Dual light source flashlight

Abstract

An embodiment of this utility model provides a dual-light source flashlight, comprising: a housing, the housing including a first light cavity and a second light cavity arranged adjacent to each other, and the housing including a first light-emitting surface and a second light-emitting surface located on different sides; a first light source, disposed in the first light cavity, and disposed opposite to the first light-emitting surface so that the light emitted by the first light source is emitted outward through the first light-emitting surface; a second light source, disposed in the second light cavity, and the light emitted by the second light source is emitted outward through the second light-emitting surface; a first lampshade, disposed in the second light cavity, and disposed between the first light source and the second light source; wherein, a portion of the light emitted by the second light source is emitted through the first lampshade and directed towards the second light-emitting surface. In this utility model's technical solution, the same flashlight simultaneously possesses forward illumination and side illumination functions.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and more specifically, to a dual-light source flashlight. Background Technology

[0002] Currently, flashlight products typically use LED beads to achieve illumination. However, due to the limitations of the LED bead structure, the light diverges at a small angle in all directions. In related technologies, flashlights are mostly unidirectional, which can only be used for parallel illumination. The light is strong and dazzling, and the function of flashlights is relatively simple, limiting their use scenarios. Utility Model Content

[0003] The present invention aims to at least solve the technical problem of the limited functionality of flashlights in existing or related technologies.

[0004] In view of this, an embodiment of the present invention provides a dual-light source flashlight.

[0005] To achieve the above objectives, embodiments of this utility model provide a dual-light source flashlight, comprising: a housing, the housing including a first light cavity and a second light cavity arranged adjacent to each other, and the housing including a first light-emitting surface and a second light-emitting surface located on different sides; a first light source, disposed in the first light cavity, and disposed opposite to the first light-emitting surface so that the light emitted by the first light source is emitted outward through the first light-emitting surface; a second light source, disposed in the second light cavity, and the light emitted by the second light source is emitted outward through the second light-emitting surface; a first lampshade, disposed in the second light cavity, and disposed between the first light source and the second light source; wherein, a portion of the light emitted by the second light source is emitted through the first lampshade and directed towards the second light-emitting surface.

[0006] The dual-light source flashlight proposed in this utility model includes a housing, a first light source, and a second light source. By having a first light cavity and a second light cavity arranged adjacent to each other on the housing, and a first light-emitting surface and a second light-emitting surface respectively provided on different sides of the housing, the same flashlight can simultaneously have the functions of forward functional lighting and side surround lighting or side ambient lighting.

[0007] By using the first and second light cavities arranged adjacent to each other within the housing, and the first and second light-emitting surfaces located on different sides, the first and second light sources form independent and complementary light paths. The first light source is positioned opposite to the first light-emitting surface to provide efficient forward illumination; the second light source emits light outward through the second light-emitting surface to provide soft side / circumferential illumination and ambient effects.

[0008] It should be emphasized that, since a first lampshade is set in the second light cavity, the light from the second light source needs to pass through the first lampshade before being emitted outward through the second light-emitting surface, so as to achieve effective guidance and optimized distribution of the light.

[0009] In some technical solutions, the housing may optionally include a power supply cavity, which is located on the side of the second optical cavity away from the first optical cavity, and a battery is disposed inside the power supply cavity.

[0010] In this design, a compact structure, independent optical paths, and efficient thermal management are achieved by arranging a light source cavity and a power supply cavity adjacent to each other inside the housing. The light source cavity is further subdivided into a first optical cavity and a second optical cavity, which respectively house the first and second light sources. The housing, serving as the mechanical load-bearing and protective structure, not only ensures the safety and stability of the battery and light source but also optimizes the output effects of forward and side light through a well-designed cavity structure. The power supply cavity houses the battery, ensuring a reliable power supply for the system.

[0011] The power supply cavity is located at the far end of the second optical cavity, that is, on the side away from the first optical cavity. The first optical cavity, the second optical cavity, and the power supply cavity are arranged in sequence. The power supply cavity is located on the side of the second optical cavity away from the first optical cavity, so as to achieve physical isolation between the battery and the first optical cavity, avoid heat and electromagnetic interference from affecting the first light source, and ensure the stable emission of the light source.

[0012] In some technical solutions, the dual-light source flashlight may optionally include: a first heat sink, disposed in the first light cavity, and a first light source disposed in the first heat sink; a fixed cover, detachably connected to the first heat sink, the end face of the fixed cover including a first light-emitting surface, and the fixed cover and the first heat sink together forming the first light cavity; wherein, the second end of the first lamp cover abuts against the first heat sink or is detachably connected to or integrally formed with it.

[0013] In this technical solution, the first heat sink serves as the mechanical fixation and heat dissipation function of the first light source, ensuring a stable working environment for the light source. The fixing cover is detachably connected to the first heat sink, and its end face is the first light-emitting surface, forming the front light-transmitting window of the first light cavity. It has the functions of optical light transmission, protection, and structural enclosure. The first light cavity formed by the two together provides a stable and sealed optical and thermal management environment for the first light source, realizing efficient forward lighting output and improving product reliability and maintenance convenience.

[0014] The first heat sink is connected to or abuts against the first lamp cover to fix its position. The specific fixing position is located at the second end of the first lamp cover. The two can be matched by abutting, detachable connection, or integral molding.

[0015] In some technical solutions, the dual-light source flashlight may optionally include: a second heat sink, disposed in the second light cavity, wherein the first end of the first lampshade abuts against the second heat sink or is detachably connected to or integrally formed with the second heat sink; a light source plate, disposed on the side of the second heat sink facing the first light cavity, and multiple second light sources are evenly arranged circumferentially on the same side of the light source plate; wherein, the side of the first heat sink facing the second heat sink is provided with a reflective surface, the second light source is disposed on the side of the light source plate facing the first light cavity, and part of the light from the second light source is directed to the second light-emitting surface through the reflective surface.

[0016] In this design, a second heat sink is located within the second optical cavity, serving as both a mechanical support and a heat dissipation base. This ensures stable and efficient heat dissipation for the light source board and multiple second light sources. The light source board, positioned on the second heat sink facing the first optical cavity, acts as a carrier for the multiple second light sources, enabling electrical connection and mechanical positioning. Multiple second light sources are evenly arranged circumferentially on the same side of the light source board, forming a ring-shaped light source array that emits light towards one side of the first optical cavity. This, combined with the optical structure of the second optical cavity, achieves lateral or surround illumination effects.

[0017] Through the synergistic effect of the second heat sink, the light source board, and the reflective surface of the first heat sink, efficient heat dissipation, uniform distribution, and effective light path guidance of the second light source are achieved. It should be emphasized that the reflective surface design improves light efficiency and light uniformity, reduces glare, and enhances the quality of side lighting. The overall structure is reasonable, easy to maintain, and meets the multi-directional and multi-mode lighting needs of dual-light source flashlights.

[0018] The second heat sink is connected to or abuts against the first lampshade to fix its position. Specifically, the fixing position is located at the first end of the first lampshade. The fit can be achieved by abutting, detachable connection, or integral molding. In some technical solutions, the dual-light source flashlight may optionally include: a second lampshade, fitted over the first lampshade, the side of the second lampshade including a second light-emitting surface; wherein the second lampshade, the first heat sink and the second heat sink together form a second light cavity, and the light from the second light source is emitted outward through the first lampshade and the second lampshade.

[0019] In this technical solution, the first lampshade, detachably connected to the second heat sink, forms the inner structure of the optical space of the second light source, providing initial optical guidance and mechanical protection. The second lampshade is fitted over the first lampshade, with its side serving as the second light-emitting surface, undertaking the functions of light diffusion, filtering, and decorative ambient lighting. The light emitted by the second light source passes sequentially through the first and second lampshades, forming a soft, uniform, and decorative side light output, significantly enhancing the flashlight's versatility and user experience.

[0020] The second light source utilizes a double-layered structure of the second and first lamp covers, combined with the first and second heat sinks, to construct a closed and efficient second light cavity. The light from the second light source is modulated by the double-layered lamp covers and emitted from the second light-emitting surface, achieving high-quality side light output.

