Down lamp with adjustable light-emitting angle

Abstract

The down lamp with the adjustable light-emitting angle comprises an installation base body, the installation base body is provided with an installation cavity and an installation hole, the installation hole is located in the outer side wall of the installation base body, and the installation hole communicates with the installation cavity; the appearance of the lamp body is hemispherical, the lamp body is movably arranged in the mounting cavity, the lamp body can rotate around the vertical center line of the lamp body and swing up and down, and the lamp body is provided with a connecting hole; the fastener is provided with a limiting part and a connecting part, the limiting part is arranged at the end of the connecting part, the outer diameter of the limiting part is larger than the hole diameter of the connecting hole, the limiting part is located in the lamp body, the connecting part sequentially penetrates through the connecting hole and the mounting hole, and the connecting hole and the mounting hole are both in clearance fit with the connecting part; and the locking nut is connected to the connecting part in a threaded mode, the locking nut is located outside the mounting base body, and the locking nut abuts against the outer side wall of the mounting base body. The light-emitting angle of the lamp body is diversified, the light-emitting angle of the lamp body can be manually adjusted during installation, various application scenes can be met, and use is more flexible and convenient.

Description

Technical Field

[0001] The present application relates to the technical field of lamps, and in particular to a downlight with adjustable light-emitting angle. Background Art

[0002] Downlight is a kind of lighting fixture embedded in the ceiling and radiates light downwards. This kind of hidden lamp embedded in the ceiling projects all light downwards and belongs to direct light distribution. Different reflectors, lenses, blinds and bulbs can be used to achieve different lighting effects.

[0003] The Chinese utility model patent with publication number CN213333910U discloses a universal downlight, including a lamp frame assembly, including a mounting frame, a gland and an elastic member, the mounting frame cover is arranged on the gland, the elastic member is connected between the mounting frame and the gland, the mounting frame has a first inner spherical arc surface; the lamp body includes a rotating frame and a light source arranged on the rotating frame, the rotating frame abuts against the gland and can rotate relative to the gland, the rotating frame has an outer spherical arc surface, and the outer spherical arc surface of the rotating frame can abut against the spherical arc surface of the mounting frame under the action of the elastic member, when an external force acts, the rotating frame can rotate relative to the gland, and when the external force is eliminated, the rotating frame can remain stationary relative to the gland. The lamp body in the universal downlight can rotate flexibly, can remain stationary when the external force is eliminated, and is easy to use.

[0004] However, although the lamp body in the above universal downlight can be universally rotated, the light emitting angle of the lamp body is still vertically projected downward, and the light emitting angle is relatively single. Utility Model Content

[0005] The embodiment of the present application provides a downlight with adjustable light-emitting angle to solve the problems existing in the related art. The technical solution is as follows:

[0006] The embodiment of the present application provides a downlight with adjustable light-emitting angle, comprising:

[0007] A mounting base, wherein the mounting base has a mounting cavity and a mounting hole, the mounting cavity is hemispherical, the mounting hole is located on the outer side wall of the mounting base, and the mounting hole is connected to the mounting cavity;

[0008] A lamp body, the shape of which is hemispherical, and the lamp body is movably arranged in the installation cavity, so that the lamp body can rotate around its own vertical center line and swing up and down to change the light-emitting angle of the lamp body, and the lamp body has a connecting hole;

[0009] A fastener, the fastener comprising a limiting portion and a connecting portion, the limiting portion being arranged on an end portion of the connecting portion, the outer diameter of the limiting portion being larger than the hole diameter of the connecting hole, the limiting portion being located in the lamp body, the connecting portion being penetrated by the connecting hole and the mounting hole in sequence, and the connecting hole and the mounting hole both being clearance-matched with the connecting portion;

[0010] A locking nut is threadedly connected to the connecting portion, the locking nut is located outside the mounting base, and the locking nut abuts against an outer side wall of the mounting base.

[0011] In one embodiment, the rotation angle range of the lamp body is 0-270°.

[0012] In one embodiment, the swing angle range of the lamp body is 0-90°.

[0013] In one embodiment, the outer side wall of the mounting base is provided with a first limiting protrusion and a second limiting protrusion;

[0014] The connecting portion is provided with a third limiting protrusion, and the third limiting protrusion can be abutted against the first limiting protrusion to limit the clockwise rotation of the lamp body, and the third limiting protrusion can be abutted against the second limiting protrusion to limit the counterclockwise rotation of the lamp body.

