Lamp and lighting system

Abstract

The utility model provides a lamp and lighting system, the lamp comprises a lamp body unit and a face ring, the lamp body unit comprises a connecting lamp body and a heat dissipation lamp body, the connecting lamp body is rotatably connected with the heat dissipation lamp body, the face ring is detachably sleeved on the connecting lamp body, the connecting lamp body is provided with a hand clasping part, and the hand clasping part extends into the connecting lamp body from the inner wall of the connecting lamp body; in the height direction of the face ring, the hand buckling part is located between the heat dissipation lamp body and the bottom of the face ring. The lighting system is provided with the lamp, the lamp is simple in structure, and the lamp body unit can be conveniently detached relative to the face ring.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, in particular to a lamp and a lighting system provided with the lamp. Background Art

[0002] An existing type of lamp includes a lamp body unit, a face ring and a front ring, wherein the lamp body unit is connected to the face ring, and the front ring is mounted on the face ring and located at the front end of the light output of the lamp body unit to improve the light output effect of the lamp body unit, and the lamp can be mounted on an external component (such as a ceiling) through the face ring. Figure 1 As shown, it shows the existing first type of lamp 9, in which the connection between the lamp body unit 91 and the face ring 92 of the lamp 9 is a non-detachable connection, such as riveting the lamp body unit 91 and the face ring 92 into an integral structure, but this type of lamp has the disadvantage that maintenance remains unchanged, and when maintaining the lamp body unit 92, the lamp 9 needs to be removed and installed as a whole. As shown in the utility model patent with announcement number CN215335986U, it shows the second existing lamp, which has a pull ring on its lamp body unit. The pull ring can be completely stored in the lamp body unit or rotated relative to the lamp body unit so that part of itself is located outside the lamp body unit, wherein the lamp body unit and the face ring are detachably connected. When the lamp body unit needs to be maintained or replaced, the pull ring is rotated so that part of the pull ring is located outside the lamp body unit, and then the lamp body unit is pulled toward the front end of the lamp by the pull ring to separate the lamp body unit from the face ring. This lamp effectively overcomes the shortcomings of the first lamp mentioned above; however, the disadvantages of this lamp are that it is necessary to provide a connecting structure for connecting to the pull ring on the lamp body unit, and to provide a snap-fit ​​structure (such as a groove body) on the lamp body unit to store and fix the pull ring, which increases the number of parts of the lamp, the structural complexity, the assembly complexity and the production cost. Summary of the Invention

[0003] In order to solve the above problems, the main purpose of the present invention is to provide a lamp with a simple structure and convenient disassembly of the lamp body unit relative to the face ring.

[0004] Another object of the present invention is to provide a lighting system equipped with the above-mentioned lamp.

[0005] In order to achieve the main purpose of the utility model, the utility model provides a lamp, including a lamp body unit and a face ring, wherein the lamp body unit includes a connecting lamp body and a heat dissipation lamp body, the connecting lamp body and the heat dissipation lamp body are rotatably connected, the face ring is detachably mounted on the connecting lamp body, and the connecting lamp body is provided with a buckle portion, which extends from the inner wall of the connecting lamp body into the connecting lamp body; in the height direction of the face ring, the buckle portion is located between the heat dissipation lamp body and the bottom of the face ring.

[0006] As can be seen from the above, the buckle part provides a force point for the disassembly between the lamp body unit and the face ring. When the lamp body unit and the face ring need to be disassembled, the lamp body unit can be separated from the face ring by pulling the lamp body unit relative to the face ring toward the front end of the lamp through the buckle part; compared with the existing lamps with pull rings on the lamp body unit, the lamp provided by the utility model has a simpler structure.

[0007] A preferred solution is that the buckle handle and the connecting lamp body are integrally formed by an injection molding process.

[0008] As can be seen from the above, this design improves the firmness of the connection between the buckle handle and the lamp body, and while achieving the same disassembly function, it requires fewer parts, reduces assembly complexity and production costs.

