CN2454901Y

CN2454901Y - Cold-cathode electronic energy-saving lamp

Info

Publication number: CN2454901Y
Application number: CN 00263989
Authority: CN
Inventors: 宋声和; 葛世潮
Original assignee: 葛世潮
Current assignee: Hangzhou Kenai Lighting Technology Co. Ltd.
Priority date: 2000-12-08
Filing date: 2000-12-08
Publication date: 2001-10-17
Anticipated expiration: 2010-12-08

Abstract

The utility model relates to a cold-cathode electronic energy-saving lamp, which comprises at least one cold-cathode fluorescent lamp tube, a lamp cap, a light-transmitting bulb shell, a plastic outer shell, a plastic bonding piece and an electronic ballast assembly, wherein, the electronic ballast assembly is arranged in the plastic outer shell and the lamp cap; the lamp tube and the light-transmitting bulb shell are fixed on the plastic bonding piece by binding materials. Because electrolytic capacitors with large capacity are not used for filtering, after an input alternating current power supply obtains pulsating direct current via bridge rectification, the pulsating direct current is directly input a high frequency switch circuit to be transformed into high frequency alternating current and then is output to the lamp tube via boosting voltage; thus, the utility model has the characteristics of reasonable structure, simple technology, convenient production, high circuit power factor, good reliability, small filter interference, etc.

Description

The cold cathode electronic energy-saving lamp

The utility model relates to a kind of cold cathode electronic energy-saving lamp, a kind of illuminating lamp that can directly replace general lighting with osram lamp.

In the prior art, normally used electronic energy-saving lamp, it is mainly combined by a thermal cathode fluorescent tube and electric ballast.For thermal cathode fluorescent tube, in the use owing to there is the electrode loss of tungsten filament and electronic emission material at high temperature, so the useful life of fluorescent tube is shorter.Usually use the electronic energy-saving lamp of thermal cathode fluorescent tube, major part does not have dimming function; Part has the electronic energy-saving lamp of the thermal cathode fluorescent tube of dimming function, and when being in the dimming function use, its dimming scope is smaller, simultaneously, can shorten its useful life.

The cold cathode electronic energy-saving lamp that provides a kind of profile to be similar to the general lighting osram lamp and have dimming function is provided the purpose of this utility model.

The purpose of this utility model is finished by following technical solution, it comprises at least one cathode fluorescent tube, lamp holder, printing opacity cell-shell, plastic casing, plastic fastening and electronic ballast component, this electronic ballast component is positioned in plastic casing and the lamp holder, and fluorescent tube and printing opacity cell-shell are fixed on the plastic fastening with adhesives.

Described electronic ballast component includes the bridge rectifier that is constituted by a diode that connects input ac power, the output of this rectification circuit is connected on the high-frequency switch circuit of being made up of two transistors and magnetic ring coil and electric capacity, and is connected to the two poles of the earth of fluorescent tube through the booster circuit output that current-limiting inductance and high-tension transformer are formed.

Be connected to the low pressure accessory power supply of forming by diode and electric capacity by the winding on the magnetic ring coil on the described high-tension transformer, and two being terminated on the input of high-frequency switch circuit of this low pressure accessory power supply.

The utility model is also at input two ends of described high-frequency switch circuit and be connected to the ballasting circuit of being made up of resistor and transistor.

Description of drawings is as follows:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the circuit theory diagrams of electronic ballast component of the present utility model.

Below in conjunction with accompanying drawing the utility model is described in detail: shown in Figure 1, the utility model includes: cathode fluorescent tube 5, lamp holder 1, printing opacity cell-shell 6, plastic casing 3, plastic fastening 4 and electronic ballast component 2.Lamp holder is selected E26 or E27 standard lamp head for use, and lamp holder is fixedlyed connected with plastic casing 3 usefulness mechanical systems.Be connected for frame mode between plastic casing 3 and the plastic fastening 4.And it is fixedly connected between cathode fluorescent tube printing opacity cell-shell 6 and the plastic fastening 4 with high temperature resistant aging-resistant adhesives.

The shape of printing opacity cell-shell 6 described in the utility model can have multiple choices according to the form of general lighting osram lamp, as bulb-shaped, spheroidal, mushroom-shaped, candle etc.For obtaining different illuminating effects, processing such as cell-shell 6 can carry out frosted, whitewashes, milky white, decorative pattern and reflectance coating.

