Angle-adjustable underground lamp

Abstract

The utility model discloses an angle-adjustable underground lamp which comprises a lamp shell and a lamp cup, a cavity for placing the lamp cup is arranged in the lamp shell, the bottom face of the lamp cup is arranged in an inclined mode, the bottom face of the cavity is matched with the bottom face of the lamp cup, a first wire through hole is formed in the lamp shell, and a second wire through hole is formed in the lamp shell. An electric wire of the lamp cup penetrates through the first wire through hole to be connected with an external circuit, the central axis of the first wire through hole is perpendicular to the bottom face of the cavity, and the central axis of the first wire through hole penetrates through the center of the bottom face of the cavity; a cavity is formed in the lamp cup, the inner wall of the cavity is an arc face, a rotating part matched with the arc face is arranged on the outer surface of the lamp cup, the lamp cup and the lamp shell are rotationally arranged, the lamp cup is detachably provided with an angle adjusting knob, and the angle adjusting knob is rotationally connected with the lamp shell. The angle adjusting knob is used for enabling the lamp cup to rotate relative to the lamp shell; an angle alpha is formed between the vertical face of the irradiation face of the lamp shell and emergent light of the lamp cup, and the angle alpha ranges from 0 degree to 30 degrees.

Description

Technical Field

[0001] The utility model belongs to the processing field of lighting equipment, and particularly relates to a ground buried lamp with an adjustable angle. Background Technique

[0002] A ground buried lamp is a lighting device specifically designed to be installed on or under the ground, usually used in outdoor environments such as gardens, squares, walkways, parking lots, etc. They are mainly used to provide decorative lighting and functional lighting, and have the characteristics of dust prevention and corrosion resistance. Ground buried lamps usually use LED light sources, which have the advantages of energy saving and long service life. Their design takes into account protection and aesthetics. The lamp body is often made of durable materials and is equipped with a transparent cover plate or protective cover to protect the internal light source and electronic components, ensuring safety and facilitating maintenance.

[0003] As disclosed in the patent document "CN201636627U" for the "LED ground buried lamp", it mainly includes a lamp body and a pre-embedded part in which the lamp body is placed. The lamp body is electrically connected to an external circuit through a wire. An aluminum substrate is embedded in the lamp body, and a number of LED lamps are evenly arranged on the aluminum substrate. An upper cover with a light transmission opening is provided on the upper part of the lamp body; the pre-embedded part is a frustum-shaped structure with an open upper part, and the upper edge of the pre-embedded part is fixedly connected to the upper cover of the lamp body through a fastener.

[0004] The lighting angle of the lamp body of this patent is fixed, which is difficult to meet the lighting requirements of the ground buried lamp. When carrying out landscape design or scene layout, the lighting angle cannot be adjusted according to specific needs, resulting in some areas being too bright or too dark. Content of the Utility Model

[0005] The purpose of the utility model is to provide a ground buried lamp with an adjustable angle to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A ground buried lamp with an adjustable angle includes a lamp housing and a lamp cup. A cavity for placing the lamp cup is included inside the lamp housing. The bottom surface of the lamp cup is inclined. The bottom surface of the cavity is adapted to the bottom surface of the lamp cup. The lamp housing is provided with a first wire passing hole. The wire of the lamp cup passes through the first wire passing hole and is connected to an external circuit. The central axis of the first wire passing hole is perpendicular to the bottom surface of the cavity, and the central axis of the first wire passing hole passes through the center of the bottom surface of the cavity;

[0008] The inner wall of the cavity is an arc surface. A rotating part adapted to the arc surface is provided on the outer surface of the lamp cup. The lamp cup is rotatably arranged with the lamp housing. The lamp cup is detachably provided with an angle adjustment knob. The angle adjustment knob is rotatably connected to the lamp housing. The angle adjustment knob is used to make the lamp cup rotate relative to the lamp housing;

[0009] The vertical plane of the irradiation surface of the lamp housing forms an angle α with the outgoing light of the lamp cup, and the angle range of ∠α is 0° - 30°.

[0010] In a further technical solution, the lamp cup is provided with a heat conducting sheet, the heat conducting sheet is installed between the lamp cup and the lamp housing, and the heat conducting sheet is provided with a second wire passing hole for the wire of the lamp cup to pass through.