[0009] A further solution is that there are two buckle parts, and the two buckle parts are distributed along the circumference of the lamp body.

[0010] As can be seen from the above, setting the number of buckle parts to two not only makes it easier to operate the lamp body unit and the face ring, but also simplifies the structure of the lamp body connection as much as possible, reducing the difficulty and cost of producing the lamp body connection.

[0011] Another preferred solution is that the connecting lamp body is provided with a first avoidance gap; the heat dissipation lamp body includes a radiator and a light guide ring, the radiator is mounted on the light guide ring and is located at one end of the light guide ring, the second end of the light guide ring is provided with a second avoidance gap, the first avoidance gap and the second avoidance gap are located on the same side of the rotation axis of the heat dissipation lamp body, and a light shield is provided on the outer periphery of the second end of the light guide ring, and the light shield surrounds the second avoidance gap; a connecting ear is provided on the light shield, which is rotatably connected to the connecting lamp body, and the light shield and the light guide ring are integrally formed by an injection molding process.

[0012] As can be seen from the above, the first avoidance gap is used to avoid the light guide ring so that the heat dissipation lamp body can rotate in a larger range relative to the connecting lamp body; the radiator is used to reliably dissipate heat for the light source module to ensure the stability and reliability of the operation of the light source module; the light guide ring is used to guide and gather the light of the light source module to ensure the lighting effect of the light source module, and the setting of the second avoidance gap on the light guide ring can make it possible for the light of the light source module to be reliably irradiated from the face ring without being blocked by the light guide ring when the axis of the heat dissipation lamp body is in a non-vertical state; the light shield can block the second avoidance gap to realize the shading function to avoid light leakage from the heat dissipation lamp body at the second avoidance gap, thereby ensuring the lighting effect of the lamp body unit.

[0013] A further solution is that an arc-shaped protrusion is provided at one end of the lamp body connected to the radiator, the axis of the arc-shaped protrusion is parallel to the rotation axis, the radiator is provided with an arc-shaped groove that cooperates with the arc-shaped protrusion, and the light guide ring is provided with a tooth groove at the arc-shaped groove; a first elastic arm is provided at the arc-shaped protrusion, and the movable end of the first elastic arm has a tooth portion, which engages with the tooth groove, or a first spring plunger is provided at the arc-shaped protrusion, and the positioning bead of the first spring plunger engages with the tooth groove.

[0014] As can be seen from the above, the design of the arc-shaped protrusion on the connecting lamp body and the arc-shaped groove on the heat sink is conducive to smooth and stable rotation between the connecting lamp body and the heat dissipation lamp body; and the design of the teeth or the first spring plunger at the arc-shaped protrusion and the teeth at the arc-shaped groove makes the adjustment feel and adjustment experience better when rotating and adjusting the connecting lamp body and the heat dissipation lamp body.

[0015] A further solution is that there are two arc-shaped protrusions, which are distributed along the rotation axis; there are two arc-shaped grooves, which correspond one-to-one to the two arc-shaped grooves; a first stop surface is provided on the connecting lamp body, and the rotation axis is located between the first stop surface and the first avoidance gap; a second stop surface is provided on the radiator to cooperate with the first stop surface, and the second stop surface can be rotated around the rotation axis until it contacts the first stop surface. When the first stop surface contacts the second stop surface, the axis of the light guide ring is parallel to the axis of the connecting lamp body.

[0016] As can be seen from the above, the number and position design of the arc-shaped protrusions and arc-shaped grooves can further improve the smoothness and stability of the relative rotation between the connected lamp body and the heat dissipation lamp body; and the design of the first stop surface on the rotating lamp body and the second stop surface on the heat sink can enable the lamp body unit to have an accurate vertical illumination position, meeting the user's vertical illumination requirements for the lamp.

