Lamp head and flashlight

Abstract

This invention belongs to the field of lighting equipment technology, and particularly relates to a lamp holder and a flashlight. The lamp holder includes: a front cover, comprising a cover body and a lens integrally formed on the cover body; the cover body has a socket hole, the lens is received in the socket hole, and the peripheral sidewall of the lens abuts against the wall of the socket hole along the radial direction of the lens; a lamp holder housing, having a mounting cavity; the lamp holder housing is connected to the cover body and partially extends into the socket hole so that the lens covers the opening of the mounting cavity; a light-emitting component, disposed at the bottom of the mounting cavity, and projects light toward the lens and generates heat in a conductive state; and a heat dissipation component, received in the mounting cavity and connected to the light-emitting component and the lamp holder housing to transfer the heat of the light-emitting component to the lamp holder housing. The lamp holder provided by this application has strong durability.

Description

Technical Field

[0001] The invention belongs to the technical field of lighting equipment, and in particular relates to a lamp holder and a flashlight. Background Art

[0002] A flashlight is a small lighting device that integrates a light source and a power source and is housed in a shell. It is small in size, easy to hold and carry, and is widely used in daily life, work, outdoor sports and other fields.

[0003] Currently, common flashlights include a lamp holder, a barrel connected to the rear end of the lamp holder, and a power supply component housed in the barrel; further, the lamp holder usually includes a lamp holder shell, a light-emitting component housed in the lamp holder shell, and a front cover arranged on the light-emitting side of the light-emitting component and connected to the lamp holder shell.

[0004] However, existing flashlights lack designs that can effectively prevent collisions, prevent water and dissipate heat, which makes the flashlights: when used on the move, they are prone to internal or surface damage due to collisions or falls; when used in rainy days or humid environments, rain or moisture can easily penetrate into the flashlight and cause corrosion to the electrical structure or other metal devices; during long-term use, the electrical structure inside it generates a lot of heat, and the heat accumulated inside the flashlight will also affect its normal performance. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a lamp holder and a flashlight, aiming to solve the problem of how to enhance the anti-collision and waterproof effects of the lamp holder and promote the heat dissipation of the lamp holder to enhance its durability.

[0006] To achieve the above purpose, the technical solution adopted in this application is:

[0007] In one aspect, a lamp holder is provided, comprising:

[0008] The front cover comprises a cover body and a lens integrally formed on the cover body; the cover body is provided with a sleeve hole, the lens is received in the sleeve hole, and the peripheral side wall of the lens abuts against the hole wall of the sleeve hole along the radial direction of the lens;

[0009] A lamp holder shell having a mounting cavity; the lamp holder shell is connected to the cover body and partially extends into the sleeve hole so that the lens covers the cavity opening of the mounting cavity;

[0010] A light emitting component is disposed at the bottom of the mounting cavity and projects light toward the lens and generates heat in a conductive state; and

[0011] The heat dissipation component is received in the mounting cavity and is connected to the light emitting component and the lamp holder shell to transfer the heat of the light emitting component to the lamp holder shell.

[0012] In some embodiments, the hardness of the cover body is greater than the hardness of the lamp holder shell.

[0013] In some embodiments, the cover body is made of metal material, the lens is made of plastic, and the lens is injection molded into the cover body.

[0014] In some embodiments, a limiting groove is provided on the wall of the sleeve hole, and the limiting groove extends along the circumference of the sleeve hole and is arranged in a ring shape; the peripheral edge of the lens extends into the limiting groove, and the peripheral side wall of the lens abuts against the groove wall of the limiting groove.

[0015] In some embodiments, the light-emitting component includes a lamp bead and a first circuit board, and the heat dissipation component includes a first heat spreader and a second heat spreader; the first circuit board is provided with a through heat conduction hole, and the lamp bead is electrically installed on the first circuit board and partially covers the heat conduction hole; the first heat spreader is adhered to a side surface of the first circuit board provided with the lamp bead, and is provided with a first avoidance hole to allow the lamp bead to be exposed through the first avoidance hole; the second heat spreader is adhered to a side surface of the first circuit board facing away from the lamp bead, and is provided with a heat conduction protrusion; the heat conduction protrusion passes through the heat conduction hole and abuts against the lamp bead; the side surface of the second heat spreader facing away from the first circuit board is adhered to the bottom of the installation cavity.

[0016] In some embodiments, the second vapor chamber is further provided with a plurality of positioning protrusions, and corresponding positions of the first circuit board are provided with positioning holes, and the positioning protrusions are inserted into the corresponding positioning holes;

[0017] And / or, a plurality of through mounting holes are spaced apart on the first circuit board, first connecting holes are provided at corresponding positions of the first heat spreader, second connecting holes are provided at corresponding positions of the second heat spreader, and threaded holes are provided at corresponding positions of the bottom of the mounting cavity; bolts are sequentially passed through the first connecting hole, the mounting hole and the second connecting hole, and are threadedly connected to the threaded holes.

