Waterproof down lamp and lighting equipment

Abstract

The utility model provides a waterproof down lamp and lighting equipment. The waterproof down lamp is used for being installed on a building body and comprises a lamp body, a waterproof lampshade, a waterproof installation base and an annular sealing ring. A light outlet is formed in the lamp body; the waterproof lampshade is arranged at the light outlet and is in sealing connection with the lamp body, so that the lamp body and the waterproof lampshade jointly form a first sealing cavity; the waterproof mounting base is used for being mounted and fixed in a building main body, a waterproof mounting groove is formed in the waterproof mounting base, a first threaded abutting surface is formed on the peripheral wall of the lamp body, a second threaded abutting surface matched with the first threaded abutting surface is formed on the inner wall of the waterproof mounting groove, and the lamp body is in threaded connection with the waterproof mounting base; the annular sealing ring is arranged at a notch of the waterproof mounting groove, and the two side faces of the annular sealing ring abut against the waterproof mounting base and the lamp body in an interference mode respectively, so that the waterproof mounting base and the lamp body jointly form a second sealing cavity. The waterproof down lamp not only can reduce the maintenance cost, but also has better use convenience.

Description

Technical Field

[0001] The present disclosure relates to the technical field of lighting equipment, and in particular to a waterproof downlight and lighting equipment. Background Art

[0002] Downlights occupy a crucial position in modern lighting design. Their compact size and high brightness make them particularly suitable for confined spaces like bathrooms and restrooms. For aesthetic reasons and overall integrity, downlights are often embedded within the main structure of a building. However, due to the humid environment of bathrooms and restrooms, moisture and air from the outside can seep into the building's interior. If this seeps into the downlight, it can cause a short circuit and damage, significantly increasing maintenance costs.

[0003] Existing technologies, such as patent CN220817692U, propose a waterproof rotating spotlight, which includes a lens frame and a fixing frame. The lens frame is installed inside the fixing frame. The matching part between the lens frame and the fixing frame is a waterproof concentric arc structure. The lens frame is provided with a back cover. The matching part between the back cover and the fixing frame is a waterproof concentric arc structure. The lens frame can rotate relative to the fixing frame. The above-mentioned waterproof rotating spotlight adopts a small gap waterproof concentric arc structure at the matching part, which effectively improves the waterproof performance of the structure while ensuring rotation, ensuring that the lamp can still operate normally in a humid environment or when encountering rain, and protecting the internal circuit from moisture.

[0004] However, the lens frame, fixing frame and back cover of the above-mentioned waterproof rotating spotlight are easily corroded after long-term contact with external water and humid air inside the building body, resulting in a significant reduction in the waterproof performance of the above-mentioned waterproof rotating spotlight, greatly increasing the probability of external water and humid air inside the building body penetrating into the spotlight, thereby greatly increasing the maintenance cost of the above-mentioned rotating spotlight; at the same time, the above-mentioned waterproof rotating spotlight is connected to the building body through a spring mounting plate, making the installation and disassembly of the above-mentioned waterproof rotating spotlight and the building body more difficult. Utility Model Content

[0005] The purpose of the present disclosure is to overcome the deficiencies in the prior art and to provide a waterproof downlight and lighting device that can not only reduce maintenance costs but also improve ease of use.

[0006] The purpose of this disclosure is achieved through the following technical solutions:

[0007] A waterproof downlight for installation on a building main body, comprising:

[0008] A lamp body, wherein the lamp body is formed with a light outlet;

[0009] a waterproof lampshade, which is disposed at the light outlet and is sealed to the lamp body, so that the lamp body and the waterproof lampshade together form a first sealed cavity;

[0010] The waterproof downlight also includes:

[0011] A waterproof mounting base, the waterproof mounting base being used to be installed and fixed in a building main body, the waterproof mounting base being formed with a waterproof mounting groove, the outer peripheral wall of the lamp body being formed with a first threaded abutment surface, the inner wall of the waterproof mounting groove being formed with a second threaded abutment surface adapted to the first threaded abutment surface, the lamp body being threadably connected to the waterproof mounting base;

[0012] An annular sealing ring is arranged at the notch of the waterproof mounting groove, and two side surfaces of the annular sealing ring are respectively in interference fit with the waterproof mounting base and the lamp body, so that the waterproof mounting base and the lamp body jointly form a second sealed cavity.

