Marine aviation explosion-proof indicating lamp

Abstract

The invention relates to the technical field, and discloses a marine aviation explosion-proof indicating lamp which comprises a box body, a glass cover is arranged at the upper end of the box body, a light-emitting plate is arranged in the box body, the box body comprises an upper mounting plate, a connecting plate and a lower mounting plate which are sequentially connected from top to bottom, and a convex edge extending inwards is arranged at the upper end of the upper mounting plate. A protruding edge is arranged on the upper end face of the connecting plate, a strip-shaped sealing gasket is arranged below the protruding edge, a sealing groove is formed in the end face of the connecting plate, an O-shaped sealing ring is arranged in the sealing groove, the glass cover is clamped between the strip-shaped sealing gasket and the O-shaped sealing ring, and an upper gap is reserved between the upper end face of the glass cover and the lower end face of the protruding edge. A lower gap is reserved between the lower end face of the glass cover and the upper end face of the connecting plate, and the lower mounting plate is provided with a light-emitting plate and a self-cleaning mechanism. The glass cover floats between the O-shaped sealing ring and the strip-shaped sealing gasket, so that the end face of the glass cover is in flexible contact with the sealing ring, rigid contact between the glass cover and the box body is avoided, and the anti-explosion performance of the glass cover is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lighting, in particular to an explosion-proof indicator light for marine aviation. Background Art

[0002] In marine aviation, when an aircraft returns, it is necessary to cooperate with the indicator light on the ship to position the aircraft at the exact landing point to ensure the safe landing of the carrier-based aircraft. In the prior art, the indicator light includes a mounting box and a lamp body. The lamp body is installed in the mounting box. The upper end of the mounting box is a glass cover for protecting the lamp body and transmitting light. At the same time, the mounting box is embedded in the wall of the ship, so that the aircraft pilot can see the indicator light during the landing process.

[0003] In the field of marine aviation, especially in explosive environments such as offshore oil platforms, ship transportation, and seabed natural gas extraction, there are certain requirements for the explosion-proof and pressure-resistant capabilities of indicator lights, which are required to withstand certain impact forces. However, in the prior art, the glass cover of the indicator light is in rigid contact with the installation box, that is, the edge of the glass cover is directly attached to the installation box. When the glass cover is subjected to a large impact pressure, the edge of the glass cover will be subjected to a large pressure due to the rigid contact, causing the glass cover to burst. In addition, the lamp body will generate heat when working and increase the temperature inside the box body. Under the influence of the temperature difference between day and night, it is easy to cause water mist to form on the inner wall of the glass cover, affecting the illumination effect of the lamp body. Summary of the invention

[0004] To solve the above problems, the technical solution adopted by the present invention is:

[0005] An explosion-proof indicator light for marine aviation comprises a box body, a glass cover is provided at the upper end of the box body, a light-emitting board is provided in the box body, the box body comprises an upper mounting plate, a connecting plate and a lower mounting plate which are sequentially connected from top to bottom, the upper end of the upper mounting plate is provided with a convex edge extending inwards, a strip sealing gasket is provided below the convex edge, a sealing groove is provided on the upper end surface of the connecting plate, an O-type sealing ring is provided in the sealing groove, the glass cover is sandwiched between the strip sealing gasket and the O-type sealing ring, an upper gap is left between the upper end surface of the glass cover and the lower end surface of the convex edge, a lower gap is left between the lower end surface of the glass cover and the upper end surface of the connecting plate, and the light-emitting board and a self-cleaning mechanism are installed on the lower mounting plate.

[0006] Furthermore, a silicone layer is provided between the lower end surface of the upper mounting plate and the upper end surface of the connecting plate.

[0007] Furthermore, a transparent conductive shielding film is provided at one end of the glass cover that contacts the O-ring.

[0008] Furthermore, a copper film is provided at the junction between the inner wall of the connecting plate and the transparent conductive shielding film.

[0009] Furthermore, the self-cleaning mechanism includes a support frame, the lower end surface of the lower mounting plate is provided with a slide groove, the support frame is slidably connected to the slide groove through a roller, and the upper end of the support frame is provided with cleaning cotton, and the cleaning cotton is closely attached to the transparent conductive shielding film.

