Lamp end waterproof structure

Abstract

The application provides a lamp end waterproof structure, comprising a lamp shell and an end cover, the lamp shell forms a tubular cavity to accommodate a lamp body, at least one end cover of the lamp shell is provided with an end cover, wherein the end cover is surrounded by an outer ring wall and comprises a first end face arranged towards the lamp shell, a support is mounted along the inner wall of the lamp shell, the support comprises an annular base surface and a support wall, an installation space suitable for the end of the lamp shell is formed between the outer ring wall of the end cover and the support wall, the support wall abuts against the inner side of the lamp shell, the annular base surface is mounted on the first end face, the annular base surface and the first end face are adhesively fixed through a rubber ring, the end of the lamp shell is elastically abutted by the surface of the rubber ring to close the gap between the lamp shell and the end cover. The rubber ring is adhered to the first end face of the lamp shell and the end cover respectively in a way that the fastener is locked and the rubber ring is compressed, so that a better waterproof effect is achieved, and the assembly is simple.

Description

Technical Field

[0001] This invention relates to the field of lighting fixtures, and more particularly to a waterproof structure for the end of a lighting fixture. Background Technology

[0002] In the lighting field, LED luminaires are increasingly used in residential and commercial lighting due to their high light output efficiency and good light focusing performance. For environments with high humidity, such as walk-in cold storage, parking lots, and gas stations, the waterproof performance of luminaires is of paramount importance. Most existing luminaire research focuses on side waterproofing during installation with the fixture, while the technical methods for waterproofing the ends of the luminaire are currently limited. End waterproofing typically relies on adhesive sealing, but this method involves many steps and has low production efficiency. Alternatively, silicone gaskets are used for sealing, but these structures inevitably leave gaps, resulting in poor sealing and failing to meet IP65 or higher waterproofing requirements.

[0003] Therefore, those skilled in the art are dedicated to developing a lamp end structure with good waterproof performance, excellent waterproof sealing performance, and improved assemblability. Summary of the Invention

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is the poor waterproof effect of the lamp end and the low production efficiency.

[0005] To achieve the above objectives, the present invention provides a waterproof end structure for a lamp, including a lamp housing and an end cap. The lamp housing forms a tubular cavity to accommodate the lamp body. At least one end of the lamp housing is covered with an end cap, wherein the end cap is surrounded by an outer ring wall and includes a first end face facing the lamp housing. A bracket is installed along the inner wall of the lamp housing. The bracket includes an annular base surface and a support wall. An installation space adapted to the end of the lamp housing is formed between the outer ring wall and the support wall of the end cap. The support wall abuts against the inner side of the lamp housing. The annular base surface is installed on the first end face. The annular base surface and the first end face are bonded and fixed by a rubber ring. The end of the lamp housing is elastically abutted by the surface of the rubber ring to seal the gap between the lamp housing and the end cap.

[0006] Furthermore, positioning ribs are formed alternately on the first end face and the outer ring wall, the inner side of the annular base surface of the bracket is abutted by the positioning ribs, and the rubber ring is disposed between the positioning ribs and the outer ring wall.

[0007] Furthermore, a guide surface is formed on the outer side of the support wall of the bracket, and the guide surface is inclined to the inner side of the bracket.

[0008] Furthermore, the first fastener passes through the back side of the first end face and is fixedly connected to the end of the lamp housing.

[0009] Furthermore, the end cap includes a second end face facing away from the lamp housing. The second end face is annular and has a cap. The inner side of the second end face extends through an inner ring wall to connect to the back side of the first end face. A gasket is sandwiched between the cap and the second end face, and the outer periphery of the gasket abuts against the inner side of the outer ring wall.

[0010] Furthermore, a waterproof rib is formed protruding on the second end face. The waterproof rib forms a closed curve and connects with the washer. The waterproof rib has a pointed tip so that it can sink into the washer when under pressure.

[0011] Furthermore, a positioning block is provided on the inner ring wall, and the inner side of the washer is abutted by the positioning block.

[0012] Furthermore, the second fastener passes through the cover and is fixedly connected to the second end face, and the washer is pressed between the second end face and the cover.

[0013] Furthermore, mounting holes are provided on both sides of the second end face near the outer ring wall. The junction of the outer ring wall and the second end face protrudes adjacent to the mounting holes to form a limiting step. The outer side of the washer is correspondingly formed with a mounting opening suitable for the second fastener to pass through. After the second fastener passes through the cover and the washer, it is fixed through the mounting holes and presses the washer tightly onto the second end face.

