CN2289371Y - Switch for fluorescent lamp - Google Patents

Abstract

The utility model relates to a switch for a fluorescent lamp. The utility model is composed of a switch box, a power supply switch, a brightness converting switch, an indicating lamp, a printed board, a circuit element, etc. On the basis of a common switch, the brightness converting switch and a corresponding control circuit are additionally arranged, which forms the switch for a fluorescent lamp. The switch for a fluorescent lamp can lead the brightness of a fluorescent lamp to be converted. A traditional single-function switch used on a fluorescent lamp is replaced. The utility model can satisfy the requirements of users according to different occasions. The same fluorescent lamp can be used for selecting different brightness, suitable light is adjusted for a room, and electricity is saved.

Description

Fluorescent switch

The utility model is a kind of electric product that is used to control conventional fluorescent.

Since fluorescent lamp arranged, people are used for opening or closing the switch of fluorescent lamp, it all is a kind of switch of simple function, promptly just play the effect of a kind of energized or powered-down, as pulling switch, flush type switches etc., on structure, they all are to utilize colliding or separating the purpose that reaches Push And Release of two mechanical contacts.

The purpose of this utility model is the unicity that changes this switching function, propose a kind of not only can the switch fluorescent lamp, but also brightness that can the conversion fluorescence lamp makes things convenient for the user to select the energy-saving fluorescent lamp switch of the illuminance of lamp according to the needs of different occasions, environment.

The utility model is to realize by following structure: it is by switch enclosure 1, box fixing threaded hole 2, indicator light 3, mains switch 4, brightness transition switch 5, switch hold-down screw 6, ｀ printed board 7, printed board hold-down screw 8, switch wiring 9,10, electric capacity 11, rectifier 12, controllable silicon 13, triode 14, resistance 15,16,19, institutes such as electric capacity 17 and piezo-resistance 18 form.After electric capacity 11 and piezo-resistance 18 parallel connections, the one end links with an input of rectifier, an end of mains switch 4, and its other end links with another input and the switch wiring 9 of rectifier, and the other end of mains switch 4 and switch wiring 10 link.The cathode output end of rectifier links with silicon controlled anode, an end of electricity group 15, an end of resistance 16, the positive pole of indicator light 3, and the cathode output end of rectifier links with the emitter of silicon controlled negative electrode, triode, the negative pole of electric capacity 17, an end of brightness transition switch 5, an end of resistance 19.The silicon controlled gate pole links with the collector electrode of triode, the other end of resistance 15, the base stage of triode links with the other end of resistance 16, the positive pole of electric capacity 17, the other end of brightness transition switch, the other end of the negative pole of indicator light 3 and resistance 19 links, and constitutes a fluorescent switch circuit with this.Fluorescent switch is passed through switch wiring 9,10 insert in the circuit for fluorescent lamp, when energized switch 4, alternating current 220V passes through fluorescent lamp ballast, filament, starter and mains switch are added to the input of rectifier, through rectifier rectification, the output ripple direct voltage is added on triode and the controllable silicon, the moment that is powering up, because the both end voltage of the base capacity 17 of triode can not be suddenlyd change, thereby to make the transistor base bias voltage be zero, triode ends, and its collector electrode is exported a high level, triggers the controllable silicon conducting, form DC loop, direct current is exported by rectifier anode, through the controllable silicon anode, negative electrode flows into the negative pole of rectifier, simultaneously in fluorescent lamp circuit, alternating current passes through fluorescent lamp ballast, filament, starter, the rectifier mains switch, flow back into power supply at last, form ac circuit, make the filament heating, the starter take-off is with lamp tube starting.Through after the several seconds, the base capacity 17 of triode has arrived certain current potential by resistance 16 chargings, make the triode conducting, its collector electrode saltus step is an electronegative potential, makes the very fast shutoff of controllable silicon, the output DC loop of rectifier is blocked, form open circuit, at this moment rectifier is equivalent to a noncontacting switch that is disconnected, and the interchange of fluorescent lamp can't be passed through from rectifier, therefore change by from electric capacity 11, flowing through, fluorescent lamp is worked on.Because the metering function of electric capacity 11 reduces the loop current of fluorescent lamp, flows through lamp tube current and also diminishes, the light deepening.When brightness transition switch 5 by just now off-state plate during to on-state, the base stage of triode is by short circuit, triode ends, its collector electrode saltus step is a high potential, the controllable silicon conducting that is triggered forms DC loop, starts rectifier work, this noncontacting switch of rectifier is connected, electric capacity 11 is by short circuit, and the loop current of fluorescent lamp transfers to by passing through the loop current increase in the rectifier, light brightens, and at this moment fluorescent lamp promptly is in normal luminance.And when brightness transition switch 5 plates were got back to off-state, the base capacity 17 of triode began charging again, and the subsequent process that repeats the front again is up to making the light deepening.So, as long as change the operating state of brightness transition switch 5, just can change the luminosity of fluorescent lamp easily.

