Explosion-proof lamp

Abstract

The present invention relates to the field of explosion-proof lighting equipment, and discloses an explosion-proof lamp, which includes a main housing, an annular housing fixedly connected to the main housing, and a light-transmitting plate clamped between the main housing and the annular housing. An open installation space for internally installing a lighting component is provided on the main housing; the light-transmitting plate includes a light-transmitting main body and a limiting portion. The light-transmitting main body is located outside the installation space and abuts against both the main housing and the annular housing along a first direction, and the first direction is parallel to the direction of the clamping force received by the light-transmitting plate. There are spaces between the positions where the light-transmitting main body abuts against the main housing and the annular housing and the side edges of the light-transmitting main body along the direction perpendicular to the first direction; the limiting portion is located inside the installation space and abuts against the side wall of the installation space along the direction perpendicular to the first direction; at least along the first direction, an elastic sealing layer is provided between the light-transmitting plate and the main housing, and the probability of the light-transmitting plate breaking is reduced by reducing the clamping force on the light-transmitting plate and changing the clamping position of the light-transmitting plate.

Description

Technical Field

[0001] The present invention relates to the field of explosion-proof lighting equipment, and particularly to an explosion-proof lamp. Background Art

[0002] An explosion-proof lamp is a lighting fixture with explosion-proof performance, which refers to a lamp used in dangerous places where flammable gases and dust exist. It can prevent electric arcs, sparks and high temperatures that may be generated inside the lamp from igniting the flammable gases and dust in the surrounding environment, so as to meet the explosion-proof requirements.

[0003] In the existing explosion-proof lamp, the light-transmitting plate is clamped and fixed by upper and lower shells, and the light-transmitting plate seals the lighting component inside the shell. To ensure the stability and sealing performance of the light-transmitting plate, the upper and lower shells need to apply a sufficiently large clamping force to the light-transmitting plate. The positions where the upper and lower shells clamp the light-transmitting plate are generally located at the edge positions of the light-transmitting plate. The large clamping stress at the edge of the light-transmitting plate makes the light-transmitting plate prone to cracking. When the clamping force of the upper and lower shells on the light-transmitting plate is insufficient, it will also affect the installation stability of the light-transmitting plate and the sealing performance of the explosion-proof lamp. Summary of the Invention

[0004] In view of the above deficiencies or defects in the prior art, the present invention provides an explosion-proof lamp, which reduces the probability of cracking of the light-transmitting plate by reducing the clamping force on the light-transmitting plate and changing the clamping position of the light-transmitting plate on the premise of ensuring the installation stability and sealing performance.

[0005] To achieve the above object, the present invention provides an explosion-proof lamp, which includes a main shell, an annular shell fixedly connected to the main shell, and a light-transmitting plate clamped between the main shell and the annular shell. An open installation space for internally installing a lighting component is provided on the main shell;

[0006] The light-transmitting plate includes a light-transmitting main body and a limiting part, wherein:

[0007] The light-transmitting main body is located outside the installation space and abuts against both the main shell and the annular shell along a first direction, the first direction is parallel to the direction of the clamping force received by the light-transmitting plate, and there is a distance between the positions where the light-transmitting main body abuts against the main shell and the annular shell and the side edge of the light-transmitting main body along the side perpendicular to the first direction;

[0008] The limiting part is located inside the installation space and abuts against the side wall of the installation space along the direction perpendicular to the first direction;

[0009] At least along the first direction, an elastic sealing layer is provided between the light-transmitting plate and the main shell.

[0010] In some embodiments, an annular abutting portion and a blocking portion are provided on an end surface of the main housing facing the light-transmitting plate. The installation space is opened on an annular inner side of the abutting portion, and the abutting portion is used to abut against the light-transmitting body. The abutting portion is located on an annular inner side of the blocking portion, and an accommodating space for filling the elastic sealing layer is formed between the abutting portion and the blocking portion;

[0011] The elastic sealing layer includes an elastic sealing ring and / or a sealant layer.

