A downlight

Abstract

A down lamp, comprising a base and a lamp group detachably arranged on the base, the lamp group is provided with a movable piece, the movable piece is provided with a plurality of first positioning blocks arranged in a circumferential direction, the base is provided with a plurality of second positioning blocks arranged in a circumferential direction and a driving piece above the second positioning blocks, when the lamp group is fixed on the base, the first positioning blocks are in limited contact with the second positioning blocks and abut on upper portions of the second positioning blocks, a passage for the first positioning blocks to pass through is left between two adjacent second positioning blocks, the driving piece cooperates with the movable piece and is used for driving the movable piece to rotate so that the first positioning blocks rotate to a first position capable of cooperating with the second positioning blocks when the lamp group is installed and rotate to a second position capable of cooperating with the passage when the lamp group is disassembled. The lamp group is detachably arranged on the base, the lamp group is convenient to disassemble and replace, the lamp group has a simple structure and low replacement cost.

Description

Technical Field

[0001] This utility model belongs to the field of lighting technology, specifically relating to a downlight. Background Technology

[0002] A downlight is a type of lighting fixture that is embedded in the ceiling and emits light downwards. For example, Chinese utility model patent No. 201520698134.5 discloses a downlight housing and a downlight. The downlight includes a downlight housing, a light source assembly, and a light-transmitting cover. The light source assembly and the light-transmitting cover are part of the downlight's lamp assembly. The light source assembly suffers from reduced brightness or failure to light up after long-term use, requiring the replacement of the entire downlight. The disassembly and assembly of the downlight, wiring, etc., requires professional installation personnel, which has certain limitations. In addition, if the lamp assembly could be replaced separately, it would help reduce the replacement cost. Moreover, the simpler the structure of the lamp assembly, the lower the replacement cost. In view of this, it is necessary to improve the existing downlight structure. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a downlight with a detachable lamp assembly mounted on the base. The lamp assembly is easy to assemble and disassemble, easy to replace, and has a simple structure with low replacement cost.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows: This downlight includes a base and a detachable lamp assembly mounted on the base. The lamp assembly has a movable component with several first positioning blocks arranged at intervals along the circumference. The base has several second positioning blocks arranged at intervals along the circumference and a driving component located above the second positioning blocks. When the lamp assembly is fixed on the base, the first positioning blocks make limiting contact with the second positioning blocks and abut against the upper part of the second positioning blocks. A channel is left between two adjacent second positioning blocks for a first positioning block to pass through vertically. The driving component cooperates with the movable component and is used to drive the movable component to rotate so that when the lamp assembly is installed, the first positioning blocks rotate to a first position that can cooperate with the second positioning blocks, and when the lamp assembly is disassembled, the first positioning blocks rotate to a second position that can cooperate with the channel.

[0005] In a further embodiment of this utility model, the upper part of the second positioning block is provided with a positioning groove, and when the lamp assembly is fixed on the base, the first positioning block abuts against the positioning groove, and the lower part of the first positioning block is provided with an embedding part that cooperates with the positioning groove. The bottom of the positioning groove is provided with a first guide slope for guiding the first positioning block to abut against the second positioning block. The first guide slope extends obliquely upward from the inner end to the outer end to the first side edge of the positioning groove. The upper part of the second positioning block is provided with a second guide slope for guiding the first positioning block to fall into the channel. The second guide slope is located above the positioning groove. The second guide slope extends obliquely downward from the inner end to the outer end to the second side edge of the positioning groove. The positioning groove and the second guide slope on the second positioning block are arranged sequentially along the circumference. The inner end of the second guide slope is located above the inner end of the first guide slope. The lower part of the first positioning block is provided with a low-position slope. The low-position slope is located at the bottom of the embedded part. The low-position slope is configured to cooperate with the first guide slope and the second guide slope.

[0006] In a further embodiment of the present invention, the driving component includes a plurality of third guide slopes located at the lower part of the driving component and arranged sequentially along the circumference. The upper part of the first positioning block is provided with a high-level slope for cooperating with the third guide slopes. In two adjacent third guide slopes, the lowest position of one third guide slope is opposite to one of the channels and the highest position is opposite to one of the positioning grooves. The lowest position of the other third guide slope is opposite to the same positioning groove and the highest position is opposite to the second guide slope of another channel or the same positioning groove. The lower part of the drive component has several teeth arranged in sequence along the circumference, and the lower part of the teeth forms the third guide slope.

