Disinfection light source device suitable for cold chain and cold chain disinfection system

Abstract

The present application relates to the technical field of cold chain disinfection and killing, and provides a disinfection and killing light source device suitable for a cold chain and a cold chain disinfection and killing system thereof, which comprises a lamp tube assembly and a lamp tube mounting seat for mounting the lamp tube assembly; the lamp tube assembly comprises a core tube and a sleeve, the core tube is sleeved outside the sleeve, and the two ends of the core tube and the sleeve are respectively packaged with electrodes; the core tube and the sleeve are provided with a functional channel suitable for the flow of a liquid medium between the core tube and the sleeve, the core tube is filled with xenon gas; the lamp tube mounting seat comprises a base and a lampshade, the lampshade is provided with an inner reflecting surface, the inner reflecting surface enables the light emitted by the lamp tube assembly to irradiate onto an article to be disinfected and killed through the inner reflecting surface, and the inner reflecting surface adopts an aluminum light-reflecting film. Through the combination of ultraviolet and high-voltage inert gas power generation, a high-energy pulse lamp can be excited, the filling of xenon gas can enable the excitation time to be microsecond-level, the lamp has multiple effective disinfection and killing bands, has the effect of broad-spectrum sterilization, can be used immediately without preheating, and is favorable for application in occasions requiring rapid response.

Description

Technical Field

[0001] This invention relates to the technical field of cold chain disinfection, and in particular to a disinfection light source device and a cold chain disinfection system suitable for cold chains. Background Technology

[0002] Cold chain refers to the transportation of goods in a low-temperature environment, which provides a favorable survival temperature for viruses. This makes the outer packaging of food contaminated with viruses a carrier for the virus, and personnel can easily become infected during transportation. Therefore, how to disinfect the outer surface of goods during the cold chain process is one of the key factors to ensure the safety of cold chain transportation.

[0003] In related disinfection technologies, spraying disinfectants is commonly used to disinfect viruses. However, under the low temperatures of the cold chain, some disinfectants may condense, making them difficult to effectively disinfect viruses. Besides disinfectants, ultraviolet (UV) light is also used for disinfection, typically employing UV mercury lamps or UV LED lamps. These lamps, with their UV spectrum in the 200–275 nm band, can destroy the DNA or RNA of microorganisms, effectively killing pathogenic bacteria and viruses. However, low-pressure UV mercury lamps produce ozone below 200 nm; UV light is harmful to humans and must be kept away from them; UV disinfection is ineffective at removing spores, cysts, and viruses, lacks sustained disinfection capabilities, and may involve the photoreactivation of microorganisms. Summary of the Invention

[0004] This invention provides a disinfection light source device and its cold chain disinfection system suitable for cold chain applications, which solves the defects of poor disinfection effect, poor continuous disinfection effect, and low disinfection efficiency in the prior art.

[0005] The present invention provides a disinfection light source device suitable for cold chain, comprising: a lamp assembly and a lamp mounting base for mounting the lamp assembly;

[0006] The lamp assembly includes a core tube and a sleeve, the core tube being sleeved on the outside of the sleeve, and electrodes being encapsulated at both ends of the core tube and the sleeve, respectively.

[0007] The core tube and the sleeve have a functional channel suitable for the flow of liquid medium, and the core tube is filled with xenon gas;

[0008] The lamp mounting base includes a base and a lamp cover. The lamp cover is connected to the lamp mounting base and has an inner reflective surface. The inner reflective surface cooperates with the lamp assembly so that the light emitted by the lamp assembly shines on the item to be disinfected through the inner reflective surface.

[0009] The inner reflective surface uses an aluminum reflective film with a content greater than 99%.

[0010] The disinfection light source device for cold chain provided by the present invention further includes an adapter, the adapter being disposed on the base, the adapter having at least two input ends and one output end, the output end of the adapter being connected to the input end of the functional channel, and the adapter being used to control the connection between the input end and the output end.

[0011] The disinfection light source device for cold chain provided by the present invention further includes a tap, the tap being disposed on the base, the tap having an input end and at least two output ends, the input end of the tap being connected to the output end of the functional channel, and a nozzle being connected to at least one output end of the tap.

