CN212961185U

CN212961185U - Down lamp

Info

Publication number: CN212961185U
Application number: CN202021667204.8U
Authority: CN
Inventors: 刘子昂
Original assignee: Shenzhen Bravoled Lighting Manufacturing Co ltd
Current assignee: Shenzhen Bravoled Lighting Manufacturing Co ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-04-13
Anticipated expiration: 2030-08-11

Abstract

The utility model discloses a down lamp, include: the lamp shell is provided with a first groove, and the groove bottom of the first groove is a transparent groove bottom; the radiator is arranged in the first groove and is provided with a second groove, the notch of the second groove is abutted against the transparent groove bottom, and the notch and the groove bottom of the second groove face the transparent groove bottom; the light source module is arranged at the bottom of the second groove; install the buckle subassembly that the radiator deviates from the one side in second recess tank bottom includes: at least two elastic buckles; the connecting piece is used for being fixed on a ceiling and is provided with at least two clamping positions, and the clamping positions are used for being connected with the elastic clamping buckles in a clamping matching mode. The light source module is fixed at the groove bottom of the second groove of the radiator, and the radiator is fixed in the first groove of the lamp shell, so that the installation space is saved, and the overall height of the down lamp can be reduced on the premise of not changing the height of the lamp shell. Install down lamp on the ceiling through the mode of joint, not only simple structure is convenient for install moreover.

Description

Down lamp

Technical Field

The application relates to the technical field of lamps and lanterns, concretely relates to down lamp.

Background

In a common down lamp, a light emitting component and a power supply component are split, the light emitting component and the power supply component are required to be processed in the assembling process and then integrated to achieve the effect of a finished product, and the overall height of the product is higher.

SUMMERY OF THE UTILITY MODEL

This application aims at providing a down lamp, but reduces the whole height of down lamp.

The application provides a down lamp, include:

the lamp shell is provided with a first groove, and the groove bottom of the first groove is a transparent groove bottom;

a heat sink mounted within the first recess; the radiator is provided with a second groove, the notch of the second groove is abutted against the transparent groove bottom, and the notch and the groove bottom of the second groove face the transparent groove bottom;

the light source module is arranged at the bottom of the second groove;

the buckle assembly is arranged on one surface of the radiator, which deviates from the bottom of the second groove; the buckle assembly is provided with at least two elastic buckles;

the connecting piece is used for being fixed on the ceiling; the connecting piece is provided with at least two clamping positions, and the clamping positions are used for being connected with the elastic clamping buckles in a clamping matching mode.

Furthermore, the at least two elastic buckles are circumferentially and equally arranged in an array, the clamping positions are clamping holes penetrating through the thickness direction of the connecting piece, the clamping holes are mutually penetrated to form clamping round holes penetrating through the thickness direction of the connecting piece, and the size of each clamping round hole is smaller than the size of the circumference where the at least two elastic buckles are located; the at least two elastic buckles abut against the clamping round hole.

Furthermore, a plurality of limiting protrusions are arranged on one surface of the radiator, which is far away from the bottom of the second groove, the circumference of a circle where the limiting protrusions are located is concentric with the clamping round hole in the connecting piece, and the circumference of the circle where the limiting protrusions are located is equal to the clamping round hole in size; the clamping round holes are sleeved on the limiting bulges.

Further, the buckle assembly is also provided with a connecting part and a fixing part, and the connecting part is used for connecting the at least two elastic buckles; a boss is further arranged on one surface of the radiator, which is far away from the bottom of the second groove, the fixing part is fixed on the boss, and the connecting part is positioned between the boss and the fixing part; the elasticity buckle includes: the elastic part and the abutting part are arranged, one end of the elastic part is connected with the connecting part, and one end of the abutting part is connected with the other end of the elastic part; the elastic part inclines towards the direction of the radiator, and the abutting part inclines towards the direction away from the connecting part; the abutting part is provided with an abutting position, and after the abutting part penetrates through the clamping round hole, the abutting position abuts against the hole wall of the clamping round hole; the size of the clamping round hole is smaller than the circumference of the circle where the abutting position in each elastic clamping buckle is located.

Further, the elasticity buckle still includes: and an introduction portion connected to the abutting portion, the introduction portion being inclined in a direction toward the connecting portion.

