Emergency lighting lamp with alarm function

Abstract

The invention provides an emergency lighting lamp with an alarm function, and belongs to the technical field of emergency lighting lamps. The emergency lighting lamp with the alarm function comprises a mounting frame, a lighting lamp and an alarm mechanism, the lighting lamp is mounted in an inner cavity of the mounting frame, the lighting lamp is divided into a front shell and a rear shell, the alarm mechanism is mounted on the surface of the rear shell and comprises an action box, a bimetallic strip and a guide rod, and the action box is fixedly mounted on the surface of the rear shell. A buzzer is installed on the side wall of the action box. By arranging the alarm mechanism, when the surface temperature of the illuminating lamp is higher than 80 DEG C, a bimetallic strip is bent, a copper alloy is bent towards the left side, the bimetallic strip is bent towards the copper alloy side, a push plate is pushed to drive a first contact to synchronously move leftwards, a first spring is compressed, and when the first contact and a second contact are closed, the alarm mechanism is turned off. And the buzzer and the power supply form a complete loop, and sound alarm is given out, so that fire alarm is realized, and normal use of the illuminating lamp under emergency conditions is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency lighting, and in particular to an emergency lighting fixture with an alarm function. Background Art

[0002] Emergency lighting is an emergency lighting equipment used in special environments. It is specially designed to provide lighting while preventing the risk of explosion caused by electrical sparks or high temperature caused by the lamps. Special materials are usually used to effectively prevent damage caused by electrical failures, sparks, heat sources, etc. caused by the lamps themselves or the external environment. Emergency lighting can ensure that necessary lighting is provided when power is interrupted to avoid accidents due to insufficient lighting. In addition, in special environments such as tunnels, subways, and docks, lighting can ensure that even when the power system fails, it can still provide sufficient lighting to ensure the safety of personnel.

[0003] Existing emergency lighting generally controls the operation of emergency lighting through external monitoring devices, such as smoke sensors, but they themselves do not have an alarm function. Once the external monitoring device fails, it will cause the emergency lighting to malfunction, and the normal use of the lighting in an emergency situation cannot be guaranteed. Summary of the invention

[0004] In order to make up for the above deficiencies, the present invention provides an emergency lighting fixture with an alarm function that overcomes the above technical problems or at least partially solves the above problems.

[0005] The present invention is achieved in that:

[0006] The present invention provides an emergency lighting fixture with an alarm function, comprising a mounting frame, a lighting lamp and an alarm mechanism, wherein the lighting lamp is mounted in an inner cavity of the mounting frame, the lighting lamp is divided into a front shell and a rear shell, the front shell and the rear shell are connected by screws, the alarm mechanism is mounted on the surface of the rear shell and is used to issue a fire alarm, and the alarm mechanism comprises:

[0007] An action box, the action box is fixedly mounted on the surface of the rear shell, and a buzzer is installed on the side wall of the action box for sounding an alarm;

[0008] A bimetallic strip, the bimetallic strip is installed in the inner cavity of the action box, the left part of the bimetallic strip is made of a copper alloy material, and the bimetallic strip is made of a nickel-chromium alloy material;

[0009] The guide rods are symmetrically fixedly installed in the inner cavity of the action box, and a push plate is slidably installed between the two guide rods, and the push plate is tightly attached to the side wall of the end of the bimetallic copper alloy material.

[0010] In a preferred embodiment, a lampshade is installed on the surface of the lighting lamp, a plurality of heat sinks are installed between the mounting frame and the front shell, a push rod is fixedly installed on the side wall of the push plate, a first substrate is fixedly installed on one end of the push rod, a first contact is installed on the side wall of the first substrate, and the first contact is electrically connected to the buzzer.

[0011] In a preferred embodiment, a second substrate is fixedly installed in the inner cavity of the action box, a second contact is installed on the side wall of the second substrate, the second contact is electrically connected to an external power supply, and a first spring is installed between the first substrate and the second substrate to drive the push plate to be tightly attached to the side wall of the bimetallic copper alloy material end.

