An underwater indicator light

Abstract

The application relates to an underwater indicating lamp and belongs to the underwater equipment field, which comprises a shell, a light source and a light-transmitting cover. The shell comprises a light source part and a mounting part. A light source containing cavity in the shape of a flared mouth is arranged in the light source part, and the end with a large inner diameter of the light source containing cavity is provided with a light outlet. A wire channel is arranged in the mounting part and is communicated with the end with a small inner diameter of the light source containing cavity, and the end of the wire channel away from the light source containing cavity is provided with a wire outlet. The light source is arranged in the light source containing cavity, and the wire of the light source is led out from the wire outlet through the wire channel. The light-transmitting cover is arranged in the light source part, the outer peripheral wall of the light-transmitting cover is in interference fit with the inner wall of the light source containing cavity, a first annular groove is arranged on the outer peripheral wall of the light-transmitting cover, a first sealing ring is arranged in the first annular groove, the first sealing ring protrudes from the first annular groove, and the first sealing ring is pressed tightly by the inner wall of the light source containing cavity when the light-transmitting cover is inserted into the light source containing cavity. The application has the effects that the structure of the indicating lamp is simpler, the indicating lamp is convenient to assemble, and the indicating lamp is reliable in sealing.

Description

Technical Field

[0001] This application relates to the field of underwater equipment, and in particular to an underwater indicator light. Background Technology

[0002] Underwater indicator lights are lighting devices specifically designed for underwater environments, primarily used in underwater equipment such as submersible propulsion systems and underwater robots. Due to the special nature of the environment, underwater indicator lights are constantly submerged, enduring water pressure and current impacts, requiring excellent sealing. Otherwise, water ingress can easily damage the light body, rendering it unable to provide illumination. The main sealing points for underwater indicator lights are between the indicator light's housing and the lamp cover, and at the mounting holes between the indicator light and the underwater equipment. Existing underwater indicator lights typically use threaded connections and washers to achieve connections and seals at these two locations.

[0003] However, the sealing structure of threads and washers makes the shape and structure of each part of the indicator light relatively complex. Furthermore, the threaded structure will gradually loosen under the impact of water flow, which can easily lead to insufficient sealing. The numerous screwing operations are time-consuming and labor-intensive, resulting in low production and assembly efficiency of underwater indicator lights. Utility Model Content

[0004] To achieve a simpler structure for underwater indicator lights that are easier to assemble and more reliably sealed, this application provides an underwater indicator light.

[0005] The underwater indicator light provided in this application adopts the following technical solution:

[0006] An underwater indicator light, characterized in that it comprises:

[0007] The housing includes a light source section and a mounting section;

[0008] The light source section has a light source receiving cavity, which is flared, and a light outlet is opened at the end with the larger inner diameter of the light source receiving cavity; the mounting section has a wiring cavity, which is connected to the end with the smaller inner diameter of the light source receiving cavity, and a wiring outlet is opened at the end of the wiring cavity away from the light source receiving cavity.

[0009] A light source is disposed in the light source receiving cavity, the light source emits light toward the light outlet, and the wire of the light source passes through the wiring cavity and exits from the light outlet;

[0010] A light-transmitting cover is disposed inside the light source section. The outer peripheral wall of the light-transmitting cover is interference-fitted with the inner wall of the light source receiving cavity. A first annular groove is formed on the outer peripheral wall of the light-transmitting cover. A first sealing ring is disposed in the first annular groove. The first sealing ring protrudes from the first annular groove. When the light-transmitting cover is inserted into the light source receiving cavity, the first sealing ring is pressed tightly by the inner wall of the light source receiving cavity.