[0007] In a further embodiment of this utility model, an elastic component is provided on the base. The elastic component is configured to apply a downward force to the movable component before the movable component contacts and engages with the driving component, and to apply a downward force to the movable component when the lamp assembly is fixed on the base. The upper part of the first positioning block contacts and engages with the elastic component. The elastic component includes a frame that is movably mounted on the base and a spring that is mounted between the base and the frame. The lower part of the frame is a contact part that cooperates with the first positioning block. The contact part is located around the drive component. There is a gap between the second positioning block and the drive component. The contact part is movably mounted within this gap.

[0008] In a further embodiment of this utility model, the base includes an upper cavity and a lower cavity connected to the lower part of the upper cavity, and the second positioning block, driving member, elastic component, and interval are all located in the upper cavity; The downlight includes a power connection assembly, which includes a flexible power connection post disposed in the base and a power connection piece disposed on the lamp assembly. When the lamp assembly is fixed on the base, the flexible power connection post and the power connection piece are in contact with each other, and the flexible power connection post is located in the upper cavity.

[0009] In a further embodiment of this utility model, the base includes an upper mounting head and a cover connected to the lower part of the upper mounting head. The upper mounting head has an upper cavity inside, and the cover has a lower cavity inside. The upper mounting head includes a top cover and an annular component located at the bottom of the top cover. The driving component is fixed to the bottom of the top cover and located inside the annular component. The second positioning block is located on the inner wall of the annular component. The frame is located between the top cover and the annular component. The cover is fixed to the bottom of the annular component. The upper part of the spring abuts against the top cover.

[0010] In a further embodiment of this utility model, the top cover is provided with a downwardly extending guide cylinder, the frame is fitted around the guide cylinder, the inner side of the annular part is provided with an upwardly extending positioning cylinder for abutting and cooperating with the frame, the frame is provided with a downwardly extending transmission cylinder, the transmission cylinder is located inside the positioning cylinder and extends into the interval, the lower part of the transmission cylinder forms a contact part, the transmission cylinder is located around the drive member, and the elastic electrical post passes through the drive member and extends downward into the interval.

[0011] In a further embodiment of this utility model, the lamp assembly includes a lower mounting head that is plugged into the upper mounting head, a housing disposed at the lower part of the lower mounting head, and a light-emitting element disposed within the housing. The housing is located inside the cover, the contact plate is electrically connected to the light-emitting element, and the movable part is disposed on the lower mounting head.

[0012] In a further embodiment of this utility model, the lower mounting head includes a positioning seat fixed to the upper part of the housing and a face cover fixed to the positioning seat. The movable part is rotatably disposed around the face cover and located above the positioning seat. The contact plate is disposed on the face cover, and the face cover confines the movable part between the face cover and the positioning seat.

[0013] In a further embodiment of this utility model, the lower part of the second positioning block is provided with a fourth guide slope for guiding the first positioning block upward into the channel.

[0014] The driving component is fixedly installed inside the base. The upper and side parts of the first positioning block protrude outward from the movable component, which is ring-shaped. After the lamp assembly is installed on the base, the driving component, the first positioning block of the movable component, and the second positioning block are arranged sequentially from top to bottom.

[0015] The beneficial effects of this utility model are as follows: 1. The lamp assembly of this utility model is detachably mounted on the base. The lamp assembly can be detached and mounted on the base by moving up and down. The lamp assembly is easy to detach and replace.

[0016] 2. This utility model places the driving component on the base, which is conducive to simplifying the structure of the lamp assembly, facilitating the production and manufacturing of the lamp assembly, and reducing the replacement cost of the lamp assembly. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the base and lamp assembly in an exploded state in some embodiments of this utility model.

[0018] Figure 2 This is a schematic diagram of the lamp assembly in some embodiments of this utility model.

[0019] Figure 3 This is a schematic diagram of the base structure in some embodiments of the present invention.

[0020] Figure 4 This is an exploded view of the lamp assembly in some embodiments of this utility model.

[0021] Figure 5 This is an exploded view of the base in some embodiments of the present invention.