[0012] In a preferred solution, an emergency mechanism is installed on the surface of the lighting lamp for emergency heat dissipation of the lighting lamp. The emergency mechanism includes a pressure box and a nozzle. The pressure box is fixedly installed on the surface of the front shell. The pressure box is filled with liquid nitrogen. A nozzle is installed on the surface of the front shell. A pipeline is connected between the nozzle and the pressure box. A number of spray holes are opened on the side wall of the nozzle for spraying liquid nitrogen onto the surface of the lighting lamp for emergency heat dissipation.

[0013] In a preferred embodiment, a push block is slidably installed in the inner cavity of the pressure box, and a sealing plate is fixedly installed on the side wall of the push block to block the conduction between the pressure box and the nozzle. A through hole is opened on the surface of the sealing plate, and a tension spring is symmetrically installed in the inner cavity of the pressure box. One end of the tension spring is fixedly connected to the push block, and the other end of the tension spring is fixedly connected to the pressure box, so as to drive the sealing plate to move.

[0014] In a preferred embodiment, a reaction box is fixedly mounted on the surface of the action box, sodium bicarbonate is stored in the reaction box, a solvent chamber is provided in the inner cavity of the action box, the solvent chamber is filled with acetic acid solution, a first piston is slidably mounted in the solvent chamber, a second spring is installed in the solvent chamber, one end of the second spring is fixedly connected to the action box, and the other end of the second spring is fixedly connected to the first piston, so as to drive the first piston to move downward.

[0015] In a preferred solution, a connecting rod is fixedly mounted on the bottom of the first piston, a wedge block is fixedly mounted on the bottom of the connecting rod, a driving block is fixedly mounted on the surface of the push rod, and the driving block is wedge-shaped and is used to drive the driving block to move upward.

[0016] In a preferred embodiment, a one-way valve is installed on the surface of the solvent chamber, the other end of the one-way valve is connected to a reaction box, a filter plate is installed in the inner cavity of the reaction box, one end of the reaction box is connected to a first air pipe, the surface of the pressure box is connected to a second air pipe, and a joint is installed between the first air pipe and the second air pipe.

[0017] In a preferred embodiment, an isolation mechanism is installed between the front shell and the rear shell for isolating the lighting lamp from the outside world. The isolation mechanism includes a first sealing ring and a second sealing ring. The first sealing ring and the second sealing ring are fixedly installed on the side wall of the rear shell. The first sealing groove and the second sealing groove are opened on the surface of the front shell for accommodating the first sealing ring and the second sealing ring respectively.

[0018] In a preferred embodiment, a cavity is provided in the front shell, the cavity is filled with insulating liquid, a second piston is slidably installed in the cavity for squeezing the insulating liquid, a third spring is installed in the cavity, one end of the third spring is fixedly connected to the front shell, and the other end of the third spring is fixedly connected to the second piston for driving the second piston to move toward the rear shell, a channel is provided in the inner cavity of the front shell, one end of the channel is connected to the cavity for the passage of insulating liquid, a moving block is slidably installed in the inner cavity of the front shell for controlling the conduction of the channel, one end of the moving block is wedge-shaped, a fourth spring is fixedly installed on the side wall of the moving block for driving the moving block to move toward the first sealing groove, and a through groove is provided on the surface of the moving block for the passage of insulating liquid.

[0019] The present invention provides an emergency lighting fixture with an alarm function, and its beneficial effects include:

[0020] 1. By setting up an alarm mechanism, when the surface temperature of the lighting lamp is higher than 80 degrees Celsius, it can be determined as an abnormal heat situation. There may be an unexpected situation such as fire. The bimetallic strip will bend, and the copper alloy will bend to the left, which will cause the bimetallic strip to bend toward the copper alloy side. The push plate will drive the first contact to move to the left synchronously, and the first spring will be compressed until the first contact and the second contact are closed. The buzzer and the power supply form a complete circuit, and a sound alarm will be issued to realize a fire alarm, thereby ensuring the normal use of the lighting lamp in an emergency.

[0021] 2. By setting up an emergency mechanism, when the bimetallic strip pushes the push plate to move to the left, the driving block can drive the wedge block to drive the first piston to move upward, so that the one-way valve is connected, and the acetic acid solution in the solvent chamber is injected into the reaction box. The acetic acid solution reacts with sodium bicarbonate to produce a large amount of carbon dioxide gas, which is injected into the pressure box through the first air pipe and the second air pipe. The push block is pushed to move left, so that the pipeline between the through hole and the nozzle and the pressure box is connected, and liquid nitrogen can enter the nozzle and be sprayed from the nozzle to the surface of the lighting lamp, so as to perform emergency heat dissipation on the lighting lamp and ensure the emergency use of the lighting lamp under high temperature conditions.