[0011] By adopting the above-mentioned solution, using a combination structure of a flared light source housing cavity and an interference fit with the light-transmitting cover, the traditional multi-part threaded gasket locking and sealing structure of underwater lights is simplified to a single insertion that completes the sealing of the light body itself. The initial insertion stage utilizes the flared guide, reducing assembly difficulty, assembly time, and improving assembly efficiency. The physical flared structure naturally creates a gradient pressure on the sealing surface, which, combined with the radial compression of the first annular groove, forms a double seal between the light-transmitting cover and the indicator light housing, combining soft and hard pressure seals. This generates fluid resistance superior to the planar seal of threaded gaskets and eliminates the risk of thread corrosion. Furthermore, when the light-transmitting cover is subjected to external water flow impact, the flared cavity and the interference fit structure of the light-transmitting cover can connect more tightly under impact, increasing sealing performance.

[0012] Preferably, the flaring angle of the inner wall of the light source receiving cavity is less than 30°.

[0013] By adopting the above scheme, a quasi-linear pressure gradient can be formed when the flaring angle is less than 30°, ensuring the sealing between the light-transmitting cover and the outer shell. The small-angle flaring achieves progressive pressing guidance, making assembly more accurate and labor-saving, and installation more convenient.

[0014] Preferably, the flaring angle of the inner wall of the light source receiving cavity is 5-15°, and the protrusion of the first sealing ring from the first annular groove is 0.3-0.5mm.

[0015] By adopting the above scheme, a non-linear relationship can be formed between the flaring angle and the sealing ring compression rate. More optimally, when the flaring angle is between 8-12°, the best balance between the sealing ring compression rate and assembly resistance can be achieved. Through the dynamic matching of three parameters—the protrusion height of the first sealing ring, the flaring angle, and the interference fit—progressive compression can be generated during the assembly process. During the final compression, a non-linearly increasing sealing specific pressure can be formed, thereby improving the water tightness compared to conventional structures.

[0016] Preferably, the junction of the light source and the mounting part has a stepped surface protruding from the mounting part, and the light source has a second annular groove in the middle of the stepped surface. A second sealing ring is provided in the second annular groove, and the second sealing ring protrudes from the second annular groove. When the mounting part is connected to the external mounting hole, the second sealing ring is pressed towards the second annular groove.

[0017] By adopting the above solution, a second annular groove is created in the middle of the stepped surface, and the installation position of the second sealing ring is positioned through this groove, making assembly more convenient. The second sealing ring is installed in the second annular groove, with the sealing ring protruding from it. When the underwater indicator light is installed in the corresponding hole of the underwater equipment and the mounting part is inserted into the mounting hole for fixation, the surfaces around the second annular groove and the mounting hole of the underwater equipment simultaneously compress the second sealing ring. The contact surface between the second sealing ring and the underwater equipment forms a sealing surface. The deformation of the second sealing ring further creates a sealing surface with the second annular groove, achieving a coordinated seal. Furthermore, when the underwater indicator light moves from its mounting position to the underwater equipment due to external force, the cooperation between the second sealing ring and the second annular groove can generate non-linear sealing force compensation, thereby maintaining the seal at that location.

[0018] Preferably, the cross-section of the second annular groove is trapezoidal, and the bottom width of the second annular groove is greater than the groove opening width.

[0019] By adopting the above scheme, the second annular groove is designed with a trapezoidal cross section that is wider at the top and narrower at the bottom, which can form a pressure storage cavity. When the external water pressure increases, the pressure is transmitted to the bottom of the groove through the outer shell, pushing the second sealing ring to press against the contact surface for a second time. Under pressure fluctuation conditions such as wave impact, the space of the second annular groove can buffer the deformation of the sealing ring and avoid fatigue failure of the second sealing ring.

[0020] Preferably, the mounting part has a third annular groove at the connection with the light source part, and a third sealing ring is provided in the third annular groove. The third sealing ring protrudes from the third annular groove, and when the mounting part is connected to the external mounting hole, the third sealing ring is pressed towards the third annular groove.