[0022] Figure 6 This is a cross-sectional view of the base and lamp assembly in some embodiments of this utility model.

[0023] Figure 7 This is a cross-sectional view of the base and lamp assembly in some embodiments of the present invention, with the lamp assembly structure other than the first positioning block hidden. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] like Figure 1-7As shown, this downlight includes a base 1 and a detachable lamp assembly 2 mounted on the base 1. The lamp assembly 2 can be independently installed and removed. The lamp assembly 2 has a movable component 3, which has several first positioning blocks 31 arranged circumferentially at intervals. The base 1 has several second positioning blocks 11 arranged circumferentially at intervals and a driving component 4 located above the second positioning blocks 11. When the lamp assembly 2 is fixed to the base 1, the first positioning blocks 31 and second positioning blocks 11 make limiting contact and abut against the upper part of the second positioning blocks 11. The second positioning blocks 11 restrict the downward movement of the first positioning blocks 31, thus positioning the lamp assembly 2 on the base 1. A channel 12 is provided between two adjacent second positioning blocks 11 for a first positioning block 31 to pass through vertically. When the lamp assembly 2 is installed… The lamp assembly 2 is mounted upward on the base 1. The first positioning block 31 can pass upward through the channel 12. When the lamp assembly 2 is disassembled, the first positioning block 31 can disengage downward through the channel 12. The driving component 4 cooperates with the movable component 3 and is used to drive the movable component 3 to rotate so that when the lamp assembly 2 is installed, the first positioning block 31 rotates to a first position that can cooperate with the second positioning block 11, and when the lamp assembly 2 is disassembled, the first positioning block 31 rotates to a second position that can cooperate with the channel 12. When the lamp assembly 2 is installed, after the first positioning block 31 of the movable component 3 moves upward through the channel 12, the movable component 3 can contact and cooperate with the driving component 4 to achieve rotation. When the lamp assembly 2 is disassembled, when the movable component 3 moves upward, the movable component 3 can contact and cooperate with the driving component 4 to achieve rotation.

[0026] The specific installation and removal methods for this downlight are as follows: When the lamp assembly 2 is installed, it is driven to move upward and be assembled on the base 1. When the first positioning block 31 of the lamp assembly 2 moves upward through the channel 12 and the movable part 3 moves upward synchronously, it cooperates with the driving part 4. The movable part 3 rotates to make the first positioning block 31 rotate to the first position that can cooperate with the second positioning block 11. At this time, the lamp assembly 2 is no longer driven to move upward. During the downward retraction of the lamp assembly 2, the first positioning block 31 makes limited contact with the second positioning block 11 and abuts against the upper part of the second positioning block 11, so that the lamp assembly 2 is fixed on the base 1. That is, the lamp assembly 2 can be installed on the base 1 by pressing the lamp assembly 2. When the lamp assembly 2 is disassembled, it moves upward, causing the movable part 3 to move upward synchronously and cooperate with the driving part 4. The movable part 3 rotates, causing the first positioning block 31 to rotate to a second position that can cooperate with the channel 12. At this time, the lamp assembly 2 is no longer driven to move upward. During the downward retraction of the lamp assembly 2, the first positioning block 31 can disengage downward through the channel 12, so that the entire lamp assembly 2 can be removed from the base 1. That is, the lamp assembly 2 can be disassembled from the base 1 by pressing the lamp assembly 2. The lamp assembly 2 of this utility model is detachably mounted on the base 1. The lamp assembly 2 can be detached and mounted on the base 1 by moving up and down. The lamp assembly 2 is easy to detach and replace. In addition, the drive component 4 is arranged on the base 1, which is conducive to the simplification of the structure of the lamp assembly 2, facilitates the production and manufacturing of the lamp assembly 2, and reduces the replacement cost of the lamp assembly 2.

[0027] In some embodiments of this utility model, such as Figure 1 , 5 As shown, the upper part of the second positioning block 11 is provided with a positioning groove 111. When the lamp group 2 is fixed on the base 1, the first positioning block 31 abuts against the positioning groove 111 to realize the positioning of the lamp group 2. The lower part of the first positioning block 31 is provided with an insert part 311 that cooperates with the positioning groove 111. The cooperation form between the insert part 311 and the positioning groove 111 helps to prevent the second positioning block 11 from falling out of the positioning groove 111 without human intervention, thus ensuring the installation stability of the lamp group 2.

[0028] The bottom of the positioning groove 111 is provided with a first guide slope 1111 for guiding the first positioning block 31 to abut against the second positioning block 11. The first guide slope 1111 extends obliquely upward from the inner end to the outer end to the first side edge of the positioning groove 111, so that when the first positioning block 31 moves downward with the lamp group 2, when the first positioning block 31 contacts any position of the first guide slope 1111, the first positioning block 31 can move towards the inner end of the first guide slope 1111 under the guidance of the first guide slope 1111, and finally the first positioning block 31 is stably abutted against the upper part of the second positioning block 11. The upper part of the second positioning block 11 is provided with a second guide slope 12 for guiding the first positioning block 31 to fall into the channel 12. The second guide slope 112 is located above the positioning groove 111. The second guide slope 112 extends obliquely downwards from its inner end to the second side edge of the positioning groove 111, allowing the first positioning block 31 to move downwards with the lamp assembly 2. When the first positioning block 31 contacts any position on the second guide slope 112, it can move towards the channel 12 under the guidance of the second guide slope 112, and ultimately detach downwards through the channel 12. The positioning groove 111 and the second guide slope 112 on the second positioning block 11 are arranged sequentially circumferentially. The inner end of the second guide slope 112 is located above the inner end of the first guide slope 111. Figure 1 , 4 As shown, the lower part of the first positioning block 31 is provided with a low-position slope 312. The low-position slope 312 is located at the bottom of the embedded part 311 and is configured to cooperate with the first guide slope 1111 and the second guide slope 112.

[0029] In some embodiments of this utility model, such as Figure 1 , 5As shown, the driving component 4 includes several third guide slopes 41 located at the lower part of the driving component 4 and arranged sequentially along the circumference. The upper part of the first positioning block 31 is provided with a high-position slope 313 for cooperating with the third guide slopes 41. Among two adjacent third guide slopes 41, the lowest position of one of the third guide slopes 41 is opposite to one of the channels 12 and the highest position is opposite to one of the positioning grooves 111. That is, when the lamp group 2 is installed, the lamp group 2 moves upward, and the first positioning block 31 moves upward through the channel 12 and can be opposite to the lowest position of one of the third guide slopes 41. When the first positioning block 31 continues to move upward and the high-position slope 313 cooperates with the third guide slope 41, the first positioning block 31 rotates from the lowest position of the third guide slope 41 to the highest position of the third guide slope 41. At this time, the first positioning block 31 is opposite to one of the positioning grooves 111. When the lamp group 2 moves downward and retracts, the first positioning block 31 can... The first positioning block 31 is able to cooperate with the positioning groove 111 below to fix it, so as to realize the installation of the lamp group 2. The lowest position of the other third guide slope 41 is opposite to the same positioning groove 111, and the highest position is opposite to the second guide slope 112 of another channel 12 or the same positioning groove 111. That is, when the lamp group 2 is disassembled, the lamp group 2 moves upward, the first positioning block 31 disengages from the currently cooperating positioning groove 111, and the first positioning block 31 cooperates with the lowest position of the other third guide slope 41. The first positioning block 31 rotates from the lowest position of the third guide slope 41 to the highest position of the third guide slope 41. At this time, the first positioning block 31 is opposite to the second guide slope 112 of another channel 12 or the same positioning groove 111. When the lamp group 2 moves downward in the future, the first positioning block 31 can disengage downward through the other channel 12 or enter the other channel 12 under the action of the second guide slope 112 of the same positioning groove 111 to achieve disengagement.

[0030] The lower part of the drive component 4 is provided with several teeth 42 arranged in sequence along the circumference, and the lower part of the teeth 42 forms the third guide slope 41.

