CN203120269U - Improved Structure of Ballast for Electrodeless Lamp - Google Patents

Abstract

The utility model discloses an improved ballast structure for an electrodeless lamp, which includes: a power factor correction unit electrically connected to a preset DC power supply, a plurality of frequency conversion units electrically connected to the power factor correction unit, and A plurality of electrodeless lamps electrically connected to each frequency conversion unit use the power factor correction unit to increase the power factor of the DC voltage output by the DC power supply, and then introduce the DC voltage into each frequency conversion unit to convert the DC voltage into a driveable For the AC drive signal of the induction lamp, a control unit can be provided between each frequency conversion unit and the induction lamp as needed. These control units can respectively receive the negative feedback signals output by each frequency conversion unit and send a control signal to each frequency conversion unit respectively. unit to adjust and control the output of each frequency conversion unit to drive the induction lamp to produce different luminous effects.

Description

Improved Structure of Ballast for Electrodeless Lamp

technical field

The utility model relates to an improved ballast structure of an electrodeless lamp, in particular to a ballast circuit structure in which a single ballast can supply current required by a plurality of electrodeless lamps.

Background technique

Regarding the ballast of the electrodeless lamp, the more common circuit structure is such as the new patent case of Taiwan Patent Announcement No. M383678 "Ballast Device for the Electrodeless Lamp", which mainly uses a DC power supply (or an external AC power supply via Rectified and filtered to become a DC power supply) Connect a power factor correction unit as required, and then convert the DC power supply into an AC drive signal through a frequency conversion unit to drive an external electrodeless lamp, and can be controlled by the frequency conversion unit as required The output terminal is connected to a control unit, so as to receive a negative feedback signal output by the frequency conversion unit, and output a control signal to the frequency conversion unit to adjust the output of the frequency conversion unit.

There is also a new patent case such as China Taiwan Patent Announcement No. M386431 "Dimmable Ballast Device for Electrodeless Lamp". According to the light of the electrodeless lamp, the dimming signal output unit outputs a dimming signal to the control unit, so as to adjust the output light of the electrodeless lamp; Device" new patent case, which is to add a power detection unit to the above basic structure, the power detection unit can detect the AC drive signal output by the frequency conversion unit, and output a power detection signal to the control unit, the The control unit can also receive the negative feedback signal output by the frequency conversion unit, and output a control signal to the control unit after overall comparison, so as to form an application structure with a wider output form.

However, the above structures are all combined in a single ballast (combination of power factor correction unit, frequency conversion unit and control unit) in conjunction with an electrodeless lamp. The manufacturing cost also increases accordingly, and at the same time, it is difficult to change in use according to different needs, forming a lack of application.

Contents of the invention

The main purpose of the utility model is to provide an improved ballast structure of an electrodeless lamp, which can effectively reduce the overall production and use costs by replacing the traditional independent ballast structure with a single shared ballast.

Another object of the present invention is to provide an improved ballast structure for an electrodeless lamp, which can effectively reduce the volume of the overall structure when applied to a lamp with multiple electrodeless lamps at the same time, so as to improve space utilization efficiency.

The technical solution adopted by the utility model to solve the technical problem is: an improved structure of the ballast of the electrodeless lamp, which includes:

A DC power supply, capable of outputting a DC voltage of required specifications; a power factor correction unit, electrically connected to the DC power supply, so as to increase the power factor of the DC voltage output by the DC power supply; multiple frequency conversion units, respectively having input terminals and Output terminals, wherein each input terminal is electrically connected to the power factor correction unit to introduce a DC voltage and convert the DC voltage into an AC drive signal that can drive the electrodeless lamp, while the output terminals of each frequency conversion unit are electrically connected to each other. Connect an electrodeless lamp.

According to the above structure, the output terminals of each frequency conversion unit are respectively provided with a control unit, and these control units can respectively receive the negative feedback signals output by each frequency conversion unit, and send a control signal to each frequency conversion unit to adjust and control each frequency conversion unit Output.

According to the above structure, wherein the DC power source is converted from AC voltage to DC voltage by an AC power source through a rectification unit.

According to the above structure, an electromagnetic interference filtering unit capable of filtering electromagnetic wave interference is provided between the AC power supply and the rectifying unit.

The beneficial effect (1) of the utility model is: by replacing the traditional independent ballast structure with a single shared ballast, the overall production and use costs can be effectively reduced.

The beneficial effect (2) of the utility model is: when applied to a lamp in which multiple electrodeless lamps exist simultaneously, the volume of the overall structure can be effectively reduced to improve space utilization efficiency.

The features, technical means, specific functions, and specific embodiments of the present utility model are described in detail with drawings and figure numbers as follows.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the circuit block diagram of the first embodiment of the utility model;

Fig. 2 is the circuit block diagram of the second embodiment of the utility model;

Fig. 3 is the circuit block diagram of the third embodiment of the utility model;

Fig. 4 is a circuit block diagram of the fourth embodiment of the utility model.

Detailed ways

In order to further understand the features, technical means, and achieved specific functions and objectives of the present utility model, more specific embodiments are listed hereby, followed by drawings and drawing numbers in detail as follows.