[0015] In one embodiment, the connection portion is sleeved with a gasket, the gasket is clamped between the locking nut and the outer side wall of the mounting base, and the third limiting protrusion is provided on the gasket.

[0016] In one embodiment, the fastener has a threading hole, the threading hole passes through the limiting portion and the connecting portion, and the threading hole is used for the wires of the lamp body to pass through.

[0017] In one embodiment, the downlight with adjustable light emission further comprises:

[0018] A locking piece, the locking piece is located outside the mounting base, the locking piece is screwed onto the connecting portion, one end of the locking piece extends into the threading hole and abuts against the wire to press the wire against the hole wall of the threading hole.

[0019] In one embodiment, the lamp body comprises:

[0020] A heat dissipation substrate, wherein the heat dissipation substrate and the mounting cavity are movably matched, the heat dissipation substrate has a mounting groove, the limiting portion is located in the mounting groove, and the opening of the mounting groove faces downward;

[0021] A first circuit board, the first circuit board is electrically connected to an external power source through a wire, and the first circuit board is arranged on the bottom of the installation slot;

[0022] A first LED lamp bead, wherein the first LED lamp bead is disposed on the bottom of the first circuit board, and the first LED lamp bead is electrically connected to the first circuit board;

[0023] A diffusion cover is arranged on the heat dissipation substrate, the diffusion cover covers the opening of the installation groove, and the diffusion cover is arranged opposite to the first LED lamp bead to project the light emitted by the first LED lamp bead to the outside.

[0024] In one embodiment, the lamp body further includes:

[0025] An outer cover, the outer cover is arranged outside the heat dissipation base, the outer cover has a hemispherical shape, the outer cover and the installation cavity can be movably matched, and the top of the outer cover has a light-transmitting portion;

[0026] A second circuit board, the second circuit board is electrically connected to an external power source through a wire, and the second circuit board is arranged on the top of the heat dissipation substrate;

[0027] The second LED lamp bead is arranged on the top of the second circuit board, the second LED lamp bead is electrically connected to the second circuit board, and the second LED lamp bead is arranged opposite to the light-transmitting portion so that the light emitted by the second LED lamp bead can be projected to the outside through the light-transmitting portion.

[0028] In one embodiment, the lamp body further includes:

[0029] A reflective cup, wherein the reflective cup is located in the mounting groove, the upper end of the reflective cup is against the bottom of the first circuit board, and the upper end of the reflective cup is arranged around the first LED lamp bead, and the lower end of the reflective cup is clamped between the lower part of the heat dissipation base and the diffusion cover.

[0030] The advantages or beneficial effects of the above technical solution include at least:

[0031] The downlight of the utility model is based on the fact that the lamp body is movably arranged in the installation cavity, so that the lamp body can rotate around its own vertical center line and swing up and down to change the light-emitting angle of the lamp body. The light-emitting angle of the lamp body is more diversified, and it supports manual adjustment of the light-emitting angle of the lamp body during installation, which can meet various application scenarios and is more flexible and convenient to use. During installation, the locking nut is loosened to disengage the locking nut from the outer wall of the installation base, so that the lamp body can move relative to the installation cavity. After the light-emitting angle of the lamp body is adjusted to the desired angle, the locking nut is tightened to abut against the outer wall of the installation base, so that the lamp body can be locked, so that the lamp body can reliably maintain the desired light-emitting angle. The adjustment operation is simple, the adjustment efficiency is high, and the convenience of use is improved.

[0032] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0034] Figure 1 This is a schematic diagram of the three-dimensional structure of the downlight of the utility model in a first viewing angle;

[0035] Figure 2 It is a schematic diagram of the three-dimensional structure of the downlight of the utility model at a second viewing angle;

[0036] Figure 3 This is a schematic diagram of the three-dimensional structure of the downlight of the utility model at a third viewing angle;

[0037] Figure 4 It is a cross-sectional view of the downlight of the utility model at a fourth viewing angle;

[0038] Figure 5 This is an exploded view of the downlight of the utility model;

[0039] Figure 6 This is an exploded view of the lamp body in the present utility model.