[0021] In some technical solutions, the housing may optionally include: a handle cover, the handle cover having a power supply cavity; wherein the handle cover includes a connecting end face, and the second lamp cover abuts against the connecting end face.

[0022] In this design, the handle cover incorporates a power supply cavity to securely secure the battery and implement a modular design for the power supply system. This improves product maintenance convenience and ease of battery replacement for users. The power supply cavity is electrically connected to the light source cavity, ensuring a stable power supply to both the first and second light sources. The connecting end face provides robust mechanical support and precise positioning for the second lamp cover, maintaining the overall stability of the double-layer lamp cover structure. The contact surface, combined with a sealing design, enhances the product's dustproof and waterproof rating, ensuring the safety of internal optical components and circuitry.

[0023] In some technical solutions, the dual-light source flashlight may optionally include: a light guide column disposed inside the first lamp cover, with one end of the light guide column detachably connected to the second heat sink and the other end of the light guide column detachably connected to the first heat sink; wherein the outer surface of the light guide column includes a mirror layer.

[0024] In this technical solution, a light guide post is located inside the first lampshade, connecting the second heat sink and the first heat sink to form a mechanical and thermal management structure that runs through both heat sinks. The outer surface of the light guide post has a mirror layer with high reflectivity, effectively reflecting and guiding light to achieve lateral light guidance and optical path isolation of the second light source. The light guide post is not only an optical light guiding element but also a heat conduction bridge and mechanical connector, ensuring the dual-light source flashlight has a stable structure, efficient thermal management, and excellent optical performance.

[0025] In some technical solutions, optionally, the other end of the light guide post is threadedly connected to the first heat sink, and when the light guide post is connected to the first heat sink, the first heat sink abuts against the second lamp cover.

[0026] In this design, the other end of the light guide post is connected to the first heat sink via a thread, achieving mechanical fastening and heat conduction, ensuring structural stability and efficient heat dissipation. With the light guide post connected to the first heat sink, the first heat sink abuts against the second lampshade, forming a rigid reference surface and a sealed interface, improving overall mechanical strength and protective performance. This ensures a stable connection and precise positioning between the light guide post, the first heat sink, and the second lampshade, guaranteeing the optical performance, thermal management, and structural durability of the dual-light source flashlight.

[0027] In some technical solutions, optionally, the first lampshade is horn-shaped, and the size of the first end of the first lampshade is larger than the size of the second end of the first lampshade.

[0028] In this design, the first lampshade is horn-shaped, with the first end being larger than the second end, forming a tapered optical and mechanical structure. The first end of the first lampshade abuts against the second heat sink, achieving a stable mechanical connection, good sealing, and excellent heat conduction. The horn-shaped design, combined with the inner wall light guide groove design, effectively guides the light from the second light source, improving the uniformity of side light and visual comfort.

[0029] In some technical solutions, optionally, the inner wall and / or outer wall of the first lampshade are provided with multiple light guide grooves, which extend along the direction from the second light cavity to the first light cavity.

[0030] In this technical solution, multiple light guide grooves are provided on the wall surface of the first lampshade. These grooves can be located on the inner or outer wall of the first lampshade, or simultaneously on both. The light guide grooves extend along the direction from the second light cavity to the first light cavity, forming a highly efficient light guiding structure. Through refraction and reflection, the light guide grooves uniformly disperse the light emitted by the second light source, improving the uniformity and brightness of the side light, reducing glare, and enhancing visual comfort. The light guide grooves are integrally molded with the first lampshade, ensuring structural stability and manufacturing precision. The synergistic effect of the light guide grooves and the second lampshade results in delicate light textures and a pleasing decorative atmosphere in the side light output, enhancing the product's versatility and user experience.

[0031] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0032] Figure 1 A schematic diagram of a dual-light source flashlight according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of a dual-light source flashlight according to an embodiment of the present invention is shown; Figure 3 An exploded view of a dual-light source flashlight according to an embodiment of the present invention is shown. Figure 4 A schematic diagram of the structure of a first lampshade according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of a dual-light source flashlight according to an embodiment of the present invention is shown.

[0033] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1: Dual-light source flashlight; 11: Housing; 111: First light cavity; 1111: First light-emitting surface; 112: Second light cavity; 1121: Second light-emitting surface; 121: First light source; 122: Second light source; 131: Light source cavity; 132: Power supply cavity; 1321: Battery; 14: First heat sink; 141: Reflective surface; 15: Fixing cover; 16: Second heat sink; 17: Light source board; 181: First lampshade; 1811: Light guide groove; 182: Second lampshade; 19: Light guide column; 191: Mirror layer; 20: Handle cover; 201: Connecting end face. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of the embodiments of this utility model, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, embodiments of the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0036] In related technologies, flashlight products are mostly unidirectional, which can only be used for parallel illumination. The light is strong and dazzling, and the functions of flashlight products are relatively simple, limiting their use scenarios.

[0037] The following reference Figures 1 to 5 Some embodiments according to the present invention are described.

[0038] like Figure 1 As shown, this embodiment provides a dual-light source flashlight 1, including a housing 11, a first light source 121, and a second light source 122. The flashlight is emitted through a first light cavity 111 and a second light cavity 112 adjacently arranged on the housing 11, and a first light-emitting surface 1111 and a second light-emitting surface 1121 are respectively provided on different sides of the housing 11. Specifically, the light is emitted as follows... Figure 5 As shown by the middle arrow, this allows the same flashlight to simultaneously provide forward illumination and side surround or side ambient lighting.

[0039] The first light source 121 forms long-range or working illumination through the first light-emitting surface 1111; the second light source 122 forms soft lateral diffused light or decorative light patterns through the second light-emitting surface 1121, which significantly reduces glare and expands the application scenarios, such as walking, camping, reading, nighttime atmosphere, signal prompts and other scenarios.

[0040] The first optical cavity 111 and the second optical cavity 112 are adjacent but each establishes an independent optical path for its corresponding light-emitting surface, achieving parallel output of high brightness in the front and soft light in the side, avoiding light crosstalk and sensory conflict. At the same time, the two adjacent optical cavities share the mechanical and thermal management conditions of the housing 11, improving overall strength and heat dissipation efficiency. The two light-emitting surfaces located on different sides disperse the temperature rise of the heat source surface, improving grip comfort and reliability.

[0041] Specifically, the first light source 121 and the first light-emitting surface 1111 are positioned opposite each other to ensure efficient and directional forward light path. The second light source 122 emits light through the second light-emitting surface 1121, and the lateral light is diffused by the cavity and filtered by the microstructure of the light-emitting surface, reducing peak brightness and direct glare, making it more comfortable at night. The combination of the second light cavity 112 and the second light-emitting surface 1121 can form a circumferentially uniform light band or stripe effect, which can create an atmosphere and be used for status indication, such as constant light, breathing, or flashing, enhancing product differentiation.

[0042] Specifically, the dual-light source flashlight 1 includes a housing 11, a first light source 121, and a second light source 122. The housing 11 is an integral support and covering component, with an adjacent first light cavity 111 and a second light cavity 112 formed inside. On the outside, a first light-emitting surface 1111 and a second light-emitting surface 1121 are formed on different sides. Typically, the first light-emitting surface 1111 is located on the front end of the housing 11, and the second light-emitting surface 1121 is located on the side wall or outer periphery of the housing 11 to distinguish directions.

[0043] The cavity wall of the housing 11 isolates the first optical cavity 111 and the second optical cavity 112 from each other and fixes them to the two light sources, for example, through a mounting surface, a threaded seat or a positioning step; the outer surface of the housing 11 is integrally or reliably fixed to the first light-emitting surface 1111 and the second light-emitting surface 1121, for example, by a pressure frame, a snap fastener and a threaded connection, and provides sealing and protection.

[0044] The housing 11 provides mechanical strength and assembly reference for the two optical cavities, ensuring the coaxial / relative positional accuracy of the light source and its respective light-emitting surface; the inner surface of the cavity wall can be treated with reflection or atomization as needed to improve light efficiency or suppress stray light; the thermal conductivity of the housing 11 enables the heat of the two light sources to be quickly conducted and diffused, reducing junction temperature and improving lifespan; the layout of the light-emitting surfaces on different sides brings bidirectional lighting capability and more intuitive user interaction.

