CN2692961Y

CN2692961Y - Ultra-high power combined fluorescent lamp electronic ballast

Info

Publication number: CN2692961Y
Application number: CN 200420021480
Authority: CN
Inventors: 周勇
Original assignee: Shanghai Yaming Lighting Co Ltd
Current assignee: Shanghai Yaming Lighting Co Ltd
Priority date: 2004-03-31
Filing date: 2004-03-31
Publication date: 2005-04-13
Anticipated expiration: 2014-03-31

Abstract

The utility model relates to an ultra-high power combined fluorescent lamp electronic ballast. An EMC filtering unit (1), a filleting unit (2), a power factor correction unit (3) and a filtering unit (4) are combined together to form a female body; an inversion unit (5), an output unit (6) and a protection unit (7) are combined together to form a branch body. The one female body can be connected with a plurality of branch bodies. In the utility model, the most of the parts of the ballast whose cost occupies much cost of the ballast are combined together, and the cost is reduced greatly. The female body and the branch body are connected in a direct current mode; therefore, the female body and the branch body can be used widely, and the decay of the high frequency does not exist. The utility model is suitable for the occasions of markets, departments, classrooms, offices, etc. to use.

Description

Super high power primary-secondary type electronic ballast for fluoresent lamp

Technical field

The utility model relates to a kind of electric ballast that drives a plurality of fluorescent lamps.

Background technology

Along with popularizing that fluorescent lamp uses, market is also increasing to the demand of electronic ballast for fluoresent lamp.But the cost of electronic ballast for fluoresent lamp and product useful life are to limit the reason that it is further promoted the use of always.As shown in Figure 1, a common electronic ballast for fluoresent lamp generally includes several sections such as EMC filter unit 1, rectification unit 2, power factor correction unit 3, filter unit 4, inversion unit 5, output unit 6, protected location 7.Wherein EMC filter unit, rectification unit, power factor correction unit, these several parts of filter unit have constituted more than 60% of ballast cost, and these several parts are for the electric ballast of all different models, and its function and structural group Chengdu are close.Therefore, these several parts of many ballasts if can be integrally combined, then the cost of ballast can be reduced greatly.

For above-mentioned idea, a lot of companies have released one drag two or as shown in Figure 2 and have dragged three, in addition drag more primary-secondary type electric ballast.That is: EMC filter unit 1, rectification unit 2, power factor correction unit 3, filter unit 4, inversion unit 5, the protected location 7 with the ordinary electronic ballast combines; become a parent; and output unit 6 is daughter and places concrete fluorescent tube, thereby realizes that a parent connects the connected mode of a plurality of daughters.Though such scheme has also reached the purpose that reduces cost, but because by being to be connected between the ballast of this conceptual design and the fluorescent tube by high frequency, can produce high frequency attenuation, therefore line can not be oversize, this has just limited the fluorescent tube that this scheme drove can not be more, and the distance of parent and fluorescent tube can not be too far away.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of primary-secondary type electric ballast that can significantly reduce high frequency attenuation, thereby makes a parent can connect more fluorescent tube.

In order to solve the problems of the technologies described above, the utility model has adopted following technical proposals: a kind of super high power primary-secondary type electric ballast is provided, it is merged together EMC filter unit, rectification unit, power factor correction unit, filter unit, becomes a parent; Inversion unit, output unit and protected location are combined, become a daughter; A described parent can connect a plurality of daughters; Direct current is connected between described parent and the daughter.

The utility model reduces cost owing to the overwhelming majority that will constitute the ballast cost is merged together greatly.Because between parent and the daughter is that direct current is connected, but therefore large tracts of land is used, and does not have high frequency attenuation.In addition, for an electric ballast, two main elements that influence its life-span are pliotrons that the electrolytic capacitor used as filtering and inversion are used.Prolong their useful life,, except that the electrolytic capacitor of selecting better quality for use, provide better operational environment for it exactly for electrolytic capacitor; For triode, mainly be keep its operating voltage stable.Parent can freely be positioned in the suitable operational environment in the utility model, helps the prolongation in the useful life of its internal components.Simultaneously, parent is that daughter provides stable operating voltage, helps the raising in the useful life of daughter.

The utility model particularly suitable and market, workshop, classroom, office etc. need to concentrate the occasion of using fluorescent lighting.

Description of drawings

Fig. 1 is the schematic diagram of a prior art.

Fig. 2 is the schematic diagram of another prior art.

Fig. 3 is the schematic diagram of super high power primary-secondary type electric ballast of the present utility model.

Embodiment

Electric ballast of the present utility model as shown in Figure 3, EMC filter unit 1, rectification unit 2, power factor correction unit 3, the filter unit 4 with the ordinary electronic ballast is merged together exactly, becomes a parent.Inversion unit 5, output unit 6 and protected location 7 are combined, become a daughter.Described parent is finished the function of EMC filtering, rectification, power factor correction and filtering, and provides stable working power for daughter.Daughter mainly is a function of finishing inversion, output and protection.A parent can connect a plurality of daughters, and the quantity of the daughter that connects can be according to the watt level decision of the parent of design, is that direct current is connected between described parent and the daughter.Under a parent, can select the daughter of different size for use according to the difference of concrete fluorescent tube.

Claims

1, a kind of super high power primary-secondary type electronic ballast for fluoresent lamp is characterized in that, EMC filter unit (1), rectification unit (2), power factor correction unit (3), filter unit (4) are merged together, and becomes a parent; Inversion unit (5), output unit (6) and protected location (7) are combined, become a daughter; A described parent can connect a plurality of daughters.

2, super high power primary-secondary type electronic ballast for fluoresent lamp according to claim 1 is characterized in that, direct current is connected between described parent and the daughter.