[0013] In one embodiment, an annular flange is protruded from the outer peripheral wall of one end of the lamp body adjacent to the light outlet, and the annular flange is arranged opposite to the top of the peripheral wall of the waterproof mounting base, and the two side surfaces of the annular sealing ring are respectively in interference fit with the bottom of the annular flange and the top of the peripheral wall of the waterproof mounting base.

[0014] In one embodiment, an annular limiting groove is formed on the top of the peripheral wall of the waterproof mounting base, and the annular sealing ring is arranged in the annular limiting groove. The two side surfaces of the annular sealing ring are respectively in interference fit with the inner wall of the annular limiting groove and the bottom of the annular flange.

[0015] In one embodiment, the inner wall of the annular limit groove is formed with a first smooth abutment surface, the bottom of the annular flange is formed with a second smooth abutment surface, and the two side surfaces of the annular sealing ring are in interference abutment with the first smooth abutment surface and the second smooth abutment surface respectively.

[0016] In one embodiment, the waterproof mounting base includes a base body and an anchor, the base body is installed and fixed in the building body, the waterproof mounting groove and the annular limit groove are both formed in the base body, the fixed end of the anchor is fixedly connected to the bottom of the base body, and the anchoring end of the anchor is fixed in the building body.

[0017] In one embodiment, the anchoring end of the anchor is hook-shaped.

[0018] In one embodiment, the lamp body includes a lamp tube, a heat sink and a light-emitting component, the annular flange is protruded from the outer peripheral wall of the lamp tube, the first end of the lamp tube is sealed and fixedly connected to the heat sink to jointly form a receiving groove connected to the light outlet, the light-emitting component is arranged in the receiving groove, the light-emitting end of the light-emitting component is arranged toward the light outlet, and the fixed end of the light-emitting component is installed and fixed on the heat sink.

[0019] In one embodiment, the gap between the waterproof lampshade and the lamp tube and the gap between the lamp tube and the heat sink are filled with waterproof sealant.

[0020] In one embodiment, the annular sealing ring is made of foamed silicone.

[0021] In one embodiment, the base body and the anchor are an integrally formed structure.

[0022] In one embodiment, the waterproof downlight further includes a fastener, a positioning hole is formed at the fixed end of the light-emitting component, a threaded hole corresponding to the positioning hole is formed at one end of the heat dissipation component located at the accommodating groove, and the fastener is passed through the positioning hole and screwed to the threaded hole.

[0023] A lighting device comprises the waterproof downlight described in any one of the above embodiments.

[0024] Compared with the prior art, the present disclosure has at least the following advantages:

[0025] 1. The above-mentioned waterproof downlight, since the waterproof mounting base is used to be installed and fixed in the main body of the building, the waterproof mounting base is formed with a waterproof mounting groove, the outer peripheral wall of the lamp body is formed with a first threaded abutment surface, and the inner wall of the waterproof mounting groove is formed with a second threaded abutment surface adapted to the first threaded abutment surface, the lamp body is threadedly connected to the waterproof mounting base, so that when the lamp body needs to be installed on the main body of the building, the user only needs to rotate the lamp body along the first preset direction relative to the waterproof mounting base to install and fix the lamp body in the waterproof mounting base, so that the lamp body can be installed and fixed on the main body of the building; and when the lamp body needs to be removed from the main body of the building, the user only needs to rotate the lamp body along the second preset direction relative to the waterproof mounting base to remove the lamp body from the waterproof mounting base, so that the difficulty of installing and disassembling the above-mentioned waterproof downlight is greatly reduced, thereby greatly improving the convenience of use of the above-mentioned waterproof downlight.

[0026] 2. Since the annular sealing ring is arranged at the notch of the waterproof mounting groove, the two side surfaces of the annular sealing ring are respectively in interference fit with the waterproof mounting base and the lamp body, so that the waterproof mounting base and the lamp body form a second sealed cavity together, preventing the humid gas and external water in the interior and external environment of the building body from entering the second sealed cavity through the gap between the waterproof mounting base and the lamp body, effectively avoiding the corrosion and aging phenomenon caused by the outer wall of the lamp body being in contact with humid gas and external water for a long time, greatly improving the waterproof ability of the above-mentioned waterproof downlight, and thus effectively reducing the maintenance cost of the above-mentioned waterproof downlight. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is a schematic structural diagram of a waterproof downlight according to an embodiment;

