CN102352974A - Light emitting diode (LED) ultraviolet germicidal lamp - Google Patents
Light emitting diode (LED) ultraviolet germicidal lamp Download PDFInfo
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- CN102352974A CN102352974A CN2011102629832A CN201110262983A CN102352974A CN 102352974 A CN102352974 A CN 102352974A CN 2011102629832 A CN2011102629832 A CN 2011102629832A CN 201110262983 A CN201110262983 A CN 201110262983A CN 102352974 A CN102352974 A CN 102352974A
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- germicidal lamp
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- ultraviolet germicidal
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Abstract
The invention discloses a light emitting diode (LED) ultraviolet germicidal lamp applied in the technical field of air disinfection and water purification. The germicidal lamp comprises a quartz outer tube, a strip metallic polygonal bracket and a luminous plate; and the luminous plate consists of an ultraviolet (with the wavelength of 250 to 270 nanometers) semiconductor InGaN/AlGaN, an MgZnO/ZnO heterojunction, a quantum well light emitting diode (LED) and a printed circuit board (PCB). The germicidal lamp has the main advantages that: 1, compared with a low-voltage mercury lamp, the LED has the advantages of high luminous efficiency, long service life, energy conservation, safety, reliability and the like; 2, the LED is encapsulated in vacuum, so that the emitting efficiency of the ultraviolet and the service life of the LED is prolonged; and 3, the germicidal lamp can be used for replacing the conventional low-voltage mercury lamp conveniently.
Description
Technical field
The present invention relates to a kind of ultraviolet germicidal lamp, particularly a kind of LED ultraviolet germicidal lamp, it is applicable to air sterillization and water treatment technology field.
Background technology
Ultraviolet sterilization is to utilize cell that the ultraviolet ray that wavelength is positioned at 250～270nm is had maximum absorption; Absorbed action of ultraviolet radiation in the cytogenetics material (DNA, DNA), it plays a kind of photochemical action; The energy of ultraviolet photon is absorbed by the base-pair among the DNA; Cause that inhereditary material morphs, make the dead at once or irreproducible offspring of bacterium, reach the purpose of sterilization.
Common ultraviolet germicidal lamp (UV lamp) is actually and belongs to a kind of low pressure mercury lamp, and is the same with common fluorescent lamp, utilizes low mercury vapor pressure (＜10
-2Pa) intensified and the emitted in ultraviolet line.What the fluorescent tube of different is fluorescent lamp adopted is simple glass, and the general adopting quartz glass of the fluorescent tube of bactericidal lamp is made, because quartz glass all has very high transmitance (reaching 80%-90%) to each wave band of ultraviolet ray, is the optimal material of making bactericidal lamp.The luminescence spectrum of ultraviolet germicidal lamp mainly contains two of 254nm and 185nm.The 254nm ultraviolet ray comes kill bacteria through the DNA of irradiation microorganism, and the 185nm ultraviolet ray can be with airborne O
2Become O
3(ozone), ozone have strong oxidation and kill bacteria effectively.What really have bactericidal action is (the ultraviolet ray of wavelength 100～275nm) of UVC wave band; This band ultraviolet is easy to absorbed by the DNA of organism; Especially best with the ultraviolet ray about 254nm, therefore in the ultraviolet germicidal lamp course of work, real acting is the ultraviolet ray of 254nm wavelength.
At present, mainly there is the problem of the following aspects in ultraviolet germicidal lamp:
1, the ultraviolet illumination strength retrogression is very fast, and the life-span is not long.Quartz burner after lighting 2000-3000 hour, 70%～80% when uitraviolet intensity can reduce to initial.At present, homemade uviol lamp useful life was generally 1000～3000 hours, and the effective run time of import low pressure fluorescent tube also has only 8000～12000 hours.
2, in sterilization process, real acting is the ultraviolet light of 254nm wavelength, so the available ultraviolet ray intensity of bactericidal lamp is lower, and promptly luminous efficiency is lower.
3, element mercury is the material extremely harmful to human body, causes environmental pollution easily, and it will be a very big problem that product reclaims, and will greatly threaten environment structure in case leak.
Summary of the invention
The purpose of this invention is to provide a kind of LED ultraviolet germicidal lamp, the ultraviolet illumination strength retrogression that exists in the solution prior art is very fast, and luminous efficiency is hanged down and element mercury is the technical problem harmful to toxic elements in human body.
