DE2037970A1 - Motor vehicle with two brightness levels signal or similar lamps - Google Patents

Description

Herne, 8000 Munich 23,

Freillgrathstrasse 19 ■% ·· ■■ »· _ Eisenacher Strasse 17

P.O. Box 1 «Dipl.-Ing. R. H. Bahr ρ ^, - αμ * .β · ω «

Dipl.-Phys. Eduard Betzier ⁵¹⁰¹⁴ Dipl.-Ing. W. Herrmann-Trentepohl.

Telegram address: r «ι- Telegram address ι

Bahrpatente Herne PATENTANWÄLTE Babetzpat Munich

Telex 08229853 Telex 05 24 562

^Γ 203797 Π ^Π Bank accounts:

^ 'V Bayrische Vereinsbank Munich 952287

Dresdner Bank AQ Kerne 202 436 Postscheckkonto Dortmund

Account Dortmund S5 & 68

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FAUSIEO OAEBLIiO & 0. S.p «A ·, G or so Union« Soviet ica 600, I

! Turin, Italy

"Motor vehicle bit for signal lamps or similar lamps ^{11 having brightness levels}

The invention relates to motor vehicles and is directed in particular on electrical circuits for producing two levels of brightness for the lamps of the signal devices in motor vehicles

The increasing density of motor vehicle traffic leads to the trend of increasing the power of lamps in motor vehicles to display the stop, the change of direction and the like. Although this enlargement during the day is justified is when an illuminated lamp must be visible even when it is fully exposed to sunlight get serious drawbacks at night because bright lamps other Road users can dazzle · Circles for generating two levels of brightness have therefore been prepared. These circles enable the brightness of the signal gate directions Lamps used at Naoht to reduce Circuits use a voltage limiting resistor,

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which s @ ni @ t _s during the! cage course so that the lamp is supplied with full voltage from the battery, while during the night the current flows through the resistor and the voltage with which the lamp is g © spe3 *, This reduction is usually done on the rear direction indicator lamps and sometimes also on the Breneeiguallampen is excited.

A circle of this kind shows a lot of serious parts during the night, at the moment of excitement © In® a signal circle when the filament of the lamp neeli cold as its resistance is low, the presence of & © s B @ gr @ nmuigi3% äi ®ret ^ ä, ®s a great reduction in the spanirangisia & ®τ ! Sap® & © rv @ rrtt £ "fc unäL © e daait a time delay awisehen t®a lig © alli © k ^ Lfet © in the d® a the circle is closed, wheel the Aisgenfeliokg la ata di © Lamp © lights up · the circle
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Switch that closes when the higher brightness level is required and opens when the lower brightness level is desired, contains and see identified by means (12, 23) for delaying the opening of the switch (12a, ^12f a | 23a) If the lower brightness level is required, Ms the lamp (10, 10 '} 20, 20 «) has lit up, but below the reverberation) of its upper brightness level.

She drawing shows in:

Pig. 11 is a circuit diagram of a known electrical circuit for Generation of two brightness levels for the signal lamps in a motor vehicle;

Fig. 2 is a circuit diagram of an electrical circuit according to the invention for generating two levels of brightness} and in

3 shows a circuit diagram of an electrical circuit as according to the invention Modification of the in Pig. 2 reproduced circle

In the drawings you will find the same for similar components throughout Reference sign usage

Fig. 1 shows an automotive signal device circuit having two Level the brightness as it has been used up to now. There is a battery 1 and a key operated switch 2, on the various branch lines 3 and 4 are connected to operate the individual devices. A breaker or blinker 5 »receives, for example, to operate the direction indicator its current through the switch 2 · The breaker 5 is connected to a control lamp 6, which is located near the driver's seat sits. The interrupter is also connected to a switch 7 which has a cable of a control device on the steering wheel forms and automatically switches off the exposure indicator when

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the vehicle has completed its curve · The switch 7 can optionally switch two symmetrical circuits in which a multitude of bulbs 8, 9, IO and 8 «, 9% 10» for the right and left front, side and rear direction indicators are provided, which are connected in parallel to each other

The lines to the bulbs of the rear indicators 10 and 10 * form a rope of the circle and are provided with voltage limiting resistors 11 and 11 ^f . These resistors can be short-circuited with the help of switches 12a and 12a, which are controlled by a grounded relay 12 which forms part of a circuit which can be switched on with the aid of a suitable switch 13 which also controls the parking lights 14 Relay 12 is parallel to the parking lights 14 ο During the day when the parking lights are not switched on, the switches 12a, ^12f a are closed and the limiting resistors 11 and 11 'are short-circuited, so that all bulbs 8, 9 and 10 or 8 ¹ , 9 ¹ and 10 'light up at the same time and are supplied with the same voltage as full battery voltage, usually 12 YoIt.

