Explosion-proof lamp

Abstract

The utility model is applicable to the technical field of explosion-proof lamps, and provides an explosion-proof lamp which comprises a heat dissipation module, a shell module, a power supply module and a bolt assembly, the heat dissipation module and the power supply module are fixed on the shell module through the bolt assembly, and the heat dissipation module comprises a radiator, a sealing ring, an explosion-proof light source assembly and a reflective support. The sealing ring is bonded to the radiator and located between the radiator and the anti-explosion light source assembly, the anti-explosion light source assembly and the light reflecting support are fixed to the radiator through the bolt assembly, and the light reflecting support is located below the anti-explosion light source assembly. The shell module comprises a main shell, a light-transmitting part and a support, the light-transmitting part is fixedly installed on the main shell, the support is fixed to the main shell through a bolt assembly, the power module comprises a power cover plate and a driving power source, and the driving power source is fixed to the power cover plate through a bolt assembly.

Description

Technical Field

[0001] This utility model belongs to the field of explosion-proof lighting technology, and in particular relates to an explosion-proof lighting fixture. Background Technology

[0002] Explosion-proof lighting fixtures are designed for use in hazardous locations where flammable gases and dust are present. They prevent internal arcs, sparks, and high temperatures from igniting the surrounding flammable gases and dust, thus meeting explosion-proof requirements. Currently, the light source components of explosion-proof lighting fixtures on the market generally adopt an increased safety explosion-proof design. However, this is not suitable for Zones 0 and 1 of explosion-proof zone classification (where hazardous locations are typically divided into three zones: Zone 0, Zone 1, and Zone 2. Zone 0 refers to locations where hazardous substances are present for extended periods; Zone 1 refers to locations where hazardous substances may be present; and Zone 2 refers to locations where hazardous substances are generally unlikely to be present, only occasionally appearing for short periods under abnormal conditions). Furthermore, the light source components are usually housed within an explosion-proof enclosure, resulting in larger and heavier explosion-proof lighting fixtures with lower explosion-proof test pass rates. Moreover, current explosion-proof lighting fixtures often employ a potting process for explosion protection, but this places high demands on heat dissipation of the light source components, as well as on the selection of adhesives and sealing techniques, significantly increasing production costs and failing to adequately meet customer requirements. Utility Model Content

[0003] The purpose of this utility model is to overcome at least one of the shortcomings of the prior art and provide an explosion-proof lamp with better luminous efficiency, smaller size and weight, better heat dissipation, lower glue requirements, higher explosion-proof test pass rate, lower cost, and can well meet customer requirements.

[0004] In a first aspect, this utility model provides an explosion-proof lighting fixture, including a heat dissipation module, a housing module, a power supply module, and a bolt assembly. The heat dissipation module and the power supply module are fixed to the housing module by the bolt assembly. The heat dissipation module includes a heat sink, a sealing ring, an explosion-proof light source assembly, and a reflector bracket. The sealing ring is bonded to the heat sink and located between the heat sink and the explosion-proof light source assembly. The explosion-proof light source assembly and the reflector bracket are fixed to the heat sink by the bolt assembly, and the reflector bracket is located below the explosion-proof light source assembly. The housing module includes a main housing, a light-transmitting element, and a bracket. The light-transmitting element is installed and fixed to the main housing, and the bracket is fixed to the main housing by the bolt assembly. The power supply module includes a power cover and a driving power supply. The driving power supply is fixed to the power cover by the bolt assembly.

[0005] As a further improvement to this technical solution, the explosion-proof light source assembly includes a lens pressure plate, a lens accessory, and a light source plate. The lens pressure plate is pressed onto the lens accessory, the lens accessory is disposed above the light source plate, and the bolt assembly is sequentially inserted and fastened to the lens pressure plate, the lens accessory, and the light source plate.

[0006] As a further improvement to this technical solution, at least one light source device is provided on the upper surface of the light source plate, and at least one lens attachment is provided on the upper surface of the light source plate and covers the light source device. Each lens attachment has at least one explosion-proof chamber recessed on the lower surface of the light source plate, and each explosion-proof chamber accommodates one light source device. The wall of the explosion-proof chamber and the upper surface of the light source plate form a first explosion-proof sealing structure for accommodating the light source device. The remaining part of the lens attachment, excluding the wall of the explosion-proof chamber, is tightly attached to the light source plate by the bolt assembly and the lens pressure plate to form a second explosion-proof sealing structure. The first and second explosion-proof sealing structures constitute the flame propagation restriction path of the light source device.

[0007] As a further improvement to this technical solution, the main housing includes a first mounting cavity and a second mounting cavity, the heat dissipation module is disposed in the first mounting cavity, and the power supply module is disposed in the second mounting cavity.

