Explosion-proof emergency lamp

Abstract

The utility model relates to the technical field of emergency lamps, in particular to an explosion-proof emergency lamp which comprises a shell and a pressing frame arranged on the shell in a covering mode, the shell comprises a light source base for installing a light source assembly and a power source base for installing a power source assembly, one side edge of the power source base and one side edge of the light source base are connected and integrally formed, and a power source cover plate is arranged on the power source base in a covering mode. A wiring cavity is formed in the power supply base, a power supply cavity is formed in the side face, facing the wiring cavity, of the power supply cover plate, a wire channel is formed between the bottom of the light source base and the inner wall of the wiring cavity, a wire connecting the light source assembly and the power supply assembly is arranged in the wire channel, threaded holes are formed in the two sides of the power supply base, and pressing nuts for fixing the wire are in threaded connection in the threaded holes. The LED lamp has the advantages that the power source base is independently arranged outside the light source base, so that the size of the light source base is reduced, and therefore the size of the shell is reduced, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of emergency lighting technology, specifically to an explosion-proof emergency light. Background Technology

[0002] Explosion-proof emergency lights are designed to guide trapped personnel to evacuate or to facilitate firefighting and rescue operations when normal lighting power is cut off in the event of a safety accident, explosion, or fire. Patent application number 201310362223.8 discloses an LED explosion-proof fire emergency light, comprising a housing with an opening, a cover over the opening of the housing, and a transparent component installed within a stepped portion of the cover. Gaps exist between the periphery of the transparent component and the sidewall of the stepped portion, and these gaps surround the periphery of the transparent component. These gaps are filled with sealant, allowing the transparent component, the cover, and the housing to form an explosion-proof cavity. The explosion-proof cavity houses a light guide plate, multiple LED light strips, an indicator film, an indicator light board, a driver board, a battery, and a terminal block. This design results in a thicker housing, increasing its volume and consequently raising production costs. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an explosion-proof emergency light that addresses the shortcomings of the prior art by separating the power supply base from the light source base to reduce the volume of the light source base, thereby reducing the volume of the housing and lowering production costs.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an explosion-proof emergency light, comprising a housing and a pressure frame covering the housing, wherein the pressure frame has a viewing window in the middle, and a light source assembly and a power supply assembly are disposed inside the housing. The light source assembly includes a light guide plate, a light transmission plate, and an LED light strip, wherein the LED light strip and the light guide plate are disposed below the light transmission plate, and the light transmission plate is located at the viewing window of the pressure frame. The housing includes a light source holder for mounting the light source assembly and a power supply holder for mounting the power supply assembly, wherein one side of the power supply holder is connected to one side of the light source holder, and the two are integrally formed. The power base is equipped with a power cover plate, and the power base has a wiring cavity inside. The power cavity is located on one side of the power cover plate facing the power cavity. The power assembly includes a power circuit board installed at the bottom of the wiring cavity, a battery installed at the bottom of the power cavity, and a status indicator light. A wire channel is provided between the bottom of the light source base and the inner wall of the wiring cavity. The wire channel contains wires connecting the light source assembly and the power assembly. Threaded holes are provided on both sides of the power base. The wall of the threaded hole is an explosion-proof threaded mating surface. A clamping nut for fixing the wire is threaded into the threaded hole. The wire is connected to the power circuit board.

[0005] The present invention, possessing the above-mentioned features, reduces the volume of the light source holder by separating it from the light source holder, thereby reducing the volume of the housing and lowering production costs; the power supply holder and the light source holder are integrally molded, reducing die-casting costs while reducing the number of parts and assembly processes, making the overall structure of the lamp more compact and easier to install and arrange; a wire channel is provided to connect the light source component and the power supply component, ensuring orderly wire arrangement and avoiding problems such as short circuits and wear caused by messy wiring; the wire channel is located inside the housing to ensure sealing and explosion-proof effects; the hole walls of the threaded holes on both sides of the power supply holder are explosion-proof threaded mating surfaces, which, when combined with the clamping nut, can effectively prevent the flames and high temperatures generated by internal explosions from spreading to the outside, meeting explosion-proof requirements.

