Flashlight

Abstract

The utility model discloses a flashlight which comprises a flashlight body. The light source assembly is arranged at one end of the flashlight body and used for emitting light; the first zoom lens is connected with the end, provided with the light source assembly, of the flashlight body, and the first zoom lens is used for allowing light rays emitted by the light source assembly to irradiate and pass through; the cylinder head is arranged at the end, provided with the first zoom lens, of the cylinder body in a sleeving mode, the cylinder head can move in the axial direction of the cylinder body, and a light passing hole right opposite to the first zoom lens is formed in the cylinder head; the second zoom lens is connected with the cylinder head, the second zoom lens and the first zoom lens are oppositely arranged at an interval, and the second zoom lens can move along with the cylinder head so as to change the distance between the second zoom lens and the first zoom lens; the first zoom lens is provided with a plurality of non-coplanar first optical surfaces, and the second zoom lens is provided with a plurality of non-coplanar second optical surfaces. The first zoom lens and the second zoom lens in the flashlight are of sheet structures and are thin, so that the whole structure of the flashlight is contracted, and the length of the flashlight is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting equipment, in particular to a flashlight. Background Art

[0002] A zoom flashlight is a handheld lighting tool, which has gradually gained the favor of users because it can change the irradiation range of light according to the needs of the usage scenario.

[0003] In the related art, a zoom flashlight usually adopts a combined structure of multiple convex lenses. Since the convex lenses are relatively thick, the overall structure of the flashlight is stretched and the stretching distance is long, resulting in a relatively long length of the flashlight, which is inconvenient for storage and carrying, and the user experience is poor. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a flashlight, aiming to solve the technical problem that the current zoom flashlight has a relatively long length due to the use of convex lenses, which is inconvenient for storage and carrying.

[0005] To achieve the above purpose, the utility model proposes a flashlight, which includes:

[0006] A barrel body;

[0007] A light source assembly, arranged at one end of the barrel body, and the light source assembly is used for emitting light;

[0008] A first zoom lens, connected to the end of the barrel body where the light source assembly is arranged, and the first zoom lens is used for allowing the light emitted by the light source assembly to irradiate through;

[0009] A barrel head, sleeved on the end of the barrel body where the first zoom lens is arranged, the barrel head can move along the axial direction of the barrel body, and the barrel head is provided with a light passing hole that is directly opposite to the first zoom lens;

[0010] A second zoom lens, connected to the barrel head and arranged at an interval opposite to the first zoom lens, and the second zoom lens can move with the barrel head to change the distance from the first zoom lens;

[0011] Wherein, a plurality of non-coplanar first optical surfaces are arranged on the surface of the first zoom lens facing away from the second zoom lens, and a plurality of non-coplanar second optical surfaces are arranged on the surface of the second zoom lens facing away from the first zoom lens.

[0012] In some embodiments, a plurality of first protrusions are provided on a surface of the first zoom lens facing away from the second zoom lens, and a surface of each first protrusion forms a first optical surface. A plurality of second protrusions are provided on a surface of the second zoom lens facing away from the first zoom lens, and a surface of each second protrusion forms a second optical surface.

[0013] In some embodiments, one of the first protrusions of the plurality of first protrusions protrudes from a central position of the first zoom lens, and the remaining first protrusions are divided into multiple circles and distributed around the first protrusion protruding from the central position of the first zoom lens. One of the second protrusions of the plurality of second protrusions protrudes from a central position of the second zoom lens, and the remaining second protrusions are divided into multiple circles and distributed around the second protrusion protruding from the central position of the second zoom lens.

[0014] In some embodiments, each of the first optical surfaces is disposed opposite to a second optical surface, and a central axis of each first optical surface and a central axis of the second optical surface disposed opposite thereto are correspondingly arranged; and / or,

[0015] Both the first optical surface and the second optical surface are curved surfaces; and / or,

[0016] Both the first zoom lens and the second zoom lens are microlens arrays.