[0008] As a further improvement to this technical solution, the housing module also includes wiring terminals and a Glen connector. The wiring terminals are installed in the second mounting cavity, and the Glen connector is installed at the end of the second mounting cavity away from the first mounting cavity.

[0009] As a further improvement to this technical solution, the outer shell module also includes a mesh cover, which is installed in the second mounting cavity and disposed on the outside of the light-transmitting component to protect the light-transmitting component from impact.

[0010] As a further improvement to this technical solution, the bracket is a U-shaped mounting bracket, and is fixedly installed on the side of the second mounting cavity near the first mounting cavity by the bolt assembly. The U-shaped mounting bracket is connected to the main housing through a hinge structure. Adjusting the tightness of the bolt assembly can complete the angle adjustment of the U-shaped mounting bracket within the range of 0° to 180°.

[0011] As a further improvement to this technical solution, the power module also includes a sealing ring, which is attached to the power cover plate.

[0012] As a further improvement to this technical solution, the power supply cover is installed in the second mounting cavity by the bolt assembly. The bolt assembly includes a bolt and a nut that mates with it. The nut has an anti-loosening structure to prevent the bolt from loosening and falling off during use.

[0013] As a further improvement to this technical solution, the power supply cover is provided with an openable and closable wiring cavity, and a sealing ring is pasted on the inner side of the wiring cavity.

[0014] This utility model provides an explosion-proof lighting fixture including a heat dissipation module, a housing module, a power supply module, and a bolt assembly. The heat dissipation module and the power supply module are fixed to the housing module by the bolt assembly. Specifically: the heat dissipation module includes a heat sink, a sealing ring, an explosion-proof light source assembly, and a reflector bracket. The sealing ring is bonded to the heat sink and located between the heat sink and the explosion-proof light source assembly. The explosion-proof light source assembly and the reflector bracket are fixed to the heat sink by the bolt assembly, with the reflector bracket located below the explosion-proof light source assembly. The housing module includes a main housing, a light-transmitting element, and a bracket. The light-transmitting element is installed and fixed to the main housing, and the bracket is fixed to the main housing by the bolt assembly. The power supply module includes a power cover plate and a driving power supply. The driving power supply is fixed to the power cover plate by the bolt assembly. This invention reduces the size and weight of the explosion-proof lighting fixture through a collaborative structural design between the heat dissipation module, the housing module, and the power supply module. By securing each component to its corresponding position with bolts and improving the bonding method and position of the sealing rings, reliance on adhesives is reduced, minimizing sealing problems caused by adhesive aging or failure. The rational layout of the heat sink and reflector bracket in the heat dissipation module, along with the optimized design of the explosion-proof light source components, improves the luminous efficiency and explosion-proof test pass rate of the lighting fixture. This allows the lighting fixture to efficiently dissipate heat and achieve excellent explosion-proof performance, making this invention suitable for Zone 0 and Zone 1 explosion-proof applications. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the explosion-proof lamp provided in the first embodiment of this utility model;

[0017] Figure 2 This is another perspective view of the explosion-proof lamp provided in the first embodiment of this utility model;

[0018] Figure 3 This is an exploded view of the explosion-proof lamp provided in the first embodiment of this utility model;

[0019] Figure 4 This is an exploded view of the single-cavity explosion-proof light source assembly provided by this utility model;

[0020] Figure 5 This is an exploded view of the dual-cavity explosion-proof light source assembly provided by this utility model;

[0021] Figure 6 This is a perspective view of the explosion-proof lamp provided in the second embodiment of this utility model;

[0022] Figure 7 This is an exploded view of the explosion-proof lamp provided in the second embodiment of this utility model;

[0023] Figure 8 This is a perspective view of the explosion-proof lamp provided in the third embodiment of this utility model;

[0024] Figure 9 This is an exploded view of the explosion-proof lamp provided in the third embodiment of this utility model;

[0025] Figure 10 This is a perspective view of the explosion-proof lamp provided in the fourth embodiment of this utility model;

[0026] Figure 11 This is an exploded view of the explosion-proof lamp provided in the fourth embodiment of this utility model; Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] It should be noted that the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to direct setup or connection, or indirect setup or connection through centered components or centered structures.

[0029] Furthermore, in embodiments of this utility model, terms such as "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, or in a conventional placement or usage state. These terms are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure, feature, device, or element referred to must have a specific orientation or positional relationship, nor that it must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0030] The various specific technical features and embodiments described in the detailed embodiments can be combined in any suitable manner without contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the various specific technical features / embodiments in this utility model will not be described separately.