[0006] A further feature of this invention is that the diameter of the upper inner wall of the wiring cavity is larger than the diameter of the lower inner wall, forming a stepped surface between them. When the power cover is placed on the power socket, the outer peripheral wall of the power cavity and the upper inner wall are in contact to form an explosion-proof surface. A gap is left between the end face of the power cavity and the stepped surface. The inner wall of the wiring cavity extends upward until a first annular protrusion is formed on the end face of the power socket. The power cover is provided with an annular groove for the first annular protrusion to be inserted. The annular groove is located on the outer periphery of the power cavity. When the power cover is placed on the power socket, a sealing space for the installation of a sealing ring is formed between the end face of the first annular protrusion and the bottom of the annular groove.

[0007] The present invention, which has the above-mentioned features, achieves the explosion-proof function of the power socket by setting a stepped surface in the wiring cavity to cooperate with the outer peripheral wall of the power supply cavity to form an explosion-proof surface; the sealing space formed by the first annular boss and the annular groove provides a precise installation position for the sealing ring, ensuring the sealing effect, preventing dust, moisture and other impurities from entering the interior of the power socket and affecting the normal operation of the power components, enhancing the protective performance of the lamp and extending its service life.

[0008] A further feature of this invention is that the light source holder includes a base, the upper surface of which has a first concave cavity for accommodating both a light guide plate and an LED strip, and a second concave cavity for accommodating a light-transmitting plate outside the first concave cavity. The cavity wall of the first concave cavity extends upward until it forms a second annular protrusion at the bottom of the second concave cavity. The light-transmitting plate is placed on the second annular protrusion. When the pressure frame is installed on the light source holder, the inner ring of the pressure frame presses against the light-transmitting plate. The bottom of the second concave cavity surrounds the second annular protrusion, and a glue injection gap is formed between the cavity wall and bottom of the second concave cavity and the outer peripheral surface of the second annular protrusion.

[0009] The present invention, possessing the above-mentioned features, comprises: a first concave cavity disposed within a second concave cavity, such that the light guide plate and LED strip are both embedded at the bottom of the light source holder; a second annular protrusion provides stable support for the light-transmitting plate; and a pressure frame presses the light-transmitting plate onto the light guide plate, minimizing light loss from the light guide plate and ensuring the brightness of the lamp. Furthermore, this installation structure ensures stable installation of the light-transmitting plate, light guide plate, and LED strip, guaranteeing stable lighting performance. A gap is left for injecting adhesive to form an explosion-proof surface, achieving the explosion-proof function of the light source holder and also providing a sealing function to prevent dust, moisture, etc., from entering the interior of the light source holder, thus extending its service life.

[0010] A further feature of this invention is that the bottom of the power supply cavity is provided with two spaced-apart battery holders. Each battery holder includes two opposing cylindrical pedestals with an arc-shaped groove between them. A hoop plate is detachably connected to the battery holder to fix the battery in the arc-shaped groove. The hoop plate includes two wing plates detachably connected to the cylindrical pedestals and an arc-shaped plate connecting the two wing plates. The arc-shaped plate and the arc-shaped groove are joined to form a space for accommodating the battery.

[0011] The present invention, which has the above features, has the following characteristics: the battery holder and the clamp plate facilitate the installation and removal of the battery; the battery holder is set inside the power supply cover, which reduces the volume of the wiring cavity; the arc-shaped groove and the clamp plate are set to adapt to the shape of the battery, so that the battery is installed firmly and the battery is prevented from falling or shifting.

[0012] A further feature of this invention is that: the bottom of the power supply cavity is provided with a light-transmitting groove for embedding an explosion-proof glass sheet, the bottom of the light-transmitting groove is provided with a light-transmitting hole, a glass pressure plate is detachably connected to the indicator light groove, the glass pressure plate is pressed on the explosion-proof glass sheet, an indicator light groove for placing a status indicator light is provided at its center, a circuit board fixing frame is detachably connected to the glass pressure plate, and an indicator light circuit board connected to the status indicator light is installed on the circuit board fixing frame.