[0017] In some embodiments, the flashlight further includes:

[0018] An elastic limiting ring, sleeved on the barrel body and located between an outer wall of the barrel body and an inner wall of the barrel head, and the elastic limiting ring restricts the movement of the barrel head by pressing against the barrel head.

[0019] In some embodiments, an installation groove adapted to the elastic limiting ring is provided on an outer wall of the barrel body, and the elastic limiting ring is received in the installation groove; and / or,

[0020] The elastic limiting ring is an annular silicone member.

[0021] In some embodiments, a first limiting protrusion is provided on an inner wall of the barrel head, and a second limiting protrusion is provided on an outer wall of the barrel body. The second limiting protrusion and the first limiting protrusion are disposed opposite to each other along an axial direction of the barrel body, and the second limiting protrusion and the first limiting protrusion are in limiting cooperation to limit a distance by which the barrel head moves relative to the barrel body away from the first zoom lens; and / or,

[0022] The outer wall of the barrel body is provided with a limiting step, and the limiting step limits the barrel head to define the distance that the barrel head moves relative to the barrel body in the direction close to the first zoom lens.

[0023] In some embodiments, an annular groove is provided on the inner wall of the barrel head, and the flashlight further includes:

[0024] A light-transmitting sheet, which is installed in the annular groove and covers the light-passing hole;

[0025] A sealing ring, which is clamped between the peripheral edge of the light-transmitting sheet and the groove side wall of the annular groove, and the sealing ring is used to seal the gap between the light-transmitting sheet and the annular groove.

[0026] In some embodiments, the light source assembly includes:

[0027] A substrate;

[0028] A light-emitting element, which is arranged on the substrate;

[0029] A lens, which is arranged on the light-emitting side of the light-emitting element, and the lens is used to refract the light emitted by the light-emitting element.

[0030] In some embodiments, the light source assembly further includes:

[0031] A positioning seat, which is arranged on the substrate. A positioning hole is formed on the positioning seat, and the central axis of the positioning hole is collinear with the central axis of the barrel body. The light-emitting element is accommodated in the positioning hole.

[0032] When the flashlight of the present utility model is turned on and used, the light emitted by the light source assembly provided on the barrel body is first projected onto the first optical surface of the first zoom lens and passes through the first zoom lens, then passes through the second zoom lens and exits from the second optical surface of the second zoom lens, and finally exits from the light-passing hole of the barrel head to achieve lighting. Moreover, the user can operate the barrel head to move axially along the barrel body to extend or retract, change the distance between the second zoom lens and the first zoom lens, and thus adjust the lighting range of the light. Among them, compared with the convex lens used in the existing technology flashlight, the first zoom lens and the second zoom lens used in the flashlight of the present utility model are in a sheet structure with a relatively thin thickness, realizing the contraction setting of the overall structure of the flashlight, reducing the length of the flashlight, making the flashlight convenient for storage and carrying, and helping to improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of a flashlight in an embodiment of the present utility model;

[0034] Figure 2 is a schematic internal structure diagram of a flashlight in an embodiment of the present utility model;

[0035] Figure 3 is a schematic diagram of the internal structure of a flashlight in another embodiment of the present utility model;

[0036] Figure 4 is a schematic diagram of a partial structure of a flashlight in yet another embodiment of the present utility model;

[0037] Figure 5 is a schematic diagram of the structure of the first zoom lens of a flashlight in yet another embodiment of the present utility model;

[0038] Figure 6 is a schematic diagram of the structure of the second zoom lens of a flashlight in yet another embodiment of the present utility model. Detailed implementation manners

[0039] Next, the solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0041] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0042] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0043] An embodiment of the present utility model provides a flashlight, referring to Figures 1 to 3, the flashlight includes: a barrel body 100, a light source assembly 200, a first zoom lens 300, a barrel head 400, and a second zoom lens 500. The light source assembly 200 is provided at one end of the barrel body 100 and is used to emit light. The first zoom lens 300 is connected to the end of the barrel body 100 where the light source assembly 200 is provided, and the first zoom lens 300 is used for the light emitted by the light source assembly 200 to irradiate through. The barrel head 400 is sleeved on the end of the barrel body 100 where the first zoom lens 300 is provided. The barrel head 400 can move axially along the barrel body 100. The barrel head 400 is provided with a light passing hole G that is directly opposite to the first zoom lens 300. The second zoom lens 500 is connected to the barrel head 400 and is disposed opposite to the first zoom lens 300 at an interval. The second zoom lens 500 can move with the barrel head 400 to change the distance from the first zoom lens 300.

