CN201127138Y

CN201127138Y - Starter for high-frequency fluorescent lamp and fluorescent lamp preheat circuit using the same

Info

Publication number: CN201127138Y
Application number: CNU2007200416402U
Authority: CN
Inventors: 王春柱; 史祖匡; 潘荣鑫; 王晓峰; 陈祝平
Original assignee: Taicang Lvxiang Photoelectric Technology Coltd
Current assignee: Taicang Lvxiang Photoelectric Technology Coltd
Priority date: 2007-11-26
Filing date: 2007-11-26
Publication date: 2008-10-01
Anticipated expiration: 2017-11-26

Abstract

The utility model relates to a starter for a high-frequency fluorescent lamp, which comprises a case, a static contact piece and double metal sheets sealed in the case, a first electrode end and a second electrode end, the case is filled with inert gases ionizing under high-frequency voltage, the double metal sheets have two functional modes, wherein in the first functional mode, the double metal sheets expand when heated and contact with the static contact piece; and in the second functional mode, the double metal sheets shrink when cooled and separate from the static contact piece. The starter has low cost, simple structure, small volume and convenient use. The utility mode also discloses a preheating circuit for a fluorescent lamp, which comprises a fluorescent lamp, a resonant inductor, a resonant capacitor and a starting capacitor, the preheating circuit is connected with the high-frequency oscillating source, the preheating circuit further includes the starter, by which the current flowing a filament in normal operation is nearly zero, thus the service life of the filament is extended, and the energy consumption is reduced.

Description

High-frequency florescent lamp is with starter and adopt the florescent lamp preheating circuit of this starter

Technical field

The utility model relates to a kind of high-frequency florescent lamp starter, and the florescent lamp preheating circuit that adopts this starter, is specially adapted to compact type energy-saving lamp (CFL) and straight pipe type fluorescent lamp (TL).

Background technology

According to the standard of GB/T15144-94 and the IEC-929 of International Electrotechnical Commission, when hot cathode class high-frequency florescent lamp starts, must be through certain warm-up time, to guarantee the useful life of high-frequency florescent lamp.Current high-frequency florescent lamp preheating method mainly contains following two kinds:

1, adopts the IC chip, can set pre-heat frequency, guarantee that fluorescent lamp tube has enough warm-up time.Its shortcoming is that chip price is higher, has improved the cost of florescent lamp preheating circuit, and needs to increase the peripheral circuit that much matches with chip, has increased area occupied, has limited its range of application, especially in compact type energy-saving lamp (CFL), is difficult to implement.

2, adopt positive thermistor (PTC), this positive thermistor (PTC) is in series with the filament of high-frequency florescent lamp, as shown in Figure 3, resistance is less when utilizing its temperature low, along with the rapid characteristic that increases of the rising resistance of temperature, can make the requirement of the standard that reaches warm-up time, but because positive thermistor (PTC) can't be realized real opening circuit when the fluorescent lamp operate as normal, so exist electric current in the filament of fluorescent lamp all the time, cause that emission current reduces, reduced the useful life of filament on the contrary, and positive thermistor (PTC) itself has the loss of energy, influenced the efficient of entire circuit, and, carry out quantitative analysis so be difficult to align thermistor because various fluorescent lamps are difficult to reach consistency completely, improved the difficulty of using.

Summary of the invention

The purpose of this utility model is to provide a kind of high-frequency florescent lamp starter, and its cost is lower, and is simple in structure; The utility model also provides a kind of florescent lamp preheating circuit that adopts this starter, and the electric current in the time of can making the fluorescent lamp operate as normal in the filament is almost nil.

