CN2036732U - Low-voltage starter for fluorescent light - Google Patents

Abstract

The utility model discloses a low-voltage starter for fluorescent lights. When the circuit of an ordinary fluorescent light is in the power supply voltage lower than 180V, the fluorescent light is difficult to be lighted up or is not lighted up at all. A starter is increased in the circuit of the ordinary fluorescent light, when the power supply voltage fluctuates at 160V more or less or more than 160V, the low-voltage starter for fluorescent lights can effectively light up the fluorescent light with bright filament and flickering only but not continuously luminous lamp tube; the low-voltage starter for fluorescent lights provides convenience for the fluorescent light lighting in regions without sufficient power feeding.

Description

Low-voltage starter for fluorescent light

The utility model relates to the electrical equipment that a kind of fluorescent lamp lighting is used.

Common daylight lamp circuit as shown in Figure 5.After switch (6) closure, the 220V supply voltage is added in the two ends of starter (8), make its inert gas dielectric breakdown produce glow discharge, after being heated, bimetal leaf changes normally off over to by normally open, starter (8) pressure drop is zero, starting current forms the loop, to the filament heating of fluorescent tube (9).After the bimetal leaf in the starter (8) cools off rapidly, return normally open by normally off again.At this in a flash, because current changing rate is very big, ballast (7) produce higher induced electromotive force be added in fluorescent tube (9) two ends this moment can the hot cathode of emitting electrons on, make the gas ionization in the pipe, mercury bead is heated vaporization and produces the mercury vapour arc discharge in the pipe thereby make, and sends ultraviolet ray.Fluorescent material on the ultraviolet ray bombardment tube wall sends visible light.But when supply voltage is lower than 180V when following, the filament heating voltage of fluorescent tube (9) is lower, and the induced electromotive force that ballast (7) is produced is also lower, thus fluorescent tube (9) light just very difficultly, even starting is not repeatedly helped matters yet.The objective of the invention is to remedy this defective.

The fluorescent lamp low-voltage starter as shown in Figure 1.During use it and starter (8) are together in series, then with fluorescent lamp and connect (see figure 6).After the switch among Fig. 1 (6) closure, because the effect of rectifying tube (2), starting circuit is mainly passed through direct current.Because the shunting action of resistance (1) and electric capacity (3), this circuit also contains certain alternating current component.The two ends that direct voltage behind over commutation is added in starter (8) make its dielectric breakdown and glow discharge, bimetal leaf is through being heated blink, change normally off over to by normally open, starter (8) pressure drop rapid drawdown is zero, starting circuit is by bigger direct current, to the filament heating of fluorescent tube (9), on the one hand ballast (7) is carried out energy storage on the one hand.This moment, bimetal leaf is just very fast cooling after losing the aura thermal source, and starter (8) automatically restores to normally open again by normally off.Because the current changing rate of circuit is very big, ballast (7) has produced very big self-induction motor, drops on the two ends of fluorescent tube (9), makes it to start aura, and AC power has been finished ignition procedures by ballast (7) and fluorescent tube (9) then.So far, starter is no longer had an effect.This shows that the present invention relies on DC start when the starting fluorescent lamp.In case proceed-to-send, the some fluorescent lamp is still by Alternating Current Power Supply.By increasing the fluorescent lamp low-voltage starter, can be about supply voltage 160V or in the above fluctuation range of 160V,, can light reliably under this voltage and do not have the only flicker of this device and the fluorescent lamp that can not light original.

In Fig. 1 circuit, resistance (1) is for starting circuit provides communication channel, and rectifying tube (2) provides employs DC power supply, in order to ballast energy storage and heat filament.Electric capacity (3) absorbing high-frequency spark is to reduce the external electromagnetic radiation of fluorescent lamp.Resistance (4) current limliting is with the protection filament.Voltage-stabiliser tube (5) avoids filament drop excessive in order to decompression.Element can select different parameters to adapt to different fluorescent lamps and starter.When the pressure relief value of voltage-stabiliser tube (5) was little, circuit can simplify the form into Fig. 2; Very big when resistance (1) resistance, resistance (4) is when resistance is minimum, and circuit can be reduced to figure (3) and figure (4) form.

The utility model can have device of one's own, also can be combined into one becoming one device with daylight base or starter.

Claims (3)

1, the low-voltage starter used of a kind of fluorescent lamp lighting is characterized in that being made up of resistance (1), rectifying tube (2), electric capacity (3), resistance (4), voltage-stabiliser tube (5).

2, device according to claim 1 is characterized in that resistance (1), resistance (4) and voltage-stabiliser tube (5) in different designing requirements, can omit.

3, device according to claim 1 is characterized in that this device can have individual devices of one's own, also can with being combined into one of starter device, perhaps with being combined into one of daylight base device.