[0045] The first optical cavity 111 is located inside the housing 11, facing the first light-emitting surface 1111, and is adjacent to the second optical cavity 112 but has an independent cavity space and optical path boundary. The first optical cavity 111 is used to fix the first light source 121 and forms a stable mounting and heat conduction interface with the housing 11; its opening or channel is directly aligned with the first light-emitting surface 1111, so that the two are arranged opposite each other and the optical path is straight. The first optical cavity 111 serves as an optical cavity for forward functional illumination, ensuring that the light emitted by the first light source 121 is emitted outward through the first light-emitting surface 1111 with low loss; the cavity can be designed with a high-reflectivity or collimation structure to concentrate the beam and extend the range; at the same time, lateral light leakage and glare are reduced through cavity shielding and inner surface treatment.

[0046] The second optical cavity 112 and the first optical cavity 111 are disposed adjacent to each other within the housing 11, but their openings or light-emitting channels point to the second light-emitting surface 1121 located on different sides, such as the side or circumferential position of the housing 11. The second optical cavity 112 is used to fix the second light source 122 and forms an optical path envelope with the cavity wall of the housing 11; its channel is directly connected to the second light-emitting surface 1121, so that the light emitted by the second light source 122 is emitted outward through the second light-emitting surface 1121. The second optical cavity 112 serves as an optical cavity for side / surround lighting or ambient lighting. After the light is diffused, reflected or refracted within the cavity, it is emitted through the second light-emitting surface 1121, resulting in a more uniform and softer side light band; the second optical cavity 112 isolates the high-brightness chip from the user's line of sight, significantly reducing direct glare and forming an aesthetically pleasing circumferential light effect.

[0047] The first light-emitting surface 1111 is located at the front end of the housing 11, directly communicating with the first optical cavity 111 and positioned opposite to the first light source 121. The first light-emitting surface 1111 is reliably fixed to the housing 11 and forms an optical window or light-transmitting interface, ensuring the straightness and sealing of the light path emitted from the first light source 121. The first light-emitting surface 1111 and the first light source 121 are axially opposite each other, with their centers aligned to reduce astigmatism and skewness. As the light-emitting interface for forward illumination, the first light-emitting surface 1111 efficiently extracts the light beam formed by the first light source 121 within the first optical cavity 111, and can perform collimation, transmission, or microstructure diffusion functions, thereby achieving long-range, floodlight, or anti-glare light distribution in different applications; it also provides dustproof, waterproof, and impact-resistant protection.

[0048] The second light-emitting surface 1121 is located on the other side of the housing 11 (different from the first light-emitting surface 1111), directly connected to the second light cavity 112 and facing the user's side view or circumferential field of view. The second light-emitting surface 1121 is fixed to the housing 11, forming a light-transmitting interface for the side light emission of the second light source 122; it is arranged relative to the second light source 122, allowing light to be emitted outward through this surface; its boundary with the second light cavity 112 together determines the light leakage angle and uniformity.

[0049] The second light-emitting surface 1121 outputs the light from the second light source 122 at a lower brightness and a larger angle in the side or circumference, forming a soft light band or textured light effect; by processing the surface of the second light-emitting surface 1121 (such as micro-concave texture or frosting), high-frequency glare can be further filtered, improving visual comfort and atmosphere at night; at the same time, as a status indicator interface, it is beneficial for low power consumption prompts.

[0050] The first light source 121 is disposed in the first optical cavity 111 and is positioned opposite to the first light-emitting surface 1111. It is typically coaxial with the first light-emitting surface 1111 and spatially separated from but adjacent to the second light source 122. The first light source 121 is fixed to the first optical cavity 111 of the housing 11 via a mounting interface and conducts heat; its electrical connection and control are independent. It has a straight optical path that connects to the first light-emitting surface 1111, reducing medium and reflection losses. The first light source 121 provides forward high-brightness illumination with high peak light intensity and longer illumination distance. Its relative positioning ensures that the light-emitting center is aligned with the optical center of the first light-emitting surface 1111, improving beam shaping quality and efficiency. It is suitable for scenarios requiring strong directionality, such as searching, working, and traveling.

[0051] The second light source 122 is disposed in the second optical cavity 112 and is geometrically opposite to the second light-emitting surface 1121, but does not directly face the user's line of sight. The combination of the second optical cavity 112 and the second light-emitting surface 1121 achieves shielding and diffusion. The second light source 122 is adjacent to but independent of the first light source 121. The second light source 122 and the housing 11 are fixed and heat-conducting at the second optical cavity 112. The electrical connection allows for separate channel control with the first light source 121. The light from the second light source 122 is emitted outward through the second light-emitting surface 1121, forming a lateral / circumferential output.

[0052] The second light source 122 provides low-glare, wide-beam side lighting or ambient light. The second light source 122 and the second light-emitting surface 1121 work together to achieve multiple scattering and diffusion of light, making the near-field ambient lighting softer and avoiding glare. It can also provide continuous prompts or decorative light patterns in low-power mode.

[0053] The adjacent arrangement of the first optical cavity 111 and the second optical cavity 112 can shorten the device spacing, reduce the overall size and weight; the shared thermal conductivity and assembly reference of the housing 11 improves heat dissipation and structural stability; the cavity wall isolation ensures that the two optical paths do not interfere with each other, avoiding light crosstalk and light distribution damage. The first light-emitting surface 1111 and the second light-emitting surface 1121 located on different sides can clearly distinguish the lighting direction, with the forward direction used for long-range / work lighting, and the side direction used for short-range lighting or side ambient lighting; the layout on different sides reduces the impact of side direct glare on users when using strong forward light.

[0054] The first light source 121 and the first light-emitting surface 1111 are arranged opposite each other, which makes the light path more direct, facilitates the addition of collimation or diffusion strategies without affecting the lateral light path, and improves the illumination distance and lighting quality.

[0055] The second light source 122 and the second light-emitting surface 1121 are set to be correspondingly independent so that the lateral light path is independent. The diffusion in the cavity and the surface texture of the light-emitting surface work together to reduce the peak brightness and improve uniformity, making it suitable for long-term close-range use.

[0056] Optionally, a reliable seal is achieved through a stable connection between the cavity and the light-emitting surface, and the heat from the two light sources is dispersed through the housing 11 to prevent local overheating. The heat radiation and infrared sensing are diverted between the light-emitting surfaces on different sides, improving the grip comfort.

[0057] Optionally, the first light source 121 outputs light through the first light-emitting surface 1111, which can achieve a long-range type, i.e., high peak light intensity and long illumination distance, or a working type, i.e., a wider beam and uniform illumination, with typical illumination angles of 10°–25° (long-range) or 40°–90° (floodlight).

[0058] The second light source 122 is output through the second light-emitting surface 1121, and the side / circumferential illumination angle can cover 120–320°. The horizontal illuminance at close range is more uniform, and the subjective feeling of glare is significantly reduced, making it suitable for environmental and walking lighting or nighttime atmosphere within a range of 2–5 meters.

[0059] The dual light sources can be lit independently or simultaneously to achieve a combined mode of forward illumination and lateral safety. Under the low blue light warm color setting, the second light-emitting surface 1121 is more comfortable. In an emergency, the second light source 122 can serve as a low-power continuous indicator light.

[0060] In summary, the first light source 121 and the second light source 122 are formed into independent and complementary optical paths by the first light cavity 111 and the second light cavity 112 adjacently arranged within the housing 11, and the first light-emitting surface 1111 and the second light-emitting surface 1121 located on different sides. The first light source 121 is arranged opposite to the first light-emitting surface 1111 to provide efficient forward illumination; the second light source 122 is emitted outward through the second light-emitting surface 1121 to provide soft side / circumferential illumination and ambient effects.