In order to reach above purpose, the scheme that the utility model adopts is:

A kind of high-frequency florescent lamp starter, comprise cover body, be sealed in the static contact in the described cover body, be sealed in the bimetal leaf that can expand with heat and contract with cold in the described cover body, the one end other end that contacts with described static contact extends first electrode leads to client of described cover body outside, the one end other end that contacts with described bimetal leaf extends second electrode leads to client of described cover body outside, be full of the inert gas that phase ionization under high frequency voltage is arranged in the described cover body, described bimetal leaf has two operating states, first operating state is the ionization voltage that reaches or be higher than described inert gas when the voltage at starter two ends, described ionized inert gas produces heat, and described bimetal leaf expanded by heating contacts with described static contact; Second operating state is the ionization voltage that is lower than described inert gas when the voltage at starter two ends, and described bimetal leaf shrinkage also is separated with described static contact.

Described cover body material is a glass.

Described inert gas is one or more the mist in helium, neon, argon gas, krypton gas, the xenon.

The utility model also provides a kind of florescent lamp preheating circuit, comprise high-frequency agitation source, the fluorescent lamp that is connected with described high-frequency agitation source, the resonant inductance and the resonant capacitance that are in series with the filament of this fluorescent lamp, the startup electric capacity that is in parallel with the filament of described fluorescent lamp, described florescent lamp preheating circuit also comprises a starter, the heater chain that this starter and filament are in series is connected in parallel on the two ends of described startup electric capacity, described starter comprises cover body, be sealed in the static contact in the described cover body, be sealed in the bimetal leaf that can expand with heat and contract with cold in the described cover body, the one end other end that contacts with described static contact extends first electrode leads to client of described cover body outside, the one end other end that contacts with described bimetal leaf extends second electrode leads to client of described cover body outside, be full of the inert gas that phase ionization under high frequency voltage is arranged in the described cover body, the ionization voltage of this inert gas is higher than the normal working voltage of described fluorescent lamp, and the ionization voltage of this inert gas is lower than the starting voltage of described fluorescent lamp, described bimetal leaf has two operating states, first operating state is the ionization voltage that reaches or be higher than described inert gas when the voltage at described starter two ends, described ionized inert gas produces heat, and described bimetal leaf expanded by heating contacts with described static contact; Second operating state is the ionization voltage that is lower than described inert gas when the voltage at described starter two ends, and described bimetal leaf shrinks and is separated with described static contact.

Described cover body material is a glass.

Described florescent lamp preheating circuit comprises also and is used to regulate the control capacittance that high-frequency electronic fluorescent lamp is used preheating starter both end voltage pace of change that this control capacittance is connected in the described heater chain.

Because the utility model has adopted above technical scheme, so have following advantage: because the fluorescent lamp two ends are parallel with the preheating starter, this preheating starter cost is lower, simple in structure, volume is less, easy to use, and the ionization voltage of inert gas is between the starting voltage and normal working voltage of fluorescent lamp in the preheating starter, static contact during the fluorescent lamp operate as normal in the preheating starter and bimetal leaf are in the state of disengaging, heater chain is opened circuit, electric current when guaranteeing operate as normal in the filament is almost nil, in the life-span of having improved filament, has reduced energy consumption.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model high-frequency florescent lamp with starter;

Accompanying drawing 2 is the schematic diagram of the utility model florescent lamp preheating circuit;

Accompanying drawing 3 is the schematic diagram of florescent lamp preheating circuit in the prior art.

Wherein: 1, cover body; 2, static contact; 3, bimetal leaf; 4, first electrode leads to client; 4 ', second electrode leads to client; 5, inert gas; 6, heater chain.

Embodiment

As shown in Figure 1, a kind of high-frequency florescent lamp starter, comprise cover body 1, be sealed in the static contact 2 in the cover body 1, be sealed in the bimetal leaf 3 that can expand with heat and contract with cold in the cover body 1, the one end other end that contacts with static contact 2 extends first electrode leads to client 4 of cover body 1 outside, the one end other end that contacts with bimetal leaf 3 extends second electrode leads to client 4 ' of cover body 1 outside, be full of the inert gas 5 that phase ionization under high frequency voltage is arranged in the cover body 1, bimetal leaf 3 has two operating states, first operating state is the ionization voltage that reaches or be higher than inert gas 5 when the voltage at starter two ends, inert gas 5 ionization produce heat, and bimetal leaf 3 expanded by heating contact with static contact 2; Second operating state is the ionization voltage that is lower than inert gas 5 when the voltage at starter two ends, and bimetal leaf 3 shrinkages also are separated with described static contact 2.