[0013] The present invention, which has the above-mentioned features, can protect the status indicator light from the influence of the external environment by setting a light-transmitting groove, an explosion-proof glass sheet, and a glass pressure plate, while allowing the light of the status indicator light to pass through smoothly. The setting of the explosion-proof glass sheet meets the explosion-proof requirements of the status indicator light and ensures that the entire lamp can meet the explosion-proof requirements.

[0014] A further feature of this invention is that the bottom of the first cavity is provided with a plurality of guide protrusions, wherein the guide protrusions are arranged in a group at fixed intervals and side by side.

[0015] The present invention, which has the above-mentioned features, has a guiding boss that guides the wires connected to the light guide plate, making the wires more neatly and aesthetically pleasingly distributed.

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0018] Figure 2 This is an exploded view of an embodiment of the present utility model.

[0019] Figure 3 This is a schematic diagram of the shell structure of an embodiment of the present utility model.

[0020] Figure 4 This is a schematic diagram of the power supply cover plate in an embodiment of the present utility model.

[0021] Figure 5 This is a schematic diagram of the power supply cover and some power supply components in an embodiment of the present utility model.

[0022] Figure 6 This is a cross-sectional view of an embodiment of the present utility model. Detailed Implementation

[0023] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0024] like Figure 1-6The explosion-proof emergency light shown includes a housing 1 and a pressure frame 2 covering the housing 1. The pressure frame 2 has a viewing window 21 in the middle. The housing 1 houses a light source assembly and a power supply assembly. The light source assembly includes a light guide plate 3, a light transmission plate 4, and an LED light strip 5. The LED light strip 5 and the light guide plate 3 are located below the light transmission plate 4. The light transmission plate 4 has an indicator mark and is located at the viewing window 21 of the pressure frame 2. The housing 1 includes a light source holder 11 for mounting the light source assembly and a power supply holder 12 for mounting the power supply assembly. One side of the power supply holder 12 is connected to one side of the light source holder 11, and the two are integrally formed. A power supply cover 6 is provided on the power supply holder 12. The power supply holder 12 has a wiring cavity 121 inside, and the power supply cover 6 faces the wiring cavity 121. A power supply cavity 61 is provided on one side of the wiring cavity 121. The power supply assembly includes a power circuit board 7 installed at the bottom of the wiring cavity 121, a battery 8 installed at the bottom of the power supply cavity 61, and a status indicator light (not shown in the figure). A wire channel 13 is provided between the bottom of the light source holder 11 and the inner wall of the wiring cavity 121. A wire (not shown in the figure) connecting the light source assembly and the power supply assembly is provided in the wire channel 13. Threaded holes 122 are provided on both sides of the power supply holder 12. The hole wall of the threaded hole 122 is an explosion-proof threaded mating surface. A clamping nut (not shown in the figure) for fixing the wire is threadedly connected in the threaded hole 122. A threaded explosion-proof structure is formed between the clamping nut and the threaded hole 122. The wire (not shown in the figure) is connected to the power circuit board 7.

[0025] The upper inner wall diameter of the wiring cavity 121 is larger than the lower inner wall diameter, forming a stepped surface 123 between them. When the power cover plate 6 is placed on the power socket 12, the outer peripheral wall of the power cavity 61 and the upper inner wall are in contact to form an explosion-proof surface 62. With the cooperation of the threaded explosion-proof structure of the clamping nut and the threaded hole, an explosion-proof cavity is formed between the power socket and the power cover plate. A gap is left between the end face of the power cavity 61 and the stepped surface. The inner wall of the wiring cavity 121 extends upward until a first annular boss 124 is formed on the end face of the power socket 12. The power cover plate 6 is provided with an annular groove 63 for the first annular boss 124 to be inserted. The annular groove 63 is located on the outer periphery of the power cavity 61. When the power cover plate 6 is placed on the power socket 12, a sealing space for the installation of the sealing ring 9 is formed between the end face of the first annular boss 124 and the bottom of the annular groove 63.

