An LED light bar module for sterilization

Abstract

The utility model relates to ultraviolet lamp sterilization technical field especially, a kind of LED light bar module for sterilization;By setting up the double power supply loop of independent first wiring end, second wiring end, third wiring end and fourth wiring end, and in each loop series constant-current drive chip or current-limiting resistor, realize the current separation control of two ultraviolet LED lamp strings, it is favorable to solve the uneven problem of current distribution caused by LED parameter discreteness in traditional single-path drive, ensure that each deep ultraviolet LED element works at optimum current value, can make current fluctuation greatly reduce, ultraviolet light power output stability greatly improves, thereby significantly improve the inactivation efficiency to bacteria, virus, especially suitable for medical appliance disinfection and other strict scene to sterilization intensity requirement;Solved when using deep ultraviolet light emitting diode to disinfect, for the precise control of its power still shows insufficient to affect its disinfection effect and overall application efficiency technical problem.

Description

Technical Field

[0001] This utility model relates to the field of ultraviolet lamp sterilization technology, and in particular to an LED light strip module for sterilization. Background Technology

[0002] With the continuous acceleration of industrialization and the sustained growth of the global population, the effective protection of water resources and the scientific treatment of sewage have gradually evolved into a major global issue. Against this backdrop, in order to address the problem of mercury pollution, the international community, in accordance with the relevant provisions of the Minamata Convention, decided to completely ban the use of ultraviolet lamps containing mercury by 2020. The introduction of this ban has prompted people to urgently seek a new, environmentally friendly and efficient alternative to ultraviolet light sources.

[0003] Deep ultraviolet light-emitting diodes (DUV LEDs) based on wide-bandgap semiconductor materials, such as gallium nitride (GaN) and aluminum gallium nitride (AlGaN), have become an ideal alternative due to their superior performance. This all-solid-state light source system is not only small in size and extremely efficient, but also has a long lifespan, offering many significant advantages. Specifically, a chip the size of a thumbnail can emit more intense ultraviolet light than a traditional mercury lamp, demonstrating its powerful luminous capability. However, in practical applications, especially when using such chips for disinfection, a common problem exists: the precise control of its power is still insufficient, which to some extent affects its disinfection effect and overall application efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an LED light strip module for sterilization, which solves the technical problem that insufficient precise control of the power of deep ultraviolet light-emitting diodes during disinfection affects the disinfection effect and overall application efficiency.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an LED light strip module for sterilization, comprising a first terminal, a second terminal, a third terminal and a fourth terminal for current input and output, wherein a plurality of first electroluminescent elements for emitting ultraviolet light are connected in series between the first terminal and the second terminal, and a plurality of second electroluminescent elements for emitting ultraviolet light are connected in series between the third terminal and the fourth terminal.

[0006] Preferably, a first constant current driving chip is connected in series on the wire between the first terminal and the second terminal.

[0007] Preferably, a second constant current drive chip is connected in series on the wire between the third terminal and the fourth terminal.

[0008] Preferably, a third resistor is connected in series on the wire between the first terminal and the second terminal.

[0009] Preferably, a fourth resistor is connected in series on the wire between the third terminal and the fourth terminal.

[0010] Preferably, a first resistor is connected in series between the first terminal and the third terminal, and a second resistor is connected in series between the second terminal and the fourth terminal.

[0011] By employing the above technical solution, this utility model provides an LED light strip module for sterilization, which has at least the following beneficial effects:

[0012] 1. This utility model establishes a dual power supply circuit consisting of an independent first terminal, a second terminal, a third terminal, and a fourth terminal. A constant current driver chip or a current-limiting resistor is connected in series in each circuit to achieve separate current control of the two ultraviolet LED strings. This helps solve the problem of uneven current distribution caused by the discreteness of LED parameters in traditional single-channel driving, ensuring that each deep ultraviolet LED element operates at the optimal current value. Experimental verification shows that under DC36V input, the dual constant current driving scheme can significantly reduce current fluctuations and greatly improve the stability of ultraviolet light power output, thereby significantly improving the inactivation efficiency against bacteria and viruses. It is especially suitable for scenarios with stringent sterilization requirements, such as medical device disinfection.