[0031] This utility model provides an explosion-proof lighting fixture. Please refer to [link / reference]. Figures 1 to 11 The explosion-proof lighting fixture 10 includes a heat dissipation module 1, a housing module 2, a power supply module 3, and a bolt assembly 4. The heat dissipation module 1 and the power supply module 3 are fixed to the housing module 2 by the bolt assembly 4. The housing module 2 forms a receiving cavity. The heat dissipation module 1 and the power supply module 3 are installed side-by-side in the receiving cavity by the bolt assembly 4, with the heat dissipation module 1 positioned to the right of the power supply module 3 along the transverse direction of the housing module 2. The outer wall of the housing module 2 covers the heat dissipation module 1 and the power supply module 3 to form an integral encapsulation structure. The heat dissipation module 1 includes a heat sink 11, a sealing ring 12, an explosion-proof light source assembly 13, and a reflector bracket 14. The sealing ring 12 is bonded to the heat sink 11 and is located between the heat sink 11 and the explosion-proof light source assembly 13. The explosion-proof light source assembly 13 and the reflector bracket 14 are fixed to the heat sink 11 by the bolt assembly 4. The reflector bracket 14 is located below the explosion-proof light source assembly 13. The outer casing module 2 includes a main outer casing 21, a bracket 22, and a light-transmitting element 23. The light-transmitting element 23 is mounted and fixed to the main outer casing 21, and the bracket 22 is fixed to the main outer casing 21 by bolt assembly 4. The power supply module 3 includes a drive power supply 31 and a power supply cover plate 32. The drive power supply 31 is fixed to the power supply cover plate 32 by bolt assembly 4.

[0032] The explosion-proof light source component 13 of the explosion-proof lamp 10 of this utility model achieves explosion protection through flameproof design. The heat sink 11 is made of aluminum alloy profile or machined material, and the main housing 21 is made of stainless steel through bending and welding. This not only improves the luminous efficacy and power of the explosion-proof lamp 10, enabling it to efficiently dissipate heat, but also reduces the volume of the explosion-proof light source component 13. Furthermore, the explosion-proof light source component 13 provided by this utility model has a high explosion-proof test pass rate, reducing testing pressure. Moreover, through the coordinated structural design between the heat dissipation module 1, the housing module 2, and the power supply module 3, the weight and overall volume of the explosion-proof lamp 10 are reduced, lowering costs and effectively meeting customer requirements.

[0033] In some alternative embodiments, please refer to Figures 1 to 11The heat dissipation module 1 includes a heat sink 11, a sealing ring 12, an explosion-proof light source assembly 13, and a reflector bracket 14. The heat sink 1 is made of high thermal conductivity aluminum alloy, thereby improving the heat conduction effect of the explosion-proof light source assembly 13. The sealing ring 12 can be directly bonded to the outer ring of the surface of the heat sink 11 facing the explosion-proof light source assembly 13 using adhesive, and is located in the middle of the heat sink 11 and the explosion-proof light source assembly 13. Both the explosion-proof light source assembly 13 and the reflector bracket 14 are fixed to the heat sink 11 by bolt assemblies 4. The reflector bracket 14 is roughly trapezoidal and can be made of a high-reflectivity material, such as aluminum-plated or silver-plated metal, and is located below the explosion-proof light source assembly 13. The reflector bracket 14 is used to improve light utilization and optimize lighting effects. By rationally designing the shape and angle of the reflector bracket 14, the projection angle and distribution range of light can be precisely controlled to achieve different lighting effects, such as floodlighting or spotlighting, to meet the lighting requirements of different locations and work tasks. The reflector bracket 14 also isolates the light source from the external environment, such as preventing dust, moisture and other substances from entering the lamp and affecting the performance of the light source, and reducing potential safety hazards caused by direct exposure of the light source.

[0034] The explosion-proof light source assembly 13 includes a lens plate 131, a lens accessory 132, and a light source plate 133. The lens plate 131 is pressed onto the lens accessory 132, and the lens accessory 132 is positioned above the light source plate 133. The bolt assembly 4 is sequentially inserted and fastened to the lens plate 131, the lens accessory 132, and the light source plate 133.