[0017] A further solution is that the light shield has an avoidance groove near the buckle portion, and the avoidance groove is recessed from the outer side of the light shield to the inside of the light shield.

[0018] As can be seen from the above, this design makes it more convenient for the user to insert his fingers into the connecting lamp body to pull the buckle hand, and enables the user's fingers to better engage with the buckle hand to apply force to the buckle hand. At the same time, it can also shorten the distance that the buckle hand extends into the connecting lamp body, avoiding the buckle hand from blocking light or affecting the installation of the optical front ring.

[0019] Another preferred solution is that the lamp body is connected to the face ring with an interference fit; or one of the outer periphery of the lamp body and the inner periphery of the face ring is provided with a first groove body, and the other is provided with an inner spring piece, the inner spring piece has a bending structure, and the bending part of the inner spring piece is abutted into the first groove body; or one of the outer periphery of the lamp body and the inner periphery of the face ring is provided with a second groove body, and the other is provided with a second spring plunger, and the positioning bead of the second spring plunger is inserted into the second groove body; or the outer periphery of the lamp body is provided with a second elastic arm, the movable end of the second elastic arm has a spherical crown protrusion, and a third groove body is provided on the inner periphery of the face ring, and the spherical crown protrusion is inserted into the third groove body.

[0020] As can be seen from the above, the above designs can make the connection between the lamp body and the face ring convenient to assemble and disassemble and easy to operate.

[0021] A further solution is that the lamp also includes an optical front ring, which is detachably connected to the face ring or the lamp body; a spring is provided on the face ring, or an elastic fastener is provided on the face ring, and the bottom of the face ring has an eaves, and a clamping position is formed between the elastic fastener and the eaves.

[0022] As can be seen from the above, the optical front ring can improve the lighting effect of the lamp, and the optical front ring is detachably connected to the face ring or the lamp body, making it more convenient to remove the lamp body unit from the face ring.

[0023] In order to achieve another purpose of the present invention, the present invention provides a lighting system, including a control terminal, wherein the lighting system also includes the above-mentioned lamp; the control terminal is electrically connected to the lamp, and / or the control terminal and the lamp exchange information.

[0024] As can be seen from the above, the lighting system provided with the above-mentioned lamp is more convenient to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of an existing lamp with some components omitted.

[0026] Figure 2 This is a structural diagram of an embodiment of the lamp of the present invention from a first viewing angle.

[0027] Figure 3 This is a structural diagram of the lamp embodiment of the present invention from a second viewing angle.

[0028] Figure 4 It is a cross-sectional view of an embodiment of the lamp of the present invention.

[0029] Figure 5 This is a structural diagram of the lamp body connected to an embodiment of the lamp of the present invention.

[0030] Figure 6 It is a structural diagram of the heat dissipation lamp body of an embodiment of the utility model lamp.

[0031] Figure 7 This is a diagram of the assembly structure between the lamp body and the face ring of an embodiment of the lamp of the present utility model.

[0032] Figure 8 This is a diagram of the assembly structure between the lamp body unit and the face ring of an embodiment of the lamp of the present utility model.

[0033] Figure 9 This is an exploded view of the lamp body unit and the face ring of an embodiment of the lamp of the present invention.

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0035] Lamp Example

[0036] Reference Figures 2 to 4 The lamp 100 includes a lamp body unit 101, a face ring 102, an optical front ring 103, a light source module 104, and a lens 105. The lamp body unit 101 and the face ring 102 are detachably connected. When the lamp 100 is mounted on an external component (such as a ceiling), if the lamp body unit 101 needs to be maintained or replaced, the lamp body unit 101 can be removed from the face ring 102, making maintenance and replacement of the lamp body unit 101 more convenient and easier to operate. The optical front ring 103 is detachably connected to the lamp body unit 101 or the face ring 102. The light source module 104 and the lens 105 are both mounted within the lamp body unit 101.

