CN2662588Y - Preheating daylight lamp filament ballast - Google Patents
Preheating daylight lamp filament ballast Download PDFInfo
- Publication number
- CN2662588Y CN2662588Y CN 03276897 CN03276897U CN2662588Y CN 2662588 Y CN2662588 Y CN 2662588Y CN 03276897 CN03276897 CN 03276897 CN 03276897 U CN03276897 U CN 03276897U CN 2662588 Y CN2662588 Y CN 2662588Y
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- China
- Prior art keywords
- filament
- model
- utility
- fluorescent lamp
- ballast
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a preheat filament ballast current reduction device of fluorescent light and comprises a temperature coefficient heat variable resistance. The utility model is installed on the output end of the electric ballast or the lamp cap of fluorescent light. The two leading-out lines of the negative temperature coefficient heat variable resistance are connected with the two leading out lines of the fluorescent light in parallel. The utility model has low cost and is safe and reliable to use. Furthermore, the utility model can ensure normal turning-on and working of fluorescent light, prolong the service life of the lighting tube and does not influence the operating parameters of the lighting tube and the electric ballast.
Description
Technical field
The utility model relates to fluorescent lamp tool, particularly a kind of preheating type filament of fluorescent lamp ballast.
Background technology
The desirable operating state of preheating type fluorescent lamp is to have bigger electric current to carry out preheating by filament when starting, and does not have electric current to flow on the later filament of normal ignition.But use the fluorescent lamp of electric ballast after normal ignition, still to have very big electric current to flow through on the filament at present, quickened the aging of filament, the fluorescent tube of cap part can very fast blackout, has had a strong impact on the luminous efficiency of fluorescent lamp, has shortened the useful life of fluorescent tube.
The utility model content
The purpose of this utility model is: the deficiency when overcoming the preheating type fluorescent lamp and using electric ballast work and a kind of preheating type filament of fluorescent lamp ballast of proposing, can guarantee that the preheat curent of preheating type fluorescent lamp when starting is enough big, and the electric current on the filament is enough little after the operate as normal, does not influence the various operational datas of fluorescent-lamp tube and electric ballast simultaneously.
The purpose of this utility model is achieved in that the use negative tempperature coefficient thermistor, and two lead-out wires of its two lead-out wires and filament of fluorescent lamp are connected in parallel; When the fluorescent lamp pipeline start up by preheating, the resistance of thermistor is bigger, and most of preheat curent flows through from filament, plays pre-heat effect; After the fluorescent lamp normal ignition, because the negative resistance effect of negative tempperature coefficient thermistor, cause overcurrent heating resistance to diminish, most of electric current flows through by thermistor, played the effect that reduces heater current, so both reached preheating requirement and played the purpose that filament subtracts stream yet, the operational data to fluorescent lamp and electric ballast does not exert an influence yet simultaneously.
Owing to there is the feasible cost that the utlity model has of above-mentioned structure low, safe in utilization, reliable, can guarantee normal startup of fluorescent lamp and work, it is aging effectively to reduce filament, prolonging lamp tube just use the life-span, the advantage that the operational data of electronic ballast for fluorescent lamp is not exerted an influence.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model;
Fig. 2 is a connection example schematic of the present utility model.
Embodiment
As shown in Figure 1, a kind of preheating type filament of fluorescent lamp ballast is made up of negative tempperature coefficient thermistor, it is characterized in that: two lead-out wires of negative tempperature coefficient thermistor (NTC) and two lead-out wires of filament of fluorescent lamp are connected in parallel; When fluorescent start, because the resistance of negative tempperature coefficient thermistor (NTC) is bigger, the starting current of fluorescent lamp mainly carries out preheating by filament, after fluorescent lamp is lighted work, because the negative resistance effect of negative tempperature coefficient thermistor (NTC) causes the overcurrent heating, make the resistance of negative tempperature coefficient thermistor (NTC) become very little, the operating current of this moment mainly flows through by negative tempperature coefficient thermistor (NTC), reduce the electric current that flows through filament of fluorescent lamp effectively, played the purpose that reduces the aging prolonging lamp tube service life of filament.When selecting the normal temperature resistance of negative tempperature coefficient thermistor (NTC), should determine according to matching used filament of fluorescent lamp resistance, generally should be greater than more than 4-5 times of filament of fluorescent lamp cold-state resistance, could guarantee that like this fluorescent lamp has enough big preheat curent on the filament when starting, the temperature coefficient of the negative tempperature coefficient thermistor of selecting for use (NTC) should be big as far as possible, could guarantee that so the metapyretic resistance of negative tempperature coefficient thermistor (NTC) overcurrent is enough little, really reach the purpose that filament subtracts stream.Preheating type filament of fluorescent lamp ballast can be installed in the electric ballast, also can be installed on the fluorescent lamp lamp holder or is installed in the fluorescent-lamp tube.
Claims (1)
1, a kind of preheating type filament of fluorescent lamp ballast, (NTC) forms by negative tempperature coefficient thermistor, it is characterized in that: two lead-out wires of negative tempperature coefficient thermistor (NTC) and two lead-out wires of filament of fluorescent lamp are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03276897 CN2662588Y (en) | 2003-07-16 | 2003-07-16 | Preheating daylight lamp filament ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03276897 CN2662588Y (en) | 2003-07-16 | 2003-07-16 | Preheating daylight lamp filament ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2662588Y true CN2662588Y (en) | 2004-12-08 |
Family
ID=34331719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03276897 Expired - Fee Related CN2662588Y (en) | 2003-07-16 | 2003-07-16 | Preheating daylight lamp filament ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2662588Y (en) |
-
2003
- 2003-07-16 CN CN 03276897 patent/CN2662588Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |