CN102333393B - Field emission illumination light source - Google Patents
Field emission illumination light source Download PDFInfo
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- CN102333393B CN102333393B CN201010226072.XA CN201010226072A CN102333393B CN 102333393 B CN102333393 B CN 102333393B CN 201010226072 A CN201010226072 A CN 201010226072A CN 102333393 B CN102333393 B CN 102333393B
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- cathode
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- light source
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Abstract
The invention relates to a field emission illumination light source, which comprises a hollow tubular shell, a conductive anode, a conductive cathode, a transparent piece and a lamp cap, wherein one end of the shell is connected with the lamp cap, the other end of the shell is enclosed by the transparent piece, the conductive anode tightly clings to the transparent piece and is arranged opposite to the conductive cathode, the conductive cathode is accommodated in the shell and is fixed on the lamp cap, and the conductive cathode and the conductive anode are arranged in parallel. In the field emission illumination light source, the volume of an accommodating cavity formed by the shell, the conductive anode and the lamp cap is effectively enlarged through the conductive anode of the enclosed shell and the conductive cathode fixed in the shell and arranged in parallel to the conductive anode, so the large-volume accommodating cavity can not be affected when an air escape condition of the accommodating cavity appears, the lasting maintenance of high vacuum degree is realized, and the driving voltage of the light source is effectively reduced.
Description
[technical field]
The present invention relates to lighting source, particularly relate to a kind of field emission illuminating light source.
[background technology]
In normal lighting, usually widely use fluorescent lamp and LED illumination light source.Fluorescent lamp inside is mercurous mist, utilize the ultraviolet excitation light-emitting phosphor that gas discharge luminescence or gas discharge produce, but this light produced by gas discharge easily causes people's visual fatigue, and the existence of mercury also can cause the pollution of environment.LED illumination light source also to also exist in self scattering, high-temperature work environment the problems such as life time decay is very fast, divergence of beam difference, and in addition, because color rendering and colour temperature and LED illumination light source are the restrictions of point-source of light, LED illumination light source also easily causes visual fatigue.
The advantage that field emission illuminating light source has possessed energy-saving and environmental protection, can work in adverse circumstances, is widely used in each lighting field just gradually, to replace traditional fluorescent lamp and LED illumination light source.The profile of field emission illuminating light source mainly concentrates on the field emission light source of plane for plane, because the spacing of cavity and negative electrode and positive electrode is smaller, usually 1 centimetre is less than, therefore be difficult to reach high vacuum state, in addition, in little cavity, venting rate is also obvious on the impact of vacuum state.
[summary of the invention]
Based on this, be necessary to provide a kind of field emission illuminating light source maintaining condition of high vacuum degree.
A kind of field emission illuminating light source, comprise the housing of a hollow tube-shape, conductive anode, conduction cathode, Transparent Parts and lamp holder, one end of described housing is connected with described lamp holder, the other end of described housing close by described Transparent Parts, described conductive anode and described Transparent Parts are close to, and be oppositely arranged with described conductive cathode, described conductive cathode is contained in described housing and is fixed on described lamp holder, and described conductive cathode and described conductive anode be arranged in parallel.
Preferably, the face of the closed described housing of described Transparent Parts is arcwall face or plane.
Preferably, described conductive anode comprises the anode layer be close in described Transparent Parts and the luminescent layer be covered on described anode layer, and described anode layer is transparency electrode.
Preferably, described conductive anode also comprises reflector layer, and described reflector layer is covered on described luminescent layer.
Preferably, the material of described reflector layer is aluminium.
Preferably, described conductive cathode comprises cathode base and is covered in emitter on described cathode base and corresponding with described conductive anode, and the material of described cathode base is metal.
Preferably, described conductive cathode comprises cathode base, be covered on described cathode base and the cathodic coating corresponding with described conductive anode and the emitter that is covered on described cathodic coating, and the material of described cathode base is glass or pottery.
Preferably, described emitter is the surface that localization array type is distributed in cathodic coating.
Preferably, state and comprise support bar, described conductive cathode is fixed on described lamp holder by described support bar.
Preferably, cover one deck connecting electrode in described inner walls, described connecting electrode is electrically connected with described conductive anode.
Above-mentioned field emission illuminating light source is by the conductive anode of closure casing and to be fixed in housing and the conductive cathode be arranged in parallel with conductive anode, effectively increase the volume of the collecting cavity that housing, conductive anode and lamp holder are formed, make to accommodate when the situation of venting appears in cavity and can not have an impact to the collecting cavity of large volume, thus achieve the lasting maintenance of condition of high vacuum degree, significantly reduce the driving voltage of light source.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the field emission illuminating light source of an embodiment;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1;
Fig. 3 is the partial enlarged drawing at B place in Fig. 1.
[embodiment]
As shown in Figure 1, the field emission illuminating light source of an embodiment comprises housing 100, conductive anode 200, conduction cathode 300, Transparent Parts 400, lamp holder 500 and support bar 600.Housing 100 is hollow tube-shape, and two ends have opening, and one end is connected with lamp holder 500, the other end close by Transparent Parts 400, conductive anode 200 and Transparent Parts 400 are close to, and are oppositely arranged with conductive cathode 300.Conductive cathode 300 is arranged with the shape parallel of conductive anode 200, and conductive cathode 300 to be fixed on lamp holder 500 by support bar 600 and relative with conductive anode 200.
Housing 100 is roughly in funnel-form.Housing 100 two ends offer installing port 120 and light-emitting window 140 respectively.The sidewall of housing 100 is arcs.The width of housing 100 is along axially becoming gradually greatly, to make the width of installing port 120 much smaller than the width of light-emitting window 140 away from installing port 120.The material of housing 100 can be glass or pottery, coated inner wall one deck connecting electrode 130.Connecting electrode 130 contacts with conductive anode 200.This electrode can be chromium electrode, aluminium electrode, molybdenum electrode, conductive silver paste or transparent indium tin oxide (Indium Tin Oxides, ITO) electrode.
Please refer to Fig. 2, conductive anode 200 comprises anode layer 220, luminescent layer 230 and reflector layer 240.
Anode layer 220 is close in Transparent Parts 400, is transparency electrode.Anode layer 220 is formed by magnetron sputtering method or evaporation deposition.Luminescent layer 230 is covered on anode layer 220.Luminescent layer 230 is for sending the visible ray of white or colour when being bombarded by electronics, it can be fluorescent material, light-emitting film or fluorescent glass.In a preferred embodiment, luminescent layer 230 is the fluorescent material formed by cladding process.In other embodiments, luminescent layer 230 can also for the light-emitting film formed by magnetron sputtering method.The thickness of luminescent layer 230 is preferably 30 microns.Reflector layer 240 is covered on luminescent layer 230.In a preferred embodiment, the material of reflector layer 240 is aluminium, and its thickness is preferably 100 nanometers.
Please refer to Fig. 3, conductive cathode 300 comprises cathode base 310 and emitter 330.
Roughly curved of face corresponding with conductive anode 200 in cathode base 310 or plane, its material can be metal, glass or pottery.And the arcwall face of cathode base 310 is identical with the arcwall face radius of curvature of conductive anode 200.Its material of emitter 330 can be film-type or accurate one-dimension type, such as, it is the diamond film having of representative, carbon nano-tube or carbon nm wall that emitter 330 can be with carbon matrix, also can be the cupric oxide nano line of oxide-based nanomaterial, zinc oxide nanowire, nanometer rods, tetragonal nano zine oxide or oxidation Fe nanowire.Emitter 330 is formed by cladding process or direct growth method.Preferably, emitter 330 is in whole cathode base 310 surface distributed or the distribution of array localization.In preferred embodiment, emitter 330 is carbon nano-tube, and the diameter of carbon nano-tube is 10 ~ 20 nanometers, and length is 5 ~ 15 microns.If the material of cathode base 310 is glass or pottery, then after the cathodic coating 320 that cathode base 310 surface coverage one deck is corresponding with conductive anode 200, then emitter 330 need be covered on cathodic coating 320.Cathodic coating 320 is formed by cladding process, sputtering method, galvanoplastic, sedimentation or vapour deposition method.Cathodic coating 320 its can be metal electrode or non-metal electrode, such as chromium electrode, molybdenum electrode, aluminium electrode or containing the electrode of indium tin oxide (Indium Tin Oxides, ITO).