Electronic ballast component described in the utility model is formed by circuit board and electronic component assembling, and whole assembly is installed in plastic casing 3 and the lamp holder 1.

Shown in Figure 2, the ac

power input end

10,11 of circuit is in series with fuse 12 in the alternating current input power supplying circuit, converts Voltage pulsating direct-current supply to after the bridge rectifier rectification of AC power via

diode

14,15,16,17 compositions.The output of this Voltage pulsating direct-current supply is connected on the half-bridge high frequency power switching circuit of being made up of two

transistors

41,42 and magnetic ring coil 46,

electric capacity

48,49 and peripheral component, and it is 25 that the Voltage pulsating direct-current supply after the rectification is converted to frequency---the high-frequency ac power of 75KHZ.Export the two poles of the earth that oudin's current is connected to fluorescent tube 55 via the booster circuit that current-limiting inductance 54, high-tension transformer 53 are formed, light cathode fluorescent tube 55.Among Fig. 2, be connected to winding 29, this winding 29 and

diode

28 and 27, electric capacity 26 composition low pressure accessory power supplys on the high-tension transformer 53, two of this low pressure accessory power supply is terminated at input two ends of high-frequency switch circuit.When the pulsating dc voltage of main power source enters the low district of amplitude, provide high-frequency switch circuit to keep work by accessory power supply.

Among Fig. 2, also and be connected to

freewheeling circuit

22,23 that form by

resistor

21,24,25 and transistor, when input ac power voltage enters the low district of amplitude at input two ends of high-frequency switch circuit.When guaranteeing that cold cathode energy-saving lamp of the present utility model is used for common tunable optical light fixture, but controllable silicon light modulation device steady operation in the light fixture.Below for a kind of canonical parameter of 9W cold cathode energy-saving lamp: the bulb length overall is 120 millimeters; Bulb diameter is 60 millimeters; Bulb power is 9 watts; Luminous flux＞400 lumens.

The know-how that cold cathode electronic energy-saving lamp of the present utility model relates to is that the general personnel of this specialty are familiar with, and therefore, as long as understand the characteristic of content of the present invention and electronic ballast component, can do various forms of conversion and replacement.

The utility model is because in circuit of electronic ballast, do not use jumbo electrochemical capacitor filtering, be transformed into high-frequency ac and after boosting, export to fluorescent tube but input ac power is directly imported high-frequency switch circuit after bridge rectifier obtains the pulsating direct current electric current, make the utlity model has rational in infrastructure, technology simple, be convenient to produce, line power factor height, good reliability, characteristics such as little are disturbed in filtering.Compare with tungsten lamp with the general lighting of same illuminating effect, power consumption is saved more than 70%, and the bulb temperature rise is little, and be common with more than 10 times of osram lamp useful life.

Claims

1, a kind of cold cathode electronic energy-saving lamp, it comprises at least one cathode fluorescent tube, lamp holder, printing opacity cell-shell, plastic casing, plastic fastening and electronic ballast component, it is characterized in that electronic ballast component (2) is positioned in plastic casing (3) and the lamp holder (1), fluorescent tube (5) and printing opacity cell-shell (6) are fixed on the plastic fastening (4) with adhesives.

2, cold cathode electronic energy-saving lamp as claimed in claim 1, it is characterized in that described electronic ballast component (2) includes connects bridge rectifier input ac power, that be made up of diode (14,15,16,17), the output of this rectification circuit is connected on the high-frequency switch circuit of being made up of two transistors (41,42) and magnetic ring coil (46) and electric capacity (48,49), and is connected to the two poles of the earth of fluorescent tube (55) through the booster circuit output that current-limiting inductance (54) and high-tension transformer (53) are formed.

3, cold cathode electronic energy-saving lamp as claimed in claim 2, it is characterized in that having on the described high-tension transformer (53) winding (29) to be connected to the low pressure accessory power supply of forming by diode (27,28) and electric capacity (26), and two being terminated on the input of high-frequency switch circuit of this low pressure accessory power supply.

4,, it is characterized in that input two ends of described high-frequency switch circuit and be connected to the ballasting circuit of forming by resistor (21,24,25) and transistor (22,23) as claim 2 or 3 described cold cathode electronic energy-saving lamps.