[0040] Reference numerals

[0041] 1. Mounting base; 11. Mounting cavity; 12. Mounting hole; 13. First limiting protrusion; 14. Second limiting protrusion; 2. Lamp body; 21. Heat dissipation base; 211. Mounting groove; 22. First circuit board; 23. Wire; 24. First LED lamp bead; 25. Diffuser cover; 26. Outer cover; 261. Connecting hole; 262. Translucent part; 27. Second circuit board; 28. Second LED lamp bead; 29. ​​Reflective cup; 3. Fastener; 31. Limiting part; 32. Connecting part; 33. Threading hole; 4. Locking nut; 5. Gasket; 51. Third limiting protrusion; 6. Locking piece. DETAILED DESCRIPTION

[0042] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0043] See also Figure 1-Figure 6 , shows a downlight with adjustable light-emitting angle in a preferred embodiment of the utility model, comprising:

[0044] A mounting base 1, wherein the mounting base 1 has a mounting cavity 11 and a mounting hole 12, wherein the mounting cavity 11 is hemispherical, and the mounting hole 12 is located on the outer side wall of the mounting base 1, and the mounting hole 12 is connected to the mounting cavity 11;

[0045] The lamp body 2 is hemispherical in shape and is movably disposed in the mounting cavity 11 so that the lamp body 2 can rotate around its own vertical center line and can swing up and down to change the light-emitting angle of the lamp body 2. The lamp body 2 has a connecting hole 261;

[0046] The fastener 3 comprises a limiting portion 31 and a connecting portion 32. The limiting portion 31 is arranged at the end of the connecting portion 32. The outer diameter of the limiting portion 31 is larger than the aperture of the connecting hole 261. The limiting portion 31 is located in the lamp body 2. The connecting portion 32 is penetrated with the connecting hole 261 and the mounting hole 12 in sequence. The connecting hole 261 and the mounting hole 12 are both clearance-matched with the connecting portion 32 to ensure that the lamp body 2 can move.

[0047] The locking nut 4 is screwed onto the connecting portion 32 . The locking nut 4 is located outside the mounting base 1 , and the locking nut 4 abuts against the outer side wall of the mounting base 1 to lock the lamp body 2 onto the mounting base 1 .

[0048] The downlight of the present invention is based on the fact that the lamp body 2 is movably arranged in the installation cavity 11, so that the lamp body 2 can rotate around its own vertical center line and swing up and down to change the light-emitting angle of the lamp body 2. The light-emitting angle of the lamp body 2 is more diversified, and it supports manual adjustment of the light-emitting angle of the lamp body 2 during installation, which can meet various application scenarios and is more flexible and convenient to use. During installation, the locking nut 4 is loosened to disengage the locking nut 4 from the outer wall of the installation base 1, so that the lamp body 2 can move relative to the installation cavity 11. After the light-emitting angle of the lamp body 2 is adjusted to the desired angle, the locking nut 4 is tightened to abut against the outer wall of the installation base 1, so that the lamp body 2 can be locked, so that the lamp body 2 can reliably maintain the desired light-emitting angle. The adjustment operation is simple, the adjustment efficiency is high, and the convenience of use is improved.

[0049] In one embodiment, the rotation angle range of the lamp body 2 is 0-270°, so as to maximize the clockwise rotation angle and the counterclockwise rotation angle of the lamp body 2 .

[0050] In other embodiments, the rotation angle range of the lamp body 2 is any angle range of 0-280°, 0-290°, 0-360°, etc.

[0051] In one embodiment, the swing angle range of the lamp body 2 is 0-90°, so that the lamp body 2 can be tilted relative to the vertical direction (for example, Figure 3 As shown) or the lamp body 2 can be placed vertically on the mounting base 1, the swing angle range of the lamp body 2 is maximized, and at the same time, the irradiation range of the lamp body 2 is maximized to avoid the swing angle of the lamp body 2 being too large to reduce the irradiation range.

[0052] It can be understood that the lamp body 2 has an original state of swinging upward to be horizontally placed on the mounting base 1 (see Figure 2 ) and swing downward to an upright state vertically placed on the mounting base 1, the lamp body 2 swings and switches between the original state and the upright state.

[0053] See also Figure 1 In one embodiment, the outer side wall of the mounting base 1 is provided with a first limiting protrusion 13 and a second limiting protrusion 14;

[0054] The connecting portion 32 is provided with a third limiting protrusion 51, which can be abutted against the first limiting protrusion 13 to limit the clockwise rotation of the lamp body 2, thereby limiting the clockwise rotation angle of the lamp body 2. The third limiting protrusion 51 can be abutted against the second limiting protrusion 14 to limit the counterclockwise rotation of the lamp body 2, thereby limiting the counterclockwise rotation angle of the lamp body 2.