[0021] By adopting the above solution, a seal is formed between the mounting part and the mounting hole of the underwater equipment through the third sealing ring. The third sealing ring and the second sealing ring cooperate to form two seals between the underwater indicator light and the underwater equipment, ensuring sealing performance. Furthermore, the third sealing ring and the second sealing ring cooperate to form a series pressure buffer layer. The third sealing ring can bear most of the impact force, while the second sealing ring performs fine force balancing. This structure improves the uniformity of the force distribution at the sealing interface and avoids sealing ring extrusion failure caused by single-point overload.

[0022] Preferably, the device further includes a filler, which is disposed within the wiring cavity and adhered to the inner wall of the wiring cavity, and the filler encapsulates the conductor of the light source.

[0023] By adopting the above solution, the filler is bonded to the inner wall of the wiring cavity to form a continuous sealing layer, which can not only increase the sealing performance of the outer shell and form a third layer of sealing protection, but also reduce the movement of the light source wire in the wiring cavity and improve the reliability of the underwater indicator light.

[0024] Preferably, it further includes a mounting nut, which is threaded onto the mounting portion, and the inner edge of the radial section of the mounting nut is arc-shaped.

[0025] By adopting the above scheme, the mounting nut is designed with a radially curved, notched structure. When installing the underwater indicator light onto the underwater equipment, the mounting part of the underwater indicator light is inserted into the mounting hole of the underwater equipment. The mounting nut then secures the entire underwater indicator light to the underwater equipment from within. The notch in the mounting nut allows the middle of the light source's wire to pass directly through, enabling the mounting nut to be fitted onto the light source's wire. The notch design allows the nut to be fitted onto the wire at any position, simplifying the installation process and making the installation of the underwater indicator light more convenient.

[0026] Preferably, the central angle of the radial cross-section of the mounting nut is 300-340°.

[0027] By adopting the above solution and through the design of the optimal arc-shaped notch size, this mounting nut solves the inconvenience of traditional installation methods, improves installation efficiency and maintenance convenience, while maintaining sufficient sealing and structural stability.

[0028] In summary, this application has the following beneficial effects:

[0029] 1. Simple structure and easy assembly. It adopts a combination structure of flared light source receiving cavity and light-transmitting cover with interference fit, which simplifies the traditional multi-part threaded gasket locking and sealing structure of underwater lights. The lamp body is sealed with a single insertion. The flared guide at the initial insertion reduces the difficulty of assembly, reduces the assembly time, and improves the assembly efficiency.

[0030] 2. Reliable sealing: The flared light source housing cavity and the light-transmitting cover are interference-fitted, and the physical flaring structure forms a gradient pressure on the sealing surface. Combined with the radial compression of the first annular groove, the combination of soft and hard sealing creates a double seal, generating fluid resistance superior to the planar seal of threaded gaskets, eliminating the risk of thread corrosion, and ensuring a tighter connection under external water flow impact, thus increasing sealing performance. A second annular groove is formed on the stepped surface at the connection between the light source and the mounting part to position the second sealing ring. During installation, the second sealing ring, the contact surface of the underwater equipment, and the second annular groove form a sealing surface, generating a synergistic seal. When subjected to external force movement, nonlinear sealing force compensation can be generated to maintain the sealing performance. A third annular groove is formed in the mounting part to house the third sealing ring, which, together with the second sealing ring, forms a double seal to ensure sealing performance and forms a series pressure buffer layer, making the stress distribution on the sealing interface more uniform and avoiding single-point overload leading to sealing ring extrusion failure. A filler is set in the wiring cavity and bonded to the inner wall to wrap the light source wire, increasing the sealing performance inside the shell, reducing the movement of the wire in the wiring cavity, and improving reliability.

[0031] 3. Optimize parameters to improve performance. When the flare inclination angle of the inner wall of the light source housing is less than 30°, a quasi-linear pressure gradient is formed to ensure sealing. The flare angle of 5-15° and the protrusion of the first sealing ring of 0.3-0.5mm are dynamically matched to generate progressive compression and non-linear growth of sealing specific pressure, thereby improving water tightness.

