CN86208457U - Longlife fluorescent lamp with accessaries - Google Patents

Abstract

The utility model relates to a long life fluorescent lamp with an adaptor, and belongs to the fluorescent lamp illuminator. The utility model is composed of a power switch K, a ballast [2], a fluorescent lamp tube [1], a glow starter [3], an adapter [4] and the fixed parts. The adapter [4] comprises the resistances [5] and [6] and a capacitor [7]. The adapter [4] forms a two-terminal device after sealed by the insulating material. The utility model improves the work mechanism of the present fluorescent lamp, causes the florescent lamp to easily start, and obviously improves the service lives of the fluorescent lamp tube [1] and the glow starter [3].

Description

Longlife fluorescent lamp with accessaries

The utility model relates to a kind of illuminating lamp, specifically, is a kind of long life fluorescent lamp that contains adapter.

People use the fluorescent lighting history of existing decades, and the also early existing series of products of fluorescent tube, ballast and glow starter that constitute fluorescent lighting device are sold.For example fluorescent tube constitutes series specification with length (or wattage) standard, and ballast and glow starter are then suitable with fluorescent tube wattage series.Like this, although fluorescent tube is straight tube shape, ring-type or H type, the illumination occasion general all adopts the place in circuit with a kind of form, and promptly mains switch, ballast, fluorescent tube filament and glow starter constitute series loop.Because product seriation, circuit structure format, so, feel very convenient installing, more because the soft and high efficiency of fluorescent illumination brightness, people are happy to use fluorescent lighting, and important disadvantages is the fragile of the repeatedly take-off of the short life of glow starter, a power-on and fluorescent tube.

The purpose of this utility model provides a kind of fluorescent lamp that adopts the fluorescent lamp adapter, enables obviously to improve the starting characteristic of fluorescent lamp, the useful life that reaches easy startup and obviously improve glow starter and fluorescent tube.

Analyze a point process of fluorescent lamp, just can understand foundation of the present utility model.

Fig. 1 is existing common adopted fluorescent lamp basic model place in circuit, glow starter plays a part timing switch in the circuit, and ballast is being undertaken the high electric field pulse that produce to start fluorescent lamp, starting current is being provided and plays current limliting after the fluorescent lamp starting point.In the zero-time of mains switch closure, the whole voltages of civil power are added on the glow starter, make its build-up of luminance, produce heat, the negative electrode heating circuit of fluorescent tube has been connected in the contact of just expanding of a pair of bimetallic contact of its inside, and tube cathode adds thermal electron.Contact contact back stops owing to glow starter glow discharge, its bimetallic contact disconnects fluorescent tube negative electrode heating circuit because of cooling off gradually, shrinking, because of ballast is perception, changing road moment just produces on the two end electrodes that high-voltage pulse more than 800 volts and civil power be superimposed on fluorescent tube, and fluorescent lamp starting is lighted.From Fig. 1 as seen, high electric field pulse also is added on the two ends of glow starter simultaneously, this makes under the situation of the pipeline start up by preheating electric current that flows through bigger numerical, the starter contact is during by the closure state tripping, its contact surface is easily damaged by galvanic corrosion, and therefore, glow starter is after work repeatedly, two contact easily is welding in together, the reason place of glow starter short life that Here it is.After the contact short circuit of glow starter, will form the long-term connection of tube filament heating circuit after mains switch is opened, cause the crossing heating of negative electrode and turn black, the disintegration of filament and damaging.Thereby, can use a kind of circuit devcie with capacitive, it is connected in series the back with glow starter in parallel with the negative electrode of lamp tube ends, connection as shown in Figure 3.Fig. 3 is the utility model Long service lamp structure chart, and wherein parts (4) are the fluorescent lamp adapters, and its structure as shown in Figure 2.Be that the utility model is made up of mains switch K, ballast (2), pre-heated fluorescent tube (1), glow starter (3), adapter (4) and fixed part thereof.It with the difference of commonly used fluorescent lamp as shown in Figure 1 be glow starter (3) be not directly with the filament at fluorescent tube (1) two ends And connection Xiang, but join with the Deng Si And at fluorescent tube (1) two ends again after being connected in series by glow starter (3) and adapter (4).In Fig. 2, the utility model adapter (4) is packaged into two-terminal device by resistance (5) and (6) and capacitor (7) formation by megohmite insulant, perhaps is fitted together with a little circuit board, perhaps directly is contained on the insulating base of light fixture.(7 〕 And connection back is connected in series with resistance (6), and resistance (5) is safe discharge resistance, is generally about 1M Ω, after mains switch K disconnects, for capacitor (7) provides discharge loop for resistance (5) and capacitor.Resistance (6) is current-limiting resistance, it is the same with capacitor (7), takes different numerical value along with the difference of used fluorescent lamp wattage, usually, resistance (6) is 10 Ω～100 Ω, and capacitor (7) is 1.4 μ F/400V～5 μ F/400V.The capacitive reactance of fluorescent lamp adapter (4) should be taken the twice of the induction reactance that is not less than used ballast (2).