[0029] Figure 2 for Figure 1 The internal structure diagram of the waterproof downlight shown;

[0030] Figure 3 for Figure 2 A partially enlarged schematic diagram of a waterproof downlight is shown;

[0031] Figure 4 for Figure 1 The schematic diagram of the partial structure of the waterproof downlight shown;

[0032] Figure 5 for Figure 4 A partial enlarged schematic diagram of a waterproof downlight is shown;

[0033] Figure 6 for Figure 1 The schematic diagram of the partial internal structure of the waterproof downlight is shown. DETAILED DESCRIPTION

[0034] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0038] like Figures 1 to 6 As shown, a waterproof downlight 10 of an embodiment is used to be installed on a building body, and includes a lamp body 100, a waterproof lampshade 200, a waterproof mounting base 400 and an annular sealing ring 500; the lamp body 100 is formed with a light outlet 110; the waterproof lampshade 200 is arranged at the light outlet 110 and is sealed with the lamp body 100, so that the lamp body 100 and the waterproof lampshade 200 jointly form a first sealed cavity 300, so as to prevent the lamp body 100 from short-circuiting due to external water or humid gas entering the lamp body 100 through the gap between the lamp body 100 and the waterproof lampshade 200, thereby improving the waterproof ability of the above-mentioned waterproof downlight 10, thereby greatly reducing the maintenance cost of the above-mentioned waterproof downlight 10.

[0039] like Figures 1 to 6As shown, further, the waterproof mounting base 400 is used to be installed and fixed in the main body of the building. The waterproof mounting base 400 is formed with a waterproof mounting groove 410. The outer peripheral wall of the lamp body 100 is formed with a first threaded abutment surface 411. The inner wall of the waterproof mounting groove 410 is formed with a second threaded abutment surface 120 adapted to the first threaded abutment surface 411. The lamp body 100 is threadedly connected to the waterproof mounting base 400, so that when the lamp body 100 needs to be installed on the main body of the building, the user only needs to move the lamp body 100 along the first preset direction relative to the waterproof mounting base 400. By rotating the waterproof mounting base 400, the lamp body 100 can be installed and fixed in the waterproof mounting base 400, so that the lamp body 100 can be installed and fixed on the main building. When the lamp body 100 needs to be removed from the main building, the lamp body 100 only needs to be rotated relative to the waterproof mounting base 400 along the second preset direction to remove the lamp body 100 from the waterproof mounting base 400, which greatly reduces the difficulty of installing and disassembling the above-mentioned waterproof downlight 10, thereby greatly improving the convenience of use of the above-mentioned waterproof downlight 10.

[0040] like Figures 1 to 6 As shown, further, the annular sealing ring 500 is arranged at the notch of the waterproof mounting groove 410, and the two side surfaces of the annular sealing ring 500 are respectively in interference fit with the waterproof mounting base 400 and the lamp body 100, so that the waterproof mounting base 400 and the lamp body 100 jointly form a second sealed cavity 600, preventing the humid gas inside the building body and the external environment and the external water from entering the second sealed cavity 600 through the gap between the waterproof mounting base 400 and the lamp body 100, effectively avoiding the corrosion and aging phenomenon caused by the outer wall of the lamp body 100 being in contact with the humid gas and the external water for a long time, greatly improving the waterproof ability of the above-mentioned waterproof downlight 10, and thus effectively reducing the maintenance cost of the above-mentioned waterproof downlight 10.

[0041] In this embodiment, when the lamp body 100 needs to be installed on the main building, the user only needs to rotate the lamp body 100 along the first preset direction relative to the waterproof mounting base 400 to install and fix the lamp body 100 in the waterproof mounting base 400, so that the lamp body 100 can be installed and fixed on the main building; and when the lamp body 100 needs to be removed from the main building, the user only needs to rotate the lamp body 100 along the second preset direction relative to the waterproof mounting base 400 to remove the lamp body 100 from the waterproof mounting base 400.

[0042] Moreover, the waterproof downlight 10 can effectively prevent external water and humid gas from entering the second sealed cavity 600 through the gap between the lamp body 100 and the waterproof lampshade 200 through the annular sealing ring 500, avoiding corrosion and aging of the outer wall of the lamp body 100 due to long-term contact with humid gas and external water, thereby greatly improving the waterproof ability of the waterproof downlight 10.

