CN2421798Y

CN2421798Y - Brightness regulator for fluorescent lamp

Info

Publication number: CN2421798Y
Application number: CN 00214135
Authority: CN
Inventors: 张波
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-04
Filing date: 2000-04-04
Publication date: 2001-02-28
Anticipated expiration: 2010-04-04

Abstract

The utility model relates to a brightness regulator for a fluorescent lamp in order to realize the brightness regulation of the fluorescent lamp and make the fluorescent lamp save energy and use conveniently. The brightness regulator is characterized in that a variable inductor L1 is connected in series with one end of an inner inductor L of an electronic ballast and is composed of a coil and a magnetic rod; a screw rod is driven by a direct current motor to make a screw nut which is fixed on a framework of the coil move along the screw rod and the coil move along the magnetic rod; the two terminals of the direct current motor are connected in series with two output terminals in an electronic reversing switch circuit. The utility model can be used for regulating the brightness of the fluorescent lamp.

Description

A kind of brightness of fluorescent lamp adjuster

The utility model relates to a kind of brightness of fluorescent lamp and transfers device.

Fluorescent lamp is the main illuminations in people's daily life, it has advantages such as the high long service life of luminous efficiency, along with science and technology development, electric ballast had appearred in recent years, just the luminous efficiency of fluorescent lamp and life-span have obtained further raising, but electric ballast can not be regulated brightness according to people's requirement, does not satisfy the demand of people to the different brightness of fluorescent lamp.

The purpose of this utility model is to provide a kind of brightness of fluorescent lamp adjuster, realizes the brightness regulation of fluorescent lamp, makes fluorescent lamp more energy-conservation simultaneously, uses more convenient.

The utility model is achieved in that a kind of brightness of fluorescent lamp adjuster, and it comprises infrared transmitter, infrared remote receiver, preamplifier, frequency-selector, electronic commutation switch, electric ballast is at variable inductance L of end serial connection of the internal inductance L of electric ballast ₁, variable inductance L ₁Be made up of coil and bar magnet, the direct current machine drive screw makes the nut that is fixed on the coil rack move along screw rod, and coil is moved along bar magnet, and the two-terminal of direct current machine is concatenated on two lead-out terminals in the electronic commutation switching circuit.

Principle of the present utility model is: in the LC oscillating circuit, and the all-in resistance R=L of oscillation circuit when resonance * (rc) ^-1And be pure resistance, r is the D.C. resistance of L, and R is directly proportional with L, and L increases then R and increases, and L reduces then that R reduces.The electric ballast of fluorescent lamp is exactly a LC oscillating circuit, the variable inductance so electric ballast internal inductance end is connected, and the variation of variable inductance will change the brightness of fluorescent lamp.

The utility model has the advantages that: can use a teleswitch and realize the brightness of fluorescent lamp is regulated, make fluorescent lamp more energy-conservation, use more convenient.

Fig. 1 is variable inductance L ₁Connection diagram.

Fig. 2 is variable inductance L ₁Structural representation.

Fig. 3 is the infrared transmitter line map.

Fig. 4 is the line map of infrared receiving unit.

