CN2135897Y

CN2135897Y - Long life fluorescent lamp

Info

Publication number: CN2135897Y
Application number: CN 92230841
Authority: CN
Inventors: 陈建华
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-16
Filing date: 1992-08-16
Publication date: 1993-06-09
Anticipated expiration: 2002-08-16

Abstract

The utility model relates to a long life fluorescent lamp, which is the improvement of fluorescent lamp. One end of the induction ballast 6 of the long life fluorescent lamp is connected with one input end of a full-bridge rectifier; a power supply line 5 is respectively connected with the other end of the induction ballast 6 and the other input end of the full-bridge rectifier; the positive output pole of the full-bridge rectifier is connected with one pole of a starter 9 and one end of the filament connector of a fluorescent tube 7; the negative output pole of the full-bridge rectifier and the other pole of the starter 9 are respectively connected with the two ends of the filament of the other end of the fluorescent tube 7. When the filament of one end of the fluorescent tube is burnt out or loses the ability of emission of electrons, the fluorescent tube can be used continuously by exchanging the connection of the two ends of the fluorescent tube. The utility model has the advantages of easy starting, steady luminescence and simple structure.

Description

Long life fluorescent lamp

The utility model belongs to the electroporation field, specifically a kind of fluorescent tube light fixture in useful life that prolongs.

Present widely used fluorescent lighting fixture is made up of fluorescent tube and inductance type ballast and starter, perhaps is made up of fluorescent tube and electric ballast.Though the light fixture of being made up of high-frequency electronic ballast and fluorescent tube has energy-saving effect, also exist at present the life-span short, price is high, poor reliability (see 1991 the 6th phases of Chinese electric lighting magazine raise quiet work " fluorescent lamp high frequency electric ballast---energy-conservation and integrity problem ") and electrical network had very important Harmonic Interference problems such as (seeing 1992 the 2nd phases of Chinese electric lighting magazine, Yang Genyuan work " development of electric ballast ").Therefore, the fluorescent lighting fixture of electric ballast embarrasses the user to accept, and is simple in structure by the fluorescent lighting fixture that Inductive ballast and starter are formed, price is low, dependable performance and can use under abnormality and generally receive an acclaim.But owing to what supply with fluorescent tube in this light fixture is alternating voltage, starting current is the filament by lamp tube ends simultaneously, the filament at two ends all emitting electrons just can make luminous basicly stable, when one end filament is blown or loses electron emission ability, fluorescent tube just is difficult to start, even started, also the rectifying effect because of fluorescent tube makes luminous extremely unstable.As shown in Figure 7 be a kind of electric inductance type fluorescent lamp tool circuit diagram (select from " electrical apparatus technology knowledge handbook " in December, 1985 China Machine Press publish, the Zhao Weikun chief editor), the state of its lamp tube ends filament when starting and work is unbalanced, because, this imbalance and fluorescent tube self two ends burn-out life inconsistent, make an end filament before other end filament is underused, be blown or lose electron emission ability, thereby whole tubes is scrapped.

The purpose of this utility model provides a kind of simple in structure, and is cheap, starts easily, and dependable performance can stand that abnormality is used and the fluorescent lighting fixture in prolonging lamp tube useful life.

The utility model is to realize like this, it is made up of Inductive ballast, full-bridge rectifier, starter, fluorescent tube, one end of Inductive ballast is connected with an input of full-bridge rectifier, power line of another termination of Inductive ballast, another another root power line of input termination of full-bridge rectifier, the positive output utmost point of full-bridge rectifier is connected with a utmost point of starter and is connected with one or two joint of fluorescent tube one end filament, and the negative output utmost point of full-bridge rectifier and another utmost point of starter are connected with two joints of fluorescent tube other end filament respectively.

Outstanding advantage of the present utility model is the abundant preheating of filament that its starting current only passes through an end of fluorescent tube; fluorescent tube after the startup has only the filament emitting electrons of an end; the filament of the other end is protected; when fluorescent tube is used long afterwards; one end filament blow or when losing the emitting electrons ability; interchangeable fluorescent tube two ends connect continues to use, and like this, the filament at fluorescent tube two ends is fully used and has been prolonged useful life.Because supplying with the voltage of starter and fluorescent tube is the direct voltage with current waveform in full-wave rectifier, so it starts easily luminous stablizing.The utility model also has good reliability and bears the performance that abnormality is used, and simple in structure, cheap.

Further specify below in conjunction with several embodiment accompanying drawings of the present utility model.

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model embodiment 1 schematic diagram;

Fig. 3 is the utility model embodiment 2 schematic diagrames;

Fig. 4 is the utility model embodiment 3 schematic diagrames;

Fig. 5 is electrodeless starter structural representation;

Fig. 6 has utmost point starter structural representation;

Fig. 7 is a kind of electric inductance type fluorescent lamp tool circuit diagram.