[0061] It is important to emphasize that, because a first lampshade 181 is provided in the second light cavity 112, the light from the second light source 122 needs to pass through the first lampshade 181 before being emitted outward through the second light-emitting surface 1121, thus achieving effective guidance and optimized distribution of the light. The first lampshade 181 covers or encloses part of the second light source 122 and is located in the space between the first and second light sources 122. As an optical element, the first lampshade 181 guides and adjusts the direction and distribution of the light from the second light source 122, improving the uniformity of light and visual comfort on the second light-emitting surface 1121, reducing glare from the second light source 122 directly hitting the user's eyes, and enhancing safety and user experience.

[0062] In some embodiments, optionally, such as Figure 1 and Figure 2 As shown, the housing 11 is composed of a mechanical shell, and its interior is divided into two main spatial regions: an adjacent light source cavity 131 and a power supply cavity 132. The light source cavity 131 includes a first light cavity 111 and a second light cavity 112, which are used to install and fix the first light source 121 and the second light source 122, respectively. The power supply cavity 132 is equipped with a battery 1321 to provide power support.

[0063] Specifically, the light source cavity 131 and the power supply cavity 132 are arranged adjacent to each other. The light source cavity 131 is located at the front end or upper part of the housing 11, and the power supply cavity 132 is located at the rear or lower part of the housing 11. The two are separated by the inner wall of the housing 11. The first light cavity 111 and the second light cavity 112 are arranged side by side or staggered in the light source cavity 131 to ensure that the two light sources are compact and do not interfere with each other. The battery 1321 is located in the power supply cavity 132, close to the bottom of the housing 11 or the gripping area to ensure a reasonable center of gravity.

[0064] Optionally, the housing 11 is formed by machining or injection molding to create a separation structure between the light source cavity 131 and the power supply cavity 132, ensuring that the two cavities are independent and sealed.

[0065] Optionally, the light source cavity 131 and the power supply cavity 132 are connected by an electrical connection channel (wire groove or pin) to achieve power transmission, ensuring that the battery 1321 can effectively supply power to the first light source 121 and the second light source 122.

[0066] Optionally, the first light-emitting surface 1111 and the second light-emitting surface 1121 are fixed to the outside of the housing 11 by threads, snaps or rubber rings to ensure optical path sealing and protection.

[0067] It is understandable that the cavity structure of the housing 11 achieves physical isolation between electrical and optical functions, preventing the heat and electromagnetic interference of the battery 1321 from affecting the performance of the light source. The adjacent light source cavity 131 and power supply cavity 132 make the product structure compact, which is convenient for overall assembly and maintenance. The housing 11 ensures mechanical strength, prevents external forces from damaging the battery 1321 and the light source, and improves the durability of the product.

[0068] Among them, the light source cavity 131 is a space inside the housing 11 specifically designed for installing the light source. It includes two adjacent but independent sub-cavities, the first light cavity 111 and the second light cavity 112. The first light cavity 111 and the second light cavity 112 are separated by cavity partitions or the inner wall of the housing 11 to prevent light crosstalk and excessive heat transfer.

[0069] The first optical cavity 111 is typically located on one side of the housing 11, facing the first light-emitting surface 1111, ensuring that the light from the first light source 121 can be directly emitted through the first light-emitting surface 1111. The second optical cavity 112 is located on the other side of the housing 11, facing the second light-emitting surface 1121, ensuring that the light from the second light source 122 is emitted laterally through the second light-emitting surface 1121. The adjacent arrangement of the two optical cavities reduces the overall volume and improves the structural compactness.

[0070] The light source cavity 131 is integrally formed with the housing 11 or fixed by mechanical connection to ensure the stability of the light source cavity 131. The first light source 121 and the second light source 122 are respectively installed in the corresponding first light cavity 111 and second light cavity 112, and are tightly connected to the light source cavity 131 by connecting parts such as fixing brackets, power interfaces and heat sinks. Optionally, the inner wall of the light source cavity 131 is usually treated with a reflective coating or special texture to optimize light guidance and uniformity.

[0071] It is understood that the light source cavity 131 provides a positioning, fixing and optical environment for the first light source 121 and the second light source 122, ensuring beam quality and light output efficiency. The cavity structure reduces ineffective scattering and loss of light, improves the overall light efficiency of the light source, and the cavity isolation ensures the electrical and optical independence of the two light sources and prevents mutual interference.

[0072] The power supply cavity 132 is a space inside the housing 11 specifically designed to accommodate the battery 1321. It typically has a battery 1321 fixing slot and an electrical interface. The power supply cavity 132 contains a battery 1321 compartment and related springs or contact pieces to ensure that the battery 1321 is securely installed and has a good electrical connection.

[0073] The power supply chamber 132 is located at the rear of the housing 11 or on the handle, facilitating user replacement of the battery 1321 and grip. The power supply chamber 132 is adjacent to the light source chamber 131, and the two are separated by a partition in the housing 11 to ensure safety and thermal management. The power supply chamber 132 is electrically connected to the first light source 121 and the second light source 122 in the light source chamber 131 via an electrical connection channel to ensure stable power supply. The structure of the housing 11 ensures that the power supply chamber 132 is sealed and protected to prevent water and dust from entering and to protect the battery 1321.

[0074] Optionally, a light source cavity 131 and a power supply cavity 132 are arranged adjacent to each other inside the housing 11. Physical isolation maintains a safe distance and thermal isolation between the battery 1321 and the light source, which not only ensures the compactness of the product, but also improves the thermal management and electrical safety performance of the whole machine. The power supply of the battery 1321 is quickly and stably transmitted to the two light sources through the internal electrical connection channel, ensuring the continuous and stable lighting of the light source.

[0075] The first optical cavity 111 and the second optical cavity 112 are arranged adjacent to each other, making the two light sources compact and reducing the product size. At the same time, the independence of their respective optical paths is ensured. The cavity partition and the inner wall of the housing 11 effectively block light crosstalk, avoid visual interference and light efficiency reduction, and facilitate heat dissipation design. The heat of the two optical cavities can be evenly dissipated from different parts of the housing 11 to prevent local overheating.

[0076] In summary, this design achieves a compact structure, independent optical paths, and reasonable thermal management by arranging a light source cavity 131 and a power supply cavity 132 adjacently inside the housing 11. The light source cavity 131 is further divided into a first optical cavity 111 and a second optical cavity 112, which respectively accommodate the first light source 121 and the second light source 122. The housing 11, as the mechanical load-bearing and protective structure, not only ensures the safety and stability of the battery 1321 and the light source, but also optimizes the output effect of forward and side light through a reasonable cavity design. The power supply cavity 132 houses the battery 1321, ensuring a reliable power supply for the system.

[0077] The power supply cavity 132 is located at the far end of the second optical cavity 112, that is, on the side away from the first optical cavity 111. The first optical cavity 111, the second optical cavity 112 and the power supply cavity 132 are arranged in sequence. The power supply cavity 132 is located on the side of the second optical cavity 112 away from the first optical cavity 111, so as to achieve physical isolation between the battery and the first optical cavity 111, avoid heat and electromagnetic interference from affecting the first light source, and ensure the stability of the light source.

[0078] In some embodiments, optionally, such as Figure 3As shown, the first heat sink 14 is disposed within the first optical cavity 111, and the first light source 121 is disposed on the first heat sink 14, fitting tightly together. Optionally, the first heat sink 14 and the first light source 121 are fixedly connected (e.g., by screws, clips, or thermally conductive adhesive) to ensure the mechanical stability and good thermal contact of the light source. The first heat sink 14 is detachably connected to the fixing cover 15, facilitating the assembly, maintenance, and replacement of the light source module. The first heat sink 14 is fixed by the structural support of the first optical cavity 111 in the housing 11, ensuring overall stability.

[0079] The first heat sink 14 serves as a heat conduction medium, rapidly transferring the heat generated by the first light source 121 to the housing 11 or heat dissipation structure, reducing the junction temperature of the light source, ensuring stable light source performance and extending its lifespan. In addition, the first heat sink 14 provides a rigid mounting base for the first light source 121, ensuring the positional accuracy of the light source and preventing displacement of the light source due to vibration or impact, which would affect the optical path.

[0080] Optionally, the first heat sink 14 is often integrated with electrical connection terminals or wires for fixing, to ensure the electrical connection of the first light source 121 is safe and reliable.