[0026] The light source holder 11 includes a base 111. The upper surface of the base 111 is provided with a first cavity 112 that accommodates both the light guide plate 3 and the LED light strip 5. Outside the first cavity 112, there is a second cavity 113 that accommodates the light-transmitting plate 4. The cavity wall of the first cavity 112 extends upward until it forms a second annular protrusion 114 at the bottom of the second cavity 113. The light-transmitting plate 4 is placed on the second annular protrusion 114. When the pressure frame 2 is installed on the light source holder 11, the inner ring of the pressure frame 2 presses on the light-transmitting plate 4. The bottom of the second cavity 113 surrounds the second annular protrusion 114. A glue injection gap 115 is formed between the cavity wall and bottom of the second cavity 113 and the outer peripheral surface of the second annular protrusion 114. Glue is filled into the glue injection gap to form an explosion-proof surface, so that an explosion-proof cavity is formed between the first cavity and the second cavity. Several guide protrusions 1121 are evenly distributed at the bottom of the first cavity 112. The guide protrusions 1121 are arranged in groups with a fixed interval.

[0027] The bottom of the power supply cavity 61 is provided with two spaced-apart battery holders 64. Each battery holder 64 includes two opposing cylindrical pedestals 641. An arc-shaped groove 642 is provided between the two cylindrical pedestals 641. A clamp plate 10 is detachably connected to the battery holder 64 to fix the battery 8 in the arc-shaped groove 642. The clamp plate 10 includes two wing plates 101 detachably connected to the cylindrical pedestals 641 and an arc-shaped plate 102 connecting the two wing plates 101. The arc-shaped plate 102 and the arc-shaped groove 642 are joined to form a space for accommodating the battery 8.

[0028] The bottom of the power supply cavity 61 is provided with a light-transmitting groove 65 for embedding an explosion-proof glass sheet 20. The bottom of the light-transmitting groove 65 is provided with a light-transmitting hole 651. A glass pressure plate 30 is detachably connected to the light-transmitting groove 65. The glass pressure plate 30 is pressed on the explosion-proof glass sheet 20. An indicator light groove 31 for placing a status indicator light is provided at the center of the glass pressure plate 30. A circuit board fixing bracket 40 is detachably connected to the glass pressure plate 30. An indicator light circuit board (not shown in the figure) connected to the status indicator light is installed on the circuit board fixing bracket 40.

[0029] The power supply assembly, including the power circuit board, battery, and status indicator light, is installed inside the power supply socket. The light source assembly, including the light guide plate, light-transmitting plate, and LED light strip, is installed inside the light source socket. A wire channel is provided between the power supply socket and the light source socket for installing wires to connect the light source assembly and the power supply assembly. This structural design reduces the volume of the housing, thereby lowering production costs. A glue injection gap is formed between the cavity wall and bottom of the second recess within the light source socket and the outer peripheral surface of the second annular boss. Glue is filled into the glue injection gap to form an explosion-proof surface, creating an explosion-proof cavity between the first and second recesses. The outer peripheral wall of the power supply cavity and the upper... The inner walls of the components adhere to each other to form an explosion-proof surface. Combined with the threaded explosion-proof structure of the clamping nut and threaded hole, an explosion-proof cavity is formed between the power supply base and the power supply cover. This type of explosion-proof structure is a pure explosion-proof structure. Pure explosion-proof structure products have no requirements for internal components, while increased safety explosion-proof structures must be equipped with non-ignition components or components with low heat generation. Intrinsically safe explosion-proof structures have current-limiting and energy-limiting components. Pure explosion-proof structures have a wide range of applications. The conversion of ordinary products into explosion-proof products is relatively simple and easy to implement. Pure explosion-proof products have a robust shell, are corrosion-resistant, and have a long service life. The shell of pure explosion-proof products is relatively simple and easy to install in the early stage and maintain in the later stage.