[0055] See also Figure 1In one embodiment, the connection portion 32 is sleeved with a gasket 5, the gasket 5 is sandwiched between the locking nut 4 and the outer side wall of the mounting base 1, and the third limiting protrusion 51 is provided on the gasket 5. That is, the third limiting protrusion 51 is indirectly provided on the connection portion 32 through the gasket 5 to facilitate the installation of the fastener 3, making the installation of the fastener 3 more convenient. At the same time, the provision of the gasket 5 can strengthen the connection stability between the locking nut 4 and the outer side wall of the mounting base 1.

[0056] In other embodiments, the third limiting protrusion 51 may be directly disposed on the connecting portion 32 .

[0057] See also Figure 1 and Figure 6 In one embodiment, the fastener 3 has a threading hole 33, which passes through the limiting portion 31 and the connecting portion 32. The threading hole 33 is used for the wire 23 of the lamp body 2 to pass through, so that the fastener 3 can not only connect the lamp body 2 and the mounting base 1, but also be used for the wire 23 to pass through, thereby improving the utilization rate of the fastener 3. At the same time, it is unnecessary to open the threading hole 33 in other parts of the mounting base 1 and the lamp body 2, thereby simplifying the threading structure.

[0058] See also Figure 1 , Figure 4 and Figure 5 In one embodiment, the downlight with adjustable light emission further comprises:

[0059] The locking member 6 is located outside the mounting base 1, and the locking member 6 is screwed on the connecting portion 32. One end of the locking member 6 extends into the threading hole 33 and abuts against the wire 23 to press the wire 23 against the hole wall of the threading hole 33, thereby reliably fixing the wire 23 on the fastener 3 to prevent the wire 23 from moving freely and detaching from the first circuit board 22 or the second circuit board 27, and the structural reliability is higher.

[0060] See also Figure 4 and Figure 6 In one embodiment, the lamp body 2 includes:

[0061] The heat dissipation base 21 is movably matched with the mounting cavity 11. The heat dissipation base 21 has a mounting groove 211. The limiting portion 31 is located in the mounting groove 211. The opening of the mounting groove 211 faces downward.

[0062] A first circuit board 22, the first circuit board 22 is electrically connected to an external power source via a wire 23, and the first circuit board 22 is disposed on the bottom of the mounting groove 211;

[0063] A first LED lamp bead 24, which is disposed on the bottom of the first circuit board 22, and is electrically connected to the first circuit board 22;

[0064] The diffusion cover 25 is arranged on the heat dissipation base 21, and the diffusion cover 25 covers the opening of the installation groove 211. The diffusion cover 25 is arranged opposite to the first LED lamp bead 24 to project the light emitted by the first LED lamp bead 24 to the outside. Since the first circuit board 22 is arranged on the bottom of the installation groove 211, the contact area between the first circuit board 22 and the heat dissipation base 21 is maximized, which is conducive to the rapid heat dissipation of the heat generated by the first circuit board 22 and the first LED lamp bead 24 when working, and the heat dissipation is more efficient, ensuring that the first circuit board 22 and the first LED lamp bead 24 can work normally. At the same time, the diffusion cover 25 can evenly distribute the light emitted by the first LED lamp bead 24 to the surrounding environment of the downlight to achieve a better lighting effect.

[0065] See also Figure 4 and Figure 6 In one embodiment, the lamp body 2 further includes:

[0066] The outer cover 26 is disposed outside the heat dissipation substrate 21. The outer cover 26 has a hemispherical shape. The outer cover 26 and the mounting cavity 11 can be movably matched. The top of the outer cover 26 has a light-transmitting portion 262.

[0067] A second circuit board 27, the second circuit board 27 is electrically connected to an external power source through a wire 23, and the second circuit board 27 is disposed on the top of the heat dissipation substrate 21;

[0068] The second LED lamp bead 28 is arranged on the top of the second circuit board 27, the second LED lamp bead 28 is electrically connected to the second circuit board 27, and the second LED lamp bead 28 is arranged opposite to the light-transmitting portion 262, so that the light emitted by the second LED lamp bead 28 can be projected to the outside through the light-transmitting portion 262. In this way, when the lamp body 2 is swung to make the lamp body 2 vertically placed on the mounting base 1, the first LED lamp bead 24 and the second LED lamp bead 28 can be controlled to work at the same time, so that the lamp body 2 can emit light to the left and right sides of the mounting base 1, and one of the first LED lamp bead 24 and the second LED lamp bead 28 can be controlled to work, so that the lamp body 2 can emit light to the left or right side of the mounting base 1, and the light emission direction is more diversified, which can meet the different use needs of users and is more flexible and convenient to use. In addition, based on the second circuit board 27 being arranged on the top of the heat dissipation base 21, the heat dissipation base 21 can be used to quickly dissipate the heat of the second circuit board 27 and the second LED lamp bead 28, and the heat dissipation is more efficient, ensuring that the second circuit board 27 and the second LED lamp bead 28 can work normally.