[0011] In a further technical solution, there is a gap between the inner wall of the lower part of the lamp body housing and the outer wall of the lamp cup, the lamp housing is provided with a light-transmitting glass, and the inner wall of the lamp housing is provided with a clamping groove, and the light-transmitting glass is clamped in the clamping groove.

[0012] In a further technical solution, the lamp housing includes a cylindrical part and a supporting part, the clamping groove is located on the cylindrical part, the cylindrical part is threadedly connected with the supporting part, a first waterproof rubber ring is arranged inside the threaded connection of the cylindrical part and the supporting part, a second waterproof rubber ring is arranged outside the threaded connection of the cylindrical part and the supporting part, a first groove is formed in the outer cylindrical wall of the cylindrical part, and a third waterproof rubber ring is arranged on the outer cylindrical wall of the cylindrical part, and the third waterproof rubber ring is clamped with the first groove.

[0013] In a further technical solution, the upper end of the outer cylindrical wall of the cylindrical part is provided with an external thread, the cylindrical part is provided with a fastening ring, the inner wall of the fastening ring is provided with an internal thread, the fastening ring is threadedly connected with the cylindrical wall, the fastening ring extends outwards with a flange, the flange is fixedly connected with the fastening ring, the height of one side of the flange facing the fastening ring is greater than the height of the side of the flange away from the fastening ring, and the side of the flange facing the fastening ring and the side of the flange away from the fastening ring are continuous.

[0014] In a further technical solution, the connection part of the flange and the fastening ring is designed in an arc shape.

[0015] In a further technical solution, the connection part of the groove wall and the groove bottom of the clamping groove is an irregular clamping groove.

[0016] In a further technical solution, the angle adjustment knob is provided with a threaded cylinder, the lamp cup is rotatably provided with an external bolt, and the external bolt passes through the first wire passing hole, the second wire passing hole and is threadedly connected with the threaded cylinder.

[0017] In a further technical solution, the upper end of the angle adjustment knob passes through the first wire passing hole and abuts against the inner wall of the supporting part;

[0018] At the contact between the outer cylindrical wall of the angle adjustment knob and the inner wall of the supporting part, a second groove and a third groove are successively formed from top to bottom. The angle adjustment knob is successively provided with a fourth waterproof rubber ring and a fifth waterproof rubber ring from top to bottom. The second groove is clamped with the fourth waterproof rubber ring, and the inner wall of the supporting part corresponding to the fourth waterproof rubber ring is set as a conical surface. The third groove is clamped with the fifth waterproof rubber ring;

[0019] At the contact between the outer cylindrical wall of the angle adjustment knob and the outer surface of the supporting part, a fourth groove is formed. The angle adjustment knob is provided with a sixth waterproof rubber ring, and the fourth groove is clamped with the sixth waterproof rubber ring.

[0020] In a further technical solution, the cylindrical part is provided with a fifth groove, and the cylindrical part is provided with a seventh waterproof rubber ring, and the seventh waterproof rubber ring is installed in the fifth groove.

[0021] In a further technical solution, a wire protection cylinder is arranged on the cylindrical part of the angle adjustment knob. The wire protection cylinder passes through the first wire passing hole. A fixing ring is fixedly arranged on the outer cylindrical wall of the wire protection cylinder. The cylindrical part of the angle adjustment knob is threadedly connected with the outer ring wall of the fixing ring, and the wire of the lamp cup passes through the wire protection cylinder.

[0022] In a further technical solution, it further includes a pre-embedded part.

[0023] Advantages of the present utility model:

[0024] In the present utility model, by arranging the bottom surface of the lamp cup to be inclined, and the bottom surface of the cavity being adapted to the bottom surface of the lamp cup, the light emitted by the lamp cup forms an inclined angle relative to the vertical plane of the illumination surface of the lamp housing. At the same time, the rotating part of the lamp cup can rotate relative to the cavity wall, and the central axis of the first wire passing hole passes through the center of the bottom surface of the cavity, so that the lamp cup can rotate relative to the lamp housing with the central axis of the first wire passing hole as the axis, thereby being able to adjust the illumination angle of the buried lamp, and enabling the buried lamp to meet various application scenarios with different requirements for illumination angles.

[0025] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0026] Figure 1 : Schematic diagram of the overall structure of the present utility model.

[0027] Figure 2 : Schematic diagram of assembling the pre-embedded part of the present utility model.