[0018] In some embodiments, the lamp holder also includes a reflector accommodated in the installation cavity, the reflector has a reflective cavity, the cavity opening of the reflective cavity is oriented in the same direction as the cavity opening of the installation cavity, and a through second avoidance hole is provided at the bottom of the reflective cavity to allow the lamp bead to at least partially extend into the reflective cavity through the avoidance hole; the cavity wall of the installation cavity is at least partially arranged to fit the outer wall of the reflector to absorb heat from the reflector.

[0019] In some embodiments, the lamp holder also includes a first sealing ring, and a sealing groove is provided on the side wall of the lamp holder shell, and the sealing groove extends along the circumference of the lamp holder shell and is arranged in a ring shape, and the first sealing ring is accommodated in the sealing groove; a clamping portion adapted to the sealing groove is provided on the upper portion of the cover body, and the clamping portion is located at the opening of the sleeve hole facing the side of the lamp holder shell; the clamping portion at least partially extends into the sealing groove and squeezes the first sealing ring to cause the first sealing ring to produce elastic deformation.

[0020] On the other hand, a flashlight is provided, comprising the lamp holder, wherein a connecting cavity communicating with the mounting cavity is provided at one end of the lamp holder shell away from the front cover, a second sealing ring is provided in the connecting cavity, and the flashlight further comprises:

[0021] The barrel body has a through accommodating cavity; one end of the barrel body is inserted into the connecting cavity and squeezes the second sealing ring together with the lamp holder shell;

[0022] a power supply component, received in the accommodating cavity and electrically connected to the light emitting component to supply power to the light emitting component; and

[0023] The rear cover is arranged at one end of the barrel body away from the lamp holder shell.

[0024] In some embodiments, the power supply component includes a second circuit board, a power connector and a battery electrically connected to the second circuit board, the battery is also electrically connected to the light-emitting component to supply power to the light-emitting component, a socket is provided on the second circuit board, and a through power connection hole is provided on the back cover; one end of the power connector is electrically connected to the socket, and the other end is exposed through the power connection hole to connect to an external power source and charge the battery.

[0025] The beneficial effects of the present application are as follows: in the lamp holder provided by the present application, the lens of the front cover and the cover body are integrally formed, and the peripheral side wall of the lens abuts against the hole wall of the socket hole along its radial direction, so the two can be connected in a relatively tight manner, thereby obtaining stronger sealing and anti-fall properties. The lamp holder shell partially extends into the socket hole, and the lens covers the cavity opening of the mounting cavity, which helps to further enhance the sealing of the lamp holder. The light-emitting component and the heat-dissipating component are accommodated in the mounting cavity and are encapsulated by the front cover. The heat-dissipating component simultaneously connects the light-emitting component and the lamp holder shell, thereby helping to transfer the heat of the light-emitting component to the lamp holder shell for release to the outside. In summary, the present application solves the technical problem of how to enhance the anti-collision and waterproof effects of the lamp holder, and promote heat dissipation of the lamp holder to enhance its durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or exemplary technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A cross-sectional view of a lamp holder provided in one embodiment of the present application;

[0028] Figure 2 A cross-sectional view of a lamp holder provided in another embodiment of the present application;

[0029] Figure 3 for Figure 1 A partial enlarged view of the middle A;

[0030] Figure 4 for Figure 1 A partial enlarged view of point B in the middle;

[0031] Figure 5 for Figure 2 A partial enlarged view of point C in the middle;

[0032] Figure 6 for Figure 2 A partial enlarged view of point D in the middle;

[0033] Figure 7 An exploded view of a portion of the structure of a lamp cap provided in one embodiment of the present application;

[0034] Figure 8 A schematic diagram of the relative positions of the light emitting component and the heat dissipation component provided in this application;

[0035] Fig. 9 A three-dimensional structural diagram of a flashlight provided in one embodiment of the present application;

[0036] Fig.10 for Fig. 9 An exploded view of a portion of the structure of the flashlight shown;

[0037] Fig.11 for Fig.10 A partial enlarged view of point E in the middle.