[0031] In some embodiments of this utility model, such as Figure 1 , 5 As shown, the base 1 is provided with an elastic component 5. The elastic component 5 is configured to apply a downward force to the movable part 3 before the movable part 3 contacts and engages with the driving part 4, and to apply a downward force to the movable part 3 when the lamp assembly 2 is fixed on the base 1. When the lamp assembly 2 is installed and disassembled, after the operator drives the lamp assembly 2 upward and no longer applies a force, the elastic component 5 drives the lamp assembly 2 to move downward. After the lamp assembly 2 is installed, the elastic component 5 applies a downward force to the movable part 3 so that the first positioning block 31 is tightly abutted against the second positioning block 11, ensuring that the first positioning block 31 is difficult to disengage from the positioning groove 111 of the second positioning block 11 without human intervention, thereby improving the installation stability of the lamp assembly 2. The upper part of the first positioning block 31 contacts and engages with the elastic component 5. The elastic component 5 includes a frame 51 that is movably mounted on the base 1 and a spring 52 that is mounted between the base 1 and the frame 51. The lower part of the frame 51 is a contact part 511 that cooperates with the first positioning block 31. The contact part 511 is located around the drive member 4. The first positioning block 31 can cooperate with the frame 51 and the drive member 4. There is a gap 13 between the second positioning block 11 and the drive member 4. The contact part 511 is movably mounted in the gap 13 so that the first positioning block 31 can cooperate with the contact part 511 first after entering the gap 13.

[0032] In some embodiments of this utility model, such as Figure 1 , 5 As shown, the base 1 includes an upper cavity 14 and a lower cavity 15 connected to the lower part of the upper cavity 14. The second positioning block 11, the driving member 4, the elastic component 5, and the interval 13 are all located inside the upper cavity 14. The downlight includes a power connection assembly, which includes a flexible power connection post 61 disposed in the base 1 and a power connection piece 62 disposed on the lamp assembly 2. When the lamp assembly 2 is fixed on the base 1, the flexible power connection post 61 and the power connection piece 62 abut against each other to realize the power supply connection of the lamp assembly 2. The flexible power connection post 61 is located in the upper cavity 14. The base 1 is also provided with a line that is electrically connected to the flexible power connection post 61. The line extends outward from the base 1 and is used to connect to the external mains power.

[0033] In some embodiments of this utility model, such as Figure 1 , 5 As shown, the base 1 includes an upper mounting head 16 and a cover 17 connected to the lower part of the upper mounting head 16. The upper mounting head 16 forms an upper cavity 14, and the cover 17 forms a lower cavity 15. The upper mounting head 16 includes a top cover 161 and an annular part 162 disposed at the lower part of the top cover 161. The driving part 4 is fixed to the lower part of the top cover 161 and located inside the annular part 162. The second positioning block 11 is located on the inner side wall of the annular part 162. The frame 51 is located between the top cover 161 and the annular part 162. The cover 17 is fixed to the lower part of the annular part 162. The upper part of the spring 52 abuts against the top cover 161 to realize the upper positioning of the spring 52.

[0034] In some embodiments of this utility model, such as Figure 1 , 5As shown, the top cover 161 is provided with a downwardly extending guide cylinder 1611. The frame 51 is fitted around the guide cylinder 1611 to guide the up and down movement of the frame 51. The inner side of the annular member 162 is provided with an upwardly extending positioning cylinder 1621 for abutting against the frame 51 to limit the maximum downward movement of the frame 51. The frame 51 is provided with a downwardly extending transmission cylinder 512. The transmission cylinder 512 is located inside the positioning cylinder 1621 and extends into the interval 13. The lower part of the transmission cylinder 512 forms a contact part 511. The transmission cylinder 512 is located around the drive member 4 so that the frame 51 can cooperate with the first positioning block 31. The elastic contact post 61 passes through the drive member 4 and extends downward into the interval 13 so that the elastic contact post 61 can cooperate with the contact piece 62.

[0035] In some embodiments of this utility model, such as Figure 1 , 2 As shown in Figure 4, the lamp assembly 2 includes a lower mounting head 21 that is plugged into the upper mounting head 16, a housing 22 disposed at the lower part of the lower mounting head 21, and a light-emitting element 23 disposed in the housing 22. In this embodiment, the light-emitting element 23 is an LED light board. The housing 22 is located inside the cover 17. The connecting piece 62 is electrically connected to the light-emitting element 23. The movable part 3 is disposed on the lower mounting head 21. The upper mounting head 16 and the lower mounting head 21 enable the lamp assembly 2 to be plugged into the base 1, which facilitates the assembly and disassembly of the lamp assembly 2.