[0037] The lamp body unit 101 includes a connecting lamp body 1 and a heat dissipation lamp body 2, and the connecting lamp body 1 and the heat dissipation lamp body 2 are rotatably connected. Figure 5 The connecting lamp body 1 is ring-shaped and is provided with a handle 11 extending from the inner wall of the connecting lamp body 1 into the connecting lamp body 1. Preferably, the extending direction of the handle 11 is parallel to the rotation axis of the heat dissipating lamp body 2. The handle 11 provides a force point for disassembling the lamp body unit 101 and the face ring 102. When the lamp body unit 101 and the face ring 102 need to be disassembled, the lamp body unit 101 and the face ring 102 can be separated by pulling the lamp body unit 101 relative to the face ring 102 toward the front end of the lamp 100 using the handle 11. Compared with existing lamps 100 that have a pull ring on the lamp body unit 101, the design of the handle 11 makes the structure of the connecting lamp body 1 simpler.

[0038] More preferably, there are two latches 11, distributed along the circumference of the lamp body 1. By setting the number of latches 11 to two, detaching the lamp body unit 101 from the face ring 102 becomes more convenient and easier to operate, and the structure of the lamp body 1 can be simplified as much as possible, thereby reducing the difficulty and cost of manufacturing the lamp body 1. Furthermore, the latches 11 and the lamp body 1 are preferably integrally formed through an injection molding process, thereby improving the secure connection between the latches 11 and the lamp body 1 while also reducing the number of required parts, assembly complexity, and production costs while achieving the same disassembly function.

[0039] Combine Figure 6 The heat dissipation lamp body 2 includes a heat sink 21 and a light guide ring 22. The heat sink 21 is mounted on the light guide ring 22 and is located at one end of the light guide ring 22. The light source module 104 and the lens 105 are both mounted between the heat sink 21 and the light guide ring 22, and the lens 105 is located between the light source module 104 and the second end of the light guide ring 22. The heat sink 21 is used to reliably dissipate heat from the light source module 104 to ensure the stability and reliability of the light source module 104. The light guide ring 22 is used to guide and focus the light from the light source module 104 to ensure the lighting effect of the light source module 104.

[0040] A second relief notch 221 is provided at the second end of the light guide ring 22. The provision of the second relief notch 221 ensures that, when the axis of the heat sink lamp body 2 is non-perpendicular (i.e., the angle between the axis of the heat sink lamp body 2 and the axis of the member connecting the lamp body 1 is obtuse), light from the light source module 104 can still reliably radiate from the face ring 102 without being blocked by the light guide ring 22. Furthermore, a light shield 222 is provided on the outer periphery of the second end of the light guide ring 22. The light shield 222 surrounds and covers the second relief notch 221, providing a light shielding function. This prevents light leakage from the heat sink lamp body 2 at the second relief notch 221, thereby ensuring the lighting effect of the lamp unit 101.

[0041] The light shield 222 is provided with a connecting ear 2221, which is rotatably connected to a rotating connection portion provided in the connecting lamp body 1, so that the heat dissipating lamp body 2 can rotate relative to the connecting lamp body 1. Preferably, the light shield 222 and the light guide ring 22 are integrally formed by an injection molding process. Furthermore, the light shield 222 is provided with an escape groove 2222 near each buckle portion 11, and the escape groove 2222 is recessed from the outer surface of the light shield 222 into the light shield 222. The escape groove 2222 on the light shield 222 makes it more convenient for the user to insert a finger into the connecting lamp body 1 to pull the buckle portion 11, allowing the user's finger to better engage with the buckle portion 11 and apply force to the buckle portion 11. It also shortens the distance that the buckle portion 11 extends into the connecting lamp body 1, preventing the buckle portion 11 from blocking light or affecting the installation of the optical front ring 103.