[0022] 3. By setting up an isolation mechanism, the first sealing ring and the second sealing ring on the side wall of the rear shell are respectively aligned with the first sealing groove and the second sealing groove on the surface of the front shell and inserted. First, the moving block is squeezed to move the moving block toward the second sealing groove, so that the through groove and the channel are connected, and as the first sealing ring continues to be inserted, the second piston will be squeezed downward, so that the insulating liquid in the cavity is injected from the channel to between the first sealing ring and the second sealing ring, and the front shell and the rear shell are further sealed to prevent the arc generated inside the lighting lamp from igniting the combustible gas in the external air, thereby ensuring the safe use of the lighting lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those skilled in the art, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 is a front perspective view provided by an embodiment of the present invention;

[0025] Figure 2 A rear perspective view provided for an embodiment of the present invention;

[0026] Figure 3 A side view of an embodiment of the present invention is provided;

[0027] Figure 4 A cross-sectional view of an action box provided for an embodiment of the present invention;

[0028] Figure 5 A side cross-sectional view of an embodiment of the present invention is provided;

[0029] Figure 6 The embodiments of the present invention provide Figure 5 Enlarged view of point A in the middle;

[0030] Figure 7 A cross-sectional view of a pressure box provided for an embodiment of the present invention;

[0031] Figure 8 The embodiments of the present invention provide Figure 7 Enlarged view of point B in the middle;

[0032] Fig. 9 A top view of a cross-sectional view of an embodiment of the present invention;

[0033] Fig.10 The embodiments of the present invention provide Fig. 9 Enlarged view of point C in the middle;

[0034] Fig.11An exploded view provided for an embodiment of the present invention;

[0035] Fig.12 The embodiments of the present invention provide Fig.11 Enlarged view of point D in the middle.

[0036] In the figure: 1, mounting frame; 2, lighting lamp; 21, front shell; 22, rear shell; 3, lampshade; 4, heat sink; 5, alarm mechanism; 501, action box; 502, buzzer; 503, bimetallic strip; 504, guide rod; 505, push plate; 506, push rod; 507, first substrate; 508, first contact; 509, second substrate; 510, second contact; 511, first spring; 6, emergency mechanism; 601, pressure box; 602, nozzle; 603, push block; 604, sealing plate; 605, through hole; 606, tension spring; 607, reaction box ; 608, solvent chamber; 609, first piston; 610, second spring; 611, connecting rod; 612, wedge block; 613, drive block; 614, one-way valve; 615, filter plate; 616, first air pipe; 617, second air pipe; 618, joint; 7, isolation mechanism; 701, first sealing ring; 702, second sealing ring; 703, first sealing groove; 704, second sealing groove; 705, cavity; 706, second piston; 707, third spring; 708, channel; 709, moving block; 710, fourth spring; 711, through groove. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Reference Figure 1-Figure 12 As shown, the present invention provides a technical solution: an emergency lighting fixture with an alarm function, comprising a mounting frame 1, a lighting lamp 2 and an alarm mechanism 5, the lighting lamp 2 is mounted in the inner cavity of the mounting frame 1, the lighting lamp 2 is divided into a front shell 21 and a rear shell 22, the front shell 21 and the rear shell 22 are connected by screws, a lampshade 3 is mounted on the surface of the lighting lamp 2, a plurality of heat sinks 4 are mounted between the mounting frame 1 and the front shell 21 for heat dissipation of the lighting lamp 2, the alarm mechanism 5 is mounted on the surface of the rear shell 22 for issuing a fire alarm, the alarm mechanism 5 comprises an action box 501, a bimetallic strip 503 and a guide rod 504, the action box 501 is fixedly mounted on the surface of the rear shell 22, a buzzer 502 is mounted on the side wall of the action box 501 for issuing an alarm.

