CN2443488Y - Cold cathode fluorescent lamp - Google Patents
Cold cathode fluorescent lamp Download PDFInfo
- Publication number
- CN2443488Y CN2443488Y CN 00255456 CN00255456U CN2443488Y CN 2443488 Y CN2443488 Y CN 2443488Y CN 00255456 CN00255456 CN 00255456 CN 00255456 U CN00255456 U CN 00255456U CN 2443488 Y CN2443488 Y CN 2443488Y
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- China
- Prior art keywords
- cathode fluorescent
- lamp
- driver
- winding
- cold
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Abstract
The utility model relates to a cold cathode fluorescent lighting lamp, which comprises at least one cold cathode fluorescent lamp tube, a light transmission container, a driver and an outer shell thereof, and a lamp cap, wherein, the lamp tube is fixed at the top of the outer shell and is connected with an output end of the driver; an input end of the driver is connected with external voltage via the lamp cap; the driver is positioned in the outer shell thereof and the lamp cap. The utility model uses two NPN and PNP type transistors with complementary polarity, and uses one current limiting inductor and peripheral components to control the alternating oscillation switch work of the cold cathode fluorescent lighting lamp. The utility model has the characteristics of long service life, high efficiency, small volume, small electromagnetic interference, etc.
Description
The utility model relates to a kind of cold-cathode fluorescent lamp, can be used to make the little cold-cathode fluorescent lamp of long-life, high efficiency and electromagnetic interference, be used for replacing tungsten lamp and hot cathode compact fluorescent lamp.
In the prior art, tungsten lamp and hot cathode compact fluorescent lamp are the illuminating lamps of using always, and the former price is low, but luminous efficiency is very low, and the life-span is short; Latter's efficient height, but the life-span is short.
Cold-cathode fluorescence lamp has the advantage that the life-span is long, efficient is high, but owing to the High Level AC Voltage with 10KC to 100KC, 500V to 5 kilovolt drives, the general volume of drive circuit is bigger, and electromagnetic interference is more serious.
The purpose of this utility model is to overcome the deficiency of above-mentioned existence, and the cold-cathode fluorescent lamp that a kind of life-span is long, volume is similar to ordinary incandescent lamp, electromagnetic interference is little is provided.
The purpose of this utility model is finished by following technical solution, it comprises that at least one quilt curves the cathode fluorescent tube of definite shape, a light transmission container, driver and shell thereof, a lamp holder, it is characterized in that driver is positioned in shell and the lamp holder, this driver input end links to each other with lamp holder, and output links to each other with cathode fluorescent tube two termination electrodes.
The wall thickness of described cathode fluorescent tube is that 0.2-0.8mm, internal diameter are the thin wall tubule glass tube of 1-8mm.
Described light transmission container is glass or plastics cell-shell, is transparent, irreflexive or part has a reflector; Its shape can be similar to common tungsten lamp bubble, also can be candle, dried mushroom shape or other shapes.
Described driver is a compact package, uses the insulating heat-conduction material embedding in aggregates.
Driver described in the utility model, it mainly is made of voltage stabilizing rectification circuit and higher-order of oscillation switching circuit, it is characterized in that described higher-order of oscillation switching circuit includes the NPN of two complementations, PNP transistor, two transistorized emitters are connected together, and be connected to by a resistance on the intermediate contact of a current-limiting inductance of forming by two coil windings, one of them is the output winding winding, another is the feedback coil winding, one end points of this feedback coil winding is connected on two transistorized base stages by capacitor current potential device, and the direction of winding of output winding winding and feedback coil winding should satisfy, and two transistors work in the positive feedback state in the circuit.
Be connected to a resistor between described transistorized collector electrode and the base stage, be connected with resistor at the positive terminal of transistorized emitter and DC power supply.
Description of drawings is as follows:
Fig. 1 is the structural representation of small size cold-cathode fluorescent lamp of the present utility model.
Fig. 2 is the circuit theory diagrams of the driver of cold-cathode fluorescence lamp of the present utility model.
Fig. 1 is the structural representation of small size cold-cathode fluorescent lamp of the present utility model, has at least one quilt to curve the cathode fluorescent tube 1 of definite shape among the figure, is the example of helical lamp shown in the figure, and light transmission container 2 is the cell-shell of glass or plastics.Transparent, irreflexive or part that described cell-shell 2 can be has the reflector; The utility model also comprises driver 3 in addition, moulds shell 4, lamp holder 5.Mould shell 4 and be used for fixing fluorescent tube 1 and cell-shell 2, and be connected with lamp holder 5.Lamp holder 5 is used to connect external voltage, and the input of driver 36 links to each other with lamp holder through going between, and its output 7 links to each other with the electrode 8 of cathode fluorescent tube through going between.Be filled with discharge materials such as mercury, neon, argon in the fluorescent tube 1.When external power after lamp holder 5 is connected, the output voltage of driver 3 can make gas discharge in the fluorescent tube, the luminescent powder 12 on ultraviolet ray excited fluorescent tube 1 inwall of discharge generation produces visible lights, thereby can be used for illumination.
Described fluorescent tube 1 is the thin wall tubule glass tube, and its wall thickness is 0.2 to 0.8mm, and its internal diameter is 1 to 8mm.Thin-walled (for example 0.4mm) tubule footpath (for example internal diameter 2.5mm) can be made into plays bright lamp fast.