[0013] 2. This utility model allows users to drive dual-channel light strips with only a single DC 36V power supply by bridging a first resistor between the first and third terminals and a second resistor between the second and fourth terminals. Compared with the traditional dual-power supply solution, the number of power modules is reduced and the wiring cost is lowered. At the same time, it supports quick switching between single and dual-channel working modes through customized wiring harnesses. In normal environments, the single-channel energy-saving mode can be used, and during periods of outbreaks, the dual-channel enhanced sterilization mode can be switched to enable dynamic adjustment of energy consumption as needed.

[0014] 3. Each embodiment of this utility model has a reserved standardized external expansion interface, such as the wire-to-board pin header GH1.25-4PWB, which supports the connection of fault diagnosis circuits. This design can monitor the current, voltage and temperature parameters of each LED in real time. Once a single LED failure is detected, the system will automatically isolate the faulty branch and maintain the other branch to work normally. At the same time, through the closed-loop feedback mechanism of the constant current drive chip, the output power deviation can still be kept within a small range when the power supply fluctuates greatly. Combined with the temperature compensation algorithm, it effectively prevents LED light decay. This allows the module to maintain high efficiency in disinfection even in harsh environments. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 This is a circuit diagram of Embodiment 1 of the present invention;

[0017] Figure 2 This is a circuit diagram of Embodiment 2 of the present invention;

[0018] Figure 3 This is a circuit diagram of Embodiment 3 of the present invention;

[0019] Figure 4 This is a circuit diagram of Embodiment 4 of this utility model.

[0020] In the diagram: 1. First terminal; 2. Second terminal; 3. Third terminal; 4. Fourth terminal; 5. First electroluminescent element; 6. Second electroluminescent element; 7. First constant current drive chip; 8. Second constant current drive chip; 9. Third resistor; 10. Fourth resistor; 11. First resistor; 12. Second resistor. 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.

[0022] Example 1

[0023] To address the technical problem that insufficient precise power control in current deep ultraviolet light-emitting diode (DUV) disinfection applications affects disinfection effectiveness and overall application efficiency, this application provides an LED strip module for sterilization, such as... Figure 1As shown, the device includes a first terminal 1, a second terminal 2, a third terminal 3, and a fourth terminal 4 for current input and output. Several first electroluminescent elements 5 for emitting ultraviolet light are connected in series between the first terminal 1 and the second terminal 2. Several second electroluminescent elements 6 for emitting ultraviolet light are connected in series between the third terminal 3 and the fourth terminal 4. The first and second electroluminescent elements 5 and 6 are deep ultraviolet light-emitting diodes, such as a high-power deep ultraviolet light-emitting diode of model DLP(SMD)-263M35C6 90°. In this embodiment, current flows in from the first terminal 1, sequentially through the first electroluminescent element 5, the second terminal 2, the third terminal 3, the second electroluminescent element 6, and the fourth terminal 4, and finally flows out from the fourth terminal 4. The first, second, second, third, and fourth terminals 4 can be connected to the four pins of a wire-to-plate pin header, such as the four pins of a wire-to-plate pin header of model WAFER-GH1.25-4PWB. To further ensure the current to the first and second electroluminescent elements 5 and 6... To ensure stability and accuracy, a first constant current driver chip 7 is connected in series on the wire between the first terminal 1 and the second terminal 2, and a second constant current driver chip 8 is connected in series on the wire between the third terminal 3 and the fourth terminal 4. Both the first and second constant current driver chips can be BP1638CJ models. Each constant current driver chip can precisely control several deep ultraviolet (DUV) LEDs, thus ensuring more stable operation of the DUV LEDs. It also supports flexible adjustment of the drive current by adjusting the current-limiting resistor value, thereby achieving precise control of the UVC LED output light power and ultimately adjusting the disinfection efficiency of the light strip according to actual needs. This design, while ensuring system stability, provides users with flexible output adjustment capabilities to meet the disinfection needs of different application scenarios.

