Lighting interlock circuits, lighting systems and disinfection equipment

Abstract

This utility model relates to the field of lighting control technology, specifically to a lighting interlock circuit, a lighting system, and a disinfection device. The lighting interlock circuit includes: a lighting circuit, an ultraviolet (UV) lamp circuit, and a switch interlock unit. The lighting circuit includes: a lighting switch and a lighting lamp; the UV lamp circuit includes: a UV switch and a UV lamp. The first terminals of the lighting switch and the UV switch are connected to the live wire. The first input terminal of the switch interlock unit is connected to the second terminal of the lighting switch, the second input terminal of the switch interlock unit is connected to the second terminal of the UV switch, the first output terminal of the switch interlock unit is connected to the first terminal of the lighting lamp, and the second output terminal of the switch interlock unit is connected to the first terminal of the UV lamp. The second terminals of the lighting lamp and the UV lamp are connected to the neutral wire. When the lighting switch is closed, the switch interlock unit connects the lighting circuit and disconnects the UV lamp circuit; simultaneously, when the UV switch is closed, it connects the UV lamp circuit and disconnects the lighting circuit.

Description

Technical Field

[0001] This utility model relates to the field of lighting control technology, and in particular to a lighting interlock circuit, a lighting system, and a disinfection device. Background Technology

[0002] In recent years, ultraviolet (UV) disinfection technology has entered a stage of large-scale application. UV lamps, with their advantages of requiring no chemical agents, leaving no residue, and having high sterilization efficiency, have become core disinfection equipment in fields such as healthcare, food processing, and public services. However, UV radiation is highly irritating and damaging to human biological tissues, and the degree of harm is directly related to the intensity of irradiation and the duration of exposure. Short-term, close-range contact can cause burns to the surface of the skin, irritate the respiratory mucosa, and induce discomfort symptoms such as coughing, sore throat, and chest tightness. Long-term, repeated exposure may even increase the risk of skin lesions.

[0003] Currently, mainstream ultraviolet (UV) lamps and ordinary lighting systems on the market generally use physical isolation and warning signs. However, theoretically, lighting and UV lamps can still be turned on simultaneously. If the UV lamp is accidentally turned on while ordinary lighting is on, it is difficult to detect in time. In scenarios of misoperation, personnel are exposed to UV radiation without warning, posing a safety hazard.

[0004] The above content is only used to help understand the technical solution of this utility model and does not represent an admission that the above content is prior art. Utility Model Content

[0005] The main purpose of this utility model is to provide a lamp interlock circuit, a lighting system, and a disinfection device, aiming to solve the technical problem in the prior art that the common occurrence of accidental operation scenarios where ordinary lighting and ultraviolet lamps are turned on at the same time.

[0006] In a first aspect, this utility model provides a lamp interlock circuit, which includes: a lighting circuit, an ultraviolet lamp circuit, and a switch interlock unit; The lighting circuit includes: a lighting switch and a lighting lamp; The ultraviolet lamp circuit includes: an ultraviolet switch and an ultraviolet lamp; The first terminals of both the lighting switch and the ultraviolet switch are connected to the live wire. The first input terminal of the switch interlock unit is connected to the second terminal of the lighting switch. The second input terminal of the switch interlock unit is connected to the second terminal of the ultraviolet switch. The first output terminal of the switch interlock unit is connected to the first terminal of the lighting lamp. The second output terminal of the switch interlock unit is connected to the first terminal of the ultraviolet lamp. The second terminals of both the lighting lamp and the ultraviolet lamp are connected to the neutral wire. The switch interlocking unit is used to close the connection path between the first input terminal and the first output terminal to conduct the lighting circuit when the lighting switch is closed, and to disconnect the connection path between the second input terminal and the second output terminal to cut off the ultraviolet lamp circuit.

[0007] Optionally, the switch interlocking unit is further configured to close the connection path between the second input terminal and the second output terminal to conduct the ultraviolet lamp circuit when the ultraviolet switch is closed, and to disconnect the connection path between the first input terminal and the first output terminal to cut off the lighting lamp circuit.