[0069] In one embodiment, the first circuit board 22 and the second circuit board 27 are both aluminum substrates, which can quickly dissipate the heat of the first LED lamp beads 24 and the second LED lamp beads 28, thereby further improving the heat dissipation efficiency of the downlight.

[0070] In one embodiment, there are multiple first LED lamp beads 24, and the multiple first LED lamp beads 24 are arranged at intervals to improve the lighting effect.

[0071] In one embodiment, among the plurality of first LED lamp beads 24, at least some of the first LED lamp beads 24 are RGB lamp beads, and at least some of the first LED lamp beads 24 are dual-color temperature or multi-color temperature lamp beads. Based on the RGB lamp beads, the RGB lamp beads have 16 million lighting effects, and the controller of the downlight can be used to control the switching of the color and brightness of the RGB lamp beads, so that the downlight has the RGB lighting effect, and then the downlight can emit various dynamic and colorful lights, and the lighting effects are richer and more diverse, and different atmospheres can be created in the space to meet different usage requirements. In addition, based on the fact that at least some of the first LED lamp beads 24 are dual-color temperature or multi-color temperature lamp beads, the controller of the downlight can be used to control the dual-color temperature or multi-color temperature lamp beads to switch to different color temperatures. When only the dual-color temperature or multi-color temperature lamp beads are working, the downlight has different color temperature monochrome effects, and when the dual-color temperature or multi-color temperature lamp beads and the RGB lamp beads are working at the same time, the downlight has different color temperature monochrome effects and mixed lighting effects of RGB lighting effects of different colors and brightness, and the lighting effects are more diverse, which can meet different usage requirements.

[0072] In one embodiment, there are multiple second LED lamp beads 28, and the multiple second LED lamp beads 28 are arranged at intervals to improve the lighting effect.

[0073] In one embodiment, among the plurality of second LED lamp beads 28, at least some of the second LED lamp beads 28 are RGB lamp beads, and at least some of the second LED lamp beads 28 are dual-color temperature or multi-color temperature lamp beads. Based on the RGB lamp beads, the RGB lamp beads have 16 million lighting effects, and the controller of the downlight can be used to control the switching of the color and brightness of the RGB lamp beads, so that the downlight has the RGB lighting effect, and then the downlight can emit various dynamic and colorful lights, and the lighting effects are richer and more diverse, and different atmospheres can be created in the space to meet different usage requirements. In addition, based on at least some of the second LED lamp beads 28 being dual-color temperature or multi-color temperature lamp beads, the controller of the downlight can be used to control the dual-color temperature or multi-color temperature lamp beads to switch to different color temperatures. When only the dual-color temperature or multi-color temperature lamp beads are working, the downlight has different color temperature monochrome effects, and when the dual-color temperature or multi-color temperature lamp beads and the RGB lamp beads are working at the same time, the downlight has different color temperature monochrome effects and mixed lighting effects of RGB lighting effects of different colors and brightness, and the lighting effects are more diverse, which can meet different usage requirements.

[0074] In one embodiment, the controller is electrically connected to the first circuit board 22 and the second circuit board 27 via a wire 23, and the controller is placed outside the downlight to prevent the downlight from shielding the controller's signal.

[0075] In one implementation, the control of the downlight can be specifically achieved through an App, a third-party voice control terminal, a remote controller, and a traditional switch.

[0076] See also Figure 4 and Figure 6 In one embodiment, the lamp body 2 further includes:

