FR2545195A1 - MOTOR VEHICLE FIRE COMPRISING LIGHT DIODES AS SOURCES OF LIGHT - Google Patents

Abstract

AUTOMOTIVE VEHICLE FIRE, CHARACTERIZED BY THE IMPLEMENTATION OF THREE-PHASE 21 WHITE OR TRANSPARENT LED LIGHTS IN THE NON-EXCITED STATE, ALLOWING TO OBTAIN AT LEAST TWO DIFFERENT FIRE COLORS FOR DIFFERENT LIGHTS AND FUNCTIONS, AND ISSUES OF LIGHT DEPENDING ON THE DESIRED SIGNAL COLOR, CAN BE CONTROLLED BY SUBJECTING THEM TO DIFFERENT VOLTAGE ACTIONS 26, 27, 28. THE INVENTION RELATES TO A MOTOR VEHICLE FIRE.

Description

"Motor vehicle light with diodes

  as light sources ".

  The invention relates to a vehicle fire other than

  tomobile, including a signaling light for

  the automobile, with light-emitting diodes or

  light diodes as sources of light

  re, which are mounted on or in a base plate.

  DE-OS 27 32 780 describes a device of this type with regard to a safety lighting for a motor vehicle; a reflective printed circuit board with light-emitting diodes is used and is provided with a printed circuit or circuit

  conventional electrical system for connecting light-emitting diodes

  The circuit board includes at the same time

  lighting and the electrical circuit Thanks to a

  determined light-emitting diodes on the plate

  printed circuit board, it is possible to represent figures

  fres, letters or other similar signas.

  We know, on the other hand, according to the DE-OS

  28 37 596 or DE-OS 28 37 635 of the lines of diodes

  In these devices, the LEDs serve

  for purposes of indications They present themselves in micro-

  platinum-mounted light-diode arrays, which are associated with diffusion elements of the

  light to obtain certain optical effects.

  The motor vehicle fire according to the invention is characterized by the implementation of two-phase luminous dicdes, three-phase, white or transparent to

  non-excited state, allowing at least two

  their different fires for different light functions.

  and / or signal and which, depending on the desired signal color, can be controlled by subjecting them to actions of different voltages, A motor vehicle light having these characteristics provides vis-à-vis the known achievements the advantage of allowing to obtain, with very means

  simple, light effects of different colors pre-

  determined, the same surfaces of light emitting light

  It is thus possible to obtain light effects

  with a particularly strong light intensity, since different light

  need to be arranged one against the other for

  their different fire, so that each time, the entire surface of the fire is available for the emission of light. The arrangement according to the present invention

  particular advantages for traffic signal lights

  vehicles, since there, for example, for the taillight and the stop light, on the one hand, and for the flashing light, on the other hand, it is necessary to have

  colors of different signals which, in the manner proposed

  may be provided on the same total area of

light output.

  The embodiment according to the invention

  tion, offers, on the other hand, the advantage that the impression

  given by a vehicle is not impaired by a large

  number of different colored diffusing glasses, being

  born that the three-phase light diodes used have,

  in the non-excited state, the white or transparent appearance

  headlights or headlights

  located in the vicinity. It is therefore possible to

  primer expensive devices for producing a white, or white, 3-colored appearance of signal lights in the motor vehicle e

  implementation, in accordance with the

  three-phase light-emitting diodes, furthermore, the indication without additional expense of operating conditions

  This is possible by using light diodes

  existing three-phase leafminers on the market that eradicate

  red and green, or in red and yellow, followed by

  before the anode feed line that is subjected to the action

  In addition, it is possible to produce

  their mixtures if two anodes are fed simultaneously

  in such a way that, for example, at least

  shot of red and green, we obtain, by mixing, the yellow color.

  In this respect, in accordance with the standard

  by red light for tail light or brake light and

  yellow mole for flashing light, it may be created for example, a green light indication of running status signaling to a vehicle following that the previous vehicle

  is not in the braked state or ready to brake.

  An advantageous embodiment of the lights

  of a motor vehicle according to the invention, is obtained

  naked by setting up a number of microplates-

  light diodes instead of light-emitting diodes

  discontinuous, in the manner of a matrix on

  a common base plate, there is then-advantage to applying

  light diode chips on an

  In this case, the output of the light is particularly intensely effected in the desired direction, the arrangement of light-diode chips on a common base plate is, from the point of view of view of the manufacturing technique, more advantageous than the use of individual light diodes

  place in a discontinuous manner and, consequently, makes it

  4, - Easily easier and less expensive assembly of all the lights according to the invention The superficial coating

  reflective is advantageously constituted by a rev S-

  metal coating, preferably an aluminum coating, obtained by coating by vacuum metallization or by curing.

  as is known from the realization of

  reflective layers for vehicle fires

motor vehicles.