[0042] Furthermore, the end of the connecting lamp body 1 facing the heat sink 21 has an arcuate protrusion 13, the axis of which is parallel to the rotation axis of the heat sink body 2. Preferably, there are two arcuate protrusions 13, distributed along the rotation axis of the heat sink body 2. Heat sink 21 has an arcuate groove 211 on the arcuate protrusion 13, which is designed to mate with the arcuate protrusion 13, i.e., the arcuate protrusion 13 extends into the arcuate groove 211. Preferably, there are also two arcuate grooves 211, each corresponding to one of the two arcuate protrusions 13. The design of the arcuate protrusion 13 on the connecting lamp body 1 and the arcuate groove 211 on the heat sink 21 facilitates smooth and stable rotation between the connecting lamp body 1 and the heat sink body 2.

[0043] A first clearance gap 12 is formed between the two arc-shaped protrusions 13 connecting the lamp body 1. The first clearance gap 12 and the second clearance gap 221 of the light guide ring 22 are located on the same side of the rotation axis of the heat dissipation lamp body 2. The first clearance gap 12 is used to avoid the light guide ring 22, so that the heat dissipation lamp body 2 can rotate within a wider range relative to the connecting lamp body 1.

[0044] Preferably, a first stop surface 14 is formed between the two arc-shaped protrusions 13 connecting the lamp body 1, and the first avoidance gap 12 and the first stop surface 14 are respectively located on both sides of the rotation axis of the heat dissipation lamp body 2; matchingly, the connecting lamp body 1 has a first stop surface 14, and the heat sink 21 is provided with a second stop surface 212 that cooperates with the first stop surface 14, and the second stop surface 212 can be rotated around the rotation axis until it contacts the first stop surface 14. When the first stop surface 14 contacts the second stop surface 212, the axis of the light guide ring 22 is parallel to the axis of the connecting lamp body 1, so that the lamp body unit 101 can have an accurate vertical illumination position to meet the user's vertical illumination requirements for the lamp 100.

[0045] Furthermore, the light guide ring 22 is provided with a tooth groove 223 at the arcuate groove 211; whereas in this embodiment, a first elastic arm 131 is provided at the arcuate protrusion 13, and the movable end of the first elastic arm 131 has a tooth portion 1311, which engages with the tooth groove 223. This design provides a better adjustment feel and experience when rotating and adjusting the connection lamp body 1 and the heat dissipation lamp body 2. Of course, as another optional solution, in other embodiments, a first spring plunger can also be provided at the arcuate protrusion 13 of the connection lamp body 1 to replace the first elastic arm 131, wherein the positioning bead of the first spring plunger engages with the tooth groove 223.

[0046] Combine Figures 7 to 9 The face ring 102 is detachably mounted on the connecting lamp body 1, and the handle portion 11 is located between the heat dissipation lamp body 2 and the bottom of the face ring 102 in the height direction of the face ring 102. Preferably, a second flange portion 15 is provided on the connecting lamp body 1, and a first annular protrusion 1021 is provided on the inner wall of the face ring 102. When the face ring 102 and the connecting lamp body 1 are assembled, the second flange portion 15 is located below and adjacent to the first annular protrusion 1021 in the height direction of the face ring 102, thereby limiting the excessive movement of the lamp body unit 101 toward the top of the face ring 102.

[0047] As a first preferred solution, the lamp body 1 and the face ring 102 can be connected in a detachable manner by interference fit.

[0048] As a second optional solution, a first groove body can be set on one of the outer periphery of the connected lamp body 1 and the inner periphery of the face ring 102, and an inner spring piece can be set on the other, wherein the inner spring piece has a bending structure; when the lamp body 1 and the face ring 102 are assembled, the bending part of the inner spring piece is abutted against the first groove body. For the specific setting method, please refer to the relevant settings of the inner spring piece and the groove body in the utility model patent with announcement number CN215335986U.

[0049] As a third optional solution, a second groove body can be set on one of the outer periphery of the connecting lamp body 1 and the inner periphery of the face ring 102, and a second spring plunger can be set on the other; when the connecting lamp body 1 and the face ring 102 are assembled, the positioning bead of the second spring plunger is inserted into the second groove body.