[0038] Among them, the reference numerals in the figure are:

[0039] 100, lamp holder; 10, front cover; 11, cover body; 111, sleeve hole; 112, limiting groove; 1121, first groove wall; 1122, second groove wall; 113, clamping part; 114, limiting protrusion; 115, clamping groove; 12, lens; 121, matching groove; 122, matching part; 20, lamp holder shell; 21, installation cavity; 22, sealing groove; 23, connecting cavity; 24, heat dissipation blade; 25, heat dissipation gap; 30, light-emitting component; 31, first circuit board; 311, heat conduction hole; 312, positioning hole; 313, installation hole; 314, heat dissipation hole; 32, lamp bead; 4 0. Heat dissipation component; 41. First heat spreader; 411. First avoidance hole; 412. First connection hole; 42. Second heat spreader; 421. Heat-conducting protrusion; 422. Positioning protrusion; 423. Second connection hole; 50. Reflector; 51. Reflection cavity; 52. Second avoidance hole; 60. First sealing ring; 200. Flashlight; 70. Body; 71. Second sealing ring; 72. Third sealing ring; 80. Power supply component; 81. Second circuit board; 811. Socket; 82. Power connection piece; 821. Hook; 83. Third circuit board; 90. Back cover; 91. Power connection hole; 92. Rope threading hole. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present application.

[0041] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first" and "second" are only used for the purpose of convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0042] See also Figure 1 and Figure 2 An embodiment of the present application provides a lamp holder 100 , including a front cover 10 , a lamp holder shell 20 , a light emitting component 30 and a heat dissipation component 40 .

[0043] The front cover 10 includes a cover body 11 and a lens 12 integrally formed with the cover body 11; the cover body 11 is provided with a sleeve hole 111, the lens 12 is received in the sleeve hole 111, and the peripheral side wall of the lens 12 abuts against the hole wall of the sleeve hole 111 along the radial direction of the lens 12; wherein the lens 12 is made of a light-transmitting material for light to pass through, and it can be a flat lens or a curved lens with a certain curvature. The lamp holder shell 20 has an installation cavity 21, and the lamp holder shell 20 is connected to the cover body 11, and partially extends into the sleeve hole 111 so that the lens 12 covers the cavity opening of the installation cavity 21; specifically, an external thread can be provided on the side wall of the lamp holder shell 20, and an internal thread adapted to the aforementioned external thread can be provided on the hole wall of the sleeve hole 111, and the lamp holder shell 20 is threadedly connected to the cover body 11; wherein the lamp holder shell 20 and the cover body 11 can also be connected in other ways, so long as the lens 12 covers the cavity opening of the installation cavity 21. The light emitting assembly 30 is disposed at the bottom of the mounting cavity 21 and projects light toward the lens 12 and generates heat in a conductive state. The heat dissipation assembly 40 is received in the mounting cavity 21 and connects the light emitting assembly 30 and the lamp holder shell 20 to transfer the heat of the light emitting assembly 30 to the lamp holder shell 20.

[0044] It can be understood that in the present embodiment, the lens 12 of the front cover 10 and the cover body 11 are integrally formed, and the peripheral side wall of the lens 12 abuts against the hole wall of the socket hole 111 along its radial direction, so the two can be connected in a relatively tight manner, thereby obtaining a stronger sealing and anti-fall property. The lamp holder shell 20 partially extends into the socket hole 111, and the lens 12 covers the cavity opening of the mounting cavity 21, which helps to further enhance the sealing of the lamp holder 100. The light-emitting component 30 and the heat-dissipating component 40 are accommodated in the mounting cavity 21 and are encapsulated by the front cover 10. The heat-dissipating component 40 simultaneously connects the light-emitting component 30 and the lamp holder shell 20, thereby helping to transfer the heat of the light-emitting component 30 to the lamp holder shell 20 for release to the outside. In summary, the present application solves the technical problem of how to enhance the anti-collision and waterproof effects of the lamp holder 100, and promote the heat dissipation of the lamp holder 100 to enhance its durability.

[0045] Optionally, in some embodiments, the hardness of the cover body 11 is greater than the hardness of the lamp holder shell 20. It is understandable that the cover body 11 is located at the end edge of the lamp holder 100. When the lamp holder 100 falls, the impact force received by the cover body 11 is generally greater than the impact force received by the lamp holder shell 20. Therefore, increasing the hardness of the cover body 11 helps prevent it from being deformed or broken under the impact force, thereby helping to enhance the anti-fall effect of the lamp holder 100 to improve its durability.

[0046] Optionally, in some embodiments, the cover body 11 is made of stainless steel, and the lamp holder shell 20 is made of aluminum. It is understandable that, on the one hand, the stainless steel material has a relatively large hardness, and as mentioned above, it can enhance the anti-fall effect of the lamp holder 100; on the other hand, the light emitting assembly 30 is arranged in the lamp holder shell 20, which generates heat during operation, and the aluminum material has a good thermal conductivity, which helps to conduct the heat to the outside.