Light-emitting window 140 in Transparent Parts 400 closure casing 100, the face of its closure casing 100 is preferably arcwall face or plane, and its material is preferably the polymethyl methacrylate of glass or high transmission rate.
The shape of lamp holder 500 is identical with normal lamp holder, can be helicitic texture or blooking-hanging type structure, thus compatible with traditional incandescent lamp holder, with the incandescent lamp that convenient substituting is traditional.In the present embodiment, lamp holder 500 is fixedly linked with installing port 120 in housing 100, and it comprises the holder 540 be arranged in the installing port 120 of housing 100, has the cathode electrode 510 of external screw thread shape along the extension of holder 540 side, is positioned at the anode electrode 520 of holder bottom surface and connects the dielectric 530 of cathode electrode 510 and anode electrode 520.Lamp holder 500 also comprises getter (not shown), blast pipe 543, anode tap post 541 and cathode leg post 542.Getter is located on holder 540, and blast pipe 543 runs through to be located in holder 540, and the marginal position of holder 540 is located at respectively by anode tap post 541 and cathode leg post 542.The material of holder 540 is preferably glass or pottery.Getter its can be evaporable or non-evaporable, if getter is evaporable, then getter can be arranged on cathode base 310, if getter is non-evaporable, then getter can be arranged on the holder 540 in lamp holder 500.The two ends of anode tap post 541 and cathode leg post 542 are respectively arranged with wire 544.Anode tap post 541 is connected with anode electrode 520 with the connecting electrode 130 in housing 100 respectively by wire 544.Cathode leg post 542 is connected with conductive cathode 300 and cathode electrode 510 respectively by wire 544.Holder 540, housing 100 and conductive anode 200 form collecting cavity 140, in order to accommodate conductive cathode 300.Blast pipe 543 its for vacuumizing this collecting cavity 140 time communicate with the external world, with discharge collecting cavity 140 in gas.Lamp holder 500 is all sealed by slurry with the contact position of housing 100 and the contact position of blast pipe 543 and holder 540.Slurry is preferably cryogenic glass powder slurry.In a preferred embodiment, the vacuum degree of accommodating in cavity 140 is less than 10
-4handkerchief.Be appreciated that the shape of lamp holder 500 is not limited to this, also can adopt other suitable shape or structures.
Other structures that support bar 600 is direct rod shape or is made up of straight-bar.Support bar 600 one end is connected with conductive cathode, and the other end is by screw thread or be directly fixedly welded on holder 540 or housing 100.Under the effect of support bar 600, conductive cathode 300 is arranged in housing 100, and is oppositely arranged with conductive anode 200.Its material of support bar 600 can be glass or metal.
