Power-adjustable short-wave ultraviolet uniform light emitting device

Abstract

The invention relates to the technical field of short-wave ultraviolet treatment, and discloses a power-adjustable short-wave ultraviolet uniform light emitting device, which comprises a base, one side of the top end of the base is fixedly connected with a mobile station, and the middle part of the top end of the base is provided with a uniform light irradiation indication area; the irradiation assembly comprises an emitting part and a control part, the emitting part is connected to the moving table in a sliding mode through a limiting adjusting part and used for emitting 275 nm UVC light to the uniform light irradiation indication area, and the control part is arranged on the emitting part and used for adjusting the illumination distance and illumination intensity of light spots; the heat dissipation piece is arranged on the emitting piece and used for dissipating heat of the emitting piece; and the power supply assembly is electrically connected with the transmitting part and is used for supplying power to the transmitting part. According to the invention, 275nm UVC light with the uniformity exceeding 90% can be emitted in a certain irradiation area within the irradiation distance of 5-9cm, and the highest dodging intensity can reach 20mW / cm < 2 > when the irradiation distance is 5cm; when the irradiation distance is 9 cm, the highest dodging intensity can reach 10 mW / cm < 2 >, and the dodging intensity is steplessly adjustable from 0 to the highest.

Description

Technical Field

[0001] The present invention relates to the technical field of short-wave ultraviolet light treatment, and particularly to a short-wave ultraviolet uniform light emitting device with adjustable power. Background Art

[0002] Skin wounds are a common type of wound in clinical practice. The causes of their occurrence include trauma, burns, infections, surgical wounds, and intractable wounds caused by various chronic diseases, such as diabetic foot ulcers, pressure sores, varicose ulcer of the lower extremities, vascular ulcers, and skin ulcers caused by rheumatic immune diseases. Most skin wounds are accompanied by infection problems. The infection of the skin and soft tissues at the wound site will affect the healing of the wound, making it difficult or impossible to repair the wound. More seriously, for long-term unhealed infected wounds, the pathogenic microorganisms at the wound site may reach various parts of the body through the blood circulation system, further causing systemic infections, sepsis, amputation, and even death. Therefore, preventing and treating infections has always been an important part of the rehabilitation of such patients. Antibacterial treatment is particularly important.

[0003] Ultraviolet C (UVC) light with a wavelength in the range of 200 - 280 nm is a commonly used technology for inactivating pathogenic microorganisms. It has characteristics such as high energy and rapid sterilization, and can kill bacteria, fungi, and even viruses within a few seconds of irradiation. Moreover, due to its physical sterilization principle, pathogenic microorganisms will not develop drug resistance to UVC light. In addition, it has also been proven to have photobiological effects including promoting the regeneration of granulation tissue and vascular endothelial cells at the wound site, as well as promoting the expression of growth factors related to wound healing, thereby accelerating the healing of the wound. Clinically, short-wave ultraviolet treatment devices based on UVC light have obtained medical device licenses and have been used in the recovery treatment of conditions such as oral ulcers after chemotherapy, pressure sores, diabetic foot infections, herpangina, superficial wound infections, and postoperative wounds. However, whether it is a sterilization device or a short-wave treatment device, the existing devices all use a low-pressure mercury lamp light source with a wavelength of 254 nm. Since the 254-nm UVC light exactly matches the absorption peak of genetic material, long-term irradiation with 254-nm light is harmful to human health. It not only has the risk of inducing cancer, but also causes considerable damage to the cornea and conjunctiva of the eyes, resulting in necrosis and shedding of conjunctival and corneal epithelial cells. In addition, the ozone generated after the low-pressure mercury lamp is turned on also has certain toxicity. All these will cause some psychological fears for medical staff during the operation process.

[0004] More importantly, when using a short-wave treatment device clinically for wound treatment, medical staff need to hold the device for operation. Differences in medical staff's cognition may lead to inconsistent irradiation distances. The UVC light emitted by a low-pressure mercury lamp varies greatly in light intensity in the irradiation areas and at different irradiation angles at different distances from the light source. This can result in over-irradiation in some wound areas and under-irradiation in others when irradiating the patient's wound, thus affecting wound recovery. In addition, the light sources used in existing short-wave ultraviolet treatment devices have a fixed irradiation power. Although the irradiation time can be adjusted to meet different irradiation conditions, the adjustment window is very narrow and cannot meet the requirements of various complex wound application scenarios in clinical practice. Since tryptophan and tyrosine have strong characteristic absorption peaks at 270 - 280 nm, the wavelength of 270 - 280 nm is considered to inactivate microorganisms mainly by destroying the protein structure of microorganisms and interfering with the function of proteins. Therefore, the wavelength of 270 - 280 nm causes little damage to nucleic acids.