[0047] Optionally, in some embodiments, the cover body 11 is made of metal material, the lens 12 is made of plastic, and the lens 12 is injection molded in the cover body 11. Specifically, the lens 12 and the cover body 11 can be integrally formed in the following manner: the processed cover body 11 is placed in an injection molding machine, and molten plastic is injected into the corresponding cavity in the socket hole 111 by the injection molding machine. After the molten plastic is cooled, the lens 12 can be formed and integrated with the cover body 11. It can be understood that plastic has strong light transmittance and thermoplasticity, which can allow light to penetrate to realize the lighting function of the lamp head 100, and can also be integrally formed with the cover body 11 by melt injection molding. The processing method is relatively simple, and the molded lens 12 and the cover body 11 are tightly connected, so that the front cover 10 and the lamp head 100 with the front cover 10 have strong sealing and drop resistance.

[0048] See also Figure 1 and Figure 2 Optionally, in some embodiments, a limiting groove 112 is provided on the wall of the sleeve hole 111, and the limiting groove 112 extends along the circumference of the sleeve hole 111 and is arranged in an annular shape; the periphery of the lens 12 extends into the limiting groove 112, and the peripheral side wall of the lens 12 abuts against the groove wall of the limiting groove 112. For ease of understanding, taking the lens 12 made of plastic as an example, during the molding process of the lens 12, the molten plastic flows into the limiting groove 112 and fills the limiting groove 112. After the molten plastic cools, a protrusion of a corresponding shape is formed in the limiting groove 112 to limit each other with the cover body 11, thereby helping to prevent the lens 12 and the cover body 11 from relative movement during use or when impacted, so as to ensure the sealing and drop resistance of the lamp head 100.

[0049] See also Figure 1 and Figure 3 Optionally, in these embodiments, the groove wall of the limiting groove 112 is provided with a limiting protrusion 114, and the corresponding wall surface of the lens 12 is formed with a matching groove 121 adapted to the limiting protrusion 114, and the limiting protrusion 114 is received in the matching groove 121 to limit the movement of the lens 12 relative to the cover body 11. The limiting protrusion 114 and the matching groove 121 can be provided in one group or multiple groups at intervals to limit the cover body 11 and the lens 12, thereby enhancing the stability of the connection between the two.

[0050] See also Figure 1 and Figure 3 Optionally, the limiting protrusion 114 is annularly arranged; correspondingly, the matching groove 121 is annularly arranged. It can be understood that the annular limiting protrusion 114 helps to provide a uniform limiting effect on the circumference of the lens 12, helping to prevent the lens 12 from tilting at any angle.

[0051] See also Figure 3 and Figure 5 The groove body of the limiting groove 112 includes a first groove wall 1121 extending along the axial direction of the sleeve hole 111 and a second groove wall 1122 extending along the radial direction of the sleeve hole 111 .

[0052] Optionally, see Figure 3 The limiting protrusion 114 is arranged on the first groove wall 1121 to limit the axial movement of the lens 12 along the cover body 11; or, the limiting protrusion 114 is arranged on any second groove wall 1122 to limit the radial movement of the lens 12 along the cover body 11; or, the limiting protrusion 114 is arranged at the angle formed between the first groove wall 1121 and any second groove wall 1122 to simultaneously limit the axial and radial movements of the lens 12 along the cover body 11.

[0053] See also Figure 2 and Figure 5 Optionally, in some embodiments, a snap-fit ​​groove 115 is provided in the limiting groove 112, and a corresponding wall surface of the lens 12 is convex and formed with a matching portion 122, and the matching portion 122 is received in the snap-fit ​​groove 115 to limit the movement of the lens 12 relative to the cover body 11. The snap-fit ​​groove 115 and the matching portion 122 can be provided in one group or multiple groups at intervals to limit the cover body 11 and the lens 12, thereby enhancing the stability of the connection between the two.

[0054] See also Figure 2 and Figure 5 Optionally, the snap-fit ​​groove 115 extends along the circumference of the limiting groove 112 and is arranged in an annular shape; accordingly, the matching portion 122 is arranged in an annular shape. It can be understood that the annular snap-fit ​​groove 115 helps to provide a uniform limiting effect on all parts of the circumference of the lens 12, helping to prevent the lens 12 from tilting at any angle.

[0055] Optionally, the snap-in groove 115 is formed in the first groove wall 1121 to limit the axial movement of the lens 12 along the cover body 11; or, the snap-in groove 115 is formed in any second groove wall 1122 to limit the radial movement of the lens 12 along the cover body 11; or, refer to Figure 5 The engaging groove 115 is provided at an angle formed between the first groove wall 1121 and any second groove wall 1122 to simultaneously limit the movement of the lens 12 along the axial direction and radial direction of the cover body 11 .