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

W is an electric ballast among Fig. 1, E ₁, F ₁Be the 220V ac power input end of electric ballast W, variable inductance L ₁A terminal A directly seal in the internal inductance end Q of electric ballast W ₁, the other end Q of electric ballast W ₂Join variable inductance L with the glower end of fluorescent lamp H ₁Another terminal B be connected with another root glower end of fluorescent lamp H, an other end of two filaments of fluorescent lamp H is connected with the two ends of electric capacity respectively.Bar magnet 1 is fixed on the bar magnet frame among Fig. 2, on the coil 3 cover bar magnets 1, and can slide along bar magnet 1, is fixed with nut 4 on the skeleton of coil 3, and nut 4 is spun on the screw rod 2 that is driven by direct current machine 5.Fig. 3 is the infrared transmitter circuit, comprises integrated circuit (IC) ₃, resistance R t ₁₁, Rt ₂₂, R ₁₅, R ₁₆, capacitor C, C ₁₁, button AN ₁₁, AN ₂₁AN ₁₂, AN ₂₂, infrarede emitting diode D ₇And power supply E, IC ₃Can select NE555 for use, by the multi-resonant oscillating circuit that NE555 etc. constitutes, frequency of oscillation is f ₁=1.4 * [(R ₁₅+ 2R _T11) * C] ^-1, f ₂=1.4 * [(R ₁₅+ 2R _T22) * C] ^-1The rotating and the switch of the signal controlling direct current machine 5 of these two kinds of frequencies.Fig. 4 is the circuit of infrared receiving unit, and it comprises infrared reception, preposition amplification, frequency-selecting, electronic commutation switch, dimmer power five parts, D ₁Be infrared quick diode, it receives the control signal of two kinds of frequencies of reflector emission, and the photoelectric current that is produced is through BG ₁, BG ₂Two-stage is amplified, and converts voltage output to, and the control signal of amplifying through two-stage exports IC to ₁And IC ₂, IC ₁And IC ₂Be tone decoder LM567 or NE567, wherein IC ₁Centre frequency f ₀₁≈ (R _T1* C _T1) ^-1, IC ₂Centre frequency f ₀₂≈ (R _T2* C _T2) ^-1, when input signal is f ₁The time, and f ₁=f ₀₁, this moment IC ₁Output low level is when input signal is f ₂The time, and f ₂=f ₀₂, this moment IC ₂Output low level is by IC ₁And IC ₂Output control electronic commutation switch, the electronic commutation switch is by BG ₃, BG ₄, BG ₅And BG ₆Deng composition, when no control signal is imported, IC ₁And IC ₂The output high level, BG ₃And BG ₅Saturation conduction, BG ₁And BG ₆End, and the current potential at direct current machine 5 two ends equates that direct current machine 5 does not change, when input signal is f ₁The time, IC ₁Output low level, corresponding electronic commutation switch BG ₃By BG ₁Conducting, direct current machine 5 is just changeing, variable inductance L ₁Increase, when input signal is f ₂The time, IC ₂Output low level, BG ₅By BG ₆Conducting.Direct current machine 5 counter-rotatings, variable inductance L ₁Reduce, its rotation direction is by control signal f ₁And f ₂Control.Limit switch QLS ₁And QLS ₂Be used to prevent that direct current machine 5 from rotating makes coil 3 position that oversteps the extreme limit.The switch of fluorescent lamp H is by direct current machine 5 controls, as control signal f ₁The K switch that direct current machine 5 is rotated on the switching circuit F line of electric ballast W in limited time disconnects, and fluorescent lamp H closes, control signal f ₂Direct current machine 5 rotations are left in limited time, the K switch closure on the F line, fluorescent lamp H opens.C among Fig. 4, D terminal are the 220V power inputs of brightness of fluorescent lamp adjuster, and E, F terminal are 220V power supply and the switching circuits of electric ballast W, and E, F two-terminal are received the power input E of electric ballast W ₁, F ₁On.The two-terminal M of direct current machine 5 ₁₂, M ₂₂Respectively with Fig. 4 in two lead-out terminal M in the electronic commutation switching circuit ₁₁, M ₂₁Be connected.

Claims

1. brightness of fluorescent lamp adjuster, it comprises infrared transmitter, infrared remote receiver, preamplifier, frequency-selector, the electronic commutation switch, electric ballast is characterized in that: at variable inductance L of end serial connection of the internal inductance L of electric ballast ₁, variable inductance L ₁Be made up of coil and bar magnet, the direct current machine drive screw makes the nut that is fixed on the coil rack move along screw rod, and coil is moved along bar magnet, and the two-terminal of direct current machine is concatenated on two lead-out terminals in the electronic commutation switching circuit.