Claims

1. An explosion-proof emergency light, comprising a housing and a pressure frame covering the housing, wherein the pressure frame has a viewing window in the middle, a light source assembly and a power supply assembly are disposed inside the housing, the light source assembly includes a light guide plate, a light transmission plate and an LED light strip, the LED light strip and the light guide plate are disposed below the light transmission plate, and the light transmission plate is located at the viewing window of the pressure frame, characterized in that: The housing includes a light source holder for mounting a light source assembly and a power supply holder for mounting a power supply assembly. One side of the power supply holder is connected to one side of the light source holder, and the two are integrally formed. A power supply cover is provided on the top of the power supply holder, and a wiring cavity is provided inside the power supply holder. The power supply cavity is located on the side of the power supply cover facing the wiring cavity. The power supply assembly includes a power circuit board installed at the bottom of the wiring cavity, a battery installed at the bottom of the power supply cavity, and a status indicator light. A wire channel is provided between the bottom of the light source holder and the inner wall of the wiring cavity. A wire connecting the light source assembly and the power supply assembly is provided in the wire channel. Threaded holes are provided on both sides of the power supply holder. The hole walls of the threaded holes are explosion-proof threaded mating surfaces. A clamping nut for fixing the wire is threaded into the threaded hole, and the wire is connected to the power circuit board.

2. The explosion-proof emergency light according to claim 1, characterized in that: The upper inner wall diameter of the wiring cavity is larger than the lower inner wall diameter, forming a stepped surface between them. When the power cover is placed on the power socket, the outer peripheral wall of the power cavity and the upper inner wall are in contact to form an explosion-proof surface. A gap is left between the end face of the power cavity and the stepped surface. The inner wall of the wiring cavity extends upward until a first annular boss is formed on the end face of the power socket. The power cover is provided with an annular groove for the first annular boss to be inserted. The annular groove is located on the outer periphery of the power cavity. When the power cover is placed on the power socket, a sealing space for the installation of a sealing ring is formed between the end face of the first annular boss and the bottom of the annular groove.

3. An explosion-proof emergency light according to claim 1 or 2, characterized in that: The light source holder includes a base. The upper surface of the base is provided with a first concave cavity for accommodating both a light guide plate and an LED light strip. Outside the first concave cavity is a second concave cavity for accommodating a light-transmitting plate. The cavity wall of the first concave cavity extends upward until it forms a second annular protrusion at the bottom of the second concave cavity. The light-transmitting plate is placed on the second annular protrusion. When the pressure frame is installed on the light source holder, the inner ring of the pressure frame presses against the light-transmitting plate. The bottom of the second concave cavity surrounds the second annular protrusion. An injection gap is formed between the cavity wall and bottom of the second concave cavity and the outer peripheral surface of the second annular protrusion.

4. An explosion-proof emergency light according to claim 1 or 2, characterized in that: The bottom of the power supply cavity is provided with two spaced-apart battery holders. Each battery holder includes two opposing cylindrical pedestals with an arc-shaped groove between them. A hoop plate is detachably connected to the battery holder to fix the battery in the arc-shaped groove. The hoop plate includes two wing plates detachably connected to the cylindrical pedestals and an arc-shaped plate connecting the two wing plates. The arc-shaped plate and the arc-shaped groove are joined to form a space for accommodating the battery.

5. An explosion-proof emergency light according to claim 4, characterized in that: The bottom of the power supply cavity is provided with a light-transmitting groove for embedding an explosion-proof glass sheet. The bottom of the light-transmitting groove is provided with a light-transmitting hole. A glass pressure plate is detachably connected to the light-transmitting groove. The glass pressure plate is pressed onto the explosion-proof glass sheet. An indicator light groove for placing a status indicator light is provided at the center of the glass pressure plate. A circuit board fixing frame is detachably connected to the glass pressure plate. An indicator light circuit board connected to the status indicator light is installed on the circuit board fixing frame.

6. The explosion-proof emergency light according to claim 3, characterized in that: The bottom of the first cavity is evenly distributed with a number of guide protrusions, wherein the guide protrusions are arranged in a group and side by side at a fixed interval.

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