Ultraviolet light intensity detection device for sterilizing lamp

Abstract

The utility model relates to an ultraviolet light intensity detection device for a sterilizing lamp, and belongs to the technical field of ultraviolet light intensity detection. Comprising a detector main body, the detector main body comprises a shell, and the shell is provided with at least one exposure window; the bearing structure is movably arranged in the shell; the detection card is provided with a photochromic layer, the color of the photochromic layer can be changed under the irradiation of ultraviolet light; and the indication layer is arranged above the photochromic layer and is provided with a preset indication mark of which the color is kept unchanged. By observing whether the indication mark is clearly displayed from the hidden state or not, a user can obtain an objective and definite yes or no judgment result, so that whether the light intensity of the ultraviolet disinfection lamp reaches the standard or not is determined. The process abandons the subjective process that a traditional indicator card depends on naked eye color gradation comparison, and the detection accuracy and reliability are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultraviolet light intensity detection, and particularly relates to an ultraviolet light intensity detection device for a disinfection lamp. Background Art

[0002] Ultraviolet disinfection, particularly UVC-band ultraviolet light, is an important disinfection method in the medical and public health fields. However, UV disinfection lamps gradually age with use, and their light intensity decreases, which directly leads to disinfection failure and poses a health risk. Therefore, regular testing of light intensity is crucial.

[0003] Currently, there are two main detection methods:

[0004] The first type is a professional electronic UV radiometer. Using a photoelectric sensor, it provides precise digital readings and is the gold standard for testing. However, its drawbacks are significant. First, its high cost, including equipment procurement, regular calibration, and maintenance, makes it difficult to widely deploy across numerous departments in hospitals and other institutions. Second, its operation is complex, requiring trained professionals and unsuitable for routine, rapid checks by frontline personnel.

[0005] The second type is a low-cost chemical indicator card. These utilize the principle that specialized chemicals change color under ultraviolet light. Users visually compare the color change with a standard color scale to estimate light intensity. While this method offers a low barrier to entry, the naked eye is prone to error in judging color gradients and is significantly affected by user and ambient light variations, making it difficult to provide objective and consistent test results. Utility Model Content

[0006] In order to solve the above-mentioned problems in the prior art, the utility model provides an ultraviolet light intensity detection device for a disinfection lamp.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] Provided is a device for detecting ultraviolet light intensity for a disinfection lamp, comprising:

[0009] A detector body, the detector body comprising:

[0010] a housing provided with at least one exposure window;

[0011] a bearing structure movably disposed inside the housing;

[0012] A replaceable test card, the test card carrying:

[0013] a photochromic layer, the color of which changes under ultraviolet light;

[0014] an indicator layer, which is disposed above the photochromic layer and has a preset indicator mark with a constant color;

[0015] The color of the preset indicator mark and the color of the photochromic layer in the initial state are configured to form a low visual contrast that makes the indicator mark difficult to identify;

[0016] Furthermore, the color of the preset indicator mark and the color of the photochromic layer that changes after being irradiated with a predetermined dose of ultraviolet light are configured to form a high visual contrast that makes the indicator mark clearly visible.

[0017] Preferably, the bearing structure includes:

[0018] a slide groove disposed inside the housing;

[0019] A slider is slidably connected to the slide groove.

[0020] Preferably, the slider has:

[0021] At least one card slot for inserting and guiding the detection card;

[0022] and / or, at least one elastic buckle for clamping the detection card.

[0023] Preferably, a set of mutually cooperating positioning structures is further provided between the slider and the slide groove;

[0024] The positioning structure is used to generate a perceptible positioning signal or positioning resistance when the detection area on the detection card is aligned with the exposure window during the movement of the slider.

[0025] Preferably, the positioning structure includes at least one elastic protrusion provided on the sliding block, and at least one positioning groove provided on the inner wall of the sliding groove and matched with the elastic protrusion.

[0026] Preferably, the housing is internally divided into an upper detection chamber and a lower operating chamber by a partition;

[0027] The exposure window is opened on the partition plate to connect the detection chamber and the operation chamber;

[0028] The detection chamber is used to accommodate an ultraviolet disinfection lamp to be tested, and is provided with an openable and closable chamber door for placing the disinfection lamp;

[0029] And the bearing structure is arranged in the operating chamber.

[0030] Preferably, a shading mechanism is further provided on the partition or at a position adjacent thereto, and the shading mechanism is configured to selectively cover or expose the exposure window to control the start and end of exposure.

