CN2408645Y

CN2408645Y - High efficiency energy saving ballast for road sodium lamp

Info

Publication number: CN2408645Y
Application number: CN 00227067
Authority: CN
Inventors: 梁启鹏
Original assignee: TUOWEI INTERNATIONAL LIGHTING CO Ltd SHUNDE CITY
Current assignee: TUOWEI INTERNATIONAL LIGHTING CO Ltd SHUNDE CITY
Priority date: 2000-01-11
Filing date: 2000-01-11
Publication date: 2000-11-29
Anticipated expiration: 2010-01-11

Abstract

The utility model relates to a high efficiency energy saving ballast for road sodium lamps, which comprises a face cover, a shell, a wire connecting terminal and a power supply circuit. The utility model is characterized in that the high efficiency energy saving ballast for road sodium lamps also comprises an active power factor correction circuit, a half-bridge type inverter circuit, and a protection and time-delay heat restart circuit. The output end of the power supply circuit is mutually connected with the input end of the active power factor correction circuit; the output end of the active power factor correction circuit is mutually connected with the input end of half-bridge type inverter circuit; the protection and time-delay heat restart circuit is respectively connected with the active power factor correction circuit and the half-bridge type inverter circuit. The utility model has the advantages of high efficiency, energy saving, convenient operation and strong circuit applicability.

Description

The energy-efficient ballast of road sodium vapor lamp

The utility model relates to a kind of ballast, the energy-efficient ballast of particularly a kind of road sodium vapor lamp.

Traditional inductance type ballast power factor (PF) is lower, relatively power consumption, and need additional starter just can make the sodium vapor lamp operate as normal, and be subjected to the line voltage distribution influence of fluctuations easily.

It is a kind of energy-efficient, easy to use that the purpose of this utility model is to provide, the energy-efficient ballast of road sodium vapor lamp that grid adaptability is strong.

The purpose of this utility model can reach by following measure: the utility model comprises cover, housing, binding post, power circuit; it is characterized in that: also comprise APFC, half bridge inverter circuit, protection and time-delay warm restart circuit; the output of power circuit links to each other with the input of APFC; the output of APFC links to each other with the input of half bridge inverter circuit, and protection and time-delay warm restart circuit link to each other with APFC and half bridge inverter circuit respectively.

The purpose of this utility model can also reach by following measure: the output of rectifier bridge D1～D4 joins by 4 pin of integrated circuit PIC1 in resistance R 2 and the active power factor emphasizer circuit in the power circuit; 1 pin of PIC1 links to each other with the secondary line chart of transformer T2; the grid of 2 pin and Q1 joins; 4 pin join by 4 pin of integrated circuit PIC2 in resistance R 8 and protection and the time-delay warm restart circuit; the grid of Q3 joins in 1 pin of PIC2 and the half bridge inverter circuit; and join by resistance R 3 primary winding with transformer T3; 2 pin of PIC2 are by resistance R 13; the elementary winding of diode D8 and transformer T4 joins; the secondary winding of T3 is by capacitor C 10; C11 links to each other with the secondary winding of transformer T5, and the secondary winding of T4 links to each other with the secondary winding of T5.

Fig. 1 is a functional-block diagram of the present utility model;

Fig. 2 is a contour structures schematic diagram of the present utility model;

Fig. 3 is an electrical schematic diagram of the present utility model.

The utility model is described in further detail below in conjunction with accompanying drawing (embodiment):

With reference to Fig. 1～Fig. 2, the utility model is made up of cover 1, housing 2, binding post 3, power circuit 4, APFC 5, half bridge inverter circuit 6, protection and time-delay warm restart circuit 7 etc.Housing 1 is made by aluminium, and cover 1 is equipped with by screw in two ends; Binding post 3 is housed on the cover 1; Electronic circuit board is loaded in the housing 1.

With reference to Fig. 3, AC power provides work essential energy by the power circuit that DZ, protective tube FUS, piezoresistance Rv, capacitor C 1～C3, transformer T1, rectifier bridge D1～D4 etc. form for entire circuit.Wherein DE is connected across power input and plays the lightning protection electro ultrafiltration; Ru plays the effect that suppresses surge current after being connected across FUS; C1～C3, T1 form electromagnetic interface filter, with the Harmonic Interference of suppression device to power supply.The APFC APFC of DC power supply through D1～D4 exchange through forming by integrated circuit PIC1, transformer T2, diode D5, Q1, capacitor C 5 etc., the line power factor of device is increased to more than 99%, and the harmonic distortion of circuit is reduced to below 10%.The power supply that is provided by APFC carries out high-frequency inversion to the half bridge inverter circuit of being made up of Q2, Q3, transformer T3～T5 and peripheral cell thereof, and provides the electric energy of lighting a lamp the high-frequency current after the inversion to sodium vapor lamp HG behind the T4 chokes.By open circuit, short-circuit protection and time-delay warm restart circuit that integrated circuit PIC2, transformer T5 etc. forms, mainly the trouble free service to circuit provides a series of protection.

The utility model has following advantage compared to existing technology:

1, under the sodium vapor lamp bubble condition of work of Same Efficieney, than traditional inductance type ballast joint Can reach more than 35%.

2, easy to use, starter need not be added and the sodium vapor lamp normal operation can be started.

3, grid adaptability is strong, can work reliably in the scope of circuit 150V～250, and the lighting power of sodium vapor lamp and luminous flux remains unchanged.

4, power factor (PF) reaches more than 99%, and less to the interference of electrical network, than higher, can not cause the big current start of electrical network to impact in isolated teamwork reliability.

Claims

1; the energy-efficient ballast of a kind of road sodium vapor lamp; comprise cover (1); housing (2); binding post (3); power circuit (4); it is characterized in that: also comprise APFC (5); half bridge inverter circuit (6); protection and time-delay warm restart circuit (7); the output of power circuit (4) links to each other with the input of APFC (5); the output of APFC (5) links to each other with the input of half bridge inverter circuit (6), and protection and time-delay warm restart circuit (7) link to each other with APFC (5) and half bridge inverter circuit (6) respectively.

2; ballast according to claim 1; it is characterized in that: the output of rectifier bridge D1～D4 joins by 4 pin of resistance R 2 with the middle integrated circuit PIC1 of active power factor emphasizer circuit (5) in the power circuit (4); 1 pin of PIC1 links to each other with the secondary line chart of transformer T2; the grid of 2 pin and Q1 joins; 4 pin join by 4 pin of resistance R 8 with protection and the middle integrated circuit PIC2 of time-delay warm restart circuit (7); the grid of Q3 joins in 1 pin of PIC2 and the half bridge inverter circuit (6); and join by resistance R 3 primary winding with transformer T3; 2 pin of PIC2 are by resistance R 13; the elementary winding of diode D8 and transformer T4 joins; the secondary winding of T3 is by capacitor C 10; C11 links to each other with the secondary winding of transformer T5, and the secondary winding of T4 links to each other with the secondary winding of T5.