[0043] The above-mentioned waterproof downlight 10, since the waterproof mounting base 400 is used to be installed and fixed in the main body of the building, the waterproof mounting base 400 is formed with a waterproof mounting groove 410, the outer peripheral wall of the lamp body 100 is formed with a first threaded abutment surface 411, and the inner wall of the waterproof mounting groove 410 is formed with a second threaded abutment surface 120 adapted to the first threaded abutment surface 411. The lamp body 100 is threadedly connected to the waterproof mounting base 400, so that when the lamp body 100 needs to be installed on the main body of the building, the user only needs to move the lamp body 100 relative to the first preset direction. By rotating the waterproof mounting base 400, the lamp body 100 can be installed and fixed in the waterproof mounting base 400, so that the lamp body 100 can be installed and fixed on the building body; and when the lamp body 100 needs to be removed from the building body, the lamp body 100 only needs to be rotated relative to the waterproof mounting base 400 along the second preset direction to remove the lamp body 100 from the waterproof mounting base 400, so that the difficulty of installing and disassembling the above-mentioned waterproof downlight 10 is greatly reduced, thereby greatly improving the convenience of use of the above-mentioned waterproof downlight 10.

[0044] Since the annular sealing ring 500 is arranged at the notch of the waterproof mounting groove 410, the two side surfaces of the annular sealing ring 500 are respectively in interference fit with the waterproof mounting base 400 and the lamp body 100, so that the waterproof mounting base 400 and the lamp body 100 jointly form a second sealed cavity 600, preventing the humid gas and external water in the interior and external environment of the building body from entering the second sealed cavity 600 through the gap between the waterproof mounting base 400 and the lamp body 100, effectively avoiding the corrosion and aging phenomenon caused by the outer wall of the lamp body 100 being in contact with humid gas and external water for a long time, greatly improving the waterproof ability of the above-mentioned waterproof downlight 10, and thus effectively reducing the maintenance cost of the above-mentioned waterproof downlight 10.

[0045] like Figures 2 to 5 As shown, in one embodiment, an annular flange 130 is convexly provided on the outer peripheral wall of one end of the lamp body 100 adjacent to the light outlet 110, and the annular flange 130 is arranged opposite to the top of the peripheral wall of the waterproof mounting base 400. The two side surfaces of the annular sealing ring 500 are respectively in interference fit with the bottom of the annular flange 130 and the top of the peripheral wall of the waterproof mounting base 400, so as to increase the contact area between the annular sealing ring 500 and the lamp body 100, improve the waterproof ability of the waterproof downlight 10, and avoid corrosion and aging due to long-term contact of the outer peripheral wall of the lamp body 100 with humid gas and external water.

[0046] like Figures 2 to 5As shown, in one embodiment, an annular limiting groove 420 is formed on the top of the peripheral wall of the waterproof mounting base 400, and the annular sealing ring 500 is arranged in the annular limiting groove 420. The two side surfaces of the annular sealing ring 500 are respectively in interference fit with the inner wall of the annular limiting groove 420 and the bottom of the annular flange 130, so as to increase the contact area between the annular sealing ring 500 and the waterproof mounting base 400, thereby further improving the waterproof ability of the waterproof downlight 10.

[0047] like Figures 2 to 5 As shown, in one embodiment, the inner wall of the annular limiting groove 420 is formed with a first smooth abutting surface (not shown in the figure), and the bottom of the annular flange 130 is formed with a second smooth abutting surface (not shown in the figure), and the two side surfaces of the annular sealing ring 500 are respectively in interference abutment with the first smooth abutting surface and the second smooth abutting surface to increase the abutting area between the annular sealing ring 500 and the inner wall of the annular limiting groove 420 and the bottom of the annular flange 130, so that the annular sealing ring 500 can fit tightly with the inner wall of the annular limiting groove 420 and the bottom of the annular flange 130, further improving the waterproof ability of the waterproof downlight 10.

[0048] like Figures 1 to 2 As shown, in one embodiment, the waterproof mounting base 400 includes a base body 430 and an anchor 440. The base body 430 is installed and fixed in the main body of the building. The waterproof mounting groove 410 and the annular limiting groove 420 are both formed in the base body 430. The fixed end of the anchor 440 is fixedly connected to the bottom of the base body 430. The anchoring end of the anchor 440 is fixed in the main body of the building, so that the waterproof mounting base 400 can be firmly fixed to the main body of the building through the anchor 440, thereby improving the stability of the waterproof downlight 10.