[0008] Optionally, the switch interlocking unit includes: a first AC contactor and a second AC contactor; The second end of the lighting switch is connected to the first end of the lighting lamp via the normally closed contact of the second AC contactor and the normally open contact of the first AC contactor in sequence. The second end of the ultraviolet switch is connected to the first end of the ultraviolet lamp via the normally closed contact of the first AC contactor and the normally open contact of the second AC contactor in sequence. The power supply terminal of the first AC contactor is located between the normally closed contact of the second AC contactor and the normally open contact of the first AC contactor. The power supply terminal of the second AC contactor is located between the normally closed contact of the first AC contactor and the normally open contact of the second AC contactor.

[0009] Optionally, when the lighting switch is in the closed state, the normally closed contact of the second AC contactor is closed, the normally open contact of the first AC contactor is closed, the normally closed contact of the first AC contactor is open, and the normally open contact of the second AC contactor is open.

[0010] Optionally, when the ultraviolet switch is in the closed state, the normally closed contact of the first AC contactor is closed, the normally open contact of the second AC contactor is closed, the normally closed contact of the second AC contactor is open, and the normally open contact of the first AC contactor is open.

[0011] Optionally, both the lighting switch and the ultraviolet switch are in the off state, the normally closed contact of the first AC contactor is closed, the normally open contact of the second AC contactor is open, the normally closed contact of the second AC contactor is closed, and the normally open contact of the first AC contactor is open.

[0012] Optionally, both the first AC contactor and the second AC contactor have their normally closed contacts reset and close after the power supply is lost.

[0013] Optionally, both the lighting switch and the ultraviolet switch are mechanically interlocked switches; When the lighting switch is in the closed state, the ultraviolet switch is in the locked state; When the ultraviolet switch is in the closed state, the lighting switch is in the locked state.

[0014] Secondly, this utility model provides a lighting system, which includes: the lamp interlock circuit described above.

[0015] Thirdly, this utility model provides a disinfection device, which includes: the lighting system described above.

[0016] This utility model provides a lamp interlock circuit, a lighting system, and a disinfection device. The lamp interlock circuit includes a lighting circuit, an ultraviolet lamp circuit, and a switch interlock unit. The lighting circuit includes a lighting switch and a lighting lamp. The ultraviolet lamp circuit includes an ultraviolet switch and an ultraviolet lamp. The first terminals of both the lighting switch and the ultraviolet switch are connected to the live wire. The first input terminal of the switch interlock unit is connected to the second terminal of the lighting switch, and the second input terminal of the switch interlock unit is connected to the second terminal of the ultraviolet switch. The first output terminal of the switch interlock unit is connected to the first terminal of the lighting lamp, and the second output terminal of the switch interlock unit is connected to the first terminal of the ultraviolet lamp. The second terminals of both the lighting lamp and the ultraviolet lamp are connected to the neutral wire. The switch interlock unit is used to close the connection between the first input terminal and the first output terminal to conduct the lighting circuit when the lighting switch is closed, and to disconnect the connection between the second input terminal and the second output terminal to cut off the ultraviolet lamp circuit. By utilizing the interlocking function of the switch interlocking unit, the ultraviolet lamp circuit is forced to be in an open or cut-off state when the lighting switch is closed. This ensures that the power supply circuits of the two lamps cannot be physically connected simultaneously under any operating sequence and state, thereby improving the stability and safety of ultraviolet lamp use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the first embodiment of the lamp interlock circuit of this utility model; Figure 2 This is a schematic diagram of the second embodiment of the lamp interlock circuit of this utility model; Figure 3 This is a schematic diagram of the lighting circuit conduction structure in the second embodiment of the lighting interlock circuit of this utility model; Figure 4This is a schematic diagram of the ultraviolet lamp circuit conduction structure in the second embodiment of the lamp interlock circuit of this utility model; Figure 5 This is a schematic diagram of the lamp disconnection structure in the second embodiment of the lamp interlock circuit of this utility model.