[0014] Furthermore, a through hole is provided on the first end face for the wire to pass through, and an outlet for the lead wire is provided on the cover, forming a wiring cavity between the cover and the first end face.

[0015] The waterproof end structure of the lamp provided by the present invention has the advantage of easy assembly. For the end that does not need to be opened, the rubber ring is pressed by fastening the fasteners so that the rubber ring is attached to the first end face of the lamp housing and the end cover respectively, achieving a good waterproof effect. For the end that needs to be opened for wiring, the rib on the end cover is locked into the washer by fastening the fasteners to achieve a waterproof effect.

[0016] The following will further explain the concept, specific structure, and technical effects of the present invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural diagram (longitudinal) of a specific embodiment of the waterproof structure at the end of the lamp of the present invention.

[0018] Figure 2 This is a cross-sectional schematic diagram (horizontal) of a specific embodiment of the waterproof structure at the end of the lamp of the present invention.

[0019] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0020] Figure 4This is a schematic diagram of the end cap on the first end face side of the waterproof structure at the end of the lamp of the present invention.

[0021] Figure 5 This is a schematic diagram of the end cap on the second end face side of the waterproof structure at the end of the lamp of the present invention.

[0022] Figure 6 This is a schematic diagram of the second end face and gasket installation of the waterproof structure at the end of the lamp of the present invention.

[0023] Figure 7 This is an exploded structural diagram of the waterproof structure at the end of the lamp of the present invention.

[0024] in:

[0025] 1. Lamp housing; 2. End cap; 21. First end face; 211. Positioning rib; 212. Mounting groove; 213. Through hole; 22. Outer ring wall; 23. Second end face; 231. Inner ring wall; 232. Waterproof rib; 233. Positioning block; 234. Mounting hole; 235. Limiting step; 24. Wiring cavity; 3. Bracket; 31. Annular base surface; 32. Support wall; 4. Rubber ring; 5. First fastener; 6. Cover; 61. Outlet; 7. Washer; 71. Mounting port; 8. Second fastener. Detailed Implementation

[0026] like Figures 1 to 7 The diagram shows a waterproof end structure for a lamp provided by the present invention, comprising a lamp housing 1 and an end cap 2. The lamp housing 1 forms a tubular cavity to accommodate the lamp body. At least one end of the lamp housing 1 is covered with an end cap 2. The end cap 2 is surrounded by an outer ring wall 22 and includes a first end face 21 facing the lamp housing 1. A bracket 3 is installed along the inner wall of the lamp housing 1. The bracket 3 includes an annular base surface 31 and a support wall 32. An installation space adapted to the end of the lamp housing 1 is formed between the outer ring wall 22 and the support wall 32 of the end cap 2. The support wall 32 abuts against the inner side of the lamp housing 1. The annular base surface 31 is installed on the first end face 21. The annular base surface 31 and the first end face 21 are bonded and fixed by a rubber ring 4. The end of the lamp housing 1 is elastically abutted by the surface of the rubber ring 4 to seal the gap between the lamp housing 1 and the end cap 2.

[0027] Here, the first end face 21 is a planar structure. Based on the specific component composition described above, a waterproof structure for fixing the part is formed on the first end face 21 side of the end cap 2. The lamp housing 1 is generally a plastic shell, which is formed by a process such as two-color extrusion. It is generally thin-walled and therefore not very strong. The bracket 3 supports the lamp housing 1 to prevent relative movement between the plastic shell and the rubber ring 4 caused by compression, thus preventing water leakage. The rubber ring 4 can be made of waterproof double-sided adhesive. Waterproof double-sided adhesive is hydrophobic, soft, and has strong adhesion. It elastically abuts against the end of the lamp housing 1 to cover the end of the lamp housing 1, filling the uneven pits of the first end face 21 and firmly adhering it together.

[0028] Positioning ribs 211 are formed alternately on the first end face 21 and the outer ring wall 22. The inner side of the annular base surface 31 of the bracket 3 is abutted by the positioning ribs 211, and the rubber ring 4 is disposed between the positioning ribs 211 and the outer ring wall 22. A guide surface is formed on the outer side of the support wall 32 of the bracket 3. The guide surface is inclined to the inner side of the bracket 3. In this way, when the lamp holder is installed relative to the lamp housing 1, the guide surface can facilitate the positioning of the lamp housing 1 and make it fit tightly against the outer side of the support arm. During installation, the first fastener 5 passes through the back side of the first end face 21 and fixes the end of the lamp housing 1. The first fastener 5 is preferably a screw.