[0010] Furthermore, a driving member is provided on the inner wall of the lower mounting plate, and a transmission screw is connected to the output shaft of the driving member. The other end of the transmission screw passes through the support frame and is rotatably connected to the inner wall of the lower mounting plate, and the transmission screw is threadably adapted to the support frame.

[0011] Furthermore, an explosion-proof cable gland is provided on the bottom surface of the lower mounting plate.

[0012] Furthermore, the upper gap is smaller than the lower gap, wherein the upper gap is 0.03-0.05 mm and the lower gap is 0.15-0.18 mm.

[0013] Furthermore, a sealing groove is provided on the lower end surface of the connecting plate, and an O-ring is provided in the sealing groove.

[0014] Beneficial effects of the present invention:

[0015] 1. The glass cover floats between the O-ring and the strip sealing gasket, allowing the end face of the glass cover to flexibly contact the sealing ring. When the glass cover is under pressure, the O-ring and the strip sealing gasket absorb kinetic energy to avoid rigid contact between the glass cover and the box body, thereby improving the anti-explosion performance of the glass cover.

[0016] 2. The transparent conductive shielding film can make the cavity a conductive cavity. When the external electromagnetic wave encounters the conductive cavity, it will be reflected on its surface, thereby reducing the penetration of the electromagnetic wave. This reflection effect can effectively prevent the external electromagnetic wave from entering the cavity and protect the control components of the internal light-emitting board from interference.

[0017] 3. The self-cleaning mechanism can automatically clean the water vapor on the transparent conductive shielding film to ensure the transparency of the transparent conductive shielding film and the transparency of the transparent conductive shielding film. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and, together with the description, serve to explain the principles of the invention.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 A top view of the present invention;

[0022] Figure 3 for Figure 2 AA view;

[0023] Figure 4 for Figure 3 Magnified view of the D section;

[0024] Figure 5 for Figure 3 BB view;

[0025] Figure 6 for Figure 3 CC view of the .

[0026] In the picture

[0027] 1. Box body; 101. Upper mounting plate; 1011. Convex edge; 1012. Strip sealing gasket; 102. Connecting plate; 1021. Sealing groove; 1022. O-ring; 103. Lower mounting plate; 1031. Slide groove; 1032. Driving member; 1033. Transmission screw; 104. Silicone layer; 2. Glass cover; 201. Transparent conductive shielding film; 202. Copper film; 3. Light-emitting board; 4. Support frame; 5. Roller; 6. Cleaning cotton; 7. Explosion-proof cable gland. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0029] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] like Figure 1-Figure 6 Shown

[0031] An explosion-proof indicator light for marine aviation includes a box body 1, which includes an upper mounting plate 101, a connecting plate 102 and a lower mounting plate 103 connected in sequence from top to bottom. The upper end of the upper mounting plate 101 is provided with a convex edge 1011 extending inward, and a strip sealing gasket 1012 is provided below the convex edge 1011. The upper and lower end surfaces of the connecting plate 102 are both provided with sealing grooves 1021, and an O-type sealing ring 1022 is provided in the sealing groove 1021. The strip sealing gasket 1012 and the O-type sealing ring 1022 are sandwiched between them. There is a glass cover 2, and a cavity is formed between the upper mounting plate 101, the connecting plate 102, the lower mounting plate 103 and the glass cover 2. A light-emitting board 3 and a self-cleaning mechanism are installed on the inner wall of the bottom surface of the lower mounting plate 103. The cavity provides an installation space and a working space for the light-emitting board 3. The glass cover 2 ensures the sealing of the cavity through a strip sealing gasket 1012 at its upper end and an O-ring 1022 at its lower end to prevent water stains or other impurities on the ship deck from flowing into the cavity and affecting the normal operation of the light-emitting board 3.