Furthermore, the boss is provided with at least two positioning blind holes, the connecting part is provided with at least two positioning columns, and the positioning columns are inserted into the positioning blind holes.

Further, down lamp still includes: the annular flexible gasket, be equipped with the annular mounting groove on the lamp body, the annular mounting groove is located the notch department of first recess, the annular flexible gasket holding is in the annular mounting groove, just the height of annular flexible gasket is greater than the degree of depth of annular mounting groove.

Further, down lamp still includes: the light reflecting cup is arranged between the light source module and the bottom of the first groove, and is provided with a first opening facing the light source module, a second opening facing the bottom of the first groove, and a light reflecting surface connected between the first opening and the second opening; the light source module is positioned in the first opening; the lamp housing includes: the light-transmitting plate comprises a conical surface frame and a light-transmitting plate, wherein the bottom of the conical surface frame is provided with a conical bottom opening, and the top of the conical surface frame is provided with a conical top opening; the annular mounting groove is formed at the opening of the conical top; an annular table top protruding inwards is arranged on the periphery of the opening of the conical bottom, and the light-transmitting plate is positioned on the annular table top; the conical surface frame and the light-transmitting plate form the first groove, the light-transmitting plate is the transparent groove bottom, and the conical top opening is a notch of the first groove; at least one first arc-shaped boss is further arranged on the periphery of the annular table top and positioned in the conical surface frame; the radiator is characterized in that at least one second arc-shaped boss is arranged at a second groove notch of the radiator, a crimping part protruding towards the circumferential direction of the second opening is further arranged on the periphery of the second opening, a stopping part protruding towards the radial direction of the radiator is further arranged outside the second groove notch of the radiator, and the stopping part is used for abutting against the top of the first arc-shaped boss, so that the second arc-shaped boss faces towards one end of the annular table board and the distance between the annular table boards is equal to the sum of the thickness of the crimping part and the thickness of the light-transmitting plate.

Further, the light source module includes: the LED lamp comprises a circuit board, a plurality of LED lamp beads arranged on the circuit board and a power line; the circuit board is fixed at the position, located at the groove bottom of the second groove, of the radiator; the LED lamp beads are all positioned in the first opening; one end of the power line is used for being electrically connected with the circuit board, and the other end of the power line is used for being externally connected with a power supply.

Further, down lamp still includes: the inductor is arranged on the lamp shell and is electrically connected with the circuit board, and the head end of the inductor faces the outer side of the lamp shell; the inductor is used for inducing a movable object and controlling the connection of the LED lamp beads and an external power supply to light the LED lamp beads or controlling the disconnection of the LED lamp beads and the external power supply to extinguish the LED lamp beads.

The utility model has the advantages that:

the application provides a down lamp includes: the lamp shell is provided with a first groove, and the groove bottom of the first groove is a transparent groove bottom; a heat sink mounted within the first recess; the radiator is provided with a second groove, the notch of the second groove is abutted against the transparent groove bottom, and the notch and the groove bottom of the second groove face the transparent groove bottom; the light source module is arranged at the bottom of the second groove; the buckle assembly is arranged on one surface of the radiator, which deviates from the bottom of the second groove; the buckle subassembly includes: at least two elastic buckles; the connecting piece is used for being fixed on the ceiling; the connecting piece is provided with at least two clamping positions, and the clamping positions are used for being connected with the elastic clamping buckles in a clamping matching mode. Fix the light source module in the tank bottom department of the second recess of radiator, so, can practice thrift installation space to, fix the radiator in the first recess of lamp body, can reduce the overall height of down lamp under the prerequisite that does not change the overall height of lamp body. The mode of installing the down lamp on the ceiling is clamped on the clamping position through the elastic clamping buckle, so that the structure is simple, and the installation is convenient.

Drawings

Fig. 1 is an exploded view of a downlight provided by the present application;

fig. 2 is a schematic front view of a downlight provided by the present application;

fig. 3 is a schematic structural view of a lamp housing provided in the present application;

FIG. 4 is a schematic structural view of a buckle assembly provided herein;

FIG. 5 is a first schematic diagram illustrating the connection of the connector and the clip assembly;

FIG. 6 is a second schematic diagram of the connection of the connector and the clip assembly;

fig. 7 is a front view of a downlight provided by the present application;

FIG. 8 is a cross-sectional view A-A of FIG. 7;

FIG. 9 is an enlarged view of a portion of FIG. 8 at B;

FIG. 10 is a first schematic structural view of a downlight with an inductor installed;

fig. 11 is a schematic structural diagram of a down lamp with an inductor.