[0081] The fixed cover 15 and the first heat sink 14 together form a complete first optical cavity 111. The end face of the fixed cover 15 includes the first light-emitting surface 1111, that is, the front end face of the fixed cover 15 is the light-emitting window of the first optical cavity 111. Optionally, the fixed cover 15 and the first heat sink 14 are connected in a detachable manner, such as by threaded engagement, snap-fit, or locking ring, to facilitate assembly and maintenance. The fixed cover 15 and the first optical cavity 111 of the housing 11 are in close fit to ensure optical sealing and mechanical stability.

[0082] The end face of the fixed cover 15 serves as the first light-emitting surface 1111, providing a light-transmitting interface for the first light source 121, allowing light to be emitted from the first optical cavity 111 efficiently and with low loss. The fixed cover 15 seals the first optical cavity 111, preventing dust and moisture from entering the optical cavity, protecting the first light source 121 and the heat sink, and improving product reliability and service life.

[0083] Optionally, the first light-emitting surface 1111 can be designed as a transparent material (such as tempered glass, polycarbonate, plexiglass, or acrylic) and can integrate optical components (such as lenses, filters, and diffusion films) to optimize the beam shape and light distribution effect. The fixing cover 15 and the first heat sink 14 together form the first optical cavity 111, realizing a complete optical space, ensuring that the light emitted by the light source is effectively managed and guided within the first optical cavity 111, reducing energy loss and stray light, and improving lighting efficiency.

[0084] It can be understood that the first optical cavity 111 is composed of a closed or semi-closed space formed by the first heat sink 14 and the fixing cover 15. The first heat sink 14 is located at the bottom of the first optical cavity 111 and fixes the first light source 121. The fixing cover 15 seals the front end of the first optical cavity 111 and provides the first light-emitting surface 1111.

[0085] The first optical cavity 111 provides a stable and controlled optical environment for the first light source 121. After light is emitted from the first light source 121, it is reflected by the inner wall of the first optical cavity 111 or emitted through the first light-emitting surface 1111, ensuring the directionality and luminous efficiency of the beam. The first heat sink 14 serves as the bottom support structure of the first optical cavity 111 and also undertakes the task of heat dissipation, ensuring that the operating temperature of the first light source 121 is within a safe range. The fixing cover 15 is detachably connected to the first heat sink 14, facilitating the replacement of the first light source 121 or the cleaning of the first light-emitting surface 1111, reducing maintenance costs. The structure of the first optical cavity 111 protects the first light source 121 from the influence of the external environment (such as dust, moisture, impact, etc.), improving product stability.

[0086] The tight connection between the first heat sink 14 and the first light source 121 ensures that the heat from the first light source 121 is efficiently dissipated, preventing overheating that could lead to brightness decay or shortened lifespan. The detachable connection between the fixing cover 15 and the first heat sink 14 facilitates assembly and daily maintenance, improving product maintainability and user experience. The end face of the fixing cover 15, serving as the first light-emitting surface 1111, provides a high-quality optical window, ensuring that the light from the first light source 121 is emitted efficiently and uniformly.

[0087] The first heat sink 14 and the fixed cover 15 together form the first optical cavity 111, creating a stable optical space that effectively controls and guides light, reduces light loss and glare, protects the internal light source and heat dissipation structure, and improves product durability and performance stability.

[0088] In summary, the first heat sink 14 serves as the mechanical fixation and heat dissipation function for the first light source 121, ensuring a stable working environment for the light source. The fixing cover 15 is detachably connected to the first heat sink 14, and its end face is the first light-emitting surface 1111, forming the front light-transmitting window of the first light cavity 111. It has the functions of optical light transmission, protection, and structural enclosure. The first light cavity 111 formed by the two together provides a stable and sealed optical and thermal management environment for the first light source 121, realizing efficient forward lighting output and improving product reliability and maintenance convenience.

[0089] The first heat sink 14 is connected to or abuts against the first lamp cover 181 to fix its position. The specific fixing position is located at the second end of the first lamp cover 181. Specifically, the two can be matched by abutting, detachable connection, or integral molding.

[0090] Optionally, the first heat sink 14 and the first lamp cover 181 are detachably connected by means of clips, bolts, screws, etc.

[0091] Optionally, the first heat sink 14 and the first lamp cover 181 are connected by a step.

[0092] Optionally, the first heat sink 14 and the first lamp cover 181 are integrally formed by welding and injection molding.

[0093] In some embodiments, optionally, the second heat sink 16 is disposed within the second optical cavity 112, serving as a part of the second optical cavity 112. The second heat sink 16 fixes and supports the light source plate 17, becoming the mechanical and thermal management base for the light source plate 17. The second heat sink 16 is structurally tightly integrated with the second optical cavity 112 of the housing 11, ensuring overall stability. The light source plate 17 is disposed on the second heat sink 16, and the light source plate 17 and the second heat sink 16 are fixed together by screws, clips, or thermally conductive adhesive, ensuring good thermal conduction and mechanical stability.

[0094] The second heat sink 16 serves as a heat conduction medium, efficiently transferring the heat generated by the multiple second light sources 122 to the housing 11, reducing the junction temperature of the light sources and improving their stability and lifespan. The second heat sink 16 provides a stable mounting base for the light source board 17 and the multiple second light sources 122, ensuring the flatness of the light source board 17 and the correct positioning of the light sources.

[0095] Optionally, the second heat sink 16 may integrate electrical connection terminals to ensure safe and reliable electrical connection of the light source board 17.

[0096] The light source board 17 is mounted on the second heat sink 16, facing the first optical cavity 111. Multiple second light sources 122 are evenly arranged circumferentially on the same side of the light source board 17, that is, all the second light sources 122 are mounted on the side of the light source board 17 facing the first optical cavity 111.

[0097] The light source board 17 is fixed by the second heat sink 16 to ensure precise spatial matching between the light source board 17 and the second optical cavity 112. The second light source 122 is directly welded or fixed on the light source board 17 to form a light source array.

[0098] The light source board 17 serves as a carrier for multiple second light sources 122, ensuring that the light sources are arranged regularly and with uniform spacing, thereby achieving uniform circumferential light output. The integrated circuits and wires on the light source board 17 enable the parallel or series power supply and control of multiple second light sources 122.

[0099] Optionally, the light source board 17 is in close contact with the second heat sink 16 to ensure effective heat transfer and prevent local overheating.

[0100] Multiple second light sources 122 are evenly distributed on one side of the light source plate 17 facing the first light cavity 111, forming a ring or arc array, so that the light emitted by the second light sources 122 is mainly directed towards the first light cavity 111, but by adjusting the structure of the second light cavity 112 and the housing 11, side or circumferential light emission can be achieved.

[0101] Multiple second light sources 122 arranged evenly along the circumference form a continuous light band, which improves the uniformity of lateral or surrounding illumination and reduces light spots and dark areas. The arrangement of the second light sources 122 facing the first light cavity 111, together with the optical design of the second light cavity 112 (such as reflective surface and refractive structure), enables effective lateral light output and avoids direct glare.

[0102] In summary, the second heat sink 16 is disposed on the second optical cavity 112, serving as a mechanical support and heat dissipation base to ensure stable and efficient heat dissipation for the light source board 17 and the multiple second light sources 122. The light source board 17 is disposed on the second heat sink 16, facing the first optical cavity 111, and serves as a carrier for the multiple second light sources 122, enabling electrical connection and mechanical positioning. The multiple second light sources 122 are evenly arranged circumferentially on the same side of the light source board 17, forming a ring light source array that emits light towards one side of the first optical cavity 111, achieving lateral or surround illumination effects in conjunction with the optical structure of the second optical cavity 112.

[0103] The second heat sink 16 is connected to or abuts against the first lampshade 181 to fix its position. Specifically, the fixing position is located at the first end of the first lampshade 181. The fit between the two can be achieved by abutting, detachable connection, or integral molding. Optionally, the second heat sink 16 and the first lamp cover 181 are detachably connected by means of clips, bolts, screws, etc.