[0012] In some embodiments, the blocking portion abuts against the light-transmitting body, and there is a spacing between an abutting position of the blocking portion and the light-transmitting body in a direction perpendicular to the first direction and a side edge of the light-transmitting body.

[0013] In some embodiments, the blocking portion does not abut against the light-transmitting body, and there is a gap between the blocking portion and a side edge of the light-transmitting body in a direction perpendicular to the first direction.

[0014] In some embodiments, in a projection along a direction perpendicular to the first direction, the blocking portion overlaps with the light-transmitting body.

[0015] In some embodiments, the annular housing includes an annular connecting body for being fastened to the main housing and a supporting portion fixedly provided on an annular inner side of the connecting body. The supporting portion abuts against the light-transmitting body along the first direction.

[0016] In some embodiments, along the annular direction of the connecting body, a cross-section of the supporting portion is hook-shaped and has a root portion and a tip portion. The root portion is fixed to the connecting body, and the tip portion abuts against the light-transmitting body.

[0017] In some embodiments, reinforcing ribs are provided on the supporting portion, and the reinforcing ribs extend from the root portion to the tip portion.

[0018] In some embodiments, a plurality of the supporting portions are arranged in an array along the annular direction of the connecting body.

[0019] In some embodiments, along the annular direction of the connecting body, the supporting portion is continuous and projects as an annular shape in a direction along the first direction.

[0020] Applying the above technical solutions of the present invention to an explosion-proof lamp has the following effects:

[0021] (1) The light-transmitting plate is divided into a light-transmitting body and a limiting part. The light-transmitting body is mainly used to bear the clamping force in the first direction. The light-transmitting body is clamped along the first direction by the main shell and the annular shell, and the light-transmitting plate is limited along the first direction. The limiting part achieves the limitation of the light-transmitting plate in the vertical first direction by abutting against the side wall of the installation space, so that the light-transmitting plate can maintain stable installation under a small clamping stress;

[0022] (2) The main shell and the annular shell are abutted at a position with a certain distance from the side edge of the light-transmitting body, so as to avoid the main shell and the annular shell being directly clamped on the edge of the light-transmitting body, reduce the possibility of the light-transmitting body being broken, and ensure the sealing of the light-transmitting plate. The limiting part is abutted against the side wall of the installation space along the first vertical direction, that is, although the side edge of the limiting part is abutted against the main shell, the limiting part does not bear the force, and the risk of breakage is relatively small;

[0023] (3) At least along the first direction, an elastic sealing layer is provided between the light-transmitting plate and the main shell to ensure the sealing performance and further improve the connection stability. In addition, the deformation of the elastic sealing layer can offset part of the clamping stress between the main shell and the light-transmitting plate, thereby further protecting the light-transmitting plate.

[0024] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of an explosion-proof lamp of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of an explosion-proof lamp of the present invention when viewed from an upward angle;

[0027] Figure 3 yes Figure 1 Explosion diagram of

[0028] Figure 4 It is a side cross-sectional view of the explosion-proof lamp after omitting the suspension rod;

[0029] Figure 5 yes Figure 4 Explosion diagram of

[0030] Figure 6 This is a cross-sectional view of the explosion-proof lamp in a horizontal lighting state after the suspension rod is omitted;

[0031] Figure 7 is a schematic diagram of the three-dimensional structure of the light-transmitting plate when the limiting portion is in a ring shape;

[0032] Figure 8 yes Figure 4 A is an enlarged schematic diagram of the sealing layer in the fourth type of setting state;

[0033] Figure 9 is Figure 6 a schematic diagram of the sealing layer in the first type of setting state in

[0034] Figure 10 is Figure 6 a schematic diagram of the sealing layer in the second type of setting state in

[0035] Figure 11 is Figure 6 a schematic diagram of the sealing layer in the third type of setting state in

[0036] Figure 12 is Figure 5 an enlarged schematic diagram of B in

[0037] Figure 13 a front view schematic diagram of the end face on the main housing for abutting against the light-transmitting plate;

[0038] Figure 14 a three-dimensional structural schematic diagram and a partial enlarged view of the annular housing when the supporting part is continuous;

