CN2731902Y - Field emitting luminous illumination light source - Google Patents
Field emitting luminous illumination light source Download PDFInfo
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- CN2731902Y CN2731902Y CN 200420083052 CN200420083052U CN2731902Y CN 2731902 Y CN2731902 Y CN 2731902Y CN 200420083052 CN200420083052 CN 200420083052 CN 200420083052 U CN200420083052 U CN 200420083052U CN 2731902 Y CN2731902 Y CN 2731902Y
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- field emission
- emission light
- lighting source
- emitting lighting
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Abstract
The utility model belongs to the technical field of daily light source provides a field emission luminous illuminating light source which comprises a transparent outer shell approximately presenting the spherical shape. The inner surface of the outer shell is provided with an anode layer and a fluorescent material. The interior of the outer shell in spherical shape is vacuum-tight, and is provided with a metallic ball as the conducting cathode. A plurality of micro electron emitters, for example carbon nano tubes, is formed around the circular arc surface of the metallic ball. The outer shell in the spherical shape comprises a neck part and a lamp cap arranged and fixed on the neck part. The lamp cap is provided with an anode electrode and a cathode electrode. The metallic ball is supported by a support column internally provided with a wire which is connected with the metallic ball and the cathode electrode of the lamp cap. The neck part is provided with an anode lead ring contacted with an anode layer, and connected with the anode electrode through the anode lead column. The utility model has the advantages of energy saving, no filling of any gas, cost saving, etc.
Description
[technical field]
The utility model relates to a kind of lighting source, relates in particular to a kind of environmentally friendly free of contamination cold-cathode field transmitting illuminant.
[background technology]
Up at present, the light source that normal lighting uses adopts incandescent lamp and fluorescent tube mostly.Incandescent lamp with a long history, manufacture craft is simple, and still, most of electric energy of incandescent lamp consumption is converted into thermal waste and falls, rather than is directly used in luminously, so that its disadvantage is a luminous efficiency is low, is replaced by the higher fluorescent lamp of efficient gradually.
Common fluorescent tube comprises a transparent glass tube, and its inwall is coated with white or color fluorescence material, also is filled with mercuryvapour in the glass tube.Its principle is to utilize the hot cathode electrons emitted to excite mercuryvapour to send ultraviolet light, and UV-irradiation is sent white light or colored light on fluorescent material.Fluorescent lamp is a kind of hot cathode light source, and luminous efficiency is than incandescent lamp height.But its shortcoming is to use virose mercury.After fluorescent tube was broken, mercuryvapour flows out the outside will be to environment and human body harmful.Consider that for environmental protection some countries and regions determined after the coming years, banned use of this mercurous fluorescent lamp.In this case, the no mercury light source that is used for replacing conventional fluorescent lamps or incandescent lamp is well received.
Therefore, environmental protection, harmless, high efficiency, energy-conservation fluorescent lamp demand and market are huge, have a extensive future.
Disclosed Chinese invention patent application on January 17 calendar year 2001 discloses a kind of white light source and manufacture method thereof of using carbon nano-tube No. 00107813.5.This white light source mainly comprises: the metallic film as negative electrode, be formed on the conducting polymer thin film pattern on the metallic film, and carbon nano-tube substantially vertically is cemented in the conducting polymer thin film pattern and an end exposes outside and the transparency electrode with fluorophor.Carbon nano-tube emitting electrons impact fluorescence body, thus visible light sent.
In addition, on June 11st, 2003, disclosed Chinese invention patent application also disclosed panel fluorescent source of a kind of similar use carbon nano-tube and preparation method thereof No. 01139810.8.
But above-mentioned two kinds of fluorescence light source complex structures are suitable for flat-panel screens, rather than general lighting.
As shown in Figure 4, on June 18th, 2003, the Chinese utility model patent of bulletin disclosed a kind of non-mercury florescent lamp No. 02234995.2, and it comprises: quartz glass lamp vessel 1, and its inner surface is coated with fluorescent material 3, and outer surface is formed with conductive membrane layer 2; Fluorescent tube 1 inside is filled with working gas xenon 4, and two ends are provided with a pair of external electrode 5.During work, apply high-frequency alternating voltage at external electrode 5, the working gas xenon 4 in the emitting electrons impact tube produces ultra-violet radiation, excites the fluorescent material 3 of pipe internal surface to send visible light again.
