DE29917356U1 - Brightness-enhancing, dimmer-compatible energy-saving lamp for 230 volt AC connection - Google Patents

Description

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1. The invention relates to a brightness-enhancing, dimmerable energy-saving lamp for 230 volt AC connection, with a 25 watt light bulb which is housed in a screw adapter housing together with the switching electronics, which can be provided with either an E27 or E14 thread. Hereinafter referred to as "energy-saving lamp".

It is known that the energy-saving lamps currently available cannot be dimmed. Other lighting conditions are therefore only possible by replacing them with another energy-saving lamp or incandescent lamp. The lamp base cannot be replaced (e.g. with an incandescent lamp) and a defective lamp must be disposed of completely, including its electronics. The toxic substances produced are not particularly environmentally friendly. The light is very cold compared to an incandescent lamp and therefore does not seem as cozy. Because the fluorescent tubes are sometimes openly incorporated into the socket, many energy-saving lamps cannot be used in damp rooms. The electronics of these energy-saving lamps can only switch on one fluorescent tube at a time. These energy-saving lamps cannot be operated with a 110 volt alternating voltage, as is still common in some countries.

These problems and disadvantages do not occur with the energy-saving lamp described below and have been solved as follows:

The housing base of the new energy-saving lamp contains a fuse and a varistor, which are connected in front of a rectifier that converts the mains input voltage of 220 V AC into 320 V DC. The voltage is "filtered" by a high-voltage electrolytic capacitor connected in parallel to the positive and negative poles of the rectifier and passed as DC voltage to the connection contacts inside the energy-saving lamp base. This then supplies a 25 W light bulb screwed into the base.

The light bulb lights up with an alternating voltage of 230 volts with an approx. 3-fold luminosity amplification, i.e. with the brightness of a 75 watt light bulb, without the power consumption being higher than that of a normal

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25 watt lamp. This also creates the desired energy saving effect. The increased luminosity is due on the one hand to the higher voltage on the light bulb and its heating coil and the gas filling which is now influenced by the direct current (light becomes whiter) and on the other hand to the resulting resonance circuit of the electrolytic capacitor (superimposed 50 Hz oscillation) and the filament (resistance) connected in parallel to it.

A defective 25 watt light bulb can be replaced at any time or replaced with a light bulb with a higher wattage without having to dispose of the entire lamp with its electronics, as is the case with previous energy-saving lamps. Since the light bulb does not contain any mercury and the electronics in the base can be reused, fewer pollutants are released into the environment when it is disposed of. The light bulbs used up to now can also be used at any time and can also be switched on in damp rooms.

If the circuit in the light bulb adapter is supplemented by a dimmer circuit or connected directly to the dimmer circuit, this combination creates a dimmable energy-saving lamp, which is not possible with a normal energy-saving lamp. This circuit can then also control several light bulbs at the same time.

The 25 watt light bulb can also be replaced at any time with a standard energy-saving lamp. However, the energy-saving lamp will only be about 50% brighter. Dimming with this energy-saving lamp is still not possible. However, at least the old energy-saving lamps that are no longer in use can continue to be used without having to be disposed of.

The usual E27 threads are intended for light bulbs with a wattage of approx. 25,200 watts and higher. They are easily switched by the electronic circuit of the energy-saving lamp. For the smaller sockets with an E14 thread and a wattage of 5 - 60 watts, the energy-saving lamp can also be used in its function. Whether a dimmer switch still serves a function with these reduced wattages of the light bulbs is up to the

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It is up to the user. At least in the range of 25 - 60 watt light bulbs with the E14 thread, dimming still seems to make sense. Of course, any other lamp holder can be used if the base of the energy-saving lamp has been converted for this purpose (e.g. for trains or in public buildings).

The 110 V AC supply voltage, which is still common in some countries, is suitable for the energy-saving lamp in exactly the same way as described above. All that needs to be done is to replace the light bulb.

However, due to the reduced voltage, the components can be made much smaller and cheaper if this appears necessary.

The direct current light in the light bulb appears a little whiter in the upper voltage range than in a conventional light bulb, but in the lower ranges the "warm" light bulb tone is achieved again (e.g. when dimmed). Another brightness control variant results from increasing or reducing the capacity of the high-voltage electrolytic capacitor. At the same time, however, the current consumption of the circuit also increases or decreases.

An energy-saving lamp of this type that meets these requirements is not yet known and could not be found in the publications.

Further details, advantages and features of the invention emerge not only from the claims and the features derived therefrom, individually and/or in combination, but also from an embodiment shown in the following circuit diagram and the cross-sectional drawing.

Show it

Fig. 1 shows the energy-saving lamp in cross-section with its screw thread contacts. The electronic circuit is embedded in a screw adapter housing (1) into which the 25 watt lamp (3) is screwed and into which the screw-in socket (2) is also integrated and at the lower end of which is the screw thread (4), optionally E 27 or E 14, which is provided at the lower part with a bent perforated disc made of tinplate (5) and a contact disc (6), into which the connecting wire for the 230 V AC input is inserted.

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The mains input voltage (230 V input) is fed via a 10 A micro thermal fuse (Si 1) directly to the rectifier (Gl 1) with its AC connections. The varistor V 1 is connected in parallel to the 230 volt AC input voltage.

A high-voltage electrolytic capacitor (C 1) is connected in parallel to the positive and negative output of the rectifier, which has a direct voltage of 320 V, and which filters the direct voltage.
The 2 lamp connection contacts (7), which are arranged below the screw-in socket (320 V output) for the light bulb, are soldered to the positive and negative poles of the capacitor.