[0012] According to the disinfection light source device for cold chain provided by the present invention, the output end of the nozzle is facing the item to be disinfected, so as to spray the liquid in the functional channel in an atomized state through the nozzle.

[0013] According to the disinfection light source device for cold chain provided by the present invention, the adapter has two input ends, which can respectively input a disinfection catalyst and a cooling cleaning agent. The cooling cleaning agent is a mixture of deionized water and propylene glycol, wherein the mass mixing ratio of deionized water to propylene glycol is 200:1.

[0014] According to the disinfection light source device for cold chain provided by the present invention, the core tube and the sleeve are made of quartz material with a silicon dioxide content of 99.998%.

[0015] According to the disinfection light source device for cold chain provided by the present invention, the core tube and the sleeve are encapsulated at 1800 degrees Celsius.

[0016] The disinfection light source device for cold chain provided by the present invention uses a tantalum-tungsten alloy as the electrode material.

[0017] The present invention also provides a cold chain disinfection system having a disinfection light source device suitable for cold chain as described in any of the above embodiments, comprising a transmission mechanism and a refrigeration device, wherein the transmission mechanism is used to support the items to be disinfected and drive the items to be disinfected to move; the disinfection light source device is disposed on both sides of the transmission mechanism, and the refrigeration device is capable of providing cold energy for the disinfection light source device and the cold chain disinfection system.

[0018] According to the cold chain disinfection system provided by the invention, the transmission mechanism includes a transport support surface, and the disinfection light source device is disposed above the transport support surface so that disinfection is achieved during the movement of the disinfection items.

[0019] Through any of the above embodiments, the present invention has at least the following beneficial effects:

[0020] The disinfection light source device for cold chain applications provided by this invention combines ultraviolet light with high-pressure inert gas power generation to excite a high-energy pulsed light lamp. The xenon gas filling allows for excitation times in the microsecond range, with ultraviolet light intensity between 100MW and 100W. It possesses multiple effective disinfection wavelengths and exhibits broad-spectrum sterilization. On one hand, it is ready to use immediately without preheating, which is beneficial for applications requiring rapid response; on the other hand, it does not generate radiant heat during operation and does not alter the ambient temperature; precise control of ozone generation ensures that no ozone is produced during operation; and the use of a conveyor belt for flow-through disinfection enables comprehensive and thorough disinfection, reducing the probability of secondary infection. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this invention 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is one of the structural schematic diagrams of the disinfection light source device provided by the present invention;

[0023] Figure 2 This is a schematic diagram of the lamp tube assembly in the disinfection light source device provided by the present invention;

[0024] Figure 3 This is the second schematic diagram of the structure of the disinfection light source device provided by the present invention;

[0025] Figure 4 This invention provides Figure 3 A cross-sectional view of item AA in the middle section;

[0026] Figure 5 This is the third schematic diagram of the structure of the disinfection light source device provided by the present invention;

[0027] Figure 6 This is a schematic diagram of the cold chain disinfection system provided by the present invention.

[0028] Figure label:

[0029] 10. Disinfection light source device; 11. Lamp assembly; 111. Core tube; 112. Sleeve; 113. Functional channel; 12. Lamp mounting base; 121. Base; 122. Connecting plate; 123. Liquid injection channel; 13. Lamp cover; 14. Electrode; 15. Adapter; 16. Tape;

[0030] 20. Spray nozzle;

[0031] 30. Transmission mechanism;

[0032] 40. Disinfection room. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] The following is combined with Figures 1-2 This invention describes a disinfection light source device suitable for cold chain applications. The disinfection light source device 10 is configured for use in a flow-through cold chain system. The disinfection light source device 10 includes a lamp assembly 11 and a lamp mounting base 12 for mounting the lamp assembly 11. The lamp assembly 11 includes a core tube 111 and a sleeve 112, with the core tube 111 sleeved over the sleeve 112. Electrodes 14 are encapsulated at both ends of the core tube 111 and the sleeve 112. A functional channel 113 suitable for liquid medium flow is provided between the core tube 111 and the sleeve 112. The core tube 111 is filled with xenon gas. The lamp mounting base 12 includes a base 121 and a lampshade 13, which is connected to the lamp mounting base 12. The lampshade 13 has an inner reflective surface that cooperates with the lamp assembly 11 so that the light emitted by the lamp assembly 11 shines onto the item to be disinfected through the inner reflective surface. The inner reflective surface is made of aluminum reflective film with a reflectivity greater than 99%.

