RU68834U1 - ELECTRONIC START-UP CONTROL DEVICE FOR THE MODERNIZATION OF LUMINESCENT LUMINAIRES - Google Patents

Abstract

The utility model relates to special fields of electrical engineering, in particular to lighting engineering, and can be used for the modernization of fluorescent lamps with the aim of using electronic ballasts and control equipment and fluorescent lamps with a smaller diameter and length. The technical result of the utility model is the creation of a device that allows you to install electronic ballast and new lamps with smaller dimensions in the modernized lamp without any alteration of its electrical installation and holders of lamp lamps. (1. n.p.f.)

Description

Technical field

The utility model relates to special fields of electrical engineering, in particular to lighting engineering, and can be used for the modernization of fluorescent lamps with the aim of using electronic ballasts and control equipment and fluorescent lamps with a smaller diameter and length.

State of the art

A device is known for controlling current through a fluorescent lamp, comprising a ballast choke connected between one of the electrodes of the first cathode of the lamp and one of the wires of the AC mains, and a starter connected between the electrodes of both cathodes of the lamp, the other electrode of the second cathode of which is connected to the second wire of the network alternating current.

The disadvantage of this device is that it has a large power consumption, as well as pulsation of the light flux, does not provide heating of the cathodes and smooth ignition of the lamp.

The closest to the claimed object in technical essence and the achieved result is an electronic start-up regulating device (electronic ballast) used in fluorescent lamps, containing a line noise filter, a rectifier bridge, an electrolytic rectifier capacitor, a high-frequency pulse generator with output power transistors, diodes and RC

tuning and power elements, a resonant inductor with a series-connected capacitor, the second contact of which is connected to the electrode of the first cathode of the lamp, the second electrode of which is connected through the capacitor to the first electrode of the second cathode of the lamp, the second electrode of which is connected to the negative (common) terminal of the rectifier bridge (International Rectifier Data Sheet No. PD60212 rev.C).

This device is made constructively in the form of one unit, at the ends of which there are two terminals for connecting an AC network and four or more terminals for connecting wires to the holders of fluorescent lamps.

The disadvantage of this device is that it requires a significant change in the wiring diagram of the luminaire and a change in the lamp holders when replacing the electromagnetic ballast in the luminaire with an electronic ballast with a simultaneous transition from the use of obsolete lamps to more advanced lamps with other technical characteristics and smaller geometric dimensions, such as replacement T8 standard lamps for T5 standard lamps. Such a comprehensive alteration is a laborious task that requires a sufficiently high qualification of the staff and is expensive.

Utility Model Essence

The objective of the utility model is to create a device that allows you to install electronic ballast and new lamps with smaller sizes in the modernized lamp without any alteration of its electrical installation and holders of lamp lamps.

The specified technical result is achieved by the fact that in the electronic start-up - a regulating device (electronic ballast), which is included in

a set of blocks for the modernization of luminaires and containing a noise filter, a rectifier bridge, an electrolytic rectifier capacitor, a high-frequency pulse generator with output power transistors, diodes and RC tuning and power elements, a resonant inductor with a series capacitor connected, the second contact of which is connected to the first output of the first cathode lamps, a first capacitor is introduced connecting the second terminal of the first cathode of the lamp with the negative (common) terminal of the rectifier bridge, the second and third th capacitors connecting the minus (total) output of the bridge rectifier with an AC input unit, respectively.

Structurally, a set of blocks for the modernization of fixtures consists of three blocks. At the first end of the electronic ballast unit and the adapter block there are two pins that are inserted into the lamp holders of the lamp, and at the other end there are two sockets into which the contacts of the newly installed lamp are inserted, the sum of the lengths of both blocks and the new lamp corresponding to the length of the lamp being replaced. These blocks are first put on the contacts at both ends of the new lamp, and then the new lamp is installed in place of the old longer lamp. The adapter block contains only a board on which the pin and socket are connected in pairs. The third block is installed in the starter socket to close its terminals. The electromagnetic ballast choke remains in the wiring diagram of the luminaire and is subsequently used as a component of the network noise filter.

The utility model is illustrated by the attached ballast circuit shown in figure 1 and figure 2, illustrating the process of modernization of the lamp.

Industrial applicability

A device for the modernization of fluorescent lamps works as follows.

After installing a new lamp together with the blocks of the device as shown in figure 2, the device starts to work as a standard electronic ballast. In this case, the first newly introduced capacitor provides a short circuit by alternating high-frequency current of the first cathode of the lamp to the common wire of the device, and the second and third capacitors provide a short circuit by alternating high-frequency current to the common wire of the device of the second cathode of the lamp. Since the terminals of the former starter are always closed, when the current is consumed by electronic ballast in any mode, current will flow through the second cathode of the lamp, heating the cathode. If the microcircuit of the high-frequency pulse generator is capable of providing a mode of heating the cathodes and monitoring the lamp operation in standard operation, then the described device will also provide heating of both cathodes and monitoring the lamp operation, since both lamp cathodes are closed to the device’s common wire by high-frequency voltage as with standard inclusion of a generator chip.

The proposed device was used in luminaires with electromagnetic ballast to replace T8, LB and LD lamps with a power consumption of 36 W and 58 W with T5 lamps with a power of 28 W and 35 W, respectively.

As a result of comparative tests of the lamp before and after modernization, it was revealed that with the same luminosity of the lamps, the power consumption of the lamp as a whole decreased after

modernization 3.5 times. In this case, the temperature of the plastic spray and the dustproof housing of the electronic ballast was not more than 50 0C at an ambient temperature of 30 0C. In this case, the temperature inside the case of the electronic unit was not more than 80 0C.

Claims (1)

An electronic control and starting device for the modernization of fluorescent lamps, containing a network noise filter, a rectifier bridge, an electrolytic rectifier capacitor, a high-frequency pulse generator with output power transistors, diodes and RC tuning and power elements, a resonant inductor with a series-connected capacitor, the second contact of which is connected to the first output of the first cathode of the lamp, characterized in that the first capacitor is inserted into it, connecting the second output of the first cathode lamps with a negative (common) output of the rectifier bridge, second and third capacitors connecting the negative (common) output of the rectifier bridge with the AC inputs of the device, respectively.