[0039] Figure 15 is Figure 14 a top view schematic diagram of

[0040] Figure 16 a three-dimensional structural schematic diagram and a partial enlarged view of the annular housing when several supporting parts are provided;

[0041] Figure 17 is Figure 16 a top view schematic diagram of

[0042] Explanation of reference numerals

[0043] 1. Main housing; 11. Installation space; 12. Abutting part; 13. Blocking part; 14. Through hole; 2. Annular housing; 21. Connection main body; 22. Supporting part; 221. Root part; 222. Tip part; 23. Reinforcing rib; 24. Threaded hole; 25. Partition groove; 3. Light-transmitting plate; 31. Light-transmitting main body; 32. Limiting part; 4. Lighting assembly; 5. Accommodating space; 6. Elastic sealing layer; 7. Fastener; 8. Suspension rod. Detailed description of specific embodiments

[0044] The following is a detailed description of the specific embodiments of the present invention. It should be understood that the specific embodiments described herein are only for explaining and understanding the present invention, and are not used to limit the present invention.

[0045] In the present invention, unless otherwise stated, the orientation terms such as "upper, lower" generally refer to the orientation in the assembled and used state. "Inner, outer" refer to the inner and outer of the contour of each component itself.

[0046] Combined with the attached Figure 1 to the attached Figure 5 In an embodiment of the present invention, an explosion-proof lamp is disclosed, which includes a main housing 1, an annular housing 2, and a light-transmitting plate 3. The main housing 1 is tightly connected to the annular housing 2, and the light-transmitting plate 3 is clamped between the main housing 1 and the annular housing 2. An open installation space 11 is provided on the main housing 1, and a lighting component 4 is installed inside the installation space 11. After the main housing 1 and the annular housing 2 clamp and install the light-transmitting plate 3, the light-transmitting plate 3 closes the opening of the installation space 11, and the lighting light emitted by the lighting component 4 illuminates through the light-transmitting plate 3 and the annular through-hole 14 of the annular housing 2.

[0047] A suspension rod 8 is tightly installed on the main housing 1, and the explosion-proof lamp can be installed on the ceiling or wall through the suspension rod 8. Bolts and other fasteners 7 can be used for tight connection between the main housing 1 and the annular housing 2 and between the suspension rod 8 and the main housing 1, and the installation is convenient and fast.

[0048] For the light-transmitting plate 3, it includes a light-transmitting main body 31 and a limiting part 32. The light-transmitting main body 31 is located outside the installation space 11 and abuts against both the main housing 1 and the annular housing 2 along the first direction, and there is a distance between the position where the light-transmitting main body 31 abuts against the main housing 1 and the annular housing 2 and the side edge of the light-transmitting main body 31 along the direction perpendicular to the first direction. The light-transmitting main body 31 is usually made of glass or transparent resin material. The main housing 1 and the annular housing 2 clamp the light-transmitting main body 31 along the first direction, and there is a distance between the clamping position and the side edge of the light-transmitting main body 31 along the direction perpendicular to the first direction, which can reduce the edge stress on the light-transmitting main body 31, thereby reducing the cracking situation of the light-transmitting main body 31 due to excessive edge stress. The cracking of the light-transmitting plate 3 will not only affect the clamping installation stability and light-transmitting effect of the light-transmitting plate 3, but also affect the sealing performance of the installation space 11.

[0049] The limiting part 32 is located inside the installation space 11 and abuts against the side wall of the installation space 11 along the direction perpendicular to the first direction. The light-transmitting plate 3 is limited in the direction perpendicular to the first direction through the abutting action between the limiting part 32 and the side wall of the installation space 11. In addition, the limiting part 32 abuts against the side wall of the installation space 11 through its own side edge, and the abutting direction is along the direction perpendicular to the first direction. Therefore, the main housing 1 does not apply edge stress to the limiting part 32, and the cracking risk of the limiting part 32 is small.

[0050] Specifically, for further illustration, a spatial rectangular coordinate system XYZ is established, where the first direction is consistent with the Z direction, the X-Y plane is the plane perpendicular to the Z direction, and any straight line in the X-Y plane that intersects the Z axis is perpendicular to both the Z direction and the first direction.

