CN201219098Y - Cold cathode air discharge lamp - Google Patents
Cold cathode air discharge lamp Download PDFInfo
- Publication number
- CN201219098Y CN201219098Y CNU2008201124711U CN200820112471U CN201219098Y CN 201219098 Y CN201219098 Y CN 201219098Y CN U2008201124711 U CNU2008201124711 U CN U2008201124711U CN 200820112471 U CN200820112471 U CN 200820112471U CN 201219098 Y CN201219098 Y CN 201219098Y
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- lamp
- discharge lamp
- fluorescent tube
- external electrode
- conductive layer
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Abstract
A cold cathode gas discharge lamp comprises a slim quartz glass lamp tube, gas and mercury sealed in tube, external electrode disposed at outside of lamp tube end. The external electrode comprises conductive layer coated on outside surface of lamp tube end. The external type cold cathode gas discharge lamp of the utility adopts unimorph even quartz glass as lamp tube shell, and is not subject to penetration of current, can achieve above 20000 hours of work life span; the external electrode adopts long electrode, thereby increases work current, promotes output brightness of lamp tube. The cold cathode gas discharge lamp of the utility comprises fluorescence lamp for illumination and ultraviolet lamp for sterilization and disinfection.
Description
Technical field
The utility model relates to the cold-cathode gas discharge lamp, relates in particular to a kind of long-life cold-cathode gas discharge lamp that adopts external electrode.
Background technology
The cold-cathode gas discharge lamp as fluorescent lamp because of its luminous intensity height, luminous evenly, fluorescent tube can be done superfinely and can make different shape, so obtained extensive application at present in fields such as LCD, scanner, automobile instrument panel, miniature advertisement lamp box and picture frame making.Under normal conditions, it is a kind of miniature intense light source of novelty as the background light source of the said goods.And along with the application of cold-cathode fluorescence lamp is more and more wider, people require to provide working life longer, and power output is bigger, that is the higher cold-cathode fluorescence lamp of luminosity.
The cold-cathode gas discharge lamp is as ultra-violet lamp, and people require also to provide that working life is longer, power output is bigger and make and be easy to lamp.
Existing external electrode formula cold-cathode gas discharge lamp adopts glass lamp, because glass contains different materials such as boron oxide, aluminium oxide and has different dielectric coefficients, its surface capacitance skewness is after the fluorescent tube energising, electric current forms in weak link easily and punctures, and causes the damage of fluorescent tube.The general fluorescent tube of being made by soft glass has only about 2000 hours useful life.With the fluorescent tube that Bohemian glass is made, its life-span also only has 6000 to 8000 hours.In addition, puncture because glass shell is easier to form electric current, so the external electrode of this fluorescent tube is unfit to do longlyer, operating current is restricted, and the power output of lamp is less.
Summary of the invention
Technical task to be solved in the utility model is to overcome the defective that above-mentioned prior art exists, and provides a kind of power output the big and longer external electrode formula cold-cathode gas discharge lamp of working life.
According to the utility model, a kind of cold-cathode gas discharge lamp is provided, comprises the elongated shape quartz glass lamp vessel, enclose gas and mercury in the pipe, and the external electrode that is arranged on the lamp tube end outside, described external electrode comprises the conductive layer that is coated on the described lamp tube end outer surface.
Above-mentioned cold-cathode gas discharge lamp, described fluorescent tube applies fluorescent material on the inwall of the other parts except that outer surface coated with conductive layer.
Above-mentioned cold-cathode gas discharge lamp, described fluorescent tube applies fluorescent material on the inwall of the other parts except that fluorescent tube top and outer surface coated with conductive layer.Above-mentioned cold-cathode gas discharge lamp, the conductive layer of described external electrode account for the 10%-15% of whole fluorescent tube length along the length of fluorescent tube length direction.
Above-mentioned cold-cathode gas discharge lamp, the conductive layer of described external electrode are coated in described lamp tube end near on the outer surface at fluorescent tube top.
Above-mentioned cold-cathode gas discharge lamp, the conductive layer of described external electrode are coated in described lamp tube end and comprise on the outer surface at fluorescent tube top.
Above-mentioned cold-cathode gas discharge lamp, described gas are inert gas.
Above-mentioned cold-cathode gas discharge lamp also comprises the conductive contact that is arranged on the described conductive layer.
Above-mentioned cold-cathode gas discharge lamp, described gas comprises argon and neon.
Above-mentioned cold-cathode gas discharge lamp, described gas also comprises xenon.