[0044] Wherein, on the side of the first zoom lens 300 facing away from the second zoom lens 500, there are provided a plurality of non-coplanar first optical surfaces 10, and on the side of the second zoom lens 500 facing away from the first zoom lens 300, there are provided a plurality of non-coplanar second optical surfaces 20.

[0045] In the flashlight of this embodiment, the shape of the barrel body 100 can be cylindrical, and there is an accommodation cavity inside for installing components such as a circuit board and a battery. The light source assembly 200 is provided at one end of the barrel body 100 and can emit light for illumination. Specifically, as Figure 4 shown, an light-emitting hole C is formed at one end of the barrel body 100. The light source assembly 200 is installed inside the barrel body 100, and the light emitted by the light source assembly 200 is emitted through the light-emitting hole C. Among them, the structural composition that the light source assembly 200 can adopt will be further described in subsequent embodiments and will not be elaborated here.

[0046] The first zoom lens 300 is provided at the end of the barrel body 100 where the light source assembly 200 is provided for the light emitted by the light source assembly 200 to irradiate through. Specifically, the first zoom lens 300 covers the light-emitting hole C of the barrel body 100. Optionally, the first zoom lens 300 is detachably connected to the barrel body 100 through a first mounting bracket, that is, the first zoom lens 300 is installed on the first mounting bracket, and the first mounting bracket is detachably provided on the barrel body 100. Among them, the detachable connection method between the first mounting bracket and the barrel body 100 can be, for example, a snap connection.

[0047] At the end of the barrel body 100 where the first zoom lens 300 is provided, the barrel head 400 is sleeved on the barrel body 100. The light passing hole G provided on the barrel head 400 is located at one end thereof, and the barrel body 100 extends into the interior of the barrel head 400 from the other end of the barrel head 400 and forms a sliding fit with the barrel head 400. The barrel head 400 can move on the barrel body 100 along the axial direction of the barrel body 100, such as moving outwards or moving inwards.

[0048] The second zoom lens 500 is disposed on the barrel head 400, and the second zoom lens 500 is disposed opposite to the first zoom lens 300 at an interval. Specifically, the second zoom lens 500 is fixed within the barrel head 400. Optionally, the second zoom lens 500 is detachably connected to the barrel head 400 through a second mounting bracket, that is, the second zoom lens 500 is mounted on the second mounting bracket, and the second mounting bracket is detachably disposed on the barrel head 400. Among them, the detachable connection method between the second mounting bracket and the barrel head 400 can be, for example, snap connection. It can be understood that when the barrel head 400 moves axially along the barrel body 100 on the barrel body 100, the second zoom lens 500 on the barrel head 400 will move accordingly, thereby changing the distance between the second zoom lens 500 and the first zoom lens 300.

[0049] The first zoom lens 300 is provided with a plurality of first optical surfaces 10, and the plurality of first optical surfaces 10 are located on the side of the first zoom lens 300 facing away from the second zoom lens 500 and are not coplanar. The function is to change the optical path of the light passing through the first zoom lens 300. Specifically, when the light passes through the first optical surface 10 of the first zoom lens 300, the light is refracted. In addition, the second zoom lens 500 is provided with a plurality of second optical surfaces 20, and the plurality of second optical surfaces 20 are located on the side of the second zoom lens 500 facing away from the first zoom lens 300 and are not coplanar. The function is to change the optical path of the light passing through the second zoom lens 500. Specifically, when the light passes through the second optical surface 20 of the second zoom lens 500, the light is refracted.

[0050] When the flashlight is turned on and used, the light emitted by the light source assembly 200 provided on the barrel body 100 is first projected onto the first optical surface 10 of the first zoom lens 300 and passes through the first zoom lens 300, then passes through the second zoom lens 500 and exits from the second optical surface 20 of the second zoom lens 500, and finally exits from the light passing hole G of the barrel head 400 for illumination.

[0051] Among them, as Figure 2 shown, when the barrel head 400 moves axially outward along the barrel body 100 and extends out, the distance between the second zoom lens 500 and the first zoom lens 300 gradually increases, the optical path angle becomes smaller, presenting a spotlight effect, and long-distance illumination can be achieved; conversely, as Figure 3 shown, when the barrel head 400 moves axially inward along the barrel body 100 and retracts, the distance between the second zoom lens 500 and the first zoom lens 300 gradually decreases, the optical path angle becomes larger, presenting a floodlight effect, and near-distance illumination can be achieved. Therefore, the user can switch the flashlight from near-distance illumination to long-distance illumination by operating the barrel head 400 to extend out; and by operating the barrel head 400 to retract, the flashlight can be switched from long-distance illumination to near-distance illumination.

[0052] In this embodiment, the user can move the barrel head 400 along the axial direction of the barrel body 100 to extend or retract, changing the distance between the second zoom lens 500 and the first zoom lens 300, thereby realizing the adjustment of the light irradiation range. The operation of adjusting the light irradiation range is simple, time-saving and labor-saving.

[0053] Among them, compared with the convex lens used in the existing technology flashlight, the first zoom lens 300 and the second zoom lens 500 used in the flashlight of the present utility model are in a sheet structure with a relatively thin thickness, realizing the contraction setting of the overall structure of the flashlight, reducing the length of the flashlight, making the flashlight convenient for storage and carrying, and helping to improve the user experience.

[0054] In some embodiments, referring to Figure 5 and Figure 6 , on the side of the first zoom lens 300 facing away from the second zoom lens 500, a plurality of first protrusions T1 are provided, and a first optical surface 10 is formed on the surface of each first protrusion T1. On the side of the second zoom lens 500 facing away from the first zoom lens 300, a plurality of second protrusions T2 are provided, and a second optical surface 20 is formed on the surface of each second protrusion T2.

[0055] In this embodiment, on the first zoom lens 300, a plurality of first protrusions T1 protrude from the side of the first zoom lens 300 facing away from the second zoom lens 500, and a plurality of first optical surfaces 10 are correspondingly formed on the surfaces of the plurality of first protrusions T1. Among them, the layout form of the plurality of first protrusions T1 on the first zoom lens 300 can be set according to the light output requirements. When the light emitted by the light source assembly 200 is respectively projected onto the plurality of first protrusions T1 of the first zoom lens 300, the first optical surface 10 formed on the surface of each first protrusion T1 correspondingly changes the optical path of the light, realizing the refraction of the light. On the second zoom lens 500, a plurality of second protrusions T2 protrude from the side of the second zoom lens 500 facing away from the first zoom lens 300, and a plurality of second optical surfaces 20 are correspondingly formed on the surfaces of the plurality of second protrusions T2. Among them, the layout form of the plurality of second protrusions T2 on the second zoom lens 500 can be set according to the light output requirements. When the light passes through the second zoom lens 500, it passes through the plurality of second protrusions T2 of the second zoom lens 500 respectively, and the second optical surface 20 formed on the surface of each second protrusion T2 correspondingly changes the optical path of the light, realizing the refraction of the light.

[0056] In some embodiments, referring to Figure 5 and Figure 6, one of the plurality of first protrusions T1 protrudes from the central position of the first zoom lens 300, and the remaining first protrusions T1 are distributed in multiple circles around the first protrusion T1 protruding from the central position of the first zoom lens 300. One of the plurality of second protrusions T2 protrudes from the central position of the second zoom lens 500, and the remaining second protrusions T2 are distributed in multiple circles around the second protrusion T2 protruding from the central position of the second zoom lens 500.

[0057] In this embodiment, the plurality of first protrusions T1 present a layout form of one center and multiple circles on the first zoom lens 300. The light emitted from the central position of the light source assembly 200 passes through and is refracted by the first optical surface 10 of the first protrusion T1 at the central position of the first zoom lens 300. The light emitted from the remaining positions of the light source assembly 200 is divided by circles, and each circle of light passes through and is refracted by the first optical surface 10 of the first protrusions T1 at the corresponding positions of the first zoom lens 300. Moreover, the plurality of second protrusions T2 present a layout form of one center and multiple circles on the second zoom lens 500. The light passing through the central position of the first zoom lens 300 passes through and is refracted by the second light surface of the second protrusion T2 at the central position of the second zoom lens 500. The light passing through the remaining positions of the second zoom lens 500 is divided by circles, and each circle of light passes through and is refracted by the second optical surface 20 of the second protrusions T2 at the corresponding positions of the second zoom lens 500. It can be understood that a symmetrical layout is formed between the first protrusions T1 on the first zoom lens 300 and the second protrusions T2 on the second zoom lens 500. Even if the barrel head 400 rotates and the angular position changes, the plurality of first protrusions T1 on the first zoom lens 300 still maintain a one-to-one corresponding position relationship with the plurality of second protrusions T2 on the second zoom lens 500, without affecting the light emission path, thereby ensuring the light emission effect.

[0058] In some embodiments, refer to Figures 2 to 4, each first optical surface 10 is disposed opposite to a second optical surface 20, and the central axis of each first optical surface 10 is correspondingly disposed with the central axis of the second optical surface 20 opposite thereto; specifically, the light rays refracted by the first optical surface 10 of the first zoom lens 300 will correspondingly be incident on the second optical surface 20 of the second zoom lens 500 opposite to the first optical surface 10. Since the central axes between the second optical surface 20 and the first optical surface 10 correspond to each other, the formed light spots are regular and not messy, and during the adjustment process of the light irradiation range, the change in the optical path angle is large and the adjustment effect is good. And / or, in some embodiments, both the first optical surface 10 and the second optical surface 20 are curved surfaces. Specifically, the curved surface can be a convex curved surface. Both the first optical surface 10 and the second optical surface 20 adopt the shape design of curved surfaces so that when the light passes through the first optical surface 10 and the second optical surface 20, the outgoing path is changed to realize the refraction of the light. And / or, in some embodiments, both the first zoom lens 300 and the second zoom lens 500 are microlens arrays. Specifically, both the first zoom lens 300 and the second zoom lens 500 are microlens arrays, and the first optical surface 10 provided on the first zoom lens 300 and the second optical surface 20 provided on the second zoom lens 500 are both tiny optical surfaces with small sizes, which helps to realize the thin and light design of the first zoom lens 300 and the second zoom lens 500.

[0059] In some embodiments, referring to Figures 2 to 4 , the flashlight further includes: an elastic limiting ring 600, the elastic limiting ring 600 is sleeved on the barrel body 100 and is located between the outer wall of the barrel body 100 and the inner wall of the barrel head 400, and the elastic limiting ring 600 restricts the movement of the barrel head 400 by pressing against the barrel head 400. In this embodiment, the elastic limiting ring 600 is clamped between the barrel body 100 and the barrel head 400 and is deformed by extrusion, so as to apply an elastic force to the barrel head 400 to press against the barrel head 400. If it is necessary to adjust the light irradiation range, the user can apply an external force to the barrel head 400 to make it move axially along the barrel body 100; and after the adjustment of the light irradiation range is completed, the barrel head 400 is restricted from moving by the pressing of the elastic limiting ring 600, and then is automatically fixed to the barrel body 100, with a simple structure and easy to use. Among them, the number of the elastic limiting rings 600 can be set to one or more. If a plurality of elastic limiting rings 600 are provided, the plurality of elastic limiting rings 600 are sequentially arranged at intervals along the axial direction of the barrel body 100.

