CN2181792Y

CN2181792Y - Energy-saving life prolonged fluorescent lamp

Info

Publication number: CN2181792Y
Application number: CN 94226215
Authority: CN
Inventors: 金忠省
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-04
Filing date: 1994-02-04
Publication date: 1994-11-02
Anticipated expiration: 2004-02-04

Abstract

The utility model discloses an energy-saving life prolonged fluorescent lamp. The utility model has the main structure that a working return circuit is composed of a switch K, an iron core inductor L and a fluorescent tube D; base pins at both ends of a fluorescent strip lamp D are respectively parallelly connected with normally open contacts J4 and J6 of a relay J; the preheating circuit of the energy-saving life prolonged fluorescent strip lamp is composed of a normally closed contact J5 and a current-limiting resistor R0. A time control circuit causes the strip lamp to automatically regulate preheating time with the size of voltage, the J4 and the J6 to be closed, and the J5 to be switched off. With the utility model, the life of the strip lamp can be prolonged by more than four times; electricity can be saved by 18-25%; the energy-saving life prolonged fluorescent lamp can still be preheated and lit to work, when the voltages of a power supply is decreased to 150V.

Description

Energy-saving life prolonged fluorescent lamp

The utility model relates to fluorescent lamp.

Existing fluorescent lamp generally is made up of fluorescent tube, ballast, starter, though simple in structure, luminous efficiency is high, luminosity is soft, also has following several problem.

1, starter is by adorning a fixed contact and a moving contact switch of being made by bimetal leaf in the gas-filled tube.When only reaching starting voltage, gas just can discharge in the pipe, and glow current heating bi-metal plate deformed is upheld with fixed contact and joined, and carries out preheating and connect filament.Bimetal leaf is heated the time that the back contacts with fixed contact, and promptly there is following relation in the length of filament preheating time with supply voltage, promptly when voltage was high, glow current was big, bimetal leaf heating temperature height, the time that it is contacted with fixed contact is long, and the time of filament pre-heating is also long; Filament will cause the electronics powder that applies on the filament to be easy to come off under big electric current, long-time preheating situation, quickens filament and wears out.Otherwise when voltage was low, glow current was little, and the bimetal leaf heating temperature is low, and short time of contact with fixed contact, filament preheating time is short, and preheat curent is also little, did not reach the requirement of preheating build-up of luminance sometimes and re-lighting just can make fluorescent tube light several times.Also can cause the filament electronic powder for the insufficient take-off repeatedly of preheating and to come off.When voltage was lower than starter glow discharge voltage, then lamp can not be lighted at all.

2, during the fluorescent lamp operate as normal, because fluorescent tube is in single pin power supply state, promptly the two groups of filament in the fluorescent tube has only the pin of an end to be connected to power supply respectively, therefore makes one " focus " of filament and the formation of feeder ear pin junction.The current strength at its focus place is the rated current of fluorescent lamp, and the current strength of the other end of filament and filament leg junction is zero.Because filament heating is inhomogeneous, cause power " focus " of an end of filament overheated and rubescent, quicken filament top layer electronics powder come off and filament is aging, fracture.The tungsten molecule evaporation diffusion of filament makes the lamp tube ends blackening, also is diffused in the mercury gas simultaneously, and fluorescent tube illumination is reduced.Since overheated also loss electric energy.

3, the filament cold-state resistance of fluorescent tube is much smaller than its hot resistance, and filament will be subjected to the impact of big electric current when starting, make filament breaking easily, and loss electric energy.Experiment showed, every starting once, will shorten 1 to 2 hour fluorescent tube rated life time.

For addressing the above problem, both at home and abroad once development and design multiple daylight lamp energy-saving lengthen the life circuit and device.As No. 008413 patent of France, No. 85201206 patents of No. 017472 patent of Britain and China etc.But the overcurrent problem when they have all only solved the lamp starting.My No. 86102075 patent realized that the energy-conservation and fluorescent tube of filament lengthens the life, but adopted conventional starter.

The purpose of this utility model is, a kind of connecting bicycle pedal to cycling shoes is provided, particular job circuit during by fluorescent start and work, make fluorescent lamp can regulate the warm-up time of heater current automatically with the height of supply power voltage, make fluorescent tube be preheated to optimum state and start and light, and can eliminate the harm of the impact of big electric current filament; Also make fluorescent lamp when normal illumination, be in energy-saving, service life prolonged state.

The technical solution of the utility model is that it has K switch, iron inductance L, the fluorescent lamp D in formation work loop, it is characterized in that described iron inductance has tap, by iron inductance L, rectifier bridge Z, the filter capacitor C of this band tap ₁, resistance R ₁With R ₂, capacitor C ₂, transistor BG, relay J constitute starting ballast SL, capacitor C ₂And resistance R ₁Its electric capacity one of series connection back terminate at extreme and its resistance terminal of "-" of rectifier bridge Z be connected on rectifier bridge Z "+" extreme, one of rectifier bridge Z ac input end is terminated at the tap of described inductance L and its other end is connected with relay normally open contact J4 fixed contact common port (1) with inductance L, the normally opened contact J of relay J ₁Same capacitor C ₂Parallel connection, resistance R ₂Be connected on base stage and the capacitor C of transistor BG ₂Same resistance R ₁Common junction between, the normally opened contact J of relay J ₂Be connected in parallel between the collector electrode of transistor BG and the emitter and described emitter to be connected to "-" of rectifier bridge Z extreme, the coil one of relay J terminates at the collector electrode of transistor BG and its other end joins capacitor C with "+" utmost point of rectifier bridge Z ₁Two ends join with the output of rectifier bridge Z respectively, and the pin of fluorescent tube D (1) (4) is parallel with relay J normally opened contact J ₄And its pin (2) (3) is parallel with its normally opened contact J ₃, the normally-closed contact J of relay J ₅Same resistance R ₀Be connected on after the series connection on the described pin (3) (4).