[0051] The provision of the limiting portion 32 in the light-transmitting plate 3 enables the main housing 1 and the annular housing 2 to clamp and fix the light-transmitting plate 3 with a smaller clamping force. The specific description is as follows:

[0052] When the explosion-proof lamp is installed at positions such as the ceiling of a wall and conducts vertical illumination from top to bottom, the clamping force F of the main housing 1 and the annular housing 2 on the light-transmitting main body 31 needs to overcome at least the gravity G of the light-transmitting plate 3, that is, F is not less than G, to ensure the stable installation of the light-transmitting plate 3 in the Z direction. The Z direction is consistent with the direction of gravity. At this time, in the X-Y plane, the light-transmitting plate 3 remains stably installed under the action of the friction force between the main housing 1 and the annular housing 2, and the direction of the friction force is located in the X-Y plane.

[0053] When the explosion-proof lamp is installed at positions such as a wall and, in combination with the attached Figure 6 , conducts illumination from the horizontal direction, the friction force f generated by the clamping of the main housing 1 and the annular housing 2 on the light-transmitting main body 31 needs to overcome at least the gravity G of the light-transmitting plate 3, that is, f is not less than G.

[0054] The friction force f between the main housing 1 and the annular housing 2 and the light-transmitting main body 31 is f = μF, and the friction coefficient μ is less than 1, that is, f is less than F. Therefore, when the main housing 1 and the annular housing 2 clamp the light-transmitting plate 3, the clamping force F of the main housing 1 and the annular housing 2 on the light-transmitting plate 3 needs to be greater than the gravity G of the light-transmitting plate 3 to ensure that the friction force f is not less than the gravity G of the light-transmitting plate 3, so that the explosion-proof lamp can meet various application scenarios.

[0055] The provision of the limiting portion 32 in the light-transmitting plate 3 can limit the light-transmitting plate 3 to a certain extent in the X-Y plane direction. When the explosion-proof lamp conducts horizontal or other non-vertical illumination, the friction force f is allowed to be less than the gravity G of the light-transmitting plate 3, and the abutting action of the limiting portion 32 is used to achieve the installation stability of the light-transmitting plate 3 in the X-Y plane direction. Therefore, compared with the existing explosion-proof lamp where the clamping force F needs to be greater than the gravity G of the light-transmitting plate 3, in this embodiment, after the limiting portion 32 is provided on the light-transmitting plate 3, it is only necessary to ensure that the clamping force F of the main housing 1 and the annular housing 2 on the light-transmitting plate 3 is not less than the gravity G of the light-transmitting plate 3, which expands the optional range of the clamping force F, and thus can reduce the situation of the light-transmitting plate 3 being broken by reducing the clamping force of the main housing 1 and the annular housing 2 on the light-transmitting plate 3.

[0056] In some embodiments, in combination with the attached Figure 7, the limiting part 32 is made of a material with a higher stiffness than the light-transmitting main body 31, such as aluminum alloy. The limiting part 32 made of aluminum alloy material needs to be fixed to the light-transmitting main body 31 made of glass material. Since the side edge of the limiting part 32 needs to abut against the side wall of the installation space 11, and there are various factors such as installation errors, flatness errors of the side wall of the installation space 11, and non-vertical lighting conditions, the limiting part 32 will still bear a certain amount of edge stress when it abuts against the side wall of the installation space 11. Therefore, the limiting part 32 made of aluminum alloy material with a relatively high stiffness compared to the glass material can bear a certain amount of edge stress without cracking.

[0057] The limiting part 32 made of aluminum alloy material is basically non-light-transmitting. In this embodiment, the limiting part 32 is made into a ring shape. While meeting the requirement of abutting against the side wall of the installation space 11, the lighting light emitted by the lighting component 4 can pass through the middle ring of the limiting part 32, reducing the influence of the limiting part 32 on lighting.

[0058] It should be noted that the above-mentioned ring shape and the ring shapes involved in the subsequent applications of this application do not specifically refer to circular rings, but include other closed ring shapes such as rectangular rings and polygonal rings.