Characteristic of the present invention is: 1) ultraviolet (wavelength is 250-270nm) the semiconductor InGaN/AlGaN of employing luminous efficiency height, long service life and MgZnO/ZnO hetero-junctions and quantum well radiation pipe (LED) are as light source.Because the angle of divergence of luminous tube is about 120 degree, we place luminous plaque three to six direction, and luminous plaque is placed many more, can guarantee that more the emissive porwer of four direction is even, reach the purpose with the low pressure mercury lamp equivalence.2) adopting the PCB circuit board is the substrate of led chip, uniformly-spaced places 3-40 led chip in the above, suitably chooses according to the length of bactericidal lamp.3) in order to overcome ultraviolet ray fast characteristics of decay in air, we have designed the scheme that in quartz ampoule, keeps vacuum, will improve greatly ultraviolet emission effciency and service life.4) substitute existing low pressure mercury lamp for ease, shell is selected the quartz glass tube encapsulation with low pressure mercury lamp same size (isometric, equal diameter) for use.Positive and negative electrode is drawn from the quartz ampoule two ends, is the required electric current of chip of luminescent tube introducing work.
Concrete technical scheme of the present invention is following:
As attach shown in Fig. 1 and 2, ultraviolet germicidal lamp comprises polygon metallic support 100, insulating sleeve 101, metal external electrode 102, luminous plaque 103, quartz outer tube 104, quartz inner pipe 105 and the metal lead wire 106 of long strip type.
Described polygon metallic support 100 is metal bars of a n-shaped, and wherein N is the quantity of luminous plaque, N=3-6, and there is the installing hole of insulation sleeve 101 at the two ends of metal bar;
Described luminous plaque 103 structures are shown in accompanying drawing 3; It is made up of luminous plaque PCB circuit board 106, led chip 107, contact conductor 108, positive electrode spun gold 109, negative electrode spun gold 110; Led chip 107 equidistant evenly being arranged on the PCB circuit board 106; Chip adheres to the PCB circuit board with silver slurry, and the method that adopts ultrasonic thermocompression is welded to the positive and negative spun gold lead-in wire of chip respectively on the circuit board on the corresponding gold electrode;
Described quartz outer tube 104 is identical with low pressure mercury lamp with quartz inner pipe 105.
The manufacturing process of ultraviolet germicidal lamp is following:
1. luminous plaque 103 usefulness epoxy glues are sticked on each side of polygon metallic support 100;
2. metal external electrode 102 usefulness oxyhydrogen flame sintering are at the bottom centre position of quartz inner pipe 105, and an end puts insulating sleeve 101, and use anti-ultraviolet epoxy resin to be fixed in the installing hole at polygon metal bar 100 two ends;
3. the both sides positive and negative electrode with luminous plaque links to each other with metal external electrode 102 with scolding tin respectively through metal lead wire 109, takes the mode of parallel connection to connect between the luminous plaque;
4. after the metallic support that will accomplish above-mentioned installation steps was put quartz outer tube 104 into, an end made quartz inner pipe 105 and 104 sealings of quartz outer tube with oxyhydrogen flame earlier, vacuumized the back other end equally with the oxyhydrogen flame sealing, promptly accomplished the making of LED ultraviolet germicidal lamp.
The invention has the advantages that: 1, relatively and low pressure mercury lamp, LED has luminous efficiency height, long service life, advantage such as energy-conservation and safe and reliable; 2, LED encapsulation improves ultraviolet emission effciency and LED service life in a vacuum; 3, the existing low pressure mercury lamp of convenient substituting.
Description of drawings
Fig. 1 is a LED ultraviolet germicidal lamp overall structure front schematic view.
Fig. 2 is a LED ultraviolet germicidal lamp schematic cross-section.
Fig. 3 is for installing led chip luminous plaque sketch map.