Above-mentioned cold-cathode gas discharge lamp, described conductive layer comprise SnO layer that is coated on the described lamp tube end outer surface and the conducting metal slurry that is coated on this SnO layer.
According to external cold-cathode gas discharge lamp of the present utility model, owing to adopted simple substance, uniform quartz glass as the fluorescent tube shell, it is difficult for being punctured by electric current, and working life can reach more than 20000 hours.And external electrode adopts long electrode, thereby has increased operating current.
Description of drawings
Hereinafter with reference to drawings and Examples external electrode formula cold-cathode gas discharge lamp of the present utility model is described in further detail.Identical or corresponding parts are represented with identical reference number in the accompanying drawing, and above-mentioned purpose, feature and advantage with other of the present utility model will embody more clearly in the following description.
Fig. 1 is the structural representation of expression according to the external electrode formula cold-cathode gas discharge lamp of first embodiment of the present utility model.
Fig. 2 is the structural representation of expression according to the external electrode formula cold-cathode gas discharge lamp of second embodiment of the present utility model.
Fig. 3 is the structural representation of expression according to the external electrode formula cold-cathode gas discharge lamp of the 3rd embodiment of the present utility model.
Fig. 4 is the structural representation of expression according to the external electrode formula cold-cathode gas discharge lamp of the 4th embodiment of the present utility model.
Embodiment
Fig. 1 is the external electrode formula cold-cathode gas discharge lamp according to first embodiment of the present utility model, is specially the structural representation of cold-cathode fluorescence lamp.Referring to Fig. 1, cold-cathode fluorescence lamp of the present utility model comprises quartz glass lamp vessel 2, is coated in the phosphor powder layer 3 on quartz glass lamp vessel 2 inwalls, encloses gas (for example inert gas) 5 and mercury in the pipe, and the external electrode 1 that is arranged on the lamp tube end outside.Wherein, external electrode 1 comprises and is coated in the lamp tube end outer surface, i.e. conductive layer on the end outer surface of quartz glass lamp vessel 2 (for example with silver slurry conductive layer).In the present embodiment, the conductive layer of external electrode is coated in lamp tube end and comprises on the outer surface at fluorescent tube top, that is, whole lamp tube end all is coated with the conductive layer of having expired external electrode.But applying on the inwall of quartz glass lamp vessel of this conductive layer at the lamp tube end outer surface is not apply fluorescent material.The conductive layer of external electrode 1 for example accounts for 10% to 15% of whole fluorescent tube length along the length on the fluorescent tube length direction.
Preferably, described conductive layer comprises the SnO layer and the conducting metal slurry that is coated on this SnO layer, for example conductive silver paste that is coated on the described lamp tube end outer surface.
Compare with the fluorescent tube that simple glass is made, external electrode formula cold-cathode fluorescence lamp according to this first embodiment, the quartz glass that has applied fluorescent material is more difficult through ultraviolet ray, so ultraviolet ray can not come out from the fluorescent tube internal leakage basically, thereby avoided fluorescent tube the infringement of object on every side to be installed to the injury of human body and to fluorescent tube.
Fig. 2 is the external electrode formula cold-cathode gas discharge lamp according to second embodiment of the present utility model, is specially the structural representation of cold-cathode fluorescence lamp.Referring to Fig. 2, the external electrode formula cold-cathode fluorescence lamp of present embodiment and the difference of first embodiment are that the conductive layer of external electrode is not coated with completely whole lamp tube end, but are coated in lamp tube end near on the outer surface at fluorescent tube top, that is, the fluorescent tube top is a coated with conductive layer not.Experimental result shows that the fluorescent lamp of first embodiment that the external electrode formula cold-cathode fluorescence lamp of second embodiment of employing compares has bigger discharging current.During use, conductive contact (not shown) for example can be set on the external electrode conductive layer of lamp tube end, be the cathode fluorescent tube power supply.
Fig. 3 and Fig. 4 are the external electrode formula cold-cathode gas discharge lamp of expression according to third and fourth embodiment of the present utility model, are specially the structural representation of ultra-violet lamp.Different with structure illustrated in figures 1 and 2 is, does not apply fluorescent material 3 on the inwall of quartz glass lamp vessel, that is, fluorescent tube is a transparence, so that outwards emission of ultraviolet ray.Gases such as argon and neon are enclosed in the inside of fluorescent tube, and ultraviolet wavelength for example is 253.7nm.Further, also can enclose the gas xenon again in fluorescent tube inside, except ultraviolet ray, fluorescent tube can also send ozone.Be used for sterilization and sterilization etc. in fields such as medical treatment and industry.According to external cold-cathode gas discharge lamp of the present utility model, because fluorescent tube inside is not provided with electrode, greatly reduce the production cost and the manufacture difficulty of fluorescent tube, reduced the many quality problems that cause because of internal electrode.More owing to adopted simple substance, uniform quartz glass as fluorescent tube, electrolyte is identical everywhere on surface of the light tube, and intraductal electric current is even, and fluorescent tube is difficult for being punctured by electric current, and working life can reach more than 20000 hours.And external electrode adopts long electrode, thereby has increased operating current, when as illuminating lamp the output brightness of lamp is improved greatly; When as ultra-violet lamp, can strengthen the effect of sterilization and sterilization etc. in fields such as medical treatment and industry.