In order to reach actual effect preferably, cover body 1 material is a glass in the present embodiment, and inert gas 5 is one or more the mist in helium, neon, argon gas, krypton gas, the xenon.

As shown in Figure 2, a kind of florescent lamp preheating circuit, resonant inductance L that comprises fluorescent lamp LAMP, is in series with the filament S of this fluorescent lamp LAMP and resonance capacitor C A, the startup capacitor C that is in parallel with the filament S of fluorescent lamp LAMP, fluorescent lamp LAMP also is connected with high-frequency agitation source A, high-frequency agitation source A generally is changed to direct current by electric main through current rectifying and wave filtering circuit, and then become high-frequency alternating current through high-frequency oscillating circuits, then by the output of slab bridge drive circuit.This florescent lamp preheating circuit also comprises an above-mentioned starter T, the heater chain 6 that this preheating starter T and filament S are in series is connected in parallel on the two ends that start capacitor C, this preheating starter T comprises cover body 1, be sealed in the static contact 2 in the cover body 1, be sealed in the bimetal leaf 3 that can expand with heat and contract with cold in the cover body 1, the one end other end that contacts with static contact 2 extends first electrode leads to client 4 of described cover body 1 outside, the one end other end that contacts with bimetal leaf 3 extends second electrode leads to client 4 ' of described cover body 1 outside, two above-mentioned electrode leads to client are connected with circuit, be full of the inert gas 5 that phase ionization under high frequency voltage is arranged in the cover body 1, the ionization voltage of this inert gas 5 is higher than the normal working voltage of described lamp LAMP, and be lower than the starting voltage of fluorescent lamp LAMP, bimetal leaf 3 has two operating states, first operating state is the ionization voltage that reaches or be higher than inert gas 5 when the voltage at starter T two ends, inert gas 5 ionization produce heat, and bimetal leaf 3 expanded by heating contact with static contact 2; Second operating state is the ionization voltage that is lower than inert gas 5 when the voltage at starter T two ends, and bimetal leaf 3 shrinks and is separated with described static contact 2.

Same above-mentioned cover body 1 material is a glass, and inert gas 5 is one or more the mist in helium, neon, argon gas, krypton gas, the xenon.

Present embodiment is in series with control capacittance CB in heater chain 6, make the variation that fluorescent-lamp-use preheating starter T both end voltage can be gradually, can better control warm-up time.

In the moment of florescent lamp preheating circuit and high-frequency agitation source A connection, fluorescent tube LAMP is high-impedance state, bimetal leaf 3 among the preheating starter T is separated with static contact 2, be equivalent to heater chain 6 and be off state, so it is very high to start the voltage at capacitor C two ends, make inert gas 5 ionization in the cover body 1, ionization produces heat, its inner bimetal leaf 3 and static contact 2 are connected, be equivalent to heater chain 6 conductings, start capacitor C two terminal shortcircuits, the quality factor q of resonant circuit is descended, cause fluorescent tube LAMP two terminal voltages not reach starting voltage, so fluorescent tube LAMP can not light immediately, thereby make circuit-formed electric current flow through filament S, resonance current carries out preheating to filament S, and when treating that fluorescent tube LAMP reaches 800 ℃～1000 ℃ good emission states, the starting voltage of fluorescent tube LAMP descends, cause that the Q value rises, rise to fluorescent tube LAMP and be activated, lamp is lighted, and fluorescent tube LAMP drops to the normal working voltage of fluorescent tube LAMP from starting voltage, warm finishes, ionization in the cover body 1 simultaneously stops, and heat sharply reduces, and bimetal leaf 3 separates with static contact 2, heater chain 6 is in off state when making operate as normal, has guaranteed that the electric current among the filament S is almost nil.