[0056] See also Figure 1 , Figure 2 , Figure 7 and Figure 8 Optionally, in some embodiments, the light-emitting component 30 includes a lamp bead 32 and a first circuit board 31, and the heat dissipation component 40 includes a first heat spreader 41 and a second heat spreader 42; the first circuit board 31 is provided with a through heat conduction hole 311, and the lamp bead 32 is electrically installed on the first circuit board 31 and at least partially covers the heat conduction hole 311; the first heat spreader 41 is attached to a side surface of the first circuit board 31 on which the lamp bead 32 is provided, and is provided with a first avoidance hole 411 to allow the lamp bead 32 to be exposed through the first avoidance hole 411; the second heat spreader 42 is attached to a side surface of the first circuit board 31 away from the lamp bead 32, and is provided with a heat conduction protrusion 421; the heat conduction protrusion 421 passes through the heat conduction hole 311 and abuts against the lamp bead 32; the side surface of the second heat spreader 42 away from the first circuit board 31 is attached to the bottom of the installation cavity 21. Among them, the first circuit board 31 can be connected to the power supply device to supply power to the lamp bead 32. The lamp bead 32 can project a light beam toward the lens 12 in a conductive state to realize the lighting function of the lamp head 100; the lamp bead 32 can partially cover the opening of the heat conducting hole 311, or completely cover the opening of the heat conducting hole 311, so that the heat conducting protrusion 421 can abut against the lamp bead 32. It is understandable that the lamp bead 32 and the first circuit board 31 are prone to generate a large amount of heat during operation. In these embodiments, the first heat spreader 41 and the second heat spreader 42 are respectively attached to the two side surfaces of the first circuit board 31, and can effectively absorb the heat generated by the first circuit board 31; the lamp bead 32 is exposed to the first circuit board 31 through the heat conduction hole 311, so that the heat can be discharged through the heat conduction hole 311; and the heat conduction protrusion 421 passes through the heat conduction hole 311 and abuts against the lamp bead 32, so as to absorb the heat generated by the lamp bead 32 and further promote the heat dissipation of the lamp bead 32; the first heat spreader 41 and the second heat spreader 42 transfer the heat absorbed by each other to the outside of the lamp holder 100 through the lamp holder shell 20, thereby helping to promote the heat dissipation of the lamp holder 100 and enhance the durability of the lamp holder 100.

[0057] See also Figure 8 Optionally, in some embodiments, a plurality of positioning protrusions 422 are further provided on the second heat spreader 42, and positioning holes 312 are provided at corresponding positions of the first circuit board 31, and the positioning protrusions 422 are inserted into the corresponding positioning holes 312. It can be understood that the positioning protrusions 422 are inserted into the corresponding positioning holes 312, so that the second heat spreader 42 is riveted to one side surface of the first circuit board 31 and fits the first circuit board 31; on the one hand, it helps to fully absorb the heat generated by the first circuit board 31; on the other hand, it also helps to enhance the stability of the connection between the two, so as to avoid the two from being separated from each other under collision or other external forces, thereby enhancing the anti-fall effect of the lamp holder 100.

[0058] See also Figure 8 Optionally, a plurality of through mounting holes 313 are provided at intervals on the first circuit board 31, first connection holes 412 are provided at corresponding positions of the first heat spreader 41, and second connection holes 423 are provided at corresponding positions of the second heat spreader 42; threaded holes are provided at corresponding positions of the bottom of the mounting cavity 21; bolts pass through the first connection holes 412, the mounting holes 313, and the second connection holes 423 in sequence, and are threadedly connected to the threaded holes. It can be understood that in these embodiments, the first heat spreader 41, the first circuit board 31, and the second heat spreader 42 can be fixed in the mounting cavity 21 by a plurality of bolts, which helps to improve the reliability of the connection between the aforementioned components, and prevents the aforementioned components from being separated from each other under the action of external impact force while promoting the heat dissipation of the lamp holder 100. Optionally, there are four mounting holes 313, all of which are located at the edge of the first circuit board 31, and the centers of the four mounting holes 313 are arranged at equal intervals along the circumference of the first circuit board 31; the first connection holes 412, the second connection holes 423 and the threaded holes are arranged in corresponding numbers and at corresponding positions. It can be understood that the uniform arrangement of the four mounting holes 313 helps to make the first circuit board 31, the first heat spreader 41 and the second heat spreader 42 receive uniform locking force from the bolts, thereby preventing any of the first heat spreader 41, the second heat spreader 42 and the first circuit board 31 from being partially separated from the bottom of the mounting cavity 21.

[0059] See also Figure 8 Optionally, in some embodiments, the first circuit board 31 is further provided with a heat dissipation hole 314. The cross section of the heat dissipation hole 314 may be circular, elliptical or other shapes; one heat dissipation hole 314 may be provided or multiple heat dissipation holes 314 may be provided at intervals; the shapes of the heat dissipation holes 314 may be the same or different. It is understood that the heat dissipation holes 314 help to further promote the heat dissipation of the first circuit board 31 and the electronic devices thereon.