Can there be at least two outstanding 10 at described shell 4 tops of moulding, be used for fixing fluorescent tube 1 and the part that covers the easy blackening of lamp tube electrode.
The circuit of driver 3 as shown in Figure 2.Its operation principle is as follows: 11,12 is alternating current (for example 220V, 50HZ or 120V, 60HZ etc.) input, is in series with fuse 13 in the circuit; The input AC electricity converts direct voltage to behind diode 14,15,16,17 and filter capacitor 18,19 rectifying and wave-filterings.Current-limiting inductance 24, NPN transistor 32 and other peripheral element are formed higher-order of oscillation switching circuit, direct voltage is transformed into the high-frequency ac voltage that frequency is 10K-100KHz, current-limiting inductance 24 has two coil windings, is respectively output winding winding 22 and feedback coil winding 23.The oscillatory feedback high-frequency current is transported to the base stage of two switching transistors 26 and 32 by capacitor 35, resistor 34,33.The direction of winding of output winding winding 22 and feedback coil winding 23 should satisfy that transistor 26 and 32 works in the positive feedback state in the circuit.Circuit oscillation can guarantee two switching transistors 26 and 32 alternation switch work later on.And output to the elementary winding 38 of high frequency transformer 37 by the coil windings 22 of current-limiting inductance 24, after winding 39 boosted, the output high-frequency high-voltage current was lighted cold cathode fluorescent lamp 20.
In the circuit, resistor 27 two ends connect the collector electrode and the base stage of transistor 32 respectively, and resistor 36 is connected in the anode of DC power supply and the emitter of transistor 26,32.After line power was connected, resistor 27 and 36 was set up little electric current initialization state for transistor 32.Because the coil windings 22 and 23 positive feedback current that provided of current-limiting inductance 24.Make transistor 32 enter the higher-order of oscillation, and make transistor 26 and 32 set up the alternation switch state rapidly.Inductance 31 and resistance 28 are used to reduce electromagnetic interference.The whole embedding of insulating heat-conduction material of whole described driver.Have that volume is little, advantage such as reliable operation, electromagnetic interference are little.
The utility model compared with prior art, have the life-span long, efficient is high, volume is little, driving is electric The advantages such as the road is simple, electromagnetic interference is low.
Claims (6)
1, a kind of cold-cathode fluorescent lamp, comprise that at least one quilt curves the cathode fluorescent tube of definite shape (1), a light transmission container (2), a driver (3) and shell (4) thereof, a lamp holder (5), it is characterized in that driver (3) is positioned in shell (4) and the lamp holder (5), this driver input end (6) links to each other with lamp holder (5), and output (7) links to each other with cathode fluorescent tube two termination electrodes (8).
2, cold-cathode fluorescent lamp as claimed in claim 1, the wall thickness that it is characterized in that described cathode fluorescent tube (1) are that 0.2-0.8mm, internal diameter are the thin wall tubule glass tube of 1-8mm.
3, cold-cathode fluorescent lamp as claimed in claim 1 is characterized in that described light transmission container (2) is glass or plastics cell-shell, is transparent, irreflexive or part has a reflector; Its shape can be similar to common tungsten lamp bubble, also can be candle, dried mushroom shape or other shapes.
4, cold-cathode fluorescent lamp as claimed in claim 1 is characterized in that described driver (3) is a compact package, uses the insulating heat-conduction material embedding in aggregates.
5, cold-cathode fluorescent lamp as claimed in claim 4, it is characterized in that described driver mainly is made of voltage stabilizing rectification circuit and higher-order of oscillation switching circuit, described higher-order of oscillation switching circuit includes the NPN of two complementations, PNP transistor (26,32), two transistorized emitters are connected together, and be connected to by a resistance (29) on the intermediate contact of a current-limiting inductance (24) of forming by two coil windings, one of them is output winding winding (22), another is feedback coil winding (23), one end points of this feedback coil winding (23) is by capacitor (35), potentiometer (34,33) be connected to two transistors (26,32) on the base stage, and the direction of winding of output winding winding (22) and feedback coil winding (23) should satisfy two transistors (26 in the circuit, 32) work in the positive feedback state.
6, the driver of cold-cathode fluorescence lamp illuminating lamp as claimed in claim 5, it is characterized in that being connected between the collector electrode of described transistor (32) and the base stage electricity group device (27), be connected with resistor (36) at the emitter of transistor (26,32) and the positive terminal of DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00255456 CN2443488Y (en) | 2000-09-29 | 2000-09-29 | Cold cathode fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00255456 CN2443488Y (en) | 2000-09-29 | 2000-09-29 | Cold cathode fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2443488Y true CN2443488Y (en) | 2001-08-15 |
Family
ID=33612438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00255456 Expired - Lifetime CN2443488Y (en) | 2000-09-29 | 2000-09-29 | Cold cathode fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2443488Y (en) |
-
2000
- 2000-09-29 CN CN 00255456 patent/CN2443488Y/en not_active Expired - Lifetime
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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: HANGZHOU KENAI LIGHTING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: GE SHICHAO Effective date: 20080509 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080509 Address after: Hangzhou City, Zhejiang Province, 628 West Road, room No. 213, zip code: 310012 Patentee after: Hangzhou Kenai Lighting Technology Co. Ltd. Address before: Room 2, Room 203, Lane 310012, Wen two street, Zhejiang, Hangzhou, China Patentee before: Ge Shichao |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20100929 Granted publication date: 20010815 |