[0032] When assembling the box body 1, the upper mounting plate 101 and the connecting plate 102 are pre-threadedly connected by a plurality of screws. When threadedly connected, the pre-tightening force of the screws provides pressure for the O-ring 1022 on the lower end surface of the connecting plate 102 and the strip sealing gasket 1012 on the upper end surface, so that they are compressed to ensure sealing. After the O-ring 1022 and the strip sealing gasket 1012 are compressed, an upper gap is still left between the upper end surface of the glass cover 2 and the lower end surface of the convex edge 1011, and a lower gap is still left between the lower end surface of the glass cover 2 and the upper end surface of the connecting plate 102, so that the glass cover 2 floats between the O-ring 1022 and the strip sealing gasket 1012, so that the end surface of the glass cover 2 is in flexible contact with the sealing ring. When the glass cover 2 is subjected to impact force, the kinetic energy is absorbed by the O-ring 1022 and the strip sealing gasket 1012, so that the glass cover 2 is prevented from rigidly contacting with the box body 1, and the explosion-proof performance of the glass cover 2 is improved. Generally speaking, when the glass cover 2 just bears the impact force, it will move in the direction of the O-ring 1022, so the upper gap is smaller than the lower gap, providing a longer moving distance for the O-ring 1022, so that the O-ring 1022 can absorb more kinetic energy; the preferred upper gap is 0.03-0.05mm, and the lower gap is 0.15-0.18mm. The appropriate upper gap and lower gap can be selected according to the actual situation. In addition, the upper gap is smaller to avoid large particles of hard impurities on the deck of the ship from being stuck in the upper gap, and also to ensure the sealing of the upper end of the glass cover 2. The distance between the upper gap and the lower gap can be controlled by using O-rings 1022 and strip seals 1012 of different materials. When connecting the upper mounting plate 101 and the connecting plate 102, the O-ring 1022 and the strip seal 1012 are subjected to the same pressure, so using materials with different elastic moduli can control their compression amount, thereby controlling the distance between the upper gap and the lower gap.

[0033] A silicone layer 104 is provided between the lower end surface of the upper mounting plate 101 and the upper end surface of the connecting plate 102, as well as between the upper end surface of the lower mounting plate 103 and the lower end surface of the connecting plate 102. The upper mounting plate 101, the connecting plate 102 and the lower mounting plate 103 are all made of aluminum alloy 2A12-T4, and the sealing between adjacent surfaces is poor. Therefore, when the upper mounting plate 101, the connecting plate 102 and the lower mounting plate 103 are threadedly connected to each other, silicone is first evenly applied to the corresponding end surfaces, and then they are threadedly connected by screws after being buckled. After the silicone is cooled, a silicone layer 104 is formed and firmly adheres to the box body 1 to ensure the sealing of the cavity.

[0034] In actual use, the indicator light will encounter various complex electromagnetic environments, including lightning, radio signals, etc. Electromagnetic interference will affect the normal operation of the light-emitting board 3, resulting in system failure of the light-emitting board 3 and affecting the safe landing of the aircraft on the ship. A transparent conductive shielding film 201 is provided at the end of the glass cover 2 that contacts the O-ring 1022. The transparent conductive shielding film 201 can use carbon nanotube transparent conductive film, graphene transparent conductive film, etc., so that the cavity becomes a conductive cavity. When the external electromagnetic wave encounters the conductive cavity, it will be reflected on its surface, thereby reducing the penetration of the electromagnetic wave. This reflection effect can effectively prevent the external electromagnetic wave from entering the cavity and protect the internal light-emitting board 3 from interference. In addition, the conductive cavity will generate eddy currents under the action of electromagnetic waves. These eddy currents will consume the energy of the electromagnetic wave and convert it into heat energy. This absorption effect can further reduce the penetration of the electromagnetic wave. In addition, since there is an upper gap between the lower end surface of the glass cover 2 and the upper end surface of the connecting plate 102, external electromagnetic waves will enter the cavity through the O-ring 1022, so a copper film 202 is provided at the intersection of the inner wall of the connecting plate 102 and the transparent conductive shielding film 201, wherein half of the copper film 202 is bonded to the conductive transparent film 201 by conductive glue, and the other half is bonded to the side wall of the connecting plate 102, so as to ensure that the entire cavity is a closed conductive cavity. It should be noted that the copper film 202 is bonded by conductive adhesive.