This high-frequency florescent lamp is lower with preheating starter T cost, simple in structure, volume is less, easy to use, adopted the florescent lamp preheating circuit of this starter T that met the demands warm-up time, and made heater chain 6 be in off state when making the fluorescent lamp operate as normal, the electric current when guaranteeing operate as normal among the filament S is almost nil, improve the life-span of filament S, reduced energy consumption.

The foregoing description only is a part execution mode of the present utility model, and every embodiment that does not break away from technical solutions of the utility model is protection range of the present utility model.

Claims

1, a kind of high-frequency florescent lamp starter, it is characterized in that: it comprises cover body (1), be sealed in the static contact (2) in the described cover body (1), be sealed in the bimetal leaf (3) that can expand with heat and contract with cold in the described cover body (1), the one end other end that contacts with described static contact (2) extends outside first electrode leads to client (4) of described cover body (1), the one end other end that contacts with described bimetal leaf (3) extends the second outside electrode leads to client (4 ') of described cover body (1), be full of the inert gas (5) that phase ionization under high frequency voltage is arranged in the described cover body (1), described bimetal leaf (3) has two operating states, first operating state is the ionization voltage that reaches or be higher than described inert gas (5) when the voltage at starter two ends, described inert gas (5) ionization produces heat, and described bimetal leaf (3) expanded by heating contacts with described static contact (2); Second operating state is the ionization voltage that is lower than described inert gas (5) when the voltage at starter two ends, and (3) shrinkage of described bimetal leaf also is separated with described static contact (2).

2, high-frequency florescent lamp starter according to claim 1 is characterized in that: described cover body (1) material is a glass.

3, high-frequency florescent lamp starter according to claim 1 is characterized in that: described inert gas (5) is one or more the mist in helium, neon, argon gas, krypton gas, the xenon.

4, a kind of florescent lamp preheating circuit, comprise high-frequency agitation source (A), the fluorescent lamp (LAMP) that is connected with described high-frequency agitation source (A), the resonant inductance (L) and the resonant capacitance (CA) that are in series with the filament (S) of this fluorescent lamp (LAMP), the startup electric capacity (C) that is in parallel with the filament (S) of described fluorescent lamp (LAMP), it is characterized in that: described florescent lamp preheating circuit also comprises a starter (T), the heater chain (6) that this starter (T) and filament (S) are in series is connected in parallel on the two ends of described startup electric capacity (C), described starter (T) comprises cover body (1), be sealed in the static contact (2) in the described cover body (1), be sealed in the bimetal leaf (3) that can expand with heat and contract with cold in the described cover body (1), the one end other end that contacts with described static contact (2) extends outside first electrode leads to client (4) of described cover body (1), the one end other end that contacts with described bimetal leaf (3) extends the second outside electrode leads to client (4 ') of described cover body (1), be full of the inert gas (5) that phase ionization under high frequency voltage is arranged in the described cover body (1), the ionization voltage of this inert gas (5) is higher than the normal working voltage of described fluorescent lamp (LAMP), and the ionization voltage of this inert gas (5) is lower than the starting voltage of described fluorescent lamp (LAMP), described bimetal leaf (3) has two operating states, first operating state is the ionization voltage that reaches or be higher than described inert gas (5) when the voltage at described starter (T) two ends, described inert gas (5) ionization produces heat, and described bimetal leaf (3) expanded by heating contacts with described static contact (2); Second operating state is the ionization voltage that is lower than described inert gas (5) when the voltage at described starter (T) two ends, and described bimetal leaf (3) shrinks and is separated with described static contact (2).

5, florescent lamp preheating circuit according to claim 4 is characterized in that: described cover body (1) material is a glass.

6, florescent lamp preheating circuit according to claim 4 is characterized in that: described inert gas (5) is one or more the mist in helium, neon, argon gas, krypton gas, the xenon.

7, florescent lamp preheating circuit according to claim 4, it is characterized in that: described florescent lamp preheating circuit also comprises the control capacittance (CB) that is used to regulate described starter (T) both end voltage pace of change, and this control capacittance (CB) is connected in the described heater chain (6).