FIG. 12 is a front view of a downlight with an inductor installed;

FIG. 13 is a right side view of the downlight with the sensor installed;

fig. 14 is a schematic view of the installation of the inductor.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments.

Referring to fig. 1 to 14, the present application provides a downlight including: the lamp housing 10, the heat sink 20, the light source module 30, the clip assembly 40 and the connector 50.

The lamp housing 10 is a protective housing structure of other structures (such as a light source module) inside the down lamp. As shown in fig. 2 and 3, fig. 2 is a schematic view of the back side of the lamp housing 10, and fig. 3 is a schematic view of the front side of the lamp housing 10. The lamp envelope 10 has a first groove 11, and in the lamp envelope 10, at least the groove bottom 12 of the first groove 11 should be a transparent groove bottom.

The heat sink 20 is made of a heat conductive material and is used for dissipating heat generated by the light source module 30. The heat sink 20 is mounted and fixed in the first groove 11 of the lamp housing 10. The heat sink 20 has a second groove 21, the notch 211 of the second groove 21 abuts against the transparent groove bottom (i.e., the groove bottom 12 of the first groove 11), and both the notch 211 and the groove bottom 22 of the second groove 21 face the transparent groove bottom. In other words, the second groove 21 of the heat sink 20 is fixed in the first groove 11 of the lamp housing 10 in an inverted manner.

In a preferred embodiment, the heat sink 20 is made of aluminum to quickly dissipate heat.

The light source module 30 is used for emitting light, and the light source module 30 is installed at the bottom 22 of the second groove 21 of the heat sink 20, so that the light emitted by the light source module 30 can be emitted through the transparent bottom of the first groove 11 to illuminate the external environment.

A snap-in assembly 40 is fixed on the heat sink 20 on the side facing away from the groove bottom 22 of the second recess 21, the snap-in assembly 40 having at least two resilient snap-ins 41.

The connecting piece 50 is used for being installed and fixed on a ceiling, at least two clamping positions are arranged on the connecting piece 50, the clamping positions are consistent with the elastic clamping buckles 41 in quantity and correspond to the elastic clamping buckles in position one to one, and the clamping positions are used for being connected with the corresponding elastic clamping buckles 41 in a clamping matching mode.

The lamp housing 10, the heat sink 20, the light source module 30 and the clip assembly 40 are connected to form an integral structure, and the down lamp is mounted on the ceiling by the elastic clip 41 of the clip assembly 40 being clipped on the clipping position 51 of the connecting member 50. Therefore, the clamping installation mode is adopted, the structure is simple, and the installation is convenient.

Fix light source module 30 in the tank bottom 22 department of the second recess 21 of radiator 30, so, can practice thrift installation space to, fix radiator 20 in the first recess 11 of lamp body 10, can realize reducing down the mesh of down lamp overall height under the prerequisite of not changing lamp body 10 overall height.

The heat sink 20 is fixedly mounted on the lamp housing 10 by a screw connection manner, specifically, a plurality of first via holes 212 (as shown in fig. 1) are provided on the heat sink 20, a plurality of first screw holes 111 (as shown in fig. 3) are provided in the first groove 11 of the lamp housing 10, the first via holes 212 are consistent in number with the first screw holes 111 and are in one-to-one correspondence in position, the first connection screws 23 penetrate through the first via holes 212 and are screwed in the corresponding first screw holes 111, so that the heat sink 30 is fixed in the first groove 11 of the lamp housing 10. Of course, the light source module 30 should be installed at the groove bottom 22 of the second groove 21 of the heat sink 20 before the heat sink 20 is fixedly installed in the first groove 11 of the lamp housing 10.

The light source module 30 includes: circuit board 31, a plurality of LED lamp pearl 32 and power cord 33, all LED lamp pearls 32 all set up on circuit board 31, and the one end of power cord 33 is used for being connected with circuit board 31 electricity, and the other end of power cord 33 is used for external power supply to external power supply supplies power for all LED lamp pearls 33 through circuit board 32. The wiring board 31 is fixed to the heat sink 20 at the groove bottom 22 of the second recess 21.