[0028] Figure 3 : Schematic diagram of ∠α of the present utility model.

[0029] Figure 4 : Cross-sectional view of the overall structure of the present utility model.

[0030] Figure 5 : Exploded view of the overall structure of the present utility model.

[0031] Figure 6 : Assembly schematic diagram of the fourth waterproof rubber ring, fifth waterproof rubber ring, sixth waterproof rubber ring and angle adjustment knob of the present utility model.

[0032] Figure 7 : Assembly schematic diagram of the lamp housing support part and the angle adjustment knob of the present utility model.

[0033] Reference numerals: 1, lamp cup; 2, embedded part; 3, lamp housing; 31, cylindrical part; 32, support part; 4, first waterproof rubber ring; 5, second waterproof rubber ring; 6, first wire passing hole; 7, third waterproof rubber ring; 8, light-transmitting glass; 9, clamping groove; 10, fastening ring; 11, flange; 12, angle adjustment knob; 13, threaded cylinder; 14, external bolt; 15, wire protection cylinder; 16, fixing ring; 17, second groove; 18, third groove; 19, fourth waterproof rubber ring; 20, fifth waterproof rubber ring; 21, fourth groove; 22, sixth waterproof rubber ring; 23, seventh waterproof rubber ring; 24, wire opening; 25, heat conducting sheet; 26, rotation scale; 27, scale description Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0035] Please refer to Figure 1-7 ;

[0036] An adjustable-angle in-ground lamp. The in-ground lamp capable of adjusting the angle can illuminate specific targets more precisely, such as landscape elements, architectural details, or art installations, which helps to highlight key features, enhance the visual effect, and at the same time achieve more uniform lighting, avoiding over-bright or over-dark areas in some parts, so as to better meet the lighting requirements. The in-ground lamp of this embodiment can be used in cooperation with the embedded part 2, and users can freely choose the suitable embedded part 2 according to their needs; the in-ground lamp of this embodiment includes a lamp housing 3 and a lamp cup 1. The lamp housing 3 is used to support the lamp cup 1, and the lamp cup 1 is used to emit light for illumination. In the present utility model, the shape of the outer side surface of the lamp housing 3 is not limited. In this embodiment, the lamp housing 3 with the outer side surface of a cylinder is taken as an example for specific description. The outer diameter of the lamp housing 3 is smaller than the inner diameter of the embedded part 2, so that the lamp housing 3 can be installed in the embedded part 2. The lamp housing 3 includes a cavity for placing the lamp cup 1. The lamp cup 1 is placed in the cavity inside the lamp housing 3, and the bottom surface of the lamp cup 1 is inclined. In this embodiment, the angle of the inclined bottom surface of the lamp cup 1 is not limited. The inner bottom surface of the cavity is adapted to the bottom surface of the lamp cup 1, and both are inclined bottom surfaces. Taking the vertical placement as an example for description, usually the bottom surface of the lamp cup 1 is a horizontal plane, and the light in the lamp cup 1 is emitted vertically to the end surface of the lamp housing 3. In this embodiment, since the bottom surface of the lamp cup 1 and the bottom surface of the cavity are adapted to be inclined, an angle α is formed between the vertical plane of the irradiation surface of the lamp housing 3 and the outgoing light of the lamp cup 1;