[0024] Example 2

[0025] This implementation replaces the constant current drive chip with an alternative circuit structure to ensure precise control of several deep ultraviolet light-emitting diodes, such as... Figure 2 As shown, a plurality of first electroluminescent elements 5 for emitting ultraviolet light are connected in series between the first terminal 1 and the second terminal 2, and a plurality of second electroluminescent elements 6 for emitting ultraviolet light are connected in series between the third terminal 3 and the fourth terminal 4. A third resistor 9 is connected in series on the wire between the first terminal 1 and the second terminal 2, and a fourth resistor 10 is connected in series on the wire between the third terminal 3 and the fourth terminal 4. In this embodiment, the current flows in from the first terminal 1, flows through the first electroluminescent elements 5, the third resistor 9, the second electroluminescent elements 6 and the fourth resistor 10 in sequence, and then flows out from the fourth terminal 22.

[0026] Alternatively, by shorting the first terminal 1 and the third terminal 3, and the second terminal 2 and the fourth terminal 4 respectively using a wiring harness, an LED constant voltage drive circuit design with a single input power supply can be achieved. Employing constant voltage drive technology, this enables efficient management of several UVC LED chips connected in series with a single control. In terms of the light strip design, a deep ultraviolet LED light strip can be equipped with dual UVC LED chip groups, each controlled by an independent input power supply. This design provides users with great flexibility, allowing them to select either single-channel or dual-channel operating mode according to actual needs, thereby effectively controlling usage costs. More importantly, users only need to connect a DC36V power supply using a simple custom wiring harness to easily light the light strip and ensure its normal operation.

[0027] Furthermore, to meet diverse user needs, this example also includes external expansion interfaces. For instance, users can connect an external fault detection circuit to monitor the LED strip's operating status in real time, thereby further improving the system's stability and reliability. This design not only demonstrates our technical strength but also greatly enhances the product's versatility and practicality.

[0028] Example 3

[0029] like Figure 3 and Figure 4 As shown, this embodiment provides an LED constant voltage driving circuit design with a single input power supply. A first resistor 11 is connected in series between the first terminal 1 and the third terminal 3, a second resistor 12 is connected in series between the second terminal 2 and the fourth terminal 4, a plurality of first electroluminescent elements 5 for emitting ultraviolet light are connected in series between the first terminal 1 and the second terminal 2, and a plurality of second electroluminescent elements 6 for emitting ultraviolet light are connected in series between the third terminal 3 and the fourth terminal 4. In addition, one of the following schemes can be added: 1. A third resistor 9 is connected in series on the wire between the first terminal 1 and the second terminal 2, and a fourth resistor 10 is connected in series on the wire between the third terminal 3 and the fourth terminal 4; 2. A first constant current driving chip 7 is connected in series on the wire between the first terminal 1 and the second terminal 2, and a second constant current driving chip 8 is connected in series on the wire between the third terminal 3 and the fourth terminal 4; 3. Based on adding schemes 1 and 2, the third resistor 9 is further connected in parallel across the first constant current driving chip 7, and the fourth resistor 10 is connected in parallel across the second constant current driving chip 8.