Fluorescent switch is compared with former regular tap, have the following advantages: 1. increased dimming function, can obtain significant energy-saving efficiency, 2. realize adjusting brightness of fluorescent lamp with the series capacitance method, self consumed power not only, and can improve power factor, and 3. make things convenient for the needs of users according to different occasions, can utilize same small cup fluorescent lamp to select different illuminances.

The related accompanying drawing of the utility model has: Fig. 1. fluorescent switch panel figure; Fig. 2. the fluorescent switch structure chart; Fig. 3. the fluorescent lamp electrical schematic diagram of band fluorescent switch.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1. and Fig. 2. the structural representation of fluorescent switch provided, switch enclosure 1 adopts fire proofing to form, be respectively equipped with box fixing threaded hole 2 above it, the button hole of mains switch 4 and brightness transition switch 5, the loophole of indicator light 3, switch wiring fairlead, the inboard of box is marked with respectively and is used for installing and fixing mains switch, the post of brightness transition switch and printed board is fixed in the box respectively by hold-down screw 6 and screw 8.

Fig. 3. having provided the fluorescent lamp electrical schematic diagram that has fluorescent switch, is the fluorescent switch winding diagram in the frame of broken lines wherein, by switch wiring 9 and 10 and fluorescent lamp circuit link.The conversion of brightness of fluorescent lamp is to change jobs by the wheel that is connected on rectifier 12 in the fluorescent lamp loop and electric capacity 11 to realize.The rectifier 12 here is equivalent to a noncontacting switch in this circuit.When its conducting, its internal resistance is very little, and the electric capacity 11 that is in parallel with it is promptly by short circuit, and the ac circuit electric current of fluorescent lamp just passes through from rectifier, makes fluorescent lamp be in normal luminance.When rectifier was opened a way, its internal resistance was very big, and the ac circuit electric current of fluorescent lamp then changes by passing through in the electric capacity 11.Because the metering function of electric capacity 11 reduces loop current, at this moment the brightness of fluorescent lamp is with regard to deepening.According to the fluorescent lamp of different wattages, select the electric capacity 11 of different capabilities, the various different luminosity in the time of just can making this fluorescent lamp be transformed into the deepening state.For example, if the fluorescent lamp of a 40W is when selecting for use capacitance to be 2 microfarads, when being transformed into the deepening state so, its luminous flux is about 1200 lumens, than normal 2200 lumens when luminous reduce near half, its power consumption then is reduced to 24W by 49W just often, and 25W can economize on electricity.Though luminous flux has reduced half, because the luminous efficiency of fluorescent lamp is 4-5 times of incandescent lamp, so at this moment the illuminance of 40W fluorescent lamp still is equivalent to the above incandescent lamp bulb of a 60W, its effect is conspicuous.Continue to describe the transfer process of this noncontacting switch of rectifier below, the conducting of rectifier and open circuit are controlled by silicon controlled, and the silicon controlled conducting with turn-off the operating state be subjected to triode and be connected on the brightness transition switch in its base circuit and control, when the brightness transition switchboard arrives on-state, transistor base is by short circuit, base capacity 17 is by the discharge of brightness transition switch, the base potential vanishing, triode is ended, and its collector electrode is exported a high level, triggers the controllable silicon conducting, provide the direct current output loop to rectifier, start rectifier conducting work, the fluorescent lamp loop current makes fluorescent lamp normally luminous by rectifier.When brightness transition switchboard during to open position, direct current begins base capacity 17 chargings by resistance 16, to the voltage charging at base capacity 17 two ends during to about 0.6V, triode begins conducting, and its collector electrode is output as low level, and controllable silicon is automatically shut down, the output loop of rectifier is cut off, at this moment rectifier no-output and form open circuit has only minimum electric current by indicator light 3 and resistance 19, and indicator light is lighted.Because the internal resistance of rectifier at this moment is very big, the fluorescent lamp loop current can't therefrom be passed through, so change by passing through in the electric capacity 11, because the metering function of electric capacity 11 reduces lamp current, the light deepening.Hence one can see that, as long as change the operating state of brightness transition switch, just can realize the brilliance control to fluorescent lamp easily.