In addition, United States Patent (USP) the 5th, 866 has also disclosed the structure of similar no mercury ultraviolet discharge source No. 984.
But the fluorescent lamp that above-mentioned two patent documentations disclose all is to adopt the hot cathode emitting electrons, so its operating voltage is very high, power consumption is bigger; Though do not have mercury in the fluorescent tube, need to fill other inert gases to excite ultraviolet light, so bring following shortcoming: the one, increased cost, the 2nd, gas leaks easily, makes the luminous deepening of fluorescent lamp or can't be luminous.
Therefore, provide a kind of energy consumption low, the luminous efficiency height, environmental sound, and need not to fill the fluorescent illumination source of additional gas in fact for necessary.
[utility model content]
For the fluorescent lamp inefficiency, energy consumption height and the needs that solve prior art are filled technical problems such as inert gas, the purpose of the utility model is to provide a kind of field emission light-emitting lighting source, it is to environment and body harmless, the luminous efficiency height, energy consumption is relatively low, and need not to fill any gas, escapable cost.
For achieving the above object, the utility model provides a kind of field emission light-emitting lighting source, it comprises: a transparent shell roughly spherical in shape, its inner surface is coated with an anode layer and fluorescent material, described enclosure is vacuum-packed, and the inside of shell is provided with a conductive cathode with arc-shaped surface, is formed with many small electron emitters around described arc-shaped surface.
Specifically, described conductive cathode comprises a Metal Ball, and described electron emitter is formed at the outer surface of this Metal Ball.Described electron emitter comprises carbon nano-tube.
Again specifically, described shell comprises a neck, and described field emission light-emitting lighting source further comprises a lamp holder, and this lamp holder is arranged on this neck and fixing with it.And lamp holder is provided with anode electrode and cathode electrode.
More specifically, Metal Ball is embedded with support column wiry by an inside and supports, and wire connects the cathode electrode of Metal Ball and lamp holder.Described neck is provided with the anode tap ring that contacts with anode layer, and it connects anode electrode by conductor.
In addition, this neck also is provided with getter.
With respect to prior art, the utlity model has following advantage: at first, so not mercurous or other harmful substances of light source of the present utility model are to environment, body harmless; The second, the light source inner vacuum need not filled any gaseous matter, relative prior art, and the utility model has reduced the cost of blanketing gas; The 3rd, the utility model is a cold-cathode emitting electron, and with respect to the hot cathode emitting electrons of prior art, luminous efficiency of the present utility model is higher, just can cut down the consumption of energy.
[description of drawings]
Fig. 1 is the bulb schematic diagram of the preferred embodiment of the utility model field emission light-emitting lighting source;
Fig. 2 is the local enlarged diagram of Fig. 1;
Fig. 3 is the generalized section along the III-III hatching line of Fig. 1;
Fig. 4 is the schematic diagram of prior art non-mercury florescent lamp.
[embodiment]
Below in conjunction with Figure of description and specific embodiment execution mode of the present utility model is described in detail.
See also Fig. 1 and Fig. 2, the utility model preferred embodiment bulb profile is similar to the ordinary incandescent lamp bubble, comprise one roughly be spheroid, have the neck transparent glass shell 10 of (figure indicates), link to each other and fixing lamp holder (figure does not indicate) with this neck, and the electron emitting cathode (figure does not indicate) that extends to spheroid inside from lamp holder.
Wherein, these glass shell 10 inner vacuum, its coated inner wall has an anode layer 20 and fluorescence coating 30.Anode layer 20 is layer of transparent conductive films, generally adopts the ITO conductive film; Fluorescence coating 30 contains fluorescent material, comprises the white fluorescent material, or the color fluorescence material, can send white or color visible when the electron bombard fluorescent material.In addition, anode layer 20 covers spherical inner wall and extends to the neck of this glass shell 10, and can go between 22 around an anode tap ring 24 is set so that connect at the neck inner surface; Fluorescence coating 30 then only need cover spherical inner wall and get final product, and need not to extend to neck.In addition, described neck can seal by one sealing (figure indicates).
The shape of described lamp holder and ordinary incandescent lamp head are basic identical, and its neck with glass shell 10 links to each other, and and cervical fixation.In the present embodiment, lamp holder comprises the anode electrode with external screw thread shape 23 that is formed at peripheral side and bottom surface, and it is connected conducting by two lead-in wires, 22 and one anode tap post 21 with anode tap ring 24; And be positioned at the bottom of lamp holder and protrude in the outside cathode electrode 43.Lamp holder is just in order to draw anode electrode 23 and cathode electrode 43, so the utility model is not limited to the structure of anode electrode described above and cathode electrode.In other words, lamp holder also can adopt other suitable shape or structures, for example the buckle-type holder structure of similar incandescent lamp.