During the night, the switch 13 is closed and energizes the parking lights 14. The relay 12 is activated and opens the switches 12a and 12a, so that the resistors 11 and 11 * in the circuits supplying the rear light bulbs 10 and 10 * are effective · The presence of these resistors causes a delay in the lighting up of lamps 10 and 10 'when they are cold, because under these circumstances the resistance of the lamp filament itself is much less than when the lamp is hot Lightbulb. The delay in the illumination may result in the case of a turn signal system to an inactivity of the incandescent lamp during the first and the second even Aufleuchtzyklus · The delay may be about _o 2 · lake and the cause of serious

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Be accidents »

Fig. 2 shows a circle according to the invention which is similar to the circle of fig. 1, except as will be mentioned below. As can be seen from PIg ₀ 2, the limiting ^{resistors 11 and II 1} are short-circuited by switches 12a and 12'a, which are activated by a relay 12, which is not grounded and is not parallel to the parking lights 14, but with the aid of a conductor is switched on at two connection points 17 and 17 * between the incandescent lamps 10 and 10 * and their respective resistors 11 and II ¹ · In the two branches leading to the connection points there are two diodes 18 and 18 * that only transmit the current in the direction of of the relay to flow.

The relay 12 is dimensioned so that it is only energized at a predetermined voltage, for example 8 volts if the vehicle has a 12-volt battery. the relay 12 in the circuit parallel to the light bulbs 10 and 10 * is switched on, but not energized, % when the switch 7 of the control arrangement on the steering wheel is in the rest position.When the switch 7 is one of the two circuits for actuation of the right or left direction indicator closes, the current flows through one of the resistors 11 or II ^1, one of the diodes 18 or 18 'and the conductors 16 12 to Relay Hur when the voltage drop across the incandescent lamp 10 or 10 ^f and the relay 12 has a value gleioh approximately corresponding 8 Volt has reached which is sufficient to make the incandescent lamp light up even if it was initially cold, the relay 12 is energized · It immediately leaves the switches 12a and 12'a open, whereby the resistor 11 or 11 * is switched into the circuit.

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At the beginning, the full battery voltage is entered in the circle, since the switch 12a or 12 * a is closed, so that the rear light comes on quickly, at the same time as the front and side lights, but on a brightness level below the upper tier »

If the voltage drop across the bulb 10 or 10 * to adf the value of 8 yoIt increased because of the heating of the light bulb is, the Belay 12 switches on and opens the E folder 12a or 12 * a, so that the limiting resistor 11 or 11 * im Circle takes effect, and the brightness level of the rear light bulb 10 or 10 * reaches the desired lower mirror.

You can use the same principles when constructing a Circle with an upper and lower brightness level for the incandescent lamp of the brake signal lamps, as shown in Figo 3 is shown. You bulbs 20 and 20 * of the right and left Stop signals are received in parallel from the battery 1 via a switch 19 are supplied according to the actuation of the brake pedal and are earthed · At night these bulbs are switched on by an switched voltage limiting resistor 22 is supplied, which is short-circuited during the day with the help of a switch 23a, which is operated by a relay 23, which is in the Circuit is switched on by actuating a switch 13, which in the illustrated embodiment single-pole single pull switch is ο Sas Relay 23 is via a conductor 24 to a connection point 25 is connected between the resistor and the bulbs 20 and 20 *. » In each position of the Sohalter 13 is Resistor 22 is always short-circuited at the moment when the circuit is caused by the sole closing of the Sohalter 19 when braking the vehicle is excited because switch 23a is always closed under these circumstances heat up so that the voltage drop across them reaches the value of 8 volts, then the relay 23 »that runs parallel to this glow

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lamps is energized This leads to the opening of switch 23a, so that the resistor 22 is effective in the circuit in the manner described

You circles according to the invention are extremely simple and provide a precise mode of action «They also have a long service life ·

Patent claims ι - 8 -

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Claims (1)

Claims Motor vehicle with two brightness astuf s exhibiting signal lamps with a lamp and an electrical circuit for supplying the lamp optionally at higher or lower. Voltage corresponding to a higher or lower brightness level with a power source and a current limiting resistor in series with the lamp »a switch in parallel with the resistor, which closes when the higher brightness level is desired trad see opens when the lower brightness level is switched on, marked by means (12, 23) for delaying the opening of the switch (12a, 12 * a; 23) when the lower brightness level is desired, the lamp (10, 10 ¹ J 20, 20 *) has lit up, however is still below its upper brightness level ·, - ™ τ "- Z ₀ motor vehicle according to claim 1, dadu rc hgek β η η indicates that the devices for delaying the opening of the switch from devices (12, 23) for opening the switch (12a, 12 * a; 23) and parallel to the Lamps (10, 10 '; 20, 20') are activated when the lower level of brightness is required, these devices only opening the switch when the voltage drop across the lamp reaches a certain point. 3 »Motor vehicle according to claim 2, characterized 5 daä the facilities to open the switch aua ainaa known SeIa7 (12, 23) exist· 1 09 ¹ · ί '·' / 1 τ 30 COPY