[0030] In this embodiment, current flows in simultaneously from the first terminal 1 and the second terminal 2, passes through the aforementioned series-connected devices, and then flows out simultaneously from the third terminal 21 and the fourth terminal 22. This design realizes a technical architecture of single-channel power input driving dual-channel UVC LED chips in a deep ultraviolet LED light strip. The product can use a standard DC36V power input, and users only need to connect a single power interface to drive the entire light tube, greatly improving the ease of use and installation. This simplified power supply design allows the light strip to be easily integrated into various disinfection equipment. Equipment manufacturers only need to reserve a DC36V power interface to quickly deploy the disinfection solution. This design not only lowers the user's barrier to entry but also significantly expands the product's application scenarios, and can be widely used in disinfection needs in multiple fields such as medical, food processing, and water treatment.

[0031] In this invention, the LED constant current drive and LED constant voltage drive modes can be effectively switched via component surface mount technology. By controlling the current or voltage, more precise illumination control can be achieved, effectively ensuring the sterilization rate within the illumination distance and range. In constant voltage drive mode, the power supply mode of the LED beads can be changed by shorting the resistor or changing the wiring harness connection method, that is, two LEDs can share a single input power supply or each LED can have its own input power supply. The high-power deep ultraviolet LED chip used in this invention has a high photoelectric conversion efficiency, which can produce the same or higher ultraviolet output at a lower power, and its emitted ultraviolet wavelength is shorter, resulting in a stronger sterilization and disinfection effect.

[0032] Compared with traditional ultraviolet disinfection methods, the technical solution provided by this utility model has the following advantages:

[0033] 1. Energy saving and environmental protection: The UVC LED chip used has high photoelectric conversion efficiency, which can produce the same or higher ultraviolet output at low power, saving energy. In addition, the chip does not contain harmful substances and will not release harmful substances during operation, resulting in no secondary pollution and making it more environmentally friendly.

[0034] 2. Long lifespan: UVC LED chips have a long lifespan, reducing replacement and maintenance costs.

[0035] 3. Instant start-up: UVC LED chips do not require preheating and can be turned on and off immediately, making operation convenient.

[0036] 4. Compact size: The small size of the LED chip makes the design of devices equipped with UVC LEDs more compact and flexible, suitable for applications with limited space.

[0037] 5. High controllability: By adjusting the current or voltage, precise light control can be achieved to ensure the disinfection effect.

[0038] 6. Deep ultraviolet light: The short-wave ultraviolet light emitted by the UVC LED chip has a wavelength of 265nm, which has a stronger sterilization and disinfection effect and is suitable for high-requirement sterilization fields.

[0039] 7. Safe and reliable: The ultraviolet light emitted by UVC LED chips has a shorter wavelength, which is less harmful to the human body and other organisms. It is highly controllable and can effectively avoid the risk of misoperation or accidental irradiation.

[0040] In summary, the technical solution of this application has significant advantages in terms of efficiency, environmental protection, flexibility, controllability, and security.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An LED light bar module for sterilization, characterized by, It includes a first terminal (1), a second terminal (2), a third terminal (3) and a fourth terminal (4) for current input and output. A plurality of first electroluminescent elements (5) for emitting ultraviolet light are connected in series between the first terminal (1) and the second terminal (2). A plurality of second electroluminescent elements (6) for emitting ultraviolet light are connected in series between the third terminal (3) and the fourth terminal (4).

2. An LED light bar module for sterilization according to claim 1, wherein, A first constant current drive chip (7) is connected in series on the wire between the first terminal (1) and the second terminal (2).

3. An LED light bar module for sterilization according to claim 1, wherein, A second constant current drive chip (8) is connected in series on the wire between the third terminal (3) and the fourth terminal (4).

4. An LED light bar module for sterilization according to claim 1, wherein, A third resistor (9) is connected in series on the wire between the first terminal (1) and the second terminal (2).

5. An LED light bar module for sterilization according to claim 1, wherein, A fourth resistor (10) is connected in series on the wire between the third terminal (3) and the fourth terminal (4).

6. An LED light bar module for sterilization according to claim 1, wherein, A first resistor (11) is connected in series between the first terminal (1) and the third terminal (3), and a second resistor (12) is connected in series between the second terminal (2) and the fourth terminal (4).

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