[0032] 4. The second annular groove has a trapezoidal cross-section, with the bottom width being greater than the groove opening width, forming a pressure storage cavity. When the external water pressure increases, it pushes the second sealing ring to tighten again. Under pressure fluctuation conditions, it buffers the deformation of the sealing ring and avoids fatigue failure. The radial cross-section of the mounting nut is arc-shaped, and the notch design allows the nut to be inserted into the wire at any position, simplifying the installation steps, improving installation efficiency and maintenance convenience, while maintaining sufficient sealing and structural stability. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural schematic diagram of an underwater indicator light according to an embodiment of this application;

[0034] Figure 2 This is a side view of an underwater indicator light according to an embodiment of this application;

[0035] Figure 3 This is a cross-sectional structural diagram of an underwater indicator light according to an embodiment of this application;

[0036] Figure 4 This is a three-dimensional structural diagram of the housing of an underwater indicator light according to an embodiment of this application;

[0037] Figure 5 This is a side view of the housing of an underwater indicator light according to an embodiment of this application;

[0038] Figure 6 This is a cross-sectional structural diagram of the housing of an underwater indicator light according to an embodiment of this application;

[0039] Figure 7 This is a schematic cross-sectional view of an underwater indicator light after installation, according to an embodiment of this application.

[0040] Figure 8 This is a schematic diagram of the structure of a mounting nut for an underwater indicator light according to an embodiment of this application.

[0041] Explanation of reference numerals in the attached drawings: 1. Outer shell; 11. Light source section; 12. Light source receiving cavity; 13. Second annular groove; 14. Mounting section; 15. Wiring cavity; 16. Third annular groove; 17. Light outlet; 18. Wiring outlet; 2. Light-transmitting cover; 21. First annular groove; 3. Light source; 4. Mounting nut; 5. First sealing ring; 6. Second sealing ring; 7. Third sealing ring; 8. Filler. Detailed Implementation

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0047] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0048] Embodiment 1 of this application discloses an underwater indicator light. (Refer to...) Figures 1 to 3 It includes a housing 1, a light source 3, a light-transmitting cover 2, and a mounting nut 4.

[0049] Among them, such as Figures 2 to 3 As shown, the outer casing 1 is symmetrically cylindrical in shape. The outer casing 1 includes two parts: an integrally formed light source part 11 and a mounting part 14. The light source part 11 is used to install the light source 3 and emit light outwards, while the mounting part 14 is used to install the indicator light body on the underwater equipment.

[0050] like Figure 3 as well as Figure 4 As shown, a light source receiving cavity 12 is formed within the light source section 11 to accommodate the light source 3 and the light-transmitting cover 2 covering the light source 3. The light source receiving cavity 12 is generally flared, with a light outlet 17 formed at the end with the larger inner diameter. In some embodiments of this application, the light source receiving cavity 12 may be partly a square cylindrical cavity to facilitate the installation of a square LED light source, and partly a flared cylindrical cavity to facilitate the installation of the light-transmitting cover 2.

[0051] like Figure 3 as well as Figure 7As shown, the light-transmitting cover 2 is a nearly hemispherical transparent cover, hollow inside, and its shape matches the flared shape of the light source receiving cavity 12 of the light source section 11. The light-transmitting cover 2 is disposed inside the light source receiving cavity 12 of the light source section 11, and the outer peripheral wall of the light-transmitting cover 2 is press-fitted with the inner wall of the light source receiving cavity 12 to form a hard seal between the light-transmitting cover 2 and the inner wall of the light source receiving cavity 12. In some embodiments of this application, the light-transmitting cover 2 is entirely embedded in the light source receiving cavity 12 of the light source section 11, and the top surface may slightly protrude from the light source section 11 so that the indicator light can be observed from the side. A first annular groove 21 is provided on the outer peripheral wall of the light-transmitting cover 2, and the position of the first annular groove 21 is close to the lower edge of the light-transmitting cover 2. A first sealing ring 5 is provided in the first annular groove 21. Preferably, the first sealing ring 5 is an O-ring, so that during assembly, the first sealing ring 5 and the first annular groove 21 can have a certain amount of compression deformation space. In some other embodiments of this application, the first sealing ring 5 can also be a U-shaped, YD-shaped, or other type of sealing ring. The first sealing ring 5 protrudes from the first annular groove 21. When the light-transmitting cover 2 is inserted into the light source receiving cavity 12, the first sealing ring 5 is pressed tightly by the inner wall of the light source receiving cavity 12. At this time, the first sealing ring 5 is deformed into an elliptical or nearly square shape. The first sealing ring 5 and the groove surface of the first annular groove 21, as well as the first sealing ring 5 and the inner wall of the light source receiving cavity 12, form a sealing surface, thereby further sealing the light-transmitting cover 2 and the outer shell 1.

