Emergency lighting fixture and test control circuit therefor

Abstract

The utility model discloses an emergency lighting lamp and test control circuit thereof relates to lighting technical field. Among them, the emergency lighting lamp, include: a casing, a cylindrical hollow convex part is set up in the casing one side, and is to the illumination direction one side, a hollow connecting piece is partly set in the cylindrical hollow convex part, a protection fixed part is set up in the hollow connecting piece, a photosensitive device is passed and is set in the protection fixed part, a locking piece is set on the hollow connecting piece, and with the outside of cylindrical hollow convex part is set up and is in abutment, and a transparent window. The utility model, solve in the explosion -proof emergency lighting application place, by the safety limit, the conventional intelligence, wireless patrol and examine equipment still need to check the personnel to need to climb the ladder one by one, to the explosion -proof emergency lighting lamp and examine, this mode greatly increased the labor intensity and workload of the checking personnel, the problem of low working efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lighting fixtures, and in particular to an emergency lighting fixture and its test control circuit. Background Technology

[0002] Emergency lighting fixtures mainly include emergency lighting for accidents and emergency exit indicator lights. They are set up to guide trapped people to evacuate or to carry out fire fighting and rescue operations after the normal lighting power is cut off in the event of a fire. In daily life, it is often necessary to inspect emergency lighting fixtures to ensure that they can function properly in an accident.

[0003] While the inspection of conventional emergency lighting fixtures has gradually become intelligent and wireless, conventional intelligent and wireless inspection equipment cannot be used in explosion-proof emergency lighting applications due to safety restrictions. Inspections of such products still require personnel to climb ladders and ascend to inspect each fixture individually. This method significantly increases the workload and labor intensity of inspectors, resulting in low efficiency and certain safety risks. Currently, no effective solution has been proposed to address these problems. Utility Model Content

[0004] Purpose of the utility model: To provide an emergency lighting fixture and its test control circuit, so as to at least solve one of the problems existing in the prior art.

[0005] Technical solution: An emergency lighting fixture, comprising:

[0006] A shell;

[0007] A cylindrical hollow protrusion is provided on one side of the housing, facing the direction of illumination;

[0008] A hollow connector is partially screwed into the cylindrical hollow protrusion;

[0009] A protective fastener is installed inside the hollow connector;

[0010] A photosensitive device is inserted into the protective fixing member;

[0011] A locking element is screwed onto the hollow connector and abuts against the outer surface of the cylindrical hollow protrusion; and

[0012] A transparent window is disposed between the hollow connector and the locking member, and is positioned opposite to the photosensitive device;

[0013] When a detection beam shines on the photosensitive device through the transparent window, the photosensitive device triggers a detection signal to sense and provide feedback on the detection trigger signal in real time.

[0014] Preferably, a connecting plate is provided at the bottom of the housing, and the connecting plate is snapped into the housing.

[0015] Preferably, an indicator light is detachably provided at the bottom of the connecting plate.

[0016] Preferably, the outer surface of the hollow connector is provided with a threaded portion that mates with the inner wall of the cylindrical hollow protrusion.

[0017] Preferably, a waterproof seal is provided between the cylindrical hollow protrusion and the locking member.

[0018] Preferably, the protective fastener is a silicone component.

[0019] Preferably, the cylindrical hollow protrusion, the hollow connector, the protective fixing member, the photosensitive device, the locking member, and the transparent window are arranged at the same center.

[0020] Preferably, a programmable logic controller is also provided inside the housing, and the programmable logic controller is electrically connected to the photosensitive device.

[0021] To achieve the above objectives, according to another aspect of this application, a test control circuit for emergency lighting fixtures is also provided.

[0022] The test control circuit for the emergency lighting fixture according to this application includes the aforementioned emergency lighting fixture;

[0023] It also includes: a power supply circuit, which is connected to a photosensitive detection circuit, which is connected to a programmable logic control circuit, and the programmable logic control circuit is connected to an indicator light circuit.

[0024] Preferably, the photosensitive detection circuit includes: a photosensitive device, wherein the collector of the photosensitive device is connected to one end of a first resistor and a second resistor respectively, and the emitter of the photosensitive device is grounded;

[0025] The other end of the first resistor is connected to the power supply circuit, the other end of the second resistor is connected to the voltage detection point and one end of the first capacitor, and the other end of the first capacitor is grounded.