[0039] Reference Figure 1-Figure 7 As shown, in a preferred embodiment, the bimetallic strip 503 is installed in the inner cavity of the action box 501, the left part of the bimetallic strip 503 is made of a copper alloy material, and the bimetallic strip 503 is made of a nickel-chromium alloy material. As the temperature rises, the copper alloy material with a larger expansion coefficient will expand more than the nickel-chromium alloy material with a smaller expansion coefficient, causing the bimetallic strip 503 to bend, and the copper alloy will bend to the left, causing the bimetallic strip 503 to bend toward the copper alloy side, and the guide rods 504 are symmetrically fixedly installed in the inner cavity of the action box 501, and a push plate 505 is slidably installed between the two guide rods 504, and the push plate 505 is tightly attached to the side wall of the copper alloy end of the bimetallic strip 503, and a push rod 506 is fixedly installed on the side wall of the push plate 505, and a first push rod 506 is fixedly installed at one end of the push rod 506 Substrate 507, a first contact 508 is installed on the side wall of the first substrate 507, and the first contact 508 is electrically connected to the buzzer 502. The lighting lamp 2 usually uses LED as a light source, which has relatively low heat and emits less heat. The surface temperature during operation is generally around 60 degrees Celsius to 80 degrees Celsius, and the bimetallic strip 503 of nickel-chromium alloy / copper alloy is suitable for use in an environment of 80 degrees Celsius to 200 degrees Celsius. Therefore, when the surface temperature of the lighting lamp 2 is higher than 80 degrees Celsius, it can be determined as an abnormal heat situation, and there may be an unexpected situation such as fire, then the bimetallic strip 503 will bend, and the copper alloy will bend to the left, which will cause the bimetallic strip 503 to bend to the copper alloy side, pushing the push plate 505 to drive the first contact 508 to move to the left synchronously.

[0040] Reference Figure 1-Figure 7 As shown, in a preferred embodiment, a second substrate 509 is fixedly installed in the inner cavity of the action box 501, and a second contact 510 is installed on the side wall of the second substrate 509. The second contact 510 is electrically connected to an external power supply. A first spring 511 is installed between the first substrate 507 and the second substrate 509, and is used to drive the push plate 505 to be tightly attached to the side wall of the copper alloy material end of the bimetallic strip 503. As the push plate 505 drives the first contact 508 to continue to move to the left, the first spring 511 is compressed until the first contact 508 and the second contact 510 are closed, and the buzzer 502 forms a complete circuit with the power supply, and a sound alarm is issued to realize a fire alarm, thereby ensuring the normal use of the lighting lamp 2 in an emergency situation.

[0041] In a preferred embodiment, the lighting lamp 2 usually uses LED as a light source, which has relatively low heat and emits less heat. The surface temperature during operation is generally around 60 degrees Celsius to 80 degrees Celsius, and the nickel-chromium alloy / copper alloy bimetallic strip 503 is suitable for use in an environment of 80 degrees Celsius to 200 degrees Celsius. Therefore, when the surface temperature of the lighting lamp 2 is higher than 80 degrees Celsius, it can be determined that there is an abnormal heat condition, and there may be an unexpected situation such as fire. The bimetallic strip 503 will bend, and the copper alloy will bend to the left, causing the bimetallic strip 503 to bend toward the copper alloy side, pushing the push plate 505 to drive the first contact 508 to move synchronously to the left, and the first spring 511 is compressed until the first contact 508 and the second contact 510 are closed. The buzzer 502 and the power supply form a complete circuit, and a sound alarm is issued to realize a fire alarm, thereby ensuring the normal use of the lighting lamp 2 in an emergency situation.

[0042] Reference Figure 1-Figure 8 As shown, in a preferred embodiment, an emergency mechanism 6 is installed on the surface of the lighting lamp 2 for emergency heat dissipation of the lighting lamp 2 to prevent the lighting lamp 2 from being unable to be used normally due to excessively high temperature when a fire occurs. The emergency mechanism 6 includes a pressure box 601 and a nozzle 602. The pressure box 601 is fixedly installed on the surface of the front shell 21. The pressure box 601 is filled with liquid nitrogen for emergency cooling of the lighting lamp 2. A nozzle 602 is installed on the surface of the front shell 21. A pipeline is connected between the nozzle 602 and the pressure box 601. A plurality of spray holes are opened on the side wall of the nozzle 602 for spraying liquid nitrogen onto the surface of the lighting lamp 2 for emergency heat dissipation.