In the present embodiment, the light source module 30 is also fixedly mounted on the bottom of the second groove 21 of the heat sink 20 by screwing. Specifically, the plurality of second via holes 311 are provided in the circuit board 31, the plurality of second screw holes 213 are provided in the second groove 21, the number of the second via holes 311 is equal to that of the second screw holes 213, and the positions of the second via holes 311 and the second screw holes 213 correspond to each other one by one, and the second connection screws 34 are inserted into the second via holes 311 and screwed into the second screw holes 213, so that the light source module 30 is fixed to the bottom of the second groove 21.

In the preferred embodiment, the number of the through holes, the threaded holes and the connecting screws is three, but may be four, five, six or the like in other embodiments.

Of course, in other embodiments, the heat sink 20 and the lamp housing 10, and the light source module 30 and the heat sink 20 may also be fixedly connected by other methods, such as clamping.

After installing down lamp to the ceiling, the notch of first recess 11 of lamp body 10 is in the ceiling contact, because the unevenness of ceiling surface to can appear the gap on the interface between down lamp and the ceiling, not only can make the dust get into and influence the security, still influence the installation aesthetic measure simultaneously, and it is shown with fig. 1 and fig. 3 to continue to refer to, and the down lamp that this embodiment provided still includes: an annular flexible gasket 60 is further disposed on the lamp housing 10, an annular mounting groove 13 is disposed on the annular mounting groove 13, the annular mounting groove 13 is located at the notch of the first groove 11, the annular flexible gasket 60 is accommodated and fixed (e.g., adhered by glue) in the annular mounting groove 13, and the height of the annular flexible gasket 60 is greater than the depth of the annular mounting groove 13. In this manner, the annular flexible gasket 60 can seal the gap between the interface and the ceiling after the downlight is mounted to the ceiling.

In some embodiments, the annular flexible gasket 60 may be made of foam pad or silicone.

Referring to fig. 1 and 4, all the elastic buckles 41 are arranged in an equally-divided array on the circumference, all the clamping positions on the connecting member 50 are clamping holes penetrating through the thickness direction of the connecting member 50, the clamping holes corresponding to all the clamping positions are mutually penetrated to form a clamping circular hole 51 penetrating through the thickness direction of the connecting member 50, the size of the clamping circular hole 51 is smaller than the circumference of the circle where all the elastic buckles 41 are located, and all the elastic buckles 41 are all abutted against the hole wall of the clamping circular hole 51.

In this embodiment, the connecting member 50 is specifically installed in the junction box on the ceiling, so that the connecting member 50 and the inside of the junction box can form a cavity, so that the cavity forms a space for accommodating the elastic clip 41, and at the same time, the lamp housing 10, the heat sink 20, the light source module 30, and the clip assembly 40 which are formed into an integral structure can rotate in the clip circular hole, and the rotating integral structure can drive the annular flexible gasket 60 to rotate, so as to adjust the position of the annular flexible gasket 60 according to different gap depths between the contact surface and the ceiling.

Referring to fig. 5 and 6, a plurality of limiting protrusions 24 are further disposed on a surface of the heat sink 20 away from the groove bottom 22 of the second groove 21, and all the limiting protrusions 24 are arranged in an array in a circumferentially and equally-divided manner. The circumference of the circle where all the limiting protrusions 24 are located is concentric with the clamping round hole 51 on the connecting piece 50, and the circumference of the circle where all the limiting protrusions 51 are located is equal to the size of the clamping round hole 51. When the elastic buckle 41 abuts against the hole wall of the clamping round hole 51, the clamping round hole 51 is sleeved on all the limiting protrusions 24, so that the radial displacement of the heat sink 20 relative to the connecting piece 50 can be limited, in other words, the radial displacement of the integral structure formed by the lamp housing 10, the heat sink 20, the light source module 30 and the buckle assembly 40 relative to the connecting piece 50 can be limited, and the connection stability is further improved.