[0050] As a fourth alternative, a second elastic arm can be provided on the outer periphery of the connecting lamp body 1. The movable end of the second elastic arm has a spherical crown protrusion. A third groove is provided on the inner periphery of the face ring 102. When the connecting lamp body 1 and the face ring 102 are assembled, the spherical crown protrusion is inserted into the third groove. These designs facilitate assembly and disassembly between the connecting lamp body 1 and the face ring 102, making them easy to operate.

[0051] like Figure 4As shown, the optical front ring 103 is detachably connected to the face ring 102 or the connecting lamp body 1. The optical front ring 103 is used to enhance the lighting effect of the lamp 100. The optical front ring 103 is detachably connected to the face ring 102 or the connecting lamp body 1, so that it is more convenient to remove the lamp body unit 101 from the face ring 102 when it is needed. Specifically, when removing the lamp body unit 101 from the face ring 102, first remove the optical front ring 103 from the face ring 102 or the connecting lamp body 1, and then pull the buckle part 11 on the connecting lamp body 1 toward the bottom of the face ring 102 to remove the lamp body unit 101 from the face ring 102. As in this embodiment, a second annular protrusion 1022 is provided on the inner wall of the face ring 102, and the second annular protrusion 1022 is located between the first annular protrusion 1021 and the bottom of the face ring 102; an elastic buckle 1031 and a third eaves portion 1032 are provided on the optical front ring 103, and the third eaves portion 1032 is preferably located at the bottom of the optical front ring 103, and a clamping position is formed between the third eaves portion 1032 and the elastic buckle 1031. When the optical front ring 103 and the face ring 102 are assembled, the face ring 102 is put on the optical front ring 103, and the second annular protrusion 1022 on the face ring 102 is clamped in the clamping position formed between the third eaves portion 1032 and the elastic buckle 1031.

[0052] Furthermore, in this embodiment, the face ring 102 is provided with two symmetrically arranged spring clips 1023. When the face ring 102 is installed in the mounting hole of the external component, the spring clips 1023 elastically deform and abut against the wall of the mounting hole, thereby securing the lamp 100 to the external component. The bottom of the face ring 102 has a flange 1024. When the face ring 102 is installed on the external component, the top of the flange 1024 abuts against the bottom of the external component, thereby limiting the position of the lamp 100 and preventing it from excessively moving inwardly of the external component. Alternatively, in other embodiments, the spring clips 1023 can be replaced with elastic fasteners, forming a clamping position between the elastic fastener and the flange 1024 to clamp the external component, thereby similarly securing the lamp 100 to the external component.

[0053] Lighting system embodiment

[0054] The lighting system includes a control terminal and the lamp described in the above-mentioned lamp embodiments. The control terminal is electrically connected to the lamp's light source module or control unit, and / or exchanges information with the lamp's light source module or control unit. The control terminal can be a conventional control panel (such as a mechanical switch panel), an intelligent control panel, or a remote control. When the control terminal is a conventional control panel, the control terminal is electrically connected to the lamp's light source module or control unit. When the control terminal is an intelligent control panel or remote control, the lamp's light source module or control unit is provided with a first wireless communication module and the control terminal is provided with a second wireless communication module. The control terminal is electrically connected to the lamp's light source module or control unit, and / or the first wireless communication module exchanges information with the second wireless communication module. Furthermore, the control terminal can also be a smart mobile terminal (such as a mobile phone, tablet computer, smart wearable device, etc.) or an artificial intelligence robot. By providing the above-mentioned lamps, the lighting system facilitates maintenance.

[0055] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lamp comprising a lamp body unit and a face ring, characterized in that: The lamp body unit includes a connecting lamp body and a heat dissipation lamp body, wherein the connecting lamp body is rotatably connected to the heat dissipation lamp body, the face ring is detachably mounted on the connecting lamp body, and a buckle portion is provided on the connecting lamp body, and the buckle portion extends from the inner wall of the connecting lamp body into the connecting lamp body; In the height direction of the face ring, the buckle portion is located between the heat dissipation lamp body and the bottom of the face ring.