[0043] Reference Figure 1-Figure 8 As shown, in a preferred embodiment, a push block 603 is slidably installed in the inner cavity of the pressure box 601, and a sealing plate 604 is fixedly installed on the side wall of the push block 603 for blocking the conduction between the pressure box 601 and the nozzle 602. A through hole 605 is opened on the surface of the sealing plate 604, and a tension spring 606 is symmetrically installed in the inner cavity of the pressure box 601. One end of the tension spring 606 is fixedly connected to the push block 603, and the other end of the tension spring 606 is fixedly connected to the pressure box 601, and is used to drive the sealing plate 604 to move. In normal working state, under the action of the tension spring 606, the push block 603 is driven to move right, so that the sealing plate 604 blocks the pipeline between the pressure box 601 and the nozzle 602, and liquid nitrogen cannot be sprayed out from the nozzle 602.

[0044] Reference Figure 1-Figure 8As shown, in a preferred embodiment, a reaction box 607 is fixedly installed on the surface of the action box 501, and sodium bicarbonate is stored in the reaction box 607. A solvent chamber 608 is opened in the inner cavity of the action box 501, and the solvent chamber 608 is filled with acetic acid solution. A first piston 609 is slidably installed in the solvent chamber 608, and a second spring 610 is installed in the solvent chamber 608. One end of the second spring 610 is fixedly connected to the action box 501, and the other end of the second spring 610 is fixedly connected to the first piston 609 for driving the first piston 609 to move downward. A connecting rod 611 is fixedly installed at the bottom of the first piston 609, and the bottom of the connecting rod 611 is fixed A wedge block 612 is installed, and a driving block 613 is fixedly installed on the surface of the push rod 506. The driving block 613 is wedge-shaped and is used to drive the driving block 613 to move upward. When the surface temperature of the lighting lamp 2 is higher than 80 degrees Celsius, the bimetallic strip 503 pushes the push plate 505 to move to the left, and the driving block 613 can drive the wedge block 612 to drive the first piston 609 to move upward, so that the one-way valve 614 is turned on, and the acetic acid solution in the solvent chamber 608 is injected into the reaction box 607, and the acetic acid solution reacts with sodium bicarbonate to produce a large amount of carbon dioxide gas, and as the temperature rises, the reaction will be further accelerated, accelerating the production of carbon dioxide gas.

[0045] Reference Figure 1-Figure 8 As shown, in a preferred embodiment, a one-way valve 614 is installed on the surface of the solvent chamber 608, and the other end of the one-way valve 614 is connected to the reaction box 607 for injecting acetic acid solution into the sodium bicarbonate solution. A filter plate 615 is installed in the inner cavity of the reaction box 607, and one end of the reaction box 607 is connected to a first air pipe 616, and the surface of the pressure box 601 is connected to a second air pipe 617, and a joint 618 is installed between the first air pipe 616 and the second air pipe 617.

[0046] In a preferred embodiment, when the surface temperature of the lighting lamp 2 is higher than 80 degrees Celsius and is determined to be a thermal abnormality, and there may be an unexpected situation such as fire, the bimetallic strip 503 pushes the push plate 505 to move leftward, and the driving block 613 can drive the wedge block 612 to drive the first piston 609 to move upward, so that the one-way valve 614 is connected, and the acetic acid solution in the solvent chamber 608 is injected into the reaction box 607, and the acetic acid solution reacts with sodium bicarbonate to produce a large amount of carbon dioxide gas, which is injected into the pressure box 601 through the first air pipe 616 and the second air pipe 617, pushing the push block 603 to move leftward, so that the through hole 605 and the pipeline between the nozzle 602 and the pressure box 601 are connected, and liquid nitrogen can enter the nozzle 602 and be sprayed from the nozzle to the surface of the lighting lamp 2, so as to perform emergency heat dissipation on the lighting lamp 2 and ensure the emergency use of the lighting lamp 2 under high temperature conditions.