[0005] Therefore, there is an urgent need for a short-wave ultraviolet uniform light emission device with adjustable power to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a short-wave ultraviolet uniform light emission device with adjustable power to solve the problems existing in the above-mentioned prior art.

[0007] To achieve the above purpose, the present invention provides the following solution: The present invention provides a short-wave ultraviolet uniform light emission device with adjustable power, including:

[0008] A base, on one side of the top of the base, there is a fixed connection with a moving table, and in the middle of the top of the base, there is a uniform light irradiation indication area;

[0009] An irradiation component, including an emitting part and a control part. The emitting part is slidably connected to the moving table through a limit adjusting part and is used to emit 275 nm UVC light to the uniform light irradiation indication area. The control part is arranged on the emitting part and is used to adjust the light irradiation distance and light intensity of the light spot;

[0010] A heat dissipation part, arranged on the emitting part, and is used to dissipate heat from the emitting part;

[0011] A power supply component, electrically connected to the emitting part, and is used to provide power to the emitting part.

[0012] According to a short-wave ultraviolet uniform light emission device with adjustable power provided by the present invention, the emitting part includes a chassis. There is a groove at the bottom of the chassis, and a lamp group is installed in the groove. The lamp group includes a number of lamp beads, and the lamp beads are 275 nm UVC-LED lamp beads, and 275 nm UVC light is emitted through the number of lamp beads.

[0013] A power-adjustable short-wave ultraviolet uniform light-emitting device provided by the present invention, the number of lamp beads is 96.

[0014] A power-adjustable short-wave ultraviolet uniform light-emitting device provided by the present invention, the control member includes a reflector cup, and the reflector cup is installed in the groove and located below the lamp group.

[0015] A power-adjustable short-wave ultraviolet uniform light-emitting device provided by the present invention, the reflector cup is a frustum of a pyramid structure, wherein the perimeter of the top edge is 9 cm, the perimeter of the bottom edge is 12 cm, and the slope length is 2 cm.

[0016] A power-adjustable short-wave ultraviolet uniform light-emitting device provided by the present invention, the limit adjusting member includes a height adjusting knob, which is rotatably connected to the chassis. The bottom end of the moving table is fixedly connected to the base through a bottom plate. The moving table is a dovetail groove gear and rack moving table, and the height adjusting knob is adapted to the dovetail groove gear and rack moving table.

[0017] A power-adjustable short-wave ultraviolet uniform light-emitting device provided by the present invention, a locking knob is installed on the chassis, and the locking knob is in limit connection with the dovetail groove gear and rack moving table.

[0018] A power-adjustable short-wave ultraviolet uniform light-emitting device provided by the present invention, the heat dissipation member includes a heat dissipation fan installed in the chassis, and a plurality of heat dissipation holes are provided on the top end and the outer side wall of the chassis.

[0019] A power-adjustable short-wave ultraviolet uniform light-emitting device provided by the present invention, the power supply assembly includes a power supply chassis. A power supply interface, a second control line interface and a main power switch are provided on one side of the power supply chassis. A first control line interface is provided on the chassis. The second control line interface and the lamp group are respectively connected to the first control line interface through wires. A liquid crystal display screen is fixedly connected to the other side of the power supply chassis.

[0020] A power-adjustable short-wave ultraviolet uniform light-emitting device provided by the present invention, a handle is installed on the top end of the power supply chassis.

[0021] Compared with the prior art, the present invention has the following advantages and technical effects:

[0022] A power-adjustable short-wave ultraviolet uniform light emission device provided by the present invention. The emitting component is used to emit 275nm UVC light. The emitting component moves on the moving platform through the limit adjusting component to adjust the height of the emitting component, so as to adapt to different irradiation distances and ensure the stability during irradiation. The base is marked with a uniform light irradiation indication area to ensure that the irradiated object is in the area of uniform light irradiation during irradiation. The illumination distance and illumination area are adjusted through the provided control component, thereby realizing the condensing function. During use, the irradiated component is cooled by the provided heat dissipation component to prevent the influence of high temperature on the life and stability of the irradiated component. The provided power supply component provides stable power transmission during use and can adjust the irradiation time, etc. In this application, a safer 275nm UVC-LED light source is selected. Through optical path design, simulation and actual measurement experiments, a short-wave ultraviolet light uniform light emission device with steplessly adjustable irradiation power is built. This uniform light emission device can emit 275nm UVC light with a uniformity exceeding 90% within a certain irradiation area at an irradiation distance of 5-9 cm. When the irradiation distance is 5 cm, the highest uniform light intensity can reach 20 mW / cm2; when the irradiation distance is 9 cm, the highest uniform light intensity can reach 10 mW / cm2, and the uniform light intensity can be adjusted steplessly from 0 to the maximum. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the irradiation component of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the adjusting component of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the power supply component of the present invention;