As shown in Figure 1 be a kind of improvement of electric inductance type fluorescent lamp tool, it comprises spring lamp holder 1, lampshade 2, shell 3, full-bridge rectifier 4, power line 5, Inductive ballast 6, fluorescent tube 7, starter base 8, starter 9, cable hanger 10, hard lamp socket 11. Fluorescent tube 7 devices are on the spring lamp holder 1 that is positioned at two ends and hard lamp socket 11, and spring lamp holder 1 and hard lamp socket 11 are separately fixed at the two ends of lampshade 2, shell 3 in-built being equipped with by full-bridge rectifier 4, inductance The glow starter that ballast 6, starter 9 form; Wherein, full-bridge rectifier and Inductive ballast 6 in shell 3 are drawn two power lines 5, power line 5 is by the external 220V AC power of attachment plug, starter 9 is inserted on the starter base 8 that is fixed on the shell 3 and part is exposed outside the shell, and the cable hanger 10 on the two ends uses for the utility model is installed. When fluorescent tube in the utility model 7 was selected circle, H shape etc., the shape of the position of its full-bridge rectifier 4, Inductive ballast 6 and starter 9 and shell 3, lampshade 2 can need change with shape and the outward appearance of fluorescent tube 2. Circuit of the present utility model shown in Figure 1 has following examples.

Embodiment 1:

As shown in Figure 2, L is an Inductive ballast, and its rated power is identical with fluorescent tube W, D ₁-D ₄Four rectifier diodes are formed full-bridge rectifier, its the highest peak-inverse voltage 〉=1000V, specified forward rectified current is decided according to the power of fluorescent tube W, when fluorescent tube is that 40W and 40W are when following, rectifier diode can be selected 1N4007 for use, when fluorescent tube is more than the 40W during to 100W, rectifier diode can be selected 1N5408, D for use ₁-D ₄The full-bridge rectifier of forming also can select for use the bridge heap of relevant parameter to replace, the rated power of starter S and fluorescent tube W are supporting, it preferably selects two contacts for use all is that movable electrodeless starter S(is referring to Fig. 5), if selected utmost point starter S(for use referring to Fig. 6), its fixed contact utmost point A and D ₁-D ₄The positive output utmost point of the full-bridge rectifier of forming and the filament of fluorescent lamp W one end connect, moving contact utmost point B is connected with the negative output utmost point of full-bridge rectifier by the filament of the fluorescent tube W other end, use has this kind of utmost point starter S to be connected with the optimum start-up effect, otherwise, it is relatively poor that it starts effect, and the termination of Inductive ballast L is by D ₁-D ₄The input of the full-bridge rectifier of forming, another termination power line of Inductive ballast L, D ₁-D ₄Another another root power line of input termination of the full-bridge rectifier of forming, D ₁-D ₄The positive output utmost point of the full-bridge rectifier of forming is connected with the utmost point of starter S and is connected with the filament of fluorescent tube W one end, and tube filament two of this end links together D ₁-D ₄The negative output utmost point of the rectifier of forming and another utmost point of S are connected with two joints of the filament of the other end of fluorescent tube W respectively.Here, Inductive ballast L is exactly the Inductive ballast 6 among Fig. 1, D ₁-D ₄The full-bridge rectification of forming is the full-bridge rectifier 4 among Fig. 1, D ₁-D ₄The power line that the full-bridge rectifier of forming is connected with L is exactly the power line 5 among Fig. 1, and starter S is exactly the starter 9 among Fig. 1, and W is the fluorescent tube 7 among Fig. 1.

Embodiment 2:

As shown in Figure 3, it is on the basis of embodiment 1, and a utmost point that changes starter S connects D ₁-D ₄The positive output of the full-bridge rectifier of forming very this utmost point of starter S connects D ₁-D ₄The input that links to each other with power line of the full-bridge rectifier of forming, other circuit is identical with embodiment 1.The starting effect of present embodiment is slow slightly than embodiment 1.

Embodiment 3:

As shown in Figure 4, it is on the basis of embodiment 1, and a utmost point that changes starter S connects D ₁-D ₄The positive output of the full-bridge rectifier of forming very this utmost point of starter S connects D ₁-D ₄The input that links to each other with ballast of the full-bridge rectifier of forming.The starting effect of present embodiment is slow slightly than embodiment 1.

Claims

1, a kind of fluorescent lighting fixture of forming by fluorescent tube 7, Inductive ballast 6, starter 9 of lengthening the life, it is characterized in that full-bridge rectifier 4 in addition, one end of Inductive ballast is connected with an input of full-bridge rectifier 4, power line 5 is connected with the other end of Inductive ballast 6 and another input of full-bridge rectifier 4 respectively, the positive output utmost point of full-bridge rectifier 4 is connected with a utmost point of starter 9 and is connected with an end filament of fluorescent tube 7, and the negative output utmost point of full-bridge rectifier 4 is connected with two joints of fluorescent tube 7 other end filaments respectively with another utmost point of starter 9;

2, according to the described fluorescent lighting fixture of claim 1, it is characterized in that a utmost point of starter 9 connects the input that links to each other with power line 5 of full-bridge rectifier 4, another utmost point is connected with the negative output utmost point of full-bridge rectifier 4 by the filament of an end of fluorescent tube 7;

3, according to the described fluorescent lighting fixture of claim 1, it is characterized in that a utmost point of starter 9 connects the input that links to each other with Inductive ballast 6 of full-bridge rectifier 4, another utmost point is connected with the negative output utmost point of full-bridge rectifier by the filament of an end of fluorescent tube 7.