[0047] Reference Figure 1-Figure 12As shown, in a preferred embodiment, an isolation mechanism 7 is installed between the front shell 21 and the rear shell 22, which is used to isolate the lighting lamp 2 from the outside world and prevent the arc generated inside the lighting lamp 2 from igniting the combustible gas in the external air. For example, in places such as petrochemicals and coal mines, any electrical equipment that has sparks or arcs may cause explosions or fires; the isolation mechanism 7 includes a first sealing ring 701 and a second sealing ring 702, and the first sealing ring 701 and the second sealing ring 702 are fixedly installed on the side wall of the rear shell 22. The surface of the front shell 21 is provided with a first sealing groove 703 and a second sealing groove 704, which are respectively used to accommodate the first sealing ring 701 and the second sealing ring 702. During installation, the first sealing ring 701 and the second sealing ring 702 on the side wall of the rear shell 22 are respectively aligned with the first sealing groove 703 and the second sealing groove 704 on the surface of the front shell 21 and inserted, and then fastened with bolts.

[0048] Reference Figure 1-Figure 12 As shown, in a preferred embodiment, a cavity 705 is provided in the front shell 21, and the cavity 705 is filled with insulating liquid. A second piston 706 is slidably installed in the cavity 705 for squeezing the insulating liquid. A third spring 707 is installed in the cavity 705, and one end of the third spring 707 is fixedly connected to the front shell 21, and the other end of the third spring 707 is fixedly connected to the second piston 706 for driving the second piston 706 to move toward the rear shell 22. A channel 708 is provided in the inner cavity of the front shell 21, and one end of the channel 708 is connected to the cavity 705 for the passage of insulating liquid. A moving block 709 is slidably installed in the inner cavity of the front shell 21 for controlling the conduction of the channel 708. One end of the moving block 709 is wedge-shaped, and a fourth spring 709 is fixedly installed on the side wall of the moving block 709. The spring 710 is used to drive the moving block 709 to move toward the first sealing groove 703. A through groove 711 is provided on the surface of the moving block 709 for the passage of insulating liquid. When the first sealing ring 701 is inserted into the first sealing groove 703, the moving block 709 is first squeezed to move the squeezing block 709 toward the second sealing groove 704, so that the through groove 711 is connected with the channel 708. As the first sealing ring 701 continues to be inserted, the second piston 706 is squeezed downward, so that the insulating liquid in the cavity 705 is injected from the channel 708 between the first sealing ring 701 and the second sealing ring 702, and the front shell 21 and the rear shell 22 are further sealed to prevent the arc generated inside the lighting lamp 2 from igniting the combustible gas in the external air, thereby ensuring the safe use of the lighting lamp 2.

[0049] In a preferred embodiment, during installation, the first sealing ring 701 and the second sealing ring 702 on the side wall of the rear shell 22 are respectively aligned with the first sealing groove 703 and the second sealing groove 704 on the surface of the front shell 21 and inserted. First, the moving block 709 is squeezed to move the moving block 709 toward the second sealing groove 704, so that the through groove 711 and the channel 708 are connected. As the first sealing ring 701 continues to be inserted, the second piston 706 will be squeezed downward, so that the insulating liquid in the cavity 705 is injected from the channel 708 between the first sealing ring 701 and the second sealing ring 702, and the front shell 21 and the rear shell 22 are further sealed to prevent the arc generated inside the lighting lamp 2 from igniting the combustible gas in the external air, thereby ensuring the safe use of the lighting lamp 2.

[0050] Specifically, the working principle of this emergency lighting fixture with alarm function is: during installation, the first sealing ring 701 and the second sealing ring 702 on the side wall of the rear shell 22 are respectively aligned with the first sealing groove 703 and the second sealing groove 704 on the surface of the front shell 21 and inserted, and the moving block 709 is first squeezed to move the moving block 709 toward the second sealing groove 704, so that the through groove 711 and the channel 708 are connected, and as the first sealing ring 701 continues to be inserted, the second piston 706 will be squeezed downward, so that the insulating liquid in the cavity 705 is injected from the channel 708 between the first sealing ring 701 and the second sealing ring 702, and the front shell 21 and the rear shell 22 are further sealed to prevent the arc generated inside the lighting lamp 2 from igniting the combustible gas in the external air, thereby ensuring the safe use of the lighting lamp 2.