[0028] Figure 5 It is a side view of the power supply chassis of the present invention;

[0029] Figure 6 It is a schematic diagram of the PCB circuit of the emitting component of the present invention;

[0030] Figure 7 It is a schematic diagram of the lamp bead distribution of the present invention;

[0031] Figure 8Forward simulation irradiance diagram of the 275nm UVC light emitted by the present invention;

[0032] Figure 9 When the irradiation distance is 9 cm, the power density of the 275nm UVC light emitted by the present invention at different positions in the light homogenization region is measured by an irradiance meter.

[0033] Wherein, 1. First control line interface; 2. Locking knob; 3. Moving stage; 4. Base plate; 5. Cooling fan; 6. Chassis; 7. Base; 8. Light homogenization irradiation indication area; 9. Height adjustment knob; 10. Lamp group; 11. Reflector cup; 12. Liquid crystal display screen; 13. Handle; 14. Power supply chassis; 15. Power supply interface; 16. Second control line interface; 17. Main power switch. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0036] Referring to Figures 1-9 , the present invention provides a power-adjustable short-wave ultraviolet uniform light emitting device, including:

[0037] A base 7, one side of the top end of the base 7 is fixedly connected with a moving stage 3, and a light homogenization irradiation indication area 8 is arranged in the middle of the top end of the base 7;

[0038] An irradiation component, including an emitting member and a control member, the emitting member is slidably connected to the moving stage 3 through a limit adjustment member, and is used to emit 275nm UVC light to the light homogenization irradiation indication area 8, and the control member is arranged on the emitting member and is used to adjust the irradiation distance and irradiation intensity;

[0039] A heat dissipation component, arranged on the emitting member, and is used to dissipate heat from the emitting member;

[0040] A power supply component, electrically connected to the emitting member, and is used to provide power to the emitting member.

[0041] In one embodiment of the present invention, the emitter is used to emit 275nm UVC light. The emitter moves on the mobile platform 3 through the limit adjustment member to adjust the height of the emitter, so as to adapt to different irradiation distances and ensure the stability during irradiation. The base 7 is marked with a uniform light irradiation indication area 8 to ensure that the irradiated object is in the area of uniform light irradiation during irradiation. The control member is provided to adjust the light irradiation distance and light intensity to realize the condensing function. During use, the heat dissipation member is provided to dissipate heat from the irradiation member to prevent the influence of high temperature on the life and stability of the irradiation member. The power supply component is provided to provide stable power transmission during use and can adjust the irradiation time, etc.

[0042] As an alternative embodiment, the emitter includes a chassis 6. A groove is formed at the bottom end of the chassis 6, and a lamp group 10 is installed in the groove. The lamp group 10 includes a number of lamp beads, and the lamp beads are 275nm UVC-LED lamp beads, and 275nm UVC light is emitted through the number of lamp beads.

[0043] In one embodiment of the present invention, a lamp group 10 is installed in the groove at the bottom end of the chassis 6, and 275nm UVC light is emitted through the provided lamp group 10.

[0044] As an alternative embodiment, the number of lamp beads is 96.