[0052] The light source 3 is disposed in the light source receiving cavity 12 of the light source section 11, and the light source 3 emits light toward the light outlet 17. In some embodiments of this application, the light source 3 is an LED lamp with external control and power supply wires.

[0053] A wiring cavity 15 is formed within the mounting portion 14. The wiring cavity 15 is connected to the smaller end of the light source receiving cavity 12, and an outlet 18 is formed at the end of the wiring cavity 15 away from the light source receiving cavity 12. The wire of the light source 3 passes through the wiring cavity 15 and exits from the outlet 18. After the light source 3 is installed in place, glue is injected into the wiring cavity 15 of the mounting portion 14 to form a filler 8, which wraps around the wire of the light source 3. The filler 8 is tightly bonded to the inner wall of the wiring cavity 15, sealing the wiring cavity 15 and fixing the wire of the light source 3. In some embodiments of this application, the mounting portion 14 is cylindrical, with an outer diameter smaller than that of the light source portion 11, and its outer surface is threaded to match the mounting nut 4. The mounting nut 4 is threaded onto the mounting portion 14, such as... Figure 8 As shown, the inner edge of the radial section of the mounting nut 4 is in the shape of an arc.

[0054] like Figure 6 as well as Figure 7As shown, since the outer diameter of the mounting part 14 is smaller than the outer diameter of the light source part 11, the junction of the light source part 11 and the mounting part 14 has a stepped surface protruding from the mounting part 14. When the indicator light is installed on the underwater equipment, this stepped surface contacts the underwater equipment. The light source part 11 has a second annular groove 13 in the middle of the stepped surface, and a second sealing ring 6 is provided in the second annular groove 13. The second annular groove 13 plays a role in positioning and limiting the second sealing ring 6. Preferably, the second sealing ring 6 is an O-ring. When the indicator light is installed on the underwater equipment, the second sealing ring 6 cooperates with the second annular groove 13, and there is a certain space for compression deformation. In some other embodiments of this application, the second sealing ring 6 can also be a U-shaped, YD-shaped, or other type of sealing ring. The second sealing ring 6 protrudes from the second annular groove 13. When the mounting part 14 is connected to the external mounting hole, the second sealing ring 6 is pressed into the second annular groove 13. At this time, the first sealing ring 5 is deformed into an elliptical or nearly square shape. The second sealing ring 6 and the groove surface of the second annular groove 13, as well as the second sealing ring 6 and the surface of the underwater equipment, form a sealing surface, thereby further sealing the indicator light and the underwater equipment installation location.

[0055] The mounting part 14 has a third annular groove 16 at its connection with the light source part 11, and a third sealing ring 7 is disposed in the third annular groove 16. The third sealing ring 7 protrudes from the third annular groove 16, and when the mounting part 14 is connected to the external mounting hole, the third sealing ring 7 is pressed against the third annular groove 16. Specifically, as shown... Figure 7 As shown, when the indicator light is installed on the underwater equipment, the third sealing ring 7 engages with the third annular groove 16, resulting in a certain amount of compression deformation. The groove surface of the third sealing ring 7 and the third annular groove 16, as well as the circumferential surface of the mounting hole of the underwater equipment, form a sealing surface.