2. The lamp according to claim 1, characterized in that: The buckle portion and the connecting lamp body are integrally formed through an injection molding process.

3. The lamp according to claim 2, characterized in that: The number of the buckle parts is two, and the two buckle parts are distributed along the circumference of the connection lamp body.

4. The lamp according to claim 1, characterized in that: The connecting lamp body is provided with a first avoidance gap; The heat dissipation lamp body includes a heat sink and a light guide ring. The heat sink is sleeved on the light guide ring and is located at one end of the light guide ring. A second avoidance notch is provided at the second end of the light guide ring. The first avoidance notch and the second avoidance notch are located on the same side of the rotation axis of the heat dissipation lamp body. A light shield is provided on the outer periphery of the second end of the light guide ring. The light shield surrounds and covers the second avoidance notch. The light shield is provided with a connecting ear, the connecting ear is rotatably connected to the connecting lamp body, and the light shield and the light guide ring are integrally formed through an injection molding process.

5. The lamp according to claim 4, characterized in that: The end of the connecting lamp body facing the radiator has an arc-shaped protrusion, the axis of the arc-shaped protrusion is parallel to the rotation axis, the radiator is provided with an arc-shaped groove matching the arc-shaped protrusion, and the light guide ring is provided with a tooth groove at the arc-shaped groove; The arc-shaped protrusion is provided with a first elastic arm, the movable end of the first elastic arm has a tooth portion, and the tooth portion is engaged with the tooth groove, or A first spring plunger is provided at the arc-shaped protrusion, and a positioning bead of the first spring plunger is engaged with the tooth groove.

6. The lamp according to claim 5, characterized in that: There are two arc-shaped protrusions, which are distributed along the rotation axis; there are two arc-shaped grooves, which correspond one to one with the two arc-shaped grooves; The connecting lamp body is provided with a first stop surface, the rotation axis is located between the first stop surface and the first avoidance gap, the radiator is provided with a second stop surface that cooperates with the first stop surface, the second stop surface can be rotated around the rotation axis until it contacts the first stop surface, and when the first stop surface contacts the second stop surface, the axis of the light guide ring is parallel to the axis of the connecting lamp body.

7. The lamp according to claim 4, characterized in that: The light shield has an escape groove near the buckle portion, and the escape groove is recessed from the outer surface of the light shield toward the inside of the light shield.

8. The lamp according to claim 1, wherein: The connecting lamp body and the face ring are interference fit; or One of the outer periphery of the connecting lamp body and the inner periphery of the face ring is provided with a first groove body, and the other is provided with an inner spring piece, the inner spring piece has a bent structure, and the bent portion of the inner spring piece abuts against the first groove body; or A second groove is provided on one of the outer periphery of the connecting lamp body and the inner periphery of the face ring, and a second spring plunger is provided on the other, and a positioning bead of the second spring plunger is inserted into the second groove; or The outer periphery of the connecting lamp body is provided with a second elastic arm, the movable end of the second elastic arm is provided with a spherical crown protrusion, the inner periphery of the face ring is provided with a third groove body, and the spherical crown protrusion is inserted into the third groove body.

9. The lamp according to any one of claims 1 to 8, characterized in that: The lamp further comprises an optical front ring, which is detachably connected to the face ring or the connecting lamp body; The face ring is provided with a shrapnel, or An elastic fastener is provided on the face ring, and the bottom of the face ring has a brim portion, and a clamping position is formed between the elastic fastener and the brim portion.

10. A lighting system including a control terminal, characterized in that: The lighting system further comprises a lamp according to any one of claims 1 to 9; The control terminal is electrically connected to the lamp, and / or The control terminal exchanges information with the lamp.

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