[0037] A heat-conducting sheet 25 is movably arranged on the bottom surface of the lamp cup 1. The heat-conducting sheet 25 is installed between the bottom surface of the lamp cup 1 and the inner bottom surface of the lamp housing 3. The heat-conducting sheet 25 is provided with a second wire-passing hole for the wire of the lamp cup 1 to pass through, and the lamp housing 3 is provided with a first wire-passing hole 6. The wire of the lamp cup 1 passes through the first wire-passing hole 6 and is connected to the external circuit. Since the bottom surface of the lamp housing 3 is inclined, the central axis of the first wire-passing hole 6 is collinear with the central axis of the lamp cup 1, and the central axis of the first wire-passing hole 6 is perpendicular to the bottom surface of the lamp cup 1, and the central axis of the first wire-passing hole 6 passes through the center of the bottom surface of the lamp cup 1; the inner wall surface of the lower part of the cavity side wall in contact with the lamp cup 1 is an arc surface, and this arc surface is also inclined. Preferably, this arc surface is a spherical surface. The lamp cup 1 includes a rotating part in contact with the inner cavity side surface, and the outer surface of this rotating part is adapted to the spherical surface, so that the lamp cup 1 can rotate relative to the lamp housing 3 with the central axis of the first wire-passing hole 6 as the rotation reference edge, that is, the lamp cup 1 and the lamp housing 3 are rotatably arranged. The lamp cup 1 is also detachably provided with an angle-adjusting knob 12, and the angle-adjusting knob 12 is used to make the lamp cup 1 rotate relative to the lamp housing 3. When the lamp housing 3 is vertically placed, the irradiation surface at the upper end of the lamp housing 3 is a horizontal plane. Let the vertical plane perpendicular to this horizontal plane be the vertical plane. An angle α is formed between the outgoing light of the lamp cup 1 and the vertical plane. The angle range of ∠α is 0° - 30°. In the present utility model, the degree of ∠α is not limited. In this embodiment, the degree of ∠α is preferably 30°. The outgoing angle of 30° belongs to a medium narrow angle and can provide a relatively concentrated light beam.

[0038] Furthermore, in order to enable the user to know the rotation amplitude and direction more clearly when rotating the angle adjustment knob, a rotation scale 26 and a scale description 27 are provided on the bottom surface of the lamp housing 3 near the angle adjustment knob 12. The rotation scale 26 surrounds the angle adjustment knob 12, and the scale descriptions "0" and "30" are relatively arranged on both sides of the angle adjustment knob 12.

[0039] Specifically, when manufacturing the underground lamp of this embodiment, the manufacturer first determines the degree of ∠α between the emitted light of the lamp cup 1 and the vertical plane according to the inclination angle between the bottom surface of the lamp cup 1 of the underground lamp and the horizontal plane. In this embodiment, ∠α is 30°, that is, first, during production, the bottom surface of the lamp cup 1 is inclined 30° relative to the horizontal plane, so that the emitted light of the lamp cup 1 can form an angle of 30° with the vertical plane; when the operator installs the lamp cup 1 and the lamp housing 3, first install the lamp cup 1 into the inner cavity of the lamp housing 3 The lamp cup 1 can rotate along the central axis of the first wire hole 6, and then the angle adjustment knob 12 is preliminarily fixed to the lamp cup 1. At the same time, the angle adjustment button 12 can be rotated relative to the lamp housing 3. The lamp cup 1 is rotated to a specified position relative to the lamp housing 3 through the angle adjustment knob 12. It is worth noting that the angle adjustment knob 12 can also play a role in making the lamp cup 1 firmly located in the inner cavity of the lamp housing 3. At this point, the assembly of the lamp cup 1 and the lamp housing 3 is completed, and the lamp housing 3 and the embedded part 2 selected by the user are assembled.

[0040] Assuming that the angle of the lamp cup 1 of the underground lamp needs to be replaced relative to the lamp housing 3 during use, it can be done by cutting off the power supply of the external circuit. Since the angle adjustment knob 12 is rotatably connected to the lamp housing 3, the angle adjustment knob 12 and the lamp cup 1 are detachably connected, so that by rotating the angle adjustment knob 12, the lamp cup 1 and the lamp housing 3 can rotate relative to each other around the central axis of the angle adjustment knob 12, and the operator can manually turn the angle adjustment knob 12 to rotate the lamp cup 1 to a specified position. In this embodiment, a gap is left between the lamp cup 1 and the inner wall of the lamp housing 3, and the outer wall of the lamp cup 1 and the inner wall of the lamp housing 3 are both spherical in design, so that the lamp cup 1 can be more conveniently rotated relative to the lamp housing 3, and then the underground lamp can be more conveniently adjusted to the required angle.

[0041] In-ground lights are widely used in outdoor lighting and landscape beautification. Since their installation location is usually below the ground, when selecting and using in-ground lights, it is necessary to consider the maintenance of their parts. Therefore, in this embodiment, an in-ground light with separable parts is adopted. However, since in-ground lights are sometimes used in fountains and other places, it is necessary to consider the waterproofing of in-ground lights. Especially for in-ground lights with relatively separated parts, it is more necessary to improve the waterproof performance. The lamp housing 3 includes a cylindrical part 31 and a supporting part 32. The lamp housing 3 mainly bears the gravity of the lamp cup 1 through the supporting part 32. The cylindrical part 31 of the lamp housing 3 is threadedly connected to the supporting part 32. In this embodiment, an external thread is provided on the outer wall of the supporting part 32, and an internal thread is provided on the inner wall of the cylindrical part 31 to enable better threaded connection between the supporting part 32 and the cylindrical part 31; in other embodiments, an internal thread is provided on the supporting part 32, and an external thread is provided on the cylindrical part 31, which is convenient for separating the lamp cup 1 from the supporting part 32 when replacing the lamp cup 1.

[0042] To improve the waterproof performance of the threaded connection between the supporting part 32 and the cylindrical part 31, the lower part of the external thread of the supporting part 32 is set as a first conical surface, and the inner conical surface of the first conical surface faces away from the supporting part 32; the lower part of the internal thread of the cylindrical part 31 is set as a second conical surface, and the inner conical surface of the second conical surface faces close to the supporting part 32, so that the first conical surface, the second conical surface and the outer side surface of the supporting part 32 form a first clamping groove. The supporting part 32 is provided with a first waterproof rubber ring 4, and the first waterproof rubber ring 4 is placed in the first clamping groove. Through the extrusion of the first conical surface, the second conical surface and the outer side surface of the supporting part 32 on the first waterproof rubber ring 4, the first waterproof rubber ring 4 can be used to seal the threaded connection between the supporting part 32 and the cylindrical part 31. At the same time, there is a second waterproof rubber ring 5 outside the threaded connection between the cylindrical part 31 and the supporting part 32. The supporting part 32 is provided with a second clamping groove, and the groove wall of the second clamping groove abuts against the bottom surface of the cylindrical part 31. Through the extrusion of the groove wall of the second clamping groove and the bottom surface of the cylindrical part 31 on the second waterproof rubber ring 5, the second waterproof rubber ring 5 is clamped with the second clamping groove, further improving the waterproof performance of the threaded connection between the supporting part 32 and the cylindrical part 31. It should be noted that when the lamp housing 3 is placed in the embedded part 2, the protruding outer wall of the second waterproof rubber ring 5 generates a damping force on the embedded part 2.

[0043] The supporting part 32 is also provided with a first wire passing hole 6 through which the wire of the lamp cup 1 can pass and be electrically connected to an external circuit. The lamp cup 1 is also provided with a protection component to protect the wire. A circle of third waterproof rubber ring 7 is also arranged on the outer cylindrical wall of the cylindrical part 31. The cylindrical part 31 is provided with a first groove, and the third waterproof rubber ring 7 is clamped with the first groove. When the lamp housing 3 is installed on the embedded part 2, through the extrusion between the inner wall of the embedded part 2 and the outer wall of the lamp housing 3, the third waterproof rubber ring 7 can improve the waterproof performance of the buried lamp. A light-transmitting glass 8 is arranged at the upper end of the cylindrical part 31. In this embodiment, the light-transmitting glass 8 should have a high light transmittance to ensure the maximum utilization efficiency of the light source and be able to withstand the long-term outdoor environment, including sunlight, rain, wind, sand and the pressure of walking on the ground. At the same time, since the buried lamp is installed on the ground and will withstand the heavy pressure of pedestrians or vehicles, the material needs to have sufficient impact resistance. The light-transmitting glass 8 can be tempered glass. A clamping groove 9 is also opened on the inner wall of the cylindrical part 31, so that the light-transmitting glass 8 can be clamped in the clamping groove 9. The connection between the groove wall and the groove bottom of the clamping groove 9 is an irregular clamping groove 9, which is convenient for better accommodating burrs when the light-transmitting glass 8 has burrs, so that the light-transmitting glass 8 can be flatly installed on the cylindrical part 31.