[0035] In the above embodiment, electrode 14 is connected to a high-voltage power supply. The high-voltage power supply excites the mixed gas in the tube under constant pressure through the material of electrode 14, causing it to generate strong ionizing radiation light. The lampshade 13 is constructed as an arc-shaped mechanism, which allows the excited light to be reflected and concentrated onto the item to be disinfected, effectively increasing the light intensity irradiated onto the item and further achieving effective disinfection of viruses. By employing a high-voltage electrode 14 to excite inert gas, a broad ultraviolet spectrum is achieved, with ultraviolet light intensity reaching 100mW-100W. This enables the disinfection of Staphylococcus aureus, Escherichia coli, and the novel coronavirus at a rate of seconds (5s-60s). The high-energy pulsed ultraviolet technology simultaneously radiates multiple effective ultraviolet bands (200-280nm), providing broad-spectrum sterilization. The pulsed ultraviolet xenon lamp has an excitation time of several hundred microseconds, compared to the tens of seconds of excitation time of ordinary continuous low-pressure mercury lamps. This allows for immediate use without preheating, which is beneficial for applications requiring rapid response. Furthermore, it does not generate radiant heat during operation and does not alter the ambient temperature. Precise control of ozone generation ensures that no ozone is produced during operation. The use of a conveyor belt for flow-through disinfection enables 360-degree comprehensive disinfection, ensuring rapid and thorough disinfection and reducing the probability of secondary infection.

[0036] Effective testing of the disinfection light source device 10 of this invention revealed that the high-pressure ultraviolet lamp with added xenon gas achieves a disinfection rate of ≥99.9% against Escherichia coli or Staphylococcus aureus, a service life of ≥150 hours, and an irradiation area of ​​≥0.06m² at a handle irradiation distance of 10cm. 2 The side length of the irradiated surface is ≥25cm, and the intensity of ultraviolet light (200-280nm) is ≥30mW / cm. 2 .

[0037] It is understandable that there is a gap between the core tube 111 and the sleeve 112, which serves as a functional channel 113 for the liquid medium. Typically, the UV lamp is a cold light source and does not generate excess heat. However, since the electrode 14 needs to be connected to a high-voltage power supply during excitation, heat is generated when the high-voltage power supply is turned on. This heat can be carried away by the liquid to maintain a relatively stable temperature for the lamp tube. It is understandable that, for lamps requiring continuous and stable operation, the functional channel 113 can be used as a cooling channel by introducing coolant. The specific cooling liquid medium can be a commercially available low-temperature coolant, such as antifreeze.

[0038] Specifically, electrode 14 has a rod-shaped structure, with one end extending into the core tube 111. In a more specific example, electrode 14 is made of tantalum-tungsten alloy, a material that is easier to obtain and has more stable structural strength.

[0039] Furthermore, the lamp mounting base 12 includes two opposing first mounting bases and second mounting bases, both with identical structures. Each lamp mounting base 12 includes a base 121 with a connecting plate 122 at one end. The connecting plate 122 connects to the electrode 14 module. The base 121 has mounting holes for mounting the core tube 111 and the sleeve. Above the mounting holes are fixing bolt holes for connecting the lamp cover 13, which is then connected via these bolt holes. A liquid injection channel 123 communicates with the mounting holes and is connected to the functional channel 113, through which liquid media are injected. For example, an adapter 15 is provided on the liquid injection channel to connect to an external pipeline, allowing liquid media to be injected through the external pipeline. In a more specific example, the base 121 is constructed as a T-shaped structure. The bottom of the base 121 has a fixing hole for supporting the entire disinfection light source device 10. In use, the base 121 is fixed to the support frame or support platform, and the disinfection items pass through from below the disinfection light source to achieve disinfection.

[0040] like Figures 3-4 As shown, in some embodiments, an adapter 15 is also included. The adapter 15 is disposed on the base 121. The adapter 15 has at least two input terminals and one output terminal. The output terminal of the adapter 15 is connected to the input terminal of the functional channel 113. The adapter 15 is used to control the connection between the input terminal and the output terminal.