[0051] The lighting lamp 2 usually uses LED as a light source, which has relatively low heat and emits less heat. The surface temperature during operation is generally around 60 degrees Celsius to 80 degrees Celsius, and the nickel-chromium alloy / copper alloy bimetallic strip 503 is suitable for use in an environment of 80 degrees Celsius to 200 degrees Celsius. Therefore, when the surface temperature of the lighting lamp 2 is higher than 80 degrees Celsius, it can be determined that there is a thermal abnormality and there may be an unexpected situation such as a fire. The bimetallic strip 503 will bend, and the copper alloy will bend to the left, causing the bimetallic strip 503 to bend toward the copper alloy side, pushing the push plate 505 to drive the first contact 508 to move synchronously to the left, and the first spring 511 is compressed until the first contact 508 and the second contact 510 are closed. The buzzer 502 and the power supply form a complete circuit, issuing a sound alarm, realizing a fire alarm, and ensuring the normal use of the lighting lamp 2 in an emergency situation.

[0052] When the surface temperature of the lighting lamp 2 is higher than 80 degrees Celsius and is determined to be a thermal abnormality, and there may be an unexpected situation such as fire, the bimetallic strip 503 pushes the push plate 505 to move leftward, and the driving block 613 can drive the wedge block 612 to drive the first piston 609 to move upward, so that the one-way valve 614 is connected, and the acetic acid solution in the solvent chamber 608 is injected into the reaction box 607, and the acetic acid solution reacts with sodium bicarbonate to produce a large amount of carbon dioxide gas, which is injected into the pressure box 601 through the first air pipe 616 and the second air pipe 617, pushing the push block 603 to move leftward, so that the through hole 605 and the pipeline between the nozzle 602 and the pressure box 601 are connected, and liquid nitrogen can enter the nozzle 602 and be sprayed from the nozzle to the surface of the lighting lamp 2, so as to perform emergency heat dissipation on the lighting lamp 2 and ensure the emergency use of the lighting lamp 2 under high temperature conditions.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An emergency lighting fixture with alarm function, characterized in that: The invention comprises a mounting frame (1), a lighting lamp (2) and an alarm mechanism (5), wherein the lighting lamp (2) is mounted in the inner cavity of the mounting frame (1), the lighting lamp (2) is divided into two parts, a front shell (21) and a rear shell (22), the front shell (21) and the rear shell (22) are connected by screws, the alarm mechanism (5) is mounted on the surface of the rear shell (22) and is used to issue a fire alarm, and the alarm mechanism (5) comprises: An action box (501), the action box (501) is fixedly mounted on the surface of the rear housing (22), and a buzzer (502) is mounted on the side wall of the action box (501) for issuing an alarm; A bimetallic strip (503), the bimetallic strip (503) being installed in the inner cavity of the action box (501), the left portion of the bimetallic strip (503) being made of a copper alloy material, and the bimetallic strip (503) being made of a nickel-chromium alloy material; The guide rods (504) are symmetrically fixedly installed in the inner cavity of the action box (501), and a push plate (505) is slidably installed between the two guide rods (504). The push plate (505) is tightly attached to the side wall of the copper alloy material end of the bimetallic strip (503).

2. The emergency lighting fixture with alarm function according to claim 1, characterized in that: A lampshade (3) is installed on the surface of the lighting lamp (2); a plurality of heat sinks (4) are installed between the mounting frame (1) and the front shell (21); a push rod (506) is fixedly installed on the side wall of the push plate (505); a first substrate (507) is fixedly installed on one end of the push rod (506); a first contact (508) is installed on the side wall of the first substrate (507); and the first contact (508) is electrically connected to the buzzer (502).

3. The emergency lighting fixture with alarm function according to claim 2, characterized in that: A second substrate (509) is fixedly installed in the inner cavity of the action box (501), and a second contact (510) is installed on the side wall of the second substrate (509). The second contact (510) is electrically connected to an external power supply. A first spring (511) is installed between the first substrate (507) and the second substrate (509) for driving the push plate (505) to be tightly attached to the side wall of the copper alloy material end of the bimetallic strip (503).