[0031] Preferably, the shading mechanism is a shading plate;

[0032] The partition is provided with a guide groove that is slidably matched with the light shielding plate;

[0033] The light shielding plate is slidable in the guide groove to shield the exposure window in its inserted position and to expose the exposure window in its withdrawn position.

[0034] Preferably, the preset indication mark is at least one selected from words, letters, numbers or graphic symbols.

[0035] Preferably, the housing is made of a material that is opaque to ultraviolet light, and the exposure window is made of a material that is permeable to ultraviolet light.

[0036] The utility model provides a device for detecting ultraviolet light intensity for a disinfection lamp. The beneficial effects of the utility model are embodied in:

[0037] By observing whether the indicator clearly emerges from its hidden state, users can obtain an objective and clear "yes / no" judgment result to determine whether the light intensity of the UV disinfection lamp meets the standard. This process abandons the subjective process of traditional indicator cards that rely on visual comparison of color levels, greatly improving the accuracy and reliability of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a front view of the ultraviolet light intensity detection device for a disinfection lamp proposed in the present utility model;

[0039] Figure 2 This is a cross-sectional view of the ultraviolet light intensity detection device for a disinfection lamp proposed in the present utility model;

[0040] Figure 3 This is a structural diagram of the slider and the detection card in the ultraviolet light intensity detection device for a disinfection lamp proposed in the utility model;

[0041] Figure 4 This is a structural schematic diagram of the shading mechanism and partition in the ultraviolet light intensity detection device for a disinfection lamp proposed in the utility model.

[0042] Description of reference numerals:

[0043] 1. Detector body; 101. Housing; 102. Exposure window; 103. Partition; 104. Chamber door; 2. Carrying structure; 201. Slide groove; 202. Slider; 3. Detection card; 301. Photochromic layer; 302. Indication layer; 4. Positioning structure; 5. Shading mechanism. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] See also Figures 1-4 As shown, the specific embodiments provided by the present utility model are as follows:

[0046] like Figures 1 to 2 As shown, this embodiment provides a device for detecting ultraviolet light intensity of a disinfection lamp. The detection device of this embodiment includes a detector body 1 and a replaceable detection card 3.

[0047] The detector body 1 specifically includes a shell 101 and a supporting structure 2 disposed inside the shell 101 .

[0048] The housing 101 forms the overall framework of the device, providing support and protection for the internal components. The housing 101 can be made of durable materials such as engineering plastics or metal. An exposure window 102 is provided at an appropriate location within the housing 101. This exposure window 102 is constructed from a material that is transmissive to UV rays in the effective germicidal wavelength range (e.g., UVC), such as quartz glass or a specific UV-transmitting plastic. This ensures that external UV light can reach the internal test card 3 without attenuation.

[0049] The supporting structure 2 is movable within the housing 101. This movement allows the test card 3 mounted thereon to be moved from a standby position, not aligned with the exposure window 102, to a working position aligned with the exposure window 102. The supporting structure 2 is also detachably connected to the test card 3, making it easy for the user to replace the test card 3 after use.

[0050] The test card 3 is a consumable part of the device. It can be a thin card, and its base can be made of materials such as paper, plastic sheet, etc. The test card 3 carries a photochromic layer 301 and an indicator layer 302.

[0051] The photochromic layer 301 is the foundation of the detection function. This layer is coated or impregnated with a photochromic compound that is sensitive to ultraviolet light of a specific wavelength (e.g., 254nm UVC). In its initial state, unexposed to UV light, the photochromic layer 301 exhibits a specific initial color, such as lemon yellow. Upon exposure to a predetermined dose of UV light, the molecular structure of the compound in this layer changes, resulting in a shift in apparent color to a contrasting second color, such as dark blue or purple.

[0052] The indicator layer 302 is disposed above the photochromic layer 301. The indicator layer 302 itself is transparent and has one or more preset indicator marks printed thereon. The indicator marks are printed with an ink having stable color properties that does not change with ultraviolet light.

[0053] In its initial state—that is, when the test card 3 is not exposed to UV light—the color of the preset indicator on the indicator layer 302 is configured to be highly consistent with, or very similar to, the initial color of the underlying photochromic layer 301 (for example, both are lemon yellow). According to color theory, this extremely low color difference results in low visual contrast between the two. When a user observes the test card 3 with the naked eye, the preset indicator is hidden by the background color, making it difficult to discern.