[0041] The adapter 15 allows for the selection of the input medium for the functional channel 113, meaning that the functional channel 113 of this invention can achieve different functions by connecting different liquid media. For example, in the above embodiment, connecting a cooling liquid can help maintain a stable lamp tube temperature. Furthermore, a transparent disinfectant can be connected to the lamp tube. The disinfectant enters the functional channel 113 at the same temperature as the cooling liquid. The disinfectant absorbs the temperature of the electrodes 14 at both ends of the lamp tube, thus raising its temperature and removing excess heat from the lamp tube. In other words, the disinfectant acts as a cooling liquid on one hand, and on the other hand, the heating effect from the excess heat in the lamp tube ensures that the disinfectant can be effectively sprayed out even at cold temperatures, achieving a disinfection effect.

[0042] Furthermore, in the above embodiments, if the adapter 15 has a disinfectant input end, then its other end can be selected with a chemical cleaning agent capable of cleaning the pipe wall. Long-term spraying of disinfectant inevitably causes contamination of the inner wall of the pipe, reducing its light transmittance. Therefore, by connecting a chemical cleaning agent, the inner wall of the pipe can be cleaned. Of course, operation is stopped when the cleaning agent is connected. A preferred solution is to periodically connect the chemical cleaning agent during non-disinfection periods after a period of operation to ensure the efficiency of ultraviolet disinfection during normal disinfection periods.

[0043] Furthermore, such as Figure 5 As shown, it also includes a tap 16, which is disposed on the base 121. The tap 16 has an input end and at least two output ends. The input end of the tap 16 is connected to the output end of the functional channel 113, and a nozzle 20 is connected to at least one output end of the tap 16.

[0044] The spray nozzle 20 enables the spraying of disinfectant in the functional channel 113, thus combining photo-irradiation disinfection with disinfectant solution disinfection. It should be understood that photo-irradiation disinfection can effectively and promptly disinfect the surface of items, while disinfectant solution disinfection can maintain its effectiveness during transport. The combination of these two methods enhances both the effectiveness and duration of the disinfection effect, resulting in high-quality disinfection.

[0045] In a specific example, the output end of the nozzle 20 is facing the item to be disinfected, so that the liquid in the functional channel 113 is sprayed out in an atomized state through the nozzle 20.

[0046] The nozzle 20 is an atomizing nozzle 20, which enables the sprayed disinfectant liquid to form a disinfection film on the surface of the item, thereby achieving effective protection of the item surface.

[0047] In some examples, adapter 15 has two input terminals, which can respectively input a disinfection catalyst and a cooling cleaning agent. The cooling cleaning agent is a mixture of deionized water and propylene glycol, wherein the mass mixing ratio of deionized water to propylene glycol is 200:1.

[0048] In the above embodiments, a cooling cleaning agent and a disinfection catalyst are injected into the two input terminals respectively. The disinfection catalyst can undergo a photocatalytic reaction with ultraviolet light, thereby achieving the disinfection of the virus.

[0049] It should be noted that photocatalysis technology utilizes a general light source to drive photocatalyst materials to generate a continuous stream of highly active hydroxyl radicals (OH-) and superoxide ions (O2-) under mild conditions. This enables the deep oxidation and decomposition of small chemical molecules, macromolecules, or biological substances into inorganic small molecules (such as CO2, H2O, etc.), thereby degrading organic pollutants and killing bacteria, molds, and viruses. The entire process is characterized by no secondary pollution (green), broad spectrum, and long-lasting effect.

[0050] In this invention, the disinfection catalyst is first pre-catalyzed through the functional channel 113 of the lamp tube. During rapid flow, a portion of the disinfection catalyst briefly comes into contact with ultraviolet light, resulting in the initial generation of strong oxides and enhancing overall activity. Excess heat in the lamp tube further heats the catalyst, increasing its activity. The catalyst is then sprayed in a mist form through the nozzle 20, forming a catalytic film on the surface of the item. Ultraviolet light irradiating the catalyst at this point allows for a sufficient reaction, maintaining disinfection for an extended period and preventing virus transmission during cold chain transportation.