  As a base plate, it is used primarily

  an electrically conductive metal plate, preferably a copper plate, which forms at the same time

  an electrical supply line to the microchips of diode

  As a protective coating for

  light diode chips, housed, preferably

  in recesses in the form of cavities of the base plate, it is advantageously used a layer of material

  transparent synthetic material, preferably in polyes-

ter or silicone resin.

  In order to obtain particular optical effects

  diffusion surfaces, the surface of the transparent plastic layer mentioned above can be

  consisting of a kind of layer with irregular surface, with

  or similar, however, it is an advantageous product

  light scattering as described above,

  in the case in question, by means of a diffused glass

  separated layer placed above the layer of synthetic

  tick. The invention will be better understood by means of

  the following description and accompanying drawings representing

  embodiments of the invention 2 drawings in which: FIG. 1 is a view of the external structure of a three phase light diode, FIG. 2 is a view of the mounting of a three phase light diode, FIG. FIG. 3 is a schematic view of a

  first embodiment of an automatic vehicle fire

  mobile device comprising three-phase light-emitting diodes for obtaining different colors of signals on the same luminous surface, FIG. 4 is an enlarged sectional view of a motor vehicle lamp according to the invention, FIG. a schematic view of another exemplary embodiment for the constitution according to

  to the invention of a lamp serving as a signal for a vehicle

tomobile.

  In FIG. 1, reference numeral 10 denotes the assembly

  This comprises a base plate 11 and a light-diffusing cap 12 disposed over it in the direction of the output of the lamp.

  light, as well as connections 13 for a first

  first anode, 14 for a second anode and 15 for the

  method. FIG. 2 shows the three-phase light-emitting diode mounting structure 10. The two anodes are again designated by 13 and 14, the cathode by 150. The light diodes themselves are designated by FIG.

symbolically by 16 and 17.

  Three-phase light diodes of this type are provided, for example, by the firm Telefunken under the names of CQX 31 or CQX 32, the first

  mentioned emits the choice of red or green light

  that the voltage action is applied to the anode 13 or 14, while the second light diode mentioned emits the choice of red or yellow light If the two anodes

  13 and 14 are simultaneously

  it is a color of mixture which is emitted, where the

  combination of green and red gives the bright color

  which is the one used on the motor vehicle for

flashing signal effects.

6.-

  The voltage action applied by anode is

  depending on the type of three-phase light diode used

  at 1.5 to 2.5 volts DC voltage; the size occupied by an individual three-phase light-emitting diode or a corresponding chip of light-emitting diodes

  three-phase is of the order of about 5 x 5 mi 2.

  In FIG. 3, reference numeral 20 designates a

  base on which, depending on the size of the plate, is mounted a corresponding number of light diodes a

  three phases arranged discontinuously or half

  Light diode chips 21 This device

  seems of light diodes can be divided in different ways to get the desired light functions and /

  or signal According to the arrangement of Figure 3, two

  Different partitions are indicated in the drawing, namely, one corresponding to vertically divided zones 22, 23 and 24, corresponding to the taillight / red, flashing / yellow and stop / red functions.

  the total area of part 22, 23 or 24 subject to each

  that in the case of tension, the result is an analogous

corresponding lightness.

  Another distribution is obtained by implementing a roughly circular shaped zone 25 that can be switched on separately, for example to produce a yellow flashing light inside a brake light or a reversing light red To produce the yellow coloration, the two anodes of the three-phase light-emitting diode are acted upon, which otherwise illuminates the choice

in green or red.

  The two positive connections of the device

  are designated 26 and 27, the negative connection by 28.

  According to the arrangement shown in FIG. 3, the positive connection and the ne connection have been connected in series.

  gaive each time ten light diodes or microplate-

  light diodes, corresponding to a voltage applied

  24 Volts The three-phase light diodes juxtaposed

  taposées in a line are all parallel to the

first series editing.

  The signal color zones explained using FIG. 3 represent only one exemplary embodiment; the usual or prescribed light intensities for the different signal functions are taken into account in that, for the normal rear lamp, the voltage is applied to a reduced proportion in the appropriate measurement of the light diodes in relation to the the braking state The rear light zone 22 corresponds to about half of the flashing zone 23 and

  about a quarter of the area 24 used for the stop light.

  In addition to the signal colors used today for motor vehicle lights, it is possible with the proposed arrangement, for example, also to emit a green signal color overall as a sign to indicate safe rolling. of the vehicle

  automobile on the other hand, all the over-

  luminous surface for fires could be divided into

  vantage to indicate relatively light braking or

  relatively strong by a red stop light which is all the more

  more or more intense Other variations are possible as well.