[0019] Explanation of icon numbers: 10. Switch interlocking unit; SW1, lighting switch; SW2, ultraviolet switch; L1, lighting lamp; L2, ultraviolet lamp; KM1, first AC contactor; KM2, second AC contactor.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly. Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0022] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of the first embodiment of the lamp interlock circuit of this utility model, based on Figure 1 A lamp interlock circuit is proposed.

[0023] In this embodiment, the lamp interlock circuit includes: a lighting circuit, an ultraviolet lamp circuit, and a switch interlock unit 10. The lighting circuit includes: a lighting switch SW1 and a lighting lamp L1; the ultraviolet lamp circuit includes: an ultraviolet switch SW2 and an ultraviolet lamp L2.

[0024] Specifically, the first terminals of the lighting switch SW1 and the ultraviolet switch SW2 are both connected to the live wire (L). The first input terminal of the switch interlocking unit 10 is connected to the second terminal of the lighting switch SW1, the second input terminal of the switch interlocking unit 10 is connected to the second terminal of the ultraviolet switch SW2, the first output terminal of the switch interlocking unit 10 is connected to the first terminal of the lighting lamp L1, the second output terminal of the switch interlocking unit 10 is connected to the first terminal of the ultraviolet lamp L2, and the second terminals of the lighting lamp L1 and the ultraviolet lamp L2 are both connected to the neutral wire.

[0025] It should be noted that when the lighting switch SW1 is closed, the switch interlock unit 10 can close the connection path between the first input terminal and the first output terminal to conduct the lighting circuit, and disconnect the connection path between the second input terminal and the second output terminal to cut off the ultraviolet lamp circuit.

[0026] It should be understood that the lighting circuit and the ultraviolet lamp circuit are connected in parallel between the live wire and the neutral wire, and the failure of any one lamp will not affect the normal operation of the other lamp. The lighting switch SW1 and the ultraviolet switch SW2 can be switching elements with circuit conduction and cutoff functions, such as push-button switches or toggle switches, etc., without specific limitations in this embodiment. The switch interlocking unit can be a component with multi-circuit interlocking control function, such as a relay, contactor, or PLC controller. In its multi-circuit setting, one circuit is in the conducting state (i.e., conduction between the first input terminal and the first output terminal), and the remaining circuits are in the cutoff state (i.e., cutoff between the second input terminal and the second output terminal). This can be achieved by connecting normally closed and normally open contacts of relays and contactors in series, or by using a PLC controller's instruction to detect one switch's open signal and lock the other switch's open signal. To prevent accidental activation of the ultraviolet switch SW2 after the lighting lamp L1 is turned on, the ultraviolet lamp circuit is forcibly disconnected by the switch interlock unit 10 when the lighting switch SW1 is closed. At this time, the ultraviolet lamp L2 will not be lit regardless of whether the ultraviolet switch SW2 is triggered.

[0027] Furthermore, to prevent accidental activation of the lighting switch SW1 after turning on the ultraviolet lamp L2, which would also prevent the observation of the ultraviolet lamp's status, the switch interlock unit 10 can also close the connection path between the second input terminal and the second output terminal to conduct the ultraviolet lamp circuit when the ultraviolet switch SW2 is closed, and disconnect the connection path between the first input terminal and the first output terminal to cut off the lighting lamp circuit. Therefore, when the ultraviolet switch SW2 is closed, the lighting lamp circuit is forcibly disconnected by the switch interlock unit 10, and the lighting lamp L1 will not be lit regardless of whether the lighting switch SW1 is triggered.

[0028] Understandably, to further prevent accidental operation of the switch, the UV switch SW2 can be placed in a dedicated area (with a specially designed control panel) separate from the lighting switch SW1 and affixed with a prominent warning label. Alternatively, the UV switch SW2 can be operated with a special key, or designed as a dedicated switch with a shape and color significantly different from ordinary switches to enhance its identifiability and prevent accidental operation.