[0056] The implementation principle of an underwater indicator light according to an embodiment of this application is as follows: A light source 3 is installed in the light source receiving cavity 12 of the light source part 11 of the outer shell 1. Then, the first sealing ring 5 is installed on the light-transmitting cover 2 by positioning it through the first annular groove 21. The lower end of the light-transmitting cover 2 is facing the light outlet 17 of the outer shell 1, and a certain pressing pressure is applied to embed the light-transmitting cover 2 into the outer shell 1, thus completing the assembly of the light-transmitting cover 2 and the outer shell 1 simply and quickly. This reduces assembly difficulty, reduces assembly time, and improves assembly efficiency. A hard seal is formed by the interference fit between the light-transmitting cover 2 and the flared light source receiving cavity 12, and a dynamic seal is formed by the cooperation between the first sealing ring 5 and the inner wall of the light-transmitting cover 2 and the light source receiving cavity 12, thereby forming a double seal between the light-transmitting cover 2 and the outer shell 1. The combination of soft and hard seals creates a fluid resistance superior to the planar seal of the threaded gasket, eliminates the risk of thread corrosion, and provides a tighter connection when impacted by external water flow, increasing sealing performance. The wire of the light source 3 passes through the wiring cavity 15 of the mounting part 14 and exits from the outlet 18 to connect to the control and power supply device of the underwater equipment. Then, glue is injected into the wiring cavity 15 to form a filler 8 that encapsulates the wire of the light source 3. The filler 8 is fixed in the wiring cavity 15 by adhesive bonding, sealing the wiring cavity 15 and securing the wire of the light source 3. The second sealing ring 6 is installed in the second annular groove 13 on the light source part 11, and the third sealing ring 7 is installed in the third annular groove 16 on the mounting part 14. When installing and using the indicator light, insert the mounting part 14 and the power supply wire into the mounting hole of the underwater equipment; from the other side of the underwater equipment mounting hole, slip the mounting nut 4 onto any position of the wire of the light source 3 and tighten the mounting nut 4. After installation, the outer surface of the underwater device and the indicator light source 11 together compress the second sealing ring 6, forming a seal between the light source 11 and the underwater device; the circumferential surface of the mounting hole of the underwater device and the mounting part 14 together compress the third sealing ring 7, forming a seal between the mounting hole and the mounting part 14. The second sealing ring 6 and the third sealing ring 7 cooperate to form two seals, ensuring sealing performance and forming a series pressure buffer layer, making the stress distribution on the sealing interface more uniform and avoiding single-point overload that could cause the sealing ring to extrude and fail. The radial cross-section of the mounting nut 4 is curved, and the notch design allows the nut to be inserted into the wire at any position, simplifying the installation steps and improving installation efficiency and maintenance convenience.

[0057] The embodiments of this application have the effect of making the structure of the underwater indicator light simpler, easier to assemble, and more reliably sealed.