[0026] The power supply circuit includes: a positive terminal of a battery, which is connected to the anode of a diode, and the cathode of the diode is connected to a power node and the other end of the first resistor, respectively.

[0027] The positive terminal of the battery is connected to one end of the third resistor, and the other end of the third resistor is connected to one end of the fourth resistor and one end of the second capacitor, respectively. The other ends of the fourth resistor and the second capacitor are grounded.

[0028] One end of the third resistor, one end of the fourth resistor, and one end of the second capacitor are all connected to an external input signal interface.

[0029] Beneficial Effects: In this embodiment, a remote sensing detection method is adopted. When a detection beam shines on the photosensitive device through the transparent window, the photosensitive device triggers a sensing detection signal to sense and feedback the detection trigger signal in real time, achieving the purpose of remote control sensing test. This realizes the technical effect of convenient testing and completely avoiding the risk of safety accidents caused by climbing to heights. Furthermore, it solves the technical problem that in explosion-proof emergency lighting application sites, due to safety restrictions, conventional intelligent and wireless inspection equipment cannot be used. The inspection of such explosion-proof emergency lighting products still requires inspectors to climb ladders one by one to inspect the explosion-proof emergency lighting fixtures. This method greatly increases the labor intensity and workload of inspectors, resulting in low work efficiency and certain safety risks. Attached Figure Description

[0030] Figure 1 This is an exploded view of the emergency lighting fixture of this utility model;

[0031] Figure 2 This is a partial exploded view of the emergency lighting fixture of this utility model;

[0032] Figure 3 This is a schematic diagram illustrating the application scenario of the emergency lighting fixture of this utility model;

[0033] Figure 4 This utility model relates to a test control circuit for emergency lighting fixtures; and

[0034] Figure 5 This is another test control circuit for emergency lighting fixtures according to this utility model.

[0035] The attached figures are labeled as follows:

[0036] 10. Shell;

[0037] 20. A cylindrical hollow convex part;

[0038] 30. Hollow connector; 301. Threaded part;

[0039] 40. Protect fasteners;

[0040] 50. Photosensitive devices;

[0041] 60. Locking components;

[0042] 70. Transparent window;

[0043] 80. Connecting plate;

[0044] 90. Indicator lights;

[0045] 100. Waterproof seals;

[0046] 110. Irradiation components. Detailed Implementation

[0047] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0048] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0049] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0050] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0051] like Figure 1-5 As shown, this application relates to emergency lighting fixtures and their test control circuits. Figure 1-3 As shown, the emergency lighting fixture includes: a housing 10; the housing 10 refers to the main structural part of the fixture, which carries all internal functional components; it can protect the internal circuits and devices, and plays a role in structural support and encapsulation.

[0052] A cylindrical hollow protrusion 20 is disposed on one side of the housing 10 and faces the direction of illumination. The hollow protrusion is disposed on one side of the housing 10, is cylindrical, has a hollow internal structure, and faces the direction of illumination (or the direction of light detection). This enables the photosensitive component to be separated from the main housing 10, improving the flexibility of the detection angle. At the same time, it can also reduce the interference of the main lamp illumination and improve the accuracy of photosensitive detection.

[0053] A hollow connector 30 is partially screwed into the cylindrical hollow protrusion 20; and partially inserted and screwed (screw-fixed) into the cylindrical hollow protrusion 20; it can achieve modular disassembly and assembly, which is convenient for maintenance, replacement and adjustment; at the same time, it can also ensure that the position of the photosensitive device 50 is accurately aligned with the light direction.

[0054] A protective fixing member 40 is disposed inside the hollow connector 30; it is installed inside the hollow connector 30 to fix and protect the photosensitive device 50; it can prevent the photosensitive device 50 from being affected by external forces or vibrations and play a role in optical path alignment and electrical isolation.

[0055] A photosensitive device 50 is inserted into the protective fixing member 40; inserted into the protective fixing member 40, it is the core device for detecting the light beam (such as a photoresistor, phototransistor, etc.); it can realize the effect of receiving the light beam and generating a detection signal.