[0035] The lens plate 131 can be made of stainless steel, and the lens accessory 132 can be made of a hard or soft, high-temperature resistant, high-transmittance material. At least one light source device 134 is provided on the upper surface of the light source plate 133, and the light source device 134 is used to emit light to achieve illumination. At least one lens accessory 132 is provided on the upper surface of the light source plate 133 and covers the light source device 134. Each lens accessory 132 has at least one explosion-proof chamber recessed into its lower surface facing the light source plate 133, and each explosion-proof chamber accommodates one light source device 134. The wall of the explosion-proof chamber and the upper surface of the light source plate 133 form a first explosion-proof sealing structure for accommodating the light source device 134. The remaining part of the lens accessory 132, excluding the wall of the explosion-proof chamber, is tightly attached to the light source plate 134 by bolt assembly 4 and the lens plate 131, forming a second explosion-proof sealing structure. The first and second explosion-proof sealing structures constitute a flame propagation restriction path for the light source device 134. This invention prevents flame propagation outside the explosion-proof enclosure and also prevents flame propagation from the outside into the explosion-proof enclosure, thus achieving excellent explosion-proof performance and making it applicable to Zone 0 and Zone 1 explosion-proof environments. This invention boasts a high explosion-proof test pass rate, good luminous efficiency, small size and weight, and low cost, effectively meeting customer requirements. For ease of understanding, the direction from the light source device 134 to the light source board 133 in this invention is from top to bottom; the upper surface refers to its uppermost end face, and the lower surface refers to its lowermost end face.

[0036] In some optional embodiments, the explosion-proof light source assembly 13 can be configured as a single-cavity assembly or a dual-cavity assembly. In a single-cavity assembly, the upper surface of the light source plate 133 has multiple light source devices 134 arranged side-by-side in a row. Multiple lens attachments 132 are also arranged side-by-side in a row on the upper surface of the light source plate 133, with one lens attachment 132 covering one light source device 134. Each lens attachment 132 has at least one explosion-proof chamber recessed into its lower surface facing the light source plate 133, and each explosion-proof chamber accommodates one light source device 134. In a dual-cavity assembly, the upper surface of the light source plate 133 has multiple light source devices 134 arranged in two rows. Multiple lens attachments 132 are arranged in a row on the upper surface of the light source plate 133, with one lens attachment 132 covering two light source devices 134 in the same row. Each lens attachment 132 has two explosion-proof chambers recessed into its lower surface facing the light source plate 133, arranged in two rows, and each explosion-proof chamber accommodates one light source device 134. In practical applications, the specific selection of the explosion-proof light source component 13 can be made according to actual needs.

[0037] In some alternative embodiments, please refer to Figures 1 to 11The outer casing module 2 includes a main outer casing 21, a bracket 22, and a light-transmitting element 23. The light-transmitting element 23 can be made of tempered light-transmitting material with good thermal stability. The light-transmitting element 23 is installed and fixed inside the main outer casing 21 by adhesive bonding and is fastened by the light-transmitting element pressing plate assembly 24. The bracket 22 is fixed to the side wall of the main outer casing 21 by bolt assembly 4.

[0038] The main housing 21 is generally rectangular and includes a first mounting cavity 211 and a second mounting cavity 212. The first mounting cavity 211 and the second mounting cavity 212 are arranged in parallel, and the second mounting cavity 212 is slightly larger than the first mounting cavity 211. The heat dissipation module 1 is disposed in the first mounting cavity 211, and the power supply module 2 is disposed in the second mounting cavity 212.

[0039] The bracket 22 can be a U-shaped mounting bracket. The U-shaped mounting bracket 22 is fixedly installed on the side of the second mounting cavity 212 near the first mounting cavity 211 via bolt assembly 4. The U-shaped mounting bracket 22 is connected to the main housing 21 via a hinge structure. Adjusting the tightness of the bolt assembly 4 allows for angle adjustment of the U-shaped mounting bracket 22 within the range of 0° to 180°. That is, loosening the bolt assembly 4 installed on the U-shaped mounting bracket 22 allows the U-shaped mounting bracket 22 to be adjusted to a preset angle, and tightening the bolt assembly 4 fixes the U-shaped mounting bracket 22 in the preset position.

[0040] In some alternative embodiments, please refer to Figures 1 to 11 The system includes a drive power supply 31 and a power supply cover 32. The drive power supply 31 is fixed to the power supply cover 32 by bolt assembly 4. Both the drive power supply 31 and the power supply cover 32 are installed in the first mounting cavity 211 of the main housing 21. The power supply cover 32 is used to seal and protect the drive power supply 31, which supplies power to the explosion-proof lighting fixture 10. The power supply cover 32 has an openable and closable wiring cavity, and a sealing ring is affixed to the inside of the wiring cavity. When wiring the lighting fixture, simply loosen the bolt assembly 4 on the power supply cover 32, open the power supply cover 32, and connect the wires in its wiring cavity according to the wiring diagram. After completing the wiring, close the power supply cover 32 and tighten the bolt assembly 4.