[0051] In the above embodiments, the disinfection catalyst is transparent. Configuring the catalyst to be transparent ensures the effectiveness of the lamp's illumination intensity. For example, the disinfection catalyst is configured as a nano-titanium dioxide aqueous solution ranging from 0.001% to 0.07%. In this case, the nano-titanium dioxide aqueous solution is approximately transparent, ensuring that it does not significantly affect the lamp's illumination intensity when passing through functional channel 113. In a further preferred example, the disinfection catalyst aqueous solution is configured at 0.01%, so that the catalyst has good light transmittance and a good titanium dioxide concentration, allowing for stronger light radiation transmission while achieving a better catalytic effect.

[0052] In the above embodiments, the cooling cleaning agent has good thermal conductivity, and the propylene glycol component helps remove dirt from the pipe wall, thus achieving a cleaning effect. In other words, when the present invention uses an aqueous solution of propylene glycol, it can be used as a coolant, removing heat while cleaning the pipe wall.

[0053] In specific applications, the core tube 111 and the sleeve 112 are made of quartz material with a silicon dioxide content of 99.998%.

[0054] In the above embodiments, the materials of the core tube 111 and the sleeve 112 are specified. This specification ensures that the core tube 111 and the sleeve 112 have good light transmittance, further enhancing the light intensity directly applied to the disinfection area. Furthermore, glass tubes made of 99.998% quartz are readily available, reducing the difficulty of preparing the finished product and lowering manufacturing costs.

[0055] In some examples, the core tube 111 and the sleeve 112 are encapsulated at 1800 degrees Celsius.

[0056] Specifically:

[0057] Electrode 14 is encapsulated at both ends of core tube 111 using an encapsulation process;

[0058] After evacuating the core tube 111, xenon gas is injected to complete the encapsulation of the core tube 111 and the electrode 14;

[0059] The encapsulated electrode 14 is assembled into the lamp mounting base 12 and the sleeve 112 is placed outside the core tube 111 to form the lamp assembly 11 described above.

[0060] like Figure 6 As shown, the present invention also provides a cold chain disinfection system, including a traveling disinfection light source device 10 and a refrigeration device. A transmission mechanism 30 is used to support the items to be disinfected and drive the items to be disinfected to move. The disinfection light source device 10 is disposed on both sides of the transmission mechanism 30, and the refrigeration device can provide cooling energy for the disinfection light source device 10 and the cold chain disinfection system. The disinfection light source device 10 is any of the disinfection light source devices suitable for cold chains provided in the above embodiments.

[0061] By arranging the disinfection light source device 10 provided in the above embodiment on both sides of the transmission mechanism 30, the disinfection light source device 10 on both sides can provide an effective disinfection effect for the flowing items.

[0062] Understandably, during disinfection operations, the disinfection light source device 10 is activated, and the items are transported through the conveyor mechanism 30, thus achieving virus disinfection and improving the disinfection effect. Furthermore, the disinfection light source of this invention uses high-pressure inert gas excitation, giving it high irradiance and further enhancing the disinfection effect.

[0063] In specific applications, the transmission mechanism 30 is a conveyor belt structure. A disinfection chamber 40 is set on one section of the conveyor belt structure, and the disinfection light source device 10 is arranged in the disinfection chamber 40 to complete the disinfection operation described above. Preferably, multiple sets of disinfection light source devices 10 are set in the disinfection chamber 40 to avoid production line malfunctions due to reasons such as failure, thereby improving its fault tolerance. Furthermore, multiple sets can further improve the disinfection effect. In addition, one set of disinfection light source devices 10 can be connected to two or more nozzles 20. The nozzles 20 are set in front of the movement path, that is, the items are sprayed before entering the ultraviolet light area. Multiple nozzles 20 can improve the spraying effect of the disinfection catalyst and can be effectively catalyzed by the subsequent light source.

[0064] Furthermore, the transmission mechanism 30 includes a support surface for transportation, and the disinfection light source device 10 is disposed above the support surface so that disinfection can be achieved during the movement of the disinfection items.

[0065] Specifically, the items are transported via a transport support surface. The disinfection light source device 10 is positioned above the support surface, at a distance of approximately 80cm from the items, to achieve effective disinfection of the items.