Above-mentioned field emission illuminating light source is by the conductive anode 200 of closure casing 100 and to be fixed in housing 100 and the conductive cathode 300 be arranged in parallel with conductive anode 200, effectively increase the volume of the collecting cavity 140 that housing 100, conductive anode 200 and lamp holder 500 are formed, make to accommodate when the situation of venting appears in cavity 140 and can not have an impact to the collecting cavity 140 of large volume, thus achieve the lasting maintenance of condition of high vacuum degree, significantly reduce the driving voltage of light source, improve electronics utilance.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (5)
1. a field emission illuminating light source, comprise the housing of a hollow tube-shape, conductive anode, conductive cathode, Transparent Parts and lamp holder, it is characterized in that, described housing is funnel-form, the two ends of described housing offer installing port and light-emitting window respectively, the width of described housing is along axially becoming gradually greatly away from described installing port, to make the width of described installing port much smaller than the width of described light-emitting window, the installing port of described housing is connected with described lamp holder, the light-emitting window of described housing close by described Transparent Parts, the face of the closed described housing of described Transparent Parts is arcwall face, and described arcwall face is the evagination arcwall face outstanding to described hull outside,
Described conductive anode and described Transparent Parts are close to, and be oppositely arranged with described conductive cathode, described conductive anode comprises the anode layer be close in described Transparent Parts and the luminescent layer be covered on described anode layer, described anode layer is transparency electrode, described conductive anode also comprises reflector layer, and described reflector layer is covered on described luminescent layer;
Described conductive cathode is contained in described housing and is fixed on described lamp holder, described conductive cathode and described conductive anode be arranged in parallel, described conductive cathode comprises cathode base and is covered in emitter on described cathode base and corresponding with described conductive anode, and the material of described cathode base is metal;
Or described conductive cathode comprises cathode base, be covered on described cathode base and the cathodic coating corresponding with described conductive anode and the emitter that is covered on described cathodic coating, the material of described cathode base is glass or pottery;
Wherein, the arcwall face of described cathode base is identical with the arcwall face radius of curvature of described conductive anode.
2. field emission illuminating light source according to claim 1, is characterized in that, the material of described reflector layer is aluminium.
3. field emission illuminating light source according to claim 1, is characterized in that, described emitter is the surface that localization array type is distributed in cathodic coating.
4. field emission illuminating light source according to claim 1, is characterized in that, also comprises support bar, and described conductive cathode is fixed on described lamp holder by described support bar.
5. field emission illuminating light source according to claim 1, is characterized in that, covers one deck connecting electrode in described inner walls, and described connecting electrode is electrically connected with described conductive anode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010226072.XA CN102333393B (en) | 2010-07-13 | 2010-07-13 | Field emission illumination light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010226072.XA CN102333393B (en) | 2010-07-13 | 2010-07-13 | Field emission illumination light source |
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| Publication Number | Publication Date |
|---|---|
| CN102333393A CN102333393A (en) | 2012-01-25 |
| CN102333393B true CN102333393B (en) | 2015-04-01 |
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| CN201010226072.XA Active CN102333393B (en) | 2010-07-13 | 2010-07-13 | Field emission illumination light source |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426716A (en) * | 2012-05-17 | 2013-12-04 | 海洋王照明科技股份有限公司 | Field emission light source device |
| CN103972026B (en) * | 2013-01-29 | 2016-08-03 | 海洋王照明科技股份有限公司 | Light source assembly and comprise the light fixture of this light source assembly |
| CN104078306A (en) * | 2013-03-29 | 2014-10-01 | 海洋王照明科技股份有限公司 | Field emission lamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4818914A (en) * | 1987-07-17 | 1989-04-04 | Sri International | High efficiency lamp |
| CN1378700A (en) * | 1999-10-12 | 2002-11-06 | 松下电器产业株式会社 | Electron-emitting device and electron source comprising the same, field-emission image display, fluorescent lamp, and methods for producing them |
| JP2006236721A (en) * | 2005-02-24 | 2006-09-07 | Harison Toshiba Lighting Corp | Field emission type light source |
| CN101615559A (en) * | 2008-06-24 | 2009-12-30 | 三星Sdi株式会社 | Light-emitting device and utilize the display unit of this light-emitting device as light source |
-
2010
- 2010-07-13 CN CN201010226072.XA patent/CN102333393B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4818914A (en) * | 1987-07-17 | 1989-04-04 | Sri International | High efficiency lamp |
| CN1378700A (en) * | 1999-10-12 | 2002-11-06 | 松下电器产业株式会社 | Electron-emitting device and electron source comprising the same, field-emission image display, fluorescent lamp, and methods for producing them |
| JP2006236721A (en) * | 2005-02-24 | 2006-09-07 | Harison Toshiba Lighting Corp | Field emission type light source |
| CN101615559A (en) * | 2008-06-24 | 2009-12-30 | 三星Sdi株式会社 | Light-emitting device and utilize the display unit of this light-emitting device as light source |
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| CN102333393A (en) | 2012-01-25 |
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