[0054] When in use, the user installs a new test card 3 on the supporting structure 2 and places the detector body 1 in the working area of ​​the disinfection lamp to be tested. Then, the user moves the supporting structure 2 to align the test card 3 with the exposure window 102, and the ultraviolet light begins to irradiate.

[0055] When the cumulative dose of UV light reaches a preset effective disinfection threshold, the color of the photochromic layer 301 changes significantly (for example, from lemon yellow to dark blue). Since the color of the preset indicator mark on the indicator layer 302 (lemon yellow) remains unchanged, the yellow mark against the dark blue background creates a high visual contrast, making the previously difficult-to-identify indicator mark clearly visible.

[0056] In other words, by observing the final state of the indicator, the user can obtain an objective and clear judgment result to determine whether the light intensity of the ultraviolet disinfection lamp meets the standard. The specific judgment criteria are as follows:

[0057] If after the predetermined irradiation time, the background color of the photochromic layer 301 changes significantly, so that the originally hidden preset indicator becomes clearly visible and has a clear outline, it indicates that the cumulative dose of ultraviolet light has reached or exceeded the effective threshold, and the disinfection lamp is judged to be qualified.

[0058] If after the predetermined time of irradiation, the background color of the photochromic layer 301 does not change, or only changes slightly and insufficiently, so that the preset indicator mark is still difficult to identify, or the contrast with the background is limited and blurred, it indicates that the cumulative dose of ultraviolet light has not reached the effective threshold and the disinfection lamp is judged to be unqualified.

[0059] In short, by observing whether the indicator clearly emerges from its hidden state, users can obtain an objective and clear "yes / no" judgment result to determine whether the light intensity of the UV disinfection lamp meets the standard. This process abandons the subjective process of traditional indicator cards that rely on visual comparison of color levels, greatly improving the accuracy and reliability of detection.

[0060] In a preferred embodiment, the preset indication mark can be at least one selected from words, letters, numbers or graphic symbols, or any combination thereof.

[0061] When the indicator is in text form, words with clear affirmative or passing meanings can be used, such as "qualified" or "effective" in Chinese, or "PASS" or "OK" in English. When these words become clearly visible after being illegible, users can most directly understand that the current UV light intensity meets the disinfection requirements.

[0062] When the indicator is a letter or number, a character with representative or threshold meaning can be selected. For example, it can be a simple letter "P" (standing for Pass) or a number representing the minimum effective light intensity threshold, such as "100" (representing light intensity greater than or equal to 100μW / cm²).

[0063] When the indicator is a graphic symbol, a universal symbol with broad consensus and positive connotations may be selected, such as a check mark.

[0064] By adopting these clear and standardized indicators, the device eliminates the subjectivity and uncertainty brought about by the color comparison of traditional chemical indicator cards, making the interpretation of test results simple and greatly reducing the risk of misjudgment.

[0065] In a preferred embodiment, the supporting structure 2 specifically includes a sliding groove 201 and a sliding block 202 .

[0066] The slide groove 201 is one or more guide rails pre-set inside the housing 101. The slide groove 201 is used to guide the slider 202 to perform linear reciprocating motion therein.

[0067] The slider 202 is the main part of the supporting structure 2. Its shape matches the slide groove 201 and is slidably connected to the slide groove 201. The user can control its position in the slide groove 201 by pushing or pulling the end of the slider 202 exposed to the outside of the housing 101. Specifically, an opening is opened at a corresponding position of the housing 101, and a push rod is installed on the side wall of the slider 202, and a blocking block is provided on the push rod. By pulling the push rod, the slider 202 is exposed to the outside for installing or removing the detection card 3. By pushing the push rod, the slider 202 slides into the interior of the housing 101, and the blocking block blocks the opening.

[0068] Through this sliding operation, the replaceable detection card 3 mounted on the slider 202 can be conveniently switched between the preparation position and the working position aligned with the exposure window 102 .

[0069] like Figure 3 As shown, in a preferred embodiment, the slider 202 has at least one slot. The size of the slot matches the thickness and width of the test card 3, allowing the test card 3 to be smoothly inserted into the slot from one end of the slider 202. The sidewalls of the slot guide and limit the test card 3, ensuring its fixed position on the slider 202.

[0070] Alternatively, and preferably, the slider 202 is further provided with one or more elastic clips. The elastic clips may be elastic arms integrally formed with the slider 202, or independent elastic components. When the test card 3 is inserted into place, the elastic clips utilize their own elastic deformation to generate a clamping force acting on the surface of the test card 3, or snap into a pre-defined groove on the test card 3, thereby firmly clamping the test card 3 to the slider 202 and preventing it from accidentally loosening or falling off during the movement of the slider 202.