[0056] Of course, remote control methods include, but are not limited to: when conducting inspections, simply use the illumination component 110 to illuminate the inspection window to perform the test. The illumination component 110 can be an explosion-proof flashlight.

[0057] A locking element 60 is screwed onto the hollow connector 30 and abuts against the outer surface of the cylindrical hollow protrusion 20; it is also screwed onto the outside of the hollow connector 30 and abuts against the outer wall of the cylindrical hollow protrusion 20. This enables mechanical locking and positioning of the entire sensing assembly and prevents the assembly from loosening or shifting.

[0058] A transparent window 70 is disposed between the hollow connector 30 and the locking member 60, and is positioned opposite to the photosensitive device 50; it allows the detection beam to penetrate and illuminate the photosensitive device 50, while also providing an explosion-proof function.

[0059] When a detection beam shines through the transparent window 70 onto the photosensitive device 50, the photosensitive device 50 triggers a detection signal to sense and provide feedback on the trigger signal in real time. When a detection beam shines through the transparent window 70 onto the photosensitive device 50, the photosensitive device 50 responds and generates a signal; this signal is used to start the lamp to execute the test program, allowing the user to determine whether the lamp's emergency function is working properly based on the lamp's actions.

[0060] It should be noted that this application can be applied to products including but not limited to: explosion-proof emergency exit indicator lights 90, explosion-proof emergency flying saucer lights, explosion-proof emergency linear industrial and mining lights, explosion-proof emergency floodlights, explosion-proof emergency gas station lights, etc.

[0061] As can be seen from the above description, this application achieves the following technical effects:

[0062] In this embodiment, a remote sensing detection method is adopted. When a detection beam shines on the photosensitive device 50 through the transparent window 70, the photosensitive device 50 triggers a sensing detection signal to sense and feedback the detection trigger signal in real time, thereby achieving the purpose of remote control sensing test. This achieves the technical effect of convenient testing and completely avoiding the risk of safety accidents caused by climbing to heights. It also solves the technical problem that in explosion-proof emergency lighting application sites, conventional intelligent wireless inspection equipment cannot be used due to safety restrictions. The inspection of such explosion-proof emergency lighting products still requires inspectors to climb ladders one by one to inspect the explosion-proof emergency lighting fixtures. This method greatly increases the labor intensity and workload of inspectors, resulting in low work efficiency and certain safety risks.

[0063] Furthermore, a connecting plate 80 is provided at the bottom of the housing 10, and the connecting plate 80 is snapped into the housing 10. This achieves a good connection and fixation effect, and the connection can be made by means of snap-fit ​​mechanisms, including but not limited to, which facilitates assembly and disassembly; it improves the maintainability and flexibility of the equipment, eliminating the need for complete disassembly during maintenance.

[0064] Furthermore, an indicator light 90 is detachably mounted on the bottom of the connecting plate 80. This provides excellent indication, and the modular design of the indicator light 90, independently mounted below the connecting plate 80, allows for easy replacement of damaged indicator light 90 modules and enhances the visibility of the emergency lighting status.

[0065] Furthermore, the outer surface of the hollow connector 30 is provided with a threaded portion 301 that mates with the inner wall of the cylindrical hollow protrusion 20. This allows for a robust, reliable, and detachable connection. Simultaneously, it improves connection strength, prevents loosening due to vibration, facilitates positioning and adjustment of the installation angle, and supports repeated assembly and disassembly without structural damage.

[0066] Furthermore, a waterproof seal 100 is provided between the cylindrical hollow protrusion 20 and the locking member 60. It is understood that this achieves good sealing and waterproofing effects, thereby protecting internal components and extending their service life.

[0067] Furthermore, the protective fastener 40 is a silicone component. It is understood that silicone possesses properties such as elasticity, insulation, temperature resistance, shock absorption, and water resistance; it can be used as a buffer and fixing material for the photosensitive device 50.

[0068] Furthermore, the cylindrical hollow protrusion 20, the hollow connector 30, the protective fixing member 40, the photosensitive device 50, the locking member 60, and the transparent window 70 are arranged concentrically. It is understood that the entire optical / sensing structure is arranged along the same axis, which helps to accurately align the light and ensures that the detection light reaches the photosensitive device 50 directly from the window. This improves the sensitivity and consistency of photosensitive detection and also avoids false detections caused by light refraction and deviation.