[0045] In one embodiment of the present invention, the number of lamp beads is preferably 96. Specifically, the method of software simulation plus actual measurement optimization is used. We use the optical system modeling software LightTools for optical simulation. First, according to the nearly circular requirement of the diameter of the uniform light irradiation area of 4 cm and the emission light characteristics of the lamp beads with a 30-degree half-light angle, with the center point as the reference, the first circle of lamp beads is set within a radius of 3.25 cm. Then, two circles of lamp beads are set along the central symmetry direction within the radii of 2.75 cm and 3.75 cm from the center point respectively. Finally, four groups of lamp beads are symmetrically set at the four corners. First, arrange the lamp beads with as many lamp bead modules as possible to meet the required intensity requirements, and measure the actual light intensity distribution to determine the light intensity distribution of the 275nm UVC light emitted under different numbers of lamp beads. Then, reduce the lamp beads with little effect and minimize the operating power of the device as much as possible. The power density of the 275nm UVC light emitted by the device is actually measured using an ultraviolet irradiometer of Linshang Technology. Then, according to the proximity of the positions, the lamp bead modules are divided into four areas, and different areas are controlled separately. Finally, power-on testing is carried out. If the light intensity of a certain part is weak, the current and voltage intensity of the lamp beads in that area are increased to achieve the effect of uniform light. Such as Figures 8-9The figure shows the use of the optical system modeling software LightTools to simulate and measure the 275nmUVC light emitted by the irradiation system of the power-adjustable short-wave ultraviolet uniform light emitting device of the present invention. The final lamp group 10 includes a total of 96 6868-packaged 275nmUVC-LED lamp bead modules, each of which adopts the industry's smallest 30-degree half-light angle solution, and the chip output power is greater than 100mW. Within an irradiation distance of 5-9cm, 275nmUVC light with a uniformity of more than 90% can be emitted in a certain irradiation area, and the uniform light intensity can reach up to 20mW / cm2 when the irradiation distance is 5cm; the uniform light intensity can reach up to 10mW / cm2 when the irradiation distance is 9cm, and the uniform light intensity can be infinitely adjustable from 0 to the highest by adjusting the voltage.

[0046] As an optional implementation, the control component includes a reflective cup 11 , which is installed in the groove and located below the lamp assembly 10 .

[0047] In one embodiment of the present invention, the reflective cup 11 is a four-sided fully covered structure, which is used to control the illumination distance and illumination area of ​​the main light spot, thereby achieving the functions of focusing and long-range projection.

[0048] As an optional implementation, the reflective cup 11 is a quadrangular pyramid structure, wherein the perimeter of the top side is 9 cm, the perimeter of the bottom side is 12 cm, and the slope length is 2 cm.

[0049] In one embodiment of the present invention, by setting the reflective cup, the UVC light emitted by the peripheral LED lamp beads can be refracted to the central area through the reflection effect of the reflective cup 11, increasing the central light intensity while reducing the peripheral light intensity, thereby playing a focusing role. At the same time, when the top and bottom perimeters of the reflective cup 11 are fixed, by adjusting the slope length of the reflective cup, the reflection effect of the reflective cup can focus the emitted UVC light to a certain area, adjust the direction of UVC light irradiation, and thus play a role in controlling the area of ​​the light spot. The size of the reflective cup was finally determined to be: the top perimeter is 9 cm, the bottom perimeter is 12 cm, and the slope length is 2 cm.

[0050] As an optional embodiment, the limit adjustment member includes a height adjustment knob 9, which is rotatably connected to the chassis 6. The bottom end of the movable platform 3 is fixedly connected to the base 7 through the bottom plate 4. The movable platform 3 is a dovetail gear rack movable platform, and the height adjustment knob 9 is adapted to the dovetail gear rack movable platform.

[0051] In one embodiment of the present invention, the moving platform is a dovetail groove gear rack moving platform, wherein the dovetail groove is used to ensure stable movement between the chassis 6 and the moving platform, a rotating gear is arranged inside to mesh with a rack provided on the side wall, and a height adjustment knob 9 is coaxially fixed to the gear. When the height adjustment knob 9 is rotated, the moving platform 3 is raised or lowered by the meshing rack and gear to achieve its height adjustment.

[0052] As an alternative embodiment, a locking knob 2 is installed on the chassis 6, and the locking knob 2 is connected to the dovetail groove gear rack moving table in a limiting manner.

[0053] In one embodiment of the present invention, by turning the provided locking knob 2 so that it is clamped on the rack on the dovetail groove gear rack moving table, the limiting of the chassis 6 is realized.

[0054] As an alternative embodiment, the heat dissipation member includes a heat dissipation fan 5 installed in the chassis 6, and a plurality of heat dissipation holes are formed on both the top end and the outer side wall of the chassis 6.

[0055] In one embodiment of the present invention, heat dissipation during the operation of the lamp group 10 is achieved through the heat dissipation holes of the provided heat dissipation fan 5, ensuring the stable operation of the device.

[0056] As an alternative embodiment, the power supply assembly includes a power supply chassis 14. A power supply interface 15, a second control line interface 16, and a main power switch 17 are provided on one side of the power supply chassis 14. A first control line interface 1 is provided on the chassis 6. The second control line interface 16 and the lamp group 10 are respectively connected to the first control line interface 1 through electric wires. A liquid crystal display screen 12 is fixedly connected to the other side of the power supply chassis 14.