[0041] In some alternative embodiments, please refer to Figures 1 to 11The bolt assembly 4 can be a screw, nut, etc. Preferably, the bolt assembly 4 is used to fix the heat dissipation module 1, i.e., the power supply module 2, onto the outer casing module 3. Specifically, the bolt assembly 4 is sequentially inserted and fastened to the lens pressure plate 131, the lens accessory 132, and the light source plate 133. The reflector bracket 14 is fastened to the heat sink 11 by the bolt assembly 4. The U-shaped mounting bracket is fixed to the main outer casing 21 by the bolt assemblies 4 installed on both sides of the bracket. The power supply cover 32 is installed in the first mounting cavity 212 by the bolt assembly 4. The bolt assembly 4 includes a bolt and a nut that mates with it. The nut has an anti-loosening structure to prevent the bolt from loosening and falling off during use. The power supply cover 32 has an openable and closable wiring cavity, and a sealing ring is pasted on the inner side of the wiring cavity.

[0042] In some optional embodiments, the bracket 22 may also be two Y-shaped mounting brackets, arranged opposite to each other. One Y-shaped mounting bracket is fixedly mounted to the end of the second mounting cavity 212 away from the first mounting cavity 211 via bolt assembly 4, and the other Y-shaped mounting bracket is fixedly mounted to the end of the first mounting cavity 211 away from the second mounting cavity 212 via bolt assembly 4. The Y-shaped mounting bracket 2 is connected to the main housing 21 via a hinge structure. Adjusting the tightness of the bolt assembly 4 allows for angle adjustment of the Y-shaped mounting bracket within the range of 0° to 180°. That is, loosening the bolt assembly 4 on the Y-shaped mounting bracket adjusts the Y-shaped mounting bracket to a preset angle, and tightening the bolt assembly 4 fixes the Y-shaped mounting bracket in the preset position.

[0043] In some optional embodiments, the housing module 2 further includes a mesh cover 25, which is mesh-shaped and has the same size as the front of the second mounting cavity 212. The mesh cover 25 is installed in the second mounting cavity 212 and positioned on the outside of the light-transmitting element 23 to reduce the risk of direct impact to the light-transmitting element.

[0044] In some optional embodiments, the housing module 2 includes a terminal block 26 and a Glenn connector 27. The terminal block 26 is installed in the second mounting cavity 212 and located below the drive power supply 31. The Glenn connector 27 is installed on the side wall of the second mounting cavity 212 away from the first mounting cavity 212 and locked in the corresponding position. Three Glenn connectors 27 may be provided, with two arranged in parallel on the right-hand side of the second mounting cavity 212 side wall and the other on the left-hand side of the second mounting cavity 212 side wall. The Glenn connector 27 is used to introduce cables and fix their positions, thereby achieving sealing and explosion-proof functions, preventing external flammable and explosive gases, dust, etc., from entering the interior of the explosion-proof lighting fixture 10 and causing an explosion hazard. Simultaneously, it also prevents dangerous factors such as electrical sparks inside the explosion-proof lighting fixture 10 from leaking into the external hazardous environment, ensuring good explosion-proof and sealing effects.

[0045] In some optional embodiments, the power module 3 further includes a sealing ring 33 and a hinge mounting block, the power module 3 being hinged and fixed to the housing module 2 via the hinge mounting block 33 and the bolt assembly 4. The sealing ring 33 is directly adhered to the outer ring of the power cover plate 32 with adhesive backing, thereby further constituting a flame propagation limiting path for the explosion-proof lamp 10 and further improving the explosion-proof effect.

[0046] In practical applications, the explosion-proof lighting fixture 10 adopts the Ex db eb or Ex eb q and Ex tb explosion-proof design, with a temperature class not exceeding T4 / T130℃. It can be used in Class II Zone 1 and Zone 2 and Class III Zone 21 and Zone 22 explosive atmospheres with ambient temperatures ranging from -40℃ to +60℃, and the protection level meets the IP66 requirements. The explosion-proof lighting fixture 10 is available as a 90W floodlight, a 240W floodlight, a 480W floodlight, and a 240W lighting fixture.

[0047] For ease of understanding, the following are different embodiments illustrating the present invention; however, the present invention is not limited thereto:

[0048] First embodiment:

[0049] Please see Figures 1 to 3 The first embodiment provides a 90W floodlight, which includes a heat dissipation module 1, a housing module 2, a power supply module 3, and a bolt assembly 4. The heat dissipation module 1 and the power supply module 3 are fixed to the housing module 2 by the bolt assembly 4.

[0050] The heat dissipation module 1 includes a heat sink 11, a sealing ring 12, an explosion-proof light source assembly 13, and a reflector bracket 14. The sealing ring 12 is bonded to the outer ring of the heat sink 11 with adhesive and is located in the middle of the heat sink 11 and the explosion-proof light source assembly 13. The explosion-proof light source assembly 13 and the reflector bracket 14 are fixed to the heat sink 11 by bolt assemblies 4. The explosion-proof light source assembly 13 includes a lens pressure plate 131, a lens accessory 132, and a light source plate 133. The lens pressure plate 131 is pressed onto the lens accessory 132, and the lens accessory 132 is positioned above the light source plate 133. The bolt assembly 4 is sequentially inserted and tightened into the lens pressure plate 131, the lens accessory 132, and the light source plate 133. The reflector bracket 14 is located below the explosion-proof light source assembly 13.