Show it

Fig. 2 shows the circuit arrangement with the 230 V AC input and the series-connected micro-temperature fuse of Si 1 (10A/157C). The varistor V 1 (metal oxide 250V/390V) is connected in parallel to the 230 volt AC input voltage and prevents the build-up of an overvoltage and absorbs surge voltages. The bridge circuit of the silicon rectifier Gl 1 (1.5A/400V) connected to it is connected with its plus and minus outputs to the high-voltage electrolytic capacitor C1 (47pf/400V) and is thus parallel to the lamp connection contacts, to which the direct voltage of 320 V is now applied, and which lights up the filament of the screwed-in 25 watt light bulb.

Claims (18)

1. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt AC connection, which consists of a 25 watt light bulb which is housed in a plastic screw adapter housing together with switching electronics, which can be provided with an E27 or E14 screw-in thread/socket, characterized in that the 230 volt input AC in this energy-saving lamp is connected via a screw thread connection via a micro-temperature fuse (10A/157C) to a silicon bridge rectifier (1.5 A/400 V), to whose AC inputs a metal oxide varistor (250 V/390 V) is connected in parallel, which prevents overvoltage and surge voltage, and that this rectifier then converts the input AC voltage into a 320 volt DC voltage, which is connected to the plus/minus outputs of the rectifier with a high-voltage electrolytic capacitor connected in parallel (47 µf/400 V), which smoothes this direct voltage and, connected in parallel with a 25 watt light bulb, lets it light up with three times the brightness (75 watts), which can also be additionally controlled with a dimmer circuit. 2. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt AC connection, according to claim 1, characterized in that the energy-saving lamp circuit can also be built directly into the dimmer circuit and then regulates the brightness of one or more light bulbs in an energy-saving manner and can therefore be used regardless of the placement of the lamp. 3. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt alternating current connection, according to patent claim 1, characterized in that the circuit of the energy-saving lamp, also in combination with a dimmer circuit, can be installed in other light, lamp housings, light switches, light plugs or directly in floor, table, wall and ceiling lamps or in their connections. 4. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt alternating current connection, according to patent claim 1, characterized in that the energy-saving lamp or its circuit can also be used for/in a 110 V alternating current connection and in this case only the light bulb has to be replaced. 5. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt AC connection, according to claim 1, characterized in that the circuit, also in combination with a dimmer, is cast in an encapsulated module housing or soldered onto a circuit board and is thus easier to use for various installation options and can be used with the dimmer function, regardless of the placement of one or more lamps. 6. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt alternating current connection, according to patent claim 1, characterized in that the energy-saving lamp can also be used for other applications, e.g. railways, public buildings and in theft-protected systems, by exchanging the input voltage base and possibly also the output voltage base. 7. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt alternating current connection, according to patent claim 1, characterized in that the circuit of the energy-saving lamp is built directly into the base of an incandescent lamp or directly into the lamp. 8. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt alternating current connection, according to patent claim 1, characterized in that the circuit, also with its housing, is used in combination with a commercially available energy-saving lamp, sold or built directly into the energy-saving lamp or into its base. 9. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt AC connection, according to claim 1, characterized in that the components in the energy-saving lamp circuit can also be made smaller or one or more components of the circuit can be omitted or replaced by similarly functioning components (e.g. the varistor) in order to achieve additional power savings and at the same time reduce the manufacturing price, or to realize other circuits or multiple circuits by means of higher power components. 10. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt alternating current connection, according to patent claim 1, characterized in that the energy-saving circuit, with simultaneous reduction of its current/voltage values, is also used with 12 volt halogen lamps or halogen circuits in order to achieve a greater light output even with smaller incandescent lamp outputs. 11. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt alternating current connection, according to patent claim 1, characterized in that the energy-saving lamp circuit is also used in conjunction with other incandescent lamp designs when these are operated with alternating current. 12. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt alternating current connection, according to patent claim 1, characterized in that the energy-saving lamp circuit is also used for other consumers with ohmic resistors, which can thereby achieve a more favorable power consumption. 13. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt alternating current connection, according to patent claim 1, characterized in that the energy-saving lamp circuit is only used as an adapter for incandescent lamps or the energy-saving lamps currently in use. 14. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt AC connection, according to claim 1, characterized in that the micro-temperature fuse (10A/157C) in the energy-saving lamp circuit can also be replaced by another type of fuse (e.g. glass tube fuse) or can be omitted entirely. 15. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt AC connection, according to claim 1, characterized in that the storage capacity (capacitance) of the high-voltage electrolytic capacitor in the energy-saving lamp circuit can be made larger or smaller in order to change the current consumption of the circuit and the luminosity of the light bulb and at the same time to allow an influence on the dimming capability of the circuit. 16. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt AC connection, according to claim 1, characterized in that the metal oxide varistor (250 V/390 V) in the energy-saving lamp circuit, which prevents overvoltage and surge voltage, can also be replaced by a high-voltage capacitor (0.01 µf/400 V), or similar, or can be replaced by a resistor-capacitor combination, which, depending on price and efficiency, appear suitable for the circuit used and its use. 17. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt AC connection, according to claim 1, characterized in that the energy-saving lamp can be provided with an E27 or E14 thread on the input AC connection or on the output DC connection and the threads can also be arranged in a mixed manner. 18. Brightness-enhancing, dimmerable energy-saving lamp for 230 volt alternating current connection, according to patent claim 1, characterized in that the energy-saving lamp circuit in conjunction with one or more accumulators charges these and at any time releases this energy again to an incandescent lamp, conventional energy-saving lamp or other ohmic consumer.