Insulate for making between two electrodes, a dielectric 15 can further be set between cathode electrode 43 and anode electrode 23, for example glass or ceramic block certainly, also can make between the two by alternate manner and insulate.In addition, also a getter 13 can be set further in bulb inside.In order not influence electronics emission and luminous, getter 13 is preferably disposed on neck.
Electron emitting cathode can be used to emitting electrons, and it comprises that a surface has the Metal Ball 40 of carbon nano-tube 42 (referring to Fig. 3), is attached thereto passive glass pillar 14 and cathode leg 45.Wherein glass pillar 14 is a hollow, and it can be fixed in the sealing part of neck; Cathode leg 45 passes hollow in the glass pillar 14, and an end contacts with Metal Ball 40, and the other end passes lamp holder and links to each other with cathode electrode 43.See also Fig. 3, in the present embodiment, the Metal Ball 40 of electron emitting cathode is positioned at the spherical center of bulb, and its diameter is much smaller than the diameter of the glass shell 10 of bulb.Many carbon nano-tube 42 are formed at the surface of Metal Ball 40; Preferably, every surface that carbon nano-tube 42 at least one ends expose Metal Ball 40 wherein; Preferred, every carbon nano-tube 42 stands on this surface, the one end be fixed in this surface certain a bit, the other end is substantially along this point vertically outwardly.
Manufacture method of the present utility model can be used for reference the manufacture craft of ordinary incandescent lamp, and metallic substrates forms the prior art of carbon nano-tube.Globular bulb with 4 centimetres of diameters is an example: the glass shell 10 that has neck can be with reference to the manufacture method of incandescent lamp bulb, but need further to form ito thin film as anode layer 20, and form fluorescent material as fluorescence coating 30 on anode layer 20 surfaces at glass shell 10 inner surfaces; The making of electron emitting cathode can be selected the carrier of diameter about 1 millimeter to several millimeters Metal Ball 40 as carbon nano-tube for use, utilize CVD method direct growth then or form one deck carbon nano-tube 42 on Metal Ball 40 surfaces by electrophoretic deposition method, and the radius of the length of glass pillar 14 and glass shell 10 is roughly the same or long slightly, cathode leg 45 in it adopts fine wire to get final product, wire 45 1 ends connect Metal Ball 40, and it is standby that the other end extends glass pillar 14 outsides; Lamp holder is made identical with the lamp holder of ordinary incandescent lamp basically: make anode tap ring 24 and anode tap post 21, and weld two lead-in wires 22 respectively, connect conducting anode electrode 23 and anode layer 20; The wire 45 that will extend glass pillar 14 outsides is connected to cathode electrode 43, can connect conducting cathode electrode 43 and Metal Ball 40; Then glass shell 10 inside are vacuumized, utilize the sealing of glass head seal technology to get final product.In addition, also can getter 13 be set before the sealing, may guarantee vacuum by remaining gas so that absorb near near glass shell 10 necks.
When field emission light-emitting lighting source of the present utility model uses, can apply negative direct current or pulse voltage at cathode electrode 43, and anode electrode 23 connecting to neutral current potentials, between Metal Ball 40 and anode layer 20, produce an electric field like this, force carbon nano-tube 42 emitting electrons on Metal Ball 40 surfaces, thereby electron bombard fluorescence coating 30 sends visible light.
More than be preferred embodiment of the present utility model, but content of the present utility model is not limited to above embodiment.Present technique field those of ordinary skill should be understood that, the utility model also can have other variations, for example glass shell 10 can be a spheroidal, shapes such as oval sphere, Metal Ball 40 size and dimensions can change as required, the manufacture method of carbon nano-tube 42 also can adopt distinct methods according to actual conditions, also can adopt to comprise that the various of other nanotubes, nano wire and metal tip can be at the electron emission structure of emitting electrons under the electric field action.The structure of lamp holder of the present utility model is not limited to embodiment and describes, and a need can draw anode electrode and cathode electrode gets final product.
