CN2545702Y - Cold cathode fluorescent lamp tub - Google Patents
Cold cathode fluorescent lamp tub Download PDFInfo
- Publication number
- CN2545702Y CN2545702Y CN 01234286 CN01234286U CN2545702Y CN 2545702 Y CN2545702 Y CN 2545702Y CN 01234286 CN01234286 CN 01234286 CN 01234286 U CN01234286 U CN 01234286U CN 2545702 Y CN2545702 Y CN 2545702Y
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- Prior art keywords
- fluorescent tube
- cathode fluorescent
- wire electrode
- lamp
- electrode
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Abstract
The utility model provides a cold cathode fluorescent lamp, which comprises a glass shell, a phosphor powder which is coated on the inside wall of the glass shell, a gas which is enveloped in the tube and an electrode which is arranged at the end part of the lamp. The electrode comprises an electrode wire which is enveloped at the end part of the lamp. Two ends of the electrode wire respectively extend to the inside and the outside of the lamp. A heat insulation part is arranged on the electrode wire. According to the cold cathode fluorescent tube of the utility model, because the heat insulation part is added and arranged on the electrode, the heat inside the lamp is effectively prevented from dissipating outside the lamp. So the work temperature inside the tube is kept stable, which greatly improves the brightness and the uniformity of brightness of the whole lamp.
Description
Technical field
The utility model relates to gaseous discharge lamp, relates in particular to a kind of cathode fluorescent tube.
Background technology
Cathode fluorescent tube 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 cathode fluorescent tube is more and more wider, people require to provide power output bigger, that is the higher cathode fluorescent tube of luminosity.
Existing cathode fluorescent tube as shown in Figure 1, it comprises glass shell 2, is coated in the fluorescent material 4 on the glass shell inwall, encloses the gas (for example neon is argon-mixed and mercury vapour) 5 in the pipe, and the electrode 1 that is arranged on lamp tube end.The operating voltage of cathode fluorescent tube depends primarily on the structure and material (as tube diameter, fluorescent tube length, intraductal atmospheric pressure, electrode material and structure thereof, fluorescent tube manufacturing process or the like) of fluorescent tube itself and the requirement in the loop that lights a lamp.Therefore, after the fluorescent tube manufacturing was finished, its power output generally can great changes have taken place with the increase of operating voltage.The increase of fluorescent tube power output (being the raising of lighting tube brightness) mainly relies on the increase of electric current, and the increase of lamp current will cause the raising of lamp hole temperature.Continue, keep the working temperature of fluorescent tube inside that the brightness of fluorescent tube is improved equably, and the brightness of whole tubes is kept evenly.Yet, because the heat transfer effect of lamp tube ends electrode, the heat dissipation of lamp tube ends is more when making fluorescent tube work, thereby causes the temperature reduction near the electrode district of lamp tube ends, make its luminosity be lower than the middle section of fluorescent tube, the brightness irregularities of whole tubes.
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 a kind of luminosity height and even brightness cathode fluorescent tube are provided.
According to the utility model, a kind of cathode fluorescent tube is provided, it comprises glass shell, be coated in the fluorescent material on the glass shell inwall, enclose the gas in the pipe, and the electrode that is arranged on lamp tube end, described electrode comprises the wire electrode that is encapsulated in lamp tube end, inboard and the fluorescent tube outside extension to fluorescent tube respectively of the two ends of described wire electrode is provided with an insulating portion on the described wire electrode.
According to above-mentioned cathode fluorescent tube of the present utility model, wherein, described insulating portion be set in place in lamp tube end or the wire electrode in lamp tube end inboard or the lamp tube end outside on
According to above-mentioned cathode fluorescent tube of the present utility model, wherein, described insulating portion is included in the heat dam structure of radially digging on the described wire electrode.
According to above-mentioned cathode fluorescent tube of the present utility model, wherein, described insulating portion is included at least one breach of radially digging on the described wire electrode.
According to cathode fluorescent tube of the present utility model, owing on electrode, increased insulating portion, so intercepted heat scattering and disappearing outside fluorescent tube in the fluorescent tube effectively, thereby can keep stable working temperature in the fluorescent tube, improved the brightness and the brightness uniformity thereof of whole tubes.
Description of drawings
Hereinafter with reference to drawings and Examples cathode fluorescent tube 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 the cathode fluorescent tube of expression prior art.
Fig. 2 is the structural representation of expression according to the cathode fluorescent tube of first embodiment of the present utility model.
Fig. 3 is the structural representation of expression according to the cathode fluorescent tube of second embodiment of the present utility model.
Embodiment
Fig. 2 is the structural representation according to the cathode fluorescent tube of first embodiment of the present utility model.It comprises glass shell 2, be coated in the fluorescent material 4 on glass shell 2 inwalls, enclose the gas 5 in the pipe, and the electrode 1 that is arranged on lamp tube end, described electrode 1 comprises the wire electrode 12 that is encapsulated in lamp tube end, the inboard and fluorescent tube outside extension to fluorescent tube respectively of the two ends of described wire electrode 12.Different with fluorescent tube shown in Figure 1, the cathode fluorescent tube of present embodiment is provided with an insulating portion on the wire electrode (for example using tungsten filament) 12 of electrode 1.Fig. 2 A is the enlarged diagram of this insulating portion of expression.This insulating portion is to form by radially digging a heat dam structure 14 on the wire electrode 12 in enclosing lamp tube end.The degree of depth of the heat dam structure 14 of this cutting for example is the 1/10-8/10 of the diameter of the wire electrode 12 do not dug.