The specific embodiment
Provide an assembling instance of the present invention according to summary of the invention and description of drawings below, further specify ins and outs of the present invention, architectural feature and functional characteristics in conjunction with instance.But this instance does not limit the scope of the invention, and conforming with the instance of describing in summary of the invention and the description of drawings all should comprise within the scope of the present invention.This instance is to be the reference design according to existing 40W low pressure mercury lamp, and appearance and size is got 900*23mm.Ultra-violet light-emitting pipe (LED) is chosen the InGaN/AlGaN heterogeneous semiconductor junction device that emission wavelength is 260nn; Luminous plaque 103 is got the thick 1.5mmPCB plate of the long 800mm of wide 10mm; Uniformly-spaced place 10 LED in the above; Get 80mm at interval, it is that 10*10mm, length are that it is that 7mm, the degree of depth are the hole of 10mm that the square copper bar of 800mm, two ends centre bit are equipped with diameter that the polygon metallic support 100 of long strip type is chosen the cross section; It is that 5mm, length are the copper rod of 100mm that metal external electrode 102 is chosen diameter; It is that 5mm, external diameter are that 7mm, length are the Teflon hollow pipe of 10mm that insulating sleeve 101 is chosen internal diameter, and it is that 23mm, thickness are that 1.5mm, length are the quartz glass tube of 850mm that quartz outer tube 104 is chosen external diameter, and it is that 20mm, thickness are that 1.5mm, length are the quartz glass tube of 50mm that quartz inner pipe 105 is chosen external diameter.In this design, the mode that luminous plaque takes the four sides to place needs 40 led chips altogether.According to led chip running parameter (20mA6.5V), the electrical power of this ultraviolet germicidal lamp is 5.2W.
The specific embodiment can be divided into following four steps:
1, led chip is adhered to 107 positions of Fig. 3 with the silver slurry; The method of employing ultrasonic thermocompression is welded to the positive and negative spun gold lead-in wire of chip respectively on the gold electrode corresponding on the circuit board; Adopt identical method to place other nine led chips, take the mode of parallel connection to connect between the led chip.
2, metal external electrode 102 is fixed on the bottom centre position of quartz glass tube 105 earlier, and an end puts insulating sleeve 101, and uses anti-ultraviolet epoxy resin to be fixed on square metal rod 100 two ends, accomplishes the making of metallic support.
3, use anti-ultraviolet epoxy resin to glue the luminous plaque 103 that lastblock is equipped with led chip respectively in four sides of metallic support.Link to each other with metal external electrode 102 with scolding tin respectively through the positive and negative electrode of metal lead wire 106 with luminous plaque, four luminous plaques take the mode of parallel connection to connect.
4, the metallic support of above-mentioned completion is put in the quartz outer tube 104, an end vacuumizes the back other end and seals with oxyhydrogen flame more earlier with the oxyhydrogen flame sealing.Promptly accomplishing the LED ultraviolet germicidal lamp makes.
Claims (4)
1. LED ultraviolet germicidal lamp; It comprises polygon metallic support (100), insulating sleeve (101), metal external electrode (102), luminous plaque (103), quartz outer tube (104), quartz inner pipe (105) and metal lead wire (106); It is characterized in that: three to six luminous plaques stick on the polygon metallic support (100) of corresponding three to six positive limit shapes through epoxy glue; The both sides positive and negative electrode of luminous plaque uses scolding tin to link to each other with metal external electrode (102) respectively through metal lead wire (109), takes the mode of parallel connection to connect between the luminous plaque; Metal external electrode (102) is managed the bottom centre position of (105) with the oxyhydrogen flame sintering in quartz glass, an end puts insulating sleeve (101), and uses anti-ultraviolet epoxy resin to be fixed in the installing hole at polygon metal bar (100) two ends; After the metallic support of accomplishing above-mentioned installation put quartz glass outer tube (104), an end made sealing between pipe (105) and quartz glass outer tube (104) in the quartz glass with oxyhydrogen flame earlier, and vacuumizing afterwards, the other end seals with oxyhydrogen flame equally.
2. a kind of LED ultraviolet germicidal lamp according to claim 1; It is characterized in that: described polygon metallic support (100) is the metal bar of a n-shaped; Wherein N is the quantity and the N=3-6 of luminous plaque, and there is the installing hole of insulation sleeve (101) at the two ends of metal bar.
3. a kind of LED ultraviolet germicidal lamp according to claim 1; It is characterized in that: described luminous plaque (103) is made up of PCB circuit board (106), led chip (107), contact conductor (108), positive electrode gold (109) and negative electrode gold (110); Led chip (107) is equidistant evenly to be arranged on the PCB circuit board (106); Chip adheres to the PCB circuit board with silver slurry, and the method that adopts ultrasonic thermocompression is welded to the positive and negative spun gold lead-in wire of chip respectively on the circuit board on the corresponding gold electrode.