[0060] Optionally, in some embodiments, the first vapor chamber 41 and / or the second vapor chamber 42 are made of copper. It is understood that copper has good thermal conductivity, which helps to conduct heat away from the first circuit board 31 and the lamp beads 32.

[0061] See also Figure 1 , Figure 2 and Figure 7 Optionally, in some embodiments, the lamp holder 100 further includes a reflector 50 received in the installation cavity 21, the reflector 50 has a reflection cavity 51, the cavity opening of the reflection cavity 51 is in the same direction as the cavity opening of the installation cavity 21, and a through second avoidance hole 52 is provided at the bottom of the reflection cavity 51 so that the lamp bead 32 at least partially extends into the reflection cavity 51 through the avoidance hole. The inner wall of the reflection cavity 51 can be used to reflect light, so that the light emitted by the light emitting component 30 can converge toward the direction of the lens 12. Please refer to Figure 1 Optionally, in some embodiments, the inner wall of the installation cavity 21 is arranged in a smooth arc shape; or, see Figure 2 The cavity wall of the installation cavity 21 is at least partially arranged to fit the outer wall of the reflector 50 to absorb heat from the reflector 50. It is understandable that Figure 1 The lamp cap shell 20 shown is easier to process and can be formed in one step using a disc-shaped tool; Figure 2 The lamp holder shell 20 shown, since the inner wall portion of the mounting cavity 21 is in contact with the reflector 50 , helps to absorb the heat of the reflector 50 , thereby promoting the heat dissipation of the internal structure of the lamp holder shell 20 .

[0062] See also Figure 1 , Figure 2 and Figure 7 Optionally, in some embodiments, a plurality of heat dissipation blades 24 are arranged at intervals on the outer wall of the lamp holder shell 20, and a heat dissipation gap 25 is formed between any two adjacent heat dissipation blades 24. It can be understood that any heat dissipation blade 24 can absorb the heat of the lamp holder shell 20 and release the heat to the outside, and any heat dissipation gap 25 can allow external air to flow to assist the lamp holder shell 20 in releasing heat.

[0063] See also Figure 1 and Figure 2 Optionally, in some embodiments, the lamp holder 100 further includes a first sealing ring 60 with elastic restoring force, a sealing groove 22 is provided on the side wall of the lamp holder shell 20, the sealing groove 22 extends along the circumference of the lamp holder shell 20 and is arranged in an annular shape, and the first sealing ring 60 is accommodated in the sealing groove 22; an annular clamping portion 113 is provided on the cover body 11, and the clamping portion 113 is located at the opening of the sleeve hole 111 facing the lamp holder shell 20; the clamping portion 113 at least partially extends into the sealing groove 22 and squeezes the first sealing ring 60 to make the first sealing ring 60 elastically deformed. Among them, the first sealing ring 60 has elastic restoring force, and it can be made of rubber, sealant or other materials with good sealing performance. It can be understood that the first sealing ring 60 is elastically deformed under the extrusion of the lamp holder shell 20 and the cover body 11, and applies reaction force to the lamp holder shell 20 and the cover body 11 respectively, so as to block the connection gap between the lamp holder shell 20 and the cover body 11 to improve the sealing performance of the lamp holder 100.

[0064] See also Figure 1 and Figure 4 Optionally, in some implementations, the width of the sealing groove 22 is adapted to the width of the clamping portion 113, that is, the width of the sealing groove 22 is equal to or slightly larger than the width of the clamping portion 113. It can be understood that in these embodiments, while the sealing performance of the lamp holder 100 is improved by the first sealing ring 60, the reliability of the connection between the cover body 11 and the lamp holder shell 20 can also be enhanced.