The effect of electric capacity 17 mainly is when fluorescent lamp is just opened in the circuit, no matter which kind of state the brightness transition switch is in, can both guarantee controllable silicon in the initial condition conducting, thereby makes the circulation of fluorescent lamp loop current, and the smooth take-off of fluorescent lamp is lighted.Its charge constant determines for guaranteeing fluorescent lamp there is sufficient start-up time by the product of resistance 16 and electric capacity 17, and time constant should be got big slightly, and that promptly should satisfy triode ended time of delay greater than 10 seconds.The effect of piezo-resistance 18 is that protection electric capacity 11 and controllable silicon are not punctured by the induced electromotive force that ballast produced, and its pressure sensitive voltage is generally got 400V between the 500V.Electric capacity 11 should be selected the withstand voltage metallized polyester membrane capacitance of 400V that is for use, and the diode that controllable silicon and rectifier are used requires the withstand voltage 600V of being not less than, and average current is not less than 1A.Indicator light can be with general light-emitting diode, and triode selects for use multiplication factor higher, the switching tube of conduction voltage drop＜0.3V.Selecting for use of other components and parts should be determined according to the requirement of circuit parameter, is advisable to guarantee that circuit is worked reliably and with long-term.

Claims (2)

1. fluorescent switch, it is characterized in that it is by switch enclosure (1), box fixing threaded hole (2), indicator light (3), mains switch (4), brightness transition switch (5), switch hold-down screw (6), printed board (7), printed board hold-down screw (8), switch wiring (9), switch wiring (10), capacitor (11), rectifier (12), controllable silicon (13), triode (14), resistance (15), resistance (16), electric capacity (17), resistance (19), and piezo-resistance (18) is formed, after electric capacity (11) and piezo-resistance (18) parallel connection, one input of one end and rectifier, one end of mains switch (4) links together, its other end links with another input and the switch wiring (9) of rectifier, the other end of mains switch (4) and switch wiring (10) link, the cathode output end of rectifier and silicon controlled anode, one end of resistance (15), one end of resistance (16), the positive pole of indicator light (3) links together, the cathode output end of rectifier and silicon controlled negative electrode, the emitter of triode, the negative pole of electric capacity (17), one end of brightness transition switch (5), one end of resistance (19) links together, the collector electrode of silicon controlled gate pole and triode, the other end of resistance (15) links together, the other end of the base stage of triode and resistance (16), the positive pole of electric capacity (17), the other end of brightness transition switch (5) links together, the other end of the negative pole of indicator light (3) and resistance (19) links, and is linked in the switching circuit of fluorescent lamp by switch wiring (9) and switch wiring (10) at last.

2. according to the described fluorescent switch of claim 1., its feature also is, above-mentioned switch enclosure (1) is to form with fire proofing, be provided with the button hole of mains switch and brightness transition switch above it, the loophole of indicator light, switch wiring fairlead, the inboard of switch enclosure, be marked with the post that is used for installing and fixing mains switch, brightness transition switch and printed board respectively, respectively they be fixed in the switch enclosure by switch hold-down screw (6) and printed board hold-down screw (8).

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