4. a kind of LED ultraviolet germicidal lamp according to claim 1 is characterized in that: described quartz outer tube (104), quartz inner pipe (105) are identical with the low pressure mercury lamp of same specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102629832A CN102352974B (en) | 2011-09-07 | 2011-09-07 | Light emitting diode (LED) ultraviolet germicidal lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102629832A CN102352974B (en) | 2011-09-07 | 2011-09-07 | Light emitting diode (LED) ultraviolet germicidal lamp |
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| Publication Number | Publication Date |
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| CN102352974A true CN102352974A (en) | 2012-02-15 |
| CN102352974B CN102352974B (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102629832A Expired - Fee Related CN102352974B (en) | 2011-09-07 | 2011-09-07 | Light emitting diode (LED) ultraviolet germicidal lamp |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102614540A (en) * | 2012-03-13 | 2012-08-01 | 湖南省食品安全生产工程技术研究中心 | LED (Light Emitting Diode) ultraviolet germicidal lamp |
| CN102671223A (en) * | 2012-06-01 | 2012-09-19 | 李政儒 | Handheld LED (light emitting diode) ultraviolet sterilization lamp |
| CN103787447A (en) * | 2014-02-19 | 2014-05-14 | 北京碧水源净水科技有限公司 | Ultraviolet LED (Light-Emitting Diode) sterilizer for sterilizing stationary liquid |
| CN106981561A (en) * | 2017-03-02 | 2017-07-25 | 佛山市香港科技大学Led-Fpd工程技术研究开发中心 | Ultraviolet LED light source and preparation method thereof |
| WO2017181751A1 (en) * | 2016-04-21 | 2017-10-26 | 圆融健康科技（深圳）有限公司 | Uv filament lamp |
| CN109602928A (en) * | 2019-01-03 | 2019-04-12 | 深圳市原野新技术有限公司 | A kind of portable deep UV LED disinfecting instrument |
| CN110740976A (en) * | 2017-04-14 | 2020-01-31 | 首尔伟傲世有限公司 | Sterilization module and water purifying device comprising same |
| CN111384218A (en) * | 2020-01-19 | 2020-07-07 | 南京航空航天大学 | ZnO/InGaN heterojunction light-emitting diode and preparation method thereof |
| CN112043972A (en) * | 2020-10-10 | 2020-12-08 | 罗璐 | Double-layered tubulose excimer lamp of wall and beauty instrument |
| JP2022056343A (en) * | 2020-09-29 | 2022-04-08 | ウシオ電機株式会社 | Inactivation device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102614540A (en) * | 2012-03-13 | 2012-08-01 | 湖南省食品安全生产工程技术研究中心 | LED (Light Emitting Diode) ultraviolet germicidal lamp |
| CN102671223A (en) * | 2012-06-01 | 2012-09-19 | 李政儒 | Handheld LED (light emitting diode) ultraviolet sterilization lamp |
| CN103787447A (en) * | 2014-02-19 | 2014-05-14 | 北京碧水源净水科技有限公司 | Ultraviolet LED (Light-Emitting Diode) sterilizer for sterilizing stationary liquid |
| WO2017181751A1 (en) * | 2016-04-21 | 2017-10-26 | 圆融健康科技（深圳）有限公司 | Uv filament lamp |
| CN106981561A (en) * | 2017-03-02 | 2017-07-25 | 佛山市香港科技大学Led-Fpd工程技术研究开发中心 | Ultraviolet LED light source and preparation method thereof |
| CN110740976A (en) * | 2017-04-14 | 2020-01-31 | 首尔伟傲世有限公司 | Sterilization module and water purifying device comprising same |
| CN109602928A (en) * | 2019-01-03 | 2019-04-12 | 深圳市原野新技术有限公司 | A kind of portable deep UV LED disinfecting instrument |
| CN111384218A (en) * | 2020-01-19 | 2020-07-07 | 南京航空航天大学 | ZnO/InGaN heterojunction light-emitting diode and preparation method thereof |
| CN111384218B (en) * | 2020-01-19 | 2022-01-18 | 南京航空航天大学 | ZnO/InGaN heterojunction light-emitting diode and preparation method thereof |
| JP2022056343A (en) * | 2020-09-29 | 2022-04-08 | ウシオ電機株式会社 | Inactivation device |
| JP7099595B2 (en) | 2020-09-29 | 2022-07-12 | ウシオ電機株式会社 | Inactivating device |
| CN112043972A (en) * | 2020-10-10 | 2020-12-08 | 罗璐 | Double-layered tubulose excimer lamp of wall and beauty instrument |
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| CN102352974B (en) | 2013-09-11 |
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