The inside of light source the utlity model has following advantages: owing to need not to fill mercuryvapour or other gas Body, thus environmental sound not only, can be not harmful yet, and escapable cost; And this reality With novel use cold cathode, the direct impact fluorescence material of electronics and luminous is conducive to improve luminous efficiency, Thereby saving electric energy; In addition, the utility model can be with reference to manufacture craft and the structure of ordinary incandescent lamp, That is to say, need not other particular process sequence and equipment, can reduce production costs.
Claims (14)
1. field emission light-emitting lighting source, it comprises: a transparent hollow housing, its inner surface is coated with an anode layer and fluorescent material, it is characterized in that: described enclosure interior is vacuum-packed, and the inside of housing is provided with a conductive cathode with outer surface, is formed with many small electron emitters around described outer surface.
2. field emission light-emitting lighting source according to claim 1 is characterized in that: described housing is spheroidal substantially.
3. field emission light-emitting lighting source according to claim 1 is characterized in that: described anode layer comprises the ITO conductive film.
4. field emission light-emitting lighting source according to claim 1 is characterized in that: described conductive cathode comprises a Metal Ball, and it has a spherical outer surface, and described electron emitter is formed at the outer surface of this Metal Ball.
5. field emission light-emitting lighting source according to claim 4 is characterized in that: described electron emitter comprises carbon nano-tube.
6. field emission light-emitting lighting source according to claim 5 is characterized in that: at least one end of described carbon nano-tube exposes described Metal Ball outer surface.
7. field emission light-emitting lighting source according to claim 6 is characterized in that: described carbon nano-tube stand on described Metal Ball outer surface respectively certain a bit, the other end is along vertical this surface direction outwardly.
8. field emission light-emitting lighting source according to claim 5 is characterized in that: described housing further comprises a neck, and this neck has and seals.
9. field emission light-emitting lighting source according to claim 8 is characterized in that: described field emission light-emitting lighting source further comprises a lamp holder, and this lamp holder is arranged on this neck and fixing with it.
10. field emission light-emitting lighting source according to claim 9 is characterized in that: described lamp holder comprises the anode electrode and the cathode electrode of mutual insulating, and this anode electrode and cathode electrode are electrically connected with described anode layer and Metal Ball respectively.
11. field emission light-emitting lighting source according to claim 10 is characterized in that: the neck of described housing is provided with an anode tap ring, and this anode tap ring contacts with described anode layer, and is connected to described anode electrode by conductor.
12. field emission light-emitting lighting source according to claim 9 is characterized in that: described conductive cathode also comprises a strutting piece, this strutting piece is fixed in described neck and seals, and extends to enclosure interior and support described Metal Ball.
13. field emission light-emitting lighting source according to claim 12 is characterized in that: described strutting piece inside is provided with a wire and connects described Metal Ball and described cathode electrode.
14. each described field emission light-emitting lighting source according to Claim 8-13, it is characterized in that: described neck is provided with getter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420083052 CN2731902Y (en) | 2004-08-14 | 2004-08-14 | Field emitting luminous illumination light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420083052 CN2731902Y (en) | 2004-08-14 | 2004-08-14 | Field emitting luminous illumination light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2731902Y true CN2731902Y (en) | 2005-10-05 |
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ID=35052214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420083052 Expired - Lifetime CN2731902Y (en) | 2004-08-14 | 2004-08-14 | Field emitting luminous illumination light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2731902Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441969B (en) * | 2007-11-23 | 2010-07-28 | 清华大学 | Field emission pixel tube |
| CN1988108B (en) * | 2005-12-23 | 2010-09-01 | 清华大学 | Field emitting cathode and lighting device |
| US8159120B2 (en) | 2006-08-02 | 2012-04-17 | Tsinghua University | Pixel tube for field emission device |
-
2004
- 2004-08-14 CN CN 200420083052 patent/CN2731902Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1988108B (en) * | 2005-12-23 | 2010-09-01 | 清华大学 | Field emitting cathode and lighting device |
| US7812511B2 (en) | 2005-12-23 | 2010-10-12 | Tsinghua University | Field emission illumination device |
| US8159120B2 (en) | 2006-08-02 | 2012-04-17 | Tsinghua University | Pixel tube for field emission device |
| CN101441969B (en) * | 2007-11-23 | 2010-07-28 | 清华大学 | Field emission pixel tube |
| US7821193B2 (en) | 2007-11-23 | 2010-10-26 | Tsinghua University | Color pixel element for field emission display |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140814 Granted publication date: 20051005 |