[0104] Optionally, the second heat sink 16 and the first lamp cover 181 are connected by a step.

[0105] Optionally, the second heat sink 16 and the first lamp cover 181 are integrally formed by welding and injection molding.

[0106] Through the second heat sink 16, the light source board 17 and such Figure 2 The reflective surface 141 of the first heat sink 14 shown works together to achieve efficient heat dissipation, uniform distribution and effective light path guidance of the second light source 122. It should be emphasized that the reflective surface 141 design improves light efficiency and light uniformity, reduces glare and enhances the quality of side lighting. The overall structure is reasonable, maintenance is convenient and meets the multi-directional and multi-mode lighting needs of dual-light source flashlights.

[0107] It is understandable that the reflective surface 141 guides the light to achieve lateral or surround illumination of the second light source 122. The reflective surface 141 assists in the diffusion of light, reduces bright spots and dark areas, improves the uniformity of illumination, reduces direct glare, and enhances the user's visual comfort.

[0108] Optionally, the reflective surface 141 is part of the surface of the first heat sink 14, and may be polished or coated to form a high-reflectivity surface. In some embodiments, the first lampshade 181 is optionally detachably connected to the second heat sink 16, and is typically directly installed on the outside or above the second heat sink 16, covering the light source plate 17 where the second light source 122 is located and part of the second heat sink 16. The first lampshade 181 is located inside the second lampshade 182 and is the inner layer structure of the second lampshade 182. The first lampshade 181 is fixed to the second heat sink 16 by a detachable connection method, such as threaded engagement, snap-fit, or locking ring, which facilitates assembly and maintenance.

[0109] The first lampshade 181 and the second lampshade 182 are fitted together. The first lampshade 181, as the inner structure, is covered by the second lampshade 182. The first lampshade 181 provides preliminary optical guidance and protection for the light from the second light source 122, avoids direct scattering of light, improves the beam shape, and protects the second light source 122 and the heat dissipation structure from mechanical impact and dust intrusion.

[0110] The first lampshade 181 serves as the inner base of the second lampshade 182, ensuring the stable installation of the second lampshade 182 and its fixed connection with the second heat sink 16.

[0111] The second lampshade 182 is fitted onto the outside of the first lampshade 181, forming a double-layer structure of the second lampshade 182 and the first lampshade 181. The side of the second lampshade 182 includes a second light-emitting surface 1121, that is, the side wall of the second lampshade 182 is the light-emitting surface of the second light source 122.

[0112] The second lampshade 182 and the first lampshade 181 adopt a fitting structure, with the first lampshade 181 as the inner layer and the second lampshade 182 as the outer layer. They are fixed to the metal handle or housing 11 by mechanical buckles, threads or clamping structures to ensure overall stability and sealing.

[0113] As an outer lampshade, the second lampshade 182 has a second light-emitting surface 1121 on its side that further diffuses and filters the light emitted by the second light source 122, reducing direct glare and improving light uniformity and comfort. The second light-emitting surface 1121 of the second lampshade 182 may be designed with multiple concave arc-shaped stripes or textures to form decorative arc-shaped light textures, enhancing the visual atmosphere and aesthetics.

[0114] The second lampshade 182 is the outer layer of a double-layer lampshade structure, which enhances dustproof and waterproof performance, protects the internal optical structure and light source, and of course also bears a certain mechanical strength to protect the internal components from external impacts.

[0115] The light emitted by the second light source 122 first passes through the first lampshade 181, and is initially shaped and guided by the light guiding or light-transmitting structure of the first lampshade 181. The light then passes through the second lampshade 182, which is fitted over the first lampshade 181. The second light-emitting surface 1121 on the side of the second lampshade 182 diffuses and filters the light. The light that passes through the double lampshade shines outward, forming a uniform, soft, and decorative side beam.

[0116] The double-layer lampshade structure effectively disperses and filters out the peak brightness of light, preventing glare when users look directly at the second light source 122. The multi-layer refraction, reflection and scattering effect makes the light more uniform and soft, suitable for nighttime ambient lighting.

[0117] It should be added that the detachable connection between the first lampshade 181 and the second heat sink 16 facilitates the maintenance and replacement of the light source board 17 and the second light source 122, improves the maintainability of the product, ensures the stable support of the first lampshade 181, and avoids loosening during use, which may lead to optical deviation or mechanical damage.

[0118] The second lampshade 182 is fitted outside the first lampshade 181 to form a double-layer lampshade structure. Combining the different optical and mechanical properties of the two layers, the overall optical performance and structural strength are improved. The side of the second lampshade 182 is used as the second light-emitting surface 1121 to achieve side soft light output and decorative ambient light effect.

[0119] The combination of double-layered lampshades allows light to be refracted and scattered multiple times, creating a uniform, soft, and layered lighting effect while avoiding glare.

[0120] In summary, the first lampshade 181, through its detachable connection with the second heat sink 16, forms the inner structure of the optical space of the second light source 122, providing initial optical guidance and mechanical protection. The second lampshade 182 is fitted over the first lampshade 181, with its side serving as the second light-emitting surface 1121, undertaking the functions of light diffusion, filtering, and decorative ambient lighting. The light emitted by the second light source 122 passes sequentially through the first lampshade 181 and the second lampshade 182, forming a soft, uniform, and decorative side light output, significantly enhancing the flashlight's versatility and user experience.

[0121] In this design, after the second lampshade 182 is installed, the second light-emitting surface 1121 of the entire dual-light source flashlight is located on the side of the second lampshade 182. At this time, the second lampshade 182 and the two heat sinks can form the space of the second light cavity 112. Utilizing the double-layer nesting structure of the second lampshade 182 and the first lampshade 181, combined with the first heat sink 14 and the second heat sink 16, a closed and efficient second light cavity 112 is constructed. The light from the second light source 122 is modulated by the double-layer lampshade and emitted from the second light-emitting surface 1121, achieving high-quality lateral light output, excellent optical performance, strong heat dissipation and mechanical stability, and meeting the lighting needs of multiple scenarios.

[0122] In some embodiments, optionally, such as Figure 4 As shown, the light guide groove 1811 is disposed on the inner wall surface of the first lamp cover 181, that is, the side of the first lamp cover 181 facing the light propagation path of the second heat sink 16 and the second light source 122. The light guide groove 1811 extends along the direction from the second light cavity 112 to the first light cavity 111, that is, from the outside to the inside, that is, it extends closer to the first light source 121, forming a light guiding channel.

[0123] The light guide groove 1811 is a structural feature of the inner wall of the first lamp cover 181, and can be integrally formed with the first lamp cover 181 or formed by precision machining.

[0124] Of course, the light guide groove 1811 can also be set on the outer wall surface of the first lamp cover 181.

[0125] Optionally, the light guide groove 1811 is disposed on the inner wall surface and the outer wall surface of the first lamp cover 181.

[0126] The light guide groove 1811 extends along the direction from the second optical cavity 112 to the first optical cavity 111, and can guide the light emitted by the second light source 122 to propagate along a predetermined path, reducing the disordered scattering of light. Under the action of the light guide groove 1811, the light can undergo multiple refractions and reflections, uniformly disperse the light, and reduce light spots and dark areas.

[0127] In addition, the light is guided more effectively from the first lampshade 181 to the outer second lampshade 182 by the light guide groove 181, which improves the brightness and uniformity of the side light. The light guide groove 1811 controls the direction and scattering angle of the light, reduces the stimulation of the user's eyes by the direct light, and improves visual comfort.

[0128] The optical structure formed by the arrangement of multiple light guide slots 1811 allows the side-emitting light to present multiple sets of fine and layered arc or stripe light effects, enriching the visual expression of the ambient light.

[0129] The light guide groove 1811 extends along the direction from the second optical cavity 112 to the first optical cavity 111, so that after the light source 122 starts, it is gradually guided by the light guide groove 1811 to the front end area of ​​the first lampshade 181 along the light path, ensuring the continuity and stability of the light transmission path. The light is refracted and reflected in the light guide groove 1811, gradually diffused and homogenized, preventing the light from concentrating and forming glaring spots.