[0069] Furthermore, a programmable logic controller is also provided inside the housing 10, and the programmable logic controller is electrically connected to the photosensitive device 50 and the indicator light 90 respectively;

[0070] When the programmable logic controller detects the sensing signal fed back by the photosensitive device 50, the programmable logic controller sends a control signal to control the indicator light 90 to operate, so as to remotely control and test the emergency lighting fixture.

[0071] The controller is responsible for processing signals from the photosensitive device 50 and controlling the indicator light 90 to respond; it also enables logical judgment and program execution (such as remote testing and status feedback).

[0072] like Figure 4-5 As shown, this application also relates to a test control circuit for an emergency lighting fixture, including the aforementioned emergency lighting fixture;

[0073] It also includes: a power supply circuit, which is connected to a photosensitive detection circuit, which is connected to a programmable logic control circuit, and the programmable logic control circuit is connected to an indicator light circuit 90. It is understood that this enables good electrical signal transmission, thereby ensuring good sensing, control, and execution effects.

[0074] Furthermore, the photosensitive detection circuit includes: a photosensitive device CDS1, wherein the collector C of the photosensitive device CDS1 is connected to one end of the first resistor R23 and the second resistor R31 respectively, and the emitter E of the photosensitive device is grounded;

[0075] The other end of the first resistor R23 is connected to the power supply circuit, and the other end of the second resistor R31 is connected to the voltage detection point PT and one end of the first capacitor C12 respectively. The other end of the first capacitor C12 is grounded.

[0076] The power supply circuit includes: a positive terminal of the battery (BAT+), the positive terminal of the battery (BAT+) is connected to the anode of diode D9, and the cathode of diode D9 is connected to the power supply node VCC2 and the other end of the first resistor R23.

[0077] The positive terminal of the battery is connected to one end of the third resistor R30, and the other end of the third resistor R30 is connected to one end of the fourth resistor R32 and one end of the second capacitor C11, respectively. The other ends of the fourth resistor R32 and the second capacitor C11 are grounded.

[0078] One end of the third resistor R30, one end of the fourth resistor R32, and one end of the second capacitor C11 are all connected to the external input signal interface CHG_DET.

[0079] Specifically, the photosensitive device CDS1 (phototransistor or photosensitive triode) has its collector C connected to one end of the first resistor R23 and one end of the second resistor R31; its emitter E is connected to AGND; and its control terminal (photosensitive) has no electrical connection and is controlled to conduct by external light.

[0080] It is important to understand that the circuit is activated after light is detected, thus forming the "light detection" logic;

[0081] When receiving strong light, the CE circuit is turned on, and the voltage is pulled low, thus providing a low-level signal to the MCU.

[0082] When not irradiated, the high-resistivity state → the PT voltage remains at a high level.

[0083] The first capacitor C12 has one end connected to PT (pin 16 of U5) and the other end connected to AGND. It is a filter capacitor that filters out jitter and noise on the PT signal, ensuring the stability of the voltage signal sampled by the MCU.

[0084] The positive terminal of the battery, BAT+, is the power input terminal of the circuit and the source of power; it provides the power supply voltage, which is delivered to VCC2 through diode D9.

[0085] Diode D9 has its anode connected to BAT+ and its cathode connected to VCC2 (one end is also connected to R23 and R31). As a reverse connection protection diode, it prevents current from flowing back from VCC2 to BAT+, thus allowing current to flow unidirectionally from BAT+ to VCC2, protecting the subsequent circuitry.

[0086] The third resistor R30 has one end connected to BAT+ and the other end connected to the node between the fourth resistor R32 and the second capacitor C11 (also connected to CHG_DET). It, along with the four resistors R32, forms a voltage divider network to adjust the CHG_DET signal level. It effectively divides the voltage at the CHG_DET terminal.

[0087] The fourth resistor, R32, has one end connected to the third resistor, R30 (and CHG_DET / C11), and the other end connected to AGND (analog ground). Together with the third resistor, R30 forms a voltage divider to adjust the reference voltage of CHG_DET to ground. It provides a reference voltage or bias condition (indirectly affecting the base voltage of CDS1).