[0049] like Figures 1 to 2 As shown, in one embodiment, the anchoring end of the anchor 440 is in a hook shape to improve the anchoring ability of the anchor 440, so that the waterproof installation base 400 can be more securely fixed to the building body.

[0050] Such as 2 and Figure 6 As shown, in one embodiment, the lamp body 100 includes a lamp tube 140, a heat sink 150 and a light-emitting member 160, the annular flange 130 is protruded from the outer peripheral wall of the lamp tube 140, the first end of the lamp tube 140 is sealed and fixedly connected to the heat sink 150 to jointly form a receiving groove 170 connected to the light outlet 110, the light outlet 110 is formed at the second end of the lamp tube 140, the second end of the lamp tube 140 is sealed and fixedly connected to the waterproof lampshade 200, the light-emitting member 160 is arranged in the receiving groove 170, the light-emitting end of the light-emitting member 160 is arranged toward the light outlet 110, and the fixed end of the light-emitting member 160 is installed and fixed on the heat sink 150 so that the light-emitting end of the light-emitting member 160 can emit light from the light outlet 110.

[0051] Such as 2 and Figure 6 As shown, in one embodiment, the gap between the waterproof lampshade 200 and the lamp tube 140 and the gap between the lamp tube 140 and the heat sink 150 are filled with waterproof sealant to improve the sealing of the first sealed cavity 300, effectively preventing external water and moist gas from entering the first sealed cavity 300 through the gap between the waterproof lampshade 200 and the lamp tube 140 and the gap between the lamp tube 140 and the heat sink 150, thereby greatly improving the waterproof ability of the lamp body 100.

[0052] Such as 2 and Figure 5 As shown, in one embodiment, the annular sealing ring 500 is made of foamed silicone to improve the sealing performance of the second sealing cavity 600.

[0053] Such as 1 and Figure 2 As shown, in one embodiment, the base body 430 and the anchor 440 are integrally formed to improve the structural compactness of the waterproof base.

[0054] Such as 2 and Figure 6 As shown, in one embodiment, the waterproof downlight 10 further includes a fastener, a positioning hole 141 is formed at the fixed end of the light-emitting component 160, and a threaded hole 151 corresponding to the positioning hole 141 is formed at one end of the heat sink 150 located in the accommodating groove 170. The fastener is passed through the positioning hole 141 and screwed into the threaded hole 151, so that the light-emitting component 160 can be firmly fixed on the heat sink 150; at the same time, the heat sink 150 can maintain the temperature of the light-emitting component 160 within the normal operating temperature range, thereby improving the stability of the waterproof downlight 10.

[0055] The present disclosure further provides a lighting device, comprising the waterproof downlight 10 described in any one of the above embodiments.

[0056] Compared with the prior art, the present disclosure has at least the following advantages:

[0057] 1. The above-mentioned lighting device, since the waterproof mounting base 400 is used to be installed and fixed in the main body of the building, the waterproof mounting base 400 is formed with a waterproof mounting groove 410, the outer peripheral wall of the lamp body 100 is formed with a first threaded abutment surface 411, and the inner wall of the waterproof mounting groove 410 is formed with a second threaded abutment surface 120 adapted to the first threaded abutment surface 411. The lamp body 100 is threadedly connected to the waterproof mounting base 400, so that when the lamp body 100 needs to be installed on the main body of the building, the user only needs to move the lamp body 100 relative to the first preset direction. By rotating the waterproof mounting base 400, the lamp body 100 can be installed and fixed in the waterproof mounting base 400, so that the lamp body 100 can be installed and fixed on the building body; and when the lamp body 100 needs to be removed from the building body, the lamp body 100 only needs to be rotated relative to the waterproof mounting base 400 along the second preset direction to remove the lamp body 100 from the waterproof mounting base 400, so that the difficulty of installing and disassembling the above-mentioned waterproof downlight 10 is greatly reduced, thereby greatly improving the convenience of use of the above-mentioned waterproof downlight 10.