[0059] In some other embodiments, the limiting part 32 and the light-transmitting main body 31 can be made of the same material and integrally formed to ensure the consistency of the light-transmitting performance of the light-transmitting plate 3.

[0060] It should be noted that the limiting part 32 integrally formed with glass material is simpler and more convenient to manufacture than the limiting part 32 made of aluminum alloy, while the limiting part 32 made of aluminum alloy has a stronger bearing capacity for edge stress.

[0061] In addition, in combination with the attached Figure 8 to the attached Figure 12 , at least along the first direction, there is an elastic sealing layer 6 between the light-transmitting plate 3 and the main housing 1. On the one hand, the setting of the limiting part 32 can meet the installation stability requirements of the light-transmitting plate 3 with a smaller clamping force when the main housing 1 and the annular housing 2 clamp the light-transmitting plate 3. Due to the use of a smaller clamping force, to a certain extent, the sealing strength between the main housing 1 and the light-transmitting plate 3 will be reduced, and the elastic sealing layer 6 can compensate for the gap between the main housing 1 and the light-transmitting plate 3 to ensure the sealing performance of the installation space 11.

[0062] On the other hand, the elastic sealing layer 6 has the ability of elastic deformation. The elastic sealing layer 6 is arranged between the light-transmitting plate 3 and the main housing 1 in the first direction. The light-transmitting plate 3 and the main housing 1 are clamped in the first direction, and a clamping force is applied to the elastic sealing layer 6. The gaps are further filled through the deformation of the elastic sealing layer 6 to improve the sealing performance. Moreover, the clamping force borne by the light-transmitting plate 3 can be unloaded through the deformation of the elastic sealing layer 6, reducing the load of the clamping installation of the light-transmitting plate 3, thereby further reducing the occurrence of the situation where the light-transmitting plate 3 is broken.

[0063] In a further setting, in combination with the attached Figure 13 , on the end face of the main housing 1 facing the light-transmitting plate 3, there are an annular abutting portion 12 and a blocking portion 13. The installation space 11 is opened on the annular inner side of the abutting portion 12, and the abutting portion 12 is used to abut against the light-transmitting main body 31. The abutting portion 12 is located on the annular inner side of the blocking portion 13, and a receiving space 5 for filling the sealing layer is formed between the abutting portion 12 and the blocking portion 13.

[0064] Specifically, the abutting portion 12 and the blocking portion 13 can be integrally formed with the main housing 1. The abutting portion 12 abuts against the light-transmitting main body 31, and there should be a distance between the abutting position and the side edge of the light-transmitting main body 31. In this embodiment, the abutting portion 12 is located at the edge of the opening of the installation space 11, and can abut against the light-transmitting main body 31 in the first direction and can also abut against the limiting portion 32 in the direction perpendicular to the first direction.

[0065] The blocking portion 13 cooperates with the abutting portion 12 to form the receiving space 5 for limiting the elastic sealing layer 6. Among them, when the blocking portion 13 abuts against the light-transmitting main body 31, there is also a distance between the abutting position and the side edge of the light-transmitting main body 31, and at this time, the receiving space 5 is in a sealed state. When the blocking portion 13 does not abut against the light-transmitting main body 31, there is a gap between the blocking portion 13 and the light-transmitting main body 31 for the arrangement of the elastic sealing layer 6.

[0066] For the sealing layer, it includes an elastic sealing ring or a sealing glue layer or a combination of an elastic sealing ring and a sealing glue layer. Generally, a rubber sealing ring is used for the elastic sealing ring, and an epoxy resin sealing glue is generally used for the sealing glue layer. For the setting method of the sealing layer, the following embodiments are provided in the present application:

[0067] The first type: The blocking portion 13 abuts against the light-transmitting main body 31.

[0068] a. The sealing layer uses an elastic sealing ring.

[0069] First, the elastic sealing ring is snapped into the receiving space 5 between the blocking portion 13 and the abutting portion 12, and then the light-transmitting main body 31 is abutted against the abutting portion 12 and the limiting portion 32, so that the elastic sealing ring is clamped between the light-transmitting main body 31 and the main housing 1.