The utility model has the advantages that: 1. because in fluorescent lamp starting process, the starting point high-voltage pulse is not added on the glow starter (3), makes glow starter (3) not fragile, prolongs its useful life; 2. easily start, when civil power drops to 180 volts, even 160 volts the time, as long as glow starter can move by build-up of luminance, fluorescent tube (1) is started light,, the repeatedly take-off of glow starter (3) can not occur in ordinary circumstance, particularly can not cause the overcurrent preheating of fluorescent tube (1) negative electrode owing to the damage of starter (3), these all make significantly improve the useful life of fluorescent tube (1); 3. significantly reduce the maintenance work of fluorescent lamp, because the long-life of fluorescent tube (1) and starter (3), needn't often change them, to point out a bit especially, even two contacts of glow starter (3) are welded together when jumping not open, fluorescent tube filament can not be blown ， And yet and still can continue and use, illumination.

Fig. 1 is existing fluorescent lamp place in circuit.

Fig. 2 is the circuit diagram of fluorescent lamp adapter of the present utility model (4).

Fig. 3 is the utility model fluorescent lamp structure figure.

Provide embodiment of the present utility model below, its details further is provided.

Embodiment 1, the utility model are used for 7 watts and 9 watts of H type fluorescent lamps, and among Fig. 2, resistance (5) is got 910K Ω, and capacitor (7) is got 1.5 μ F/400V, and polypropylene metal film capacitor, resistance (6) are got 56 Ω.Ballast among Fig. 3 (2), fluorescent tube (1), glow starter (3), mains switch K all adopt existing series of products element.The connection of circuit is as follows: an end filament of mains switch K, ballast (2), fluorescent tube (1), the other end filament of glow starter (3), adapter (4), fluorescent tube (1) connects successively, constitutes the loop through the civil power feeder line.After mains switch K opens, under the supply voltage effect, glow starter (3) build-up of luminance, two bimetallic contacts on it are subjected to the aura heat and the closure that expands, the filament that constitutes fluorescent tube (1) adds thermoelectric loop, be the filament heating current by behind mains switch K, the flow through filament of ballast (2), fluorescent tube (1) one end of power supply, get back to power supply behind the filament of glow starter (3), adapter (4), fluorescent tube (1) other end.Because adapter (4) be capacitive reactances, its value is the twice that is not less than ballast (2) induction reactance, thus filament heating current tool capacitive, its value less than or approach prior art filament heating current (i.e. filament loop heating current as shown in Figure 1).Simultaneously, because fluorescent lighting fixture of the present utility model, induction reactance and the capacitive reactance of the resistance sum of the resistance of the resistance of filament, ballast (2) and resistance (6) on the loop, so the two ends in adapter (4) are when filament flows through preheat curent, a high pressure that approaches the line voltage twice appears, it almost completely is added in the two ends of fluorescent tube (1), and this just makes fluorescent tube (1) under preheat curent and high-tension effect simultaneously, and fluorescent tube (1) is very fast to be lighted.After fluorescent tube (1) is lighted, when the contact of glow starter (3) disconnects because of closure loses the aura heating, avoided under high pressure working, light because of fluorescent tube (1) simultaneously, its both end voltage reduces, make aura starter (3) build-up of luminance and reset into original normally open again, thereby adapter (4) is cut off also, light, electrical quantity when not influencing the normal operating conditions of the lighting loop that ballast (2), fluorescent tube (1) and mains switch K constituted.

When embodiment 2, the utility model are used for the fluorescent lamp of 20 watts of straight tubes and 20 watts of ring pipes, adapter among Fig. 2 (4), resistance on it (6) is got 30 Ω, capacitor (7) is got 2.5 μ F/400V, resistance (5) is got 1M Ω, insert in the utility model fluorescent lamp place in circuit as Fig. 3, can reach the desired effect of the utility model, promptly easily start and improve the useful life of glow starter (3) and fluorescent tube (1).Ballast (2) and glow starter (3) are still taken prior art series of products element.

When embodiment 3, fluorescent lamp structure Fig. 3 of the present utility model are used for 30 watts or 40 watts of straight tube fluorescent lamps (1), the resistance (6) of adapter (4) is got 30 Ω, capacitor (7) is taken 3 μ F/400V, resistance (5) is got 1.2M Ω, and the ballast in the circuit (2), glow starter (3) are still taken existing series of products element.

Claims (2)

1, a kind of long life fluorescent lamp comprises mains switch K, ballast [2], fluorescent tube [1], glow starter [3] and fixed part thereof, it is characterized in that a fluorescent lamp adapter [4] in addition, glow starter [3] is connected the back cross-over connection between the two ends filament of fluorescent tube [1] with adapter [4], the other end filament that mains switch K, ballast [2], an end filament of fluorescent tube [1], aura open device [3], adapter [4] and fluorescent tube [1] is connected in series in turn;

A) said adapter [4] comprises capacitor [1], current-limiting resistance [2], safe discharge resistance [3] and support, constitutes two-terminal device, capacitor [1] and resistance [connect with resistance [2] in 3] And connection back,

B) said capacitor [1] is the capacitor of 1.4～5 μ F/400V specifications,

C) numerical value of said current-limiting resistance [2] is 10～1000 Ω,

D) numerical value of said safe discharge resistance [3] is about 1M Ω.

2, it is characterized in that according to the described fluorescent lamp of claim 1 capacitive reactance of said adapter (4) is not less than the twice of the induction reactance of ballast (2).

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