[0036] In some embodiments of this utility model, such as Figure 1 , 2 As shown in Figure 4, the lower mounting head 21 includes a positioning seat 211 fixed to the upper part of the housing 22 and a face cover 212 fixed to the positioning seat 211. The movable member 3 is rotatably disposed around the face cover 212 and located above the positioning seat 211. The electrical contact piece 62 is disposed on the face cover 212 to facilitate connection with the elastic electrical contact post 61. The face cover 212 confines the movable member 3 between the face cover 212 and the positioning seat 211.

[0037] In some embodiments of this utility model, such as Figure 5 As shown, the lower part of the second positioning block 11 is provided with a fourth guide slope 113 for guiding the first positioning block 31 upward into the channel 12, so that when the lamp group 2 is installed upward, the first positioning block 31 can enter the channel 12 under the action of the fourth guide slope 113.

[0038] like Figure 1 , 4As shown, the driving component 4 is fixedly installed in the base 1. The upper and side parts of the first positioning block 31 protrude outward from the movable component 3, which facilitates the cooperation of the first positioning block 31 with the driving component 4, the second positioning block 11, and the elastic component 5. The movable component 3 is ring-shaped. After the lamp assembly 2 is installed on the base 1, the first positioning block 31 and the second positioning block 11 of the driving component 4 and the movable component 3 are arranged in sequence from top to bottom, so that when the lamp assembly 2 is disassembled, the lamp assembly 2 can move upward to make the first positioning block 31 cooperate with the driving component 4.

[0039] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A downlight, characterized in that, Includes a base (1) and a detachable lamp assembly (2) mounted on the base (1). The lamp assembly (2) is provided with a movable part (3). The movable part (3) is provided with a number of first positioning blocks (31) arranged circumferentially. The base (1) is provided with a number of second positioning blocks (11) arranged circumferentially and a driving part (4) located above the second positioning blocks (11). When the lamp assembly (2) is fixed on the base (1), the first positioning blocks (31) and the second positioning blocks (11) are in limiting contact and abut against each other. On the upper part of the second positioning block (11), there is a channel (12) between two adjacent second positioning blocks (11) for a first positioning block (31) to pass through vertically. The driving member (4) cooperates with the movable member (3) and is used to drive the movable member (3) to rotate so that when the lamp assembly (2) is installed, the first positioning block (31) rotates to a first position that can cooperate with the second positioning block (11) and when the lamp assembly (2) is disassembled, the first positioning block (31) rotates to a second position that can cooperate with the channel (12).

2. The downlight according to claim 1, characterized in that, The second positioning block (11) has a positioning groove (111) on its upper part. When the lamp assembly (2) is fixed on the base (1), the first positioning block (31) abuts against the positioning groove (111). The lower part of the first positioning block (31) has an insert (311) that cooperates with the positioning groove (111). The bottom of the positioning groove (111) is provided with a first guide slope (1111) for guiding the first positioning block (31) to abut against the second positioning block (11). The first guide slope (1111) extends obliquely upward from the inner end to the outer end to the first side edge of the positioning groove (111). The upper part of the second positioning block (11) is provided with a second guide slope (112) for guiding the first positioning block (31) to fall into the channel (12). The second guide slope (112) is located above the positioning groove (111) and extends from the inner end to the outer end. Extending diagonally downward to the second side edge of the positioning groove (111), the positioning groove (111) and the second guide slope (112) on the second positioning block (11) are arranged in sequence along the circumference. The inner end of the second guide slope (112) is located above the inner end of the first guide slope (1111). The lower part of the first positioning block (31) is provided with a low slope (312). The low slope (312) is located at the bottom of the embedded part (311). The low slope (312) is configured to cooperate with the first guide slope (1111) and the second guide slope (112).

3. The downlight according to claim 2, characterized in that, The driving component (4) includes several third guide slopes (41) located at the lower part of the driving component (4) and arranged in sequence along the circumference. The upper part of the first positioning block (31) is provided with a high slope (313) for cooperating with the third guide slopes (41). Among two adjacent third guide slopes (41), the lowest position of one third guide slope (41) is opposite to one of the channels (12) and the highest position is opposite to one of the positioning grooves (111). The lowest position of the other third guide slope (41) is opposite to the same positioning groove (111) and the highest position is opposite to the second guide slope (112) of another channel (12) or the same positioning groove (111). The lower part of the drive component (4) is provided with a number of teeth (42) arranged in sequence along the circumference, and the lower part of the teeth (42) forms a third guide slope (41).