Please refer to Figure 1, it can be seen that the circuit structure of the first embodiment of the present invention mainly includes: a power factor correction unit 3, multiple frequency conversion units 1, 1a, 1b and multiple electrodeless lamps 2, 2a, 2b; The power factor correction unit 3 is electrically connected to an external DC power supply 40 to increase the power factor of the DC voltage output by the DC power supply 40. Multiple frequency conversion units 1, 1a, 1b (the number of frequency conversion units can be designed according to actual needs, and the capacity of the power factor correction unit 3 is changed to increase or decrease) respectively have an input terminal 11, 11a, 11b and an output terminal 12, 12a, 12b, which can be introduced into the power factor correction unit through the input terminal 11, 11a, 11b The DC voltage output by the unit 3 is then converted into different AC drive signals by each frequency conversion unit 1, 1a, 1b, and the different AC drive signals are respectively driven by different output terminals 12, 12a, 12b. (size power) electrodeless lamps 2, 2a, 2b.

In this structure, a plurality of frequency conversion units 1, 1a, 1b connected to a power factor correction unit 3 are arranged inside a single ballast, and through the independent functions of the multiple frequency conversion units 1, 1a, 1b, It can drive electrodeless lamps 2, 2a, and 2b of different sizes or powers. Compared with the traditional combination structure of combining different frequency conversion units with a power factor correction unit, it can effectively reduce production costs and reduce the use of ballasts as a whole. The quantity of the ballast can be reduced relatively, and the effect of reducing the overall volume of the ballast can be achieved; at the same time, during design, the frequency conversion unit 1, 1a, 1b can be increased or decreased according to the actual needs or the capacity of the power factor correction unit 3 number, so it is more flexible in application.

Please refer to Fig. 2, it can be seen that the second embodiment of the present invention is based on the circuit structure of the aforementioned first embodiment, which includes: multiple control units 5, 5a, 5b, and the same power factor as the first embodiment Correction unit 3, multiple frequency conversion units 1, 1a, 1b and multiple electrodeless lamps 2, 2a, 2b; wherein the power factor correction unit 3, multiple frequency conversion units 1, 1a, 1b and multiple electrodeless lamps 2, 2a, The setting and combination form of 2b are the same as the first embodiment, the only difference is that the control units 5, 5a, 5b are respectively set at the output terminals 12, 12a, 12b of the frequency conversion units 1, 1a, 1b, which can be Respectively receive the negative feedback signals output by each frequency conversion unit 1, 1a, 1b, and after processing and analyzing, send a control signal to each frequency conversion unit 1, 1a, 1b respectively, so that the frequency conversion units 1, 1a, 1b can be adjusted and controlled respectively Its output, and drives each electrodeless lamp 2, 2a, 2b to produce different luminous effects.

Please refer to Fig. 3, it can be seen that the third embodiment of the present invention is also based on the circuit structure of the first embodiment, which has the same power factor correction unit 3 and multiple frequency conversion units 1, 1a as the first embodiment . The first embodiment is the same, the only difference is that the power factor correction unit 3 is electrically connected to an external DC power supply 4, and the DC power supply 4 converts its AC voltage into a DC voltage by an AC power supply 41 through a rectification unit 43, Furthermore, an electromagnetic interference filter unit 42 capable of filtering electromagnetic wave interference can be provided between the AC power source 41 and the rectifier unit 43 as required, thereby making the circuit structure of the third embodiment of the present invention applicable to general AC power sources.

Please refer to Fig. 4, it can be known that the fourth embodiment of the present utility model is based on the circuit structure of the aforementioned second embodiment, which includes: the same power factor correction unit 3 as the second embodiment, and multiple frequency conversion units 1, 1a , 1b and multiple electrodeless lamps 2, 2a, 2b and multiple control units 5, 5a, 5b; wherein the power factor correction unit 3, multiple frequency conversion units 1, 1a, 1b, multiple control units 5, 5a, 5b The arrangement and combination form of the plurality of electrodeless lamps 2, 2a, 2b are the same as the second embodiment, the only difference is that the power factor correction unit 3 is electrically connected to an external DC power supply 4, and the DC power supply 4 An AC power supply 41 converts its AC voltage into a DC voltage through a rectification unit 43, and an electromagnetic interference filter unit 42 that can filter electromagnetic wave interference can be installed between the AC power supply 41 and the rectification unit 43 as required, thereby , so that the circuit structure of the fourth embodiment of the utility model can be applied to the general AC power supply, and has the function of adjusting and controlling the output of the frequency conversion unit 1, 1a, 1b, so that each electrodeless lamp 2, 2a, 2b has different luminous effects.

Claims (4)

1. the ballast structure-improved of an electrodeless lamp is characterized in that comprising at least:

One direct current power supply is exported the direct voltage of required specification;

One power factor correcting unit is electrically connected at this DC power supply, uses the power factor of the direct voltage that promotes this DC power supply output;

A plurality of converter units have input and output respectively; Wherein said each input is electrically connected at this power factor correcting unit, importing direct voltage, and this direct voltage is converted to the interchange that drives electrodeless lamp drives signal, and electrically connect an electrodeless lamp respectively in the output of described each converter unit.

2. the ballast structure-improved of electrodeless lamp according to claim 1, it is characterized in that, the output of described each converter unit is respectively equipped with a control unit, these control units are accepted the negative feedback signal of each converter unit output respectively, and send one respectively and control signal to each converter unit, to adjust the output of each converter unit of control.

3. the ballast structure-improved of electrodeless lamp according to claim 1 and 2 is characterized in that, this DC power supply converts alternating voltage to direct voltage by an AC power through a rectification unit.

4. the ballast structure-improved of electrodeless lamp according to claim 3 is characterized in that, is provided with an electromagnetic interference filter unit for the filtering Electromagnetic Interference in the middle of this AC power and the rectification unit.

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