Device of vehicle light signaling with permanent light sources

FIELD: transport.

SUBSTANCE: invention relates to vehicle lighting equipment mounted outside and composed of multicellular head or tail lights. Proposed light source comprises case, diffuser and optical system. The latter comprises, at least, one unified optical module and optional built-in cell with appropriate cat's eye. Unified optical module allows the functions of single or combined light and is built around one-piece high-power LED with reflecting secondary optics composed of aspheric lens. Outer light-emitting surface of aspheric lens is composed of a set of 2nd-order surfaces with linear sizes commensurable with linear sizes of optical module.

EFFECT: expanded operating performances.

8 cl, 2 dwg

 

The invention relates to a device alarm light vehicles placed on the outside and intended for installation in the front and/or rear multicell lights, providing functions dimensions (outline) lights, turn signals, brake light, rear fog lights and rear lights of motor vehicles and their trailers.

Known constructions of multiple external signal lamps of a vehicle, consisting of a solid plastic housing, lamp holders for incandescent lamps of different power and external diffuser, representing either welded construction from parts of different colors, or a single scatterer fixed using self taping connector screws in the tides of the housing. To ensure dust and moisture protection between the casing and the diffuser is provided a rubber or plastic seal [1, 2]. Mandatory element of the rear lights is a reflective device, which must be sealed.

The main disadvantage of such devices is the low reliability due to use as a radiation source incandescent lamps, operating in conditions of permanent shock, vibration and electrical loads.

Since the luminous efficiency of incandescent lamps not exceed Iset 10-15 LM/W, there is a need for the use of incandescent lamps with power 5-21 W, which determines how the requirement for efficient heat sink and external dimensions of the device [3, 4]. This limits the query designers and requires the use of heat resistant materials. Therefore, the evolution of multiple combined lights has evolved in the direction of decrease power consumption and increase reliability, and improve the design [5].

The known device, the light signal, which along with the traditional incandescent lamps are used in fiber-optic systems [6], including the use of solid-state light sources [7], or led cluster lamp base [8]. The most promising are non-replaceable light sources [9-12], in which the emitters are LEDs. The use of non-replaceable light sources with injection light-emitting diodes and the secondary optics made it possible not only to provide vibration and shock resistance of lighting equipment, but also to eliminate the need for service. However, increasing the light output of LEDs has provided not only a decrease in their number, and hence increase the reliability of products, but also caused problems of visual perception together ultra-bright point sources of light.

To ensure priemlemoj imaging signal lights and the uniformity of light distribution within the diffuser were developed complex katadioptrichesky system, in which each light source is supplied with an additional element of the secondary optics forming the preliminary light distribution of the collected external diffuser for obtaining the two-dimensional distribution, satisfy the photometric requirements of normative documents [13-17].

The progress of led technology has provided a luminous efficiency of LEDs to values from 100 to 140 LM/W, which allowed to obtain the luminous flux emitted from a single crystal, up to 100-200 LM. At the same time, according to a priori estimates, the minimum value of the integral of the light flux calculated from the zonal integration for signal lights, do not exceed 25 LM [18].

Because LEDs of this type usually have a wide angle light distribution with the values of the radiation angle of half intensity Θ1/2equal to 60-70 degrees, there is a need for effective use of the light flux within large angles of distribution and formation of the desired spatial distribution to ensure photometric specifications, safe level of radiation intensity [19] and aesthetic visual perception of signal lights.

Known construction, consisting of a body, a metal multilayer boards placed on it by the electronic circuit, the control powerful led the house, and external diffuser, allowing one of the functions marker light, brake light and turn signal [20]. The main disadvantage of this design is taken as a prototype, is a small optical conversion efficiency of the light flux emitted by the led, because the radiation in the range of small angles (0°-30°) is almost never used. In addition, the disadvantage of this device is its low functionality, requiring the simultaneous placement of a few of these lamps on the vehicle to ensure a minimum set of signal features, such as rear multicell lantern.

To minimize optical losses and increase the efficiency of such devices requires efficient secondary optics, which are used or metallized polymeric reflectors [21, 22], or a collimating nozzle, through which the light emitted within small angles of light distribution in the total internal reflection is directed parallel to the optical axis of the device [23-26]. However, the application of metallic reflectors not economically feasible, and complex geometry collimating lens does not provide the necessary efficiency because of multiple reflections from the front and rear surfaces.

Neirolepticakimi devices are consisting of non-replaceable light source on the basis of powerful LEDs and driver, placed on an aluminum Board, and secondary optics, combined in a single structure, called an optical element or an optical module with a certain unification of functionality with the possibility of installing in a variety of enclosure options products [20].

The basis of the invention is the task of developing the design of technological devices light alarm vehicle reliability, providing a high degree of protection against ingress of water and dust, not less IP67, low power, advanced optical design and comfortable visual perception.

The technical result is manifested in the unification of the design of the optical module with high efficiency and reliability, ensure the lighting characteristics of signal lights of different functionality, and low cost devices in General, because of the modular design allows to produce different types of devices with a few different combinations of lights.

