CN2159499Y - Fluorescent light - Google Patents

Abstract

The utility model discloses a fluorescent light, comprising a bracket lighting plate and a lamp foot base box arranged at both ends of the lighting plate. A rectifying-filtering circuit and a series resonant circuit are respectively arranged in the base box. The rectifying-filtering circuit is composed of diodes D1, D2, D3 and D4, capacitors C1 and C2 and an inductive coil L. The series resonant circuit is composed of capacitor C4, C7 and C3, triodes BG1 and BG2, a pulse transformer, etc. The rectifying-filtering circuit and the series resonant circuit are respectively used for replacing the rectifier and the starter on an ordinary fluorescent lamp, especially, the two groups of circuits are respectively arranged, and the external side of the base box is provided with heat radiating holes, so the heat is uneasily to be produced to burn the circuits, the service life of the lamp is prolonged and the utility model also has the advantages of fast starting without stroboflash and noise, large lumen coefficient, etc.

Description

Fluorescent light

What the utility model was announced is a kind of fluorescent lighting fixture, specifically is the fluorescent lighting fixture that does not have ballast and starter.

The fluorescent lamp for lighting tool all has ballast, starter at present.Owing to send hum when ballast work electricity consumption and work, and cause waste electric energy and hum that people and household electrical appliance generation are disturbed.The electric ballast that also has a kind of fluorescent lighting fixture to use at present, owing to be assemblied in an original paper configuration on the wiring board closely, the heat that produces during work is difficult for distributing, thereby causes circuit burnout easily.

The purpose of this utility model provides the fluorescent lighting fixture that a kind of two ends have electronic circuit respectively.Because circuit is contained in the light fixture two ends respectively, rapid heat dissipation is difficult for burning circuit.

The utility model structure as shown in drawings;

Support has a bulb holder base box respectively according to the two ends of plate.At one end in the lamp angle seat box, the installing current rectifying and wave filtering circuit is provided with the serial resonant circuit in the other end box.Current rectifying and wave filtering circuit is by diode D1, D2, D3, D4, and capacitor C1, C2 and inductance coil constitute.The serial resonant circuit is by capacitor C4, C7, C3, and elements such as triode BG1, BG2 and pulse transformer constitute.

Operation principle of the present utility model is; DC voltage behind rectifying and wave-filtering charges to capacitor C7 by elements such as C4, C7, C3 and BG2, because the winding L 2 of pulse transformer is anti-phase with L3, L1 is identical with L3, after the BG2 conducting, the induced electromotive force of L2 makes the base potential of BG2 become negative, BG2 jumps to cut-off state by saturation conduction, and the induced electromotive force of L1 just becomes the BG1 base potential, and BG1 is a saturation conduction by ending transition.Capacitor C 7 is by the discharge of elements such as C4, BG1, L3 when the BG1 conducting, the magnet ring contract magnetic flux that utilizes, forward and reverse cycle repeats to change, thereby makes BG1, BG2 take turns conducting or end, make element generation resonance such as L and C7, C7 produces higher voltage fluorescent tube is started light.Fluorescent tube starts the back detuning of resonant circuit, and fluorescent tube is worked under rated condition.

Characteristics of the present utility model are simple installations, and are in light weight.Result of use is to start soon, no stroboscopic, and noiselessness, in the service life of prolonging lamp tube, the lumen coefficient is big, so reach the saving electric energy.

Fig. 1 is the utility model structural representation

Fig. 2 is the utility model current rectifying and wave filtering circuit and serial resonant circuit structure diagram

The utility model relates to the specialties such as metal, plastic processing and electronic circuit assembling, with reference to specification and accompanying drawing, can reproduce the utility model by the known technology of metal, plastics, electronic circuit process and assemble.

Embodiment:

Support has a bulb holder base box (2) respectively according to the two ends of plate (1), and its outside has louvre (3), installs rectifying and wave-filtering wiring board and serial resonant wiring board respectively in the seat box.The rectifying and wave-filtering circuit is connected and composed by diode D1, D2, D3, D4 and capacitor C1, C2 and inductance coil.The serial resonant circuit is made of capacitor C4, C7, C3 and triode BG1, BG2 and pulse transformer.

Its every index of the utility model after the enforcement is all above national standard.As: power is 41.0W and 40.2W, and national standard is≤44w.The lumen coefficient is 100%, 98%, and national standard is 〉=95%, and starting resistor is 120,130V, and national standard is≤198, minimum operating voltage 80V, 85V, and national standard is≤198V.Voltage pulsation when 198V～242V, the lamp operate as normal.Electrical strength does not puncture when 1500V/mm.

Claims (1)

1. A kind of fluorescent lighting fixture, by support illuminatian plate (1), lamp angle seat box (2) and circuit part constitute, it is characterized in that lamp angle seat box (2) is positioned at the two ends of support illuminatian plate, the outside of seat box has louvre (3), in the seat box current rectifying and wave filtering circuit and serial resonant circuit are set respectively, its current rectifying and wave filtering circuit is by diode D ₁, D ₂, D ₃, D ₄With capacitor C ₁, C ₂And inductance coil L formation, its serial resonant circuit is by capacitor C ₄, C ₃, C ₇With triode BG ₁, BG ₂And pulse transformer constitutes.

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