[0060] In some embodiments, referring to Figures 2 to 4, an installation groove 110 adapted to the elastic limiting ring 600 is provided on the outer wall of the barrel body 100, and the elastic limiting ring 600 is accommodated in the installation groove 110; the installation groove 110 provided on the outer wall of the barrel body 100 is adapted to the elastic limiting ring 600, and its function is to install the elastic limiting ring 600. When the elastic limiting ring 600 is sleeved on the barrel body 100, it is correspondingly accommodated in the installation groove 110 to achieve positioning and installation on the barrel body 100, which can avoid being driven to shift due to the movement of the barrel head 400. This not only helps to improve the tightening effect on the barrel head 400, but also can prevent the elastic limiting ring 600 from falling off. And / or, in some embodiments, the elastic limiting ring 600 is an annular silicone part. Among them, when the elastic limiting ring 600 is made of an annular silicone part, it can also seal the gap between the outer wall of the barrel body 100 and the inner wall of the barrel head 400 to achieve the functions of waterproofing and dustproofing.

[0061] In some embodiments, referring to Figure 2 and Figure 3 , a first limiting protrusion X1 is provided on the inner wall of the barrel head 400, and a second limiting protrusion X2 is provided on the outer wall of the barrel body 100. The second limiting protrusion X2 and the first limiting protrusion X1 are arranged oppositely along the axial direction of the barrel body 100. The second limiting protrusion X2 and the first limiting protrusion X1 are in limiting cooperation to limit the distance that the barrel head 400 moves relative to the barrel body 100 in the direction away from the first zoom lens 300; specifically, during the process that the user operates the barrel head 400 to move relative to the barrel body 100 in the direction away from the first zoom lens 300 (i.e., the barrel head 400 extends out), when the barrel head 400 moves a certain distance, the first limiting protrusion X1 on the inner wall of the barrel head 400 reaches the second limiting protrusion X2 on the outer wall of the barrel body 100, and the second limiting protrusion X2 blocks the first limiting protrusion X1 to limit the continuous movement of the barrel head 400, thereby limiting the distance that the barrel head 400 moves relative to the barrel body 100 in the direction away from the first zoom lens 300 (i.e., the extending distance of the barrel head 400). In this way, the limit adjustment position of the high beam illumination can be limited. And under the action of the limiting cooperation between the provided second limiting protrusion X2 and the first limiting protrusion X1, the barrel head 400 can also be prevented from falling off the barrel body 100. Among them, optionally, both the first limiting protrusion X1 and the second limiting protrusion X2 are annular protrusions. And / or, in some embodiments, referring to Figure 2 and Figure 3, a limiting step X3 is provided on the outer wall of the barrel body 100. The limiting step X3 limits the barrel head 400 through a stop barrel head 400 to define the distance that the barrel head 400 moves relative to the barrel body 100 in the direction approaching the first zoom lens 300. Specifically, during the process that the user operates the barrel head 400 to move relative to the barrel body 100 in the direction approaching the first zoom lens 300 (i.e., the barrel head 400 retracts), when the barrel head 400 moves a certain distance, the barrel head 400 reaches the limiting step X3 on the outer wall of the barrel body 100, and the limiting step X3 blocks the barrel head 400 to limit the continuous movement of the barrel head 400, thereby defining the distance that the barrel head 400 moves relative to the barrel body 100 in the direction approaching the first zoom lens 300 (i.e., the retraction distance of the barrel head 400). In this way, the limit adjustment position of the near-light illumination can be defined.