[0070] b. The sealing layer uses a sealing glue layer.

[0071] First, inject sealant into the accommodation space 5, and then press the light-transmitting main body 31 against the abutting portion 12 and the limiting portion 32. Wait for the sealant to solidify into a sealant layer.

[0072] c. The sealing layer adopts a combination of an elastic sealing ring and a sealant layer.

[0073] First, inject sealant into the accommodation space 5, then snap the elastic sealing ring into the accommodation space 5, and then press the light-transmitting main body 31 against the abutting portion 12 and the limiting portion 32. Wait for the sealant to solidify into a sealant layer.

[0074] In the first type, the light-transmitting main body 31 abuts against both the abutting portion 12 and the limiting portion 32, and the accommodation space 5 is in a closed state.

[0075] Second type: The blocking portion 13 does not abut against the light-transmitting main body 31, and along the vertical first direction, the blocking portion 13 is located inside the side edge of the light-transmitting main body 31.

[0076] a. The sealing layer adopts an elastic sealing ring.

[0077] First, snap the elastic sealing ring into the accommodation space 5 between the blocking portion 13 and the abutting portion 12, and then press the light-transmitting main body 31 against the abutting portion 12, so that the elastic sealing ring is clamped between the light-transmitting main body 31 and the main housing 1.

[0078] b. The sealing layer adopts a sealant layer.

[0079] First, inject sealant into the accommodation space 5, and then press the light-transmitting main body 31 against the abutting portion 12. Wait for the sealant to solidify into a sealant layer. Or, first press the light-transmitting main body 31 against the abutting portion 12, and then inject sealant into the accommodation space 5 from the gap between the light-transmitting main body 31 and the limiting portion 32. Wait for the sealant to solidify into a sealant layer.

[0080] c. The sealing layer adopts a combination of an elastic rubber ring and a sealant layer.

[0081] First, snap the elastic sealing ring into the accommodation space 5, then inject sealant into the accommodation space 5, and then press the light-transmitting main body 31 against the abutting portion 12. Wait for the sealant to solidify into a sealant layer. Or, first inject sealant into the accommodation space 5, then snap the elastic sealing ring into the accommodation space 5, and then press the light-transmitting main body 31 against the abutting portion 12. Wait for the sealant to solidify into a sealant layer. Or, first snap the elastic sealing ring into the accommodation space 5, then press the light-transmitting main body 31 against the abutting portion 12, and then inject sealant into the accommodation space 5 from the gap between the light-transmitting main body 31 and the limiting portion 32. Wait for the sealant to solidify into a sealant layer.

[0082] In the second type, the limiting portion 32 is not in contact with the light-transmitting main body 31 and a gap is left for injecting glue.

[0083] The third type: The blocking portion 13 is not in contact with the light-transmitting main body 31, and along the direction perpendicular to the first direction, the blocking portion 13 is located outside the side edge of the light-transmitting main body 31.

[0084] a. The sealing layer uses an elastic sealing ring.

[0085] First, snap the elastic sealing ring into the accommodation space 5 between the blocking portion 13 and the abutting portion 12, and then abut the light-transmitting main body 31 against the abutting portion 12, so that the elastic sealing ring is clamped between the light-transmitting main body 31 and the main housing 1.

[0086] b. The sealing layer uses a sealant layer.

[0087] First, inject sealant into the accommodation space 5, and then abut the light-transmitting main body 31 against the abutting portion 12. Wait for the sealant to solidify into a sealant layer; or, first abut the light-transmitting main body 31 against the abutting portion 12, and then inject sealant into the accommodation space 5 from the gap between the light-transmitting main body 31 and the limiting portion 32. Wait for the sealant to solidify into a sealant layer.

[0088] c. The sealing layer uses a combination of an elastic rubber ring and a sealant layer.