4. The downlight according to claim 3, characterized in that, The base (1) is provided with an elastic component (5), which is configured to apply a downward force to the movable component (3) before the movable component (3) and the driving component (4) are in contact and to apply a downward force to the movable component (3) when the lamp assembly (2) is fixed on the base (1). The upper part of the first positioning block (31) is in contact and in cooperation with the elastic component (5). The elastic component (5) includes a frame (51) that is movably mounted on the base (1) and a spring (52) that is mounted between the base (1) and the frame (51). The lower part of the frame (51) is a contact part (511) that cooperates with the first positioning block (31). The contact part (511) is located around the drive member (4). There is a gap (13) between the second positioning block (11) and the drive member (4). The contact part (511) is movably mounted in the gap (13).

5. The downlight according to claim 4, characterized in that, The base (1) includes an upper cavity (14) and a lower cavity (15) connected to the lower part of the upper cavity (14). The second positioning block (11), the driving component (4), the elastic component (5), and the interval (13) are all located in the upper cavity (14). The downlight includes a power connection assembly, which includes an elastic power connection post (61) disposed in the base (1) and a power connection piece (62) disposed on the lamp assembly (2). When the lamp assembly (2) is fixed on the base (1), the elastic power connection post (61) and the power connection piece (62) abut against each other, and the elastic power connection post (61) is located in the upper cavity (14).

6. The downlight according to claim 5, characterized in that, The base (1) includes an upper mounting head (16) and a cover (17) connected to the lower part of the upper mounting head (16). The upper mounting head (16) has an upper cavity (14) inside, and the cover (17) has a lower cavity (15) inside. The upper mounting head (16) includes a top cover (161) and an annular part (162) disposed at the lower part of the top cover (161). The driving part (4) is fixed to the lower part of the top cover (161) and located inside the annular part (162). The second positioning block (11) is located on the inner wall of the annular part (162). The frame (51) is located between the top cover (161) and the annular part (162). The cover (17) is fixed to the lower part of the annular part (162). The upper part of the spring (52) abuts against the top cover (161).

7. The downlight according to claim 6, characterized in that, The top cover (161) is provided with a downward extending guide cylinder (1611), the frame (51) is fitted around the guide cylinder (1611), the inner side of the annular part (162) is provided with an upward extending positioning cylinder (1621) for abutting and cooperating with the frame (51), the frame (51) is provided with a downward extending transmission cylinder (512), the transmission cylinder (512) is located inside the positioning cylinder (1621) and extends into the interval (13), the lower part of the transmission cylinder (512) forms a contact part (511), the transmission cylinder (512) is located around the drive member (4), the elastic electrical post (61) passes through the drive member (4) and extends downward into the interval (13).

8. The downlight according to claim 7, characterized in that, The lamp assembly (2) includes a lower mounting head (21) that is plugged into the upper mounting head (16), a housing (22) located at the lower part of the lower mounting head (21), and a light-emitting element (23) located inside the housing (22). The housing (22) is located inside the cover (17), the connecting piece (62) is electrically connected to the light-emitting element (23), and the movable part (3) is located on the lower mounting head (21).

9. The downlight according to claim 8, characterized in that, The lower mounting head (21) includes a positioning seat (211) fixed to the upper part of the housing (22) and a face cover (212) fixed to the positioning seat (211). The movable part (3) is rotatably disposed on the periphery of the face cover (212) and located above the positioning seat (211). The electrical contact piece (62) is disposed on the face cover (212). The face cover (212) limits the movable part (3) between the face cover (212) and the positioning seat (211).

10. The downlight according to any one of claims 1-9, characterized in that, The second positioning block (11) has a fourth guide slope (113) at its lower part for guiding the first positioning block (31) upward into the channel (12); The driving component (4) is fixedly installed in the base (1). The upper and side parts of the first positioning block (31) protrude outward from the movable component (3), and the movable component (3) is ring-shaped. After the lamp group (2) is installed on the base (1), the first positioning block (31) and the second positioning block (11) of the driving component (4) and the movable component (3) are arranged from top to bottom.

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