Fig. 3 is the structural representation according to the cathode fluorescent tube of second embodiment of the present utility model.As a kind of replacement of insulating portion shown in Figure 2, insulating portion shown in Figure 3 is to form by radially digging at least one breach 15 on the wire electrode 12 in enclosing lamp tube end.Fig. 3 A to 3E shows the different shape and the relative position thereof of above-mentioned breach 15 respectively.As shown in Figure 3A, radially for example dig a circular arc cutaway 151 in a side of wire electrode 12 along it.Insulating portion shown in Fig. 3 B is that the relative both sides (being on the position at relative 180 ° of angles) at wire electrode 12 are radially respectively dug a circular arc cutaway 151 and formed, and each breach 15 is about the 0.8-2 millimeter along the spacing of wire electrode between axially.As a kind of replacement, above-mentioned breach 15 also can be shaped as trapeze cut 152 (shown in Fig. 3 C), round end rectangular indentation 153 (shown in Fig. 3 D) or round end trapeze cut 154 (shown in Fig. 3 E).Above-mentioned breach 15 is about the 1/10-8/10 of wire electrode diameter along the wire electrode degree of depth radially, is about the 0.2-0.8 millimeter along the axial width of wire electrode.
Above-mentioned insulating portion is set in place on the wire electrode 12 in lamp tube end.But above-mentioned insulating portion also can be set in place on the wire electrode 12 in the lamp tube end inboard or the outside, can obtain same effect.
When the heat in the cathode fluorescent tube conducts outside fluorescent tube by electrode 1, because the iris action of heat dam 14 is arranged, can make fluorescent tube pass through the outside dispersed heat of pipe end reduce about 30% to 85%, thereby can keep the temperature stabilization of electrode district, improved the brightness uniformity of whole tubes.Generally speaking, adopt brightness homogeneous area in the cathode fluorescent tube of the foregoing description (promptly reaching 80% zone of fluorescent tube maximum brightness) to have improved the result of use of cathode fluorescent tube greatly than the about 10-15 mm length of original increase.
More than the description of each embodiment of the present utility model is intended to help understanding and understanding to 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 (10)
1. cathode fluorescent tube, comprise glass shell, be coated in the fluorescent material on the glass shell inwall, enclose the gas in the pipe, and the electrode that is arranged on lamp tube end, described electrode comprises the wire electrode that is encapsulated in lamp tube end, the inboard and fluorescent tube outside extension to fluorescent tube respectively of the two ends of described wire electrode, it is characterized in that, an insulating portion is set on the described wire electrode.
2. cathode fluorescent tube as claimed in claim 1 is characterized in that, described insulating portion be set in place in lamp tube end or the wire electrode in lamp tube end inboard or the lamp tube end outside on.
3. cathode fluorescent tube as claimed in claim 1 or 2 is characterized in that, described insulating portion is included in the heat dam structure of radially digging on the described wire electrode.
4. cathode fluorescent tube as claimed in claim 3 is characterized in that, the degree of depth of the heat dam structure of described cutting is the 1/10-8/10 of the diameter of the wire electrode do not dug.
5. cathode fluorescent tube as claimed in claim 1 or 2 is characterized in that, described insulating portion is included at least one breach of radially digging on the described wire electrode.
6. cathode fluorescent tube as claimed in claim 5 is characterized in that, described breach is arranged on the relative both sides of described wire electrode.
7. cathode fluorescent tube as claimed in claim 6 is characterized in that, described each breach is the 0.8-2 millimeter along the spacing of wire electrode between axially.
8. as the arbitrary described cathode fluorescent tube of claim 5 to 7, it is characterized in that described breach is circular arc cutaway, trapeze cut, round end rectangular indentation or round end trapeze cut.
9. as the arbitrary described cathode fluorescent tube of claim 5 to 7, it is characterized in that described breach is the 1/10-8/10 of wire electrode diameter along the wire electrode degree of depth radially.
10. as the arbitrary described cathode fluorescent tube of claim 5 to 7, it is characterized in that described breach is the 0.2-0.8 millimeter along the axial width of wire electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01234286 CN2545702Y (en) | 2001-09-29 | 2001-09-29 | Cold cathode fluorescent lamp tub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01234286 CN2545702Y (en) | 2001-09-29 | 2001-09-29 | Cold cathode fluorescent lamp tub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2545702Y true CN2545702Y (en) | 2003-04-16 |
Family
ID=33647825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01234286 Expired - Fee Related CN2545702Y (en) | 2001-09-29 | 2001-09-29 | Cold cathode fluorescent lamp tub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2545702Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100351991C (en) * | 2004-06-25 | 2007-11-28 | 日本电气株式会社 | Cold cathode fluorescent lamp with improved cathode |
-
2001
- 2001-09-29 CN CN 01234286 patent/CN2545702Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100351991C (en) * | 2004-06-25 | 2007-11-28 | 日本电气株式会社 | Cold cathode fluorescent lamp with improved cathode |
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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: BEIJING SHIN STONE DIGITAL TECHNOLOGY CO.,LTD. Free format text: FORMER OWNER: DONGGUAN NANGUANG ELECTRICAL APPLIANCES CO., LTD. Free format text: FORMER OWNER: ZHOU CHENGXIANG ZHOU LILI Effective date: 20040716 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20040716 Address after: 100086, Shen Fengjiao, 25 West Third Ring Road, Beijing, Haidian District Patentee after: Beijing Shentong Digital Technology Co., Ltd. Address before: Metro Industrial Park, Hengli Town, Guangdong city of Dongguan province 523477 Co-patentee before: Zhou Chengxiang Patentee before: Dongguan Nam Kwong Electric Co., Ltd. Co-patentee before: Zhou Lili |
|
| DD01 | Delivery of document by public notice |
Addressee: Beijing Shentong Digital Technology Co., Ltd. Document name: Notification to Pay the Fees |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030416 Termination date: 20100929 |