[0130] The integrated structure of the light guide groove 1811 and the inner wall of the first lamp cover 181 ensures the dimensional accuracy and shape stability of the light guide groove 1811, avoids the decline in optical performance due to structural loosening or deformation, and the integrated design simplifies the manufacturing process, reduces assembly errors, and improves product consistency.

[0131] The light guide groove 1811 of the first lampshade 181 directs light to the second lampshade 182. The texture or structure of the second lampshade 182 further diffuses and filters the light. The two work together to achieve an ideal lateral uniform soft light effect. The optical function of the light guide groove 1811 provides good incident light conditions for the filtering and decoration of the second lampshade 182, enhancing the overall light effect and visual aesthetics.

[0132] In summary, the inner wall of the first lampshade 181 is provided with multiple light guide grooves 1811, which extend along the direction from the second light cavity 112 to the first light cavity 111, forming a highly efficient light guiding structure. Through refraction and reflection, the light guide grooves 1811 uniformly disperse the light emitted by the second light source 122, improving the uniformity and brightness of the side light, reducing glare, and enhancing visual comfort. The light guide grooves 1811 and the first lampshade 181 are integrally molded, ensuring structural stability and manufacturing precision. The synergistic effect of the light guide grooves 1811 and the second lampshade 182 results in delicate light textures and a pleasing decorative atmosphere in the side light output, enhancing the product's versatility and user experience.

[0133] In some embodiments, the light guide post 19 is optionally disposed inside the first lamp cover 181, located in the space between the first lamp cover 181 and the second heat sink 16.

[0134] One end of the light guide post 19 is detachably connected to the second heat sink 16, and the other end is detachably connected to the first heat sink 14. It penetrates the inner cavity of the first lamp cover 181, connecting the upper and lower heat dissipation structures. The light guide post 19 is connected to the second heat sink 16 and the first heat sink 14 via detachable connections, such as threaded engagement, snap-fit, or locking rings, ensuring mechanical stability and facilitating disassembly and maintenance. The light guide post 19 fits tightly within the internal space of the first lamp cover 181, ensuring positional accuracy and optical path stability.

[0135] The outer surface of the light guide post 19 includes a mirror layer 191, which is a highly reflective optical surface that can effectively reflect light.

[0136] Optionally, the light guide post 19 is typically cylindrical or polygonal, with a mirror layer covering its outer cylindrical wall.

[0137] The mirror layer of the light guide post 19 efficiently reflects the light between the first optical cavity 111 and the second optical cavity 112, changing the light path and enabling lateral light guiding from the direction of the second light source 122 towards the direction of the first optical cavity 111. Through reflection by the mirror layer, the light guide post 19 effectively isolates the light from the first optical cavity 111 and the second optical cavity 112, preventing light crosstalk and ensuring the optical independence of the two optical cavities. The light guide post 19 connects the first heat sink 14 and the second heat sink 16, forming a heat conduction path, which helps to evenly distribute heat between the upper and lower heat sinks and improves the overall thermal management efficiency.

[0138] As a mechanical component connecting the first heat sink 14 and the second heat sink 16, the light guide post 19 ensures the relative positioning accuracy and structural stability of the two heat sinks.

[0139] The light guide column 19 penetrates the first lamp cover 181 and connects the upper and lower heat sinks, ensuring the overall rigidity and positioning accuracy of the structure, avoiding misalignment of optical components due to vibration or impact, forming a heat conduction path between the upper and lower heat sinks, improving heat dissipation efficiency, and ensuring the stable operation of the first light source 121 and the second light source 122.

[0140] It is understandable that by using a highly reflective mirror layer to achieve multiple reflections and effective guidance of light, the light emitted by the second light source 122 can be efficiently guided to the first optical cavity 111 or the lateral light path. The mirror layer reduces the absorption loss of light on the surface of the light guide post 19 and improves the overall light efficiency.

[0141] In summary, the light guide post 19 is located inside the first lampshade 181, connecting the second heat sink 16 and the first heat sink 14, forming a mechanical and thermal management structure that runs through the upper and lower heat sinks. The outer surface of the light guide post 19 has a mirror layer with high reflectivity, effectively reflecting and guiding light to achieve lateral light guidance and optical path isolation of the second light source 122. The light guide post 19 is not only an optical light guide element but also a heat conduction bridge and mechanical connector, ensuring the dual-light source flashlight 1 has a stable structure, efficient thermal management, and excellent optical performance.

[0142] In some embodiments, the other end of the light guide post 19 is optionally connected to the first heat sink 14 via a threaded structure. The threaded fastening achieves mechanical fixation and positioning, ensuring a firm connection between the two and preventing loosening, while also facilitating disassembly and maintenance.

[0143] One end of the light guide post 19 is threaded into the threaded hole of the first heat sink 14. The connection point is located inside the first lamp cover 181 near the first optical cavity 111. The connection point is the mechanical and thermal interface between the light guide post 19 and the first heat sink 14. The threaded connection provides stable mechanical support, ensuring the relative positioning accuracy between the light guide post 19 and the first heat sink 14, and preventing the optical components from shifting due to vibration or impact. The tight threaded connection forms a good thermal conduction path, which is conducive to the heat being conducted from the first heat sink 14 to the light guide post 19, and then dissipated to the outer housing 11, thereby improving the overall heat dissipation efficiency.

[0144] With the light guide post 19 threadedly connected and fixed to the first heat sink 14, the first heat sink 14 directly abuts against the inner surface of the second lampshade 182. The contact surface is located at the structural interface between the first lampshade 181 and the second lampshade 182, forming a mechanical force transmission and positioning reference. The abutting contact between the first heat sink 14 and the second lampshade 182 may be sealed and secured by pressing, snapping, or sealing rings. The contact surface provides structural support and stability for the entire lampshade system.

[0145] In summary, the other end of the light guide post 19 is connected to the first heat sink 14 via a thread, achieving mechanical fastening and heat conduction, ensuring structural stability and efficient heat dissipation. With the light guide post 19 connected to the first heat sink 14, the first heat sink 14 abuts against the second lamp cover 182, forming a rigid reference surface and a sealing interface, improving overall mechanical strength and protective performance, ensuring a stable connection and precise positioning between the light guide post 19, the first heat sink 14, and the second lamp cover 182, and guaranteeing the optical performance, thermal management, and structural durability of the dual-light source flashlight.

[0146] In some embodiments, the first lampshade 181 is optionally horn-shaped, that is, one end has a larger diameter and gradually narrows to the other end with a smaller diameter, forming a cone or tapered shape similar to a horn. The first end of the first lampshade 181 is larger than the second end, showing obvious radial tapering.

[0147] The first end of the first lampshade 181 abuts against the second heat sink 16, and the two are in close contact structurally to form a mechanical positioning and support surface. The second end of the first lampshade 181 faces the first optical cavity 111 or the first heat sink 14, and is smaller in size, forming an optical outlet or an interface for cooperation with other optical elements.

[0148] The first end of the first lampshade 181 is joined to the second heat sink 16 by abutting, and a sealing ring or buckle can be used to enhance the fixing and sealing performance. The first lampshade 181 is firmly fixed by abutting the first end with the second heat sink 16, ensuring the precise alignment of the optical path.

[0149] The horn-shaped structure facilitates the convergence or diffusion of light. The light guide groove 1811 on the inner wall of the first lampshade 181, in conjunction with the horn shape, effectively guides the light emitted by the second light source 122 along a predetermined path. The larger size of the first end provides a wide contact surface, which abuts against the second heat sink 16 to improve the mechanical connection strength and prevent loosening due to vibration.

[0150] It is understandable that a larger contact area facilitates heat transfer from the second heat sink 16 to the first lampshade 181 and the outer structure, thus aiding in heat dissipation. The horn-shaped cavity provides a tapered optical space for the light from the second light source 122, optimizing the directionality and uniformity of the light.

[0151] Specifically, the first end of the first lamp cover 181 abuts against the second heat sink 16, ensuring the stable positioning and mechanical fixation of the first lamp cover 181, avoiding the optical element from shifting due to vibration or impact, forming a good sealing and thermal contact interface, and improving the product's protective performance and heat dissipation efficiency.