[0051] The housing module 2 includes a main housing 21, a U-shaped mounting bracket 22, a light-transmitting element 23, a light-transmitting element clamping assembly 24, a mesh cover 25, a terminal block 26, and a Glen wire connector 27. The main housing 21 includes a first mounting cavity 211 and a second mounting cavity 212. The light-transmitting element 23 is installed and fixed inside the main housing 21 by adhesive and secured by the light-transmitting element clamping assembly 24. The U-shaped mounting bracket 22 is fixed to the main housing 21 by a bolt assembly 4. The mesh cover 25 is located below the light-transmitting element 23 and installed on the front of the second mounting cavity 212 to reduce the risk of direct impact to the light-transmitting element. The terminal block 26 is installed in the second mounting cavity 212, and the Glen wire connector 27 is installed on the side wall of the second mounting cavity 212 away from the first mounting cavity 212 and locked in the corresponding position.

[0052] The power module 3 includes a drive power supply 31 and a power cover 32. The drive power supply 31 is fixed to the power cover 32 by a bolt assembly 4.

[0053] Second embodiment:

[0054] Please see Figures 6 to 7 The second embodiment provides a 240W floodlight, which includes a heat dissipation module 1, a housing module 2, a power supply module 3, and a bolt assembly 4. The heat dissipation module 1 and the power supply module 3 are fixed to the housing module 2 by the bolt assembly 4.

[0055] The heat dissipation module 1 includes a heat sink 11, a sealing ring 12, an explosion-proof light source assembly 13, and a reflector bracket 14. The sealing ring 12 is bonded to the outer ring of the heat sink 11 with adhesive and is located in the middle of the heat sink 11 and the explosion-proof light source assembly 13. The explosion-proof light source assembly 13 and the reflector bracket 14 are fixed to the heat sink 11 by bolt assemblies 4. The explosion-proof light source assembly 13 includes a lens pressure plate 131, a lens accessory 132, and a light source plate 133. The lens pressure plate 131 is pressed onto the lens accessory 132, and the lens accessory 132 is positioned above the light source plate 133. The bolt assembly 4 is sequentially inserted and tightened into the lens pressure plate 131, the lens accessory 132, and the light source plate 133. The reflector bracket 14 is located below the explosion-proof light source assembly 13.

[0056] The housing module 2 includes a main housing 21, a U-shaped mounting bracket 22, a light-transmitting element 23, a light-transmitting element clamping assembly 24, a mesh cover 25, a terminal block 26, and a Glen wire connector 27. The main housing 21 includes a first mounting cavity 211 and a second mounting cavity 212. The light-transmitting element 23 is installed and fixed inside the main housing 21 by adhesive and secured by the light-transmitting element clamping assembly 24. The U-shaped mounting bracket 22 is fixed to the main housing 21 by a bolt assembly 4. The mesh cover 25 is located below the light-transmitting element 23 and installed on the front of the second mounting cavity 212 to reduce the risk of direct impact to the light-transmitting element. The terminal block 26 is installed in the second mounting cavity 212, and the Glen wire connector 27 is installed on the side wall of the second mounting cavity 212 away from the first mounting cavity 212 and locked in the corresponding position.

[0057] The power module 3 includes a drive power supply 31 and a power cover 32. The drive power supply 31 is fixed to the power cover 32 by a bolt assembly 4.

[0058] Third embodiment:

[0059] Please see Figures 8 to 9 The third embodiment provides a 480W floodlight, which includes a heat dissipation module 1, a housing module 2, a power supply module 3, and a bolt assembly 4. The heat dissipation module 1 and the power supply module 3 are fixed to the housing module 2 by the bolt assembly 4.

[0060] The heat dissipation module 1 includes a heat sink 11, a sealing ring 12, an explosion-proof light source assembly 13, and a reflector bracket 14. The sealing ring 12 is bonded to the outer ring of the heat sink 11 with adhesive and is located in the middle of the heat sink 11 and the explosion-proof light source assembly 13. The explosion-proof light source assembly 13 and the reflector bracket 14 are fixed to the heat sink 11 by bolt assemblies 4. The explosion-proof light source assembly 13 includes a lens pressure plate 131, a lens accessory 132, and a light source plate 133. The lens pressure plate 131 is pressed onto the lens accessory 132, and the lens accessory 132 is positioned above the light source plate 133. The bolt assembly 4 is sequentially inserted and tightened into the lens pressure plate 131, the lens accessory 132, and the light source plate 133. The reflector bracket 14 is located below the explosion-proof light source assembly 13.