[0071] In a preferred embodiment, a set of mutually cooperating positioning structures 4 is further provided between the slider 202 and the slide groove 201 .

[0072] When the user pushes the slider 202, it provides clear physical feedback when it reaches a predetermined key position. Specifically, the positioning structure 4 is configured to generate a perceptible positioning signal or positioning resistance whenever the active detection area on the replaceable detection card 3 is perfectly aligned with the exposure window 102 during the movement of the slider 202.

[0073] This perceptible feedback can be a tactile "click" or a slight snapping sensation, or an audible crisp sound. This allows the user to accurately move the detection card 3 to the correct working position by feel alone, without visual observation. This greatly avoids detection errors caused by misalignment (i.e., the exposure window 102 is not fully aligned with the detection area), and improves the reliability and ease of use of the device.

[0074] More specifically, as a preferred solution for realizing the above functions, the positioning structure 4 may include at least one elastic protrusion arranged on the side or bottom surface of the slider 202, and at least one positioning groove arranged on the inner wall of the slide groove 201 corresponding to the position of the elastic protrusion.

[0075] As slider 202 moves, its elastic protrusion slides along the inner wall of slot 201. When slider 202 reaches its working position, the elastic protrusion aligns with the positioning groove and, under its own elastic force, falls into the groove. This process creates a perceptible "click" in the positioning. To continue moving slider 202, the user simply applies a slightly greater force to disengage the elastic protrusion from the groove, allowing it to continue moving to the next positioning point.

[0076] In a preferred embodiment, the housing 101 of the present invention is structurally a monolithic box with functional partitions. Specifically, the housing 101 is physically divided into an upper detection chamber and a lower operating chamber by a horizontal partition 103 .

[0077] The test chamber is an enclosed space specifically designed to accommodate the UV disinfection lamp to be tested. A retractable door 104 is located on one of the side or top walls of the chamber. The user can open this door 104 and safely place the UV disinfection lamp (e.g., a handheld disinfection wand or a standard lamp) into the chamber. Once properly placed, the door 104 is closed, creating a closed darkroom that completely isolates the lamp from ambient light.

[0078] The partition 103 is a key component connecting the upper and lower chambers, and is provided with the exposure window 102. The exposure window 102 is the only optical path connecting the detection chamber and the operation chamber, and is made of quartz glass or other materials with high transmittance to the target band of ultraviolet light.

[0079] The operating chamber, located at the bottom of the device, primarily houses the mechanical components required for user operation. The supporting structure 2, as described in the previous embodiment, is housed within this operating chamber. Because the supporting structure 2 is completely isolated from the upper UV light source by a partition 103, the user is completely protected from harmful UV radiation when operating the slider 202 or replacing the test card 3, significantly enhancing operational safety.

[0080] During operation in this embodiment, the user first opens the chamber door 104, inserts the lamp to be inspected, and closes it. Then, in the operating chamber below, they move the supporting structure 2 to prepare a new test card 3. When the upper UV disinfection lamp is turned on, its light is directed vertically downward, passing through the exposure window 102 on the partition 103 and irradiating the positioned test card 3 below, thus completing a precise inspection under standardized conditions (fixed distance, no interfering light).

[0081] like Figure 4 As shown, in a preferred embodiment, a light shielding mechanism 5 is further provided on or adjacent to the partition 103. The light shielding mechanism 5 is independent of the chamber door 104 of the upper detection chamber and is configured to be operable by a user from the outside to selectively and quickly shield or expose the exposure window 102 provided on the partition 103.

[0082] This separates the lamp preparation stage from the sample precise exposure stage. Specifically, the user places the lamp to be tested into the upper test chamber and closes the chamber door 104 , while preparing the test card 3 to be tested in the lower operating chamber.

[0083] Before the test begins, the shading mechanism 5 is in a closed state, completely blocking the exposure window 102 .

[0084] The user can first turn on the ultraviolet disinfection lamp above and allow it to warm up for a period of time (e.g., one minute) until its light intensity output reaches a stable state. During this period, since the shading mechanism 5 is closed, the detection card 3 below will not be exposed to any ultraviolet light.

[0085] When the lamp is stable, the user turns on the shading mechanism 5 to allow ultraviolet light of stable intensity to instantly pass through the exposure window 102 and irradiate the detection card 3, and starts the timing at the same time.

