CN2096861U

CN2096861U - Electronic ballast with watt adjustable

Info

Publication number: CN2096861U
Application number: CN 91217497
Authority: CN
Inventors: 江传桂; 钱克猷
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 1991-06-28
Filing date: 1991-06-28
Publication date: 1992-02-19

Abstract

The utility model provides an electronic ballast with watt adjustment, relating to a light illuminating apparatus. The electronic ballast with watt adjustment manufactures the current limiting element of an electronic ballast into an inductance coil which is provided with taps, and a change-over switch is used to connect any tap with a lamp tube; the adjustment of the change-over switch can achieve the change of the tap; the change of the inductance of the current limiting element can achieve the change of the watts of the electronic ballast so as to match with the lamp tube which has the corresponding watt. The utility model can be manufactured into a structure that one electronic ballast matches with one lamp tube or a plurality of lamp tubes. The electronic ballast with watt adjustment is suitable for daylight lamps and power-saving and fluorescent lamps, and has the advantages of simple structure and convenient operation. Besides, the utility model can control the brightness and the color according to needs so as to save electric energy.

Description

Electronic ballast with watt adjustable

The present invention relates to the lighting device.

Commercially available electric ballast is made up of rectification, frequency conversion parts and current limiting element at present, and its wattage is changeless, therefore can only cooperate with the fluorescent tube of corresponding wattage, obtain a kind of fluorescent lamp of fixedly wattage, the user can not arbitrarily change the fluorescent tube wattage, makes troubles to use.

Purpose of the present invention aims to provide the adjustable electric ballast of a kind of wattage, and it can cooperate with the fluorescent tube of any wattage, to be user-friendly to.

The present invention seeks to realize as follows: the current limiting element in the electric ballast is made the inductance coil with tap, and its tap is touched mutually with diverter switch, is connected with tube filament by arbitrary tap of this switch with current limiting element.Like this, regulate diverter switch, i.e. the interchangeable tap of touching mutually, thus can change the inductance value of current limiting element, the wattage of electric ballast is changed, so that cooperate with the fluorescent tube of corresponding wattage.

The present invention is by different switchtypes, can be made into the structure of electric ballast and a fluorescent tube adapted or while and many fluorescent tubes adapted.

Below in conjunction with accompanying drawing the present invention is constituted and to describe in further detail.

Fig. 1 is electric ballast principle of the present invention and a kind of specific embodiment.

Fig. 2 is the another kind of instantiation of electric ballast of the present invention.

Fig. 3 is that diverter switch directly is contained in the appearance cross-sectional schematic on the electronic ballast.

Fig. 4 is a kind of example of diverter switch and electric ballast packing.

With reference to Fig. 1,1 is rectification in the electric ballast among the figure, the frequency conversion parts, 2 is current limiting element, 3 is diverter switch, 4 is fluorescent tube, its current limiting element is the inductance coil with a plurality of taps, this inductance coil is connected with fluorescent tube by diverter switch, here the diverter switch of Cai Yonging is many grades of change over switches of commercially available hilted broadsword, its armature contact touches mutually with arbitrary tap of current-limiting inductance coil, change over switch then, get final product changeover contact, thereby can change the inductance value of current limiting element, the electric ballast wattage output is changed thereupon, be convenient to cooperate with the fluorescent tube of corresponding wattage, current limiting element has 4 taps in instantiation shown in Figure 1, then the convertible 4 kinds of wattages of electric ballast.This is the structure of electric ballast and any wattage one fluorescent tube adapted, and what Fig. 2 provided is the structure of electric ballast and two kinds of wattage fluorescent tube adapteds.

With reference to Fig. 2, its rectification, frequency conversion parts 1 are with among Fig. 1 shown in 1, current limiting element contains a tap, here the diverter switch of Cai Yonging is a double-throw switch, utilize switch with the termination of current limiting element and tap respectively with two fluorescent tubes 4,4 ' link to each other, when tap is communicated with fluorescent tube, then termination and another fluorescent tube are obstructed, otherwise, when the termination is communicated with fluorescent tube, then the fluorescent tube that is connected with tap is obstructed, because the inductance value of the current limiting element in the corresponding electric ballasts of two fluorescent tubes is different, so the wattage difference of two kinds of fluorescent tubes is applicable to control lamplight brightness or control light coloring.

The above-mentioned diverter switch that adopts can directly be installed on the electric ballast, promptly attach together and be integral with rectification, frequency conversion parts, current limiting element, as shown in Figure 3, as long as switch is turned round 3 ' be exposed to outside the ballast, perhaps also diverter switch and electric ballast can be distributed into disome, see example shown in Figure 4, diverter switch adopts relay J, its rectification, frequency conversion parts 1 same Fig. 1, and the termination of current limiting element and tap respectively through relay normally closed interlock J-1 and normally open contact J-2 again with fluorescent tube 4,4 ' connect, during work, when the power turn-on K switch ₁, the fluorescent tube 4 that then links to each other with normally closed interlock is bright, and when closing relay control switch K ₃, the fluorescent tube 4 ' energized that then links to each other with normally open contact, fluorescent tube 4 open circuit thisly is distributed into the structure of disome with diverter switch and electric ballast, is convenient to the fluorescent tube of two kinds of wattages of far distance controlled.

The electric ballast that wattage of the present invention is adjustable, simple in structure, easy to use, be applicable to fluorescent lamp, power saving fluorescent lamp, can not only be user-friendly to, can also control lamplight brightness, color, saving electric energy as required.

Claims

1, the adjustable electric ballast of a kind of wattage contains rectification, frequency conversion parts [1], and current limiting element [2] is characterized in that current limiting element is the inductance coil with tap, is linked to each other with fluorescent tube by arbitrary tap of diverter switch [3] with current limiting element.

2, by the described electric ballast of claim 1, it is characterized in that said diverter switch is many grades of change over switches of hilted broadsword or double-throw switch or relay.

3, by the described electric ballast of claim 1, it is characterized in that diverter switch (3) and rectification, frequency conversion parts (1), current limiting element (2) attaches together and is integral, or with rectification, frequency conversion parts (1), current limiting element (2) is distributed into the structure of disome.