Referring to fig. 1, 4, 5, 6 and 8, in this embodiment, the clip assembly 40 further includes a connecting portion 42 and a fixing portion 43, the connecting portion 42 is used to connect all the elastic clips 41, a boss 25 is further disposed on a surface of the heat sink 20 away from the bottom 22 of the second groove 21, the fixing portion 43 is fixed on the boss 25, the connecting portion 42 is located between the boss 25 and the fixing portion 43, the fixing portion 43 is a fixing plate with a plate-shaped structure, and thus, the clip assembly 20 is fixed on a surface of the heat sink 20 away from the bottom 22 of the second groove 21 through the fixing portion 43.

Specifically, a plurality of third through holes 431 are formed in the fixing portion 43, a plurality of third threaded holes (not shown) are formed in the boss 25, the number of the third through holes 431 is equal to that of the third threaded holes, and the third connecting screws 44 are screwed into the corresponding third threaded holes after passing through the third through holes 431, so that the fixing portion 43 is fixed to the boss 25.

Referring to fig. 4, the elastic clip 41 includes: the elastic portion 411, the abutting portion 412 and the introducing portion 413, wherein one end of the elastic portion 411 is connected with the connecting portion 42, one end of the abutting portion 412 is connected with the other end of the elastic portion 411, and the other end of the abutting portion 412 is connected with one end of the introducing portion 413. The elastic portion 411 is inclined toward the heat sink 20, the abutting portion 412 is inclined away from the connecting portion 42, and the guiding portion 413 is inclined toward the connecting portion 42, so as to facilitate guiding of the engaging circular hole 51. The abutting portion 412 has an abutting position H, and after the abutting portion 412 passes through the clamping round hole 51, the abutting position H abuts against the hole wall of the clamping round hole 51, so as to be connected with the connecting member 50. In the preferred embodiment, the size of the circular engaging hole 51 is smaller than the circumference of the circle where the abutting position H of each elastic engaging member 41 is located, so that the tight connection can be realized.

In order to facilitate the installation of the buckle assembly 40, at least two positioning blind holes (not shown) are further provided on the boss 25, at least two positioning pillars 421 (as shown in fig. 4) are provided on the connecting portion 42, similarly, the number of the positioning blind holes is the same as the number of the positioning pillars 421, and the positions of the positioning blind holes correspond to the positions of the positioning pillars 421, and the positioning pillars 421 are used for being inserted into the corresponding positioning blind holes to position the buckle assembly 40.

In some embodiments, the fastening assembly 40 may be a sheet structure, that is, the connecting portion 42, the elastic portion 411, the abutting portion 412, and the guiding portion 413 are sheet structures. In this embodiment, the buckle assembly 40 is formed by bending an iron wire.

Referring to fig. 1, 8 and 9, in order to collect and emit the light emitted by the light source module 30, the down lamp provided in this embodiment further includes: and the reflector cup 70, the reflector cup 70 is arranged between the light source module 30 and the groove bottom 12 of the first groove 11, the reflector cup 71 is provided with a first opening 71 facing the light source module 30, a second opening 72 facing the groove bottom 12 of the first groove 11, and a reflecting surface 73 connected between the first opening 71 and the second opening 72. In the present embodiment, the reflector cup 70 has a tapered structure, that is, the light reflecting surface 73 has a tapered shape, and the size of the second opening 72 is larger than that of the first opening 71. The light source module 30 is located in the first opening 71, that is, all the LED beads 32 in the light source module 30 are located in the first opening 72. The second opening 71 abuts against the groove bottom 12 of the first groove 11.

The lamp housing 10 described above includes: the conical surface frame 14 and the light-transmitting plate 15, the bottom of the conical surface frame 14 has a conical bottom opening 141, the top has a conical top opening 142, the annular mounting groove 13 is formed at the conical top opening 142, an annular table surface 143 protruding inwards is arranged in the circumferential direction of the conical bottom opening 141, the size of the outer ring of the annular table surface 143 is larger than or equal to the circumferential size of the light-transmitting plate 15, the size of the conical bottom opening 141 is smaller than the circumferential size of the light-transmitting plate 15, the light-transmitting plate 15 is positioned on the annular table surface 143, therefore, the conical surface frame 14 and the light-transmitting plate 15 form the first groove 11, the light-transmitting plate 15 forms the transparent groove bottom, and the conical top opening 142 forms a notch of the first groove 11.