[0061] The housing module 2 includes a main housing 21, a U-shaped mounting bracket 22, a light-transmitting element 23, a light-transmitting element clamping assembly 24, a mesh cover 25, a terminal block 26, and a Glen wire connector 27. The main housing 21 includes a first mounting cavity 211 and a second mounting cavity 212. The light-transmitting element 23 is installed and fixed inside the main housing 21 by adhesive and secured by the light-transmitting element clamping assembly 24. The U-shaped mounting bracket 22 is fixed to the main housing 21 by a bolt assembly 4. The mesh cover 25 is located below the light-transmitting element 23 and installed on the front of the second mounting cavity 212 to reduce the risk of direct impact to the light-transmitting element. The terminal block 26 is installed in the second mounting cavity 212, and the Glen wire connector 27 is installed on the side wall of the second mounting cavity 212 away from the first mounting cavity 212 and locked in the corresponding position.

[0062] The power module 3 includes a drive power supply 31, a power cover plate 32, and a power cover plate sealing ring 33. The drive power supply 31 is fixed to the power cover plate 32 by bolt assembly 4, and the power cover plate sealing ring 33 is directly pasted to the outer ring of the surface of the power cover plate 32 facing the power supply 31 by adhesive.

[0063] Fourth embodiment:

[0064] Please see Figures 10 to 11 The fourth embodiment provides a 90W lighting fixture, which includes a heat dissipation module 1, a housing module 2, a power supply module 3, and a bolt assembly 4. The heat dissipation module 1 and the power supply module 3 are fixed to the housing module 2 by the bolt assembly 4.

[0065] The heat dissipation module 1 includes a heat sink 11, a sealing ring 12, an explosion-proof light source assembly 13, and a reflector bracket 14. The sealing ring 12 is bonded to the outer ring of the heat sink 11 with adhesive and is located in the middle of the heat sink 11 and the explosion-proof light source assembly 13. The explosion-proof light source assembly 13 and the reflector bracket 14 are fixed to the heat sink 11 by bolt assemblies 4. The explosion-proof light source assembly 13 includes a lens pressure plate 131, a lens accessory 132, and a light source plate 133. The lens pressure plate 131 is pressed onto the lens accessory 132, and the lens accessory 132 is positioned above the light source plate 133. The bolt assembly 4 is sequentially inserted and tightened into the lens pressure plate 131, the lens accessory 132, and the light source plate 133. The reflector bracket 14 is located below the explosion-proof light source assembly 13.

[0066] The housing module 2 includes a main housing 21, a Y-shaped mounting bracket 22, a light-transmitting element 23, a light-transmitting element clamping assembly 24, a mesh cover 25, a terminal block 26, and a Glen wire connector 27. The main housing 21 includes a first mounting cavity 211 and a second mounting cavity 212. The light-transmitting element 23 is installed and fixed inside the main housing 21 by adhesive bonding and secured by the light-transmitting element clamping assembly 24. The Y-shaped mounting bracket 22 is fixed to the main housing 21 by a bolt assembly 4. The mesh cover 25 is located below the light-transmitting element 23 and installed on the front of the second mounting cavity 212 to reduce the risk of direct impact to the light-transmitting element. The terminal block 26 is installed in the second mounting cavity 212, and the Glen wire connector 27 is installed on the side wall of the second mounting cavity 212 away from the first mounting cavity 212 and locked in the corresponding position.

[0067] The power module 3 includes a drive power supply 31 and a power cover 32. The drive power supply 31 is fixed to the power cover 32 by a bolt assembly 4.