More than the description of each embodiment of the present utility model is intended to help understanding and understanding to external electrode formula cathode fluorescent tube of the present utility model, in the scope that does not break away from the utility model appended claims, those skilled in the art also can make various conversion and improvement to this, but this conversion and improvement all belong to scope of the present utility model.
Claims (11)
1. a cold-cathode gas discharge lamp comprises fluorescent tube, encloses gas and mercury in the pipe, and the external electrode that is arranged on the lamp tube end outside, it is characterized in that described fluorescent tube is the elongated shape quartz glass lamp vessel, described external electrode comprises the conductive layer that is coated on the described lamp tube end outer surface.
2. cold-cathode gas discharge lamp as claimed in claim 1 is characterized in that described fluorescent tube applies fluorescent material on the inwall of the other parts except that outer surface coated with conductive layer.
3. cold-cathode gas discharge lamp as claimed in claim 1 is characterized in that described fluorescent tube applies fluorescent material on the inwall of the other parts except that fluorescent tube top and outer surface coated with conductive layer.
4. as the arbitrary described gaseous discharge lamp of claim 1 to 3, it is characterized in that the conductive layer of described external electrode accounts for the 10%-15% of whole fluorescent tube length along the length of fluorescent tube length direction.
5. as the arbitrary described gaseous discharge lamp of claim 1 to 3, it is characterized in that the conductive layer of described external electrode is coated in described lamp tube end near on the outer surface at fluorescent tube top.
6. as the described gaseous discharge lamp of claim 1 to 3, it is characterized in that the conductive layer of described external electrode is coated in described lamp tube end and comprises on the outer surface at fluorescent tube top.
7. as the arbitrary described gaseous discharge lamp of claim 1 to 3, it is characterized in that described gas is inert gas.
8. as the arbitrary described gaseous discharge lamp of claim 1 to 3, it is characterized in that also comprising the conductive contact that is arranged on the described conductive layer.
9. as claim 1 or 3 described gaseous discharge lamps, it is characterized in that described gas comprises argon and neon.
10. gaseous discharge lamp as claimed in claim 9 is characterized in that described gas also comprises xenon.
11., it is characterized in that described conductive layer comprises SnO layer that is coated on the described lamp tube end outer surface and the conducting metal slurry that is coated on this SnO layer as the arbitrary described gaseous discharge lamp of claim 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201124711U CN201219098Y (en) | 2008-04-23 | 2008-04-23 | Cold cathode air discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201124711U CN201219098Y (en) | 2008-04-23 | 2008-04-23 | Cold cathode air discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201219098Y true CN201219098Y (en) | 2009-04-08 |
Family
ID=40541933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201124711U Expired - Fee Related CN201219098Y (en) | 2008-04-23 | 2008-04-23 | Cold cathode air discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201219098Y (en) |
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2008
- 2008-04-23 CN CNU2008201124711U patent/CN201219098Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN NANGUANG ELECTRIC APPLIANCE CO., LTD. Free format text: FORMER OWNER: ZHOU LILI Effective date: 20100402 Free format text: FORMER OWNER: ZHOU LIXING |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: ROOM D, /, C, FLOOR 1, RONGYA INDUSTRIAL HALL, NO.381-389, SHA TSUI ROAD, TSUEN WAN,HONG KONG, CHINA TO: 523477 GONGYE AVENUE,XINCHENG INDUSTRIAL DISTRICT, HENGLI TOWN, DONGGUAN CITY, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100402 Address after: 523477 Guangdong province Dongguan City Hengli Town Xincheng Industrial Zone Industrial Avenue Patentee after: Dongguan Nam Kwong Electric Co., Ltd. Address before: Room 1, building C/D, wing Rong industrial hall, 381-389 Sha Tsui Road, Tsuen Wan, Hongkong, China Patentee before: Zhou Lili Patentee before: Zhou Lixing |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090408 Termination date: 20130423 |