This object is achieved in that each fire in the device, the light signal is single or combined, made n the basis of individual uniform optical module with non-replaceable light source based on the powerful led placed to ensure effective heat sink on a single printed circuit Board, placed in a sealed plastic case with a transparent outer lens, and the required light distribution to fire the appropriate category and its visualization are provided with uniform element nisobralsa secondary optics in the form of an aspherical lens, an external light emitting and reflective surfaces of which are formed by a set of surfaces of the second order, linear dimensions, comparable with the linear dimensions of the optical module.

The light alarm device of the vehicle, characterized in that on the inner light-emitting surface of the lens performed additional optical elements in the form of a set of surfaces of the second order to obtain the required spatial light distributions of certain categories of lights.

The light alarm device of the vehicle, characterized in that it has a built-section with reflective device netrepreneur form of class IA, accommodated in the housing under the common transparent diffuser.

The light alarm device of the vehicle, characterized in that it has a built-section with reflective fixture triangular IIIA, rasmusen is Y. in the case under the common transparent diffuser.

The light alarm device of the vehicle, characterized in that on the side of the body has built-in side marker light module with non-replaceable light source and the additional light-reflecting device.

The light alarm device of the vehicle, characterized in that the color characteristics of radiation of the LEDs on the modules are non-replaceable light sources correspond to the colorimetric specifications of the lights of respective categories.

The light alarm device of the vehicle, characterized in that a non-replaceable light source optical module consists of several LEDs, including various light distributions.

The light alarm device of the vehicle, characterized in that a non-replaceable light source contains multiple LEDs with different color characteristics to provide different colorimetric specifications of the optical module.

The light alarm device of the vehicle, characterized in that the diffuser module marker light combined with reflective device netrepreneur form of class IB.

The light alarm device of the vehicle, wherein the Parking and stop lights combined the single module, using a single fixed source with different modes of operation.

The light alarm device of the vehicle, characterized in that the printed circuit Board is fabricated on a substrate of thermally conductive aluminum foil.

The light alarm device of the vehicle, characterized in that the configuration of the accommodation modules non-replaceable light sources on the circuit Board is made in the shape of an oval (round) shape, or a polyhedron to ensure diversity of design.

The design of the proposed device, the light signal has a high degree of protection (IP67)that eliminates the negative influence of environmental factors and to provide not only high reliability and temporal stability of photometric characteristics result from the application of non-replaceable light sources, and low cost due to the use of a modular design that provides the ability to manufacture products with different design and functionality.

For a better understanding of the invention is illustrated by drawings, where

Figure 1 - General view of the device, the light signal of the vehicle with non-replaceable light sources;

Figure 2 - General view of the optical module with non-replaceable light source in the collection.

The device luminous signalizaci the vehicle (Figure 1) is a welded plastic construction consisting of a monolithic body 1 divided by transverse inserts 2 separate sections, which are placed in the optical modules (Figure 2) with non-replaceable light sources consisting of electronic control circuits with powerful LEDs 3 mounted on the common for all modules unified printed circuit Board 4, nisobralsa secondary optics in the form of an aspherical lens 5 and the total of the diffuser 6. The area of the printed circuit Board 4 provides simultaneous operation of all optical modules, however, because of individual signal lights have low values of the coefficients of daily use, the excess area of unused modules provides effective cooling of high-power LEDs 3 in extreme operating temperatures. Board 4 is attached to the inner side of the housing 1 using the self taping connector screws or system plastic latches (not shown conventionally). Opaque insert 2 is functionally divided light fluxes of the individual modules and are mounted in the slots of the housing 1. The external surface of the total diffuser 6 is smooth, and on its inner surface can be made more precise optical elements 9 in the form of a set of surfaces of the second order to achieve a specific light distributions of certain categories of lights. Aspherical lens 5 flat bottom p is a surface mounted on the surface of the Board 4 so, to shaped coaxial installation self-centering recess were linked with light-emitting surface of the led 3. For fixing aspherical lens 5 in the housing 1 of the device is made tides 7. Sealed plug connector 8 (Figure 2) connects the device with on-Board network of the vehicle and provides a degree of protection IP67. As required options in the design of the rear light signal provided by section reflecting device 10 netrepreneur form of class IA for hire or triangular 11 class IIIA for trailers.

At the option of the device, the light signal has a side marker light 12 categories SM1, combined with reflective device class IA.