[0068] This utility model provides an explosion-proof lighting fixture 10, comprising a heat dissipation module 1, a housing module 2, a power supply module 3, and a bolt assembly 4. The heat dissipation module 1 and the power supply module 3 are fixed to the housing module 2 by the bolt assembly 4. The heat dissipation module 1 includes a heat sink 11, a sealing ring 12, an explosion-proof light source assembly 13, and a reflector bracket 14. The sealing ring 12 is bonded to the heat sink 11 and is located between the heat sink 11 and the explosion-proof light source assembly 13. The explosion-proof light source assembly 13 and the reflector bracket 14 are fixed to the heat sink 11 by the bolt assembly 4. The reflector bracket 14 is located below the explosion-proof light source assembly 13. The housing module 2 includes a main housing 21, a bracket 22, and a light-transmitting element 23. The light-transmitting element 23 is installed and fixed to the main housing 21, and the bracket 22 is fixed to the main housing 21 by the bolt assembly 4. The power supply module 3 includes a driving power supply 31 and a power supply cover plate 32. The driving power supply 31 is fixed to the power supply cover plate 32 by the bolt assembly 4. The explosion-proof lamp 10 of this utility model reduces its size and weight through the coordinated structural design between the heat dissipation module 1, the housing module 2, and the power supply module 3. By securing each component to its corresponding position with bolts 4 and improving the bonding method and position of the sealing ring 12, the reliance on adhesive is reduced, minimizing sealing problems caused by adhesive aging or failure. The rational layout of the heat sink 11 and reflector bracket 14 in the heat dissipation module 1, along with the optimized design of the explosion-proof light source component 13, improves the luminous efficiency and explosion-proof test pass rate of the explosion-proof lamp 10. This allows the explosion-proof lamp 10 to efficiently dissipate heat and achieve a good explosion-proof effect, making this utility model applicable to Zone 0 and Zone 1 explosion-proof applications.

[0069] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An explosion-proof lighting fixture, characterized in that, include: The system includes a heat dissipation module, a housing module, a power supply module, and a bolt assembly. The heat dissipation module and the power supply module are fixed to the housing module by the bolt assembly. The heat dissipation module includes a heat sink, a sealing ring, an explosion-proof light source assembly, and a reflector bracket. The sealing ring is bonded to the heat sink and is located in the middle of the heat sink and the explosion-proof light source assembly. The explosion-proof light source assembly and the reflector bracket are fixed to the heat sink by the bolt assembly. The reflector bracket is located below the explosion-proof light source assembly. The outer casing module includes a main outer casing, a light-transmitting element, and a bracket. The light-transmitting element is installed and fixed to the main outer casing, and the bracket is fixed to the main outer casing by the bolt assembly. The power module includes a power cover and a drive power supply, and the drive power supply is fixed to the power cover by the bolt assembly.

2. The explosion-proof lighting fixture as described in claim 1, characterized in that, The explosion-proof light source assembly includes a lens plate, a lens accessory, and a light source plate. The lens plate is pressed onto the lens accessory, the lens accessory is positioned above the light source plate, and the bolt assembly is sequentially inserted and fastened to the lens plate, the lens accessory, and the light source plate.

3. The explosion-proof lighting fixture as described in claim 2, characterized in that, The upper surface of the light source plate is provided with at least one light source device, and at least one lens attachment is provided on the upper surface of the light source plate and covers the light source device. Each lens attachment has at least one explosion-proof chamber recessed on the lower surface of the light source plate, and each explosion-proof chamber accommodates one light source device. The wall of the explosion-proof chamber and the upper surface of the light source plate form a first explosion-proof sealing structure for accommodating the light source device. The remaining part of the lens attachment, excluding the wall of the explosion-proof chamber, is tightly attached to the light source plate by the bolt assembly and the lens pressure plate to form a second explosion-proof sealing structure. The first and second explosion-proof sealing structures constitute the flame propagation restriction path of the light source device.

4. The explosion-proof lighting fixture as described in claim 1, characterized in that, The main housing includes a first mounting cavity and a second mounting cavity, the heat dissipation module is disposed in the first mounting cavity, and the power supply module is disposed in the second mounting cavity.

5. The explosion-proof lighting fixture as described in claim 4, characterized in that, The housing module also includes wiring terminals and a Glen connector. The wiring terminals are installed in the second mounting cavity, and the Glen connector is installed at the end of the second mounting cavity away from the first mounting cavity.

6. The explosion-proof lighting fixture as described in claim 4, characterized in that, The outer shell module also includes a mesh cover, which is installed in the second mounting cavity and disposed on the outside of the light-transmitting element to protect the light-transmitting element from impact.

7. The explosion-proof lighting fixture as described in claim 4, characterized in that, The bracket is a U-shaped mounting bracket and is fixedly installed on the side of the second mounting cavity near the first mounting cavity by the bolt assembly. The U-shaped mounting bracket is connected to the main housing through a hinge structure. Adjusting the tightness of the bolt assembly can adjust the angle of the U-shaped mounting bracket within the range of 0° to 180°.

8. The explosion-proof lighting fixture as described in claim 1, characterized in that, The power module also includes a sealing ring, which is attached to the power cover plate.

9. The explosion-proof lighting fixture as described in claim 4, characterized in that, The power supply cover is installed in the second mounting cavity via the bolt assembly, which includes a bolt and a mating nut. The nut has an anti-loosening structure to prevent the bolt from loosening and falling off during use.

10. The explosion-proof lighting fixture as described in claim 9, characterized in that, The power supply cover has an openable and closable wiring cavity, and a sealing ring is attached to the inside of the wiring cavity.

Images