[0077] The reflective cup 29 is located in the installation groove 211, the upper end of the reflective cup 29 abuts against the bottom of the first circuit board 22, and the upper end of the reflective cup 29 is arranged around the first LED lamp bead 24, and the lower end of the reflective cup 29 is sandwiched between the lower part of the heat dissipation base 21 and the diffusion cover 25. The reflective cup 29 can effectively reflect and gather light, achieve uniform lighting, and improve the lighting effect. At the same time, based on the upper end of the reflective cup 29 abutting against the bottom of the first circuit board 22 and the lower end of the reflective cup 29 sandwiched between the lower part of the heat dissipation base 21 and the diffusion cover 25, the reflective cup 29 can be installed without nails or glue, making the installation operation of the reflective cup 29 simpler and more efficient.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0079] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0080] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. Downlight with adjustable light angle, characterized in that: include: A mounting base, wherein the mounting base has a mounting cavity and a mounting hole, wherein the mounting hole is located on an outer side wall of the mounting base and communicates with the mounting cavity; A lamp body, the lamp body being movably disposed in the installation cavity so that the lamp body can rotate around its own vertical center line and can swing up and down to change the light-emitting angle of the lamp body, and the lamp body has a connecting hole; A fastener, the fastener comprising a limiting portion and a connecting portion, the limiting portion being arranged on an end portion of the connecting portion, the outer diameter of the limiting portion being larger than the hole diameter of the connecting hole, the limiting portion being located in the lamp body, the connecting portion being penetrated by the connecting hole and the mounting hole in sequence, and the connecting hole and the mounting hole both being clearance-matched with the connecting portion; A locking nut is threadedly connected to the connecting portion, the locking nut is located outside the mounting base, and the locking nut abuts against an outer side wall of the mounting base.

2. The downlight with adjustable light-emitting angle according to claim 1, characterized in that: The rotation angle range of the lamp body is 0-270°.

3. The downlight with adjustable light-emitting angle according to claim 1, characterized in that: The swing angle range of the lamp body is 0-90°.

4. The downlight with adjustable light-emitting angle according to claim 1, characterized in that: The outer side wall of the mounting base is provided with a first limiting protrusion and a second limiting protrusion; The connecting portion is provided with a third limiting protrusion, and the third limiting protrusion can be abutted against the first limiting protrusion to limit the clockwise rotation of the lamp body, and the third limiting protrusion can be abutted against the second limiting protrusion to limit the counterclockwise rotation of the lamp body.

5. The downlight with adjustable light-emitting angle according to claim 4, characterized in that: The connection portion is sleeved with a gasket, the gasket is clamped between the locking nut and the outer side wall of the mounting base, and the third limiting protrusion is arranged on the gasket.

6. The downlight with adjustable light-emitting angle according to claim 1, characterized in that: The fastener has a threading hole, which passes through the limiting portion and the connecting portion, and the wire of the lamp body is passed through the threading hole.

7. The downlight with adjustable light-emitting angle according to claim 6, characterized in that: The downlight with adjustable light emitting angle also includes: A locking piece, the locking piece is located outside the mounting base, the locking piece is screwed onto the connecting portion, one end of the locking piece extends into the threading hole and abuts against the wire to press the wire against the hole wall of the threading hole.

8. The downlight with adjustable light-emitting angle according to claim 1, characterized in that: The lamp body comprises: A heat dissipation substrate, wherein the heat dissipation substrate and the mounting cavity are movably matched, the heat dissipation substrate has a mounting groove, the limiting portion is located in the mounting groove, and the opening of the mounting groove faces downward; A first circuit board, the first circuit board is electrically connected to an external power source through a wire, and the first circuit board is arranged on the bottom of the installation slot; A first LED lamp bead, wherein the first LED lamp bead is disposed on the bottom of the first circuit board, and the first LED lamp bead is electrically connected to the first circuit board; A diffusion cover is arranged on the heat dissipation substrate, the diffusion cover covers the opening of the installation groove, and the diffusion cover is arranged opposite to the first LED lamp bead to project the light emitted by the first LED lamp bead to the outside.

9. The downlight with adjustable light-emitting angle according to claim 8, characterized in that: The lamp body also includes: An outer cover, the outer cover is arranged outside the heat dissipation base, the outer cover and the installation cavity can be movably matched, and the top of the outer cover has a light-transmitting portion; A second circuit board, the second circuit board is electrically connected to an external power source through a wire, and the second circuit board is arranged on the top of the heat dissipation substrate; The second LED lamp bead is arranged on the top of the second circuit board, the second LED lamp bead is electrically connected to the second circuit board, and the second LED lamp bead is arranged opposite to the light-transmitting portion so that the light emitted by the second LED lamp bead can be projected to the outside through the light-transmitting portion.

10. The downlight with adjustable light-emitting angle according to claim 8, characterized in that: The lamp body also includes: A reflective cup, wherein the reflective cup is located in the mounting groove, the upper end of the reflective cup is against the bottom of the first circuit board, and the upper end of the reflective cup is arranged around the first LED lamp bead, and the lower end of the reflective cup is clamped between the lower part of the heat dissipation base and the diffusion cover.

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