[0029] Therefore, when installing the end cap 2 at the end of the lamp housing 1, the end cap 2, the rubber ring 4, and the bracket 3 need to be assembled into a single component first. This component is then installed into the lamp housing 1, and the rubber ring 4 is tightened by screws, ensuring that the rubber ring 4 fits against both the lamp housing 1 and the first end face 21. This achieves an IP65 or higher waterproof rating. The outer diameter of the rubber ring 4 must exceed the outer diameter of the lamp housing 1, ensuring that the end of the lamp housing 1 is fully in contact with the rubber ring 4, thus improving the waterproof effect. Figure 1 and Figure 2 As shown. In contrast, ordinary silicone waterproofing cannot reach the IP65 waterproof rating. Silicone material is relatively hard and has no adhesive properties, so it cannot fill the uneven areas of the plastic lamp housing 1. Under pressure, it may cause relative displacement between the silicone surface and the lamp housing 1, resulting in water leakage.

[0030] In addition, the first end face 21 is provided with a pair of mounting grooves 212 that are adapted to the end of the circuit board, and the openings of the pair of mounting grooves 212 are arranged opposite each other on both sides of the first end face 21. After the end cover 2 is installed, it facilitates the positioning and installation of the circuit board inside the lamp body.

[0031] In an embodiment of the present invention, the end cap 2 also forms a waterproof structure for the opening portion on the other side.

[0032] A second end face 23 is provided on the side of the end cap 2 facing away from the lamp housing 1. The second end face 23 is annular, and a cover 6 is provided on the second end face 23. The inner side of the second end face 23 extends and connects to the back side of the first end face 21 through the inner ring wall 231. A washer 7 is sandwiched between the cover 6 and the second end face 23, and the outer periphery of the washer 7 abuts against the inner side of the outer ring wall 22. The washer 7 is preferably a silicone washer 7. A waterproof rib 232 is formed protruding on the second end face 23. The waterproof rib 232 forms a closed curve and connects with the washer 7. The waterproof rib 232 has a pointed tip, which can be a conical structure. When the waterproof rib 232 is under pressure, it can sink into the washer 7 through its pointed tip. Figure 3 and Figure 5 As shown.

[0033] The second fastener 8 passes through the cover 6 and is fixedly connected to the second end face 23. The second fastener 8 is preferably a screw. As the screw is tightened, the washer 7 is pressed between the second end face 23 and the cover 6.

[0034] In the aforementioned waterproof structure for the openable parts, the cover 6 requires a certain degree of rigidity and can be made of metal or a non-deformable plastic component. The cover 6 can be opened, and after wiring is completed, a waterproof rib 232 is inserted into the silicone gasket 7 to achieve waterproofing. Therefore, during installation, if... Figure 7 As shown, the gasket 7 is first fixed to the cover 6, and then the cover 6 is fixed to the end cap 2 by screws. Only in this way can the entire waterproof rib 232 be embedded in the silicone gasket 7, thereby achieving a waterproof rating of IP65 or higher.

[0035] A positioning block 233 is provided on the inner ring wall 231. After the cover 6 is installed, the inner side of the washer 7 is abutted by the positioning block 233. The positioning block 233 has a protrusion that matches the shape of the inner side of the washer 7. The washer 7 is positioned by supporting it from the inside by the protrusions on both sides. The second end face 23 has mounting holes 234 on both sides near the outer ring wall 22. The junction of the outer ring wall 22 and the second end face 23 protrudes adjacent to the mounting holes 234 to form a limiting step 235. The outer side of the washer 7 has a corresponding mounting opening 71 suitable for the second fastener 8 to pass through. After the second fastener 8 passes through the cover 6 and the washer 7, it is fixed through the mounting hole 234 and presses the washer 7 onto the second end face 23. The limiting step 235 is set to be at the same height as or slightly lower than the gasket 7. After the cover 6 is installed, the limiting step 235 abuts against both ends of the cover 6. As the second fastener 8 is tightened, the cover 6 presses the gasket 7 tightly, while preventing the gasket 7 from being excessively deformed and affecting the waterproof effect.

