at the end of the lamp housing 20 near the handle 10 and fits onto the outer wall of the lamp housing 20. This serves to enhance the structural stability of the end of the lamp housing 20 and also provides a lower fulcrum for the baffle 60. The top sleeve 71 is located at the end of the lamp housing 20 away from the handle 10, and it can fit onto the outer wall of the end cap 53. Both the top sleeve 71 and the bottom sleeve 72 have two lugs 73, each with a mounting hole. The two pairs of lugs 73 form two axial mounting positions, corresponding to the two light emission directions of the lamp housing 20. The baffle 60 has a thin sheet structure, and both ends of the baffle 60 have mounting shafts 61. The mounting shafts 61 can rotatably connect to the mounting holes of the lugs 73, allowing them to rotate around their axis.

[0062] During use, the baffle 60 can be rotated to different angles by the user according to actual shooting needs. When the baffle 60 rotates towards the light-emitting direction of the lamp housing 20, it can partially block the light emitted from the lamp housing 20, thereby achieving effects such as controlling the direction of light, preventing light spill, and limiting the fill light range. This gives the LED flash stick light 100 higher light controllability, making it particularly suitable for studio shooting, side lighting setups, or creative shooting scenarios that require strict control of light boundaries.

[0063] This application provides an LED flash stick light 100. The light-emitting module 30 of the LED flash stick light 100 has a flash mode and a constant-on mode. An air inlet 101 is provided at the connection between the handle 10 and the lamp housing 20 of the LED flash stick light 100, and a heat sink 50 is provided at the end of the lamp housing 20 away from the handle 10, so that air flows along the axial direction of the lamp housing 20, thereby forming an efficient airflow channel inside the slender lamp housing 20. This airflow channel can quickly remove the heat generated by the light-emitting module 30 in flash mode from the lamp housing 20, significantly reducing the operating temperature of the lamp board 33 and internal electronic components, and improving the reliability and service life of the LED flash stick light 100 in high-power flash mode. At the same time, the air inlet 101 is located at the connection end between the handle 10 and the lamp housing 20, and the heat sink 50 is located at the far end of the lamp housing 20, so that the airflow flows upward along the lamp housing 20 from the direction of the handle 10, effectively preventing hot air from blowing directly on the operator, improving user comfort, and reducing interference with the subject and the user. Furthermore, this airflow cooling structure does not require increasing the size of the lamp body, thus balancing the lamp body's portability with the heat dissipation requirements of high-brightness flashing.

[0064] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. An LED flashlight, characterized in that, include: handle; The lamp housing has openings at both ends and is hollow inside; the lamp housing is disposed at one end of the handle and extends in a direction away from the handle; A light-emitting module is disposed inside the lamp housing and electrically connected to the handle; the light-emitting module has at least a flashing mode and a constant-on mode, and the handle can control the light-emitting module to switch between the flashing mode and the constant-on mode. A heat sink is disposed at the end of the lamp housing away from the handle; The lamp housing has an air inlet at the connection end with the handle, allowing external air to enter the lamp housing. The heat sink is configured to generate an airflow along the axis of the lamp housing and exhaust heat from the end of the lamp housing away from the handle.

2. The LED flashlight according to claim 1, characterized in that, The heat sink includes a fan bracket and a cooling fan. The fan bracket is located at the end of the lamp housing away from the handle. The cooling fan is mounted on the fan bracket and drives air to flow along the axial direction of the lamp housing to exhaust the heat inside the lamp housing from the end opening of the lamp housing.

3. The LED flashlight according to claim 2, characterized in that, The heat sink includes an end cap, which is disposed at the open end of the lamp housing away from the handle and closes the open end of the lamp housing; the end cap is provided with an air outlet, which connects the inside of the lamp housing with the external environment.

4. The LED flashlight according to claim 1, characterized in that, The lamp housing has multiple notches on its end face near the handle, each notch extending along the axial direction of the lamp housing; the multiple notches are arranged at intervals along the circumference of the lamp housing; the end face of the handle facing the lamp housing has a mounting cavity, the inner wall of the mounting cavity has multiple rings of positioning ribs, the positioning ribs are arranged around the inner wall of the mounting cavity; each ring of positioning ribs has an opening groove extending along the axial direction of the handle; the opening groove and the notch form the air inlet.

5. The LED flashlight according to claim 1, characterized in that, The light-emitting module includes a main control board, a boost converter, and a lamp board. The main control board is electrically connected to the lamp board and the boost converter. Under the control of the main control board, the boost converter provides instantaneous high-voltage energy to the lamp board for flash mode, so that the lamp board can enter flash mode.

6. The LED flashlight according to claim 5, characterized in that, The lamp panel includes a dual-color temperature lamp panel and an RGB lamp panel; the dual-color temperature lamp panel and the RGB lamp panel are disposed inside the lamp housing and extend along the extension direction of the lamp housing; the light-emitting surfaces of the dual-color temperature lamp panel and the RGB lamp panel are opposite to each other, so that the dual-color temperature lamp panel and the RGB lamp panel can emit different types of light in different directions toward the lamp housing.

7. The LED flashlight according to claim 6, characterized in that, The LED flashlight includes a support plate, which is disposed inside the lamp housing and extends along the axial direction of the lamp housing; one end of the support plate is connected to the handle, and the other end of the support plate is connected to the heat sink; the dual-color temperature lamp board and the RGB lamp board are respectively disposed on both sides of the support plate; the main control board is disposed between the RGB lamp board and the support plate.

8. The LED flashlight according to claim 7, characterized in that, The LED flashlight also includes a heat-conducting sheet and an insulating strip; the heat-conducting sheet is respectively disposed on both sides of the main control board in the thickness direction, and is used to separate the main control board from the bracket board and the RGB light board in the thickness direction; the insulating strip is disposed on both sides of the main control board in the width direction, and is used to electrically isolate the main control board from the bracket board in the width direction.

9. The LED flashlight according to claim 1, characterized in that, The LED flashlight also includes a top sleeve, a bottom sleeve, and a baffle; the bottom sleeve is disposed at the end of the lamp housing near the handle, and the top sleeve is disposed at the end of the lamp housing away from the handle; the top sleeve and the bottom sleeve are provided with lugs, and the baffle is rotatably disposed between the lugs of the top sleeve and the bottom sleeve for blocking the light emitted from the lamp housing.

10. The LED flashlight according to claim 1, characterized in that, The handle contains a power supply and a control module; the control module is electrically connected to the power supply and the light-emitting module respectively, and is used to control the working state of the light-emitting module.

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