As shown in fig. 8 and 9, at least one first arc-shaped boss 144 is further disposed on the periphery of the annular mesa 143 in the tapered face frame 14, at least one second arc-shaped boss 213 is disposed at the notch of the second groove 21 of the heat sink 20, a press-fit portion 721 protruding in the circumferential direction is further disposed on the periphery of the second opening 72 of the light reflecting cup 70, a stop portion 214 protruding in the radial direction of the heat sink 20 is further disposed outside the notch of the second groove 21 of the heat sink 20, and the stop portion 214 is used for abutting against the top of the first arc-shaped boss 144, so that the distance between one end of the second arc-shaped boss 213 facing the annular mesa 143 and the annular mesa 143 is equal to the sum of the thicknesses of the press-fit portion 721 and the light transmitting plate 15, and the light reflecting cup 70 and the light transmitting plate 15 are pressed between the second arc-shaped boss 213 and.

In the above embodiment, all the first arc-shaped bosses 144 are on the same circumference, all the second arc-shaped bosses 213 are on the same circumference, and the circumference where all the first arc-shaped bosses 144 are located is outside the circumference where all the second arc-shaped bosses 213 are located. The size of the circumference of all the second arc-shaped bosses 213 is larger than or equal to that of the circumference of the annular table 143.

Referring to fig. 11 to 14, the lighting and extinguishing of the down lamp provided in this embodiment are implemented by induction, and therefore, the down lamp further includes: and the inductor 80 is installed on the lamp shell 10, and the inductor 80 is specifically installed on the conical surface frame 14. The inductor 80 is electrically connected to the circuit board 31, and a tip (sensing end) of the inductor 80 faces the outside of the lamp housing 10. This inductor 80 is used for activity objects such as response people or animals (for example, microwave inductor, infrared inductor) to control the switch-on of all LED lamp pearls 32 and external power supply, in order to light all LED lamp pearls 32, perhaps, control the disconnection of all LED lamp pearls 32 and external power supply, in order to extinguish all LED lamp pearls 32. The electric energy can be effectively saved.

In this embodiment, as shown in fig. 14, a through hole 141 for accommodating the inductor 80 is provided on the tapered surface frame 14, and the inductor 80 is inserted into the through hole 141 from the inner side to the outer side of the tapered surface frame 14, and it can be understood that the inductor 80 has a stopper portion (not shown in the figure) for stopping the tail end of the inductor 80 at the port of the through hole 141 at the inner side of the tapered surface frame 14 when the head end of the inductor extends to the outer side of the lamp housing 10. Inductor 80 is secured within conical-shaped face frame 14 by cover 16. Specifically, at least one threaded hole 142 is further formed in the tapered surface frame 14, at least one through hole 161 is formed in the cover plate 16, and the connecting screw 17 passes through the through hole 161 and is screwed in the threaded hole 142, so that the inductor 80 is pressed on the cover plate 16 through the cover plate 16 and the port, located on the inner side of the tapered surface frame 14, of the through hole 141.

To sum up, the down lamp that this embodiment provided fixes the light source module in the tank bottom department of the second recess of radiator, so, can practice thrift installation space to, fix the radiator in the first recess of lamp body, can reduce the overall height of down lamp under the prerequisite that does not change the overall height of lamp body. The mode of installing the down lamp on the ceiling is clamped on the clamping position through the elastic clamping buckle, so that the structure is simple, and the installation is convenient.

The foregoing is a more detailed description of the present application in connection with specific embodiments thereof, and it is not intended that the present application be limited to the specific embodiments thereof. It will be apparent to those skilled in the art from this disclosure that many more simple derivations or substitutions can be made without departing from the inventive concepts herein.

Claims

1. A downlight, comprising:

the light source module is arranged at the bottom of the second groove;

2. The down lamp according to claim 1, wherein the at least two elastic buckles are circumferentially equally arrayed, the clamping positions are clamping holes penetrating through the thickness direction of the connecting piece, the clamping holes penetrate through each other to form clamping round holes penetrating through the thickness direction of the connecting piece, and the size of each clamping round hole is smaller than the size of the circumference where the at least two elastic buckles are located; the at least two elastic buckles abut against the clamping round hole.