[0044] Specifically, during the assembly of the buried lamp, for the buried lamp of the prior art, the lamp housing 3 is integrally formed, or the lamp housing 3 and the light-transmitting glass 8 are also integrally formed, resulting in more defective products easily appearing during the production process and it is difficult to increase the yield rate. In this embodiment, the light-transmitting glass 8, the cylindrical part 31 and the supporting part 32 are produced separately, effectively improving the production yield rate of qualified products. When the buried lamp is working, the lamp cup 1 will generate heat, and the supporting part 32 in contact with the lamp cup 1 receives the heat first. Assuming that the long-term use of the buried lamp causes the supporting part 32 of the lamp housing 3 in contact with the lamp cup 1 to thermally deform, resulting in a change in the angle of the buried lamp, and it is necessary to replace the supporting part 32 of the lamp housing 3. In the prior art, usually all other parts except the lamp cup 1 need to be replaced, wasting resources. In this embodiment, the operator can first cut off the power supply to the buried lamp in the external circuit, then take out the cylindrical part 31 and the supporting part 32, and separate the cylindrical part 31 and the supporting part 32 by releasing the threaded connection between them. After replacing the to-be-replaced supporting part 32 with a new supporting part 32, then through threaded connection, thread the cylindrical part 31 and the new supporting part 32 together. Then place the lamp cup 1 on the supporting part 32, place the supporting part 32 and the cylindrical part 31 in the embedded part 2, and finally supply power to the buried lamp, which can accurately correct the angle of the buried lamp and reduce resource waste.

[0045] It should be noted that two arc-shaped wire opening 24 are opened at the bottom end of the embedded part 2, so that the wire of the lamp cup 1 can be electrically connected to the external circuit, and at the same time, the arc-shaped wire opening 24 can enhance the safety performance of the buried lamp.

[0046] Furthermore, in order to improve the tight connection between the transparent glass 8 and the inner wall of the cylindrical part 31 and thus enhance the waterproof performance, an external thread is provided at the upper end of the outer cylindrical wall of the cylindrical part 31, that is, an external thread is provided on the outer groove wall of the clamping groove 9. A fastening ring 10 is provided on the cylindrical part 31. An internal thread is provided on the inner ring wall of the fastening ring 10. The fastening ring 10 can be threadedly connected to the inner wall of the cylindrical part 31. There is a flange 11 extending from the outer edge of the fastening ring 10. The flange 11 is fixedly connected or integrally formed with the fastening ring 10. The connection between the flange 11 and the fastening ring 10 is designed to be arc-shaped. In this embodiment, the flange 11 and the fastening ring 10 are integrally formed to further improve the waterproof performance. In other embodiments, the flange 11 and the fastening ring 10 are detachably fixedly connected to facilitate the separation of parts and the replacement of the flange 11 or the fastening ring 10. The height of the side of the flange 11 facing the fastening ring 10 is greater than the height of the side of the flange 11 away from the fastening ring 10. The side of the flange 11 facing the fastening ring 10 and the side of the flange 11 away from the fastening ring 10 are continuously arranged. When rainwater or other liquids fall on the lamp, they will flow around along the inclined surface, thus avoiding water accumulation on the transparent glass, reducing the risk of water entering the buried lamp, and further enhancing the waterproofness of the buried lamp.

[0047] Specifically, the operator places the transparent glass 8 into the clamping groove 9, and then fixes the transparent glass 8 further by tightening the fastening ring 10, reducing the gap between the transparent glass 8 and the cylindrical part 31, and thus enhancing the waterproof performance of the buried lamp. Suppose the upper surface of the transparent glass 8 is scratched and needs to be replaced due to long-term use. The operator can loosen the fastening ring 10, take out the transparent glass 8, replace it with a new transparent glass 8, place the transparent glass 8 on the clamping groove 9, and then tighten the fastening ring 10.