[0036] As an optional implementation, at least one end of the lamp housing 1 can be used for wiring to pass through. A through hole 213 for wiring to pass through is provided on the first end face 21, and an outlet 61 for connecting the lead wire is provided on the cover 6. A wiring cavity 24 is formed between the cover 6 and the first end face 21. A waterproof flexible tube is sleeved on the outside of the wiring, and the waterproof flexible tube and the outlet 61 are further sealed to achieve waterproofing. As for the waterproof sealing structure between the tubular component and the hole, those skilled in the art can achieve it by using reasonable means based on the existing technology, which is not within the scope of protection of this invention and will not be described in detail here.

[0037] In summary, the waterproof structure at the end of the lamp fixture of the present invention provides a fixed waterproof part and an openable waterproof part. For the end that does not need to be opened, fasteners are used to lock and compress the rubber ring, ensuring that the rubber ring fits against the first end face of the lamp housing and the end cover respectively, achieving a good waterproof effect. For the end that needs to be opened for wiring, fasteners are used to lock the rib on the end cover into the washer, achieving a waterproof effect. The above structure has the advantages of simple assembly and good waterproof effect.

[0038] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A waterproof end structure for a lamp, comprising a lamp housing (1) and an end cap (2), wherein the lamp housing (1) forms a tubular cavity to accommodate the lamp body, and at least one end of the lamp housing (1) is covered with an end cap (2), characterized in that, The end cap (2) is surrounded by an outer ring wall (22) and includes a first end face (21) facing the lamp housing (1). A bracket (3) is installed along the inner wall of the lamp housing (1). The bracket (3) includes an annular base surface (31) and a support wall (32). An installation space for the end of the lamp housing (1) is formed between the outer ring wall (22) and the support wall (32) of the end cap (2). The support wall (32) abuts against the inner side of the lamp housing (1). The annular base surface (31) is installed on the first end face (21). The annular base surface (31) and the first end face (21) are bonded and fixed by a rubber ring (4). The rubber ring (4) is a double-sided waterproof adhesive. Positioning ribs (211) are formed alternately on the first end face (21) and the outer ring wall (22). The inner side of the annular base surface (31) of the bracket (3) is abutted by the positioning ribs (211). The rubber ring (4) is set between the positioning ribs (211) and the outer ring wall (22). The end of the lamp housing (1) is elastically abutted by the surface of the rubber ring (4) to close the gap between the lamp housing (1) and the end cap (2). The first fastener (5) passes through the back side of the first end face (21) and is fixedly connected to the end of the lamp housing (1). A guide surface is formed on the outer side of the support wall (32) of the bracket (3). The guide surface is inclined to the inner side of the bracket (3).

2. The waterproof structure at the end of the lamp as described in claim 1, characterized in that, The end cap (2) includes a second end face (23) facing away from the lamp housing (1). The second end face (23) is annular and a cover (6) is provided on the second end face (23). The inner side of the second end face (23) extends to connect the back side of the first end face (21) through the inner ring wall (231). A gasket (7) is sandwiched between the cover (6) and the second end face (23). The outer periphery of the gasket (7) abuts against the inner side of the outer ring wall (22).

3. The waterproof structure at the end of the lamp as described in claim 2, characterized in that, A waterproof rib (232) is formed on the second end face (23). The waterproof rib (232) forms a closed curve and is connected to the washer (7). The waterproof rib (232) has a pointed tip so that it can be inserted into the washer (7) when under pressure.

4. The waterproof structure at the end of the lamp as described in claim 2, characterized in that, A positioning block (233) is provided on the inner ring wall (231), and the inner side of the washer (7) is abutted by the positioning block (233).

5. The waterproof structure at the end of the lamp as described in claim 2, characterized in that, The second fastener (8) passes through the cover (6) and is fixedly connected to the second end face (23), and the washer (7) is pressed between the second end face (23) and the cover (6).

6. The waterproof structure at the end of the lamp as described in claim 2, characterized in that, The second end face (23) has mounting holes (234) on both sides near the outer ring wall (22). The junction of the outer ring wall (22) and the second end face (23) protrudes adjacent to the mounting holes (234) to form a limiting step (235). The outer side of the washer (7) is correspondingly formed with a mounting opening (71) suitable for the second fastener (8) to pass through. After the second fastener (8) passes through the cover (6) and the washer (7), it is fixed through the mounting holes (234) and presses the washer (7) onto the second end face (23).

7. The waterproof structure at the end of the lamp as described in claim 2, characterized in that, A through hole (213) is provided on the first end face (21) for wires to pass through, and an outlet (61) for wires to be connected is provided on the cover (6), forming a wiring cavity (24) between the cover (6) and the first end face (21).

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