[0152] The horn-shaped tapered structure works in conjunction with the light guide groove 1811. By utilizing the shape change in conjunction with the inner wall light guide groove 1811, the transmission path and distribution of light are effectively controlled and optimized, improving the uniformity and brightness of side light. The horn-shaped structure allows the light to gradually converge or diffuse, improving the beam shape and reducing glare.

[0153] It should be added that the larger size at the first end provides strong mechanical support and a wide heat dissipation surface, while the smaller size at the second end is conducive to optical beamforming and interface matching. The tapered design of the structure facilitates the embedding of other optical components or their matching with the first optical cavity 111 and the first heat sink 14.

[0154] In general, the first lampshade 181 is horn-shaped, with the first end being larger than the second end, forming a tapered optical and mechanical structure. The first end of the first lampshade 181 abuts against the second heat sink 16, achieving a stable mechanical connection, good sealing, and excellent heat conduction. The horn-shaped shape, combined with the inner wall light guide groove 1811 design, effectively guides the light from the second light source 122, improving the uniformity of side light and visual comfort.

[0155] In some embodiments, the handle cover 20 is optionally part of the housing 11, mainly forming the grip portion of the flashlight. The handle cover 20 has a power supply cavity 132 for accommodating the battery 1321 and related power supply components. The handle cover 20 is located at the lower or rear part of the housing 11, facilitating the user's grip and replacement of the battery 1321. The power supply cavity 132 is located inside the handle cover 20, providing a space for fixing and protecting the battery 1321.

[0156] The handle cover 20 is mechanically connected to other parts of the housing 11 through means such as threads, snaps, or adhesive bonding to form an integral structure. The handle cover 20 has a power supply cavity 132, which is connected to the light source cavity 131 through an electrical connection channel, so that the battery 1321 can supply power to the first light source 121 and the second light source 122.

[0157] Optionally, the handle cover 20 provides an ergonomic grip shape to enhance comfort and ease of use.

[0158] Optionally, the power supply cavity 132 is connected to the light source circuit in the light source cavity 131 via wires or connectors to ensure stable power supply.

[0159] The connecting end face 201 is located at the top region of the handle cover 20, providing a positioning and support surface for the installation of the second lamp cover 182. The connecting end face 201 is located at the joint between the handle cover 20 and the second lamp cover 182, serving as the contact interface between the two. The second lamp cover 182 abuts against the connecting end face 201, achieving stable mechanical positioning.

[0160] Optionally, the second lampshade 182 is connected to the connecting end face 201 by abutting, and combined with a buckle, thread or sealing ring to achieve stable fixation and sealing protection. The connecting end face 201 serves as a structural reference to ensure the installation accuracy and positional stability of the second lampshade 182.

[0161] In summary, the power supply cavity 132 inside the handle cover 20 securely secures the battery 1321 and features a modular design for the power supply system, improving product maintenance convenience and user ease of battery replacement. The power supply cavity 132 is electrically connected to the light source cavity 131, ensuring stable power supply to the first light source 121 and the second light source 122. The connecting end face 201 provides robust mechanical support and precise positioning for the second lamp cover 182, maintaining the overall stability of the double-layer lamp cover structure. The contact surface, combined with a sealing design, enhances the product's dustproof and waterproof rating, ensuring the safety of internal optical components and circuitry.

[0162] This application also provides a specific embodiment of a dual-light source flashlight, including a clip cover, an upper light source fixing aluminum ring (i.e., a fixing cover), a convex lens, an upper light source fixing bracket, an upper light source (i.e., a first light source), an upper light source heat sink (i.e., a first heat sink), a mirror light guide aluminum column (i.e., a light guide column), a lower lamp cover (i.e., a first lamp cover), an outer lamp cover (i.e., a second lamp cover), a lower light source (i.e., a second light source), a lower light source heat sink (i.e., a second heat sink), and a metal handle (i.e., a handle cover). The lower light source plate (i.e., the light source plate) is fixed to the lower light source heat sink in the correct orientation. The thread at the lower end of the mirror light guide aluminum column is screwed into the screw hole of the lower light source heat sink. The assembled light source heat sink is placed on the inner wall step (i.e., the connecting end face) of the metal handle. The lower lamp cover is placed on the highest step of the lower light source heat sink, and the outer lamp cover is fitted onto the step of the metal handle. The upper light source heat sink is screwed into the upper thread of the mirror light guide aluminum column to secure the outer lamp cover tightly. Place the upper light source, the upper light source mounting bracket, and the convex lens in sequence, and then lock them together by using the internal threads on the upper light source mounting aluminum ring and the internal threads on the upper light source heat sink to completely fix them to the metal handle.

[0163] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0164] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0165] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0166] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dual-light source flashlight, characterized in that, include: The housing includes a first optical cavity and a second optical cavity arranged adjacent to each other, and the housing includes a first light-emitting surface and a second light-emitting surface located on different sides; A first light source is disposed in the first optical cavity, and the first light source is disposed opposite to the first light-emitting surface so that the light emitted by the first light source is emitted outward through the first light-emitting surface; A second light source is disposed in the second optical cavity, and the light emitted by the second light source is emitted outward through the second light-emitting surface; A first lampshade is disposed in the second light cavity, and the first lampshade is disposed between the first light source and the second light source; Some of the light emitted by the second light source passes through the first lampshade and is directed onto the second light-emitting surface.

2. The dual-light source flashlight according to claim 1, characterized in that, The housing specifically includes a power supply cavity, which is located on the side of the second optical cavity away from the first optical cavity, and a battery is disposed inside the power supply cavity.

3. The dual-light source flashlight according to claim 1, characterized in that, Also includes: A first heat sink is disposed in the first optical cavity, and the first light source is disposed in the first heat sink; A fixed cover is detachably connected to the first heat sink. The end face of the fixed cover includes the first light-emitting surface. The fixed cover and the first heat sink together form the first light cavity. The second end of the first lampshade is either in contact with, detachably connected to, or integrally formed with the first heat sink.

4. The dual-light source flashlight according to claim 3, characterized in that, Also includes: The second heat sink is disposed in the second light cavity, and the first end of the first lamp cover is either in contact with the second heat sink or detachably connected to it or integrally formed thereon. A light source board is disposed on the side of the second heat sink facing the first optical cavity, and a plurality of second light sources are evenly arranged on the same side of the light source board along the circumferential direction. The first heat sink has a reflective surface on the side facing the second heat sink, and the second light source is located on the side of the light source plate facing the first light cavity. Part of the light from the second light source is directed to the second light-emitting surface through the reflective surface.

5. The dual-light source flashlight according to claim 4, characterized in that, Also includes: The second lampshade is fitted over the first lampshade, and the side of the second lampshade includes the second light-emitting surface; The second lampshade, the first heat sink, and the second heat sink together form the second light cavity, and the light from the second light source is emitted outward through the first lampshade and the second lampshade.

6. The dual-light source flashlight according to claim 5, characterized in that, The housing also includes: A handle cover, wherein a power supply cavity is provided inside the handle cover; The handle cover includes a connecting end face, and the second lamp cover abuts against the connecting end face.

7. The dual-light source flashlight according to claim 4, characterized in that, Also includes: A light guide column is disposed inside the first lampshade, and one end of the light guide column is detachably connected to the second heat sink, and the other end of the light guide column is detachably connected to the first heat sink. The outer surface of the light guide post includes a mirror layer.

8. The dual-light source flashlight according to claim 7, characterized in that, The other end of the light guide post is threadedly connected to the first heat sink, and when the light guide post is connected to the first heat sink, the first heat sink abuts against the second lamp cover that is sleeved outside the first lamp cover.

9. The dual-light source flashlight according to claim 3, characterized in that, The first lampshade is trumpet-shaped, and the size of the first end of the first lampshade is larger than the size of the second end of the first lampshade.

10. The dual-light source flashlight according to any one of claims 1 to 9, characterized in that, The inner and / or outer walls of the first lampshade are provided with a plurality of light guide grooves, which extend along the direction from the second light cavity to the first light cavity.

Images