[0048] In this embodiment, the angle adjustment knob 12 is provided with a threaded cylinder 13. The lamp cup 1 is rotatably provided with two external bolts 14. The external bolts 14 can rotate relative to the lamp cup 1. By threading the external bolts 14 onto the threaded cylinder 13, the lamp cup 1 can be threadedly connected to the angle adjustment knob 12. Two external bolts 14 are used to enable the rotation of the angle adjustment knob 12 to drive the lamp cup 1 to rotate relative to the lamp housing 3, avoiding the problem of thread stripping. The upper end of the angle adjustment knob 12 passes through the first wire passing hole 6 and abuts against the inner wall of the supporting portion 32, that is, the upper end of the angle adjustment knob 12 abuts against the inner wall of the supporting portion 32, and the lower end of the angle adjustment knob 12 abuts against the outer side surface of the supporting portion 32; the lamp cup 1 is inclined and arranged inside the lamp housing 3. In order to keep the lamp cup 1 always inside the cavity of the lamp housing 3 and further protect the wire passing through the first wire passing hole 6, the barrel portion of the angle adjustment knob 12 is provided with a wire protection cylinder 15. The wire protection cylinder 15 passes through the first wire passing hole 6. A fixing ring 16 is fixedly arranged on the outer cylinder wall of the wire protection cylinder 15. The fixing ring 16 is sleeved on the wire protection cylinder 15. The barrel portion of the angle adjustment knob 12 is threadedly connected to the outer ring wall of the fixing ring 16. The wire of the lamp cup 1 passing through the wire protection cylinder 15 can protect the wire; in order to further improve the waterproof performance at the abutting portion between the angle adjustment knob 12 and the supporting portion 32, a second groove 17 and a third groove 18 are successively formed from top to bottom at the abutting portion between the outer cylinder wall of the angle adjustment knob 12 and the inner wall of the supporting portion 32. The angle adjustment knob 12 is successively provided with a fourth waterproof rubber ring 19 and a fifth waterproof rubber ring 20 from top to bottom. The second groove 17 is clamped with the fourth waterproof rubber ring 19. The inner wall of the supporting portion 32 corresponding to the fourth waterproof rubber ring 19 is set as a conical surface. The third groove 18 is clamped with the fifth waterproof rubber ring 20; a fourth groove 21 is formed at the abutting portion between the outer cylinder wall of the angle adjustment knob 12 and the outer surface of the supporting portion 32. The angle adjustment knob 12 is provided with a sixth waterproof rubber ring 22. The fourth groove 21 is clamped with the sixth waterproof rubber ring 22; a fifth groove is formed in the cylindrical portion 31. The cylindrical portion 31 is provided with a seventh waterproof rubber ring 23. The seventh waterproof rubber ring 23 is installed in the fifth groove.

[0049] It should be noted that the lamp cup 1 includes a light emitting portion and a lamp protecting portion. The upper end of the inner wall of the light emitting portion is provided with a second clamping groove. The lamp protecting portion is a light transmitting cover. The light transmitting cover is placed on the second clamping groove. The external bolts 14 are installed on the light emitting portion. After the operator removes the lamp protecting portion, the external bolts 14 can be rotated.

[0050] It should be noted that in this embodiment, the second clamping groove is an irregular clamping groove to facilitate the placement of the light transmitting cover on the second clamping groove.

[0051] Specifically, the operator passes the angle adjustment knob 12 through the first wire passing hole 6, threads the angle adjustment knob 12 with the external bolt 14, and at the same time makes the part of the angle adjustment knob 12 inside the first wire passing hole 6 abut against the inner wall of the supporting part 32, and the part of the angle adjustment knob 12 outside the first wire passing hole 6 abut against the outer side surface of the supporting part 32, so that the lamp cup 1, the supporting part 32 and the angle adjustment knob 12 are relatively stable; assuming that the supporting part 32 is deformed due to heat, when the operator replaces the supporting part 32, the operator can first cut off the power supply for the buried lamp in the external circuit, then take out the cylindrical part 31 and the supporting part 32, and by releasing the threaded connection between the cylindrical part 31 and the supporting part 32, the cylindrical part 31 and the supporting part 32 are separated, and then remove the lamp protection part of the lamp cup 1. The operator can rotate the external bolt 14 to separate the lamp cup 1 from the angle adjustment knob 12, then take out the lamp cup 1 from the angle adjustment knob 12, and then separate the lamp cup 1 from the supporting part 32.

[0052] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0053] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An angle-adjustable underground lamp, comprising a lamp housing (3) and a lamp cup (1), wherein the lamp housing (3) comprises a cavity for placing the lamp cup (1), characterized in that: The bottom surface of the lamp cup (1) is inclined, the bottom surface of the cavity is adapted to the bottom surface of the lamp cup (1), the lamp housing (3) is provided with a first wire hole (6), the wire of the lamp cup (1) passes through the first wire hole (6) to be connected to an external circuit, the center axis of the first wire hole (6) is perpendicular to the bottom surface of the cavity, and the center axis of the first wire hole (6) passes through the center of the bottom surface of the cavity; The inner wall of the cavity is an arc surface, the outer surface of the lamp cup (1) is provided with a rotating part adapted to the arc surface, the lamp cup (1) and the lamp housing (3) are rotatably arranged, the lamp cup (1) is detachably provided with an angle adjustment knob (12), the angle adjustment knob (12) is rotatably connected to the lamp housing (3), and the angle adjustment knob (12) is used to rotate the lamp cup (1) relative to the lamp housing (3); The vertical plane of the irradiation surface of the lamp housing (3) forms an angle α with the outgoing light of the lamp cup (1), and the angle range of ∠α is 0°-30°.