[0062] In some embodiments, referring to Figures 2 to 4 , an annular groove 410 is provided on the inner wall of the barrel head 400. The flashlight further includes: a light-transmitting sheet 700 and a sealing ring 800. The light-transmitting sheet 700 is installed in the annular groove 410 and covers the light-passing hole G; the sealing ring 800 is clamped between the peripheral edge of the light-transmitting sheet 700 and the groove side wall of the annular groove 410, and the sealing ring 800 is used to seal the gap between the light-transmitting sheet 700 and the annular groove 410. Specifically, when the flashlight is turned on, the light source assembly 200 emits light, and the light sequentially passes through the first zoom lens 300 and the second zoom lens 500 and reaches the light-transmitting sheet 700, and then is emitted from the light-passing hole G after passing through the light-transmitting sheet 700. By providing the light-transmitting sheet 700 at the light-passing hole G, the internal parts such as the light source assembly 200, the first zoom lens 300, and the second zoom lens 500 of the flashlight can be protected. Among them, the light-transmitting sheet 700 can be a glass sheet, and the glass can be selected from silicon carbide glass, tempered glass, etc., which are not easily worn and scratched. In addition, a sealing ring 800 is clamped between the peripheral edge of the light-transmitting sheet 700 and the groove side wall of the annular groove 410. Under the sealing action of the provided sealing ring 800, external dust, impurities, liquids, etc. are not easily introduced into the flashlight, realizing the protection of the electronic components inside the flashlight. Among them, one or more sealing rings 800 can be provided. When one sealing ring 800 is provided, optionally, the sealing ring 800 is located on the side of the light-transmitting sheet 700 facing away from the light-passing hole G to avoid the sealing ring 800 being exposed at the light-passing hole G. In this way, while ensuring the sealing effect, the aesthetic effect of the appearance can be taken into account.

[0063] In some embodiments, referring to Figures 2 to 4The light source assembly 200 includes: a substrate 210, a light emitting member 220 and a lens 230, wherein the light emitting member 220 is arranged on the substrate 210; the lens 230 is arranged on the light emitting side of the light emitting member 220, and the lens 230 is used to refract the light emitted by the light emitting member 220. With the axial direction of the barrel 100 as the reference direction, the substrate 210, the light emitting member 220 and the lens 230 are arranged in sequence, wherein the light emitting member 220 can be an LED lamp bead, which is installed on the substrate 210. The shape of the lens 230 is roughly funnel-shaped, with a smaller outer diameter at one end and a larger outer diameter at the other end, and a receiving hole is configured at the end with a smaller outer diameter. The lens 230 is connected to the light emitting member 220 through the end with a smaller outer diameter, and the light emitting member 220 at least partially extends into the receiving hole. Optionally, the lens 230 is a TIR (Total Internal Reflection) lens, which has high light energy utilization, and has many advantages such as high efficiency, low loss, small light collection area and good uniformity. When the flashlight is turned on, the light emitting element 220 of the light source assembly 200 emits light, which first enters the lens 230, and the lens 230 refracts the light to the first zoom lens 300, and transmits from the first zoom lens 300 and cooperates with the second zoom lens 500 to emit all the light. Among them, the substrate 210 can be a metal heat sink, which not only plays the role of installing the light emitting element 220, but also can achieve the heat dissipation of the light emitting element 220, and quickly conducts the heat energy generated by the light emitting element 220 when emitting light through the substrate 210, avoids excessive temperature, and improves the light emitting efficiency and stability of the light emitting element 220. Optionally, the substrate 210 is an aluminum substrate.

[0064] In some embodiments, reference Figures 2 to 4 The light source assembly 200 further includes: a positioning seat 240, the positioning seat 240 is arranged on the substrate 210, a positioning hole D is constructed on the positioning seat 240, the central axis of the positioning hole D is arranged in line with the central axis of the barrel 100, and the light-emitting member 220 is accommodated in the positioning hole D. In this embodiment, the positioning hole D set on the positioning seat 240 is adapted to the outer contour of the light-emitting member 220, for example, the outer contour of the light-emitting member 220 is in a square shape, and the positioning hole D is a square hole correspondingly. Since the central axis of the positioning hole D is arranged in line with the central axis of the barrel 100, the light-emitting member 220 is accommodated in the positioning hole D of the positioning seat 240 to achieve a central arrangement on the barrel 100, and cooperates with the lens 230 to achieve a better light-emitting effect, which helps to improve the light-emitting effect.