[0029] In this embodiment, the lamp interlock circuit includes: a lighting circuit, an ultraviolet lamp circuit, and a switch interlock unit. The lighting circuit includes: a lighting switch and a lighting lamp. The ultraviolet lamp circuit includes: an ultraviolet switch and an ultraviolet lamp. The first terminals of both the lighting switch and the ultraviolet switch are connected to the live wire. The first input terminal of the switch interlock unit is connected to the second terminal of the lighting switch, and the second input terminal of the switch interlock unit is connected to the second terminal of the ultraviolet switch. The first output terminal of the switch interlock unit is connected to the first terminal of the lighting lamp, and the second output terminal of the switch interlock unit is connected to the first terminal of the ultraviolet lamp. The second terminals of both the lighting lamp and the ultraviolet lamp are connected to the neutral wire. The switch interlock unit is used to close the connection between the first input terminal and the first output terminal to conduct the lighting circuit when the lighting switch is closed, and to disconnect the connection between the second input terminal and the second output terminal to cut off the ultraviolet lamp circuit. By utilizing the interlocking function of the switch interlock unit, when the lighting switch is closed, the ultraviolet lamp circuit is forced to be in an open and cut-off state, ensuring that the power supply circuits of the two lamps cannot be physically connected simultaneously under any operating sequence and state, thereby improving the stability and safety of the ultraviolet lamp.

[0030] Reference Figure 2 , Figure 2 This is a schematic diagram of the second embodiment of the lamp interlock circuit of this utility model. Based on the first embodiment of the lamp interlock circuit described above, a second embodiment of the lamp interlock circuit of this utility model is proposed.

[0031] In this embodiment, the switch interlocking unit 10 includes: a first AC contactor KM1 and a second AC contactor KM2; the second end of the lighting switch SW1 is connected to the first end of the lighting lamp L1 via the normally closed contact (C2) of the second AC contactor KM2 and the normally open contact (O1) of the first AC contactor KM1 in sequence; the second end of the ultraviolet switch SW2 is connected to the first end of the ultraviolet lamp L2 via the normally closed contact (C1) of the first AC contactor KM1 and the normally open contact (O2) of the second AC contactor KM2 in sequence; the power supply terminal of the first AC contactor KM1 is disposed between the normally closed contact of the second AC contactor KM2 and the normally open contact of the first AC contactor KM1; the power supply terminal of the second AC contactor KM2 is disposed between the normally closed contact of the first AC contactor KM1 and the normally open contact of the second AC contactor KM2.

[0032] It should be noted that an AC contactor is a device that can quickly disconnect the AC main circuit and frequently connect and disconnect the current control circuit. It is commonly used to control electric motors, but can also be used to control electrical loads such as factory equipment, electric heaters, machine tools, and various power units. Contactors not only connect and disconnect circuits but also provide undervoltage release protection. They have a large control capacity and are suitable for frequent operation and remote control. Connecting two AC contactors to a lighting circuit, with their normally closed and normally open contacts connected in series, and then placing them in the lighting circuit and the ultraviolet lamp circuit respectively, ensures that at any given time, only one circuit will be in a closed conducting state.

[0033] Reference Figure 3 , Figure 3 This is a schematic diagram of the lighting circuit conduction structure in the second embodiment of the lighting interlock circuit of this utility model. When the lighting switch SW1 is closed, the normally closed contact of the second AC contactor KM2 is closed, and the first AC contactor KM1 is energized. When the normally open contact of the first AC contactor KM1 is closed, the lighting lamp L1 is lit. When the normally closed contact of the first AC contactor KM1 is open, the normally open contact of the second AC contactor KM2 is open, and the ultraviolet lamp circuit is cut off. Therefore, even if the ultraviolet switch SW2 is closed, the ultraviolet lamp L2 cannot be lit.