  In FIG. 4, reference numeral 30 designates a

  that of base which receives in cavities 32 a certain number of

  of three-phase light-emitting diode chips 31

  The entire surface of the base plate 30, including the cavities 32, is provided with a depot 8 in a reflective aluminum layer 33 so as to reflect the light emitted by the light diodes in the predetermined direction. In the manner of a parabolic reflector The connecting lines between the various discrete chips of light-emitting diodes 31 are indicated by 34. The base plate 30 is advantageously made of conductive material, for example copper, and can therefore be integrated into directly, preferably in the form of a cathode set to 1 s

  earth, in the mounting device.

  The whole device of the microchips of

  luminaires 31 is coated with a layer of synthetic material 35 to protect the diodes, the effect of dispersed

  light is essentially provided by a different glass

  separate fuser 37, which is arranged at a distance above the

  microplates 31 leaving a layer of air free 36.

  This embodiment also allows the orientation of

  light diffusing caps 38 towards the interior of the disc

  positive lighting, which has the effect of facilitating the

  exterior cleaning of all fires.

  FIG. 4 clearly shows that from the point of view of manufacture and cost, a device of the kind of matrix of light-emitting diode chips with common sealing and diffusing glass is more

  advantageous that the use of individual LEDs

  On the other hand, for small series of spe-

  The equipment with discontinuously provided components may be more advantageous. This is particularly true where the elements are only slightly soiled. Discontinuously provided components can not be coated without loss of diffusion effects.

  covered, but may, in any case, be provided with a

common purpose.

  Figure 5 shows another example of

  for the creation of a motor vehicle fire

  bile; it is provided there, on a base plate 40, four different light tables 41, 42, 43 and 44 The light boards 41, 42 and 43 can again be constituted, for example, as a rear light, flashing light and fire stop, while the luminous array 44 forms for example, a reversing headlight, Since a reversing headlamp 9._

  white, on the one hand, is not a hindrance to the aesthetic

  of a colorless or white light and, on the other hand, as far as operational efficiency is concerned, there is little to require of the reversing light, it is possible to combined of paintings

  LEDs 41 to 43 and a light emission table

  classic mate 44 having an incandescent lamp

placed back.

  The mentioned operating reliability of the light-emitting diode device represents, on the basis of

  the aesthetic effect of unified fires using

  colorless, essential technical progress in case

  failure of individual LEDs, the

  positive overall does not really lose its ability to function as is the case when a failure of an individual incandescent lamp, so besides the signal function that we can 9 the fire according to the invention also makes an essential contribution to safety, 10.- 1 r. Motor vehicle lamp, in particular a signal lamp for a motor vehicle, comprising

  LEDs or light diode chips

  its as light sources, which are mounted on or in a base plate, characterized by the use of three-phase (10, 21, 31) white or transparent light-emitting diodes in the non-excited state, permitting to obtain at least two different light colors for different light and / or signal functions and which, depending on the desired signal color, can be controlled by subjecting them to different voltage actions (13,

14, 15; 26, 27, 28).

  2. Motor vehicle light according to the

  claim 1, characterized in that it can be used as a signal light as a stop or flashing light, or as an indicator of the operating state with different light colors for different states

  such as acceleration, rolling or braking.

  3 Few motor vehicles according to the

  claim 1, characterized in that different parts (21 to 25; 41 to 44) of an overall lighting board can be separately controlled to produce special fire colors and / or special light intensities of

colored light serving as a signal.

  4. Few motor vehicles according to the

  claim 1, characterized in that a number of light-emitting diode chips (31) are applied

  by forming a kind of matrix on a base plate

mune (30).

  5. Few motor vehicles according to the

  claim 4, characterized in that the chips of light diodes (31) are applied to a reflective surface coating (33) made on the plate

basic (30).

  6. Motor vehicle light according to the

  5, characterized in that the superficial coating

  reflective surface (33) is constituted by a metal coating, preferably an aluminum coating, obtained by metallization under vacuum or by crackling, carried out

on the base plate (30).

  7. Few motor vehicles according to one

  any of claims 4 to 6, characterized in that

  the light-diode chips (31) are accommodated in cavity-like recesses (32) of the base plate (30) and are co-coated with a layer of transparent synthetic material (35) 0

  8. Few motor vehicles according to the

  7, characterized in that the plastic layer (35) has a substantially planar surface, and a predetermined light diffusion is produced by means of a separate diffusing glass (37) above the

  layer of synthetic material (35).