[0065] The above description is only a partial or preferred embodiment of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A flashlight, characterized in that: include: barrel; A light source assembly is disposed at one end of the barrel, and is used to emit light; A first zoom lens is connected to one end of the barrel provided with the light source assembly, and the first zoom lens is used for allowing the light emitted by the light source assembly to pass through; A barrel head, sleeved on one end of the barrel body provided with the first zoom lens, the barrel head can move along the axial direction of the barrel body, and the barrel head is provided with a light hole directly opposite to the first zoom lens; A second zoom lens is connected to the barrel head and is arranged opposite to the first zoom lens with a distance therebetween, and the second zoom lens can move with the barrel head to change the distance between the second zoom lens and the first zoom lens; Wherein, a surface of the first zoom lens facing away from the second zoom lens is provided with a plurality of non-coplanar first optical surfaces, and a surface of the second zoom lens facing away from the first zoom lens is provided with a plurality of non-coplanar second optical surfaces.

2. The flashlight according to claim 1, characterized in that: A plurality of first protrusions are arranged on a side of the first zoom lens facing away from the second zoom lens, and a surface of each of the first protrusions forms a first optical surface. A plurality of second protrusions are arranged on a side of the second zoom lens facing away from the first zoom lens, and a surface of each of the second protrusions forms a second optical surface.

3. The flashlight according to claim 2, characterized in that: One of the multiple first protrusions is protruding at the center position of the first zoom lens, and the rest of the first protrusions are divided into multiple circles and distributed around the periphery of the first protrusion protruding at the center position of the first zoom lens. One of the multiple second protrusions is protruding at the center position of the second zoom lens, and the rest of the second protrusions are divided into multiple circles and distributed around the periphery of the second protrusion protruding at the center position of the second zoom lens.

4. The flashlight according to any one of claims 1 to 3, characterized in that: Each of the first optical surfaces is disposed opposite to one of the second optical surfaces, and the central axis of each of the first optical surfaces is disposed corresponding to the central axis of the second optical surface disposed opposite to the first optical surface; and / or, The first optical surface and the second optical surface are both curved surfaces; and / or, The first zoom lens and the second zoom lens are both micro lens arrays.

5. The flashlight according to any one of claims 1 to 3, characterized in that: The flashlight also includes: The elastic limiting ring is sleeved on the barrel body and located between the outer wall of the barrel body and the inner wall of the barrel head. The elastic limiting ring is pressed against the barrel head to limit the movement of the barrel head.

6. The flashlight according to claim 5, characterized in that: The outer wall of the barrel is provided with a mounting groove adapted to the elastic limiting ring, and the elastic limiting ring is accommodated in the mounting groove; and / or, The elastic limiting ring is an annular silicone member.

7. The flashlight according to any one of claims 1 to 3, characterized in that: The inner wall of the barrel head is provided with a first limiting protrusion, and the outer wall of the barrel body is provided with a second limiting protrusion, the second limiting protrusion and the first limiting protrusion are arranged opposite to each other along the axial direction of the barrel body, and the second limiting protrusion cooperates with the first limiting protrusion through limiting, so as to limit the distance that the barrel head moves relative to the barrel body away from the first zoom lens; and / or, The outer wall of the barrel is provided with a limiting step, and the limiting step blocks the barrel head to limit the distance that the barrel head moves relative to the barrel body in a direction close to the first zoom lens.

8. The flashlight according to any one of claims 1 to 3, characterized in that: The inner wall of the barrel head is provided with an annular groove, and the flashlight further comprises: A light-transmitting sheet, installed in the annular groove and covering the light-through hole; The sealing ring is sandwiched between the periphery of the light-transmitting sheet and the groove side wall of the annular groove, and the sealing ring is used to seal the gap between the light-transmitting sheet and the annular groove.

9. The flashlight according to any one of claims 1 to 3, characterized in that: The light source assembly comprises: substrate; A light emitting element is disposed on the substrate; The lens is arranged on the light emitting side of the light emitting component, and the lens is used for refracting the light emitted by the light emitting component.

10. The flashlight according to claim 9, characterized in that The light source assembly further comprises: A positioning seat is arranged on the base plate, a positioning hole is constructed on the positioning seat, a central axis of the positioning hole is arranged colinearly with a central axis of the barrel, and the light-emitting component is accommodated in the positioning hole.

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