[0066] In practical applications, the disinfection light source device 10 is movably connected to the disinfection chamber 40 to achieve disinfection operations. When configuring the disinfection catalyst, its nozzle 20 is connected to the functional channel 113 in the disinfection light source device 10 via a conduit. The nozzle 20 is connected independently within the disinfection chamber 40 to facilitate adjustment of its angle, ensuring that the output of the nozzle 20 is directly facing the items on the conveyor line, thereby improving the quality of disinfection.

[0067] Through the above description of the embodiments, those skilled in the art can clearly understand that by replacing the original low-pressure mercury lamp with a high-pressure xenon lamp in each embodiment, the light intensity is stronger, which can effectively disinfect a variety of bacteria and has a broad-spectrum bactericidal effect. Furthermore, no irradiation heat is generated during the irradiation process, which can be well utilized in the cold chain and will not cause changes in ambient temperature. Further, by configuring and injecting a catalyst, on the one hand, the catalyst can improve the disinfection effect, and on the other hand, the catalyst can remove the residual heat generated in the lamp tube, and use this heat to heat the catalyst. Appropriate temperature and light enhance the activity of the catalyst itself, further improving the catalytic effect, thereby achieving high-quality and high-efficiency disinfection.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A disinfection light source device suitable for cold chain logistics, characterized in that, include: Lamp assembly (11) and lamp mounting bracket (12) for mounting lamp assembly (11); The lamp assembly (11) includes a core tube (111) and a sleeve (112). The core tube (111) is sleeved on the outside of the sleeve (112). Electrodes (14) are respectively encapsulated at both ends of the core tube (111) and the sleeve (112). There is a functional channel (113) between the core tube (111) and the sleeve (112) suitable for the flow of liquid medium, and the core tube (111) is filled with xenon gas; The lamp mounting base (12) includes a base (121) and a lamp cover (13). The lamp cover (13) is connected to the lamp mounting base (12). The lamp cover (13) has an inner reflective surface. The inner reflective surface cooperates with the lamp assembly (11) so that the light emitted by the lamp assembly (11) shines on the item to be disinfected through the inner reflective surface. The inner reflective surface is made of aluminum reflective film; It also includes an adapter (15) which is disposed on the base (121). The adapter (15) has at least two input terminals and one output terminal. The output terminal of the adapter (15) is connected to the input terminal of the functional channel (113). The adapter (15) is used to control the connection between the input terminal and the output terminal. It also includes a tap (16), which is disposed on the base (121). The tap (16) has an input end and at least two output ends. The input end of the tap (16) is connected to the output end of the functional channel (113). At least one output end of the tap (16) is connected to a nozzle (20). The output end of the nozzle (20) is facing the item to be disinfected, so that the liquid in the functional channel (113) is sprayed out in an atomized state through the nozzle (20).

2. The disinfection light source device suitable for cold chain according to claim 1, characterized in that, The adapter (15) has two input terminals, which can respectively input the disinfection catalyst and the cooling cleaning agent. The cooling cleaning agent is a mixture of deionized water and propylene glycol, wherein the mass mixing ratio of deionized water and propylene glycol is 200:

1.

3. The disinfection light source device suitable for cold chain according to claim 1, characterized in that, The core tube (111) and the sleeve (112) are made of quartz material with a silicon dioxide content of 99.998%.

4. The disinfection light source device suitable for cold chain according to claim 1, characterized in that, The core tube (111) and the sleeve (112) are encapsulated at 1800 degrees Celsius.

5. The disinfection light source device suitable for cold chain according to claim 1, characterized in that, The electrode (14) is made of tantalum-tungsten alloy.

6. A cold chain disinfection system having a disinfection light source device suitable for cold chain as described in any one of claims 1-5, characterized in that, It includes a transmission mechanism (30) and a refrigeration device. The transmission mechanism (30) is used to support the items to be disinfected and drive the items to be disinfected to move. The disinfection light source device (10) is arranged on both sides of the transmission mechanism (30). The refrigeration device can provide cold energy for the disinfection light source device (10) and the cold chain disinfection system.

7. The cold chain disinfection system according to claim 6, characterized in that, The transmission mechanism (30) includes a transport support surface, and the disinfection light source device (10) is located above the transport support surface so that disinfection can be achieved during the movement of the disinfection items.

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