[0058] This application discloses an underwater indicator light in Embodiment 2. The difference between this embodiment and Embodiment 1 is that: Figure 6As shown, the flaring angle of the inner wall of the light source receiving cavity 12 is less than 30°. Preferably, the flaring angle of the inner wall of the light source receiving cavity 12 is 5-15°. More preferably, when the flaring angle is 8-12°, the optimal balance between the sealing ring compression ratio and the assembly resistance can be achieved. The first sealing ring 5 protrudes 0.3-0.5mm from the first annular groove 21. Through the dynamic matching of the three parameters of the first sealing ring 5 protrusion height, flaring angle, and interference fit, progressive compression can be generated during the assembly process. During the final compression, a non-linearly increasing sealing specific pressure can be formed, thereby improving the water tightness compared to conventional structures. Figure 7 As shown, the second annular groove 13 is designed with a trapezoidal cross-section that is wider at the top and narrower at the bottom, which can form a pressure storage chamber. When the external water pressure increases, the pressure is transmitted to the bottom of the groove through the outer shell 1, pushing the second sealing ring 6 to press against the contact surface for a second time. Under pressure fluctuation conditions such as wave impact, the space of the second annular groove 13 can buffer the deformation of the sealing ring and avoid fatigue failure of the second sealing ring 6. Figure 8 As shown, the central angle of the radial section of the mounting nut 4 is 300-340°, which solves the inconvenience of traditional installation methods, improves installation efficiency and maintenance convenience, while maintaining sufficient sealing and structural stability.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An underwater indicator light, characterized in that, include: The housing (1) includes a light source part (11) and a mounting part (14); A light source receiving cavity (12) is provided inside the light source part (11). The light source receiving cavity (12) is flared. A light outlet (17) is provided at the end of the light source receiving cavity (12) with a larger inner diameter. A wiring cavity (15) is provided inside the mounting part (14). The wiring cavity (15) is connected to the end of the light source receiving cavity (12) with a smaller inner diameter. A wiring outlet (18) is provided at the end of the wiring cavity (15) away from the light source receiving cavity (12). A light source (3) is disposed in the light source receiving cavity (12), the light source (3) emits light toward the light outlet (17), and the wire of the light source (3) passes through the wiring cavity (15) and exits from the wire outlet (18); A light-transmitting cover (2) is disposed inside the light source part (11). The outer peripheral wall of the light-transmitting cover (2) is press-fitted with the inner wall of the light source receiving cavity (12). A first annular groove (21) is provided on the outer peripheral wall of the light-transmitting cover (2). A first sealing ring (5) is provided in the first annular groove (21). The first sealing ring (5) protrudes from the first annular groove (21). When the light-transmitting cover (2) is inserted into the light source receiving cavity (12), the first sealing ring (5) is pressed by the inner wall of the light source receiving cavity (12).

2. An underwater indicator light according to claim 1, characterized in that, The flaring angle of the inner wall of the light source receiving cavity (12) is less than 30°.

3. An underwater indicator light according to claim 2, characterized in that, The flaring angle of the inner wall of the light source receiving cavity (12) is 5-15°, and the first sealing ring (5) protrudes from the first annular groove (21) by 0.3-0.5 mm.

4. An underwater indicator light according to claim 1, characterized in that, The light source part (11) has a stepped surface protruding from the mounting part (14) at the junction with the mounting part (14). The light source part (11) has a second annular groove (13) in the middle of the stepped surface. A second sealing ring (6) is provided in the second annular groove (13). The second sealing ring (6) protrudes from the second annular groove (13). When the mounting part (14) is connected to the external mounting hole, the second sealing ring (6) is pressed into the second annular groove (13).

5. An underwater indicator light according to claim 4, characterized in that, The cross-section of the second annular groove (13) is trapezoidal, and the bottom width of the second annular groove (13) is greater than the groove width.

6. An underwater indicator light according to claim 1, characterized in that, The mounting part (14) has a third annular groove (16) at the connection with the light source part (11). A third sealing ring (7) is provided in the third annular groove (16). The third sealing ring (7) protrudes from the third annular groove (16). When the mounting part (14) is connected to the external mounting hole, the third sealing ring (7) is pressed into the third annular groove (16).

7. An underwater indicator light according to claim 1, characterized in that, It also includes a filler (8), which is disposed in the wiring cavity (15) and bonded to the inner wall of the wiring cavity (15). The filler (8) wraps the wire of the light source (3).

8. An underwater indicator light according to claim 1, characterized in that, It also includes a mounting nut (4), which is threaded onto the mounting part (14), and the inner edge of the radial section of the mounting nut (4) is arc-shaped.

9. An underwater indicator light according to claim 8, characterized in that, The radial section of the mounting nut (4) has a central angle of 300-340°.

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