4. The emergency lighting fixture with alarm function according to claim 2, characterized in that: An emergency mechanism (6) is installed on the surface of the lighting lamp (2) for emergency heat dissipation of the lighting lamp (2). The emergency mechanism (6) comprises a pressure box (601) and a nozzle (602). The pressure box (601) is fixedly installed on the surface of the front shell (21). The pressure box (601) is filled with liquid nitrogen. The surface of the front shell (21) is installed with a nozzle (602). A pipeline is connected between the nozzle (602) and the pressure box (601). The side wall of the nozzle (602) is provided with a plurality of spray holes for spraying liquid nitrogen onto the surface of the lighting lamp (2) for emergency heat dissipation.

5. The emergency lighting fixture with alarm function according to claim 4, characterized in that: A push block (603) is slidably installed in the inner cavity of the pressure box (601), and a sealing plate (604) is fixedly installed on the side wall of the push block (603) for blocking the conduction between the pressure box (601) and the nozzle (602). A through hole (605) is opened on the surface of the sealing plate (604), and a tension spring (606) is symmetrically installed in the inner cavity of the pressure box (601), one end of the tension spring (606) is fixedly connected to the push block (603), and the other end of the tension spring (606) is fixedly connected to the pressure box (601), so as to drive the sealing plate (604) to move.

6. The emergency lighting fixture with alarm function according to claim 5, characterized in that: A reaction box (607) is fixedly mounted on the surface of the action box (501), and sodium bicarbonate is stored in the reaction box (607). A solvent chamber (608) is provided in the inner cavity of the action box (501), and the solvent chamber (608) is filled with acetic acid solution. A first piston (609) is slidably mounted in the solvent chamber (608), and a second spring (610) is installed in the solvent chamber (608). One end of the second spring (610) is fixedly connected to the action box (501), and the other end of the second spring (610) is fixedly connected to the first piston (609), so as to drive the first piston (609) to move downward.

7. The emergency lighting fixture with alarm function according to claim 6, characterized in that: A connecting rod (611) is fixedly mounted on the bottom of the first piston (609), a wedge block (612) is fixedly mounted on the bottom of the connecting rod (611), and a driving block (613) is fixedly mounted on the surface of the push rod (506). The driving block (613) is wedge-shaped and is used to drive the driving block (613) to move upward.

8. The emergency lighting fixture with alarm function according to claim 7, characterized in that: A one-way valve (614) is installed on the surface of the solvent chamber (608), and the other end of the one-way valve (614) is connected to the reaction box (607). A filter plate (615) is installed in the inner cavity of the reaction box (607). One end of the reaction box (607) is connected to a first air pipe (616). The surface of the pressure box (601) is connected to a second air pipe (617), and a joint (618) is installed between the first air pipe (616) and the second air pipe (617).

9. The emergency lighting fixture with alarm function according to claim 1, characterized in that: An isolation mechanism (7) is installed between the front shell (21) and the rear shell (22) for isolating the lighting lamp (2) from the outside world. The isolation mechanism (7) comprises a first sealing ring (701) and a second sealing ring (702). The first sealing ring (701) and the second sealing ring (702) are fixedly installed on the side wall of the rear shell (22). A first sealing groove (703) and a second sealing groove (704) are provided on the surface of the front shell (21) for accommodating the first sealing ring (701) and the second sealing ring (702), respectively.

10. The emergency lighting fixture with alarm function according to claim 9, characterized in that: The front shell (21) is provided with a cavity (705), the cavity (705) is filled with insulating liquid, a second piston (706) is slidably installed in the cavity (705) for squeezing the insulating liquid, a third spring (707) is installed in the cavity (705), one end of the third spring (707) is fixedly connected to the front shell (21), and the other end of the third spring (707) is fixedly connected to the second piston (706) for driving the second piston (706) to move toward the rear shell (22), and the inner cavity of the front shell (21) is provided with a A channel (708) is provided, one end of the channel (708) is connected to the cavity (705) for the passage of insulating liquid, a moving block (709) is slidably installed in the inner cavity of the front shell (21) for controlling the conduction of the channel (708), one end of the moving block (709) is wedge-shaped, a fourth spring (710) is fixedly installed on the side wall of the moving block (709) for driving the moving block (709) to move in the direction of the first sealing groove (703), and a through groove (711) is provided on the surface of the moving block (709) for the passage of insulating liquid.

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