[0065] See also Figures 9 to 11 The present invention also provides a flashlight 200, which includes the aforementioned lamp holder 100. The specific structure of the lamp holder 100 refers to the above-mentioned embodiment. Since the flashlight 200 adopts all the technical solutions of all the above-mentioned embodiments, it also has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Further, the end of the lamp holder shell 20 away from the front cover 10 is provided with a connecting cavity 23 connected to the installation cavity 21, and a second sealing ring 71 is arranged in the connecting cavity 23. In addition, the flashlight 200 also includes a barrel 70, a rear cover 90 and a power supply component 80. Specifically, the barrel 70 has a through accommodating cavity, and one end of the barrel 70 is arranged in the connecting cavity 23 and squeezes the second sealing ring 71 together with the lamp holder shell 20; the power supply component 80 is accommodated in the accommodating cavity and is electrically connected to the light-emitting component 30 to supply power to the light-emitting component 30; the rear cover 90 is arranged at the end of the barrel 70 away from the lamp holder shell 20 to encapsulate the accommodating cavity and the components inside the accommodating cavity. The two through-hole accommodating cavities are connected to the mounting cavity 21, so that the power supply component 80 can be electrically connected to the light-emitting component 30 in the mounting cavity 21 to supply power to the light-emitting component 30, thereby realizing the lighting function of the flashlight 200. It can be understood that the second sealing ring 71 is elastically deformed under the pressure of the lamp holder shell 20 and the barrel 70, thereby applying a reaction force to the lamp holder shell 20 and the barrel 70 to block the gap between the two, thereby helping to improve the sealing of the flashlight 200. Optionally, please refer to Figure 1 and Figure 2 The bottom of the first connecting groove is provided with an annular groove, and the second sealing ring 71 is received in the annular groove; wherein, the annular groove may also be provided in the groove wall of the first connecting groove.

[0066] Optionally, a threaded hole is formed on the barrel body 70, and a through hole or a threaded hole is formed on a corresponding portion of the lamp holder shell 20, and the barrel body 70 and the lamp holder shell 20 are fastened and connected by bolt threads.

[0067] See also Figures 9 to 11Optionally, in some embodiments, the power supply component 80 includes a second circuit board 81, a power connector 82 and a battery electrically connected to the second circuit board 81, and the battery is also electrically connected to the light-emitting component 30 to supply power to the light-emitting component 30. The second circuit board 81 is provided with a socket 811, and the back cover 90 is provided with a through power connection hole 91; one end of the power connector 82 is electrically connected to the socket 811, and the other end is exposed through the power connection hole 91 to connect to an external power source and charge the battery. It can be understood that the power connector 82 is connected to the second circuit board 81, which helps to improve the reliability of the connection between the two, thereby enhancing the anti-fall function of the flashlight 200. Optionally, in some embodiments, the first circuit board 31 is electrically connected to the battery through a wire; wherein a welding point is provided on the first circuit board 31 to weld the wire, and the first heat spreader 41 is provided with a through hole or a through groove at a position corresponding to the welding point to allow the wire to pass through. Optionally, in some embodiments, the power supply assembly 80 further includes a third circuit board 83 spaced apart from and arranged in parallel with the second circuit board 81 ; the battery is clamped between the second circuit board 81 and the third circuit board 83 and is electrically connected to both.

[0068] See also Fig.11 Optionally, in some embodiments, a hook 821 is provided at the corresponding end of the power receiving member 82, and the hook 821 is hooked in the corresponding socket 811. It can be understood that the hook 821 hooked in the corresponding socket 811 can stably connect the power receiving member 82 and the second circuit board 81, thereby preventing the power receiving member 82 and the second circuit board 81 from falling off when the flashlight 200 falls.

[0069] See also Fig.10 Optionally, in some embodiments, the flashlight 200 further includes a third sealing ring 72 disposed between corresponding walls of the barrel 70 and the rear cover 90; the third sealing ring 72 is elastically deformed under the extrusion of the barrel 70 and the rear cover 90, and applies a reaction force to the two to block the gap therebetween, thereby enhancing the sealing of the flashlight 200.

[0070] See also Fig. 9 Optionally, in some embodiments, the back cover 90 is further provided with a rope hole 92. It is understandable that the rope hole 92 can be used to pass a rope-like structure or a belt-like structure such as a hand rope, so that the flashlight 200 can be placed on the wrist or other appropriate positions; while increasing the portability of the flashlight 200, it also helps to prevent it from falling.