2. The angle-adjustable underground lamp according to claim 1, characterized in that: The lamp cup (1) is provided with a heat conducting sheet (25), the heat conducting sheet (25) is installed between the lamp cup (1) and the lamp housing (3), and the heat conducting sheet (25) is provided with a second wire hole for the wire of the lamp cup (1) to pass through.

3. The angle-adjustable underground lamp according to claim 2, characterized in that: A gap is provided between the lower inner wall of the lamp housing (3) and the outer wall of the lamp cup (1); the lamp housing (3) is provided with a light-transmitting glass (8); a snap-fitting groove (9) is provided on the inner wall of the lamp housing (3); and the light-transmitting glass (8) is snap-fitted into the snap-fitting groove (9).

4. The angle-adjustable underground lamp according to claim 3, characterized in that: The lamp housing (3) comprises a cylindrical portion (31) and a supporting portion (32); the engaging groove (9) is located on the cylindrical portion (31); the cylindrical portion (31) and the supporting portion (32) are threadedly connected; a circle of first waterproof rubber ring (4) is built into the threaded connection between the cylindrical portion (31) and the supporting portion (32); a circle of second waterproof rubber ring (5) is externally arranged at the threaded connection between the cylindrical portion (31) and the supporting portion (32); a circle of first groove is provided on the outer wall of the cylindrical portion (31); a circle of third waterproof rubber ring (7) is provided on the outer wall of the cylindrical portion (31); the third waterproof rubber ring (7) is engaged with the first groove.

5. The angle-adjustable underground lamp according to claim 4, characterized in that: The upper end of the outer wall of the cylindrical portion (31) is provided with an external thread, and the cylindrical portion (31) is provided with a fastening ring (10). The inner wall of the fastening ring (10) is provided with an internal thread. The fastening ring (10) is threadedly connected to the cylindrical wall. The fastening ring (10) has a flange (11) extending outward. The flange (11) is fixedly connected to the fastening ring (10). The height of the flange (11) facing the fastening ring (10) is greater than the height of the flange (11) away from the fastening ring (10). The side of the flange (11) facing the fastening ring (10) is continuous with the side of the flange (11) away from the fastening ring (10).

6. The angle-adjustable underground lamp according to claim 5, characterized in that: The connection between the flange (11) and the fastening ring (10) is designed to be arc-shaped.

7. The angle-adjustable underground lamp according to claim 4, characterized in that: The connection between the groove wall and the groove bottom of the clamping groove (9) is an irregular clamping groove (9).

8. The angle-adjustable underground lamp according to claim 4, characterized in that: The angle adjustment knob (12) is provided with a threaded barrel (13), the lamp cup (1) is rotatably provided with an external bolt (14), and the external bolt (14) passes through the second wire hole and the first wire hole (6) and is threadedly connected to the threaded barrel (13).

9. The angle-adjustable underground lamp according to claim 8, characterized in that: The upper end of the angle adjustment knob (12) passes through the first wire hole (6) and abuts against the inner wall of the supporting portion (32); A second groove (17) and a third groove (18) are sequentially provided from top to bottom at the abutment point between the outer tube wall of the angle adjustment knob (12) and the inner wall of the supporting portion (32); a fourth waterproof rubber ring (19) and a fifth waterproof rubber ring (20) are sequentially provided on the angle adjustment knob (12) from top to bottom; the second groove (17) is clamped with the fourth waterproof rubber ring (19); the inner wall of the supporting portion (32) corresponding to the fourth waterproof rubber ring (19) is arranged as a conical surface; and the third groove (18) is clamped with the fifth waterproof rubber ring (20); A fourth groove (21) is provided at the point where the outer tube wall of the angle adjustment knob (12) abuts against the outer surface of the supporting portion (32); the angle adjustment knob (12) is provided with a sixth waterproof rubber ring (22); and the fourth groove (21) is engaged with the sixth waterproof rubber ring (22).

10. The angle-adjustable underground lamp according to claim 1, characterized in that: It also includes embedded parts (2).

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