[0034] Reference Figure 4 , Figure 4This is a schematic diagram illustrating the conduction of the ultraviolet lamp circuit in the second embodiment of the lamp interlock circuit of this utility model. When the ultraviolet switch SW2 is closed, the normally closed contact of the first AC contactor KM1 is closed, and the second AC contactor KM2 is energized. The normally open contact of the second AC contactor KM2 is closed, and the ultraviolet lamp L2 is lit. When the normally closed contact of the second AC contactor KM2 is open, the normally open contact of the first AC contactor KM1 is open, and the lighting circuit is cut off. Therefore, even if the lighting switch SW1 is closed, the lighting lamp L2 cannot be lit.

[0035] Reference Figure 5 , Figure 5 This is a schematic diagram of the lamp disconnection structure in the second embodiment of the lamp interlock circuit of this utility model. Both the lighting switch SW1 and the ultraviolet switch SW2 are in the open state. The normally closed contact of the first AC contactor KM1 is closed, and the normally open contact of the second AC contactor KM2 is open, putting the ultraviolet lamp circuit in a cut-off state. Alternatively, if the normally closed contact of the second AC contactor KM2 is closed and the normally open contact of the first AC contactor KM1 is open, the lighting circuit is also in a cut-off state. At this time, closing either switch individually will close and power the corresponding circuit, while disconnecting the other circuit, preventing accidental operation.

[0036] Understandably, both the first and second AC contactors have their normally closed contacts reset and close after power is lost at the power supply end, thus implementing a "close first, open later" operating logic. Only after one circuit is completely disconnected will the other circuit close and conduct, further enhancing operational safety.

[0037] Furthermore, both the lighting switch SW1 and the ultraviolet switch SW2 are mechanically interlocked switches; when the lighting switch SW1 is closed, the ultraviolet switch SW2 is locked; when the ultraviolet switch SW2 is closed, the lighting switch SW1 is locked. The physical structure ensures that when one switch is pushed up, the other switch is locked and cannot be pushed up (or automatically pops down).

[0038] In this embodiment, the switch interlocking unit employs a first AC contactor and a second AC contactor. The second terminal of the lighting switch is connected to the first terminal of the lighting lamp via the normally closed contact of the second AC contactor and the normally open contact of the first AC contactor. Similarly, the second terminal of the ultraviolet (UV) switch is connected to the first terminal of the UV lamp via the normally closed contact of the first AC contactor and the normally open contact of the second AC contactor. The power supply terminal of the first AC contactor is located between the normally closed contact of the second AC contactor and the normally open contact of the first AC contactor, and vice versa. The normally open contact of the first AC contactor controls the on / off state of the lighting lamp circuit, while its normally closed contact controls the on / off state of the UV lamp circuit. The normally open contact of the second AC contactor controls the on / off state of the UV lamp circuit, while its normally closed contact controls the on / off state of the lighting lamp circuit. Based on the forced physical interlocking mechanism of the contactor contact states, it is ensured that the ordinary lighting lamp and the UV lamp cannot be lit simultaneously under any operating sequence, and that when one lamp is lit, the circuit of the other lamp is physically disconnected. Physical circuit isolation is achieved through the mechanical linkage of contactors, which has significant advantages such as extremely high reliability, extremely low failure risk, fast response speed, and no dependence on software.

[0039] This utility model also discloses a lighting system, which includes the above-mentioned lamp interlock circuit.

[0040] It should be noted that the lighting system must include at least one general-purpose lamp. Multiple lamps can use the same interlocking logic as the lamps in the aforementioned lamp interlocking circuit, and each can be interlocked with the ultraviolet lamp circuit. Additional lamp circuits can be interlocked using a microcontroller or programmable logic controller (PLC) through programmed logic. Alternatively, contactors and interlocking relays can be used.

[0041] Since the lighting system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0042] This utility model also discloses a disinfection device, which includes the aforementioned lighting system.