Make below in conjunction with accompanying drawing and to further specify.

Description of drawings: Fig. 1 is an actual circuit structure, and Fig. 2 is the circuit connection diagram when the starting ballast is made single piece.

As shown in Figure 1 structure of the present utility model and operation principle. After power switch K closure, fluorescent tube D filament begins preheating. The filament pre-heating loop is: power supply one end is through K switch, inductance L and J₄Filament, resistance R in parallel₀, contact J₅, and J₃Filament in parallel is to the power supply other end. The alternating voltage of being obtained by tap and the other end of inductance L simultaneously is through rectifier bridge Z rectification, capacitor C₁The DC voltage of filtering is supplied with starting time control circuit power supply. The course of work is that electric current is through R₁, normally opened contact J₁To capacitor C₂Charging reaches triode BG conducting and during the relay J adhesive through a period of time time-delay charging voltage, its normally-closed contact J₅Disconnecting preheating circuit lights lamp. While its normally opened contact J₄、J ₃Closure, respectively with two groups of filament short circuits, the filament both feet are powered operation simultaneously. Normally opened contact J₂Closure makes the relay J self-locking. Normally opened contact J₁Closure makes C₂Rapidly discharge. When a filament pre-heating deficiency failed to make lamp to light, then relay repeated again the above-mentioned course of work, until till lamp is lighted immediately because ac circuit outage dead electricity resets. The preheating time of filament is by R₁C ₁Time constant determines, and has such relation with supply voltage, and namely when voltage was high, the direct current supply voltage of time control circuit was also high, capacitor C₂Charging interval is short, transistor BG conducting, relay J adhesive, J₅The time that disconnects is also short, and filament preheating time is also short. Otherwise when supply voltage was low, filament preheating time was just long. With and realized along with the height of supply voltage filament preheating time being controlled automatically, from the fluorescent lamp of 220 volts of power works of rated voltage, when voltage is low to moderate 150 volts, also can make filament pre-heating and light work. R₀The big electric current of restriction starting-impact is to the infringement of filament, C₀Be condenser for power factor improvement.

Because the change of fluorescent lamp duty, realized during illumination work that the every end both feet of fluorescent tube power simultaneously, make two " focus " of filament and two pin connecting portions formation, the current strength at its focus place is half of rated current. Be not difficult to find out, after fluorescent lamp adopts double-legged power supply mode, filament and each pin junction, 1/4th the when heat that produces because of heating effect of current is single pin power supply. Therefore prevent that effectively filament is overheated. Make filament be difficult for aging, fracture, better solved the problems such as the too early blackout of fluorescent tube, prolonged the specified service life of fluorescent tube.

As known from the above, the impact of big electric current when having reduced the thermal losses of filament in the fluorescent tube and having avoided the fluorescent lamp starting owing to the utility model is so can make in the fluorescent lamp starting process with normal Effectively save electric energy during work, power saving rate reaches 18% to 25%, but and specified service life of prolonging lamp tube more than four times. Because filament preheating time has been realized automatic control with the height of supply voltage, thus can make fluorescent lamp when being lower than rated voltage (for example 220 volts of rated voltages and be low to moderate 150 volts), also can start reliably the work of lighting, thus effectively realized purpose of design.

Embodiment: according to the utility model of accompanying drawing and said structure, adopt 220 volts of mains supplies, fluorescent tube is 40 watts, relay J adopts midget relay, and will start ballast SL and make single piece, connection constitutes the connecting bicycle pedal to cycling shoes product of the utility model as shown in Figure 2, and the complete fluorescent lamp of its available conventional lamp bracket assembling also can be used for existing light fixture repacking.

Claims

1, a kind of connecting bicycle pedal to cycling shoes, K switch, iron inductance L, the fluorescent lamp D in formation work loop is characterized in that described iron inductance has tap, by iron inductance L, rectifier bridge Z, the filter capacitor C of this band tap ₁, resistance R ₁With R ₂, capacitor C ₂, transistor BG, relay J constitute starting ballast SL, capacitor C ₂And resistance R ₁Its electric capacity one of series connection back terminate at extreme and its resistance terminal of "-" of rectifier bridge be connected on rectifier bridge Z "+" extreme, an end of rectifier bridge Z ac input end is connected and its other end and inductance L and relay normally open contact J with the tap of described inductance L ₄Fixed contact common port (1) connects, the normally opened contact J of relay J ₁Same capacitor C ₂Parallel connection, resistance R ₂Be connected on base stage and the capacitor C of transistor BG ₂Same resistance R ₁Common junction between, the normally opened contact J of relay J ₂Be connected in parallel between the collector electrode of transistor BG and the emitter and described emitter to be connected to "-" of rectifier bridge Z extreme, the coil one of relay J is terminated at the collector electrode of transistor BG and its other end extremely joins with rectifier bridge Z "+", capacitor C ₁Two ends join with the output of rectifier bridge Z respectively, and the pin of fluorescent tube D (1) (4) is parallel with relay J normally opened contact J ₄And its pin (2) (3) is parallel with its normally opened contact J ₃, the normally-closed contact J of relay J ₅Same resistance R ₀Be connected on after the series connection on the described pin (3) (4).

2, connecting bicycle pedal to cycling shoes according to claim 1 is characterized in that, will constitute iron inductance L, rectifier bridge Z, the capacitor C of described starting ballast SL ₁, C ₂, resistance R ₁, R ₂, transistor BG and relay make a single piece.