[0089] First, snap the elastic sealing ring into the accommodation space 5, then inject sealant into the accommodation space 5, and then abut the light-transmitting main body 31 against the abutting portion 12. Wait for the sealant to solidify into a sealant layer; or, first inject sealant into the accommodation space 5, then snap the elastic sealing ring into the accommodation space 5, and then abut the light-transmitting main body 31 against the abutting portion 12. Wait for the sealant to solidify into a sealant layer; or, first snap the elastic sealing ring into the accommodation space 5, then abut the light-transmitting main body 31 against the abutting portion 12, and then inject sealant into the accommodation space 5 from the gap between the light-transmitting main body 31 and the limiting portion 32. Wait for the sealant to solidify into a sealant layer.

[0090] The difference between the second type and the third type lies in that: along the direction perpendicular to the first direction, there is a gap between the blocking portion 13 and the side edge of the light-transmitting main body 31. This avoids contact between the blocking portion 13 and the side edge of the light-transmitting main body 31 and leaves a gap for injecting glue. In addition, compared with the second type, the gap between the blocking portion 13 and the light-transmitting main body 31 in the third type is more convenient for injecting sealant into the accommodation space 5.

[0091] The fourth type: On the basis of the third type, the height of the blocking portion 13 along the first direction is greater than the height of the abutting portion 12. That is: along the direction perpendicular to the first direction, the blocking portion 13 and the light-transmitting main body 31 partially overlap.

[0092] In the fourth type, the method of setting the sealing layer is the same as that of the third type. The difference is that in the fourth type, the obtained sealing layer partially abuts between the side of the light-transmitting main body 31 along the direction perpendicular to the first direction and the limiting portion 32, which not only protects the side of the light-transmitting main body 31, but also enhances the sealing effect of the sealing layer.

[0093] In summary, based on the setting methods of the blocking portion 13 and the abutting portion 12 and the type of the sealing layer, different methods can be adopted for setting the sealing layer, and the setting methods are flexible and diverse.

[0094] Combined with the attached Figure 14 to the attached Figure 17 Regarding the annular housing 2, the annular shape is such that the light of the lighting component 4 can pass through the middle of the annulus. The annular housing 2 includes a connecting main body 21 and a supporting portion 22. Among them, the connecting main body 21 is annular and is used for tightly connecting with the main housing 1, and the supporting portion 22 is fixedly arranged inside the annulus of the connecting main body 21, and the supporting portion 22 abuts against the light-transmitting main body 31 along the first direction, and cooperates with the main housing 1 to clamp the light-transmitting main body 31. Specifically, a threaded hole 24 is formed on the connecting main body 21, and a through hole 14 is formed on the main housing 1 for fastening connection by a fastener 7 such as a bolt.

[0095] Regarding the supporting portion 22, in the annular direction of the connecting main body 21, the cross-section of the supporting portion 22 is hook-shaped and has a root portion 221 and a tip portion 222. The root portion 221 is fixed to the connecting main body 21, and the tip portion 222 abuts against the light-transmitting main body 31. The supporting portion 22 will bend to a certain extent when clamping the light-transmitting main body 31. The hook-shaped design can prevent the supporting portion 22 from abutting against the side edge of the light-transmitting main body 31, eliminating the situation of applying supporting stress to the side edge of the light-transmitting main body 31, thereby reducing the breakage of the light-transmitting main body 31.

[0096] In a further setting, the supporting portion 22 is provided with a reinforcing rib 23, and the reinforcing rib 23 extends from the root portion 221 to the tip portion 222 to improve the bending strength of the supporting portion 22. In addition, the supporting portion 22 and the connecting main body 21 can be integrally formed to improve the strength of the connection between the root portion 221 and the connecting main body 21.

[0097] In addition, along the circumferential direction connecting the main body 21, a plurality of supporting parts 22 are arranged in an array; alternatively, the supporting parts 22 are continuous and annular in projection along the first direction. Among them, when the supporting parts 22 are arranged in an array, each supporting part 22 can be bent independently, and the degree of bendable deformation of the supporting part 22 is relatively large, which is suitable for application scenarios where a relatively large clamping force is applied to the light-transmitting main body 31. While the supporting parts 22 are continuous and annular, the connection strength between the supporting parts 22 and the connecting main body 21 is high, the degree of bendable deformation is relatively small, and the root 221 of the supporting part 22 is not easily broken, which is suitable for application scenarios where a relatively small clamping force is applied to the light-transmitting main body 31.