[0088] The voltage detection point PT (pin 16 of U5) is connected to the second resistor R31 and the first capacitor C12 respectively, and is also connected to the collector of the photosensitive device CDS1; the voltage signal output point is used by the MCU to determine whether CDS1 is conducting (whether there is strong light).

[0089] High level: No light (CDS1 off); Low level: Strong light (CDS1 on).

[0090] This utility model also has the following beneficial effects:

[0091] This application utilizes explosion-proof flashlights carried by personnel inspecting explosion-proof sites to illuminate explosion-proof emergency lighting fixtures and inspect their glass windows, thus enabling the inspection of such fixtures. Unlike traditional methods, this design is more convenient and flexible, and most importantly, it completely eliminates the risk of safety accidents caused by working at heights. Furthermore, the explosion-proof flashlights used for this operation are highly accessible and inexpensive.

[0092] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. An emergency lighting fixture, characterized in that, include: A shell (10); A cylindrical hollow protrusion (20) is provided on one side of the housing (10) and faces the direction of illumination; A hollow connector (30) is partially screwed into the cylindrical hollow protrusion (20); A protective fastener (40) is disposed within the hollow connector (30); A photosensitive device (50) is inserted into the protective fixing member (40); A locking member (60) is screwed onto the hollow connector (30) and abuts against the outer side of the cylindrical hollow protrusion (20); and A transparent window (70) is disposed between the hollow connector (30) and the locking member (60), and is disposed opposite to the photosensitive device (50); When a detection beam shines on the photosensitive device (50) through the transparent window (70), the photosensitive device (50) triggers a detection signal to sense and provide feedback on the detection trigger signal in real time.

2. The emergency lighting fixture according to claim 1, characterized in that, A connecting plate (80) is provided at the bottom of the housing (10), and the connecting plate (80) is snapped into the housing (10).

3. The emergency lighting fixture according to claim 2, characterized in that, An indicator light (90) is detachably installed at the bottom of the connecting plate (80).

4. The emergency lighting fixture according to claim 1, characterized in that, The outer surface of the hollow connector (30) is provided with a threaded portion (301) that mates with the inner wall of the cylindrical hollow protrusion (20).

5. The emergency lighting fixture according to claim 1, characterized in that, A waterproof seal (100) is provided between the cylindrical hollow protrusion (20) and the locking member (60).

6. The emergency lighting fixture according to claim 1, characterized in that, The protective fastener (40) is a silicone part.

7. The emergency lighting fixture according to claim 1, characterized in that, The cylindrical hollow protrusion (20), the hollow connector (30), the protective fixing member (40), the photosensitive device (50), the locking member (60), and the transparent window (70) are arranged in the same center.

8. The emergency lighting fixture according to claim 3, characterized in that, The housing (10) is also provided with a programmable logic controller, which is electrically connected to the photosensitive device (50).

9. A test control circuit for emergency lighting fixtures, characterized in that, Includes emergency lighting fixtures as described in any one of claims 1-8; It also includes: a power supply circuit, which is connected to a photosensitive detection circuit, which is connected to a programmable logic control circuit, which is connected to an indicator light (90) circuit.

10. The test control circuit for the emergency lighting fixture according to claim 9, characterized in that, The photosensitive detection circuit includes: a photosensitive device (50), the collector of the photosensitive device (50) is connected to one end of a first resistor and a second resistor respectively, and the emitter of the photosensitive device (50) is grounded; The other end of the first resistor is connected to the power supply circuit, the other end of the second resistor is connected to the voltage detection point and one end of the first capacitor, and the other end of the first capacitor is grounded. The power supply circuit includes: a positive terminal of a battery, which is connected to the anode of a diode, and the cathode of the diode is connected to a power node and the other end of the first resistor, respectively. The positive terminal of the battery is connected to one end of the third resistor, and the other end of the third resistor is connected to one end of the fourth resistor and one end of the second capacitor, respectively. The other ends of the fourth resistor and the second capacitor are grounded. One end of the third resistor, one end of the fourth resistor, and one end of the second capacitor are all connected to an external input signal interface.

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