Thus, the device, the light signal of the vehicle provides the functions of the single, multiple or combined lights and is characterized by the following structural features:

- the device is made in a single monolithic body 1 with a total light emitting surface of the lens 6, as a separate unified optical modules with non-replaceable light sources based on high power LEDs 3, placed on the unified printed circuit Board 4;

required light distribution and visualization of each of the th single or combined fire provides a unified element nisobralsa secondary optics in the form of an aspherical lens 5, the external light-emitting and reflective surfaces of which are formed by a set of surfaces of the second order, linear size (diameter) D, is comparable with the linear dimensions of the optical module L (2.);

- for the correction of the spatial light distribution of selected types of lights on the inner light-emitting surface of the lens 6 can be performed by additional optical elements 9 in the form of a set of surfaces of the second order;

in case 1 (Figure 1) under the common transparent diffuser 6 can be embedded section with reflective device netrepreneur form of class IA 10 or triangular IIIA 11;

- on the side surface of the housing 1 may be optional integrated side marker light with non-replaceable light source and the additional light-reflecting device 12;

- each module has a non-replaceable light source color emission characteristics of LEDs 3 are determined by the colorimetric specifications of the lights of the respective categories;

- non-replaceable light source optical module may consist of several LEDs 3, including various light distributions;

- to provide a variety of colorimetric specifications optical module non-replaceable light source contains multiple LEDs 3 different color characteristics to provide different colorimetric specifications of the optical module;

- diffuser module marker light 12 can be combined with reflective device class IB;

- tail and stop lights combined in one module according to the positions 3, 4, 5, using a single fixed source with different modes of operation;

- printed circuit Board can be manufactured mainly from foil fiberglass type FR-4, or on a backing of thermally conductive aluminum foil type SRSV - Metal Core Printed Circuit Board;

- to ensure the diversity of the design configuration of the housing 1 to accommodate modules non-replaceable light sources on the circuit Board 4 can be made in the shape of an oval (round) shape, or a polyhedron.

Fixture light alarm operates as follows.

When the supply voltage from the electrical system of the vehicle through a tight plug connector 8 to the electronic circuit of the control device and the control signal required fire turns on the led 3 non-replaceable light source corresponding to the optical module, which causes the emission of light in the direction of the spherical surface coaxial cavities on the bottom surface of the aspherical lens 5. Light passing through the aspherical lens 5 in the effects of total internal reflection and refraction of Kosovo is prostu surfaces of the second order, located on the light emitting and reflective surfaces of the lens, forms an integral two-dimensional spatial distribution in accordance with the photometric regulations TNLA to fire this category in the plane located normal to the axis of the optical module. The spatial distribution of the marker light, brake light and turn signal, according to the regulations TNLA, coincide, which allows to unify the secondary optics in the optical module, and the difference in the values of the axial forces of light to lights of different categories is provided by the choice of injection currents of the LEDs. The choice of the colorimetric characteristics of the LEDs is determined by the requirements of technical regulations. For lights other categories, such as rear fog having other spatial power distribution of light, use of corrective optics 9 on the inner light-emitting surface of the lens 6 or uses a special aspherical lens with a different configuration of the surfaces of the second order on the light emitting and reflective surfaces. The use of a common circuit Board 4 allows you to provide a heat mode on the LEDs 3 in the entire temperature range. The unification of the secondary optics significantly reduces the cost of the product and its tightness determines high Dolgova the activity.

The proposed design solution, compared with the prototype, simplifies the task of providing a device light alarm main functions rear (FWD) multi-section lantern, which determines its economic efficiency and competitiveness.

As shown by tests of the prototype device, the light signal of the proposed design provides the required photometric and colorimetric characteristics, has high reliability and energy efficiency.

The design of the proposed device, the light signal has a high degree of protection (IP67)that eliminates the negative influence of environmental factors and to provide not only high reliability and temporal stability of photometric characteristics result from the application of non-replaceable light sources, and low cost due to the use of a modular design that makes it possible to manufacture products with different design and functionality.

Industrial use proposed versions of the device, the light signal is expected in 2011

1. The light alarm device of a vehicle with non-replaceable light sources, including the housing, russei the motor and the optical system, wherein the optical system includes at least one uniform optical module that provides the functions of the single, combined or combined fire, with non-replaceable light source based on a single powerful led with nisobralsa secondary optics, made in the shape of an aspherical lens, an external light-emitting surface which is formed by a set of surfaces of the second order, linear dimensions, comparable with the linear dimensions of the optical module, and optional built-section with retroreflective element of the corresponding class.

2. The device according to claim 1, characterized in that on the inner surface of the lens performed additional optical elements in the form of a set of surfaces of the second order to obtain the required spatial light distributions of certain categories of lights.

3. The device according to claim 1, characterized in that on the side of the body has built-in side marker light module with non-replaceable light source and the additional light-reflecting device.

4. Device according to claims 1 and 3, characterized in that the color characteristics of radiation of the LEDs on the modules are non-replaceable light sources correspond to the colorimetric specifications of the lights of respective categories.

5. The device according to claim 1, characterized in that the functions of the single or combined fire combined with retroreflective device netrepreneur form of class IB.

6. The device according to claim 1, characterized in that the functions of the single or combined fire in a single optical module implemented using a single fixed source with different modes of operation.

7. Device according to claims 1 or 3, characterized in that the configuration of the accommodation modules non-replaceable light sources on the circuit Board is made in the shape of an oval or polygon to ensure diversity of design.

8. The device according to claim 7, characterized in that the printed circuit Board is fabricated on a substrate of thermally conductive aluminum foil.



 

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