[0098] Among them, the supporting part 22 and the connecting main body 21 are integrally formed. Therefore, the form of the array distribution of the supporting parts 22 can be obtained by processing the continuous supporting parts 22. Specifically, the supporting part 22 and the connecting main body 21 are integrally formed and annularly continuous. According to actual use requirements, a plurality of dividing grooves 25 are processed in the supporting part 22, and the supporting part 22 can be divided into a plurality of parts.

[0099] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0100] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0101] In addition, any combination can be made between various different embodiments of the present invention as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. An explosion-proof lamp, characterized in that: It comprises a main housing (1), an annular housing (2) fastened to the main housing (1), and a light-transmitting plate (3) clamped between the main housing (1) and the annular housing (2), wherein the main housing (1) is provided with an open installation space (11) for internally installing a lighting assembly (4); The light-transmitting plate (3) comprises a light-transmitting body (31) and a limiting portion (32), wherein the limiting portion (32) and the light-transmitting body (31) are made of the same material and are integrally formed, wherein: The light-transmitting body (31) is made of glass or transparent resin material, the light-transmitting body (31) is located outside the installation space (11) and is in contact with the main shell (1) and the annular shell (2) along a first direction, the first direction is parallel to the direction of the clamping force on the light-transmitting plate (3), and there is a gap between the position where the light-transmitting body (31) is in contact with the main shell (1) and the annular shell (2) and the side edge of the light-transmitting body (31) perpendicular to the first direction; The limiting portion (32) is located in the installation space (11) and abuts against a side wall of the installation space (11) along a direction perpendicular to the first direction; At least along the first direction, an elastic sealing layer (6) is provided between the light-transmitting plate (3) and the main housing (1); The annular housing (2) comprises an annular connecting body (21) for being fastened to the main housing (1), and a supporting portion (22) fixedly arranged on the inner side of the annular connecting body (21), wherein the supporting portion (22) abuts against the light-transmitting body (31) along the first direction; Along the annular direction of the connecting body (21), the cross section of the supporting portion (22) is hook-shaped and comprises a root portion (221) and a tip portion (222), the root portion (221) being fixed to the connecting body (21) and the tip portion (222) being abutted against the light-transmitting body (31); Along the annular direction of the connecting body (21), a plurality of the supporting portions (22) are arranged in an array and distributed, and each of the supporting portions (22) can be bent individually.

2. The explosion-proof lamp according to claim 1, characterized in that: The main housing (1) has an annular abutting portion (12) and a blocking portion (13) on its end surface facing the light-transmitting plate (3); the installation space (11) is opened on the inner side of the annular shape of the abutting portion (12); the abutting portion (12) is used to abut against the light-transmitting body (31); the abutting portion (12) is located on the inner side of the annular shape of the blocking portion (13); and a receiving space (5) for filling the elastic sealing layer (6) is formed between the abutting portion (12) and the blocking portion (13); The elastic sealing layer (6) comprises an elastic sealing ring and / or a sealing rubber layer.

3. The explosion-proof lamp according to claim 2, characterized in that: The blocking portion (13) abuts against the light-transmitting body (31), and a distance is provided between the abutting position of the blocking portion (13) and the light-transmitting body (31) and the side edge of the light-transmitting body (31) in a direction perpendicular to the first direction.

4. The explosion-proof lamp according to claim 2, characterized in that: The blocking portion (13) is not in contact with the light-transmitting body (31), and a gap exists between the side edges of the blocking portion (13) and the light-transmitting body (31) in a direction perpendicular to the first direction.

5. The explosion-proof lamp according to claim 4, characterized in that: The blocking portion (13) is projected vertically in the first direction to overlap with the light-transmitting body (31).

6. The explosion-proof lamp according to claim 1, characterized in that: The support portion (22) is provided with a reinforcing rib (23), and the reinforcing rib (23) extends along the root portion (221) to the tip portion (222).

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