[0071] The above are only optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A lamp holder (100), characterized in that: include: The front cover (10) comprises a cover body (11) and a lens (12) integrally formed on the cover body (11); the cover body (11) is provided with a sleeve hole (111), the lens (12) is received in the sleeve hole (111), and the peripheral side wall of the lens (12) abuts against the hole wall of the sleeve hole (111) along the radial direction of the lens (12); A lamp holder shell (20) having a mounting cavity (21); the lamp holder shell (20) is connected to the cover body (11) and partially extends into the sleeve hole (111) so that the lens (12) covers the cavity opening of the mounting cavity (21); A light-emitting component (30) is disposed at the bottom of the mounting cavity (21) and projects light toward the lens (12) and generates heat in a conductive state; and A heat dissipation component (40) is accommodated in the mounting cavity (21) and is connected to the light-emitting component (30) and the lamp holder shell (20) so as to transfer heat from the light-emitting component (30) to the lamp holder shell (20); A limiting groove (112) is provided on the wall of the sleeve hole (111), and the limiting groove (112) extends along the circumference of the sleeve hole (111) and is arranged in an annular shape; the peripheral edge of the lens (12) extends into the limiting groove (112), and the peripheral side wall of the lens (12) abuts against the groove wall of the limiting groove (112); The light-emitting component (30) comprises a lamp bead (32) and a first circuit board (31); the heat dissipation component (40) comprises a first heat spreader (41) and a second heat spreader (42); the first circuit board (31) is provided with a through heat conduction hole (311); the lamp bead (32) is electrically mounted on the first circuit board (31) and at least partially covers the heat conduction hole (311); the first heat spreader (41) is attached to a side surface of the first circuit board (31) provided with the lamp bead (32), and is provided with a A first avoidance hole (411) is provided to allow the lamp bead (32) to be exposed through the first avoidance hole (411); the second heat spreader (42) is fitted and connected to a side surface of the first circuit board (31) that is away from the lamp bead (32), and is provided with a heat conduction protrusion (421); the heat conduction protrusion (421) passes through the heat conduction hole (311) and abuts against the lamp bead (32); a side surface of the second heat spreader (42) that is away from the first circuit board (31) is fitted and connected to the bottom of the installation cavity (21); The second heat spreader (42) is also provided with a plurality of positioning protrusions (422), and corresponding positions of the first circuit board (31) are provided with positioning holes (312), and the positioning protrusions (422) are inserted into the corresponding positioning holes (312); And / or, a plurality of through mounting holes (313) are spaced apart on the first circuit board (31), first connection holes (412) are provided at corresponding positions of the first heat spreader (41), second connection holes (423) are provided at corresponding positions of the second heat spreader (42), and threaded holes are provided at corresponding positions of the bottom of the mounting cavity (21); bolts are sequentially passed through the first connection holes (412), the mounting holes (313), and the second connection holes (423), and are threadedly connected to the threaded holes; The lamp holder (100) further comprises a reflector (50) accommodated in the installation cavity (21), the reflector (50) comprising a reflective cavity (51), the cavity opening of the reflective cavity (51) and the cavity opening of the installation cavity (21) being oriented in the same direction, and a through second avoidance hole (52) is provided at the cavity bottom of the reflective cavity (51) so that the lamp bead (32) at least partially extends into the reflective cavity (51) through the second avoidance hole; the cavity wall of the installation cavity (21) is at least partially arranged to fit the outer wall of the reflector (50) so as to absorb heat from the reflector (50).

2. The lamp holder (100) according to claim 1, characterized in that: The hardness of the cover body (11) is greater than the hardness of the lamp holder shell (20).

3. The lamp cap (100) according to claim 1, characterized in that: The cover body (11) is made of metal material, the lens (12) is made of plastic, and the lens (12) is injection-molded into the cover body (11).

4. The lamp holder (100) according to any one of claims 1 to 3, characterized in that: The lamp holder (100) further comprises a first sealing ring (60); a sealing groove (22) is provided on the side wall of the lamp holder shell (20); the sealing groove (22) extends along the circumference of the lamp holder shell (20) and is arranged in an annular shape; the first sealing ring (60) is accommodated in the sealing groove (22); a clamping portion (113) adapted to the sealing groove (22) is provided on the cover body (11); the clamping portion (113) is located at the opening of the sleeve hole (111) on the side facing the lamp holder shell (20); the clamping portion (113) at least partially extends into the sealing groove (22) and squeezes the first sealing ring (60) so that the first sealing ring (60) generates elastic deformation.

5. A flashlight (200), characterized in that: The flashlight (200) comprises a lamp holder (100) as claimed in any one of claims 1 to 4, wherein an end of the lamp holder shell (20) facing away from the front cover (10) is provided with a connecting cavity (23) connected to the installation cavity (21), and a second sealing ring (71) is arranged in the connecting cavity (23); the flashlight (200) further comprises: The barrel (70) has a through accommodating cavity; one end of the barrel (70) is inserted into the connecting cavity (23) and together with the lamp holder shell (20) squeezes the second sealing ring (71); a power supply component (80) received in the accommodating cavity and electrically connected to the light emitting component (30) to supply power to the light emitting component (30); and A rear cover (90) is arranged at an end of the barrel (70) facing away from the lamp holder shell (20).

6. The flashlight (200) according to claim 5, characterized in that: The power supply component (80) comprises a second circuit board (81), a power connection piece (82), and a battery electrically connected to the second circuit board (81); the battery is also electrically connected to the light-emitting component (30) to supply power to the light-emitting component (30); a socket (811) is provided on the second circuit board (81); and a through power connection hole (91) is provided on the back cover (90); one end of the power connection piece (82) is electrically snapped into the socket (811), and the other end is exposed through the power connection hole (91) to connect to an external power source and charge the battery.

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