3. The down lamp according to claim 2, wherein a plurality of limiting protrusions are arranged on one surface of the heat sink, which faces away from the bottom of the second groove, the limiting protrusions are arranged in a circumferential array, the circumference of a circle where the limiting protrusions are located is concentric with the clamping circular hole in the connecting piece, and the circumference of the circle where the limiting protrusions are located is equal to the size of the clamping circular hole; the clamping round holes are sleeved on the limiting bulges.

4. The downlight of claim 2, wherein the catch assembly further has a connecting portion for connecting the at least two resilient catches and a fixing portion; a boss is further arranged on one surface of the radiator, which is far away from the bottom of the second groove, the fixing part is fixed on the boss, and the connecting part is positioned between the boss and the fixing part; the elasticity buckle includes: the elastic part and the abutting part are arranged, one end of the elastic part is connected with the connecting part, and one end of the abutting part is connected with the other end of the elastic part; the elastic part inclines towards the direction of the radiator, and the abutting part inclines towards the direction away from the connecting part; the abutting part is provided with an abutting position, and after the abutting part penetrates through the clamping round hole, the abutting position abuts against the hole wall of the clamping round hole; the size of the clamping round hole is smaller than the circumference of the circle where the abutting position in each elastic clamping buckle is located.

5. The downlight of claim 4, wherein the resilient catch further comprises: and an introduction portion connected to the abutting portion, the introduction portion being inclined in a direction toward the connecting portion.

6. A down lamp as claimed in claim 4, wherein the boss is provided with at least two blind positioning holes, the connecting portion is provided with at least two positioning posts, and the positioning posts are used for being inserted into the blind positioning holes.

7. A downlight according to claim 1 further comprising: the annular flexible gasket, be equipped with the annular mounting groove on the lamp body, the annular mounting groove is located the notch department of first recess, the annular flexible gasket holding is in the annular mounting groove, just the height of annular flexible gasket is greater than the degree of depth of annular mounting groove.

8. A downlight according to claim 7 further comprising: the light reflecting cup is arranged between the light source module and the bottom of the first groove, and is provided with a first opening facing the light source module, a second opening facing the bottom of the first groove, and a light reflecting surface connected between the first opening and the second opening; the light source module is positioned in the first opening; the lamp housing includes: the light-transmitting plate comprises a conical surface frame and a light-transmitting plate, wherein the bottom of the conical surface frame is provided with a conical bottom opening, and the top of the conical surface frame is provided with a conical top opening; the annular mounting groove is formed at the opening of the conical top; an annular table top protruding inwards is arranged on the periphery of the opening of the conical bottom, and the light-transmitting plate is positioned on the annular table top; the conical surface frame and the light-transmitting plate form the first groove, the light-transmitting plate is the transparent groove bottom, and the conical top opening is a notch of the first groove; at least one first arc-shaped boss is further arranged on the periphery of the annular table top and positioned in the conical surface frame; the radiator is characterized in that at least one second arc-shaped boss is arranged at a second groove notch of the radiator, a crimping part protruding towards the circumferential direction of the second opening is further arranged on the periphery of the second opening, a stopping part protruding towards the radial direction of the radiator is further arranged outside the second groove notch of the radiator, and the stopping part is used for abutting against the top of the first arc-shaped boss, so that the second arc-shaped boss faces towards one end of the annular table board and the distance between the annular table boards is equal to the sum of the thickness of the crimping part and the thickness of the light-transmitting plate.

9. The downlight of claim 8, wherein the light source module comprises: the LED lamp comprises a circuit board, a plurality of LED lamp beads arranged on the circuit board and a power line; the circuit board is fixed at the position, located at the groove bottom of the second groove, of the radiator; the LED lamp beads are all positioned in the first opening; one end of the power line is used for being electrically connected with the circuit board, and the other end of the power line is used for being externally connected with a power supply.

10. A downlight according to claim 9 further comprising: the inductor is arranged on the lamp shell and is electrically connected with the circuit board, and the head end of the inductor faces the outer side of the lamp shell; the inductor is used for inducing people or animals and controlling the connection of the LED lamp beads and an external power supply to light the LED lamp beads or controlling the disconnection of the LED lamp beads and the external power supply to extinguish the LED lamp beads.