[0035] like Figure 1 As shown, the box body 1 has two cavities, and light-emitting panels 3 are installed in both cavities, that is, two light-emitting panels 3 are arranged in one indicator light, and the lights on the two light-emitting panels 3 are arranged in an arrow shape, and the arrow directions of the two light-emitting panels 3 are the same, one of the light-emitting panels 3 is a green light, and the other light-emitting panel 3 is a yellow light; on the ship, four indicator lights are evenly distributed on the circumference of the ship are arranged on the ship's wall, that is, the four indicator lights are installed up and down and left and right, and the arrow direction of the light-emitting panel 3 in each indicator light points to the center of the circle; when the aircraft is landing, the indicator light is located directly in front of the aircraft, wherein the left and right indicator lights are used to indicate the left and right position relationship between the aircraft and the landing point, and the upper and lower indicator lights are used to indicate the position relationship between the aircraft and the landing point. The front and rear position relationship of the landing point; for example, when the aircraft is above the landing point, the existing detection device obtains the position information of the aircraft relative to the landing point, and then controls the four indicator lights to remind the pilot, such as when the aircraft deviates to the left side of the landing point, the yellow light on the left is on, and the green lights of the other three indicator lights are on; when the aircraft deviates to the left rear of the landing point, the yellow lights of the left and lower indicator lights are on, and the green lights of the other two indicator lights are on; when the aircraft deviates to the left front of the landing point, the yellow lights of the left and upper indicator lights are on, and the green lights of the other two indicator lights are on; when the aircraft is facing the landing point, the green lights of the four indicator lights are on, indicating that the aircraft can land safely.

[0036] The light-emitting panel 3 generates a certain amount of heat when working, and the conductive cavity also generates a certain amount of heat after absorbing electromagnetic waves. There will be a temperature difference between the cavity and the outside world, and the water vapor in the air in the cavity will liquefy in the transparent conductive shielding film 201, causing the surface of the film to become rough, which will not only affect the transparency of the transparent conductive shielding film 21, hinder the driver's observation, increase safety hazards, but also affect its conductive properties and its anti-electromagnetic interference function. A self-cleaning mechanism is installed in the lower mounting plate 103, and the self-cleaning mechanism is used to automatically clean the water vapor on the transparent conductive shielding film 21. The self-cleaning mechanism includes a support frame 4, a slide groove 1031 is provided on the lower end surface of the lower mounting plate 103, and the support frame 4 is slidably connected to the slide groove 1031 through a roller 5. A cleaning cotton 6 is provided at the upper end of the support frame 4, and the cleaning cotton 6 is close to the transparent conductive shielding film 201.

[0037] The support frame 4 adopts a rectangular frame, and vertical support columns are arranged at its four corners. The rollers 5 are installed on the support columns. At the same time, two slide grooves 1031 are provided and arranged in parallel. The rollers 5 on the four support columns are correspondingly located in the slide grooves 1031, so that the support frame 4 is in four-point contact, ensuring the stability of the support frame 4 when sliding along the slide grooves 1031. The inner wall of the lower mounting plate 103 is provided with a driving member 1032, and the driving member 1032 can be a stepping motor, a servo motor, etc. The output shaft of the driving member 1032 is connected with a transmission screw 1033, and the other end of the transmission screw 1033 passes through the support column on the support frame 4 and is rotatably connected to the inner wall of the lower mounting plate 103 through a bearing, and the transmission screw 1033 is threadedly adapted to the support frame 4, and the sliding of the support frame 4 is achieved by the rotation of the transmission screw 1033. When water mist is generated on the transparent conductive shielding film 201, the driving member 1032 can be activated to allow the support frame 4 to slide back and forth in the slide groove 1031, and the cleaning cotton 6 can slide back and forth on the transparent conductive shielding film 201. The cleaning cotton 6 can use materials with good water absorption and soft texture, such as sponge, polyester glue cotton, etc., which can not only ensure its flexible contact with the transparent conductive shielding film 201 and not affect the explosion-proof effect of the glass cover 2, but also absorb the water mist on the transparent conductive shielding film 201 during the back and forth movement. It should be noted that the transparent conductive shielding film 201 can be electroplated on the glass cover 2 by electroplating. Compared with the bonding method using conductive glue, the transparent conductive shielding film 201 is more solid, avoiding the problem of the transparent conductive shielding film 201 being rubbed off by the cleaning cotton 6.

[0038] An explosion-proof gland 7 is provided on the bottom surface of the lower mounting plate 103, and the explosion-proof gland 7 is used for the external power supply and control system of the light-emitting panel 3 and the self-cleaning mechanism. The power supply provides a power source for the light-emitting panel 3 and the self-cleaning mechanism, and the control system is used to control the working state of the light-emitting panel 3 and the self-cleaning mechanism.

[0039] There are a few points to note:

[0040] (1) Unless otherwise defined, in the embodiments of the present disclosure and the accompanying drawings, the same reference numerals represent the same meanings.

[0041] (2) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can refer to the general design.

[0042] (3) For the sake of clarity, parts or regions are enlarged in the drawings used to describe the embodiments of the present disclosure. It is understood that when an element is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element, or there may be intervening elements.

[0043] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. An explosion-proof indicator light for marine aviation, comprising a box body (1), a glass cover (2) being provided at the upper end of the box body (1), and a light-emitting panel (3) being provided in the box body (1), characterized in that: The box body (1) comprises an upper mounting plate (101), a connecting plate (102) and a lower mounting plate (103) which are connected in sequence from top to bottom; the upper end of the upper mounting plate (101) is provided with a convex edge (1011) extending inwards; a strip sealing gasket (1012) is provided below the convex edge (1011); the upper end surface of the connecting plate (102) is provided with a sealing groove (1021); an O-type sealing ring (1022) is provided in the sealing groove (1021); the glass cover (2) is sandwiched between the strip sealing gasket (1012) and the O-type sealing ring (1022); an upper gap is left between the upper end surface of the glass cover (2) and the lower end surface of the convex edge (1011); a lower gap is left between the lower end surface of the glass cover (2) and the upper end surface of the connecting plate (102); and the lower mounting plate (103) is provided with a light-emitting panel (3) and a self-cleaning mechanism.

2. The explosion-proof indicator light for marine and aviation use according to claim 1, characterized in that: A silicone layer (104) is provided between the lower end surface of the upper mounting plate (101) and the upper end surface of the connecting plate (102).

3. The explosion-proof indicator light for marine and aviation use according to claim 2, characterized in that: One end of the glass cover (2) that contacts the O-ring (1022) is provided with a transparent conductive shielding film (201).

4. The explosion-proof indicator light for marine and aviation use according to claim 3, characterized in that: A copper film (202) is provided at the junction of the inner wall of the connecting plate (102) and the transparent conductive shielding film (201).

5. The explosion-proof indicator light for marine and aviation use according to claim 4, characterized in that: The self-cleaning mechanism comprises a support frame (4), the lower end surface of the lower mounting plate (103) is provided with a slide groove (1031), the support frame (4) is slidably connected to the slide groove (1031) via a roller (5), and the upper end of the support frame (4) is provided with a cleaning cotton (6), and the cleaning cotton (6) is in close contact with the transparent conductive shielding film (201).

6. The explosion-proof indicator light for marine and aviation use according to claim 5, characterized in that: The inner wall of the lower mounting plate (103) is provided with a driving member (1032), the output shaft of the driving member (1032) is connected to a transmission screw (1033), the other end of the transmission screw (1033) passes through the support frame (4) and is rotatably connected to the inner wall of the lower mounting plate (103), and the transmission screw (1033) is threadably adapted to the support frame (4).

7. The explosion-proof indicator light for marine and aviation use according to claim 6, characterized in that: An explosion-proof cable gland (7) is provided on the bottom surface of the lower mounting plate (103).

8. The explosion-proof indicator light for marine and aviation use according to claim 1, characterized in that: The upper gap is smaller than the lower gap, wherein the upper gap is 0.03-0.05 mm and the lower gap is 0.15-0.18 mm.

9. The explosion-proof indicator light for marine and aviation use according to claim 1, characterized in that: The lower end surface of the connecting plate (102) is provided with a sealing groove (1021), and an O-type sealing ring (1022) is provided in the sealing groove (1021).

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