[0086] After the timing ends, the user closes the light shielding mechanism 5 and the exposure ends instantly.

[0087] By adding the shading mechanism 5, the device can ensure that the UV dose received by the detection card 3 is accumulated under ideal conditions of constant light intensity, thereby eliminating measurement errors caused by delayed lamp startup or unstable preheating.

[0088] In a preferred embodiment, the shading mechanism 5 is specifically a light-proof shading plate, which can be made of a metal sheet or opaque engineering plastic, has a flat shape, and is slightly larger than the exposure window 102 to be shielded.

[0089] To complement this light shield, guide grooves are machined or provided on the partition 103 along one or both sides of the exposure window 102. In actual operation, a portion of this light shield extends outside the housing 101, forming a handle or operating end that the user can push or pull. By operating this handle, the user can drive the light shield to slide linearly back and forth within the guide groove.

[0090] When the light shielding plate is pushed into its insertion position, the light-proof plate portion will completely cover the exposure window 102, thereby reliably blocking the light path between the upper and lower chambers.

[0091] When the light shielding plate is pulled out to its withdrawn position, its plate portion will completely leave the area of ​​the exposure window 102, so that the light path is completely unobstructed, allowing the ultraviolet light in the upper chamber to irradiate the detection card 3 below.

[0092] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A UV light intensity detection device for a disinfection lamp, characterized in that: include: A detector body, the detector body comprising: a housing provided with at least one exposure window; a bearing structure movably disposed inside the housing; A replaceable test card, the test card carrying: a photochromic layer, the color of which changes under ultraviolet light; an indicator layer, which is disposed above the photochromic layer and has a preset indicator mark with a constant color; The color of the preset indicator mark and the color of the photochromic layer in the initial state are configured to form a low visual contrast that makes the indicator mark difficult to identify; Furthermore, the color of the preset indicator mark and the color of the photochromic layer that changes after being irradiated with a predetermined dose of ultraviolet light are configured to form a high visual contrast that makes the indicator mark clearly visible.

2. The ultraviolet light intensity detection device for a disinfection lamp according to claim 1, characterized in that: The bearing structure comprises: a slide groove disposed inside the housing; A slider is slidably connected to the slide groove.

3. The ultraviolet light intensity detection device for a disinfection lamp according to claim 2, characterized in that: The slider has: At least one card slot for inserting and guiding the detection card; and / or, at least one elastic buckle for clamping the detection card.

4. The ultraviolet light intensity detection device for a disinfection lamp according to claim 2, characterized in that: A set of mutually cooperating positioning structures is also provided between the slider and the slide groove; The positioning structure is used to generate a perceptible positioning signal or positioning resistance when the detection area on the detection card is aligned with the exposure window during the movement of the slider.

5. The ultraviolet light intensity detection device for a disinfection lamp according to claim 4, characterized in that: The positioning structure includes at least one elastic protrusion arranged on the sliding block, and at least one positioning groove arranged on the inner wall of the sliding groove and matched with the elastic protrusion.

6. The ultraviolet light intensity detection device for a disinfection lamp according to claim 1, characterized in that: The housing is internally divided into an upper detection chamber and a lower operation chamber by a partition; The exposure window is opened on the partition plate to connect the detection chamber and the operation chamber; The detection chamber is used to accommodate an ultraviolet disinfection lamp to be tested, and is provided with an openable and closable chamber door for placing the disinfection lamp; And the bearing structure is arranged in the operating chamber.

7. The ultraviolet light intensity detection device for a disinfection lamp according to claim 6, characterized in that: A shading mechanism is also provided on the partition or at a position adjacent thereto. The shading mechanism is configured to selectively cover or expose the exposure window to control the start and end of exposure.

8. The ultraviolet light intensity detection device for a disinfection lamp according to claim 7, characterized in that: The shading mechanism is a shading plate; The partition is provided with a guide groove that is slidably matched with the light shielding plate; The light shielding plate is slidable in the guide groove to shield the exposure window in its inserted position and to expose the exposure window in its withdrawn position.

9. The ultraviolet light intensity detection device for a disinfection lamp according to claim 1, characterized in that: The preset indication mark is at least one selected from words, letters, numbers or graphic symbols.

10. The ultraviolet light intensity detection device for a disinfection lamp according to claim 1, characterized in that: The housing is made of a material that is opaque to ultraviolet light, and the exposure window is made of a material that is permeable to ultraviolet light.

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