[0057] In one embodiment of the present invention, a power supply interface 15, a second control line interface 16, and a main power switch 17 are provided on the back of the power supply chassis 14. The power supply interface 15 is used to connect to an external household power supply for power supply. The current is then converted into direct current by a switching power supply installed inside for power supply to the entire system. The maximum supply voltage is 24V and the current is 8.8A. Through the second control line interface 16, the control line can connect the irradiation system and the power control system. The output voltage ratio can be adjusted through the liquid crystal display screen 12 to adjust the power density of the irradiation of the lamp group 10. In addition, the irradiation time can also be set on the liquid crystal display screen 12, and the timing is carried out in a countdown manner. The main power switch 17 controls the power supply of the entire power control system and the irradiation system.

[0058] As an alternative embodiment, a handle 13 is installed on the top of the power supply chassis 14.

[0059] In one embodiment of the present invention, a handle 13 is added to the top of the power supply chassis 14 to facilitate the transfer of its position.

[0060] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0061] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A power adjustable short-wave ultraviolet uniform light emitting device, characterized in that: include: A base (7), wherein a moving platform (3) is fixedly connected to one side of the top of the base (7), and a uniform light irradiation indication area (8) is provided in the middle of the top of the base (7); An irradiation assembly comprises an emitting element and a control element, wherein the emitting element is slidably connected to the moving platform (3) via a limit adjustment element and is used to emit 275 nm UVC light to the uniform light irradiation indication area (8), and the control element is arranged on the emitting element and is used to adjust the illumination distance and illumination intensity of the light spot; A heat sink, disposed on the emitting element, for dissipating heat from the emitting element; A power supply component is electrically connected to the emitting element and is used to provide power to the emitting element.

2. The power adjustable short-wave ultraviolet uniform light emitting device according to claim 1, characterized in that: The emitting element comprises a chassis (6), a groove is provided at the bottom of the chassis (6), a lamp group (10) is installed in the groove, the lamp group (10) comprises a plurality of lamp beads, the lamp beads are 275nm UVC-LED lamp beads, and 275nm UVC light is emitted by the plurality of lamp beads.

3. The power adjustable short-wave ultraviolet uniform light emitting device according to claim 2, characterized in that: The number of the lamp beads is 96.

4. The power adjustable short-wave ultraviolet uniform light emitting device according to claim 2, characterized in that: The control component comprises a reflective cup (11), which is installed in the groove and is located below the lamp group (10).

5. The power adjustable short-wave ultraviolet uniform light emitting device according to claim 4, characterized in that: The reflective cup (11) is a quadrangular pyramid structure, wherein the perimeter of the top side is 9 cm, the perimeter of the bottom side is 12 cm, and the slope length is 2 cm.

6. The power adjustable short-wave ultraviolet uniform light emitting device according to claim 2, characterized in that: The limit adjustment member comprises a height adjustment knob (9) which is rotatably connected to the chassis (6); the bottom end of the movable platform (3) is fixedly connected to the base (7) via a bottom plate (4); the movable platform (3) is a dovetail gear rack movable platform; the height adjustment knob (9) is adapted to the dovetail gear rack movable platform.

7. The power adjustable short-wave ultraviolet uniform light emitting device according to claim 6, characterized in that: A locking knob (2) is installed on the chassis (6), and the locking knob (2) is limitedly connected to the dovetail gear rack moving platform.

8. The power adjustable short-wave ultraviolet uniform light emitting device according to claim 2, characterized in that: The heat dissipation element comprises a heat dissipation fan (5) installed in the chassis (6), and a plurality of heat dissipation holes are provided on the top and outer side wall of the chassis (6).

9. The power adjustable short-wave ultraviolet uniform light emitting device according to claim 2, characterized in that: The power supply assembly comprises a power supply chassis (14), one side of which is provided with a power supply interface (15), a second control line interface (16) and a main power switch (17), the chassis (6) is provided with a first control line interface (1), the second control line interface (16) and the light group (10) are respectively connected to the first control line interface (1) via electric wires, and the other side of the power supply chassis (14) is fixedly connected with a liquid crystal display screen (12).

10. The power adjustable short-wave ultraviolet uniform light emitting device according to claim 9, characterized in that: A handle (13) is installed on the top of the power supply case (14).

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