[0058] 2. Since the annular sealing ring 500 is arranged at the notch of the waterproof mounting groove 410, the two side surfaces of the annular sealing ring 500 are respectively in interference fit with the waterproof mounting base 400 and the lamp body 100, so that the waterproof mounting base 400 and the lamp body 100 jointly form a second sealed cavity 600, preventing the humid gas and external water in the interior and external environment of the building body from entering the second sealed cavity 600 through the gap between the waterproof mounting base 400 and the lamp body 100, effectively avoiding the corrosion and aging of the outer wall of the lamp body 100 due to long-term contact with humid gas and external water, greatly improving the waterproof ability of the above-mentioned waterproof downlight 10, and thus effectively reducing the maintenance cost of the above-mentioned waterproof downlight 10.

[0059] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosed patent shall be determined by the appended claims.

Claims

1. A waterproof downlight for installation on a building, comprising: A lamp body, wherein the lamp body is formed with a light outlet; a waterproof lampshade, which is disposed at the light outlet and is sealed to the lamp body, so that the lamp body and the waterproof lampshade together form a first sealed cavity; Characterized in that, the waterproof downlight further comprises: A waterproof mounting base, the waterproof mounting base being used to be installed and fixed in a building main body, the waterproof mounting base being formed with a waterproof mounting groove, the outer peripheral wall of the lamp body being formed with a first threaded abutment surface, the inner wall of the waterproof mounting groove being formed with a second threaded abutment surface adapted to the first threaded abutment surface, the lamp body being threadably connected to the waterproof mounting base; An annular sealing ring is arranged at the notch of the waterproof mounting groove, and two side surfaces of the annular sealing ring are respectively in interference fit with the waterproof mounting base and the lamp body, so that the waterproof mounting base and the lamp body jointly form a second sealed cavity.

2. The waterproof downlight according to claim 1, characterized in that: An annular flange is protruding from the outer peripheral wall of one end of the lamp body adjacent to the light outlet, and the annular flange is arranged opposite to the top of the peripheral wall of the waterproof mounting base. The two side surfaces of the annular sealing ring are respectively in interference fit with the bottom of the annular flange and the top of the peripheral wall of the waterproof mounting base.

3. The waterproof downlight according to claim 2, characterized in that: An annular limiting groove is formed on the top of the peripheral wall of the waterproof mounting base, and the annular sealing ring is arranged in the annular limiting groove. The two side surfaces of the annular sealing ring are respectively in interference contact with the inner wall of the annular limiting groove and the bottom of the annular flange.

4. The waterproof downlight according to claim 3, characterized in that: The inner wall of the annular limiting groove is formed with a first smooth abutment surface, the bottom of the annular flange is formed with a second smooth abutment surface, and the two side surfaces of the annular sealing ring are in interference abutment with the first smooth abutment surface and the second smooth abutment surface respectively.

5. The waterproof downlight according to claim 3, characterized in that: The waterproof mounting base includes a base body and an anchor. The base body is installed and fixed in the building body. The waterproof mounting groove and the annular limit groove are both formed in the base body. The fixed end of the anchor is fixedly connected to the bottom of the base body, and the anchoring end of the anchor is fixed in the building body.

6. The waterproof downlight according to claim 5, characterized in that: The anchoring end of the anchoring piece is in a hook shape.

7. The waterproof downlight according to claim 6, characterized in that: The lamp body includes a lamp tube, a heat sink and a light-emitting component. The annular flange is protruded from the outer peripheral wall of the lamp tube. The first end of the lamp tube is sealed and fixedly connected to the heat sink to jointly form a receiving groove connected to the light outlet. The light-emitting component is arranged in the receiving groove, the light-emitting end of the light-emitting component is arranged toward the light outlet, and the fixed end of the light-emitting component is installed and fixed on the heat sink.

8. The waterproof downlight according to claim 7, characterized in that: The gap between the waterproof lampshade and the lamp barrel and the gap between the lamp barrel and the heat sink are both filled with waterproof sealant; and / or, The annular sealing ring is made of foamed silicone; and / or, The base body and the anchoring piece are an integrally formed structure.

9. The waterproof downlight according to claim 7, characterized in that: The waterproof downlight also includes a fastener, a positioning hole is formed at the fixed end of the light-emitting element, and a threaded hole corresponding to the positioning hole is formed at one end of the heat dissipation element located at the accommodating groove. The fastener is passed through the positioning hole and screwed to the threaded hole.

10. A lighting device, characterized in that: A waterproof downlight comprising the waterproof downlight according to any one of claims 1 to 9.

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