[0043] It should be noted that the disinfection equipment may also be equipped with supporting facilities such as a platform, depending on the specific usage scenario. In hospital settings, the ultraviolet lamps of the aforementioned lighting system are used to sterilize the postoperative environment and prevent cross-infection. In production workshops, the ultraviolet lamps of the aforementioned lighting system are used to disinfect production materials and eliminate odors in public spaces.

[0044] Since the lighting system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the scope of protection of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A lamp interlock circuit, characterized in that, The lamp interlock circuit includes: a lighting circuit, an ultraviolet lamp circuit, and a switch interlock unit; The lighting circuit includes: a lighting switch and a lighting lamp; The ultraviolet lamp circuit includes: an ultraviolet switch and an ultraviolet lamp; The first terminals of both the lighting switch and the ultraviolet switch are connected to the live wire. The first input terminal of the switch interlock unit is connected to the second terminal of the lighting switch. The second input terminal of the switch interlock unit is connected to the second terminal of the ultraviolet switch. The first output terminal of the switch interlock unit is connected to the first terminal of the lighting lamp. The second output terminal of the switch interlock unit is connected to the first terminal of the ultraviolet lamp. The second terminals of both the lighting lamp and the ultraviolet lamp are connected to the neutral wire. The switch interlocking unit is used to close the connection path between the first input terminal and the first output terminal to conduct the lighting circuit when the lighting switch is closed, and to disconnect the connection path between the second input terminal and the second output terminal to cut off the ultraviolet lamp circuit.

2. The lamp interlock circuit as described in claim 1, characterized in that, The switch interlock unit is also used to close the connection path between the second input terminal and the second output terminal to conduct the ultraviolet lamp circuit when the ultraviolet switch is closed, and to disconnect the connection path between the first input terminal and the first output terminal to cut off the lighting lamp circuit.

3. The lamp interlock circuit as described in claim 1, characterized in that, The switch interlocking unit includes: a first AC contactor and a second AC contactor; The second end of the lighting switch is connected to the first end of the lighting lamp via the normally closed contact of the second AC contactor and the normally open contact of the first AC contactor in sequence. The second end of the ultraviolet switch is connected to the first end of the ultraviolet lamp via the normally closed contact of the first AC contactor and the normally open contact of the second AC contactor in sequence. The power supply terminal of the first AC contactor is located between the normally closed contact of the second AC contactor and the normally open contact of the first AC contactor. The power supply terminal of the second AC contactor is located between the normally closed contact of the first AC contactor and the normally open contact of the second AC contactor.

4. The lamp interlock circuit as described in claim 3, characterized in that, When the lighting switch is in the closed state, the normally closed contact of the second AC contactor is closed, the normally open contact of the first AC contactor is closed, the normally closed contact of the first AC contactor is open, and the normally open contact of the second AC contactor is open.

5. The lamp interlock circuit as described in claim 4, characterized in that, When the ultraviolet switch is in the closed state, the normally closed contact of the first AC contactor is closed, the normally open contact of the second AC contactor is closed, the normally closed contact of the second AC contactor is open, and the normally open contact of the first AC contactor is open.

6. The lamp interlock circuit as described in claim 5, characterized in that, Both the lighting switch and the ultraviolet switch are in the off state. The normally closed contact of the first AC contactor is closed, the normally open contact of the second AC contactor is open, the normally closed contact of the second AC contactor is closed, and the normally open contact of the first AC contactor is open.

7. The lamp interlock circuit as described in claim 6, characterized in that, Both the first AC contactor and the second AC contactor have their normally closed contacts reset and close after the power supply is lost.

8. The lamp interlock circuit as described in claim 1, characterized in that, Both the lighting switch and the ultraviolet switch are mechanically interlocked switches; When the lighting switch is in the closed state, the ultraviolet switch is in the locked state; When the ultraviolet switch is in the closed state, the lighting switch is in the locked state.

9. A lighting system, characterized in that, The lighting system includes a luminaire interlock circuit as described in any one of claims 1 to 8.

10. A disinfection device, characterized in that, The disinfection equipment includes the lighting system as described in claim 9.

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